CN209656638U - A kind of VOCs on-line detector - Google Patents
A kind of VOCs on-line detector Download PDFInfo
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- CN209656638U CN209656638U CN201920101988.9U CN201920101988U CN209656638U CN 209656638 U CN209656638 U CN 209656638U CN 201920101988 U CN201920101988 U CN 201920101988U CN 209656638 U CN209656638 U CN 209656638U
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Abstract
The utility model provides a kind of VOCs on-line detector, it is affected by environment big for solving VOCs on-line monitoring system testing result in the prior art, maintain isoperibol difficult, the technical problem of long-range control trouble, it include: shell, circuit board, post case, TCD module, fid detector, pressure maintaining valve and sampling valve, wherein: enclosure interior is fixedly installed with post case and TCD module, and back side of shell is provided with air-path interface and power interface；Post case side is provided with circuit board, and the other side is provided with fid detector；Fid detector both sides are respectively arranged with pressure maintaining valve and sampling valve；Implement the technical solution of the utility model, six-way valve, quantity tube and pressure maintaining valve are set, equivalent sample introduction increases the applicable environment of device；Chromatographic column is coated on heated aluminum block, and temperature sensor and insulating layer is arranged, it can be achieved that chromatographic column each section thermally equivalent；Communication interface and wireless module multiple communication modes are set, user's remote monitoring and control detector is convenient for；Incubator is set, detection accuracy is improved.
Description
Technical field
The utility model relates to VOCs detection field, in particular to a kind of VOCs on-line detector.
Background technique
VOCs on-line monitoring system can carry out the volatile organic matter VOCs gas of stationary source, factory circle, garden real
When monitor, unified acquisition, saves data at analysis, reflects disposal of pollutants situation in real time.In the prior art, VOCs monitors report automatically
Alert main function of system has the functions such as flue gas pretreatment, on-line monitoring, data processing, automatic alarm, data network, and detector needs
It is placed in the constant temperature field that constant temperature control circuit is controlled, and sampling area is small, testing result is by environment temperature, sample throughput
Influence.
Therefore, it is necessary to one kind can On-line Control, and can be realized wireless data transmission, chromatographic column is heated evenly, detection
Precision is high, adapts to varying environment, the simple VOCs on-line detector of apparatus structure.
Utility model content
In order to solve the above-mentioned technical problem, a kind of VOCs on-line detector, the utility model are disclosed in the utility model
Technical solution be implemented:
A kind of VOCs on-line detector, comprising: shell, circuit board, post case, TCD module, fid detector, pressure maintaining valve and into
Sample valve, in which: the enclosure interior is fixedly installed with the post case and the TCD module, and the back side of shell is provided with gas circuit
Interface and power interface；The post case side is provided with the circuit board, and the other side is provided with the fid detector；The FID
Detector both sides are respectively arranged with the pressure maintaining valve and the sampling valve；The post case includes post case shell, insulating layer, heating aluminium
Block, chromatographic column, platinum resistance mounting hole and heating rod mounting hole, the chromatographic column are coated on the outer surface of the heated aluminum block, institute
It states insulating layer to be arranged between the post case shell and the heated aluminum block, the platinum resistance mounting hole and heating rod installation
Hole, which is arranged inside the heated aluminum block, is used for grafting platinum resistance and heating rod.
Preferably, the fid detector includes that hydrogen enters pipe, air enters pipe, ignition lead, nozzle, make-up gas capillary column, sample
Product load entrance and collector, and the gas that the chromatographic column comes out loads entrance by the sample and enters.
Preferably, the air-path interface includes driving gas interface, sample gas interface and tail gas interface, and the air-path interface is also
It is provided with six-way valve and quantity tube, the pressure maintaining valve is connected to the fid detector, and the fid detector is connected to the chromatographic column.
Preferably, the fid detector is provided with polarization pole and collector, the polarization pole and the collector are connected to
Amplifier and data logger.
Preferably, the fid detector is mounted in a heat carrier, and the heat carrier is provided with temperature measurement sensing
Device.
Preferably, the shell front is provided with work station touch screen and communication interface, and the communication interface is USB interface
Or TypeC interface.
Preferably, the back side of shell or side are provided with one or more cooling ports, and the cooling port is fan
Or water cooling interface.
Preferably, a kind of VOCs on-line detector, further includes incubator, and the incubator is arranged on the air-path interface
Trip pre-processes the gas for flowing into the air-path interface.
Preferably, the VOCs on-line detector, further includes wireless module.
Implement the technical solution of the utility model can solve in the prior art VOCs on-line monitoring system testing result by ring
Border influences big, maintenance isoperibol difficulty, the technical problem of long-range control trouble；Implement the technical solution of the utility model, leads to
Setting six-way valve and the constant sample tolerance of quantity tube are crossed, pressure maintaining valve controls nebulizer gas pressure, reduces environmental factor to the shadow of testing result
Ring, can equivalent sample introduction, increase the applicable environment of device；Chromatographic column is coated on heated aluminum block, and temperature is arranged in heated aluminum block and passes
Sensor, setting insulating layer in aluminium block outside is, it can be achieved that chromatographic column each section thermally equivalent, the consistent technical effect of temperature；Setting is logical
Communication interface and wireless module multiple communication modes are convenient for user's remote monitoring and control detector；Incubator is set, sample gas is avoided
In vapor condensation, improve detection accuracy, extend the detector gas circuit service life.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is an embodiment of the present invention, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of specific embodiment of the utility model except hydrocarbon instrument structural schematic diagram；
Fig. 2 is a kind of detector front view of specific embodiment of the utility model；
Fig. 3 is a kind of detector rearview of specific embodiment of the utility model；
Fig. 4 is a kind of post case structural schematic diagram of specific embodiment of the utility model；
Fig. 5 is a kind of air inlet gas circuit structure schematic diagram of specific embodiment of the utility model；
Fig. 6 is a kind of fid detector structural schematic diagram of specific embodiment of the utility model；
Fig. 7 is a kind of fid detector signal amplification circuit schematic diagram of specific embodiment of the utility model.
In above-mentioned attached drawing, each figure number label is respectively indicated:
1- shell；2- circuit board；3- post case；4-TCD module；5-FID detector；501- hydrogen enters pipe；502- air enters
Pipe；503- ignition lead；504- nozzle；505- make-up gas capillary column；506- sample loads entrance；507- collector；6- pressure maintaining valve；
7- sampling valve；8- air-path interface；9- power interface；10- insulating layer；11- heated aluminum block；12- chromatographic column；The installation of 13- platinum resistance
Hole；14- heating rod mounting hole；15- six-way valve；16- quantity tube；17- amplifier；18- data logger；19- work station touches
Screen；20- communication interface；21- cools down port；22- screw hole；23- post case shell.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, fall within the protection scope of the utility model.
In a kind of specific embodiment of the utility model, a kind of VOCs on-line detector, as shown in Figure 1, Figure 2, Fig. 3, Fig. 4
With shown in Fig. 5, comprising: shell 1, circuit board 2, post case 3, TCD module 4, fid detector 5, pressure maintaining valve 6 and sampling valve 7, in which:
Post case 3 and TCD module 4 are fixedly installed with inside shell 1,1 back side of shell is provided with air-path interface 8 and power interface 9；Post case 3
Side is provided with circuit board 2, and the other side is provided with fid detector 5；5 both sides of fid detector be respectively arranged with pressure maintaining valve 6 and into
Sample valve 7；Post case 3 includes post case shell 23, insulating layer 10, heated aluminum block 11, chromatographic column 12, platinum resistance mounting hole 13 and heating rod
Mounting hole 14, chromatographic column 12 are coated on the outer surface of heated aluminum block 11, and insulating layer 10 is arranged in post case shell 23 and heated aluminum block
Between 11, platinum resistance mounting hole 13 and heating rod mounting hole 14 are arranged inside heated aluminum block 11 for grafting platinum resistance and heating
Stick.
In detection process, circuit board 2 controls the work and closing of each component of detector.In user's use process, selection is most
Excellent hydrogen and AIR Proportional controls the flow of hydrogen and air, prepares for detection.After 5 steady operation of fid detector, use
Family is passed through sample gas, and sample gas enters post case 3 thereafter, enters fid detector 5 by isolated sample gas, fid detector 5 detects sample
The content of gas component and each component, after the completion of detection, exhaust gas is discharged in detector.When detector is used for new environment, user can make
Preliminary examination is carried out to sample gas with TCD module 4, TCD module 4 requires low, process to testing conditions such as the temperature, humidity, component of sample gas
Simply, convenient for the component overview of user's quick obtaining sample gas, most suitable 5 operating mode of fid detector is selected convenient for user, is mentioned
The accuracy that high fid detector 5 detects.TCD module 4 and fid detector 5 are combined, and the use time of fid detector 5 is effectively reduced
Number improves the service life of fid detector 5, to extend the service life of device entirety, the hydrogen that uses due to fid detector 5
There is the gentle pressure request of higher purity, price is higher, and the access times for reducing fid detector 5 can also reduce the use such as hydrogen
Amount, effectively reduces cost.
In this specific embodiment, the materials such as stainless steel can be used in shell 1, have compared with high structural strength, to inside
Each component can play effective support, can reserving screw hole 22 in shell 1, being fixed in use environment for will test instrument.
The flow of flow type needle valve control hydrogen and air can be used in detector.Nitrogen, helium, argon gas etc. can be used in driving gas
Gas is selected in conjunction with sample gas type and cost efficiency.Pressure maintaining valve 6 is arranged in detector, is precisely controlled driving convenient for detector
Tolerance reduces influence of the variation of driving tolerance to 5 testing result of fid detector, improves detector test precision.In post case 3,
Post case shell 23 wraps up internal structure, and heated aluminum block 11 can be set in 3 middle part of post case, fill out between heated aluminum block 11 and shell 1
Insulating layer 10 is filled, the materials such as ceramics, phenol formaldehyde foam, polyurethane can be used in insulating layer 10, and one layer of aluminium can be set on the inside of shell 1
Foil further increases 10 heat insulation effect of insulating layer as heat-reflecting layer.Insulating layer 10 can make heat concentrate on heated aluminum block 11
Near, heating efficiency is improved, while reducing to distribute and avoiding the overheat of post case 3 to the TCD mould near post case 3 to the heat outside post case 3
The equipment such as block 4, circuit board 2, fid detector 5 impact, and improve the reliability of device.Heating rod is set to heated aluminum block 11
In, the non-dismountable modes such as splicing can be used in heating rod and heated aluminum block 11, and to reinforce stability, it is solid that screw also can be used
The removablies such as determine, connect and fix, selecting different heating rods according to heating amount demand convenient for user, and can heat
It repairs or replaces when stick damages, extend device lifetime.Chromatographic column 12 can wind on heated aluminum block 11, and the heat of heating rod is logical
It crosses aluminium block to be transferred uniformly into chromatographic column 12, makes 12 each sections of chromatographic column can be stably maintained at same temperature, avoid chromatography
Column 12 temperature distribution is non-uniform cause column effect reduce.3 structure of post case is simple, reduces installation cost.User can pass through platinum resistance
It monitors the temperature of heated aluminum block 11 in real time, conducive to 11 temperature of heated aluminum block is precisely controlled, optimizes chromatographic isolation effect and control sample
Temperature degree meets 5 testing conditions of fid detector, improves the detection accuracy of fid detector 5.After being loaded into sample gas, heated aluminum block 11
Temperature has certain variation, and control system can analyze 11 temperature change of heated aluminum block caused by sample gas, optimizes heated aluminum block 11
The selection of heating power.
In a preferred embodiment, as shown in Fig. 1, Fig. 4, Fig. 5 and Fig. 6, fid detector 5 includes that hydrogen enters pipe
501, air enters pipe 502, ignition lead 503, nozzle 504, make-up gas capillary column 505, sample load entrance 506 and collector 507,
The gas flowed out in chromatographic column 12 loads entrance 506 by sample and enters.Hydrogen, which enters pipe 501 and enters pipe 502 with air, connects the external world
Gas source, gas source are arranged in outside detector, greatly reduce the volume of detector itself, increase the compatible environment of detector.It uses
Capillary chromatographic column 12, good separating effect are conducive to accurately measure the low content component in sample gas.Due to capillary chromatographic column 12
Detection spatial volume afterwards is much larger than 12 internal volume of chromatographic column, and sample air-flow may be detained after going out chromatographic column 12, and tail is arranged
Blowing device can make the sample gas flowed out in chromatographic column 12 enter nozzle 504 in real time, therefore can be with using make-up gas capillary column 505
Improve detector test precision.Ignition lead 503 can be connected directly with circuit board 2, complete to light a fire by circuit board 2.
In a preferred embodiment, as shown in Fig. 1, Fig. 3, Fig. 4 and Fig. 5, air-path interface 8 includes that driving gas connects
Mouth, sample gas interface and tail gas interface, air-path interface 8 are additionally provided with six-way valve 15 and quantity tube 16, and pressure maintaining valve 6 is connected to FID inspection
Device 5 is surveyed, fid detector 5 is connected to chromatographic column 12.Six-way valve 15 and quantity tube 16 cooperate, and can be precisely controlled into fid detector
5 gas flow.Quantity tube 16 can use stainless steel quantity tube 16, can select suitable quantity tube according under test gas component
16 specifications.Sample gas keeps constant flow by quantity tube 16, and 6 stabilized driving atmospheric pressure of pressure maintaining valve reduces sample tolerance and ties to detection
The influence of fruit improves accuracy in detection.
In a preferred embodiment, as shown in Fig. 1, Fig. 5, Fig. 6 and Fig. 7, fid detector 5 is provided with polarization pole
With collector 507, polarization pole and collector 507 are connected to amplifier 17 and data logger 18.Polarization pole connects with collector 507
Enter circuit to be connected with resistance, amplifier 17 is connected to resistance both ends, the circuit signal in amplifying circuit, recorder record amplifier
Signal in 17.
In a preferred embodiment, as shown in Figure 1 and Figure 5, fid detector 5 is mounted in a heat carrier, is led
Hot body is provided with sensor for measuring temperature.Heat carrier can and structural strength higher material good using thermal conductivity such as stainless steels
It is made, the types such as thermocouple thermometer, resistance thermometer can be used in sensor for measuring temperature, by measuring thermally conductive body temperature
Degree calculates flame temperature, monitors VOC ionising effect convenient for detector, and the ratio of hydrogen, air is adjusted according to thermally conductive temperature
Example or flow, to reach best detection effect.
In a preferred embodiment, as shown in Figure 1, Figure 2 and Figure 3,1 front of shell is provided with work station touch screen
19 and communication interface 20, communication interface 20 is USB interface or TypeC interface.User can by work station touch screen 19 open,
Detector is closed, hydrogen, air are selected and drives the data such as the flow of gas, the operating mode of detector, 3 temperature of post case.Detection
After beginning, the data such as the meeting of work station touch screen 19 real-time display detection information, detector working condition, after detection, work
Testing result can be shown on touch screen 19 by standing, convenient for the user to operate and observation.Communication interface 20 can be used in user, sets control
It is standby to be interacted with detector, remotely to control detector, detector is also convenient for by the detection data of storage and is delivered to external device.With
Family can include but is not limited to PC, mobile phone by communication interface 20, connecting detection instrument and external device, external device, facilitate use
Family real time inspection detector operating parameter and long-range control detector.
In a preferred embodiment, shown in as shown in Figure 1, Figure 2, Fig. 3 and Fig. 5,1 back side of shell or side are provided with one
A or multiple cooling ports 21, cooling port 21 are fan or water cooling interface.Detector uses TCD module 4 and fid detector 5,
Amount of heat can be generated in the course of work, cooling port 21, which is arranged, can will test the heat outflow generated inside instrument, avoid examining
Survey instrument temperature is excessively high to cause error information detection or detector to damage, and improves device reliability, extends device lifetime.
In a preferred embodiment, as shown in Fig. 3, Fig. 4 and Fig. 5, a kind of VOCs on-line detector further includes protecting
Incubator, incubator setting pre-process the gas for flowing into air-path interface 8 in 8 upstream of air-path interface.Sample gas enters detector
Gas circuit, by before chromatographic column 12, the vapor in sample gas may be condensed, condensed water be likely to accumulate in six-way valve 15 or
In quantity tube 16, charge volume is influenced, the vapor of condensation may also absorb a part of VOC component, influence detection accuracy.It has
When the sample gas of condensed water passes through chromatographic column 12, condensed water may influence column effect, and the retention time that may cause the components such as alcohols is big
It is big to shorten, make detector wrong identification component, vapor may also cause the loss of the stationary phase in chromatographic column 12 to damage chromatography
Column 12.Therefore incubator can be set in user, improves the accuracy of detector test result, and protects detector gas circuit, extends
Device lifetime.
In a preferred embodiment, VOCs on-line detector, further includes wireless module, and wireless module is supported blue
One or more of tooth, ZigBee technology, GPRS technology or other wireless communication techniques, to be set with external worlds such as PC, mobile phones
Standby to be connected, timely uploading detection data facilitate user remotely to grasp testing result, and user can also remotely control detector work
Make.
It should be pointed out that the above is only the preferred embodiment of the utility model only, not to limit this reality
With novel, within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all include
It is within the protection scope of the utility model.
Claims (9)
1. a kind of VOCs on-line detector characterized by comprising shell, circuit board, post case, TCD module, fid detector,
Pressure maintaining valve and sampling valve, in which:
The enclosure interior is fixedly installed with the post case and the TCD module, the back side of shell be provided with air-path interface and
Power interface；
The post case side is provided with the circuit board, and the other side is provided with the fid detector；
The fid detector both sides are respectively arranged with the pressure maintaining valve and the sampling valve；
The post case includes post case shell, insulating layer, heated aluminum block, chromatographic column, platinum resistance mounting hole and heating rod mounting hole, institute
The outer surface that chromatographic column is coated on the heated aluminum block is stated, the insulating layer is arranged in the post case shell and the heated aluminum block
Between, the platinum resistance mounting hole and the heating rod mounting hole be arranged inside the heated aluminum block for grafting platinum resistance and
Heating rod.
2. V0Cs on-line detector according to claim 1, it is characterised in that: the fid detector include hydrogen enter pipe,
Air enters pipe, ignition lead, nozzle, make-up gas capillary column, sample load entrance and collector, and the gas that the chromatographic column comes out is logical
The sample load entrance is crossed to enter.
3. VOCs on-line detector according to claim 2, it is characterised in that: the air-path interface includes that driving gas connects
Mouthful, sample gas interface and tail gas interface, the air-path interface is additionally provided with six-way valve and quantity tube, described in the pressure maintaining valve connection
Fid detector, the fid detector are connected to the chromatographic column.
4. VOCs on-line detector according to claim 3, it is characterised in that: the fid detector is provided with polarization pole
And collector, the polarization pole and the collector are connected to amplifier and data logger.
5. VOCs on-line detector according to claim 4, it is characterised in that: the fid detector is mounted on one and leads
Hot internal, the heat carrier is provided with sensor for measuring temperature.
6. V0Cs on-line detector according to claim 5, it is characterised in that: the shell front is provided with work station touching
Screen and communication interface are touched, the communication interface is USB interface or TypeC interface.
7. V0Cs on-line detector according to claim 6, it is characterised in that: the back side of shell or side are provided with one
A or multiple cooling ports, the cooling port are fan or water cooling interface.
8. VOCs on-line detector according to claim 7, it is characterised in that: further include incubator, the incubator is set
It sets in the air-path interface upstream, the gas for flowing into the air-path interface is pre-processed.
9. VOCs on-line detector according to claim 8, it is characterised in that: further include wireless module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920101988.9U CN209656638U (en) | 2019-01-22 | 2019-01-22 | A kind of VOCs on-line detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920101988.9U CN209656638U (en) | 2019-01-22 | 2019-01-22 | A kind of VOCs on-line detector |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822042A (en) * | 2020-05-12 | 2020-10-27 | 上海麦越环境技术有限公司 | Composite metal catalyst for online hydrocarbon removal instrument and preparation method thereof |
| CN113552280A (en) * | 2021-07-20 | 2021-10-26 | 大唐南京环保科技有限责任公司 | Sulfur dioxide gas distribution device and method for detecting performance of flue gas denitration catalyst |
| CN113702574A (en) * | 2021-07-21 | 2021-11-26 | 北京师范大学 | Nitrogen dioxide sailing monitor |
| CN114200072A (en) * | 2022-02-21 | 2022-03-18 | 佛山速敏智能仪器科技有限公司 | Method and device for calibrating online monitoring system for dissolved gas in transformer oil |
| CN114252496A (en) * | 2022-03-01 | 2022-03-29 | 河北沃茵环保科技有限公司 | VOCs online automatic monitoring system |
-
2019
- 2019-01-22 CN CN201920101988.9U patent/CN209656638U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822042A (en) * | 2020-05-12 | 2020-10-27 | 上海麦越环境技术有限公司 | Composite metal catalyst for online hydrocarbon removal instrument and preparation method thereof |
| CN111822042B (en) * | 2020-05-12 | 2023-04-18 | 上海麦越环境技术有限公司 | Composite metal catalyst for online hydrocarbon removal instrument and preparation method thereof |
| CN113552280A (en) * | 2021-07-20 | 2021-10-26 | 大唐南京环保科技有限责任公司 | Sulfur dioxide gas distribution device and method for detecting performance of flue gas denitration catalyst |
| CN113702574A (en) * | 2021-07-21 | 2021-11-26 | 北京师范大学 | Nitrogen dioxide sailing monitor |
| CN114200072A (en) * | 2022-02-21 | 2022-03-18 | 佛山速敏智能仪器科技有限公司 | Method and device for calibrating online monitoring system for dissolved gas in transformer oil |
| CN114252496A (en) * | 2022-03-01 | 2022-03-29 | 河北沃茵环保科技有限公司 | VOCs online automatic monitoring system |
| CN114252496B (en) * | 2022-03-01 | 2022-05-17 | 河北沃茵环保科技有限公司 | VOCs online automatic monitoring system |
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