CN208314002U - A kind of positive pressure explosion-proof type VOCs monitoring system - Google Patents
A kind of positive pressure explosion-proof type VOCs monitoring system Download PDFInfo
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- CN208314002U CN208314002U CN201821029182.5U CN201821029182U CN208314002U CN 208314002 U CN208314002 U CN 208314002U CN 201821029182 U CN201821029182 U CN 201821029182U CN 208314002 U CN208314002 U CN 208314002U
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Abstract
The utility model discloses a kind of positive pressure explosion-proof type VOCs to monitor system, comprising: sampling probe, gas chromatograph, Zero gas generator and hydrogen generator；The connection of the sample gas inlet of sampling probe and gas chromatograph, Zero gas generator and gas chromatograph help fuel gas inlet to connect, the fuel gas inlet connection of hydrogen generator and gas chromatograph；Positive-pressure explosion-proof controller is additionally provided on gas chromatograph, for completely cutting off gas chromatograph and outside air.By the way that positive pressure explosion-proof type VOCs is monitored system setting on site and carries out continual on-line monitoring using gas chromatograph, realize the full-automatic monitoring at scene, it is additionally provided with positive-pressure explosion-proof controller on gas chromatograph, ensure that the safety of gas chromatograph at the scene.
Description
Technical field
The utility model relates to gas monitoring techniques fields, monitor more specifically to a kind of positive pressure explosion-proof type VOCs
System.
Background technique
In the production or use site of the industries such as natural gas, petroleum, chemical industry, metallurgical coking, it will usually generate a certain amount of
Volatile organic matter (Volatile Organic Compounds, VOCs), such as non-methane total hydrocarbons (Non-Methane
HydroCarbon, NMHC) since volatile organic matter is non-environmental protection gas, certain pollution can be generated to air, therefore,
The volatile organic matter to scene is needed to be monitored.
Currently, the monitoring for carrying out volatile organic matter at the scene is mostly by staff's handheld portable gas detector
Or starting monitoring instrument is monitored, the degree of automation is low, and needs staff to enter scene and be operated manually, and has one
Fixed risk.
Utility model content
In view of the deficiencies of the prior art, the utility model provides a kind of positive pressure explosion-proof type VOCs monitoring system, it is intended to solve
Certainly carrying out the monitoring of volatile organic matter at the scene in the prior art is mostly by staff's handheld portable gas detector
Or starting monitoring instrument is monitored, the degree of automation is low and has the technical issues of certain risk.
A kind of positive pressure explosion-proof type VOCs provided by the utility model monitors system, comprising: sampling probe, gas chromatograph,
Zero gas generator and hydrogen generator；
The sampling probe is connect with the sample gas inlet of the gas chromatograph, the Zero gas generator and the gas phase color
Spectrometer helps fuel gas inlet to connect, and the hydrogen generator is connect with the fuel gas inlet of the gas chromatograph；
It is additionally provided with positive-pressure explosion-proof controller on the gas chromatograph, is used for the gas chromatograph and outside air
Isolation.
Optionally, the input terminal of the sampling probe is also connected with air filter, the sampling probe and the air
Gas flow valve is connected between filter.
Optionally, the output end of the sampling probe is also connected with dehumidification by condensation device.
Optionally, the dehumidification by condensation device is connected with peristaltic pump, and the peristaltic pump is used for will be in the dehumidification by condensation device
Condensed fluid discharge.
Optionally, the gas output end of the dehumidification by condensation device is connected with sampling pump, and the both ends of the sampling pump are connected with
First filter and the second filter are provided with humidity alarm on second filter.
Optionally, the other end of second filter is also connected with the first end of three-way ball valve, the three-way ball valve
Second end is connected with calibrating gas holding vessel, and the third end of the three-way ball valve connects the gas chromatograph.
Optionally, the third end of the three-way ball valve connects the gas chromatograph, the threeway by first flowmeter
The third end of ball valve also passes through second flowmeter and connects waste gas outlet.
Optionally, the gas chromatograph is additionally provided with carrier gas inlet, and the carrier gas inlet is connected with one or more nitrogen
Gas holding vessel.
Optionally, the multiple nitrogen storage tank connects the carrier gas inlet by gas busbar connector.
As can be seen from the above technical solutions, the utility model has the following beneficial effects:
It provides in the utility model and is made of sampling probe, gas chromatograph, Zero gas generator and hydrogen generator
Positive pressure explosion-proof type VOCs monitors system, by the way that positive pressure explosion-proof type VOCs is monitored system setting on site and utilizes gas chromatograph
Continual on-line monitoring is carried out, realizes the full-automatic monitoring at scene, it is additionally anti-provided with positive pressure on gas chromatograph
Quick-fried controller ensure that the safety of gas chromatograph at the scene.
Detailed description of the invention
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing:
Fig. 1 is the structural schematic diagram that a kind of positive pressure explosion-proof type VOCs provided by the embodiment of the utility model monitors system；
Fig. 2 is the pneumatic diagram that a kind of positive pressure explosion-proof type VOCs provided by the embodiment of the utility model monitors system.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.
It should be appreciated that specific embodiment described herein is only used to explain the utility model, it is not used to limit this
Utility model.It should be noted that it can be directly another when element is referred to as " being fixed on " or " being set to " another element
On one element or it may be simultaneously present centering elements.When an element is known as " being connected to " another element, it can
To be directly to another element or may be simultaneously present centering elements.It should also be noted that, the utility model is real
Apply the positional terms such as left and right, upper and lower in example, be only each other relative concept or with the normal operating condition of product for reference
, and should not be regarded as restrictive.
As shown in FIG. 1, FIG. 1 is a kind of structures of positive pressure explosion-proof type VOCs monitoring system provided by the embodiment of the utility model
Schematic diagram.A kind of positive pressure explosion-proof type VOCs provided by the utility model monitors system, comprising: sampling probe 1, gas chromatograph 2,
Zero gas generator 3 and hydrogen generator 4.Wherein, gas chromatograph 2 can using gas-chromatography-flame ionization detector into
The monitoring of row volatile organic matter, while qualitative point can also be carried out to characteristic contamination therein (such as: benzene homologues) content
Analysis and Quantitative Monitoring.The sampling probe 1 is connect with the sample gas inlet of the gas chromatograph 2, and it is existing that sampling probe 1 is responsible for acquisition
Air in the environment of field is input in gas chromatograph 2 as sample gas to be analyzed, the Zero gas generator 3 and the gas phase color
Spectrometer 2 helps fuel gas inlet to connect, and the hydrogen generator 4 is connect with the fuel gas inlet of the gas chromatograph 2.Gas-chromatography
Instrument 2 can connect industrial personal computer and by the readout industrial personal computer real-time monitored, will monitor knot accordingly by industrial personal computer
Fruit is shown by display device, in order to staff's real time inspection；In addition, industrial personal computer can also be pre- according to staff
The threshold value first set carries out judgement processing to monitoring result, passes through alarm in time when monitoring result is more than preset threshold value
Device is alarmed, to notify staff timely to be handled.Wherein, zero gas is as combustion-supporting gas, without containing it is to be measured at
Point or interfering substance, but can contain the ingredient unrelated with measurement, under normal circumstances using be free of ingredient to be measured High Purity Nitrogen or
Clean air is as zero gas.
It is additionally provided with positive-pressure explosion-proof controller on the gas chromatograph 2, for the gas chromatograph 2 and the external world is empty
Air bound is exhausted.Due to being possible to generate electric spark inside gas chromatograph 2 in the process of work its, they are once quick-fried with scene
Fried property gas obscures object and meets, and will lead to the generation of explosion, leads to equipment damage.By being installed just on gas chromatograph 2
Explosion-proof controller is pressed, under the action of positive-pressure explosion-proof controller, constantly has purification air or nitrogen to be continually fed into gas phase color
In spectrometer 2, so that the inflammable and explosive mixed gas in external environment can not touch the electric elements of gas chromatograph 2 just
Often generated electric spark or dangerous temperature when work, to achieve the purpose that gas chromatograph 2 is explosion-proof, working at the same time heat can
It is taken away with gas circuit, there is good heat sinking function, work can be carried out continuously by further ensuring gas chromatograph 2.
As shown in Fig. 2, Fig. 2 is the gas circuit that a kind of positive pressure explosion-proof type VOCs provided by the embodiment of the utility model monitors system
Figure.In order to be removed the impurity such as dust, solid particle in air, the input terminal of the sampling probe 1 can also be connected
There is air filter 11, is connected with gas flow valve 12 between the sampling probe 1 and the air filter 11.Compressed air
After can be by air filter 11 and gas flow valve 12, it be passed into sampling probe 1, wherein gas flow valve 12
Setting the flow of the air into sampling probe 1 can be manually adjusted according to the actual conditions of monitoring in order to staff.
Since in sampling probe 1 collected air is inevitably doped with moisture content, and the moisture content adulterated can be right
Subsequent combustion step has an impact, and therefore, can also be connected with dehumidification by condensation device 13 in the output end of the sampling probe 1.
The dehumidification by condensation device 13 is connected with peristaltic pump 131, and the peristaltic pump 131 is used for the condensate liquid in the dehumidification by condensation device 13
Body discharge.The peristaltic pump 131 being set on dehumidification by condensation device 13 is mainly alternately squeezed by the elastic delivery hose to pump
Pressure and release are to pump fluid, just as being squeezed with two fingers hose, as the finger moves, manage interior formation negative pressure, liquid
Body flows therewith, so that condensed liquid is discharged.
For the ease of collecting gas as sample, the gas output end of the dehumidification by condensation device 13 is also connected with sampling pump
14, the both ends of the sampling pump 14 are connected with first filter 15 and the second filter 16, are arranged on second filter 16
There is humidity alarm.First filter 15 and the second filter 16 can be ingress filter device, further to through dehumidification by condensation device
Gas after 13 carries out ingress filter.In addition, humidity alarm can also be arranged on the second filter 16, through dehumidification by condensation device
13 and first filter 15 and the second filter 16 after gas humidity it is not yet up to standard when, humidity alarm and alarm,
In order to avoid there is also the gases of certain moisture to enter in gas chromatograph 2, the analysis of gas chromatograph 2 is influenced.
Before entering gas chromatograph 2 by the filtered air that dehumidifies, for the accuracy for guaranteeing measurement result, may be used also
To be mixed into Standard Gases in air.It is mixed to make air and Standard Gases play the role of interflow, second filter 16
The other end is also connected with the first end of three-way ball valve 17, and the second end of the three-way ball valve 17 is connected with calibrating gas holding vessel
18, the third end of the three-way ball valve 17 connects the gas chromatograph 2.
In addition, the third end of the three-way ball valve 17 connects the gas chromatograph 2 by first flowmeter 171, it is described
The third end of three-way ball valve 17 also passes through second flowmeter 172 and connects waste gas outlet.It is needing quantitatively to fill the sample gas after mixing
When entering into gas chromatograph 2, opens first flowmeter 171 and be filled with sample gas；When making humidity not there is also moisture content in sample gas
When up to standard, second flowmeter 172 can be opened, discarded sample gas is discharged.
Optionally, the gas chromatograph 2 is additionally provided with carrier gas inlet, and the carrier gas inlet is connected with one or more nitrogen
Gas holding vessel 21.Wherein, the effect of carrier gas be with certain flow velocity carrier band gaseous sample or the sample gas after gasifying together
It is separated into chromatographic column, then each component after being separated is loaded into detector and detects, and finally flows out chromatographic system and puts
Empty or collection, carrier gas have been carrier band and have not participated in centrifugation substantially.It is the multiple when using multiple nitrogen storage tanks 21
Nitrogen storage tank 21 can connect the carrier gas inlet by gas busbar connector 22.
The embodiments of the present invention are described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, the above mentioned embodiment is only schematical, rather than restrictive, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (9)
1. a kind of positive pressure explosion-proof type VOCs monitors system characterized by comprising sampling probe, gas chromatograph, zero gas occur
And hydrogen generator；
The sampling probe is connect with the sample gas inlet of the gas chromatograph, the Zero gas generator and the gas chromatograph
Help fuel gas inlet to connect, the hydrogen generator is connect with the fuel gas inlet of the gas chromatograph；
Positive-pressure explosion-proof controller is additionally provided on the gas chromatograph, for by the gas chromatograph and outside air every
Absolutely.
2. positive pressure explosion-proof type VOCs according to claim 1 monitors system, which is characterized in that the input of the sampling probe
End is also connected with air filter, is connected with gas flow valve between the sampling probe and the air filter.
3. positive pressure explosion-proof type VOCs according to claim 2 monitors system, which is characterized in that the output of the sampling probe
End is also connected with dehumidification by condensation device.
4. positive pressure explosion-proof type VOCs according to claim 3 monitors system, which is characterized in that the dehumidification by condensation device connection
There is peristaltic pump, the peristaltic pump is used to for the condensed fluid in the dehumidification by condensation device being discharged.
5. positive pressure explosion-proof type VOCs according to claim 4 monitors system, which is characterized in that the gas of the dehumidification by condensation device
Body output end is connected with sampling pump, and the both ends of the sampling pump are connected with first filter and the second filter, second mistake
Humidity alarm is provided on filter.
6. positive pressure explosion-proof type VOCs according to claim 5 monitors system, which is characterized in that second filter it is another
One end is also connected with the first end of three-way ball valve, and the second end of the three-way ball valve is connected with calibrating gas holding vessel, and described three
The third end of pass ball valve connects the gas chromatograph.
7. positive pressure explosion-proof type VOCs according to claim 6 monitors system, which is characterized in that the third of the three-way ball valve
End connects the gas chromatograph by first flowmeter, and the third end of the three-way ball valve is also connected by second flowmeter useless
Gas outlet.
8. positive pressure explosion-proof type VOCs according to claim 1 monitors system, which is characterized in that the gas chromatograph is also set
It is equipped with carrier gas inlet, the carrier gas inlet is connected with one or more nitrogen storage tanks.
9. positive pressure explosion-proof type VOCs according to claim 8 monitors system, which is characterized in that the multiple nitrogen storage tank
The carrier gas inlet is connected by gas busbar connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821029182.5U CN208314002U (en) | 2018-07-01 | 2018-07-01 | A kind of positive pressure explosion-proof type VOCs monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821029182.5U CN208314002U (en) | 2018-07-01 | 2018-07-01 | A kind of positive pressure explosion-proof type VOCs monitoring system |
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| CN208314002U true CN208314002U (en) | 2019-01-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824042A (en) * | 2019-11-06 | 2020-02-21 | 海湾环境科技（北京）股份有限公司 | Oil gas monitoring system and method |
| CN111701406A (en) * | 2020-07-13 | 2020-09-25 | 西安热工研究院有限公司 | Flue gas dewatering system and method for flue gas detection |
-
2018
- 2018-07-01 CN CN201821029182.5U patent/CN208314002U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824042A (en) * | 2019-11-06 | 2020-02-21 | 海湾环境科技（北京）股份有限公司 | Oil gas monitoring system and method |
| CN111701406A (en) * | 2020-07-13 | 2020-09-25 | 西安热工研究院有限公司 | Flue gas dewatering system and method for flue gas detection |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 b1-1201, building b1b2, Guangming science and Technology Park, Investment Promotion Bureau, Fenghuang community, Fenghuang street, Guangming District, Shenzhen, Guangdong (business premises are set up in units 5B and 5C, building B6, Guangming science and Technology Park, Investment Promotion Bureau, Fenghuang community, Fenghuang street, Guangming District, Shenzhen to engage in production and business activities) Patentee after: Shenzhen noan intelligent Co.,Ltd. Address before: 12 / F, building A2, Guangming Science Park, China Merchants Group, 3009 Guangming Street, Guangming New District, Shenzhen, Guangdong 518000 Patentee before: SHENZHEN NUOAN ENVIRONMENTAL & SAFETY Inc. |
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| CP03 | Change of name, title or address |