CN202869982U - Micro quartz furnace atomizer - Google Patents
Micro quartz furnace atomizer Download PDFInfo
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- CN202869982U CN202869982U CN 201220532104 CN201220532104U CN202869982U CN 202869982 U CN202869982 U CN 202869982U CN 201220532104 CN201220532104 CN 201220532104 CN 201220532104 U CN201220532104 U CN 201220532104U CN 202869982 U CN202869982 U CN 202869982U
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- boiler tube
- quartz stove
- furnace tube
- miniature quartz
- ignition device
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Abstract
The utility model provides a micro quartz furnace atomizer, comprising a heating device, an outer-layer furnace tube, an inner-layer furnace tube and a hot face igniter which are sequentially arranged from outside to inside, wherein a gas channel is formed between the outer-layer furnace tube and the inner-layer furnace tube; a gas inlet is arranged at one end of the gas channel, and a gas outlet is arranged at the other end of the gas channel; the heating device is arranged on the outer periphery of the outer-layer furnace tube; the hot face igniter is arranged inside the inner-layer furnace tube; and an ignition needle of the hot face igniter extends out of the gas outlet. As a design that the hot face igniter is arranged inside the inner-layer furnace tube is adopted, a quartz furnace tube is miniaturized, meanwhile a gap between the outer-layer furnace tube and the inner-layer furnace tube is greatly narrowed, the radial temperature gradient effect of gaseous substances heated in the quartz furnace tube is effectively improved, and the reliability of an atomization process is improved.
Description
Technical field
The utility model relates to the atomization field of atomic fluorescence, especially relates to the micro-atomizer of portable atomic fluorescence.
Background technology
Atomizer is one of core devices of atomic fluorescence spectrometer, plays atomizing key effect in the course of work of atomic fluorescence spectrometer.
China's patent No. be ZL87104958A patent report a kind of argon shielded atomization unit for quartz furnace, boiler tube is comprised of two-layer concentric quartz tubes, uniform winding heater strip on the outer tube, outer tube input argon gas shield flame, inner tube passes into the hydride gas with carrier gas.
1998, the luxuriant grade of Zhang Jin reported " low temperature atomization " technology (Zhang Jin is luxuriant, Zhang Qin, Ning Jiantong. argon-hydrogen flame low temperature automatic igniter is used for Hydrides AFS spectral analysis research [J]. the test of rock ore deposit, 1998,17 (1): 22 ~ 28).Compare with early stage high quartz stove atomizer, not only make the sensitivity for analysis of all tested elements improve respectively 2～7 times; Effectively overcome simultaneously the comparatively serious memory effect of arsenic, antimony and lead and other elements; And greatly prolonged serviceable life of electric furnace heating wire.Be widely used at present on the various atomic fluorescence spectrometer of China.
China's patent No. be ZL94207732.6 patent report a kind of low temperature automatic igniter of hydride generation atomic fluorescence argon-hydrogen flame, adopt resistance wire that Quartz stove tube is heated, adopt simultaneously the thermocouple monitoring heating-up temperature, system carries out thermostatic control according to the temperature of feedback.
China's patent No. be ZL98207255.4 patent report a kind of atomization unit for quartz furnace, adopt the glaze film resistance that Quartz stove tube is carried out infrared heating.
China's patent No. be ZL200720190235.7 patent report the controlled quartz heating body of heater with preheating of a kind of temperature, adopt the glaze film resistance that Quartz stove tube is carried out infrared heating, adopt simultaneously thermopair to carry out temperature monitoring, system carries out thermostatic control according to the temperature of feedback.
In addition, it needs to be noted, when gas passes through the heating zone of above-mentioned atomizer via Quartz stove tube, its heating can only conduct to realize by the heat from outside to inside of quartzy tube wall, therefore the phenomenon that temperature from outside to inside descends gradually, i.e. radial symmetry gradient effect will appear in heated gas on the diametric(al) of Quartz stove tube.General Quartz stove tube internal diameter is larger, and radial symmetry gradient is larger; Gas flow is larger, and radial symmetry gradient is larger; Heating-up temperature is higher, and radial symmetry gradient is larger; The radial symmetry gradient of the double-deck boiler tube of protected type is more obvious than the individual layer boiler tube, 200 ℃ of heating, when argon flow amount is 800mL/min, generally be not less than 20 ℃/mm.Owing to having closely incidence relation between the sensitivity for analysis of atomic fluorescence and the heating-up temperature of atomizer, each element is wanted the atomizer heating-up temperature an of the best, be that 200 ℃, lead are that 100 ℃, cadmium are 300 ℃ etc. such as arsenic, therefore the existence meeting of radial symmetry gradient effect is so that the sensitivity for analysis of atomic fluorescence is on the low side, because the radial symmetry gradient effect very easily changes, also can have influence on the repeatability of analysis result in addition.Therefore, desirable atomizer just needs to consider to eliminate the radial symmetry gradient effect at the beginning of design, to guarantee obtaining best sensitivity for analysis and repeatability in the atomic fluorescence analysis process.Yet there are no report and patent relevant for the atomizer that can eliminate the radial symmetry gradient effect.
Related atomizer in the above-mentioned patented technology, generally its power consumption is not less than 100W, and required argon flow amount also is not less than 800mL/min, therefore only is only applicable to the atomic fluorescence spectrometer of working in the laboratory.
For portable atomic fluorescence, the characteristic of field condition analysis has determined that the power consumption of atomizer and argon gas consumption etc. are the key factors that affects the atomic fluorescence working time.Also do not emerge about report and the Patents of the miniature quartz stove atomizer that is used for portable atomic fluorescence at present.
In view of this, for solving the deficiency in the above-mentioned technology, the design people is based on the research and development of association area, and constantly test and improvement of process, and then generation of the present utility model is arranged.
Summary of the invention
The purpose of this utility model is for existing atomizer because power consumption and argon flow amount can not be applicable to more greatly the problem that portable atomic fluorescence field condition detects, design a kind of miniature quartz stove atomizer, employing places the surface ignition device design of Quartz stove tube inside, realized the microminiaturization of Quartz stove tube, greatly shortened simultaneously the gap between outer boiler tube and the internal layer boiler tube, eliminate the radial symmetry gradient effect when gaseous material is heated in Quartz stove tube, improved the reliability of atomization process.The surface ignition device is only in sample phase and the work of the time slot in the stage of injection, greatly reduce the power consumption of atomizer, the design that the microminiaturization of Quartz stove tube and need not shields gas greatly reduces the consumption to argon gas, thereby can satisfy the requirement that portable atomic fluorescence low-power consumption, low argon gas consume.
For reaching above-mentioned purpose, the utility model provides a kind of miniature quartz stove atomizer, it is characterized in that: comprise the heater element that sets gradually from outside to inside, outer boiler tube, internal layer boiler tube and surface ignition device, form gas passage between described outer boiler tube and the internal layer boiler tube, described gas passage one end is provided with air intake opening, the other end is provided with the gas outlet, described heater element is arranged on the outer peripheral face of described outer boiler tube, described surface ignition device is arranged in the described internal layer boiler tube, and the ignition electrode of described surface ignition device extend out to place, described gas outlet.
In the described miniature quartz stove atomizer: the described other end of described gas passage is gradually-reducing shape and forms described gas outlet.
In the described miniature quartz stove atomizer: described air intake opening in a tubular form, its internal diameter is 1 ~ 5mm, external diameter is 2 ~ 8mm.
In the described miniature quartz stove atomizer: the material of described outer boiler tube is quartzy.
In the described miniature quartz stove atomizer: the material of described internal layer boiler tube is quartzy.
In the described miniature quartz stove atomizer: the internal diameter of described gas outlet is 3 ~ 9mm.
In the described miniature quartz stove atomizer: the length that described surface ignition device stretches out the gas outlet is 1 ~ 5mm.
In the described miniature quartz stove atomizer: described miniature quartz stove atomizer height is 15 ~ 40mm.
In the described miniature quartz stove atomizer: described surface ignition device is pulse type ignitor.
The beneficial effects of the utility model are: adopt the design that the surface ignition device is placed Quartz stove tube inside, realized the microminiaturization of Quartz stove tube, the gap between outer boiler tube and the internal layer boiler tube has been shortened in simultaneously this design greatly, effectively improve the radial symmetry gradient effect when gaseous material is heated in Quartz stove tube, improved the reliability of atomization process.The surface ignition device is only in sample phase and the work of the time slot in the stage of injection, greatly reduce the power consumption of atomizer, the design that the microminiaturization of Quartz stove tube and need not shields gas greatly reduces the consumption to argon gas, thereby can satisfy the requirement that portable atomic fluorescence low-power consumption, low argon gas consume.
Description of drawings
Fig. 1 is sectional structure chart of the present utility model.
Description of reference numerals: 1-air intake opening; 2-heater element, the outer boiler tube of 3-, 4-internal layer boiler tube, 5-gas outlet, 6-surface ignition device.
Embodiment
About the utility model is the application target that reaches above-mentioned and effect and the technological means that adopts, now enumerate better feasible embodiment, and cooperate shown in the accompanying drawing, details are as follows:
The utility model provides a kind of miniature quartz stove atomizer, comprise the heater element 2 that sets gradually from outside to inside, outer boiler tube 3, internal layer boiler tube 4 and surface ignition device 6, wherein, form gas passage between described outer boiler tube 3 and the internal layer boiler tube 4, described gas passage one end is provided with air intake opening 1, other end gradually-reducing shape also forms gas port 5, described heater element 2 is arranged on the outer peripheral face of described outer boiler tube 3, be used for gas is heated, and described surface ignition device 6 is arranged in the described internal layer boiler tube 4, the ignition electrode of described surface ignition device 6 extend out to 5 places, described gas outlet, is used for igniting.
Wherein:
The material of described outer boiler tube 3 is quartzy.
The material of described internal layer boiler tube 4 is quartzy.
Described air intake opening 1 in a tubular form, its internal diameter is 1 ~ 5mm, external diameter is 2 ~ 8mm, argon flow amount is 10 ~ 300mL/min.
The internal diameter of described gas outlet 5 is 3 ~ 9mm.
The heating-up temperature scope of described heater element 2 is 100 ~ 1000 ℃, preferably adopts electroheating type heater element 2.
The length that the ignition electrode of described surface ignition device 6 stretches out gas outlet 5 is 1 ~ 5mm.
Described miniature quartz stove atomizer height is 15 ~ 40mm.
Described surface ignition device 6 is pulse type ignitors, and it adopts the pulse operation mode, namely only finishes and power supply igniting in the time period of injection stage before beginning in the atomic fluorescence sample phase.
Be 1 ~ 8s power supply duration of ignition of described surface ignition device 6.
Described outer boiler tube 3 and internal layer boiler tube 4 200 ℃, when being the argon gas of 300mL/min by flow, its radial symmetry gradient is 0 ℃/mm.
In the atomic fluorescence analysis process, test substance is entered in the interlayer between outer boiler tube 3 and the internal layer boiler tube 4 by air intake opening 1 under the carrying of argon gas by the react gaseous material that generates and hydrogen of steam, after heater element 2 heating, above gas outlet 5, lighted by surface ignition device 6, form argon-hydrogen flame, gaseous material in argon-hydrogen flame by atomization.
The utility model adopts the design that surface ignition device 6 is placed Quartz stove tube inside, realized the microminiaturization of Quartz stove tube, the gap between outer boiler tube 3 and the internal layer boiler tube 4 has been shortened in simultaneously this design greatly, effectively improve the radial symmetry gradient effect when gaseous material is heated in Quartz stove tube, improved the reliability of atomization process.Surface ignition device 6 is only in sample phase and the work of the time slot in the stage of injection, greatly reduce the power consumption of atomizer, the design that the microminiaturization of Quartz stove tube and need not shields gas greatly reduces the consumption to argon gas, thereby can satisfy the requirement that portable atomic fluorescence low-power consumption, low argon gas consume.
Above is illustrative to description of the present utility model; and it is nonrestrictive; those skilled in the art is understood, and can carry out many modifications, variation or equivalence to it within spirit that claim limits and scope, but they will fall in the protection domain of the present utility model all.
Claims (9)
1. miniature quartz stove atomizer, it is characterized in that: comprise the heater element that sets gradually from outside to inside, outer boiler tube, internal layer boiler tube and surface ignition device, form gas passage between described outer boiler tube and the internal layer boiler tube, described gas passage one end is provided with air intake opening, the other end is provided with the gas outlet, described heater element is arranged on the outer peripheral face of described outer boiler tube, described surface ignition device is arranged in the described internal layer boiler tube, and the ignition electrode of described surface ignition device extend out to place, described gas outlet.
2. miniature quartz stove atomizer according to claim 1, it is characterized in that: the described other end of described gas passage is gradually-reducing shape and forms described gas outlet.
3. miniature quartz stove atomizer according to claim 1 is characterized in that: described air intake opening in a tubular form, its internal diameter is 1 ~ 5mm, external diameter is 2 ~ 8mm.
4. miniature quartz stove atomizer according to claim 1 is characterized in that: the material of described outer boiler tube is for quartzy.
5. miniature quartz stove atomizer according to claim 1 is characterized in that: the material of described internal layer boiler tube is for quartzy.
6. miniature quartz stove atomizer according to claim 1, it is characterized in that: the internal diameter of described gas outlet is 3 ~ 9mm.
7. miniature quartz stove atomizer according to claim 1, it is characterized in that: the length that described surface ignition device stretches out the gas outlet is 1 ~ 5mm.
8. miniature quartz stove atomizer according to claim 1, it is characterized in that: described miniature quartz stove atomizer height is 15 ~ 40mm.
9. miniature quartz stove atomizer according to claim 1, it is characterized in that: described surface ignition device is pulse type ignitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532104 CN202869982U (en) | 2012-10-17 | 2012-10-17 | Micro quartz furnace atomizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220532104 CN202869982U (en) | 2012-10-17 | 2012-10-17 | Micro quartz furnace atomizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202869982U true CN202869982U (en) | 2013-04-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220532104 Withdrawn - After Issue CN202869982U (en) | 2012-10-17 | 2012-10-17 | Micro quartz furnace atomizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202869982U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776816A (en) * | 2012-10-17 | 2014-05-07 | 北京瑞利分析仪器有限公司 | Mini-sized quartz furnace atomizing device |
| CN106645073A (en) * | 2017-03-08 | 2017-05-10 | 力合科技（湖南）股份有限公司 | Atomizer and ignition device |
-
2012
- 2012-10-17 CN CN 201220532104 patent/CN202869982U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776816A (en) * | 2012-10-17 | 2014-05-07 | 北京瑞利分析仪器有限公司 | Mini-sized quartz furnace atomizing device |
| CN103776816B (en) * | 2012-10-17 | 2016-01-13 | 北京瑞利分析仪器有限公司 | Miniature quartz stove atomizer |
| CN106645073A (en) * | 2017-03-08 | 2017-05-10 | 力合科技（湖南）股份有限公司 | Atomizer and ignition device |
| CN106645073B (en) * | 2017-03-08 | 2023-09-29 | 力合科技（湖南）股份有限公司 | Atomizer and ignition device thereof |
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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: 20130410 Effective date of abandoning: 20160113 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |