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Gas compressor blade top plasma stability expanding system

A plasma and compressor technology, applied in mechanical equipment, machines/engines, liquid fuel engines, etc., can solve problems such as creepage phenomenon, complicated wiring, improper control of power supply voltage, etc., achieve good control effect and reduce flow loss, the effect of ease of installation and use

Active Publication Date: 2014-10-08
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, this arrangement also has some disadvantages, such as relatively complicated wiring, and improper control of the power supply voltage can easily cause creepage, etc.

Method used

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  • Gas compressor blade top plasma stability expanding system
  • Gas compressor blade top plasma stability expanding system
  • Gas compressor blade top plasma stability expanding system

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Embodiment Construction

[0026] 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.

[0027] The plasma stability expansion system on the top of the compressor blade provided by the invention changes the traditional staggered arrangement of electrodes into an opposite arrangement, which can block the leakage flow and delay the occurrence of a stall when the working condition of the compressor changes. Such as figure 2 as shown, figure 2 A schematic diagram of a compressor blade top plasma stabilization system provided for the present invention, the system includes a plasma actuator 301, a neutral line 302, a high voltage line 303, a pressure sensor 304, a casing 305 of a turbomachinery, an insulating material 306, and a compressor Blade 307, high voltage electrode 308, AM / FM circuit 309, computer 310 an...

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Abstract

The invention discloses a gas compressor blade top plasma stability expanding system. The system comprises a gas compressor blade, a high voltage electrode, a pressure sensor and a plasma exciter, wherein the high voltage electrode is arranged inside a machine case above the gas compressor blade, the high voltage electrode is opposite to the gas compressor blade, the upper side and the lower side of the high voltage electrode are coated with insulation materials, the pressure sensor is connected to a computer through a collection board card, the plasma exciter is connected to the high voltage electrode and the gas compressor blade at the same time through an amplitude modulation and frequency modulation circuit, and the amplitude modulation and frequency modulation circuit is further connected to the computer. By the utilization of the gas compressor blade top plasma stability expanding system, due to the fact that the whole system can be automatically controlled by the computer, the pressure sensor is utilized for detecting pressure signals on the inner wall face of a gas compressor, and leakage flow is blocked by plasma which can automatically detect stall foreboding when the gas compressor is in the stall condition approximately and is generated by discharging of a blade top and the machine case, so that flow losses are reduced, stability margin is expanded, and the aim of stall postponing is achieved.

Description

technical field [0001] The invention mainly relates to the technical field of active control of fluid machinery, especially a compressor blade top plasma stabilization system, which is used for active flow control of compressors in gas turbines and aero-engines, and can also be applied to civil applications such as pumps and fans. In turbomachinery. Background technique [0002] Turbomachinery plays an important role in the development of the national economy, and pumps and fans are widely used in industry; while the development and manufacture of gas turbines and aeroengines is an important symbol of a country's comprehensive scientific research strength. As one of the three major components of gas turbines and aero-engines, the stability of the axial flow compressor is an important indicator. The operating range of the compressor is limited by the stall boundary line. In order to prevent serious accidents caused by the compressor entering the stall state during variable o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/54
Inventor 林峰张文强王子楠
Owner INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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