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System, device and method for automatically optimizing and adjusting operating frequency of circulating water pump

A circulating water pump and operating frequency technology, applied to pump devices, pumps, pump control, etc., can solve problems such as difficult to accurately adjust the frequency of circulating water pumps

Inactive Publication Date: 2021-01-15
XIAN THERMAL POWER RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a system, device and method for automatically optimizing and adjusting the operating frequency of the circulating water pump; to solve the problem that it is difficult to accurately adjust the frequency of the circulating water pump in the existing frequency conversion system of the circulating water pump

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  • System, device and method for automatically optimizing and adjusting operating frequency of circulating water pump

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Embodiment Construction

[0047] The present invention is described in further detail below in conjunction with accompanying drawing:

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orientation. construction and operation, and therefore cannot be construed as limiting the present invention; the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be construed as indicating or implying relative importance; in addition, unless otherwise Clearly stipulated and limited, the terms "installation"...

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Abstract

The invention discloses a system, device and method for automatically optimizing and adjusting the operating frequency of a circulating water pump. The method comprises the steps that the load of a unit and the liquid level of a forebay are collected, the micro-increase output of the unit is determined through combining with the parameters of the unit, the target output flow of the circulating water pump is determined according to the micro-increase output of the unit, and the operation frequency of the circulating water pump is determined according to the target output flow of the circulatingwater pump and the liquid level of the forebay; and the circulating water pump is operated according to the operating frequency. During shutdown of the unit, the operation optimization algorithm is directly programmed and developed in a DCS of the unit by applying a related conclusion obtained by operation optimization of a turbine cold end system, so that the operation optimization function of the variable-frequency circulating water pump is realized, the operation optimization result is directly fed back to a frequency setting system of a circulating water pump frequency converter, and theoperation of the circulating water pump is intelligently controlled.

Description

【Technical field】 [0001] The invention belongs to the field of energy saving of coal-fired units, and relates to a system, device and method for automatically optimizing and adjusting the operating frequency of a circulating water pump. 【Background technique】 [0002] The circulating water pump is an important user of plant electricity, generally accounting for 0.8% of the plant's electricity consumption rate. The power consumption of the circulating water pump is directly related to the economy of the plant. If in order to maintain the low back pressure of the unit, it is necessary to increase the operating frequency of the circulating water pump motor, thereby increasing the circulating water flow, but the response will increase the power consumption of the circulating water pump; if in order to reduce the power consumption of the circulating pump, reduce the operating frequency of the circulating water pump, which may cause As a result, the back pressure of the unit incre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/06F04B49/00F04B23/02F04B23/04F28B9/04
CPCF04B49/065F04B49/007F04B23/025F04B23/04F28B9/04
Inventor 韩立荆涛贾明晓邹洋王明勇邓佳
Owner XIAN THERMAL POWER RES INST CO LTD
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