CN205943930U - Transformer is buchholz relay self -bleeding device for on -load tap -changer - Google Patents
Transformer is buchholz relay self -bleeding device for on -load tap -changer Download PDFInfo
- Publication number
- CN205943930U CN205943930U CN201620931212.6U CN201620931212U CN205943930U CN 205943930 U CN205943930 U CN 205943930U CN 201620931212 U CN201620931212 U CN 201620931212U CN 205943930 U CN205943930 U CN 205943930U
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- gas relay
- oil
- load tap
- controller
- changer
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Abstract
The utility model discloses a transformer is buchholz relay self -bleeding device for on -load tap -changer, collector box upper end opening pass through air duct and buchholz relay sealing connection, and the lower extreme opening is the oil inlet of sealing connection oil drainage valve and solenoid valve in proper order, first, two, three signal input part of controller connect the normally open contact K2 and the manual normally open switch K3 of buchholz relay alarm signal's normally open contact K1, on -load tap -changer's pressure regulating relay respectively, connect behind coil that first, the live wire L1 that two, three signal output part one end were all connected of controller, one other end connect the solenoid valve and the stop button K5 zero line N, another connects behind the alarm indicator and the zero line N that connects behind the stop button K5, zero line N connects behind a third connection audible alarm ware and the stop button K5. This device can overhaul on -load tap -changer in interior gas or the warning of automatic discharge on -load tap -changer.
Description
Technical field
The utility model is related to a kind of on-load tap changers of transformers gas relay automatic exhaust device.
Background technology
On-load tap changers of transformers is in operation in grease chamber and can produce gas, and is gathered in gas relay, when having
The air accumulation producing in on-load shunting switch to a certain amount of when, gas relay can send alarm signal.Existing loaded tap-off is opened
When pass gas relay sends alarm signal, after needing staff to handle work ticket, take safety measures according to operational procedure,
Climb up transformer or open air relief cock in step down side and carry out artificial bleed air operation, and for unattended transformer station,
The staff scene that will arrive in the very nick of time manually is operated venting.It is meanwhile, whether normal in order to judge that load ratio bridging switch runs,
The time interval reported to the police twice before and after also wanting manual record gas relay or the accumulative action frequency of load ratio bridging switch, to sentence
Surely it is to gas relay venting or load ratio bridging switch to be overhauled.So, current manual mode of operation's work is numerous
Trivial, working strength is big, activity duration length, the continuity of impact power supply and increase unsafe factor.
Content of the invention
The purpose of this utility model is exactly to solve the above-mentioned problems in the prior art, provides a kind of transformer to have load point
Connect switch gas relay automatic exhaust device, when gas relay is reported to the police, in the case of charging operation, this device energy
The gas being automatically drained out in load ratio bridging switch or warning are overhauled to load ratio bridging switch, and can automatically judge it is to discharge gas
Body still warns maintenance load ratio bridging switch；Greatly shorten the activity duration, reduce labour intensity, improve operational security it is ensured that
Power supply continuity.
For achieving the above object, technical solution of the present utility model is：A kind of on-load tap changers of transformers gas
Body relay automatic exhaust device, it includes wireway, collector box, oil discharging valve, magnetic valve, catchment cup, controller and cabinet；
Collector box, oil discharging valve, magnetic valve, catchment cup and controller are fixedly mounted in cabinet；Collector box upper end open passes through air guide
Pipe is tightly connected with gas relay, and its lower ending opening is tightly connected the oil-feed of oil discharging valve and magnetic valve successively by pipe
Mouthful；The oil-out of magnetic valve is just to oil-collecting rim of a cup；First signal input part of controller connects gas relay alarm signal
Normally opened contact K1, its secondary signal input connects the normally opened contact K2 of the Voltage regulating relay of load ratio bridging switch, its 3rd letter
Number input connects manual normal open switch K3；First signal output part one end of controller connects the live wire L1 of power supply, the other end
Zero-power line N is connected, its secondary signal output end one end connects the fire of power supply after the coil of connection magnetic valve and stop button K5
Line L1, connects zero-power line N after the other end connects alarm lamp and after stop button K5, its 3rd signal output part one end is even
Meet the live wire L1 of power supply, the other end connects zero-power line N after connecting voice guard and stop button K5.
The normally opened contact K2 of the Voltage regulating relay of load ratio bridging switch controls controller automatically to read load ratio bridging switch
Accumulative action frequency, interval time and load ratio bridging switch action frequency that controller can be reported to the police before and after recording twice.Work as gas
During the normally opened contact K1 closure of alarm relay signal, the loaded tap-off that controller last time is reported to the police and records between specifically reporting to the police
The load ratio bridging switch that the interval time value reported to the police with last time of the accumulative action frequency of switch and record is set with controller moves
Make time numerical value and interval time value compares, if being not less than setting value, the first signal output part two ends of controller are connected, electromagnetism
Valve is opened, and gas relay is vented, and after gas relay drains gas, the normally opened contact K1 of gas relay alarm signal opens
Open, controller signals, close magnetic valve, gas relay exhaust terminates, if less than setting value, then the second letter of controller
Number output end and the 3rd signal output part two ends are also turned on, and the indoor indicator lamp of Background control lights, alarm sounds, warning
Operator on duty overhauls to load ratio bridging switch, and the utility model achieves the automatic exhaust to gas relay or warning inspection
Have on-load shunting switch dual-use function.
It is further preferred that the utility model also includes pressure sensor, pressure sensor is sealedly connected on gas relay
On the connected entrance of device upper end, its setting valve is more than oil pressure during gas relay alarm signal, less than when gas in gas relay
The scale of construction reaches oil pressure during the 1/2 of gas relay volume；The normally opened contact K2 of pressure sensor is connected to the of cpu controller
On four signal input part K4.When the normally opened contact K2 of pressure sensor closes, controller will be reported to the police and specifically be reported to the police it last time
Between record the accumulative action frequency of load ratio bridging switch and record and last time report to the police interval time value with controller set
Load ratio bridging switch action frequency value and interval time value compare, if being not less than setting value, the first signal of controller is defeated
Go out to hold two ends to connect, magnetic valve is opened, gas relay is vented, after gas relay drains gas, gas relay alarm signal
Number normally opened contact K1 open, controller signal, close magnetic valve, gas relay exhaust terminate, if less than setting value,
Then the secondary signal output end of controller and the 3rd signal output part two ends are also turned on, and the indoor indicator lamp of Background control is bright
Rise, alarm sounds, warning operator overhauls to load ratio bridging switch.The access of pressure sensor, makes gas relay
Device warning system is damaged when can not report to the police, and gas relay reaches and remains able to during exhaust conditions be vented, and further increases this
The reliability of utility model.
When gas relay is reported to the police, in the case of charging operation, the utility model can be automatically drained out loaded tap-off and open
Gas inside the Pass or warning are overhauled to load ratio bridging switch, and can automatically judge to discharge gas or warn maintenance to have load
Shunting switch.Substantially reduce the activity duration, reduce labour intensity, improve operational security it is ensured that power supply continuity.
Brief description
Fig. 1 is structural representation of the present utility model；
Fig. 2 is circuit connection diagram of the present utility model.
Specific embodiment
With specific embodiment, the utility model is further described below in conjunction with the accompanying drawings.
Embodiment 1, as depicted in figs. 1 and 2, the present embodiment includes wireway 5, pressure sensor 7, collector box 3, fuel outlet valve
Door 2, magnetic valve 1, catchment cup 11, controller CPU 9 and cabinet 12.Pressure sensor 7 is sealedly connected on gas relay 6 upper end
Connected entrance on, its setting valve be more than gas relay alarm signal when oil pressure, less than when in gas relay gas flow reach
To gas relay volume 1/2 when oil pressure.Collector box 3, oil discharging valve 2, magnetic valve 1, catchment cup 11 and controller CPU 9
It is fixedly mounted in cabinet 12.Collector box 3 upper end open is tightly connected with gas relay 6 by wireway 5, its lower ending opening
Oil discharging valve 2 and the oil-in of magnetic valve 1 are tightly connected successively by pipe.The oil-out of magnetic valve 1 is just to 11 mouthfuls of catchment cup.
The first signal input part X1 of controller CPU 9 connects the normally opened contact K1 of gas relay 6 alarm signal by holding wire 8,
Its secondary signal input X2 connects the normally opened contact K2 of the Voltage regulating relay of load ratio bridging switch by holding wire 8, and it the 3rd
Signal input part X3 connects manual normal open switch K3, and its 4th signal input part X4 is connected to the normally opened contact of pressure sensor 7
On K4.First signal output part Q1 one end Y1 of controller CPU 9 connects the live wire L1 of power supply, and other end Y11 connects magnetic valve 1
Coil 15 and stop button K5 after connect zero-power line N, its secondary signal output end Q2 one end Y2 connect power supply live wire L1,
Zero-power line N, its 3rd signal output part Q3 one end is connected after other end Y21 connects alarm lamp 14 and after stop button K5
Y3 connects the live wire L1 of power supply, and other end Y31 connects zero-power line N after connecting voice guard 13 and stop button K5.
Embodiment 2, the other structures of the present embodiment, with embodiment 1, are that it does not have pressure sensor 7.
Above-described embodiment is only preferred and exemplary, and those skilled in the art can be carried out according to the description of this patent
The improvement of equivalent technologies, it is all in the protection domain of this patent.
Claims (2)
1. a kind of on-load tap changers of transformers with gas relay automatic exhaust device it is characterised in that：It include wireway,
Collector box, oil discharging valve, magnetic valve, catchment cup, controller and cabinet；Collector box, oil discharging valve, magnetic valve, catchment cup and control
Device processed is fixedly mounted in cabinet；Collector box upper end open is tightly connected with gas relay by wireway, its lower ending opening
It is tightly connected the oil-in of oil discharging valve and magnetic valve by pipe successively；The oil-out of magnetic valve is just to oil-collecting rim of a cup；Control
First signal input part of device connects the normally opened contact K1 of gas relay alarm signal, and its secondary signal input is connected with load
The normally opened contact K2 of the Voltage regulating relay of shunting switch, its 3rd signal input part connects manual normal open switch K3；Controller
First signal output part one end connects the live wire L1 of power supply, connects electricity after the coil of other end connection magnetic valve and stop button K5
Source zero line N, its secondary signal output end one end connect power supply live wire L1, the other end connect alarm lamp after and stop button
After K5 connect zero-power line N, its 3rd signal output part one end connect power supply live wire L1, the other end connect voice guard and
Zero-power line N is connected after stop button K5.
2. on-load tap changers of transformers according to claim 1 gas relay automatic exhaust device, its feature exists
In：It also includes pressure sensor, and pressure sensor is sealedly connected on the connected entrance of gas relay upper end, and its setting valve is big
Oil pressure when gas relay alarm signal, less than when in gas relay gas flow reach the 1/2 of gas relay volume
When oil pressure；The normally opened contact K2 of pressure sensor is connected on the 4th signal input part K4 of cpu controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620931212.6U CN205943930U (en) | 2016-08-24 | 2016-08-24 | Transformer is buchholz relay self -bleeding device for on -load tap -changer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620931212.6U CN205943930U (en) | 2016-08-24 | 2016-08-24 | Transformer is buchholz relay self -bleeding device for on -load tap -changer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205943930U true CN205943930U (en) | 2017-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620931212.6U Active CN205943930U (en) | 2016-08-24 | 2016-08-24 | Transformer is buchholz relay self -bleeding device for on -load tap -changer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205943930U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284324A (en) * | 2021-05-08 | 2021-08-20 | 国网山西省电力公司忻州供电公司 | Intelligent on-load gas exhaust device of transformer |
-
2016
- 2016-08-24 CN CN201620931212.6U patent/CN205943930U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113284324A (en) * | 2021-05-08 | 2021-08-20 | 国网山西省电力公司忻州供电公司 | Intelligent on-load gas exhaust device of transformer |
| CN113284324B (en) * | 2021-05-08 | 2022-07-05 | 国网山西省电力公司忻州供电公司 | Intelligent on-load gas exhaust device of transformer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |