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

A Design Method for Glass Fiber Composite Crack Stopper Used in x100 Gas Pipeline

A glass fiber and composite material technology, applied in the direction of pipeline damage/wear prevention, pipeline protection, pipeline system, etc., can solve the problems of limiting the application of glass fiber composite material crack arrester, lack of design methods, etc., to achieve large-scale application, The design process is simple and easy to implement, and the effect of improving design accuracy

Active Publication Date: 2021-03-30
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when glass fiber composites are used as crack arresters, there is still a lack of design methods and specifications, which greatly limits the application of glass fiber composite crack arresters
[0006] In addition, the crack arrester should promote flexible crack arrest. Sudden crack arrest will cause the crack to ring off when it enters the crack arrester. serious consequences to the surrounding environment

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
  • A Design Method for Glass Fiber Composite Crack Stopper Used in x100 Gas Pipeline
  • A Design Method for Glass Fiber Composite Crack Stopper Used in x100 Gas Pipeline
  • A Design Method for Glass Fiber Composite Crack Stopper Used in x100 Gas Pipeline

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, where the schematic embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

[0056] The present invention is used for the design method of glass fiber composite crack stopper of X100 gas transmission pipeline, comprises the following steps:

[0057] 1) Calculate the pipe stress ratio according to the pipe structure and stress parameters;

[0058] Calculate according to the following formula:

[0059]

[0060] Among them, F is the stress ratio of the pipeline; P is the internal pressure of the pipeline; D is the diameter of the pipeline; R t0.5 is the yield strength of X100 steel pipe, and t is the pipe wall thickness. R t0.5 It shall be obtained by steel pipe transverse round bar tensile test according to ASTM A370.

[0061] 2) According to the pipeline tem...

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

PropertyMeasurementUnit
elastic modulusaaaaaaaaaa
lengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a design method of a glass fiber composite material anti-cracking device for an X100 gas pipeline. The design method comprises the following steps of calculating a pipeline stress ratio according to a pipeline structure and stress parameters; calculating a natural gas pressure-reducing wave by adopting a BWRS state equation; judging whether a pressure-reducing wave platformexists or not according to the natural gas pressure-reducing wave curve; determining the thickness of the anti-cracking device under different conditions according to the judging results of the pipeline stress ratio and the natural gas pressure-reducing wave platform; and determining the length of the anti-cracking device and the grooves at the two ends of the anti-cracking device according to the thickness of the anti-cracking device under the different conditions. Meanwhile, when the mechanical property of the glass fiber composite material anti-cracking device is designed, three mechanicalproperty parameters of tensile strength, elasticity modulus and ultimate strain are specified. According to the method, the long-range expansion of ductile cracks in the X100 pipeline can be effectively prevented, and flexible anti-cracking of the ductile long-range expanded cracks can be realized.

Description

technical field [0001] The invention belongs to the field of fracture control of natural gas transmission pipelines, and relates to a flexible crack arrest method for preventing long-distance extension of ductile cracks in X100 gas transmission pipelines (including rich gas and lean gas), in particular to a glass fiber composite material crack arrester design method. Background technique [0002] Natural gas is a kind of clean energy, and it is also a flammable and explosive dangerous medium. It is usually transported by pipeline. Pipeline transportation has the characteristics of large transportation volume, continuous, rapid, economical, safe and reliable. During the long-term service of the pipeline, due to the effects of formation pressure, corrosion, fatigue, external mechanical damage, etc., accidents such as pipeline cracking and leakage should occur. Once the high-pressure natural gas pipeline cracks and expands for a long distance, it will cause huge disasters and ...

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): F16L57/02F17D5/00
CPCF16L57/02F17D5/005
Inventor 李鹤张伟卫杨坤胡美娟霍春勇马秋荣马卫锋李炎华封辉杨放
Owner BC P INC CHINA NAT PETROLEUM CORP
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