Pressure steel pipe mounting and seam pressing tool frame suitable for pumped storage power station

Abstract

The invention provides a pressure seam tool frame suitable for pressure steel pipe installation of a pumped storage power station, belongs to the technical field of steel pipe welding, and solves the technical problems of guaranteeing steel pipe assembly gaps and improving construction efficiency in steel pipe assembly construction when pressure steel pipes are installed. A pressure steel pipe mounting and seam pressing tool frame suitable for a pumped storage power station comprises two outer rings, a plurality of connecting rods are fixedly connected to the inner sides of the circumferences of the two outer rings at equal intervals, the other ends of the multiple connecting rods at the same end are fixedly connected with the same inner ring, and the ends, away from each other, of the two inner rings are fixedly connected with mounting plates; a first round rod is rotationally connected to the middle of the inner side of one mounting plate, and a second round rod is rotationally connected to the inner side of the other mounting plate. According to the method, high-precision positioning and supporting of the butt joint of the pressure steel pipes are achieved, butt joint errors are remarkably reduced, the tightness and concentricity of connection of the pressure steel pipes are guaranteed, the time for butt joint adjustment of the steel pipes is greatly shortened, and the construction cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of steel pipe welding, and relates to a seam pressing tooling frame for steel pipe installation, in particular to a seam pressing tooling frame applicable to the installation of penstocks in pumped storage power stations. Background Art

[0002] In the construction of pumped storage power stations, as a key component of the water conveyance system, the installation quality of penstocks directly affects the safe and stable operation of the power stations. The installation process of penstocks involves multiple links, among which the seam pressing operation between steel pipe segments is crucial, which is directly related to the sealing performance and overall structural strength of the steel pipes.

[0003] In the prior art, when assembling and installing steel pipes, by bringing two steel pipes close to each other and aligning them, and then welding. This method is not only cumbersome in operation, but also due to the large diameter and heavy weight of the steel pipes, the accuracy of manual adjustment of the seam alignment is low, and problems such as edge dislocation and uneven gaps are likely to occur, affecting the welding quality. Moreover, it is very difficult to accurately control the force and displacement of seam pressing, easily resulting in uneven seam pressing and affecting the splicing quality of the steel pipes. Therefore, a seam pressing tooling frame applicable to the installation of penstocks in pumped storage power stations is designed to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to address the above problems existing in the prior art, and propose a seam pressing tooling frame applicable to the installation of penstocks in pumped storage power stations. The technical problem to be solved by this invention is: how to ensure the gap between steel pipe assemblies during the construction of steel pipe assembly in the installation of penstocks in pumped storage power stations and improve the construction efficiency.

[0005] The purpose of the present invention can be achieved by the following technical solutions: A seam pressing tooling frame applicable to the installation of penstocks in pumped storage power stations includes two outer rings. A plurality of connecting rods are fixedly connected at equal intervals on the inner circumferences of the two outer rings. The other ends of the plurality of connecting rods at the same end are fixedly connected to the same inner ring. Installation plates are fixedly connected to the mutually remote ends of the two inner rings. A first round rod is rotatably connected to the middle of the inner side of one of the installation plates, and a second round rod is rotatably connected to the inner side of the other installation plate. Discs are fixedly sleeved on the first round rod and the second round rod near the inner rings on the same side. Four inclined holes are evenly arranged on the circumferences of the two discs. A T-shaped rod is fixedly connected to the end of the first round rod close to the second round rod. A chute adapted to the T-shaped rod is provided at the end of the second round rod close to the first round rod. Convex rods are fixedly connected to both sides of the end of the T-shaped rod close to the second round rod. Connecting plates are fixedly connected to both ends of the inner side of the inner ring close to the second round rod. The other ends of the two connecting plates are fixedly connected to the same cylinder, and two spiral inclined holes are provided on the circumferential surface of the cylinder. The two convex rods are respectively slidably connected in the adjacent spiral inclined holes.

[0006] The working principle of the present invention is as follows: By placing the device at the inner docking position of two steel pipes, synchronous support and positioning are achieved for the mutually approaching sides of the two docked steel pipes. Meanwhile, during the support process, the two outer rings approach each other, thereby causing the two steel pipes to approach each other, reducing the gap therebetween, and improving the working efficiency of steel pipe docking.

[0007] As a further solution of the present invention, four square tubes are fixedly connected to the outer sides of both outer rings at equal circumferential distances. A square rod is slidably sleeved inside each square tube. One end of each square rod close to the inner ring on the same side is fixedly connected to a sliding rod, and the other end of each square rod is fixedly connected to an arc-shaped rubber anti-slip pad.

[0008] With the above structure, through the settings of the square rod and the arc-shaped rubber anti-slip pad, etc., it is convenient to support and position the inner side of the steel pipe, making the two steel pipes in a concentric state, which is convenient for subsequent welding and positioning of the steel pipe group.

[0009] As a further solution of the present invention, each sliding rod is slidably connected in the inclined hole on the adjacent side.

[0010] With the above structure, when the turntable rotates, with the cooperation of the inclined hole, multiple square rods all drive the arc-shaped rubber anti-slip pads to extend out and contact the inner wall of the steel pipe, so that the mutually approaching sides of the two steel pipes are supported equally, reducing the error at the gap, and facilitating the work of the staff such as welding; As a further solution of the present invention, a worm gear is fixedly sleeved on one end of the circumferential surface of the first round rod close to the inner ring on the same side. An installation frame is fixedly connected to the inner side of the inner ring on this side, and a torque motor is fixedly connected to the other end of the installation frame. The output end of the torque motor is fixedly connected to a worm, and the worm meshes with the worm gear.

[0011] With the above structure, the torque motor drives the worm, so that the worm gear drives the first round rod to rotate, making the first round rod in a stable state during the operation of the device and not loosening, improving the stability of the device operation.

[0012] As a further solution of the present invention, a plurality of first insertion rods are fixedly connected to the inner side of one of the outer rings at equal circumferential distances, and a plurality of first sleeves are fixedly connected to the inner side of the other outer ring at equal circumferential distances, and each first insertion rod is slidably inserted into the adjacent first sleeve.

[0013] With the above structure, through the cooperation of the first insertion rod and the first sleeve, when the two outer rings approach each other, they will not rotate or deflect, but only approach or move away smoothly.

[0014] As a further solution of the present invention, a plurality of second insertion rods are fixedly connected to the inner circumferential surface of one of the inner rings at equal distances, and a plurality of second sleeves are fixedly connected to the inner circumferential surface of the other inner ring at equal distances, and each second insertion rod is slidably inserted into the adjacent second sleeve.

[0015] With the above structure, through the arrangement of the second sleeve and the second insertion rod, when the two inner rings approach each other, they are still in a stable state and will not shift relative to each other.

[0016] As a further solution of the present invention, rollers are fixedly connected to both ends of the bottom of the outer circumferential wall of the two outer rings. Through the arrangement of the rollers, it is convenient to move the device.

[0017] Compared with the prior art, the steel pipe installation and seam pressing tooling frame of the present invention has the following advantages: 1. In the present invention, through the cooperation of the first round rod, T-shaped rod, second round rod, turntable, inclined hole, square tube, arc-shaped rubber anti-slip pad, etc., when the torque motor drives the worm gear and the first round rod to rotate through the worm, the two turntables rotate synchronously, so that the four arc-shaped rubber anti-slip pads at both ends of the outer ring extend out and contact the inner wall of the adjacent steel pipe, so that both ends of the two steel pipes in butt joint are supported synchronously, and there will be no large error at the butt joint between the two, effectively solving the problems of poor accuracy and easy edge error in the background technology, and then realizing the high-precision positioning and support at the butt joint of the penstock, significantly reducing the butt joint error, ensuring the tightness and concentricity of the penstock connection, greatly shortening the time for adjusting the butt joint of the steel pipe, improving the construction efficiency, and reducing the construction cost.

[0018] 2. In the present invention, through the arrangement of the convex rod, cylinder, spiral inclined hole, first insertion rod, torque motor, first sleeve, second insertion rod torque motor and second sleeve, when the plurality of arc-shaped rubber anti-slip pads extend out, the two outer ring torque motors approach each other, driving the two steel pipes to approach and squeeze each other, avoiding a large gap between the steel pipes and improving the construction efficiency of the butt joint of the steel pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a schematic structural diagram of an overall steel pipe installation and seam pressing tooling frame applicable to a pumped-storage power station penstock proposed by the present invention; Figure 2 FIG. 2 is a schematic structural diagram of the square tube of the steel pipe installation and seam pressing tooling frame applicable to a pumped-storage power station penstock proposed by the present invention; Figure 3 FIG. 3 is a partial structural schematic diagram of two inner rings of the steel pipe installation and seam pressing tooling frame applicable to a pumped-storage power station penstock proposed by the present invention; Figure 4A seam pressing tooling rack suitable for the installation of penstocks in pumped - storage power stations proposed by the present invention Figure 3 Schematic diagram of the enlarged structure at position A; Figure 5 Partial structural schematic diagram of the inner side of one of the inner rings of a seam pressing tooling rack suitable for the installation of penstocks in pumped - storage power stations proposed by the present invention; Figure 6 Schematic diagram of the structure at the cylindrical part of a seam pressing tooling rack suitable for the installation of penstocks in pumped - storage power stations proposed by the present invention.

[0020] In the figure, 1. Outer ring; 2. Connecting rod; 3. Inner ring; 4. First insertion rod; 401. First sleeve; 5. Second insertion rod; 501. Second sleeve; 6. Roller; 7. Square tube; 701. Square rod; 702. Sliding rod; 703. Arc - shaped rubber anti - slip pad; 8. Mounting plate; 9. First round rod; 10. Turntable; 11. Oblique hole; 12. Cylinder; 13. Mounting frame; 14. Torque motor; 15. Worm; 16. Worm gear; 17. Second round rod; 18. T - shaped rod; 19. Convex rod; 20. Connecting plate; 21. Spiral oblique hole. Detailed implementation manners

[0021] The following are specific embodiments of the present invention and in combination with the attached drawings, the technical solutions of the present invention are further described, but the present invention is not limited to these embodiments.

[0022] Referring to Figures 1 - 6 , a seam pressing tooling rack suitable for the installation of penstocks in pumped - storage power stations includes two outer rings 1. A plurality of connecting rods 2 are fixedly connected at equal intervals on the inner circumferences of the two outer rings 1. The other ends of the plurality of connecting rods 2 at the same end are fixedly connected to the same inner ring 3. Mounting plates 8 are fixedly connected to the mutually - remote ends of the two inner rings 3. The middle part of the inner side of one of the mounting plates 8 is rotatably connected to a first round rod 9, and the inner side of the other mounting plate 8 is rotatably connected to a second round rod 17. Turntables 10 are fixedly sleeved on the first round rod 9 and the second round rod 17 near the inner rings 3 on the same side. Four oblique holes 11 are opened at equal intervals on the circumferences of the two turntables 10. One end of the first round rod 9 close to the second round rod 17 is fixedly connected to a T - shaped rod 18. A chute adapted to the T - shaped rod 18 is opened at one end of the second round rod 17 close to the first round rod 9. Convex rods 19 are fixedly connected to both sides of the end of the T - shaped rod 18 close to the second round rod 17. Connecting plates 20 are fixedly connected to both ends of the inner side of the inner ring 3 close to the second round rod 17. The other ends of the two connecting plates 20 are fixedly connected to the same cylinder 12, and two spiral oblique holes 21 are opened on the circumferential surface of the cylinder 12. The two convex rods 19 are respectively slidably connected in the adjacent spiral oblique holes 21. Through the cooperation of the convex rods 19 and the spiral oblique holes 21, when the T - shaped rod 18 drives the convex rods 19 to rotate, the two outer rings 1 and the inner rings 3 can be driven to approach each other, so that the two steel pipes approach and squeeze each other, reducing the gap between the steel pipes.

[0023] In this embodiment, four square tubes 7 are fixedly connected to the outer sides of both outer rings 1 at equal circumferential distances. A square rod 701 is slidably sleeved inside each square tube 7. One end of each square rod 701 close to the inner ring 3 on the same side is fixedly connected with a sliding rod 702, and the other end of each square rod 701 is fixedly connected with an arc-shaped rubber anti-slip pad 703. Through the settings of the square tube 7, the square rod 701, the arc-shaped rubber anti-slip pad 703, etc., when the multiple square rods 701 move away from each other, the arc-shaped rubber anti-slip pad 703 can abut against the inner wall of the steel pipe, realizing the positioning of the steel pipe, making the two steel pipes in a concentric state, and their positions relative to each other will not shift, so that the two steel pipes are aligned.

[0024] In this embodiment, each sliding rod 702 is slidably connected in the adjacent inclined hole 11. Through the cooperation of the sliding rod 702 and the inclined hole 11, when the turntable 10 rotates, it can drive the multiple arc-shaped rubber anti-slip pads 703 to expand and contract, so that they can contact and separate from the inner wall of the steel pipe, facilitating the positioning of the steel pipe.

[0025] In this embodiment, a worm gear 16 is fixedly sleeved on the circumferential surface of the first round rod 9 near one end close to the inner ring 3 on the same side. An installation frame 13 is fixedly connected to the inner side of the inner ring 3 on this side, and the other end of the installation frame 13 is fixedly connected with a torque motor 14. The output end of the torque motor 14 is fixedly connected with a worm 15, and the worm 15 meshes with the worm gear 16. Through the cooperation of the worm 15 and the worm gear 16, the torque motor 14 can drive the first round rod 9 to rotate, and at the same time, the first round rod 9 will not rotate by itself, ensuring the stability of the device.

[0026] In this embodiment, a plurality of first inserting rods 4 are fixedly connected to the inner side of one of the outer rings 1 at equal circumferential distances, and a plurality of first sleeves 401 are fixedly connected to the inner side of the other outer ring 1 at equal circumferential distances. Each first inserting rod 4 is slidably inserted into the adjacent first sleeve 401. Through the cooperation of the first inserting rod 4 and the first sleeve 401, the two outer rings 1 can stably expand and contract relative to each other, and at the same time, the two outer rings 1 will not rotate relative to each other.

[0027] In this embodiment, a plurality of second inserting rods 5 are fixedly connected to the inner side of one of the inner rings 3 at equal circumferential distances, and a plurality of second sleeves 501 are fixedly connected to the inner side of the other inner ring 3 at equal circumferential distances. Each second inserting rod 5 is slidably inserted into the adjacent second sleeve 501. Through the settings of the second inserting rod 5 and the second sleeve 501, when the two inner rings 3 approach each other, they are still in a stable state.

[0028] In this embodiment, rollers 6 are fixedly connected to both ends of the bottom of the circumferential outer walls of the two outer rings 1. Through the setting of the rollers 6, the device can be moved, and at the same time, it can move inside the steel pipe.

[0029] Working principle: When installing the penstock of a pumped-storage power station and conducting the butt welding of steel pipes, two steel pipes can be first brought closer to each other by a hoisting device, as close as possible. Then, the device is pushed into the interior of the steel pipes through four rollers 6, so that the outer ring 1 at one end is located inside one steel pipe, and the other outer ring 1 is located inside the other steel pipe. Then, the torque motor 14 is started, causing the worm 15 to drive the first round rod 9 to rotate. At the same time, the T-shaped rod 18 is located inside the second round rod 17, so that the second round rod 17 rotates synchronously with the first round rod 9, causing both turntables 10 to rotate synchronously. With the cooperation of the inclined holes 11 and the sliding rods 702, the four square rods 701 at both ends extend outward, causing the arc-shaped rubber anti-slip pads 703 to come into contact with and support the inner walls of the adjacent steel pipes, aligning the two steel pipes. At the same time, when the T-shaped rod 18 rotates, it drives the convex rod 19 to slide in the spiral inclined hole 21. Under the action of the spiral inclined hole 21, the T-shaped rod 18 is inserted into the second round rod 17, causing the two outer rings 1 and the inner ring 3 to approach each other, so that the first insertion rod 4 is inserted into the first sleeve 401, and the second insertion rod 5 is inserted into the second sleeve 501. With the cooperation of multiple arc-shaped rubber anti-slip pads 703, the two steel pipes are aligned and squeezed against each other, reducing the gap between the two steel pipes, which is convenient for the welding work of the staff.

[0030] In summary, in the present invention, while supporting and positioning the butt ends of the two steel pipes through four arc-shaped rubber anti-slip pads 703, the two steel pipes are made to be in a concentric state without deviation. By using friction, the two steel pipes that are already close to each other are driven to squeeze against each other, further reducing the gap between the steel pipes during the welding process, preventing the gap between the two steel pipes from being too large, improving the butt welding efficiency of the steel pipes, and ensuring the butt welding accuracy of the steel pipes. The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art of the present invention can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. A caulking tool frame applicable to the installation of penstocks in pumped-storage power stations, comprising two outer rings (1), characterized in that, A plurality of connecting rods (2) are fixedly connected to the inner circumference of the two outer rings (1) at equal intervals. The other ends of the plurality of connecting rods (2) at the same end are fixedly connected to the same inner ring (3). Mounting plates (8) are fixedly connected to the ends of the two inner rings (3) away from each other. A first round rod (9) is rotatably connected to the middle of the inner side of one of the mounting plates (8), and a second round rod (17) is rotatably connected to the inner side of the other mounting plate (8). Turntables (10) are fixedly sleeved on the first round rod (9) and the second round rod (17) near the inner rings (3) on the same side. Four inclined holes (11) are equidistantly formed in the circumferences of the two turntables (10). A T-shaped rod (18) is fixedly connected to the end of the first round rod (9) close to the second round rod (17). A chute adapted to the T-shaped rod (18) is formed in the end of the second round rod (17) close to the first round rod (9). Convex rods (19) are fixedly connected to both sides of the end of the T-shaped rod (18) close to the second round rod (17). Connecting plates (20) are fixedly connected to both ends of the inner side of the inner ring (3) close to the second round rod (17). The other ends of the two connecting plates (20) are fixedly connected to the same cylinder (12). Two spiral inclined holes (21) are formed in the circumferential surface of the cylinder (12). The two convex rods (19) are respectively slidably connected in the adjacent spiral inclined holes (21).

2. The caulking tooling rack applicable to the penstock installation of a pumped-storage power station according to claim 1, characterized in that Four square tubes (7) are fixedly connected to the outer circumferences of the two outer rings (1) at equal intervals. A square rod (701) is slidably sleeved in each square tube (7). A sliding rod (702) is fixedly connected to the end of each square rod (701) close to the inner ring (3) on the same side. An arc-shaped rubber anti-slip pad (703) is fixedly connected to the other end of each square rod (701).

3. The caulking tooling rack applicable to the penstock installation of a pumped storage power station according to claim 2, characterized in that Each sliding rod (702) is slidably connected in the adjacent inclined hole (11).

4. The caulking tooling rack applicable to the penstock installation of a pumped-storage power station according to claim 1, characterized in that, A worm gear (16) is fixedly sleeved on the circumferential surface of the first round rod (9) near the inner ring (3) on the same side. A mounting frame (13) is fixedly connected to the inner side of the inner ring (3) on this side. A torque motor (14) is fixedly connected to the other end of the mounting frame (13). A worm (15) is fixedly connected to the output end of the torque motor (14). The worm (15) meshes with the worm gear (16).

5. The caulking tooling frame applicable to the penstock installation of a pumped storage power station according to claim 1, characterized in that, A plurality of first insertion rods (4) are fixedly connected to the inner circumference of one of the outer rings (1) at equal intervals. A plurality of first sleeves (401) are fixedly connected to the inner circumference of the other outer ring (1) at equal intervals. Each first insertion rod (4) is slidably inserted into the adjacent first sleeve (401).

6. The seam pressing tooling frame applicable to the penstock installation of a pumped storage power station according to claim 1, characterized in that A plurality of second insertion rods (5) are fixedly connected to the inner circumference of one of the inner rings (3) at equal intervals. A plurality of second sleeves (501) are fixedly connected to the inner circumference of the other inner ring (3) at equal intervals. Each second insertion rod (5) is slidably inserted into the adjacent second sleeve (501).

7. The caulking tooling rack applicable to the penstock installation of a pumped-storage power station according to claim 1, characterized in that Rollers (6) are fixedly connected to both ends of the bottom of the circumferential outer walls of the two outer rings (1).

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