CN116168972A - Vacuum circuit breaker capable of detecting contact ablation degree in real time for inflatable cabinet - Google Patents
Vacuum circuit breaker capable of detecting contact ablation degree in real time for inflatable cabinet Download PDFInfo
- Publication number
- CN116168972A CN116168972A CN202310096367.7A CN202310096367A CN116168972A CN 116168972 A CN116168972 A CN 116168972A CN 202310096367 A CN202310096367 A CN 202310096367A CN 116168972 A CN116168972 A CN 116168972A
- Authority
- CN
- China
- Prior art keywords
- contact
- ablation
- circuit breaker
- contact ablation
- state display
- 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.)
- Pending
Links
Images
Classifications
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/0015—Means for testing or for inspecting contacts, e.g. wear indicator
-
- 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
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/40—Display of information, e.g. of data or controls
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to a vacuum circuit breaker for an inflatable cabinet, which can detect the ablation degree of a contact in real time, and is characterized in that: the circuit breaker comprises a circuit breaker body, a spring operating mechanism, a contact ablation indicating plate, a contact ablation comparison plate, a contact state display ring and a sensing module; the contact ablation degree monitoring device is arranged outside the metal corrugated pipe at the grounding end of the insulating pull rod, and is connected with a comparison plate provided with a mark nearby, so that the contact ablation degree of the vacuum circuit breaker can be monitored under the condition that the vacuum circuit breaker is switched on and electrified, further, the personal safety and the safety of detection equipment are ensured, and the operation and maintenance cost is reduced; the contact ablation degree monitoring device is arranged on the outer atmosphere side of the metal sealing plate, so that the interference of the high-voltage side electromagnetic field on the testing device is reduced or eliminated; the sensor is adopted to detect the erosion degree of the contact of the vacuum circuit breaker, so that real-time monitoring can be realized, whether the premonitory of faults exists can be judged as early as possible, the operation and maintenance cost is reduced, and the safety reliability and the automation degree of the operation of the power system are improved.
Description
Technical Field
The invention relates to the technical field of detection of contact ablation degree of a vacuum circuit breaker, in particular to a vacuum circuit breaker for an inflatable cabinet, which can detect the contact ablation degree in real time.
Background
In the field of switchgear devices, vacuum circuit breakers are widely used with the advantages of small volume, light weight, suitability for frequent operation, and no need for maintenance of the vacuum interrupter. The contact material of the vacuum interrupter is special, and the thickness of the contact material is only 3 mm. With the increase of the switching current times of the vacuum circuit breaker, the contact in the vacuum arc extinguishing chamber can be ablated, the contact ablation degree exceeds the allowable value, and the contact pressure vacuum circuit breaker can lose the switching and switching capacity. The contact ablation degree is an important index for judging the working state and the residual life of the vacuum circuit breaker, and real-time monitoring of the contact ablation degree of the vacuum circuit breaker is an important guarantee for keeping good work.
Conventionally, it has been a common method to provide contact ablation marks on the movable conducting rod of a vacuum interrupter. However, after the vacuum arc-extinguishing chamber is assembled in the circuit breaker, the vacuum arc-extinguishing chamber is generally positioned in a circuit breaker main loop movable support, and particularly after the vacuum arc-extinguishing chamber is used for an air charging cabinet and a solid sealing technology is adopted, the contact ablation mark of the vacuum arc-extinguishing chamber is difficult to observe and monitor, and cannot be observed and monitored. The existing vacuum circuit breaker with an on-line monitoring device, such as a Chinese patent with application publication number of CN 112349539A and application publication date of 2021.02.09, namely a permanent magnet vacuum circuit breaker with on-line monitoring of contact ablation in a vacuum arc extinguishing chamber, wherein a monitoring point is positioned on an insulating pull rod between the vacuum arc extinguishing chamber and a permanent magnet mechanism and is used for indirectly detecting contact ablation. Because the contact ablation monitoring point is at the electrified high-voltage end, the contact ablation monitoring point is easily interfered by an electromagnetic field of high-voltage measurement during electrified detection, the test precision is insufficient, and the safety is low.
Disclosure of Invention
The invention aims to solve the technical problem of providing the vacuum circuit breaker for the inflatable cabinet, which can detect the ablation degree of a contact in real time, can solve the problems that the ablation monitoring point of a common circuit breaker contact is at a charged high-voltage end, is easily interfered by an electromagnetic field of high-voltage detection during the charged detection, has insufficient test precision and is low in safety.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a but real-time detection contact ablation degree's vacuum circuit breaker for cabinet that aerifys which its innovation point lies in: the circuit breaker comprises a circuit breaker body, a spring operating mechanism, a contact ablation indicating plate, a contact ablation comparison plate, a contact state display ring and a sensing module;
the circuit breaker body is provided with a plurality of circuit breaker bodies, the circuit breaker bodies are mutually arranged on the spring operating mechanism in parallel, and the circuit breaker bodies extend into the spring operating mechanism and are connected with the output end of the spring operating mechanism;
the spring operating mechanism comprises a box body, an insulating pull rod, a contact pressure spring and a guide sleeve; the box body is provided with a mounting hole which is communicated with the breaker body; the inner wall of the box body is provided with a through hole for installing the sensing module; the insulation pull rod is arranged in the box body, one end of the insulation pull rod is connected with the breaker body, and the breaker body is operated to switch on and off through the insulation pull rod; the outer contour of the grounding end of the insulating pull rod is provided with a metal corrugated pipe; the contact pressure spring is arranged in the metal corrugated pipe of the outer contour of the grounding end of the insulation pull rod; the guide sleeve is nested on the insulating pull rod and connected to one end of the contact pressure spring, and the guide sleeve can move along with the expansion and contraction of the contact pressure spring;
the contact ablation indication plate is of an L-shaped structure, is arranged on the inner wall of the box body through a screw, and is provided with an observation waist-shaped groove;
the contact ablation comparison plate is arranged on the contact ablation indication plate and is positioned on the edge of the observation waist-shaped groove; the contact ablation comparison plate is provided with a color code, and the color code comprises a contact ablation qualified area color code and a contact ablation unqualified area color code positioned on one side of the contact ablation qualified area color code;
the contact state display ring is arranged on the guide sleeve and provided with a color code, the contact state display ring is positioned on the inner side of the contact ablation indication plate, and the contact state display ring and the contact ablation comparison plate can be judged by observing the position of the contact state display ring through the observation waist-shaped groove, so that the ablation degree of the contact can be judged according to the relative position of the contact state display ring and the color code of the contact ablation qualified area on the contact ablation comparison plate;
the sensing module is a visual sensor and is arranged on the through hole of the box body, and the position of the contact state display ring is monitored through the visual sensor.
Further, the color codes of the contact ablation qualified area on the contact ablation comparison plate and the color codes on the contact state display ring are green, and the widths of the green color codes are the same; and the color mark of the contact ablation disqualification area on the contact ablation comparison plate is red.
The invention has the advantages that:
1) According to the invention, the contact ablation degree monitoring device is arranged outside the metal corrugated pipe at the grounding end of the insulation pull rod, and is connected with the marked contrast plate nearby, so that the contact ablation degree of the vacuum circuit breaker can be monitored under the condition that the vacuum circuit breaker is switched on and electrified, thereby ensuring the personal safety and the safety of detection equipment and reducing the operation and maintenance cost; the contact ablation degree monitoring device is arranged on the outer atmosphere side of the metal sealing plate, so that the interference of the high-voltage side electromagnetic field on the testing device is reduced or eliminated; the erosion degree of the contact of the vacuum circuit breaker can be monitored in real time by adopting the sensor, and compared with the similar type, the sensor can judge whether the premonitory of faults exists as soon as possible, reduces the operation and maintenance cost and improves the safety reliability and the automation degree of the operation of the power system.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a schematic diagram of a vacuum circuit breaker for an air charging cabinet, which can detect the ablation degree of a contact in real time.
Fig. 2 is a partial enlarged view of a vacuum circuit breaker for a gas-filled tank, which can detect the ablation degree of a contact in real time.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The vacuum circuit breaker for the gas-filled cabinet, which is capable of detecting the contact ablation degree in real time, is shown in fig. 1 and 2, and comprises a circuit breaker body 1, a spring operating mechanism 2, a contact ablation indicating plate 3, a contact ablation comparison plate 4, a contact state display ring 5 and a sensing module 6.
The breaker body 1 has a plurality of, and breaker body 1 installs on spring operating mechanism 2 mutually parallel, and breaker body 1 extends to in the spring operating mechanism 2 and links to each other with the output of spring operating mechanism 2.
The spring operating mechanism 2 comprises a box body 21, an insulating pull rod 22, a contact pressure spring 23 and a guide sleeve 24; the box body 21 is provided with a mounting hole which is connected with the breaker body 1 in a conducting way; the inner wall of the box body 21 is provided with a through hole for installing the sensing module; the insulation pull rod 22 is arranged in the box body, one end of the insulation pull rod is connected with the breaker body 1, and the breaker body 1 is operated to switch on and off through the insulation pull rod 22; the outer contour of the grounding end of the insulating pull rod 22 is provided with a metal corrugated pipe; the contact pressure spring 23 is arranged in the metal corrugated pipe of the outer contour of the grounding end of the insulation pull rod 22; the guide sleeve 24 is nested on the insulating pull rod 22 and connected to one end of the contact pressure spring 23, and the guide sleeve 24 can move along with the expansion and contraction of the contact pressure spring 23.
The contact ablation indication plate 3 is of an L-shaped structure, the contact ablation indication plate 3 is arranged on the inner wall of the box body through a screw, and an observation waist-shaped groove is formed in the contact ablation indication plate 3.
The contact ablation comparison plate 4 is arranged on the contact ablation indication plate 3 and is positioned on the edge of the observation waist-shaped groove; the contact ablation contrast plate 4 is provided with a color code, and the color code comprises a contact ablation qualified area color code and a contact ablation unqualified area color code positioned on one side of the contact ablation qualified area color code.
The contact state display ring 5 is arranged on the guide sleeve and provided with a color code, the contact state display ring 5 is positioned on the inner side of the contact ablation indication plate 3, the position of the contact state display ring is observed through the observation waist-shaped groove, and the relative position of the contact state display ring 5 and the color code of the contact ablation qualified area on the contact ablation comparison plate 4 can be judged to judge the ablation degree of the contact.
The sensing module 6 is a visual sensor and is mounted on a through hole of the box 21, and the position of the contact state display ring 5 is monitored through the visual sensor.
The color code of the contact ablation qualified area on the contact ablation comparison plate 4 and the color code on the contact state display ring are green, and the widths of the green color codes are the same; the contact ablation failed areas on the contact ablation contrast plate 4 are colored red.
The working principle of the invention is as follows: generally, the contact ablation amount of the vacuum circuit breaker does not exceed 3mm, so that the green area of the contact state display ring can be set to 3mm, the green bandwidth of the contact ablation indication plate is set to 3mm, after the vacuum circuit breaker leaves a factory, the green area of the contact state display ring is aligned with the green area of the contact ablation comparison plate, the alignment condition can be clearly observed visually or by a sensor, in actual operation, due to contact ablation, the green area of the contact state display ring can move towards the red area of the contact ablation comparison plate, and the contact ablation is completely moved to the red area of the contact ablation comparison plate, and is larger than 3mm, so that the vacuum circuit breaker cannot be used.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. The utility model provides a but real-time detection contact ablation degree's vacuum circuit breaker for cabinet that aerifys which characterized in that: the circuit breaker comprises a circuit breaker body, a spring operating mechanism, a contact ablation indicating plate, a contact ablation comparison plate, a contact state display ring and a sensing module;
the circuit breaker body is provided with a plurality of circuit breaker bodies, the circuit breaker bodies are mutually arranged on the spring operating mechanism in parallel, and the circuit breaker bodies extend into the spring operating mechanism and are connected with the output end of the spring operating mechanism;
the spring operating mechanism comprises a box body, an insulating pull rod, a contact pressure spring and a guide sleeve; the box body is provided with a mounting hole which is communicated with the breaker body; the inner wall of the box body is provided with a through hole for installing the sensing module; the insulation pull rod is arranged in the box body, one end of the insulation pull rod is connected with the breaker body, and the breaker body is operated to switch on and off through the insulation pull rod; the outer contour of the grounding end of the insulating pull rod is provided with a metal corrugated pipe; the contact pressure spring is arranged in the metal corrugated pipe of the outer contour of the grounding end of the insulation pull rod; the guide sleeve is nested on the insulating pull rod and connected to one end of the contact pressure spring, and the guide sleeve can move along with the expansion and contraction of the contact pressure spring;
the contact ablation indication plate is of an L-shaped structure, is arranged on the inner wall of the box body through a screw, and is provided with an observation waist-shaped groove;
the contact ablation comparison plate is arranged on the contact ablation indication plate and is positioned on the edge of the observation waist-shaped groove; the contact ablation comparison plate is provided with a color code, and the color code comprises a contact ablation qualified area color code and a contact ablation unqualified area color code positioned on one side of the contact ablation qualified area color code;
the contact state display ring is arranged on the guide sleeve and provided with a color code, the contact state display ring is positioned on the inner side of the contact ablation indication plate, and the contact state display ring and the contact ablation comparison plate can be judged by observing the position of the contact state display ring through the observation waist-shaped groove, so that the ablation degree of the contact can be judged according to the relative position of the contact state display ring and the color code of the contact ablation qualified area on the contact ablation comparison plate;
the sensing module is a visual sensor and is arranged on the through hole of the box body, and the position of the contact state display ring is monitored through the visual sensor.
2. The vacuum circuit breaker for a gas-filled cabinet capable of detecting the ablation degree of a contact in real time according to claim 1, wherein: the color codes of the contact ablation qualified area on the contact ablation comparison plate and the color codes on the contact state display ring are green, and the widths of the green color codes are the same; and the color mark of the contact ablation disqualification area on the contact ablation comparison plate is red.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310096367.7A CN116168972A (en) | 2023-02-10 | 2023-02-10 | Vacuum circuit breaker capable of detecting contact ablation degree in real time for inflatable cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310096367.7A CN116168972A (en) | 2023-02-10 | 2023-02-10 | Vacuum circuit breaker capable of detecting contact ablation degree in real time for inflatable cabinet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116168972A true CN116168972A (en) | 2023-05-26 |
Family
ID=86419492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310096367.7A Pending CN116168972A (en) | 2023-02-10 | 2023-02-10 | Vacuum circuit breaker capable of detecting contact ablation degree in real time for inflatable cabinet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116168972A (en) |
-
2023
- 2023-02-10 CN CN202310096367.7A patent/CN116168972A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9279858B2 (en) | Cubicle type gas insulated switchgear monitoring and diagnosis system | |
| US6529009B2 (en) | Vacuum switch including vacuum-measurement devices, switchgear using the vacuum switch, and operation method thereof | |
| EP1763049B1 (en) | Vacuum switchgear | |
| KR102079865B1 (en) | Apparatus for checking of gas insulated switchgear | |
| JP2007202298A (en) | Switchgear | |
| CN105374622A (en) | Insulating pull rod, vacuum circuit breaker with insulating pull rod and method for monitoring wearing capacity of movable and static contacts of vacuum circuit breaker | |
| US6150625A (en) | Vacuum circuit breaker with contact wear indicator tool | |
| CN106449265B (en) | Vacuum circuit breaker | |
| US4864286A (en) | Switch operation monitoring apparatus | |
| CN110045273B (en) | SF (sulfur hexafluoride)6Online monitoring method for ablation degree of breaker contact | |
| US10036727B2 (en) | System and method to predict a usable life of a vacuum interrupter in the field | |
| CN210805558U (en) | Novel high-precision isolating switch opening and closing indicator | |
| CN101379579A (en) | Vacuum-type electrical switching apparatus | |
| CN214895609U (en) | Buried cable fault detection and positioning device | |
| US20230268723A1 (en) | Method for Determining the State of an Electrical Switchgear Assembly, Monitoring Unit for an Electrical Switchgear Assembly, And Electrical Switchgear Assembly | |
| CN112539930B (en) | GIS/GCB circuit breaker three-phase opening and closing state monitoring device and using method | |
| CN116168972A (en) | Vacuum circuit breaker capable of detecting contact ablation degree in real time for inflatable cabinet | |
| CN201314891Y (en) | On-line micro water content measuring device | |
| KR20180136808A (en) | Earthing switch for Gas Insulated Switchgear with measurement function of ground safety | |
| JP5225323B2 (en) | Method for detecting wear of arc contact of gas circuit breaker | |
| CN116313630A (en) | Vacuum circuit breaker for inflatable cabinet capable of monitoring overrun in real time | |
| CN113806913B (en) | SF based on arc energy 6 Method for predicting service life of arc extinguishing chamber of circuit breaker | |
| CN219319479U (en) | Monitoring system for vacuum circuit breaker | |
| CN113758653A (en) | Method for monitoring SF6 density relay in real time and pre-judging air leakage | |
| CN212432383U (en) | High-voltage isolating switch contact finger pressure detector |
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 |