Butt joint tooling for installation of pressure steel pipe in hydropower station and its use method

Abstract

The docking tooling used for the installation of pressure steel pipes in a hydropower station and its use method include the docking tooling, the docking tooling includes a skeleton plate, a top plate and a bottom plate are arranged on the skeleton plate, and docking clamps that match each other are symmetrically arranged at both ends of the skeleton plate, the docking clamps are provided with fixing bolts that match with them, and the bottom plate is provided with multiple anti-skid grooves. With the above structure, the tooling fixture structure is simple and reasonable, easy to manufacture, small in space, and can quickly adjust the misalignment size and coaxiality of the pressure steel pipe docking; it has sufficient assembly and operation space, is easy to install and disassemble, can be reused, has low cost, and high efficiency; it effectively reduces damage to the steel pipe base material, has strong fastness, good adjustability, and flexible operation.

Description

Technical Field

[0001] The invention relates to the technical field of penstock butt joint adjustment, in particular to a butt joint tool used for installing penstocks in a hydropower station and a use method thereof. Background Art

[0002] The length of the penstock pipe section of the Baihetan Hydropower Station is designed to be 2.4~3m / section, the inner diameter of the penstock pipe is 10.2~8.6m, and the wall thickness is 24~68mm. During the installation of the pipe section, steel pipe docking is included. During the docking process, there is a strict control of the misalignment size deviation control problem. Each pipe section has 2-3 layers of stiffening rings, each layer of stiffening rings is composed of 12 pieces, each piece has 2 grouting holes, and the stiffening ring is 1.2m and 1.5m away from the edge of the pipe section. The traditional construction device for adjusting the misalignment and coaxiality of the pipe section docking is to use a simple seven-piece steel plate, one side of which is welded on the pipe wall, and then the jack is placed on the other side of the steel plate to adjust the pipe wall docking. This method requires the seven-piece steel plate to be welded on the pipe wall and then cut, polished and anti-corroded. It is time-consuming and inconvenient to disassemble and assemble, which greatly reduces the production efficiency and cannot meet the production schedule requirements. In addition, in high-strength steel, welding tooling on the parent material is avoided as much as possible.

[0003] In the existing steel pipe butt joint technology, there are many methods for butt joint of small and medium diameter pipes, but there is no good method for butt joint of medium and large steel pipes, especially large pressure steel pipes with a diameter of about ten meters used in hydropower station construction, especially when the construction space is small. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a docking tool for the installation of pressure steel pipes in a hydropower station and a method for using the same. The tooling fixture has a simple and reasonable structure, is easy to manufacture, occupies a small space, can quickly adjust the misalignment size and coaxiality of the pressure steel pipe docking, has sufficient assembly and operation space, is easy to install and disassemble, can be reused, has low cost and high efficiency, effectively reduces damage to the steel pipe base material, has strong fastening, good adjustability and flexible operation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a docking tooling for the installation of pressure steel pipes in a hydropower station, including a docking tooling, wherein the docking tooling includes a skeleton plate, a top plate and a bottom plate are provided on the skeleton plate, and docking clamps that cooperate with each other are symmetrically provided at both ends of the skeleton plate, and fixing bolts that cooperate with each other are provided on the docking clamps, and a plurality of anti-slip grooves are provided on the bottom plate.

[0006] In the preferred solution, the bottom plate is provided with a fixed frame that cooperates with it, the fixed frame is provided with a movable frame, the bottom of the movable frame is provided with a magnetic structure, the movable frame is provided with an adjusting screw that cooperates with its thread, and the bottom of the adjusting screw is connected to a rotating seat arranged on the top plate.

[0007] In a preferred solution, a cushion layer is provided on the inner side of the docking card.

[0008] In a preferred solution, the top tightening plate is symmetrically provided with connecting frames, and the connecting frames are provided with running wheels.

[0009] In a preferred solution, a plurality of groups of suction cup structures are provided on the travel wheel.

[0010] The butt joint tooling and use method thereof for installing a hydropower station penstock provided by the present invention, by adopting the above structure, has the following beneficial effects:

[0011] (1) The fixture has a simple and reasonable structure, is easy to manufacture, takes up little space, and can quickly adjust the misalignment size and coaxiality of the pressure steel pipe;

[0012] (2) It has sufficient assembly and operation space, is easy to install and disassemble, can be reused, has low cost and high efficiency;

[0013] (3) Effectively reduce damage to the steel pipe base material, with strong fastening, good adjustability and flexible operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the use status of the docking tooling structure of the present invention.

[0016] Figure 2 It is a schematic diagram of the docking tooling structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the skeleton plate structure of the present invention.

[0018] Figure 4 It is a schematic diagram of the magnetic attraction structure of the present invention.

[0019] In the figure: pressure steel pipe 1, stiffening ring 2, slurry hole 3, docking tooling 4, skeleton plate 5, top plate 6, rotating seat 7, bottom plate 8, fixed frame 9, docking card plate 10, cushion layer 11, connecting frame 12, walking wheel 13, suction cup structure 14, fixing bolt 15, anti-skid groove 16, moving frame 17, magnetic suction structure 18, adjusting screw 19. DETAILED DESCRIPTION

[0020] Embodiment 1:

[0021] like Figure 1-4In the figure, a docking tool for installing a pressure steel pipe of a hydropower station includes a docking tool 4, wherein the docking tool 4 includes a skeleton plate 5, on which a top plate 6 and a bottom plate 8 are provided, and at both ends of the skeleton plate 5, mutually matching docking card plates 10 are symmetrically provided, and the docking card plate 10 is provided with fixing bolts 15 matching therewith, and the bottom plate 8 is provided with a plurality of anti-slip grooves 16.

[0022] In the preferred solution, the bottom plate 8 is provided with a fixed frame 9 matched therewith, the fixed frame 9 is provided with a moving frame 17, the bottom of the moving frame 17 is provided with a magnetic structure 18, the moving frame 17 is provided with an adjusting screw 19 matched with its thread, and the bottom of the adjusting screw 19 is connected to the rotating seat 7 provided on the top plate 6. The magnetic structure 14 is used to cooperate with the attraction, so as to facilitate the adjustment of the strength of the magnetic attraction, keep the docking tool 4 stable on the surface of the pressure steel pipe 1, reduce the strength of manual traction, and make it more convenient and easy.

[0023] In a preferred solution, a cushion layer 11 is provided on the inner side of the docking card plate 10. Anti-slip top tightening.

[0024] In the preferred solution, the top plate 10 is symmetrically provided with a connecting frame 12, and the connecting frame 12 is provided with a walking wheel 13. The docking tool 4 can be stably moved on the outer surface of the pressure steel pipe 1 by traction and adsorption, and the movement is smooth, convenient and practical.

[0025] In a preferred embodiment, a plurality of suction cup structures 14 are provided on the walking wheel 13 to improve the pulling force and reduce the working intensity of manual traction.

[0026] Embodiment 2:

[0027] like Figure 1-4 In the present invention, the working principle is:

[0028] 1. Use a hand chain hoist to lift the docking tool 4 to a suitable position, dock the docking clamp 10 with the stiffening ring 2 on the pressure steel pipe 1, and then use the fixing bolts 15 to lock the slurry holes 3 on the stiffening ring 2, so that the two ends of the docking tool 4 are respectively installed and fixed to the two pressure steel pipes 1 that need to be docked;

[0029] 2. Arrange the jack on one side of the two butted pressure steel pipes 1 so that it matches the anti-skid groove 16 on the butt joint tooling 4, and then fine-tune the jack to ensure accurate butt joint;

[0030] 3. After the two pressure steel pipes 1 are accurately butted, positioning welding is performed, and then the fixing bolts 15 are removed to disassemble the butt joint tooling 4. By adjusting the adjusting screw 19, the suction force between the magnetic suction structure 18 and the pressure steel pipe 1 is utilized to keep the butt joint tooling 4 pressed against the outer surface of the pressure steel pipe 1. However, since the magnetic suction structure 18 is not in contact with the pressure steel pipe 1, the butt joint tooling 4 can move along the curved surface of the outer surface of the pressure steel pipe 1 under the pushing action of the construction personnel, and the butt joint tooling 4 can be easily and stably moved to the next slurry hole 3 in cooperation with the walking wheels 13 and the multiple groups of suction cup structures 14 arranged thereon;

[0031] 4. Then repeat steps 1 to 3, accurately adjust the joints at the joints of the two pressure steel pipes 1 that need to be aligned, and make positioning welds all over;

[0032] 5. Finally, the butt joint tooling 4 is disassembled and the butt joints of the two pressure steel pipes 1 are welded, polished, inspected, and anti-corroded.

[0033] The beneficial effects of the present invention are as follows: the fixture has a simple and reasonable structure, is easy to manufacture, occupies a small space, can quickly adjust the misalignment size and coaxiality of the pressure steel pipe docking; has sufficient assembly and operation space, is easy to install and disassemble, can be reused, has low cost and high efficiency; effectively reduces damage to the steel pipe base material, has strong fastening, good adjustability and flexible operation.

Claims

1. A butt joint tool for installing a penstock pipe in a hydropower station, comprising a butt joint tool (4), Features: The docking tooling (4) comprises a frame plate (5), a top plate (6) and a bottom plate (8) are provided on the frame plate (5), docking clamps (10) which cooperate with each other are symmetrically provided at both ends of the frame plate (5), fixing bolts (15) which cooperate with each other are provided on the docking clamps (10), and a plurality of anti-slip grooves (16) are provided on the bottom plate (8); The bottom plate (8) is provided with a fixed frame (9) matched therewith, the fixed frame (9) is provided with a movable frame (17), the bottom of the movable frame (17) is provided with a magnetic attraction structure (18), the movable frame (17) is provided with an adjusting screw (19) matched therewith by a thread, and the bottom of the adjusting screw (19) is connected to a rotating seat (7) provided on the top plate (6); A connecting frame (12) is symmetrically arranged on the docking card (10), and a running wheel (13) is arranged on the connecting frame (12); The walking wheel (13) is provided with a plurality of groups of suction cup structures (14); The method of using the above tooling includes the following steps: 1) Using a hand chain hoist to lift the docking tool (4) to a suitable position, docking the docking clamp (10) with the stiffening ring (2) on the pressure steel pipe (1), and then using the fixing bolts (15) to cooperate with the slurry holes (3) on the stiffening ring (2) to lock, so that the two ends of the docking tool (4) are respectively installed and fixed to the two pressure steel pipes (1) to be docked; 2) placing a jack on one side of the two butted penstocks (1) so that it matches the anti-slip groove (16) on the butt joint tooling (4), and then fine-adjusting the jack to ensure accurate butt joint; 3) After the two pressure steel pipes (1) are accurately butt-jointed, positioning welding is performed, and then the fixing bolts (15) are removed to disassemble the butt-jointing tooling (4). By adjusting the adjusting screw (19), the suction force between the magnetic suction structure (18) and the pressure steel pipe (1) is utilized to keep the butt-jointing tooling (4) pressed against the outer surface of the pressure steel pipe (1). However, since the magnetic suction structure (18) is not in contact with the pressure steel pipe (1), the butt-jointing tooling (4) can move along the arc surface of the outer surface of the pressure steel pipe (1) under the pushing action of the construction personnel, and cooperate with the walking wheel (13) and the multiple groups of suction cup structures (14) arranged thereon to move the butt-jointing tooling (4) to the next grouting hole (3); 4) Then repeat steps 1 to 3, and precisely adjust the joints at the joints of the two pressure steel pipes (1) that need to be aligned, and make positioning welds all over; 5) Finally, the butt joint tooling (4) is disassembled and the butt joints of the two pressure steel pipes (1) are welded, polished, inspected, and subjected to corrosion protection.

2. The butt jointing tool for installing the pressure steel pipe of a hydropower station according to claim 1, Features: The inner side surface of the docking clamping plate (10) is provided with a cushion layer (11).

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