Title: Sensor positioning apparatus

Abstract: A meter mounting mechanism which is hydraulically operated is disclosed. It is particularly adapted to insert and position a meter transducer in a high pressure environment. The illustrated embodiment discloses a flange-mounted mechanism for positioning a sensor in a pipeline against extremely high pressures. The apparatus utilizes a flange-mounted, correctly oriented, bottom plate which secures an elongate cylinder. The cylinder encloses a piston on a piston rod. The piston rod extends above and below the cylinder. The piston rod is hollow to permit transducer connections can extend through it. The piston rod carries a transducer at the lower end. The transducer is able to be retracted on the rod into a shield to protect it. The piston rod extends upwardly through the head of the cylinder and on the exterior and further is equipped with a mechanism for locking the rod against rotation so that the rod does not rotate to thereby continue azimuthal orientation of the rod, piston and transducer mounted at the lower end.

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Inventors: Welker, Robert H. (Bellaire, TX, US)

Application Number: 909452
Filing Date: 1978-05-25
Publication_date: 1979-12-11
Assignee:
Primary Class(es): 73/198 73/861.83, 73/866.5
Other Classes:
US Patent Ref:

2783644	Mar, 1957	Willis	73/86.
2870629	Jan, 1959	Willis	73/86.
3007340	Nov, 1961	Kraftson	73/86.
3691846	Sep, 1972	Ingold	73/86.
3718034	Feb, 1973	Swearingen	73/86.
3747411	Jul, 1973	McDermott et al.	73/422.
4064756	Dec, 1977	MacLean	73/272.
4096754	Jun, 1978	Beveridg, Jr. et al.	73/432.

Other Refs:
Primary Examiner: Goldstein, Herbert
Assistant Examiner:
Attorney: Gunn & Lee