CN202810945U - Piston expansion engine system in single valve structure - Google Patents
Piston expansion engine system in single valve structure Download PDFInfo
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- CN202810945U CN202810945U CN 201220516106 CN201220516106U CN202810945U CN 202810945 U CN202810945 U CN 202810945U CN 201220516106 CN201220516106 CN 201220516106 CN 201220516106 U CN201220516106 U CN 201220516106U CN 202810945 U CN202810945 U CN 202810945U
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Abstract
The utility model discloses a piston expansion engine system in a single valve structure. The piston expansion engine system mainly comprises an air cylinder and a piston system, air inlet and exhaust systems in various levels, a crankshaft and connecting rod transmission system and a reheating system. An air inlet in each level of a piston expansion engine is in the single valve structure. When a piston moves to a position close to an upper stop point, an air inlet valve is opened, air goes into an air cylinder, and then the piston goes downwards, after certain time, the air inlet valve is closed, when the piston moves to a position close to a lower stop point, an exhaust valve is opened, air is exhausted from the air cylinder, and then the air cylinder goes upwards, after certain time, the exhaust valve is closed, the piston continue going upwards, the residual air in the air cylinder is pressed until the air inlet valve is opened, and next cycle is started. Connecting rods of expansion engines in various levels share one crankshaft, the multi-level piston expansion engine has the advantages of being high in expansion ratio and efficiency, simple and compact in structure, high in operation reliability, environment-friendly, capable of recycling middle-low-temperature (heat value) waste heat and the like.
Description
Technical field
The utility model relates to the again Multi-stage piston type expander system of the single valve structure of hot merit energy of a kind of Multi-stage piston type expander system, particularly a kind of band.
Background technique
Current traditional various power equipments such as distributed power source, mobile power etc., have consumed a large amount of consumption of fossil fuels on the one hand, and its exhaust emissions has caused a series of environmental pollution problem on the other hand, arouses widespread concern.In the urgent need to researching and developing low pollution/pollution-free, efficient power system.
The researcher is arranged by transforming traditional internal-combustion engine, proposed based on compressed-air actuated piston expansion engine.The oil supply system of internal-combustion engine is removed by this system, transforms inlet and exhaust valve and intake and exhaust cam etc., utilizes high-pressure air source to be the decompressor air feed, is converted into the shaft work of decompressor.The data of announcing shows that this decompressor is single level system, has the double-valve structure of inlet and outlet, and its structure is comparatively complicated, and there is certain sealing hard problem in running parameter lower (working pressure, temperature etc.), and efficiency of expander is lower.Single valve structure decompressor only has a suction valve, is positioned at the top of cylinder, and outlet valve is positioned near the lower dead center of piston, does not need special control mechanism to realize that it closes, and has characteristics simple in structure.
For alleviating power consumption and the pollution problem in current power field, in the urgent need to efficient, environmental friendliness and be applicable to distributed energy and the piston expansion engine system of the single valve structure in mobile power field.
Summary of the invention
Shortcoming and defect for prior art, the utility model discloses a kind of Multi-stage piston type expander system, the again Multi-stage piston type expander system of the single valve structure of heat of novel band, purpose provide a kind of simple in structure, compact, efficient is high, reliable, operating cost is low, expansion ratio is high, environmental friendliness, can utilize in the Multi-stage piston type expander system of single valve structure of lower calorific value.
For achieving the above object, technical solution of the present utility model is:
A kind of piston expansion engine system of single valve structure, comprise multiple expansion engine, every one-level decompressor comprises: cylinder and piston mechanism, air intake structure, exhaust structure, connecting rod and Crankshaft motion system, it is characterized in that, described cylinder and piston mechanism comprises cylinder, places the piston of cylinder, the sidewall of described cylinder is provided with some exhaust valves, and the skirt section of described piston is provided with piston ring; The air inlet valve body that described air intake structure comprises air-inlet cavity and is placed in one, described air-inlet cavity is arranged at the top of cylinder, and its sidewall is provided with suction port, bottom and cylinder intake valve UNICOM, described suction valve body and function is to control the switching of described intake valve; Described exhaust structure comprises the exhaust cavity that places cylinder outer wall, and described exhaust cavity is by described exhaust valve and cylinder UNICOM, and the sidewall of exhaust cavity is provided with relief opening; Described connecting rod and Crankshaft motion system comprise connecting rod, bent axle, and described connecting rod one end is connected with piston, and the other end is connected with bent axle; Described multiple expansion engine is connected on the same bent axle, wherein, the suction port of first order decompressor is by pipeline and high pressurized gas UNICOM, the suction port of the relief opening of upper level decompressor and next stage decompressor is by pipeline UNICOM, in the admission line of first order decompressor, and adjacent double expansion machine between ventilation line in be equipped with again hot equipment.
The progression of described piston expansion engine system is 2 ~ 8 grades, and what of progression are determined by the required expansion ratio size of finishing of energy conversion system.At different levelsly share bent axles, the output shaft work, at different levels have an identical rotational speed.Multiple arrangement is arranged between at different levels: a) shaft axis of each cylinder is positioned on the same plane, places homonymy or the both sides of bent axle; B) cylinder shaft axiss at different levels are the capable layout of V; C) cylinder shaft axis W types at different levels are arranged; D) cylinder shaft axiss at different levels are double V-shaped layout; E) cylinder at different levels axle center is evenly arranged around bent axle is star-like.
Piston expansion engine of the present utility model system, its every one-level is the single valve structure, all has certain surge volume to be called air-inlet cavity and exhaust cavity near the inlet and outlet door of cylinder.When piston stroking upward near top dead center near the time, inlet open, the air inlet of this grade decompressor, descent of piston is to certain position, suction valve cuts out.The inblock cylinder valve is positioned near the cylinder lower dead center, and the exhaust valve aperture distributes along the cylinder even circumferential; When descent of piston near the lower dead center time, exhauxt valve opens, cylinder exhaust enters exhaust cavity; When piston is up to certain position from lower dead center, exhaust valve closure.Gas in the exhaust cavity enters the next stage expander cycle through exhaust valve.
After the pressurized gas through heating enter in the cylinder, the driven plunger motion, the kinetic energy of piston is converted into the shaft work output of bent axle by linkage mechanism.
The flow process of piston expansion engine of the present utility model system is:
Pressurized gas process re-heating subsystem, absorbing heat, the gas of heated this high pressure enters the air-inlet cavity of the decompressor first order, and piston element goes upward to the cylinder top dead center during near the moment, and inlet open is heated pressurized gas and enters cylinder interior.Piston is descending from top dead center, and through after the regular hour, suction valve cuts out, and enters the gas driven piston motion of the high pressure of cylinder interior, and the kinetic energy of piston is by connecting rod and crank mechanism output shaft work.When descent of piston during near bottom dead center position, the inblock cylinder valve is opened, and the gas that expands through this grade decompressor enters exhaust cavity.Then piston moves from lower dead center to the top dead center direction, the gas in the compression cylinder, until inlet open, beginning intake process, decompressor at the corresponding levels enter next circulation.Enter the next stage expander cycle through relief opening behind the air in the exhaust cavity.
Described piston expansion engine system, there is an air-inlet cavity in every one-level.Pressurized gas in the air-inlet cavity and inlet valve spring acting in conjunction are on suction valve, for suction valve provides pretightening force.There is an exhaust cavity in every one-level, and exhaust cavity is positioned at the outer wall of cylinder, with the exhaust valve of cylinder and relief opening UNICOM at the corresponding levels.
Described piston expansion engine system, the cylinder and piston system is the single valve structure, described air inlet valve body comprises orifice plate, suction valve, elastomer, described elastomer is arranged between orifice plate and the suction valve, the unlatching of suction valve can realize by dual mode: a) top of described piston is provided with the piston core bar, described suction valve and piston core bar are positioned on the same axis, and described air inlet valve body and piston core bar cooperatively interact to control the switching of intake valve.During when piston stroking upward and near top dead center position, the piston core bar promotes the suction valve motion, and the gas in the air-inlet cavity enters in the cylinder.When piston when top dead center is descending, suction valve cuts out gradually, intake process finishes; B) also be provided with solenoid valve in the described air-inlet cavity, described suction valve and solenoid valve are positioned on the same axis, and described air inlet valve body and solenoid valve cooperatively interact to control the switching of intake valve.During when piston stroking upward and near top dead center position, the solenoid valve energising that is positioned at suction valve top produces magnetic force, attracts inlet open, and through after the regular hour, magnetic force disappears, and closes at high-pressure air and initial tension of spring effect lower inlet valve, realizes intake process.During actual motion, this dual mode can be chosen one wantonly.Wherein the structural type of suction valve can be needle valve structure, also can select ball shape structure.
Described single piston expansion engine system is provided with pad between described piston core bar and the piston head plane, regulates described piston core bar with respect to the height on piston head plane by described pad.By thickening or the thickness of attenuate pad, the piston core bar increases or reduces, thus core bar contacts with suction valve when regulating near the top dead center the moment and duration, adjusting air inflow quantity.
Described piston expansion engine system, the exhaust valve of cylinder is positioned near the lower dead center of piston, distributes along the cylinder even circumferential.When descent of piston near bottom dead center position the time, exhauxt valve opens, the air in the cylinder enters in the exhaust cavity.The sectional area that changes exhaust valve can be regulated the exhaust performance of decompressor at the corresponding levels.
Described piston expansion engine system, hot equipment can be electric heater again, it also can be heat exchanger, heat exchanger structure is bushing type, shell of pipe type, jacketed type, heat accumulating type, hybrid or immerse coil pipe type, the extraneous thermal source of heat exchanger is fossil energy thermal source, industrial waste heat, waste heat, environment heat, underground heat, solar heat or heat-stored device.
The utility model has the advantage of:
(1) Operational Limits is high, simple and compact for structure, efficient is high, operational reliability is high, environmental friendliness, is applicable to all kinds of gas expansion for doing work, has wide prospect of the application.
(2) this expander system adopts the single valve structure, and system is comparatively simple, compact; This expander system running parameter (temperature, pressure) haves a wide reach, and can work under higher pressure, temperature, realizes the high expansion ratio acting, can reduce the restriction loss of high-pressure air source; Operational reliability is high, the single-stage working procedure of this decompressor and two stroke IC engine work Engineering seemingly, internal-combustion engine technology is ripe, expander system reliability height therefore of the present utility model; Be applicable to all kinds of pressurized gas expansion actings, be included under the condition of high pressure air, nitrogen, oxygen, carbon dioxide, freon, rock gas or water vapour; The thermal source of low temperature in the utilization (calorific value), used heat and waste heat that can the extensive use industrial trade such as cement industry, iron and steel metallurgical industry, chemical industry etc., improve the utilization ratio of the energy.
Description of drawings
Fig. 1 is embodiment's 1 structural representation of piston expansion engine of the present utility model system;
Fig. 2 is embodiment's 2 structural representations of piston expansion engine of the present utility model system;
Fig. 3 is embodiment's 3 structural representations of piston expansion engine of the present utility model system;
Fig. 4 is embodiment's 4 structural representations of piston expansion engine of the present utility model system;
Fig. 5 is the structural representation of two kinds of air inlet valve bodies in the utility model.
Main mark explanation in the accompanying drawing
The A-high pressurized gas; B, the heated gas of D-; C, the gas after the E-one-level expands; 1,1 '-hotter equipment; The 2-air-inlet cavity; The 3-solenoid valve; The 4-air inlet valve lever; The 5-spring; The 6-intake valve; The 7-cylinder; 8-piston core bar; The 9-pad; The 10-piston; The 11-piston ring; The 12-exhaust valve; The 13-exhaust cavity; The 14-connecting rod; The 15-bent axle; The 16-relief opening
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearer, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
The piston expansion engine system of single valve structure of the present utility model adopts the high-pressure air source acting of expanding step by step, until outlet pressure satisfies customer requirements; Inter-stage has again heat engine structure, and low temperature in the utilization (calorific value) thermal source carries out the inter-stage heating.Every one-level piston expansion engine is the single valve structure, finishes intake process near top dead center, behind the gas expansion, finishes exhaust process near lower dead center, and discharging gas enters the next stage expander cycle.Piston kinetic energy is output as shaft work by crankshaft ﹠ connecting.
Fig. 1 is the embodiment's 1 of piston expansion engine of the present utility model system structural representation.Provided 2 grades of decompressor structures among Fig. 1 working principle of the present utility model has been described, shared bent axles 15 at different levels among the figure, cylinder 7 layouts in upright arrangement at different levels, the shaft axis of cylinder 7 is positioned on the same cross section, and each cylinder 7 is positioned at the opposed distribution in the same side or both sides of bent axle 15.During the expander system operation, pressurized gas A is entered in the air-inlet cavity 2 of the expander system first order by extraneous heating plant 1 heating; This moment, effect had the pretightening force of the elastic force conduct of the pressure of pressurized gas and spring 5 on suction valve 4, made suction valve 4 and intake valve 6 be in sealing state; The piston 10 of the first order is up during near top dead center position, and the core bar 8 of piston contacts with suction valve 4, and promotes suction valve 4 and overcome pretightening force and move upward, and the gases in the air-inlet cavity 2 enter cylinder by intake valve 6; Piston 10 is descending by top dead center, and suction valve 4 falls after rise, and intake process finishes; Entering drive of high-pressure gas piston 10 motions of cylinder 7, is shaft work output by connecting rod 14 and bent axle 15 organisation conversions; When piston 10 during near lower dead center exhaust valve 12 open gradually, the gas of ending that expands at the corresponding levels enters exhaust cavity 13 by exhaust valve 12; Piston 10 is up by lower dead center, and exhaust valve 12 cuts out, the residual gas in the compression cylinder 7, and when piston 10 during near top dead center, suction valve 4 is opened, and begins new circulation.Gas in the exhaust cavity 13 is discharged by relief opening 16, and enter an again hot equipment 1 ', then enter the air-inlet cavity 2 of the second level, this moment, the suction valve 4 of the second level was in sealing state with suction port 6 under the effect of gas pressure and spring force, when the piston 10 of the second level goes upward near the top dead center, open suction valve 4, the gas in the air-inlet cavity 2 enters in the cylinder 7, driven plunger 10 motions.Every grade working cycle process and first order process are similar, and to the last one-level gas outlet parameter satisfies customer requirements or near ambient condition, and gas is discharged expander system, finishes an acting process.
Fig. 2 is embodiment 2 the structural representation of the piston expansion engine of single valve structure of the present utility model.Shared bent axles 15 at different levels among the figure, all cylinders 7 are divided into two groups, arrange with certain angle, and the shaft axis of cylinder becomes V-type to distribute from the side, and 15 is the operation circular path of bent axle among the figure.The main structural components of expander system is similar to Example 1.
Embodiment 3
Fig. 3 is embodiment 3 the structural representation of the piston expansion engine of single valve structure of the present utility model.In the present embodiment, this decompressor is at least 3 level structures, has provided the expander system schematic representation of 3 level structures among Fig. 3.The shaft axis of cylinders 7 at different levels becomes star-like even distribution around bent axle, and 15 is the movement locus line of decompressor bent axle among the figure.The main structural components of expander system and embodiment 1,2 similar, difference be when pressurized gas the first order expand finish after, this strand gas passes through again hot equipment 1 ', it can enter in advance other any one cylinder 7 of design, expand and do work in the beginning second level, later its next stage inflation process, to the last one-levels of selecting in this way at different levels.
Fig. 4 is embodiment 4 the structural representation of the piston expansion engine of single valve structure of the present utility model.The main structural components of expander system is similar to Example 1 in the present embodiment, difference is, installed a solenoid valve equipment 3 additional expander system at different levels, realized the unlatching of suction valve 4 by electromagnetic force, the piston core bar 8 that utilizes that has replaced among the embodiment of front promotes suction valve 4.The embodiment of difference is as follows, when piston 10 near beginning top dead center during intake process, solenoid valve 3 energisings, produce electromagnetic force, this electromagnetic force overcomes its pretightening force on suction valve 4, open suction valve 4, realize air inlet, through the regular hour, shut electromagnetic valve 3 power supplies, magnetic force disappears, suction valve 4 playback, intake process finishes.In the present embodiment, the on-off mode of removing suction valve 4 is different from embodiment 1,2,3, and other processes of the work cycle of the every one-level of expander system are identical with embodiment 1.If in embodiment 1,2,3, install equally solenoid valve equipment additional, change the air inlet control mode, present embodiment goes in above-described embodiment equally so, the applicable equally the following examples of present embodiment.
Fig. 5 is two kinds of structural representations of air inlet valve body of the present utility model.The air inlet valve body is the needle type valve structure in above-described embodiment 1,2,3,4, and shown in Fig. 5 a, the air inlet valve body also can be ball-type valve structure, and its structure is shown in Fig. 5 b.
The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of making, is equal to replacement, improvement etc., all should be included within the scope of the present utility model.
Claims (9)
1. the piston expansion engine system of a single valve structure comprises multiple expansion engine, and every one-level decompressor comprises: cylinder and piston mechanism, air intake structure, exhaust structure, connecting rod and Crankshaft motion system is characterized in that:
Described cylinder and piston mechanism comprises cylinder (7), places the piston (10) of cylinder (7), and the sidewall of described cylinder (7) is provided with some exhaust valves (12), and the skirt section of described piston (10) is provided with piston ring (11),
Described air intake structure comprises air-inlet cavity (2) and the air inlet valve body that is placed in one, described air-inlet cavity (2) is arranged at the top of cylinder (7), and its sidewall is provided with suction port, intake valve (6) UNICOM of bottom and cylinder (7), described suction valve body and function is to control the switching of described intake valve (6)
Described exhaust structure comprises the exhaust cavity (13) that places cylinder (7) outer wall, and described exhaust cavity (13) is by described exhaust valve (12) and cylinder (7) UNICOM, and the sidewall of exhaust cavity (13) is provided with relief opening (16),
Described connecting rod and Crankshaft motion system comprise connecting rod (14), bent axle (15), and described connecting rod (14) one ends are connected with piston (10), and the other end is connected with bent axle (15),
Described multiple expansion engine is connected on the same bent axle (15), wherein, the suction port of first order decompressor is by pipeline and high pressurized gas (A) UNICOM, the relief opening of upper level decompressor (16) passes through pipeline UNICOM with the suction port of next stage decompressor, in the admission line of first order decompressor, and adjacent double expansion machine between ventilation line in be equipped with again hot equipment (1,1 ').
2. piston expansion engine as claimed in claim 1 system, it is characterized in that: the top of described piston (10) is provided with piston core bar (8), described air inlet valve body comprises orifice plate, suction valve (4), elastomer (5), described elastomer (5) is arranged between orifice plate and the suction valve (4), described suction valve (4) and piston core bar (8) are positioned on the same axis, and described air inlet valve body and piston core bar (8) cooperatively interact to control the switching of intake valve (6).
3. piston expansion engine as claimed in claim 1 system, it is characterized in that: described air inlet valve body comprises orifice plate, suction valve (4), elastomer (5), described elastomer (5) is arranged between orifice plate and the suction valve (4), also be provided with solenoid valve (3) in the described air-inlet cavity (2), described suction valve (4) and solenoid valve (3) are positioned on the same axis, and described air inlet valve body and solenoid valve (3) cooperatively interact to control the switching of intake valve (6).
4. piston expansion engine system as claimed in claim 2 or claim 3, it is characterized in that: described suction valve (4) is needle valve structure or ball-valve structure.
5. piston expansion engine as claimed in claim 1 system, it is characterized in that: in the described multiple expansion engine, the axle center of each cylinder (7) is positioned on the same plane, is positioned at homonymy or the both sides of bent axle (15).
6. piston expansion engine as claimed in claim 5 system is characterized in that: the axle center of cylinders at different levels (7) is that V capablely arranges, the W type is arranged, the axle center of double V-shaped layout or cylinder at different levels (7) is evenly arranged around bent axle is star-like.
7. piston expansion engine as claimed in claim 2 system, it is characterized in that: be provided with pad (9) between described piston core bar (8) and piston (10) top planes, regulate described piston core bar (8) with respect to the height of piston (10) top planes by described pad (9).
8. piston expansion engine as claimed in claim 1 system, it is characterized in that: described exhaust valve (12) is positioned near the lower dead center of piston (10), distributes along cylinder (7) even circumferential.
9. piston expansion engine according to claim 1 system, it is characterized in that: described hotter equipment (1,1 ') be electric heater, or heat exchanger, heat exchanger structure is bushing type, shell of pipe type, jacketed type, heat accumulating type, hybrid or immerse coil pipe type, and the thermal source of heat exchanger is fossil energy thermal source, industrial waste heat, waste heat, environment heat, underground heat or solar heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516106 CN202810945U (en) | 2012-10-09 | 2012-10-09 | Piston expansion engine system in single valve structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516106 CN202810945U (en) | 2012-10-09 | 2012-10-09 | Piston expansion engine system in single valve structure |
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| CN202810945U true CN202810945U (en) | 2013-03-20 |
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| CN 201220516106 Expired - Lifetime CN202810945U (en) | 2012-10-09 | 2012-10-09 | Piston expansion engine system in single valve structure |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644295A (en) * | 2013-12-15 | 2014-03-19 | 中国科学院工程热物理研究所 | Piston system of single valve expander |
| CN104358593A (en) * | 2014-10-27 | 2015-02-18 | 中国科学院工程热物理研究所 | Single valve expander system capable of realizing isothermal expansion and method |
| CN104454015A (en) * | 2014-10-27 | 2015-03-25 | 中国科学院工程热物理研究所 | Isothermal expansion power system by hydraulic pressure |
| CN105089830A (en) * | 2014-05-06 | 2015-11-25 | 通用汽车环球科技运作有限责任公司 | Powertrain and method of determining residual gas volume |
| CN106499456A (en) * | 2015-09-08 | 2017-03-15 | 熵零股份有限公司 | A kind of external-open charge valve and its electromotor |
| WO2017067118A1 (en) * | 2015-10-20 | 2017-04-27 | 彭学军 | Combined expansion power system applicable to electricity production from high-pressure gas |
| CN107842395A (en) * | 2017-10-24 | 2018-03-27 | 内蒙古科技大学 | A kind of two-stage piston expansion engine |
| CN108506045A (en) * | 2018-03-19 | 2018-09-07 | 冯帆 | A kind of air force transport vehicle special-purpose air engine |
| CN108915779A (en) * | 2018-07-12 | 2018-11-30 | 李洋涛 | A kind of oil-gas hybrid power engine high pressure gas VVA control valve |
| CN112682102A (en) * | 2020-12-24 | 2021-04-20 | 内蒙古科技大学 | Structure coupling type multistage pneumatic power machine |
| CN113217110A (en) * | 2020-01-21 | 2021-08-06 | 机械科学研究院浙江分院有限公司 | Piston steam engine |
| CN115142901A (en) * | 2022-07-07 | 2022-10-04 | 重庆科技学院 | Piston type gas expansion engine |
-
2012
- 2012-10-09 CN CN 201220516106 patent/CN202810945U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103644295A (en) * | 2013-12-15 | 2014-03-19 | 中国科学院工程热物理研究所 | Piston system of single valve expander |
| CN103644295B (en) * | 2013-12-15 | 2015-11-18 | 中国科学院工程热物理研究所 | A kind of piston system of single valve decompressor |
| CN105089830A (en) * | 2014-05-06 | 2015-11-25 | 通用汽车环球科技运作有限责任公司 | Powertrain and method of determining residual gas volume |
| CN104358593A (en) * | 2014-10-27 | 2015-02-18 | 中国科学院工程热物理研究所 | Single valve expander system capable of realizing isothermal expansion and method |
| CN104454015A (en) * | 2014-10-27 | 2015-03-25 | 中国科学院工程热物理研究所 | Isothermal expansion power system by hydraulic pressure |
| CN106499456A (en) * | 2015-09-08 | 2017-03-15 | 熵零股份有限公司 | A kind of external-open charge valve and its electromotor |
| WO2017067118A1 (en) * | 2015-10-20 | 2017-04-27 | 彭学军 | Combined expansion power system applicable to electricity production from high-pressure gas |
| CN107842395A (en) * | 2017-10-24 | 2018-03-27 | 内蒙古科技大学 | A kind of two-stage piston expansion engine |
| CN108506045A (en) * | 2018-03-19 | 2018-09-07 | 冯帆 | A kind of air force transport vehicle special-purpose air engine |
| CN108915779A (en) * | 2018-07-12 | 2018-11-30 | 李洋涛 | A kind of oil-gas hybrid power engine high pressure gas VVA control valve |
| CN108915779B (en) * | 2018-07-12 | 2020-09-22 | 李洋涛 | High-pressure air variable drive control valve for oil-gas hybrid power engine |
| CN113217110A (en) * | 2020-01-21 | 2021-08-06 | 机械科学研究院浙江分院有限公司 | Piston steam engine |
| CN112682102A (en) * | 2020-12-24 | 2021-04-20 | 内蒙古科技大学 | Structure coupling type multistage pneumatic power machine |
| CN115142901A (en) * | 2022-07-07 | 2022-10-04 | 重庆科技学院 | Piston type gas expansion engine |
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Effective date of registration: 20190110 Address after: 100185 No. 301-63, No. 3, Building A 1, Eastern District of Qinghe Jiayuan, Haidian District, Beijing Patentee after: ZHONGCHU GUONENG (BEIJING) TECHNOLOGY Co.,Ltd. Address before: 100190 North four Ring West Road, Haidian District, Beijing, A202 Patentee before: Institute of Engineering Thermophysics, Chinese Academy of Sciences |
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