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Tube plate deep-hole perpendicularity measuring device and measuring method

A measuring device and verticality technology, applied in the direction of measuring device, mechanical measuring device, using mechanical device, etc., can solve the problems of restricting the progress of manufacturing and inspection of heat exchangers, unable to complete the inspection independently, and difficult to implement the measurement, to avoid The verticality of a large number of deep holes is unqualified, the measurement implementation difficulty is small, and the inspection efficiency is improved.

Active Publication Date: 2020-04-10
HARBIN ELECTRIC CORP QINHUANGDAO HEAVY EQUIP
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Problems solved by technology

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

Method used

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  • Tube plate deep-hole perpendicularity measuring device and measuring method
  • Tube plate deep-hole perpendicularity measuring device and measuring method
  • Tube plate deep-hole perpendicularity measuring device and measuring method

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Embodiment Construction

[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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Abstract

The invention provides a tube plate deep-hole perpendicularity measuring device which comprises a measuring arm (1), a locating shaft (2), a stop pin (4) and a dial indicator (6), wherein the locatingshaft (2), the stop pin (4) and the dial indicator (6) are installed on the measuring arm (1), and the stop pin (4) is installed between the locating shaft (2) and the dial indicator (6). According to the tube plate deep-hole perpendicularity measuring device, each measured deep hole can be rapidly aligned for measurement in the drilling intermission so as to ensure that the perpendicularity meets the requirement, greatly improve the effectiveness of inspection and avoid the occurrence of unqualified perpendicularity of a large number of deep holes; and meanwhile, the problem that the marginal holes of a tube plate cannot be measured is also solved.

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...

Claims

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Application Information

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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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