CN109765328A - The analogue test platform and simulation experiment method of transformer fire sprawling behavior - Google Patents
The analogue test platform and simulation experiment method of transformer fire sprawling behavior Download PDFInfo
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- CN109765328A CN109765328A CN201910036081.3A CN201910036081A CN109765328A CN 109765328 A CN109765328 A CN 109765328A CN 201910036081 A CN201910036081 A CN 201910036081A CN 109765328 A CN109765328 A CN 109765328A
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Abstract
The invention discloses a kind of analogue test platforms of transformer fire sprawling behavior, it includes explosiveproof isolation room, heating device, igniter, data collection system and extinguishing device；Explosiveproof isolation room includes bottom plate, divider wall and top cover, bottom plate is equipped with boss, and divider wall is set to the test space that top end opening is surrounded on bottom plate, and boss is located in test space, top cover is removably connected to isolation coping with leakage test space, and transformer to be measured is placed on boss；Heating device is set to the lower section that bottom plate is located at transformer to be measured；Igniter is set to the inner wall of divider wall, and firing tip extends to the region above boss；Data collection system includes multiple PC computers for being set to the indoor monitor of explosiveproof isolation and being set to outside explosiveproof isolation room, and each monitor is connected to PC computer；Extinguishing device is set on divider wall.Temperature changing regularity can accurately be obtained, and repeats and different transformers to be measured is simulated, experimentation cost can be reduced.
Description
Technical field
The invention belongs to electrical engineering technical fields, more particularly to a kind of simulation test of transformer fire sprawling behavior
Platform and simulation experiment method.
Background technique
Transformer fire is one of the major casualty for endangering power system stability operation at present, and transformer fire is mostly by transformation
Caused by hot oil and flammable paraffin gas burn inside body after body disintegrates.The intensity of a fire can be climing rapidly after transformer fire occurs
Prolong, body can be deformed due to absorbing a large amount of heat in the short time, cause solve body position at cut increase, transformer oil with can
Combustion paraffin gas will be gone out as cut is spread.Because process is very violent thus, the development dataset and picture at fire incident scene
It acquires extremely difficult completion and is difficult the value for sufficiently having scientific analysis.
Correlative study has been done to this kind of transformer fire sprawling behavior test by minority colleges and universities and R&D institution both at home and abroad.But
Have the following deficiencies: that the transformer oil fire of equal-wattage is simulated in 1) most tests with metal oil sump, and the sprawling of fire becomes
The geometrical relationship of the combustion law and transformer of gesture and transformer oil contacts very closely, so becoming in this way to simulate
Depressor fire, scientific insufficient, acquired the data precision is not high；2) in transformer oil fire spread behavior test, heating dress
It is big to set power, but be easily damaged in high temperature of fire, and the cost of manufacture of the equipment is high, service life is short, causes fire spread
Progress can not be repeated several times in test, and experimentation cost is excessively high.
Summary of the invention
The purpose of the present invention is to solve the shortcomings of the prior art place, provide that a kind of data acquisition is accurate and reliable, test
The analogue test platform and simulation experiment method of transformer fire sprawling behavior at low cost.
The analogue test platform of this transformer fire sprawling behavior provided by the invention, it includes explosiveproof isolation room, adds
Thermal, igniter, data collection system and extinguishing device；Explosiveproof isolation room includes bottom plate, divider wall and top cover, on bottom plate
Equipped with boss, divider wall is set to the test space that top end opening is surrounded on bottom plate, and boss is located in test space, and top cover is removable
It unloads and is connected to isolation coping with leakage test space, transformer to be measured is placed on boss；Heating device is set to bottom plate position
In the lower section of transformer to be measured；Igniter is set to the inner wall of divider wall, and firing tip extends to the region above boss；Data
Acquisition system includes multiple PC computers for being set to the indoor monitor of explosiveproof isolation and being set to outside explosiveproof isolation room, each to monitor
Device is connected to PC computer；Extinguishing device is set on divider wall for putting out a fire after the completion of testing.
In a specific embodiment, the divider wall is made to include top keel, bottom keel and be connected between the two
Structure keel, for divider wall by being assemblied on bottom plate across the expansion bolt of bottom keel, the top cover is removably connected to top
On keel.
Preferably, the boss to be set to the center position of bottom plate, it is reserved on the divider wall for placing
The peep hole of the monitor, it is impaired to prevent monitor that peep hole is externally provided with tempered glass.
Preferably, being coated with waterproof layer on the inner wall of the divider wall, steel wire is provided with outside waterproof layer.
In a specific embodiment, make the heating device include heating chassis, vortex excitation coil, frequency converter and
Power cabinet；Heating chassis is glass-ceramic chassis, and vortex excitation coil is set in heating chassis, the input power of power cabinet
For the 380V power supply of 50Hz, after power cabinet output is via frequency converter, the vortex excitation coil in heating chassis generates high frequency
Electric current, to generate high frequency magnetic field；Power cabinet is connected to the PC computer.
For the condition that body cracks after analogue transformer explosion, it is equipped on the top of the raising seat of the transformer to be measured
Through-hole.
In a specific embodiment, making the igniter includes mounting box, spark plug arm and spark plug, spark plug
Arm is connected to outside mounting box, and spark plug is removably connected to the outer end of spark plug arm, and the switch electricity that 380V turns 24V is set in mounting box
Source, high-voltage line are connected to spark plug through spark plug arm, and Switching Power Supply to spark plug for directly powering.
In a specific embodiment, make there are many monitors, including wall thermocouple, transformer thermocouple,
Video camera, infrared thermoviewer and flue gas analyzer；Wall thermocouple has multiple, is distributed in root, the middle part of divider wall
The top and；Transformer thermocouple has multiple, is respectively arranged in transformer body, bushing, transformer oil surface layer and transformer
Oil meter inner layer；Video camera and infrared thermoviewer are set at the peep hole of divider wall；Flue gas analyzer is installed on divider wall
Upper inside wall；The data collection system further includes multiplexed signal sampling instrument, and the signal of all kinds of monitor acquisitions is believed by multichannel
Number Acquisition Instrument feeds back to PC computer.
In order to reduce fire extinguishing cost, make the extinguishing device fine spray extinguisher, including water tank, water pump, solenoid valve
And fine mist spray head, the input port of water pump is connected to water tank, delivery outlet is connected to the entrance of solenoid valve, the outlet of solenoid valve and thin
Water mist spraying head connection, water mist spraying head are arranged in the inner wall of divider wall, are centered around the surrounding of transformer to be measured；The work of fine mist spray head
Making pressure is 4.5Mpa.
The present invention also provides a kind of simulation experiment method of transformer fire sprawling behavior, this method utilizes above-mentioned examination
Testing platform is execution of instrument, comprising the following steps:
Step 1: transformer to be measured is placed on the indoor boss of explosiveproof isolation；
Step 2: the injection transformer oil into transformer to be measured；
Step 3: the transformer oil in transformer to be measured is heated to 90-97 DEG C by control heating device work；
Step 4: gasoline is injected into transformer, until oil surface level is concordant with igniter；
Step 5: top cover is removably connected to the test space that isolation coping forms sealing；
Step 6: control igniter work lights gasoline and ignites hydraulic oil；
Step 7: turn-on data acquisition system, obtains the temperature changing regularity of transformer after firing；
Step 8: opening extinguishing device fire extinguishing.
In the use of the present invention, transformer to be measured is placed on the indoor boss of explosiveproof isolation first, then to change to be measured
Injection transformer oil in depressor then controls heating device work for the transformer oil in transformer to be measured and is heated to 90-97 DEG C,
Gasoline is injected into transformer again, until the oil surface level igniter work of control afterwards concordant with igniter lights gasoline and ignites liquid
Top cover is removably connected to the test space that isolation coping forms sealing, is then turned on data collection system, obtains by pressure oil
The temperature changing regularity of transformer after firing can accurately obtain the temperature changing regularity of transformer in simulation process, most
Extinguishing device fire extinguishing is opened afterwards.And the present apparatus is repeated and is simulated to different transformers to be measured, only needs to change igniting
Device can effectively reduce experimentation cost.
Detailed description of the invention
Fig. 1 is the axonometric schematic diagram of a preferred embodiment of the invention.
Fig. 2 is the cutaway enlargement diagram in the section A in Fig. 1.
Fig. 3 is the cutaway enlargement diagram of B-section in Fig. 1.
Fig. 4 is the connection schematic diagram of heating device in the present embodiment.
Fig. 5 is the control block diagram of data collection system in the present embodiment.
Fig. 6 is the water route schematic diagram of extinguishing device in the present embodiment.
Illustrate serial number:
1-explosiveproof isolation room,
11-bottom plates,
12-divider walls, 121-top keel, 122-bottom keel, 123-structure keel, 124-peep holes, 125-steel
Change glass,
13-top covers, 131-convex ribs,
14-boss,
15-expansion bolts；
2-heating devices, 21-heating chassis, 22-vortex excitation coils, 23-frequency converters, 24-power cabinets；
3-igniters, 31-mounting boxs, 32-spark plug arms, 33-spark plugs, 34-Switching Power Supplies；
4-data collection systems, 41-PC computers, 42-wall thermocouples, 43-transformer thermocouples, 44-videos are taken the photograph
As instrument, 45-infrared thermoviewers, 46-flue gas analyzers；
5-extinguishing devices, 51-water tanks, 52-water pumps, 53-solenoid valves, 54-fine mist spray heads；
6-transformers to be measured, 61-through-holes.
Specific embodiment
As shown in Figure 1, the analogue test platform of this transformer fire sprawling behavior provided in this embodiment, including it is explosion-proof
Isolation ward 1, heating device 2, igniter 3, data collection system 4 and extinguishing device 5.
As shown in Figure 2 and Figure 3, explosiveproof isolation room 1 includes bottom plate 11, divider wall 12 and top cover 13, and bottom plate 11 is equipped with boss
14, each wall is busting reinforcement concrete walls, uprising load >=850Kpa, fire endurance >=4 hour.Wherein divider wall 12 includes
Top keel 121, bottom keel 122 and structure keel 123 between the two are connected to, divider wall 12 is reserved when be poured concrete
Have peep hole 124 in order to place all kinds of monitors of data collection system 4, and peep hole be externally provided with tempered glass 125 with
Anti- monitor is damaged during the test；Top keel 121 be channel steel type, the opening up notch formed for assembling top cover,
The edge of top cover 13 is equipped with the convex ribs 131 that can be caught in the keel rabbet of top, and divider wall passes through the expansion bolt across bottom keel
15 are assemblied on bottom plate.And in divider wall production, inner surface wallboard covers layer of steel wire net, then powder after stamping marine glue
Face whitewash a wall to improve intensity, inner surface is prevented to be damaged in use, and wall face is only levelling with painting.
As Figure 1 and Figure 4, heating device 2 includes heating chassis 21, vortex excitation coil 22, frequency converter 23 and power cabinet
24；Heating chassis 21 is glass-ceramic chassis, and vortex excitation coil 22 is set in heating chassis, the input power of power cabinet
For the 380V power supply of 50Hz, heating device 2 is set to the lower section for being located at boss side transformer 6 to be measured on bottom plate.In use, electric
After cabinet output in source is via frequency converter, the vortex excitation coil in heating chassis generates high-frequency current, to generate high frequency magnetic
, the body of transformer to be measured is sensed changes of magnetic field and generates vortex, to generate heat transformer oil.Power supply
Cabinet is connected on the PC computer of data collection system 4 in order to observe real time temperature to open or close heating device, works as inspection
When measuring transformer body temperature to 95 DEG C or so, heating device is closed, is started a little after filling gasoline into its upper body of transformer
Fiery device 3 is lighted a fire.For the condition that body cracks after analogue transformer explosion, it is equipped on the top of the raising seat of transformer to be measured
Through-hole 61.
As shown in Fig. 2, igniter 3 includes mounting box 31, spark plug arm 32 and spark plug 33, spark plug be can be used commonly
Spark plug used in car combustion engine, spark plug extend at through-hole 61, and spark plug arm is connected to outside mounting box, and spark plug is removable
The outer end for being connected to spark plug arm is unloaded, the Switching Power Supply 34 that 380V turns 24V is set in mounting box, high-voltage line is connected to through spark plug arm
Spark plug, Switching Power Supply to spark plug for directly powering.Body is provided with the mixing of Kelamayi 25# transformer oil and gasoline
Object.Liquid level is substantially flush with opening substantially, and spark plug protrudes into the through-hole on transformer body to be measured, when needing to light a fire, fire
Hua Sai is by the mixture of transformer oil and gasoline in ignition transformer body；It is acquired entirely after lighting by data collection system 4
Various types of data in test space in the process.
As shown in Fig. 2, Fig. 5, data collection system 4 includes the PC computer 41 being set to outside explosiveproof isolation room and a variety of monitorings
Device, monitor have multiclass, have respectively wall thermocouple 42, transformer thermocouple 43, video camera 44, infrared thermoviewer 45 with
And flue gas analyzer 46, it is in that dot matrix is arranged that wall thermocouple, which has multiple, is distributed in the root, middle part and top of divider wall；Transformation
Device thermocouple have it is multiple, in dot matrix arrange, be respectively arranged in transformer body, bushing, transformer oil surface layer and transformer
Oil meter inner layer；Video camera and infrared thermoviewer are set at the peep hole of divider wall；Flue gas analyzer is installed on divider wall
Upper inside wall；The signal of all kinds of monitor acquisitions feeds back to PC computer by multiplexed signal sampling instrument.PC computer becomes for showing
The temperature variation curve of depressor body and anti-explosion wall each point, to obtain transformer its temperature changing regularity after fire generation.
FLIR T640 infrared thermoviewer can be used in infrared thermoviewer, and Siemens ultramat23 type flue gas point can be used in flue gas analyzer
Analyzer.Start extinguishing device 5 after the completion of test.
As shown in Fig. 2, Fig. 6, extinguishing device 5 is fine spray extinguisher, including water tank 51, water pump 52,53 and of solenoid valve
Fine mist spray head 54, the input port of water pump is connected to water tank, delivery outlet is connected to the entrance of solenoid valve, the outlet of solenoid valve and thin
Water mist spraying head connection, water mist spraying head are arranged in the inner wall of divider wall, are centered around the surrounding of transformer to be measured；Wherein fine mist spray head
It sprays water mist partial size and is no more than 400 microns, operating pressure 4.5Mpa, spray head spray cone angle is 60 °.Fine mist spray head and pipe
Road system uses 304L stainless steel material.The XBD series high voltage centrifugal pump combination XBD pressure stabilizing of Shanghai East Pump can be used in pump group
Pump group is closed, and the pump group response time is 2s.The solenoid valve response time is no more than 10s.The entire fine water mist fire-extinguishing system response time is not
More than 30s.
When carrying out simulation test with this analogue test platform provided in this embodiment, carry out as follows:
Step 1: transformer to be measured is placed on the indoor boss of explosiveproof isolation；
Step 2: the injection transformer oil into transformer to be measured；
Step 3: the transformer oil in transformer to be measured is heated to 95 DEG C by control heating device work；
Step 4: gasoline is injected into transformer, until oil surface level is concordant with igniter；
Step 5: top cover is buckled into the test space that isolation coping forms sealing；
Step 6: control igniter work lights gasoline and ignites hydraulic oil；
Step 7: all kinds of monitors in turn-on data acquisition system, obtain the temperature change rule of transformer after firing
It restrains and is shown by PC computer；
Step 8: opening extinguishing device fire extinguishing.
As it can be seen that the present invention can accurately obtain the temperature changing regularity of transformer in simulation process, and repeatable to not
Same transformer to be measured is simulated, and is only needed to change igniter, can be effectively reduced experimentation cost.
Claims (10)
1. a kind of analogue test platform of transformer fire sprawling behavior, it is characterised in that: it includes explosiveproof isolation room, heating dress
It sets, igniter, data collection system and extinguishing device；
Explosiveproof isolation room includes bottom plate, divider wall and top cover, and bottom plate is equipped with boss, and divider wall, which is set on bottom plate, surrounds top
The test space of opening, boss are located in test space, and top cover is removably connected to isolation coping with leakage test space,
Transformer to be measured is placed on boss；
Heating device is set to the lower section that bottom plate is located at transformer to be measured；
Igniter is set to the inner wall of divider wall, and firing tip extends to the region above boss；
Data collection system includes multiple PC electricity for being set to the indoor monitor of explosiveproof isolation and being set to outside explosiveproof isolation room
Brain, each monitor are connected to PC computer；
Extinguishing device is set on divider wall for putting out a fire after the completion of testing.
2. the analogue test platform of transformer fire sprawling behavior as described in claim 1, it is characterised in that: the divider wall
Including top keel, bottom keel and structure keel between the two are connected to, divider wall passes through the expansion bolt across bottom keel
It is assemblied on bottom plate, the top cover is removably connected on the keel of top.
3. the analogue test platform of transformer fire sprawling behavior as claimed in claim 2, it is characterised in that: the boss is set
It is placed in the center position of bottom plate, the peep hole for placing the monitor, peep hole peripheral hardware are reserved on the divider wall
There is tempered glass impaired to prevent monitor.
4. the analogue test platform of transformer fire sprawling behavior as claimed in claim 2, it is characterised in that: the divider wall
Inner wall on be coated with waterproof layer, steel wire is provided with outside waterproof layer.
5. the analogue test platform of transformer fire sprawling behavior as described in claim 1, it is characterised in that: the heating dress
It sets including heating chassis, vortex excitation coil, frequency converter and power cabinet；Heating chassis is glass-ceramic chassis, vortex excitation
Coil is set in heating chassis, and the input power of power cabinet is the 380V power supply of 50Hz, power cabinet output via frequency converter it
Afterwards, the vortex excitation coil in heating chassis generates high-frequency current, to generate high frequency magnetic field；Power cabinet is connected to the PC
Computer.
6. the analogue test platform of transformer fire sprawling behavior as described in claim 1, it is characterised in that: the change to be measured
The top of the raising seat of depressor is equipped with through-hole.
7. the analogue test platform of transformer fire sprawling behavior as claimed in claim 6, it is characterised in that: the igniting dress
It sets including mounting box, spark plug arm and spark plug, spark plug arm is connected to outside mounting box, and spark plug is removably connected to spark plug
The outer end of arm sets the Switching Power Supply that 380V turns 24V in mounting box, and high-voltage line is connected to spark plug, Switching Power Supply through spark plug arm
For directly powering to spark plug.
8. the analogue test platform of transformer fire sprawling behavior as described in claim 1, it is characterised in that: the monitor
There are many, including wall thermocouple, transformer thermocouple, video camera, infrared thermoviewer and flue gas analyzer；
Wall thermocouple has multiple, is distributed in the root, middle part and top of divider wall；
Transformer thermocouple has multiple, is respectively arranged in transformer body, bushing, transformer oil surface layer and transformer oil meter
Inner layer；
Video camera and infrared thermoviewer are set at the peep hole of divider wall；
Flue gas analyzer is installed on divider wall upper inside wall；
The data collection system further includes multiplexed signal sampling instrument, and the signal of all kinds of monitor acquisitions passes through multiplexed signal sampling
Instrument feeds back to PC computer.
9. the analogue test platform of transformer fire sprawling behavior as described in claim 1, it is characterised in that: the fire extinguishing dress
It is set to fine spray extinguisher, including water tank, water pump, solenoid valve and fine mist spray head, the input port of water pump is connected to water tank, is defeated
Outlet is connected to the entrance of solenoid valve, and the outlet of solenoid valve is connected to fine mist spray head, and water mist spraying head is arranged in the interior of divider wall
Wall is centered around the surrounding of transformer to be measured；The operating pressure of fine mist spray head is 4.5Mpa.
10. a kind of simulation experiment method of transformer fire sprawling behavior, it is characterised in that: this method utilizes claim 1 institute
The test platform stated is tool, comprising the following steps:
Step 1: transformer to be measured is placed on the indoor boss of explosiveproof isolation；
Step 2: the injection transformer oil into transformer to be measured；
Step 3: the transformer oil in transformer to be measured is heated to 90-97 DEG C by control heating device work；
Step 4: gasoline is injected into transformer, until oil surface level is concordant with igniter；
Step 5: top cover is removably connected to the test space that isolation coping forms sealing；
Step 6: control igniter work lights gasoline and ignites hydraulic oil；
Step 7: turn-on data acquisition system, obtains the temperature changing regularity of transformer after firing；
Step 8: opening extinguishing device fire extinguishing.
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| CN111122195A (en) * | 2019-12-25 | 2020-05-08 | 应急管理部天津消防研究所 | Experimental platform and experimental method for simulating fire of extra-high voltage converter transformer |
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| CN110992803B (en) * | 2019-11-19 | 2021-07-27 | 国网江苏省电力有限公司 | Oil-immersed transformer fire model and fire simulation method |
| CN110926840A (en) * | 2019-11-19 | 2020-03-27 | 国网江苏省电力有限公司 | Method capable of checking fire extinguishing effectiveness of oil-immersed transformer fire extinguishing system |
| CN110933792A (en) * | 2019-12-04 | 2020-03-27 | 国网湖南省电力有限公司 | Transformer fire-extinguishing true test insulating oil heating system and method |
| CN111122195A (en) * | 2019-12-25 | 2020-05-08 | 应急管理部天津消防研究所 | Experimental platform and experimental method for simulating fire of extra-high voltage converter transformer |
| CN111122195B (en) * | 2019-12-25 | 2021-08-13 | 应急管理部天津消防研究所 | Experimental platform and experimental method for simulating fire of extra-high voltage converter transformer |
| CN111948258A (en) * | 2020-07-14 | 2020-11-17 | 国网江苏省电力有限公司 | Test device and test method for simulating fire burning of transformer bushing |
| CN112451874A (en) * | 2020-11-09 | 2021-03-09 | 广东电网有限责任公司广州供电局 | Safety protection device for oil-immersed transformer fire resistance test |
| CN112451874B (en) * | 2020-11-09 | 2022-02-01 | 广东电网有限责任公司广州供电局 | Safety protection device for oil-immersed transformer fire resistance test |
| CN113624923A (en) * | 2021-08-11 | 2021-11-09 | 应急管理部天津消防研究所 | High-temperature hot oil-fire standard experimental device and fire extinguishing performance evaluation method |
| CN113759070A (en) * | 2021-08-23 | 2021-12-07 | 国网江苏省电力有限公司 | Simulation experiment platform and experiment method for vertical oil spilling and fire dripping of converter transformer under continuous oil spilling condition |
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