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A method for checking the parallelism of pipeline installation

A pipeline installation and inspection method technology, applied in the direction of reducing greenhouse gases, climate sustainability, reactors, etc., can solve problems such as easy to touch, troublesome steel bar binding, and large structures

Active Publication Date: 2021-05-11
CHINA NUCLEAR IND HUAXING CONSTR
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the deficiencies in the prior art, the present invention provides a method for checking the parallelism of pipeline installation, which is a method for checking the parallelism of the complex spatial three-dimensional structure on both sides of the pipeline installed in the wall, and overcomes the existing needs Prefabricated and reinforced in advance, the structure is huge, the reinforcement is troublesome to bind, and it is easy to touch, etc., flexible inspection and convenient measurement

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  • A method for checking the parallelism of pipeline installation
  • A method for checking the parallelism of pipeline installation
  • A method for checking the parallelism of pipeline installation

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Embodiment Construction

[0036]The invention will now be described in further detail with reference to the drawings.

[0037]In an embodiment, the cavity ring wall of a nuclear power plant nuclear reactor plant has eight sets of thrust slots. Each set of push-pull grooves has a pipe, each pipeline consists of different pipe diameters, and the pipeline is large. The tube is located outside the ring wall. It is high for its concentricity and parallelism. It is required to deviate within 1mm. The paralleter requirement is within 1 mm, and the eight sets of push slots are 16 pipes, divided into two specifications, tubes Long 1320mm (image 3 , I, III, IV, V, VII, VIII tube) and 1488mm (image 3 , II, VI tube).

[0038]AppendFigure 1-4Distanceimage 3 In the middle, Q1 ~ Q8 is the starting point in the pipeline direction, and the coordinate can be calculated by the center and radius; 1 to 32 is the pipeline checkpoint, 33 is a full station.Figure 4 The middle 1 (5, 9, 13, 17, 21, 25, 29) is the inner inspection point in ...

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Abstract

The invention discloses a method for checking the parallelism of pipeline installation. The steps are as follows: S1 making a pipeline installation casing; S2 making two circular pipeline inspection molds; setting the elevation of the total station and the known points of the rear view; Point coordinate measurement; S5 calculates the deviation value of the casing; S6 adjusts the location and elevation of the casing; S7 retests after welding and fixing; S8 repeats steps S4 to S7; 2. Detect the three-dimensional coordinates of the center point of the mold; S10 calculate the deviation value of the large pipe; S11 adjust the position and elevation of the large pipe; S12 retest after welding and fixing; The invention overcomes the existing deficiencies of needing prefabrication and reinforcement in advance, huge structure body, troublesome steel bar tying, easy bumping and the like, and makes inspection flexible and measurement convenient.

Description

Technical field[0001]The present invention belongs to the field of civil construction technology, and specific relates to a parallelial inspection method for pipe installation.Background technique[0002]The rockhouse wall of the nuclear reactor plant is provided with eight sets of thrust slots. Each set of thrust grooves consists of a sleeve welding of different pipe diameters arranged in two, and the sleeve is welded by two pipes. The degree and parallelism requirements are high, the concentricity and parallelism requirements are within 1 mm, and each set of push-pull grooves have a pipe, eight sets of push-pull slots a total of 16 pipes, divided into two specifications, tube lengths of 1320mm and 1488mm. At present, in order to ensure concentricity and parallelism, first in the workshop prefabricated installation, after the examination is complete, the support is fixed, the structure is huge, before the steel bars are laid, the steel is tied, and the reinforcement is required, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21C17/017
CPCG21C17/017Y02E30/30
Inventor 单意志秦亚林余世安郑自川钱伏华
Owner CHINA NUCLEAR IND HUAXING CONSTR
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