High temperature high pressure seal
AssigneeMagnetrol International, Incorporated
InventorPaul G. Janitch
Life of this patent
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Abstract
A probe for use with a measurement instrument includes a circuit connected to the probe. The probe comprises a process adaptor for mounting to a process vessel and including a through bore extending from a connector end to a process end. A tubular body is received in the process adaptor at the connector end and has an outer diameter less than an inner diameter of the process adaptor at the connector end to define a cavity therebetween. The cavity is open to the process vessel. A coupling secures the body to the process adaptor. A center conductor is coaxial with the tubular body and the process adaptor. A seal element is disposed between the tubular body and the center conductor. Process pressure in the process vessel increases compressive force between the tubular body and the seal element.
Claims19
A probe for use with a measurement instrument including a circuit connected to the probe, the probe comprising:
- a process adapter for mounting to a process vessel and including a through bore extending from a connector end to a process end;
- a tubular body received in the process adapter at the connector end and having an outer diameter less than an inner diameter of the process adapter at the connector end to define a cavity therebetween, the cavity being open to the process vessel;
- a coupling securing the body to the process adapter;
- a center conductor coaxial with the tubular body and the process adapter;
- and
- a seal element between the tubular body and the center conductor;
- wherein process pressure in the process vessel increases compressive force between the tubular body and the seal element.
A probe defining a transmission line for use with a measurement instrument including a pulse circuit connected to the probe for generating pulses on the transmission line and receiving reflected pulses on the transmission line, the probe comprising:
- a process adapter for mounting to a process vessel and including a through bore extending from a connector end to a process end;
- a tubular metal body received in the process adapter at the connector end and having an outer diameter less than an inner diameter of the process adapter at the connector end to define a cavity therebetween, the cavity being open to the process vessel, and having an enlarged counterbore facing the process vessel to define a shoulder;
- a coupling securing the tubular metal body to the process adapter;
- a center conductor coaxial with the tubular metal body and the process adapter;
- and
- a glass or ceramic seal element between the tubular metal body and the center conductor and engaging the shoulder;
- wherein process pressure in the process vessel increases compressive force between the tubular body and the seal element.
A probe for use with a measurement instrument including a circuit connected to the probe, the probe comprising:
- a process adapter for mounting to a process vessel and including a through bore extending from a connector end to a process end;
- a tubular metal body received in the process adapter at the connector end and having an outer diameter less than an inner diameter of the process adapter at the connector end to define a cavity therebetween, the cavity being open to the process vessel;
- a coupling securing the body to the process adapter;
- a center conductor coaxial with the tubular body and the process adapter;
- and
- a seal element between the tubular body and the center conductor providing a hermetical seal;
- wherein process pressure in the process vessel increases compressive force between the tubular body and the seal element.
Dependencies are inferred from the claim text.