CN208752053U - Volatile organic compounds detection device - Google Patents
Volatile organic compounds detection device Download PDFInfo
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- CN208752053U CN208752053U CN201821363803.3U CN201821363803U CN208752053U CN 208752053 U CN208752053 U CN 208752053U CN 201821363803 U CN201821363803 U CN 201821363803U CN 208752053 U CN208752053 U CN 208752053U
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Abstract
The utility model relates to field of gas detection, disclose a kind of volatile organic compounds detection device, the gas sampling probe (1) is connected to by tracheae with the air inlet of the two-way control valve (2), the gas outlet of the two-way control valve (2) is connected to the inlet end of first dust filter unit (3), the outlet side of first dust filter unit (3) is connected to the air inlet of the triple valve (4), the gas outlet of the triple valve (4) is connected to the inlet end of the aspiration pump (5), the outlet side of the aspiration pump (5) is connected to the inlet end of the condenser (6), the outlet side of the condenser (6) is connected to the inlet end of the flowmeter (7), the outlet side of the flowmeter (7) is connected to the VOC detector (8).Compared with prior art, the utility model detection accuracy is higher, long service life.
Description
Technical field
The utility model relates to field of gas detection, in particular to a kind of volatile organic compounds detection device.
Background technique
Volatile organic contaminant (VOC) refers to that saturated vapor pressure is more than 70 .9Pa or boiling point less than 260 DEG C at room temperature
Organic matter, total volatile organic compounds (TVOC) are the summation of various volatile organic contaminants, including benzene homologues, alkane
Class, olefines, halogenated hydrocarbon, esters, ketone aldehydes and other volatile organic matters.Pollution sources are mainly from fuel outside the room TVOC
Burning and communications and transportation, indoor pollution source mainly from construction material such as artificial board, plastic plate, foam heat insulating material etc.,
Ornament materials such as coating, paint and adhesive.Volatile organic matter has irritation, teratogenesis, carcinogenicity, mutagenicity, no
Skin and mucous membrane can be only directly affected, acute lesion is generated to human body, the function of digestive system can be also influenced, appetite occurs not
The symptoms such as vibration, nausea, or even central nervous system function can also be influenced, there are the symptoms such as dizzy, drowsiness, powerless, uncomfortable in chest, to people
Body health causes to seriously threaten.Moreover, volatile organic matter also will cause atmosphere pollution, soil pollution, water pollution etc.,
Destroy ecological environment.Therefore, reinforce being of great significance to the detection of volatile organic matter.
Current existing volatile organic compounds detection device usually has detection accuracy low, and VOC detector uses the longevity
Order shorter defect.
Utility model content
Purpose of utility model: aiming at the problems existing in the prior art, the utility model provides a kind of volatile organic
Analyte detection device is closed, detection accuracy is higher, long service life.
Technical solution: the utility model provides a kind of volatile organic compounds detection device, including gas sampling is visited
Head, two-way control valve, the first dust filter unit, triple valve, aspiration pump, condenser, flowmeter and VOC detector, the gas
Sampling probe is connected to by tracheae with the air inlet of the two-way control valve, the gas outlet of the two-way control valve and described first
The inlet end of dust filter unit is connected to, and the outlet side of first dust filter unit is connected to the air inlet of the triple valve, institute
The gas outlet for stating triple valve is connected to the inlet end of the aspiration pump, the air inlet of the outlet side of the aspiration pump and the condenser
End connection, the outlet side of the condenser are connected to the inlet end of the flowmeter, described in the outlet side connection of the flowmeter
VOC detector.
Further, the commutation mouth of the triple valve is connected to by pipeline with the air inlet of the two-way control valve.If
The gas for entering the first dust filter unit through two-way valve is all pumped by aspiration pump by triple valve, then the gas being pumped into from pumping
Pressure it is excessive, the biggish gas of pressure enter condenser condensation and drying effect it is poor, be discharged into VOC from condenser outlet side
The gas temperature of detector is still larger and can contain moisture, can reduce the detection accuracy of VOC detector, and pressure is big, temperature is high
And the gas containing moisture can also damage the sensor in VOC detector, influence the service life of VOC detector；Institute
With, in the present invention, the commutation mouth of triple valve is connected to the air inlet of two-way control valve, in this manner it is possible to control into
A part of gas for entering triple valve, which is evacuated, to be pumped into, some gas transtracheal is recycled into two-way control valve, then
The first dust filter unit is entered by two-way control valve again, this portion gas can be in triple valve, two-way control valve and first
A circulation loop is formed between dust filter unit three, to reduce the pressure for the gas that pumping is pumped into, guarantees subsequent condensation
The condensation of device and drying effect extend the service life of sensor in VOC detector.
Further, the volatile organic compounds detection device further includes peristaltic pump, the water inlet of the peristaltic pump
Mouth is connected to the discharge outlet of the condenser.After condenser condenses, the moisture in gas is removed to be arranged through condenser discharge outlet
Out, increasing peristaltic pump is to enter VOC detector with gas to avoid moisture to accelerate for the moisture in condenser to be discharged, right
Sensor in VOC detector damages.
Further, the volatile organic compounds detection device further includes reset valve, the outlet of the aspiration pump
End is connected to by the reset valve with the inlet end of the condenser.The pressure for the gas being pumped into through aspiration pump from triple valve is still
It is larger, and the flow velocity for entering the gas of VOC detector needs to control in 0.5L/min or so, in order to realize the accurate of gas flow rate
It controls, increases reset valve between aspiration pump and condenser in the utility model, so that entering the gas of condenser from aspiration pump
Pressure reduction increases fine tuning until when the gas flow rate that flowmeter measures is in 0.5 L/min or so before condenser
Valve can control and enter the flow velocity of the gas of condenser and remain in 0.5 L/min or more, and one side condensation effect is more aobvious
It writes, the gas after being on the other hand condensed, which enters back into VOC detector, can then guarantee its detection accuracy, can also extend VOC detection
The service life of sensor in instrument.
Further, the volatile organic compounds detection device further includes the second dust filter unit, the condensation
The outlet side of device is connected to the inlet end of second dust filter unit, the outlet side of second dust filter unit and the stream
The inlet end of meter is connected to.After the filtering of the first dust filter unit, a small amount of dust particles residual is still had, so, this reality
In novel, before gas enters VOC detector, the second dust filter unit is also added between condenser and flowmeter,
To carry out secondary filter to the gas that will enter VOC detector, guarantee the cleanliness of the gas entered in VOC detector,
To guarantee detection accuracy, extend the service life of VOC detector.
Preferably, the gas sampling probe includes outer sleeve and inner sleeve, one end of the inner sleeve and nut thread
Connection, the other end are threadedly coupled with the air inlet of the two-way control valve, and middle part is fixed with positioning sleeve, and the outer sleeve covers
Outside the inner sleeve, and the outer sleeve is gripped by the nut and the positioning sleeve；It is close on the outer sleeve
One end side wall of the positioning sleeve, one end side wall on the inner sleeve close to the nut offer several air inlets.
The gas being externally entering in the gas sampling probe in the utility model enters housing through the air inlet on outer sleeve first
Between cylinder and inner sleeve, then enters in inner sleeve using after one section of spacing from the air inlet on inner sleeve, then pass through again
The outlet side of inner sleeve enters the air inlet of two-way control valve；Due to the air inlet on the air inlet and inner sleeve on outer sleeve
Between have certain spacing, extraneous rainwater and small winged insect etc. can be effectively prevent to enter inner sleeve from the air inlet of outer sleeve
Air inlet effectively avoids rainwater and small winged insect from entering in inner sleeve, avoids the sensor in VOC detector by rainwater or small winged insect
Damage, avoids the air inlet of outer sleeve and inner sleeve from being blocked by small winged insect, guarantees the sampling functions of gas sampling probe, guarantees
The measurement accuracy of VOC detector；In addition, outer sleeve is fixed by nut and positioning sleeve, only need to twist off on nut when needing to dismantle
I.e. detachable outer sleeve, installation easy to disassemble, convenient for the cleaning to inner sleeve and outer sleeve.
Further, the sampling probe of the VOC detector further includes filter screen set, and the filter screen set is covered in the inner sleeve
Cylinder lateral wall, and between the inner sleeve and the outer sleeve.If some dust granules or small winged insect are from housing
The air inlet of cylinder is flown between outer sleeve and inner sleeve, will be possible to enter in inner sleeve from the air inlet of inner sleeve, institute
In the present invention, filter screen set is added between outer sleeve and inner sleeve, the setting of the filter screen set can effectively prevent ash
Dirt particle or small winged insect enter in inner sleeve from the air inlet of inner sleeve, avoid the damage to the sensor in VOC detector；
After a period of use, it if necessary to replacement filter screen set, then only needs to twist off nut, outer sleeve, which is removed, to extract strainer
Lower replacement, it is very convenient.
Further, the both ends of the outer sleeve are respectively fitted on the outer wall of the nut and the positioning sleeve.
Preferably, the first sealing ring is cased between the inner wall of the outer sleeve and the outer wall of the nut；Described outer
The second sealing ring is cased between the inner wall of sleeve and the outer wall of the positioning sleeve.The setting of first sealing ring can effectively prevent outer
Boundary's rainwater etc. enters inner sleeve between the inner wall of outer sleeve and the outer wall of nut；The setting of second sealing ring can be effectively prevent
Extraneous rainwater etc. enters inner sleeve between the inner wall of outer sleeve and the outer wall of positioning sleeve.
Preferably, the outer sleeve, the inner sleeve, the nut, the positioning sleeve and the filter screen set are not
Rust steel material.Stainless steel material is more durable, and rust staining will not be generated etc., it prevents rust staining particle from entering inner sleeve, VOC is avoided to examine
Sensor in instrument is surveyed to be damaged due to entering rust staining particle.
The utility model has the advantages that in the utility model, gas enters two-way control valve after being acquired by gas sampling probe, then through the
Enter triple valve after one dust filter unit dust removal by filtration, is then pumped into condenser through pumping and is condensed, condense to 4 DEG C or so
It is discharged and enters the VOC concentration that VOC detector carries out detection gas after 0.5L/min or so through flowmeter control flow, after detection
Gas be discharged through exhaust outlet.As it can be seen that gas compares in itself after the filtering of the first dust filter unit in the utility model
It is cleaner, it can be avoided dust particles etc. and enter VOC detector to damage sensor therein；In addition, entering VOC inspection in gas
It surveys before instrument, also by the cooling of condenser (because if the gas VOC that the present apparatus is used to detect in automobile exhaust cylinder tail gas is dense
Degree, then collected gas temperature is higher), removal moisture drying processing, make enter VOC detector in gas be able to maintain always
Preset temperature provides a reliable and stable detection environment for the sensor in VOC detector, and keep drying it is anhydrous, effectively
The detection accuracy for promoting VOC detector prevents sensor therein from being damaged by high temperature, moisture etc., extends the use of VOC detector
Service life.
This product can be used in real-time monitoring industrial park, chemical company Deng Chang circle Polluted area organic compound analyte detection
Situation, provides alarm warning information in time, and the generation of Pollution protection accident prevents contamination accident from magnifying.
Detailed description of the invention
Fig. 1 is volatile organic compounds detection device schematic diagram in embodiment 1；
Fig. 2 is the schematic perspective view of gas sampling probe in embodiment 1；
Fig. 3 is the main view of gas sampling probe in embodiment 1；
Fig. 4 is the cross-sectional view in the face A-A in Fig. 3；
Fig. 5 is volatile organic compounds detection device schematic diagram in embodiment 2；
Fig. 6 is volatile organic compounds detection device schematic diagram in embodiment 3；
Fig. 7 is the cross-sectional view of gas sampling probe in embodiment 4.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing.
Embodiment 1:
Present embodiments provide for a kind of volatile organic compounds detection devices, as shown in Figure 1, mainly by cabinet 12,
Two-way control valve 2, the first dust-filtering for being fixed on the gas sampling probe 1 of 12 outer wall of cabinet and being arranged in inside cabinet 12
Device 3, triple valve 4, aspiration pump 5, condenser 6, peristaltic pump 9, the second dust filter unit 11, flowmeter 7 and VOC detector 8 form,
Gas sampling probe 1 is connected to by tracheae with the air inlet of two-way control valve 2, the gas outlet of two-way control valve 2 and the first dust
The inlet end of filter 3 is connected to, and the outlet side of the first dust filter unit 3 is connected to the air inlet of triple valve 4, and triple valve 4 goes out
Port is connected to the inlet end of aspiration pump 5, and the outlet side of aspiration pump 5 is connected to the inlet end of condenser 6, the outlet of condenser 6
End is connected to the inlet end of the second dust filter unit 11, and the discharge outlet of condenser 6 is connected to the water inlet of peristaltic pump 9, peristaltic pump 9
Discharge outlet extend to outside cabinet 12, the outlet side of the second dust filter unit 11 is connected to the inlet end of flowmeter 7, flowmeter
7 outlet side is connected to VOC detector 8, and VOC detector 8 can connect display 13 with signal, 4G the whole network leads to module 14 and alarm
Device 15 etc..
As shown in Fig. 2 ~ 4, above-mentioned gas the sampling probe 1 mainly outer sleeve 101 made of stainless steel material, inner sleeve
102, nut 103 and positioning sleeve 104 form, 101 sets of outer sleeve outside inner sleeve 102,102 one end of inner sleeve and nut 103
It being threadedly coupled, the other end is threadedly coupled with the air inlet of two barrels of regulating valves 2, and the middle part of inner sleeve 102 is fixed with positioning sleeve 104,
The both ends of outer sleeve 101 are respectively fitted on the outer wall of nut 103 and positioning sleeve 104, i.e., outer sleeve 101 by nut 103 and is determined
Position set 104 is clamped to outside inner sleeve 102, and it is close to be cased with first between the inner wall of outer sleeve 101 and the outer wall of nut 103
Seal 107 is cased with the second sealing ring 108, on outer sleeve 101 between the inner wall of outer sleeve 101 and the outer wall of positioning sleeve 104
One end side wall close to positioning sleeve 104 opens up several air inlets 105, and one end side wall on inner sleeve 102 close to nut 103 is opened
If several air inlets 105.
The gas being externally entering in this gas sampling probe 1 is entered through the air inlet 105 on outer sleeve 101 first
Between outer sleeve 101 and inner sleeve 102, then using the spacing between outer sleeve 101 and the air inlet 105 of inner sleeve 102
Afterwards, entered in inner sleeve 102 from the air inlet 105 on inner sleeve 102, finally again the outlet side 1021 through inner sleeve 102 into
Enter to two logical adjustings, 2 air inlet, then into triple valve 4 after 3 dust removal by filtration of the first dust filter unit, then through being evacuated
5 suction condenser 6 of pump is condensed, removes water drying, and the moisture that gas is discharged after condensing is extracted out by peristaltic pump 9 and is discharged；Gas
It is condensed into 4 DEG C or so and is discharged into the second dust filter unit 11, the secondary filter through the second dust filter unit 11, and through flow
Gas warp of the meter control flow in the rear VOC concentration for carrying out detection gas into VOC detector 8 of 0.5L/min or so, after detection
The exhaust outlet of the present apparatus is discharged.
Embodiment 2:
Present embodiment is the further improvement of embodiment 1, is mainly theed improvement is that, in the embodiment 1, due to
The gas for entering the first dust filter unit 3 through two-way control valve 2 is all pumped by aspiration pump 5 by triple valve 4, then from aspiration pump 5
The pressure of the gas of suction is excessive, and the biggish gas of pressure enters the condensation of condenser 6 and drying effect is poor, from 6 outlet of condenser
It holds the gas temperature for being discharged into VOC detector 8 still larger and moisture can be contained, the detection essence of VOC detector 8 can be reduced
Degree, pressure is big, temperature is high and the gas containing moisture can also damage the sensor in VOC detector 8, influences VOC inspection
Survey the service life of instrument 8；So in the present embodiment, the air inlet of the commutation mouth and two-way control valve 2 of triple valve 4 is led to
Tracheae connection, such as Fig. 5 are crossed, in this manner it is possible to which a part of gas controlled into triple valve 4 is pumped by aspiration pump 5, there are also one
Divide gas transtracheal to be recycled into two-way control valve 2, the first dust filter unit 3, this portion are then entered by two-way control valve 2 again
Divide gas that can form a circulation loop between 3 three of triple valve 4, two-way control valve 2 and the first dust filter unit, with
The pressure for the gas that aspiration pump 5 is pumped into is reduced, guarantees condensation and the drying effect of subsequent condensation device 6, extends in VOC detector 8
The service life of sensor.
In addition to this, present embodiment is identical with embodiment 1, is not repeated herein.
Embodiment 3:
Present embodiment is the further improvement of embodiment 2, is mainly theed improvement is that, in embodiment 2, through taking out
The pressure of air pump 5 from the gas that triple valve 4 is pumped into is still larger, and the flow velocity for entering the gas of VOC detector 8 needs to control
0.5L/min or so increases between aspiration pump 5 and condenser 6 in present embodiment to realize the accurate control of gas flow rate
Add reset valve 10, such as Fig. 6, so that reducing from the gas pressure that aspiration pump 5 enters condenser 6, until the gas that flowmeter 7 measures
Until body flow velocity is in 0.5 L/min or so, increases reset valve 10 before condenser 6, can control and enter condenser 6
The flow velocity of gas remains in 0.5 L/min or more, and one side condensation effect is more significant, the gas after being on the other hand condensed
Its detection accuracy can then be guaranteed by entering back into VOC detector 8, can also extend the service life of sensor in VOC detector 8.
In addition to this, present embodiment is identical with embodiment 2, is not repeated herein.
Embodiment 4:
Present embodiment is the further improvement of embodiment 1, is mainly theed improvement is that, in the embodiment 1, if
Some dust granules or small winged insect from the air inlet 105 of the outer sleeve 101 of gas sampling probe 1 fly into outer sleeve 101 with
Between inner sleeve 102, it will be possible to enter in inner sleeve 102 from the air inlet 105 of inner sleeve 102, and then can enter
Sensor is damaged in the sensor of VOC detector 8；And in the present embodiment, such as Fig. 7, also it is cased with not outside inner sleeve 102
The filter screen set 106 for steel material of becoming rusty, the filter screen set 106 is between outer sleeve 101 and inner sleeve 102, the setting of the filter screen set 106
It can effectively prevent dust granule or small winged insect from entering in inner sleeve 102 from the air inlet 105 of inner sleeve 102, avoid to gas
The damage of sensor in body detector；After a period of use, it if necessary to replacement filter screen set 106, then only needs to twist off spiral shell
Mother 103, outer sleeve 101, which is removed, to remove replacement for filter screen set 106, very convenient.
In addition to this, present embodiment is identical with embodiment 1, is not repeated herein.
Above embodiment is only to illustrate the technical ideas and features of the present invention, and its object is to allow be familiar with this skill
The people of art can understand the content of the utility model and implement accordingly, not limit the protection scope of the present invention.
It is all according to the spirit of the present invention substantially equivalent transformation that is done or modification, should all cover the protection scope of the utility model it
It is interior.
Claims (10)
1. a kind of volatile organic compounds detection device, which is characterized in that including gas sampling probe (1), two-way control valve
(2), the first dust filter unit (3), triple valve (4), aspiration pump (5), condenser (6), flowmeter (7) and VOC detector (8),
The gas sampling probe (1) is connected to by tracheae with the air inlet of the two-way control valve (2), the two-way control valve (2)
Gas outlet be connected to the inlet end of first dust filter unit (3), the outlet side of first dust filter unit (3) and institute
The air inlet connection of triple valve (4) is stated, the gas outlet of the triple valve (4) is connected to the inlet end of the aspiration pump (5), described
The outlet side of aspiration pump (5) is connected to the inlet end of the condenser (6), the outlet side of the condenser (6) and the flow
The inlet end connection of (7) is counted, the outlet side of the flowmeter (7) is connected to the VOC detector (8).
2. volatile organic compounds detection device according to claim 1, which is characterized in that the triple valve (4)
Commutation mouth is connected to by pipeline with the air inlet of the two-way control valve (2).
3. volatile organic compounds detection device according to claim 1, which is characterized in that it further include peristaltic pump (9),
The water inlet of the peristaltic pump (9) is connected to the discharge outlet of the condenser (6).
4. volatile organic compounds detection device according to claim 1, which is characterized in that further include reset valve
(10), the outlet side of the aspiration pump (5) is connected to by the reset valve (10) with the inlet end of the condenser (6).
5. volatile organic compounds detection device according to claim 1, which is characterized in that further include the second dust mistake
Filter (11), the outlet side of the condenser (6) are connected to the inlet end of second dust filter unit (11), second powder
The outlet side of dirt filter (11) is connected to the inlet end of the flowmeter (7).
6. volatile organic compounds detection device according to any one of claim 1 to 4, which is characterized in that described
Gas sampling probe (1) includes outer sleeve (101) and inner sleeve (102), one end and nut (103) of the inner sleeve (102)
It is threadedly coupled, the other end is threadedly coupled with the air inlet of the two-way control valve (2), and middle part is fixed with positioning sleeve (104)；It is described
Outer sleeve (101) is covered in the inner sleeve (102) outside, and the outer sleeve (101) is by the nut (103) and the positioning
Set (104) grips；Close to one end side wall of the positioning sleeve (104), in the inner sleeve on the outer sleeve (101)
(102) one end side wall on close to the nut (103) offers several air inlets (105).
7. volatile organic compounds detection device according to claim 6, which is characterized in that the gas sampling probe
It (1) further include filter screen set (106), the filter screen set (106) covers in the inner sleeve (102) lateral wall, and is located at the inner sleeve
Between cylinder (102) and the outer sleeve (101).
8. volatile organic compounds detection device according to claim 6, which is characterized in that the outer sleeve (101)
Both ends be respectively fitted on the outer wall of the nut (103) and the positioning sleeve (104).
9. volatile organic compounds detection device according to claim 8, which is characterized in that in the outer sleeve
(101) the first sealing ring (107) are cased between the outer wall of inner wall and the nut (103)；In the interior of the outer sleeve (101)
The second sealing ring (108) are cased between wall and the outer wall of the positioning sleeve (104).
10. volatile organic compounds detection device according to claim 7, which is characterized in that the outer sleeve
(101), the inner sleeve (102), the nut (103), the positioning sleeve (104) and the filter screen set (106) are not
Rust steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821363803.3U CN208752053U (en) | 2018-08-23 | 2018-08-23 | Volatile organic compounds detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821363803.3U CN208752053U (en) | 2018-08-23 | 2018-08-23 | Volatile organic compounds detection device |
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| Publication Number | Publication Date |
|---|---|
| CN208752053U true CN208752053U (en) | 2019-04-16 |
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ID=66080972
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| CN201821363803.3U Active CN208752053U (en) | 2018-08-23 | 2018-08-23 | Volatile organic compounds detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505218A (en) * | 2020-11-04 | 2021-03-16 | 赵志勇 | Organic waste gas burns on-line measuring device |
| CN112763658A (en) * | 2020-12-28 | 2021-05-07 | 深圳市安帕尔科技有限公司 | Gas detector and method for realizing sweeping and blowing of gas detector |
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2018
- 2018-08-23 CN CN201821363803.3U patent/CN208752053U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112505218A (en) * | 2020-11-04 | 2021-03-16 | 赵志勇 | Organic waste gas burns on-line measuring device |
| CN112763658A (en) * | 2020-12-28 | 2021-05-07 | 深圳市安帕尔科技有限公司 | Gas detector and method for realizing sweeping and blowing of gas detector |
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