CN210897111U

CN210897111U - Three-station position interlocking device

Info

Publication number: CN210897111U
Application number: CN201922355853.8U
Authority: CN
Inventors: 黄强; 王广先; 赵瑞影
Original assignee: Chint Electric Co Ltd
Current assignee: Chint Electric Co Ltd
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-06-30
Anticipated expiration: 2029-12-20

Abstract

The utility model discloses a three-station position interlock, a serial communication port, including three-station mechanism, be equipped with the gear of connecting three-station mechanism indicating dial and three-station operating handle in three-station mechanism, be equipped with corresponding ground connection combined floodgate interlocking on the three-station mechanism indicating dial respectively, keep apart the spacing hole of combined floodgate interlocking and isolation separating brake interlocking, ground connection combined floodgate interlocking, keep apart combined floodgate interlocking and isolation separating brake interlocking be equipped with respectively with spacing hole assorted ground connection combined floodgate locking plate, keep apart separating brake locking plate. The utility model limits the motion of the indicating dial through the mechanical lock, thereby limiting the motion of the manual operating mechanism; the rotation routes of the isolation switch-on limiting hole, the isolation switch-off limiting hole and the grounding switch-on limiting hole on the indicating plate are not overlapped, so that the phenomenon of false locking is avoided; whether the three-station operation is in place or not can be checked through the limiting holes, the three-station position interlocking can be realized, the phenomenon of false locking cannot occur, and the safety of operators can be guaranteed.

Description

Three-station position interlocking device

Technical Field

The utility model relates to a three station position interlock belongs to switchgear technical field.

Background

When gas insulated switchgear equipment overhauls on-the-spot, need carry out manual reliable ground connection operation to three stations, there is spacing unreliable in mechanical operation in current three station mechanisms, three stations not reach assigned position (separate the separation and reunion, separate, ground connection closed position) and still can operate the circuit breaker scheduling problem, have because of maintainer is unfamiliar with the risk that leads to the maloperation to switchgear, perhaps the risk of other personnel maloperation three stations under the condition of unknown.

Disclosure of Invention

The to-be-solved technical problem of the utility model is: the method has the advantages that the positions of the three stations are interlocked, reliable limiting of three-station operation is achieved, and safety of operation and maintenance personnel is effectively guaranteed.

In order to solve the technical problem, the technical scheme of the utility model a three station position interlock is provided, a serial communication port, including three station mechanisms, be equipped with the gear of connecting three station mechanism indicating discs and three station operating handle in the three station mechanisms, be equipped with respectively on the three station mechanism indicating discs and correspond ground connection combined floodgate interlocking, keep apart the spacing hole of combined floodgate interlocking and isolation separating brake interlocking, ground connection combined floodgate interlocking, keep apart combined floodgate interlocking and keep apart separating brake interlocking be equipped with respectively with spacing hole assorted ground connection combined floodgate locking plate, keep apart separating brake locking plate.

Preferably, the grounding switch-on interlock comprises a travel switch, a guide rail, a mechanical lock, a push rod and a pressure spring; and a grounding switch-on locking plate is arranged in the sliding groove of the guide rail and is connected with the pressure spring through a push rod, a round hole capable of being connected with the mechanical lock is formed in the grounding switch-on locking plate, and the mechanical lock is connected with the travel switch.

Preferably, the isolation switching-on interlock comprises a travel switch, a guide rail, a mechanical lock, a push rod and a pressure spring; an isolation switch-on locking plate is arranged in a sliding groove of the guide rail and is connected with a pressure spring through a push rod, a round hole capable of being connected with a mechanical lock is arranged on the isolation switch-on locking plate, and the mechanical lock is connected with a travel switch.

Preferably, the isolation opening interlock comprises a travel switch, a guide rail, a mechanical lock, a push rod and a pressure spring; an isolation opening locking plate is arranged in the sliding groove of the guide rail and connected with the pressure spring through a push rod, a round hole capable of being connected with the mechanical lock is formed in the isolation opening locking plate, and the mechanical lock is connected with the travel switch.

Preferably, the grounding closing interlock, the isolating closing interlock and the isolating opening interlock are connected with the three-station mechanism indicating disc through limiting holes in the three-station mechanism indicating disc.

The utility model limits the motion of the indicating dial through the mechanical lock, thereby limiting the motion of the manual operating mechanism; the rotation routes of the isolation switch-on limiting hole, the isolation switch-off limiting hole and the grounding switch-on limiting hole on the indicating plate are not overlapped, so that the phenomenon of false locking is avoided; whether the three-station operation is in place or not can be checked through the limiting holes, the three-station position interlocking can be realized, the phenomenon of false locking cannot occur, and the safety of operators can be guaranteed.

Drawings

FIG. 1 is a schematic structural view of a three-position interlock;

FIG. 2 is a schematic view of an isolation opening interlock structure of a three-station position interlock device;

FIG. 3 is a schematic diagram of an isolation closing interlock structure of a three-station position interlock device;

fig. 4 is a schematic diagram of a grounding and closing interlocking structure of a three-position interlocking device.

Detailed Description

In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 4, a three-position interlocking method and a structure thereof are characterized in that: the three-station mechanism comprises a three-station mechanism 1, a three-station mechanism indicating disc 2, a three-station operating handle 3, an isolation opening locking plate 4, a grounding closing locking plate 5, an isolation closing locking plate 6, a pressure spring 7, a push rod 8, a mechanical lock 9, a guide rail 10 and a travel switch 11. Three-station position interlocking method and structure thereof are characterized in that: three station mechanism indicating dial 2 and 3 gear linkages of manual operation handle set up spacing holes according to three station operation stroke and rotation angle in the indicating dial corresponding position, pin spacing hole and realize that manual operation is locked, three station devices include three operating position: grounding switch-on, isolation switch-off and isolation switch-on.

And (3) grounding, closing and interlocking: three station handles 3 of anticlockwise rotation drive three station indicator board 2 anticlockwise ground connection switching-on position and rotate, when spacing hole of ground connection overlaps with ground connection switching-on locking plate 5 on three station indicator boards, promote during push rod 8 pushes ground connection switching-on locking plate 5 into the hole, rotatory mechanical lock 9 pins locking plate 5 simultaneously, and travel switch 11 that is in normally closed state is released simultaneously, three station electric circuit disconnection. If the grounding opening operation is needed, the mechanical lock 9 needs to be opened, the normally open travel switch 11 is closed, and the three-station electric loop is recovered; the grounding switch-on locking plate 5 is automatically ejected under the action of the pressure spring 7, and the interlocking fails;

isolation and opening interlocking: the three-station handle 3 is rotated to drive the three-station indicating plate 2 to rotate towards the isolation brake-separating position, when the isolation brake-separating limiting hole on the three-station indicating plate is overlapped with the isolation brake-separating locking plate 4, the push rod 8 is pushed to push the isolation brake-separating locking plate 4 into the hole, meanwhile, the mechanical lock 9 is rotated to lock the locking plate 4, meanwhile, the travel switch 11 in the normally closed state is released, and the three-station electric loop is disconnected. If grounding switching-on or isolation switching-on operation is required, the mechanical lock 9 is required to be opened, the normally open travel switch 11 is closed, and the three-station electric loop is recovered; the isolation opening lock plate 4 is automatically ejected out under the action of the pressure spring 7, and the interlocking fails;

isolation, closing and interlocking: clockwise rotation three-station handle 3 drives three-station indicator board 2 and rotates to keeping apart the switching-on position clockwise, when keeping apart the spacing hole of switching-on and keeping apart switching-on locking plate 6 and overlapping on three-station indicator board, promotes during push rod 8 will keep apart switching-on locking plate 6 and push away the hole, and rotatory mechanical lock 9 pins locking plate 6 simultaneously, and travel switch 11 that is in normally closed state is released simultaneously, and three-station electric circuit breaks off. If the isolation opening operation is needed, the mechanical lock 9 needs to be opened, the normally open travel switch 11 is closed, and the three-station electric loop is recovered; the grounding switch-on locking plate 6 is automatically ejected out under the action of the pressure spring 7, and the interlocking fails.

Claims

1. The utility model provides a three-station position interlock, a serial communication port, including three-station mechanism (1), be equipped with the gear of connecting three-station mechanism indicator panel (2) and three-station operating handle (3) on three-station mechanism (1), be equipped with respectively on three-station mechanism indicator panel (2) and correspond ground connection combined floodgate interlocking, keep apart the spacing hole of combined floodgate interlocking and isolation separating brake interlocking, ground connection combined floodgate interlocking, keep apart combined floodgate interlocking and isolation separating brake interlocking be equipped with respectively with spacing hole assorted ground connection combined floodgate locking plate (5), keep apart combined floodgate locking plate (6), keep apart separating brake locking plate (4).

2. A three-position interlock as claimed in claim 1 wherein the earth-engaging closing interlock comprises a travel switch (11), a guide (10), a mechanical lock (9), a push rod (8) and a compression spring (7); a grounding switch-on locking plate (5) is arranged in a sliding groove of the guide rail (10), the grounding switch-on locking plate (5) is connected with a pressure spring (7) through a push rod (8), a round hole capable of being connected with a mechanical lock (9) is formed in the grounding switch-on locking plate (5), and the mechanical lock (9) is connected with a travel switch (11).

3. A three position interlock as claimed in claim 1 wherein the isolation switch on interlock comprises a travel switch (11), a guide (10), a mechanical lock (9), a push rod (8) and a compression spring (7); an isolation switch-on locking plate (6) is arranged in a sliding groove of the guide rail (10), the isolation switch-on locking plate (6) is connected with a pressure spring (7) through a push rod (8), a round hole capable of being connected with a mechanical lock (9) is formed in the isolation switch-on locking plate (6), and the mechanical lock (9) is connected with a travel switch (11).

4. A three position interlock as claimed in claim 1 wherein the isolating opening interlock comprises a travel switch (11), a guide (10), a mechanical lock (9), a push rod (8) and a compression spring (7); an isolation opening locking piece (4) is arranged in a sliding groove of the guide rail (10), the isolation opening locking piece (4) is connected with a pressure spring (7) through a push rod (8), a round hole capable of being connected with a mechanical lock (9) is formed in the isolation opening locking piece (4), and the mechanical lock (9) is connected with a travel switch (11).

5. The three-position interlocking device according to claim 1, wherein the grounding closing interlocking, the isolating closing interlocking and the isolating opening interlocking are connected with the three-position mechanism indicating disc (2) through limiting holes in the three-position mechanism indicating disc (2).