GB836635A - Method of and means for detecting variations in wall thickness of metal tubes - Google Patents
Method of and means for detecting variations in wall thickness of metal tubesInfo
- Publication number
- GB836635A GB836635A GB1801757A GB1801757A GB836635A GB 836635 A GB836635 A GB 836635A GB 1801757 A GB1801757 A GB 1801757A GB 1801757 A GB1801757 A GB 1801757A GB 836635 A GB836635 A GB 836635A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coils
- tube
- bore
- parts
- coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/30—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes
- G01B7/31—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B7/312—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
836,635. Electric tests. T.I. (GROUP SERVICES) Ltd. Sept. 2, 1958 [June 6, 1957], No. 18017/57. Class 37. The eccentricity of the bore of a tube 1 is determined by coils inside the tube generating fields which are detected by diametricallyopposite coils outside. As shown, coils A, A 1 , mounted on a support 3, enter the bore of the tube and are spaced from its walls by pins 6. Aligned with the coils A, A<SP>1</SP> are external coils B, B 1 , the spacing of which relative to the outside of the tube is determined by pins 5. Each coil B, B 1 is in two parts, B 1 , B2 and B 1 <SP>1</SP>, B 2 <SP>1</SP> respectively. The parts are so designed that the change in voltage in each part is the same if the coil moves away from coil A, although the absolute valve of these voltages differ. Thus, the effect of variation in the distance between coils A and B cancels out. The connections are shown in Fig. 3. Oscillator O feeds tuned coils A, A 1 and phasesensitive detector D. The two parts of each of coils B, B 1 (i.e. B 1 , B 2 and B 1 <SP>1</SP>, B 2 <SP>1</SP>) are mounted in opposition as are the coils themselves. The difference of output representing the eccentricity of the bore is amplified at P, fed to phase-sensitive detector D and indicated at M.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1801757A GB836635A (en) | 1957-06-06 | 1957-06-06 | Method of and means for detecting variations in wall thickness of metal tubes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1801757A GB836635A (en) | 1957-06-06 | 1957-06-06 | Method of and means for detecting variations in wall thickness of metal tubes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB836635A true GB836635A (en) | 1960-06-09 |
Family
ID=10105210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1801757A Expired GB836635A (en) | 1957-06-06 | 1957-06-06 | Method of and means for detecting variations in wall thickness of metal tubes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB836635A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475083A (en) * | 1977-09-19 | 1984-10-02 | Studsvik Energiteknik Ab | Method and apparatus for electromagnetically measuring parameters of electrically conductive high temperature materials |
| EP0292426A2 (en) * | 1987-05-18 | 1988-11-23 | C.A. Weidmüller GmbH & Co. | Device for determining the position of a rotationally-symmetric body with respect to a reference axis |
| EP0480222A2 (en) * | 1990-10-06 | 1992-04-15 | FEINPRÜF PERTHEN GmbH | Inductive sensor for measuring length |
| CN114674221A (en) * | 2022-03-01 | 2022-06-28 | 宁波金田新材料有限公司 | Enameled wire is with quick eccentric detection device |
| CN118168463A (en) * | 2024-05-14 | 2024-06-11 | 山东戈图精密机械有限公司 | Detection device for precision machinery bearing ring |
-
1957
- 1957-06-06 GB GB1801757A patent/GB836635A/en not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4475083A (en) * | 1977-09-19 | 1984-10-02 | Studsvik Energiteknik Ab | Method and apparatus for electromagnetically measuring parameters of electrically conductive high temperature materials |
| EP0292426A2 (en) * | 1987-05-18 | 1988-11-23 | C.A. Weidmüller GmbH & Co. | Device for determining the position of a rotationally-symmetric body with respect to a reference axis |
| EP0292426A3 (en) * | 1987-05-18 | 1991-01-02 | C.A. Weidmüller GmbH & Co. | Device for determining the position of a rotationally-symmetric body with respect to a reference axis |
| EP0480222A2 (en) * | 1990-10-06 | 1992-04-15 | FEINPRÜF PERTHEN GmbH | Inductive sensor for measuring length |
| EP0480222A3 (en) * | 1990-10-06 | 1992-06-17 | Feinpruef Perthen Gmbh | Inductive sensor for measuring length |
| CN114674221A (en) * | 2022-03-01 | 2022-06-28 | 宁波金田新材料有限公司 | Enameled wire is with quick eccentric detection device |
| CN114674221B (en) * | 2022-03-01 | 2023-08-25 | 宁波金田新材料有限公司 | Quick eccentric detection device for enameled wire |
| CN118168463A (en) * | 2024-05-14 | 2024-06-11 | 山东戈图精密机械有限公司 | Detection device for precision machinery bearing ring |
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