阅读说明：本技术 一种水锤消除装置 (Water hammer eliminating device ) 是由 姜珊 李佳奇 王庆明 朱永楠 何国华 秦长海 王丽珍 翟家齐 何凡 何兰超 于 2021-07-28 设计创作，主要内容包括：本发明提供了一种水锤消除装置,其包括连接管,连接管外壁上设置有连接体,连接管上设置有与连接体连通的通道；连接体的设置有出口管,出口管的上安装有罐体；出口管与罐体之间安装有流量阀；罐体的罐口处内设置有内胆组件；罐体上设置有液位组件和测压组件,罐体顶部设置有进气管,进气管上安装有进气阀。(The invention provides a water hammer eliminating device which comprises a connecting pipe, wherein a connecting body is arranged on the outer wall of the connecting pipe, and a channel communicated with the connecting body is arranged on the connecting pipe; the connecting body is provided with an outlet pipe, and a tank body is arranged on the outlet pipe; a flow valve is arranged between the outlet pipe and the tank body; an inner container assembly is arranged in the tank opening of the tank body; the tank body is provided with a liquid level assembly and a pressure measuring assembly, the top of the tank body is provided with an air inlet pipe, and the air inlet pipe is provided with an air inlet valve.)

1. The water hammer eliminating device is characterized by comprising a connecting pipe (1), wherein a connecting body (5) is arranged on the outer wall of the connecting pipe (1), and a channel (4) communicated with the connecting body (5) is arranged on the connecting pipe (1); an outlet pipe (2) is arranged on the connecting body (5), and a tank body (9) is arranged on the outlet pipe (2); a flow valve (3) is arranged between the outlet pipe (2) and the tank body (9);

an inner container assembly is arranged in the tank opening of the tank body (9); the tank is characterized in that a liquid level assembly and a pressure measuring assembly (12) are arranged on the tank body (9), an air inlet pipe (10) is arranged at the top of the tank body (9), and an air inlet valve (11) is installed on the air inlet pipe (10).

2. The water hammer eliminating device according to claim 1, wherein the liner assembly comprises a first annular housing (15) and a liner body (14) which is arranged on the first housing (15) and is elastic; the inner wall of the tank body (9) at the opening is provided with a step hole, the outer wall of the first shell (15) is provided with a first lug plate installed in a matched mode with the step hole, and the first lug plate is connected to the step hole through a bolt.

3. The water hammer arrestor of claim 2, wherein the first housing (15) has an outer diameter that is transition fit with an inner diameter of the opening of the tank (9).

4. The water hammer removing device according to claim 3, wherein the top surface of the first housing (15) is provided with an annular groove (19), the opening of the liner body (14) is embedded in the annular groove (19), an insert (16) is inserted between the liner body (14) and the outer side surface of the annular groove (19), and the insert (16) is connected to the top surface of the first housing (15) through an adjusting bolt (17).

5. The water hammer removing device according to claim 4, wherein the insert (16) includes a second housing having an annular shape for insertion between the inner bladder body (14) and an outer side surface of the annular groove (19), the outer side surface of the second housing being an inclined surface, and at least two second lug plates fixed to a top surface of the second housing, the second lug plates being connected to the top surface of the first housing (15) by an adjusting bolt (17).

6. The water hammer arrestor of claim 5, wherein the annular groove (19) has a plurality of protrusions on an inner surface thereof.

7. The water hammer removing device according to claim 1 or 6, wherein the liquid level assembly comprises a measuring cylinder (8) mounted on a tank body (9), a base (20) bolted to the bottom of the measuring cylinder (8), and a horizontal rod (7); the measuring cylinder (8) is internally provided with a cross sliding groove (21) along the length direction, one end of the horizontal rod (7) is provided with a cross sliding block (22) in sliding fit with the cross sliding groove (21), the other end of the horizontal rod extends out of the measuring cylinder (8) to be positioned in the tank body (9) and is provided with a transparent box (13), and a detection element for measuring the height of the inner container assembly is arranged in the transparent box (13).

8. The water hammer arrester of claim 7 wherein a spring (6) is disposed between the base (20) and the cross-shaped slider (22).

Technical Field

The invention relates to the technical field of drainage and pipelines, in particular to a water hammer eliminating device.

Background

When a pump station has a pump-stopping water hammer accident, the pump station will cause 'water running' and water stopping, and seriously cause the pump room to be flooded, so that a factory is forced to stop production and break down infrastructure, and other equipment is damaged by the pressure of the water hammer to cause casualties, the water hammer effect means that when a water-feeding pump is started and stopped, water flow impacts a pipeline to generate serious water hammer, because the inner wall of the pipeline is smooth and water flows freely in the water pipe, when an opened valve is suddenly closed or the water-feeding pump is stopped, the water flow generates a pressure on the valve and the pipeline wall, mainly the valve or the pump, and because the pipeline wall is smooth, the subsequent water flow quickly reaches the maximum under the action of inertia, and generates a destructive effect, namely the 'water hammer effect' in hydraulics, namely the positive water hammer, and conversely, when the closed valve is suddenly opened or the water-feeding pump is started, the water hammer can also be generated, the water hammer is called as a negative water hammer, but the negative water hammer is not large, the instantaneous pressure generated by the water hammer can reach dozens of times or even hundreds of times of the normal working pressure in a pipeline, the large-amplitude pressure fluctuation can cause a pipeline system to generate strong vibration or noise and possibly damage a valve joint, the pipeline system is greatly damaged, and the water hammer effect has great destructiveness: too high a pressure will cause the pipe to break, whereas too low a pressure will cause the pipe to collapse and also damage the valves and fittings, and since the fluid has kinetic energy and a certain degree of compressibility, a large change in flow rate in a very short time will cause too high and too low a pressure impact on the pipe, which will stress the pipe wall and cause noise as if a hammer were hitting the pipe, so called the water hammer effect.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a water hammer eliminating device, and aims to solve the problem that equipment such as a main water pipe, a water pump and the like are damaged due to the water hammer effect after the existing pump is suddenly stopped.

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

the water hammer eliminating device comprises a connecting pipe, wherein a connecting body is arranged on the outer wall of the connecting pipe, and a channel communicated with the connecting body is arranged on the connecting pipe; the connecting body is provided with an outlet pipe, and a tank body is arranged on the outlet pipe; a flow valve is arranged between the outlet pipe and the tank body;

an inner container assembly is arranged in the tank opening of the tank body; the tank body is provided with a liquid level assembly and a pressure measuring assembly, the top of the tank body is provided with an air inlet pipe, and the air inlet pipe is provided with an air inlet valve.

Further, the liner assembly comprises an annular first shell and an elastic liner body arranged on the first shell; the inner wall of the tank body at the opening is provided with a step hole, the outer wall of the first shell is provided with a first lug plate which is matched with the step hole, and the first lug plate is connected to the step hole through a bolt.

Further, the outer diameter of the first shell is in transition fit with the inner diameter of the opening of the tank body.

Furthermore, the top surface of the first shell is provided with an annular groove, the opening of the liner body is embedded in the annular groove, an insert is inserted between the liner body and the outer side surface of the annular groove, and the insert is connected to the top surface of the first shell through an adjusting bolt.

Furthermore, the plug-in components include be used for inserting between inner bag body and the ring channel lateral surface and for annular second casing and fix two at least second otic placodes on second casing top surface, the lateral surface of second casing is the inclined plane, and the second otic placode passes through adjusting bolt and connects on the top surface of first casing.

Furthermore, a plurality of bulges are arranged on the inner side surface of the annular groove.

Further, the liquid level assembly comprises a measuring cylinder arranged on the tank body, a base connected to the bottom of the measuring cylinder through bolts and a horizontal rod; the measuring cylinder is internally provided with a cross-shaped sliding groove along the length direction, one end of the horizontal rod is provided with a cross-shaped sliding block in sliding fit with the cross-shaped sliding groove, the other end of the horizontal rod extends out of the measuring cylinder and is positioned in the tank body and is provided with a transparent box, and a detection element for measuring the height of the liner assembly is arranged in the transparent box.

Further, a spring is arranged between the base and the cross-shaped sliding block.

The invention has the beneficial effects that:

principle of primary absorption of water hammer shock wave: an accommodating cavity is formed between the connecting pipe and the connecting body, and air is automatically collected through the special shape in the pipeline according to the fluid mechanics principle to form an air cavity; when water is normally pumped, due to the arrangement of the connecting body, a vortex is formed near the passage opening, the accommodating cavity forms negative pressure, and the gravity of bubbles in water is smaller than that of water, and the bubbles can be collected into the accommodating cavity through the communication opening to form an air cavity in the accommodating cavity;

when the water pump is suddenly stopped, the water hammer shock waves enter the accommodating cavity through the channel, an air cavity formed in the accommodating cavity is compressed, and the water hammer shock waves are absorbed for the first time and in time; thereby protecting equipment and pipelines; the problems of slow operation time and low equipment precision are also solved; compared with the existing water hammer impact device, the scheme does not need to be precise in the aspect of using equipment, so that the capital is saved.

The principle of secondary absorption of water hammer shock waves; opening the flow valve, filling water in the connecting pipe into the liner assembly, and closing the flow valve when the liner body extends to the preset value of the liquid level assembly; according to the water pressure value in the main water pipe, the air inlet valve is opened, the air is filled into the tank body through the air inlet pipe, the air pressure in the tank body is measured to be equal to the water pressure value through the load cell, and the air inlet valve is closed.

Along with the primary absorption water hammer shock wave, the flow valve is opened, and the atmospheric pressure in the jar body is greater than the water pressure in the main water pipe, and the atmospheric pressure in the jar body pours into the water in the expandable inner bag into in the main water pipe and with the high pressure water hammer wave that makes a round trip to vibrate each other in order to cushion the impact force of high pressure water hammer wave, cushion the high pressure water hammer wave back for a few times repeatedly, water hammer wave pressure can reduce gradually until steady, has protected the pipeline once more.

By absorbing the water hammer shock waves twice, the pipeline and the equipment are safer, so that the invention has wide application.

In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions, and the advantageous effects brought by the technical features of the technical solutions described above, other technical problems that the present invention can solve, other technical features included in the technical solutions, and advantageous effects brought by the technical features will be described in further detail in the detailed description.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of a water hammer removing device according to the present invention.

Fig. 2 is a partial view of B in fig. 1.

Figure 3 is a front view of the liner assembly.

Fig. 4 is a partial view of a in fig. 3.

FIG. 5 is a front view of the fluid level assembly.

FIG. 6 is a view B-B of FIG. 5.

Fig. 7 is a top view of the horizontal rod.

Fig. 8 is a front view of the horizontal bar.

Wherein: 1. a connecting pipe; 2. an outlet pipe; 3. a flow valve; 4. a channel; 5. a linker; 6. a spring; 7. a horizontal bar; 8. a measuring cylinder; 9. a tank body; 10. an air inlet pipe; 11. an intake valve; 12. a pressure measuring assembly; 13. a transparent box; 14. a liner body; 15. a first housing; 16. a plug-in; 17. adjusting the bolt; 19. an annular groove; 20. a base; 21. a cross-shaped chute; 22. a cross-shaped slider.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 8, the present invention provides a water hammer removing device, which includes a connecting pipe 1, wherein the connecting pipe 1 is connected to a pipe orifice of a protection device through a flange. The welding has connector 5 on 1 outer wall of connecting pipe, be provided with the passageway 4 with connector 5 intercommunication on the connecting pipe 1, when the installation, the rivers direction in the connecting pipe 1 is provided with passageway 4 one side from keeping away from 4 one side flow directions, form the vortex in passageway 4 department like this, make the bubble store hold the chamber in, a plurality of bubbles form the bubble layer in holding the chamber at last, like this when not opening flow valve 3, hold the chamber in the bubble layer just directly be used for first absorption water hammer shock wave, protective apparatus.

The connector 5 is provided with an outlet pipe 2, and a tank body 9 is arranged on the outlet pipe 2; a flow valve 3 is arranged between the outlet pipe 2 and the tank body 9; referring to fig. 1, the outlet pipe 2, flow valve 3 and tank 9 are preferably flanged at their mouth.

An inner container assembly is arranged in the tank opening of the tank body 9; a liquid level assembly and a pressure measuring assembly 12 are arranged on the tank body 9, an air inlet pipe 10 is arranged at the top of the tank body 9, and an air inlet valve 11 is arranged on the air inlet pipe 10; the tank body 9, the liner assembly, the liquid level assembly, the air inlet pipe 10 and the pressure measuring assembly 12 are used for absorbing water hammer shock waves for the second time;

in this scheme, through twice absorption water hammer shock wave, can avoid because of operation delay or equipment are not smart, can not in time open water hammer impact device, cause and can not in time protect equipment.

Referring to fig. 1 and 2, the liner assembly includes a ring-shaped first housing 15 and a liner body 14 disposed on the first housing 15 and being elastic; the opening of the tank body 9 is a cylinder with an annular section, a step hole is formed in the inner wall of the tank body 9 at the opening, a first lug plate which is installed in a matched mode with the step hole is arranged on the outer wall of the first shell 15, and the first lug plate is connected to the step hole through a bolt; wherein the bottom surface of the first ear plate is flush with the bottom surface of the first housing 15 after assembly, which may be arranged in particular with reference to fig. 2.

Preferably, the outer diameter of the first shell 15 is in transition fit with the inner diameter of the opening of the tank 9; the gap between the outer side surface of the first shell 15 and the inner side surface of the opening of the tank 9 is too large, so that the first shell 15 is prevented from being bent and deformed by water pressure in the first shell 15.

Referring to fig. 1, 3 and 4, a liner body 14 is provided for holding water. The top surface of first casing 15 is opened there is ring channel 19, and the opening of inner bag body 14 is inlayed in ring channel 19, and it has plug-in 16 to peg graft between the lateral surface of inner bag body 14 and ring channel 19, and the plug-in 16 that sets up is arranged in fixing inner bag body 14 better in ring channel 19, when using, flushes to inner bag body 14, avoids inner bag body 14 and second casing to break away from. The insert 16 is connected to the top surface of the first casing 15 through the adjusting bolt 17, and since the insert 16 is connected to the first casing 15 through the adjusting bolt 17, the inner container body 14 can be replaced conveniently by detaching the adjusting bolt.

The insert 16 comprises an annular second shell for insertion between the liner body 14 and the outer side of the annular groove 19, the second shell cooperating with the annular groove 19. At least two second otic placodes are fixed on second casing top surface, and the quantity of second otic placode is preferred four, and four second otic placodes are circular array and distribute, make the second casing atress more even like this, avoid appearing stress too big, lead to the second casing to appear bending deformation etc..

Referring to fig. 1, 3 and 4, the outer side surface of the second housing is an inclined surface, and the second lug plate is connected to the top surface of the first housing 15 by an adjusting bolt 17; by screwing the adjusting screw, the inclined plane of the second shell slides downwards along with the descending of the adjusting screw on the outer side surface of the annular groove 19, so that the inner side surface of the second shell continuously extrudes the inner container body 14 on the inner side surface of the annular groove 19, and the inner container body 14 is better fixed in the annular groove 19. The adjusting screw is provided for connecting the insert 16 to the top surface of the second housing, and for changing the depth of the insert 16 in the annular groove 19, i.e. adjusting the tightness of the compression of the bladder body 14 in the annular groove 19.

The outer side surface of the second shell is set to be an inclined plane with a larger upper radius and a smaller lower radius, and the inclined plane is matched with an adjusting screw, so that the liner body 14 can be conveniently and tightly extruded in the annular groove 19. The inner side surface of the annular groove 19 is provided with a plurality of protrusions, the protrusions are preferably triangular pyramids, and the tips of the triangular pyramids are in contact with the liner body 14, so that the liner body 14 is further fixed in the annular groove 19.

Referring to fig. 1, 5, 6, 7 and 8, the level assembly includes a measuring cylinder 8 mounted on a tank 9, the measuring cylinder 8 being bolted to the tank 9; the graduated cylinder 8 is preferably made of toughened glass, so that the conditions of the cross-shaped sliding block 22 and the sliding chute can be observed conveniently, and the clamping of a master is prevented; the height of the horizontal rod 7 in the measuring cylinder 8 can be observed through the measuring cylinder 8, and the height of the inner container body 14 can be further judged.

The bottom of the measuring cylinder 8 is bolted with a base 20, so that a cross-shaped sliding block 22 and a spring 6 can be conveniently installed in the measuring cylinder 8, and two ends of the spring 6 can be welded on the top surface of the base 20 and the bottom surface of the cross-shaped sliding block 22. The inside cross spout 21 that is provided with along its length direction of graduated flask 8, the one end of horizontal rod 7 is provided with the cross slider 22 with cross spout 21 sliding fit, and the other end extends graduated flask 8 and is located jar body 9 and installs transparent case 13, is equipped with the detecting element who measures the inner bag subassembly height in the transparent case 13. One groove of the cross-shaped sliding groove 21 is arranged on the measuring cylinder 8 in a penetrating way, so that the cross-shaped sliding groove is conveniently matched with the groove on the tank body 9 for installation.

By arranging the cross-shaped sliding block 22 and the cross-shaped sliding groove 21, the cross-shaped sliding block 22 can ascend or descend in the cross-shaped sliding groove 21; due to the structural characteristics of the cross-shaped slider 22 and the cross-shaped sliding groove 21, the horizontal rod 7 can be prevented from swinging left and right. The spring 6 is arranged to ensure that the horizontal rod 7 can descend slowly, thereby indirectly protecting the detection element. The transparent box 13 is mounted on the horizontal bar 7, and in particular, reference can be made to fig. 7 and 8. The detection element is arranged in the transparent box, but the detection head of the detection element is downward, so that the detection element is convenient for measuring the inner container body 14; by arranging the measuring cylinder and the detection element, the liner assembly 14 can be detected more accurately. The detection element may be an infrared displacement sensor.

As shown in fig. 5, the liquid level assembly is arranged to measure and determine the condition of the liner body 14 after the liner body 14 is filled with water, specifically, when the liner body 14 is filled with water normally, the horizontal rod 7 reaches a predetermined height, and the value measured by the measuring element reaches a preset value; when the liner body 14 is leaked or twisted and cannot be normally unfolded, the height of the horizontal rod cannot reach the preset height, and the value measured by the measuring element cannot reach the preset value; at the moment, the staff can carry out water discharging and refilling experiments, and the liner body 14 can be replaced and maintained if the results are the same for two times or more.

The working principle of the liquid level assembly is as follows: when the inner container body 14 is filled with water and expanded, the other end of the horizontal rod 7 is pushed by the inner container body 14 to rise, and simultaneously, the cross-shaped sliding block 22 on the horizontal rod 7 slides and rises on the cross-shaped sliding groove 21, and the spring 6 is stretched. When the liner body 14 discharges water and contracts rapidly, the other end of the horizontal rod 7 is separated from the liner body 14, the horizontal rod 14 descends, meanwhile, the cross-shaped sliding block 22 on the horizontal rod 7 descends in a sliding mode through the cross-shaped sliding groove 21, the spring 6 is compressed, and the spring 6 plays a buffering role at the moment.

The installation mode of the water hammer eliminating device is as follows: the water hammer eliminating device is installed on the main water pipe, and the channel 4 is arranged below the water flow, that is, the water flow direction in the connecting pipe 1 flows from the side far away from the channel 4 to the side provided with the channel 4.

The formation principle of water hammer shock wave: when the water pump of the main water pipe is stopped suddenly, the pressure in the main water pipe is reduced, the transient static water in the main water pipe generates a backflow high-pressure water wave under the action of gravity and a static head, and the backflow high-pressure water wave impacts a valve at the position of the water pump to generate a back-oscillation high-pressure water hammer wave.

Principle of primary absorption of water hammer shock wave: an accommodating cavity is formed between the connecting pipe 1 and the connecting body 5, and air is automatically collected through the special shape in the pipeline according to the fluid mechanics principle to form an air cavity; when water is normally supplied, due to the arrangement of the connecting body 5, a vortex is formed near the channel 4, the accommodating cavity forms negative pressure, and the gravity of bubbles in the water is smaller than that of the water and is collected into the accommodating cavity through the communication port, so that an air cavity is formed in the accommodating cavity;

when the water pump is suddenly stopped, the water hammer shock waves enter the accommodating cavity through the channel 4, an air cavity formed in the accommodating cavity is compressed, and the water hammer shock waves are absorbed for the first time and in time; thereby protecting equipment and pipelines; the problems of slow operation time and low equipment precision are also solved; compared with the existing water hammer impact device, the scheme does not need to be precise in the aspect of using equipment, so that the fund is saved.

The principle of secondary absorption of water hammer shock waves; opening the flow valve 3, filling water in the connecting pipe 1 into the inner container assembly, and closing the flow valve 3 when the inner container body 14 extends to a preset value of the liquid level assembly; according to the water pressure value in the main water pipe, an air inlet valve 11 is opened, air is filled into the tank body 9 through an air inlet pipe 10, the air pressure in the tank body 9 is measured to be equal to the water pressure value through a load cell, and the air inlet valve 11 is closed.

Along with the primary absorption water hammer shock wave, the flow valve 3 is opened, the air pressure in the tank body 9 is larger than the water pressure in the main water pipe, the water in the expandable liner is injected into the main water pipe by the air pressure in the tank body 9 and impacts with the high-pressure water hammer wave oscillating back and forth to buffer the impact force of the high-pressure water hammer wave, the water hammer wave pressure is gradually reduced after the high-pressure water hammer wave is buffered for several times, and the pipeline is protected again.

The pipeline is safer by absorbing the water hammer shock waves twice, so that the invention has wide application.

It should be noted that the electrical equipment on the water hammer eliminating device can be connected with a controller, a PLC control system or a DCS system for controlling and matching use.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.