US2598307A - Liquid flow regulating system - Google Patents

Liquid flow regulating system Download PDF

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Publication number
US2598307A
US2598307A US132437A US13243749A US2598307A US 2598307 A US2598307 A US 2598307A US 132437 A US132437 A US 132437A US 13243749 A US13243749 A US 13243749A US 2598307 A US2598307 A US 2598307A
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US
United States
Prior art keywords
pressure
line
liquid
metering pump
spinning solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US132437A
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English (en)
Inventor
Rutgers Ulrich Jan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzona Inc
Original Assignee
American Enka Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by American Enka Corp filed Critical American Enka Corp
Application granted granted Critical
Publication of US2598307A publication Critical patent/US2598307A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/09—Control of pressure, temperature or feeding rate
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D1/00—Treatment of filament-forming or like material
    • D01D1/06—Feeding liquid to the spinning head
    • D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2617—Bypass or relief valve biased open
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2622—Bypass or relief valve responsive to pressure downstream of outlet valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/2496—Self-proportioning or correlating systems
    • Y10T137/2559—Self-controlled branched flow systems
    • Y10T137/2574—Bypass or relief controlled by main line fluid condition
    • Y10T137/2605—Pressure responsive
    • Y10T137/2642—Sensor rigid with valve
    • Y10T137/2645—Flexible sensor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7784—Responsive to change in rate of fluid flow
    • Y10T137/7787—Expansible chamber subject to differential pressures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/85978—With pump
    • Y10T137/86131—Plural

Definitions

  • the present invention relates to a system for the continuous and uniform supply of a low viscosity liquid to a spinning solution by means of a pipe system, and more particularly the invention relates to a device for minimizing the pressure differential in and around the metering pump in the main supply line.
  • the supply of the liquid emulsion or dispersion to the spinning solution is effected normally by means of metering pumps, the most suitable being positive displacement pumps of the gearwheel type.
  • These pumps are well adapted for supplying highly viscous liquids, but in the case of supplying W viscosity liquids as those contemplated by the present invention, difficulties arise due to the fact that the liquids are supplied under a relatively high pressure, which pressure is irregular as a result of a combination of several factors inherent in the various processes and notably in the viscose process. These pressure variations are reflected in the supply lines creating a pressure differential before and after the meterin pump, which results in an irregular supply of the liquids to the spinning solution.
  • Another object of this invention is to conform the pressure before the metering pump to the pressure after the metering pump by utilizing, in a branch pipe line before the metering pump, an elastic coupling that varies the rate of flow of liquid through the branch line in accordance with pressure variations in the main supply line.
  • the numeral l0 indicates the spinnin solution line for conducting the spinning solution to the spinning machine proper.
  • Stock tank H contains a low viscosity liquid emulsion or dispersion l2 to be ultimately supplied under pressure to the spinning solution line H! by Way of a pipe system indicated generally at I 3.
  • the liquid I2 is drawn through pipe [4 and three-way valve l5 by means of auxiliary gear pump 16 and metering gear pump l'l.
  • Valve 15 connects pipe [4 to main pipe line l8 during normal operation when the liquid is being supplied to the spinning solution in spinning solution line It.
  • Metering pump I1 is regulated to pump a predetermined quantity of liquid through the main pipe lines 19 and 20 to the spinning solution line It.
  • Auxiliary gear pump I6 is driven at a considerably higher speed than metering pump ll so that the output of pump [6 is considerably greater, even as much as ten times as large as the output of pump Ii.
  • is bypassed through branch pipe line 22, with the small residual portion going through metering pump H.
  • the by-passed portion of liquid flows from branch pipe line 22 through a pressure regulating device generally indicated at 23 and back into main pipe line l8 before auxiliary pump is via branch pipe line 24.
  • the pressure regulating device consists of an elastic coupling 25 such as a rubber tube that connects branch pipe lines 22 and 24.
  • This elastic coupling is surrounded by an air-tight shell 26 having a liquid inlet 21 and a liquid outlet 28 for accommodating the passage of liquid from the main pipe line I 9 to the main pipe line 20.
  • the pressure differential before and after metering pump 17 is min mized, and in practice, .has been found to be reduced under 0.2 atmosphere when a very flexible rubber tube is usedas the couplin in the pressure chamber. It is desirable that the tube be extremely elastic so as to respond to pressure changes immediately and close when the pressure increases after the metering pump and in the pressure chamber. This will maintain the pressure the same inand around the metering pump even though the difiereneein pressure in branch pipe lines 22 and 24- may be as much as 4 atmospheres.
  • Thepressure before and after the metering pump H is indicated on pressure gauges 39 and 3!, respectively.
  • the three-way valve 15 connects pipe I l to main pipe line i8 so that liquid is being supplied to the spinning solution.
  • the valve l5 can also be used to permit the measurement of the time required for a predetermined quantity of liquid to be exhausted from measuring vessels 3.? and 33. This can be accomplished by rotating the valve 180 from the position shown in the figure, whereby the measuring vessels 32 and 33 are connected to main pipe line [-8, but the supply from the tank H is cut off. In the position shown in the figure, the supply from tank I! is connected to main pipe line [8, while at the same time the supply is connected to the measuring vessels 32 and 33 for filling the same during normal operation.
  • a non-return valve 3% is provided at the junction of main pipe line .213 with the'spinning solution line L9 i 4 What lsclaimed is: 1.
  • 'Alsystem' for constantly supplying a predetermined quantity of low viscosity liquid to a spinning solution which comprises a main pipe line forsupplyingthe liquid to the spinning solution, a metering pump in the main line for controlling the quantity of liquid supplied, a branch line connected to the main line before the metering pump, an auxiliary pump in the main line upstream .of the branch line constructed and arranged to operate at a higher capacity than the metering pump whereby excess liquid is by-passed to the branch line before the metering pump, means, responsive to pressure changes in the main line .downstreamof the metering pump, to regulate the .flow of liquid in the branch line whereby the pressure before the metering pump conforms 'to' the pressure after the metering pump.
  • a system for constantly supplying a predetermined quantity of low viscosity liquid to a. spinning solution .Which comprises a main pipe line for supplying the liquid to the spinnin solution, a metering .pump in the main line for controllingtheqnantity of liquid supplied, a branch line connectedtothe main line before the metering pump, an auxiliary pump in the main line upstream of the branch line constructed and ar ranged .to operate at a higher capacity than the metering pump whereby excess liquid is by-passed to' the branch line before the metering pump, an elastic coupling in the branch line and a pressure chamber surroundin the said coupling and connected to the main line whereby pressure fluctuations in the main line after the metering pump will regulate the flow of liquid in the branch line and thereby conform the pressure before the metering pump to the pressure after the metering pump.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Loading And Unloading Of Fuel Tanks Or Ships (AREA)
US132437A 1949-01-04 1949-12-12 Liquid flow regulating system Expired - Lifetime US2598307A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL694360X 1949-01-04

Publications (1)

Publication Number Publication Date
US2598307A true US2598307A (en) 1952-05-27

Family

ID=19808827

Family Applications (1)

Application Number Title Priority Date Filing Date
US132437A Expired - Lifetime US2598307A (en) 1949-01-04 1949-12-12 Liquid flow regulating system

Country Status (6)

Country Link
US (1) US2598307A (de)
BE (1) BE491946A (de)
DE (1) DE820784C (de)
FR (1) FR1000941A (de)
GB (1) GB694360A (de)
NL (1) NL66828C (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766765A (en) * 1952-04-30 1956-10-16 Nat Cylinder Gas Co Method and apparatus for maintaining uniform flow resistance
US2837102A (en) * 1954-12-20 1958-06-03 Ind Rayon Corp Method and apparatus for incorporating coloring matter in spinning solutions
US2859013A (en) * 1954-03-01 1958-11-04 Dresser Ind Borehole logging signaling system
DE1148698B (de) * 1957-02-20 1963-05-16 Industrial Nucleonics Corp Selbsttaetige Spinnpumpenregelung fuer Spinnmaschinen zur Herstellung synthetischer Faeden
US3463179A (en) * 1965-12-10 1969-08-26 Ceskoslovenska Akademie Ved Apparatus for feeding and measuring a substantially evenly segmentized fluidal medium
US4339917A (en) * 1979-06-13 1982-07-20 The Garrett Corporation Fuel delivery system and method
US5286433A (en) * 1989-09-25 1994-02-15 Applicator System Ab Method and device for pressure balancing of hoses at extruding of two components
US20150209818A1 (en) * 2014-01-26 2015-07-30 Tokyo Electron Limited Inline Dispense Capacitor
US10354872B2 (en) 2016-08-11 2019-07-16 Tokyo Electron Limited High-precision dispense system with meniscus control
US10403501B2 (en) 2016-08-11 2019-09-03 Tokyo Electron Limited High-purity dispense system
US10712663B2 (en) 2016-08-11 2020-07-14 Tokyo Electron Limited High-purity dispense unit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1272212A (en) * 1918-07-09 Constantine Hutchins Flow-controlling apparatus.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1272212A (en) * 1918-07-09 Constantine Hutchins Flow-controlling apparatus.

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766765A (en) * 1952-04-30 1956-10-16 Nat Cylinder Gas Co Method and apparatus for maintaining uniform flow resistance
US2859013A (en) * 1954-03-01 1958-11-04 Dresser Ind Borehole logging signaling system
US2837102A (en) * 1954-12-20 1958-06-03 Ind Rayon Corp Method and apparatus for incorporating coloring matter in spinning solutions
DE1148698B (de) * 1957-02-20 1963-05-16 Industrial Nucleonics Corp Selbsttaetige Spinnpumpenregelung fuer Spinnmaschinen zur Herstellung synthetischer Faeden
US3463179A (en) * 1965-12-10 1969-08-26 Ceskoslovenska Akademie Ved Apparatus for feeding and measuring a substantially evenly segmentized fluidal medium
US4339917A (en) * 1979-06-13 1982-07-20 The Garrett Corporation Fuel delivery system and method
US5286433A (en) * 1989-09-25 1994-02-15 Applicator System Ab Method and device for pressure balancing of hoses at extruding of two components
US20150209818A1 (en) * 2014-01-26 2015-07-30 Tokyo Electron Limited Inline Dispense Capacitor
US9718082B2 (en) * 2014-01-26 2017-08-01 Tokyo Electron Limited Inline dispense capacitor
US10354872B2 (en) 2016-08-11 2019-07-16 Tokyo Electron Limited High-precision dispense system with meniscus control
US10403501B2 (en) 2016-08-11 2019-09-03 Tokyo Electron Limited High-purity dispense system
US10712663B2 (en) 2016-08-11 2020-07-14 Tokyo Electron Limited High-purity dispense unit

Also Published As

Publication number Publication date
FR1000941A (fr) 1952-02-18
GB694360A (en) 1953-07-22
BE491946A (de) 1900-01-01
DE820784C (de) 1951-11-12
NL66828C (de) 1900-01-01

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