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Sealing system suitable for continuous wind tunnel semi-flexible wall spray pipe

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: 2021-09-28
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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  • Sealing system suitable for continuous wind tunnel semi-flexible wall spray pipe
  • Sealing system suitable for continuous wind tunnel semi-flexible wall spray pipe
  • Sealing system suitable for continuous wind tunnel semi-flexible wall spray pipe

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Embodiment 1

[0030] This embodiment discloses a sealing system suitable for a continuous wind tunnel semi-flexible nozzle, such as Figure 1-9As shown, the connecting surface static sealing assembly installed on the nozzle section, the sealing assembly between moving parts and the air collection chamber, the connecting surface static sealing assembly includes the first static sealing part and the second static sealing part, and the first static sealing part is installed separately On the flange surface 101 before 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 second The two static sealing parts are installed between the rear flange surface 201 of the nozzle section and the flange surface 202 of the downstream bracket section, and the sealing components...

Embodiment 2

[0039] Based on the basis of embodiment 1, such as Figure 9 As shown, an inflatable dynamic sealing strip 52 is installed between the front and rear sides of the corrugated plate 407 in this embodiment and the side walls. There is a sealing lap 53, and the corrugated plate 407 is fixedly connected to the sealing lap 53. Specifically, the sealing lap 53 and the corrugated plate 407 are connected by bonding technology, and the surface of the inflatable dynamic sealing strip 51 is fixedly connected. The lubricating coating 33, during specific implementation, rushes into the gas of a certain pressure in the inflatable dynamic sealing strip 52, and after expansion, it is close to the frame 401 and the side wall 402, and by adjusting the inflation pressure of the inflatable dynamic sealing strip 52, it can satisfy Different sealing pressure requirements; by adjusting the compression amount of the inflatable dynamic sealing strip 52, different sealing gap changes can be adapted.

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Abstract

The invention discloses a sealing system suitable for a continuous wind tunnel semi-flexible wall spray pipe. The sealing system suitable for the continuous wind tunnel semi-flexible wall spray pipe comprises a connecting surface static sealing component, sealing components between moving parts and a gas collection chamber, wherein the connecting surface static sealing component, the sealing components between the moving parts and the gas collection chamber are arranged on a spray pipe section; the connecting surface static sealing component comprises first static sealing parts and a second static sealing part; the first static sealing parts are mounted on the front flange face of the spray pipe section, the connecting face of a support and a frame, the connecting face of a box cover and the frame, the connecting face of the side wall and the frame, the connecting face of an observation window and a wire passing hole respectively; the second static sealing part is mounted between the rear flange face of the spray pipe section and the flange face of a downstream support section; the sealing component between the moving parts are mounted on the side face of a flexible wall component, the side face of an adjustable contraction section, the side face of a fixed contraction section, the side face of a flexible plate and the sliding face of a partition plate of the gas collection chamber respectively; and an electric pressure regulating valve is mounted in the gas collection chamber. The sealing system suitable for the continuous wind tunnel semi-flexible wall spray pipe has the remarkable advantages that the overall structure is simple, the sealing performance is reliable, the leakage amount is small, the pressure of the gas collection chamber is adjustable and so on. The sealing system suitable for the continuous wind tunnel semi-flexible wall spray pipe adapts to technical field of wind tunnel structures.

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 semi-flexible nozzles of continuous wind tunnels. Background technique [0002] The test Mach number range of the continuous wind tunnel is wide, and the performance index of the flow field is high. 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 molding process of the semi-flexible 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 sliding. It is...

Claims

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Application Information

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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