Intelligent comprehensive protection system for submersible electric pump

Abstract

The invention discloses an intelligent comprehensive protection system for a submersible electric pump. The system comprises a host 1, an analog sensor module 2 and a digital control input module 3, wherein the host 1 is connected with the analog sensor module 2 and the digital control input module 3 through signal lines. According to the system, people can be reminded before an accident occurs through early warning and warning setting by collecting parameters including the motor winding temperature, bearing temperature and motor cavity moisture of the submersible electric pump, oil cavity water intake, wire box water intake and motor water intake, so that crashing probability and accidents are effectively reduced and maintaining cost is reduced; early warning and warning are achieved, and a failure signal can be sent out; dehumidification and heating can be achieved, condensation of moisture inside a motor can be effectively prevented, and the service life of the motor is prolonged. The system is provided with a communication interface and can be in communication with an upper computer through a data port, data viewing, alarm event recollection and analysis, remote upgrading, optimal parameter setting and the like can be achieved, and the application range of the system is wide.

Description

technical field [0001] The invention relates to an intelligent protection device for a submersible electric pump, which can detect various operating parameters of the electric pump, perform fault diagnosis, safety monitoring and intelligent control. Background technique [0002] Submersible electric pumps are the core equipment of water treatment and engineering. Generally, they operate underwater for a long time, and the working conditions are complicated. They will face many challenges in the long-term operation. For example, water leakage, electricity leakage, maintenance inconvenience, etc., urgently need a protection system that can realize online safety monitoring. Before the system is damaged, it can effectively send out early warning information until the alarm and shutdown, instead of running without monitoring and protection until an accident shutdown occurs. . We constructed NS-4, a pure analog monitoring and protection system based on analog circuit measurement,...

AI Technical Summary

Problems solved by technology

However, in long-term use, some problems have also been exposed: the system lacks an effective early warning mechanism, it is difficult to adjust parameters according to the scene, it is impossible to recall and upgrade the alarm event, etc.

Moreover, the NS-4 type protector is matched with old-fashioned sub-components, and the technology is backward. When the sensor signal input fails or malfunctions, it cannot display and maintain fault records, fault time, historical records, etc. When the malfunction signal is automatically restored , the monitoring of the NS-4 protector will also return to normal, and it is impossible to intuitively see what signal is malfunctioning

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