Non-intrusive stress measurement system un-lensed probe seating locking device

Patent metadata

Field	Value
Publication number	US-10180365-B2
Application number	US-201615003180-A
Country	US
Kind code	B2
Filing date	Jan 21, 2016
Priority date	Jan 21, 2016
Publication date	Jan 15, 2019
Grant date	Jan 15, 2019

Abstract

In various embodiments, the present disclosure provides a probe seating and locking device comprising a main body and a sleeve disposed at least partially concentrically about a probe. In various embodiments, the main body comprises a relief cut, a probe channel in communication with the relief cut, and a probe housing extending from the main body, wherein the probe housing has a probe passage in communication with the probe channel. In various embodiments, the probe passage comprises a first end, a second end, and a sensing aperture, wherein the probe housing is coupled to the main body at the first end. In various embodiments, the probe is disposed in the probe channel and is in contact with the seating step.

First claim

What is claimed is:

1. A probe seating and locking device comprising:
a main body having a transverse relief cut entirely across the main body, a probe channel in communication with the relief cut, and a probe housing extending from the main body, wherein the probe housing has a probe passage in communication with the probe channel, the probe passage having a first end, a second end, and a sensing aperture, wherein the probe housing is coupled to the main body at the first end; and
a sleeve disposed at least partially concentrically about a probe, wherein the sleeve comprises an annular cylinder structure, wherein the probe extends fully through the annulus of the annular cylindrical structure,
wherein the probe is disposed in the probe channel and the annular structure is configured to interfere with the relief cut and, in response to the interference, retain the probe in the probe channel.

2. The probe seating and locking device of claim 1 , wherein the sleeve is disposed within the relief cut, wherein the probe is configured to be disposed radially outward of rotating turbomachinery.

3. The probe seating and locking device of claim 2 , wherein the sleeve is coupled to the probe by at least one of brazing, shrink fitting, or welding.

4. The probe seating and locking device of claim 3 , wherein the relief cut has a first index surface and the sleeve has a second index surface.

5. The probe seating and locking device of claim 4 , wherein the first index surface and the second index surface are configured to align a sensing end of the probe proximate the sensing aperture.

6. The probe seating and locking device of claim 4 , wherein the probe passage further comprises a seating step wherein an interference between the first index surface and the second index surface is configured to hold the probe in contact with the seating step at the second end of the probe housing.

7. The probe seating and locking device of claim 1 , wherein the probe housing comprises at least one of steel, stainless steel aluminum, aluminum alloy, titanium, or titanium alloy.

8. A probe seating and locking device comprising:
a main body having a transverse relief cut entirely across the main body, a probe channel in communication with the relief cut, and a probe housing extending from the main body, wherein the probe housing has a probe passage in communication with the probe channel, the probe passage having a first end, a second end, and a sensing aperture, wherein the probe housing is coupled to the main body at the first end, wherein the probe housing is disposed at an angle to the main body; and
a sleeve disposed at least partially concentrically about a probe, wherein the sleeve comprises an annular cylinder structure, wherein the probe extends fully through the annulus of the annular cylindrical structure,
wherein the probe is disposed in the probe channel and the annular structure is configured to interfere with the relief cut and, in response to the interference, retain the probe in the probe channel.

9. The probe seating and locking device of claim 8 , wherein the sleeve is disposed within the relief cut, wherein the probe is configured to be disposed radially outward of rotating turbomachinery.

10. The probe seating and locking device of claim 9 , wherein the sleeve is coupled to the probe by at least one of brazing, shrink fitting, or welding.

11. The probe seating and locking device of claim 10 , wherein the relief cut has a first index surface and the sleeve has a second index surface.

12. The probe seating and locking device of claim 11 , wherein the first index surface and the second index surface are configured to align a sensing end of the probe proximate the sensing aperture.

13. The probe seating and locking device of claim 12 , wherein the probe housing further comprises a seating step wherein an interference between the first index surface and the second index surface is configured to hold the probe in contact with the seating step at the second end of the probe housing.

14. The probe seating and locking device of claim 8 , wherein the probe housing comprises at least one of steel, stainless steel, aluminum, aluminum alloy, titanium, or titanium alloy.

15. The probe seating and locking device of claim 8 , wherein the probe housing is coupled to the main body by one of brazing or welding.

16. A method of seating and locking a probe in a probe holder comprising:
forming a transverse relief cut entirely across a main body and across a probe channel of the probe holder having the main body;
coupling a sleeve about a probe having a sensing end, wherein the sleeve comprises an annular cylinder structure, wherein the probe extends fully through the annulus of the annular cylindrical structure; and
inserting the probe into the probe holder and the sleeve into the relief cut such that the sleeve lies in the relief cut with the sensing end of the probe proximate a sensing aperture of a probe passage.

17. The method of claim 16 , further comprising;
defining a first index surface of the relief cut, and defining a second index surface of the sleeve.

18. The method of claim 17 , further comprising;
calculating a first distance along the relief cut, the probe channel, and the probe passage between the first index surface of the relief cut and the sensing aperture; and
calculating a second distance along the probe between the second index surface of the sleeve and the sensing end of the probe.

19. The method of claim 18 , further comprising;
brazing the sleeve to the probe at a point where the first distance and the second distance are equal; and
inserting the sleeve in the relief cut such that the first index surface lies proximate the second index surface.

20. The method of claim 16 , further comprising;
coupling a metallic tack strap across the relief cut and over the sleeve; and
welding the metallic tack strap to the main body.

Assignees

• United Technologies Corp

Inventors

• Hockaday Bruce

Classifications

• G01L1/24 Primary

  by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis {using infrared, visible light, ultraviolet} · CPC title

• G01D11/245

  Housings for sensors · CPC title