CN202068015U - Cable fire-proof structure - Google Patents
Cable fire-proof structure Download PDFInfo
- Publication number
- CN202068015U CN202068015U CN2011201826171U CN201120182617U CN202068015U CN 202068015 U CN202068015 U CN 202068015U CN 2011201826171 U CN2011201826171 U CN 2011201826171U CN 201120182617 U CN201120182617 U CN 201120182617U CN 202068015 U CN202068015 U CN 202068015U
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- cable
- fire
- proof structure
- cables
- asbestos
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- Expired - Fee Related
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Abstract
The utility model discloses a fire-proof structure, particularly a cable fire-proof structure, which can automatically extinguish an on-fire cable. The cable fire-proof structure comprises cables and an intermediate joint for connecting the cables, and further comprises asbestos layers, wherein the asbestos layers are wrapped on the cables on two sides of the intermediate joint. Owing to the flame retardancy and flexibility of the asbestos layers, a space between the cables and air is eliminated, so as to play an extinguishing role on a naked fire; the cables on the two sides of the intermediate joint, which are shielded by the asbestos layers, can not transmit flame to each other, so that the self-rescuing capability is enhanced when the cables are on fire, and the fire can be automatically put out when personnel does not arrive; besides, the personnel is protected against insecurity factors; the asbestos layers are compact, can be simply manufactured, save investment, are easy to place, and do not influence the attractiveness of a tunnel, and the temperature can be conveniently measured; and a fire-proof slot box is further arranged on the intermediate joint to reduce further expansion of accidents.
Description
Technical field
The utility model relates to a kind of fire resistive construction, especially a kind of cable fire-proof structure.
Background technology
Power cable is widely used in industry and departments such as industry, civilian, enterprises and institutions.In plant area, city, residential area as main electric energy transmitting instrument.
Cable is in operation and cable easily takes place blows out, and arcing discharge etc. cause fire incident easily.Main because of cable running overload, overvoltage, operating ambient temperature is higher, ageing of insulation is serious, be subjected to the defective etc. in external force mechanical damage and the cable making work progress.These factors will speed up the defective deterioration of cable weak link, and they are to cause cable to blow out main cause on fire.Now and facility such as cable tunnel of building in early days, cable trough, cable testing bridge, because of being subjected to the restriction of factors such as space and economic cost, can not in construction, evade various risks, this is undoubtedly a kind of threat for the tinuous production of pursuing high reliability, and in case big fire incident takes place, also be quite huge to the economic loss of cable itself.
There is following problem in current fireproofing installation:
1, smoke alarm unit just after ignition of cable is smoldered, plays a kind of suggesting effect, and can not be actively, the fire extinguishing of active.And its rate of false alarm is also higher.
2, the temperature-sensitive warning device can play the effect of leading alarm, but can not self-extinguishing, and its stability of a system is not fine.
3, the cable tray that on cable mid head, adds, though when blowing out, cable can play a kind of protective effect to cable on every side, also but the naked light that can not suffocate.
4, the fire compartment wall of building in the cable tunnel can effectively stop fire spreading, but can only be about about 70 meters build one stifledly, also influence the rebuilding construction and the ventilation of cable too much, and invest relatively large.
5, set up water sprinkler system in the cable tunnel, can realize long-range fire extinguishing, but caliber lays complexity, and spray the time may not necessarily effectively aim at the fire area, in the tunnel, cause the situation of pipeline leakage water easily.The construction maintenance amount is big.
6, in the cable tunnel, use the fire extinguishing of nitrogen pipe network, too big to people's potential hazard.And the nitrogen in the tunnel also is difficult for draining only.
7, in the tunnel, hang the influence of fire extinguishing lantern and patrol and examine passage, also lack specific aim.
The utility model content
Technical problem to be solved in the utility model can self-extinguishing cable fire-proof structure after providing a kind of ignition of cable.
The cable fire-proof structure that its technical problem that solves the utility model adopts comprises the medial head of cable and stube cable also comprising asbestos layer that the cable of described medial head both sides is coated with asbestos layer.
Further be, the cable horizontal laying, the coated length of described asbestos layer on cable is 0.6-1 rice.
Further be, cable tilt lays, and the coated length of described asbestos layer on cable is 1-2 rice.
Further be that the thickness of asbestos layer is 8-10mm.
Further be, also comprise fire prevention groove box, described fire prevention groove box is arranged on the medial head.
Further be that fire prevention groove box is that two L shaped groove boxes are formed.
Further be, also comprise the asbestos quilt, described asbestos lagging covers on medial head, and is positioned in the fire prevention groove box.
The beneficial effects of the utility model are: utilize the anti-flammability and the pliability of asbestos layer, eliminate the interval of cable and air, thereby naked light is played smothering action.The cable of medial head both sides is all intercepted by asbestos layer, therefore can't transmit flame each other, and the self-saving ability when having strengthened the cable breaking out of fire under the situation that personnel fail to arrive, can be put out a fire automatically.And avoided personnel's unsafe factor.Asbestos layer is small and exquisite, and manufacture method is simple, and reduced investment is easy to place, and it is attractive in appearance not influence the tunnel, and thermometric is convenient.Fire prevention groove box can also be set on medial head, thereby strengthen the fire resistance property of medial head.
Description of drawings
Fig. 1 is a schematic diagram of the present utility model;
Fig. 2 is the figure that partly cuts open of the present utility model;
Parts, position and numbering among the figure: cable 1, asbestos layer 2, medial head 3, fire prevention groove box 4, asbestos are by 5.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model comprises the medial head 3 of cable 1 and stube cable 1, also comprises asbestos layer 2, and the cable 1 of described medial head 3 both sides is coated with asbestos layer 2.Asbestos layer 2 can be wrapping on the cable 1 when installing cable 1 or installing, the both sides of medial head 3 promptly are close to that section cable 1 of medial head 3.In case cable 1 catches fire, owing to separated by asbestos layer 2 between cable 1 and the cable 1, therefore can self-extinguishing.Asbestos layer 2 can coat all cables 1, also can only coat near one section cable 1 the medial head 3.Utilize the utility model to prevent fires, it makes simple, and is with low cost.
Concrete, cable 1 horizontal laying, the coated length of described asbestos layer 2 on cable 1 is 0.6-1 rice.Just in horizontal laying, coat the long asbestos layer of 0.6-1 rice 2 respectively to both sides cable 1 from medial head 3 beginnings.So both play the fireproof effect, also saved material and artificial.
As another kind of execution mode of the present utility model, cable 1 tilts to lay, and the coated length of described asbestos layer 2 on cable 1 is 1-2 rice.Just when the slope is laid, coat the long asbestos layer of 1-2 rice 2 respectively to both sides cable 1 from medial head 3 beginnings.So both can guarantee flameproof effect, needn't coat all cables 1 again, save material and artificial.
Concrete, the thickness of asbestos layer 2 is 8-10mm.So asbestos layer 2 pliabilitys of thickness are higher, are easier at coating time ratio, and can reach good flameproof effect.
In order to increase the fire protecting performance of medial head 3, as shown in Figure 2, also comprise fire prevention groove box 4, described fire prevention groove box 4 is arranged on the medial head 3.Fire prevention groove box 4 can adopt two L shaped groove boxes to piece together, and helps like this installing.Thereby effectively that medial head 3 and air is isolated, the fire protecting performance of enhancing medial head 3.Fire prevention groove box 4 has certain intensity, can reduce when blowing out closing on the injury of cable 1.
In order better to increase fire protecting performance, as shown in Figure 2, also comprise asbestos by 5, described asbestos are covered on the medial head 3 by 5, and are positioned in the fire prevention groove box 4.On medial head 3, covered asbestos by 5 after, can utilize fire prevention groove box 4 with asbestos by 5 with medial head 3 amalgamations interior, asbestos can be played the fire extinguishing effect automatically by 5 after cable 1 is blown out.
Claims (7)
1. cable fire-proof structure comprises the medial head (3) of cable (1) and stube cable (1), and it is characterized in that: also comprise asbestos layer (2), the cable (1) of described medial head (3) both sides is coated with asbestos layer (2).
2. cable fire-proof structure as claimed in claim 1 is characterized in that: described cable (1) horizontal laying, the coated length of described asbestos layer (2) on cable (1) is 0.6-1 rice.
3. cable fire-proof structure as claimed in claim 1 is characterized in that: described cable (1) tilts to lay, and the coated length of described asbestos layer (2) on cable (1) is 1-2 rice.
4. cable fire-proof structure as claimed in claim 1 is characterized in that: the thickness of described asbestos layer (2) is 8-10mm.
5. as the described cable fire-proof structure of the arbitrary claim of claim 1 to 4, it is characterized in that: also comprise fire prevention groove box (4), described fire prevention groove box (4) is arranged on the medial head (3).
6. cable fire-proof structure as claimed in claim 5 is characterized in that: described fire prevention groove box (4) is that two L shaped groove boxes are formed.
7. cable fire-proof structure as claimed in claim 5 is characterized in that: also comprise asbestos by (5), described asbestos are covered on the medial head (3) by (5), and are positioned in the fire prevention groove box (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201826171U CN202068015U (en) | 2011-06-01 | 2011-06-01 | Cable fire-proof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201826171U CN202068015U (en) | 2011-06-01 | 2011-06-01 | Cable fire-proof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202068015U true CN202068015U (en) | 2011-12-07 |
Family
ID=45061868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201826171U Expired - Fee Related CN202068015U (en) | 2011-06-01 | 2011-06-01 | Cable fire-proof structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202068015U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110870144A (en) * | 2017-06-01 | 2020-03-06 | R.施塔尔开关设备有限责任公司 | Explosion-proof plug connector |
-
2011
- 2011-06-01 CN CN2011201826171U patent/CN202068015U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110870144A (en) * | 2017-06-01 | 2020-03-06 | R.施塔尔开关设备有限责任公司 | Explosion-proof plug connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20140601 |