CN215492660U - Automatic sampling system for environmental gaseous substances - Google Patents
Automatic sampling system for environmental gaseous substances Download PDFInfo
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- CN215492660U CN215492660U CN202121926275.XU CN202121926275U CN215492660U CN 215492660 U CN215492660 U CN 215492660U CN 202121926275 U CN202121926275 U CN 202121926275U CN 215492660 U CN215492660 U CN 215492660U
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Abstract
The utility model relates to the technical field of environmental monitoring, in particular to an automatic sampling system for environmental gaseous substances, which comprises: the controller controls the work of the sampling fan through the pressure flow information, adjusts the power of the sampling fan, ensures that the gas in the channel is in a flowing state, has stable flow and can deal with increasingly complex atmospheric pollution conditions.
Description
Technical Field
The utility model relates to the technical field of environmental monitoring, in particular to an automatic sampling system for environmental gaseous substances.
Background
At present, with the development of industrial modernization, environmental problems are increasingly prominent, and people pay more attention to environmental changes. Increasingly complex atmospheric pollution conditions put higher demands on traditional environmental monitoring, wherein the collection and instrumental detection of outside air are indispensable technical means in atmospheric monitoring.
Gaseous pollutants in the atmosphere has some active substances of chemical characteristics, and higher requirements are put forward to gas sampling device, however, gas sampling system in the existing market has the problems of untimely air replacement speed, fan attenuation, substance loss, impurity interference and the like, and the detection accuracy is seriously influenced.
In view of the above problems, the applicant has actively researched and innovated based on the practical experience and professional knowledge of many years of engineering application of such products and with the application of theory, in order to create an automatic sampling system for environmental gases, which is more practical.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: an automatic sampling system for environmental gases is provided to more accurately measure the contents of substances in the atmosphere by reducing the air flow rate, substance loss and the influence of impurities.
In order to achieve the purpose, the utility model adopts the technical scheme that: an ambient gas automatic sampling system, comprising: a probe rod, an air inlet filtering component, a dust deposition device, a sampling fan, a temperature sensor, a humidity sensor, a pressure flow monitoring device and a controller, wherein,
the probe rod comprises an outer tube and an inner tube, a heating device is arranged between the outer tube and the inner tube, a channel for gas to flow is formed in the inner tube, and a manifold joint is arranged at the lower half part of the probe rod and is used for being connected with an instrument for analyzing gas;
the air inlet filter assembly is arranged at the top of the probe rod and is used for preventing rainwater and large particulate matters from entering the channel;
the dust deposition device is arranged at the bottom of the probe rod and is used for collecting particulate matters in the gas;
the sampling fan is arranged at the lower half part of the probe rod, is lower than the manifold joint in installation height and is used for pumping outside gas into the channel;
the temperature sensor is arranged in the inner pipe and used for monitoring the temperature of the gas in the channel;
the humidity sensor is arranged in the inner pipe and used for monitoring the humidity of the gas in the channel;
the pressure and flow monitoring device is arranged in the inner pipe and is used for monitoring the pressure and the flow of the gas in the channel;
the controller respectively with heating device sampling fan temperature sensor humidity transducer pressure flow monitoring devices electricity is connected, the controller is gathered temperature sensor humidity transducer with pressure flow monitoring devices's the signal of telecommunication, and control heating device with sampling fan work.
Further, the filter component admits air includes rain-proof cover and filter core, it installs to filter the core the inside of rain-proof cover, rain-proof cover bottom is provided with the opening that supplies external atmosphere to get into.
Further, the air inlet filter assembly is connected with the probe rod through a clamping hoop.
Furthermore, the dust deposition device is a container with an opening at the top, an external thread is arranged on the side wall of the top of the container, a matched internal thread is arranged at the bottom of the probe rod, and the dust deposition device is connected with the bottom of the probe rod through a thread.
Furthermore, the filter element adopts a stainless steel wire filter screen or a polytetrafluoroethylene filter membrane.
Furthermore, the heating device is a resistance wire, and a heat insulation material is also wound around the resistance wire.
Further, still the cover is equipped with fixed sleeve subassembly on the probe rod, fixed sleeve subassembly includes sleeve pipe and threaded connection the adjusting nut of sleeve pipe bottom, sleeve pipe middle section outer lane is provided with the spacing ring, adjusting nut with between the spacing ring still be provided with the gasket on the sleeve pipe.
Further, the fixing sleeve assembly is fixedly connected to the probe rod through a locking nut.
Further, a particle filtering membrane is arranged at the end head of the manifold joint.
The utility model has the beneficial effects that: in the utility model, the temperature of the sample gas is monitored by the arranged temperature sensor, the humidity of the sample gas is monitored by the arranged humidity sensor, the change of the pressure flow in the channel is monitored in real time by the arranged pressure flow monitoring device, and by establishing the relationship between the controller and the temperature sensor, the humidity sensor and the pressure flow detection device, thereby the temperature information, humidity information and the pressure flow information that will gather feed back to the controller, and the controller controls heating device's work through temperature information, makes the temperature of inner tube keep invariable, further reduces the sample and adsorbs in the passageway, and the pollutant loss that greatly reduces, the controller controls the work of sampling fan through pressure flow information, adjusts the power of sampling fan, guarantees that the interior gas of passageway is in the mobile state, can accomplish 24 incessant stable bleed states.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an automatic sampling system for environmental gases according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of an automatic ambient gas sampling system according to an embodiment of the present invention;
FIG. 3 is a schematic view of a retaining sleeve assembly according to an embodiment of the present invention.
Reference numerals: 1. a probe rod; 2. an intake air filter assembly; 3. a dust deposition device; 4. a sampling fan; 5. a temperature sensor; 6. a humidity sensor; 7. a pressure flow monitoring device; 8. a controller; 9. a manifold junction; 10. a sleeve; 11. adjusting the nut; 12. a limiting ring; 13. a gasket; 14. and locking the nut.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
An automatic ambient gas sampling system as shown in fig. 1, comprising: a probe rod 1, an air inlet filtering component 2, an ash deposition device 3, a sampling fan 4, a temperature sensor 5, a humidity sensor 6, a pressure flow monitoring device 7 and a controller 8, wherein,
the probe rod 1 comprises an outer tube and an inner tube, a heating device is arranged between the outer tube and the inner tube, a channel for gas to flow is formed in the inner tube, a manifold joint 9 is arranged at the lower half part of the probe rod 1, and the manifold joint 9 is used for connecting an instrument for analyzing gas;
the air inlet filter assembly 2 is arranged at the top of the probe rod 1 and is used for preventing rainwater and large-particle substances from entering the channel;
the dust deposition device 3 is arranged at the bottom of the probe rod 1 and is used for collecting particulate matters in the gas;
the sampling fan 4 is arranged at the lower half part of the probe rod 1, is lower than the manifold joint 9 in installation height and is used for pumping outside gas into the channel;
the temperature sensor 5 is arranged in the inner pipe and used for monitoring the temperature of the gas in the channel;
the humidity sensor 6 is arranged in the inner pipe and used for monitoring the humidity of the gas in the channel;
the pressure and flow monitoring device 7 is arranged in the inner pipe and used for monitoring the pressure and flow of gas in the channel;
the controller 8 is respectively electrically connected with the heating device, the sampling fan 4, the temperature sensor 5, the humidity sensor 6 and the pressure flow monitoring device 7, the controller 8 collects electric signals of the temperature sensor 5, the humidity sensor 6 and the pressure flow monitoring device 7, and controls the heating device and the sampling fan 4 to work.
The utility model provides an automatic sampling system for environmental gaseous substances, which can be placed outdoors or used on a vehicle, when in use, outdoor or vehicle-mounted sample gas is pumped into a channel in a probe rod 1 through a sampling fan 4, the probe rod 1 adopts the structure of an outer pipe and an inner pipe, the outer pipe adopts stainless steel, the inner pipe adopts stainless steel or polytetrafluoroethylene which is subjected to inerting treatment, the adhesion of the sample gas to the inner wall of the inner pipe during the circulation of the inner pipe is greatly reduced, so that the measuring effect is influenced, then the sample gas enters each gas analysis instrument through a manifold joint 9 to be monitored, wherein the sample gas firstly passes through an air inlet filtering component 2, at least a gas filtering structure is arranged in the air inlet filtering component 2, large granular substances in the sample gas are preliminarily filtered, then the sample gas flows downwards, and the temperature of the sample gas is monitored through a temperature sensor 5, the humidity of the sample gas is monitored by the humidity sensor 6, the change of the pressure flow in the channel is monitored in real time by the pressure flow monitoring device 7, the relationship between the controller 8 and the temperature sensor 5, the humidity sensor 6 and the pressure flow detection device 7 is established, so that the collected temperature information, humidity information and pressure flow information are fed back to the controller 8, the controller 8 controls the work of the heating device by the temperature information, the temperature of the inner pipe is kept constant, the adsorption of the sample in the channel is further reduced, the pollutant loss is greatly reduced, meanwhile, the controller 8 can also control the work of the heating device according to the humidity information, the heating device is always in a reasonable humidity range, the controller 8 controls the work of the sampling fan 4 by the pressure flow information, the power of the sampling fan 4 is adjusted, and the gas in the channel is ensured to be in a flowing state, can accomplish 24 hours incessant stable bleed state, still increased the gaseous residence time setting of sample in the controller 8, sampling fan 4 can be according to the gaseous residence time automatically regulated sampling fan rotational speed of sample that sets up, stops through opening of pressure flow information control sampling fan to guarantee that the gaseous certain time of can detaining in the passageway of sample.
In order to prevent rainwater and large granule material from entering into the passageway, admit air filter assembly 2 and include rain-proof cover and filter core, filter core installs in the inside of rain-proof cover, and rain-proof cover bottom is provided with the opening that supplies external atmosphere to get into, and the sample is gaseous to enter into rain-proof cover in from the bottom opening, and then circulates in the passageway.
In order to conveniently dismantle and filter air intake assembly 2, air intake filter assembly 2 and probe rod 1 are connected through the clamp, and air intake filter assembly 2 is conveniently taken down, changes inside filter core.
In order to facilitate cleaning of the dust deposition device 3, the dust deposition device 3 is a container with an open top, an external thread is arranged on the side wall of the top of the container, a matched internal thread is arranged at the bottom of the probe rod 1, the dust deposition device 3 is in threaded connection with the bottom of the probe rod 1, the dust deposition device 3 can be conveniently taken down by adopting a threaded connection mode, and after the dust deposition device 3 is cleaned, the dust deposition device 3 and the probe rod 1 are also convenient to install.
More specifically, filter core adopts stainless steel wire filter screen or polytetrafluoroethylene filter membrane, can select for use suitable filter core according to the actual demand difference, and both filter effects are all showing.
Heating device is the resistance wire, and in order to reduce the heat and scatter and disappear, still twine insulation material around the resistance wire, through set up the resistance wire between inner tube and outer tube, the resistance wire can homodisperse, and the heating region is big, and is evenly stable, reduces the heat through winding insulation material and gives off.
In order to fix the probe rod 1 with the top of the carriage and further facilitate vehicle-mounted use, a fixed sleeve assembly is further sleeved on the probe rod 1 and comprises a sleeve 10 and an adjusting nut 11 in the bottom of the sleeve 10 in a threaded connection mode, a limiting ring 12 is arranged on the outer ring of the middle section of the sleeve 10, a gasket 13 is further arranged on the sleeve 10 between the adjusting nut 11 and the limiting ring 12, when the fixed sleeve assembly is fixed with the top of the carriage, firstly, a hole for the probe rod 1 to extend out is formed in the top of the carriage, the limiting ring 12 and the gasket 13 are respectively arranged on the upper side and the lower side of an opening in the top of the carriage, the gasket 13 and the limiting ring 12 are clamped tightly by upward screwing the adjusting nut 11, and the gasket 13 and the limiting ring 12 are convenient to butt joint in order to increase the contact area with a skin on the top of the carriage.
In order to adjust the position of the fixing sleeve assembly on the probe rod 1 conveniently, the fixing sleeve assembly is fixedly connected to the probe rod 1 through a locking nut 14, the top of the sleeve 10 is fixedly connected with the locking nut 14 through threads, the height of the probe rod 1 extending out of the top of the carriage is adjusted by loosening the locking nut 14, and then the fixing sleeve assembly is fixed to any position of the probe rod 1 by tightening the locking nut 14.
In order to further filter micro particles in the sample gas, a particle filtering membrane is arranged at the end of the manifold joint 9, and the particle filtering membrane is preferably a polytetrafluoroethylene filtering membrane and has strong filtering performance.
It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (9)
1. An automatic sampling system for environmental gases, comprising: a probe rod (1), an air inlet filtering component (2), a dust deposition device (3), a sampling fan (4), a temperature sensor (5), a humidity sensor (6), a pressure flow monitoring device (7) and a controller (8), wherein,
the gas analyzer is characterized in that the probe rod (1) comprises an outer tube and an inner tube, a heating device is arranged between the outer tube and the inner tube, a channel for gas to flow is formed in the inner tube, a manifold joint (9) is arranged at the lower half part of the probe rod (1), and the manifold joint (9) is used for being connected with an instrument for analyzing gas;
the air inlet filter assembly (2) is arranged at the top of the probe rod (1);
the dust deposition device (3) is arranged at the bottom of the probe rod (1);
the sampling fan (4) is arranged at the lower half part of the probe rod (1) and the installation height of the sampling fan is lower than that of the manifold joint (9);
the temperature sensor (5) is arranged in the inner pipe;
the humidity sensor (6) is arranged in the inner pipe;
the pressure flow monitoring device (7) is arranged in the inner pipe;
the controller (8) respectively with heating device sampling fan (4) temperature sensor (5) humidity transducer (6) pressure flow monitoring devices (7) electricity is connected, controller (8) are gathered temperature sensor (5) humidity transducer (6) with the signal of telecommunication of pressure flow monitoring devices (7), and control heating device with sampling fan (4) work.
2. The automatic sampling system of environmental gaseous substances according to claim 1, characterized in that air intake filter assembly (2) includes a rain cover and a filter element, the filter element is installed in the interior of the rain cover, and an opening for external atmosphere to enter is arranged at the bottom of the rain cover.
3. Automatic ambient gas sampling system according to claim 1, characterized in that said intake filter assembly (2) and said probe (1) are connected by means of a clamp.
4. The automatic sampling system of environmental gases according to claim 1, characterized in that said dust-depositing device (3) is a container with an open top, said dust-depositing device (3) being screwed to the bottom of said probe rod (1).
5. The automatic sampling system of environmental gases as claimed in claim 2, wherein the filter core is stainless steel wire filter or teflon filter.
6. The automatic sampling system of environmental gases according to claim 1, wherein the heating device is a resistance wire, and a thermal insulation material is further wound around the resistance wire.
7. The automatic sampling system for environmental gaseous substances according to claim 1, wherein a fixing sleeve assembly is further sleeved on the probe rod (1), the fixing sleeve assembly comprises a sleeve (10) and an adjusting nut (11) in threaded connection with the bottom of the sleeve (10), a limiting ring (12) is arranged on the outer ring of the middle section of the sleeve (10), and a gasket (13) is further arranged on the sleeve (10) between the adjusting nut (11) and the limiting ring (12).
8. Automatic ambient gas sampling system according to claim 7, characterized in that said set sleeve assembly is fixedly connected to said probe rod (1) by means of a locking nut (14).
9. Automatic sampling system of environmental gases according to claim 1, characterized in that at the end of said manifold joint (9) there is provided a particulate filtering membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121926275.XU CN215492660U (en) | 2021-08-17 | 2021-08-17 | Automatic sampling system for environmental gaseous substances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121926275.XU CN215492660U (en) | 2021-08-17 | 2021-08-17 | Automatic sampling system for environmental gaseous substances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215492660U true CN215492660U (en) | 2022-01-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121926275.XU Active CN215492660U (en) | 2021-08-17 | 2021-08-17 | Automatic sampling system for environmental gaseous substances |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215492660U (en) |
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2021
- 2021-08-17 CN CN202121926275.XU patent/CN215492660U/en active Active
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