CN219457438U

CN219457438U - Mechanical interlocking system for GIS

Info

Publication number: CN219457438U
Application number: CN202320561327.0U
Authority: CN
Inventors: 刘振; 侯磊; 王彪; 杨海东; 翟昌磊
Original assignee: Shandong Taikai High Volt Switchgear Co Ltd
Current assignee: Shandong Taikai High Volt Switchgear Co Ltd
Priority date: 2023-03-21
Filing date: 2023-03-21
Publication date: 2023-08-01
Anticipated expiration: 2033-03-21

Abstract

The utility model relates to the technical field of high-voltage switches, in particular to a mechanical interlocking system for a GIS, which comprises a key exchange box, and a disconnecting switch mechanical lock and a grounding switch mechanical lock which are fixedly arranged on a GIS disconnecting switch and a grounding switch mechanism, wherein a first key and a second key which can be mutually unlocked are arranged in the key exchange box, disconnecting switch mechanical lock cores and jacks into which the grounding switch mechanical lock cores can be inserted are respectively arranged on an output shaft of the disconnecting switch and an output shaft of the grounding switch mechanism, the disconnecting switch mechanical lock is unlocked by the first key and can be locked on the disconnecting switch mechanical lock, and the grounding switch mechanical lock is unlocked by the second key and can be locked on the grounding switch mechanical lock. When the switch is used, the isolating switch cannot be operated when the earthing switch is operated, and the earthing switch cannot be operated when the isolating switch is operated, so that not only is the staff better protected, but also the switch is simple to operate and good in visibility, and the state of each switch can be clearly seen when misoperation is avoided.

Description

Mechanical interlocking system for GIS

Technical Field

The utility model belongs to the technical field of high-voltage switches, and particularly relates to a mechanical interlocking system for a GIS.

Background

The interlocking of GIS equipment is an important measure for ensuring the safe operation of a power grid, ensuring the safety of equipment and personnel and preventing misoperation. Generally, the interlocking is classified into mechanical interlocking and electrical interlocking. The design of the utility model is based on mechanical and electrical dual guarantee, and a mechanical interlocking scheme is designed, and the mechanical interlocking scheme is perfectly combined with the electrical interlocking, so that the safety coefficient of equipment and personnel is greatly improved.

In the current popular GIS control systems, most of the GIS control systems adopt an electrical interlocking scheme, and the risk and hidden trouble of misoperation of maintenance personnel still exist due to the characteristics of complexity, poor visibility and the like of an electrical interlocking loop.

Disclosure of Invention

The utility model provides a mechanical interlocking system for GIS, which is used for solving the defects in the prior art.

The utility model is realized by the following technical scheme:

the utility model provides a mechanical interlocking system for GIS, including key exchange box, fixed isolator mechanical lock and the earthing switch mechanical lock that sets up on GIS isolator and earthing switch mechanism, be equipped with first key and the second key that can unlock each other in the key exchange box, isolator output shaft, earthing switch mechanism output shaft are last to have seted up isolator mechanical lock core, earthing switch mechanical lock core male jack respectively, isolator mechanical lock is through first key unblock and first key can lock on isolator mechanical lock, earthing switch mechanical lock is through second key unblock and second key can lock on earthing switch mechanical lock.

When the isolating switch normally operates, the isolating switch is in a closing state, the lock core of the mechanical lock is in a retraction state, the first key is locked on the mechanical lock of the isolating switch, the grounding switch is in a separating state, the lock core of the mechanical lock is in an extending state, and the second key is locked on the key exchange box; when overhauling, the circuit breaker is firstly opened, then the isolating switch is opened, the first key is rotated on the mechanical lock of the isolating switch, so that the lock core of the mechanical lock of the isolating switch is inserted into the jack of the output shaft of the isolating switch, the output shaft of the isolating switch mechanism is locked, misoperation of the isolating switch is prevented, the first key is released, the key exchange box is inserted, the second key is released, the second key is inserted into the mechanical lock of the grounding switch and rotated, the output shaft of the grounding switch mechanism is released, the closing action of the grounding switch is completed, and meanwhile, the second key is locked on the mechanical lock. When the power transmission is completed in overhauling, the switch-off grounding switch is turned, the second key is rotated to enable the lock cylinder of the mechanical lock of the grounding switch to be inserted into the jack in the output shaft of the grounding switch mechanism to lock the output shaft of the grounding switch mechanism, meanwhile, the second key is released, the second key is inserted into the key exchange box and rotates in the opposite direction, at the moment, the first key can be turned and released, and the second key is locked on the key exchange box. And inserting the first key into the mechanical lock of the isolating switch, rotating and releasing the output shaft of the isolating switch mechanism, completing the closing operation of the isolating switch, subsequently completing the closing operation of the circuit breaker, and completing the power transmission.

Preferably, the mechanical lock of the isolating switch and the mechanical lock of the grounding switch are fixed on the isolating switch and the grounding switch mechanism through fixing plates.

Preferably, the second key is provided with a plurality of key holes which are inserted in the corresponding key exchange boxes.

The beneficial effects of the utility model are as follows: when the switch is used, the isolating switch cannot be operated when the earthing switch is operated, and the earthing switch cannot be operated when the isolating switch is operated, so that not only is the staff better protected, but also the switch is simple to operate and good in visibility, and the state of each switch can be clearly seen when misoperation is avoided.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a mechanical lock locking mechanism for a disconnector;

FIG. 2 is a schematic illustration of a mechanical lock locking mechanism for a grounding switch;

fig. 3 is a schematic diagram of a key exchange case.

The figure shows:

1. the mechanical lock of the isolating switch, 2, the mechanical lock of the grounding switch, 3, the first key, 4, the key exchange box, 5, the second key, 6, the fixed plate, 7, the output shaft of the isolating switch, 8, the output shaft of the grounding switch mechanism, 9, the grounding switch mechanism, 10, jack.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

A mechanical interlocking system for GIS is shown in fig. 1-3. The key exchange box comprises a key exchange box 4, a disconnecting switch mechanical lock 1 and a grounding switch mechanical lock 2, wherein the disconnecting switch mechanical lock 1 and the grounding switch mechanical lock 2 can be fixedly arranged on a GIS disconnecting switch mechanism or a grounding switch mechanism 9 through a fixing plate 6, a first key 3 and a second key 5 which can be mutually unlocked are arranged in the key exchange box 4, and the second key 5 is provided with a plurality of key holes which are all inserted in the key exchange box 4. The isolating switch output shaft 7 and the grounding switch mechanism output shaft 8 are respectively provided with a plug 10 into which the plug of the isolating switch mechanical lock 1 and the plug of the grounding switch mechanical lock 2 can be inserted, the isolating switch mechanical lock 1 is unlocked by the first key 3, the first key 3 can be locked on the isolating switch mechanical lock 1, the grounding switch mechanical lock 2 is unlocked by the second key 5, and the second key 5 can be locked on the grounding switch mechanical lock 2.

During normal operation, the isolating switch is in a closing state, the lock cylinder of the mechanical lock 2 is in a retracted state, the first key 3 is locked on the mechanical lock 1 of the isolating switch, the grounding switch is in a separating state, the lock cylinder of the mechanical lock 1 is in an extending state, and the second key 5 is locked on the key exchange box 4; when the circuit breaker is overhauled, the circuit breaker is firstly opened, then the isolating switch is opened, the first key 3 is rotated on the mechanical lock of the isolating switch, so that the lock cylinder of the mechanical lock 1 of the isolating switch is inserted into the jack 10 of the output shaft 7 of the isolating switch, the output shaft of the isolating switch mechanism is locked, the isolating switch is prevented from misoperation, the first key 3 is released, the key exchange box 4 is inserted, the second key 5 is released, the second key 5 is inserted into the mechanical lock 2 of the grounding switch and rotated, the output shaft 8 of the grounding switch mechanism is released, the closing action of the grounding switch is completed, and meanwhile, the second key 5 is locked on the mechanical lock. When the overhaul is completed and the power transmission is completed, the switch-off grounding switch is turned, the second key 5 is turned to enable the lock cylinder of the grounding switch mechanical lock 2 to be inserted into the insertion hole 10 in the grounding switch mechanism output shaft 8 to lock the grounding switch mechanism output shaft 8, meanwhile, the second key 5 is released, the second key 5 is inserted into the key exchange box 4 and turned in the opposite direction, at the moment, the first key 3 can be turned and released, and the second key 5 is locked on the key exchange box 4. The first key 3 is inserted into the mechanical lock 1 of the isolating switch, the output shaft 7 of the isolating switch mechanism is released in a rotating mode, the closing operation of the isolating switch is completed, the closing operation of the circuit breaker is completed subsequently, and power transmission is completed.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A mechanical interlocking system for a GIS, characterized in that: the device comprises a key exchange box, a disconnecting switch mechanical lock and a grounding switch mechanical lock, wherein the disconnecting switch mechanical lock and the grounding switch mechanical lock are fixedly arranged on a GIS disconnecting switch and a grounding switch mechanism, a first key and a second key which can be mutually unlocked are arranged in the key exchange box, a disconnecting switch mechanical lock cylinder and a jack which can be inserted by the grounding switch mechanical lock cylinder are respectively arranged on an output shaft of the disconnecting switch and an output shaft of the grounding switch mechanism, the disconnecting switch mechanical lock is unlocked by the first key and can be locked on the disconnecting switch mechanical lock, and the grounding switch mechanical lock is unlocked by the second key and can be locked on the grounding switch mechanical lock.

2. The mechanical interlocking system for GIS according to claim 1, wherein: the isolating switch mechanical lock and the grounding switch mechanical lock are fixed on the isolating switch and the grounding switch mechanism through fixing plates.

3. The mechanical interlocking system for GIS according to claim 1, wherein: the second keys are provided with a plurality of key holes which are inserted in the corresponding key exchange boxes.