CN109371464A - Produce solar energy polycrystalline silicon device for directionally solidifying - Google Patents
Produce solar energy polycrystalline silicon device for directionally solidifying Download PDFInfo
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- CN109371464A CN109371464A CN201811378264.5A CN201811378264A CN109371464A CN 109371464 A CN109371464 A CN 109371464A CN 201811378264 A CN201811378264 A CN 201811378264A CN 109371464 A CN109371464 A CN 109371464A
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- shell
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- solar energy
- polycrystalline silicon
- curved surface
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Classifications
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B28/00—Production of homogeneous polycrystalline material with defined structure
- C30B28/04—Production of homogeneous polycrystalline material with defined structure from liquids
- C30B28/06—Production of homogeneous polycrystalline material with defined structure from liquids by normal freezing or freezing under temperature gradient
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/02—Elements
- C30B29/06—Silicon
Abstract
The invention discloses production solar energy polycrystalline silicon device for directionally solidifying, including substrate, the substrate is equipped with complex protection sleeve, is used to accommodate in complex protection sleeve and places tubular graphite jig；The complex protection sleeve includes bottom plate, several curved surface side plates and stop collar; plate upper surface is circumferentially arranged with mounting groove; rubber gasket is equipped in mounting groove; it is fixed in the axial bottom end transition fit insertion mounting groove of several curved surface side plates; and the axial side of two curved surface side plates of arbitrary neighborhood seals against each other to agree with makes whole cylindrical structure, the columnar structured top side detachable that several curved surface side plates are constituted is arranged stop collar and is fixed；Bottom plate is equipped with cooler pan, and cooler pan with the bottom of graphite jig for contacting.Directional solidification set composite provided by the invention easily easy disassembly complex protection sleeve, it is convenient that impurity, inspection operation are purged to complex protection sleeve.
Description
Technical field
The present invention relates to polycrystalline silicon purifying technical fields, and in particular to a kind of production solar energy polycrystalline silicon is filled with directional solidification
It sets.
Background technique
Solar energy has become green energy resource of greatest concern at present, and polysilicon is current most widely used solar-electricity
Pond material.Solar grade polycrystalline silicon material is the important source material of solar battery, and solar battery can convert solar energy into
Electric energy, in today that conventional energy resource is in short supply, solar energy has huge application value.Currently, preparing solar energy in world wide
Battery has formed large-scale production with polycrystalline silicon material, and current main technological route has:
The development of solar photovoltaic industry is dependent on the purification to silicon raw material.During being purified to silicon raw material,
There are a crucial, essential links, are exactly oriented solidification purification, used directional solidification skill to silicon raw material
Art is widely used in field of metallurgy purification.Using the segregation coefficient in silicon raw material between silicon and metal impurities, there are larger differences
Silica crucible is slowly pulled out the thermal field of induction coil using water cooling ingot pulling mechanism using Bridgman method by this feature, solidifying
Gu during, the silicon liquid of crucible bottom end is first begin to solidify, to reach fractional condensation balance, silicon of the small impurity of segregation coefficient from solidification
It is middle to be gathered in liquid out to the continuous diffusive separation of liquid, as solidification constantly carries out, concentration of the metal impurities in liquid
It is higher and higher, it is finally solidified on the top of ingot casting, heat preservation for a period of time, makes each ingredient at relatively high temperatures after the completion of solidification
Sufficiently diffusion is finally removed the higher one end of metals content impurity, the polycrystalline silicon ingot casting purified with reaching fractional condensation balance.
Currently, during directional solidification, needing to install protective plate additional to the graphite jig for holding silicon raw material, being to prevent from producing
In the process silicon liquid leakage current, it is unrestrained furnace body is damaged, but existing protective sleeve is frequently with integral structure, it is not easy to assemble,
Remove sundries operation.
Summary of the invention
The technical problems to be solved by the present invention are: the existing protective sleeve to graphite jig protective effect is frequently with one
Body structure, not easy to assemble, removing sundries operation, uses the present invention provides the production solar energy polycrystalline silicon to solve the above problems and determines
To coagulation system.
The present invention is achieved through the following technical solutions:
Solar energy polycrystalline silicon device for directionally solidifying, including substrate are produced, the substrate is equipped with complex protection sleeve, multiple
It closes in protection sleeve and places tubular graphite jig for accommodating；The complex protection sleeve include bottom plate, several curved surface side plates and
Stop collar, for plate upper surface circumferentially arranged with mounting groove, mounting groove is interior to be equipped with rubber gasket, the axial bottom of several curved surface side plates
Hold it is fixed in transition fit insertion mounting groove, and the axial side of two curved surface side plates of arbitrary neighborhood seal against each other agree with make it is whole
The cylindrical structure of body, the columnar structured top side detachable that several curved surface side plates are constituted are arranged stop collar and are fixed；Bottom plate
It is equipped with cooler pan, cooler pan with the bottom of graphite jig for contacting.
Working principle of the present invention are as follows: first graphite jig is put into complex protection sleeve, graphite jig is added in silicon raw material
In, then complex protection sleeve and substrate are placed in burner hearth and are oriented Hirschfeld-Klinger reaction；Wherein complex protection sleeve body by
Bottom plate, several curved surface side plates and stop collar are constituted, and bottom plate is the bottom of complex protection sleeve, if the side wall of complex protection sleeve by
Dry medium surface side plate is spliced to form, fixed in the mounting groove after splicing on cylindrical in shape curved surface side plate bottom insertion bottom plate, by
In mounting groove on the one hand setting rubber gasket plays fastening effect to multiple curved surface side plates, connects simultaneously to curved surface side plate and bottom plate
The place of connecing seals, and top sets fixed multiple curved surface side plates by stop collar card, multiple curved surface side plates after agreeing with splicing
In firm integral structure.Easily easy disassembly complex protection sleeve, convenience are purged complex protection sleeve miscellaneous in this way
Matter, inspection operation.
Preferably, several curved surface side plates are equipped with the card slot and flange being mutually adapted, and adjacent two along axial side
Curved surface side plate agrees with place in card slot and flange and passes through rubber seal.
By being arranged card slot or flange on the side of each curved surface side plate, two adjacent curved surface side plane contact sides it
Between by card slot and flange splicing adaptation, increase contact cotton knot, and good sealing function played by rubber gasket.
Preferably, the end face of the stop collar towards bottom plate circumferentially offers positioning ring groove, the insertion positioning of curved surface side plate
In annular groove, the positioning ring groove is used to block the top for setting curved surface side plate,.
By opening up positioning ring groove on the bottom face of stop collar, on the one hand multiple curved surface side plates can be played good solid
It is set for using, stop collar is on the other hand also made to be fixed on the top of curved surface side plate, preventing axial movement influences overall stability.
Preferably, symmetrical limiting slot there are two being opened up on the inner wall of the stop collar, the extending direction of limiting slot
It is parallel with the axis direction of stop collar；Two are symmetrically arranged in the top sidewall of the graphite jig to be adapted to the limiting slot
Limited block, the limited block have been equipped with elevator groove.
It is embedded in limiting slot by opening up limiting slot on stop collar inner wall, and by the limited block on graphite jig, to stone
Black mold plays certain fixation, position-limiting action, prevents graphite jig from rotating, moving relative to protection sleeve, influences to heat
Effect.
Preferably, circumferentially arranged with fixed ring on the bottom surface of the cooler pan, the upper face of bottom plate be recessed with it is described solid
Determine the fixation annular groove of ring adaptation, the side wall of the fixed ring is equipped with sealing rubber pad, the sealing rubber pad transition fit pressure
Tightly between fixed ring and fixed annular groove.
Cooler pan is adapted to by fixed ring with fixed annular groove transition fit, realizes that cooler pan is detachable close on bottom plate
Envelope installation.
Preferably, the cooler pan includes discoid shell, and water inlet pipe is protruded into shell and protruded into through the bottom of shell
Partial free end and shell inner top surface are in sealing contact.Water inlet pipe protrudes on the intracorporal pipeline section side wall of shell and opens up several through-holes；Shell
In vivo using water inlet pipe as several heat conduction baffles of center of circle radial distribution, the board direction and shell axis direction of heat conduction baffle are hung down
Directly, the both sides up and down of heat conduction baffle are connected with shell inner bottom surface and top surface respectively；Length of the heat conduction baffle along radiation direction
Less than water inlet pipe outer wall to the linear distance between case inside wall；Several rows are offered along the bottom of sidewall edge in shell
Water hole；The output end of several drainage holes is connected to main sewer.
In use, cooling water is imported by water inlet pipe input terminal, cooling water, which flows into, is located at the intracorporal water inlet pipe pipeline section of shell, leads to
The through-hole crossed on water inlet pipe side wall enters in shell, due to shell by it is multiple radiation arrangement heat conduction baffles be divided into it is multiple
The cooling water flowing lumen of even radiation arrangement, is uniformly distributed into corresponding cooling water flowing lumen, simultaneously after the outflow of cooling water via through holes
It is discharged to the edge flowing of shell finally by drainage hole；Multiple heat conduction baffles considerably increase heat exchange area, and are arranged multiple
Cooling water flowing lumen is also conducive to increase the perturbation action of cooling water flow, improves heat exchange efficiency, therefore cooler pan provided by the present application
Heat transfer effect is good, cooling uniform.
Preferably, the bottom of the shell is equipped with collecting chamber, and the output end of the drainage hole and the input terminal of collecting chamber are led
Logical, the output end of collecting chamber is connected with drainpipe.
By the way that collecting chamber is arranged, cooling water is directly entered collecting chamber after the heat exchange being discharged in each drainage hole, ensures water flow
It recycles unimpeded.
Preferably, several traveling wheels are equipped with below the substrate.
Setting traveling wheel is moved easily overall structure disengaging burner hearth.
Preferably, the complex protection sleeve is made of high-temperature steel material, corundum or ceramics.
Preferably, heat conducting cover plate is equipped at the top of the complex protection sleeve, the heat conducting cover plate is equipped with air inlet pipe.
The present invention has the advantage that and the utility model has the advantages that
1, working principle of the present invention are as follows: first graphite jig is put into complex protection sleeve, graphite mo(u)ld is added in silicon raw material
In tool, then complex protection sleeve and substrate are placed in burner hearth and are oriented Hirschfeld-Klinger reaction；Wherein complex protection sleeve body
Be made of bottom plate, several curved surface side plates and stop collar, bottom plate is the bottom of complex protection sleeve, the side wall of complex protection sleeve by
Several curved surface side plates are spliced to form, fixed in the mounting groove after splicing on curved surface side plate bottom cylindrical in shape insertion bottom plate, are passed through
Rubber gasket is set in mounting groove, fastening effect on the one hand is played, simultaneously to curved surface side plate and bottom plate to multiple curved surface side plates
Junction seals, and top sets fixed multiple curved surface side plates by stop collar card, multiple curved sides after agreeing with splicing
Plate is in firm integral structure.Easily easy disassembly complex protection sleeve, convenience are purged complex protection sleeve in this way
Impurity, inspection operation；
2, the present invention is connect by the way that card slot or flange, two adjacent curved surface side plates are arranged on the side of each curved surface side plate
It touches between side through card slot and flange splicing adaptation, increases contact cotton knot, and good sealing is played by rubber gasket
Effect.By opening up positioning ring groove on the bottom face of stop collar, on the one hand good fixation can be played to multiple curved surface side plates
On the other hand effect also makes stop collar be fixed on the top of curved surface side plate, preventing axial movement influences overall stability；
3, for the present invention in use, cooling water is imported by water inlet pipe input terminal, cooling water, which flows into, is located at the intracorporal water inlet of shell
Pipe pipeline section is entered in shell by the through-hole on water inlet pipe side wall, since shell passes through the heat conduction baffle point of multiple radiation arrangements
It is divided into the cooling water flowing lumen of multiple homogeneous radiation arrangements, is uniformly distributed after the outflow of cooling water via through holes into corresponding cooling water
Flowing lumen is simultaneously discharged to the edge flowing of shell finally by drainage hole；Multiple heat conduction baffles considerably increase heat exchange area, and
Multiple cooling water flowing lumens are arranged also to be conducive to increase the perturbation action of cooling water flow, improve heat exchange efficiency, therefore the application provides
Cooler pan heat transfer effect it is good, cooling uniform.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is that entirety of the invention faces cross section structure schematic diagram；
Fig. 2 is bottom plate overlooking structure diagram of the invention；
Fig. 3 is that several curved surface side plates of the invention are connected state radial section structural schematic diagram；
Fig. 4 is stop collar schematic perspective view of the invention；
Fig. 5 is that cooler pan of the invention faces cross section structure schematic diagram；
Fig. 6 is the shell radial section structural schematic diagram of cooler pan of the present invention.
Label and corresponding parts title in attached drawing: 1- substrate, 2- complex protection sleeve, 3- graphite jig, 4- are cooling
Disk, 5- limited block, 6- play elevator groove, 7- fixed ring, the fixed annular groove of 8-, 9- shell, 10- water inlet pipe, 11- heat conduction baffle, 12- row
Water hole, 13- main sewer, 14- collecting chamber, 15- traveling wheel, 201- bottom plate, 202- curved surface side plate, 203- stop collar, 204- peace
Tankage, 205- card slot, 206- flange, 207- positioning ring groove, 208- limiting slot.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment 1
Present embodiments provide a kind of production solar energy polycrystalline silicon device for directionally solidifying, including substrate 1, the substrate 1
It is equipped with complex protection sleeve 2, is used to accommodate in complex protection sleeve 2 and places tubular graphite jig 3；The complex protection sleeve
2 include bottom plate 201, several curved surface side plates 202 and stop collar 203, and 201 upper surface of bottom plate is circumferentially arranged with mounting groove 204, installation
It is equipped with rubber gasket in slot 204, is fixed in the axial bottom end transition fit insertion mounting groove 204 of several curved surface side plates 202, and
The axial side of two curved surface side plates 202 of arbitrary neighborhood, which seals against each other to agree with, makes whole cylindrical structure, several curved sides
The columnar structured top side detachable that plate 202 is constituted is arranged stop collar 203 and is fixed；Bottom plate 201 is equipped with cooler pan 4, cold
But disk 4 with the bottom of graphite jig 3 for contacting.
Embodiment 2
Based on being further improved on the basis of embodiment 1, several curved surface side plates 202 are equipped with along axial side and are mutually adapted
Card slot 205 and flange 206, and two adjacent curved surface side plates 202 agree with place in card slot 205 and flange 206 and pass through rubber pad
Sealing.The stop collar 203 circumferentially offers positioning ring groove 207 towards the end face of bottom plate 201, and the positioning ring groove 207 is used
The top of curved surface side plate 202 is set in card；Symmetrical limiting slot 208 there are two being opened up on the inner wall of stop collar 203, limiting slot
208 extending direction is parallel with the axis direction of stop collar 203；Two are symmetrically arranged in the top sidewall of the graphite jig 3
The limited block 5 being adapted to the limiting slot 208, the limited block 5 have been equipped with elevator groove 6.
Embodiment 3
Based on being further improved on the basis of embodiment 2, circumferentially arranged with fixed ring 7, bottom on the bottom surface of the cooler pan 4
The upper face of plate 201 is recessed with the fixation annular groove 8 being adapted to the fixed ring 7, and the side wall of the fixed ring 7 is equipped with sealing rubber
Rubber mat, the sealing rubber pad transition fit are pressed between fixed ring 7 and fixed annular groove 8.
Embodiment 4
Based on being further improved on the basis of embodiment 3, the cooler pan 4 includes discoid shell 9, and water inlet pipe 10 runs through
The free end in shell 9 and protruding into part is protruded into the bottom of shell 9 and 9 inner top surface of shell is in sealing contact.Water inlet pipe 10 protrudes into shell
Several through-holes are opened up on pipeline section side wall in body 9；With water inlet pipe 10 for several heat conduction baffles of center of circle radial distribution in shell 9
11, the board direction of heat conduction baffle 11 is vertical with 9 axis direction of shell, and the both sides up and down of heat conduction baffle 11 are respectively and in shell 9
Bottom surface and top surface connect；Heat conduction baffle 11 is less than the outer wall of water inlet pipe 10 to 9 inner sidewall of shell along the length of radiation direction
Between linear distance；Several drainage holes 12 are offered along the bottom of sidewall edge in shell 9；The output end of several drainage holes 12
It is connected to main sewer 13.The bottom of the shell 9 is equipped with collecting chamber 14, output end and the collecting chamber 14 of the drainage hole 12
Input terminal conducting, the output end and drainpipe 13 of collecting chamber 14 are connected.
Embodiment 5
Based on being further improved on the basis of embodiment 1, several traveling wheels 15 are equipped with below the substrate 1；Complex protection
Sleeve 2 is made of high-temperature steel material, corundum or ceramics；Heat conducting cover plate is equipped at the top of complex protection sleeve 2, it is described thermally conductive
Cover board is equipped with air inlet pipe.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (10)
1. producing solar energy polycrystalline silicon device for directionally solidifying, including substrate (1), which is characterized in that the substrate (1) is equipped with
Complex protection sleeve (2), complex protection sleeve (2) is interior to place tubular graphite jig (3) for accommodating；The complex protection sleeve
It (2) include bottom plate (201), several curved surface side plates (202) and stop collar (203), bottom plate (201) upper surface is circumferentially arranged with installation
Slot (204), mounting groove (204) is interior to be equipped with rubber gasket, and the axial bottom end transition fit of several curved surface side plates (202) is embedded in peace
It is fixed in tankage (204), and the axial side of two curved surface side plates (202) of arbitrary neighborhood seal against each other agree with make it is whole in circle
Tubular construction, the columnar structured top side detachable that several curved surface side plates (202) are constituted are arranged stop collar (203) and are fixed；
Bottom plate (201) is equipped with cooler pan (4), and cooler pan (4) with the bottom of graphite jig (3) for contacting.
2. production solar energy polycrystalline silicon device for directionally solidifying according to claim 1, which is characterized in that several curved sides
Plate (202) is equipped with the card slot (205) and flange (206) being mutually adapted, and two adjacent curved surface side plates along axial side
(202) agree with place in card slot (205) and flange (206) and pass through rubber seal.
3. production solar energy polycrystalline silicon device for directionally solidifying according to claim 1, which is characterized in that the stop collar
(203) it is circumferentially offered positioning ring groove (207) towards the end face of bottom plate (201), the positioning ring groove (207) sets song for blocking
The top of surface side plate (202).
4. production solar energy polycrystalline silicon device for directionally solidifying according to claim 3, which is characterized in that the stop collar
(203) symmetrical limiting slot (208) there are two being opened up on inner wall, the extending direction and stop collar of limiting slot (208)
(203) axis direction is parallel；Two and the limiting slot (208) are symmetrically arranged in the top sidewall of the graphite jig (3)
The limited block (5) of adaptation, the limited block (5) have been equipped with elevator groove (6).
5. production solar energy polycrystalline silicon device for directionally solidifying according to claim 1, which is characterized in that the cooler pan
(4) circumferentially arranged with fixed ring (7) on bottom surface, the upper face of bottom plate (201) is recessed with to be consolidated with what the fixed ring (7) was adapted to
Determine annular groove (8), the side wall of the fixed ring (7) is equipped with sealing rubber pad, and the sealing rubber pad transition fit is pressed on solid
Determine between ring (7) and fixed annular groove (8).
6. production solar energy polycrystalline silicon device for directionally solidifying according to claim 1, which is characterized in that the cooler pan
It (4) include discoid shell (9), water inlet pipe (10) protrudes into shell (9) through the bottom of shell (9) and protrude into oneself of part
It is in sealing contact with shell (9) inner top surface by holding.Several through-holes are opened up on the pipeline section side wall that water inlet pipe (10) protrudes into shell (9)；
With water inlet pipe (10) for several heat conduction baffles of center of circle radial distribution (11) in shell (9), the board direction of heat conduction baffle (11)
Vertical with shell (9) axis direction, the both sides up and down of heat conduction baffle (11) contact company with shell (9) inner bottom surface and top surface respectively
It connects；Heat conduction baffle (11) is less than the outer wall of water inlet pipe (10) to the straight line between shell (9) inner sidewall along the length of radiation direction
Distance；Several drainage holes (12) are offered along the bottom of sidewall edge in shell (9)；The output end of several drainage holes (12) and row
Supply mains (13) connection.
7. production solar energy polycrystalline silicon device for directionally solidifying according to claim 6, which is characterized in that the shell
(9) bottom is equipped with collecting chamber (14), and the output end of the drainage hole (12) is connected with the input terminal of collecting chamber (14), collecting chamber
(14) output end and drainpipe (13) is connected.
8. production solar energy polycrystalline silicon device for directionally solidifying according to claim 1, which is characterized in that the substrate
(1) lower section is equipped with several traveling wheels (15).
9. production solar energy polycrystalline silicon device for directionally solidifying according to claim 1, which is characterized in that the compound guarantor
Pretective sleeve pipe (2) is made of high-temperature steel material, corundum or ceramics.
10. production solar energy polycrystalline silicon device for directionally solidifying according to claim 1, which is characterized in that described compound
It protects and is equipped with heat conducting cover plate at the top of sleeve (2), the heat conducting cover plate is equipped with air inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811378264.5A CN109371464B (en) | 2018-11-19 | 2018-11-19 | Directional solidification device for producing solar polycrystalline silicon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811378264.5A CN109371464B (en) | 2018-11-19 | 2018-11-19 | Directional solidification device for producing solar polycrystalline silicon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109371464A true CN109371464A (en) | 2019-02-22 |
| CN109371464B CN109371464B (en) | 2023-08-11 |
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ID=65389758
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811378264.5A Active CN109371464B (en) | 2018-11-19 | 2018-11-19 | Directional solidification device for producing solar polycrystalline silicon |
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| Country | Link |
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| CN (1) | CN109371464B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720306A (en) * | 2022-04-07 | 2022-07-08 | 水利部交通运输部国家能源局南京水利科学研究院 | Experiment system and method for silt starting and nutrient salt migration by bottom shearing force |
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| CN209338699U (en) * | 2018-11-19 | 2019-09-03 | 江苏斯力康科技有限公司 | Polysilicon directional freezing set composite |
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| CN101089537A (en) * | 2006-06-13 | 2007-12-19 | 台达电子工业股份有限公司 | Radiation module and its heat pipe |
| US20130036769A1 (en) * | 2010-04-29 | 2013-02-14 | Korea Research Institute Of Chemical Technology | High-output apparatus for manufacturing a polycrystal silicon ingot for a solar cell |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114720306A (en) * | 2022-04-07 | 2022-07-08 | 水利部交通运输部国家能源局南京水利科学研究院 | Experiment system and method for silt starting and nutrient salt migration by bottom shearing force |
| CN114720306B (en) * | 2022-04-07 | 2022-12-02 | 水利部交通运输部国家能源局南京水利科学研究院 | Experimental method for silt starting and nutrient salt migration by bottom shear force |
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| Publication number | Publication date |
|---|---|
| CN109371464B (en) | 2023-08-11 |
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