CN112451874A - Safety protection device for oil-immersed transformer fire resistance test - Google Patents
Safety protection device for oil-immersed transformer fire resistance test Download PDFInfo
- Publication number
- CN112451874A CN112451874A CN202011242130.8A CN202011242130A CN112451874A CN 112451874 A CN112451874 A CN 112451874A CN 202011242130 A CN202011242130 A CN 202011242130A CN 112451874 A CN112451874 A CN 112451874A
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- fire
- oil
- partition
- resistance test
- partition wall
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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
- A62C3/06—Fire prevention, containment or extinguishing specially adapted for particular objects or places of highly inflammable material, e.g. light metals, petroleum products
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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
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
Abstract
The invention relates to a safety protection device for a fire resistance test of an oil-immersed transformer, which comprises a first fire partition wall, a second fire partition wall, a third fire partition wall and a fourth fire partition wall, wherein the first fire partition wall and the second fire partition wall are oppositely arranged, the third fire partition wall and the fourth fire partition wall are oppositely arranged, the first fire partition wall, the third fire partition wall, the second fire partition wall and the fourth fire partition wall sequentially surround to form a test area for the fire resistance test of the oil-immersed transformer, the first fire partition wall and the second fire partition wall are respectively provided with a louver communicated with the test area, and a plurality of louver plates which are sequentially arranged in parallel from top to bottom and are obliquely arranged downwards. The shutter type fire partition can reduce the fire explosion danger in the fire resistance test process of the transformer, can fully ensure the oxygen supply in the test process, enables the test area to be communicated with the outside air, ensures the full air entrainment in the test process, enables the air entrainment to be closer to the simulation of the real fire scene of the transformer, and enables the test result to be more accurate.
Description
Technical Field
The invention relates to the technical field of oil immersed transformer research, in particular to a safety protection device for a fire resistance test of an oil immersed transformer.
Background
At present, most transformers operated by a power grid are oil-immersed transformers, mineral oil with a low ignition point is mainly used as an insulating cooling medium, and meanwhile, oil-immersed transformers using natural ester vegetable oil as the insulating cooling medium are continuously researched and developed. Although the transformer oil belongs to combustible materials, the transformer oil is not flammable and explosive, and when serious overload, short circuit and insulation damage exist inside the transformer oil or the transformer is exposed to fire outside the transformer, transformer accidents finally become serious fire and explosion, and even large-area spread of disasters can be caused. Therefore, in order to verify the fire resistance stability of the transformer, a true type of transformer fire simulation test is generally conducted. When an oil-immersed transformer external fire source simulation test is carried out in the prior art, an explosion-proof wall is usually constructed to ensure the safety of the test process, but the test is obviously insufficient, and the solid wall around the simulation test scene can effectively reduce the danger of the transformer in the fire explosion process, but can also interfere the air entrainment in the fire simulation process, so that the deviation exists between the simulation test scene and the real fire scene of the transformer, and the accuracy of the test result is influenced.
Disclosure of Invention
The invention aims to provide a safety protection device for a fire resistance test of an oil-immersed transformer, which can be communicated with outside air, ensures sufficient air entrainment in the test process and ensures that the test result is more accurate.
In order to realize the purpose of the invention, the technical scheme is as follows:
the utility model provides an oily formula transformer fire resistance test's safety device, including relative first fire compartment wall and the second fire compartment wall that sets up, relative third fire compartment wall and the fourth fire compartment wall that sets up, first fire compartment wall, third fire compartment wall, second fire compartment wall and fourth fire compartment wall center on in proper order forming the experimental district that is used for oily formula transformer fire resistance test, first fire compartment wall and second fire compartment wall all are equipped with the shutter that communicates with experimental district, it has many louver boards that from top to bottom parallel arrangement and downward sloping set up in proper order to arrange in the shutter.
First fire compartment and second fire compartment have all set up the shutter with the test area intercommunication, arrange many shutter plates from top to bottom parallel arrangement in proper order on the shutter, this shutter type fire compartment can reduce the conflagration explosion danger among the transformer fire resistance test process, can fully guarantee the oxygen supply among the test process simultaneously, make test area and external gas communicate with each other, guaranteed that abundant air entrainment among the test process makes it comparatively close to simulate real transformer conflagration scene, make the test result more accurate.
The technical scheme is further explained as follows:
further, the safety protection device for the oil-immersed transformer fire resistance test further comprises a fireproof cover in one-to-one correspondence with the louver, the fireproof cover covers the corresponding louver and is located on one side, back to the test area, of the louver, and a ventilation opening is formed in the bottom of the fireproof cover. The shutter is covered with a fireproof cover with an open lower part, so that the test process is not interfered by external wind, and the test accuracy is further improved.
Furthermore, the fireproof cover is made of tempered fireproof glass. The circulation condition of air is more convenient to observe, and real-time monitoring is carried out.
Further, the third fire-barrier and the fourth fire-barrier are both located outside the first fire-barrier and the second fire-barrier, and are both spaced apart from the first fire-barrier and the second fire-barrier. The four sides fire partition wall interval formula distributes, has both guaranteed that the abundant air entrainment of test process has restrained the interference effect of environmental wind to test process again, further improves experimental accuracy.
Furthermore, a first fireproof cofferdam and a second fireproof cofferdam which are oppositely arranged are connected between the first fireproof partition wall and the second fireproof partition wall, and the oil-immersed transformer is placed between the first fireproof cofferdam and the second fireproof cofferdam. Two fireproof cofferdams are additionally arranged between the first fireproof partition wall and the second fireproof partition wall, so that even if oil of the transformer leaks and flows to burn in the test process, the danger of the oil of the transformer is still limited in a certain space, the oil of the transformer is prevented from leaking and flowing to cause large-area spreading of fire in the test process, secondary accidents are prevented from being caused, and the test safety is improved.
Furthermore, one of the third fire-proof partition wall and the fourth fire-proof partition wall is provided with an observation window, and toughened fire-proof glass is additionally arranged on the observation window. On the basis of the safety test, the experimental process can be monitored, observed and recorded in real time.
Furthermore, the safety protection device for the oil immersed transformer fire resistance test further comprises a foam fire extinguishing system for extinguishing fire in the test area and a controller for controlling the foam fire extinguishing system to be opened or closed, and the foam fire extinguishing system comprises a foam fire pump, a foam liquid storage tank, a mixer and a foam generating device which are communicated through pipelines. If an out-of-control fire phenomenon occurs or the test needs to be stopped in advance in the test process, the foam fire extinguishing system is remotely started through the controller to extinguish fire, emergency treatment of accidents in the test process is guaranteed, and the test safety is improved.
Further, oil-immersed transformer fire resistance test's safety device still includes high-pressure squirt cleaning system and controller, and high-pressure squirt cleaning system cleans the shower nozzle including locating the high pressure on first fire compartment wall and the second fire compartment wall, and the opening or closing of shower nozzle is cleaned to the steerable high pressure of controller. The high-pressure water gun cleaning system can realize all-dimensional cleaning of the ground of the test platform, avoids interference of residual combustible oil products on the next test, and ensures the reutilization of the test platform.
Further, oily formula transformer fire resistance test's safety device still includes waste liquid recovery system, and waste liquid recovery system is including being located the convex ground in the test area, around the waste liquid backward flow groove that convex ground periphery set up, locate the drainage well head in the waste liquid backward flow groove, and cover the well head on the drainage well head, and the controller that steerable well head lid was opened or was closed. Drainage well lid is in the closed condition among the test process, prevents to trickle fire and spreads to the drainage well and lead to the intensity of a fire to enlarge, opens drainage well lid through controller remote control after experimental completion and putting out a fire, and protruding type ground can make the liquid material flow to the drainage well after foam extinguishing agent and the cleaning, realizes the quick collection to the waste liquid, carries out subsequent waste liquid treatment.
Further, first fire compartment wall, second protection partition wall, third fire compartment wall, fourth fire compartment wall and shutter plate are the muddy earth material. The safety factor of the test is improved.
Compared with the prior art, the invention has the following beneficial effects:
the first fire partition wall and the second fire partition wall are both provided with the louver which is communicated with the test area, and the louver is provided with the plurality of louver plates which are sequentially arranged in parallel from top to bottom.
Drawings
FIG. 1 is a schematic diagram of a first structure of a safety protection device for a fire resistance test of an oil-immersed transformer according to an embodiment of the invention;
FIG. 2 is a view taken along line A of FIG. 1;
fig. 3 is a view from direction B of fig. 1.
Description of reference numerals:
110. the fire-fighting system comprises a first fire-proof partition, 120, a second fire-proof partition, 130, a third fire-proof partition, 140, a fourth fire-proof partition, 141, an observation window, 150, a louver window, 151, a louver board, 160, a partition, 20, a fire-proof cover, 210, a vent, 310, a first fire-proof cofferdam, 320, a second fire-proof cofferdam, 330, a closed area, 40, an oil-immersed transformer, 50, a transformer bracket, 60, a foam fire-extinguishing system, 70, a high-pressure cleaning spray head and 80, and a waste liquid return tank.
Detailed Description
Embodiments of the present invention are described in detail below with reference to the accompanying drawings:
as shown in fig. 1 to 3, a safety protection device for a fire resistance test of an oil-immersed transformer includes a first fire-proof partition wall 110 and a second fire-proof partition wall 120 which are oppositely arranged, a third fire-proof partition wall 130 and a fourth fire-proof partition wall 140 which are oppositely arranged, the first fire-proof partition wall 110, the third fire-proof partition wall 130, the second fire-proof partition wall 120 and the fourth fire-proof partition wall 140 sequentially surround a test area for the fire resistance test of the oil-immersed transformer, the first fire-proof partition wall 110 and the second fire-proof partition wall 120 are both provided with a louver 150 communicated with the test area, and a plurality of louver plates 151 which are sequentially arranged in parallel from top to bottom and are obliquely arranged downwards are arranged in the louver 150.
In this embodiment, the first fire-proof partition 110, the second protective partition, the third fire-proof partition 130, the fourth fire-proof partition 140 and the louver boards 151 are all made of concrete, so as to improve the safety factor of the test. The first fire-proof partition 110, the second fire-proof partition, the third fire-proof partition 130, the fourth fire-proof partition 140 and the louver boards 151 may be made of other materials according to actual needs.
As shown in fig. 1 and fig. 3, the safety protection device for the oil-immersed transformer fire resistance test further includes fire prevention covers 20 corresponding to the louvers 150, the fire prevention covers 20 are fixed on the fire prevention partition, the fire prevention covers 20 cover the corresponding louvers 150 and are located on one side of the louvers 150 opposite to the test area, and the bottom of the fire prevention covers 20 is provided with a vent 210. The lower part of the shutter 150 is covered with the fireproof cover 20 with an open lower part, so that the test process is not interfered by external wind, and the test accuracy is further improved.
In this embodiment, the fire prevention cover 20 is the tempering fire prevention glass material, is more convenient for observe the circulation condition of air, monitors in real time. Other materials can be adopted for the fireproof cover 20 according to actual needs.
As shown in fig. 1, the third and fourth fire walls 130 and 140 are located outside the first and second fire walls 110 and 120, and have a space 160 between them and the first and second fire walls 110 and 120. The four sides fire partition wall interval formula distributes, has both guaranteed that the abundant air entrainment of test process has restrained the interference effect of environmental wind to test process again, further improves experimental accuracy.
As shown in fig. 1, a first fireproof cofferdam 310 and a second fireproof cofferdam 320 are connected between the first fireproof partition 110 and the second fireproof partition 120, the first fireproof cofferdam 310 and the second fireproof cofferdam 320, the first fireproof cofferdam 110 and the second fireproof partition 120 are oppositely arranged, so as to form a closed area 330, the oil-immersed transformer 40 and the transformer bracket 50 are placed in the closed area 330, so that the oil-immersed transformer 40 is higher than the first fireproof cofferdam 310 and the second fireproof cofferdam 320, thereby ensuring that even if oil of the transformer leaks and flows to burn in the test process, the danger of the oil is still limited in a certain space, preventing the oil of the transformer from leaking and flowing in the test process to cause large-area spreading of fire, preventing secondary accidents, and improving the safety of the test.
As shown in fig. 2, in this embodiment, an observation window 141 is disposed on the fourth firewall 140, a tempered fire-proof glass is additionally installed on the observation window 141, and the observation window 141 can observe that the whole test area includes the oil-immersed transformer 40, the first firewall 110, the second firewall 120, the first fire-proof cofferdam 310, the second fire-proof cofferdam 320, and the like, so that on the basis of a safety test, the test process can be monitored, observed, and recorded in real time. The safety protection device may further include a viewing window 141 on the third fire-barrier 130 according to actual needs.
As shown in fig. 1, the safety protection device for the fire resistance test of the oil immersed transformer further includes a foam fire extinguishing system 60 for extinguishing a fire in the test area, and a controller (not shown in the figure) for controlling the foam fire extinguishing system 60 to be opened or closed, wherein the foam fire extinguishing system 60 includes a foam fire pump, a foam liquid storage tank, a mixer and a foam generating device which are communicated through a pipeline. If an out-of-control fire phenomenon occurs or the test needs to be stopped in advance in the test process, the foam fire extinguishing system 60 is remotely started through the controller to extinguish fire, so that emergency treatment of accidents in the test process is guaranteed, and the test safety is improved.
In this embodiment, as shown in fig. 1, the nozzles of the fire foam extinguishing system 60 are disposed in the space 160 between the fourth fire-protecting partition 140 and the first and second fire-protecting partitions 110 and 120, and the nozzles can be rotated to achieve full coverage of the fire field with the fire foam, thereby further improving the safety of the fire test. The foam fire suppression system 60 may also be located in other locations as desired.
As shown in fig. 1 and fig. 2, the safety protection device for the fire resistance test of the oil-immersed transformer further includes a high-pressure water gun cleaning system, the high-pressure water gun cleaning system includes high-pressure cleaning nozzles 70 disposed on the first fire partition 110 and the second fire partition 120, and the controller may control the opening or closing of the high-pressure cleaning nozzles 70. The high-pressure water gun cleaning system can realize all-dimensional cleaning of the ground of the test platform, avoids interference of residual combustible oil products on the next test, and ensures the reutilization of the test platform.
In this embodiment, three high-pressure cleaning nozzles 70 are respectively disposed on the first fire partition 110 and the second fire partition 120, the high-pressure cleaning nozzles 70 are high-temperature resistant nozzles, the pressure is up to 7MPa, the test platform ground can be dynamically swept in all directions, the high-pressure cleaning nozzles 70 can also be in other forms according to actual needs, and can also be disposed in other positions and in other quantities according to actual needs.
As shown in fig. 1, the safety protection device for the oil-immersed transformer fire resistance test further comprises a waste liquid recovery system, the waste liquid recovery system comprises a convex ground (not marked in the attached drawing) positioned in the test area, a waste liquid reflux groove 80 arranged around the periphery of the convex ground, a drainage wellhead (not marked in the attached drawing) arranged in the waste liquid reflux groove 80, and a wellhead cover (not marked in the attached drawing) covering the drainage wellhead, and the controller can control the wellhead cover to be opened or closed. Drainage well lid is in the closed condition among the test process, prevents to trickle fire and spreads to the drainage well and lead to the intensity of a fire to enlarge, opens drainage well lid through controller remote control after experimental completion and putting out a fire, and protruding type ground can make the liquid material flow to the drainage well after foam extinguishing agent and the cleaning, realizes the quick collection to the waste liquid, carries out subsequent waste liquid treatment.
The safety protection device for the fire resistance test of the oil-immersed transformer can be used for an external fire resistance simulation test of the oil-immersed transformer, and the fireproof partition wall has the functions of preventing splashing, explosion, fire prevention and oil blocking of oil splashing, transformer part explosion and continuous fire leakage of the transformer and is also communicated with external gas, so that sufficient air entrainment in the fire test process is ensured. The design of the four-side fire partition wall in a staggered mode effectively weakens the interference of external wind to the test process while ensuring air supply. And the design of the fireproof glass of the front fireproof partition wall can ensure real-time recording and safety protection in the experimental process. The foam fire suppression system 60 is configured to ensure effective intervention in the event of any emergency condition during the test. Meanwhile, the high-pressure cleaning and waste liquid recovery system can ensure that the test platform is clean, and the reusable requirement of the platform is met.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The utility model provides an oil-immersed transformer fire resistance test's safety device, its characterized in that, including relative first fire compartment wall and the second fire compartment wall that sets up, relative third fire compartment wall and the fourth fire compartment wall that sets up, first fire compartment wall third fire compartment wall second fire compartment wall with fourth fire compartment wall centers on in proper order forming the experimental district that is used for oil-immersed transformer fire resistance test, first fire compartment wall with second fire compartment wall all be equipped with the shutter of experimental district intercommunication, arrange many louver boards that from top to bottom parallel arrangement and downward sloping set up in proper order in the shutter.
2. The safety protection device for the fire resistance test of the oil-immersed transformer according to claim 1, further comprising a fire prevention cover in one-to-one correspondence with the louver, wherein the fire prevention cover covers the corresponding louver and is located on one side, back to the test area, of the louver, and a vent is formed in the bottom of the fire prevention cover.
3. The safety device for the oil-filled transformer fire resistance test according to claim 2, wherein the fireproof cover is made of tempered fireproof glass.
4. The oil-filled transformer fire resistance test safety protection device according to claim 1, wherein the third fire partition and the fourth fire partition are located outside the first fire partition and the second fire partition, and are spaced apart from the first fire partition and the second fire partition.
5. The safety protection device for the fire resistance test of the oil-immersed transformer according to claim 4, wherein a first fire-proof cofferdam and a second fire-proof cofferdam which are oppositely arranged are connected between the first fire-proof partition and the second fire-proof partition, and the oil-immersed transformer is placed between the first fire-proof cofferdam and the second fire-proof cofferdam.
6. The safety protection device for the fire resistance test of the oil-filled transformer according to claim 1, wherein one of the third fire partition and the fourth fire partition is provided with an observation window, and the observation window is additionally provided with tempered fire-proof glass.
7. The safety protection device for the fire resistance test of the oil immersed transformer according to any one of claims 1 to 6, further comprising a foam fire extinguishing system for extinguishing fire in the test area, and a controller for controlling the on or off of the foam fire extinguishing system, wherein the foam fire extinguishing system comprises a foam fire pump, a foam liquid storage tank, a mixer and a foam generating device which are communicated through pipelines.
8. The safety protection device for the fire resistance test of the oil-immersed transformer according to any one of claims 1 to 6, further comprising a high-pressure water gun cleaning system and a controller, wherein the high-pressure water gun cleaning system comprises high-pressure cleaning nozzles arranged on the first fire partition and the second fire partition, and the controller can control the high-pressure cleaning nozzles to be opened or closed.
9. The oil-immersed transformer fire resistance test safety protection device according to any one of claims 1 to 6, further comprising a waste liquid recovery system, wherein the waste liquid recovery system comprises a convex ground located in the test area, a waste liquid backflow groove arranged around the periphery of the convex ground, a drainage wellhead arranged in the waste liquid backflow groove, a wellhead cover covering the drainage wellhead, and a controller capable of controlling the wellhead cover to be opened or closed.
10. The safety protection device for the fire resistance test of the oil-immersed transformer according to any one of claims 1 to 6, wherein the first fire partition, the second fire partition, the third fire partition, the fourth fire partition and the louver boards are all made of concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011242130.8A CN112451874B (en) | 2020-11-09 | 2020-11-09 | Safety protection device for oil-immersed transformer fire resistance test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011242130.8A CN112451874B (en) | 2020-11-09 | 2020-11-09 | Safety protection device for oil-immersed transformer fire resistance test |
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| CN112451874A true CN112451874A (en) | 2021-03-09 |
| CN112451874B CN112451874B (en) | 2022-02-01 |
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| CN112451874B (en) | 2022-02-01 |
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