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Flexible non-axisymmetric processing flow control method of casing

A non-axisymmetric and casing processing technology, which is applied to machines/engines, components of pumping devices for elastic fluids, mechanical equipment, etc., can solve the problems of reduced operating efficiency and operating stability, and achieve good expansion and stability Effect, ease of processing and installation

Active Publication Date: 2013-04-24
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0007] 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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  • Flexible non-axisymmetric processing flow control method of casing
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[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings. While illustrations of parameters including particular values ​​may be provided herein, it should be understood that parameters need not be exactly equal to the corresponding values, but rather may approximate the values ​​within acceptable error margins or design constraints.

[0025] From the perspective of fluid mechanical aerodynamic thermodynamics, the present invention adopts a flexible non-axisymmetric case processing method suitable for controlling the leakage flow of the compressor blade tip, so that the loss of the blade tip leakage flow and the mixing loss are kept at a low level. The method for processing the flexible non-axisymmetric case of the present invention is suitable for blade-type universal fluid compre...

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Abstract

The invention discloses a compressor expanding stable flexible non-axisymmetric processing flow control method of a casing. The compressor expanding stable flexible non-axisymmetric processing flow control method of the casing is a passive flow control method. Due to the fact that flexible materials with surface slotting are arranged on the fixed position of a compressor casing in a non-axisymmetric mode, on one hand, stable operation area of the compressor is broadened, on the other hand, flow state of blade tip region is improved, and flow loss is reduced, and compressor efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of fluid delivery, and relates to a flow control method for a flexible non-axisymmetric casing in a blade type fluid machine, which is used in aviation, chemical industry, electric power, metallurgy, transportation, textile and other industries. Background technique [0002] As we all know, in my country's basic industrial fields (chemical industry, power generation, metallurgy, electric power, transportation, textile, etc.), there are a large number of fluid conveying machines with blades (axial flow, centrifugal, and a mixture of the two) as the aerodynamic structural elements. Includes 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. From computer chip fans to multi-stage compressor groups in large steelmaking enterprises is a strong evidence, and most of them rely...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/54
CPCF04D29/685F04D29/526
Inventor 李钢聂超群朱俊强杨凌元徐燕骥
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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