A test device for the relationship between tightening torque and angular displacement of pipe joints

Abstract

The invention discloses a test device for the relationship between tightening torque and angular displacement of a pipe joint, relates to the technical field of pipelines, and includes: a data acquisition device, a clamping transmission component, and a power component and angular displacement respectively connected to both ends of the clamping transmission component The measuring assembly, the power assembly and the angular displacement measuring assembly are connected to the data acquisition device respectively; the clamping transmission assembly includes: a clamping assembly and a transmission assembly, and the clamping assembly includes: a first frame and a sliding A support frame on a frame; transmission components include: connecting rods, connecting seats, conical rubber rings, springs and spring seats. This test device can liberate manpower, obtain accurate data of torque and angular displacement simultaneously and ensure reliable transmission.

Description

technical field [0001] The invention relates to the technical field of pipelines, in particular to a test device for the relationship between tightening torque and angular displacement of a pipe joint. Background technique [0002] Pipelines are widely used in machinery, construction, aviation, energy and other industries, mainly for oil and gas transportation, so the sealing performance of pipelines is particularly important. When tightening pipe joints, no matter what kind of control pretightening method is adopted, it is necessary to obtain more accurate data of torque and angular displacement to determine the torque surge point and torque steady point, and finally form a manual to guide the front-line operators. Therefore, Developing a device for accurately measuring the tightening torque and angular displacement of pipe joints to study the relationship between torque and angular displacement when the pipe joints are tightened can provide an important test basis for the ...

AI Technical Summary

Problems solved by technology

[0003] When existing scientific research institutes and enterprises obtain the torque and rotation angle data of pipe joints, most of them obtain them separately through simple devices, and their accuracy is relatively low

Especially when determining the torque surge point, rely on the hand feeling when tightening. When the tightening resistance becomes larger, record the angular displacement at the moment, and summarize the torque surge point through multiple sets of data; when it is necessary to tighten to a larger stable torque , because the operator is not strong enough to use an extension rod, it is troublesome to operate; and when obtaining the tightening angle, it is usually obtained through a mechanical device such as a dial

This greatly depends on the technical level of the operator, and the data obtained are scattered and not accurate enough

This makes the conclusion of the study not instructive for first-line operation

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