CN111013051B - Verification system and method for oil-discharging and nitrogen-injecting fire extinguishing device of oil-immersed transformer - Google Patents
Verification system and method for oil-discharging and nitrogen-injecting fire extinguishing device of oil-immersed transformer Download PDFInfo
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- CN111013051B CN111013051B CN201911245541.XA CN201911245541A CN111013051B CN 111013051 B CN111013051 B CN 111013051B CN 201911245541 A CN201911245541 A CN 201911245541A CN 111013051 B CN111013051 B CN 111013051B
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
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Abstract
The invention belongs to the technical field of auxiliary facility verification of power transmission and transformation equipment, and particularly relates to a verification system and method for an oil-discharging and nitrogen-injecting fire extinguishing device of an oil-immersed transformer. The invention is characterized in that an oil tank is connected with an oil-discharging and nitrogen-injecting fire extinguishing device through an oil-discharging pipeline and a nitrogen-injecting pipeline; the oil-discharging nitrogen-injecting fire extinguishing device is arranged on the base, an oil guide pipe is embedded in the base, and a video monitor is arranged in the embedded oil guide pipe; the nitrogen bottle is arranged in the oil-discharging nitrogen-injecting fire extinguishing device, and the bottle mouth of the nitrogen bottle is connected with a nitrogen-injecting pipeline; the oil and nitrogen discharging and fire extinguishing device is connected with the analog signal generating device. The invention can grasp in advance whether the oil-discharging and nitrogen-injecting device of the oil-immersed transformer meets the actual operation requirement on site, ensures the reliable action of the oil-discharging and nitrogen-injecting device when the transformer catches fire, reduces or even avoids the occurrence of safety accidents, and effectively protects the safe operation of the transformer and a power grid. The oil-discharging nitrogen-injecting fire extinguishing device can be verified to meet the field use requirement, and the effect of effectively inhibiting the fire disaster of the oil-immersed transformer is achieved.
Description
Technical Field
The invention belongs to the technical field of auxiliary facility verification of power transmission and transformation equipment, and particularly relates to a verification system and method for an oil-discharging and nitrogen-injecting fire extinguishing device of an oil-immersed transformer.
Background
The oil immersed transformer is widely applied to a power system, is an important device for electric energy conversion, and is very important in operation reliability, stability and safety. The oil immersed transformer box body is filled with a large amount of insulating oil, when the transformer is subjected to internal insulation and damp, arc discharge, internal and external short circuits and the like, the fire disaster of the transformer can be caused, if the fire disaster cannot be controlled in time, the explosion of the transformer can be caused, and when the fire disaster is serious, the transformer and other adjacent equipment are dangerous, the safe and stable operation of a power grid is carried out, and the immeasurable loss can be caused.
At present, many oil immersed transformers are provided with oil and nitrogen discharging and fire extinguishing devices, but due to the existence of factors such as numerous manufacturers, various forms, uneven product quality and the like of the oil and nitrogen discharging and fire extinguishing devices, the oil and nitrogen discharging and fire extinguishing devices cannot accurately act, and even the phenomenon that the transformer is damaged due to misoperation occurs.
Disclosure of Invention
The invention provides a verification system and a verification method for an oil-discharging and nitrogen-injecting fire extinguishing device of an oil-immersed transformer, aiming at solving the problems that the oil-discharging and nitrogen-injecting fire extinguishing device of the oil-immersed transformer is installed on a transformer on site without verification, verifying the action performance of the oil-discharging and nitrogen-injecting fire extinguishing device before the oil-discharging and nitrogen-injecting fire extinguishing device is transported to the site for installation, and ensuring the reliable action of the oil-discharging and nitrogen-injecting fire extinguishing device on site after the oil-discharging and nitrogen-injecting fire extinguishing device is installed.
In order to achieve the above object, the present invention is realized by adopting the following technical scheme:
the verification system of the oil-immersed transformer oil-discharging nitrogen-injecting fire-extinguishing device comprises an oil tank, an oil-discharging pipeline and a nitrogen-injecting pipeline, wherein the oil tank is connected with the oil-discharging nitrogen-injecting fire-extinguishing device through the oil-discharging pipeline and the nitrogen-injecting pipeline; the oil-discharging nitrogen-injecting fire extinguishing device is arranged on the base, an oil guide pipe is embedded in the base, and a video monitor is arranged in the embedded oil guide pipe; the nitrogen bottle is arranged in the oil-discharging nitrogen-injecting fire extinguishing device, and the bottle mouth of the nitrogen bottle is connected with a nitrogen-injecting pipeline; the oil and nitrogen discharging and fire extinguishing device is connected with the analog signal generating device.
The outer surface of the oil tank is connected with an oil level gauge.
The oil tank is provided with a first oil drain hole, the first oil drain hole is connected with an oil drain pipeline, and the other end of the oil drain pipeline is connected with a second oil drain hole at the top of the oil and nitrogen discharging fire extinguishing device through a vertical compensator.
The oil discharge pipeline is a right-angle pipeline, the oil discharge pipeline which is horizontally arranged is provided with an oil discharge pipeline ball valve and a horizontal compensator, and the oil discharge pipeline which is vertically arranged is provided with a vertical compensator.
One end of the nitrogen injection pipeline is a nitrogen injection hole, the nitrogen injection hole is connected to the bottom in the oil tank, a nitrogen injection valve is arranged on the nitrogen injection pipeline in the oil tank, and the other end of the nitrogen injection pipeline is connected to a nitrogen output hole on the oil discharge nitrogen injection fire extinguishing device in an extending mode.
The nitrogen bottle is provided with a pressure gauge, and the bottle mouth of the nitrogen bottle is connected with the nitrogen output hole.
The oil and nitrogen discharging and fire extinguishing device is connected with an oil guide pipe, a video monitor is connected to the inner pipe wall of the oil guide pipe, and a monitoring image of the video monitor is displayed on a video monitoring picture of the oil guide pipe.
The surface of the tank body of the oil-discharging nitrogen-injecting fire-extinguishing device is provided with an oil tank overpressure signal receiving end, a fire detector signal receiving end, a breaker tripping signal receiving end and a transformer heavy gas signal receiving end; the box body surface of the analog signal generating device is provided with a transformer heavy gas signal sending end, a breaker tripping signal sending end, a fire detector signal sending end, an oil tank overpressure signal sending end, a transformer heavy gas signal control switch, a breaker tripping signal control switch, a fire detector signal control switch, an oil tank overpressure signal control switch and an oil guide pipe video monitoring picture; the fire detector signal receiving end is connected with the fire detector signal sending end; the circuit breaker tripping signal receiving end is connected with the circuit breaker tripping signal emitting end, and the transformer heavy gas signal receiving end is connected with the transformer heavy gas signal emitting end.
The transformer heavy gas signal on the analog signal generating device controls the transformer heavy gas signal output through the position of the adjusting switch, and the breaker tripping signal control switch on the analog signal generating device controls the breaker tripping signal output through the position of the adjusting switch; the fire detector signal control switch on the analog signal generating device controls the signal output of the fire detector through adjusting the position of the switch; the oil tank overpressure signal control switch on the analog signal generating device controls the output of the oil tank overpressure signal through adjusting the position of the switch.
A verification method of an oil-discharging nitrogen-injecting fire extinguishing device of an oil-immersed transformer comprises the following steps: before verification, firstly opening a nitrogen injection valve of an oil-discharging and nitrogen-injecting fire extinguishing device of the oil-immersed transformer, opening an oil-discharging pipeline ball valve, and recording setting values of heavy gas, tripping of a circuit breaker and overpressure signals of an oil tank of a field transformer into an analog signal generating device, wherein:
case 1: when the action logic is a transformer heavy gas signal, a breaker tripping signal and a fire detector signal, and signals are sent out at the same time, checking;
the transformer heavy gas signal control switch of the analog signal generating device, the tripping signal control switch of the circuit breaker and the signal control switch of the fire detector are arranged in an opened gear, and the oil tank overpressure signal control switch is arranged in a closed gear;
recording the oil level descending condition of an oil tank filled with insulating oil through an oil level gauge, recording the pressure descending condition of a nitrogen cylinder of the oil-discharging and nitrogen-injecting fire extinguishing device through a pressure gauge of the nitrogen cylinder, and recording the oil discharging condition through an oil guide pipe video monitoring picture of an oil guide pipe connected to an analog signal generating device through a video monitor in the oil guide pipe;
the oil level indicator oil level shows that the oil level is reduced to the lower wall of the oil drain hole, the pressure value displayed by the pressure gauge of the nitrogen cylinder of the oil drain nitrogen injection fire extinguishing device is close to zero, the video monitoring picture of the oil guide pipe shows that the embedded oil guide pipe flows through insulating oil, the oil drain nitrogen injection fire extinguishing device is suitable for the on-site operation requirement of the transformer, and if any one of the oil level indicator oil level and the pressure value is not in line with the above-mentioned one, the oil drain nitrogen injection fire extinguishing device is judged to be incapable of meeting the on-site actual operation requirement;
case 2: when the action logic is that a transformer heavy gas signal, a breaker tripping signal and an oil tank overpressure signal send out signals at the same time, checking;
the transformer heavy gas signal control switch, the breaker tripping signal control switch and the oil tank overpressure signal control switch of the analog signal generating device are placed in an on gear, and the fire detector signal control switch is placed in an off gear;
recording the oil level drop condition of an oil tank filled with insulating oil through an oil level gauge, recording the pressure drop condition of a nitrogen cylinder of the oil-discharging and nitrogen-injecting fire extinguishing device through a pressure gauge of the nitrogen cylinder, and recording the oil discharge condition through an oil guide pipe video monitoring picture of an oil guide pipe connected to an analog signal generating device through a video monitor in the oil guide pipe;
the oil level indicator oil level shows that the oil level is reduced to the lower wall of the oil drain hole, the pressure value displayed by the pressure gauge of the nitrogen cylinder of the oil drain nitrogen injection fire extinguishing device is close to zero, the video monitoring picture of the oil guide pipe shows that the embedded oil guide pipe flows through insulating oil, the oil drain nitrogen injection fire extinguishing device is suitable for the on-site operation requirement of the transformer, and if any one of the oil level indicator oil level and the pressure value are not in accordance with the above, the oil drain nitrogen injection fire extinguishing device is judged to be incapable of meeting the on-site actual operation requirement.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
the invention relates to a verification system of an oil-discharging and nitrogen-injecting fire extinguishing device of an oil-immersed transformer, which can verify the oil-discharging and nitrogen-injecting fire extinguishing device of the oil-immersed transformer, and verify the action performance of the oil-discharging and nitrogen-injecting fire extinguishing device by applying a simulated breaker tripping signal, a fire detector signal, an oil tank overpressure signal and the like to the oil-discharging and nitrogen-injecting fire extinguishing device, and guide the oil-discharging and nitrogen-injecting fire extinguishing device to adjust parameters so as to meet the technical requirements of actual operation of the oil-discharging and nitrogen-injecting fire extinguishing device of the oil-immersed transformer on site.
The oil-discharging and nitrogen-injecting device of the oil-immersed transformer can be mastered in advance to judge whether the oil-discharging and nitrogen-injecting device of the oil-immersed transformer meets the actual operation requirement on site or not, so that when the transformer catches fire, the oil-discharging and nitrogen-injecting device can reliably act, the occurrence of safety accidents is reduced or even avoided, and the safe operation of the transformer and a power grid is effectively protected.
The system has the advantages that the oil discharging capability, the nitrogen injecting capability and the like of the oil discharging and nitrogen injecting fire extinguishing device are tested, so that whether the oil discharging and nitrogen injecting fire extinguishing device meets the field use requirement is verified, the action is ensured to be necessary, the misoperation is avoided during the action, and the function of effectively inhibiting the fire disaster of the oil immersed transformer is realized.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the following description will briefly explain the drawings of the embodiments of the present invention. Wherein the showings are for the purpose of illustrating some embodiments of the invention only and not for the purpose of limiting the same.
Fig. 1 is a schematic structural view of the present invention.
In fig. 1: the oil tank 1, the oil level gauge 2, the nitrogen injection hole 3, the nitrogen injection valve 4, the first oil drain hole 5, the ball valve 6, the horizontal compensator 7, the oil drain pipe 8, the vertical compensator 9, the oil drain nitrogen injection fire extinguishing device 10, the nitrogen output hole 11, the second oil drain hole 12, the nitrogen injection pipe 13, the nitrogen bottle 14, the pressure gauge 15, the oil tank overpressure signal receiving end 16, the fire detector signal receiving end 17, the circuit breaker trip signal receiving end 18, the transformer heavy gas signal receiving end 19, the base 20, the oil guide pipe 21, the video monitor 22, the analog signal generating device 23, the transformer heavy gas signal transmitting end 24, the circuit breaker trip signal transmitting end 25, the fire detector signal transmitting end 26, the oil tank overpressure signal transmitting end 27, the transformer heavy gas signal control switch 28, the circuit breaker trip signal control switch 29, the fire detector signal control switch 30, the oil tank overpressure signal control switch 31 and the oil guide pipe video monitoring picture 32.
Description of the embodiments
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are based on directions or positional relationships shown in the drawings, are merely for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be constructed and operated in the specific direction, and thus should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1, fig. 1 is a schematic structural view of the present invention. The invention relates to a verification system of an oil-discharging and nitrogen-injecting fire extinguishing device of an oil-immersed transformer. The invention mainly comprises an oil tank 1 filled with insulating oil, a base 20 of the oil discharging and nitrogen injecting fire extinguishing device, an embedded oil guide pipe 21, an analog signal generating device 23 and other accessories.
Before the oil-immersed transformer oil discharge and nitrogen injection fire extinguishing device is verified, an oil level gauge 2 is arranged on the outer surface of an oil tank 1 filled with insulating oil, a first oil discharge hole 5 is formed in the oil tank 1, an oil discharge pipeline 8 is connected to the first oil discharge hole 5, and the other end of the oil discharge pipeline 8 is connected with a second oil discharge hole 12 at the top of an oil discharge and nitrogen injection fire extinguishing device 10 through a vertical compensator 9.
The oil discharge pipeline 8 is a right-angle pipeline, the oil discharge pipeline 8 which is horizontally arranged is provided with an oil discharge pipeline ball valve 6 and a horizontal compensator 7, and the oil discharge pipeline 8 which is vertically arranged is provided with a vertical compensator 9.
The horizontal compensator 7 plays a role in horizontally compensating the oil discharge pipeline 8, and the vertical compensator 9 plays a role in vertically compensating the oil discharge pipeline 8.
One end of the nitrogen injection pipeline 13 is provided with a nitrogen injection hole 3, the nitrogen injection hole 3 is connected to the bottom in the oil tank 1, a nitrogen injection valve 4 is arranged on the nitrogen injection pipeline 13 in the oil tank, and the other end of the nitrogen injection pipeline 13 is connected to the nitrogen output hole 11 on the oil discharge nitrogen injection fire extinguishing device 10 in an extending mode.
The oil-discharging nitrogen-injecting fire extinguishing device 10 is placed on the base 20, the nitrogen cylinder 14 is arranged inside the oil-discharging nitrogen-injecting fire extinguishing device 10, the nitrogen cylinder 14 of the oil-discharging nitrogen-injecting fire extinguishing device is provided with the pressure gauge 15, the bottle mouth of the nitrogen cylinder 14 is connected with the nitrogen output hole 11 through a stainless steel corrugated pipe, the oil-discharging nitrogen-injecting fire extinguishing device 10 is connected with the embedded oil guide pipe 21 through the stainless steel corrugated pipe, the embedded oil guide pipe 21 is internally provided with the video monitor 22, the video monitor 22 is fixed on the pipe wall of the embedded oil guide pipe 21 through bolts, and the monitoring image of the video monitor 22 in the oil guide pipe is displayed on the oil guide pipe video monitoring picture 32.
The surface of the tank body of the oil-discharging nitrogen-injecting fire extinguishing device 10 is provided with an oil tank overpressure signal receiving end 16, a fire detector signal receiving end 17, a breaker tripping signal receiving end 18 and a transformer heavy gas signal receiving end 19.
The box surface of the analog signal generating device 23 is provided with a transformer heavy gas signal sending end 24, a breaker trip signal sending end 25, a fire detector signal sending end 26, an oil tank overpressure signal sending end 27, a transformer heavy gas signal control switch 28, a breaker trip signal control switch 29, a fire detector signal control switch 30, an oil tank overpressure signal control switch 31 and an oil guide pipe video monitoring picture 32.
The oil tank overpressure signal receiving end 16 is connected with an oil tank overpressure signal sending end 27 arranged on the analog signal generating device 23, and the fire detector signal receiving end 17 is connected with a fire detector signal sending end 26 arranged on the analog signal generating device 23; the breaker tripping signal receiving end 18 on the oil and nitrogen discharging and fire extinguishing device 10 is connected with the breaker tripping signal sending end 25 on the analog signal generating device 23, and the transformer heavy gas signal receiving end 19 on the oil and nitrogen discharging and fire extinguishing device 10 is connected with the transformer heavy gas signal sending end 24 on the analog signal generating device 23.
The transformer heavy gas signal 28 on the analog signal generating device 23 controls the transformer heavy gas signal output by adjusting the position, on or off of the switch, and the breaker tripping signal control switch 29 on the analog signal generating device 23 controls the breaker tripping signal output by adjusting the position, on or off of the switch; the fire detector signal control switch 30 on the analog signal generating device 23 controls the fire detector signal output by adjusting the position of the switch, on or off, and the tank overpressure signal control switch 31 on the analog signal generating device 23 controls the tank overpressure signal output by adjusting the position of the switch, on or off.
The action principle of the oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device is that the device should reliably act when the transformer heavy gas signal, the breaker tripping signal and the fire detector signal send out signals simultaneously or when the transformer heavy gas signal, the breaker tripping signal and the mailbox overpressure signal send out signals simultaneously.
The invention discloses a verification method of an oil-discharging nitrogen-injecting fire extinguishing device of an oil-immersed transformer, which comprises the following steps:
before verification, firstly, a nitrogen injection valve 4 of the oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device is opened, an oil-discharging pipeline ball valve 6 is opened, and setting values of on-site transformer heavy gas, breaker tripping and oil tank overpressure signals are recorded into an analog signal generating device 23.
Case 1: and when the action logic is that the transformer heavy gas signal, the breaker tripping signal and the fire detector signal send out signals at the same time.
The transformer heavy gas signal control switch 28, the breaker trip signal control switch 29 and the fire detector signal control switch 30 of the analog signal generating device 23 are placed in an on gear (on), and the tank over-pressure signal control switch 31 is placed in an off gear (off).
The oil level of the oil tank 1 filled with insulating oil is recorded by the oil level gauge 2, the pressure drop of the nitrogen cylinder 14 of the oil and nitrogen discharging and extinguishing device is recorded by the pressure gauge 15 of the nitrogen cylinder of the oil and nitrogen discharging and extinguishing device, and the oil discharge is recorded by the oil guide pipe video monitoring picture 32 connected to the analog signal generating device 23 by the video monitor 22 in the oil guide pipe.
The oil level indicator 2 indicates that the oil level is reduced to the lower wall of the first oil drain hole 5, the pressure value indicated by the pressure gauge 15 of the nitrogen cylinder of the oil-discharging and nitrogen-injecting fire extinguishing device is close to zero, the oil guide pipe video monitoring picture 32 indicates that the embedded oil guide pipe 21 flows through insulating oil, the oil-discharging and nitrogen-injecting fire extinguishing device is proved to be suitable for the on-site operation requirement of the transformer, and if more than one oil level indicator is not in line with the above-mentioned oil level indicator, the oil-discharging and nitrogen-injecting fire extinguishing device is primarily judged to be incapable of meeting the on-site actual operation requirement.
Case 2: and when the action logic is that the transformer heavy gas signal, the breaker tripping signal and the oil tank overpressure signal send out signals at the same time.
The transformer heavy gas signal control switch 28, the breaker trip signal control switch 29 and the tank over-pressure signal control switch 31 of the analog signal generating device 23 are placed in an on gear (on), and the fire detector signal control switch 30 is placed in an off gear (off).
The oil level of the oil tank 1 filled with insulating oil is recorded by the oil level gauge 2, the pressure drop of the nitrogen cylinder 14 of the oil and nitrogen discharging and fire extinguishing device is recorded by the pressure gauge 15 of the nitrogen cylinder of the oil and nitrogen discharging and fire extinguishing device, and the oil discharge is recorded by the oil guide pipe video monitoring picture 32 connected to the analog signal generating device 23 by the video monitor 22 in the oil guide pipe.
The oil level indicator 2 indicates that the oil level is reduced to the lower wall of the first oil drain hole 5, the pressure value indicated by the pressure gauge 15 of the nitrogen cylinder of the oil-discharging and nitrogen-injecting fire extinguishing device is close to zero, the oil guide pipe video monitoring picture 32 indicates that the embedded oil guide pipe 21 flows through insulating oil, the oil-discharging and nitrogen-injecting fire extinguishing device is proved to be suitable for the on-site operation requirement of the transformer, and if more than one oil level indicator is not in line with the above-mentioned oil level indicator, the oil-discharging and nitrogen-injecting fire extinguishing device is primarily judged to be incapable of meeting the on-site actual operation requirement.
The oil drainage and nitrogen injection fire extinguishing device of the verification system can be used for mastering whether the oil drainage and nitrogen injection device of the oil immersed transformer meets the actual operation requirement on site in advance, so that when the transformer catches fire, the oil drainage and nitrogen injection device can reliably act, the occurrence of safety accidents is reduced or even avoided, and the safe operation of the transformer and a power grid is effectively protected.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to imply that the scope of the disclosure, including the claims, is limited to such examples; the technical features of the above embodiments or in the different embodiments may also be combined within the idea of the invention, the steps may be implemented in any order and there are many other variations of the different aspects of the invention as described above, which are not provided in detail for the sake of brevity.
The embodiments of the invention are intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Therefore, any omission, modification, equivalent replacement, improvement, etc. of the present invention should be included in the scope of the present invention.
Claims (10)
1. An oil-immersed transformer oil drainage nitrogen injection extinguishing device check-up system, characterized by: the oil tank (1) is connected with an oil discharging and nitrogen injecting fire extinguishing device (10) through an oil discharging pipeline (8) and a nitrogen injecting pipeline (13); the oil-discharging nitrogen-injecting fire extinguishing device (10) is arranged on a base (20), an oil guide pipe (21) is embedded in the base (20), and a video monitor (22) is arranged in the embedded oil guide pipe (21); the nitrogen bottle (14) is arranged in the oil-discharging nitrogen-injecting fire extinguishing device (10), and the bottle mouth of the nitrogen bottle (14) is connected with the nitrogen-injecting pipeline (13); the oil and nitrogen discharging and fire extinguishing device (10) is connected with the analog signal generating device (23).
2. The verification system of an oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device according to claim 1, wherein the verification system is characterized by: the outer surface of the oil tank (1) is connected with an oil level gauge (2).
3. The verification system of an oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device according to claim 1, wherein the verification system is characterized by: the oil tank (1) is provided with a first oil drain hole (5), the first oil drain hole (5) is connected with an oil drain pipeline (8), and the other end of the oil drain pipeline (8) is connected with a second oil drain hole (12) at the top of the oil drain nitrogen injection fire extinguishing device (10) through a vertical compensator (9).
4. The verification system of an oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device according to claim 1, wherein the verification system is characterized by: the oil discharge pipeline (8) is a right-angle pipeline, the oil discharge pipeline (8) arranged horizontally is provided with an oil discharge pipeline ball valve (6) and a horizontal compensator (7), and the oil discharge pipeline (8) arranged vertically is provided with a vertical compensator (9).
5. The verification system of an oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device according to claim 1, wherein the verification system is characterized by: one end of the nitrogen injection pipeline (13) is provided with a nitrogen injection hole (3), the nitrogen injection hole (3) is connected to the bottom in the oil tank (1), the nitrogen injection pipeline (13) in the oil tank is provided with a nitrogen injection valve (4), and the other end of the nitrogen injection pipeline (13) is connected to a nitrogen output hole (11) on the oil discharge nitrogen injection fire extinguishing device (10) in an extending mode.
6. The verification system of an oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device according to claim 1, wherein the verification system is characterized by: the nitrogen bottle (14) is provided with a pressure gauge (15), and the bottle mouth of the nitrogen bottle (14) is connected with the nitrogen output hole (11).
7. The verification system of an oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device according to claim 1, wherein the verification system is characterized by: the oil and nitrogen discharging and fire extinguishing device (10) is connected with an oil guide pipe (21), a video monitor (22) is connected to the inner pipe wall of the oil guide pipe (21), and a monitoring image of the video monitor (22) is displayed on an oil guide pipe video monitoring picture (32).
8. The verification system of an oil-immersed transformer oil-discharging and nitrogen-injecting fire extinguishing device according to claim 1, wherein the verification system is characterized by: the oil and nitrogen discharging and fire extinguishing device is characterized in that an oil tank overpressure signal receiving end (16), a fire detector signal receiving end (17), a breaker tripping signal receiving end (18) and a transformer heavy gas signal receiving end (19) are arranged on the surface of a tank body of the oil and nitrogen discharging and fire extinguishing device (10); the box body surface of the analog signal generating device (23) is provided with a transformer heavy gas signal emitting end (24), a breaker tripping signal emitting end (25), a fire detector signal emitting end (26), an oil tank overpressure signal emitting end (27), a transformer heavy gas signal control switch (28), a breaker tripping signal control switch (29), a fire detector signal control switch (30), an oil tank overpressure signal control switch (31) and an oil guide pipe video monitoring picture (32); the fire detector signal receiving end (17) is connected with the fire detector signal emitting end (26); the circuit breaker tripping signal receiving end (18) is connected with the circuit breaker tripping signal emitting end (25), and the transformer heavy gas signal receiving end (19) is connected with the transformer heavy gas signal emitting end (24).
9. The verification system for oil-discharging and nitrogen-injecting fire extinguishing devices of oil-immersed transformers according to claim 8, wherein the verification system is characterized by: the transformer heavy gas signal control switch (28) on the analog signal generating device (23) controls the transformer heavy gas signal output through adjusting the position of the switch, and the breaker tripping signal control switch (29) on the analog signal generating device (23) controls the breaker tripping signal output through adjusting the position of the switch; a fire detector signal control switch (30) on the analog signal generating device (23) controls the signal output of the fire detector by adjusting the position of the switch; an oil tank overpressure signal control switch (31) on the analog signal generating device (23) controls the output of the oil tank overpressure signal through adjusting the position of the switch.
10. A verification method for an oil discharge and nitrogen injection fire extinguishing device of an oil immersed transformer is characterized by comprising the following steps: the method comprises the following steps: before verification, firstly opening a nitrogen injection valve of an oil-discharging and nitrogen-injecting fire extinguishing device of the oil-immersed transformer, opening an oil-discharging pipeline ball valve, and recording setting values of heavy gas, tripping of a circuit breaker and overpressure signals of an oil tank of a field transformer into an analog signal generating device, wherein:
case 1: when the action logic is a transformer heavy gas signal, a breaker tripping signal and a fire detector signal, and signals are sent out at the same time, checking;
the transformer heavy gas signal control switch of the analog signal generating device, the tripping signal control switch of the circuit breaker and the signal control switch of the fire detector are arranged in an opened gear, and the oil tank overpressure signal control switch is arranged in a closed gear;
recording the oil level descending condition of an oil tank filled with insulating oil through an oil level gauge, recording the pressure descending condition of a nitrogen cylinder of the oil-discharging and nitrogen-injecting fire extinguishing device through a pressure gauge of the nitrogen cylinder, and recording the oil discharging condition through an oil guide pipe video monitoring picture of an oil guide pipe connected to an analog signal generating device through a video monitor in the oil guide pipe;
the oil level indicator oil level shows that the oil level is reduced to the lower wall of the oil drain hole, the pressure value displayed by the pressure gauge of the nitrogen cylinder of the oil drain nitrogen injection fire extinguishing device is close to zero, the video monitoring picture of the oil guide pipe shows that the embedded oil guide pipe flows through insulating oil, the oil drain nitrogen injection fire extinguishing device is suitable for the on-site operation requirement of the transformer, and if any one of the oil level indicator oil level and the pressure value is not in line with the above-mentioned one, the oil drain nitrogen injection fire extinguishing device is judged to be incapable of meeting the on-site actual operation requirement;
case 2: when the action logic is that a transformer heavy gas signal, a breaker tripping signal and an oil tank overpressure signal send out signals at the same time, checking;
the transformer heavy gas signal control switch, the breaker tripping signal control switch and the oil tank overpressure signal control switch of the analog signal generating device are placed in an on gear, and the fire detector signal control switch is placed in an off gear;
recording the oil level drop condition of an oil tank filled with insulating oil through an oil level gauge, recording the pressure drop condition of a nitrogen cylinder of the oil-discharging and nitrogen-injecting fire extinguishing device through a pressure gauge of the nitrogen cylinder, and recording the oil discharge condition through an oil guide pipe video monitoring picture of an oil guide pipe connected to an analog signal generating device through a video monitor in the oil guide pipe;
the oil level indicator oil level shows that the oil level is reduced to the lower wall of the oil drain hole, the pressure value displayed by the pressure gauge of the nitrogen cylinder of the oil drain nitrogen injection fire extinguishing device is close to zero, the video monitoring picture of the oil guide pipe shows that the embedded oil guide pipe flows through insulating oil, the oil drain nitrogen injection fire extinguishing device is suitable for the on-site operation requirement of the transformer, and if any one of the oil level indicator oil level and the pressure value are not in accordance with the above, the oil drain nitrogen injection fire extinguishing device is judged to be incapable of meeting the on-site actual operation requirement.
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| CN112881058A (en) * | 2021-03-04 | 2021-06-01 | 国网山西省电力公司电力科学研究院 | Validity checking device and checking method for oil-discharging nitrogen-injecting fire extinguishing device of transformer |
| CN113284710B (en) * | 2021-04-29 | 2022-04-19 | 徐州恒通变压器有限公司 | Oil-immersed transformer capable of preventing oil spilling |
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