Soft airbag for loading inner pressure on inner wall of cylinder

An airbag and internal pressure technology, applied in the direction of applying stable tension/pressure to test the strength of materials, can solve the problems of high cost, large consumption of steel and natural rubber, cumbersome implementation methods, etc., and achieve low cost, light weight and easy installation convenient effect

Active Publication Date: 2015-01-21
BEIJING INST OF STRUCTURE & ENVIRONMENT ENG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the traditional internal pressure realization method is

Method used

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  • Soft airbag for loading inner pressure on inner wall of cylinder
  • Soft airbag for loading inner pressure on inner wall of cylinder
  • Soft airbag for loading inner pressure on inner wall of cylinder

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Such as figure 1 As shown, the soft airbag that loads internal pressure on the inner wall of the cylinder described in the present invention is a round cake-shaped airbag composed of an upper end face 1, a lower end face 2 and a side wall 6, as figure 2 As shown, cloth strips 3 are evenly bonded between the upper and lower end surfaces inside the airbag, and two nozzles 4 are processed on the upper end surface 1, which are used for pressurization and pressure measurement respectively; Several buckles 5 are used to limit and fix the airbag during installation.

[0029] During the test, tie a certain length of rope around the end frame of the test piece, and connect the other end of the rope to the buckle 5 on the upper end of the airbag to fix the airbag at a specified height, such as image 3 , Figure 4 shown. The two nozzles 4 of the airba...

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Abstract

The invention particularly relates to a soft airbag for loading inner pressure on an inner wall of a cylinder, belonging to the technical field of space environment strength. The airbag is a round-cake-shaped airbag composed of an upper end face, a lower end face and a side wall, wherein cloth strips are uniformly stuck between the upper and lower end faces in the airbag and two pipe nozzles are arranged on the upper end face; and a plurality of buckles are annularly stuck on the upper end face. The airbag is machined by adopting a PVC thin film. In a testing process, when cable and hose equipment need to be arranged on the inner wall of a test piece, a cable and a hose are required to pass through the airbag; an axial hole is formed in the center of the airbag; and a hard pipe penetrates into the hole. In a testing process, when different inner pressure loads are loaded at different heights of the test piece, the plurality of airbags are sequentially mounted in the axial direction; two hoses are led out from each airbag and are used for pressurizing and measuring pressure; and in a mounting process, the two hoses of the airbag on the upper side penetrate through the hard pipe at the center of the airbag on the lower side. The soft airbag for loading the inner pressure on the inner wall of the cylinder has light weight and low cost and is convenient to mount.

Description

technical field [0001] The invention belongs to the technical field of spaceflight environment strength, and in particular relates to a soft airbag that applies internal pressure to the inner wall of a cylinder. Background technique [0002] There are many structural components of the rocket subject to internal pressure loads, such as fairings, instrument cabins, inter-box sections, inter-stage sections, bellows, etc. These components require testing during development, design and production. The internal pressure test is to use gas or liquid as the stamping medium to simulate the design situation when the internal pressure of the rocket structure reaches the maximum in a certain working state. For example, when the rocket flies in the atmosphere, the instrument cabin and the truncated cone shells of the head bear the internal pressure formed by aerodynamic force. [0003] The traditional internal pressure realization method is to process an internal pressure cylinder with...

Claims

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Application Information

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IPC IPC(8): G01N3/12
Inventor 陈昊尹伟丁文祺顾海贝白鹭葛鹏梁超刘彦毛吴兵
Owner BEIJING INST OF STRUCTURE & ENVIRONMENT ENG
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