CN217724390U - Oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device - Google Patents
Oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device Download PDFInfo
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- CN217724390U CN217724390U CN202221699477.XU CN202221699477U CN217724390U CN 217724390 U CN217724390 U CN 217724390U CN 202221699477 U CN202221699477 U CN 202221699477U CN 217724390 U CN217724390 U CN 217724390U
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Abstract
The utility model discloses an oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device, which belongs to the technical field of transformers and comprises a fire-fighting cabinet, wherein a nitrogen cylinder is arranged in the fire-fighting cabinet, and a nitrogen valve is arranged on a nitrogen-injecting pipeline which is arranged between a gas outlet of the nitrogen cylinder and a nitrogen-injecting port of the transformer and is close to the nitrogen-injecting port; an oil discharge valve positioned in the fire-fighting cabinet is arranged on an oil discharge pipeline between the transformer and the accident oil storage pool, the oil discharge valve is a normally open manual oil discharge valve, a normally closed manual oil discharge valve is arranged on the oil discharge pipeline between the oil discharge valve and the transformer, and an oil leakage monitoring part is arranged on the oil discharge pipeline close to an oil outlet of the manual oil discharge valve; and a manual nitrogen injection valve group is arranged on a nitrogen injection pipeline between the nitrogen cylinder and the nitrogen valve, and a gas leakage monitoring piece is arranged on a nitrogen injection pipeline between the manual nitrogen injection valve group and the nitrogen injection port. The utility model discloses can solve weight device malfunction, oil leak that current oil-immersed transformer's oil extraction nitrogen injection extinguishing device exists and arrange the problem that the abnormal conditions that oil drain pipe does not arrange the oil circuit and leads to takes place.
Description
Technical Field
The utility model belongs to the technical field of the transformer technique and specifically relates to an oil extraction nitrogen injection extinguishing device for oil-immersed transformer.
Background
Oil immersed transformer's oil extraction notes nitrogen extinguishing device is when being used for the transformer of oil immersed to take place the burning risk that appears of major failure, discharges the transformer insulating oil rapidly to accident oil storage pond, simultaneously to the inside fire control unit who injects nitrogen gas of transformer. An oil-draining nitrogen-injecting fire extinguishing device of an oil-immersed transformer comprises a fire-fighting cabinet, wherein a nitrogen cylinder is arranged in the fire-fighting cabinet, a nitrogen-injecting pipeline is connected between the nitrogen cylinder and a nitrogen-injecting port below the transformer, a nitrogen valve is arranged on the nitrogen-injecting pipeline close to the nitrogen-injecting port, and a metal film is arranged on the nitrogen valve; an oil discharge pipeline is arranged between the transformer and the accident oil storage pool, an oil discharge valve and an expansion joint which are positioned in the fire-fighting cabinet are sequentially arranged on the oil discharge pipeline between the transformer and the accident oil storage pool, and a metal film is arranged in the expansion joint; wherein, the control of the nitrogen valve and the oil discharge valve is controlled by a heavy hammer arranged at one end of a control rod in an interlocking way; the following serious defects exist in practical application: (1) Such a mating mechanism is highly dangerous, such as long-term vibration, and tends to loosen the fastening portion and cause malfunction. (2) Due to long-term stress, the components are easy to deform, and misoperation is caused. (3) When the internal pressure of the transformer is not enough to break through the metal film arranged on the expansion joint, if a gap appears on the top of the transformer, the internal pressure of the transformer is released through the gap, oil flows out of the gap, and even if the oil discharge is started by injecting nitrogen, the oil discharge pipe does not discharge oil, and all the oil overflows from the gap, once a fire disaster occurs, the fire disaster is a destructive fire disaster. These malfunctions, refusal actions and leakage all affect the realization of the normal function of the oil-discharging nitrogen-injecting fire extinguishing device, and cause huge loss. (4) Because the connecting rod of the heavy hammer controls the oil drain valve inside, the connecting rod is easy to deform due to vibration or rusting, and thus a gap is formed in the matching inside of the oil drain valve to leak oil. (5) The connection part of the weight is also rejected by deformation, rusting, connection loosening, etc. (6) The vibration and deformation affect the sealing performance of the butterfly valve controlled by the heavy hammer. The normal functions of the oil-discharging nitrogen-injecting fire extinguishing device can be affected by the false actions, the refusal actions and the leakage, so that huge loss is caused.
SUMMERY OF THE UTILITY MODEL
The utility model provides a nitrogen extinguishing device is annotated to oil immersed transformer's oil extraction, this kind of device can solve weight device malfunction, oil leak that current oil immersed transformer's oil extraction nitrogen extinguishing device exists and the problem that the abnormal situation that oil extraction pipe does not arrange the oil circuit and leads to takes place.
In order to solve the above problem, the utility model discloses the technical scheme who adopts is: the oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device comprises a fire-fighting cabinet, wherein a nitrogen cylinder is arranged in the fire-fighting cabinet, and a nitrogen valve is arranged on a nitrogen-injecting pipeline between the nitrogen cylinder and a nitrogen-injecting port of the transformer and close to the nitrogen-injecting port; an oil discharge valve positioned in the fire-fighting cabinet is arranged on an oil discharge pipeline between the transformer and the accident oil storage pool, the oil discharge valve is a normally open manual oil discharge valve, a normally closed manual oil discharge valve is arranged on the oil discharge pipeline between the oil discharge valve and the transformer, and an oil leakage monitoring part is arranged on the oil discharge pipeline close to an oil outlet of the manual oil discharge valve; the device comprises a nitrogen cylinder, a nitrogen valve, a manual nitrogen injection valve group, a gas leakage monitoring piece and a gas leakage monitoring piece, wherein the manual nitrogen injection valve group is arranged on a nitrogen injection pipeline between the nitrogen cylinder and the nitrogen valve, and is positioned between the manual nitrogen injection valve group and the nitrogen injection port and close to the manual nitrogen injection valve group.
In the above technical solution, a more specific technical solution may also be: the manual nitrogen injection valve group comprises a first manual valve and a second manual valve which are connected in series, a diffusing pipe is arranged on the nitrogen injection pipeline between the first manual valve and the second manual valve, and a manual diffusing valve is arranged on the diffusing pipe.
Further: the first manual valve and the manual bleeding valve are both normally closed manual valves; the second manual valve is a normally open manual valve.
And further: the gas leakage monitoring piece comprises a first oil cup and a first capacitance type proximity switch, a detection head of the first oil cup faces the first oil cup, the first oil cup is connected with the nitrogen injection pipeline through a first branch pipe, and the installation height of the first oil cup is lower than that of the nitrogen injection pipeline; the oil leakage monitoring part comprises a second oil cup and a second capacitance type proximity switch, the detection head of the second oil cup faces the second oil cup, the second oil cup is connected with the oil discharge pipeline through a second branch pipe, and the installation height of the second oil cup is lower than that of the oil discharge pipeline; the first branch pipe and the second branch pipe are respectively provided with an oil cup valve; the first capacitance type proximity switch and the second capacitance type proximity switch are respectively connected with an audible and visual alarm through a control box.
And further: the first oil cup and the second oil cup are both made of transparent materials; the oil cup valve is a normally open manual valve.
And further: the control box comprises an A/D conversion module and a first branch circuit, the first branch circuit is formed by connecting the first capacitive proximity switch and the second capacitive proximity switch in parallel and then connecting the first capacitive proximity switch and a coil of a relay in series, the power input end of the A/D conversion module is correspondingly connected with a live wire and a zero line of an alternating current power supply through a first air switch, and the power output end of the A/D conversion module is correspondingly connected with two ends of the first branch circuit through a second air switch; the audible and visual alarm comprises a field audible and visual alarm and a remote audible and visual alarm, one contact of the relay is connected with the field audible and visual alarm in series, and then one end of the relay is connected with the live wire, and the other end of the relay is connected with the zero line; and the other contact of the relay is connected with the remote audible and visual alarm in series, and then one end of the relay is connected with the live wire, and the other end of the relay is connected with the zero line.
Further: the power indicator lamp is connected with the first branch circuit in parallel; and a fuse is arranged between the live wire and the two contacts of the relay.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
because the utility model discloses a structure, set up manual nitrogen filling valves on annotating the nitrogen pipeline, set up the manual oil drain valve of normal close on oil drain pipeline, and be equipped with gas leakage monitoring piece and oil leak monitoring piece, not only convenient operation, operating personnel can open the valve on the nitrogen filling pipeline and the valve on the oil drain pipeline fast when the accident happens, discharge the insulating oil in the transformer rapidly, and pour into nitrogen gas into to the transformer, reduce the temperature in the transformer fast, isolated air, realize putting out a fire and preventing fires, weight device malfunction has been avoided, the oil leak and the oil drain pipe do not arrange the abnormal conditions that the oil circuit leads to and take place, and, can reveal at the first manual valve in manual nitrogen filling valves, the metal film inefficacy damage of nitrogen gas valve that annotates in the nitrogen pipeline, insulating oil of transformer flows back when in first oil cup and/or normally closed manual oil drain valve takes place to leak, when the oil leak flows in the second oil cup, make the person on duty can in time take corresponding measure, close second manual valve and/or oil drain valve, thereby the safe operation of transformer and high-voltage electric network has been guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of fig. 1 at R.
Fig. 3 is a schematic diagram of an oil leak alarm according to an embodiment of the present invention.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
the oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device shown in fig. 1 and 2 comprises a fire-fighting cabinet 1, wherein a nitrogen cylinder 2 is arranged in the fire-fighting cabinet 1, and a nitrogen-injecting pipeline L1 is connected between an air outlet 0 of the nitrogen cylinder 2 and a nitrogen-injecting port I of a transformer 3; a nitrogen valve 4 is arranged on a nitrogen injection pipeline L1 close to a nitrogen injection port, a manual nitrogen injection valve group 5 is arranged on the nitrogen injection pipeline L1 between a nitrogen bottle 2 and the nitrogen valve 4, the manual nitrogen injection valve group 5 comprises a first manual valve 5-1 and a second manual valve 5-2 which are connected in series, a diffusing pipe 5-3 is erected on the nitrogen injection pipeline between the first manual valve 5-1 and the second manual valve 5-2, a manual diffusing valve 5-4 is arranged on the diffusing pipe 5-3, and the first manual valve 5-1 and the manual diffusing valve 5-4 are both normally closed manual valves; the second manual valve 5-2 is a normally open manual valve; the second manual valve is used for timely closing the first manual valve when leakage exists; the function of standby is played; the diffusing pipe 5-3 and the manual diffusing valve 5-4 are used for relieving the pressure in the nitrogen injection pipeline to a standard value when the pressure of the nitrogen injection pipe is too high; a gas leakage monitoring piece 6 is arranged on a nitrogen injection pipeline L1 which is positioned between the manual nitrogen injection valve group 5 and the nitrogen injection port I and is close to the manual nitrogen injection valve group 5; the air leakage monitoring part 6 comprises a first oil cup 6-1 and a first capacitance type proximity switch 6-2, wherein a detection head of the first capacitance type proximity switch 6-2 faces the first oil cup 6-1 and is used for detecting whether oil leakage exists in the first oil cup 6-1 or not; the first oil cup 6-1 is connected with the nitrogen injection pipeline L1 through a first branch pipe 6-3, the installation height of the first oil cup 6-1 is lower than that of the nitrogen injection pipeline L1, an oil cup valve 6-4 is arranged on the first branch pipe 6-3, and the oil cup valve 6-4 is a normally open manual valve; an oil discharge pipeline L2 is arranged between the transformer 3 and the accident oil storage pool 7, an oil discharge valve 8 positioned in the fire-fighting cabinet 2 is arranged on the oil discharge pipeline L2, the oil discharge valve 8 is a normally open manual oil discharge valve, a normally closed manual oil discharge valve 9 is arranged on the oil discharge pipeline L2 between the oil discharge valve 8 and the transformer 3, and the normally closed manual oil discharge valve 9 and the manual nitrogen injection valve group 5 are both arranged at a door opening of the transformer room which is convenient to operate when in failure; the oil discharge valve 8 is used for timely closing the normally closed manual oil discharge valve when leakage exists; the function of standby is played; an oil leakage monitoring part 10 is arranged on the oil drainage pipeline L2 and close to an oil outlet of the manual oil drainage valve 9, the oil leakage monitoring part 10 comprises a second oil cup 10-1 and a second capacitive proximity switch 10-2, and a detection head of the second capacitive proximity switch 10-2 faces the second oil cup 10-1 and is used for detecting whether oil leaks in the second oil cup 10-1 or not; the second oil cup 10-1 is connected with the oil discharge pipeline L2 through a second branch pipe 10-3, the installation height of the second oil cup 10-1 is lower than that of the oil discharge pipeline L2, an oil cup valve 10-4 is arranged on the second branch pipe 10-3, and the oil cup valve 10-4 is a normally open manual valve; the first capacitive proximity switch 6-2 and the second capacitive proximity switch 10-2 are respectively connected with an audible and visual alarm through a control box 11; the control box 11 comprises an A/D conversion module 12 and a first branch, the first branch is formed by connecting a first capacitance type proximity switch 6-2 and a second capacitance type proximity switch 10-2 in parallel and then connecting a coil 13-1 of a relay in series, a power supply input end of the A/D conversion module 12 is correspondingly connected with a live wire L and a zero wire N of an alternating current power supply through a first air switch 14, and a power supply output end of the A/D conversion module 12 is correspondingly connected with two ends of the first branch through a second air switch 15; the audible and visual alarm comprises a field audible and visual alarm 16 and a remote audible and visual alarm 17, wherein one contact 13-1-1 of the relay is connected with the field audible and visual alarm 16 in series, one end of the relay is connected with a live wire L through a fuse 18, and the other end of the relay is connected with a zero line N; the other contact 13-1-2 of the relay is connected with the remote audible and visual alarm 17 in series, one end of the relay is connected with the live wire L through the fuse 19, and the other end of the relay is connected with the zero line N; a power indicator light 20, wherein the power indicator light 20 is connected with the first branch in parallel; when the first capacitive proximity switch 6-2 and/or the second capacitive proximity switch 10-2 detect/detect oil leakage respectively, the first capacitive proximity switch 6-2 and/or the second capacitive proximity switch 10-2 are/is closed respectively, and the relay controls the on-site audible and visual alarm 16 and the remote audible and visual alarm 17 to give an alarm simultaneously.
The utility model discloses set up manual nitrogen valves of annotating on annotating the nitrogen pipeline, set up the manual oil drain valve of normal close on oil drain pipeline, and be equipped with gas leakage monitoring piece and oil leak monitoring piece, and is convenient for operation, operating personnel can open the valve on the nitrogen pipeline of annotating fast and the valve on the oil drain pipeline when the accident happens, discharge the insulating oil in the transformer rapidly, and pour into nitrogen gas into to the transformer, reduce the temperature in the transformer fast, isolated air, realize putting out a fire and preventing fires, weight device malfunction has been avoided, the oil leak takes place with the abnormal conditions that oil drain pipe does not arrange the oil circuit and leads to, and, can reveal at the first manual valve in manual nitrogen valves of annotating, the metal film failure damage of gas leakage nitrogen valve in the nitrogen pipeline, when the insulating oil backward flow of transformer goes into first oil cup and/or the manual oil drain valve takes place to leak, when the oil leak flows into second oil cup, in time report to the police, make the person on duty can in time take corresponding measure, close second manual valve and/or oil drain valve, thereby the safe operation of transformer and high-voltage electric network has been guaranteed.
Claims (7)
1. An oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device comprises a fire-fighting cabinet, wherein a nitrogen cylinder is arranged in the fire-fighting cabinet, and a nitrogen valve is arranged on a nitrogen-injecting pipeline which is arranged between an air outlet of the nitrogen cylinder and a nitrogen-injecting port of a transformer and is close to the nitrogen-injecting port; be equipped with on the oil extraction pipeline between transformer and the accident oil storage pool and be located oil extraction valve in the fire control cabinet, its characterized in that: the oil discharge valve is a normally open manual oil discharge valve, a normally closed manual oil discharge valve is arranged on an oil discharge pipeline between the oil discharge valve and the transformer, and an oil leakage monitoring part is arranged on the oil discharge pipeline close to an oil outlet of the manual oil discharge valve; the device comprises a nitrogen cylinder, a nitrogen valve, a manual nitrogen injection valve group, a manual nitrogen injection port, a nitrogen injection pipeline and a gas leakage monitoring piece, wherein the manual nitrogen injection valve group is arranged on the nitrogen injection pipeline between the nitrogen cylinder and the nitrogen valve, and the gas leakage monitoring piece is arranged on the nitrogen injection pipeline between the manual nitrogen injection valve group and the nitrogen injection port.
2. The oil-filled transformer oil-draining nitrogen-injecting fire extinguishing device according to claim 1, characterized in that: the manual nitrogen injection valve group comprises a first manual valve and a second manual valve which are connected in series, a diffusing pipe is erected on the nitrogen injection pipeline between the first manual valve and the second manual valve, and a manual diffusing valve is arranged on the diffusing pipe.
3. The oil-filled transformer oil-draining nitrogen-injecting fire extinguishing device according to claim 2, characterized in that: the first manual valve and the manual bleeding valve are both normally closed manual valves; the second manual valve is a normally open manual valve.
4. Oil-immersed transformer oil discharge nitrogen injection extinguishing device according to claim 2 or 3, characterized in that: the gas leakage monitoring piece comprises a first oil cup and a first capacitance type proximity switch, a detection head of the first oil cup faces the first oil cup, the first oil cup is connected with the nitrogen injection pipeline through a first branch pipe, and the installation height of the first oil cup is lower than that of the nitrogen injection pipeline; the oil leakage monitoring part comprises a second oil cup and a second capacitance type proximity switch, the detection head of the second oil cup faces the second oil cup, the second oil cup is connected with the oil discharge pipeline through a second branch pipe, and the installation height of the second oil cup is lower than that of the oil discharge pipeline; the first branch pipe and the second branch pipe are respectively provided with an oil cup valve; the first capacitance type proximity switch and the second capacitance type proximity switch are respectively connected with an audible and visual alarm through a control box.
5. The oil-filled transformer oil-draining nitrogen-injecting fire extinguishing device according to claim 4, characterized in that: the first oil cup and the second oil cup are both made of transparent materials; the oil cup valve is a normally open manual valve.
6. The oil-filled transformer oil-draining nitrogen-injecting fire extinguishing device according to claim 5, characterized in that: the control box comprises an A/D conversion module and a first branch circuit, the first branch circuit is formed by connecting the first capacitance type proximity switch and the second capacitance type proximity switch in parallel and then connecting the first capacitance type proximity switch and the second capacitance type proximity switch in series with a coil of a relay, a power supply input end of the A/D conversion module is correspondingly connected with a live wire and a zero wire of an alternating current power supply through a first air switch, and a power supply output end of the A/D conversion module is correspondingly connected with two ends of the first branch circuit through a second air switch; the audible and visual alarm comprises a field audible and visual alarm and a remote audible and visual alarm, one contact of the relay is connected with the field audible and visual alarm in series, and then one end of the relay is connected with the live wire, and the other end of the relay is connected with the zero line; and after the other contact of the relay is connected with the remote audible and visual alarm in series, one end of the relay is connected with the live wire, and the other end of the relay is connected with the zero line.
7. The oil-filled transformer oil-draining nitrogen-injecting fire extinguishing device according to claim 6, characterized in that: the power indicator lamp is connected with the first branch circuit in parallel; and a fuse is arranged between the live wire and the two contacts of the relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221699477.XU CN217724390U (en) | 2022-07-04 | 2022-07-04 | Oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221699477.XU CN217724390U (en) | 2022-07-04 | 2022-07-04 | Oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device |
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| Publication Number | Publication Date |
|---|---|
| CN217724390U true CN217724390U (en) | 2022-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221699477.XU Active CN217724390U (en) | 2022-07-04 | 2022-07-04 | Oil-immersed transformer oil-discharging nitrogen-injecting fire extinguishing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217724390U (en) |
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2022
- 2022-07-04 CN CN202221699477.XU patent/CN217724390U/en active Active
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