阅读说明：本技术 一种膜式壁管排表面喷焊层合金的感应加热装置及工艺 (Induction heating device and process for spraying welding layer alloy on surface of membrane type wall tube bank ) 是由 何跃 蒋崇辅 于 2019-10-21 设计创作，主要内容包括：本发明公开了一种膜式壁管排表面喷焊层合金的感应加热装置及工艺,包括管排行走支撑台架,能够支承膜式壁管排；管排行走支撑体,设置于所述管排行走支撑台架上,能够驱动所述膜式壁管排在所述管排行走支撑台架上行进；以及管排加热感应线圈,设置于所述管排行走支撑台架的顶部上方；保温罩,能够拆卸地覆盖于所述膜式壁管排之上。相比于传统技术,本发明能够使表面涂层合金与膜式壁管排基体达到冶金结合,使整个膜式壁管排受热更加均匀,提高生产效率,适合大规模生产。(The invention discloses an induction heating device and process for spraying and welding layer alloy on the surface of a membrane type wall tube bank, which comprises a tube bank walking support rack, a membrane type wall tube bank supporting rack and a membrane type wall tube bank supporting rack, wherein the membrane type wall tube bank supporting rack is arranged on the tube bank walking support rack; the pipe row walking support body is arranged on the pipe row walking support rack and can drive the membrane type wall pipe row to move on the pipe row walking support rack; the tube bank heating induction coil is arranged above the top of the tube bank walking support rack; and the heat insulation cover can be detachably covered on the membrane wall tube bank. Compared with the prior art, the invention can enable the surface coating alloy and the membrane wall tube bank matrix to achieve metallurgical bonding, so that the whole membrane wall tube bank is heated more uniformly, the production efficiency is improved, and the membrane wall tube bank is suitable for large-scale production.)

1. The utility model provides an induction heating device of membrane wall bank of tubes surface spray welding layer alloy which characterized in that includes:

the pipe row walking support rack can support the membrane type wall pipe row;

the pipe row walking support body is arranged on the pipe row walking support rack and can drive the membrane type wall pipe row to move on the pipe row walking support rack; and

the tube bank heating induction coil is arranged above the top of the tube bank walking support rack;

and the heat insulation cover can be detachably covered on the membrane wall tube bank.

2. The apparatus of claim 1, wherein the membrane wall tube array surface spray-welded layer alloy comprises: the device also comprises an induction heating power supply, which is arranged beside the tube bank walking support rack and can provide voltage for the tube bank heating induction coil.

3. The apparatus of claim 1, wherein the membrane wall tube array surface spray-welded layer alloy comprises: the pipe row walking support platform is characterized by further comprising rolling bearings, and the two side walls of the pipe row walking support platform are connected through the rolling bearings.

4. The apparatus of claim 3, wherein the alloy layer is sprayed on the surface of the membrane wall tube bank by an induction heating method, and the induction heating method comprises the following steps: the tube bank walking support body comprises a conveying belt and a duplicate gear, wherein the duplicate gear is arranged at one end of the rolling bearing, and the conveying belt is connected with the duplicate gear in a matched mode.

5. The apparatus of claim 1, wherein the membrane wall tube array surface spray-welded layer alloy comprises: the heat preservation cover adopts a cuboid structure.

6. The apparatus of claim 5, wherein the membrane wall tube array surface spray-welded layer alloy comprises: the length of the heat-insulating cover is 2000-20000mm, the width of the heat-insulating cover is 30-200mm, and the distance between the top of the inner cavity and the upper surface of the membrane wall tube row is 150-1000 mm.

7. The apparatus of claim 1 or 6, wherein the weld layer alloy is applied to the surface of the tube bank: the tube bank heating induction coils are more than two, and the distance between every two adjacent tube bank heating induction coils is 200-1000 mm.

8. The process for manufacturing an induction heating unit for spray welding of layer alloy on the surface of a membrane wall tube bank as claimed in claim 1, comprising the steps of:

placing the membrane type wall tube row on the tube row walking support rack, and starting the tube row walking support body and the tube row heating induction coil;

when the temperature T of the membrane wall tube row meets the following conditions: when the melting point of the alloy of the spray welding layer on the surface of the membrane wall tube bank is not more than T and not more than the melting point of the alloy of the spray welding layer on the surface of the membrane wall tube bank plus 100 ℃, closing the tube bank walking support body and the tube bank heating induction coil;

and covering the heat-preservation cover on the membrane wall pipe row until the temperature state of the membrane wall pipe row is cooled to the room temperature state.

9. The process of claim 8, wherein the step of placing the membrane wall tube array on the tube array walking support rack and activating the tube array walking support and the tube array heating induction coil comprises the steps of:

placing the membrane wall tube bank on the tube bank walking support rack, if the number of the tube bank heating induction coils is set to be one, preheating the membrane wall tube bank, and then starting the tube bank walking support body and the tube bank heating induction coils; and if the number of the tube bank heating induction coils is more than two, directly starting the tube bank walking support body and the tube bank heating induction coils.

Technical Field

The invention relates to the field of heat extraction treatment of membrane wall tubes, in particular to an induction heating device and process for spraying and welding layer alloy on the surface of a membrane wall tube bank.

Background

Along with the rapid development of urbanization and the continuous expansion of cities and towns, the production of industrial garbage and household garbage also increases rapidly, the treatment and disposal of the industrial garbage and the household garbage become important problems related to the sustainable development of urban civilization, and the garbage incineration power generation technology can realize the harmlessness, volume reduction, stabilization and reclamation of the garbage to the maximum extent, promote the healthy and civilized development of the urbanization, and therefore the garbage incineration power generation technology is more and more spotlighted. In the practical engineering application of waste incineration power generation, the membrane wall tube bank is an important heat exchange component (heat exchanger) and the heating surface of the membrane wall tube bank is often corroded by high-temperature chlorine-sulfur-containing atmosphere and molten salt thereof during operation, so a high-temperature corrosion-resistant coating is often adopted on the heating surface of the membrane wall tube bank to prolong the service life of the membrane wall tube bank, but the surface coating of the existing membrane wall tube bank is easily heated unevenly during production, quality problems are caused, correspondingly, the production efficiency is reduced, and the industrial production requirements cannot be met.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide an induction heating apparatus and process for spraying a solder layer alloy on a surface of a membrane-type wall tube bundle, which can achieve metallurgical bonding between a surface coating alloy and a membrane-type wall tube bundle substrate, so that the whole membrane-type wall tube bundle is heated more uniformly, the production efficiency is improved, and the apparatus and process are suitable for mass production.

In order to make up for the defects of the prior art, the embodiment of the invention adopts the following technical scheme:

an induction heating apparatus for spray welding of a layer alloy on the surface of a membrane wall tube bank, comprising:

the pipe row walking support rack can support the membrane type wall pipe row;

the pipe row walking support body is arranged on the pipe row walking support rack and can drive the membrane type wall pipe row to move on the pipe row walking support rack; and

the tube bank heating induction coil is arranged above the top of the tube bank walking support rack;

and the heat insulation cover can be detachably covered on the membrane wall tube bank.

Further, this technical scheme still includes the induction heating power, set up in the side of bank of tubes walking supporting rack can for bank of tubes heats induction coil and provides voltage.

Furthermore, this technical scheme still includes antifriction bearing, the both sides limit wall of bank of tubes walking support rack is connected through antifriction bearing.

Further, the tube bank walking support body comprises a conveying belt and a duplicate gear, wherein the duplicate gear is arranged at one end of the rolling bearing, and the conveying belt is connected with the duplicate gear in a matched mode.

Further, the heat preservation cover adopts a cuboid structure.

Further, the length of the heat-preservation cover is 2000-.

Furthermore, the number of the tube row heating induction coils is more than two, and the distance between the adjacent tube row heating induction coils is 200-1000 mm.

The process of the induction heating device for spraying the alloy on the surface of the membrane wall tube bank comprises the following steps:

placing the membrane type wall tube row on the tube row walking support rack, and starting the tube row walking support body and the tube row heating induction coil;

when the temperature T of the membrane wall tube row meets the following conditions: when the melting point of the alloy of the spray welding layer on the surface of the membrane wall tube bank is not more than T and not more than the melting point of the alloy of the spray welding layer on the surface of the membrane wall tube bank plus 100 ℃, closing the tube bank walking support body and the tube bank heating induction coil;

and covering the heat-preservation cover on the membrane wall pipe row until the temperature state of the membrane wall pipe row is cooled to the room temperature state.

Further, the step of placing the membrane wall tube bank on the tube bank walking support rack and starting the tube bank walking support body and the tube bank heating induction coil comprises the following steps:

placing the membrane wall tube bank on the tube bank walking support rack, if the number of the tube bank heating induction coils is set to be one, preheating the membrane wall tube bank, and then starting the tube bank walking support body and the tube bank heating induction coils; and if the number of the tube bank heating induction coils is more than two, directly starting the tube bank walking support body and the tube bank heating induction coils.

One or more technical schemes provided in the embodiment of the invention have at least the following beneficial effects: the pipe row walking support rack is used for supporting the membrane type wall pipe row and providing a good production environment for the membrane type wall pipe row, the membrane type wall pipe row is driven to advance on the pipe row walking support rack through the pipe row walking support body, in the process, the membrane type wall pipe row is heated by utilizing induction between the pipe row heating induction coil and the membrane type wall pipe row, compared with a mode of directly adopting a heat source for heating in the traditional technology, the induction heating is supported by matching with the membrane type wall pipe row, the surface coating of the membrane type wall pipe row is more easily heated properly, and therefore the coating and the matrix of the membrane type wall pipe row are metallurgically combined; and after induction heating, a heat preservation cover is arranged, so that heat can be maintained for a short time, metallurgical bonding between the surface coating alloy and the membrane wall tube row substrate at the temperature can be promoted, and the production quality of the membrane wall tube row is improved. Therefore, the invention can enable the surface coating alloy and the membrane wall tube bank matrix to achieve metallurgical bonding, so that the whole membrane wall tube bank is heated more uniformly, the production efficiency is improved, and the invention is suitable for large-scale production.

Drawings

The following description of the preferred embodiments of the present invention will be made in conjunction with the accompanying drawings.

FIG. 1 is a schematic structural diagram of an induction heating device for spraying a solder layer alloy on the surface of a membrane wall tube bank according to an embodiment of the present invention;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is a schematic process flow diagram of an induction heating apparatus for spraying a solder layer alloy on the surface of a membrane wall tube bank according to an embodiment of the invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It should be noted that, if not conflicted, the various features of the embodiments of the invention may be combined with each other within the scope of protection of the invention. Additionally, while a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in an order different than in the flowcharts.

The embodiments of the present invention will be further explained with reference to the drawings.

Referring to fig. 1, an embodiment of the present invention provides an induction heating apparatus for spraying a solder layer alloy on a surface of a membrane wall tube bank, including:

a tube bundle travel support stand 100 capable of supporting a membrane wall tube bundle 110;

a tube row traveling support 120 provided on the tube row traveling support frame 100 and capable of driving the membrane wall tube row 110 to travel on the tube row traveling support frame 100; and

a bank heating induction coil 130 disposed above the top of the bank walking support stage 100;

and a heat-insulating cover 140 detachably covering the membrane-type wall tube row 110.

In the embodiment, the tube bank walking support rack 100 is used for supporting the membrane wall tube bank 110, so as to provide a good production environment for the membrane wall tube bank 110, and the tube bank walking support 120 drives the membrane wall tube bank 110 to travel on the tube bank walking support rack 100, in the process, the membrane wall tube bank 110 is heated by using induction between the tube bank heating induction coil 130 and the membrane wall tube bank 110, compared with a mode of directly heating by using a heat source in the conventional technology, the induction heating depends on the matching between the induction heating induction coil and the membrane wall tube bank 110, so that the surface coating of the membrane wall tube bank 110 is more easily heated properly, and the coating and the matrix of the membrane wall tube bank 110 are metallurgically bonded; further, the heat insulating cover 140 is provided after the induction heating, so that heat can be maintained for a short time, and metallurgical bonding between the surface coating alloy and the matrix of the membrane wall tube bundle 110 at that temperature can be promoted, thereby improving the production quality of the membrane wall tube bundle 110.

Therefore, the invention can enable the surface coating alloy to achieve metallurgical bonding with the matrix of the membrane wall tube bank 110, so that the whole membrane wall tube bank 110 is heated more uniformly, the production efficiency is improved, and the invention is suitable for large-scale production.

Further, referring to fig. 1, another embodiment of the present invention further provides an induction heating apparatus for spraying a solder layer alloy on a surface of a membrane wall tube bank, wherein the apparatus further comprises an induction heating power source 150, which is disposed beside the tube bank walking support stand 100 and is capable of providing a voltage for the tube bank heating induction coil 130.

In this embodiment, the induction heating power source 150 can directly adopt commercial power, a storage battery power source, etc., and the induction heating power source 150 is disposed at the side of the tube bank walking support rack 100, which is beneficial to: the compact and small of being convenient for realize whole heating device, area is littleer, and to the staff, it is easier to control, troubleshooting to shortened the electric energy transmission distance, be favorable to reducing the power consumption.

Further, referring to fig. 1 and 2, another embodiment of the present invention further provides an induction heating device for spraying a solder layer alloy on a surface of a membrane wall tube bank, wherein the induction heating device further comprises rolling bearings 160, and two side walls of the tube bank walking support stand 100 are connected through the rolling bearings 160. In this embodiment, the number of the rolling bearings 160 is not limited, and a plurality of rolling bearings may be provided and connected to both side walls of the tube bank walking support stand 100; the tube bank walking support stand 100 can be fixed through the rolling bearing 160, and a good fixing and connecting effect is achieved.

Further, referring to fig. 2, another embodiment of the present invention further provides an induction heating apparatus for spraying a solder alloy on a surface of a membrane wall tube bank, wherein the tube bank walking support 120 includes a transmission belt 1201 and a dual gear 1202, the dual gear 1202 is disposed on one end of the rolling bearing 160, and the transmission belt 1201 is connected to the dual gear 1202 in a matching manner.

In this embodiment, the dual gear 1202 rotates under the conveyor belt 1201, and compared with a single-shaft gear, it can provide a more stable driving force to drive the rolling bearing 160 connected thereto to rotate, and since the rolling bearing 160 is connected to the tube bank walking support rack 100 and the membrane wall tube bank 110 is disposed on the tube bank walking support rack 100, the rotation of the rolling bearing 160 will drive the membrane wall tube bank 110 to perform transmission, so as to perform a good transmission function; preferably, the conveyor belt 1201 and the rolling bearing 160 are perpendicular to each other, so that the driving effect is better.

Further, another embodiment of the present invention further provides an induction heating device for spraying a solder layer alloy on a surface of a membrane wall tube bank, wherein the heat-insulating cover 140 has a rectangular parallelepiped structure. In the present embodiment, the thermal insulation cover 140 provided in this way can be more favorably matched with the membrane wall tube bundle 110 and the tube bundle traveling support frame 100 in terms of industrialization, and is convenient to manufacture.

Further, another embodiment of the present invention further provides an induction heating device for spraying a solder layer alloy on the surface of the membrane wall tube array, wherein the length of the heat-insulating cover 140 is 2000-. In the embodiment, the above parameters are obtained by a lot of experiments and summaries of the inventor, the cost of the heat-insulating cover 140 arranged in the range is relatively low, the distance from the membrane wall tube row 110 is relatively moderate, and the situation that the heat-insulating effect is reduced due to the too far distance does not occur.

Further, another embodiment of the present invention further provides an induction heating device for spraying a solder layer alloy on a surface of a membrane wall tube array, wherein more than two tube array heating induction coils 130 are provided, and a distance between adjacent tube array heating induction coils 130 is 200-1000 mm. In this embodiment, too close distance between the tube bundle heating induction coils 130 may cause mutual interference between the coils, and too far distance may cause the membrane wall tube bundle 110 not to be heated in a section of transmission, which may affect the production effect.

Referring to fig. 3, another embodiment of the present invention further provides a process for manufacturing an induction heating device of a membrane wall tube bundle surface spray welding layer alloy, comprising the following steps:

s100, placing the membrane wall tube row 110 on the tube row walking support stand 100, and starting the tube row walking support 120 and the tube row heating induction coil 130;

s200, when the temperature T of the membrane wall pipe row 110 meets the following conditions: when the melting point of the alloy of the spray welding layer on the surface of the membrane wall tube row 110 is not less than T and not more than the melting point of the alloy of the spray welding layer on the surface of the membrane wall tube row 110 plus 100 ℃, closing the tube row walking support body 120 and the tube row heating induction coil 130;

s300, covering the heat-insulating cover 140 on the membrane-type wall tube row 110 until the temperature state of the membrane-type wall tube row 110 is cooled to the room temperature state.

In this embodiment, when the heating temperature is near the melting point of the alloy of the spray welding layer on the surface of the membrane wall tube row 110 and at least reaches the melting point, the state change of the coating on the surface of the membrane wall tube row 110 starts, and the coating is more easily metallurgically matched with the matrix of the membrane wall tube row 110 under the condition, so as to produce the membrane wall tube row 110 meeting the requirement, and the physical state of the membrane wall tube row 110 can be further stabilized by the heat-insulating cover 140 until the membrane wall tube row is cooled to room temperature, so that a complete membrane wall tube row 110 product can be obtained, wherein the room temperature refers to 25 ℃ at normal temperature; the tube bank walking support 120 and the tube bank heating induction coil 130 are started to maintain the production process, and on the contrary, the tube bank walking support 120 and the tube bank heating induction coil 130 are closed to pause the production process, so that the control is more convenient.

Specifically, the working manner of this embodiment may be, in addition to the above manner:

1. two tube bank heating induction coils 130 are arranged, the membrane wall tube bank 110 is firstly heated by a first induction coil, the heating temperature is more than or equal to 300 ℃ and less than or equal to 500 ℃, then more than 500 ℃ and less than or equal to 700 ℃, and more than 700 ℃ and less than or equal to 900 ℃, after the membrane wall tube bank 110 is heated by the first induction coil, the membrane wall tube bank passes through a middle non-induction coil section (namely a heat preservation section), and then is heated by a second induction coil until the melting point temperature of the alloy of the spray welding layer is within the range of the melting point temperature of the alloy of the spray welding layer plus 100 ℃, and after coming out of the second induction coil, the membrane wall tube bank 110 enters a heat preservation cover 140 for heat preservation and is slowly cooled to the room temperature state.

2. Arranging three tube bank heating induction coils 130, wherein the membrane wall tube bank 110 is firstly heated by a first induction coil, the heating temperature is more than or equal to 300 ℃ and less than or equal to 500 ℃, then more than 500 ℃ and less than or equal to 700 ℃, and more than 700 ℃ and less than or equal to 900 ℃, after the membrane wall tube bank 110 is heated by the first induction coil, the membrane wall tube bank passes through a middle non-induction coil section (namely a heat preservation section), then is heated by a second induction coil to the temperature of more than 900 ℃ and less than or equal to T and the melting point of the alloy sprayed on the surface of the membrane wall tube bank 110, passes through the middle heat preservation section after coming out of the second induction coil, is heated by a third induction coil to the temperature of the melting point of the alloy sprayed on the surface and the temperature of the alloy sprayed on the surface and the range of +100 ℃, and after coming out of the third induction coil, the membrane wall tube bank 110 enters a heat preservation cover 140 for heat preservation and;

3. arranging four tube bank heating induction coils 130, heating the membrane wall tube bank 110 to a temperature T of more than or equal to 300 ℃ and less than or equal to 500 ℃ by a first induction coil, then passing through a middle heat preservation section, heating the membrane wall tube bank to a temperature T of more than or equal to 500 ℃ by a second induction coil, then passing through the middle heat preservation section, heating the membrane wall tube bank to a temperature T of more than 900 ℃ and less than or equal to the melting point of the alloy sprayed on the surface of the membrane wall tube bank 110 by a third induction coil, finally heating the membrane wall tube bank to a temperature range of the melting point of the alloy sprayed on the surface to the melting point of the alloy sprayed on the surface plus 100 ℃ by a fourth induction coil, and after coming out of the fourth induction coil, entering a heat preservation cover 140 for heat preservation and slowly cooling the membrane wall tube bank to a;

4. five tube bank heating induction coils 130 are arranged, the membrane wall tube bank 110 is firstly heated by the first induction coil to the temperature T of more than or equal to 300 ℃ and less than or equal to 500 ℃, then the mixture passes through the middle heat preservation section and is heated to the temperature of more than 500 ℃ and less than or equal to 700 ℃ by a second induction coil, then, the temperature is heated to 700 ℃ and T is less than or equal to 900 ℃ by a third induction coil through a middle heat preservation section, then, the alloy is heated to the melting point of the alloy sprayed on the surface of the membrane wall tube bank 110 at the temperature of 900 ℃ to T by a fourth induction coil through the middle heat preservation section, and after the alloy is discharged from the fourth induction coil, through the middle heat preservation section, the alloy is heated to the range from the melting point temperature of the alloy of the spray welding layer to the melting point temperature of the alloy of the spray welding layer plus 100 ℃ by a fifth induction coil, and after coming out from the fifth induction coil, the membrane wall tube array 110 enters the heat-preserving cover 140 for heat preservation and is slowly cooled to the room temperature.

From the above working methods, the number of the tube bank heating induction coils 130 can be set by the worker at will as long as the range of the melting point temperature condition of the alloy of the surface weld layer of the membrane wall tube bank 110 is finally satisfied, so that the available production methods are various and the production is more convenient.

Further, another embodiment of the present invention further provides a process of an induction heating device for spraying a solder alloy on a surface of a membrane wall tube bank, wherein in step S100, the membrane wall tube bank 110 is placed on the tube bank walking support stand 100, and the tube bank walking support 120 and the tube bank heating induction coil 130 are activated, including the following steps:

placing the membrane wall tube row 110 on the tube row walking support stand 100, if the number of the tube row heating induction coils 130 is set to one, preheating the membrane wall tube row 110, and then starting the tube row walking support 120 and the tube row heating induction coils 130; if the number of the tube bank heating induction coils 130 is set to be more than two, the tube bank walking supporter 120 and the tube bank heating induction coils 130 are directly started.

In the embodiment, the preheating state of the film-type wall tube bank 110 is correspondingly controlled by distinguishing the different number of the tube bank heating induction coils 130, so that the production efficiency and the production quality can be improved; the preheating of the solder is a common technique in the art and will not be described herein.

While the preferred embodiments and basic principles of the present invention have been described in detail, it will be understood by those skilled in the art that the invention is not limited to the embodiments, but is intended to cover various modifications, equivalents and alternatives falling within the scope of the invention as claimed.