CN204175455U - The Stirling engine of a kind of cold and hot chamber stand alone type power piston - Google Patents
The Stirling engine of a kind of cold and hot chamber stand alone type power piston Download PDFInfo
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- CN204175455U CN204175455U CN201420568523.1U CN201420568523U CN204175455U CN 204175455 U CN204175455 U CN 204175455U CN 201420568523 U CN201420568523 U CN 201420568523U CN 204175455 U CN204175455 U CN 204175455U
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Abstract
The utility model discloses the Stirling engine of a kind of cold and hot chamber stand alone type power piston, comprise heater (1), connecting plate (2), heat exchanger (3), frame (11), swash plate body (21), piston group (22), described piston group (22) is 4, each piston group (22) comprises cold piston cavity and hot piston cavity, hot piston (15) is provided with in described hot piston cavity, cold piston (19) is provided with in described cold piston cavity, the piston head of described cold piston (19) is connected with the piston rod of described hot piston (15), the epicoele of hot piston cavity is connected with one end of described heater (1), the other end of described heater (1) connects one end of heat exchanger (3), and the other end of described heat exchanger (3) is connected with the cavity of resorption of the cold piston cavity of piston group (22).The utility model adopts independently cold piston cavity and hot piston cavity, and cylinder body and piston rod such as to be at the warm deformation, and slipper seal effect improves, and improves the operational efficiency of circulation system.
Description
Technical field
The utility model relates to outer combustion-ing engine technical field, relates to the Stirling engine of a kind of cold and hot chamber stand alone type power piston specifically.
Background technique
Stirling engine is by external heat source energy supply and not high to thermal source quality requirements, and every heat source temperature reaches the thermal source that more than 450 DEG C all can be used as Stirling engine.Therefore, in present stage using energy source with exploitation, there is important application, particularly with the energy supply of the clean energy resource such as living beings and solar energy, and the power generating equipment that Stirling engine and generator form is had extraordinary application prospect.
Stirling engine is the closed type hot circulatory system, existing four cylinder double-action Stirling engines, and the piston in cylinder has the effect of compression piston and expansion piston concurrently, and namely piston crown and afterbody are hot chamber and cold chamber respectively.But when Stirling engine normally works, hot chamber Temperature of Working is at about 800 DEG C, there is the very high temperature difference and pressure reduction in piston movement process, the seal ring of piston crown very easily damages under alternating hot and cold effect.Simultaneously because shuttle back and forth heat conduction and the hot chamber gas of cylinder block and piston all cause cold cavity temperature to raise to the leakage in cold chamber, thus influential system operational efficiency.And temperature difference alternation can cause the slipper seal of piston rod and cylinder body to be lost efficacy thus cause the leakage of internal working medium.
Model utility content
In order to solve the above-mentioned technical problem that the double-acting Stirling engine of four cylinders exists, the utility model provides the Stirling engine of a kind of cold and hot chamber stand alone type power piston.The utility model has piston constant temperature and without to shuttle back and forth heat conduction, thus effectively improves operational efficiency, effectively can improve the seal failure problem because the alternation temperature difference causes simultaneously.
The technological scheme that the utility model solves the problems of the technologies described above is: the Stirling engine of a kind of cold and hot chamber stand alone type power piston, comprise heater, connecting plate, heat exchanger, frame, swash plate body, piston group, described piston group is 4, each piston group comprises cold piston cavity and hot piston cavity, hot piston is provided with in described hot piston cavity, be provided with cold piston in described cold piston cavity, the piston head of described cold piston is connected with the piston rod of described hot piston; The epicoele of hot piston cavity is connected with one end of described heater, and the other end of described heater connects one end of heat exchanger, and the other end of described heat exchanger is connected with the cavity of resorption of the cold piston cavity of piston group.
In the Stirling engine of above-mentioned cold and hot chamber stand alone type power piston, described connecting plate be cross profile and is provided with eight circular holes, and circular hole is that 90 ° of angles distribute four and two-layer inside and outside having, and connecting plate is bolted in frame; Described heater (1) comprises metal tube bank, hot cavity and backheat cavity, the two ends of metal tube bank are connected with hot cavity and backheat cavity respectively, hot cavity is bolted on connecting plate end face, and the internal layer round hole axial of hot cavity and connecting plate aligns, backheat cavity is bolted on the outer circular hole position of connecting plate, and be 90 ° of angles with hot cavity, heater fixes four successively on connecting plate.
In the Stirling engine of above-mentioned cold and hot chamber stand alone type power piston, described piston group comprises hot chamber end, hot piston, cold piston, cold cavity and cold chamber end cap, described hot chamber end cap is provided with circular hole and vent, hot chamber end cap is bolted on connecting plate, by the single circular hole of the internal layer of connecting plate, hot cavity and hot chamber end cap form hot piston cavity, described hot piston is provided with piston ring, hot piston to be arranged in described hot piston cavity and by piston ring slipper seal, the piston rod of described hot piston and the circular hole of described hot chamber end cap are slidably connected by seal ring, described cold cavity is a circular hole, and be provided with vent bottom circular hole, described circular hole is corresponding with the internal layer circular hole position of connecting plate, and cold cavity is bolted in frame, described cold chamber end cap is provided with circular hole and vent, cold chamber end cap is bolted on cold cavity, cold piston cavity is formed by the single circular hole of cold cavity and cold chamber end cap, the piston head of described cold piston is provided with annular groove, in the annular groove of cold piston, piston ring is installed, cold piston is arranged in cold piston cavity and by piston ring slipper seal, the piston rod of cold piston and the circular hole of cold chamber end cap are slidably connected by seal ring.
In the Stirling engine of above-mentioned cold and hot chamber stand alone type power piston, described heat exchanger comprises regenerator, cooler, housing and end cap, described regenerator is arranged in the outer circular hole of connecting plate, be fixed by the circular hole of housing, described housing adopts and is bolted on connecting plate, cooler is installed in the housing, and is undertaken sealing and fixing by end cap.
In the Stirling engine of above-mentioned cold and hot chamber stand alone type power piston, the vent of the hot chamber end cap of the piston group of described offside adopts hot chamber connecting leg to be communicated with; Be provided with vent bottom four circular holes of described cold cavity, the circular hole of the cold cavity of offside piston group is communicated with by cold chamber connecting leg.
In the Stirling engine of above-mentioned cold and hot chamber stand alone type power piston, described end cap is provided with air pipe, and the air pipe of end cap is communicated with the vent of the cold chamber end cap of homonymy.
In the Stirling engine of above-mentioned cold and hot chamber stand alone type power piston, described swash plate body comprises fixing frame, guide rod, slide block, swash plate and output shaft, described output shaft is arranged on fixing frame by bearing, the axis of output shaft overlaps with the axis of symmetry of connecting plate internal layer circular hole, described fixing frame is bolted in frame, described guide rod is arranged on fixing frame, the axis of guide rod and the axis being parallel of cold piston; Described slide block is slidably connected by circular hole and guide rod, and slide block adopts with the piston rod of cold piston and is threaded, and slide block and swash plate are hinged by two hemisphere and install four slide blocks in 90 ° of angles, and swash plate and output shaft adopt key to be fixedly connected with
The utility model has the advantage of: in the working procedure of Stirling engine, the two ends of hot piston and cold piston have a narrow range of temperature, the thermal strain effects of piston ring obviously weakens.Pressure reduction is little respectively by hot chamber connecting leg carries out being communicated with cold chamber connecting leg for the hot piston cavity of offside and cold piston cavity, and simultaneously cylinder body and piston rod such as to be at the warm deformation, and slipper seal effect improves.There is not the heat conduction of shuttling back and forth of cylinder body heat conduction and piston and can effectively improve the circulatory system temperature difference, effectively improve operational efficiency.
Accompanying drawing explanation
Fig. 1 is internal system working medium circulation schematic diagram of the present utility model.
Fig. 2 is left axonometric three-dimensional view of the present utility model.
Fig. 3 is right axonometric three-dimensional view of the present utility model.
Fig. 4 is sectional structure chart of the present utility model.
Fig. 5 is plan structure figure of the present utility model.
Fig. 6 is heater structure figure of the present utility model.
In figure, mark is as follows: 1-heater; 1a-metal tube; 1b-hot cavity; 1c-backheat cavity; 2-connecting plate; 3-heat exchanger; 4-hot chamber connecting leg; 5-cold chamber connecting leg; 6-cold cavity; 7-fixing frame; 8-slide block; 9-swash plate; 10-output shaft; 11-frame; 12-hot chamber end cap; 13-end cap; 14-cold chamber end cap; 15-hot piston; 16-regenerator; 17-housing; 18-cooler; 19-cold piston; 20-guide rod; 21-swash plate body; 22-piston group; A-the 1st quadrant piston group; B-the 2nd quadrant piston group; C-the 3rd quadrant piston group; D-the 4th quadrant piston group.
Embodiment
As shown in Fig. 1-Fig. 6, the utility model comprises connecting plate 2, heater 1, piston group 22, heat exchanger 3, swash plate body 21, frame 11.Described connecting plate 2 is in cross and be provided with eight circular holes, and circular hole be that 90 ° of angles distribute four and two-layer inside and outside having, and connecting plate 2 is bolted in frame 11; Described heater 1 comprises metal tube 1a, hot cavity 1b and backheat cavity 1c, the two ends of described metal tube 1a are connected with hot cavity 1b and backheat cavity 1c respectively, hot cavity 1b is bolted on connecting plate 2 end face, and the internal layer round hole axial of hot cavity 1b and connecting plate 2 aligns, backheat cavity 1c is bolted on the outer circular hole position of connecting plate 2, and is 90 ° of angles with hot cavity 1b.Described heater 1 fixes four successively on connecting plate 2.As shown in Fig. 1-Fig. 6, described piston group 22 comprises hot chamber end cap 12, hot piston 15, cold piston 19, cold cavity 6 and cold chamber end cap 14.Described hot chamber end cap 12 is provided with circular hole and vent, and hot chamber end cap 12 is bolted on connecting plate 2.Hot piston cavity is formed by the single circular hole of the internal layer of connecting plate 2, hot cavity 1b and hot chamber end cap 12, the piston head of described hot piston 15 is provided with annular groove, in the annular groove of hot piston 15, piston ring is installed, hot piston 15 is arranged in hot piston cavity and by piston ring slipper seal, the piston rod of hot piston 15 and the circular hole of hot chamber end cap 12 are slidably connected by seal ring; Described cold cavity 6 is provided with four circular holes, and described four circular holes are corresponding with the internal layer circular hole position of connecting plate 2, and cold cavity 6 is bolted in frame 11; Described cold chamber end cap 14 is provided with circular hole and vent, cold chamber end cap 14 is bolted on cold cavity 6, cold piston cavity is formed by the single circular hole of cold cavity 6 and cold chamber end cap 14, the piston head of described cold piston 19 is provided with annular groove, in the annular groove of cold piston 19, piston ring is installed, cold piston 19 to be arranged in cold piston cavity and by piston ring slipper seal, the piston rod of cold piston 19 and the circular hole of cold chamber end cap 14 are slidably connected by seal ring, and the piston head of cold piston 19 adopts with the piston rod of hot piston 15 and is threaded; Described piston group 22 is provided with four along the internal layer circular hole position of connecting plate 2.
As shown in Fig. 2-Fig. 4, described heat exchanger 3 comprises regenerator 16, cooler 18, housing 17 and end cap 13, described regenerator 16 is arranged in the outer circular hole of connecting plate 2, be fixed by the circular hole of housing 17, shown housing 17 adopts and is bolted on connecting plate 2, cooler 18 is arranged in housing 17, and is undertaken sealing and fixing by end cap 13.Described heat exchanger 3 is provided with four in 90 ° of angle distributions along the outer circular hole of connecting plate 2.
As shown in Fig. 2-Fig. 5, described hot chamber end cap 12 is fixed with four on connecting plate 2, and the vent of the hot chamber end cap 12 of offside adopts hot chamber connecting leg 4 to be communicated with; Vent is provided with, cold cavity 6 mother rib lateral rotundum is communicated with by cold chamber connecting leg 5 bottom four circular holes of described cold cavity 6; Described end cap 13 is provided with air pipe, and the air pipe of end cap 13 is fixed with the vent of the cold chamber end cap 14 of homonymy and is communicated with.
As shown in Fig. 2-Fig. 5, described swash plate body 21 comprises fixing frame 7, guide rod 20, slide block 8, swash plate 9 and output shaft 10.Described output shaft 10 is arranged on fixing frame 7 by bearing, the axis of output shaft 10 overlaps with the axis of symmetry of connecting plate 2 internal layer circular hole, described fixing frame 7 is bolted in frame 11, and described guide rod 20 is arranged on fixing frame 7, the axis of guide rod 20 and the axis being parallel of cold piston 19; Described slide block 8 is slidably connected by circular hole and guide rod 20, and slide block 8 adopts with the piston rod of cold piston 19 and is threaded, and slide block 8 and swash plate 9 are hinged by two hemisphere and install four slide blocks 8 in 90 ° of angles, and swash plate 9 adopts key to be fixedly connected with output shaft 10.
Working principle of the present utility model is as follows: during work, and heater 1 outside provides thermal source, makes the gas working medium in metal tube 1a be heated to more than 450 DEG C, now drives output shaft 10 to rotate by external impetus, namely completes the initial start of Stirling engine.Shown in Fig. 1 and Fig. 4, the hot piston 15 of four piston groups 22 differs 90 ° of phase places, working medium expanded by heating in heater 1, the hot piston 15 of C piston group and cold piston 19 are moved right and close to lower dead center, working medium pressurized on the right side of the hot piston cavity of C piston group on the right side of the hot piston cavity being flowed to A piston group by hot chamber connecting leg 4, and the hot piston 15 promoting A piston group is to left movement.Working medium pressurized on the right side of the cold piston cavity of C piston group is also flowed in the heat exchanger 3 of homonymy by the air pipe of end cap 13.Now A piston group is to left movement and close to top dead center, and low temperature cold working medium flows on the right side of the cold piston cavity of A piston group by the heat exchanger 3 of homonymy, working medium pressurized on the left of the cold piston cavity of A piston group on the left of the cold piston cavity being flowed to C piston group by cold chamber connecting leg 5.
The utility model has the advantage of: in working procedure, hot piston 15 is be connected by the piston rod of hot piston 15 with cold piston 19, and heat conduction of shuttling back and forth does not have substantially.Independently hot piston cavity and cold piston cavity make cylinder body heat conduction not exist, and improve the temperature difference of circulation system and effectively increase operational efficiency.System is through operation after a while, and hot piston 15 and cold piston 19 are in temperature constant state substantially, alleviates the alternating thermal stress effect of piston, under piston head and piston cylinder are in same expansion coefficient, effectively improves the slipper seal effect of seal ring.Its thermal strain effects of temperature constant of the seal ring of the circular hole of cold chamber end cap 14 and the piston rod of cold piston 19 is little and ring wear is little.
Claims (7)
1. the Stirling engine of a cold and hot chamber stand alone type power piston, comprise heater (1), connecting plate (2), heat exchanger (3), frame (11), swash plate body (21), piston group (22), it is characterized in that: described piston group (22) is 4, each piston group (22) comprises cold piston cavity and hot piston cavity, hot piston (15) is provided with in described hot piston cavity, cold piston (19) is provided with in described cold piston cavity, the piston head of described cold piston (19) is connected with the piston rod of described hot piston (15), the epicoele of hot piston cavity is connected with one end of described heater (1), the other end of described heater (1) connects one end of heat exchanger (3), and the other end of described heat exchanger (3) is connected with the cavity of resorption of the cold piston cavity of piston group (22).
2. the Stirling engine of cold and hot chamber according to claim 1 stand alone type power piston, it is characterized in that: described connecting plate (2) is in cross profile and be provided with eight circular holes, circular hole is that 90 ° of angles distribute four and have inside and outside two-layer, and connecting plate (2) is bolted in frame (11), described heater (1) comprises metal tube bank (1a), hot cavity (1b) and backheat cavity (1c), the two ends of metal tube bank (1a) are connected with hot cavity (1b) and backheat cavity (1c) respectively, hot cavity (1b) is bolted on connecting plate (2) end face, and hot cavity (1b) aligns with the internal layer round hole axial of connecting plate (2), backheat cavity (1c) is bolted on the outer circular hole position of connecting plate (2), and with hot cavity (1b) in 90 ° of angles, heater (1) fixes four successively on connecting plate (2).
3. the Stirling engine of cold and hot chamber according to claim 2 stand alone type power piston, it is characterized in that: described piston group (22) comprises hot chamber end cap (12), hot piston (15), cold piston (19), cold cavity (6) and cold chamber end cap (14), described hot chamber end cap (12) is provided with circular hole and vent, hot chamber end cap (12) is bolted on connecting plate (2), by the single circular hole of internal layer of connecting plate (2), hot cavity (1b) and hot chamber end cap (12) form hot piston cavity, described hot piston (15) is provided with piston ring, hot piston (15) to be arranged in described hot piston cavity and by piston ring slipper seal, the piston rod of described hot piston (15) and the circular hole in described hot chamber end cap (12) are slidably connected by seal ring, described cold cavity (6) is a circular hole, and be provided with vent bottom circular hole, described circular hole is corresponding with the internal layer circular hole position of connecting plate (2), and cold cavity (6) is bolted in frame (11), described cold chamber end cap (14) is provided with circular hole and vent, cold chamber end cap (14) is bolted on cold cavity (6), cold piston cavity is formed by the single circular hole of cold cavity (6) and cold chamber end cap (14), the piston head of described cold piston (19) is provided with annular groove, in the annular groove of cold piston (19), piston ring is installed, cold piston (19) is arranged in cold piston cavity and by piston ring slipper seal, the piston rod of cold piston (19) and the circular hole in cold chamber end cap (14) are slidably connected by seal ring.
4. the Stirling engine of cold and hot chamber according to claim 3 stand alone type power piston, it is characterized in that: described heat exchanger (3) comprises regenerator (16), cooler (18), housing (17) and end cap (13), described regenerator (16) is arranged in the outer circular hole of connecting plate (2), be fixed by the circular hole of housing (17), described housing (17) adopts and is bolted on connecting plate (2), cooler (18) is arranged in housing (17), and undertaken sealing and fixing by end cap (13).
5. the Stirling engine of cold and hot chamber according to claim 4 stand alone type power piston, is characterized in that: the vent in hot chamber end cap (12) of the piston group (22) of described offside adopts hot chamber connecting leg (4) to be communicated with; Be provided with vent bottom four circular holes of described cold cavity (6), the circular hole of the cold cavity (6) of offside piston group (22) is communicated with by cold chamber connecting leg (5).
6. the Stirling engine of cold and hot chamber according to claim 4 stand alone type power piston, it is characterized in that: described end cap (13) is provided with air pipe, the air pipe of end cap (13) is communicated with the vent in cold chamber end cap (14) of homonymy.
7. the Stirling engine of the cold and hot chamber stand alone type power piston according to the arbitrary claim of claim 1, it is characterized in that: described swash plate body (21) comprises fixing frame (7), guide rod (20), slide block (8), swash plate (9) and output shaft (10), described output shaft (10) is arranged on fixing frame (7) by bearing, the axis of output shaft (10) overlaps with the axis of symmetry of connecting plate (2) internal layer circular hole, described fixing frame (7) is bolted in frame (11), described guide rod (20) is arranged on fixing frame (7), the axis of guide rod (20) and the axis being parallel of cold piston (19), described slide block (8) is slidably connected by circular hole and guide rod (20), slide block (8) adopts with the piston rod of cold piston (19) and is threaded, slide block (8) and swash plate (9) are hinged by two hemisphere and install four slide blocks (8) in 90 ° of angles, and swash plate (9) adopts key to be fixedly connected with output shaft (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568523.1U CN204175455U (en) | 2014-09-29 | 2014-09-29 | The Stirling engine of a kind of cold and hot chamber stand alone type power piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568523.1U CN204175455U (en) | 2014-09-29 | 2014-09-29 | The Stirling engine of a kind of cold and hot chamber stand alone type power piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175455U true CN204175455U (en) | 2015-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420568523.1U Withdrawn - After Issue CN204175455U (en) | 2014-09-29 | 2014-09-29 | The Stirling engine of a kind of cold and hot chamber stand alone type power piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175455U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389694A (en) * | 2014-09-29 | 2015-03-04 | 湖南科技大学 | Cold and hot cavity independent power piston Stirling engine |
| CN114127404A (en) * | 2019-05-21 | 2022-03-01 | 通用电气公司 | Engine apparatus and method of operation |
-
2014
- 2014-09-29 CN CN201420568523.1U patent/CN204175455U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389694A (en) * | 2014-09-29 | 2015-03-04 | 湖南科技大学 | Cold and hot cavity independent power piston Stirling engine |
| CN104389694B (en) * | 2014-09-29 | 2016-03-02 | 湖南科技大学 | The Stirling engine of a kind of cold and hot chamber stand alone type power piston |
| CN114127404A (en) * | 2019-05-21 | 2022-03-01 | 通用电气公司 | Engine apparatus and method of operation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150225 Effective date of abandoning: 20160302 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |