A sensor sealing device and method resistant to LOCA environment

Abstract

The invention discloses a sensor sealing device and method resistant to LOCA environment, comprising an inner locking sleeve and an outer secondary sealing sleeve; the inner locking sleeve comprises a sealing flap wrapped around the cable joint position and a sealing rubber ring arranged at both ends of the sealing flap; the outer sides of both ends of the sealing flap are provided with a tapered inclined surface, and the end surface of the sealing rubber ring is provided with an outer auxiliary sealing section; the outer secondary sealing sleeve comprises a male sleeve and a female sleeve, the male sleeve and the female sleeve are screwed and docked, the male sleeve and the female sleeve are respectively provided with a tapered angle hole matched with the tapered inclined surface, when screwing and docking, the tapered inclined surface is squeezed to make the sealing flap radially contract to seal the cable; bosses are respectively provided on the tapered angle holes, and flat pads are respectively provided on the bosses, when screwing and docking, the outer auxiliary sealing section is squeezed by the flat pad, so that the outer auxiliary sealing section is deformed outwardly to seal with the inner wall of the male sleeve and the female sleeve, and deformed inwardly to seal with the outer wall of the cable. Ensure the stability of the cable joint position under high temperature and high pressure steam environment.

Description

Technical Field

[0001] The present invention relates to the technical field related to nuclear power equipment, and in particular to a sensor sealing device and method resistant to LOCA environment. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In the containment of a nuclear power plant, when a loss of coolant accident (LOCA) occurs in the reactor, the coolant pressure will drop rapidly, causing the high-pressure water to vaporize instantly, and the ambient temperature, pressure and humidity will rise, forming a high-temperature, high-pressure, hot and humid environment. Sensor equipment placed inside the containment usually needs to transmit signals to the outside of the containment through cables. The cable joint position is usually the weakest protection area. In a high-temperature and high-pressure steam environment, water vapor can easily enter the connection through the cable joint position, thereby affecting the stability of signal transmission. Traditional solutions usually use sealing materials to solidify and fill. This sealing method is a one-time sealing, which is not conducive to the subsequent cable maintenance after sealing. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a sensor sealing device and method that is resistant to LOCA environment. Through a double-layer sealing method of an inner locking sleeve and an outer secondary sealing sleeve, the cable joint position is protected to ensure the stability of the cable joint position in a high-temperature and high-pressure steam environment.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] In a first aspect, the present invention provides a sensor sealing device resistant to a LOCA environment, comprising: an inner locking sleeve and an outer secondary sealing sleeve;

[0007] The inner locking sleeve comprises a sealing flap covering the cable joint position and a sealing rubber ring arranged at both ends of the sealing flap; the outer sides of both ends of the sealing flap are provided with a tapered inclined surface, and the end surface of the sealing rubber ring is provided with an outer auxiliary sealing section;

[0008] The outer secondary sealing sleeve comprises a male sleeve and a female sleeve, one end of the male sleeve is screwed and connected with one end of the female sleeve, and the other end of the male sleeve and the other end of the female sleeve are respectively provided with a first cone angle hole and a second cone angle hole matched with the tapered inclined surface, so that when screwed and connected, the tapered inclined surface is squeezed to make the sealing petal radially contract to seal the cable;

[0009] The first tapered hole and the second tapered hole are respectively provided with a first boss and a second boss, and the first boss and the second boss are respectively provided with a first flat washer and a second flat washer, so that when tightening and docking, the first flat washer and the second flat washer can squeeze the outer auxiliary sealing section, so that the outer auxiliary sealing section can deform outwards to seal with the inner walls of the male sleeve and the female sleeve, and deform inwards to seal with the outer wall of the cable.

[0010] As an optional implementation, the sealing flap is a 120-degree fan-shaped structure, and the three sealing flaps are connected and wrapped around the cable joint position, and inter-flap sealing gaskets are provided on the sealing flaps.

[0011] As an optional implementation, the sealing flap is arranged on the outside of the sealing rubber ring, and the sealing flap is temporarily fixed by a first fastening ring, so that the sealing flap is locked by a fastener, and during the fastener locking process, the inter-flap sealing gasket between the contact surfaces of the sealing flap is compressed.

[0012] As an optional embodiment, the outer surface of the sealing flap is provided with a fastening ring placement groove for placing the first fastening ring, and the outer edge of the sealing flap is provided with a fastening hole for connecting with a fastener.

[0013] As an optional implementation, sealing grooves are provided on the inner sides of both ends of the sealing flaps, and a lip line meshing with the sealing grooves is provided on the outer circumferential surface of the sealing rubber ring.

[0014] As an optional embodiment, during the fastener locking process, the sealing groove presses the lip line, thereby achieving sealing between the inner locking sleeve and the first cable and the second cable.

[0015] As an optional embodiment, the length of the outer auxiliary sealing segment is greater than the sealing groove.

[0016] As an optional embodiment, one end of the male sleeve is provided with an external thread that is connected to the female sleeve, and the bottom end of the external thread is provided with a second fastening ring; one end of the female sleeve is provided with an internal thread that is connected to the male sleeve, and the end of the internal thread is provided with a sealing gasket; the second fastening ring is squeezed with the end face of the internal thread to form a seal; the sealing gasket is squeezed with the end face of the external thread to form a seal.

[0017] As an optional embodiment, the outer sides of the male sleeve and the female sleeve are both provided with a symmetrical first tool clamping surface and a second tool clamping surface for auxiliary locking.

[0018] In a second aspect, the present invention provides a LOCA environment resistant sensor sealing method, using the LOCA environment resistant sensor sealing device described in the first aspect, comprising:

[0019] A sealing flap is covered at the cable joint position, sealing rubber rings are arranged at both ends of the sealing flap, and the sealing flap is temporarily fixed by a first fastening ring, so as to lock the sealing flap by a fastener;

[0020] The male sleeve and the female sleeve are screwed together. When screwing together, the tapered surface of the sealing flap is squeezed through the first tapered hole at the other end of the male sleeve and the second tapered hole at the other end of the female sleeve, so that the sealing flap contracts radially to seal the cable;

[0021] When tightening the joint, the first flat washer located on the first boss at the end of the first tapered hole and the second flat washer located on the second boss at the end of the second tapered hole are driven to squeeze the outer auxiliary sealing section of the sealing rubber ring, so that the outer auxiliary sealing section deforms outward to seal with the inner walls of the male sleeve and the female sleeve, and deforms inward to seal with the outer wall of the cable.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention proposes a sensor sealing device and method resistant to LOCA environment, which realizes protection of the cable joint position through a double-layer sealing method of an inner locking sleeve and an outer secondary sealing sleeve, so as to ensure that water vapor cannot enter the cable joint position in a high-temperature and high-pressure steam environment, thereby improving the stability of the cable joint position and optimizing the problem that the traditional method is not conducive to maintenance.

[0024] The present invention proposes a sensor sealing device and method resistant to LOCA environment, a three-petal split structure and a sealing petal design with an inter-petal sealing gasket to achieve sealing protection for the cable joint position; and the outer end surface of the sealing petal is provided with a tapered inclined surface to facilitate secondary auxiliary sealing.

[0025] The present invention proposes a sensor sealing device and method resistant to LOCA environment. The outer secondary sealing method uses radial deformation generated by axial displacement to achieve secondary sealing protection, and the internal tapered hole assists in secondary reinforcement of the internal seal.

[0026] Advantages of additional aspects of the present invention will be given in part in the following description, and in part will become obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0028] Figure 1 A schematic diagram of a sensor sealing device resistant to LOCA environment provided in Example 1 of the present invention;

[0029] Figure 2 A schematic diagram of an inner locking sleeve provided in Example 1 of the present invention;

[0030] Figure 3A schematic diagram of the inner side of the sealing flap provided in Example 1 of the present invention;

[0031] Figure 4 A schematic diagram of the outer side of the sealing flap provided in Example 1 of the present invention;

[0032] Figure 5 A schematic diagram of a sealing rubber ring provided in Example 1 of the present invention;

[0033] Figure 6 A schematic diagram of an outer secondary sealing sleeve provided in Example 1 of the present invention;

[0034] Figure 7 A schematic diagram of a male sleeve provided in Example 1 of the present invention;

[0035] Figure 8 A schematic diagram of a female sleeve provided in Example 1 of the present invention;

[0036] Among them, 1. first cable, 2. inner locking sleeve, 3. outer secondary sealing sleeve, 4. second cable, 5. cable connector, 21. sealing flap, 22. first fastening ring, 23. fastener, 24. sealing rubber ring, 211. fastening ring placement groove, 212. fastening hole position, 213. tapered slope, 214. sealing groove, 215. inter-petal sealing gasket, 241. lip line, 242. outer auxiliary sealing section, 31. male sleeve, 32. female sleeve, 33. first flat gasket, 34. second flat gasket, 35. second fastening ring, 36. sealing gasket, 311. first boss, 312. first tool clamping surface, 313. external thread, 314. first cone angle hole, 321. internal thread, 322. second tool clamping surface, 323. second boss, 324. second cone angle hole. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0038] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that the terms "include" and "have" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] In the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0041] Example 1

[0042] like Figure 1 As shown, this embodiment provides a sensor sealing device resistant to LOCA environment, comprising: an inner locking sleeve 2 and an outer secondary sealing sleeve 3;

[0043] The inner locking sleeve 2 comprises a sealing flap 21 covering the cable joint 5 and a sealing rubber ring 24 provided at both ends of the sealing flap 21; the outer sides of both ends of the sealing flap 21 are provided with a tapered inclined surface 213, and the end surface of the sealing rubber ring 24 is provided with an outer auxiliary sealing section 242;

[0044] The outer secondary sealing sleeve 3 comprises a male sleeve 31 and a female sleeve 32. One end of the male sleeve 31 is screwed and docked with one end of the female sleeve 32. The other end of the male sleeve 31 and the other end of the female sleeve 32 are respectively provided with a first cone angle hole 314 and a second cone angle hole 324 which match the tapered inclined surface 213, so that when screwed and docked, the tapered inclined surface 213 is squeezed to make the sealing petal 21 radially contract to seal the cable.

[0045] The first tapered hole 314 and the second tapered hole 324 are respectively provided with a first boss 311 and a second boss 323, and the first boss 311 and the second boss 323 are respectively provided with a first flat washer 33 and a second flat washer 34, so that when tightening and docking, the first flat washer 33 and the second flat washer 34 can squeeze the outer auxiliary sealing section 242, so that the outer auxiliary sealing section 242 can be deformed outwardly to seal with the inner walls of the male sleeve 31 and the female sleeve 32, and deformed inwardly to seal with the outer wall of the cable.

[0046] The sensor sealing device is described in detail below.

[0047] like Figure 2 As shown, the inner locking sleeve 2 includes a sealing flap 21, a sealing rubber ring 24, a first fastening ring 22 and a fastener 23 for locking;

[0048] The sealing flap 21 is a 120-degree fan-shaped structure, and three sealing flaps 21 form an inner locking sleeve 2 covering the joint position of the first cable 1 and the second cable 4;

[0049] like Figure 3-4 As shown, the sealing flap 21 is provided with an inter-flap sealing gasket 215, which is used to improve the sealing performance when the sealing flap 21 is covered at the position of the cable joint 5;

[0050] The outer surface of the sealing flap 21 is provided with a fastening ring placement groove 211 for placing a first fastening ring 22, and the first fastening ring 22 is used to fix the sealing flap 21;

[0051] The outer edge of the sealing flap 21 is provided with a fastening hole 212, and the fastening hole 212 is used to connect with the fastener 23 to lock the sealing flap 21;

[0052] The inner sides of both ends of the sealing flap 21 are provided with sealing grooves 214 for enhancing sealing, and the sealing grooves 214 are used to connect with the sealing rubber ring 24;

[0053] The outer sides of both ends of the sealing flap 21 are also provided with tapered inclined surfaces 213 .

[0054] like Figure 5 As shown, the outer circumferential surface of the sealing rubber ring 24 is provided with a lip line 241 meshing with the sealing groove 214, and is used to connect with the sealing flap 21;

[0055] An outer auxiliary sealing section 242 whose length exceeds the sealing groove 214 is disposed on the end surface of the sealing rubber ring 24 .

[0056] In this embodiment, both ends of the sealing flap 21 are connected to the sealing rubber rings 24 through the engagement of the sealing groove 214 with the lip line 241 , and the distance between the two sealing rubber rings 24 is equal to the sealing grooves 214 on the inner sides of the two ends of the sealing flap 21 .

[0057] In this embodiment, three sealing petals 21 are clamped on the outside of the sealing rubber ring 24, and the sealing petals 21 are temporarily fixed by the first fastening ring 22 to facilitate the installation and locking of the fastener 23;

[0058] During the locking process of the fastener 23, the inter-petal sealing gaskets 215 on the contact surfaces of the three sealing petals 21 are compressed and simultaneously contracted in the radial direction, and the sealing groove 214 in the sealing petal 21 compresses the outer lip line 241 of the sealing rubber ring 24, thereby achieving the sealing between the inner locking sleeve 2 and the first cable 1 and the second cable 4, and playing the role of the first layer of protection of the cable joint 5.

[0059] like Figure 6-8 As shown, the outer secondary sealing sleeve 3 includes a male sleeve 31, a female sleeve 32, a first flat gasket 33 and a second flat gasket 34;

[0060] One end of the male sleeve 31 is provided with an external thread 313 that is connected to the female sleeve 32, and the bottom end of the external thread 313 is provided with a second fastening ring 35 to increase sealing performance;

[0061] The other end of the male sleeve 31 is provided with a first tapered hole 314 that matches the tapered slope 213 of the sealing flap 21 . A first boss 311 is provided at the end of the first tapered hole 314 . The first boss 311 is used to place the first flat washer 33 .

[0062] One end of the female sleeve 32 is provided with an internal thread 321 that is connected to the male sleeve 31, and the end of the internal thread 321 is provided with a sealing gasket 36 to increase the sealing performance;

[0063] A second tapered hole 324 matching the tapered slope 213 of the sealing flap 21 is provided inside the other end of the female sleeve 32 , and a second boss 323 is provided at the end of the second tapered hole 324 for placing the second flat pad 34 .

[0064] The outer sides of the male sleeve 31 and the female sleeve 32 are both provided with a symmetrical first tool clamping surface 312 and a second tool clamping surface 322 for auxiliary locking.

[0065] In this embodiment, before connecting the first cable 1 and the second cable 4, the male sleeve 31, the first flat washer 33, the second flat washer 34, the sealing rubber ring 24 and the female sleeve 32 are respectively inserted into both ends of the first cable 1 and the second cable 4;

[0066] The three sealing flaps 21 are clamped on the outside of the sealing rubber ring 24 by the sealing grooves 214 at both ends of the sealing flaps 21 and the engagement with the lip lines 241 of the sealing rubber ring 24. The three sealing flaps 21 are temporarily fixed using the first fastening ring 22 to facilitate the installation and locking of the fastener 23, thereby achieving the sealing between the inner locking sleeve 2 and the first cable 1 and the second cable 4, thereby playing the role of the first layer of protection for the cable joint 5.

[0067] The first flat washer 33 and the second flat washer 34 are respectively placed on the first boss 311 and the second boss 323, and the external thread 313 of the male sleeve 31 is screwed and connected with the internal thread 321 of the female sleeve 32. During the screwing process, the distance between the male sleeve 31 and the female sleeve 32 is reduced, which drives the first flat washer 33 and the second flat washer 34 of the first boss 311 and the second boss 323 at the ends of the first cone-angle hole 314 and the second cone-angle hole 324 to squeeze the outer auxiliary sealing section 242, so that the outer auxiliary sealing section 242 is radially deformed, deformed outwardly to seal with the inner walls of the male sleeve 31 and the female sleeve 32, and deformed inwardly to seal with the outer walls of the first cable 1 and the second cable 4;

[0068] At the same time, when the distance between the first cone angle hole 314 and the second cone angle hole 324 decreases, the tapered inclined surfaces 213 on the outer sides of the two ends of the sealing flap 21 are pushed, so that the sealing flap 21 is radially contracted again, further increasing the sealing performance between the sealing flap 21 and the first cable 1 and the second cable 4;

[0069] The second fastening ring 35 at the bottom of the external thread 313 of the male sleeve 31 is squeezed with the end face of the internal thread 321 of the female sleeve 32 to form a seal; the sealing gasket 36 at the root of the internal thread 321 of the female sleeve 32 is squeezed with the end face of the external thread 313 of the male sleeve 31 to form a second seal.

[0070] In this embodiment, the cable joint 5 is protected by a double-layer sealing method of an inner locking sleeve 2 and an outer secondary sealing sleeve 3 to ensure that water vapor cannot enter the cable joint 5 in a high-temperature and high-pressure steam environment, thereby protecting the stability of the cable joint 5.

[0071] Example 2

[0072] This embodiment provides a LOCA environment resistant sensor sealing method, using the LOCA environment resistant sensor sealing device described in Embodiment 1, including:

[0073] Insert the male sleeve 31, the first flat washer 33, the second flat washer 34, the sealing rubber ring 24 and the female sleeve 32 into both ends of the first cable 1 and the second cable 4 respectively;

[0074] The sealing flap 21 is covered at the position of the cable joint 5, and the sealing rubber rings 24 are arranged at both ends of the sealing flap 21; specifically, the three sealing flaps 21 are clamped on the outside of the sealing rubber ring 24 by the engagement of the sealing grooves 214 at both ends of the sealing flap 21 with the lip lines 241 of the sealing rubber ring 24;

[0075] The three sealing petals 21 are temporarily fixed using the first fastening ring 22 to facilitate the installation and locking of the fastener 23; thereby achieving the first layer of sealing between the inner locking sleeve 2 and the first cable 1 and the second cable 4;

[0076] The first flat washer 33 and the second flat washer 34 are respectively placed on the first boss 311 and the second boss 323, and the external thread 313 of the male sleeve 31 is screwed and connected with the internal thread 321 of the female sleeve 32; the second fastening ring 35 at the bottom of the external thread 313 of the male sleeve 31 is pressed against the end face of the internal thread 321 of the female sleeve 32 to form a seal, and the sealing gasket 36 at the root of the internal thread 321 of the female sleeve 32 is pressed against the end face of the external thread 313 of the male sleeve 31 to form a seal;

[0077] During the process of tightening and docking the male sleeve 31 and the female sleeve 32, the distance between the male sleeve 31 and the female sleeve 32 is reduced, driving the first flat gasket 33 and the second flat gasket 34 to squeeze the outer auxiliary sealing section 242, so that the outer auxiliary sealing section 242 undergoes radial deformation, deforms outward to seal with the inner walls of the male sleeve 31 and the female sleeve 32, and deforms inward to seal with the outer walls of the first cable 1 and the second cable 4;

[0078] At the same time, when the distance between the first cone angle hole 314 and the second cone angle hole 324 decreases, the cone angle inclined surface 213 is pushed to make the sealing flap 21 radially contract again, thereby further improving the sealing performance between the sealing flap 21 and the first cable 1 and the second cable 4 .

[0079] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A sensor sealing device resistant to LOCA environment, characterized in that: include: Inner locking sleeve and outer secondary sealing sleeve; The inner locking sleeve comprises a sealing flap covering the cable joint position and a sealing rubber ring arranged at both ends of the sealing flap; the outer sides of both ends of the sealing flap are provided with a tapered inclined surface, and the end surface of the sealing rubber ring is provided with an outer auxiliary sealing section; The sealing flap is a 120-degree fan-shaped structure. After the three sealing flaps are connected, they are wrapped around the cable joint position. The sealing flaps are provided with inter-petal sealing pads. The sealing flap is arranged outside the sealing rubber ring, and the sealing flap is temporarily fixed by a first fastening ring, so that the sealing flap is locked by a fastener, and during the fastening process of the fastener, the inter-flap sealing gasket between the contact surfaces of the sealing flap is compressed; The outer secondary sealing sleeve comprises a male sleeve and a female sleeve, one end of the male sleeve is screwed and connected with one end of the female sleeve, and the other end of the male sleeve and the other end of the female sleeve are respectively provided with a first cone angle hole and a second cone angle hole matched with the tapered inclined surface, so that when screwed and connected, the tapered inclined surface is squeezed to make the sealing petal radially contract to seal the cable; The first tapered hole and the second tapered hole are respectively provided with a first boss and a second boss, and the first boss and the second boss are respectively provided with a first flat washer and a second flat washer, so that when tightening and docking, the first flat washer and the second flat washer can squeeze the outer auxiliary sealing section, so that the outer auxiliary sealing section can deform outwards to seal with the inner walls of the male sleeve and the female sleeve, and deform inwards to seal with the outer wall of the cable.

2. A sensor sealing device resistant to LOCA environment as claimed in claim 1, characterized in that: The outer surface of the sealing flap is provided with a fastening ring placement groove for placing the first fastening ring, and the outer edge of the sealing flap is provided with a fastening hole for connecting with a fastener.

3. A sensor sealing device resistant to LOCA environment as claimed in claim 1, characterized in that: Sealing grooves are arranged on the inner sides of the two ends of the sealing flaps, and lip lines meshing with the sealing grooves are arranged on the outer circumferential surface of the sealing rubber ring.

4. A sensor sealing device resistant to LOCA environment as claimed in claim 3, characterized in that: During the fastener locking process, the sealing groove presses the lip line, thereby achieving sealing between the inner locking sleeve and the first cable and the second cable.

5. A sensor sealing device resistant to LOCA environment as claimed in claim 3, characterized in that: The length of the outer auxiliary sealing section is greater than the sealing groove.

6. A sensor sealing device resistant to LOCA environment as claimed in claim 1, characterized in that: One end of the male sleeve is provided with an external thread that is connected to the female sleeve, and the bottom end of the external thread is provided with a second fastening ring; one end of the female sleeve is provided with an internal thread that is connected to the male sleeve, and the end of the internal thread is provided with a sealing gasket; the second fastening ring is squeezed with the end face of the internal thread to form a seal; the sealing gasket is squeezed with the end face of the external thread to form a seal.

7. A sensor sealing device resistant to LOCA environment as claimed in claim 1, characterized in that: The outer sides of the male sleeve and the female sleeve are both provided with a symmetrical first tool clamping surface and a second tool clamping surface for auxiliary locking.

8. A sensor sealing method resistant to LOCA environment, characterized in that: The LOCA environment resistant sensor sealing device according to any one of claims 1 to 7 comprises: A sealing flap is wrapped at the cable joint position, sealing rubber rings are arranged at both ends of the sealing flap, and the sealing flap is temporarily fixed by a first fastening ring, so as to lock the sealing flap by a fastener; The male sleeve and the female sleeve are screwed together. When screwing together, the tapered surface of the sealing flap is squeezed through the first tapered hole at the other end of the male sleeve and the second tapered hole at the other end of the female sleeve, so that the sealing flap contracts radially to seal the cable; When tightening the joint, the first flat washer located on the first boss at the end of the first tapered hole and the second flat washer located on the second boss at the end of the second tapered hole are driven to squeeze the outer auxiliary sealing section of the sealing rubber ring, so that the outer auxiliary sealing section deforms outward to seal with the inner walls of the male sleeve and the female sleeve, and deforms inward to seal with the outer wall of the cable.

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