CN115128153A - Device for improving accuracy of portable VOCs detector - Google Patents
Device for improving accuracy of portable VOCs detector Download PDFInfo
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- CN115128153A CN115128153A CN202210748830.7A CN202210748830A CN115128153A CN 115128153 A CN115128153 A CN 115128153A CN 202210748830 A CN202210748830 A CN 202210748830A CN 115128153 A CN115128153 A CN 115128153A
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- signal acquisition
- fid detector
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- main body
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 239000007789 gas Substances 0.000 claims description 30
- 238000010926 purge Methods 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000012634 fragment Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- 238000010408 sweeping Methods 0.000 abstract 1
- 238000004140 cleaning Methods 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000005389 magnetism Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/62—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode
- G01N27/626—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating the ionisation of gases, e.g. aerosols; by investigating electric discharges, e.g. emission of cathode using heat to ionise a gas
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
The invention discloses a device for improving the accuracy of a portable detector for VOCs (volatile organic compounds), which comprises an instrument main body, wherein a detection cavity is arranged in the instrument main body, an FID (field emission device) detector main body is arranged on one side in the instrument main body, a signal acquisition module is arranged at the upper end in the FID detector main body, a signal collector is arranged at the detection end of the signal acquisition module, and a signal acquisition outgoing line is arranged at the output end of the signal acquisition module; still include the high-pressure gas holder, its setting is in the rear end of FID detector main part, the bottom of high-pressure gas holder is provided with the gas transmission and is responsible for, the one end that the gas transmission was responsible for is provided with first pipe and the second of sweeping respectively and sweeps the pipe, the gas transmission is responsible for and is close to the one end of high-pressure gas holder and installs the solenoid valve, and through this kind of mode, utilize explosion-proof hand operator control solenoid valve to sweep, the FID detector can be with convenient mode protection ignition coil and realize inside cleanness fast.
Description
Technical Field
The invention relates to the technical field of hydrogen flame ionization detectors, in particular to a device for improving the accuracy of a portable detector for VOCs.
Background
FID uses hydrogen as a combustion gas and burns at a nozzle in a cylindrical electrode, the voltage between the nozzle and the electrode is up to several hundred volts, and when carbonaceous solutes burn at the nozzle, the resulting electron/ion pairs are collected by the nozzle and the electrode to produce an electric current which is amplified and transmitted to an a/D converter of a recorder or computer data acquisition system.
For example, chinese granted patent publication No. CN215812601U entitled "an FID detector analysis apparatus" includes an FID housing, a sample introduction base, a heater strip power spring top, a heater strip power interface pin, a collector, a collection signal line, a hydrogen gas inlet and a sample gas inlet, an ionization chamber is provided in the FID housing, a nut cover is provided at the top of the FID housing, ceramic heating holders are provided on two sides of the inside of the ionization chamber, the heater strip is connected between the ceramic heating holders, and the collector and the heater strip are both disposed in the ionization chamber. The collector and the heating wires can be taken out for maintenance and cleaning by disassembling the nut cover, and the sample injection base is in threaded sealing connection with the FID outer cover, so that the sample injection base is convenient to disassemble, clean and maintain.
In above-mentioned prior art, ponding can appear in the inside long-term burning of igniteing of detector, has the impaired danger that leads to the ignition coil short circuit easily with polluting the signal, and the FID detector is inside very difficult to be cleared up after polluting simultaneously, and the aqueous vapor that the burning produced and pollutant are difficult to be directly discharged through the spark arrester from the detector is inside, consequently unsatisfied current demand, to this we have proposed the device that improves the portable detector degree of accuracy of VOCs.
Disclosure of Invention
The invention aims to provide a device for improving the accuracy of a portable detector for VOCs (volatile organic compounds), so as to solve the problem of how to protect an ignition coil and quickly realize internal cleaning of the FID detector in a convenient manner.
In order to achieve the purpose, the invention provides the following technical scheme: a device for improving the accuracy of a portable VOCs detector comprises an instrument main body, wherein a detection cavity is arranged in the instrument main body, an FID detector main body is arranged on one side in the instrument main body, a signal acquisition module is arranged at the upper end in the FID detector main body, a signal collector is arranged at the detection end of the signal acquisition module and extends into the detection cavity, and a signal acquisition outgoing line is arranged at the output end of the signal acquisition module;
still include the high pressure gas holder, its setting is in the rear end of FID detector main part, the bottom of high pressure gas holder is provided with the gas transmission and is responsible for, the one end that the gas transmission was responsible for is provided with first blowing respectively and sweeps the pipe with the second, and first blowing sweeps the inside that pipe and second swept the pipe and all extended to FID detector main part, the solenoid valve is installed to the one end that the gas transmission was responsible for and is close to the high pressure gas holder.
Preferably, ignition coil is installed to inside one side of FID detector main part, ignition coil's below is provided with the mount pad, and the mount pad is fixed mutually with FID detector main part, the electromagnetism shell fragment is installed to the one end of mount pad, and one side and the mount pad of electromagnetism shell fragment are connected through the pivot.
Preferably, the flame arrester is installed to the inside lower extreme of FID detector main part, and the outer wall and the FID detector main part sealing connection of flame arrester, the upper end of flame arrester is equipped with V type groove.
Preferably, epoxy resin is filled between the FID detector main body and the signal acquisition module, and the epoxy resin wraps the whole signal acquisition module and one end of the signal acquisition outgoing line.
Preferably, one side of the lower end of the signal collector is provided with a spray pipe, one end of the spray pipe extends to the outside of the FID detector main body, and the spray pipe conveys the mixed gas of hydrogen, air and gas to be detected towards the inside of the detection cavity.
Preferably, the input end of the electromagnetic valve is connected to an external explosion-proof manual operator through Bluetooth.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention can realize the cleaning of the interior, after the detection work is finished, the electromagnetic valve is controlled by the explosion-proof manual operator to purge, the high-pressure air in the high-pressure air storage tank is respectively conveyed to the first purging pipe and the second purging pipe through the air transmission main pipe, so that the high-pressure air forms impact in the FID detector main body, water and dirt attached to the inner wall are quickly separated from the high-pressure air, and then the high-pressure air falls to the flame arrester under the action of gravity, the flame arrester is of a V-shaped structure, the moisture generated by combustion conveniently flows downwards at the edge position of the wall part of the inner cylinder of the FID detector main body, the flame arrester is discharged through the funnel type structure, the discharging efficiency of the moisture and pollutants is greatly improved, the problem that the performance parameter index cannot reach the relevant detection standard due to the pollution in the FID detector is solved, and the cleaning of the interior of the FID detector main body can be quickly realized through the mode, need not regularly to carry out the dismouting to the device, reduce the maintenance frequency to the FID detector, reduce the inside cleaning work of detector, reduce the number of times of wasing the spark arrester, live time is more permanent, reduces the inside pollution of instrument and equipment FID, improves the high sensitivity of instrument and equipment field usage, high accuracy to provide true, effectual detected data.
2. According to the invention, the electromagnetic shrapnel is arranged below the ignition coil, when ignition is carried out, the electromagnetic shrapnel is in a horizontal state, so that the ignition coil can be communicated with the detection cavity, after ignition is successful, electricity is conducted to activate the magnetism of the electromagnetic shrapnel, one end of the electromagnetic shrapnel is enabled to rotate by ninety degrees by taking the circle center of the rotating shaft of the mounting seat as an original point, the ignition coil and the detection cavity are isolated, then the ignition coil is in an independent protection state except detection, water gas and pollutants generated during combustion are effectively isolated from contacting with the ignition coil, and the service life of the ignition coil is prolonged.
Drawings
FIG. 1 is a perspective view of the detector of the present invention;
FIG. 2 is a side view of the internal structure of the monitor of the present invention;
FIG. 3 is a perspective view of the FID detector of the present invention;
FIG. 4 is a schematic diagram of the internal structure of the FID detector of the present invention during operation;
FIG. 5 is a schematic diagram of the internal structure of the FID detector of the present invention after the operation is completed.
In the figure: 1. an instrument body; 2. a FID detector body; 3. a high pressure gas storage tank; 7. a signal acquisition outgoing line; 11. an epoxy resin; 12. a signal acquisition module; 13. a signal collector; 14. a nozzle; 15. a first purge tube; 16. a second purge tube; 17. an ignition coil; 18. an electromagnetic spring sheet; 19. a flame arrestor; 20. a gas transmission main pipe; 21. an electromagnetic valve; 22. a V-shaped groove; 23. and (7) mounting a seat.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, an embodiment of the present invention is shown: a device for improving the accuracy of a portable VOCs detector comprises an instrument main body 1, wherein a detection cavity is arranged inside the instrument main body 1, an FID detector main body 2 is installed on one side inside the instrument main body 1, a signal acquisition module 12 is arranged at the upper end inside the FID detector main body 2, a signal collector 13 is installed at the detection end of the signal acquisition module 12, the signal collector 13 extends into the detection cavity, and a signal acquisition outgoing line 7 is arranged at the output end of the signal acquisition module 12;
still include high-pressure gas holder 3, its setting is in the rear end of FID detector main part 2, and the bottom of high-pressure gas holder 3 is provided with the gas transmission and is responsible for 20, and the one end that the gas transmission was responsible for 20 is provided with first purge tube 15 and second purge tube 16 respectively, and just first purge tube 15 and second purge tube 16 all extend to the inside of FID detector main part 2, and the solenoid valve 21 is installed to the one end that the gas transmission was responsible for 20 and is close to high-pressure gas holder 3.
Referring to fig. 3 and 4, an ignition coil 17 is installed at one side inside the FID detector main body 2, a mounting seat 23 is installed below the ignition coil 17, the mounting seat 23 is fixed to the FID detector main body 2, an electromagnetic spring piece 18 is installed at one end of the mounting seat 23, and one side of the electromagnetic spring piece 18 is connected to the mounting seat 23 through a rotating shaft.
Referring to fig. 2, a flame arrester 19 is installed at the lower end inside the FID detector main body 2, the outer wall of the flame arrester 19 is connected with the FID detector main body 2 in a sealing manner, and a V-shaped groove 22 is formed at the upper end of the flame arrester 19.
Referring to fig. 2, an epoxy resin 11 is filled between the FID detector main body 2 and the signal acquisition module 12, and the epoxy resin 11 wraps the whole signal acquisition module 12 and one end of the signal acquisition outgoing line 7.
Referring to fig. 2, a nozzle 14 is disposed at one side of the lower end of the signal collector 13, one end of the nozzle 14 extends to the outside of the FID detector main body 2, and the nozzle 14 conveys a mixture of hydrogen, air and the gas to be detected toward the inside of the detection chamber.
Referring to fig. 2, the input end of the electromagnetic valve 21 is connected to the external explosion-proof manual operator through bluetooth.
The working principle is as follows: when the device is used, the spray pipe 14 conveys the mixed gas of hydrogen and gas to be detected to the inside of the detection cavity, the mixed gas is ignited under the action of the ignition coil 17, after ignition is successful, the electricity is conducted to activate the magnetism of the electromagnetic elastic sheet 18, one end of the electromagnetic elastic sheet 18 is enabled to rotate ninety degrees by taking the circle center of the rotating shaft of the mounting seat 23 as an original point under the magnetic adsorption action, the ignition coil 17 and the detection cavity are isolated, the electromagnetic valve 21 is controlled by using an explosion-proof manual operator to purge, high-pressure air in the high-pressure air storage tank 3 is respectively conveyed to the first purging pipe 15 and the second purging pipe 16 through the air conveying main pipe 20, so that the high-pressure air forms impact in the FID detector main body 2, water and dirt attached to the inner wall are rapidly separated from the high-pressure air, the high-pressure air further falls to the flame arrester 19 under the action of gravity, the flame arrester 19 is of a V-shaped structure, and moisture generated by combustion conveniently flows downwards at the edge position of the wall part of the FID detector main body 2, and exits through flame arrestor 19.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (6)
1. The utility model provides an improve device of portable detector degree of accuracy of VOCs, includes instrument main part (1), the inside of instrument main part (1) is provided with the detection chamber, FID detector main part (2) are installed to one side of instrument main part (1) inside, the inside upper end of FID detector main part (2) is provided with signal acquisition module (12), signal acquisition unit (13) are installed to the sense terminal of signal acquisition module (12), and signal acquisition unit (13) extend to the inside that detects the chamber, the output of signal acquisition module (12) is provided with signal acquisition lead-out wire (7), its characterized in that:
still include high pressure gas holder (3), its setting is in the rear end of FID detector main part (2), the bottom of high pressure gas holder (3) is provided with gas transmission and is responsible for (20), the one end that gas transmission was responsible for (20) is provided with first purging pipe (15) respectively and the second purges pipe (16), and first purging pipe (15) and second purge the inside that pipe (16) all extended to FID detector main part (2), solenoid valve (21) are installed to the one end that gas transmission was responsible for (20) and is close to high pressure gas holder (3).
2. The apparatus of claim 1, wherein the apparatus further comprises: ignition coil (17) are installed to inside one side of FID detector main part (2), the below of ignition coil (17) is provided with mount pad (23), and mount pad (23) are fixed mutually with FID detector main part (2), electromagnetism shell fragment (18) are installed to the one end of mount pad (23), and one side and mount pad (23) of electromagnetism shell fragment (18) are connected through the pivot.
3. The apparatus of claim 1, wherein the apparatus further comprises: flame arrester (19) are installed to the inside lower extreme of FID detector main part (2), and the outer wall and the FID detector main part (2) sealing connection of flame arrester (19), the upper end of flame arrester (19) is equipped with V type groove (22).
4. The apparatus of claim 1, wherein the apparatus further comprises: epoxy (11) are filled between the FID detector main body (2) and the signal acquisition module (12), and the epoxy (11) wraps the whole of the signal acquisition module (12) and one end of the signal acquisition outgoing line (7).
5. The apparatus of claim 1, wherein the apparatus further comprises: one side of the lower end of the signal collector (13) is provided with a spray pipe (14), one end of the spray pipe (14) extends to the outside of the FID detector main body (2), and the spray pipe (14) conveys hydrogen, air and mixed gas of gas to be detected towards the inside of the detection cavity.
6. The apparatus of claim 1, wherein the apparatus further comprises: the input end of the electromagnetic valve (21) is connected to an external explosion-proof manual operator through Bluetooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210748830.7A CN115128153A (en) | 2022-06-29 | 2022-06-29 | Device for improving accuracy of portable VOCs detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210748830.7A CN115128153A (en) | 2022-06-29 | 2022-06-29 | Device for improving accuracy of portable VOCs detector |
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| Publication Number | Publication Date |
|---|---|
| CN115128153A true CN115128153A (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210748830.7A Pending CN115128153A (en) | 2022-06-29 | 2022-06-29 | Device for improving accuracy of portable VOCs detector |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006250764A (en) * | 2005-03-11 | 2006-09-21 | Riken Keiki Co Ltd | Probe device for sampling gas and portable hydrogen flame ionization type gas detector |
| CN107389780A (en) * | 2017-08-25 | 2017-11-24 | 西安思坦科技有限公司 | A kind of portable volatile contaminant detector |
| CA2947079A1 (en) * | 2016-11-01 | 2018-05-01 | The University Of British Columbia | Apparatus for volatile organic compound (voc) detection |
| CN110220991A (en) * | 2019-07-01 | 2019-09-10 | 张厚海 | A kind of fuel gas automatic on-line detection device and detection method |
| CN111024849A (en) * | 2019-12-25 | 2020-04-17 | 中国科学院声学研究所 | Method and system for reducing external interference of surface acoustic wave gas chromatograph |
-
2022
- 2022-06-29 CN CN202210748830.7A patent/CN115128153A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006250764A (en) * | 2005-03-11 | 2006-09-21 | Riken Keiki Co Ltd | Probe device for sampling gas and portable hydrogen flame ionization type gas detector |
| CA2947079A1 (en) * | 2016-11-01 | 2018-05-01 | The University Of British Columbia | Apparatus for volatile organic compound (voc) detection |
| CN107389780A (en) * | 2017-08-25 | 2017-11-24 | 西安思坦科技有限公司 | A kind of portable volatile contaminant detector |
| CN110220991A (en) * | 2019-07-01 | 2019-09-10 | 张厚海 | A kind of fuel gas automatic on-line detection device and detection method |
| CN111024849A (en) * | 2019-12-25 | 2020-04-17 | 中国科学院声学研究所 | Method and system for reducing external interference of surface acoustic wave gas chromatograph |
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