Transmission and converter System Why are most power shift transmissions used with hydraulic torque converters in construction machinery?
A non-rigid Torque Converter using liquid as the working medium is one of the types of hydraulic transmission. The hydraulic torque converter has a closed working chamber in which the liquid circulates. The pump wheel, turbine wheel and guide wheel are respectively connected with the input shaft, output shaft and housing. When the power machine (internal combustion engine, electric motor, etc.) drives the input shaft to rotate, the liquid flows out of the centrifugal pump wheel, passes through the turbine, the guide wheel and then returns to the pump wheel in sequence, and circulates again and again. The pump wheel transfers the mechanical energy of the input shaft to the liquid. The high-speed liquid drives the turbine to rotate, transferring energy to the output shaft. The torque converter transmits torque by generating a change in momentum moment by the interaction of liquid and blades. The main feature of the hydraulic torque converter different from the hydraulic coupling is that it has a fixed guide wheel. The guiding effect of the guide wheel on the liquid makes the output torque of the torque converter higher or lower than the input torque, so it is called a torque converter. The ratio of the output torque to the input torque is called the torque conversion coefficient. The zero-speed torque conversion coefficient when the output speed is zero is usually about 2-6. The torque conversion coefficient decreases with the increase of output speed. The input shaft and output shaft of the hydraulic torque converter rely on liquid connection, and there is no rigid connection between the working components. The characteristics of the hydraulic torque converter are: it can eliminate shock and vibration, overload protection performance and start performance; the speed of the output shaft can be greater or less than the speed of the input shaft, and the speed difference between the two shafts varies with the size of the transmitted torque; Good automatic transmission performance, the output speed will automatically decrease when the load increases, and vice versa; the power machine has a stable working area, and the transient changes of the load will not be reflected on the power machine. The hydraulic torque converter has higher efficiency near rated working conditions, with the highest efficiency being 85%~92%
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On January 4, 2017, Wison Ocean Engineering announced that the company has successfully developed a series of floating power generation solutions. Designed with the concept of “one-stop convenient power generationâ€, these new product series named after W-FSRP (Wison-Floating Storage and Re-Gasification Power Generation Solution) can integrate LNG loading, storage, regasification and power generation. Features. The smallest power generation is 10MW and the largest is 800MW.
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     Due to global concerns about environmental change, countries are looking to improve the combination of energy use to reduce the impact on the environment. In Wison's program, LNG was selected as the fuel for power generation in this floating power generation program with its low carbon emission cleanliness. Wison can also provide design solutions using other fuels as needed.
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     It is reported that the Wison FSRP design solution integrates storage, regasification and power generation functions into one device. The heart of the device is the power generation unit. Wison works with leading power generation equipment suppliers to provide complete solutions for power generation and transmission. While balancing operational efficiency, maintenance and plant convenience, Wison's design can be flexibly adapted to suit different power needs.
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     Compared with the traditional onshore power generation scheme, the floating scheme is completed at the base due to the construction project, has high construction efficiency and can effectively control the cost, and has the advantages of short construction period, low cost and greater flexibility. At the same time, because it can minimize land occupation, it does not require a large amount of infrastructure, and it is also a solution with higher return on investment. Therefore, floating LNG power generation solutions have received more and more attention from all over the world.
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     Cui Ying, CEO of Wison Offshore, said, “We are seeing growing demand in Southeast Asia, West Africa, the Caribbean, and the West Coast of India. The demand for electricity in these areas is growing, but the onshore power plant solutions are from commercial The angle may not be feasible or not."
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     As the world's first FLNG and the first general contractor for FSRU made in China, Wison Offshore has leveraged its extensive experience in floating liquefaction and regasification to develop the W-FSRP product line.
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     Cui Ying said, “With the launch of the W-FSRP series, we can provide integrated, shorter construction and more economical solutions for customers in the LNG industry and the power industry. As the product line and customer segments continue to expand, We will further strengthen Wison's work as a leading provider of floating LNG solutions for the mid-stream of the global oil and gas industry."     Â