Controllable diffusion moving blade of gas compressor for gas turbine
A gas turbine and compressor technology, which is applied in the field of flight aviation, can solve the problems of reduced compressor efficiency, increased energy loss, and short service life, and achieves the effects of improving efficiency, increasing service life, and ensuring safe operation.
Inactive Publication Date: 2015-03-25
镇江大有硬质材料有限公司 +1
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Problems solved by technology
When the incoming flow of the compressor is close to or greater than the critical Mach number, the traditional subsonic airfoil will produce a critical condition, that is, a shock wave will be generated at the back arc of the airfoil, which will make the subsonic flow in the compressor unstable and cause a sharp increase in energy loss , the efficiency of the compressor is greatly reduced, the service life is short, and the safe operation of the compressor is affected
Method used
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[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] like figure 1 As shown, the present invention includes a blade profile 1 and a petiole 2, the blade profile 1 is composed of a subsonic region profile 11 and a supersonic region profile 12 along the blade extension direction, and the subsonic region profile 11 and the supersonic region profile. 12 are connected together; the tip of the airfoil 12 in the supersonic region is designed at an inclined angle. The widths of both ends of the airfoil 11 in the subsonic region are inconsistent in size, and the width decreases continuously from the end connected with the petiole 2 to the end connected with the airfoil 12 in the supersonic region. The width of the airfoil 12 in the supersonic region varies along the extending direction of the blade, and the width from the top to the middle is the same, and the width from the middle to the end connected with the airfoil 11...
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The invention discloses a controllable diffusion moving blade of a gas compressor for a gas turbine. The moving blade is composed of a blade profile and a blade handle, wherein the blade profile is composed of a subsonic region blade profile body and a supersonic region blade profile body in the extending direction of the blade, and the subsonic region blade profile body and the supersonic region blade profile body are connected together; the blade handle is of a rounded rectangular structure, and one end face of the blade handle is connected with one end of the subsonic region blade profile body. Through the controllable diffusion moving blade, the efficiency of the gas compressor is greatly improved, service life is prolonged, and safe running of the gas compressor is guaranteed.
Description
technical field [0001] The invention relates to a moving blade, in particular to a controllable diffuser moving blade of a gas turbine compressor, which belongs to the technical field of flight aviation. Background technique [0002] Gas turbines are widely used in electric power, aviation, ships, military, chemical and other fields, and are important equipment for the national economy and even the national defense industry; compressor blades are extremely important parts of gas turbines. When the incoming flow of the compressor is close to or greater than the critical Mach number, the traditional subsonic airfoil will produce a critical working condition, that is, a shock wave will be generated at the back arc of the airfoil, which will make the subsonic air flow in the compressor unstable and lead to a sharp increase in energy loss. , the compressor efficiency is greatly reduced, the service life is short, and the safe operation of the compressor is affected. SUMMARY OF ...
Claims
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Login to View More IPC IPC(8): F04D29/38
CPCF04D29/324F04D29/384F05D2240/302
Inventor 高青风陈立军
Owner 镇江大有硬质材料有限公司