CN211980493U - Isolator operating axis interlock - Google Patents

Abstract

The utility model discloses an isolator operating axis interlock belongs to power equipment interlock technical field. The circuit breaker comprises a first program lock, a second program lock, an isolating switch operating shaft, a limiting shaft sleeve and an operating handle, wherein the first program lock is installed on a switch cabinet body of an upper circuit breaker, and the second program lock is installed on the isolating switch cabinet body; one end of the isolating switch operating shaft is fixedly inserted into an isolating switch arranged in the isolating switch cabinet, the other end of the isolating switch operating shaft penetrates through the isolating switch cabinet body and is inserted into the operating handle, and the limiting shaft sleeve is fixedly sleeved on the isolating switch operating shaft. Through set up first procedure lock on the last circuit breaker switch cabinet body, set up second procedure lock on the isolator switch cabinet body, interlock is with two procedure locks interlocking, and interlock can guarantee that isolator can operate, and circuit breaker switch's separating brake keeps breaking away on it, avoids arousing electrical safety accident.

Description

Isolator operating axis interlock

Technical Field

The utility model relates to an isolator operating axis interlock belongs to power equipment interlock technical field.

Background

An isolation switch installed in an isolation switch cabinet is a common electrical element, and generally plays a role in breaking and connecting a power supply. However, the disconnector cannot be operated under load when disconnecting and connecting the power supply, which would otherwise cause electrical accidents. Therefore, when the disconnecting switch is operated, the circuit breaker switch at the upper stage of the disconnecting switch is opened, and the system can be operated under the condition of no load.

Disclosure of Invention

The utility model discloses the technical problem that will solve lies in: the utility model provides an isolator operating axis interlock, it has solved among the prior art because the maloperation leads to the circuit breaker to divide and shut isolator under the combined floodgate state, probably brings the problem of incident.

The utility model discloses the technical problem that will solve takes following technical scheme to realize:

an isolation switch operating shaft interlocking device comprises a first program lock, a second program lock, an isolation switch operating shaft, a limiting shaft sleeve and an operating handle, wherein the first program lock is installed on a switch cabinet body of an upper circuit breaker, and the second program lock is installed on the isolation switch cabinet body;

one end of the isolating switch operating shaft is fixedly inserted into an isolating switch arranged in the isolating switch cabinet, the other end of the isolating switch operating shaft penetrates through the isolating switch cabinet body and is inserted into the operating handle, and the limiting shaft sleeve is fixedly sleeved on the isolating switch operating shaft;

the first program lock and the second program lock are composed of a lock body, a lock rod and a key, the first program lock and the second program lock share one key, and the lock rod of the second program lock extends out of the lock body and is inserted into the limiting shaft sleeve.

As a preferred example, the disconnecting switch operating shaft is a hexagonal shaft.

The utility model has the advantages that: through set up first procedure lock on the last circuit breaker switch cabinet body, set up second procedure lock on the isolator switch cabinet body, interlock is with two procedure locks interlocking, and interlock can guarantee that isolator can operate, and circuit breaker switch's separating brake keeps breaking away on it, avoids arousing electrical safety accident.

Drawings

Fig. 1 is a schematic view of the internal structure of the isolation switch cabinet of the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: the isolating switch comprises an isolating switch 1, a mounting plate 2, an isolating switch operating shaft 3, an isolating switch cabinet body 4, a limiting shaft sleeve 5, an operating handle 6, a second program lock 7, a lock body 71, a lock rod 72 and a key 73.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.

As shown in fig. 1-2, an isolator operating shaft interlocking device comprises a first program lock, a second program lock 7, an isolator operating shaft 3, a limiting shaft sleeve 5 and an operating handle 6, wherein the first program lock is installed on an upper circuit breaker switch cabinet body, and the second program lock 7 is installed on an isolator cabinet body 4;

one end of an isolating switch operating shaft 3 is fixedly inserted into an isolating switch 1 arranged in an isolating switch cabinet, the other end of the isolating switch operating shaft passes through an isolating switch cabinet body 4 and is inserted into an operating handle 6, and a limiting shaft sleeve 5 is fixedly sleeved on the isolating switch operating shaft 3;

the first program lock and the second program lock 7 are both composed of a lock body 71, a lock rod 72 and a key 73, the first program lock and the second program lock 7 share the key 73, and the lock rod 72 of the second program lock 7 extends out of the lock body 71 and is inserted into the limit shaft sleeve 5.

The disconnecting switch operating shaft 3 is a hexagonal shaft.

The working principle is as follows:

isolator 1 installs on mounting panel 2, and isolator operating axis 3 installs between isolator 1 and the isolator cabinet body 4, plays the transmission effect. The second program lock 7 is installed on the isolation switch cabinet body 4. Under the normal working state, the isolating switch 1 is in the closing state, the upper-stage circuit breaker switch is already closed, and the electrical system is in the communicating state. If it is desired to operate the disconnector 1 in the open state, it must be ensured that its upper circuit breaker switch has been opened before operating the disconnector 1, in view of the fact that the disconnector 1 does not allow a loaded operation, which would otherwise cause an electrical accident.

In a normal working state, the lock rod 72 on the second program lock 7 is inserted into the limit shaft sleeve 5, the limit shaft sleeve 5 is arranged on the disconnecting switch operating shaft 3, and when the operating handle 6 acts on the disconnecting switch operating shaft 3, the operating shaft cannot rotate, so that the disconnecting switch 1 cannot be operated.

When the upper-level breaker switch is in an opening and breaking state, the key 73 of the second program lock 7 can be taken down, and the upper-level breaker switch cabinet is provided with the first program lock and shares the key 73 with the second program lock 7 arranged on the isolation switch cabinet. When the superior breaker is in an off state, the key 73 can be taken down, the key 73 of the second program lock 7 is rotated to enable the lock rod 72 of the second program lock 7 to be separated from the limiting shaft sleeve 5, at the moment, the key 73 cannot be taken down, the superior breaker cannot be switched on and switched on, at the moment, when the operating handle 6 acts on the disconnecting switch operating shaft 3, the operating shaft can be rotated, the disconnecting switch 1 is changed into a switching-off state from a switching-on state under the action of the operating shaft, and the electric system is in the off state.

Similarly, under the switching-off state of the isolating switch 1, the operating handle 6 is rotated reversely to act on the isolating switch operating shaft 3, so that the isolating switch 1 is changed from the switching-off state to the switching-on state. The key 73 is now turned so that the lock lever 72 is inserted into the restraining sleeve 5, at which point the key 73 can be removed. The key 73 can then be used to operate the upper level breaker switch to close the switch and the electrical system is connected.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that various changes and modifications may be made without departing from the spirit and scope of the invention, and such changes and modifications are intended to be included within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (2)

1. An isolation switch operating shaft interlocking device is characterized by comprising a first program lock, a second program lock, an isolation switch operating shaft, a limiting shaft sleeve and an operating handle, wherein the first program lock is installed on a switch cabinet body of an upper circuit breaker, and the second program lock is installed on the isolation switch cabinet body;

one end of the isolating switch operating shaft is fixedly inserted into an isolating switch arranged in the isolating switch cabinet, the other end of the isolating switch operating shaft penetrates through the isolating switch cabinet body and is inserted into the operating handle, and the limiting shaft sleeve is fixedly sleeved on the isolating switch operating shaft;

the first program lock and the second program lock are composed of a lock body, a lock rod and a key, the first program lock and the second program lock share one key, and the lock rod of the second program lock extends out of the lock body and is inserted into the limiting shaft sleeve.

2. The isolator operating shaft interlock of claim 1, wherein said isolator operating shaft is a hexagonal shaft.

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