WO2002073005A1 - Cogenerateur a deplacement positif de type a vapeur - Google Patents

Cogenerateur a deplacement positif de type a vapeur Download PDF

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Publication number
WO2002073005A1
WO2002073005A1 PCT/CZ2002/000012 CZ0200012W WO02073005A1 WO 2002073005 A1 WO2002073005 A1 WO 2002073005A1 CZ 0200012 W CZ0200012 W CZ 0200012W WO 02073005 A1 WO02073005 A1 WO 02073005A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston
head
steam
vapour
modified
Prior art date
Application number
PCT/CZ2002/000012
Other languages
English (en)
Inventor
Tomás KLÍR
Jirí STASTN
Original Assignee
Polycomp A.S.
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 Polycomp A.S. filed Critical Polycomp A.S.
Publication of WO2002073005A1 publication Critical patent/WO2002073005A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B29/00—Machines or engines with pertinent characteristics other than those provided for in preceding main groups
    • F01B29/04—Machines or engines with pertinent characteristics other than those provided for in preceding main groups characterised by means for converting from one type to a different one
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
    • F01B17/00—Reciprocating-piston machines or engines characterised by use of uniflow principle
    • F01B17/02—Engines
    • F01B17/04—Steam engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B69/00—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/002—Double acting engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention concerns a vapour (gas) type positive-displacement cogeneration unit especially for small and medium capacities utilisable in connection with an electric power generating unit or as a direct prime mover of machines.
  • a large plurality of communal and technical heat energy supply sources are represented by dislocated medium-pressure boiler units producing a moderately overheated steam at a gauge pressure approximately 1 to 1.5 MPa. This steam is supplied, after a reduction of its pressure, to a further communal or technological process utilization, while utilizing above all its condensing heat.
  • a small-capacity cogeneration unit incorporated between a medium-pressure boiler and consumer inputs.
  • This unit consists of a modified single or multicylinder mechanism of a diesel or ignition type inner combustion engine or compressor or alike.
  • Each cylinder of said mechanisms has a special head comprising one filling channel and one exhaust channel.
  • a hollow filling rotational slide valve type gear and a hollow exhaust rotational slide valve gear are fitted on each head.
  • This concept comprises no piston rod and no crosshead guides.
  • the modification of the basic mechanism consists in replacing the original engine head featuring a conventional valve gear with an special head featuring a slide-valve gear.
  • Said cogeneration unit operates as a single- acting steam engine.
  • the substance of the cogeneration unit according to the invention is utilizing a basic modified mechanism of an inner combustion ignition or diesel engine or compressor, from ' which the engine crankcase (block), the oil circulation system, the crank, conrod, piston and cylinder are mostly utilized.
  • the oil circulation system is modified and limited to the function of lubrication of the crankcase mechanism including the cylinder and said modified original piston.
  • the piston takes over the function of a crosshead and is modified so that the piston rod together with the conrod can be fitted into its original piston pin by an articulation joint.
  • One or several working steam/gas cylinders with corresponding steam/gas inlet and outlet heads with a slide-valve steam/gas distribution gear are connected to the basic engine unit, modified in the said manner from a single or multicylinder engine, as a superstructure.
  • a double-acting working piston runs in said cylinders.
  • This piston is connected with the basic modified engine unit by a hollow guide rod and by a piston rod.
  • the hollow guide rod is rigidly connected with the double-acting working piston while the other end of said hollow rod is free.
  • the hollow guide rod guides the working piston and seals off at the same time the steam leakage and oil infiltration into the cylinder working chamber.
  • the piston rod travelling in the guide rod is articulated in the working cylinder working piston and at the same time also articulated in the modified piston of the original engine unit.
  • the piston rod transfers the reciprocating force from the working cylinder to the crank mechanism of the basic engine unit.
  • Such preferred structure of a hollow guide rod and of the piston rod provides for a perfect guiding of the double-acting working steam piston in the cylinder and a long life expectancy of the guide bearing and of the stuffing box through both of which it passes.
  • An articulated fitting of the piston rod compensates for all imprecisions between the guide axis of the modified piston of the original engine unit, i.e. between the axis of the guide of the modified piston (crosshead) and the axis of guide surfaces of the working steam piston. Both said axes thus become, under current tolerances, independent from each other.
  • the advantage of such concept is in that basic components of mass-produced engines can be used.
  • the hollow guide rod and the piston rod made according to the present invention compensate, above all in multi-cylinder types, any coaxiality deviations due to thermal dilatation, vibration and production inaccuracies, while perfectly sealing off the working chamber of the working cylinder against steam leakage and oil infiltration into the working cylinder.
  • the hollow rod and piston rod assembly enables to connect without any problems the basic engine unit with the steam-driven working section, and owing to the compensation of any and all possible other coaxiality imprecisions it also saves costs in assembling and manufacturing of the steam-driven working superstructure.
  • a cogeneration unit built according to the invention represents an acceptable prime cost with a short investment payback period owing to the possibility of using a cheap mass-manufactured engine. It finds therefore a good application as a replacement for a pressure reducing valve even where a conventional steam engine or turbine are unrealistic for economic reasons.
  • Such setup connected with a power generator in a cogeneration plant or in a gas pressure reduction step provides a cheap production of electric power.
  • Fig. 1 schematically shows a sectional view of the cylinder of a multicylinder cogeneration positive displacement unit composed, according to the invention from modified components of a multicylinder internal combustion engine and of a steam/vapour driven working section.
  • a head . 13 carrying an intermediate piece 14 is fitted on the cylinder 8.
  • a bottom head 15 of the distribution gear is mounted, carrying a cylinder 0 with an upper head 16 of the distribution, gear, thus constituting a steam/vapour working section, in which a non-lubricated piston 11 is travelling.
  • a slide-valve distribution gear (not shown here) is fitted, actuated by means of a crankshaft 9.
  • the reciprocating strokes of the piston 11 are transferred into a rotating motion by a piston rod 2 one end of which is fitted by means of head 20 on the pin J_8 of piston JT.
  • the other end of piston rod 2 carries a head 19, articulated together with a conrod head 7 on the pin 6 of a modified piston 5.
  • Said modified piston 5 sliding in cylinder 8 plays the role of a crosshead.
  • the piston rod 2 transferring the force from piston JJ_ onto the crankshaft 9 is situated in the cavity of a guide rod 1, whose one end is fastened on the double-acting piston 1_1, the other end being loose.
  • the hollow rod 1 is fitted with slide fit in a bearing 3 and in a stuffing box 4, said bearing 3 being fitted in the bottom distribution head 1_5, on which also the stuffing box 4 is mounted.
  • the crankcase block
  • the oil supply system the crankshaft
  • the crank a modified piston
  • the role of the oil supply system is limited merely to the lubrication of the crank mechanism including the cylinder and the piston.
  • An articulated fit of piston rod 2 in piston 11 and in piston 5 provides for the compensation of any deviation of coaxiality between the axis of the guides for the modified piston 5 (crosshead) and the travel axis of the working steam/vapour piston U as determined by the hollow rod 1. Both said axes are, owing to the invention concept, independent from each other under current tolerances, which yields, especially for multicylinder models, also the compensation of deviations due to thermal dilatation, vibration and/or possible manufacturing tolerances.
  • the hollow guide rod provides for sealing off the steam/vapour working cylinder cavity while preventing at the same time oil from intruding into the oilfree working chamber of the cogeneration unit cylinder.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

L'invention concerne un cogénérateur à déplacement positif à vapeur, composé d'un mécanisme moteur modifié d'une machine rotative alternative de type à piston et d'un cylindre de travail à vapeur (10) avec piston à double effet (11), sur lequel un tube-guide creux (1) est monté avec un ajustement glissant dans un roulement (3) et dans un presse-garniture (4) fixé sur un fond (15). Une tige de piston (2) se déplace dans le tube-guide creux (1), une extrémité de la tige de piston (2) étant articulée au niveau du piston (11) et l'autre extrémité étant articulée au niveau d'un piston modifié (5) de la machine rotative de type à piston.
PCT/CZ2002/000012 2001-03-13 2002-03-01 Cogenerateur a deplacement positif de type a vapeur WO2002073005A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZPV2001-899 2001-03-13
CZ2001899A CZ292508B6 (cs) 2001-03-13 2001-03-13 Parní objemová kogenerační jednotka

Publications (1)

Publication Number Publication Date
WO2002073005A1 true WO2002073005A1 (fr) 2002-09-19

Family

ID=5473268

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CZ2002/000012 WO2002073005A1 (fr) 2001-03-13 2002-03-01 Cogenerateur a deplacement positif de type a vapeur

Country Status (2)

Country Link
CZ (1) CZ292508B6 (fr)
WO (1) WO2002073005A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2534888A (en) * 2015-02-03 2016-08-10 Fluid Energy Solutions Int Ltd Method of manufacturing a fluid engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1045702A (en) * 1912-07-23 1912-11-26 Carl Grunwald Cylinder for double-acting piston-engines.
US2212665A (en) * 1937-11-15 1940-08-27 Sulzer Ag Double-acting engine
US2514287A (en) * 1946-10-10 1950-07-04 Ajax Iron Works Compound engine conversion unit
CH286918A (fr) 1950-06-24 1952-11-15 Zurcher Roger Palier pour mobile d'horlogerie.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1045702A (en) * 1912-07-23 1912-11-26 Carl Grunwald Cylinder for double-acting piston-engines.
US2212665A (en) * 1937-11-15 1940-08-27 Sulzer Ag Double-acting engine
US2514287A (en) * 1946-10-10 1950-07-04 Ajax Iron Works Compound engine conversion unit
CH286918A (fr) 1950-06-24 1952-11-15 Zurcher Roger Palier pour mobile d'horlogerie.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2534888A (en) * 2015-02-03 2016-08-10 Fluid Energy Solutions Int Ltd Method of manufacturing a fluid engine
GB2534888B (en) * 2015-02-03 2017-05-17 Fluid Energy Solutions Int Ltd Method of manufacturing a fluid engine

Also Published As

Publication number Publication date
CZ2001899A3 (cs) 2002-10-16
CZ292508B6 (cs) 2003-10-15

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