CN214069539U - Fireproof heat-insulation cable intermediate joint - Google Patents
Fireproof heat-insulation cable intermediate joint Download PDFInfo
- Publication number
- CN214069539U CN214069539U CN202120039443.7U CN202120039443U CN214069539U CN 214069539 U CN214069539 U CN 214069539U CN 202120039443 U CN202120039443 U CN 202120039443U CN 214069539 U CN214069539 U CN 214069539U
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- China
- Prior art keywords
- shell
- cavity
- heat
- silicon rubber
- cable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 26
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 22
- 239000000945 filler Substances 0.000 claims abstract description 14
- 239000003063 flame retardant Substances 0.000 claims abstract description 12
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000002265 prevention Effects 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims abstract description 8
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 2
- 230000032683 aging Effects 0.000 abstract description 3
- 230000006378 damage Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 18
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000000979 retarding effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a fire prevention thermal-insulated cable intermediate head. The fireproof heat-insulation cable intermediate head comprises a double-truncated-cone-shaped shell which is formed by an upper cavity and a lower cavity in a bolted connection mode, an explosion-proof ring is sleeved on the outer side of the shell, and a flame-retardant protective sleeve is sleeved on the outer side of the shell and the whole outer side of the explosion-proof ring. The cable is characterized in that a heat insulation layer is arranged on the inner side of the shell, a silicon rubber high-temperature resistant layer is arranged on the inner surface of the heat insulation layer, a filling agent is arranged between the silicon rubber high-temperature resistant layer and the cable, a through hole which is communicated with the inside and the outside is formed in the upper cavity or the lower cavity, and a silicon rubber energy-releasing sealing plug is arranged in the through hole. The utility model provides a fire prevention cable intermediate head has solved prior art's intermediate head because external force destruction, cable intake, external pressure or environment such as temperature are abominable or because of reasons such as ageing produce the technical problem that strikes sparks, short circuit blast even.
Description
Technical Field
The utility model relates to a cable maintenance field, concretely relates to thermal-insulated cable intermediate head of fire prevention.
Background
At present, electric power becomes a main power source of the current society, and with the development of the modernization process, a power transmission and supply system presents: the power supply network is huge, the power supply system is complex, the power supply links are many, the power supply distance is long, and the like. In the power supply network, the cable intermediate connector is used as an important connection point, and the operation stability of the cable intermediate connector directly influences the operation quality of a power supply system. The cable joint is influenced by construction environment and operation environment, and the electric arc, short circuit and even explosion are inevitably generated due to installation error, external force damage, cable water inflow or aging and the like. The cable joint can cause great economic loss and threaten life safety when in fire explosion, and even can cause secondary accidents.
SUMMERY OF THE UTILITY MODEL
For solving prior art's cable intermediate head because external force destruction, cable intake, environment such as external pressure or temperature are abominable or because of reasons such as ageing produce electric arc, short circuit technical problem that explodes even, the utility model provides a fire prevention cable intermediate head that insulates against heat.
The utility model provides a fire prevention cable intermediate head that insulates against heat, contains the casing, the casing is middle thick two round platform shapes of cavity that both ends taper down, the terminal surface central point at casing both ends puts and is equipped with logical line hole.
The casing outside cover is equipped with many annular explosion-proof rings, the casing with the holistic surface cover of explosion-proof ring is equipped with fire-retardant protective sheath.
The cable is characterized in that a heat insulation layer is arranged on the inner surface of the shell, a silicon rubber high-temperature resistant layer is arranged on the inner surface of the heat insulation layer, and a filling agent is arranged between the silicon rubber high-temperature resistant layer and the cable.
The shell is longitudinally divided into an upper cavity and a lower cavity which are consistent in structure along the central axis of the double-circular-truncated-cone-shaped structure, the heat insulation layer and the silicon rubber high-temperature resistant layer are also divided into an upper part and a lower part in the same mode, and the upper cavity and the lower cavity are fixedly connected through a plurality of bolts.
The upper cavity or the lower cavity is provided with a through hole which is communicated with the inside and the outside, and a silicon rubber energy-releasing sealing plug is arranged in the through hole.
Furthermore, a sealing rubber pad is arranged on the contact surface of the upper cavity and the lower cavity.
Furthermore, the upper cavity and the lower cavity are respectively provided with a semicircular sealing element at the inner wall of the through hole.
Furthermore, the shell is made of glass fiber reinforced plastic.
Further, the filler is a dry powder flame retardant filler.
Further, the heat insulation layer is made of ceramic fiber.
Compared with the prior art, the utility model provides a fire prevention thermal-insulated intermediate head passes through go up the cavity with the contact surface of cavity sets up down sealing rubber pad, and go up the cavity with lower cavity position in lead to the semi-circular sealing member that line downthehole wall position set up has promoted fire prevention thermal-insulated intermediate head's waterproof performance.
Through the heat-insulating layer, the silicone rubber high-temperature-resistant layer, the filling layer and the flame-retardant protective layer sleeved on the outer side of the shell, which are arranged on the inner surface of the shell, the fireproof and high-temperature-resistant performance of the fireproof and heat-insulating intermediate joint is improved.
The filling layer is convenient to fill through the through holes which are arranged in the upper cavity or the lower cavity and are communicated with the inside and the outside. The through hole is internally provided with a silicon rubber energy-releasing sealing plug which can release pressure in time when the temperature in the shell rises and even fire occurs so as to generate overhigh pressure. The explosion-proof rings are sleeved on the outer side of the shell and play an explosion-proof role when the shell explodes.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the external structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Please refer to fig. 1, which is a schematic structural diagram of the present invention, and fig. 2, which is a schematic external structural diagram of the present invention.
The utility model provides a fire prevention thermal-insulated cable intermediate head contains casing 1, casing 1 is middle thick both ends tapering's two round platform shape of cavity, the terminal surface central point at casing 1 both ends puts and is equipped with logical line hole 6. Casing 1 is the casing of glass steel material, promotes casing 1 is to the protective effect of various corrosive medium such as acid, alkali, salt, oil and can not take place the corrosion.
The inner surface of the shell 1 is provided with a heat insulation layer 13, and the heat insulation layer 13 is made of ceramic fibers. The inner surface of the heat insulation layer 13 is provided with a silicon rubber high temperature resistant layer 14, a filler 15 is arranged between the silicon rubber high temperature resistant layer 14 and the cable, and the filler 15 is a dry powder flame retardant filler. When electric arcs or sparks are generated at the connection position of the internal cable, the dry powder flame-retardant filler can timely play the roles of fire extinguishing and flame retarding.
The shell 1 is longitudinally divided into an upper cavity 11 and a lower cavity 12 which are consistent in structure along the central axis of the double-circular-truncated-cone shape, and the heat insulation layer 13 and the silicon rubber high-temperature resistant layer 14 are also divided into an upper part and a lower part in the same way. Go up cavity 11 with the contact surface of cavity 12 outwards extends respectively down and is equipped with fastening limit, every fastening edge is equipped with the aperture that 8 equidistance distribute, go up cavity 11 with down on the cavity 12 the aperture one-to-one sets up to pass through the aperture with the bolt will go up cavity 11 with cavity 12 fastening connection down.
The center position of the outer surface of the upper cavity 11 is provided with a through hole 2 which is communicated with the inside and the outside, and the through hole 2 is cylindrical. The through hole 2 is internally provided with a silicon rubber energy-releasing sealing plug 3, the silicon rubber energy-releasing sealing plug 3 is cylindrical, and the through hole 2 and the silicon rubber energy-releasing sealing plug 3 are in interference fit. In this embodiment, the filling agent 15 is poured into the interior of the housing 1 from the position of the through hole 2, and then the silicone rubber energy-releasing sealing plug 3 is installed, so that when the temperature inside the housing 1 rises and even fire breaks out, and thus excessive pressure is generated, the silicone rubber energy-releasing sealing plug 3 can be opened in time, and the pressure inside the housing 1 is released.
When go up cavity 11 with cavity 12 is closed through the bolt-up connection back down 1 outside cover of casing is equipped with two annular explosion-proof rings 4, two explosion-proof ring 4 overlaps respectively to be established through-hole 2 with the central point of 1 terminal surface of casing puts, casing 1 with the holistic surface cover of explosion-proof ring 4 is equipped with fire-retardant protective sheath 16.
It will be appreciated that two of the cables are passed through the two explosion proof rings 4 and the flame retardant protective sheath 16 before being connected, and the explosion proof rings 4 are placed on either side of the housing 1 to await subsequent installation.
And a sealing rubber pad is arranged on the contact surface of the upper cavity 11 and the lower cavity 12. When the upper cavity 11 and the lower cavity 12 are closed, the sealing rubber gasket improves the waterproof sealing performance of the intermediate joint of the fireproof heat-insulation cable.
And semicircular sealing pieces 5 are respectively arranged on the inner walls of the through hole 6 of the upper cavity 11 and the lower cavity 12. In this embodiment, after the upper cavity 11 and the lower cavity 12 are closed, the sealing member 5 forms two complete circular sealing structures, so that the waterproof effect of the casing 1 and the cable at the through hole 6 is greatly improved.
In specific implementation, two cables penetrate through the two explosion-proof rings 4 and the flame-retardant protective sleeve 16 and then are connected to form a cable connecting part. In this embodiment, the cable connection portion includes: conductor connecting pipe, shielding case, semiconductor strip, copper shielding net, thermal shrinkage sleeve, copper binding wire, soldering tin and other structures. It can be understood that: the upper cavity 11 and the lower cavity 12 are sleeved outside the cable connecting part after being butted, and the two explosion-proof rings 4 are respectively arranged on two sides of the shell 1 to wait for subsequent installation.
The sealing rubber pad is arranged on the contact surface of the upper cavity 11 and the lower cavity 12 during assembly, the semicircular sealing pieces 5 are respectively arranged inside the through hole 6 of the upper cavity 11 and the lower cavity 12, and the upper cavity 11 and the lower cavity 12 are fastened and connected through bolts through small holes arranged on the fastening edges. So that the waterproof performance and the sealing performance of the intermediate joint of the fireproof and heat-insulating cable are enhanced. Further, a waterproof sealing tape may be disposed at an end portion where the upper chamber 11 and the lower chamber 12 are assembled.
And filling a filler 15 from the position of the through hole 2, and installing the silicon rubber energy-releasing sealing plug 3 at the position of the through hole 2 after the filler 15 is filled in the shell 1. Then the explosion-proof ring 4 is sleeved on the outer side of the shell 1, and finally the flame-retardant protective sleeve 16 is sleeved on the outer surface of the shell 1 and the explosion-proof ring 4.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes made by the present specification can be changed, or directly or indirectly applied to other related technical fields, and all the same principles are included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a fire prevention cable intermediate head that insulates against heat, contains the casing, the casing is middle thick both ends tapering's two round platform of cavity shape, the terminal surface central point at casing both ends puts and is equipped with logical line hole, its characterized in that: a plurality of annular explosion-proof rings are sleeved on the outer side of the shell, and a flame-retardant protective sleeve is sleeved on the outer surface of the shell and the outer surface of the explosion-proof ring;
the inner surface of the shell is provided with a heat insulation layer, the inner surface of the heat insulation layer is provided with a silicon rubber high-temperature resistant layer, and a filling agent is arranged between the silicon rubber high-temperature resistant layer and the cable;
the shell is longitudinally divided into an upper cavity and a lower cavity which are consistent in structure along the central axis of the double-truncated cone shape, the heat insulation layer and the silicon rubber high-temperature resistant layer are also divided into an upper part and a lower part in the same mode, and the upper cavity and the lower cavity are fixedly connected through a plurality of bolts;
the upper cavity or the lower cavity is provided with a through hole which is communicated with the inside and the outside, and a silicon rubber energy-releasing sealing plug is arranged in the through hole.
2. The intermediate joint for a fireproof and heat-insulating cable according to claim 1, wherein: and a sealing rubber pad is arranged on the contact surface of the upper cavity and the lower cavity.
3. The intermediate joint for a fireproof and heat-insulating cable according to claim 1, wherein: and semicircular sealing pieces are respectively arranged on the inner walls of the through hole of the upper cavity and the lower cavity.
4. The intermediate joint for a fireproof and heat-insulating cable according to claim 1, wherein: the shell is made of glass fiber reinforced plastic.
5. The intermediate joint for a fireproof and heat-insulating cable according to claim 1, wherein: the filler is a dry powder flame retardant filler.
6. The intermediate joint for a fireproof and heat-insulating cable according to claim 1, wherein: the heat insulation layer is made of ceramic fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120039443.7U CN214069539U (en) | 2021-01-08 | 2021-01-08 | Fireproof heat-insulation cable intermediate joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120039443.7U CN214069539U (en) | 2021-01-08 | 2021-01-08 | Fireproof heat-insulation cable intermediate joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214069539U true CN214069539U (en) | 2021-08-27 |
Family
ID=77392350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120039443.7U Expired - Fee Related CN214069539U (en) | 2021-01-08 | 2021-01-08 | Fireproof heat-insulation cable intermediate joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214069539U (en) |
-
2021
- 2021-01-08 CN CN202120039443.7U patent/CN214069539U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210827 |