System and method for measuring low-temperature sealing specific pressure performance parameters of sealing material
A technology of sealing specific pressure and sealing material, which is used in the test of fluid tightness, by detecting the appearance of fluid at the leak point, measuring the direction of the device, etc., it can solve the problems of inconsistent shrinkage of parts and increased sealing pressure of F4 material, etc.
Active Publication Date: 2016-06-15
BEIJING INST OF SPACE LAUNCH TECH +1
View PDF5 Cites 9 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, due to the shrinkage of the relevant parts of the cryogenic flange at low temperatures, and the different temperature changes of the parts, different sizes, and different materials, the degree of shrinkage of the parts is inconsistent, and the sealing specif
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0046] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0047] like figure 1 , 2 As shown, the present invention is a system for measuring the low-temperature sealing specific pressure performance parameters of sealing materials, including: a sealing specific pressure testing device, a liquid nitrogen tank, a mounting bracket, a control module and a leak detection device;
[0048] The leak detection device includes gas cylinder, gas cylinder valve, pressure reducer, pressure gauge P1, leak detection gas pipeline, leak detection pipeline, leak detection valve and leak detection container; the control module also includes gas source, control gas valve, Pressure gauge P2 and control air pipeline; the seal specific pressure test device includes a low temperature cut-off valve assembly, a leak detection nozzle and a pressure charging nozzle, wherein the low temperature cut-off valve assembly in...
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
Login to view more Abstract
The invention discloses a system and a method for measuring the low-temperature sealing specific pressure performance parameters of the sealing material. The system for measuring the low-temperature sealing specific pressure consists of a sealing specific pressure testing device, a liquid nitrogen tank, a mounting bracket, a control module, a pipeline, a gas supply and leak detection device and the like. Through controlling the pressure of the gas source and detecting the pressure of the gas leakage, the minimum compressive stress or the specific pressure y of the sealing gasket material, and the gasket factor m of the sealing gasket material in low-temperature working conditions can be calculated in combination with the structure parameters of a piston., a valve stem, a sealing part, a sealing gasket and other parts. Meanwhile, sealing gaskets of different specifications are replaced during the testing process, so that the sealing specific pressure performance parameters of the sealing gaskets of different specifications in the low-temperature state can be determined. According to the technical scheme of the invention, the liquid-nitrogen environment at a temperature of -196 DEG C is adopted as the testing environment for testing the low-temperature sealing specific pressure performance parameters of the sealing material. In this way, the real working condition for the sealing state of a sealing gasket in a low-temperature medium pipeline can be really reproduced. The system and the method provide a reference for the parameter selection of the sealing part in the low-temperature medium pipeline, and are better in pertinence and objectivity.
Description
technical field [0001] The invention relates to a system and method for measuring low-temperature sealing specific pressure performance parameters of sealing materials. The safety and reliability of the injection pipeline can also be extended to other low-temperature medium delivery pipeline systems. Background technique [0002] Flange bolt connection is an important connection method for low temperature equipment or components in low temperature filling system. Due to the low temperature characteristics of liquid hydrogen, liquid oxygen, liquid nitrogen and other media, it is necessary to ensure that there is no leakage of low temperature medium during the filling process of low temperature medium. In order to ensure the reliable sealing of the flange at room temperature and low temperature, it is necessary to apply a certain pre-tightening force to the bolts to ensure that the gasket meets the requirements of the sealing specific pressure under various working conditions....
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
Login to view more IPC IPC(8): G01M3/08
CPCG01M3/086
Inventor 唐强张广孟黄玲艳何燚刘海飞张振华郭春立
Owner BEIJING INST OF SPACE LAUNCH TECH
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap