SU128632A1 - Device for continuous, intrinsically safe, remote monitoring of the level of coal or other bulk conductive materials in bunkers - Google Patents

Description

Existing devices for continuous, spark; dangerous, remote monitoring of the level of bulk conductive materials in bunkers are not reliable enough and are insufficient.

The proposed device differs from the known devices by a higher reliability of operation. This is achieved by using a time delay relay with an adjustable time delay value.

Diagram of the device is given in the drawing.

When the voltage is switched on, the device immediately controls the level of coal in the bunker with a movable electrode made in the form of a thin steel wire wound on a drum insulated relative to the ground. When electro.d, lowered into the hopper, touches the coal, turn on / and closes its normally open contact 1a in the time delay circuit 2, and contact 16 opens. Relay 2 starts counting the time n after the set time delay expires, closes contact 2a in intermediate relay circuit 5. After switching on relay 5, its contact closes on, contact 56 opens and relay 2 turns off. The gateway 4, which serves to move the contact probe of the electrode, is activated to lift the electrode by contact Sv.

The rise of the electrode is made as long as the electrode touches the coal (. While the relay is on /). As soon as the electrode is cut off from the coal, the relay is turned off and its open contacts are closed. Contact 1b on.events time relay 2 and it starts counting the time, and contact 1c prepares the circuit to turn on intermediate relay 5. If coal is added to the bunker, then again / n after the relay / n is installed: my time delay electrode again begins to rise. If the level of the coal does not change, then after the separation of the electrode from the coal, it is held at,; 1 s; ; sh-1in shreds; time, and then lowered onto coal. After the fixed B1) elapses, the electrode rises again and tears away. € 6), and it takes place until the level of coal in the bunker changes. , .:

When the level is low |; 1 relay / does not turn out, contact 16 is closed on the next 1) a), the delayed time delay of relay 2 closes its contact 26 in the circuit of the intermediate relay 5, which, when turned on, closes contact 5a, resets Repeat the time with 2 contacts about and turn on the motor 4 to snatch the electrode of a copacto.m 5c. When the electrode contacts the coal, the relay / is turned on, the relay 5 is turned off, and the 5-relay 2 turns on and starts counting the time. After the expiration of the established 1, if the electrode has not moved away from the current, it rises and, having torn off the HHCb, is held for a certain time, and then, and lowered onto the coal. In the case of a more recent decrease in the level of the angle of the relay / is turned off and the engine 4 is switched on with a certain time delay, the motor 4 is switched on the descent of the electrode, so that the electrode electrode all the time SLS goes beyond the level.

G1 p e d eme and z about a b ete e i-r and

A device for continuous, ikrobezonasnogo, remote control of the level of coal or other bulk conductive materials in tanks, containing a roar of condensate motor for mixing the contact electrode in the bunker, reverse-relay of the engine, low-volt intermediate relay and rheostat Electrode position sensor, about t.ch and h and y1 e e so that, in order to increase the reliability of the device, it is used to re; actuation of the engine with an adjustable. Exposure rate 1;)