Pipeline flange screw hole positioning and measurement device

Abstract

The invention discloses a pipeline flange screw hole positioning and measurement device. The device comprises a positioning ruler; the positioning ruler is provided with at least three diverging ends;the upper surface of the positioning ruler is provided with coordinate lines along the diverging ends respectively; the scales of all the coordinate lines are consistent; the origins of all the coordinate lines are overlapped; the positioning ruler is further provided with a columnar body of which the lower end protrudes out from the lower surface of the positioning ruler; a groove is formed in the upper portion of the columnar body; the bottom surface of the groove is flush with the lower surface of the positioning ruler; the bottom surface of the groove is provided with intersection lines;the lower surface of the positioning ruler is attached to the surface of a pipeline flange and moves; by means of the principle that distances from the center of a circle to any point on the circle are equal, when the scale readings of each of the coordinate lines at the edge of a screw hole are equal, the origins of the coordinate lines fall on the central axis of the screw hole; since the vertical projections of the origins of the coordinate lines at the bottom surface of the groove are overlapped with the intersection point of the intersection lines, the intersection point of the intersection lines is the center position of the screw hole on the surface of the flange, the center of the screw hole of the pipeline flange is not empty, and therefore, collection and measurement can be facilitated, and measurement accuracy can be improved.

Description

technical field [0001] The invention relates to the technical field of positioning and measurement, in particular to a positioning and measuring device for screw holes in pipeline flanges. Background technique [0002] At present, factory module manufacturing and civil engineering (such as roller coaster brackets, etc.) in marine petrochemical industry mostly involve flange connection and pipeline installation. These modules and pipeline brackets are large or have special-shaped structures, which are inconvenient for long-distance transportation. Manufacture and process modules or sub-bars, and install them on site. Therefore, during installation, it is particularly important to locate the flange screw hole size of the pipeline or special-shaped pipeline support, but the center of the flange screw hole is empty, and the total station cannot collect the center coordinates of the flange screw hole during positioning measurement, which is used for the positioning measurement of...

AI Technical Summary

Problems solved by technology

Therefore, during installation, it is particularly important to locate the flange screw hole size of the pipeline or special-shaped pipeline support, but the center of the flange screw hole is empty, and the total station cannot collect the center coordinates of the flange screw hole during positioning measurement, which is used for the positioning measurement of the pipeline flange screw hole It brings great inconvenience, and at the same time greatly affects the accuracy of positioning measurement, posing a threat to the quality of project engineering

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