CN205622964U - Thermal ionization plasma generate test device - Google Patents
Thermal ionization plasma generate test device Download PDFInfo
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- CN205622964U CN205622964U CN201620320173.6U CN201620320173U CN205622964U CN 205622964 U CN205622964 U CN 205622964U CN 201620320173 U CN201620320173 U CN 201620320173U CN 205622964 U CN205622964 U CN 205622964U
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- plasma
- combustor
- thermal ionization
- test device
- optical window
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Abstract
The utility model discloses a thermal ionization plasma generate test device, include: airtight explosion chamber, it includes combustion chamber, optical window and ignition, the fiber optic probe, its receive port aims at the optical window, the spectrum appearance, it connects the fiber optic probe, carries out data acquisition, the sensor, it is installed inside the combustion chamber, and the sensor can be used for measuring temperature and pressure in the combustion chamber, the relief valve, it is installed in combustion chamber one end, data process system, it connects sensor, relief valve and spectrum appearance respectively, carries out data processing, adjusts plasma density. The utility model has the characteristics of test decorum simple structure, convenient to use and measuring range guangZhou etc to owing to adopt non -contact to measure, can not disturb plasma generation, can test equally to high temperature and high pressure environment.
Description
Technical field
This utility model relates to plasma diagnostics investigative technique, is specifically related to a kind of thermal ionization plasma
Generate test device.
Background technology
The diagnosis of plasma is actually two steps: examines and breaks.Examine and more pay attention to practice, and break
Then bias toward analysis.So, plasma diagnostics uses the detection of certain physical method to be then passed through point exactly
Analysis obtains some physical parameter of plasma.Popular says, plasma diagnostics makes plasma exactly
From a process of " invisible " to " ".
The kind number of plasma is various, and the method diagnosing different types of plasma is also the most not
With.In general, plasma diagnostic method has contact diagnosis and two kinds of methods of contactless diagnosis,
This is based on the difference of diagnostic mode and distinguishes.If according to the difference of diagnosis object, plasma is examined
Disconnected method can be divided into again low temperature plasma diagnostics and high-temperature plasma diagnosis.The side of two kinds of diagnostic classifications
Method intersects, and the most strictly distinguishes.Different diagnostic methods have different pluses and minuses, and contact diagnoses
Method is of a relatively high for the spatial resolution of plasma density, is generally used for low temperature plasma diagnostics；
And contactless diagnosis is owing to its diagnosis principle is substantially without the purity of interference plasma, it is usually used in high temperature
Plasma diagnostics.Langmuir probe method is a kind of contact method of diagnosis, is also the most commonly used one side
Method.Another kind of method is impedance measurement, and the plasma being typically only used for measuring radio-frequency discharge generation is close
Degree.
Contactless diagnostic method typically has: microwave interference method, laser interferance method and spectral diagnostics etc..
Wave interference method of diagnosis is generally used for tokamak device and measures plasma density, owing to being non-cpntact measurement
So the parameter of plasma will not be changed.But due to the restriction of space layout, microwave interference method is installed
Passage be limited, which limits measure density spatial distribution；What laser interferometer needed swashs
Optical transmitting set, system structure is complicated, is generally used for nuclear fusion plasma diagnostics.And, diagnostic system
There is stronger signal disturbing, require further improvement system, reduce system noise, filter out signal disturbance,
Improve the resolution of laser interference diagnostic system.Spectroscopy measurements plasma density has many good qualities, and surveys
Amount system structure is simple, easy to use, measures scope wide, it is often more important that owing to this is contactless survey
Amount, will not produce interference by plasma.It is widely used as a kind of Plasma Diagnostics
In the various parameters measuring plasma.
Gas ionization produces the kind of plasma to be had a lot, such as DC discharge plasma, capacitive coupling
Close plasma, inductively coupled plasma, microwave discharge plasma and thermal ionization plasma etc..
Study more for discharge plasma and coupled plasma, and for the research of thermal ionization plasma
Considerably less, only for the discussion etc. of thermal ionization probability；Produce plasma for grinding with powder gas simultaneously
Studying carefully the thermal ionization plasma research that object carries out the most considerably less, during powder burning, combustion gas can reach
3000K 4000K, pressure can reach 400MPa, and the environment of High Temperature High Pressure can make gas generation thermoelectricity
From, the emission spectrum generating plasma is measured with spectrometry, the electron density of plasma,
The relevant parameters such as electron temperature are also required to study widely.
Utility model content
This utility model has been designed and developed a kind of thermal ionization plasma and has been generated test device.This utility model
Purpose be for after gunpowder explosion in the closed environment of High Temperature High Pressure, to generate thermal ionization plasma
Body density can carry out the device tested, and solves gunpowder in prior art right in the ignition of confined explosion indoor
The problem that the light of thermal ionization plasma gathers difficulty.This utility model has test decorum simple in construction,
The features such as the easy to use and scope of measurement is wide, and owing to using non-contact measurement, will not article on plasma
Body produces interference, can test equally for high temperature and high pressure environment.
The technical scheme that this utility model provides is:
A kind of thermal ionization plasma generates test device, including:
Airtight explosion chamber, it includes combustor, optical window and igniter；
Wherein, described optical window is symmetrically arranged at described combustor both sides, and igniter is arranged on institute
State combustor one end, in described combustor by described igniter by propellant ignition after produce plasma
Body；
Fibre-optical probe, its receiving port is directed at described optical window；
Relief valve, it is arranged on combustor one end；
Spectrogrph, it connects described fibre-optical probe, carries out data collection；
Sensor, it is installed on described combustion chamber, and described sensor can be used in measuring described burning
Indoor temperature and pressure；
Data handling system, it connects described spectrogrph and described sensor respectively.
Preferably, described optical window material is sapphire crystal.
Preferably, described optical window is compressed by gasket seal in described combustor installation place.
Preferably, seal plug is set in described burner ends.
Preferably, described igniter is arranged in the seal plug of described combustor one end, described in let out
At the gas outlet of the seal plug that pressure valve is arranged on the described combustor other end.
Preferably, described optical window arranges 3 groups, is symmetrically arranged at described combustor both sides.
This utility model is had the advantages that compared with prior art
1, multiple see-through window is offered in confined explosion room by this utility model, can by multiple see-through window
Thermal ionization plasma spectrometry is acquired, uses contactless plasma spectrum to be acquired,
Noiseless to the test of thermal ionization plasma；
When 2, launching for High-pressure gun, the thermal ionization plasma density that in barrel, powder gas is formed
Measure, by under high temperature and high pressure environment to thermal ionization plasma use non-contact measurement generate etc.
The intensity of spectral line of gas ions spectrum, and then draw thermal ionization plasma density under high temperature and high pressure environment,
The result arrived is rapid, can add powder volume for difference and test, and the environment of High Temperature High Pressure is to survey
Test result is the most noiseless.
Accompanying drawing explanation
Fig. 1 is the structural representation of thermal ionization plasma generating equipment described in the utility model.
Fig. 2 is the structural representation of airtight explosion chamber described in the utility model.
Fig. 3 is hydrogen atoms spectrogram.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail, to make those skilled in the art
Can implement according to this with reference to description word.
As shown in Figure 1 and Figure 2, this utility model provides a kind of thermal ionization plasma to generate test device,
Its agent structure includes: airtight explosion chamber 100, fibre-optical probe 200, data handling system 300, spectrum
Instrument 400, sensor 131 and relief valve 140；Wherein, airtight explosion chamber 100 include combustor 130,
Optical window 120 and igniter 150, optical window 120 arranges 3 groups, and is symmetrically arranged at combustion
Burning both sides, room 130, igniter 150 is arranged on combustor 130 one end, passes through in combustor 130
Igniter 150 will produce thermal ionization plasma in combustor 130 after propellant ignition；Fibre-optical probe
The receiving port of 200 alignment optical window 120 the most one by one, relief valve 140 can be intrinsic pressure at combustor 130
Open when power is excessive, and then guarantee test safety, spectrogrph 400 connects fibre-optical probe 200, counts
According to collection, it is internal that sensor 131 is arranged on combustor 130, and sensor 131 can be used in monitoring in real time
Temperature in combustor 130 and pressure, data handling system 300 connects sensor 131 and spectrum respectively
Instrument 400, carries out data process, draws the thermal ionization plasma density in combustor.
In another kind of embodiment, optical window 120 material is artificial sapphire crystal, high to be guaranteed in
The transmittance of light under temperature conditions, uses kyropoulos (KY method) mechanical performance that crystallizes in the present embodiment
Excellent A crystal orientation sapphire, and optical window 120 compressed by gasket seal in combustor 130 installation place,
In another kind of embodiment, it is respectively provided with seal plug, igniter 150 at combustor 130 two ends
Being arranged in the seal plug of combustor 130 one end, combustor 130 other end installed by relief valve 140
At the gas outlet of seal plug, can be opened when internal pressure of combustion chamber is excessive by relief valve 140, from
And ensure that experimental safe
Thermal ionization plasma is carried out by using thermal ionization plasma of the present utility model to generate test device
Body density test operation, as shown in Figure 1 and Figure 2, a kind of working method of the present utility model includes as follows
Step:
In combustor 130, light gunpowder, produce plasma at combustor 130；
The spectral intensity obtaining thermal ionization plasma is measured by fibre-optical probe 200 and spectrogrph 400,
By data handling system 300, the intensity of spectral line obtaining thermal ionization plasma spectrometry is carried out data to divide
Analysis, is calculated thermal ionization plasma temperature by the intensity of spectral line data obtained；
It is calculated thermal ionization by the intensity of spectral line data obtained and the thermal ionization plasma temperature obtained
Plasma density.
In another kind of embodiment, gunpowder is nitrocotton, and explosive payload is 0.20kg～0.30kg, the heat of test
Ionic plasma uses hydrogen gas plasma.
In another kind of embodiment, in test process, monitored at combustor 130 by sensor 131
Reaching pressure is 330MPa～380MPa, carries out being acquired data when temperature is 3200K～3500K,
Carry out under high-temperature and high-pressure conditions, hydrogen gas plasma density being tested.
In another kind of embodiment, hydrogen gas plasma temperature passes through formula?
Go out, in order to accurately record electron temperature, certain monatomic some spectral line can be used, record them
The relative line intensities of spectral line, by they correspondencesWith upper energy levels Ei, make linear equation bent
Line, tries to achieve its slopeThus the temperature trying to achieve plasma is:Wherein, λ
For the wavelength of spectral line, unit be nm, I be the relative line intensities of spectral line, it is ratio, and g is
The upper statistical wieght of level of spectral line, A is transition probability, and unit is s-1, EiFor upper energy levels, unit
Being Boltzmann constant for KJ, k, T is the temperature of plasma, unit be eV, C be constant；?
In the present embodiment, due to powder gas produce hydrogen, this test by measurement hydrogen gas plasma as a example by, hydrogen
The emission spectrum of edema caused by disorder of QI and ion is concentrated mainly between 200nm to 700nm, is illustrated in figure 3
Powder gas reaches the hydrogen atom Balmer series spectrogram obtained under 357MPa, 3257K experimental condition, logical
The investigative range crossing spectrogrph fully meets test demand, and this test uses different explosive payloads to be divided into 6 groups
Measuring, explosive payload is respectively 0.20kg, 0.22kg, 0.24kg, 0.26kg, 0.28kg, 0.30kg,
Using nitrocotton gunpowder, as shown in table 1, table 2, data are respectively hydrogen atomic spectrum line parameter and difference
The Atomic Hydrogen Emission Line intensity data of test group, is about 1.52eV by calculating gained plasma temperature.
Table 1 hydrogen atomic spectrum line parameter
Table 2 Atomic Hydrogen Emission Line intensity data/W
Plasma density passes through formula?
Go out；Wherein, I is the relative line intensities of spectral line, and it is ratio, and k is Boltzmann constant, and C is
Constant, AmqFor the transition probability of m state to q state, unit is s-1, EmFor m energy levels, unit is KJ,
M is the quality adding gunpowder, and unit is kg, σmqFor the collision cross-section of energy level, it is used for representing collision probability
Size, νmqFor spectral line frequency, its unit be Hz, N be density of gas molecules, its unit is m-3, Ne
For plasma density, its unit is m-3, T is the temperature of plasma, its unit be eV, h be general
Bright gram of constant, by the plasma temperature drawn before, can obtain plasma density by formula,
It is about 1.05*10 by calculating plasma density11m-3。
Although embodiment of the present utility model is disclosed as above, but it is not restricted to description and reality
Executing listed in mode utilization, it can be applied to various applicable field of the present utility model completely, for
For those skilled in the art, it is easily achieved other amendment, therefore without departing substantially from claim
And under the general concept that limited of equivalency range, this utility model is not limited to specific details and shows here
The legend gone out and describe.
Claims (6)
1. a thermal ionization plasma generates test device, it is characterised in that including:
Airtight explosion chamber, it includes combustor, optical window and igniter；
Wherein, described optical window is symmetrically arranged at described combustor both sides, and igniter is arranged on institute
State combustor one end, in described combustor by described igniter by propellant ignition after produce plasma
Body；
Fibre-optical probe, its receiving port is directed at described optical window；
Relief valve, it is arranged on combustor one end；
Spectrogrph, it connects described fibre-optical probe, carries out data collection；
Sensor, it is installed on described combustion chamber, and described sensor can be used in measuring described burning
Indoor temperature and pressure；
Data handling system, it connects described spectrogrph and described sensor respectively.
2. thermal ionization plasma as claimed in claim 1 generates test device, it is characterised in that institute
Stating optical window material is sapphire crystal.
3. thermal ionization plasma as claimed in claim 1 or 2 generates test device, it is characterised in that
Described optical window is compressed by gasket seal in described combustor installation place.
4. thermal ionization plasma as claimed in claim 3 generates test device, it is characterised in that
Described burner ends arranges seal plug.
5. thermal ionization plasma as claimed in claim 3 generates test device, it is characterised in that institute
Stating in the seal plug that igniter is arranged on described combustor one end, described relief valve is arranged on described combustion
At the gas outlet of the seal plug burning the room other end.
6. thermal ionization plasma as claimed in claim 1 generates test device, it is characterised in that institute
State optical window and arrange 3 groups, be symmetrically arranged at described combustor both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620320173.6U CN205622964U (en) | 2016-04-15 | 2016-04-15 | Thermal ionization plasma generate test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620320173.6U CN205622964U (en) | 2016-04-15 | 2016-04-15 | Thermal ionization plasma generate test device |
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| CN205622964U true CN205622964U (en) | 2016-10-05 |
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| CN201620320173.6U Expired - Fee Related CN205622964U (en) | 2016-04-15 | 2016-04-15 | Thermal ionization plasma generate test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879153A (en) * | 2017-01-18 | 2017-06-20 | 西北核技术研究所 | High-Power Microwave medium window punctures inlet side plasma diagnosis device and method |
-
2016
- 2016-04-15 CN CN201620320173.6U patent/CN205622964U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106879153A (en) * | 2017-01-18 | 2017-06-20 | 西北核技术研究所 | High-Power Microwave medium window punctures inlet side plasma diagnosis device and method |
| CN106879153B (en) * | 2017-01-18 | 2017-12-05 | 西北核技术研究所 | High-Power Microwave medium window punctures inlet side plasma diagnosis device and method |
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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: 20161005 Termination date: 20170415 |