Pressure sensing apparatus having pressure pulse dampener
AssigneeClass 1, Inc.
InventorsRandy Ewers, Joe Corley
Life of this patent
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Abstract
An apparatus and method for pressure sensing comprises a Bourdon tube connected to a source of fluid pressure for sensing pressure changes therein, the Bourdon tube containing a pressure sensitive medium, a socket having a bore therethrough and positioned to fluidly connect the Bourdon tube with the source of pressure, a diaphragm positioned in the bore between the Bourdon tube and the source of pressure so as to isolate the pressure sensitive medium from the fluid whose pressure is sensed, and a dampener positioned between the diaphragm and the Bourdon tube, the dampener having a porous metallic body effective for substantially dampening transmission of a pressure pulse from the source of pressure to the pressure sensitive medium.
Claims18
A pressure sensing apparatus, comprising:
- a Bourdon tube connected to a source of fluid pressure for sensing pressure changes therein, said Bourdon tube containing a pressure sensitive medium;
- a socket having a bore therethrough and positioned to fluidly connect said Bourdon tube with the source of pressure;
- a diaphragm positioned in said bore between said Bourdon tube and the source of pressure so as to isolate said pressure sensitive medium from the fluid whose pressure is sensed;
- and
- a dampener positioned between said diaphragm and said Bourdon tube, said dampener having a porous body effective for substantially dampening transmission of a pressure pulse from the source of pressure to said Bourdon tube.
A dampener adapted for positioning between a pressure sensing apparatus and a source of pressure being sensed so as to protect the pressure sensing apparatus from a pressure pulse, comprising:
- a metallic body having a plurality of pores extending through said body along random paths, said plurality of pores effectively sized for allowing passage of fluid pressure therethrough while substantially dampening a fluid pressure pulse from the source of fluid pressure.
In a pressure sensing apparatus connected to a source of fluid pressure, a method of protecting the sensing apparatus from a pressure pulse traveling through the fluid, the method comprising:
- forming a metallic body having a plurality of pores extending therethrough;
- positioning the metallic body relative to the source of fluid pressure so as to require fluid pressure to pass through the plurality of pores before being sensed by the pressure sensing apparatus;
- and
- passing the fluid pressure through the plurality of pores so as to substantially dampen the pressure pulse.
In a pressure sensing element connected to sense pressure in a fluid pressure system, a method of protecting the sensing element from a pressure pulse within the system, the method comprising:
- requiring the fluid to pass through a pressure resistant metallic body having a plurality of pores before reaching the sensing element, the plurality of pores having an orientation and average pore diameter effective for allowing passage of fluid pressure therethrough while substantially dampening the pressure pulse so as to thereby protect the pressure sensing element.
Dependencies are inferred from the claim text.