EP2514933B1 - Séparation du côté haute pression de lubrifiant liquide pour la lubrification de machines d'expansion fonctionnant de manière volumétrique - Google Patents

Séparation du côté haute pression de lubrifiant liquide pour la lubrification de machines d'expansion fonctionnant de manière volumétrique Download PDF

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Publication number
EP2514933B1
EP2514933B1 EP11003288.5A EP11003288A EP2514933B1 EP 2514933 B1 EP2514933 B1 EP 2514933B1 EP 11003288 A EP11003288 A EP 11003288A EP 2514933 B1 EP2514933 B1 EP 2514933B1
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EP
European Patent Office
Prior art keywords
lubricant
working medium
expansion machine
separator
working
Prior art date
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Application number
EP11003288.5A
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German (de)
English (en)
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EP2514933A1 (fr
Inventor
Richard Aumann
Andreas Schuster
Andreas Sichert
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Orcan Energy AG
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Orcan Energy AG
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Publication date
Application filed by Orcan Energy AG filed Critical Orcan Energy AG
Priority to EP11003288.5A priority Critical patent/EP2514933B1/fr
Priority to CN201280019104.6A priority patent/CN103547772B/zh
Priority to US14/008,058 priority patent/US10024196B2/en
Priority to PCT/EP2012/001596 priority patent/WO2012143104A1/fr
Publication of EP2514933A1 publication Critical patent/EP2514933A1/fr
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Publication of EP2514933B1 publication Critical patent/EP2514933B1/fr
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K13/00—General layout or general methods of operation of complete plants
    • F01K13/006—Auxiliaries or details not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/04—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/06—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using mixtures of different fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
    • F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
    • F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
    • F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
    • F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F01C1/16—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C1/00—Rotary-piston machines or engines
    • F01C1/30—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F01C1/34—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members
    • F01C1/344—Rotary-piston machines or engines having the characteristics covered by two or more groups F01C1/02, F01C1/08, F01C1/22, F01C1/24 or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F01C1/08 or F01C1/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member

Definitions

  • the present invention relates to volumetric expansion machines, and more particularly to methods and apparatus for lubricating the same.
  • ORC Organic Rankine Cycle
  • the working medium is brought to operating pressure by a feed pump, and it is supplied to it in an evaporator energy in the form of heat, which is provided by a combustion or a waste heat flow available.
  • the working fluid flows via a pressure tube to an expansion machine in which it is expanded to a lower pressure.
  • the expanded working medium vapor flows through a condenser, in which a heat exchange between the vaporous working medium and a cooling medium takes place, after which the condensed working medium is returned by a feed pump to the evaporator in a cyclic process.
  • volumetric expansion machines also referred to as positive displacement expansion machines, which include a working chamber and perform work during an increase in volume of that working chamber during expansion of the working medium.
  • expansion machines are realized, for example, in the form of piston expansion machines, screw expansion machines or scroller expander.
  • volumetric expansion machines are particularly used in small power class ORC systems (e.g., 1 to 500kW of electrical power).
  • ORC systems e.g., 1 to 500kW of electrical power.
  • volumetric expansion machines require lubrication by a lubricant in particular the piston or the mutually rolling profiles (flanks) of the expansion space and the bearings and the sliding walls of the working chamber. So it requires a lubrication of the bearings and the touching flanks.
  • a lubricant advantageously also results in a sealing of the working space of the expansion machine, whereby less steam is lost through overflow within the expansion machine and thus the efficiency is increased.
  • Lubrication with oil is advantageous, with oil and live steam passing through the expansion machine together, which necessitates a subsequent separation of oil and steam.
  • the lubrication can be easily realized. It gives here a soluble oil to the working medium.
  • the oil is present as finely divided droplets in the compressed vapor.
  • the high-pressure steam-oil spray is now passed through an oil separator, where oil is separated by a cyclone and the refrigerant leaves the oil separator in the direction of the vapor in the direction of the condenser.
  • the oil is now at high pressure and can be injected directly into the inlet area of the compression machine and directed to the bearings.
  • the oil is entrained with the low-pressure steam, brought to high pressure together with the steam and can then be separated again in the oil separator.
  • FIG. 1 illustrates a schematic diagram of such a lubrication system of the prior art.
  • a working medium is supplied from an evaporator 1 to an expansion machine 2.
  • the vaporous working medium is expanded and it is converted by a generator 3, the energy released into electrical energy.
  • a lubricant for example, a lubricating oil supplied.
  • the lubricant is used in the expansion machine of the bearing lubrication L and the flank lubrication F.
  • the lubricant leaves together with the relaxed working medium, the expansion machine 2.
  • the lubricant is in the form of a finely divided oil mist in the relaxed working medium and is separated in an oil separator 5 from the working fluid, so that this is supplied substantially oil-free from the oil separator 5 to a condenser 6.
  • the condensed working medium is supplied by a feed pump 7 to the evaporator 1 again.
  • the recovered oil is supplied via the oil circuit pump 4 of the expansion machine 2 again.
  • the lubrication system of the prior art has the following disadvantages. Since the lubricant (lubricating oil) is separated on the low pressure side after passing through the expansion machine 2, it is necessary to provide the oil circuit pump 4 which, since the lubricant is to be supplied to the high pressure side of the expansion machine 2, the same pressure difference as the feed pump 7 transporting the working medium has overcome, resulting in a high equipment cost with corresponding costs. In addition, a relatively large oil separator 5 is required, since the exhaust steam leaving the expansion machine 2 has a lower density, for example more than an order of magnitude lower density, compared with the expansion machine 2 which is supplied with fresh steam. This results in a large cost of materials with correspondingly high costs.
  • the cycle apparatus comprises the expansion machine, a feed pump, a lubricant separator and a working medium with a lubricant.
  • the method comprises the following steps.
  • the working medium is pressurized by means of the feed pump.
  • the pressurized working fluid is supplied by the feed pump to the lubricant separator. At least part of the lubricant is separated from the working medium with the lubricant separator. At least part of the deposited lubricant is supplied from the lubricant separator to the expansion machine.
  • the lubricant is separated from the working medium pressurized by the feed pump. In the prior art, however, this deposition is done from the expansion medium immediately leaving the working medium.
  • the provision of an oil circuit pump is unnecessary in the method according to the invention, since the deposited lubricant is present at a high pressure level.
  • the lubricant separator can be made smaller in comparison with the prior art, since the separation of the lubricant from the liquid takes place with high density instead of the exhaust steam.
  • the live steam temperature / enthalpy is not lowered undesirably by adding a relatively cold lubricant since the deposited lubricant is preferably used for lubricating the bearing of the expansion machine.
  • the suitable low temperature of the expansion machine supplied by the lubricant separator lubricant which causes an advantageous storage cooling and, secondly, the rapid startup of the thermodynamic cycle device due to the comparison with the prior art lower liquid inventory.
  • the cycle apparatus further comprises a condenser and an evaporator
  • the method according to the invention further comprises supplying the working medium from the expansion machine to the condenser, liquefying the working medium with the condenser, supplying the liquefied working medium from the condenser to the feed pump, Supplying the lubricant-depleted working medium from the lubricant separator to the evaporator, evaporating the lubricant-depleted working medium in the evaporator, and supplying the evaporated working medium to the expansion machine.
  • a portion of the lubricant remaining in the expansion machine supplied to the expansion lubricant serves to lubricate successive or sliding parts of the working chamber of the volumetric expansion machine ( edge lubrication).
  • edge lubrication the remaining portion of the lubricant has the appropriate temperature.
  • the remaining lubricant is heated in the evaporator together with the working medium and thereby does not reduce the energy content of the expansion steam supplied live steam.
  • the cycle apparatus may further comprise a food container
  • the step of supplying the liquefied working medium from the condenser to the feed pump may comprise the substeps of (i) supplying the liquefied working medium from the condenser to the food container and (ii) supplying the working medium from the food container to the feed pump.
  • a development of the last-mentioned further development comprises supplying the working medium from the food container to the feed pump simultaneous suction a low-lubricant and a lubricant-rich phase of the working medium from the food container or mixing a low-lubricant and a lubricant-rich phase of the working medium in the food container.
  • the working medium liquefied by the condenser is in the form of a suspension of working fluid and lubricant, in particular no or only a slight solution of lubricant in the working fluid takes place.
  • a minor solution is a solution of less than 15%, preferably less than 10%, most preferably less than 5% of lubricant in the working fluid. In this way, the lubricant in the lubricant separator can be well separated from the working fluid.
  • the separated lubricant can preferably flow to lubrication points of the expansion machine, in particular to a bearing of the expansion machine; wherein preferably a control of a volume flow of the lubricant to the expansion machine takes place.
  • a regulation of the volume flow can take place by means of a control valve in a line between the lubricant separator and the expansion machine.
  • a flow velocity of the working medium in the lubricant separator is reduced. This favors the phase separation of lubricant and working fluid.
  • the process according to the invention can advantageously be used for lubricating a volumetric expansion machine of an Organic Rankine Cycle (ORC) plant.
  • the working medium can be provided in the form of an organic working fluid. Fluorinated hydrocarbons can serve as a working medium, for example.
  • the working fluid is typically supplied substantially in vapor form from the evaporator to the expansion machine, the depleted working fluid may contain a proportion of lubricant in the liquid state, for example in the form of oil droplets entrained with the working fluid vapor.
  • the lubricant in the form of oil droplets may, for example, be a refrigerant oil which, in combination with a working fluid, has a miscibility gap (see also detailed description below).
  • Suitable refrigerant oils are produced, for example, based on polyalphaolefin (PAO, base fluid for lubricants, eg Rensio Synth 68 from Fuchs Europe Schmierstoffe GmbH) or alkylbenzene base (eg Rensio SP 220 from Fuchs Europe Schmierstoffe GmbH).
  • PAO polyalphaolefin
  • base fluid for lubricants eg Rensio Synth 68 from Fuchs Europe Schmierstoffe GmbH
  • alkylbenzene base eg Rensio SP 220 from Fuchs Europe Schmierstoffe GmbH
  • thermodynamic cycle device includes: a working fluid having a working fluid and a lubricant, an expansion engine, a feed pump for pressurizing the working fluid, and a lubricant separator for separating at least a portion of the lubricant from the working fluid, the cyclic processing device configured to include at least a portion of the deposited lubricant from the lubricant separator to the expansion machine.
  • thermodynamic cycle apparatus of the present invention may further comprise: a condenser for liquefying the working medium, and an evaporator for vaporizing the depleted working medium, the cycle apparatus being adapted to supply the working medium from the expander to the condenser, the depleted working medium of to deliver the lubricant separator to the evaporator, and to deliver the vaporized working fluid to the expansion machine.
  • the cycle apparatus may further comprise a food container, wherein the cycle processor is adapted to supply the liquefied working medium from the condenser to the food container and to supply the working fluid from the food container to the feed pump.
  • a suction device may be provided for aspirating at least one floating, lubricant-rich phase of the working medium in the food container or it may be provided a suction device for simultaneous extraction of a low-lubricant and a lubricant-rich phase of the working medium from the food container or it may be a mixing device for mixing a low-lubricant and a lubricant-rich phase of the working medium may be provided in the food container.
  • the cycle processing apparatus may be an organic Rankine cycle apparatus using an organic working medium
  • the expansion machine may be selected from the group consisting of a piston expansion machine, screw expansion machine, a scroll expander, a vane machine, and a root expander.
  • the lubricant separator can furthermore be designed to supply at least a portion of the deposited lubricant to the lubrication points corresponding to the expansion machine, such as bearings of the expansion machine to be lubricated.
  • a pipeline can be provided, in which the lubricant deposited in the lubricant separator is led to lubrication points of the expansion machine, in particular to a bearing of the expansion machine; and wherein the pipeline may preferably have a control valve for controlling the volume flow of the lubricant.
  • a steam power plant for example a geothermal steam power plant or a biomass combustion steam power plant, is provided which comprises the apparatus according to one of the above examples.
  • a lubrication system for a volumetric expansion machine in a thermodynamic cycle apparatus includes a lubricant separator (hereinafter exemplified by an oil separator) 10 that is cyclically disposed between a feed pump 50 and an evaporator 20.
  • the evaporator 20 produces a fully or partially vaporized working medium (live steam), which is supplied to an expansion machine 30, which is driven by the working medium and in cooperation with a generator 40, the production of electrical energy.
  • the working medium leaves the expansion machine 30 as a lubricant-working fluid spray and flows to the condenser 60.
  • a liquefaction of the working medium takes place, with no or only a slight solution of the lubricant should take place in the working fluid.
  • the liquefied working medium is preferably collected in a food container 70.
  • the feed pump 50 sucks the liquid working medium from the feed container 70, increases its pressure and conveys it into the lubricant separator 10.
  • the suspension of lubricant and working fluid is brought to live steam pressure.
  • the working fluid consists of the actual working fluid and a lubricant.
  • the separated lubricant is supplied directly from the lubricant separator 10, ie without any further pump, to the bearing of the expansion machine 30 for its lubrication and cooling.
  • the depleted of lubricant working fluid is then returned to the evaporator 20, and the cycle closes.
  • the different density of working fluid and lubricant is preferably utilized. Fittings in the lubricant separator 10 and a widening of the cross section and a concomitant reduction in the flow rate favor the phase separation.
  • the lubricant in the upper region of the lubricant separator 10 can be diverted. Since the derived lubricant is present at a high pressure level, it can be passed directly, for example via a pipeline to bearings of the expansion machine 30.
  • a part of the lubricant passes through the lubricant separator 10 and is conducted together with the working fluid to the evaporator 20. Again, the lubricant leaves the evaporator 20 liquid, but at live steam temperature. The finely divided lubricant present in the steam ensures reliable flank lubrication in the expansion machine 30.
  • Another advantage is that compared to the prior art, a smaller volume per time flows through the oil separator 10, so that it can be made relatively compact, resulting in a space savings and cost savings. Further, the pressure loss after the expansion machine 30 is reduced and thus the pressure drop across the expansion machine 30 can be increased as compared with the conventional configuration with an oil separator 10 downstream of the expansion machine 30, so that the efficiency of the expansion machine 30 can be increased.
  • a working medium which has a sufficiently large miscibility gap. This means that an oil-poor liquid phase and an oil-rich liquid phase are formed. If you go for example from a pure refrigerant and adds oil, this can be solved depending on the temperature up to a certain percentage in the working fluid. If the oil concentration is increased further, a two-phase mixture is formed which consists of an oil-poor and an oil-rich liquid phase. If you continue to add oil, then finally forms a uniform oil-rich phase.
  • the working fluid may be provided in the form of a fluorinated hydrocarbon, eg R134a, R245fa, and the lubricant in the form of a refrigerant oil.
  • Suitable refrigerant oils are produced, for example, based on polyalphaolefin (PAO, base fluid for lubricants, eg Rensio Synth 68 from Fuchs Europe Schmierstoffe GmbH) or alkylbenzene base (eg Rensio SP 220 from Fuchs Europe Schmierstoffe GmbH).
  • PAO polyalphaolefin
  • the lubricating oil will have a significantly higher boiling temperature than the working fluid, so that after passing through the Evaporator 20 is liquid in droplet form in the working steam of the working medium.
  • the food container can be extended by a suction 71, which may be, for example, a suction lance, as in FIG. 4 is shown.
  • the suction lance has, for example, one or more upper and one or more lower holes, with which the ratio of the volume flows of oil-rich and low-oil phase can be defined.
  • At the inlet openings of the suction lance exactly sets the flow rate, with the pressure losses are compensated in the intake lance. Due to the diameter of the holes and their number and arrangement, the ratio of the intake volume flows can be adjusted.
  • the two phases mix and are separated again in the lubricant separator.
  • the exemplified solid suction lance 71 in the presence of two phases, these are sucked in at a volume ratio that is set.
  • the suction device can be structurally represented in other ways. It can be sucked by a float in a mobile structure in the presence of two phases, at least the top-floating phase. It can be sucked by a switchable valve in the presence of two phases, at least the top of floating phase. It can by a Mixing wheel driven by the volume flow, the two phases are mixed, so that in the presence of two phases are sucked mixed. It can be mixed by a motor-driven mixing wheel, the two phases, so that in the presence of two phases are sucked mixed.
  • the invention relates to an apparatus and a method for separating lubricant from the liquid working medium.
  • a working oil-pairing is used, in which the oil and the working fluid dissolve only slightly. Therefore, in a lubricant separator, the oil for bearing lubrication and cooling can be discharged in an expansion machine. Since segregation can occur in the food container, it must be ensured by means of a device that in this case both phases are sucked in, which is e.g. can be realized by a suction lance.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubricants (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Claims (13)

  1. Procédé de lubrification d'une machine de détente dans un dispositif à cycle thermodynamique, le dispositif à cycle thermodynamique comprenant la machine de détente (30), une pompe d'alimentation (50), un séparateur de lubrifiant (10), un évaporateur (20), un condenseur (60) et un fluide de travail avec un agent de travail et un lubrifiant, et le procédé comprenant les étapes suivantes :
    la mise en pression du fluide de travail à l'aide de la pompe d'alimentation (50) ;
    la fourniture du fluide de travail sous pression de la pompe d'alimentation (50) au séparateur de lubrifiant (10) ;
    la séparation de lubrifiant du fluide de travail à l'aide du séparateur de lubrifiant (10) ;
    la fourniture d'au moins une partie du lubrifiant ayant été séparé, du séparateur de lubrifiant (10) à la machine de détente (30) ;
    la fourniture du fluide de travail appauvri en lubrifiant du séparateur de lubrifiant (10) à l'évaporateur (20) ;
    la vaporisation du fluide de travail appauvri en lubrifiant, dans l'évaporateur (20) ;
    la fourniture du fluide de travail évaporé à la machine de détente (30) ;
    la fourniture du fluide de travail de la machine de détente (30) au condenseur (60) ;
    la liquéfaction du fluide de travail avec le condenseur (60) ; et
    la fourniture du fluide de travail liquéfié du condenseur (60) à la pompe d'alimentation (50) ;
    caractérisé
    en ce qu'à l'aide du séparateur de lubrifiant (10), seule une partie du lubrifiant est séparée du fluide de travail, de sorte que le lubrifiant résiduel du fluide de travail appauvri, assure la lubrification de pièces de la chambre de travail de la machine de détente (30), qui roulent ou glissent les unes sur les autres.
  2. Le procédé selon la revendication 1, d'après lequel le dispositif à cycle comprend, en outre, un réservoir d'alimentation (70), et d'après lequel l'étape de la fourniture du fluide de travail liquéfié du condenseur (60) à la pompe d'alimentation (50) comprend les étapes partielles (i) de la fourniture du fluide de travail liquéfié du condenseur (60) au réservoir d'alimentation (70), et (ii) de la fourniture du fluide de travail du réservoir d'alimentation (70) à la pompe d'alimentation (50).
  3. Le procédé selon la revendication 2, d'après lequel la fourniture du fluide de travail du réservoir d'alimentation (70) à la pompe d'alimentation (50) comprend l'aspiration simultanée d'une phase pauvre en lubrifiant ou d'une phase riche en lubrifiant du fluide de travail du réservoir d'alimentation (70), ou bien un mélange d'une phase pauvre en lubrifiant et d'une phase riche en lubrifiant du fluide de travail dans le réservoir d'alimentation (70).
  4. Le procédé selon l'une des revendications précédentes, d'après lequel le fluide de travail liquéfié par le condenseur (60) se présente sous la forme d'une suspension constituée d'agent de travail et de lubrifiant, et notamment d'après lequel n'a lieu aucune ou a lieu seulement une très légère dissolution de moins de 15%, de préférence de moins de 10%, et de manière particulièrement préférée de moins 5% du lubrifiant dans le fluide de travail.
  5. Le procédé selon l'une des revendications précédentes, d'après lequel le lubrifiant séparé, en raison de la mise en pression, s'écoule notamment directement et/ou sans être pompé, vers des zones à lubrifier de la machine de détente (30), notamment un palier de la machine de détente (30), et d'après lequel on effectue de préférence une régulation du débit volumique du lubrifiant vers la machine de détente (30).
  6. Le procédé selon l'une des revendications précédentes, comprenant l'étape supplémentaire suivante : la réduction d'une vitesse d'écoulement du fluide de travail dans le séparateur de lubrifiant (10).
  7. Le procédé selon l'une des revendications précédentes, d'après lequel l'agent de travail est fourni sous la forme d'un agent de travail organique, l'agent de travail comprenant en particulier un hydrocarbure fluoré ou étant constitué de celui-ci et/ou le lubrifiant comprenant en particulier une huile frigorigène ou étant constitué de celle-ci.
  8. Dispositif à cycle thermodynamique comprenant :
    une pompe d'alimentation (50), qui est configurée pour mettre en pression un fluide de travail ;
    un séparateur de lubrifiant (10), qui est configuré pour séparer du fluide de travail, un lubrifiant contenu dans le fluide de travail ;
    un évaporateur (20), qui est configuré pour assurer la vaporisation du fluide de travail appauvri en lubrifiant ;
    une machine de détente (30) ; et
    un condenseur (60), qui est configuré pour liquéfier le fluide de travail ;
    le dispositif à cycle étant configuré pour :
    fournir au moins une partie du lubrifiant ayant été séparé, du séparateur de lubrifiant (10) à la machine de détente (30) ;
    fournir le fluide de travail appauvri en lubrifiant du séparateur de lubrifiant (10) à l'évaporateur (20) ;
    fournir le fluide de travail appauvri en lubrifiant de l'évaporateur (20) à la machine de détente (30) ; et
    fournir le fluide de travail de la machine de détente (30) au condenseur (60) ;
    caractérisé en ce que
    le séparateur de lubrifiant (10) est configuré pour ne séparer qu'une partie du lubrifiant du fluide de travail de manière à ce que dans le fluide de travail fourni à l'évaporateur (20) après la séparation de ladite une partie du lubrifiant, il reste une quantité résiduelle de lubrifiant, de sorte qu'il est possible d'obtenir une lubrification de pièces de la chambre de travail de la machine de détente (30), qui roulent ou glissent les unes sur les autres.
  9. Le dispositif à cycle selon la revendication 8, dans lequel le dispositif à cycle comprend en outre un réservoir d'alimentation (70), et dans lequel le dispositif à cycle est configuré pour fournir le fluide de travail liquéfié du condenseur (60) au réservoir d'alimentation (70), et pour fournir le fluide de travail du réservoir d'alimentation (70) à la pompe d'alimentation (50).
  10. Le dispositif à cycle selon la revendication 9, dans lequel il est prévu un dispositif d'aspiration pour aspirer au moins une partie d'une phase plus riche en lubrifiant du fluide de travail surnageant sur le haut dans le réservoir d'alimentation (70), ou bien dans lequel il est prévu un dispositif d'aspiration (71), notamment une lance d'aspiration avec une pluralité de perçages, qui sont agencés de manière à pouvoir aspirer simultanément la phase riche en lubrifiant surnageant sur le dessus et une phase pauvre en lubrifiant située en-dessous du fluide de travail du réservoir d'alimentation (70), ou bien dans lequel il est prévu un dispositif de mélange destiné à mélanger une phase pauvre en lubrifiant et une phase riche en lubrifiant du fluide de travail dans le réservoir d'alimentation (70).
  11. Le dispositif à cycle selon l'une des revendications 8 à 10, dans lequel le dispositif à cycle est un dispositif à cycle de Rankine organique, et/ou dans lequel la machine de détente (30) est choisie parmi celle du groupe constitué d'une machine de détente à pistons, d'une machine de détente à vis, d'une unité de détente à élément en spirale dite unité Scroll, d'une machine à cellules semi-rotatives et d'une unité de détente à lobes dite de Roots.
  12. Le dispositif à cycle selon l'une des revendications 8 à 11, comprenant, en outre, une conduite tubulaire dans laquelle le lubrifiant ayant été séparé dans le séparateur de lubrifiant (10), est acheminé vers des zones de lubrification de la machine de détente (30), notamment vers un palier de la machine de détente (30), et la conduite tubulaire présentant de préférence une vanne de régulation pour la régulation du débit volumique du lubrifiant.
  13. Centrale à vapeur qui comprend le dispositif selon l'une des revendications 8 à 12.
EP11003288.5A 2011-04-19 2011-04-19 Séparation du côté haute pression de lubrifiant liquide pour la lubrification de machines d'expansion fonctionnant de manière volumétrique Active EP2514933B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP11003288.5A EP2514933B1 (fr) 2011-04-19 2011-04-19 Séparation du côté haute pression de lubrifiant liquide pour la lubrification de machines d'expansion fonctionnant de manière volumétrique
CN201280019104.6A CN103547772B (zh) 2011-04-19 2012-04-12 用于润滑测定体积地工作的膨胀机的流体润滑材料的高压侧分离的方法及装置
US14/008,058 US10024196B2 (en) 2011-04-19 2012-04-12 High-pressure side separation of liquid lubricant for lubricating volumetrically working expansion machines
PCT/EP2012/001596 WO2012143104A1 (fr) 2011-04-19 2012-04-12 Séparation, côté haute pression, d'un lubrifiant liquide destiné à la lubrification de machines à détente volumétriques

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11003288.5A EP2514933B1 (fr) 2011-04-19 2011-04-19 Séparation du côté haute pression de lubrifiant liquide pour la lubrification de machines d'expansion fonctionnant de manière volumétrique

Publications (2)

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EP2514933A1 EP2514933A1 (fr) 2012-10-24
EP2514933B1 true EP2514933B1 (fr) 2017-03-15

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US (1) US10024196B2 (fr)
EP (1) EP2514933B1 (fr)
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EP2520771B1 (fr) * 2011-05-03 2016-08-10 Orcan Energy AG Procédé et dispositif de chauffage rapide de lubrifiant pour machines d'expansion lubrifiées
JP5715111B2 (ja) 2012-12-12 2015-05-07 株式会社神戸製鋼所 発電装置及び発電システム
US9752485B2 (en) * 2013-01-03 2017-09-05 Eaton Corporation Exhaust gas energy recovery system
EP3032048A1 (fr) * 2014-12-09 2016-06-15 Eaton Corporation Système à cycle de rankine organique avec circuit de lubrification
FR3029561B1 (fr) * 2014-12-09 2016-12-23 Exoes Machine de detente a pistons
CN105673108A (zh) * 2016-04-01 2016-06-15 上海开山能源装备有限公司 喷油orc膨胀机系统
CN105673106A (zh) * 2016-04-01 2016-06-15 上海开山能源装备有限公司 带组合冷凝器的有机朗肯循环膨胀机系统
CN105673105A (zh) * 2016-04-01 2016-06-15 上海开山能源装备有限公司 带组合工质输送机构的有机朗肯循环膨胀机系统
JP6815911B2 (ja) * 2017-03-22 2021-01-20 株式会社神戸製鋼所 熱エネルギー回収装置
JP6763848B2 (ja) * 2017-12-04 2020-09-30 株式会社神戸製鋼所 熱エネルギー回収装置
CN111535889B (zh) * 2020-05-07 2021-01-05 江苏科瑞德智控自动化科技有限公司 一种低品质余热高效利用系统

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Publication number Publication date
US10024196B2 (en) 2018-07-17
WO2012143104A1 (fr) 2012-10-26
US20160290172A1 (en) 2016-10-06
EP2514933A1 (fr) 2012-10-24
CN103547772A (zh) 2014-01-29
CN103547772B (zh) 2016-03-16

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