CN216121769U

CN216121769U - Cable sealing joint and cable sealing connecting device

Info

Publication number: CN216121769U
Application number: CN202122309787.8U
Authority: CN
Inventors: 凌威
Original assignee: Qingdao Finyuan Innovation Technology Co ltd
Current assignee: Qingdao Finyuan Innovation Technology Co ltd
Priority date: 2021-09-22
Filing date: 2021-09-22
Publication date: 2022-03-22
Anticipated expiration: 2031-09-22

Abstract

The utility model belongs to the technical field of cable connection and discloses a cable sealing joint and a cable sealing device. The cable sealing joint comprises an elastic sealing sleeve, a locking seat, a plug base and a plug; the elastic sealing sleeve is sleeved on the periphery of the cable in an extruding manner, the outer diameter of the elastic sealing sleeve is gradually increased from two ends to the middle, and a first extruding part and a second extruding part are respectively formed; the locking seat and the plug base are oppositely sleeved on the elastic sealing sleeve, the locking seat is in threaded connection with the plug base, the inner wall of the locking seat is pressed against the first extrusion part, and the inner wall of the plug base is pressed against the second extrusion part; the plug is inserted in the inner hole of the plug base, and the plug is fixedly connected with the cable. The cable sealing joint and the cable sealing connecting device have the advantages of good sealing effect, convenience and rapidness in disassembly and replacement and low maintenance cost.

Description

Cable sealing joint and cable sealing connecting device

Technical Field

The utility model relates to the technical field of cable connection, in particular to a cable sealing joint and a cable sealing connection device.

Background

The underwater equipment is a main tool for ocean exploration and development, and has the characteristics of high manufacturing cost, high maintenance cost, severe use environment and easy damage. The general underwater equipment is composed of a plurality of parts, different parts are connected by adopting watertight cables, and the cables are connected by adopting watertight joints with better tightness. Meanwhile, the cable laid underwater is in a complex water quality environment for a long time in the using process, and is very easy to break/damage due to corrosion, pressure and the like so as to cause failure, so that the cable is required to be frequently checked, maintained or replaced, but the replacement mode is high in cost and long in period, and the cable is not required to be replaced in a large section under most failure conditions; although the maintenance mode is cost-saving, time-consuming and short, and is suitable for most fault situations, the sealing connection of the cables at the broken positions is always a great technical problem which troubles the repair mode. Due to the special requirements of the underwater environment, the waterproof, sealing and insulating requirements on the watertight joint at the fracture joint are very high, and if the connection and sealing treatment of the joint at the fracture joint are not good, the waterproof, insulating and sealing connection cannot be achieved to solve the fault, and the potential safety hazard can be brought to the operation of the whole cable engineering.

The existing underwater sealing joint generally adopts epoxy resin glue and other pouring sealant to seal and waterproof the cable joint or utilizes vulcanization treatment to seal the cable and the joint. When the pouring sealant is used for sealing, a sealing pipe is required to be installed at the joint to form a sealing cavity, the sealant is poured into the sealing cavity, and sealing can be formed after the sealant is cured. When the cable and the rubber joint are sealed by vulcanization treatment, rubber macromolecules in the cable and the rubber joint are subjected to chemical reaction with the cross-linking agent sulfur under heating by adopting vulcanization equipment, and the cable and the rubber joint are cross-linked to form a three-dimensional net structure, so that the cable and the joint are connected into a whole, and the sealing effect is realized. The two sealing modes have the defects of high cost, complex process, difficult operation and the like, particularly when the watertight connector fails, the connector needs to be completely detached for replacement, and glue pouring or vulcanization treatment is carried out again, so that the maintenance process is complex, the cost is high, and the watertight connector is not suitable for quick maintenance and replacement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a cable sealing joint and a cable sealing connecting device, which have the advantages of good sealing effect, convenience and quickness in disassembly and replacement and low maintenance cost.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a cable sealing joint comprises an elastic sealing sleeve, a locking seat, a plug base and a plug; the elastic sealing sleeve is arranged on the periphery of the cable in an extruding and sleeving manner, and the outer diameter of the elastic sealing sleeve is gradually increased from two ends to the middle to form a first extruding part and a second extruding part respectively; the locking seat and the plug base are oppositely sleeved on the elastic sealing sleeve, the locking seat is in threaded connection with the plug base, the inner wall of the locking seat is pressed against the first extrusion part, and the inner wall of the plug base is pressed against the second extrusion part; the plug is inserted into the inner hole of the plug base and fixedly connected with the cable.

Optionally, the inner wall of the elastic sealing sleeve is convexly provided with a plurality of annular bosses, and the diameter of each annular boss is smaller than that of the cable, so that the elastic sealing sleeve and the cable are in interference connection.

Optionally, the inner diameter of the elastic sealing sleeve is smaller than the outer diameter of the cable.

Optionally, one end of the plug base, which is close to the locking seat, is provided with a first external thread, the locking seat is provided with a first internal thread, and the first external thread is in fit connection with the first internal thread.

Optionally, one end of the plug base, which is far away from the locking seat, is provided with a connecting portion, and the connecting portion is used for connecting the plug base and another cable sealing joint.

The utility model provides a cable sealing connection device, includes two cable sealing joint as above arbitrary scheme, two cable sealing joint sealing connection, one of them cable sealing joint's plug is public plug, and another cable sealing joint's plug is female plug, and public plug and female plug are pegged graft the cooperation.

Optionally, two plug bases of two of the cable sealing joints are plugged in a sealing manner.

Optionally, the plug connector further comprises a locking cap, and the locking cap is sleeved on the peripheries of the two plug bases and used for locking the two plug bases.

Optionally, an outer wall of one of the two plug bases is provided with an annular protruding portion, an outer wall of the other plug base is provided with a second external thread, and an inner wall of the lock cap abuts against the annular protruding portion and is in threaded connection with the second external thread.

Optionally, the plug connector further comprises a first sealing element and a second sealing element, wherein the first sealing element is arranged between the end parts of the two plug bases, and the second sealing element is arranged between the side walls of the two plug bases.

Compared with the prior art, the utility model has the beneficial effects that:

according to the cable sealing joint provided by the utility model, the elastic sealing sleeve is sleeved on the periphery of the cable, the locking seat and the plug base are oppositely sleeved on the extrusion part of the elastic sealing sleeve, the locking seat and the plug base are fixed in a threaded connection mode, and the elastic sealing sleeve is pressed on the cable in a physical extrusion mode by utilizing the characteristics of large shape of the elastic part and good sealing performance after extrusion, so that the cable is sealed. Compared with the prior art, the cable sealing joint and the cable sealing connection device provided by the utility model have the advantages that the sealing of the cable is realized by extruding the elastic sealing sleeve, a vulcanization method or a glue filling and sealing method is not needed, the processing cost is reduced and the processing technology is simplified on the premise of no change of the sealing effect; and in the follow-up maintenance and replacement, the device has the advantages of convenient and fast disassembly and replacement, and reduces the maintenance cost.

Drawings

FIG. 1 is an exploded view of a cable sealing joint provided by an embodiment of the present invention;

FIG. 2 is a cross-sectional view of the elastomeric sealing boot of the cable gland provided in accordance with an embodiment of the present invention;

FIG. 3 is a cross-sectional view of a cable sealing device provided in accordance with an embodiment of the present invention;

FIG. 4 is an exploded view of a cable sealing device provided in accordance with an embodiment of the present invention;

figure 5 is an isometric view of a cable sealing device provided in accordance with an embodiment of the present invention.

In the figure:

100. a cable;

200. an elastic sealing sleeve; 211. a first pressing portion; 212. a second pressing portion; 221. an annular boss;

300. a locking seat; 310. the inner wall of the locking seat; 320. a first internal thread;

400. a plug base; 401. a first external thread; 410. a male plug base; 411. an annular boss; 412. a first groove; 413. a second groove; 420. a female plug base; 422. a second external thread;

500. a plug; 510. a male plug; 520. a female plug;

600. a lock cap; 610. a second internal thread;

710. a first seal member; 720. a second seal.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Preferred embodiments of the cable sealing joint and the cable sealing device according to the present invention will be described below with reference to the accompanying drawings. In the embodiment of the utility model, the cable sealing joint and the cable sealing device are applied to the sealing connection between cables of underwater equipment. The sealing device can also be applied to other occasions, such as sealing connection of underwater cables and underwater equipment, or sealing connection of cables in environments of moisture, dust and the like.

As shown in fig. 1, the cable sealing joint according to this embodiment includes an elastic sealing sleeve 200, a locking seat 300, a plug base 400 and a plug 500, wherein, in installation and use, the elastic sealing sleeve 200 is disposed on the outer circumference of the cable 100, and the outer diameter of the elastic sealing sleeve 200 gradually increases from the two ends to the middle to form a first extrusion portion 211 and a second extrusion portion 212, respectively. The locking seat 300 and the plug base 400 are oppositely sleeved on the elastic sealing sleeve 200, and the locking seat 300 is in threaded connection with the plug base 400. Specifically, one end of the plug base 400 close to the locking seat 300 is provided with a first external thread 401, the locking seat 300 is provided with a first internal thread 320, and the first external thread 401 and the first internal thread 320 are connected in a matching manner. The inner wall of the locking seat 300 abuts against the first pressing portion 211, and the inner wall of the plug base 400 abuts against the second pressing portion 212. The plug 500 is inserted into the inner hole of the plug base 400, and the plug 500 is fixedly connected with the cable 100. Optionally, the plug 500 is adapted to the plug base 400 to avoid a gap therebetween, so as to prevent the plug 500 from shaking in the inner hole of the plug base 400.

When the locking socket 300 and the plug base 400 are screwed and tightened, a pressing force is applied to the first pressing portion 211 and the second pressing portion 212, respectively, so as to press the elastic sealing boot 200 against the cable 100 to achieve sealing. Further, the first pressing portion 211 and the second pressing portion 212 of the elastic sealing boot 200 are respectively in interference connection with the inner wall of the locking seat 300 and the inner wall of the plug base 400, thereby providing a greater pressing force and enhancing the sealing effect. The cable sealing joint has the advantages of good sealing effect, simple structure and convenience in installation; and in the subsequent replacement, only the locking seat 300 and the plug base 400 need to be disassembled, and the elastic sealing sleeve 200 is replaced to complete the maintenance, so that the maintenance tool has the excellent effects of simple operation and low cost.

In this embodiment, the fixed connection between the plug 500 and the cable 100 refers to the soldering of the plug 500 and the cable 100. It is understood that the plug 500 and the joint of the cable 100 are subjected to a welding process so that the plug 500 is fixedly connected to the joint of the cable 100 to achieve the electrical connection of the plug 500 and the cable 100. The connection between the plug 500 and the cable 100 is more firm and stable by welding, and other connecting pieces are not needed, so that the cost is lower. Of course, in other embodiments of the present invention, the plug 500 and the connector of the cable 100 may be connected in other connection manners, which is not limited herein.

Further, in this embodiment, a connecting portion is further disposed on an end of the plug base 400 away from the locking base 300, and the connecting portion is used to fix the plug base 400 to another component, so as to connect the cable sealing joint to the other component. In particular, the other component here may be another cable gland, but also other equipment, such as underwater equipment, cable boxes, etc. Preferably, the connecting part is a screw thread, and may be an annular convex part as long as the connecting part can be quickly detached from another part. Further preferably, a sealing member is disposed at a connection position between the cable sealing joint and other components, so as to provide a better sealing effect.

Alternatively, referring to fig. 2, the elastic sealing sleeve 200 in this embodiment is a solid of revolution structure having a hollow cylindrical cavity therein. The outer diameter of the elastic sealing boot 200 is gradually increased from both ends to the middle to form a first pressing portion 211 and a second pressing portion 212, respectively. Further, the elastic sealing boot 200 sequentially includes an extension section, a first extrusion portion 211, a transition section and a second extrusion portion 212 from one end to the other end, the outer diameter of the extension section is equal and equal to the minimum outer diameter of the first extrusion portion 211, the outer diameter of the transition section is equal and equal to the maximum outer diameter of the first extrusion portion 211, and the outer diameter of the transition section is greater than the maximum outer diameter of the second extrusion portion 212, so that a limit step is formed between the transition section and the second extrusion portion 212 to limit the screwing-in depth of the plug base 400. The transition section enables the locking seat 300 and the plug base 400 to have larger margin when being screwed in a threaded connection way, and larger screwing force can be applied; the extended section provides a larger contact area between the elastic sealing sleeve 200 and the cable 100, thereby providing a better sealing effect.

As a preferred embodiment, a plurality of annular bosses 221 are protruded at intervals on the inner wall of the elastic sealing sleeve 200 in this embodiment, and the diameter of the annular bosses 221 is smaller than that of the cable 100, so that the elastic sealing sleeve 200 and the cable 100 are in interference connection, and the friction force between the elastic sealing sleeve 200 and the cable 100 can be increased while providing a larger extrusion force and enhancing the sealing effect, and the elastic sealing sleeve 200 and the cable 100 are prevented from slipping. Optionally, the annular bosses 221 are distributed at equal intervals, so that the distribution of the extrusion force and the friction force is more uniform, and the sealing performance of the elastic sealing sleeve 200 is better. The specific number of the annular bosses 221 can be selected according to actual needs, and in the present embodiment, the number of the annular bosses 221 is three. In another alternative embodiment, the inner diameter of the elastic sealing sleeve 200 is equal everywhere and smaller than the outer diameter of the cable 100, so as to realize the interference connection between the elastic sealing sleeve 200 and the cable 100, and the pressing force of the elastic sealing sleeve 200 tightly holding the cable 100 is larger, and the sealing effect is better.

Further, the elastic sealing sleeve 200 is made of butyl rubber, which has good chemical stability and thermal stability, excellent air tightness, water tightness and mechanical properties, heat resistance, ozone resistance, aging resistance, chemical resistance, shock absorption, electrical insulation properties and good resistance to acid and alkali, so that the elastic sealing sleeve 200 can be exposed to a complex underwater environment for a long time and provides an excellent sealing effect.

The specific structure of the cable sealing connection device according to the embodiment of the present invention will be described below with reference to fig. 3 to 5.

Referring to fig. 3, an embodiment of the present invention further provides a cable sealing connection device, which includes two cable sealing joints as described above, where the two connected cable sealing joints are connected in a sealing manner. Preferably, two plug bases 400 of two cable gland fittings are sealingly plugged, and two plugs 500 of two cable gland fittings are matingly plugged. Specifically, plug 500 and plug base 400 cooperation installation prevent that cable sealing joint from taking place to rock the time two plugs 500 within a definite time and producing not hard up, influence the connection effect. The cable sealing connection device is suitable for cable connection in underwater environment and other environments needing sealing, has good sealing effect and convenient installation, is easy to replace during maintenance, greatly reduces the installation and maintenance cost, and has good economic benefit.

Preferably, the cable sealing connection device further comprises a locking cap 600, the locking cap 600 is sleeved on the peripheries of the two connected plug bases 400 and used for locking the two plug bases 400, so that the cable sealing connection device is more stable in connection and more reliable in structure.

Further, referring to fig. 4, an outer wall of one of the two plug bases 400 is provided with an annular protrusion 411, an outer wall of the other plug base is provided with a second external thread 422, and an inner wall of the locking cap 600 abuts against the annular protrusion 411 and is in threaded connection with the second external thread 422. Preferably, the inner wall of the locking cap 600 is provided with a second internal thread 610 that mates with the second external thread 422. Furthermore, an axial limiting portion is disposed at an end of the locking cap 600 away from the second internal thread 610, and the axial limiting portion abuts against an end surface of the annular protrusion 411 when the second external thread 422 is screwed with the second internal thread 610, and locks the two plug bases 400 in the axial direction together with the second internal thread 610. The locking cap 600 arranged in this way enables the two cable sealing joints to be more conveniently detached, and the efficiency of installation and maintenance is improved.

Referring to fig. 4, the sealing connection between the two cable sealing joints is realized by the sealing connection between the two connected plug bases 400, two sealing members, i.e., a first sealing member 710 and a second sealing member 720, are disposed between the two connected plug bases 400, the first sealing member 710 is disposed between the end portions of the two plug bases 400 for sealing the end contact surfaces of the two plug bases 400, and the second sealing member 720 is disposed between the side walls of the two plug bases 400 for sealing the side wall contact surfaces of the two plug bases 400, so as to prevent the gap at the connection position from leaking water, and achieve better sealing effect. It is contemplated that the number of second seals 720 may be added between the sidewalls of the two plug bases 400 to improve the sealing effect.

Further, a first groove 412 is provided between the ends of the two plug bases 400 for mounting a first sealing member 710, and a second groove 413 is provided between the sidewalls of the two plug bases 400 for mounting a second sealing member 720. Specifically, a male plug base 410 provided with the annular protrusion 411, a female plug base 420 provided with the second external thread 422, a male plug 510 mounted in the male plug base 410, and a female plug 520 mounted in the female plug base 420. Preferably, a first groove 412 is provided on the end surface of the annular protrusion 411 close to the female plug base 420, and a second groove 413 is provided on the side wall of the portion of the male plug base 410 inserted into the female plug base 420. The first groove 412 and the second groove 413 respectively have a limiting effect on the first sealing element 710 and the second sealing element 720, and the sealing elements are prevented from sliding to influence the sealing effect.

Optionally, the first sealing element 710 and the second sealing element 720 are both elastic elements, preferably rubber sealing rings, it can be understood that the elastic elements are selected as the sealing elements, which can protect the locking cap 600, and in addition, the first sealing element 710 and the second sealing element 720 both have elastic acting force, so that the pressing effect is better, and the sealing performance is improved.

Referring to fig. 4 and 5, the assembly steps of the cable sealing connection device in the present embodiment specifically include: firstly, the elastic sealing sleeve 200 and the locking seat 300 are sleeved on the cable 100, then the joints of two sections of the cable 100 are welded on the male plug 510 and the female plug 520 respectively, then the locking cap 600 is sleeved on the male plug base 410, the male plug base 410 and the female plug base 420 are inserted into the corresponding locking seat 300 respectively and are screwed tightly to be locked, then the first sealing element 710 and the second sealing element 720 are installed in the first groove 412 and the second groove 413 respectively, finally the male plug 510 and the female plug 520 are inserted and installed, the male plug base 410 and the female plug base 420 are inserted and installed, and the locking cap 600 and the second external thread 422 are screwed tightly to be locked, so that the assembly of the cable sealing device in the embodiment can be completed.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A cable sealing joint is characterized by comprising an elastic sealing sleeve (200), a locking seat (300), a plug base (400) and a plug (500);

the elastic sealing sleeve (200) is sleeved on the periphery of the cable (100) in an extruding mode, the outer diameter of the elastic sealing sleeve (200) is gradually increased from two ends to the middle, and a first extruding portion (211) and a second extruding portion (212) are formed respectively;

the locking seat (300) and the plug base (400) are sleeved on the elastic sealing sleeve (200) in an opposite direction, the locking seat (300) is in threaded connection with the plug base (400), the inner wall of the locking seat (300) is pressed against the first extrusion part (211), and the inner wall of the plug base (400) is pressed against the second extrusion part (212);

the plug (500) is inserted into the inner hole of the plug base (400), and the plug (500) is fixedly connected with the cable (100).

2. Cable gland according to claim 1, characterized in that the inner wall of the elastomeric gland (200) is provided with a plurality of annular bosses (221) in relief, the diameter of said annular bosses (221) being smaller than the diameter of the cable (100) so as to allow an interference connection between the elastomeric gland (200) and the cable (100).

3. Cable sealing joint according to claim 1, characterized in that the inner diameter of the elastic sealing sleeve (200) is smaller than the outer diameter of the cable (100).

4. The cable gland according to claim 1, wherein an end of the plug base (400) close to the locking seat (300) is provided with a first external thread (401), the locking seat (300) is provided with a first internal thread (320), and the first external thread (401) and the first internal thread (320) are in fit connection.

5. The cable gland according to claim 1, characterized in that an end of the plug base (400) remote from the locking socket (300) is provided with a connecting portion for connecting the plug base (400) with another cable gland.

6. A sealed cable connection device, comprising two sealed cable joints according to any one of claims 1 to 5, wherein the sealed cable joints are connected in a sealed manner, the plug of one sealed cable joint is a male plug, the plug of the other sealed cable joint is a female plug, and the male plug and the female plug are in plug-in fit.

7. The cable gland connection according to claim 6, characterized in that the two plug feet (400) of the two cable gland fittings are sealingly plugged.

8. The cable sealing connection device according to claim 7, further comprising a locking cap (600), wherein the locking cap (600) is sleeved on the outer peripheries of the two plug bases (400) for locking the two plug bases (400).

9. The cable sealing connection device according to claim 8, wherein one of the two plug bases (400) is provided with an annular protrusion (411) at an outer wall thereof, and a second external thread (422) at an outer wall thereof, and the locking cap (600) has an inner wall abutting against the annular protrusion (411) at one end thereof and is threadedly coupled to the second external thread (422) at the other end thereof.

10. The cable sealing connection device according to claim 7, further comprising a first seal (710) and a second seal (720), the first seal (710) being provided between the ends of the two plug bases (400), the second seal (720) being provided between the side walls of the two plug bases (400).