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A sealing system suitable for semi-flexible nozzles in continuous wind tunnels

A soft-wall nozzle and sealing system technology, which is applied in the sealing of engines, wind power generation, testing of machine/structural components, etc., can solve problems such as nozzle gas leakage, achieve the effect of reducing leakage paths and simplifying the overall structure

Active Publication Date: 2022-05-31
中国空气动力研究与发展中心设备设计与测试技术研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a sealing system suitable for the semi-flexible nozzle of the continuous wind tunnel to solve the problem of gas leakage of the semi-flexible nozzle of the continuous wind tunnel

Method used

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  • A sealing system suitable for semi-flexible nozzles in continuous wind tunnels
  • A sealing system suitable for semi-flexible nozzles in continuous wind tunnels
  • A sealing system suitable for semi-flexible nozzles in continuous wind tunnels

Examples

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Embodiment 1

[0030] This embodiment discloses a sealing system suitable for a continuous wind tunnel semi-flexible wall nozzle, such as Figure 1-9As shown, the connection surface static seal assembly, the seal assembly between the moving parts and the gas collection chamber are installed on the nozzle section. The connection surface static seal assembly includes a first static seal component and a second static seal component, and the first static seal components are installed separately. On the front flange surface 101 of the nozzle section, the connection surface 102 between the support and the frame, the connection surface 103 between the box cover and the frame, the connection surface 105 between the side wall and the frame, the connection surface 106 of the observation window and the wire hole 104, the first The two static sealing components are installed between the rear flange surface 201 of the nozzle section and the flange surface 202 of the downstream bracket section, and the mov...

Embodiment 2

[0039] On the basis of Example 1, as Figure 9 As shown, an inflatable dynamic sealing strip 52 is installed between the front and rear sides and the side walls of the corrugated plate 407 in this embodiment. There is a sealing lap 53, and the corrugated plate 407 and the sealing lap 53 are fixedly connected. Specifically, the sealing lap 53 and the corrugated plate 407 are connected by an adhesive process. When the lubricating coating 33 is specifically implemented, a certain pressure of gas is injected into the inflatable dynamic sealing strip 52, and after expansion, it is close to the frame 401 and the side wall 402. By adjusting the inflation pressure of the inflatable dynamic sealing strip 52, it can meet the Different sealing pressure requirements; by adjusting the compression amount of the inflatable dynamic sealing strip 52, it can adapt to different sealing gap changes.

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Abstract

The invention discloses a sealing system suitable for a continuous wind tunnel semi-flexible nozzle, which includes a static sealing assembly on the connecting surface installed on the nozzle section, a sealing assembly between moving parts and a gas collection chamber, and the static sealing assembly on the connecting surface includes The first static sealing part and the second static sealing part, the first static sealing part is respectively installed on the front flange surface of the nozzle section, the connection surface between the support and the frame, the connection surface between the box cover and the frame, and the connection surface between the side wall and the frame , the connection surface of the observation window and the wire passing hole, the second static sealing part is installed between the rear flange surface of the nozzle section and the flange surface of the downstream support section, and the sealing components of the moving parts are respectively installed on the side of the flexible wall component, the side of the adjustable shrinkage section, The side of the fixed contraction section, the side of the flexible plate and the sliding surface of the partition of the gas collection chamber are installed in the gas collection chamber. The electric pressure regulating valve is installed. The present invention has the advantages of simple overall structure, reliable sealing performance, small leakage, and adjustable pressure of the gas collection chamber. and other significant advantages. Adapt to the field of wind tunnel structure technology.

Description

technical field [0001] The invention belongs to the technical field of wind tunnel structures, and in particular relates to a sealing system suitable for a semi-flexible wall nozzle of a continuous wind tunnel. Background technique [0002] The continuous wind tunnel has a wide range of Mach numbers and high requirements for flow field performance indicators. The nozzle section is the core equipment for establishing the flow field, and its gas leakage must be controlled within a very low range. The gas leakage of the nozzle section includes two aspects: one is the blow-by gas inside the flow channel (internal leakage); the other is the gas exchange between the nozzle section and the external environment (external leakage). During the forming process of the semi-flexible wall nozzle, the adjustable constriction section is in dynamic motion relative to the fixed constriction section and the throat block, and the flexible wall component and the side wall are also in relative s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/10F16J15/46F16J15/3284F16J15/324G01M9/04
CPCF16J15/10F16J15/46F16J15/3284F16J15/324G01M9/04Y02E10/72
Inventor 聂徐庆杨文国陈万华顾志旭张浩蒋国庆廖文林
Owner 中国空气动力研究与发展中心设备设计与测试技术研究所