CN112670056A - Oil supplementing device and method for on-load tap-changer of transformer - Google Patents
Oil supplementing device and method for on-load tap-changer of transformer Download PDFInfo
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- CN112670056A CN112670056A CN202011457975.9A CN202011457975A CN112670056A CN 112670056 A CN112670056 A CN 112670056A CN 202011457975 A CN202011457975 A CN 202011457975A CN 112670056 A CN112670056 A CN 112670056A
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- 238000000034 method Methods 0.000 title claims abstract description 11
- 230000001502 supplementing effect Effects 0.000 title abstract description 27
- 239000013589 supplement Substances 0.000 claims abstract description 28
- 238000004891 communication Methods 0.000 claims description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The invention relates to the technical field of on-load tap changers of transformers, in particular to an oil supplementing device and method for an on-load tap changer of a transformer, wherein the device comprises a shell, a direct-current oil pump, a controller and a storage battery, wherein an oil outlet and an oil inlet are formed in the shell, a sensor is arranged at the oil outlet, and the oil inlet is connected with an oil storage tank through an oil pipe; the direct-current oil pump is arranged in the shell, an inlet oil pipe of the direct-current oil pump is communicated with the oil inlet, an outlet oil pipe of the direct-current oil pump is communicated with the oil outlet, and the oil inlet is selectively communicated or disconnected with the oil outlet through the direct-current oil pump; the controller is arranged in the shell and is electrically connected with the sensor and the direct-current oil pump; the storage battery provides electric energy for the direct-current oil pump and the controller. The direct-current oil pump replaces the traditional manual oil supplement, and the storage battery is arranged, so that an external power supply is not needed when the device is used; meanwhile, the sensor and the direct-current oil pump are arranged in a matched mode, the direct-current oil pump stops working automatically after oil is supplemented to a preset oil pressure value or a preset oil supplement value, and oil supplement precision and efficiency are improved.
Description
Technical Field
The invention relates to the technical field of on-load tap-changers of transformers, in particular to an oil supplementing device and method for an on-load tap-changer of a transformer.
Background
After the on-load tap-changer operates for a long time, the problems of aging of a sealing rubber ring and the like can occur, so that the oil way is poor in sealing, oil leakage conditions of different degrees occur, or the phenomenon of too low oil level is caused due to the fact that a large amount of oil is taken, insulating oil expands with heat and contracts with cold, and the safe operation of the on-load tap-changer is influenced. At the moment, oil needs to be supplemented to the on-load tap-changer, when the existing on-load tap-changer is supplemented with oil, manual oil supplementation is carried out, an operator needs to control the oil supplementing time length according to the indication of an on-site oil meter and own experience, the oil supplementing precision is poor, and the efficiency is low.
Disclosure of Invention
The invention aims to provide an oil supplementing device and method for an on-load tap-changer of a transformer, wherein an external power supply is not needed during oil supplementing, the oil supplementing time can be automatically adjusted, and the oil supplementing precision and the oil supplementing efficiency are improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
an oil supplementing device for an on-load tap-changer of a transformer comprises:
the oil-saving device comprises a shell, wherein an oil outlet and an oil inlet are formed in the shell, a sensor is arranged at the oil outlet and comprises an oil pressure sensor and an oil flow sensor, and the oil inlet is used for being connected with an oil storage tank through an oil pipe;
the direct-current oil pump is arranged in the shell, an inlet oil pipe of the direct-current oil pump is communicated with the oil inlet, an outlet oil pipe of the direct-current oil pump is communicated with the oil outlet, and the oil inlet is selectively communicated with or disconnected from the oil outlet through the direct-current oil pump;
the controller is arranged in the shell and is electrically connected with the sensor and the direct-current oil pump;
the storage battery provides electric energy for the direct-current oil pump and the controller.
Preferably, a filter is arranged on a communication pipeline between an outlet oil pipe of the direct-current oil pump and the oil outlet.
Preferably, a display is arranged on the shell and electrically connected with the controller.
Preferably, the shell is provided with an indicator light for indicating whether the direct-current oil pump works, and the storage battery provides electric energy for the indicator light.
Preferably, a switch for controlling the start or stop of the oil supplementing device of the on-load tap-changer of the transformer is arranged on the shell.
Preferably, the storage battery is a rechargeable battery, and a battery charging port is formed in the housing.
Preferably, the outer surface of the housing is a smooth curved surface.
The oil supplementing method for the on-load tap-changer of the transformer comprises the following steps of:
s10, the oil inlet is communicated with the oil storage tank, and the oil outlet is communicated with an oil inlet pipe of an on-load tap-changer to be replenished;
and S20, setting a preset oil pressure value or a preset oil supplement value, controlling the direct-current oil pump to work, and stopping the direct-current oil pump when the current oil pressure value measured by the sensor reaches the preset oil pressure value or the current oil supplement value reaches the preset oil supplement value.
Preferably, the controller is capable of determining the corresponding predetermined oil pressure value according to a set target oil level.
Preferably, after the direct-current oil pump stops working, the oil outlet is disconnected from an oil inlet pipe of the on-load tap-changer to be replenished, and the oil inlet is disconnected from the oil storage tank.
The invention has the beneficial effects that: the direct-current oil pump replaces the traditional manual oil supplement, and the storage battery is arranged, so that an external power supply is not needed when the device is used, the use is more convenient and faster, and the limitation of the operating environment is avoided; meanwhile, the current oil pressure value of the oil outlet is detected through the oil pressure sensor, the direct-current oil pump automatically stops working after oil is supplemented to the preset oil pressure value or the current oil supplement value is detected through the oil flow sensor, and the direct-current oil pump automatically stops working after oil is supplemented to the preset oil supplement value, so that the electric control oil supplement of two modes is realized, and the oil supplement precision and the oil supplement efficiency are improved.
Drawings
Fig. 1 is a schematic structural diagram of an oil supplementing device of an on-load tap-changer of a transformer provided by the invention;
fig. 2 is a schematic diagram of the oil supplementing device of the on-load tap-changer of the transformer provided by the invention.
In the figure:
1. a housing; 11. an oil inlet; 12. an oil outlet; 13. a battery charging port;
2. a direct current oil pump;
3. a controller; 31. a sensor;
4. a storage battery; 5. a filter; 6. a display; 7. and an indicator light.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
As shown in fig. 1-2, the present embodiment provides an oil supplementing device for an on-load tap changer of a transformer, which includes a housing 1, a direct current oil pump 2, a controller 3, and a storage battery 4, wherein an oil outlet 12 and an oil inlet 11 are provided on the housing 1, the oil outlet 12 is provided with a sensor 31, the sensor 31 includes an oil pressure sensor and an oil flow sensor, and the oil inlet 11 is used for connecting an oil storage tank through an oil pipe; the direct-current oil pump 2 is arranged in the shell 1, an inlet oil pipe of the direct-current oil pump 2 is communicated with the oil inlet 11, an outlet oil pipe of the direct-current oil pump 2 is communicated with the oil outlet 12, and the oil inlet 11 is selectively communicated with or disconnected from the oil outlet 12 through the direct-current oil pump 2; the controller 3 is arranged in the shell 1 and is electrically connected with the sensor 31 and the direct-current oil pump 2; the battery 4 supplies electric energy to the direct-current oil pump 2 and the controller 3.
In the embodiment, the direct-current oil pump 2 replaces the traditional manual oil supplement, and the storage battery 4 is arranged, so that an external power supply is not needed when the device is used, the use is more convenient and faster, and the limitation of the operation environment is avoided; meanwhile, the current oil pressure value of the oil outlet is detected through the oil pressure sensor, the direct-current oil pump 2 stops working automatically after oil is supplemented to the preset oil pressure value or the current oil supplement value is detected through the oil flow sensor, and the direct-current oil pump 2 stops working automatically after oil is supplemented to the preset oil supplement value, so that electric control oil supplement in two modes is realized, and the oil supplement precision and the oil supplement efficiency are improved.
Further, a filter is arranged on a communicating pipeline between an outlet oil pipe of the direct-current oil pump 2 and the oil outlet 12, so that impurities in oil can be removed, the quality of oil supplement is improved, and the waste of oil can be reduced.
Further, be equipped with display 6 on the casing 1, display 6 is connected with controller 3 electricity, and display 6 can show the current numerical value that sensor 31 surveyed, makes things convenient for the operation personnel to observe the oil supply condition.
Further, be equipped with the pilot lamp 7 that is used for instructing whether direct current oil pump 2 works on casing 1, battery 4 provides the electric energy for pilot lamp 7, and pilot lamp 7 lights and indicates that direct current oil pump 2 is in operating condition, and pilot lamp 7 does not light and indicates that direct current oil pump 2 is in the stop condition, makes things convenient for the operating personnel to observe the state of direct current oil pump 2.
Further, a switch for controlling the start or stop of the oil supplementing device of the on-load tap-changer of the transformer is arranged on the shell 1.
Furthermore, the storage battery 4 is a rechargeable battery, the shell 1 is provided with a battery charging port 13, and the storage battery 4 can be charged when the oil supplementing device of the on-load tap-changer of the transformer is not used, so that the oil supplementing device of the on-load tap-changer of the transformer does not need an external power supply when working.
Further, the outer surface of the shell 1 is a smooth curved surface, so that the shell is easy to carry, and personnel injury and equipment damage caused by collision are reduced.
The embodiment also provides an oil supplementing method for the on-load tap-changer of the transformer, and the oil supplementing device for the on-load tap-changer of the transformer comprises the following steps:
s10, an oil inlet 11 is communicated with an oil storage tank, and an oil outlet 12 is communicated with an oil inlet pipe of an on-load tap-changer to be replenished;
and S20, setting a preset oil pressure value or a preset oil supplement value, controlling the direct-current oil pump 2 to work, and stopping the direct-current oil pump 2 when the current oil pressure value measured by the sensor 31 reaches the preset oil pressure value or the current oil supplement value reaches the preset oil supplement value.
When the constant pressure oil supplement is adopted, the step S20 further includes:
the switch is closed, the controller 3 can convert the set target oil level into a preset oil pressure value, the oil pressure physical quantity corresponding to the oil level of the oil conservator is converted into an electrical signal quantity, the target physical quantity is controlled through the electrical signal quantity, the oil supplementing work is more convenient to operate, the oil supplementing quantity is more accurate, and meanwhile the working efficiency is improved.
When the current oil pressure value reaches 90% of the preset oil pressure value, the controller 3 controls the direct-current oil pump 2 to stop working, after the oil tank stands for 5 seconds, the oil pressure is stable, oil is continuously supplemented to the preset oil pressure value, and the controller 3 controls the direct-current oil pump 2 to stop working for the second time.
When quantitative oil supplement is adopted, the step S20 further includes:
and closing the switch, setting a preset oil supplementing amount, controlling the direct-current oil pump 2 to start working by the controller 3, and controlling the direct-current oil pump 2 to stop working by the controller 3 when the current oil supplementing amount reaches the preset oil supplementing amount.
And after oil supplement is finished, the oil outlet 12 is disconnected with an oil inlet pipe of the on-load tap-changer to be supplemented, and the oil inlet 11 is disconnected with the oil storage tank.
It should be noted that, when the on-load tap-changer oil replenishing device for the transformer is used for replenishing oil to an on-load tap-changer of a certain type for the first time, an operator needs to manually set a target oil level, record the height difference of the oil level and the oil pressure difference between the start and the end, calibrate the corresponding relationship between the oil level and the oil pressure, and store the corresponding relationship between the oil level and the oil pressure into the controller 3 to be used as a reference for subsequent constant-pressure oil replenishment.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a transformer on-load tap-changer mends oily device which characterized in that includes:
the oil tank comprises a shell (1), wherein an oil outlet (12) and an oil inlet (11) are formed in the shell (1), a sensor (31) is arranged at the oil outlet (12), the sensor (31) comprises an oil pressure sensor and an oil flow sensor, and the oil inlet (11) is used for being connected with an oil storage tank through an oil pipe;
the direct-current oil pump (2) is arranged in the shell (1), an inlet oil pipe of the direct-current oil pump (2) is communicated with the oil inlet (11), an outlet oil pipe of the direct-current oil pump (2) is communicated with the oil outlet (12), and the oil inlet (11) is selectively communicated or disconnected with the oil outlet (12) through the direct-current oil pump (2);
the controller (3) is arranged in the shell (1), and is electrically connected with the sensor (31) and the direct-current oil pump (2);
the storage battery (4) provides electric energy for the direct-current oil pump (2) and the controller (3).
2. The on-load tap-changer oil replenishing device of the transformer according to claim 1, characterized in that a filter (5) is arranged on a communication pipeline between an outlet oil pipe of the direct-current oil pump (2) and the oil outlet (12).
3. The on-load tap changer oil replenishing device of the transformer according to claim 1, characterized in that a display (6) is arranged on the housing (1), and the display (6) is electrically connected with the controller (3).
4. The on-load tap changer oil replenishing device of the transformer according to claim 1, characterized in that an indicator lamp (7) for indicating whether the direct current oil pump (2) works or not is arranged on the housing (1), and the storage battery (4) supplies electric energy to the indicator lamp (7).
5. The on-load tap-changer oil recharging device of the transformer according to claim 1, characterized in that a switch for controlling the on-load tap-changer oil recharging device of the transformer to start or stop running is arranged on the housing (1).
6. The on-load tap changer oil replenishing device of a transformer according to claim 1, characterized in that the storage battery (4) is a rechargeable battery, and a battery charging port (13) is provided on the housing (1).
7. The on-load tap changer oil replenishing device of a transformer according to claim 1, characterized in that the outer surface of the housing (1) is a smooth curved surface.
8. A method for oil filling of an on-load tap-changer of a transformer, characterized in that the method for oil filling of an on-load tap-changer of a transformer according to any one of claims 1-7 is used, and comprises the following steps:
s10, the oil inlet (11) is communicated with the oil storage tank, and the oil outlet (12) is communicated with an oil inlet pipe of an on-load tap-changer to be replenished;
s20, setting a preset oil pressure value or a preset oil supplement value, controlling the direct-flow oil pump (2) to work, and stopping the direct-flow oil pump (2) when the current oil pressure value measured by the sensor (31) reaches the preset oil pressure value or the current oil supplement value reaches the preset oil supplement value.
9. The method for recharging on-load tap changer of a transformer according to claim 8, characterized in that said controller (3) is capable of determining said corresponding predetermined oil pressure value according to a set target oil level.
10. The method for replenishing the oil to the on-load tap-changer of the transformer according to claim 8, wherein after the direct-current oil pump (2) stops working, the oil outlet (12) is disconnected with an oil inlet pipe of the on-load tap-changer to be replenished, and the oil inlet (11) is disconnected with the oil storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011457975.9A CN112670056A (en) | 2020-12-10 | 2020-12-10 | Oil supplementing device and method for on-load tap-changer of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011457975.9A CN112670056A (en) | 2020-12-10 | 2020-12-10 | Oil supplementing device and method for on-load tap-changer of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112670056A true CN112670056A (en) | 2021-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011457975.9A Pending CN112670056A (en) | 2020-12-10 | 2020-12-10 | Oil supplementing device and method for on-load tap-changer of transformer |
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| Country | Link |
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| CN (1) | CN112670056A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790399A (en) * | 2021-09-15 | 2021-12-14 | 广东电网有限责任公司 | Automatic oil pressure regulating device for transformer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689762U (en) * | 2010-05-06 | 2010-12-29 | 深圳市旭明电力技术有限公司 | Online oil filter device of intelligent on-load tap changer |
| CN203895228U (en) * | 2014-06-16 | 2014-10-22 | 保定天泰电力设备有限公司 | Online oil purifying device for transformer on-load tap-charger |
| CN106006528A (en) * | 2016-07-28 | 2016-10-12 | 国家电网公司 | Portable transformer bushing oil supplementing device |
| CN206921622U (en) * | 2016-11-10 | 2018-01-23 | 江苏宏宝电力有限公司 | A kind of on-line automatic oil-filtering apparatus of on-load tap changers of transformers |
| CN108597771A (en) * | 2018-04-28 | 2018-09-28 | 国家电网公司 | A kind of portable loaded switch oil strain repairing is changed oil three-in-one unit and its application process |
| CN207966681U (en) * | 2018-03-30 | 2018-10-12 | 江苏伊顿电气科技有限公司 | A kind of oiling transformer device |
| KR102028094B1 (en) * | 2019-08-09 | 2019-10-02 | 주식회사 이호전기 | A transformer vacuum oil filter |
-
2020
- 2020-12-10 CN CN202011457975.9A patent/CN112670056A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201689762U (en) * | 2010-05-06 | 2010-12-29 | 深圳市旭明电力技术有限公司 | Online oil filter device of intelligent on-load tap changer |
| CN203895228U (en) * | 2014-06-16 | 2014-10-22 | 保定天泰电力设备有限公司 | Online oil purifying device for transformer on-load tap-charger |
| CN106006528A (en) * | 2016-07-28 | 2016-10-12 | 国家电网公司 | Portable transformer bushing oil supplementing device |
| CN206921622U (en) * | 2016-11-10 | 2018-01-23 | 江苏宏宝电力有限公司 | A kind of on-line automatic oil-filtering apparatus of on-load tap changers of transformers |
| CN207966681U (en) * | 2018-03-30 | 2018-10-12 | 江苏伊顿电气科技有限公司 | A kind of oiling transformer device |
| CN108597771A (en) * | 2018-04-28 | 2018-09-28 | 国家电网公司 | A kind of portable loaded switch oil strain repairing is changed oil three-in-one unit and its application process |
| KR102028094B1 (en) * | 2019-08-09 | 2019-10-02 | 주식회사 이호전기 | A transformer vacuum oil filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113790399A (en) * | 2021-09-15 | 2021-12-14 | 广东电网有限责任公司 | Automatic oil pressure regulating device for transformer |
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