CN109616347B - Isolator and sensor fixing device - Google Patents
Isolator and sensor fixing device Download PDFInfo
- Publication number
- CN109616347B CN109616347B CN201811650400.1A CN201811650400A CN109616347B CN 109616347 B CN109616347 B CN 109616347B CN 201811650400 A CN201811650400 A CN 201811650400A CN 109616347 B CN109616347 B CN 109616347B
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- seat
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- 239000007787 solid Substances 0.000 claims abstract description 16
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/16—Indicators for switching condition, e.g. "on" or "off"
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
Abstract
The invention relates to an isolating switch and a sensor fixing device. This isolator includes the electrically conductive arm and drives the rotatory insulating support post of electrically conductive arm, and insulating support post is fixed with sensor fixing device including the bottom flange that is in the bottom on the flange of bottom, be equipped with attitude sensor on the sensor fixing device, sensor fixing device is including being used for fixing the adapter rack on insulating support post bottom flange, be fixed with sensor seat on the adapter rack, be equipped with the attitude sensor who is used for detecting insulating support post rotation angle on the sensor seat, sensor seat is fixed on the adapter rack so that fastening bolt can pass through the solid wrench dismouting of taking the action bars through fastening bolt top tightness. Compared with the prior art, the isolating switch fixes the attitude sensor through the sensor fixing device, so that the maintenance and replacement of the attitude sensor can be completed in an electrified manner, and the workload of workers is reduced.
Description
Technical Field
The invention relates to an isolating switch and a sensor fixing device thereof.
Background
The open-type isolating switch is used as a type of switch equipment with the largest usage amount and the widest application range in a power system, operates in a high-voltage and high-current state, and has close relation between the working reliability and the safety of a power grid. At present, the on-off state of the open type isolating switch is mainly detected through an on-off brake indicator or visual inspection judgment of field personnel, the method is easily influenced by the subjectivity of an observer, the accuracy is low, the efficiency is poor, and the operation state of the isolating switch is difficult to master.
Therefore, a disconnecting switch which determines the opening and closing states by using an attitude sensor appears in the prior art. For example, the device for detecting the opening and closing of the disconnecting switch on line disclosed in the chinese utility model patent with the publication number CN203445023U includes an induction rotating member installed on a flange below a porcelain bottle corresponding to a conductive arm of the disconnecting switch and a detection alarm module forming a detection loop with the induction rotating member. The device can accurate reliable detection isolator divide-shut brake position, but including the inconvenient dismouting of sensor change of response drive member and detection alarm module.
For another example, in a high-voltage isolation switch attitude sensor disclosed in chinese patent application with application publication No. CN108831777A, the attitude sensor is detachably mounted on a high-voltage isolation switch moving contact arm, the high-voltage isolation switch is a high-voltage end, the voltage level is high, the requirement on the protection level of the sensor is high, and the sensor is inconvenient to disassemble and assemble.
To sum up, above-mentioned two kinds of sensors all can not realize electrified dismouting on high-voltage isolator, and it has to cut off the power supply to change the sensor, and the outage in power station can cause the pause of the resident electricity of large tracts of land and industrial power consumption, increases extra huge work load and causes unnecessary economic loss for the fortune dimension personnel in power station.
Disclosure of Invention
The invention aims to provide a sensor fixing device to solve the problems that the workload of workers is increased and an electric user needs to bear economic loss caused by power failure when a sensor in the existing isolating switch needs to be powered off when being replaced. The invention also aims to provide the isolating switch provided with the sensor fixing device.
In order to achieve the purpose, the technical scheme of the sensor fixing device is as follows:
the sensor fixing device comprises an adapter bracket used for being fixed on a flange at the bottom of the insulating support column, a sensor seat is fixed on the adapter bracket, an attitude sensor used for detecting the rotation angle of the insulating support column is arranged on the sensor seat, and the sensor seat is tightly fixed on the adapter bracket through a fastening bolt so that the fastening bolt can be disassembled and assembled through a solid wrench with an operating rod.
The beneficial effects are that: the sensor fixing device can fix the attitude sensor on the sensor seat, the adapter bracket is fixedly connected with the insulating support column, the sensor seat is tightly propped against the adapter bracket through the fastening bolt, when the attitude sensor needs to be overhauled and replaced, the sensor fixing seat can be detached from the adapter bracket through the solid wrench with the operating rod to complete the overhauling and replacing work of the attitude sensor, and then the sensor seat provided with the attitude sensor is arranged on the adapter bracket through the solid wrench with the operating rod. Compared with the prior art, the sensor fixing device disclosed by the invention is used for fixing the attitude sensor, so that the maintenance and replacement work of the attitude sensor can be completed in an electrified manner, and the workload of workers is reduced.
Furthermore, the fastening bolt is vertically arranged, a bolt cap of the fastening bolt is arranged at the lower end of the fastening bolt, and the adapter frame is in supporting fit with the attitude sensor seat in the up-down direction. The lower part of the sensor fixing device is low voltage, so that the attitude sensor seat and the sensor can be conveniently disassembled and assembled, and the sensor seat can be directly taken down through the insulating rod.
Furthermore, the adapter rack has an inserting piece inserted between the bottom flange and the bolt for fastening the bottom flange, and a clamping groove for clamping the bolt for fastening the bottom flange is formed in the inserting piece. The adapter rack is fixed on the bottom flange by utilizing the structure of the adapter rack, so that the whole structure is simplified.
Furthermore, the adapter rack also comprises a positioning arc surface which is used for positioning and matching with the peripheral surface of the bottom flange. The arc surface matched with the bottom flange is arranged on the adapter rack, so that the adapter rack is prevented from rotating.
Furthermore, the fastening bolt is assembled on the sensor seat, the sensor seat is provided with two opposite fixing plates, the adapter frame is provided with an adapter fixing plate inserted between the two fixing plates, the sensor seat is supported on the adapter fixing plate before the fastening bolt is fixed, and the fastening bolt is arranged on one fixing plate on the sensor seat and used for fixing the adapter fixing plate and the other fixing plate on the sensor seat in a jacking mode during fastening. With this design, it is helpful to adjust the length of the fastening bolt.
Furthermore, the sensor seat comprises a fixed cylinder, the switching fixed plate is inserted into the fixed cylinder, and the two fixed plates are formed by the cylinder wall of the fixed cylinder. The sensor seat is provided with a fixed cylinder for inserting the switching fixed plate, so that the switching frame and the sensor seat can be conveniently assembled.
Furthermore, two fixed plates are arranged up and down, the sensor is fixed on the fixed plate above, and the sensor seat is assembled on the fixed plate below by the fastening bolt, so that the structure of the sensor seat is simpler.
Furthermore, the fastening bolt is provided with a locking nut, so that the fastening bolt is locked, and the fastening bolt is prevented from loosening.
The technical scheme of the isolating switch is as follows:
the isolating switch comprises a conductive arm and an insulating support column driving the conductive arm to rotate, the insulating support column comprises a bottom flange located at the bottom, a sensor fixing device is fixed on the bottom flange, an attitude sensor is arranged on the sensor fixing device, the sensor fixing device comprises an adapter bracket used for being fixed on the flange at the bottom of the insulating support column, a sensor seat is fixed on the adapter bracket, an attitude sensor used for detecting the rotation angle of the insulating support column is arranged on the sensor seat, and the sensor seat is tightly fixed on the adapter bracket through a fastening bolt so that the fastening bolt can be disassembled and assembled through a solid wrench with an operating rod.
The beneficial effects are that: the sensor fixing device can fix the attitude sensor on the sensor seat, the adapter bracket is fixedly connected with the insulating support column, the sensor seat is tightly propped against the adapter bracket through the fastening bolt, when the attitude sensor needs to be overhauled and replaced, the sensor fixing seat can be detached from the adapter bracket through the solid wrench with the operating rod to complete the overhauling and replacing work of the attitude sensor, and then the sensor seat provided with the attitude sensor is arranged on the adapter bracket through the solid wrench with the operating rod. Compared with the prior art, the isolating switch fixes the attitude sensor through the sensor fixing device, so that the maintenance and replacement of the attitude sensor can be completed in an electrified manner, and the workload of workers is reduced.
Furthermore, the fastening bolt is vertically arranged, a bolt cap of the fastening bolt is arranged at the lower end of the fastening bolt, and the adapter frame is in supporting fit with the attitude sensor seat in the up-down direction. The lower part of the sensor fixing device is low voltage, so that the attitude sensor seat and the sensor can be conveniently disassembled and assembled, and the sensor seat can be directly taken down through the insulating rod.
Furthermore, the adapter rack has an inserting piece inserted between the bottom flange and the bolt for fastening the bottom flange, and a clamping groove for clamping the bolt for fastening the bottom flange is formed in the inserting piece. The adapter rack is fixed on the bottom flange by utilizing the structure of the adapter rack, so that the whole structure is simplified.
Furthermore, the adapter rack also comprises a positioning arc surface which is used for positioning and matching with the peripheral surface of the bottom flange. The arc surface matched with the bottom flange is arranged on the adapter rack, so that the adapter rack is prevented from rotating.
Furthermore, the fastening bolt is assembled on the sensor seat, the sensor seat is provided with two opposite fixing plates, the adapter frame is provided with an adapter fixing plate inserted between the two fixing plates, the sensor seat is supported on the adapter fixing plate before the fastening bolt is fixed, and the fastening bolt is arranged on one fixing plate on the sensor seat and used for fixing the adapter fixing plate and the other fixing plate on the sensor seat in a jacking mode during fastening. With this design, it is helpful to adjust the length of the fastening bolt.
Furthermore, the sensor seat comprises a fixed cylinder, the switching fixed plate is inserted into the fixed cylinder, and the two fixed plates are formed by the cylinder wall of the fixed cylinder. The sensor seat is provided with a fixed cylinder for inserting the switching fixed plate, so that the switching frame and the sensor seat can be conveniently assembled.
Furthermore, two fixed plates are arranged up and down, the sensor is fixed on the fixed plate above, and the sensor seat is assembled on the fixed plate below by the fastening bolt, so that the structure of the sensor seat is simpler.
Furthermore, the fastening bolt is provided with a locking nut, so that the fastening bolt is locked, and the fastening bolt is prevented from loosening.
Drawings
FIG. 1 is a schematic structural diagram of a disconnector according to the present invention;
FIG. 2 is an enlarged view of FIG. 1 at B;
FIG. 3 is a schematic view of the mounting position of the sensor fixture of FIG. 1;
FIG. 4 is a schematic view of the sensor mounting assembly of FIG. 2;
FIG. 5 is a top view of the sensor fixture of FIG. 3;
fig. 6 is a schematic structural view of the sensor receptacle of fig. 3;
FIG. 7 is a schematic structural view of the adapter rack of FIG. 3;
in the figure: 1-insulating support columns; 2-bottom flange; 3-a sensor seat; 4-fixing the cylinder; 5-a switching frame; 6, positioning an arc plate; 7-connecting a nut; 8-fastening bolts; 9-switching a fixed plate; 10-a card slot; 11-an insert sheet; 12-locking nut.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1 and 2, a first embodiment of the isolating switch of the present invention includes a frame body, an insulating support column 1 rotatably mounted on the frame body, and a conductive arm driven by the insulating support column 1 to rotate. The insulating support columns 1 rotatably assembled on the frame body are provided with a plurality of insulating support columns, the conductive arms corresponding to the insulating support columns 1 are also provided with a plurality of insulating support columns, and the disconnecting switch is switched on and off through the contact and disconnection of the conductive arms.
Insulating support column 1 includes vase and the bottom flange 2 of fixed connection in the vase bottom, and bottom flange 2 rotates the assembly on the support body for realize insulating support column 1 and rotate on the support body. The bottom flange 2 is fixed with a sensor fixing device, the sensor fixing device is provided with an attitude sensor, and the frame body is provided with a power supply for providing energy for the attitude sensor and a signal collector connected with the attitude sensor. When the insulating support column 1 drives the conductive arm to rotate to switch on and off, the attitude sensor in the embodiment is the prior art, and is specifically the same as an attitude sensor disclosed in the chinese patent application with the application publication number CN 108831777A.
As shown in fig. 3 to 5, the sensor fixing device includes an adapter bracket 5 fixed to the insulating support column 1 and a sensor holder 3 fixed to the adapter bracket 5, and the attitude sensor is mounted on the sensor holder 3. Referring to fig. 7, the adapter 5 includes a male tab 11 inserted between the bottom flange 2 and a bolt fastening the bottom flange 2 to the frame body, and the male tab 11 has a slot 10 engaged with the bolt. The card slot 10 includes a front straight section and a rear curved section such that the card slot 10 is a U-shaped slot with a forward facing opening. The arc-shaped section of the clamping groove 10 wraps the bolt fastening the bottom flange 2 on the frame body right, and the effect of preventing the bolt from loosening is achieved. The adapter rack 5 is provided with a positioning arc plate 6 with a forward opening at the rear side of the inserting piece 11, and the positioning arc plate 6 is tightly attached to the peripheral surface of the bottom flange 2 and used for preventing the adapter rack 5 from rotating in the horizontal direction. In this embodiment, the arc formed by the positioning arc plate 6 is a minor arc, which is convenient for processing and has a small volume, and in other embodiments, the positioning arc plate 6 may be replaced by the positioning arc plate 6 in which the formed arc is a major arc. The adapter bracket 5 is provided with an adapter fixing plate 9 extending backwards at the rear side of the positioning arc plate 6.
As shown in fig. 6 and 7, the sensor holder 3 includes a fixed cylinder 4 sleeved on the adapter fixing plate 9, and the fixed cylinder 4 includes an upper fixing plate and a lower fixing plate which are oppositely arranged up and down and side plates respectively located at two sides of the upper fixing plate and the lower fixing plate. The switching fixing plate 9 inserted in the fixing cylinder 4 is tightly attached to the lower fixing plate before fixing, the lower fixing plate is fixedly connected with a connecting nut 7, and the lower fixing plate is provided with a through hole penetrating through the connecting nut 7. A fastening bolt 8 penetrates through the connecting nut 7, the upper end of the fastening bolt 8 penetrates out of the lower fixing plate and presses the switching fixing plate 9 onto the upper fixing plate, and the sensor seat 3 is fixedly connected with the switching frame 5. As shown in fig. 4, a locking nut 12 is sleeved on the upper end of the fastening bolt 8 for locking the fastening bolt 8 when the fastening bolt 8 presses the adapter bracket against the upper fixing plate, so as to prevent the fastening bolt 8 from loosening. In other embodiments, the fastening bolt can also be directly screwed on the lower fixing plate. Fixedly connected with installation attitude sensor's mounting panel on the upper fixed plate, the mounting panel is the rectangular plate, and the four corners department of rectangular mounting panel has the connecting hole that is used for being connected with attitude sensor. In other embodiments, the attitude sensor may be mounted directly on the upper fixing plate; the side plates on the two sides of the upper and lower fixing plates can be replaced by connecting rods or connecting ribs.
The isolating switch in the embodiment is an open high-voltage isolating switch, the voltage level is high, and the requirement on the protection level is high during live-line operation. Therefore, when the attitude sensor is overhauled and replaced in an electrified way, a solid wrench with an operating rod is adopted to disassemble and assemble the sensor seat 3 at the lower side of the isolating switch. As shown in fig. 4, during disassembly, the locking nut 12 is firstly unscrewed by a solid wrench with an operating rod, the fastening bolt 8 is unscrewed by a socket wrench with an operating rod, and the sensor holder 3 is lifted and translated by the socket wrench with an operating rod and then is removed from the adapter 5; during installation, the sensor seat 3 is lifted by a socket wrench with an operating rod, the sensor seat is moved to the switching fixing plate 9 and is positioned in the fixing cylinder 4, the fastening bolt 8 is screwed down to fix the sensor seat 3 on the switching frame 5, and then the locking nut 12 is screwed down by a solid wrench with an operating rod to prevent the fastening bolt 8 from loosening. For better adaptation to a socket wrench with an operating rod, the length of the nut of the fastening bolt 8 is greater than the length of the coupling nut 7. In other embodiments, during disassembly, the locking nut 12 and the fastening bolt 8 can be sequentially unscrewed through a solid wrench with an operating rod, and then the sensor seat 3 is taken down from the adapter bracket 5 in a lifting manner, so that the attitude sensor fixed on the sensor seat 3 can be transported, inspected and maintained; during installation, the sensor seat 3 is lifted by a solid wrench with an operating rod until the adapter fixing plate 9 is positioned in the fixing cylinder 4, and then the fastening bolt 8 and the locking nut 12 are sequentially screwed so as to fix the sensor seat 3 on the adapter bracket 5. In other embodiments, the sensor holder 3 can be mounted or dismounted by controlling the depth of the socket wrench with the operating rod sleeved on the fastening bolt 8 and the locking nut 12 to operate the fastening bolt and the locking nut respectively, and the peripheral dimension of the head of the fastening bolt 8 is required to be equal to the peripheral dimension of the head of the locking nut 12.
The operation principle of the isolating switch of the invention is as follows: when the sensor fixing device is installed for the first time, the isolating switch needs to be powered off, the adapter rack 5 is installed on the bottom flange 2, the sensor seat 3 provided with the attitude sensor is fixed on the adapter rack 5 through the fastening bolt 8, and the sensor fixing device is powered on for use. When the attitude sensor needs to be repaired or replaced, a solid wrench with an operating rod is sleeved on the locking nut 12, the operating rod is rotated to unscrew the locking nut 12, then a socket wrench with the operating rod is sleeved on the fastening bolt 8, the fastening bolt is unscrewed to loosen the fastening connection between the sensor seat 3 and the adapter frame 5, the sensor seat 3 is lifted and separated from the adapter frame 5 through the socket wrench with the operating rod, then the attitude sensor is repaired or replaced on the ground, and finally the sensor seat 3 is lifted and fixed on the adapter frame 5 by using the socket wrench with the operating rod.
The second embodiment of the isolating switch of the invention is different from the first embodiment of the isolating switch in that the adapter bracket in the second embodiment is provided with bolt mounting plates in parallel at intervals below the adapter fixing plate, fastening bolts are arranged on the bolt mounting plates, when the sensor seat is fastened, the fastening bolts are abutted against the bottom plate of the sensor seat and the adapter fixing plate to realize fixation, when the isolating switch is disassembled, the fastening bolts are unscrewed, and the sensor seat is disassembled through a solid wrench with an operating rod and a socket wrench with an operating rod.
The third embodiment of the isolating switch of the invention is different from the first embodiment of the isolating switch in that the adapter bracket and the sensor seat in the present embodiment are inserted and installed in a manner that the circular shaft and the cylinder are matched.
The fourth embodiment of the isolating switch of the present invention is different from the first embodiment of the isolating switch in that in the present embodiment, after the fixing of the sensor seat and the adapter bracket is released by the solid wrench with the operating rod, the sensor seat can be removed by the clamp, and the corresponding sensor seat has a clamping portion adapted to the clamp.
The fifth embodiment of the isolating switch of the invention is different from the first embodiment of the isolating switch in that the isolating switch in the present embodiment is a low-voltage isolating switch, and the requirement of the protection class is low, and at this time, the fastening bolt on the sensor seat can also be arranged along the oblique lower direction, and the sensor seat can be operated and detached from the oblique lower direction.
In the specific embodiment of the sensor fixing device of the present invention, the structure of the sensor fixing device in this embodiment is the same as that of the sensor fixing device in each embodiment of the isolating switch, and details are not repeated.
Claims (6)
1. Sensor fixing device, its characterized in that: the device comprises an adapter bracket fixed on a flange at the bottom of an insulating support column, a sensor seat is fixed on the adapter bracket, an attitude sensor for detecting the rotation angle of the insulating support column is arranged on the sensor seat, the sensor seat is tightly fixed on the adapter bracket through a fastening bolt so that the fastening bolt can be disassembled and assembled through a solid wrench with an operating rod, the fastening bolt is assembled on the sensor seat, the sensor seat is provided with two fixing plates which are oppositely arranged, the adapter bracket is provided with an adapter fixing plate inserted between the two fixing plates, the sensor seat is supported on the adapter fixing plate before the fastening bolt is fixed, the fastening bolt is arranged on one fixing plate on the sensor seat and fixedly pushes the adapter fixing plate against the other fixing plate on the sensor seat when in fastening, the adapter bracket is provided with an inserting piece inserted between the bottom flange and a bolt for fastening the bottom flange, the adapter rack is characterized in that the insert is provided with a clamping groove for clamping a bolt of the fastening bottom flange, and the adapter rack further comprises a positioning arc surface which is used for being matched with the peripheral surface of the bottom flange in a positioning mode.
2. The sensor fixation device of claim 1, wherein: the fastening bolt is vertically arranged, a bolt cap of the fastening bolt is arranged at the lower end of the fastening bolt, and the switching frame is in supporting fit with the attitude sensor seat in the up-down direction.
3. The sensor fixation device of claim 1, wherein: the sensor seat comprises a fixed cylinder, the switching fixed plate is inserted into the fixed cylinder, and the two fixed plates are formed by the cylinder wall of the fixed cylinder.
4. The sensor fixation device of claim 1, wherein: the two fixing plates are arranged up and down, the fixing plate above is used for fixing the attitude sensor, and the fastening bolt is assembled on the fixing plate below.
5. The sensor fixing device according to claim 1 or 2, wherein: and the fastening bolt is provided with a locking nut.
6. Isolator, its characterized in that: the sensor fixing device comprises a conductive arm and an insulating support column driving the conductive arm to rotate, wherein the insulating support column comprises a bottom flange at the bottom, a sensor fixing device is fixed on the bottom flange, an attitude sensor is arranged on the sensor fixing device, and the sensor fixing device is the sensor fixing device in any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650400.1A CN109616347B (en) | 2018-12-31 | 2018-12-31 | Isolator and sensor fixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811650400.1A CN109616347B (en) | 2018-12-31 | 2018-12-31 | Isolator and sensor fixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109616347A CN109616347A (en) | 2019-04-12 |
| CN109616347B true CN109616347B (en) | 2020-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811650400.1A Active CN109616347B (en) | 2018-12-31 | 2018-12-31 | Isolator and sensor fixing device |
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| CN (1) | CN109616347B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112904196B (en) * | 2021-05-06 | 2021-07-23 | 常州江苏大学工程技术研究院 | Well-sealed attitude sensor assembly for isolating switch and using method thereof |
| CN113624268A (en) * | 2021-07-22 | 2021-11-09 | 北京波瑞芯工程技术研究院 | GIS isolator contact deciliter state monitoring is with fixed frock of sensor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013131476A (en) * | 2011-12-22 | 2013-07-04 | Chugoku Electric Power Co Inc:The | Operation monitoring device and operation monitoring system for disconnecting switch |
| CN203445023U (en) * | 2013-08-16 | 2014-02-19 | 国家电网公司 | Horizontal rotary isolating switch opening and closing position online detector |
| CN204008690U (en) * | 2014-08-11 | 2014-12-10 | 天一同益电气股份有限公司 | Close velocity measuring device and be provided with the high voltage ground switch of this device |
| CN207231513U (en) * | 2017-07-19 | 2018-04-13 | 南京水木自动化科技有限公司 | A kind of adjustable mounting assembly based on filling workshop data acquisition |
| CN207332865U (en) * | 2017-09-25 | 2018-05-08 | 中国石油天然气股份有限公司 | Box is fixedly mounted in wireless work(map sensor fixed component and wireless work(map sensor |
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2018
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