A welding device for a metal lining tube and a metal lining gasket of a heat exchanger

Abstract

The present invention provides a welding device for a metal lining tube and a metal lining gasket in the technical field of heat exchange tube production and manufacturing. A hinge seat (3) is arranged on one side of a washer (1) of the welding device for the metal lining tube and the metal lining gasket of the heat exchanger and is connected to a hinge block (5) on one side of a cover ring (2) through a pin shaft I (7). One end of a screw rod (8) is movably installed in a groove I in the side surface of a buckle part I (4) through a pin shaft II (9). A groove II (10) is arranged on the side surface of a buckle part II (6). A nut (13) is screwed on the other end of the screw rod (8). A heat exchange tube clamping hole (11) penetrating through the washer (1) is arranged in the middle of the washer (1). The welding device for the metal lining tube and the metal lining gasket of the heat exchanger according to the present invention can reliably and quickly achieve reliable contact and positioning between the metal lining tube and the metal lining gasket, eliminate gaps, and achieve precise circumferential fillet welding without flipping the metal lining tube and the metal lining gasket, eliminating the danger during the flipping process.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchanger manufacturing, and more specifically, it relates to a welding device for a metal lining tube and a metal lining gasket of a heat exchanger. Background Art

[0002] During the production process of heat exchangers, the connection method of metal linings is mainly through welding, and the welding quality seriously affects the sealing performance and reliability of heat exchangers. The traditional method for metal linings is to first install the metal lining tube and the metal lining gasket on the heat exchanger fixing plate, and then perform welding. During the whole process, the fixing plate needs to be turned over twice. At the same time, due to the large size and weight of the fixing plate, the risk is very high during the turning-over process, and the production efficiency is low. In addition, due to the too large size of the heat exchanger fixing plate, the manufacturing difficulty is large and the manufacturing accuracy is low. Therefore, assembling and welding the metal lining depending on the fixing plate will result in low manufacturing accuracy of the metal lining, making it difficult to meet the design requirements. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: aiming at the deficiencies of the prior art, to provide a welding device for a metal lining tube and a metal lining gasket of a heat exchanger, which has a simple structure and is convenient to use. When welding the metal lining tube and the metal lining gasket, it can reliably and quickly achieve reliable contact and positioning between the metal lining tube and the metal lining gasket of the heat exchanger, eliminate gaps, and achieve precise inner hole welding. Moreover, through the setting of the device, one-side welding is realized to complete the positioning of the metal lining tube and the metal lining gasket, and then it can be disassembled and welded. There is no need to turn over the heat exchanger fixing plate, eliminating the danger during the turning-over process and improving the welding efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] The present invention is a welding device for a metal lining tube and a metal lining gasket of a heat exchanger. The welding device for a metal lining tube and a metal lining gasket of the heat exchanger includes a washer and a cover ring. A hinge seat is arranged on one side of the washer, and a clamping part I is arranged on the other side of the washer. A hinge block is arranged on one side of the cover ring, and a clamping part II is arranged on the other side of the cover ring. The hinge block is movably clamped in the hinge seat, and the hinge block and the hinge seat are connected by a pin I. One end of a screw rod is movably installed in a groove I on the side of the clamping part I through a pin II. A groove II is arranged on the side of the clamping part II, and a nut is screwed on the other end of the screw rod. A metal lining tube clamping hole penetrating the washer is arranged in the middle of the washer, and a metal lining gasket clamping groove is also arranged on the side of the washer close to the cover ring.

[0006] When the welding device for a metal lining tube and a metal lining gasket of the heat exchanger welds the metal lining tube and the metal lining gasket, the metal lining tube is configured to be able to be clamped in the metal lining tube clamping hole of the washer, and the metal lining gasket is configured to be able to fit in the metal lining gasket clamping groove of the washer.

[0007] When the described cover ring is attached to the washer by the hinge block rotating relative to the hinge seat of the washer, the screw is configured to be rotatable and then snap - fitted into groove II. When the screw is snap - fitted into groove II, the nut is configured to be screwed and fitted against the front part of the snap - fitting part II.

[0008] Before the described cover ring is separated from the washer by the hinge block rotating relative to the hinge seat of the washer, the screw is configured to be rotatable and then move out of groove II. Before the screw rotates and moves out of groove II, the nut is configured to be screwed and move away from the front part of the snap - fitting part II.

[0009] When the cover ring of the welding device for the metal lining pipe and metal lining gasket of the described heat exchanger is attached to the washer by the hinge block rotating relative to the hinge seat of the washer, the welding end of the metal lining pipe clamped in the metal lining pipe clamping hole of the washer is configured to be able to fit together with the metal lining gasket fitted in the metal lining gasket clamping groove of the washer.

[0010] A metal lining pipe positioning screw is screwed onto the described washer, and the metal lining pipe positioning screw is configured to be able to extend into or out of the metal lining pipe clamping hole.

[0011] The hinge seat and the snap - fitting part I on the washer are arranged at 180°. The hinge block and the snap - fitting part II on the cover ring are arranged at 180°.

[0012] When the screw is snap - fitted into groove II and the nut is screwed and fitted against the front part of the snap - fitting part II, the cover ring is configured to be able to fit on the metal lining gasket.

[0013] When the cover ring is fitted on the metal lining gasket, the end of the metal lining pipe located in the metal lining pipe clamping hole is configured to be able to fit on the metal lining gasket located in the metal lining gasket clamping groove.

[0014] Adopting the technical solution of the present invention can obtain the following beneficial effects:

[0015] The welding device for the metal lining pipe and the metal lining gasket of the heat exchanger described in the present invention can achieve the movable connection on one side of the washer and the cover ring through the connection of the hinge seat and the hinge block, enabling the cover ring and the washer to rotate relative to each other. When welding the metal lining pipe and the metal lining gasket, insert one end of the metal lining pipe to be welded into the washer. Then, place the metal lining gasket into the washer, and the metal lining gasket fits against the end of the metal lining pipe to be welded, and the two are reliably fitted together. Then, rotate the cover plate so that the cover plate fits against the washer. Then, rotate the screw so that the screw extends into the groove II, and then screw on a nut and tighten the nut so that the nut fits and fixes the cover ring and the washer together. Through the fixation of the washer and the cover ring, the positioning of the metal lining pipe and the metal lining gasket is achieved, facilitating subsequent welding. At this time, weld one side of the metal lining pipe and the metal lining gasket. After welding, loosen the nut and rotate the screw out of the groove II to separate the cover ring and the washer. Then, take out the connected metal lining pipe and metal lining gasket, and weld the other side of the metal lining pipe and the metal lining gasket. Through the welding device for the metal lining pipe and the metal lining gasket of the heat exchanger of the present invention, which is designed for the metal lining pipe and the metal lining gasket to be welded. On the one hand, it can quickly, conveniently and reliably achieve the positioning and assembly of the metal lining pipe and the metal lining gasket, making the two fit together reliably without gaps, and achieving welding reliability. On the other hand, the welding device can be conveniently and quickly disassembled. When welding the metal lining pipe and the metal lining gasket, welding can be achieved on one side, and without flipping, welding on the other side can be achieved, eliminating the danger of reversing the workpiece and effectively improving the welding efficiency. The welding device for the metal lining pipe and the metal lining gasket of the heat exchanger described in the present invention has a simple structure and is convenient to use. When welding the metal lining pipe and the metal lining gasket, it can reliably and quickly achieve the reliable contact and positioning between the welding end of the metal lining pipe and the metal lining gasket, eliminate gaps, and achieve precise circumferential fillet welding. Moreover, through the setting of the device, welding on one side is completed to position the metal lining pipe and the metal lining gasket, and then it can be disassembled and welded without flipping the metal lining pipe and the metal lining gasket, eliminating the danger during the flipping process and improving the welding efficiency of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following briefly describes the content expressed by each drawing in this specification and the marks in the drawings:

[0017] Figure 1 is a schematic structural diagram of the welding device for the metal lining pipe and the metal lining gasket of the heat exchanger described in the present invention;

[0018] Figure 2 is a front view structural schematic diagram of the welding device for the metal lining pipe and the metal lining gasket of the heat exchanger described in the present invention;

[0019] Figure 3Schematic top view structure diagram of the welding device for the metal lining tube and the metal lining gasket of the heat exchanger described in the present invention;

[0020] Figure 4 Schematic left view structure diagram of the welding device for the metal lining tube and the metal lining gasket of the heat exchanger described in the present invention;

[0021] The labels in the drawings are respectively: 1, washer; 2, cover ring; 3, hinge seat; 4, buckle part I; 5, hinge block; 6, buckle part II; 7, pin shaft I; 8, screw; 9, pin shaft II; 10, groove II; 11, metal lining tube clamping hole; 12, metal lining gasket clamping groove; 13, nut. Detailed implementation manners

[0022] The following is a further detailed description of the specific implementation manners of the present invention, such as the shapes, structures of the various components involved, the mutual positions and connection relationships between the various parts, the functions of the various parts, and the working principles, etc., with reference to the drawings:

[0023] As shown in the attached Figure 1 - Attached Figure 4As shown in the figure, the present invention is a welding device for a metal lining tube and a metal lining gasket of a heat exchanger. The welding device for the metal lining tube and the metal lining gasket of the heat exchanger includes a washer 1 and a cover ring 2. A hinge seat 3 is provided on one side of the washer 1, and a buckle part I 4 is provided on the other side of the washer 1. A hinge block 5 is provided on one side of the cover ring 2, and a buckle part II 6 is provided on the other side of the cover ring 2. The hinge block 5 is movably clamped in the hinge seat 3, and the hinge block 5 and the hinge seat 3 are connected by a pin shaft I 7. One end of a screw rod 8 is movably installed in a groove I on the side of the buckle part I 4 through a pin shaft II 9. A groove II 10 is provided on the side of the buckle part II 6. A nut 13 is screwed on the other end of the screw rod 8. A metal lining tube clamping hole 11 penetrating the washer 1 is provided in the middle of the washer 1. A metal lining gasket clamping groove 12 is further provided on the side of the washer 1 close to the cover ring 2. With the above structure, through the connection of the hinge seat and the hinge block, the movable connection of one side of the washer and the cover ring can be realized, so that the cover ring and the washer can rotate relative to each other. When welding the metal lining tube and the metal lining gasket, one end of the metal lining tube to be welded is inserted into the washer, and then the metal lining gasket is placed in the washer. The metal lining gasket is attached to the end to be welded of the metal lining tube, and the two are reliably attached together. Then, rotate the cover plate so that the cover plate fits with the washer. Then, rotate the screw rod 8 so that the screw rod 8 extends into the groove II 10, and then screw the nut 13 on the screw rod 8. Tighten the nut 13 so that the nut 13 fits and fixes the cover ring 2 and the washer 1 together. Through the fixation of the washer 1 and the cover ring 2, the positioning of the metal lining tube and the metal lining gasket is realized, which is convenient for subsequent reliable welding of the two. At this time, the metal lining tube and one side of the metal lining gasket are welded by the internal hole welding method. After welding, loosen the nut 13 and rotate the screw rod 8 away from the groove II 10, and the cover ring and the washer can be separated. Then, take out the metal lining tube and the metal lining gasket connected together and weld the other side of the metal lining tube and the metal lining gasket. The welding device for the metal lining tube and the metal lining gasket of the heat exchanger of the present invention is designed for the metal lining tube and the metal lining gasket that need to be welded with a circular fillet weld. On the one hand, it can conveniently and reliably realize the positioning of the metal lining tube and the metal lining gasket, so that the two are reliably attached together without gaps, realizing the welding reliability. On the other hand, the welding device can be conveniently and quickly disassembled. When welding the metal lining tube and the metal lining gasket, welding on one side can be realized, and welding on the other side can be realized without flipping, eliminating the danger of flipping the workpiece and effectively improving the welding efficiency.The welding device for the metal lining pipe and the metal lining gasket of the heat exchanger described in the present invention has a simple structure and is convenient to use. When welding the metal lining pipe and the metal lining gasket, it can reliably and quickly achieve reliable contact and positioning between the welding end of the metal lining pipe and the metal lining gasket, eliminate the gap, and achieve precise inner hole welding. Moreover, through the setting of the device, one-sided welding is realized to complete the positioning of the metal lining pipe and the metal lining gasket, and then it can be disassembled and welded. There is no need to flip the metal lining pipe and the metal lining gasket, eliminating the danger during the flipping process and improving the welding efficiency.

[0024] When the welding device for the metal lining pipe and the metal lining gasket of the heat exchanger welds the metal lining pipe and the metal lining gasket, the metal lining pipe is configured to be able to be clamped in the metal lining pipe clamping hole 11 of the washer 1, and the metal lining gasket is configured to be able to fit in the metal lining gasket clamping groove 12 of the washer 1. In the above structure, the metal lining pipe clamping hole 11 is a circular hole structure, and the diameter of the metal lining pipe clamping hole 11 is basically the same as the diameter of the metal lining pipe to be welded. When the metal lining pipe is clamped in the metal lining pipe clamping hole 11, clamping is achieved, and it will not fall off or relatively slide under normal external forces, ensuring that the metal lining pipe can reliably fit with the metal lining gasket when clamped in the metal lining pipe clamping hole 11 and avoiding the generation of gaps due to movement during the welding process.

[0025] When the cover ring 2 is attached to the washer 1 by rotating the hinge block 5 relative to the hinge seat 3 of the washer 1, the screw 8 is configured to be able to rotate and then be clamped into the groove II 10. When the screw 8 is clamped into the groove II 10, the nut 13 is configured to be able to be screwed and attached to the front part of the buckle part II 6. In the above structure, the cover ring and the washer are reliably clamped through the screw and the nut, so that the metal lining gasket is reliably clamped between the cover ring and the washer and fits reliably with the metal lining pipe.

[0026] Before the cover ring 2 is separated from the washer 1 by rotating the hinge block 5 relative to the hinge seat 3 of the washer 1, the screw 8 is configured to be able to rotate and then leave the groove II 10. Before the screw 8 rotates and leaves the groove II 10, the nut 13 is configured to be able to be screwed away from the front part of the buckle part II 6. In the above structure, after loosening the nut, the screw can rotate relative to the washer, so that the screw leaves the groove II 10, and the cover ring can be separated from the washer, and the welding device can be disassembled. In this way, the welding device is not only convenient to install and use, but also quite convenient to disassemble.

[0027] When the cover ring 2 of the welding device for the metal lining tube and the metal lining gasket of the heat exchanger is in contact with the gasket 1 by rotating relative to the hinge seat 3 of the gasket 1 through the hinge block 5, the welding end of the metal lining tube clamped in the metal lining tube clamping hole 11 of the gasket 1 is arranged to be able to be in contact with the metal lining gasket fitted in the metal lining gasket clamping groove 12 of the gasket 1. With the above structure, after the cover ring and the gasket are fitted and connected, the positioning of the metal lining gasket and the end of the metal lining tube is realized, ensuring reliable contact and guaranteeing the subsequent welding quality.

[0028] A metal lining tube positioning screw is screwed onto the gasket 1 described above, and the positioning screw is arranged to be able to extend into or out of the metal lining tube clamping hole 11. With the above structure, when the metal lining tube is clamped in the metal lining tube clamping hole 11, the positioning screw applies a perpendicular external force to the surface of the metal lining tube, realizing the positioning of the relative position between the metal lining tube and the gasket and avoiding displacement when stressed. After the cover ring and the gasket are connected, the metal lining tube and the metal lining gasket can always be reliably positioned and in contact.

[0029] The hinge seat 3 and the buckle part I 4 on the gasket 1 are arranged at 180°. The hinge block 5 and the buckle part II 6 on the cover ring 2 are arranged at 180°. With the above structure, the hinge seat 3 and the buckle part I 4 on the gasket 1 are respectively welded to the gasket, and the hinge block 5 and the buckle part II 6 on the cover ring 2 are respectively welded to the cover ring. In this way, the two can be movably connected, making it convenient to use.

[0030] When the screw 8 is clamped into the groove II 10 and the nut 13 is screwed and fitted to the front of the buckle part II 6, the cover ring 2 is arranged to be able to fit on the metal lining gasket. When the cover ring 2 fits on the metal lining gasket, the end of the metal lining tube located in the metal lining tube clamping hole 11 is arranged to be able to fit on the metal lining gasket located in the metal lining gasket clamping groove 12. With the above structure, when welding the metal lining tube and the metal lining gasket, it can effectively ensure their reliable fitting and positioning, effectively improving the welding quality.

[0031] The welding device for the metal lining tube and the metal lining gasket of the heat exchanger according to the present invention can achieve the movable connection on one side of the washer and the cover ring through the connection of the hinge seat and the hinge block, so that the cover ring and the washer can rotate relative to each other. When welding the metal lining tube and the metal lining gasket, one end of the metal lining tube to be welded is inserted into the washer, and then the metal lining gasket is placed into the washer. The metal lining gasket fits against the end of the metal lining tube to be welded, and the two are reliably fitted together. Then, the cover plate is rotated so that the cover plate fits against the washer. Then, the screw rod is rotated so that the screw rod extends into the groove II, and then a nut is screwed onto the screw rod. The nut is tightened so that the nut fits and fixes the cover ring and the washer together. Through the fixation of the washer and the cover ring, the positioning of the metal lining tube and the metal lining gasket is achieved, facilitating subsequent welding. At this time, the metal lining tube and one side of the metal lining gasket are welded by means of a circumferential fillet weld. After welding, the nut is loosened, and the screw rod is rotated away from the groove II, so that the cover ring and the washer can be separated. Then, the connected metal lining tube and metal lining gasket are taken out, and the other side of the metal lining tube and the metal lining gasket is welded. The welding device for the metal lining tube and the metal lining gasket of the heat exchanger according to the present invention is designed for metal lining tubes and metal lining gaskets that require circumferential fillet welds. On the one hand, it can conveniently and reliably achieve the positioning of the metal lining tube and the metal lining gasket, making the two reliably fit together without gaps, and achieving welding reliability. On the other hand, the welding device can be conveniently and quickly disassembled. When welding the metal lining tube and the metal lining gasket, welding on one side can be achieved, and welding on the other side can be achieved without flipping, eliminating the danger of flipping the workpiece and effectively improving the welding efficiency. The welding device for the metal lining tube and the metal lining gasket of the heat exchanger according to the present invention has a simple structure and is convenient to use. When welding the metal lining tube and the metal lining gasket, it can reliably and quickly achieve the reliable contact and positioning between the welding end of the metal lining tube and the metal lining gasket, eliminate gaps, and achieve precise circumferential fillet welds. Moreover, through the setting of the device, welding on one side is achieved to complete the positioning of the metal lining tube and the metal lining gasket, and then it can be disassembled and welded. It is not necessary to flip the metal lining tube and the metal lining gasket, eliminating the danger during the flipping process and improving the welding efficiency of the workpiece.

[0032] The present invention has been described exemplarily above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various improvements are made by adopting the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A welding device for a metal lining tube and a metal lining gasket of a heat exchanger, characterized in that: The welding device for the metal liner tube and the metal liner sheet of the heat exchanger includes a washer (1) and a cover ring (2). A hinge seat (3) is arranged on one side of the washer (1), and a clamping part I (4) is arranged on the other side of the washer (1). A hinge block (5) is arranged on one side of the cover ring (2), and a clamping part II (6) is arranged on the other side of the cover ring (2). The hinge block (5) is movably clamped in the hinge seat (3), and the hinge block (5) and the hinge seat (3) are connected by a pin shaft I (7). One end of a screw rod (8) is movably installed in a groove I on the side of the clamping part I (4) through a pin shaft II (9). A groove II (10) is arranged on the side of the clamping part II (6). A nut (13) is screwed on the other end of the screw rod (8). A metal liner tube clamping hole (11) penetrating the washer (1) is arranged in the middle of the washer (1). A metal liner sheet slot (12) is also arranged on one side of the washer (1) close to the cover ring (2). When the cover ring (2) is attached to the washer (1) by rotating the hinge block (5) of the cover ring (2) relative to the hinge seat (3) of the washer (1), the screw rod (8) is configured to be able to rotate and then be clamped in the groove II (10). When the screw rod (8) is clamped in the groove II (10), the nut (13) is configured to be able to be screwed and attached to the front part of the clamping part II (6). A metal liner tube positioning screw rod is screwed on the washer (1), and the metal liner tube positioning screw rod is configured to be able to extend into or out of the metal liner tube clamping hole (11). The hinge seat (3) and the clamping part I (4) on the washer (1) are arranged at 180°, and the hinge block (5) and the clamping part II (6) on the cover ring (2) are arranged at 180°.

2. The welding device for a metal lining tube and a metal lining gasket of a heat exchanger according to claim 1, characterized in that: When welding the metal liner tube and the metal liner sheet, the metal liner tube is configured to be able to be clamped in the metal liner tube clamping hole (11) of the washer (1), and the metal liner sheet is configured to be able to be attached in the liner sheet slot (12) of the washer (1).

3. The welding device for a metal lining tube and a metal lining gasket of a heat exchanger according to claim 1, characterized in that: Before the cover ring (2) is separated from the washer (1) by rotating the hinge block (5) of the cover ring (2) relative to the hinge seat (3) of the washer (1), the screw rod (8) is configured to be able to rotate and then leave the groove II (10). Before the screw rod (8) rotates and leaves the groove II (10), the nut (13) is configured to be able to be screwed away from the front part of the clamping part II (6).

4. The welding device for a metal lining tube and a metal lining gasket of a heat exchanger according to claim 1, characterized in that: When the cover ring (2) of the welding device for the metal liner tube and the metal liner sheet of the heat exchanger is attached to the washer (1) by rotating the hinge block (5) relative to the hinge seat (3) of the washer (1), the welding end of the metal liner tube clamped in the metal liner tube clamping hole (11) of the washer (1) is configured to be able to be attached to the metal liner sheet attached in the metal liner sheet slot (12) of the washer (1).

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