Shell-and-tube heat exchanger welding tool

Abstract

The utility model provides a shell-and-tube heat exchanger welding tool, and relates to the technical field of heat exchanger welding tools, the shell-and-tube heat exchanger welding tool comprises a fixed platform which is sleeved outside a tube plate, the back of the fixed platform is provided with a locking piece which is matched with the back of the tube plate, and a welding head is movably mounted on a welding assembly. According to the heat exchange device, the heat exchange tube is inserted into the back of the tube plate, then the tube plate is stably sleeved with the fixing platform, the supporting rod can be driven to rotate in the front end of the fixing platform through the electric gear discs at the two ends of the supporting rod, and the linear motor can move on the supporting rod; the electric hydraulic rod can drive the welding head to stretch forwards and retract, the welding head can flexibly move on the face of the tube plate, multi-angle welding can be carried out, after a single heat exchange tube is welded, welding of a next heat exchange tube can be carried out, coherent multi-angle welding can be carried out, mounting and dismounting are very easy and convenient, and the welding efficiency is improved. And automatic welding can be carried out.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchanger welding tooling, and in particular to a shell and tube heat exchanger welding tooling. Background Art

[0002] A shell-and-tube heat exchanger, also known as a tubular heat exchanger, consists of a shell, heat transfer tube bundles, tube sheets, baffles (or baffles), and a tube box. The shell is typically cylindrical, housing the tube bundle, which is secured to the tube sheet at both ends. The two fluids involved in the heat exchange are: one flows inside the tubes, known as the tube-side fluid; the other flows outside the tubes, known as the shell-side fluid.

[0003] The existing shell and tube heat exchanger pipes are welded by manual welding, which not only tests the skills of the welding master, but also easily causes the welding to be incomplete and the welding to be missing. The welding quality cannot be guaranteed, so there are deficiencies. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a shell and tube heat exchanger welding tool, which aims to improve the existing shell and tube heat exchanger pipe welding, which adopts manual welding method, not only tests the skills of the welding master, but also easily causes the welding to be incomplete and there will be a lack of welding, and the welding quality cannot be guaranteed.

[0005] This application is implemented as follows:

[0006] The present application provides a shell and tube heat exchanger welding tool comprising:

[0007] A fixed platform, the fixed platform is sleeved on the outside of the tube plate, and a locking piece is provided on the back of the fixed platform to cooperate with the back of the tube plate;

[0008] Welded pipe fittings, the welded pipe fittings comprising heat exchange tubes, the heat exchange tubes being plugged and arranged at the back of the tube sheet;

[0009] A welding assembly is rotatably mounted in the fixed platform, the welding assembly is arranged on the face of the tube plate, and a welding head is movably mounted on the welding assembly.

[0010] In one embodiment of the present application, a gear ring is provided on the inner wall of the face of the fixed platform.

[0011] In one embodiment of the present application, a threaded hole cooperating with the locking member is provided on the back of the fixing platform.

[0012] In one embodiment of the present application, the locking member includes a fixing bolt and a limiting plate, the front end of the fixing bolt is threadedly installed in the threaded hole, the middle part of the fixing bolt is fixedly connected with a clamping block, and the limiting plate is sleeved on the front end of the fixing bolt.

[0013] In one embodiment of the present application, the front side of the limiting plate abuts against the back of the fixed platform, and the back of the limiting plate abuts against the blocking block.

[0014] In one embodiment of the present application, a notch is formed at the outer end of the fixing bolt.

[0015] In one embodiment of the present application, a socket is provided on the back of the through hole of the tube plate.

[0016] In one embodiment of the present application, a plug is fixedly connected to the front end of the heat exchange tube, the plug is sleeved on the outside of the front end of the heat exchange tube, and the plug is plugged into the socket.

[0017] In one embodiment of the present application, an exhaust hole is opened on the plug.

[0018] In one embodiment of the present application, the welding assembly includes a support rod, a linear motor and an electric hydraulic rod, and electric gear plates are rotatably installed at both ends of the support rod. The electric gear plates are arranged in cooperation with the gear ring, and a guide rail is provided on the outside of the support rod. The linear motor is installed on the guide rail of the support rod, the tail end of the electric hydraulic rod is fixedly connected to the side wall of the linear motor, and the front end of the output shaft of the electric hydraulic rod is fixedly connected to the welding head.

[0019] The beneficial effects of the present application are as follows: the heat exchange tube is inserted into the back of the tube sheet, and then the fixed platform is stably sleeved on the outside of the tube sheet. The electric gear plates at both ends of the support rod can drive the support rod to rotate in the front end of the fixed platform, and the linear motor can move on the support rod. The electric hydraulic rod can drive the welding head to extend and retract, so that the welding head can be flexibly moved on the face of the tube sheet, and multi-angle welding can be performed. After welding a single heat exchange tube, the next heat exchange tube can be welded, and continuous multi-angle welding can be performed. The installation and disassembly are very simple, and automatic welding can be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A structural diagram of a fixed platform is provided for the embodiment of this application;

[0022] Figure 2 A schematic structural diagram of a welding assembly is provided for an embodiment of the present application;

[0023] Figure 3 A structural diagram of a fixed platform is provided for the embodiment of this application;

[0024] Figure 4 A schematic structural diagram of a support rod is provided for an embodiment of the present application;

[0025] Figure 5 A schematic diagram of the structure of a tube sheet is provided for an embodiment of the present application;

[0026] Figure 6 A schematic structural diagram of a heat exchange tube is provided for an embodiment of the present application.

[0027] In the figure: 1. Fixed platform; 2. Tube sheet; 3. Welding pipe fittings; 4. Welding assembly; 5. Gear ring; 6. Threaded hole; 7. Fixing bolt; 8. Limit plate; 9. Notch; 10. Support rod; 11. Electric gear plate; 12. Linear motor; 13. Electric hydraulic rod; 14. Welding head; 15. Jack; 16. Heat exchange tube; 17. Plug; 18. Exhaust hole. DETAILED DESCRIPTION

[0028] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0029] like Figures 1-6 As shown, a shell and tube heat exchanger welding tool according to an embodiment of the present application includes:

[0030] The fixed platform 1 is sleeved on the outside of the tube sheet 2, and a locking piece is provided on the back of the fixed platform 1 to cooperate with the back of the tube sheet 2;

[0031] The welded pipe fitting 3 includes a heat exchange tube 16, and the heat exchange tube 16 is plugged and arranged at the back of the tube sheet 2;

[0032] The welding assembly 4 is rotatably mounted in the fixed platform 1 and is arranged on the surface of the tube sheet 2. A welding head 14 is movably mounted on the welding assembly 4. The welding head 14 can rotate at the front end of the electric hydraulic rod 13, thereby enabling 360° rotary welding.

[0033] like Figure 1-Figure 3 As shown, a gear ring 5 is provided on the inner wall of the face of the fixed platform 1 .

[0034] Furthermore, a threaded hole 6 is provided on the back of the fixing platform 1 to cooperate with the locking member.

[0035] like Figure 3 As shown, the locking member includes a fixing bolt 7 and a limiting plate 8. The front end of the fixing bolt 7 is threadedly installed in the threaded hole 6. A clamping block is fixedly connected to the middle of the fixing bolt 7. The limiting plate 8 is sleeved on the front end of the fixing bolt 7.

[0036] Furthermore, the front side of the limiting plate 8 abuts against the back of the fixed platform 1 , and the back of the limiting plate 8 abuts against the clamping block.

[0037] Furthermore, a notch 9 is provided at the outer end of the fixing bolt 7 to facilitate the rotation of the fixing bolt 7. The fixing platform 1 is first sleeved on the outside of the tube sheet 2, and then the fixing bolt 7 and the limit plate 8 are matched so that the fixing bolt 7 is stably threaded and installed on the back of the fixing platform 1, so that the fixing platform 1 is stably sleeved on the outside of the tube sheet 2.

[0038] like Figure 5 As shown, an insertion hole 15 is opened at the back of the through hole of the tube plate 2.

[0039] like Figure 5-Figure 6 As shown, the front end of the heat exchange tube 16 is fixedly connected to a plug 17, which is sleeved on the outside of the front end of the heat exchange tube 16. The plug 17 is plugged into the socket 15. By directly inserting the plug 17 at the end of the heat exchange tube 16 into the socket 15 on the back of the tube sheet 2, the heat exchange tube 16 can be stably fitted to the tube sheet 2. The plug 17 is not completely inserted into the socket 15, and the length of the plug 17 is greater than the depth of the socket 15.

[0040] Furthermore, an exhaust hole 18 is opened on the plug 17, and the exhaust hole 18 is connected to the required welding shielding gas, thereby facilitating welding.

[0041] like Figure 2-Figure 4As shown, the welding assembly 4 includes a support rod 10, a linear motor 12 and an electric hydraulic rod 13. Electric gear plates 11 are rotatably installed at both ends of the support rod 10. The electric gear plates 11 are arranged in conjunction with the gear ring 5. A guide rail is provided on the outside of the support rod 10, and the linear motor 12 is installed on the guide rail of the support rod 10. The tail end of the electric hydraulic rod 13 is fixedly connected to the side wall of the linear motor 12, and the front end of the output shaft of the electric hydraulic rod 13 is fixedly connected to the welding head 14. The electric gear plates 11 at both ends of the support rod 10 can drive the support rod 10 to rotate within the front end of the fixed platform 1, and the linear motor 12 can move on the support rod 10, and the electric hydraulic rod 13 can drive the welding head 14 to extend and retract, so that the welding head 14 can be flexibly moved on the face of the tube sheet 2, and multi-angle welding can be performed. After welding a single heat exchange tube 16, the next heat exchange tube 16 can be welded.

[0042] The above are merely examples of the present application and are not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application should be included within the scope of protection of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A shell and tube heat exchanger welding tool, characterized in that: include: A fixed platform (1), the fixed platform (1) being sleeved on the outside of the tube sheet (2), and a locking piece being provided on the back of the fixed platform (1) and cooperating with the back of the tube sheet (2); A welded pipe fitting (3), the welded pipe fitting (3) comprising a heat exchange tube (16), the heat exchange tube (16) being inserted and arranged at the back of the tube sheet (2); A welding assembly (4) is rotatably mounted in the fixed platform (1), the welding assembly (4) is arranged on the face of the tube sheet (2), and a welding head (14) is movably mounted on the welding assembly (4).

2. The shell and tube heat exchanger welding tool according to claim 1, characterized in that: The inner wall of the face of the fixed platform (1) is provided with a gear ring (5).

3. The shell and tube heat exchanger welding tool according to claim 2, characterized in that: A threaded hole (6) cooperating with the locking member is provided on the back of the fixing platform (1).

4. The shell and tube heat exchanger welding tool according to claim 3, characterized in that: The locking member comprises a fixing bolt (7) and a limiting plate (8); the front end of the fixing bolt (7) is threadedly installed in the threaded hole (6); a clamping block is fixedly connected to the middle of the fixing bolt (7); and the limiting plate (8) is sleeved on the front end of the fixing bolt (7).

5. The shell and tube heat exchanger welding tool according to claim 4, characterized in that: The front side of the limiting plate (8) abuts against the back of the fixed platform (1), and the back of the limiting plate (8) abuts against the clamping block.

6. The shell and tube heat exchanger welding tool according to claim 5, characterized in that: A notch (9) is formed at the outer end of the fixing bolt (7).

7. The shell and tube heat exchanger welding tool according to claim 6, characterized in that: An inserting hole (15) is provided on the back of the through hole of the tube plate (2).

8. The shell and tube heat exchanger welding tool according to claim 7, characterized in that: The front end of the heat exchange tube (16) is fixedly connected with a plug (17), the plug (17) is sleeved on the outside of the front end of the heat exchange tube (16), and the plug (17) is plugged into the socket (15).

9. The shell and tube heat exchanger welding tool according to claim 8, characterized in that: An exhaust hole (18) is opened on the plug (17).

10. The shell and tube heat exchanger welding tool according to claim 9, characterized in that: The welding assembly (4) comprises a support rod (10), a linear motor (12) and an electric hydraulic rod (13); both ends of the support rod (10) are rotatably mounted with electric gear plates (11); the electric gear plates (11) are arranged in cooperation with the gear ring (5); a guide rail is arranged outside the support rod (10); the linear motor (12) is mounted on the guide rail of the support rod (10); the tail end of the electric hydraulic rod (13) is fixedly connected to the side wall of the linear motor (12); and the front end of the output shaft of the electric hydraulic rod (13) is fixedly connected to the welding head (14).

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