CN206480592U - A kind of ionic migration spectrometer - Google Patents
A kind of ionic migration spectrometer Download PDFInfo
- Publication number
- CN206480592U CN206480592U CN201621344818.6U CN201621344818U CN206480592U CN 206480592 U CN206480592 U CN 206480592U CN 201621344818 U CN201621344818 U CN 201621344818U CN 206480592 U CN206480592 U CN 206480592U
- Authority
- CN
- China
- Prior art keywords
- drift
- section
- air
- air inlet
- ionic migration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The utility model is related to a kind of ionic migration spectrometer, including air inlet section, detection section, air outlet section and controller, and air inlet section includes air inlet, helix tube and air inlet buffering area；Detection section is connected with air inlet buffering area, detect that section includes pellicle, drift tube and detector, drift tube sets the outlet of drift gas close to the side of detector, drift tube sets drift gas return port close to the side of pellicle, and drift air pump, device for drying and filtering and dopant bottle are set between the outlet of drift gas and drift gas return port；The entrance of air outlet section is arranged at the ionization area of detection section, and air outlet section includes recoil module and magnetic valve one, measuring pump and gas outlet.Compared with prior art; ionic migration spectrometer described in the utility model; it is simple in construction, operate steadily, rate of false alarm is low; detection time is short; sensitivity is high, and can realize overload protection, and the service life of equipment has been effectively ensured; coming off for pellicle can effectively be prevented simultaneously, it is ensured that the filter effect and accuracy of detection of sample air.
Description
Technical field
The utility model is related to the detection field of toxic and harmful gas, more particularly to a kind of ionic migration spectrometer.
Background technology
Ionic migration spectrometer is that the toxic agent in the detection device sampled using air pump to environment, sample air is electric
From the quality that detector, the time of this segment distance of material transport and the toxic agent material being ionized are reached into ion and through weak electric field
Proportional and used as a kind of means of identification, analysis time is within 1 second to a few minutes.Ionic migration spectrometer needs steam
Vapour or gaseous sample analysis, auto injection.Because it has high sensitivity and response speed, ionic migration spectrometer mainly should
For the crowds such as laboratory, subway, airport, railway station, medical centre compare concentration but with security protection, on-line monitoring and report
It is alert.
Li qian move spectrometer and are generally made up of ionization source, reaction chamber, ion gate, drift tube and detector.It is conventional from
Sub-ization source is radioactive source (predominantly Ni-63).Because the energy of such radioactive source is high, almost all of material can be electric
From, i.e., non-selective ionization, therefore there is serious interference, rate of false alarm is considerably increased, while conventional Li qian are moved at present
It is long to there is detection time in spectrometer, sensitivity is low, without overload protection the shortcomings of；The sample air that Li qian move spectrometer was both needed to
The filter wherein impurity such as moisture, to ensure accuracy of detection, is filtered frequently with pellicle at present, but pellicle is easy to come off.
Utility model content
The purpose of this utility model is to overcome defect of the prior art, it is proposed that a kind of ionic migration spectrometer, and it is tied
Structure is simple, operates steadily, rate of false alarm is low, detection time is short, and sensitivity is high, can realize overload protection, can effectively prevent semi-transparent
Film comes off, it is ensured that the filter effect of sample air.
To achieve the above object, the utility model is adopted the following technical scheme that：
A kind of ionic migration spectrometer, including air inlet section, detection section, air outlet section and controller, the air inlet section are included successively
Air inlet, helix tube and the air inlet buffering area of connection；The detection section is connected with air inlet buffering area, and the detection section is included successively
Pellicle, drift tube and the detector of connection, the drift tube set the outlet of drift gas close to the side of the detector, described
Drift tube sets drift gas return port close to the side of the pellicle, between the drift gas outlet and drift gas return port
The drift air pump being sequentially connected, device for drying and filtering and dopant bottle are set；The entrance of the air outlet section is arranged at the detection section
Ionization area, the air outlet section includes recoil module and the magnetic valve one, measuring pump and the gas outlet that are sequentially connected.
It is preferred that, the recoil module include be sequentially connected back flushing air entrance, magnetic valve two, recoil air pump, recoiled
Filter and needle-valve, the outlet pipe section of the needle-valve are incorporated to the entrance pipeline section of the magnetic valve one.
It is preferred that, the helix tube is less than 30mm close to the air inlet setting buffers, air line distance between the two, more
It is preferred that 15~20mm.
It is preferred that, the pellicle is silicon rubber or glass fibre membrane.
It is preferred that, the periphery of the pellicle is fixed using sheet metal.
It is preferred that, the dopant bottle accommodates ammonia spirit.
It is preferred that, the activated carbon being impregnated in the salt of copper and zinc is set in the back-flushing filter.
It is preferred that, the detection range of the ionic migration spectrometer is ppb to ppm.
It is preferred that, the ionization source of the ionic migration spectrometer is radionuclide Ni-63.
It is preferred that, the ionization source has protection type coating.
It is preferred that, the corresponding detection signal of controller connection, including temperature signal, pressure signal, flow signal, inspection
Survey device signal etc., and the corresponding function to realize each parameter of regulation is carried out to corresponding signal, and detector signal is exported
Row pernicious gas type, flow, conversion of concentration etc..
Compared with prior art, the utility model has the advantages that：
AF panel (ammonia spirit) is realized by doping techniques, its principle is by mixing NH in air is detected3,
Toxic gas affinity in ion migration processes compares NH3Height, non-toxic gas affinity in ion migration processes compares NH3It is low,
The utility model use ionic migration spectrometer by and NH3The comparison of affinity excludes non-toxic gas, so as to ensure low mistake
Report rate, makes False Rate be reduced to less than 3%；
It can reduce sample air stream to a certain extent to drift tube in the air inlet setting buffers helix tube of pellicle import
The influence of internal gas balance, it is to avoid sample air stream directly collides pellicle with vertical direction, while on pellicle periphery
Fixed using sheet metal, be further ensured that the steadiness of pellicle, improve filter effect；
The impurity such as smog, inorganic molecule and hydrone in inlet air are filtered out using pellicle, it is ensured that through having for film
The percentage of poisonous gas, is significantly reduced by the relative humidity of sample air after pellicle, while pernicious gas is relatively dense
Degree is improved, and is further removed moisture in sample air while will export drift gas and be drawn through device for drying and filtering, will be floated
Move pipe internal moisture and be maintained at 100~500ppm, which increase the response sensitivity of spectrometer, and shorten detection time；
There is provided recoil module, if the concentration of the material detected exceedes predetermined threshold, closes air inlet section, cuts automatically
Recoil pattern is changed to, air is sucked through back-flushing filter from recoil gas port, is introduced in and sets by the air of filtration, purification
In standby, from air inlet discharge, the overload protection of material is realized, while the pollution of sensor unit can be eliminated, to realize sensing
The protection of device, reduces the replacement frequency of sensor；
The air outlet section of the recoil module and instrument is separately separately provided, the technical scheme phase with shared air pump
Than it can shorten the continuous operating time of measuring pump and recoil air pump, extend the life-span of instrument, reduce replacement cost.
Brief description of the drawings
Fig. 1 is the structural representation of ionic migration spectrometer described in the utility model；
Reference in figure is：
1st, air inlet section；2nd, section is detected；3rd, air outlet section；4th, controller；11st, air inlet；12nd, helix tube；13rd, air inlet is buffered
Area；21st, pellicle；22nd, drift tube；23rd, detector；24th, drift gas outlet；25th, drift about gas return port；26th, drift about air pump；
27th, device for drying and filtering；28th, dopant bottle；31st, magnetic valve one；32nd, measuring pump；33rd, gas outlet；34th, back flushing air entrance；35th, it is electric
Magnet valve two；36th, recoil air pump；37th, back-flushing filter；38th, needle-valve.
Embodiment
With reference to the accompanying drawings and examples, embodiment of the present utility model is further described.Implement below
Example is only used for clearly illustrating the technical solution of the utility model, and protection model of the present utility model can not be limited with this
Enclose.
Fig. 1 is the structural representation of ion mobility spectrometry described in the utility model, and the ionic migration spectrometer includes air inlet
Section 1, detection section 2, air outlet section 3 and controller 4, the air inlet section 1 include air inlet 11, helix tube 12 and the air inlet being sequentially connected
Buffering area 13；The detection section 2 is connected with air inlet buffering area 13, and the detection section 2 includes pellicle 21, the drift being sequentially connected
Pipe 22 and detector 23, the drift tube 22 set drift gas outlet 24, the drift tube close to the side of the detector 23
22 set drift gas return port 25 close to the side of the pellicle 21, in the drift gas outlet 24 and drift gas return port 25
Between set the drift air pump 26 being sequentially connected, device for drying and filtering 27 and dopant bottle 28；The entrance of the air outlet section 3 is arranged at
The ionization area of the detection section 2, the air outlet section 3 includes recoil module and the magnetic valve 1, the measuring pump 32 that are sequentially connected
With gas outlet 33；The helix tube 12 is set close to the air inlet buffering area 13, and air line distance between the two is less than 30mm, excellent
Select 15~20mm.
The toxic molecule flowed between the air inlet section 1 and air outlet section 3 enters detection zone, the spiral shell by pellicle 21
Coil 12 ensures that sample air is slanted into air inlet buffering area 13 at a certain angle, it is to avoid its normal impact pellicle, to prevent
It is translucent to come off；The air inlet buffering area 13 is that pernicious gas adds the residence time by pellicle 21 into drift tube,
To ensure that more pernicious gases enter drift tube, detection efficiency is improved.Drift gas was filtered dry by the drift air pump 26
Again the ionization area of drift tube 22 is delivered to after dry, further the moisture in reduction drift tube, it is ensured that accuracy of detection.
As shown in figure 1, in a preferred embodiment, the recoil module includes back flushing air entrance 34, the electricity being sequentially connected
Magnet valve 2 35, recoil air pump 36, back-flushing filter 37 and needle-valve 38, the outlet pipe section of the needle-valve 38 are incorporated to the magnetic valve one
31 entrance pipeline section, the detection range of the ionic migration spectrometer is ppb to ppm.
During normal detection, the needle-valve 38 is closed mode, and as shown by arrows, it flows successively for the flow direction of sample air
Through magnetic valve 1, measuring pump 32 and gas outlet 33, discharge ionic migration spectrometer is into external environment, i.e., in normal detection,
Back-flushing filter 36 is not in working condition.
When the concentration of the material detected exceedes predetermined threshold, measuring pump 32 and magnetic valve 1 are closed, back flushing air is opened
Pump 36 and needle-valve 38, automatically switch to recoil pattern, and as shown by arrows, it flows through back flushing air successively for the flow direction for the air that recoils
Entrance 34, magnetic valve 2 35, recoil air pump 36, back-flushing filter 37, needle-valve 38, recoil air pass through the salt for being impregnated in copper and zinc
In the back-flushing filter 37 of activated carbon carry out filtration, purification, so as to remove the pernicious gas into ionic migration spectrometer, and lead to
Cross air inlet 11 to drain into external environment, realize the protection of the overload protection and sensor of material, reduce the replacing frequency of sensor
Rate.
The controller 4 and detector 23, measuring pump 33, drift air pump 26, recoil air pump 36, magnetic valve 1, electromagnetism
Valve 2 35, temperature sensor (not shown), pressure sensor (not shown), thermostatically-controlled equipment (not shown), flow sensor
(not shown) etc. is connected, to realize the Automated condtrol of instrument and the output of various information.
In a preferred embodiment, the film 21 is 5~60 μm of silicon rubber or glass fibre membrane, and its periphery is using gold
Category piece fix so that pellicle will not draught head and it is raised, with ensure in the short period pass through pellicle toxic gas hundred
Divide ratio.
In a preferred embodiment, the dopant bottle 28 accommodates ammonia spirit, real by the doping techniques of ammonia spirit
Existing AF panel, effectively reduces rate of false alarm, the ammonia spirit also can be replaced other feasible dopants.
In a preferred embodiment, the ionization source of the ionic migration spectrometer is radionuclide Ni-63, the radiation
Property nucleic Ni-63 there is protection type coating, to eliminate radiation injury closely to human body, it is ensured that the person peace of operating personnel
It is complete and healthy.
From above-described embodiment, ionic migration spectrometer described in the utility model is simple in construction, operates steadily, wrong report
Rate is low, and detection time is short, and sensitivity is high, and can realize overload protection, the service life of equipment has been effectively ensured, while can be effective
Prevent coming off for pellicle, it is ensured that the filter effect and accuracy of detection of sample air.
Specific embodiment of the utility model is described in detail above, but it is only used as example, the utility model
It is not restricted to particular embodiments described above.To those skilled in the art, it is any that the practicality is equal
Modifications and substitutions are also all among category of the present utility model.Therefore, the institute in the case where not departing from spirit and scope of the present utility model
The impartial conversion and modification of work, should all cover in the range of the utility model.
Claims (8)
1. a kind of ionic migration spectrometer, including air inlet section (1), detection section (2), air outlet section (3) and controller (4), its feature exist
In the air inlet section (1) includes air inlet (11), helix tube (12) and the air inlet buffering area (13) being sequentially connected；The detection
Section (2) connect with air inlet buffering area (13), it is described detect section (2) including be sequentially connected pellicle (21), drift tube (22) and
Detector (23), the drift tube (22) sets drift gas outlet (24), the drift close to the side of the detector (23)
The side for managing (22) close described pellicle (21) sets drift gas return port (25), in the drift gas outlet (24) and drift
The drift air pump (26) being sequentially connected, device for drying and filtering (27) and dopant bottle (28) are set between gas return port (25)；It is described
The entrance of air outlet section (3) is arranged at the ionization area of the detection section (2), and the air outlet section (3) is including recoil module and successively
The magnetic valve one (31) of connection, measuring pump (32) and gas outlet (33).
2. a kind of ionic migration spectrometer according to claim 1, it is characterised in that the recoil module includes being sequentially connected
Back flushing air entrance (34), magnetic valve two (35), recoil air pump (36), back-flushing filter (37) and needle-valve (38), the needle-valve
(38) outlet pipe section is connected to the entrance pipeline section of the magnetic valve one (31).
3. a kind of ionic migration spectrometer according to claim 1, it is characterised in that the helix tube (12) is entered described in
Gas buffering area (13) is set, and air line distance between the two is less than 30mm.
4. a kind of ionic migration spectrometer according to claim 1, it is characterised in that the pellicle (21) be silicon rubber or
Glass fibre membrane.
5. a kind of ionic migration spectrometer according to claim 1, it is characterised in that the periphery of the pellicle (21) is used
Sheet metal is fixed.
6. a kind of ionic migration spectrometer according to claim 1, it is characterised in that the dopant bottle (28) accommodates ammoniacal liquor
Solution.
7. a kind of ionic migration spectrometer according to claim 2, it is characterised in that set in the back-flushing filter (37)
It is impregnated in the activated carbon in the salt of copper and zinc.
8. a kind of ionic migration spectrometer according to claim 1, it is characterised in that the detection model of the ionic migration spectrometer
Enclose for ppb to ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621344818.6U CN206480592U (en) | 2016-12-08 | 2016-12-08 | A kind of ionic migration spectrometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621344818.6U CN206480592U (en) | 2016-12-08 | 2016-12-08 | A kind of ionic migration spectrometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206480592U true CN206480592U (en) | 2017-09-08 |
Family
ID=59756837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621344818.6U Active CN206480592U (en) | 2016-12-08 | 2016-12-08 | A kind of ionic migration spectrometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206480592U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487887A (en) * | 2019-09-19 | 2019-11-22 | 北京金茂数源科技发展有限公司 | Chemical gas trace detector |
-
2016
- 2016-12-08 CN CN201621344818.6U patent/CN206480592U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110487887A (en) * | 2019-09-19 | 2019-11-22 | 北京金茂数源科技发展有限公司 | Chemical gas trace detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103728163B (en) | Full tritium Quick sampling system in a kind of gas | |
| CN107621393B (en) | A kind of concentration determination method using sulfur trioxide sampling apparatus in flue gas | |
| US20190025264A1 (en) | Area monitoring device, and method of operating same | |
| CN101965512A (en) | Gas identification authentication method and equipment in the aircraft cabin | |
| CN206387766U (en) | A kind of fixed detector of chemical warfare agent and toxic gas | |
| CN105247363A (en) | Real-time on-site gas analysis network for ambient air monitoring and active control and response | |
| CN206379328U (en) | A kind of ionic migration spectrometer for being used to detect indusrial toxic gas | |
| CN202886326U (en) | Gas analyzer | |
| CN206480592U (en) | A kind of ionic migration spectrometer | |
| CN102692398A (en) | Gas concentration measuring apparatus | |
| CN202404044U (en) | Smoke monitoring system | |
| CN105334276A (en) | Anti-terrorist safety inspection method and equipment for explosives | |
| CN104020119A (en) | Wet type ultraviolet-absorption-method online detection method for micro-nano aerosol of production environment | |
| CN205910038U (en) | Smoke discharging monitoring system | |
| CN220084466U (en) | Filterable flue gas on-line monitoring equipment | |
| CN110420505A (en) | It filters the Failure Alarm method of malicious device and filters malicious device | |
| CN110044836A (en) | FUSION WITH MULTISENSOR DETECTION device towards toxic gas | |
| CN216144689U (en) | Ozone and VOC content detection system based on difference method | |
| CN209471094U (en) | Mail security detection device | |
| CN106872540A (en) | A kind of formaldehyde, ammonia detection means and its detection method | |
| CN217156192U (en) | High-flux detector for detecting explosive particles and drug particles | |
| CN208537577U (en) | A kind of vent cabinet wind speed monitoring alarm device | |
| CN209673143U (en) | A kind of civilian Atmosphere Environment Monitoring System Bases | |
| CN110455997A (en) | A kind of integrated gases acquisition integral cabinet | |
| WO2013032360A1 (en) | Method and system for detecting and determining the location of unwanted substances in monitored zones and outlet unit for an air collector for such a system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |