Cryogenic reciprocating pump
First Claim
1. A reciprocating cryogenic pump for pumping cryogenic liquids at relatively high pressure and flow rate comprising:
- a tubular pump body having a forward end and a rearward end;
a cylindrical bore internal of said pump body for forming a pumping chamber therein extending from the forward end to the rearward end of said pump body;
a reciprocating piston slidably disposed within said pumping chamber and a piston rod extending from said piston through the rearward end of said pump body along the longitudinal axis of said pump;
valve means disposed at the forward end of said pump body for controllably introducing cryogenic liquid into said pumping chamber during the suction stroke of said piston and for controllably discharging cryogenic liquid from said pumping chamber during the discharge stroke of said piston;
packing means laterally spaced a predetermined distance from the rearward end of said pump body in surrounding engagement with said piston rod;
a thin metal expansion member having at least one corrugation for thermally coupling the rearward end of said pump body to said packing means; and
load carrying support means common to said packing assembly and said pump body for relieving the tensile loading from said pump body, said load carrying support means comprising an outer jacket surrounding said pumping chamber and interconnecting only the forward end of said pump body to said packing assembly.
5 Assignments
0 Petitions
Accused Products
Abstract
The cryogenic reciprocating pump includes a pump body having a cylindrical pumping chamber extending from the forward end of the pump body to the pump body rearward end. A piston is reciprocated in the pumping chamber under the control of a piston rod extending from the pumping chamber. A packing assembly surrounds the piston rod and is coupled through an intermediate section to the rearward end of the pump body. The intermediate section comprises a tubular shell of low thermal conductivity material and a corrugated metal expansion member. The packing assembly is affixed to a support member connected to the pump body at the forward end thereof.
79 Citations
11 Claims
-
1. A reciprocating cryogenic pump for pumping cryogenic liquids at relatively high pressure and flow rate comprising:
- a tubular pump body having a forward end and a rearward end;
a cylindrical bore internal of said pump body for forming a pumping chamber therein extending from the forward end to the rearward end of said pump body;
a reciprocating piston slidably disposed within said pumping chamber and a piston rod extending from said piston through the rearward end of said pump body along the longitudinal axis of said pump;
valve means disposed at the forward end of said pump body for controllably introducing cryogenic liquid into said pumping chamber during the suction stroke of said piston and for controllably discharging cryogenic liquid from said pumping chamber during the discharge stroke of said piston;
packing means laterally spaced a predetermined distance from the rearward end of said pump body in surrounding engagement with said piston rod;
a thin metal expansion member having at least one corrugation for thermally coupling the rearward end of said pump body to said packing means; and
load carrying support means common to said packing assembly and said pump body for relieving the tensile loading from said pump body, said load carrying support means comprising an outer jacket surrounding said pumping chamber and interconnecting only the forward end of said pump body to said packing assembly. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
- a tubular pump body having a forward end and a rearward end;
Specification