GB672343A - Improvements relating to temperature change responsive devices for use in power plant units and for other purposes - Google Patents
Improvements relating to temperature change responsive devices for use in power plant units and for other purposesInfo
- Publication number
- GB672343A GB672343A GB259050A GB259050A GB672343A GB 672343 A GB672343 A GB 672343A GB 259050 A GB259050 A GB 259050A GB 259050 A GB259050 A GB 259050A GB 672343 A GB672343 A GB 672343A
- Authority
- GB
- United Kingdom
- Prior art keywords
- magnet
- temperature
- frame
- permanent magnet
- magnetic
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/02—Arrangement of sensing elements
- F01D17/08—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure
- F01D17/085—Arrangement of sensing elements responsive to condition of working-fluid, e.g. pressure to temperature
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/36—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils
- G01K7/38—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using magnetic elements, e.g. magnets, coils the variations of temperature influencing the magnetic permeability
Abstract
672,343. Magnetic switches. GRAVINER MANUFACTURING CO., Ltd., WILKINSON SWORD CO., Ltd., MATHISEN, A., HALL, H. W., and STRAIN, R. N. C. April 3, 1950. [Feb. 1, 1950] No. 2590/50. Class 38 (v). [Also in Groups XXVI, XXXV and XXXVIII] A temperature responsive device specially suitable for giving warning of excessive temperatures in the various fire-proof compartments of a jet engine plant on an aircraft (see Group XXVI), comprises a cap 2 of magnetic material, which on reaching its Curie point loses its magnetic properties thereby causing relative movement between itself and a permanent magnet and the consequent operation of contacts. In the form shown in Fig. 2, the element 2 normally attracts one pole of an L-shaped permanent magnet 10 mounted in a frame pivoted at 12 and holds it in the position shown against the repulsive action of a second' permanent magnet 16 till the Curie temperature is reached when contacts 13, 14 are closed. When the temperature drops the parts resume their original positions. The magnet 10 and frame are pivoted at their C. of G. so that vibration has no effect and a blade spring 17 presses on the pivot pin to take up any play. In a modification, the frame carries one magnet which attracts the cap 2 and another magnet which is repelled by a third magnet. In another modification, the frame is biased by a spring and by air blast from an air scoop, and carries one U-shaped magnet with a short leg. The magnetic elements may be made of ferro nickel with nickel varying from 34 per cent to 45 per cent if the desired temperature of the Curie point is between 250‹ C. and 450‹ C. The elements may also be blackened or coated with silica so that they respond more readily to change of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB259050A GB672343A (en) | 1950-02-01 | 1950-02-01 | Improvements relating to temperature change responsive devices for use in power plant units and for other purposes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB259050A GB672343A (en) | 1950-02-01 | 1950-02-01 | Improvements relating to temperature change responsive devices for use in power plant units and for other purposes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB672343A true GB672343A (en) | 1952-05-21 |
Family
ID=9742250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB259050A Expired GB672343A (en) | 1950-02-01 | 1950-02-01 | Improvements relating to temperature change responsive devices for use in power plant units and for other purposes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB672343A (en) |
-
1950
- 1950-02-01 GB GB259050A patent/GB672343A/en not_active Expired
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