High pressure mounting with positive lock

• US 4,645,242 A
• Filed: 08/26/1985
• Issued: 02/24/1987
• Est. Priority Date: 08/26/1985
• Status: Expired due to Fees

• Current Assignee: Dieterich Standard Corporation (Dover Corporation)
• Original Assignee: Dieterich Standard Corporation (Dover Corporation)
• Inventors: Coleman, Darrel F., Verhaagen, Donald R., Kalin, Horst W.
• Primary Examiner(s): Scanlan, Jr., Richard J.
• Assistant Examiner(s): Fischetti, Joseph A.
• Application Number:
  US06/769,431
• Time in Patent Office: 547 Days
• Field of Search: 73/182, 73/183, 73/861.65, 73/861.66, 73/861.67, 73/861.68, 285/89, 285/81, 285/82, 285/354, 285/158
• US Class Current: 285/141.1
• CPC Class Codes: F16L 41/008 for connecting a measuring instrument connecting means for pressure measuring apparatus G01L19/0007
• CPC Class Codes: F16L 41/082 Non-disconnectible joints, e.g. soldered, adhesive or caulked joints
• CPC Class Codes: F16L 41/16 the branch pipe comprising fluid cut-off means
• CPC Class Codes: G01F 1/36 the pressure or differential pressure being created by the use of flow constriction
• CPC Class Codes: G01F 15/185 Connecting means, e.g. bypass conduits

Abstract

This invention relates to an improved high pressure mounting for removably positioning pitot tube type flow measurement devices in a pipeline where the mounting includes a hollow tubular collar welded to the pipe in alignment with a probe-receiving opening therein and which is sized to slidably receive the body of the probe for movement into and out of the pipe, a relatively deformable and compressible ferrule encircling the probe body movable into abutting relation to an annular seat provided on the end of the collar remote from the welded end thereof, and a compression nut adapted to be screwed onto a threaded end of the collar adjacent the seat and cooperate therewith and with the ferrule therebetween to crimp the latter tightly around the probe thus sealing the probe in a fixed operative position, the improved positive lock which is characterized by adding an externally-threaded male extension to the compression nut, providing the probe body with a fixed abutment-forming projection exposed beyond said extension, and mounting a hollow open-ended generally cup-shaped cap on the probe body on the opposite side of the projection from the extension, the projection being sized to pass easily into the cap while the latter has both an internally-threaded portion adapted to screw onto the extension as well as an abutment-forming shoulder positioned and adapted to engage the projection when thus threadedly interconnected thereby preventing the probe body from being withdrawn from the collar.

Claims

1. For use with a first high pressure mounting for removably positioning cylindrically-bodied flow measurement probes in a pipeline where such mounting includes a hollow tubular collar welded to the pipe in alignment with a probe-receiving opening therein and which collar is sized to slidably receive the body of the probe for movement into and out of the pipe, a relatively deformable and compressible ferrule movable into abutting relation to an annular seat provided on the end of the collar remote from the welded end thereof, and a compression nut adapted to be screwed onto a threaded end of the collar adjacent the seat and cooperate therewith and with the ferrule therebetween to crimp the latter tightly around the pipe thus sealing the probe in a fixed operative position, a second mounting system coaxial with the first, yet spaced therefrom for preventing pullout which comprises:

first connecting means providing an extension of the compression nut on the end thereof remote from the end thereof attachable to the collar, first abutment-forming means exposed in fixed position on the outside of the probe body beyond the compression nut extension, and an open-ended generally cup-shaped cap mounted on the probe body for movement therealong on the opposite side of the first abutment-forming means from the compression nut extension, said cap including a second connecting means sized to pass over the first abutment-forming means and connect onto the first connecting means cooperating therewith when so connected to prevent relative axial movement therebetween, and said cap having a second abutment-forming means positioned and adapted to engage the first abutment-forming means and prevent removal of the probe body from its probe-receiving opening in the pipe when said first and second connecting means are interconnected.

2. The improved positive lock as set forth in claim 1 in which:

the first and second connecting means comprise mutually-engageable threaded sections.

3. The improved positive lock as set forth in claim 1 in which:

at least one of said first and second abutment-forming means comprises a continuous annular rib.

4. The improved positive lock as set forth in claim 1 in which:

the first connecting means comprises an externally-threaded male extension and the second connecting means comprises an internally-threaded female section extending inwardly toward the compression nut from the second abutment-forming means.

5. The improved positive lock as set forth in claim 3 in which:

both of the first and second abutment-forming means comprise continuous annular ribs.