A pressure steel pipe tunnel welding equipment

Abstract

This utility model relates to the field of welding equipment technology and discloses a welding device for pressure steel pipes inside a tunnel. It includes a movable guide member with a through hole formed along an axis parallel to the horizontal plane for the pressure steel pipe to pass through. A gas guide channel is also formed on the guide member to transport gas along a preset path. The inlet end of the gas guide channel communicates with the through hole. An extraction device for extracting gas is fixedly connected to the outside of the guide member. The extraction device includes a gas guide pipe, and an exhaust fan is installed inside the gas guide pipe. By setting up the guide member, gas guide channel, gas guide pipe, and exhaust fan, when harmful gases are generated during the welding of the pressure steel pipe, the exhaust fan guides the harmful gases into the gas guide channel, and finally discharges them through the gas guide pipe. This allows the harmful gases to be effectively discharged from the tunnel, preventing them from accumulating inside the tunnel, avoiding safety accidents, and improving the safety of welding personnel.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a welding device for pressure steel pipe tunnels. Background Technology

[0002] Pumped-storage power stations utilize the elevation difference between the upper and lower reservoirs to store and generate electricity. The greater the elevation difference, the greater the stored hydrodynamic energy and the larger the power generation; however, this also significantly increases the water pressure on the water intake pipeline. Currently, high-strength steel materials such as Q345R, Q490S, 600MPa, 800MPa, and 1000MPa are widely used for pressure pipes. With the rapid development of China's materials industry, the widespread application of high-strength materials of 1200MPa and above has become an inevitable trend. However, while the strength of metallic materials is improved by adding trace elements, their weldability also faces severe challenges. Currently, the welding technology for pressure steel pipes below 600MPa is relatively mature, but research on welding technology for pressure steel pipes above 800MPa is particularly urgent. The pressure steel pipes of the pumped-storage power station's water intake system are pre-buried in long-distance tunnels, characterized by high water head, a larger diameter at the top and smaller diameter at the bottom, a thinner wall at the top and thicker wall at the bottom, and a combination of horizontal and inclined shaft sections. When welding pressure steel pipes with existing equipment, harmful gases generated during welding can easily remain inside the cavities, potentially causing safety accidents and reducing the safety of welding personnel. Utility Model Content

[0003] This invention proposes a welding device for pressure steel pipe tunnels to solve the problem that existing devices cannot timely discharge harmful gases.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a welding device for pressure steel pipes inside a hole, comprising a movable guide member, wherein a through hole for the pressure steel pipe to pass through is formed on the guide member along an axis parallel to the horizontal plane, and a gas guiding channel for conveying gas along a preset path is formed on the guide member, wherein the inlet end of the gas guiding channel is connected to the through hole, and an air extraction component for extracting gas is fixedly connected to the outside of the guide member, wherein the air extraction component includes a gas guide pipe, an exhaust fan is installed inside the gas guide pipe, and the inlet end of the gas guide pipe is fixedly connected to the outlet end of the gas guiding channel.

[0005] Preferably, the through hole is provided with a driving component for moving the pressure steel pipe. The driving component includes two brackets, which are symmetrically fixedly connected inside the through hole, and a driving roller is rotatably connected between the two brackets. The circumferential surface of the driving roller is recessed to form an annular groove.

[0006] Preferably, a corrugated hose is fixedly connected to the end of the air duct away from the guide.

[0007] Preferably, the bottom of the guide is fixedly connected to a support member, the support member includes a support frame, the bottom of the support frame is fixedly connected to a plurality of bottom rods, the bottom of the bottom rods is rotatably connected to a base frame, and the base frame is rotatably connected to a movable wheel inside.

[0008] Preferably, the guide includes a guide ring, an air guide cavity is formed inside the guide ring, and an exhaust hole is formed on the outside of the guide ring. The exhaust hole is connected to the air guide cavity. A through hole is formed on the guide ring, and a plurality of air inlets are formed on the inner wall of the guide ring. The air inlets are located inside the through hole and are connected to the air guide cavity.

[0009] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0010] (1) When harmful gases are generated during the welding of pressure steel pipes, the harmful gases are guided into the gas channel by the exhaust fan and finally discharged through the gas pipe, so that the harmful gases can be effectively discharged from the cave, avoiding the harmful gases from lingering inside the cave, avoiding safety accidents, and providing protection for the safety of welding personnel.

[0011] (2) When the pressure steel pipe is inserted into the guide for welding, the motor drives the drive roller to rotate, thereby moving the pressure steel pipe, making it easier to weld the pressure steel pipe, reducing the welding difficulty of the pressure steel pipe, improving the welding efficiency of the pressure steel pipe, and eliminating the need for personnel to drag the pressure steel pipe, further ensuring the safety of welding personnel. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is one of the perspective views of this utility model;

[0014] Figure 2 This is a second perspective view of the present utility model;

[0015] Figure 3 This is a cross-sectional view of the guide component of this utility model;

[0016] Figure 4 This is a perspective view of the driving component of this utility model;

[0017] Figure 5 This is a perspective view of the support component of this utility model;

[0018] Figure 6This is a perspective view of the air extraction component of this utility model;

[0019] In the diagram: 1. Guide component; 11. Guide ring; 12. Exhaust port; 13. Air guide chamber; 14. Air inlet; 2. Drive component; 21. Bracket; 22. Drive roller; 23. Annular groove; 24. Motor; 3. Support component; 31. Support frame; 32. Base rod; 33. Casters; 34. Base frame; 4. Air extraction component; 41. Corrugated hose; 42. Air guide pipe; 43. Exhaust fan. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figures 1-6 As shown, a pressure steel pipe in-hole welding equipment includes a movable guide 1. A through hole for the pressure steel pipe to pass through is formed on the guide 1 along an axis parallel to the horizontal plane, and a gas guide channel for conveying gas along a preset path is formed on the guide 1. The inlet end of the gas guide channel is connected to the through hole. An air extraction component 4 for extracting gas is fixedly connected to the outside of the guide 1. The air extraction component 4 includes a gas guide pipe 42. An exhaust fan 43 is installed inside the gas guide pipe 42, and the inlet end of the gas guide pipe 42 is fixedly connected to the outlet end of the gas guide channel.

[0022] The above technical solution requires placing the guide 1 inside the cave before welding the pressure steel pipe inside the cave. Then, the pressure steel pipe to be welded is inserted into the through hole on the guide 1, and the two pressure steel pipes are brought into contact. The two pressure steel pipes are then welded using welding equipment. During the welding of the pressure steel pipe, the exhaust fan 43 operates to guide the gas flow inside the air guide pipe 42, creating a negative pressure in the air guide channel inside the guide 1. This creates suction at the air inlet end of the air guide channel, drawing in the gas during the welding of the pressure steel pipe. Finally, the gas is discharged through the air guide pipe 42, allowing the gas to be transported to the outside of the cave. This prevents harmful gases from lingering inside the cave and ensures the safety of construction personnel.

[0023] To facilitate welding of movable pressure steel pipes, such as Figure 1 , Figure 2 and Figure 4 As shown, a drive component 2 for moving the pressure steel pipe is provided inside the through hole. The drive component 2 includes two brackets 21, which are symmetrically fixed inside the through hole. A drive roller 22 is rotatably connected between the two brackets 21. The circumferential surface of the drive roller 22 is recessed to form an annular groove 23.

[0024] In this embodiment, when the pressure steel pipe is inserted into the through hole of the guide 1, the drive roller 22 is supported by two brackets 21. The drive roller 22 rotates relative to the brackets 21 and cooperates with the annular groove 23, thereby making the pressure steel pipe easy to move, reducing the difficulty of welding the pressure steel pipe and improving the efficiency of welding the pressure steel pipe.

[0025] In addition, such as Figure 4 As shown, a motor 24 is fixedly connected to one of the brackets 21. When the drive roller 22 needs to rotate, the motor 24 works, thereby driving the drive roller 22 to rotate, so that the drive roller 22 drives the pressure steel pipe to move.

[0026] To facilitate the venting of welding gases from the cavity, such as Figure 1 , Figure 2 and Figure 6 As shown, a corrugated hose 41 is fixedly connected to the end of the air duct 42 away from the guide 1.

[0027] In this embodiment, when the vent pipe 42 discharges harmful gas, it cooperates with the corrugated hose 41 to discharge the harmful gas to the outside of the cave through the corrugated hose 41.

[0028] To facilitate the movement of guide 1, such as Figure 1 , Figure 2 and Figure 5 As shown, a support member 3 is fixedly connected to the bottom of the guide member 1. The support member 3 includes a support frame 31. Multiple bottom rods 32 are fixedly connected to the bottom of the support frame 31. A base frame 34 is rotatably connected to the bottom of the bottom rods 32. A movable wheel 33 is rotatably connected inside the base frame 34.

[0029] In this embodiment, the guide 1 is supported by the support frame 31, and the support frame 31 is supported by the base rod 32, the moving wheel 33 and the base frame 34. The support frame 31, the base frame 34 and the moving wheel 33 are pushed to rotate, thereby allowing the device to move in the cave, so that the support frame 31 drives the guide 1 to the position where the pressure steel pipe needs to be welded.

[0030] Specifically, in one embodiment, regarding the aforementioned guide 1, as... Figures 1-3 As shown, the guide member 1 includes a guide ring 11, an air guide cavity 13 is formed inside the guide ring 11, and an exhaust hole 12 is formed outside the guide ring 11. The exhaust hole 12 is connected to the air guide cavity 13. A through hole is formed on the guide ring 11, and a plurality of air inlets 14 are formed on the inner wall of the guide ring 11. The air inlets 14 are located inside the through hole and are connected to the air guide cavity 13.

[0031] In this embodiment, when welding is required on the pressure steel pipes, two pressure steel pipes to be welded are inserted into the through holes on the guide ring 11. The motor 24 operates, thereby driving the drive roller 22 to rotate around the bracket 21, causing the pressure steel pipes to move relative to the guide ring 11 until the two pressure steel pipes come into contact. After the two pressure steel pipes come into contact, they are welded by the welding equipment. During welding, the exhaust fan 43 operates, thereby guiding the gas flow inside the air guide pipe 42, creating a negative pressure in the air guide pipe 42, which in turn creates a negative pressure in the air guide chamber 13, thereby generating suction in the air inlet 14, thereby extracting the harmful gases during welding and discharging them through the air guide pipe 42, and finally discharging the harmful gases through the corrugated hose 41.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding device for pressure steel pipe tunnels, comprising a movable guide (1), characterized in that: The guide (1) has a through hole along an axis parallel to the horizontal plane for the pressure steel pipe to pass through, and a gas guide channel is formed on the guide (1) to transport gas along a preset path. The inlet end of the gas guide channel is connected to the through hole. An air extraction component (4) for extracting gas is fixedly connected to the outside of the guide (1). The air extraction component (4) includes a gas guide pipe (42). An exhaust fan (43) is installed inside the gas guide pipe (42), and the inlet end of the gas guide pipe (42) is fixedly connected to the outlet end of the gas guide channel.

2. The pressure steel pipe tunnel welding equipment according to claim 1, characterized in that: The through hole is provided with a driving component (2) for driving the pressure steel pipe to move. The driving component (2) includes two brackets (21), which are symmetrically fixedly connected inside the through hole. A driving roller (22) is rotatably connected between the two brackets (21). The circumferential surface of the driving roller (22) is recessed to form an annular groove (23).

3. The pressure steel pipe tunnel welding equipment according to any one of claims 1-2, characterized in that: The end of the air duct (42) away from the guide (1) is fixedly connected to a corrugated hose (41).

4. The pressure steel pipe tunnel welding equipment according to claim 1, characterized in that: The bottom of the guide (1) is fixedly connected to a support (3), the support (3) includes a support frame (31), the bottom of the support frame (31) is fixedly connected to a plurality of bottom rods (32), the bottom of the bottom rods (32) is rotatably connected to a base frame (34), and the interior of the base frame (34) is rotatably connected to a moving wheel (33).

5. A pressure steel pipe tunnel welding device according to any one of claims 1-2, characterized in that: The guide (1) includes a guide ring (11), an air guide cavity (13) is formed inside the guide ring (11), and an exhaust hole (12) is formed on the outside of the guide ring (11). The exhaust hole (12) is connected to the air guide cavity (13). A through hole is formed on the guide ring (11), and a plurality of air inlets (14) are formed on the inner wall of the guide ring (11). The air inlets (14) are located inside the through hole and are connected to the air guide cavity (13).

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