CN203035384U - Heat regenerator barrel for Stirling engine - Google Patents
Heat regenerator barrel for Stirling engine Download PDFInfo
- Publication number
- CN203035384U CN203035384U CN 201220682347 CN201220682347U CN203035384U CN 203035384 U CN203035384 U CN 203035384U CN 201220682347 CN201220682347 CN 201220682347 CN 201220682347 U CN201220682347 U CN 201220682347U CN 203035384 U CN203035384 U CN 203035384U
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- regenerator
- cylindrical shell
- assembly
- inner chamber
- heat regenerator
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Abstract
The utility model discloses a heat regenerator barrel for a Stirling engine. The heat regenerator barrel is provided with an inner cavity used for arranging a heat regenerator assembly. The structure of the inner cavity is matched with the external shape of the heat regenerator assembly, the lower end of the inner cavity is in a stepped hole structure, the heat regenerator assembly is positioned through a step of the lower end of the inner cavity in the heat regenerator barrel, and the heat regenerator assembly is abutted against the stepped hole step of the lower end of the inner cavity of the heat regenerator barrel through a protruding step. The top of the inner cavity is in circular arc transition with side walls of the inner cavity. The height of an upper hole of the inner cavity is larger than the height from the top end of the heat regenerator assembly to a lower installation step. The heat regenerator barrel has the advantages of being good in maintainability and high in reliability, and is suitable being used for the Stirling engine.
Description
Technical field
The utility model relates to heat engine, especially heat engine regenerator cylindrical shell.
Background technique
Heater block is one of critical component of the heat engine circulatory system, and its quality directly influences the performance index of heat engine.The heater block working environment is harsh, need satisfy the condition of high temperature resistant, high pressure and exhaust gas corrosion, maximum temperature reaches more than 650 ℃ during work, Maximum operating pressure reaches about 18MPa, also need to satisfy the ability of anti-exhaust gas corrosion, so heater block there is specific (special) requirements to material and technology.And the regenerator cylindrical shell in the heater block and heater cylindrical shell are one of parts that processing technology is the most complicated, the cycle is the longest, cost is the highest in all parts of double-action heat engine, and the manufacturing technology level and the reliability that how to improve regenerator cylindrical shell and heater cylindrical shell are the emphasis of heat engine technical study always.
The following structural design of the many employings of traditional regenerator tube structure: the regenerator assembly is installed in the regenerator cylindrical shell, and its upper end contacts and compresses with the regenerator cylindrical shell, and the lower end contacts and compresses with cooler, by the impacting force assurance sealing of upper and lower end.The regenerator assembly material often adopts the 0Cr18Ni9 stainless steel material, and the regenerator cylindrical shell often adopts refractory alloy, as K213.
Because in the heat engine working procedure, particularly behind the long-play, the pollution of working medium is inevitably, very easily causes the regenerator assembly to stop up behind the Working medium pollution or damage, thereby causes the heat engine performance to descend, and at this moment just need change the regenerator assembly.Just need to change whole heater block if can not change the regenerator assembly separately, maintenance cost is just very high like this.The regenerator cylindrical shell of said structure can disassemble the regenerator assembly easily, has avoided being changed whole heater block because of the regenerator assembly by Working medium pollution, has significantly reduced maintenance cost.But also there is following deficiency in this structure:
1, the regenerator assembly is built in the regenerator inner barrel, the upper end leans at the cylinder lumen top, the lower end is leaned by the cooler parts, this mounting type makes regenerator cylindrical shell top directly stressed, and stressed bigger, and should locate operating temperature up to more than 650 ℃, prolongation along with the operating time, the cylindrical shell creep strength reduces, and will cause the cylindrical shell fatigue ruption, shortens the cylindrical shell operating life.
2, because the regenerator assembly material is stainless steel, and the regenerator cylinder material is refractory alloy, the linear expansion coeffcient difference of two kinds of materials, and the former is greater than the latter.Above-mentioned mounting type, the swell increment of regenerator assembly cause the regenerator cylindrical shell vertically bearing after-expansion power greater than the swell increment of regenerator cylindrical shell, make the particularly stress increasing on top of regenerator cylindrical shell, thereby influence the reliability of regenerator cylindrical shell.
3, said structure for easy to process, is convenient to effectively fixedly regenerator assembly simultaneously, and the standing meter in regenerator cylinder lumen top meets at right angles, and this also causes stress to concentrate easily, crackle can occur when serious, causes the regenerator cylindrical shell to damage.In addition, regenerator cylinder lumen top design meets at right angles, and causes local resistance to increase when also easily causing the working medium air-flow to flow between arm and regenerator assembly, influences overall efficiency.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of heat engine regenerator cylindrical shell, solve traditional regenerator cylindrical shell because regenerator assembly mounting type, and interior top of chamber and lower end step are because the right angle transition structure, cause stress to be concentrated, easily cause the problem of regenerator cylindrical shell fatigue damage, solve the mobile excessive problem of local resistance of regenerator cylinder lumen top gas simultaneously.
For achieving the above object, the utility model proposes a kind of heat engine regenerator cylindrical shell, it has an inner chamber that is used for arranging the regenerator assembly, the profile of the structure of described inner chamber and regenerator assembly is suitable, its inner chamber lower end is the shoulder hole structure, it is characterized in that: described regenerator assembly is in the step location of regenerator inner barrel by the inner chamber lower end, and the regenerator assembly is resisted against on the shoulder hole step of regenerator cylinder lumen lower end by the step of projection; Be arc transition between top of chamber and the sidewall in described; The height in the last hole of described inner chamber is installed the height of ladder to the bottom greater than regenerator assembly top.
Preferably, above-mentioned heat engine regenerator cylindrical shell is characterized in that: be conical surface transition between the last hole of the shoulder hole of described inner chamber lower end and the following hole.
Preferably, above-mentioned heat engine regenerator cylindrical shell is characterized in that: top of chamber is taper or arch in described, and the regenerator assembly is behind regenerator inner barrel location, and minimum clearance is 1-3mm between regenerator assembly top and the regenerator cylinder lumen top.
Preferably, above-mentioned heat engine regenerator cylindrical shell is characterized in that: in its cylindrical shell lower end arranged outside flange is arranged, cylindrical shell connects with the heat engine fuselage by flange.
Preferably, above-mentioned heat engine regenerator cylindrical shell is characterized in that: the hole of evenly arranging a plurality of welding heat mechanism of qi working medium heating pipes at its cylindrical shell top.
The beneficial effects of the utility model are:
1, the utility model has improved the mounting type of regenerator cylindrical shell and regenerator assembly, and altered force part makes the stress value of high-temperature zone, cylindrical shell top be in rationally and small range the life-span of having improved cylindrical shell; Regenerator cylinder lumen top design is the arc transition structure, further reduces the stress amplitude at this place, avoids stress to concentrate and tired breaking occur encircling, and has improved the reliability of regenerator cylindrical shell.
2, regenerator cylinder lumen top design is the arc transition structure, and make the top of regenerator cylinder lumen top and regenerator assembly leave a certain amount of gap, can avoid like this because of regenerator assembly and regenerator cylindrical shell because of the different additional stresses that cause of material coefficient of thermal expansion coefficient.Simultaneously, the design of the circular arc at this place also helps and improves the working medium flow condition, reduces local resistance loss, improves overall efficiency.
3, regenerator assembly and regenerator cylindrical shell adopt conical surface location, can avoid right-angle structure and the stress that causes is concentrated, can also be convenient for assembly.
Description of drawings
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is traditional regenerator structural profile schematic representation.
Fig. 2 is structural profile schematic representation of the present utility model.
Fig. 3 is the section of structure behind the installation regenerator assembly in the regenerator cylindrical shell.
Wherein:
1-regenerator cylindrical shell; 2-regenerator assembly; The 3-cooler; The 11-inner chamber; The 12-step; The 13-flange; The 14-hole.
Embodiment
Fig. 1 has illustrated a kind of traditional regenerator tube structure, this regenerator cylindrical shell 1 is the columnar structured of top closure lower ending opening, it has an inner chamber that is used for arranging regenerator assembly 2, for ease of the installation location of regenerator assembly 2 in inner chamber, interior top of chamber is the standing meter transition structure that meets at right angles between roof and the sidewall just, the top of regenerator assembly 2 is resisted against on the roof of regenerator cylindrical shell 1 inner chamber, and the bottom of regenerator assembly 2 is equipped with cooler 3, and is fixed by it.This structure, the installing/dismounting of regenerator assembly 2 is very convenient, and maintenance is better.
Fig. 2 and Figure 3 shows that an embodiment of the present utility model, this regenerator cylindrical shell 1 is for having the columnar structured of an inner chamber 11, inner chamber 11 forms a shoulder hole near close lower end, inner chamber 11 is divided into hole and following hole two-part, last bore dia is smaller, adopt conical surface transition between the last hole of inner chamber 11 and the following hole, and non-traditional right angle transition, standing 90 degree and 120 degree of being set to of the angle of the conical surface.Regenerator assembly 2 is arranged in the inner chamber 11 of regenerator cylindrical shell 1, its profile and inner chamber 11 shapes are suitable, be that the outside, regenerator assembly 2 lower ends also has a cone step, insert on the inner chamber 11 in the hole regenerator assembly 2 upper ends during installation, the lower end cone step is resisted against on the cone step 12 of inner chamber 11 lower ends of regenerator cylindrical shell 1, and the two forms the location by the conical surface.
Above-mentioned mounting type has changed the installation orientation type between regenerator cylindrical shell 1 and the regenerator assembly 2, the installation position location of regenerator cylindrical shell 1 and regenerator assembly 2 is moved on to the bottom from top, cone step 12 and the roof pressure of cooler 3 in the lower end by regenerator cylindrical shell 1 bottom form fixing, changed the force part of regenerator cylindrical shell 1, reduced the stressed of regenerator cylindrical shell 1 top, the stress value of cylindrical shell high-temperature zone is in rationally and small range, has positive role for improving regenerator 1 life-span of cylindrical shell.This structure is convenient to assembling and the location of regenerator assembly 2, and stress deformation when also having avoided the outside thin-wall case of regenerator assembly 2 to install is conducive to further to reduce the thickness of the outside thin-wall case of regenerator assembly 2, alleviates the weight of regenerator assembly 2.
In regenerator cylindrical shell 1 lower end arranged outside flange 13 is arranged, cylindrical shell connects with the heat engine fuselage by flange.
Evenly arrange the hole 14 of a plurality of welding heat mechanism of qi working medium heating pipes at regenerator cylindrical shell 1 top, heating pipe inserts in the above-mentioned hole 14, is connected into one by welding manner and regenerator cylindrical shell 1.
Those skilled in the art will recognize that; above-mentioned embodiment is exemplary; be in order better to make those skilled in the art can understand this patent; can not be interpreted as it is restriction to this patent protection domain; so long as according to spirit that this patent discloses do anyly be equal to change or modify, all fall into the scope of this patent protection.
Claims (5)
1. heat engine regenerator cylindrical shell, it has an inner chamber (11) that is used for arranging regenerator assembly (2), the profile of the structure of described inner chamber (11) and regenerator assembly (2) is suitable, its inner chamber (11) lower end is the shoulder hole structure, it is characterized in that: described regenerator assembly (2) is in the inner step location by inner chamber (11) lower end of regenerator cylindrical shell (1), and regenerator assembly (2) is resisted against by the step of projection on the shoulder hole step (12) of inner chamber (11) lower end of regenerator cylindrical shell (1); Be arc transition between described inner chamber (11) top and the sidewall; The height in the last hole of described inner chamber (11) is installed the height of ladder to the bottom greater than regenerator assembly (2) top.
2. heat engine according to claim 1 regenerator cylindrical shell is characterized in that: be conical surface transition between the last hole of the shoulder hole of described inner chamber (11) lower end and the following hole.
3. heat engine according to claim 1 and 2 regenerator cylindrical shell, it is characterized in that: described inner chamber (11) top is taper or arch, regenerator assembly (2) is after regenerator cylindrical shell (1) positioned internal, and minimum clearance is 1-3mm between inner chamber (11) top of regenerator assembly (2) top and regenerator cylindrical shell (1).
4. heat engine according to claim 3 regenerator cylindrical shell is characterized in that: in its cylindrical shell lower end arranged outside flange (13) is arranged, cylindrical shell connects with the heat engine fuselage by flange (13).
5. heat engine according to claim 4 regenerator cylindrical shell is characterized in that: the even hole (14) of arranging a plurality of welding heat mechanism of qi working medium heating pipes, its cylindrical shell top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220682347 CN203035384U (en) | 2012-12-12 | 2012-12-12 | Heat regenerator barrel for Stirling engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220682347 CN203035384U (en) | 2012-12-12 | 2012-12-12 | Heat regenerator barrel for Stirling engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203035384U true CN203035384U (en) | 2013-07-03 |
Family
ID=48687516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220682347 Expired - Fee Related CN203035384U (en) | 2012-12-12 | 2012-12-12 | Heat regenerator barrel for Stirling engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203035384U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928238A (en) * | 2016-05-11 | 2016-09-07 | 宁波华斯特林电机制造有限公司 | Head tank of Stirling circulator |
-
2012
- 2012-12-12 CN CN 201220682347 patent/CN203035384U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928238A (en) * | 2016-05-11 | 2016-09-07 | 宁波华斯特林电机制造有限公司 | Head tank of Stirling circulator |
| CN105928238B (en) * | 2016-05-11 | 2018-08-21 | 宁波华斯特林电机制造有限公司 | A kind of head tank of Stirling circulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20131212 |