CN111678659A - Leakage detection method for porcelain knob type circuit breaker - Google Patents
Leakage detection method for porcelain knob type circuit breaker Download PDFInfo
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- CN111678659A CN111678659A CN202010516916.8A CN202010516916A CN111678659A CN 111678659 A CN111678659 A CN 111678659A CN 202010516916 A CN202010516916 A CN 202010516916A CN 111678659 A CN111678659 A CN 111678659A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
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Abstract
The invention relates to a leakage detection method for a porcelain knob type circuit breaker, which comprises the following steps: firstly, stuffing materials are stuffed on a bracket of a circuit breaker to be subjected to leakage detection and a bracket of an operating mechanism; then, the circuit breaker is sent into a special leak detection system; before leak detection is carried out, SF in a leak detection room needs to be detected firstly6The concentration of the leakage detecting room is detected, after the composite leakage detecting standard of the leakage detecting room is ensured, an upper air inlet and an air outlet of the leakage detecting room are closed, leakage detection of a circuit breaker in the leakage detecting room is started, leakage detection is finished after a certain time, and then a leakage detector is respectively inserted into each leakage detecting hole in the leakage detecting room for detection; and after the leakage detection is finished, taking out the breaker. The invention has the advantages that: through the cooperation of special leak detection system, thereby realized the short-term test to the circuit breaker, before the leak detection moreover, can be earlier to the SF in the leak detection room6The concentration of the sample is detected, and the accuracy of a detection result is ensured.
Description
Technical Field
The invention relates to the field of circuit breaker detection, in particular to a porcelain knob type circuit breaker leakage detection method.
Background
The high-voltage circuit breaker (or called high-voltage switch) not only can cut off or close the no-load current and the load current in the high-voltage circuit, but also can cut off the overload current and the short-circuit current through the action of a relay protection device when the system has a fault, and has quite perfect arc extinguishing structure and enough current breaking capacity. High-voltage circuit breakers are classified into oil circuit breakers, air circuit breakers, vacuum circuit breakers, sulfur hexafluoride circuit breakers, and the like, according to arc extinction. According to the operation property, the device can be divided into an electric mechanism, a pneumatic mechanism, a hydraulic mechanism, a spring energy storage mechanism and a manual mechanism. According to the structure type, the device can be divided into a porcelain column type and a pot type. The tank type circuit breaker is suitable for areas with high earthquake intensity, high altitude, high coldness and more serious pollution; the porcelain knob type is suitable for general areas. According to the operation mode, the method can be divided into split-phase operation and three-phase mechanical linkage. The circuit breakers of 330kV and above are mostly in split-phase operation type, the circuit breakers of 220kV can be in three-phase mechanical linkage or split-phase operation, and the circuit breakers of 110kV and below are mostly in three-phase mechanical linkage.
The knob insulator type circuit breaker is the important equipment of guaranteeing the safe operation of superhigh pressure or extra-high voltage electric power system, and the fracture of circuit breaker supports at the top with the knob insulator, and the knob insulator both has regarded as insulating usefulness, also uses as support piece.
The porcelain column type circuit breaker usually uses sulfur hexafluoride gas as an internal insulation and arc extinguishing medium, so that after the porcelain column type circuit breaker is produced, the porcelain column type circuit breaker needs to be subjected to detection of leakage detection to ensure the qualification of products. And the traditional leak detection mode is that a detection bag is sleeved outside the circuit breaker to detect the concentration of sulfur hexafluoride in the bag, then the detection bag waits for 12-24 hours, and the amplitude of the change of the concentration of the sulfur hexafluoride in the bag is seen, so that whether the circuit breaker leaks or not is judged. However, in such a detection mode, each circuit breaker needs to be subjected to multiple operations such as bagging and sealing during detection, which is relatively complicated, and has requirements on the concentration of sulfur hexafluoride in a factory building during bagging, and when the concentration of sulfur hexafluoride is too high, a leak detector cannot accurately identify the change of the concentration in the bag after 12-24 hours. In addition, the leakage of the detection bag does not accurately judge the leakage condition of the breaker, so that the detection result is not accurate.
Disclosure of Invention
The invention aims to solve the technical problem of providing a porcelain column type circuit breaker leak detection method which is convenient to detect, high in efficiency and accurate in detection result.
In order to solve the technical problems, the technical scheme of the invention is as follows: a porcelain knob type circuit breaker leak detection method is characterized in that: comprises the following steps
S1: before leak detection is carried out, fillers are stuffed on a bracket of a circuit breaker to be subjected to leak detection and a bracket of an operating mechanism, so that adjacent phase columns of the circuit breaker and the operating mechanism and the bracket of the operating mechanism are separated;
s2: then, the circuit breaker is sent into a special leakage detecting system, the leakage detecting system comprises a leakage detecting room, the leakage detecting room is of a hollow cuboid structure with an open side end, the open side of the leakage detecting room is a feeding side, an electric rolling door is further arranged on the feeding side of the leakage detecting room, the electric rolling door is mounted on the leakage detecting room through a rolling door support, a sealing strip is further arranged between the rolling door support and the side wall of the leakage detecting room, the rolling door support is driven by pressing cylinders mounted on two sides of the leakage detecting room to be pressed on the side end of the leakage detecting room, the opening and closing of the feeding side of the leakage detecting room are achieved through the opening and closing of the electric rolling door, an air inlet is arranged at the upper side end of the leakage detecting room, the air inlet is connected to the outer side of a factory building through an exhaust pipeline, an air outlet is arranged at the lower side end, the placing supporting plate is fixed in a leak detection room, the leak detection room is also provided with a plurality of leak detection holes, and each leak detection hole is plugged with a sealing plug matched with the leak detection hole;
when the leakage detection room is placed, firstly, the electric rolling door is opened, then the circuit breaker is sent to the circuit breaker placing supporting plate, then the electric rolling door is closed, and then the rolling door support is driven by the pressing cylinder to be pressed at the side end of the leakage detection room, so that sealing is realized;
s3: before leak detection is carried out, SF in a leak detection room needs to be detected firstly6The concentration of the sulfur hexafluoride is detected, when the concentration is detected, a leak detection hole is respectively selected from two sides of the bottom of a leak detection room by using a leak detector for detection, and if the detected SF is detected6Is > 0.01ppm, S4 is executed, if the detected SF6If the concentration of the catalyst is less than or equal to 0.01ppm, executing S5;
s4: opening the air inlet and the air outlet on the leakage detection room, ventilating the leakage detection room, and detecting the SF in the leakage detection room within 5min6The air with higher concentration is discharged and replaced by fresh SF6Air with extremely low concentration, and after ventilation is finished, S3 is repeatedly executed;
s5: closing an upper air inlet and an air outlet of the leakage detecting room, starting leakage detection on a circuit breaker in the leakage detecting room, finishing leakage detection after 3 hours or 4 hours, respectively extending a leakage detector into each leakage detecting hole in the leakage detecting room to detect, and if the circuit breaker is detected to leak, carrying out fixed-point leakage detection or sectional wrapping leakage detection through the leakage detector to confirm a leakage part and a leakage point;
s6: after the leakage detection is finished, firstly, the pressing cylinder works to drive the rolling door support to be separated from the leakage detection room, then, the electric rolling door is opened, and the circuit breaker after the leakage detection is finished is taken out.
Further, in S1, if the circuit breaker to be leak-tested does not have a current transformer, a filler is inserted between the phase posts of the circuit breaker.
Further, in S2, the leak detection system is further equipped with a feeding unit, the feeding unit includes a conveying support disposed at a feeding side of the leak detection room, a plurality of conveying rollers are distributed on the conveying support along a conveying direction of the circuit breaker, the conveying rollers rotate synchronously by cooperation of a linkage chain wheel and a linkage chain, and any one of the conveying rollers is driven by a conveying motor to rotate so as to realize rotation of all the conveying rollers.
Further, in S2, guide plates are further provided on both sides of the breaker placement tray in the width direction, and the guide plates extend along the long axis direction of the breaker placement tray.
The invention has the advantages that: the leakage detection method of the invention detects whether the circuit breaker leaks or not through the cooperation of the special leakage detection system, the whole feeding and discharging is convenient, the detection period is short, the quick detection of the circuit breaker is realized, and before leakage detection, the leakage detection in a leakage detection room is firstly carried outSF of6The concentration of the sample is detected, and the accuracy of the detection result is ensured.
Through the ventilation system of the leak detection room, the product can be ensured to stand in the environment with extremely low sulfur hexafluoride concentration (infinitely close to no sulfur hexafluoride), and the recognition rate of the leak detection test of the product is improved.
The leakage detection system is also provided with a feeding unit, so that automatic feeding and discharging of the circuit breaker can be realized, manual carrying is not needed, and manual labor is reduced.
The circuit breaker is placed the deflector that layer board both sides set up, then is at the in-process that the circuit breaker was placed, leads spacingly to the circuit breaker, avoids the circuit breaker off tracking, influences subsequent detection.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic diagram of a dedicated leak detection system of the present invention.
Fig. 2 is an internal schematic view of a dedicated leak detection system of the present invention.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
The porcelain column type circuit breaker leak detection method is realized by the following steps:
s1: before leak detection is carried out, filler 1 is plugged into a bracket of a circuit breaker to be leak-detected and a bracket of an operating mechanism, so that adjacent phase columns 112 of the circuit breaker and the operating mechanism 13 and the operating mechanism bracket 12 are separated from each other, as shown in fig. 2.
If the circuit breaker to be subjected to leak detection does not have a current transformer, filling materials are stuffed between phase columns of the circuit breaker.
S2: the circuit breaker filled with the filling 1 is then fed into a dedicated leak detection system.
As shown in fig. 1, the schematic diagram shown in fig. 2 can know, special leak hunting system includes a leak hunting room 2, this leak hunting room 2 is a side end open-ended hollow cuboid structure, the opening side in leak hunting room 2 is the feeding side, the feeding unit still is equipped with in the feeding side in leak hunting room 2, the feeding unit is including setting up the conveying support in leak hunting room 2 feeding side, it has a plurality of conveying cylinders to distribute along the direction of delivery of circuit breaker on conveying support, each carries and realizes synchronous rotation through the cooperation of linkage sprocket and linkage chain between the cylinder, thereby one of them conveying cylinder is rotated by a conveying motor drive and is realized all rotations of conveying the cylinder. The feeding unit is arranged, so that automatic feeding and discharging of the circuit breaker can be achieved, manual carrying is not needed, manual labor is reduced, and feeding and discharging of the circuit breaker are facilitated.
An electric rolling door 3 is arranged on the feeding side of the leakage detecting room 2, the electric rolling door 3 is arranged on the side end of the leakage detecting room 2 through a rolling door support 4, the electric rolling door 3 is driven by a motor arranged on the rolling door support 4 to work, a sealing strip is arranged between the rolling door support 4 and the side wall of the leakage detecting room 2, the sealing strip is arranged to seal between the rolling door support 4 and the leakage detecting room 2, when the rolling door support 4 is directly attached to the leakage detecting room 2, a gap is formed between the rolling door support 4 and the leakage detecting room 2 due to the problem of processing roughness of the rolling door support and the leakage detecting room, the accuracy of a subsequent detection result is influenced, the rolling door support 4 is driven by pressing cylinders 5 arranged on the two sides of the leakage detecting room 2 to be pressed on the side end of the leakage detecting room 2, the pressing cylinders 5 are provided with a plurality, the opening and closing of the feeding side of the leakage detecting room 2 are realized through the opening and closing of the electric rolling door 3.
The air inlet has at the upside end of leak hunting room 2, install air inlet machine 6 in air inlet department, the downside end in leak hunting room 2 has an air outlet, install out fan 7 in air outlet department, the side in leak hunting room 2 has a display area, an operating area, installs the display screen in display area department, has parameter display such as humiture, scavenging time, test time on the display screen, has operating button such as switch, scavenging, detection, illumination on the operating area.
Still have a circuit breaker in leak hunting room 2 and place layer board 8, should place layer board 8 and fix in leak hunting room 2, still be provided with the several on leak hunting room 2 and examineThe small opening, it sets up in each different positions of leak hunting room 2 to examine the small opening, all fills up on each examines the small opening and has with it complex sealing plug, the setting of examining the small opening, then in utilizing the leak detector to stretch into leak hunting room 2 from examining the small opening for the convenience of personnel, to the SF in leak hunting room 26The sealing plug is used for sealing the leakage detecting hole when the detection is not carried out.
Guide plates 9 are further provided on both sides of the breaker placing support plate 8 in the width direction, and the guide plates 9 extend along the long axis direction of the breaker placing support plate 8. The guide plates 9 arranged on two sides of the supporting plate 8 are placed on the circuit breaker, so that the circuit breaker is guided and limited in the placing process of the circuit breaker, and the phenomenon of deviation of the circuit breaker in the placing process is avoided, and subsequent detection is influenced.
When carrying out the circuit breaker and placing, at first, open electric rolling shutter door 3, then send into the circuit breaker and place on the layer board 8 with the circuit breaker, close electric rolling shutter door 3 again, then, drive rolling shutter door support 4 by compressing tightly jar 5 and compress tightly the side in leak hunting room 2, realize the sealed of whole leak hunting room 2.
S3: before leak detection is carried out, SF in the leak detection room 2 needs to be detected firstly6The concentration of detecting, when detecting, respectively select a leak hunting hole in the both sides of leak hunting room 2 bottoms, extract the sealing plug on these two leak hunting holes, in personnel stretch into leak hunting room 2 with the leak hunting appearance from the leak hunting hole again, to the SF in leak hunting room 26Is detected, if detected SF6Is > 0.01ppm, S4 is executed, if the detected SF is6If the concentration of (B) is less than or equal to 0.01ppm, S5 is executed.
S4: an air inlet and an air outlet on the leakage detection room 2 are opened, the leakage detection room 2 is ventilated by utilizing an air inlet machine 6 and an air outlet machine 7, and SF in the leakage detection room is ventilated within 5min6The air with higher concentration is discharged and replaced by fresh SF6And (4) air with extremely low concentration, and repeatedly executing S3 after ventilation is finished until the leak detection room 2 meets the detection requirement.
S5: closing air inlet and air outlet on leak hunting room 2, beginning to leak hunting the circuit breaker in leak hunting room 2, after 3 hours or 4 hours, the leak hunting of the end, stretch into each leak hunting hole on the leak hunting room respectively with the leak hunting appearance again and detect, if detect out the circuit breaker and leak hunting appear, then wrap up the gas leakage position and the leak hunting of confirming the circuit breaker through leak hunting appearance fixed point leak hunting or segmentation. Through this kind of system of airing exhaust of leak hunting room 2, avoided the influence that causes the leak hunting test because of environmental constraint in the factory building of high-tension apparatus manufacturing enterprise, this leak hunting system's leakproofness is higher than the leak hunting bag leakproofness that uses in the trade, has ensured the accuracy of testing result.
In the above steps, if the circuit breaker to be subjected to leak detection is provided with a current transformer, leak detection can be finished within 3 hours, and if the circuit breaker to be subjected to leak detection is not provided with a current transformer, leak detection is finished within 4 hours.
S6: after the leak detection is finished, firstly, the pressing cylinder 5 works, the driving rolling door support 4 is separated from the leak detection room 2, then, the electric rolling door 3 is opened, the circuit breaker after the leak detection is finished is taken out, and the whole leak detection process is finished.
The leakage detection method of the invention detects whether the circuit breaker leaks or not through the cooperation of the special leakage detection system, the whole feeding and discharging process is convenient, the detection period is short, the detection of the circuit breaker can be completed only in 3 hours or 4 hours, the leakage detection period of the circuit breaker is greatly shortened, the quick detection of the circuit breaker is realized, the working efficiency is improved, and the SF in a leakage detection room is detected before leakage detection6The concentration of the sample is detected, and the accuracy of the detection result is ensured.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A porcelain knob type circuit breaker leak detection method is characterized in that: comprises the following steps
S1: before leak detection is carried out, fillers are stuffed on a bracket of a circuit breaker to be subjected to leak detection and a bracket of an operating mechanism, so that adjacent phase columns of the circuit breaker and the operating mechanism and the bracket of the operating mechanism are separated;
s2: then, the circuit breaker is sent into a special leakage detecting system, the leakage detecting system comprises a leakage detecting room, the leakage detecting room is of a hollow cuboid structure with an open side end, the open side of the leakage detecting room is a feeding side, an electric rolling door is further arranged on the feeding side of the leakage detecting room, the electric rolling door is mounted on the leakage detecting room through a rolling door support, a sealing strip is further arranged between the rolling door support and the side wall of the leakage detecting room, the rolling door support is driven by pressing cylinders mounted on two sides of the leakage detecting room to be pressed on the side end of the leakage detecting room, the opening and closing of the feeding side of the leakage detecting room are achieved through the opening and closing of the electric rolling door, an air inlet is arranged at the upper side end of the leakage detecting room, the air inlet is connected to the outer side of a factory building through an exhaust pipeline, an air outlet is arranged at the lower side end, the placing supporting plate is fixed in a leak detection room, the leak detection room is also provided with a plurality of leak detection holes, and each leak detection hole is plugged with a sealing plug matched with the leak detection hole;
when the leakage detection room is placed, firstly, the electric rolling door is opened, then the circuit breaker is sent to the circuit breaker placing supporting plate, then the electric rolling door is closed, and then the rolling door support is driven by the pressing cylinder to be pressed at the side end of the leakage detection room, so that sealing is realized;
s3: before leak detection is carried out, SF in a leak detection room needs to be detected firstly6The concentration of the sulfur hexafluoride is detected, when the concentration is detected, a leak detection hole is respectively selected from two sides of the bottom of a leak detection room by using a leak detector for detection, and if the detected SF is detected6Is > 0.01ppm, S4 is executed, if the detected SF is6If the concentration of the catalyst is less than or equal to 0.01ppm, executing S5;
s4: opening the air inlet and the air outlet on the leakage detection room, ventilating the leakage detection room, and detecting the SF in the leakage detection room within 5min6The air with higher concentration is discharged and replaced by fresh SF6Air with extremely low concentration, and after ventilation is finished, S3 is repeatedly executed;
s5: closing an upper air inlet and an air outlet of the leakage detecting room, starting leakage detection on a circuit breaker in the leakage detecting room, finishing leakage detection after 3 hours or 4 hours, respectively extending a leakage detector into each leakage detecting hole in the leakage detecting room to detect, and if the circuit breaker is detected to leak, carrying out fixed-point leakage detection or sectional wrapping leakage detection through the leakage detector to confirm a leakage part and a leakage point;
s6: after the leakage detection is finished, firstly, the pressing cylinder works to drive the rolling door support to be separated from the leakage detection room, then, the electric rolling door is opened, and the circuit breaker after the leakage detection is finished is taken out.
2. The porcelain knob type circuit breaker leak detection method according to claim 1, characterized in that: in S1, if the circuit breaker to be subjected to leak detection does not have a current transformer, a filler is inserted between the phase columns of the circuit breaker.
3. The porcelain knob type circuit breaker leak detection method according to claim 1, characterized in that: in S2, the leak detection system is further provided with a feeding unit, the feeding unit comprises a conveying support arranged on the feeding side of the leak detection room, a plurality of conveying rollers are distributed on the conveying support along the conveying direction of the circuit breaker, synchronous rotation is achieved between the conveying rollers through the cooperation of a linkage chain wheel and a linkage chain, and therefore any one of the conveying rollers is driven by a conveying motor to rotate to achieve rotation of all the conveying rollers.
4. The porcelain knob type circuit breaker leak detection method according to claim 1, characterized in that: in S2, guide plates are further provided on both sides of the breaker placement tray in the width direction, and the guide plates extend along the long axis direction of the breaker placement tray.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010516916.8A CN111678659A (en) | 2020-06-09 | 2020-06-09 | Leakage detection method for porcelain knob type circuit breaker |
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| CN202010516916.8A CN111678659A (en) | 2020-06-09 | 2020-06-09 | Leakage detection method for porcelain knob type circuit breaker |
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Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04206120A (en) * | 1990-11-28 | 1992-07-28 | Yaskawa Electric Corp | Mesuring method and device for gas leak quantity of sf6 gas blast breaker |
| US5172583A (en) * | 1990-09-12 | 1992-12-22 | Alcatel Cit | Seal tester |
| US6296006B1 (en) * | 1998-03-10 | 2001-10-02 | Koppl Company, Inc. | System and method for sealing leaks in vessels |
| US20060065043A1 (en) * | 2004-09-27 | 2006-03-30 | William Cummings | Method and system for detecting leak in electronic devices |
| CN2773653Y (en) * | 2004-12-16 | 2006-04-19 | 上海神力科技有限公司 | Vacuum leakage inspector for fuel battery flow-guiding polar plate |
| CN201584353U (en) * | 2009-10-27 | 2010-09-15 | 中国西电电气股份有限公司 | Transmission mechanism for outdoor high-voltage AC porcelain column SF6 circuit breaker |
| CN106025883A (en) * | 2016-06-20 | 2016-10-12 | 国网河南省电力公司检修公司 | Mobile square cabin-based comprehensive maintenance system of circuit breaker |
| CN205680984U (en) * | 2016-06-20 | 2016-11-09 | 国网河南省电力公司检修公司 | System for Circuit Breaker monitoring device |
| CN106229183A (en) * | 2016-08-26 | 2016-12-14 | 江苏省如高高压电器有限公司 | A kind of breaker protection method |
| CN207741906U (en) * | 2018-02-05 | 2018-08-17 | 渭南师范学院 | High-voltage circuitbreaker on-Line Monitor Device |
| CN109000852A (en) * | 2018-09-25 | 2018-12-14 | 长虹美菱股份有限公司 | A kind of refrigerator ice cabinet leak detection room |
| CN210430704U (en) * | 2019-09-04 | 2020-04-28 | 苏州市华东电网电气有限公司 | Inside observation window of SF6 insulating looped netowrk cabinet gas tank |
-
2020
- 2020-06-09 CN CN202010516916.8A patent/CN111678659A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5172583A (en) * | 1990-09-12 | 1992-12-22 | Alcatel Cit | Seal tester |
| JPH04206120A (en) * | 1990-11-28 | 1992-07-28 | Yaskawa Electric Corp | Mesuring method and device for gas leak quantity of sf6 gas blast breaker |
| US6296006B1 (en) * | 1998-03-10 | 2001-10-02 | Koppl Company, Inc. | System and method for sealing leaks in vessels |
| US20060065043A1 (en) * | 2004-09-27 | 2006-03-30 | William Cummings | Method and system for detecting leak in electronic devices |
| CN2773653Y (en) * | 2004-12-16 | 2006-04-19 | 上海神力科技有限公司 | Vacuum leakage inspector for fuel battery flow-guiding polar plate |
| CN201584353U (en) * | 2009-10-27 | 2010-09-15 | 中国西电电气股份有限公司 | Transmission mechanism for outdoor high-voltage AC porcelain column SF6 circuit breaker |
| CN106025883A (en) * | 2016-06-20 | 2016-10-12 | 国网河南省电力公司检修公司 | Mobile square cabin-based comprehensive maintenance system of circuit breaker |
| CN205680984U (en) * | 2016-06-20 | 2016-11-09 | 国网河南省电力公司检修公司 | System for Circuit Breaker monitoring device |
| CN106229183A (en) * | 2016-08-26 | 2016-12-14 | 江苏省如高高压电器有限公司 | A kind of breaker protection method |
| CN207741906U (en) * | 2018-02-05 | 2018-08-17 | 渭南师范学院 | High-voltage circuitbreaker on-Line Monitor Device |
| CN109000852A (en) * | 2018-09-25 | 2018-12-14 | 长虹美菱股份有限公司 | A kind of refrigerator ice cabinet leak detection room |
| CN210430704U (en) * | 2019-09-04 | 2020-04-28 | 苏州市华东电网电气有限公司 | Inside observation window of SF6 insulating looped netowrk cabinet gas tank |
Non-Patent Citations (1)
| Title |
|---|
| 张丽娜等: ""SF6断路器检漏方法"", 《河北电力技术》 * |
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Application publication date: 20200918 |