Pipeline crevasse leaking stoppage drainage device

Abstract

The invention belongs to the technical field of nuclear power, and particularly relates to a pipeline crevasse leaking stoppage drainage device. The whole pipeline crevasse leaking stoppage drainage device is of a vertical structure, the retaining rings are fixed through the fixing screws, and the fastening performance is high; each retaining ring can fully clamp a pipeline, so that good stability is achieved, the structure is relatively compact, the occupied space is small when the retaining ring is fixed on the pipeline, the connecting mounting plate can be directly held by hand for alignment, the retaining ring is suitable for working conditions of different pipelines, and position correction operation is easy; the end portion of the sealing ring and the cylindrical wall face of the high-temperature pipeline can form sealing so as to adapt to the working conditions of pipeline weld joint protrusions, surface pits and the like, the sealing performance is good, and therefore the drainage pipe for blocking the pipeline crevasse is pressed on the damaged position of the pipeline, and leaked jet high-temperature steam or water flow is buffered and drained. And a working environment is provided for nondestructive testing of the high-temperature pipeline crevasses and peripheral areas.

Description

Technical Field

[0001] This invention belongs to the field of nuclear power technology, specifically relating to a pipe rupture sealing and drainage device. Background Technology

[0002] During the operation of nuclear power and thermal power units, there has always been a problem of high-temperature steam or water leakage from conventional island pipelines due to defects (typically, the temperature of the medium inside the pipeline can reach up to 300 degrees Celsius). For power plants, this situation directly affects the safe and stable operation of the units. If a shutdown is caused by a pipeline leak, it will result in serious economic losses. When a pipeline leak (steam or water) occurs in an operating unit, since it is impossible to isolate the leak alone, pressurized leak sealing operations are usually performed to avoid shutdown or reduce operating pressure and temperature. The main measures taken are grouting and installing clamps. Before grouting and installing clamps, if the thinning of the rupture area is not understood, direct operation may lead to the expansion of the defect, causing burns to personnel, or even pipe bursts, directly threatening the lives of on-site workers. For the detection of pipeline ruptures and surrounding areas, due to the excessive pressure of the medium inside the pipeline and the presence of jet-like high-temperature steam or water flow, there is currently a lack of effective detection methods. Therefore, it is urgent to eliminate the adverse effects of high-temperature steam or water jets ejected from high-temperature and high-pressure leaks in order to facilitate the implementation of non-destructive testing of broken pipes and measure the thinning or damage of the broken sections. Summary of the Invention

[0003] To overcome the problems existing in related technologies, a pipe rupture plugging and drainage device is provided.

[0004] A pipe rupture sealing and drainage device, the method comprising: multiple fixing components, a connecting plate, a self-locking screw, a sealing ring, a drainage straight pipe, a sealing universal joint, a drainage pipe, and a locking cap, each fixing component comprising: a pressure ring, a buckle ring, a fixing block, and a fastening screw; The connecting plate is fixedly connected to the upper end of the self-locking screw. The drainage straight tube is a blind tube structure with an open lower end and a closed upper end. The lower threaded end of the self-locking screw is rotatably connected to the upper end of the drainage straight tube using a self-locking thread. Tightening the drainage straight tube allows it to move axially. The pressure ring and the retaining ring of each fixing component are fixedly connected by fastening screws and surround the outer wall of the pipe. The retaining ring is fixedly connected to the connecting plate by a fixing block away from the outer wall of the pipe. One end of the sealed universal joint is connected to the side wall of the drainage straight pipe and is in communication with the drainage straight pipe. The other end of the sealed universal joint is connected to the drainage pipe. The orientation of the drainage pipe can be freely adjusted as needed by adjusting the sealed universal joint. The lower end of the drainage straight pipe is threadedly connected to the locking cap. The locking cap has a hollow structure inside, and a sealing ring is fitted onto the edge of the bottom opening of the locking cap. The sealing ring and locking cap can cover the outside of the pipe rupture. Rotating the drainage straight pipe toward the pipe squeezes the sealing ring until the rupture is sealed, so that the high-temperature steam leaking from the pipe rupture is guided to the collection container through the drainage straight pipe, the sealing universal joint and the drainage pipe in sequence.

[0005] In one possible implementation, the connecting plate is provided with multiple mounting interfaces for fixing the fixing blocks and multiple mounting interfaces for installing self-locking screws.

[0006] In one possible implementation, the sealing ring has multiple protrusions arranged alternately along the direction from the inner ring to the outer ring on the end face of the pipe.

[0007] In one possible implementation, each protrusion is an arc shape that matches the inner curvature of the sealing ring.

[0008] In one possible implementation, the sealing ring is made of perfluoroether rubber.

[0009] In one possible implementation, both the locking cap and the drainage tube are made of polyetheretherketone (PEEK).

[0010] In one possible implementation, the drainage conduit is made of polytetrafluoroethylene or Teflon.

[0011] The beneficial effects of this disclosure are as follows: The pipeline rupture sealing and drainage device provided by this disclosure has an overall vertical structure, and the buckles are fixed by fixing screws, which has strong fastening; each buckle can fully clamp the pipeline, which has good stability, the structure is relatively compact, and it occupies little space when fixed on the pipeline. The connecting plate can be directly aligned by hand, which can be applied to different pipeline working conditions and is easy to calibrate; the end of the sealing ring can form a seal with the cylindrical wall of the high-temperature pipeline to adapt to working conditions such as pipeline weld protrusions and surface pits, and the sealing performance is good. In this way, the drainage pipe sealing the pipeline rupture is pressed tightly at the pipeline rupture, which buffers and drains the leaking jet-like high-temperature steam or water flow, and provides a working environment for non-destructive testing of the high-temperature pipeline rupture and surrounding area. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of a pipe rupture sealing and drainage device shown in an embodiment of this disclosure.

[0013] Figure 2 This is an installation schematic diagram of a pipe rupture sealing and drainage device shown in an embodiment of the present disclosure.

[0014] Figure 3 This is another installation schematic diagram of a pipe rupture sealing and drainage device shown in an embodiment of this disclosure.

[0015] Figure 4This is a partial schematic diagram of a pipe rupture sealing and drainage device shown in an embodiment of this disclosure.

[0016] In the picture: 1. Pressure ring; 2. Buckle ring; 3. Fixing block; 4. Connecting plate; 5. Fastening screw; 6. Self-locking screw; 7. Sealing ring; 8. Drainage straight pipe; 9. Sealed universal joint; 10. Drainage pipe; 11. Locking cap; 13. High-temperature curved pipe; 15. High-temperature straight pipe. Detailed Implementation

[0017] The present disclosure will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Unless otherwise defined, the technical and scientific terms used in this disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains; the terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure; the term "comprising" and any variations thereof in this disclosure are intended to cover non-exclusive inclusion. Clearly, the embodiments described in this disclosure are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.

[0019] In this disclosure, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this disclosure. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0020] like Figure 1 As shown, the pipe rupture sealing and drainage device disclosed herein includes: multiple fixing components, connecting plate 4, self-locking screw 6, sealing ring 7, drainage straight pipe 8, sealing universal joint 9, drainage pipe 10, and locking cap 11. Each fixing component includes: pressure ring 1, buckle ring 2, fixing block 3, and fastening screw 5.

[0021] The aforementioned pipe rupture sealing and drainage device is a vertical structure. In the installed state, the connecting plate 4 is fixedly connected to the upper end of the self-locking screw 6. The drainage straight pipe 8 is a blind pipe structure with an open lower end and a closed upper end, used to collect and drain the high-temperature steam leaking from the pipe. The upper end of the drainage straight pipe 8 has a threaded hole, and the lower threaded end of the self-locking screw 6 is rotatably connected to the upper end of the drainage straight pipe 8 using a self-locking thread. Tightening the drainage straight pipe 8 allows it to move axially, thereby adjusting the relative distance between the connecting plate 4 and the drainage straight pipe 8 and positioning and locking the drainage straight pipe 8.

[0022] The pressure ring 1 and the buckle 2 of each fixing component are fixedly connected by fastening screws 5 and surround the outer wall of the pipe. The buckle 2 is fixedly connected to the connecting plate 4 by fixing block 3 away from the outer wall of the pipe. Multiple fixing components and connecting plate 4 cooperate to clamp the pipe and form a stable fixing frame on the outside of the pipe for supporting and positioning the straight drainage pipe. It is also easy for personnel to hold and position, and easy to operate.

[0023] In one possible implementation, the connecting plate 4 is provided with multiple mounting interfaces for fixing the fixing blocks 3 and multiple mounting interfaces for installing the self-locking screws 6. Different numbers of fixing components can be selected according to the actual shape of the pipe, and the positional relationship between each fixing component and the drainage straight pipe 8 can be adjusted according to installation needs. For example, the drainage straight pipe 8 can be located between multiple fixing components (see...). Figure 2 (Applicable to high-temperature straight pipe 15), or the drainage straight pipe 8 located on one side of multiple fixed components (see...). Figure 3 This is suitable for high-temperature curved pipes (13). In this way, it can flexibly adapt to different pipe installation requirements.

[0024] One end of the sealing universal joint 9 is connected to the side wall of the drainage straight pipe 8 and is in communication with the drainage straight pipe 8. The other end of the sealing universal joint 9 is connected to the drainage pipe 10. The orientation of the drainage pipe 10 can be freely adjusted as needed by adjusting the sealing universal joint 9. The lower outer wall of the drainage straight pipe 8 has a threaded groove, and the inner wall of the locking cap 11 has a threaded groove. The outer wall of the drainage straight pipe 8 is threadedly connected to the inner wall of the locking cap 11. The locking cap 11 has a hollow internal structure. A sealing ring 7 is fitted onto the edge of the bottom opening of the locking cap 11. During use, the sealing ring 7 and the locking cap 11 cover the outside of the pipe rupture. Rotating the drainage straight pipe 8 towards the pipe compresses the sealing ring 7 until the rupture is sealed, allowing the high-temperature steam leaking from the pipe rupture to be guided sequentially through the drainage straight pipe 8, the sealing universal joint 9, and the drainage pipe 10 to the collection container.

[0025] In one possible implementation, the sealing ring 7 has multiple protrusions arranged alternately along the direction from the inner ring to the outer ring on the end face of the pipe. This allows the sealing ring 7 to fit with the cylindrical surface of the pipe wall when it is compressed, forming a multi-layer sealing structure that can overcome the influence of pipe welds, surface pits, and other factors on the sealing performance.

[0026] In one possible implementation, all components of the device are made of high-temperature resistant materials to adapt to the high-temperature working conditions of leak sealing and drainage. For example, the sealing ring 7 can be made of perfluoroether rubber, which is resistant to steam and high temperature, and can withstand temperatures up to 300°C. The locking cap 11 and the drainage straight pipe 8 can be made of polyetheretherketone (PEEK), which can work for a long time in a high-temperature environment of 260°C. The drainage pipe 10 can be made of polytetrafluoroethylene or Teflon, which can also withstand a high-temperature environment of 260°C.

[0027] In one application example, taking the use of a high-temperature steam diversion device for the inspection of a certain specification pipeline in the conventional island of a nuclear power plant as an example, the implementation steps are described as follows: After determining the location of the pipe rupture, align the drainage straight pipe 8 with the rupture of pipe 15. Then, install each fixing component in sequence at the location of the rupture attachment. For each fixing component, press the adjusting pressure ring 1 onto one side of the outer wall of the high-temperature straight pipe 15, and press the retaining ring 2 onto the other side of the outer wall of the high-temperature straight pipe 15, so that the pressure ring 1 and retaining ring 2 are positioned opposite each other. Tighten and fix them with the fastening screws 5. After all fixing components are installed, slowly rotate the drainage straight pipe 8 to move it toward the pipe, adjust its height position, and apply force to press it against the rupture of the high-temperature straight pipe 15. After adjusting the angle of the drainage pipe 10 with the sealing universal elbow 9, the drainage pipe 1... The outlet end of 0 is fixed inside the collection device to drain steam or water. Then, the operator tightens the fastening screws 5 of the pressure ring 1 and the buckle ring 2, as well as the self-locking screw 6, so that the entire leak-stopping and drainage device is firmly fixed on the high-temperature straight pipe 15. The high-temperature water and steam are collected through the drainage straight pipe 8 and then discharged into the collection device through the drainage pipe 10, preventing further leakage and providing a construction environment for non-destructive testing. After the operation is completed, the operator holds the connecting plate 4 and applies force to push it onto the high-temperature straight pipe 15, loosens the fastening screws 5, removes the buckle ring 2, and then removes the leak-stopping and drainage device to proceed with the subsequent operation.

[0028] The pipeline rupture sealing and drainage device disclosed herein has a vertical structure. The retaining rings are fixed with screws, ensuring strong fastening. Each retaining ring can fully clamp the pipeline, providing good stability. The structure is relatively compact, occupying little space when fixed on the pipeline. The connecting plate can be directly aligned by hand, making it suitable for different pipeline conditions and easy to calibrate. The sealing ring end is provided with multiple raised structures (for example, each raised structure is an arc shape consistent with the inner arc of the sealing ring), which can form a multi-layer sealing structure with the cylindrical wall of the high-temperature pipeline to adapt to conditions such as pipeline weld protrusions and surface pits, providing good sealing performance. The main structure drainage straight pipe is made of non-metallic materials, providing working conditions for non-destructive testing of the rupture leakage site such as X-ray and magnetic particle testing. The main structure of the drainage device is made of high-temperature resistant materials such as polyetheretherketone and perfluoroether rubber, allowing the device to work stably for a long time in a high-temperature environment of 250°C without deformation of the overall structure.

[0029] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A pipe rupture sealing and drainage device, characterized in that, The method includes: multiple fixing components, connecting plate, self-locking screw, sealing ring, drainage straight pipe, sealing universal joint, drainage pipe, and locking cap. Each fixing component includes: pressure ring, buckle ring, fixing block and fastening screw. The connecting plate is fixedly connected to the upper end of the self-locking screw. The drainage straight tube is a blind tube structure with an open lower end and a closed upper end. The lower threaded end of the self-locking screw is rotatably connected to the upper end of the drainage straight tube using a self-locking thread. Tightening the drainage straight tube allows it to move axially. The pressure ring and the retaining ring of each fixing component are fixedly connected by fastening screws and surround the outer wall of the pipe. The retaining ring is fixedly connected to the connecting plate by a fixing block away from the outer wall of the pipe. One end of the sealed universal joint is connected to the side wall of the drainage straight pipe and is in communication with the drainage straight pipe. The other end of the sealed universal joint is connected to the drainage pipe. The orientation of the drainage pipe can be freely adjusted as needed by adjusting the sealed universal joint. The lower end of the drainage straight pipe is threadedly connected to the locking cap. The locking cap has a hollow structure inside, and a sealing ring is fitted onto the edge of the bottom opening of the locking cap. The sealing ring and locking cap can cover the outside of the pipe rupture. Rotating the drainage straight pipe toward the pipe squeezes the sealing ring until the rupture is sealed, so that the high-temperature steam leaking from the pipe rupture is guided to the collection container through the drainage straight pipe, the sealing universal joint and the drainage pipe in sequence.

2. The apparatus according to claim 1, characterized in that, The connecting plate is equipped with multiple mounting interfaces for fixing the fixing blocks and multiple mounting interfaces for installing self-locking screws.

3. The apparatus according to claim 1, characterized in that, The sealing ring has multiple raised structures arranged alternately from the inner ring to the outer ring on the end face of the pipe.

4. The apparatus according to claim 3, characterized in that, Each raised structure is an arc shape that matches the inner curvature of the sealing ring.

5. The apparatus according to claim 1, characterized in that, The sealing ring is made of perfluoroether rubber.

6. The apparatus according to claim 1, characterized in that, The locking cap and drainage tube are both made of polyetheretherketone (PEEK).

7. The apparatus according to claim 1, characterized in that, The drainage pipe is made of polytetrafluoroethylene or Teflon.

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