CN114042276A - Fixed fire extinguishing system for extra-high voltage converter substation - Google Patents
Fixed fire extinguishing system for extra-high voltage converter substation Download PDFInfo
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- CN114042276A CN114042276A CN202111481244.2A CN202111481244A CN114042276A CN 114042276 A CN114042276 A CN 114042276A CN 202111481244 A CN202111481244 A CN 202111481244A CN 114042276 A CN114042276 A CN 114042276A
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- fire
- fire extinguishing
- turbofan
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- cannon
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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
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/28—Accessories for delivery devices, e.g. supports
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/04—Control of fire-fighting equipment with electrically-controlled release
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/002—Apparatus for mixing extinguishants with water
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/28—Casings; Parts thereof or accessories therefor dustproof, splashproof, drip-proof, waterproof or flameproof
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention discloses a fixed fire extinguishing system for an extra-high voltage converter substation, which comprises a plurality of fire extinguishing devices, a supply module and a control module. The fire extinguishing device comprises a turbofan cannon and a cannon tower, wherein the turbofan cannon can be rotatably arranged on the cannon tower to carry out fire extinguishing operation; the supply module comprises a water supply system, a foam liquid supply system and a balanced foam proportion mixer, wherein the water supply system and the foam liquid supply system provide a water mist source and a foam source for the balanced foam proportion mixer; the turbofan cannon control module comprises an alarm host, a turbofan cannon control cabinet, a control room control cabinet and a control computer, and is used for controlling the pump set and the turbofan cannon to act. The fire extinguishing system can prolong the service life of foam, and provides reasonable and efficient fire protection for fire in development and violent stages of a converter transformer substation by utilizing the functions of fine water spray cooling, dilution, impact emulsification, covering and the like.
Description
Technical Field
The invention belongs to the technical field of conversion substation fire protection, and particularly relates to a fixed fire extinguishing system for an extra-high voltage conversion substation.
Background
Converter transformer fire belongs to oil fire, and according to data analysis of the previous converter transformer fire, the converter transformer fire mainly occurs in weak links such as a network side sleeve and the like, and then transformer oil is sprayed out to cover the periphery of the converter transformer to form flowing fire and oil pool fire. Because the water consumption and the foam quantity for extinguishing the fire of the fine water mist of the turbofan foam are small, the coverage area is wide, the wind pressure is strong, the range is far, and the device has the rotating function in the horizontal direction and the vertical direction, and can realize the quick fire extinguishing of the converter transformer. The turbofan foam water mist fire extinguishing system has more advantages than other converter substation fire extinguishing systems, and is also a national power grid key investment project.
At present, the majority of fire extinguishing modes applied to large-scale converter substations mainly include two modes, namely a water spray fire extinguishing system and a synthetic foam spray fire extinguishing system. When a converter transformer fire occurs, the fire extinguishing system has limited fire extinguishing capability due to the limitations of capacity, power, arrangement mode, protection range and the like, and has better fire extinguishing effect only in the initial stage of the fire. Therefore, a set of overall solution of fire protection technology is urgently needed to be researched for fire protection of a large converter transformer, the fire protection safety control level of the converter transformer is practically improved, and fire early warning, initial fire and development and violent stage fire can be timely and effectively dealt with. The turbofan foam mist fire suppression system generates smaller mist droplets than conventional systems and propels them remotely, with a larger surface area and therefore higher heat exchange capacity. The small fog drops are suspended and dispersed in the air and can reach the shielding area of the fire source. Therefore, the method is more suitable for the fire protection with harsh requirements on the converter transformer.
In recent years, the number of times of fire accidents of large-scale converter transformers is increased, the fire accidents of the converter transformers cause damage to various power transformation equipment, great impact is brought to industrial and agricultural production in nearby areas, normal operation of a power grid is seriously affected, and therefore prevention of the fire of main equipment of the large-scale converter transformers becomes very important. The turbofan foam mist fire suppression system generates smaller mist droplets than conventional systems and propels them remotely, with a larger surface area and therefore higher heat exchange capacity. The small fog drops are suspended and dispersed in the air and can reach the shielding area of the fire source.
Disclosure of Invention
Based on this, to the not enough of above-mentioned prior art situation, provide a fixed turbofan foam water mist fire extinguishing systems for extra-high voltage conversion transformer substation.
The purpose of the invention is realized by the following technical scheme:
a fixed fire extinguishing system for an extra-high voltage converter substation, comprising:
the supply module comprises a water supply system, a foam liquid supply system and a balanced foam proportion mixer, wherein the water supply system is communicated with a water source inlet of the balanced foam proportion mixer, and the foam liquid supply system is communicated with a foam liquid inlet of the balanced foam proportion mixer;
the fire extinguishing device comprises a turbofan cannon and a turret, wherein the turbofan cannon is communicated with a liquid outlet of the balanced type foam proportioner, and the turbofan cannon is rotatably arranged on the turret and is subjected to azimuth adjustment through a control module;
the control module comprises an alarm host, a fire control room control cabinet, a turbofan cannon control cabinet and a control computer, wherein the control computer receives a fire alarm signal of the alarm host and determines an extra-high voltage converter transformer which is in fire according to the signal source, the control computer sends a fire extinguishing instruction about the fire position to the fire control room control cabinet, and the turbofan cannon control cabinet receives the instruction and then drives the corresponding turbofan cannon to adjust the direction, so that the orientation of the turbofan cannon is aligned to the fire position and fire extinguishing operation is carried out.
Furthermore, the nozzle head of the turbofan cannon adopts a water mist nozzle to provide high pressure for crushing the mixed liquid into fine fog drops, so that the heat exchange capacity is improved, and therefore the fire is efficiently extinguished, the temperature is reduced, and smog is effectively adsorbed.
Further, water supply system includes water pump package, steady voltage pump package, pond and uncoded smoke detector, and wherein water pump package, steady voltage pump package and uncoded smoke detector set up at the water supply container equipment room, the water supply container equipment room is including container box and top heat-insulating cabinet layer, and can dismantle between the two, and its function is including thermal-insulated and arrange the thermal-insulated frame layer slope direction in order smoothly to drain water according to the transformer substation room in the scene.
Furthermore, the foam liquid supply system comprises a foam pump set, a foam tank and a balanced foam proportioner-foam spray control valve set, and is arranged in a foam liquid supply container equipment room, the foam liquid supply container equipment room comprises a container box body and a top heat insulation cabinet layer, the container box body and the top heat insulation cabinet layer are detachable, and the foam liquid supply system has the functions of heat insulation and smooth drainage by adjusting the slope direction of a top heat insulation frame layer according to the arrangement of an on-site substation room.
Furthermore, each turbofan gun jet curve can cover a single protected extra-high voltage converter transformer.
Furthermore, the balanced foam proportioner changes the traditional premixing mode into the existing mixing mode, and can mix fire extinguishing liquid in real time.
Furthermore, each converter transformer adopts at least 1 main fire extinguishing of the turbofan cannon, 1 auxiliary fire extinguishing of the turbofan cannon, and each turbofan cannon is responsible for two converter transformers, and the principle of temporarily protecting an adjacent converter transformer when the adjacent turbofan cannon fails is respectively backed up.
Furthermore, the control module is provided with a remote manual mode and a wireless remote sensing operation mode for equipment debugging and periodic maintenance besides an automatic control mode, when the control module is switched to the remote manual mode, the control computer receives an allocation instruction of an operator and forwards the allocation instruction to the fire control room control cabinet, the fire control room control cabinet controls the corresponding turbofan cannon control cabinet to carry out fire extinguishing operation according to the allocation instruction, and when the control module is switched to the wireless remote sensing control mode, the control computer receives a power-off signal of a corresponding transformer and then wirelessly remotely senses the corresponding turbofan cannon control cabinet to carry out fire extinguishing operation.
Compared with the prior art, the invention has the beneficial effects that: the water consumption and the foam quantity for extinguishing the fire of the fine water mist of the turbofan foam are small, the coverage area is wide, the air pressure is strong, the range is far, the rotating function in the horizontal direction and the vertical direction is realized, and the quick fire extinguishing of the converter transformer can be realized. The system adopts the existing mixing mode to mix the water mist and the foam liquid in a certain proportion, so that the service life of the foam is prolonged. Meanwhile, a flexible control system is adopted, the operation is convenient and fast, the control mode is diversified, and the reliability is high. Not only effective to the initial stage conflagration of converter transformer substation, simultaneously to the converter transformer substation conflagration in development, fierce stage, two turbofan cannons are adopted to put out a fire and are protected in every protected area, and the protection has improved fire extinguishing efficiency.
Drawings
Fig. 1 is a piping layout connection diagram of a system of a converter substation according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of system elevation installation and curved jet of a converter substation according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of the fire extinguishing apparatus of the present invention.
Fig. 4 is a fire extinguishing relationship diagram of a converter substation and a turbofan cannon according to an embodiment of the invention.
Fig. 5 is a control architecture diagram of the electrical control cabinet and the turbofan cannon according to an embodiment of the invention.
Detailed Description
The fire extinguishing process and the system layout of the present invention using the fixed type turbofan foam water mist fire extinguishing system will be described in detail with reference to the attached drawings in the following embodiments.
As shown in a system flow chart of fig. 1, the fixed type turbofan foam water mist fire extinguishing system for the ultra-high voltage converter substation comprises a plurality of fire extinguishing devices 1, a supply module 2 and a control module 3.
The fire extinguishing device 1 comprises a turbofan cannon 11 and a cannon tower 12, wherein the turbofan cannon is rotatably arranged on an equipment base of the cannon tower to perform fire extinguishing operation. The direction and the angle of the turbofan cannon can be adjusted, so that the track of the sprayed water mist and foam mixed liquid can completely cover the protected converter transformer (figure 2).
The supply module 2 comprises a water supply system 21, a foam liquid supply system 22 and a balanced foam proportion mixer 23. And a water source inlet and a foam liquid inlet of the balanced foam proportioning mixer 23 are respectively connected with a water supply system 21 and a foam liquid supply system 22. The liquid outlet of the balanced foam proportioner 23 is connected with the inlet in front of the control valve 4, and the outlet of the control valve 4 is connected with a mixed liquid conveying pipeline in the turbofan gun turret 12 to convey the mixed liquid to the turbofan gun 11. The turbofan cannon 11 (fig. 3) adopts a water mist nozzle to provide high pressure for crushing the mixed liquid into fine fog drops, and the nozzle sprays large-area foam water mist to quickly cover a fire area through the turbofan.
The water supply system 21 comprises a water pump set, a pressure stabilizing pump set, a water pool and a non-coding smoke detector, wherein the water pump set, the pressure stabilizing pump set and the non-coding smoke detector are arranged in a water supply container equipment room near the converter transformer. The water pool is connected with a water pump set through a pipeline, the water pump set is connected with a pressure stabilizing pump set through a pipeline, and a water outlet of the pressure stabilizing pump set is communicated with a water source inlet of the balanced type foam proportioning mixer 23 through a pipeline.
The foam liquid supply system comprises a foam pump set, a foam tank and a foam control valve set which are all arranged between foam liquid supply container equipment near the converter transformer. The foam tank is connected with a foam pump set through a pipeline, and the foam pump set is communicated with a foam liquid inlet of the balanced type foam proportioning mixer through a foam control valve set.
Wind speed tests show that the foamed water can resist wind speed of 10m/s, and when the wind speed reaches 15m/s, the offset distance does not exceed 2 m. Referring to fig. 4, the turbofan cannons are located on the center lines of the two converter transformers, and the scanning coverage mode is set as default during fire extinguishing, namely the orientation of the turbofan cannons is aligned to the root of the network side sleeve of the firing converter transformer, S-shaped scanning is started after T seconds of spraying, the turbofan cannons are deflected leftwards, then heads are lifted upwards, then deflected rightwards, and then are deflected upwards, and then the fire is returned in a reverse S shape after reaching the maximum elevation angle. The value range of T can be set according to actual needs, for example, the value is taken in 8-15 seconds, in addition, an automatic searching mode is further arranged for detecting and positioning, namely, the fire source is positioned through an image sensor, in this example, a red ultraviolet imaging or thermal imaging mode can also be adopted, and then the spray head is aligned to the fire source for spraying. The maximum pitch angle and the maximum left-right swinging angle of the turbofan cannon are determined according to the position size of the converter transformer.
Under the quasi-working state, the pressure of the system pipe network is maintained by the pressure stabilizing pump group, and the rear of the control valve 4 is empty. After a fire occurs, the control module 3 receives a fire alarm signal and a fire alarm signal of a temperature sensing cable of 2 paths corresponding to the transformer and simultaneously receives a power-off signal of the corresponding transformer, the alarm host 31 enters a 30s delay start (adjustable) stage, the corresponding control valve 4, the water pump set, the foam pump set and the corresponding balanced foam proportioner 23 are sequentially started in a linkage manner, the turbofan cannon sprays the fine water mist foam mixed liquid and requires to extinguish the fire, and if the judgment is misjudgment through a video, a remote pump-stopping button can be pressed through authorization to stop spraying; or in a manual mode, a person on duty presses a multi-coil button of the turbofan fire alarm, receives a power-off signal of the corresponding transformer, starts the corresponding control valve 4, the water pump set, the foam pump set and the corresponding balanced foam proportioner 23, sprays the water mist and foam mixed liquid and requires fire extinguishing. After the fire is confirmed to be extinguished by personnel, the system is manually reset.
As shown in fig. 5, the turbofan gun is connected to the gun turret through a horizontal rotation shaft and a vertical rotation shaft, the turbofan gun includes a hydraulic motor, a hydraulic station, a first oil valve, a second oil valve, a third oil valve, a fourth oil valve, a hydraulic pump, a hydraulic cylinder 13, a horizontal encoder, a vertical encoder, a water valve, and a fan motor, a fixed end of the hydraulic cylinder is connected to the base, a movable end of the hydraulic cylinder is connected to the turbofan gun, the hydraulic motor provides power to the hydraulic station, oil paths between the hydraulic station and the hydraulic pump are a horizontal left-turn oil path and a horizontal right-turn oil path, the first oil valve controls the horizontal left-turn oil path of the hydraulic pump, the second oil valve controls the horizontal right-turn oil path of the hydraulic pump, the horizontal encoder is connected to the horizontal rotation shaft of the turbofan gun to obtain a horizontal orientation, and the third oil valve controls a vertical upward extending oil path of the hydraulic cylinder, the fourth oil valve controls a vertical downward oil way of the hydraulic cylinder, the vertical encoder is connected with a vertical rotating shaft of the turbofan cannon to obtain a vertical direction, the water valve controls a spray nozzle water way, and the fan motor provides strong wind power.
In the converter transformer station, 24 converter transformers 6 are arranged in common, 12 turbofan cannons are arranged in common, 6 converter transformers are arranged in each row, 3 turbofan cannons are arranged in common, 4 rows are arranged in common, the turbofan cannons are arranged in the front of the centers of the corresponding converter transformers, 2 converter transformers are respectively protected by 1 turbofan cannons according to the principle that 1 converter transformer close to each other is protected when the adjacent turbofan cannons are in fault, when the head converter transformer and the tail converter transformer are eliminated, the rest converter transformers can be respectively protected by the two turbofan cannons, fault signals between the adjacent turbofan cannon control cabinets in each row are connected through control cables, and therefore the corresponding converter transformer to be protected by each turbofan cannon can be determined. The control cabinet of the turbofan cannons which receives the fire signal controls the corresponding cannon heads of the turbofan cannons to rotate to the direction of the fire converter transformer to implement fire extinguishing operation, and the arrangement corresponding relation between the single row of the turbofan cannons and the converter transformer is shown in figure 4.
As shown in fig. 4, the # 1 turbofan cannon is respectively responsible for protecting the # 1 converter transformer, the # 2 converter transformer and the # 3 converter transformer when the # 2 turbofan cannon fails; the No. 2 turbofan cannon is respectively responsible for protecting the No. 3 converter transformer, the No. 4 converter transformer, the No. 2 converter transformer when the No. 1 turbofan cannon fails and protecting the No. 5 converter transformer when the No. 3 turbofan cannon fails; and the No. 3 turbofan cannon is respectively responsible for protecting the No. 5 converter transformer, the No. 6 converter transformer and the No. 4 converter transformer when the No. 2 turbofan cannon fails. Each turbofan cannon can protect a plurality of converter transformers, but only respectively protects the converter transformers, but does not protect the converter transformers at the same time, and if the turbofan cannons receive a plurality of converter transformer fire signals protected by the turbofan cannons at the same time, the turbofan cannons only receive one of the converter transformer fire signals.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A fixed fire extinguishing system for extra-high voltage converter substation, its characterized in that includes:
the supply module comprises a water supply system, a foam liquid supply system and a balanced foam proportion mixer, wherein the water supply system is communicated with a water source inlet of the balanced foam proportion mixer, and the foam liquid supply system is communicated with a foam liquid inlet of the balanced foam proportion mixer;
the fire extinguishing device comprises a turbofan cannon and a turret, wherein the turbofan cannon is communicated with a liquid outlet of the balanced type foam proportioner, and the turbofan cannon is rotatably arranged on the turret and is subjected to azimuth adjustment through a control module;
the control module comprises an alarm host, a fire control room control cabinet, a turbofan cannon control cabinet and a control computer, wherein the control computer receives a fire alarm signal of the alarm host and determines an extra-high voltage converter transformer which is in fire according to the signal source, the control computer sends a fire extinguishing instruction about the fire position to the fire control room control cabinet, and the turbofan cannon control cabinet receives the instruction and then drives the corresponding turbofan cannon to adjust the direction, so that the orientation of the turbofan cannon is aligned to the fire position and fire extinguishing operation is carried out.
2. The fixed fire extinguishing system for the extra-high voltage converter substation according to claim 1, wherein the turbofan gun employs a high pressure fine water mist nozzle to break the mixed liquid into fine mist droplets.
3. The fixed fire extinguishing system for the extra-high voltage converter substation according to claim 1, further comprising a container equipment room for insulating heat and adjusting the slope direction of the top heat insulation frame layer according to the arrangement of the field substation room so as to smoothly discharge water, wherein the container equipment room comprises a container body and a top heat insulation cabinet layer, and the container body is detachably connected with the top heat insulation cabinet layer.
4. The fixed fire extinguishing system for the extra-high voltage converter substation according to claim 3, wherein the water supply system and the foam concentrate supply system are respectively located between two different container devices.
5. The fixed fire suppression system for an extra-high voltage converter substation according to claim 1, wherein each of said turbofan gun current curves is capable of covering a single protected extra-high voltage converter transformer.
6. The fixed fire extinguishing system for the extra-high voltage converter substation according to claim 1, wherein the balanced foam proportioner changes a traditional premixing mode into an existing mixing mode, and can mix fire extinguishing liquid in real time.
7. The fixed fire extinguishing system for the extra-high voltage converter substation according to claim 1, wherein each converter transformer is provided with two fire extinguishing devices to extinguish fire and backup the principle of temporarily protecting an adjacent converter transformer when an adjacent turbofan cannon fails.
8. The fixed fire suppression system for an extra-high voltage converter substation according to claim 1, wherein each of said turbofan cannons is configured to protect a plurality of converter transformers, and wherein if said turbofan cannon receives a plurality of converter transformer fire signals it protects at the same time, said turbofan cannon will only receive one of the converter transformer fire signals for operation.
9. The fixed fire extinguishing system for the extra-high voltage converter substation according to claim 1, wherein the control module further has a remote manual mode and a wireless remote sensing operation mode for equipment debugging and periodic maintenance, when the remote manual mode is switched, the control computer receives an allocation instruction of an operator and forwards the allocation instruction to the fire control room control cabinet, the fire control room control cabinet controls the corresponding turbofan cannon control cabinet to perform fire extinguishing operation according to the allocation instruction, and when the wireless remote sensing control mode is switched, the control computer receives a corresponding transformer power-off signal and then wirelessly remotely senses the corresponding turbofan cannon control cabinet to perform fire extinguishing operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111481244.2A CN114042276A (en) | 2021-12-06 | 2021-12-06 | Fixed fire extinguishing system for extra-high voltage converter substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111481244.2A CN114042276A (en) | 2021-12-06 | 2021-12-06 | Fixed fire extinguishing system for extra-high voltage converter substation |
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| Publication Number | Publication Date |
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| CN114042276A true CN114042276A (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111481244.2A Pending CN114042276A (en) | 2021-12-06 | 2021-12-06 | Fixed fire extinguishing system for extra-high voltage converter substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115634407A (en) * | 2022-10-11 | 2023-01-24 | 上海同泰火安科技有限公司 | Simulation system for fire extinguishing test of converter valve hall |
-
2021
- 2021-12-06 CN CN202111481244.2A patent/CN114042276A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115634407A (en) * | 2022-10-11 | 2023-01-24 | 上海同泰火安科技有限公司 | Simulation system for fire extinguishing test of converter valve hall |
| CN115634407B (en) * | 2022-10-11 | 2023-09-26 | 上海同泰火安科技有限公司 | Simulation system for fire extinguishing test of converter valve hall |
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