Gauging gauge for component fuel rod gap and using method
A fuel rod and gap technology, applied in the direction of mechanical gap measurement, etc., can solve the problems of missing measurement data, insufficient measurement data, and inability to measure deep inside, and achieve the effect of convenient operation and small measurement error.
Active Publication Date: 2019-11-22
CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND +1
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Problems solved by technology
[0002] When the component factory produces the fuel assembly, the gap between the fuel rod and the lower pipe seat in the assembly is measured using a feeler gauge. When the gap between the fuel rod near the outer side and the lower pipe seat is larger than the inner gap, the feeler gauge can go deep inside to measure ;However, when the gap on the outside is smaller than the gap on the inside, the feeler gauge can only measure the gap on the outside, but not deep inside
This may result in insufficient measurement data, or even omission of measurement data on the inside
Method used
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[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0038] Such as Figure 1-2 The fuel rod gap measuring gauge of a component shown includes a handle 1, a limit block 2, a connecting screw 3, a connecting pin 4, a simulated lower pipe seat 5, a simulated lower pipe seat reference plate 6, a positioning pin guide sleeve 7, a positioning pin Pin 8, gap measuring pin 9, gap measuring pin limit sleeve 10, instrument tube 11 and guide tube 12.
[0039] The simulated lower socket 5 is in the shape of a cuboid, including a front surface, a rear surface, an upper side, a lower side, a left side and a right side. A handle 1 is provided at the central position of the upper side of the simulated lower pipe seat 5, which is a hand-holding position when installing and transferring the fuel rod gap measuring gauge of the assembly. Two limit blocks 2 are symmetrically arranged on the upper side of...
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The invention relates to the field of dimensional measurement and particularly discloses a clearance measurement gauge for an assembly fuel rod and a use method. Holes are formed in a simulated lower tube base and a simulated lower tube base datum plate; clearance measurement dowels are clamped between the simulated lower tube base and the simulated lower tube base datum plate, small ends of the clearance measurement dowels are pushed by hand in the direction of the to-be-detected assembly fuel rod until all the clearance measurement dowels cannot be pushed, and the relative positions between the small ends of the clearance measurement dowels and the rear surface of the simulated lower tube base are observed to judge whether clearance measurement is qualified. With the adoption of the device, the clearance size of all to-be-detected fuel rods can be measured directly, the actually measured value of clearance between the fuel rod and the lower tube base can be indirectly measured by measuring the protrusion of the small ends of the clearance measurement dowels according to requirements, operation is convenient, and measurement errors are small.
Description
technical field [0001] The invention belongs to the field of dimension measurement, and in particular relates to a gauge for measuring the gap between component fuel rods and its use method. Background technique [0002] When the component factory produces the fuel assembly, the gap between the fuel rod and the lower pipe seat in the assembly is measured using a feeler gauge. When the gap between the fuel rod near the outer side and the lower pipe seat is larger than the inner gap, the feeler gauge can go deep inside to measure ; However, when the gap on the outside is smaller than the gap on the inside, the feeler gauge can only measure the gap on the outside, but not deep inside. This may result in insufficient measurement data, or even omit the measurement data of the inner side. Contents of the invention [0003] The object of the present invention is to provide a gauge for measuring the gap between the fuel rods of the component and its use method, which can improve ...
Claims
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IPC IPC(8): G01B5/16
CPCG01B5/16
Inventor 王磊钟福波高玉娟张丽琴张春光暴春玲王芳李洪刚李建中
Owner CHINA NUCLEAR BAOTOU GUANGHUA CHEM IND