Sealing gas supply device for transonic turbine plane blade grid experiment

A gas supply device and transonic technology, which is applied in the field of sealed gas supply device for transonic turbine plane cascade experiments, can solve the problems of high requirements, restriction awareness, high experiment cost, etc., and achieve convenient processing and easy realization , the effect of simple structure
CN112594014AActive Publication Date: 2021-04-02INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF ENGINEERING THERMOPHYSICS - CHINESE ACAD OF SCI
Publication Date
2021-04-02

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Abstract

The invention discloses a sealing gas supply device applied to a transonic turbine plane blade grid experiment. A transonic turbine blade grid is arranged on the end wall of a wind tunnel, a sealing gas supply cavity is formed in the outer side of the end wall of the wind tunnel, and a sealing gas outlet extending in the direction perpendicular to the main flow direction and located at the upstream position of the front edge of the transonic turbine blade grid is formed in the top of the sealing gas supply cavity. Sealing cold gas flowing out of the sealing gas outlet has the component velocity perpendicular to the main flow direction, is injected into a wind tunnel main flow passageway and interacts with main flow gas in the wind tunnel main flow passageway. By means of the characteristicthat the speed direction of cold gas in the sealing gas supply cavity is tangent to the circumferential direction of the transonic turbine blade grid, the circumferential speed of sealing flow can beshown again without rotation of components, and meanwhile the effect of independently changing the flow of the sealing flow and the circumferential speed of the sealing flow is achieved. The sealingjet flow condition required by the transonic turbine plane blade grid experiment can be fully simulated, the sealing flow characteristic in a real turbine is shown again, and a precise three-dimensional flow field structure is easy to obtain.
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Description

technical field

[0001] The invention belongs to the field of aero-engine / gas turbine transonic turbine plane cascade experiments, and relates to a sealed gas supply device used for transonic turbine plane cascade experiments. The present invention utilizes the characteristic that the velocity direction of the cold air in the air supply chamber of the seal is tangent to the circumferential direction of the transonic turbine cascade, so that the circumferential velocity of the seal flow can be reproduced without the rotation of parts, and at the same time, the seal flow can be changed independently The effect of the flow rate and the peripheral velocity of the sealing flow can fully simulate the sealing jet flow conditions required for the transonic turbine flat cascade experiment, which can greatly reduce the cost of the turbine sealing experiment. Background technique

[0002] In modern advanced aero-engines, a large amount of cooling air and sealing air are required to ensu...

Claims

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