Gate detection auxiliary tool and gate horizontal roundness detection method
A technology of auxiliary tools and detection methods, which is applied in the direction of measuring devices, measuring instruments, surveying and navigation, etc., can solve the problems of construction progress impact, labor and time-consuming, detection accuracy impact, etc., to meet the construction progress, flexible station installation, and measurement convenient effect
Active Publication Date: 2021-08-27
CHINA NUCLEAR IND HUAXING CONSTR
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Problems solved by technology
For a long time, a special platform has been used to detect the roundness of the gate of the reactor building of a nuclear power plant. Time-consuming, detection accuracy is also affected
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[0027] The auxiliary tool for detecting gates and the method for detecting the roundness of gates placed in a flat position of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] Such as figure 2 and 3 As shown, in the roundness inspection of the gate of the reactor building in this embodiment, the diameter of the gate 4 is 8400mm, and the facade is installed on the containment with an inner diameter of 26.5m of the reactor building, and there is a difference of 335mm between the starting point and the middle point of the arc of the facade. When it is on the ground, only the middle part is on the ground. It is very inconvenient to measure the distance with a ruler in the traditional method of inspection. It is necessary to use a special platform to level and divide the center. After finding the center point, it can be measured by the center hanging wire inspection. And during the ins...
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Abstract
The invention relates to a gate detection auxiliary tool and a gate horizontal roundness detection method, and belongs to the technical field of nuclear power station construction. The method comprises the following steps of: setting a total station at any viewpoint in a gate, and performing measuring to obtain three-dimensional actual measurement coordinates of each detection point of the gate through a detection auxiliary tool; and calculating the actual position coordinates of the center of the gate, obtaining an actual radius through conversion, and performing comparing to obtain an error value as a detection result. With the gate detection auxiliary tool and the gate horizontal roundness detection method adopted, the problem of gate size quality inspection in a horizontal state is solved, an accurate detection result can be obtained, a basis is provided for adjustment of an actual position, erecting is flexible, measurement is convenient, space of other construction procedures is not occupied, and the requirement for optimization of the construction progress is met.
Description
technical field [0001] The invention belongs to the technical field of nuclear power plant construction, and relates to the detection of equipment gates, personnel gates and emergency gates of nuclear reactor plants, in particular to an auxiliary tool for gate detection and a method for detecting the roundness of the gate. Background technique [0002] The gate of the nuclear reactor building is a circular steel sleeve with a radius of 8400, 8300, 7400, 4300, 3650, 2650 and other specifications. The sealing performance is extremely important. The function of the gate is the passage of large equipment, and it is the passage of equipment in the plant during the construction period. It is closed during operation, and it is used about once a year, that is, to provide access for the equipment in the maintenance workshop to enter and exit the workshop. For a long time, a special platform has been used to detect the roundness of the gate of the reactor building of a nuclear power ...
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Login to View More IPC IPC(8): G01C15/00G01B21/20
CPCG01C15/00G01B21/20Y02E30/30
Inventor 单意志杨忠勇余世安郑自川钱伏华
Owner CHINA NUCLEAR IND HUAXING CONSTR