Optimum adjustment method of circulating pump in heat power station

Abstract

The invention discloses a thermal station circulating pump optimization adjustment method. The thermal station circulating pump optimization adjustment method comprises the following steps that operation parameters of a pipeline on the user side are collected; the return water temperature of all units are adjusted to be consistent; a circulating pump operation characteristic curve and an operationcharacteristic curve of each frequency point of circulating pump frequency conversion are drawn according to the flow lift of each pump operating point of a circulating pump; the circulating pump characteristic curve is compared with the actual operation characteristic curve, according to the operation characteristic curve of each frequency point, a frequency interval of the circulating pump running in a high efficiency zone is obtained; and according to the frequency interval of the high efficiency zone of the circulating pump, the maximum frequency and minimum frequency of the circulating pump operation are set, the circulating pump is adjusted in the interval, and the circulating pump operates at a frequency which ensures the minimum differential pressure at the tail ends of double networks. The thermal station circulating pump optimization adjustment method can actually measure the operation characteristic curve of each frequency point under the frequency conversion control according to the operation characteristic curve of the circulating pump, and finds out the optimal working point of the circulating pump combined with a pipe network characteristic curve, so that power consumption is reduced and energy conservation and emission reduction are achieved under the premise of ensuring the heating quality.

Description

technical field [0001] The invention relates to the technical field of heat supply regulation of a thermal station, in particular to a method for optimizing and adjusting a circulation pump of a thermal station. Background technique [0002] Centralized heating with coal as the main fuel is the main form of heating in winter in northern my country. While consuming energy, it also aggravates environmental pollution. Therefore, energy saving and emission reduction in the heating industry have good social and economic benefits. [0003] At present, the circulation pump of the heat exchange station generally adopts fixed frequency control, but whether the operating point of the circulation pump is economical and reasonable is not supported by data and scientific demonstration. Some circulating pumps are selected too large, and the frequency needs to be adjusted by frequency conversion, but in fact, if the frequency is too low, the pump cannot run in the high-efficiency zone, and...

AI Technical Summary

Problems solved by technology

Some circulating pumps are selected too large, and the frequency needs to be adjusted by frequency conversion, but in fact, if the frequency is too low, the pump cannot run in the high-efficiency area, and the energy-saving effect is very limited.

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