Large-diameter single cable modularized reducing sealing device

Abstract

The invention relates to the field of cable sealing, and provides a large-diameter single cable modular reducing sealing device, which comprises at least two sealing module units, and a first mounting space is defined between the at least two sealing module units; the sealing module unit comprises an inner ring body, the inner surface of the inner ring body is in contact with the cable, and the inner ring body has elasticity; the outer ring body is arranged on the outer side of the inner ring body, the outer surface of the outer ring body is in contact with a structural body through which a cable penetrates, the outer ring body has elasticity, and a trapezoidal mounting space is formed between the outer ring body and the inner ring body; a trapezoidal connecting bulge structure is arranged on one side, close to the trapezoidal mounting space, of the pressing structure assembly; the fastener assembly comprises a first fastener and a second fastener which are symmetrically arranged on the upper side and the lower side of the sealing module unit. The modularized reducing sealing device for the large-diameter single cable can adapt to sealing of cables with different diameters, can be repeatedly used and is good in sealing performance.

Description

Technical Field

[0001] The invention relates to the field of cable sealing, and in particular to a modular variable diameter sealing device for a large-diameter single cable. Background Art

[0002] With the development of social construction, more and more industries have increasing demands for electrification, and the corresponding cable usage and sealing requirements are also gradually increasing.

[0003] When the cable is in use, it is inevitable to pass through the structural parts, and there must be a gap between the structural opening and the cable. For cables with large diameters, seals with peelable core layers are currently used to seal pipelines of different diameters by peeling the core layer. In the prior art, the patent application number CN201510897008.7 discloses a variable diameter sealing module, including two elastic outer shell half blocks, the elastic outer shell half blocks are provided with a semicircular groove, the groove is covered with an elastic sheet layer, the elastic sheet layer is formed by stacking multiple layers of peelable elastic sheets, and the upper and lower surfaces of each layer of the peelable elastic sheet are respectively provided with a convex structure and a concave structure, the width of the convex structure matches the width of the concave structure, the height of the convex structure matches the depth of the concave structure, and the convex structure and the concave structure of the adjacent two layers of the peelable elastic sheet are connected by interlocking, and after the two elastic outer shell half blocks are connected, a circular through hole is formed inside, and the through hole can be used for the passage of cables or pipelines. Although this patent achieves sealing of the gap between cables with different outer diameters and the structure, this sealing structure cannot adapt to sealing devices with different cable diameters. When the cable needs to be replaced, the seal with the core layer stripped off needs to be re-adapted to the new cable. In particular, when the diameter of the new cable is reduced, the core layer of the seal is missing and a new seal must be replaced, resulting in a waste of resources. In addition, the sealing effect is poor.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The purpose of the present invention is to propose a modular variable diameter sealing device for a large-diameter single cable to solve the problem that the sealing structure in the prior art cannot adapt to sealing devices with different cable diameters. When the cable needs to be replaced, the seal with the core layer stripped off needs to be re-adapted to the new cable. In particular, when the diameter of the new cable is reduced, the core layer of the seal is missing and a new seal needs to be replaced, resulting in a waste of resources. In addition, the sealing effect is poor.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A large-diameter single cable modular variable-diameter sealing device, the large-diameter single cable modular variable-diameter sealing device is used to seal the gap between cables of different diameters and a structure through which the cable passes;

[0008] The large-diameter single cable modular variable-diameter sealing device comprises at least two sealing module units, and a first installation space is enclosed between the at least two sealing module units, and the first installation space is used to install the cable;

[0009] The sealing module unit comprises:

[0010] An inner ring body, the inner surface of which is in contact with the cable, and the inner ring body is elastic;

[0011] An outer ring body, which is arranged outside the inner ring body, an outer surface of which is in contact with a structure through which the cable passes, and has elasticity, and a trapezoidal installation space is formed between the outer ring body and the inner ring body;

[0012] A clamping structure assembly, wherein a trapezoidal connecting protrusion structure is arranged on one side of the clamping structure assembly close to the trapezoidal installation space, wherein the trapezoidal connecting protrusion structure matches the trapezoidal installation space, and during installation, the trapezoidal connecting protrusion structure is gradually pressed into the trapezoidal installation space by a third connecting member;

[0013] A fastener assembly, the fastener assembly includes a first fastener and a second fastener, the first fastener and the second fastener are symmetrically arranged on the upper and lower sides of the sealing module unit.

[0014] The present invention discloses a modular variable-diameter sealing device for a large-diameter single cable, wherein the inner ring body and the outer ring body are elastic, a trapezoidal installation space is formed between the outer ring body and the inner ring body, and a trapezoidal connecting protrusion structure is arranged on a side close to the trapezoidal installation space of the clamping structure assembly, the trapezoidal connecting protrusion structure cooperates with the trapezoidal installation space, and during installation, the trapezoidal connecting protrusion structure is gradually pressed into the trapezoidal installation space by a third connecting member, so that the outer surface of the outer ring body is tightly fitted with the structural opening through which the cable passes, and the inner surface of the inner ring body is tightly fitted with the cable; the inner ring body, the outer ring body, the clamping structure assembly and the fastener assembly are interrelated, and play multiple roles: first, it can be adapted to the sealing of cables of different diameters; and it can be reused to avoid wasting resources; second, it has good sealing performance and can be applied in projects with high sealing requirements; third, it is convenient and quick to install.

[0015] Furthermore, a first trapezoidal protrusion is arranged on the outer side of the inner ring body, and a second trapezoidal protrusion is arranged on the inner side of the outer ring body, the first trapezoidal protrusion cooperates with the second trapezoidal protrusion to form a second installation space, and the trapezoidal installation space is arranged in the second installation space.

[0016] Furthermore, the trapezoidal installation space includes a first installation trapezoidal groove and a second installation trapezoidal groove; the first installation trapezoidal groove and the second installation trapezoidal groove are symmetrically arranged on the upper and lower sides of the second installation space, and the trapezoidal connecting protrusion structure includes a first trapezoidal connecting protrusion and a second trapezoidal connecting protrusion; the first trapezoidal connecting protrusion is installed in the first installation trapezoidal groove, and the second trapezoidal connecting protrusion is arranged in the second installation trapezoidal groove.

[0017] Furthermore, the clamping structure assembly includes a first clamping structure and a second clamping structure, the first trapezoidal connecting protrusion is arranged on the first clamping structure, and the second trapezoidal connecting protrusion is arranged on the second clamping structure.

[0018] Furthermore, the second installation space also includes a first installation groove, which is used for installing the third connecting member, and the first installation groove is arranged between the first installation trapezoidal groove and the second installation trapezoidal groove.

[0019] Furthermore, the first trapezoidal protrusion includes a first contact bevel and a first connecting plane, and the first contact bevel is symmetrically arranged on the upper and lower sides of the first connecting plane; the second trapezoidal protrusion includes a second contact bevel and a second connecting plane, and the second contact bevel is symmetrically arranged on the upper and lower sides of the second connecting plane, and the first connecting plane and the second connecting plane cooperate to form a first installation groove.

[0020] Furthermore, a third contact slope is provided on the inner side of the trapezoidal connecting protrusion structure, and a fourth contact slope is provided on the outer side of the trapezoidal connecting protrusion structure, the first contact slope matches with the third contact slope, and the second contact slope matches with the fourth contact slope.

[0021] Furthermore, a second mounting hole is set on the first clamping structure, and a third mounting hole is set on the second clamping structure. The third mounting hole cooperates with the second mounting hole, and the third connecting member passes through the second mounting hole, the first mounting groove, and the third mounting hole in sequence to install the sealing module unit in the gap between the cable and the structure through which the cable passes.

[0022] Furthermore, the first fastening member is arranged above the first pressing structure, and the second fastening member is arranged below the second pressing structure.

[0023] Furthermore, a first mounting hole is set on the first fastener, and a fourth mounting hole is set on the second fastener, the first mounting hole cooperates with the second mounting hole; the fourth mounting hole cooperates with the third mounting hole, and the third connecting member passes through the first mounting hole, the second mounting hole, the first mounting groove, the third mounting hole, and the fourth mounting hole in sequence to install the sealing module unit in the gap between the cable and the structure through which the cable passes.

[0024] Compared with the prior art, the large-diameter single cable modular variable diameter sealing device described in the present invention has the following beneficial effects:

[0025] The present invention discloses a modular variable-diameter sealing device for a large-diameter single cable, wherein the inner ring body and the outer ring body are elastic, a trapezoidal installation space is formed between the outer ring body and the inner ring body, and a trapezoidal connecting protrusion structure is arranged on a side close to the trapezoidal installation space of the clamping structure assembly, the trapezoidal connecting protrusion structure cooperates with the trapezoidal installation space, and during installation, the trapezoidal connecting protrusion structure is gradually pressed into the trapezoidal installation space by a third connecting member, so that the outer surface of the outer ring body is tightly fitted with the structural opening through which the cable passes, and the inner surface of the inner ring body is tightly fitted with the cable; the inner ring body, the outer ring body, the clamping structure assembly and the fastener assembly are interrelated, and play multiple roles: first, it can be adapted to the sealing of cables of different diameters; and it can be reused to avoid wasting resources; second, it has good sealing performance and can be applied in projects with high sealing requirements; third, it is convenient and quick to install. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of a modular variable diameter sealing device for a large-diameter single cable according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic top view of the structure of a modular variable diameter sealing device for a large-diameter single cable according to an embodiment of the present invention;

[0028] Figure 3 For along Figure 2 Schematic diagram of the cross-section structure along the middle section line AA;

[0029] Figure 4 This is one of the exploded structural schematic diagrams of a large-diameter single cable modular variable-diameter sealing device according to an embodiment of the present invention;

[0030] Figure 5 This is a second schematic diagram of the explosion structure of a large-diameter single cable modular variable-diameter sealing device according to an embodiment of the present invention.

[0031] Description of reference numerals:

[0032] 2. Inner ring body; 21. First trapezoidal protrusion; 211. First contact slope; 212. First connection plane; 3. Outer ring body; 31. Second trapezoidal protrusion; 311. Second contact slope; 312. Second connection plane; 4. Clamping structure assembly; 41. First clamping structure; 411. Second mounting hole; 42. Second clamping structure; 421. Third mounting hole; 401. Third contact slope; 402. Fourth contact slope; 403. Clamping body structure; 4031. First clamping body; 4032 , second clamping body; 40, trapezoidal connecting protrusion structure; 4011, first trapezoidal connecting protrusion; 4012, second trapezoidal connecting protrusion; 5, fastener assembly; 51, first fastener; 511, first mounting hole; 52, second fastener; 521, fourth mounting hole; 101, sealing module unit; 102, first mounting space; 104, second mounting space; 1041, first mounting groove; 103, trapezoidal mounting space; 1031, first mounting trapezoidal groove; 1032, second mounting trapezoidal groove. DETAILED DESCRIPTION

[0033] 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. The descriptions of "first", "second", etc. mentioned in the embodiments of the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0035] Example 1

[0036] In the prior art, an opening is provided on a structure through which a cable passes, and the opening is used for the cable to pass through. The existing sealing structure cannot adapt to sealing devices with different cable diameters. When the cable needs to be replaced, the seal with the core layer stripped off needs to be re-adapted to the new cable. In particular, when the diameter of the new cable is reduced, the core layer of the seal is missing and a new seal needs to be replaced, resulting in a waste of resources. In addition, there is the problem of poor sealing effect.

[0037] In order to solve the above technical problems, the present invention proposes a large-diameter single cable modular variable diameter sealing device, such as Figures 1 to 5 As shown, the large-diameter single cable modular variable-diameter sealing device is used to seal the gap between cables of different diameters and the structure through which the cables pass;

[0038] The large-diameter single cable modular variable-diameter sealing device comprises at least two sealing module units 101, and a first installation space 102 is formed between the at least two sealing module units 101. The first installation space 102 is matched with the cable, and the first installation space 102 is used to install the cable;

[0039] The sealing module unit 101 includes:

[0040] An inner ring body 2, the inner surface of which is in contact with the cable, and the inner ring body 2 is elastic, so that the inner ring body 2 can fit tightly with cables of different diameters;

[0041] An outer ring body 3, the outer ring body 3 is arranged outside the inner ring body 2, the outer surface of the outer ring body 3 is in contact with the structure through which the cable passes, and the outer ring body 3 is elastic, so that the outer ring body 3 can fit closely with the structure through which the cable passes; a trapezoidal installation space 103 is formed between the outer ring body 3 and the inner ring body 2;

[0042] The clamping structure component 4 is provided with an upper trapezoidal connecting protrusion structure 40 on a side close to the trapezoidal installation space 103, and the trapezoidal connecting protrusion structure 40 cooperates with the trapezoidal installation space 103. During installation, the trapezoidal connecting protrusion structure 40 is gradually pressed into the trapezoidal installation space 103 through a third connecting member.

[0043] The modular variable diameter sealing device for a large-diameter single cable described in the present invention has an inner ring body 2 and an outer ring body 3 that are elastic, so that they can fit tightly against the cable and the structure through which the cable passes, providing a good sealing effect; a trapezoidal installation space 103 is formed between the outer ring body 3 and the inner ring body 2, and a trapezoidal connecting protrusion structure 40 is provided on one side of the compression structure component 4 close to the trapezoidal installation space 103, and the trapezoidal connecting protrusion structure 40 cooperates with the trapezoidal installation space 103, and during installation, the compression structure component 4 can be gradually retracted through the third connecting piece. The trapezoidal connecting protrusion structure 40 is compressed into the trapezoidal installation space 103, so that the outer surface of the outer ring body 3 is tightly fitted with the structural opening through which the cable passes, and the inner surface of the inner ring body 2 is tightly fitted with the cable; the inner ring body 2, the outer ring body 3 and the clamping structure assembly 4 are interrelated and play multiple roles: First, it can be adapted to the sealing of cables of different diameters; and it can be reused to avoid wasting resources; second, it has good sealing performance and can be used in projects with high sealing requirements; third, the modular design makes the installation process simple and quick.

[0044] Specifically, the large-diameter single cable modular variable-diameter sealing device described in the present invention can achieve the sealing of a single cable with an outer diameter of more than 100 mm.

[0045] Specifically, the number of the sealing module units 101 is not specifically limited. The number of the sealing module units 101 may be two, the number of the sealing module units 101 may be three, or the number of the sealing module units 101 may be four, but is not limited thereto.

[0046] In this embodiment, there are two sealing module units 101. The large-diameter single cable modular variable-diameter sealing device includes two sealing module units 101, and a first installation space 102 is formed between the two sealing module units 101. This arrangement can improve the structural stability of the large-diameter single cable modular variable-diameter sealing device.

[0047] Specifically, the third connecting member is not specifically limited here. The third connecting member can be a bolt, or a nut, but is not limited thereto.

[0048] In this embodiment, the third connecting member may be a bolt.

[0049] Specifically, the material of the clamping structure assembly 4 is non-metallic.

[0050] Specifically, a first trapezoidal protrusion 21 is provided on the outer side of the inner ring body 2 , and a second trapezoidal protrusion 31 is provided on the inner side of the outer ring body 3 . The first trapezoidal protrusion 21 cooperates with the second trapezoidal protrusion 31 to form a second installation space 104 , and the trapezoidal installation space 103 is provided in the second installation space 104 .

[0051] Specifically, the trapezoidal installation space 103 includes a first installation trapezoidal groove 1031 and a second installation trapezoidal groove 1032; the first installation trapezoidal groove 1031 and the second installation trapezoidal groove 1032 are symmetrically arranged on the upper and lower sides of the second installation space 104, and the trapezoidal connecting protrusion structure 40 includes a first trapezoidal connecting protrusion 4011 and a second trapezoidal connecting protrusion 4012; the first trapezoidal connecting protrusion 4011 is installed in the first installation trapezoidal groove 1031, and the second trapezoidal connecting protrusion 4012 is arranged in the second installation trapezoidal groove 1032.

[0052] Specifically, the clamping structure assembly 4 includes a first clamping structure 41 and a second clamping structure 42 , the first trapezoidal connecting protrusion 4011 is arranged on the first clamping structure 41 , and the second trapezoidal connecting protrusion 4012 is arranged on the second clamping structure 42 .

[0053] Specifically, the second installation space 104 also includes a first installation groove 1041, which is used for installing the third connecting member. The first installation groove 1041 is arranged between the first installation trapezoidal groove 1031 and the second installation trapezoidal groove 1032, and the first installation groove 1041 is connected to the first installation trapezoidal groove 1031 and the second installation trapezoidal groove 1032.

[0054] Specifically, the first trapezoidal protrusion 21 includes a first contact bevel 211 and a first connecting plane 212, and the first contact bevel 211 is symmetrically arranged on the upper and lower sides of the first connecting plane 212; the second trapezoidal protrusion 31 includes a second contact bevel 311 and a second connecting plane 312, and the second contact bevel 311 is symmetrically arranged on the upper and lower sides of the second connecting plane 312, and the first connecting plane 212 cooperates with the second connecting plane 312 to form a first installation groove 1041.

[0055] Specifically, a third contact bevel 401 is provided on the inner side of the trapezoidal connecting protrusion structure 40 , and a fourth contact bevel 402 is provided on the outer side of the trapezoidal connecting protrusion structure 40 . The first contact bevel 211 cooperates with the third contact bevel 401 , and the second contact bevel 311 cooperates with the fourth contact bevel 402 .

[0056] Specifically, a second mounting hole 411 is set on the first clamping structure 41, and a third mounting hole 421 is set on the second clamping structure 42. The third mounting hole 421 cooperates with the second mounting hole 411. The third connecting member passes through the second mounting hole 411, the first mounting groove 1041, and the third mounting hole 421 in sequence to install the sealing module unit 101 in the gap between the cable and the structure through which the cable passes.

[0057] Specifically, the first pressing structure 41 and the second pressing structure 42 are symmetrically installed on the upper and lower sides of the first installation groove 1041 .

[0058] Specifically, the clamping structure assembly 4 includes a clamping body structure 403 , and the trapezoidal connecting protrusion structure 40 is arranged on one side of the clamping body structure 403 close to the trapezoidal installation space 103 .

[0059] Specifically, the clamping body structure 403 includes a first clamping body 4031 and a second clamping body 4032. The first clamping body 4031 is arranged on the first clamping structure 41, and the second clamping body 4032 is arranged on the second clamping structure 42. The first clamping body 4031 is arranged above the inner ring body 2 and the outer ring body 3, and the second clamping body 4032 is arranged below the inner ring body 2 and the outer ring body 3.

[0060] The present invention proposes a modular variable-diameter sealing device for a large-diameter single cable. When it is installed and used, all the sealing module units 101 are first placed between the cable and the structure through which the cable passes. The size of the opening on the structure through which the cable passes matches the outer diameter of the outer ring body 3, and the inner diameter of the inner ring body 2 is larger than the diameter of the sealed cable; then the third connecting member is passed through the second mounting hole 411, the first mounting groove 1041, and the third mounting hole 421 in sequence to gradually press the trapezoidal connecting protrusion structure 40 into the trapezoidal mounting space 103, driving the first clamping structure 41 and the second clamping structure 42 to gradually approach each other. While approaching, the first contact bevel 211 is tightly fitted with the third contact bevel 401, and the second contact bevel 311 is tightly fitted with the fourth contact bevel 402, so that the outer surface of the outer ring body 3 is tightly fitted with the opening of the structure through which the cable passes, and the inner surface of the inner ring body 2 is tightly fitted with the cable, so that the gap between cables of different diameters and the structure through which the cable passes is finally sealed.

[0061] The modular variable diameter sealing device for a large-diameter single cable described in the present invention has an inner ring body 2 and an outer ring body 3 that are elastic, so that they can fit tightly against the cable and the structure through which the cable passes, providing a good sealing effect; a trapezoidal installation space 103 is formed between the outer ring body 3 and the inner ring body 2, and a trapezoidal connecting protrusion structure 40 is provided on one side of the compression structure component 4 close to the trapezoidal installation space 103, and the trapezoidal connecting protrusion structure 40 cooperates with the trapezoidal installation space 103, and during installation, the compression structure component 4 can be gradually retracted through the third connecting piece. The trapezoidal connecting protrusion structure 40 is compressed into the trapezoidal installation space 103, so that the outer surface of the outer ring body 3 is tightly fitted with the structural opening through which the cable passes, and the inner surface of the inner ring body 2 is tightly fitted with the cable; the inner ring body 2, the outer ring body 3 and the clamping structure assembly 4 are interrelated and play multiple roles: First, it can be adapted to the sealing of cables of different diameters; and it can be reused to avoid wasting resources; second, it has good sealing performance and can be used in projects with high sealing requirements; third, the modular design makes the installation process simple and quick.

[0062] Example 2

[0063] Different from Example 1, in this embodiment, specifically, the sealing module unit 101 also includes a fastener assembly 5, and the fastener assembly 5 includes a first fastener 51 and a second fastener 52, and the first fastener 51 and the second fastener 52 are symmetrically arranged on the upper and lower sides of the sealing module unit 101.

[0064] This arrangement can greatly improve the structural stability and sealing performance of the modular variable diameter sealing device for a large-diameter single cable.

[0065] Specifically, the material of the fastener assembly 5 is not specifically limited. The material of the fastener assembly 5 can be metal, or the material of the fastener assembly 5 can also be a composite material with relatively high hardness.

[0066] In this embodiment, the material of the fastener assembly 5 is metal. This arrangement can further improve the structural stability of the modular variable diameter sealing device for a large-diameter single cable.

[0067] More specifically, the first fastening member 51 is disposed above the first pressing structure 41 , and the second fastening member 52 is disposed below the second pressing structure 42 .

[0068] More specifically, a first mounting hole 511 is set on the first fastener 51, and a fourth mounting hole 521 is set on the second fastener 52. The first mounting hole 511 cooperates with the second mounting hole 411; the fourth mounting hole 521 cooperates with the third mounting hole 421. The third connecting member passes through the first mounting hole 511, the second mounting hole 411, the first mounting groove 1041, the third mounting hole 421, and the fourth mounting hole 521 in sequence to install the sealing module unit 101 in the gap between the cable and the structure through which the cable passes, and the final structure reaches a sealed state.

[0069] The modular variable-diameter sealing device for a large-diameter single cable described in the present invention comprises an inner ring body 2, an outer ring body 3, a clamping structure assembly 4 and a fastener assembly 5 which are interrelated and play multiple roles: first, it can be adapted to the sealing of cables of different diameters; and it can be reused to avoid wasting resources; second, it has good sealing performance and can be used in projects with high sealing requirements; third, its modular design makes the installation process simple and quick; and fourth, it greatly improves the structural stability of the modular variable-diameter sealing device for a large-diameter single cable.

[0070] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A modular variable diameter sealing device for a large diameter single cable, characterized in that: The large-diameter single cable modular variable-diameter sealing device is used to seal the gap between cables of different diameters and the structure through which the cables penetrate; The large-diameter single cable modular variable-diameter sealing device comprises at least two sealing module units (101), wherein a first installation space (102) is enclosed between the at least two sealing module units (101), and the first installation space (102) is used for installing the cable; The sealing module unit (101) comprises: An inner ring body (2), the inner surface of the inner ring body (2) is in contact with the cable, and the inner ring body (2) is elastic; An outer ring body (3), the outer ring body (3) being arranged on the outer side of the inner ring body (2), the outer surface of the outer ring body (3) being in contact with a structure through which the cable passes, the outer ring body (3) being elastic, and a trapezoidal installation space (103) being formed between the outer ring body (3) and the inner ring body (2); A pressing structure assembly (4), wherein a trapezoidal connecting protrusion structure (40) is provided on a side of the pressing structure assembly (4) close to the trapezoidal installation space (103), the trapezoidal connecting protrusion structure (40) cooperates with the trapezoidal installation space (103), and during installation, the trapezoidal connecting protrusion structure (40) is gradually pressed into the trapezoidal installation space (103) by a third connecting member; A fastener assembly (5), the fastener assembly (5) comprising a first fastener (51) and a second fastener (52), the first fastener (51) and the second fastener (52) being symmetrically arranged on the upper and lower sides of the sealing module unit (101).

2. A large-diameter single cable modular variable-diameter sealing device according to claim 1, characterized in that: A first trapezoidal protrusion (21) is arranged on the outer side of the inner ring body (2), and a second trapezoidal protrusion (31) is arranged on the inner side of the outer ring body (3); the first trapezoidal protrusion (21) and the second trapezoidal protrusion (31) cooperate to form a second installation space (104); and the trapezoidal installation space (103) is arranged in the second installation space (104).

3. A large-diameter single cable modular variable-diameter sealing device according to claim 2, characterized in that: The trapezoidal installation space (103) comprises a first installation trapezoidal groove (1031) and a second installation trapezoidal groove (1032); the first installation trapezoidal groove (1031) and the second installation trapezoidal groove (1032) are symmetrically arranged on the upper and lower sides of the second installation space (104); the trapezoidal connecting protrusion structure (40) comprises a first trapezoidal connecting protrusion (4011) and a second trapezoidal connecting protrusion (4012); the first trapezoidal connecting protrusion (4011) is installed in the first installation trapezoidal groove (1031), and the second trapezoidal connecting protrusion (4012) is arranged in the second installation trapezoidal groove (1032).

4. A large-diameter single cable modular variable-diameter sealing device according to claim 3, characterized in that: The clamping structure assembly (4) comprises a first clamping structure (41) and a second clamping structure (42), wherein the first trapezoidal connecting protrusion (4011) is arranged on the first clamping structure (41), and the second trapezoidal connecting protrusion (4012) is arranged on the second clamping structure (42).

5. A large-diameter single cable modular variable-diameter sealing device according to claim 4, characterized in that: The second installation space (104) further comprises a first installation groove (1041), wherein the first installation groove (1041) is used for installing a third connecting member, and the first installation groove (1041) is arranged between the first installation trapezoidal groove (1031) and the second installation trapezoidal groove (1032).

6. A large-diameter single cable modular variable-diameter sealing device according to claim 5, characterized in that: The first trapezoidal protrusion (21) comprises a first contact inclined surface (211) and a first connecting plane (212), and the first contact inclined surface (211) is symmetrically arranged on the upper and lower sides of the first connecting plane (212); the second trapezoidal protrusion (31) comprises a second contact inclined surface (311) and a second connecting plane (312), and the second contact inclined surface (311) is symmetrically arranged on the upper and lower sides of the second connecting plane (312), and the first connecting plane (212) and the second connecting plane (312) cooperate to form a first mounting groove (1041).

7. A large-diameter single cable modular variable-diameter sealing device according to claim 6, characterized in that: A third contact inclined surface (401) is arranged on the inner side of the trapezoidal connecting protrusion structure (40), and a fourth contact inclined surface (402) is arranged on the outer side of the trapezoidal connecting protrusion structure (40); the first contact inclined surface (211) cooperates with the third contact inclined surface (401), and the second contact inclined surface (311) cooperates with the fourth contact inclined surface (402).

8. A large-diameter single cable modular variable-diameter sealing device according to claim 7, characterized in that: A second mounting hole (411) is provided on the first clamping structure (41), and a third mounting hole (421) is provided on the second clamping structure (42); the third mounting hole (421) cooperates with the second mounting hole (411); a third connecting member sequentially passes through the second mounting hole (411), the first mounting groove (1041), and the third mounting hole (421) to install the sealing module unit (101) in a gap between the cable and the structure through which the cable passes.

9. A large-diameter single cable modular variable-diameter sealing device according to claim 8, characterized in that: The first fastening member (51) is arranged above the first pressing structure (41), and the second fastening member (52) is arranged below the second pressing structure (42).

10. A large-diameter single cable modular variable-diameter sealing device according to claim 9, characterized in that: A first mounting hole (511) is provided on the first fastener (51), and a fourth mounting hole (521) is provided on the second fastener (52); the first mounting hole (511) matches with the second mounting hole (411); the fourth mounting hole (521) matches with the third mounting hole (421); the third connecting member sequentially passes through the first mounting hole (511), the second mounting hole (411), the first mounting groove (1041), the third mounting hole (421), and the fourth mounting hole (521) to install the sealing module unit (101) in a gap between the cable and a structure through which the cable passes.

Images