Quickly disassembled pipe welding nitrogen filling tool

Abstract

The utility model discloses a quick dismounting type pipeline welding nitrogen filling tool, including base, the top surface of base is fixed with both side plates to two sides, and is equipped with two support plates between two side plates, and two support plates are symmetrically connected in the top surface of base and slide, and the inside of support plate is connected with the clamping piece of rotation, and the outside of one side plate is connected with the lower groove body of slide, and the lower groove body is connected with the gas cylinder of lifting in, and the end of gas cylinder is connected with the sealing element, and the outer edge of sealing element is fixedly connected with the upper groove body, and the upper groove body is fixedly connected in the side of side plate, and the end of sealing element is connected with the conveying pipe, and the end of conveying pipe is fixedly connected with the guide block, and the guide block is fixedly connected between two side plates. The utility model discloses through the lower groove body sliding structure, bolt lifting adjusting structure cooperation split type gas cylinder mounting structure, can complete the disassembly of gas cylinder, nitrogen supplement and reset installation fast, greatly simplifies the operation process, shortens the dismounting time -consuming, effectively promotes the pipeline welding nitrogen filling operation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a quick-assembly and disassembly type nitrogen-filling tool for pipeline welding. Background Technology

[0002] In the petrochemical and natural gas transportation industries, the weld area is susceptible to intrusion of impurities such as oxygen and water vapor during pipeline welding, leading to defects such as porosity and slag inclusions. Nitrogen purging is a key process to prevent oxidation and improve weld quality, especially important in the welding of active metals such as stainless steel and titanium alloys.

[0003] In the existing technology, the nitrogen storage cylinder on the welding equipment is connected to the input end of the jet pipe by means of flange or bolt fixing. When the nitrogen in the storage cylinder is used up, multiple bolts need to be removed before the storage cylinder can be removed from the welding equipment, and then the nitrogen in the storage cylinder needs to be replenished. The process of disassembling and assembling the storage cylinder is quite troublesome. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a quick-assembly and disassembly nitrogen-filling tool for pipe welding.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick-assembly and disassembly type pipeline welding nitrogen filling fixture, comprising a base, two side plates symmetrically fixed on the top surface of the base, two support plates provided between the two side plates, the two support plates symmetrically and slidably connected to the top surface of the base, a clamping member rotatably connected to the inner side of the support plate, a lower groove body slidably connected to the outer side of one of the side plates, a gas storage cylinder being vertically connected to the lower groove body, a sealing member connected to the end of the gas storage cylinder, an upper groove body fixedly connected to the outer edge of the sealing member, the upper groove body being fixedly connected to the side of the side plate, a conveying pipe connected to the end of the sealing member, a guide block fixedly connected to the end of the conveying pipe, and the guide block being fixedly connected between the two side plates.

[0006] As a further description of the above technical solution: the clamping member includes a circular plate rotatably connected to the inner side of the support plate, two arc-shaped plates symmetrically slidably connected to the inner side of the circular plate, a support rod slidably sleeved between the two support plates, the support rod being horizontally fixed between the two side plates, a guide block being fixedly connected to the outer edge of the support rod, a first lead screw motor being horizontally fixed to the outer side of one of the side plates, the output end of the first lead screw motor being drivenly connected to a first lead screw, the end of the first lead screw being rotatably connected to the inner side of the other side plate, and the two support plates being threadedly sleeved on the outer edge of the first lead screw; by setting the clamping member, the two welded pipes are clamped and fixed.

[0007] As a further description of the above technical solution: the sealing element includes a connecting pipe fixed to the top surface of the gas cylinder, the top end of the connecting pipe abutting against a connector, an upper groove body fixedly connected to the top surface of the connector, a valve body fixedly connected to the top surface of the upper groove body, the valve body fixedly connected to the output end of the connector and the input end of the delivery pipe, a through hole provided on the top surface of the gas cylinder, a sealing plate slidably connected to the top wall of the gas cylinder, a sliding extrusion member on the bottom surface of the upper groove body, an air chamber provided inside the guide block, an air pump fixedly connected to the top surface of the guide block, an input end of the air pump fixedly connected to the output end of the delivery pipe, and a nozzle fixedly connected to the bottom surface of the guide block; the sealing performance between the gas cylinder and the connector is improved by setting the sealing element.

[0008] As a further description of the above technical solution: a plug block adapted to the through hole is fixedly connected to the center of the top surface of the sealing plate; multiple connecting rods are vertically fixed to the top surface of the sealing plate; multiple sleeves are vertically fixed to the top surface of the gas storage cylinder; the connecting rods slide through the gas storage cylinder and are slidably connected inside the sleeves; a lifting ring is fixedly connected to the end of the connecting rod; and the extrusion member abuts against the top surface of the lifting ring. By setting the lifting ring, the connection sealing between the joint and the top end of the gas storage cylinder connecting pipe is improved.

[0009] As a further description of the above technical solution: the inner wall of the sleeve is symmetrically provided with two first sliding grooves, a first slider is slidably connected in the first sliding groove, the first slider is fixedly connected to the connecting rod, and a first spring in a compressed state is fixed between the first slider and the inner wall of the first sliding groove. The top wall of the joint is vertically provided with a first blind hole, a first slide rod is slidably connected in the first blind hole, and the inner wall of the first blind hole is symmetrically provided with two second sliding grooves, a second slider is slidably connected in the second sliding groove, the second slider is fixedly connected to the first slide rod, and a second spring in a compressed state is fixed between the inner wall of the second sliding groove and the second slider. A sealing ring is fixedly connected to the end of the first slide rod, and the sealing ring abuts against the top surface of the connecting tube. By using the second spring for elastic connection of the lifting ring, the tightness of the fit between the lifting ring and the top surface of the connecting tube is improved.

[0010] As a further description of the above technical solution: the extrusion component includes a threaded groove formed on the bottom surface of the upper groove body, a pressure block is threadedly connected in the threaded groove, the pressure block abuts against the top surface of the lifting ring, a guide rod is vertically fixed on the top surface of the pressure block, the guide rod movably passes through the threaded groove, and a rotating block is fixedly connected to the end of the guide rod; by setting the extrusion component, it is convenient to open the gas storage cylinder after connecting it to the connector.

[0011] As a further description of the above technical solution: the side wall of the lower tank is symmetrically provided with two second blind holes, and a second sliding rod is slidably connected in the second blind hole. The second sliding rod is fixedly connected to the side plate. A threaded hole passes through the center of the bottom surface of the lower tank, and a bolt is threadedly connected in the threaded hole. The end of the bolt is rotatably connected to a support seat. The top surface of the support seat is provided with a groove, and the gas storage cylinder is placed in the groove. A guide post is vertically fixed to the bottom surface of the support seat. The guide post slides through the lower tank, and a limiting plate is fixedly connected to the end of the guide post. By sliding the lower tank to the outside of the side plate, it is convenient to remove the gas storage cylinder from the lower tank for nitrogen replenishment.

[0012] This utility model has the following beneficial effects: Compared with existing technologies, this quick-assembly and disassembly pipeline welding nitrogen filling fixture, through its lower tank sliding structure, bolt lifting and adjustment structure, and split gas cylinder installation structure, eliminates the cumbersome disassembly and assembly methods of traditional flanges and multi-bolt fixing. It can quickly complete the disassembly of the gas cylinder, nitrogen replenishment, and reinstallation, greatly simplifying the operation process, shortening the disassembly and assembly time, and effectively improving the efficiency of pipeline welding nitrogen filling operations. At the same time, the fixture's sealing and extrusion components, combined with multiple sets of elastic sealing structures, can achieve a tight fit and seal between the gas cylinder and the delivery pipeline, effectively preventing nitrogen leakage and the intrusion of external air and moisture into the weld area, eliminating defects such as welding porosity, slag inclusion, and oxidation, and ensuring the welding quality of stainless steel, titanium alloy, and other active metal pipelines. In addition, the adjustable clamping components can firmly clamp the pipeline to be welded, and the guiding gas delivery structure can achieve precise nitrogen filling. The equipment has strong overall operational stability and high adaptability, effectively solving the problems of inconvenient disassembly and assembly, poor sealing performance, and inadequate welding protection effect of traditional nitrogen filling fixtures. It is suitable for various pipeline welding nitrogen filling operation scenarios such as petrochemical and natural gas pipelines. Attached Figure Description

[0013] Figure 1 This is a three-dimensional view of the overall structure of a quick-assembly and disassembly type nitrogen-filling pipe welding fixture proposed in this utility model; Figure 2 This is a main sectional view of the overall structure of a quick-assembly and disassembly type nitrogen-filling pipe welding fixture proposed in this utility model; Figure 3 This is a main sectional view of the overall structure of the lower tank of a quick-assembly and disassembly type pipeline welding nitrogen filling tool proposed in this utility model. Figure 4 This utility model proposes a quick-assembly and disassembly nitrogen-filling fixture for pipe welding. Figure 3 Enlarged view of the structure at point A in the middle; Figure 5 This utility model proposes a quick-assembly and disassembly nitrogen-filling fixture for pipe welding. Figure 4 Enlarged view of the structure at point B; Figure 6 This utility model proposes a quick-assembly and disassembly nitrogen-filling fixture for pipe welding. Figure 4 Enlarged view of the structure at point C; Figure 7 A top sectional view showing the connection between the side plate and the lower tank of a quick-assembly and disassembly type pipeline welding nitrogen filling fixture proposed in this utility model. Figure 8 This is a side sectional view of the overall structure of the guide block of a quick-assembly and disassembly pipeline welding nitrogen filling tool proposed in this utility model.

[0014] Legend: 1. Base; 2. Side plate; 3. Support plate; 4. First lead screw; 5. First lead screw motor; 6. Lower groove; 7. Rotary block; 8. Upper groove; 9. Valve body; 10. Delivery pipe; 11. Support rod; 12. Air pump; 13. Guide block; 14. Nozzle; 15. Circular plate; 16. Arc plate; 17. Bolt; 18. Support seat; 19. Gas cylinder; 20. Sealing plate; 21. Pressure block; 22. Connector; 23. Lifting ring; 24. Connecting pipe; 25. Connecting rod; 26. Block; 27. Groove; 28. Guide post; 29. ​​Limiting plate; 30. Through hole; 31. Sleeve; 32. Threaded groove; 33. Guide rod; 34. Sealing ring; 35. First slide rod; 36. First blind hole; 37. Second slide rod; 38. Second blind hole; 39. Air chamber. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figures 1 to 8 This utility model provides a quick-assembly and disassembly type pipeline welding nitrogen filling fixture: including a base 1, two side plates 2 are symmetrically fixed on the top surface of the base 1, two support plates 3 are provided between the two side plates 2, the two support plates 3 are symmetrically slidably connected to the top surface of the base 1, the inner side of the support plate 3 is rotatably connected to a clamping component, the outer side of one of the side plates 2 is slidably connected to a lower groove 6, a gas storage cylinder 19 is lifted and connected inside the lower groove 6, the end of the gas storage cylinder 19 is connected to a sealing component, the outer edge of the sealing component is fixedly connected to an upper groove 8, the upper groove 8 is fixedly connected to the side of the side plate 2, the end of the sealing component is connected to a conveying pipe 10, the end of the conveying pipe 10 is fixedly connected to a guide block 13, and the guide block 13 is fixedly connected between the two side plates 2; The sealing component includes a connecting pipe 24 fixed to the top surface of the gas cylinder 19, the top end of the connecting pipe 24 abutting against the connector 22, the top surface of the connector 22 being fixedly connected to the upper tank 8, the top surface of the upper tank 8 being fixedly connected to the valve body 9, the valve body 9 being fixedly connected to the output end of the connector 22 and to the input end of the delivery pipe 10, the top surface of the gas cylinder 19 being provided with a through hole 30, the top wall of the gas cylinder 19 being slidably connected to a sealing plate 20, the bottom surface of the upper tank 8 being slidably extruded, the guide block 13 being provided with an air chamber 39, the top surface of the guide block 13 being fixedly connected to an air pump 12, the input end of the air pump 12 being fixedly connected to the output end of the delivery pipe 10, and the bottom surface of the guide block 13 being fixedly connected to a nozzle 14. A plug 26 adapted to the through hole 30 is fixedly connected to the center of the top surface of the sealing plate 20. Multiple connecting rods 25 are vertically fixed to the top surface of the sealing plate 20. Multiple sleeves 31 are vertically fixed to the top surface of the gas storage cylinder 19. The connecting rods 25 slide through the gas storage cylinder 19 and are slidably connected inside the sleeves 31. The end of the connecting rod 25 is fixedly connected to the lifting ring 23. The extrusion part abuts against the top surface of the lifting ring 23. Two first sliding grooves are symmetrically provided on the inner wall of the sleeve 31. A first slider is slidably connected in the first sliding groove. The first slider is fixedly connected to the connecting rod 25. A first spring in a compressed state is fixed between the first slider and the inner wall of the first sliding groove. A first blind hole 36 is vertically provided on the top wall of the connector 22. The first slide rod 35 is slidably connected. The inner wall of the first blind hole 36 is symmetrically provided with two second slide grooves. The second slide block is slidably connected in the second slide groove. The second slide block is fixedly connected to the first slide rod 35. The inner wall of the second slide groove and the second slide block are fixed together to fix the second spring in a compressed state. The end of the first slide rod 35 is fixedly connected to a sealing ring 34. The sealing ring 34 abuts against the top surface of the connecting pipe 24. The extrusion part includes a threaded groove 32 opened on the bottom surface of the upper groove body 8. The threaded groove 32 is threadedly connected to a pressure block 21. The pressure block 21 abuts against the top surface of the lifting ring 23. The top surface of the pressure block 21 is vertically fixed to a guide rod 33. The guide rod 33 movably passes through the threaded groove 32. The end of the guide rod 33 is fixedly connected to a rotating block 7. The side wall of the lower tank 6 is symmetrically provided with two second blind holes 38. The second slide rod 37 is slidably connected in the second blind hole 38. The second slide rod 37 is fixedly connected to the side plate 2. The bottom center of the lower tank 6 has a threaded hole. The threaded hole is connected with a bolt 17. The end of the bolt 17 is rotatably connected to a support seat 18. The top surface of the support seat 18 has a groove 27. The gas storage bottle 19 is placed in the groove 27. The bottom surface of the support seat 18 is vertically fixed with a guide post 28. The guide post 28 slides through the lower tank 6. The end of the guide post 28 is fixedly connected to a limiting plate 29. The clamping component includes a circular plate 15 rotatably connected to the inner side of the support plate 3. Two arc-shaped plates 16 are symmetrically slidably connected to the inner side of the circular plate 15. A support rod 11 is slidably sleeved between the two support plates 3. The support rod 11 is horizontally fixed between the two side plates 2. A guide block 13 is fixedly connected to the outer edge of the support rod 11. A first lead screw motor 5 is horizontally fixed to the outer side of one of the side plates 2. The output end of the first lead screw motor 5 is driven by a first lead screw 4. The end of the first lead screw 4 is rotatably connected to the inner side of the other side plate 2. The two support plates 3 are threaded onto the first... On the outer edge of the lead screw 4, a drive motor is embedded in the inner side of one of the side plates 2. The output end of the drive motor is connected to a rotating shaft. The rotating shaft rotates through the support plate 3 and is fixedly connected to one of the circular plates 15. A moving groove is provided radially on the inner side of the circular plate 15. A second lead screw motor is fixedly connected in the moving groove. The output end of the second lead screw motor is connected to the second lead screw. The end of the second lead screw is rotatably connected to the inner wall of the moving groove. Two moving blocks are symmetrically threaded on the outer edge of the second lead screw. The two moving blocks are symmetrically slidably connected in the moving groove. The moving blocks are fixedly connected to the arc-shaped plate.

[0017] By placing the gas cylinder 19 inside the lower tank 6 and sliding the lower tank 6 to the side of the side plate 2, and connecting the gas cylinder 19 to the nozzle 14 through a seal, it is easy to quickly remove the gas cylinder 19 from the welding equipment and replenish the gas cylinder 19 with nitrogen.

[0018] Working principle: In use, two pipes are placed between two pairs of arc-shaped plates 16. Then, the second lead screw motor drives the two arc-shaped plates 16 on the same circular plate 15 to move relative to each other, clamping and fixing the pipes. Then, the first lead screw motor 5 drives the two support plates 3 to move relative to each other through the first lead screw 4, so that the welding ends of the two pipes are in contact with each other. Then, the drive motor drives the pipes to rotate at a constant speed, and then the two pipes can be welded together. At the same time, the air pump 12 extracts the gas from the gas storage cylinder 19 and sprays it onto the welding joint of the pipes through the nozzle 14. Protect the welded joints of the pipeline. When the nitrogen in the gas cylinder 19 is depleted, first rotate the rotary block 7. The rotary block 7 drives the pressure block 21 away from the top surface of the lifting ring 23. At the same time, the first spring, which is in a compressed state, resets, causing the sealing plate 20 to move upward. Simultaneously, it drives the lifting ring 23 to rise, allowing the plug 26 to enter the through hole 30 and seal the gas cylinder 19. Then, close the valve body 9. Next, rotate the bolt 17. The bolt 17 drives the support seat 18 to descend. The support seat 18 drives the gas cylinder 19 to descend. The gas cylinder 19 drives the connecting pipe 24 to descend, causing the connecting rod to disengage. Inside the connector 22, the second spring, which is in a compressed state, resets. When the second spring resets, it drives the sealing ring 34 to descend until the connecting pipe 24 leaves the connector 22. Then, the lower tank 6 is pulled outward, and the gas cylinder 19 inside the lower tank 6 is removed. After the gas cylinder 19 is replenished with nitrogen, it is placed back into the groove 27 inside the lower tank 6. Then, the lower tank 6 is pushed towards the side plate 2, so that the lower tank 6 moves directly below the upper tank 8. Then, the bolt 17 is rotated, which drives the support base 18 upward, and the support base 18 drives the gas cylinder 19 upward. The valve body 9 is then opened. The rotating block 7 is rotated, which causes the pressure block 21 to rotate, causing the pressure block 21 to descend. The pressure block 21 causes the lifting ring 23 to descend, which in turn causes the sealing plate 20 to descend, causing the block 26 to leave the through hole 30. At the same time, the first spring is compressed, and the bottom surface of the rotating shaft lifting plate abuts against the top surface of the sleeve 31.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick-assembly and disassembly type nitrogen-filling fixture for pipe welding, comprising a base (1), characterized in that: The top surface of the base (1) is symmetrically fixed with two side plates (2), and two support plates (3) are provided between the two side plates (2). The two support plates (3) are symmetrically slidably connected to the top surface of the base (1). The inner side of the support plate (3) is rotatably connected to a clamping member. The outer side of one of the side plates (2) is slidably connected to a lower groove (6). The lower groove (6) is vertically connected to a gas storage cylinder (19). The end of the gas storage cylinder (19) is connected to a sealing member. The outer edge of the sealing member is fixedly connected to an upper groove (8). The upper groove (8) is fixedly connected to the side of the side plate (2). The end of the sealing member is connected to a conveying pipe (10). The end of the conveying pipe (10) is fixedly connected to a guide block (13). The guide block (13) is fixedly connected between the two side plates (2).

2. The quick-assembly and disassembly pipeline welding nitrogen purging fixture according to claim 1, characterized in that: The clamping component includes a circular plate (15) rotatably connected to the inner side of the support plate (3). Two arc-shaped plates (16) are symmetrically slidably connected to the inner side of the circular plate (15). A support rod (11) is slidably sleeved between the two support plates (3). The support rod (11) is horizontally fixed between the two side plates (2). The guide block (13) is fixedly connected to the outer edge of the support rod (11). A first lead screw motor (5) is horizontally fixed to the outer side of one of the side plates (2). The output end of the first lead screw motor (5) is driven to connect to the first lead screw (4). The end of the first lead screw (4) is rotatably connected to the inner side of the other side plate (2). The two support plates (3) are threaded onto the outer edge of the first lead screw (4).

3. The quick-assembly and disassembly nitrogen-filling fixture for pipeline welding according to claim 1, characterized in that: The sealing element includes a connecting pipe (24) fixed to the top surface of the gas cylinder (19), the top end of the connecting pipe (24) abutting against a connector (22), the top surface of the connector (22) being fixedly connected to an upper groove (8), the top surface of the upper groove (8) being fixedly connected to a valve body (9), the valve body (9) being fixedly connected to the output end of the connector (22) and to the input end of the delivery pipe (10), the top surface of the gas cylinder (19) having a through hole (30), the top wall of the gas cylinder (19) being slidably connected to a sealing plate (20), the bottom surface of the upper groove (8) having a sliding extrusion member, the guide block (13) having an air chamber (39), the top surface of the guide block (13) being fixedly connected to an air pump (12), the input end of the air pump (12) being fixedly connected to the output end of the delivery pipe (10), and the bottom surface of the guide block (13) being fixedly connected to a nozzle (14).

4. The quick-assembly and disassembly nitrogen-filling fixture for pipeline welding according to claim 3, characterized in that: The top surface of the sealing plate (20) is fixedly connected to a plug (26) that is compatible with the through hole (30). Multiple connecting rods (25) are vertically fixed to the top surface of the sealing plate (20). Multiple sleeves (31) are vertically fixed to the top surface of the gas storage cylinder (19). The connecting rod (25) slides through the gas storage cylinder (19) and is slidably connected inside the sleeve (31). The end of the connecting rod (25) is fixedly connected to a lifting ring (23). The extrusion abuts against the top surface of the lifting ring (23).

5. The quick-assembly and disassembly nitrogen-filling fixture for pipeline welding according to claim 4, characterized in that: The inner wall of the sleeve (31) is symmetrically provided with two first sliding grooves. A first slider is slidably connected in the first sliding groove. The first slider is fixedly connected to the connecting rod (25). A first spring in a compressed state is fixed between the first slider and the inner wall of the first sliding groove. The top wall of the joint (22) is vertically provided with a first blind hole (36). A first slide rod (35) is slidably connected in the first blind hole (36). The inner wall of the first blind hole (36) is symmetrically provided with two second sliding grooves. A second slider is slidably connected in the second sliding groove. The second slider is fixedly connected to the first slide rod (35). A second spring in a compressed state is fixed between the inner wall of the second sliding groove and the second slider. A sealing ring (34) is fixedly connected to the end of the first slide rod (35). The sealing ring (34) abuts against the top surface of the connecting tube (24).

6. The quick-assembly and disassembly nitrogen-filling fixture for pipeline welding according to claim 4, characterized in that: The extrusion component includes a threaded groove (32) formed on the bottom surface of the upper groove body (8), a pressure block (21) is threadedly connected in the threaded groove (32), the pressure block (21) abuts against the top surface of the lifting ring (23), a guide rod (33) is vertically fixed on the top surface of the pressure block (21), the guide rod (33) moves through the threaded groove (32), and a rotating block (7) is fixedly connected to the end of the guide rod (33).

7. The quick-assembly and disassembly nitrogen-filling fixture for pipeline welding according to claim 1, characterized in that: The lower tank (6) has two symmetrical second blind holes (38) on its side wall. A second slide rod (37) is slidably connected in the second blind hole (38). The second slide rod (37) is fixedly connected to the side plate (2). A threaded hole passes through the center of the bottom surface of the lower tank (6). A bolt (17) is threadedly connected in the threaded hole. The end of the bolt (17) is rotatably connected to a support seat (18). The top surface of the support seat (18) has a groove (27). The gas cylinder (19) is placed in the groove (27). A guide post (28) is vertically fixed to the bottom surface of the support seat (18). The guide post (28) slides through the lower tank (6). The end of the guide post (28) is fixedly connected to a limiting plate (29).

Images