Pump motor shutdown idling hybrid control loop

A hybrid control and control circuit technology, applied in the direction of AC motor control, control system, AC motor reduction gear, etc., can solve the problems that do not involve the improvement method of the pump motor control circuit, etc.

Active Publication Date: 2017-03-08
JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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  • Abstract
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  • Claims
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Problems solved by technology

However, the measure of increasing the idling time in the above-mentioned patent is to improve the design method, but it does not involve the improvement method of the pump motor control circuit

Method used

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  • Pump motor shutdown idling hybrid control loop
  • Pump motor shutdown idling hybrid control loop

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Embodiment Construction

[0026]The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0027] The present invention is mainly based on the original pump motor control circuit, adding an idle hybrid electrical control circuit to control the motor stop time, prolonging the pump motor stop time, improving the stability of the pump operation, and the pump life and Maintenance time, to prevent damage to the pump and the entire circuit caused by the impact of water flow during pump shutdown.

[0028] This embodiment improves the pump motor control circuit on the basis of the given original pump motor:

[0029] First close the circuit breaker QF, then press the start button SB 2 , the main relay one KM 1 Coil energized, main relay one KM 1 The moving contact is self-locking, the main relay is one KM 1 The moving contact breaks the branch a 2 and branch a 3 , to achieve interlocking. Main relay-KM 1 The main contact is closed, and...

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Abstract

The invention belongs to the field of electric appliance control, and relates to a pump motor shutdown idling hybrid control loop. The electric appliance control loop is mainly composed of a pump motor, a main circuit, a control circuit and a speed relay. During a pump motor shutdown operation process, through controlling the rotation speed and the time of the pump, wiring of the main circuit and a resistor adding mode are adjusted, the purpose of prolonging the shutdown time is achieved, water flow impact caused due to water flow inertia is reduced, the pump loop operation stability is improved, and the purpose of prolonging the service life of the pump and the service life of a related part is achieved.

Description

technical field [0001] The invention belongs to the field of electric appliance control, and relates to an electric appliance control loop system, in particular to a hybrid control loop for idle running of pump motors. Background technique [0002] With the continuous development of industrial and agricultural production, vane pumps are more and more suitable for agricultural irrigation and drainage, municipal water supply and drainage, thermal power, nuclear power, petrochemical enterprises, etc. for circulating water supply, process water supply and regional water transfer and other fields. The pump operation circuit is mainly composed of the motor, the pump itself, pipelines, measuring devices, control valves, stability control devices and other components, and the idle time of the pump motor is an important parameter in the process of pump operation, which is directly related to the operation of the pump. Stability and operating life and safety. Therefore, the extended ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P3/22H02P25/16
CPCH02P3/22H02P25/16
Inventor 付强张本营朱荣生王秀礼钟华舟刘刚李梦圆
Owner JIANGSU UNIV ZHENJIANG RES INST OF FLUID ENG EQUIP TECH
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