CN106841524B - A kind of intelligence toxic gas detector experimental rig and method - Google Patents
A kind of intelligence toxic gas detector experimental rig and method Download PDFInfo
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- CN106841524B CN106841524B CN201710042489.2A CN201710042489A CN106841524B CN 106841524 B CN106841524 B CN 106841524B CN 201710042489 A CN201710042489 A CN 201710042489A CN 106841524 B CN106841524 B CN 106841524B
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- 239000002341 toxic gas Substances 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 139
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 41
- 230000003647 oxidation Effects 0.000 claims abstract description 32
- 230000008569 process Effects 0.000 claims abstract description 22
- 238000009826 distribution Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 18
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- 239000000741 silica gel Substances 0.000 claims description 14
- 229910002027 silica gel Inorganic materials 0.000 claims description 14
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 12
- 239000007800 oxidant agent Substances 0.000 claims description 11
- 230000001590 oxidative effect Effects 0.000 claims description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 8
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 208000002925 dental caries Diseases 0.000 claims description 6
- 210000004907 gland Anatomy 0.000 claims description 6
- 210000002445 nipple Anatomy 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000012790 confirmation Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- DQMUQFUTDWISTM-UHFFFAOYSA-N O.[O-2].[Fe+2].[Fe+2].[O-2] Chemical compound O.[O-2].[Fe+2].[Fe+2].[O-2] DQMUQFUTDWISTM-UHFFFAOYSA-N 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 231100000614 poison Toxicity 0.000 claims description 2
- 230000007096 poisonous effect Effects 0.000 claims description 2
- 229920002379 silicone rubber Polymers 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- 239000008246 gaseous mixture Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 102000001554 Hemoglobins Human genes 0.000 description 1
- 108010054147 Hemoglobins Proteins 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 239000002196 Pyroceram Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/004—CO or CO2
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Abstract
The invention discloses a kind of intelligent toxic gas detector experimental rig and methods, it solves the problems, such as toxic gas detector Experimental Calibration, has the effect of being fully able to meet general industry place to the calibration process of toxic gas detector, its technical solution are as follows: the first cavity forms marked gas space for being connected with the sensor gas chamber of toxic gas detector；Second cavity is connected by first row stomata with the first cavity, is provided with oxidation reactor in second cavity, for by the first cavity calibration after the completion of exhaust-gas treatment and discharge；It is provided with control module in third cavity, for realizing the control to calibration process；4th cavity is connected by venthole with the first cavity, and toxic gas is injected into the first cavity under control module control in the 4th cavity, realizes the distribution of toxic gas.
Description
Technical field
The present invention relates to toxic gas detection technical fields, test more particularly to a kind of intelligent toxic gas detector
Device and method.
Background technique
Currently, can all generate CO gas in the industrial productions such as petroleum, chemical industry, pharmacy, steel, metallurgy.One oxygen
Change carbon and belong to toxic gas, easily in conjunction with hemoglobin and is allowed to lose oxygen carrying capacity and effect, to the health of worker
With serious threat.Carbon monoxide toxic gas detector can detect the carbonomonoxide concentration in environment in time, and
Concentration, which reaches, threatens human health alarm, and worker is made quickly to withdraw scene, ensures life and health safety.
The widest toxic gas detector of industrial application is to detect CO gas using electrochemical principle at present
Concentration.Electrochemical sensor needs periodic calibrating due to self character to guarantee detection accuracy.Existing scaling method mainly has
Two kinds, there are certain deficiencies on Experimental Calibration:
First is that returning to genuine, under delivery test environment, by demarcating module and upper computer software, realize online to sensing
The parameter calibration of device.This calibration mode period is long, at high cost, and the experimental enviroment of genuine calibration and industrial application environment are not
Together, there are errors.
Second is that scene carries calibrating gas, zero point and characteristic point are realized by calibration mask and pressure reducing valve, flowmeter control
Calibration process, calibration mask are equipped with overflow port to empty air in cover, make to reach calibration concentration around probe.This method is to every
Detector carries out calibration and requires to continue conveying gas, and excessive carbon monoxide toxic gas is discharged into air with overflow port
In, it causes also to waste calibrating gas while environmental pollution.
The particularity of the problem of all being existed based on both the above calibration mode and toxic gas, most of factories are being pacified
After filling detector, seldom maintenance even does not go to demarcate, and causes measurement inaccuracy caused by not demarcating for a long time, and initiation is failed to report, accidentally
The problems such as report.
In conclusion in the prior art for the problem of calibrating of toxic gas detector parameter, still shortage effective solution
Scheme.
Summary of the invention
For toxic gas detector in the deficiencies in the prior art, the present invention provides a kind of intelligent poisonous gas detections
Device experimental rig, comprising: inside is divided into the sealing shell of four independent sealed cavitys, and four independent sealed cavitys are respectively
First cavity, the second cavity, third cavity, the 4th cavity；
First cavity is connected with the sensor gas chamber of toxic gas detector, forms marked gas space；
Second cavity is connected by first row stomata with the first cavity, and it is anti-that oxidation is provided in second cavity
Answer device, for by the first cavity calibration after the completion of exhaust-gas treatment and discharge；
It is provided with control module in the third cavity, for realizing the control to calibration process；
4th cavity is connected by venthole with the first cavity, in the 4th cavity under control module control
Toxic gas is injected into the first cavity, realizes the distribution of toxic gas.
Its effect having: the present invention provides a kind of intelligentized toxic gas detector experimental rig, the side of being capable of providing
Just, accurate proving operation, can also be used as the experimental rig of production and scientific research field.The present invention will demarcate required various materials
Material, interface, equipment part etc. are integrated in a seal case, intelligent concentration proportioning and control mode are added, so that once
The calibration process of the achievable more detectors of distribution；It joined calibrated exhaust-gas treatment and discharge function simultaneously, will demarcate
CO gas after is discharged into air again after being oxidized to carbon dioxide, avoids polluting the environment.
Further, the present invention also uses following technical scheme:
First cavity top end is equipped with venthole, and venthole is equipped with rotation process handle and is used to open/close ventilation
Hole, the venthole outside are equipped with elastic silica gel seal closure, are sealed for the sensor gas chamber with carbon monoxide detector
Connection forms marked gas space so that sensor gas chamber is connected with the first cavity.
Its effect having:
By being equipped with venthole in the first cavity top end, it is easy to implement and is connected with the sensor gas chamber of carbon monoxide detector
Logical, Experimental Calibration is convenient.
Further, the present invention also uses following technical scheme:
The elastic silica gel seal closure is that a kind of diameter is small, the silicone elastomer hose for the big two-way opening that stretches, one end
It is tightly fixed on the inside of sealing shell locating for venthole, the other end is by being wrapped in the sensing of detector for telescopic be open
On device gas chamber, so that sensor gas chamber is in the first inside cavity.
Its effect having:
It can be realized the sealing to the sensor gas chamber of carbon monoxide detector by above-mentioned elastic silica gel seal closure to be connected,
Avoid the leakage of toxic gas.
Further, the present invention also uses following technical scheme:
First inside cavity is additionally provided with explosion-proof fan, is mounted on the first cavity upper left corner, the first cavity of face,
First row stomata direction between two cavitys, the explosion-proof fan, which powers to explosion-proof fan by control module and controls fan, to be turned
Speed.
Its effect having: it is realized by above-mentioned explosion-proof fan and toxic gas tail gas is discharged into the by first row stomata
Two inside cavities carry out vent gas treatment.
Further, the present invention also uses following technical scheme:
Oxidation reactor is a cuboid pipeline in second cavity, and front end is connected to the second cavity and the first cavity
Between gas vent, for the CO gas after the completion of calibration is oxidized to carbon dioxide gas, and pass through tail end the
Two gas vents are discharged into atmospheric environment.
Its effect having: above-mentioned oxidation reactor realizes the connection with the first cavity, and gas carries out to treated
Discharge, realizes the processing of tail gas.
Further, the present invention also uses following technical scheme:
The drawer that can be extracted out is equipped in the middle part of the oxidation reactor, drawer is fine-structure mesh oblong-shaped, and oxidant, which is divided, to be taken out
On drawer, drawer door is equipped with high-temperature resistant seal ring, and corresponding second shell cavity position is equipped with first-hand among oxidation reactor
The tail portion of movable valve, oxidation reactor is equipped with snorkel, and snorkel is connected to the second row stomata of the second cavity, second row stomata
The on-off of snorkel is controlled equipped with the second manually-operated gate, the bottom outside of oxidation reactor is equipped with heating tube.
Its effect having:
Drawer is made into fine-structure mesh oblong-shaped, is easy to implement in oxidation reactor and carbon monoxide is comprehensive contacts, drawer
Door is equipped with high-temperature resistant seal ring, corresponding among oxidation reactor for that can realize leakproofness when pushing back oxidation reactor
Third shell cavity position is equipped with first manual valve, the drawer of openable first manual valve extraction oxidation reactor, with reality
The replacement of existing oxidant, the bottom outside of oxidation reactor are equipped with heating tube, for realizing an oxidation inside oxidation reactor
Carbon conversion is the heating condition of carbon dioxide.
Further, the present invention also uses following technical scheme:
Di-iron trioxide, i.e. iron oxide red may be selected in the oxidant.
Its effect having:
Iron oxide red is substantially pure iron oxide, is red powder.The material cost is lower, can be used as consumption
Property oxidant use.Also it can choose the common oxidation be easy to get, be low in cost, can react under the high temperature conditions with carbon monoxide
Agent.
Further, the present invention also uses following technical scheme:
The heating tube is the metal tube for being put into spiral lectrothermal alloy wire.
Its effect having: heating tube can heat metal die, and maximum heating temperature can be to 850 degree.Heating tube by
Control module carries out control heating, realizes the temperature condition of oxidation reaction.Temperature is higher, and oxidation reaction is rapider.
Further, the present invention also uses following technical scheme:
4th inside cavity is equipped with high-pressure mini gas cylinder, pressure reducing valve, constant flow control valve, gas-cylinder retaining assembly, gas
The fixed device of bottle be it is dismountable, for fixing high-pressure mini gas cylinder,
Described pressure reducing valve one end is mounted on the gas outlet of high-pressure mini gas cylinder, and the other end of pressure reducing valve passes through gas conduit
It is connect with constant flow control valve, constant flow control valve is connected to the air inlet of the first cavity by gas conduit and pneumatic nipple
On the outside of hole；Air inlet position gas pipeline is equipped with electromagnetic valve, controls the time of on-off by control module to realize control gas
It is input to the volume fraction of the first cavity.
Its effect having: the 4th cavity controls the time of electromagnetic valve on-off by control module to realize control gas
It is input to the volume fraction of the first cavity.
Further, the present invention also uses following technical scheme:
4th cavity, which is additionally provided with, can be manually rotated window.
Its effect having: can be manually rotated window can open the 4th cavity, and operator is allowed to operate high-pressure mini
Gas cylinder and pressure reducing valve.
Further, the present invention also uses following technical scheme:
The control module of the third cavity includes control circuit, control panel and display screen, and entire control module is fixed
In the front end shell of third cavity, proving operation is carried out by control panel, control module passes through cable gland head and first
The heating tube connection of the explosion-proof fan, the 4th cavity electromagnetic valve, the second cavity of cavity；Control module is additionally provided with cable connector,
For external situ industrial power supply.
Its effect having: realizing the control to the electrical module of whole device by above-mentioned control module, completes entire
Calibration process.
Further, the present invention also provides following technical schemes:
A kind of intelligence toxic gas detector test method, comprising the following steps:
The distribution stage: the sensor gas chamber of detector front end to be calibrated is in the first cavity and in Vertical Square
To in gaseous species, gas concentration and the flow velocity to be demarcated of control module selection, the central processing unit of control module can be counted automatically
The time for needing to inject is calculated, control module is then operated and starts to demarcate, open electromagnetic valve, CO gas is injected into first
In cavity, when injection length reaches, control module closes electromagnetic valve, cuts off the air inlet of the first cavity and the 4th cavity,
Control module opens explosion-proof fan, and the revolving speed for controlling explosion-proof fan reaches marked gas flow velocity, so that the first chamber is intracorporal mixed
Close gas uniform circulation；
Calibration phase: when distribution is completed, calibration phase can be carried out, if there are more detectors to need to demarcate, can demarcated
After the completion, rotation process handle is closed, elastic silica gel seal closure is taken off into the sensor that another gas detector is arrived in replacement
On gas chamber, rotation process handle can be opened after confirmation sealing, continues to demarcate；
The exhaust-gas treatment stage: key is completed in the calibration that control module is operated after the completion of calibration phase, first closes selection behaviour
Make handle, remove elastic silica gel seal closure, heating tube, after reaction condition to be achieved, display prompts are opened by control module
The exhaust-gas treatment stage opens first row stomata, and the carbon monoxide exhaust gas after explosion-proof fan will use is discharged into oxidation reactor, with
The progress of oxidation reaction, black powder is gradually become by the red iron oxide red powder of glass shell observation, opens second
Gas vent is by CO2 emission into atmospheric environment.
Compared with prior art, the beneficial effects of the present invention are:
The present invention will demarcate the modules such as the required multiple material of toxic gas detector, interface, equipment part and be integrated in one
One Intelligent calibrating device of composition is played, reduces the tedious steps of the multiple links of marked gas detector, strengthens calibrated
The confined gas of each link of journey, improves work efficiency；Intelligentized distribution mode and control mode are devised, is improved whole
The accuracy and reliability of a calibration process；The caliberating device is also added into calibrated exhaust-gas treatment link simultaneously, so that having
The staking-out work of poison gas bulk detector also can be realized scientific order, environmentally protective.
The present apparatus can also be first without exhaust-gas treatment, by first closing venthole, the other spies of access after the completion of calibration
After the sensor gas chamber of survey device, open the mode of venthole again to realize the staking-out work of more detectors.The present apparatus can be real
More gas detectors are demarcated in an existing distribution, are avoided and are demarcated different detectors every time and require to repeat to configure using calibration gas
Body reduces use cost and disposal of pollutants.
Apparatus of the present invention have integrated, intelligent, at low cost, airtightness, automatic distributing mode, displayable calibration circle
The features such as more detector calibrating functions, is once realized in face, distribution, is fully able to meet general industry place to toxic gas spy
Survey the calibration process of device.Apparatus of the present invention can be used for production and scientific research uses, to realize generally testing for toxic gas
Journey, safety non-pollution have preferable practical value.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is a kind of structural schematic diagram top view of intelligent toxic gas detector in-situ calibration device of the present invention；
In figure, the 1, first cavity；2, the second cavity；3, third cavity；4, the 4th cavity；5, first row stomata；6, it aoxidizes
Agent；7, second row stomata；8, the second manually-operated gate；9, heating tube；10, the first cable gland head；11, control module；12, it controls
Circuit；13, cable；14, display screen；15, the second cable gland head；16, high-pressure mini gas cylinder；17, pressure reducing valve；18, air inlet；
19, electromagnetic valve；20, constant flow control valve；21, explosion-proof fan；22, sealing shell；23, elastic silica gel seal closure；24, it rotates
Operation handle；25, first manual valve；26, drawer；27, venthole；28, pneumatic nipple；29, battery；30, gas cylinder is solid
Determine device；31, it can be manually rotated window；32, oxidation reactor；33, gas conduit.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, the complicated problem of toxic gas detector calibration exists in the prior art, in order to
Technical problem as above is solved, present applicant proposes a kind of intelligent toxic gas detector experimental rig and methods.
In a kind of typical embodiment of the application, as shown in Figure 1, providing a kind of intelligent toxic gas detector
Experimental rig, apparatus of the present invention include sealing shell 22, and the space that sealing shell 22 is formed is divided into four independent sealed skies
Between, the first cavity 1, the second cavity 2, third cavity 3, the 4th cavity 4:
Sealing shell is combined with metal framework by pyroceram and is made, and the 4th cavity is on the left of sealing shell, and first
Cavity and the second cavity are respectively at latter half on the right side of sealing shell, and the first cavity is located at first half, the first cavity, second
Cavity, third cavity and the 4th cavity sealing isolated from one another.
Air inlet is equipped between the first cavity lower left corner and the 4th cavity, the gas of high-pressure mini gas cylinder passes through the air inlet
Space is demarcated into the first of sealing, which is equipped with electromagnetic valve, controls its on-off by control module；First cavity with
Second cavity is connected by the first row stomata 5 that the upper right corner is arranged, which is equipped with rotation process handle and is used to beat
Opening/closing first row stomata 5.
First cavity 1 is Demarcate Gas space, case is matched as gas concentration, by air inlet 18, venthole 27 and first
The composition such as gas vent 5, explosion-proof fan 21.Wherein air inlet 18 is located between the first cavity 1 and the 4th cavity 4, ventilation pipe
Equipped with electromagnetic valve 19, it is externally provided with pneumatic nipple 28 in shell wall and increases airtightness.High-pressure mini gas cylinder 16 is solid by gas cylinder
Determine device 30 and be fixed on the 4th inside cavity, pressure reducing valve 17 is installed on high-pressure mini gas cylinder 16, pressure reducing valve 17 is led by gas
Pipe 33 connects constant flow control valve 20, and constant flow control valve 20 is connected to pneumatic nipple 28 by gas conduit.
Venthole 27 is equipped with rotation process handle 24 in the inside of the first cavity 1, can be opened by rotation process handle 24
Or close venthole 27.Telescopic elastic silica gel seal closure 23 is equipped on the outside of venthole 27, it can be by an oxidation to be calibrated
Sensor gas chamber is wrapped in inside the first cavity 1 on carbon detector.
First row stomata 5 also is provided with rotation process handle to realize and opens or closes first in the upper right side of the first cavity 1
Gas vent.The left upper end of first cavity 1 corresponding with first row stomata 5 is equipped with explosion-proof fan 21 and is used to realize that marked gas exists
First cavity, 1 internal circulation flow, gas flow direction at detector sensor gas chamber with sensor method to vertical, be conducive to pass
The accurate calibration of sensor.When demarcating completion, explosion-proof fan 21 is used to be vented.
Second cavity 2 is equipped with oxidation reactor 32, and oxidation reactor 32 is the long cylinder of cuboid, left end and first exhaust
Hole 5 is tightly connected, and right end and second row stomata 7 are tightly connected.Second row stomata 7 is equipped with the second manually-operated gate 8 to control ventilation
The on-off of pipe, the bottom outside of oxidation reactor 32 are equipped with heating tube, and the intermediate position of oxidation reactor 32 is equipped with rectangular
Drawer 26, oxidant 6, which is laid on drawer 26, forms biggish response area.Sealing shell 22 is equipped with first near drawer 26
Manually-operated gate 25 can open first manual valve 25, drawer 26 be extracted out to realize replacement oxidant 6.Oxidation reactor 32
Bottom is equipped with heating tube 9, for providing the temperature condition of oxidation reaction.
Control module 11 and battery 29 are equipped with inside third cavity 3.Control module 11 is by control circuit 12 and display screen 14
Composition is connected between control circuit 12 and display screen 14 by cable 13, and control circuit 12 is equipped with control panel outside shell,
The input operation to device may be implemented.Battery 29 is connected to control module 11 and provides power supply for electric appliance connection in device.Control
It is powered on the heater 9 that molding block 11 is connected in third cavity 3 by the first cable gland head 10.Control module 11 is logical
The explosion-proof fan 21 that the second cable gland head 15 is connected in the first cavity 1 is crossed to be powered.Second cavity 2 is additionally provided with external electricity
Source interface.
Display screen 14 is a kind of small-sized liquid crystal display, is capable of the work shape of display control panel operational order and each functional module
State can also show the parameter informations such as current marked gas type, concentration.
Battery is in the second cavity, is a kind of chargeable 24V lithium battery, is connect with control module and is each electrical mould
Block power supply.The device can both be worked by live external power supply, can also be worked with from charged pool.Control module is additionally provided with electricity
Cable joint is used to external situ industrial power supply.
At work, user can select the concentration of marked gas, control module meeting to apparatus of the present invention by control panel
The carbon monoxide volume injected needed for automatically analyzing, calculates the make-and-break time of constant flow control valve, has intelligentized calibrated
Journey,
4th cavity is in the left side of whole device, inside be equipped with high-pressure mini gas cylinder, pressure reducing valve, constant flow control valve,
Gas-cylinder retaining assembly can be manually rotated window.Gas-cylinder retaining assembly is removably, for fixing high-pressure mini gas cylinder.Rotation manually
The 4th cavity can be opened by turning window, and operator is allowed to operate high-pressure mini gas cylinder and pressure reducing valve.
Constant flow control valve is a kind of self-balancing valve and a kind of constant flow control device of simplicity, be may be implemented
Pass through fixed gas flow in unit time.
Gas conduit is a kind of polyfluortetraethylene pipe (PTFE), is commonly called as Te Fulong tracheae.
Explosion-proof fan is mounted on the first cavity upper right corner, the first row stomata side between the first cavity of face, the second cavity
To.The revolving speed of fan is powered by control module and controlled to explosion-proof fan.
High-pressure mini gas cylinder be capacity be 2L Seamless Steel gas cylinder, inside filled with concentration be 1000ppm an oxidation
Carbon, pressure 10MPa.The high pressure gas cylinder is common test gas gas cylinder, and the gas for demarcating concentration can be easily in extraordinary gas
It is bought at body producer.
It is the detailed construction composition of the present apparatus above.Then the proportion of marked gas concentration how is realized under elaboration:
Assuming that the volume of the first cavity 1 is V1, the transmission flow of constant flow control valve is L, carbon monoxide gas needed for demarcating
Bulk concentration is x, then gas passes through the time t of air inlet are as follows:
The flow of gas can realize constant speed transmission by the cooperation of pressure reducing valve and constant flow control valve, therefore we only need
Accurately gas concentration proportion can be realized by wanting the make-and-break time of electromagnetic valve for adjusting door control air inlet.
Field calibration is divided into three phases, distribution stage, calibration phase and exhaust-gas treatment stage.It is the distribution stage first:
The sensor gas chamber of detector front end to be calibrated is wrapped in elastic silica gel seal closure 23, and opens the rotation of venthole 27
Operation handle 24 is in sensor gas chamber in the first cavity 1 and vertically.Open the manual rotation on the 4th cavity 4
Turn window 31, unscrew high-pressure mini gas cylinder 16 and pressure reducing valve 17, and adjust constant flow control valve 20, is wanted in the selection of control module 11
Gaseous species, gas concentration and the flow velocity of calibration, the central processing unit of control module 11 will automatically calculate the time for needing to inject.
Then operation control module 11 starts to demarcate, and opens electromagnetic valve, and CO gas is injected into the first cavity 1, works as injection
When time reaches, control module 11 closes electromagnetic valve, cuts off the air inlet 18 of the first cavity 1 and the 4th cavity 4, closes miniature
High pressure gas cylinder 16.Control module 11 opens explosion-proof fan 21, and the revolving speed for controlling explosion-proof fan 21 reaches marked gas flow velocity, makes
Obtain the mixed gas uniform circulation in the first cavity 1.When screen to be shown shows that distribution is completed, calibration phase can be carried out.
If there are more detectors to need to demarcate, the rotation process handle 24 of venthole 27 can be closed, by elastic silica gel after the completion of calibration
Seal closure 23 takes off replacement to the sensor gas chamber of another gas detector, and rotation behaviour can be opened after confirmation sealing
Make handle 24, continues to demarcate.Key is completed in the calibration that control module 11 is operated after the completion of calibration phase, closes venthole 27
Rotation process handle 24 removes elastic silica gel seal closure 23.Heating tube 9, reaction condition to be achieved are opened by control module 11
Afterwards, the display prompts exhaust-gas treatment stage, first row stomata 5 is opened, the carbon monoxide exhaust gas after explosion-proof fan 21 will use is arranged
Enter in oxidation reactor 32.Carbon monoxide and oxidant in oxidation reactor 32 are performed under heating conditions according to following equation
Oxidation reaction:
According to above-mentioned, the oxidant needed for being calculated according to parameters such as the gas concentrations of calibration must be measured.In oxidation reaction
In the drawer 26 of device 32, we are put into excessive Fe2O3And it is laid in reaction surface, to guarantee that CO is completely oxidized to CO2.With
The progress of oxidation reaction gradually becomes black powder by the red iron oxide red powder of glass shell observation, opens second row
Stomata 7 is by CO2 emission into atmospheric environment.After the completion of whole process, heating tube 9 is closed, after cooling takes out drawer 26
Out, oxidant 6 is replaced, is finally closing device and display screen.
It is a kind of specific embodiment of toxic gas detector in-situ calibration device above.Although above-mentioned in conjunction with attached drawing pair
A specific embodiment of the invention is described, but it is not intended to limit the protection scope of the present invention, one of ordinary skill in the art
It should be understood that those skilled in the art do not need to make the creative labor and can make on the basis of technical solution of the present invention
Various modifications or changes still within the scope of the present invention.
Claims (9)
1. a kind of intelligence toxic gas detector experimental rig, characterized in that include: that inside is divided into four independent sealed cavitys
Sealing shell, four independent sealed cavitys are respectively the first cavity, the second cavity, third cavity, the 4th cavity；
First cavity forms marked gas space for being connected with the sensor gas chamber of toxic gas detector；
Second cavity is connected by first row stomata with the first cavity, is provided with oxidation reaction in second cavity
Device, for by the first cavity calibration after the completion of exhaust-gas treatment and discharge；
It is provided with control module in the third cavity, for realizing the control to calibration process；
4th cavity is connected by air inlet with the first cavity, will be had under control module control in the 4th cavity
Poisonous gas is injected into the first cavity, realizes the distribution of toxic gas；
Oxidation reactor is a cuboid pipeline in second cavity, and front end is connected between the second cavity and the first cavity
First row stomata, for the CO gas after the completion of calibration is oxidized to carbon dioxide gas, and pass through tail end the
Two gas vents are discharged into atmospheric environment.
2. a kind of intelligent toxic gas detector experimental rig as described in claim 1, characterized in that
First cavity top end is equipped with venthole, and venthole is equipped with rotation process handle and is used to open/close venthole, institute
It states and is equipped with elastic silica gel seal closure outside venthole, be connected and sealed for the sensor gas chamber with carbon monoxide detector,
So that sensor gas chamber is connected with the first cavity, marked gas space is formed.
3. a kind of intelligent toxic gas detector experimental rig as claimed in claim 2, characterized in that the elastic silica gel
Seal closure is that a kind of diameter is small, the silicone elastomer hose for the big two-way opening that stretches, and one end is tightly fixed to locating for venthole
Sealing shell on the inside of, the other end by by it is telescopic opening be wrapped on the sensor gas chamber of detector so that sensor
Gas chamber is in the first inside cavity.
4. a kind of intelligent toxic gas detector experimental rig as described in claim 1, characterized in that first cavity
Inside is additionally provided with explosion-proof fan, is mounted on the first cavity upper right corner, the first exhaust between the first cavity of face, the second cavity
Hole direction, the explosion-proof fan power to explosion-proof fan by control module and control the revolving speed of fan.
5. a kind of intelligent toxic gas detector experimental rig as claimed in claim 4, characterized in that the oxidation reaction
The drawer that can be extracted out is equipped in the middle part of device, drawer is fine-structure mesh oblong-shaped, and oxidant is divided on drawer, and drawer door is equipped with high temperature resistant
Sealing ring, corresponding second shell cavity position is equipped with first manual valve, the tail of oxidation reactor among oxidation reactor
Portion is equipped with snorkel, and snorkel is connected to the second row stomata of the second cavity, and second row stomata is equipped with the second manually-operated gate to control
The bottom outside of the on-off of snorkel processed, oxidation reactor is equipped with heating tube.
6. a kind of intelligent toxic gas detector experimental rig as claimed in claim 5, characterized in that the oxidant
Di-iron trioxide, i.e. iron oxide red may be selected；
The heating tube is the metal tube for being put into spiral lectrothermal alloy wire.
7. a kind of intelligent toxic gas detector experimental rig as claimed in claim 5, characterized in that
4th inside cavity is equipped with high-pressure mini gas cylinder, pressure reducing valve, constant flow control valve, gas-cylinder retaining assembly, and gas cylinder is solid
Determine device be it is dismountable, for fixing high-pressure mini gas cylinder,
Described pressure reducing valve one end is mounted on the gas outlet of high-pressure mini gas cylinder, and the other end of pressure reducing valve passes through gas conduit and perseverance
Flow control valve connection, constant flow control valve are connected to outside the air inlet of the first cavity by gas conduit and pneumatic nipple
Side；Air inlet position gas pipeline is equipped with electromagnetic valve, controls the time of on-off by control module to realize control gas input
To the volume fraction of the first cavity.
8. a kind of intelligent toxic gas detector experimental rig as claimed in claim 7, characterized in that
4th cavity, which is additionally provided with, can be manually rotated window；
The control module of the third cavity includes control circuit, control panel and display screen, and entire control module is fixed on
In the front end shell of three cavitys, proving operation is carried out by control panel, control module passes through cable gland head and the first cavity
Explosion-proof fan, the 4th cavity electromagnetic valve, the second cavity heating tube connection；Control module is additionally provided with cable connector, is used to
External situ industrial power supply.
9. using a kind of intelligent toxic gas detector test method of experimental rig described in any one of claim 1-8,
It is characterized in that, comprising the following steps:
The distribution stage: the sensor gas chamber of detector front end to be calibrated is in the first cavity and vertically,
Control module selects gaseous species, gas concentration and the flow velocity to be demarcated, and the central processing unit of control module, which will automatically calculate, to be needed
Then the time to be injected operates control module and starts to demarcate, opens electromagnetic valve, CO gas is injected into the first cavity
Interior, when injection length reaches, control module closes electromagnetic valve, cuts off the air inlet of the first cavity and the 4th cavity, control
Module opens explosion-proof fan, and the revolving speed for controlling explosion-proof fan reaches marked gas flow velocity, so that the intracorporal gaseous mixture of the first chamber
Body uniform circulation；
Calibration phase: when distribution is completed, can carry out calibration phase, if there is more detectors to need to demarcate, can complete in calibration
Afterwards, rotation process handle is closed, elastic silica gel seal closure is taken off into the sensor gas chamber that another gas detector is arrived in replacement
On, rotation process handle can be opened after confirmation sealing, continues to demarcate；
The exhaust-gas treatment stage: key is completed in the calibration that control module is operated after the completion of calibration phase, first closes selection operation hand
Handle removes elastic silica gel seal closure, opens heating tube, after reaction condition to be achieved, display prompts exhaust gas by control module
Processing stage opens first row stomata, and the carbon monoxide exhaust gas after explosion-proof fan will use is discharged into oxidation reactor, with oxygen
The progress for changing reaction gradually becomes black powder by the red iron oxide red powder of glass shell observation, opens second exhaust
Hole is by CO2 emission into atmospheric environment.
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| DE112011100765B4 (en) * | 2011-01-19 | 2013-06-20 | Sichuan Electric Power Research Institute | Calibration device for online sulfur hexafluoride moisture analyzers and associated calibration method |
| CN105572307A (en) * | 2016-01-28 | 2016-05-11 | 河北先河环保科技股份有限公司 | Calibration tool for gas sensors and calibration method |
| CN105987939A (en) * | 2015-02-04 | 2016-10-05 | 深圳德士特智慧科技有限公司 | Multipath formaldehyde collection and intelligent calibration system as well as calibration method thereof |
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| DE112011100765B4 (en) * | 2011-01-19 | 2013-06-20 | Sichuan Electric Power Research Institute | Calibration device for online sulfur hexafluoride moisture analyzers and associated calibration method |
| CN102323380A (en) * | 2011-05-31 | 2012-01-18 | 江苏大学 | Carbon monoxide gas calibrating device and method |
| CN105987939A (en) * | 2015-02-04 | 2016-10-05 | 深圳德士特智慧科技有限公司 | Multipath formaldehyde collection and intelligent calibration system as well as calibration method thereof |
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