US3548862A - Control system for a gas discharger - Google Patents

Control system for a gas discharger Download PDF

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Publication number
US3548862A
US3548862A US757953A US3548862DA US3548862A US 3548862 A US3548862 A US 3548862A US 757953 A US757953 A US 757953A US 3548862D A US3548862D A US 3548862DA US 3548862 A US3548862 A US 3548862A
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US
United States
Prior art keywords
valve
gas
passage
chamber
control system
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
US757953A
Other languages
English (en)
Inventor
Itsuro Nakamura
Yasuo Takeichi
Teruo Saito
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.)
Yutaka Sangyo KK
Original Assignee
Yutaka Sangyo KK
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 Yutaka Sangyo KK filed Critical Yutaka Sangyo KK
Application granted granted Critical
Publication of US3548862A publication Critical patent/US3548862A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17B—GAS-HOLDERS OF VARIABLE CAPACITY
    • F17B1/00—Gas-holders of variable capacity
    • F17B1/02—Details
    • F17B1/12—Gas admission or discharge arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/028—Special adaptations of indicating, measuring, or monitoring equipment having the volume as the parameter
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/0402—Control of fluid pressure without auxiliary power with two or more controllers mounted in series
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0663—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using a spring-loaded membrane with a spring-loaded slideable obturator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/01—Pure fluids
    • F17C2221/013—Carbone dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0621—Volume
    • 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
    • Y10T137/6416—With heating or cooling of the system
    • Y10T137/6579—Circulating fluid in heat exchange relationship
    • 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
    • Y10T137/7793—With opening bias [e.g., pressure regulator]
    • Y10T137/7795—Multi-stage

Definitions

  • a control system for discharging gas from a reservoir of liquefied carbon dioxide where a main body comprising the first, second and third valves for depressing gas pressure fixed therein, said first valve communicates with the second valve through a perforated passage 8; said second valve communicates with an expanded space formed therearound through a passage 17; said expanded space communicates with the third valve through a passage 24; a chamber for depressing gas pressure of said third valve communicates with a screwed passage 26 formed in said main body through a perforated passage 29, and a rear end of said screwed passage communicates with a gauge fixed to said main body.
  • FIG. 1 PATENTED nc22
  • the present invention relates to a control system for a carbon dioxide discharger controlling the pressure of CO gas in the system supplied from a reservoir of the liquified gas.
  • an electric heater or a warming device using warm water was employed in the structure, with the result that the construction became complicated and difficult to manufacture. Also, damage due to the heater or the warming device occurred frequently, despite the greater expense and complexity.
  • the object of the present invention isto provide an improved gas discharger which overcomes the defects mentioned above.
  • the flow of gas in a con trol system of a gas discharger is controlled by a first valve a which communicates with a second valve b through a first passage 8 which restricts and exercises a compressive action on the flowing gas.
  • the second valve communicates with an expansion chamber 18 formed therearound through a second passage 17 which again restricts and exercises a compressive action on the flowing gas.
  • the expansion chamber 18 communicates with the third valve r: c through a third passage 24 to again restrict and exercise a compressive action on the gas flow.
  • a chamber. 28 for reducing gas pressure surrounds the third valve and communicates with a helical passage 26 formed in an inner casing 19 through a'restrictive passage 29. In said helical passage 26 the cold gas absorbs heat by contacting with the inside of the main body. which has fins 1 therearound, before it enters into the casing of a gauge 35.
  • the gas is subjected to several successive compressive actions as it passes through the valves and repeatedly expands.
  • the gas flows in an irregular fashion so that the rate of heat-exchange is effective and a cooling action of the gasified liquid upon the passages through which it flows, is reduced. Accordingly the phenomenon of solidifying gas into dry ice" does not occur, despite the absence of any heating device; and freezing within the passages does not occur.
  • the diameters of the passages for the gas, especially those of the valve-openings can be enlarged for more effective flow of the gas; and the flow can be controlled accurately during continuous discharge of a large amount of carbon dioxide gas.
  • FIG. 1 is an elevated longitudinal cross-sectional view through a device embodying the invention.
  • FIG. 2 is an end elevation view of the device of FIG. 1.
  • a first valve designated as a whole by letter a, has a hollow casing 4 mounted on the body 2 in a radially extending position by a screw-threaded connection. Inside the valve casing 4 is a controllable valve 3 for reducing the pressure of gas entering the valve casing from above (referring to FIG. 1).
  • Valve-b comprises a tubular casing 5 exteriorly screw-threaded at one end for mounting in an interiorly screw-threaded recess at the exit end of the passage 8.
  • movable valve member 6 Within an axial bore or chamber in the casing 5 of the second valve is movable valve member 6 adapted to be seated upon or adjustably spaced from an apertured valve seat 10 midway along the valve casing.
  • the valve member 6 is biased toward the seat 10 by a coiled compression spring 9 in the chamber 7 in one end (the left end in FIG. 1) of the casing 5.
  • the valve member 6 is connected by an axially extending stem or rod 14, inserted through the aperture 11 of the valve seat 10, to an axially extending control bar or element 13 located in another axial chamber 12 (at the right end in FIG. 1) of the tubular casing 5.
  • An adjusting screw 16 is mounted axially by a screw-thread connection in the right end of the tu-' bular casing 5 and engages the control element 13 through a coiled compression spring 15. As the screw 16 is screwed into the casing the valve 6 is lifted from the seat 10 the desired distance.
  • the left chamber 7 communicates with the-right chamber through the aperture 11 in the valve seat when the valve 6 is off the seat 10.
  • an inner body 19 which is of cylindrical form, closed at its right end and abutting at its left end against a transverse wall of the left end part of the body 2.
  • the inner body 10 surrounds the valve b and is spaced therefrom providing an annular expansion chamber 18.
  • one or more radial bores or passages 17 are provided in the wall of the valve chamber 12.
  • a third throttle valve designated as a whole by letter c
  • the valve 0 is mounted by a screw-thread connec tion in the chamber 23 which is formed as a recess in the left or head portion of the main body 2.
  • a movable valve member 22 is biased by a coiled compression spring 20 toward an apertured valve seat 21.
  • an adjustment screw 30 is mounted in a screw-threaded hole. 148 in a cap member secured the left 134 137 128 144 of the body 2.
  • the inner end of the screw 30 is formed to engageone end of a coiled compression spring 31 whose other end engages a seat member on a diaphragm 27 which is secured between the aforementioned cap and head members.
  • the diaphragm covers an expansion chamber 28 formed as a cavity in the left side of the head part of the main body 2 around the valve c.
  • the spring 31 presses more or less strongly on the diaphragm, whose movement is transmitted by the stem 32 to the movable valve member 22.
  • the movement of the diaphragm alters the space between the valve member 22 and its seat 21 and controls the flow through the valve.
  • This helical passage runs from the exit end of the narrow connecting passage 29 to the opposite end of the inner body 19 where it connects with a longitudinally extending passage 34 leading to a holder of gas pressure receiver 37 of a pressure indicator 36 included in a gauge 35 fixed to the right end of the main body 2.
  • the inside of the gauge 35 communicates with a delivering or outlet duct or pipe 40 having a valve 39 connected therein.
  • Carbon dioxide in gasous form from a reservoir containing the liquified gas passes into the first valve a having its pressure reduced by the throttling action of the valve member 3.
  • the gas flow is impeded and expansion of the gas is retarded as the gas is subjected to a compressive action whilst passing through passage 8 as the gas comes into the chamber 7 of the second valve b.
  • the gas is throttled by passing through the restricted space between the valve member 6 and its seat 10 and then through the aperture 11 in the valve seat from whence the gas passes through restricted orifices 17 into the expansion chamber 18.
  • the expanding gas then is delivered to the third valve 0 through the passage 24 wherein the gas flow is retarded and the gas is subject to compressive action by the size and restrictive nature of such passage.
  • the third valve further reduces the pressu'e of the gas a third time as it is delivered from the valve into expansion chamber 28.
  • the gas is delivered to the restrictive flow passage 29 wherein for the third time the flow is restricted and the expansion halted by the compressive action of the restrictive flow passage 29. From passage 29 the flow is into the helical passage wherein heat is absorbed from the relatively warmer wall of the main body 2, until the gas flows into and then out of the casing of the gauge 35 for final discharge through outlet control valve 39.
  • a control system for discharge of gas from a reservoir of carbon dioxide liquid comprising a main body, first, second and third valve means for reducing gas pressure in successive stages, means providing gas flow, communication from said first valve means to saidsecond valve-means, an expansion chamber surrounding said second valve-means, means providing gas flow communication from said second valve means to said expansion chamber, means providing gas flow communication from said expansion chamber to said third valve means, a pressure reduction chamber connected with said third valve means, and a helical heat exchange passage within said main body and connected with said pressure reduction chamber.
  • a control system as claimed in claim 1 having a restrictive passage between said pressure reduction chamber and said helical heat exchange passage.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Fluid Pressure (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Details Of Valves (AREA)
US757953A 1968-04-27 1968-09-06 Control system for a gas discharger Expired - Lifetime US3548862A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP43028112A JPS4935298B1 (it) 1968-04-27 1968-04-27

Publications (1)

Publication Number Publication Date
US3548862A true US3548862A (en) 1970-12-22

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US757953A Expired - Lifetime US3548862A (en) 1968-04-27 1968-09-06 Control system for a gas discharger

Country Status (3)

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US (1) US3548862A (it)
JP (1) JPS4935298B1 (it)
DE (1) DE1805908B2 (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710810A (en) * 1970-05-27 1973-01-16 Nippon Steel Corp Method of cooling cut-off valve for high-temperature corrosive gas
US4349136A (en) * 1980-02-07 1982-09-14 Draft Systems, Inc. Safety pressure reducing regulator
US5277099A (en) * 1992-06-25 1994-01-11 Graco Inc. Reduced icing low friction air valve
US20030221726A1 (en) * 2002-05-30 2003-12-04 Roberto Semeia First stage pressure reducing valve having a tubular plug, particularly for regulators of scuba breathing apparatus
US20040200531A1 (en) * 2003-04-10 2004-10-14 Zuck James C. Adjustable pressure regulator
US20080213565A1 (en) * 2007-02-06 2008-09-04 World Properties, Inc. Conductive Polymer Foams, Method of Manufacture, and Uses Thereof

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645844A (en) * 1968-04-22 1972-02-29 Lodding Engineering Corp Mounting means for foil type and similar elements
CA1152041A (en) * 1980-12-18 1983-08-16 Eric L. Jensen Container pressurization system
DE29504622U1 (de) * 1995-03-17 1995-05-11 Arturo Salice S.P.A., Novedrate, Como Verbindungsbeschlag

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3710810A (en) * 1970-05-27 1973-01-16 Nippon Steel Corp Method of cooling cut-off valve for high-temperature corrosive gas
US4349136A (en) * 1980-02-07 1982-09-14 Draft Systems, Inc. Safety pressure reducing regulator
US5277099A (en) * 1992-06-25 1994-01-11 Graco Inc. Reduced icing low friction air valve
US20030221726A1 (en) * 2002-05-30 2003-12-04 Roberto Semeia First stage pressure reducing valve having a tubular plug, particularly for regulators of scuba breathing apparatus
US7398794B2 (en) * 2002-05-30 2008-07-15 Scubapro Europe S.R.L. First stage pressure reducing valve having a tubular plug, particularly for regulators of scuba breathing apparatus
US20080236587A1 (en) * 2002-05-30 2008-10-02 Scubapro Europe S.R.L. First Stage Pressure Reducing Valve Having A Tubular Plug, Particularly For Regulators Of Scuba Breathing Apparatus
US20040200531A1 (en) * 2003-04-10 2004-10-14 Zuck James C. Adjustable pressure regulator
US7051755B2 (en) * 2003-04-10 2006-05-30 Marshall Excelsior Company Adjustable pressure regulator
US20080213565A1 (en) * 2007-02-06 2008-09-04 World Properties, Inc. Conductive Polymer Foams, Method of Manufacture, and Uses Thereof
US7815998B2 (en) 2007-02-06 2010-10-19 World Properties, Inc. Conductive polymer foams, method of manufacture, and uses thereof

Also Published As

Publication number Publication date
DE1805908B2 (de) 1972-01-05
JPS4935298B1 (it) 1974-09-20
DE1805908A1 (de) 1969-12-18

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