Fluid pressure measuring device
AssigneeInland Steel Company
InventorCharles W. Elmer
Life of this patent
Estimating the term…
Abstract
A conduit conducting a dirty gas is connected by one line to an interface device connected by another line to a pressure measuring device having a cavity and a diaphragm defining one wall of the cavity. The interface device has a pair of chambers in fluid communication at their upper ends. The bottom end of one chamber is in fluid communication, via the one line, with the conduit conducting the dirty gas. The bottom of the second chamber is in fluid communication, via the other line, with the cavity in the measuring device. The second chamber, the cavity and the line connecting them are filled with a liquid which keeps dirt in the dirty gas from entering the cavity but transmits the pressure of the dirty gas to the diaphragm in the cavity.
Claims8
In a device for measuring the fluid pressure in a fluid-conducting conduit:
- a first housing;
- a cavity in said first housing, said cavity having a top, a bottom and side walls;
- a diaphragm defining one wall of said cavity;
- said first housing comprising means defining the other walls of said cavity;
- said cavity comprising means for containing a liquid;
- a second housing having a top, a bottom and side walls;
- said second housing including a rigid, vertical interior wall terminating at a top end and dividing said second housing into two vertically disposed chambers each having an upper end and a lower end;
- a first connecting line comprising means for placing a first of said two chambers in fluid communication with said fluid-conducting conduit and for transmitting to said first chamber the fluid pressure of the fluid in said conduit;
- said first chamber comprising means for containing therein the fluid from said conduit;
- a second of said chambers comprising means for containing a liquid with the top surface of said liquid above the top surface of the liquid contained in said cavity of the first housing and below the top of said second housing;
- said second housing comprising channel means, located above said top end of said vertical interior wall, for placing the upper end of said chamber in fluid communication with the upper end of said second chamber and for transmitting the fluid pressure of the fluid in said first chamber to the liquid in said second chamber;
- and a second connecting line comprising means for placing the bottom of said second chamber in liquid communication with the bottom of said cavity to transmit the fluid pressure on the liquid in said second chamber to the liquid in said cavity.
Dependencies are inferred from the claim text.