CN208082696U - Coaxial multistage NTP generators based on dielectric barrier discharge - Google Patents
Coaxial multistage NTP generators based on dielectric barrier discharge Download PDFInfo
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- CN208082696U CN208082696U CN201820861265.4U CN201820861265U CN208082696U CN 208082696 U CN208082696 U CN 208082696U CN 201820861265 U CN201820861265 U CN 201820861265U CN 208082696 U CN208082696 U CN 208082696U
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- field electrode
- discharge
- discharge module
- ntp
- dielectric barrier
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Abstract
The utility model is a kind of coaxial multistage NTP generators based on dielectric barrier discharge, includes the NTP discharge modules and casing of shell, interlaced arrangement.NTP discharge modules use composite construction：The high-field electrode of coating insulating heat-conductive silica gel is nested on the outside of quartz socket tube, and each layer of high-field electrode is connect with conducting wire with external circuit respectively, and discharge voltage, duty ratio are gradually reduced with the increase of module series.It is low-field electrode on the inside of quartz socket tube, there are discharging gaps for the two.The quartz socket tube for being nested with high-field electrode is connected with low-field electrode by water-cooling channel, and then high-field electrode is made to become an independent cantilever design with quartz ampoule and low-field electrode three.The utility model makes reaction gas slow down flowing velocity in NTP generators, stabilizes gas pressure, extends the reaction time of gas, improves transformation efficiency.The NTP discharge modules of interlaced arrangement make reaction gas that can cooled down in time behind dielectric barrier discharge region, inhibit the pyrolysis of NTP active materials.
Description
Technical field
The utility model belongs to diesel engine vent gas post-processing technology field more particularly to a kind of based on dielectric barrier discharge
Coaxial multistage NTP generators.
Background technology
As a kind of internal combustion engine being different from gasoline engine, engine fuel economy is more preferable, and the thermal efficiency is high, has extensive fortune
With, spread all over industry, agricultural and daily life each corner.However, the huge ownership of diesel vehicle also bring it is all multi-environment
Problem, carbon monoxide (CO), hydrocarbon (HC), nitrogen oxides (NO in emissionx) and particulate matter (Particulate
Matter, PM) huge destruction can be all caused to environment.Therefore, imperative to the control of diesel emissions.
Diesel particulate trap (Diesel particulate filter, DPF) is that current reduction PM is most common
One of outside purification technology, DPF is to the whole arresting efficiency of PM up to 90% or more.But during DPF is trapped, PM can be big
Amount accumulation, causes DPF to block, and then exhaust back pressure is made to increase, and increases oil consumption.Therefore, it is necessary to be regenerated to DPF in due course.
Lower temperature plasma technology (Non-thermal plasma, NTP) is a kind of novel low-emission technology.NTP
Generator generates O by carrying out electrion to air3、NO2Etc. strong oxidizing properties active material.Utilize O3、NO2Isoreactivity object
With the PM deposited in DPF complicated chemical reaction occurs for the strong oxidizing property of matter, can be real far below PM initiation temperatures
The oxygenolysis of existing PM achievees the effect that remove PM.
The NTP generators designed at present are suitable for air purification, low temperature sterilization and static simulation gas purification examination more
It tests.How to extend residence time of the reaction gas in NTP generators in practical applications, increase transfer efficiency and solves NTP
The problems such as active material is pyrolyzed, and then the technology is applied successfully in diesel engine dpf regeneration field, it also needs further to study.
Utility model content
The residence time in conventional NTP generators is short according to reaction gas in the prior art for the utility model, transformation efficiency
A kind of the problems such as NTP active materials that are low and generating are pyrolyzed, it is proposed that coaxial multistage NTP generations based on dielectric barrier discharge
Device, it is therefore intended that the structure of the utility model can slow down the flowing velocity of reaction gas, stabilize gas pressure, extend
The reaction time of gas improves conversion ratio, and can inhibit the pyrolysis of NTP active materials to reacting air cooling.
Technical solution used by the utility model is as follows：
A kind of coaxial multistage NTP generators based on dielectric barrier discharge, including shell, discharge module and casing；It is described
Discharge module is quartz ampoule outer ring nesting high-field electrode, and quartz ampoule inner ring is separated by one section of gap location and is equipped with low-field electrode, San Zhetong
Axis is placed, and one end of discharge module makes the gap between quartz ampoule and low-field electrode form one by the partition board one placed vertically
Cavity, is gas flow, and the low-field electrode of the discharge module other end is directly connected to shell, and with low-field electrode earth lead phase
Even, high-field electrode installs partition board by a section with quartz ampoule and is connected with shell；One group of set is placed equidistant between two discharge modules
Pipe；
The each group of casing has two layers, and distance center axis is closely inner layer sleeve, is far outer layer sleeve from central shaft,
One end of inner layer sleeve and outer layer sleeve is directly connect with shell, the other end by partition board two by inner layer sleeve and outer layer sleeve it
Between connect, make to form cavity between inner layer sleeve, outer layer sleeve and partition board two to be gas flow；Two other side of partition board with put
Water-cooling channel is formed between the installation partition board of electric module.
Silica gel is coated outside the high-field electrode；
Clearance distance between the quartz ampoule inner ring and low-field electrode is 2mm；
The discharge module has 3 grades, and distance center axis is equally spaced, and is respectively first order electric discharge outward by central axis
Module, second level discharge module, third pole discharge module；Discharge module series is higher, and the voltage applied is lower.
Described to put every level-one electricity mould high-field electrode in the block by conducting wire connection external circuit, low-field electrode is connect by conducting wire
Ground, discharge module series is higher, and the voltage applied is lower；
Described sleeve pipe has 2 groups, is equidistantly inlaid between first order discharge module and second level discharge module respectively, the second level
Between discharge module and third pole discharge module；
The shell is cylindrical structure, and both ends are respectively equipped with the smaller air inlet component of diameter and water inlet member, per level-one
Between the high-field electrode and inner layer sleeve of discharge module and low-field electrode and outer layer sleeve are cooling-water duct, logical by water cooling
Road forms complete cooling water flow conduits；Gas flow between each group of casing passes through with per the gas flow in level-one discharge module
Air inlet forms complete reaction gas runner.Draining is provided on the shell of gas flow and the end of cooling water flow conduits
Component and exhaust component.The shell, casing and partition board are tetrafluoroethene material, are directly bonded inside housings.
The beneficial effects of the utility model：
The NTP discharge modules of interlaced arrangement can slow down the flowing velocity of reaction gas, stabilize gas pressure, extend
Residence time of the gas in reaction zone.Also, the flash-over characteristic of each layer of discharge module mesohigh electrode can be controlled individually,
Improve discharging efficiency.Reaction gas can be cooled down accordingly after overdischarge, inhibit the pyrolysis of NTP active materials.
Description of the drawings
The structural schematic diagram of coaxial multistage NTP generators of the Fig. 1 based on dielectric barrier discharge；
Coaxial multistage NTP generator A-A face sectional views of the Fig. 2 based on dielectric barrier discharge；
Coaxial multistage NTP generator B-B face sectional views of the Fig. 3 based on dielectric barrier discharge；
Coaxial multistage NTP generator C-C face sectional views of the Fig. 4 based on dielectric barrier discharge；
Coaxial multistage NTP generator air inlet face sectional views of the Fig. 5 based on dielectric barrier discharge；
Coaxial multistage NTP generator discharge module cross-sectional views of the Fig. 6 based on dielectric barrier discharge；
Coaxial multistage NTP generator first order discharge module sectional views of the Fig. 7 based on dielectric barrier discharge；
In figure, 1- air inlet components, 2- level-one high-field electrode conducting wires, 3- two level high-field electrode conducting wires, 4- three-level high-field electrodes
Conducting wire, 5- high-field electrodes, 6- quartz ampoules, 7- dielectric barrier discharges area, 8- low-field electrodes, 9- water drainage parts, 10- exhaust components,
11- low-field electrode earth leads, 12- water inlet members, 13- cooling-water ducts, 14- high-field electrode water-cooling channels, 15- low tensions
Pole water-cooling channel, 16- outer layer sleeves, 17- inner layer sleeves, 18- shells, 19- baffles, 20- air inlets, 21- install partition board, 22-
Partition board one, 23- partition boards two.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used for explaining this
Utility model is not used to limit the utility model.
Such as Fig. 1, the utility model is a kind of coaxial multistage NTP generators based on dielectric barrier discharge, mainly by shell
18, discharge module and casing；Shell 18 in the utility model uses tetrafluoroethene material, straight in the coaxial arrangement two of shell
The smaller cylinder of diameter is respectively air inlet component 1 and water inlet member 12, and reaction gas enters from air inlet component 1；Cooling water is from another
The water inlet member 12 of one end horizontally enters into cavity, and in 18 water inlet member of shell, 12 homonymy, in setting, there are one water drainage parts 9 and 2
A exhaust component.
Such as Fig. 2,3,4,6,7, discharge module is by for 6 outer ring nesting high-field electrode 5 of quartz ampoule, 6 inner ring of quartz ampoule is separated by
Low-field electrode 8, three's coaxial placement are equipped at 2mm；One end of discharge module makes quartz ampoule 6 and low-field electrode by partition board 1
Gap between 8 forms a cavity, which is dielectric barrier discharge area 7, the i.e. flow channel of gas；Discharge module it is another
The low-field electrode 8 of one end is directly connected to shell 1, and high-field electrode 5 is connected by installing partition board 21 with shell 18 with quartz ampoule 6, is pacified
It is in " ┌ " type to fill partition board 21, and the horizontal ends of installation partition board 21 are directly bonded inside housings, and vertical end is connect with high-field electrode 5,
Inside is the channel of gas；Discharge module be equipped with 3 grades, be equally spaced outward by central axis, be followed successively by first order discharge module,
Second level discharge module, third pole discharge module；Pass through level-one high-field electrode respectively per the high-field electrode 5 in level-one discharge module
Conducting wire 2, two level high-field electrode conducting wire 3, three-level high-field electrode conducting wire connect external circuit, then by the low tension on low-field electrode 8
Pole earth lead 11 draws ground connection respectively.
Since reaction gas will produce charged particle through overdischarge, and then the charged particle concentration of gas is improved, makes reaction
Gas is easier that exoelectrical reaction occurs.Therefore access is corresponded to by first order discharge module, second level discharge module, third pole discharge module
Voltage continuously decrease, and then improve the discharging efficiency of high-field electrodes 5 at different levels.In addition, 5 outside of high-field electrode coats insulating heat-conductive
Silica gel can take away heat in Cooling Process and prevent from leaking electricity.
One group of casing is placed equidistant between two discharge modules, each group of casing has two layers, and distance center axis is closely interior
Layer casing 17, is far outer layer sleeve 16 from central shaft, inner layer sleeve 17 is connect with 16 one end of outer layer sleeve with shell 18, another
End will be connected by partition board 2 23 between inner layer sleeve 17 and outer layer sleeve 16, make inner layer sleeve 17, outer layer sleeve 16 and partition board
It is gas flow that a cavity is formed between 2 23 sides, between 2 23 other side of partition board and the installation partition board 21 of discharge module
Form water-cooling channel.
Between high-field electrode 5 and inner layer sleeve 17 per level-one discharge module and low-field electrode 8 is with outer layer sleeve 16
Cooling-water duct forms complete cooling water flow conduits by water-cooling channel；Gas flow between each group of casing is put with per level-one
Gas flow in electric module forms complete reaction gas runner by air inlet 20.
Two groups of casings are equipped in the utility model, each group of casing is placed equidistant between two discharge modules；By first
It is separated between grade discharge module and second level discharge module, second level discharge module and third pole discharge module, inner layer sleeve
17 is adjacent with the high-field electrode 5 of first order discharge module, and outer layer sleeve 16 is adjacent with the low-field electrode 8 of second level discharge module,
It is water-cooling channel on the outside of the baffle end of two layers of casing, is equipped with plate washer 19 in 16 left side of outer layer sleeve, makes reaction gas circuit and water route point
It separates.This kind of structure makes reaction gas round-trip in NTP generators during the work time, its movement velocity is made to slow down, and increases anti-
It should residence time of the gas in generator.
For clearer explanation the technical solution of the utility model, with reference to the course of work of the utility model make into
One step is explained：
Such as Fig. 4,5, in design in the present invention, intake section of the gas on the left of shell 18 in the utility model
Part 1 enters, and is entered by air inlet 20 in the gap of first order discharge module, i.e., barrier discharge area 7 is reacted, and is passed through " ┌ "
After the cavity that type installation partition board 21 is formed by, gas enters back into 16 groups of inner layer sleeve 17 and outer layer sleeve by air inlet 20
At gap, be moved to the left again by air inlet 20 enter second level discharge module gap in, and so on until enter
In the gap of third level discharge module, finally it is discharged from exhaust component 10, since two jacket exteriors are circulated by cooling water, have passed through
The higher reaction gas of temperature of region of discharge can cool down rapidly, and the NTP active materials that reaction generates is avoided to be pyrolyzed.
Such as Fig. 1,2, cooling water is flowed by the water inlet member 12 on 1 right side of shell, logical by the cooling water of discharge module end
Road enters the cooling-water duct between first order discharge module high-field electrode 5 and inner layer sleeve 17, moves right to the second level and puts
Cooling-water duct between electric module low-field electrode 8 and outer layer sleeve 16, and so on, it eventually enters into shell 1 and is put with the third level
Water drainage part 9 after cooling-water duct between electric module high voltage electrode 5 on the upside of right end is discharged.Realize to each component models into
Row cooling, such structure allow cooling water to be in direct contact high-field electrode 5 and low-field electrode 8, increase cooling effect.
In conclusion the utility model is in reciprocating labyrinth by gas flow between discharge module and water-cooling channel
Formula, and it is respectively formed two complete cooling water flow conduits and gas flow, it both may be implemented to slow down reaction during the reaction
The flowing velocity of gas stabilizes gas pressure, and can extend the reaction time of gas, improves conversion ratio.
Above example is merely to illustrate the design philosophy and feature of the utility model, in the art its object is to make
Technical staff can understand the content of the utility model and implement according to this, and the scope of protection of the utility model is not limited to above-mentioned implementation
Example.So it is all according to equivalent variations or modification made by the revealed principle of the utility model, mentality of designing, in this practicality
Within novel protection domain.
Claims (9)
1. a kind of coaxial multistage NTP generators based on dielectric barrier discharge, which is characterized in that including shell (18), electric discharge mould
Block and casing；The discharge module is quartz ampoule (6) outer ring nesting high-field electrode (5), and quartz ampoule (6) inner ring is separated by an intersegmental gap
Place is equipped with low-field electrode (8), three's coaxial placement；One end of discharge module makes quartz ampoule (6) and low pressure by partition board one (22)
Gap between electrode (8) forms a cavity, is gas flow；The low-field electrode (8) of the other end of discharge module directly connects
Body contact body (1), high-field electrode (5) are connected by installing partition board (21) with shell (18) with quartz ampoule (6)；Two discharge modules it
Between be placed equidistant with one group of casing；
The each group of casing has two layers, and distance center axis is closely inner layer sleeve (17), is far outer layer sleeve from central shaft
(16), inner layer sleeve (17) is directly connect with shell with one end of outer layer sleeve (16), and the other end will be interior by partition board two (23)
It is connected between layer casing (17) and outer layer sleeve (16), makes inner layer sleeve (17), outer layer sleeve (16) and partition board two (23) side
Between formed a cavity, be gas flow；It is formed between partition board two (23) other side and the installation partition board (21) of discharge module
Water-cooling channel.
2. a kind of coaxial multistage NTP generators based on dielectric barrier discharge according to claim 1, which is characterized in that
Silica gel is coated outside the high-field electrode (5).
3. a kind of coaxial multistage NTP generators based on dielectric barrier discharge according to claim 1, which is characterized in that
Clearance distance between quartz ampoule (6) inner ring and low-field electrode (8) is 2mm.
4. a kind of coaxial multistage NTP generators based on dielectric barrier discharge according to claim 1, which is characterized in that
The discharge module has 3 grades, and distance center axis is equally spaced, and is respectively first order discharge module, the outward by central axis
Two-stage discharge module, third pole discharge module.
5. a kind of coaxial multistage NTP generators based on dielectric barrier discharge according to claim 1, which is characterized in that
High-field electrode in the discharge module connects external circuit by conducting wire, and low-field electrode passes through wired earth, discharge module grade
Number is higher, and the voltage applied is lower.
6. a kind of coaxial multistage NTP generators based on dielectric barrier discharge according to claim 1, which is characterized in that
Described sleeve pipe has 2 groups, is equidistantly inlaid between first order discharge module and second level discharge module respectively, second level discharge module
Between the discharge module of third pole.
7. a kind of coaxial multistage NTP generators based on dielectric barrier discharge according to claim 4, which is characterized in that
Between high-field electrode (5) and inner layer sleeve (17) per level-one discharge module and low-field electrode (8) is with outer layer sleeve (16)
Cooling-water duct forms complete cooling water flow conduits by water-cooling channel；Gas flow between each group of casing is put with per level-one
Gas flow in electric module forms complete reaction gas runner by air inlet (20).
8. a kind of coaxial multistage NTP generators based on dielectric barrier discharge according to claim 7, which is characterized in that
It is provided with water drainage part (9) and exhaust component (10) on the shell (18) of gas flow and the end of cooling water flow conduits.
9. a kind of coaxial multistage NTP generators based on dielectric barrier discharge according to claim 1 or 6, feature exist
In the shell (18), casing and partition board are tetrafluoroethene material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820861265.4U CN208082696U (en) | 2018-06-04 | 2018-06-04 | Coaxial multistage NTP generators based on dielectric barrier discharge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820861265.4U CN208082696U (en) | 2018-06-04 | 2018-06-04 | Coaxial multistage NTP generators based on dielectric barrier discharge |
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| CN208082696U true CN208082696U (en) | 2018-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554631A (en) * | 2018-06-04 | 2018-09-21 | 江苏大学 | Coaxial multistage NTP generators based on dielectric barrier discharge |
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2018
- 2018-06-04 CN CN201820861265.4U patent/CN208082696U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108554631A (en) * | 2018-06-04 | 2018-09-21 | 江苏大学 | Coaxial multistage NTP generators based on dielectric barrier discharge |
| CN108554631B (en) * | 2018-06-04 | 2023-08-22 | 江苏大学 | Coaxial Multistage NTP Generator Based on Dielectric Barrier Discharge |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20181113 Termination date: 20200604 |