WO1993006370A1 - Dispositif de pompage - Google Patents

Dispositif de pompage Download PDF

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Publication number
WO1993006370A1
WO1993006370A1 PCT/AU1992/000500 AU9200500W WO9306370A1 WO 1993006370 A1 WO1993006370 A1 WO 1993006370A1 AU 9200500 W AU9200500 W AU 9200500W WO 9306370 A1 WO9306370 A1 WO 9306370A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
transmission
pumping
piston
location
Prior art date
Application number
PCT/AU1992/000500
Other languages
English (en)
Inventor
Neville Arthur King
Noel William King
Original Assignee
Neville Arthur King
Noel William King
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 Neville Arthur King, Noel William King filed Critical Neville Arthur King
Publication of WO1993006370A1 publication Critical patent/WO1993006370A1/fr

Links

Classifications

    • 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
    • F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
    • F04B47/06—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth
    • F04B47/08—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps having motor-pump units situated at great depth the motors being actuated by fluid
    • 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

Definitions

  • This invention relates to pumps and a method of pumping.
  • the invention has particular but not exclusive application to pumps for use in boreholes and for illustrative purposes reference will be made to such application. However, it is to be understood that the invention could be used in other applications, for example, where the pumping energy is to be located remote from the source of fluid being pumped, such as in pumping water from tanks, rivers, wells or such like or in marine applications.
  • the invention has particular application to pumping of water, however, other aqueous and non-aqueous liquids such as oil and such like or other fluids such as gases may be pumped using the invention.
  • Such pumps are usually one of two types, both of which are subject to disadvantages.
  • the first type has the pump installed at or near the bottom of the borehole and electrical power is transmitted by cables to the pump from the surface.
  • a disadvantage of this type of pump is due to the power losses in the cables which result in a loss in pump efficiency. The efficiency decreases with the increase in the depth of the borehole/cable length.
  • the electrical components of such pumps must be sealed and carefully isolated from contact with moisture and the water to avoid short circuits and the like.
  • the second type has the power unit positioned at ground level and mechanical power is transmitted to the pump usually by a rotating drive shaft from the head of the borehole to the pump at or near the bottom of the borehole.
  • a disadvantage of this type of pump is due to the drive shaft torsion which results in a loss of pump efficiency. The efficiency decreases with increase in borehole depth/length of drive shaft. Windmills are difficult to service and lifting rods are costly to replace.
  • a flexible column may be substituted for the lifting rod or rods, but these are limited in gauge and the amount of lift.
  • the present invention aims to alleviate at least one of the above disadvantages and to provide a pump, pump apparatus and a pumping method which will be reliable and efficient in use. Other objects and advantages of this invention will hereinafter become apparent.
  • this invention in one aspect resides broadly in fluid pressure activated pumping means including:- first inlet means and a irst chamber in fluid connection therewith and having non-return means preventing fluid backflow from the first chamber to the first inlet means; second inlet means and a second chamber in fluid connection therewith and having non-return means preventing fluid backflow from the second chamber to the second inlet means; a first transmission port for alternately transmitting drive pressure fluid to activate the pumping means and to deliver fluid to delivery means, and a first transmission plenum in fluid connection therewith; a second transmission port for alternately transmitting drive pressure fluid to activate the pumping means and to deliver fluid to delivery means, and a second transmission plenum in fluid connection therewith; fluid displacement means sealingly and displaceably disposed between the first and the second chambers; and non-return means preventing fluid flow from the first plenum to the first chamber and from the second plenum to the second chamber.
  • the fluid displacement means is in the form of piston means mounted for reciprocal movement from one position where it is adapted to urge fluid from the first chamber to the first transmission port via the first plenum, to another position where it is adapted to urge fluid from the second chamber to the second transmission port via the second plenum.
  • the piston means may be provided with telescopic means to guide the reciprocal movement, and may include limit or stop means to limit the reciprocal movement of the piston.
  • a telescopic member may be provided at each end of the piston, one of the telescopic members providing fluid communication between one side of the piston and the first plenum, and the other of the telescopic members providing communication between the other side of the piston and the second plenum.
  • this invention resides broadly in pump apparatus for pumping a fluid between a fluid intake location and a fluid delivery location, the pump apparatus including:- drive means for positioning at the delivery location for generating fluid pressure; fluid pressure actuated pumping means for positioning at the fluid intake location and adapted to be actuated by the fluid pressure generated by the drive means to pump fluid from the fluid intake location to the fluid delivery location, and fluid transmission means for transmission of the fluid pressure between the drive means and the pumping means and for delivery of pumped fluid from the fluid intake location to the fluid delivery location.
  • the pumping apparatus is particularly suitable for use where the fluid intake location is remote from the fluid delivery location, for example when raising water from a borehole, river or underground reservoir.
  • the pumping means is preferably located proximate the fluid source, for example at or near the bottom of a borehole, and the drive means for generating the fluid pressure is preferably located proximate the fluid delivery location, for example at or near the top of a borehole.
  • the drive means may include dual fluid pressure generating cycle means and the pumping means may include complementary dual pumping cycle means.
  • the fluid transmission means may include complementary dual transmission means whereby fluid pressure from the drive means may be transmitted through one portion of the transmission means and fluid delivered by the pump delivered through another portion. The respective portions may alternate according to the dual cycles of the pumping means and the drive means.
  • the drive means may include any power supply means such as an electric motor or an internal combustion engine, thus any suitable power source conveniently available to the site of the pumping means may be utilised.
  • the power supply means may be adapted to drive any suitable fluid pressure generating means.
  • the dual fluid pressure generating cycle of the drive means may be effected by a power driven pump adapted to deliver fluid pressure to the fluid pressure actuated pumping means.
  • the drive pump may be provided with two transmission ports for connection with the dual fluid transmission means and a fluid delivery port.
  • the power driven pump includes a reciprocating piston/cylinder arrangement with the two transmission ports being located at opposite ends of the cylinder and the delivery port being located between the two transmission ports.
  • this invention resides broadly in a method of pumping a fluid between a fluid intake location and a fluid delivery location, the method including:- providing drive means proximate the fluid delivery location for generating fluid pressure; providing fluid pressure actuated pumping means proximate the fluid intake location adapted to be actuated by the fluid pressure generated by the drive means, and providing fluid transmission means for transmission of the fluid pressure between the drive means and the pumping means and for delivery of pumped fluid from the fluid intake means to the fluid delivery means.
  • FIG 1 is a schematic diagram of the embodiment of the invention for pumping water from a borehole
  • FIG 2 is a schematic diagram of a slave pump of the embodiment during a down-stroke portion of the pumping cycle
  • Fig 3 is a schematic diagram of the slave pump during an up stroke portion of the pumping cycle
  • FIGS 4 and 5 are sectional front views of a main pump of the embodiment during an up-stroke portion of the pumping cycle
  • FIGS 6 and 7 are sectional front views of the main pump during a down stroke portion of the pumping cycle
  • FIG 8 is a sectional plan view of the main pump taken along the lines AA of FIG 4;
  • FIG 9 is a sectional plan view of the main pump taken along the lines BB of FIG 4;
  • FIG 10 is a sectional plan view of the main pump taken along the lines CC of FIG 4;
  • FIG 11 is a sectional plan view of the main pump taken along the lines DD of FIG 4;
  • FIG 12 is a sectional plan view of the main pump taken along the lines EE of FIG 4.
  • FIG 13 is a perspective view of the main pump piston assembly and associated components.
  • pump apparatus 10 has a fluid pressure actuated submersible main pump 11 located proximate the bottom of a borehole 12.
  • the main pump is operatively connected to a pressure generating slave pump 13 located at ground level 14 by a fluid transmission assembly 15, for elevating water 16 from the borehole 12 to ground level.
  • the pressure generating slave pump 13 has a power driven drive shaft 20 operatively connected to a piston 21 which is in sliding reciprocal relationship with a pump cylinder 22.
  • the cylinder 22 is in sealing engagement with the piston 21, the sealing being effected by a pair of replaceable piston sealing rings 23 and 24.
  • the drive shaft 20 is sealed with respect to the cylinder 22 by a shaft seal 25.
  • the pressure generating pump 13 further includes a down-stroke port 26 and an up-stroke port 27 which lead to a transmission line 28 and a transmission line 29 respectively.
  • a delivery port 30 substantially central to the up-stroke and down-stroke displacements of the piston 21 is in fluid connection with a delivery connection 31.
  • the fluid pressure actuated main pump 11 has a cylindrical outer casing 41 surrounding and spaced apart from a pump cylinder 42 to form an annular passage 43 therebetween.
  • the outer casing and piston cylinder are fixedly interconnected with respect to each other by an upper sealing plug 44 and a lower sealing plug 45.
  • the down-stroke line 28 of the slave pump is operatively connected to a first transmission port tube 50 of the main pump which is connected by a screwthread connection to upper sealing plug 44 and in fluid connection with a first plenum 51.
  • the first plenum 51 is in one-way fluid connection with a first annular chamber 52 whereby fluid is prevented from flowing from the first plenum 51 to the first chamber 52 by a pair of one-way exhaust flap valves 53 and 54 mounted on a first chamber fixed sealing disc 55 located at the top of the first chamber 52.
  • the up-stroke line 29 of the slave pump is operationally connected to a second transmission port tube 56 also connected by a screwthread to the upper sealing plug 44 and in fluid connection via upper apertures 57 provided in the piston cylinder 42, annular passage 43 and lower apertures 58 provided in the piston cylinder, with a second plenum 61.
  • the second plenum 61 is in one-way fluid connection with a second chamber 62 whereby fluid is prevented from flowing from the second plenum to the second chamber 62 by a pair of one-way exhaust flap valves 63 and 64 mounted on second chamber fixed sealing disc 65 located at the bottom of the second chamber 62.
  • a main pump piston assembly 70 is disposed within the cylinder 42 and is mounted for reciprocal sliding movement from an upper position as shown in FIGS. 4 and 5 to a lower position as shown in FIGS. 6 and 7 and vice versa.
  • the piston assembly 70 includes a hollow piston 71 which is sealed against the cylinder 42 by a pair of replaceable piston rings 72 and 73 located in corresponding annular grooves formed in the piston outer wall.
  • the hollow piston 71 is separated into upper portion 74 and lower portion 75 by a central wall 76, each portion being connected by a screwthread connection to a respective tubular piston rod 80 and 81 which slideably engages on upper and lower piston telescopic tubes 82 and 83 respectively.
  • the upper and lower telescopic tubes are provided with respective stop flanges 84 and 85 to limit the travel of the piston, and are connected at their ends remote from the piston by a screwthread connection to the first chamber fixed sealing disc 55 and the second chamber fixed sealing disc 65 respectively.
  • the first chamber 52 is sealingly isolated from the second chamber 62 by the piston wall 76, opposite sides of which communicate through the upper and lower telescopic tubes 82 and 83 with the first and second plenums 51 and 61 respectively.
  • the first chamber 52 is in one-way fluid connection with a pair of first inlet port tubes 90 ( as best seen in FIG 5) provided with mesh filters 91 to filter any debris from the incoming water.
  • the one-way fluid connection being effected by a pair of first chamber inlet flap valves 92 located on the undersides of the tubes 90.
  • the tubes 90 extend through and are connected by screwthread connections to upper plug 44 and first chamber fixed sealing disc 55.
  • the second chamber 62 is in one-way fluid connection with a pair of second inlet port tubes 96 provided with a single mesh filter 97.
  • the one-way fluid connection being effected by a pair of inlet flap valves 98 located at the top of the tubes 96.
  • the tubes 96 extend through and are connected by screwthread connections to lower plug 45 and second chamber fixed sealing disc 65.
  • the apparatus of the invention may be formed of any suitable material or combination of materials depending upon the particular application.
  • the materials may be selected for their surface smoothness, strength, weight, fabrication and/or anti-corrosive properties.
  • the majority of the components of the apparatus are formed of stainless steel tubing and the pistons, plugs, sealing discs and seals are formed of suitable plastics and/or rubber materials.
  • the up-stroke (FIGS 3,4 and 5) is effected as follows:-
  • the slave pump piston 21 is driven to expel excess water in the pump cylinder 22 through the delivery port 30.
  • hydraulic fluid pressure is applied through the up-stroke port 27 and down the transmission line 29 to the main pump second transmission port tube 56, through piston cylinder upper aperture 57 , through the annular passage 43, through piston cylinder lower aperture 58 and into the second plenum 61.
  • This hydraulic fluid pressure closes the exhaust flap valves 63, 64 and is applied through the bottom telescopic tube 83, against the piston wall 76 to urge the piston upwardly.
  • the first chamber exhaust flap valves 53, 54 open and the first chamber inlet flap valves 92 close.
  • the water in the first chamber 52 is transferred via the first transmission port tube 50 to the transmission line 28 through the down-stroke port 26 and out the delivery port 30 and delivery connection 31.
  • the second chamber inlet flap valves 98 open filling the second chamber 62 with water to be pumped on the down-stroke. chamber 62 with water to be pumped on the, down-stroke.
  • the slave pump piston 21 is driven to expel water in th pump cylinder 22 through the delivery port 30.
  • hydraulic flui pressure is applied through the down-stroke port 26 and dow the transmission line 28 to the main pump first transmissio port tube 50 to the first plenum 51.
  • This hydraulic flui pressure closes the exhaust flap valves 53 and urges the mai pump piston assembly 70 downward by acting on the piston wal 76 via the top telescopic tube 82.
  • the second chambe exhaust flap valves 63,64 open and the inlet flap valves 9 close.
  • the water in the second chamber 62 is transferred vi the second plenum 61, cylinder lower aperture 58, annula passage 43, cylinder upper aperture 57, second transmissio port tube 56, transmission line 29, up-stroke port 27 delivery port 30 and finally delivery connection 31.
  • the first chamber inlet flap valves 92 ope filling the first chamber 52 with water to be pumped on th up-stroke.
  • the effective piston area can be varied to modif pressure distribution throughout the hydraulic system b changing the diameter of piston rods 80 and 81.
  • Transmissio lines 28 and 29 are suitably reinforced to withstan pressures generated during operation in accordance with the pump configuration and operating conditions.
  • the positive displacement slave pump 13 illustrated can be replaced by a pressure pump of any suitable type incorporating a valve switching assembly adapted to alternately pressurise fluid in the transmission lines and to discharge the pumped fluid.
  • the pump apparatus of this embodiment has advantages over the background art known to the applicant, particularly when pumping water from relatively deep boreholes, in that it avoids the need for lengthy electrical power cables and consequential losses in efficiency. It also avoids the need for lengthy rotating drive shafts which also result in losses 10 in efficiency and it provides a useful and effic alternative pumping arrangement which is relatively eas maintain.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)

Abstract

Dispositif de pompage servant à pomper un fluide à distance, par exemple entre le point d'admission du fluide et le point d'alimentation en fluide. Le dispositif comprend: une pompe auxiliaire à double action située au point d'alimentation en fluide; une pompe principale à double action (11) située au point d'admission du fluide et possédant une première et une deuxième entrée (90, 96) reliées respectivement à une première et à une deuxième chambre (52, 62) possédant chacune un clapet antiretour empêchant le refoulement dans les entrées respectivement (90, 96), un piston (71) séparant la première et la deuxième chambre (52, 62), un premier et un deuxième tube à orifice de transmission (50, 56) transmettant et renvoyant alternativement le fluide entre la pompe auxiliaire et un premier et un deuxième plénum de transmission (51, 61) de façon à actionner la pompe principale (11), afin d'amener alternativement le fluide pompé depuis la deuxième et la première chambre (62, 52) vers le point d'alimentation, ainsi que des clapets antiretour (53, 54 et 63, 64) servant à empêcher l'écoulement du fluide depuis le premier et le deuxième plénum de transmission (51, 61) vers la première et la deuxième chambre (52, 62) respectivement.
PCT/AU1992/000500 1991-09-20 1992-09-21 Dispositif de pompage WO1993006370A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPK8511 1991-09-20
AUPK851191 1991-09-20

Publications (1)

Publication Number Publication Date
WO1993006370A1 true WO1993006370A1 (fr) 1993-04-01

Family

ID=3775708

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1992/000500 WO1993006370A1 (fr) 1991-09-20 1992-09-21 Dispositif de pompage

Country Status (1)

Country Link
WO (1) WO1993006370A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102817820A (zh) * 2012-09-14 2012-12-12 王常青 液压驱动式抽油增压泵

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2008760A (en) * 1933-07-01 1935-07-23 Jaderblom Erik Ture Hydraulically operated piston pump
US2186411A (en) * 1938-04-22 1940-01-09 James M Gurley Hydraulic pumping apparatus
US2339990A (en) * 1941-07-21 1944-01-25 Ernest W Gutsch Hydraulic water pump
US2490118A (en) * 1945-07-23 1949-12-06 Hygroequipments Ltd Pump
US2628565A (en) * 1946-09-12 1953-02-17 William C Richardson Fluid operated reciprocating pump for drilled wells

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2008760A (en) * 1933-07-01 1935-07-23 Jaderblom Erik Ture Hydraulically operated piston pump
US2186411A (en) * 1938-04-22 1940-01-09 James M Gurley Hydraulic pumping apparatus
US2339990A (en) * 1941-07-21 1944-01-25 Ernest W Gutsch Hydraulic water pump
US2490118A (en) * 1945-07-23 1949-12-06 Hygroequipments Ltd Pump
US2628565A (en) * 1946-09-12 1953-02-17 William C Richardson Fluid operated reciprocating pump for drilled wells

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102817820A (zh) * 2012-09-14 2012-12-12 王常青 液压驱动式抽油增压泵

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