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Method for determining blade adjustment frequency of variable-angle optimized operation of large fully-adjustable water pump station

A technology for blade adjustment and optimized operation, which is applied in pump control, non-variable pumps, machines/engines, etc., and can solve problems such as the frequency of blade adjustment that has not been reported.

Inactive Publication Date: 2014-05-21
YANGZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing research focuses on the solution method of the pump station operation optimization model, but there is no report on the appropriate blade adjustment frequency of the blade adjustable unit

Method used

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  • Method for determining blade adjustment frequency of variable-angle optimized operation of large fully-adjustable water pump station
  • Method for determining blade adjustment frequency of variable-angle optimized operation of large fully-adjustable water pump station
  • Method for determining blade adjustment frequency of variable-angle optimized operation of large fully-adjustable water pump station

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Embodiment Construction

[0033] Adopting the technical scheme of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and cases, but this case should not be construed as a limitation to the present invention.

[0034] A large pumping station installed 7 sets of 2900ZLQ30-7.8 vane full-adjustable axial flow pumps, with a single flow rate of 30m 3 / s, stand-alone power 3400kW, design head 7.8m, design annual running time 5000h. The forebay of the pumping station is affected by the tidal water level of the water source, and the head of the pumping station changes frequently and in a large range. According to the water level data monitored and recorded every 2 hours in a typical day of the pumping station, the change rule of the head of the pump device at different times in the pumping station is as follows: figure 1 shown. According to the time-of-use electricity price regulations for general industrial peaks and valleys of 100kVA an...

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Abstract

The invention provides a method for determining the blade adjustment frequency of variable-angle optimized operation of a large fully-adjustable water pump station, and belongs to the field of operation optimization and energy conservation of engineering systems. Factors of pump unit lift continuous changes, time-of-use electricity prices and the like are taken into consideration, and the variable-angle adjustment frequency is given; under the situation that the requirement for the quantity of daily pumped water is met, a mathematical optimization model is built by aiming at making system daily operating cost minimum, the simulated annealing-particle swarm optimization algorithm is adopted for determining optimal system operation schemes in a solved mode, the optimal operation schemes and total operation cost of a pump station system in various operation periods are calculated when water pump blades have different types of adjustment frequency, influence of the blade adjustment frequency on the operation cost is analyzed, and the reasonable blade adjustment frequency of the pump station system is determined. The water pump blade adjustment frequency and the optimal operation schemes in all the periods determined in the method can not only guarantee that the pump station achieves the variable-angle optimized operation effect and the purpose of saving the operation cost is achieved, but also guarantee reliable durability of a water pump blade adjusting mechanism and blade root seals thereof.

Description

technical field [0001] The invention relates to a method for determining the frequency of blade adjustment, in particular to a method for determining the frequency of blade adjustment for optimal operation of a large-scale fully-adjustable water pump with variable angle, and belongs to the field of energy-saving and safe operation for optimal operation of engineering systems. Background technique [0002] For large pumping stations with adjustable blade angles, the water level of the forebay is affected by changes in the water level of the water source, and the head of the pump device changes greatly and frequently. According to the head of the pump device, by adjusting the angle of the pump blades, the optimal operation of the pump station can be realized and the operating cost of the pump station can be saved. On the premise of satisfying the pumping capacity of the pumping station, if the angle of the pump blades can be adjusted in time and continuously according to the c...

Claims

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Application Information

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IPC IPC(8): F04D15/00
Inventor 仇宝云冯晓莉
Owner YANGZHOU UNIV
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