Pressure-balanced steam generator

文档序号：131321 发布日期：2021-10-22 浏览：37次中文

阅读说明：本技术 一种压力均衡的蒸汽发生器 (Pressure-balanced steam generator ) 是由钟兵陈鑫陈璐瑶许春晓吴芷红高永强于 2021-07-07 设计创作，主要内容包括：本发明提供了一种压力均衡的蒸汽发生器,左管箱、中管箱和右管箱内分别设置第一电加热器、第二电加热器和第三电加热器；所述左管箱和右管箱之间设置连通左管箱和右管箱的匀和管,所述匀和管设置在左管箱和右管箱的中部以上的位置,所述匀和管上设置阀门,所述左管箱和右管箱分别设置压力传感器,所述压力传感器、阀门与控制器数据连接,所述控制器根据左管箱和右管箱的压力差来控制压力阀门的开闭。本发明提供了一种新的热管结构的蒸汽发生器,自动调控左管箱和右管箱的压力平衡,从而保证左右两侧换热均匀,实现了系统的均衡控制。(The invention provides a pressure-balanced steam generator, wherein a first electric heater, a second electric heater and a third electric heater are respectively arranged in a left tube box, a middle tube box and a right tube box; the left channel box and the right channel box are communicated through a leveling pipe, the leveling pipe is arranged at a position above the middle of the left channel box and the middle of the right channel box, valves are arranged on the leveling pipe, the left channel box and the right channel box are respectively provided with a pressure sensor, the pressure sensors and the valves are in data connection with a controller, and the controller controls the pressure valves to be opened and closed according to the pressure difference between the left channel box and the right channel box. The invention provides a steam generator with a novel heat pipe structure, which automatically regulates and controls the pressure balance of a left pipe box and a right pipe box, thereby ensuring that the heat exchange at the left side and the right side is uniform and realizing the balance control of a system.)

1. A steam generator comprises a box body, an inner pipe body, a cold water inlet and a steam outlet, wherein the cold water inlet is formed in the side wall of the box body, an exhaust port is formed in the upper portion of the box body, the inner pipe body is arranged in the box body, the inner pipe body comprises an outer pipe and an electric heater arranged in the outer pipe, a water inlet channel is formed in the lower portion of the inner pipe body, water in the box body can enter the inner pipe body to be heated, and the upper portion of the inner pipe body is connected with the steam outlet; the electric heater heats water entering the outer pipe to generate steam; the steam generator comprises an electric heating device and a steam drum, the electric heating device is arranged in the steam drum, the steam drum comprises a water inlet pipe and a steam outlet, the electric heating device comprises a first pipe box, a second pipe box and a coil pipe, the coil pipe is communicated with the first pipe box and the second pipe box to form closed circulation of heating fluid, and the electric heater is arranged in the first pipe box; the number of the coil pipes is one or more, each coil pipe comprises a plurality of arc-shaped pipe bundles, the central lines of the arc-shaped pipe bundles are arcs taking the first pipe box as a concentric circle, and the end parts of the adjacent pipe bundles are communicated, so that the end parts of the pipe bundles form free ends of the pipe bundles; a first electric heater and a second electric heater are respectively arranged in the first channel box and the second channel box; the box body is internally provided with a pressure sensor for measuring the pressure of steam in the box body; the pressure sensor and the electric heater are in data connection with the controller, and the controller controls the heating power of the electric heater according to the working mode selected by the control client.

2. A pressure-balanced steam generator comprises an electric heating device and a steam drum, wherein the electric heating device is arranged in the steam drum, the steam drum comprises a water inlet pipe and a steam outlet, the electric heating device comprises a left pipe box, a middle pipe box, a right pipe box and a coil pipe, the coil pipe comprises a left coil pipe and a right coil pipe, the left coil pipe is communicated with the left pipe box and the middle pipe box, the right coil pipe is communicated with the right pipe box and the middle pipe box, fluid is in closed circulation in the left pipe box, the middle pipe box, the right pipe box and the coil pipe, an electric heater is arranged in the electric heating device and used for heating the fluid in the electric heating device, and then the water in the steam drum is heated through the heated fluid;

the middle pipe box comprises a first interface and a second interface, the first interface is connected with the interface of the left coil pipe, the second interface is connected with the interface of the right coil pipe, the other interface of the left coil pipe is connected with the left pipe box, and the other interface of the right coil pipe is connected with the right pipe box; the first interface and the second interface are arranged on two opposite sides of the middle pipe box; the position of the right coil pipe is the position of the left coil pipe which rotates 180 degrees along the axis of the middle pipe box;

a first electric heater, a second electric heater and a third electric heater are respectively arranged in the left channel box, the middle channel box and the right channel box;

the left channel box and the right channel box are communicated through a leveling pipe, the leveling pipe is arranged at a position above the middle of the left channel box and the middle of the right channel box, valves are arranged on the leveling pipe, the left channel box and the right channel box are respectively provided with a pressure sensor, the pressure sensors and the valves are in data connection with a controller, and the controller controls the pressure valves to be opened and closed according to the pressure difference between the left channel box and the right channel box.

3. The steam generator of claim 2, wherein the controller controls the valve to be opened when the detected pressure difference between the left and right headers exceeds a certain value; and when the detected pressure difference between the left channel box and the right channel box is lower than a certain value, the controller controls the valve to be closed.

4. The steam generator of claim 2, wherein the number of the coil pipes is one or more, each coil pipe comprises a plurality of circular-arc-shaped pipe bundles, the center lines of the circular-arc-shaped pipe bundles are circular arcs with the left pipe box and the left pipe box being concentric circles respectively, the end parts of the adjacent pipe bundles are communicated, and the fluid forms serial flow among the left pipe box, the middle pipe box and the right pipe box, so that the end parts of the pipe bundles form the free ends of the pipe bundles; the first electric heater, the second electric heater and the third electric heater are in data connection with a controller, and the controller controls the first electric heater, the second electric heater and the third electric heater to heat.

5. The steam generator as claimed in claim 2, wherein the housing is filled with a medicine, the medicine is soaked in water, and when in use, the water is heated in the housing by the heat pipe, and the medicine is heated by the water, so that a liquid medicine is generated in the housing, and the evaporator is a liquid medicine fumigating evaporator, and is preferably used for fumigating anus.

Technical Field

The invention relates to a steam generating device, in particular to an intermittent vibration descaling steam generator.

Background

Steam generators are mechanical devices that use the heat energy of a fuel or other energy source to heat water into steam. The steam generator has wide application field and is widely applied to places such as clothing factories, dry cleaning shops, restaurants, bunkers, canteens, restaurants, factories and mines, bean product factories and the like. In applicant's prior application, a new coil type electric heating coil, such as CN106123306A, was developed and studied to vibrate the elastic tube bundle due to the expansion of the fluid therein caused by heating, thereby achieving heating and descaling effects.

However, in applications where it is found that continuous heating of the electric heater results in fluid stability of the internal electric heating means, i.e. the fluid is not flowing or is flowing very little, or the flow is stable, the coil vibration performance is greatly reduced, thereby affecting the efficiency of the coil descaling and heating.

Previous applications of the university of Qingdao technology, (e.g., application No. 2019101874848), used intermittent heating to vibrate the coil, but intermittent heating resulted in failure to heat for a period of time, resulting in a decrease in heating power. Therefore, the invention is improved, adopts a more reasonable heating mode and improves the heating efficiency.

In addition, in the prior application, only one group of coil pipes is adopted, so that the heat exchange area is small, and the heat exchange effect is poor.

In the prior application, a three-heater steam generator has been developed, but the steam generator is controlled according to a period, so that the vibration heating effect is poor and the degree of intelligence is low. The present application therefore provides further improvements over the previous studies.

However, because the left tube box and the right tube box are independent structures, the pressure or the liquid level on the left side and the right side is unbalanced, so that the heat exchange on the left side and the right side is uneven, the local temperature is higher, even the pressure is higher, and fatigue damage of a heat exchange element is caused.

Disclosure of Invention

The invention provides an electric heating steam generator of a novel heating device aiming at the defects of the steam generator in the prior art. This steam generator can make pressure equilibrium, temperature, liquid level balanced, realizes the vibration of the periodic frequency of heat exchange tube, has improved heating efficiency to realize fine scale removal and heating effect.

In order to achieve the purpose, the invention adopts the following technical scheme:

a steam generator comprises an electric heating device and a steam drum, wherein the electric heating device is arranged in the steam drum, the steam drum comprises a water inlet pipe and a steam outlet, the electric heating device comprises a left pipe box, a middle pipe box, a right pipe box and a coil pipe, the coil pipe comprises a left coil pipe and a right coil pipe, the left coil pipe is communicated with the left pipe box and the middle pipe box, the right coil pipe is communicated with the right pipe box and the middle pipe box, fluid is in closed circulation in the left pipe box, the middle pipe box, the right pipe box and the coil pipe, an electric heater is arranged in the electric heating device and used for heating the fluid in the electric heating device, and then water in the steam drum is heated through the heated fluid;

a first electric heater, a second electric heater and a third electric heater are respectively arranged in the left channel box, the middle channel box and the right channel box;

Preferably, when the detected pressure difference between the left channel box and the right channel box exceeds a certain value, the controller controls the valve to open; and when the detected pressure difference between the left channel box and the right channel box is lower than a certain value, the controller controls the valve to be closed.

Preferably, the number of the coil pipes is one or more, each coil pipe comprises a plurality of circular arc-shaped pipe bundles, the central lines of the circular arc-shaped pipe bundles are circular arcs with a left pipe box and a left pipe box as concentric circles respectively, the end parts of the adjacent pipe bundles are communicated, and fluid forms serial flow among the left pipe box, the middle pipe box and the right pipe box, so that the end parts of the pipe bundles form the free ends of the pipe bundles; the first electric heater, the second electric heater and the third electric heater are in data connection with a controller, and the controller controls the first electric heater, the second electric heater and the third electric heater to heat.

Preferably, the box body is internally provided with a medicine, the medicine is soaked in water, when the medicine fumigating and washing device is used, the water is heated in the box body through the heat pipe, the medicine is heated through the water, and therefore liquid medicine is generated in the box body, the evaporator is a liquid medicine fumigating and washing evaporator, and the liquid medicine is preferably used for fumigating and washing anus.

Preferably, the left, middle and right headers are provided along a height direction.

Preferably, a left return pipe is arranged between the left pipe box and the middle pipe box, and a right return pipe is arranged between the right pipe box and the middle pipe box.

Preferably, the box body is internally provided with medicines, the medicines are soaked in water, when the drug fumigating and washing device is used, the water is heated in the box body through the heat pipe, the medicines are heated through the water, and therefore liquid medicine is generated in the box body, and the evaporator is a liquid medicine fumigating and washing evaporator.

The invention has the following advantages:

1. the invention provides a steam generator with a novel heat pipe structure, which automatically regulates and controls the pressure balance of a left pipe box and a right pipe box through pressure sensors arranged on the left pipe box and the right pipe box and a valve arranged between the left pipe box and the right pipe box, thereby ensuring that the heat exchange on the left side and the right side is uniform and realizing the balanced control of a system.

2. Through the pressure difference of the front time period and the rear time period or the accumulated pressure difference detected by the pressure sensing element, the evaporation of the fluid inside can be judged to be basically saturated through the pressure difference, the volume of the fluid inside is basically not changed greatly, and under the condition, the fluid inside is relatively stable, the vibration of the tube bundle at the moment is poor, so that the adjustment is needed, the vibration is carried out, and the heating is stopped. So that the fluid undergoes volume reduction to thereby realize vibration. When the pressure difference is reduced to a certain degree, the internal fluid starts to enter a stable state again, and the fluid needs to be heated to evaporate and expand again, so that the electric heater needs to be started for heating. The steady state of the fluid is judged by the accumulation of the pressure difference or the pressure difference change, so that the result is more accurate, and the problem of error increase caused by aging due to the problem of operation time is solved.

3. The steam generator provided by the invention has the advantages that the 3 electric heaters are used for alternately heating, and the periodic frequent vibration of the elastic coil can be realized, so that the good descaling and heating effects are realized, and the heating power is basically the same in time.

4. The invention designs a layout of an electric heating device with a novel structure in a steam drum, which can further improve the heating efficiency.

5. The invention increases the heating power of the coil pipe periodically and continuously and reduces the heating power, so that the heated fluid can generate the volume which is continuously in a changing state after being heated, and the free end of the coil pipe is induced to generate vibration, thereby strengthening heat transfer.

6. The invention optimizes the optimal relationship of the parameters of the coil pipe through a large amount of experiments and numerical simulation, thereby realizing the optimal heating efficiency.

Description of the drawings:

fig. 1 is a top view of an electric heating apparatus of the present invention.

Fig. 2 is a front view of the electric heating apparatus.

Fig. 3 is a schematic layout of an electric heating device arranged in a circular steam drum.

Fig. 4 is a schematic diagram of the coil arrangement.

Fig. 5 is a schematic view of a steam drum structure.

Fig. 6 is a front view of another embodiment of the electric heating apparatus of the present invention.

Fig. 7 is a schematic diagram of the dimensional structure of the electric heating device of the present invention.

FIG. 8 is a schematic view of another arrangement of the electric heating apparatus of the present invention in a circular cross-section heater;

fig. 9 is a structural schematic diagram of a modified scheme of the invention for arranging the homogenizing pipe.

In the figure: 1. the heating device comprises a coil pipe, a left coil pipe 101, a right coil pipe 102, a left pipe box 2, a left pipe box 3, a free end 4, a free end 3 ', a free end 4', a free end 5, a water inlet pipe 6, a steam outlet 7, a free end 8, a middle pipe box 9, a connecting point 10, an electric heating device 11, a steam pocket 12, a pipe bundle 131, an electric heater 133, a right pipe box 14, a first interface 15, a second interface 16, a return pipe 17, 18, a homogenizing pipe 19 and a valve 20.

Detailed Description

A steam generator, as shown in fig. 5, comprises an electric heating device 10, a steam drum 11, said electric heating device 10 being arranged in the steam drum 11, said steam drum 11 comprising a water inlet pipe 5 and a steam outlet 6. The steam outlet 6 is arranged at the upper part of the steam drum.

Preferably, the steam drum is of cylindrical construction.

Fig. 1 shows a top view of an electric heating apparatus 10, as shown in fig. 1, the electric heating apparatus 10 includes a left tube box 2, a middle tube box 8, a right tube box 14 and a tube coil 1, the tube coil 1 includes a left tube coil 101 and a right tube coil 102, the left tube coil 101 is communicated with the left tube box 2 and the middle tube box 8, the right tube coil 102 is communicated with the right tube box 14 and the middle tube box 8, a fluid circulates in the left tube box 2, the middle tube box 8, the right tube box 14 and the tube coil 1 in a closed manner, electric heaters 131, 132, 133 are disposed in the electric heating apparatus 10, and the electric heaters 131 and 133 are used for heating the fluid in the electric heating apparatus 10 and then heating the water in the steam drum by the heated fluid.

The middle pipe box 8 comprises a first interface 15 and a second interface 16, the first interface 15 is connected with the interface of the left coil pipe, the second interface 16 is connected with the interface of the right coil pipe, the other interface of the left coil pipe is connected with the left pipe box 2, and the other interface of the right coil pipe is connected with the right pipe box 14; the first interface 15 and the second interface 16 are arranged on two opposite sides of the middle pipe box 8; the position of the right coil pipe is the position of the left coil pipe which rotates 180 degrees along the axis of the middle pipe box;

as shown in fig. 1-2, a first electric heater 131, a second electric heater 132, and a third electric heater 133 are respectively provided in the left tube box 2, the middle tube box 8, and the right tube box 14; the left tube box 2 and/or the middle tube box 8 and/or the right tube box 14 are filled with the phase fluid; the number of the coil pipes 1 is one or more, each coil pipe 1 comprises a plurality of arc-shaped pipe bundles 12, the central lines of the arc-shaped pipe bundles 12 are arcs which are concentric with a left pipe box 2 and a left pipe box 14 respectively, the end parts of the adjacent pipe bundles 12 are communicated, and fluid forms serial flow among the left pipe box 2, a middle pipe box 8 and a right pipe box 14, so that the end parts of the pipe bundles form free ends 3, 4, 3 'and 4' of the pipe bundles; the fluid is phase-change fluid, vapor-liquid phase-change fluid, the first electric heater 131, the second electric heater 132 and the third electric heater 133 are in data connection with a controller, and the controller controls the first electric heater 131, the second electric heater 132 and the third electric heater 133 to heat.

Preferably, the left header 2, the middle header 8, and the right header 14 are disposed along the height direction.

Preferably, a left return pipe 17 is provided between the left pipe box 2 and the middle pipe box 8, and a right return pipe 18 is provided between the right pipe box 14 and the middle pipe box 8. Preferably, the return pipe is arranged at the bottom.

The fluid heats the evaporation at well pipe box 8, flows to two coil pipes 101, 102 about along arc tube bank, and the fluid can produce the volume expansion after being heated to form steam, and the volume of steam is greater than water far away, and the steam of consequently forming can carry out the flow of quick impact formula in the coil pipe. Because volume expansion and steam flow can induce the arc tube free end to vibrate, the vibration is transferred to the surrounding heat exchange fluid at the free end of the heat exchange tube in the vibrating process, and the fluid can also generate disturbance each other, so that the surrounding heat exchange fluid forms disturbance flow, a boundary layer is damaged, and the purpose of enhancing heat transfer is realized. The fluid is condensed and released in the left and right channel boxes and then flows back to the middle channel box through the return pipe. Conversely, the fluid may be heated in the left and right header tanks, condensed in the middle header tank, and returned to the left and right header tanks through the return pipe for circulation.

According to the invention, the prior art is improved, and the pipe box and the coil pipes are respectively arranged into two pipes which are distributed on the left side and the right side, so that the coil pipes distributed on the left side and the right side can perform vibration heat exchange descaling, the heat exchange vibration area is enlarged, the vibration can be more uniform, the heat exchange effect is more uniform, the heat exchange area is increased, and the heat exchange and descaling effects are enhanced.

Preferably, a leveling pipe 19 communicating the left and right headers is provided between the left and right headers. The pressure, the temperature and the water level of the left channel box and the right channel box are balanced by arranging the even-mixing pipe.

Preferably, as shown in fig. 9, the leveling pipe 19 is preferably disposed at a position above the middle of the left and right channel boxes 2 and 14, the leveling pipe 19 is provided with a valve 20, the left and right channel boxes 2 and 14 are respectively provided with a pressure sensor, the pressure sensor and the valve 20 are in data connection with a controller, and the controller controls the opening and closing of the pressure valve according to the pressure difference between the left and right channel boxes 2 and 14.

Preferably, when the detected pressure difference between the left and right channel boxes 2 and 14 exceeds a certain value, the controller controls the valve to open; and when the detected pressure difference between the left channel box and the right channel box is lower than a certain value, the controller controls the valve to be closed.

The invention provides a steam generator with a novel heat pipe structure, which automatically regulates and controls the pressure balance of a left pipe box and a right pipe box through pressure sensors arranged on the left pipe box and the right pipe box and a valve between the left pipe box and the right pipe box, thereby ensuring the uniform heat exchange of the left side and the right side and realizing the balanced control of a system.

Preferably, as shown in fig. 9, the leveling pipe 19 is preferably disposed at a position above the middle of the left and right channel boxes 2 and 14, the leveling pipe 19 is provided with a valve 20, the left and right channel boxes 2 and 14 are respectively provided with a temperature sensor, the temperature sensor and the valve 20 are in data connection with a controller, and the controller controls the opening and closing of the pressure valve according to the temperature difference between the left and right channel boxes 2 and 14.

Preferably, when the detected temperature difference between the left channel box 2 and the right channel box 14 exceeds a certain value, the controller controls the valve to open; and when the detected temperature difference between the left channel box and the right channel box is lower than a certain value, the controller controls the valve to be closed.

The invention provides a heater with a novel heat pipe structure, which automatically regulates and controls the heat balance of a left pipe box and a right pipe box through temperature sensors arranged on the left pipe box and the right pipe box and a valve arranged between the left pipe box and the right pipe box, thereby ensuring uniform heat exchange on the left side and the right side and realizing the balanced control of a system.

Preferably, as shown in fig. 9, the leveling pipe 19 is disposed at a lower position of the left and right header boxes 2 and 14, the leveling pipe 19 is provided with a valve 20, the left and right header boxes 2 and 14 are respectively provided with a liquid level sensor, the liquid level sensor and the valve 20 are in data connection with a controller, and the controller controls the opening and closing of the pressure valve according to the liquid level difference between the left and right header boxes 2 and 14.

Preferably, when the detected liquid level difference between the left channel box 2 and the right channel box 14 exceeds a certain value, the controller controls the valve to be opened; and when the detected liquid level difference between the left channel box and the right channel box is lower than a certain value, the controller controls the valve to be closed.

The invention provides a heater with a novel heat pipe structure, which automatically regulates and controls the liquid level balance of a left pipe box and a right pipe box through liquid level sensors arranged on the left pipe box and the right pipe box and a valve arranged between the left pipe box and the right pipe box, avoids overhigh or overlow liquid level, ensures uniform heat exchange on the left side and the right side, and realizes the balanced control of a system.

Along the vertical direction, a plurality of averaging tubes are arranged, and along the vertical height direction, the spacing between the equalizing tubes becomes smaller and smaller. The space is arranged to ensure that the place with large upper pressure and the place with small lower pressure can meet the pressure equalization at the same time as soon as possible.

As an option, the box body is internally provided with medicines, the medicines are soaked in water, when the medicine box is used, water is heated in the box body through the heat pipe, the medicines are heated through the water, and therefore liquid medicine is generated in the box body. The evaporator is a liquid medicine fumigation-washing evaporator.

As another option, the steam generator further comprises a liquid medicine evaporation tank, the liquid medicine evaporation tank is communicated with the tank body through a pipeline, an atomizer is arranged in the liquid medicine evaporation tank, and the steam outlet 6 is arranged at the upper part of the liquid medicine evaporation tank.

Preferably, the medicinal liquid is used for fumigating anus.

The generated liquid medicine enters the liquid medicine evaporation tank through a pipeline, is atomized in the liquid medicine evaporation tank and is discharged through the steam outlet. The vapor outlet may be discharged directly against the patient's diseased site for treatment.

As an option, the steam is used for garment ironing. For example for ironing of garments in garment design.

Preferably, the arc-shaped pipes of the left coil pipe are distributed by taking the axis of the left pipe box as the center of a circle, and the arc-shaped pipes of the right coil pipe are distributed by taking the axis of the right pipe box as the center of a circle. The left tube box and the right tube box are arranged as circle centers, so that the distribution of the arc-shaped tubes can be better ensured, and the vibration and the heating are uniform.

Preferably, the coil is provided in plurality.

Preferably, the position of the right coil (including the right tube box) is a position of the left coil (including the left tube box) rotated by 180 degrees (angle) along the axis of the middle tube box. Through such setting, can make the arc pipe distribution of heat transfer reasonable more even, improve the heat transfer effect.

Preferably, the left coil pipe 101 and the right coil pipe 102 are staggered in the height direction, as shown in fig. 6. Through the staggered distribution, can make to vibrate heat transfer and scale removal on the not co-altitude for the vibration is more even, strengthens heat transfer and scale removal effect.

Preferably, the coil pipes 1 are provided in plural (for example, on the same side (left side or right side)) in the height direction of the middle tube box 8, and the pipe diameters of the coil pipes 1 (for example, on the same side (left side or right side)) are gradually reduced from the top to the bottom.

Preferably, the pipe diameter of the arc pipe of the coil pipe (for example, the same side (left side or right side)) is gradually decreased and gradually increased along the top-down direction of the middle pipe box 8.

The pipe diameter range through the coil pipe increases, can guarantee that more steam circulates about through upper portion between box and the middle pipe case, guarantees that the distribution of steam is even in all coil pipes, further reinforces the heat transfer effect for the whole vibration effect is even, and the heat transfer effect increases, further improves heat transfer effect and scale removal effect. Experiments show that better heat exchange effect and descaling effect can be achieved by adopting the structural design.

Preferably, the coil pipes on the same side (left side or right side) are arranged in plurality along the height direction of the middle tube box 8, and the distance between the adjacent coil pipes on the same side (left side or right side) is increased from the top to the bottom.

Preferably, the spacing between the coils on the same side (left or right) increases progressively with increasing magnitude along the height of the first header.

The interval range through the coil pipe increases, can guarantee that more steam passes through upper portion and gets into about the circulation between box and the middle tube case, guarantees that the distribution of steam is even in all coil pipes, further reinforces the heat transfer effect for the whole vibration effect is even, and the heat transfer effect increases, further improves heat transfer effect and scale removal effect. Experiments show that better heat exchange effect and descaling effect can be achieved by adopting the structural design.

In tests, it is found that the pipe diameters and distances of the left pipe box 2, the right pipe box 14 and the middle pipe box 8 and the pipe diameters of the arc pipes can influence the heat exchange efficiency and uniformity. If the distance between the collector is too big, then heat exchange efficiency is too poor, and the distance between the arc pipe is too little, then the arc pipe distributes too closely, also can influence heat exchange efficiency, and the pipe diameter size of collector and heat exchange tube influences the volume of the liquid or the steam that hold, then can exert an influence to the vibration of free end to influence the heat transfer. Therefore, the pipe diameters and distances of the left pipe box 2, the right pipe box 14 and the middle pipe box 8 and the pipe diameters of the arc pipes have a certain relationship.

The invention provides an optimal size relation summarized by numerical simulation and test data of a plurality of heat pipes with different sizes. Starting from the maximum heat exchange amount in the heat exchange effect, nearly 200 forms are calculated. The dimensional relationship is as follows:

the distance between the center of the middle tube box 8 and the center of the left tube box 2 is equal to the distance between the center of the middle tube box 8 and the center of the right tube box 14, and is L, the tube diameter of the left tube box 2, the tube diameter of the middle tube box 8, and the radius of the right tube box 14 are R, the radius of the axis of the innermost arc tube among the arc tubes is R1, and the radius of the axis of the outermost arc tube is R2, so that the following requirements are met:

R1/R2＝a*(R/L)²-b (R/L) + c; wherein a, b, c are parameters, wherein 4.834<a<4.835，1.390<b<1.391， 0.5585<c<0.5590, respectively; preferably, a is 4.8344, b is 1.3906, and c is 0.5587.

Preferably, 34< R <61 mm; 114< L <191 mm; 69< R1<121mm, 119< R2<201 mm.

Preferably, the number of arced tubes of the coil is 3 to 5, preferably 3 or 4.

Preferably, 0.57< R1/R2< 0.61; 0.3< R/L < 0.32.

Preferably, 0.583< R1/R2< 0.60; 0.304< R/L < 0.316.

Preferably, the radius of the arc tube is preferably 10-40 mm; preferably 15 to 35mm, more preferably 20 to 30 mm.

Preferably, the centers of the left, right, and middle headers 2, 14, and 8 are aligned.

Preferably, the arc between the ends of the free ends 3, 4, centered on the central axis of the left header, is 95-130 degrees, preferably 120 degrees. In the same way, the radians of the free ends 3 ', 4' and the free ends 3, 4 are the same. Through the design of the preferable included angle, the vibration of the free end is optimized, and therefore the heating efficiency is optimized.

Preferably, the box body has a circular cross section, and is provided with a plurality of electric heating devices, wherein one electric heating device is arranged at the center of the circular cross section and the other electric heating devices are distributed around the center of the circular cross section.

Preferably, the tube bundle of the coil 1 is an elastic tube bundle.

The heat exchange coefficient can be further improved by arranging the tube bundle of the coil 1 with an elastic tube bundle.

Further preferably, the electric heater is an electric heating rod.

The coil pipes 1 are multiple, and the coil pipes 1 are in a parallel structure.

It has been found in research and practice that continuous power-stable heating of the electric heater results in a stable fluid formation of the internal electric heating means, i.e. the fluid is not flowing or has little fluidity, or the flow is stable, resulting in a large reduction of the vibration performance of the coil 1, thus affecting the descaling of the coil 1 and the efficiency of heating. There is therefore a need for an improvement to the electrical heating coil described above as follows.

In the prior application of the inventor, a periodic heating mode is provided, and the vibration of the coil is continuously promoted through the periodic heating mode, so that the heat exchange efficiency and the descaling effect are improved. However, adjusting the vibration of the tube bundle with a fixed periodic variation can lead to hysteresis and too long or too short a period. Therefore, the invention improves the previous application and intelligently controls the vibration, so that the fluid in the fluid can realize frequent vibration, and good descaling and heat exchange effects are realized.

The present invention addresses the deficiencies in the art of the prior art by providing a new and intelligent vibration controlled steam generator. This steam generator can improve heat exchange efficiency to realize fine scale removal and heat transfer effect.

Self-regulation vibration based on pressure

Preferably, the left, middle and right headers 2, 8 and 14 are respectively provided with a first pressure sensor, a second pressure sensor and a third pressure sensor for detecting the pressures in the left, middle and right headers, the first, second and third pressure sensors are in data connection with the controller, the controller extracts the pressure data of the left, right and middle headers according to time sequence, the pressure data of adjacent time periods are compared to obtain the pressure difference or the accumulation of the pressure difference change, and when the pressure data is lower than a threshold value, the controller controls whether the first, third electric heaters 131 and 133 and the second electric heater 132 are heated.

Through the pressure difference of the previous and subsequent time periods or the accumulated pressure difference detected by the pressure sensing element, the evaporation of the fluid inside can be judged to be basically saturated through the pressure difference, and the volume of the fluid inside is basically not changed much. The fluid is made to undergo volume reduction to thereby realize vibration. When the pressure difference is reduced to a certain degree, the internal fluid starts to enter a stable state again, and at the moment, the fluid needs to be heated so as to be evaporated and expanded again, so that the electric heater needs to be started for heating.

The steady state of the fluid is judged according to the pressure difference or the accumulation of the pressure difference change, so that the result is more accurate, and the problem of error increase caused by aging due to the operation time problem is solved.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, if the average pressure of the left or right or left and right channel boxes in the previous period is P1 and the average pressure of the left or right or left and right channel boxes in the next period is P2, the controller controls the first and third electric heaters to stop heating and the second electric heater to heat if the difference between P2 and P1 is lower than the threshold value.

Preferably, when the second electric heater performs heating and the first and third electric heaters do not perform heating, if the average pressure of the middle tube box in the previous period is P1 and the average pressure of the middle tube box in the adjacent subsequent period is P2, the controller controls the first and third electric heaters to perform heating and the second electric heater to stop heating if the difference between P2 and P1 is lower than the threshold value.

The operation state of the electric heater is determined according to different conditions through the difference of the heating pressure of different heaters.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, if the average pressure of the left or right or left and right tube boxes in the previous period is P1 and the average pressure of the left or right or left and right tube boxes in the next period is P2, if P1 is P2, the heating is determined according to the following conditions:

if the P1 is larger than the pressure of the first data, the controller controls the first electric heater and the third electric heater to stop heating, and the second electric heater carries out heating; wherein the first data is greater than the pressure of the phase change fluid after the phase change; preferably the first data is a pressure at which the phase change fluid is substantially phase-changed;

if P1 is less than or equal to the pressure of the second data, the controller controls the first and third electric heaters to continue heating, and the second electric heater continues to stop heating, wherein the second data is less than or equal to the pressure at which the phase-change fluid does not change phase.

The first data is pressure data of a sufficiently heated state, and the second data is pressure data of no heating or pressure data of the beginning of heating. The judgment of the pressure is also used for determining whether the current electric heater is in a heating state or a non-heating state, so that the operation state of the electric heater is determined according to different conditions.

Preferably, when the second electric heater performs heating and the first third electric heater does not perform heating, if the pressure of the middle tube box of the previous period is P1 and the pressure of the middle tube box of the adjacent subsequent period is P2, if P1 is P2, heating is judged according to the following conditions:

if the P1 is larger than the pressure of the first data, the controller controls the second electric heater to stop heating, and the first electric heater and the third electric heater to heat; wherein the first data is greater than the pressure of the phase change fluid after the phase change; preferably the first data is a pressure at which the phase change fluid is substantially phase-changed;

if the pressure P1 is less than or equal to the pressure of the second data, the controller controls the second electric heater to continue heating, and the first and third electric heaters continue to stop heating, wherein the pressure of the second data is less than or equal to the pressure at which the phase-change fluid does not change phase.

Preferably, each channel is provided with n pressure sensing elements, and the pressure P in the current time period is calculated sequentially_iPressure Q of the preceding period_i-1Difference D of_i＝P_i-Q_i-1And for n pressure differences D_iPerforming arithmetic cumulative summationWhen the value of Y is lower than a set threshold value, the controller controls the first electric heater, the second electric heater and the third electric heater to stop heating or continue heating.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, the controller controls the first and third electric heaters to stop heating and the controller controls the second electric heater to heat when the temperature is lower than a threshold value.

Preferably, when the first and third electric heaters stop heating and the second electric heater heats, the controller controls the first and third electric heaters to heat and the controller controls the second electric heater to stop heating when the temperature is lower than a threshold value.

The operation state of the electric heater is determined according to different conditions through the difference of the heating pressure of different heaters.

Preferably, if Y is 0, heating is judged according to the following:

when the first electric heater and the third electric heater heat and the second electric heater does not heat, or when the first electric heater and the third electric heater stop heating and the second electric heater heats:

if P is_iWhen the arithmetic mean of the first data is larger than the pressure of the first data and is lower than the threshold value, the controller controls the heated electric heater to stop heating, and the unheated electric heater carries out heating; wherein the first data is greater than the pressure of the phase change fluid after the phase change; preferably the pressure at which the phase change fluid substantially changes phase;

if P is_iIs less than the pressure of the second data, the controller controls the heated electric heater to continue heating below the threshold value, wherein the second data is less than or equal to the pressure at which the phase change of the phase-change fluid does not occur.

Preferably, the period of time for measuring the pressure is 1 to 10 minutes, preferably 3 to 6 minutes, and further preferably 4 minutes.

Preferably, the threshold is 100-1000 pa, preferably 500 pa.

Preferably, the pressure value may be an average pressure value over a period of the time period. The pressure at a certain moment in time may also be used. For example, preferably both are pressures at the end of the time period.

Independently adjusting vibration based on temperature

Preferably, the left, middle and right headers 2, 8 and 14 are provided therein with a first temperature sensor, a second temperature sensor and a third temperature sensor for detecting the temperatures inside the left, middle and right headers, respectively, the first, second and third temperature sensors are in data connection with a controller, the controller extracts the temperature data of the left, right and middle headers in time sequence, obtains the temperature difference or the accumulation of the temperature difference change by comparing the temperature data of adjacent time periods, and controls whether the first and third electric heaters 131 and 133 and the second electric heater 132 are heated when the temperature difference or the temperature difference is lower than a threshold value.

The temperature difference between the previous time and the next time or the accumulated temperature difference detected by the temperature sensing element can be used for judging that the evaporation of the fluid in the pipe is basically saturated and the volume of the fluid in the pipe is basically not changed greatly. The fluid is made to undergo volume reduction to thereby realize vibration. When the temperature difference is reduced to a certain degree, the internal fluid starts to enter a stable state again, and the fluid needs to be heated to evaporate and expand again, so that the electric heater needs to be started for heating.

The stable state of the fluid is judged according to the temperature difference or the accumulation of the temperature difference change, so that the result is more accurate, and the problem of error increase caused by aging due to the problem of operation time is solved.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, if the average temperature of the left or right or left and right tube boxes in the previous period is T1 and the average temperature of the left or right or left and right tube boxes in the next period is T2, the controller controls the first and third electric heaters to stop heating and the second electric heater to heat if the difference between T2 and T1 is lower than the threshold value.

Preferably, when the second electric heater performs heating and the first and third electric heaters do not perform heating, if the average temperature of the middle tube box in the previous period is T1 and the average temperature of the middle tube box in the adjacent subsequent period is T2, the controller controls the first and third electric heaters to perform heating and the second electric heater to stop heating if the difference between T2 and T1 is lower than the threshold value.

The operation state of the electric heater is determined according to different conditions through the difference of the heating temperature of different heaters.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, if the average temperature of the left or right or left and right tube boxes in the previous period is T1 and the average temperature of the left or right or left and right tube boxes in the next period is T2, if T1 is T2, the heating is determined according to the following conditions:

if the T1 is higher than the temperature of the first data, the controller controls the first and third electric heaters to stop heating and the second electric heater to heat; wherein the first data is greater than the temperature of the phase change fluid after the phase change; preferably the first data is the temperature at which the phase change fluid is substantially phase-changed;

if T1 is less than or equal to the temperature of the second data, the controller controls the first and third electric heaters to continue heating, and the second electric heater continues to stop heating, wherein the second data is less than or equal to the temperature at which the phase change fluid does not change phase.

The first data is temperature data of a sufficiently heated state, and the second data is temperature data of no heating or temperature data of the beginning of heating. The judgment of the temperature is also used for determining whether the current electric heater is in a heating state or a non-heating state, so that the operation state of the electric heater is determined according to different conditions.

Preferably, when the second electric heater performs heating and the first third electric heater does not perform heating, if the temperature of the middle tube box of the previous period is T1 and the temperature of the middle tube box of the adjacent subsequent period is T2, if T1 is T2, heating is judged according to the following conditions:

if the T1 is higher than the temperature of the first data, the controller controls the second electric heater to stop heating, and the first electric heater and the third electric heater to heat; wherein the first data is greater than the temperature of the phase change fluid after the phase change; preferably the first data is a temperature at which the phase change fluid substantially changes phase;

if T1 is less than or equal to the temperature of the second data, the controller controls the second electric heater to continue heating, and the first and third electric heaters continue to stop heating, wherein the second data is less than or equal to the temperature at which the phase change fluid does not change phase.

Preferably, each of the plurality of temperature sensing elements is provided with n temperature sensing elements, and the temperature P of the current time period is calculated sequentially_iTemperature Q of the preceding time period_i-1Difference D of_i＝P_i-Q_i-1And for n temperature differences D_iPerforming arithmetic cumulative summationWhen the value of Y is lower than a set threshold value, the controller controls the first electric heater, the second electric heater and the third electric heater to stop heating or continue heating.

The operation state of the electric heater is determined according to different conditions through the difference of the heating temperature of different heaters.

Preferably, if Y is 0, heating is judged according to the following:

if P is_iIf the arithmetic mean of the first data is higher than the temperature of the first data, the controller controls the heated electric heater to stop heating and controls the unheated electric heater to heat when the temperature of the first data is lower than a threshold value; wherein the first data is greater than the temperature of the phase change fluid after the phase change; preferably the temperature at which the phase change fluid substantially changes phase;

if P is_iIs less than a temperature of second data, which is less than or equal to a temperature at which no phase change of the phase change fluid occurs, the controller controls the heated electric heater to continue heating when the temperature is lower than a threshold value.

Preferably, the period of time for measuring the temperature is 1 to 10 minutes, preferably 3 to 6 minutes, and further preferably 4 minutes.

Preferably, the temperature value may be an average temperature value over a period of the time period. The temperature at a certain moment in time may also be used. For example, preferably both are temperatures at the end of the time period.

Thirdly, automatically adjusting vibration based on liquid level

Preferably, the left, middle and right tank boxes 2, 8 and 14 are respectively provided with a first liquid level sensor, a second liquid level sensor and a third liquid level sensor for detecting liquid levels in the left, middle and right tank boxes, the first, second and third liquid level sensors are in data connection with the controller, the controller extracts liquid level data of the left, right and middle tank boxes according to a time sequence, the liquid level difference or the accumulation of the liquid level difference change is obtained by comparing the liquid level data of adjacent time periods, and when the liquid level data is lower than a threshold value, the controller controls whether the first and third electric heaters 131 and 133 and the second electric heater 132 are heated.

Through the liquid level difference or the accumulated liquid level difference of the front time period and the rear time period detected by the liquid level sensing element, the evaporation of the fluid inside can be judged to be basically saturated through the liquid level difference, and the volume of the fluid inside is basically not changed greatly. The fluid is made to undergo volume reduction to thereby realize vibration. When the liquid level difference is reduced to a certain degree, the internal fluid starts to enter a stable state again, and at the moment, the fluid needs to be heated so as to be evaporated and expanded again, so that the electric heater needs to be started for heating.

The stable state of the fluid is judged according to the liquid level difference or the accumulation of the change of the liquid level difference, so that the result is more accurate, and the problem of error increase caused by aging due to the problem of operation time is solved.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, if the average liquid level of the left or right or left and right channel boxes in the previous time period is L1 and the average liquid level of the left or right or left and right channel boxes in the next time period is L2, if the difference between L1 and L2 is lower than the threshold, the controller controls the first and third electric heaters to stop heating and the second electric heater to heat.

Preferably, when the second electric heater performs heating and the first and third electric heaters do not perform heating, if the average liquid level of the middle tube box in the previous period is L1 and the average liquid level of the middle tube box in the next subsequent period is L2, the controller controls the first and third electric heaters to perform heating and the second electric heater to stop heating if the difference between L1 and L2 is lower than the threshold value.

The operation state of the electric heater is determined according to different conditions through the difference value of the liquid levels heated by different heaters.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, if the average liquid level of the left or right or left and right tank in the previous period is L1, and the average liquid level of the left or right or left and right tank in the next period is L2, if L1 is T2, the heating is determined according to the following conditions:

if the L1 is less than the liquid level of the first data, the controller controls the first electric heater and the third electric heater to stop heating, and the second electric heater carries out heating; wherein the first data is less than or equal to the liquid level of the phase-change fluid after the phase change; preferably the first data is a level at which the phase change fluid is substantially phase changed;

if T1 is greater than or equal to the level of the second data, which is equal to the level at which the phase-change fluid does not change phase, the controller controls the first and third electric heaters to continue heating and the second electric heater to stop heating.

The first data is liquid level data in a fully heated state, and the second data is liquid level data in the state of no heating or the beginning of heating. Through the judgment of the liquid level, whether the current electric heater is in a heating state or a non-heating state is also determined, so that the operation state of the electric heater is determined according to different conditions.

Preferably, when the second electric heater performs heating and the first third electric heater does not perform heating, if the liquid level of the middle tube box of the previous period is L1 and the liquid level of the middle tube box of the adjacent subsequent period is L2, if L1 is L2, heating is judged according to the following conditions:

if the L1 is less than the liquid level of the first data, the controller controls the second electric heater to stop heating, and the first electric heater and the third electric heater to heat; wherein the first data is equal to or less than the liquid level of the phase-change fluid after the phase change; preferably the first data is a level at which the phase change fluid is substantially phase changed;

if L1 is less than or equal to the level of the second data, which is equal to the level at which the phase-change fluid does not change phase, the controller controls the second electric heater to continue heating, and the first and third electric heaters to stop heating.

Preferably, each channel is provided with n liquid level sensing elements, and the liquid level P in the current time period is calculated in sequence_iAnd the liquid level Q of the previous time period_i-1Difference D of_i＝P_i-Q_i-1And for n liquid level differences D_iPerforming arithmetic cumulative summationWhen the value of Y is lower than a set threshold value, the controller controls the first electric heater, the second electric heater and the third electric heater to stop heating or continue heating.

The operation state of the electric heater is determined according to different conditions through the difference value of the liquid levels heated by different heaters.

Preferably, if Y is 0, heating is judged according to the following:

if P is_iIs less than or equal to the level of the first data, is below a thresholdThe controller controls the electric heater to stop heating, and the electric heater which is not heated carries out heating; wherein the first data is greater than the liquid level of the phase-change fluid after the phase change; preferably a level at which the phase change fluid is substantially phase-changed;

if P is_iIs greater than the level of the second data, and is less than or equal to the level at which the phase change fluid does not undergo a phase change, the controller controls the heated electric heater to continue heating when the second data is less than the threshold value.

Preferably, the period of time for measuring the liquid level is 1 to 10 minutes, preferably 3 to 6 minutes, and further preferably 4 minutes.

Fourthly, automatically adjusting vibration based on speed

Preferably, a speed sensing element is arranged inside the left coil and/or the right coil and used for detecting the flow speed of the fluid in the free end of the tube bundle, the speed sensing element is in data connection with the controller, the controller extracts flow speed data according to a time sequence, the flow speed difference or the accumulation of the flow speed difference change is obtained through comparison of the flow speed data of adjacent time periods, and when the flow speed difference or the accumulation of the flow speed difference is lower than a threshold value, the controller controls the first electric heater 131, the third electric heater 133 and the second electric heater 132 to heat or not.

The flow rate difference between the front and rear time periods or the cumulative flow rate difference detected by the flow rate sensing element can be used to determine that the evaporation of the fluid inside is almost saturated and the volume of the fluid inside is not changed much. The fluid is made to undergo volume reduction to thereby realize vibration. When the flow rate difference is reduced to a certain extent, the internal fluid starts to enter a stable state again, and heating is needed at the moment, so that the fluid is evaporated and expanded again, and therefore, the electric heater needs to be started for heating.

By determining the steady state of the fluid based on the flow rate differential or the accumulation of changes in flow rate differential, the results are more accurate and there is no problem of increased error due to aging caused by run time problems.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, if the flow rate in the previous time interval is V1 and the flow rate in the next following time interval is V2, the controller controls the first and third electric heaters to stop heating and the second electric heater to heat if the difference between V2 and V1 is lower than the threshold value.

Preferably, when the second electric heater performs heating and the first and third electric heaters do not perform heating, if the flow rate of the previous time period is V1 and the flow rate of the adjacent subsequent time period is V2, the controller controls the first and third electric heaters to perform heating and the second electric heater to stop heating if the difference between V2 and V1 is lower than the threshold value.

The operation state of the electric heater is determined according to different conditions through the difference of the flow rate heated by different heaters.

Preferably, when the first and third electric heaters heat and the second electric heater does not heat, if the flow rate in the preceding time period is V1 and the flow rate in the adjacent following time period is V2, if V1 is V2, the heating is judged according to the following conditions:

if the V1 is larger than the flow rate of the first data, the controller controls the first electric heater and the third electric heater to stop heating, and the second electric heater carries out heating; wherein the first data is greater than or equal to the flow rate of the phase-change fluid after the phase change; preferably the first data is a flow rate at which the phase-change fluid is substantially phase-changed;

if V1 is less than or equal to the flow rate of the second data, the controller controls the first and third electric heaters to continue heating and the second electric heater to stop heating, wherein the second data is equal to the flow rate at which the phase-change fluid does not change phase.

The first data is flow rate data in a fully heated state, and the second data is flow rate data in the absence of heating or in the beginning of heating. The judgment of the flow rate also determines whether the current electric heater is in a heating state or a non-heating state, so that the operation state of the electric heater is determined according to different conditions.

Preferably, when the second electric heater performs heating and the first third electric heater does not perform heating, if the flow rate of the middle tube box of the previous period is V1 and the flow rate of the middle tube box of the adjacent subsequent period is V2, if V1 is V2, heating is judged according to the following:

if the V1 is larger than the flow rate of the first data, the controller controls the second electric heater to stop heating, and the first electric heater and the third electric heater to heat; wherein the first data is equal to or less than the flow rate of the phase-change fluid after the phase change; preferably the first data is a flow rate at which the phase change fluid is substantially phase-changed;

if V1 is greater than or equal to the flow rate of the second data, the controller controls the second electric heater to continue heating, and the first and third electric heaters continue to stop heating, wherein the second data is equal to the flow rate at which the phase-change fluid does not change phase.

Preferably, a plurality of flow velocity sensing elements are set to be n, and the flow velocity P in the current time period is calculated in sequence_iFlow rate Q of the previous time period_i-1Difference D of_i＝P_i-Q_i-1And for n flow rate differences D_iPerforming arithmetic cumulative summationWhen the value of Y is lower than a set threshold value, the controller controls the first electric heater, the second electric heater and the third electric heater to stop heating or continue heating.

The operation state of the electric heater is determined according to different conditions through the difference of the flow rate heated by different heaters.

Preferably, if Y is 0, heating is judged according to the following:

if P is_iIf the arithmetic mean of the first data is larger than the flow rate of the first data, the controller controls the heated electric heater to stop heating and controls the unheated electric heater to heat when the flow rate of the first data is lower than a threshold value; wherein the first data is greater than the flow rate of the phase-change fluid after the phase change; preferably a flow rate at which the phase change fluid is substantially phase-changed;

if P is_iIs less than a second data flow rate at which no phase change of the phase change fluid occurs, the controller controls the heated electric heater to continue heating below a threshold value.

Preferably, the period of time for measuring the flow rate is 1 to 10 minutes, preferably 3 to 6 minutes, and further preferably 4 minutes.

Preferably, the flow rate value may be an average flow rate value in the left coil and the right coil.

Preferably, the speed sensing element is disposed at the free end. Through setting up at the free end, can perceive the speed change of free end to realize better control and regulation.

Preferably, the axes of the left, right and middle headers are connected on a straight line or on a plane.

Preferably, the pipe diameters of the left pipe box 2 and the right pipe box 14 are smaller than the pipe diameter of the middle pipe box 8. The pipe diameter of the middle pipe box 8 is preferably 1.4-1.5 times of the pipe diameters of the left pipe box 2 and the right pipe box 14. Through the pipe diameter setting of left channel case, right channel case and middle channel case, can guarantee that the fluid carries out the phase transition and keeps the same or close transmission speed in the box of left and right sides and middle channel case to guarantee the homogeneity of heat transfer.

Preferably, the connection position 9 of the coil pipe at the left channel box is lower than the connection position of the coil pipe and the middle channel box. This ensures that steam can rapidly enter the intermediate header. Similarly, the connecting position of the coil pipe at the right pipe box is lower than the connecting position of the middle pipe box and the coil pipe

Preferably, as shown in fig. 3, the steam drum is a drum with a circular cross section, and a plurality of electric heating devices are arranged in the steam drum.

Preferably, as shown in fig. 3, one of the plurality of electric heating devices disposed in the steam drum is disposed at the center of the steam drum to become a central electric heating device, and the others are distributed around the center of the steam drum to become peripheral electric heating devices. Through the structural design, the fluid in the steam pocket can fully achieve the vibration purpose, and the heat exchange effect is improved.

Preferably, the extended lines of the connecting lines between the middle tube box, the left tube box and the right tube box of the peripheral electric heating device are formed in an equilateral polygon shape, and the center of the circle of the middle tube box of the peripheral electric heating device is arranged at the midpoint of the equilateral polygon.

The center of a center pipe box of the central electric heating device is arranged at the center of the cross section of the steam pocket.

Preferably, the heating power of the single peripheral electric heating means is smaller than the heating power of the central electric heating means. Through the design, the center reaches higher vibration frequency to form a central vibration source, so that the periphery is influenced, and better heat transfer enhancement and descaling effects are achieved.

Preferably, on the same horizontal heat exchange section, the fluid needs to achieve uniform vibration, and uneven heat exchange distribution is avoided. It is therefore necessary to distribute the amount of heating power among the different electric heating devices reasonably. Experiments show that the heating power ratio of the central electric heating device to the peripheral tube bundle electric heating device is related to two key factors, wherein one of the two key factors is the distance between the peripheral electric heating device and the center of the steam drum (namely the distance between the circle center of the peripheral electric heating device and the circle center of the central electric heating device) and the diameter of the steam drum. Therefore, the invention optimizes the optimal proportional distribution of the pulsating flow according to a large number of numerical simulations and experiments.

Preferably, the radius of the inner wall of the steam drum is B, the center of a middle pipe box of the central electric heating device is arranged at the center of a circular section of the steam drum, the distance from the center of a middle pipe box of the peripheral electric heating device to the center of the circular section of the steam drum is S, the centers of middle pipe boxes of adjacent peripheral electric heating devices are respectively connected with the centers of the circular sections, an included angle formed by the two connecting lines is a, the heating power of a single peripheral electric heating device is W2, and the heating power of a single central electric heating device is W1, so that the following requirements are met:

W1/W2 ═ a-B ═ Ln (B/S); ln is a logarithmic function;

a, b are coefficients, wherein 1.9819< a <1.9823,0.5258< b < 0.5264;

1.25<B/S<2.1；

1.6<W1/W2<1.9。

wherein 35 ° < a <80 °.

Preferably, the number of the four-side distribution is 4-5.

Preferably, B is 1600-2400 mm, preferably 2000 mm; s is 1200-2000 mm, preferably 1700 mm; the diameter of the heat exchange tube is 12-20 mm, preferably 16 mm; the outermost diameter of the pulsating coil is 300-. The diameter of the riser is 100-116 mm, preferably 108 mm, the height of the riser is 1.8-2.2 m, preferably 2 m, and the spacing between adjacent pulse tubes is 65-100 mm. Preferably around 80 mm.

The total heating power is preferably 6000-14000W, and more preferably 7500W.

More preferably, a is 1.9821 and b is 0.5261.

The steam outlet is arranged in the middle of the upper wall of the steam drum.

Preferably, the heating fluid is a vapor-liquid phase-change fluid.

Preferably, the left header 2, the middle header 8, the right header 14, and the coil 1 are all of a circular tube structure.

Preferably, the tube bundle of the coil 1 is an elastic tube bundle.

The heat exchange coefficient can be further improved by arranging the tube bundle of the coil 1 with an elastic tube bundle.

Preferably, the first end of the inner tube bundle of the left coil 101 is connected to the left tube box 2, the second end is connected to one end of the adjacent outer tube bundle, one end of the outermost tube bundle of the left coil 101 is connected to the middle tube box 8, and the ends of the adjacent tube bundles are connected to each other, thereby forming a serial structure. The first end of the inner tube bundle of the right coil pipe 102 is connected with the right tube box 14, the second end is connected with one end of the adjacent outer tube bundle, one end of the outermost tube bundle of the right coil pipe 102 is connected with the middle tube box 8, and the end parts of the adjacent tube bundles are communicated, so that a series structure is formed.

As shown in fig. 4, there are 4 tube bundles of coil 1, with tube bundles A, B, C, D in communication. Of course, the number is not limited to four, and a plurality of the connecting structures can be arranged according to the requirement, and the specific connecting structure is the same as that of fig. 4.

As shown in fig. 8, having a circular cross-section, the plurality of electric heating means are disposed within the circular housing. Preferably, three electric heating device tubes are arranged in the shell, and extension lines of central connecting lines of the left header, the right header and the middle evaporation tube of the loop heat pipe form an inscribed regular triangle with a circular cross section. Through such setting, can make and to fully reach vibrations and heat transfer purpose in can making the heater, improve the heat transfer effect.

Although the present invention has been described with reference to the preferred embodiments, it is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

25页详细技术资料下载

上一篇：一种医用注射器针头装配设备

下一篇：一种负荷侧电蓄热锅炉调频系统

Pressure-balanced steam generator

相关技术

网友询问留言