CN210981293U - Monitoring device for monitoring vacuum circuit breaker and vacuum circuit breaker - Google Patents
Monitoring device for monitoring vacuum circuit breaker and vacuum circuit breaker Download PDFInfo
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- CN210981293U CN210981293U CN201921927483.4U CN201921927483U CN210981293U CN 210981293 U CN210981293 U CN 210981293U CN 201921927483 U CN201921927483 U CN 201921927483U CN 210981293 U CN210981293 U CN 210981293U
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- pull rod
- crank arm
- circuit breaker
- sensor
- monitoring device
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Abstract
A monitoring device for monitoring a vacuum circuit breaker, which is used for monitoring the relative distance between a crank arm and an insulating pull rod of the vacuum circuit breaker, is characterized in that the monitoring device comprises a sensor arranged on the crank arm; and a detected component which is arranged on the insulating pull rod and can be detected by the sensor; the insulating pull rod is fixedly connected with a moving contact of the vacuum circuit breaker; the motion of the crank arm drives the insulating pull rod to move, so that the moving contact moves between a closed position and an open position; the sensor outputs a sensor signal representing a relative distance between the crank arm and the insulated link based on a distance between the sensor and the detected member. A vacuum interrupter comprising a monitoring device as described above.
Description
Technical Field
The present disclosure relates to a monitoring device for monitoring a vacuum circuit breaker and a vacuum circuit breaker including the same.
Background
The application publication No. CN106783375A discloses an intelligent online detection device for abrasion loss of a vacuum tube contact of a circuit breaker, which relates to the field of detection structures of circuit breakers and comprises a microcomputer, and a vacuum arc extinguish chamber, an insulating pull rod, a tripping mechanism, a position sensing piece and a displacement sensor which are arranged in a case, wherein the vacuum arc extinguish chamber is provided with a static contact and a moving contact, the static contact is externally connected with an upper wire outlet end, the moving contact is externally connected with the insulating pull rod and a lower wire outlet end, the other end of the insulating pull rod is connected to the tripping mechanism through a crank arm, the insulating pull rod is also provided with the position sensing piece, the displacement sensor is also arranged in the moving direction of the position sensing piece, the displacement sensor. The circuit breaker has the advantages that the structure is reasonable, the actual position of the contact can be conveniently monitored in time, the abrasion loss of the contact in long-time work is calculated, the monitoring value is visually reflected, timely maintenance or replacement is reminded, and the service life of the circuit breaker is prolonged.
However, no technical solution exists in the prior art that can monitor the relative distance between the insulated pull rod and the crank arm.
SUMMERY OF THE UTILITY MODEL
In order to solve one or more technical defects in the prior art, according to one aspect of the present disclosure, a monitoring device for monitoring a vacuum circuit breaker is provided for monitoring a relative distance between a crank arm and an insulating rod of the vacuum circuit breaker.
The monitoring device comprises a sensor arranged on the crank arm; and a detected component which is arranged on the insulating pull rod and can be detected by the sensor.
The insulating pull rod is fixedly connected with a moving contact of the vacuum circuit breaker.
The motion of the crank arm drives the insulating pull rod to move, so that the moving contact moves between a closed position and an open position.
The sensor outputs a sensor signal representing a relative distance between the crank arm and the insulated link based on a distance between the sensor and the detected member.
According to the above aspect of the present disclosure, when the movable contact of the vacuum circuit breaker is closed in contact with the fixed contact of the vacuum circuit breaker, the sensor outputs a sensor signal representing the relative distance between the crank arm and the insulation pull rod based on the distance between the sensor and the detected component.
According to the above aspects of the present disclosure, the sensor is a hall sensor.
The detected member is a magnet.
The hall sensor can detect magnetism of the magnet, and can output a voltage signal based on the detected magnetism.
The voltage signal represents the relative distance between the crank arm and the insulated pull rod.
According to the above aspects of the present disclosure, the rotation of the output shaft of the vacuum circuit breaker drives the swing of the swing lever of the vacuum circuit breaker.
The swing lever is pivotally connected to the crank arm and the swing of the swing lever drives the crank arm to move.
According to the above aspects of the present disclosure, the crank arm acts on the first end of the insulation pull rod through a compression spring.
The detected component is arranged at a second end opposite to the first end of the insulating pull rod.
The compression spring is located between the first end and the second end of the insulating pull rod.
According to the above aspects of the disclosure, the movement of the crank arm drives the insulating pull rod through the compression action of the compression spring, and then drives the movable contact to move towards the fixed contact until the movable contact and the fixed contact are closed in contact.
According to the above aspects of the present disclosure, the compression spring is a pre-compressed spring.
When the moving contact is not in contact with the fixed contact for closing, the compression spring presses the crank arm against the second end of the insulating pull rod.
According to the above aspects of the present disclosure, when the movable contact is closed in contact with the fixed contact, the hall sensor outputs a voltage signal representing a relative distance between the crank arm and the second end of the insulating pull rod based on a distance between the hall sensor and the magnet.
According to another aspect of the present disclosure, there is provided a vacuum circuit breaker including the monitoring device according to the above aspects.
The above monitoring device according to the present disclosure may track the stylus erosion gap, i.e. contact overtravel, to obtain contact pressure. The best measurement accuracy is obtained by performing direct measurement, and errors caused by deformation of the sleeve are avoided. The above described monitoring device according to the present disclosure may also be installed late in the manufacturing process, even by contractors or end users or maintenance teams.
So that the manner in which the disclosure is made in detail herein can be better understood, and in which the contributions to the art may be better appreciated, the disclosure has been summarized rather broadly. There are, of course, embodiments of the disclosure that will be described below and which will form the subject matter of the claims appended hereto.
As such, those skilled in the art will appreciate that the conception upon which this disclosure is based may readily be utilized as a basis for the designing of other structures, methods and systems for carrying out the several purposes of the present disclosure. It is important, therefore, that the appended claims be regarded as including such equivalent constructions insofar as they do not depart from the spirit and scope of the present disclosure.
Drawings
The present disclosure will be better understood and its advantages will become more apparent to those skilled in the art from the following drawings. The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations and are not intended to limit the scope of the present disclosure.
Fig. 1 shows a schematic view of a monitoring device according to the present disclosure when the movable contact is not closed in contact with the stationary contact;
fig. 2 shows a schematic view of a monitoring device according to the present disclosure when a movable contact is closed in contact with a stationary contact.
Detailed Description
Specific embodiments according to the present disclosure are described below with reference to fig. 1 to 2.
According to an embodiment of the present disclosure, as shown in the schematic diagram of fig. 1, a movable contact 1 and a fixed contact 2 of a vacuum circuit breaker 3 are in a non-contact disconnection state in a vacuum chamber.
The monitoring device for monitoring a vacuum circuit breaker according to the present disclosure is used to monitor a relative distance (as indicated by a double-headed arrow of fig. 2) between a crank arm 4 and an insulating rod 5 of the vacuum circuit breaker.
The monitoring device comprises a sensor 6 arranged on the crank arm 4; and a detected member 7 provided on the insulating rod 5 and capable of being detected by the sensor.
The insulating pull rod 5 is fixedly connected with the movable contact 1 of the vacuum circuit breaker.
The movement of the crank arm 4 drives the insulating rod 5 to move, so that the movable contact 1 moves between a closed position (as shown in fig. 2) and an open position (as shown in fig. 1).
The sensor 6 outputs a sensor signal representing the relative distance between the crank arm 4 and the insulated link 5 based on the distance between the sensor 6 and the detected member 7.
According to the above embodiment of the present disclosure, when the movable contact 1 of the vacuum circuit breaker is closed in contact with the fixed contact 2 of the vacuum circuit breaker, the sensor 6 outputs a sensor signal representing the relative distance between the crank arm 4 and the insulation pull rod 5 based on the distance between the sensor 6 and the detected component 7.
According to the above various embodiments of the present disclosure, the sensor 6 is a hall sensor.
The detected member 7 is a magnet.
The hall sensor can detect magnetism of the magnet, and can output a voltage signal based on the detected magnetism.
The voltage signal represents the relative distance between the crank arm 4 and the insulated pull rod 5.
According to the above-described respective embodiments of the present disclosure, the rotation of the output shaft 8 of the vacuum circuit breaker drives the swing of the swing lever 9 of the vacuum circuit breaker.
The swing lever 9 is pivotably connected to the crank arm 4 and the swing of the swing lever 9 drives the crank arm 4 to move.
According to the above embodiments of the present disclosure, the crank arm 4 acts on the first end 5-1 of the insulating pull rod 5 through a compression spring 10.
The detected member 7 (e.g., a magnet) is disposed at a second end 5-2 opposite to the first end 5-1 of the insulating rod 5.
The compression spring 10 is located between the first end 5-1 and the second end 5-2 of the insulating pull rod.
According to the above embodiments of the present disclosure, the crank arm 4 is slidably disposed on the insulating pull rod 5, and the movement of the crank arm 4 drives the insulating pull rod 5 (the compression spring 10 abuts against the second end 5-2) by the compression action on the compression spring 10, so as to drive the movable contact 1 to move towards the stationary contact 2, until the movable contact 1 and the stationary contact 2 are closed in contact.
According to the various embodiments of the present disclosure described above, the compression spring 10 is a pre-compressed spring.
When the movable contact 1 is not in contact with the fixed contact 2 to be closed, the compression spring 10 presses the crank arm 4 against the second end 5-2 of the insulating pull rod 5.
According to the above embodiments of the present disclosure, when the movable contact 1 is closed in contact with the fixed contact 2, the hall sensor outputs a voltage signal representing the relative distance between the crank arm 4 and the second end 5-2 of the insulating pull rod 5 based on the distance between the hall sensor and the magnet.
According to another embodiment of the present disclosure, a vacuum interrupter 3 is provided, which comprises a monitoring device as described in the above respective embodiments.
While the invention has been described in the specification and illustrated in the drawings with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention as defined in the claims. Moreover, the combination and arrangement of features, elements and/or functions between specific embodiments herein is clearly apparent and thus, in light of this disclosure, one skilled in the art will appreciate that features, elements and/or functions of an embodiment may be incorporated into another specific embodiment as appropriate, unless described otherwise, above. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment illustrated by the drawings and described in the specification as the best mode presently contemplated for carrying out this invention, but that the invention will include all embodiments falling within the scope of the foregoing description and the appended claims.
Claims (9)
1. A monitoring device for monitoring a vacuum circuit breaker, which is used for monitoring the relative distance between a crank arm and an insulating pull rod of the vacuum circuit breaker,
the monitoring device comprises a sensor arranged on the crank arm; and a detected component which is arranged on the insulating pull rod and can be detected by the sensor;
the insulating pull rod is fixedly connected with a moving contact of the vacuum circuit breaker;
the motion of the crank arm drives the insulating pull rod to move, so that the moving contact moves between a closed position and an open position;
the sensor outputs a sensor signal representing a relative distance between the crank arm and the insulated link based on a distance between the sensor and the detected member.
2. The monitoring device of claim 1,
when the moving contact of the vacuum circuit breaker is contacted and closed with the fixed contact of the vacuum circuit breaker, the sensor outputs a sensor signal representing the relative distance between the crank arm and the insulating pull rod based on the distance between the sensor and the detected component.
3. The monitoring device of claim 2,
the sensor is a hall sensor;
the detected member is a magnet;
the hall sensor is capable of detecting magnetism of the magnet and outputting a voltage signal based on the detected magnetism;
the voltage signal represents the relative distance between the crank arm and the insulated pull rod.
4. The monitoring device of claim 3,
the rotation of the output shaft of the vacuum circuit breaker drives the swing of the swing rod of the vacuum circuit breaker;
the swing lever is pivotally connected to the crank arm and the swing of the swing lever drives the crank arm to move.
5. The monitoring device of claim 4,
the crank arm acts on the first end of the insulating pull rod through a compression spring;
the detected component is arranged at a second end opposite to the first end of the insulating pull rod;
the compression spring is located between the first end and the second end of the insulating pull rod.
6. The monitoring device of claim 5,
the motion of the crank arm drives the insulating pull rod through the compression action on the compression spring so as to drive the moving contact to move towards the static contact until the moving contact is closed by contacting with the static contact.
7. The monitoring device of claim 5,
the compression spring is a pre-compressed spring;
when the moving contact is not in contact with the fixed contact for closing, the compression spring presses the crank arm against the second end of the insulating pull rod.
8. The monitoring device of claim 6,
when the moving contact is closed in contact with the fixed contact, the Hall sensor outputs a voltage signal representing the relative distance between the crank arm and the second end of the insulating pull rod based on the distance between the Hall sensor and the magnet.
9. Vacuum interrupter, characterized in that the vacuum interrupter comprises a monitoring device according to one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927483.4U CN210981293U (en) | 2019-11-08 | 2019-11-08 | Monitoring device for monitoring vacuum circuit breaker and vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921927483.4U CN210981293U (en) | 2019-11-08 | 2019-11-08 | Monitoring device for monitoring vacuum circuit breaker and vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210981293U true CN210981293U (en) | 2020-07-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921927483.4U Active CN210981293U (en) | 2019-11-08 | 2019-11-08 | Monitoring device for monitoring vacuum circuit breaker and vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210981293U (en) |
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2019
- 2019-11-08 CN CN201921927483.4U patent/CN210981293U/en active Active
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