CN215440753U - Hollow heat-insulating cylinder for single crystal furnace - Google Patents
Hollow heat-insulating cylinder for single crystal furnace Download PDFInfo
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- CN215440753U CN215440753U CN202121846143.6U CN202121846143U CN215440753U CN 215440753 U CN215440753 U CN 215440753U CN 202121846143 U CN202121846143 U CN 202121846143U CN 215440753 U CN215440753 U CN 215440753U
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Abstract
The utility model relates to a hollow heat-insulating cylinder for a single crystal furnace, which comprises: the insulation device comprises an insulation outer cylinder (11), an insulation inner cylinder (12) and a graphite paper layer (13) arranged between the insulation outer cylinder (11) and the insulation inner cylinder (12); the heat-preservation outer cylinder (11) is provided with a cavity (111), and the volume of the cavity (111) is 10-40% of the total volume of the heat-preservation outer cylinder (11). When the inner cylinder fails, only the inner cylinder needs to be replaced, and the graphite paper layer is repaired, so that the outer cylinder is recycled, and the use cost of the heat-insulation cylinder is effectively reduced.
Description
Technical Field
The utility model relates to a heat-insulating cylinder, in particular to a hollow heat-insulating cylinder for a single crystal furnace.
Background
Solar photovoltaic power generation is one of sustainable clean energy, and is rapidly developed in various countries in the world in recent years. At present, silicon crystal solar cells are most widely applied to solar photovoltaic power generation and mainly divided into monocrystalline silicon wafer cells and polycrystalline silicon wafer cells, wherein the monocrystalline silicon wafer cells are favored by the market due to the high-efficiency characteristic, and the most main equipment for producing the monocrystalline silicon wafers is a monocrystalline growth furnace.
At present, the single crystal furnace comprises an upper furnace chamber and a lower furnace chamber, wherein the upper furnace chamber is arranged above the lower furnace chamber and is fixed at the top of the lower furnace chamber through an isolation valve, a seed crystal rotating and lifting mechanism is arranged at the top of the upper furnace chamber, a heat-insulating cylinder is arranged in the lower furnace chamber, a crucible is arranged in the heat-insulating cylinder, a quartz crucible is arranged in the crucible, a heater is arranged outside the crucible, and the heater is positioned in the heat-insulating cylinder. The heat preservation cylinder is a vital device in the single crystal growth furnace, needs to have the characteristics of good heat preservation effect, high temperature resistance, less impurities and the like, and the service life of the heat field of the whole single crystal growth furnace is determined.
When the single crystal growth furnace is used, impurity gases such as silicon vapor, metal and the like generated in the furnace usually contact with the heat-insulating cylinder and react, so that the inner surface of the heat-insulating cylinder is continuously consumed, pulverized, embrittled and fallen off, and the heat-insulating effect of a thermal field in the furnace is poor. A heat preservation section of thick bamboo among the prior art is independent drum usually, is destroyed easily, and life is shorter, and in case a heat preservation section of thick bamboo produces the defect in the use, just need change whole heat preservation section of thick bamboo, and the cost is higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a hollow heat-insulating cylinder for a single crystal furnace, which solves the problem of high use cost of the heat-insulating cylinder.
In order to achieve the above object, the present invention provides a hollow thermal insulation cylinder for single crystal furnace, comprising: the heat insulation device comprises a heat insulation outer barrel, a heat insulation inner barrel and a graphite paper layer arranged between the heat insulation outer barrel and the heat insulation inner barrel;
the heat-preservation outer barrel is provided with a cavity, and the volume of the cavity is 10% -40% of the total volume of the heat-preservation outer barrel.
According to one aspect of the utility model, the heat-insulating outer cylinder, the graphite paper layer and the heat-insulating inner cylinder are bonded with each other, and the heat-insulating inner cylinder is arranged in a peelable manner.
According to one aspect of the utility model, a plurality of connecting pieces are regularly or randomly arranged on the heat-insulating inner cylinder, and the connecting pieces sequentially penetrate through the heat-insulating inner cylinder and the graphite paper layer to be connected with the heat-insulating outer cylinder.
According to one aspect of the utility model, the thickness of the insulating inner cylinder is 1mm to 3 mm.
According to one aspect of the utility model, the thickness of the graphite paper layer is 0.5mm to 2 mm.
According to one aspect of the utility model, the heat-insulating inner cylinder is a carbon-carbon composite material cylinder;
the material density of the heat-insulating inner cylinder is more than or equal to 1.3g/cm3And the bending strength of the heat-insulating inner cylinder is more than or equal to 80 Mpa.
According to one aspect of the utility model, the cavity is in a shape with a regular or irregular cross section, and along the circumferential direction of the heat-preservation outer cylinder, the cavity is an annular cavity in the heat-preservation outer cylinder.
According to one aspect of the utility model, the plurality of cavities are arranged in parallel along the radial direction of the heat-preservation outer cylinder.
According to one aspect of the utility model, a reinforcing bar is disposed within the cavity;
and the reinforcing ribs are arranged in the cavity at equal intervals or randomly along the circumferential direction of the heat-insulating outer cylinder.
According to one aspect of the utility model, the heat-preservation outer cylinder is made of polyacrylonitrile carbon felt;
the connecting piece is a carbon-carbon composite nail.
According to the scheme of the utility model, when the inner cylinder fails, only the inner cylinder needs to be replaced and the graphite paper layer needs to be repaired, so that the outer cylinder is recycled, and the use cost of the heat-insulating cylinder is effectively reduced.
According to one scheme of the utility model, by adopting the combined heat-insulating cylinder consisting of a plurality of parts, when the inner cylinder is damaged, a new heat-insulating inner cylinder can be reconnected in a dismounting and replacing manner, so that the outer cylinder of the scheme can be ensured to be reused, the maintainability and the service life of the scheme are greatly improved, and meanwhile, the maintenance cost of the scheme is also reduced.
According to the scheme of the utility model, the heat-insulation outer cylinder, the graphite paper layer and the heat-insulation inner cylinder are connected in a bonding mode, so that the connection stability can be effectively ensured, the connection thickness is reduced, and the connection efficiency is improved. In addition, the heat-insulation inner cylinder can be conveniently and effectively replaced when the heat-insulation inner cylinder is damaged in a stripping mode, and the service life of the heat-insulation inner cylinder is prolonged.
According to the scheme of the utility model, the connection stability between the heat-preservation inner cylinder and the heat-preservation outer cylinder can be further ensured by adopting the pinning effect of the connecting piece, and the use stability and the service life of the scheme are further effectively improved.
According to the scheme of the utility model, the heat-insulation inner cylinder is arranged in the thickness range, so that the performance of the heat-insulation inner cylinder can be effectively ensured, the overall thickness of the combined heat-insulation cylinder can be effectively reduced, the material is further saved and the production cost is reduced under the condition that the service performance of the scheme is fully ensured.
According to one scheme of the utility model, the graphite paper layer is arranged in the thickness range, so that the graphite paper layer can be conveniently detached during maintenance of the inner barrel under the condition of ensuring stable connection with the inner barrel and the outer barrel, the outer barrel cannot be influenced, and the scheme is beneficial to improving the maintainability.
According to one scheme of the utility model, the heat-insulating outer barrel is provided with the cavity, the volume of the cavity is 10-40% of the volume of the whole heat-insulating outer barrel, and the material usage amount of the outer barrel is effectively reduced, the production cost of the outer barrel is effectively saved, and the weight of the outer barrel is reduced under the condition that the heat-insulating effect of the outer barrel is ensured.
Drawings
FIG. 1 is a view schematically showing the construction of a hollow core thermal insulating cylinder for a single crystal furnace according to an embodiment of the present invention;
FIG. 2 is a structural view schematically showing a hollow core thermal insulating cylinder for a single crystal furnace according to another embodiment of the present invention;
fig. 3 is a block diagram schematically illustrating a reinforcing bar according to an embodiment of the present invention;
fig. 4 is a structural view schematically showing a reinforcing bar according to another embodiment of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the utility model, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In describing embodiments of the present invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is based on the orientation or positional relationship shown in the associated drawings, which is for convenience and simplicity of description only, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above-described terms should not be construed as limiting the present invention.
The present invention is described in detail below with reference to the drawings and the specific embodiments, which are not repeated herein, but the embodiments of the present invention are not limited to the following embodiments.
As shown in FIG. 1, according to one embodiment of the present invention, a hollow thermal insulating cylinder for a single crystal furnace comprises: the heat-preservation outer cylinder 11, the heat-preservation inner cylinder 12 and the graphite paper layer 13 arranged between the heat-preservation outer cylinder 11 and the heat-preservation inner cylinder 12. In the present embodiment, the heat-insulating outer cylinder 11 is provided with a cavity 111, and the volume of the cavity 111 is 10% to 40% of the total volume of the heat-insulating outer cylinder 11.
According to the utility model, by adopting the combined heat-insulating cylinder consisting of a plurality of parts, when the inner cylinder is damaged, a new heat-insulating inner cylinder can be reconnected in a dismounting and replacing manner, so that the outer cylinder of the scheme can be repeatedly utilized, the maintainability and the service life of the scheme are greatly improved, and meanwhile, the maintenance cost of the scheme is also reduced.
According to the utility model, the heat-insulating outer cylinder is provided with the cavity, the volume of the cavity is 10-40% of the volume of the whole heat-insulating outer cylinder, and the heat-insulating outer cylinder with the hollow structure effectively reduces the material usage amount of the outer cylinder, effectively saves the production cost of the outer cylinder and lightens the weight of the outer cylinder under the condition of ensuring the heat-insulating effect of the outer cylinder.
As shown in fig. 1, according to an embodiment of the present invention, the heat-insulating outer cylinder 11, the graphite paper layer 13 and the heat-insulating inner cylinder 12 are bonded to each other, and the heat-insulating inner cylinder 12 is disposed in a peelable manner. In the present embodiment, the heat-insulating outer cylinder 11, the graphite paper layer 13, and the heat-insulating inner cylinder 12 are bonded together with resin to form an integral structure.
Through the arrangement, the heat-insulation outer barrel 11, the graphite paper layer 13 and the heat-insulation inner barrel 12 are connected in a bonding mode, so that the connection stability can be effectively guaranteed, the connection thickness is reduced, and the connection efficiency is improved. In addition, the heat-insulating inner cylinder 12 can be conveniently and effectively replaced when the heat-insulating inner cylinder is damaged in a stripping mode, and the service life of the heat-insulating inner cylinder is prolonged.
As shown in fig. 1, according to an embodiment of the present invention, a plurality of connectors are arranged on the inner insulation barrel 12 regularly or randomly, and the connectors are connected to the outer insulation barrel 11 sequentially passing through the inner insulation barrel 12 and the graphite paper layer 13. In this embodiment, the connector is a carbon-carbon composite nail.
Through the setting, through the pinning effect that adopts the connecting piece, can further guarantee the stability of being connected between heat preservation inner tube and the heat preservation urceolus, further effectual improvement this scheme's stability in use and life.
As shown in FIG. 1, according to one embodiment of the present invention, the insulating inner cylinder 12 has a thickness of 1mm to 3 mm.
Through the setting, the inner tube that will keep warm sets up at above-mentioned thickness within range, not only can effectively guarantee its performance, can also effectually reduce the holistic thickness of combination heat preservation section of thick bamboo, under the condition of fully having guaranteed the performance of this scheme, still further practiced thrift the material and reduced manufacturing cost.
As shown in fig. 1, according to one embodiment of the present invention, the thickness of the graphite paper layer 13 is 0.5mm to 2 mm.
Through the setting, with graphite paper layer setting in above-mentioned thickness within range, can still help demolising when the inner tube maintains under the circumstances of guaranteeing to be connected with inner tube and urceolus are stable, and can not exert an influence to the urceolus, it is beneficial to improve the maintainability of this scheme.
As shown in FIG. 1, according to one embodiment of the present invention, the inner insulating cylinder 12 is a carbon-carbon composite cylinder. In the present embodiment, the material density of the warm inner cylinder 12 is 1.3g/cm or more3And the bending strength of the heat-insulating inner cylinder 12 is more than or equal to 80 Mpa.
Through the setting, the material performance of the heat-insulation inner barrel is set in the range, and the use reliability of the scheme is effectively guaranteed.
According to an embodiment of the present invention, the cavity 111 has a regular or irregular cross section, and along the circumferential direction of the heat-insulating outer cylinder 11, the cavity 111 is an annular cavity in the heat-insulating outer cylinder 11. In the present embodiment, the cavity 111 has a regular shape, such as a rectangular or oval cross section, and is adjusted as needed when it is irregular.
Through the arrangement, the cavity 111 is arranged to be a continuous annular cavity in the heat-insulation outer barrel, so that the uniform quality distribution of the whole heat-insulation outer barrel is guaranteed, the structure is simple, and the processing difficulty of the whole heat-insulation outer barrel is reduced.
As shown in fig. 2, according to an embodiment of the present invention, a plurality of cavities 111 are arranged in parallel along the radial direction of the heat-insulating outer cylinder 11. In the embodiment, the cross-sectional shapes and sizes of the plurality of cavities 111 arranged in parallel can be set to be consistent or different according to requirements, so that the flexible arrangement of the cavities in the radial direction of the heat-preservation outer barrel is realized, and meanwhile, under the conditions of ensuring the heat-preservation effect of the heat-preservation outer barrel and reducing the weight of the heat-preservation outer barrel, the structural strength of the hollow part of the heat-preservation outer barrel is favorably enhanced, and the structural strength and the use stability of the whole heat-preservation barrel are further favorably ensured.
According to one embodiment of the present invention, a rib a is provided in the cavity 111. In the present embodiment, the ribs are arranged at equal intervals or randomly in the cavity 111 along the circumferential direction of the heat insulating outer cylinder 11. In the present embodiment, the reinforcing beads may be solid plate-shaped reinforcing beads (see fig. 3) or hollow plate-shaped reinforcing beads (see fig. 4).
Through the arrangement, the reinforcing ribs are arranged in the cavity 111, so that the structural strength of the heat-insulation outer barrel can be further effectively enhanced, and the structural strength and the use stability of the whole heat-insulation barrel are further ensured.
In the present embodiment, the heat-insulating outer cylinder 11 is formed by winding carbon felt and then curing, for example, polyacrylonitrile carbon felt.
The foregoing is merely exemplary of particular aspects of the present invention and devices and structures not specifically described herein are understood to be those of ordinary skill in the art and are intended to be implemented in such conventional ways.
The above description is only one embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A hollow heat-preserving cylinder for a single crystal furnace is characterized by comprising: the insulation device comprises an insulation outer cylinder (11), an insulation inner cylinder (12) and a graphite paper layer (13) arranged between the insulation outer cylinder (11) and the insulation inner cylinder (12);
the heat-preservation outer cylinder (11) is provided with a cavity (111), and the volume of the cavity (111) is 10-40% of the total volume of the heat-preservation outer cylinder (11).
2. The hollow-core heat-insulating cylinder for the single crystal furnace according to claim 1, wherein the heat-insulating outer cylinder (11), the graphite paper layer (13) and the heat-insulating inner cylinder (12) are bonded to each other, and the heat-insulating inner cylinder (12) is arranged in a peelable manner.
3. The hollow-core heat-preserving cylinder for the single crystal furnace as claimed in claim 2, wherein a plurality of connecting pieces are regularly or randomly arranged on the heat-preserving inner cylinder (12), and the connecting pieces are connected with the heat-preserving outer cylinder (11) by sequentially penetrating the heat-preserving inner cylinder (12) and the graphite paper layer (13).
4. The hollow-core thermal insulation cylinder for the single crystal furnace according to any one of claims 1 to 3, wherein the thickness of the thermal insulation inner cylinder (12) is 1mm to 3 mm.
5. The hollow-core thermal insulation cylinder for the single crystal furnace according to claim 4, wherein the thickness of the graphite paper layer (13) is 0.5mm to 2 mm.
6. The hollow-core heat-preserving cylinder for the single crystal furnace as claimed in claim 4, wherein the heat-preserving inner cylinder (12) is a carbon-carbon composite material cylinder;
the material density of the heat-insulating inner cylinder (12) is more than or equal to 1.3g/cm3And the bending strength of the heat-insulating inner cylinder (12) is more than or equal to 80 Mpa.
7. The hollow-core heat-preserving cylinder for the single crystal furnace according to any one of claims 1 to 3, wherein the cavity (111) is regular or irregular in cross section, and along the circumferential direction of the heat-preserving outer cylinder (11), the cavity (111) is an annular cavity in the heat-preserving outer cylinder (11).
8. The hollow-core heat-preserving cylinder for the single crystal furnace as claimed in claim 7, wherein a plurality of the cavities (111) are arranged in parallel in a radial direction of the heat-preserving outer cylinder (11).
9. The hollow-core thermal insulation cylinder for the single crystal furnace according to claim 8, wherein a reinforcing rib is arranged in the cavity (111);
and the reinforcing ribs are arranged in the cavity (111) at equal intervals or randomly along the circumferential direction of the heat-insulating outer cylinder (11).
10. The hollow heat-preserving cylinder for the single crystal furnace as claimed in claim 3, wherein the heat-preserving outer cylinder (11) is made of polyacrylonitrile carbon felt;
the connecting piece is a carbon-carbon composite nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121846143.6U CN215440753U (en) | 2021-08-09 | 2021-08-09 | Hollow heat-insulating cylinder for single crystal furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121846143.6U CN215440753U (en) | 2021-08-09 | 2021-08-09 | Hollow heat-insulating cylinder for single crystal furnace |
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| Publication Number | Publication Date |
|---|---|
| CN215440753U true CN215440753U (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121846143.6U Active CN215440753U (en) | 2021-08-09 | 2021-08-09 | Hollow heat-insulating cylinder for single crystal furnace |
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| CN (1) | CN215440753U (en) |
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2021
- 2021-08-09 CN CN202121846143.6U patent/CN215440753U/en active Active
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