Speed regulating method for pump wheel of hydraulic coupler
A technology of hydraulic couplings and couplings, applied in belts/chains/gears, components with teeth, mechanical equipment, etc., which can solve problems such as low efficiency and low speed ratio
Active Publication Date: 2012-06-20
长春时代机电新技术有限公司
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Problems solved by technology
That is to say, the lower the speed ratio, the lower the efficiency, which is the biggest disadvantage of the volumetric speed regulation method
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[0007] In the present invention, when the liquid filling amount of the working wheel is kept fixed for the same coupler, that is, the liquid filling amount with the lowest slip rate and the highest efficiency, the rotating speed of the pump wheel is adjusted.
[0008] The patent of the present invention proposes a brand-new speed regulation method exactly. It replaces the volumetric speed regulation method to solve the problem of high energy consumption when the volumetric speed regulation is operated at a low speed ratio.
[0009] Due to factors such as redundancy in the design and changes in the load rate during operation of the hydraulic coupling with volumetric speed regulation, the operation of the coupling often deviates from the rated working condition. The lower the load rate, the lower the operating efficiency; the speed regulation efficiency of the pump wheel can always be maintained Above 93%, the speed regulation efficiency of the pump wheel is much higher than the...
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The invention relates to a speed regulating method for a pump wheel of a hydraulic coupler, which belongs to the field of transmission machinery. The invention aims to replace a volumetric speed regulating method and provides the speed regulating method for the pump wheel of the hydraulic coupler, which is used for regulating the rotating speed of the pump wheel when the liquid charging quantity of a working wheel is fixed. When the condition that the liquid charging quantity of the working wheel of the same coupler, i.e. the liquid charging quantity with lowest slip ratio and highest efficiency, is fixed is kept, the rotating speed of the pump wheel is regulated according to the speed regulating method for the pump wheel of the hydraulic coupler. The speed regulating method for the pump wheel of the hydraulic coupler is a high-efficiency speed regulating method, and the high-efficiency running of the coupler always can be kept within the entire speed regulating range. The speed regulation of all hydraulic couplers which run at low rotating speed ratio and are in volumetric speed regulation can be replaced. When the hydraulic coupler runs at the rotating speed ratio of 75 to 65 percent, electricity can be saved by 20 to 30 percent. Variable-frequency speed regulation is a best mode for realizing the speed regulation of the pump wheel of the hydraulic coupler. The speed regulating method for the pump wheel of the hydraulic coupler is suitable for the variable-frequency reconstruction of the speed regulating machinery of a hydraulic coupler in running and is also suitable for the energy-saving application of electric mechanical equipment needing the switching speed regulation of the volumetric speed regulation (industrial frequency) and the speed regulation (variable frequency) of the pump wheel in newly-built engineering. The switching application of the speed regulating method for the pump wheel of the hydraulic coupler and the volumetric speed regulating method can be realized on the same coupler, which is convenient, flexible, safe and reliable. A fire-new speed regulating method for a pump wheel of a coupler, which is never applied, is provided from a principle to a practice.
Description
technical field [0001] The invention belongs to the field of transmission machinery. Background technique [0002] The main auxiliary machines that need to adjust the output power and speed in the production process of electric power, metallurgy, chemical industry, mining, steel and other enterprises at home and abroad, such as high-pressure boiler electric feed water pumps in thermal power plants, supply and induced draft fans, etc. are equipped with speed-regulating liquid Force coupling. At present, the speed regulation methods of speed regulation fluid couplings at home and abroad all adopt the volumetric speed regulation method. The so-called volumetric speed regulation method is exactly the method of regulating the liquid filling amount in the oil cavity of the working wheel. The efficiency of volumetric speed regulation is always equal to the ratio of turbine speed to pump impeller speed. The best working point of the hydraulic coupling is its output rated working ...
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IPC IPC(8): F16H61/48
Inventor 张文海张环宇
Owner 长春时代机电新技术有限公司