阅读说明：本技术 一种真空断路器信号反馈机构 (Vacuum circuit breaker signal feedback mechanism ) 是由 荣维忠 刘于庆 韩先艳 于 2019-11-29 设计创作，主要内容包括：本发明提供了一种真空断路器信号反馈机构,包括断路器壳体,断路器壳体内左右对称地设有左灭弧室以及右灭弧室,左灭弧室与右灭弧室各自的动触头均连接有一连杆机构,连杆机构包括伸缩杆、套杆以及拐臂,还包括第一微动开关、第二微动开关、第一凸块以及第二凸块,第一凸块以及第二凸块分别设置于其中一个拐臂的上下两侧,在动触头合闸到位时,第一凸块与第一微动开关接触并反馈合闸到位信号,在动触头分闸到位时,第二凸块与第二微动开关接触并反馈分闸到位信号。本发明通过第一凸块、第二凸块、第一微动开关以及第二微动开关,本真空断路器信号反馈机构可以对断路器的分合闸信号进行监测,其整体结构简单,便于安装实现。(The invention provides a signal feedback mechanism of a vacuum circuit breaker, which comprises a circuit breaker shell, wherein a left arc extinguish chamber and a right arc extinguish chamber are symmetrically arranged in the circuit breaker shell from left to right, moving contacts of the left arc extinguish chamber and the right arc extinguish chamber are respectively connected with a connecting rod mechanism, the connecting rod mechanism comprises a telescopic rod, a sleeve rod and a connecting lever, and further comprises a first micro switch, a second micro switch, a first lug and a second lug, the first lug and the second lug are respectively arranged on the upper side and the lower side of one connecting lever, when the moving contacts are in place for switching, the first lug is in contact with the first micro switch and feeds back a switching-on in-place signal, and when the moving contacts are in place for switching, the second lug is in contact with the second micro switch and. According to the invention, through the first lug, the second lug, the first microswitch and the second microswitch, the signal feedback mechanism of the vacuum circuit breaker can monitor the opening and closing signals of the circuit breaker, and has a simple integral structure and is convenient to install and realize.)

1. A signal feedback mechanism of a vacuum circuit breaker comprises a circuit breaker shell, wherein a left arc extinguish chamber and a right arc extinguish chamber are symmetrically arranged in the circuit breaker shell in the left-right direction, a certain distance is reserved between the left arc extinguish chamber and the right arc extinguish chamber, a fixed contact and a movable contact are respectively arranged in the left arc extinguish chamber and the right arc extinguish chamber, the respective movable contacts of the left arc extinguish chamber and the right arc extinguish chamber are respectively connected with a connecting rod mechanism, the connecting rod mechanism comprises a telescopic rod, a sleeve rod and a connecting lever, the telescopic rod is horizontally arranged, one end of the sleeve rod is a cavity body, one end of the telescopic rod is fixedly connected with the leading-out ends of the automatic conducting rods of the left arc extinguish chamber and the right arc extinguish chamber, the other end of the telescopic rod extends into the cavity body and is elastically connected with the sleeve rod, one end of, the circuit breaker is characterized by further comprising a first micro switch, a second micro switch, a first lug and a second lug, wherein the first micro switch and the second micro switch are arranged in the shell of the circuit breaker, the first lug and the second lug are respectively arranged on the upper side and the lower side of one of the crank arms, when the moving contact is in place for switching on, the first lug is in contact with the first micro switch and feeds back a switching-on in-place signal, and when the moving contact is in place for switching off, the second lug is in contact with the second micro switch and feeds back a switching-off in-place signal.

2. The signal feedback mechanism of claim 1, wherein the first microswitch roller is gradually compressed by the first protrusion during the closing of the movable contact, the first microswitch roller feeds back a closing in-place signal when the movable contact is closed in place, the second microswitch roller is gradually compressed by the second protrusion during the opening of the movable contact, and the second microswitch roller feeds back an opening in-place signal when the movable contact is opened in place.

3. The signal feedback mechanism of vacuum circuit breaker according to claim 2, further comprising a third micro switch, a fourth micro switch, a third protrusion and a fourth protrusion, wherein the third micro switch and the fourth micro switch are disposed in the breaker housing, the third protrusion and the fourth protrusion are respectively disposed on the upper side and the lower side of the other crank arm, when the moving contact is in place, the third protrusion contacts with the third micro switch and feeds back a closing in-place signal, and when the moving contact is in place, the fourth protrusion contacts with the fourth micro switch and feeds back a opening in-place signal.

4. The signal feedback mechanism of claim 3, wherein the third microswitch roller is gradually compressed by the third protrusion during the closing of the movable contact, the third microswitch roller feeds back a closing in-place signal when the movable contact is closed in place, the fourth microswitch roller is gradually compressed by the fourth protrusion during the opening of the movable contact, and the fourth microswitch roller feeds back an opening in-place signal when the movable contact is opened in place.

5. The signal feedback mechanism as claimed in claim 4, wherein each of the first and third micro-switches has a first terminal for connecting a cable for transmitting the moving contact closing in-place signal, and each of the second and fourth micro-switches has a second terminal for connecting a cable for transmitting the moving contact opening in-place signal.

6. The signal feedback mechanism of vacuum circuit breaker according to claim 5, further comprising a controller, wherein the controller is electrically connected to the first, second, third and fourth micro-switches respectively, and is configured to receive signals indicating that the moving contact is in a closed position and an open position.

7. The signal feedback mechanism of vacuum circuit breaker according to claim 6, wherein a plurality of sliding grooves are uniformly formed on the inner wall of the hollow cavity, the telescopic rod is sleeved with a sliding block, the sliding block is located in the hollow cavity and slidably connected with the sliding grooves, a stop block is arranged in the inner wall of the hollow cavity, the stop block is spaced from the sliding block, a coil spring is connected between the stop block and the sliding block, the coil spring is sleeved on the telescopic rod, and the telescopic rod is elastically connected with the sleeve rod through the coil spring.

8. The signal feedback mechanism for vacuum circuit breaker according to claim 7, further comprising a driving mechanism connected to the insulating rod for driving the insulating rod to move up and down.

9. The signal feedback mechanism for a vacuum interrupter as claimed in claim 8, wherein said drive mechanism is a hydraulic drive mechanism.

Technical Field

The invention relates to the technical field of circuit breakers, in particular to a signal feedback mechanism of a vacuum circuit breaker.

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, and has the advantages of small volume, no need of maintenance for arc extinguishing and the like. Because the circuit breaker is not in place and an electric arc may be formed, and then a contact of a circuit device is burnt, the in-place signal of the circuit breaker is required to be detected, and the existing circuit breaker opening and closing signal feedback device is complex in structure and difficult to realize.

After a lot of searches, some typical prior arts are found, for example, patent application No. 201711285332.9 discloses a signal feedback mechanism of a vacuum circuit breaker, which converts the mechanical motion state of the circuit breaker into an electric signal to be transmitted to a train control system, and the signal feedback mechanism has a simple and compact structure, is easy to realize, and effectively and reliably transmits the opening and closing state signals of the circuit breaker. For another example, patent application No. 201510840956.7 discloses a feedback device for opening and closing signals, which can avoid the problems of arcing and contact burning caused by improper opening and closing and failure of feedback. Also, for example, patent application No. 201120356535.4 discloses a circuit breaker operation circuit device, which has a feature of transmitting an opening/closing state signal of a switch to a controller through an opening/closing signal, and can monitor a state of the circuit breaker well.

Therefore, for the circuit breaker opening and closing signal feedback mechanism, many practical problems (such as simplified structure and the like) to be treated urgently in practical application still have unreported specific solutions.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention provides a signal feedback mechanism of a vacuum circuit breaker, which has the following specific technical scheme:

a signal feedback mechanism of a vacuum circuit breaker comprises a circuit breaker shell, wherein a left arc extinguish chamber and a right arc extinguish chamber are symmetrically arranged in the circuit breaker shell in a left-right mode, a certain distance is reserved between the left arc extinguish chamber and the right arc extinguish chamber, a fixed contact and a movable contact are arranged in the left arc extinguish chamber and the right arc extinguish chamber respectively, the respective movable contacts of the left arc extinguish chamber and the right arc extinguish chamber are connected with a connecting rod mechanism, the connecting rod mechanism comprises a telescopic rod, a sleeve rod and a connecting lever, the telescopic rod is horizontally arranged, one end of the sleeve rod is a cavity body, one end of the telescopic rod is fixedly connected with leading-out ends of automatic conducting rods of the left arc extinguish chamber and the right arc extinguish chamber respectively, the other end of the telescopic rod extends into the cavity body and is elastically connected with the sleeve rod, one end of the connecting lever is pivoted with the other end of the sleeve rod, an, the insulating pull rod moves up and down to drive the connecting rod mechanism to move synchronously, so that respective moving contacts in the left arc extinguish chamber and the right arc extinguish chamber are driven to realize opening and closing movements with corresponding fixed contacts;

the vacuum circuit breaker signal feedback mechanism further comprises a first microswitch, a second microswitch, a first lug and a second lug, wherein the first microswitch and the second microswitch are arranged in the circuit breaker shell, the first lug and the second lug are respectively arranged on the upper side and the lower side of one connecting lever, when the moving contact is switched on in place, the first lug is in contact with the first microswitch and feeds back a signal that the switching-on is in place, and when the moving contact is switched off in place, the second lug is in contact with the second microswitch and feeds back a signal that the switching-off is in place.

Optionally, in the moving contact switching-on process, the first micro-switch roller is gradually compressed by the first bump, when the moving contact is switched on in place, the first micro-switch feeds back a switching-on in place signal, in the moving contact switching-off process, the second micro-switch roller is gradually compressed by the second bump, and when the moving contact is switched off in place, the second micro-switch feeds back a switching-off in place signal.

Optionally, the vacuum circuit breaker signal feedback mechanism further includes a third micro switch, a fourth micro switch, a third bump and a fourth bump, the third micro switch and the fourth micro switch are disposed in the circuit breaker housing, the third bump and the fourth bump are disposed on the upper side and the lower side of another crank arm respectively, when the moving contact is switched on in place, the third bump contacts with the third micro switch and feeds back a signal indicating that the switching-on is in place, and when the moving contact is switched off in place, the fourth bump contacts with the fourth micro switch and feeds back a signal indicating that the switching-off is in place.

Optionally, in the moving contact switching-on process, the third micro-switch roller is gradually compressed by the third bump, when the moving contact switching-on is in place, the third micro-switch feeds back a switching-on in-place signal, in the moving contact switching-off process, the fourth micro-switch roller is gradually compressed by the fourth bump, and when the moving contact switching-off is in place, the fourth micro-switch feeds back a switching-off in-place signal.

Optionally, the first microswitch and the third microswitch both have a first terminal for connecting a cable for transmitting a moving contact switch-on in-place signal, and the second microswitch and the fourth microswitch both have a second terminal for connecting a cable for transmitting a moving contact switch-off in-place signal.

Optionally, the signal feedback mechanism of the vacuum circuit breaker further comprises a controller, and the controller is electrically connected with the first microswitch, the second microswitch, the third microswitch and the fourth microswitch respectively, and is used for receiving signals of the moving contact for switching on and switching off in place.

Optionally, a plurality of chutes are uniformly and circularly arranged on the inner wall of the cavity body, a sliding block is sleeved on the telescopic rod, the sliding block is located in the cavity body and is in sliding connection with the chutes, a stop block is arranged in the inner wall of the cavity body, a certain distance is reserved between the stop block and the sliding block, a spiral spring is connected between the stop block and the sliding block, the spiral spring is sleeved on the telescopic rod, and the telescopic rod is elastically connected with the loop bar through the spiral spring.

The beneficial effects obtained by the invention comprise:

1. through the first lug, the second lug, the first microswitch and the second microswitch, the signal feedback mechanism of the vacuum circuit breaker can monitor the opening and closing signals of the circuit breaker, has simple integral structure and is convenient to install and realize;

2. by arranging the third lug, the fourth lug, the third microswitch and the fourth microswitch, the reliability of the signal feedback mechanism of the vacuum circuit breaker on the on-off signal monitoring can be further improved, and the problems of electric arcs and contact burning caused by the fact that the vacuum circuit breaker cannot be switched on or off and cannot be fed back are better solved.

Drawings

The present invention will be further understood from the following description taken in conjunction with the accompanying drawings, the emphasis instead being placed upon illustrating the principles of the embodiments.

FIG. 1 is a schematic structural view of a linkage mechanism in an open position according to an embodiment of the present invention;

FIG. 2 is a schematic view of the linkage mechanism in a closed position according to one embodiment of the present invention;

fig. 3 is a schematic diagram of the overall structure of a signal feedback mechanism of a vacuum circuit breaker according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a loop bar according to one embodiment of the present invention;

FIG. 5 is a first schematic view illustrating a structural relationship between the retractable rod and the loop rod according to one embodiment of the present invention;

fig. 6 is a schematic structural relationship diagram two of the telescopic rod and the loop rod according to the first embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to embodiments thereof; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Other systems, methods, and/or features of the present embodiments will become apparent to those skilled in the art upon review of the following detailed description. It is intended that all such additional systems, methods, features and advantages be included within this description, be within the scope of the invention, and be protected by the accompanying claims. Additional features of the disclosed embodiments are described in, and will be apparent from, the detailed description that follows.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and are not to be construed as limiting the present patent, and the specific meaning of the terms described above will be understood by those of ordinary skill in the art according to the specific circumstances.

The invention discloses a signal feedback mechanism of a vacuum circuit breaker, which explains the following embodiments according to the attached drawings: