Apparatus for measuring crack arrest toughness of pipeline and its measuring method
A technology of measuring devices and pipelines, which is applied in the field of measurement, can solve problems such as the inseparability of test design, and achieve the effect of accurate measurement
Active Publication Date: 2016-08-10
BC P INC CHINA NAT PETROLEUM CORP +1
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Physical test results are often convincing and more intuitive, but reliable test results are inseparable from reasonable test methods and test design
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[0019] The specific embodiments provided by the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0020] See Figure 1-4 , An embodiment of the present invention provides a device for measuring pipeline crack arrest toughness, including: first gas storage 101, second gas storage 102, first pipeline group, second pipeline group, crack arrester 1, Crack-initiating pipe 2, initiating unit for cracking in the crack-initiating pipe 2 and the pipeline in the pipeline group, and a measuring unit for obtaining the measurement parameters of the crack arrest toughness of the pipeline in the pipeline group. Among them, the first pipeline group is placed between the first gas storage 101 and the crack initiating pipe 2; the second pipeline group is placed between the second gas storage 102 and the crack initiating pipe 2; The pipeline group, the first gas storage 101 and the second gas storage 102 are arranged in a centrally symmetr...
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Abstract
The invention discloses a device for measuring crack arrest toughness of pipelines and a measuring method thereof. The device comprises: a first gas storage, a second gas storage, at least three straight seam steel pipes, matching the number of straight seam steel pipes The spiral seam steel pipe, crack stopper, crack initiation pipe, detonation unit and measurement unit; the straight seam steel pipe is placed between the first gas storage and the crack initiation pipe; the spiral seam steel pipe is placed between the second gas storage and the crack initiation pipe and the straight seam steel pipe and the spiral seam steel pipe, the first gas storage and the second gas storage are respectively arranged in a centrally symmetrical structure with the opening pipe as the axis of symmetry; between the straight seam steel pipe and the first gas storage, Crack arresters are respectively installed between the spiral seam steel pipe and the second gas storage; the detonation unit is placed at the center above the crack initiation pipe; the measurement unit is placed at different parts of the steel pipe; and the measurement unit can realize communication with the external data processing terminal Carry out data signal transmission. The invention realizes the accurate measurement of the crack arrest toughness of the steel pipe, and has the characteristics of high measurement accuracy.
Description
Technical field [0001] The invention belongs to the technical field of measurement, and particularly relates to a device for measuring the crack arrest toughness of a pipeline and a measurement method thereof. Background technique [0002] Due to the rapid development of the national economy, the demand for energy, especially natural gas, has increased rapidly. In order to improve pipeline transmission efficiency and reduce construction costs, high-grade steel, large-diameter, high-pressure transmission has become the development trend of natural gas pipelines. The long-range propagation of ductile cracks is one of the main modes of failure of natural gas pipelines, often causing catastrophic consequences. In order to avoid the long-distance propagation of ductile cracks in natural gas pipelines, it is necessary to determine a reasonable pipeline crack arrest toughness before the pipeline is laid to ensure that the cracks can be arrested within a certain length. The growth or a...
Claims
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IPC IPC(8): G01N3/28
Inventor 李洋张伟卫王鹏李鹤吉玲康池强霍春勇冯耀荣
Owner BC P INC CHINA NAT PETROLEUM CORP