US3355862A - Liquid-gas separator - Google Patents

Liquid-gas separator Download PDF

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Publication number
US3355862A
US3355862A US455484A US45548465A US3355862A US 3355862 A US3355862 A US 3355862A US 455484 A US455484 A US 455484A US 45548465 A US45548465 A US 45548465A US 3355862 A US3355862 A US 3355862A
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United States
Prior art keywords
chamber
valve
conduit
liquid
purging
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
US455484A
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English (en)
Inventor
Blanchet Andre Francois
Umbdenstock Pierre
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.)
Societe Anonyme pour Tous Appareillages Mecaniques SATAM
Original Assignee
S A T A M Sa Appareillages Mec
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
Priority claimed from FR974527A external-priority patent/FR1403836A/fr
Application filed by S A T A M Sa Appareillages Mec filed Critical S A T A M Sa Appareillages Mec
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Publication of US3355862A publication Critical patent/US3355862A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/0063—Regulation, control including valves and floats
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
    • F16K24/042—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float
    • F16K24/048—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float a transmission element, e.g. arm, being interposed between the float and the valve element, the transmission element following a non-translational, e.g. pivoting or rocking, movement when actuated

Definitions

  • the present invention pertains to devices for separating liquid and gaseous phases one from another, especially as applied to apparatus for the measured distribution of liquids, as for example in motor fuel pumping installations.
  • the outlet check valve for release of the separated gases (which may be air) is controlled by a float, either directly or through a motion amplifying device.
  • sensitivity of the separator is a function of the motion of the valve and of the pressure existing in the separator.
  • the gas outlet from the separator have such size that the influx of air or gas which occurs in starting and stopping the pump shall be evacuated to the exterior without producing a high pressure. It is likewise necessary for this opening to permit, in the case of accidental arrival of air or gas, passage of a certain quantity of liquid entrained with the separated gases in the form of a mist or form.
  • the smaller the volume of the separator the larger the quantity of foam which must so be passed. The consequence is that in the separators of the prior art, it is necessary to provide a recovery vessel or purge vessel having a large capacity, appropriate to the rate at which liquids and gases are to be separated.
  • a gas separator comprising an auxiliary chamber which is separated from the adjacent degassing or separating chamber per se by a partition including, in one preferred embodiment of the invention, one or more deformable components.
  • This auxiliary chamber communicates through suitable orifices of unlike size with the separating chamber and with a closed chamber or vessel at atmospheric pressure.
  • a float controls one of these openings to the auxiliary chamber in such fashion that the differences of pressure which are developed between the auxiliary chamber and the separating chamber cause motions of the deformable partition element or elements, these latter in turn controlling the outflow of gas and of foam or emulsions.
  • one of the deformable partition elements controls the outgoing passage of gas towards the purging vessel and a second deformable element controls communication between the gas outlet and the source of supply.
  • FIG. 1 is a diagrammatic sectional view of a first form of separator according to the present invention
  • FIG. 2 is a diagrammatic sectional view of the upper part of a separator according to the invention, with the elements shown in the position occupied by them before starting of the pump;
  • FIG. 3 is a view similar to that of FIG. 2, with the elements shown in the positions which they occupy when the air contained in the separator is expelled into the purging chamber by the arrival of liquid in the separating chamber;
  • FIG. 4 shows the elements of FIG. 2 during normal flow delivery rate
  • FIG. 5 shows the position of these elements when the gases are flowing partly toward re-aspiration by the pump and partly toward the purging chamber
  • FIG. 6 is a fragmentary sectional diagram of a separator according to the invention having a single outlet for the gases toward the purging chamber;
  • FIG. 7 is a diagram similar to that of FIG. 6 but showing the check-valve in closed position.
  • the separating chamber proper In the separator shown in FIG. 1, the separating chamber proper, 1, communicates at its upper portion with a control chamber 2 via an opening 5. This opening is controlled by a valve 6 coupled to float 7 which is pivoted on an axis 7a, such that valve 6 is opened when the float is lifted by a rising level of liquid in chamber 1.
  • the auxiliary chamber 2 communicates continuously with a purging chamber 3 via a conduit 4 of specified cross section which is smaller than that of the opening 5.
  • the auxiliary chamber 2 is closed at its lower limit (and thereby separated from chamber 1) by a wall 17' including two diaphragms or membrances 8 and 9 which respectively carry valves 10 and 11.
  • the valve 10 is subjected to the action of a spring 12, tending thereby to close a conduit 14 which leads to the inlet chamber 20 on the low pressure side of a pump 18, which pump is destined to eflect the flow of liquid from which entrained gases are to be separated, for example prior to delivery to a volumetric meter.
  • the valve 11 on the diaphragm 9 is subjected to the action of a spring 13 which tends to close an opening 15 through which, when open, communication may be had directly between the separating and purging chambers 1 and 3.
  • Communication between the chamber 1 and the purging vessel 3 may thus occur in part via the orifice 15 and in part through the auxiliary chamber 2 via opening 5 and conduit 4.
  • the pump 18 aspirates the fluid from a source of supply into the chamber 20 via a filter 19 and a conduit 32 leading to a supply reservoir, not shown.
  • the pump 18 delivers the liquid through a conduit 21, open at its upper end, to the upper part of the chamber 1.
  • a bypass 22 makes it possible to control the pressure output produced by the pump.
  • the purging chamber 3 contains a float 23. This float controls a valve 24 at the orifice 25 in chamber 3 of a conduit 26, the other end of which communicates with the low pressure side of the pump through a check valve 27. Valve 27 is held closed by a spring 28, but opens under eifect of a negative pressure in the aspiration chamber 20. Valve 24 is opened when float 23 is lifted by liquid in chamber 3.
  • the purging chamber 3 communicates freely with the atmosphere via conduit 29 opening at the upper part of this chamber.
  • the liquid delivered by the pump and freed from gases is directed toward the metering device through a conduit 30 which has its opening at the lower part of the separating chamber 1.
  • the mode of operation of the apparatus is as follows:
  • the check valves 10 and 11 respectively close the conduit 14 and opening 15.
  • the float 7 will be in its lower position and the valve 6 will therefore close the opening which provides communication between chambers 1 and 2. Any excess of pressure in chamber 1 over that in chamber 2 is exerted on the diaphragms 8 and 9 through the openings 16 and 17 in the lower wall 17 of chamber 2.
  • the spring 13- of the valve 11 is dimensioned as a function of the diaphragm 9 so as to open with a low pressure exerted on that diaphragm.
  • the spring 12 of the valve is dimensioned so that with due regard for the negative pressure which can exist in line 14, the valve 10 will remain closed so long as the liquid has not filled the chamber 1.
  • the air, gases and emulsion which pass through the conduit 14 thus by-pass thepurging chamber, which receives only a part of such air, gases and emulsion.
  • the fraction flowing through the conduit 14 is redelivered by the pump to the chamber 1.
  • the elimination of the air, gas or emulsion efiecte'd in the purging chamber 3 is distributed over a longer period of time than would be the case if the conduit 14 were not provided. It is thus possible to reduce the size of the purging chamber 3. In addition the degree of gas or air separation is improved.
  • the chamber 1 of the separator has disposed above it an auxiliary chamber 2 which communicates with the purging vessel 3, again not shown, through a tube 5 of appropriate cross section and also with the separating chamber 1 through a calibrated opening 4, the opening 4 being of smaller section than the conduit 5.
  • Conduit 5 is controlled by a valve 6 operated by the float 7, so pivoted that conduit 5 is closed by valve 6 when the liquid in chamber 1 lifts the float.
  • the chamber 2 is closed at its upper end by means of two pistons 8 and 9 which function as valves; the valve 8 controls an opening 10 between the chamber 1 (at 16) and a conduit 14 which connects directly to the low pressure side of the pump as in FIG. 1.
  • the valve 9 controls an opening 15 between the chamber 1 (at 17) and the purging vessel via a conduit 33 of large size.
  • the conduit 5 controlled by the valve 6 opens into the conduit 33.
  • the valves 8 and 9 are subjected to the action of separate springs 12 and 13 which tend to hold them in closed position.
  • valves 8 and 9 are also subjected on their underside and over the complete cross section thereof to the pressure which exists in the chamber 2, and they are subjected on the upper side thereof over an annular portion of their surface, excluding the openings 10 and 15, to the pressure in chamber 1.
  • the pressure in chamber 1 reaches the outer annular upper surface of the valves 8 and 9 through the openings 16 and 17.
  • FIGS. 2 to 5 operates as follows: when the apparatus is at rest, i.e., before the pump is started, the valves 8 and 9 are held in closed position by their respective springs 12 and 13, closing off chamber 1 from conduits 14 and 33. The float 7 is in lowered position so that the valve 6 is open, leaving the orifice 5 likewise open.
  • valves 8 and 9 no supra-atmospheric pressure is exerted on the underside of valves 8 and 9.
  • the air pressure existing in the chamber 1, above atmospheric operates on the annular portion of the upper side of valves 8 and 9 through the openings 16 and 17'.
  • the spring 13 is dimensioned to permit the valve 9 to open for a low net air pressure exerted thereon.
  • the spring 12 is so dimensioned that having due regard for the negative pressure existing in the conduit 14 when the pump is operating, the valve 8 remains closed so long as the liquid has not filled the chamber 1.
  • the pressure of the air delivered into the chamber 1 effects opening of the valve 9, and the air escapes freely from chamber 1 through openings 17, 15 and conduit 33 toward the purging vessel, as indicated in FIG. 3'.
  • the communication between the chamber 1 and the purging vessel 3 includes in each an auxiliary chamber 2 open at one end to the main chamber 1 and at the other end to the purging chamber 3, with communication between the auxiliary chamber and one of chambers 1 and 3 via a small orifice 4, and between the auxiiiary chamber and the other of the chambers 1 and 3 via a larger orifice 5 controlled by a floatoperated valve 6.
  • a direct access valve 1K in FXGS. 1' and 9 in FIGS. 2 to 5, which when open provides direct access between the chambers 1 and 3, bypassing the auxiliary chamber.
  • the conduit 33 of FIGS. 2 to 5 being of large cross section, that conduit is equivalent to the interior of the chamber 3 of that embodiment, not shown.
  • this direct access valve is subjected on one side to the pressure in chamber 2, and on the other side to the pressure in chamber 1.
  • the small opening 4 is at the downstream end of the auxiliary chamber, in the sense of flow from the separating chamber through the auxiliary chamber to the purging chamber, and the float is arranged to close the large opening 5 at the upstream end when the float is in the lower position, i.e., for a low level of liquid in chamber 1.
  • the small opening 4 is at the upstream end of chamber 2, and the float is arranged to close the large opening 5 at the downstream end of that chamber when the float is raised, i.e., for a high level of liquid in the separating chamber 1.
  • FIGS. 6 and 7 show a simplified form of separator in accordance with invention having a single outlet 15 for the gases leading to the purging vessel 3, and it shows in further detail the arrangement of the deformable elements, provided in this case by the diaphragm 9, valve 11 and spring 13 of the auxiliary chamber 2.
  • the chamber 1 of the separator is connected to the purging chamber 3 via a conduit 15 which may be closed by means of a valve 11.
  • Valve 11 is supported on the diaphragm 9, one of whose faces is in permanent, direct communication with the chamber 1. The other face is subjected to the pressure existing in the auxiliary chamber 2.
  • Chamber 2 communicates with the chamber 1 via an opening 5 and with the purging vessel 3 via a conduit 4.
  • the cross section of the conduit 4 is smaller than that of the opening 5.
  • the latter may be closed by means of a valve 6 controlled by a lever which is pivoted at 7a and coupled to a float 7.
  • a valve 6 controlled by a lever which is pivoted at 7a and coupled to a float 7.
  • the size of the opening 5 being larger than the cross section of the conduit 4, the passage of the foam formed by the air and liquid is retarded due to the small size of the conduit 4 compared to the passage 5.
  • the pressure in the chamber 2 is the same as that existing in the separating chamber 1 while valve 6 is open.
  • the spring 13 will therefore hold the valve 11 in position to close the conduit 15 so long as the valve 6 leaves the opening 5 open.
  • the invention provides separating apparatus in which gases (including of course air) or foams or emulsions are separated from liquid in a separating chamber.
  • gases including of course air
  • foams or emulsions pass out of the separating chamber (preferably into a settling or purging chamber in which the liquid constituent of the foam or emulsion may be recovered.) through a valve 01 large flow capacity which is operated by the difference in pressure between the separating chamber and an auxiliary chamber.
  • the large flow capacity valve hereinabove sometimes called a direct access valve, is springloaded to closed position and is opened by an excess of pressure in the separating chamber over that in the auxiliary chamber.
  • the auxiliary chamber connects through separate conduits, preferably of unlike flow section, with theseparating chamber and with the exterior of the separating chamber (preferably the purging chamber, if one is provided).
  • One of these conduits is opened and closed by the movement of a control valve responsive, as by action of a float, to changes in liquid level in the separating chamber so that as long as the float is not lifted by liquid in the separating chamber, a higher pressure can be built up by the pump in the separating chamber than in the auxiliary chamber. This higher pressure opens the large flow capacity valve as necessary to permit gases, foams or emulsions accumulated at the upper part of the separating chamber to flow out into the purging cham-her.
  • the large flow capacity valve is built into a diaphragm or flexible portion of the wall separating the separating and auxiliary chambers, whereas in another embodiment (that of FIGS. 2 to 5) the large flow capacity valve (9) slides in suitable guides.
  • Apparatus for degasifying liquids comprising a separating chamber having an inlet and a liquid outlet, an
  • Apparatus for degasifying liquids comprising a separating chamber having an inlet and a liquid outlet, an auxiliary chamber, a purging chamber, a pump having an intake and having a discharge connected to said inlet, a. first conduit between the separating and auxiliary chambers, a second conduit of lesser flow resistance than said first.
  • conduit between the auxiliary and purging chambers, a first valve in said second conduit, a second valve between the separating and purging chambers, a third valve between the separating chamber and pump intake, means responsive to a rise in liquid level in said separating chamber to close said first valve, means responsive to a pressure in said separating chamber higher by a first amount than the pressure in said auxiliary chamber to open said second valve, and means responsive to a pressure in said separating chamber higher by a larger amount than the pressure in said auxiliary chamber to open said third valve.
  • an apparatus for degasifying liquids having a pump, a separating chamber provided with an inlet for liquid to be degasified, an outlet for degasified liquid, a gas and foam outlet to a purging chamber, and a gas and. foam outlet to the suction side of the pump, the improvement which comprises an auxiliary chamber, a conduit between the separating and auxiliary chambers, a conduit between the auxiliary and purging chambers, said conduits having unlike resistance to fiow, a first valve in the one of said conduits of lesser resistance to flow, a second valve controlling the gas and foam outlet to the purging chamber, a third valve controlling the gas and foam outlet to the suction side of the pump, means responsive toliquid level in the separating chamber to control said first valve, first resilient means biasing said second valve to closed position and permitting said second valve to open for a first excess of presusre in said separating chamber over said auxiliary chamber, and second resilient means biasing said third valve to closed position, said second resilient means permitting said third valve to open for a second excess of pressure in said
  • Apparatus according to claim 3 wherein the one of said conduits of lesser resistance to flow is between the auxiliary and purging chambers and wherein said means repsonsive to liquid level close said first valve upon rise in said liquid level above a predetermined limit.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Degasification And Air Bubble Elimination (AREA)
US455484A 1964-05-14 1965-05-13 Liquid-gas separator Expired - Lifetime US3355862A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR974527A FR1403836A (fr) 1964-05-14 1964-05-14 Séparateur des gaz entraînés par des liquides
FR980612A FR1427656A (fr) 1964-05-14 1964-07-03 Séparateur de gaz entraînés par des liquides

Publications (1)

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US3355862A true US3355862A (en) 1967-12-05

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US455484A Expired - Lifetime US3355862A (en) 1964-05-14 1965-05-13 Liquid-gas separator

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Country Link
US (1) US3355862A (enrdf_load_stackoverflow)
FR (1) FR1427656A (enrdf_load_stackoverflow)
GB (2) GB1047576A (enrdf_load_stackoverflow)
NL (1) NL6505619A (enrdf_load_stackoverflow)
SE (1) SE301956B (enrdf_load_stackoverflow)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643406A (en) * 1970-02-18 1972-02-22 Phillips Petroleum Co Sample scrubber
US4000989A (en) * 1975-11-24 1977-01-04 M & J Valve Company Method and apparatus for eliminating air from liquid flow streams
US4293300A (en) * 1979-01-15 1981-10-06 Officine Augusto Cattani & C. S.A.S. Liquid separating and evacuating device for fluid suction equipment
US5119790A (en) * 1990-07-12 1992-06-09 Outboard Marine Corporation Fuel feed system
US7947100B1 (en) 2009-12-15 2011-05-24 Gast Manufacturing, Inc. Combination vertical rotary vane suction pump and liquid separator
US20130098451A1 (en) * 2011-10-21 2013-04-25 David Scott Krug Pressure regulating float valve
US11358732B2 (en) * 2015-02-05 2022-06-14 Zodiac Aerotechnics Anti-overpressure fuel tank

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3543674C1 (de) * 1985-12-11 1987-06-19 Gestra Ag Kondensatableiter
WO2017185156A1 (pt) * 2016-04-26 2017-11-02 Palacios Barrasús José Ignácio Sistema automatizado para pasteurização de alimentos e eliminação de patógenos e conjunto automatizado para garantir vapor saturado seco na peletização

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1119980A (en) * 1912-03-04 1914-12-08 S F Bowser & Co Inc Automatic air-relief valve for liquid systems.
US1957910A (en) * 1932-08-17 1934-05-08 Service Station Equipment Comp Liquid dispensing apparatus
US2171707A (en) * 1938-10-21 1939-09-05 Gilbert & Barker Mfg Co Liquid dispensing apparatus
US2194843A (en) * 1938-02-25 1940-03-26 Tokheim Oil Tank & Pump Co Liquid dispensing apparatus
US2213857A (en) * 1937-09-08 1940-09-03 Sf Bowser & Co Inc Pumping and separating mechanism
US2258497A (en) * 1939-07-15 1941-10-07 Wayne Pump Co Air separator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1119980A (en) * 1912-03-04 1914-12-08 S F Bowser & Co Inc Automatic air-relief valve for liquid systems.
US1957910A (en) * 1932-08-17 1934-05-08 Service Station Equipment Comp Liquid dispensing apparatus
US2213857A (en) * 1937-09-08 1940-09-03 Sf Bowser & Co Inc Pumping and separating mechanism
US2194843A (en) * 1938-02-25 1940-03-26 Tokheim Oil Tank & Pump Co Liquid dispensing apparatus
US2171707A (en) * 1938-10-21 1939-09-05 Gilbert & Barker Mfg Co Liquid dispensing apparatus
US2258497A (en) * 1939-07-15 1941-10-07 Wayne Pump Co Air separator

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643406A (en) * 1970-02-18 1972-02-22 Phillips Petroleum Co Sample scrubber
US4000989A (en) * 1975-11-24 1977-01-04 M & J Valve Company Method and apparatus for eliminating air from liquid flow streams
US4293300A (en) * 1979-01-15 1981-10-06 Officine Augusto Cattani & C. S.A.S. Liquid separating and evacuating device for fluid suction equipment
US5119790A (en) * 1990-07-12 1992-06-09 Outboard Marine Corporation Fuel feed system
US7947100B1 (en) 2009-12-15 2011-05-24 Gast Manufacturing, Inc. Combination vertical rotary vane suction pump and liquid separator
US20110143311A1 (en) * 2009-12-15 2011-06-16 Gast Manufacturing, Inc. Combination vertical rotary vane suction pump and liquid separator
US20130098451A1 (en) * 2011-10-21 2013-04-25 David Scott Krug Pressure regulating float valve
US8596289B2 (en) * 2011-10-21 2013-12-03 The Boeing Company Pressure regulating float valve
US11358732B2 (en) * 2015-02-05 2022-06-14 Zodiac Aerotechnics Anti-overpressure fuel tank

Also Published As

Publication number Publication date
FR1427656A (fr) 1966-02-11
GB1052616A (enrdf_load_stackoverflow)
GB1047576A (en) 1966-11-09
NL6505619A (enrdf_load_stackoverflow) 1965-11-15
SE301956B (enrdf_load_stackoverflow) 1968-07-01

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