Nuclear engineering pipeline sealing device

Abstract

The utility model discloses a nuclear engineering pipeline sealing device which comprises a flexible metal plate and a cross beam, a sealing gasket is fixed to the inner bottom wall of the flexible metal plate, a sliding groove is formed in the lower surface of the cross beam, two symmetrical sliding blocks are connected into the sliding groove in a sliding mode, and mounting grooves are formed in the bottoms of the sliding blocks. The two ends of the flexible metal plate are fixedly connected with butt joint assemblies connected with the mounting grooves in an inserted mode. According to the device, the flexible metal plate, the cross beam, the sealing gasket, the two sliding blocks, the two-way lead screw and the extrusion assembly are arranged, the two ends of the flexible metal plate are fixedly connected with the two sliding blocks through the butt joint assembly, the two-way lead screw is rotated to drive the two sliding blocks to move during installation, so that the distance between the two sliding blocks is smaller than the diameter of a pipeline, and then the pipeline is extruded through the extrusion assembly; the sealing gasket on the inner side wall of the flexible metal plate is tightly attached to the leakage position of the pipeline, and the device can adapt to installation of various pipelines with different pipe diameters and has better universality.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline sealing technical field especially relates to a nuclear engineering pipeline sealing device. BACKGROUND

[0002] Nuclear engineering pipeline refers to the pipeline system used for transporting nuclear fuel, coolant and control medium in nuclear power plants. These pipelines play a crucial role in the safety and operation of nuclear power plants. The definition, standards, classification, materials and manufacturing process of nuclear engineering pipelines have strict requirements and standards. The standards for nuclear engineering pipelines are very strict, not only need to meet the relevant regulations of the state, but also need to meet international standards, such as ASME standard requires that nuclear grade pipeline must be subjected to radioactive detection to ensure that it is free of defects and cracks.

[0003] At present, the treatment of pipeline breakage is generally divided into welding treatment and temporary sealing treatment. However, welding treatment needs to stop the whole system before welding, which affects production efficiency. Through retrieval, the patent with publication number CN218208411U discloses a device for sealing and strength protection of pipeline breakage in nuclear power plant, which realizes temporary sealing of the pipeline by setting a clamp to extrude and fix the sealing pad at the pipeline leakage position. However, since the size of the clamp is fixed, this device can only deal with pipeline sealing of a single size. If the diameters of the pipelines are different, the device needs to be customized according to the size of the pipeline, and the universality of installation is poor, so further improvement is needed. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a nuclear engineering pipeline sealing device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nuclear engineering pipeline sealing device, comprising a flexible metal plate and a crossbeam, a sealing pad is fixed on the inner bottom wall of the flexible metal plate, a sliding groove is formed on the lower surface of the crossbeam, two symmetrical sliding blocks are slidably connected in the sliding groove, an installation slot is formed on the bottom of the sliding block, a butt joint assembly is fixedly connected at both ends of the flexible metal plate and inserted into the installation slot, a double-directional screw rod is rotatably connected in the sliding groove through a bearing, the double-directional screw rod penetrates through the two sliding blocks and is threadedly connected with the two sliding blocks, and an extrusion assembly is fixedly connected on both sides of the middle part of the crossbeam.

[0006] Further, the butt joint assembly comprises an insertion block fixedly connected with the flexible metal plate, the insertion block is inserted into the installation slot, a recess is formed on the side wall of the insertion block, a spring is fixedly connected on the inner side wall of the recess, a clamping rod is fixedly connected at the other end of the spring, and a clamping hole for clamping the clamping rod is formed on the side of the installation slot close to the clamping rod.

[0007] Further, the end of the clamping rod away from the spring is designed as a round head.

[0008] Further, the double-way screw rod extends to the outside of the crossbeam and is fixedly connected with a first nut.

[0009] Further, the extrusion assembly comprises a side plate fixed to the outer side wall of the crossbeam, a screw rod penetrating and threadedly connected to the side plate away from the crossbeam, and a second nut fixedly connected to the top end of the screw rod.

[0010] Further, the bottom end of the screw rod is rotatably connected with a pressing plate through a bearing.

[0011] The utility model discloses the beneficial effect of:

[0012] The utility model discloses in using, a kind of nuclear engineering pipeline sealing device, set up flexible metal plate, crossbeam, sealing pad, two sliding blocks, double-way screw rod and extrusion assembly, the both ends of flexible metal plate are fixedly connected with two sliding blocks by butt joint component, when installation, rotate double-way screw rod and drive two sliding blocks to move so that the distance between two sliding blocks is less than pipeline diameter, then extrude by extrusion assembly, so that the sealing pad of the inner side wall of flexible metal plate is closely attached with pipeline leakage, the device can adapt to the pipeline installation of different pipeline diameter, with better versatility. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical scheme of the utility model, the following will be to the specific implementation mode description needed to use the drawing briefly introduced, obviously, the following description in the drawing is only some embodiments of the utility model, for the person skilled in the art comes, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0014] Figure 1 The overall perspective view of the utility model;

[0015] Figure 2 The overall sectional view of the utility model;

[0016] Figure 3 The overall sectional view of the utility model; Figure 2 The enlarged view of A in the figure.

[0017] The following are the reference signs:

[0018] 1, flexible metal plate;2, crossbeam;21, sliding groove;3, sealing pad;4, sliding block;41, installation slot;42, clamping hole;5, butt joint component;51, plug;52, recess;53, spring;54, clamping rod;6, double-way screw rod;7, first nut;8, extrusion assembly;81, side plate;82, screw rod;83, pressing plate;84, second nut. DETAILED DESCRIPTION

[0019] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-3 As shown, a sealing device for a nuclear engineering pipeline is disclosed, comprising a flexible metal plate 1 and a crossbeam 2. A sealing gasket 3 is fixed to the inner bottom wall of the flexible metal plate 1. A groove 21 is provided on the lower surface of the crossbeam 2. Two symmetrical sliders 4 are slidably connected inside the groove 21. An installation groove 41 is provided at the bottom of the sliders 4. A docking assembly 5 that inserts into the installation groove 41 is fixedly connected to both ends of the flexible metal plate 1. A bidirectional screw 6 is rotatably connected inside the groove 21 through a bearing. The bidirectional screw 6 passes through the two sliders 4 and is threadedly connected to the two sliders 4. An extrusion assembly 8 is fixedly connected to both sides of the middle part of the crossbeam 2.

[0021] The docking assembly 5 includes a plug 51 fixedly connected to the flexible metal plate 1, and the plug 51 is inserted into the mounting groove 41. The side wall of the plug 51 has a groove 52, and a spring 53 is fixedly connected to the inner side wall of the groove 52. The other end of the spring 53 is fixedly connected to a locking rod 54. The mounting groove 41 has a locking hole 42 for locking the locking rod 54 on the side near the locking rod 54.

[0022] When it is necessary to connect the flexible metal plate 1 and the slider 4, first squeeze the clamping rod 54 back into the groove 52, then insert the insert 51 into the mounting groove 41, and then the spring 53 will squeeze the clamping rod 54 into the clamping hole 42, thereby realizing the fixed connection between the insert 51 and the slider 4, and thus realizing the fixed connection between the flexible metal plate 1 and the slider 4.

[0023] During disassembly, first squeeze the lever 54 to disengage it from the locking hole 42, and then pull the insert 51 out of the mounting slot 41.

[0024] The end of lever 54 away from spring 53 has a rounded design.

[0025] The end of the lever 54 is designed to be round so that when the insert block 51 is pulled out, the lever 54 can more easily disengage from the locking hole 42.

[0026] One end of the double-ended lead screw 6 extends to the outside of the crossbeam 2 and is fixedly connected to the first nut 7.

[0027] By turning the first nut 7 with a wrench, the first nut 7 drives the double-ended lead screw 6 to rotate, and the double-ended lead screw 6 drives the two sliders 4 to slide along the slide groove 21. Therefore, by turning the first nut 7 in the forward or reverse direction, the two sliders 4 can be driven to move closer or further apart, thereby driving the two ends of the flexible metal plate 1 to move.

[0028] The extrusion assembly 8 includes a side plate 81 fixed to the outer wall of the crossbeam 2. A screw 82 is threadedly connected to the side of the side plate 81 away from the crossbeam 2. A second nut 84 is fixedly connected to the top of the screw 82.

[0029] By rotating the second nut 84, the screw 82 is moved, allowing the screw 82 to press against the pipe surface, thereby deforming the flexible metal plate 1. The deformed flexible metal plate 1 will press against the sealing gasket 3, making the sealing gasket 3 fit tightly against the pipe surface, thus achieving a temporary seal at the pipe break.

[0030] A pressure plate 83 is rotatably connected to the bottom end of the screw 82 via a bearing. The pressure plate 83 can increase the contact area of ​​the screw 82 extruding the pipe, increase the stability of the extrusion, and prevent excessive pressure at the point where the pipe is extruded.

[0031] Working principle: The flexible metal plate 1 is wrapped around the pipe, and the sealing gasket 3 is placed on the surface of the pipe rupture. Then, the two ends of the flexible metal plate 1 are fixedly connected to the two sliders 4 through the docking assembly 5. Then, the first nut 7 is rotated to drive the two sliders 4 to move closer to each other until the distance between the two sliders 4 is slightly smaller than the outer diameter of the pipe. Then, the second nuts 84 of the two extrusion assemblies 8 are rotated respectively, thereby driving the two screws 82 and the pressure plate 83 to move. The pressure plate 83 presses against the pipe surface. As the screws 82 press against the pipe surface, the flexible metal plate 1 is stretched and deformed, thereby pressing the sealing gasket 3 against the pipe surface, thus sealing the pipe rupture. This device can be adapted to the installation of pipes with different diameters and has better installation versatility.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A nuclear engineering piping sealing device, characterized by: The utility model provides a flexible metal plate (1) and crossbeam (2) including, the sealing gasket (3) is fixed with in the bottom wall of flexible metal plate (1), the slide groove (21) is seted up in the lower surface of crossbeam (2), two symmetrical sliding blocks (4) are connected with in the slide groove (21) inside sliding, the installation slot (41) is seted up in the bottom of sliding block (4), the butt joint subassembly (5) of flexible metal plate (1) both ends fixed connection is inserted with installation slot (41), the bidirectional screw rod (6) is rotatably connected through bearing in the slide groove (21) inside, the bidirectional screw rod (6) is passed through two sliding blocks (4) and is connected with two sliding blocks (4) screw, and the extrusion subassembly (8) is fixedly connected with in crossbeam (2) middle two sides.

2. A nuclear engineering piping sealing device according to claim 1, characterized by: The butt joint subassembly (5) includes the plug block (51) of fixed connection with flexible metal plate (1), and the plug block (51) is inserted in the inside of installation slot (41), the recess (52) is seted up in the lateral wall of plug block (51), the spring (53) is fixedly connected with in the recess (52) inner lateral wall, the other end of spring (53) is fixedly connected with the clamping rod (54), and the clamping hole (42) for clamping into the clamping rod (54) is seted up in the side of installation slot (41) near clamping rod (54).

3. A nuclear engineering piping sealing device according to claim 2, characterized by: The clamping rod (54) is designed as a round head away from the spring (53) one end.

4. A nuclear engineering piping sealing device according to claim 1, characterized by: The first nut (7) is fixedly connected with one end of bidirectional screw rod (6) extends to the outside of crossbeam (2).

5. A nuclear engineering piping sealing device according to claim 1, wherein: The extrusion subassembly (8) includes the side plate (81) of fixed in the lateral wall of crossbeam (2), and the screw rod (82) is screwed and is rotatably connected with in the side plate (81) away from crossbeam (2) side penetrates, and the second nut (84) is fixedly connected with in the screw rod (82) top.

6. A nuclear engineering piping sealing device according to claim 5, wherein: The pressing plate (83) is rotatably connected through bearing with in the screw rod (82) bottom end.

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