Efficient coupling variable-frequency speed regulating system and speed regulating method
A frequency conversion speed regulation, high-efficiency technology, applied to fluid transmission devices, components with teeth, belts/chains/gears, etc., to achieve the effects of short construction period, small transformation workload, and simple system connection
Inactive Publication Date: 2013-11-13
BEIJING ZHONGTANGDIAN ENG CONSULTING
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Problems solved by technology
[0005] The purpose of the present invention is to provide a high-efficiency coupling frequency conversion speed regulation system and a speed regulation method to solve the problem of Renovate the external oil system of the hydraulic coupler, realize frequency conversion adjustment, improve the working efficiency of the hydraulic coupler transmission auxiliary system and other technical issues
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[0017] The present invention does not need to change the internal structure of the hydraulic coupler and the connection mode of the existing motor, hydraulic coupler, and auxiliary machine shafting, and only installs an oil pump (auxiliary oil pump) inside the hydraulic coupler outside the hydraulic coupler Matching external oil pump, the inlet pipe of the external oil pump is connected to the oil pool of the oil tank, and the outlet pipe is connected to the inlet pipe of the lubricating oil cooler after passing through the oil overflow valve, thus ensuring the stability of the lubricating oil pressure required for the auxiliary shafting work , At the same time, it realizes the fixed-speed output of the hydraulic coupling turbine and the variable-speed output of the auxiliary shaft system. The oil spill valve forms a series relationship with the external oil pump.
[0018] In the present invention, the frequency converter 20 is connected in series between the power supply 22, ...
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The invention discloses an efficient coupling variable-frequency speed regulating system and a speed regulating method, wherein a hydraulic coupler for completing the mechanical energy transfer mainly consists of a speed change system and a regulation, lubrication and cooling system, the speed change system consists of a pump wheel and a turbine, the regulation, lubrication and cooling system consists of an oil pump, an oil pipeline, an oil cooler and a scoop pipe, an external oil pump and an oil overflow valve are additionally arranged outside a box body of the hydraulic coupler, an inlet of the external oil pump is communicated with an oil pool arranged at the lower part of the box body of the hydraulic coupler, an outlet of the external oil pump is communicated with an inlet pipeline of a lubricating oil cooler, and a mode of realizing the parallel connection between outlet pipelines of an auxiliary oil pump and a main oil pump is formed, and the oil overflow valve and the external oil pump form the series connection relationship. The efficient coupling variable-frequency speed regulating system and the speed regulating method can solve the technical problems to realize the effects that on the basis of not changing the internal structure of the hydraulic coupler and the connection mode of the existing electric motor, the hydraulic coupler and an auxiliary machine shaft system, an external oil system of the hydraulic coupler is modified, the variable-frequency regulation is realized, the work efficiency of an auxiliary machine transmission system of the hydraulic coupler is improved, and the like.
Description
technical field [0001] The invention belongs to transmission systems and speed regulating methods of AC asynchronous motors driving hydraulic couplings and variable speed transmission large auxiliary machines, such as pumps, fans, compressors, rolling mills and the like. Background technique [0002] Pumps, fans, compressors, rolling mills and other large-scale rotating machines are the most widely used auxiliary machines in petroleum, chemical, mining, metallurgy, electric power and other industries, and their shaft power is above 3000kW. Since the introduction of hydraulic transmission technology in my country in 1978, hydraulic couplings have been widely used in the transmission of high-power auxiliary machines such as pumps, fans, compressors, and rolling mills in petroleum, chemical, mining, metallurgy, and electric power industries. , the current social holdings exceed 300,000 units. According to the torque transmission characteristics of variable speed hydraulic coupl...
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IPC IPC(8): F16H61/48F16H41/30
Inventor 苏彦爱杜献伟刘朝红洪绍斌郑守忠冷波胡振江
Owner BEIJING ZHONGTANGDIAN ENG CONSULTING