EP2746543A1 - Lubrification de machines d'expansion - Google Patents

Lubrification de machines d'expansion Download PDF

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Publication number
EP2746543A1
EP2746543A1 EP12198869.5A EP12198869A EP2746543A1 EP 2746543 A1 EP2746543 A1 EP 2746543A1 EP 12198869 A EP12198869 A EP 12198869A EP 2746543 A1 EP2746543 A1 EP 2746543A1
Authority
EP
European Patent Office
Prior art keywords
working medium
expansion machine
stage
lubricant
bearings
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.)
Granted
Application number
EP12198869.5A
Other languages
German (de)
English (en)
Other versions
EP2746543B1 (fr
Inventor
Andreas Grill
Jens-Patrick Springer
Gabor Ast
Andreas Sichert
Richard Aumann
Andreas Schuster
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.)
Orcan Energy AG
Original Assignee
Orcan Energy AG
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 Orcan Energy AG filed Critical Orcan Energy AG
Priority to EP12198869.5A priority Critical patent/EP2746543B1/fr
Priority to US14/653,242 priority patent/US10100682B2/en
Priority to CN201380066562.XA priority patent/CN105102770B/zh
Priority to PCT/EP2013/075310 priority patent/WO2014095333A2/fr
Publication of EP2746543A1 publication Critical patent/EP2746543A1/fr
Application granted granted Critical
Publication of EP2746543B1 publication Critical patent/EP2746543B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F01K17/04—Using steam or condensate extracted or exhausted from steam engine plant for specific purposes other than heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M7/00—Lubrication means specially adapted for machine or engine running-in
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D11/00—Feed-water supply not provided for in other main groups
    • F22D11/02—Arrangements of feed-water pumps
    • 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
    • F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/34—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating
    • F01K7/36—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating the engines being of extraction or non-condensing type; Use of steam for feed-water heating the engines being of positive-displacement type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/023—Piston pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238—Rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
    • F22B1/16—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
    • F22B1/167—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour using an organic fluid

Definitions

  • the present invention relates to a thermodynamic cycle apparatus comprising a working medium with a lubricant additive and an expansion machine for converting enthalpy in the working medium into mechanical energy.
  • ORC Organic Rankine Cycle
  • the working medium is brought to a working 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, a waste heat stream or other heat source 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 pressurized by the feed pump and returned to the evaporator in a cyclic process.
  • volumetric expansion machines also called positive displacement expansion machines be referred to, include one or more working chamber (s) and perform during an increase in volume of this working chamber (s) during the relaxation of the working medium work.
  • These expansion machines are realized, for example, in the form of piston expansion machines, screw expansion machines or scroller expander.
  • Such volumetric expansion machines are used in particular in ORC systems of small power class (eg 1 to 500 kW electrical power).
  • ORC systems of small power class (eg 1 to 500 kW 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.
  • the lubrication of the high-pressure side and the low-pressure side bearings is accomplished via a respective lubricant supply.
  • the lubricant is directed to the bearings, passes through the bearing and leaves the bearing via a connection to the low pressure side and enters the exhaust steam path. There, the liquid oil mixes with the exhaust steam and is transported to the condenser.
  • Both bearings are approximately at the same pressure level, since the two bearings are connected to each other via a bore / pipe.
  • the pressure level at the bearings is on the order of the pressure at the outlet of the expansion machine.
  • thermodynamic cycle device with a working fluid with a lubricant additive; an expansion machine for converting enthalpy in the working medium into mechanical energy; a multi-stage pressure increasing device (for example, a feed pump) for stepwise pressurizing the working medium; means for branching off a portion of the working fluid between two stages of the multi-stage pressure booster; and means for supplying the diverted portion of the working medium to one or more bearing points of the expansion machine.
  • the tapping of the multi-stage pressure booster for diverting a portion of the working medium has the advantage that the working medium with the lubricant is diverted directly from the multi-stage pressure booster at a suitable pressure level.
  • thermodynamic size of the enthalpy of the working medium includes, as usual, the internal thermal energy and the volume work to be done ("pressure energy").
  • the multi-stage pressure booster may comprise a multi-stage pump, in particular a multistage centrifugal pump, or several directly sequential pumps.
  • a multi-stage pump in particular a multistage centrifugal pump, or several directly sequential pumps.
  • these may be based on different functional principles, for example as a piston pump, centrifugal pump, screw pumps, etc.
  • the pressure booster stages may also have the same functional principle and are then preferably housed in a housing ("a pump").
  • thermodynamic cycle apparatus A development of the thermodynamic cycle apparatus is that the means for branching off a part of the working medium may comprise a branch, in particular a bore, between two stages of the multi-stage pump or a branch between two pumps. This represents a simple practical realization of the means for branching.
  • the means for supplying the diverted portion of the working medium to one or more bearings of the expansion machine may comprise one or more conduits.
  • thermodynamic cycle device in the case of a multi-stage pump with two or more impellers, the means for branching off a part of the working medium in the conveying direction of the pump can be arranged between two directly adjacent impellers.
  • the gradual increase in pressure of the working fluid can be exploited by means of the wheels and a part of the working medium (mixture of a working fluid and the lubricant) are branched off at a suitable location.
  • thermodynamic cycle apparatus may further comprise means for discharging the working medium with the lubricant additive from the one or more bearings, wherein the means for discharging the working medium may in particular be in fluid communication with an outlet of the expansion machine.
  • the cycle device may be an organic Rankine cycle device and / or 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 working medium may be provided in the form of an organic working medium, wherein the working medium may comprise or consist in particular of a fluorinated working medium such as fluorinated hydrocarbons, fluorinated carbons, fluoro ethers or fluoroketones, and / or the lubricant in particular Include or may consist of refrigerant oil, and / or wherein the lubricant content of the working medium can be between 0.1% and 10% by weight.
  • a fluorinated working medium such as fluorinated hydrocarbons, fluorinated carbons, fluoro ethers or fluoroketones
  • the lubricant in particular Include or may consist of refrigerant oil, and / or wherein the lubricant content of the working medium can be between 0.1% and 10% by weight.
  • thermodynamic cycle device can be part of a steam power plant.
  • thermodynamic cycle apparatus comprising the expansion machine, a multi-stage pressure booster and a working medium with a lubricant additive
  • the method comprising the steps of: stepwise pressurizing the working medium with the multi-stage pressure booster device; Diverting a portion of the working fluid between two stages of the multi-stage pressure booster; and supplying the diverted portion of the working medium to at least one or more bearing points of the expansion machine for lubricating the bearings.
  • FIG. 1 exemplifies a lubrication system for an expansion machine according to the present invention.
  • the working fluid will be diverted directly from the multi-stage feed pump at a suitable pressure level.
  • the solution of the invention combines the function of a condensate pump and the feed pump advantageously in a housing and allows the removal of liquid at a suitable location, said location (number of already passed stages) determines the pressure level of the liquid withdrawn.
  • a special feature of these pumps can be used.
  • the pressure increase in the multi-stage pumps takes place by a juxtaposition of a plurality of impellers, so that per stage a pressure increase of e.g. 1 bar takes place.
  • the wheels are mounted on a shaft in a housing and each have the same diameter. Towards the shaft, an increase in pressure is observed in stages. Through a tap at a suitable point can now liquid, in the present case lubricant working fluid solution, are removed at the pressure level, which already has the appropriate pressure level. So it must be made no further increase in pressure of this fluid.
  • FIG. 1 shows a schematic diagram of a thermodynamic cycle device according to the present invention.
  • the thermodynamic cycle apparatus includes a multi-stage multi-impeller feed pump 1.
  • the multi-stage feed pump 1 is supplied with liquid working fluid-lubricant solution, which solution enters the inlet 2 in the pump.
  • the necessary for the lubrication of the bearings 9 of the expansion machine 5 mass flow is diverted directly at a suitable point 3 with a prevailing pressure level between two adjacent wheels and the bearings 9 are provided.
  • the bearings 9 are supplied via the lubricant supply 4, wherein the lubricant passes through the bearings and is discharged via a discharge line / device 6.
  • the discharge line / device 6 is in communication with the outlet of the expansion machine 5, which in turn is in communication with the condenser 7.
  • both the lubricant supply 4 and the lubricant discharge line 6 can be integrated into the expansion machines 5 and need not be designed as a separate line, but can be part of the housing or the rotors.
  • the exhaust steam and the lubricant pass to the condenser 7, from which the liquefied working medium lubricant solution is conducted to the bearing points 9 and to the evaporator 8 by means of a feed pump as described.
  • the working fluid evaporates, but the lubricant remains liquid and serves for lubrication and sealing of the flanks of the expansion machine. 5

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Water Supply & Treatment (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Rolling Contact Bearings (AREA)
EP12198869.5A 2012-12-21 2012-12-21 Lubrification de machines d'expansion Active EP2746543B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP12198869.5A EP2746543B1 (fr) 2012-12-21 2012-12-21 Lubrification de machines d'expansion
US14/653,242 US10100682B2 (en) 2012-12-21 2013-12-03 Lubrication of expansion machines
CN201380066562.XA CN105102770B (zh) 2012-12-21 2013-12-03 膨胀机的润滑
PCT/EP2013/075310 WO2014095333A2 (fr) 2012-12-21 2013-12-03 Lubrification de machines à expansion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12198869.5A EP2746543B1 (fr) 2012-12-21 2012-12-21 Lubrification de machines d'expansion

Publications (2)

Publication Number Publication Date
EP2746543A1 true EP2746543A1 (fr) 2014-06-25
EP2746543B1 EP2746543B1 (fr) 2016-09-28

Family

ID=47561200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12198869.5A Active EP2746543B1 (fr) 2012-12-21 2012-12-21 Lubrification de machines d'expansion

Country Status (4)

Country Link
US (1) US10100682B2 (fr)
EP (1) EP2746543B1 (fr)
CN (1) CN105102770B (fr)
WO (1) WO2014095333A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108138695A (zh) * 2015-10-09 2018-06-08 Ifp新能源公司 支承以朗肯循环运转的闭合电路元件转轴的轴承的润滑设备及其使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2520771B1 (fr) * 2011-05-03 2016-08-10 Orcan Energy AG Procédé et dispositif de chauffage rapide de lubrifiant pour machines d'expansion lubrifiées

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292366A (en) * 1965-07-16 1966-12-20 United Aircraft Corp Power generating system using thiophene as a working fluid
US4191021A (en) * 1976-08-11 1980-03-04 Hitachi, Ltd. Small power plant utilizing waste heat
US5329771A (en) * 1990-09-26 1994-07-19 Oy High Speed Tech Ltd. Method for securing the lubrication of bearings in a hermetic high-speed machine
GB2427002A (en) 2005-06-10 2006-12-13 Univ City Expander lubrication in vapour power generating system
DE102007008609A1 (de) * 2007-02-22 2008-08-28 Eckert, Frank ORC-System für Verbrennungsmotoren
DE202011109838U1 (de) * 2011-02-23 2012-03-15 En3 Gmbh Vorrichtung zur Schmierung eines Gleitlagers in einem Dampfexpander

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH574564A5 (fr) * 1974-08-16 1976-04-15 Bbc Brown Boveri & Cie
JPS5447048A (en) * 1977-09-20 1979-04-13 Ishikawajima Harima Heavy Ind Co Ltd Lubricating device of low-boiling-point-medium tubine
US4276002A (en) * 1979-03-09 1981-06-30 Anderson James H Turbopump unit for deep wells and system
US5180034A (en) * 1990-12-06 1993-01-19 General Electric Co. Adaptive lubrication oil system
JP5372660B2 (ja) * 2008-11-20 2013-12-18 川崎重工業株式会社 タービン発電機システム
CN101660596B (zh) * 2009-06-23 2011-02-09 吉林大学 大功率复合齿轮前增速后增速调速型液力偶合器传动装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3292366A (en) * 1965-07-16 1966-12-20 United Aircraft Corp Power generating system using thiophene as a working fluid
US4191021A (en) * 1976-08-11 1980-03-04 Hitachi, Ltd. Small power plant utilizing waste heat
US5329771A (en) * 1990-09-26 1994-07-19 Oy High Speed Tech Ltd. Method for securing the lubrication of bearings in a hermetic high-speed machine
GB2427002A (en) 2005-06-10 2006-12-13 Univ City Expander lubrication in vapour power generating system
DE102007008609A1 (de) * 2007-02-22 2008-08-28 Eckert, Frank ORC-System für Verbrennungsmotoren
DE202011109838U1 (de) * 2011-02-23 2012-03-15 En3 Gmbh Vorrichtung zur Schmierung eines Gleitlagers in einem Dampfexpander

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108138695A (zh) * 2015-10-09 2018-06-08 Ifp新能源公司 支承以朗肯循环运转的闭合电路元件转轴的轴承的润滑设备及其使用方法

Also Published As

Publication number Publication date
EP2746543B1 (fr) 2016-09-28
US10100682B2 (en) 2018-10-16
WO2014095333A2 (fr) 2014-06-26
CN105102770A (zh) 2015-11-25
WO2014095333A3 (fr) 2014-12-04
US20160169055A1 (en) 2016-06-16
CN105102770B (zh) 2018-01-30

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