US 5,325,731 AGranted

Fluid flow and mounting system for a sampling pump

AssigneePrecision General, Inc.

InventorsRoyce Miller, Dale Schafer

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Abstract

Improved methods and apparatus for providing a fluid flow and mounting system comprised a mounting nipple, a coupling for threaded engagement with a valve assembly, and a rigid flow line having preselected dimensions. The system of the present invention is particularly adapted for supporting a sampling pump from a pipe line, with the sampling pump including a manifold block having a pair of fluid ports for passing fluid in a hot-loop between the flow line and a sampling pump, and with the valve assembly being mounted to the flow line and including a pair of through passageways. The mounting nipple has a stop surface at each end thereof for engaging the manifold block and valve assembly, respectively, to fix the axial position of the manifold block with respect to the valve assembly. The coupling is rotatable about the mounting nipple for threaded engagement with mating threads on the valve body. With the mounting nipple fixed to the manifold, the sampling pump and mounting nipple may be rotated as an assembly with respect to the valve assembly until the outlet port in the manifold block achieves a preselected position with respect to the inlet port of the return fluid passageway in the valve assembly, and a rigid flow line having preselected dimensions is then used to interconnect these ports.

Claims20

Dependent claims

A hot loop fluid flow and mounting system for supporting a sampling pump from a pipe line having a sampling port, the sampling pump including a manifold block having a pair of fluid ports for passing fluid into and out of the manifold block, and a valve assembly mounted to the pipe line sampling port and including a pair of through passageways in a valve body for transmitting fluid from the pipe line to the manifold block, and for returning fluid from the manifold block to the pipe line, the system comprising:

a mounting nipple having an axial flow path therethrough, a valve assembly end of the mounting nipple positioning the flow path in fluid communication with one of the pair of through passageways in the valve assembly, and an opposing manifold end of the mounting nipple positioning the flow path in fluid communication with one of the pair of fluid ports in the manifold block;
the manifold end of the mounting nipple including a first securing member for structural engagement with the manifold block, and further including a manifold stop surface for engaging the manifold block to fix the axial position of the mounting nipple with respect to the manifold block;
the valve assembly end of the mounting nipple including a valve assembly stop surface for engaging the valve assembly to fix the axial position of the mounting nipple with respect to the valve body, such that the axial position of the valve body is fixed with respect to the manifold block;
a first seal for maintaining static sealing engagement between the manifold block and the mounting nipple;
a second seal for maintaining static sealing engagement between the mounting nipple and the valve body;
a coupling axially movable with respect to the mounting nipple and having a second securing member for structural engagement with the valve body;
and
a rigid flow line for transmitting fluid between the other of the pair of ports in the manifold block and the other of the through passageways in the valve assembly, one end of the rigid flow line being structurally connected to a side port in the valve body and an opposing end of the rigid flow line being structurally connected to the other port in the manifold block.

5 more elements

A fluid flow and mounting system for supporting a sampling pump manifold block from a pipe line, the manifold block having a pair of fluid ports for passing fluid into and out of the manifold block, the system comprising:

a valve assembly including a valve body having a pair of through passageways for transmitting fluid from the pipe line to the manifold block and for returning fluid from the manifold block to the pipe line, and at least one valve for controlling fluid flow through a respective one of the pair of through passageways;
a manifold end of the valve body having straight external threads;
a mounting nipple having an axial flow path therethrough, a valve assembly end of the mounting nipple positioning the flow path in fluid communication with one of the pair of through passageways in the valve assembly, and an opposing manifold with one of the mounting nipple positioning the flow path in fluid communication with one of the pair of fluid ports in the manifold block;
the manifold end of the mounting nipple including a securing member for structural engagement with the manifold block, and further including a manifold stop surface for engaging the manifold block to fix the axial position of the mounting nipple with respect to the manifold block;
the valve assembly end of the mounting nipple including a valve assembly stop surface for engaging the valve body to fix the axial position of the mounting nipple with respect to the valve body, such that the axial position of the valve body is fixed with respect to the manifold block;
a first seal for maintaining static sealing engagement between the manifold block and the mounting nipple;
a second seal for maintaining static sealing engagement between the valve body and the mounting nipple;
a coupling rotatable with respect to the mounting nipple and having internal straight threads for structural engagement with the external straight threads on the valve body;
and
a flow line structurally independent of the mounting nipple for transmitting fluid between the other of the pair of ports in the manifold block and the other of the through passageways in the valve assembly.

7 more elements

A method of mounting a sampling pump from a pipe line having a sampling port while providing fluid flow to the sampling pump, the sampling pump including a manifold block having a pair of fluid ports for passing fluid into and out of the manifold block, and a valve assembly mounted to the pipe line sampling port and including a pair of passageways for transmitting fluid from the pipe line to the manifold block and for returning fluid from the manifold block to the pipe line, the method comprising:

(a) sealingly fixing a mounting nipple having an axial flow path therethrough to one of the pair of fluid ports in the manifold block, while engaging a manifold stop surface on the mounting nipple with the manifold block to fix the axial position of the mounting nipple with respect to the manifold block;
(b) positioning the sampling pump and the mounting nipple, the mounting nipple being-fixed to the sampling pump, to engage a valve assembly stop surface on the mounting nipple with the valve assembly to position the mounting axially with respect to the valve assembly;
(c) selectively rotating the sampling pump and mounting nipple with respect to the valve assembly until the other of the pair of ports in the manifold block is at a preselected position with respect to the other of the through passageways in the valve assembly;
(d) fixedly securing the mounting nipple to the valve assembly to lock the selected rotational position of the sampling pump and mounting nipple with respect to the valve assembly and to fix the axial position of the mounting nipple with respect to the valve assembly;
and
(e) mounting a rigid flow line having preselected dimensions between the other of the pair of ports in the manifold block and the other of the through passageways in the valve assembly.

3 more elements

Dependencies are inferred from the claim text.