Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Hydraulic drive pressure reducing valve for wind tunnel

A pressure reducing valve, hydraulic technology

Active Publication Date: 2014-12-31
CHINA ACAD OF AEROSPACE AERODYNAMICS
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing industrial valves did not meet the requirements and therefore could not be used for pressure regulation in wind tunnels

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydraulic drive pressure reducing valve for wind tunnel
  • Hydraulic drive pressure reducing valve for wind tunnel
  • Hydraulic drive pressure reducing valve for wind tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The principles and features of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, the hydraulically driven pressure reducing valve of the present invention includes: nut 1, backing ring 2, sealing ring 3, lower cover 4, pressure regulating piston 5, valve body 6, backing ring 7, movable nut 8, retaining ring 9, method Lan 10, gasket 11, closing piston 12, nut 13, backing ring 14, sealing ring 15, rod 16, disc seat 17, sealing ring 18, nozzle 19, sealing ring 20, felt ring 21, oil pipe nozzle 22, sealing Ring 23 and nozzle 24. When the pressure reducing valve is closed, the closing piston 12 will press the pressure regulating piston 5 tightly through the rod 16. When the pressure reducing valve is opened, the gas flow will be injected through the air inlet of the pressure reducing valve, and the pressure regulating piston 5 will inject hydraulic pressure through the oil nozzle 22 at ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a hydraulic drive pressure reducing valve for a wind tunnel. The hydraulic drive pressure reducing valve for the wind tunnel comprises an air inlet, an air outlet, a valve body (6), a closing piston (12), a pressure adjusting piston (5), a rod (16), an oil pipe mouth (22) and a plate base (17). The pressure adjusting piston (5) includes a piston body (51), plates (52), gaskets (53), nuts (54), seal rings (55, 56) and an upper cover (57). The closing piston (12) comprises a cover (128), inner pistons (127), outer pistons (126), roller bodies (122) and a filler neck (1216). According to the hydraulic drive pressure reducing valve for the wind tunnel, the profile curves of the plates are designed to be elliptic characteristic curves, and therefore the pressure reducing valve in the working state is enabled to obtain linear or close to linear regulating characteristics. Meanwhile, the hydraulic drive pressure reducing valve for the wind tunnel has the advantages of being good in airflow symmetry properties, wide in adjusting range, short in time of full opening and full closing , and capable of completing a wind tunnel blowing experimental task with a mach number range of 5-8.

Description

technical field [0001] The invention relates to a pressure reducing valve, in particular to a hydraulically driven pressure reducing valve used in a hypersonic 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 reducing valve is an important part of the wind tunnel. In the hypersonic wind tunnel, it reduces the inlet pressure to a certain required outlet pressure through the throttling of the opening and closing parts, and can use itself when the inlet pressure and flow change. The energy of the medium keeps the outlet pressure basically constant, and it can be used as a pressure regulating device to complete the primary pressure regulating task of the wind tunnel. During the operation ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/12F16K31/122F16K27/02
Inventor 沈逢京崔旭石运军陈良泽黄景博卜俊辉李玉秋崔春孙勇堂孙涛穆东波赵小运
Owner CHINA ACAD OF AEROSPACE AERODYNAMICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com