CN202596887U - High-speed free piston linear generator - Google Patents
High-speed free piston linear generator Download PDFInfo
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- CN202596887U CN202596887U CN 201120533777 CN201120533777U CN202596887U CN 202596887 U CN202596887 U CN 202596887U CN 201120533777 CN201120533777 CN 201120533777 CN 201120533777 U CN201120533777 U CN 201120533777U CN 202596887 U CN202596887 U CN 202596887U
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Abstract
The utility model relates to a high-speed free piston linear generator and belongs to the field of energy power. The high-speed free piston linear generator mainly comprises a free piston internal combustion engine, a gear transmission mechanism and a linear generator, wherein the gear transmission mechanism is formed by coaxially connecting two gears; two free pistons of the internal combustion engine are fixedly connected with each other through a rack-type connecting rod to form a piston component; and a rack on the piston component is connected with a rotor of the linear generator through the matched gear transmission mechanism. Alternative internal combustion of two cylinders of the internal combustion engine push the pistons to do linear motion; the pistons are connected with the motor rotor through the gear transmission mechanism with a function of increasing the speed, so that the linear motion speed of the motor rotor is finally increased by using gas explosion pressure produced by combustion of each cylinder of the internal combustion engine through the connecting rod and the transmission mechanism. In the high-speed free piston linear generator, the gear transmission mechanism is adopted, so that the cutting speed of the motor rotor is increased and the working efficiency is improved, and the speed of the motor rotor is improved by n times compared with the motion speed of the pistons.
Description
Technical field
The utility model relates to a kind of Energy Project mechanical device, is specifically related to a kind of high speed free piston linear generator, belongs to the energy source and power field.
Background technique
The general structure of existing internal combustion engine generator is that reciprocating internal combustion engine is passed through connecting rod and linked to each other with electric rotating machine; Comprise two types of thermodynamic cycle modes of two-stroke and four-stroke; Its shortcoming is that complex structure, volume are big, the thermal efficiency is low, and tail gas discharging pollutant is more.Particularly because the straight line motion of piston can't directly be realized rotating power output; So change by connecting rod; Traditional bent axle mainly is made up of crank, crank throw and crank pin, and its main feature is the ladder shaft part, and piston set can not obtain balance completely because of reciprocal inertia force and the moment of inertia that to-and-fro motion causes in the working procedure; The vibration and noise problem that causes thus becomes increasingly conspicuous, and has had a strong impact on the development of internal combustion engine generator.
In recent years, people are being devoted to seek a kind of energy conversion efficiency height always, and vibration noise small piston formula internal combustion engine generator in the hope of solving variety of issue above-mentioned, has been done number of research projects for this reason.Wherein, the free piston IC linear generating set is a kind of novel energy conversion equipment that forms after the coupling of free piston IC engine and linear electric generator, at present by model utility; And some research institutions have launched research to it, can be referring to Li Qingfeng, and Xiao advances; Huang Zhen. free piston IC generator simulation study [J]. Chinese mechanical engineering, 2009,20 (8): 911-916; But the internal-combustion linear electricity generating device of research is mainly by free-piston engine and the direct-coupled mode of linear electric generator at present; Owing to receive the restriction of internal-combustion engine technology, the movement velocity of internal combustion engine is lower at present, has caused linear electric generator mover speed also lower; Usually mean velocity is no more than 15m/s; Energy conversion efficiency is also not too high, therefore can not satisfy the requirement of high-speed straight-line generator, has reduced the using scope of internal combustion engine generator virtually.In addition, because space rate is lower, under the prerequisite of equal-wattage, linear electric generator needs bigger volume could satisfy the requirement of power, therefore owing to the restriction of speed, has reduced the specific volume power of internal combustion engine generator.
The model utility content
The purpose of the utility model is in order to solve the lower problem of generator mover speed in the existing technology, thereby has proposed a kind of high speed free piston linear generator.
The purpose of the utility model realizes through following technical proposals.
A kind of high speed free-piston internal-combustion linear generator of the utility model, it mainly comprises free piston internal combustion engine, gear drive, linear electric generator and tooth bar connecting rod; Free piston internal combustion engine comprises: cylinder, piston, intake valve, exhaust valve, oil sprayer, air-exhausting air-entering controller; Gear drive comprises: first gear, axle, second gear, and first gear is connected with second gear is coaxial; Linear electric generator comprises: electric mover, motor stator.
Its annexation is: two free-pistons of free piston internal combustion engine are connected through the tooth bar connecting rod and form a piston assembly, and the tooth bar on the piston assembly is connected with the mover of linear electric generator through the gear drive of coupling.
Its working procedure is:
1) cold machine start-up course.Linear electric motor are operated under the electric motor mode at this moment, and by means of the external force of motor, electric mover driven gear driving mechanism rotates; Because gear drive links to each other with the engagement of tooth bar connecting rod, the piston in the cylinder also can be done straight line motion with the tooth bar connecting rod, and be in compression stroke in one of them cylinder of internal-combustion engine this moment; Air in the compression cylinder is to top dead center, and when piston motion to top dead center, the oil sprayer that is installed in cylinder head ejects high pressure fuel; And be compressed burning, and produce high-pressure gas, promote piston and move to lower dead center; Begin external work done, cold machine start-up course is accomplished;
2) running.Two cylinder interior of free piston internal combustion engine are explosive combustion in turn respectively, promotes piston assembly and carries out straight line motion.Piston is when top dead center; The combustion gas pressure of explosion that the high pressure fuel burning produces promotes piston and moves to lower dead center, does work, and promotes gear drive through the tooth bar connecting rod; Make the electric mover cutting magnetic induction line that is connected with a joggle with gear drive, produce electric energy output.The speed of electric mover improves n doubly (diameter of the diameter of n=second gear/first gear) than piston movement speed.
Beneficial effect
1, a kind of high speed free piston linear generator of the utility model; Adopted gear drive; Thereby improved electric mover cutting speed, increased working efficiency, the speed of electric mover improves n doubly (diameter of the diameter of n=second gear/first gear) than piston movement speed.
2, as the driving mechanism of critical component, mainly being made up of gear and tooth bar, is mature technology, and reliability is high, makes easy to processly, and cost is low, and is convenient to realize standardization and commercialization.
Description of drawings
Fig. 1 is embodiment 1 a sectional view;
Among the figure, 1-cylinder, 2-piston, 3-intake valve, 4-exhaust valve, 5-oil sprayer, 6-air-exhausting air-entering controller, 7-tooth bar connecting rod, 8-first gear, 9-axle, 10-second gear, 11-electric mover, 12-motor stator.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Embodiment 1
A kind of high speed free-piston internal-combustion linear generator of the utility model, it mainly comprises free piston internal combustion engine, gear drive, linear electric generator and tooth bar connecting rod 7; Free piston internal combustion engine comprises: cylinder 1, piston 2, intake valve 3, exhaust valve 4, oil sprayer 5, air-exhausting air-entering controller 6; Gear drive comprises: first gear 8, axle 9, second gear 10, the first gears 8 and second gear 10 are through 9 coaxial a connection; Linear electric generator comprises: electric mover 11, motor stator 12, and as shown in Figure 1;
Its annexation is: two free-pistons of free piston internal combustion engine form a piston assembly through being connected, the tooth bar connecting rod 7 on the piston assembly is connected with the mover of linear electric generator through the gear drive of coupling.The diameter ratio of the diameter of second gear 10 and first gear 8 is 2.
Its working procedure is:
1) cold machine start-up course.Linear electric motor are operated under the electric motor mode at this moment.By means of the external force of motor, electric mover 11 driven gear driving mechanisms rotate, because gear drive links to each other with 7 engagements of tooth bar connecting rod; Piston in the cylinder also can be done straight line motion with tooth bar connecting rod 7, and be in compression stroke in one of them cylinder of internal-combustion engine this moment, and the air in the compression cylinder is to top dead center; When piston motion to top dead center, the oil sprayer that is installed in cylinder head ejects high pressure fuel, and is compressed burning; Produce high-pressure gas; Promote piston and move to lower dead center, begin external work done, cold machine start-up course is accomplished;
2) running.Two cylinder interior of free piston internal combustion engine are explosive combustion in turn respectively, promotes piston assembly and carries out straight line motion.Piston is when top dead center; The combustion gas pressure of explosion that the high pressure fuel burning produces promotes piston and moves to lower dead center, does work, and promotes gear drive through tooth bar connecting rod 7; Make electric mover 11 cutting magnetic induction lines that are connected with a joggle with gear drive, produce electric energy output.The speed of electric mover improves 2 times than piston movement speed.
Claims (1)
1. high speed free piston linear generator, it mainly comprises free piston internal combustion engine and linear electric generator, it is characterized in that: it also comprises gear drive and tooth bar connecting rod (7); Free piston internal combustion engine comprises: cylinder (1), piston (2), intake valve (3), exhaust valve (4), oil sprayer (5), air-exhausting air-entering controller (6); Gear drive comprises: first gear (8), axle (9), second gear (10), and first gear (8) and second gear (10) are connected through spool (9) are coaxial; Linear electric generator comprises: electric mover (11), motor stator (12); Its annexation is: two free-pistons of free piston internal combustion engine are connected through tooth bar connecting rod (7) and form a piston assembly, and the tooth bar connecting rod (7) on the piston assembly is connected with the mover of linear electric generator through the gear drive of coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120533777 CN202596887U (en) | 2011-12-19 | 2011-12-19 | High-speed free piston linear generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120533777 CN202596887U (en) | 2011-12-19 | 2011-12-19 | High-speed free piston linear generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202596887U true CN202596887U (en) | 2012-12-12 |
Family
ID=47314434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120533777 Expired - Fee Related CN202596887U (en) | 2011-12-19 | 2011-12-19 | High-speed free piston linear generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202596887U (en) |
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2011
- 2011-12-19 CN CN 201120533777 patent/CN202596887U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20131219 |