CN104821253A - Online plugging device for power SF6 high-voltage circuit breaker with air-tight chamber and method - Google Patents
Online plugging device for power SF6 high-voltage circuit breaker with air-tight chamber and method Download PDFInfo
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- CN104821253A CN104821253A CN201510257096.4A CN201510257096A CN104821253A CN 104821253 A CN104821253 A CN 104821253A CN 201510257096 A CN201510257096 A CN 201510257096A CN 104821253 A CN104821253 A CN 104821253A
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- Prior art keywords
- glue
- frequency conversion
- send
- sealed chamber
- electric power
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
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- Coating Apparatus (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention relates to an online plugging device for a power SF6 high-voltage circuit breaker with an air-tight chamber and a method. The device comprises the air-tight chamber buckled at a leakage point on a wall of the power SF6 high-voltage circuit breaker; and the air-tight chamber is connected onto a glue feeding mouth of a frequency-conversion glue adding device via a bottom glue adding valve. The method comprises steps: through acquiring a pressure detection value of a pressure sensor arranged at the glue feeding mouth, a frequency-conversion glue feeding control circuit in the frequency-conversion glue adding device controls a speed of transporting a plugging glue at the glue feeding mouth. According to the online plugging device for the power SF6 high-voltage circuit breaker with the air-tight chamber and the method provided by the invention, problems of complicated operation, long time consumption, high cost and the like existing in the prior power SF6 high-voltage circuit breaker plugging technology are effectively overcome, the efficiency of handling the plugging work of the power SF6 high-voltage circuit breaker by a power staff can be effectively improved, and the traditional handling method is improved.
Description
Technical field
The present invention relates to SF
6circuit breaker seepage and SF
6the leak stopping process of gas, particularly a kind of electric power SF with sealed chamber
6the online device for plugging of primary cut-out and method.
Background technology
As shown in Figure 1, electric power SF
6on primary cut-out wall owing to manufacturing welding, mounting process is bad, as there is the defects such as sand holes, weld seam, crack, in long-time running, can cause electric power SF
6the inner SF of primary cut-out
6gas permeation, infiltrates electric power SF for avoiding electric welding high temperature by introduced contaminants
6in primary cut-out, traditional method is by electric power SF
6primary cut-out passes through SF after having a power failure
6retracting device, by electric power SF
6sF in primary cut-out
6gas is taken out light and is reclaimed, and after repeatedly rinsing with high pure nitrogen, adopts electric welding that breakthrough is carried out electric welding mending-leakage process, after electric welding mending-leakage process terminates, first that welding slag, impurity cleaning is clean, re-use vacuumize, high pure nitrogen rinses, finally vacuumize again, add SF
6, complete leak stopping work for the treatment of.And this kind of traditional operating process is very complicated, and take time and effort, be unfavorable for that electrical employee processes power failure efficiently.
Summary of the invention
The object of the present invention is to provide a kind of electric power SF with sealed chamber
6the online device for plugging of primary cut-out and method, to overcome the defect existed in prior art.
For achieving the above object, technical scheme of the present invention is: a kind of electric power SF with sealed chamber
6the online device for plugging of primary cut-out, is characterized in that, comprises a button and is located at described electric power SF
6the sealed chamber at breakthrough place on primary cut-out outer wall, this sealed chamber comprises an airtight chamber of matrix; The bottom of described sealed chamber is provided with one and adds glue valve; The described glue valve that adds adds sebific duct through one and is connected with the Jiao Kou that send that a frequency conversion adds adhesive dispenser, and this frequency conversion adds adhesive dispenser injects sealing leakage glue for adding sebific duct described in passing through to the airtight chamber of described matrix; Described frequency conversion adds adhesive dispenser and also comprises a frequency conversion and send glue control circuit, this frequency conversion is sent glue control circuit to send glue pressurised driving circuit and described frequency conversion to add in adhesive dispenser through one to send glue pressurizer to be connected, and described frequency conversion send glue control circuit to send the output of glue pressurizer by controlling this, and then control the speed sending the conveying sealing leakage glue at Jiao Kou place that described frequency conversion adds adhesive dispenser.
In an embodiment of the present invention, the top of described sealed chamber is provided with a vent valve, and this vent valve is used for adding the airtight chamber exhaust of glue process middle concave.
In an embodiment of the present invention, described sealed chamber and described electric power SF
6primary cut-out outer wall is by adhesive tight bond.
In an embodiment of the present invention, the Jiao Kou place that send that described frequency conversion adds adhesive dispenser is provided with a pressure sensor, and in order to detect the sealing leakage glue colloid pressure sending Jiao Kou place, and this pressure sensor and described frequency conversion send glue control circuit to be connected.
In an embodiment of the present invention, described frequency conversion adds adhesive dispenser and also comprises a safety valve; Described safety valve send glue control circuit to be connected through a safety valve drive circuit and described frequency conversion.
Further, a kind of electric power SF with sealed chamber is also provided
6the online blocking method of primary cut-out, is characterized in that, realizes in accordance with the following steps:
S1: sealed chamber is closely detained and is located at electric power SF
6breakthrough place on primary cut-out outer wall, and cover this breakthrough completely;
S2: be connected adding one end of sebific duct with the glue valve that adds bottom described sealed chamber, the Jiao Kou that send that the other end and frequency conversion add adhesive dispenser is connected;
S3: add glue valve described in unlatching and be arranged at the vent valve at described sealed chamber top;
S4: open described frequency conversion and add adhesive dispenser, the described frequency conversion frequency conversion added in adhesive dispenser send glue control circuit to send glue pressurizer by sending the frequency conversion of glue pressurised driving drives to add in adhesive dispenser, send Jiao Kou to carry the speed of sealing leakage glue described in adjustment, and through described in add sebific duct and send glue speed to inject sealing leakage glue in the airtight chamber of described matrix with first;
S5: along with the carrying out of injecting glue process, when described vent valve emerges sealing leakage glue, closes described vent valve, and continues injecting glue;
S6: when described frequency conversion send the force value of glue control circuit through sending the pressure sensor at Jiao Kou place described in being arranged at and detecting to reach the first pressure threshold, described frequency conversion send glue control circuit pass through described in send glue pressurizer adjust described in send Jiao Kou to carry the speed of sealing leakage glue, and through described in add sebific duct and send glue speed to inject sealing leakage glue in the airtight chamber of described matrix with second;
S7: along with the carrying out of injecting glue process, when the force value that described pressure sensor detects reaches the second pressure threshold, closes described frequency conversion and adds adhesive dispenser, stop injecting sealing leakage glue in the airtight chamber of described matrix, and add glue valve described in closing, add sebific duct described in dismounting, complete the injection to sealing leakage glue;
S8: through one curing time threshold value, until sealing leakage glue solidification after, complete electric power SF
6the leak stopping of the breakthrough on primary cut-out outer wall.
In an embodiment of the present invention, by binding agent by described sealed chamber tight bond at described electric power SF
6on primary cut-out wall breakthrough, to ensure to seal completely between this breakthrough and described sealed chamber.
In an embodiment of the present invention, the carrying out of injecting glue process, when described frequency conversion send glue control circuit through send described in described pressure sensor detects Jiao Kou add glue laminated power exceed secure threshold time, described frequency conversion send glue control circuit to drive described safety valve through safety valve drive circuit, carry out safety relief, to ensure that described frequency conversion adds adhesive dispenser safe operation.
Compared to prior art, the present invention has following beneficial effect: a kind of electric power SF with sealed chamber proposed by the invention
6the online device for plugging of primary cut-out and method, cover electric power SF by sealed chamber tight bond
6the breakthrough of primary cut-out, then adds adhesive dispenser by frequency conversion, and sealing leakage glue is injected SF through adding sebific duct
6in the airtight chamber of matrix of circuit breaker breakthrough and sealed chamber, to block breakthrough, after sealing leakage glue solidification, thoroughly handle seepage well; And in this process, the frequency conversion frequency conversion added in adhesive dispenser send glue control circuit to detect by being arranged on the pressure sensor sending Jiao Kou place the pressure sending Jiao Kou place in real time, changes the speed sending Jiao Kou to carry sealing leakage glue; Meanwhile, be also configured with safety valve, to ensure that frequency conversion adds the safe operation of adhesive dispenser.Should with the electric power SF of sealed chamber
6the online device for plugging of primary cut-out and method, without the need to exitting, getting angry without the need to electric welding, effectively overcome existing electric power SF
6the complicated operation existed in primary cut-out leakage stopping technology, length consuming time, high in cost of production problem, effectively raise electrical employee process electric power SF
6the efficiency of primary cut-out plugging operation, improves traditional processing method, with conventional electric power SF
6primary cut-out leak stopping mode has compared huge advantage.
Accompanying drawing explanation
Fig. 1 is electric power SF
6the structural representation of primary cut-out.
Fig. 2 is that in the present invention, in an embodiment, the band of gas has the electric power SF of sealed chamber
6the structural representation of the online device for plugging of primary cut-out.
Fig. 3 is the left view of sealed chamber in an embodiment in the present invention.
Fig. 4 is the front view of gas sealed chamber in an embodiment in the present invention.
Fig. 5 is that in the present invention, in an embodiment, the circuit theory diagrams of glue control circuit are sent in frequency conversion.
Fig. 6 is that in the present invention, in an embodiment, frequency conversion adds the schematic diagram that adhesive dispenser starts to send glue in sealed chamber.
Fig. 7 is that in the present invention, in an embodiment, frequency conversion adds the schematic diagram that adhesive dispenser send glue process in sealed chamber.
Fig. 8 is after in the present invention, in an embodiment, sealed chamber vent valve cuts out, and frequency conversion adds the schematic diagram that adhesive dispenser continues to send glue in sealed chamber.
Fig. 9 is electric power SF in an embodiment in the present invention
6structural representation after leak stopping point leak stopping on primary cut-out wall completes.
[label declaration]: 1-frequency conversion adds adhesive dispenser; 2-safety valve; 3-pressure sensor; 4-adds sebific duct; 5-adds glue valve; 6-sealed chamber; 7-vent valve; 8-binding agent; 9-electric power SF
6primary cut-out; 10-electric power SF
6moving contact in high voltage breaker; 11-electric power SF
6primary cut-out fixed contact; 12-electric power SF
6primary cut-out wall breakthrough; 13-sealing leakage glue; The SF that 14-leaks
6gas; 15-high-voltage conducting wires; 16-insulated porcelain sleeve; The airtight chamber of 17-matrix; 18-send Jiao Kou.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is specifically described.
The invention provides a kind of electric power SF with sealed chamber
6the online device for plugging of primary cut-out, as shown in Fig. 2 ~ 5, comprises a button and is located at described electric power SF
6the sealed chamber 6 at breakthrough 12 place on primary cut-out 9 outer wall, this sealed chamber 6 comprises an airtight chamber 17 of matrix; The bottom of described sealed chamber 6 is provided with one and adds glue valve 5; The described glue valve 6 that adds adds sebific duct 4 through one and is connected with the glue mouth 18 that send that a frequency conversion adds adhesive dispenser 1, and this frequency conversion adds adhesive dispenser 1 injects sealing leakage glue 13 for adding sebific duct 4 described in passing through to the airtight chamber 17 of described matrix; Described frequency conversion adds adhesive dispenser 1 and also comprises a frequency conversion and send glue control circuit, this frequency conversion is sent glue control circuit to send glue pressurised driving circuit and described frequency conversion to add in adhesive dispenser 1 through one to send glue pressurizer to be connected, and described frequency conversion send glue control circuit to send the output of glue pressurizer by controlling this, and then control the speed sending the conveying sealing leakage glue 13 at glue mouth 18 place that described frequency conversion adds adhesive dispenser 1.
Further, in the present embodiment, as shown in Fig. 2 ~ 4, the top of described sealed chamber 6 is provided with a vent valve 7, and this vent valve 7 is for being vented in the airtight chamber of injecting glue process middle concave.
Further, in the present embodiment, as shown in Figure 2, described sealed chamber 6 and described electric power SF
6primary cut-out 9 outer wall is by adhesive 8 tight bond.
Further, in the present embodiment, as shown in Figure 2 and Figure 5, glue mouth 18 place that send that described frequency conversion adds adhesive dispenser is provided with a pressure sensor 3, in order to detect the sealing leakage glue 13 colloid pressure sending glue mouth 18 place, and this pressure sensor 3 and described frequency conversion send glue control circuit to be connected.
Further, in the present embodiment, as shown in Figure 2 and Figure 5, described frequency conversion adds adhesive dispenser 1 and also comprises a safety valve 2; Described safety valve 2 send glue control circuit to be connected through a safety valve drive circuit and described frequency conversion.
A kind of electric power SF with sealed chamber proposed by the invention is understood further in order to allow those skilled in the art
6the online device for plugging of primary cut-out, below in conjunction with this electric power SF with sealed chamber
6the electric power SF with sealed chamber of the online device for plugging of primary cut-out
6the online blocking method of primary cut-out is specifically described, and as shown in Figures 6 to 9, realizes in accordance with the following steps:
S1: sealed chamber 6 is closely detained and is located at electric power SF
6breakthrough 12 place on primary cut-out 9 outer wall, and cover this breakthrough 12 completely;
S2: be connected with the glue valve 5 that adds bottom described sealed chamber 6 one end adding sebific duct 4, the glue mouth 18 that send that the other end and frequency conversion add adhesive dispenser 1 is connected;
S3: add glue valve 5 described in unlatching and be arranged at the vent valve 7 at described sealed chamber 6 top;
S4: open described frequency conversion and add adhesive dispenser 1, the described frequency conversion frequency conversion added in adhesive dispenser 1 send glue control circuit to send glue pressurizer by sending the frequency conversion of glue pressurised driving drives to add in adhesive dispenser, send glue mouth 18 to carry the speed of sealing leakage glue 13 described in adjustment, and through described in add sebific duct 4 and send glue speed to inject sealing leakage glue 13 in the airtight chamber 17 of described matrix with first;
S5: along with the carrying out of injecting glue process, when described vent valve 7 emerges sealing leakage glue 13, closes described vent valve 7, and continues injecting glue;
S6: when described frequency conversion send the force value of glue control circuit through sending the pressure sensor 3 at glue mouth 18 place described in being arranged at and detecting to reach the first pressure threshold, described frequency conversion send glue control circuit pass through described in send glue pressurizer adjust described in send glue mouth 18 to carry the speed of sealing leakage glue 13, and through described in add sebific duct 4 and send glue speed to inject sealing leakage glue 13 in the airtight chamber 17 of described matrix with second;
S7: along with the carrying out of injecting glue process, when the force value that described pressure sensor 13 detects reaches the second pressure threshold, closes described frequency conversion and adds adhesive dispenser 1, stop injecting sealing leakage glue 13 in the airtight chamber 17 of described matrix, and add glue valve 5 described in closing, add sebific duct 4 described in dismounting, electric power SF
6primary cut-out medium completes the injection to sealing leakage glue 13;
S8: through one curing time threshold value, until sealing leakage glue solidification after, complete electric power SF
6the leak stopping of the breakthrough on primary cut-out outer wall.
Further, in the present embodiment, described sealing leakage glue 13 adopts the sealing leakage glue keeping inertia with medium, and this sealing leakage glue can according to corresponding at winter and summer varying environment temperature in concrete leak stopping task, and concrete correspondence carries out the sealing leakage glue selecting different curing temperature.
Further, in the present embodiment, by binding agent by described sealed chamber tight bond at described electric power SF
6on primary cut-out wall breakthrough, to ensure to seal completely between this breakthrough and described sealed chamber; And in the present embodiment, the binding agent of employing is for adopting and electric power S
f6primary cut-out medium keeps the binding agent of inertia, and this can binding agent according to corresponding at winter and summer varying environment temperature in concrete leak stopping task, concrete correspondence carries out the binding agent selecting different Applicable temperature.
Further, in the present embodiment, the carrying out of injecting glue process, when described frequency conversion send glue control circuit through send described in described pressure sensor 3 detects glue mouth 18 add glue laminated power exceed secure threshold time, described frequency conversion send glue control circuit to drive described safety valve 2 through safety valve drive circuit, carry out safety relief, to ensure that described frequency conversion adds adhesive dispenser safe operation.
Further, in the present embodiment, work about electric power personnel observe in the situation process of breakthrough crack at the scene, slotted opening as breakthrough place is larger, should first use the instrument such as iron hammer, pliers by little for crack riveting, and measure the size of breakthrough, make and can cover breakthrough completely and the sealed chamber also leaving suitable surplus, to ensure the stability that follow-up sealed chamber is arranged and fail safe.In order to ensure this electric power SF with sealed chamber
6the online device for plugging of primary cut-out can complete leak stopping task accurate stable, and work about electric power personnel can according to each model electric power SF
6in primary cut-out fill SF
6the difference of gas pressure, the frequency conversion arranged in each plugging operation of concrete correspondence adds the running parameter of adhesive dispenser, as first send glue speed, the first pressure threshold, second send glue speed, secure threshold, the second pressure threshold and curing time threshold value etc.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (8)
1. the electric power SF with sealed chamber
6the online device for plugging of primary cut-out, is characterized in that, comprises a button and is located at described electric power SF
6the sealed chamber at breakthrough place on primary cut-out outer wall, this sealed chamber comprises an airtight chamber of matrix; The bottom of described sealed chamber is provided with one and adds glue valve; The described glue valve that adds adds sebific duct through one and is connected with the Jiao Kou that send that a frequency conversion adds adhesive dispenser, and this frequency conversion adds adhesive dispenser injects sealing leakage glue for adding sebific duct described in passing through to the airtight chamber of described matrix; Described frequency conversion adds adhesive dispenser and also comprises a frequency conversion and send glue control circuit, this frequency conversion is sent glue control circuit to send glue pressurised driving circuit and described frequency conversion to add in adhesive dispenser through one to send glue pressurizer to be connected, and described frequency conversion send glue control circuit to send the output of glue pressurizer by controlling this, and then control the speed sending the conveying sealing leakage glue at Jiao Kou place that described frequency conversion adds adhesive dispenser.
2. the electric power SF with sealed chamber according to claim 1
6the online device for plugging of primary cut-out, is characterized in that, the top of described sealed chamber is provided with a vent valve, and this vent valve is used for adding the airtight chamber exhaust of glue process middle concave.
3. the electric power SF with sealed chamber according to claim 1
6the online device for plugging of primary cut-out, is characterized in that, described sealed chamber and described electric power SF
6primary cut-out outer wall is by adhesive tight bond.
4. the electric power SF with sealed chamber according to claim 1
6the online device for plugging of primary cut-out, is characterized in that, the Jiao Kou place that send that described frequency conversion adds adhesive dispenser is provided with a pressure sensor, and in order to detect the sealing leakage glue colloid pressure sending Jiao Kou place, and this pressure sensor and described frequency conversion send glue control circuit to be connected.
5. the electric power SF with sealed chamber according to claim 4
6the online device for plugging of primary cut-out, is characterized in that, described frequency conversion adds adhesive dispenser and also comprises a safety valve; Described safety valve send glue control circuit to be connected through a safety valve drive circuit and described frequency conversion.
6. one kind based on the electric power SF with sealed chamber described in any one of right 1 to 5
6the electric power SF with sealed chamber of the online device for plugging of primary cut-out
6the online blocking method of primary cut-out, is characterized in that, realizes in accordance with the following steps:
S1: sealed chamber is closely detained and is located at electric power SF
6breakthrough place on primary cut-out outer wall, and cover this breakthrough completely;
S2: be connected adding one end of sebific duct with the glue valve that adds bottom described sealed chamber, the Jiao Kou that send that the other end and frequency conversion add adhesive dispenser is connected;
S3: add glue valve described in unlatching and be arranged at the vent valve at described sealed chamber top;
S4: open described frequency conversion and add adhesive dispenser, the described frequency conversion frequency conversion added in adhesive dispenser send glue control circuit to send glue pressurizer by sending the frequency conversion of glue pressurised driving drives to add in adhesive dispenser, send Jiao Kou to carry the speed of sealing leakage glue described in adjustment, and through described in add sebific duct and send glue speed to inject sealing leakage glue in the airtight chamber of described matrix with first;
S5: along with the carrying out of injecting glue process, when described vent valve emerges sealing leakage glue, closes described vent valve, and continues injecting glue;
S6: when described frequency conversion send the force value of glue control circuit through sending the pressure sensor at Jiao Kou place described in being arranged at and detecting to reach the first pressure threshold, described frequency conversion send glue control circuit pass through described in send glue pressurizer adjust described in send Jiao Kou to carry the speed of sealing leakage glue, and through described in add sebific duct and send glue speed to inject sealing leakage glue in the airtight chamber of described matrix with second;
S7: along with the carrying out of injecting glue process, when the force value that described pressure sensor detects reaches the second pressure threshold, closes described frequency conversion and adds adhesive dispenser, stop injecting sealing leakage glue in the airtight chamber of described matrix, and add glue valve described in closing, add sebific duct described in dismounting, complete the injection to sealing leakage glue;
S8: through one curing time threshold value, until sealing leakage glue solidification after, complete electric power SF
6the leak stopping of the breakthrough on primary cut-out outer wall.
7. the electric power SF with sealed chamber according to claim 6
6the online blocking method of primary cut-out, is characterized in that, by binding agent by described sealed chamber tight bond at described electric power SF
6on primary cut-out wall breakthrough, to ensure to seal completely between this breakthrough and described sealed chamber.
8. the electric power SF with sealed chamber according to claim 6
6the online blocking method of primary cut-out, it is characterized in that, the carrying out of injecting glue process, when described frequency conversion send glue control circuit through send described in described pressure sensor detects Jiao Kou add glue laminated power exceed secure threshold time, described frequency conversion send glue control circuit to drive described safety valve through safety valve drive circuit, carry out safety relief, to ensure that described frequency conversion adds adhesive dispenser safe operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257096.4A CN104821253B (en) | 2015-05-20 | 2015-05-20 | Electric power SF with sealed chamber6The online device for plugging of primary cut-out and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510257096.4A CN104821253B (en) | 2015-05-20 | 2015-05-20 | Electric power SF with sealed chamber6The online device for plugging of primary cut-out and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104821253A true CN104821253A (en) | 2015-08-05 |
| CN104821253B CN104821253B (en) | 2017-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510257096.4A Active CN104821253B (en) | 2015-05-20 | 2015-05-20 | Electric power SF with sealed chamber6The online device for plugging of primary cut-out and method |
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| CN (1) | CN104821253B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261985A (en) * | 2015-11-27 | 2016-01-20 | 国家电网公司 | Transformer oil leakage online plugging assembly and sealing method thereof |
| CN106548901A (en) * | 2017-01-20 | 2017-03-29 | 广东米勒电气有限公司 | A kind of SF6 primary cut-outs with leak detection and leakage mending function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102024609A (en) * | 2009-09-18 | 2011-04-20 | 杭州市电力局 | Method and device for blocking leakage of sulfur hexafluoride |
| JP5210422B2 (en) * | 2011-08-24 | 2013-06-12 | タキゲン製造株式会社 | Locking device for operation rope for switch |
| CN104835628A (en) * | 2015-04-27 | 2015-08-12 | 国家电网公司 | Electrical high voltage oil-filled mutual inductor leakage blocking device using sealing cover and application method thereof |
-
2015
- 2015-05-20 CN CN201510257096.4A patent/CN104821253B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102024609A (en) * | 2009-09-18 | 2011-04-20 | 杭州市电力局 | Method and device for blocking leakage of sulfur hexafluoride |
| JP5210422B2 (en) * | 2011-08-24 | 2013-06-12 | タキゲン製造株式会社 | Locking device for operation rope for switch |
| CN104835628A (en) * | 2015-04-27 | 2015-08-12 | 国家电网公司 | Electrical high voltage oil-filled mutual inductor leakage blocking device using sealing cover and application method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105261985A (en) * | 2015-11-27 | 2016-01-20 | 国家电网公司 | Transformer oil leakage online plugging assembly and sealing method thereof |
| CN106548901A (en) * | 2017-01-20 | 2017-03-29 | 广东米勒电气有限公司 | A kind of SF6 primary cut-outs with leak detection and leakage mending function |
| CN106548901B (en) * | 2017-01-20 | 2018-07-10 | 广东米勒电气有限公司 | A kind of SF with leak detection and leakage mending function6High-voltage circuitbreaker |
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| Publication number | Publication date |
|---|---|
| CN104821253B (en) | 2017-03-08 |
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