CN105700571A - Liquid level protection mechanism for power transformer - Google Patents
Liquid level protection mechanism for power transformer Download PDFInfo
- Publication number
- CN105700571A CN105700571A CN201610041763.XA CN201610041763A CN105700571A CN 105700571 A CN105700571 A CN 105700571A CN 201610041763 A CN201610041763 A CN 201610041763A CN 105700571 A CN105700571 A CN 105700571A
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- CN
- China
- Prior art keywords
- power transformer
- liquid level
- tank
- controller
- oil
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- Pending
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
- G05D9/12—Level control, e.g. controlling quantity of material stored in vessel characterised by the use of electric means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a liquid level protection mechanism for a power transformer. The mechanism comprises a power transformer oil tank, a liquid level display device, a controller, an oil pump, and an oil storage tank. An electronic pressure release valve is disposed above the power transformer oil tank, and an electronic oil discharge valve and a one-way valve are disposed below the power transformer oil tank. The oil storage tank is connected with the electronic oil discharge valve, and is connected with the one-way valve through the oil pump. The liquid display device is communicated with the electrically connected power transformer oil tank. The liquid level display device, the electronic pressure release valve, the electronic oil discharge valve and the oil pump are respectively in electrical connection with the controller. The beneficial effects of the invention are that the mechanism achieves the automatic increasing and decreasing of the oil in the power transformer oil tank, improves the detection precision, achieves the remote monitoring and alarm, can achieve the remote operation, guarantees the use safety of an electronic transformer, is high in safety and reliability, is convenient and quick in operation, reduces the labor intensity of a worker, and reduces the production cost.
Description
Technical field
The present invention relates to power transformer correlative technology field, refer in particular to a kind of power transformer liquid level protection mechanism。
Background technology
At present, common transformator is designed with conservator, in one end of conservator equipped with oil level indicator, it has the three oil level lines (or temperature indicatrix) representing that oil temperature is-30 DEG C ,+20 DEG C and+40 DEG C, in order to monitor the height of oil level under different oil temperature。Can decide whether to need to refuel or drain the oil according to these three oil level lines。If when temperature is+20 DEG C, pasta is higher than+20 DEG C of these oil level lines, then it represents that the oil in transformator how, should notify that maintainer drains the oil, and makes oil level be reduced on this oil level line；Under same oil temperature, if pasta lower than+20 DEG C this oil level line, then it represents that the oil in transformator is few, should notify that maintainer refuels。If a large amount of leakage of oils, make oil level reduce rapidly, be low to moderate below Buchholz relay or continue to decline, then should disable this transformator immediately。
Additionally having a kind of transformator, because considering to save cost, have employed cancellation conservator, adopt the version of oil scale and pipe type oil-level gauge, it is on oil tank of transformer top, it is possible to indirect observation pasta height。Pipe type oil-level gauge is primarily adapted for use in oil-immersed full-sealed transformator, is arranged on fuel tank cap of transformer top, the oil level in display fuel tank。Occurring in the form on oil level indicator top that blueness is that oil level is normal when indicating, oil level is more than case lid；Occurring that redness is that oil ga(u)ge is abnormal when indicating, oil level, below case lid, needs suitable repairing。
Above-mentioned oil level gauge for transformer all can not when oil level exception, timely teaching process personnel, simultaneously in repairing with when subtracting oil, it is still necessary to the manual operation of operator, greatly reduces performance accuracy, there is also certain potential safety hazard simultaneously。
Summary of the invention
There is above-mentioned deficiency to overcome in the present invention, it is provided that a kind of automatically increases or decreases fluid and safe and reliable power transformer liquid level protection mechanism in prior art。
To achieve these goals, the present invention is by the following technical solutions:
A kind of power transformer liquid level protection mechanism; including power transformer tank, level display device, controller, oil pump and fuel reserve tank; described power transformer tank be arranged over electronics relief valve; described power transformer tank be connected with electronics fuel outlet valve and check valve; described fuel reserve tank is connected with electronics fuel outlet valve; described fuel reserve tank is connected with check valve by oil pump; described level display device connects with power transformer tank, and described level display device, electronics relief valve, electronics fuel outlet valve and oil pump are all electrically connected with the controller。
Design by electronics relief valve, it is possible to effectively prevent the pressure in power transformer tank excessive and there is potential safety hazard；By the design of electronics fuel outlet valve, coordinate the use of controller, it is possible in the oil mass automatically reduced in power transformer tank, to ensure the normal use of electronic transformer simultaneously；Design by oil pump and check valve, it is possible to automatically increase oil mass to power transformer tank, prevents the oil refluence in power transformer tank simultaneously, damages oil pump；And the oil mass situation being designed to get information about in power transformer tank of level display device so that the duty grasping electronic transformer that operator can be real-time；So design has reached to automatically increase or decrease fluid, and whole process adopts automation mechanized operation to also ensure that the security reliability of operation simultaneously。
As preferably, described level display device includes liquid level meter body, level plate and laser range finder, described level plate is placed in liquid level meter, and this is internal, described laser range finder is placed in the upper end of liquid level meter body and relative with the position of level plate, the upper end of described liquid level meter body is provided with communicating pipe, described liquid level meter body was connected with the upper end of power transformer tank by upper communicating pipe, the lower end of described liquid level meter body is provided with lower communicating tube, described liquid level meter body is connected with the lower end of power transformer tank by lower communicating tube, described laser range finder is electrically connected with the controller。Design by upper communicating pipe and lower communicating tube so that power transformer tank connects with liquid level meter body, it is possible to understand the liquid level in power transformer tank by the intrinsic liquid level of liquid level meter；By laser range finder and level plate with the use of, it is possible to measure the oil mass in power transformer tank accurately, improve certainty of measurement。
As preferably, the upper end of described liquid level meter body and be placed in communicating pipe be arranged over high level alarm, the lower end of described liquid level meter body and be placed in the low-level alarm that is connected with of lower communicating tube, described high level alarm and low-level alarm are all electrically connected with the controller。Being designed to get information about the reason of oil quantity alarming in power transformer tank by high level alarm and low-level alarm, take different measures to solve according to different warning reasons simultaneously, convenient and swift, automaticity is high。
As preferably, the side of described liquid level meter body is provided with observation window。By the design of observation window, in order to the monitor in real time of oil level in power transformer tank。
As preferably, being provided with pressure gage in described power transformer tank, described pressure gage is electrically connected with the controller。By the design of pressure gage, it is possible to detect the pressure condition within power transformer tank accurately, coordinate the design of electronics relief valve, it is possible to adjust the pressure in power transformer tank timely, to ensure the normal use of power transformer simultaneously。
As preferably, being provided with temperature sensor in described power transformer tank, described power transformer tank being provided with air cooling equipment, described temperature sensor and air cooling equipment are all electrically connected with the controller。By the design of temperature sensor, variations in temperature in accurately detection power transformer tank that can be real-time, when temperature is too high, by the design of air cooling equipment, the temperature in power transformer tank can be effectively reduced, to ensure the normal use of power transformer。
As preferably, being provided with humidity sensor in described power transformer tank, described power transformer tank being provided with dessicator, described humidity sensor and dessicator are all electrically connected with the controller。By the design of humidity sensor, it is possible to the real-time humidity change in accurately detection power transformer tank, when humidity is too high, by the design of dessicator, it is possible to effectively reduce the humidity in power transformer tank, to ensure the normal use of power transformer。
As preferably, also including wireless transport module and remote controller, described wireless transport module is electrically connected with the controller, and described remote controller and wireless transport module match。By wireless transport module and remote controller with the use of, can real time data and warning message be sent on remote controller and carry out monitor in real time and warning on the one hand；The relevant parameter in power transformer tank can be controlled on the other hand, to avoid the potential safety hazard of power transformer by Remote。
The invention has the beneficial effects as follows: achieve and automatically increase and the oil mass reduced in power transformer tank, improve accuracy of detection, realize long-range monitoring and warning, long-range operation can be carried out simultaneously and ensure the use safety of electronic transformer, security reliability is high, convenient to operation, reduce employee labour force, reduce production cost。
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention。
In figure: 1. power transformer tank, 2. electronics relief valve, 3. go up communicating pipe, 4. high level alarm, 5. laser range finder, 6. observation window, 7. liquid level meter body, 8. level plate, 9. low-level alarm, 10. lower communicating tube, 11. electronics fuel outlet valve, 12. fuel reserve tanks, 13. oil pumps, 14. check valves。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described。
In embodiment as described in Figure 1, a kind of power transformer liquid level protection mechanism, including power transformer tank 1, level display device, controller, oil pump 13 and fuel reserve tank 12, power transformer tank 1 be arranged over electronics relief valve 2, power transformer tank 1 be connected with electronics fuel outlet valve 11 and check valve 14, fuel reserve tank 12 is connected with electronics fuel outlet valve 11, fuel reserve tank 12 is connected with check valve 14 by oil pump 13, level display device connects with power transformer tank 1, level display device, electronics relief valve 2, electronics fuel outlet valve 11 and oil pump 13 are all electrically connected with the controller。It addition, also include wireless transport module and remote controller, wireless transport module is electrically connected with the controller, and remote controller and wireless transport module match。
Level display device includes liquid level meter body 7, level plate 8 and laser range finder 5, level plate 8 is placed in liquid level meter body 7, laser range finder 5 is placed in the upper end of liquid level meter body 7 and relative with the position of level plate 8, the upper end of liquid level meter body 7 is provided with communicating pipe 3, liquid level meter body 7 is connected by the upper end of upper communicating pipe 3 with power transformer tank 1, the lower end of liquid level meter body 7 is provided with lower communicating tube 10, liquid level meter body 7 is connected with the lower end of power transformer tank 1 by lower communicating tube 10, and laser range finder 5 is electrically connected with the controller。The upper end of liquid level meter body 7 and be placed in communicating pipe 3 be arranged over high level alarm 4, the lower end of liquid level meter body 7 and be placed in be connected with low-level alarm 9, high level alarm 4 and the low-level alarm 9 of lower communicating tube 10 and be all electrically connected with the controller。The side of liquid level meter body 7 is provided with observation window 6。
Being provided with pressure gage in power transformer tank 1, pressure gage is electrically connected with the controller。It is provided with temperature sensor in power transformer tank 1, power transformer tank 1 is provided with air cooling equipment, temperature sensor and air cooling equipment and is all electrically connected with the controller。It is provided with humidity sensor in power transformer tank 1, power transformer tank 1 is provided with dessicator, humidity sensor and dessicator and is all electrically connected with the controller。
Design by upper communicating pipe 3 and lower communicating tube 10 so that power transformer tank 1 connects with liquid level meter body 7, it is possible to understand the liquid level in power transformer tank 1 in real time by the liquid level in liquid level meter body 7；And by laser range finder 5 and level plate 8 with the use of, it is possible to measure the oil mass in power transformer tank 1 accurately, improve certainty of measurement。When high level alarm 4 sends alarm, controller receives the signal of high level alarm 4, then open electronics fuel outlet valve 11 and the oil in power transformer tank 1 is put in fuel reserve tank 12, controlled the closedown of electronics fuel outlet valve 11 simultaneously by the oil mass of monitoring in real time of laser range finder 5 and level plate 8；When low-level alarm 9 sends alarm, controller receives the signal of low-level alarm 9, then open oil pump 13 and the oil in fuel reserve tank 12 is supplied power transformer tank 1 by check valve 14, by check valve 14 be designed to effectively prevent the oil in power transformer tank 1 from pouring in down a chimney, controlled the closedown of electronics fuel outlet valve 11 by the oil mass of monitoring in real time of laser range finder 5 and level plate 8 simultaneously；When pressure gage detects that the pressure in power transformer tank 1 is excessive, controller receives the signal that pressure gage is given, open electronics relief valve 2, and close electronics relief valve 2 by the in real time monitoring of pressure gage and ensure the moderate of pressure in power transformer tank 1, it is possible to effectively prevent the pressure in power transformer tank 1 excessive and there is potential safety hazard；By wireless transport module and remote controller with the use of, can real time data and warning message be sent on remote controller and carry out monitor in real time and warning on the one hand；The relevant parameter in power transformer tank 1 can be controlled on the other hand, to avoid the potential safety hazard of power transformer by Remote。
Claims (8)
1. a power transformer liquid level protection mechanism, it is characterized in that, including power transformer tank (1), level display device, controller, oil pump (13) and fuel reserve tank (12), described power transformer tank (1) be arranged over electronics relief valve (2), described power transformer tank (1) be connected with electronics fuel outlet valve (11) and check valve (14), described fuel reserve tank (12) is connected with electronics fuel outlet valve (11), described fuel reserve tank (12) is connected with check valve (14) by oil pump (13), described level display device connects with power transformer tank (1), described level display device, electronics relief valve (2), electronics fuel outlet valve (11) and oil pump (13) are all electrically connected with the controller。
2. a kind of power transformer liquid level protection mechanism according to claim 1, it is characterized in that, described level display device includes liquid level meter body (7), level plate (8) and laser range finder (5), described level plate (8) is placed in liquid level meter body (7), described laser range finder (5) is placed in the upper end of liquid level meter body (7) and relative with the position of level plate (8), the upper end of described liquid level meter body (7) is provided with communicating pipe (3), described liquid level meter body (7) is connected by the upper end of upper communicating pipe (3) with power transformer tank (1), the lower end of described liquid level meter body (7) is provided with lower communicating tube (10), described liquid level meter body (7) is connected by the lower end of lower communicating tube (10) with power transformer tank (1), described laser range finder (5) is electrically connected with the controller。
3. a kind of power transformer liquid level protection mechanism according to claim 2; it is characterized in that; the upper end of described liquid level meter body (7) and be placed in communicating pipe (3) be arranged over high level alarm (4); the lower end of described liquid level meter body (7) and be placed in lower communicating tube (10) be connected with low-level alarm (9), described high level alarm (4) and low-level alarm (9) are all electrically connected with the controller。
4. a kind of power transformer liquid level protection mechanism according to Claims 2 or 3, is characterized in that, the side of described liquid level meter body (7) is provided with observation window (6)。
5. a kind of power transformer liquid level protection mechanism according to claim 1, is characterized in that, being provided with pressure gage in described power transformer tank (1), described pressure gage is electrically connected with the controller。
6. a kind of power transformer liquid level protection mechanism according to claim 1; it is characterized in that; it is provided with temperature sensor in described power transformer tank (1); being provided with air cooling equipment in described power transformer tank (1), described temperature sensor and air cooling equipment are all electrically connected with the controller。
7. a kind of power transformer liquid level protection mechanism according to claim 1; it is characterized in that; it is provided with humidity sensor in described power transformer tank (1); being provided with dessicator in described power transformer tank (1), described humidity sensor and dessicator are all electrically connected with the controller。
8. a kind of power transformer liquid level protection mechanism according to claim 1, is characterized in that, also including wireless transport module and remote controller, described wireless transport module is electrically connected with the controller, and described remote controller and wireless transport module match。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610041763.XA CN105700571A (en) | 2016-01-21 | 2016-01-21 | Liquid level protection mechanism for power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610041763.XA CN105700571A (en) | 2016-01-21 | 2016-01-21 | Liquid level protection mechanism for power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105700571A true CN105700571A (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610041763.XA Pending CN105700571A (en) | 2016-01-21 | 2016-01-21 | Liquid level protection mechanism for power transformer |
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| Country | Link |
|---|---|
| CN (1) | CN105700571A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375504A (en) * | 2018-11-06 | 2019-02-22 | 江西北斗变电科技有限公司 | The method of winding insulation bubble formation control based on Fuzzy Neural PID control |
| CN114018367A (en) * | 2021-11-04 | 2022-02-08 | 广东电网有限责任公司 | Transformer oil conservator oil level monitoring device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794812A (en) * | 1980-12-05 | 1982-06-12 | Fuji Electric Co Ltd | Oil level control method of hydraulic tank for emergent use |
| CN202453746U (en) * | 2012-02-23 | 2012-09-26 | 宁波东博电力科技有限公司 | Automatic oil level regulating system of transformer |
| CN203659571U (en) * | 2013-11-15 | 2014-06-18 | 宋红庆 | Comprehensive protection device and system of transformer |
| CN203746612U (en) * | 2014-01-02 | 2014-07-30 | 四川高精净化设备有限公司 | Vacuum oil injection machine with automatic oil level control function |
| CN203966751U (en) * | 2014-07-22 | 2014-11-26 | 浙江绿能电力科技有限公司 | Novel oil-filled transformer |
| CN204178868U (en) * | 2014-10-29 | 2015-02-25 | 湘潭华夏特种变压器有限公司 | The auto-oiled Fuel Tanking Unit of a kind of transformer |
| CN104766697A (en) * | 2014-01-02 | 2015-07-08 | 四川高精净化设备有限公司 | Vacuum oil filling machine capable of automatically controlling oil level |
-
2016
- 2016-01-21 CN CN201610041763.XA patent/CN105700571A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5794812A (en) * | 1980-12-05 | 1982-06-12 | Fuji Electric Co Ltd | Oil level control method of hydraulic tank for emergent use |
| CN202453746U (en) * | 2012-02-23 | 2012-09-26 | 宁波东博电力科技有限公司 | Automatic oil level regulating system of transformer |
| CN203659571U (en) * | 2013-11-15 | 2014-06-18 | 宋红庆 | Comprehensive protection device and system of transformer |
| CN203746612U (en) * | 2014-01-02 | 2014-07-30 | 四川高精净化设备有限公司 | Vacuum oil injection machine with automatic oil level control function |
| CN104766697A (en) * | 2014-01-02 | 2015-07-08 | 四川高精净化设备有限公司 | Vacuum oil filling machine capable of automatically controlling oil level |
| CN203966751U (en) * | 2014-07-22 | 2014-11-26 | 浙江绿能电力科技有限公司 | Novel oil-filled transformer |
| CN204178868U (en) * | 2014-10-29 | 2015-02-25 | 湘潭华夏特种变压器有限公司 | The auto-oiled Fuel Tanking Unit of a kind of transformer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109375504A (en) * | 2018-11-06 | 2019-02-22 | 江西北斗变电科技有限公司 | The method of winding insulation bubble formation control based on Fuzzy Neural PID control |
| CN109375504B (en) * | 2018-11-06 | 2022-04-19 | 江西北斗变电科技有限公司 | Winding insulation bubble generation control method based on fuzzy neural network PID control |
| CN114018367A (en) * | 2021-11-04 | 2022-02-08 | 广东电网有限责任公司 | Transformer oil conservator oil level monitoring device |
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Application publication date: 20160622 |