CN205484194U - Dbd ionization detector - Google Patents
Dbd ionization detector Download PDFInfo
- Publication number
- CN205484194U CN205484194U CN201620245452.0U CN201620245452U CN205484194U CN 205484194 U CN205484194 U CN 205484194U CN 201620245452 U CN201620245452 U CN 201620245452U CN 205484194 U CN205484194 U CN 205484194U
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- electrode
- polarizing
- test chamber
- polarization
- dbd
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Abstract
The utility model provides a DBD ionization detector, includes the body, the chamber is detected to this internal being provided with. It is provided with carrier gas inlet and sample gas export respectively to detect chamber top and bottom. Detect the intracavity and install the tubular column, the tubular column bottom is linked together with the sample gas entry of body setting. This internal dielectric barrier discharge mechanism and polarization voltage ion collection mechanism of installing. Dielectric barrier discharge mechanism is located the outside of detecting chamber top inner wall including relative two discharge electrode that set up. Polarization voltage ion collection mechanism is including polarization electrode and collector electrode, polarization electrode and collector electrode all stretch into and detect in the chamber, polarization electrode and collector electrode all link to each other with the record appearance. DBD ionization detector falls into DBD region of discharge and polarization voltage ion collection district from top to bottom, through all compound ionizationouns of plasma messenger, realizes that equipment structure is simple to effective detection of all components, need not not ally oneself with with the continuous monitor that can realize the semi -volatile organic matter by the multi -detector, can not make the compound take place to react, guarantees compound ionic integrality, guarantees to detect the precision.
Description
Technical field
This utility model relates to a kind of detection equipment, specifically, is a kind of for detecting half volatile in surface water, drinking water
Organic detector.
Background technology
Semi-volatile organic matter SVOC is the big important pollutant of class in surface water, drinking water.For overall monitor Water quality, have
Effect supervision all kinds of emission sources, timely response environment contamination accident, need to include environment monitoring system online, on-the-spot in by water body SVOC,
Realize at least 24 kinds of semi-volatile organic matter Monitoring factors in " water environment quality standard " GB3838 2002 continuously from
Dynamic monitoring.
At present, conventional detector mainly has thermal conductivity detector TCD, flame ionization ditector FID, electron capture detection
Device ECD, flame photometric detector FPD etc..In these detectors, TCD is capable of the detection of all components, but sensitivity
The highest；The detector selectivitys such as FID, ECD, FPD are relatively strong, it is generally required to be applied in combination, equipment is relative complex.
Utility model content
The deficiency that this utility model exists for above-mentioned prior art, it is proposed that a kind of be capable of the detection of all components, sensitive
Spend high DBD ionization detector.
DBD ionization detector of the present utility model, including body, described internal is provided with test chamber.
Described test chamber top and bottom are respectively arranged with carrier gas inlet and sample gas outlet.
Being provided with tubing string in described test chamber, the sample gas inlet that described tubing string bottom is arranged with body is connected.
Described internal is provided with dielectric barrier discharge mechanism and polarizing voltage ioncollection mechanism.
Described dielectric barrier discharge mechanism includes two sparking electrodes being oppositely arranged, and is positioned at the outside of test chamber top inner wall.
Described polarizing voltage ioncollection mechanism includes that polarizing electrode and passive electrode, described polarizing electrode and passive electrode all stretch into
In test chamber, described polarizing electrode is all connected with monitor with passive electrode.
Described tubing string top is between dielectric barrier discharge mechanism and polarizing voltage ioncollection mechanism.
Preferably, described polarizing electrode connects DC source, and described DC source is connected with monitor by polarization wire,
Described polarization wired earth；Described passive electrode is connected with monitor by collecting wire；Described polarization wire with collect wire it
Between connect have high resistance.
Preferably, two setting up and down of described polarizing electrode, described passive electrode is between polarizing electrode.
The beneficial effects of the utility model are: DBD ionization detector is divided into DBD region of discharge and polarizing voltage ioncollection up and down
District, makes all compound ions by plasma, it is achieved the effective detection to all components, device structure is simple, need not
Multi-detector combination can realize the continuous monitoring of semi-volatile organic matter, and compound will not be made to react, it is ensured that compound from
The integrity of son, it is ensured that accuracy of detection.
Use two polarizing electrodes and passive electrode to carry out the collection of electronics, detected by the micro-electric current formed, sensitive
Degree height, stability is strong.Polarizing electrode and passive electrode are directly connected to the high resistance that resistance value is higher, make electric potential signal amplify, just
Detect in monitor.Use the electrode arranging structure of polarizing electrode passive electrode polarizing electrode, make micro-electric current of formation
Sensitivity is higher, more stable, and capacity of resisting disturbance is strong.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of DBD ionization detector；
Accompanying drawing 2 is the structure composition schematic diagram of polarizing voltage ioncollection mechanism.
Detailed description of the invention
In order to be able to further appreciate that structure of the present utility model, feature and other purpose, in conjunction with appended preferred embodiment specifically
Bright as follows, illustrated preferred embodiment is merely to illustrate the technical solution of the utility model, and non-limiting this utility model.
Detailed description of the invention of the present utility model is as follows:
As it is shown in figure 1, DBD ionization detector includes the body 1 made with insulant such as quartz or corundum, in body 1
It is provided with test chamber 2.
Test chamber 2 top and bottom are respectively arranged with carrier gas inlet 1-1 and sample gas outlet 1-2.
Tubing string 3, tubing string 3 top end opening, the sample gas inlet 1-3 that tubing string 3 bottom is arranged with body 1 are installed in test chamber 2
It is connected.
Dielectric barrier discharge mechanism and polarizing voltage ioncollection mechanism are installed in body 1, are divided into DBD to discharge test chamber 2
District and polarizing voltage ioncollection district.
Dielectric barrier discharge mechanism includes two the sparking electrode 4-1 being oppositely arranged, two sparking electrode 4-1 respectively with discharge power supply
It is connected.In order to avoid sparking electrode 4-1 contacts with gas in test chamber 2, sparking electrode 4-1 is positioned at test chamber 2 top inner wall
Outside, separate with gas.
Polarizing voltage ioncollection mechanism includes polarizing electrode 5-1 and passive electrode 5-2.Polarizing electrode 5-1 and passive electrode 5-2
All extending in test chamber 2, polarizing electrode 5-1 is connected with monitor with passive electrode 5-2.
As in figure 2 it is shown, polarizing electrode 5-1 connects DC source 5-3, provide polarizing voltage for polarizing voltage ioncollection district.
DC source 5-3 positive pole connects polarizing electrode, and negative pole is connected with monitor 5-4 by polarization wire, and polarize wired earth.
Passive electrode 5-2 is connected with monitor 5-4 by collecting wire.Polarization wire has high resistance with collecting to be connected between wire
5-5, also makes passive electrode 5-2 by high resistance 5-5 ground connection.
Two setting up and down of polarizing electrode 5-1, passive electrode 5-2, between polarizing electrode 5-1, form polarizing electrode and collect
The electrode arranging structure of electrode polarization electrode, the micro-current sensitivity making formation is higher, more stable.
Tubing string 3 top is between dielectric barrier discharge mechanism and polarizing voltage ioncollection mechanism, it is to avoid enter to detection from tubing string
The sample gas in chamber 2 enters DBD region of discharge, and can mix with Plasma contact rapidly, carries out ionizing.
During detection, inert gas helium is passed in test chamber by carrier gas inlet, connects the power supply being connected with sparking electrode,
Power supply is discharged by sparking electrode, owing to discharge energy is higher, punctures the wall of test chamber 2, enters in test chamber, swashs
Send out helium gas plasma.
Sample gas the most to be detected is entered in tubing string by sample gas inlet, and along tubing string upwards, flows out from tubing string top end opening,
Enter in test chamber.
Helium gas plasma flows downward, and recoil enters the sample gas in test chamber, mixes with sample gas and blows sample gas and flows downward.
Owing to helium gas plasma energy is higher, make the compound ions in sample gas, produce cation and anion.
The gas flowed downward enters polarizing voltage ioncollection district, and under the electric field action that polarizing voltage is formed, sample gas ionization is produced
Raw electronics is collected electrode and collects, and makes to form micro-electric current between passive electrode and polarizing electrode.
The micro-electric current between passive electrode and polarizing electrode measured by monitor, and appearance time and peak area according to micro-current waveform are surveyed
Go out the content of the composition in sample gas and composition.
And residual gas enters into sample gas outlet 1-2 by the annular space between test chamber 2 and tubing string 3, and discharge.
Claims (3)
1. a DBD ionization detector, it is characterised in that include body (1), be provided with test chamber (2) in described body (1),
Described test chamber (2) top and bottom are respectively arranged with carrier gas inlet (1-1) and sample gas outlet (1-2),
Tubing string (3), the sample gas inlet (1-3) that described tubing string (3) bottom and body (1) are arranged are installed in described test chamber (2)
It is connected,
Dielectric barrier discharge mechanism and polarizing voltage ioncollection mechanism are installed in described body (1),
Described dielectric barrier discharge mechanism includes two sparking electrodes (4-1) being oppositely arranged, and is positioned at test chamber (2) top inner wall
Outside,
Described polarizing voltage ioncollection mechanism includes polarizing electrode (5-1) and passive electrode (5-2), described polarizing electrode (5-1)
All extend in test chamber (2) with passive electrode (5-2), described polarizing electrode (5-1) and passive electrode (5-2) all with note
Record instrument is connected,
Described tubing string (3) top is between dielectric barrier discharge mechanism and polarizing voltage ioncollection mechanism.
DBD ionization detector the most according to claim 1, it is characterised in that described polarizing electrode (5-1) connects to be had directly
Stream power supply (5-3), described DC source (5-3) is connected with monitor (5-4) by polarization wire, described polarization wire
Ground connection；Described passive electrode (5-2) is connected with monitor (5-4) by collecting wire；Described polarization wire is led with collection
Connect between line and have high resistance (5-5).
DBD ionization detector the most according to claim 1 and 2, it is characterised in that described polarizing electrode (5-1) is upper and lower
Arranging two, described passive electrode (5-2) is positioned between polarizing electrode (5-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245452.0U CN205484194U (en) | 2016-03-28 | 2016-03-28 | Dbd ionization detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620245452.0U CN205484194U (en) | 2016-03-28 | 2016-03-28 | Dbd ionization detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205484194U true CN205484194U (en) | 2016-08-17 |
Family
ID=56648159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620245452.0U Withdrawn - After Issue CN205484194U (en) | 2016-03-28 | 2016-03-28 | Dbd ionization detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205484194U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606695A (en) * | 2016-03-28 | 2016-05-25 | 青岛佳明测控科技股份有限公司 | DBD (Dielectric Barrier Discharge) ionization detector and detection method thereof |
-
2016
- 2016-03-28 CN CN201620245452.0U patent/CN205484194U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606695A (en) * | 2016-03-28 | 2016-05-25 | 青岛佳明测控科技股份有限公司 | DBD (Dielectric Barrier Discharge) ionization detector and detection method thereof |
| CN105606695B (en) * | 2016-03-28 | 2019-01-22 | 青岛佳明测控科技股份有限公司 | DBD ionization detector and its detection method |
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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: 20160817 Effective date of abandoning: 20190122 |
|
| AV01 | Patent right actively abandoned |