Plugging structure and cable duct bank plugging device and plugging method thereof
By using a combination of tightening and squeezing components in cable conduits, the problems of water ingress and blockage in cables are solved, achieving effective cable sealing and improving the safety and stability of the power system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-04-10
AI Technical Summary
Existing cable sealing structures make cables susceptible to water ingress and blockage, affecting the safety and stability of the power system.
The system employs a combination of tightening and extrusion components. The cable is fixed inside the cable conduit by the connecting component, and the extrusion force of the extrusion component seals the gap between the cable and the conduit, preventing moisture from entering and causing blockage.
It effectively prevents water from entering and clogging cables, extends the service life of cables, and improves the safety and stability of power systems.
Smart Images
Figure CN121840472A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of cable duct sealing technology, specifically relating to a sealing structure, a cable duct sealing device, and a sealing method. Background Technology
[0002] Currently, the primary purpose of cable sealing is to prevent damage to cable systems from fires, floods, and other external factors. However, due to complex construction conditions, significant management challenges, and multiple issues during the design and implementation phases, cable sealing work has exposed many serious hidden dangers, directly threatening the safety and stability of the power system. Firstly, severe water accumulation in cable wells creates a harsh operating environment, easily leading to water ingress or excessive humidity at cable joints, causing malfunctions and making daily inspections, fault location, and maintenance extremely difficult. Secondly, the interconnectedness of cable wells allows quicksand, mud, and debris to flow into the pipes over long-term operation, easily causing blockages. Summary of the Invention
[0003] In view of the above problems, the purpose of this invention is to provide a sealing structure, a cable duct sealing device, and a sealing method, which solves the problem that existing sealing structures cause water to easily enter the cable and block the cable duct.
[0004] To achieve the above objectives, the technical solution of the present invention is implemented as follows: A sealing structure for cable conduits includes a tightening component, a compression component, and a connecting component. The tightening component is connected to the compression component via the connecting component. The cable is disposed within the tightening component, and the tightening component is sleeved within the compression component. The outer peripheries of both the tightening component and the compression component are in contact with the inner wall of the cable conduit. When the end of the tightening component is compressed by the compression component, it fixes the cable to seal the cable conduit.
[0005] In some embodiments, the tightening assembly includes a first base and a limiting portion disposed on the first base. The limiting portion is used to guide and limit the cable that is inserted through it. The inner wall of the limiting portion contacts the cable, and the outer wall of the limiting portion contacts the extrusion assembly.
[0006] In some embodiments, the limiting portion includes a plurality of tapering strips that gradually narrow along the insertion direction of the cable to guide and limit the cable.
[0007] In some embodiments, the cross-sectional diameter of the tapering strip continuously decreases from large to small along the insertion direction of the cable.
[0008] In some embodiments, the angle between the extension direction of the tape and the insertion direction of the cable is 5°-30°.
[0009] In some embodiments, the extrusion assembly includes a second base and an extrusion portion disposed on the second base, the extrusion portion contacting the outer wall of the limiting portion.
[0010] In some embodiments, the second base is provided with a first through hole, through which the connecting component contacts the tightening component.
[0011] Another technical solution of the present invention is as follows: a cable duct sealing device includes at least one of the sealing structures and a fixing unit, wherein the fixing unit is disposed between the tightening component and the squeezing component, and the fixing unit contacts the inner wall of the cable duct under the action of the squeezing component.
[0012] In some embodiments, the compression assembly further includes a clamping portion that contacts the fixing unit along the cable's outgoing direction.
[0013] Another technical solution of the present invention is implemented as follows: a sealing method based on a cable duct sealing device, wherein the cable duct sealing device comprises: Place the cable inside the extrusion assembly; The fixing unit is placed on the extrusion assembly along the direction in which the cable exits; Place the tightening assembly on the fixing unit along the cable's outgoing direction, and place the connecting assembly into the extrusion assembly; The cable conduit sealing device is pushed into the cable conduit along the cable's exit direction, and the connecting assembly is tightened. The squeezing assembly squeezes the fixing unit and the tightening assembly to seal the gap between the cable conduit and the cable.
[0014] Compared with the prior art, the present invention places the cable inside the tightening assembly, then fits the tightening assembly containing the cable inside the compression assembly, and places it inside the cable duct. The tightening assembly and the compression assembly are fastened by the connecting assembly. The outer periphery of both the tightening assembly and the compression assembly are in contact with the inner wall of the cable duct. When the end of the tightening assembly is compressed by the compression assembly, it fixes the cable and seals the gap between the cable duct and the cable. This makes the cable duct less prone to blockage in the cable well and prevents water from entering the cable joint, increasing the service life of the cable and thus improving the safety and stability of the power system. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a cross-sectional view of a sealing structure provided in Embodiment 1 of the present invention; Figure 2 This is a front view of a sealing structure provided in Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the tightening component in a sealing structure provided in Embodiment 1 of the present invention; Figure 4 This is another structural schematic diagram of the tightening component in a sealing structure provided in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the sealing strip in a sealing structure provided in Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the extrusion assembly in a sealing structure provided in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the structure of the fixing unit in a cable duct sealing device provided in Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the structure of a cable duct sealing device provided in Embodiment 2 of the present invention, applied to a cable duct; It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.
[0017] In the diagram, 1. Sealing structure, 11. Tightening assembly, 111. First base, 1111. Second through hole, 112. Limiting part, 1121. Closing strip, 12. Extrusion assembly, 121. Second base, 1211. First through hole, 122. Extrusion part, 123. Tightening part, 13. Connecting assembly, 2. Fixing unit, 21. Third through hole, 3. Support assembly, 4. Cable conduit, 5. Cable. Detailed Implementation
[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0019] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.
[0020] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0021] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.
[0022] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.
[0023] It should also be understood that the terminology used in this application specification is for the purpose of describing particular embodiments only and is not intended to limit the application. As used in this application specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.
[0024] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0025] Example 1 Embodiment 1 of the present invention provides a sealing structure for cable ducts, such as... Figure 1 and Figure 2As shown, the cable conduit 4 includes a tightening component 11, a compression component 12, and a connecting component 13. The tightening component 11 is connected to the compression component 12 through the connecting component 13. The cable 5 is disposed inside the tightening component 11. The tightening component 11 is sleeved inside the compression component 12. The outer peripheries of both the tightening component 11 and the compression component 12 are in contact with the inner wall of the cable conduit 4. When the end of the tightening component 11 is compressed by the compression component 12, it fixes the cable 5 to seal the cable conduit 4.
[0026] After adopting the above scheme, the cable 5 is placed inside the tightening component 11, and then the tightening component 11 containing the cable 5 is sleeved inside the compression component 12 and placed inside the cable pipe 5. The tightening component 11 and the compression component 12 are fastened by the connecting component 13. The outer periphery of the tightening component 11 and the compression component 12 are in contact with the inner wall of the cable pipe 4. When the end of the tightening component 11 is squeezed by the compression component 12, it fixes the cable 5 and seals the gap between the cable pipe 4 and the cable 5, so that the cable pipe 4 is not easily blocked in the cable well and water is not easily introduced at the cable joint, which increases the service life of the cable 5 and thus improves the safety and stability of the power system.
[0027] Furthermore, the connecting component 13 can be other components that can achieve connection, such as bolts, screws, pins, rivets, and tenons.
[0028] In the specific implementation process of this embodiment 1, such as Figure 3 and Figure 4 As shown, the tightening assembly 11 includes a first base 111 and a limiting part 112 disposed on the first base 111. The limiting part 112 is used to guide and limit the cable 5 that is inserted through it. The inner wall of the limiting part 112 is in contact with the cable 5, and the outer wall of the limiting part 112 is in contact with the extrusion assembly 12.
[0029] More specifically, the outer periphery of the first base 111 is circular. In order to match the inner diameter of the cable conduit 4, the first base 111 has a hole in the middle so that the cable 5 can pass through. When the cable 5 is inserted into the tightening component 11, the limiting part 112 is used to guide and limit the inserted cable 5. The inner wall of the limiting part 112 is made to contact the cable 5 by the fastening connection component 13. The squeezing component 12 squeezes the outer wall of the limiting part 112 so that the cable 5 can be better locked in the tightening component 11.
[0030] Furthermore, the tightening assembly 11 can be a one-piece molded component, or it can include at least two tightening members with arc-shaped structures. When the tightening members have an arc-shaped structure, such as... Figure 5As shown, at least two arc-shaped structures are assembled together to form a tightening assembly 11 with a central circular hole for the cable 5 to pass through. When the tightening assembly 11 includes at least two arc-shaped tightening members, the cable is first placed on the tightening member, and then other tightening members are placed, so that the tightening members combined together can hold the cable 5 tightly.
[0031] In the specific implementation process of this embodiment 1, such as Figure 5 As shown, the limiting part 112 includes a plurality of tapering strips 1121, which are tapered in a gradually tapering manner along the insertion direction of the cable 5, and are used to guide and limit the cable 5.
[0032] More specifically, the limiting part 112 includes a plurality of tapering strips 1121, which are gradually tapering along the insertion direction of the cable 5, so that when the fastening connection assembly 13 is fastened, the tapering strips 1121 are gradually tapering, and along the insertion direction of the cable 5, the end of the tapering strip 1121 with the smaller diameter can compress the cable 5 inward, thereby achieving the function of clamping the cable 5.
[0033] Furthermore, the tightening component 11 is made of flame-retardant material to prevent the flame from spreading along the cable conduit 4.
[0034] In the specific implementation process of this embodiment 1, such as Figure 5 As shown, the cross-sectional diameter of the tapering strip 1121 continuously decreases from large to small along the insertion direction of the cable 5.
[0035] More specifically, the cross-sectional diameter of the tapering strip 1121 continuously decreases from large to small along the insertion direction of the cable 5, thereby ensuring that the cable 5 is inserted more easily, and the fastening connection assembly 13 can achieve the function of holding the cable 5 tightly.
[0036] In the specific implementation process of this embodiment 1, such as Figure 5 As shown, the angle between the extension direction of the tapered strip 1121 and the insertion direction of the cable 5 is 5°-30°.
[0037] More specifically, the angle between the extension direction of the tapering strip 1121 and the insertion direction of the cable 5 is 5°-30°. The angle setting facilitates the cooperation between the tightening component 11 and the extrusion component 12, so that the tightening component 11 can be better subjected to the extrusion force of the extrusion component 12.
[0038] Furthermore, the angle between the extension direction of the sealing strip 1121 and the insertion direction of the cable 5 is 5°, 8°, 10°, 12°, 14°, 18°, 20°, 25° or 30°.
[0039] In the specific implementation process of this embodiment 1, such as Figure 6As shown, the extrusion assembly 12 includes a second base 121 and an extrusion portion 122 disposed on the second base 121, the extrusion portion 122 being in contact with the outer wall of the limiting portion 112.
[0040] More specifically, the extrusion assembly 12 includes a second base 121 and an extrusion part 122 disposed on the second base 121. The outer periphery of the second base 121 is circular. In order to match the inner diameter of the cable conduit 4, the extrusion part 122 contacts the outer wall of the limiting part 112, so that when the connecting assembly 13 is tightened, the extrusion part 122 can apply force to the limiting part 112, thereby ensuring the tightness of the cable 5.
[0041] Furthermore, along the direction in which the cable 5 exits, the length of the extrusion part 122 protruding from the second base 121 is greater than or equal to the length of the closing strip 1121, so that when the connecting assembly 13 is tightened, the extrusion part 122 can apply force evenly to the closing strip 1121.
[0042] Furthermore, the inner diameter of the extrusion part 122 is larger than the outer diameter of the limiting part 112 to ensure that the tightening component 11 can be fitted inside the extrusion component 12; and the angle between the extension direction of the extrusion part 122 and the insertion direction of the cable 5 is 3°-28°.
[0043] Furthermore, the angle between the extension direction of the extrusion part 122 and the insertion direction of the cable 5 is 3°, 6°, 8°, 10°, 12°, 16°, 18°, 23° or 28°.
[0044] Furthermore, because the cable 5 will have certain deviations during the manufacturing process, the angle between the extension direction of the extrusion part 122 and the insertion direction of the cable 5 and the angle between the extension direction of the closing strip 1121 and the insertion direction of the cable 5 have a certain interference. This interference makes it easy for the cable 5 to be inserted, so that the tightening component 11 can fit tightly with the cable 5 when tightening.
[0045] Furthermore, the extrusion assembly 12 can also be integrally formed, or it can include multiple extrusion parts with arc-shaped structures, and the extrusion assembly 12 is formed by splicing multiple extrusion parts.
[0046] In the specific implementation process of this embodiment 1, such as Figure 6 As shown, the second base 121 is provided with a first through hole 1211, and the connecting component 13 contacts the tightening component 11 through the first through hole 1211.
[0047] More specifically, the connecting component 13 contacts the tightening component 11 through the first through hole 1211, so that the connecting component 13 is positioned through the first through hole 1211, and the connecting component 13 is conveniently inserted into the tightening component 11 through the first through hole 1211.
[0048] Furthermore, such as Figure 3 and Figure 4 As shown, the first base 111 is provided with a second through hole 1111, and the connecting component 13 is sequentially inserted through the first through hole 1211 and the second through hole 1111 to complete the connection between the tightening component 11 and the squeezing component 12.
[0049] The working process of the sealing structure in Embodiment 1 of this invention is as follows: The cable 5 is placed inside the tightening component 11, and then the tightening component 11 containing the cable 5 is sleeved inside the compression component 12 and placed inside the cable pipe 5. The tightening component 11 and the compression component 12 are fastened by the connecting component 13. The outer periphery of the tightening component 11 and the compression component 12 are in contact with the inner wall of the cable pipe 4. When the end of the tightening component 11 is squeezed by the compression component 12, it fixes the cable 5 and seals the gap between the cable pipe 4 and the cable 5, so that the cable pipe 4 is not easily blocked in the cable well.
[0050] Example 2 Embodiment 2 of the present invention provides a cable duct sealing device, such as... Figure 1 , Figure 7 and Figure 8 As shown, it includes at least one sealing structure 1 as described in Embodiment 1 and a fixing unit 2. The fixing unit 2 is disposed between the tightening component 11 and the squeezing component 12. The fixing unit 2 contacts the inner wall of the cable pipe 4 under the action of the squeezing component 12.
[0051] After adopting the above solution, the fixing unit 2 is located between the tightening component 11 and the extrusion component 12. Under the action of the extrusion component 12, the fixing unit 2 contacts the inner wall of the cable pipe 4, so that the sealing effect of the gap between the cable pipe 4 and the cable 5 is better.
[0052] Furthermore, the fixing unit 2 is an expansion ring or expansion coil or other component that can perform an expansion function.
[0053] Furthermore, the fixing unit 2 is provided with a third through hole 21, and the connecting component 13 is sequentially inserted through the first through hole 1211, the third through hole 21 and the second through hole 1111 to complete the connection between the tightening component 11 and the squeezing component 12.
[0054] Furthermore, the fixing unit 2 can be integrally formed, or it can include multiple arc-shaped fixing components.
[0055] In the specific implementation process of this embodiment 2, such as Figure 6 As shown, the extrusion assembly 12 also includes a clamping part 123, which contacts the fixing unit 2 along the outgoing direction of the cable 5.
[0056] More specifically, when the connecting component 13 is tightened, the tightening part 123 presses against the fixing unit 2, and the fixing unit 2 expands under the action of the tightening part 123, thereby enabling the cable pipe sealing device to be better fixed inside the cable pipe 4.
[0057] Furthermore, the extrusion assembly 12 includes a plurality of clamping portions 123, which are spaced apart on the second base 121.
[0058] Furthermore, the tightening part 123 has an arc-shaped structure, and the tightening part 123 fits into the fixing unit 2 to apply force to the fixing unit 2.
[0059] Furthermore, the cable duct sealing device also includes a support component 3, which is connected to the sealing structure 1. Along the direction in which the cable 5 passes through, the support component 3 is located below the sealing structure 1. Specifically, the support component 3 is located below the compression component 12. The connecting component 13 is sequentially inserted through the support component 3, the first through hole 1211, the third through hole 21, and the second through hole 1111 to complete the sealing of the gap between the cable 4 and the cable duct 5.
[0060] The working process of the cable duct sealing device provided in Embodiment 2 of the present invention is as follows: the cable 5 is placed in the tightening component 11, then the tightening component 11 with the cable 5 is sleeved in the compression component 12, and the fixing unit 2 is placed between the tightening component 11 and the compression component 12, and then placed in the cable duct 5. The tightening component 11 and the compression component 12 are fastened by the connecting component 13. The outer periphery of the tightening component 11 and the compression component 12 are in contact with the inner wall of the cable duct 4. When the end of the tightening component 11 is squeezed by the compression component 12, the cable 5 is fixed. The fixing unit 2 is squeezed and expanded by the compression component 12 and fixed in the cable duct 5, thereby sealing the gap between the cable duct 4 and the cable 5, so that the cable duct 4 is not easily blocked in the cable well.
[0061] Example 3 Embodiment 3 of the present invention provides a sealing method based on a cable duct sealing device, which uses the cable duct sealing device described in Embodiment 2, including: Place cable 5 inside the extrusion assembly 12; The fixing unit 2 is placed on the extrusion assembly 12 along the outgoing direction of the cable 5; Place the tightening assembly 11 on the fixing unit 2 along the outgoing direction of the cable 5, and place the connecting assembly 13 into the compression assembly 12; The cable conduit sealing device is pushed into the cable conduit 4 along the direction in which the cable 5 passes through, and the connecting assembly 13 is tightened. The squeezing assembly 12 squeezes the fixing unit 2 and the tightening assembly 11 to seal the gap between the cable conduit 4 and the cable 5.
[0062] In summary, the cable 5 is placed inside the tightening assembly 11, and then the tightening assembly 11 containing the cable 5 is fitted inside the compression assembly 12 and placed inside the cable conduit 5. The tightening assembly 11 and the compression assembly 12 are fastened together by the connecting assembly 13. The outer periphery of both the tightening assembly 11 and the compression assembly 12 are in contact with the inner wall of the cable conduit 4. When the end of the tightening assembly 11 is compressed by the compression assembly 12, it fixes the cable 5 and seals the gap between the cable conduit 4 and the cable 5, making it less likely for the cable conduit 4 to be blocked in the cable well and preventing water from entering the cable joint, thus increasing the service life of the cable 5 and improving the safety and stability of the power system.
[0063] It should be understood that the above are merely illustrative examples and do not constitute any limitation on the technical solutions of the present invention. In specific applications, those skilled in the art can make settings as needed, and the present invention does not impose any restrictions on this.
[0064] It should be noted that the steps described above are merely illustrative and do not limit the scope of protection of this invention. In practical applications, those skilled in the art can select some or all of them to achieve the purpose of this embodiment according to actual needs, and no restrictions are imposed here. The steps of the method described in this application are not limited to being executed sequentially according to the order in the specification; without changing the core technical solution, the execution order of some steps can be adjusted, or they can be implemented in parallel, or steps can be omitted or added in different scenarios. The above modifications or equivalent substitutions do not affect the substantive content of the technical solution of this application and should all fall within the scope of protection of this application.
[0065] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. The scope of protection of this application should be determined by the scope of the claims. Although this application has disclosed the preferred embodiment above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall fall within the scope of the technical solution of this application.
Claims
1. A sealing structure for cable ducts, characterized in that, The device includes a tightening component (11), a squeezing component (12), and a connecting component (13). The tightening component (11) is connected to the squeezing component (12) through the connecting component (13). The cable (5) is disposed inside the tightening component (11). The tightening component (11) is sleeved inside the squeezing component (12). The outer periphery of both the tightening component (11) and the squeezing component (12) is in contact with the inner wall of the cable pipe (4). When the end of the tightening component (11) is squeezed by the squeezing component (12), it fixes the cable (5) to block the cable pipe (4).
2. The sealing structure according to claim 1, characterized in that, The tightening assembly (11) includes a first base (111) and a limiting part (112) disposed on the first base (111). The limiting part (112) is used to guide and limit the cable (5) that is inserted through it. The inner wall of the limiting part (112) is in contact with the cable (5), and the outer wall of the limiting part (112) is in contact with the extrusion assembly (12).
3. The sealing structure according to claim 2, characterized in that, The limiting part (112) includes a plurality of closing strips (1121), which are gradually tapered along the insertion direction of the cable (5) to guide and limit the cable (5).
4. The sealing structure according to claim 3, characterized in that, The cross-sectional diameter of the tapering strip (1121) continuously decreases from large to small along the insertion direction of the cable (5).
5. The sealing structure according to claim 3, characterized in that, The angle between the extension direction of the closing strip (1121) and the insertion direction of the cable (5) is 5°-30°.
6. The sealing structure according to any one of claims 2-5, characterized in that, The extrusion assembly (12) includes a second base (121) and an extrusion part (122) disposed on the second base (121), the extrusion part (122) being in contact with the outer wall of the limiting part (112).
7. The sealing structure according to claim 6, characterized in that, The second base (121) is provided with a first through hole (1211), and the connecting component (13) contacts the tightening component (11) through the first through hole (1211).
8. A cable duct sealing device, characterized in that, It includes at least one sealing structure (1) as described in any one of claims 1-7 and a fixing unit (2), wherein the fixing unit (2) is disposed between the tightening component (11) and the squeezing component (12), and the fixing unit (2) contacts the inner wall of the cable conduit (4) under the action of the squeezing component (12).
9. The cable duct sealing device according to claim 8, characterized in that, The extrusion assembly (12) further includes a clamping part (123) which contacts the fixing unit (2) along the exit direction of the cable (5).
10. A sealing method based on a cable duct sealing device, using the cable duct sealing device as described in any one of claims 8-9, characterized in that, include: Place the cable (5) inside the extrusion assembly (12); The fixing unit (2) is placed on the extrusion assembly (12) along the outgoing direction of the cable (5); Place the tightening assembly (11) on the fixing unit (2) along the outgoing direction of the cable (5), and place the connecting assembly (13) into the squeezing assembly (12); The cable pipe sealing device is pushed into the cable pipe (4) along the direction of the cable (5) exiting, and the connecting assembly (13) is tightened. The squeezing assembly (12) squeezes the fixing unit (2) and the tightening assembly (11) to seal the gap between the cable pipe (4) and the cable (5).