CN215136222U - Foam oil discharge fire extinguishing device for oil immersed transformer - Google Patents
Foam oil discharge fire extinguishing device for oil immersed transformer Download PDFInfo
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- CN215136222U CN215136222U CN202120553366.7U CN202120553366U CN215136222U CN 215136222 U CN215136222 U CN 215136222U CN 202120553366 U CN202120553366 U CN 202120553366U CN 215136222 U CN215136222 U CN 215136222U
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Abstract
The utility model provides an oil immersed transformer foam oil extraction extinguishing device, including foam spraying system, oil extraction system, control system real-time supervision temperature sensing cable and the low supplementary contact of three side switches of transformer height, when the tripping operation of the low three side switches of temperature sensing cable action and transformer height, control system starts foam spraying system and the oil extraction system of pre-starting, foam spraying system sprays the foam to oil immersed transformer and puts out a fire, starts pressure contactor after the spraying and opens oil extraction system arranges the oil. The utility model discloses fused the advantage that the spraying was put out a fire and the gas is put out a fire, adopted pressure storage and drive principle, the structure is compacter, and the efficiency and the performance of putting out a fire, keeping apart, emulsification are higher to discharge combustible substance (transformer oil) when putting out a fire, thoroughly solve the latent possibility of failure of putting out a fire.
Description
Technical Field
The utility model belongs to the technical field of the fire control, in particular to oil immersed transformer foam oil extraction extinguishing device.
Background
When the oil-immersed power transformer operates abnormally, the iron core may generate continuous high temperature, and when short circuit occurs inside the oil-immersed power transformer, overvoltage and the like may be generated, so that internal electric arc is further caused, and sudden short-time high heat energy is released. When the temperature of the internal oil of the main transformer is more than 300-400 ℃, the transformer oil can decompose combustible gas such as methane, hydrogen and the like, and when the temperature is more than 800 ℃, the transformer oil can release a large amount of combustible gas, so that the internal pressure of the transformer is increased, a gap is formed at a weak part, an oil-gas mixture is sprayed out of the gap, and the sprayed oil-gas mixture is in contact with air and then catches fire, thereby causing serious fire accidents.
The transformer is large in oil quantity, once a fire disaster happens, the consequence is very serious, and related national standards also stipulate that a transformer reaches a certain capacity and a transformer fire extinguishing device must be arranged. At present, the transformer fire-fighting equipment generally adopts fixed fire-extinguishing systems such as a water spray (fine water mist, foam spray, water and foam mixture) fire-extinguishing system, an oil-discharging nitrogen-injecting fire-extinguishing system, a gas fire-extinguishing system and the like. From the actual fire extinguishing effect, the fixed fire extinguishing systems have advantages and disadvantages in fire control, fire extinguishment and the like, but are difficult to play a role in really extinguishing a fire source.
When a transformer is in fire, not only the transformer is burnt, but also the transformer oil tank is burnt in the middle and later periods of the transformer fire, a large amount of transformer oil on fire can flow outwards, more electrical equipment can be ignited, and even the whole transformer substation is ignited, so that greater loss is caused. In China, the phenomenon that fire disasters and fish ponds occur in transformers in recent years causes great loss. Generally, a transformer substation is provided with a plurality of transformers, one transformer has a problem, other transformers can supply power for compensation, and if the whole transformer substation has the problem, the result of power supply paralysis can occur.
The transformer fire extinguishing equipment applied at the present stage has the common characteristics of short fire extinguishing time and limited fire extinguishing space, the water spray fire extinguishing time is 24min, the foam spray fire extinguishing time is 15min and the transformer oil discharge nitrogen injection fire extinguishing device is about 20 min. The oil-discharging nitrogen-injecting fire extinguishing device of the transformer can only extinguish the fire in the transformer, and the water spray and foam spray fire extinguishing can only extinguish the fire in the oil pool. In the case of tens of tons of transformer oil, once a fire cannot be extinguished in a limited extinguishing time and space, the oil fire is likely to spread.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an oil immersed transformer foam oil extraction extinguishing device overcomes the defect among the prior art, and concrete scheme is as follows:
the utility model provides an oil immersed transformer foam oil extraction extinguishing device, includes foam spraying system, oil extraction system, control system real-time supervision temperature sensing cable and the high-middle-low auxiliary contact of three side switches of transformer, when the tripping operation of the high-middle-low three side switches of temperature sensing cable action and transformer, control system starts foam spraying system and the oil extraction system of pre-starting, foam spraying system sprays the foam to oil immersed transformer and puts out a fire, starts pressure contactor after the spraying and opens oil extraction system oil extraction.
The oil discharge system comprises an oil discharge valve, a leakage monitoring device and a pressure contactor, wherein the leakage monitoring device is arranged on an accident oil pool and an oil discharge pipeline between the oil discharge valve, the pressure contactor is started and conducted by pressure liquid when spraying foam, the pressure contactor is installed on a pipeline behind a partition valve, one end of a normally open contact of the pressure contactor is connected with a foam oil discharge control center, the other end of the normally open contact of the pressure contactor is connected with the oil discharge valve, the contact of the pressure contactor is conducted and the control system is pre-started to discharge oil, and the oil discharge valve opens an oil discharge action.
Specifically, the starting pressure of the pressure contactor is more than 0.2 MPa.
The pressure contactor has a reset device and a holding function.
Specifically, the oil discharge valve is an electric control valve which is an electric ball valve, an electric butterfly valve or an electromagnetic valve.
Specifically, a fire-proof box is arranged outside the oil discharge valve, and the fire-proof box can protect the outside from being burnt for 90 minutes at 1100 ℃.
Specifically, the foam spraying system comprises a foam extinguishing agent liquid storage tank, a power cylinder group, a starting cylinder, a collecting pipe, a partition valve, an extinguishing agent pipeline and an extinguishing nozzle, wherein a gas outlet of the starting cylinder is connected with a plurality of power cylinder group head valve starting control ports, outlets of gas cylinders of the power cylinder group are connected to the collecting pipe through pressure reducers, the collecting pipe is connected to the top of the foam extinguishing agent liquid storage tank through a gas pipeline, foam liquid is filled in the foam extinguishing agent liquid storage tank, the foam extinguishing agent liquid storage tank is connected with the partition valve through a foam pipeline, and the partition valve is connected to the water mist nozzle around a transformer through the foam pipeline; the control system comprises a foam oil discharge control center, a pressure contactor cable F10, a pressure contactor and a transformer open circuit section terminal box, wherein the transformer open circuit section terminal box is connected with a high-middle-low three-side switch of the transformer through a cable assembly.
Specifically, the device further comprises the following cable components: the temperature sensing device comprises a 1# temperature sensing cable F1, a 2# temperature sensing cable F2, a temperature sensing signal transmission cable F3, a high-voltage circuit breaker auxiliary contact signal transmission cable F4, a medium-voltage circuit breaker auxiliary contact signal transmission cable F5, a low-voltage circuit breaker auxiliary contact signal transmission cable F6, a transformer three-side circuit device auxiliary contact signal transmission cable F7, a partition valve control cable F8, a gas starting bottle control cable F9, an automatic control oil drain valve-to-pressure contactor cable F10, a manual control oil drain valve cable F11 and a control oil drain valve cable F12.
Specifically, the control oil drain valve cable F12 is a fire-resistant armored cable. And a maintenance pressure plate is arranged on the control oil drain valve cable F12.
The utility model provides an oil immersed transformer foam oil extraction extinguishing device has fused the spraying and has put out a fire and gaseous advantage of putting out a fire, adopts accumulate and drive principle, and the structure is compacter, and the efficiency and the performance of putting out a fire, keeping apart, emulsification are higher to discharge combustible substance (transformer oil) when putting out a fire, thoroughly solve the latent possibility of failure of putting out a fire.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings required in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a foam oil-discharging fire extinguishing system provided by the present invention;
in the figure: 10. the system comprises a foam extinguishing agent liquid storage tank 101, a control valve 102, a partition valve 103, a pressure contactor 11, a power cylinder group 12, a starting cylinder 13, a collecting pipe 20, a foam oil discharge control center 30, an emergency oil pool 31, an oil discharge valve 32, a fire prevention box 33, a liquid leakage monitoring device 40, a fire extinguishing agent pipeline 41, a fire extinguishing nozzle 50, an oil immersed transformer 51, a transformer open circuit section terminal box 52 and a transformer high-middle-low three-side switch;
f1, 1# temperature sensing cable F2, 2# temperature sensing cable F3, temperature sensing signal transmission cable F4, high-voltage circuit breaker auxiliary contact signal transmission cable F5, medium-voltage circuit breaker auxiliary contact signal transmission cable F6, low-voltage circuit breaker auxiliary contact signal transmission cable F7, transformer three-side circuit ware auxiliary contact signal transmission cable F8, partition valve control cable F9, gas starting bottle control cable F10, automatic control oil drain valve to pressure contactor cable F11, manual control oil drain valve cable F12 and control oil drain valve cable.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described method is only a part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The utility model discloses specific embodiment as follows:
referring to the attached drawing 1, the utility model discloses an oil immersed transformer foam oil extraction extinguishing device, including foam water-spraying system, oil extraction system, control system real-time supervision temperature sensing cable and the low supplementary contact of three side switch 52 in the transformer height, when the tripping operation of three side switch 52 in temperature sensing cable action and the transformer height, control system starts foam water-spraying system and pre-start oil extraction system, foam water-spraying system sprays the foam to oil immersed transformer 50 and puts out a fire, starts pressure contactor 103 after spraying and opens oil extraction system oil extraction.
Specifically, the temperature sensing cables include at least two.
Specifically, the oil discharge system includes oil drain valve 31, weeping monitoring devices 33 and pressure contactor 103, weeping monitoring devices 33 locate accident oil pool 30 with on the oil drain pipeline between oil drain valve 31 for whether detect oil drain valve 31 and produce the oil leak trouble, oil drain valve 31 is started by pressure liquid and switches on when spraying the foam, pressure contactor 103 installs on the pipeline at subregion valve 102 back, foam oil extraction control center 20 is connected to pressure contactor 103 normally open contact's one end, oil drain valve 31 is connected to pressure contactor 103 normally open contact's the other end, pressure contactor 103 contact switches on the back, oil drain valve 31 opens the oil extraction action.
Specifically, oil discharge system's control cable includes oil discharge control cable includes pressure contactor cable F10, manual control oil drain valve cable F11 and control oil drain valve cable F12, pressure contactor cable F10 and manual control oil drain valve cable F11's one end is connected with pressure contactor, pressure contactor cable F10 and manual control oil drain valve cable F11's the other end is connected with control system, the one end of connection control oil drain valve cable F12 on the manual control oil drain valve cable F11, control oil drain valve cable F12's the other end and oil drain system are connected.
Specifically, the starting pressure of the pressure contactor 103 is greater than 0.2MPa, and the pressure contactor 103 has a resetting device and a holding function.
Specifically, the oil discharge valve 31 is an electric control valve, and the electric control valve is an electric ball valve, an electric butterfly valve or an electromagnetic valve. When the oil discharge system discharges oil, the oil discharge valve 13 is opened, and the transformer oil in the immersed transformer 50 is safely discharged to the interior of the accident oil pool 30 through the oil discharge pipeline, so that a secondary fire disaster caused by the transformer oil is prevented.
Specifically, a fire-proof box 32 is arranged outside the oil drain valve 31, and the fire-proof box 32 can protect the external 1100 ℃ from being burnt for 90 minutes, so that the oil drain valve 31 can be normally used in case of fire.
Specifically, the foam spraying system comprises a foam extinguishing agent liquid storage tank 10, power cylinder groups 11, a starting cylinder 12, a collecting pipe 13, partition valves 102, an extinguishing agent pipeline 40 and an extinguishing nozzle 41, wherein a gas outlet of the starting cylinder 12 is connected with a plurality of starting control ports of the power cylinder groups 11, gas outlets of the power cylinder groups 11 are connected to the collecting pipe 13 through pressure reducers, the collecting pipe 13 is connected with the top of the foam extinguishing agent liquid storage tank 10 through a gas pipeline, foam liquid is filled in the foam extinguishing agent liquid storage tank 10, the foam extinguishing agent liquid storage tank 10 is connected with the partition valves 102 through foam pipelines, the partition valves 102 are connected to water mist nozzles around a transformer through foam pipelines, and the foam extinguishing process comprises the following steps: when a foam spraying instruction is started, the starting bottle 12 receives the instruction to act by the electromagnet, high-pressure gas opens the plurality of gas bottles of the power bottle group 11, the high-pressure gas of the power bottle group 11 is decompressed and then filled into the collecting pipe 13, and then is filled into the foam extinguishing agent liquid storage tank 10 through the gas pipeline, the partition valve 102 is opened at the moment, under the action of pressure, foam liquid in the foam extinguishing agent liquid storage tank 10 is conveyed to the fire extinguishing nozzle 41 along the pipeline, and the foam liquid sprayed from the fire extinguishing nozzle 41 is atomized to the surface of the transformer to extinguish fire.
The control system comprises a foam oil discharge control center 20, a pressure contactor cable F10, a pressure contactor 103 and a transformer open circuit section terminal box 51, wherein the transformer open circuit section terminal box 51 is connected with a transformer high, middle and low three-side switch 52 through a cable assembly.
Specifically, the temperature sensing cable comprises a 1# temperature sensing cable F1 and a 2# temperature sensing cable F2, and further comprises a temperature sensing signal of the following cable components, namely a power transmission cable F3, a high-voltage circuit breaker auxiliary contact signal transmission cable F4, a medium-voltage circuit breaker auxiliary contact signal transmission cable F5, a low-voltage circuit breaker auxiliary contact signal transmission cable F6, a transformer three-side circuit breaker auxiliary contact signal transmission cable F7, a partition valve control cable F8 and a gas starting bottle control cable F9.
Specifically, the control oil drain valve cable F12 is a fire-resistant armored cable, and the control oil drain valve cable F12 is provided with an overhaul pressing plate (not shown), so that the overhaul pressing plate is opened to prevent oil from being discharged from the transformer during overhaul and test when the overhaul or the spray test is carried out.
The foam oil discharge control center 20 starts foam spraying fire extinguishing and oil discharge by judging signals of the high, medium and low three-side switch 52 of the transformer and fire signals, and the starting condition of the foam oil discharge control center 20 is to simultaneously meet the tripping of the high, medium and low three-side switch 52 of the transformer and the simultaneous action of two temperature sensing cables F1 and F2. When the foam oil discharge device starts fire extinguishing, the foam oil discharge control center 20 starts the bottle head valve of the bottle 12 through a control gas starting bottle control cable F9, opens the partition valve 102 through a control partition valve control cable F8, high-pressure gas in the starting bottle 12 reaches and opens each bottle head valve of the power bottle group 11 through a pipeline, the gas in the power bottle group 11 enters the collecting pipe 13 after being decompressed, and then is sent to the top of the foam extinguishing agent liquid storage tank 10 through a pipeline, meanwhile, the foam oil discharge control center 20 opens the partition valve 102 through a cable assembly, foam liquid is acted by pressure gas and reaches the fire extinguishing nozzles 41 around the oil immersed transformer 50 through the fire extinguishing agent pipeline 40 where the partition valve 102 is located, and the sprayed foam liquid extinguishes fire. The oil discharge system can be opened in an automatic mode and a manual mode, if the foam oil discharge control center 20 selects an oil discharge valve automatic oil discharge mode, the oil discharge valve 31 is started in advance while foam spraying fire extinguishment is started, a normally open contact of the pressure contactor 103 electrically isolates a control cable between the foam oil discharge control center 20 and the oil discharge valve 31, and after the contactor 103 is operated and conducted under the action of foam liquid pressure, the oil discharge valve 31 is opened and discharges oil. If the foam oil discharge control center 20 selects the manual oil discharge mode of the oil discharge valve, the foam oil discharge control center 20 directly starts the oil discharge valve 31 to discharge oil by pushing a breaker switch, and the manual starting switch is provided with a misoperation prevention measure.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. The utility model provides an oil immersed transformer foam oil extraction extinguishing device which characterized in that: including foam spraying system, oil extraction system, control system real-time supervision temperature sensing cable and the high-low three side switch's of transformer auxiliary contact (52), when the action of temperature sensing cable and the high-low three side switch's of transformer (52) tripping operation, control system starts foam spraying system and pre-start oil extraction system, foam spraying system sprays the foam to oil immersed transformer (50) and puts out a fire, starts pressure contactor (103) after the spraying and opens oil extraction system oil extraction.
2. Oil immersed transformer foam oil discharge fire extinguishing device according to claim 1, characterized in that: the oil extraction system includes oil drain valve (31), weeping monitoring devices (33) and pressure contactor (103), weeping monitoring devices (33) locate accident oil bath (30) with on the oil extraction pipeline between oil drain valve (31), pressure contactor (103) are started by pressure liquid and are switched on when spraying the foam, pressure contactor (103) are installed on the pipeline at subregion valve (102) back, foam oil extraction control center (20) is connected to the one end of pressure contactor (103) normally open contact, oil drain valve (31) is connected to the other end of pressure contactor (103) normally open contact, pressure contactor (103) contact switch on just control system has the oil extraction of pre-start, oil drain valve (31) are opened and are arranged the oil.
3. Oil transformer foam oil discharge fire extinguishing device according to claim 2, characterized in that: the starting pressure of the pressure contactor (103) is more than 0.2 MPa.
4. Oil transformer foam oil discharge fire extinguishing device according to claim 2, characterized in that: the pressure contactor (103) has a reset device and a holding function.
5. Oil transformer foam oil discharge fire extinguishing device according to claim 2, characterized in that: the oil discharge valve (31) is an electric control valve which is an electric ball valve, an electric butterfly valve or an electromagnetic valve.
6. Oil transformer foam oil discharge fire extinguishing device according to claim 2, characterized in that: a fire-proof box (32) is arranged outside the oil discharge valve (31), and the fire-proof box (32) can protect the outside from being burnt for 90 minutes at 1100 ℃.
7. Oil immersed transformer foam oil discharge fire extinguishing device according to claim 1, characterized in that:
the foam spraying system comprises a foam extinguishing agent liquid storage tank (10), power cylinder groups (11), a starting cylinder (12), a collecting pipe (13), a partition valve (102), an extinguishing agent pipeline (40) and a fire extinguishing nozzle (41), wherein a gas outlet of the starting cylinder (12) is connected with a plurality of cylinder head valve starting control ports of the power cylinder groups (11), gas cylinder outlets of the power cylinder groups (11) are connected to the collecting pipe (13) through pressure reducers, the collecting pipe (13) is connected with the top of the foam extinguishing agent liquid storage tank (10) through a gas pipeline, foam liquid is filled in the foam extinguishing agent liquid storage tank (10), the foam extinguishing agent liquid storage tank (10) is connected with the partition valve (102) through a foam pipeline, and the partition valve (102) is connected to the water mist nozzles around a transformer through a foam pipeline;
the control system comprises a foam oil discharge control center (20), a pressure contactor cable (F10), a pressure contactor (103) and a transformer open circuit section terminal box (51), wherein the transformer open circuit section terminal box (51) is connected with a transformer high-middle-low three-side switch (52) through a cable assembly.
8. Oil immersed transformer foam oil discharge fire extinguishing device according to any one of claims 1-7, characterized in that: the monitoring temperature sensing cable at least comprises two cables.
9. Oil transformer foam oil discharge fire extinguishing device according to claim 8, characterized in that: still include following cable subassembly 1# temperature sensing cable (F1), 2# temperature sensing cable (F2), temperature sensing signal transmission cable (F3), high voltage circuit breaker auxiliary contact signal transmission cable (F4), medium voltage circuit breaker auxiliary contact signal transmission cable (F5), low voltage circuit breaker auxiliary contact signal transmission cable (F6), transformer three side's ware auxiliary contact signal transmission cable (F7), subregion valve control cable (F8), gaseous starting bottle control cable (F9), automatic control oil drain valve to pressure contactor cable (F10), manual control oil drain valve cable (F11), control oil drain valve cable (F12).
10. Oil transformer foam oil discharge fire extinguishing device according to claim 9, characterized in that: the control oil drain valve cable (F12) is a fire-resistant armored cable, and a maintenance pressure plate is arranged on the control oil drain valve cable (F12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120553366.7U CN215136222U (en) | 2021-03-18 | 2021-03-18 | Foam oil discharge fire extinguishing device for oil immersed transformer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120553366.7U CN215136222U (en) | 2021-03-18 | 2021-03-18 | Foam oil discharge fire extinguishing device for oil immersed transformer |
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| CN215136222U true CN215136222U (en) | 2021-12-14 |
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| CN202120553366.7U Active CN215136222U (en) | 2021-03-18 | 2021-03-18 | Foam oil discharge fire extinguishing device for oil immersed transformer |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114155760A (en) * | 2021-12-21 | 2022-03-08 | 北京南瑞怡和环保科技有限公司 | Transformer fire experiment platform |
| CN115671608A (en) * | 2022-11-04 | 2023-02-03 | 山东电力工程咨询院有限公司 | Anti-explosion automatic fire extinguishing system of large-scale oil-containing electrical equipment and control method |
-
2021
- 2021-03-18 CN CN202120553366.7U patent/CN215136222U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114155760A (en) * | 2021-12-21 | 2022-03-08 | 北京南瑞怡和环保科技有限公司 | Transformer fire experiment platform |
| CN115671608A (en) * | 2022-11-04 | 2023-02-03 | 山东电力工程咨询院有限公司 | Anti-explosion automatic fire extinguishing system of large-scale oil-containing electrical equipment and control method |
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