CN103165398A - Thorium-free tungsten electrode for halogen lamp - Google Patents
Thorium-free tungsten electrode for halogen lamp Download PDFInfo
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- CN103165398A CN103165398A CN2013101197667A CN201310119766A CN103165398A CN 103165398 A CN103165398 A CN 103165398A CN 2013101197667 A CN2013101197667 A CN 2013101197667A CN 201310119766 A CN201310119766 A CN 201310119766A CN 103165398 A CN103165398 A CN 103165398A
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- halogen lamp
- thorium
- tungsten electrode
- rhenium
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Abstract
The invention relates to a thorium-free tungsten electrode for a halogen lamp. The electrode is made of rhenium and tungsten materials, and rhenium accounts for 1-3% of the overall weight of raw materials. A method for preparing the thorium-free tungsten electrode for the halogen lamp can refer to a method for preparing a common thoriated tungsten electrode. A method for preparing the halogen lamp using the thorium-free tungsten electrode can also prefer to a method for preparing a halogen lamp in the prior art. As the work function of electrons added to the raw materials of the electrode is low and refractory precious metal rhenium without gamma radiation replaces thorium in the prior art, the electrode is high in luminous efficiency, fine in color reducibility, long in service life, fine in environmental performance and simple and convenient to use.
Description
Technical field
The present invention relates to the electric light source field, particularly a kind of Metal halogen lamp is used without thorium tungsten electrode.
Background technology
The 2000W Metal halogen lamp is widely used in stadiums and city square illumination.2008 Olympic Games and the Guangzhou Asian Games, China's a large amount of this kind of import light source normally carries out to guarantee race.Be used for the 2000W Metal halogen lamp of stage and video display illumination, except requiring the luminous efficiency height, topmost index is color rendering good (Ra＞90), photochromic high conformity, and in use procedure, the look drift is little.
The 2000W Metal halogen lamp is at home and abroad without unified standard at present.Germany's OSRAM2000W Metal halogen lamp (non-mechanism) luminous efficiency is high, and color rendering index is high, and surpass 1000 hours useful life, but expensive.Part 2000W Metal halogen lamp, nominal useful life 3000, as a child reality was difficult to reach more than 1000 hour.
Domestic enterprise has accumulated many experiences for many years in the research and development production process of 2000W Metal halogen lamp, but the luminous efficiency of most products is low, photochromic consistency is poor, light decay fast, the look drift is large, and useful life is short, and is very undesirable.
The 2000W Metal halogen lamp electrode used therein of lamp Corporation R ﹠ D processed production both at home and abroad mostly is the thorium tungsten electrode of thoriated 1%-2%, main cause is because the electron work functon of thorium is low, be conducive to the rapid startup of lamp, but thorium is a kind of radioelement, in decay process, thorium and decay daughter thereof are except discharging the α beta particle, also can disengage gamma-rays, according to IAEA and GB18871 regulation, in raw material, the specific activity＞1Bq/g of thorium will include government regulation in, need handle the radiation safety licence and can produce, manages and use.Consider from the angle of protection public health and earth environment, abolishing thorium tungsten electrode lamp processed is main trend.
Summary of the invention
Technical problem to be solved by this invention is for the deficiencies in the prior art, provides a kind of not thoriated essence, luminous efficiency is high, color reductibility good, the life-span is long, and the Metal halogen lamp that the feature of environmental protection is good is used without thorium tungsten electrode.
Technical problem to be solved by this invention is to realize by following technical scheme.The present invention is that a kind of Metal halogen lamp is used without thorium tungsten electrode, is characterized in: this electrode is made by rhenium and tungsten material, and wherein rhenium accounts for the 1-3% of raw material total weight.
Metal halogen lamp of the present invention is used without in thorium tungsten electrode: rhenium preferably accounts for the 1.2-2.5% of raw material total weight, further preferably accounts for 2% of raw material total weight.
Metal halogen lamp of the present invention is used without in thorium tungsten electrode: described electrode diameter is preferably 1.6-1.8mm.
Metal halogen lamp of the present invention is used without in thorium tungsten electrode: described electrode length is preferably 12-19mm.
Metal halogen lamp of the present invention is used can be with reference to the preparation method of thorium tungsten electrode commonly used without the preparation method of thorium tungsten electrode.Electrode of the present invention processing procedure before use is same as the prior art, generally passes through the steps such as soda boiling, electrolysis, Ultrasonic Cleaning, annealing in hydrogen atmosphere, warm high vacuum removal of impurities activation.Use the Metal halogen lamp of electrode of the present invention in the preparation, also can be with reference to the preparation method of Metal halogen lamp in prior art.
Compared with prior art, because the electron work functon that adds in electrode material is low, without gamma-emitting infusibility noble metal rhenium, substituted the thorium of prior art, the luminous efficiency of electrode of the present invention is high, color reductibility good, the life-span is long, and good environmental protection is easy to use.
Embodiment
Below further describe concrete technical scheme of the present invention, so that those skilled in the art understands the present invention further, and do not consist of its Copyright law.
Embodiment 1, and a kind of Metal halogen lamp is used without thorium tungsten electrode, and this electrode is made by rhenium and tungsten material, and wherein rhenium accounts for 1% of raw material total weight.
Embodiment 2, and a kind of Metal halogen lamp is used without thorium tungsten electrode, and this electrode is made by rhenium and tungsten material, and wherein rhenium accounts for 3% of raw material total weight.
Embodiment 3, and a kind of Metal halogen lamp is used without thorium tungsten electrode, and this electrode is made by rhenium and tungsten material, and wherein rhenium accounts for 1.2% of raw material total weight.
Embodiment 4, and a kind of Metal halogen lamp is used without thorium tungsten electrode, and this electrode is made by rhenium and tungsten material, and wherein rhenium accounts for 2.5% of raw material total weight.
Embodiment 5, and any one described Metal halogen lamp of embodiment 1-4 is used without in thorium tungsten electrode: described electrode diameter is 1.6-1.8mm.
Embodiment 6, and any one described Metal halogen lamp of embodiment 1-5 is used without in thorium tungsten electrode: the electrode length of described electrode is 12-19mm.
Embodiment 7, and a kind of Metal halogen lamp is used without thorium tungsten electrode, and this electrode is made by rhenium and tungsten material, and wherein rhenium accounts for 2% of raw material total weight; Described electrode diameter is 1.7mm; Electrode length is 15mm.
Use the present embodiment electrode, adopt conventional method to prepare 2000W American Standard Metal halogen lamp.Its test result is as follows:
Supply voltage/frequency: 380V/50HZ
Ignition position: level;
Modulating voltage (V): 253;
Lamp current (A): 8.21;
Lamp power (W): 1973;
Power factor: 0.95;
Luminous flux (Lm): during 245200(0);
Light efficiency (Lm/w): during 124(0); 106(100 hour); Average 115;
Color rendering index (Ra): 70;
Correlated colour temperature (K): 4500;
This lamp was lighted 2000 hours, and lux maintenance is 79%;
Modulating voltage (V): 129.
Use the present embodiment electrode, adopt conventional method to prepare 2000W Europe superscript Metal halogen lamp.Its test result is as follows:
Supply voltage/frequency: 220V/50HZ;
Modulating voltage (V): 129;
Lamp current (A): 15.7A;
Lamp power (W); 1823;
Power factor: 0.9;
Luminous flux (Lm): 213696;
Light efficiency (Lm/w): 117;
Color rendering index: 69.4;
Correlated colour temperature (K): 4400;
This lamp was lighted 2000 hours, and lux maintenance is 78%.
Claims (4)
1. a Metal halogen lamp is used without thorium tungsten electrode, it is characterized in that: this electrode is made by rhenium and tungsten material, and wherein rhenium accounts for the 1-3% of raw material total weight.
2. Metal halogen lamp according to claim 1 is used without thorium tungsten electrode, it is characterized in that: wherein rhenium accounts for the 1.2-2.5% of raw material total weight.
3. Metal halogen lamp according to claim 1 is used without thorium tungsten electrode, it is characterized in that: described electrode diameter is 1.6-1.8mm.
4. Metal halogen lamp according to claim 1 is used without thorium tungsten electrode, it is characterized in that: described electrode length is 12-19mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101197667A CN103165398A (en) | 2013-04-09 | 2013-04-09 | Thorium-free tungsten electrode for halogen lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101197667A CN103165398A (en) | 2013-04-09 | 2013-04-09 | Thorium-free tungsten electrode for halogen lamp |
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| Publication Number | Publication Date |
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| CN103165398A true CN103165398A (en) | 2013-06-19 |
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| CN2013101197667A Pending CN103165398A (en) | 2013-04-09 | 2013-04-09 | Thorium-free tungsten electrode for halogen lamp |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1337059A (en) * | 1999-11-11 | 2002-02-20 | 皇家菲利浦电子有限公司 | High-pressure gas discharge lamp |
| CN101150035A (en) * | 2006-09-22 | 2008-03-26 | 东芝照明技术株式会社 | High-pressure discharge lamp, high-pressure discharge lamp operating apparatus, and illuminating apparatus. |
| CN101167156A (en) * | 2005-04-27 | 2008-04-23 | 皇家飞利浦电子股份有限公司 | Discharge lamp with electrode made of tungsten alloy comprising 3 wt% of rhenium |
| JP2009087640A (en) * | 2007-09-28 | 2009-04-23 | Ushio Inc | Discharge lamp device |
| CN101640159A (en) * | 2009-08-12 | 2010-02-03 | 朱惠冲 | Electrode main-post material of rhenium-tungsten filaments, and applications thereof |
| CN101826438A (en) * | 2009-03-03 | 2010-09-08 | 江苏森莱浦光电科技有限公司 | High-performance electrode for high-strength gas discharge lamp |
-
2013
- 2013-04-09 CN CN2013101197667A patent/CN103165398A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1337059A (en) * | 1999-11-11 | 2002-02-20 | 皇家菲利浦电子有限公司 | High-pressure gas discharge lamp |
| CN101167156A (en) * | 2005-04-27 | 2008-04-23 | 皇家飞利浦电子股份有限公司 | Discharge lamp with electrode made of tungsten alloy comprising 3 wt% of rhenium |
| CN101150035A (en) * | 2006-09-22 | 2008-03-26 | 东芝照明技术株式会社 | High-pressure discharge lamp, high-pressure discharge lamp operating apparatus, and illuminating apparatus. |
| JP2009087640A (en) * | 2007-09-28 | 2009-04-23 | Ushio Inc | Discharge lamp device |
| CN101826438A (en) * | 2009-03-03 | 2010-09-08 | 江苏森莱浦光电科技有限公司 | High-performance electrode for high-strength gas discharge lamp |
| CN101640159A (en) * | 2009-08-12 | 2010-02-03 | 朱惠冲 | Electrode main-post material of rhenium-tungsten filaments, and applications thereof |
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Application publication date: 20130619 |