CN101726561B - Method for measuring content of invalid mercury in fluorescent tube - Google Patents
Method for measuring content of invalid mercury in fluorescent tube Download PDFInfo
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- CN101726561B CN101726561B CN200910155656A CN200910155656A CN101726561B CN 101726561 B CN101726561 B CN 101726561B CN 200910155656 A CN200910155656 A CN 200910155656A CN 200910155656 A CN200910155656 A CN 200910155656A CN 101726561 B CN101726561 B CN 101726561B
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Abstract
The invention discloses a method for measuring the content of invalid mercury in a fluorescent tube. The method comprises the following steps of: connecting the fluorescent tube, which is turned on for a period of time and needs to measure the invalid mercury inside, with a direct current drive power supply; driving the fluorescent tube to be turned on by direct voltage provided by the direct current drive power supply to ensure that mercury ions evenly dispersed in a working gas medium in the fluorescent tube are directionally migrated to one end of the fluorescent tube connected with a negative electrode output end of the direct current drive power supply, and the end of the fluorescent tube connected with the negative electrode output end of the direct current drive power supply continuously gathers the mercury ions carrying positive charges; after 25 to 35 minutes, turning off the direct current drive power supply, wherein at that time, valid mercury and invalid mercury are separated; performing cooling coagulation positioning on the valid mercury; cutting open the fluorescent tube according to a standard that one divides into two; crushing and clearing up one end of the fluorescent tube containing the invalid mercury to obtain the content of the invalid mercury contained in the end; and calculating the total content of the invalid mercury in the fluorescent tube according to the content of the invalid mercury in the end. The method takes a short period of time and has a high efficiency.
Description
Technical field
The present invention relates to a kind of measuring technology of fluorescent tube, especially relate to the measuring method of content of invalid mercury in a kind of fluorescent tube.
Background technology
Mercury is an indispensable main material of making in the fluorescent energy-saving light tubes, and it is the actuating medium in the fluorescent tube, but mercury is again a big killer who brings severe environmental pollution.For reducing the pollution that mercury brings to environment, in recent years, correlative study personnel of the same trade develop little hg fluorescent lamp pipe in active research; But in process, can produce deviation usually; Cause fluorescent tube to contain impurity, these impurity can react with mercury, must make in the fluorescent tube a part of mercury after using the regular hour, can develop into mercury compound like this and lose efficacy; Mercury after the inefficacy can't produce ultraviolet ray; Be helpless to the luminous of fluorescent tube, if therefore the interior mercury of fluorescent tube adds very little, can be because the mercury inefficacy mechanism in the use cause fluorescent tube before rated wear arrives, just can't use.Therefore, be vital for how differentiating the situation that mercury lost efficacy in the fluorescent tube, the researchist has proposed the measuring method of various content of invalid mercury one after another for this reason, and the most frequently used measuring method has the temperature difference utilized to collect the method for mercury amount.Yet the existing method of utilizing the temperature difference to collect the mercury amount is feasible and effective theoretically, but it operates and need cost time of length, and generally the Measuring Time of each fluorescent tube need be spent about 24 hours, and efficient is lower.
Summary of the invention
Technical matters to be solved by this invention provides a kind of advantages of simplicity and high efficiency measuring method that can effectively measure the content of inefficacy mercury in the fluorescent tube.
The present invention solves the problems of the technologies described above the technical scheme that is adopted: the measuring method of content of invalid mercury in a kind of fluorescent tube may further comprise the steps:
1. need the fluorescent tube of measuring its internal content of invalid mercury to be connected after will having experienced the burning-point of a period of time with outside DC driven power supply; The cathode output end of DC driven power supply is put with fluorescent tube has an end of amalgam to be connected, and the cathode output end of DC driven power supply is connected with the end that fluorescent tube is not put amalgam;
2. the direct voltage drive fluorescent tube burning-point that provides with the DC driven power supply; Under direct voltage drive; Be dispersed in the end directional migration that the mercury ion in the working gas medium is connected to the cathode output end with the DC driven power supply in the fluorescent tube, the mercury ion of the continuous accumulation zone positive charge of an end that fluorescent tube is connected with the cathode output end of DC driven power supply;
3. after 25～35 minutes; When surpassing fluorescent tube total length fluorescent tube over half because of scarce mercury when not luminous; Close the DC driven power supply; At this moment, the cohesion of a end that fluorescent tube is connected with the cathode output end of DC driven power supply has a large amount of can produce ultraviolet effective mercury that can migration, has then preserved time in that fluorescent tube is inner because can not accomplish directional migration with the ultraviolet invalid mercury that can not produce of other impurity reactions as you werely;
4. use cooling medium to the fluorescent tube processing of lowering the temperature, effective mercury is solidified rapidly in fluorescent tube with good cooling effect;
5. according to GB/T23113-2008 " assay method of fluorescent light mercury content " fluorescent tube is cut from the middle part with being divided into two; Half fluorescent tube that fluorescent tube is connected with the cathode output end of DC driven power supply is placed in and carries out fragmentation in the container and clear up; Clear up the back and use the differential mercury vapor analyzer that the content of mercury in the solution is measured, the data that measure are the content of invalid mercury in 1/2nd the fluorescent tube;
6. calculate the total content of invalid mercury in the fluorescent tube, the total content of invalid mercury is the twice of the content of the invalid mercury that 5. measures of step in the fluorescent tube.
Described cooling medium is a liquid nitrogen.
Described differential mercury vapor analyzer is existing mercury vapor analyzer, and its model is WCG-208.
The working current that described DC voltage produces is 1～2 times of rated current of fluorescent tube.
Compared with prior art; The invention has the advantages that the direct voltage drive fluorescent tube burning-point that utilizes the DC driven power supply to provide, be dispersed in the end directional migration that the mercury ion in the working gas medium is connected to the cathode output end with the DC driven power supply in the fluorescent tube, the mercury ion of the continuous accumulation zone positive charge of an end that fluorescent tube is connected with the cathode output end of DC driven power supply thereby make; After 25～35 minutes; Close the DC driven power supply, isolated effective mercury and invalid mercury this moment, again through the location is solidified in effective mercury cooling; Cut fluorescent tube according to the standard that is divided into two; Broken and clear up to an end that only contains invalid mercury, measure and obtain the content of the invalid mercury that this end contains, thereby finally calculate the quantitative value of the invalid mercury in the whole fluorescent tube.Measuring method process of the present invention is simple, the time spent is short, efficient is high.Effective mercury is carried out temperature coolant can adopt cooling effect liquid nitrogen preferably, can guarantee that so effective mercury is set in an end of fluorescent tube preferably.The size of the DC voltage that outside DC driven power supply provides is according to concrete fluorescent tube decision, and the working current that requires DC voltage to produce is 1～2 times of rated current of fluorescent tube.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
The measuring method of content of invalid mercury in a kind of fluorescent tube that the present invention proposes, its concrete steps are following:
1. will experience the fluorescent tube that needs to test its internal failure mercury content behind the burning-point of a period of time is connected with outside DC driven power supply; The cathode output end of DC driven power supply is put with fluorescent tube has an end of amalgam (mercury alloy) to be connected, and the cathode output end of DC driven power supply is connected with the end that fluorescent tube is not put amalgam.
2. the direct voltage drive fluorescent tube burning-point that provides with the DC driven power supply; Under direct voltage drive; Be dispersed in the end directional migration that the mercury ion in the working gas medium is connected to the cathode output end with the DC driven power supply in the fluorescent tube, thus the mercury ion of the continuous accumulation zone positive charge of an end that fluorescent tube is connected with the cathode output end of DC driven power supply.
At this, the big I of the DC voltage that the DC driven power supply provides decides according to concrete fluorescent tube, only need guarantee that working current that DC voltage produces is that 1～2 times of rated current of fluorescent tube gets final product.
3. after 30 minutes; When surpassing fluorescent tube total length fluorescent tube over half, close the DC driven power supply, at this moment because of scarce mercury when not luminous; Fluorescent tube shows as effective mercury that the end cohesion that is connected with the cathode output end of DC driven power supply has a large amount of meeting migrations; These effective mercury are excited to produce ultraviolet ray, and ultraviolet ray is sent visible light through fluorescence excitation tube inner wall coating fluorescent powder, and an end that is connected with the cathode output end of DC driven power supply since no mercury or mercury and other impurity chemical combination lost activity; Unglazed output, whole like this fluorescent tube just obviously exist exposed conduit and hidden pipe.
4. use cooling medium to the fluorescent tube processing of lowering the temperature, effective mercury is solidified rapidly in fluorescent tube with good cooling effect.
At this, cooling medium can adopt liquid nitrogen, and liquid nitrogen has favorable cooling effect.
5. according to GB/T23113-2008 " assay method of fluorescent light mercury content " fluorescent tube is cut from the middle part with being divided into two; The end that fluorescent tube is connected with the cathode output end of DC driven power supply is placed in and carries out fragmentation in the container and clear up; Clear up the back and use WCG-208 differential mercury vapor analyzer that the mercury content of this end is measured, the data that measure are the content of invalid mercury in 1/2nd the fluorescent tube.
The content of the mercury of an end that 6. is connected with the cathode output end of DC driven power supply according to fluorescent tube; Can calculate the total content of invalid mercury in the fluorescent tube, the total content of invalid mercury is the twice of the content of the invalid mercury that 5. measures of step in the fluorescent tube.
Claims (3)
1. the measuring method of content of invalid mercury in the fluorescent tube is characterized in that may further comprise the steps:
1. need the fluorescent tube of measuring its internal content of invalid mercury to be connected after will having experienced the burning-point of a period of time with outside DC driven power supply; The cathode output end of DC driven power supply is put with fluorescent tube has an end of amalgam to be connected, and the cathode output end of DC driven power supply is connected with the end that fluorescent tube is not put amalgam;
2. the direct voltage drive fluorescent tube burning-point that provides with the DC driven power supply; Under direct voltage drive; Be dispersed in the end directional migration that the mercury ion in the working gas medium is connected to the cathode output end with the DC driven power supply in the fluorescent tube, the mercury ion of the continuous accumulation zone positive charge of an end that fluorescent tube is connected with the cathode output end of DC driven power supply;
The working current that described DC voltage produces is 1～2 times of rated current of fluorescent tube;
3. after 25～35 minutes; When surpassing fluorescent tube total length fluorescent tube over half because of scarce mercury when not luminous; Close the DC driven power supply; At this moment, the cohesion of a end that fluorescent tube is connected with the cathode output end of DC driven power supply has a large amount of can produce ultraviolet effective mercury that can migration, has then preserved time in that fluorescent tube is inner because can not accomplish directional migration with the ultraviolet invalid mercury that can not produce of other impurity reactions as you werely;
4. use cooling medium to the fluorescent tube processing of lowering the temperature, effective mercury is solidified rapidly in fluorescent tube with good cooling effect;
5. according to GB/T23113-2008 " assay method of fluorescent light mercury content " fluorescent tube is cut from the middle part with being divided into two; Half fluorescent tube that fluorescent tube is connected with the cathode output end of DC driven power supply is placed in and carries out fragmentation in the container and clear up; Clear up the back and use the differential mercury vapor analyzer that the content of mercury in the solution is measured, the data that measure are the content of invalid mercury in 1/2nd the fluorescent tube;
6. calculate the total content of invalid mercury in the fluorescent tube, the total content of invalid mercury is the twice of the content of the invalid mercury that 5. measures of step in the fluorescent tube.
2. the measuring method of content of invalid mercury in a kind of fluorescent tube according to claim 1 is characterized in that described cooling medium is a liquid nitrogen.
3. the measuring method of content of invalid mercury in a kind of fluorescent tube according to claim 1 is characterized in that described differential mercury vapor analyzer is existing mercury vapor analyzer, and its model is WCG-208.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910155656A CN101726561B (en) | 2009-12-24 | 2009-12-24 | Method for measuring content of invalid mercury in fluorescent tube |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910155656A CN101726561B (en) | 2009-12-24 | 2009-12-24 | Method for measuring content of invalid mercury in fluorescent tube |
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| CN101726561A CN101726561A (en) | 2010-06-09 |
| CN101726561B true CN101726561B (en) | 2012-10-24 |
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| CN200910155656A Expired - Fee Related CN101726561B (en) | 2009-12-24 | 2009-12-24 | Method for measuring content of invalid mercury in fluorescent tube |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042244U (en) * | 1988-08-20 | 1989-08-02 | 李德安 | Multi-pin and multi-filament fluorescent lamp |
| CN1083928A (en) * | 1992-09-09 | 1994-03-16 | 中国科学院沈阳应用生态研究所 | Oil phenol fluorescence analyser and utilize the quick oily phenol analytical approach of this analyser |
| CN2824032Y (en) * | 2005-02-02 | 2006-10-04 | 武汉大学 | Mercury tester |
-
2009
- 2009-12-24 CN CN200910155656A patent/CN101726561B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2042244U (en) * | 1988-08-20 | 1989-08-02 | 李德安 | Multi-pin and multi-filament fluorescent lamp |
| CN1083928A (en) * | 1992-09-09 | 1994-03-16 | 中国科学院沈阳应用生态研究所 | Oil phenol fluorescence analyser and utilize the quick oily phenol analytical approach of this analyser |
| CN2824032Y (en) * | 2005-02-02 | 2006-10-04 | 武汉大学 | Mercury tester |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2004-157007A 2004.06.03 |
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| CN101726561A (en) | 2010-06-09 |
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