A pipe sealing device

Abstract

This invention proposes a pipe sealing device, comprising a sealing shell and a fastening element. The sealing shell includes at least two fixing elements, adjacent fixing elements being hinged together. The sealing shell has a fixed state and a detachable state. In the fixed state, the sealing shell is fitted onto the pipe. The fixing elements include a sidewall and an edge. The sidewall protrudes away from the pipe, and the edge is connected to the edge of the sidewall and extends towards the pipe. The sidewall and edge define a receiving groove. The fastening element is detachably connected to the sealing shell and includes a first locking portion and a second locking portion. In the fixed state, the first locking portion is connected to the second locking portion to fix the sealing shell onto the pipe. In the detachable state, the first locking portion is separated from the second locking portion to remove the sealing shell from the pipe. The pipe sealing device of this invention provides convenient fastening and also prevents liquid overflow.

Description

Technical Field

[0001] This invention relates to the field of pipeline leak sealing technology, and more specifically, to a pipeline leak sealing device. Background Technology

[0002] In water supply and drainage projects, pipelines undergo long-term operation, vibration, aging, wear, and other factors, leading to reduced pipeline strength and leaks. In workshops requiring uninterrupted water supply and drainage or factories requiring uninterrupted water cooling, pipeline leaks undoubtedly increase equipment operational safety and product production efficiency. When pipeline leaks occur, if they are not dealt with promptly or if temporary plugging is not performed, unplanned shutdowns and forced production stoppages may occur, seriously affecting production safety.

[0003] In related technologies, two semi-circular clamps are generally used to tighten the damaged and leaking pipe by means of threaded connection. However, during the tightening process, because the fluid flowing into the leaking pipe itself has a certain pressure, the leaking liquid will cause some obstruction to the clamp assembly. Furthermore, the liquid will gradually overflow from the gap between the clamp and the pipe wall and is prone to forming a certain jet, which will further hinder the tightening process and also cause destructive impact on the surrounding environment of the pipeline. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of the present invention provide a pipe sealing device that is easy to tighten and also prevents liquid overflow.

[0005] The pipe sealing device of this invention includes:

[0006] A leak-sealing housing includes at least two fixing members, with adjacent fixing members hinged together. The leak-sealing housing has a fixed state and a detached state. In the fixed state, the leak-sealing housing is fitted onto the pipe.

[0007] The fastener includes a sidewall and an edge, the sidewall protruding away from the pipe, the edge being connected to the edge of the sidewall and extending toward the pipe, the sidewall and the edge defining a receiving groove;

[0008] A snap-fit ​​component is detachably connected to the leak-sealing housing. The snap-fit ​​component includes a first snap-fit ​​portion and a second snap-fit ​​portion. In the fixed state, the first snap-fit ​​portion is connected to the second snap-fit ​​portion to fix the leak-sealing housing onto the pipe. In the disassembled state, the first snap-fit ​​portion is separated from the second snap-fit ​​portion to remove the leak-sealing housing from the pipe.

[0009] During the tightening process, the pipe sealing device of this invention can temporarily store the overflowing liquid in the receiving tank, which can prevent the liquid from gradually overflowing from the gap between the sealing device and the pipe wall, prevent the overflowing liquid from forming a jet, and also avoid the resistance formed by the overflowing liquid from hindering the tightening of the sealing device, making the tightening more convenient.

[0010] In some embodiments, the pipe sealing device of the present invention further includes ribs, the ribs being connected to the fixing member and located within the receiving groove, the extending direction of the ribs being consistent with the length direction of the sidewall, and there being a plurality of ribs, the plurality of ribs being arranged at intervals along the width direction of the sidewall, and in the fixed state, the ribs abutting against the outer peripheral wall of the pipe.

[0011] In some embodiments, the edge includes a first side portion and a second side portion arranged opposite each other along the length direction of the sidewall, with the first end of one of two adjacent ribs connected to the first side portion and the first end of the other rib connected to the second side portion, so as to divide the receiving groove into a plurality of communicating flow channels.

[0012] In some embodiments, the pipe sealing device of the present invention further includes a sealing element, wherein the sealing element is provided on both the first side adjacent to the pipe and the second side adjacent to the pipe, and in a plane orthogonal to the length direction of the sidewall, the distance of the sealing element to the pipe is less than or equal to the distance of the rib to the pipe.

[0013] In some embodiments, in a plane orthogonal to the length direction of the sidewall, the extension length of the seal is greater than the extension length of the first edge.

[0014] In two adjacent fasteners, the seal on one of the first edges and the seal on the other of the first edges are arranged at intervals along the length of the sidewall.

[0015] In some embodiments, the seal further includes a protrusion and a groove, the protrusion being disposed at a first end of the seal and the groove being disposed at a second end of the seal, wherein in two connected fasteners, the protrusion of the seal on one fastener engages within the groove of the seal on the other fastener.

[0016] In some embodiments, the pipe sealing device of the present invention further includes a pressure relief assembly, which includes a pressure relief housing and a pressure relief switch. The pressure relief housing is connected to one end of the fixing member along its length, and the pressure relief switch is disposed within the inner cavity of the pressure relief housing, and the pressure relief switch has a first position and a second position.

[0017] In the first position, the pressure relief switch blocks the internal cavity of the pressure relief housing from communicating with the outside.

[0018] In the second position, the pressure relief switch connects the inner cavity of the pressure housing to the outside.

[0019] In some embodiments, the cross-sectional profile of the sidewall is adapted to the cross-sectional profile of the pressure relief housing in a plane orthogonal to the length direction of the sidewall.

[0020] In some embodiments, the pressure relief assembly further includes a pressure relief valve, the first end of which is connected to the pressure relief housing, and in the second position, the pressure relief valve is opened to discharge the liquid in the containment tank.

[0021] In some embodiments, the pressure relief assembly further includes a fastener detachably connected to the pressure relief housing, the first end of the fastener abutting against the pressure relief switch to restrict movement of the pressure relief switch between the first position and the second position. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the pipe sealing device (fixed state and pressure relief switch in the first position) according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic diagram of the pipe sealing device (fixed state and pressure relief switch in the second position) according to an embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the pipe sealing device (disassembled state) according to an embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the pipe sealing device (disassembled state) according to an embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the pipe sealing device according to an embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the structure of the fixing component of the pipe sealing device according to an embodiment of the present invention.

[0028] Figure 7 This is a schematic diagram of the pressure relief component of the pipeline sealing device according to an embodiment of the present invention.

[0029] Figure 8 This is a schematic diagram of the pressure relief component of the pipeline sealing device according to an embodiment of the present invention.

[0030] Figure label:

[0031] Leak-stopping housing 1; fastener 11; side wall 111; edge 112; first side 1121; second side 1122; receiving groove 1123;

[0032] 2; First snap-fit ​​part 21; Second snap-fit ​​part 22;

[0033] Rib 3;

[0034] Seal 4; Protrusion 41; Groove 42;

[0035] Pressure relief assembly 5; pressure relief housing 51; pressure relief switch 52; fastener 53. Detailed Implementation

[0036] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0037] like Figures 1-8 As shown, the pipe sealing device of this embodiment includes a sealing housing 1 and a fastening component 2.

[0038] The leak-sealing housing 1 includes at least two fasteners 11, with adjacent fasteners 11 hinged together. The leak-sealing housing 1 has a fixed state and a detached state. In the fixed state, the leak-sealing housing 1 is fitted onto the pipe. The fasteners 11 include sidewalls 111 and edges 112. The sidewalls 111 protrude 41 in a direction away from the pipe, and the edges 112 are connected to the edges of the sidewalls 111 and extend toward the pipe. The sidewalls 111 and edges 112 define a receiving groove 1123. A snap-fit ​​member 2 is detachably connected to the leak-sealing housing 1. The snap-fit ​​member 2 includes a first snap-fit ​​portion 21 and a second snap-fit ​​portion 22. In the fixed state, the first snap-fit ​​portion 21 is connected to the second snap-fit ​​portion 22 to fix the leak-sealing housing 1 onto the pipe; in the detached state, the first snap-fit ​​portion 21 is separated from the second snap-fit ​​portion 22 to remove the leak-sealing housing 1 from the pipe.

[0039] Specifically, such as Figures 1-4 As shown, two adjacent fasteners 11 can be connected by multiple hinges to achieve relative rotation. That is, in the disassembled state, the multiple fasteners 11 can rotate relative to each other through the hinges so that they can be removed from the pipe. The multiple fasteners 11 can be arranged around the pipe circumferentially and can be connected by a first snap-fit ​​part and a second snap-fit ​​part to fix the leak-sealing housing 1 to the outer peripheral wall of the pipe.

[0040] It is understood that the first and second snap-fit ​​parts can be respectively provided on the two end fasteners 11 of the plurality of fasteners 11, so as to fix the leak-sealing housing 1 to the pipeline in the fixed state. Optionally, the snap-fit ​​part 2 can also be a clamp, that is, the leak-sealing housing is fitted onto the pipeline, and the clamp is used to tightly fasten the leak-sealing housing to the pipeline.

[0041] Preferably, multiple fasteners 11 are arranged in a cylindrical shape to fit the pipe. That is, the sidewall 111 of the fastener 11 is arc-shaped, and the edge 112 is provided on the inner peripheral wall of the sidewall 111 (i.e. the side of the sidewall 111 adjacent to the pipe), so that when fixed, the edge 112 abuts against the outer peripheral wall of the pipe, and the receiving groove 1123 defined by the sidewall 111 and the edge 112 is used to collect the liquid discharged from the pipe leak.

[0042] In other words, during the tightening process, the pipe sealing device of this embodiment can temporarily store the overflowing liquid in the receiving tank 1123, which can prevent the liquid from gradually overflowing from the gap between the sealing device and the pipe wall, prevent the overflowing liquid from forming a jet, and also avoid the resistance formed by the overflowing liquid from hindering the tightening of the sealing device, making the tightening more convenient.

[0043] It should be noted that the following embodiments are all illustrated using two fasteners 11 as examples.

[0044] In some embodiments, the pipe sealing device of the present invention further includes a rib 3, which is connected to the fixing member 11 and located within the receiving groove 1123. The extending direction of the rib 3 is parallel to the length direction of the side wall 111 (e.g., ...). Figure 3 The ribs 3 are consistent in the vertical direction shown, and there are multiple ribs 3. The multiple ribs 3 are along the sidewall 111 in the width direction (e.g., the vertical direction shown). Figure 3 As shown in the diagram, the ribs are arranged at intervals in the left and right directions, in a fixed state, with the ribs 3 abutting against the outer peripheral wall of the pipe.

[0045] It is understandable that, such as Figures 3-5 As shown, in a fixed state, multiple ribs 3 can abut against the outer peripheral wall of the pipe to increase the friction between the sealing shell 1 and the pipe, and reduce the possibility of the sealing shell 1 shifting due to external forces after clamping or installation.

[0046] Preferably, the edge 112 includes a first side portion 1121 and a second side portion 1122 arranged opposite to each other along the length direction of the sidewall 111. The first end of one of the two adjacent ribs 3 is connected to the first side portion 1121, and the first end of the other rib 3 is connected to the second side portion 1122, so as to divide the receiving groove 1123 into a plurality of connected flow channels.

[0047] It is understandable that, such as Figure 3 , Figure 4 and Figure 6 As shown, the first side portion 1121 is located at the upper end of the side wall 111, and the second side portion 1122 is located at the lower end of the side wall 111. Among the two adjacent ribs 3, the upper end of one rib 3 is connected to the first side portion 1121, and the lower end of the other rib 3 is connected to the second side portion 1122, thereby dividing the receiving groove 1123 into multiple flow channels, and the extension direction of the flow channels is generally "S-shaped".

[0048] In other words, by using multiple ribs 3, the receiving tank 1123 can be divided into S-shaped flow channels, which increases the flow path of the overflow liquid in the receiving tank 1123, and correspondingly reduces the time for the liquid to fill the receiving tank 1123, thus providing installation time for the clamping and sealing housing 1.

[0049] In some embodiments, the pipe sealing device of the present invention further includes a sealing element 4. The first side 1121 adjacent to the pipe and the second side 1122 adjacent to the pipe are both provided with sealing elements 4. In a plane orthogonal to the length direction of the side wall 111, the distance from the sealing element 4 to the pipe is less than or equal to the distance from the rib 3 to the pipe.

[0050] Specifically, such as Figures 1-4 As shown, the seal 4 is arc-shaped, and each fixing member 11 has a seal 4 on its first side 1121 and second side 1122. It can be understood that when the distance from the seal 4 to the pipe is less than the distance from the rib 3 to the pipe, in the fixed state, the seal 4 can abut against the outer peripheral wall of the pipe. Optionally, the seal 4 can be made of rubber material, so that when the clamping and blocking shell is in place, the seal 4 can deform under the compression of the outer peripheral wall of the pipe, thereby causing the rib 3 to abut against the outer peripheral wall of the pipe. Alternatively, preferably, when the distance from the seal 4 to the pipe is equal to the distance from the rib 3 to the pipe, in the fixed state, both the seal 4 and the rib 3 can abut against the outer peripheral wall of the pipe.

[0051] In some embodiments, in a plane orthogonal to the length direction of the sidewall 111, the extension length of the seal 4 is greater than the extension length of the first side portion 1121, and in two adjacent fasteners 11, the seal 4 on one first side portion 1121 and the seal 4 on the other first side portion 1121 are arranged at intervals in the length direction of the sidewall 111.

[0052] It is understandable that, such as Figures 3-5As shown, the seal 4 is located on the first side 1121, with both ends of the seal 4 positioned outside the first side 1121. Similarly, the two ends of the seal 4 on the second side 1122 are also positioned outside the second side 1122. Therefore, in the fixed state, the two ends of the seal 4 on the first side 1121 of one of the two fixing members 11 overlap with the two ends of the seal 4 on the first side 1121 of the other fixing member 11. In other words, when the two fixing members 11 are fixed, leakage gaps are prone to occur at the connection between the two ends of the fixing members 11. To avoid liquid leakage, the overlapping arrangement of the seals 4 partially prevents liquid leakage.

[0053] Preferably, the seal 4 further includes a protrusion 41 and a groove 42. The protrusion 41 is provided at the first end of the seal 4, and the groove 42 is provided at the second end of the seal 4. In the two connected fixing members 11, the protrusion 41 of the seal 4 on one fixing member 11 is engaged in the groove 42 of the seal 4 on the other fixing member 11.

[0054] It is understandable that, such as Figure 1 and Figure 2 As shown, in the fixed state, the seals 4 on the two first edges 1121 cooperate with the grooves 42 through the protrusions 41, so that the gap at the connection of the two ends of the two fixing members 11 forms an S-shape, which greatly reduces the possibility of liquid overflow in the receiving groove 1123 and has good sealing performance.

[0055] In some embodiments, the pipe sealing device of the present invention further includes a pressure relief component 5. The pressure relief component 5 includes a pressure relief housing 51 and a pressure relief switch 52. The pressure relief housing 51 is connected to one end of the fixing member 11 in the length direction. The pressure relief switch 52 is disposed in the inner cavity of the pressure relief housing 51 and has a first position and a second position. In the first position, the pressure relief switch 52 blocks the inner cavity of the pressure relief housing 51 from communicating with the outside. In the second position, the pressure relief switch 52 opens the inner cavity of the pressure relief housing to communicate with the outside.

[0056] Specifically, such as Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, the pressure relief housing 51 has a pressure relief cavity, and the pressure relief switch 52 is placed inside the pressure relief cavity. The outer peripheral wall of the pressure relief switch 52 is in a sealed sliding connection with the inner peripheral wall of the pressure relief cavity. That is, the pressure relief switch 52 is movable relative to the pressure relief cavity, and the outer peripheral wall of the pressure relief switch 52 is in a sealed connection with the inner peripheral wall of the pressure relief cavity.

[0057] It is understandable that, such as Figure 8As shown, the inclined profile of the pressure relief switch 52 is T-shaped, and the cross-sectional profile of the pressure relief cavity matches that of the pressure relief switch 52 to facilitate the movement of the pressure relief switch 52 within the pressure relief cavity. Both the pressure relief housing 51 and the first side 1121 have connecting holes. The connecting holes of the pressure relief housing 51 communicate with the pressure relief cavity and extend through the pressure relief housing 51 along its thickness direction. The pressure relief switch 52 also has connecting holes. Figure 1 and Figure 7 As shown, in the first position, the pressure relief switch 52 connects the first side 1121, the pressure relief housing 51, and the connecting hole on the pressure relief switch 52, so that the liquid in the receiving tank 1123 can be discharged through the connecting hole; in the second position, the pressure relief switch 52 can seal the connecting hole of the pressure relief housing 51 so that the liquid in the receiving chamber cannot be discharged through the connecting hole.

[0058] In some embodiments, the cross-sectional profile of the sidewall 111 is adapted to the cross-sectional profile of the pressure relief housing 51 in a plane orthogonal to the length direction of the sidewall 111.

[0059] It is understandable that, such as Figures 6-8 As shown, the longitudinal section of the side wall 111 and the longitudinal section of the pressure relief shell 51 are roughly semi-circular arcs. Therefore, in a fixed state, the two pressure relief shells 51 can be assembled into a ring to ensure the overall sealing performance of the sealing shell.

[0060] In some embodiments, the pressure relief assembly 5 further includes a pressure relief valve (not shown in the figure), the first end of which is connected to the pressure relief housing 51, and in a second position, the pressure relief valve is opened to discharge the liquid in the receiving tank 1123.

[0061] It is understandable that one end of the pressure relief valve is connected to the pressure relief housing 51 and the pressure relief valve is connected to the connecting hole so that when the pressure relief valve is opened, the liquid in the connecting hole can be discharged.

[0062] In some embodiments, the pressure relief assembly 5 further includes a fastener 53, which is detachably connected to the pressure relief housing 51. The first end of the fastener 53 abuts against the pressure relief switch 52 to restrict the movement of the pressure relief switch 52 between a first position and a second position.

[0063] It is understood that the fastener 53 can be a bolt, and the pressure relief housing 51 has a threaded hole that matches the bolt, so that the fastener 53 can be threaded into the threaded hole. Loosening the fastener 53 allows the pressure relief switch 52 to move between the first position and the second position. When the pressure relief switch 52 stops moving, tightening the fastener 53 makes one end of the fastener 53 abut against the pressure relief switch 52, thereby ensuring that the position of the pressure relief switch 52 is fixed.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0066] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0067] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0068] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0069] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A pipe sealing device, characterized in that, include: A leak-sealing housing includes at least two fixing members, with adjacent fixing members hinged together. The leak-sealing housing has a fixed state and a detached state. In the fixed state, the leak-sealing housing is fitted onto the pipe. The fastener includes a sidewall and an edge, the sidewall protruding away from the pipe, the edge being connected to the edge of the sidewall and extending toward the pipe, the sidewall and the edge defining a receiving groove; A fastening element is detachably connected to the leak-sealing housing. The fastening element includes a first snap-fit ​​portion and a second snap-fit ​​portion. In the fixed state, the first snap-fit ​​portion is connected to the second snap-fit ​​portion to fix the leak-sealing housing onto the pipe. In the disassembled state, the first snap-fit ​​portion is separated from the second snap-fit ​​portion to remove the leak-sealing housing from the pipe. Ribs, which are connected to the fastener and located in the receiving groove, extend in the same direction as the length of the sidewall. There are multiple ribs, which are spaced apart along the width of the sidewall. In the fixed state, the ribs abut against the outer peripheral wall of the pipe. The edge includes a first side portion and a second side portion arranged opposite each other along the length of the sidewall. The first end of one of the two adjacent ribs is connected to the first side portion, and the first end of the other rib is connected to the second side portion, so as to divide the receiving groove into a plurality of connected flow channels.

2. The pipe sealing device according to claim 1, characterized in that, It also includes a sealing element, which is provided on both the first side adjacent to the pipe and the second side adjacent to the pipe. In a plane orthogonal to the length direction of the sidewall, the distance from the sealing element to the pipe is less than or equal to the distance from the rib to the pipe.

3. The pipe sealing device according to claim 2, characterized in that, In a plane orthogonal to the length direction of the sidewall, the extension length of the seal is greater than the extension length of the first side portion. In two adjacent fasteners, the seal on one of the first edges and the seal on the other of the first edges are arranged at intervals along the length of the sidewall.

4. The pipe sealing device according to claim 2, characterized in that, The seal also includes a protrusion and a groove. The protrusion is located at the first end of the seal, and the groove is located at the second end of the seal. In the two connected fixing members, the protrusion of the seal on one fixing member engages with the groove of the seal on the other fixing member.

5. The pipe sealing device according to any one of claims 1-4, characterized in that, It also includes a pressure relief assembly, which comprises a pressure relief housing and a pressure relief switch. The pressure relief housing is connected to one end of the fixing member along its length. The pressure relief switch is disposed within the inner cavity of the pressure relief housing and has a first position and a second position. In the first position, the pressure relief switch blocks the internal cavity of the pressure relief housing from communicating with the outside. In the second position, the pressure relief switch connects the inner cavity of the pressure relief housing to the outside.

6. The pipe sealing device according to claim 5, characterized in that, In a plane orthogonal to the length direction of the sidewall, the cross-sectional profile of the sidewall is adapted to the cross-sectional profile of the pressure relief housing.

7. The pipe sealing device according to claim 5, characterized in that, The pressure relief assembly also includes a pressure relief valve, the first end of which is connected to the pressure relief housing. In the second position, the pressure relief valve is opened to discharge the liquid in the receiving tank.

8. The pipe sealing device according to claim 5, characterized in that, The pressure relief assembly also includes a fastener that is detachably connected to the pressure relief housing. A first end of the fastener abuts against the pressure relief switch to restrict the movement of the pressure relief switch between the first position and the second position.

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