US3891352A - Liquid-piston type slurry pumping system - Google Patents

Liquid-piston type slurry pumping system Download PDF

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Publication number
US3891352A
US3891352A US409809A US40980973A US3891352A US 3891352 A US3891352 A US 3891352A US 409809 A US409809 A US 409809A US 40980973 A US40980973 A US 40980973A US 3891352 A US3891352 A US 3891352A
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Prior art keywords
slurry
piston
operating fluid
containers
liquid
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US409809A
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English (en)
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Junya Tsukamoto
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Mitsubishi Metal Corp
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Mitsubishi Metal Corp
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Assigned to MITSUBISHI MATERIALS CORPORATION reassignment MITSUBISHI MATERIALS CORPORATION CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MITSUBISHI KINZOKU KABUSHIKI KAISHA, 5-2, OTEMACHI 1-CHOME, CHIYODA-KU, TOKYO-TO
Assigned to MITSUBISHI MATERIALS CORPORATION reassignment MITSUBISHI MATERIALS CORPORATION CHANGE OF ADDRESS Assignors: MITSUBISHI KINZOKU KABUSHIKI KAISHA, 5-2, OTEMACHI 1-CHOME, CHIYODA-KU, TOKYO-TO
Assigned to MITSUBISHI KINZOKU KABUSHIKI KAISHA reassignment MITSUBISHI KINZOKU KABUSHIKI KAISHA CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MITSUBISHI KINZOKU KOGYO KABUSHIKI KAISHA, 6, OTEMACHI 1-CHOME, CHIYODA-KU, TOKYO-TO
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/141—Intermediate liquid piston between the driving piston and the pumped liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L25/00—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means
    • F01L25/08—Drive, or adjustment during the operation, or distribution or expansion valves by non-mechanical means by electric or magnetic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/111—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members
    • F04B9/113—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers with two mechanically connected pumping members reciprocating movement of the pumping members being obtained by a double-acting liquid motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
    • F04B9/10—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid
    • F04B9/109—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers
    • F04B9/117—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other
    • F04B9/1172—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being liquid having plural pumping chambers the pumping members not being mechanically connected to each other the movement of each pump piston in the two directions being obtained by a double-acting piston liquid motor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F1/00—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped
    • F04F1/02—Pumps using positively or negatively pressurised fluid medium acting directly on the liquid to be pumped using both positively and negatively pressurised fluid medium, e.g. alternating
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/90—Slurry pumps, e.g. concrete

Definitions

  • a liquid-piston type slurry pumping system is composed of a rotary pump unit for delivering a pressurized operating fluid having a specific gravity different from that of the slurry, at least two valve boxes each having a suction valve and a delivery valve connected to a slurry pipe line, at least two liquid containers connected respectively to the valve boxes, passage means extending between the containers and the pump unit, means for changing over the passage means thereby to cause the operating fluid to flow alternately into the liquid containers, detecting means provided in each of the liquid containers for detecting excessive displacement of a boundary surface formed between the operating fluid and the slurry, and a controller for controlling the operation of the fluid-passage changeover means in response to a signal from the detecting means, whereby the movement of the boundary surfaces in the containers is controlled by the controller for stabilizing the operation of the pumping system.
  • This invention relates generally to liquid-piston type pumping systems to be used with liquids containing foreign materials and/or abrasive particles; such as muddy water or ore slurry, and more particularly to improvements in the pumping system.
  • a liquid-piston type pumping system which comprises a plunger pump and a liquid container through which the plunger pump is connected to a valve box having a suction valve and a discharge valve is known.
  • a liquid containing foreign materials and/or abrasive particles such as muddy water or ore slurry (hereinafter simply called a slurry)
  • an operating fluid such as oil, having a lower specific gravity than that of the liquid (or slurry) and being substantially immiscible with, insoluble in, and unreactive with, the slurry.
  • a distinct boundary surface is formed between the slurry, occupying the lower part of the container, and the operating fluid, which is immiscible with the slurry and occupying the upper part of the container, and the boundary surface is moved up suction valve and the discharge valve in the valve box connected to a slurry pipe line, and hence the slurry is pumped at a comparatively high pressure through the pumping system.
  • the plunger pump can be operated with an operating fluid absolutely free from abrasive particles and intrusion of the slurry into the plunger pump is effectively prevented by the provision of the liquid container
  • the plunger pump constituting an essential component of the conventional system requires a considerable size and weight when it is desired to increase the capacity of the pumping system, and the operation thereof is not sufficiently smoothand noiseless.
  • a volumetric relation must be maintained between the sizes of the valve box, liquid container,
  • Another object of the invention is to provide an improved liquidpiston type slurry pump system wherein the size and weight of the entire system can be substantially reduced, and the transportation and mounting thereof can be substantially facilitated.
  • Still another object of the invention is to provide an improved liquid-piston type slurry pump system wherein a rotary type pump unit can be used instead of a plunger type pump unit, whereby the delivery of the pump system can be varied without any trouble.
  • a further object of the invention is to provide an improved liquid-piston type slurry pump system, the es sential parts of which are available on the market, whereby the production cost of the pumping system can be substantially reduced.
  • an improved liquidpistion type slurry pump system comprising: a pump unit of a type continuously delivering a pressurized operating fluid of a specific gravity different from that of slurry to be pumped and being substantially immiscible with, insoluble in, and unreactive with the slurry; at least two valve boxes each having suction and discharge valves connected respectively to a slurry pipe line; at least two liquid container means respectively connected to the valve boxes; passage means connecting the containers and sais pump unit; means for changing over the passages extended [between the pump unit and the liquid container means thereby to introduce the operating fluid into the liquid container means alternately; detecting means provided in each of the container means for detecting any displacement in excess of a predetermined value of a boundary surface formed between the fluid and slurry coexisting in the container I means during operation of the pump system; and a controller for controlling the operation of the fluid-passage ings, wherein like parts are designated by like reference numerals and characters.
  • FIG. 1 is a diagram schematically showing a liquidpiston type slurry pump system constituting a first embodiment of the present invention
  • FIG. 2 is a diagram schematically showing another example of the 'liquid-piston type slurrypumpsystem constituting a second embodiment of the present invention
  • I FIG.'3 is a diagram showing a modification of the liquid container means constituting an essentialcomponent of the present invention.
  • FIG. 1 shows an example of the liquid-piston type slurry pump system according to the present invention
  • the valve box 1 has a suction valve 2 and a discharge valve 3, which are" connected with a suction pipe 4 and a discharge pipe 5 branched from a main slurry pipe line 6.
  • the valve box la has a suction valve 20 and a discharge valve 3a, which are connected to a suction pipe 411 and a discharge pipe 5a, respectively, both being also branched from the main slurry pipe line 6.
  • the slurry pump system further comprises two liquid container means 8 and 8a, each having two ports, one at the bottom and the other at an upper side thereof, and the valve boxes 1 and in are connected through pipes 7 and 7a to the bottom ports of the liquid container means 8 and 8a, respectively.
  • the interior of the two valve boxes 1 an 2 and the lower halves of the liquid containers 8 and 8a are filled with slurry X or the like introduced from the suction pipes 4 and 4a as the pump system is operated.
  • the upper side ports of the liquid containers 8 and 8a are further connected through pipes 9 and 9a to an electromagnetic changeover valve 10 which is in turn connected through a suction pipe 12 and a discharge pipe 13 to a pump unit ll of, for instance, a turbine type rotatable in a constant direction.
  • each of the liquid containers 8 and 8a and the interior of the electromagnetic valve 10 are filled with an operating fluid Y, such as oil. which does not mix with, dissolve in, or react with, the slurry to be pumped and has a lower specific gravity than that of the slurry. Since the lower half of each of the liquid containers 8 and 8a is filled with the slurry introduced through the valve boxes 1 and la from the main slurry pipe line, distinct boundary surfaces 14 and 14a are formed between the slurry X and the operating fluid Y in thecontainers 8 and 8a.
  • an operating fluid Y such as oil
  • detectors l5 and 15a for detecting variations of the boundary surfaces 14 and 14a in the liquid containers 8 and 8a.
  • a controller 16 is operated, and the electromagnetic changeover valve 10 is thereby activated as will be described more fully hereinafter.
  • the slurry pump system of this example operates as follows.
  • the electromagnetic changeover valve 10 is so positioned as shown in FIG. 1 that the suction pipe 12 and the discharge pipe 13 are connected with the pipes 9 and 9a, respectively
  • the operating fluid Y flows from the upper part of the liquid container 8 through the pipe 9, a passage of the changeover valve 10, the suction pipe 12, the rotary pump unit 11, the discharge pipe 13, another passage of the changeover valve 10, and a section of pipe 9a to the upper part of the liquid container 8a as indicated by solid line arrow marks in FIG. 1.
  • the boundary surface 14 in the liquid container 8 is elevated, and an additional quantity of the slurry is sucked from the suction pipe 4 into the valve box 1 and also into the lower half part of the liquid container 8.
  • the boundary surface 14a in the liquid container 8a is lowered, so that a part of the slurry X contained in the lower part of the container 8a is pushed out through the valve box la and the pipe 7a into the discharge pipe 5a and further into the delivery side of the main slurry pipe line 6.
  • the controller 16 When the bounda'rysurface 14 in the container 8 is further elevated until it contacts the tips of the detector 15, the controller 16 is operated, and the electromagnetic changeover valve 10 is transferred to another position wherein the operating fluid delivered from the rotary type pump unit 11 is passed in the direction indicated by the arrow-headed broken lines in FIG. I, and the boundary surface 14 is now pushed down and the boundary surface 14a is elevated in the respective liquid containers 8and 8a.
  • the slurry X contained in the lower part of the container 8 is thus driven toward the valve box 1, and a part thereof is delivered into the discharge pipe 5 and further into the main slurry pipe line
  • the controller 16 is again operated, and the electromagnetic valve 10 is thereby switched back to its original position wherein the operating fluid is circulated in the solid-line-arrow-marked direction shown in FIG. 1, whereby the slurry is discharged from the valve box la into the main discharge pipe line 6.
  • the liquid-piston type pump system of this example comprises at least a pair of valve box-liquid container assemblies and a changeover valve. Moreover since the operating fluid is passed through the changeover valve alternately into the liquid containers under the control of the controller, operable in response to the detected be used in the pumping system, whereby numerous advantageous features as described hereinbefore can be realized.
  • FIG. 2 Another example of the liquid-piston type slurry pump system is indicated in FIG. 2 wherein like parts as in the first embodiment are designated by'like reference numerals and characters. 7
  • the piston-cylinder device 20 is interposed between the changeover valve 10 and the liquid containers 8 and 8a.
  • the piston-cylinder device 20 comprises first and second cylinders 23 and 23a including pistons 24 and 24a, respectively, and third and fourth cylinders 26 and 26a including pistons 27 and 27a, respectively.
  • the pistons 24 and 27 are unitarily connected together through a rod 29, and the pistons 24a and 27a are also connected together in a unitary manner through another rod 29a.
  • an end of a pipe 25, the other end of which is connected towthe liquid container 8 is connected above the piston 27 includedin the third cylinder 26 and also to the fourth cylinder 26a below the piston 27a.
  • An endof a pipe 25a, and the other end of which is also Connected to the liquid container 8a, is connected tothe third cylinder 26, in the region below the piston 27-and tothe region above the piston 27a in the fourth'cylinder 26a.
  • a reservoir 30 is further provided on the suction side of the rotary pump unit P for supplying the operating fluid Y through the pump unitP, changeover valve 10, pipes 21 and 22, and through the interior of the cylinders 23 and 23a, while another kind of operating fluid Z, which does not mix with, dissolve in, or react with, the slurry X to be pumped and has a specific gravity lower than that of the slurry, is contained in the upper parts of the of the pistons 24 and 24a is sent back through the pipe 22 and the changeover valve to the reservoir 30 on the suction side of the pump unit 11.
  • the above-mentioned downward and upward movements of the pistons 27 and 27a, respectively, cause the suction of a part of the intermediate operating fluid Z from the upper part of the first container 8 through the pipe 25 into the spaces at the upper side and the lower side of the pistons 27 and 27a, respectively.
  • the boundary surface 14 in the container 8 is thereby elevated. and the slurry in the suction pipe 4 is thereby sucked into the valve box 1 and toward the lower part of the container 8.
  • the controller 16 is thereupon operated, the changeover valve it) thus being operated, whereby the first operating fluid Y is passed in a direction opposite to that in the above description, as indicated by arrow-headed broken lines.
  • the piston-cylinder device is provided between the changeover valve 10 and the liquid containers 8 and 8a, any possibility of undesirable components, such as abrasive particles and the like, contained in the slurry being mixed with the operating fluid Y can be completely eliminated. Furthermore, when the diameter of the first and second cylinders differs from the diameter of the third and fourth cylinders, the pressure and the delivery of the liquid-piston type slurry pump system can be changed.
  • the operational fluid Y since the operating fluid Y is acting on the slurry through the interposition of the second operational fluid Z of the above specified character, the operational fluid Y may be air or steam instead of a liquid substance, whereby a pump unit P in the form of an air turbine or a steam turbine may also be used in such a modification.
  • FIG. 3 there is illustrated still anotherembodiment of the present invention, wherein two pairs of liquid containers 18, E811, and 28 and 28a are added to the existing liquid containers 8 and 8a in FIG. I.
  • the containers 8, l8, and 28, and 8a, 18a, and 28a are connected in series, respectively, and three kindsof operating fluids Y, Z,, and Z are used therein, so that boundary surfaces 14, 14a, 31, 31a, 32, and 32a are formed between the slurry and the-operating fluid Z and between the operating fluids Z, and Z and Z and Y.
  • the operating fluid Z may be an oil, andltheoperating fluid Z may be, for instance, water.
  • The'boundary surface detectors 15 and 15a are providedin the liquid containers 28 and 2841 provided in the last stage.
  • any possibility of the slurry X mixing into the operating fluid'Y can be completely eliminated, and, furthermore, the possibility of the slurry X acting on the detectors l5 and 15a can be avoided.
  • water is selected as the operating fluid Z as described above, any trace of the slurry X which might have intruded. in the operating fluid Z can be easily removed by replacing the operating fluid Z since water, constituting the fluid Z is cheap.
  • a liquid-piston type slurry pumping system operable in a slurry pipe line, said systemcomprlsing: a pump unit of a type continuously delivering a pressurized operating fluid which is ofa specific gravity different from that of slurry to be pumped and is substantially immiscible with, insoluble in, and unreactive with th'e slurry; at least two valve boxes each including a suction valve and a discharge valve connected respectivelytot'he pipe line; at least a pair of liquid containers connected respectively to the vaive boxes; passage means connecting said containers and said pump unit; means for changing over said passages between the pumpiunit and the liquid containers, thereby to introduce the operating fluid into the liquid containers alternately; detecting means provided in each of the containers for detecting any displacement in excess of a predetermined value of a boundary surface formed between the fluid and the slurry coexisting in the containers; a controller for controlling the operation of the fluid-passage changeover means in response to signals from said detecting means, whereby the puls
  • a piston-cylinder device provided between the liquid containers and said fluid-passage changeover means, said device being comprised of means isolating the operating fluid from the slurry but trans mitting hydraulic displacement between the operating fluid and the slurry, first and third cylinders respectively including pistons connected together operatively, and second and fourth cylinders respectively including pistons connected together operatively, the first side of the piston in the first cylinder and the second side of the piston in the second cylinder being connected to a passage in said fluid passages changing over means, the second side of the piston in the first cylinder and the first side of the piston in the second cylinder being connected to another passage in said fluid passages changing over means, the first side of the piston in the third cylinder and the second side of the piston in the fourth cylinder being connected to one liquid container, the second side of the piston in the third cylinder and the first side of the piston in the fourth cylinder being connected to the other liquid container, said operating fluid occupying both sides of each of the first and second cylinders, and the interiors of the third and fourth
  • liquid-piston type slurry pumping system as set forth'in claim 1 wherein said operating fluid used in the pumping unit is a gas such as air or steam.
  • vliquid-piston type slurry pumping system for conducting a slurry through apipeline and including pumping means having a suction side and a pressure side and continuously delivering a pressurized operating fluid having a specific gravity lower than that of the slurry and substantially immiscible with, insoluble in.
  • valve boxes connected, respectively, to the pipeline in parallel relationship to each other and each including a suction valve and a discharge valve, at least one pair ofliquid containers respectively connected to said valve boxes, a boundary surface formed in each of said containers between operating fluid and slurry contained therein, passage means connecting said containers and said pumping means, means for changing over said passage means to alternatively introduce the operating fluid delivered from said pumping means into one of said containers, detector means for detecting a level of said boundary surface in each of said containers, and control means for controlling the operation of said changeover means in response to detection of the level by said detecting means, the improvements comprising:
  • said detector means for each container being comprised of means for detecting a displacement of said boundary surface beyond a predetermined raised level in the container, each container being connected at an upper portion thereof to said passage means;
  • said changover means being comprised of a single sliding changeover valve movable between a first position in which a first of said containers is connected to the suction side of said pumping means and a second container is connected to the pressure side and a second position in which said first container is connected to the pressure side of said pumping means and said second container is con nected to the suction side of said pumping means; said control means being adapted to shift said changeover valve from said first position to said second position when said boundary surface in said first container reaches said predetermined raised level, and from said second position to said first position when said boundary surface in said second container reaches said predetermined raised level; a piston-cylinder device interposed between said liq uid containers and said changeover valve, said piston-cylinder device separating said passage means into a first section containing a first operating fluid adapted to be pumped by said pumping means and a second section containing a second operating fluid, said boundary surface in each container being formed between said second operating fluid and the slurry, said piston-cylinder device is

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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US409809A 1972-11-02 1973-10-26 Liquid-piston type slurry pumping system Expired - Lifetime US3891352A (en)

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JP1972126937U JPS4982304U (it) 1972-11-02 1972-11-02

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US (1) US3891352A (it)
JP (1) JPS4982304U (it)
AU (1) AU472388B2 (it)
CA (1) CA985958A (it)
DE (1) DE2354238A1 (it)
FR (1) FR2205953A5 (it)
GB (1) GB1441010A (it)
IT (1) IT1003162B (it)
ZA (1) ZA738313B (it)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304527A (en) * 1976-08-17 1981-12-08 English Clays Lovering Pochin & Company Ltd. System for pumping an abrasive or corrosive fluid
US4378183A (en) * 1980-09-18 1983-03-29 The Pittsburgh & Midway Coal Mining Co. Apparatus and method for pumping hot, erosive slurry of coal solids in coal derived, water immiscible liquid
US4460318A (en) * 1982-08-13 1984-07-17 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for transferring slurries
US5073090A (en) * 1990-02-12 1991-12-17 Cassidy Joseph C Fluid piston compressor
US5074758A (en) * 1988-11-25 1991-12-24 Mcintyre Glover C Slurry pump
FR2711191A1 (fr) * 1993-10-13 1995-04-21 British Nuclear Fuels Plc Ensemble fluidique de pompage.
CN104913199A (zh) * 2015-04-24 2015-09-16 王才丰 一种用于油品输送的泵装置
US20150330419A1 (en) * 2012-12-16 2015-11-19 Dimitre Karamanev Compressed air energy storage system
US20160069359A1 (en) * 2013-04-12 2016-03-10 Edward John Hummelt Pressure vessel having plurality of tubes for heat exchange
US10408211B2 (en) 2013-07-12 2019-09-10 Eaton Intelligent Power Limited Hydraulic system for pressurization of gas with reduction of dead volume

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2906081A1 (de) * 1979-02-16 1980-08-21 Pleiger Maschf Paul Pumpe sowie schaltanordnung fuer eine pumpe
DE2910578A1 (de) * 1979-03-17 1980-09-25 Saarbergwerke Ag Verfahren zum foerdern von feststoffhaltigen fluessigkeiten auf erhoehten druck
GB8316332D0 (en) * 1983-06-15 1983-07-20 Gorog P Measuring haemotasis
US5290151A (en) * 1988-10-28 1994-03-01 Snamprogetti S.P.A. Process for pumping a multi-phase gas-liquid mixture by means of the use of a pump
IT1229858B (it) * 1988-10-28 1991-09-13 Snam Progetti Procedimento per il pompaggio di una miscela multifase gas liquido mediante l'impiego di una pompa
CN113700626A (zh) * 2021-09-07 2021-11-26 湖南嘉顺华新材料有限公司 一种稳定可靠的压力自动控制的泥浆柱塞泵

Citations (3)

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Publication number Priority date Publication date Assignee Title
US2419993A (en) * 1945-01-22 1947-05-06 Engineering Lab Inc Pumping mechanism
US3303786A (en) * 1963-04-08 1967-02-14 F N R D Ltd Hydraulic pumps
US3740166A (en) * 1971-01-28 1973-06-19 Tamagawa Kikai Kinzoku Kk Slurry pump of oil-diaphragm type

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419993A (en) * 1945-01-22 1947-05-06 Engineering Lab Inc Pumping mechanism
US3303786A (en) * 1963-04-08 1967-02-14 F N R D Ltd Hydraulic pumps
US3740166A (en) * 1971-01-28 1973-06-19 Tamagawa Kikai Kinzoku Kk Slurry pump of oil-diaphragm type

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304527A (en) * 1976-08-17 1981-12-08 English Clays Lovering Pochin & Company Ltd. System for pumping an abrasive or corrosive fluid
US4378183A (en) * 1980-09-18 1983-03-29 The Pittsburgh & Midway Coal Mining Co. Apparatus and method for pumping hot, erosive slurry of coal solids in coal derived, water immiscible liquid
US4460318A (en) * 1982-08-13 1984-07-17 The United States Of America As Represented By The United States Department Of Energy Apparatus and method for transferring slurries
US5074758A (en) * 1988-11-25 1991-12-24 Mcintyre Glover C Slurry pump
US5073090A (en) * 1990-02-12 1991-12-17 Cassidy Joseph C Fluid piston compressor
FR2711191A1 (fr) * 1993-10-13 1995-04-21 British Nuclear Fuels Plc Ensemble fluidique de pompage.
US20150330419A1 (en) * 2012-12-16 2015-11-19 Dimitre Karamanev Compressed air energy storage system
US20160069359A1 (en) * 2013-04-12 2016-03-10 Edward John Hummelt Pressure vessel having plurality of tubes for heat exchange
US10408211B2 (en) 2013-07-12 2019-09-10 Eaton Intelligent Power Limited Hydraulic system for pressurization of gas with reduction of dead volume
CN104913199A (zh) * 2015-04-24 2015-09-16 王才丰 一种用于油品输送的泵装置

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Publication number Publication date
AU472388B2 (en) 1976-05-20
ZA738313B (en) 1974-10-30
CA985958A (en) 1976-03-23
FR2205953A5 (it) 1974-05-31
IT1003162B (it) 1976-06-10
DE2354238A1 (de) 1974-05-16
AU6189873A (en) 1975-05-01
JPS4982304U (it) 1974-07-17
GB1441010A (en) 1976-06-30

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