CN205879861U - Self -cleaning PID detector - Google Patents
Self -cleaning PID detector Download PDFInfo
- Publication number
- CN205879861U CN205879861U CN201620183110.0U CN201620183110U CN205879861U CN 205879861 U CN205879861 U CN 205879861U CN 201620183110 U CN201620183110 U CN 201620183110U CN 205879861 U CN205879861 U CN 205879861U
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- China
- Prior art keywords
- way valve
- ionization chamber
- adsorption tanks
- air pump
- interface
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Abstract
The utility model discloses a self -cleaning PID detector, including ultraviolet trigger device, air pump, adsorption tanks, filter, two three -way valves of entry, two three -way valves of export, ionization chamber, sampling entry and exhaust outlet, an interface connection of sampling entry and two three -way valves of entry, two three -way valves that enter the mouths have two interfaces to connect the one end of adsorption tanks, the one end of filter respectively in addition, two three - way valve connection of the other end and export of adsorption tanks, and the other end of filter is connected with the admission line of ionization chamber, and the exhaust duct of ionization chamber is connected with the one end of air pump, and the other end of air pump and export two three - way valve connection exports and is provided with the interface in addition on two three -way valves and is connected with exhaust outlet, the ionization chamber is located ultraviolet trigger device's inside, under the ultraviolet lamp. The utility model discloses a PID detector through sample in turn measure with gas circulation structure at closed zero point, realize zero point automatic on -the -spot calibrate and the testing process optical window from cleaning function.
Description
Technical field
This utility model relates to gas detection technology field, specifically a kind of self-cleaning PID detector, is suitable for
Detection in volatile organic matter.
Background technology
Photoionization detector is used for modern society's detection to volatile organic matter, it is thus achieved that widely should
With, the most more instruments being applied to hand-held portable.Along with the raising of the requirement to environmental quality, use
Get more and more in the fixed application being arranged on various environment.Application in such a case requires artificial
Getting involved less, and photoionization detector is in this case, the optical window of sensing chamber easily pollutes and causes system
Detection was lost efficacy or data distortion, and null offset is also the bottleneck of a restriction application.
The instrument equipped in each occasion at present, uses open adsorption tanks for zero gas, by sky
Adsorption of Organic in gas falls as zero point correction gas, and open environment causes adsorbent in the shortest time
Interior saturated, cause safeguarding frequently；Owing to optical window is less, ultraviolet is very sensitive to the pollutant of window, cause
Instrument either null offset or span drift are the highest, greatly constrain this quasi-instrument making at the scene
With.
Utility model content
The problem existed for prior art, this utility model provides a kind of self-cleaning PID detector.
This utility model solves the technical scheme of described technical problem, design a kind of self-cleaning PID detection
Device, it is characterised in that include burst of ultraviolel device, air pump, adsorption tanks, filter, entrance two-bit triplet
Valve, outlet two-position three-way valve, ionization chamber, sample inlet and waste gas outlet；Sample inlet and entrance two three
One interface of logical valve connects, entrance two-position three-way valve separately have two interfaces connect respectively adsorption tanks one end,
One end of filter, the other end of adsorption tanks is connected with outlet two-position three-way valve, the other end of filter and electricity
Admission line from room connects, and the discharge duct of ionization chamber is connected with one end of air pump, the other end of air pump and
Outlet two-position three-way valve connects, and outlet two-position three-way valve is separately provided with interface and is connected with waste gas outlet；Described
Ionization chamber is positioned at the inside of burst of ultraviolel device, the underface of uviol lamp.
Compared with prior art, it has the beneficial effects that this utility model:
(1) using enclosed adsorption tanks, the adsorbent in measuring state tank is enclosed so that
The replacing maintenance times of adsorbent greatly reduces；
(2) in zero point correction state, the stream of ionization chamber, air pump, adsorbent one enclosed of formation, one
Aspect can carry out zero point correction, on the other hand can utilize the pollution to window of sampling that burst of ultraviolel produces
Thing is carried out.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model a kind of self-cleaning a kind of embodiment of PID detector.
In above figure: 1 uviol lamp and excite component, 2 air pumps, 3 adsorption tanks, 4 filters, 5 entrances
Two-position three-way valve, 6 outlet two-position three-way valve, 7 ionization chambers, 8 sample inlet, 9 waste gas outlets.
Detailed description of the invention
Below with reference to accompanying drawing, this utility model is described further, but this practicality should not limited with this
Novel protection domain.
For convenience of explanation with understand the technical solution of the utility model, term position involved below, as
Up and down, left and right, be all as the criterion with the orientation shown by accompanying drawing.
This utility model provides a kind of self-cleaning PID detector, it is characterised in that include burst of ultraviolel device
1, air pump 2, adsorption tanks 3, filter 4, entrance two-position three-way valve 5, outlet two-position three-way valve 6, ionization
Room 7, sample inlet 8 and waste gas outlet 9.Sample inlet 8 and an interface of entrance two-position three-way valve 5
Connecting, entrance two-position three-way valve 5 separately has two interfaces to connect one end of adsorption tanks 3, filter 4 respectively
One end, the other end of adsorption tanks 3 is connected with outlet two-position three-way valve 6, the other end of filter 4 and ionization
The admission line of room 7 connects, and the discharge duct of ionization chamber 7 is connected with one end of air pump 2, air pump 2 another
One end is connected with outlet two-position three-way valve 6, and outlet two-position three-way valve 6 is separately provided with interface and waste gas outlet
9 connect.Described ionization chamber 7 is positioned at the inside of burst of ultraviolel device 1, the underface of uviol lamp.
The middle part of described adsorption tanks 3 is provided with activated carbon adsorption layer, adsorption tanks 3 and entrance two-position three-way valve 5
The interface connecting end connect with the space above activated carbon adsorption layer, adsorption tanks 3 and export two-position three-way valve
6 interfaces connecting end connect with the space below activated carbon adsorption layer.
This utility model device has two duties: measuring state and cleaning and zero point correction state.?
During measuring state, entrance two-bit triplet electromagnetic valve 5 and outlet two-bit triplet electromagnetic valve 6 link, sample gas
Through sample inlet 8, entrance two-bit triplet electromagnetic valve 5 filter 4, ionization chamber 7, air pump 2, outlet two
Position-3-way solenoid valve 6, waste gas outlet 9 form an open type gas circuit, and sample gas passes through purple at ionization chamber 7
Outer lamp and excite component to ionize and form ion current, by measuring ion current and then obtaining in sample gas
Organic relative amount, if being connected to standard calibration gas at measuring state sample inlet 8, so that it may
To realize the calibration to device.
When cleaning with zero point correction state, entrance two-bit triplet electromagnetic valve 5 and outlet two-bit triplet electromagnetic valve
6 linkage, sample inlet 8 and waste gas outlet 9 are blocked, entrance two-bit triplet electromagnetic valve 5, filter 4,
Ionization chamber 7, air pump 2, outlet two-bit triplet electromagnetic valve 6, adsorption tanks 3 form a closed cycle gas circuit,
In closed cycle, due to the adsorption of adsorption tanks, in ionization chamber, there is no Organic substance, ionization
Gas in room carries out zero point correction as zero point correction gas, simultaneously because ultra-vioket radiation, the oxygen of ionization chamber
Gas excites formation ozone, gas circulating flow in gas circuit, and ozone directly reaches point with the Organic substance effect of runner
The effect solved and clean.
The PID detector of this utility model design is followed by the zero gas of sampling and measuring alternately and Guan Bi
Ring constructs, it is achieved the automatic field calibration of zero point and the self-cleaning function of detection process optical window.
The announcement of book and teaching according to the above description, this utility model those skilled in the art can also be right
Above-mentioned embodiment changes and revises.Therefore, this utility model is not limited to be disclosed above and describe
Detailed description of the invention, should also be as falling into power of the present utility model to modifications and changes more of the present utility model
In the protection domain that profit requires.Although additionally, this specification employs some specific terms, but these
Term merely for convenience of description, does not constitute any restriction to this utility model.
This utility model is not addressed part and is applicable to prior art.
Claims (2)
1. a self-cleaning PID detector, it is characterised in that include burst of ultraviolel device, air pump, suction
Attached tank, filter, entrance two-position three-way valve, outlet two-position three-way valve, ionization chamber, sample inlet and waste gas
Outlet；Sample inlet is connected with an interface of entrance two-position three-way valve, and entrance two-position three-way valve separately has two
Interface connects one end of one end of adsorption tanks, filter respectively, the other end of adsorption tanks and outlet two-bit triplet
Valve connects, and the other end of filter is connected with the admission line of ionization chamber, the discharge duct of ionization chamber and air pump
One end connect, the other end of air pump is connected with outlet two-position three-way valve, exports on two-position three-way valve and separately arranges
Interface is had to be connected with waste gas outlet；Described ionization chamber is positioned at the inside of burst of ultraviolel device, uviol lamp just under
Side.
A kind of self-cleaning PID detector the most according to claim 1, it is characterised in that described absorption
The middle part of tank is provided with the interface connecting end and the work of activated carbon adsorption layer, adsorption tanks and entrance two-position three-way valve
Property charcoal adsorption layer above space connection, adsorption tanks are connected interface and the activated carbon of end with exporting two-position three-way valve
Space connection below adsorption layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183110.0U CN205879861U (en) | 2016-03-10 | 2016-03-10 | Self -cleaning PID detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620183110.0U CN205879861U (en) | 2016-03-10 | 2016-03-10 | Self -cleaning PID detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205879861U true CN205879861U (en) | 2017-01-11 |
Family
ID=57687791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620183110.0U Expired - Fee Related CN205879861U (en) | 2016-03-10 | 2016-03-10 | Self -cleaning PID detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205879861U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828055A (en) * | 2017-04-18 | 2018-11-16 | 嘉兴博感科技有限公司 | A kind of photoion detection system |
| NL2022204B1 (en) * | 2018-12-13 | 2020-07-03 | Green Vision Holding Bv | METHOD AND APPARATUS FOR DETERMINING THE CONCENTRATION OF A GASEOUS POLLUTION IN A VERY HIGH PURITY PRODUCT GAS |
-
2016
- 2016-03-10 CN CN201620183110.0U patent/CN205879861U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108828055A (en) * | 2017-04-18 | 2018-11-16 | 嘉兴博感科技有限公司 | A kind of photoion detection system |
| CN108828055B (en) * | 2017-04-18 | 2021-06-29 | 嘉兴博感科技有限公司 | Light ion detection system |
| NL2022204B1 (en) * | 2018-12-13 | 2020-07-03 | Green Vision Holding Bv | METHOD AND APPARATUS FOR DETERMINING THE CONCENTRATION OF A GASEOUS POLLUTION IN A VERY HIGH PURITY PRODUCT GAS |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: GALAXY ERA SCIENCE & TECHNOLOGY CO., LTD. Document name: Notification of Termination of Patent Right |
|
| 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: 20170111 Termination date: 20190310 |