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Measuring device for fracture speed of whole-size gas bursting test of gas conveying steel pipe

A blasting test and fracture velocity technology, applied in the field of explosion measurement, can solve problems such as failure to correctly reflect crack arrest performance, and achieve the effects of reliable test results, elimination of interference factors, and efficient and safe data transmission

Inactive Publication Date: 2016-04-20
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for modern high-strength and high-toughness pipeline steel pipes, especially X80 and above pipeline steels, existing crack arrest prediction methods have limitations and cannot correctly reflect the crack arrest performance of this high-strength and toughness material.

Method used

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  • Measuring device for fracture speed of whole-size gas bursting test of gas conveying steel pipe
  • Measuring device for fracture speed of whole-size gas bursting test of gas conveying steel pipe
  • Measuring device for fracture speed of whole-size gas bursting test of gas conveying steel pipe

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Embodiment Construction

[0026] The present invention is described in further detail below in conjunction with accompanying drawing:

[0027] see figure 1 , the gas transmission steel pipe full-scale gas explosion test fracture velocity measuring device disclosed in the present invention comprises an explosion initiation device 1 arranged at the center of the gas transmission steel pipe to be tested, and a number of blasting devices arranged on the outer wall of the upper half of the circumference of the gas transmission steel pipe to be tested. Timeline 2; and each timeline 2 is connected in series with an external resistor and a constant voltage power supply to form a closed test circuit; signal lines for collecting voltage signals are also provided at both ends of each timeline, and the signal lines are connected to the data acquisition system , the data acquisition system is connected to the processing terminal.

[0028] see figure 2 , is the connection structure of the timeline test circuit. D...

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Abstract

The invention discloses a measuring device for a fracture speed of a whole-size gas bursting test of a gas conveying steel pipe and belongs to the technical field of explosion measurement. The measuring device comprises a bursting starting device arranged at the center of a gas conveying steel pipe to be measured, and a plurality of timelines which are distributed on an outer wall of an upper half part of the circumference of the gas conveying steel pipe to be measured, wherein each timeline is connected with an external resistor and a constant-voltage power supply in series to form a closed testing circuit; signal lines for acquiring a voltage signal are further arranged at the two ends of each timeline; the signal lines are connected to a data acquisition system; and the data acquisition system is connected with a processing terminal. The measuring device provided by the invention is simple in structure and easy to manufacture; a step-function signal generated by the fracture of the timelines is obvious, a testing result is reliable and the safety is relatively good; and the measuring device can be used for effectively measuring and analyzing the speed of expanding cracks along the pipeline of the gas conveying steel pipe.

Description

technical field [0001] The invention belongs to the technical field of explosion measurement, and relates to a fracture velocity measuring device for a full-scale gas explosion test of a gas transmission steel pipe. Background technique [0002] Natural gas is a kind of clean energy, and it is also a flammable and explosive dangerous medium. Once the high-pressure natural gas pipeline cracks for a long time, it will cause great disasters and losses. Therefore, the safety of the pipeline must be guaranteed. In order to improve the economy of pipeline transportation, the development trend of natural gas pipelines is high pressure, large diameter, large wall thickness, and large transmission capacity, and the steel pipes used are also developing in the direction of high steel grade (high strength grade). Pipeline steel pipes for natural gas pipelines in my country have developed very rapidly in recent years. X70-grade steel pipes have been successfully applied in the first-line...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/313G01N3/06
CPCG01N3/313G01N3/066G01N2203/0066G01N2203/0274G01N2203/0617
Inventor 李鹤张伟卫胡美娟霍春勇杨坤王海涛吉玲康李炎华陈宏远齐丽华
Owner BC P INC CHINA NAT PETROLEUM CORP
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