CN106337757A - Variable-volume Piston of Stirling Engine - Google Patents
Variable-volume Piston of Stirling Engine Download PDFInfo
- Publication number
- CN106337757A CN106337757A CN201611029233.XA CN201611029233A CN106337757A CN 106337757 A CN106337757 A CN 106337757A CN 201611029233 A CN201611029233 A CN 201611029233A CN 106337757 A CN106337757 A CN 106337757A
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder
- stirling engine
- cooling cylinder
- barrel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000003562 lightweight material Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000008602 contraction Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 206010016766 flatulence Diseases 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Closures For Containers (AREA)
Abstract
The invention relating to Stirling engine field, is about a stirling engine variable-volume piston, comprising the following items in structure: a flexible piston; the flexible piston is tightly coupled with a sealing flange; by screw A, the sealing flange is connected with a cooling cylinder, which is tightly jointed with hot cylinder through sealing rings and screw B. The invention is characterized in that: by screw A, the sealing flange and cooling cylinder are also fixed with V-shape piston support, which is fixedly connected to an elastic end socket by connecting sheets. While the elastic end socket is fixedly jointed with a piston barrel by an antiskid device arranged on the piston opening, and the piston barrel is equiped with pressure equalization holes arranged in the upper place for more than 2/3rd of piston barrel bottom. The beneficial effects of the invention include: the internal pressure is consistent with the internal pressure of the cylinder, so that the variable-volume piston does not need high-rigidity and pressure-resistant material, to reduce production cost and gas energy consumption for pushing the piston to move, thereby to increase the utilization rate of gas internal energy.
Description
First, technical field
The present invention relates to Stirling engine field, particularly to a kind of Stirling engine variable-volume formula piston.
2nd, background technology
By free-piston, power piston, hot cylinder, cooling cylinder, crank driving mechanism forms Stirling engine with free piston；Freely
Piston is connected by bar-link drive with power piston, and when the engine is running, free-piston is in 90 degree with power piston
Phase angle is run, to ensure the Carnot cycle in hot cylinder and cooling cylinder；Because Stirling engine with free piston will to air-tightness
Ask high, therefore power piston, it is also required to be fitted close to reduce refrigerant leakage at the connecting rod of free-piston and cylinder；Current is close
Encapsulation method is by high-precision machining, selects the strong connecting rod of rigidity and piston material and use multilayer sealing ring；This kind of side
Method difficulty of processing is big, apparatus expensive, complex structure, and sealing effectiveness is inconspicuous, and when engine high pressure runs, its sealing is still
So it cannot be guaranteed that positive confinement.
3rd, content of the invention
There is provided a kind of Stirling engine variable-volume formula piston for the problems referred to above present invention, including flexible plunger (1), flexible
Piston (1) is tightly connected with sealing flange (2), and sealing flange (2) passes through screw a(3) and cooling cylinder (7), cooling cylinder (7) is by sealing
Circle (11), screw b(9) be tightly connected with hot cylinder (10) it is characterised in that: described sealing flange (2) and cooling cylinder (7) are also by spiral shell
Nail a(3) it is fixed with v shape piston holder (4), v shape piston holder (4) is fixedly connected with elastic end socket (14) by connection sheet (5),
Elastic end socket (14) is fixedly connected with piston barrel (6) by the shoe (13) being arranged at piston gap, piston barrel
(6) it is provided with pressure equalisation hole (12) on, described pressure equalisation hole (12) is arranged on piston barrel (6) bottom up 2/3rds
Above place.
Heat abstractor (8) is additionally provided with described cooling cylinder (7), described heat abstractor (8) is to be fixed on dissipating on cooling cylinder (7)
Backing, fin is made up of heat sink material.
Described v shape piston holder (4) has 2, and centrosymmetry is arranged.
Piston barrel (6) by heat conduction and make by resistant to elevated temperatures lightweight material；Elastic end socket (14) is elaxtic seal system
Become；V shape piston holder (4) is made up of rigid material.
The pressure equalisation hole (12) of the upper setting of piston barrel (6) make gas piston barrel (6) in and in cylinder between oneself
By flowing.
Gap between the inwall of the outer wall of piston barrel (6) and hot cylinder (10) and cooling cylinder (7) is less than 10mm.
The operation principle of the present invention is: when electromotor is shut down, flexible plunger (1) is in an intermediate position, piston barrel (6) place
In the middle of hot cylinder (10) and cooling cylinder (7), the interior pressure of piston barrel (6) is identical with the pressure in hot cylinder (10) and cooling cylinder (7)；Work as heat
After cylinder (10) is heated, hot gas rises, and is entered in piston barrel (6) by pressure equalisation hole (12), piston barrel (6) is intrinsic pressure
Power increases, and piston barrel (6) internal volume expands, and moves downward, now the internal cavity of cooling cylinder (7) and flexible plunger (1)
Space increase, reduced pressure, promote flexible plunger (1) decline, the gas in piston barrel (6) complete after volume contraction, stream
Go out piston barrel (6) to enter in hot cylinder (10), piston barrel (6) is returned to original position, because heating continues and gas backstreaming,
Hot cylinder (10) and cooling cylinder (7) is intrinsic pressure insists on height of continuing rising, promotes flexible plunger (1) to move up to original position, now cooling cylinder
(7) space increases, and reduced pressure promotes piston barrel (6) to move upwards, volume contraction, and gas passes through pressure equalisation hole (12)
Enter in hot cylinder (10) and cooling cylinder (7), so that the intrinsic pressure power of cooling cylinder (7) is continued to increase, promote flexible plunger (1) to continue up fortune
Dynamic, the gas in cooling cylinder (7) and flexible plunger (1) complete after volume contraction, gas entered into by pressure equalisation hole (12)
In piston barrel (6), piston barrel (6) returns to position, the interior gas volume contracts last of hot cylinder (10), lives until flexible
Plug (1) returns to original position, and hot cylinder (10) and the interior pressure of cooling cylinder (7) are balanced again with the pressure in piston barrel (6), complete one
The individual cycle；Circulated with this.
The beneficial effects of the present invention is: using flexible plunger, can the perfect sealing solving between cylinder and piston ask
Topic it is ensured that no refrigerant leakage in the cylinder in high-voltage operation, with the purpose reaching motor power and efficiency does not reduce.Can variant
Long-pending formula piston is connected with cylinder, its internal pressure and the intrinsic pressure strongly consistent of cylinder, and therefore variable-volume formula piston does not need high rigidity
Pressure-resistant material, reduces production cost, reduces gas for promoting piston movement to waste interior energy simultaneously, and then improves gas internal energy
Utilization rate, improve Stirling engine output.Cold using flatulence of heat type under the Working medium gas isopiestic state in cylinder barrel
The property of contracting, eliminates link design between free-piston and crank it is ensured that the sealing of cylinder；And engine structure obtains
To simplifying, manufacture difficulty reduces.
4th, brief description
Fig. 1 is present configuration schematic diagram；
Fig. 2 is shoe (13) partial enlarged drawing of Fig. 1；
In figure: 1, flexible plunger, 2, sealing flange, 3, bolt a, 4, v shape piston holder, 5, connection sheet, 6, piston barrel, 7,
Cooling cylinder, 8, heat abstractor, 9, bolt b, 10, hot cylinder, 11, sealing ring, 12, pressure equalisation hole, 13, shoe, 14, elasticity envelope
Head.
5th, specific embodiment
Embodiment 1, a kind of Stirling engine variable-volume formula piston, including flexible plunger (1), flexible plunger (1) and sealing
Flange (2) is tightly connected, and sealing flange (2) passes through screw a(3) and cooling cylinder (7), cooling cylinder (7) is by sealing ring (11), screw b
(9) with hot cylinder (10) be tightly connected it is characterised in that: described sealing flange (2) and cooling cylinder (7) are also by screw a(3) be fixed with
V shape piston holder (4), v shape piston holder (4) are fixedly connected with elastic end socket (14) by connection sheet (5), elastic end socket (14)
It is fixedly connected with piston barrel (6) by the shoe (13) being arranged at piston gap, piston barrel is provided with pressure on (6)
Power balancing hole (12), described pressure equalisation hole (12) is arranged on piston barrel (6) bottom up more than 2/3rds place.
Heat abstractor (8) is additionally provided with described cooling cylinder (7), described heat abstractor (8) is to be fixed on dissipating on cooling cylinder (7)
Backing, fin is made up of heat sink material.
Described v shape piston holder (4) has 2, and centrosymmetry is arranged.
Piston barrel (6) by heat conduction and make by resistant to elevated temperatures lightweight material；Elastic end socket (14) is elaxtic seal system
Become；V shape piston holder (4) is made up of rigid material.
The pressure equalisation hole (12) of the upper setting of piston barrel (6) make gas piston barrel (6) in and in cylinder between oneself
By flowing.
Gap between the inwall of the outer wall of piston barrel (6) and hot cylinder (10) and cooling cylinder (7) is less than 10mm.
Claims (6)
1. a kind of Stirling engine variable-volume formula piston, including flexible plunger (1), flexible plunger (1) and sealing flange (2)
It is tightly connected, sealing flange (2) passes through screw a(3) and cooling cylinder (7), cooling cylinder (7) is by sealing ring (11), screw b(9) and heat
Cylinder (10) be tightly connected it is characterised in that: described sealing flange (2) and cooling cylinder (7) are also by screw a(3) be fixed with v shape piston
Support (4), v shape piston holder (4) is fixedly connected with elastic end socket (14) by connection sheet (5), and elastic end socket (14) passes through to set
Put the shoe at piston gap (13) to be fixedly connected with piston barrel (6), piston barrel (6) is provided with pressure equilibrium
Hole (12), described pressure equalisation hole (12) is arranged on piston barrel (6) bottom up more than 2/3rds place.
2. a kind of Stirling engine variable-volume formula piston according to claim 1 it is characterised in that: described cooling cylinder
(7) it is additionally provided with heat abstractor (8) on, described heat abstractor (8) is the fin being fixed on cooling cylinder (7), and fin is scattered
Hot material is made.
3. a kind of Stirling engine variable-volume formula piston according to claim 1 it is characterised in that: described v shape is lived
Plug support (4) has 2, and centrosymmetry is arranged.
4. a kind of Stirling engine variable-volume formula piston according to claim 1 it is characterised in that: piston barrel
(6) by heat conduction and resistant to elevated temperatures lightweight material is made；Elastic end socket (14) is made up of elaxtic seal；V shape piston holder (4)
It is made up of rigid material.
5. a kind of Stirling engine variable-volume formula piston according to claim 1 it is characterised in that: piston barrel
(6) pressure equalisation hole (12) of upper setting make gas piston barrel (6) in and in cylinder between free-flowing.
6. a kind of Stirling engine variable-volume formula piston according to claim 1 it is characterised in that: piston barrel
(6) gap between outer wall and the inwall of hot cylinder (10) and cooling cylinder (7) is less than 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029233.XA CN106337757B (en) | 2016-11-22 | 2016-11-22 | A kind of Stirling engine variable-volume formula piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611029233.XA CN106337757B (en) | 2016-11-22 | 2016-11-22 | A kind of Stirling engine variable-volume formula piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106337757A true CN106337757A (en) | 2017-01-18 |
| CN106337757B CN106337757B (en) | 2017-10-24 |
Family
ID=57841487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611029233.XA Expired - Fee Related CN106337757B (en) | 2016-11-22 | 2016-11-22 | A kind of Stirling engine variable-volume formula piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106337757B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921920A (en) * | 2017-03-16 | 2017-07-04 | 浙江大学 | A kind of pistonphone of diaphragm seal |
| CN107401463A (en) * | 2017-08-18 | 2017-11-28 | 肖炀 | A kind of piston of the passive energy storage of double acting |
| CN112963266A (en) * | 2021-03-01 | 2021-06-15 | 贾占东 | Engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505047A (en) * | 1993-11-30 | 1996-04-09 | Sanyo Electric Co., Ltd. | Gas compression/expansion apparatus |
| US20100139263A1 (en) * | 2008-12-10 | 2010-06-10 | Toyota Jidosha Kabushiki Kaisha | Piston engine |
| CN103196254A (en) * | 2012-01-06 | 2013-07-10 | 住友重机械工业株式会社 | Cryogenic refrigerator and displacer |
| JP2014043843A (en) * | 2012-08-28 | 2014-03-13 | Yuji Ikedo | Stirling cycle oscillator |
| CN103814191A (en) * | 2011-05-12 | 2014-05-21 | 住友(Shi)美国低温研究有限公司 | Gas balanced cryogenic expansion engine |
| CN206175086U (en) * | 2016-11-22 | 2017-05-17 | 肖炀 | Variable volume formula piston of stirling |
-
2016
- 2016-11-22 CN CN201611029233.XA patent/CN106337757B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505047A (en) * | 1993-11-30 | 1996-04-09 | Sanyo Electric Co., Ltd. | Gas compression/expansion apparatus |
| US20100139263A1 (en) * | 2008-12-10 | 2010-06-10 | Toyota Jidosha Kabushiki Kaisha | Piston engine |
| CN103814191A (en) * | 2011-05-12 | 2014-05-21 | 住友(Shi)美国低温研究有限公司 | Gas balanced cryogenic expansion engine |
| CN103196254A (en) * | 2012-01-06 | 2013-07-10 | 住友重机械工业株式会社 | Cryogenic refrigerator and displacer |
| JP2014043843A (en) * | 2012-08-28 | 2014-03-13 | Yuji Ikedo | Stirling cycle oscillator |
| CN206175086U (en) * | 2016-11-22 | 2017-05-17 | 肖炀 | Variable volume formula piston of stirling |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106921920A (en) * | 2017-03-16 | 2017-07-04 | 浙江大学 | A kind of pistonphone of diaphragm seal |
| CN106921920B (en) * | 2017-03-16 | 2023-09-01 | 浙江大学 | Piston sounder sealed by film |
| CN107401463A (en) * | 2017-08-18 | 2017-11-28 | 肖炀 | A kind of piston of the passive energy storage of double acting |
| CN112963266A (en) * | 2021-03-01 | 2021-06-15 | 贾占东 | Engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106337757B (en) | 2017-10-24 |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191125 Address after: 266200 south of the third floor, No. 168, Ningdong Road, Jimo District, Qingdao, Shandong Province Patentee after: Straw high (Qingdao) energy Co.,Ltd. Address before: 100096 No. 2 Nong Road, Huilongguan, Beijing, Changping District Patentee before: Xiao Yang |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20201202 Address after: 266000 Qidi building, 165 Ningdong Road, Jimo District, Qingdao, Shandong Province Patentee after: Straw High Energy Development Co.,Ltd. Address before: 266200 south of the third floor, No. 168, Ningdong Road, Jimo District, Qingdao, Shandong Province Patentee before: Straw high (Qingdao) energy Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210409 Address after: 266200 south side of the third floor, 168 Ningdong Road, Jimo District, Qingdao City, Shandong Province Patentee after: Straw high (Qingdao) energy Co.,Ltd. Address before: 266000 edifice, 165 Ningdong Road, Jimo District, Qingdao City, Shandong Province Patentee before: Straw High Energy Development Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |