[go: up one dir, main page]

US20150285271A1 - Jet pump - Google Patents

Jet pump Download PDF

Info

Publication number
US20150285271A1
US20150285271A1 US14/674,216 US201514674216A US2015285271A1 US 20150285271 A1 US20150285271 A1 US 20150285271A1 US 201514674216 A US201514674216 A US 201514674216A US 2015285271 A1 US2015285271 A1 US 2015285271A1
Authority
US
United States
Prior art keywords
fluid
nozzle
jet pump
inlet
pump according
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.)
Abandoned
Application number
US14/674,216
Inventor
Mirza Najam Ali Beg
Mir Mahmood Sarshar
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.)
Caltec Ltd
Original Assignee
Caltec Ltd
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 Caltec Ltd filed Critical Caltec Ltd
Publication of US20150285271A1 publication Critical patent/US20150285271A1/en
Assigned to CALTEC LIMITED reassignment CALTEC LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ALI BEG, MIRZA NAJAM, SARSHAR, MIR MAHMOOD
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/42—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow characterised by the input flow of inducing fluid medium being radial or tangential to output flow
    • 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
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/02—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid
    • F04F5/10—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being liquid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • 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
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • F04F5/463—Arrangements of nozzles with provisions for mixing
    • 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
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
    • F04F5/24—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing liquids, e.g. containing solids, or liquids and elastic fluids
    • 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
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
    • F04F5/46—Arrangements of nozzles
    • 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
    • F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
    • F04F5/54—Installations characterised by use of jet pumps, e.g. combinations of two or more jet pumps of different type

Definitions

  • the present invention relates to a jet pump and in particular, but not exclusively, to a jet pump for use in the oil and gas industries.
  • Jet pumps or eductors are passive devices that use energy from a high pressure (HP) fluid source to boost the pressure of a low pressure (LP) fluid.
  • HP high pressure
  • LP low pressure
  • the terms jet pump, eductor, ejector and gas jet compressor are used in various industries and refer to the same general type of device.
  • the HP and LP fluids may each consist of liquids, gases or a mixture of liquids and gases.
  • FIGS. 1 and 2 show the key features of a typical jet pump.
  • HP fluid from a HP source passes through a HP inlet 4 to a jet pump 6 , where it passes through constriction known as a nozzle 8 that increases the velocity of the fluid.
  • a nozzle 8 that increases the velocity of the fluid.
  • part of the potential (pressure) energy of the HP fluid is converted to kinetic energy (high velocity fluid).
  • the pressure of the fluid in a nozzle discharge zone 10 in front of the nozzle 8 drops significantly.
  • LP fluid from a LP source passes through a LP inlet 12 and is introduced into the jet pump at the nozzle discharge zone 10 , where it is entrained in the flow of fluid emerging from the nozzle 8 .
  • the mixture of fluids then passes through a mixing tube 14 where momentum and energy are exchanged between the fluids.
  • the mixture finally passes through an expanding diffuser 16 where the velocity of flow normalises and pressure recovery takes place.
  • the pressure at the outlet 18 of the jet pump will be at an intermediate value between the pressures of the HP and LP fluids and the inlets 4 , 12 .
  • the nozzle 8 and the mixing tube/diffuser 14 , 16 comprise replaceable components that are mounted within a housing 20 .
  • Jet pumps have been used successfully in a variety of applications onshore or near the bottom of oil or gas wells.
  • the HP fluid may be gas or a high pressure liquid such as oil or water.
  • the LP fluid could be gas, or liquid (oil and/or water), or a mixture of gas and liquid.
  • the HP fluid is a liquid and the LP fluid is predominantly a gas
  • complete mixing of the HP and LP fluids may not take place. This can adversely affect the operational efficiency of the jet pump.
  • a jet pump including a HP inlet vent, a nozzle connected to the HP inlet vent via a HP fluid conduit and configured to discharge a first fluid flowing through the HP inlet into a nozzle discharge zone, a LP inlet vent, a LP fluid conduit connected to the LP inlet vent and configured to discharge a second fluid flowing through the LP inlet vent into the nozzle discharge zone, a mixing tube downstream of the nozzle discharge zone for mixing the first and second fluids and an outlet vent downstream of the mixing tube for discharging a mixture of the first and second fluids from the jet pump, wherein the jet pump includes a spinner mechanism upstream of the nozzle discharge zone for causing spinning rotation of at least one of the first and second fluids about a longitudinal axis of the nozzle.
  • the spinner mechanism includes a LP inlet chamber connected to receive the second fluid from the LP fluid conduit, the LP inlet chamber comprising a fluid passageway that extends circumferentially around the nozzle to cause rotation of the second fluid around the longitudinal axis of the nozzle.
  • the LP inlet chamber may include a curved wall that extends at least partly around the nozzle.
  • the LP inlet chamber may be substantially involute in shape, being defined by a curved wall that has a decreasing radius of curvature from its upstream end to its downstream end.
  • the LP inlet chamber may be substantially cylindrical in shape.
  • the LP inlet chamber has a tangential inlet port connected to the LP inlet vent.
  • the LP inlet chamber has an annular outlet port configured to discharge the second fluid into the nozzle discharge zone.
  • the spinner mechanism includes a spinner device located within the HP fluid conduit, which is configured to cause rotation of the first fluid around the longitudinal axis of the nozzle.
  • a spinner device may also be provided within the LP inlet chamber.
  • the spinner device preferably includes at least one helical blade configured to cause rotation of the first fluid as it flows through the HP fluid conduit.
  • FIG. 1 is a sectional side view of a known jet pump
  • FIG. 2 is a sectional isometric view of a known jet pump
  • FIG. 3 is a sectional side view of a jet pump assembly according to a first embodiment of the invention.
  • FIG. 4 is a cross-sectional view on live IV-IV of FIG. 3 ;
  • FIG. 5 is a sectional side view of a jet pump assembly according to a second embodiment of the invention.
  • FIG. 6 is a cross-sectional view on live VI-VI of FIG. 5 ;
  • FIG. 7 is a sectional side-view of a nozzle assembly of a jet pump according to a third embodiment of the invention.
  • FIGS. 3 and 4 show a jet pump according to a first embodiment of the invention.
  • the jet pump includes a HP inlet 104 and an HP fluid conduit comprising an inlet tube 106 having a nozzle 108 at one end.
  • a HP first fluid flowing through the inlet tube 106 is discharged through the nozzle 108 into a low pressure nozzle discharge zone 110 in front of the nozzle 108 .
  • the nozzle 108 is constricted to increase the velocity of the fluid as it is discharged from the nozzle 108 . In this way the potential (pressure) energy of the HP first fluid is converted to kinetic energy as the fluid emerges from the nozzle 108 . This reduces the pressure at the low pressure nozzle discharge zone 110 .
  • a low pressure second fluid from a LP source passes through an LP inlet 112 and is introduced into an involute inlet chamber 114 that encircles the inlet tube 106 and is positioned just upstream of the nozzle 108 and the low pressure nozzle discharge zone 110 .
  • the involute chamber 114 is defined by a curved wall 116 of decreasing radius that curves around the nozzle 108 .
  • the involute chamber 114 is defined between the curved wall 116 and the circular wall of the inlet tube 106 . This chamber 114 has a cross-sectional area that decreases from the inlet end to the outlet end of the chamber.
  • the LP second fluid flowing through the LP inlet 112 into the involute inlet chamber 114 is guided by the curved wall 116 so that it rotates around the inlet tube 106 as shown in FIG. 4 .
  • the speed of the rotating second fluid increases as it flows through the chamber 114 as a result of the decreasing cross-sectional area of the involute inlet chamber 114 .
  • the rotating second fluid exits the involute inlet chamber 114 through an annular gap 117 that surrounds the inlet tube 106 .
  • the rotating LP second fluid is then combined in the nozzle discharge zone 110 with the first fluid emerging from the nozzle 108 and the first and second fluids are mixed within the mixing tube 118 downstream of the nozzle 108 .
  • the spinning motion of the LP second fluid causes the first and second fluids to mix thoroughly within the mixing tube 118 .
  • the mixture of fluids then passes through an expanding diffuser 120 where the velocity of the flow normalises as pressure recovery takes place.
  • the mixture of fluids exits the jet pump 102 at outlet 122 .
  • the pressure of the fluid mixture at the outlet 122 will be at an intermediate value between the pressures of the first and second fluids at the HP and LP inlets 104 , 112 .
  • the inlet tube 106 and the mixing tube/diffuser 118 , 120 are replaceable components that are mounted within a housing 124 .
  • the nozzle 108 , the mixing tube 118 and the diffuser 120 may be permanently mounted within or formed integrally with the housing 124 .
  • FIGS. 5 and 6 depict a jet pump according to a second embodiment of the invention. This embodiment is similar to the first embodiment described above, except that the low pressure inlet chamber 124 has a different cross-sectional shape.
  • the second jet pump shown in FIGS. 5 and 6 includes a HP inlet 104 and an inlet tube 106 that has a nozzle 108 at its downstream end.
  • the nozzle 108 is arranged to discharge a first fluid emerging from the nozzle into a LP nozzle discharge zone 110 downstream of the nozzle.
  • the discharged fluid then flows through a mixing tube 118 and a diffuser 120 towards an outlet vent 122 .
  • the LP inlet chamber 124 is cylindrical and is defined by a curved wall 126 that encircles the inlet tube 106 upstream of the nozzle 108 .
  • the LP inlet 112 is connected tangentially to the LP inlet chamber 124 , to feed a LP second fluid tangentially into the LP inlet chamber 124 .
  • the LP second fluid rotates around the nozzle 108 before flowing into the LP nozzle discharge zone 110 downstream of the nozzle 108 through, an annular opening 127 .
  • the rotational movement of the LP second fluid aids mixing of the second fluid with the high velocity first fluid emerging from the nozzle 108 , thereby improving the operational efficiency of the jet pump.
  • the two fluids are mixed within the mixing tube 118 and the mixture then flows through the diffuser 120 towards the outlet 122 .
  • the mixture of fluids emerging from the outlet 122 will have a pressure that is intermediate between the pressures of the first and second fluids at the HP and LP inlets 104 , 112 .
  • the HP inlet tube 106 may include a mechanical static spinner device 130 located within the HP inlet tube 106 upstream of the nozzle 108 , as shown in FIG. 7 .
  • This spinner device 130 may for example take the form of helical blades provided on the inner wall of the HP inlet tube 106 , which cause the HP first fluid flowing through the HP inlet tube to rotate about the axis of the tube. The spinning motion of the fluid will be maintained as the fluid emerges from the nozzle 108 , thereby enhancing mixing of the first and second fluids in the LP nozzle discharge zone 110 downstream of the nozzle 108 and in the mixing tube 118 .
  • This spinner device 130 may be combined with either of the LP inlet chambers 114 , 124 of the first and second embodiments described above and shown in FIGS. 3-6 so that both fluid streams are spinning as they enter the mixing tube 118 .
  • the spinner device 130 may be used on its own with a conventional LP inlet arrangement as depicted in FIGS. 1 and 2 , in which case spinning motion will be imparted only to the HP first fluids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Abstract

A jet pump comprises a HP inlet vent, a nozzle connected to the HP inlet vent via a HP fluid conduit and configured to discharge a first fluid flowing through the HP inlet into a nozzle discharge zone, a LP inlet vent, a LP fluid conduit connected to the LP inlet vent and configured to discharge a second fluid flowing through the LP inlet vent into the nozzle discharge zone. A mixing tube is provided downstream of the nozzle discharge zone for mixing the first and second fluids and an outlet vent is located downstream of the mixing tube for discharging a mixture of the first and second fluids from the jet pump. The jet pump includes a spinner mechanism upstream of the nozzle discharge zone for causing spinning rotation of at least one of the first and second fluids about a longitudinal axis of the nozzle. In one embodiment the spinner mechanism includes a LP inlet chamber connected to receive the second fluid from the LP fluid conduit, the LP inlet chamber comprising a fluid passageway that extends circumferentially around the nozzle to cause rotation of the second fluid around the longitudinal axis of the nozzle.

Description

    CROSS-REFERENCE TO RELATED APPLICATION
  • This application claims priority under 35 USC 119 to British application no. GB 1406059.4 filed Apr. 4, 2014, and the disclosure of said British application is hereby incorporated by reference in its entirety.
    • FIELD
  • The present invention relates to a jet pump and in particular, but not exclusively, to a jet pump for use in the oil and gas industries.
    • BACKGROUND
  • Jet pumps or eductors are passive devices that use energy from a high pressure (HP) fluid source to boost the pressure of a low pressure (LP) fluid. The terms jet pump, eductor, ejector and gas jet compressor are used in various industries and refer to the same general type of device. The HP and LP fluids may each consist of liquids, gases or a mixture of liquids and gases.
  • FIGS. 1 and 2 show the key features of a typical jet pump. HP fluid from a HP source passes through a HP inlet 4 to a jet pump 6, where it passes through constriction known as a nozzle 8 that increases the velocity of the fluid. In this way part of the potential (pressure) energy of the HP fluid is converted to kinetic energy (high velocity fluid). As a result, the pressure of the fluid in a nozzle discharge zone 10 in front of the nozzle 8 drops significantly.
  • LP fluid from a LP source passes through a LP inlet 12 and is introduced into the jet pump at the nozzle discharge zone 10, where it is entrained in the flow of fluid emerging from the nozzle 8. The mixture of fluids then passes through a mixing tube 14 where momentum and energy are exchanged between the fluids. The mixture finally passes through an expanding diffuser 16 where the velocity of flow normalises and pressure recovery takes place. The pressure at the outlet 18 of the jet pump will be at an intermediate value between the pressures of the HP and LP fluids and the inlets 4, 12. In some jet pumps the nozzle 8 and the mixing tube/ diffuser 14, 16 comprise replaceable components that are mounted within a housing 20. Jet pumps have been used successfully in a variety of applications onshore or near the bottom of oil or gas wells. In such situations the HP fluid may be gas or a high pressure liquid such as oil or water. The LP fluid could be gas, or liquid (oil and/or water), or a mixture of gas and liquid.
  • In some applications, particularly when the HP fluid is a liquid and the LP fluid is predominantly a gas, complete mixing of the HP and LP fluids may not take place. This can adversely affect the operational efficiency of the jet pump.
    • SUMMARY
  • It is an object of the present invention to provide a jet pump that mitigates one or more of the aforesaid disadvantages.
  • According to one aspect of the present invention there is provided a jet pump including a HP inlet vent, a nozzle connected to the HP inlet vent via a HP fluid conduit and configured to discharge a first fluid flowing through the HP inlet into a nozzle discharge zone, a LP inlet vent, a LP fluid conduit connected to the LP inlet vent and configured to discharge a second fluid flowing through the LP inlet vent into the nozzle discharge zone, a mixing tube downstream of the nozzle discharge zone for mixing the first and second fluids and an outlet vent downstream of the mixing tube for discharging a mixture of the first and second fluids from the jet pump, wherein the jet pump includes a spinner mechanism upstream of the nozzle discharge zone for causing spinning rotation of at least one of the first and second fluids about a longitudinal axis of the nozzle.
  • We have found that by spinning at least one of the first and second fluids about a longitudinal axis of the nozzle, the mixing of the fluids in the mixing tube can be significantly improved. This applies in all situations, including even a situation where the HP first fluid is a liquid and the LP second fluid is predominantly a gas. Complete mixing of the HP and LP fluids can thus be ensured, thereby significantly improving the operational efficiency of the jet pump.
  • Advantageously, the spinner mechanism includes a LP inlet chamber connected to receive the second fluid from the LP fluid conduit, the LP inlet chamber comprising a fluid passageway that extends circumferentially around the nozzle to cause rotation of the second fluid around the longitudinal axis of the nozzle.
  • The LP inlet chamber may include a curved wall that extends at least partly around the nozzle. The LP inlet chamber may be substantially involute in shape, being defined by a curved wall that has a decreasing radius of curvature from its upstream end to its downstream end. Alternatively, the LP inlet chamber may be substantially cylindrical in shape.
  • Advantageously, the LP inlet chamber has a tangential inlet port connected to the LP inlet vent.
  • Advantageously, the LP inlet chamber has an annular outlet port configured to discharge the second fluid into the nozzle discharge zone.
  • Advantageously, the spinner mechanism includes a spinner device located within the HP fluid conduit, which is configured to cause rotation of the first fluid around the longitudinal axis of the nozzle. A spinner device may also be provided within the LP inlet chamber.
  • The spinner device preferably includes at least one helical blade configured to cause rotation of the first fluid as it flows through the HP fluid conduit.
    • BRIEF DESCRIPTION OF DRAWINGS
  • Certain embodiments of the invention will now be described by way of example with reference to the accompanying drawings, in which:
  • FIG. 1 is a sectional side view of a known jet pump;
  • FIG. 2 is a sectional isometric view of a known jet pump;
  • FIG. 3 is a sectional side view of a jet pump assembly according to a first embodiment of the invention;
  • FIG. 4 is a cross-sectional view on live IV-IV of FIG. 3;
  • FIG. 5 is a sectional side view of a jet pump assembly according to a second embodiment of the invention;
  • FIG. 6 is a cross-sectional view on live VI-VI of FIG. 5; and
  • FIG. 7 is a sectional side-view of a nozzle assembly of a jet pump according to a third embodiment of the invention.
    •  DETAILED DESCRIPTION
  • FIGS. 3 and 4 show a jet pump according to a first embodiment of the invention. The jet pump includes a HP inlet 104 and an HP fluid conduit comprising an inlet tube 106 having a nozzle 108 at one end. A HP first fluid flowing through the inlet tube 106 is discharged through the nozzle 108 into a low pressure nozzle discharge zone 110 in front of the nozzle 108. The nozzle 108 is constricted to increase the velocity of the fluid as it is discharged from the nozzle 108. In this way the potential (pressure) energy of the HP first fluid is converted to kinetic energy as the fluid emerges from the nozzle 108. This reduces the pressure at the low pressure nozzle discharge zone 110.
  • A low pressure second fluid from a LP source passes through an LP inlet 112 and is introduced into an involute inlet chamber 114 that encircles the inlet tube 106 and is positioned just upstream of the nozzle 108 and the low pressure nozzle discharge zone 110. The involute chamber 114 is defined by a curved wall 116 of decreasing radius that curves around the nozzle 108. The involute chamber 114 is defined between the curved wall 116 and the circular wall of the inlet tube 106. This chamber 114 has a cross-sectional area that decreases from the inlet end to the outlet end of the chamber.
  • The LP second fluid flowing through the LP inlet 112 into the involute inlet chamber 114 is guided by the curved wall 116 so that it rotates around the inlet tube 106 as shown in FIG. 4. The speed of the rotating second fluid increases as it flows through the chamber 114 as a result of the decreasing cross-sectional area of the involute inlet chamber 114.
  • The rotating second fluid exits the involute inlet chamber 114 through an annular gap 117 that surrounds the inlet tube 106. The rotating LP second fluid is then combined in the nozzle discharge zone 110 with the first fluid emerging from the nozzle 108 and the first and second fluids are mixed within the mixing tube 118 downstream of the nozzle 108. The spinning motion of the LP second fluid causes the first and second fluids to mix thoroughly within the mixing tube 118. The mixture of fluids then passes through an expanding diffuser 120 where the velocity of the flow normalises as pressure recovery takes place. Finally, the mixture of fluids exits the jet pump 102 at outlet 122. The pressure of the fluid mixture at the outlet 122 will be at an intermediate value between the pressures of the first and second fluids at the HP and LP inlets 104, 112.
  • In this embodiment the inlet tube 106 and the mixing tube/ diffuser 118, 120 are replaceable components that are mounted within a housing 124. Alternatively, the nozzle 108, the mixing tube 118 and the diffuser 120 may be permanently mounted within or formed integrally with the housing 124.
  • FIGS. 5 and 6 depict a jet pump according to a second embodiment of the invention. This embodiment is similar to the first embodiment described above, except that the low pressure inlet chamber 124 has a different cross-sectional shape.
  • The second jet pump shown in FIGS. 5 and 6 includes a HP inlet 104 and an inlet tube 106 that has a nozzle 108 at its downstream end. The nozzle 108 is arranged to discharge a first fluid emerging from the nozzle into a LP nozzle discharge zone 110 downstream of the nozzle. The discharged fluid then flows through a mixing tube 118 and a diffuser 120 towards an outlet vent 122.
  • In the embodiment of FIGS. 5 and 6 the LP inlet chamber 124 is cylindrical and is defined by a curved wall 126 that encircles the inlet tube 106 upstream of the nozzle 108. The LP inlet 112 is connected tangentially to the LP inlet chamber 124, to feed a LP second fluid tangentially into the LP inlet chamber 124. As a result, the LP second fluid rotates around the nozzle 108 before flowing into the LP nozzle discharge zone 110 downstream of the nozzle 108 through, an annular opening 127. The rotational movement of the LP second fluid aids mixing of the second fluid with the high velocity first fluid emerging from the nozzle 108, thereby improving the operational efficiency of the jet pump.
  • The two fluids are mixed within the mixing tube 118 and the mixture then flows through the diffuser 120 towards the outlet 122. As before, the mixture of fluids emerging from the outlet 122 will have a pressure that is intermediate between the pressures of the first and second fluids at the HP and LP inlets 104, 112.
  • Optionally, the HP inlet tube 106 may include a mechanical static spinner device 130 located within the HP inlet tube 106 upstream of the nozzle 108, as shown in FIG. 7. This spinner device 130 may for example take the form of helical blades provided on the inner wall of the HP inlet tube 106, which cause the HP first fluid flowing through the HP inlet tube to rotate about the axis of the tube. The spinning motion of the fluid will be maintained as the fluid emerges from the nozzle 108, thereby enhancing mixing of the first and second fluids in the LP nozzle discharge zone 110 downstream of the nozzle 108 and in the mixing tube 118. This spinner device 130 may be combined with either of the LP inlet chambers 114, 124 of the first and second embodiments described above and shown in FIGS. 3-6 so that both fluid streams are spinning as they enter the mixing tube 118. Alternatively the spinner device 130 may be used on its own with a conventional LP inlet arrangement as depicted in FIGS. 1 and 2, in which case spinning motion will be imparted only to the HP first fluids.

Claims (20)

1. A jet pump including a HP inlet vent, a nozzle connected to the HP inlet vent via a HP fluid conduit and configured to discharge a first fluid flowing through the HP inlet into a nozzle discharge zone, a LP inlet vent, a LP fluid conduit connected to the LP inlet vent and configured to discharge a second fluid flowing through the LP inlet vent into the nozzle discharge zone, a mixing tube downstream of the nozzle discharge zone for mixing the first and second fluids and an outlet vent downstream of the mixing tube for discharging a mixture of the first and second fluids from the jet pump, wherein the jet pump includes a spinner mechanism upstream of the nozzle discharge zone for causing spinning rotation of at least one of the first and second fluids about a longitudinal axis of the nozzle.
2. A jet pump according to claim 1, wherein the spinner mechanism includes a LP inlet chamber connected to receive the second fluid from the LP fluid conduit, the LP inlet chamber comprising a fluid passageway that extends circumferentially around the nozzle to cause rotation of the second fluid around the longitudinal axis of the nozzle.
3. A jet pump according to claim 2, wherein the LP inlet chamber includes a curved wall that extends at least partly around the nozzle.
4. A jet pump according to claim 3, wherein the LP inlet chamber is substantially involute in shape.
5. A jet pump according to claim 3, wherein the LP inlet chamber is substantially cylindrical in shape.
6. A jet pump according to claim 2, wherein the LP inlet chamber has a tangential inlet port connected to the LP inlet vent.
7. A jet pump according to claim 2, wherein the LP inlet chamber comprises an annular outlet port configured to discharge the second fluid into the nozzle discharge zone.
8. A jet pump according to claim 1, wherein the spinner mechanism includes a static spinner device located within the HP fluid conduit, which is configured to cause rotation of the first fluid around the longitudinal axis of the nozzle.
9. A jet pump according to claim 8, wherein the static spinner device includes at least one helical blade configured to cause rotation of the first fluid as it flows through the HP fluid conduit.
10. A jet pump according to claim 3, wherein the LP inlet chamber has a tangential inlet port connected to the LP inlet vent.
11. A jet pump according to claim 4, wherein the LP inlet chamber has a tangential inlet port connected to the LP inlet vent.
12. A jet pump according to claim 5, wherein the LP inlet chamber has a tangential inlet port connected to the LP inlet vent.
13. A jet pump according to claim 3, wherein the LP inlet chamber comprises an annular outlet port configured to discharge the second fluid into the nozzle discharge zone.
14. A jet pump according to claim 4, wherein the LP inlet chamber comprises an annular outlet port configured to discharge the second fluid into the nozzle discharge zone.
15. A jet pump according to claim 5, wherein the LP inlet chamber comprises an annular outlet port configured to discharge the second fluid into the nozzle discharge zone.
16. A jet pump according to claim 6, wherein the LP inlet chamber comprises an annular outlet port configured to discharge the second fluid into the nozzle discharge zone.
17. A jet pump according to claim 2, wherein the spinner mechanism includes a static spinner device located within the HP fluid conduit, which is configured to cause rotation of the first fluid around the longitudinal axis of the nozzle.
18. A jet pump according to claim 3, wherein the spinner mechanism includes a static spinner device located within the HP fluid conduit, which is configured to cause rotation of the first fluid around the longitudinal axis of the nozzle.
19. A jet pump according to claim 4, wherein the spinner mechanism includes a static spinner device located within the HP fluid conduit, which is configured to cause rotation of the first fluid around the longitudinal axis of the nozzle.
20. A jet pump according to claim 5, wherein the spinner mechanism includes a static spinner device located within the HP fluid conduit, which is configured to cause rotation of the first fluid around the longitudinal axis of the nozzle.
US14/674,216 2014-04-04 2015-03-31 Jet pump Abandoned US20150285271A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1406059.4 2014-04-04
GB1406059.4A GB2524820A (en) 2014-04-04 2014-04-04 Jet pump

Publications (1)

Publication Number Publication Date
US20150285271A1 true US20150285271A1 (en) 2015-10-08

Family

ID=50776806

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/674,216 Abandoned US20150285271A1 (en) 2014-04-04 2015-03-31 Jet pump

Country Status (3)

Country Link
US (1) US20150285271A1 (en)
GB (1) GB2524820A (en)
NO (1) NO20150383A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9494166B1 (en) * 2015-12-22 2016-11-15 Syphon Energy, LLC Jet-gas lift system and method for pumping well fluids
CN106975379A (en) * 2017-04-08 2017-07-25 深圳欧威奇科技有限公司 A kind of jet mixer of air inlet biasing
WO2017187082A1 (en) * 2016-04-27 2017-11-02 Safran Aircraft Engines Jet pump for a turbomachine, comprising blading for imparting rotation to active fluid
JP2020045768A (en) * 2018-09-14 2020-03-26 富士電機株式会社 Ejector
US11274680B2 (en) * 2017-01-11 2022-03-15 Transvac Systems Limited Ejector device
WO2023247381A1 (en) * 2022-06-21 2023-12-28 Norrde As A multi-stage venturi-type apparatus, liquid treatment system, aquafarm, and method for treating liquid in a tank

Citations (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US718683A (en) * 1902-04-07 1903-01-20 George C Wiedenmayer Carbonating device.
US1517467A (en) * 1920-09-29 1924-12-02 Westinghouse Electric & Mfg Co Steam-actuated ejector
US1612838A (en) * 1925-04-09 1927-01-04 Centrifix Corp Draft-inducing means
US1619808A (en) * 1923-04-13 1927-03-08 Curtis B Camp Suction-producing means for fuel-feeding systems
US3007322A (en) * 1961-04-03 1961-11-07 Adiel Y Dodge Low pressure exhauster
US3099965A (en) * 1958-01-02 1963-08-06 Krantz H Fa Jet conveyors
US3131645A (en) * 1961-11-28 1964-05-05 A Y Dodge Co Vortex jet pump
US3134338A (en) * 1961-08-07 1964-05-26 A Y Dodge Co Jet pump
US3667069A (en) * 1970-03-27 1972-06-06 Univ Minnesota Jet pump cardiac replacement and assist device and method of at least partially replacing a disabled right heart
US4245961A (en) * 1978-09-08 1981-01-20 Martin Marietta Corporation Ejector utilizing a vortex flow
US4834132A (en) * 1986-09-25 1989-05-30 Nissan Motor Company, Limited Fuel transfer apparatus
US5024583A (en) * 1988-12-23 1991-06-18 Nissan Motor Co., Ltd. Jet pump structure for a fuel tank
US5082426A (en) * 1988-07-15 1992-01-21 Nissan Motor Company, Limited Jet pump structure for a fuel tank
US5160610A (en) * 1990-11-13 1992-11-03 Smith & Loveless, Inc. Radial header for dissolved air flotation systems
US5527162A (en) * 1992-10-14 1996-06-18 Bego Bremer Goldschlagerei Wilh. Herbst Gmbh & Co. Suction apparatus, operated by compressed air, for drawing off dust-laden gases
US6210123B1 (en) * 1998-12-23 2001-04-03 Institut Francais Du Petrole Jet pumping device
US6398973B1 (en) * 1997-11-04 2002-06-04 B.H.R. Group Limited Cyclone separator
US6491064B2 (en) * 2000-12-06 2002-12-10 Juergen Kampe Apparatus for charging a liquid medium with a gas
US20080017594A1 (en) * 2004-05-17 2008-01-24 Sarshar Mahmood M System And Method For The Production Or Handling Of Heavy Oil
US20080066466A1 (en) * 2005-03-22 2008-03-20 Melchior Jean F Device for accelerating a turbocharger unit at low speeds of a reciprocating engine, and a reciprocating engine including such a device
US20080074944A1 (en) * 2006-09-21 2008-03-27 Basf Aktiengesellschaft Process for mixing a liquid or mixture of a liquid and a fine solid present in an essentially self-containing vessel
US20100200521A1 (en) * 2006-08-12 2010-08-12 Caltec Limited Cyclonic separator and a method of separating fluids
US20100269696A1 (en) * 2007-10-12 2010-10-28 Caltec Limited Apparatus for and method of separating multi-phase fluids
US8556594B2 (en) * 2010-03-18 2013-10-15 Samsung Electronics Co., Ltd. Vacuum ejector and vacuum apparatus having the same
US20150157991A1 (en) * 2013-12-11 2015-06-11 Caltec Limited Commingling device
US20150345841A1 (en) * 2012-12-27 2015-12-03 Denso Corporation Ejector
US20160047586A1 (en) * 2013-03-27 2016-02-18 Denso Corporation Ejector
US20160090995A1 (en) * 2013-05-15 2016-03-31 Denso Corporation Ejector
US20160116195A1 (en) * 2013-06-18 2016-04-28 Denso Corporation Ejector
US20160169566A1 (en) * 2013-08-09 2016-06-16 Denso Corporation Ejector
US20160186783A1 (en) * 2013-06-18 2016-06-30 Denso Corporation Ejector
US20160348948A1 (en) * 2014-01-21 2016-12-01 Denso Corporation Ejector

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB575024A (en) * 1944-07-18 1946-01-30 Wilfred Reginald Holloway Improvements in air ejectors
SU545776A1 (en) * 1975-04-09 1977-02-05 Куйбышевский политехнический институт им.В.В.Куйбышева Swirl Ejector
FR2646213A1 (en) * 1989-04-20 1990-10-26 Marzin Georges Marcel Jose Ejector (jet pump) for volumetric induction and compression
RU2052671C1 (en) * 1992-03-02 1996-01-20 Нефтегазодобывающее управление "Ласьеганнефть" Hydraulic vortex compressor
DE10016924A1 (en) * 2000-04-05 2001-07-12 Voith Paper Patent Gmbh Jet pump has two fluid feeds to be mixed for delivery where the jet tube has an axial adjustment against the mixer tube which can be set and varied while the pump is operating
EP2718644B1 (en) * 2011-06-10 2020-09-09 Carrier Corporation Ejector with motive flow swirl

Patent Citations (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US718683A (en) * 1902-04-07 1903-01-20 George C Wiedenmayer Carbonating device.
US1517467A (en) * 1920-09-29 1924-12-02 Westinghouse Electric & Mfg Co Steam-actuated ejector
US1619808A (en) * 1923-04-13 1927-03-08 Curtis B Camp Suction-producing means for fuel-feeding systems
US1612838A (en) * 1925-04-09 1927-01-04 Centrifix Corp Draft-inducing means
US3099965A (en) * 1958-01-02 1963-08-06 Krantz H Fa Jet conveyors
US3007322A (en) * 1961-04-03 1961-11-07 Adiel Y Dodge Low pressure exhauster
US3134338A (en) * 1961-08-07 1964-05-26 A Y Dodge Co Jet pump
US3131645A (en) * 1961-11-28 1964-05-05 A Y Dodge Co Vortex jet pump
US3667069A (en) * 1970-03-27 1972-06-06 Univ Minnesota Jet pump cardiac replacement and assist device and method of at least partially replacing a disabled right heart
US4245961A (en) * 1978-09-08 1981-01-20 Martin Marietta Corporation Ejector utilizing a vortex flow
US4834132A (en) * 1986-09-25 1989-05-30 Nissan Motor Company, Limited Fuel transfer apparatus
US5082426A (en) * 1988-07-15 1992-01-21 Nissan Motor Company, Limited Jet pump structure for a fuel tank
US5024583A (en) * 1988-12-23 1991-06-18 Nissan Motor Co., Ltd. Jet pump structure for a fuel tank
US5160610A (en) * 1990-11-13 1992-11-03 Smith & Loveless, Inc. Radial header for dissolved air flotation systems
US5527162A (en) * 1992-10-14 1996-06-18 Bego Bremer Goldschlagerei Wilh. Herbst Gmbh & Co. Suction apparatus, operated by compressed air, for drawing off dust-laden gases
US6398973B1 (en) * 1997-11-04 2002-06-04 B.H.R. Group Limited Cyclone separator
US6210123B1 (en) * 1998-12-23 2001-04-03 Institut Francais Du Petrole Jet pumping device
US6491064B2 (en) * 2000-12-06 2002-12-10 Juergen Kampe Apparatus for charging a liquid medium with a gas
US20080017594A1 (en) * 2004-05-17 2008-01-24 Sarshar Mahmood M System And Method For The Production Or Handling Of Heavy Oil
US20080066466A1 (en) * 2005-03-22 2008-03-20 Melchior Jean F Device for accelerating a turbocharger unit at low speeds of a reciprocating engine, and a reciprocating engine including such a device
US20100200521A1 (en) * 2006-08-12 2010-08-12 Caltec Limited Cyclonic separator and a method of separating fluids
US20080074944A1 (en) * 2006-09-21 2008-03-27 Basf Aktiengesellschaft Process for mixing a liquid or mixture of a liquid and a fine solid present in an essentially self-containing vessel
US20100269696A1 (en) * 2007-10-12 2010-10-28 Caltec Limited Apparatus for and method of separating multi-phase fluids
US8556594B2 (en) * 2010-03-18 2013-10-15 Samsung Electronics Co., Ltd. Vacuum ejector and vacuum apparatus having the same
US20150345841A1 (en) * 2012-12-27 2015-12-03 Denso Corporation Ejector
US20160047586A1 (en) * 2013-03-27 2016-02-18 Denso Corporation Ejector
US20160090995A1 (en) * 2013-05-15 2016-03-31 Denso Corporation Ejector
US20160116195A1 (en) * 2013-06-18 2016-04-28 Denso Corporation Ejector
US20160186783A1 (en) * 2013-06-18 2016-06-30 Denso Corporation Ejector
US20160169566A1 (en) * 2013-08-09 2016-06-16 Denso Corporation Ejector
US20150157991A1 (en) * 2013-12-11 2015-06-11 Caltec Limited Commingling device
US20160348948A1 (en) * 2014-01-21 2016-12-01 Denso Corporation Ejector

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9494166B1 (en) * 2015-12-22 2016-11-15 Syphon Energy, LLC Jet-gas lift system and method for pumping well fluids
WO2017112107A1 (en) * 2015-12-22 2017-06-29 Syphon Energy, LLC Jet-gas lift system and method for pumping well fluids
WO2017187082A1 (en) * 2016-04-27 2017-11-02 Safran Aircraft Engines Jet pump for a turbomachine, comprising blading for imparting rotation to active fluid
FR3050778A1 (en) * 2016-04-27 2017-11-03 Snecma JET PUMP FOR TURBOMACHINE, COMPRISING A BLEEDING FOR ACTIVE FLUID ROTATION
US11808286B2 (en) 2016-04-27 2023-11-07 Safran Aircraft Engines Jet pump for a turbomachine, comprising blading for imparting rotation to active fluid
US11274680B2 (en) * 2017-01-11 2022-03-15 Transvac Systems Limited Ejector device
CN106975379A (en) * 2017-04-08 2017-07-25 深圳欧威奇科技有限公司 A kind of jet mixer of air inlet biasing
JP2020045768A (en) * 2018-09-14 2020-03-26 富士電機株式会社 Ejector
JP7243096B2 (en) 2018-09-14 2023-03-22 富士電機株式会社 Ejector
WO2023247381A1 (en) * 2022-06-21 2023-12-28 Norrde As A multi-stage venturi-type apparatus, liquid treatment system, aquafarm, and method for treating liquid in a tank

Also Published As

Publication number Publication date
GB201406059D0 (en) 2014-05-21
GB2524820A (en) 2015-10-07
NO20150383A1 (en) 2015-10-05

Similar Documents

Publication Publication Date Title
US20150285271A1 (en) Jet pump
JP4426612B2 (en) Fine bubble generation nozzle
US10578110B2 (en) Centrifugal pump with coalescing effect, design method and use thereof
US8622715B1 (en) Twin turbine asymmetrical nozzle and jet pump incorporating such nozzle
US7883570B2 (en) Spiral gas separator
EP2474743B1 (en) Barrel-type multistage pump
CN106122120B (en) Compound two-stage multichannel gas-liquid jet pump
JP5573879B2 (en) Microbubble generator
US20110223039A1 (en) Pump assembly and method
JP2020015018A (en) Gas-liquid mixer
US7153097B2 (en) Centrifugal impeller and pump apparatus
US20130032223A1 (en) Fluid mixer
KR20170096674A (en) micro-bubble generator
CN107820544B (en) Self-aspirating pump assembly
US20210213400A1 (en) Gas-liquid mixing device
JP6663269B2 (en) Compressor
US3185107A (en) Vortex jet pump
EP3438466A1 (en) Ejector, ejector production method, and method for setting outlet flow path of diffuser
CN205977827U (en) Composite two-stage multi-channel gas-liquid jet pump
US20130256425A1 (en) Self cleaning eductor
RU2361118C2 (en) Pump-jet unit
RU2776733C2 (en) Centrifugal rotor
RU2260147C2 (en) Vortex injector
RU2561555C1 (en) Fluid-pneumatic ejector
RU2398638C1 (en) Vortex cavitation device

Legal Events

Date Code Title Description
AS Assignment

Owner name: CALTEC LIMITED, UNITED KINGDOM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ALI BEG, MIRZA NAJAM;SARSHAR, MIR MAHMOOD;REEL/FRAME:036910/0749

Effective date: 20151026

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION