Gas compressor with stability enhancing and effect improving device
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A compressor and high-pressure gas technology, applied in the fields of gas turbines, gas blowers, and gas compressors, can solve the problems of reduced operating efficiency and operating stability, and achieve improved accuracy and response speed, improved performance, improved stability and flexibility sexual effect
Active Publication Date: 2016-09-07
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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[0004] In the actual operation of the vane-type general-purpose fluid compression machinery currently operating in the industry, according to the actual requirements of the fluid delivery system, the compressor machinery often works under non-design conditions. In this case, the operating efficiency and operating stability will be greatly reduced
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[0052] In the present invention, by arranging the stability expansion and efficiency enhancement device on the compressor casing, the high-pressure gas at the outlet of the compressor is used as the driving gas of the expansion stability and efficiency enhancement device to eject the gas from the root of the stationary blade and the top of the moving blade in the middle stage of the compressor, The driving gas is mixed with the injected gas and injected to the top of the rotor blade at the compressor inlet. By sucking out the gas at the root of the stator vane in the middle stage of the compressor, the thickness of the boundary layer in this area and the vortex strength in the corner area can be reduced, and the flow separation in this area can be suppressed; The injection of high-energy gas at the top of the rotor blade at the inlet of the compressor can improve the flow state of the nearby area, which is beneficial to broaden the stable working range of the compressor, reduce...
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Abstract
The invention provides a gas compressor with a stability enhancing and effect improving device. The gas compressor comprises a casing, a wheel hub and the stability enhancing and effect improving device. A high-pressure gas suction hole, a gas ejecting hole and M gas jetting holes are formed in the casing. High-pressure gas is sucked into the stability enhancing and effect improving device through the high-pressure gas suction hole. Gas at the top of an intermediate-stage movable blade and gas at the root of an intermediate-stage static blade are sucked into the stability enhancing and effect improving device through the gas ejecting hole. The mixed gas is ejected to the top of a low-pressure-stage movable blade through the gas ejecting hole. By means of the gas compressor with the stability enhancing and effect improving device, the gas at the root of the intermediate-stage static blade and the gas at the top of the intermediate-stage movable blade can be sucked out, the thickness of a boundary layer of the area at the root of the intermediate-stage static blade and the vortex strength of an angle area can be reduced, flow separation of the areas is inhibited, the functions of reducing flowing losses and improving the efficiency of the gas compressor can be achieved, flowing blockage and gas backflow of the areas during instable work of the gas compressor are relieved, and the function of enlarging the stable work range of the gas compressor can be achieved.
Description
technical field [0001] The invention relates to the technical field of gas compression devices, in particular to a gas compressor with a device for increasing stability and increasing efficiency, which is especially suitable for gas turbines, gas compressors, and gas blowers, and is used in aviation, chemical industry, electric power, metallurgy, transportation, textiles, etc. industry. Background technique [0002] In my country's basic industrial fields (chemical industry, power generation, metallurgy, electric power, transportation, textile, etc.), a large number of fluid conveying machinery with blades as aerodynamic structural elements are operating, mainly including gas compressors, ventilators, blowers and compressors. The power, pressure ratio, and flow coverage of this type of gas delivery device basically cover the entire industrial application field, and most of them are directly driven by electricity. Therefore, a huge amount of electric power is consumed while ...
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