US20150184645A1 - Pump Column Baffle for LNG Pump - Google Patents

Pump Column Baffle for LNG Pump Download PDF

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Publication number
US20150184645A1
US20150184645A1 US14/553,888 US201414553888A US2015184645A1 US 20150184645 A1 US20150184645 A1 US 20150184645A1 US 201414553888 A US201414553888 A US 201414553888A US 2015184645 A1 US2015184645 A1 US 2015184645A1
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US
United States
Prior art keywords
pump
column
tank
lng
pump column
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
US14/553,888
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English (en)
Inventor
Terry Johnson
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.)
Chart Inc
Original Assignee
Chart Inc
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Filing date
Publication date
Application filed by Chart Inc filed Critical Chart Inc
Priority to US14/553,888 priority Critical patent/US20150184645A1/en
Assigned to CHART INC. reassignment CHART INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JOHNSON, TERRY
Publication of US20150184645A1 publication Critical patent/US20150184645A1/en
Assigned to JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT reassignment JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHART INC.
Abandoned 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
    • F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61C—LOCOMOTIVES; MOTOR RAILCARS
    • B61C17/00—Arrangement or disposition of parts; Details or accessories not otherwise provided for; Use of control gear and control systems
    • B61C17/02—Bunkers; Tanks; Tenders; Water or fuel pick-up or scoop apparatus; Water or fuel supply fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/10—Means for stopping flow from or in pipes or hoses
    • F16L55/1007—Couplings closed automatically when broken
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • 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
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/06—Closures, e.g. cap, breakable member
    • 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
    • F17C3/00—Vessels not under pressure
    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • 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
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F17C7/02—Discharging liquefied gases
    • F17C7/04—Discharging liquefied gases with change of state, e.g. vaporisation
    • 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
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
    • F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
    • F04B2015/081—Liquefied gases
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/035—Orientation with substantially horizontal main axis
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/054—Size medium (>1 m3)
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/03—Thermal insulations
    • F17C2203/0391—Thermal insulations by vacuum
    • 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
    • F17C2203/00—Vessel construction, in particular walls or details thereof
    • F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
    • F17C2203/0602—Wall structures; Special features thereof
    • F17C2203/0612—Wall structures
    • F17C2203/0626—Multiple walls
    • F17C2203/0629—Two walls
    • 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
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0379—Manholes or access openings for human beings
    • 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
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/032—Hydrocarbons
    • F17C2221/033—Methane, e.g. natural gas, CNG, LNG, GNL, GNC, 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
    • 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
    • F17C2227/0107—Propulsion of the fluid by pressurising the ullage
    • 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
    • F17C2227/0121—Propulsion of the fluid by gravity
    • 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
    • F17C2227/0135—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
    • 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
    • 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
    • F17C2227/04—Methods for emptying or filling
    • F17C2227/048—Methods for emptying or filling by maintaining residual pressure
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/043—Pressure
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04—Indicating or measuring of parameters as input values
    • F17C2250/0404—Parameters indicated or measured
    • F17C2250/0447—Composition; Humidity
    • 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
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0636—Flow or movement of content
    • 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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/03—Treating the boil-off
    • F17C2265/031—Treating the boil-off by discharge
    • 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
    • F17C2265/00—Effects achieved by gas storage or gas handling
    • F17C2265/06—Fluid distribution
    • F17C2265/066—Fluid distribution for feeding engines for propulsion
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • 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
    • F17C2270/00—Applications
    • F17C2270/01—Applications for fluid transport or storage
    • F17C2270/0165—Applications for fluid transport or storage on the road
    • F17C2270/0168—Applications for fluid transport or storage on the road by vehicles
    • F17C2270/0173—Railways
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1624—Destructible or deformable element controlled

Definitions

  • This disclosure relates to a pump column for positioning and accessing in-tank pumps such as for use in cryogenic fluid tanks and pumps.
  • a tender car (sometimes referred to as a “rail tender”) is a special rail vehicle hauled by a rail locomotive.
  • the tender car contains the locomotive's fuel.
  • Some rail vehicles are fueled by liquid natural gas (LNG) such that the tender car is an LNG tender car, which typically includes a pump that is submersed within LNG in a tank. The pump is submersed in the LNG tank and is configured to pump the LNG to the rail locomotive.
  • LNG liquid natural gas
  • the pumps may be shutoff and turned on at various times.
  • the in-tank pump enables immediate pumping capability as the pumps remain primed.
  • External sumps are isolated during periods of non-use, which means the pump and external sump configuration must be re-primed every time the pump is reactivated. This is undesirable from a locomotive operational perspective.
  • the means of providing access to the pump and its associated electrical connections/sensors is done via a pump column.
  • the pump column is secured inside the tank (both inner and outer tanks), and is accessed from outside the tank.
  • a pump column that positions a submersible pump within an LNG cryogenic storage tank.
  • the tank functions as a tender.
  • Current rail tenders with in-tank submersible pumps are often placed in the tank with the only access for service being a manway.
  • the tank In order to service the pump or access a sensor the tank must be completely emptied and then rewarming. This permits a service technician can enter the tank and repair the equipment.
  • a pump column that can provide pump access without emptying the tank.
  • the disclosed pump column Pump column provides easier and safer removal and access to a pump within a cryogenic vessel for maintenance or replacement. It has a manufacturable design that reduces or minimizes heat loss for the cryogenic storage vessel system.
  • the column has a structurally robust design that gives consideration for high vibration mobile environments as well as differential movements of an inner tank containment shell and an outer vacuum jacket shell of the storage tank.
  • a device for accessing a pump inside a cryogenic fluid tank comprising: an elongated, vertical column structure defining an internal volume; a pump contained in a lower region of the column structure; at least one seal that provides a seal between the internal volume and a region exterior to the internal volume; a lift mechanism that can be actuated to raise the pump; and an actuator attached to the lift mechanism, the actuator adapted to raise the pump upon actuation.
  • FIG. 1 shows a schematic representation of a tank that contains a fluid such as liquid natural gas and a fuel pump.
  • FIG. 2 shows a side view of an exemplary embodiment of a pump column.
  • a pump column for use with a submersible pump in an LNG tank, such as for use in a rail tender.
  • the pump column is configured to enable rapid removal and access to a pump submerged within an LNG tank containing LNG.
  • the pump column provides a manufacturable design that minimizes heat loss for the tank and provides a structurally robust configuration.
  • the pump column is configured to maintain the vacuum integrity of the LNG tank at all times.
  • FIG. 1 shows a schematic representation of a tank 105 that contains a fluid such as liquid natural gas (LNG).
  • LNG liquid natural gas
  • the tank 105 can be part of a rail tender hauled by a rail locomotive.
  • the tender car contains the locomotive's fuel in the form of LNG although it should be appreciated that the pump column can be used in connection with other cryogenic fluids stored in tanks.
  • the tank 105 is formed of an outer tank 105 a in which is nested an inner tank 105 b in a vacuum-sealed manner such that a vacuum space exists between the inner and outer tanks.
  • a fluid pump 110 is positioned inside the inner tank 105 b for pumping the LNG fuel to the locomotive such as via one or more fluid conduits that connect the tank 105 to the locomotive.
  • a pump column 115 is positioned inside the tank 105 such that the pump column 115 extends from an upper region of the tank 105 downwardly to the pump 110 .
  • the pump column 115 is configured to enable rapid removal and access to the pump 110 .
  • the pump column may vary in structure and some exemplary embodiments are described herein.
  • the pump column includes a top works portion comprised of a high integrity seal that seals the internal portion of the pump from an exterior region.
  • a malleable portion of the pump column such as a bellows, provides for shape changing to compensate for movement such as a result of pressure differentials. Vacuum or gas monitoring of the top works can be used.
  • FIG. 2 shows a side view of a first embodiment of the pump column 115 . It should be appreciated that the embodiment of FIG. 2 is an example and that variances in the structure and mechanical components of the pump column are within the scope of this disclosure.
  • the illustrated embodiment of the pump column 115 is attached to and contains the pump 110 and includes a pump column housing 205 that defines an elongated, vertical chamber in which the pump 110 is located at a bottom region.
  • the pump column housing 205 may be a cylindrical housing that extends upward to the inner tank 105 b and then transitions to an exterior bellows 210 that is attached to the outer tank 105 a such as via a flange 215 .
  • the exterior bellows may be optional and may not be needed for small tanks.
  • a pump column blind flange 220 is positioned at the top of the pump column 115 and encloses the interior chamber of the pump column 115 .
  • One or more openings or ports 223 may extend through the blind flange 220 to provide access to components within the pump column, as described below.
  • the pump 110 is connected to the blind flange 220 via an interconnected series of components, including a jack rod 225 that is movably connected on one end to the pump 110 and on an opposite end to an isolation baffle plate 227 .
  • a lift mechanism such as a jack screw 230 , extends through the blind flange 220 via a threaded connection and also connects to the isolation baffle plate 227 .
  • An interior bellows 233 connects the blind flange 220 to an upper region of the isolation baffle plate 227 .
  • the pump 110 rests atop a foot plate 235 that is movably connected to the pump column housing 205 via a foot alignment spring assembly 237 .
  • a foot seal 239 provides a sealing engagement with the foot plate 235 .
  • a foot boss 250 is positioned adjacent the column as described in more detail below.
  • a portion of the pump 110 also rests on a pump seal latch 242 and a seal 245 .
  • the pump column housing 205 is a cylindrical body or structure component that houses the pump 110 .
  • the pump column housing 205 may be welded to the inner tank at an end of the pump column.
  • the foot plate 235 is a flat plate located at the base of the pump column.
  • the foot plate 235 is sized and positioned to raise and/or lower the pump's vertical position upon actuation of the jack screw (or other actuation device) so that access to LNG is obtained.
  • the foot plate 235 also rises and seals off the base of the pump column.
  • the foot alignment pins and spring assembly 237 is a spring assembly positioned on one or more alignment pins. The springs are biased so that they can exert a force on the foot plate 235 to raise the foot plate 235 as the pump is elevated.
  • the foot seal 239 is formed of an o-ring or equivalent compression type seal. As the foot pedal 235 is raised, the foot seal 239 is compressed and provides a seal mechanism such that the pump can be removed from the column.
  • the housing distal boss provides a surface against which the foot seal 239 compresses for sealing off the base of the pump column.
  • the foot boss 250 is welded or otherwise attached to the inner tank 105 b. It provides structural support to secure against lateral forces on the pump column.
  • alignment pins and corresponding holes are included in the foot plate 235 and the housing distal boss.
  • the foot boss 250 is sized to extend above the housing distal boss. The foot boss 250 does not need to be circumferential around the entire pump column. In an embodiment, the foot boss 250 provides a three point support to the pump column.
  • the pump column flange 215 is welded or otherwise attached onto the outer tank and the pump column blind flange 220 is mounted to pump column flange 215 .
  • the pump column blind flange 220 forms a top plate for the pump column. It provides a sealing surface for preventing LNG from escaping the pump column. It is bolted or otherwise sealingly attached to the pump column flange 215 .
  • the exterior bellows 210 is attached to an upper region of the pump column housing 205 .
  • the exterior bellows 210 may be, for example, a stainless steel convoluted bellows.
  • the exterior bellows 210 provides multiple functions.
  • the exterior bellows is welded or attached to the pump column flange 215 (which is welded to the outer tank) and both are welded or otherwise attached to the pump column housing 205 (which is welded to the inner tank).
  • the thinner metal or material of the exterior bellows 210 inhibits heat conduction from the inner tank to the outer tank.
  • the convoluted shaped bellows of the exterior bellows 210 is configured to retain a pressure differential between the inner and outer tanks (from positive pressure of the inner tank to vacuum in the annular space between inner and outer tank).
  • the exterior bellows which can change shape by expanding or retracting, serves as an expansion joint for thermal movements of the inner tank with respect to the outer tank. These movements are not necessarily on the vertical axis of the pump column so even lateral movements can be accommodated by the bellows.
  • the isolation baffle plate 227 is located below the pump column blind flange 220 .
  • the purpose of the Isolation baffle plate varies.
  • the isolation baffle plate 227 prevents LNG from exiting along the screw threads of the pump jack screw 230 .
  • the isolation baffle plate 227 serves a push plate from the pump jack screw to the jack rod 225 to the pump 110 .
  • the interior bellows 233 is a convoluted bellows (such as stainless steel) attached to the isolation baffle plate 227 and to the pump column blind flange 220 .
  • the interior bellows 233 inhibits heat transfer of the cold LNG to the pump column blind flange 220 by reducing the contact area and by the thin metal conductive path. Furthermore, as the jack screw 230 is advance or retracted, the isolation plate 227 is correspondingly moved.
  • the isolation bellows maintains pressurized sealing with jack screw adjustments.
  • the pump jack screw 230 is actuated such as by turning to raise or lower the pump within the pump column and accordingly to seal or open the flow path along the interior of the foot plate.
  • the jack screw 230 is connected to the jack rod 225 via the baffle plate 227 .
  • the jack rod is connected to the pump and to the isolation plate via proximal and distal linkages.
  • Alternative embodiments include hydraulic presses or jacks. The linkages permit some misalignment between the pump and the pump column blind flange.
  • the pump seat seal 245 isolates the discharge of the pump within the pump column housing from the pump supply pressure (LNG tank pressure). Since the discharge pressure is higher than the pump supply pressure, the pump is compressed against the pump seal.
  • the pump seal latch 242 provides a detent that mechanically attaches the pump to the pump column. The latch can be overcome by forceful retraction of the pump.
  • the pump discharge pipe 260 serves as a discharge port for the pump.
  • the pump column discharge pipe 255 connects the pump column housing (discharge pressure) with the exterior components of the tank, e.g heat exchangers, recirculation lines, etc.
  • the system may also include ports for other components including, for example, a relief valve, vents, and electrical.
  • the steps are performed by a person that has access to the tank 105 .
  • the person verifies or purges the top works portion of the column to a non-flammable atmosphere for hot work.
  • the person then opens the top works (such as the top flange 220 , for access to the pump lift mechanism.
  • the top works can be opened in a variety of manners.
  • the person next actuates or otherwise operates the lift mechanism to raise the pump. In a non-limiting example, this can be accomplished by actuating the jack screw 230 .
  • the foot valve seal 239 is used to isolate the pump column. In order to improve the foot plate seal, a pressure differential is created by blowing down the pressure in the pump column.
  • the user then purges the pump column.
  • the person can also sample the space or region within the pump column to verify a non-hazardous atmosphere within the pump column.
  • the sample can be done in any of a variety of well-known manners.
  • the user In order to access the pump, the user unbolts a pump column head plate from the pump column flange. The user then lifts the head plate, the lift mechanism, and the pump from the column while continuously purging of the pump column space as required. The removal process is then complete.
  • the user purges the pump column and samples the column space gas to verify a non-hazardous atmosphere as in the removal process.
  • the user then installs the pump into the pump column by lowering the head plate, lift assembly, and pump into the pump column.
  • the user then bolts or otherwise attaches the pump column head plate to the pump column flange. This seals the pump column space between the head plate and the foot valve.
  • the user closes the sampling line, if present, and pressurizes the pump column.
  • the pump column is desirably pressurized sufficiently to equalize differential pressure across the foot valve such that the lift assembly can be operated to open the foot valve and restore communication between the storage vessel and the inlet to the pump.
  • the user then vents the pump column as required in order to assure the purity of the contents of the pump column.
  • the secondary sealing systems are then restored for lift assembly and sensor penetrations of the head plate.
  • the user insulates and seals the top works and pulls vacuum to restore system thermal performance. The installation is then complete.
US14/553,888 2013-11-25 2014-11-25 Pump Column Baffle for LNG Pump Abandoned US20150184645A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/553,888 US20150184645A1 (en) 2013-11-25 2014-11-25 Pump Column Baffle for LNG Pump

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US201361908648P 2013-11-25 2013-11-25
US201361908659P 2013-11-25 2013-11-25
US201361908632P 2013-11-25 2013-11-25
US201361908594P 2013-11-25 2013-11-25
US201361909567P 2013-11-27 2013-11-27
US201361909884P 2013-11-27 2013-11-27
US14/553,888 US20150184645A1 (en) 2013-11-25 2014-11-25 Pump Column Baffle for LNG Pump

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US14/553,933 Active US9551330B2 (en) 2013-11-25 2014-11-25 Frangible closure coupling for liquid natural gas tank
US14/553,888 Abandoned US20150184645A1 (en) 2013-11-25 2014-11-25 Pump Column Baffle for LNG Pump

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US14/553,933 Active US9551330B2 (en) 2013-11-25 2014-11-25 Frangible closure coupling for liquid natural gas tank

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CA (3) CA2931448C (pl)
ES (2) ES2805449T3 (pl)
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CN107100764A (zh) * 2017-07-04 2017-08-29 陕西舜洋电子科技有限公司 一种车用lng供气装置
FR3089599B1 (fr) * 2018-12-06 2020-11-13 Air Liquide Réservoir de stockage de fluide cryogénique
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Publication number Priority date Publication date Assignee Title
US10125751B2 (en) 2013-11-25 2018-11-13 Chart, Inc. Multimode gas delivery for rail tender
FR3038360A1 (fr) * 2015-07-03 2017-01-06 Gaztransport Et Technigaz Dispositif de fixation de canalisation dans un logement
WO2017006035A1 (fr) * 2015-07-03 2017-01-12 Gaztransport Et Technigaz Fixation de canalisation dans un logement
US10415758B2 (en) 2015-07-03 2019-09-17 Gaztransport Et Technigaz Securing a pipe in a housing
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US10955089B2 (en) 2016-01-29 2021-03-23 Cryostar Sas Set for dispensing liquefied gas
US10578085B1 (en) * 2017-05-01 2020-03-03 Mark Lee Stang Sealed modular fluid distribution system

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US10125751B2 (en) 2018-11-13
PL3077653T3 (pl) 2021-02-08
CA2931446A1 (en) 2015-05-28
EP3077653A1 (en) 2016-10-12
MX2016006792A (es) 2017-01-06
CA2931448C (en) 2022-12-13
US20150143821A1 (en) 2015-05-28
ES2812604T3 (es) 2021-03-17
EP3074677A4 (en) 2017-10-11
EP3074633A4 (en) 2017-06-28
EP3074677A1 (en) 2016-10-05
ES2805449T3 (es) 2021-02-12
CA2931527C (en) 2021-11-16
CA2931446C (en) 2022-10-25
EP3077653A4 (en) 2017-12-13
LT3074677T (lt) 2020-09-25
PL3074677T3 (pl) 2020-10-19
HRP20201283T1 (hr) 2020-11-13
US20150144203A1 (en) 2015-05-28
EP3074633B1 (en) 2020-10-28
PT3077653T (pt) 2020-08-28
EP3074633A1 (en) 2016-10-05
WO2015077785A1 (en) 2015-05-28
HRP20201082T1 (hr) 2020-10-30
CA2931448A1 (en) 2015-05-28
MX2016006791A (es) 2017-01-06
LT3077653T (lt) 2020-10-12
MX2016006793A (es) 2017-01-11
EP3077653B1 (en) 2020-06-17
WO2015077784A1 (en) 2015-05-28
CA2931527A1 (en) 2015-05-28
EP3074677B1 (en) 2020-04-15
US9551330B2 (en) 2017-01-24
WO2015077787A1 (en) 2015-05-28
PT3074677T (pt) 2020-07-15

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