Welding assembly device for plate type heat exchange unit header

Abstract

The invention is applicable to the technical field of plate type heat exchanger unit header welding, and particularly relates to a welding assembly device for a plate type heat exchanger unit header, which comprises a working base, the two sides of the surface of the working base are connected with mounting seats, and the side surfaces of the mounting seats are provided with first hydraulic push rods; and one end of the first hydraulic push rod is connected with a supporting vertical plate. By arranging the upper arc-shaped clamping plate, the first mounting bracket, the pressurizing movable rod, the sealing sleeve, the connecting column, a groove, a limiting bulge, a hydraulic pump, an oil pipeline, a second mounting bracket, a second pressure sensor and a pressure measuring rod, the problem of non-uniform pressure in the header workpiece assembling process can be effectively solved. The pressure borne by the upper arc-shaped clamping plate and the lower arc-shaped clamping plate is uniform by measuring and adjusting the pressure in real time, and therefore it is guaranteed that the pressure of the paired end faces of the two header workpieces is consistent. Due to the pressure uniformity, the welding quality is remarkably improved, welding defects such as air holes and inclusions are reduced, and then the strength and reliability of a welding joint are improved.

Description

Technical Field

[0001] The invention relates to the technical field of plate type heat exchanger unit header welding, in particular to a welding assembly device for a plate type heat exchanger unit header. Background Art

[0002] The header of a plate heat exchanger is a key device for efficient heat exchange, which is mainly used for heat exchange and temperature control in industrial production. The header is an important component of the plate heat exchanger unit, usually composed of multiple metal plates welded together to achieve effective fluid exchange and heat transfer. In the production process of the header, the pairing and welding process are the key links that determine the performance of the final product. High-precision pairing not only affects the sealing and strength of the header, but is also directly related to its heat exchange effect and service life.

[0003] In the prior art, the assembly process of the header workpieces usually relies on mechanical fixtures and hydraulic systems. Although these technical means ensure the fixation and docking of the header workpieces to a certain extent, in actual applications, there is often a problem of uneven pressure distribution. Due to the limitations of the fixture structure and the hydraulic system, the pressure on the end faces of the workpiece assembly in different areas may vary greatly. This uneven pressure phenomenon can lead to problems such as poor contact and weld defects during welding, seriously affecting the welding quality and process accuracy.

[0004] In the prior art, although there are measures to monitor pressure changes through pressure sensors, it is usually difficult to effectively adjust the pressure of different areas of the end faces of the assembly in real time. The existing system can often only control the overall pressure, and it is difficult to accurately adjust the local pressure, which affects the strength and reliability of the final welded joint. In addition, due to uneven pressure, it may also cause the workpiece to be misaligned or deformed, thereby increasing the frequency of rework and correction, extending the production cycle and increasing production costs. Therefore, a new technology that can solve the problem of uneven pressure is urgently needed to improve welding quality and production efficiency. Summary of the invention

[0005] The purpose of the embodiments of the present invention is to provide a welding assembly device for a plate-type heat exchanger assembly header, aiming to solve the technical problems mentioned in the background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A welding assembly device for a plate-type heat exchanger assembly header, comprising a working base, both sides of the working base surface are connected to mounting seats, and a first hydraulic push rod is installed on the side of the mounting seat, and one end of the first hydraulic push rod is connected to a supporting vertical plate; The surface of the supporting vertical plate is provided with an arc-shaped groove, and the interior of the arc-shaped groove is movably connected with a lower arc-shaped clamping plate, a plurality of second mounting brackets are provided on the side of the supporting vertical plate, and a second pressure sensor is installed on the surface of the second mounting bracket, and a plurality of pressure measuring rods are connected to the side of the lower arc-shaped clamping plate; The surface of the support vertical plate is connected to a support column, and one end of the support column is connected to a support top seat, a mounting groove is provided on the side of the support top seat, and a second hydraulic push rod is installed inside the mounting groove, a plurality of hydraulic pumps are installed on the surface of the support top seat, and an oil pipeline is connected to the outside of the hydraulic pump, an upper arc-shaped mounting plate is provided at one end of the second hydraulic push rod, and an upper arc-shaped clamping plate is movably connected inside the upper arc-shaped mounting plate, a plurality of pressurizing movable rods are connected to the side of the upper arc-shaped clamping plate, and a groove is provided at one end of the pressurizing movable rod; A plurality of first mounting brackets are connected to the surface of the upper arc-shaped mounting plate, and a first pressure sensor is installed on the side of the first mounting bracket close to the upper arc-shaped clamping plate, a sealing sleeve is connected to the surface of the first pressure sensor, and a connecting column is fixedly connected to one side inside the sealing sleeve, and a plurality of limiting protrusions are arranged on the surface of the connecting column.

[0007] Furthermore, one end of the oil pipeline away from the hydraulic pump is connected to the interior of the sealing sleeve, the pressurizing active rod is sealingly and slidingly connected to the interior of the sealing sleeve, and a sealing ring is provided between the sealing sleeve and the pressurizing active rod, one end of the connecting column is inserted into the interior of the groove, and the limiting protrusion is used to limit the position of the pressurizing active rod.

[0008] Furthermore, the upper arc-shaped clamping plate and the lower arc-shaped clamping plate are both made of rubber material or thermoplastic elastomer material.

[0009] Furthermore, iron blocks are provided on the surfaces of the upper arc-shaped clamping plate close to the first mounting bracket and the lower arc-shaped clamping plate close to the second mounting bracket, and electromagnet blocks are provided on the surfaces of the upper arc-shaped mounting plate close to the first mounting bracket and the arc-shaped groove close to the second mounting bracket, and the positions of the electromagnet blocks correspond to the positions of the iron blocks.

[0010] Furthermore, a first display panel is disposed on the surface of the first mounting bracket and the surface of the second mounting bracket.

[0011] Furthermore, the two support vertical plates are both slidably connected to the surface of the working base, a guide slider is installed on the surface of the support vertical plate, a guide groove is opened on the surface of the working base, and the support vertical plates are slidably connected to the surface of the working base through the cooperation of the guide slider and the guide groove.

[0012] Furthermore, movable sliding grooves are provided on the supporting vertical plate and the upper arc-shaped mounting plate, movable sliding blocks are installed on the outer sides of the lower arc-shaped clamping plate and the upper arc-shaped clamping plate, and the lower arc-shaped clamping plate and the upper arc-shaped clamping plate are respectively slidably connected to the supporting vertical plate and the upper arc-shaped mounting plate through the cooperation of the movable sliding blocks and the movable sliding grooves.

[0013] The present invention provides a welding assembly device for a plate-type heat exchanger assembly manifold, which can effectively solve the problem of uneven pressure during the assembly process of the manifold workpieces by arranging an upper arc-shaped clamping plate, a first mounting bracket, a pressurized movable rod, a sealing sleeve, a connecting column, a groove, a limit protrusion, a hydraulic pump, an oil pipeline, a second mounting bracket, a second pressure sensor and a pressure measuring rod. By measuring and adjusting the pressure in real time, the pressure on the upper and lower arc-shaped clamping plates is uniform, thereby ensuring that the pressure on the end faces of the two manifold workpieces is consistent. This pressure uniformity significantly improves the welding quality, reduces welding defects such as pores and inclusions, and thus improves the strength and reliability of the welded joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a structural schematic diagram of a welding assembly device for a plate-type heat exchanger assembly header.

[0015] Figure 2 The present invention is a front structural schematic diagram of a support top seat in a welding assembly device for a plate-type heat exchange unit header and various components mounted on the support top seat.

[0016] Figure 3 The present invention is a schematic diagram of the back structure of a support top seat in a welding assembly device for a plate-type heat exchange unit header and various components mounted on the support top seat.

[0017] Figure 4 The present invention is a front cross-sectional view of an oil pipeline, a sealing sleeve, a pressurizing active rod and a connecting column in a welding assembly device for a plate-type heat exchanger assembly header.

[0018] Figure 5 A welding assembly device for a plate-type heat exchanger assembly header Figure 1 Enlarged view of point A.

[0019] In the figure: 1. working base; 2. first hydraulic push rod; 3. mounting seat; 4. supporting plate; 5. supporting column; 6. supporting top seat; 7. hydraulic pump; 8. second hydraulic push rod; 9. upper arc-shaped mounting plate; 10. upper arc-shaped clamping plate; 11. lower arc-shaped clamping plate; 12. oil pipeline; 13. first mounting bracket; 14. first display panel; 15. mounting positioning column; 16. sealing sleeve; 17. pressurized movable rod; 18. first pressure sensor; 19. mounting groove; 20. second mounting bracket; 21. pressure measuring rod; 22. arc-shaped groove; 23. second pressure sensor; 24. connecting column; 25. groove. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0021] The specific implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0022] like Figure 1-Figure 3 As shown, an embodiment of the present invention provides a welding assembly device for a plate-type heat exchanger group header, including a working base 1, mounting seats 3 are connected to both sides of the surface of the working base 1, two supporting vertical plates 4 are slidably connected to the surface of the working base 1, guide sliders are installed on the surfaces of the supporting vertical plates 4, guide grooves are opened on the surface of the working base 1, and the supporting vertical plates 4 are slidably connected to the surface of the working base 1 through the cooperation of the guide sliders and the guide grooves.

[0023] A first hydraulic push rod 2 is installed on the side of the mounting seat 3, and one end of the first hydraulic push rod 2 is connected to a supporting vertical plate 4; An arc-shaped groove 22 is provided on the surface of the support plate 4, and the lower arc-shaped clamping plate 11 is movably connected inside the arc-shaped groove 22. A plurality of second mounting brackets 20 are provided on the side of the support plate 4, and a second pressure sensor 23 is installed on the surface of the second mounting bracket 20. A plurality of pressure measuring rods 21 are connected to the side of the lower arc-shaped clamping plate 11. The surface of the supporting plate 4 is connected to the supporting column 5, and one end of the supporting column 5 is connected to the supporting top seat 6. The side of the supporting top seat 6 is provided with a mounting groove 19, and the inside of the mounting groove 19 is installed with a second hydraulic push rod 8. The supporting top seat 6 is provided with an installation positioning column 15, and the installation positioning column 15 is used to reinforce the second hydraulic push rod.

[0024] A plurality of hydraulic pumps 7 are installed on the surface of the support top seat 6, and an oil pipeline 12 is connected to the outer side of the hydraulic pump 7, an upper arc-shaped mounting plate 9 is arranged at one end of the second hydraulic push rod 8, and an upper arc-shaped clamping plate 10 is movably connected inside the upper arc-shaped mounting plate 9, the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 11 are both made of rubber material or thermoplastic elastomer material, and the curvature of the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 11 are adapted to the junction box workpiece to be assembled and processed, by setting the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 11 to be rubber material or thermoplastic elastomer material, after the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 11 clamp the junction box workpiece, there is a large friction force between the junction box workpiece and the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 11, so that the two junction box workpieces can be stably assembled together.

[0025] Both the supporting vertical plate 4 and the upper arc-shaped mounting plate 9 are provided with movable sliding grooves, and movable sliding blocks are installed on the outer sides of the lower arc-shaped clamping plate 11 and the upper arc-shaped clamping plate 10, and the lower arc-shaped clamping plate 11 and the upper arc-shaped clamping plate 10 are respectively slidably connected to the supporting vertical plate 4 and the upper arc-shaped mounting plate 9 through the cooperation of the movable sliding blocks and the movable sliding grooves, and the length of the sliding grooves is between 0.5-1cm, that is, the upper arc-shaped clamping plate 10 or the lower arc-shaped clamping plate 11 will not produce a large sliding amplitude.

[0026] A plurality of pressurizing movable rods 17 are connected to the side of the upper arc-shaped clamping plate 10, and a groove 25 is formed at one end of the pressurizing movable rod 17; A plurality of first mounting brackets 13 are connected to the surface of the upper arc-shaped mounting plate 9, and a first pressure sensor 18 is installed on the side of the first mounting bracket 13 close to the upper arc-shaped clamping plate 10, a sealing sleeve 16 is connected to the surface of the first pressure sensor 18, and a connecting column 24 is fixedly connected to one side inside the sealing sleeve 16, and a plurality of limiting protrusions are arranged on the surface of the connecting column 24.

[0027] One end of the oil pipeline 12 away from the hydraulic pump 7 is connected to the interior of the sealing sleeve 16, the pressurizing active rod 17 is sealingly and slidably connected to the interior of the sealing sleeve 16, and a sealing ring is provided between the sealing sleeve 16 and the pressurizing active rod 17, one end of the connecting column 24 is inserted into the interior of the groove 25, and the limiting protrusion is used to limit the position of the pressurizing active rod 17.

[0028] In one embodiment of the present invention, during the process of assembling two header workpieces, the initial position is set as follows: the side of the upper arc-shaped clamping plate 10 presses one end of the pressurizing active rod 17 against the limiting protrusion of the connecting column 24, and the side of the lower arc-shaped clamping plate 11 with the pressure measuring rod 21 presses against the surface of the second pressure sensor 23. After the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 11 are moved to the initial position, the two header workpieces are placed on the two lower arc-shaped clamping plates 11 respectively, and then the two second hydraulic push rods 8 are opened, and the second hydraulic push rods 8 drive the upper arc-shaped mounting plate 9 to move downward, and clamp the header workpiece to the lower arc-shaped clamping plate 11, and then the two groups of first hydraulic push rods 2 are opened, and the two groups of first hydraulic push rods 2 drive the two supporting vertical plates 4 to move in a direction close to each other until the welding parts of the two header workpieces are successfully assembled.

[0029] After the two header workpieces are successfully assembled, due to the large friction between the header workpiece and the lower arc clamping plate 11 and the upper arc clamping plate 10, the lower arc clamping plate 11 and the upper arc clamping plate 10 will also be subjected to the pressure applied by the first hydraulic push rod 2. However, the technicians found in many practical operations that when the first hydraulic push rod 2 is set at the bottom of the clamp, the forces borne by different areas of the end faces of the two header workpieces are uneven, especially the bottom area is subjected to a large thrust. This uneven force phenomenon will lead to welding quality problems after splicing, such as insufficient welding strength, welding defects, etc., which is very unfavorable to the subsequent welding process.

[0030] In response to the above problems, the present application proposes the following technical solutions: after the two coupling workpieces are paired, the pressurizing active rod 17 will feed back the pressure borne by the upper arc-shaped clamping plate 10 (derived from the pressure borne by the end face of the coupling workpiece pair corresponding to the upper arc-shaped clamping plate 10) to the sealing sleeve 16, so that the first pressure sensor 18 can measure the pressure borne by the sealing sleeve 16, and the lower arc-shaped clamping plate 11 feeds back the pressure borne by the upper arc-shaped clamping plate 10 to the pressure measuring rod 21, so that the second pressure sensor 23 can measure the pressure borne by the pressure measuring rod 21, thereby clearly knowing the pressure values ​​borne by different areas of the end face of the coupling workpiece pair.

[0031] In the present application, since the first hydraulic push rod 2 is arranged at the bottom, the pressure value measured by the first pressure sensor 18 is usually less than the pressure value measured by the second pressure sensor 23. In order to make the pressures on the upper and lower areas of the end faces of the two manifold workpiece groups consistent, hydraulic oil of appropriate pressure can be injected into different oil pipelines 12 through the hydraulic pump 7, thereby pushing the pressurizing active rod 17 to move inside the sealing sleeve 16. Since one end of the pressurizing active rod 17 is against the side of the upper arc-shaped clamping plate 10, additional pressure will be applied to the upper arc-shaped clamping plate 10, and the good friction between the upper arc-shaped clamping plate 10 and the manifold workpiece will enable it to provide supplementary pressure for the areas where the end faces of the two manifold workpiece groups lack pressure.

[0032] The most critical thing is that since the upper arc clamping plate 10 and the lower arc clamping plate 11 are independently arranged up and down, when the pressure on the upper arc clamping plate 10 is locally increased, it will not affect the lower arc clamping plate 11, so that the pressure on different end surface areas of the two junction box workpiece groups can be ensured to be the same as much as possible.

[0033] It should be noted that the technical solution of the present application is for the case where the first hydraulic push rod 2 is arranged at the bottom. When the position of the first hydraulic push rod 2 changes, the upper arc clamping plate 10 and the lower arc clamping plate 11 and their related pressure measuring and pressurizing structures should be adjusted accordingly. At the same time, the number of the first mounting bracket 13 and the second mounting bracket 20 can be adjusted according to the actual accuracy requirements.

[0034] The above technical solution can effectively solve the problem of uneven pressure during the assembly of header workpieces. By measuring and adjusting the pressure in real time, the pressure on the upper and lower arc-shaped clamping plates is uniform, thereby ensuring that the pressure on the end faces of the two header workpieces is consistent. This pressure uniformity significantly improves the welding quality and reduces welding defects such as pores and inclusions, thereby improving the strength and reliability of the welded joint.

[0035] In addition, by optimizing the pressure distribution, the process accuracy is enhanced, the misalignment or deformation of the workpiece caused by poor assembly is avoided, and the accurate positioning and consistency of the workpiece are ensured. This improvement also improves production efficiency, reduces rework and correction operations, shortens production cycles, and reduces production costs, making the entire production process more efficient and economical.

[0036] In this embodiment, iron blocks are provided on the surface of the upper arc-shaped clamping plate 10 close to the first mounting bracket 13 and on the surface of the lower arc-shaped clamping plate 11 close to the second mounting bracket 20, and electromagnet blocks are provided on the surface of the upper arc-shaped mounting plate 9 close to the first mounting bracket 13 and on the surface of the arc-shaped groove 22 close to the second mounting bracket 20, and the position of the electromagnet block corresponds to the position of the iron block, so that each time the upper arc-shaped clamping plate 10 and the lower arc-shaped clamping plate 11 need to be placed in the initial position, it is only necessary to turn on the electromagnet block, and the iron block and the lower arc-shaped clamping plate 11 or the upper arc-shaped clamping plate 10 can be driven to move to the preset initial position through the adsorption force.

[0037] In this embodiment, the surfaces of the first mounting bracket 13 and the second mounting bracket 20 are both provided with a first display panel 14, through which the staff can more clearly understand the pressure bearing conditions of the two header workpiece groups on different end surface areas.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A welding assembly device for a plate-type heat exchanger assembly header, comprising a working base (1), characterized in that: Both sides of the surface of the working base (1) are connected to mounting seats (3), and a first hydraulic push rod (2) is installed on the side of the mounting seat (3), and one end of the first hydraulic push rod (2) is connected to a supporting vertical plate (4); The surface of the supporting vertical plate (4) is provided with an arc-shaped groove (22), and the interior of the arc-shaped groove (22) is movably connected to a lower arc-shaped clamping plate (11), a plurality of second mounting brackets (20) are provided on the side of the supporting vertical plate (4), and a second pressure sensor (23) is mounted on the surface of the second mounting bracket (20), and a plurality of pressure measuring rods (21) are connected to the side of the lower arc-shaped clamping plate (11); The surface of the support plate (4) is connected to a support column (5), and one end of the support column (5) is connected to a support top seat (6); a mounting groove (19) is provided on the side of the support top seat (6), and a second hydraulic push rod (8) is installed inside the mounting groove (19); a plurality of hydraulic pumps (7) are installed on the surface of the support top seat (6), and an oil pipeline (12) is connected to the outside of the hydraulic pump (7); an upper arc-shaped mounting plate (9) is provided at one end of the second hydraulic push rod (8), and an upper arc-shaped clamping plate (10) is movably connected inside the upper arc-shaped mounting plate (9); a plurality of pressurizing movable rods (17) are connected to the side of the upper arc-shaped clamping plate (10), and a groove (25) is provided at one end of the pressurizing movable rod (17); A plurality of first mounting brackets (13) are connected to the surface of the upper arc-shaped mounting plate (9), and a first pressure sensor (18) is installed on the side of the first mounting bracket (13) close to the upper arc-shaped clamping plate (10), a sealing sleeve (16) is connected to the surface of the first pressure sensor (18), and a connecting column (24) is fixedly connected to one side of the sealing sleeve (16), and a plurality of limiting protrusions are arranged on the surface of the connecting column (24).

2. A welding assembly device for a plate-type heat exchanger assembly header according to claim 1, characterized in that: One end of the oil delivery pipeline (12) away from the hydraulic pump (7) is connected to the interior of the sealing sleeve (16); the pressurizing movable rod (17) is sealingly slidably connected to the interior of the sealing sleeve (16); a sealing ring is provided between the sealing sleeve (16) and the pressurizing movable rod (17); one end of the connecting column (24) is inserted into the interior of the groove (25); and the limiting protrusion is used to limit the position of the pressurizing movable rod (17).

3. A welding assembly device for a plate-type heat exchanger assembly header according to claim 1, characterized in that: The upper arc-shaped clamping plate (10) and the lower arc-shaped clamping plate (11) are both made of rubber material or thermoplastic elastomer material.

4. A welding assembly device for a plate-type heat exchanger assembly header according to claim 3, characterized in that: An iron block is provided on the surface of the upper arc-shaped clamping plate (10) close to the first mounting bracket (13) and on the surface of the lower arc-shaped clamping plate (11) close to the second mounting bracket (20), and an electromagnet block is provided on the surface of the upper arc-shaped mounting plate (9) close to the first mounting bracket (13) and on the surface of the arc-shaped groove (22) close to the second mounting bracket (20), and the position of the electromagnet block corresponds to the position of the iron block.

5. A welding assembly device for a plate-type heat exchanger assembly header according to claim 1, characterized in that: A first display panel (14) is provided on the surface of the first mounting bracket (13) and the second mounting bracket (20).

6. A welding assembly device for a plate-type heat exchanger assembly header according to claim 1, characterized in that: The two support uprights (4) are both slidably connected to the surface of the working base (1); a guide slider is installed on the surface of the support uprights (4); a guide slot is provided on the surface of the working base (1); and the support uprights (4) are slidably connected to the surface of the working base (1) through the cooperation of the guide slider and the guide slot.

7. A welding assembly device for a plate-type heat exchanger assembly header according to claim 1, characterized in that: The supporting vertical plate (4) and the upper arc-shaped mounting plate (9) are both provided with movable sliding grooves, and the outer sides of the lower arc-shaped clamping plate (11) and the upper arc-shaped clamping plate (10) are both provided with movable sliding blocks, and the lower arc-shaped clamping plate (11) and the upper arc-shaped clamping plate (10) are respectively slidably connected to the supporting vertical plate (4) and the upper arc-shaped mounting plate (9) through the cooperation of the movable sliding blocks and the movable sliding grooves.

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