CN107104378B - Method for replacing opening and closing valves of 220kV circuit breaker - Google Patents
Method for replacing opening and closing valves of 220kV circuit breaker Download PDFInfo
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- CN107104378B CN107104378B CN201710437441.1A CN201710437441A CN107104378B CN 107104378 B CN107104378 B CN 107104378B CN 201710437441 A CN201710437441 A CN 201710437441A CN 107104378 B CN107104378 B CN 107104378B
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- storage cabinet
- oil
- oil storage
- valve
- circuit breaker
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Abstract
The invention relates to a method for replacing a separating and combining gate valve of a 220kV circuit breaker, which comprises the following steps: pumping out the hydraulic oil in the hydraulic mechanism of the circuit breaker by using a vacuumizing and purifying oil injection device; 1) Closing a separation valve II between the upper oil storage cabinet and the lower oil storage cabinet, opening a separation valve I on the oil discharge pipe, pumping hydraulic oil into the upper oil storage cabinet by using a vacuum pump, and closing the separation valve I; 2) A purifying agent is put into the upper oil storage cabinet to absorb moisture and remove damp of the hydraulic oil; 3) Opening the partition valve II and a pressure relief valve on the upper oil storage cabinet to enable hydraulic oil of the upper oil storage cabinet to flow into the lower oil storage cabinet, and closing the partition valve II and the pressure relief valve; step two: the replacement of the opening and closing gate valves of the circuit breaker and the detection in the mechanism are carried out; step three: the circuit breaker hydraulic mechanism oil return operation 1) opens the separation valve I, opens the vacuum pump to pump the circuit breaker mechanism to the rated pressure, and closes the separation valve I; 2) And opening the oil filtering device to enable the hydraulic oil in the lower oil storage cabinet to return to the breaker hydraulic mechanism. The equipment fault is solved fast and effectively.
Description
Technical Field
The invention relates to a method for replacing a switch-off valve and a switch-on valve of a 220kV circuit breaker.
Background
Currently, there are 9 groups of ZF16-252/Y type combined electrical appliances in Kogyang company, the circuit breaker operating mechanism is an ABB hydraulic disc spring mechanism, and when the switching gate valve is replaced, the hydraulic disc spring mechanism needs to be vacuumized first, so that the replacement can be carried out. And every evacuation all need use the vacuum equipment operation that circuit breaker producer personnel brought, and the vacuum equipment volume of producer is great, and the procedure is complicated to need annotate new hydraulic oil, cause the waste, it is time-consuming, hard to operate, influence equipment and normally put into operation, cause harm for the electric wire netting safe operation.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method for replacing a switching-off valve and a switching-on valve of a 220kV circuit breaker, quickly and effectively solving equipment faults and improving the stable operation of equipment.
In order to realize the purpose, the invention adopts the following technical scheme:
a method for replacing a switch-on/switch-off gate valve of a 220kV circuit breaker comprises the following specific steps:
the method comprises the following steps: pumping out the hydraulic oil in the hydraulic mechanism of the circuit breaker by using a vacuumizing and purifying oil injection device; the vacuumizing and purifying oil injection device comprises an upper oil storage cabinet, a lower oil storage cabinet, a vacuum pump and an oil filtering device, wherein the upper oil storage cabinet is connected with an exhaust hole of a circuit breaker hydraulic mechanism through an oil discharging pipeline, a separation valve I is arranged on the oil discharging pipeline, the upper oil storage cabinet is communicated with the lower oil storage cabinet, a separation valve II is arranged between the upper oil storage cabinet and the lower oil storage cabinet, the upper oil storage cabinet is connected with the vacuum pump, the upper part of the upper oil storage cabinet is connected with a pressure gauge, a pressure release valve is arranged on the upper oil storage cabinet, a purifying agent containing box is arranged in the upper oil storage cabinet, the lower oil storage cabinet is connected with the oil filtering device, and the oil filtering device is connected with the circuit breaker hydraulic mechanism through an oil return pipe; the oil draining operation is as follows:
1) Closing a separation valve II between the upper oil storage cabinet and the lower oil storage cabinet, opening a separation valve I on the oil discharge pipe, pumping hydraulic oil into the upper oil storage cabinet by using a vacuum pump, and closing the separation valve I;
2) A purifying agent is put into the upper oil storage cabinet to absorb moisture and remove damp of the hydraulic oil;
3) Opening the partition valve II and a pressure relief valve on the upper oil storage cabinet to enable hydraulic oil of the upper oil storage cabinet to flow into the lower oil storage cabinet, and closing the partition valve II and the pressure relief valve;
step two: the replacement of the opening and closing gate valves of the circuit breaker and the detection in the mechanism are carried out;
step three: circuit breaker hydraulic mechanism return operation
1) Opening the separation valve I, opening a vacuum pump to pump the breaker mechanism to rated pressure, and then closing the separation valve I;
2) And opening the oil filtering device to enable the hydraulic oil in the lower oil storage cabinet to return to the breaker hydraulic mechanism.
Compared with the prior art, the invention has the beneficial effects that:
the invention avoids the hydraulic oil waste caused by the outflow of the hydraulic oil when the opening and closing valves are replaced. The opening and closing valves and the mechanism can be conveniently replaced without oil for maintenance. The equipment fault is solved fast and effectively, and the stable transportation of the equipment is improved. The vacuumizing and purifying oil injection device is simple to operate and convenient to carry.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: the device comprises an upper oil storage cabinet 1, a lower oil storage cabinet 2, a vacuum pump 3, an oil filtering device 4, an oil discharging pipeline 5, a partition valve I6, a purifying agent containing box 7, a pressure gauge 8, a pressure release valve 9 and a partition valve II10.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
a method for replacing a separating and combining gate valve of a 220kV circuit breaker comprises the following specific steps:
the method comprises the following steps: pumping out the hydraulic oil in the hydraulic mechanism of the circuit breaker by using a vacuumizing and purifying oil injection device; the vacuumizing and purifying oil injection device comprises an upper oil storage cabinet 1, a lower oil storage cabinet 2, a vacuum pump 3 and an oil filtering device 4, wherein the upper oil storage cabinet 1 is connected with an exhaust hole of a circuit breaker hydraulic mechanism through an oil discharge pipeline 5, and a partition valve I6 is arranged on the oil discharge pipeline 5. Go up and store up oil tank 1 and store up oil tank 2 UNICOM down, go up and be equipped with separating valve II10 between oil tank 1 and the lower oil tank 2. The upper oil conservator 1 is connected with a vacuum pump, and the upper part of the upper oil conservator 1 is connected with a pressure gauge 8 and a pressure release valve 9. The upper oil conservator 1 is internally provided with a purifying agent containing box 7. The lower oil conservator 2 is connected with an oil filtering device 4, and the oil filtering device 4 is connected with a breaker hydraulic mechanism 11 through an oil return pipe, as shown in figure 1.
The oil discharge operation is as follows:
1) Closing a separation valve II10 between an upper oil conservator 1 and a lower oil conservator 2, opening a separation valve I6 on an oil discharge pipe 5, pumping hydraulic oil into the upper oil conservator 1 by using a vacuum pump 3, and closing the separation valve I6;
2) A purifying agent is put into the upper oil storage cabinet 1 to absorb moisture and remove damp of the hydraulic oil;
3) Opening a separation valve II10 and a pressure release valve 9 on the upper oil storage cabinet to enable hydraulic oil of the upper oil storage cabinet 1 to flow into the lower oil storage cabinet 2, and closing the separation valve II10 and the pressure release valve 9;
step two: the replacement of the opening and closing gate valves of the circuit breaker and the detection in the mechanism are carried out;
step three: circuit breaker hydraulic mechanism return operation
1) Opening the isolation valve I6, opening the vacuum pump 3 to pump the breaker mechanism 11 to rated pressure, and then closing the isolation valve I6;
2) And opening the oil filtering device 4 to enable the hydraulic oil in the lower oil storage cabinet 2 to return to the circuit breaker hydraulic mechanism.
The foregoing is considered as illustrative only of the principles of the invention and is not to be in any way limiting, since all equivalent changes and modifications are intended to be included within the scope of the appended claims.
Claims (1)
1. A method for replacing a switch-off valve and a switch-on valve of a 220kV circuit breaker is characterized by comprising the following specific steps:
the method comprises the following steps: pumping out the hydraulic oil in the hydraulic mechanism of the circuit breaker by using a vacuumizing and purifying oil injection device; the vacuumizing and purifying oil injection device comprises an upper oil storage cabinet, a lower oil storage cabinet, a vacuum pump and an oil filtering device, wherein the upper oil storage cabinet is connected with an exhaust hole of a circuit breaker hydraulic mechanism through an oil discharging pipeline, a separation valve I is arranged on the oil discharging pipeline, the upper oil storage cabinet is communicated with the lower oil storage cabinet, a separation valve II is arranged between the upper oil storage cabinet and the lower oil storage cabinet, the upper oil storage cabinet is connected with the vacuum pump, the upper part of the upper oil storage cabinet is connected with a pressure gauge, a pressure release valve is arranged on the upper oil storage cabinet, a purifying agent containing box is arranged in the upper oil storage cabinet, the lower oil storage cabinet is connected with the oil filtering device, and the oil filtering device is connected with the circuit breaker hydraulic mechanism through an oil return pipe; the oil discharge operation is as follows:
1) Closing a separation valve II between an upper oil storage cabinet and a lower oil storage cabinet, opening a separation valve I on an oil discharge pipe, pumping hydraulic oil into the upper oil storage cabinet by using a vacuum pump, and closing the separation valve I;
2) A purifying agent is put into the upper oil storage cabinet to absorb moisture and remove damp of the hydraulic oil;
3) Opening the partition valve II and a pressure relief valve on the upper oil storage cabinet to enable hydraulic oil of the upper oil storage cabinet to flow into the lower oil storage cabinet, and closing the partition valve II and the pressure relief valve;
step two: the replacement of the opening and closing gate valves of the circuit breaker and the detection in the mechanism are carried out;
step three: circuit breaker hydraulic mechanism return operation
1) Opening the separation valve I, opening a vacuum pump to pump the breaker mechanism to rated pressure, and then closing the separation valve I;
2) And opening the oil filtering device to enable the hydraulic oil in the lower oil storage cabinet to return to the breaker hydraulic mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437441.1A CN107104378B (en) | 2017-06-09 | 2017-06-09 | Method for replacing opening and closing valves of 220kV circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710437441.1A CN107104378B (en) | 2017-06-09 | 2017-06-09 | Method for replacing opening and closing valves of 220kV circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107104378A CN107104378A (en) | 2017-08-29 |
| CN107104378B true CN107104378B (en) | 2023-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710437441.1A Active CN107104378B (en) | 2017-06-09 | 2017-06-09 | Method for replacing opening and closing valves of 220kV circuit breaker |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09266117A (en) * | 1996-03-28 | 1997-10-07 | Toshiba Fa Syst Eng Kk | Oil-immersed electric machine and oiling method for oil-immersed electric machine |
| CN101931175B (en) * | 2010-08-19 | 2012-10-17 | 河南省电力公司郑州供电公司 | Method for replacing accessory of large transformer without discharging oil by vacuum oil extraction |
| CN101944420A (en) * | 2010-09-14 | 2011-01-12 | 保定天威集团有限公司 | Transformer integral vacuum oiling device and method |
| CN102034591B (en) * | 2010-10-29 | 2012-11-28 | 山东鲁能泰山电力设备有限公司 | Device and method for injecting oil into transformer under vacuum condition |
| CN104362030A (en) * | 2014-11-26 | 2015-02-18 | 国家电网公司 | Hydraulic spring operating mechanism and opening and closing coil replacing method thereof |
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2017
- 2017-06-09 CN CN201710437441.1A patent/CN107104378B/en active Active
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| CN107104378A (en) | 2017-08-29 |
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