Online repairing device for leakage point of steam-water pipeline of power station

Abstract

The utility model belongs to the technical field of power plant safety production, and discloses a power plant steam-water pipeline leakage point on-line repairing device which comprises a repairing patch and a hydraulic repairing transmission mechanism, the hydraulic repairing transmission mechanism comprises an anti-skid V-shaped upper fixing device and a lower fixing device, and a hydraulic oil cylinder is fixedly installed at one end of the top of the anti-skid V-shaped upper fixing device. A leakage stopping frame is rotationally installed at the end, away from the hydraulic oil cylinder, of the top of the anti-skid V-shaped upper fixing device, a leakage stopping guide rail groove is formed in the surface of the leakage stopping frame, a positioning clamping groove is formed in the end, away from the anti-skid V-shaped upper fixing device, of the leakage stopping frame, and the end, located below the positioning clamping groove, of the threaded column is in threaded connection with a repairing patch. On the premise that personal safety is guaranteed, a thermodynamic system does not need to be shut down to repair the pipeline leakage point, the treatment effect is reliable, personal safety of operators in the leakage point repairing process is guaranteed to the maximum extent, and the pipeline leakage point repairing device is simple in structure, wide in application range, low in manufacturing cost and extremely high in generalization performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of safe production of power plants, in particular to an online repair device for leakage points of steam-water pipelines in power plants. Background Art

[0002] As the main power generation facility in my country's current energy structure, thermal power plants have complex systems, among which high-temperature and high-pressure steam-water pipelines are widely distributed. After the unit has been running for a period of time, due to the manufacturing quality of the pipeline itself and the scouring of the medium during operation, the steam-water pipeline often causes leakage points, especially the steam drain pipeline, because the steam-liquid mixing intensifies the scouring of the pipeline, thus causing leakage points. The leakage of the medium seriously affects the safety and economy of the unit, so the leakage points need to be repaired in time. Since some pipelines themselves do not have corresponding isolation valves and are directly connected to the main system, for personal safety considerations, the treatment of leakage points requires the entire corresponding thermal system to be shut down, and online leakage point repair cannot be performed. As a result, the unit output is limited or even unplanned shutdown events occur. Therefore, a device that can repair the leakage points of steam-water pipelines online under the premise of ensuring personal safety can effectively solve the above problems. Utility Model Content

[0003] The utility model provides an online repair device for leakage points in steam-water pipelines of power stations, which solves the existing problem that some pipelines do not have corresponding isolation valves and are directly connected to the main system. For personal safety reasons, the treatment of the leakage points requires the entire corresponding thermal system to be shut down, and online leakage point repair cannot be performed, thereby resulting in limited unit output or even unplanned shutdown events.

[0004] To achieve the above purpose, the utility model provides the following technical solution: an online repair device for a leakage point of a steam-water pipeline in a power station, comprising:

[0005] A repair patch, wherein a threaded hole is provided on the top of the repair patch, and a leak-proof glue filler and an annealed copper filler are embedded and installed on the bottom of the repair patch;

[0006] A hydraulic repair transmission mechanism, the hydraulic repair transmission mechanism comprises an anti-skid V-shaped upper fixing device and a lower fixing device, a hydraulic cylinder is fixedly installed on one end of the top of the anti-skid V-shaped upper fixing device, a hydraulic connecting joint is arranged on the hydraulic cylinder, a hydraulic connecting rod is arranged on the output end of the hydraulic cylinder, a hydraulic connecting shaft is fixedly installed on the end of the hydraulic connecting rod away from the hydraulic cylinder, a leak-stopping frame is rotatably installed on the end of the top of the anti-skid V-shaped upper fixing device away from the hydraulic cylinder, a leak-stopping guide groove is provided on the surface of the leak-stopping frame, and the hydraulic connecting shaft is movably installed in the inner cavity of the leak-stopping guide groove, a positioning slot is provided on the end of the leak-stopping frame away from the anti-skid V-shaped upper fixing device, a threaded column is movably installed in the positioning slot, a positioning nut is screwed on the end of the threaded column located above the positioning slot, and a repair patch is screwed on the end of the threaded column located below the positioning slot;

[0007] A hydraulic pump station, wherein the output end of the hydraulic pump station is connected with a hydraulic pipe, and the hydraulic pump station is connected with a hydraulic connection joint through the hydraulic pipe.

[0008] Preferably, the leak-proof glue filler and the annealed copper filler are alternately filled at the bottom of the repair patch.

[0009] Preferably, a pipe clamp movable guide groove is provided on the surface of the anti-slip V-shaped upper fixing device, a pipe clamp connecting shaft is movably installed in the pipe clamp movable guide groove, and one end of the pipe clamp connecting shaft is rotatably connected to an adjusting movable part.

[0010] Preferably, the adjusting movable part is composed of a vertical rod and a horizontal rod, the vertical rod is rotatably connected to the pipe clamp connecting shaft, the lower end of the horizontal rod is threaded with a pipe clamp positioning bolt, and the pipe clamp positioning bolt passes through the lower horizontal rod, the top of the pipe clamp positioning bolt is rotatably connected to the lower fixing device, and the bottom of the pipe clamp positioning bolt is fixedly installed with a pipe clamp positioning handwheel.

[0011] Preferably, a hydraulic pressure gauge and a hydraulic operating lever are installed on the hydraulic pump station.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] Under the premise of ensuring personal safety, the utility model does not need to stop the thermal system to repair the pipeline leakage point, the treatment effect is reliable, and the personal safety of the operators in the process of repairing the leakage point is guaranteed to the greatest extent. The utility model has a simple structure, a wide range of applications, a low manufacturing cost, and is highly popularizable. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model;

[0015] Figure 2 The structure of the repair patch of the utility model is shown in FIG. Figure 1 ;

[0016] Figure 3 The structure of the repair patch of the utility model is shown in FIG. Figure 2 ;

[0017] Figure 4 It is a schematic diagram of the connection structure of the anti-skid V-shaped upper fixing device and the lower fixing device of the utility model;

[0018] Figure 5 This is a schematic diagram of the repair state structure of the utility model;

[0019] Figure 6 This is a schematic diagram of the structure for repairing leaking points in bent pipes of the utility model;

[0020] Figure 7 for Figure 2 Bottom view.

[0021] In the figure: 1. threaded hole; 2. leak-proof glue filler; 3. annealed copper filler; 4. positioning nut; 5. positioning card slot; 6. pipe clamp connecting shaft; 7. pipe clamp moving guide groove; 8. anti-slip V-shaped upper fixing device; 801, adjusting movable part; 9. leak-stopping frame; 10. leak-stopping guide groove; 11. hydraulic connecting shaft; 12. hydraulic connecting rod; 13. hydraulic cylinder; 14. hydraulic connecting joint; 15. lower fixing device; 16. pipe clamp positioning bolt; 17. pipe clamp positioning handwheel; 18. hydraulic pipe; 19. hydraulic pressure gauge; 20. hydraulic operating lever; 21. hydraulic pump station. DETAILED DESCRIPTION

[0022] Combine the following Figure 1-7 The utility model is further described in detail.

[0023] Example 1: Reference Figure 1 , 2 , 4, 5 and 7, in this embodiment, in order to solve the problem that the existing online repair device for the leakage point of the steam-water pipeline of a power station cannot repair the pipeline leakage point without stopping the thermal system under the premise of ensuring personal safety, the utility model discloses an online repair device for the leakage point of the steam-water pipeline of a power station, comprising:

[0024] A repair patch, a threaded hole 1 is provided on the top of the repair patch, a plugging glue filler 2 and an annealed copper filler 3 are embedded and installed on the bottom of the repair patch, and the plugging glue filler 2 and the annealed copper filler 3 are alternately filled at the bottom of the repair patch;

[0025] A hydraulic repair transmission mechanism, the hydraulic repair transmission mechanism comprises an anti-skid V-shaped upper fixing device 8 and a lower fixing device 15, a hydraulic cylinder 13 is fixedly installed at one end of the top of the anti-skid V-shaped upper fixing device 8, a hydraulic connecting joint 14 is arranged on the hydraulic cylinder 13, a hydraulic connecting rod 12 is arranged at the output end of the hydraulic cylinder 13, a hydraulic connecting shaft 11 is fixedly installed at one end of the hydraulic connecting rod 12 away from the hydraulic cylinder 13, a leak-stopping frame 9 is rotatably installed at one end of the top of the anti-skid V-shaped upper fixing device 8 away from the hydraulic cylinder 13, a leak-stopping guide groove 10 is provided on the surface of the leak-stopping frame 9, and the hydraulic connecting shaft 11 is movably installed in the inner cavity of the leak-stopping guide groove 10, a positioning slot 5 is provided at one end of the leak-stopping frame 9 away from the anti-skid V-shaped upper fixing device 8, a threaded column is movably installed in the positioning slot 5, a positioning nut 4 is screwed to one end of the threaded column located above the positioning slot 5, and a repair patch is screwed to one end of the threaded column located below the positioning slot 5;

[0026] A pipe clamp moving guide groove 7 is provided on the surface of the anti-slip V-shaped upper fixing device 8, a pipe clamp connecting shaft 6 is movably installed in the pipe clamp moving guide groove 7, one end of the pipe clamp connecting shaft 6 is rotatably connected with an adjusting movable part 801, and the adjusting movable part 801 is composed of a vertical rod and a horizontal rod, the vertical rod is rotatably connected to the pipe clamp connecting shaft 6, the lower end of the horizontal rod is screwed with a pipe clamp positioning bolt 16, and the pipe clamp positioning bolt 16 passes through the lower horizontal rod, the top of the pipe clamp positioning bolt 16 is rotatably connected to the lower fixing device 15, and the bottom of the pipe clamp positioning bolt 16 is fixedly installed with a pipe clamp positioning handwheel 17;

[0027] The hydraulic pump station 21 has its output end connected to a hydraulic pipe 18 . The hydraulic pump station 21 is connected to the hydraulic connection joint 14 through the hydraulic pipe 18 . A hydraulic pressure gauge 19 and a hydraulic operating lever 20 are installed on the hydraulic pump station 21 .

[0028] The specific working principle is: the repair patch is suitable for different specifications of the corresponding pipe diameter of the pipeline (patches of different specifications such as Φ28-Φ108). Different types of patches are selected according to different pipe diameters. The repair patch is composed of three basic materials. The base material is carbon steel (corresponding alloy material for alloy pipes). The middle part is the leak-proof glue filler 2 and there are two circles of annealed copper filler 3 around it. It is combined with the hydraulic repair transmission mechanism through the threaded hole 1. The hydraulic repair transmission mechanism applies pressure to the repair patch to seal the leakage position. The patch is welded to the pipeline to complete the repair of the leakage point.

[0029] The specific repair steps are:

[0030] Initial state of repair: First, place the hydraulic repair transmission mechanism on the pipe to be repaired, so that the anti-skid V-shaped upper fixture 8 is clamped on the upper part of the pipe, and the pipe clamp positioning hand wheel 17 is adjusted to tighten the pipe clamp positioning bolt 16, so that the lower fixture 15 is firmly fixed on the pipe to be repaired, and the angle of the positioning nut 4 in the positioning slot 5 and the relative position of the pipe clamp connecting shaft 6 and the pipe clamp moving guide slot 7 are adjusted according to the position of the leakage point, and at the same time, ensure that there are no obstacles blocking the direction of the leaking medium. Avoid the leaking medium from hurting people.

[0031] Working status of repair: After the relative position of the hydraulic repair transmission mechanism is fixed, the hydraulic connecting joint 14 is connected to the hydraulic pump station 21 through the hydraulic pipe 18. The operator is now away from the leaking pipe at a relatively safe distance and operates the hydraulic operating lever 20 to prevent the medium from being sprayed out disorderly and injuring people during the repair process of the leakage point. By operating the hydraulic operating lever 20, the hydraulic cylinder 13 drives the hydraulic connecting rod 12 to make the hydraulic connecting shaft 11 slide in the leak-stopping guide groove 10. The hydraulic connecting shaft 11 drives the leak-stopping frame 9 to move to the leakage point and firmly press the leakage point. The pressure is adjusted by observing the hydraulic pressure gauge 19 until the leaking medium is completely sealed.

[0032] Removal of the repair device: After the leaking medium is completely sealed, use electric welding to repair the repair patch and the pipe wall, unscrew the positioning nut 4 to remove the leakage point repair device, and complete the leakage point repair work.

[0033] Example 2, refer to Figure 3 and 6 In order to solve the problem of safety in the repair of existing bent pipe leaks, in this embodiment, based on the same concept as the above-mentioned embodiment 1, the online repair device for the leak of a steam-water pipeline in a power station also includes:

[0034] The repair patch is in the shape of an arc that fits the bent pipe.

[0035] The specific working principle is: the repair steps of the leakage point of the bent pipe are the same as the operation process in Example 1, and the repair patch needs to be replaced with an arc-shaped repair patch that fits the bent pipe and is installed on the hydraulic repair transmission mechanism through a threaded column.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] 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. An online repair device for a leaking point in a steam-water pipeline of a power station, characterized by: include, A repair patch, wherein a threaded hole is provided on the top of the repair patch, and a leak-proof glue filler and an annealed copper filler are embedded and installed on the bottom of the repair patch; A hydraulic repair transmission mechanism, the hydraulic repair transmission mechanism comprises an anti-skid V-shaped upper fixing device and a lower fixing device, a hydraulic cylinder is fixedly installed on one end of the top of the anti-skid V-shaped upper fixing device, a hydraulic connecting joint is arranged on the hydraulic cylinder, a hydraulic connecting rod is arranged on the output end of the hydraulic cylinder, a hydraulic connecting shaft is fixedly installed on the end of the hydraulic connecting rod away from the hydraulic cylinder, a leak-stopping frame is rotatably installed on the end of the top of the anti-skid V-shaped upper fixing device away from the hydraulic cylinder, a leak-stopping guide groove is provided on the surface of the leak-stopping frame, and the hydraulic connecting shaft is movably installed in the inner cavity of the leak-stopping guide groove, a positioning slot is provided on the end of the leak-stopping frame away from the anti-skid V-shaped upper fixing device, a threaded column is movably installed in the positioning slot, a positioning nut is screwed on the end of the threaded column located above the positioning slot, and a repair patch is screwed on the end of the threaded column located below the positioning slot; A hydraulic pump station, wherein the output end of the hydraulic pump station is connected with a hydraulic pipe, and the hydraulic pump station is connected with a hydraulic connection joint through the hydraulic pipe.

2. The online repair device for leaking points in steam and water pipelines of power stations according to claim 1 is characterized by: The leak-proof glue filler and the annealed copper filler are alternately filled at the bottom of the repair patch.

3. The online repair device for leaking points in steam and water pipelines of power stations according to claim 1 is characterized by: A pipe clamp moving guide groove is provided on the surface of the anti-slip V-shaped upper fixing device, a pipe clamp connecting shaft is movably installed in the pipe clamp moving guide groove, and one end of the pipe clamp connecting shaft is rotatably connected to an adjusting movable part.

4. The on-line repair device for leaking points in steam and water pipelines of power stations according to claim 3 is characterized by: The adjusting movable part is composed of a vertical rod and a horizontal rod. The vertical rod is rotatably connected to the pipe clamp connecting shaft. The lower end of the horizontal rod is threaded with a pipe clamp positioning bolt, and the pipe clamp positioning bolt passes through the lower horizontal rod. The top of the pipe clamp positioning bolt is rotatably connected to the lower fixing device, and the bottom of the pipe clamp positioning bolt is fixedly installed with a pipe clamp positioning handwheel.

5. The on-line repair device for leaking points in steam and water pipelines of power stations according to claim 1 is characterized by: A hydraulic pressure gauge and a hydraulic operating lever are installed on the hydraulic pump station.

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