Argon filling sealing device for high-temperature-resistant pipeline

Abstract

The utility model discloses a high temperature resistant pipeline argon filling sealing device, which relates to the field of argon filling welding, and comprises a pipeline body, an argon filling device is arranged in the pipeline body, the argon filling device comprises a central pipe and a first fixing disc, and the first fixing disc is fixed at the bottom end of the central pipe. A plurality of argon discharging holes are formed in the outer portion of the center pipe and evenly distributed in the length direction of the center pipe, a second fixing disc is arranged on the outer side of the center pipe in a sliding fit mode, an argon filling device is placed in the pipeline body, the welding position is located between the first fixing disc and the second fixing disc, and argon is input into the argon filling device. Argon passes through the middle pipe and is discharged to the position between the first fixing disc and the second fixing disc from the argon discharging holes, so that the argon can be only discharged to the welding position, resource waste is reduced, the use efficiency is improved, meanwhile, the argon discharging holes in other positions are blocked by the protective sleeve, and argon leakage and waste are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of argon-filled welding, and particularly relates to an argon-filled sealing device for high-temperature resistant pipelines. Background Art

[0002] Argon arc welding is widely used in pipeline welding. When welding stainless steel pipelines, in order to prevent the weld metal from undergoing an oxidation reaction at high temperatures and causing intergranular corrosion, argon gas must be filled inside the pipeline to be welded for protection.

[0003] If the entire internal cavity of the pipeline is filled with argon gas, not only is the argon gas consumption large, but also the argon gas concentration is not easy to guarantee, resulting in waste of argon gas, and insufficient argon gas concentration is likely to affect the quality of argon arc welding.

[0004] An argon-filled sealing device for inside pipeline argon arc welding of a prior patent (publication number: CN 203579001 U) includes a combined plug, a connecting cable chain, an argon gas pipe joint, and a traction steel wire. The combined plug is disc-shaped and is used in combination of two pieces. When in use, it is inserted into the pipeline to be welded. A sealed space for storing argon gas is formed between the two combined plugs and the pipeline to be welded. Argon gas is filled through the argon gas pipe joint to effectively protect the weld of the pipeline to be welded. The argon-filled sealing device for inside pipeline argon arc welding provided by this patent fills the pipeline between the two combined plugs with argon gas, resulting in waste. The distance between the two combined plugs is not convenient to adjust and cannot adapt to welding joints of different widths, affecting the quality of argon arc welding.

[0005] Therefore, it is very necessary to propose an argon-filled sealing device for high-temperature resistant pipelines to solve the above problems. Summary of the Utility Model

[0006] To solve the deficiencies existing in the prior art, the utility model provides an argon-filled sealing device for high-temperature resistant pipelines to solve the problems that when the entire internal cavity of the pipeline is filled with argon gas, not only is the argon gas consumption large, but also the argon gas concentration is not easy to guarantee, resulting in waste of argon gas, and insufficient argon gas concentration is likely to affect the quality of argon arc welding. At the same time, the position of the second fixed disk in the utility model is adjustable, thus more convenient to adapt to welding joints of different widths.

[0007] The utility model adopts the following technical solutions.

[0008] A high-temperature resistant pipeline argon-filling sealing device, comprising a pipeline body, an argon-filling device is arranged inside the pipeline body, the argon-filling device includes a central pipe and a first fixing plate, the first fixing plate is fixed at the bottom end of the central pipe, a plurality of argon discharge holes are formed outside the central pipe, and the plurality of argon discharge holes are uniformly distributed along the length direction of the central pipe. A second fixing plate is slidably fitted on the outer side of the central pipe. A through hole for the central pipe to slide through is formed in the inner ring of the second fixing plate. The top end of the through hole is communicated with a protective sleeve, and the protective sleeve is sleeved on the outer side of the central pipe. The second fixing plate is fixed on the corresponding argon discharge hole, and the second fixing plate is arranged above the first fixing plate.

[0009] Preferably, a second sealing ring is fixed on the outer side of the second fixing plate. A clamping groove is formed on the outer side of the second sealing ring. A fitting block is clamped on the clamping groove. One side of the fitting block close to the central pipe is connected with a fixed insertion rod. One end of the fixed insertion rod passes through the second fixing plate and is inserted into the corresponding argon discharge hole.

[0010] Preferably, a first sealing ring is fixed on the outer ring of the first fixing plate. The outer rings of the first sealing ring and the second sealing ring are attached to the inner wall of the pipeline body. Both the first sealing ring and the second sealing ring are elastic.

[0011] Preferably, a fixing ring is fixed at the bottom end of the first fixing plate, and a connecting rope is fixed on the fixing ring.

[0012] Preferably, a docking port is arranged at the top end of the central pipe.

[0013] Preferably, a welding area is arranged on the outer side of the pipeline body, and the welding area is arranged between the first fixing plate and the second fixing plate.

[0014] Preferably, the diameters of the first fixing plate and the second fixing plate are the same.

[0015] The beneficial effects of the present utility model are as follows compared with the prior art:

[0016] 1. In the actual operation of the present utility model, the argon discharge holes can be used as both the argon discharge ports and the fixing holes of the second fixing plate. The second fixing plate can displace and slide on the central pipe to adjust the distance between the first fixing plate and the second fixing plate, which is convenient for adapting to welding areas with different widths and the width of the area that needs to be filled with argon. When the position adjustment is completed, the fixed insertion rod of the fitting block can be inserted into the corresponding argon discharge hole to complete the fixation.

[0017] 2. In the actual operation of the present utility model, the argon filling device is placed inside the pipe body, and the welding position is located between the first fixed plate and the second fixed plate. By inputting argon into the argon filling device at this time, the argon passes through the intermediate pipe and is discharged from the argon discharge holes to between the first fixed plate and the second fixed plate, so that the argon can be discharged only to the welding position, reducing the waste of resources, improving the usage efficiency. At the same time, the protective sleeve will block the argon discharge holes at other positions, avoiding argon leakage and waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic structural diagram of the high-temperature resistant pipe argon filling and sealing device of the present utility model.

[0019] Figure 2 It is a schematic structural diagram of the argon filling device of the present utility model.

[0020] Figure 3 It is a schematic structural diagram of the argon discharge hole of the present utility model.

[0021] Figure 4 It is a schematic structural diagram of the second sealing ring and the clamping groove of the present utility model.

[0022] In the figure: 1. Pipe body; 2. Argon filling device; 3. Central pipe; 4. Docking port; 5. Argon discharge hole; 6. First fixed plate; 7. First sealing ring; 8. Fixed ring; 9. Connecting rope; 10. Second fixed plate; 11. Second sealing ring; 12. Clamping groove; 13. Fitting block; 14. Fixed insertion rod; 15. Welding position. SPECIFIC EMBODIMENTS

[0023] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described in this application are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the spirit of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0024] The present utility model provides a high-temperature resistant pipe argon filling and sealing device as shown in Figure 1 - Figure 4 shown, including a pipe body 1, and the pipe body 1 is made of high-temperature resistant stainless steel material.

[0025] Inside the pipe body 1, an argon filling device 2 is provided. The argon filling device 2 includes a central pipe 3 and a first fixing plate 6. The first fixing plate 6 is fixed to the bottom end of the central pipe 3. A plurality of argon discharge holes 5 are formed on the outer side of the central pipe 3. The plurality of argon discharge holes 5 are evenly distributed along the length direction of the central pipe 3. A second fixing plate 10 is slidably engaged with the outer side of the central pipe 3. The second fixing plate 10 is fixed to the argon discharge holes 5 at corresponding positions. The second fixing plate 10 is arranged above the first fixing plate 6. A through hole for the central pipe 3 to slide through is formed in the inner circle of the second fixing plate 10. The top end of the through hole communicates with a protective sleeve 16. The protective sleeve 16 is sleeved on the outer side of the central pipe 3. A docking port 4 is arranged at the top end of the central pipe 3. The docking port 4 can be connected to an argon transmission device. The diameters of the first fixing plate 6 and the second fixing plate 10 are the same.

[0026] A welding joint 15 is arranged on the outer side of the pipe body 1. The welding joint 15 is arranged between the first fixing plate 6 and the second fixing plate 10.

[0027] In the actual operation of the present utility model, the argon filling device 2 is placed inside the pipe body 1, and the welding joint 15 is located between the first fixing plate 6 and the second fixing plate 10. By inputting argon into the argon filling device 2 at this time, the argon passes through the intermediate pipe 3 and is discharged from the argon discharge holes 5 to between the first fixing plate 6 and the second fixing plate 10, so that the argon can be discharged only to the welding joint 15, reducing waste of resources and improving the use efficiency. At the same time, the protective sleeve 16 will block the argon discharge holes 5 at other positions, avoiding argon leakage and waste.

[0028] A second sealing ring 11 is fixed to the outer side of the second fixing plate 10. A clamping groove 12 is formed on the outer side of the second sealing ring 11. A fitting block 13 is clamped on the clamping groove 12. One side of the fitting block 13 close to the central pipe 3 is connected with a fixed insertion rod 14. One end of the fixed insertion rod 14 passes through the second fixing plate 10, and the passing end of the fixed insertion rod 14 is inserted into the corresponding argon discharge hole 5.

[0029] In the actual operation of the present utility model, the argon discharge holes 5 can be used both as argon discharge ports and as fixing holes for the second fixing plate 10. The second fixing plate 10 can slide on the central pipe 3 to adjust the distance between the first fixing plate 6 and the second fixing plate 10, facilitating adaptation to welding joints 15 of different widths and the width of the area that needs to be filled with argon. When the position adjustment is completed, the second fixing plate 10 can be fixed by inserting the fixed insertion rod 14 of the fitting block 13 into the argon discharge hole 5 at the corresponding position.

[0030] Similarly, by pulling out the fitting block 13 and pulling the fixed insertion rod 14 out of the argon discharge hole 5, the second fixing plate 10 can slide on the central pipe 3.

[0031] A first sealing ring 7 is fixed to the outer ring of the first fixing plate 6. The outer rings of the first sealing ring 7 and the second sealing ring 11 are fitted to the inner wall of the pipeline body 1. Both the first sealing ring 7 and the second sealing ring 11 are elastic, and the first sealing ring 7 and the second sealing ring 11 enhance the sealing effect.

[0032] A fixing ring 8 is fixed to the bottom end of the first fixing plate 6, and a connecting rope 9 is fixed to the fixing ring 8. When the pipeline body is too long, the whole device can be pulled through the connecting rope 9 to move inside the pipeline body 1.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: the specific implementation manners of the present invention can still be modified or equivalently replaced, and any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A high temperature resistant pipeline argon filling sealing device, comprising a pipeline body (1), characterized in that: An argon filling device (2) is arranged inside the pipeline body (1), and the argon filling device (2) comprises a central tube (3) and a first fixed plate (6), the first fixed plate (6) being fixed to the bottom end of the central tube (3), a plurality of argon discharge holes (5) being provided on the outside of the central tube (3), and the plurality of argon discharge holes (5) being evenly distributed along the length direction of the central tube (3), a second fixed plate (10) being slidably matched on the outside of the central tube (3), a through hole being provided on the inner ring of the second fixed plate (10) for the central tube (3) to slide through, a protective sleeve (16) being connected to the top of the through hole, and the protective sleeve (16) being sleeved on the outside of the central tube (3), the second fixed plate (10) being fixed on the argon discharge holes (5) at corresponding positions, and the second fixed plate (10) being arranged above the first fixed plate (6).

2. The high temperature resistant pipeline argon filling sealing device according to claim 1, characterized in that: A second sealing ring (11) is fixed on the outer side of the second fixed disk (10), a slot (12) is provided on the outer side of the second sealing ring (11), a fitting block (13) is fitted on the fitting slot (12), a fixed insert rod (14) is connected to the side of the fitting block (13) close to the central tube (3), one end of the fixed insert rod (14) passes through the second fixed disk (10) and is inserted into the corresponding argon exhaust hole (5).

3. The high temperature resistant pipeline argon filling sealing device according to claim 2, characterized in that: The first sealing ring (7) is fixed to the outer ring of the first fixed disk (6); the outer rings of the first sealing ring (7) and the second sealing ring (11) are fitted on the inner wall of the pipeline body (1); and the first sealing ring (7) and the second sealing ring (11) are both elastic.

4. The high temperature resistant pipeline argon filling sealing device according to claim 1, characterized in that: A fixing ring (8) is fixed to the bottom end of the first fixing plate (6), and a connecting rope (9) is fixed to the fixing ring (8).

5. The high temperature resistant pipeline argon filling sealing device according to claim 1, characterized in that: The top end of the central tube (3) is provided with a docking port (4).

6. The high temperature resistant pipeline argon filling sealing device according to claim 1, characterized in that: A welding point (15) is provided on the outer side of the pipe body (1), and the welding point (15) is provided between the first fixing plate (6) and the second fixing plate (10).

7. The high temperature resistant pipeline argon filling sealing device according to claim 1, characterized in that: The diameters of the first fixed disk (6) and the second fixed disk (10) are consistent.

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