Temporary leaking stoppage device for pipeline

Abstract

The invention relates to a temporary leaking stoppage device for a pipeline. The pipeline temporary leaking stoppage device comprises two leaking stoppage mechanisms, the two leaking stoppage mechanisms are oppositely connected and used for being installed at a pipeline leakage point, each leaking stoppage mechanism comprises a pipe periphery sealing piece, a first connecting piece and a second connecting piece, and the pipe periphery sealing piece is provided with two pipe periphery sealing parts; the two pipe circumference sealing parts are arranged at the upper end and the lower end of the inner side wall of the pipe circumference sealing piece respectively. The first connecting piece is arranged on one side of the pipe circumference sealing piece, the first connecting piece is provided with a first connecting sealing part, and the first connecting sealing part is arranged on the inner side wall of the first connecting piece. The second connecting piece is arranged on the other side of the pipe periphery sealing piece and provided with a second connecting sealing part, and the second connecting sealing part is arranged on the inner side wall of the second connecting piece. The first connecting sealing part is connected with the second connecting sealing part of the other leaking stoppage mechanism in a sealed mode. The temporary leaking stoppage device for the pipeline has the advantages of being wide in application range and easy to install.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline maintenance components, and in particular to a temporary pipeline leak plugging device. Background Art

[0002] There are a large number of oil pipes, gas pipes and water pipes in energy-storage power plants. If leakage occurs in the pipelines during the operation of the unit, it will cause medium loss, affect the equipment operating environment, and even cause equipment damage and inability to operate normally. The conventional way to deal with leakage requires long-term equipment shutdown.

[0003] In order to avoid long-term equipment shutdown due to leak treatment, a temporary pipeline plugging device can be used to pre-treat the leak. There are two main types of temporary pipeline plugging devices on the market. One is a petal-type plugging device with non-metallic seals, also known as a half joint. Due to the non-metallic seals, the fit between the petal-type clamping parts and the pipeline is not tight enough. It can only be used in low-pressure occasions where the pipeline pressure is not greater than 2MPa, and it cannot be used to seal high-pressure medium pipelines. Another way is to use sealing glue or tape to repair the leak. The sealing pressure of this method cannot be greater than 1MPa, and the sealing glue or tape is not easy to clean. Therefore, the current temporary pipeline plugging device has the defects of a small scope of application and poor plugging effect. Summary of the invention

[0004] Based on this, it is necessary to provide a temporary leak-plugging device for pipelines to address the problems of small application range and poor leak-plugging effect of temporary leak-plugging devices for pipelines.

[0005] A temporary leak-plugging device for a pipeline comprises two leak-plugging mechanisms, which are relatively connected and used to be installed at a leaking point of the pipeline. The leak-plugging mechanisms comprise:

[0006] A pipe peripheral seal, the pipe peripheral seal is a cylindrical shape with an arc-shaped cross section, and the pipe peripheral seal is provided with two pipe peripheral sealing parts, and the two pipe peripheral sealing parts are respectively arranged at the upper end and the lower end of the inner side wall of the pipe peripheral seal;

[0007] A first connecting member, the first connecting member is arranged at one side of the pipe peripheral sealing member, the first connecting member is provided with a first connecting sealing portion, and the first connecting sealing portion is arranged on the inner side wall of the first connecting member;

[0008] and a second connecting member, the second connecting member being arranged on the other side of the pipe peripheral sealing member, the second connecting member being provided with a second connecting sealing portion, and the second connecting sealing portion being arranged on the inner side wall of the second connecting member;

[0009] Wherein, the first connection sealing part is sealedly connected to the second connection sealing part of another leak-proof mechanism.

[0010] In one embodiment, the circumferential sealing portion includes a main sealing edge, a first sealing end and a second sealing end. The main sealing edge is arranged on the inner wall of the circumferential sealing element around the circumference of the circumferential sealing element. The first sealing end and the second sealing end are respectively arranged at two ends of the main sealing edge. The first sealing end is used for sealing connection with the second sealing end of another leak-proof mechanism.

[0011] In one embodiment, the first sealing end is provided with a socket sealing edge, and the second sealing end is provided with a socket sealing edge; or, the first sealing end is provided with a socket sealing edge, and the second sealing end is provided with a socket sealing edge; the socket sealing edge is sealingly connected to the socket sealing edge of another leak-proof mechanism.

[0012] In one embodiment, two ends of the first connecting sealing portion are respectively connected to two of the first sealing ends, and two ends of the second connecting sealing portion are respectively connected to two of the second sealing ends;

[0013] The first connecting sealing part is configured as a connecting sealing blade, and the second connecting sealing part is provided with a connecting sealing blade edge; or, the first connecting sealing part is provided with a connecting sealing blade edge, and the second connecting sealing part is configured as a connecting sealing blade; the connecting sealing blade is sealingly connected to the connecting sealing blade edge of another leak-proof mechanism.

[0014] In one embodiment, the first connecting member further includes a first connecting seat, which is arranged on the outer surface of the first connecting member and has a first connecting through hole. The second connecting member further includes a second connecting seat, which is arranged on the outer surface of the second connecting member and has a second connecting through hole. The first connecting through hole is connected to the second connecting through hole of another leak-plugging mechanism through a fastener.

[0015] In one embodiment, the first connection seat is further provided with a first sealing groove, the first sealing groove is arranged around the first connection through hole, and the first sealing groove is used to accommodate a first O-ring;

[0016] The second connecting seat is further provided with a second sealing groove, which is arranged around the second connecting through hole and is used to accommodate a second O-ring.

[0017] In one of the embodiments, the pipe perimeter seal is further provided with a quick connector, and the quick connector is communicated with the inner side wall of the pipe perimeter seal.

[0018] In one of the embodiments, the main sealing edge, the socket sealing edge and the connecting sealing edge are configured as double-conical steel edges, and the sealing taper of the double-conical steel edges is 5° to 10°.

[0019] In one embodiment, first reinforcing ribs are provided on both sides of the main sealing edge; and second reinforcing ribs are provided on both sides of the socket sealing edge.

[0020] In one embodiment, the pipe perimeter seal, the first connecting member and the second connecting member are integrally connected.

[0021] The above-mentioned temporary leak-plugging device for pipelines is achieved by connecting two leak-plugging mechanisms relatively to the leaking point of the leaking pipeline, so that two pipe-circumferential seals surround the leaking pipeline to form a closed accommodating chamber, wherein the first connecting members of the two leak-plugging mechanisms are connected to the second connecting member of the other leak-plugging mechanism, thereby completing the installation of the temporary leak-plugging device for pipelines. Specifically, pipe-circumferential sealing parts are provided at the upper and lower ends of the pipe-circumferential seals, and the pipe-circumferential sealing parts are used to abut and seal the leaking pipeline, and the first connecting member and the second connecting member are respectively provided with a first connecting sealing part and a second connecting sealing part, and the first connecting sealing part and the second connecting sealing part are used to seal the first connecting member and the second connecting member on both sides, so that the two leak-plugging mechanisms form a sealed connection with the pipeline, which can be used for temporary leak plugging of high-pressure pipelines to achieve the effect of rapid leak plugging, and avoid long-term shutdown of equipment due to leak point treatment, and has the advantages of wide application range and simple installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] FIG1 is a schematic structural diagram of a temporary pipeline leak plugging device according to an embodiment of the present application.

[0023] FIG2 is a schematic structural diagram of a leak-proof mechanism of a temporary leak-proof device for pipelines according to an embodiment of the present application.

[0024] FIG3 is a cross-sectional view of the leakage plugging mechanism of the pipeline temporary leakage plugging device described in the embodiment of the present application at AA.

[0025] Figure Number:

[0026] 10. Leakage plugging mechanism;

[0027] 100, pipe peripheral seal; 110, pipe peripheral seal portion; 111, main sealing edge; 112, first sealing end; 112A, socket sealing edge; 113, second sealing end; 1131, socket sealing edge; 114, first reinforcing rib; 115, second reinforcing rib; 120, quick connector;

[0028] 200, first connecting member; 210, first connecting sealing portion; 211, connecting sealing blade; 220, first connecting seat; 220A, first connecting through hole; 220B, first sealing groove;

[0029] 300, second connecting member; 310, second connecting sealing portion; 310A, connecting sealing edge; 320, second connecting seat; 320A, second connecting through hole; 320B, second sealing groove. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0031] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0036] Referring to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 show the schematic diagram of the structure of the temporary plugging device for pipeline in one embodiment of the present application. The temporary plugging device for pipeline provided in one embodiment of the present application includes two plugging mechanisms 10, which are relatively connected and used to be installed at the leakage point of the pipeline, so that a closed accommodating chamber can be formed between the two plugging mechanisms 10 and the leaking pipeline, thereby sealing the leaked medium in the accommodating chamber. Specifically, the plugging mechanism 10 includes a pipe perimeter seal 100, a first connecting member 200 and a second connecting member 300. The pipe perimeter seal 100 is cylindrical with an arc-shaped cross-section and can be installed in contact with the surface of the pipeline. The pipe perimeter seal 100 is provided with two pipe perimeter sealing parts 110, which are respectively arranged at the upper end and the lower end of the inner side wall of the pipe perimeter seal 100, and the pipe perimeter sealing part 110 is used to abut the leaking pipeline to form a sealed connection. The first connector 200 is disposed on one side of the pipe peripheral seal 100, and the first connector 200 is provided with a first connection sealing portion 210, and the first connection sealing portion 210 is disposed on the inner side wall of the first connector 200. The second connector 300 is disposed on the other side of the pipe peripheral seal 100, and the second connector 300 is provided with a second connection sealing portion 310, and the second connection sealing portion 310 is disposed on the inner side wall of the second connector 300. When two plugging mechanisms 10 are installed, the first connection sealing portion 210 of one plugging mechanism 10 is sealed and connected with the second connection sealing portion 310 of the other plugging mechanism 10, and the second connection sealing portion 310 of the plugging mechanism 10 is sealed and connected with the first connection sealing portion 210 of the other plugging mechanism 10. Specifically, the pipe peripheral seal 100, the first connector 200 and the second connector 300 are all made of metal, such as stainless steel or copper.

[0037] The temporary plugging device for pipelines described in the embodiment of the present application is provided by relatively connecting two plugging mechanisms 10 at the leakage point of the leaking pipeline, so that two pipe perimeter seals 100 are arranged around the leaking pipeline, and then the first connectors 200 of the two plugging mechanisms 10 are connected to the second connector 300 of the other plugging mechanism, thereby completing the installation of the temporary plugging device for pipelines. Specifically, the upper and lower ends of the pipe perimeter seals 100 are provided with pipe perimeter seals 110, which are used to abut and seal the leaking pipeline, and the first connector 200 and the second connector 300 are provided with first connection seals 210 and second connection seals 310, respectively, which are used to seal the first connector 200 and the second connector 300 on both sides, so that the two plugging mechanisms 10 form a sealed connection with the leaking pipeline.

[0038] The temporary leak-plugging device for pipelines described in the embodiment of the present application has a high degree of sealing by providing a pipe perimeter sealing portion to seal against the leaking pipeline, and providing a first connecting sealing portion 210 and a second connecting sealing portion 310 of another leak-plugging mechanism 10 for sealing connection. The temporary leak-plugging device for pipelines can be used for temporary leak plugging of high-pressure pipelines greater than 2MPa, and only two components are required to be connected, so the device can be quickly operated to achieve a quick leak plugging effect and reduce the amount of medium leakage. It can be used for temporary leak plugging to avoid long-term equipment shutdown due to leak treatment, and has the advantages of a wide range of applications and simple installation.

[0039] In an optional embodiment, the pipe peripheral seal 100, the first connector 200 and the second connector 300 are integrally connected. By forming the leak plugging mechanism 10 in an integrated manner, the integrity of the leak plugging mechanism 10 can be improved, and the strength of the leak plugging mechanism 10 can be improved, and the probability of leakage under high pressure use can be reduced, thereby improving the stability of the device.

[0040] As shown in FIG. 3 , FIG. 3 shows a schematic cross-sectional structure diagram of a plugging mechanism 10 of a temporary plugging device for a pipeline in an embodiment of the present application. In some embodiments, the pipe peripheral seal portion 110 includes a main sealing edge 111, a first sealing end 112, and a second sealing end 113. The main sealing edge 111 is arranged on the inner side wall of the pipe peripheral seal 100 around the circumference of the pipe peripheral seal 100, and the first sealing end 112 and the second sealing end 113 are respectively arranged at the two ends of the main sealing edge 111. The first sealing end 112 and the second sealing end 113 are both used for sealing connection with the second sealing end 113 of another plugging mechanism 10. Specifically, the first sealing end 112 and the second sealing end 113 extend out of both sides of the inner side wall of the pipe peripheral seal 100 along the circumference of the pipe peripheral seal 100 respectively. By arranging the main sealing edge 111 around the inner side wall of the pipe peripheral seal 100, the main sealing edge 111 forms a good seal with the leaking pipeline during installation. Moreover, the end of the main sealing edge 111 is provided with a first sealing end 112 and a second sealing end 113 for connection, thereby ensuring the sealing of the two plugging mechanisms 10 at the connection, improving the ability of the temporary pipeline plugging device to withstand high pressure, and making it suitable for high-pressure leakage situations.

[0041] Further, as shown in FIG2 , the first sealing end 112 is provided with a socket sealing edge 112A, and the second sealing end 113 is provided with a socket sealing edge 1131. The socket sealing edge 1131 is sealedly connected to the socket sealing edge 112A of another plugging mechanism 10. In other embodiments, the first sealing end 112 may also be provided with a socket sealing edge 1131, and the second sealing end 113 may be provided with a socket sealing edge 112A. By providing the first sealing end 112 and the second sealing end 113 with the socket sealing edge 1131 and the socket sealing edge 112A that are matched and connected to each other, when the two plugging mechanisms 10 are connected, the socket sealing edge 1131 at the end of the main sealing edge 111 is inserted into the socket sealing edge 112A of the other main sealing edge 111, so that the connection ends of the two main sealing edges 111 have a sealing connection structure with higher stability.

[0042] In an optional embodiment, as shown in Fig. 2 and Fig. 3, the two ends of the first connection sealing part 210 are respectively connected to the two first sealing ends 112, and the two ends of the second connection sealing part 310 are respectively connected to the two second sealing ends 113. By connecting the end of the first connection sealing part 210 to the first sealing end 112 and the end of the second connection sealing part 310 to the second sealing end 113, the first connection sealing part 210 and the second connection sealing part 310 are enclosed to form a continuous sealing part, so that a closed accommodating cavity is formed when the two leak-proof mechanisms 10 are connected.

[0043] Further, as shown in Fig. 2 and Fig. 3, the first connection sealing part 210 is provided with a connection sealing blade 211, and the second connection sealing part 310 is provided with a connection sealing blade 310A, and the connection sealing blade 211 is sealed and connected with the connection sealing blade 310A of another plugging mechanism 10. In other embodiments, the first connection sealing part 210 is provided with a connection sealing blade 310A, and the second connection sealing part 310 is provided with a connection sealing blade 211. By providing the first connection sealing part 210 and the second connection sealing part 310 as the connection sealing blade 211 and the connection sealing blade 310A that are mutually matched and connected, when the two plugging mechanisms 10 are connected, the connection sealing blade 211 is inserted into the connection sealing blade 310A of the other plugging mechanism 10, so that the first connection member 200 and the second connection member 300 of the two plugging mechanisms 10 have a more stable sealing connection structure.

[0044] In an optional embodiment, as shown in FIG. 1 and FIG. 3 , the first connector 200 further includes a first connector seat 220, which is disposed on the outer surface of the first connector 200 and is provided with a first connecting through hole 220A, and the second connector 300 further includes a second connector seat 320, which is disposed on the outer surface of the second connector 300 and is provided with a second connecting through hole 320A, and the first connecting through hole 220A is connected to the second connecting through hole 320A of another plugging mechanism 10 through a fastener. In order to connect the first connector 200 and the second connector 300 of another plugging mechanism 10, the first connector seat 220 is disposed on the first connector 200, and the second connector seat 320 is disposed with a second connecting through hole 320A, so that the fastener passes through the first connecting through hole 220A of the first connector seat 220 and is connected to the second connecting through hole 320A of the second connector seat 320, so that the two plugging mechanisms 10 are tightly connected, which has the advantages of simple and reliable operation.

[0045] In an exemplary embodiment, the fastener is a through bolt, which can conveniently connect the first connecting member 200 and the second connecting member 300 .

[0046] In an optional embodiment, as shown in FIG3 , the first connection seat 220 is further provided with a first sealing groove 220B, the first sealing groove 220B is arranged around the first connection through hole 220A, and the first sealing groove 220B is used to accommodate a first O-type sealing ring. Further, the second connection seat 320 is further provided with a second sealing groove 320B, the second sealing groove 320B is arranged around the second connection through hole 320A, and the second sealing groove 320B is used to accommodate a second O-type sealing ring. By providing the first sealing groove 220B for placing the first O-type sealing ring on the first connection seat 220, and providing the second sealing groove 320B for placing the second O-type sealing ring on the second connection seat 320, when the two ends of the fastener are installed on the first connection seat 220 and the second connection seat 320, the ends of the fastener abut against the first O-type sealing ring and the second O-type sealing ring, thereby ensuring the sealing between the fastener and the plugging mechanism 10, and improving the stability of the temporary plugging device for pipelines.

[0047] In an optional embodiment, as shown in FIG1 , the pipe peripheral seal 100 is further provided with a quick connector 120, and the quick connector 120 is communicated with the inner side wall of the pipe peripheral seal 100. By arranging the quick connector 120 on the pipe peripheral seal 100, the quick connector 120 can be communicated with the closed accommodating cavity enclosed by the two plugging mechanisms 10, and the pressure relief device, the pressure charging device and the pressure gauge and other equipment can be connected through the quick connector 120. When the quick connector 120 is connected to the pressure relief device, the leaking medium can be discharged to ensure the zero-pressure installation of the temporary plugging device for the pipeline, and the risk of the pressure medium leaking and injuring the operator during the installation process is avoided. At the same time, the accuracy of the installation adjustment is also improved, so that the installation and adjustment of the temporary plugging device for the pipeline can be completed in one step. At the same time, the pressure-relieved medium can also be conveniently recycled, which has a high value in terms of energy saving and environmental protection. When the quick connector 120 is connected to the pressure charging device, the forced sealing principle can be adopted to achieve a more ideal auxiliary plugging effect. When the quick connector 120 is connected to the pressure gauge, the pressure of the leaking pipeline can be detected in real time, which is convenient for detecting the leakage.

[0048] In an optional embodiment, the main sealing edge 111, the socket sealing edge 1131 and the connecting sealing edge 211 are configured as double-conical steel edges. Specifically, the sealing taper of the double-conical steel edge is 5° to 10°. Furthermore, in order to ensure the edge stiffness of the double-conical steel edge, the double-conical steel edge is quenched during processing. By configuring the main sealing edge 111, the socket sealing edge 1131 and the connecting sealing edge 211 as double-conical steel edges, they have higher strength, thereby improving the connection sealing performance between the main sealing edge 111, the socket sealing edge 1131 and the connecting sealing edge 211 and the leaking pipeline, the socket sealing edge 112A and the connecting sealing edge 310A.

[0049] In an optional embodiment, as shown in Fig. 3, first reinforcing ribs 114 are provided on both sides of the main sealing edge 111, and second reinforcing ribs 115 are provided on both sides of the socket sealing edge 112A. By providing the first reinforcing ribs 114 and the second reinforcing ribs 115, the strength of the main sealing edge 111 and the socket sealing edge 112A is improved, and the stability of the temporary pipeline leak plugging device is ensured.

[0050] In an optional embodiment, in order to achieve the sealing effect of each sealing pair of the pipeline temporary plugging device, the sealing pairs are designed with a matching margin. Among them, the diameter tolerance of the pipe peripheral sealing part 110 is -0.10mm to -0.03mm, and the eccentricity tolerance of the first connecting sealing part 210 and the second connecting sealing part 310 is (relative to the center of the pipeline) 1mm to 5mm.

[0051] The temporary pipeline leak plugging device described in the embodiment of the present application has the following beneficial effects:

[0052] 1. The pipeline temporary plugging device has high sealing degree by providing a sealing part around the pipe to seal against the leaking pipeline, and providing a first connecting sealing part 210 and a second connecting sealing part 310 of another plugging mechanism 10 to be sealed and connected, and can be used for temporary plugging of high-pressure pipelines. Moreover, only two parts are connected, and the effect of rapid plugging can be achieved by quick operation, thereby reducing the leakage of the medium. Temporary plugging can avoid long-term shutdown of equipment due to leak treatment, and has the advantages of wide application range and simple installation.

[0053] 2. When the quick connector 120 is connected to the pressure relief device, the leaked medium can be discharged to ensure zero-pressure installation of the temporary plugging device for the pipeline, avoiding the risk of pressure medium leakage and injuring operators during the installation process. At the same time, it also improves the accuracy of installation adjustment, so that the temporary plugging device for the pipeline can be installed and adjusted in one step. At the same time, the pressure relief medium can also be easily recycled, which has high value in energy saving and environmental protection. When the quick connector 120 is connected to the charging device, the forced sealing principle can be used to achieve a more ideal auxiliary plugging effect. When the quick connector 120 is connected to the pressure gauge, the pressure of the leaking pipeline can be detected in real time, which is convenient for detecting leakage.

[0054] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0055] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A temporary leak-plugging device for a pipeline, comprising two leak-plugging mechanisms (10), the two leak-plugging mechanisms (10) being connected relative to each other and being used for installation at a leaking point of the pipeline, characterized in that: The leak-blocking mechanism (10) comprises: A pipe peripheral seal (100), the pipe peripheral seal (100) being cylindrical with an arc-shaped cross section, the pipe peripheral seal (100) being provided with two pipe peripheral seal portions (110), the two pipe peripheral seal portions (110) being respectively arranged at the upper end and the lower end of the inner side wall of the pipe peripheral seal (100); a first connecting member (200), the first connecting member (200) being arranged on one side of the pipe peripheral sealing member (100), the first connecting member (200) being provided with a first connecting sealing portion (210), the first connecting sealing portion (210) being arranged on an inner side wall of the first connecting member (200); and a second connecting piece (300), the second connecting piece (300) being arranged on the other side of the pipe peripheral sealing piece (100), the second connecting piece (300) being provided with a second connecting sealing portion (310), the second connecting sealing portion (310) being arranged on the inner side wall of the second connecting piece (300); The first connection sealing portion (210) is sealedly connected to the second connection sealing portion (310) of another leakage blocking mechanism (10).

2. The temporary leak-proof device for pipelines according to claim 1, characterized in that: The circumferential tube sealing portion (110) comprises a main sealing edge (111), a first sealing end (112) and a second sealing end (113); the main sealing edge (111) is arranged on the inner side wall of the circumferential tube sealing member (100) around the circumference of the circumferential tube sealing member (100); the first sealing end (112) and the second sealing end (113) are respectively arranged at two ends of the main sealing edge (111); the first sealing end (112) is used for sealingly connecting with the second sealing end (113) of another leak-proof mechanism (10).

3. The temporary leak-proof device for pipelines according to claim 2, characterized in that: The first sealing end (112) is provided with a socket sealing edge (112A), and the second sealing end (113) is provided with a socket sealing edge (1131); or, the first sealing end (112) is provided with a socket sealing edge (1131), and the second sealing end (113) is provided with a socket sealing edge (112A); the socket sealing edge (1131) is sealingly connected to the socket sealing edge (112A) of another leak-proof mechanism (10).

4. The temporary leak-stopping device for pipelines according to claim 3 is characterized in that: Two ends of the first connection sealing portion (210) are respectively connected to the two first sealing end portions (112), and two ends of the second connection sealing portion (310) are respectively connected to the two second sealing end portions (113); The first connecting sealing portion (210) is configured as a connecting sealing blade (211), and the second connecting sealing portion (310) is provided with a connecting sealing blade edge (310A); or, the first connecting sealing portion (210) is provided with a connecting sealing blade edge (310A), and the second connecting sealing portion (310) is configured as a connecting sealing blade (211); the connecting sealing blade (211) is sealingly connected to the connecting sealing blade edge (310A) of another leak-blocking mechanism (10).

5. The temporary pipeline leak plugging device according to claim 1 is characterized in that: The first connecting member (200) further comprises a first connecting seat (220), the first connecting seat (220) being arranged on the outer surface of the first connecting member (200), the first connecting seat (220) being provided with a first connecting through hole (220A), and the second connecting member (300) further comprises a second connecting seat (320), the second connecting seat (320) being arranged on the outer surface of the second connecting member (300), the second connecting seat (320) being provided with a second connecting through hole (320A); the first connecting through hole (220A) is connected to the second connecting through hole (320A) of another leak-blocking mechanism (10) via a fastener.

6. The temporary pipeline leak plugging device according to claim 5, characterized in that: The first connection seat (220) is further provided with a first sealing groove (220B), the first sealing groove (220B) being arranged around the first connection through hole (220A), the first sealing groove (220B) being used to accommodate a first O-type sealing ring; The second connection seat (320) is further provided with a second sealing groove (320B), the second sealing groove (320B) being arranged around the second connection through hole (320A), and the second sealing groove (320B) being used to accommodate a second O-ring.

7. The temporary pipeline leak plugging device according to claim 1, characterized in that: The pipe peripheral seal (100) is further provided with a quick connector (120), and the quick connector (120) is in communication with the inner side wall of the pipe peripheral seal (100).

8. The temporary pipeline leak plugging device according to claim 4, characterized in that: The main sealing edge (111), the socket sealing edge (1131) and the connecting sealing edge (211) are configured as double-conical steel edges, and the sealing taper of the double-conical steel edges is 5° to 10°.

9. The temporary pipeline leak plugging device according to claim 3, characterized in that: First reinforcing ribs (114) are provided on both sides of the main sealing edge (111); and second reinforcing ribs (115) are provided on both sides of the socket sealing edge (112A).

10. The temporary pipeline leak plugging device according to any one of claims 1 to 9, characterized in that: The pipe peripheral sealing member (100), the first connecting member (200) and the second connecting member (300) are integrally connected.

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