CN201793815U - Temperature thermocouple sleeve evacuating device of photovoltaic polycrystalline silicon ingot furnace - Google Patents
Temperature thermocouple sleeve evacuating device of photovoltaic polycrystalline silicon ingot furnace Download PDFInfo
- Publication number
- CN201793815U CN201793815U CN2010205021571U CN201020502157U CN201793815U CN 201793815 U CN201793815 U CN 201793815U CN 2010205021571 U CN2010205021571 U CN 2010205021571U CN 201020502157 U CN201020502157 U CN 201020502157U CN 201793815 U CN201793815 U CN 201793815U
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- Prior art keywords
- temperature thermocouple
- sleeve pipe
- vacuum
- thermocouple sleeve
- temperature
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- 229910021420 polycrystalline silicon Inorganic materials 0.000 title claims abstract description 24
- 238000005266 casting Methods 0.000 claims abstract description 10
- 230000001012 protector Effects 0.000 claims description 18
- 238000005086 pumping Methods 0.000 claims description 16
- 238000010792 warming Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 abstract 2
- 238000011161 development Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000002210 silicon-based material Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910001928 zirconium oxide Inorganic materials 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000013083 solar photovoltaic technology Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
- 229940043774 zirconium oxide Drugs 0.000 description 1
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Abstract
The utility model relates to a temperature thermocouple sleeve evacuating device of a photovoltaic polycrystalline silicon ingot furnace, and belongs to the technical field of evacuating automation of photovoltaic polycrystalline silicon ingot furnaces. The device comprises a temperature-controlled temperature thermocouple sleeve, an overheat protection temperature thermocouple sleeve, a vacuum pump set, and a sleeve evacuating valve, a temperature-controlled temperature thermocouple manual valve and an overheat protection temperature thermocouple manual valve which communicate the temperature-controlled temperature thermocouple sleeve and the overheat protection temperature thermocouple sleeve and the vacuum pump set through vacuum pipelines; the device also comprises an evacuating valve for communicating the photovoltaic polycrystalline silicon ingot furnace cavity and a vacuum pump through a vacuum pipeline, and an exhaust valve connected on the vacuum pipeline; the upper end of the temperature-controlled temperature thermocouple sleeve is fixed at the top of the furnace body, and the lower end of the temperature-controlled temperature thermocouple sleeve is inserted into a heat insulation cover of a heater through a heat insulation plate; and the overheat protection temperature thermocouple sleeve is fixed on the furnace body and inserted into the furnace cavity. The device improves the evacuating speed of the integral equipment, and can quickly find a leakage point, shorten the ingot casting period and improve the ingot quality.
Description
Technical field
The utility model belongs to the technical field of automation that vacuumizes of photovoltaic polycrystalline silicon ingot or purifying furnace, relates to photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe vacuum extractor.
Background technology
Sun power is most important basic power source in the various renewable energy sources, and biomass energy, wind energy, sea energy, water energy etc. are all from sun power, and in a broad sense, sun power comprises above various renewable energy source.Sun power is a kind of as renewable energy source, then is meant the direct conversion and the utilization of sun power.By transfer equipment solar radiant energy is converted to the solar energy utilization technique that belongs to of heat energy utilization, utilize the solar energy thermal-power-generating that is called that heat energy generates electricity again; Belong to the solar energy generation technology to what solar radiant energy converted utilization of power to by photoelectric conversion device, photoelectric conversion device normally utilizes the photovoltaic effect principle of semiconducter device (solar cell) to carry out opto-electronic conversion, therefore claims solar-photovoltaic technology again.
United Nations has held a series of summit meetings that have the various countries leader to participate in, and discussion and formulation world's sun power strategic planning, international sun power pact are set up international sun power fund etc., promote the development and use of global solar and renewable energy source.Development and use sun power and renewable energy source become a big theme and the common action of international community, become the important content that various countries formulate the strategy of sustainable development.In State Commission for Restructuring the Economic Systems is listed research and development sun power and renewable energy technologies always by Chinese Government, has promoted the development of sun power and renewable energy technologies and industry greatly.Solar utilization technique is being researched and developed, is being commercially produced, all obtaining tremendous development aspect the market development, becomes fast, one of the new industry of steady progression.
Because silicon materials account for the overwhelming majority in the solar cell cost, the cost that reduces silicon materials is the key of photovoltaic application.The polycrystalline silicon ingot casting technology is one of important channel that reduces the solar cell cost, and this technology has been saved expensive crystal-pulling process, also can use than the silicon of low-purity and make to throw furnace charge, and material and power consumption aspect are all economized.Casting ingot process mainly contains two kinds of directional solidification method and teeming practices.Directional solidification method is that the silicon material is placed in the crucible in addition fusion, and the pulling speed of controlling stay-warm case then forms low-temperature receiver to cause certain thermograde from crucible bottom, makes solid-liquid interface move up and form crystal ingot from crucible bottom.
At present, the work of photovoltaic polycrystalline silicon ingot or purifying furnace is finished under condition of negative pressure, will vacuumize stove before the beginning ingot casting, checks whether stove has leakage.The temperature of photovoltaic polycrystalline silicon ingot or purifying furnace is to adopt thermopair to inject furnace chamber to measure, and in order to protect thermopair and to prolong thermopair work-ing life, the thermopair outside also is with the internal layer tubular zirconium-oxide and outer oxide aluminum pipe sleeve pipe is protected.After the long-time use of thermopair, leaking often appears in its outer oxide aluminum pipe sleeve pipe, causes the photovoltaic polycrystalline silicon ingot or purifying furnace that leakage is arranged, and can't finish the index that vacuumizes, and stove also just can not normally use.Ingot casting cycle and ingot quality have been influenced.
Summary of the invention
The purpose of this utility model is for overcoming the weak point of prior art, proposing a kind of photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe vacuum extractor.The utility model purport is to establish a cover temperature thermocouple sleeve pipe vacuum extractor on body of heater in addition, realizes furnace chamber and temperature thermocouple sleeve pipe are vacuumized respectively, judges leakage point easily, realizes the rapid vacuumizing of photovoltaic polycrystalline silicon ingot or purifying furnace.The utility model vacuumizes by photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe, has improved the integral device vacuum pumping rate, can find leakage point fast, shortens the ingot casting cycle and improves ingot quality.
Photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe vacuum extractor of the present utility model; it is characterized in that; this device comprises: temperature control temperature thermocouple sleeve pipe; overheat protector temperature thermocouple sleeve pipe; the vacuum pump group with by vacuum-lines with temperature control temperature thermocouple sleeve pipe; the sleeve pipe vacuum pumping valve that overheat protector temperature thermocouple sleeve pipe is communicated with the vacuum pump group; temperature control temperature thermocouple manual valve and overheat protector temperature thermocouple manual valve; also comprise the vacuum pumping valve that photovoltaic polycrystalline silicon ingot casting furnace chamber is communicated with the vacuum pump group by vacuum-lines; and be connected vent valve on the vacuum-lines; this temperature control temperature thermocouple sleeve pipe upper end is the body of heater top fixedly; the lower end is inserted into by warming plate in the stay-warm case of well heater, and this overheat protector temperature thermocouple sleeve pipe is fixed on the body of heater and is inserted in the furnace chamber.
Characteristics of the present utility model and beneficial effect:
The utility model is set up a cover temperature thermocouple sleeve pipe vacuum extractor on body of heater 1, realization vacuumizes respectively furnace chamber and temperature thermocouple telescopic, realize the rapid vacuumizing of photovoltaic polycrystalline silicon ingot or purifying furnace integral body, can also find leakage point fast, shorten the ingot casting cycle and improve ingot quality.
Description of drawings
Fig. 1 is photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe vacuum means interposed structure of the present utility model and assembling synoptic diagram;
Fig. 2 is the thermopair and the sleeve structure figure of photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe vacuum extractor of the present utility model
Embodiment
The photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe vacuum extractor that the utility model proposes reaches embodiment in conjunction with the accompanying drawings and is described in detail as follows:
Photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe vacuum means interposed structure embodiment of the present utility model as shown in Figure 1.This device comprises: temperature control temperature thermocouple sleeve pipe 2; overheat protector temperature thermocouple sleeve pipe 3; vacuum pump group 7 with by vacuum-lines with temperature control temperature thermocouple sleeve pipe 2; the sleeve pipe vacuum pumping valve 8 that overheat protector temperature thermocouple sleeve pipe 3 is communicated with vacuum pump group 7; temperature control temperature thermocouple manual valve 9 and overheat protector temperature thermocouple manual valve 10; also comprise the vacuum pumping valve 6 that photovoltaic polycrystalline silicon ingot casting furnace chamber is communicated with vacuum pump group 7 by vacuum-lines; and be connected vent valve 11 on the vacuum-lines; these temperature control temperature thermocouple sleeve pipe 2 upper ends are the body of heater top fixedly; the lower end is inserted into by warming plate 4 in the stay-warm case of well heater 5, and this overheat protector temperature thermocouple sleeve pipe 3 is fixed on the body of heater 1 and is inserted in the furnace chamber.
The temperature control temperature thermocouple sleeve pipe 2 of present embodiment is identical with the structure of overheat protector temperature thermocouple sleeve pipe 3, as shown in Figure 2, mainly by thermocouple wire 12, thermopair outer layer sleeve 13, thermopair inner layer sleeve 14, thermopair sealing-ring 15 is formed; Thermocouple wire 12 is fixed in the thermopair inner layer sleeve 14, and the space in the thermopair inner layer sleeve 14 links to each other with vacuum pump group 7.
The thermopair inner layer sleeve 14 of present embodiment is an alumina tube, and thermopair outer layer sleeve 13 is tubular zirconium-oxides.
Each parts of in the present embodiment other all adopt conventional products.
Principle of work of the present utility model is as follows:
Vacuum in the furnace chamber: start vacuum pump group 7, close sleeve pipe vacuum pumping valve 8, open vacuum pumping valve 6, be evacuated down to and close vacuum pumping valve 6 below 0.8 handkerchief, it is qualified with next leak detection that the pressure of hunting leak after 300 seconds increases by 0.8 handkerchief, otherwise furnace chamber has leakage.
Temperature control temperature thermocouple sleeve pipe 2 vacuum: start vacuum pump group 7; close vacuum pumping valve 6; open sleeve pipe vacuum pumping valve 8; open temperature control temperature thermocouple manual valve 9; close overheat protector temperature thermocouple manual valve 10, close vent valve 11, be evacuated down to and close sleeve pipe vacuum pumping valve 8 below 0.8 handkerchief; it is qualified with next leak detection that the pressure of hunting leak after 300 seconds increases by 0.8 handkerchief, otherwise temperature control temperature thermocouple sleeve pipe 2 has leakage.
Overheat protector temperature thermocouple sleeve pipe 3 vacuum: start vacuum pump group 7; close vacuum pumping valve 6; open sleeve pipe vacuum pumping valve 8; close temperature control temperature thermocouple manual valve 9; open overheat protector temperature thermocouple manual valve 10, close vent valve 11, be evacuated down to and close sleeve pipe vacuum pumping valve 8 below 0.8 handkerchief; it is qualified with next leak detection that the pressure of hunting leak after 300 seconds increases by 0.8 handkerchief, otherwise overheat protector temperature thermocouple sleeve pipe 3 has leakage.
Claims (2)
1. photovoltaic polycrystalline silicon ingot or purifying furnace temperature thermocouple sleeve pipe vacuum extractor; it is characterized in that; this device comprises: temperature control temperature thermocouple sleeve pipe; overheat protector temperature thermocouple sleeve pipe; the vacuum pump group with by vacuum-lines with temperature control temperature thermocouple sleeve pipe; the sleeve pipe vacuum pumping valve that overheat protector temperature thermocouple sleeve pipe is communicated with the vacuum pump group; temperature control temperature thermocouple manual valve and overheat protector temperature thermocouple manual valve; also comprise the vacuum pumping valve that photovoltaic polycrystalline silicon ingot casting furnace chamber is communicated with the vacuum pump group by vacuum-lines; and be connected vent valve on the vacuum-lines; this temperature control temperature thermocouple sleeve pipe upper end is the body of heater top fixedly; the lower end is inserted into by warming plate in the stay-warm case of well heater, and this overheat protector temperature thermocouple sleeve pipe is fixed on the body of heater and is inserted in the furnace chamber.
2. device as claimed in claim 1 is characterized in that, described temperature control temperature thermocouple sleeve pipe or overheat protector temperature thermocouple sleeve pipe be mainly by thermocouple wire, the thermopair outer layer sleeve, and the thermopair inner layer sleeve, the thermopair sealing-ring is formed; Thermocouple wire is fixed in the thermopair inner layer sleeve, and the space in the thermopair inner layer sleeve links to each other with the vacuum pump group.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205021571U CN201793815U (en) | 2010-08-23 | 2010-08-23 | Temperature thermocouple sleeve evacuating device of photovoltaic polycrystalline silicon ingot furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205021571U CN201793815U (en) | 2010-08-23 | 2010-08-23 | Temperature thermocouple sleeve evacuating device of photovoltaic polycrystalline silicon ingot furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201793815U true CN201793815U (en) | 2011-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205021571U Expired - Lifetime CN201793815U (en) | 2010-08-23 | 2010-08-23 | Temperature thermocouple sleeve evacuating device of photovoltaic polycrystalline silicon ingot furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201793815U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942697A (en) * | 2010-08-23 | 2011-01-12 | 清华大学 | Evacuating device of temperature thermocouple casing of photovoltaic polycrystalline silicon ingot casting furnace |
| CN102703967A (en) * | 2012-06-05 | 2012-10-03 | 湖南红太阳光电科技有限公司 | Thermocouple device for polycrystal ingot furnace |
-
2010
- 2010-08-23 CN CN2010205021571U patent/CN201793815U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942697A (en) * | 2010-08-23 | 2011-01-12 | 清华大学 | Evacuating device of temperature thermocouple casing of photovoltaic polycrystalline silicon ingot casting furnace |
| CN101942697B (en) * | 2010-08-23 | 2012-11-14 | 清华大学 | Evacuating device of temperature thermocouple casing of photovoltaic polycrystalline silicon ingot casting furnace |
| CN102703967A (en) * | 2012-06-05 | 2012-10-03 | 湖南红太阳光电科技有限公司 | Thermocouple device for polycrystal ingot furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110413 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |