CN111097117A - Special full-automatic fire prevention and extinguishing system for high-efficiency extra-high voltage converter transformer - Google Patents
Special full-automatic fire prevention and extinguishing system for high-efficiency extra-high voltage converter transformer Download PDFInfo
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- CN111097117A CN111097117A CN202010118970.7A CN202010118970A CN111097117A CN 111097117 A CN111097117 A CN 111097117A CN 202010118970 A CN202010118970 A CN 202010118970A CN 111097117 A CN111097117 A CN 111097117A
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- 239000000843 powder Substances 0.000 claims abstract description 148
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 90
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 72
- 238000005507 spraying Methods 0.000 claims description 66
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 44
- 239000003595 mist Substances 0.000 claims description 21
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 17
- 230000006837 decompression Effects 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 16
- 210000003437 trachea Anatomy 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
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- 230000000694 effects Effects 0.000 abstract description 2
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- 238000002485 combustion reaction Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
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- 238000010586 diagram Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 239000012736 aqueous medium Substances 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
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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
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The utility model provides a special full-automatic fire prevention and extinguishing system of high-efficient special extra-high voltage converter transformer, includes superfine dry powder fire extinguishing systems and water agent fire extinguishing systems, water agent blowout pipeline and powder blowout pipeline are connected with a plurality of aqueous powder and spout the subassembly with mixing together, and the nozzle bottom is provided with a plurality of and holds the chamber with water and be linked together and distribute the thin water smoke export around superfine dry powder export, water agent import and water injection pipeline connection. The invention has the beneficial effects that: the physical fire extinguishing agent and the chemical fire extinguishing agent are combined with each other, the flowing fire effect is obvious particularly when the insulating oil of the converter transformer flows out, the secondary explosion can be prevented, and the harm degree of disaster accidents is reduced to the minimum.
Description
Technical Field
The invention relates to a special full-automatic fire prevention and extinguishing system for a high-efficiency extra-high voltage converter transformer.
Background
The transformer is an electric power device which converts alternating current energy into parameters of different voltages, currents and the like by utilizing the principle of electromagnetic induction. The oil immersed transformer immerses the iron core and the winding into an oil tank filled with insulating oil together to strengthen insulation and improve cooling and heat dissipation conditions. When faults such as serious overload, short circuit, insulation damage and the like occur in the transformer, the insulating oil is subjected to high temperature or electric arc action and is heated and decomposed to generate a large amount of hydrocarbon mixed gas, so that the pressure in the transformer is increased rapidly, and then the structural damage of a transformer oil tank (primary transformer explosion) is caused.
After the primary transformer explodes, the insulating oil, the mixed gas and the oil mist are violently released outwards through a rupture port of a transformer oil tank. The insulating oil leaks from the transformer, forms a liquid oil pool on the ground, and is ignited to generate pool fire. When the leaked pyrolysis product mixed gas and oil mist are mixed with air and then ignited, secondary deflagration or explosion can occur, and great threat is caused to personnel and equipment, thereby bringing serious loss to social economy. The insulating oil belongs to heavy oil, has high combustion heat value (often reaching 1000-2000 ℃), and is extremely difficult to extinguish after combustion.
At present, most of converter transformers of the domestic extra-high voltage converter stations are provided with a fire-fighting and fire-extinguishing mode of high-pressure water mist, after a fire disaster occurs, the water mist is extinguished in a full-coverage mode, two places of the domestic extra-high voltage converter stations have the fire disaster before, a water mist or foam extinguishing agent fire extinguishing system is adopted, the fire is extinguished for 14 hours, and converter transformer equipment is completely scrapped! Taking a Yinan extra-high voltage converter station as an example, the station has 28 converter transformers, and a 24+4 (standby) configuration mode is adopted, wherein the 28 converter transformers are all single-phase double-winding oil-immersed structures, the high-end capacity is 493.1MVA, the low-end capacity is 493.1MVA, each converter transformer is filled with insulating oil for about 150 tons, two electric fire pumps are arranged in the station, and the flow rate of each converter transformer is 400 m/h. The pressure of the fire-fighting pipe network is controlled to be about 0.90-0.96 MPa. The single converter transformer main pipeline is made of 6-inch steel pipes, branch pipelines of the spray heads are made of 1-inch steel pipes, the branch pipelines are changed into 3/4-inch pipelines and then connected with the spray heads, the water spraying flow rate of the single converter transformer spray head is 197L/s, and the flow rate of the single fire hydrant is 15L/s. And 199 high-end converter water spray nozzles and 228 low-end converter water spray nozzles are arranged on the single high-end converter water spray nozzle. The conversion results in 0.99L/S for each flow for the high end water spray and 0.86L/S for each flow for the low end water spray. Water is sprayed out through a spray head and then presents a fine water mist state, a protected object can be covered, the fire truck for fighting the converter station is mainly a foam fire truck, both water spray and foam extinguishing agents belong to physical fire extinguishing agents, fire is extinguished in a cooling and suffocation mode, the fire extinguishing efficiency is low, the duration of fire fighting is long, the consumption of the fire extinguishing agents is large, once converter transformer insulating oil flows out to form flowing fire, the fire can be extinguished often in hours or even tens of hours, and the loss caused by the fire is very large. The superfine dry powder extinguishing agent is used for chemical suppression fire extinguishing by cutting off a combustion reaction chain, is the extinguishing agent with the highest fire extinguishing efficiency (the fire extinguishing efficiency reaches 50 g/m) in the existing known extinguishing agents, and has the defects that the extinguishing agent cannot be continuously supplied, the cooling effect is low, the weight is light, the extinguishing agent is easy to float, and when the wind speed is more than 3m/s, the superfine dry powder extinguishing agent is not suitable for outdoor application. The water mist fire extinguishing agent and the superfine dry powder fire extinguishing agent have advantages and disadvantages, and no combined application in a converter transformer exists.
Disclosure of Invention
In order to solve the technical defects, the invention provides a special full-automatic fire prevention and extinguishing system for a high-efficiency extra-high voltage converter transformer, which can prevent secondary explosion and reduce the damage degree of disaster accidents to the minimum.
The invention is realized by the following measures:
a special full-automatic fire prevention and extinguishing system for a high-efficiency extra-high voltage converter transformer comprises a superfine dry powder extinguishing system and a water agent extinguishing system, wherein the superfine dry powder extinguishing system and the water agent extinguishing system are in signal connection with a fire automatic alarm and extinguishing controller used for controlling the opening of the superfine dry powder extinguishing system and the water agent extinguishing system, the fire automatic alarm and extinguishing controller is in signal connection with a fire signal detector used for monitoring fire signals of a transformer in real time on site, the superfine dry powder extinguishing system comprises a powder spraying pipeline, the water agent extinguishing system comprises a water agent spraying pipeline, the water agent spraying pipeline and the powder spraying pipeline are jointly connected with a plurality of water-powder mixed spraying components, each water-powder mixed spraying component comprises a cylindrical nozzle, a superfine dry powder spraying channel extending along a central shaft is arranged in the nozzle, and a superfine dry powder inlet communicated with the, the center of the bottom of the nozzle is provided with an ultrafine dry powder outlet communicated with the ultrafine dry powder injection channel, the ultrafine dry powder inlet is connected with a powder spraying pipeline, a water agent containing cavity which surrounds the ultrafine dry powder injection channel by a circle and is not communicated with the ultrafine dry powder injection channel is arranged in the nozzle, the side wall of the nozzle is provided with a water agent inlet communicated with the water agent containing cavity, the bottom of the nozzle is provided with a plurality of fine water mist outlets which are communicated with the water containing cavity and distributed around the ultrafine dry powder outlet, and the water agent inlet is connected with the water spraying pipeline.
Above-mentioned superfine dry powder fire extinguishing systems includes superfine dry powder jar, drive nitrogen cylinder group, starts the nitrogen cylinder, is connected with the drive trachea between drive nitrogen cylinder group and the superfine dry powder jar, and powder blowout pipeline is connected to the superfine dry powder jar, start between nitrogen cylinder and the powder blowout pipeline and all be connected with the start trachea between drive nitrogen cylinder group and the powder blowout pipeline, start the trachea and be connected through the selector valve with powder blowout pipeline, be provided with the powder way check valve on the powder blowout pipeline, be provided with drive trachea check valve, drive trachea relief pressure valve, drive gas cylinder check valve and drive gas circuit relief valve on the drive trachea.
The water agent fire extinguishing system comprises an electric fire pump, wherein the electric fire pump is connected with a water agent spraying pipeline, and a decompression release valve, a decompression electromagnetic valve, a mechanical water drain valve and an overflow valve are arranged on the water agent spraying pipeline.
The top of the superfine dry powder tank is provided with a dry powder tank safety valve, the tail end of the powder spraying pipeline extends to the inner bottom of the superfine dry powder tank, a release pipeline is connected between the top of the superfine dry powder tank and the powder spraying pipeline, and a pilot valve and a powder path release valve are arranged on the release pipeline.
The invention has the beneficial effects that: the superfine dry powder fire extinguishing agent has excellent water repellency, and can inhibit and weaken the occurrence of deflagration and detonation after being injected into combustible gas and combustible dust by compressed gas and mixed with the combustible gas and is proved by sufficient experiments that after water-superfine dry powder is sprayed in a combined mode, the superfine dry powder fire extinguishing agent can quickly cut off a combustion reaction chain and extinguish a fire, water is used for cooling a protection area, dust is reduced, re-combustion is prevented, and flying of the superfine dry powder is inhibited.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural diagram of a water-powder mixed spraying assembly according to the present invention;
wherein: an electric fire pump 1, a decompression release valve 2, a decompression electromagnetic valve 3, a water agent spraying pipeline 4, a fire signal detector 5, a water-powder mixed spraying assembly 6, a pressure signal feedback device 7, a selection valve 8, a starting air path one-way valve 9, a powder spraying pipeline 10, a powder path check valve 11, a powder path release valve 12, a starting air path safety valve 13, a dry powder tank safety valve 14, a pilot valve 15, an ultra-fine dry powder tank 16 and a driving air path check valve 17, the device comprises a driving gas circuit pressure reducing valve 18, a driving gas cylinder one-way valve 19, a driving nitrogen gas cylinder group 20, a driving gas circuit 21, a driving gas circuit safety valve 22, a starting nitrogen gas cylinder 23, a starting cylinder electromagnetic valve 24, a fire automatic alarm fire-extinguishing controller 25, a remote control system 26, a nozzle 6.1, an ultrafine dry powder spraying channel 6.2, an ultrafine dry powder inlet 6.3, an aqueous agent inlet 6.4, an aqueous agent containing cavity 6.5, an ultrafine dry powder outlet 6.6 and a fine water mist outlet 6.7.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 and 2, a special full-automatic fire prevention and extinguishing system for a high-efficiency extra-high voltage converter transformer comprises an ultra-fine dry powder extinguishing system and an aqueous agent extinguishing system, wherein the ultra-fine dry powder extinguishing system and the aqueous agent extinguishing system are both in signal connection with an automatic fire alarm and extinguishing controller 25 for controlling the opening of the ultra-fine dry powder extinguishing system and the aqueous agent extinguishing system, the automatic fire alarm and extinguishing controller 25 is in signal connection with a fire signal detector 5 for monitoring fire signals of a transformer in real time, the ultra-fine dry powder extinguishing system comprises a powder spraying pipeline 10, the aqueous agent extinguishing system comprises an aqueous agent spraying pipeline 4, the aqueous agent spraying pipeline 4 and the powder spraying pipeline 10 are jointly connected with a plurality of aqueous powder mixed spraying components 6, each aqueous powder mixed spraying component 6 comprises a cylindrical nozzle 6.1, an ultra-fine dry powder spraying channel 6.2 extending along a central axis is arranged in the nozzle 6.1, an ultra-fine dry, the center of the bottom of the nozzle 6.1 is provided with an ultrafine dry powder outlet 6.6 communicated with an ultrafine dry powder injection channel 6.2, the ultrafine dry powder inlet 6.3 is connected with a powder spraying pipeline 10, a water agent containing cavity 6.5 which surrounds the ultrafine dry powder injection channel 6.2 for a circle and is not communicated with the ultrafine dry powder injection channel 6.2 is arranged in the nozzle 6.1, the side wall of the nozzle 6.1 is provided with a water agent inlet 6.4 communicated with the water agent containing cavity 6.5, the bottom of the nozzle 6.1 is provided with a plurality of fine water mist outlets 6.7 communicated with the water containing cavity and distributed around the ultrafine dry powder outlet 6.6, and the water agent inlet 6.4 is connected with the water spraying pipeline.
The superfine dry powder fire extinguishing system comprises a superfine dry powder tank 16, a driving nitrogen cylinder group 20 and a starting nitrogen cylinder 23, wherein a driving air pipe is connected between the driving nitrogen cylinder group 20 and the superfine dry powder tank 16, the superfine dry powder tank 16 is connected with a powder spraying pipeline 10, starting air pipes are connected between the starting nitrogen cylinder 23 and the powder spraying pipeline 10 and between the driving nitrogen cylinder group 20 and the powder spraying pipeline 10, the starting air pipes are connected with the powder spraying pipeline 10 through a selector valve 8, a powder way check valve 11 is arranged on the powder spraying pipeline 10, and a driving air pipe check valve, a driving air pipe pressure reducing valve, a driving air cylinder check valve 19 and a driving air path safety valve 22 are arranged on the driving air pipes. The water agent fire extinguishing system comprises an electric fire pump 1, the electric fire pump 1 is connected with a water agent spraying pipeline 4, and a decompression release valve 2, a decompression electromagnetic valve 3, a mechanical water drain valve and an overflow valve are arranged on the water agent spraying pipeline 4. The top of the superfine dry powder tank 16 is provided with a dry powder tank safety valve 14, the tail end of the powder spraying pipeline 10 extends to the inner bottom of the superfine dry powder tank 16, a release pipeline is connected between the top of the superfine dry powder tank 16 and the powder spraying pipeline 10, and the release pipeline is provided with a pilot valve 15 and a powder path release valve 12.
When the fire signal detector 5 detects a fire, the fire automatic alarm fire-extinguishing controller 25 sends out an audible and visual alarm, and simultaneously transmits an alarm signal to the remote control system 26, so that the purposes of monitoring the fire and preventing the fire from spreading are achieved. If there are two or more in the fire protection zone, fire signal detector 5 can arrange by the multiunit according to the protection zone, when a certain protection zone breaks out the fire, the regional fire signal detector 5 that breaks out the fire starts nitrogen cylinder 23 and decompression solenoid valve 3 through conflagration automatic alarm fire extinguishing controller 25 intelligent control area that breaks out the fire and corresponds, can realize corresponding protection zone's water-superfine dry powder combination and put out a fire, can not influence the protection zone that does not break out the fire.
The water powder mixed spraying assembly 6 is provided with two inlets which are respectively connected with a water extinguishing agent and a superfine dry powder extinguishing agent, the two extinguishing agents are separately arranged and do not affect each other, the two extinguishing agents can act together when combined for spraying, the superfine dry powder extinguishing agent cuts off a combustion reaction chain to carry out chemical suppression for extinguishing fire, and the water mist cools and dustfalls for a protection area to prevent re-combustion.
Fire extinguishing route when a fire breaks out in a certain protected area:
the fire extinguishing route of the superfine dry powder fire extinguishing agent is as follows: the fire signal detector 5 of the fire area transmits a fire signal to the fire automatic alarm fire-extinguishing controller 25, the fire automatic alarm fire-extinguishing controller 25 intelligently controls a start nitrogen cylinder 23 corresponding to the fire area, the start nitrogen cylinder 23 restarts a selection valve 8 of the corresponding area, and opens a drive nitrogen cylinder group 20, the movable nitrogen cylinder group passes through a drive gas cylinder one-way valve 19, enters a collecting pipe, is decompressed by a drive gas circuit 21 decompression valve 18, enters an ultra-fine dry powder tank 16 through a drive gas circuit 21 check valve, stirs ultra-fine dry powder in the tank, so that the ultra-fine dry powder becomes gas-solid convenient to flow, when the pressure of the ultra-fine dry powder tank 16 reaches the set pressure of a pilot valve 15, a powder circuit release valve 12 is opened, the ultra-fine dry powder mixture body passes through a powder spraying pipeline 10, a powder circuit check valve 11 and the selection valve 8 of the fire area, and the water-powder mixed spraying, the area without fire protection is not affected. The pressure signal feedback device 7 ensures that the equipment operates under the safe pressure, and the starting air path one-way valve 9 and the starting air path safety valve 13 ensure the operation safety.
High-pressure water mist fire extinguishing route: the regional fire signal detector 5 of conflagration breaing out gives conflagration automatic alarm fire extinguishing controller 25 with fire signal transmission, the decompression solenoid valve 3 that the regional correspondence of conflagration took place for conflagration automatic alarm fire extinguishing controller 25 intelligent control, decompression solenoid valve 3 falls the water pressure release of control decompression release valve 2, decompression release valve 2 acts, aqueous medium with pressure passes through water agent blowout pipeline 4, it puts out a fire to spray the regional fire of taking place by the water powder thoughtlessly spouts subassembly 6, can not influence the protection zone of not taking place the conflagration.
On-site manual control fire extinguishing route: the automatic fire alarm and fire extinguishing controller 25 has 1 field starting device in each protection area, and after the starting devices are pressed down, the contents of a superfine dry powder fire extinguishing route and a high-pressure water mist fire extinguishing route can be realized.
On-site manual mechanical control fire extinguishing route: when the electric control is invalid, the starting cylinder electromagnetic valve 24 has a manual mechanical control function, and after being manually pressed, the fire extinguishing function after the nitrogen cylinder 23 is started in the superfine dry powder fire extinguishing route can be realized. The mechanical water drain valve in the water spraying system is pressed down, so that the fire extinguishing function behind the decompression electromagnetic valve 3 can be realized in the high-pressure water mist fire extinguishing route.
The remote control system 26 controls the fire suppression route: when the remote control system 26 monitors that a fire occurs in a certain protection area, the start button corresponding to the protection area is pressed, and the contents of the superfine dry powder fire extinguishing route and the high-pressure water mist fire extinguishing route can be realized. In all the control routes described above, the field manual control is given priority.
The water-powder mixing and spraying assembly 6 is provided with two inlets, the inlet in the circumferential direction is connected with a water source through a water agent spraying pipeline 4, an electric fire pump 1 is used as a power source, the power enters the water-powder mixing and spraying assembly 6 through a decompression release valve 2 to form a bypass flow, and the water-powder mixing and spraying assembly is sprayed out through a water mist outlet 6.7 to form water mist; the middle inlet is connected with an ultrafine dry powder tank 16 through a powder spraying pipeline 10, and the passage adopts the Laval nozzle principle to spray ultrafine dry powder after accelerating, so that the protective area is quickly covered, and the fire is extinguished. The whole set of fire extinguishing system can realize full-automatic control and field manual control, can also realize remote control, and the field manual control has priority. Aiming at the current converter transformer with a built water mist fire extinguishing system in China, the conversion transformer can be flexibly refitted on the basis of not changing the original fire extinguishing system, the independent spraying of water mist or superfine dry powder can be realized through the special water powder mixed spraying assembly 6 after the refitting, the combined spraying of the water mist and the superfine dry powder can also be realized, the mutual combination of a physical fire extinguishing agent and a chemical fire extinguishing agent is realized, the respective advantages are respectively exerted, the two sets of fire extinguishing systems are mutually supplemented and independent and do not influence each other, equivalently, two sets of independent fire extinguishing systems are provided, and the reliability of extinguishing fire of the equipment is greatly improved.
The foregoing is only a preferred embodiment of this patent, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of this patent, and these modifications and substitutions should also be regarded as the protection scope of this patent.
Claims (4)
1. The utility model provides a special full-automatic fire prevention and extinguishing system of high-efficient special extra-high voltage converter transformer which characterized in that: the fire-extinguishing system comprises an ultrafine dry powder fire-extinguishing system and a water agent fire-extinguishing system, wherein the ultrafine dry powder fire-extinguishing system and the water agent fire-extinguishing system are in signal connection with a fire automatic alarm fire-extinguishing controller for controlling the opening of the ultrafine dry powder fire-extinguishing system and the water agent fire-extinguishing system, the fire automatic alarm fire-extinguishing controller is in signal connection with a fire signal detector for monitoring a fire signal of a transformer in real time, the ultrafine dry powder fire-extinguishing system comprises a powder spraying pipeline, the water agent fire-extinguishing system comprises a water agent spraying pipeline, the water agent spraying pipeline and the powder spraying pipeline are jointly connected with a plurality of water and powder mixed spraying components, each water and powder mixed spraying component comprises a cylindrical nozzle, an ultrafine dry powder spraying channel extending along a central shaft is arranged in the nozzle, an ultrafine dry powder inlet communicated with the ultrafine dry powder spraying channel, the spray nozzle is characterized in that the superfine dry powder inlet is connected with a powder spraying pipeline, a water agent containing cavity which surrounds the superfine dry powder spraying channel for a circle and is not communicated with the superfine dry powder spraying channel is arranged in the spray nozzle, a water agent inlet which is communicated with the water agent containing cavity is arranged on the side wall of the spray nozzle, a plurality of water mist outlets which are communicated with the water agent containing cavity and distributed around the superfine dry powder outlet are arranged at the bottom of the spray nozzle, and the water agent inlet is connected with the water spraying pipeline.
2. The special full-automatic fire prevention and extinguishing system for the high-efficiency extra-high voltage converter transformer according to claim 1, characterized in that: superfine dry powder fire extinguishing systems includes superfine dry powder jar, drive nitrogen cylinder group, starts the nitrogen cylinder, is connected with the drive trachea between drive nitrogen cylinder group and the superfine dry powder jar, and powder blowout pipeline is connected to the superfine dry powder jar, start between nitrogen cylinder and the powder blowout pipeline and all be connected with the start trachea between drive nitrogen cylinder group and the powder blowout pipeline, start the trachea and be connected through the selector valve with powder blowout pipeline, be provided with the powder way check valve on the powder blowout pipeline, be provided with drive trachea check valve, drive trachea relief pressure valve, drive gas cylinder check valve and drive gas circuit relief valve on the drive trachea.
3. The special full-automatic fire prevention and extinguishing system for the high-efficiency extra-high voltage converter transformer according to claim 1, characterized in that: the water agent fire extinguishing system comprises an electric fire pump, the electric fire pump is connected with a water agent spraying pipeline, and a decompression release valve, a decompression electromagnetic valve, a mechanical water drain valve and an overflow valve are arranged on the water agent spraying pipeline.
4. The special full-automatic fire prevention and extinguishing system for the high-efficiency extra-high voltage converter transformer according to claim 2, characterized in that: the top of the superfine dry powder tank is provided with a dry powder tank safety valve, the tail end of the powder spraying pipeline extends to the inner bottom of the superfine dry powder tank, a release pipeline is connected between the top of the superfine dry powder tank and the powder spraying pipeline, and a pilot valve and a powder path release valve are arranged on the release pipeline.
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| CN202010118970.7A CN111097117A (en) | 2020-02-26 | 2020-02-26 | Special full-automatic fire prevention and extinguishing system for high-efficiency extra-high voltage converter transformer |
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| CN202010118970.7A CN111097117A (en) | 2020-02-26 | 2020-02-26 | Special full-automatic fire prevention and extinguishing system for high-efficiency extra-high voltage converter transformer |
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| CN111097117A true CN111097117A (en) | 2020-05-05 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113577603A (en) * | 2021-07-29 | 2021-11-02 | 广东电网有限责任公司 | Fire-fighting and cooling integrated system and control method thereof |
| CN114432629A (en) * | 2021-12-31 | 2022-05-06 | 王晶 | System capable of implementing accurate fire extinguishing in laboratory |
| CN115154967A (en) * | 2022-06-23 | 2022-10-11 | 国网安徽省电力有限公司电力科学研究院 | Test platform and test method for extinguishing transformer oil fire by using dry powder and water spray |
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| CN114432629A (en) * | 2021-12-31 | 2022-05-06 | 王晶 | System capable of implementing accurate fire extinguishing in laboratory |
| CN115154967A (en) * | 2022-06-23 | 2022-10-11 | 国网安徽省电力有限公司电力科学研究院 | Test platform and test method for extinguishing transformer oil fire by using dry powder and water spray |
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