Method for calibrating performance curve of single water pump in urban water plant pump station

Abstract

The invention provides a method for calibrating the performance curve of a single water pump in an urban water plant pump station. The urban water plant pump station comprises multiple pumps in parallel connection, and the method includes: (1), monitoring data collecting: obtaining historical data of operating state of the pump station through monitoring instruments mounted at an inlet and an outlet of the pump station; (2), monitoring data processing: utilizing the historical data of the operating state of the pump station measured in the step (1) to obtain total flow, total pumping head and electricity consumption of the pump station and operating state of the single water pump so as to generating processing data; (3), monitoring data analyzing: adopting the regional sensitivity analysis method to the data generated in the step (2), and calculating performance curve parameters of the single water pump in the pump station according to a given pump station performance curve equation; and (4), applying parameters: subjecting the performance curve parameters of the single water pump obtained in the step (3) to simulating application to obtain the performance curve, energy consumption evaluation and improvement scheme of the single water pump and optimized scheduling of the pump station.

Description

technical field [0001] The invention relates to the field of parameter estimation of water supply pipe network equipment, in particular to a method for calibrating the performance curve of a single water pump in an urban water plant pumping station. Background technique [0002] A pump is a machine that transports or pressurizes a liquid. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. The pump is mainly used to transport liquids such as water, oil, acid and alkali liquid, emulsion, suspoemulsion and liquid metal, and can also transport liquid, gas mixture and liquid containing suspended solids. Pumps can usually be divided into three categories according to their working principles: positive displacement pumps, dynamic pumps and other types of pumps. In addition to classification by working principle, it can also be classified and named by other methods. For example, according to the drivi...

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Problems solved by technology

[0008] 1) Due to the limitation of actual conditions, the experimental measurement requires independent experiments on the water pump, and it is necessary to ensure that there is a certain length of straight pipe between the test point and the water pump. However, due to the compact layout of the pump room and the limitation of instrument installation, it is not suitable to use the traditional method ;

[0009] 2) The safety of water supply is difficult to guarantee. To obtain the actual head flow curve of each pump, each pump needs to be isolated. It is difficult to run the water pump independently for experimental measurement;

[0010] 3) The accuracy is low, the layout of the pump room is compact, and the installation of the instrument is limited by the conditions. There are many factors affecting the measurement accuracy of a single water pump, and it is difficult to promote it on a large scale.

[0011] At present, a large number of monitoring instruments have been installed at the inlet and outlet of the pumping station of the water plant, and professional staff are equipped to inspect and record, and a large number of pumping station operation and production data have been accumulated. However, new methods for effectively using these data to reverse the pump characteristic curve parameters are very rare.

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