CN204578049U - The fire-retardant box of cable joint - Google Patents
The fire-retardant box of cable joint Download PDFInfo
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- CN204578049U CN204578049U CN201520198013.4U CN201520198013U CN204578049U CN 204578049 U CN204578049 U CN 204578049U CN 201520198013 U CN201520198013 U CN 201520198013U CN 204578049 U CN204578049 U CN 204578049U
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- fire
- dividing plate
- cable joint
- housing
- cable
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Abstract
The utility model is specifically related to the fire-retardant box of a kind of cable joint, comprise the housing of two tubulars, one end of housing is followed successively by necking section and fixed part, the other end is connector and is fixedly connected with another housing, also comprise the seal of hollow-core construction, described inner walls is fixedly connected with dividing plate, and dividing plate and housing form the space holding cable joint; Have the via hole of pyramidal structure in the middle part of described dividing plate, its large end is fixedly connected with dividing plate, and small end is away from necking section; The external stability of described fixed part is connected with end cap, and the inwall of fixed part is connected with gland; Through hole is provided with and between end cap and gland in the middle part of described seal; Sealing ring is connected with between two connectors.The utility model has the simple and advantage that sealing property is high of structure, practical.
Description
Technical field
The utility model is specifically related to the fire-retardant box of a kind of cable joint.
Background technology
In recent years, along with the quickening of China's Urbanization Construction process, electric utility is also in fast development.And power cable is with its power supply safety, reliable, runs the advantages such as simple, obtain and apply more and more widely.Because aerial cable etc. can affect urban, the condition restrictions such as frame pole erecting, steel tower are more, so cable is generally passed by cable tunnel.Along with under high voltage overhead lines, increasing cable is linked in cable tunnel or cable duct, causes the cable joint in cable tunnel or cable duct to get more and more.The insulation property at cable joint place are lower, are easy to make moist or media ages, cause cable breakdown, short circuit, and then initiation fire and blast.Due to current China cable tunnel limited amount, the number of cables in each cable tunnel is more, when after a cable blast on fire, will light other cables, causes subsequent explosion, causes cable tunnel inner cable damage.
In order to prevent cable joint place from rear initiation second accident on fire occurring, current cable joint place all adopts joint protection box.This joint protection box is two cylindric shells be fixedly connected with, and form the cavity holding cable joint after cylinder shell docking, cylinder shell is necking section away from one end of joint.But when joint protection box is installed, in order to make cable easily through necking section, the diameter of necking section is more much larger than cable size.But so just bring larger difficulty to the sealing of joint protection box.After the generation of cable joint place is on fire, because oxygen can enter in joint protection box from necking section, fire-retardant effect cannot be played, also can cause larger harm.
Utility model content
For the defect that above-mentioned prior art exists, technical problem to be solved in the utility model is to provide the simple and fire-retardant box of cable joint that sealing property is high of a kind of structure.
In order to solve the problems of the technologies described above, the utility model provides a kind of cable joint fire-retardant box, comprise the housing of two tubulars, one end of housing is followed successively by necking section and fixed part, the other end is connector and is fixedly connected with another housing, also comprise the seal of hollow-core construction, described inner walls is fixedly connected with dividing plate, dividing plate and housing form the space holding cable joint; Have the via hole of pyramidal structure in the middle part of described dividing plate, its large end is fixedly connected with dividing plate, and small end is away from necking section; The external stability of described fixed part is connected with end cap, and the inwall of fixed part is connected with gland; Through hole is provided with and between end cap and gland in the middle part of described seal; Sealing ring is connected with between two connectors.
The fire-retardant box of cable joint of said structure is adopted to have the following advantages: 1) because the external stability of fixed part is connected with end cap, the inwall of fixed part is fixedly connected with gland, seal is between end cap and gland, like this by the Bidirectional-squeezing of end cap and gland, seal is out of shape, thus fit tightly with cable, stop air to enter; 2) due to inner walls being fixedly connected with dividing plate, dividing plate and housing form the space holding cable joint, and when cable joint is on fire, dividing plate can intercept a large amount of heat, and then prevents seal temperature distortion and lose sealing function; 3) owing to having the via hole of pyramidal structure in the middle part of dividing plate, its large end is fixedly connected with dividing plate, and small end is away from necking section, and during use, cable end is easy to pass from via hole and do not destroy the end of cable.
Further improvement as the fire-retardant box of the above-mentioned cable joint of the utility model: also comprise fire proof heat-insulation layer, described fire proof heat-insulation layer covers on the inwall in the space that housing and dividing plate are formed.This fire proof heat-insulation layer can stop the diffusion on fire of cable joint place further.
Further improvement as the fire-retardant box of the above-mentioned cable joint of the utility model: the through-hole diameter of described seal is slightly larger than the outside diameter of cable.When seal is slightly out of shape, can fit tightly with the outer wall of cable, improve sealing effectiveness.
Further improvement as the fire-retardant box of the above-mentioned cable joint of the utility model: described seal is annular.Like this, in columniform space, more easily there is deformation.
Accompanying drawing explanation
Fig. 1 is the external structure schematic diagram of a kind of embodiment of the fire-retardant box of the utility model cable joint;
Fig. 2 is the internal structure schematic diagram of a kind of embodiment of the fire-retardant box of the utility model cable joint;
Fig. 3 is the enlarged drawing of A in Fig. 2.
In figure, 1 is end cap, and 2 is fixed part, and 3 is necking section, and 4 is housing, and 5 is bolt, 6 for connecting boss, and 7 is positive stop lug boss, and 8 is annular boss, and 9 is gland, and 10 is seal, and 11 for compressing boss, 13 is dividing plate, and 14 is via hole, and 15 is fire proof heat-insulation layer, and 16 is cable joint, and 17 is cable.
Embodiment
In order to better understand, the utility model is existing to be also illustrated by reference to the accompanying drawings according to specific embodiment:
A kind of embodiment of the fire-retardant box of the utility model cable joint, as shown in Figures 1 to 3, comprise the housing 4 of two tubulars, one end of housing 4 is followed successively by necking section 3 and fixed part 2, and the outer wall of the other end is integrally formed with and connects boss 6, connects on boss 6 and is connected with sealing ring.Multiple bolt 5 makes two housings 4 connect through connecting boss 6.The outer wall thread of fixed part 2 is connected with end cap 1, is provided with the compression boss 11 of integrative-structure in the middle part of this end cap 1, and the diameter of above-mentioned compression boss 11 is slightly less than the internal orifice diameter of fixed part 2.The inwall of fixed part 2 and be provided with positive stop lug boss 7 near necking section 3, the annular boss 8 on gland 9 offsets with positive stop lug boss 7, and annular boss 8 and gland 9 are structure as a whole.Seal 10, between end cap 1 and gland 9, is provided with the through hole slightly larger than cable 17 diameter in the middle part of seal 10.When end cap 1 constantly rotates, gradually by seal 10 crimp, thus can fit tightly with cable 17, stop air to enter.Annular boss 8 and positive stop lug boss 7 place of offseting are cambered surface, and when seal 10 is subject to frictional force rotation, because annular boss 8 and positive stop lug boss 7 are linear contact lay, contact area is little, easily follows seal 10 and rotates, and reduces the wearing and tearing of seal 10.Have the via hole 14 of the pyramidal structure of integrative-structure in the middle part of dividing plate 13, its large end is connected with dividing plate 13, and small end is away from necking section 3.During use, cable 17 end is easy to pass from via hole 14 and do not destroy the end of cable 17.Fire proof heat-insulation layer 15 covers on the inwall in the space that housing 4 is formed with dividing plate 13, prevents cable joint 16 place heat on fire from seal 10 is out of shape, and then affects sealing.
During use, cable 17 through after end cap 1, seal 10, gland 9, fixed part 2 and via hole 14, enters the cavity that dividing plate 13 is formed with housing 4 successively.After cable joint 16 connects, housing 4 is connected.Gland 9 is stuck in positive stop lug boss 7 place of fixed part 2, seal 10 is placed in fixed part 2 again, is finally connected with fixed part 2 spiral by gland 9.
In order to ensure that seal 10 more easily deformation occurs in columniform space, seal 10 is preferably loop configuration.
Above the technical scheme that the utility model embodiment provides is described in detail, apply specific case herein to set forth the principle of the utility model embodiment and execution mode, the explanation of above embodiment is only applicable to the principle helping to understand the utility model embodiment; Meanwhile, for one of ordinary skill in the art, according to the utility model embodiment, embodiment and range of application all will change, and in sum, this description should not be construed as restriction of the present utility model.
Claims (4)
1. the fire-retardant box of cable joint, comprise the housing of two tubulars, one end of housing is followed successively by necking section and retainer ring, the other end is connector and is fixedly connected with another housing, it is characterized in that: the seal also comprising hollow-core construction, described inner walls is fixedly connected with dividing plate, and dividing plate and housing form the space holding cable joint; Be provided with the via hole of pyramidal structure after the docking of two dividing plates in the middle part of it, its large end is fixedly connected with dividing plate, and small end is away from necking section; The external stability of described necking section is connected with end cap, and the inwall of necking section is fixedly connected with gland; Through hole is provided with and between end cap and gland in the middle part of described seal; Sealing ring is connected with between two connectors.
2. the fire-retardant box of cable joint according to claim 1, is characterized in that: also comprise fire proof heat-insulation layer, and described fire proof heat-insulation layer covers on the inwall in the space that housing and dividing plate are formed.
3. the fire-retardant box of cable joint according to claim 1, is characterized in that: the through-hole diameter of described seal is slightly larger than the outside diameter of cable.
4. the fire-retardant box of cable joint according to claim 3, is characterized in that: described seal is annular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520198013.4U CN204578049U (en) | 2015-04-03 | 2015-04-03 | The fire-retardant box of cable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520198013.4U CN204578049U (en) | 2015-04-03 | 2015-04-03 | The fire-retardant box of cable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204578049U true CN204578049U (en) | 2015-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520198013.4U Active CN204578049U (en) | 2015-04-03 | 2015-04-03 | The fire-retardant box of cable joint |
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| CN (1) | CN204578049U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800108A (en) * | 2017-11-13 | 2018-03-13 | 国网浙江省电力公司绍兴供电公司 | A kind of flexible cable joint explosion-proof box |
| CN110829694A (en) * | 2019-11-07 | 2020-02-21 | 衡阳韵翔电机有限公司 | Binding post of regulator wiring board for explosion-proof permanent magnet motor |
| CN111569322A (en) * | 2020-05-09 | 2020-08-25 | 徐占松 | Short-circuit-proof quick fire extinguishing device for high-altitude low-voltage transmission cable |
| CN113889963A (en) * | 2021-10-15 | 2022-01-04 | 重庆长信实业有限公司 | Flame-retardant structure of explosion-proof box |
-
2015
- 2015-04-03 CN CN201520198013.4U patent/CN204578049U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107800108A (en) * | 2017-11-13 | 2018-03-13 | 国网浙江省电力公司绍兴供电公司 | A kind of flexible cable joint explosion-proof box |
| CN110829694A (en) * | 2019-11-07 | 2020-02-21 | 衡阳韵翔电机有限公司 | Binding post of regulator wiring board for explosion-proof permanent magnet motor |
| CN111569322A (en) * | 2020-05-09 | 2020-08-25 | 徐占松 | Short-circuit-proof quick fire extinguishing device for high-altitude low-voltage transmission cable |
| CN113889963A (en) * | 2021-10-15 | 2022-01-04 | 重庆长信实业有限公司 | Flame-retardant structure of explosion-proof box |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |