CN210167785U - Explosion-proof cable terminal connector - Google Patents
Explosion-proof cable terminal connector Download PDFInfo
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- CN210167785U CN210167785U CN201921255087.1U CN201921255087U CN210167785U CN 210167785 U CN210167785 U CN 210167785U CN 201921255087 U CN201921255087 U CN 201921255087U CN 210167785 U CN210167785 U CN 210167785U
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Abstract
The utility model discloses an explosion-proof cable terminal connector, which comprises a protective layer, wherein a cold shrinkage layer is arranged inside the protective layer, and a supporting layer is arranged inside the cold shrinkage layer; a cavity is arranged between the protective layer and the cold-shrink layer, and an explosion-proof layer is arranged in the cavity; sealing ring grooves are formed in the inner walls of the two ends of the cold-shrink layer along the circumferential direction, and cold-shrink sealing rings are arranged in the sealing ring grooves; a compression spring is arranged between the protective layer and the cold-shrink layer and corresponds to the sealing ring grooves at the two ends of the cold-shrink connecting pipe, one end of the compression spring is connected with the bottom of the sealing ring groove, and the other end of the compression spring is connected with the inner side of the protective layer; the utility model discloses have cable junction convenient, effectively prevent to connect into water, effectively avoid the beneficial effect that connects department deflagration.
Description
Technical Field
The utility model belongs to the technical field of cable joint, concretely relates to explosion-proof cable terminal connects.
Background
The cable intermediate head is one of the most common cable connection accessories in the work of cable repair and cable connection, and the cable is often arranged in the areas such as tunnels, underground, high altitude and the like, so the cable intermediate head is most easily affected by external moisture, and once the cable intermediate head enters water, the cable inside can be short-circuited, thereby causing huge economic loss. The cable intermediate joint is the most easily-occurring part for water inflow and leakage as the connection point between the cables, the traditional cable intermediate joint is generally only waterproof by winding a waterproof adhesive tape, and the waterproof sealing degree is limited. Meanwhile, the traditional cable intermediate joint can generate spontaneous combustion or explosion due to long-term operation or accidents, and can damage other cables in a cable trench or a cable bridge, so that the loss is immeasurable. Consequently, the problem of detonation takes place easily when waterproof degree is not enough, the cable short circuit to traditional cable intermediate head existence, the utility model discloses an explosion-proof cable terminal connects.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an explosion-proof cable terminal joint realizes that the cable swiftly connects, prevents effectively that outside moisture from getting into to connect inside, effectively avoids connecting the function of department deflagration simultaneously when the cable short circuit.
The utility model discloses a following technical scheme realizes:
an explosion-proof cable terminal connector comprises a protective layer, wherein a cold-shrink layer is arranged inside the protective layer, and a supporting layer is arranged inside the cold-shrink layer; a cavity is arranged between the protective layer and the cold-shrink layer, and an explosion-proof layer is arranged in the cavity; sealing ring grooves are formed in the inner walls of the two ends of the cold-shrink layer along the circumferential direction, and cold-shrink sealing rings are arranged in the sealing ring grooves; the sealing ring grooves corresponding to the two ends of the cold shrinkage layer between the protective layer and the cold shrinkage layer are provided with compression springs, one ends of the compression springs are connected with the groove bottoms of the sealing ring grooves, and the other ends of the compression springs are connected with the inner side of the protective layer.
The shrinkage layer is through the injection vulcanization shaping through silicon rubber in advance, passes through mechanical hole enlargement again, then supports at the inside lining supporting layer on shrinkage layer, and the supporting layer supports the plastic strip for the spiral that is the heliciform setting along the inner wall on shrinkage layer, and the spiral supports the plastic strip and struts the convenient inside that has inserted the shrinkage layer of power cable with the shrinkage layer. The outside on shrinkage layer is provided with the protective layer, and the both ends on shrinkage layer respectively with the both ends sealing connection of protective layer, and leave the cavity between shrinkage layer and the protective layer, be provided with the explosion-proof layer in the cavity, the explosion-proof layer is used for avoiding producing the spark and preventing the detonation when cold send the cover to be punctured by electric current. The inner walls at the two ends of the cold shrinkage layer are circumferentially provided with sealing ring grooves, the sealing ring grooves are provided with cold shrinkage sealing rings, and the cold shrinkage sealing rings are prepared from silicon rubber. The outer annular surface of the cold-shrink sealing ring is attached to the groove bottom of the sealing ring groove, and the inner annular surface of the cold-shrink sealing ring is attached to the outer wall of the supporting layer and is propped open by the supporting layer. Meanwhile, a compression spring is arranged between the protective layer and the cold shrinkage layer, namely, the two ends of the cavity are provided with compression springs corresponding to the bottoms of the sealing ring grooves, one ends of the compression springs are connected with the bottoms of the sealing ring grooves, the other ends of the compression springs are connected with the inner side of the protective layer, and the compression springs are in a compression state due to the support of the supporting layer at ordinary times. When carrying out cable junction, with the inside on cable cartridge entering cold-shrink layer, then get rid of the supporting layer from the inside on cold-shrink layer, the cold-shrink layer no longer receives the support and the shrink is with the cable cladding this moment. Simultaneously, the shrinkage sealing washer that sets up at the inner wall both ends of supporting layer loses the support of supporting layer, also contracts in step with the outer wall cladding of cable, seals the both ends on shrinkage layer. Simultaneously, the pressure spring who is in the contraction state originally loses the support of supporting layer, and it is tight with the tank bottom top of seal ring groove to extend to produce elasticity by the contraction state, and further the shrinkage sealing washer in the seal ring groove is tight towards the direction top of being close to the cable, makes the outside laminating of shrinkage sealing washer and cable inseparabler, further promotes sealed effect. The cold-shrinkage sealing ring and the compression spring effectively prevent external moisture from entering the cold-shrinkage layer, so that short circuit of the cable is effectively avoided; explosion is effectively avoided when the cable short circuit through explosion-proof layer.
For better realization the utility model discloses, furtherly, the both ends on explosion-proof layer are provided with insulating head, insulating head sets up between shrinkage layer and protective layer.
Be provided with insulating head between the both ends on shrinkage layer and the both ends of protective layer, constitute inclosed space between the insulating head at both ends and be used for setting up the explosion-proof layer, produce the spark when can avoiding the cable short circuit through insulating head, further promote the explosion-proof effect on explosion-proof layer.
In order to better realize the utility model, further, the protective layer comprises an inner protective layer and an outer protective layer, a cold shrinkage layer is arranged inside the inner protective layer, and an outer protective layer is arranged outside the inner protective layer; an explosion-proof box is arranged between the inner protective layer and the outer protective layer.
The both ends of the inner wall of inner protective layer respectively with the both ends sealing connection on shrinkage layer, the both ends of the outer wall of inner protective layer respectively with the both ends sealing connection of outer protective layer, and leave the cavity between inner protective layer and the outer protective layer, be provided with explosion-proof box in the cavity, explosion-proof box is in order to further avoid cable deflagration when explosion-proof layer inefficacy.
In order to better realize the utility model discloses, furtherly, explosion-proof box is nylon seal box or glass fiber seal box.
For better realization the utility model discloses, furtherly, be provided with the PVC layer on the inner wall on shrinkage layer, be provided with waterproof band layer on the outer wall on shrinkage layer.
In order to better realize the utility model discloses, furtherly, the shrinkage layer is obtained by fire-retardant type room temperature vulcanization foam silicone rubber preparation.
In order to better realize the utility model discloses, furtherly, the explosion-proof layer is epoxy glass steel layer.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
(1) the utility model discloses a set up the protective layer in the outside on shrinkage layer to set up the explosion-proof layer in the cavity between shrinkage layer and protective layer, take place deflagration when effectively avoiding the cable short circuit through the explosion-proof layer;
(2) the utility model discloses a set up the protective layer into inner protective layer and outer protective layer, set up the explosion-proof box in the cavity between inner protective layer and outer protective layer simultaneously, take place deflagration when further avoiding the cable short circuit through the combined action of explosion-proof box and explosion-proof layer;
(3) the utility model discloses a set up the seal ring groove at the both ends of the inner wall on shrinkage layer to set up the shrinkage sealing washer in the inside of seal ring groove, after inserting the cable and detach the supporting layer, the shrinkage sealing washer is from contracting to paste the outside of cable tightly, realizes effectively sealing to the inside on shrinkage layer, prevents that outside moisture from getting into the joint inside; meanwhile, a compression spring is arranged between the cold-shrinkage layer and the protective layer and corresponds to the groove bottom of the sealing ring groove, after the supporting layer is removed, the pressure generated by the compression spring pushes the groove bottom of the sealing ring groove tightly, the cold-shrinkage sealing ring is further compressed, and the sealing and waterproof effects are further ensured.
Drawings
Fig. 1 is a front sectional view of the present invention;
FIG. 2 is a schematic view of the present invention with the support layer removed;
FIG. 3 is a schematic view of the arrangement of the insulating head;
FIG. 4 is a schematic structural diagram of a passivation layer;
FIG. 5 is a schematic view of the arrangement of the PVC layer and the waterproof tape layer on the cold-shrink layer.
Wherein: 1-a protective layer; 2-a cold-shrink layer; 3-a support layer; 4-an explosion-proof layer; 5-sealing ring grooves; 6-cold-shrink sealing ring; 7-a compression spring; 8-insulating end sockets; 11-an inner protective layer; 12-an outer protective layer; 13-explosion-proof box; 01-a PVC layer; 02-waterproof tape layer.
Detailed Description
Example 1:
as shown in fig. 1 and 2, the explosion-proof cable terminal connector of the present embodiment includes a protective layer 1, a cold-shrink layer 2 is disposed inside the protective layer 1, and a support layer 3 is disposed inside the cold-shrink layer 2; a cavity is arranged between the protective layer 1 and the cold-shrink layer 2, and an explosion-proof layer 4 is arranged in the cavity; sealing ring grooves 5 are formed in the inner walls of the two ends of the cold-shrink layer 2 along the circumferential direction, and cold-shrink sealing rings 6 are arranged in the sealing ring grooves 5; sealing ring groove 5 corresponding to the two ends of cold shrinkage layer 2 between protective layer 1 and cold shrinkage layer 2 is provided with compression spring 7, compression spring 7's one end is connected with sealing ring groove 5's tank bottom, and compression spring 7's the other end is connected with protective layer 1's inboard.
The both ends of the inner wall on shrinkage layer 2 are provided with seal ring groove 5 along circumference, are provided with shrinkage sealing washer 6 in seal ring groove 5, and shrinkage sealing washer 6 is located between supporting layer 3 and shrinkage layer 2, and at ordinary times state, shrinkage sealing washer 6 receives the support of supporting layer 3 and also is in the expansion state. A compression spring 7 is arranged between the two ends of the cold shrinkage layer 2 and the two ends of the protection layer 1 and corresponds to the groove bottom of the sealing ring groove 5, one end of the compression spring 7 is connected with the groove bottom of the sealing ring groove 5, the other end of the compression spring 7 is connected with the inner wall of the protection layer 1, and the compression spring 7 is in a compression state under the supporting effect of the support layer 3. Stress cones are respectively arranged at two ends of the inner wall of the cold-shrink layer 2.
During the connecting cable, get into the through-hole that supporting layer 3 constitutes with cable cartridge inside, the cable is in the inside on shrinkage layer 2 promptly this moment, then gets rid of supporting layer 3 from the inside on shrinkage layer 2, and shrinkage layer 2 loses the outside cladding of shrink and with the cable after supporting layer 3's the support. Simultaneously, the setting also contracts in step after losing the support of supporting layer 3 with the outside cladding of cable at the inside cold-shrink sealing washer 6 of the seal ring groove 5 at the inner wall both ends on cold-shrink layer 2, effectively seals the both ends on cold-shrink layer 2, prevents that outside moisture from getting into the inside on cold-shrink layer 2 and arousing the cable short circuit. Simultaneously, the compression spring 7 that corresponds the tank bottom setting of sealed annular groove 5 loses the support back of supporting layer 3 and extends from the contraction state and produce elasticity and push up the tank bottom of sealed annular groove 5 tightly, and then push up tight cold-shrink sealing washer 6, makes the laminating of cold-shrink sealing washer 6 and the outside of cable inseparabler, further promotes sealed effect.
Example 2:
the embodiment is further optimized on the basis of embodiment 1, as shown in fig. 3, two ends of the explosion-proof layer 4 are provided with insulating end sockets 8, and the insulating end sockets 8 are arranged between the cold-shrink layer 2 and the protection layer 1.
The both ends of the cavity of reserving between the layer 1 are closed to the shrinkage layer 2 are provided with insulating head 8 respectively, and the outer wall on shrinkage layer 2, the inner wall of protective layer 3, the insulating head 8 at both ends have constituted an inclosed space jointly and have been used for setting up explosion-proof layer 4, and when the cable short circuit, insulating end cap 8 cooperation explosion-proof layer 4 prevents the electric spark jointly and splashes, takes place deflagration when further avoiding the cable short circuit.
Other parts of this embodiment are the same as embodiment 1, and thus are not described again.
Example 3:
the present embodiment is further optimized on the basis of the above embodiment 1 or 2, as shown in fig. 4, the protective layer 1 includes an inner protective layer 11 and an outer protective layer 12, the cold-shrink layer 2 is disposed inside the inner protective layer 11, and the outer protective layer 12 is disposed outside the inner protective layer 11; an explosion-proof box 13 is arranged between the inner protection layer 11 and the outer protection layer 12.
Two ends of the outer wall of the inner protection layer 11 are respectively connected with two ends of the inner wall of the outer protection layer 12 in a sealing manner, and two ends of the inner wall of the inner protection layer 11 are respectively connected with two ends of the outer wall of the cold shrinkage layer 2 in a sealing manner. The junction of inner protective layer 11 and outer protective layer 12 is the toper towards the cable slope, reserves the cavity simultaneously between inner protective layer 11 and outer protective layer 12 and is used for setting up explosion-proof box 13, when cable short circuit and explosion-proof layer 4 were punctured to lose efficacy, explosion-proof box 13 carried out the secondary explosion-proof, takes place the detonation when further avoiding the cable short circuit. Meanwhile, in order to avoid the influence of external current, the outer wall of the outer protective layer 12 is painted with conductive paint to form an outer shielding layer.
The rest of this embodiment is the same as embodiment 1 or 2, and therefore, the description thereof is omitted.
Example 4:
this embodiment is further optimized on the basis of any one of the above embodiments 1 to 3, and the explosion-proof box 13 is a nylon sealing box or a glass fiber sealing box.
The strong explosion-proof box 13 is set to be a nylon sealing box or a glass fiber sealing box, and when the cable is in short circuit, the nylon sealing box or the glass fiber sealing box can effectively prevent electric sparks from being generated, so that detonation of the cable is avoided. Meanwhile, a plurality of energy release holes are formed in the nylon sealing box or the glass fiber sealing box, so that explosion can be further avoided.
Other parts of this embodiment are the same as any of embodiments 1 to 3, and thus are not described again.
Example 5:
this embodiment is further optimized on the basis of any one of the above embodiments 1 to 4, as shown in fig. 5, a PVC layer 01 is disposed on the inner wall of the cold-shrink layer 2, and a waterproof tape layer 02 is disposed on the outer wall of the cold-shrink layer 2.
Other parts of this embodiment are the same as any of embodiments 1 to 4, and thus are not described again.
Example 6:
the embodiment is further optimized on the basis of any one of the embodiments 1 to 5, and the cold-shrink layer 2 is prepared from flame-retardant room-temperature vulcanized foamed silicone rubber.
The cold-shrinkage layer 2 is prepared by adopting the flame-retardant room-temperature vulcanized foam silicone rubber, and because the flame-retardant room-temperature vulcanized foam silicone rubber has the advantages of room-temperature cold shrinkage, no need of additional heating, excellent thermal stability, excellent insulating and heat-insulating properties and effective flame retardance.
Other parts of this embodiment are the same as any of embodiments 1 to 5, and thus are not described again.
Example 7:
this embodiment is further optimized on the basis of any one of embodiments 1 to 6, and the explosion-proof layer 4 is an epoxy glass fiber reinforced plastic layer.
The epoxy glass fiber reinforced plastic layer is a low-pressure molding material formed by compounding an epoxy resin composite material matrix, a reinforcing material fiber and a fabric thereof through an interface between the epoxy resin composite material matrix and the reinforcing material fiber, has excellent mechanical property, heat resistance, moisture resistance and corrosion resistance, and effectively avoids cable deflagration while bearing force stably.
Other parts of this embodiment are the same as any of embodiments 1 to 6, and thus are not described again.
The above is only the preferred embodiment of the present invention, not to the limitation of the present invention in any form, all the technical matters of the present invention all fall into the protection scope of the present invention to any simple modification and equivalent change of the above embodiments.
Claims (7)
1. The explosion-proof cable terminal connector is characterized by comprising a protective layer (1), wherein a cold-shrink layer (2) is arranged inside the protective layer (1), and a supporting layer (3) is arranged inside the cold-shrink layer (2); a cavity is arranged between the protective layer (1) and the cold-shrink layer (2), and an explosion-proof layer (4) is arranged in the cavity; sealing ring grooves (5) are formed in the inner walls of the two ends of the cold-shrink layer (2) along the circumferential direction, and cold-shrink sealing rings (6) are arranged in the sealing ring grooves (5); sealing ring groove (5) that correspond shrinkage layer (2) both ends between protective layer (1) and shrinkage layer (2) are provided with pressure spring (7), the one end of pressure spring (7) is connected with the tank bottom of sealing ring groove (5), and the other end and the inboard of protective layer (1) of pressure spring (7) are connected.
2. An explosion-proof cable termination joint as claimed in claim 1, characterized in that the explosion-proof layer (4) is provided at both ends with insulating end closures (8), the insulating end closures (8) being arranged between the cold-shrink layer (2) and the protective layer (1).
3. An explosion-proof cable termination joint according to claim 1 or 2, characterized in that the protective layer (1) comprises an inner protective layer (11) and an outer protective layer (12), the inner part of the inner protective layer (11) is provided with a cold shrink layer (2), and the outer part of the inner protective layer (11) is provided with the outer protective layer (12); an explosion-proof box (13) is arranged between the inner protection layer (11) and the outer protection layer (12).
4. An explosion proof cable termination joint according to claim 3, wherein the explosion proof box (13) is a nylon or glass fibre box seal.
5. An explosion-proof cable termination joint as claimed in claim 1, characterized in that the inner wall of the cold-shrink layer (2) is provided with a PVC layer (01) and the outer wall of the cold-shrink layer (2) is provided with a waterproof tape layer (02).
6. An explosion-proof cable termination according to claim 5, wherein the cold-shrink layer (2) is made of flame-retardant room temperature vulcanized foam silicone rubber.
7. An explosion proof cable termination joint according to claim 1, characterized in that the explosion proof layer (4) is a layer of epoxy glass fibre reinforced plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921255087.1U CN210167785U (en) | 2019-08-05 | 2019-08-05 | Explosion-proof cable terminal connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921255087.1U CN210167785U (en) | 2019-08-05 | 2019-08-05 | Explosion-proof cable terminal connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210167785U true CN210167785U (en) | 2020-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921255087.1U Active CN210167785U (en) | 2019-08-05 | 2019-08-05 | Explosion-proof cable terminal connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210167785U (en) |
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2019
- 2019-08-05 CN CN201921255087.1U patent/CN210167785U/en active Active
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