EP0628723B1 - Selbstkühlende integrierte Pumpe für kryogene Flüssigkeit - Google Patents

Selbstkühlende integrierte Pumpe für kryogene Flüssigkeit Download PDF

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Publication number
EP0628723B1
EP0628723B1 EP94401088A EP94401088A EP0628723B1 EP 0628723 B1 EP0628723 B1 EP 0628723B1 EP 94401088 A EP94401088 A EP 94401088A EP 94401088 A EP94401088 A EP 94401088A EP 0628723 B1 EP0628723 B1 EP 0628723B1
Authority
EP
European Patent Office
Prior art keywords
pump body
pump
cryogenic liquid
tank
well
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.)
Expired - Lifetime
Application number
EP94401088A
Other languages
English (en)
French (fr)
Other versions
EP0628723A1 (de
Inventor
Norbert Scherrer
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.)
Societe Europeenne de Propulsion SEP SA
Original Assignee
Societe Europeenne de Propulsion SEP SA
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 Societe Europeenne de Propulsion SEP SA filed Critical Societe Europeenne de Propulsion SEP SA
Publication of EP0628723A1 publication Critical patent/EP0628723A1/de
Application granted granted Critical
Publication of EP0628723B1 publication Critical patent/EP0628723B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/08—Cooling; Heating; Preventing freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S417/00—Pumps
    • Y10S417/901—Cryogenic pumps

Definitions

  • the present invention relates to a self-cooled cryogenic liquid pump intended to be removably integrated into a cryogenic liquid reservoir and allowing either the transfer of this liquid at moderate pressure, or the production of gas under high pressures.
  • Nitrogen, argon, oxygen, hydrogen and liquid helium are the products most particularly concerned by such a device.
  • Patent document WO 84/02969 has attempted to provide a solution to these problems by proposing to immerse the pump in the cryogenic liquid (in this case liquid nitrogen).
  • the pump in this case liquid nitrogen.
  • the pump has proved to be particularly fragile, in particular at the level of its shaft line, limiting the necessary reliability that can be expected from such a device.
  • the present invention aims to overcome the aforementioned drawbacks and to provide a removable and self-cooled cryogenic liquid pump which can be used with any type of cryogenic liquid and in particular hydrogen and liquid helium.
  • Another object of the invention is to provide a pump of simple and reliable structure which allows perfect control of the pressure, making it particularly adaptable to different operating conditions.
  • a cryogenic liquid pump provided with a pump body and actuated by a motor assembly and integrated into a cryogenic liquid tank, characterized in that said removable pump body can slide in a well and be selectively activated. communication with the reservoir, a first valve allowing, in the open position, a transfer of the liquid from the reservoir to the pump body before its evacuation in liquid or gaseous form through an outlet orifice and a second valve allowing, in the position of opening, the establishment of a cold gas flow from the gaseous sky of this tank towards a rear end of the pump body from which it is evacuated towards the outside by a purge / purge orifice.
  • the purge / sweep orifice is provided at the outlet with a device for adjusting the cold gas flow leaving the pump body.
  • the adjustment device makes it possible to regulate the cold gas flow discharged to the outside which may result, for example, from additional calories due to friction losses from the pump.
  • the first and second valves are put in the open position, during installation and fixing of the pump body in the well, by a double stopper fixed to a front end of this pump body and acting on each of these valves to cause their lifting.
  • the second valve is placed in the open position, during installation and fixing of the pump body in the well, by a stopper fixed to a front end of the pump body and causing it to be lifted. , the first valve being placed in the open position by a control device external to the pump body.
  • this pump comprises sealing devices placed respectively between the well and the pump body and between the well and the exterior.
  • the pump body is coupled to a sealed motor, the assembly formed by these two elements being isolated from the outside by a sealed connection connecting them in solidarity.
  • the pump body is coupled to a motor with submerged rotor, the stator being separated from the rotor by a sealed jacket secured to the pump body.
  • the watertight partition formed by the connection or the jacket has a bleed orifice.
  • the pump body is preferably mounted on the internal wall of the tank, a sealed connection connecting the external wall of the tank to the side wall of the well and making it possible to leave the space between walls at the pressure of the vacuum to which it was subjected before integrating the pump.
  • the pump according to the invention will be, without this list being limiting, of the centrifugal, axial or piston type.
  • FIG 1 illustrates a first embodiment of a cryogenic liquid pump according to the invention.
  • the cryogenic pump described with reference to this figure is a high pressure piston pump intended for the production of gas and driven by a sealed electric motor.
  • the invention is not limited to this single type of pump and an axial, centrifugal pump (see for example Figures 2 and 3) or of any other type can be similarly implemented.
  • the use of an electric motor is not compulsory and all types of motor can be envisaged such as hydraulic, pneumatic or even thermal motors without omitting gas turbines for example.
  • the pump according to the invention comprises a pump body 10 which can be installed by sliding in a well 12, a first end 18 of which is rigidly fixed, for example by welding, to a wall 14 of a reservoir 16 containing a cryogenic liquid.
  • This first end of the well is closed by a valve device 20, the opening of which, bringing the reservoir into communication with the well, is caused, during the installation of the pump body in the well, by the action of 'A double cleat 22 acting on the seat of the valve device.
  • the valve device comprises a first valve 24, the lifting of which by the double stopper causes the cryogenic liquid to pass through the pump body and a second valve 26, the lifting of which by this same stopper allows the overhead gas communication of this tank with the rear part 28 of the pump body, this communication being made possible by the presence of a tube 30 passing through the reservoir between the valve, point of withdrawal of the liquid, and the overhead gas.
  • the free end of the well 12 is terminated by an external flange 32 on which is fixed, by a screw / washer assembly, a first end 36 of the pump body, an opposite end 38 of this pump body being in contact with The reservoir.
  • Flange seals 76 ensure, during a partial withdrawal of the pump, a seal between the side wall of the well and the outside.
  • the piston pump body is actuated by an oblique turntable assembly 42 driven by a shaft 44 itself connected to a sealed electric motor 46 by means of a coupling 48.
  • the motor 46 is mechanically decoupled by force of the pump by a support structure 50 (which can advantageously be fixed to the wall of the tank) ensuring centering of the motor by an axis 52.
  • a deformable tight connection 54 ensures sealing (a seal 56 being kept pressed against the end 36 of the pump body by fixings 58) and the isolation of the entire device according to the invention from the outside.
  • the fluid is evacuated by an outlet pipe 60 connected to the rear end (in the direction of introduction of the pump) 36 of the pump body.
  • An adjustment device 62 is placed at the outlet of a purge / sweep orifice 64 opening on the side wall of the well 12 and on the inside of the pump body 10, substantially at the free end 32 of the well.
  • a second bleed orifice 68 is present at the level of the deformable tight connection 54.
  • the reservoir 16 can be provided with a second wall 70, a second deformable link 72 then connecting it to the side wall of the well 12 in a sealed manner, the space 74 between the two walls of this reservoir being at the pressure of the empty.
  • the operation of the pump according to the invention is as follows. It is recalled that the installation of the pump body in the well causes the latter to communicate with the tank and in particular the connection of the gaseous sky of the tank, which is by nature in overpressure relative to the outside (any tank closed cryogenic increases in pressure), with the rear part of the pump body.
  • the opening of the adjustment device then allows the establishment of a cold gas flow to the outside which will naturally cool the entire pump body by compensating for the thermal inputs of the device and therefore allow a immediate start of the pump. Once it is started and in operation, the excess calories due in particular to friction losses in the pump body will also be evacuated by the purge / sweep orifice, the adjustment device then having a larger opening to allow the evacuation of those extra calories.
  • the outlet line must be thermally compatible with the fluid used, a thermally insulated or vacuum-insulated outlet line may for example be necessary.
  • cryogenic pump according to the invention offers exceptional qualities of availability which reinforce its ability to instant start made possible by the withdrawal of cold gas inside the cryogenic liquid tank.
  • FIG. 2 illustrates a second embodiment of a cryogenic liquid pump according to the invention.
  • the pump described here is a centrifugal pump with a sealed electric motor.
  • the elements common with the pump of Figure 1 have the same references.
  • the body of the centrifugal pump 10 is connected to a valve body 100 comprising a seat 110 whose opening is controlled by a control assembly 120 and the turbine 130 ensures the pumping of the liquid as soon as this seat is opened.
  • a stopper 220 placed on the valve body causes, when the pump is put in place, the opening of a valve 260 for placing the gas headspace in communication with the rear of the pump body.
  • a filter 200 is placed at the inlet of the valve body at the level of the reservoir 16.
  • this pump is almost identical to the previous one (subject of course to the operating conditions: at low pressure for this centrifugal liquid transfer pump or at medium and high pressure for the previous piston pump) with the exception of liquid transfer from tank to the pump, the departure of which can, in this embodiment, be controlled by means of the control assembly 120.
  • the cooling of the device is immediate, the installation of the pump in the well having the effect of open the valve 260 and therefore cause the establishment of a cold gas flow in this pump.
  • FIG. 3 is an alternative embodiment of a liquid cryogenic pump of FIG. 2 in which the control motor 400 of the pump is of the semi-submerged type with a rotor 460 subjected to the action of cold gases coming from the tank and a stator 470 isolated from these by a gap 480 secured to the pump body by the fixings 58.
  • a purge member 68 is present but placed on the jacket 480. It can be noted that this configuration is especially interesting when the rotor materials are compatible with the nature of the gas present in the pump body.
  • FIGS. 4 to 6 schematically show examples of the arrangement of the pump according to the invention at the level of cryogenic liquid tanks of different shapes.
  • Each however has a filling / emptying line 150 and a degassing line 160.
  • the well 12 the pump and the motor have not been shown
  • the well is advantageously placed at the base of the tank and the degassing line at its top.
  • the filling line is also placed at the base of the tank.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Reciprocating Pumps (AREA)

Claims (9)

  1. Pumpe für kryogene Flüssigkeit, die mit einem Pumpenkörper versehen ist, durch eine Antriebsgruppe betätigt wird und in einen Vorratsbehälter für kryogene Flüssigkeit integriert ist, dadurch gekennzeichnet, daß der genannte Pumpenkörper (10) ausbaubar ist und durch Verschieben in einem Schacht (12) wahlweise in Verbindung mit dem Vorratsbehälter (16) bringbar ist, wobei ein erstes Klappenventil (24, 110) in der Öffnungslage eine Überführung der Flüssigkeit des Vorratsbehälters zum Pumpenkörper hin vor seiner Evakuierung in flüssiger oder gasförmiger Form durch eine Austrittsöffnung (60) gestattet und ein zweites Klappenventil (26, 260) in der Öffnungslage die Einrichtung eines gasförmigen, kalten Durchsatzes vom gasgefüllten Kopfraum dieses Vorratsbehälters zu einem hinteren Ende (28) des Pumpenkörpers gestattet, von dem er nach außen durch eine Auslaß-/Spülöffnung (64) abgelassen wird.
  2. Pumpe für kryogene Flüssigkeit nach Anspruch 1, dadurch gekennzeichnet, daß die Ablaß-/Spülöffnung (64) am Austritt mit einer Vorrichtung (62) zur Einstellung des kalten, gasförmigen Durchsatzes ausgestattet ist, der aus dem Pumpenkörper (10) herkommt.
  3. Pumpe für kryogene Flüssigkeit nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß das erste (24) und zweite (26) Klappenventil während des Einbaus und der Befestigung des Pumpenkörpers im Schacht durch einen Doppelmitnehmer (22) in die Öffnungslage verbracht werden, der am vorderen Ende (38) dieses Pumpenkörpers befestigt ist und auf jedes dieser Klappenventile einwirkt, um bei diesen das Abheben (levé) hervorzurufen.
  4. Pumpe für kryogene Flüssigkeit nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, daß das zweite Klappenventil (260) während des Einbaus und der Befestigung des Pumpenkörpers im Schacht durch einen Mitnehmer (220) in die Öffnungslage versetzt wird, der an einem vorderen Ende des Pumpenkörpers befestigt ist und sein Abheben hervorruft, und daß das erste Klappenventil (110) durch eine Steuervorrichtung (120) außerhalb des Pumpenkörpers in die Öffnungslage verbracht wird.
  5. Pumpe für kryogene Flüssigkeit nach irgendeinem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß sie Dichtungsvorrichtungen (40, 76) aufweist, die jeweils zwischen dem Schacht und dem Pumpenkörper sowie zwischen dem Schacht und der Außenseite eingesetzt sind.
  6. Pumpe für kryogene Flüssigkeit nach irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Pumpenkörper an einen dichten Antrieb bzw. Motor (46) angekoppelt ist, wobei die Anordnung von zwei Elementen gebildet ist, die gegenüber der Außenseite durch eine dichte Verbindung (54) isoliert ist, die sie fest verbindet.
  7. Pumpe für kryogene Flüssigkeit nach irgendeinem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß der Pumpenkörper an einen Motor (400) mit eingetauchtem Läufer angekoppelt ist, wobei der Stator (470) vom Läufer (460) durch einen dichten Mantel (480) getrennt ist, der fest mit dem Pumpenkörper verbunden ist.
  8. Pumpe für kryogene Flüssigkeit nach Anspruch 6 oder Anspruch 7, dadurch gekennzeichnet, daß der dichte Abschluß (54, 480) eine Auslaßöffnung aufweist.
  9. Pumpe für kryogene Flüssigkeit nach irgendeinem der Ansprüche 1 bis 8, integriert in einen doppelwandigen Vorratsbehälter (16), dadurch gekennzeichnet, daß der Pumpenkörper (10) auf der Innenwand (14) des Vorratsbehälters angebracht ist, wobei eine dichte Verbindung (72) die Außenwand (70) des Vorratsbehälters mit der Seitenwand des Schachtes verbindet und es gestattet, den zwischenraum (74) zwischen den Wänden bei dem Vakuumdruck zu belassen, auf den er vor dem Einbau der Pumpe gebracht wurde.
EP94401088A 1993-06-11 1994-05-17 Selbstkühlende integrierte Pumpe für kryogene Flüssigkeit Expired - Lifetime EP0628723B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9307088A FR2706540B1 (fr) 1993-06-11 1993-06-11 Pompe liquide cryogénique intégrée amovible et autorefroidie.
FR9307088 1993-06-11

Publications (2)

Publication Number Publication Date
EP0628723A1 EP0628723A1 (de) 1994-12-14
EP0628723B1 true EP0628723B1 (de) 1996-12-04

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Application Number Title Priority Date Filing Date
EP94401088A Expired - Lifetime EP0628723B1 (de) 1993-06-11 1994-05-17 Selbstkühlende integrierte Pumpe für kryogene Flüssigkeit

Country Status (6)

Country Link
US (1) US5545015A (de)
EP (1) EP0628723B1 (de)
JP (1) JPH06346837A (de)
CA (1) CA2123823A1 (de)
DE (1) DE69401033T2 (de)
FR (1) FR2706540B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539095B1 (en) 1993-11-18 2003-03-25 Geoffrey B. Rhoads Audio watermarking to convey auxiliary control information, and media embodying same

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5884488A (en) * 1997-11-07 1999-03-23 Westport Research Inc. High pressure fuel supply system for natural gas vehicles
US6659730B2 (en) * 1997-11-07 2003-12-09 Westport Research Inc. High pressure pump system for supplying a cryogenic fluid from a storage tank
SE521393C2 (sv) * 1998-02-25 2003-10-28 Itt Mfg Enterprises Inc Tätningsanordning
FR2782544B1 (fr) * 1998-08-19 2005-07-08 Air Liquide Pompe pour un liquide cryogenique ainsi que groupe de pompage et colonne de distillation equipes d'une telle pompe
DE19915847A1 (de) * 1999-04-08 2000-10-12 Linde Tech Gase Gmbh Pumpensystem zum Fördern von kryogenen Flüssigkeiten
US6663350B2 (en) 2001-11-26 2003-12-16 Lewis Tyree, Jr. Self generating lift cryogenic pump for mobile LNG fuel supply system
CA2362881C (en) * 2001-11-30 2004-01-27 Westport Research Inc. Method and apparatus for delivering pressurized gas
CA2454458C (en) * 2003-12-24 2006-02-14 Westport Research Inc. Apparatus and method for holding a cryogenic fluid and removing same therefrom with reduced heat leak
US7472551B2 (en) * 2005-11-16 2009-01-06 Praxair Technology, Inc. Cryogenic process system with extended bonnet filter
EP2795639A4 (de) * 2011-12-08 2016-01-06 Teco Westinghouse Motor Co Vorrichtungen, systeme und verfahren für supraleitende magnetpatronen in einem remanenten feld
GB2509087A (en) * 2012-12-19 2014-06-25 Siemens Plc Sealed rotary drive arrangement, providing drive into a high-pressure gas vessel
US9956024B2 (en) 2014-07-11 2018-05-01 Medtronic Cryocath Lp Cryoablation method and system
US10006449B2 (en) 2015-01-14 2018-06-26 Caterpillar Inc. Bearing arrangement for cryogenic pump
US9828987B2 (en) * 2015-01-30 2017-11-28 Caterpillar Inc. System and method for priming a pump
US9810163B2 (en) * 2015-06-29 2017-11-07 Caterpillar Inc. Multiple element firing strategy for cryogenic pump
US10024311B2 (en) * 2015-08-06 2018-07-17 Caterpillar Inc. Cryogenic pump for liquefied natural gas
JP6781795B2 (ja) * 2019-04-09 2020-11-04 株式会社Ｉｈｉ回転機械エンジニアリング 往復動圧縮機
FR3123953B1 (fr) * 2021-06-14 2024-05-10 Air Liquide Installation de pompage de fluide cryogénique et station de remplissage comprenant une telle installation.
FR3123952B1 (fr) * 2021-06-14 2024-03-08 Air Liquide Installation de pompage de fluide cryogénique et station de remplissage comprenant une telle installation.

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE356700A (de) * 1927-12-20 1900-01-01
US2018144A (en) * 1933-04-29 1935-10-22 Linde Air Prod Co Method and apparatus for transferring gas material
FR1464689A (fr) * 1965-10-11 1967-01-06 Radiotechnique Perfectionnements aux pompes pour gaz liquéfiés
US3435629A (en) * 1967-04-13 1969-04-01 Schlumberger Technology Corp Borehole logging technique
US3973868A (en) * 1974-09-20 1976-08-10 Fairchild Industries Inc. Suction valve for submerged pumping system
US4080106A (en) * 1976-01-12 1978-03-21 International Telephone And Telegraph Corporation Purged valve assembly and method of sealing
DE2707042B1 (de) * 1977-02-18 1977-12-08 Rheinhuette Vorm Beck & Co Fluessiggaspumpenanlage
DE3126293C2 (de) * 1981-07-03 1983-12-15 Kernforschungsanlage Jülich GmbH, 5170 Jülich Pumpvorrichtung für sehr kalte Flüssigkeiten
US4472946A (en) * 1983-01-28 1984-09-25 Zwick Eugene B Cryogenic storage tank with built-in pump
DE3621727A1 (de) * 1986-06-28 1988-01-14 Deutsche Forsch Luft Raumfahrt Kolbenpumpe fuer kryogene fluessigkeiten
CH672354A5 (de) * 1987-05-19 1989-11-15 Cryopump Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6539095B1 (en) 1993-11-18 2003-03-25 Geoffrey B. Rhoads Audio watermarking to convey auxiliary control information, and media embodying same

Also Published As

Publication number Publication date
FR2706540B1 (fr) 1995-09-01
DE69401033D1 (de) 1997-01-16
FR2706540A1 (fr) 1994-12-23
JPH06346837A (ja) 1994-12-20
EP0628723A1 (de) 1994-12-14
CA2123823A1 (en) 1994-12-12
US5545015A (en) 1996-08-13
DE69401033T2 (de) 1997-05-28

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