Automatic welding device for tube plate

Abstract

The utility model discloses an automatic tube plate welding device which comprises a base, a positioning groove is formed in the center of the base, lifting mechanisms are correspondingly arranged on the two sides of the base, lifting rods of the lifting mechanisms stretch out upwards, an integrated station plate is installed at the rod ends, an L-shaped station groove is formed in the inner side of the station plate, and the L-shaped station groove is formed in the inner side of the station plate. And communicating grooves are correspondingly formed in the inner sides of the station grooves, and the station grooves and the communicating grooves correspond to the positioning grooves in the base below in position. According to the device, the positions of the tube holes in the tube plate correspond to the positions of the positioning convex columns on the positioning circular plate, the placing positions are determined under the action of the limiting grooves and the limiting blocks, the positions of the tube bodies can be determined by placing the tube bodies from the tube holes and correspondingly sleeving the lower ends of the tube bodies in the positioning convex columns, and the tube bodies are absolutely vertically placed, so that the accuracy of perpendicularity is ensured; and the position of the pipe body is effectively fixed, and the welding efficiency and quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing and manufacturing tube sheets in heat exchangers, in particular to an automatic tube sheet welding device. Background Art

[0002] like Figure 1 As shown, the tube sheet in the prior art refers to a tube sheet in which tube holes are machined on a circular steel plate, and then the tube body of the heat exchange tube is inserted into the tube hole, and then the tube body is welded and fixed on the circular steel plate to form an integral tube sheet.

[0003] The tube sheet in the prior art is basically used in the heat exchanger, specifically used for a certain medium in the heat exchanger to pass through the tube body and then exchange heat with the medium outside the tube body; there are also many specific welding mechanisms of the tube sheet in the prior art, for example: the technical solution of the publication (announcement) number: CN210677492U discloses "a tube sheet welding device"; the technical solution of the publication (announcement) number: CN216370903U discloses "a tube sheet welding tool", etc.

[0004] In the prior art, the biggest difficulty in tube sheet welding is that the verticality of the tube body inserted into the tube hole needs to be maintained. The tube body must be installed vertically in the tube hole and needs to be kept fixed, otherwise it is easy to cause welding misalignment of the tube body during actual welding.

[0005] In addition, different heat exchangers have different height requirements for the tubes on the tube sheets. Usually, during welding, the tubes need to be partially extended from one side of the tube sheet, and then the extended part of the tubes needs to be welded and fixed to the tube sheet. Tubes of different lengths require different mechanisms to achieve fixation, and the above functions are usually not achieved in the prior art.

[0006] Therefore, in order to solve the above problems, it is necessary to develop an automatic tube sheet welding device with a reasonable structure that can maintain the verticality of the tube body accordingly. Utility Model Content

[0007] The purpose of the utility model is to provide a tube sheet automatic welding device to address the deficiencies of the prior art; its technical solution is as follows:

[0008] A tube sheet automatic welding device comprises a base, a positioning groove is arranged at the center of the base, lifting mechanisms are arranged on both sides of the base, the lifting rod of the lifting mechanism extends upward, and an integral station plate is installed at the rod end, an L-shaped station groove is arranged on the inner side of the station plate, and a connecting groove is arranged on the inner side of the station groove, and the station groove and the connecting groove both correspond to the position of the positioning groove on the lower base;

[0009] The size of the workstation groove is set to match the size of the tube sheet, the tube sheet is placed in the workstation groove, the edge of the tube sheet is supported by the workstation groove, and the position of the connecting groove is set accordingly, so that the tube holes on the tube sheet are all located in the connecting groove area, and the tube bodies to be welded inserted into the tube holes are all extended downward from the position of the connecting groove;

[0010] A replaceable positioning circular plate is placed in the positioning groove at the bottom, and a positioning convex column is correspondingly arranged on the positioning circular plate. The setting position of the positioning convex column corresponds to the position of the tube hole on the upper tube plate, and the size of the positioning convex column is adapted to the inner diameter of the tube hole. After the tube body in the tube hole extends downward, the lower end portion is correspondingly mounted on the positioning convex column, so that the tube body is fixed in a vertical position;

[0011] An automatic welding device is also arranged above the work station plate. When the position of the tube body in the tube hole on the tube plate is fixed, the tube body is welded and fixed on the tube plate at the upper end surface of the tube plate by the automatic welding device to maintain the verticality of the tube body.

[0012] Furthermore, the tube holes on the tube plate are all arranged in a ring shape, so that the positioning bosses on the positioning circular plate are also arranged in a ring shape.

[0013] Furthermore, the depth of the positioning groove is set accordingly so that the upper end surface of the positioning circular plate protrudes from the positioning groove accordingly; the depth of the station groove is set accordingly so that the upper end surface of the tube sheet protrudes from the station groove accordingly.

[0014] Furthermore, vertical limit grooves and limit blocks are provided between the positioning circular plate and the positioning groove, and between the tube sheet and the station groove, so that the placement positions of the positioning circular plate and the tube sheet are fixed, and the upper and lower positioning bosses correspond to the positions of the tube holes.

[0015] Furthermore, the work station plate is also laterally provided with a plurality of clamping mechanisms, and a clamping block is installed on the main shaft of the clamping mechanism. The clamping block is correspondingly embedded in the work station plate. After the clamping block is extended, it can be pressed on the side wall of the tube plate to fix the tube plate.

[0016] Furthermore, there are four clamping mechanisms in total, which are cross-arranged and move synchronously.

[0017] Furthermore, the automatic welding equipment has the functions of height adjustment, position adjustment and welding head direction adjustment, so that the automatic welding equipment can weld the upper end of each pipe body.

[0018] Furthermore, a support rod is installed at the upper end of the work station plate, and an adjustment frame is correspondingly arranged between the support rods on both sides, and the automatic welding equipment is correspondingly installed on the adjustment frame.

[0019] Beneficial effects: The utility model has the following beneficial effects:

[0020] 1) In this device, the positions of the tube holes on the tube plate and the positioning bosses on the positioning circular plate correspond to each other, and under the action of the limiting grooves and the limiting blocks, the insertion position is determined. The tube body is inserted from the tube hole position, and the lower end of the tube body is correspondingly sleeved in the positioning bosses. The position of the tube body can be determined, and it is absolutely placed vertically, ensuring accurate verticality, effectively fixing the position of the tube body, and improving the efficiency and quality of welding;

[0021] 2) In this device, there is no obstacle on the upper end surface of the tube sheet, and the automatic welding equipment can weld the tube body on the upper end surface of the tube sheet, which will not affect the welding position of the automatic welding equipment, and can ensure that all tube bodies can be welded accordingly;

[0022] 3) The lifting mechanisms on both sides of the device can adjust the height of the workstation plate accordingly. No matter how long the pipe body to be welded is, it is only necessary to adjust the height of the workstation plate so that the upper end of the pipe body protrudes 1-2cm from the upper end surface of the tube plate, and then weld it. It can adapt to the welding of pipes and tube plates of any length;

[0023] 4) In this device, a transverse clamping mechanism is also provided at the position of the work station plate, which can clamp the tube sheet as a whole from the side, making welding more convenient;

[0024] 5) This device installs support rods on both sides of the work station plate, and an adjustment frame is set on the support rod. The automatic link equipment is installed on the adjustment frame accordingly. Since the height of the work station plate itself needs to be adjusted according to the height of the welded pipe body, and in this device, since the upper adjustment frame is lifted and lowered as a whole, there is no need to set the height of the automatic welding equipment separately. It can be lifted and lowered synchronously at any time, and the structure is more reasonable. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of a tube sheet in the prior art;

[0026] Figure 2 This is a structural diagram of Embodiment 1 of the present utility model;

[0027] Figure 3 This is a structural diagram of Embodiment 2 of the present utility model;

[0028] Figure 4 for Figure 3 Middle AA section view;

[0029] Figure 5 This is a structural diagram of embodiment 3 of the present utility model. DETAILED DESCRIPTION

[0030] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. The embodiments are implemented based on the technical solution of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0031] Example 1

[0032] like Figure 2 and Figure 3 As shown, an automatic tube-sheet welding device of this embodiment comprises a base 1, a positioning groove 2 is arranged at the center of the base 1, and lifting mechanisms 3 are arranged on both sides of the base 1, and a lifting rod 4 of the lifting mechanism 3 extends upward, and an integral station plate 5 is installed at the rod end, and an L-shaped station groove 6 is arranged on the inner side of the station plate 5, and a connecting groove 7 is correspondingly arranged on the inner side of the station groove 6, and both the station groove 6 and the connecting groove 7 correspond to the position of the positioning groove 2 on the lower base 1;

[0033] The size of the workstation groove 6 is correspondingly set to match the size of the tube sheet 8, the tube sheet 8 is correspondingly placed in the workstation groove 6, the edge of the tube sheet 8 is supported by the workstation groove 6, and the position of the connecting groove 7 is correspondingly set, so that the tube holes 9 on the tube sheet 8 are all located in the area of ​​the connecting groove 7, and the tube bodies 10 to be welded inserted into the tube holes 9 are correspondingly extended downward from the position of the connecting groove 7;

[0034] A replaceable positioning circular plate 11 is placed in the positioning groove 2 at the bottom, and a positioning convex column 12 is correspondingly arranged on the positioning circular plate 11. The setting position of the positioning convex column 12 corresponds to the position of the tube hole 9 on the upper tube plate 8. The size of the positioning convex column 12 is adapted to the inner diameter of the tube hole 9. After the tube body 10 in the tube hole 9 extends downward, the lower end portion is correspondingly fitted on the positioning convex column 12, so that the tube body 10 is fixed in a vertical position;

[0035] An automatic welding device 13 is also provided above the work station plate 5. When the position of the tube body 10 in the tube hole 9 on the tube plate 8 is fixed, the tube body 10 is welded and fixed to the tube plate 8 at the upper end surface of the tube plate 8 by the automatic welding device 13 to maintain the verticality of the tube body 10.

[0036] The tube holes 9 on the tube sheet 8 are all arranged in an annular shape, so that the positioning protrusions 12 on the positioning circular plate 11 are also arranged in an annular shape.

[0037] The depth of the positioning groove 2 is set accordingly so that the upper end surface of the positioning circular plate 11 protrudes from the positioning groove 2 accordingly; the depth of the station groove 6 is set accordingly so that the upper end surface of the tube plate 8 protrudes from the station groove 6 accordingly.

[0038] Vertical limit grooves 14 and limit blocks 15 are provided between the positioning circular plate 11 and the positioning groove 2 and between the tube sheet 8 and the station groove 6, so that the placement positions of the positioning circular plate 11 and the tube sheet 8 are fixed, and the upper and lower positioning bosses 12 correspond to the positions of the tube holes 9.

[0039] The working principle of this device is as follows: during specific operation, the tube sheet with processed tube holes is placed in the work position slot, and the positioning circular plate is placed in the positioning slot below accordingly; the positions of the positioning bosses on the tube sheet and the positioning circular plate correspond to each other, and under the action of the limit slot and the limit block, the insertion position is determined, so the positions of the upper and lower tube holes and the positioning bosses are also fixed.

[0040] After that, the tube body can be inserted from the tube hole position, and the lower end of the tube body can be correspondingly sleeved in the positioning boss. The position of the tube body can be determined, and it is absolutely placed vertically to ensure accurate verticality. Then, the tube body can be welded on the upper end of the tube plate through automatic welding equipment, which will not affect the welding position of the automatic welding equipment and can ensure that all tube bodies can be welded accordingly.

[0041] In the above process, the lifting mechanisms on both sides can adjust the height of the work station plate accordingly. No matter how long the pipe body to be welded is, it is only necessary to adjust the height of the work station plate so that the upper end of the pipe body extends 1-2 cm from the upper end surface of the tube plate, and then welding can be performed. It can adapt to the welding work of pipes and tube plates of any length.

[0042] In addition, the positioning circular plate in the device can be disassembled and replaced. The position of the tube hole on the tube sheet may be different according to the position of different heat exchanger settings. Several positioning circular plates can be made according to the position of the tube hole, corresponding to different tube sheet welding tasks, and can be replaced at any time. The structure is reasonably set.

[0043] Example 2

[0044] As shown Figure 3 and Figure 4 As shown, an automatic tube-sheet welding device of this embodiment comprises a base 1, a positioning groove 2 is arranged at the center of the base 1, and lifting mechanisms 3 are arranged on both sides of the base 1, and a lifting rod 4 of the lifting mechanism 3 extends upward, and an integral station plate 5 is installed at the rod end, and an L-shaped station groove 6 is arranged on the inner side of the station plate 5, and a connecting groove 7 is correspondingly arranged on the inner side of the station groove 6, and both the station groove 6 and the connecting groove 7 correspond to the position of the positioning groove 2 on the lower base 1;

[0045] The size of the workstation groove 6 is correspondingly set to match the size of the tube sheet 8, the tube sheet 8 is correspondingly placed in the workstation groove 6, the edge of the tube sheet 8 is supported by the workstation groove 6, and the position of the connecting groove 7 is correspondingly set, so that the tube holes 9 on the tube sheet 8 are all located in the area of ​​the connecting groove 7, and the tube bodies 10 to be welded inserted into the tube holes 9 are correspondingly extended downward from the position of the connecting groove 7;

[0046] A replaceable positioning circular plate 11 is placed in the positioning groove 2 at the bottom, and a positioning convex column 12 is correspondingly arranged on the positioning circular plate 11. The setting position of the positioning convex column 12 corresponds to the position of the tube hole 9 on the upper tube plate 8. The size of the positioning convex column 12 is adapted to the inner diameter of the tube hole 9. After the tube body 10 in the tube hole 9 extends downward, the lower end portion is correspondingly fitted on the positioning convex column 12, so that the tube body 10 is fixed in a vertical position;

[0047] An automatic welding device 13 is also provided above the work station plate 5. When the position of the tube body 10 in the tube hole 9 on the tube plate 8 is fixed, the tube body 10 is welded and fixed to the tube plate 8 at the upper end surface of the tube plate 8 by the automatic welding device 13 to maintain the verticality of the tube body 10.

[0048] The tube holes 9 on the tube sheet 8 are all arranged in an annular shape, so that the positioning protrusions 12 on the positioning circular plate 11 are also arranged in an annular shape.

[0049] The depth of the positioning groove 2 is set accordingly so that the upper end surface of the positioning circular plate 11 protrudes from the positioning groove 2 accordingly; the depth of the station groove 6 is set accordingly so that the upper end surface of the tube plate 8 protrudes from the station groove 6 accordingly.

[0050] Vertical limit grooves 14 and limit blocks 15 are provided between the positioning circular plate 11 and the positioning groove 2 and between the tube sheet 8 and the station groove 6, so that the placement positions of the positioning circular plate 11 and the tube sheet 8 are fixed, and the upper and lower positioning bosses 12 correspond to the positions of the tube holes 9.

[0051] A plurality of clamping mechanisms 16 are also horizontally arranged on the work station plate 5. A pressing block 17 is installed on the main shaft of the clamping mechanism 16. The pressing block 17 is correspondingly embedded in the work station plate 5. After the pressing block 17 is extended, it can be pressed on the side wall of the tube sheet 8 to fix the tube sheet 8.

[0052] There are four clamping mechanisms 16 in total. The four clamping mechanisms 16 are arranged in a cross shape and move synchronously.

[0053] This embodiment is based on the technical solution of Example 1, and a transverse clamping mechanism is further provided at the position of the work station plate. Although in Example 1, the shape and structure of the work station groove is adapted to the tube sheet, and a limit groove and a limit block are also provided, in order to prevent accidents during specific welding, a clamping mechanism is still provided on the work station plate. The clamping mechanism clamps the tube sheet as a whole from the side, which can make welding more convenient.

[0054] Example 3

[0055] like Figure 5 As shown, an automatic tube-sheet welding device of this embodiment comprises a base 1, a positioning groove 2 is arranged at the center of the base 1, and lifting mechanisms 3 are arranged on both sides of the base 1, and a lifting rod 4 of the lifting mechanism 3 extends upward, and an integral station plate 5 is installed at the rod end, and an L-shaped station groove 6 is arranged on the inner side of the station plate 5, and a connecting groove 7 is correspondingly arranged on the inner side of the station groove 6, and both the station groove 6 and the connecting groove 7 correspond to the position of the positioning groove 2 on the lower base 1;

[0056] The size of the workstation groove 6 is correspondingly set to match the size of the tube sheet 8, the tube sheet 8 is correspondingly placed in the workstation groove 6, the edge of the tube sheet 8 is supported by the workstation groove 6, and the position of the connecting groove 7 is correspondingly set, so that the tube holes 9 on the tube sheet 8 are all located in the area of ​​the connecting groove 7, and the tube bodies 10 to be welded inserted into the tube holes 9 are correspondingly extended downward from the position of the connecting groove 7;

[0057] A replaceable positioning circular plate 11 is placed in the positioning groove 2 at the bottom, and a positioning convex column 12 is correspondingly arranged on the positioning circular plate 11. The setting position of the positioning convex column 12 corresponds to the position of the tube hole 9 on the upper tube plate 8. The size of the positioning convex column 12 is adapted to the inner diameter of the tube hole 9. After the tube body 10 in the tube hole 9 extends downward, the lower end portion is correspondingly fitted on the positioning convex column 12, so that the tube body 10 is fixed in a vertical position;

[0058] An automatic welding device 13 is also provided above the work station plate 5. When the position of the tube body 10 in the tube hole 9 on the tube plate 8 is fixed, the tube body 10 is welded and fixed to the tube plate 8 at the upper end surface of the tube plate 8 by the automatic welding device 13 to maintain the verticality of the tube body 10.

[0059] The tube holes 9 on the tube sheet 8 are all arranged in an annular shape, so that the positioning protrusions 12 on the positioning circular plate 11 are also arranged in an annular shape.

[0060] The depth of the positioning groove 2 is set accordingly so that the upper end surface of the positioning circular plate 11 protrudes from the positioning groove 2 accordingly; the depth of the station groove 6 is set accordingly so that the upper end surface of the tube plate 8 protrudes from the station groove 6 accordingly.

[0061] Vertical limit grooves 14 and limit blocks 15 are provided between the positioning circular plate 11 and the positioning groove 2 and between the tube sheet 8 and the station groove 6, so that the placement positions of the positioning circular plate 11 and the tube sheet 8 are fixed, and the upper and lower positioning bosses 12 correspond to the positions of the tube holes 9.

[0062] A plurality of clamping mechanisms 16 are also horizontally arranged on the work station plate 5. A pressing block 17 is installed on the main shaft of the clamping mechanism 16. The pressing block 17 is correspondingly embedded in the work station plate 5. After the pressing block 17 is extended, it can be pressed on the side wall of the tube sheet 8 to fix the tube sheet 8.

[0063] There are four clamping mechanisms 16 in total. The four clamping mechanisms 16 are arranged in a cross shape and move synchronously.

[0064] The automatic welding device 13 has the functions of height adjustment, position adjustment and welding head direction adjustment, so that the automatic welding device 13 can weld the upper end of each tube body 10 .

[0065] A support rod 18 is also installed at the upper end of the work station plate 5 , and an adjustment frame 19 is correspondingly arranged between the support rods 18 on both sides, and the automatic welding equipment 13 is correspondingly installed on the adjustment frame 19 .

[0066] The technical solution of this embodiment is based on the technical solution of Example 2, and the structural installation and position of the automatic welding equipment are set in detail; first, in the technical solutions of Example 1 and Example 2, the automatic welding equipment can be directly set above the workstation slot to weld the tube sheet and the tube body. The automatic welding equipment can be set as the welding equipment brought by the workers. After the positions of the tube sheet and the tube body are fixed, welding can be carried out directly; or it can be a completely separated mechanized automatic welding equipment with an automatic function. The height, degree of freedom, inclination, etc. can be automatically adjusted according to the height, which is also relatively easy to set up, and technicians in this field should be able to understand it.

[0067] However, the present embodiment sets the position of the automatic welding equipment in detail, that is, support rods are installed on both sides of the work station plate, and adjustment frames are set on the support rods, and the automatic link equipment is installed on the adjustment frames accordingly. Since the height of the work station plate itself needs to be adjusted according to the height of the welded pipe body, and in this device, since the upper adjustment frame is lifted and lowered as a whole, there is no need to set the height of the automatic welding equipment separately, and it can be lifted and lowered synchronously at any time, which is more convenient.

[0068] The above-mentioned specific implementation mode is only a preferred embodiment of the present invention and is not intended to limit the implementation of the present invention and the scope of the claims. All equivalent changes and modifications made according to the content of the patent protection scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A tube sheet automatic welding device, characterized in that: The invention comprises a base (1), a positioning groove (2) is arranged at the center of the base (1), and lifting mechanisms (3) are arranged on both sides of the base (1) respectively. The lifting rod (4) of the lifting mechanism (3) extends upward, and an integral work station plate (5) is installed at the end of the rod. An L-shaped work station groove (6) is arranged on the inner side of the work station groove (6), and a connecting groove (7) is arranged on the inner side of the work station groove (6), and the work station groove (6) and the connecting groove (7) both correspond to the position of the positioning groove (2) on the lower base (1); The size of the workstation groove (6) is correspondingly arranged to match the size of the tube sheet (8), the tube sheet (8) is correspondingly placed in the workstation groove (6), the edge of the tube sheet (8) is supported by the workstation groove (6), and the position of the connecting groove (7) is correspondingly arranged so that the tube holes (9) on the tube sheet (8) are all located in the area of ​​the connecting groove (7), and the tube bodies (10) to be welded inserted into the tube holes (9) are correspondingly extended downward from the position of the connecting groove (7); A replaceable positioning circular plate (11) is placed in the positioning groove (2) at the bottom, and a positioning convex column (12) is correspondingly arranged on the positioning circular plate (11). The arrangement position of the positioning convex column (12) corresponds to the position of the tube hole (9) on the upper tube plate (8), and the size of the positioning convex column (12) is adapted to the inner diameter size of the tube hole (9). After the tube body (10) in the tube hole (9) extends downward, the lower end portion is correspondingly mounted on the positioning convex column (12), so that the tube body (10) is fixed in a vertical position; An automatic welding device (13) is also provided above the work station plate (5). When the position of the tube body (10) in the tube hole (9) on the tube plate (8) is fixed, the tube body (10) is welded and fixed to the tube plate (8) at the upper end surface of the tube plate (8) by the automatic welding device (13), so as to maintain the verticality of the tube body (10).

2. The tube sheet automatic welding device according to claim 1 is characterized in that: The tube holes (9) on the tube plate (8) are all arranged in an annular shape, so that the positioning protrusions (12) on the positioning circular plate (11) are also arranged in an annular shape.

3. The tube sheet automatic welding device according to claim 2 is characterized in that: The depth of the positioning groove (2) is set accordingly so that the upper end surface of the positioning circular plate (11) protrudes from the positioning groove (2); the depth of the working position groove (6) is set accordingly so that the upper end surface of the tube plate (8) protrudes from the working position groove (6).

4. The tube sheet automatic welding device according to claim 3 is characterized in that: Vertical limiting grooves (14) and limiting blocks (15) are provided between the positioning circular plate (11) and the positioning groove (2) and between the tube plate (8) and the work position groove (6), so that the placement positions of the positioning circular plate (11) and the tube plate (8) are fixed, and the upper and lower positioning bosses (12) correspond to the positions of the tube holes (9).

5. The tube sheet automatic welding device according to claim 4 is characterized in that: A plurality of clamping mechanisms (16) are also arranged transversely on the work station plate (5), and a pressure block (17) is installed on the main shaft of the clamping mechanism (16). The pressure block (17) is correspondingly embedded in the work station plate (5). After the pressure block (17) is extended, it can be pressed on the side wall of the tube plate (8) to fix the tube plate (8).

6. The tube sheet automatic welding device according to claim 5 is characterized in that: A total of four clamping mechanisms (16) are provided, and the four clamping mechanisms (16) are cross-arranged and move synchronously.

7. The tube sheet automatic welding device according to claim 1 is characterized in that: The automatic welding device (13) has the functions of height adjustment, position adjustment and welding head direction adjustment, so that the automatic welding device (13) can weld the upper end of each pipe body (10).

8. The tube sheet automatic welding device according to claim 7 is characterized in that: A support rod (18) is also installed at the upper end of the work station plate (5), and an adjustment frame (19) is correspondingly arranged between the support rods (18) on both sides, and the automatic welding equipment (13) is correspondingly installed on the adjustment frame (19).

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