CN202770775U - Argon hydrogen flame low temperature automatic ignition device for atomic fluorescence - Google Patents
Argon hydrogen flame low temperature automatic ignition device for atomic fluorescence Download PDFInfo
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- CN202770775U CN202770775U CN 201220428852 CN201220428852U CN202770775U CN 202770775 U CN202770775 U CN 202770775U CN 201220428852 CN201220428852 CN 201220428852 CN 201220428852 U CN201220428852 U CN 201220428852U CN 202770775 U CN202770775 U CN 202770775U
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- hydrogen flame
- argon
- low temperature
- atomic fluorescence
- temperature automatic
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Abstract
The utility model discloses an argon hydrogen flame low temperature automatic ignition device for atomic fluorescence. The device comprises an ignition needle, a spring, a fixing support and a position adjusting knob, wherein the fixing support is in a hollow pipe shape, a through hole is opened on the end surface of the front end of the fixing support, the ignition needle is arranged in the fixing support, a heating needle head of the ignition needle penetrates through the through hole at the front end of the fixing support, the spring is abutted between the front end of the fixing support and the ignition needle, and the position adjusting knob is in a threaded connection with the rear end of the fixing support to forwards push the ignition needle. According to the argon hydrogen flame low temperature automatic ignition device for the atomic fluorescence, the heating needle head is a ceramic electronic heating body including silicon nitride and molybdenum disilicide and formed by one-time molding, the installation is convenient, the ignition temperature and the heat efficiency are high, the acid-base corrosion resistance is excellent, the short-circuit phenomenon is prevented even though the device is in contact with a solution, and the problems that traditional resistance wire heating argon hydrogen flame ignition devices are poor in reliability and non-resistant to corrosion and resistance wires are prone to age are solved.
Description
Technical field
The utility model relates to the portfire of using in the analysis technical field of atomic fluorescence, especially relates to the low temperature atomization field of atomic fluorescence.
Background technology
Argon-hydrogen flame plays the atomizing vital role of gaseous material that steam is reacted and generates in the atomic fluorescence spectrophotometry detection technique.Except Hg, Cd element, the element that most atomic fluorescences such as As, Sb, Pb, Se can detect all need to turn to ground state atom at the argon-hydrogen flame Atom in testing process, could and then under the irradiation of excitation source, produce atomic fluorescence, finally just can obtain final testing result according to the relation between concentration and the atomic fluorescence intensity.In other words, if argon-hydrogen flame is not lighted in the atomic fluorescence testing process, except Hg, Cd element, the atomic fluorescence signal of most elements such as As, Sb, Pb, Se can't be detected, therefore also correct analysis result can't be obtained.
The argon-hydrogen flame low temperature automatic igniter of atomizer plays lights the react effect of the hydrogen that generates in the process of atomic fluorescence steam, guarantees that lighting of argon-hydrogen flame is the condition precedent that can atomic fluorescence spectrometer work in the testing process.Simultaneously, the length of the mission life of argon-hydrogen flame low temperature automatic igniter also is one of decision key element that determines the atomic fluorescence spectrometer whole aircraft reliability.
1998, the luxuriant grade of Zhang Jin reported " low temperature atomization " technology (Zhang Jin is luxuriant, Zhang Qin, rather build system argon-hydrogen flame low temperature automatic igniter and be used for Hydrides AFS spectral analysis research [J]. the test of rock ore deposit, 1998,17 (1): 22 ~ 28.).Adopt the high temperature resistance silk as the argon-hydrogen flame firing device, be installed on the top of Quartz stove tube, light argon-hydrogen flame by making resistance wire intermittently used mode.
China Patent No. be ZL94207732.6 patent report a kind of low temperature automatic igniter of hydride generation atomic fluorescence argon-hydrogen flame, the upper side of Quartz stove tube install one section with the concentric circular-arc resistance wire of Quartz stove tube as the argon-hydrogen flame firing device, light argon-hydrogen flame by making resistance wire intermittently used mode.
China Patent No. be ZL00234438.6 patent report a kind of automatic low-temp ignitor of atomic fluorescence argon-hydrogen flame, coiling one circle electric furnace heating wire below the port of Quartz stove tube, open simultaneously two vertical slots that are mutually 180 degree on the boiler tube top, allow resistance wire directly contact with hydrogen, be conducive to automatically lighting of argon-hydrogen flame.
China Patent No. be ZL200720190235.7 patent report the controlled quartz heating body of heater with preheating of a kind of temperature, the stove wire tray around quartzy mouth of pipe place, is played the effect of lighting argon-hydrogen flame.
All adopt in the above-mentioned report resistance wire as heating source to light argon-hydrogen flame, have more insoluble problem, respectively it is described below:
Because the restriction of installing space, the length of resistance wire is greatly limited, even coiled also need to be worked under the condition that far exceeds rated power, guarantee Quartz stove tube mouth reaches the ignition temperature of argon-hydrogen flame.The resistance wire catabiosis very easily occurs in long-term overburden work and heating under open environment, causes actual heating power to descend gradually, until loss of ignition when serious the resistance wire phenomenon of rupture can occur.
Resistance wire generally need to be through turning to spiral fashion, and then stretch, and is installed on the stuck-module after intercepting the resistance wire of required resistance value length.The coiling of resistance wire, intercepting and installation are comparatively complicated, in stretching and installation process spiral resistance wire partial short-circuit phenomenon occur very easily, have aggravated the speed of aging in the resistance wire course of work and fracture.
Atomic fluorescence generally uses volatile acid, example hydrochloric acid, nitric acid etc., because resistance wire can be in contact with it and corrosion inevitably for a long time, add resistance wire and generally do not possess the ability that salt tolerant is sour and nitric acid corrodes, so the corrosion of volatile acid is one of aging key factor of accelerating resistor silk.
For the atomic fluorescence that uses the peristaltic pump pumps waste liquid, if peristaltic pump can't extract waste liquid because of reasons such as pump line are aging, can cause the solution in the gas-liquid separator directly to enter atomizer, with the phenomenon that can be short-circuited after resistance wire under the duty contacts, and then can damage the electrical system of atomic fluorescence main frame.
Summary of the invention
The utility model is for the problems referred to above, a kind of argon-hydrogen flame low temperature automatic igniter for atomic fluorescence has been proposed, adopt the silicon nitride ceramics ignition electrode as ignition device, comprehensive substitutional resistance silk, the resistance wire that solves the existing structure existence is easy to aging and fracture, the problems such as poor reliability and assembling complexity.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of argon-hydrogen flame low temperature automatic igniter for atomic fluorescence is characterized in that: comprise ignition electrode, spring, fixed support and position adjustments knob, wherein:
Described fixed support is hollow tubular, has through hole on the end face of its front end;
Described ignition electrode is located in the described fixed support, and the heating syringe needle of described ignition electrode passes from the through hole of described fixed support front end;
Described spring is connected between described support bracket fastened front end and the described ignition electrode;
Described position adjustments knob is threaded with described support bracket fastened rear end, and pushes forward described ignition electrode.
Described ignition electrode comprises: described heating syringe needle, be connected to described heating syringe needle rear end insulated shaft, be connected to the ceramic base of described insulated shaft rear end and pass the power lead that is electrically connected with described heating syringe needle again from described ceramic base and insulated shaft inside.
Described spring is set on the insulated shaft of described ignition electrode.
Be provided with perforation in the described position adjustments knob, the power lead of described ignition electrode passes through from described perforation.
Described heating syringe needle is the ceramic electric heating body that comprises silicon nitride and molybdenum disilicide.
The diameter of described heating syringe needle is 1 ~ 5mm, and length is 2 ~ 10mm, and its operating voltage is 5 ~ 36V, and maximum heating temperature is 1000 ~ 1300 ℃.
Described insulated shaft is made by silicon nitride ceramics, and diameter is 2 ~ 5mm, and length is 5 ~ 20mm.
Described ceramic base is made by aluminium oxide ceramics or zirconia ceramics, and its diameter is 8 ~ 15mm, and length is 5 ~ 30mm.
Described spring is Compress Spring, is made by the high-temperature alloy material, and its alloy designations is GB2135, GH4169 or GH4145, and the maximum operating temperature of spring is 600 ℃, and internal diameter is 6 ~ 8mm, and external diameter is 8 ~ 12mm, and length is 5 ~ 15mm.
Described fixed support and described position adjustments knob are made by aluminium oxide ceramics or zirconia ceramics.
The beneficial effects of the utility model are: ignition electrode designs for one-shot forming, and is easy for installation, ignition temperature is high, have the high thermal efficiency, even and have excellent acid-alkali-corrosive-resisting performance and come in contact the phenomenon that also can not be short-circuited with solution.By the position of rotation adjusting knob, just can directly regulate the position of ignition electrode heating zone.And the utility model is easy to install, excellent anti-corrosion performance, dependable performance, and the igniting life-span is long.
Description of drawings
Fig. 1 is the ignition electrode cut-open view;
Fig. 2 is sectional structure chart of the present utility model.
Description of reference numerals: fixed support 1; Through hole 11; Spring 2; Ignition electrode 3; Heating syringe needle 31; Insulated shaft 32; Ceramic base 33; Power lead 34; Position adjustments knob 4; Perforation 41.
Embodiment
As shown in Figure 2, the utility model provides a kind of argon-hydrogen flame low temperature automatic igniter, and it is comprised of fixed support 1, spring 2, ignition electrode 3 and position adjustments knob 4, wherein:
Described fixed support 1 is hollow tubular, has through hole 11 on the end face of its front end, and the rear end is provided with internal thread;
Described ignition electrode 3 comprises: the heating syringe needle 31, be connected to described heating syringe needle 31 rear ends insulated shaft 32, be connected to the ceramic base 33 of described insulated shaft 32 rear ends and pass the power lead 34 that is electrically connected with described heating syringe needle 31 again from described ceramic base 33 and insulated shaft 32 inside, described ignition electrode is located in the described fixed support 1, and described heating syringe needle 31 stretches out from the through hole 11 of described fixed support 1 front end;
Described spring 2 is set on the insulated shaft of described ignition electrode 3, the front end butt of one end and described fixed support 1, ceramic base 33 butts of the other end and described ignition electrode 3;
Be provided with perforation 41 in the described position adjustments knob 4, the power lead 34 of described ignition electrode 3 passes through from described perforation 41, described position adjustments knob 4 is provided with external thread, described external thread is connected with the screw-internal thread fit of described fixed support 1 rear end, because the front end face of described position adjustments knob 4 and ceramic base 33 butts of described ignition electrode 3 can force described spring 2 compression deformations.
So, by rotating described position adjustments knob 4, the heating syringe needle 31 that can regulate ignition electrode 3 passes the length of described through hole 11.
In the utility model, the heating syringe needle 31 of described ignition electrode is the ceramic electrically-heated body that contains silicon nitride and molybdenum disilicide, and its diameter is 1 ~ 5mm, and length is 2 ~ 10mm, and its operating voltage is 5 ~ 36V, and maximum heating temperature is 1000 ~ 1300 ℃.
Described insulated shaft 32 is made by silicon nitride ceramics, and its diameter is 2 ~ 5mm, and length is 5 ~ 20mm.
Described ceramic base 33 is made by aluminium oxide ceramics or zirconia ceramics, and diameter is 8 ~ 15mm, and length is 5 ~ 30mm.
Described spring 2 is Compress Spring, is made by the high-temperature alloy material, and its alloy designations is GB2135, GH4169 or GH4145, and the maximum operating temperature of described spring 2 is 600 ℃, and internal diameter is 6 ~ 8mm, and external diameter is 8 ~ 12mm, and length is 5 ~ 15mm.
Described fixed support is made by aluminium oxide ceramics or zirconia ceramics.
Described position adjustments knob is made by aluminium oxide ceramics or zirconia ceramics.
In a further embodiment, the diameter of described heating syringe needle 31 is 2mm, and long is 5mm, and its operating voltage is 24V, and heating-up temperature is 1200 ℃.The diameter of the insulated shaft 32 of ignition electrode 3 is 3mm, and long is 6mm.Described ceramic base 33 is made by aluminium oxide ceramics, and diameter is 8mm, longly is 10mm.Described spring 2 is Compress Spring, is made by the high-temperature alloy material, and its preferred alloy trade mark is GB2135, and the maximum operating temperature of spring 2 is 600 ℃, and internal diameter is 4mm, and external diameter is 6mm, and long is 10mm.Described fixed support 1 is made by aluminium oxide ceramics.Described position adjustments knob 4 is made by aluminium oxide ceramics.
The utility model adopts the ceramic electrically-heated body that contains silicon nitride and molybdenum disilicide as ignition device, has solved traditional resistor silk heating argon-hydrogen flame firing device poor reliability, not corrosion-resistant, the easy aging problem of resistance wire.The utility model system architecture is simple, be easy to installation, excellent anti-corrosion performance, dependable performance, and the igniting life-span is long.
Above explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; in the situation that does not break away from the spirit and scope that claim limits; can make many modifications, variation or equivalence; for example internal and external threads on fixed support and the position adjustments knob is exchanged mutually, all will be fallen within the protection domain of the present utility model.
Claims (10)
1. argon-hydrogen flame low temperature automatic igniter that is used for atomic fluorescence is characterized in that: comprise ignition electrode, spring, fixed support and position adjustments knob, wherein:
Described fixed support is hollow tubular, has through hole on the end face of its front end;
Described ignition electrode is located in the described fixed support, and the heating syringe needle of described ignition electrode passes from the through hole of described fixed support front end;
Described spring is connected between described support bracket fastened front end and the described ignition electrode;
Described position adjustments knob is threaded with described support bracket fastened rear end, and pushes forward described ignition electrode.
2. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 1, it is characterized in that: described ignition electrode comprises: described heating syringe needle, be connected to described heating syringe needle rear end insulated shaft, be connected to the ceramic base of described insulated shaft rear end and pass the power lead that is electrically connected with described heating syringe needle again from described ceramic base and insulated shaft inside.
3. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 2, it is characterized in that: described spring is set on the insulated shaft of described ignition electrode.
4. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 2, it is characterized in that: be provided with perforation in the described position adjustments knob, the power lead of described ignition electrode passes through from described perforation.
5. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 1 and 2, it is characterized in that: described heating syringe needle is the ceramic electric heating body that comprises silicon nitride and molybdenum disilicide.
6. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 5, it is characterized in that: the diameter of described heating syringe needle is 1 ~ 5mm, and length is 2 ~ 10mm, and its operating voltage is 5 ~ 36V, and maximum heating temperature is 1000 ~ 1300 ℃.
7. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 2, it is characterized in that: described insulated shaft is made by silicon nitride ceramics, and diameter is 2 ~ 5mm, and length is 5 ~ 20mm.
8. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 2, it is characterized in that: described ceramic base is made by aluminium oxide ceramics or zirconia ceramics, and its diameter is 8 ~ 15mm, and length is 5 ~ 30mm.
9. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 1, it is characterized in that: described spring is Compress Spring, made by the high-temperature alloy material, its alloy designations is GB2135, GH4169 or GH4145, the maximum operating temperature of spring is 600 ℃, internal diameter is 6 ~ 8mm, and external diameter is 8 ~ 12mm, and length is 5 ~ 15mm.
10. the argon-hydrogen flame low temperature automatic igniter for atomic fluorescence according to claim 1, it is characterized in that: described fixed support and described position adjustments knob are made by aluminium oxide ceramics or zirconia ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220428852 CN202770775U (en) | 2012-08-27 | 2012-08-27 | Argon hydrogen flame low temperature automatic ignition device for atomic fluorescence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220428852 CN202770775U (en) | 2012-08-27 | 2012-08-27 | Argon hydrogen flame low temperature automatic ignition device for atomic fluorescence |
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| Publication Number | Publication Date |
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| CN202770775U true CN202770775U (en) | 2013-03-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220428852 Withdrawn - After Issue CN202770775U (en) | 2012-08-27 | 2012-08-27 | Argon hydrogen flame low temperature automatic ignition device for atomic fluorescence |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630527A (en) * | 2012-08-27 | 2014-03-12 | 北京瑞利分析仪器有限公司 | Argon-hydrogen flame low temperature automatic ignition apparatus used for atomic fluorescence |
-
2012
- 2012-08-27 CN CN 201220428852 patent/CN202770775U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103630527A (en) * | 2012-08-27 | 2014-03-12 | 北京瑞利分析仪器有限公司 | Argon-hydrogen flame low temperature automatic ignition apparatus used for atomic fluorescence |
| CN103630527B (en) * | 2012-08-27 | 2015-11-18 | 北京瑞利分析仪器有限公司 | For the argon-hydrogen flame low temperature automatic igniter of atomic fluorescence |
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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: 20130306 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |