SU157503A1 - - Google Patents
Info
- Publication number
- SU157503A1 SU157503A1 SU809399A SU809399A SU157503A1 SU 157503 A1 SU157503 A1 SU 157503A1 SU 809399 A SU809399 A SU 809399A SU 809399 A SU809399 A SU 809399A SU 157503 A1 SU157503 A1 SU 157503A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- sensor
- diaphragm
- product
- monitored
- wall thickness
- Prior art date
Links
- 238000009434 installation Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
Description
Известны устройства дл контрол толщины стенок изделий из немагнитных материалов, содерлсащие датчик, устанавливаемый с одной стороны контролируемой , .и нодвижный элемент, расиолагаемый ио другую ее сторону. Погрешности установки иодвижного элемента датчика в известных устройствах снижают точность и надежность контрол .Devices are known for monitoring the wall thickness of articles made of non-magnetic materials, comprising a sensor mounted on one side of the monitored, and a fixed element on the other side. The installation errors of the sensor element in known devices reduce the accuracy and reliability of control.
Дл устранени этого недостатка в предложенном устройстве нодвижный элемент датчика выполнен в виде гибко токопровод щей диафрагмы, нрижимаемой к контрол 1руемой поверхности сжатым воздухом .To eliminate this drawback in the proposed device, the moving element of the sensor is made in the form of a flexible conductive diaphragm applied to the control surface by compressed air.
На фиг. 1 изображено диафрагменное пневматическое устройство дл контрол толщины стеиок труб из немагнитны.х материалов; на фиг. 2 - установка дл контрол толщины стенок труб с помощью диафрагменного пневматического устройства.FIG. 1 depicts a pneumatic diaphragm device for controlling the thickness of non-magnetic pipe steayok; in fig. 2 — Installation for controlling the wall thickness of pipes using a pneumatic diaphragm device.
При контроле датчик / располагаетс с внещней стороны контролируемого издели 2. Внутри издели.ч 2 напротив датчика 1 устанавливаетс диафрагменное устройство, в котором диафрагма 3 прижата кольцом 4 к фланцу 5 с помощью винтов 6. По шлангу 7, соедин емому с полостью диафрагмы 3 через штуцер 8, подаетс воздух, что обеспечивает надежный контакт токопровод щей диафрагмы с контролируемым изделием на достаточно большом участке. При этом при питании датчика токами высокой частоты в диафрагме возникают вихревые токи, измеи ющие основной магнитный поток возбуждени . В измерительной катушке датчика наводитс э.д.с., по величине которойDuring the inspection, the sensor / is located on the outer side of the monitored product 2. Inside the product.h 2, opposite the sensor 1, a diaphragm device is installed in which the diaphragm 3 is pressed by the ring 4 to the flange 5 with screws 6. Through the hose 7 connected to the cavity of the diaphragm 3 The fitting 8, is supplied with air, which ensures reliable contact of the conductive diaphragm with the product under test at a sufficiently large area. In this case, when the sensor is powered by high-frequency currents, eddy currents appear in the diaphragm, which change the main magnetic excitation flux. In the measuring coil of the sensor is induced emf, the magnitude of which
Publications (1)
Publication Number | Publication Date |
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SU157503A1 true SU157503A1 (en) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3828248A (en) * | 1971-01-14 | 1974-08-06 | G Wennerberg | Apparatus for measuring a predetermined characteristic of moving sheet material which accommodates both tilting and changes in thickness and vertical location of the material |
US4946587A (en) * | 1988-12-02 | 1990-08-07 | General Electric Company | Automated gauging apparatus |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3828248A (en) * | 1971-01-14 | 1974-08-06 | G Wennerberg | Apparatus for measuring a predetermined characteristic of moving sheet material which accommodates both tilting and changes in thickness and vertical location of the material |
US4946587A (en) * | 1988-12-02 | 1990-08-07 | General Electric Company | Automated gauging apparatus |
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