A high temperature resistant heat exchanger plate bundle welding equipment

Abstract

The present application relates to the field of heat exchanger welding technology, specifically a high-temperature heat exchanger plate bundle welding device, including: a base plate, a support frame, a positioning unit and a welding unit, a support frame is installed on the base plate, a positioning unit is installed on the support frame, and a welding unit is also installed on the base plate. The present application uses the four support rods in the support frame to cooperate with the positioning unit to fully limit the up and down, front and back, left and right positions of the heat exchanger plate bundle, effectively ensuring the position stability of the plate bundle during welding, and at the same time, the plate bundle is switched between the vertical state and the horizontal state through the rotatable support frame to cooperate with the upper welding mechanism and the lower welding mechanism in the welding unit to complete the comprehensive welding of the plate bundle. After the plate bundle state is switched, the height of the upper welding mechanism and the lower welding mechanism can be adaptively adjusted synchronously and timely with the change of the state of the support frame, without spending additional time on adjustment, effectively improving the continuity of the entire welding process.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchanger welding, and in particular to a high temperature resistant heat exchanger plate bundle welding device. Background Art

[0002] High temperature heat exchangers are devices used to transfer heat from hot fluid to cold fluid to meet the specified process requirements. They are an industrial application of convective heat transfer and heat conduction. High temperature heat exchangers mainly include shell and tube heat exchangers and plate heat exchangers. Among them, plate heat exchangers are a kind of high-efficiency heat exchangers composed of a series of metal heat exchange plates with a certain corrugated shape. Multiple metal heat exchange plates (hereinafter referred to as heat exchange plates) form a plate bundle, and multiple thin rectangular channels are formed in the plate bundle, and heat exchange is carried out through the plate bundle.

[0003] In order to improve the heat transfer efficiency of the plate bundle, welding is often used to connect the heat exchange plates in the plate bundle. At present, when welding the plate bundle, the plate bundle is mostly placed on the workbench first, and then the plate bundle is positioned and clamped by the positioning fixtures on both sides, and then the end face of the plate bundle is welded from the upper side by a welding gun. After the upper side welding is completed, the plate bundle needs to be removed from the positioning fixture, and the position of the plate bundle is adjusted so that the other unwelded end face of the plate bundle is exposed upward, and then the plate bundle is clamped by the positioning fixture again, and the above operation is repeated until the four end faces of the plate bundle are welded.

[0004] When welding in the above manner, it is necessary to adjust the state of the plate bundle multiple times and repeatedly adjust the positioning fixture. The operation steps are cumbersome and the operation efficiency is low. After welding the gaps between adjacent heat exchange plates in the plate bundle, the welds formed are often uneven. When the welded end face of the plate bundle is placed on a workbench to weld the unwelded end face of the plate bundle, the uneven welds can easily affect the fixing effect of the positioning fixture on the entire plate bundle, resulting in the inability of the positioning fixture to fit tightly with the plate bundle, thereby reducing the stability of the plate bundle during welding, and further affecting the accuracy of welding.

[0005] In order to solve the above technical problems, the present application provides a high temperature resistant heat exchanger plate bundle welding device. Summary of the invention

[0006] In order to achieve the above-mentioned purpose, the present application provides a high-temperature resistant heat exchanger plate bundle welding device, including: a base plate, a support frame, a positioning unit and a welding unit. The base plate is equipped with a support frame, and a positioning unit for positioning the plate bundle is installed on the support frame. The base plate is also equipped with a welding unit.

[0007] The support frame includes a fixed seat fixedly mounted on the base plate and a sliding seat slidably mounted on the base plate left and right, a sliding seat is slidably mounted on the sliding seat forward and backward, support plates are rotatably mounted on the fixed seat and the sliding seat, four support rods arranged in a matrix are installed between the two support plates, the middle part of the support rod is a hollow structure, and two U-shaped grooves arranged up and down and with openings facing forward are provided on the support plate corresponding to the sliding seat for supporting the support rods.

[0008] The positioning unit includes a pushing piece that is symmetrically installed inside the support rod for rotation. The left and right pushing pieces are connected by a connecting rod. Two groups of positioning pieces corresponding to the pushing pieces are installed on the circumferential side walls of the support rod. The positioning piece includes a plurality of positioning blocks evenly distributed along the circumference of the support rod. The positioning blocks are elastically slidably connected to the side walls of the support rod. The pushing piece is used to push the positioning block. A driving piece is installed between the support rod and the support plate on the fixed seat.

[0009] The welding unit includes an upper welding mechanism for welding the plate bundle from an upper side and a lower welding mechanism for welding the plate bundle from a lower side.

[0010] Preferably, both the fixed seat and the sliding seat are provided with vertical slide grooves, in which an L-shaped frame is elastically slidably installed up and down, the upper end of the vertical section of the L-shaped frame is a retractable structure up and down, and a rotating shaft connected to the center position of the support plate is rotatably installed in the middle of the upper end of the vertical section of the L-shaped frame, and a handle is installed on the rotating shaft.

[0011] Preferably, the upper welding mechanism includes an upper mounting plate installed on the base plate through an elastic telescopic rod, an upper sliding plate is installed on the lower end of the upper mounting plate for sliding back and forth, a plurality of No. 1 welding guns are installed on the lower end of the upper sliding plate, and four limit rods distributed in a matrix are also installed on the lower end of the upper sliding plate, and the No. 1 welding gun is located inside the rectangular area formed by the four limit rods.

[0012] Preferably, the lower welding mechanism includes a lower mounting plate connected to the right end of the horizontal section of the L-shaped frame on the fixed seat through a connecting plate, a lower sliding plate is mounted on the upper end of the lower mounting plate for forward and backward sliding movement, and a plurality of No. 2 welding guns are mounted on the lower sliding plate.

[0013] Preferably, the pushing member comprises a circular block rotatably mounted inside the support rod, a plurality of pushing blocks corresponding to the positioning blocks are evenly mounted on the circumferential side wall of the circular block, and one end of the pushing block away from the circular block is an arc structure.

[0014] Preferably, the driving member includes a driving rod installed on the left side of the left pushing member, the driving rod rotates to pass through the support rod and the support plate of the corresponding fixed seat, the upper and lower driving rods are connected by a transmission belt 1, and the two upper driving rods are connected by a transmission belt 2.

[0015] Preferably, a supporting plate is installed on the sliding seat through an elastic rod, and a limiting strip installed on the left side of the sliding seat is arranged at the lower end of the supporting plate, and a roller is installed at the lower end of the supporting plate through the elastic rod. The left end of the supporting plate is chamfered, and when the elastic rod is in a naturally extended state, the height of the upper end surface of the supporting plate is higher than the height of the lower end surface of the plate bundle in a vertical state, and the limiting strip does not contact the supporting plate; positioning holes are provided at the right ends of the two support rods on the rear side, and positioning rods corresponding to the positioning holes are installed on the rear side of the U-shaped groove for sliding back and forth.

[0016] Preferably, two upper and lower symmetrical limit blocks are provided on the front and rear sides of the U-shaped groove, the limit blocks are elastically slidably connected to the inner wall of the U-shaped groove, and a synchronization plate is connected between the two opposite limit blocks, and the synchronization plate is slidably installed in an installation groove connected to the U-shaped groove.

[0017] Preferably, the support rod consists of a fixed section fixedly mounted on a support plate corresponding to a fixed seat and a telescopic section slidably inserted into the right side of the fixed section. The left and right pushing members and the left and right groups of positioning members are respectively located inside the fixed section and the telescopic end, and the connecting rod is a left-right telescopic structure.

[0018] Preferably, a strip groove is provided on the lower side of the right end of the supporting plate, and a strip plate is slidably installed in the strip groove front and back, and a U-shaped plate is installed at the rear end of the strip plate, and the front end of the vertical section of the rear side of the U-shaped plate is tightly attached to the rear end of the clamping plate, and the front end of the clamping plate is connected to the sliding seat through a spring, and a U-shaped clamping groove is provided on the upper part of the clamping plate, and the positioning rod located in the U-shaped groove on the lower side is clamped in the clamping groove, and a limiting ring is provided at the rear end of the positioning rod located in the U-shaped groove on the lower side, and the front side of the limiting ring is an arc surface and is tightly attached to the rear side of the clamping plate; a wedge block is installed on the side where the upper and lower synchronous plates corresponding to the same U-shaped groove are close to each other, and an extrusion block corresponding to the upper and lower wedge blocks is installed on the circumferential side wall of the positioning rod, and the side walls of the extrusion block and the wedge block are both inclined surfaces, and the upper and lower positioning rods are connected by a synchronous rod.

[0019] It can be seen from the above technical solutions that the present application has at least the following beneficial effects:

[0020] The present application uses the four support rods in the support frame to cooperate with the positioning unit to limit the heat exchanger plate bundle in all directions, such as up and down, front and back, and left and right, effectively ensuring the position stability of the plate bundle during welding, thereby ensuring the accuracy of the welding position and improving the welding effect. At the same time, the plate bundle is switched between the vertical and horizontal states through the rotatable support frame to cooperate with the upper welding mechanism and the lower welding mechanism in the welding unit to complete the comprehensive welding of the plate bundle. After the plate bundle state is switched, the height of the upper welding mechanism and the lower welding mechanism can be adaptively adjusted synchronously and timely with the state change of the support frame without spending additional time on adjustment, which effectively improves the continuity of the entire welding process and ensures welding efficiency. In summary, the present application realizes comprehensive, efficient and precise welding operations on the plate bundle through the cooperation of the support frame, the positioning unit and the welding unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the three-dimensional structure of the high-temperature heat exchanger plate bundle welding equipment provided in an embodiment of the present application at one viewing angle.

[0023] Figure 2 A schematic diagram of the three-dimensional structure of the high-temperature resistant heat exchanger plate bundle welding equipment provided in an embodiment of the present application from another perspective.

[0024] Figure 3 This is a front cross-sectional view of the high-temperature heat exchanger plate bundle welding equipment provided in an embodiment of the present application.

[0025] Figure 4 This is a left-side structural schematic diagram of the sliding seat, sliding seat, support plate, support rod, and positioning rod provided in an embodiment of the present application.

[0026] Figure 5 This is a left-side structural schematic diagram of the sliding seat, sliding seat, support plate, support rod, positioning rod, and synchronization rod provided in an embodiment of the present application.

[0027] Figure 6 This is a schematic side sectional view of the pushing member, positioning block and support rod provided in an embodiment of the present application.

[0028] Figure 7 This is a schematic diagram of the top view of the upper sliding plate, welding gun No. 1 and the limiting rod provided in an embodiment of the present application.

[0029] In the figure: 1, bottom plate; 2, support frame; 21, fixed seat; 22, sliding seat; 221, supporting plate; 222, limiting strip; 223, roller; 224, strip plate; 225, U-shaped plate; 226, clamping plate; 23, sliding seat; 24, support plate; 25, support rod; 251, positioning rod; 252, limiting ring; 253, extrusion block; 254, synchronization rod; 26, L-shaped frame; 27, rotating shaft; 28, limiting block; 29, synchronization plate; 30, wedge block; 3. Positioning unit; 31. Pushing member; 311. Round block; 312. Pushing block; 32. Connecting rod; 33. Positioning block; 34. Driving member; 341. Driving rod; 342. Transmission belt one; 343. Transmission belt two; 4. Welding unit; 41. Upper welding mechanism; 411. Upper mounting plate; 412. Upper sliding plate; 413. Welding gun No. 1; 414. Limiting rod; 42. Lower welding mechanism; 421. Lower mounting plate; 422. Lower sliding plate; 423. Welding gun No. 2. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] Reference Figure 1 A high temperature resistant heat exchanger plate bundle welding device comprises: a base plate 1, a support frame 2, a positioning unit 3 and a welding unit 4. The base plate 1 is provided with the support frame 2, the support frame 2 is provided with the positioning unit 3 for positioning the plate bundle, and the base plate 1 is also provided with the welding unit 4.

[0032] Reference Figure 1 and Figure 2The support frame 2 includes a fixed seat 21 fixedly mounted on the base plate 1 and a sliding seat 22 slidably mounted on the base plate 1 left and right. A sliding seat 23 is slidably mounted on the sliding seat 22. A support plate 24 is rotatably mounted on both the fixed seat 21 and the sliding seat 23. Four support rods 25 arranged in a matrix are installed between the two support plates 24. The middle part of the support rod 25 is a hollow structure. The support plate 24 corresponding to the sliding seat 23 is provided with two U-shaped grooves arranged up and down and both openings face forward for supporting the support rods 25; the positions of the support rods 25 correspond one by one to the positions of the four circular holes on the heat exchange plate in the plate bundle. After the sliding seat 23 is slid backward so that the support rod 25 moves out of the U-shaped groove, the circular holes on the multiple stacked heat exchange plates can be aligned one by one with the support rod 25. Then, the stacked heat exchange plates are pushed to the left so that the support rod 25 passes through the corresponding circular holes. Through the cooperation between the support rod 25 and the circular holes, the heat exchange plates are supported and initially limited to prevent the heat exchange plates from sliding back and forth and up and down during welding. Then, the sliding seat 23 is moved forward and reset so that the right end of the support rod 25 moves into the U-shaped groove to prevent the right end of the support rod 25 from being suspended in the air.

[0033] Reference Figure 2 and Figure 3 The positioning unit 3 includes a pushing piece 31 which is symmetrically rotated and installed inside the support rod 25. The left and right pushing pieces 31 are connected by a connecting rod 32. Two groups of positioning pieces corresponding to the pushing pieces 31 are installed on the circumferential side walls of the support rod 25. The positioning pieces include a plurality of positioning blocks 33 evenly distributed along the circumference of the support rod 25. The positioning blocks 33 are elastically slidably connected to the side walls of the support rod 25. The pushing piece 31 is used to push the positioning blocks 33. A driving piece 34 is installed between the support rod 25 and the support plate 24 on the fixed seat 21. After the stacked heat exchange plates move to the middle of the support rod 25, the driving piece 34 drives the pushing piece 31 to push the positioning blocks 33, so that the left and right groups of positioning blocks 33 are respectively in close contact with the left and right side walls of the plate bundle, thereby limiting the left and right directions of the plate bundle and preventing the heat exchange plates from sliding left and right during welding.

[0034] Reference Figure 6 The pushing member 31 includes a circular block 311 rotatably mounted inside the support rod 25, and a plurality of pushing blocks 312 corresponding to the positioning blocks 33 are evenly mounted on the circumferential side wall of the circular block 311, and one end of the pushing block 312 away from the circular block 311 is an arc structure.

[0035] The circular block 311 is driven to rotate by the driving member 34 until the circular block 311 drives the pushing block 312 to correspond to the positioning block 33 one by one, and the pushing block 312 pushes the positioning block 33 so that the positioning block 33 extends out of the side wall of the support rod 25 to limit the plate bundle.

[0036] Reference Figure 2 and Figure 3The driving member 34 includes a driving rod 341 installed on the left side of the left pushing member 31. The driving rod 341 rotates and penetrates the support rod 25 and the support plate 24 of the corresponding fixed seat 21. The upper and lower driving rods 341 are connected by a transmission belt 1 342, and the two upper driving rods 341 are connected by a transmission belt 2 343.

[0037] When any one of the driving rods 341 is rotated, under the transmission action of the transmission belt 1 342 and the transmission belt 2 343, the other driving rods 341 also rotate synchronously, thereby driving the pushing member 31 on the left to rotate. Under the action of the connecting rod 32, the pushing member 31 on the right also rotates synchronously, thereby being able to synchronously drive multiple groups of positioning members to position the plate bundle.

[0038] Reference Figure 1 , Figure 2 and Figure 3 The fixed seat 21 and the sliding seat 23 are both provided with vertical slide grooves, in which an L-shaped frame 26 is elastically slidably installed up and down. The upper end of the vertical section of the L-shaped frame 26 is a retractable structure. A rotating shaft 27 connected to the center position of the support plate 24 is rotatably installed in the middle of the upper end of the vertical section of the L-shaped frame 26, and a handle is installed on the rotating shaft 27.

[0039] The rotating shaft 27 and the support plate 24 are rotated by rotating the handle, and then the plate bundle is rotated by the support rod 25 and the positioning unit 3, so that the plate bundle can be switched between vertical and horizontal states, so as to fully weld the gaps between adjacent heat exchange plates in the plate bundle.

[0040] Before rotating the support plate 24, in order to reduce the friction between the support plate 24 and the corresponding fixed seat 21 and sliding seat 23, the vertical section of the L-shaped frame 26 can be manually pulled upward until there is enough space for rotation between the lower end of the support plate 24 and the corresponding fixed seat 21 and sliding seat 23. When the plate bundle rotates from the vertical state to the horizontal state, the vertical section of the L-shaped frame 26 returns to its original length. Then, the plate bundle drives the L-shaped frame 26 to slide downward under the action of its own gravity, so that the horizontal section of the L-shaped frame 26 slides downward along the vertical slide groove until the lower end surface of the support plate 24 is tightly attached to the corresponding upper end surface of the fixed seat 21 and sliding seat 23 when it is rotated to the horizontal state.

[0041] Reference Figure 1 The welding unit 4 includes an upper welding mechanism 41 for welding the plate bundle from the upper side and a lower welding mechanism 42 for welding the plate bundle from the lower side. When the plate bundle is in a vertical state, the two short sides of the adjacent heat exchange plates are welded by the upper welding mechanism 41 and the lower welding mechanism 42. When the plate bundle is in a horizontal state, the two long sides of the adjacent heat exchange plates are welded by the upper welding mechanism 41 and the lower welding mechanism 42. The upper and lower sides are welded synchronously, which effectively improves the welding efficiency.

[0042] Reference Figure 2 , Figure 3 and Figure 7 The upper welding mechanism 41 includes an upper mounting plate 411 mounted on the base plate 1 through an elastic telescopic rod, an upper sliding plate 412 is slidably mounted on the lower end of the upper mounting plate 411, a plurality of No. 1 welding guns 413 are mounted on the lower end of the upper sliding plate 412, and four limit rods 414 distributed in a matrix are also mounted on the lower end of the upper sliding plate 412, and the No. 1 welding gun 413 is located inside the rectangular area formed by the four limit rods 414; the upper mounting plate 411 and the elastic telescopic rod are connected by bolts, so that the upper mounting plate 411 and the upper sliding plate 412 and the No. 1 welding gun 413 at the lower end of the upper mounting plate 411 can be replaced as needed for welding plate bundles of different specifications.

[0043] Reference Figure 2 and Figure 3 The lower welding mechanism 42 includes a lower mounting plate 421 connected to the right end of the horizontal section of the L-shaped frame 26 on the fixed seat 21 through a connecting plate, a lower sliding plate 422 is installed on the upper end of the lower mounting plate 421 for sliding forward and backward movement, and a plurality of No. 2 welding guns 423 are installed on the lower sliding plate 422. Bolts can be used to connect the connecting plate and the L-shaped frame 26, and between the lower mounting plate 421 and the connecting plate, so that the lower mounting plate 421 and the lower sliding plate 422 and the No. 2 welding gun 423 at the upper end of the lower mounting plate 421 can be replaced as needed for welding plate bundles of different specifications; the upper sliding plate 412 and the lower sliding plate 422 are driven by an electric slider to drive the corresponding No. 1 welding gun 413 or No. 2 welding gun 423 to weld the gap between adjacent heat exchange plates in the front-to-back direction; when the welding of the two short sides of the heat exchange plates in the plate bundle is completed, the rotating shaft 27 is driven to rotate by turning the handle until the support plate 24 is driven The movable plate bundle is rotated 90 degrees, so that the plate bundle is rotated from a vertical state to a horizontal state. When the two long sides of the heat exchange plates in the plate bundle are welded, the heights of the upper and lower sides of the plate bundle change. During this process, the lower mounting plate 421 can be synchronously adjusted up and down with the L-shaped frame 26 under the connection of the connecting plate. There is no need to adjust the position of the lower mounting plate 421 separately, and the upper mounting plate 411 automatically moves downward through the elastic force of the elastic telescopic rod until the bottom end of the limit rod 414 rests against the upper end of the plate bundle. There is also no need to specially adjust the position of the upper mounting plate 411, which effectively simplifies the operation steps and improves the welding efficiency.

[0044] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5A supporting plate 221 is installed on the sliding seat 22 through an elastic rod, and a limiting strip 222 installed on the left side of the sliding seat 23 is arranged at the lower end of the supporting plate 221, and a roller 223 is installed at the lower end of the supporting plate 221 through the elastic rod; the roller 223 is in contact with the upper end surface of the bottom plate 1, and the roller 223 is used to reduce the friction when the supporting plate 221 moves left and right with the sliding seat 22. The left end of the supporting plate 221 is chamfered, and when the elastic rod is in a naturally extended state, the height of the upper end surface of the supporting plate 221 is higher than the height of the lower end surface of the plate bundle in a vertical state, and the limiting strip 222 does not contact the supporting plate 221.

[0045] When the gaps between adjacent heat exchange plates in the plate bundle are fully welded, the support plate 24 is rotated 90 degrees in the opposite direction to restore the plate bundle to a vertical state. At this time, the driving member 34 drives the pushing member 31 in the opposite direction to reset the positioning block 33, release the limit on the left and right directions of the plate bundle, and then push the plate bundle to the right. When the plate bundle moves to a position close to the right support plate 24, the right end of the plate bundle pushes the left end of the supporting plate 221, so that the supporting plate 221 moves downward until its lower end face is aligned with the upper end of the limiting strip 222. The surface is tightly attached, and the plate bundle continues to be pushed to the right. When the plate bundle is completely moved to the supporting plate 221, the sliding seat 23 can be moved backward, and the sliding seat 23 drives the supporting plate 24 to move backward synchronously until the positioning rod 251 and the positioning hole, the U-shaped groove and the supporting rod 25 are completely separated. At this time, the plate bundle can be removed from between the four supporting rods 25. The supporting plate 221 can play a certain supporting role in the process of removing the plate bundle, so as to prevent the supporting rod 25 from being deformed or damaged due to excessive weight when the right end is suspended in the air.

[0046] Reference Figure 4 The right ends of the two support rods 25 on the rear side are provided with positioning holes, and a positioning rod 251 corresponding to the positioning hole is installed on the rear side of the U-shaped groove for sliding forward and backward. After the positioning rod 251 is inserted into the corresponding positioning hole, the right support plate 24 can be limited to the left and right, and then the sliding seat 23 and the sliding seat 22 can be limited to the left and right, so that when the right-moving plate bundle pushes the left end of the supporting plate 221, the supporting plate 221 will not drive the sliding seat 23 and the sliding seat 22 to move right, thereby ensuring stability during work.

[0047] Reference Figure 4 Two upper and lower symmetrical limit blocks 28 are provided on both sides of the front and rear of the U-shaped groove. The limit blocks 28 are elastically slidably connected to the inner wall of the U-shaped groove. A synchronous plate 29 is connected between the two relatively front and rear limit blocks 28. The synchronous plate 29 is slidably installed in the installation groove connected to the U-shaped groove. When the support plate 24 drives the plate bundle to rotate from a vertical state to a horizontal state, the support rod 25 originally located on the front side will rotate to the lower side. During this process, the limit block 28 can support the support rod 25 to prevent the right end of the support rod 25 from being suspended in the air to form a cantilever beam structure, thereby improving the strength of the overall structure and thus improving the stability during welding.

[0048] Reference Figure 3 The support rod 25 is composed of a fixed section fixedly mounted on the support plate 24 corresponding to the fixed seat 21 and a telescopic section slidably inserted on the right side of the fixed section. The left and right pushing members 31 and the left and right positioning members are respectively located inside the fixed section and the telescopic end. The connecting rod 32 is a left and right telescopic structure. The left and right position of the telescopic section can be adjusted according to the specifications of the plate bundle, that is, the number and thickness of the heat exchange plates, and then the spacing between the positioning blocks 33 on the left and right sides can be adjusted. During the adjustment process, the length of the connecting rod 32 changes accordingly. After the position of the telescopic section is adjusted, the telescopic section and the fixed section can be fixedly connected by bolts.

[0049] Reference Figure 3 , Figure 4 and Figure 5 A strip groove is provided on the lower side of the right end of the supporting plate 221, and a strip plate 224 is slidably installed in the strip groove. A U-shaped plate 225 is installed at the rear end of the strip plate 224. The front end of the vertical section of the rear side of the U-shaped plate 225 is tightly attached to the rear end of the clamping plate 226. The front end of the clamping plate 226 is connected to the sliding seat 23 through a spring. A U-shaped clamping groove with an opening facing upward is provided on the upper section of the clamping plate 226. The positioning rod 251 located in the lower U-shaped groove is clamped in the clamping groove. A limiting ring 252 is provided at the rear end of the positioning rod 251 located in the lower U-shaped groove. The front side of the limiting ring 252 is an arc surface and is tightly attached to the rear side of the clamping plate 226.

[0050] Reference Figure 3 , Figure 4 and Figure 5 A wedge block 30 is installed on the side where the upper and lower synchronization plates 29 corresponding to the same U-shaped groove are close to each other, and an extrusion block 253 corresponding to the upper and lower wedge blocks 30 is installed on the circumferential side wall of the positioning rod 251. The side walls of the extrusion block 253 and the wedge block 30 are both inclined surfaces, and the upper and lower positioning rods 251 are connected by a synchronization rod 254.

[0051] When welding is completed, the plate bundle restored to the vertical state is pushed to the right onto the supporting plate 221. Under the action of the gravity of the plate bundle, the supporting plate 221 drives the U-shaped plate 225 downward through the strip plate 224 and makes the vertical section of the rear side of the U-shaped plate 225 no longer contact the clamping plate 226. At this time, under the elastic action of the spring, the clamping plate 226 moves backward and simultaneously applies a backward thrust to the limiting ring 252, so that the limiting ring 252 drives the corresponding positioning rod 251 to move backward. Under the action of the synchronous rod 254, the other positioning rod 251 also moves backward synchronously, so that the two positioning rods 251 both drive the corresponding extrusion block 253 to push the wedge block 30, so that the wedge block 30 drives the synchronous plate 29 to move, and the upper and lower synchronous plates 29 are mutually The limit block 28 is moved away from the support rod 25 so that the distance between the two upper and lower relative limit blocks 28 is greater than the diameter of the support rod 25, and the limit block 28 on the support rod 25 is released, so that the sliding seat 23 can drive the support plate 24 with the U-shaped groove to move backward. There is no need to use manual or electric methods to drive the limit block 28 to release the limit, which saves work costs. The action of releasing the limit by the limit block 28 is completed in the process of pushing the welded plate bundle to the right, and there is no need to interrupt the pushing of the plate bundle and then release the limit, which effectively improves the continuity of the overall operation, shortens the working time, and thus improves the work efficiency. After the sliding seat 23 drives the support plate 24 with the U-shaped groove to move backward until the support rod 25 is completely moved out of the U-shaped groove, the plate bundle can be removed from the support rod 25.

[0052] It should be noted that in the process of rotating the plate bundle from a vertical state to a horizontal state, the vertical section of the L-shaped frame 26 is first manually pulled upward so that there is enough space for rotation between the lower end of the support plate 24 and the corresponding fixed seat 21 and the sliding seat 23. Therefore, the positioning rod 251 can be moved out of the slot on the clamping plate 226 when the support plate 24 moves upward, so the clamping plate 226 will not hinder the rotation of the support plate 24.

[0053] In the description of this application, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0054] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high temperature resistant heat exchanger plate bundle welding device, wherein four round holes are opened on the heat exchange plate in the plate bundle, characterized in that: include: A base plate (1), a support frame (2), a positioning unit (3) and a welding unit (4), wherein the base plate (1) is mounted with the support frame (2), the support frame (2) is mounted with the positioning unit (3) for positioning the plate bundle, and the base plate (1) is also mounted with the welding unit (4); The support frame (2) comprises a fixed seat (21) fixedly mounted on the bottom plate (1) and a sliding seat (22) slidably mounted on the bottom plate (1) left and right, a sliding seat (23) being slidably mounted on the sliding seat (22) forward and backward, a support plate (24) being rotatably mounted on both the fixed seat (21) and the sliding seat (23), four support rods (25) arranged in a matrix are mounted between the two support plates (24), the middle part of the support rod (25) is a hollow structure, two U-shaped grooves arranged up and down and both openings facing forward for supporting the support rod (25) are provided on the support plate (24) corresponding to the sliding seat (23), the positions of the support rods (25) correspond one to one with the positions of the four circular holes on the heat exchange plate in the plate bundle; The positioning unit (3) comprises a pushing member (31) symmetrically mounted inside the support rod (25) for rotation, the two pushing members (31) are connected by a connecting rod (32), two groups of positioning members corresponding to the pushing members (31) are mounted on the circumferential side wall of the support rod (25), the positioning member comprises a plurality of positioning blocks (33) uniformly distributed along the circumference of the support rod (25), the positioning blocks (33) are elastically slidably connected to the side wall of the support rod (25), the pushing member (31) is used to push the positioning block (33), and a driving member (34) is mounted between the support rod (25) and the support plate (24) on the fixed seat (21); The welding unit (4) comprises an upper welding mechanism (41) for welding the plate bundle from the upper side and a lower welding mechanism (42) for welding the plate bundle from the lower side.

2. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 1, characterized in that: The fixed seat (21) and the sliding seat (23) are both provided with a vertical slide groove, in which an L-shaped frame (26) is elastically slidably installed up and down, the upper end of the vertical section of the L-shaped frame (26) is a telescopic structure, and a rotating shaft (27) connected to the center position of the support plate (24) is rotatably installed in the middle of the upper end of the vertical section of the L-shaped frame (26), and a handle is installed on the rotating shaft (27).

3. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 1, characterized in that: The upper welding mechanism (41) comprises an upper mounting plate (411) mounted on the bottom plate (1) via an elastic telescopic rod, an upper sliding plate (412) being mounted on the lower end of the upper mounting plate (411) for forward and backward sliding movement, a plurality of No. 1 welding guns (413) being mounted on the lower end of the upper sliding plate (412), and four limiting rods (414) distributed in a matrix are also mounted on the lower end of the upper sliding plate (412), and the No. 1 welding gun (413) is located inside a rectangular area formed by the four limiting rods (414).

4. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 2, characterized in that: The lower welding mechanism (42) comprises a lower mounting plate (421) connected to the right end of the horizontal section of the L-shaped frame (26) on the fixed seat (21) through a connecting plate, a lower sliding plate (422) is slidably mounted on the upper end of the lower mounting plate (421), and a plurality of No. 2 welding guns (423) are mounted on the lower sliding plate (422).

5. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 1, characterized in that: The pushing member (31) comprises a circular block (311) rotatably mounted inside the support rod (25), a plurality of pushing blocks (312) corresponding to the positioning blocks (33) are evenly mounted on the circumferential side wall of the circular block (311), and one end of the pushing block (312) away from the circular block (311) is an arc-shaped structure.

6. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 1, characterized in that: The driving member (34) comprises a driving rod (341) installed on the left side of the left pushing member (31); the driving rod (341) rotates to penetrate the supporting rod (25) and the supporting plate (24) corresponding to the fixing seat (21); the upper and lower driving rods (341) are connected by a transmission belt 1 (342); and the two upper driving rods (341) are connected by a transmission belt 2 (343).

7. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 1, characterized in that: A support plate (221) is mounted on the sliding seat (22) via an elastic rod, a limit bar (222) mounted on the left side of the sliding seat (23) is arranged at the lower end of the support plate (221), a roller (223) is mounted at the lower end of the support plate (221) via the elastic rod, the left end of the support plate (221) is chamfered, when the elastic rod is in a naturally extended state, the height of the upper end surface of the support plate (221) is higher than the height of the lower end surface of the plate bundle in a vertical state, and the limit bar (222) does not contact the support plate (221); positioning holes are provided at the right ends of the two support rods (25) at the rear side, and a positioning rod (251) corresponding to the positioning hole is slidably mounted on the rear side of the U-shaped groove.

8. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 7, characterized in that: Two upper and lower symmetrical limit blocks (28) are arranged on both the front and rear sides of the U-shaped groove, the limit blocks (28) are elastically slidably connected to the inner wall of the U-shaped groove, a synchronous plate (29) is connected between the two limit blocks (28) opposite to each other, and the synchronous plate (29) is slidably installed in an installation groove connected to the U-shaped groove.

9. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 8, characterized in that: The support rod (25) is composed of a fixed section fixedly mounted on a support plate (24) corresponding to a fixed seat (21) and a telescopic section slidably plugged into the right side of the fixed section. The left and right pushing members (31) and the left and right positioning members are respectively located inside the fixed section and the telescopic end. The connecting rod (32) is a left and right telescopic structure.

10. The high temperature resistant heat exchanger plate bundle welding equipment according to claim 9, characterized in that: A strip groove is provided at the lower side of the right end of the supporting plate (221), a strip plate (224) is slidably installed in the strip groove, a U-shaped plate (225) is installed at the rear end of the strip plate (224), the front end of the vertical section at the rear side of the U-shaped plate (225) is in close contact with the rear end of the clamping plate (226), the front end of the clamping plate (226) is connected to the sliding seat (23) through a spring, the upper section of the clamping plate (226) is provided with a U-shaped clamping groove with an opening facing upward, a positioning rod (251) located in the lower U-shaped groove is clamped in the clamping groove, and a limiting ring (252) is provided at the rear end of the positioning rod (251) located in the lower U-shaped groove, the front side of the limiting ring (252) is an arc surface and is in close contact with the rear side of the clamping plate (226); A wedge block (30) is installed on the side of the upper and lower synchronous plates (29) corresponding to the same U-shaped groove that are close to each other, and an extrusion block (253) corresponding to the upper and lower wedge blocks (30) is installed on the circumferential side wall of the positioning rod (251). The side walls of the extrusion block (253) and the wedge block (30) that match each other are both inclined surfaces, and the upper and lower positioning rods (251) are connected by a synchronous rod (254).

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