CN212518366U

CN212518366U - Novel cable joint explosion-proof box of fire extinguishing medium

Info

Publication number: CN212518366U
Application number: CN202021335511.6U
Authority: CN
Inventors: 金小友; 杨海光; 斯华君
Original assignee: Zhejiang Jinyue Electric Power Technology Co ltd
Current assignee: Zhejiang Jinyue Electric Power Technology Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-02-09
Anticipated expiration: 2030-07-09

Abstract

The utility model discloses a novel explosion-proof box of cable joint of medium of putting out a fire, through the fire extinguishing apparatus that can automatic trigger of inside setting, the cable joint to the emergence high temperature, on fire carries out rapid cooling and puts out a fire, in time prevents dangerous emergence and bigger economic loss. The key points of the technical scheme are as follows: the novel cable joint explosion-proof box for the fire extinguishing medium comprises a shell and a fire extinguishing device, wherein a cavity for placing the fire extinguishing device is formed by bulging the middle part of the shell, and first openings for allowing cables to pass through are reserved at two end parts of the shell; the fire extinguishing device comprises a fire extinguishing medium and a container for storing the fire extinguishing medium, the container is annular, a channel for the cable to pass through is formed in the middle of the container, the fire extinguishing medium is liquid at normal temperature, and the fire extinguishing medium is heated and vaporized.

Description

Novel cable joint explosion-proof box of fire extinguishing medium

Technical Field

The utility model relates to a cable correlation equipment field specifically is a novel fire extinguishing medium's explosion-proof box of cable joint.

Background

The cable is widely used for power and signal transmission in various industries and lives, the cable is made of one or more mutually insulated conductors and an outer insulation protective layer, the cable has the advantages of high transmission efficiency, small heat loss and high safety, long-distance power transmission usually needs a plurality of cables to be stranded and connected so as to achieve a sufficiently long transmission distance, however, the joint of the cable is usually the weakest and unstable part in the whole cable circuit, the lead at the joint of the cable has a section and needs to be exposed and connected by corresponding connectors, therefore, the cable joint can be short-circuited due to poor contact, damp, external force damage and other factors, the resistance is overlarge, eddy current is generated to generate heat and fire, and explosion can even occur in serious cases.

Therefore, the problem to be solved in the field of related equipment of cables is solved urgently by how to avoid the problem that the temperature of the cable joint is too high to cause fire, and timely cool and extinguish the fire after temperature rise and fire.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a novel explosion-proof box of cable joint of medium of putting out a fire, through the inside extinguishing device that can automatic trigger that sets up, to the cable joint that takes place the high temperature, on fire carrying out rapid cooling and put out a fire, in time prevent dangerous emergence and bigger economic loss.

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

the novel cable joint explosion-proof box for the fire extinguishing medium comprises a shell and a fire extinguishing device, wherein a cavity for placing the fire extinguishing device is formed by bulging the middle part of the shell, and first openings for allowing cables to pass through are reserved at two end parts of the shell; the fire extinguishing device comprises a fire extinguishing medium and a container for storing the fire extinguishing medium, the container is annular, a channel for the cable to pass through is formed in the middle of the container, the fire extinguishing medium is liquid at normal temperature, and the fire extinguishing medium is heated and vaporized.

Preferably, the fire extinguishing medium is perfluorohexanone.

Preferably, the container is made of a film material, and the thickness of the inner container wall of the container is smaller than that of the outer container wall.

Preferably, the fire extinguishing apparatus further comprises an inert gas bottle and a trigger mechanism, wherein high-pressure inert gas is stored in the inert gas bottle, the inert gas bottle is communicated with the container through a pipeline, an electromagnetic valve is arranged at the bottle mouth of the inert gas bottle, and the trigger mechanism is coupled with the electromagnetic valve.

Preferably, the triggering mechanism comprises a temperature sensor and a relay for detecting the temperature at the cable joint, wherein the temperature sensor is coupled with the relay, and the relay is coupled with the electromagnetic valve.

Preferably, the temperature sensor is provided with a temperature probe which is arranged in parallel with the cable, and the temperature probe enters the channel of the container and extends to the cable joint.

Preferably, the shell is provided with a visual window for observing the condition in the chamber, and the visual window is made of heat-resistant glass.

Preferably, the housing is openable from the middle, and the housing includes an upper housing and a lower housing, and the upper housing and the lower housing are detachably coupled.

Preferably, at least one second opening is arranged on the side wall of the shell, and a sealing cover is arranged on the second opening.

Preferably, a sealing ring gasket for waterproofing and fixing the cable line is provided inside the first opening.

Compared with the prior art, the novel cable joint explosion-proof box of the fire extinguishing medium adopting the technical scheme has the following beneficial effects:

one, adopt the utility model discloses a novel fire extinguishing medium's explosion-proof box of cable joint, its fire extinguishing medium adopt perfluor hexanone, are liquid under the normal temperature, easily preserve, can vaporize rapidly when being heated and produce a large amount of gases in order to cover the ignition point, cool down and put out a fire through the heat absorption, and put out a fire and accomplish the gaseous quick natural evaporation of back perfluor hexanone, do not have the harmful substance to remain.

Secondly, the cable joint explosion-proof box adopting the novel fire extinguishing medium has simple and easy realization of a way of triggering the perfluorohexanone to spray out for fire extinguishing, is favorable for improving the timeliness of temperature reduction and fire extinguishing, and can burst the container through the self-heating vaporization expansion of the perfluorohexanone; the electromagnetic valve can be triggered by the temperature sensor, so that high-pressure inert gas is flushed into the container, and the perfluorohexanone is pressurized to burst the container to extinguish fire.

Thirdly, because the container adopts film class material, and the thickness of the inboard container wall of container is less than the thickness of the outside container wall, when perfluor hexanone is heated vaporization inflation, the inboard container wall of container is at first propped open, in addition, when cable joint directly catches fire or takes place the detonation, can burn out the inboard container wall for perfluor hexanone directly sprays to cable joint department, is favorable to improving the speed that the cooling was put out a fire.

And fourthly, the visual window on the shell is used for observing the condition of the cable joint, so that the shell is ensured to be opened for maintenance or replacement under the condition of no danger, and the visual window adopts high borosilicate glass and has the excellent characteristics of high temperature resistance, high mechanical property, water resistance, corrosion resistance and the like.

And fifthly, the side wall of the shell is provided with a second opening, so that all parts inside the shell can be inspected and maintained under the condition that the shell is not opened, and the perfluorohexanone gas in the chamber after fire extinguishment can be discharged.

Sixthly, locate the sealing ring pad of first opening inner wall, sealing ring pad cover is on the outer wall of cable, not only can keep the cable stable, avoids the cable distortion of buckling, can also prevent that external moisture from getting into inside the casing, keeps cable joint's drying.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the cable joint explosion-proof box of the fire extinguishing medium of the present invention.

Fig. 2 is a schematic view of the internal structure of the upper housing in this embodiment.

Fig. 3 is a schematic structural view of the fire extinguishing apparatus according to the present embodiment.

Fig. 4 is a schematic cross-sectional view of the container in this embodiment.

Fig. 5 is a schematic structural diagram of the trigger mechanism in this embodiment.

Reference numerals: 1. a housing; 10. an upper housing; 101. a second opening; 102. a visible window; 11. a lower housing; 12. a first opening; 120. a sealing ring gasket; 13. a chamber; 2. a fire extinguishing device; 20. a fire extinguishing medium; 21. a container; 210. an outer container wall; 211. an inner container wall; 212. a channel; 22. an inert gas bottle; 23. an electromagnetic valve; 24. a temperature sensor; 240. a temperature measuring probe; 25. a relay; 3. and (3) a cable.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The novel cable joint explosion-proof box for the fire extinguishing medium shown in fig. 1 and 2 comprises a shell 1 and a fire extinguishing device 2, wherein a cavity 13 for placing the fire extinguishing device 2 is formed by bulging the middle part of the shell 1, the shell 1 comprises an upper shell 10 and a lower shell 11, the upper shell 10 and the lower shell 11 are detachably connected, and the shell 1 can be opened from the middle part.

A first opening 12 for the cable 3 to pass through is reserved at two end parts of the shell 1, a sealing ring gasket 120 for preventing water and fixing the cable 3 is arranged at the inner side of the first opening 12, the cable 3 passes through the sealing ring gasket 120 to enter the cavity 13, and a joint of the cable 3 is positioned in the middle of the cavity 13; two second openings 101 are arranged right above the upper shell 10, and sealing covers are arranged on the second openings 101; the side wall of the upper shell 10 is also provided with a visual window 102 for observing the fire extinguishing condition at the cable joint in the chamber 13, and the visual window 102 is made of high borosilicate glass with good heat resistance and high mechanical strength.

As shown in fig. 3 and 4, the fire extinguishing apparatus 2 includes a fire extinguishing medium 20 and a container 21 for storing the fire extinguishing medium 20, and the fire extinguishing medium 20 is perfluorohexanone which is liquid at normal temperature and rapidly vaporized by heat.

The container 21 is made of a film material (e.g., CPP film, PVC film) and has a ring shape, a passage 212 is formed in the middle of the container 21 for the cable 3 to pass through, and the inner container wall 211 (i.e., the wall of the container 21 on the side close to the passage 212) of the container 21 has a smaller thickness than the outer container wall 210 (i.e., the wall of the container 21 on the side away from the passage 212).

As shown in fig. 5, the fire extinguishing apparatus 2 further includes an inert gas bottle 22 and a trigger mechanism, wherein a high-pressure inert gas (such as nitrogen) is stored in the inert gas bottle 22, the inert gas bottle 22 is communicated with the container 21 through a pipeline, and an electromagnetic valve 23 is disposed at a bottle mouth of the inert gas bottle 22.

The trigger mechanism comprises a temperature sensor 24 and a relay 25 for detecting the temperature at the cable joint, wherein the temperature sensor 24 is coupled with the relay 25, and the relay 25 is coupled with the electromagnetic valve 23; the temperature sensor 24 is provided with a temperature probe 240, the temperature probe 240 is arranged in parallel with the cable 3, and the temperature probe 240 enters the channel 212 of the container 21 and extends to the cable joint.

The above is the preferred embodiment of the present invention, and a person skilled in the art can make several modifications and improvements without departing from the principle of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel explosion-proof box of cable joint of fire extinguishing medium which characterized in that: the fire extinguishing device comprises a shell (1) and a fire extinguishing device (2), wherein a cavity (13) for placing the fire extinguishing device (2) is formed in the middle of the shell (1) in a raised mode, and first openings (12) for allowing cables (3) to penetrate through are reserved at two ends of the shell (1); extinguishing device (2) is including extinguishing medium (20) and container (21) that are used for depositing extinguishing medium (20), container (21) are the annular, and container (21) middle part forms and is used for passageway (212) that cable conductor (3) passed, extinguishing medium (20) are liquid at ordinary temperature, and extinguishing medium (20) are heated and are vaporized.

2. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 1, characterized in that: the fire extinguishing medium (20) adopts perfluorohexanone.

3. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 1, characterized in that: the container (21) is made of a film material, and the thickness of the inner container wall (211) of the container (21) is smaller than that of the outer container wall (210).

4. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 1, characterized in that: the fire extinguishing device (2) further comprises an inert gas bottle (22) and a trigger mechanism, high-pressure inert gas is stored in the inert gas bottle (22), the inert gas bottle (22) is communicated with the container (21) through a pipeline, an electromagnetic valve (23) is arranged at the bottle mouth of the inert gas bottle (22), and the trigger mechanism is coupled with the electromagnetic valve (23).

5. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 4, characterized in that: the trigger mechanism comprises a temperature sensor (24) and a relay (25) for detecting the temperature at the cable joint, wherein the temperature sensor (24) is coupled with the relay (25), and the relay (25) is coupled with the electromagnetic valve (23).

6. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 5, characterized in that: the temperature sensor (24) is provided with a temperature probe (240), the temperature probe (240) is arranged in parallel with the cable (3), and the temperature probe (240) enters the channel (212) of the container (21) and extends to the cable joint.

7. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 1, characterized in that: the shell (1) is provided with a visual window (102) for observing the condition in the cavity (13), and the visual window (102) is made of heat-resistant glass.

8. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 1, characterized in that: the shell (1) can be opened from the middle, the shell (1) comprises an upper shell (10) and a lower shell (11), and the upper shell (10) and the lower shell (11) are detachably connected.

9. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 1, characterized in that: the side wall of the shell (1) is provided with at least one second opening (101), and the second opening (101) is provided with a sealing cover.

10. The novel fire extinguishing medium cable joint explosion-proof box as claimed in claim 1, characterized in that: and a sealing ring gasket (120) for preventing water and fixing the cable (3) is arranged on the inner side of the first opening (12).