CN220084454U - Fixed pollution source waste gas VOCs dilutes heating sampling device - Google Patents
Fixed pollution source waste gas VOCs dilutes heating sampling device Download PDFInfo
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- CN220084454U CN220084454U CN202122569507.7U CN202122569507U CN220084454U CN 220084454 U CN220084454 U CN 220084454U CN 202122569507 U CN202122569507 U CN 202122569507U CN 220084454 U CN220084454 U CN 220084454U
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- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 51
- 238000010438 heat treatment Methods 0.000 title claims abstract description 46
- 238000005070 sampling Methods 0.000 title claims abstract description 42
- 239000002912 waste gas Substances 0.000 title claims abstract description 17
- 239000007789 gas Substances 0.000 claims abstract description 86
- 238000007865 diluting Methods 0.000 claims abstract description 24
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 13
- 239000010935 stainless steel Substances 0.000 claims abstract description 13
- 239000012895 dilution Substances 0.000 claims description 38
- 238000010790 dilution Methods 0.000 claims description 38
- 230000008676 import Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 14
- 239000000203 mixture Substances 0.000 description 12
- 238000012544 monitoring process Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 230000008901 benefit Effects 0.000 description 5
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- 238000001914 filtration Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 206010008479 Chest Pain Diseases 0.000 description 1
- 206010028813 Nausea Diseases 0.000 description 1
- 206010029350 Neurotoxicity Diseases 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 206010044221 Toxic encephalopathy Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003444 anaesthetic effect Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003113 dilution method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 206010016256 fatigue Diseases 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
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- 230000007135 neurotoxicity Effects 0.000 description 1
- 231100000228 neurotoxicity Toxicity 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a device for diluting, heating and sampling VOCs (volatile organic compounds) of waste gas with a fixed pollution source, which comprises a VOCs diluting, heating and sampling gun and a control host, wherein the VOCs diluting, heating and sampling gun comprises a gun rod and a gun head, one end of the gun head is in threaded connection with the gun rod, a replaceable stainless steel filter screen is arranged at the front end of the gun head, a central gas path and a diluting gas channel are arranged in the gun rod, heating resistors are fixedly arranged in the gun rod, a control module, a mixed gas pipe and a diluting gas pipe are fixedly arranged in the control host, mass flow meters are fixedly arranged on the mixed gas pipe and the diluting gas pipe, and an air extracting pump is arranged on the mixed gas pipe.
Description
Technical Field
The utility model relates to the technical field of environmental monitoring, in particular to a device for diluting, heating and sampling VOCs (volatile organic compounds) of waste gas with fixed pollution sources.
Background
Volatile organic compounds have photochemical activity, are important precursors for forming ozone pollution, and can cause photochemical smog under certain conditions, thereby affecting the respiratory tract function of people, causing symptoms such as chest distress, nausea, fatigue and the like, and simultaneously causing damage to plant systems. In addition, some volatile organic compounds are irritating to the skin and mucous membranes and have an anesthetic effect on the central nervous system. The irritation, neurotoxicity, cancerogenic action and special smell of the natural plant can cause various uncomfortable reactions of human bodies and can have great influence on the health of the human bodies. Therefore, in recent years, the ecological environment department strengthens the control of VOCs emission, and for the monitoring of VOCs emission enterprises, the ecological environment department has become the normal state of environment monitoring work, and in order to reduce the monitoring workload and improve the accuracy of monitoring data, a VOCs field adoption instrument with simple design, high automation degree and convenient carrying is urgently needed.
The fixed pollution source waste gas emitted by volatile organic pollutants ((Volatile Organic Compounds, VOCs)) generally has the problem of high concentration of the VOCs and high humidity. If the field instrument is used for direct detection, on one hand, the pipeline of the monitoring instrument is polluted, and on the other hand, the high humidity can cause the damage of the monitoring instrument; if an air bag or a stainless steel tank is used for sampling, water vapor condensation is easy to cause, the post-treatment difficulty is increased, and the detection result is inaccurate. The main functions of the existing pollution source VOCs sampling device are that sampling flow control, heating temperature control and filtering function are carried out on particles with particle sizes exceeding 50 mu m, the samples cannot be diluted automatically, high-concentration samples can pollute a pipeline of a detection instrument, after the high-humidity VOCs samples are collected and cooled in a container, water vapor can be condensed, and the collected samples must be heated and diluted again to improve detection accuracy, then the detection is carried out, so that the operation is complex, and a used heating box is large in size and not easy to carry. In order to solve the problems, the utility model aims to design a device for diluting, heating and sampling VOCs in waste gas with a fixed pollution source, and in the sampling process, the VOCs in the waste gas are diluted by nitrogen or zero gas, so that the concentration of the VOCs is reduced, the moisture content of the waste gas is reduced, the condensation of water vapor is prevented, the purpose of heating a sampling gun of the device is to prevent the waste gas from condensing before dilution, and the adsorption on a sampling gun tube path is reduced. The diluted gas can be directly detected on site, or can be contained in an air bag or a stainless steel tank and brought back to a laboratory for analysis.
Disclosure of Invention
The utility model aims to provide a device for diluting, heating and sampling VOCs (volatile organic compounds) of waste gas with fixed pollution sources, so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a fixed pollution source waste gas VOCs dilutes heating sampling device, includes VOCs dilutes heating sampling rifle and control host computer, VOCs dilutes heating sampling rifle includes rifle pole and rifle head, rifle head one end and rifle pole threaded connection, the rifle pole middle part is provided with central gas circuit along the axis, central gas circuit one side is provided with the dilution gas passageway, the rifle pole is at the dilution gas import of dilution gas passageway one end bottom fixedly connected with, this fixedly connected with gas mixture export at central gas circuit one end top, rifle pole top is at gas mixture export one side fixedly connected with handle, central gas circuit one end fixedly connected with end plate, fixedly mounted has control module in the control host computer, control host computer one side fixedly mounted has power plug, control host computer top one side fixedly mounted has parameter display screen, install gas mixture and dilution trachea in the control host computer, equal fixedly mounted has mass flowmeter on gas mixture and the dilution trachea, install the aspiration pump on the gas mixture.
As a further scheme of the utility model: the other end of the gun head is fixedly provided with a replaceable stainless steel filter screen.
As still further aspects of the utility model: the mesh density of the stainless steel filter screen is 500 meshes, and gaskets are fixedly arranged on two sides of the stainless steel filter screen.
As still further aspects of the utility model: the heating resistor is fixedly arranged outside the central gas circuit and the dilution gas channel in the gun rod, the thermocouple is fixedly arranged at the inner side of one end of the gun rod, the temperature control device is fixedly arranged at the outer side of the gun rod, and the temperature control device is electrically connected with the heating resistor and the thermocouple.
As still further aspects of the utility model: the temperature control device is provided with a temperature display screen and a setting key, and a power interface is fixedly arranged above the temperature control device on the gun rod.
As still further aspects of the utility model: the upper end of the gas mixture passes through the top of the control host and is connected with a gas mixture connecting hose through a quick plug, and the other end of the gas mixture connecting hose is connected with a gas mixture outlet through a quick plug.
As still further aspects of the utility model: the upper end of the dilution air pipe penetrates through the top of the control host machine and is connected with a dilution air connecting hose through a quick plug, and the other end of the dilution air connecting hose is connected with a dilution air inlet through a quick plug.
As still further aspects of the utility model: and the parameter display screen, the mass flowmeter and the air pump are electrically connected with the control module.
By adopting the technical scheme, the utility model has the following advantages:
1. compared with the traditional sampling method that samples are firstly collected into a container by a sampling gun, if the humidity is high, the condensation phenomenon can occur, then the samples are detected by using an oven for reheating, and if the concentration is high, the samples can be detected only after being diluted again.
2. Compared with the traditional sampling method, the on-site detection method has the advantages that the heating oven is required to be additionally carried when the on-site detection is carried out, the heating oven is large in size and is used for heating a container filled with VOCs, potential safety hazards exist, the number of on-site monitoring instruments is reduced, the on-site detection method is more convenient to carry, the on-site detection method is more suitable for on-site detection, and the on-site detection method is safer and more reliable.
3. Compared with the prior art of diluting high-concentration VOCs waste gas, the method has the advantages that the injection needle is used for sampling and diluting, the accuracy is low, the mass flowmeter is used for controlling the flow, the dilution is performed, the accuracy is high, and the detection result can be ensured to be more accurate.
In conclusion, the utility model has the advantages of saving labor cost, improving detection accuracy and the like, and has obvious economic and social benefits.
Drawings
Fig. 1 is a schematic diagram of a front view structure of a device for diluting, heating and sampling exhaust gas VOCs with fixed pollution sources.
Fig. 2 is a schematic diagram of a front cross-sectional structure of a device for diluting, heating and sampling exhaust gas VOCs with fixed pollution sources.
Fig. 3 is an enlarged schematic view of structure a in a fixed pollution source exhaust VOCs dilution heating sampling device.
In the figure: VOCs dilutes heating sampling rifle 1, control host computer 2, stock 3, rifle head 4, stainless steel filter screen 5, packing ring 6, central gas circuit 7, dilution gas passageway 8, dilution gas import 9, gas mixture export 10, handle 11, end plate 12, heating resistor 13, thermocouple 14, temperature control device 15, power interface 16, control module 17, power plug 18, parameter display 19, gas mixture 20, dilution gas pipe 21, gas mixture coupling hose 22, dilution gas coupling hose 23, mass flowmeter 24, aspiration pump 25.
Description of the embodiments
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
Referring to fig. 1 to 3, in the embodiment of the utility model, a device for diluting, heating and sampling exhaust gas with fixed pollution sources is disclosed, which comprises a VOCs diluting, heating and sampling gun 1 and a control host 2, the VOCs diluting, heating and sampling gun 1 comprises a gun rod 3 and a gun head 4, one end of the gun head 4 is in threaded connection with the gun rod 3, the gun head 4 is convenient to mount and dismount, a stainless steel filter screen 5 is fixedly arranged at the other end of the gun head 4, the mesh density of the stainless steel filter screen 5 is 500 meshes, the device is used for filtering particles with the particle size exceeding 50 mu m, gaskets 6 are fixedly arranged on both sides of the stainless steel filter screen 5, the tightness of the gun head 4 is increased, a central air path 7 is arranged in the middle of the gun rod 3 along an axis, a dilution air channel 8 is arranged on one side of the central air path 7, the dilution air channel 8 is convenient to directly dilute the VOCs in the sampling process, even if the humidity of exhaust gas is high, condensation phenomenon is not generated, the direct analysis can be performed, the pollution to a detecting instrument is reduced, the fixed pollution of the exhaust gas with the VOCs in a detecting operation step can be reduced, the on site is saved, the gun rod 3 is fixedly connected with the bottom of one end of the dilution air channel 8, the central air inlet 9 is used for filtering particles with the particle size exceeding 50 mu m, the particle size is also can be fixedly arranged on the other end of the hollow air channel, the hollow air channel is fixedly connected with the central air channel is provided with a heating and is suitable for carrying a heating and has a safety channel 7, and can be used for carrying a safety vent, and has a safety device, and can be used for carrying a safety, and a safety device, and can be used for carrying the safety. The thermocouple 14 is fixedly arranged on the inner side of one end of the gun rod 3, the temperature control device 15 is fixedly arranged on the outer side of the gun rod, the temperature control device 15 is electrically connected with the heating resistor 13 and the thermocouple 14, the heating temperature is convenient to control, the temperature control device 15 is provided with a temperature display screen and a setting key, and the gun rod 3 is fixedly provided with the power interface 16 above the temperature control device 15.
The control system is characterized in that a control module 17 is fixedly installed in the control host 2, a power plug 18 is fixedly installed on one side of the control host 2, a parameter display screen 19 is fixedly installed on one side of the top of the control host 2, a mixed gas pipe 20 and a dilution gas pipe 21 are installed in the control host 2, the upper end of the mixed gas pipe 20 penetrates through the top of the control host 2 and is connected with a mixed gas connecting hose 22 through a quick plug, the other end of the mixed gas connecting hose 22 is connected with a mixed gas outlet 10 through a quick plug, the upper end of the dilution gas pipe 21 penetrates through the top of the control host 2 and is connected with a dilution gas connecting hose 23 through a quick plug, the other end of the dilution gas connecting hose 23 is connected with a dilution gas inlet 9 through a quick plug, so that the device is convenient to carry, a mass flowmeter 24 is fixedly installed on the mixed gas pipe 20 and the dilution gas pipe 21, flow control is convenient to carry out on the VOCs waste gas dilution process, the dilution accuracy is high, the detection result is more accurate, a pump 25 is installed on the mixed gas pipe 20, the other end of the mixed gas pipe 20 penetrates through the control host 2 and is connected with the mixed gas container, the other end of the dilution gas pipe 21 penetrates through the control host 2 and is electrically connected with the parameter display screen 25, the parameter display screen 17 and the dilution gas flowmeter is electrically connected with the pump 17.
The working process of the utility model is as follows: the VOCs diluting and heating sampling gun 1 is started to generate negative pressure by the air pump 25, so that VOCs waste gas is sucked, then diluent gas is led into the diluent gas channel 8 to dilute the VOCs waste gas, the mixed gas is heated by the heating resistor 13 in the sampling process, and then the treated mixed gas is led into the mixed gas container under the action of the air pump 25, so that the on-site sampling of the VOCs in the pollution source waste gas can be completed.
Claims (8)
1. The utility model provides a fixed pollution source waste gas VOCs dilutes heating sampling device, including VOCs dilutes heating sampling rifle (1) and control host computer (2), a serial communication port, VOCs dilutes heating sampling rifle (1) include gun stock (3) and rifle head (4), rifle head (4) one end and gun stock (3) threaded connection, gun stock (3) middle part is provided with central gas circuit (7) along the axis, central gas circuit (7) one side is provided with dilution gas passageway (8), gun stock (3) are at dilution gas passageway (8) one end bottom fixedly connected with dilution gas import (9), should be fixedly connected with mixed gas outlet (10) at central gas circuit (7) one end top, gun stock (3) top is at mixed gas outlet (10) one side fixedly connected with handle (11), central gas circuit (7) one end fixedly connected with end plate (12), control host computer (2) internal fixation has control module (17), control host computer (2) one side fixedly installed power plug (18), control host computer (2) one side fixedly installed parameter display screen (19), control host computer (2) are installed in-side gas pipe (20) and mixed gas pipe (21) are all fixed with dilution mass flowmeter (24), an air pump (25) is arranged on the mixed air pipe (20).
2. The device for diluting, heating and sampling the exhaust gas VOCs with the fixed pollution sources according to claim 1, wherein a stainless steel filter screen (5) is arranged at the other end of the gun head (4).
3. The device for diluting, heating and sampling the exhaust gas VOCs with the fixed pollution sources according to claim 2 is characterized in that the mesh density of the stainless steel filter screen (5) is 500 meshes, and gaskets (6) are fixedly arranged on two sides of the stainless steel filter screen (5).
4. The device for diluting, heating and sampling the exhaust gas VOCs with the fixed pollution sources according to claim 1 is characterized in that a heating resistor (13) is fixedly arranged outside a central gas circuit (7) and a dilution gas channel (8) in the gun rod (3), a thermocouple (14) is fixedly arranged on the inner side of one end of the gun rod (3), a temperature control device (15) is fixedly arranged on the outer side of the gun rod, and the temperature control device (15) is electrically connected with the heating resistor (13) and the thermocouple (14).
5. The device for diluting, heating and sampling exhaust gas VOCs with fixed pollution sources according to claim 4, wherein a temperature display screen and a setting key are arranged on the temperature control device (15), and a power interface (16) is fixedly arranged above the temperature control device (15) on the gun rod (3).
6. The device for diluting, heating and sampling the exhaust gas VOCs with the fixed pollution sources according to claim 1, wherein the upper end of the gas mixing tube (20) penetrates through the top of the control host (2) and is connected with the gas mixing connection hose (22) through a quick plug, and the other end of the gas mixing connection hose (22) is connected with the gas mixing outlet (10) through a quick plug.
7. The device for diluting, heating and sampling the exhaust gas VOCs with the fixed pollution sources according to claim 1, wherein the upper end of the dilution air pipe (21) penetrates through the top of the control host (2) and is connected with the dilution air connecting hose (23) through a quick plug, and the other end of the dilution air connecting hose (23) is connected with the dilution air inlet (9) through a quick plug.
8. The device for diluting, heating and sampling the exhaust gas VOCs with the fixed pollution sources according to claim 1, wherein the parameter display screen (19), the mass flowmeter (24) and the air pump (25) are electrically connected with the control module (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122569507.7U CN220084454U (en) | 2021-10-25 | 2021-10-25 | Fixed pollution source waste gas VOCs dilutes heating sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122569507.7U CN220084454U (en) | 2021-10-25 | 2021-10-25 | Fixed pollution source waste gas VOCs dilutes heating sampling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220084454U true CN220084454U (en) | 2023-11-24 |
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ID=88827649
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122569507.7U Active CN220084454U (en) | 2021-10-25 | 2021-10-25 | Fixed pollution source waste gas VOCs dilutes heating sampling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220084454U (en) |
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2021
- 2021-10-25 CN CN202122569507.7U patent/CN220084454U/en active Active
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