CN203772736U - Anti-interference mercury vapor measuring device - Google Patents
Anti-interference mercury vapor measuring device Download PDFInfo
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- CN203772736U CN203772736U CN201420199480.4U CN201420199480U CN203772736U CN 203772736 U CN203772736 U CN 203772736U CN 201420199480 U CN201420199480 U CN 201420199480U CN 203772736 U CN203772736 U CN 203772736U
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Abstract
The utility model discloses an anti-interference mercury vapor measuring device. A mercury lamp light source is arranged between two permanent magnets, a convex lens is positioned right above the mercury lamp light source, a hollow shaft motor is arranged above the convex lens, an output shaft at the lower end of the hollow shaft motor is connected with a Taylor prism, an output shaft at the upper end of the hollow shaft motor is connected with two phase detection devices, a semi-permeable and semi-reflective vacuum coating mirror is positioned above the two phase detection devices, two photoelectric detectors are respectively positioned above the semi-permeable and semi-reflective vacuum coating mirror and on the side surface of the semi-permeable and semi-reflective vacuum coating mirror, wherein a tubular absorption chamber is arranged between the photoelectric detector on the side surface and the semi-permeable and semi-reflective vacuum coating mirror. The anti-interference mercury vapor measuring device disclosed by the utility model solves the problem that strong optical interference can be caused as gas which is released during heat release of a solid sample and contain complex components enters an optical absorption tank of an instrument; therefore, high-precision detection of concentration content of mercury by deduction of background can be realized and the accuracy of mercury vapor measurement can be improved effectively.
Description
Technical field:
The utility model relates to mercury vapour measurement mechanism technical field, is specially a kind of anti-interference mercury vapour measurement mechanism.
Background technology:
Mercury is a kind of at the wide hypertoxicity trace element of occurring in nature distributed pole, and it has volatility and accumulation property, and when solid sample heat is released, the gas that can discharge complicated component enters in instrumental optics absorption cell, causes strong optical interference.
At present, the technology that overcomes gas interference during both at home and abroad for detection of mercury has three kinds:
1, gold amalgam technology, carries out selectivity absorption with spun gold mercury-traping tube to the mercury vapour in sample gas, thereby separates with other interference gas, and then pyrolysis spun gold mercury-traping tube analyzes, and shortcoming is to use noble metal expense higher;
2, utilize the longitudinal Zeeman effect technology of isotope mercury lamp light source, isotope mercury lamp light source is also divided into two polarized lights by magnetic force direction in magnetic field, utilizes one of them to analyze, another background correction, and shortcoming is that mercury light source is made very difficult;
3, the chemo-selective adsorption technology of interference gas, add chemosorbent to remove in instrument air intake opening front, method is simple, but reagent is generally strong oxidizer and highly basic, use and preserve very difficultly, and also having easy pollution, corrosion and explosive defect.
Therefore, be badly in need of a kind of anti-interference mercury vapour measurement mechanism that complicated gas disturbs of removing.
Summary of the invention:
The purpose of this utility model is exactly for above-mentioned the deficiencies in the prior art, a kind of anti-interference mercury vapour measurement mechanism is provided, improve stability of instrument, reject the interference such as sulphuric dioxide a small amount of in sample, carbon dioxide, water vapor, improved the accuracy that mercury vapour is measured.
The purpose of this utility model is achieved through the following technical solutions:
A kind of anti-interference mercury vapour measurement mechanism, comprise mercury lamp light source, two permanent magnets, convex lens, Taylor prism, hollow shaft motor, two phase detection devices, semi-transparent semi-reflecting vacuum coating mirror, two photoelectric detectors, mercury lamp light source is arranged between two permanent magnets, convex lens are positioned at directly over mercury lamp light source, above convex lens, be provided with hollow shaft motor, the upper and lower two ends of hollow shaft motor are equipped with output shaft, the output shaft of hollow shaft motor lower end is connected with Taylor prism, the output shaft of hollow shaft motor upper end is connected with two phase detection devices, semi-transparent semi-reflecting vacuum coating mirror is positioned at the top of two phase detection devices, two photoelectric detectors lay respectively at top and the side of semi-transparent semi-reflecting vacuum coating mirror, wherein between ambient light photodetector and semi-transparent semi-reflecting vacuum coating mirror, be provided with tubulose absorption chamber, tubulose absorption chamber two ends are sealed by saturating ultraviolet piezoid, photoelectric detector is all connected with conditioning testing circuit, conditioning testing circuit is by the modulate circuit connecting successively, log-transformation circuit, amplifying circuit is connected with data collector.
Preferably, mercury lamp light source is made up of Miniature low voltage electrodeless mercury lamp, and mercury lamp light source is placed in the 15 kilogauss strong permanent magnetic fields that two permanent magnets produce, and produces the pure line source of wave spectrum, and wavelength is 253.7 nanometers.
Preferably, two phase detection devices are respectively π component phase detection device and σ component phase detection device.
Preferably, tubulose absorption chamber is stainless-steel tube or fused quartz tube.
In the utility model, Taylor prism is that the spectrum of division is carried out separating in time domain, semi-transparent semi-reflecting vacuum coating mirror makes to be divided into two-way by the mercury line of Taylor prism, one drive test amount lamp source changes, the tubulose absorption chamber of separately leading up to detects mercury concentration, tubulose absorption chamber two ends seal with saturating ultraviolet piezoid, making mercury vapour absorbing wavelength is the light of 253.7 nanometers, carry out energy level transition, photoelectric detector converts the different light signal detecting to different electric signal, conditioning testing circuit passes photoelectric detector the signal condition of coming, log-transformation, amplify, finally reach data collector.
The utility model has solved the gas that discharges complicated component when solid sample heat is released and has entered in instrumental optics absorption cell, causes strong optical interference problem, realizes the content of high precision button background detection mercury concentration, effectively improves the accuracy that mercury vapour is measured.The utility model is based on transverse zeeman effect, improve stability of instrument, reject sulphuric dioxide a small amount of in sample, carbon dioxide, water vapor etc., utilizing electrodless discharge utmost point lamp or the minisize capillary pipe lamp that the pure mercury of common simple substance and inert gas are filling material is light source permanent magnetic field transverse zeeman effect principle, adopts single lamp dual wavelength, double light path four electric circuit inspection technology to realize background correction when Trace Hg in sulfur-bearing, carbon and other harmful gases is tested.
The utility model adopts Zeeman effect that mercury lamp light source is placed in to constant high-intensity magnetic field, divide absorbing wavelength (π light) and reference wavelength (σ light), the analyzing technology of recycling light, in time domain, the light of two kinds of wavelength is separated, utilize and absorb comparing and measuring of linear light and reference linear light, eliminate the impact causing absorbing light beam producing in sample analysis process, make the content of the real result reaction Hg analyzing.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the theory diagram of the utility model conditioning testing circuit.
In figure: 1, mercury lamp light source, 2, permanent magnet, 3, convex lens, 4, Taylor prism, 5, air-cored axis's motor, 6, phase detection device, 7, semi-transparent semi-reflecting vacuum coating mirror, 8, photoelectric detector, 9, ultraviolet piezoid thoroughly, 10, stainless-steel tube or fused quartz tube absorption chamber, 11, conditioning testing circuit, 12, data collector, 13, modulate circuit, 14, log-transformation circuit, 15, amplifying circuit.
Embodiment
Be described in further detail below in conjunction with drawings and Examples
As Fig. 1, shown in Fig. 2, a kind of anti-interference mercury vapour measurement mechanism, comprise mercury lamp light source 1, two permanent magnets 2, convex lens 3, Taylor prism 4, hollow shaft motor 5, two phase detection devices 6, semi-transparent semi-reflecting vacuum coating mirror 7, two photoelectric detectors 8, mercury lamp light source 1 is arranged between two permanent magnets 2, convex lens 3 are positioned at directly over mercury lamp light source 1, above convex lens 3, be provided with hollow shaft motor 5, hollow shaft motor is equipped with output shaft in two ends Shang Xia 5, the output shaft of hollow shaft motor 5 lower ends is connected with Taylor prism 4, the output shaft of hollow shaft motor 5 upper ends is connected with two phase detection devices 6, two phase-detection dresses, 6 are respectively π component phase detection device and σ component phase detection device, semi-transparent semi-reflecting vacuum coating mirror 7 is positioned at the top of two phase detection devices 6, two photoelectric detectors 8 lay respectively at top and the side of semi-transparent semi-reflecting vacuum coating mirror 7, wherein between ambient light photodetector 8 and semi-transparent semi-reflecting vacuum coating mirror 7, be provided with tubulose absorption chamber 10, tubulose absorption chamber 10 two ends are sealed by saturating ultraviolet piezoid 9, photoelectric detector 8 is all connected with conditioning testing circuit 11, conditioning testing circuit 11 is by the modulate circuit 13 connecting successively, log-transformation circuit 14, amplifying circuit 15 is connected with data collector 12.
The utility model principle of work is as follows: the wavelength that mercury lamp light source 1 sends is under the large magnetic fields that produces at permanent magnet 2 of 253.7 nanometer spectral lines, spectrum along vertical magnetic field direction transmitting divides, produce polarization direction be parallel to the π linearly polarized light of magnetic direction and perpendicular to the σ of magnetic direction-, σ+linearly polarized light produces and divides.What division light became directional light by convex lens 3 enters Taylor prism 4, Taylor prism 4 separates π component in time with σ component under air-cored axis's motor 5 drives, then make light be divided into two-way through semi-transparent semi-reflecting vacuum coating mirror 7, one road is until measure lamp source and change in the photoelectric detector 8 of top, the tubulose absorption chamber 7 of side of separately leading up to detects mercury concentration again to the photoelectric detector 8 of side.Be provided with the phase place of phase detection device 6 perception Polarization Detection at the other end of hollow motor simultaneously.Utilize the not tested gas mercury atom of σ component to absorb only by the characteristic of background absorption, control testing circuit enlargement factor.Light signal converts respectively different electrical signals at two-way photoelectric detector 8 and reaches conditioning testing circuit 11, finally enters data collector 12 through logarithm variation and amplifying signal.
The utility model adopts Zeeman effect that mercury lamp light source 1 is placed in to constant strong permanent magnetic field, divide absorbing wavelength (π light) and reference wavelength (σ light), the analyzing technology of recycling light, in time domain, the light of two kinds of wavelength is separated, utilize and absorb comparing and measuring of linear light and reference linear light, eliminate the impact causing absorbing light beam producing in sample analysis process, make the content of the real result reaction Hg analyzing.
The above; it is only preferably embodiment of the utility model; but protection domain of the present utility model is not limited to this; any be familiar with those skilled in the art the utility model disclose technical scope in; be equal to replacement or changed according to the technical solution of the utility model and utility model design thereof, within all should being encompassed in protection domain of the present utility model.
Claims (4)
1. an anti-interference mercury vapour measurement mechanism, it is characterized in that, comprise mercury lamp light source, two permanent magnets, convex lens, Taylor prism, hollow shaft motor, two phase detection devices, semi-transparent semi-reflecting vacuum coating mirror, two photoelectric detectors, mercury lamp light source is arranged between two permanent magnets, convex lens are positioned at directly over mercury lamp light source, above convex lens, be provided with hollow shaft motor, the upper and lower two ends of hollow shaft motor are equipped with output shaft, the output shaft of hollow shaft motor lower end is connected with Taylor prism, the output shaft of hollow shaft motor upper end is connected with two phase detection devices, semi-transparent semi-reflecting vacuum coating mirror is positioned at the top of two phase detection devices, two photoelectric detectors lay respectively at top and the side of semi-transparent semi-reflecting vacuum coating mirror, wherein between ambient light photodetector and semi-transparent semi-reflecting vacuum coating mirror, be provided with tubulose absorption chamber, tubulose absorption chamber two ends are sealed by saturating ultraviolet piezoid, photoelectric detector is all connected with conditioning testing circuit, conditioning testing circuit is by the modulate circuit connecting successively, log-transformation circuit, amplifying circuit is connected with data collector.
2. anti-interference mercury vapour measurement mechanism according to claim 1, is characterized in that, mercury lamp light source is made up of Miniature low voltage electrodeless mercury lamp.
3. anti-interference mercury vapour measurement mechanism according to claim 1, is characterized in that, two phase detection devices are respectively π component phase detection device and σ component phase detection device.
4. anti-interference mercury vapour measurement mechanism according to claim 1, is characterized in that, tubulose absorption chamber is stainless-steel tube or fused quartz tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199480.4U CN203772736U (en) | 2014-04-18 | 2014-04-18 | Anti-interference mercury vapor measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420199480.4U CN203772736U (en) | 2014-04-18 | 2014-04-18 | Anti-interference mercury vapor measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN203772736U true CN203772736U (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420199480.4U Expired - Fee Related CN203772736U (en) | 2014-04-18 | 2014-04-18 | Anti-interference mercury vapor measuring device |
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| Country | Link |
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| CN (1) | CN203772736U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353263A (en) * | 2015-07-16 | 2017-01-25 | 株式会社堀场制作所 | Gas ingredient detection device |
-
2014
- 2014-04-18 CN CN201420199480.4U patent/CN203772736U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353263A (en) * | 2015-07-16 | 2017-01-25 | 株式会社堀场制作所 | Gas ingredient detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20200418 |