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An engine anti-surge device

An anti-surge device and engine technology, applied in the direction of engine control, machine/engine, mechanical equipment, etc., can solve the problem that the engine anti-surge device cannot realize automatic control of bleed air volume, so as to prevent surge, improve work reliability, simplify The effect of the system

Active Publication Date: 2022-07-26
CHANGCHUN AVIATION HYDRAULIC CONTROL
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing engine anti-surge device cannot realize automatic control of bleed air volume, the present invention provides an engine anti-surge device

Method used

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  • An engine anti-surge device
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  • An engine anti-surge device

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Embodiment Construction

[0014] In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. Example limitations.

[0016] An anti-surge device for an engine includes a casing 1, a venturi 8, a valve 12, a valve control assembly 11, a cup assembly and a spring-7.

[0017] The casing 1 is provided with a cavity 1 2 and a cavity 2 3 , and a venturi 8 is installed in the casing 1 . One end of the cavity 2 is connected to the venturi 8, and the other end supplies air to the engine...

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Abstract

An anti-surge device for an engine relates to the technical field of anti-surge control devices, and solves the problem that automatic control of bleed air volume cannot be realized. Cavity 1 and one end are connected to the atmosphere and the other end is connected to cavity 1; the venturi is installed in the casing, one end is connected to the bleed air of the engine, the other end is connected to one end of the cavity, and the other end of the cavity is for the engine supply. air; the cup assembly is installed in the shell to form cavity three and cavity four, cavity three is connected to the throat of the venturi, and cavity four is connected to the intake end of the venturi; a spring one is arranged in the three cavity; A pressure-controlled one-way valve is arranged between the third cavity and the fourth cavity; the valve control assembly is connected to the cup assembly and the valve; Cavity 1 communicates with the atmosphere. The invention realizes automatic adjustment of the amount of bleed air and prevents abnormal bleed air of the engine.

Description

technical field [0001] The invention relates to the technical field of air pressure anti-surge control devices with large flow and high Mach number, in particular to an engine anti-surge device. Background technique [0002] In actual operation, the engine does not always work as designed. When the operating conditions change, the compressor operating point will deviate from the design point, resulting in unstable flow under certain conditions. Compressor surge is a typical unstable working condition of the engine, which is characterized by the low-frequency and high-amplitude airflow oscillation phenomenon of the airflow along the axial direction of the compressor. The total pressure at the compressor outlet fluctuates greatly, and the flow and speed also appear. Large-scale pulsation, which will cause engine flameout and strong mechanical vibration, and cause serious damage to aviation gas turbine engines in a very short period of time. The conventional anti-surge valve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D9/10F02D9/02
CPCF02D9/10F02D9/02
Inventor 朱丽颖徐扬马东崔国序
Owner CHANGCHUN AVIATION HYDRAULIC CONTROL
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