CN204182053U - Oil draining nitrogen filling fire extinguishing device for transformer - Google Patents
Oil draining nitrogen filling fire extinguishing device for transformer Download PDFInfo
- Publication number
- CN204182053U CN204182053U CN201420508759.6U CN201420508759U CN204182053U CN 204182053 U CN204182053 U CN 204182053U CN 201420508759 U CN201420508759 U CN 201420508759U CN 204182053 U CN204182053 U CN 204182053U
- Authority
- CN
- China
- Prior art keywords
- oil
- nitrogen
- valve
- pipeline
- transformer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 207
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 108
- 238000011049 filling Methods 0.000 title claims abstract description 18
- 238000000605 extraction Methods 0.000 claims description 19
- 239000007789 gas Substances 0.000 claims description 16
- 238000012423 maintenance Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 6
- 230000006378 damage Effects 0.000 abstract description 8
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 206010020852 Hypertonia Diseases 0.000 abstract description 3
- 230000007257 malfunction Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 5
- 238000010891 electric arc Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000002828 fuel tank Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000003642 hunger Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000037351 starvation Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Landscapes
- Housings And Mounting Of Transformers (AREA)
Abstract
A kind of oil draining nitrogen filling fire extinguishing device for transformer, comprises nitrogen and injects path, nitrogen drain passageway, transformer body repairing path, oil outlet passage, described nitrogen drain passageway is: the urgent inlet end of denitrogen magnetic valve is connected with the outlet side of transformer body, the outlet side of urgent denitrogen magnetic valve is connected with nitrogen outlet, electric leakage magnet valve in anti-nitrogen, note nitrogen magnetic valve, urgent denitrogen magnetic valve, the setting of cutout magnetic valve and oil drain solenoid valve four magnetic valves achieves the Automated condtrol of the utility model oil draining nitrogen filling fire extinguishing device for transformer, nitrogen drain passageway can ensure that transformer body can not cause box house hypertonia because of the injection of nitrogen, it also avoid the damage because malfunction may bring to transformer body simultaneously.
Description
Technical field
The utility model relates to transformer safety field, particularly relates to the supporting extinguishing device of a kind of transformer.
Background technology
Transformer as transformer station's inner core primary equipment adopts oil-immersed self-cool mostly, its mineral insulating oil consumption is huge, such as capacity is the 110kV main transformer of 40MVA, heavily about 17 tons, its transformer oil, 500kV main transformer single phase heavily about 50 tons, 1000kV main transformer single phase is heavy, reaches about 130 tons especially.Transformer oil flash-point is at 135 ~ 150 DEG C, and burning-point is at 165 ~ 195 DEG C, and self-ignition point about 332 DEG C, easily evaporation, burning, form explosive mixture with air mixing energy.If once there is the fault such as heavy overload, short circuit in transformer, insulant and oil are sharply vaporized and inside transformer pressure are sharply increased under the effect of electric arc, light then damage or burn transformer, heavy then blast on fire, a large amount of oil spout can also expand fire further, and serious harm power supply reliability, even likely causes electric network from collapsing, it is dangerous greatly, loss is large, and social negative effect is larger.
The means of fire of China 220kV transformer is mostly oil draining nitrogen filling device at present, and this device is made up of flow control valve, heat fire detector, on the spot fire hydrant cabinet, long-distance control cabinet etc.When inside transformer breaks down, fierce electric arc makes insulating oil decompose, and produces a large amount of fuel gas at box house, makes the methane gas actuating of relay cause circuit breaker trip.Can continue to increase at the effect lower fuel tank pressure of thermal inertia, when overpressure relief valve and pressure controller setting value, top sleeve pipe or transformer body is forced to break, the oil of a large amount of burning may be gushed out, when its temperature exceedes oil extraction nitrogen charging device when design temperature (generally higher than the set temperature value of transformer tripping operation) of the heat fire detector of ignition point, temperature sensing glass ball bursts, send alarm signal, the transformer oil release that draining valve venting top of oil-tank opened by interlocking is on fire from explosion to prevent.The cut-off valve be simultaneously contained under conservator is closed automatically when changes in flow rate, cuts off conservator to the repairing oil circuit of transformer-cabinet, stops because of excessive " the adding fuel to the flames " of high-order conservator.After oil extraction 3 ~ 10s, post-decompression nitrogen injects from bottom half with the pressure of 0.8 ~ 1.0MPa, stirs and forces cooling insulating oil, and forming nitrogen blanket starvation on pasta upper strata, reaches cooling and fire-retardant object.The lasting injection of a large amount of nitrogen can make the oil liquid temperature in fuel tank be reduced to below burning-point, can thoroughly put out a fire and prevent resume combustion.Nitrogen is inexpensive easily to be purchased and free from environmental pollution, and can avoid the secondary damage that water or water-bearing media cause transformer, reduces the loss of fire.
But oil draining nitrogen filling device in actual use, all there is nonaction in various degree, transformer still loaded-up during malfunction, now oil extraction can cause the irrecoverability of transformer to damage, thus be often " manually " by switching, under this state, fire hydrant cabinet need be opened on the spot and just can come into operation, and once Causing Fire in Transformer personnel are difficult to close to fire hydrant cabinet, fail to play due effect.Therefore, in the urgent need to for this situation, oil draining nitrogen filling device is changed into automatically, and mistake action and rejecting action can be prevented to greatest extent, reach its due fire-fighting effect.
Utility model content
The purpose of this utility model is to provide a kind of oil draining nitrogen filling fire extinguishing device for transformer for solving the problems of the technologies described above.
A kind of oil draining nitrogen filling fire extinguishing device for transformer, comprises nitrogen and injects path, transformer body repairing path, oil outlet passage, nitrogen drain passageway;
Described nitrogen injects path: N
2steel cylinder is connected by the air inlet port of pipeline with note nitrogen magnetic valve, the air outlet of note nitrogen magnetic valve is connected by the air inlet of pipeline with current limliting pressure-reducing valve, the gas outlet of current limliting pressure-reducing valve is connected with the inlet end of check valve by pipeline, the air inlet port of the outlet side connection transformer body of check valve, the pipeline between N2 steel cylinder and note nitrogen magnetic valve is provided with entrance gas circuit N
2pressure detecting electric contact, the pipeline between current limliting pressure-reducing valve and check valve is provided with entrance N
2pressure detecting electric contact;
Described nitrogen drain passageway is: the urgent inlet end of denitrogen magnetic valve is connected with the outlet side of transformer body, and the outlet side of urgent denitrogen magnetic valve is connected with nitrogen outlet;
Described transformer body repairing path is: the oil-out of the oil-in connection transformer conservator of cutout magnetic valve, the oil-out of cutout magnetic valve, by the oil-in of pipeline connection transformer body, the pipeline between cutout magnetic valve and transformer body is provided with Buchholz relay;
Described oil outlet passage is: the oil-in of oil drain solenoid valve is connected with the oil-out of transformer body by pipeline, and the oil-out of oil drain solenoid valve to be exported with oil extraction by pipeline and is connected, and the pipeline between oil drain solenoid valve and oil extraction export is provided with flowmeter.
At described note nitrogen magnetic valve and described entrance gas circuit N
2pipeline between pressure detecting electric contact is provided with electric leakage magnet valve in anti-nitrogen.
Pipeline between described urgent denitrogen magnetic valve and described transformer body is provided with transformer body pressure detecting electric contact.
Pipeline between described flowmeter and described oil extraction export is provided with oil leakage alarm device.
Pipeline between check valve and transformer body is provided with the first maintenance hand-operated valve, pipeline between transformer body pressure detecting electric contact and the outlet side of transformer body is provided with the second maintenance hand-operated valve, pipeline between cutout magnetic valve and installation for transformer is provided with the 3rd and overhauls hand-operated valve, the pipeline between oil drain solenoid valve and transformer body is provided with the 4th maintenance hand-operated valve.
The beneficial effects of the utility model are, in anti-nitrogen, the setting of electric leakage magnet valve, note nitrogen magnetic valve, urgent denitrogen magnetic valve, cutout magnetic valve and oil drain solenoid valve four magnetic valves achieves the Automated condtrol of the utility model oil draining nitrogen filling fire extinguishing device for transformer, it also avoid the damage because malfunction may bring to transformer body, nitrogen drain passageway can ensure that transformer body can not cause box house hypertonia because of the injection of nitrogen simultaneously.
Below in conjunction with accompanying drawing, the utility model oil draining nitrogen filling fire extinguishing device for transformer is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model oil draining nitrogen filling fire extinguishing device for transformer.
Detailed description of the invention
As shown in Figure 1, the utility model oil draining nitrogen filling fire extinguishing device for transformer comprises N
2steel cylinder G, entrance N
2electric leakage magnet valve V1, note nitrogen magnetic valve V2, current limliting pressure-reducing valve X, entrance gas circuit N in pressure detecting electric contact PG1, anti-nitrogen
2pressure detecting electric contact PG2, check valve D, the first maintenance hand-operated valve V3, transformer body B, the second maintenance hand-operated valve V4, transformer body pressure detecting electric contact PG3, urgent denitrogen magnetic valve V5, nitrogen outlet CK, installation for transformer YZ, the 3rd maintenance hand-operated valve V6, cutout magnetic valve V7, Buchholz relay W, the 4th maintenance hand-operated valve V8, oil drain solenoid valve V9, flowmeter LL, oil leakage alarm device L, oil extraction outlet P.
Above-mentioned each device device constitutes nitrogen and injects path, nitrogen drain passageway, transformer body repairing path, oil outlet passage;
Nitrogen injects path: N
2steel cylinder G is connected by the air inlet port of pipeline with note nitrogen magnetic valve V2, the air outlet of note nitrogen magnetic valve V2 is connected by the air inlet of pipeline with current limliting pressure-reducing valve X, the gas outlet of current limliting pressure-reducing valve X is connected by the inlet end of pipeline with check valve D, the air inlet port of the outlet side connection transformer body B of check valve D, at N
2pipeline between steel cylinder G and note nitrogen magnetic valve V2 is provided with entrance gas circuit N
2pressure detecting electric contact PG1, the pipeline between current limliting pressure-reducing valve X and check valve D is provided with entrance N
2pressure detecting electric contact PG2;
Nitrogen drain passageway: the inlet end of urgent denitrogen magnetic valve V5 is connected with the outlet side of transformer body B, and the outlet side of urgent denitrogen magnetic valve V5 is connected with nitrogen outlet CK;
Transformer body repairing path: the oil-out of the oil-in connection transformer conservator YZ of cutout magnetic valve V7, the oil-out of cutout magnetic valve V7, by the oil-in of pipeline connection transformer body B, the pipeline between cutout magnetic valve V7 and transformer body B is provided with Buchholz relay W;
The oil-in of oil outlet passage: oil drain solenoid valve V9 is connected by the oil-out of pipeline with transformer body B, and the oil-out of oil drain solenoid valve V9 exports P by pipeline and oil extraction and is connected, and oil drain solenoid valve V9 and oil extraction export on the pipeline between P and be provided with flowmeter LL.
Nitrogen injects path and is used for providing nitrogenous source to transformer body B; Nitrogen drain passageway is for reducing the residual gas in the pressure in transformer body B and discharge transformer body B; Transformer body repairing path is used for supplementing the oil sources missed to transformer body B; Oil outlet passage is for discharging the oil sources in transformer body B.
Transformer normally work lower nitrogen inject path do not have nitrogen to inject, nitrogen drain passageway, oil outlet passage are also obstructed, repairing path is opened and is communicated with transformer body B, in transformer course of normal operation when oil outlet passage detects transformer body B leakage of oil, repairing path gives transformer body B repairing automatically; When transformer work occurs abnormal, (electric arc as too high, fierce in temperature makes insulating oil decompose, a large amount of fuel gas is produced) in transformer body inside, transformer body repairing path disconnects and no longer supplements oil sources to transformer body B, simultaneously oil outlet passage is opened and is discharged a certain amount of by the oil sources in transformer body B, start oil extraction 3 ~ 10s (time according to actual conditions can sets itself) afterwards nitrogen inject path and open and start to nitrogen injection in transformer body B.
First the connection disconnecting repairing path and transformer body B can prevent installation for transformer YZ repairing expansion accident.
Entrance gas circuit N
2pressure detecting electric contact PG1, for detecting nitrogen cylinder (1) outlet pressure, guarantees enough to supply through post-decompression gas, when pressure is less than 1.0MPa alarm in nitrogen cylinder; Note nitrogen magnetic valve V2 injects the break-make of path for controlling nitrogen; Current limliting pressure-reducing valve X is used for N
2the nitrogen flowed out in steel cylinder G carries out pressure setting, avoids hypertonia; Entrance N
2for detecting nitrogen, pressure detecting electric contact PG2 injects whether all valves on path are unobstructed opens, as current limliting pressure-reducing valve X, note nitrogen magnetic valve V
2, arbitrary in check valve D three do not open, then its pressure is shown as 0, sends alarm signal; In note nitrogen process, when pressure is less than 0.6MPa, send alarm signal; Check valve D injects path for preventing the oil sources in transformer body B from flowing into nitrogen;
Urgent denitrogen magnetic valve V5 is for controlling the break-make of nitrogen drain passageway; Installation for transformer YZ is used for supplementing oil sources to transformer body B, cutout magnetic valve V7 is used for the break-make of control transformer body repairing path, Buchholz relay W, for detecting the gas density of transformer body B inside, sends alarm signal when having detected when gas density is greater than preset value; Oil drain solenoid valve V9 is for controlling the break-make of oil outlet passage, and whether flowmeter LL is unobstructed for detecting oil extraction, and whether detection oil drain solenoid valve V9 opens: when V9 does not open, without flow indication on flowmeter LL; Oil in transformer body B is flowed out from eminence by pipeline, its stability of flow, when the flow value that flowmeter LL shows is less than stationary value, can think that oil outlet passage has blocking.
Under transformer normal operation, note nitrogen magnetic valve V2 closes, and nitrogen injects path and disconnects; Urgent denitrogen magnetic valve V5 closes, and nitrogen drain passageway disconnects; Cutout magnetic valve V7 opens, and transformer body repairing path is opened; Oil drain solenoid valve V9 closes, and oil outlet passage disconnects; When inside transformer operation irregularity, cutout magnetic valve V7 closes, and transformer body repairing path disconnects; Oil drain solenoid valve V9 opens, and oil outlet passage is opened; Note nitrogen magnetic valve V2 afterwards to open, nitrogen injects path and opens, last urgent denitrogen magnetic valve V5 opens, denitrogen path is opened and is discharged by the nitrogen of transformer body inside (avoiding the injection because of a large amount of high pressure nitrogens to cause damage to transformer body B), when starting to carry out the oil extraction action of note nitrogen because of the misinformation of signal under transformer normal operation, can open urgent denitrogen magnetic valve V5 to be got rid of in time by the high pressure nitrogen of injection transformer body B, the high pressure avoiding the injection along with nitrogen to produce causes damage to transformer body B.
On the basis of above-described embodiment, at note nitrogen magnetic valve V2 and entrance gas circuit N
2pipeline between pressure detecting electric contact PG1 is provided with electric leakage magnet valve V1 in anti-nitrogen, in anti-nitrogen, electric leakage magnet valve V1 controls the break-make that nitrogen injects path with note nitrogen magnetic valve V2 double electromagnetic valve, under normal circumstances, there is not the action of note nitrogen, the leakproof prime of magnet valve V1 as note nitrogen magnetic valve V2 of now leaking electricity in anti-nitrogen; During note nitrogen action, after note nitrogen magnetic valve V2 opens, in anti-nitrogen, electric leakage magnet valve V1 just opens, and prevents the unexpected pressurization of nitrogen from making note nitrogen magnetic valve V2 tripping, adds the safety redundancy of system.
Pipeline between urgent denitrogen magnetic valve V5 and transformer body B is provided with transformer body pressure detecting electric contact PG3, for the pressure of Real-Time Monitoring transformer body B inside, in note nitrogen oil extraction process when exceeding setting value, the urgent denitrogen magnetic valve V5 that links opens, nitrogen is discharged from nitrogen drain passageway, avoids transformer body superpressure.
Flowmeter LL and oil extraction export on the pipeline between P and are provided with oil leakage alarm device L, oil leakage alarm device L is float-ball type matured product, be serially connected on oil outlet passage, only as path circulation during oil extraction, during not oil extraction, as pipeline has tiny leakage, along with increasing, gradually by ball float levitating, when the position of ball float reaches setting value of leakage fluid, namely send the warning of drain line leakage of oil, inform staff's check valve pipeline.
Pipeline between check valve D and transformer body B is provided with the first maintenance hand-operated valve V3, pipeline between transformer body pressure detecting electric contact PG3 and the outlet side of transformer body B is provided with the second maintenance hand-operated valve V4, pipeline between cutout magnetic valve V7 and installation for transformer YZ is provided with the 3rd and overhauls hand-operated valve V6, the pipeline between oil drain solenoid valve V9 and transformer body B is provided with the 4th and overhauls hand-operated valve V8; When transformer normally works, first overhauls hand-operated valve V3, the second maintenance hand-operated valve V4, the 3rd maintenance hand-operated valve V6, the 4th maintenance hand-operated valve V8 are normally open, when needs individual channel needs can close during maintenance to overhaul hand-operated valve accordingly, corresponding path and transformer body B are isolated.
Above-described embodiment is only be described preferred embodiment of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (5)
1. an oil draining nitrogen filling fire extinguishing device for transformer, comprises nitrogen and injects path, transformer body repairing path, oil outlet passage, characterized by further comprising nitrogen drain passageway;
Described nitrogen injects path: N
2steel cylinder (G) is connected by the air inlet port of pipeline with note nitrogen magnetic valve (V2), the air outlet of note nitrogen magnetic valve (V2) is connected by the air inlet of pipeline with current limliting pressure-reducing valve (X), the gas outlet of current limliting pressure-reducing valve (X) is connected by the inlet end of pipeline with check valve (D), the air inlet port of outlet side connection transformer body (B) of check valve (D), at N
2pipeline between steel cylinder (G) and note nitrogen magnetic valve (V2) is provided with entrance gas circuit N
2pressure detecting electric contact (PG1), the pipeline between current limliting pressure-reducing valve (X) and check valve (D) is provided with entrance N
2pressure detecting electric contact (PG2);
Described nitrogen drain passageway is: the inlet end of urgent denitrogen magnetic valve (V5) is connected with the outlet side of transformer body (B), and the outlet side of urgent denitrogen magnetic valve (V5) is connected with nitrogen outlet (CK);
Described transformer body repairing path is: the oil-out of the oil-in connection transformer conservator (YZ) of cutout magnetic valve (V7), the oil-out of cutout magnetic valve (V7), by the oil-in of pipeline connection transformer body (B), the pipeline between cutout magnetic valve (V7) and transformer body (B) is provided with Buchholz relay (W);
Described oil outlet passage is: the oil-in of oil drain solenoid valve (V9) is connected by the oil-out of pipeline with transformer body (B), the oil-out of oil drain solenoid valve (V9) exports (P) by pipeline with oil extraction and is connected, and oil drain solenoid valve (V9) and oil extraction export on the pipeline between (P) and be provided with flowmeter (LL).
2. oil draining nitrogen filling fire extinguishing device for transformer according to claim 1, is characterized in that, at described note nitrogen magnetic valve (V2) and described entrance gas circuit N
2pipeline between pressure detecting electric contact (PG1) is provided with electric leakage magnet valve (V1) in anti-nitrogen.
3. oil draining nitrogen filling fire extinguishing device for transformer according to claim 1, it is characterized in that, the pipeline between described urgent denitrogen magnetic valve (V5) and described transformer body (B) is provided with transformer body pressure detecting electric contact (PG3).
4. oil draining nitrogen filling fire extinguishing device for transformer according to claim 1, is characterized in that, described flowmeter (LL) and described oil extraction export on the pipeline between (P) and be provided with oil leakage alarm device (L).
5. according to the arbitrary described oil draining nitrogen filling fire extinguishing device for transformer of Claims 1-4, it is characterized in that, pipeline between check valve (D) and transformer body (B) is provided with the first maintenance hand-operated valve (V3), pipeline between the outlet side of transformer body pressure detecting electric contact (PG3) and transformer body (B) is provided with the second maintenance hand-operated valve (V4), pipeline between cutout magnetic valve (V7) and installation for transformer (YZ) is provided with the 3rd and overhauls hand-operated valve (V6), pipeline between oil drain solenoid valve (V9) and transformer body (B) is provided with the 4th and overhauls hand-operated valve (V8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508759.6U CN204182053U (en) | 2014-09-04 | 2014-09-04 | Oil draining nitrogen filling fire extinguishing device for transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508759.6U CN204182053U (en) | 2014-09-04 | 2014-09-04 | Oil draining nitrogen filling fire extinguishing device for transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204182053U true CN204182053U (en) | 2015-03-04 |
Family
ID=52614087
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508759.6U Active CN204182053U (en) | 2014-09-04 | 2014-09-04 | Oil draining nitrogen filling fire extinguishing device for transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204182053U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710503A (en) * | 2020-07-07 | 2020-09-25 | 国网安徽省电力有限公司电力科学研究院 | Extra-high voltage converter variable force oil discharging and nitrogen injecting device, control system and method |
-
2014
- 2014-09-04 CN CN201420508759.6U patent/CN204182053U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710503A (en) * | 2020-07-07 | 2020-09-25 | 国网安徽省电力有限公司电力科学研究院 | Extra-high voltage converter variable force oil discharging and nitrogen injecting device, control system and method |
| CN111710503B (en) * | 2020-07-07 | 2024-05-28 | 国网安徽省电力有限公司电力科学研究院 | Extra-high voltage converter transformer power oil discharge and nitrogen injection device, control system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104436477A (en) | Comprehensive fire fighting system and comprehensive fire fighting method of large-size oil-containing equipment of transformer substation | |
| CN201337778Y (en) | Control circuit for transformer fire extinguisher with maloperation prevention | |
| CN202236971U (en) | Quick oil-discharging and nitrogen-injecting fire-extinguishing device | |
| CN207024428U (en) | Ore heat furnace transformer unattended surveillance carries fire-extinguishing function concurrently and automatically protects system | |
| CN108607175B (en) | Combined distribution anti-action anti-misoperation anti-explosion dampproof oil-discharging nitrogen-injecting fire extinguishing device | |
| CN105185542A (en) | Explosion-proof 75MVA transformer system | |
| CN110882501A (en) | Transformer comprehensive fire prevention and control system | |
| CN106390335A (en) | Oil-draining and nitrogen-injecting fire extinguishing device comprising double oil draining systems | |
| CN204182053U (en) | Oil draining nitrogen filling fire extinguishing device for transformer | |
| CN105097190B (en) | Charged full-automatic flame failure protection device and protection method for oil immersed transformer | |
| CN102226961B (en) | Transformer switch room live oil-replacing device and application process thereof | |
| CN212593609U (en) | Explosion-proof oil-discharging nitrogen-injecting fire extinguishing device for oil-immersed transformer | |
| CN211434846U (en) | Transformer comprehensive fire prevention and control system | |
| CN210644903U (en) | Remote control device for oil discharging and nitrogen injecting device of oil-immersed transformer | |
| CN202509103U (en) | Furnace lining leakage detector for medium-frequency induction heating furnace | |
| CN108443708B (en) | Liquid ammonia security control method | |
| CN104089300A (en) | Safety control method for preventing tempering explosion of gas boiler | |
| CN105185545A (en) | 75 MVA transformer capable of realizing pressure relief and explosion prevention | |
| CN204189707U (en) | A kind of new type of relay | |
| CN205211578U (en) | 75MVA transformer of explosion -proof environmental protection | |
| CN207199400U (en) | The fire-proof and explosion-proof safety guard of transformer | |
| CN203783648U (en) | Device for discharging hydrogen safely under emergency condition | |
| CN203377056U (en) | Transformer with nitrogen injecting and fire extinguishing device | |
| CN105185546A (en) | 75MVA transformer with mixed explosion-proof function | |
| CN204668079U (en) | Protection equipment for transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |