An oil and gas pipeline restraint simulation device and its testing method

A technology for oil and gas pipelines and simulation devices, which is applied to tubular objects, other household appliances, applications, etc., can solve the problem of not having the ability to simulate large restraint and restraint stress, unable to simulate the restraint degree of oil and gas pipelines, and inability to simulate large restraint stress and other problems, to achieve the effect of convenient welding operation, stable installation and easy positioning

Active Publication Date: 2016-12-07
GUANGDONG DAPENG LNG COMPANY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned restraint welding cold crack test device can only be used for the simulation of small-sized plate welding cold cracks, and cannot simulate the degree of restraint of oil and gas pipelines with a certain diameter or length, so it does not have the ability to simulate a large degree of restraint and restraint stress. When faced with the welding of oil and gas pipelines, the large restraint stress cannot be simulated, which leads to the defect of small application range

Method used

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  • An oil and gas pipeline restraint simulation device and its testing method
  • An oil and gas pipeline restraint simulation device and its testing method
  • An oil and gas pipeline restraint simulation device and its testing method

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Experimental program
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Effect test

Embodiment 1

[0056] see figure 2 , an oil and gas pipeline restraint simulation device provided in this embodiment, including:

[0057] The first fixed plate 11 and the second fixed plate 12 arranged oppositely;

[0058] The rigid restraint bracket 2 is arranged between the first fixed plate 11 and the second fixed plate 12, and the axis of the rigid restraint bracket 2 is perpendicular to the opposite surfaces of the first fixed plate 11 and the second fixed plate 12;

[0059] The first sample tube 31, one end of which is arranged on the side opposite to the first fixed plate 11 and the second fixed plate 12;

[0060] The second sample pipe fitting 32, one end of which is arranged on the side of the second fixed plate 12 opposite to the first fixed plate 11;

[0061] The other end of the first sample pipe 31 is welded to the other end of the second sample pipe 32 to form a weld 4 .

[0062] The aforementioned oil and gas pipeline restraint simulation device is provided with a rigid re...

Embodiment 2

[0074] see Figure 7 , which is a flow chart of a simulation test method for restraint of oil and gas pipelines provided in this embodiment, which mainly includes the following steps:

[0075] Step S100, setting the rigid restraint bracket. Between the first fixed plate 11 and the second fixed plate 12 arranged oppositely, a rigid restraint bracket 2 for connecting the first fixed plate 11 and the second fixed plate 12 is fixed, such as image 3 shown.

[0076] Step S200, welding the sample pipe fittings, respectively fixing one end of the first sample pipe fitting 31 and one end of the second sample pipe fitting 32 on the opposite side of the first fixing plate 11 and the second fixing plate 12; welding the first sample The other end of pipe fitting 31 and the other end of second sample pipe fitting 32 form weld seam 4, as figure 2 shown.

[0077] Step S300, test section cutting. Cutting at preset length positions on both sides of the weld 4 to obtain the test section 5...

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Abstract

The invention provides an oil-gas pipeline restraint simulator and a testing method thereof. The oil-gas pipeline restraint simulator comprises a first fixing plate, a second fixing plate, a rigidity restraint support, a first sample pipe fitting, and a second sample fitting, wherein the first fixing plate and the second fixing plate are oppositely arranged, the rigidity restraint support, the first sample fitting and the second sample fitting are arranged between the first fixing plate and the second fixing plate. The testing method includes setting the rigidity restraint support, welding the sample pipe fittings, cutting the testing sections, and testing data. As shape and size of the sample pipe fittings can be tested according to the full size of the oil-gas pipeline in actual operation, size is free of limit, and through the simple pipe fitting welding structure, restraint simulation testing of the oil-gas pipeline can be realized. The oil-gas pipeline restraint simulator can simulate high restraint and restraint stress and is wider in application range and more accurate in testing.

Description

technical field [0001] The invention relates to the field of oil and gas pipeline welding, in particular to an oil and gas pipeline restraint simulation device and a testing method thereof. Background technique [0002] The degree of restraint indicates the degree of restraint of the weldment during welding, and is an important mechanical parameter for the quantitative study of welding cracks. With the rapid development of my country's oil and gas pipeline projects, the production of pipeline steel has been greatly increased. A large number of welding work is involved in oil and gas pipelines. The crack problem caused by excessive welding restraint in the welding process is becoming more and more serious. Therefore, In order to improve the problem of cracks in the welding process of oil and gas pipelines, it is particularly important to test the welding restraint degree of oil and gas pipelines during the construction period. [0003] Such as figure 1 As shown, the Chinese ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K31/12
CPCB23K31/125B23K2101/06
Inventor 王良军吴培葵李强刘新凌
Owner GUANGDONG DAPENG LNG COMPANY
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