CN202493340U - Hydraulic high-speed free piston linear generator - Google Patents
Hydraulic high-speed free piston linear generator Download PDFInfo
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- CN202493340U CN202493340U CN2011205337831U CN201120533783U CN202493340U CN 202493340 U CN202493340 U CN 202493340U CN 2011205337831 U CN2011205337831 U CN 2011205337831U CN 201120533783 U CN201120533783 U CN 201120533783U CN 202493340 U CN202493340 U CN 202493340U
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Abstract
The utility model relates to a hydraulic high-speed free piston linear generator, which belongs to the technical field of energy source power. The hydraulic high-speed free piston linear generator comprises a free piston internal combustion engine, a hydraulic transmission mechanism and a linear generator. The hydraulic transmission mechanism comprises: a first hydraulic piston, a first hydraulic chamber, a first hydraulic pump, a high pressure oil tube, a second hydraulic cavity, a second hydraulic piston, and a second hydraulic pump; wherein the first hydraulic piston is arranged in the first hydraulic pump; the second hydraulic piston is arranged in the second hydraulic pump; the first hydraulic pump is communicated with the second hydraulic pump by the high pressure oil tube to form the hydraulic transmission mechanism; two free pistons of the internal combustion engine are connected with the first hydraulic piston by a connection rod to form a piston assembly, and a mover of the linear generator is connected with the second hydraulic piston by the other connection rod. The hydraulic transmission mechanism is used, the cutting speed of the mover of the engine is increased, the working efficiency is increased, and compared with the movement speed of the piston, the speed of the mover of the engine is increased by n times.
Description
Technical field
The utility model relates to a kind of hydraulic type 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, Li Qingfeng, and Xiao advances; Huang Zhen. free piston IC generator simulation study [J]. Chinese mechanical engineering, 2009,20 (8): 911-916. is owing to receive the restriction of internal-combustion engine technology; The movement velocity of internal combustion engine is lower at present; Caused linear electric generator mover speed also lower, mean velocity is no more than 15m/s usually, and energy conversion efficiency is also not too high; Therefore can not satisfy the requirement of high-speed straight-line generator, reduce 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 hydraulic type high speed free piston linear generator.
The purpose of the utility model realizes through following technical proposals.
A kind of hydraulic type high speed free-piston internal-combustion linear generator of the utility model, it mainly comprises free piston internal combustion engine, fluid drive mechanism and linear electric generator.Free piston internal combustion engine comprises: cylinder, piston, intake valve, exhaust valve, oil sprayer, air-exhausting air-entering controller; Fluid drive mechanism comprises: first hydraulic piston, first hydraulic pressure cavity, first oil hydraulic pump, high-pressure oil pipe, second hydraulic pressure cavity, second hydraulic piston, second oil hydraulic pump; Linear electric generator comprises: electric mover, motor stator;
Its annexation is: first hydraulic piston places within first oil hydraulic pump; Second hydraulic piston places within second oil hydraulic pump; First oil hydraulic pump is communicated with the formation fluid drive mechanism through high-pressure oil pipe with second oil hydraulic pump; Two free-pistons of internal-combustion engine form a piston assembly through the connecting rod and first hydraulic piston, and the mover of linear electric generator is connected with second hydraulic piston through another connecting rod.
A kind of hydraulic type high speed free piston linear generator of the utility model, its working procedure comprises cold machine start-up course and running; In cold machine start-up course, linear electric motor are operated under the electric motor mode; In running, linear electric motor are operated under the generator mode, and piston assembly is to-and-fro motion in cylinder of internal-combustion engine, drive the electric mover cutting magnetic induction line through the liquid driving mechanism, produce electric energy output; Its detailed operation process is respectively:
1) cold machine start-up course.This device is by means of the external force of motor, and electric mover drives second hydraulic piston and carries out straight line motion, because fluid drive mechanism links to each other with electric mover; First hydraulic piston also can be along with connecting rod be done straight line motion, and this moment, internal-combustion engine wherein was in compression stroke in the cylinder, 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, and the combustion gas pressure of explosion that the high pressure fuel burning produces promotes piston and moves to lower dead center, does work, and through fluid drive mechanism, makes the electric mover cutting magnetic induction line, produces electric energy output.The speed of electric mover improves n doubly (diameter of the diameter of n=first hydraulic piston/second hydraulic piston) than piston movement speed.
Beneficial effect
1, a kind of hydraulic type high speed free piston linear generator of the utility model; Adopted fluid drive mechanism; Thereby improved electric mover cutting speed, increased working efficiency, the speed of electric mover improves n doubly (diameter of the diameter of n=first hydraulic piston/second hydraulic piston) than piston movement speed.
2, as the driving mechanism of critical component, mainly being made up of mekydro and hydraulic pressure cavity, 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's a structural representation;
Among the figure, 1-cylinder, 2-piston, 3-intake valve, 4-exhaust valve, 5-oil sprayer, 6-air-exhausting air-entering controller, 7-first hydraulic piston, 8-first hydraulic pressure cavity, 9-first oil hydraulic pump, 10-high-pressure oil pipe, 11-second hydraulic pressure cavity, 12-second hydraulic piston, 13-second oil hydraulic pump, 14-electric mover, 15-motor stator;
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Embodiment 1
A kind of hydraulic type high speed free-piston internal-combustion linear generator of the utility model, it mainly comprises free piston internal combustion engine, fluid drive mechanism and linear electric generator.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; Fluid drive mechanism comprises: first hydraulic piston 7, first hydraulic pressure cavity 8, first oil hydraulic pump 9, high-pressure oil pipe 10, second hydraulic pressure cavity 11, second hydraulic piston 12, second oil hydraulic pump 13; Linear electric generator comprises: electric mover 14, motor stator 15;
First hydraulic piston 7 places within first oil hydraulic pump 9; Second hydraulic piston 12 places within second oil hydraulic pump 13; First oil hydraulic pump 9 is communicated with the formation fluid drive mechanism through high-pressure oil pipe 10 with second oil hydraulic pump 13; Two free-pistons of internal-combustion engine form a piston assembly through the connecting rod and first hydraulic piston 7, and the mover 14 of linear electric generator is connected with second hydraulic piston 12 through another connecting rod.The diameter ratio of the diameter of first hydraulic piston 7 and second hydraulic piston 12 is 3.
1) cold machine start-up course.This device is by means of the external force of motor, and electric mover 14 drives second hydraulic piston 12 and carries out straight line motion, because fluid drive mechanism links to each other with electric mover 14; First hydraulic piston 7 also can be along with connecting rod be done straight line motion, is in compression stroke in this moment cylinder of internal-combustion engine 1, and the air in the compression cylinder is to top dead center; When piston 2 moved to top dead center, the oil sprayer 5 that is installed in cylinder head ejected high pressure fuel, and is compressed burning; Produce high-pressure gas; Promote piston 2 to the lower dead center operation, 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, and the combustion gas pressure of explosion that the high pressure fuel burning produces promotes piston and moves to lower dead center, does work, and through fluid drive mechanism, makes electric mover 14 cutting magnetic induction lines, produces electric energy output.The speed of electric mover improves 3 times than piston movement speed.
Claims (1)
1. a hydraulic type high speed free-piston internal-combustion linear generator mainly comprises free piston internal combustion engine, linear electric generator, it is characterized in that it also comprises fluid drive mechanism; 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); Fluid drive mechanism comprises: first hydraulic piston (7), first hydraulic pressure cavity (8), first oil hydraulic pump (9), high-pressure oil pipe (10), second hydraulic pressure cavity (11), second hydraulic piston (12), second oil hydraulic pump (13); Linear electric generator comprises: electric mover (14), motor stator (15); Its annexation is: first hydraulic piston (7) places within first oil hydraulic pump (9); Second hydraulic piston (12) places within second oil hydraulic pump (13); First oil hydraulic pump (9) is communicated with the formation fluid drive mechanism through high-pressure oil pipe (10) with second oil hydraulic pump (13); Two free-pistons of internal-combustion engine form a piston assembly through connecting rod and first hydraulic piston (7), and the mover of linear electric generator (14) is connected with second hydraulic piston (12) through another connecting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205337831U CN202493340U (en) | 2011-12-19 | 2011-12-19 | Hydraulic high-speed free piston linear generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205337831U CN202493340U (en) | 2011-12-19 | 2011-12-19 | Hydraulic high-speed free piston linear generator |
Publications (1)
| Publication Number | Publication Date |
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| CN202493340U true CN202493340U (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205337831U Expired - Fee Related CN202493340U (en) | 2011-12-19 | 2011-12-19 | Hydraulic high-speed free piston linear generator |
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| CN (1) | CN202493340U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632375A (en) * | 2015-02-03 | 2015-05-20 | 北京理工大学 | Double-stator permanent magnet linear generator |
| CN113047948A (en) * | 2021-03-12 | 2021-06-29 | 哈尔滨工程大学 | Novel circulating free piston generator based on rigid connection |
-
2011
- 2011-12-19 CN CN2011205337831U patent/CN202493340U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632375A (en) * | 2015-02-03 | 2015-05-20 | 北京理工大学 | Double-stator permanent magnet linear generator |
| CN104632375B (en) * | 2015-02-03 | 2017-02-22 | 北京理工大学 | Double-stator permanent magnet linear generator |
| CN113047948A (en) * | 2021-03-12 | 2021-06-29 | 哈尔滨工程大学 | Novel circulating free piston generator based on rigid connection |
| CN113047948B (en) * | 2021-03-12 | 2022-08-05 | 哈尔滨工程大学 | Free piston generator based on rigid connection |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20121017 Termination date: 20121219 |