CN110187055A - A kind of factory's circle type monitor between different malodor source producers - Google Patents
A kind of factory's circle type monitor between different malodor source producers Download PDFInfo
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- CN110187055A CN110187055A CN201910384588.8A CN201910384588A CN110187055A CN 110187055 A CN110187055 A CN 110187055A CN 201910384588 A CN201910384588 A CN 201910384588A CN 110187055 A CN110187055 A CN 110187055A
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Classifications
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- 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
- G01N33/0006—Calibrating gas analysers
-
- 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
- G01N33/0031—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array
- G01N33/0034—General constructional details of gas analysers, e.g. portable test equipment concerning the detector comprising two or more sensors, e.g. a sensor array comprising neural networks or related mathematical techniques
-
- 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
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
- G01N33/0065—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means using more than one threshold
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- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Combustion & Propulsion (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Mathematical Physics (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to a kind of factory's circle type monitors between different malodor source producers, belong to gas detection equipment technical field, including cabinet, master controller on cabinet is set, sensing chamber and the sampling head being connect with sensing chamber, detection interior is provided with the detection unit connecting with master controller, the first row port of sensing chamber is connected to sampling pump, the controlled end of sampling pump and the control terminal of master controller connect, anerovane is additionally provided with above cabinet, detection interior is provided with constant temperature gas cell, detection unit includes the sensor array being arranged in constant temperature gas cell, warm and humid pressure sensor and the semiconductor transducer being set to inside sampling head, sensor array includes PID gas sensor, electrochemical gas sensor, flowmeter is provided between sensing chamber and sampling pump, it can replace artificial, accurately monitor foul gas Type and intensity realize the accurate positioning of different malodor source producers.
Description
Technical field
The invention belongs to gas detection equipment technical fields, are related to a kind of stench monitor, one kind specifically is for difference
Factory's circle type monitor between malodor source producer.
Background technique
Stench refers to all stimulations olfactory organoleptic, causes people unhappy and the gaseous matter of damage living environment, in recent years, with
Economic fast development, many chemical industry, petrochemical industry, coking, sewage treatment plant, destructor plant, pharmaceutical factory, winery, cement
The projects such as factory build in succession and put into operation, and the odor pollution of institute's association at the same time has become the hot topic of environmental protection complaint.However
Odor pollution is an extremely complex problem, finds a suitable odor pollution control and Treatment process is also highly difficult, but first
The problem of what must first be faced is all odor pollution monitoring and evaluation.
Stench has become environmental hazard problem more outstanding as a kind of pollution for disturbing residents and being detrimental to health.With people
The enhancing of improvement of living standard and environmental consciousness, the odor pollution of some countries complain the ratio for accounting for environment complaint to get over
Come higher.According to incompletely statistics, stench complains the ratio for accounting for environment complaint, 50% or more the U.S., and Australia is up to 91.3%,
It is Japanese tens of thousands of annual.According to People's Daily, national environmental protection report platform is commonly connected to 618856 report within 2017.Wherein,
It relates to atmosphere pollution report at most, accounts for 56.7%；And stench/smell pollution report accounts for and relates to the 30.6% of gaslift report, and is most.This
That is stench/smell pollution report accounts for the 17.35% of environmental protection report number in 2017.
Odorant huge number, about more than 4500 kinds of the foul gas being currently known, the pollution sources for generating stench have industry
Pollution sources, domestic pollution source and body secrete pollutant etc., these pollution sources constantly generate alcohols, the incomplete oxidations such as aldehydes and lipid
Odorant and a large amount of unpleasant foul smell.Therefore, carry out atmosphere stench Quantitative Monitoring, be environmental management, odor treatment with
It is very necessary that evaluation provides detailed accurate data.
The odorant of the industries such as chemical industry, pharmacy, food processing, garbage disposal discharge is few then ten several, up to hundreds of, much
More than the control range of existing national standard GB14554-93, the concentration and olfact of part of foul gas are extremely low, at present China
The national standard method for evaluating comprehensive odor strength is that 3 comparison expressions of GB14675-93 smell a bag method (a kind of artificial function method).This side
Method is smelt and is distinguished dependent on gas dilution and manually, and it is very high to do an experimentation cost, is particularly unsuited for the inspection of low concentration and noxious material
It surveys；And this measuring method due to be related to sampling, transport, save, dilution and news such as smell at all too many levels, so it is operational
It is poor.
" odor concentration " refers to that the foul smell sample of collection in worksite is smelt in the odorless clean air serial dilution of use for laboratory to the person of distinguishing is smelt
Feel the extension rate of threshold value, EU criteria EN17325-2003 OU (odor unit) value metric.Currently, the mark of odor concentration
Quasi- discrimination method is mainly by the nose for smelling the person of distinguishing！The countries and regions such as China, America and Europe, Japan and Korea S are such.Implement 25 years
National standard GB/T14675-93 " surrounding air-stench measurement-triangle odor bag method ", which has been standardized, smells the person's of distinguishing choice, effluvium
The acquisition of body sample and Sample intraocular, which dilute and smell, distinguishes three links such as measurement.The national dynamic such as America and Europe, Australia, New Zealand
Olfactometer dilutes foul smell sample.
3 comparison expressions smell a problem of bag method encounters in practical applications:
Completed in standard laboratory due to being, and sample be artificial distribution and it is artificial determine, so subjective factor shadow
Sound is larger；The flowchart process design equipment facility entirely detected is more, therefore the place for introducing error is also more；Same sample exists
Different experiments room is same smell the done result of the person of distinguishing all can be different, the same sample it is different to smell the person's of distinguishing measured result also different
Sample, there are biggish errors for result；Since sample is all the smelly source body acquired in air, therefore wherein have containing largely toxic
Evil gas is often smelt and distinguishes and can damage to the respiratory tract and organ of smelling the person of distinguishing, or even is in peril of one's life；Entire sample detection mistake
Journey is comparatively laborious, the period is long；Since the source bulk concentration that stink much occurs is very low, and odor source has mobility, conventional
Sampling apparatus do not collect primary sample truly.This method can only be suitable for environmentally friendly professional law enfrocement official and take out
Sample detection, and the real-time inspection and control of the odor pollution of certain key areas or unit is difficult to operate.At present for spy
Determine the evil discharged in each unit in region
Odour does not have particularly effective monitoring and analysis means, does not know stench intensity and to pollution caused by ambient enviroment yet
Degree." selecting the full subjective judgement after smelling the person's of distinguishing smelling wrong to choosing ".Although GB/T14675 has been implemented 25 years, status is, perhaps
More odorants or the olfact difference provided without olfact or country variant or tissue are very big.2015, Tianjin ring
From the expectation for having more statistical significance, 30, tissue is smelt to be distinguished national environmental protection odor pollution control key lab, institute, section
Member (male 13 people, 17 people of female) has carried out odor threshold measurement to 40 kinds of odorants, and table 1 is smelt for wherein 10 kinds of odorants distinguishes knot
Fruit is compared with Japan smells and distinguishes value.According to table 1, NH3 odor threshold differs 5 times with Japan, and nearly 3 times of H2S difference, trimethylamine differs
28.12 times, positive valeric acid differs 65.67 times, etc..The above results at least illustrate two problems: (1) determining that smelling for odor concentration is distinguished
Process is very complicated, smells and comments a cost very big；(2) odorant odor threshold that various countries' constituent parts provide itself is not objective, no
Has repeatability.
The odor threshold measurement result (V/V, ppm) [4] of table 1, China and Japan to several representative malodor substances
When odor pollution accident occurs, it is not easy to which analysis is traced to the source, and can not trace and confirm pollutant discharging unit.Need a kind of real-time online
Effective monitoring means, can intuitively react odor pollution situation and timely and effectively trace and trace to the source.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of factory's circle type monitor between different malodor source producers,
It can replace manually, accurately monitoring the type and intensity of foul gas, realizing the accurate positioning of different malodor source producers.
The technical solution adopted by the present invention is that:
A kind of factory's circle monitor between different malodor source producers, including cabinet, the master controller being arranged on cabinet, inspection
Survey room and the sampling head that connect with sensing chamber, detection is indoor to be provided with the detection unit connecting with master controller, and the of sensing chamber
One exhaust outlet is connected to sampling pump, and the controlled end of sampling pump and the control terminal of master controller connect, it is critical that the cabinet
Top is additionally provided with anerovane, and the detection interior is provided with constant temperature gas cell, and the detection unit includes setting
Sensor array in constant temperature gas cell, warm and humid pressure sensor and the semiconductor transducer being set to inside sampling head, sensing
Device array includes PID gas sensor, electrochemical gas sensor, and flowmeter is provided between sensing chamber and sampling pump, sampling
Air circuit breaker is provided between head and sensing chamber.
The constant temperature gas cell includes that gas cell ontology, lower section are provided with and are installed on sensing chamber bottom, thereon by fixinig plate
Isolation mount with semiconductor chilling plate, isolation mount lower section are provided with cooling fin and radiation air outside sensing chamber
Fan.
The thief hatch of the sampling head is provided with mosquito proof strainer.
The cabinet two sides are respectively arranged with the heat exchange mouth below sensing chamber, the hot-swappable fans on the inside of heat exchange mouth.
The monitor further includes sampling pretreatment system, and sampling pretreatment system includes being arranged in sampling head and air circuit breaker
Between under test gas filter.
The monitor further includes zero gas pretreating system, zero gas pretreating system include be sequentially connected along airintake direction, position
Zero pneumoelectric magnet valve and active carbon filter below sensing chamber, the outlet of active carbon filter is by air circuit breaker and sensing chamber
Inside connection.
Alarm, sampling pump are additionally provided on the cabinet, the import of sampling pump is connected to the second exhaust port of sensing chamber, adopts
Sample pump outlet be connected to by valve island with sampler bag, the controlled end of alarm, sampling pump and valve island with the control of master controller
End connection.
Wireless communication module is provided in the cabinet, master controller is by wireless communication module and remote control center signal
Connection.
Standard gas calibration system is additionally provided on the cabinet, the standard gas calibration system includes by air circuit breaker and detection
The standard gas bottle of room connection.
The beneficial effects of the present invention are: sampling sensor constant temperature and temperature and humidity correction technique, removal temperature and humidity interference, mating wind direction
Meteorology five parameters (wind direction, wind speed, temperature, humidity, air pressure) information such as wind speed, suitable for low-temperature region and the factory of mains-supplied
Battery limit (BL) domain, the combined combined type multisensor array of instrument selection PID+ electrochemistry+semiconductor transducer, so both can be right
8 kinds of gases in effectively monitoring national standard, can also (special gas refers to other effluviums with covering part specific characteristic gas
Body, such as chlorine, hydrogen chloride etc. not in 8 kinds of gas lists of national requirements, but also foul smelling smell or toxic have
Harmful).Sampling uses two-stage filtration system, anticorrosion, dust-proof, dehumidifying, and sample lines INSULATION DESIGN prevents gas absorption；Instrument
Device is configured with two kinds of calibrating modes: calibration is calibrated and transmitted automatically to standard gas, for there is the scene of standard gas, can star automatic calibration
Function, can periodically periodically by standard gas scene automatic zero adjustment school across；Transmitting calibrating mode also can be used simultaneously to carry out remotely
School；Device configuration over-standard sample retention system, after exceeded alarm, automatic collection gas is saved, and is used so that subsequent law enforcement detects.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Fig. 2 is the structural schematic diagram of box house.
Fig. 3 is the perspective view of the explosion of connection relationship between constant temperature gas cell and sensor array.
Fig. 4 is the principle of the present invention frame diagram.
In attached drawing, 1, cabinet, 2, sensing chamber, 3, sampling head, 4, sampling pump, 5, anerovane, 6, warm and humid pressure sensor, 7, half
Conductor sensor, 8, constant temperature gas cell, 9, PID gas sensor, 10, electrochemical gas sensor, 11, flowmeter, 12, isolation
Bracket, 13, fixinig plate, 14, cooling fin, 15, radiator fan, 16, semiconductor chilling plate, 17, heat exchange mouth, 18, hot-swappable fans,
19, under test gas filter, 20, air circuit breaker, 22, zero pneumoelectric magnet valve, 23, active carbon filter, 24, gas cell ontology, 25,
Alarm, 26, sampling pump, 27, sampler bag, 29, standard gas bottle, 30, touch screen, 31, power supply, 32, power outlet, 33, relay
Device.
Specific embodiment
The present invention relates to a kind of factory's circle monitors between different malodor source producers, including cabinet 1, setting are on cabinet 1
Master controller, sensing chamber 2 and the sampling head 3 being connect with sensing chamber 2, be provided with the inspection connecting with master controller in sensing chamber 2
Unit is surveyed, the first row port of sensing chamber 2 is connected to sampling pump 4, and the controlled end of sampling pump 4 and the control terminal of master controller connect
It connects, it is important to, it is additionally provided with anerovane 5 above the cabinet 1, is provided with constant temperature gas cell in the sensing chamber 2
8, the detection unit includes the sensor array being arranged in constant temperature gas cell 8, the temperature and humidity pressure that is set to inside sampling head 3
Sensor 6 and semiconductor transducer 7, sensor array include PID gas sensor 9, electrochemical gas sensor 10, sensing chamber
It is provided with flowmeter 11 between 2 and sampling pump 4, air circuit breaker 20 is provided between sampling head 3 and sensing chamber 2.
Combined with specific embodiments below and attached drawing the invention will be further described.
Specific embodiment, as shown in Figs 1-4, the constant temperature gas cell 8 include gas cell ontology 24 and lower section be provided with by
The isolation mount 12 that fixinig plate 13 is installed on 2 bottom of sensing chamber, has semiconductor chilling plate 16 thereon, sensor array setting exist
Inside gas cell ontology 24, the cooling fin 14 and radiator fan 15 being provided with below isolation mount 12 outside sensing chamber 2, every
Gas cell ontology 24 is isolated with the space below sensing chamber 2 from bracket 12, prevents 2 lower space of sensing chamber and gas cell ontology
Gas in 24 generates heat exchange, and semiconductor chilling plate 16 can freeze, heat, and one side is generated heat when work, feels cold on one side；It is fixed
Piece 13, cooling fin 14 and radiator fan 15 are used for radiating.Temperature sensor is also equipped on constant temperature gas cell 8, temperature passes
Sensor is in the center of gas cell ontology 24, for the temperature change of gas in real-time monitoring gas cell 8, constant temperature gas cell 8
The semiconductor chilling plate 16 of lower section for adjusting the temperature of constant temperature gas cell 8 at any time, when semiconductor chilling plate 16 works, Yi Gongshang
Lower two sides, when it is positive for controlling supply current direction, wheat flour heat, freezes below thereon；When current direction overturning, upper wheat flour
Cold heating below.By the variation of the temperature in temperature sensor senses constant temperature gas cell 8, master controller is according to pid algorithm, control
The power supply direction of semiconductor chilling plate 16 processed and power, to realize the purpose of 8 constant temperature of constant temperature gas cell.
The thief hatch of the sampling head 3 is provided with mosquito proof strainer, and mosquito proof strainer carries out primary filtration to outside air, mentions
The cleanliness of high air, and then improve the accuracy of detection.
Sampling pump 4 is diaphragm pump, and warm and humid pressure sensor 6 is that Atmosphere And Humidity presses integrative sensor.
1 two sides of cabinet are respectively arranged with the heat exchange mouth 17 positioned at 2 lower section of sensing chamber, the heat exchange positioned at 17 inside of heat exchange mouth
Fan 18 prevents the temperature in cabinet 1 excessively high, influences for exchanging heat to the space for being located at 2 lower section of sensing chamber in cabinet 1
The normal use of each electronic component.It is located at below sensing chamber 2 in cabinet 1 and is additionally provided with power supply 31, power outlet 32 and connection
Relay 33 between power supply 31 and power outlet 32, power outlet 32 are arranged so that all parts in sensing chamber 2 connect
Line is more convenient, and relay 33 can play the role of the entire circuit of protection.
The monitor further includes sampling pretreatment system, and sampling pretreatment system includes that setting is opened in sampling head 3 with gas circuit
The under test gas filter 19 between 20 is closed, the sampled pump 4 of under test gas extracts, entered by sampling head 3, by under test gas mistake
Filter 19, main controller controls air circuit breaker 20 are opened, and enter detection through the filtered under test gas of under test gas filter 19
It in room 2, is detected by sensor array, improves the accuracy of detection.The control of the controlled end and controller of air circuit breaker 20
End connection.
The monitor further includes zero gas pretreating system, zero gas pretreating system include be sequentially connected along airintake direction, position
Zero pneumoelectric magnet valve 22 and active carbon filter 23 in 2 lower section of sensing chamber, the outlet of active carbon filter 23 is by air circuit breaker
20 be connected to inside sensing chamber 2.Opening air circuit breaker 20, zero pneumoelectric magnet valve 22 makes ring using 4 draw ambient air of sampling pump
Border air successively enters in sensing chamber 2 after zero passage pneumoelectric magnet valve 22, active carbon filter 23 and air circuit breaker 20, carries out school
Quasi- zero point uses.
Alarm 25, sampling pump 26, the import of sampling pump 26 and the second exhaust of sensing chamber 2 are additionally provided on the cabinet 1
Mouth connection, the outlet of sampling pump 26 are connected to by valve island with sampler bag 27, and the controlled end of alarm 25, sampling pump 26 and valve island is equal
It is connect with the control terminal of master controller.Alarm 25 is combined aural and visual alarm, if the data detected exceed limit value, master control
Device processed, which issues signal, makes alarm 25 issue alarm signal, while the island Shi Fa automatically switches to corresponding sampler bag 27, and control is adopted
Sample pump 26 is timed work, and a part of exceeded gas that will test in room 2 is sent into sampler bag 27, to realize automatic collection gas
The purpose for saving, using for subsequent law enforcement detection, remaining gas are discharged yet by first row port.
Wireless communication module is provided in the cabinet 1, master controller is believed by wireless communication module and remote control center
Number connection, it can be achieved that the purpose remotely monitored.
Be additionally provided with standard gas calibration system on the cabinet 1, the standard gas calibration system include with by air circuit breaker 20
The standard gas bottle 29 connecting with sensing chamber 2 closes zero pneumoelectric magnet valve 22, opens air circuit breaker 20, standard gas bottle 29, makes Standard Gases
Body enters in sensing chamber 2, carries out regular timing standard gas calibration, improves the detection accuracy of sensor array.
The electromagnetism valve island that air circuit breaker is made of 2 two-bit triplet solenoid valves (solenoid valve A and solenoid valve B), wherein solenoid valve A
Two input terminals connect respectively with sampling head 3, standard gas bottle 29, two input terminals of solenoid valve B are defeated with solenoid valve A respectively
The outlet connection of active carbon filter 23 in outlet, zero gas pretreating system, output end and the constant temperature in sensing chamber 2 of solenoid valve B
Gas cell 8 penetrates through.
In the use of the present invention, as shown in Figure 1,2 front end face of sensing chamber is provided with the touch screen 30 being electrically connected with master controller, benefit
Simple operations can be carried out with touch screen 30, control the switch state of each solenoid valve；The front end face of cabinet 1 and 30 phase of touch screen
Corresponding position is provided with watch window.The left side of cabinet 1 is arranged in alarm 25, and anerovane 5, sampling head 3 are set respectively
Set the arranged on left and right sides in the upper end of cabinet 1；Flowmeter 11 is located at the front left side in the cabinet 1 of 2 lower section of sensing chamber；Active carbon mistake
Filter 23, sampling pump 4 are respectively positioned on the lower end of cabinet 1, and zero pneumoelectric magnet valve 22 is between active carbon filter 23 and sensing chamber 2；
Under test gas filter 19, air circuit breaker 20 are located at the right side in sensing chamber 2, and under test gas filter 19 is located at gas circuit
The top of switch 20 and sensor array, air circuit breaker 20 is close to the front end of sensing chamber 2；Sensor array includes rectangular array
3 electrochemical gas sensors 10 and a PID gas sensor 9, wherein PID gas sensor 9 is located at rectangular array
Left back, PID gas sensor 9 belong to destructive sensor, and substance can be carried out photo-ionisation by the ultraviolet light of sending, put
It sets in the end of detection array, is to destroy detected gas ingredient in order to avoid it to cause subsequent sensor detection inaccurate.
When work, zero pneumoelectric magnet valve 22 is closed, opens solenoid valve A is connect with sampling head 3 in air circuit breaker 20 input terminal and electricity
The output end of magnet valve A opens the output end of input terminal and solenoid valve B that solenoid valve B is connect with the output end of solenoid valve A, extraneous
Air (under test gas) enters sampling head 3 under the action of sampling pump 4, first passes around setting mosquito proof strainer in sampling head 3, with
Afterwards by semiconductor transducer 7 and warm and humid pressure sensor 6, then successively after under test gas filter 19, air circuit breaker 20, into
The constant temperature gas cell 8 entered in sensing chamber 2 is contacted with PID gas sensor 9, electrochemical gas sensor 10, then by sampling pump 4
It extracts, is discharged outside sensing chamber 2 after the first row port that under test gas is arranged on room 2 after testing through overcurrent meter 11；Semiconductor
Measured data are sent to master controller respectively by sensor 7, PID gas sensor 9 and electrochemical gas sensor 10, when
When the data detected exceed limit value, master controller, which issues signal, makes alarm 25 issue alarm signal, while the island Shi Fa is certainly
Dynamic to switch to corresponding sampler bag 27, control sampling pump 26 is timed work, and a part of exceeded gas in sensing chamber 2 passes through
Second exhaust port and sampling pump 26 enter in sampler bag 27, to realize that automatic collection gas saves, for subsequent law enforcement detection use
Purpose, remaining gas still through first row port be discharged；Anerovane 5 determines the wind direction at any time and wind speed, temperature and humidity pressure
6 measuring temperature of sensor, humidity and air pressure, and master controller is sent the signal to, master controller is according to by above- mentioned information
Integrated treatment, can discharge source to foul gas carry out positioning analysis, and determine odor polluting source from monitoring point away from
From may further determine that the specific location of foul gas while improving gas-monitoring accuracy.
PID gas sensor can detecte ppb rank (hundred a ten thousandths) even organic gas of ppb rank (part per billion)
Body, it is ionized after sucking gas, and the ion that gas molecule is formed forms original gas point after discharge
Son, to raw-gas molecule without destructiveness, and fast response time, service life are long.
Electrochemical gas sensor is that measurement object gas is aoxidized or restored at electrode and surveys electric current, show that object gas is dense
The detector of degree.
Semiconductor transducer refers to sensor made of the various physical, chemical and biological properties using semiconductor material, institute
The semiconductor material majority of use is silicon and III-V race and II-VI group element compound, and advantage is high sensitivity, response speed
Spend it is fast, small in size, light-weight, convenient for integrated, intelligent, detection conversion integration can be made.
Sampling head 3 is to connect by sample lines with sensing chamber 2, and high temperature heat tracing pipe is wound in sample lines, is avoided to be measured
Substance in gas is adsorbed on the precision of interference measurement in sample lines, and under test gas can be heated to 120 by high temperature heat tracing pipe
℃。
PID gas sensor, electrochemical gas sensor and semiconductor transducer are combined the biography to form combined type by the present invention
Sensor array is added anerovane, both can effectively be monitored in national standard GB14554-93 " emission standard for odor pollutants "
Eight kinds of defined ammonia, hydrogen sulfide, trimethylamine, methyl mercaptan, methyl sulfide, methyl disulfide, carbon disulfide and styrene gases, simultaneously
The other gases, such as chlorine, hydrogen chloride etc. other than above-mentioned eight kinds of gas can also be covered.Can also by extension sensor,
Detect other foul smelling smells or poisonous and hazardous gas.Moreover, the monitor passes through the meteorology that measures to anerovane
Information data and the information of sensor array measurement carry out integrated treatment, discharge source that can further to foul gas
Positioning analysis is carried out, and determines odor polluting source with a distance from monitoring point, while improving gas-monitoring accuracy, Ke Yijin
One step determines the specific location of foul gas.
Claims (9)
1. a kind of factory's circle monitor between different malodor source producers, including cabinet (1), the master being arranged on cabinet (1)
Controller, sensing chamber (2) and the sampling head (3) connecting with sensing chamber (2), interior be provided with of sensing chamber (2) connect with master controller
Detection unit, the first row port of sensing chamber (2) is connected to sampling pump (4), the controlled end of sampling pump (4) and master controller
Control terminal connection, it is characterised in that: be additionally provided with anerovane (5) above the cabinet (1), the sensing chamber (2)
It is inside provided with constant temperature gas cell (8), the detection unit includes the sensor array being arranged in constant temperature gas cell (8), sets
It is placed in sampling head (3) internal warm and humid pressure sensor (6) and semiconductor transducer (7), sensor array includes PID gas sensing
Device (9), electrochemical gas sensor (10), are provided with flowmeter (11) between sensing chamber (2) and sampling pump (4), sampling head (3)
Air circuit breaker (20) are provided between sensing chamber (2).
2. a kind of factory's circle monitor between different malodor source producers according to claim 1, it is characterised in that: institute
The constant temperature gas cell (8) stated includes that gas cell ontology (24), lower section are provided with and are installed on sensing chamber (2) bottom by fixinig plate (13)
Portion, the isolation mount (12) for having semiconductor chilling plate (16) thereon, isolation mount (12) lower section are provided with positioned at sensing chamber (2)
External cooling fin (14) and radiator fan (15).
3. a kind of factory's circle monitor between different malodor source producers according to claim 1, it is characterised in that: institute
The thief hatch for the sampling head (3) stated is provided with mosquito proof strainer.
4. a kind of factory's circle monitor between different malodor source producers according to claim 1, it is characterised in that: institute
Cabinet (1) two sides stated are respectively arranged with the heat exchange mouth (17) below sensing chamber (2), are located at changing on the inside of heat exchange mouth (17)
Hot-air fan (18).
5. a kind of factory's circle monitor between different malodor source producers according to claim 1, it is characterised in that: institute
The monitor stated further includes sampling pretreatment system, and sampling pretreatment system includes being arranged in sampling head (3) and air circuit breaker
(20) the under test gas filter (19) between.
6. a kind of factory's circle monitor between different malodor source producers according to claim 1, it is characterised in that: institute
The monitor stated further includes zero gas pretreating system, and zero gas pretreating system includes being sequentially connected along airintake direction, being located at detection
Zero pneumoelectric magnet valve (22) and active carbon filter (23), the outlet of active carbon filter (23) below room (2) are opened by gas circuit
It closes and is connected to inside (20) and sensing chamber (2).
7. a kind of factory's circle monitor between different malodor source producers according to claim 1, it is characterised in that: institute
It is additionally provided with alarm (25), sampling pump (26) on the cabinet (1) stated, the second of the import of sampling pump (26) and sensing chamber (2)
Exhaust outlet connection, the outlet of sampling pump (26) are connected to by valve island with sampler bag (27), alarm (25), sampling pump (26) and valve
The controlled end on island is connect with the control terminal of master controller.
8. a kind of factory's circle monitor between different malodor source producers according to claim 1, it is characterised in that: institute
Wireless communication module is provided in the cabinet (1) stated, master controller connects by wireless communication module and remote control center signal
It connects.
9. a kind of factory's circle monitor between different malodor source producers according to claim 1, it is characterised in that: institute
Standard gas calibration system is additionally provided on the cabinet (1) stated, the standard gas calibration system includes by air circuit breaker (20) and inspection
Survey the standard gas bottle (29) of room (2) connection.
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| CN201910384588.8A CN110187055A (en) | 2019-05-09 | 2019-05-09 | A kind of factory's circle type monitor between different malodor source producers |
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| CN201910384588.8A CN110187055A (en) | 2019-05-09 | 2019-05-09 | A kind of factory's circle type monitor between different malodor source producers |
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| CN201910384588.8A Pending CN110187055A (en) | 2019-05-09 | 2019-05-09 | A kind of factory's circle type monitor between different malodor source producers |
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