EP0208035A1 - Tauchpumpenanlage mit einem aus mehreren Drähten bestehenden Kabel - Google Patents

Tauchpumpenanlage mit einem aus mehreren Drähten bestehenden Kabel Download PDF

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Publication number
EP0208035A1
EP0208035A1 EP85305757A EP85305757A EP0208035A1 EP 0208035 A1 EP0208035 A1 EP 0208035A1 EP 85305757 A EP85305757 A EP 85305757A EP 85305757 A EP85305757 A EP 85305757A EP 0208035 A1 EP0208035 A1 EP 0208035A1
Authority
EP
European Patent Office
Prior art keywords
cable
casing
unit
flexible
reservoir
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.)
Withdrawn
Application number
EP85305757A
Other languages
English (en)
French (fr)
Inventor
William G. Haesloop
James W. Jones
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.)
JC Carter Co Inc
Original Assignee
JC Carter Co Inc
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 JC Carter Co Inc filed Critical JC Carter Co Inc
Publication of EP0208035A1 publication Critical patent/EP0208035A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
    • B67D7/06—Details or accessories
    • B67D7/58—Arrangements of pumps
    • B67D7/68—Arrangements of pumps submerged in storage tank or reservoir
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/60—Mounting; Assembling; Disassembling
    • F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
    • F04D29/606—Mounting in cavities
    • F04D29/607—Mounting in cavities means for positioning from outside
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/04—Flexible cables, conductors, or cords, e.g. trailing cables
    • H01B7/046—Flexible cables, conductors, or cords, e.g. trailing cables attached to objects sunk in bore holes, e.g. well drilling means, well pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0146—Two-phase
    • F17C2223/0153—Liquefied gas, e.g. LPG, GPL
    • F17C2223/0161—Liquefied gas, e.g. LPG, GPL cryogenic, e.g. LNG, GNL, PLNG
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0171—Arrangement
    • F17C2227/0178—Arrangement in the vessel

Definitions

  • This invention relates generally to a submersible pumping system for discharging a reservoir such as the hull of a cargo ship or a land based storage vessel containing liquids, particularly cryogenic liquids such as liquified gases.
  • U. S. Patent No. Re 31,445 (Carter).
  • a fluid transmitting casing extends downwardly into the reservoir.
  • the casing is closed at its upper end by a removable head plate which includes a sealing gland with a vertically shiftable lift element.
  • the casing has a discharge outlet in an upper portion thereof leading to the exterior of the reservoir, and a foot valve at the lower end thereof which is yieldably biased to a normally closed position to isolate the casing from the reservoir.
  • An integral unit consisting of a pump driven by an electrically powered motor is suitably configured and dimensioned to be passed through the upper casing end and to be raised and lowered through the casing to and from an operative position at the lower casing end where the unit exerts a force on the foot valve to open the same and thereby permit fluid to be pumped by the pump from the reservoir through the casing and out through the discharge outlet.
  • the motor is electrically connected to a junction point located beneath the head plate by means of flexible electrical conduits extending upwardly through the casing.
  • Ground conduits similarly extends from the motor upwardly through the casing to a ground connection on the underside of the head plate.
  • a flexible support cable extends from the unit up through the casing to the vertically shiftable lift element in the sealing gland, and a separate lift cable also extends from the unit up through the casing to the upper portion thereof for connection to an exterior lift mechanism.
  • the motor/pump unit When the motor/pump unit requires servicing, it is removed from the casing in the following manner: the unit is initially lifted off of the foot valve, by pulling up on the shiftable element of the sealing gland, which is turn is connected to the unit by the support cable. This allows the foot valve to close. Thereafter, a purge gas is introduced into the casing to force any residual fluid out of the casing through the foot valve back into the reservoir. The head plate is then disconnected from the upper casing end and raised to provide access to the casing interior. Once this has been accomplished, the lift cable is attached to a winch, the electrical and ground conduits are freed from their respective uppermost connections, and the support cable is detached from the vertically shiftable element of the sealing gland. The winch is then employed to extract the unit. During extraction, the electrical and ground cables and the support cable are either coiled on the top of the reservoir, or wound onto storage reels. Essentially the reverse procedure (except for the introduction of purge gas) is followed when introducing a pump/motor unit into the casing.
  • the objective of the present invention is to provide an improved arrangement for the electrical and ground conduits and the support and lift cables which obviates, or at least substantially minimizes, the above- noted difficulties.
  • the major lengths of the electrical and ground conduits and the support cable are encased in a common flexible abrasion resistent sheath, thereby providing a unitary multi-strand cable.
  • the sheath is preferably foraminous to allow condensate to evaporate therethrough. Alternatively, however, the sheath can be impervious with its ends sealed to prevent condensate from forming therewithin.
  • the lower ends of the support cable and electrical and ground conduits extend beyond the lower end of the sheath for connection to the motor/pump unit.
  • the upper ends of the support cable and electrical and ground conduits extend beyond the upper end of the sheath.
  • the support cable is connected to the shiftable lift element of the sealing gland, the electrical conduits are connected to their junction point, and the ground conduit is connected to a ground connection.
  • Contact between the multi-strand cable and the lift cable is largely prevented by detachable brackets which maintain the two in a laterally spaced relationship. To the extent that any such contact does take place, however, damage to the electrical conduits is prevented by the abrasion resistant sheath.
  • the electrical and ground conduits and the support cable are tightly contained within the sheath, thereby preventing abrasive damage which might otherwise result from relative movement between these components.
  • the foraminous nature of the sheath allows any condensation on the enclosed conduits and support cable to evaporate to the atmosphere following removal of the multi-strand cable from the casing.
  • the support cable is sheathed with an electrical insulating material to protect it in the case of ground fault of the unit.
  • the protective sheath is preferably constituted of a metallic mesh, such as for example stainless steel.
  • the detachable brackets loosely surround the multi-strand cable and are tightly secured to the lift cable. Collars are tightly secured to the multi-strand cable at locations adjacent to each bracket. As the lift cable is pulled upwardly to raise the motor/pump unit, the connecting brackets contact the collars to raise the multi-strand cable.
  • the lift cable may be wound onto the rotating drum of a conventional hoisting apparatus, and as the connecting brackets arrive at the upper end of the casing, they are disconnected from the multi-strand cable and are allowed to slide on the lift cable
  • the multi-strand cable then may be conveniently wound onto storage drum, or neatly coiled on the reservoir roof.
  • a tank 10 provides a reservoir R for any liquid and especially for liquified gas or cryogenic material such as natural gas, methane, butane, propane, ammonia, ethylene or the like.
  • the liquid level L is somewhat below the roof 12 of the reservoir, and the intervening space may be filled with gas boiling off from the liquid, thereby pressurizing the reservoir to the vapor pressure of the liquid at the prevalent temperature.
  • the intervening space may be filled with another preferably inert gas.
  • a cylindrical casing 14 extends vertically through the roof 12 and downwardly to a lower region of the tank.
  • the casing is closed at its upper end by a removable head plate 16.
  • a discharge outlet 18 in an upper portion of the casing communicates with the exterior of the tank.
  • a purge gas inlet 20 is connected to the casing,: and the lower end of the casing carries a foot valve 22.
  • the foot valve has a poppet 24 yieldably biased by springs 26 to a normally closed position (as shown in Figures 4 and 5) in sealing engagement with an annular valve seat 28 to thereby isolate the interior of the casing 14 from the reservoir R.
  • An integral unit 30 consisting of a pump 32 driven by an electrically powered motor 34 is suitably dimensioned and configured to be passed through the upper casing end and to be raised and lowered through the casing to and from an operative position resting on a seat 36 herein illustrated as having a conical shape.
  • the pump engages the foot valve poppet as at 38.
  • the weight of the unit 30, augmented when necessary by a force exerted by purge gas introduced into the casing overcomes the biasing action of the springs 26 and the differential pressure acting on the poppet, with the result that the valve poppet is pushed downwardly to provide an inlet opening 40 between the poppet 24 and the valve seat 28.
  • the pump draws liquid from the reservoir R through opening 40 and pumps the liquid out through a pump discharge 42. From here, the liquid is forced up through the casing 14 where it exits through discharge opening 18.
  • the head plate 16 includes a sealing gland 44 with a vertically shiftable element 46 having a lifting eye 48 at its upper end and a connecting eye 50 at its lower end.
  • the eye 50 is detachably connected-by means of a U-bolt and cross pin assembly 52 to a support eye 54 which in turn is connected to the upper end of a flexible support cable 56.
  • the lower end of the support cable is attached to a connection such as an eye 58 at the top of the motor/pump unit 30.
  • the support cable 56 comprises part of a multi-strand cable 60 which also includes flexible electrical conduits 62 and at least one flexible ground conduit 64.
  • the major lengths of these conduits are surrounded by and tightly enclosed along with flexible fillers indicated typically at 66 in a flexible preferably foraminous protective sheath 68.
  • the upper and lower ends of the electrical conduits 62 and the ground conduit 64 extend respectively beyond the upper and lower ends of the sheath.
  • the upper and lower ends of the electrical conduits are connected respectively to separable connectors 70 located beneath the head plate 16 and a junction box 72 on th,. motor 34.
  • the upper and lower ends of the ground conduit 64 are connected respectively to a ground bracket 74 on the underside of the head plate 16 and the junction box 72.
  • a lift cable 76 is connected to the unit at a convenient location such as for example the eye 58 on motor/pump unit 30 and extends upwardly through the casing 14 in generally parallel relationship with the multi-strand cable 60, with the upper end of the lift cable being coiled when not in use on a storage bracket 78 on the underside of the head plate 16.
  • each bracket 80 consists of two halves 80a,80b held together by a connecting bolt 81 or the like which can be loosened to permit lateral separation of the halves.
  • the two halves 80a,80b tightly grip the lift cable 76 therebetween, thus fixing the position of each bracket 80 thereon.
  • the two halves 80a,80b define an enlarged opening 82 which loosely receives the multi-strand cable 60.
  • the brackets 80 are thus free to slide along the cable 60.
  • Collars 84 are tightly fixed to the multi-strand cable 60 adjacent to each bracket 80. The collars 84 are too large to pass through the bracket openings 82.
  • the collars 84 have centering brackets 86 detachably connected thereto.
  • the brackets 86 carry guide wheels 88 which are arranged to contact and roll along the inside of the casing.
  • Figure 1 illustrates all of the components of the pumping system in their operative positions.
  • the motor/ pump unit 30 holds the foot valve poppet 24 in the open position, thereby permitting the pump to receive fluid from the reservoir R and to pump the fluid up through the casing 14 to the discharge port 18.
  • the brackets 80 will serve to keep the cables 60 and 76 apart, thereby minimizing any tendency of the two to come into contact with one another.
  • the electrical conduits 62 and the ground conduit 64 will be safeguarded from damaging abrasion by the protective foraminous sheath 68.
  • a winch or other like lifting mechanism (not shown) is attached to the lifting eye 48 and the vertically shiftable element 46 is pulled upwardly through the sealing gland 44.
  • the element 46 is connected to the motor/pump unit 30 by the support cable 56, and hence as the unit is raised, the foot valve poppet 24 is biased by the springs 26 into closed sealing engagement with the valve seat 28, thereby effectively isolating the casing interior from the reservoir R.
  • purge gase is introduced through inlet 20. The purge gas forces any fluid in the casing 14 past the motor/pump unit 30 and back out through the foot valve 22 which now effectively acts as a one way check valve.
  • the head plate 16 is detached from the casing and raised sufficiently to permit insertion of a support bar 90 through the support eye 54.
  • the head plate is then lowered slightly until the support bar 90 comes to rest on the upper casing edge.
  • the entire weight of the motor/pump unit 30 is carried by the support bar via the support cable 56.
  • the electrical conduits 62 are disconnected from the junction point 70, the ground conduit 64 is disconnected from the ground bracket 74, and the U-bolt and crosspin assembly 52 is disconnected from the support eye 54, thereby freeing the head plate for removal to the side of the casing.
  • the lift cable 76 is connected to a lifting device, for example a winch 92, which operates to continue lifting the motor/pump unit 30 out of the casing.
  • the brackets 80 engage the collars 84 and thus cause the multi-strand cable 60 to be pulled upwardly along with the lift cable.
  • its associated centering bracket may be detached and set aside. This allows the multi-strand cable 60 with its collars 84 either to be conveniently stored on a drum 94, or alternatively coiled on the roof of the tank.
  • each bracket 80 arrives at the upper end of the casing, it is detached from the multi-strand cable 60 while being allowed to remain loosely attached to the lift cable 76.
  • the brackets 80 can slide along the lift cable as it is wound onto the winch 92.
  • the same or a replacement motor/pump unit may be reintroduced into the casing and lowered to its operative position by essentially reversing the foregoing procedure, with the exception that there is no need to reintroduce purge gas into the casing during the installation phase.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Eye Examination Apparatus (AREA)
  • Fluid-Driven Valves (AREA)
  • Seal Device For Vehicle (AREA)
EP85305757A 1985-06-05 1985-08-14 Tauchpumpenanlage mit einem aus mehreren Drähten bestehenden Kabel Withdrawn EP0208035A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US74173185A 1985-06-05 1985-06-05
US741731 1985-06-05

Publications (1)

Publication Number Publication Date
EP0208035A1 true EP0208035A1 (de) 1987-01-14

Family

ID=24981942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85305757A Withdrawn EP0208035A1 (de) 1985-06-05 1985-08-14 Tauchpumpenanlage mit einem aus mehreren Drähten bestehenden Kabel

Country Status (6)

Country Link
EP (1) EP0208035A1 (de)
JP (1) JPS61279789A (de)
KR (1) KR870000512A (de)
CN (1) CN85106951A (de)
AU (1) AU4642185A (de)
NO (1) NO853191L (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224777A (en) * 1988-10-22 1990-05-16 J W Swain Apparatus for pumping liquids from containers
EP1102374A3 (de) * 1999-11-15 2003-06-11 Itt Manufacturing Enterprises, Inc. Aufziehvorrichtung für elektrische Kabel
WO2010085204A1 (en) * 2009-01-20 2010-07-29 Gva Consultants Ab Submersible pump
WO2015077784A1 (en) * 2013-11-25 2015-05-28 Chart Inc. Pump column baffle for lng pump
WO2018183584A1 (en) 2017-03-28 2018-10-04 Baker Hughes, A Ge Company, Llc Wireline-deployed esp with self-supporting cable
CN111486335A (zh) * 2019-01-25 2020-08-04 国家能源投资集团有限责任公司 用于增压罐的隔离阀

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009013920A (ja) * 2007-07-06 2009-01-22 Shin Meiwa Ind Co Ltd 水中ポンプ吊下げ部材の上部支持装置
CN103291662B (zh) * 2013-05-27 2015-12-23 黄河水利职业技术学院 一种快捷护理维修水泵取出的方法及装置
US10024311B2 (en) * 2015-08-06 2018-07-17 Caterpillar Inc. Cryogenic pump for liquefied natural gas
CN108204379B (zh) * 2018-01-10 2019-10-29 江苏绩优机电科技有限公司 潜水轴流螺旋桨泵电缆悬挂系统
CN111412148A (zh) * 2020-02-29 2020-07-14 淄博博山绿源燃气设备有限公司 低温罐内潜液泵系统

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB251960A (en) * 1925-05-11 1926-09-16 Siemens Schuckertwerke Gmbh Means for supplying current to electric motors sunk in bore holes
GB474054A (en) * 1936-04-24 1937-10-25 Walter Todd Wells Improvements in combined wire ropes and electric conductors and in a method of constructing them
US2268223A (en) * 1937-11-19 1941-12-30 Thomas F Peterson Multiple conductor cable
US3876120A (en) * 1974-01-14 1975-04-08 Itt Pumping system and method
FR2337842A1 (fr) * 1976-01-12 1977-08-05 Itt Arrangement de clapet purge et procede de fermeture etanche
GB2085078A (en) * 1980-10-09 1982-04-21 Itt Submersible Pumping System
USRE31445E (en) * 1977-10-19 1983-11-22 Itt Submerged pumping system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5472233A (en) * 1977-11-22 1979-06-09 Maruki Shokai Method of preparing polyamide resin composition for laquer ware
JPS58167897A (ja) * 1982-03-29 1983-10-04 Hitachi Ltd 潜没可能ポンプ装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB251960A (en) * 1925-05-11 1926-09-16 Siemens Schuckertwerke Gmbh Means for supplying current to electric motors sunk in bore holes
GB474054A (en) * 1936-04-24 1937-10-25 Walter Todd Wells Improvements in combined wire ropes and electric conductors and in a method of constructing them
US2268223A (en) * 1937-11-19 1941-12-30 Thomas F Peterson Multiple conductor cable
US3876120A (en) * 1974-01-14 1975-04-08 Itt Pumping system and method
FR2337842A1 (fr) * 1976-01-12 1977-08-05 Itt Arrangement de clapet purge et procede de fermeture etanche
USRE31445E (en) * 1977-10-19 1983-11-22 Itt Submerged pumping system
GB2085078A (en) * 1980-10-09 1982-04-21 Itt Submersible Pumping System

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2224777A (en) * 1988-10-22 1990-05-16 J W Swain Apparatus for pumping liquids from containers
GB2224777B (en) * 1988-10-22 1991-10-30 J W Swain Improvements in or relating to pumping arrangements
EP1102374A3 (de) * 1999-11-15 2003-06-11 Itt Manufacturing Enterprises, Inc. Aufziehvorrichtung für elektrische Kabel
WO2010085204A1 (en) * 2009-01-20 2010-07-29 Gva Consultants Ab Submersible pump
US8517700B2 (en) 2009-01-20 2013-08-27 Gva Consultants Ab Submersible pump
WO2015077784A1 (en) * 2013-11-25 2015-05-28 Chart Inc. Pump column baffle for lng pump
US9551330B2 (en) 2013-11-25 2017-01-24 Chart Inc. Frangible closure coupling for liquid natural gas tank
US10125751B2 (en) 2013-11-25 2018-11-13 Chart, Inc. Multimode gas delivery for rail tender
WO2018183584A1 (en) 2017-03-28 2018-10-04 Baker Hughes, A Ge Company, Llc Wireline-deployed esp with self-supporting cable
EP3601724A4 (de) * 2017-03-28 2020-12-23 Baker Hughes, a GE company, LLC Drahtseil, insbesondere mit selbsttragendem seil
CN111486335A (zh) * 2019-01-25 2020-08-04 国家能源投资集团有限责任公司 用于增压罐的隔离阀
CN111486335B (zh) * 2019-01-25 2021-11-16 国家能源投资集团有限责任公司 用于增压罐的隔离阀

Also Published As

Publication number Publication date
CN85106951A (zh) 1986-12-03
KR870000512A (ko) 1987-02-18
NO853191L (no) 1986-12-08
JPS61279789A (ja) 1986-12-10
AU4642185A (en) 1986-12-11

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Inventor name: JONES, JAMES W.