CN111799114A - Verifying attachment is used in production of high-pressure vacuum circuit breaker - Google Patents
Verifying attachment is used in production of high-pressure vacuum circuit breaker Download PDFInfo
- Publication number
- CN111799114A CN111799114A CN202010564928.8A CN202010564928A CN111799114A CN 111799114 A CN111799114 A CN 111799114A CN 202010564928 A CN202010564928 A CN 202010564928A CN 111799114 A CN111799114 A CN 111799114A
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- fixedly connected
- vacuum circuit
- voltage vacuum
- cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
- H01H11/0062—Testing or measuring non-electrical properties of switches, e.g. contact velocity
-
- 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Measuring Fluid Pressure (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention discloses a checking device for producing a high-voltage vacuum circuit breaker, which relates to the technical field of electrical equipment production, and comprises a circuit breaker body, wherein a hydraulic translation counting mechanism is arranged in a middle seat, positioning mounting seats are respectively arranged at two sides of a pressing column in a checking box, a plurality of fixing support plates are respectively and fixedly connected with two sides of the pressing column, a locking mechanism corresponding to the fixing support plates is arranged in the positioning mounting seats, push plates are respectively and fixedly connected with two sides of the pressing column, and an impact detection device is arranged in the checking box. The detection to high-voltage vacuum circuit breaker is comprehensive, and the detection effect is good.
Description
Technical Field
The invention relates to the technical field of electrical equipment production, in particular to a checking device for high-voltage vacuum circuit breaker production.
Background
The vacuum circuit breaker is named because the arc extinguishing medium and the insulating medium of the contact gap after arc extinguishing are both high vacuum; the vacuum circuit breaker is an indoor power distribution device in a 3-10 kV and 50Hz three-phase alternating current system, can be used for protecting and controlling electrical equipment in industrial and mining enterprises, power plants and transformer substations, is particularly suitable for use places requiring no oil, less maintenance and frequent operation, and can be configured in a middle-placed cabinet, a double-layer cabinet and a fixed cabinet to be used for controlling and protecting high-voltage electrical equipment.
High-voltage vacuum circuit breaker can all be used in industrial and mining enterprises, power plant etc. however the user is at the in-process of producing high-voltage vacuum circuit breaker, and the user need detect high-voltage vacuum circuit breaker to need use detection device, traditional detection device detection effect is poor, can not carry out accurate detection to high-voltage vacuum circuit breaker, and the error that easily causes high-voltage vacuum circuit breaker to produce is unqualified, improves high-voltage vacuum circuit breaker's defective percentage.
Disclosure of Invention
The invention provides a checking device for producing a high-voltage vacuum circuit breaker, which solves the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a verifying attachment is used in production of high pressure vacuum circuit breaker, including the circuit breaker body, be equipped with closing switch on the circuit breaker body, closing switch fixed connection operating handle, operating handle keeps away from closing switch's one end and rotates the connection depression bar, the slide is connected to the bottom regulation of depression bar, the bottom of slide slides and is equipped with middle seat, the bottom fixed connection compression leg of middle seat, one side of circuit breaker body is equipped with the bottom plate, the top fixed connection inspection case of bottom plate, the compression leg is located the inspection incasement, be equipped with fluid pressure type translation counting mechanism in the middle seat, the both sides that lie in the compression leg in the inspection case all are equipped with the location mount pad, the bottom fixed connection of location mount pad and inspection case, a plurality of fixed extension boards of equal fixed connection in both sides of compression leg, be equipped with the locking mechanical system corresponding with fixed extension board in the location mount pad, the both sides of compression leg.
As a preferred technical scheme, the hydraulic translation counting mechanism comprises a sliding cavity arranged in a middle seat, a sliding block is arranged in the sliding cavity in a sliding mode, the sliding block is fixedly connected with the bottom end of the sliding seat, two ends of the side portion of the sliding block are fixedly connected with push rods, a side cavity is arranged on the side edge of the middle seat, a piston is connected in the side cavity in a sliding mode and fixedly connected with the end portion of the push rod, and an anti-overflow device communicated with the side cavity is fixedly arranged at the top end of the middle seat.
As a preferred technical scheme of the invention, the anti-overflow device comprises an anti-overflow pipe, the top end of the anti-overflow pipe is fixedly connected with a top cover, the bottom of the top cover is provided with air holes which are arranged in a surrounding manner, the anti-overflow pipe is internally provided with an upper channel, a middle cavity and a lower channel in sequence from top to bottom, the upper channel, the middle cavity and the lower channel are all communicated, a floating ball is arranged in the middle cavity, and a branch channel is arranged in the anti-overflow pipe between the lower channel and the middle cavity.
As a preferred technical scheme of the invention, a transparent plate corresponding to the side cavity is embedded outside the middle seat, and scales are arranged on the middle seat below the transparent plate.
As a preferable technical scheme of the invention, the locking mechanism comprises an installation groove arranged in the positioning installation seat, the end part in the installation groove is fixedly connected with an electromagnet, the end part of the electromagnet is fixedly connected with a spring, and one end of the spring, which is far away from the electromagnet, is fixedly connected with a locking stop block.
As a preferable technical scheme of the invention, one end of the locking stop block close to the compression leg is an inclined surface, and the thickness of the locking stop block is lower than the distance between two adjacent fixed support plates.
As a preferable technical scheme of the invention, the impact detection device comprises a rotating shaft which is rotatably arranged in the inspection box, and a plurality of blades are fixedly connected to the outer part of the rotating shaft.
As a preferable technical scheme of the invention, a display screen is fixedly arranged outside the inspection box, a controller and a storage battery are arranged in the inspection box, and pressure sensors are arranged at the bottom end of the locking stop block and on the blade plate.
The invention has the following advantages: according to the invention, the hydraulic translation mechanism is arranged to detect the horizontal displacement distance generated when the operating handle is switched on and switched off, the locking mechanism is arranged to fix the switched-on operating handle and detect the pressure generated by the switched-on operating handle, and the impact detection device is arranged to detect the impact force generated by the switched-off handle under the condition of pressure loss during switching off, so that the high-voltage vacuum circuit breaker can be detected comprehensively, and the detection effect is good.
Drawings
Fig. 1 is a schematic structural diagram of a checking device for producing a high-voltage vacuum circuit breaker.
Fig. 2 is a structural schematic diagram of a hydraulic translation counting mechanism in the inspection device for producing the high-voltage vacuum circuit breaker.
Fig. 3 is a schematic structural diagram of an anti-overflow device in the inspection device for producing the high-voltage vacuum circuit breaker.
Fig. 4 is a schematic structural diagram of the inside of a checking box in the checking device for producing the high-voltage vacuum circuit breaker.
Fig. 5 is a schematic structural view of a locking mechanism in the inspection device for producing the high voltage vacuum circuit breaker.
Fig. 6 is a schematic structural diagram of a sliding block in the inspection device for producing the high-voltage vacuum circuit breaker.
In the figure: 1. a circuit breaker body; 2. a closing switch; 3. an operating handle; 4. a pressure lever; 5. a slide base; 6. a middle seat; 7. pressing the column; 8. a base plate; 9. a checking box; 10. a display screen; 11. a slider; 12. a lateral cavity; 13. a push rod; 14. a piston; 15. an anti-overflow device; 16. an anti-overflow pipe; 17. a top cover; 18. air holes; 19. a middle cavity; 20. an upper channel; 21. a lower channel; 22. a floating ball; 23. a branch channel; 24. fixing a support plate; 25. positioning the mounting seat; 26. pushing the plate; 27. a rotating shaft; 28. a leaf plate; 29. mounting grooves; 30. an electromagnet; 31. a spring; 32. and locking the stop.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Example 1
Referring to fig. 1-6, a checking device for producing a high-voltage vacuum circuit breaker comprises a circuit breaker body 1, a closing switch 2 is arranged on the circuit breaker body 1, the closing switch 2 is fixedly connected with an operating handle 3, one end of the operating handle 3, which is far away from the closing switch 2, is rotatably connected with a pressure lever 4, the bottom end of the pressure lever 4 is fixedly connected with a sliding seat 5, the bottom end of the sliding seat 5 is slidably provided with a middle seat 6, the bottom of the middle seat 6 is fixedly connected with a pressure column 7, one side of the circuit breaker body 1 is provided with a bottom plate 8, the top end of the bottom plate 8 is fixedly connected with a checking box 9, the pressure column 7 is positioned in the checking box 9, a hydraulic translation counting mechanism is arranged in the middle seat 6, positioning installation seats 25 are respectively arranged at two sides of the pressure column 7 in the checking box 9, the positioning installation seats 25 are fixedly connected with the bottom end of the checking box 9, two sides of the pressure column 7 are respectively, the two sides of the pressure column 7 are also fixedly connected with a push plate 26, and an impact detection device is arranged in the inspection box 9.
Fluid pressure type translation counting mechanism is equipped with slider 11 including seting up the slip chamber in middle seat 6, the slip intracavity slip, and the bottom fixed connection of slider 11 and slide 5, the equal fixed connection push rod 13 in lateral part both ends of slider 11, side chamber 12 has been seted up to the side of middle seat 6, sliding connection piston 14 in the side chamber 12, the tip fixed connection of piston 14 and push rod 13, the fixed anti-overflow device 15 that is linked together with side chamber 12 that is equipped with in top of middle seat 6.
The anti-overflow device 15 comprises an anti-overflow pipe 16, the top end of the anti-overflow pipe 16 is fixedly connected with a top cover 17, the bottom of the top cover 17 is provided with an air hole 18 which is arranged in a surrounding mode, an upper channel 20, a middle cavity 19 and a lower channel 21 are sequentially arranged in the anti-overflow pipe 16 from top to bottom, the upper channel 20, the middle cavity 19 and the lower channel 21 are all communicated, a floating ball 22 is arranged in the middle cavity 19, and a branch channel 23 is arranged in the anti-overflow pipe 16 between the lower channel 21 and the middle cavity 19.
A transparent plate corresponding to the side cavity 12 is embedded outside the middle seat 6, and scales are arranged on the middle seat 6 below the transparent plate.
The locking mechanism comprises a mounting groove 29 arranged in the positioning mounting seat 25, an electromagnet 30 is fixedly connected to the end part in the mounting groove 29, a spring 31 is fixedly connected to the end part of the electromagnet 30, and a locking stop 32 is fixedly connected to one end, far away from the electromagnet 30, of the spring 31.
The end of the locking stop 32 close to the compression leg 7 is an inclined surface, and the thickness of the locking stop is less than the distance between two adjacent fixing support plates 24.
The impact detection device comprises a rotating shaft 27 which is rotatably arranged in the inspection box 9, and a plurality of blades 28 are fixedly connected to the outer part of the rotating shaft 27.
Example 2
Referring to fig. 1 to 6, the other contents of the present embodiment are the same as embodiment 1, except that: the fixed display screen 10 that is equipped with in inspection box 9's outside, be equipped with controller and battery in the inspection box 9, all be equipped with pressure sensor on the bottom of locking dog 32 and the lamina 28.
In the implementation process of the invention, firstly, the operating handle is rotated to press down 3 to drive the pressure lever 4 to move downwards, the pressure lever 4 moves in an arc-shaped track to drive the sliding seat 5 to slide and push the piston 14 to move, meanwhile, the pressure column 7 moves downwards under pressure, the fixed support plate 24 presses the locking stop 32 to enable the locking stop 32 to be retracted into the mounting groove 29 for multiple times until the operating handle 3 stops moving, the locking stop 32 blocks the fixed support plate 24 to realize fixation, at the moment, the pressure sensor at the bottom of the locking stop 32 can detect reset pressure, the electromagnet 30 is controlled to be powered on, the locking stop 32 is adsorbed to enable the locking stop 32 to be retracted into the mounting groove 29, the fixed support plate 24 loses the block, the pressure column 7 resets to move upwards and rapidly, the push plate 26 is driven to move, the blade 28 is impacted to enable the rotating shaft.
According to the invention, the hydraulic translation mechanism is arranged to detect the horizontal displacement distance generated when the operating handle is switched on and switched off, the locking mechanism is arranged to fix the switched-on operating handle and detect the pressure generated by the switched-on operating handle, and the impact detection device is arranged to detect the impact force generated by the switched-off handle under the condition of pressure loss during switching off, so that the high-voltage vacuum circuit breaker can be detected comprehensively, and the detection effect is good.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A checking device for producing a high-voltage vacuum circuit breaker comprises a circuit breaker body (1) and is characterized in that a closing switch (2) is arranged on the circuit breaker body (1), the closing switch (2) is fixedly connected with an operating handle (3), one end of the operating handle (3), which is far away from the closing switch (2), is rotatably connected with a pressing rod (4), the bottom end of the pressing rod (4) is connected with a sliding seat (5) in a specified manner, the bottom end of the sliding seat (5) is provided with a middle seat (6) in a sliding manner, the bottom of the middle seat (6) is fixedly connected with a pressing column (7), one side of the circuit breaker body (1) is provided with a bottom plate (8), the top end of the bottom plate (8) is fixedly connected with a checking box (9), the pressing column (7) is positioned in the checking box (9), a hydraulic translation counting mechanism is arranged in the middle seat (6), two sides, which are positioned on the, the bottom fixed connection of location mount pad (25) and inspection case (9), a plurality of fixed extension boards (24) of the equal fixed connection in both sides of compression leg (7), be equipped with in location mount pad (25) with fixed extension board (24) corresponding locking mechanical system, fixed connection push pedal (26) are gone back to the both sides of compression leg (7), are equipped with the impact detection device in inspection case (9).
2. The high-voltage vacuum circuit breaker production inspection device as claimed in claim 1, wherein the hydraulic translation counting mechanism comprises a sliding cavity arranged in the middle seat (6), a sliding block (11) is arranged in the sliding cavity in a sliding manner, the sliding block (11) is fixedly connected with the bottom end of the sliding seat (5), push rods (13) are fixedly connected with both ends of the side portion of the sliding block (11), a side cavity (12) is formed in the side edge of the middle seat (6), a piston (14) is connected in the side cavity (12) in a sliding manner, the piston (14) is fixedly connected with the end portion of the push rod (13), and an anti-overflow device (15) communicated with the side cavity (12) is fixedly arranged at the top end of the middle seat (6).
3. The inspection device for the production of the high-voltage vacuum circuit breaker according to claim 2, wherein the anti-overflow device (15) comprises an anti-overflow pipe (16), the top end of the anti-overflow pipe (16) is fixedly connected with a top cover (17), the bottom of the top cover (17) is provided with air holes (18) which are arranged in a surrounding manner, an upper channel (20), a middle cavity (19) and a lower channel (21) are sequentially arranged in the anti-overflow pipe (16) from top to bottom, the upper channel (20), the middle cavity (19) and the lower channel (21) are all communicated, a floating ball (22) is arranged in the middle cavity (19), and a branch channel (23) is arranged in the anti-overflow pipe (16) between the lower channel (21) and the middle cavity (19).
4. The checking device for the production of the high-voltage vacuum circuit breaker according to claim 2, characterized in that a transparent plate corresponding to the side cavity (12) is embedded outside the middle seat (6), and scales are arranged on the middle seat (6) below the transparent plate.
5. The production inspection device for the high-voltage vacuum circuit breaker is characterized in that the locking mechanism comprises a mounting groove (29) arranged in the positioning mounting seat (25), the end part in the mounting groove (29) is fixedly connected with an electromagnet (30), the end part of the electromagnet (30) is fixedly connected with a spring (31), and one end, far away from the electromagnet (30), of the spring (31) is fixedly connected with a locking stop block (32).
6. The checking device for the production of the high-voltage vacuum circuit breaker according to claim 1, characterized in that one end of the locking stop (32) close to the compression leg (7) is an inclined surface, and the thickness of the locking stop is lower than the distance between two adjacent fixing support plates (24).
7. The inspection device for the production of the high-voltage vacuum circuit breaker according to claim 1, wherein the impact detection device comprises a rotating shaft (27) rotatably arranged in the inspection box (9), and a plurality of blades (28) are fixedly connected to the outside of the rotating shaft (27).
8. The inspection device for the production of the high-voltage vacuum circuit breaker according to claim 1, characterized in that a display screen (10) is fixedly arranged outside the inspection box (9), a controller and a storage battery are arranged in the inspection box (9), and pressure sensors are arranged at the bottom end of the locking stop block (32) and on the blade plate (28).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010564928.8A CN111799114B (en) | 2020-06-19 | 2020-06-19 | Verifying attachment is used in high-pressure vacuum circuit breaker production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010564928.8A CN111799114B (en) | 2020-06-19 | 2020-06-19 | Verifying attachment is used in high-pressure vacuum circuit breaker production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111799114A true CN111799114A (en) | 2020-10-20 |
| CN111799114B CN111799114B (en) | 2022-12-20 |
Family
ID=72804511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010564928.8A Active CN111799114B (en) | 2020-06-19 | 2020-06-19 | Verifying attachment is used in high-pressure vacuum circuit breaker production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111799114B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021253403A1 (en) * | 2020-06-19 | 2021-12-23 | 江山海维科技有限公司 | Inspection apparatus for production of high-voltage vacuum interrupter |
| CN113985269A (en) * | 2021-11-01 | 2022-01-28 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | High-voltage circuit breaker mechanical state diagnosis device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080284548A1 (en) * | 2004-08-03 | 2008-11-20 | Componentes Elétricos Especiais Comércio, Importaç | Method for Sectioning With a Section Switch a Medium-Voltage Electric Power Distribution Line Exhibiting a Disturbance, Section Switch for Medium-Voltage Electric Power Distribution Line Applicable Thereon and Electronic Circuit for Detecting a Fault Current and Comprised by Said Section Switch |
| CN202024846U (en) * | 2011-01-10 | 2011-11-02 | 上海亿盟电气自动化技术有限公司 | Testing device for impact force of tripper |
| CN105242202A (en) * | 2015-10-29 | 2016-01-13 | 福建中网电气有限公司 | Breaker detection apparatus |
| CN108549022A (en) * | 2018-06-25 | 2018-09-18 | 许昌市长江高压计量设备有限公司 | A kind of high-pressure vacuum breaker production verifying attachment |
| CN110174203A (en) * | 2019-07-10 | 2019-08-27 | 武汉大洋义天科技股份有限公司 | High-voltage switch contact device for pressure measurement and measurement method |
| CN110567640A (en) * | 2019-10-10 | 2019-12-13 | 国网河南省电力公司电力科学研究院 | Online calibrating device and method for circuit breaker pressure sensor |
-
2020
- 2020-06-19 CN CN202010564928.8A patent/CN111799114B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080284548A1 (en) * | 2004-08-03 | 2008-11-20 | Componentes Elétricos Especiais Comércio, Importaç | Method for Sectioning With a Section Switch a Medium-Voltage Electric Power Distribution Line Exhibiting a Disturbance, Section Switch for Medium-Voltage Electric Power Distribution Line Applicable Thereon and Electronic Circuit for Detecting a Fault Current and Comprised by Said Section Switch |
| CN202024846U (en) * | 2011-01-10 | 2011-11-02 | 上海亿盟电气自动化技术有限公司 | Testing device for impact force of tripper |
| CN105242202A (en) * | 2015-10-29 | 2016-01-13 | 福建中网电气有限公司 | Breaker detection apparatus |
| CN108549022A (en) * | 2018-06-25 | 2018-09-18 | 许昌市长江高压计量设备有限公司 | A kind of high-pressure vacuum breaker production verifying attachment |
| CN110174203A (en) * | 2019-07-10 | 2019-08-27 | 武汉大洋义天科技股份有限公司 | High-voltage switch contact device for pressure measurement and measurement method |
| CN110567640A (en) * | 2019-10-10 | 2019-12-13 | 国网河南省电力公司电力科学研究院 | Online calibrating device and method for circuit breaker pressure sensor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021253403A1 (en) * | 2020-06-19 | 2021-12-23 | 江山海维科技有限公司 | Inspection apparatus for production of high-voltage vacuum interrupter |
| CN113985269A (en) * | 2021-11-01 | 2022-01-28 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | High-voltage circuit breaker mechanical state diagnosis device and method |
| CN113985269B (en) * | 2021-11-01 | 2024-04-26 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Device and method for diagnosing mechanical state of high-voltage circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111799114B (en) | 2022-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111799114B (en) | Verifying attachment is used in high-pressure vacuum circuit breaker production | |
| CN101770903B (en) | Position indicating device for a circuit breaker | |
| CN219369824U (en) | Solid utmost point post electric property testing arrangement that seals | |
| WO2021253403A1 (en) | Inspection apparatus for production of high-voltage vacuum interrupter | |
| CN202259117U (en) | Outdoor AC high-voltage drop type fuse | |
| CN202282293U (en) | Indoor AC high voltage vacuum contactor | |
| CN209804568U (en) | Switching-on and switching-off indicating device of intelligent residual current circuit breaker | |
| CN104916491B (en) | Permanent magnet vacuum on-load tap switch | |
| CN209298721U (en) | A kind of handcart of high-pressure vacuum breaker | |
| CN201311868Y (en) | Isolating switch and switch cabinet provided with isolating switch | |
| CN102426946B (en) | Auxiliary contact structure for low-voltage electrical appliance | |
| CN101752139A (en) | Isolation switch and switch cabinet with same | |
| CN203573902U (en) | Operating mechanism for VEJ/EP vacuum circuit breaker | |
| CN105162017A (en) | Movable door isolation device used for handcart-type switch cabinet and handcart-type switch cabinet | |
| CN107728054B (en) | Detection apparatus for double-moving-head vacuum arc-extinguishing chamber contact pressure and position distance | |
| CN208848808U (en) | A kind of isolation switch contact device | |
| CN221862266U (en) | Low-voltage switch cabinet body | |
| CN215183609U (en) | High-voltage electrical appliance switch capable of adjusting closing radian | |
| CN218826815U (en) | Interlocking device of vacuum circuit breaker | |
| CN115841929B (en) | Column vacuum circuit breaker | |
| CN219067664U (en) | Quick fixing device for valve of high-voltage centrally installed switchgear | |
| CN117192174B (en) | Automatic contact device for primary current loop | |
| CN213584870U (en) | Box-type substation | |
| CN221651389U (en) | Mounting structure for vacuum circuit breaker | |
| CN221553072U (en) | Fan frequency converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |