A device and method for measuring the verticality of a deep hole in a tube sheet
A measurement method and a technology of a measurement device, which are applied in the direction of a measurement device, a mechanical measurement device, and a mechanical device, can solve the problems of restricting the progress of manufacturing and inspection of heat exchangers, the inability to complete inspections independently, and the large ratio of hole depth to hole diameter. Achieve the effects of avoiding a large number of unqualified verticality of deep holes, less difficulty in measurement implementation, and shorter detection time
Active Publication Date: 2021-11-26
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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Moreover, the number of tube plate holes is large (as many as 20,000, as few as 8,000), the processing precision is high, the ratio of hole depth to hole diameter is large, and processing is difficult, which seriously restricts the progress of manufacturing and inspection of heat exchangers.
Nuclear power heat exchangers have a large number of tube holes. From the perspective of quality control, it is urgent to carry out self-inspection during processing to avoid a large number of unqualified holes. To check the verticality of the tube plate hole, one person cannot complete the inspection independently, and two people are required to cooperate, which has the disadvantages of low efficiency, long detection time, difficult measurement implementation, and low measurement accuracy
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[0046] The present invention will be further described in detail through the drawings and examples below. Through these descriptions, the features and advantages of the present invention will become more apparent.
[0047] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments. While various aspects of the embodiments are shown in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
[0048] The deep hole of the tube plate of nuclear power heat exchanger is an important manufacturing process of the heat exchanger. The tube plate hole is the weak link of the heat exchanger, especially the verticality of the tube hole, which directly affects the size of the secondary side hole bridge, which will directly affect the to the quality of the heat exchanger. Therefore...
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The invention provides a device for measuring verticality of deep holes in a tube sheet. The measuring device includes a measuring arm (1), a positioning shaft (2), a limit pin (4) and a dial indicator (6), and the positioning shaft (2 ), a limit pin (4) and a dial indicator (6) are installed on the measuring arm (1), and the limit pin (4) is installed between the positioning shaft (2) and the dial indicator (6) . The device for measuring the verticality of the tube sheet deep hole in the present invention can not only quickly align with each measured deep hole for measurement during the drilling interval, so as to ensure that the verticality meets the requirements, greatly improve the effectiveness of the inspection, and avoid a large number of The occurrence of unqualified verticality of deep holes, meanwhile, the invention also solves the difficult problem that the edge holes of the tube plate cannot be measured.
Description
technical field [0001] The invention relates to the precise measurement of verticality of deep holes, in particular to a tool for measuring verticality of deep holes in tube plates. Background technique [0002] The deep hole of the tube plate of the nuclear power heat exchanger is an important manufacturing process of the heat exchanger. The tube plate hole is the weak link of the heat exchanger. The verticality of the tube hole size directly affects the size of the secondary side hole bridge, which is related to the heat exchanger. quality. Moreover, the number of tube plate holes is large (as many as 20,000, as few as 8,000), the processing precision is high, the ratio of hole depth to hole diameter is large, and processing is difficult, which seriously restricts the progress of manufacturing and inspection of heat exchangers. Nuclear power heat exchangers have a large number of tube holes. From the perspective of quality control, it is urgent to carry out self-inspectio...
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IPC IPC(8): G01B5/245
CPCG01B5/245G01B21/042
Inventor 徐向华路郅远李光伟胡贵红李宏艳席霞
Owner HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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