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Hydraulic driving pressure adjusting valve for wind tunnel

A pressure regulating valve and hydraulic technology, which is applied in the field of pressure regulating valves, can solve the problems that the design level and manufacturing level cannot be reached or cannot be achieved, and achieve the effects of good air flow symmetry, fast speed, short full opening and full closing time

Active Publication Date: 2015-04-22
CHINA ACAD OF AEROSPACE AERODYNAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing industrial valve design level and manufacturing level cannot meet the above requirements, so they cannot be used for wind tunnel pressure regulation

Method used

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  • Hydraulic driving pressure adjusting valve for wind tunnel
  • Hydraulic driving pressure adjusting valve for wind tunnel
  • Hydraulic driving pressure adjusting valve for wind tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] Such as figure 1 As shown, a hydraulically driven pressure regulating valve used in a wind tunnel of the present invention includes: a fairing 1, a linear displacement sensor 2, an inner casing 3, an outer casing 4, a hydraulic cylinder 5, a guide support 6, and a moving sleeve 7. Pressure regulating profile 8, sealing ring 9, guide shaft 10 and pressure block 11; guide shaft 10 is located at the center of inner shell 3; hydraulic cylinder 5 drives moving sleeve 7 to slide back and forth on guide shaft 10; inner shell An air flow channel is formed between the body 3 and the outer shell 4; the pressure regulating profile 8 is located between the outer shell 4 and the sealing ring 9, and the profile curve of the pressure regulating profile 8 adopts an exponential characteristic curve; the section of the sealing ring 9 is wedge-shaped , the seal is realized by e...

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PUM

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Abstract

The invention discloses a hydraulic driving pressure adjusting valve for a wind tunnel. The hydraulic driving pressure adjusting valve comprises a fairing (1), a linear displacement sensor (2), an inner casing (3), an outer casing (4), a hydraulic cylinder (5), a guiding support (6), a movable sleeve (7), a pressure adjusting profile (8), a sealing ring (9) and a guiding shaft (10). By means of design of the pressure adjusting profile, an air flow circulating channel, channel area adjusting by sliding the movable sleeve on the guiding shaft, and the like, the pressure adjusting valve can obtain a linear adjusting characteristic or an adjusting characteristic close to the linearity under a working state. Flow symmetry is good, a pressure adjusting range is wide, control precision is high, fully open time and fully closed time are short, and downstream pressure fluctuation is small.

Description

technical field [0001] The invention relates to a pressure regulating valve, in particular to a hydraulically driven pressure regulating valve used in a sub-span super three-sonic wind tunnel. Background technique [0002] Wind tunnels have always played a very important role in aerodynamic research and aircraft design. Many important theories of aerodynamics are proposed after a large number of observations in wind tunnel experiments, and their applications have been verified by wind tunnel experiments. The pressure regulating valve is an important part of the wind tunnel. In the three-sonic wind tunnel, it is used to control the airflow pressure in the stable section of the wind tunnel. During the operation of the wind tunnel, as the pressure of the air source drops, the opening of the pressure regulating valve is adjusted through the control system to ensure that the air pressure in the stable section is stable at a certain operating pressure value and maintain the norma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/00F16K1/36F16K1/46F16K1/48F16K1/32F16K31/122G01M9/06
Inventor 王凯文贾英胜沈逢京孙勇堂崔春黄景博陈良泽李玉秋崔旭朱艳艳张淑菊孟一戈
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
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