CN205861546U - A kind of Fourier infrared spectrograph, sample cell, heater - Google Patents
A kind of Fourier infrared spectrograph, sample cell, heater Download PDFInfo
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- CN205861546U CN205861546U CN201620830852.8U CN201620830852U CN205861546U CN 205861546 U CN205861546 U CN 205861546U CN 201620830852 U CN201620830852 U CN 201620830852U CN 205861546 U CN205861546 U CN 205861546U
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- heater
- heating wire
- sample cell
- metal shell
- inner core
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Abstract
This utility model relates to a kind of Fourier infrared spectrograph, sample cell, heater.Described heater includes metal shell, heating wire and insulator inner core；Described metal shell is made up of corrosion resistant metal；Described insulator inner core is made up of the insulator with more than 500 degrees Celsius thermo-chemical stabilities；Described heating wire winding, on described insulator inner core, is kept insulation by described insulator inner core between silk and the silk of described heating wire winding；Described packed by metal casing is outside described insulator with heating wire, and the connection cable that described heating wire two ends connect draws described metal shell.Fourier infrared spectrograph of the present utility model, sample cell, heater, overcome the problem that heater thermochemistry in prior art is unstable, may produce the volatile substance disturbing tested gas, and the problem that heater is connected instability with sample cell.
Description
Technical field
This utility model generally relates to Fourier infrared spectrograph, is specifically related to a kind of Fourier infrared spectrograph, sample
Pond, heater.
Background technology
Along with economic fast development, the kind of polluter is increasing, particularly Craft in Chemical Industrial Area, Industrial Zone and periphery
Environment, pollution modes is increasingly sophisticated with ecological disruption type, and ambient pollution burden is gradually increased, and has and send out during environmental pollution accident
Raw.Meanwhile, along with Public Environmental Awareness gradually strengthens, all kinds of environmental pollutions complain dispute day by day frequent, therefore to environmental monitoring
Kind, require more and more higher.
Plan according to national environmental protection, the most deeply implement country's prevention and control of air pollution action plan, strengthen air
Prevention and cure of pollution scientific and technical research, research air low-concentration organic fast on-line measurement technology is prevented to meet current atmospheric combined pollution
The Science & Technology Demands controlled, and the atmosphere organic matter offer for playing a crucial role in haze and photochemical fog forming process is effective
Line Measurement Technique, China is in the urgent need to entering the equipment of current environment prevention and cure of air pollution and atmosphere organic matter on-line monitoring
Row research and development.
Fourier transform infrared spectrometer is mainly used in for atmospheric environment or industrial environment in the application of field of Environment Protection
In harmful gas carry out qualitative and quantitative analysis: tested gas receives instrument sample introduction entrance, enters sample cell (or sample through pipeline
Product room), detect entrance sample cell by being arranged at the detection modules such as the peripheral infrared light supply of sample cell, interferometer, detector
In the kind of gas and concentration.
Fourier infrared spectrograph can measure the information of all frequencies of sample simultaneously, and scanning speed is fast, resolution and spirit
Sensitivity is high, it is possible to and multiple Instrument crosslinking, it is mainly used in tracking chemical reaction process, analyzes and differentiate various compound and change
Learn key, the state of aggregation orientation of high polymer and study of surfaces etc..FTIR spectrum is built upon molecular vibration and rotation
Spectral technique in basic theories, it provides the characteristic frequency of functional group or chemical bond, utilizes the characteristic frequency of molecular radical
Organic and inorganic compound can be carried out qualitative and quantitative analysis with infrared " fingerprint ", it is also possible to carry out the discriminating of functional group.
FTIR spectrum is analyzed the application in environmental test and is mainly by this Infrared Spectrum Technology, to test specimen
Carry out the analysis and research of microstructure and microstructure and the internal relation of macro property, find out its basic law and and ring
The relation of border factor, thus improve the level of environmental test technology.
Fourier transform infrared spectrometer is to develop based on the infrared light after interfering is carried out the principle of Fourier transformation
Infrared spectrometer, mainly by infrared light supply, diaphragm, interferometer, sample cell, detector and various ir reflector, laser
Device, control circuit plate and power supply composition.Sample can be carried out qualitative and quantitative analysis, when measurand is gaseous state amount, Fu Li
The sample cell of leaf infrared spectrometer typically works under 180 DEG C of high temperature.
Further, for avoid measurand (harmful gas in field of Environment Protection) during the detection of qualitative, quantitative,
The cross interference of gas with various component, tested gas sample chamber must design heater.Heater is Fourier transform infrared light
The important component part of spectrometer sample cell temperature control module, heater is as high temperature heat source and temperature sensor, insulation parts
Sample cell temperature control module is collectively formed with parts such as temperature control circuits.
The heater of similar products at home and abroad generally uses the silica gel heating sheet of parcel heating wire as its heater at present.
But, use silica gel heating sheet as heater, have following defects that
Bonding agent is added during silica gel heating sheet processing technology, along with the rising of temperature in heating process during work, viscous
Connecing agent and have certain volatilization decomposition, final volatile matter is discharged in the air around calandria, in some of which volatile matter
Some become branch to produce interference gas, particulate matter and the background gas disturbing tested gas, and these gases affect instrument entirety is examined
The reliability surveyed.
Silica gel heating sheet generally uses bonding agent to be adhered to outside sample cell, along with the rising of temperature, part in heating process
Bonding agent can volatilize and be discharged in surrounding air, the problem equally existing the tested gas of above-mentioned interference.Meanwhile, silica gel heating sheet exists
Being heated under the condition of high temperature, produce the unreliability in connection along with the aging of bonding agent, silica gel heating plate can be from sample cell
On split away off.
Therefore, in order to overcome, heater thermochemistry in prior art is unstable, may produce waving of the tested gas of interference
The problem of stimulating food matter, and the problem that heater is connected instability with sample cell, it is necessary to a kind of new heater, and peace are provided
Fill the sample cell of this heater and equipped with the Fourier transform infrared spectrometer of this sample cell.
Utility model content
The purpose of this utility model is to provide a kind of Fourier infrared spectrograph, sample cell, heater, existing to solve
The heater heat chemistry of technology is unstable and connects unstable problem.
This utility model aims to provide a kind of heater for Fourier infrared spectrograph sample pond, described heater bag
Include metal shell, heating wire and insulator inner core；Described metal shell is made up of corrosion resistant metal；Described insulator inner core is by having
The insulator of more than 500 degrees Celsius thermo-chemical stabilities is made；Described heating wire winding on described insulator inner core, described electricity
Insulation is kept by described insulator inner core between silk and silk that heated filament is wound around；Described packed by metal casing is in described insulator and electricity
Outside heated filament, the connection cable that described heating wire two ends connect draws described metal shell.
Above-mentioned heater, described metal shell can be made up of rustless steel or aluminium alloy or titanium alloy.
Above-mentioned heater, described insulator inner core is made up of Muscovitum.
Above-mentioned heater, described heating wire is nickel filament.
Above-mentioned heater, the metal shell of described heater has installing hole.
Above-mentioned heater, the outside of described heating wire is surrounded by glass insulation tube.
Above-mentioned heater, on described metal shell, the flatness with the installed surface of sample cell is 0.2-0.5mm；Described add
The thickness of hot device is less than 3mm.
This utility model provides a kind of sample cell being provided with above-mentioned heater, and described heater is connected and installed in by screw
Outside described sample cell.
This utility model provides a kind of Fourier infrared spectrograph being provided with above-mentioned sample cell, described FTIR spectrum
The sample cell of instrument is exterior heater as above.
The beneficial effects of the utility model are, equipped with above-mentioned heater on the sample cell of Fourier infrared spectrograph,
Overcome the problem that heater thermochemistry in prior art is unstable, may produce the volatile substance disturbing tested gas, with
And the problem that heater is connected instability with sample cell.
Accompanying drawing explanation
Fig. 1 is the cross-section structure sketch of this utility model heater；
Fig. 2 is this utility model heater assembling structural representation on sample cell.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in more details, with
Just the advantage that better understood when scheme of the present utility model and its various aspects.But, specific implementations described below
Mode and embodiment are only descriptive purposes rather than to restriction of the present utility model.
As it is shown in figure 1, a kind of heater for Fourier infrared spectrograph sample pond of this utility model embodiment, by
Corrosion resistant metal shell 11 cladding is wound around the insulator inner core 13 of resistance wire 12 and constitutes.
Described insulator inner core 13 is made up of the insulator with more than 500 degrees Celsius thermo-chemical stabilities, and insulator is excellent
Elect Muscovitum as.Muscovitum has the highest insulation, resistance to elevated temperatures, heat-insulating property, and its chemical stability is good, at 180 DEG C of high temperature
Lower elasticity and surface nature do not change.
Insulator inner core 13 also can be made up of pottery, safety glass etc..
Described heating wire 12 is wound on described insulator inner core 13, by described between silk and the silk of described heating wire winding
Insulator inner core 13 keeps insulation, and insulator inner core 13 can be as the support member of heating wire 12 simultaneously.
Heating wire 12 is preferably Cr20Ni80 (nickel filament), and this alloy has excellent combination property, is that resistance electrothermal closes
Gold makes the first-selected kind of high-quality heating, and it has good antioxidant, and intensity is high, nonmagnetic, emissivity is high, and tool
There are the series of advantages such as preferable corrosion resistance, not softening.When using for a long time, this kind of heating wire is indeformable and permanent stretches
Long the least.
Heating wire 12 is alternatively other conventional electrothermal alloys such as Fe-Cr-Al wire.
In order to preferably insulate, glass insulation tube can be surrounded by the outside of described heating wire 12.
It is outside with heating wire 12 that described metal shell 11 is packaged in described insulator inner core 13, and described heating wire 12 two ends are even
The connection cable connect draws described metal shell 11.
Metal shell 11 selects corrosion resistant metal, is also to consider its heat stability and antioxygen, characteristic against corrosion so that it is in heating
During will not produce the material affecting tested gas.
Meanwhile, heater of the present utility model uses metal shell 11 to be coated with, and is also to consider heater 1 and sample cell 2
Annexation because metalwork be prone to machining install, this just can avoid prior art because bonding connection initiation connection
Instability and the most volatile problem of binding agent.
On described metal shell, the flatness with the installed surface of sample cell is 0.2-0.5mm.In order to not affect instrument volume
And weight, the thickness of described heater is less than 3mm.
Further, metal shell 11 can be made up of rustless steel or aluminium alloy or titanium alloy etc..
Preferably, metal shell selects rustless steel to make.
Muscovitum, stainless oxidation resistance temperature more than 800 DEG C, Cr20Ni80 (nickel filament) oxidation resistance temperature 1000 DEG C with
On, so interference gas and the background gas disturbing tested gas will not be produced.
It is therefore preferable that use the heater being made up of the resistance wire of corrosion resistant plate cladding mica insulation, it can greatly carry
Rise reliability and the reliability of instrument whole detection of sample cell heating.
This utility model makes the method for above-mentioned heater and includes step:
Heating wire 12 is wound on described insulator inner core 13, and makes between silk and the silk that described heating wire 12 is wound around absolutely
Edge；
The insulator inner core 13 being wound with heating wire 12 is loaded metal shell 11, connects at the two ends of described heating wire 12
Connection cable also draws metal shell 11；
Described metal shell 11 is encapsulated.
As in figure 2 it is shown, above-mentioned heater 1 screw 3 made can be installed on the sidewall of sample cell 2.Heater 1
Being the important component part of the temperature control module of Fourier transform infrared spectrometer sample cell 2, heater 1 is as high temperature heat source and temperature
The parts such as degree sensor, insulation parts and temperature control circuit collectively form the temperature control module of sample cell 2.
Conventional infrared-gas sample cell, is the absorption cell utilizing infrared spectrum analysis gas, and the gas cell of standard is long
About 10cm, is the tubulose pond that is made up of infrared transmission window material, end.For the sample that low-vapor pressure or content are low, light can be used
, there is one group of reflecting mirror in the special gas pond of Cheng Jiachang in pond, make infra-red radiation come and go by gas sample, can obtain 10m length
Effective light path.
Long path cell is mainly used in AIR POLLUTION STUDY, environmental monitoring, gas purity analysis, industrial processes
Monitoring, the discharge field such as gas analysis and oil exploration geological logging process monitoring.Gas cell cell body can heat, the highest can be by upper
State heater 1 and be heated to more than 200 °, and band temperature controls and pressure transducer, it is possible to be adjusted according to the actual requirements.
Work process equipped with above-mentioned heater and the Fourier infrared spectrograph of sample cell is as follows: received by tested gas
Instrument sample introduction entrance, enters sample cell 2 (or sample room) through pipeline, and being energized the heater 1 in sample cell 2 makes it heat,
Make the multiple gases component of tested gas in gaseous state under measuring state so that each component can be the most qualitative, and accurate
Really measure each composition component and the concentration of each component gas in mixed gas.By being arranged at the peripheral infrared light of sample cell 2
The detection modules such as source, interferometer, detector detect kind and the concentration of the gas entered in sample cell 2.
In a word, equipped with heater of the present utility model on the sample cell of Fourier infrared spectrograph, overcome existing skill
Heater thermochemistry instability, the possible problem producing the volatile substance disturbing tested gas, and heater and sample in art
Product pond connects instability, connects the problem that binding agent also produces interfering material.
Numerical value in following embodiment is exemplary illustration, and concrete scope with the technical scheme in utility model content is
Accurate.
Embodiment
The processing technology of the present embodiment heater is as follows:
Heater sectional structure chart is as it is shown in figure 1, this heater 1 is by Muscovitum 13 and heating wire 12 and stainless sheet steel 11 structure
Become.
Processing and fabricating flatness is the stainless steel casing rustless steel surrounding layer as heater 1 of 0.5mm.
Epidermis is surrounded by heating wire 12 uniform winding of glass insulation tube on mica sheet, mica sheet is wrapped over heating wire 12
After, fix two free ends of heating wire 12.
The mica sheet 13 being wrapped over heating wire 12 is loaded stainless steel casing 11, draws power cable, by stainless steel casing
Connect Edge Bend, close, rivet.
Installing hole opened by the heater 1 packaged with rustless steel.
It is last that it is noted that obviously above-described embodiment is only for clearly demonstrating this utility model example,
And not restriction to embodiment.For those of ordinary skill in the field, the most also may be used
To make other changes in different forms.Here without also cannot all of embodiment be given exhaustive.And thus
That is amplified out obviously changes or changes among still in protection domain of the present utility model.
Claims (9)
1. the heater for Fourier infrared spectrograph sample pond, it is characterised in that described heater includes outside metal
Shell, heating wire and insulator inner core；
Described metal shell is made up of corrosion resistant metal；
Described insulator inner core is made up of the insulator with more than 500 degrees Celsius thermo-chemical stabilities；
Described heating wire winding is on described insulator inner core, by described insulator between silk and the silk of described heating wire winding
Core keeps insulation；
Described packed by metal casing is outside described insulator with heating wire, and the connection cable that described heating wire two ends connect is drawn
Described metal shell.
2. heater as claimed in claim 1, it is characterised in that described metal shell is by rustless steel or aluminium alloy or titanium alloy
Make.
3. heater as claimed in claim 1, it is characterised in that described insulator inner core is made up of Muscovitum.
4. heater as claimed in claim 1, it is characterised in that described heating wire is nickel filament.
5. heater as claimed in claim 1, it is characterised in that have installing hole on the metal shell of described heater.
6. heater as claimed in claim 1, it is characterised in that the outside of described heating wire is surrounded by glass insulation tube.
7. heater as claimed in claim 1, it is characterised in that with the plane of the installed surface of sample cell on described metal shell
Degree is 0.2-0.5mm；The thickness of described heater is less than 3mm.
8. one kind is provided with the sample cell of heater described in any one of claim 1 to 7, it is characterised in that described heater by
Screw is connected and installed in outside described sample cell.
9. it is provided with a Fourier infrared spectrograph for sample cell described in claim 8, the sample of described Fourier infrared spectrograph
Product pond is exterior just like the heater described in any one of claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620830852.8U CN205861546U (en) | 2016-08-02 | 2016-08-02 | A kind of Fourier infrared spectrograph, sample cell, heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620830852.8U CN205861546U (en) | 2016-08-02 | 2016-08-02 | A kind of Fourier infrared spectrograph, sample cell, heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205861546U true CN205861546U (en) | 2017-01-04 |
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ID=57654671
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620830852.8U Active CN205861546U (en) | 2016-08-02 | 2016-08-02 | A kind of Fourier infrared spectrograph, sample cell, heater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153568A (en) * | 2016-08-02 | 2016-11-23 | 北京雪迪龙科技股份有限公司 | A kind of Fourier infrared spectrograph, sample cell, heater and preparation method thereof |
-
2016
- 2016-08-02 CN CN201620830852.8U patent/CN205861546U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106153568A (en) * | 2016-08-02 | 2016-11-23 | 北京雪迪龙科技股份有限公司 | A kind of Fourier infrared spectrograph, sample cell, heater and preparation method thereof |
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| GR01 | Patent grant |