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

A technology of water pump performance and pumping station, which is applied in the field of parameter estimation of water supply pipe network equipment, can solve the problems that traditional methods are not suitable, there are many factors affecting the measurement accuracy, and it is difficult to guarantee the safety of water supply, so as to avoid experimental measurement calibration and save Field test work, the effect of narrowing the range of values

Active Publication Date: 2013-04-24
北京清控人居环境研究院有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 l

Method used

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

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Embodiment 1)

[0140]A city’s smart water project applied the method of the present invention to accurately obtain the characteristic curves of 11 water pumps (including 8 power frequency pumps and 3 variable frequency pumps), and identified low-efficiency water pumps through this method and replaced them. .

[0141] The city's water affairs system includes two water plants with a total of 11 pumps that are frequently used. Among them, one water plant has 1 variable frequency pump (XW6), 5 power frequency pumps (XW2, XW4, XW8, XW9, XW10), and the 6 pumps There are a total of 11 combinations of pump operation, that is, the operation of 1 to 5 power frequency pumps, the operation of 1 to 5 power frequency pumps and 1 variable frequency pump, and the operation of only 1 variable frequency pump. There are 11 types in total.

[0142] The combined state of the pump is represented by numbers, the value is 0 when the power frequency pump is off, and the value is 1 when it is on; the value is 0 when...

Embodiment 2)

[0156] The steps of evaluating the flow error and evaluating the head error in the calibration method of the present invention will be introduced below.

[0157] Figure 5 It is a schematic diagram of the basic steps of evaluating flow error and head error in the present invention.

[0158] Depend on Figure 5 It can be seen that the basic steps of evaluating the flow error and evaluating the head error of the present invention are the same, and the difference is that in evaluating the flow error, the designated head of the working condition record is used to calculate the flow error to evaluate the parameters; and in evaluating the head In the error, the head error is calculated by using the specified flow rate recorded by the working condition to evaluate the parameter. Therefore, refer to the following Figure 5 , only the step of evaluating the flow error in the present invention is introduced.

[0159] Such as Figure 5 As shown, the steps of evaluating the flow erro...

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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...

Claims

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Application Information

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IPC IPC(8): F04D15/00
Inventor 徐鹏徐速
Owner 北京清控人居环境研究院有限公司
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