Fluid temperature measurement device

• US 20080130708A1
• Filed: 11/01/2007
• Published: 06/05/2008
• Est. Priority Date: 12/01/2006
• Status: Active Grant

• Current Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Original Assignee: Rolls-Royce PLC (Rolls-Royce Holdings Plc)
• Inventors: Watson, Hugh M.L., Coney, Michael H., Mullender, Andrew J., Boniface, Christopher S.
• Granted Patent: US 7,819,578 B2
• Time in Patent Office: Days
• US Class Current: 374/144
• CPC Class Codes: C09D 5/26 Thermosensitive paints
• CPC Class Codes: F01D 21/003 Arrangements for testing or measuring for measuring vibrations G01H
• CPC Class Codes: F05D 2260/80 Diagnostics
• CPC Class Codes: G01K 1/14 Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
• CPC Class Codes: G01K 11/06 using melting, freezing, or softening
• CPC Class Codes: G01K 11/12 using changes in colour, translucency or reflectance
• CPC Class Codes: G01K 13/02 for measuring temperature of moving fluids or granular materials capable of flow
• CPC Class Codes: G01K 13/024 of moving gases

Abstract

A temperature measuring arrangement measures the temperature of a fluid passing a component. The arrangement comprises a temperature measuring device having a substrate of low thermal capacity that has applied thereto two or more temperature recording media. The device is attached to and spaced apart from the component and is in the fluid flow.

Claims

1. A fluid flow temperature measuring device for a fluid passing a component, characterised in that the device comprises a shim, of lower thermal capacity than the component, having applied thereto a temperature recording media, the device is attached to and spaced apart from the component and is in the fluid flow.

2. A fluid flow temperature measuring device as claimed in claim 1 wherein two different temperature recording media are applied to the shim.

3. A fluid flow temperature measuring device as claimed in claim 1 wherein the temperature recording media is any one of the group comprising a wax based thermal tab and a thermal paint.

4. A fluid flow temperature measuring device as claimed in claim 1 wherein the temperature recording media are placed on different sides of the substrate.

5. A fluid flow temperature measuring device as claimed in claims 1 wherein the substrate has a lower thermal capacity than the component.

6. A fluid flow temperature measuring arrangement as claimed in claim 1 wherein the substrate is less than 2 mm in thickness.

7. A fluid flow temperature measuring device as claimed in claim 1 wherein the substrate is 0.25 mm in thickness.

8. A fluid flow temperature measuring device as claimed in claim 1 wherein the substrate is metallic.

9. A fluid flow temperature measuring device as claimed in claim 1 wherein a radiation shield is positioned between the substrate and the component.

10. A fluid flow temperature measuring device as claimed in claim 9 wherein at least one temperature measuring device is attached to the radiation shield.

11. A fluid flow temperature measuring device as claimed in claim 9 wherein the radiation shield is a low emissivity coating applied to the component.

12. A fluid flow temperature measuring device as claimed in claim 9 wherein the radiation shield is a low emissivity coating applied to one side of the shim.