US 9,810,616 B2
High pressure housing and optical viewing system
John E. Tucker, Centreville, VA (US); Paul L. Howard, Newmarket, NH (US); and John F. Reintjes, Alexandria, VA (US)
Assigned to The United States of America, as represented by the Secretary of the Navy, Washington, DC (US)
Filed by The United States of America, as represented by the Secretary of the Navy, Washington, DC (US)
Filed on Sep. 30, 2016, as Appl. No. 15/282,594.
Application 15/282,594 is a continuation in part of application No. 14/727,754, filed on Jun. 1, 2015, granted, now 9,541,492.
Claims priority of provisional application 62/004,955, filed on May 30, 2014.
Prior Publication US 2017/0016824 A1, Jan. 19, 2017
This patent is subject to a terminal disclaimer.
Int. Cl. G01N 1/10 (2006.01); G01N 15/02 (2006.01); G01N 21/03 (2006.01); G01N 33/28 (2006.01); G01N 15/00 (2006.01); G01N 21/05 (2006.01)
CPC G01N 15/0227 (2013.01) [G01N 21/0317 (2013.01); G01N 33/2858 (2013.01); G01N 21/05 (2013.01); G01N 2015/0053 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A high pressure housing and optical viewing system for separating a high pressure environment from a low pressure environment and allowing optical analysis of high pressure fluid, the system comprising:
a housing having a first surface configured to face a higher pressure environment, a second opposite surface configured to face a lower pressure environment, and a mounting hole extending through the housing from the first surface to the second opposite surface along a longitudinal axis,
the mounting hole having a first smaller-diameter cylindrical portion with a substantially constant diameter, a second larger-diameter cylindrical portion having a substantially constant diameter larger than the diameter of the first smaller-diameter portion, a first shoulder surface that extends radially outwardly from the first smaller-diameter portion to the second larger-diameter portion of the mounting hole, and an internally-threaded cylindrical portion between the second larger-diameter portion and the second opposite surface of the housing,
an optical window having a first smaller-diameter cylindrical end portion with a substantially constant diameter, a second larger-diameter cylindrical end portion with a substantially constant diameter larger than the diameter of the first end portion, and a radially outwardly extending shoulder surface between the first smaller-diameter cylindrical end portion and the second larger-diameter cylindrical end portion;
the optical window positioned in the mounting hole with the smaller end of the optical window exposed to the higher pressure environment;
a compliant gasket fitting around the first smaller-diameter cylindrical end portion of the optical window and positioned axially between the shoulder portion of the window and the first shoulder surface of the mounting hole; and
an externally-threaded retaining member positioned in the internally-threaded cylindrical portion of the mounting hole, such that tightening the externally-threaded retaining member compresses the gasket against the first shoulder of the mounting hole, creating a static seal and positioning the smaller end of the optical window at a desired axial position with respect to the first surface of the housing.