Pipeline emergency construction welding device

Abstract

The application provides a pipeline emergency construction welding device, and relates to the technical field of pipeline welding under pressure, which comprises a cover buckle protection piece, a cover buckle connecting piece is installed on the cover buckle protection piece; the cover buckle connecting piece is used for locking the cover buckle protection piece; a temperature control discharge piece is installed on the cover buckle protection piece; the temperature control discharge piece is used for preventing burns; a magnetic positioning piece is installed on the cover buckle protection piece; when a worker welds and repairs a gas pipeline, the cover buckle protection piece can be surrounded outside the welding point to perform protection work, and the temperature control discharge piece can be used for pressure relief, so that the worker is prevented from being injured by the instant flame when spot welding a leakage point; the problem that the current pipeline emergency construction welding device cannot ensure that the worker is protected from the flame when welding under pressure is solved.

Description

Technical Field

[0001] This invention relates to the field of pipeline live welding technology, and in particular to a pipeline emergency repair welding device. Background Technology

[0002] In actual gas pipeline operation, due to factors such as groundwater corrosion, welded joints are highly susceptible to micro-pinholes and leaks caused by poor initial circumferential welding quality. When there is insufficient time for complete gas shut-off, venting, and pressure reduction, emergency welding repairs are typically performed while maintaining positive gas pressure inside the pipeline. The leaking gas at the leak point can be ignited and produce a flame during spot welding. This pressurized welding operation is a high-risk special hot work operation. Currently, pipeline emergency welding operations are usually performed by workers directly using welding tongs and welding rods to spot weld and plug leaks. Existing equipment has insufficient protection capabilities, resulting in high safety risks in actual operations. It is not convenient to ensure flame protection for workers during pressurized leak plugging welding, nor is it convenient to automatically control pre-ventilation to replace the high concentration of gas at the leak point, increasing the risk of explosion. At the same time, when manually operating welding tongs and welding rods, the welding rod is relatively long in the initial stage of welding, and the welding rod is prone to shaking during the welding process, affecting the quality of the weld. Summary of the Invention

[0003] This disclosure relates to a pipeline emergency repair welding device to address the problem that current pipeline emergency repair welding devices are not convenient for ensuring flame protection for workers during pressurized leak sealing welding.

[0004] In a first aspect, this disclosure provides a pipeline emergency repair welding device, specifically including a protective cover, on which a connecting piece is mounted; the connecting piece is used to lock the protective cover; a temperature-controlled emission device is mounted on the protective cover; the temperature-controlled emission device is used to prevent burns; a magnetic positioning device is mounted on the protective cover; the magnetic positioning device is used to position the connecting piece; an angle adjustment device is mounted on the protective cover; a welding rod guide is mounted on the angle adjustment device; the protective cover includes an upper protective cover and a lower protective cover, the lower protective cover being rotatably mounted on the upper protective cover via a hinge; the upper and lower protective covers are used to enclose and fit over the outside of the pipeline leak.

[0005] In at least some embodiments, the protective cover further includes: a connecting rope, a welding clamp, a positioning screw hole, a fan switch, and a positive pressure fan. The connecting rope is fixedly installed on the upper protective cover; a welding clamp is fixedly installed on the connecting rope; a welding machine is externally connected to the welding clamp; a positioning screw hole is opened on the side of the lower protective cover; a positive pressure fan is fixedly installed at the bottom of the lower protective cover through a flange; the fan switch is fixedly installed at the bottom of the positioning screw hole; and the fan switch is electrically connected to the positive pressure fan.

[0006] In at least some embodiments, the cover fastener includes: a positioning bolt and a positioning groove, wherein the positioning bolt is inserted into the upper protective cover; the positioning bolt has a positioning groove, and the positioning groove is annular; a handwheel is provided at the end of the positioning bolt; and the positioning bolt is threaded into a positioning screw hole.

[0007] In at least some embodiments, the cover fastener further includes: a welding machine switch, a compression shell, and a compression spring. The welding machine switch is fixedly installed at the end of the positioning bolt. The welding machine switch is electrically connected to a welding machine external to the welding clamp. The compression shell is slidably sleeved on the front end of the positioning bolt. A compression spring is sleeved on the inner side of the front end of the positioning bolt. One end of the compression spring is fixedly connected to the compression shell, and the other end of the compression spring is fixedly connected to the inner side of the positioning bolt. The inner side of the compression shell presses against the welding machine switch. The front end of the compression shell presses against the fan switch. The initial elastic force of the compression spring is greater than the triggering force of the fan switch. The compression spring elastically supports the compression shell to prevent accidental activation.

[0008] In at least some embodiments, the temperature-controlled emission component includes: an emission pipe, a temperature control switch, and a metal corrugated pipe, wherein the emission pipe is fixedly mounted on the upper protective cover; the temperature control switch is fixedly mounted on the emission pipe, and the detection end of the temperature control switch passes through the inside of the emission pipe; and the metal corrugated pipe is fixedly mounted on the emission pipe.

[0009] In at least some embodiments, the magnetic positioning component includes: a positioning mounting shell, a positioning shaft, and a return spring. The positioning mounting shell is fixedly mounted on the upper protective cover. The positioning shaft is sleeved inside the positioning mounting shell, and the end of the positioning shaft is slidably inserted into the upper protective cover. The end of the positioning shaft is used to insert into a positioning groove. The positioning shaft has a T-shaped cross-section. The return spring is sleeved on the positioning shaft.

[0010] In at least some embodiments, the magnetic positioning component further includes: an electromagnet located inside the positioning mounting housing; the electromagnet being fixedly mounted on the upper protective cover; a positioning shaft passing through the electromagnet; the positioning shaft being made of ferrous metal; one end of a return spring being fixedly connected to the electromagnet, and the other end of the return spring being fixedly connected to the positioning shaft; and a temperature control switch being electrically connected to the electromagnet.

[0011] In at least some embodiments, the angle adjustment component includes: a ball sleeve, a ball head sleeve, and a glass cover; the ball sleeve is threadedly connected to the upper protective cover; the inner side of the ball sleeve has a spherical hole; the ball head sleeve is movably fitted into the spherical hole of the ball sleeve; the bottom of the ball head sleeve is fixedly installed with a glass cover; the glass cover is made of high-temperature resistant glass; the glass cover has a through hole in the middle; and the ball sleeve passes through the upper protective cover.

[0012] In at least some embodiments, the angle adjustment component further includes: a cylindrical frame, on which the glass cover is fixedly sleeved; the cylindrical frame is provided with three through slots.

[0013] In at least some embodiments, the welding rod guide includes: a guide cylinder and a cleaning scraper, the guide cylinder being rotatably sleeved on a cylinder frame; the guide cylinder having a through hole in the middle; the through hole in the middle of the guide cylinder being used to insert a welding rod; and the cleaning scraper being fixedly installed at the bottom of the guide cylinder by bolts, and the cleaning scraper slidingly adhering to the bottom of the glass cover.

[0014] This invention provides a welding device for emergency pipeline repair, which has the following advantages:

[0015] The protective cover used in this invention can surround the weld point during gas pipeline welding and leak repair, providing protection. It can be used in conjunction with a temperature control venting device to release pressure, preventing injury to workers from the instantaneous flame generated during spot welding of leaks. This reduces interference from the flame on the welding operation and prevents workers from being burned. Combined with the cover connector, it ensures that workers must prioritize installing the protective cover for flame protection and activate a positive pressure fan for ventilation before proceeding with welding. This effectively improves welding safety and prevents the gas concentration inside the protective cover from exceeding the standard and failing to dissipate in time.

[0016] In addition, the temperature-controlled emission device can automatically detect the flame temperature ignited during gas pipeline welding. Combined with the magnetic positioning device, it can be used to lock the positioning bolts. This ensures that when workers need to remove the cover protection device, the weld point has been completely welded and sealed, and the gas flame is extinguished or must be extinguished before removing the cover protection device. This further ensures the safety of removing the cover protection device and avoids the risk of workers forgetting to extinguish the flame, causing the flame to spread rapidly and burn workers during removal.

[0017] In addition, the use of a welding rod guide makes it easier to insert the welding rod to weld the leak. The cleaning scraper can be used to clean the glass cover, which can prevent impurities on the bottom of the glass cover from affecting the observation of the weld. The method of using the guide tube to connect to the end of the welding rod makes the welding rod spot welding more stable and less likely to cause the end of the welding rod to shake due to factors such as air pressure at the leak. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram:

[0021] Figure 1 A schematic diagram of a pipeline emergency repair welding device installed behind a gas pipeline is shown.

[0022] Figure 2 A cross-sectional view of the internal structure of a pipeline emergency repair welding device according to this application is shown;

[0023] Figure 3 A schematic diagram of the overall structure of the cover buckle protective component of this application is shown;

[0024] Figure 4 A schematic diagram showing the installation position of the ball sleeve in this application is provided;

[0025] Figure 5 A schematic diagram showing the installation location of the positive pressure fan in this application is provided;

[0026] Figure 6 A schematic diagram of the overall structure of the cover fastener connector of this application is shown;

[0027] Figure 7 This application shows Figure 2 Enlarged view of the structure of region A in the middle;

[0028] Figure 8 A schematic diagram of the overall structure of the angle adjustment component of this application is shown;

[0029] Figure 9 A schematic diagram of the electrode guide structure of this application is shown;

[0030] Figure 10 A control system diagram of this application is shown.

[0031] The attached figure label list is as follows:

[0032] 1. Protective cover; 101. Upper protective cover; 1011. Connecting rope; 1012. Welding clamp; 102. Lower protective cover; 1021. Positioning screw hole; 1022. Fan switch; 103. Positive pressure fan; 2. Protective cover connector; 201. Positioning bolt; 2011. Positioning groove; 202. Welding machine switch; 203. Extrusion shell; 2031. Extrusion spring; 3. Temperature control discharge component; 301. Discharge pipe; 302. Temperature control switch; 303. Metal bellows; 4. Magnetic positioning component; 401. Positioning mounting shell; 402. Positioning shaft; 4021. Return spring; 403. Electromagnet; 5. Angle adjustment component; 501. Ball sleeve; 502. Ball head sleeve; 503. Glass cover; 504. Cylinder frame; 6. Welding rod guide component; 601. Guide cylinder; 602. Cleaning scraper. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example 1: Please refer to Figures 1 to 10 :

[0035] This invention proposes a pipeline emergency repair welding device, including a cover protection component 1, a cover connection component 2 installed on the cover protection component 1; the cover connection component 2 is used to lock the cover protection component 1; a temperature control emission component 3 is installed on the cover protection component 1; the temperature control emission component 3 is used to prevent burns; a magnetic positioning component 4 is installed on the cover protection component 1; the magnetic positioning component 4 is used to position the cover connection component 2; an angle adjustment component 5 is installed on the cover protection component 1; a welding rod guide component 6 is installed on the angle adjustment component 5; the cover protection component 1 includes: an upper protective cover 101 and a lower protective cover 102, the lower protective cover 102 is rotatably installed on the upper protective cover 101 via a hinge; the upper protective cover 101 and the lower protective cover 102 are used to enclose and cover the outside of the pipeline leak point.

[0036] In this embodiment, the cover buckle protective component 1 further includes: a connecting rope 1011, a welding clamp 1012, a positioning screw hole 1021, a fan switch 1022, and a positive pressure fan 103. The connecting rope 1011 is fixedly installed on the upper protective cover 101; the welding clamp 1012 is fixedly installed on the connecting rope 1011; the welding clamp 1012 is externally connected to a welding machine; the lower protective cover 102 has a positioning screw hole 1021 on its side; the bottom of the lower protective cover 102 is fixedly installed with a positive pressure fan 103 through a flange; the fan switch 1022 is fixedly installed at the bottom of the positioning screw hole 1021; the fan switch 1022 is electrically connected to the positive pressure fan 103; the cover buckle connector 2 includes: a positioning bolt 201 and a positioning groove 2011, the positioning bolt 201 being inserted into the upper protective cover. On 101; a positioning groove 2011 is provided on the positioning bolt 201, and the positioning groove 2011 is a ring structure; a handwheel is provided at the end of the positioning bolt 201; the positioning bolt 201 is threaded into the positioning screw hole 1021; the cover fastener 2 also includes: a welding machine switch 202, a compression shell 203 and a compression spring 2031, the welding machine switch 202 is fixedly installed on the end of the positioning bolt 201; the welding machine switch 202 is electrically connected to the welding machine connected to the welding clamp 1012; the compression shell 203 is slidably sleeved on the front end of the positioning bolt 201; the compression spring 2031 is sleeved on the inner side of the front end of the positioning bolt 201; one end of the compression spring 2031 is fixedly connected to the compression shell 203, and the other end of the compression spring 2031 is fixedly connected to the positioning bolt 201. The inner side of the extrusion shell 203 is pressed against the welding machine switch 202; the front end of the extrusion shell 203 is pressed against the fan switch 1022; the initial elastic force of the extrusion spring 2031 is greater than the triggering force of the fan switch 1022; the extrusion spring 2031 elastically supports the extrusion shell 203 to prevent accidental activation; the cover buckle protective component 1 can surround the weld point for protection when workers are welding and repairing leaks in gas pipelines. It can be used in conjunction with the temperature control emission component 3 to release pressure and prevent the instantaneous flame generated at the leak point from injuring workers. It can reduce the interference of the flame on the welding operation and prevent workers from being burned. At the same time, in conjunction with the cover buckle connector 2, it can ensure that workers prioritize installation when performing spot welding and leak repair. Welding can only proceed normally after the protective cover 1 provides flame protection and the positive pressure fan 103 is turned on for ventilation. This effectively improves welding safety and prevents dangerous situations such as explosions during arc ignition caused by excessive gas leakage concentration inside the protective cover 1 and failure to ventilate in time. The structure is simple to control. After closing the upper protective cover 101 and the lower protective cover 102, as the positioning bolt 201 is continuously rotated manually, the positioning bolt 201 drives the extrusion shell 203 to contact the fan switch 1022 first. Under the elastic extrusion of the extrusion spring 2031, the fan switch 1022 is pressed first. At this time, the fan switch 1022 can control the positive pressure fan 103 to ventilate quickly, ensuring that the positive pressure fan 103 is pre-started for ventilation.

[0037] In this embodiment, the temperature-controlled discharge component 3 includes: a discharge pipe 301, a temperature control switch 302, and a metal bellows 303. The discharge pipe 301 is fixedly mounted on the upper protective cover 101. The temperature control switch 302 is fixedly mounted on the discharge pipe 301, and the detection end of the temperature control switch 302 passes through the inside of the discharge pipe 301. The metal bellows 303 is fixedly mounted on the discharge pipe 301. The magnetic positioning component 4 includes: a positioning mounting shell 401, a positioning shaft 402, and a return spring 4021. The positioning mounting shell 401 is fixedly mounted on the upper protective cover 101. A positioning shaft 402 is fitted inside the mounting housing 401, and the end of the positioning shaft 402 is slidably inserted into the upper protective cover 101; the end of the positioning shaft 402 is used to insert into the positioning groove 2011; the positioning shaft 402 has a T-shaped cross-section; a return spring 4021 is fitted on the positioning shaft 402; the magnetic positioning component 4 also includes: an electromagnet 403, which is located inside the positioning mounting housing 401; the electromagnet 403 is fixedly installed on the upper protective cover 101; the positioning shaft 402 passes through the electromagnet 403; the positioning shaft 402 is made of ferrous metal; the return spring 4021... One end of the return spring 4021 is fixedly connected to the electromagnet 403, and the other end is fixedly connected to the positioning shaft 402; the temperature control switch 302 is electrically connected to the electromagnet 403; the temperature control emission component 3 can automatically detect the flame temperature ignited during gas pipeline welding, and can be used with the magnetic positioning component 4 to lock the positioning bolt 201, which can ensure that when the staff needs to remove the cover buckle protection component 1, the weld point has been completely welded and sealed, and there is no gas flame or the fire must be extinguished before removing the cover buckle protection component 1, which can further ensure that the removal of the cover buckle protection component 1 is safe. To ensure safety and prevent workers from forgetting to extinguish the fire, which could cause the flame to spread rapidly and burn workers when the protective cover 1 is removed; during the welding operation, the gas ignited by the welding rod is blown out from the exhaust pipe 301 by the positive pressure fan 103. At this time, the temperature control switch 302 detects that the flame temperature is high and controls the electromagnet 403 to be energized. The electromagnet 403 can then control the positioning shaft 402 to move down and insert into the positioning groove 2011 to limit the positioning bolt 201. At this time, the positioning bolt 201 cannot be directly removed.

[0038] In Example 2, based on Example 1, the angle adjustment component 5 includes: a ball sleeve 501, a ball head sleeve 502, and a glass cover 503. The ball sleeve 501 is threadedly connected to the upper protective cover 101. A spherical hole is provided on the inner side of the ball sleeve 501. The ball head sleeve 502 is movably embedded in the spherical hole of the ball sleeve 501. The glass cover 503 is fixedly installed at the bottom of the ball head sleeve 502. The glass cover 503 is made of high-temperature resistant glass. A through hole is provided in the middle of the glass cover 503. The ball sleeve 501 passes through the upper protective cover 101. The angle adjustment component 5 also includes: a cylinder frame 504. The cylinder frame 504 is fixedly sleeved on the glass cover 503. The cylinder frame 504 has three through slots. The welding rod guide 6 includes: a guide cylinder 601 and a cleaning scraper 602. The guide cylinder 601 is rotatably sleeved on the cylinder frame 502. 04 Above; The guide tube 601 has a through hole in the middle; The through hole in the middle of the guide tube 601 is used to insert the welding rod; A cleaning scraper 602 is fixedly installed at the bottom of the guide tube 601 by bolts, and the cleaning scraper 602 slides against the bottom of the glass cover 503; The welding rod guide 6 makes it easy to insert the welding rod to weld the leak point, and the cleaning scraper 602 can scrape and clean the glass cover 503, which can avoid the impurities attached to the bottom of the glass cover 503 from affecting the observation of the welding point. At the same time, the ball head sleeve 502 can be used to easily rotate and adjust the angle, and adjust the welding point more flexibly. At the same time, the method of using the guide tube 601 to fit the end of the welding rod makes the welding rod spot welding more stable and less likely to cause the end of the welding rod to shake due to factors such as the air pressure of the leak point, which can improve the quality of the welding point.

[0039] The working principle of this embodiment is as follows: When welding and repairing leaks in a pipeline, the welding rod is first clamped in the welding clamp 1012. The worker wears full protective gear. First, the protective cover 1 needs to be installed on the gas pipeline before the welding machine connected to the welding clamp 1012 can be turned on normally. The specific operation is as follows: First, the upper protective cover 101 is placed on the outside of the gas pipeline, keeping the weld pinhole leak point roughly aligned with the guide tube 601. Then, the lower protective cover 102 is rotated so that the upper and lower protective covers 101 and 102 are closed and covered on the outside of the gas pipeline. Then, the positioning bolt 201 is threaded into the positioning bolt hole 1021 to ensure that the upper and lower protective covers 101 and 102 are closed and locked. As the positioning bolt 201 is continuously rotated manually, the positioning bolt 201 drives the extrusion shell 203 to contact the fan switch 1022 first. Under the elastic extrusion of the extrusion spring 2031, the fan switch 1022 is pressed first. At this time, the fan switch 1022 can control the positive direction. The air compressor 103 provides rapid ventilation, expelling the leaked gas inside the upper protective cover 101 through the exhaust pipe 301 to prevent excessive concentration. As the positioning bolt 201 continues to rotate, the fan switch 1022 is fully pressed, causing the extrusion shell 203 to move backward and compress the extrusion spring 2031, which in turn presses the welding machine switch 202. Only then can the welding machine switch 202 control the welding machine connected to the welding clamp 1012 to start, allowing the welding clamp 1012 to operate normally and ensuring the pre-start positive pressure fan 103 provides ventilation. Then, the welding rod can be inserted into the guide tube 601. The guide tube 601 can be moved to rotate the ball head sleeve 502 to adjust the angle. Combined with the glass cover 503, it is easy to observe the spot welding position and accurately spot weld the welding rod to seal the leak. As welding progresses, when it is necessary to clean the bottom of the glass cover 503, simply rotate the guide tube 601 to drive the cleaning scraper 602 to scrape off the welding slag adhering to the bottom surface of the glass cover 503.

[0040] During the welding operation, the gas ignited by the welding rod is discharged from the exhaust pipe 301 under the force of the positive pressure fan 103. When the temperature control switch 302 detects a high flame temperature, it energizes the electromagnet 403. The electromagnet 403 then controls the positioning shaft 402 to move downwards, compressing the return spring 4021. The positioning shaft 402 then inserts into the positioning groove 2011, locking the positioning bolt 201 and preventing it from being directly disassembled. When disassembling the positioning bolt 201, it is necessary to ensure... If the temperature inside the discharge pipe 301 is normal, there is no gas leakage after welding, and there is no residual flame inside the cover, or if the fire extinguishing agent is sprayed into the air inlet of the positive pressure fan 103 by a fire extinguisher, and then the positive pressure fan 103 is used to diffuse the fire extinguishing agent into the upper protective cover 101 and the lower protective cover 102 to extinguish the fire source inside the cover, the electromagnet 403 can only be de-energized after the temperature control switch 302 detects that the temperature is normal. At this time, under the elastic drive of the return spring 4021, the positioning shaft 402 is pulled out from the positioning groove 2011, and the positioning bolt 201 can be rotated normally for disassembly.

[0041] The following points should be noted in this article:

[0042] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0043] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0044] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A pipeline emergency repair welding device, comprising a protective cover (1), wherein a connecting cover (2) is installed on the protective cover (1); characterized in that: The cover buckle connector (2) is used to lock the cover buckle protector (1); a temperature control emission device (3) is installed on the cover buckle protector (1); the temperature control emission device (3) is used to prevent burns; a magnetic positioning device (4) is installed on the cover buckle protector (1); the magnetic positioning device (4) is used to position the cover buckle connector (2); An angle adjustment component (5) is installed on the cover buckle protective component (1); a welding rod guide component (6) is installed on the angle adjustment component (5); The protective cover (1) includes an upper protective cover (101) and a lower protective cover (102). The lower protective cover (102) is mounted on the upper protective cover (101) by means of a hinge. The upper protective cover (101) and the lower protective cover (102) are used to enclose and cover the outside of the pipe leak.

2. The pipeline emergency repair welding device according to claim 1, characterized in that, The protective cover (1) further includes: a connecting rope (1011), a welding clamp (1012), a positioning screw hole (1021), a fan switch (1022), and a positive pressure fan (103). The connecting rope (1011) is fixedly installed on the upper protective cover (101); the welding clamp (1012) is fixedly installed on the connecting rope (1011); the welding clamp (1012) is connected to a welding machine; the lower protective cover (102) has a positioning screw hole (1021) on its side; the bottom of the lower protective cover (102) is fixedly installed with a positive pressure fan (103) through a flange; the fan switch (1022) is fixedly installed at the bottom of the positioning screw hole (1021); the fan switch (1022) is electrically connected to the positive pressure fan (103).

3. The pipeline emergency repair welding device according to claim 2, characterized in that, The cover fastener (2) includes: a positioning bolt (201) and a positioning groove (2011). The positioning bolt (201) is inserted into the upper protective cover (101). The positioning bolt (201) has a positioning groove (2011) and the positioning groove (2011) is an annular structure. The end of the positioning bolt (201) is provided with a handwheel. The positioning bolt (201) is threaded into the positioning screw hole (1021).

4. The pipeline emergency repair welding device according to claim 3, characterized in that, The cover fastener (2) further includes: a welding machine switch (202), an extrusion shell (203), and an extrusion spring (2031). The welding machine switch (202) is fixedly installed at the end of the positioning bolt (201). The welding machine switch (202) is electrically connected to the welding machine connected to the welding clamp (1012). The extrusion shell (203) is slidably sleeved on the front end of the positioning bolt (201). An extrusion spring (2031) is sleeved on the inner side of the front end of the positioning bolt (201). One end of the extrusion spring (2031) is fixedly connected to the extrusion shell (203), and the other end of the extrusion spring (2031) is fixedly connected to the inner side of the positioning bolt (201). The inner side of the extrusion shell (203) presses against the welding machine switch (202). The front end of the extrusion shell (203) presses against the fan switch (1022). The extrusion spring (2031) elastically supports the extrusion shell (203) to prevent accidental activation.

5. A pipeline emergency repair welding device according to claim 3, characterized in that, The temperature control discharge component (3) includes: discharge pipe (301), temperature control switch (302) and metal corrugated pipe (303). The discharge pipe (301) is fixedly installed on the upper protective cover (101). The temperature control switch (302) is fixedly installed on the discharge pipe (301), and the detection end of the temperature control switch (302) passes through the inside of the discharge pipe (301). The metal corrugated pipe (303) is fixedly installed on the discharge pipe (301).

6. The pipeline emergency repair welding device according to claim 5, characterized in that, The magnetic positioning component (4) includes: a positioning mounting shell (401), a positioning shaft (402), and a return spring (4021). The positioning mounting shell (401) is fixedly mounted on the upper protective cover (101). The positioning shaft (402) is sleeved inside the positioning mounting shell (401), and the end of the positioning shaft (402) is slidably inserted into the upper protective cover (101). The end of the positioning shaft (402) is used to insert into the positioning groove (2011). The cross-section of the positioning shaft (402) is a T-shaped structure. The return spring (4021) is sleeved on the positioning shaft (402).

7. A pipeline emergency repair welding device according to claim 6, characterized in that, The magnetic positioning component (4) further includes: an electromagnet (403), which is located inside the positioning mounting shell (401); the electromagnet (403) is fixedly mounted on the upper protective cover (101); the positioning shaft (402) passes through the electromagnet (403); the positioning shaft (402) is made of ferrous metal; one end of the reset spring (4021) is fixedly connected to the electromagnet (403), and the other end of the reset spring (4021) is fixedly connected to the positioning shaft (402); the temperature control switch (302) is electrically connected to the electromagnet (403).

8. The pipeline emergency repair welding device according to claim 1, characterized in that, The angle adjustment component (5) includes: a ball sleeve (501), a ball head sleeve (502), and a glass cover (503). The ball sleeve (501) is threaded onto the upper protective cover (101). A spherical hole is provided on the inner side of the ball sleeve (501). The ball head sleeve (502) is movably embedded in the spherical hole of the ball sleeve (501). The glass cover (503) is fixedly installed at the bottom of the ball head sleeve (502). The glass cover (503) is made of high-temperature resistant glass. A through hole is provided in the middle of the glass cover (503). The ball sleeve (501) passes through the upper protective cover (101).

9. A pipeline emergency repair welding device according to claim 8, characterized in that, The angle adjustment component (5) further includes: a cylindrical frame (504), which is fixedly sleeved on the glass cover (503); the cylindrical frame (504) is provided with three through slots.

10. A pipeline emergency repair welding device according to claim 9, characterized in that, The welding rod guide (6) includes a guide cylinder (601) and a cleaning scraper (602). The guide cylinder (601) is rotatably sleeved on the cylinder frame (504). The guide cylinder (601) has a through hole in the middle. The through hole in the middle of the guide cylinder (601) is used to insert the welding rod. The cleaning scraper (602) is fixedly installed at the bottom of the guide cylinder (601) by bolts, and the cleaning scraper (602) slides against the bottom of the glass cover (503).

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