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A wind tunnel hydraulic clamping device

A hydraulic pressure and film clamping technology, which is applied in the direction of fluid pressure actuating devices, valve devices, measuring devices, etc., can solve the problems of easy oil leakage, achieve the effect of reducing sealing requirements, simple overall structure, and easy oil leakage

Active Publication Date: 2022-04-15
中国空气动力研究与发展中心超高速空气动力研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new wind tunnel hydraulic clamping device to solve the problem of easy oil leakage in the existing hydraulic clamping device

Method used

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  • A wind tunnel hydraulic clamping device
  • A wind tunnel hydraulic clamping device
  • A wind tunnel hydraulic clamping device

Examples

Experimental program
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Effect test

Embodiment 1

[0042] see Figure 1-3 As shown, the wind tunnel hydraulic clamping device provided by the embodiment of the present invention includes a hydraulic cylinder 3 and a fixing member 10. The hydraulic cylinder 3 is sleeved on the first pipe section 1 and can reciprocate along the axial direction of the first pipe section 1. The fixing part 10 is fixedly arranged on the second pipe section 2 , for example, is screwed, welded or both are integrally formed, so that the second pipe section 2 can move synchronously with the fixing part 10 in the axial direction of the second pipe section 2 .

[0043] see figure 1 with figure 2 As shown, the hydraulic cylinder 3 includes a cylinder barrel 31 and two end caps 32, wherein the cylinder barrel 31 and the two end caps 32 are sleeved on the outside of the first pipe section 1, and the cylinder barrel 31 is located between the two end caps 32 , the two ends of which are respectively sealed and connected with two end caps 32 . In one embodi...

Embodiment 2

[0064] see Figure 13-Figure 15 As shown, the second embodiment is basically the same as the first embodiment, and the similarities will not be repeated. The difference is that the oil isolation part is an annular rubber bag 11 with a cavity, and the annular rubber bag 11 is sleeved on the first pipe section 1 And located in the cavity, the cavity communicates with the external hydraulic oil source through the oil inlet and outlet pipeline 111 . The cavity of the annular rubber bag 11 serves as the oil chamber 33 , that is, the annular rubber bag 11 separates the oil chamber 33 in the chamber, so that the hydraulic oil is separated from the first pipe section 1 . In this embodiment, the annular rubber bag 11 does not need to be fixed with the end cap 32 and the partition ring 34, nor does it need to consider the sealing between the end cap 32 and the partition ring 34, the structure is simpler, and its own sealing performance is superior.

[0065] In order to realize the stro...

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Abstract

The invention relates to the technical field of wind tunnel equipment, in particular to a wind tunnel hydraulic clamping device. The device includes a hydraulic cylinder and a fixing piece. The hydraulic cylinder is set on the outside of the first pipe section and can reciprocate along the axial direction of the first pipe section. A housing chamber is formed between the hydraulic cylinder and the first pipe section, and the housing chamber is separated by a partition ring. There are two chambers, and an oil isolation part is arranged in the two chambers, and the oil chamber is isolated in the chamber, and the hydraulic oil in the oil chamber is isolated from the first pipe section. The hydraulic cylinder is along the axial direction of the first pipe section. When moving relative to the separating ring, the oil separation part can expand and contract correspondingly in the axial direction of the first pipe section, and the fixing part is connected to the adjacent end cover through a plurality of pull rods. The wind tunnel hydraulic clamping device separates the hydraulic oil from the first pipe section by setting a retractable oil isolation part, which changes the dynamic seal of the conventional hydraulic clamping device into a static seal, reduces the sealing requirements, and effectively solves the hydraulic clamping problem. The problem of easy oil leakage of the hydraulic cylinder in the device improves reliability.

Description

technical field [0001] The invention relates to the technical field of wind tunnel equipment, in particular to a wind tunnel hydraulic clamping device. Background technique [0002] In the pulse wind tunnel equipment for simulating hypersonic airflow on the ground, such as shock wave wind tunnel and expansion tube wind tunnel, a valve with reliable sealing and fast and complete opening needs to be installed between appropriate pipe sections, usually using a metal diaphragm ( Unbroken) is used as a closed valve to separate different sections of the wind tunnel. When necessary, pressure is applied to the metal diaphragm to quickly break the metal diaphragm to realize the rapid and complete opening and communication of different sections of the wind tunnel. The metal diaphragm is generally set between two pipes through a clamping ring, and in order to meet the sealing requirements, a clamping force of hundreds of tons is required in general engineering application wind tunnel e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M9/04F16K17/40F16K51/00F15B15/14F15B15/20
CPCG01M9/04F16K17/403F16K51/00F15B15/1433F15B15/1423F15B15/20
Inventor 吕治国赵荣娟廖振洋钟涌张扣立常雨
Owner 中国空气动力研究与发展中心超高速空气动力研究所