CN211927851U - Quick on-line monitoring device of volatile organic compounds - Google Patents
Quick on-line monitoring device of volatile organic compounds Download PDFInfo
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- CN211927851U CN211927851U CN202020474796.5U CN202020474796U CN211927851U CN 211927851 U CN211927851 U CN 211927851U CN 202020474796 U CN202020474796 U CN 202020474796U CN 211927851 U CN211927851 U CN 211927851U
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Abstract
The utility model discloses a quick online monitoring device of volatile organic compounds, which relates to the field of atmospheric analysis, and comprises a sampling mechanism and an analysis mechanism which are connected with each other, wherein the sampling mechanism comprises a sampling pipe and a sampling nozzle, a first filter and a temperature controller are arranged between the sampling pipe and the sampling nozzle, sample gas collected by the sampling nozzle enters the sampling pipe after passing through the first filter and the temperature controller, and the analysis mechanism comprises a VOCs analyzer; the analysis mechanism is connected with the sampling mechanism through the heat tracing pipe, and a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a second filter are sequentially arranged between the VOCs analyzer and the sampling mechanism. The utility model discloses can obtain more accurate VOCs result.
Description
Technical Field
The utility model relates to an atmospheric analysis field, concretely relates to quick on-line monitoring device of volatile organic compounds.
Background
VOCs (Volatile Organic Compounds) are a main atmospheric pollutant, and Volatile Organic Compounds refer to Compounds with boiling points of 50-90 ℃, have saturated vapor pressure of over 133.32Pa at room temperature, and exist in air in a vapor form at normal temperature.
The main components of the VOCs comprise hydrocarbons, halogenated hydrocarbons, oxygen hydrocarbons and nitrogen hydrocarbons, and the VOCs can be further divided into eight types according to different chemical structures: alkanes, aromatic hydrocarbons, alkenes, halocarbons, esters, aldehydes, ketones and others, most VOCs have unpleasant special odor and have toxic, irritant, teratogenic and carcinogenic effects, and especially benzene, toluene, formaldehyde and the like cause great harm to human health.
Therefore, VOCs content is the important index of control atmosphere quality, and at present, the environment case of mainly using volatile organic compounds detects VOCs content, but, when using, needs the staff on-the-spot relevant data of reading, and the effect is relatively poor, and organic matters such as a large amount of formaldehyde of easy absorption in the box, leads to the data that the sample connection read to be less than the actual value of volatile organic compounds in the box, and the error is great.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the prior art, the utility model aims to provide a quick on-line monitoring device of volatile organic compounds can obtain more accurate VOCs result.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a quick online monitoring device for volatile organic compounds comprises a sampling mechanism and an analysis mechanism which are connected with each other, wherein the sampling mechanism comprises a sampling pipe and a sampling nozzle, a first filter and a temperature controller are arranged between the sampling pipe and the sampling nozzle, sample gas collected by the sampling nozzle enters the sampling pipe after passing through the first filter and the temperature controller, and the analysis mechanism comprises a VOCs analyzer;
the analysis mechanism is connected with the sampling mechanism through the heat tracing pipe, and a first electromagnetic valve, a second electromagnetic valve, a third electromagnetic valve and a second filter are sequentially arranged between the VOCs analyzer and the sampling mechanism.
Furthermore, one end of the sampling pipe is connected with the sampling nozzle through a first pitot tube, the other end of the sampling pipe is connected with the analysis mechanism after sequentially passing through the drying bottle and the smoke dust filter, and the first filter and the temperature controller are located in the first pitot tube.
Furthermore, the analysis mechanism still includes first air inlet and second air inlet, first air inlet is connected to the VOCs analysis appearance after passing through third filter, second solenoid valve, third solenoid valve and second filter, second air inlet is connected to the VOCs analysis appearance after passing through fourth filter, blowback pump, third solenoid valve and second filter.
Furthermore, the VOCs analyzer is connected with the air pump through a mass flow sensor and a buffer bottle.
Furthermore, the analysis mechanism also comprises a circuit controller, and the circuit controller is electrically connected with the temperature controller, the VOCs analyzer, the first electromagnetic valve, the second electromagnetic valve, the third electromagnetic valve, the back flushing pump, the mass flow sensor and the air suction pump.
Furthermore, an electronic condenser is arranged between the third filter and the second electromagnetic valve, and an electronic condenser is arranged between the fourth filter and the back flushing pump; and a flowmeter is arranged between the third electromagnetic valve and the second filter.
Furthermore, a humidity sensor and a pressure sensor are arranged inside the analysis mechanism.
Furthermore, the analysis mechanism further comprises a data processor, the VOCs analyzer is connected with the data processor, and the data processor is connected with an external display, a printer and a memory.
Furthermore, the analysis mechanism is connected with an external enterprise and an environmental protection monitoring mechanism through a network.
Compared with the prior art, the utility model has the advantages of:
(1) the utility model provides a quick on-line monitoring device of volatile organic compounds, the gas that awaits measuring carries out aqueous vapor filtration and temperature regulation through first filter and temperature controller earlier through the sampling mouth for get into analytical mechanism's gaseous constancy of temperature, and relatively dry, carry out flow control through first solenoid valve, second solenoid valve, third solenoid valve again and get into the second filter after, further get rid of dust and aqueous vapor, reentrant VOCs analysis appearance carries out the analysis, the VOCs result that obtains is more accurate.
(2) The utility model provides a quick on-line monitoring device of volatile organic compounds, through circuit controller and temperature controller, VOCs analysis appearance, first solenoid valve, the second solenoid valve, the third solenoid valve, the blowback pump, mass flow sensor, aspiration pump and outside display, the printer, the memory is connected, when using, the staff can read relevant data through the display, and control each valve and sensor, the operation is simpler, and simultaneously, analytical agency passes through the network and is connected with outside enterprise and environmental protection monitoring mechanism, effectively uploads data.
Drawings
Fig. 1 is a schematic structural diagram of a rapid online monitoring device for volatile organic compounds in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of the sampling mechanism in the embodiment of the present invention.
In the figure: 1-a sampling mechanism, 2-an analysis mechanism, 3-a sampling pipe, 4-a first pitot tube, 5-a sampling nozzle, 6-a drying bottle, 7-a smoke filter, 8-a sampler before purification, 9-a sampler after purification, 10-a VOCs analyzer, 11-a heat tracing pipe, 12-a first electromagnetic valve, 13-a second electromagnetic valve, 14-a third electromagnetic valve, 15-a second filter, 16-a first air inlet, 17-a second air inlet, 18-a third filter, 19-a fourth filter 19, 20-a back-flushing pump, 21-a mass flow sensor, 22-a buffer bottle, 23-an air suction pump, 24-a sampling pitot tube and 25-a pressure and temperature sensing mechanism.
Detailed Description
The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 and fig. 2, the embodiment of the present invention provides a rapid online monitoring device for volatile organic compounds, including interconnected sampling mechanism 1 and analysis mechanism 2, sampling mechanism 1 and analysis mechanism 2 are connected through heat tracing pipe 11, and the number of sampling mechanism 1 is set according to actual need, and may be one or more, and its setting mode and structure may be adjusted as required.
In this embodiment, one end of the sampling tube 3 is connected with the sampling nozzle 5 through the first pitot tube 4, the other end is connected with the analysis mechanism 2 after passing through the drying bottle 6 and the smoke filter 7 in sequence, the first filter and the temperature controller are both located in the first pitot tube 4, the drying bottle 6 and the smoke filter 7 can further remove moisture and dust in the sample gas, and the accuracy of the detection result can be improved.
The analysis mechanism 2 comprises a VOCs analyzer 10 and a mass flow sensor 21 which are connected with each other, the mass flow sensor 21 is connected with an air pump 23 after passing through a buffer bottle 22, and a first electromagnetic valve 12, a second electromagnetic valve 13, a third electromagnetic valve 14 and a second filter 15 are sequentially arranged between the VOCs analyzer 10 and the sampling mechanism 1.
The analysis mechanism 2 further comprises a first air inlet 16 and a second air inlet 17, the first air inlet 16 is connected to the VOCs analyzer 10 through a third filter 18, a second electromagnetic valve 13, a third electromagnetic valve 14 and a second filter 15, the second air inlet 17 is connected to the VOCs analyzer 10 through a fourth filter 19, a back flushing pump 20, a third electromagnetic valve 14 and the second filter 15, an electronic condenser is arranged between the third filter 18 and the second electromagnetic valve 13, and an electronic condenser is arranged between the fourth filter 19 and the back flushing pump 20; a flow meter is arranged between the third solenoid valve 14 and the second filter 15.
The analysis mechanism 2 further comprises a circuit controller, and the circuit controller is electrically connected with the temperature controller, the VOCs analyzer 10, the first electromagnetic valve 12, the second electromagnetic valve 13, the third electromagnetic valve 14, the back flushing pump 20, the mass flow sensor 21 and the air suction pump 23.
In practical use, the analysis mechanism 2 further comprises a data processor, the VOCs analyzer 10 is connected with the data processor, the data processor is connected with an external display, a printer and a storage, and the analysis mechanism 2 is connected with an external enterprise and an environmental protection monitoring mechanism through a network; the analysis mechanism 2 is provided with a humidity sensor and a pressure sensor inside.
When the utility model is used, the gas to be measured is filtered by water vapor and adjusted in temperature through the first filter and the temperature controller through the sampling nozzle 5, so that the temperature of the gas entering the analysis mechanism is constant and is relatively dry, and then the gas enters the second filter 15 after being subjected to flow adjustment through the first electromagnetic valve 12, the second electromagnetic valve 13 and the third electromagnetic valve 14, dust and water vapor are further removed, and then the gas enters the VOCs analyzer 10 for analysis, and the obtained VOCs result is relatively accurate, and the utility model is connected with the temperature controller, the VOCs analyzer 10, the first electromagnetic valve 12, the second electromagnetic valve 13, the third electromagnetic valve 14, the back-flushing pump 20, the mass flow sensor 21, the air suction pump 23 and an external display, a printer and a memory through the display, when in use, a worker can read relevant data through the display and control each valve and each sensor, the operation is simpler, and simultaneously, analysis mechanism 2 is connected with outside enterprise and environmental protection monitoring agency through the network, effectively uploads data.
In practical use, if the change of the VOCs before and after the chimney purification needs to be detected, the sampling mechanism 1 can be simplified, as shown in fig. 2, a pre-purification sampler 8 and a post-purification sampler 9 are arranged at corresponding positions in the chimney, each of the pre-purification sampler 8 and the post-purification sampler 9 comprises a sampling probe and a flue gas transmission filter tube which are connected with each other, wherein the sampling probe is positioned in the flue, a spiral electric heater is arranged in the sampling probe, a precise filter is arranged in the flue gas transmission filter tube, the flue gas transmission filter tube is an electric heat tracing type constant power sampling tube (i.e. a heat tracing tube) through a sample gas transmission pipeline and is connected with the analysis mechanism 2, a sampling pitot tube 24 is further arranged in the chimney, the sampling pitot tube 24 is connected with an external pressure and temperature sensing mechanism 25 for monitoring the dynamic and static pressure and temperature in the flue, the pressure and temperature sensing mechanism 25, in this embodiment, the circuit controller is further connected with an alarm, and when the pressure and the temperature in the flue are abnormal or the pressure and the humidity in the analysis mechanism 2 are abnormal, the alarm is given to remind a worker of performing corresponding operation.
The first filter, the second filter 15, and the third filter 18 in this embodiment are all dust/water-gas filters.
The present invention is not limited to the above preferred embodiments, and any person can obtain other products in various forms without departing from the scope of the present invention, but any change in shape or structure is within the scope of protection.
Claims (9)
1. The utility model provides a quick on-line monitoring device of volatile organic compounds, includes interconnect's sampling mechanism (1) and analytic mechanism (2), its characterized in that: the sampling mechanism (1) comprises a sampling pipe (3) and a sampling nozzle (5), a first filter and a temperature controller are arranged between the sampling pipe (3) and the sampling nozzle (5), sample gas collected by the sampling nozzle (5) enters the sampling pipe (3) through the first filter and the temperature controller, and the analysis mechanism (2) comprises a VOCs analyzer (10);
the analysis mechanism (2) is connected with the sampling mechanism (1) through a heat tracing pipe (11), and a first electromagnetic valve (12), a second electromagnetic valve (13) and a second filter (15) are sequentially arranged among the VOCs analyzer (10), the third electromagnetic valve (14) and the sampling mechanism (1).
2. The rapid online monitoring device for volatile organic compounds according to claim 1, characterized in that: one end of the sampling pipe (3) is connected with the sampling nozzle (5) through a first pitot tube (4), the other end of the sampling pipe is connected with the analysis mechanism (2) after sequentially passing through a drying bottle (6) and a smoke filter (7), and the first filter and the temperature controller are located in the first pitot tube (4).
3. The rapid online monitoring device for volatile organic compounds according to claim 2, characterized in that: the analysis mechanism (2) further comprises a first air inlet (16) and a second air inlet (17), the first air inlet (16) is connected to the VOCs analyzer (10) after passing through a third filter (18), a second electromagnetic valve (13), a third electromagnetic valve (14) and a second filter (15), and the second air inlet (17) is connected to the VOCs analyzer (10) after passing through a fourth filter (19), a blowback pump (20), the third electromagnetic valve (14) and the second filter (15).
4. The rapid online monitoring device for volatile organic compounds according to claim 2, characterized in that: the VOCs analyzer (10) is connected with the air pump (23) through a mass flow sensor (21) and a buffer bottle (22).
5. The device for rapidly monitoring the volatile organic compounds on line according to claim 4, wherein: the analysis mechanism (2) further comprises a circuit controller, and the circuit controller is electrically connected with the temperature controller, the VOCs analyzer (10), the first electromagnetic valve (12), the second electromagnetic valve (13), the third electromagnetic valve (14), the back flushing pump (20), the mass flow sensor (21) and the air suction pump (23).
6. The device for rapidly monitoring the volatile organic compounds on line according to claim 3, wherein: an electronic condenser is arranged between the third filter (18) and the second electromagnetic valve (13), and an electronic condenser is arranged between the fourth filter (19) and the back flushing pump (20); and a flowmeter is arranged between the third electromagnetic valve (14) and the second filter (15).
7. The device for rapidly monitoring the volatile organic compounds on line according to claim 6, wherein: and a humidity sensor and a pressure sensor are arranged in the analysis mechanism (2).
8. The rapid online monitoring device for volatile organic compounds according to claim 7, characterized in that: the analysis mechanism (2) further comprises a data processor, the VOCs analyzer (10) is connected with the data processor, and the data processor is connected with an external display, a printer and a memory.
9. The rapid online monitoring device for volatile organic compounds according to claim 8, wherein: the analysis mechanism (2) is connected with an external enterprise and an environmental protection monitoring mechanism through a network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020474796.5U CN211927851U (en) | 2020-04-03 | 2020-04-03 | Quick on-line monitoring device of volatile organic compounds |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020474796.5U CN211927851U (en) | 2020-04-03 | 2020-04-03 | Quick on-line monitoring device of volatile organic compounds |
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| CN211927851U true CN211927851U (en) | 2020-11-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595559A (en) * | 2020-12-04 | 2021-04-02 | 广东省测试分析研究所（中国广州分析测试中心） | Universal vehicle material volatile organic compound sampling system and detection method |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112595559A (en) * | 2020-12-04 | 2021-04-02 | 广东省测试分析研究所（中国广州分析测试中心） | Universal vehicle material volatile organic compound sampling system and detection method |
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