CN205422978U - Heat - electrotransformation device that can be used to vehicle engine tail gas waste heat recovery - Google Patents
Heat - electrotransformation device that can be used to vehicle engine tail gas waste heat recovery Download PDFInfo
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- CN205422978U CN205422978U CN201521031944.1U CN201521031944U CN205422978U CN 205422978 U CN205422978 U CN 205422978U CN 201521031944 U CN201521031944 U CN 201521031944U CN 205422978 U CN205422978 U CN 205422978U
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- free piston
- piston expander
- valve
- cylinder head
- expander
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
The utility model relates to a heat that can be used to vehicle engine tail gas waste heat recovery the integrated unit that electrotransformation device, the device are a free piston expander coupling linear electric motor is as energy conversion device to prime mover (being the free piston expander) for in the device has designed reliable distribution control mode. The device arrange two free piston expander oppositions and with a linear electric motor direct coupling, can be with the direct energy conversion that high temperature, high -pressure working gas carried that flows in the free piston expander for electric energy and output. The device can be applied to the pneumatic engine power system of car, vehicle engine tail gas waste heat utilization system etc. And to strict occasions such as compact installation space, high power density, have the advantage that compact structure is simple, the mechatronic degree is high, mechanical loss is little.
Description
Technical field
The utility model belongs to organic Rankine bottoming cycle and utilizes technical field, it is specifically related to one and can be used for vehicular engine waste heat from tail gas recoverable novel thermo-electrically conversion integrating device, the electric energy that the waste heat from tail gas of low taste can be converted into high-quality carries out output utilization, and improve the energy conversion efficiency of residual neat recovering system, reach the purpose of energy-saving and emission-reduction.
Background technology
Decompressor is as the core acting parts of organic Rankine bottoming cycle, and the power of organic rankine cycle system is exported by the quality of its performance to be had a direct impact.But when recovery vehicle is with engine exhaust heat energy, due to the restriction little by working medium flow, it is applied in the small-sized residual neat recovering systems such as automobile-used organic rankine cycle system there is certain difficulty by traditional displacement type expander.
As a example by screw type expansion machine, although it uses more universal, but owing to there is the reasons such as the leakage in gap, when HTHP Working medium gas is periodically at a high speed by suction pore, decompressor can be made to produce the biggest noise, need to take special silencing and damping measure.Simultaneously, the space curved surface machining accuracy of its helical, rotor and difficulty are higher, need to use multi-shaft interlocked technology and special equipment, cutter to process, cost is the highest, and due to the restriction of clearance seal and rotor rigidity etc., screw type expansion machine can't reach higher end of a period pressure as reciprocating expansion engine.By contrast, piston expansion engine is but more suitable for low discharge, low power situation.At present, China is concentrated mainly on refrigerating field about the research of piston expansion engine, the relevant scholars such as the only Feng Liming of University Of Tianjin to utilize reciprocating-piston decompressor reclaim engine exhaust heat can carry out research, remain yet with its structure and use for reference traditional single-cylinder engine, structure is complex, volume and weight are relatively big, constrain its commercial applications.
Summary of the invention
The purpose of this utility model is the deficiency in order to overcome above-mentioned decompressor, propose the integrated unit of a kind of novel free piston expander coupling linear electric motors as energy conversion device, and devise reliable distribution control mode for the prime mover (i.e. free piston expander) in device.This device by two opposed layouts of free piston expander and with a linear electric motors direct-coupling, electric energy can be converted directly into by flowing into the energy entrained by the high temperature of free piston expander, high-pressure working medium gas and export.This device is mainly used in automobile pneumatic engine power system, vehicular engine waste heat from tail gas utilizes system etc. that compact installing space, high power density etc. are required strict occasion.
In order to realize above-mentioned target, the technical solution that the utility model employing is following:
The thermo-electrically reforming unit that the utility model is proposed is a kind of equipment that vehicular engine waste heat from tail gas can be converted into electric energy output, and this device is mainly made up of free piston expander I (23), free piston expander II (32), linear electric motors and transmission device；Free piston expander I (23) and free piston expander II (32) is arranged symmetrically in linear electric motors (28) both sides；The connecting rod (1) of free piston expander I (23) and free piston expander II (32) is connected by flexible adapter with the mover of linear electric motors (28) respectively；Camshaft (20) output of free piston expander I (23) is connected by flat key with belt pulley I (24)；Drive pulley (33) and servomotor (27) output shaft are connected by flat key and are arranged in the centre of whole device, and the wiring of servomotor is connected with control module (37)；Belt pulley I (24) is connected by driving belt (26) with drive pulley (33)；The intermediate arrangement of driving belt (26) has strainer (25)；The transmission arrangments mode of the free piston expander II (32) of opposite side is identical with free piston expander I (23).
Being disposed with cylinder temperature sensor (34), in-cylinder pressure sensor (35) on the cylinder barrel (4) of both sides free piston expander, cylinder temperature sensor (34), the terminals of in-cylinder pressure sensor (35) are connected with control module (37)；Being disposed with displacement transducer (36) on the connecting rod (1) of free piston expander, the terminals of displacement transducer (36) are connected with control module (37).
Free piston expander structure is as follows, and cylinder barrel (4) two ends are machined with mounting groove, and this mounting groove is connected with cylinder head (3), cylinder head (9) respectively, is mounted on O RunddichtringO (7) at the connecting portion of two ends；Cylinder head (3) circumference peripheral with cylinder head (9) is bolted connection；Fairlead I (2) it is disposed with in cylinder head (3), connecting rod (1) is through fairlead I (2) and piston (5) and passes through clamp nut (8) and is connected, connecting rod (1), piston (5) are arranged in cylinder barrel (4), and connecting rod (1) left end is connected with the mover of linear electric motors (28)；Annular groove it is machined with for ring installation (6) on piston (5)；The valve seating (10) of intake and exhaust, valve cover (15) it is disposed with at end position in cylinder head (9)；One end of valve cover (15) is disposed with fairlead II (12), and valve (11) passes the centre bore of valve seating (10) and stretches into valve cover (15) from cylinder head (9) one end；Block plate I (13) is from valve cover (15) low order end through valve shaft, and its position is limited by valve cover (15)；Block plate II (16) is arranged in the other end away from head portion that, by limiting its position through the locking nut of valve shaft (17)；Mechanical spring (14) it is disposed with between two block plates；The end of valve shaft contacts with camshaft (20) afterwards through oil baffle disc (16)；The connected mode of opposite side valve is same as described above；Cylinder head (9) is connected formation closed cavity with end cap (21) by fastening bolt, and camshaft installed position between the two is all disposed with bearing shell (19)；Being machined with oil filler point on end cap, shrouding (22) is closed by fastening bolt；
Described closed chamber is filled with the lubricating oil of 4/1sts to five/5th volumes.
The utility model uses free piston expander as the expansion motive power machine in this thermo-electrically reforming unit, mainly includes piston rod, fairlead I, cylinder head, cylinder barrel, piston, piston ring, O RunddichtringO, clamp nut, cylinder head, valve seating, valve, fairlead II, block plate I, mechanical spring, valve cover, block plate II, locking nut, oil baffle disc, bearing shell, camshaft, end cap, shrouding.Cylinder head is connected formation cavity with end cap, can add lubricating oil by oil filler point on end cap, to reduce the abrasion between the parts wherein having relative motion.Leave the air-vent of 4 same sizes in cylinder head, it is to avoid hypertonia in the discharge chambe formed between piston, cylinder head, cylinder barrel in the course of the work, affect the normal work of device.
The utility model uses belt drive unit to control valve actuating mechanism work, mainly includes belt pulley I, belt tensioning mechanism I, belt I, servomotor, belt II, belt tensioning mechanism II, belt pulley II, drive pulley.Driven by servomotor driver pulley rotation, is driven belt pulley I, II of being connected by band therewith to control valve actuating mechanism and normally works.
Compared with existing technical scheme, the utility model has the advantage that
1, the prime mover (free piston expander) in this device is without traditional rotary crank linkage, and compact conformation is simple, volume is little, operate steadily.Prime mover and linear electric motors direct-coupling simultaneously, without the unnecessary parts that are in transmission connection, mechanical loss is little, electromechanical integration degree high, for using the commercial application of the compact car residual neat recovering system of this thermo-electrically reforming unit to provide possibility.
2, the great advantage of this technology is that the lubrication of all Meshing Pair of its prime mover (free piston expander) all uses self-lubricating, eliminate requisite lubricating oil system in existing positive-displacement expansion engine, expand distributed type residual-heat top pressure power generation system the most further utilizes scope, making this device can also be applied to working medium is the band pressure zone temperature fluid that can not be contaminated, such as the step-down electricity generation system of natural gas, various alkane and other hydrofication chemical products.
3, prime mover (free piston expander) uses the distribution control mode redesigned, and response is rapid, reliable, cost is relatively low for it, can the operating frequency of this device of flexible modulation, be entirely capable of meeting free piston expander distribution job requirement.
Accompanying drawing explanation
Fig. 1 is the section of structure of free piston expander；
Fig. 2 is the structural representation of free piston expander-linear electric motors；
In Fig. 1: 1, piston rod；2, fairlead I；3, cylinder head；4, cylinder barrel；5, piston；6, piston ring；7, O RunddichtringO；8, clamp nut；9, cylinder head；10, valve seating；11, valve；12, fairlead II；13, block plate I；14, mechanical spring；15, valve cover；16, block plate II；17, locking nut；18, oil baffle disc；19, bearing shell；20, camshaft；21, end cap；22, shrouding.
In Fig. 2: 23, free piston expander I；24, belt pulley I；25, belt tensioning mechanism I；26, belt I；27, servomotor；28, linear electric motors；29, belt II；30, belt tensioning mechanism II；31, belt pulley II；32, free piston expander II；33, drive pulley；34, cylinder temperature sensor；35, in-cylinder pressure sensor；36, displacement transducer；37, control module.
Detailed description of the invention
The utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the section of structure of free piston expander, and its annexation is as shown in Figure 1.Cylinder barrel (4) two ends are machined with mounting groove, and this mounting groove is connected with cylinder head (3), cylinder head (9) respectively, are mounted on O RunddichtringO (7) at the connecting portion of two ends；Cylinder head (3) circumference peripheral with cylinder head (9) is bolted connection；Fairlead I (2) it is disposed with in cylinder head (3), connecting rod (1) is through fairlead I (2) and piston (5) and passes through clamp nut (8) and is connected, connecting rod (1), piston (5) are arranged in cylinder barrel (4), and connecting rod (1) left end is connected with the mover of linear electric motors (28)；Annular groove it is machined with for ring installation (6) on piston (5)；The valve seating (10) of intake and exhaust, valve cover (15) it is disposed with at end position in cylinder head (9)；One end of valve cover (15) is disposed with fairlead II (12), and valve (11) passes the centre bore of valve seating (10) and stretches into valve cover (15) from cylinder head (9) one end；Block plate I (13) is from valve cover (15) low order end through valve shaft, and its position is limited by valve cover (15)；Block plate II (16) is arranged in the other end away from head portion that, by limiting its position through the locking nut of valve shaft (17)；Mechanical spring (14) it is disposed with between two block plates；The end of valve shaft contacts with camshaft (20) afterwards through oil baffle disc (18)；The connected mode of opposite side valve is same as described above；Cylinder head (9) is connected formation closed cavity with end cap (21) by fastening bolt, and camshaft installed position between the two is all disposed with bearing shell (19)；Being machined with oil filler point on end cap, shrouding (22) is closed by fastening bolt；Before plant running, above-mentioned closed chamber is filled with the lubricating oil of 4/1sts to five/5th volumes, along with lubrication is played in the motion of camshaft and prevents the effect splashed.
Fig. 2 is the structural representation of free piston expander-linear electric motors, and its annexation is as shown in Figure 2.This device is mainly made up of free piston expander I, free piston expander II, linear electric motors and transmission device；Free piston expander I (23) and free piston expander II (32) is arranged symmetrically in linear electric motors (28) both sides；Free piston expander I (23), the connecting rod (1) of free piston expander II (32) are connected by flexible adapter with the mover of linear electric motors (28) respectively；Camshaft (20) output of free piston expander I (23) is connected by flat key with belt pulley I (24)；Drive pulley (33) and servomotor (27) output shaft are connected by flat key and are arranged in the centre of whole device, and the wiring of servomotor is connected with control module (37)；Belt pulley I (24) is connected by driving belt (26) with drive pulley (33)；For preventing from occurring that belt creep phenomenon affects device and normally works in the course of the work, the intermediate arrangement at driving belt has strainer (25), can be according to practical operation situation Reasonable adjustment driving belt degree of tightness；The transmission arrangments mode of the free piston expander of opposite side is same as described above；Being disposed with cylinder temperature sensor (34), in-cylinder pressure sensor (35) on the cylinder barrel of both sides, sensor terminals is connected with control module (37)；Being disposed with displacement transducer (36) on the connecting rod (1) of free piston expander, the terminals of displacement transducer (36) are connected with control module (37).
Operation principle below in conjunction with accompanying drawing detailed description free piston expander-linear electric motors:
During device work, servomotor (27) drives the drive pulley (33) being attached thereto to rotate, the belt pulley I (24) and the belt pulley II (31) that are attached thereto by belt transmission drive both sides are rotated simultaneously, and valve actuating mechanism is started working.During camshaft (20) rotates, when its cam lobe part contacts with valve (11) shaft end, promote valve (11), locking nut (17), block plate II (16) axially simultaneously direction motion in cylinder barrel (4), compressor mechanical spring (14) further, head portion that pushes away valve seating (10) makes cylinder interior communicate with the external world.After the summit of cam lobe part turns over valve shaft end, the thrust of valve (11) is gradually reduced by it, and valve (11) is under the effect of mechanical spring (14) restoring force, and aperture is gradually reduced, until closing.
According to the working law of free piston expander-linear electric motors, when camshaft (20), both sides are installed, it is provided with the phase difference of 180 °.While the IO Intake Valve Opens (exhaust valve closing) of free piston expander I (23), the exhauxt valve opens (IC Intake Valve Closes) of free piston expander II (32), promotes piston-mover group to move right in the cylinder of HTHP working substance steam inflow free piston expander I (23).When the piston of free piston expander II (32) arrives actually dead-centre position, its inlet valve opens (exhaust valve closing), working substance steam flows into free piston expander II (32), the meanwhile IC Intake Valve Closes of free piston expander I (23), exhaust valve is opened, piston-mover group to left movement, until the piston of free piston expander I (23) arrives actually stop, completes a working cycles under the effect of pressure reduction.In the process, by electric machine controller, linear electric motors (28) are adjusted to generator mode, electric mover does linear reciprocating motion together with free piston expander piston is under the effect of both sides pressure reduction, cutting magnetic induction coil is produced electric energy and is collected by energy storage device, it is achieved thermo-electrically converts.In the device course of work, the signal detected is fed back to control module (37) by cylinder temperature sensor (34), in-cylinder pressure sensor (35) and displacement transducer (36) in time, the operating frequency of free piston expander-linear electric motors can be controlled, to ensure that device is properly functioning by the rotating speed of regulation servomotor (27).
Claims (4)
1. one kind can be used for the thermo-electrically reforming unit that vehicular engine waste heat from tail gas reclaims, it is characterised in that: this device is mainly made up of free piston expander I (23), free piston expander II (32), linear electric motors and transmission device；Free piston expander I (23) and free piston expander II (32) is arranged symmetrically in linear electric motors (28) both sides；The connecting rod (1) of free piston expander I (23) and free piston expander II (32) is connected by flexible adapter with the mover of linear electric motors (28) respectively；Camshaft (20) output of free piston expander I (23) is connected by flat key with belt pulley I (24)；Drive pulley (33) and servomotor (27) output shaft are connected by flat key and are arranged in the centre of whole device, and the wiring of servomotor is connected with control module (37)；Belt pulley I (24) is connected by driving belt (26) with drive pulley (33)；The intermediate arrangement of driving belt (26) has strainer (25)；The transmission arrangments mode of the free piston expander II (32) of opposite side is identical with free piston expander I (23).
A kind of thermo-electrically reforming unit that can be used for the recovery of vehicular engine waste heat from tail gas the most according to claim 1, it is characterized in that: be disposed with cylinder temperature sensor (34), in-cylinder pressure sensor (35) on the cylinder barrel (4) of both sides free piston expander, cylinder temperature sensor (34), the terminals of in-cylinder pressure sensor (35) are connected with control module (37)；Being disposed with displacement transducer (36) on the connecting rod (1) of free piston expander, the terminals of displacement transducer (36) are connected with control module (37).
A kind of thermo-electrically reforming unit that can be used for the recovery of vehicular engine waste heat from tail gas the most according to claim 1, it is characterized in that: free piston expander structure is as follows, cylinder barrel (4) two ends are machined with mounting groove, this mounting groove is connected with cylinder head (3), cylinder head (9) respectively, is mounted on O RunddichtringO (7) at the connecting portion of two ends；Cylinder head (3) circumference peripheral with cylinder head (9) is bolted connection；Fairlead I (2) it is disposed with in cylinder head (3), connecting rod (1) is through fairlead I (2) and piston (5) and passes through clamp nut (8) and is connected, connecting rod (1), piston (5) are arranged in cylinder barrel (4), and connecting rod (1) left end is connected with the mover of linear electric motors (28)；Annular groove it is machined with for ring installation (6) on piston (5)；The valve seating (10) of intake and exhaust, valve cover (15) it is disposed with at end position in cylinder head (9)；One end of valve cover (15) is disposed with fairlead II (12), and valve (11) passes the centre bore of valve seating (10) and stretches into valve cover (15) from cylinder head (9) one end；Block plate I (13) is from valve cover (15) low order end through valve shaft, and its position is limited by valve cover (15)；Block plate II (16) is arranged in the other end away from head portion that, by limiting its position through the locking nut of valve shaft (17)；Mechanical spring (14) it is disposed with between two block plates；The end of valve shaft contacts with camshaft (20) afterwards through oil baffle disc (18)；The connected mode of opposite side valve is same as described above；Cylinder head (9) is connected formation closed cavity with end cap (21) by fastening bolt, and camshaft installed position between the two is all disposed with bearing shell (19)；Being machined with oil filler point on end cap, shrouding (22) is closed by fastening bolt.
A kind of thermo-electrically reforming unit that can be used for the recovery of vehicular engine waste heat from tail gas the most according to claim 3, it is characterised in that: described closed chamber is filled with the lubricating oil of 4/1sts to five/5th volumes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031944.1U CN205422978U (en) | 2015-12-13 | 2015-12-13 | Heat - electrotransformation device that can be used to vehicle engine tail gas waste heat recovery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521031944.1U CN205422978U (en) | 2015-12-13 | 2015-12-13 | Heat - electrotransformation device that can be used to vehicle engine tail gas waste heat recovery |
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| Publication Number | Publication Date |
|---|---|
| CN205422978U true CN205422978U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521031944.1U Expired - Fee Related CN205422978U (en) | 2015-12-13 | 2015-12-13 | Heat - electrotransformation device that can be used to vehicle engine tail gas waste heat recovery |
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| Country | Link |
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| CN (1) | CN205422978U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882309A (en) * | 2019-03-05 | 2019-06-14 | 廖红林 | A kind of waste heat efficient temperature-difference generator |
| CN110327738A (en) * | 2019-07-29 | 2019-10-15 | 中科新天地（合肥）环保科技有限公司 | Zeolite runner Adsorption Concentration RTO cooperating with low-temperature plasma waste gas treatment process |
| CN110848208A (en) * | 2019-12-02 | 2020-02-28 | 内蒙古科技大学 | Pneumatic integrated system based on exhaust recovery and control method thereof |
| CN113266464A (en) * | 2021-06-21 | 2021-08-17 | 北京理工大学 | Free piston internal combustion linear generator operation system and operation control method |
-
2015
- 2015-12-13 CN CN201521031944.1U patent/CN205422978U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109882309A (en) * | 2019-03-05 | 2019-06-14 | 廖红林 | A kind of waste heat efficient temperature-difference generator |
| CN110327738A (en) * | 2019-07-29 | 2019-10-15 | 中科新天地（合肥）环保科技有限公司 | Zeolite runner Adsorption Concentration RTO cooperating with low-temperature plasma waste gas treatment process |
| CN110848208A (en) * | 2019-12-02 | 2020-02-28 | 内蒙古科技大学 | Pneumatic integrated system based on exhaust recovery and control method thereof |
| CN110848208B (en) * | 2019-12-02 | 2021-11-23 | 内蒙古科技大学 | Pneumatic integrated system based on exhaust recovery and control method thereof |
| CN113266464A (en) * | 2021-06-21 | 2021-08-17 | 北京理工大学 | Free piston internal combustion linear generator operation system and operation control method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160803 Termination date: 20181213 |