CN106121812A - A kind of multiple spot air inlet micro-free-piston composite power device - Google Patents

A kind of multiple spot air inlet micro-free-piston composite power device Download PDF

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Publication number
CN106121812A
CN106121812A CN201610591973.6A CN201610591973A CN106121812A CN 106121812 A CN106121812 A CN 106121812A CN 201610591973 A CN201610591973 A CN 201610591973A CN 106121812 A CN106121812 A CN 106121812A
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CN
China
Prior art keywords
piston
piston mechanism
cavity
air inlet
combustor
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CN201610591973.6A
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Chinese (zh)
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CN106121812B (en
Inventor
黄蓉
柏金
王谦
张迪
禹莉莉
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Jiangsu University
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Jiangsu University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/28Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
    • F02B75/287Engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with several pistons positioned in one cylinder one behind the other
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01NGAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N5/00Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/04Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using kinetic energy
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/04Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
    • F02B63/041Linear electric generators
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/12Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

The invention provides a kind of multiple spot air inlet micro-free-piston composite power device, including cylinder, stator winding, miniature turbine device and commutator, stator winding is around in cylinder outer surface, and commutator is connected with stator winding by wire, and miniature turbine device is connected with cylinder interior by pipeline;Multiple spot air inlet micro-free-piston composite power device in the present invention is arranged symmetrically with, and simple in construction is stable, effectively reduces operating power attenuation.

Description

A kind of multiple spot air inlet micro-free-piston composite power device
Technical field
Present document relates to utilize micro-free-piston power set and the novel power device of miniature turbine device, refer in particular to one many Click on feeble QI free-piston composite power device.
Background technology
While micro-fabrication technology obtains improving and developing, MEMS is developed rapidly, high-energy-density, letter Single portable power source equipment the most also arouses people's interest.Micro-free piston installation as a kind of novel power set, Compared with existing energy device, having the higher thermal efficiency, its yardstick is little, carries more convenient, eliminates toggle, Simple in construction, fuel can carry out lighting or compression ignition in the appropriate location of cylinder.
But micro-free-piston power set there is also some shortcomings: structure distribution is compacter, gas handling system does not the most obtain To being effectively improved, fuel cannot fully burn, and the waste gas that burning produces the most is not utilized effectively.The present invention is the most right Gas handling system is improved so that fuel combination can uniformly be covered with combustor, reaches stable, fully burns.Due to compression combustion Burning process, pressure changes greatly, and multiple spot air inlet makes fuel be more evenly distributed, multiple spot compression ignition simultaneously, makes piston stress more flat Weighing apparatus.
Summary of the invention
For Shortcomings in prior art, the present invention is on the basis of general micro-free-piston power set, to piston Connecting rod is improved, the beneficially uniform air inlet of fuel combination, makes fuel combustion more stable.
The present invention is achieved through the following technical solutions:
A kind of multiple spot air inlet micro-free-piston composite power device, including cylinder, stator winding, miniature turbine device and Commutator, stator winding is around in cylinder outer surface, and commutator is connected with stator winding by wire, and miniature turbine device is by pipe Road is connected with cylinder interior;
Be provided with in described cylinder the first cavity, inlet plenum, the second cavity, air inlet, first row QI KOU, second exhaust port, First piston mechanism, the second piston mechanism, the 3rd piston mechanism, magnetic laminations and connecting rod, the first cavity and is located at by inlet plenum Between two cavitys, between two ends and the first cavity and second cavity of inlet plenum, it is provided with dividing plate;Described first piston mechanism is located at In first cavity, the first cavity is divided into the first pressure recovery room and the first combustor by first piston mechanism;Described 3rd lives Plug mechanism is located in the second cavity, and the second cavity is divided into the second pressure recovery room and the second combustor by the 3rd piston mechanism; Described second piston mechanism is located in inlet plenum, and inlet plenum is divided into the first inlet plenum and the second air inlet by the second piston mechanism Room, and the second piston mechanism is located at the central authorities of connecting rod, the two ends of described connecting rod are each passed through described dividing plate and first piston mechanism Connect with the second piston mechanism;Described air inlet is connected with inlet plenum, described first row QI KOU and the first combustion chamber, Described second exhaust port and the second combustion chamber;
Described magnetic laminations is around in first piston mechanism, the second piston mechanism and the surface of the 3rd piston mechanism;Described micro- The arrival end of type turbine apparatus is connected with first row QI KOU and second exhaust port by pipeline.
Further, described connecting rod is provided with groove, axially arranged along connecting rod of described groove.
Beneficial effect:
(1) the multiple spot air inlet micro-free-piston composite power device in the present invention is arranged symmetrically with, simple in construction, runs steady Fixed, effectively reduce operating power attenuation.
(2) whole device is compared with existing micro-free-piston power set, and structure distribution is improved, air inlet and outlet device Improved, the connecting rod of magnetic piston is carved with uniform groove, beneficially multiple spot air inlet so that fuel obtains stable, abundant Burning.
(3) micro free-piston engine is effectively combined with miniature turbine device, improves the thermal efficiency, be conducive to miniaturization Development;Miniature turbine device can effectively utilize the waste gas of the High Temperature High Pressure of burning generation, heat energy conversion to be output as electric energy, heat Efficiency is utilized effectively.
Accompanying drawing explanation
Fig. 1 is the two-dimensional section schematic diagram of the present invention.
Fig. 2 is the schematic three dimensional views of connecting rod.
Fig. 3~6 is that the combustion incident that the multiple spot air inlet micro-free-piston composite power device according to the present invention occurs drives Dynamic piston moves to the situation schematic diagram of the first stroke of the cylinder second position from cylinder primary importance;
Fig. 7~10 is the combustion incident that the multiple spot inlet plenum micro-free-piston composite power device according to the present invention occurs Piston is driven to move to the situation schematic diagram during the second stroke of cylinder primary importance from the cylinder second position;
In figure: 1-the second pressure recovery room, 2-the first combustor, 3-the first inlet plenum, 4-air inlet, 5-the second air inlet Room, 61-first piston mechanism, 62-the second piston mechanism, 63-the 3rd piston mechanism, 7-the second combustor, 8-the first pressure return Multiple room, 9-second exhaust port, 10-first row QI KOU, 11-stator winding, 12-magnetic laminations, 13-cylinder, 14-miniature turbine dress Put, 15-commutator, 16-connecting rod
Detailed description of the invention
The invention will be further described with embodiment below in conjunction with the accompanying drawings:
As it is shown in figure 1, a kind of multiple spot air inlet micro-free-piston composite power device, including cylinder 13, stator winding 11, Miniature turbine device 14 and commutator 15, stator winding 11 is around in cylinder 13 outer surface, commutator 15 by wire and stator around Group 11 is connected, and miniature turbine device 14 is connected by pipeline and cylinder 13 are internal;
The first cavity, inlet plenum, the second cavity, air inlet 4, first row QI KOU 10, second row it is provided with in described cylinder 13 QI KOU 9, first piston mechanism the 61, second piston mechanism the 62, the 3rd piston mechanism 63, magnetic laminations 12 and connecting rod 16, inlet plenum It is located between the first cavity and the second cavity, between two ends and the first cavity and second cavity of inlet plenum, is provided with dividing plate;Described First piston mechanism 61 is located in the first cavity, and the first cavity is divided into the first pressure recovery room 8 He by first piston mechanism 61 First combustor 2;Described 3rd piston mechanism 63 is located in the second cavity, and the second cavity is divided into by the 3rd piston mechanism 63 Two pressure recovery room 1 and the second combustor 7;Described second piston mechanism 62 is located in inlet plenum, and the second piston mechanism 62 will enter Air chamber is divided into the first inlet plenum 3 and the second inlet plenum 5, and the second piston mechanism 62 is located at the central authorities of connecting rod 16, described connecting rod The two ends of 16 are each passed through described dividing plate and are connected with first piston mechanism 61 and the second piston mechanism 62;Described air inlet 4 with enter Air chamber is connected, and described first row QI KOU 10 is connected with the first combustor 2, described second exhaust port 9 and the second combustor 7 phase Connection;
Described magnetic laminations 12 is around in first piston mechanism the 61, second piston mechanism 62 and the table of the 3rd piston mechanism 63 Face;The arrival end of described miniature turbine device 14 is connected with first row QI KOU 10 and second exhaust port 9 by pipeline.
Being provided with groove on described connecting rod 16, described groove is axially arranged along connecting rod 16.
Multiple spot air inlet micro-free-piston composite power device specifically includes that piston mechanism 61,62,63 (such as magnetic piston) With connecting rod 16, it is configured in cylinder;It is arranged on two combustor in the middle of cylinder 13;Gas handling system, gas extraction system, it is configured It is used for the waste gas of High Temperature High Pressure is delivered to turbine apparatus;Pressure recovery room, it is configured to chemical energy burning produced Promotion piston moves reciprocatingly;Small dimension turbine device, it is configured to the High Temperature High Pressure waste gas that produced by burning and then turns Dynamic, converting electrical energy exports.
Described multiple spot air inlet micro-free-piston composite power device, its also include be distributed in piston mechanism 61,62, Magnetic laminations 12 on 63, the outer stator winding 11 being wound around of cylinder 13.Two combustor burning expansion in turn promote piston mechanism Move back and forth, have stator winding 11 to be wound around outside cylinder 13, do relative motion with magnetic piston, cutting magnetic induction line, and then produce electricity Can, electric current is sent to commutator 15 for extraneous motor running by wire.
The making material of magnetic piston and stator winding 11 has heat-resisting, and resistivity is high, the feature that magnetic pole can be good.Magnetic Piston is made up of two opposed pistonss and connecting rod.
The termination of magnetic piston and the inwall of combustor all scribble incendiary agent catalyst coatings, and when the micro combustor of one end During middle gaseous mixture fuel combustion, expansion work and then promotion piston movement, the combustor of the other end can compress fuel combination simultaneously, Stress relatively balances.
In the present invention, the design of micro combustor requires: magnetic piston is configured in cylinder, and piston is coaxial with cylinder 13, Do linear flow in cylinder 13 and produce electric current;Gas extraction system is configured in the two ends of cylinder lower part;Air inlet 4 is arranged in cylinder The centre of the inlet plenum of 13;Also it is carved with uniform groove on connecting rod 16, contributes to fuel combination homogeneous compaction in combustor.
Described micro-free-piston dual powerplant, the work of gigback is played in a pair wherein said pressure recovery room With, when piston mechanism moves to cylinder 13 second position from cylinder 13 primary importance, compressed air in pressure recovery room Apply restoring force to corresponding piston mechanism, make piston mechanism move to primary importance from the second position of cylinder 13.
Micro-free-piston dual powerplant breathing action is mainly sketched and is, when corresponding piston mechanism is from respective When one position moves to the respective second position, inlet plenum sucks inlet air flow, the first burning now by corresponding air inlet Having been filled with fuel combination in room 2, the second combustor 7 has reached required compression ratio in the middle of a upper process, the most Burn, at piston mechanism in the second combustor 7 direction moving process, through second exhaust port 9, second combustor is fired The waste gas burning 7 generations are discharged, and fuel combination is compressed to the first combustor 2 from inlet plenum, when piston mechanism gradually arrives the During two positions, the mixed fuel gas that the first combustor 2 is full of reaches self-ignition point, burns.
Miniature turbine device 14 blade accepts from first row QI KOU 10 or the waste gas of the High Temperature High Pressure of second exhaust port 9, And then promote blade to rotate, export electric energy.
One, air inlet, exhaust work process:
First stroke:
With reference to accompanying drawing 3 to Fig. 6, which illustrate piston during the first stroke according to an exemplary embodiment of the present invention The situation that mechanism moves to cylinder 13 second position from cylinder primary importance.With reference to accompanying drawing 3, first, air inlet 4 is opened, mixing Fuel gas enters the second inlet plenum 5 from air inlet 4, and magnetic piston mechanism 61 is now in the primary importance of cylinder 13, the first combustion Burning room 2 and have been filled with fuel combination in upper one-stroke, there is combustion incident, mixing combustion the most in a upper process in the second combustor 7 Material occurs burning expansion to promote piston mechanism 61 to start to second position motion;With reference to Fig. 4, magnetic piston mechanism 61 is to second Putting movement, the mixed fuel gas in the first combustor 2 starts to be compressed, and the mixed fuel gas of the second inlet plenum 5 also begins to Slowly compressed;When magnetic piston mechanism 61 moves to position shown in Fig. 5 under the effect that mixed fuel firing expands, second The High Temperature High Pressure waste gas produced that burns in combustor 7 starts to discharge from second exhaust port 9, the fuel combination in the first combustor 2 It is in high compression ratio;With reference to Fig. 6, magnetic piston mechanism 61 moves to the second position, and the fuel combination in the second inlet plenum 5 is Being compressed to the second combustor 7 completely, with reference to Fig. 2, by the groove on connecting rod 16, fuel combination homogeneous compaction is to the second combustor 7 and high temperature and high pressure gas remaining in the second combustor 7 is being scanned out from second exhaust port 9, fuel combination in the first combustor 2 Reaching required self-ignition point, combustion incident occurs.
Second stroke:
With reference to accompanying drawing 7 to Figure 10, live during which illustrating the second stroke according to an exemplary embodiment of the present invention The situation that plug mechanism moves to primary importance from cylinder 13 second position.With reference to Fig. 7, magnetic piston mechanism 61 is in the of cylinder Two positions, the first combustor 2 experiences the first stroke and has been in fired state, and the second combustor 7 also has been filled with fuel combination, air inlet Mouth 4 is in open mode, and mixed fuel gas enters into the first inlet plenum 3 from air inlet 4, and mixed fuel firing expands against work Plug mechanism 61 starts to move to primary importance;With reference to Fig. 8, magnetic piston mechanism 61 gradually moves to primary importance, the first air inlet Mixed fuel gas in room 3 is slowly compressed, and the mixed gas in the second combustor 7 is the most gradually compressed;Work as magnetic piston Mechanism 61 continues to move to position as shown in Figure 9 to primary importance under the effect of burning expansion, and in the first combustor 2, burning is produced The waste gas of raw High Temperature High Pressure starts to discharge from first row QI KOU 10, and the fuel combination in the second combustor 7 is in high compression ratio State;With reference to Figure 10, when magnetic piston mechanism 61 moves to primary importance, the fuel combination in the first inlet plenum 3 is by living Groove homogeneous compaction in plug mechanism 6 to the first combustor 2, and by High Temperature High Pressure waste gas remaining in the first combustor 2 from First row QI KOU 10 scans out, and in the second burning 7, fuel combination reaches required self-ignition point, and combustion incident occurs.
Repeating said process, piston mechanism 6 carries out the compression-ignited work process of two-stroke in cylinder 13.
Two, conversion process of energy
With reference to Fig. 1, piston mechanism moves reciprocatingly in cylinder 13, owing to the making material of piston mechanism has heat-resisting, Resistivity is high, the feature that magnetic is fabulous, and winding coil 11 is moving relative to piston mechanism, and then cutting magnetic induction line, produces sense Answer electromotive force, export electric energy.
It addition, the high temperature and high pressure gas from air vent discharge is introduced into small dimension turbine device 14, promotes blade to rotate, carry out Generating, the thermal efficiency effectively improves.

Claims (2)

1. multiple spot air inlet micro-free-piston composite power device, it is characterised in that include cylinder (13), stator winding (11), miniature turbine device (14) and commutator (15), stator winding (11) is around in cylinder (13) outer surface, and commutator (15) leads to Crossing wire to be connected with stator winding (11), miniature turbine device (14) is connected by pipeline and cylinder (13) are internal;
Be provided with in described cylinder (13) the first cavity, inlet plenum, the second cavity, air inlet (4), first row QI KOU (10), second Air vent (9), first piston mechanism (61), the second piston mechanism (62), the 3rd piston mechanism (63), magnetic laminations (12) and company Bar (16), inlet plenum is located between the first cavity and the second cavity, between two ends and the first cavity and second cavity of inlet plenum It is provided with dividing plate;Described first piston mechanism (61) is located in the first cavity, and the first cavity is divided into by first piston mechanism (61) First pressure recovery room (8) and the first combustor (2);Described 3rd piston mechanism (63) is located in the second cavity, the 3rd piston Second cavity is divided into the second pressure recovery room (1) and the second combustor (7) by mechanism (63);Described second piston mechanism (62) Being located in inlet plenum, inlet plenum is divided into the first inlet plenum (3) and the second inlet plenum (5), and by the second piston mechanism (62) Two piston mechanisms (62) are located at the central authorities of connecting rod (16), and the two ends of described connecting rod (16) are each passed through described dividing plate and first piston Mechanism (61) and the second piston mechanism (62) connect;Described air inlet (4) is connected with inlet plenum, described first row QI KOU (10) Being connected with the first combustor (2), described second exhaust port (9) is connected with the second combustor (7);
Described magnetic laminations (12) is around in first piston mechanism (61), the second piston mechanism (62) and the 3rd piston mechanism (63) Surface;The arrival end of described miniature turbine device (14) is connected with first row QI KOU (10) and second exhaust port (9) by pipeline Logical.
A kind of multiple spot air inlet micro-free-piston composite power device the most according to claim 1, it is characterised in that in institute Stating connecting rod (16) and be provided with groove, described groove is axially arranged along connecting rod (16).
CN201610591973.6A 2016-07-25 2016-07-25 A kind of micro- free-piston composite power device of multiple spot air inlet Active CN106121812B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107740727A (en) * 2017-08-18 2018-02-27 江苏大学 A kind of micro- free-piston generators of HCCI
CN108049969A (en) * 2017-11-30 2018-05-18 江苏大学 A kind of micro-free-piston power set with UTILIZATION OF VESIDUAL HEAT IN
CN109555598A (en) * 2018-10-26 2019-04-02 江苏大学 A kind of micro- free-piston power device equipped with auto-pressurizing uniflow scavenging structure

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JP2008531915A (en) * 2005-02-24 2008-08-14 フィッジェラルド,ジョン,ダブリュー. Variable piston stroke type 4-cylinder, 4-cycle, free piston, premixed gas compression ignition internal combustion reciprocating piston engine
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CN103670823A (en) * 2013-05-27 2014-03-26 江苏大学 Inlet gas preheating type micro free piston electric generator
CN104196623A (en) * 2014-07-29 2014-12-10 北京理工大学 Natural aspiration type free piston internal combustion engine generator with two stages of pistons
US9057323B2 (en) * 2008-06-25 2015-06-16 Griend Holding B.V. Drive system with a rotary energy-transmission element
CN105569838A (en) * 2014-10-10 2016-05-11 徐建宁 Electric-started free piston engine

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DE19943993A1 (en) * 1999-09-14 2001-03-15 Volkswagen Ag Internal combustion engine for motor vehicle, has linear generator with permanent magnet(s) on piston rod moved axially and reciprocally in coil winding when dual piston oscillates
JP2008531915A (en) * 2005-02-24 2008-08-14 フィッジェラルド,ジョン,ダブリュー. Variable piston stroke type 4-cylinder, 4-cycle, free piston, premixed gas compression ignition internal combustion reciprocating piston engine
US9057323B2 (en) * 2008-06-25 2015-06-16 Griend Holding B.V. Drive system with a rotary energy-transmission element
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107740727A (en) * 2017-08-18 2018-02-27 江苏大学 A kind of micro- free-piston generators of HCCI
CN108049969A (en) * 2017-11-30 2018-05-18 江苏大学 A kind of micro-free-piston power set with UTILIZATION OF VESIDUAL HEAT IN
CN109555598A (en) * 2018-10-26 2019-04-02 江苏大学 A kind of micro- free-piston power device equipped with auto-pressurizing uniflow scavenging structure
CN109555598B (en) * 2018-10-26 2020-12-18 江苏大学 Micro free piston power device with self-pressurization type direct-current scavenging structure

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