CN114129935A - Cable joint fire monitoring and automatic fire extinguishing system - Google Patents
Cable joint fire monitoring and automatic fire extinguishing system Download PDFInfo
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- CN114129935A CN114129935A CN202111478150.XA CN202111478150A CN114129935A CN 114129935 A CN114129935 A CN 114129935A CN 202111478150 A CN202111478150 A CN 202111478150A CN 114129935 A CN114129935 A CN 114129935A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 65
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000001704 evaporation Methods 0.000 claims description 52
- 230000008020 evaporation Effects 0.000 claims description 52
- 239000003795 chemical substances by application Substances 0.000 claims description 47
- 238000003860 storage Methods 0.000 claims description 35
- 239000000523 sample Substances 0.000 claims description 20
- 239000000779 smoke Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 13
- 239000003063 flame retardant Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 2
- 238000005253 cladding Methods 0.000 abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 51
- 239000000243 solution Substances 0.000 description 42
- 239000007789 gas Substances 0.000 description 27
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000011261 inert gas Substances 0.000 description 5
- 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 group 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 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000003892 spreading Methods 0.000 description 2
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- 238000013024 troubleshooting Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
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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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention provides a cable joint fire monitoring and automatic fire extinguishing system, which comprises: the fire extinguishing device comprises a cladding and a fire extinguishing device, wherein the cladding is used for hermetically wrapping a cable joint, the fire extinguishing device is communicated with the cladding through a fire extinguishing pipeline, a detection structure used for sensing fire is arranged in the cladding, the detection structure is in signal connection with the fire extinguishing device, and the fire extinguishing device collects sensing signals of the detection structure and transmits the sensing signals to a control unit and a monitoring terminal; realized putting out the cable fire at the source, real time monitoring, put out a fire in time to occupation space is little, puts out a fire as required to a plurality of cable joint through same extinguishing device, and the backstage control can foresee the conflagration emergence in advance, overhauls in advance and handles, avoids the conflagration to take place, guarantees electric power system safe and reliable operation.
Description
Technical Field
The invention relates to the technical field of power equipment fire engineering, in particular to a cable joint fire monitoring and automatic fire extinguishing system.
Background
With the rapid development of cities, the application range of cable tunnels is wider and wider, convenience is provided for people's life, but some problems exist, wherein the fire in the cable tunnel caused by explosion of cable joints is the most serious problem. The causes of fire in the cable tunnel can be divided into two categories: one is a fire caused by an external fire source, and the cable tunnel is closed and isolated from the outside. The other type is a fire accident caused by the fault of a cable body, wherein 70% of cable accidents are caused by the fault of a cable joint because the temperature of the cable joint in the long-term operation process is increased until the cable joint is overheated to burn through insulation due to the rough manufacturing process of the cable joint, poor manufacturing quality, loose compression joint, overlarge contact resistance, damp cable insulation or cable core and the like.
Therefore, in order to solve the above problems, there is a need for a device capable of automatically extinguishing a fire after a cable joint is ignited, cutting off a fire source from the source, and preventing the spread of fire.
In the conventional cable joint fire fighting device, the fire extinguishing device is arranged in each cable joint protective shell, so that the size is large, resources are wasted, and the conventional cable joint fire fighting device is not suitable for narrow cable channels; meanwhile, each cable joint fire-fighting device is independently finished, and cannot be centrally managed.
Disclosure of Invention
The invention aims to at least solve one of the technical problems that the fire source is required to be cut off at the source when the cable joint is easy to cause fire, the existing fire fighting device is large in size, wastes resources and is not suitable for narrow cable channels, and the centralized management cannot be carried out due to the independent completion of each cable joint fire fighting device in the prior art.
To this end, the invention provides, in a first aspect, a cable joint fire monitoring and automatic fire extinguishing system.
The invention provides a cable joint fire monitoring and automatic fire extinguishing system, which comprises: the fire extinguishing device comprises a cladding and a fire extinguishing device, wherein the cladding is hermetically wrapped on a cable joint, the fire extinguishing device is communicated with the cladding through a fire extinguishing pipeline, a detection structure used for sensing fire is arranged in the cladding, the detection structure is in signal connection with the fire extinguishing device, and the fire extinguishing device collects sensing signals of the detection structure and transmits the sensing signals to a control unit and a monitoring terminal.
The invention provides a cable joint fire monitoring and automatic fire extinguishing system, a cable penetrates through a cladding to enable the cable joint to be completely wrapped by the cladding, a closed space is formed in the cladding, a detection structure arranged in the cladding is used for sensing whether a fire disaster and the environment condition occur at the cable joint in the cladding, a signal is sent to a fire extinguishing device in a wireless transmission mode, the fire extinguishing device transmits the received signal to a monitoring terminal for real-time monitoring and display, and simultaneously transmits the signal to a control unit, the control unit controls the opening of the fire extinguishing device according to a set starting threshold value, after the fire extinguishing device is opened, a fire extinguishing medium is conveyed into the cladding through a fire extinguishing pipeline to extinguish the fire, the fire is cut off at the cable joint position, meanwhile, a background monitoring person can perform fault troubleshooting and maintenance in advance when the environment data at the cable joint position approaches the starting threshold value, and the occurrence of the fire is avoided, and the loss is reduced.
According to the technical scheme of the invention, the cable joint fire monitoring and automatic fire extinguishing system can also have the following additional technical characteristics:
in the technical scheme, a fire extinguishing valve is arranged between the cladding and the fire extinguishing system, and the control unit controls the opening and closing of the fire extinguishing valve according to the sensing signal of the detection structure.
In the technical scheme, the fire extinguishing valve is arranged on the fire extinguishing pipeline and used for realizing the opening and closing of the fire extinguishing device, the control unit opens the fire extinguishing valve after receiving a fire occurrence signal, the fire extinguishing valve is automatically controlled to be closed after receiving a fire extinguishing signal, and meanwhile, the fire extinguishing valve can also be manually opened and manually closed.
In the technical scheme, at least two of the cladding are communicated with the fire extinguishing device, and a fire extinguishing valve is arranged between any one of the cladding and the fire extinguishing device.
In the technical scheme, the outer cladding of the cable connectors is communicated with the same fire extinguishing device, the fire protection of the cable connectors can be realized only by one set of fire extinguishing device, each cladding corresponds to one fire extinguishing valve, the cable connectors are separately controlled, and fire extinguishing is only carried out in the cladding where fire occurs.
In any one of the above technical solutions, the fire extinguishing apparatus includes an evaporation furnace and a solution tank, the evaporation furnace is communicated with the inside of the cladding through a fire extinguishing pipe, liquid to be evaporated circulates between the evaporation furnace and the solution tank, and the evaporation furnace is used for converting the liquid to be evaporated from a liquid state to a gaseous state.
In the technical scheme, an evaporation furnace heats a solution to be evaporated in an electric heating mode, the solution to be evaporated can be pure water, carbon tetrachloride, a water solution with a lower boiling point and other low-boiling-point non-combustible liquid, preferably, the solution to be evaporated adopts water, the water in the evaporation furnace is evaporated into water vapor, a large amount of water vapor enters a cladding through a fire extinguishing pipeline, the water vapor has good insulating property under the gaseous state, and a fire disaster in the cladding is extinguished through the water vapor; meanwhile, the water amount in the evaporation furnace is kept stable, the solution tank supplies water to the evaporation furnace through a water outlet arranged between the solution tank and the evaporation furnace, after the solution in the evaporation furnace is evaporated, the water outlet is higher than the solution in the evaporation furnace so as to expose the water surface, when the water amount is reduced due to evaporation, water vapor enters the solution tank through the water outlet, so that the water in the solution tank is automatically supplied to the evaporation furnace through the water outlet, and the water vapor is continuously supplied to the cladding; the evaporation furnace is equipped with auto-power-off induction system, and when the solution tank in liquid was not enough, the auto-power-off induction system on the evaporation furnace sensed the temperature and exceeded 100 ℃ and will the auto-power-off, and the delivery port was closed after the outage, and water filling port and the gas outlet on locating the solution tank are opened, to the water injection in the solution tank.
Whether the evaporation capacity generated by the evaporation furnace in unit time meets the requirement or not can put out the fire in time, and the method is calculated in the following way:
the known heating power of the evaporation furnace includes:
Q＝ΔmcpΔT+ΔmL
the evaporation amount generated per unit time, i.e. the difference in mass of the solution before and after evaporation, is:
wherein: q is the power (W) of the evaporation furnace, Δ m is the evaporation rate (g/s) of the solution, Δ T is the temperature difference (K) between the storage temperature and the boiling point of the solution, cp is the heat capacity (J/(g.K)) of the solution, and L is the latent heat of phase change (J/g).
In the same way, the evaporation furnace with proper power can be selected according to the evaporation capacity requirement.
In the technical scheme, the bottom of the cladding is provided with an air inlet hole, the fire extinguishing pipeline is communicated with the cladding through the air inlet hole, and the bottom of the cladding is provided with an air outlet hole.
In the technical scheme, water vapor enters the cladding from the bottom of the cladding through the air inlet holes, the gas rises, combustible gas in the cladding is discharged through the air outlet holes, and meanwhile, the water vapor takes away the heat of a combustion object and is discharged through the air outlet holes.
In any one of the above technical schemes, the fire extinguishing apparatus comprises a fire extinguishing agent storage tank and a power device, the fire extinguishing agent storage tank is communicated with a cladding, the fire extinguishing valve is arranged between the fire extinguishing agent storage tank and the cladding, and the power device is communicated with the fire extinguishing agent storage tank and is used for driving the fire extinguishing agent in the fire extinguishing agent storage tank to enter the cladding.
According to the technical scheme, the dry powder extinguishing agent is stored in the extinguishing agent storage tank, the extinguishing valve is suitable for the cable fire-starting situation, the dry powder extinguishing agent in the extinguishing agent storage tank is controlled to enter the cladding, and after the extinguishing valve is opened, the power device drives the dry powder extinguishing agent to enter the extinguishing pipeline, so that the dry powder extinguishing agent enters the cladding.
In the technical scheme, the power device comprises a power gas cylinder, the power gas cylinder is communicated with the fire extinguishing agent storage tank through a power pipeline, and a power valve is arranged between the power gas cylinder and the fire extinguishing agent storage tank.
In the technical scheme, a power gas cylinder drives a fire extinguishing agent in a fire extinguishing agent storage tank to enter a fire extinguishing pipeline through gas, a power valve is connected with a control module and is closed in a normal state to ensure that the gas pressure in the cylinder does not leak, high-pressure inert gas is arranged in the power gas cylinder, the inert gas is such as heptafluoropropane, mixed gas of nitrogen, argon and carbon dioxide, carbon dioxide and the like, the inert gas is adopted to be stable in structure, secondary fire can not be caused, and the fire extinguishing pipeline is suitable for electrical fire; after the control module opens the fire extinguishing valve, the power valve is opened, and under the pushing of high-pressure gas, the fire extinguishing agent enters the cladding.
In any of the above technical solutions, the detection structure includes a temperature sensing probe and a smoke sensing probe.
In the technical scheme, the temperature sensing probe is used for detecting the temperature in the cladding, the smoke sensing probe is used for detecting the smoke amount in the cladding, the temperature and the smoke amount are transmitted to the monitoring terminal in real time, the fire disaster is judged to happen when the temperature or the smoke amount exceeds a certain range, and the control module opens each valve to complete fire suppression.
In any of the above technical solutions, the fire monitoring system further comprises an alarm device, wherein the alarm device is used for sending out an alarm signal and transmitting the alarm signal to the monitoring terminal when a fire disaster occurs.
In the technical scheme, the alarm device is connected with the fire extinguishing device, the alarm device sends out sound and light alarm after the fire extinguishing device is started, and meanwhile, the alarm signal is transmitted to the monitoring terminal to complete the emergency treatment of remote monitoring.
In any of the above solutions, the envelope is provided with a flame retardant structure.
In the technical scheme, the flame-retardant structure made of the flame-retardant material is used for isolating the contact between the fire in the cladding and the outside of the cladding, such as a fire-retardant metal net and the like, so that the fire spreading speed is reduced, the fire is extinguished in time, and the safety is ensured.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: the utility model provides a cable joint fire monitoring and automatic fire extinguishing system, realized putting out the cable fire at the source, real time monitoring, put out a fire in time to occupation space is little, puts out a fire as required to a plurality of cable joint through same extinguishing device, and the backstage control can foresee the conflagration emergence in advance, overhauls in advance and handles, avoids the conflagration to take place, guarantees electric power system safe and reliable operation.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a block diagram of a cable joint fire monitoring and automatic fire extinguishing system according to one embodiment of the present invention;
FIG. 2 is a flow diagram of a cable joint fire monitoring and automatic fire extinguishing system according to an embodiment of the present invention;
FIG. 3 is a control flow diagram of a cable joint fire monitoring and automatic fire extinguishing system according to an embodiment of the present invention;
FIG. 4 is a block diagram of a cable joint fire monitoring and automatic fire extinguishing system using water vapor as the extinguishing medium according to one embodiment of the present invention;
fig. 5 is a block diagram of an enclosure in a cable joint fire monitoring and automatic fire extinguishing system according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 3 is:
1. cladding; 2. a fire extinguishing device; 3. a fire extinguishing pipe; 4. a control unit; 5. a monitoring terminal; 6. a fire valve; 7. an alarm device;
11. detecting the structure; 12. a temperature sensing probe; 13. a smoke sensing probe; 14. an air inlet; 15. an air outlet;
21. a fire suppressant storage tank; 22. a power gas cylinder; 23. a power conduit; 24. a power valve; 25. an evaporation furnace; 26. a solution tank; 27. a water outlet; 251. an auto-power-off sensing device; 261. a water injection port; 262. and an air outlet.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced otherwise than as specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.
A cable joint fire monitoring and automatic fire extinguishing system according to some embodiments of the present invention is described below with reference to fig. 1 to 5.
Some embodiments of the present application provide a cable joint fire monitoring and automatic fire extinguishing system.
As shown in fig. 1 to 5, a first embodiment of the present invention provides a cable joint fire monitoring and automatic fire extinguishing system, including: the cable joint is wrapped in the sealing mode through the cladding 1 and the fire extinguishing device 2, the fire extinguishing device 2 is communicated with the cladding 1 through the fire extinguishing pipeline 3, a detection structure 11 used for sensing fire is arranged in the cladding 1, the detection structure 11 is in signal connection with the fire extinguishing device 2, and the fire extinguishing device 2 collects sensing signals of the detection structure 11 and transmits the sensing signals to the control unit 4 and the monitoring terminal 5.
The embodiment provides a cable joint fire monitoring and automatic fire extinguishing system, a cable passes through a cladding 1 to enable the cable joint to be completely wrapped by the cladding 1, a closed space is formed in the cladding 1, a detection structure 11 arranged in the cladding 1 is used for sensing whether a fire disaster and the environment condition happen at the cable joint in the cladding 1, a signal is sent to a fire extinguishing device 2 in a wireless transmission mode, the fire extinguishing device 2 transmits the received signal to a monitoring terminal 5 for real-time monitoring and display and simultaneously transmits the signal to a control unit 4, the control unit 4 controls the opening of the fire extinguishing device 2 according to a set starting threshold value, after the fire extinguishing device 2 is opened, a fire extinguishing medium is conveyed into the cladding 1 through a fire extinguishing pipeline 3 to extinguish the fire, the fire is cut off at the position of the cable joint, and meanwhile, a background monitoring person can stop the fire when the environment data at the position of the cable joint is close to the starting threshold value, troubleshooting and maintenance are carried out in advance, so that fire disasters are avoided, and loss is reduced.
The second embodiment of the present invention provides a cable joint fire monitoring and automatic fire extinguishing system, and on the basis of the first embodiment, as shown in fig. 1 to 3, a fire extinguishing valve 6 is arranged between the enclosure 1 and the fire extinguishing system, and the control unit 4 controls the opening and closing of the fire extinguishing valve 6 according to a sensing signal of the detecting structure 11.
In this embodiment, the fire extinguishing valve 6 is disposed on the fire extinguishing pipeline 3 for opening and closing the fire extinguishing apparatus 2, the control unit 4 opens the fire extinguishing valve 6 after receiving a fire occurrence signal, automatically controls to close the fire extinguishing valve 6 after receiving a fire extinguishing signal, and simultaneously, the fire extinguishing valve 6 can also be manually opened and manually closed.
The third embodiment of the invention provides a cable joint fire monitoring and automatic fire extinguishing system, and on the basis of any one of the above embodiments, as shown in fig. 1 to 3, at least two of the cladding 1 are communicated with a fire extinguishing device 2, and a fire extinguishing valve 6 is arranged between any one of the cladding 1 and the fire extinguishing device 2.
In the embodiment, the outer cladding 1 of the cable joints is communicated with the same fire extinguishing device 2, the fire extinguishing protection of the cable joints can be realized only by one set of fire extinguishing device 2, each cladding 1 corresponds to one fire extinguishing valve 6, the separation control of the cable joints is realized, and the fire is extinguished only in the cladding 1 with the fire.
The fourth embodiment of the invention provides a cable joint fire monitoring and automatic fire extinguishing system, and on the basis of any one of the above embodiments, as shown in fig. 4-5, the fire extinguishing device 2 comprises an evaporation furnace 25 and a solution tank 26, the evaporation furnace 25 is communicated with the interior of the cladding 1 through the fire extinguishing pipeline 3, liquid to be evaporated flows between the evaporation furnace 25 and the solution tank 26, and the evaporation furnace 25 is used for converting the liquid to be evaporated from a liquid state to a gaseous state.
In the embodiment, the evaporation furnace 25 heats the solution to be evaporated by an electric heating mode, the solution to be evaporated can be pure water, carbon tetrachloride, a water solution with a lower boiling point and other low-boiling-point incombustible liquid, preferably, the solution to be evaporated adopts water, the water in the evaporation furnace 25 is evaporated into water vapor, a large amount of water vapor enters the cladding 1 through the fire extinguishing pipeline 3, the water vapor has good insulation property under the gaseous condition, and a fire disaster in the cladding 1 is extinguished through the water vapor; meanwhile, the water amount in the evaporation furnace 25 is kept stable, the solution tank 26 replenishes the water amount to the evaporation furnace 25 through a water outlet 27 arranged between the evaporation furnace 25 and the solution tank, after the solution in the evaporation furnace 25 is evaporated, the water outlet 27 is higher than the solution in the evaporation furnace 25 so as to expose the water surface, when the water amount is reduced due to evaporation, water vapor enters the solution tank 26 through the water outlet 27, so that the water in the solution tank 26 automatically replenishes the water amount to the evaporation furnace 25 through the water outlet 27, and the water vapor is continuously replenished into the cladding 1; the evaporation furnace 25 is provided with an automatic power-off sensing device 251, when the liquid in the solution tank 26 is insufficient, the automatic power-off sensing device 251 on the evaporation furnace 25 senses that the temperature exceeds 100 ℃ and will automatically power off, the water outlet 27 is closed after the power-off, and the water filling port 261 and the air outlet 262 on the solution tank 26 are opened to fill water into the solution tank 26.
Whether the evaporation capacity generated by the evaporation furnace 25 in unit time meets the requirement or not can put out the fire in time, and the calculation is carried out in the following way:
knowing the heating power of the evaporation furnace 25, there are:
Q＝ΔmcpΔT+ΔmL
the amount of evaporation generated per unit time is:
wherein: q is the power (W) of the evaporation furnace 25, Δ m is the evaporation rate (g/s) of the solution, Δ T is the temperature difference (K) between the storage temperature of the solution and its boiling point, cpThe heat capacity (J/(g.K)) of the solution and L the latent heat of phase change (J/g).
Similarly, the evaporation furnace 25 with proper power can be selected according to the evaporation capacity requirement.
The fifth embodiment of the present invention provides a cable joint fire monitoring and automatic fire extinguishing system, and on the basis of the above embodiments, as shown in fig. 4 to 5, the bottom of the enclosure 1 is provided with an air inlet hole 14, the fire extinguishing pipe 3 is communicated with the enclosure 1 through the air inlet hole 14, and the bottom of the enclosure is provided with an air outlet hole 15.
In this embodiment, water vapour enters the enclosure 1 through the inlet holes from the bottom of the enclosure 1, the gas rises, the combustible and combustion-supporting gas in the enclosure 1 is discharged through the outlet holes 15, and the water vapour takes away the heat of the combustion products and is discharged through the outlet holes 15.
The sixth embodiment of the present invention provides a cable joint fire monitoring and automatic fire extinguishing system, and based on the first to third embodiments, as shown in fig. 1 to 3, the fire extinguishing apparatus 2 includes a fire extinguishing agent storage tank 21 and a power device, the fire extinguishing agent storage tank 21 is communicated with the cladding 1, the fire extinguishing valve 6 is disposed between the fire extinguishing agent storage tank 21 and the cladding 1, and the power device is communicated with the fire extinguishing agent storage tank 21 for driving the fire extinguishing agent in the fire extinguishing agent storage tank 21 into the cladding 1.
In the embodiment, the fire extinguishing agent storage tank 21 stores the dry powder fire extinguishing agent, which is suitable for the cable fire situation, the fire extinguishing valve 6 controls the dry powder fire extinguishing agent in the fire extinguishing agent storage tank 21 to enter the cladding 1, and after the fire extinguishing valve 6 is opened, the power device drives the dry powder fire extinguishing agent to enter the fire extinguishing pipeline 3, so as to enter the cladding 1.
A seventh embodiment of the present invention provides a cable joint fire monitoring and automatic fire extinguishing system, and based on any of the above embodiments, as shown in fig. 1 to 3, the power device includes a power gas cylinder 22, the power gas cylinder 22 is communicated with a fire extinguishing agent storage tank 21 through a power pipeline 23, and a power valve 24 is disposed between the power gas cylinder 22 and the fire extinguishing agent storage tank 21.
In the embodiment, the power gas cylinder 22 drives the fire extinguishing agent in the fire extinguishing agent storage tank 21 to enter the fire extinguishing pipeline 3 through gas, the power valve 24 is connected with the control module, the power valve 24 is closed in a normal state to ensure that the gas pressure in the cylinder does not leak, and high-pressure inert gas such as heptafluoropropane, mixed gas of nitrogen, argon and carbon dioxide, carbon dioxide and the like is arranged in the power gas cylinder 22, so that the structure is stable, secondary fire can not be caused, and the fire extinguishing device is suitable for electrical fire; after the control module opens the fire extinguishing valve 6, the power valve 24 is opened, and under the pushing of the high-pressure gas, the fire extinguishing agent enters the cladding 1.
An eighth embodiment of the present invention provides a cable joint fire monitoring and automatic fire extinguishing system, and based on any of the above embodiments, as shown in fig. 1 to 3, the detecting structure 11 includes a temperature sensing probe 12 and a smoke sensing probe 13.
In the embodiment, the temperature sensing probe 12 is used for detecting the temperature in the cladding 1, the smoke sensing probe 13 is used for detecting the smoke amount in the cladding 1, the temperature and the smoke amount are transmitted to the monitoring terminal 5 in real time, the monitoring is carried out in real time, when the temperature or the smoke amount exceeds a certain range, a fire disaster is judged to happen, and the control module opens each valve to finish fire suppression.
The ninth embodiment of the invention provides a cable joint fire monitoring and automatic fire extinguishing system, and on the basis of any one of the above embodiments, as shown in fig. 1 to 3, the system further comprises an alarm device 7, wherein the alarm device 7 is used for sending out an alarm signal when a fire breaks out and transmitting the alarm signal to the monitoring terminal 5.
In the embodiment, the alarm device 7 is connected with the fire extinguishing device 2, after the fire extinguishing device 2 is started, the alarm device 7 gives out sound and light alarm, and meanwhile, the alarm signal is transmitted to the monitoring terminal 5, so that the emergency treatment of remote monitoring is completed.
A tenth embodiment of the present invention provides a cable joint fire monitoring and automatic fire extinguishing system, and on the basis of any of the above embodiments, as shown in fig. 1 to 3, the enclosure 1 is provided with a fire retardant structure.
In the embodiment, the flame-retardant material is selected to isolate the contact between the fire in the cladding 1 and the outside of the cladding 1, so that the fire spreading speed is reduced, such as fire-retardant metal meshes and the like, the fire is extinguished in time, and the safety is ensured.
The first embodiment of the invention provides a cable joint fire monitoring and automatic fire extinguishing system, as shown in figures 1 to 3, comprising a cladding 1, a temperature sensing probe 12, a smoke sensing probe 13, a fire extinguishing agent storage tank 21, a power gas cylinder 22, an alarm device 7, a power valve 24, a fire extinguishing valve 6, a control unit 4 and a monitoring terminal 5, wherein the cladding 1 is arranged at the positions of three cable joints, the cladding 1 comprises the temperature sensing probe 12 and the smoke sensing probe 13, the temperature sensing probe 12 and the smoke sensing probe 13 detect the conditions in the cladding 1 and transmit the conditions to the monitoring terminal 5, three fire extinguishing pipelines 3 are respectively communicated with the three cladding 1 and the fire extinguishing agent storage tank 21, the fire extinguishing pipelines 3 are provided with the fire extinguishing valve 6, when the temperature sensing probe 12 and the smoke sensing probe 13 in the cable joint cladding 1 detect that the temperature and the smoke concentration in the cladding 1 exceed critical values, firstly, a fire extinguishing valve 6 communicated with a fire extinguishing agent storage tank 21 on a corresponding pipeline of the cladding 1 is opened through a control unit 4, then a power valve 24 connected with a power gas cylinder 22 and the fire extinguishing agent storage tank 21 is opened, high-pressure inert gas in the power gas cylinder 22 drives dry powder fire extinguishing agent in the fire extinguishing agent storage tank 21 to enter the cable joint cladding 1, early fire of the joint is extinguished, and meanwhile, an alarm device 7 gives an alarm to a monitoring terminal 5.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Claims (10)
1. A cable joint fire monitoring and automatic fire extinguishing system is characterized by comprising: the cable joint sealing and wrapping device comprises a wrapping shell (1) and a fire extinguishing device (2), wherein the fire extinguishing device (2) is communicated with the wrapping shell (1) through a fire extinguishing pipeline (3), a detection structure (11) used for sensing fire is arranged in the wrapping shell (1), the detection structure (11) is in signal connection with the fire extinguishing device (2), and the fire extinguishing device (2) collects sensing signals of the detection structure (11) and transmits the sensing signals to a control unit (4) and a monitoring terminal (5).
2. A cable joint fire monitoring and automatic fire extinguishing system according to claim 1, wherein a fire extinguishing valve (6) is arranged between the enclosure (1) and the fire extinguishing system, and the control unit (4) controls the opening and closing of the fire extinguishing valve (6) according to a sensing signal of the detecting structure (11).
3. A cable joint fire monitoring and automatic fire extinguishing system according to claim 2, characterized in that at least two of the enclosures (1) communicate with fire extinguishing means (2), and a fire extinguishing valve (6) is provided between any one of the enclosures (1) and the fire extinguishing means (2).
4. A cable joint fire monitoring and automatic fire extinguishing system according to any one of claims 1 to 3, characterized in that the fire extinguishing device (2) comprises an evaporation furnace (25) and a solution tank (26), the evaporation furnace (25) is communicated with the interior of the enclosure (1) through the fire extinguishing pipe (3), the liquid to be evaporated is circulated between the evaporation furnace (25) and the solution tank (26), and the evaporation furnace (25) is used for converting the liquid to be evaporated from a liquid state to a gaseous state.
5. A cable joint fire monitoring and automatic fire extinguishing system according to claim 4, characterized in that the bottom of the enclosure (1) is provided with an air inlet hole (14), the fire extinguishing pipe (3) is communicated with the enclosure (1) through the air inlet hole (14), and the bottom of the enclosure (1) is provided with an air outlet hole (15).
6. A cable joint fire monitoring and automatic fire extinguishing system according to any one of claims 1 to 3, wherein the fire extinguishing device (2) comprises a fire extinguishing agent storage tank (21) and a power device, the fire extinguishing agent storage tank (21) being in communication with the enclosure (1), the fire extinguishing valve (6) being provided between the fire extinguishing agent storage tank (21) and the enclosure (1), the power device being in communication with the fire extinguishing agent storage tank (21) for driving the fire extinguishing agent in the fire extinguishing agent storage tank (21) into the enclosure (1).
7. The cable joint fire monitoring and automatic fire extinguishing system according to claim 6, wherein the power device comprises a power gas cylinder (22), the power gas cylinder (22) is communicated with the fire extinguishing agent storage tank (21) through a power pipeline (23), and a power valve (24) is arranged between the power gas cylinder (22) and the fire extinguishing agent storage tank (21).
8. A cable joint fire monitoring and automatic fire extinguishing system according to any one of claims 1 or 2 or 3 or 5 or 7, characterized in that the detection structure (11) comprises a temperature sensing probe (12) and a smoke sensing probe (13).
9. A cable joint fire monitoring and automatic fire extinguishing system according to any one of claims 1 or 2 or 3 or 5 or 7, characterized by further comprising an alarm device (7), wherein the alarm device (7) is used for sending out an alarm signal when a fire breaks out and transmitting the alarm signal to the monitoring terminal (5).
10. A cable joint fire monitoring and automatic fire extinguishing system according to any one of claims 1 or 2 or 3 or 5 or 7, characterized in that the enclosure (1) is provided with fire retardant structures.
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| CN202111478150.XA CN114129935A (en) | 2021-12-06 | 2021-12-06 | Cable joint fire monitoring and automatic fire extinguishing system |
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| CN202111478150.XA CN114129935A (en) | 2021-12-06 | 2021-12-06 | Cable joint fire monitoring and automatic fire extinguishing system |
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Application publication date: 20220304 |