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Straight welded pipe millet-shaped measuring apparatus and method

A technology of straight seam welded pipe and measuring device, which is applied in the direction of mechanical counter/curvature measurement, etc., can solve problems such as inability to measure, and achieve the effect of convenient operation and maintenance and high numerical accuracy

Active Publication Date: 2008-09-17
BAOSHAN IRON & STEEL CO LTD
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AI Technical Summary

Problems solved by technology

[0005] Due to the differences in the principle of pipe making and the different pipe diameters, the various methods for measuring the shape of seamless steel pipes and high-frequency resistance welding (ERW) medium-diameter welded pipes cannot be used for longitudinal submerged arc welding (UOE) large-diameter welded pipes. Chestnut on both sides of the weld to measure

Method used

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  • Straight welded pipe millet-shaped measuring apparatus and method
  • Straight welded pipe millet-shaped measuring apparatus and method
  • Straight welded pipe millet-shaped measuring apparatus and method

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Embodiment Construction

[0023] By definition, a chestnut shape is the deviation of an actual irregular shape from an ideal circular arc under certain conditions. Therefore, simulating the theoretical shape of a section of circular arc of steel pipes with different outer diameters and collecting the actual shape are the main objects of research. Accordingly, the measuring device of the present invention is composed of a measuring plate and a template, which are respectively used for collecting the actual shape and simulating the theoretical arc.

[0024] Only one kind of measuring board is needed, which is used to collect the actual shape of the chestnut shape of the steel pipe. figure 2 (a) is a schematic diagram of the structure of the measuring board, figure 2 (b) for figure 2 (a) Schematic diagram of looking up. As shown in the figure, the measurement board 1 includes a main board 11 , a top board 13 , a thimble 16 , and a clamping board 17 .

[0025] There are several guide slots 14 on the...

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Abstract

The invention relates to the metering equipment of a chestnut type straight seam welded pipe and the method, the metering equipment of the chestnut type straight seam welded pipe comprises a surveying board (1) and a template (2); the surveying board (1)consists a motherboard (11), a roof (13), a thimble (16), a clamp board (17), and a guidance branch roller (110), wherein, at least 3 guidance slots (14) are arranged on the motherboard (11), a spring (15) and the thimble (16) are arranged in the guidance slot (14), the guidance branch roller(110) is arranged in a branch roller guide slot (113); the template (2) includes a soleplate upper part (22), a soleplate lower part (23), a localization guild hole (26), a standard circular arc (21) is taken as the boundary of the soleplate upper part (22) and the soleplate lower part (23), and the template on (2) is provided with a central graduation line (24). When using the metering equipment of the chestnut type straight seam welded pipe and the method of the invention, the actual anomalous shape can be gathered accurately, the numerical precision of the contrast surveying are high enough, and the operation and the maintenance are also convenient.

Description

technical field [0001] The invention relates to a straight seam welded pipe, in particular to a device and method for measuring the radially irregular shape of the weld seam of the straight seam welded pipe. Background technique [0002] With the continuous popularization and deepening of oil and natural gas development and utilization worldwide, the exploitation of oil and gas resources has gradually shifted to remote land and ocean areas with harsh environments. In foreign countries, with the improvement of technical requirements, straight seam submerged arc welded pipe (LSAW) has become the first choice for the main pipeline of various pipeline projects. In the famous "West-to-East Gas Pipeline" pipeline project in China, 14% of the longitudinal submerged arc welded pipes used in the second, third and fourth types of areas are JCOE welded pipes (one of the LSAW welded pipes), and the rest are all UOE Welded pipe (one of LSAW welded pipes). As the service conditions are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B5/20
Inventor 余大典王啸修裘甦强郭胜陆勋
Owner BAOSHAN IRON & STEEL CO LTD
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