Back pressure system for slurry pipeline
AssigneeBechtel International Corporation
InventorJay P. Chapman
Life of this patent
Estimating the term…
Abstract
For use in providing back pressure in a slurry flow, a first pipe has an inlet for receiving the slurry and an outlet for discharging the slurry. A number of inverted U-shaped second pipes communicate at their ends with the first pipe at respective, spaced locations along the length of the first pipe. Each second pipe has a pair of spaced sides and each side has an orifice choke therewithin. The sides of each second pipe extend upwardly from the first pipe so that the second pipes are self-draining. A valve is provided for each second pipe, respectively, each valve being carried by the first pipe near one end of the corresponding second pipe. A generally horizontal third pipe is coupled to the first pipe in bypass relationship thereto. Valve means controls the flow of a slurry into either the first or the third pipe.
Claims10
A back pressure system for a slurry pipeline comprising:
- a first pipe having a fluid inlet and a fluid outlet;
- a back pressure device for each of a number of spaced locations, respectively, along said first pipe, each device including a generally inverted U-shaped second pipe having a pair of spaced, vertical sides and a pair of opposed open ends communicating with the first pipe, each second pipe having means for providing an orifice choke therein;
- and a valve for each second pipe, respectively, each valve being across said first pipe between the ends of the respective second pipe.
A back pressure system for a slurry pipeline comprising:
- a first pipe having a fluid inlet and a fluid outlet, the pipe defining a first path for a slurry flow between the inlet and the outlet;
- a plurality of inverted U-shaped second pipes, there being a second pipe for each of a plurality of spaced locations, respectively, along the length of the first pipe, each second pipe having a pair of opposed, generally parallel sides, the length of one side being greater than the length of the other side, said first pipe having a first segment and a second segment adjacent to each of said locations, respectively, each segment having a horizontal part and a vertical part, the longer side of each second pipe communicating with the horizontal part of the corresponding first segment and the shorter side of each second pipe communicating with the corresponding first and second segments at the junction of the vertical and horizontal parts thereof, respectively;
- a valve for each first segment, respectively, the valve being on the vertical part thereof;
- and an orifice choke for each of the sides of each second pipe, respectively, the chokes being operable to provide back pressure for a fluid flow therethrough.
A back pressure system for a slurry pipeline comprising:
- a first pipe having a fluid inlet and a fluid outlet;
- a back pressure device for each of a number of spaced locations, respectively, along said first pipe, each device including a generally inverted U-shaped second pipe having a pair of spaced, vertical sides and a pair of opposed open ends communicating with the first pipe, each second pipe having one side longer than the other side, said first pipe having a first segment and a second segment for each location, respectively, each first segment extending between ends of the corresponding second pipe, each second segment extending from the end of the short side of a corresponding second pipe to the end of the long side of the next adjacent second pipe, each second pipe having means for providing an orifice choke therein;
- and a valve for each second pipe, respectively, each valve being across said first pipe between the ends of the respective second pipe.
A back pressure system for a slurry pipeline comprising:
- a first pipe having a fluid inlet and a fluid outlet;
- a back pressure device for each of a number of spaced locations, respectively, along said first pipe, each device including a generally inverted U-shaped second pipe having a pair of spaced, vertical sides and a pair of opposed open ends communicating with the first pipe, each second pipe having means for providing an orifice choke therein;
- a valve for each second pipe, respectively, each valve being across said first pipe between the ends of the respective second pipe;
- a third pipe coupled with said first pipe in bypass relationship thereto;
- and valve means for controlling the flow through the first and third pipes.
Dependencies are inferred from the claim text.