Alignment positioning method in installation of equipment foundation inner vertical buried tube

Abstract

The invention relates to an alignment positioning method in installation of equipment foundation inner vertical buried tube. Firstly, a secondary center centring tool is made by processing, a cap is cut in size of 1-2cm larger than the outer diameter of the vertical buried tube, an embedded or straddle type cap is processed, specification of a steel tube used for being matched with the lower partof the cap is determined, the cap and lower tube are welded all around in group, finishing is carried out, a cross line is drawn at the center of the processed cap to be reference during measurement,then the secondary center centring tool is used for positioning, the cap is covered at the upper edge of a sleeve, the center line is controlled and longitudinal and horizontal center lines are hung at the upper part of an embedded tube, a plumb is hung on the center line, the plumb and the cross line at the center of the cap at the upper part of the embedded tube are utilized to detect deviationvalue of the center of the buried tube, the center position of the buried tube is finely adjusted, repetition measurement is carried out, and fixing is carried out in time while meeting the requirement, thus the center positioning operation of the embedded tube is completed. The invention realizes center positioning of the embedded tube by the cross at the center of the cap on the embedded tube, has high alignment positioning efficiency and can greatly speed up the construction.

Description

technical field [0001] The invention relates to a method for aligning and measuring vertically buried pipes in equipment foundations by using auxiliary tools. Background technique [0002] With the continuous advancement of metallurgical industry technology, the installation of various large-scale metallurgical equipment is becoming more and more common. Due to the consideration of dynamic load factors during equipment operation, the use of anchor bolts tends to be replaceable sleeve bolts and T-bolts. , especially in the construction of equipment foundation and coke oven foundation roof, the installation of this type of vertical buried pipe (embedded bolt sleeve or embedded lower nozzle) is especially common, and the installation accuracy is generally required to be relatively high. Due to the construction of the equipment foundation, vertical buried pipes (such as sleeves, lower nozzles, etc.) need to be installed and fixed first, and once the foundation is poured, if the ...

AI Technical Summary

Problems solved by technology

Due to the construction of the equipment foundation, vertical buried pipes (such as sleeves, lower nozzles, etc.) need to be installed and fixed first, and once the foundation is poured, if the center deviation of the bolt sleeve or lower nozzle exceeds the design requirements, it is very difficult to rework , even if it is reworked, it often leaves hidden dangers to the structural safety of the equipment foundation

Therefore, the construction unit pays special attention to the installation of such vertical buried pipes. However, in the actual alignment center positioning detection, due to the hollow pipe and the lack of reference objects, there is often no effective and accurate measurement method, which directly affects the vertical pipe. Final installation accuracy to buried pipe

[0003] For the installation of high-precision vertical buried pipes, the conventional detection method is as follows: Hang the horizontal and vertical centerlines above the pre-embedded pipes that are initially centered and fixed, and then use auxiliary tools such as steel rulers to measure, because the pipes are hollow and lack reference Objects have a great influence on each other during measurement, and often have to be repeated many times before they can be completely accurately aligned, which is labor-intensive and time-consuming, and the efficiency is very low

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