Fire-fighting pipeline equipment welding processing device and method

Abstract

The present invention relates to the technical field of welding equipment, and discloses a fire-fighting pipeline equipment welding processing device and method, including a sealing box, the outer wall of the sealing box is fixedly connected with a locking ring by bolts, the side wall of the sealing box is provided with an air inlet pipe connected to an external air supply device, and the side wall of the sealing box is also provided with a smoke exhaust pipe connected to an external exhaust device. The present invention welds the outer wall of the pipeline by making the welding assembly in a sealed state, which can avoid encountering extreme weather conditions such as rainy weather when repairing outdoor fire-fighting pipelines, causing the welding rod to get damp or the welding groove to rust, thereby reducing the quality of the welded joint. The space in the sealing box can also be dynamically sealed by the mutual cooperation between the air inlet pipe and the smoke exhaust pipe. On the basis of eliminating the smoke generated during welding, the sealing box is filled with protective gas, which not only prevents the smoke from polluting the welding area, but also prevents the protective gas from diffusing prematurely, thereby further improving the welding quality.

Description

Technical Field

[0001] The invention relates to the technical field of welding equipment, and in particular to a fire-fighting pipeline equipment welding processing device and method. Background Art

[0002] Firefighting pipes refer to pipe materials used in firefighting to connect firefighting equipment and instruments and to transport water, gas or other media for firefighting. As an important part of urban infrastructure, the welding quality of firefighting pipes is directly related to fire safety and the safety of people’s lives and property. Firefighting pipes need to supply water effectively in emergency situations such as fires. In order to meet the flow and pressure requirements during firefighting, the water pressure inside the firefighting pipes may be relatively high, and may even exceed the rated pressure of the pipes, causing leakage or damage to the pipes. Therefore, emergency repairs to firefighting pipes are urgent.

[0003] However, due to their wide distribution, fire-fighting pipelines are very difficult to repair. For example, fire-fighting pipelines distributed outdoors, when affected by rainy or humid weather, the water vapor in the air may make the welding rods easily susceptible to moisture, increasing the diffusion chance of hydrogen in the weld metal, and causing defects such as bubbles in the weld, affecting the density and strength of the weld. When encountering strong winds, excessive wind speeds may cause the shielding gas to escape too quickly, leading to oxidation, nitridation or other contamination of the weld metal. Insufficient shielding gas may also cause defects such as pores and inclusions in the weld, affecting the density and mechanical properties of the weld. Summary of the invention

[0004] The object of the present invention is to provide a fire protection pipe equipment welding processing device and method to solve at least one technical problem existing in the above-mentioned prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fire-fighting pipeline equipment welding processing device, comprising a sealing box, the outer wall of the sealing box is fixedly connected with a locking ring by bolts, the side wall of the sealing box is provided with an air inlet pipe connected with an external air supply device, the side wall of the sealing box is also provided with a smoke exhaust pipe connected with an external exhaust device, and an air bag connected with an external inflation device is fixedly installed on the arc surface outer wall of the sealing box, when the air bag is inflated, a sealed chamber is formed between the sealing box and the fire-fighting pipeline;

[0006] It also includes a welding assembly that can slide along the outer wall of the pipeline, and the welding assembly is used for welding the outer wall of the pipeline.

[0007] Preferably, the welding assembly comprises a sliding box slidably mounted in a sealed box, a rotating shaft is vertically rotatably mounted on the inner wall of the sliding box, a sliding rail is fixedly mounted on the outer wall of the rotating shaft, and the sliding rail is arc-shaped, an electric-controlled slider is slidably mounted in the sliding rail, and an adjustable welding head is mounted on the side wall of the electric-controlled slider;

[0008] It also includes an adjustment component, which is used to adjust the position of the sliding box and the angle of the sliding rail, and make the center of the sliding rail coincide with the center of the welding seam surface of the fire protection pipeline.

[0009] Preferably, the adjustment assembly includes a cylinder fixedly installed between the inner wall of the sealing box and the sliding box, and also includes two sets of fixed plates fixedly installed on the inner wall of the sliding box through a connecting rod, the outer walls of the two fixed plates are fixedly installed with fixed shafts, and the outer wall of the fixed shaft is rotatably installed with a swing rod, one end of the swing rod is fixedly installed with an incomplete tooth, the outer wall of the rotating shaft is fixedly installed with a rotating gear that can mesh with the incomplete tooth, and the top surface of the slide rail is provided with two laser rangefinders;

[0010] It also includes a swing mechanism, which is used to drive the swing rod to swing back and forth with the fixed axis as the center.

[0011] Preferably, the swing mechanism includes a fixed bracket fixedly mounted on the outer wall of the fixed plate through a connecting rod, and also includes a dual-axis motor fixedly mounted between the two fixed plates, and the driving shafts at both ends of the dual-axis motor passing through the fixed plates and the fixed brackets on both sides are fixedly mounted with a rotating rod, and a sliding sleeve is rotatably mounted on one end of the rotating rod, and the sliding sleeve is slidably mounted on the outer wall of the swing rod.

[0012] Preferably, the air inlet pipe is located at the lower end of the side wall of the sealed box, and the smoke exhaust pipe is located at the upper end of the side wall of the sealed box, and the two are located at opposite sides of the sealed box respectively.

[0013] Preferably, a plurality of rubber wheels are rotatably mounted in the hollow portion of the locking ring via a vertical axis, and the diameter of the rubber wheels is greater than the width of the outer wall of the locking ring.

[0014] Preferably, a laser emitter capable of emitting linear light is fixedly mounted on the inner wall in the vertical direction of the locking ring.

[0015] Preferably, the two laser rangefinders are both slidably mounted on the top surface of the slide rail, and an air pressure sensor is also provided in the sealed box.

[0016] A fire protection pipeline equipment welding processing method comprises the following steps:

[0017] Step 1: When using this device, first place the sealing box at the weld of the outer wall of the pipeline, and use the linear light emitted by the laser transmitter to make the welding head and the weld at the same level, then fix the locking ring to the sealing box with bolts, and inflate the airbag through the external inflatable structure, so that the inflated airbag cooperates with the rubber wheel to fix the sealing box and the locking ring to the outer wall of the pipeline, and at the same time, a closed chamber is formed in the sealing box;

[0018] Step 2: Drive the dual-axis motor to drive the rotating rod to rotate. When the rotating rod rotates, pull the sliding sleeve to slide along the swing rod, and drive the swing rod to swing back and forth with the fixed axis as the center of the circle. Cooperate with the two laser rangefinders to make the distances from both ends of the slide rail to the outer wall of the pipeline equal. Then drive the cylinder to push the sliding box to move until the lasers emitted by the two laser rangefinders can return and be received along the original path, and then stop the cylinder;

[0019] Step 3: Fill the sealed box with protective gas through the air inlet pipe, and start the welding head to start welding. During the welding process, the welding head slides along the slide rail under the action of the electric control slider to weld the weld on the outer wall of the pipeline;

[0020] Step 4: Extract the smoke generated during welding through the exhaust pipe, so that the inside of the sealed box is in a dynamic sealed state for welding; and remove the device by tightening the bolts after welding is completed;

[0021] Step 5: Disassemble the device and move it to the next weld and repeat steps 1 to 4 above.

[0022] A fire protection pipeline equipment welding processing method comprises the following steps:

[0023] Step 6: After welding is completed, close the exhaust pipe, continue to inflate the sealed box through the air inlet pipe to increase the air pressure in the sealed box, and use the air pressure sensor to detect the air pressure in the sealed box. The air pressure detection method is used to detect the sealing of the outer wall of the pipe after welding.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. The present invention welds the outer wall of the pipe by placing the welding assembly in a sealed state, thereby avoiding extreme weather conditions such as rainy weather when repairing outdoor fire-fighting pipes, which may cause the welding rod to get damp or the welding groove to rust, thereby reducing the quality of the welded joint. The present invention can also achieve dynamic sealing of the space in the sealed box through the mutual cooperation between the air inlet pipe and the smoke exhaust pipe. On the basis of eliminating the smoke generated during welding, the sealed box is filled with protective gas, which not only prevents the smoke from polluting the welding area, but also prevents the protective gas from diffusing prematurely, thereby further improving the welding quality.

[0026] 2. The present invention can make the welding head connect with the outer wall of the pipe by adjusting the position of the slide rail, and can always keep the welding head in contact with the outer wall of the fire protection pipe when the welding head slides under the action of the electric control slider by adjusting the angle of the slide rail, so that the welding head can weld the arc weld of the outer wall of the outer pipe, further improving the repair welding quality of the pipe. In addition, by adjusting the length of the welding head to ensure that the welding head can contact the weld of the outer wall of the pipe, the use range of the device is improved.

[0027] 3. The present invention can adjust the position and angle of the slide rail through the cooperation between the swing mechanism and the cylinder, and confirm that the welding head reaches the predetermined position through the laser rangefinder, that is, the rotation center of the welding head coincides with the center of the cross section of the fire pipe weld, so that the welding head can always maintain welding on the weld when surrounding the fire pipe, thereby improving the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0029] Figure 2 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0030] Figure 3 It is a front view of the present invention;

[0031] Figure 4 It is a three-dimensional diagram of the welding assembly of the present invention;

[0032] Figure 5 The cross-section diagram of the present invention is shown in FIG. Figure 1 ;

[0033] Figure 6 The cross-section diagram of the present invention is shown in FIG. Figure 2 ;

[0034] Figure 7 It is a cross-sectional schematic diagram of the present invention from above.

[0035] In the figure: 1. sealing box; 2. locking ring; 3. air intake pipe; 4. exhaust pipe; 5. rubber wheel; 6. bolt; 7. slide rail; 8. laser rangefinder; 9. electric control slider; 10. airbag; 11. welding head; 12. sliding box; 13. cylinder; 14. rotating shaft; 15. rotating gear; 16. incomplete teeth; 17. swing rod; 18. sliding sleeve; 19. rotating rod; 20. fixed bracket; 21. fixed plate; 22. dual-axis motor; 23. fixed shaft. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 7The present invention provides a technical solution: a fire-fighting pipeline equipment welding processing device, comprising a sealed box 1, the outer wall of the sealed box 1 is fixedly connected with a locking ring 2 by bolts 6, the side wall of the sealed box 1 is provided with an air inlet pipe 3 connected with an external air supply device, the side wall of the sealed box 1 is also provided with a smoke exhaust pipe 4 connected with an external exhaust device, and the arc surface outer wall of the sealed box 1 is fixedly installed with an air bag 10 connected with an external inflation device. When the air bag 10 is inflated, a sealed chamber is formed between the sealed box 1 and the fire-fighting pipeline;

[0038] It also includes a welding assembly that can slide along the outer wall of the pipeline, and the welding assembly is used for welding the outer wall of the pipeline.

[0039] Firefighting pipe systems are an important part of building fire safety. They provide necessary water sources for firefighting and emergency use when a fire occurs. However, due to the wide distribution of firefighting pipes, the difficulty of emergency repair is very high. For example, when firefighting pipes are distributed outdoors, the water vapor in the air may make the welding rods easily damp, increase the diffusion opportunity of hydrogen in the weld metal, and cause defects such as bubbles in the weld, affecting the density and strength of the weld. When encountering strong winds, excessive wind speeds may cause the shielding gas to escape too quickly, resulting in oxidation, nitridation or other pollution of the weld metal. Insufficient shielding gas may also cause defects such as pores and inclusions in the weld, affecting the density and mechanical properties of the weld. For firefighting pipes distributed indoors, the indoor environment may be small, which limits the range of activities of construction personnel and the use of construction equipment. Especially in areas with dense pipes, the space limitation adds great difficulty to the construction personnel when carrying out emergency repairs. For this reason, a firefighting pipe equipment welding processing device is provided, and the specific implementation method is as follows:

[0040] When the device is in use, the arc surface cavity of the sealing box 1 is first connected with the arc surface of the outer wall of the fire pipe, and then the position of the sealing box 1 is adjusted so that the welding assembly in the sealing box 1 and the weld of the outer wall of the fire pipe are in the same plane, and the vertical outer wall of the locking ring 2 is in contact with the side wall of the sealing box 1, and the bolt 6 is screwed to fix the locking ring 2 and the sealing box 1 together, and then the airbag 10 is filled with non-flammable gas such as nitrogen through an external inflation device. The inflated airbag 10 fills the gap between the sealing box 1 and the outer wall of the fire pipe, so that the inner wall of the sealing box 1 and the outer wall of the fire pipe form a closed space, and then the sealed space is filled with protective gas (common protective gases include argon, carbon dioxide, nitrogen, etc.) through the air inlet pipe 3, and then the outer wall of the pipe is welded through the movable welding assembly, and the smoke generated during welding is extracted through the smoke exhaust pipe 4 to prevent the smoke and gas from polluting the welding area, interfering with the stability of the arc, and even corroding and polluting the welding equipment, thereby improving the welding quality.

[0041] In this way, by welding the outer wall of the pipe with the welding assembly in a sealed state, it is possible to avoid encountering extreme weather conditions such as rainy weather when repairing outdoor fire-fighting pipes, which may cause the welding rod to become damp or the welding groove to rust, thereby reducing the quality of the welded joint. The space in the sealed box 1 can also be dynamically sealed through the mutual cooperation between the air inlet pipe 3 and the smoke exhaust pipe 4. On the basis of eliminating the smoke generated during welding, the sealed box 1 is filled with protective gas, which not only prevents the smoke from polluting the welding area, but also prevents the protective gas from diffusing prematurely, thereby further improving the welding quality.

[0042] In addition, due to its small overall structure, this device can also be used for fire protection pipes distributed indoors. In an environment where it is inconvenient for construction workers to operate, this device can be installed at the welds that need to be welded for automatic welding. Fire protection pipes can also be repaired in areas with narrow spaces and dense pipes.

[0043] It is worth mentioning that, since certain unexpected situations may occur during the emergency repair of the fire-fighting pipes, such as fire or explosion caused by sparks during welding, the device can be urgently disassembled through the bolts 6, or the airbag 10 can be deflated to quickly separate the device from the weld to avoid further expansion of the disaster. In order to ensure construction safety, the outer wall of the airbag 10 is coated with fireproof materials, and the inside is filled with non-flammable gases such as nitrogen to prevent the airbag 10 from being ignited by sparks generated during welding and causing a fire.

[0044] Further, the welding assembly includes a sliding box 12 slidably mounted in the sealing box 1, a rotating shaft 14 is vertically rotatably mounted on the inner wall of the sliding box 12, a sliding rail 7 is fixedly mounted on the outer wall of the rotating shaft 14, and the sliding rail 7 is arranged in an arc shape, an electric control slider 9 is slidably mounted in the sliding rail 7, and an adjustable welding head 11 is mounted on the side wall of the electric control slider 9;

[0045] It also includes an adjustment component, which is used to adjust the position of the sliding box 12 and the angle of the slide rail 7, and make the center of the slide rail 7 coincide with the center of the weld surface of the fire protection pipe.

[0046] Since the water pressure in fire protection pipes is generally high, when excessive water pressure flows through the inner wall of the pipe, it will cause greater pressure on the inner wall of the pipe. If the strength of the weld is uneven and low, it is easy for the pipe to crack or leak. Therefore, the strength of the pipe welding point needs to be relatively uniform.

[0047] According to the above embodiment, the sliding box 12 can be adjusted by the adjustment component to make the slide rail 7 close to the weld on the outer wall of the pipe, and the center of the slide rail 7 is made to coincide with the center of the weld surface of the fire protection pipe by adjusting the angle of the slide rail 7. Then, the electric control slider 9 is cooperated to slide in the slide rail 7 to drive the welding head 11 to slide and weld along the outer wall of the pipe, so that every arc surface of the slide rail 7 is equal to the outer wall of the pipe, so that the welding head 11 can perform uniform welding on the outer wall of the fire protection pipe. The uniform welding joint helps to ensure the quality and performance of the weld metal and reduce welding defects, so as to achieve the purpose of making the welding joint of the outer wall of the fire protection pipe have better mechanical properties, such as strength, toughness and ductility.

[0048] In this way, adjusting the position of the slide rail 7 can make the welding head 11 connect with the outer wall of the pipe, and by adjusting the angle of the slide rail 7, the welding head 11 can always maintain contact with the outer wall of the fire protection pipe when sliding under the action of the electric control slider 9, so that the welding head 11 can weld the arc weld of the outer wall of the outer pipe, further improving the repair welding quality of the pipe. In addition, by adjusting the length of the welding head 11 to ensure that the welding head 11 can contact the weld of the outer wall of the pipe, the use range of the device is improved.

[0049] Further, the adjustment assembly includes a cylinder 13 fixedly installed between the inner wall of the sealing box 1 and the sliding box 12, and also includes two sets of fixed plates 21 fixedly installed on the inner wall of the sliding box 12 through a connecting rod, the outer walls of the two fixed plates 21 are fixedly installed with fixed shafts 23, and the outer wall of the fixed shaft 23 is rotatably installed with a swing rod 17, one end of the swing rod 17 is fixedly installed with an incomplete tooth 16, the outer wall of the rotating shaft 14 is fixedly installed with a rotating gear 15 that can mesh with the incomplete tooth 16, and the top surface of the slide rail 7 is provided with two laser rangefinders 8;

[0050] It also includes a swing mechanism, which is used to drive the swing rod 17 to swing back and forth with the fixed shaft 23 as the center.

[0051] According to the above embodiment, when the swing mechanism drives the swing rod 17 to swing back and forth with the fixed shaft 23 as the center, it will drive the incomplete teeth 16 to mesh with the rotating gear 15 and cause the rotating gear 15 to rotate together. At this time, the slide rail 7 fixed on the outer wall of the rotating shaft 14 starts to rotate, and the angle adjustment of the slide rail 7 can be completed. After confirming that the distances from the two ends of the slide rail 7 to the outer wall of the fire pipe are equal through the laser rangefinders 8 at both ends (at this time, the center of the slide rail 7 and the center of the cross section of the fire pipe weld are on the same horizontal plane), the cylinder 13 is driven, and the active shaft of the cylinder 13 pushes the sliding box 12 to slide in the sealing box 1, and cooperates with the laser rangefinder 8 to make the center of the slide rail 7 coincide with the center of the cross section of the fire pipe weld. At this time, adjust the welding head 11 so that the welding head 11 contacts the weld, and then start welding the weld.

[0052] In this way, through the cooperation between the swing mechanism and the cylinder 13, the position and angle of the slide rail 7 can be adjusted, and the laser rangefinder 8 can be used to confirm that the welding head 11 has reached the predetermined position, that is, the center of rotation of the welding head 11 coincides with the center of the cross section of the fire pipe weld, so that the welding head 11 can always maintain welding on the weld when surrounding the fire pipe, thereby improving the welding accuracy.

[0053] Furthermore, the swing mechanism includes a fixed bracket 20 fixedly installed on the outer wall of the fixed plate 21 through a connecting rod, and also includes a dual-axis motor 22 fixedly installed between the two fixed plates 21. The driving shafts at both ends of the dual-axis motor 22 pass through the fixed plates 21 and the fixed bracket 20 on both sides and are fixedly installed with a rotating rod 19. A sliding sleeve 18 is rotatably installed at one end of the rotating rod 19, and the sliding sleeve 18 is slidably installed on the outer wall of the swing rod 17.

[0054] According to the above embodiment, when the dual-axis motor 22 rotates, it will drive the rotating rods 19 on both sides to rotate together. When the rotating rods 19 rotate, they will pull the sliding sleeve 18 to slide on the outer wall of the swing rod 17, and drive the swing rod 17 to do reciprocating swinging motion, so as to achieve the purpose of driving the swing rod 17 to swing back and forth with the fixed shaft 23 as the center.

[0055] In this way, by using the crank slider composed of the rotating rod 19, the sliding sleeve 18, the swing rod 17 and the related fixing parts, the quick return characteristic of the swing rod 17 can be utilized when the swing rod 17 rotates, so that the swing rod 17 is first accelerated to swing, so that the swing rod 17 can quickly make a large adjustment, and then the swing rod 17 is decelerated to swing, and the swing rod 17 is adjusted at a small angle, so that the angle adjustment accuracy of the slide rail 7 is higher, so as to ensure that the center of the slide rail 7 can coincide with the center of the cross section of the fire protection pipe weld.

[0056] Furthermore, the air inlet pipe 3 is located at the lower end of the side wall of the sealed box 1 , and the smoke exhaust pipe 4 is located at the upper end of the side wall of the sealed box 1 , and the two are located at opposite sides of the sealed box 1 .

[0057] According to the above embodiment, since the shielding gas is mostly a gas with a higher density than air, such as argon and carbon dioxide, they tend to sink in the absence of forced airflow, while the smoke is mostly small solid particles with a lower density, which generally tend to rise. Therefore, the smoke exhaust pipe 4 is located at the upper end of the side wall of the sealing 1 to help in the process of extracting the smoke, and the shielding gas is retained inside the sealed box 1 as much as possible to avoid a large amount of shielding gas being brought out when the smoke is extracted, so that the surface of the welding metal strip is protected from oxidation and other chemical reactions.

[0058] Furthermore, a plurality of rubber wheels 5 are rotatably mounted in the hollow portion of the locking ring 2 via a vertical axis, and the diameter of the rubber wheel 5 is greater than the width of the outer wall of the locking ring 2 .

[0059] According to the above embodiment, it can be known that when the device is fixed on the outer wall of the fire pipe by the bolts 6 and the airbag 10, at this time, the object in contact with the outer wall of the fire pipe on one side of the sealing box 1 is the airbag 10, and the object in contact with the outer wall of the fire pipe on one side of the locking ring 2 is the rubber wheel 5. In this way, through the elastic surface contact of the sealing box 1 on the outer wall of the fire pipe and the elastic point contact of the locking ring 2 on the outer wall of the fire pipe, the rigid extrusion of the outer wall of the fire pipe when the device is fixed on the outer wall of the fire pipe can be reduced, and the outer wall of the fire pipe can be prevented from being deformed due to the long-term rigid extrusion, which not only makes the fire pipe prone to cracks or water seepage, but also affects the normal passage of water inside it or increases the difficulty of repair.

[0060] Furthermore, a laser emitter capable of emitting linear light is fixedly mounted on the inner wall of the locking ring 2 in the vertical direction.

[0061] According to the above embodiment, it can be known that when using the device, the sealing box 1 and the locking ring 2 need to be fixed to the outer wall of the fire protection pipe by bolts 6, and the welding head 11 and the weld are in the same horizontal plane. At this time, the linear light emitted by the laser emitter can be used for auxiliary installation, and the laser emitter and the slide rail 7 are installed on the same plane. In this way, when the linear light is collinear with the straight line where the weld is located, it can be said that the welding head 11 and the weld are in the same horizontal plane.

[0062] Furthermore, the invention is characterized in that: the two laser rangefinders 8 are both slidably mounted on the top surface of the slide rail 7 , and an air pressure sensor is also arranged in the sealing box 1 .

[0063] According to the above embodiment, when the laser rangefinder 8 measures the distance between the two ends of the slide rail 7 and the outer wall of the fire pipe, it can perform multi-point measurement between the slide rail 7 and the outer wall of the fire pipe through synchronous sliding, so as to avoid invalid measurement results caused by uneven outer wall of the pipe, and enable the welding head 11 to always maintain contact with the weld of the outer wall of the fire pipe when sliding in the slide rail 7.

[0064] The air pressure sensor can monitor the air pressure in the sealed box 1 in real time to prevent the air pressure in the sealed box 1 from being too high or too low due to the large difference in efficiency between the air inlet pipe 3 and the exhaust pipe 4, thereby affecting the welding quality.

[0065] A fire protection pipeline equipment welding processing method comprises the following steps:

[0066] Step 1: When the device is used, the sealing box 1 is first placed on the weld of the outer wall of the pipeline, and the welding head 11 and the weld are placed at the same horizontal plane with the linear light emitted by the laser transmitter, and then the locking ring 2 is fixed to the sealing box 1 by the bolt 6, and the airbag 10 is inflated by the external inflation structure, so that the inflated airbag 10 cooperates with the rubber wheel 5 to fix the sealing box 1 and the locking ring 2 on the outer wall of the pipeline, and at the same time, a closed chamber is formed in the sealing box 1;

[0067] Step 2: Drive the dual-axis motor 22 to drive the rotating rod 19 to rotate. When the rotating rod 19 rotates, the sliding sleeve 18 is pulled to slide along the swing rod 17, and the swing rod 17 is driven to swing back and forth with the fixed axis 23 as the center of the circle. The two laser rangefinders 8 are coordinated to make the distances from both ends of the slide rail 7 to the outer wall of the pipeline equal. Then, the cylinder 13 is driven to push the sliding box 12 to move until the lasers emitted by the two laser rangefinders 8 can return to the original path and be received. At this time, the cylinder 13 is stopped.

[0068] Step 3: Fill the sealed box 1 with protective gas through the air inlet pipe 3, and start the welding head 11 to start welding. During the welding process, the welding head 11 slides along the slide rail 7 under the action of the electric control slider 9 to weld the weld of the outer wall of the pipeline;

[0069] Step 4: extract the smoke generated during welding through the smoke exhaust pipe 4, so that the inside of the sealed box 1 is in a dynamic sealing state for welding; and after the welding is completed, remove the device by tightening the bolts 6;

[0070] Step 5: Disassemble the device and move it to the next weld and repeat steps 1 to 4 above.

[0071] A fire protection pipeline equipment welding processing method comprises the following steps:

[0072] Step 6: After welding is completed, close the smoke exhaust pipe 4, continue to inflate the sealed box 1 through the air inlet pipe 3 to increase the air pressure in the sealed box 1, and use the air pressure sensor to detect the air pressure in the sealed box 1. The air pressure detection method is used to detect the sealing of the outer wall of the pipe after welding.

[0073] According to the above implementation method, in order to avoid rework caused by low welding quality, the air inlet pipe 3 is closed and the sealed box 1 is continuously inflated to increase the air pressure in the sealed box 1 to a preset value. After a period of stillness, the air pressure in the sealed box 1 is detected by an air pressure sensor. If the air pressure in the sealed box 1 does not decrease significantly or the difference is within the allowable error range, it means that the welding quality is stable and the sealing performance is good. If the air pressure decreases significantly, it means that the welding quality and the sealing performance are poor, and a secondary welding is required at the weld.

[0074] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification and the drawings can also be directly processed according to the existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire protection pipe equipment welding processing device, comprising a sealing box (1), characterized in that: The outer wall of the sealed box (1) is fixedly connected to a locking ring (2) by bolts (6); the side wall of the sealed box (1) is provided with an air inlet pipe (3) connected to an external air supply device; the side wall of the sealed box (1) is also provided with a smoke exhaust pipe (4) connected to an external air extraction device; an air bag (10) connected to an external inflation device is fixedly installed on the curved outer wall of the sealed box (1); when the air bag (10) is inflated, a sealed chamber is formed between the sealed box (1) and the fire-fighting pipe; Also included is a welding assembly that can slide along the outer wall of the pipeline, and the welding assembly is used to weld the outer wall of the pipeline; The welding assembly comprises a sliding box (12) slidably mounted in a sealing box (1), a rotating shaft (14) being vertically rotatably mounted on the inner wall of the sliding box (12), a sliding rail (7) being fixedly mounted on the outer wall of the rotating shaft (14), and the sliding rail (7) being arc-shaped, an electric control slider (9) being slidably mounted in the sliding rail (7), and an adjustable welding head (11) being mounted on the side wall of the electric control slider (9); It also includes an adjustment component, which is used to adjust the position of the sliding box (12) and the angle of the sliding rail (7), and to make the center of the sliding rail (7) coincide with the center of the welding seam surface of the fire protection pipeline; The adjustment assembly comprises a cylinder (13) fixedly mounted between the inner wall of the sealing box (1) and the sliding box (12), and also comprises two sets of fixed plates (21) fixedly mounted on the inner wall of the sliding box (12) through a connecting rod, the outer walls of the two fixed plates (21) are fixedly mounted with fixed shafts (23), and the outer wall of the fixed shaft (23) is rotatably mounted with a swing rod (17), one end of the swing rod (17) is fixedly mounted with an incomplete tooth (16), the outer wall of the rotating shaft (14) is fixedly mounted with a rotating gear (15) capable of meshing with the incomplete tooth (16), and the top surface of the slide rail (7) is provided with two laser rangefinders (8); It also includes a swing mechanism, which is used to drive the swing rod (17) to swing back and forth with the fixed shaft (23) as the center of the circle; The swing mechanism comprises a fixed bracket (20) fixedly mounted on the outer wall of a fixed plate (21) via a connecting rod, and also comprises a double-axis motor (22) fixedly mounted between the two fixed plates (21), and parts of driving shafts at both ends of the double-axis motor (22) passing through the fixed plates (21) and the fixed bracket (20) at both sides are fixedly mounted with a rotating rod (19), and a sliding sleeve (18) is rotatably mounted on one end of the rotating rod (19), and the sliding sleeve (18) is slidably mounted on the outer wall of the swing rod (17); A plurality of rubber wheels (5) are rotatably mounted on the hollow portion of the locking ring (2) via a vertical axis, and the diameter of the rubber wheels (5) is greater than the width of the outer wall of the locking ring (2).

2. The fire protection pipe equipment welding processing device according to claim 1 is characterized in that: The air inlet pipe (3) is located at the lower end of the side wall of the sealed box (1), and the smoke exhaust pipe (4) is located at the upper end of the side wall of the sealed box (1), and the two are respectively located on opposite sides of the sealed box (1).

3. The fire protection pipe equipment welding processing device according to claim 2 is characterized in that: A laser emitter capable of emitting linear light is fixedly mounted on the inner wall of the locking ring (2) in the vertical direction.

4. The fire protection pipe equipment welding processing device according to any one of claims 1 to 3, characterized in that: The two laser rangefinders (8) are both slidably mounted on the top surface of the slide rail (7), and an air pressure sensor is also provided in the sealed box (1).

5. A fire protection pipe equipment welding processing method, characterized in that: The fire protection pipe equipment welding processing device according to claim 4 is used for processing, comprising the following steps: Step 1: When the device is used, the sealing box (1) is first placed on the weld of the outer wall of the pipeline, and the welding head (11) and the weld are placed at the same level by using the linear light emitted by the laser transmitter. Then, the locking ring (2) and the sealing box (1) are fixed by bolts (6), and the airbag (10) is inflated by the external inflation structure, so that the inflated airbag (10) cooperates with the rubber wheel (5) to fix the sealing box (1) and the locking ring (2) on the outer wall of the pipeline, and at the same time, a closed chamber is formed in the sealing box (1); Step 2: driving the dual-axis motor (22) to drive the rotating rod (19) to rotate, and when the rotating rod (19) rotates, the sliding sleeve (18) is pulled to slide along the swing rod (17), and the swing rod (17) is driven to swing back and forth with the fixed axis (23) as the center, and the two laser rangefinders (8) are coordinated to make the distances from both ends of the slide rail (7) to the outer wall of the pipeline equal, and then the cylinder (13) is driven to push the sliding box (12) to move until the lasers emitted by the two laser rangefinders (8) can return to the original path and be received, and then the cylinder (13) is stopped; Step 3: Fill the sealed box (1) with protective gas through the air inlet pipe (3), and start the welding head (11) to start welding. During the welding process, the welding head (11) slides along the slide rail (7) under the action of the electric control slider (9) to weld the weld seam on the outer wall of the pipeline; Step 4: extract the smoke generated during welding through the smoke exhaust pipe (4), so that the inside of the sealing box (1) is in a dynamic sealing state for welding; and after the welding is completed, the device is removed by tightening the bolts (6); Step 5: Disassemble the device and move it to the next weld and repeat steps 1 to 4 above.

6. The fire protection pipe equipment welding processing method according to claim 5 is characterized in that: The method also includes step six: after the welding is completed, the smoke exhaust pipe (4) is closed, and the air inlet pipe (3) is continued to be used to inflate the sealed box (1) so that the air pressure in the sealed box (1) is increased, and the air pressure in the sealed box (1) is detected in conjunction with an air pressure sensor, and the sealing of the outer wall of the pipe after welding is detected by air pressure detection.

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