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Pump controller, PLC platform and sea water desalting plant

A controller and pump control technology, applied in pump control, seawater treatment, general water supply saving, etc., can solve the problem of single function of pump controller, and achieve the effect of ensuring normal operation, reducing misoperation, and solving misoperation problems.

Active Publication Date: 2015-12-30
CHINA SHENHUA ENERGY CO LTD +2
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0017] The purpose of the present invention is to provide a pump controller, which is used to solve the problem that the pump controller currently applied to the PLC platform has a single function

Method used

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  • Pump controller, PLC platform and sea water desalting plant
  • Pump controller, PLC platform and sea water desalting plant
  • Pump controller, PLC platform and sea water desalting plant

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Embodiment Construction

[0040] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and not to limit the present invention.

[0041] At present, in the control system of the low-temperature multi-effect distillation seawater desalination unit, the PLC platform is equipped with a pump control function block. With reference to the background technology, the existing conventional pump control function block has a single function and is not really suitable for application scenarios of seawater desalination. Therefore, this embodiment provides a newly designed pump controller, which can be integrated on the PLC platform as a control function block to solve the problem of single function and low adaptability of the pump control function block on the existing PLC platform.

[0042] Such as Figure 5 As sh...

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Abstract

The invention relates to a pump controller, a PLC platform and a sea water desalting plant. The pump controller includes a start-stop control unit, a condition distinguishing unit, a fault judging unit, a monitoring unit and a device running time recording unit, wherein the start-stop control unit is used for achieving starting and stopping instruction blocking and setting the starting and stoping operations indicated by the starting and stoping instructions to be pulse instructions for automatic reset; the condition distinguishing unit is used for setting and distinguishing pump control operation conditions; the fault judging unit is used for judging whether a fault occurs during the start and stop processes; the monitoring unit is used for monitoring the pump operation state during the start and stop processes; the device running time recording unit is used for automatically recording the device running time and the last start and stop time. According to the invention, the maloperation problem caused by operation instruction blocking is completely solved, the operation conditions are distinguished and queried, faults are effectively judged, and the occurrence rate of maloperation is reduced; in addition, the pump running time and the last start and stop time are automatically recorded, and a basis is provided for the device management, repair and maintenance.

Description

Technical field [0001] The invention relates to the field of thermal control, in particular to a pump controller and a PLC platform and a seawater desalination device using the pump controller. Background technique [0002] At present, in the control system of the low-temperature multi-effect distilled seawater desalination device, the role of the pump is mainly to control the motor, which specifically includes three aspects, namely: 1. Monitoring the operation status of the equipment; 2. Starting and stopping the equipment according to the needs of the system operation; 3. Protect the equipment when the system or equipment is abnormal. Therefore, the control of the pump is the core technology to ensure the normal operation of the desalination plant. [0003] In the control system of the low-temperature multi-effect distillation seawater desalination device, the PLC platform is an important hardware configuration. The PLC platform can be configured with PID control function blocks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06F04B49/10C02F1/04C02F103/08
CPCY02A20/124
Inventor 李大鹏宋立新
Owner CHINA SHENHUA ENERGY CO LTD
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