CN215987794U - Transformer fire simulation device - Google Patents
Transformer fire simulation device Download PDFInfo
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- CN215987794U CN215987794U CN202121827074.4U CN202121827074U CN215987794U CN 215987794 U CN215987794 U CN 215987794U CN 202121827074 U CN202121827074 U CN 202121827074U CN 215987794 U CN215987794 U CN 215987794U
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- 238000004088 simulation Methods 0.000 title claims abstract description 65
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000002485 combustion reaction Methods 0.000 claims abstract description 45
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 35
- 239000000523 sample Substances 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 13
- 241000405070 Percophidae Species 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 25
- 239000007924 injection Substances 0.000 claims description 25
- 238000004804 winding Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 3
- 238000004880 explosion Methods 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000011160 research Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 7
- 239000011810 insulating material Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Abstract
A transformer fire simulation apparatus, the apparatus comprising: the device comprises a transformer body, a wire outlet sleeve, an oil conservator, a remote manual control valve, a splash pipe, a top combustion oil pool, a simulation tap switch combustion oil pool, a nitrogen exhaust pipe valve, a pressure release device, a high-voltage sleeve simulation combustion oil pool, a medium-voltage sleeve simulation combustion oil pool, a transformer simulation radiator, a current terminal, a voltage terminal, a duckbill nozzle, an operation manhole, a first temperature probe, a second temperature probe, a third temperature probe and a fourth temperature probe. The internal structure and the external structure provided by the fire simulation device can effectively promote the simulation of the fire form of the real large-scale transformer, which is consistent with the fire form, and provide a research and test platform for researching the fire fighting technology of large-scale oil-filled equipment.
Description
Technical Field
The utility model belongs to the field of power transformer fire-fighting research, and particularly relates to a transformer fire simulation device.
Background
Except some small-sized transformers of the power system adopt solid insulation, other high-capacity and high-voltage power transformers all adopt an oil paper insulation mode. The transformer oil accounts for the largest proportion in the total mass of the transformer combustible materials, and plays roles in heat dissipation and insulation. The transformer oil has high flash point (generally higher than 135 ℃), high density (relative density up to 0.895) and specific heat capacity of about 0.5 (Cal/g.), and is not inflammable at normal temperature, but the transformer oil in working state has a temperature of 75 ℃ generally, and the highest allowable working temperature is even up to 95 ℃, and at the moment, the transformer oil is easier to ignite than in normal temperature. In addition, the insulating material used for the transformer comprises a large amount of paper, wood and cloth materials. The insulation belongs to class A insulation mostly, the maximum operation temperature of the insulation is 105 ℃, and the performance and the quality of the insulation directly influence the operation reliability and the service life of the transformer. Research shows that internal faults are the main cause of transformer fire, electric arcs or high temperature caused by internal faults of initial equipment gasify the high temperature of insulating materials (mainly insulating oil) and generate inflammable combustible materials, strong energy generates violent internal reaction, violent reaction in a short period causes oil injection of a pressure relief valve of the transformer, and even causes cracking of a transformer box body, and decomposed substances and high-temperature insulating oil are splashed out and combined with air to form fire. In addition, fire produces CO, HCL, HCN, CL2, CO2And toxic and harmful gases further expand fire hazard.
For the main part of the transformer inducing fire, related experts at home and abroad also make a lot of research, for example, Martin and other scholars make statistics on fire fault accidents of the transformer in an Australian power system, and find that the faults of the sleeve and the tap changer are the main reasons for causing the fire of the transformer, wherein the fault reason of the sleeve accounts for 41 percent, and the fault reason of the tap changer accounts for 15 percent. According to the transformer fire situation provided by the institute of electrical and electronics engineers IEEE, quebec power company, canada, for 25 years, the causes of the transformer fire are also similar.
The transformer can be put out in time when a fire disaster happens, which is an effective means for effectively reducing the loss of equipment and personnel. The traditional transformer fire-fighting and fire-extinguishing technology mainly comprises four types, namely a fixed water spray (mist) fire-extinguishing system, a water mist fire-extinguishing system, an oil discharge and nitrogen injection fire-extinguishing system and a foam fire-extinguishing system. Around the fire extinguishing effect and the application range thereof, although a large number of simulation-based and true-type simulation tests are carried out by related scholars, most of simulation equipment adopts small devices, and the simulation equipment has great difference with a transformer in engineering practice in terms of quality or volume, so that the basic form of the simulation equipment in the actual fire can not be simulated. However, if a real power transformer is used, the problems of high price, heavy weight, great construction difficulty and irreversible loss to the transformer after the test result, which causes huge test cost each time and is not beneficial to the repeated and continuous development of the combustion test of the transformer, exist. In addition, the selection of the simulated ignition point by different researchers is often set according to own experience, and the research contents of different research objects are often not contrasted.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects in the prior art, the utility model aims to provide a fire simulation device for a transformer.
The utility model adopts the following technical scheme:
a transformer fire simulation apparatus comprising: the device comprises a transformer body 7, an outlet sleeve 1, an oil conservator 2, a remote manual control valve 3, a nitrogen exhaust pipe valve 8, a pressure release device 9, a transformer simulation radiator 12 and an operation manhole 16; the fire simulation device for the transformer further comprises:
the device comprises a current terminal 13, a voltage terminal 14, a duckbill nozzle 15, an electric spray pipe 4, a top combustion oil pool 5, an analog tap changer combustion oil pool 6, a high-voltage sleeve analog combustion oil pool 10, a medium-voltage sleeve analog combustion oil pool 11, a first temperature probe 17, a second temperature probe 18, a third temperature probe 19 and a fourth temperature probe 20;
the outgoing line sleeve 1, the oil conservator 2, the top combustion oil pool 5, the pressure release device 9 and the operation manhole 16 are arranged at the top of the transformer body 7;
one side of the left side and the right side of the transformer body 7 is connected with an external nitrogen injection device, and the other side of the transformer body is connected with a transformer simulation radiator 12;
the transformer body 7 contains the simulation oil pool.
The outlet bushing 1 includes: the high-voltage side outgoing line sleeve, the medium-voltage side outgoing line sleeve and the low-voltage side outgoing line sleeve are respectively provided with a lifting seat and a test sleeve;
the upper end of the high-voltage side outgoing line sleeve lifting seat is provided with a high-voltage sleeve fire simulation combustion oil pool 10, and the upper end of the medium-voltage side outgoing line sleeve lifting seat is provided with a medium-voltage sleeve fire simulation combustion oil pool 11.
The width of the high-voltage bushing fire simulation combustion oil pool 10 and the medium-voltage bushing fire simulation combustion oil pool 11 is the length from the outer edge of the corresponding outgoing line bushing to the outer edge of the lifting seat.
The splash pipe 4 extends from the lower part of the conservator 2, the upper end of the splash pipe is provided with a remote manual control valve 3, and the lower end of the splash pipe is provided with a duckbill nozzle 15.
The simulated combustion oil pool (6) of the simulated tap changer is arranged at the tap changer of the transformer body (7), and the length, width and height values of the simulated combustion oil pool are respectively [0.6m,0.8m ], [0.6m,0.8m and 0.15 m.
The diameter of the pressure release device 9 is in the range of [20cm,30cm ].
The inside simulation oil bath structure that adopts of transformer body 7, the long limit outside surface of transformer body is provided with current terminal 13, with inside simulation winding intercommunication, realizes the control to the electric current size through external current conversion device.
The surface of the outer side of the long edge of the transformer body 7 is provided with a voltage terminal 14 which is communicated with a discharge gap in the simulation oil pool inside the transformer body 7.
The first temperature probe 17, the second temperature probe 18, the third temperature probe 19 and the fourth temperature probe 20 are respectively arranged on the front, the rear, the left and the right sides of the outer side of the transformer body 7.
The external nitrogen injection device is connected with the transformer body 7 through a pipeline; wherein, the nitrogen injection device comprises a control system and a nitrogen injection system;
the control system adopts a relay for control, receives a signal DC220V, outputs a non-electric quantity contact of which a communication signal contact can bear the voltage of DC220V, and communicates with an upper computer through the non-electric quantity contact; when the transformer body 7 is in fire or explosion danger, the nitrogen exhaust pipe valve 8 of the nitrogen injection system is opened, nitrogen is filled into the transformer from the lower part of the transformer through a nitrogen injection pipeline of the nitrogen injection system, the oil temperature in the transformer is cooled, and air is isolated.
Compared with the prior art, the utility model has the beneficial effects that:
1. the novel transformer fire simulation device provided by the utility model can effectively promote the simulation of fire forms with the same fire form of a real large-scale transformer by the internal structure and the external structure;
2. the structure of the transformer fire simulation device can effectively prevent transformer fire caused by internal faults of the internal fire simulation device, and avoid the accidents that the insulating material is gasified and flammable combustible materials are generated due to electric arcs or high temperature caused by the internal faults of initial equipment.
Drawings
FIG. 1 is a front view of a transformer fire simulator in accordance with an embodiment of the present invention;
FIG. 2 is a top view of a transformer fire simulator in accordance with an embodiment of the present invention;
the reference numbers in the above figures are as follows:
1-a wire outlet sleeve;
2- -conservator;
3- -remote manual valve;
4- -splash tube;
5- -top combustion oil sump;
6-simulating a tap changer combustion oil pool;
7-transformer body;
8- -nitrogen vent pipe valve;
9- -pressure relief device;
10- -high pressure bushing simulation combustion oil pool;
11- -medium pressure sleeve simulating combustion oil pool;
12-transformer simulation radiator;
13- -current terminal;
14- -voltage terminal;
15- -duckbill nozzle;
16- -operating manhole;
17- -first temperature probe;
18- -second temperature probe;
19- -third temperature probe;
20- -fourth temperature probe.
Detailed Description
The present application is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
Fig. 1 and 2 show a front view and a top view of a fire simulator of a transformer according to the present invention, which specifically includes: the device comprises a transformer body 7, an outlet sleeve 1, an oil conservator 2, a remote manual control valve 3, a splash pipe 4, a top combustion oil pool 5, a simulated tap changer combustion oil pool 6, a nitrogen exhaust pipe valve 8, a pressure release device 9, a high-pressure sleeve simulated combustion oil pool 10, a medium-pressure sleeve simulated combustion oil pool 11, a transformer simulated radiator 12, a current terminal 13, a voltage terminal 14, a duckbill nozzle 15, an operation manhole 16, a first temperature probe 17, a second temperature probe 18, a third temperature probe 19 and a fourth temperature probe 20;
the outgoing line sleeve 1, the oil conservator 2, the top combustion oil pool 5, the pressure release device 9 and the operation manhole 16 are arranged at the top of the transformer body 7;
one side of the left side and the right side of the transformer body 7 is connected with an external nitrogen injection device, and the other side of the transformer body is connected with a transformer simulation radiator 12;
the transformer body 7 is internally provided with a simulation oil pool;
specifically, the outlet bushings 1 are respectively arranged along two groups of long edges at the top of the transformer body 7, and the middle of the outlet bushings is separated by the conservator 2. The outgoing line sleeve 1 comprises a high-voltage side outgoing line sleeve, a medium-voltage side outgoing line sleeve and a low-voltage side outgoing line sleeve, and a lifting seat and a test sleeve are respectively arranged on the three outgoing line sleeves. Preferably, the number of the high-voltage side outgoing line sleeves is 4, the number of the medium-voltage side outgoing line sleeves is 4, and the number of the low-voltage side outgoing line sleeves is 3. The high voltage range is [110kV,220kV ], the medium voltage range is [35kV,110kV ], the low voltage range is [10kV,35kV ], in the present invention, 220kV is used for high voltage, 35kV is used for medium voltage, and 10kV is used for low voltage.
Preferably, the fire simulation device of the transformer simulates the appearance size of a 220kV three-phase three-winding YNyn0d11 type power transformer, the length range of the transformer main body 7 is [9m,11m ], the width range of the transformer main body is [3m,4m ], the height range of the transformer main body is [3m,4m ], and an oil conservator is arranged at the top of the transformer main body 7.
A high-voltage bushing fire simulation combustion oil pool 10 is arranged at the upper end of the high-voltage side outgoing bushing lifting seat, a medium-voltage bushing fire simulation combustion oil pool 11 is arranged at the upper end of the medium-voltage side outgoing bushing lifting seat, and the widths of the two combustion pools are respectively the lengths from the outer edge of the outgoing bushing to the outer edge of the lifting seat and are used for simulating a bushing fire caused by a bushing fault; the splash pipe 4 extends out of the lower part of the oil conservator 2, the upper end of the splash pipe is provided with a remote manual control valve 3, and the lower end of the splash pipe is provided with a duckbill nozzle 15;
the simulated combustion oil pool 6 of the simulated tap changer is arranged at the tap changer of the transformer body 7, the length, width and height value ranges are respectively [0.6m,0.8m ], [0.6m,0.8m and 0.15m, and the simulated combustion oil pool is used for simulating a fire disaster at the tap changer caused by the fault of the tap changer;
a top combustion oil pool 5 is arranged at the upper part of the transformer body 7, and the length, width and height value ranges of the top combustion oil pool 5 are respectively [0.5m,0.7m ], [0.4m,0.6m ] and 0.15m, so as to simulate the fire splashing caused by oil leakage of a transformer conservator connecting pipe and the surrounding fire of a test on the transformer;
the top of the transformer body 7 is provided with a pressure release device 9, the diameter of the pressure release device is in a value range of [20cm,30cm ], the pressure release device is used for realizing direct conduction between the inside and the outside of the transformer, and the danger that the simulation device is exploded due to violent combustion in the inside in an internal combustion test is avoided. The transformer body 7 is internally provided with a simulation oil pool structure for simulating a transformer oil-immersed coil system, and meanwhile, the surface of the transformer body 7 is provided with a current terminal 13 which is communicated with an internal simulation winding and realizes the control of the current size through an external converter device. The current loop can be used for preheating the insulating oil in the simulation oil pool in the transformer, simulating the equipment state of the transformer during actual operation and analyzing the influence of high temperature on the degradation degree of the main insulating material of the transformer;
meanwhile, the surface of the transformer body 7 is provided with a voltage terminal 14 which is communicated with a discharge gap in a simulation oil pool inside the transformer body 7, and different voltages are applied to the outside to simulate the condition of fire caused by breakdown of an insulating medium caused by the voltages.
The top of the transformer body 7 is provided with an operation manhole 16, and the length of the operation manhole is within a value range
[0.5m,0.7m ] and a width of 0.5m, and is used for prefabricating and replacing test winding units and current and voltage to spare parts by testing personnel according to test requirements, and realizing internal operations such as oiling of an internal simulation oil pool, prefabricating combustion media and the like.
The outer sides of the front, the rear, the left and the right sides of the transformer body 7 are respectively provided with a first temperature probe 17, a second temperature probe 18, a third temperature probe 19 and a fourth temperature probe 20, which are used for monitoring the temperature condition of the insulating oil in the simulated oil pool inside the transformer body 7. In order to simulate the fire extinguishing performance of the oil discharge and nitrogen injection device, the transformer fire simulation device is provided with a set of nitrogen injection device which is connected with the transformer body 7 through a pipeline. Wherein, the nitrogen injection device mainly comprises a control system and a nitrogen injection system. The control system adopts a relay for control, receives a signal of DC220V, outputs a non-electric quantity contact of which a communication signal contact can bear the voltage of DC220V, and communicates with an upper computer through the non-electric quantity contact. When the transformer is in fire or explosion danger, the nitrogen exhaust pipe valve 8 of the nitrogen injection system is opened, nitrogen is injected into the transformer from the lower part of the transformer through a nitrogen injection pipeline of the nitrogen injection system, the oil temperature in the transformer is cooled, and air is isolated.
And one side of the left side and the right side of the transformer body 7 is connected with an external nitrogen injection device, and the other side of the left side and the right side of the transformer body is connected with a transformer simulation radiator 12.
The applicant has described and illustrated embodiments of the present invention in detail with reference to the drawings attached hereto, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (10)
1. A transformer fire simulation apparatus, the transformer fire simulation apparatus comprising: the device comprises a transformer body (7), a wire outlet sleeve (1), an oil conservator (2), a remote manual control valve (3), a nitrogen exhaust pipe valve (8), a pressure release device (9), a transformer simulation radiator (12) and an operation manhole (16); it is characterized in that the fire simulation device of the transformer further comprises:
the device comprises a current terminal (13), a voltage terminal (14), a duckbill nozzle (15), an electric spray pipe (4), a top combustion oil pool (5), an analog tap switch combustion oil pool (6), a high-voltage sleeve analog combustion oil pool (10), a medium-voltage sleeve analog combustion oil pool (11), a first temperature probe (17), a second temperature probe (18), a third temperature probe (19) and a fourth temperature probe (20);
the outgoing line sleeve (1), the oil conservator (2), the top combustion oil pool (5), the pressure release device (9) and the operation manhole (16) are arranged at the top of the transformer body (7);
one side of the left side and the right side of the transformer body (7) is connected with an external nitrogen injection device, and the other side of the transformer body is connected with a transformer simulation radiator (12);
the transformer body (7) is internally provided with a simulation oil pool.
2. The transformer fire simulation apparatus of claim 1, wherein:
the outlet bushing (1) comprises: the high-voltage side outgoing line sleeve, the medium-voltage side outgoing line sleeve and the low-voltage side outgoing line sleeve are respectively provided with a lifting seat and a test sleeve;
the high-voltage side outlet sleeve lifting seat is characterized in that a high-voltage sleeve simulated combustion oil pool (10) is arranged at the upper end of the high-voltage side outlet sleeve lifting seat, and a medium-voltage sleeve simulated combustion oil pool (11) is arranged at the upper end of the medium-voltage side outlet sleeve lifting seat.
3. The transformer fire simulation apparatus of claim 2, wherein:
the width of the high-voltage sleeve simulated combustion oil pool (10) and the width of the medium-voltage sleeve simulated combustion oil pool (11) are the length from the outer edge of the corresponding outgoing line sleeve to the outer edge of the lifting seat.
4. The transformer fire simulation apparatus of claim 1, wherein:
the splash pipe (4) extends out of the lower part of the oil conservator (2), the upper end of the splash pipe is provided with a remote manual control valve (3), and the lower end of the splash pipe is provided with a duckbill-shaped nozzle (15).
5. The transformer fire simulation apparatus of claim 1, wherein:
the analog tap changer combustion oil pool (6) is arranged at a tap changer of the transformer body (7), and the length, width and height value ranges are respectively [0.6m,0.8m ], [0.6m,0.8m and 0.15 m.
6. The transformer fire simulation apparatus of claim 1, wherein:
the diameter of the pressure release device (9) is in a range of [20cm,30cm ].
7. The transformer fire simulation apparatus of claim 1, wherein:
the transformer body (7) is internally provided with a simulation oil pool structure, the surface of the outer side of the long edge of the transformer body is provided with a current terminal (13) which is communicated with an internal simulation winding, and the control of the current is realized through an external converter device.
8. The transformer fire simulation apparatus of claim 1 or 7, wherein:
the surface of the outer side of the long edge of the transformer body (7) is provided with a voltage terminal (14) which is communicated with a discharge gap in a simulation oil pool in the transformer body (7).
9. The transformer fire simulation apparatus of claim 1, wherein:
the first temperature probe (17), the second temperature probe (18), the third temperature probe (19) and the fourth temperature probe (20) are respectively arranged on the front, the rear, the left and the right sides of the outer side of the transformer body (7).
10. The transformer fire simulation apparatus of claim 1, wherein:
the external nitrogen injection device is connected with the transformer body (7) through a pipeline; wherein, the nitrogen injection device comprises a control system and a nitrogen injection system;
the control system adopts a relay for control, receives a signal DC220V, outputs a non-electric quantity contact of which a communication signal contact can bear the voltage of DC220V, and communicates with an upper computer through the non-electric quantity contact; when the transformer body (7) is in fire or explosion danger, a nitrogen exhaust pipe valve (8) of the nitrogen injection system is opened, nitrogen is injected into the transformer from the lower part of the transformer through a nitrogen injection pipeline of the nitrogen injection system, the oil temperature in the transformer is cooled, and air is isolated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121827074.4U CN215987794U (en) | 2021-08-05 | 2021-08-05 | Transformer fire simulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121827074.4U CN215987794U (en) | 2021-08-05 | 2021-08-05 | Transformer fire simulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215987794U true CN215987794U (en) | 2022-03-08 |
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ID=80514001
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121827074.4U Active CN215987794U (en) | 2021-08-05 | 2021-08-05 | Transformer fire simulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215987794U (en) |
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2021
- 2021-08-05 CN CN202121827074.4U patent/CN215987794U/en active Active
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