CN202064035U - Heat insulating device of polysilicon ingot furnace - Google Patents
Heat insulating device of polysilicon ingot furnace Download PDFInfo
- Publication number
- CN202064035U CN202064035U CN2011201262408U CN201120126240U CN202064035U CN 202064035 U CN202064035 U CN 202064035U CN 2011201262408 U CN2011201262408 U CN 2011201262408U CN 201120126240 U CN201120126240 U CN 201120126240U CN 202064035 U CN202064035 U CN 202064035U
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- heat
- heat insulating
- insulation cage
- boards
- silicon ingot
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Abstract
The utility model discloses a heat insulating device of a polysilicon ingot furnace and relates to the technical field of thermal field heat insulation of polysilicon ingot furnaces. A heat insulating cage is arranged on the outside of a heater and a crucible, the heat insulating cage is formed by steel frames and heat insulating boards fixed by the steel frames. Heat insulating cage outer side boards are arranged outside the peripheral heat insulating cage inner side boards, the heat insulating cage inner side boards and the heat insulating cage outer side boards are divided into an upper portion and a lower portion respectively, one to four pieces of C/C composite boards are arranged on the inner sides of the upper heat insulating cage inner side boards and are fixed to the upper heat insulating cage inner side boards and the upper heat insulating cage outer side boards through fixing screws. The C/C composite boards are carbon material composite boards. The heat insulating device of the polysilicon ingot furnace has the advantages of reducing the phenomenon that powders fall off from the original heat insulating boards due to long time high-temperature baking, improving heat insulating performance in the heat insulating cage, effectively improving the quality of the silicon ingot , reducing carbon content and shadow of the silicon ingot, and being capable of prolonging service life of the heat insulating boards on the inner sides of the heat insulating boards to two years or so, thereby saving energy, and reducing consumption and production cost.
Description
Technical field
The utility model relates to the polycrystalline silicon ingot or purifying furnace technical field, especially polycrystalline silicon ingot or purifying furnace thermal field heat preservation technology field.
Background technology
The polycrystalline silicon ingot or purifying furnace heat-insulation cage comprises top board, base plate and side plate all around, and the heat-insulation cage side plate is divided into two portions and inside and outside two-layer up and down.Nearer and thermal baffle is the graphite carbon felt material to heat-insulation cage top medial septal hot plate from side heater, and serious efflorescence can appear in thermal baffle behind the long-time high bake; When the heat-insulation cage side plate moved up and down, side plate and top board friction made the landing of atomizing Graphite Powder 99.Side medial septal hot plate will attenuation if things go on like this, and then influences the integral heat insulation effect of heat-insulation cage, when causing moving heating power increase and the thermograde of thermal field occur inhomogeneous, thereby shade appears when causing the long crystalline substance of silicon ingot.The Graphite Powder 99 of landing enters in the silicon liquid of fusing, makes the carbide severe overweight of silicon ingot.For the normal use that guarantees stove and the quality index of silicon ingot, the inboard warming plate in heat-insulation cage top uses and just needed to change in about 1 year.Like this, increase cost undoubtedly, and influenced production schedule to a certain extent.
Therefore it is necessary to resolve this problem.
The utility model content
The purpose of this utility model provides a kind of polycrystalline silicon ingot or purifying furnace heat-proof device, and it has overcome the defective of prior art, can significantly reduce the thermal baffle efflorescence, prolongs the work-ing life of equipment, reduces production costs, and improves the quality index of silicon ingot.
The purpose of this utility model realizes by following scheme:
The polycrystalline silicon ingot or purifying furnace heat-proof device, outer setting at crucible and well heater has heat-insulation cage, heat-insulation cage is reached by steelframe and is constituted by steelframe institute fixed thermal baffle, heat-insulation cage is a cuboid, have six faces, wherein, heat-insulation cage interior plate all around is divided into two portions up and down, promptly goes up heat-insulation cage interior plate and following heat-insulation cage interior plate; The heat-insulation cage interior plate is outside equipped with the heat-insulation cage outer panel, and the heat-insulation cage outer panel is divided into two portions up and down, promptly goes up heat-insulation cage outer panel and following heat-insulation cage outer panel; It is characterized in that: be provided with 1-4 piece protective shield in the inboard of last heat-insulation cage interior plate, described protective shield refers to the C/C composition board, and the C/C composition board is fixed up by retaining screw and last heat-insulation cage interior plate and last heat-insulation cage outer panel.
The utility model also can further be realized by following scheme:
Inboard at following heat-insulation cage interior plate is provided with 1-4 piece C/C composition board, and the C/C composition board is fixed up by retaining screw and following heat-insulation cage interior plate and following heat-insulation cage outer panel.
Wherein, the C/C composition board on the C/C composition board of bottom and top connects.
Described C/C composition board is a kind of raw material of wood-charcoal material composition board; It specifically can be the charcoal fiber composite plate.
Described retaining screw refers to graphite screw rod and graphite nut, promptly is graphite material and makes.
Described C/C composition board is long to be 100-130 cm, and wide is 50-60cm, and thick is 0.3-1cm; Further be the long 110-120 cm that is, wide is 52-58cm, and thick is 0.4-0.6cm; Be preferably the long 118cm that is, wide is 57cm, and thick is 0.5cm.If be adopted as 4, then 4 C/C composition boards can be selected onesize.
Described C/C composition board requires: carbon element content 〉=99%.
Described C/C composition board requires: Al, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni total impurities content≤1ppm.
Described C/C composition board requires: anti-high temperature more than 1500 ℃, i.e. and long term operation is in that (to contain 1500 ℃) more than 1500 ℃ indeformable; Be specially and bear 1500-2200 ℃ of temperature-resistant shape for a long time.
Described C/C composition board requires: parallel fibers direction, vertical fibers direction tensile strength all 〉=5MPa, tensile modulus 〉=30GPa, thermal conductivity 〉=2W/mK, thermal expansivity 〉=0.2 * 10
-6/ K.
Be preferably: parallel fibers direction, vertical fibers direction tensile strength are that (450 ℃) more than or equal to 0.5 * 10 more than or equal to 45GPa, thermal conductivity more than or equal to 3W/mK, thermal expansion more than or equal to 10MPa, tensile modulus all
-6/ K.
Described C/C composition board parallel fibers direction, vertical fibers direction tensile strength are inequality; Be the tensile strength of the tensile strength of parallel fibers direction greater than the vertical fibers direction; The tensile strength that can select the parallel fibers direction is vertical fibers direction tensile strength 10-100 times.Specifically select 50-1000MPa as the tensile strength of parallel fibers direction; The tensile strength of vertical fibers direction is selected 5-15 MPa.
The beneficial effects of the utility model are: in the inboard one deck carbon/carbon composite composition board that increases of original heat-insulation cage thermal baffle, reduce the dry linting phenomenon that the long-time high bake of former thermal baffle causes, promote the heat-insulating property of heat-insulation cage inside, the silicon ingot quality be can effectively improve, silicon ingot carbon content and shade reduced; Through to the inboard warming plate user mode measuring and calculating of thermal baffle, extended to about 2 years the work-ing life of the inboard warming plate of thermal baffle.Thereby totally realized prolonging the work-ing life of equipment, improved the quality of products, saved energy and reduce the cost, reduce production costs.
Description of drawings
Fig. 1 is the utility model structural representation.
Among the figure: 1 is furnace chamber, and 2 is the C/C composition board, and 3 is retaining screw, 4 is well heater, and 5 is crucible, and 6 is pillar stiffener, 7 is the heat-insulation cage base plate, 8 is the graphite cooling block, and 9 is the heat-insulation cage interior plate, and 10 is the heat-insulation cage outer panel, 11 is the well heater fixed link, 12 is observation tube, and 13 is the heat-insulation cage top board, and 14 is heat insulation lifting screw mandrel.
Embodiment
In order to make those skilled in the art person understand the utility model scheme better, and above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, the utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment:
As shown in Figure 1, furnace chamber 1 is a cavity, in be provided with crucible 5, crucible 5 places on the graphite cooling block 8, graphite cooling block 8 is supported by pillar stiffener 4, pillar stiffener 4 passes bottom heat-insulation cage base plate 7, the bottom is fixed on furnace chamber 1 inwall; Be provided with well heater 4 above crucible 5, well heater 4 is fixed in well heater fixed link 11 lower ends, and the central authorities of furnace chamber 1 are provided with observation tube 12 from top to bottom; Heat-insulation cage is arranged at the outside of crucible 5 and well heater 4, and the structure of heat-insulation cage is: heat-insulation cage is reached by steelframe and is constituted by steelframe institute fixed thermal baffle, and heat-insulation cage is a cuboid, have six faces, wherein, the heat-insulation cage fixed part comprises: top is heat-insulation cage top board 13, is heat-insulation cage base plate 7 below; The heat-insulation cage moving part comprises: be heat-insulation cage interior plate 9 all around, heat-insulation cage interior plate 9 is a double-layer graphite carbon felt plate, and heat-insulation cage interior plate 9 is divided into two portions up and down, promptly goes up heat-insulation cage interior plate 9 and following heat-insulation cage interior plate 9; Heat-insulation cage interior plate 9 is outside equipped with heat-insulation cage outer panel 10, and heat-insulation cage outer panel 10 is divided into two portions up and down, promptly goes up heat-insulation cage outer panel 10 and following heat-insulation cage outer panel 10.
Be provided with C/C(charcoal/charcoal in the inboard of last heat-insulation cage interior plate 9) composition board 2, and by retaining screw 3 C/C composition board 2 and heat-insulation cage interior plate 9 and heat-insulation cage outer panel 10 are fixed up.The utility model is provided with 4, promptly top four, also can only be provided with top 8 as required, promptly top four, below four; Dividing is arranged is convenient to dismounting and transportation.
The C/C composite board material constitutes a kind of raw material of wood-charcoal material composition board, during making, can adopt existing charcoal fiberboard manufacturing technology to make; Retaining screw 3(screw rod and nut) be that graphite material makes.C/C composition board 2 is a high temperature material, and C/C composition board 2 requires: high temperature resistant, work long hours at (general requirement 1500-2200 ℃) more than 1500 ℃.Carbon element content more than or equal to 99%, parallel fibers direction, vertical fibers direction tensile strength all more than or equal to 10MPa(parallel fibers direction tensile strength greater than vertical fibers direction tensile strength), tensile modulus more than or equal to 45GPa, thermal conductivity more than or equal to 3W/mK, thermal expansion system (450 ℃) more than or equal to 0.5 * 10
-6/ K.The impurity measurement value of C/C composition board 2 materials: Al, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni total impurities content are less than or equal to 1ppm.
The parameter of C/C composition board 2 also can be carried out following selection: parallel fibers direction, vertical fibers direction tensile strength all wherein more than or equal to 15MPa(, the horizontal direction tensile strength of fiber more than or equal to 500MPa, vertical fibers direction tensile strength all more than or equal to 15MPa), tensile modulus more than or equal to 50GPa, thermal conductivity more than or equal to 4W/mK, thermal expansion system (450 ℃) more than or equal to 0.8 * 10
-6/ K.
The existence of C/C composition board 2 can be protected heat-insulation cage side plate 7 to avoid high bake and produces serious dry linting.The four C/C composition boards 2 that increase are onesize, every block length 100-130 cm, wide 50-60cm, thick 0.3-1.0cm.Preferred length is 118cm, and wide is 57cm, and thick is 0.5cm.
Heat insulation lifting screw mandrel 14 lower ends are fixed on the corresponding steelframe in heat-insulation cage moving part top.When needs are adjusted temperature, can promote the moving part of heat-insulation cage, at this moment, heat-insulation cage interior plate 9, heat-insulation cage outer panel 10 and C/C composition board 2 are promoted to certain altitude, it is bigger that the bottom of heat-insulation cage moving part and heat-insulation cage base plate 7 are connected the slit, and the heat-insulation cage heat sheds from the slit, the formation temperature gradient, be upper and lower temperature difference, above low below high.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement all should be encompassed within the protection domain of the present utility model.
Claims (9)
1. polycrystalline silicon ingot or purifying furnace heat-proof device, outer setting at crucible and well heater has heat-insulation cage, heat-insulation cage is reached by steelframe and is constituted by steelframe institute fixed thermal baffle, heat-insulation cage is a cuboid, have six faces, wherein, heat-insulation cage interior plate all around is divided into two portions up and down, promptly goes up heat-insulation cage interior plate and following heat-insulation cage interior plate; The heat-insulation cage interior plate is outside equipped with the heat-insulation cage outer panel, and the heat-insulation cage outer panel is divided into two portions up and down, promptly goes up heat-insulation cage outer panel and following heat-insulation cage outer panel; It is characterized in that: be provided with 1-4 piece protective shield in the inboard of last heat-insulation cage interior plate, described protective shield refers to the C/C composition board, and the C/C composition board is fixed up by retaining screw and last heat-insulation cage interior plate and last heat-insulation cage outer panel.
2. polycrystalline silicon ingot or purifying furnace heat-proof device according to claim 1, it is characterized in that: the inboard at following heat-insulation cage interior plate is provided with 1-4 piece C/C composition board, and the C/C composition board is fixed up by retaining screw and following heat-insulation cage interior plate and following heat-insulation cage outer panel.
3. polycrystalline silicon ingot or purifying furnace heat-proof device according to claim 1 and 2 is characterized in that: retaining screw refers to graphite screw rod and graphite nut.
4. polycrystalline silicon ingot or purifying furnace heat-proof device according to claim 1 and 2 is characterized in that: the compound thickness of slab of C/C is 0.3-1cm.
5. polycrystalline silicon ingot or purifying furnace heat-proof device according to claim 4 is characterized in that: the C/C composition board requires: carbon element content 〉=99%.
6. polycrystalline silicon ingot or purifying furnace heat-proof device according to claim 4 is characterized in that: the C/C composition board requires: Al, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, Ni total impurities content≤1ppm.
7. polycrystalline silicon ingot or purifying furnace heat-proof device according to claim 4 is characterized in that: the C/C composition board requires: bear 1500-2200 ℃ of temperature-resistant shape for a long time.
8. polycrystalline silicon ingot or purifying furnace heat-proof device according to claim 4 is characterized in that: the C/C composition board requires: parallel fibers direction, vertical fibers direction tensile strength all 〉=5MPa, tensile modulus 〉=30GPa, thermal conductivity 〉=2W/mK, thermal expansivity 〉=0.2 * 10
-6/ K.
9. polycrystalline silicon ingot or purifying furnace heat-proof device according to claim 8 is characterized in that: the C/C composition board requires: the tensile strength of C/C composition board parallel fibers direction is vertical fibers direction tensile strength 10-100 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201262408U CN202064035U (en) | 2011-04-26 | 2011-04-26 | Heat insulating device of polysilicon ingot furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201262408U CN202064035U (en) | 2011-04-26 | 2011-04-26 | Heat insulating device of polysilicon ingot furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202064035U true CN202064035U (en) | 2011-12-07 |
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ID=45057903
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201262408U Expired - Fee Related CN202064035U (en) | 2011-04-26 | 2011-04-26 | Heat insulating device of polysilicon ingot furnace |
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| Country | Link |
|---|---|
| CN (1) | CN202064035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757690A (en) * | 2014-01-22 | 2014-04-30 | 高佳太阳能股份有限公司 | Polycrystalline silicon ingot furnace |
-
2011
- 2011-04-26 CN CN2011201262408U patent/CN202064035U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103757690A (en) * | 2014-01-22 | 2014-04-30 | 高佳太阳能股份有限公司 | Polycrystalline silicon ingot furnace |
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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: 20111207 Termination date: 20140426 |