A follow-up pipeline three-way displacement measurement method

Abstract

The invention discloses a three-way displacement measurement method of a follow-up pipeline, comprising the following steps: 1) when the pipeline is in an initial state, calculate the coordinates of the follow-up point C; 2) when the pipeline is in the initial state, measure the displacement measuring point of the pipeline The distance from A to the rotation point H; 3) When the pipe position changes, that is, the pipe displacement measuring point moves from the A position to the B position, and the follow-up point moves from the C position to the D position. The position of the point remains unchanged, and the distance between the follow-up point and the rotation point is unchanged. At this time, the distances from the follow-up point D to the fixed point F, fixed point G, fixed point E and fixed point O are measured respectively, and the follow-up point is obtained. The coordinates of point D; 4) When the position of the pipeline changes, measure the distance between the pipeline displacement measuring point B and the rotation point H, and set the three-way displacement in the process of moving the pipeline displacement measuring point from point A to point B as ΔX. , ΔY, ΔZ, this method can realize accurate follow-up monitoring of pipeline displacement.

Description

technical field [0001] The invention belongs to the technical field of pipeline displacement measurement, and relates to a follow-up pipeline three-dimensional displacement measurement method. Background technique [0002] A pipeline is a transportation system that connects two or more devices to transport media, and is widely used in thermal power plants, nuclear power plants, petrochemicals and other energy industries. During the service process, under the action of mechanical load, thermal load and random load, the pipeline will produce corresponding displacement. If there is a deviation between the actual displacement value of the pipeline and the design displacement value, the stress state of the pipeline, the drainage slope of the pipeline, the thrust of the pipeline port, etc. will all be inconsistent with the original design, and in severe cases, the pipeline stress will exceed the standard, the drainage is not smooth, and the port thrust is abnormal, etc. problems,...

AI Technical Summary

Problems solved by technology

If there is a deviation between the actual displacement value of the pipeline and the design displacement value, the stress state of the pipeline, the drainage slope of the pipeline, and the thrust of the pipeline port will all be inconsistent with the original design. problems that endanger the safe operation of the equipment

The traditional pipeline expansion indicator adopts the principle of mechanical linkage, which transmits the displacement of the pipeline to the expansion indicator at a ratio of 1:1. There is no displacement scaling function, the application limitations are relatively large, and the measurement accuracy is low. It is only applicable to the displacement direction of the pipeline. It is known that it is only suitable to be arranged in places with large local displacements, and it is impossible to achieve the purpose of accurate monitoring of the overall displacement of the pipeline by adding measuring points

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