EP3594459A1 - Verfahren zur versorgung von dampfkolbenmaschinen mit ultra-überkritischem dampf und dampfinjektor zur versorgung von dampfkolbenmaschinen mit ultra-überkritischem dampf - Google Patents

Verfahren zur versorgung von dampfkolbenmaschinen mit ultra-überkritischem dampf und dampfinjektor zur versorgung von dampfkolbenmaschinen mit ultra-überkritischem dampf Download PDF

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Publication number
EP3594459A1
EP3594459A1 EP18460047.6A EP18460047A EP3594459A1 EP 3594459 A1 EP3594459 A1 EP 3594459A1 EP 18460047 A EP18460047 A EP 18460047A EP 3594459 A1 EP3594459 A1 EP 3594459A1
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EP
European Patent Office
Prior art keywords
steam
needle
injector
solenoid
ultra
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.)
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Application number
EP18460047.6A
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English (en)
French (fr)
Inventor
Janusz Welnowski
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.)
Prosperitos Sp Z OO
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Prosperitos Sp Z OO
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Filing date
Publication date
Application filed by Prosperitos Sp Z OO filed Critical Prosperitos Sp Z OO
Publication of EP3594459A1 publication Critical patent/EP3594459A1/de
Withdrawn legal-status Critical Current

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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
    • 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steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
    • F01K7/32—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 using steam of critical or overcritical pressure
    • 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
    • F01K21/00—Steam engine plants not otherwise provided for
    • F01K21/02—Steam engine plants not otherwise provided for with steam-generation in engine-cylinders

Definitions

  • the object of invention is a method of supplying steam piston engines with ultra-supercritical steam and a steam injector to effect the method.
  • Supercritical steam is present at a pressure from 24.1 MPa and a temperature from 538°C.
  • Ultra-supercritical steam is present at a pressure from 27.2 MPa and a temperature from 600°C.
  • the steam in the ultra-supercritical state has no defined boundary between liquid water and its vapour. Water (the vapour of it) under a high pressure remains liquid at a high temperature and does not boil or evaporate. If the water heated to this high temperature range and maintained in this high pressure range is throttled to a lower pressure by passing its stream via an orifice, a part of the stream is immediately and explosively converted into steam downstream of the orifice. This phenomenon is applied as a means of propelling steam piston engines.
  • the propulsion applications in steam piston engines are based on dedicated admission valves for supplying steam as the working medium to the engines; these inlet valves are known as steam injectors for steam piston engines, the prior art of which is shown in the patents: CN101892930 , JP60184913 , DE102007046316 , US2008093477 , and EP1277014 .
  • a steam injector without the foregoing drawbacks is known as described in the patent no. PL220363 ; however, its mechanical design is complicated and does not provide a high durability or reliability of performance.
  • the purpose of the solution according to the invention is a novel method of supplying steam piston engines with ultra-supercritical steam by application of an injection pulse effect, and a novel steam injector intended to effect the method, characterized by a high operating frequency and an infinitely variable, precisely adjustable injected steam dose, and intended for a steam piston engine with a novel operating principle and a novel design, where the steam injector has a high durability and reliability by a radical simplification of the design.
  • a steam admission valve is replaced with a steam injector which directs highly-pressurized hot water directly into the chamber of a steam piston engine.
  • the use of the steam injector which injects water instead of a steam admission valve results in a significantly lower amount of water injected into the steam piston engine during each stroke than the volume of steam passing through a steam admission valve in a steam piston engine with a steam turbine generator (where steam under atmospheric pressure occupies 1650 times more of volume than water).
  • the comparably small amount of water is much easier to distribute with a steam injector than with a steam admission valve, which must pass much more steam in a turbine engine. This comparably small amount of water provides another advantage, which is speed.
  • the essence of the method of supplying ultra-supercritical steam to a steam piston engine by application of an injection pulse effect is a precise dosing of supercritical and ultra-supercritical water (the vapour of it) to a cylinder of the steam piston engine, where the precise dosing is effected by an infinitely variable change of the cross-section of an annular gap between the inlet opening seat of the steam injector and the needle of the steam injector, where the steam injector is operating in pulses of a high frequency, whereas the location of the steam injector needle, which varies by moving up and down, is controlled with an electromagnetic field generated by a cylindrical coil (a solenoid), where the solenoid is controlled with a driver (a controller) and the steam piston engine control computer to ensure infinitely variable, real-time changes of the injected steam dose as an effect of the changes in the load of the steam piston engine and in relation to the rotational speed of the crankshaft of the steam piston engine at 25 Hz or higher, and, simultaneously, with the adjustment of the injected water (the vapour of
  • the essence of the design of the steam injector according to the invention is a design of the steam injector, comprising of a body made of three interconnected and separable components; in the vertical plane within the body is the vertically sliding needle, one end of which rests in the cylinder inlet seat, while the opposite end of which rests against a spring in the body; the spring presses the needle to the cylinder opening seat of the steam piston engine, whereas the vertical movement of the needle is effected by an electromagnetic field generated by the cylindrical coil (a solenoid), where the solenoid is controlled with a driver (a controller) and the steam piston engine control computer according to the outputs of the sensors which monitor the operation of the steam piston engine to ensure a precise and controlled linear positioning of the needle along the vertical axis.
  • a technical advantage of the solution according to the invention is the feasibility of dosing a precise and variable dose of supercritical and ultra-supercritical water (the steam of) to a piston cylinder of a steam piston engine, and an infinitely variable adjustment of the same dose in the real time according to the changes in the load and the rotational speed of the steam piston engine.
  • a technical advantage is also the feasibility of achieving high speeds by a steam piston engine, with a significant improvement in the efficiency of the steam piston engine.
  • the method according to the invention is shown in detail in an example of the design and operation of the steam injection valve.
  • Supercritical and ultra-supercritical water (the steam of) is dosed in portions to the cylinder 16 of a steam piston engine by an infinitely variable change of the annular cross-section of the gap located between the seat of the inlet opening 15, located in the steam injector head 14 and the taper 12 of the needle 3.
  • the surface area of the annular gap is the result of a cross-sectional differential at diameter ⁇ 1 of the inlet opening 15 and diameter ⁇ 2 of the needle 3 in the plane 13. An increase in the annular gap surface area increases the steam dose admitted to the cylinder.
  • the axial movement of the needle 3 is a result of the total of: force F1, generated by the solenoid 10, and force F2 of the spring 1, where the force F1 is a result of the changes in the electromagnetic field generated by the solenoid as an effect of the current and the frequency generated by the solenoid driver 9, which is actuated according to the preset values from the control computer 8 according to the data 7 (rotational speed, pressure, temperature, etc.) relayed in real-time from the sensors installed on the steam piston engine.
  • the steam injector to realize the method comprises the body 17, which is formed by three separable components I to III, which are in turn interconnected with a threaded joint, and where the body houses axially aligned internal voids or seats: of the spring 1, the void below the needle 3, and the injection chamber 11 below.
  • the body component I has the solenoid 10 between the slide bearings 2 and 5; the solenoid controls the positioning of the needle 3 with electromagnetic fields.
  • the body components I and II feature the internal passageways 4 and 5 along the vertical plane and between the injection chamber 11 and the spring chamber 1; the internal passages equalize the pressure in the closed internal void of the body; below and within the body component I is the inlet opening 6 of the injection chamber 11 which admits steam.
  • the upward and downward movement of the needle 3 respectively opens and closes the entry to the inlet opening 15 of the cylinder 16.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Fuel-Injection Apparatus (AREA)
EP18460047.6A 2018-07-10 2018-07-27 Verfahren zur versorgung von dampfkolbenmaschinen mit ultra-überkritischem dampf und dampfinjektor zur versorgung von dampfkolbenmaschinen mit ultra-überkritischem dampf Withdrawn EP3594459A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL426295A PL426295A1 (pl) 2018-07-10 2018-07-10 Sposób zasilania parą wodną o parametrach ultra-nadkrytycznych tłokowych silników parowych i zawór do zasilania parą wodną o parametrach ultra-nadkrytycznych tłokowych silników parowych

Publications (1)

Publication Number Publication Date
EP3594459A1 true EP3594459A1 (de) 2020-01-15

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EP18460047.6A Withdrawn EP3594459A1 (de) 2018-07-10 2018-07-27 Verfahren zur versorgung von dampfkolbenmaschinen mit ultra-überkritischem dampf und dampfinjektor zur versorgung von dampfkolbenmaschinen mit ultra-überkritischem dampf

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EP (1) EP3594459A1 (de)
PL (1) PL426295A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4245969A1 (de) * 2022-03-16 2023-09-20 RD Estate GmbH & Co. KG Dampfmotor

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60184913A (ja) 1984-03-05 1985-09-20 Komatsu Ltd 蒸気原動機の吸気弁装置
EP1277014A1 (de) 2000-04-19 2003-01-22 Petrick & Wolf Energietechnik GmbH Dampfinjektor
US20080093477A1 (en) 2004-09-17 2008-04-24 Andrzej Miczyk Working - Fluid Injector for a Piston Steam Engine
DE102007046316A1 (de) 2007-09-27 2009-04-02 Robert Bosch Gmbh Kompakte Einspritzvorrichtung
CN101892930A (zh) 2009-05-19 2010-11-24 罗伯特·博世有限公司 用于电磁喷射器的有源关闭的电磁阀
EP2397658A1 (de) * 2010-06-17 2011-12-21 Siemens Aktiengesellschaft Steuergerät und Verfahren zum Steuern einer Dampfversorgungssteuerungsvorrichtung einer Dampfturbine und Dampfturbine
EP2484918A1 (de) * 2009-09-28 2012-08-08 TLV Co., Ltd. Dampfabgabesystem und dafür verwendetes rückschlagventil
WO2012123713A2 (en) * 2011-03-11 2012-09-20 Bhp Generation Limited An improved steam engine
DE102013001407A1 (de) * 2013-01-28 2014-07-31 Heinz Adomeit Wassermotor A
PL220363B1 (pl) 2012-04-10 2015-10-30 Wełnowski Janusz Itp Sposób zasilania parą wodną o parametrach ultranadkrytycznych tłokowych silników parowych i zawór wtryskowy w sposobie zasilania
DE102015105878B3 (de) * 2015-04-17 2016-06-23 Nexus Gmbh Überkritischer Kreisprozess mit isothermer Expansion und Freikolben-Wärmekraftmaschine mit hydraulischer Energieauskopplung für diesen Kreisprozess

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60184913A (ja) 1984-03-05 1985-09-20 Komatsu Ltd 蒸気原動機の吸気弁装置
EP1277014A1 (de) 2000-04-19 2003-01-22 Petrick & Wolf Energietechnik GmbH Dampfinjektor
US20080093477A1 (en) 2004-09-17 2008-04-24 Andrzej Miczyk Working - Fluid Injector for a Piston Steam Engine
DE102007046316A1 (de) 2007-09-27 2009-04-02 Robert Bosch Gmbh Kompakte Einspritzvorrichtung
CN101892930A (zh) 2009-05-19 2010-11-24 罗伯特·博世有限公司 用于电磁喷射器的有源关闭的电磁阀
EP2484918A1 (de) * 2009-09-28 2012-08-08 TLV Co., Ltd. Dampfabgabesystem und dafür verwendetes rückschlagventil
EP2397658A1 (de) * 2010-06-17 2011-12-21 Siemens Aktiengesellschaft Steuergerät und Verfahren zum Steuern einer Dampfversorgungssteuerungsvorrichtung einer Dampfturbine und Dampfturbine
WO2012123713A2 (en) * 2011-03-11 2012-09-20 Bhp Generation Limited An improved steam engine
PL220363B1 (pl) 2012-04-10 2015-10-30 Wełnowski Janusz Itp Sposób zasilania parą wodną o parametrach ultranadkrytycznych tłokowych silników parowych i zawór wtryskowy w sposobie zasilania
DE102013001407A1 (de) * 2013-01-28 2014-07-31 Heinz Adomeit Wassermotor A
DE102015105878B3 (de) * 2015-04-17 2016-06-23 Nexus Gmbh Überkritischer Kreisprozess mit isothermer Expansion und Freikolben-Wärmekraftmaschine mit hydraulischer Energieauskopplung für diesen Kreisprozess

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4245969A1 (de) * 2022-03-16 2023-09-20 RD Estate GmbH & Co. KG Dampfmotor
WO2023174816A1 (de) * 2022-03-16 2023-09-21 Rd Estate Gmbh & Co. Kg Dampfmotor

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