RU178682U1 - LOCK AND LOCK DEVICE FOR DISCONNECTOR ACTIVATOR AND SWITCH LOCK - Google Patents

Abstract

The device for locking and fixing the drive of the disconnector and the locking of the switch belongs to the field of electrical engineering and is intended for use in switchgears to avoid erroneous operations during maintenance and repair. The technical result consists in providing the required switching sequence for the switching devices. This technical result is achieved due to the fact that the device for locking and fixing the drive of the disconnector and the circuit breaker contains a plate mounted on a spring-loaded plug connected on one side to the emergency shutdown button on the front panel of the distribution panel devices, and on the other hand, with a switch rod, a spring-loaded rod that can move with by the power of the handle on the front panel of the switchgear, and on which the stop is mounted, which interacts with the lock block rod located on the front panel of the switchgear, and the disconnector drive lever connected to the disconnector rod and provided with a groove for the plate, an opening for the spring-loaded rod and handle, facing the front panel of the switchgear.

Description

This utility model relates to the field of electrical engineering and is intended for use in switchgears to avoid erroneous operations during maintenance and repair.

A device is known for locking the disconnector when the switch is turned on and for locking the switch on when the disconnector is in the intermediate position in the chamber of the unilateral service team KSO-SESH-298 M (ZAO GK Elektroshchit-TM Samara, Operating Instructions KSO-SESH-298 M 0RT .412.241, http://archive.electroshield.ru/upload/iblock/re_412.241_kso298m_electroshield.ru.pdf). This lock contains a button for emergency shutdown of the circuit breaker, with which the force is transmitted through a flag that locks the traction of the lock to the circuit of the circuit breaker, a lock of the lock including a reed switch that commutes the control circuit of the circuit breaker, and a flag of the lock that closes the lock of the handle of the manual actuator of the disconnector. The disadvantages of this technical solution are the design complexity and a large number of operations performed by maintenance personnel when switching switching devices.

The problem to which the claimed utility model is directed is to simplify the design, improve manufacturability and safety of operation of the switchgear.

This problem is solved due to the fact that the device for locking and fixing the drive of the disconnector and the circuit breaker contains a plate mounted on a spring-loaded plug, connected on one side to the emergency shutdown button on the front panel of the switchgear, and on the other hand, to the switch rod, spring-loaded a rod that can be moved using the handle on the front panel of the switchgear and on which a stop is mounted, which interacts with the block-lock rod Placed on the front panel of the switchgear and the disconnector drive lever connected with a thrust isolator and equipped with a slot for the plate, a hole for the spring-loaded rod and the handle, leaving on the facade panel switchgear.

The technical result is to provide the required sequence of switching devices.

The essence of the utility model is illustrated by drawings, which depict:

In FIG. 1 - part of the front panel of the switchgear when the disconnector is on;

In FIG. 2 is a section AA in FIG. one;

In FIG. 3 is a section BB in FIG. one;

In FIG. 4 is a section bb in FIG. 2;

In FIG. 5 - part of the front panel of the switchgear with the disconnector disconnected;

In FIG. 6 is a section GG in FIG. 5;

In FIG. 7 is a section DD in FIG. 5;

In FIG. 8 is a section EE in FIG. 6.

The device for blocking and fixing the drive of the disconnector and the circuit-breaker lock contains a button 1 for emergency shutdown of the circuit breaker located on the front panel 2 of the switchgear connected to a spring-loaded plug 3 connected to the rod 4 of the circuit breaker. A plate 5 is fixed to the spring-loaded plug 3, which enters the groove 6 of the lever 7 of the actuator of the disconnector. The lever 7, which rotates around the axis 8, is connected to the rod 9 of the disconnector and is equipped with a handle 10 facing the front panel 2. The hole 11 in the lever 7 is designed for a spring-loaded rod 12, on which the stop 13 is fixed. The spring-loaded rod 12 has the possibility of horizontal movement with handles 14, facing the front panel 2. The rod 15 of the lock 16 located on the front panel 2, interacts with the stop 13.

The device for locking and fixing the drive of the disconnector and the lock of the switch operates as follows. When the switch is on, the drive of the disconnector is fixed in the on position using the plate 5, which is included in the groove 6 of the lever 7 of the drive of the disconnector (Fig. 2-4).

The disconnector can be disconnected after manually opening the circuit breaker by pressing the button 1. In this case, the force is transmitted through the spring-loaded plug 3 and the rod 4 to the circuit breaker shaft (not shown), the circuit breaker is turned off, and the plate 5 leaves the groove 6 and occupies the position shown in FIG. 8 - the disconnector drive is unlocked, operations with the disconnector are allowed. To disconnect the disconnector, hold the button 1 pressed and lower the handle 10 downward, while the lever 7 rotates around the axis 8 counterclockwise and in the disconnector position corresponding to the “Disconnected” position, it is fixed with the help of a spring-loaded rod 12 entering the hole 11 (Fig. . 6-7). When the disconnector is in the intermediate and disconnected position, the switch is turned on, as the button 1 remains pressed due to the plate 5 resting on the lever 7. Simultaneously with the movement of the spring-loaded rod 12, the rod 15 of the lock 16 extends inside the switchgear, preventing the movement of the stop 13 in the direction from the lever 7 (Fig. 7).

In the case of connecting the grounding of the busbars of the corresponding section, the block lock 16 with the help of the rod 15 blocks the disconnector from being turned on, preventing the stop 13 from moving together with the spring rod 12. Otherwise, the block lock 16 can be unlocked using a key that is common for the entire switchgear ( not shown), while the rod 15 is retracted into the lock 16, releasing the stop 13. After that, it is necessary to move the spring-loaded rod 12 with the stop 13 fixed on it using the handle 14 in the direction from the lever 7 of the drive p disconnector to release it, and then turn the lever 7 using the handle 10 clockwise. When the handle 10 reaches the highest position corresponding to the “On” position of the disconnector, the plate 5 enters the groove 6 of the lever 7, button 1 returns to its original position (Fig. 2) - the disconnector drive is locked, the switch is unlocked and ready to turn on.

The device for locking and securing the disconnector drive and the circuit breaker locks the disconnector drive in the “On” and “Disabled” positions, excludes operations with the disconnector when the switch is on, does not allow the circuit breaker to turn on when the disconnector is in the intermediate and disconnected position, blocks the disconnector on when the prefabricated grounding is on tires of the corresponding section.

Claims (1)

The device for locking and fixing the drive of the disconnector and the locking of the switch, characterized in that it contains a plate fixed on a spring-loaded plug connected on one side to the emergency shutdown button on the front panel of the switchgear, and on the other hand, to the switch rod, a spring-loaded rod, which has the ability to move with the handle on the front panel of the switchgear, and on which is fixed the stop interacting with the core of the block-lock on the front panel of the switchgear, and the switch actuator lever connected to the disconnector rod and provided with a groove for the plate, an opening for the spring-loaded rod and a handle facing the front panel of the switchgear.

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