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A compressible fluid pumping system

A technology of compressing fluid and pressurizing fluid, applied in the direction of pumps, pump components, pump devices, etc., can solve problems such as poor metering

Active Publication Date: 2011-09-28
AGILENT TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This variability results in poor metering of pumped fluids of unknown density and requires the use of correction factors, which are often insufficient to provide pulsation-free flow from the pump head

Method used

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  • A compressible fluid pumping system
  • A compressible fluid pumping system
  • A compressible fluid pumping system

Examples

Experimental program
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Embodiment Construction

[0058] refer to Figure 7 , shows a schematic diagram of a preferred embodiment of the invention. Booster pump 70 receives compressible fluid from reservoir 72 . An optional prechiller 74 cools the compressible fluid input stream and also the pump head of the booster pump 70 . Booster pump 70 delivers flow to an output flow path that includes optional pulsation dampener 76 , booster pressure sensor 78 , and thermal conditioning device 80 . Metering pump 82 receives the output flow of booster pump 70 and delivers flow through optional temperature sensor 84 and process pressure sensor 86 to process flow stream 88 . Controller 90 receives sensor signals from pressure sensor 78 , pressure sensor 86 , and optional temperature sensor 84 . Controller 90 further controls optional thermal zones of device 74 and device 80 and controls the pumping speed of booster pump 70 . Optionally, controller 90 also controls the metering speed of metering pump 82, although this is not required f...

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Abstract

An invention is claimed that enables the pumping of compressible fluids at high pressures when an accurate flow is desired. Two pressure sources, for example pumps plumbed in series, separate thermodynamic work, such as pressurization, at the first pressure source from a volumetric or matter metering function in the second pressure source. One example is a flowstream delivery for a chemical instrumentation system that is manufactured from relatively unsophisticated pumps yet delivers precise flows with low pulsation (<1%) over pressures greater than 100 bar. An advantage of one embodiment allows the economical conversion of typical HPLC systems to state of-the-art supercritical fluid chromatography (SFC) systems with minimal modification to system components.

Description

[0001] priority statement [0002] This application claims the benefit of US Provisional Application No. 61 / 075,251, filed June 24, 2008. technical field [0003] The present invention relates to a method and system for pumping compressible fluids. More specifically, the present invention relates to pumping compressible fluids in high pressure applications. Background technique [0004] Pumping in industry takes many forms, all of which have the general requirement of transporting fluids or slurries through process streams. Pumps are selected based on application requirements including head pressure, metering accuracy, temperature, particle tolerance, fluid viscosity, cost, safety, service rate, and a variety of other parameters. Pumps generally fall into two categories. Positive displacement pumps divide the working fluid into discrete volumes and force them to move in a controlled direction. Dynamic pumps work by increasing the kinetic energy of the system thereby loca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B49/00
CPCG01N2030/326F04B11/0075F04B23/06G01N30/34G01N30/32Y10T29/49826Y10T29/49716Y10T137/86139B01D15/40F04B49/00F04B13/00F04B23/04
Inventor T·A·贝格K·D·福格尔曼E·E·维克福什L·T·斯塔茨三世S·高露洁M·A·卡萨莱
Owner AGILENT TECH INC
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