Anti-bending device for cable penetrating and isolating circular sealing system

Abstract

The utility model provides an anti-bending device for a cable penetrating and separating circular sealing system, which comprises a supporting device and a sealing device, the supporting device is connected with the sealing device, the supporting device and the sealing device are both arranged on the outer side of a cable, the supporting device is arranged at the cable outlet end of the sealing device, and the supporting device is composed of a first supporting device and a second supporting device. The first supporting device and the second supporting device are detachably arranged on the outer side of the cable, a cavity is formed in the first supporting device and the second supporting device after the first supporting device and the second supporting device are connected, and the cable is arranged in the cavity. According to the anti-bending device for the cable penetrating through the circular sealing system, the sealing effect of the bending section of the end, close to the sealing device, of the cable can be effectively improved after the cable penetrates through the circular sealing system, the sealing performance between the cable and a wall penetrating through the cable is enhanced, the reliability of the sealing system is improved, and the service life of the sealing system is prolonged. The smoothness between the cable and the front and rear ends of the sealing device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cable installation, in particular to a cable anti-bending device used when the cable passes through a circular sealing system. Background Art

[0002] For the current cable penetration circular sealing systems used in power systems and ships, the basic structure is mostly a combination of a rubber seal and a metal fastening device, such as Figure 1 and Figure 2 As shown, for cables with small diameters, the rubber structure can play a sealing role, but the sealing effect of cables with large diameters is difficult to guarantee, especially in curved sections of cable lines. The cable needs to bend, resulting in unilateral squeezing of the rubber sealing structure, causing the performance of the sealing system to degrade or even fail.

[0003] At present, power system cables are mostly used when passing through walls. Figure 2 The sealing device shown in the figure is pre-buried with a sleeve matching the outer diameter of the sealing device before the wall construction is completed. During the cable construction, the sealing system is installed in the sleeve, and the cable passes through the center of the sealing system. By tightening the bolts on the sealing system, the fastening device compresses the rubber structure, causing the rubber to deform and fill the space between the cable and the sleeve, thereby achieving a sealing effect. In this structure, when the cable passes through the sealing system in a straight line, the rubber is only subjected to the pressure of the fastening device, the rubber is uniformly deformed, and the sealing effect is good. However, for the case where the cable is close to one end of the sealing device in the curved section, since the cable line needs to be bent and the bending radius is related to the cable diameter, the larger the cable diameter, the greater the bending force required, resulting in the rubber area in contact with the cable surface being squeezed in the bending direction of the cable and deforming greatly, and the rubber area opposite to the bending direction of the cable is less compressed and deformed less, resulting in uneven compression deformation of the rubber on the inner surface of the sealing system structure, reducing the performance of the sealing system, and seriously causing the sealing performance to fail. Therefore, it is of great significance to study how to improve the bending resistance of the cable.

[0004] Patent CN206442087U mentions a wall support structure for laying cables in a communication project, including a C-shaped support member, a gasket is provided on the left side of the support member, a screw for connecting to the wall is provided on the inner side of the support member, and the screw passes through the gasket, a connector is provided on the right side of the support member, and both ends of the connector have plug rods, and the plug rods are inserted into the support member, a first screw is provided between the support member and the plug rod, a cross plate is provided at the inner side of the connector, and the inner side of the support member is provided with a screw. A socket is arranged on the side, the horizontal plate is inserted into the socket, a second screw is fitted between the socket and the horizontal plate, a plurality of through holes are arranged on the front end surface of the horizontal plate, the through holes penetrate the horizontal plate, arc-shaped positioning grooves are arranged on the upper and lower surfaces of the horizontal plate, which can solve the wall support for cable laying in communication projects supported by multiple sleeves, and the price is low, but it plays a supporting role for the incoming cables, and it is arranged on the wall, the effect of improving the sealing of the cables passing through the wall is poor, and the cable has weak anti-bending ability. Utility Model Content

[0005] In view of this, the utility model aims to propose an anti-bending device for a circular sealing system for cable penetration, so as to solve the problem in the prior art that after the cable passes through the wall, the sealing device used can have a good sealing effect in the straight section of the cable, but the sealing effect in the bent section of the cable close to one end of the sealing device is poor; thereby effectively improving the sealing effect of the bent section of the cable close to one end of the sealing device after the cable passes through the circular sealing system, enhancing the sealing between the cable and the wall passed through, improving the reliability of the sealing system, and improving the smoothness between the cable and the front and rear ends of the sealing device.

[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0007] The utility model relates to an anti-bending device for a cable penetration circular sealing system, comprising a supporting device and a sealing device, wherein the supporting device is connected to the sealing device, the supporting device and the sealing device are both arranged on the outside of the cable, the supporting device is arranged at the cable outlet end of the sealing device, the supporting device is composed of a first supporting device and a second supporting device, the first supporting device and the second supporting device are arranged on the outside of the cable in a detachable manner, a cavity is formed inside after the first supporting device is connected to the second supporting device, the cable is arranged in the cavity, and the coordinated arrangement of the first supporting device and the second supporting device provides support for the portion of the cable close to the sealing device, thereby improving the smoothness of the cable.

[0008] Furthermore, the supporting device comprises a fastening gasket, a restraining sleeve and a supporting ring, the fastening gasket is connected to the supporting ring through the restraining sleeve, and a side of the fastening gasket away from the restraining sleeve is connected to the sealing device.

[0009] Furthermore, the fastening gasket is composed of a first gasket and a second gasket, the restraining sleeve is composed of a first arc plate and a second arc plate, the supporting ring is composed of a first supporting ring and a second supporting ring, the first gasket, the first arc plate, and the first supporting ring are connected in sequence to form a first supporting device, the second gasket, the second arc plate, and the second supporting ring are connected in sequence to form a second supporting device, the side of the first gasket away from the first arc plate is connected to the sealing device, and the side of the second gasket away from the second arc plate is connected to the sealing device.

[0010] Furthermore, there is a certain angle between the restraining sleeve and the fastening gasket.

[0011] Furthermore, the angle between the fastening gasket and the restraining sleeve is recorded as α2, and α2 is an obtuse angle.

[0012] Furthermore, the outer diameter of the end of the constraint sleeve close to the fastening gasket is d1 mm, and the outer diameter of the end of the constraint sleeve close to the supporting ring is d2 mm, wherein d1>d2.

[0013] Furthermore, the inner diameter of the fastening gasket is recorded as d3 mm, d3 = d1 + β, where β is the error coefficient.

[0014] Furthermore, the supporting device also includes bolt holes, which are arranged on the fastening gasket. There are n bolt holes, where n is a positive even number, and the n bolt holes are evenly distributed along the circumference on the fastening gasket.

[0015] Furthermore, the sealing device comprises a fastening device and a rubber tube, and the fastening device is connected to a side of the fastening gasket away from the restraining sleeve through the rubber tube.

[0016] Furthermore, the fastening device is provided with through holes, and n through holes are provided, where n is a positive even number. The positions of the through holes correspond to the positions of the bolt holes on the fastening gasket, and bolts are provided in the bolt holes and the through holes.

[0017] Compared with the prior art, the anti-bending device of the cable penetration circular sealing system described in the utility model has the following beneficial effects:

[0018] The device can effectively improve the sealing effect of the bent section of the cable close to one end of the sealing device after the cable passes through the circular sealing system, enhance the sealing between the cable and the wall passed through, improve the reliability of the sealing system, and improve the smoothness between the cable and the front and rear ends of the sealing device, thereby greatly improving the strength of the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0020] Figure 1It is a structural schematic diagram of a circular sealing system for cable penetration in the prior art;

[0021] Figure 2 It is a schematic diagram of the AA section of the structure of the cable transit circular sealing system in the prior art;

[0022] Figure 3 This is a schematic diagram of the front view of the cable support device of this application;

[0023] Figure 4 This is a schematic diagram of a top view of the cable support device of the present application;

[0024] Figure 5 This is a schematic diagram of a left side view (side view) of the cable support device of the present application;

[0025] Figure 6 This is a schematic diagram of a three-dimensional view of the cable support device of this application;

[0026] Figure 7 This is a schematic cross-sectional view of the cable support device and cable assembly structure of the circular sealing device of the present application.

[0027] Explanation of the accompanying drawings: 1. Support device; 101. Support device one; 102. Support device two; 11. Fastening gasket; 111. First gasket; 112. Second gasket; 12. Constraint sleeve; 121. First arc plate; 122. Second arc plate; 13. Support ring; 131. Support ring one; 132. Support ring two; 14. Bolt hole; 2. Sealing device; 21. Fastening device; 22. Rubber tube; 211. Through hole. DETAILED DESCRIPTION

[0028] The following will use the terms commonly used by those skilled in the art to convey the essence of their work to other technical personnel in the art to describe the utility model concepts of the present disclosure. However, these utility model concepts can be embodied in many different forms and should not be considered as limited to the embodiments described herein.

[0029] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0030] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0031] This embodiment is aimed at cable installation, and similar to conventional cable installation technology, the overall structure is composed of bolts, wall sleeves, and cables.

[0032] In the prior art, the basic structure of the circular sealing system for cable penetrations currently used in power systems and ships is mostly a combination of a rubber sealing body and a metal fastening device. For cables with small diameters, the rubber structure can play a sealing role, but the sealing effect of cables with large diameters is difficult to guarantee, especially in the curved sections of the cable line. The cable needs to be bent, which causes one-sided squeezing of the rubber sealing structure, resulting in reduced performance or even failure of the sealing system.

[0033] In order to solve the problem in the prior art that after the cable passes through the wall, the sealing device 2 used can have a good sealing effect in the straight section of the cable, but the sealing effect is poor in the bending section of the cable near one end of the sealing device 2; this embodiment proposes an anti-bending device for a cable penetration circular sealing system, including a supporting device 1 and a sealing device 2, the supporting device 1 is connected to the sealing device 2, the supporting device 1 and the sealing device 2 are both arranged on the outside of the cable, the supporting device 1 is arranged at the cable outlet end of the sealing device 2, the supporting device 1 is composed of a first supporting device 101 and a second supporting device 102, the first supporting device 101 and the second supporting device 102 are arranged on the outside of the cable in a detachable manner, a cavity is formed inside after the first supporting device 101 and the second supporting device 102 are connected, the cable is arranged in the cavity, the first supporting device 101 and the second supporting device 102 are matched to provide support for the portion of the cable close to the sealing device 2, and the smoothness of the cable is improved, wherein the supporting device 1 and the sealing device 2 form a circular sealing system.

[0034] The setting of the bending device can effectively improve the sealing effect of the bending section of the cable close to the sealing device 2 after the cable passes through the circular sealing system, enhance the sealing between the cable and the wall passed through, improve the reliability of the sealing system, and improve the smoothness between the cable and the front and rear ends of the sealing device 2.

[0035] The support device 1 includes a fastening gasket 11, a constraint sleeve 12 and a support ring 13. The fastening gasket 11 is connected to the support ring 13 through the constraint sleeve 12, and the side of the fastening gasket 11 away from the constraint sleeve 12 is connected to the sealing device 2; the fastening gasket 11 is composed of a first gasket 111 and a second gasket 112, the constraint sleeve 12 is composed of a first arc plate 121 and a second arc plate 122, and the support ring 13 is composed of a first support ring 131 and a second support ring 132. The first gasket 111, the first arc plate 121, and the first support ring 131 are connected in sequence to form a first support device 101, and the second gasket 112, the second arc plate 122, and the second support ring 132 are connected in sequence to form a second support device 102. The first gasket 111 is away from the first arc plate 12 One side of 1 is connected to the sealing device 2, and the side of the second gasket 112 away from the second arc plate 122 is connected to the sealing device 2; the first gasket 111 and the second gasket 112 are both semicircular ring-shaped, the first arc plate 121 and the second arc plate 122 are both arc-shaped, the constraint sleeve 12 is a hollow truncated cone, which is used to facilitate the passage of the cable and support the cable, and the support ring 13 and the fastening gasket 11 are both annular; the constraint sleeve 12 has a certain angle with the support ring 13 and the fastening gasket 11 respectively; the support ring 13 and the constraint sleeve 12 are integrally formed, the angle between the support ring 13 and the constraint sleeve 12 is recorded as α1, and the angle between the fastening gasket 11 and the constraint sleeve 12 is recorded as α2, α2 is an obtuse angle, and the value range of α1 is [0°, 180°], the value range of α2 is (90°, 180°); the outer diameter of the constraint sleeve 12 close to the fastening gasket 11 is d1mm, and the outer diameter of the constraint sleeve 12 close to the support ring 13 is d2mm, wherein d1>d2; the inner diameter of the fastening gasket 11 is recorded as d3mm, d3=d1+β, wherein β is the error coefficient; the inner diameter of the support ring 13 = the outer diameter of the cable to be penetrated, and the inner diameter of the support ring 13 is changed in the following ways: the inner diameter of the support ring 13 is reduced by bending, and the inner diameter of the support ring 13 can also be increased by cutting the height of the constraint sleeve 12. The support ring 13 is processed by bending or cutting, so that the support device 1 can be easily adapted to different straight cables. diameter cable support requirements; the supporting device 1 also includes a bolt hole 14, the bolt hole 14 is arranged through the fastening gasket 11, the bolt hole 14 is arranged n, n is a positive even number, and the n bolt holes 14 are evenly distributed along the circumference of the fastening gasket 11; in the present embodiment, the material of the supporting device 1 is metal, but it is not limited to this, and it is specifically set according to the requirements, and the inner diameter, outer diameter and thickness of the fastening gasket 11 are set according to the requirements, the restraining sleeve 12 is welded to the fastening gasket 11, or the restraining sleeve 12 and the fastening gasket 11 are integrally formed by casting, and the wall thickness and strength of the restraining sleeve 12 are selected according to the diameter of the cable to be passed, so as to meet the requirements of supporting cables with different bending degrees.

[0036] By coordinating the restraining sleeve 12 composed of two semi-conical metal sleeves and the sealing device 2, the sealing device 2 can achieve a good sealing effect on cables with different degrees of bending. In addition, the support device 1 is arranged in a detachable manner, and a complete support device 1 is formed by connecting the first support device 101 and the second support device 102. This can effectively improve the disassembly and assembly efficiency of the support device 1, and can also facilitate the rapid adjustment of the size of the support ring 13 of the support device 1 close to the end of the restraining sleeve 12 according to the diameter of different cables, thereby improving the adjustment flexibility of the support device 1, enhancing the application scope of the support device 1, enhancing the practicality and safety of the support device 1, and can also improve the support strength of the support device 1 for the cable.

[0037] The sealing device 2 includes a fastening device 21 and a rubber tube 22. The fastening device 21 is connected to the side of the fastening gasket 11 away from the constraint sleeve 12 through the rubber tube 22. The fastening device 21 is used to support and fix the rubber tube 22 under the action of the fastening device 21 and the fastening gasket 11, and can provide support for the cable bending part to ensure that the straight section or curved section of the cable after passing through the wall has a good sealing effect; the fastening device 21 is provided with a through hole 211, and the through hole 211 is provided with n holes, n is a positive even number, and the setting position of the through hole 211 corresponds to the setting position of the bolt hole 14 on the fastening gasket 11. Bolts are set in the bolt hole 14 and the through hole 211, which is used to facilitate the connection of the fastening device 21 and the fastening gasket 11 through the setting of the bolts, and strengthen the fixation of the rubber tube 22.

[0038] In view of the working condition of the cable penetrating the circular sealing system when used in the cable bending curve section, the cable support device 1 is designed to transfer the cable bending point from the port of the sealing device 2 to the support port of the cable support device 1, that is, the connection end of the support ring 13 and the restraining sleeve 12, thereby ensuring the smoothness of the cable between the port of the sealing device 2 and the support port, effectively realizing the excellent sealing function of the anti-bending device and avoiding failure of the sealing performance.

[0039] Installation principle:

[0040] Before the wall construction is completed, a sleeve matching the outer diameter of the sealing device 2 is pre-buried. During cable construction, the sealing device 2 is installed in the sleeve, and the circular sealing device 2 is connected to one end of the cable support device 1 with the fastening gasket 11. Bolts are used to connect the fastening device 21 through the bolt holes 14 in the fastening gasket 11. The cable support device 1 is fixedly connected to the fastening device 21 through the bolts. By tightening the bolts, the support device 1 and the fastening device 21 compress the rubber tube 22 arranged therebetween, so that the rubber tube 22 is compressed and deformed to achieve a sealing effect. At the same time, the support ring 13 in the cable support device 1 is close to the end of the constraint sleeve 12 and fits with the cable. When the cable needs to be bent in a curved section, the cable is bent at the position of the support ring 13 close to the end of the restraining sleeve 12; through the arrangement of the utility model, the smoothness of the cable between the support port (i.e. the end of the support ring 13 close to the restraining sleeve 12) and the port of the sealing device 2 (i.e. the end of the sealing device 2 close to the fastening gasket 11) can be effectively guaranteed, and the port position of the sealing device 2 is prevented from being affected by the bending of the cable, resulting in uneven deformation and force on the rubber tube 22. At the same time, the pressure of the cable bending is transmitted to the contact surface between the fastening gasket 11 and the rubber tube 22 through the support port and the restraining sleeve 12, so that the rubber structure is compressed more densely, thereby ensuring the sealing performance of the sealing device 2.

[0041] In the utility model, for any cable installation, it can include a cable penetration circular sealing system anti-bending device structure described in this embodiment, and based on the relevant structure and assembly relationship of the restraining sleeve 12 and the rubber tube 22 provided in this embodiment, the cable installation also includes conventional components including bolts, wall sleeves, cables and other structures. Since they are all existing technologies, they will not be described here.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable penetration circular sealing system anti-bending device, characterized in that: The invention comprises a supporting device (1) and a sealing device (2), wherein the supporting device (1) is connected to the sealing device (2), and both the supporting device (1) and the sealing device (2) are arranged outside the cable, and the supporting device (1) is arranged at the cable outlet end of the sealing device (2). The supporting device (1) is composed of a first supporting device (101) and a second supporting device (102), and the first supporting device (101) and the second supporting device (102) are arranged outside the cable in a detachable manner. After the first supporting device (101) and the second supporting device (102) are connected, a cavity is formed inside, and the cable is arranged in the cavity. Through the coordinated arrangement of the first supporting device (101) and the second supporting device (102), support is provided for the portion of the cable close to the sealing device (2), thereby improving the smoothness of the cable.

2. The cable transit circular sealing system anti-bending device according to claim 1, characterized in that: The support device (1) comprises a fastening gasket (11), a restraining sleeve (12) and a support ring (13); the fastening gasket (11) is connected to the support ring (13) via the restraining sleeve (12); and the side of the fastening gasket (11) away from the restraining sleeve (12) is connected to the sealing device (2).

3. The cable transit circular sealing system anti-bending device according to claim 2, characterized in that: The fastening gasket (11) is composed of a first gasket (111) and a second gasket (112); the restraining sleeve (12) is composed of a first arc plate (121) and a second arc plate (122); the supporting ring (13) is composed of a first supporting ring (131) and a second supporting ring (132); the first gasket (111), the first arc plate (121), and the first supporting ring (131) are sequentially connected to form a first supporting device (101); the second gasket (112), the second arc plate (122), and the second supporting ring (132) are sequentially connected to form a second supporting device (102); the side of the first gasket (111) away from the first arc plate (121) is connected to the sealing device (2); and the side of the second gasket (112) away from the second arc plate (122) is connected to the sealing device (2).

4. The cable transit circular sealing system anti-bending device according to claim 2, characterized in that: There is a certain angle between the restraining sleeve (12) and the fastening gasket (11).

5. The cable transit circular sealing system anti-bending device according to claim 4, characterized in that: The angle between the fastening gasket (11) and the restraining sleeve (12) is denoted as α2, and α2 is an obtuse angle.

6. The cable transit circular sealing system anti-bending device according to claim 2, characterized in that: The outer diameter of the end of the constraint sleeve (12) close to the fastening gasket (11) is d1 mm, and the outer diameter of the end of the constraint sleeve (12) close to the supporting ring (13) is d2 mm, wherein d1>d2.

7. The cable transit circular sealing system anti-bending device according to claim 6, characterized in that: The inner diameter of the fastening gasket (11) is denoted as d3 mm, d3=d1+β, wherein β is an error coefficient.

8. The cable transit circular sealing system anti-bending device according to claim 2, characterized in that: The support device (1) further comprises a bolt hole (14), wherein the bolt hole (14) is arranged on the fastening gasket (11), wherein n bolt holes (14) are arranged, n being a positive even number, and the n bolt holes (14) are evenly distributed along the circumference on the fastening gasket (11).

9. The cable transit circular sealing system anti-bending device according to claim 1, characterized in that: The sealing device (2) comprises a fastening device (21) and a rubber tube (22), wherein the fastening device (21) is connected to a side of the fastening gasket (11) away from the restraining sleeve (12) via the rubber tube (22).

10. The cable transit circular sealing system anti-bending device according to claim 9, characterized in that: The fastening device (21) is provided with through holes (211), and n through holes (211) are provided, where n is a positive even number. The positions of the through holes (211) correspond to the positions of the bolt holes (14) on the fastening gasket (11), and bolts are provided in the bolt holes (14) and the through holes (211).

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