CN214503051U - Air sampling header pipe - Google Patents
Air sampling header pipe Download PDFInfo
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- CN214503051U CN214503051U CN202022749502.8U CN202022749502U CN214503051U CN 214503051 U CN214503051 U CN 214503051U CN 202022749502 U CN202022749502 U CN 202022749502U CN 214503051 U CN214503051 U CN 214503051U
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Abstract
The utility model relates to an air sampling house steward, including the sampling section, the heating and heat preservation subassembly that can be provided with heat transfer outside the sampling section, the heating and heat preservation subassembly is connected by temperature controller control, temperature controller and terminal communication connection. The utility model discloses an air sampling house steward compares with prior art, can control by temperature change and heat to the sampling section of air sampling house steward to can be with relevant data transmission to terminal, in order to do benefit to real-time adjustment and control. In some embodiments, the configuration of the air sampling manifold facilitates leak detection itself and calibration and zeroing of analytical equipment. The air sampling manifold has a simple and highly sealed mounting structure.
Description
Technical Field
The utility model relates to a gaseous sampling device, concretely relates to air sampling house steward.
Background
In the current automatic detection network of the ambient air quality, the collection of the ambient air by a sampling main pipe is an initial important process link of quality monitoring. The sampling header pipe is generally vertically fixed in a room of a monitoring station, and a sampling head at the upper end of the sampling header pipe extends out of the room to sample outdoor air. The sampling main pipe is provided with a plurality of branch pipe sockets used for being connected with the sampling branch pipes, and air in the sampling main pipe enters the sampling branch pipes through the branch pipe sockets and then enters related detection instruments through the sampling branch pipes to detect specific indexes.
The existing sampling header pipe has some problems, such as the fact that the work of monitoring, collecting and recording various state parameters in the whole sampling process in real time cannot be achieved. For another example, when leak detection is performed on the sampling main pipe and zero adjustment is performed on the detection instrument, the operation steps are complex. Aiming at the station houses with different heights, the height of the sampling main pipe is difficult to adjust. The existing sampling header pipe also has the problem of complex assembly. Both of these problems affect the quality of the sample.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide an air sampling manifold that can achieve temperature control and monitoring.
In order to achieve the above object, the present invention provides an air sampling manifold of the following structure:
the sampling section is externally provided with a heating and heat-insulating assembly in a heat-transferring manner, the heating and heat-insulating assembly is in control connection with a temperature controller, and the temperature controller is in communication connection with the terminal.
In some embodiments, the sampling section has one or more manifold sockets therein that communicate with the interior of the sampling manifold.
In some embodiments, the air inlet of the air sampling main pipe and the branch pipe socket are arranged to be sealed by a choke plug or a plug, the air outlet of the air sampling main pipe is arranged to be detachably connected with a leak detection mechanism, the leak detection mechanism is provided with a switching passage with one end communicated with the air outlet and a valve for controlling the switching passage to be opened and closed, and the other end of the switching passage is communicated with the air suction mechanism.
In some embodiments, a pressure sensor is disposed within the air sampling manifold and is in communication with the terminal.
In some embodiments, the inner wall of the air sampling manifold is coated with a teflon coating.
In some embodiments, the air outlet of the air sampling header pipe is arranged to be detachably communicated with the induced draft fan, the induced draft fan is provided with a rotation speed sensor, the rotation speed sensor is used for detecting the rotation speed of the induced draft fan, and the rotation speed sensor is in communication connection with the terminal.
In some embodiments, the air sampling manifold is constructed by sequentially sealingly joining a plurality of tube segments that are segmented along the air flow direction.
In some embodiments, the sealing connection is a band seal.
In some embodiments, the air inlet of the air sampling manifold is configured to sealingly couple to an adapter for placing the air sampling manifold in switching communication with a standard airway.
In some embodiments, the bottom of the air sampling manifold has an elevated base.
The utility model discloses an air sampling house steward compares with prior art, can control by temperature change and heat to the sampling section of air sampling house steward to can be with relevant data transmission to terminal, in order to do benefit to real-time adjustment and control. In some embodiments, the configuration of the air sampling manifold facilitates leak detection itself and calibration and zeroing of the detection equipment. The air sampling manifold has a simple and highly sealed mounting structure.
Drawings
Fig. 1 is a schematic view of the sampling state of an air sampling manifold.
Fig. 2 is a schematic view of the calibration state of the air sampling manifold.
In the figure: 11. the heat insulation system comprises a first pipe section, 12, a second pipe section, 13, a third pipe section, 14, a fourth pipe section, 111, an air inlet, 131, a heating and heat insulation assembly, 132, a branch pipe socket, 141, an air outlet, 21, a standard gas pipeline, 22, an adapter, 3, a floor slab, 4, a rain hat, 5, an induced draft fan, 6, a pressure gauge, 7, a temperature controller and 8, and a terminal.
Detailed Description
The present invention will be further described with reference to the following examples and drawings.
The structure of the sampling header pipe in this embodiment is shown in fig. 1, a heating and heat-preserving component 131 is arranged outside the sampling section of the sampling header pipe in a heat-conducting manner, the heating and heat-preserving component 131 is controlled and connected by a temperature controller 7, and the temperature controller 7 is in communication connection with a terminal 8. Heating heat preservation subassembly 131 directly heats and keeps warm sampling section, not only can prevent that the air dew from tying the harmful effects who leads to the fact in detecting, assurance that can also be better is favorable to realizing the control to air temperature at branch pipe mouth position air temperature's stability. Real-time temperature data are transmitted to the terminal 8 through the temperature controller 7 and received from the terminal 8, real-time accurate temperature control of a sampling section is achieved, effective sampling and long-term monitoring of a sampling system are guaranteed, the terminal 8 can monitor and record received data, and statistical analysis of air quality monitoring data is achieved.
The terminal 8 refers to a computer or a computer system, and is a device for inputting data and displaying a calculation result.
An achievable structure of the heating and heat-insulating assembly 131 and the temperature controller 7 is that an electrical heating wire which is controlled and heated by a PID temperature controller is spirally wound on the sampling section, and the electrical heating wire and the sampling section are coated with heat-insulating media together. The electric heating wire is controlled by the PID temperature controller to be heated at 30-50 ℃, the electric heating wire is preferably an electric heating wire with a self-temperature limiting function, and the PID is provided with a serial interface and is connected with a computer and a terminal 8 for data communication.
The heat-transferable setting refers to that the heating and heat-insulating component 131 can transfer heat with the sampling section to heat the air in the sampling section, wherein one implementation mode is that the heating and heat-insulating component is directly attached to the surface of the sampling section, for example, when the heating and heat-insulating component adopts an electric heating wire, the heating and heat-insulating component can be directly attached to the surface of the sampling section, the more the electric heating wires are attached to the surface of the sampling section, the more the surface of the covered sampling section is, the more uniform the heating is, the material with good heat conduction effect can be selected as the material of the sampling section, for example, various metals and alloy pipes are adopted as the sampling section.
The sampling section has one or more manifold sockets 132 in communication with the interior of the sampling manifold. The branch pipe sockets 132 are used for inserting sampling branch pipes, air entering a sampling main pipe enters the sampling branch pipes from sampling joints in a sampling section, the quality of the air is detected and analyzed by the aid of the sampling branch pipes introduced into an analysis instrument, the quantity of the branch pipe sockets 132 in the sampling section is generally determined according to the quantity of the analysis instruments needing to detect indexes and communicated, the quantity of the branch pipe sockets 132 in the embodiment is 8, the branch pipe sockets are distributed along the vertical section, the quantity of the branch pipe sockets can be more or less, such as 5,6,7,9,10,11,12 and the like, the quantity of the branch pipe sockets does not need to be strictly consistent with the quantity of the analysis instruments needing to be communicated, more joints can be increased in flexibility, and the excessive joints can be sealed through blind heads. The branch pipe socket 132 is positioned on the sampling section, and the heating and heat-preserving component 131 on the sampling section heats the air in the sampling section, so that the air entering the sampling branch pipe can not be exposed to knots.
The air inlet 111 and the branch pipe socket 132 of the air sampling main pipe are set to be sealed by a choke plug or a plug, the air outlet 141 of the air sampling main pipe is set to be detachably connected with a leakage detection mechanism, a switching passage with one end communicated with the air outlet 141 and a valve for controlling the switching passage to be opened and closed are arranged in the leakage detection mechanism, the other end of the switching passage is communicated with an air pumping mechanism, a pressure sensor is arranged in the air sampling main pipe, and the pressure sensor is in communication connection with the terminal 8. Such a structural arrangement enables quick leak detection of the air sampling manifold. During leak detection, the air inlet 111 and the branch pipe socket 132 are only required to be sealed by a choke plug or a choke plug, the air outlet 141 is connected with the leak detection mechanism, air is exhausted outwards through the air exhaust mechanism, negative pressure is formed in the pipe body, and then the valve is closed. The pressure sensor sends pressure information to the terminal 8, and the pressure change is observed on the terminal 8, so that the problem that whether the air sampling main pipe leaks air or not can be detected.
The inner wall of the air sampling manifold is coated with a Teflon coating. Teflon coating to SO2、NO2、O3And no adsorption, no chemical reaction, no release of interfering substances, and the like of CO. The air quality can be accurately detected.
The air sampling manifold can be formed by sequentially connecting a plurality of pipe sections segmented along the air flow direction in a sealing manner or integrally. The air sampling main pipe of the embodiment is formed by hermetically connecting a first pipe section 11, a second pipe section 12, a third pipe section 13 and a fourth pipe section 14 which are vertically spliced, and a sampling section is positioned on the third pipe section 13. The length and inside diameter of each pipe section can be adjusted according to the height of the monitoring station, and the inside diameter of the main body of each pipe section in the embodiment is 48mm, and the length is 1 meter. In the case of a higher floor 3 at the monitoring station, it is also possible to add pipe sections or to use longer length pipe sections to increase the overall length of the air sampling manifold. One form of sealing connection between each pipe section is sealed by adopting a clamp type, a matched chuck is arranged at the end part connected with each pipe section, the two matched chucks are clamped and fixed by the same clamp, a sealing gasket can be filled between the chucks for improving the sealing performance, the air sampling main pipe is favorable for leading air to form laminar flow in the air sampling main pipe, especially the laminar flow in a sampling section, one structure which can be favorable for leading the air to form the laminar flow is the air sampling main pipe which is spliced to form a straight pipe type, and the inner wall of the air sampling main pipe is smooth as much as possible.
The air inlet 111 of the air sampling manifold is configured to sealingly engage with the adapter 22, and the adapter 22 is configured to connect the air sampling manifold in adapter communication with the standard air conduit 21. The adapter 22 may be a two-way or hose connection, and the air sampling manifold and the adapter 22 may be connected by a threaded connection with a sealing ring seal, or by a plug-in connection with a sealing ring seal, etc. The air inlet 111 of the air sampling main pipe is communicated with the standard air pipeline 21 through the adapter 22, and air in the standard air pipeline 21 is introduced into the air sampling main pipe and is communicated to an instrument through a sampling branch pipe to be zeroed.
When the air sampling header pipe is used for sampling, the induced draft fan 5 is communicated with the air outlet 141, the sampling branch pipes are arranged at the center of the air sampling header pipe inserted from the sampling interface, the rain-proof cap 4 is arranged on the air inlet at the upper part, the heating wire is started to heat through the PID temperature controller, the induced draft fan 5 is started to induce air, air enters from the air inlet and passes through the sampling section, the air is heated to 40-50 ℃ through the heating wire, and the air enters the sampling branch pipes and then reaches the analysis instrument to be detected and analyzed. When the zero setting of the detecting instrument is needed, referring to fig. 2, the air inlet 111 is communicated with the standard air pipeline 21 through the adapter 22 to perform zero setting. When the air sampling main pipe needs to be subjected to leak detection, the sampling branch pipe needs to be pulled out through the air sampling main pipe, the air inlet 111 and the branch pipe interface are sealed through the plug and the choke plug, the draught fan 5 is disassembled, the air inlet 111 is communicated with the leak detection mechanism, air is extracted through the air extraction mechanism, the pressure value received by the computer terminal 8 is observed, when the pressure value is reduced to-200 Pa, the valve is closed, the change condition of the pressure is observed through the terminal 8, whether the leak condition exists in the sampling main pipe is judged, and if the pressure in the pipe body is gradually recovered, the air leak condition exists.
The embodiments of the present invention are only used for illustration, and do not limit the scope of the claims, and other substantially equivalent alternatives that may be conceived by those skilled in the art are within the scope of the present invention.
Claims (7)
1. The air sampling header pipe comprises a sampling section and is characterized in that a heating and heat-preserving component is arranged outside the sampling section in a heat-transferring manner, the heating and heat-preserving component is controlled and connected by a temperature controller, the temperature controller is in communication connection with a terminal,
the sampling section is provided with one or more branch pipe sockets communicated with the interior of the sampling main pipe,
the air inlet and the branch pipe socket of the air sampling header pipe are set to be sealed by a choke plug or a plug, the air outlet of the air sampling header pipe is set to be detachably connected with the leakage detection mechanism, the leakage detection mechanism is internally provided with a switching passage with one end communicated with the air outlet and a valve for controlling the switching passage to be opened and closed, the other end of the switching passage is communicated with the air pumping mechanism, and the air sampling header pipe is internally provided with a pressure sensor which is in communication connection with the terminal.
2. The air sampling manifold of claim 1, wherein the interior wall of the air sampling manifold is coated with a teflon coating.
3. The air sampling manifold of claim 1, wherein the air outlet of the air sampling manifold is configured to be removably coupled to an induced draft fan, the induced draft fan having a speed sensor disposed thereon, the speed sensor configured to detect a speed of the induced draft fan, the speed sensor in communication with the terminal.
4. The air sampling manifold of claim 1, wherein the air sampling manifold is comprised of a plurality of tube segments that are sequentially sealingly connected in a segment along the air flow direction.
5. The air sampling manifold of claim 4, wherein said sealing connection is a clamp-type seal.
6. The air sampling manifold of claim 1, wherein the air inlet of the air sampling manifold is configured to sealingly engage an adapter for placing the air sampling manifold in switching communication with a standard air conduit.
7. The air sampling manifold of claim 1, wherein the bottom of the air sampling manifold has an elevated base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022749502.8U CN214503051U (en) | 2020-11-24 | 2020-11-24 | Air sampling header pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022749502.8U CN214503051U (en) | 2020-11-24 | 2020-11-24 | Air sampling header pipe |
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| CN214503051U true CN214503051U (en) | 2021-10-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526963A (en) * | 2022-01-17 | 2022-05-24 | 中国科学院合肥物质科学研究院 | Sampling device for fog drop spectrometer |
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2020
- 2020-11-24 CN CN202022749502.8U patent/CN214503051U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114526963A (en) * | 2022-01-17 | 2022-05-24 | 中国科学院合肥物质科学研究院 | Sampling device for fog drop spectrometer |
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