CN211578636U - Vacuum circuit breaker and circuit breaker working state monitoring system thereof - Google Patents
Vacuum circuit breaker and circuit breaker working state monitoring system thereof Download PDFInfo
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- CN211578636U CN211578636U CN202020590382.9U CN202020590382U CN211578636U CN 211578636 U CN211578636 U CN 211578636U CN 202020590382 U CN202020590382 U CN 202020590382U CN 211578636 U CN211578636 U CN 211578636U
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- circuit breaker
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Abstract
The utility model discloses a vacuum circuit breaker and circuit breaker operating condition monitoring system thereof, circuit breaker operating condition monitoring system include install the conflict device on moving contact or static contact one, install the pressure sensor on another and be used for receiving pressure sensor's signal judges whether closed controller of circuit breaker, the conflict device includes the ejector pin, the ejector pin can the moving contact is close to the in-process of static contact with the pressure sensor butt. The utility model provides a circuit breaker operating condition monitoring system utilizes conflict device with pressure sensor's cooperation can effectively monitor the moving contact with the contact condition of static contact to this monitoring circuit breaker's switching state, control accuracy is high, and the monitoring result is accurate reliable.
Description
Technical Field
The utility model relates to an electric power safety equipment field especially relates to a circuit breaker operating condition monitoring system. Furthermore, the utility model discloses still relate to a vacuum circuit breaker including above-mentioned circuit breaker operating condition monitoring system.
Background
The circuit breaker is an important switch device in a power system, and is used for controlling the input and the exit of a power line or equipment and protecting the normal operation of the line in the operation power grid. In all grid operation accidents, accidents caused by high-voltage circuit breakers account for a considerable proportion of both times and power failure times caused by the accidents. Therefore, carry out on-line monitoring to the circuit breaker, replace traditional periodic overhaul mode, the operating condition who in time knows the circuit breaker is to improving the power supply reliability decisive meaning.
The intelligent circuit breaker mainly comprises a microprocessor unit, a signal monitoring and collecting unit, a switching value input unit, a display and keyboard unit, an execution output unit, a communication interface, a power supply and the like. Because the primary circuit of the circuit breaker has the characteristics of high voltage, large current and strong magnetic field environment, the online monitoring of the circuit breaker is difficult to realize. The monitoring of present circuit breaker mechanical parameter usually realizes through the moving contact of monitoring circuit breaker, however, this kind of monitoring mode is to the contact wearing and tearing of circuit breaker, the fatigue deformation of contact compression spring can not be measured, contact wearing and tearing and spring deformation all will lead to the contact pressure of the contact of circuit breaker to diminish, increase the bounce time when the contact closes a floodgate, simultaneously, cause the resistance increase in primary circuit, the long-term work temperature rise of direct influence circuit breaker.
For the vacuum circuit breaker, a butt contact method (butt contact) is generally adopted. The moving contact can not advance any more after contacting the static contact, and the contact pressure of the contact is provided by a compression spring (sometimes called a closing buffer spring) of each pole of contact. The contact compression spring is used for providing contact pressure for the butt contact under the action of pressure; secondly, the contact is ensured to still keep certain contact pressure after being worn, so that the contact is reliably contacted, and thirdly, the switch-on bounce is prevented. When the contact compression spring fails, the circuit breaker fails or malfunctions. In conclusion, online monitoring of the contact compression spring is achieved, and the method has practical significance for monitoring of the circuit breaker.
Therefore, how to improve the working reliability of the circuit breaker is a technical problem that needs to be solved by those skilled in the art at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a circuit breaker operating condition monitoring system, this circuit breaker operating condition monitoring system can accurate monitoring circuit breaker's operating condition, and the reliability is high. Another object of the present invention is to provide a vacuum circuit breaker including the above-mentioned circuit breaker operating condition monitoring system.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a circuit breaker operating condition monitoring system, is including installing conflict device on moving contact or static contact one, installing the pressure sensor on the other and being used for receiving pressure sensor's signal and judging whether closed controller of circuit breaker body, conflict device includes the ejector pin, the ejector pin can the moving contact be close to the in-process of static contact with pressure sensor butt.
Preferably, the device further comprises an installation plate installed on the inner side of the static contact, the abutting device is arranged on the installation plate, and the pressure sensor is connected with the moving contact.
Preferably, the pressure sensor is arranged on the side wall of the insulating pull rod, and the position of the interference device corresponds to that of the pressure sensor.
Preferably, the collision device further comprises an elastic component connected with the ejector rod, and the ejector rod can compress the elastic component.
Preferably, the collision device further comprises a housing for placing the elastic component and limiting the telescopic direction of the push rod.
Preferably, the circuit breaker further comprises a box body for placing the circuit breaker body, a hall sensor arranged on the inner side of the box body and at least two metal sheets connected with the moving contact, wherein at least one metal sheet corresponds to the hall sensor when the circuit breaker body is closed, and at least one metal sheet corresponds to the hall sensor when the circuit breaker body is opened.
Preferably, at least two of the metal sheets are arranged on the side wall of the insulating pull rod and are arranged along the extending direction of the insulating pull rod.
Preferably, the device further comprises a reflector connected with the fixed contact and a laser ranging sensor connected with the moving contact, and the laser ranging sensor can monitor the distance between the laser ranging sensor and the reflector and then send the distance to the controller.
Preferably, the laser ranging sensor is mounted on the side wall of the insulating pull rod.
The utility model also provides a vacuum circuit breaker, including any one of the aforesaid circuit breaker operating condition monitoring system.
The utility model provides a circuit breaker operating condition monitoring system, including installing conflict device on moving contact or static contact one, installing pressure sensor on another and being used for receiving pressure sensor's signal judges whether closed controller of circuit breaker body, conflict device includes the ejector pin, the ejector pin can the moving contact is close to the in-process of static contact with the pressure sensor butt. The utility model provides a circuit breaker operating condition monitoring system utilizes conflict device with pressure sensor's cooperation can effectively monitor the moving contact with the contact condition of static contact to this switching state of monitoring circuit breaker body, control accuracy is high, and the monitoring result is accurate reliable.
The utility model provides a vacuum circuit breaker is equipped with above-mentioned circuit breaker operating condition monitoring system, because circuit breaker operating condition monitoring system has above-mentioned technological effect, consequently, the vacuum circuit breaker who is equipped with this circuit breaker operating condition monitoring system should also have corresponding technological effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an embodiment of a circuit breaker working state monitoring system provided by the present invention;
wherein: a box body-1; a collision device-2; an elastic member-3; a mandril-4; a pressure sensor-5; a Hall sensor-6; sheet metal-7; a circuit breaker body-8; a mounting plate-9; 10 parts of a reflective sheet; a static contact-11; a movable contact-12; a laser ranging sensor-13; and an insulated pull rod-14.
Detailed Description
The core of the utility model is to provide a circuit breaker operating condition monitoring system, this circuit breaker operating condition monitoring system can accurate monitoring circuit breaker's operating condition, and the reliability is high. The utility model discloses a another core provides a vacuum circuit breaker including above-mentioned circuit breaker operating condition monitoring system.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a circuit breaker working condition monitoring system according to the present invention.
In this embodiment, the circuit breaker operating condition monitoring system includes the interference device 2, the pressure sensor 5, and the controller.
The contact device 2 is installed on one of the moving contact 12 or the fixed contact 11, the pressure sensor 5 is installed on the other, the controller is used for receiving signals of the pressure sensor 5 and judging whether the breaker body 8 is closed or not, the contact device 2 comprises a push rod 4, the push rod 4 can be abutted against the pressure sensor 5 in the process that the moving contact 12 is close to the fixed contact 11, and the pressure sensor 5 obtains a pressure value between the pressure value and the push rod 4 and sends the pressure value to the controller.
The utility model provides a circuit breaker operating condition monitoring system utilizes conflict device 2 and pressure sensor 5's cooperation, can effectively monitor moving contact 12 and the contact condition of static contact 11 to this switching state of monitoring circuit breaker body 8, control accuracy is high, and the monitoring result is accurate reliable.
Specifically, the monitoring system for the working state of the circuit breaker provided in this embodiment is preferably applied to a vacuum circuit breaker, the moving contact 12 at the upper end of the insulating pull rod 14 is connected to the fixed contact 11 of the circuit breaker body 8, the switching-on/off operating mechanism is connected to the lower end of the insulating pull rod 14, the circuit breaker body 8 is provided with the abutting device 2, the abutting device 2 is in abutting fit with the pressure sensor 5 fixed on the insulating pull rod 14 to measure the abutting pressure between the moving contact 12 and the fixed contact 11, and transmit the measured pressure value to the controller, the controller compares the received pressure value with a preset standard pressure value, when the pressure value received by the controller is lower than the preset pressure value, it indicates that the moving contact 12 is in abnormal contact with the fixed contact 11, and feeds back the pressure value to the.
On the basis of the above embodiments, the device further includes an installation plate 9 installed inside the fixed contact 11, the abutting device 2 is installed on the installation plate 9, and the pressure sensor 5 is connected with the movable contact 12. Further, the pressure sensor 5 is disposed on the sidewall of the insulated rod 14, and the interference means 2 corresponds to the position of the pressure sensor 5.
On the basis of the above embodiments, the collision device 2 further includes an elastic member 3 connected to the top rod 4, and the top rod 4 can compress the elastic member 3. Further, the abutting device 2 further comprises a housing for placing the elastic component 3 and limiting the extending and contracting direction of the mandril 4.
Specifically, conflict device 2 includes the casing and sets up expanding spring and ejector pin 4 in the casing, and expanding spring and casing connection are passed through to the one end of ejector pin 4, and the casing is stretched out to the other end to contradict the cooperation with pressure sensor 5, guarantee through setting up expanding spring that ejector pin 4 elasticity is in order not to interfere moving contact 12 and the contact of static contact 11 when realizing contradicting with pressure sensor 5.
In addition to the above embodiments, the breaker further includes a case 1 into which the breaker body 8 is placed, a hall sensor 6 mounted inside the case 1, and at least two metal pieces 7 connected to the movable contact 12, where at least one metal piece 7 corresponds to the position of the hall sensor 6 when the breaker body 8 is closed, and at least one metal piece 7 corresponds to the position of the hall sensor 6 when the breaker body 8 is opened.
Further, at least two metal sheets 7 are arranged on the side wall of the insulating pull rod 14 and are arranged along the extending direction of the insulating pull rod 14.
Specifically, by arranging the hall sensor 6 and the pair of metal sheets 7 matched with the hall sensor 6, the hall sensor 6 is arranged on the side surface in the box body 1, the pair of metal sheets 7 is arranged on the insulating pull rod 14 in the vertical direction to correspond to the position of the breaker body 8 when being opened and closed, and whether the moving contact 12 is moved in place or not is monitored by the hall sensor 6. Preferably, the hall sensor 6 is disposed at a side of the case 1 to reduce magnetic field interference.
On the basis of the above embodiments, the device further includes a reflector 10 connected to the fixed contact 11 and a laser ranging sensor 13 connected to the movable contact 12, and the laser ranging sensor 13 can monitor the distance between the reflector 10 and the laser ranging sensor 13 and then send the distance to the controller. Further, a laser ranging sensor 13 is installed on a side wall of the insulating rod 14.
Specifically, laser rangefinder sensor 13 sets up on insulating pull rod 14, and the reflector panel cooperatees with laser rangefinder sensor 13 to measure the displacement size of moving contact 12 when the switch of circuit breaker body 8 through laser displacement sensor, and transmit the displacement size that records to the controller, the controller is judged according to the displacement size of receiving whether accord with the standard, realizes the monitoring.
Preferably, conflict device 2 and reflector panel are all fixed on mounting panel 9, and mounting panel 9 sets up on circuit breaker body 8, and sets up pressure sensor 5 and laser rangefinder sensor 13 on insulating pull rod 14 in order to avoid the strong magnetic interference of circuit breaker body 8 production.
Except above-mentioned circuit breaker operating condition monitoring system, the utility model discloses still provide a vacuum circuit breaker including above-mentioned circuit breaker operating condition monitoring system, this vacuum circuit breaker's each partial structure of other please refer to prior art, and this text is no longer repeated.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It is right above the utility model provides a circuit breaker operating condition monitoring system has carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. The monitoring system for the working state of the circuit breaker is characterized by comprising a collision device (2) arranged on one of a moving contact (12) or a fixed contact (11), a pressure sensor (5) arranged on the other and a controller used for receiving a signal of the pressure sensor (5) and judging whether a circuit breaker body (8) is closed, wherein the collision device (2) comprises a push rod (4), and the push rod (4) can be abutted against the pressure sensor (5) in the process that the moving contact (12) is close to the fixed contact (11).
2. The system for monitoring the working state of the circuit breaker according to claim 1, further comprising a mounting plate (9) mounted inside the fixed contact (11), wherein the interference device (2) is disposed on the mounting plate (9), and the pressure sensor (5) is connected to the movable contact (12).
3. The circuit breaker operating condition monitoring system according to claim 2, characterized in that said pressure sensor (5) is arranged on the side wall of the insulating tie (14), said interference means (2) corresponding to the position of said pressure sensor (5).
4. The circuit breaker operating condition monitoring system of claim 1, wherein the interference means (2) further comprises an elastic member (3) connected to the ejector (4), the ejector (4) being capable of compressing the elastic member (3).
5. The circuit breaker operating condition monitoring system according to claim 4, wherein the collision means (2) further comprises a housing for placing the elastic member (3) and limiting the extension and retraction direction of the push rod (4).
6. The monitoring system of the working state of the circuit breaker according to any one of the claims 1 to 5, characterized by further comprising a box body (1) for placing the circuit breaker body (8), a Hall sensor (6) installed inside the box body (1) and at least two metal sheets (7) connected with the movable contact (12), wherein at least one metal sheet (7) corresponds to the position of the Hall sensor (6) when the circuit breaker body (8) is closed, and at least one metal sheet (7) corresponds to the position of the Hall sensor (6) when the circuit breaker body (8) is opened.
7. The circuit breaker operating condition monitoring system according to claim 6, characterized in that at least two of said metal sheets (7) are each provided on a side wall of an insulating tie (14) and are arranged in the extension direction of said insulating tie (14).
8. The system for monitoring the working state of the circuit breaker according to any one of claims 1 to 5, further comprising a reflector (10) connected to the fixed contact (11) and a laser distance measuring sensor (13) connected to the movable contact (12), wherein the laser distance measuring sensor (13) can monitor the distance between the laser distance measuring sensor and the reflector (10) and then send the distance to the controller.
9. Breaker operating condition monitoring system according to claim 8, characterized in that the laser distance measuring sensor (13) is mounted on a side wall of the insulating tie (14).
10. A vacuum circuit breaker comprising a circuit breaker operating condition monitoring system, wherein the circuit breaker operating condition monitoring system is the circuit breaker operating condition monitoring system of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590382.9U CN211578636U (en) | 2020-04-20 | 2020-04-20 | Vacuum circuit breaker and circuit breaker working state monitoring system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020590382.9U CN211578636U (en) | 2020-04-20 | 2020-04-20 | Vacuum circuit breaker and circuit breaker working state monitoring system thereof |
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| Publication Number | Publication Date |
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| CN211578636U true CN211578636U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020590382.9U Active CN211578636U (en) | 2020-04-20 | 2020-04-20 | Vacuum circuit breaker and circuit breaker working state monitoring system thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731124A (en) * | 2020-12-04 | 2021-04-30 | 成都飞机工业（集团）有限责任公司 | Aviation distribution box circuit breaker monitoring system |
| CN113012979A (en) * | 2021-03-01 | 2021-06-22 | 云南电网有限责任公司电力科学研究院 | Vacuum arc-extinguishing chamber triggered by ultraviolet rays |
| CN117153640A (en) * | 2023-10-10 | 2023-12-01 | 杭州天卓网络有限公司 | Safe and anti-leakage intelligent circuit breaker and control method thereof |
| CN117690751A (en) * | 2023-12-27 | 2024-03-12 | 晨诺电气科技集团有限公司 | Circuit breaker operating mechanism with photoelectric sensor |
| CN117766349A (en) * | 2024-01-05 | 2024-03-26 | 阿斯通(山东)开关有限公司 | Intelligent circuit breaker with angular displacement sensor |
-
2020
- 2020-04-20 CN CN202020590382.9U patent/CN211578636U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112731124A (en) * | 2020-12-04 | 2021-04-30 | 成都飞机工业（集团）有限责任公司 | Aviation distribution box circuit breaker monitoring system |
| CN113012979A (en) * | 2021-03-01 | 2021-06-22 | 云南电网有限责任公司电力科学研究院 | Vacuum arc-extinguishing chamber triggered by ultraviolet rays |
| CN117153640A (en) * | 2023-10-10 | 2023-12-01 | 杭州天卓网络有限公司 | Safe and anti-leakage intelligent circuit breaker and control method thereof |
| CN117153640B (en) * | 2023-10-10 | 2024-03-15 | 杭州天卓网络有限公司 | Safe and anti-leakage intelligent circuit breaker and control method thereof |
| CN117690751A (en) * | 2023-12-27 | 2024-03-12 | 晨诺电气科技集团有限公司 | Circuit breaker operating mechanism with photoelectric sensor |
| CN117766349A (en) * | 2024-01-05 | 2024-03-26 | 阿斯通(山东)开关有限公司 | Intelligent circuit breaker with angular displacement sensor |
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Denomination of utility model: A Vacuum Circuit Breaker and Its Working State Monitoring System Effective date of registration: 20230508 Granted publication date: 20200925 Pledgee: China Everbright Bank Limited by Share Ltd. Zhengzhou high yield road sub branch Pledgor: SUOLING ELECTRIC Co.,Ltd. Registration number: Y2023980040037 |