CN113750406A - Fire extinguishing simulation device and method for true transformer fire - Google Patents
Fire extinguishing simulation device and method for true transformer fire Download PDFInfo
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- CN113750406A CN113750406A CN202111088334.5A CN202111088334A CN113750406A CN 113750406 A CN113750406 A CN 113750406A CN 202111088334 A CN202111088334 A CN 202111088334A CN 113750406 A CN113750406 A CN 113750406A
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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
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
- A62C31/07—Nozzles specially adapted for fire-extinguishing with two or more outlets for different media
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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
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C99/00—Subject matter not provided for in other groups of this subclass
- A62C99/0081—Training methods or equipment for fire-fighting
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
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Abstract
The invention discloses a fire extinguishing simulation device and method for a true transformer fire, which comprises the following steps: the system comprises a double fire extinguishing system, a fire extinguishing pipeline and a control module; the double fire extinguishing systems comprise a water mist fire extinguishing system and a foam fire extinguishing system; the water mist fire extinguishing system and the foam fire extinguishing system are both connected with a fire extinguishing pipeline through a pipeline selector switch, one end of the fire extinguishing pipeline is provided with fire extinguishing nozzles, and the fire extinguishing nozzles are arranged around the true transformer and face the true transformer; the control module controls and starts a foam fire extinguishing system to work in an area with open fire through a pipeline selector switch according to the acquired fire image and temperature data of the true transformer; and after the open fire disappears, the fire is switched to a water mist fire extinguishing system through a pipeline selector switch to be cooled. Adopt the fire extinguishing mode of the dual system coupling of thin water smoke fire extinguishing systems and foam fire extinguishing systems, and adopt one set of pipeline of putting out a fire, reduce the loaded down with trivial details nature of pipeline of putting out a fire.
Description
Technical Field
The invention relates to the technical field of fire protection and fire hazard of an electric power system, in particular to a fire extinguishing simulation device and method for a true transformer fire hazard.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Large transformers are typically oil-immersed power transformers, which are filled with tens or even hundreds of tons of insulating oil (transformer oil). If the transformer fails, the power grid in the whole area is broken down. Although the probability of fire occurring in the transformer is low, once the fire occurs for some reason, the safe and stable operation of the power grid is influenced. With the rapid increase of the voltage grade and the capacity of the power grid power transmission and transformation equipment, the advantages, the disadvantages and the reliability of the existing fire extinguishing technology and system equipment are verified through fire extinguishing tests. The development of a true transformer fire simulation test can provide scientific basis and guidance for the design and model selection of a transformer fire extinguishing system, power station construction, later maintenance and the like, and has great practical significance.
The existing transformer fire simulation is mainly based on a reduced-scale experiment platform, for example, the true transformer fire experiment simulation platform provided by chinese patent CN10882505A has at least the following defects: the overall structure is complex, the electric fire experiment is rough, a fire accident simulation experiment cannot be refined, and an effective fire extinguishing combination scheme is not provided by the system; in addition, the fire extinguishing system is complex, the number of pipelines is large, and the cost is high.
Disclosure of Invention
In order to solve the problems, the invention provides a fire extinguishing simulation device and method for a real transformer fire, a fire extinguishing mode of double-system coupling of a water mist fire extinguishing system and a foam fire extinguishing system is adopted, and the water mist fire extinguishing system and the foam fire extinguishing system adopt a set of fire extinguishing pipelines, so that the complexity of the fire extinguishing pipelines is reduced, and the fire extinguishing mode under the transformer fire can be simulated finely.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, the present invention provides a fire extinguishing simulation apparatus for a true transformer fire, comprising: the system comprises a double fire extinguishing system, a fire extinguishing pipeline and a control module;
the double fire extinguishing systems comprise a water mist fire extinguishing system and a foam fire extinguishing system; the water mist fire extinguishing system and the foam fire extinguishing system are both connected with a fire extinguishing pipeline through a pipeline selector switch, one end of the fire extinguishing pipeline is provided with fire extinguishing nozzles, and the fire extinguishing nozzles are arranged around the true transformer and face the true transformer;
the control module judges an open fire area according to the acquired fire image and temperature data of the true transformer, and the open fire area controls and starts the foam fire extinguishing system to work through the pipeline selector switch; and after the open fire is judged to disappear, the fire extinguishing system is switched to the water mist fire extinguishing system through the pipeline selector switch to cool.
As an alternative embodiment, the fire extinguishing nozzles are arranged in a multi-layer manner, wherein the upper layer, the middle layer and the lower layer are arranged, and each layer of fire extinguishing nozzles is independently started; the upper layer is used for extinguishing oil mist fire at the oil conservator of the true transformer; the middle layer is used for extinguishing the fire of the jet fire and the flowing fire; the lower layer is used for extinguishing oil tank fire at the oil tank of the vacuum transformer.
As an alternative embodiment, in the control module, the process of determining the open fire area according to the acquired fire image and the temperature data of the prototype transformer includes modifying the fire image obtained by the infrared thermal imaging according to the temperature data, and determining the open fire area according to the modified fire image.
As an alternative embodiment, the water mist fire extinguishing system comprises a water mist fire extinguishing system pump set and a water mist fire extinguishing system storage tank; the water mist fire extinguishing system pump set is connected with the water mist fire extinguishing system storage tank, and the water mist fire extinguishing system storage tank is connected with the pipeline change-over switch.
As an alternative embodiment, the foam fire extinguishing system comprises a foam fire extinguishing system pump set, a foam fire extinguishing system gas supply device, a foam fire extinguishing system storage tank and a bubble generator; the foam fire extinguishing system pump set and the foam fire extinguishing system air supply device are both connected to a foam fire extinguishing system storage tank, the foam fire extinguishing system storage tank is connected with a bubble generator, and the bubble generator is connected with a pipeline change-over switch.
As an alternative embodiment, the water mist fire suppression system and the foam fire suppression system adopt a set of fire extinguishing pipelines.
As an alternative embodiment, a fire wall is arranged around the true transformer, an oil storage pool is arranged at the true transformer, and the fire extinguishing nozzle is arranged in the range of the fire wall and is aligned with the oil storage pool.
As an alternative embodiment, temperature sensors and heat flow sensors are arranged at different positions around the true transformer for detecting the dynamic temperature during a fire and during a fire extinguishing process.
In an alternative embodiment, the fire extinguishing simulation device further comprises an infrared camera for acquiring fire images to identify changes in flame morphology.
As an alternative embodiment, the fire suppression system is not operated in areas where open fire is occurring, while the foam fire suppression system is operated in areas where no fire is occurring.
In a second aspect, the present invention provides a fire extinguishing simulation method using the fire extinguishing simulation apparatus for a true transformer fire according to the first aspect, including:
acquiring a fire image and temperature data of a true transformer after a simulated fire occurs;
judging an area with an open fire according to the fire image and the temperature data of the true transformer, and controlling and starting a foam fire extinguishing system to work in the area with the open fire through a pipeline selector switch;
and after the open fire is judged to disappear, switching to a water mist fire extinguishing system for cooling through a pipeline selector switch.
As an alternative embodiment, the process of simulating the occurrence of a fire comprises: ignition points are arranged at the high-voltage bushing on the true transformer main body, the oil conservator on the true transformer main body and the oil groove in the oil collecting pit so as to simulate the fire of flowing fire, jet fire, oil mist fire and oil groove fire.
Compared with the prior art, the invention has the beneficial effects that:
in the fire extinguishing simulation device for the fire of the real transformer, a double-system coupling fire extinguishing mode of a high-pressure water mist fire extinguishing system and a compressed air foam fire extinguishing system is adopted, and the high-pressure water mist fire extinguishing system and the compressed air foam fire extinguishing system adopt a set of fire extinguishing pipelines, so that the complexity of the pipelines of the fire extinguishing system is reduced, and the economy is improved.
In the fire extinguishing simulation device and method for the true transformer fire, firstly, the fire process is comprehensively evaluated based on infrared image data, fire infrared images of a temperature sensor and a heat flow sensor and temperature data, namely, a compressed air foam fire extinguishing system in a fire area is started to extinguish the fire according to the result of the open fire area obtained by judgment; after the open fire disappears, the compressed air foam fire extinguishing system is closed through the remote switch, and the high-pressure water mist fire extinguishing system is automatically switched to cool the true transformer; and when the compressed air foam fire extinguishing system in the fire area works, the area fire extinguishing system which does not have the fire does not work.
According to the fire extinguishing simulation device and method for the fire of the real transformer, fire extinguishment is performed for the fire in different forms such as oil mist fire, jet fire, flowing fire, oil groove fire and the like, the fire extinguishing spray heads are arranged in a multilayer mode with an upper layer, a middle layer and a lower layer, and the upper layer is responsible for extinguishing the oil mist fire at the position of an oil conservator at the top of the real transformer; the middle layer is responsible for protecting the true transformer body and is used for extinguishing the fire of jet fire and flowing fire; the lower layer is responsible for extinguishing oil tank fire after oil leakage occurs at the oil tank of the true transformer; the three layers of fire extinguishing nozzles can be respectively and independently started, the fire disasters at different parts of the transformer are fully considered, and the fire extinguishing nozzles play a role in different fire disasters.
In the fire extinguishing simulation device and the method for the fire of the real transformer, the fire extinguishing simulation device is carried out for the fire simulation of the real transformer, and a series of fire simulation fire extinguishing test researches are carried out for the real transformer at present, particularly for a large transformer, but the simulation and the fire extinguishing test of the three-dimensional fire of various forms are difficult to reproduce really. Therefore, when fire simulation is carried out, various forms of three-dimensional fire simulation are realized, and various forms of fire simulation such as flowing fire, oil tank fire, oil mist fire, jet fire and the like are realized through ignition points such as a high-voltage bushing on the true transformer main body, an oil conservator on the true transformer main body and an oil groove in an oil collecting pit, and the problem of a single ignition point form in the conventional transformer fire extinguishing test is also solved.
Advantages of additional aspects 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 accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Fig. 1 is a perspective fire simulation apparatus of a true transformer according to embodiment 1 of the present invention;
fig. 2 is a fire extinguishing simulation device for a true transformer fire according to embodiment 1 of the present invention;
FIG. 3 is a schematic diagram of a fire suppression sprinkler according to embodiment 1 of the present invention;
wherein, 1, a foam fire extinguishing system pump group; 2. a water mist fire extinguishing system pump set; 3. a water mist fire extinguishing system storage tank; 4. a foam fire extinguishing system gas supply device; 5. a foam fire suppression system storage tank; 6. a bubble generator; 7. a pipeline selector switch; 8. an oil storage pool; 9. a fire extinguishing pipeline; 10. a fire extinguishing nozzle; 11. a transformer oil tank; 12. a true transformer; 13. a firewall; 14. a waste liquid treatment tank.
Detailed Description
The invention is further described with reference to the following figures and examples.
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be understood that the terms "comprises" and "comprising", and any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example 1
The embodiment provides a fire extinguishing simulation device for true transformer fire, which comprises: the system comprises a double fire extinguishing system, a fire extinguishing pipeline and a control module;
the double fire extinguishing systems comprise a water mist fire extinguishing system and a foam fire extinguishing system; the water mist fire extinguishing system and the foam fire extinguishing system are both connected with a fire extinguishing pipeline through a pipeline selector switch, one end of the fire extinguishing pipeline is provided with fire extinguishing nozzles, and the fire extinguishing nozzles are arranged around the true transformer and face the true transformer;
the control module judges an open fire area according to the acquired fire image and temperature data of the true transformer, and the open fire area controls and starts the foam fire extinguishing system to work through the pipeline selector switch; and after the open fire is judged to disappear, the fire extinguishing system is switched to the water mist fire extinguishing system through the pipeline selector switch to cool.
In the present embodiment, the fire extinguishing simulation apparatus is performed for fire simulation of a real transformer, and although a series of fire simulation fire extinguishing tests have been conducted for real transformers, especially for large transformers, simulation and fire extinguishing tests of various types of three-dimensional fires are difficult to reproduce truly. Therefore, in the embodiment, during fire simulation, various forms of three-dimensional fire simulation are realized, and refined simulation of true transformer fire caused by different factors is performed, such as flowing fire around the true transformer, oil groove fire, splashing fire of a transformer conservator and transformer bushing fire, and transformer fire scenes under different environmental wind speeds can be simulated, and each form of fire is designed according to the size of the true transformer, so that the real scene of the transformer during fire can be truly simulated.
As shown in fig. 1, the three-dimensional fire simulation device of the true transformer is characterized in that an ignition position is arranged at a high-voltage bushing on a true transformer main body, an oil conservator on the true transformer main body, an oil groove in an oil collecting pit and the like, and the ignition form comprises flowing fire, oil groove fire, oil mist fire, jet fire and the like;
for example, an ignition point is arranged between the oil conservator and the high-voltage bushing, and the ignition point is used for simulating the ignition of oil mist fire; the ignition point arranged at the oil conservator is used for simulating flowing fire and explosion and leakage fire of transformer oil, and oil can be sprayed to the outer surface of the main oil tank by adjusting the oil conservator control valve to form an oil spill fire; an ignition point is provided at the sump for simulating ignition of the sump fire.
The following exemplary simulation procedures are given for several fires:
when the flow fire of the simulation true transformer occurs: simulating a flowing fire and an explosion and leakage fire ignition point of transformer oil at the position of a true transformer conservator;
the conservator plays a role in regulating transformer oil, oil is sprayed to the outer surface of the main oil tank through a manual control valve on the regulating conservator to form an oil spilling fire, the flow and the flow rate of the transformer oil are regulated before an ignition test, and the oil spraying amount and the flow rate are ensured, wherein the speed is not less than 20-40L/min.
A 20 cm-deep oil pan is arranged at the height of the high-voltage bushing base 1/3, 10 cm-deep transformer oil is added into the high-voltage bushing base, an electric heating mode is arranged at the bottom of the high-voltage bushing base for heating the transformer oil, and meanwhile, a temperature sensor is arranged for measuring the real-time temperature of the transformer oil; when the oil temperature exceeds 90 ℃, gas open fire is adopted to jet and ignite the oil pan fire at a short distance, hot oil is pumped to an overflow port of the oil pan through the bottom of the oil pan after pre-burning for 30 seconds, and flowing fire is formed along the top of the transformer and directly flows into an accident oil pool; wherein the oil supply amount (the minimum oil supply amount is calculated) is required to ensure that the oil pumping is stopped after the flame is completely extinguished, and the suck-back is prevented.
When a full-scale fire disaster occurs in the simulation transformer: according to the fire characteristics of the transformer, a transformer fire model arranged in the spray fire extinguishing system of the transformer adopts a 220kV waste transformer, the external dimension of the transformer is about 4500mm (length) × 3000mm (width) × 4700mm (height), a test oil pan with the length × width × height of 500mm (length) × 400mm (width) × 300mm (height) is used as a fire source point, an external fire source point 15 is arranged and respectively arranged at 2 transformer oil conservators, 5 transformer tops, 8 transformer bodies and a radiator, and various types of fire such as flowing, hiding, multiple points and the like outside the transformer are simulated to extinguish fire;
surface flowing fire and multiple ignition are arranged at the top of the transformer, oil pan fire is adopted for simulation, and the total area of the oil pan is 1.2m 2; the explosion leakage fire is positioned at the oil conservator and is simulated by oil mist fire, the spraying angle of an oil mist nozzle is 120-125 degrees, the oil pressure in front of the nozzle is 0.8MPa, the flow is 0.16kg/s, and the oil mist is sprayed in the horizontal direction; hidden fire is positioned at the bottom of the transformer (under the shielding of radiating fins), and oil pan fire is adopted for simulation, wherein the total area of an oil pan is 8.8m 2; the test fuel oil was 10# kramay transformer oil (diesel oil for oil mist fire).
The transformer oil of the oil tray is preheated by adopting an electric heating facility, the transformer oil is heated to the working temperature of the transformer, auxiliary heating facilities such as a flame gun are added to heat the oil to the position near a burning point, each small oil basin is heated for about 40min, the heating time of an oil discharging and nitrogen injecting oil tank is about 2.5h, then a little gasoline is added into the oil tank, the manual remote electronic ignition is carried out, the ignition sequence is that the oil tray of an oil conservator, the oil tank of a transformer body, the oil tray at the top of the transformer and the ground oil tray at the lower part around the transformer, and the test is started after the oil and fire are pre-burned for 180 s.
In the embodiment, in order to obtain data of the true transformer in a fire, temperature sensors and heat flow sensors are arranged at different positions around the true transformer body and are used for detecting dynamic temperatures in the fire process and the fire extinguishing process; meanwhile, according to the test requirements, a dynamic image sensor (CCD) or a camera or an infrared camera is adopted to obtain fire images so as to identify the flame form change.
In this embodiment, as shown in fig. 2, a fire extinguishing test is performed by using a dual fire extinguishing system coupling mode of a high-pressure water mist fire extinguishing system and a compressed air foam fire extinguishing system.
The water mist fire extinguishing system comprises a water mist fire extinguishing system pump set 2 and a water mist fire extinguishing system storage tank 3; the water mist fire extinguishing system pump set 2 is connected with the water mist fire extinguishing system storage tank 3, and the water mist fire extinguishing system storage tank 3 is connected with the pipeline change-over switch 7.
The foam fire extinguishing system comprises a foam fire extinguishing system pump unit 1, a foam fire extinguishing system air supply device 4, a foam fire extinguishing system storage tank 5 and a bubble generator 6; foam fire extinguishing systems pump package 1 and foam fire extinguishing systems air feeder 4 all are connected to foam fire extinguishing systems storage tank 5, and foam fire extinguishing systems storage tank 5 is connected with bubble generator 6, and bubble generator 6 is connected with pipeline change over switch 7.
The bubble generator preferably adopts a CAF aerator, a micro-bubble generator, a micro-nano bubble generator and the like, and a person skilled in the art can select the specific model of the bubble generator according to actual requirements without limitation.
In this embodiment, the fire extinguishing line 9 is connected to the line switching switch 7 at one end and to the fire extinguishing nozzle 10 at the other end.
In this embodiment, the high-pressure water mist system and the compressed air foam fire extinguishing system adopt one set of fire extinguishing pipeline, so that the complexity of the fire extinguishing system pipeline is reduced, and the economy is improved.
In the present embodiment, the fire extinguishing nozzle 10 is disposed around the vacuum transformer 12 and is disposed toward the vacuum transformer 12; the fire-proof wall is arranged around the real transformer 12, the oil storage pool is arranged at the real transformer 12, and the fire-extinguishing nozzle 10 is arranged in the range of the fire-proof wall, namely the spraying range of the fire-extinguishing nozzle 10 is in the range of the fire-proof wall and is aligned to the oil storage pool.
As shown in fig. 3, the fire-extinguishing nozzle of the embodiment adopts a multi-layer arrangement of an upper layer, a middle layer and a lower layer, wherein the upper layer is responsible for fire extinguishing by a conservator on the top of a transformer; the middle layer is responsible for protecting the transformer body and is used for extinguishing jet fire and flowing fire; the lower layer is responsible for oil groove fire after transformer oil leaks.
The shower nozzle design of this embodiment is according to having developed the experiment, and the three-layer shower nozzle of putting out a fire can independently start respectively, has fully considered the conflagration at the different positions of transformer, plays a role to different conflagrations.
It is understood that the true transformer 12 is further configured with a transformer tank 11, a waste liquid treatment tank 14, etc., and those skilled in the art may add the transformer tank and the waste liquid treatment tank according to actual needs, and the details are not described herein.
In the embodiment, fire infrared images and temperature data acquired by an infrared camera, a temperature sensor and a heat flow sensor are acquired;
preferably, the open fire area is judged according to the fire infrared image, and the fire infrared image of the infrared thermal imaging is corrected according to the temperature data; because normal infrared thermal imager needs to carry out radiance factor's calibration at the shooting in-process, the data calibration of infrared thermal imager can be assisted in the measurement of temperature data, and the judgement to whether there is open fire after the calibration will be more accurate.
The control module comprehensively evaluates the fire process according to the fire infrared image and the temperature data, and controls and starts the foam fire extinguishing system to extinguish the open fire through the pipeline selector switch in the open fire area;
it is noted that while the compressed air foam fire suppression system is operating in a fire area, the fire suppression system is not operating in areas where a fire is not occurring.
According to the infrared image and the temperature data of the fire disaster acquired in real time, after the control module detects that the open fire disappears, the compressed air foam fire extinguishing system is closed through switching of the pipeline selector switch, and the compressed air foam fire extinguishing system is switched to the water mist fire extinguishing system for cooling.
The embodiment can develop fire simulation experiments under different fire mechanisms, cover the fire scenes of all the transformers at present and simulate the fire scenes of any transformer; simultaneously, an accurate fire extinguishing system scheme is provided for transformer fires in different forms, and different fire extinguishing systems adopt the same set of fire extinguishing pipelines, so that an economical scheme is provided for practical application.
The fire extinguishing simulation experiment platform for the true transformer three-dimensional fire can truly reproduce the transformer three-dimensional fire, truly simulate the actual situation of the transformer fire, overcome the existing transformer or the single ignition point in the test, can be used for the fire extinguishing performance test of fire extinguishing systems of different forms, and solve the stage fire extinguishing scheme for realizing the true transformer fire by using the same set of pipeline.
In further embodiments, with the fire extinguishing simulation apparatus for a true transformer fire described above, there is provided a fire extinguishing simulation method including:
acquiring a fire image and temperature data of a true transformer after a simulated fire occurs;
judging an area with an open fire according to the fire image and the temperature data of the true transformer, and controlling and starting a foam fire extinguishing system to work in the area with the open fire through a pipeline selector switch;
and after the open fire is judged to disappear, switching to a water mist fire extinguishing system for cooling through a pipeline selector switch.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A fire extinguishing simulation device for a true transformer fire, comprising: the system comprises a double fire extinguishing system, a fire extinguishing pipeline and a control module;
the double fire extinguishing systems comprise a water mist fire extinguishing system and a foam fire extinguishing system; the water mist fire extinguishing system and the foam fire extinguishing system are both connected with a fire extinguishing pipeline through a pipeline selector switch, one end of the fire extinguishing pipeline is provided with fire extinguishing nozzles, and the fire extinguishing nozzles are arranged around the true transformer and face the true transformer;
the control module judges an open fire area according to the acquired fire image and temperature data of the true transformer, and the open fire area controls and starts the foam fire extinguishing system to work through the pipeline selector switch; and after the open fire is judged to disappear, the fire extinguishing system is switched to the water mist fire extinguishing system through the pipeline selector switch to cool.
2. The fire extinguishing simulation device for the true transformer fire according to claim 1, wherein the fire extinguishing nozzles are arranged in a multi-layer manner of an upper layer, a middle layer and a lower layer, and each layer of fire extinguishing nozzles is independently started; the upper layer is used for extinguishing oil mist fire at the oil conservator of the true transformer; the middle layer is used for extinguishing the fire of the jet fire and the flowing fire; the lower layer is used for extinguishing oil tank fire at the oil tank of the vacuum transformer.
3. The fire extinguishing simulation device for a true transformer fire according to claim 1, wherein the determining of the open fire area in the control module according to the acquired fire image and temperature data of the true transformer comprises correcting the fire image obtained based on the infrared thermal imaging according to the temperature data, and determining the open fire area according to the corrected fire image.
4. The fire suppression simulator for a true transformer fire of claim 1, wherein the water mist fire suppression system comprises a water mist fire suppression system pump set and a water mist fire suppression system storage tank; the water mist fire extinguishing system pump set is connected with a water mist fire extinguishing system storage tank, and the water mist fire extinguishing system storage tank is connected with a pipeline switch;
the foam fire extinguishing system comprises a foam fire extinguishing system pump set, a foam fire extinguishing system air supply device, a foam fire extinguishing system storage tank and a bubble generator; the foam fire extinguishing system pump set and the foam fire extinguishing system air supply device are both connected to a foam fire extinguishing system storage tank, the foam fire extinguishing system storage tank is connected with a bubble generator, and the bubble generator is connected with a pipeline change-over switch.
5. The fire extinguishing simulation device for a true transformer fire according to claim 1, wherein the water mist fire extinguishing system and the foam fire extinguishing system employ a set of fire extinguishing pipes.
6. The fire extinguishing simulation device for the real transformer fire disaster as claimed in claim 1, wherein a fire wall is provided around the real transformer, an oil storage pool is provided at the real transformer, and the fire extinguishing nozzle is provided within the range of the fire wall and aligned with the oil storage pool.
7. The fire extinguishing simulation device for the real transformer fire, according to claim 1, wherein the temperature sensors and the heat flow sensors are arranged at different positions around the real transformer for detecting the dynamic temperature during the fire and during the fire extinguishing.
8. The fire suppression simulation apparatus for a true transformer fire according to claim 1, further comprising an infrared camera for acquiring an image of the fire.
9. A fire extinguishing simulation method using the fire extinguishing simulation apparatus for a true transformer fire according to any one of claims 1 to 8, comprising:
acquiring a fire image and temperature data of a true transformer after a simulated fire occurs;
judging an area with an open fire according to the fire image and the temperature data of the true transformer, and controlling and starting a foam fire extinguishing system to work in the area with the open fire through a pipeline selector switch;
and after the open fire is judged to disappear, switching to a water mist fire extinguishing system for cooling through a pipeline selector switch.
10. A fire suppression simulation method according to claim 9, wherein the process of simulating the occurrence of a fire comprises: ignition points are arranged at the high-voltage bushing on the true transformer main body, the oil conservator on the true transformer main body and the oil groove in the oil collecting pit so as to simulate the fire of flowing fire, jet fire, oil mist fire and oil groove fire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111088334.5A CN113750406A (en) | 2021-09-16 | 2021-09-16 | Fire extinguishing simulation device and method for true transformer fire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111088334.5A CN113750406A (en) | 2021-09-16 | 2021-09-16 | Fire extinguishing simulation device and method for true transformer fire |
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| CN114155760A (en) * | 2021-12-21 | 2022-03-08 | 北京南瑞怡和环保科技有限公司 | Transformer fire experiment platform |
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| CN114984502A (en) * | 2022-06-02 | 2022-09-02 | 郑州轻工业大学 | Transformer high-pressure water mist fire extinguishing test system and working method thereof |
| 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 |
| CN115154972A (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 | Dry powder and foam combined interaction mechanism test platform and test method |
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| RU2820243C1 (en) * | 2023-06-15 | 2024-05-31 | ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ БЮДЖЕТНОЕ УЧРЕЖДЕНИЕ "ВСЕРОССИЙСКИЙ ОРДЕНА "ЗНАК ПОЧЕТА" НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ ИНСТИТУТ ПРОТИВОПОЖАРНОЙ ОБОРОНЫ МИНИСТЕРСТВА РОССИЙСКОЙ ФЕДЕРАЦИИ ПО ДЕЛАМ ГРАЖДАНСКОЙ ОБОРОНЫ, ЧРЕЗВЫЧАЙНЫМ СИТУАЦИЯМ И ЛИКВИДАЦИИ ПОСЛЕДСТВИЙ СТИХИЙНЫХ БЕДСТВИЙ" (ФГБУ ВНИИПО МЧС России) | Experimental stand for research of fire extinguishing efficiency of liquid compositions used for aviation forest fire extinguishing |
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| CN114984502A (en) * | 2022-06-02 | 2022-09-02 | 郑州轻工业大学 | Transformer high-pressure water mist fire extinguishing test system and working method thereof |
| 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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