Rheostat structure based on electrohydraulic rheostat starter

Abstract

The invention discloses a rheostat structure based on an electro-hydraulic starter rheostat. The rheostat structure comprises a water tank, three pairs of electrode bars inserted into the water tank and an electrode bar lifting structure capable of changing water resistance. A standby water tank, locating columns, a float, a magnetic material arranged on the float and a reed pipe are further included, the standby water tank is arranged adjacent to the water tank, the water tank and the adjacent water tank are separated only through a common plate, a water pump is arranged in the standby water tank, and the water pump can inject water of the standby water tank into the water tank through an inlet in the upper portion of the water tank. The locating columns are fixed in the water tank. The locating columns are sleeved with the float, and the float can vertically move along the water level. The reed pipe is arranged in a sealing pipe of the non-magnetic-conducting material. When the water level of the water tank is reduced, the reed pipe is triggered by the magnetic material to be closed, and the water pump works. A water tank cover is provided with holes allowing the electrode bars to be inserted, sealing rings and housings fixing the sealing rings on the inner face of the water tank cover, and the electrode bars are sleeved with the sealing rings. The rheostat structure has the advantages of reducing the temperature of the water tank, automatically adding water, preventing water losses, and prolonging the maintenance period.

Description

technical field [0001] The invention relates to a rheostat structure based on an electro-hydraulic rheostat starter, which belongs to the field of motor soft starting. Background technique [0002] The electro-hydraulic rheostat starter is used to start the motor. We know that when the motor starts, the starting current is very large. At this time, the efficiency of the large current is very low. Therefore, the waste of electric energy is very large. In order to solve this technical problem, a common solution One is to connect rheostats in series to limit the current, gradually increase the speed of the motor through the rheostats, and finally achieve the goal of energy saving. variable resistance. In the prior art, the water in the water tank is easy to heat up and evaporate, and as the water level drops, it needs to be continuously replenished with water. Contents of the invention [0003] Based on the above deficiencies, the present invention provides a rheostat struc...

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Problems solved by technology

[0002] The electro-hydraulic rheostat starter is used to start the motor. We know that when the motor starts, the starting current is very large. At this time, the efficiency of the large current is very low. Therefore, the waste of electric energy is very large. In order to solve this technical problem, a common solution One is to connect rheostats in series to limit the current, gradually increase the speed of the motor through the rheostats, and finally achieve the goal of saving energy. variable resistance

In the existing technology, the water in the water tank is easy to heat up and evaporate, and as the water level drops, it needs to be replenished continuously

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