CN111864685A - Cable joint fire-fighting system and implementation method - Google Patents
Cable joint fire-fighting system and implementation method Download PDFInfo
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- CN111864685A CN111864685A CN202010691162.XA CN202010691162A CN111864685A CN 111864685 A CN111864685 A CN 111864685A CN 202010691162 A CN202010691162 A CN 202010691162A CN 111864685 A CN111864685 A CN 111864685A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000010248 power generation Methods 0.000 claims abstract description 39
- 238000004880 explosion Methods 0.000 claims abstract description 37
- 238000013022 venting Methods 0.000 claims abstract description 22
- 230000005389 magnetism Effects 0.000 claims abstract description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 29
- 230000008569 process Effects 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 9
- 230000009467 reduction Effects 0.000 claims description 9
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 238000005422 blasting Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 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 description 3
- 229920000742 Cotton Polymers 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 239000003999 initiator Substances 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 230000001629 suppression Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims 1
- 230000002265 prevention Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007781 pre-processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
- A62C37/40—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone with electric connection between sensor and actuator
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/03—Cooling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/08—Distribution boxes; Connection or junction boxes
- H02G3/088—Dustproof, splashproof, drip-proof, waterproof, or flameproof casings or inlets
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to a cable joint fire-fighting system and an implementation method, wherein an explosion venting cavity is arranged outside an upper shell, and a plurality of vent holes are arranged on the surface of the explosion venting cavity; a waterproof breathable assembly is fixed along the periphery of an explosion venting cavity in the upper shell, a magnetic power generation element is fixed in the upper shell, and the magnetic power generation element is connected with the waterproof breathable assembly through a magnetic power generation starting rope; the cable with the connector is arranged in the lower shell, the fire extinguishing pipe support is arranged above the cable connector, the fire extinguishing pipe I and the fire extinguishing pipe II are fixed on the fire extinguishing pipe support, and the temperature detector I and the temperature detector II are arranged on the upper surface of the cable connector; go up the casing and fix with lower casing, magnetism power generation component is connected with extinguishing device I and extinguishing device II respectively, and extinguishing device I and extinguishing device II set up the top at cable joint protection box respectively. Before the cable joint takes place danger, send fire signal to measure of putting out a fire is implemented to the joint, the outside extinguishing device of protection box is linked simultaneously, the regional protection measure of putting out a fire near the cable box is implemented.
Description
Technical Field
The invention relates to a fire-fighting facility, in particular to a cable joint fire-fighting system and an implementation method thereof, which are used for effectively preventing and controlling fire of a cable joint and protecting the safety of the cable joint and a cable corridor.
Background
In recent years, the number of fire cases caused by electrical causes has increased year by year, among which cable joint failures, which are both multiple failures in cable tunnels and the culprit of a cable tunnel fire, are among many. The cable joint is broken down due to insulation reduction caused by the outside or self quality, the cable joint explodes to cause fire, the cable and equipment are burnt, power failure is caused, the repair time is long, production is delayed, disastrous direct and indirect economic loss is caused, and casualties are caused in serious cases.
The traditional cable joint protection box has the following problems in the using process:
1. most cable joint protection boxes are not provided with fire prevention and extinguishing measures.
2. The incomplete protection of the cable joint does not consider that other combustible substances nearby the cable joint are easily ignited once the cable joint is ignited and exploded.
3. The cable joint has no early warning and preprocessing functions, and can only wait for the occurrence of fire explosion of the cable joint to be reprocessed, so that the optimal processing time is missed.
The patent numbers are: CN208284984U, name: an explosion-proof box for a cable joint and a monitoring system thereof. The patent aim at provides a compromise explosion-proof box of cable joint of fire prevention explosion-proof performance and cable joint heat dissipation.
Set up at least one temperature sensing fire extinguishing element in explosion-proof box body, temperature sensing fire extinguishing element includes the shell body of being made by fusible material to and seal up the fire extinguishing agent in the shell body, the shell body of temperature sensing fire extinguishing element can break under the uniform temperature, and release the fire extinguishing agent of sealing up in the shell body to the box body in, thereby realize the function of putting out a fire.
The cable joint explosion-proof box also comprises an acquisition controller and at least two temperature sensing elements connected with the acquisition controller, and is used for monitoring the temperature of the cable joint and the temperature of the environment where the explosion-proof box body is located; the collection controller is used for collecting temperature data of the environment where the explosion-proof box body is located and temperature data of the cable joint, judging whether the difference value between the temperature of the environment where the explosion-proof box body is located and the temperature of the cable joint reaches a dangerous value or not, and if the difference value reaches the dangerous value, generating a temperature alarm signal so as to achieve the function of reminding workers.
The method has the defects that early warning and processing of cable joint faults cannot be realized because no early warning processing measures are provided in the method; the explosion chamber is not leaked in the patent, so that the explosion caused by the fault of the cable joint cannot be limited in the protection box; no fire extinguishing device outside the protection box in the patent can not prevent the fire spreading that triggers after the cable joint explosion is fired.
Disclosure of Invention
The invention provides a cable joint fire-fighting system and an implementation method aiming at the defects of the prior art, wherein the cable joint can send out an early warning signal before the cable joint is in danger, carry out cooling treatment on the joint, send out a fire signal once the cable joint is in danger of fire explosion, carry out fire extinguishing measures on the joint, and simultaneously link a fire extinguishing device outside a protection box to carry out fire extinguishing protection measures on the area near the cable box so as to carry out omnibearing protection on the cable joint.
The technical scheme adopted by the invention is as follows: the utility model provides a cable joint fire extinguishing systems, includes cable joint protection box, extinguishing device I, extinguishing device II, waterproof ventilative subassembly, goes out firetube I, goes out firetube II, temperature detector I, temperature detector II, magnetism power generation component, cable, the cable joint protection box comprises last casing and lower casing, its characterized in that: the device also comprises a fire extinguishing pipe bracket and a magnetic power generation starting rope;
a rectangular explosion venting cavity is arranged outside the upper shell and is communicated with the inside of the upper shell, and two rows of a plurality of exhaust holes are symmetrically arranged on the surface of the rectangular explosion venting cavity;
a waterproof ventilating component is fixed along the periphery of the explosion venting cavity in the upper shell, the rectangular explosion venting cavity is covered by the waterproof ventilating component, the magnetic power generation element is fixed in the upper shell, and the magnetic power generation element is connected with the waterproof ventilating component through a magnetic power generation starting rope;
The cable with the connector is arranged in the lower shell, the fire extinguishing pipe support is arranged above the cable connector, the fire extinguishing pipe I and the fire extinguishing pipe II are fixed on the fire extinguishing pipe support, the temperature detector I and the temperature detector II are respectively arranged below the fire extinguishing pipe I and the fire extinguishing pipe II, and the temperature detector I and the temperature detector II are respectively arranged on the upper surface of the cable connector;
the upper shell and the lower shell are fixed together, and a layer of flame-retardant waterproof cotton is coated between the two ends of the upper shell and the lower shell and the cable to prevent water from entering the cable joint protection box through the two ends of the shells;
the magnetic power generation element is connected with the fire extinguishing device I and the fire extinguishing device II through signal lines respectively, and the fire extinguishing device I and the fire extinguishing device II are arranged above the cable joint protection box respectively.
An implementation method of a cable joint fire-fighting system is characterized by comprising the following steps:
the cable joint generates overtemperature due to short circuit, the temperature detector I detects that the temperature of the cable joint exceeds the temperature of an action point set by the temperature detector I, namely, an early warning signal is sent to the control center to prompt the control center that the overtemperature phenomenon occurs at the cable joint, whether the fault occurs or not should be paid attention to in time, when the temperature of the cable joint exceeds the temperature of the starting point arranged on the fire extinguishing pipe I, the fire extinguishing pipe I explodes to implement temperature reduction and fire extinguishing, namely, after the temperature at the joint exceeds the starting temperature of the fire extinguishing pipe I, the gas fire extinguishing agent in the fire extinguishing pipe I expands, the fire extinguishing pipe explodes, the gas fire extinguishing agent is sprayed to the high-temperature position of the joint after being exploded, the liquid gas fire extinguishing agent is vaporized when meeting high temperature, the process is a heat absorption process, therefore, the temperature reduction effect can be achieved, meanwhile, the fire extinguishing agent extinguishes the fire at the joint, in the process, high-temperature gas in the cable joint protection box is exhausted from a plurality of exhaust holes of the explosion venting cavity through the waterproof breathable assembly;
If the temperature of the cable joint continues to rise, the temperature detector II detects that the temperature of the cable joint exceeds the action point temperature set by the temperature detector II, namely an early warning signal is sent to a control center to prompt that the position of the cable joint of the control center is failed, a worker can timely process the cable joint to prevent larger disasters, when the temperature of the cable joint exceeds the starting point temperature set by the fire extinguishing tube II, the fire extinguishing tube II is blasted to perform cooling and fire extinguishing, namely, after the temperature of the joint exceeds the starting temperature of the fire extinguishing tube II, a gas extinguishing agent in the fire extinguishing tube II is expanded and blasted, the gas extinguishing agent is sprayed to the high-temperature position of the joint after blasting, the liquid gas extinguishing agent is vaporized in high temperature, and the process is a heat absorption process, so that the temperature reducing effect can be achieved, and meanwhile, the;
when the early warning temperature reduction and fire extinguishing measures of the cable joint fail to prevent the cable joint from continuing overheating to cause explosion fire, after a large amount of gas is instantly generated, the waterproof breathable component is directly exploded, the gas generated by explosion is discharged through a plurality of exhaust holes of an explosion venting cavity, the waterproof breathable component is exploded and simultaneously starts the magnetic power generation element through the magnetic power generation starting rope, after the zipper is started, an iron core in the center of the magnetic power generation element is excited to generate displacement, magnetic lines of force around the magnetic power generation component are cut at the same time to generate current, the magnetic power generation element sends starting current signals to the fire extinguishing device I and the fire extinguishing device II through signal lines, after the fire extinguishing device I and the fire extinguishing device II receive the starting signals, the electric initiator acts to initiate gas production agent to combust to generate gas, when the pressure in the fire extinguishing device exceeds the pressure which can be borne by a nozzle diaphragm of the fire extinguishing device, the diaphragm explode, carrying out all-around fire extinguishing and suppression on the cable joint protection box and the peripheral area of the cable joint protection box;
After the fire extinguishing device I and the fire extinguishing device II act, a starting feedback signal is sent to the control center to inform the control center that the fire extinguishing device is started, and personnel in the control center are reminded to check the fire extinguishing device as soon as possible.
The invention has the beneficial effects that:
the temperature detector I detects that the temperature of the cable joint exceeds the normal working temperature, and then sends out an early warning signal to the control center, and meanwhile, the fire extinguishing pipe I is started to conduct cooling and fire extinguishing. After the temperature reduction and fire extinguishing are implemented, if the temperature of the cable continues to rise, the temperature detector II acts, and meanwhile, the fire extinguishing tube II acts to implement fire extinguishing.
The early warning cooling of cable joint, the measure of putting out a fire all fail to prevent cable joint continuation overheated initiation explosion fire, and waterproof ventilative subassembly directly explodes this moment, and magnetic power generation component action simultaneously links the outside extinguishing device I of cable joint protection box and the start of extinguishing device II, and two extinguishing devices are through the crisscross fire extinguishing agent that sprays of shower nozzle separately, implement omnidirectional to cable joint protection box and cable joint protection box peripheral region and put out a fire and restrain.
The invention realizes early warning through the temperature sensor and carries out cooling treatment through the fire extinguishing pipe.
The protection box is provided with an explosion venting cavity which can prevent the cable joint from exploding and igniting to spread out of the protection box.
The protection box outside is provided with 2 subtend injection's extinguishing device, can effectively prevent that the cable joint after the explosion is fired, spreads the protection box outside, can implement the protection of putting out a fire.
The invention can effectively prevent and extinguish the explosion fire of the cable joint through three-level alarming and feedback and three-level protection.
In a word, the system is provided with fire prevention and extinguishing measures to protect the cable joint in all directions, namely, the fire protection of the cable joint and the area around the cable joint is realized, and effective protection is provided for extinguishing the fire of the cable joint and the fire around the cable joint.
The system has early warning and preprocessing functions on the cable joint, early warning and specific fire extinguishing measures are provided, cooling, fire extinguishing and device starting are automatically started or mechanically started, a control circuit is not involved, reliability is high, and the system has practical and popularization values.
Description of the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view A-A of the structure of FIG. 1;
FIG. 3 is a top view of the upper housing of the present invention;
FIG. 4 is a flow chart illustrating the operation of the present invention.
Detailed Description
For a more clear understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings in which:
as shown in fig. 1 to 4, a cable joint fire fighting system comprises a cable joint protection box 1, a fire extinguishing device i 2, a fire extinguishing device ii 3, a waterproof ventilation assembly 4, a fire extinguishing pipe i 5, a fire extinguishing pipe ii 6, a temperature detector i 7, a temperature detector ii 8, a magnetic power generation element 9, a cable 13, a fire extinguishing pipe support 10 and a magnetic power generation starting rope 11.
The cable joint protection box 1 consists of an upper shell 1-1 and a lower shell 1-2, a rectangular explosion venting cavity 1-1-1 is arranged outside the upper shell 1-1, the rectangular explosion venting cavity 1-1-1 is communicated with the inside of the upper shell 1-1, and two rows of a plurality of exhaust holes 1-1-11 are symmetrically arranged on the surface of the rectangular explosion venting cavity 1-1-1;
a waterproof and breathable component 4 is fixed along the periphery of the explosion venting cavity 1-1-1 in the upper shell 1-1, the rectangular explosion venting cavity 1-1-1 is covered by the waterproof and breathable component 4, the magnetic power generation element 9 is fixed in the upper shell 1-1, and the magnetic power generation element 9 is connected with the waterproof and breathable component 4 through a magnetic power generation starting rope 11 by screws.
A cable 13 with a joint is arranged in the lower shell 1-2, a support 10 is arranged above the joint of the cable 13, a fire extinguishing pipe I5 and a fire extinguishing pipe II 6 are fixedly bound on the support 10, a temperature detector I7 and a temperature detector II 8 are arranged below the fire extinguishing pipe I5 and the fire extinguishing pipe II 6, the temperature detector I7 and the temperature detector II 8 are respectively stuck on the upper surface of the cable joint, and a fire extinguishing device I2, a fire extinguishing device II 3, a temperature detector I7 and a temperature detector II 8 are respectively connected with a control center;
fixing an upper shell 1-1 and a lower shell 1-2 together, and coating a layer of flame-retardant waterproof cotton 12 between the two ends of the upper shell 1-1 and the lower shell 1-2 and a cable 13 to prevent water from entering the cable joint protection box 1 through the two ends of the shells;
Magnetic power generation component 9 passes through the signal line and is connected with extinguishing device I2 and extinguishing device II 3 respectively, and extinguishing device I2 and extinguishing device II 3 set up respectively in the top of cable joint protection box 1.
An implementation method of a cable joint fire-fighting system comprises the following steps:
when the cable 13 joint is over-temperature due to short circuit, the temperature detector I7 detects that the temperature of the cable 13 joint exceeds the action point temperature set by the temperature detector I7, namely, an early warning signal is sent to the control center to prompt that the cable joint of the control center has over-temperature phenomenon, whether failure occurs or not should be paid attention to in time, when the temperature of the cable 13 joint exceeds the starting point temperature set by the fire extinguishing pipe I5, the fire extinguishing pipe I5 is blasted to perform cooling and fire extinguishing, namely, after the temperature of the joint exceeds the starting temperature of the fire extinguishing pipe I5, the gas extinguishing agent in the fire extinguishing pipe I5 is expanded, the fire extinguishing pipe is blasted, the gas extinguishing agent is sprayed to the high-temperature position of the joint after blasting, the liquid gas extinguishing agent is vaporized when encountering high temperature, the process is a heat absorption process, so that the cooling effect can be achieved, meanwhile, the fire extinguishing agent extinguishes fire at the joint, and in the process, the high-temperature gas in the cable joint protection -1-11 discharges;
If the temperature of the cable 13 joint continues to rise, the temperature detector II 8 detects that the temperature of the cable 13 joint exceeds the action point temperature set by the temperature detector II 8, namely, an early warning signal is sent to the control center to prompt that the cable joint position of the control center is failed, a worker can timely process the cable joint to prevent a larger disaster from happening, when the temperature of the cable 13 joint exceeds the starting point temperature set by the fire extinguishing tube II 6, the fire extinguishing tube II 6 is blasted to perform cooling and fire extinguishing, namely, after the temperature of the joint exceeds the starting temperature of the fire extinguishing tube II 6, a gas extinguishing agent in the fire extinguishing tube II 6 is expanded, the fire extinguishing tube is blasted, the gas extinguishing agent is sprayed to the high-temperature position of the joint after blasting, and the liquid gas extinguishing agent is vaporized when encountering high temperature, so that the process is a heat absorption process, the cooling effect can be;
when the early warning temperature reduction and fire extinguishing measures of the cable 13 joint fail to prevent the cable 13 joint from being overheated continuously to cause explosion fire, after a large amount of gas is generated instantly, the waterproof breathable component 4 is exploded directly, the gas generated by explosion is discharged through a plurality of exhaust holes 1-1-11 of an explosion venting cavity 1-1-1, when the waterproof breathable component 4 is exploded, the magnetic power generation starting rope 11 is used for starting the magnetic power generation element 9, after the zipper is started, an iron core in the center of the magnetic power generation element 9 is excited to generate displacement, and magnetic lines of force around the magnetic power generation component are cut to generate current, the magnetic power generation element 9 sends a starting current signal to the fire extinguishing device I2 and the fire extinguishing device II 3 through signal lines, after the fire extinguishing device I2 and the fire extinguishing device II 3 receive the starting signal, the electric initiator acts to initiate gas production agent to combust to generate gas, when the pressure in the fire extinguishing device exceeds the pressure which can be born by, the membrane is exploded, and extinguishing agents are sprayed in a crossed mode through spray heads to carry out all-around fire extinguishing and suppression on the cable joint protection box 1 and the peripheral area of the cable joint protection box 1;
After the fire extinguishing device I2 and the fire extinguishing device II 3 act, the starting feedback signal is sent to the control center to inform the fire extinguishing device that the fire extinguishing device is started, and personnel in the control center are reminded to check the fire extinguishing device as soon as possible.
The starting point of the fire extinguishing pipe I5 is 180-220 ℃;
the starting point of the fire extinguishing pipe II 6 is 260-300 ℃;
the action point of the temperature detector I7 is 180-220 ℃;
the action point of the temperature detector II 8 is 260-300 ℃.
The waterproof and breathable component 4 is BAE, the fire extinguishing tube I5 and the fire extinguishing tube II 6 are WZ-Q/T-300, the temperature detector I7 and the temperature detector II 8 are K-type thermocouples, and the magnetic power generation element 9 is MX-101.
Claims (2)
1. The utility model provides a cable joint fire extinguishing systems, includes cable joint protection box (1), extinguishing device I (2), extinguishing device II (3), waterproof ventilative subassembly (4), fire extinguishing pipe I (5), fire extinguishing pipe II (6), temperature detector I (7), temperature detector II (8), magnetism power generation component (9), cable (13), cable joint protection box (1) comprises last casing (1-1) and lower casing (1-2), its characterized in that: the device also comprises a fire extinguishing pipe bracket (10) and a magnetic power generation starting rope (11);
a rectangular explosion venting cavity (1-1-1) is arranged outside the upper shell (1-1), the rectangular explosion venting cavity (1-1-1) is communicated with the inside of the upper shell (1-1), and two rows of a plurality of exhaust holes (1-1-11) are symmetrically arranged on the surface of the rectangular explosion venting cavity (1-1-1);
A waterproof ventilating component (4) is fixed along the periphery of the explosion venting cavity (1-1-1) in the upper shell (1-1), the rectangular explosion venting cavity (1-1-1) is covered by the waterproof ventilating component (4), the magnetic power generation element (9) is fixed in the upper shell (1-1), and the magnetic power generation element (9) is connected with the waterproof ventilating component (4) through a magnetic power generation starting rope (11);
the cable (13) with the joint is arranged in the lower shell (1-2), the support (10) is arranged above the joint of the cable (13), the fire extinguishing pipe I (5) and the fire extinguishing pipe II (6) are fixed on the support (10), the temperature detector I (7) and the temperature detector II (8) are respectively arranged below the fire extinguishing pipe I (5) and the fire extinguishing pipe II (6), and the temperature detector I (7) and the temperature detector II (8) are respectively arranged on the upper surface of the cable joint;
the upper shell (1-1) and the lower shell (1-2) are fixed together, and a layer of flame-retardant waterproof cotton (12) is coated between the two ends of the upper shell (1-1) and the lower shell (1-2) and the cable (13) to prevent water from entering the cable joint protection box (1) through the two ends of the shells;
the magnetic power generation element (9) is respectively connected with the fire extinguishing device I (2) and the fire extinguishing device II (3) through signal lines, and the fire extinguishing device I (2) and the fire extinguishing device II (3) are respectively arranged above the cable joint protection box (1).
2. A method of implementing a fire fighting system using the cable joint of claim 1, characterized by the steps of:
the cable (13) joint is over-temperature due to short circuit, the temperature detector I (7) detects that the temperature of the cable (13) joint exceeds the temperature of an action point arranged by the temperature detector I (7), namely, an early warning signal is sent to a control center to prompt the control center that the cable joint has an over-temperature phenomenon, whether a fault occurs or not should be paid attention to in time, when the temperature of the cable (13) joint exceeds the temperature of a starting point arranged by the fire extinguishing tube I (5), the fire extinguishing tube I (5) is blasted to perform cooling and fire extinguishing, namely, after the temperature of the joint exceeds the starting temperature of the fire extinguishing tube I (5), a gas extinguishing agent in the fire extinguishing tube I (5) is expanded, the fire extinguishing tube is blasted, the gas extinguishing agent is sprayed to the high-temperature position of the joint after blasting, the liquid gas extinguishing agent is vaporized when meeting high temperature, the process is a heat absorption process, so that the, in the process, high-temperature gas in the cable joint protection box (1) is exhausted from a plurality of exhaust holes (1-1-11) of the explosion venting cavity (1-1-1) through the waterproof and breathable component (4);
If the temperature of the joint of the cable (13) continues to rise, the temperature detector II (8) detects that the temperature of the joint of the cable (13) exceeds the temperature of an action point set by the temperature detector II (8), namely, an early warning signal is sent to the control center to prompt the control center that the cable joint position has a fault, and the staff should process the fault in time to prevent larger disasters, when the temperature of the joint of the cable (13) exceeds the temperature of the starting point arranged on the fire extinguishing pipe II (6), the fire extinguishing pipe II (6) is blasted to implement temperature reduction and fire extinguishing, namely, after the temperature at the joint exceeds the starting temperature of the fire extinguishing pipe II (6), the gas fire extinguishing agent in the fire extinguishing pipe II (6) expands, the fire extinguishing pipe explodes, the gas fire extinguishing agent is sprayed to the high-temperature position of the joint after being exploded, the liquid gas fire extinguishing agent is vaporized when meeting high temperature, and the process is a heat absorption process, so that the temperature reduction effect can be achieved, and meanwhile, the fire extinguishing agent extinguishes fire at the joint;
when the cable (13) joint is not prevented from being overheated continuously to cause explosion fire by early warning temperature reduction and fire extinguishing measures of the cable (13) joint, after a large amount of gas is generated instantly, the waterproof breathable component (4) is exploded directly, the gas generated by explosion is discharged through a plurality of exhaust holes (1-1-11) of the explosion release cavity (1-1-1), the magnetic power generation element (9) is started through the magnetic power generation starting rope (11) when the waterproof breathable component (4) is exploded, after the zipper is started, an iron core at the center of the magnetic power generation element (9) is excited to generate displacement, magnetic lines of force around the magnetic power generation component are cut at the same time to generate current, and the magnetic power generation element (9) sends a starting current signal to the fire extinguishing device I (2) and the fire extinguishing device II (3) through a signal line,
After the fire extinguishing device I (2) and the fire extinguishing device II (3) receive starting signals, the electric initiator acts to initiate the gas production agent to combust to generate gas, when the pressure in the fire extinguishing device exceeds the pressure which can be borne by a nozzle diaphragm of the fire extinguishing device, the diaphragm explodes, and the fire extinguishing agent is sprayed by the spray heads in a cross mode to carry out all-around fire extinguishing and suppression on the cable joint protection box (1) and the peripheral area of the cable joint protection box (1);
after the fire extinguishing device I (2) and the fire extinguishing device II (3) act, a starting feedback signal is sent to the control center to inform the fire extinguishing device that the fire extinguishing device is started, and personnel in the control center are reminded to arrive at the scene for inspection as soon as possible.
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| CN113078607A (en) * | 2021-05-08 | 2021-07-06 | 国网湖南省电力有限公司 | Medium-voltage cable intermediate joint protection device for cable channel and application method thereof |
| CN113296032A (en) * | 2021-05-12 | 2021-08-24 | 广东新电电力科技有限公司 | Operation monitoring method and device for cable joint flexible explosion-proof device |
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| CN116991191A (en) * | 2023-09-28 | 2023-11-03 | 国网浙江省电力有限公司宁波供电公司 | Cable joint dust-free construction environment monitoring control system and method |
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| CN111864685B (en) | 2021-08-31 |
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