CN213275050U - Sampling system of smoke sampler - Google Patents
Sampling system of smoke sampler Download PDFInfo
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- CN213275050U CN213275050U CN202022155056.8U CN202022155056U CN213275050U CN 213275050 U CN213275050 U CN 213275050U CN 202022155056 U CN202022155056 U CN 202022155056U CN 213275050 U CN213275050 U CN 213275050U
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Abstract
The utility model provides a smoke and dust sample thief sampling system belongs to smoke and dust check out test set technical field, be in including sampling pipeline, the setting that is used for sampling the smoke and dust be used for on the sampling pipeline extracting the smoke and dust vacuum generator and with vacuum generator's vacuum generation end is the air supply pipeline that communicates mutually, sampling pipeline and vacuum generator all are located high-temperature region. The utility model provides a smoke and dust sample thief sampling system provides the power of extraction for the sampling pipe way through using vacuum generator, and vacuum generator is the structure, and high temperature resistance can be better under the state that can be in the high temperature for a long time, consequently adopts vacuum generator to heat the collection pipeline including vacuum generator for the power supply, prevents that the vapor in the sampling pipe way extraction flue gas from taking place to condense because of the temperature reduces, has improved the accuracy that the smoke and dust detected.
Description
Technical Field
The utility model belongs to the technical field of smoke and dust check out test set, more specifically says, relates to a smoke and dust sample thief sampling system.
Background
The smoke has large harm, the particle with the particle size smaller than 2.5um can directly reach the human lung to enter the alveolus and possibly enter the blood to lead to the whole body, and the particle is rich in a large amount of toxic heavy metals and harmful organic matters and adheres to bacteria and viruses; in addition, acid rain is formed by combining with rainwater, has negative effects on atmospheric chemical components, and can also cause harm to crops. At present, the on-line monitoring of smoke dust is realized by adopting a back scattering method to measure most pollution sources on site, and the smoke dust is easily influenced by moisture and has low accuracy. The national comparison method is characterized in that manual sampling is carried out, comparison with monitoring equipment is carried out in a laboratory weighing method, the method is effective and nationally approved, the sampling power of the detecting equipment is mostly a vacuum pump, but the vacuum pump generally cannot resist high temperature due to more internal electronic elements and precise parts, so that high-temperature smoke can be condensed by water vapor in the smoke when passing through the vacuum pump, and the constant-speed sampling effect and the smoke detection accuracy can be influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a smoke and dust sample thief sampling system aims at solving the poor and low problem of detection accuracy of effect of the sampling that smoke and dust sampling equipment exists among the prior art.
In order to achieve the above object, the utility model adopts the following technical scheme: the sampling system comprises a sampling pipeline for sampling smoke dust, a vacuum generator arranged on the sampling pipeline and used for extracting the smoke dust, and an air source pipeline communicated with the vacuum generator, wherein the sampling pipeline and the vacuum generator are both positioned in a high-temperature area.
As another embodiment of the application, the sampling system of the smoke sampler further comprises a flow rate control module for controlling the pressure of the air source pipeline.
As another embodiment of the application, the flow rate control module comprises a flow monitoring unit arranged on the sampling pipeline, a pressure adjusting mechanism arranged on the air source pipeline, and a controller electrically connected with the flow monitoring unit and the pressure adjusting unit.
As another embodiment of the present application, the flow rate control module further includes a flow rate detection unit electrically connected to the controller for detecting a flow rate of flue gas in the flue.
As another embodiment of this application, pressure adjustment mechanism is including setting up be used for adjusting the pressure regulating valve of air supply pipeline internal pressure on the air supply pipeline and with controller electric connection just is used for rotating the power pack of pressure regulating valve regulation end.
As another embodiment of the application, the sampling pipeline comprises a filtering and sampling unit for collecting smoke dust and a first pipeline for communicating the filtering and sampling unit with the vacuum generator, and the flow monitoring unit is positioned between the vacuum generator and the filtering and sampling unit.
As another embodiment of this application, flow monitoring unit includes inside cavity and both ends respectively with the structure of first pipeline intercommunication, set up and be in inside orifice plate of structure and two detection probe that are used for detecting the pressure differential of orifice plate both sides respectively.
As another embodiment of the present application, the gas source pipeline includes a second pipeline for communicating a high pressure gas source with the vacuum generator, and the pressure adjusting unit is disposed on the second pipeline and between the high pressure gas source and the vacuum generator.
As another embodiment of the present application, a pressure detecting unit for detecting pressure is further disposed between the pressure adjusting unit and the vacuum generator.
The utility model provides a smoke and dust sample thief sampling system's beneficial effect lies in: compared with the prior art, the vacuum generator is arranged on the sampling pipeline to provide suction force for the sampling pipeline to extract smoke dust, and the air source pipeline communicated with the vacuum generating end of the vacuum generator is also arranged. The utility model discloses smoke and dust sample thief sampling system provides the power of extraction for the sampling pipeline through using vacuum generator, and vacuum generator is the structure, and high temperature resistance can be better under the state of high temperature for a long time, consequently adopts vacuum generator to heat the collection pipeline including vacuum generator for the power supply, prevents that the vapor in the sampling pipeline extraction flue gas from taking place to condense because of the temperature reduces, has improved the accuracy that the smoke and dust detected.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a sampling system of a smoke sampler provided in an embodiment of the present invention.
In the figure: 1. a flow monitoring unit; 2. a vacuum generator; 3. a pressure detection sheet; 4. a pressure regulating valve; 5. a high pressure gas source; 6. a power unit; 7. a controller; 8. a flow velocity detection unit; 9. and filtering the sampling unit.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a sampling system of a smoke sampler according to the present invention will now be described. The smoke dust sampler sampling system comprises a sampling pipeline for sampling smoke dust, a vacuum generator 2 arranged on the sampling pipeline and used for extracting the smoke dust, and an air source pipeline communicated with a vacuum generating end of the vacuum generator 2, wherein the sampling pipeline and the vacuum generator 2 are both positioned in a high-temperature area, and the air source pipeline is positioned in a normal-temperature area.
Compared with the prior art, the sampling system of the smoke dust sampler provided by the embodiment provides suction force for the sampling pipeline to extract smoke dust by arranging the vacuum generator 2 on the sampling pipeline, and is also provided with an air source pipeline communicated with the vacuum generating end of the vacuum generator 2. The utility model discloses smoke and dust sample thief sampling system provides the power of extraction for the sampling pipe way through using vacuum generator 2, and vacuum generator 2 is the structure, and high temperature resistance can be better under the state that can be in the high temperature for a long time, consequently adopts vacuum generator 2 to heat the collection pipeline including vacuum generator 2 for the power supply, prevents that the vapor in the sampling pipe way extraction flue gas from taking place to condense because of the temperature reduces, has improved the accuracy that the smoke and dust detected.
In this embodiment, the vacuum generator 2 includes a structural member main body having a hollow interior, three ports provided on the structural member main body, and a nozzle and a gas receiving chamber provided inside the structural member main body, wherein the nozzle communicates with one port, and the gas receiving chamber communicates with one port. When high-pressure gas enters a port communicated with the nozzle, negative pressure is formed between the nozzle and the gas collecting body according to the Venturi throat effect, so that the gas in the sampling port is extracted, and the gas is mixed and then flows out of the port communicated with the gas collecting body. The main body of the structural part is preferably made of stainless steel, and the working pressure of the main body is 0.1-0.4MPa, so that the vacuum generator 2 is more resistant to high temperature.
As a specific implementation of the sampling system of the smoke sampler, please refer to fig. 1 together, the sampling system of the smoke sampler further includes a flow rate control module for controlling the pressure of the air source pipeline. The setting of flow rate control module can come to adjust the pressure of air supply pipeline according to the velocity of flow of smoke and dust in the flue, and the pressure of air supply gets into vacuum generator 2 through the control, adjusts the velocity of flow of smoke and dust in the sampling pipeline, and the velocity of flow of the gaseous velocity of flow of smoke and dust in the flue of the sampling port department of sampling pipeline reaches unanimity to realize the constant speed sampling, make the sampling of smoke and dust sample thief sampling system more accurate.
As a specific implementation manner of the sampling system of the smoke sampler, please refer to fig. 1, the flow rate control module includes the flow monitoring unit 1 disposed on the sampling pipeline, the pressure adjusting mechanism disposed on the air source pipeline, and the controller 7 electrically connected to the flow monitoring unit 1 and the pressure adjusting unit. When vacuum generator 2 works and extracts the flue gas through the sampling pipeline, detect the flue gas flow in the sampling pipeline through flow monitoring unit 1, then controller 7 compares the numerical value that detects with the flow of flue gas in the flue (can real-time supervision also can acquire in advance), then controller 7 adjusts the pressure of air supply pipeline according to the result of comparing again, finally change the flow of flue gas in the sampling pipeline through the pressure that changes vacuum generator 2 department, make the velocity of flow of sampling port reach the unanimity with the velocity of flow of smoke and dust gas in the flue, thereby realize the constant speed sampling, make smoke and dust sampler sampling system's sampling more accurate.
As a specific implementation manner of the sampling system of the smoke sampler, please refer to fig. 1, the flow rate control module further includes a flow rate detection unit 8 electrically connected to the controller 7 for detecting the flow rate of the smoke in the flue. The flow velocity detection unit 8 is composed of a flow velocity sensing structure and a flow velocity detection device. The velocity of flow response structure can be for the pitot tube replacement, can acquire the velocity of flow of smoke and dust gas in the flue through using velocity of flow detecting element 8, and send the numerical value that velocity of flow detecting element 8 detected to controller 7, the gas pressure who gets into vacuum generator 2 is adjusted to the pressure regulating unit on through controller 7 control air supply pipeline, thereby the velocity of flow of control collection pipeline extraction flue gas, and finally make the velocity of flow of sampling port reach unanimously with the velocity of flow of smoke and dust gas in the flue, thereby realize the constant speed sampling, make smoke and dust sampler sampling system's sampling more accurate.
As a specific implementation manner of the sampling system of the smoke sampler, please refer to fig. 1, the pressure adjusting mechanism includes a pressure regulating valve 4 disposed on the air source pipeline for adjusting the pressure in the air source pipeline, and a power unit 6 electrically connected to the controller 7 and disposed to rotate the pressure regulating valve 4 to adjust the end.
As a specific implementation manner of the sampling system of the smoke sampler, please refer to fig. 1, the sampling pipeline includes the filtering and sampling unit 9 for collecting smoke and dust and the first pipeline for communicating the filtering and sampling unit 9 with the vacuum generator 2, and the flow monitoring unit 1 is located between the vacuum generator 2 and the filtering and sampling unit 9. The filtering and sampling unit 9 preferably selects a standard sampling head, and a filter membrane for filtering smoke is arranged in the standard sampling head, so that the collection of substances in the smoke is facilitated. And the flow monitoring unit 1 is arranged between the vacuum generator 2 and the filtering and sampling unit 9, so that the flow monitoring on the first pipeline is more accurate.
As a specific implementation manner of the sampling system of the smoke sampler, please refer to fig. 1, the flow monitoring unit 1 includes the structure that the inside cavity and both ends communicate with the first pipeline respectively, the pore plate that sets up inside the structure, and two detecting probes that are used for detecting the pressure difference between the two sides of the pore plate respectively. The detection probe is electrically connected with the controller 7, and the detection probe is connected with the structural part through a pipeline so that the detection probe is far away from a high-temperature area. The structural part is preferably made of stainless steel, and the stainless steel has high strength, high temperature resistance and corrosion resistance; the flow detection device adopts a differential pressure detection technology, reads the differential pressure of two pressure sensing channels of the flow sensing structure through a detection probe, and calculates the flow of the collected smoke gas by sampling and fitting a data algorithm. The flow monitoring unit 1 can detect more accurately in a high-temperature environment.
As a specific implementation manner of the sampling system of the smoke sampler, please refer to fig. 1, the air source pipeline includes a second pipeline for communicating the high pressure air source 5 with the vacuum generator 2, and the pressure adjusting unit is disposed on the second pipeline and between the high pressure air source 5 and the vacuum generator 2. High pressurized air source 5 is clean oil-free air source, can make vacuum generator 2 produce the draft that lasts stable for vacuum generator 2 supplies air through high pressurized air source 5 lasts to pressure adjusting unit's setting can conveniently be adjusted the pressure that gets into vacuum generator 2, makes vacuum generator 2's use simple and convenient more.
As a specific implementation manner of the sampling system of the smoke sampler provided in the present invention, please refer to fig. 1, a pressure detecting unit 3 for detecting pressure is further disposed between the pressure adjusting unit and the vacuum generator 2. The pressure detection unit 3 can detect the pressure in the air source pipeline, can also visually display the pressure in the air source pipeline, and is convenient to adjust the pressure in the air source pipeline. The jet flow pressure value can be automatically adjusted according to the requirement, so that the air extraction quantity and the air extraction capacity of the vacuum generator 2 can be changed.
As a specific implementation manner of the sampling system of the smoke sampler, please refer to fig. 1, a sampling system of the smoke sampler, including flow monitoring unit 1, vacuum generator 2, pressure detection unit 3, pressure regulating valve 4, high-pressure air source 5, power unit 6, controller 7, flow velocity detection unit 8 and filtration sampling unit 9. The filtering and sampling unit 9, the induction part in the flow monitoring unit 1 and the vacuum generator 2 are positioned in a high-temperature area, all devices in the high-temperature area are pure-structure devices and are high-temperature resistant, and the phenomenon of condensation can not occur under the condition of high temperature heating with flue gas; the inspection parts of the pressure detection unit 3, the pressure regulating valve 4, the high-pressure air source 5, the power unit 6, the controller 7 and the flow velocity detection unit 8 are in a normal temperature area, all devices in the normal temperature area are electric or control devices, are not high-temperature resistant and mainly provide control and power sources for a system; the high-pressure air source 5 generates high-pressure oil-free compressed air, the pressure of the pressure regulating valve 4 is regulated through the power unit 6, the high-pressure oil-free compressed air enters the jet end of the vacuum generator 2, negative pressure is generated between the nozzle and the gas collecting body, the smoke and dust gas is extracted from the air suction port, and the smoke and dust gas is mixed and then flows out of the system from the gas collecting end; after the smoke gas passes through the filtering and sampling unit 9, the smoke is collected after being filtered by a filter membrane arranged in the smoke gas, then passes through the induction part in the flow monitoring unit 1 to induce the flow of the smoke gas, and finally enters the air exhaust end of the vacuum generator 2, and the whole process is high-temperature heat tracing without condensation and dehumidification; the power unit 6 adjusts the pressure of the jet flow through adjusting the pressure adjusting valve 4, so that the suction force and the suction amount of the vacuum generator 2 are automatically controlled, the pressure detecting unit 3 detects and records the pressure value of the jet flow end, and the performance of the vacuum generator 2 is judged according to the empirical value.
The controller 7 controls the flow of the extracted smoke gas to reach a target value by performing closed-loop control on the power unit 6 and the flow monitoring unit 1, and when the target value is changed, the system can automatically control and stabilize the flow near the target value; when the system is installed in an application site, the flow velocity detection unit 8 detects an actual flow velocity value in a flue, the flow velocity of a sampling port is consistent with the flow velocity of smoke gas in the flue according to the diameter of a sampling head and a target collection flow value, when the flow velocity detected by the flow velocity detection unit 8 changes, the target flow value of the flow monitoring unit 1 changes, the closed-loop control device 7 controls the power unit 6 to reach a new target flow value, constant-speed sampling is finally achieved, and sampling of the smoke sampler sampling system is more accurate.
In this embodiment, the collected flow value of the vacuum generator 2 is a range, and since the flow rates of the application sites are different and have variations, in order to better realize constant-speed sampling, the flow rate situation of the site can be known in advance, and a suitable sampling nozzle diameter is selected according to the daily flow rate range, so that the vacuum generator 2 performs constant-speed sampling in the optimal flow rate collection range, and therefore, one vacuum generator 2 can meet most of the requirements of tracking the flow rate of the site by selecting the diameter of the sampling nozzle.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The sampling system of the smoke dust sampler is characterized by comprising a sampling pipeline for sampling smoke dust, a vacuum generator arranged on the sampling pipeline and used for extracting the smoke dust, and an air source pipeline communicated with the vacuum generator, wherein the sampling pipeline and the vacuum generator are both positioned in a high-temperature area.
2. The smoke sampler sampling system of claim 1 further comprising a flow rate control module for controlling the pressure of said air supply line.
3. The smoke sampler sampling system of claim 2 wherein the flow rate control module comprises a flow monitoring unit disposed on the sampling line, a pressure regulating mechanism disposed on the gas source line, and a controller electrically connected to both the flow monitoring unit and the pressure regulating unit.
4. The smoke sampler sampling system of claim 3 wherein the flow rate control module further comprises a flow rate sensing unit in electrical communication with the controller for sensing a flow rate of flue gas in the flue.
5. The smoke sampler sampling system of claim 3 wherein said pressure adjustment mechanism comprises a pressure regulating valve disposed in said air supply line for adjusting the pressure in said air supply line, and a power unit electrically connected to said controller for rotating an adjustment end of said pressure regulating valve.
6. The smoke sampler sampling system of claim 3 wherein the sampling line comprises a filter sampling unit for collecting smoke and a first conduit for communicating the filter sampling unit with a vacuum generator, the flow monitoring unit being located between the vacuum generator and the filter sampling unit.
7. The sampling system of the smoke sampler as defined in claim 6, wherein said flow monitoring unit comprises a hollow structure having two ends respectively connected to the first pipe, an orifice plate disposed inside said structure, and two detecting probes for detecting the pressure difference between two sides of the orifice plate.
8. The smoke sampler sampling system of claim 3 wherein said gas source line comprises a second conduit for communicating a high pressure gas source with said vacuum generator, said pressure regulating unit being disposed on said second conduit between the high pressure gas source and said vacuum generator.
9. The smoke sampler sampling system of claim 8, wherein a pressure detecting unit for detecting pressure is further provided between the pressure adjusting unit and the vacuum generator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022155056.8U CN213275050U (en) | 2020-09-27 | 2020-09-27 | Sampling system of smoke sampler |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022155056.8U CN213275050U (en) | 2020-09-27 | 2020-09-27 | Sampling system of smoke sampler |
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| CN213275050U true CN213275050U (en) | 2021-05-25 |
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| CN202022155056.8U Active CN213275050U (en) | 2020-09-27 | 2020-09-27 | Sampling system of smoke sampler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720212A (en) * | 2022-06-08 | 2022-07-08 | 南京波瑞自动化科技有限公司 | A adjustable speed sampling device for particulate matter concentration detection in flue |
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2020
- 2020-09-27 CN CN202022155056.8U patent/CN213275050U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114720212A (en) * | 2022-06-08 | 2022-07-08 | 南京波瑞自动化科技有限公司 | A adjustable speed sampling device for particulate matter concentration detection in flue |
| CN114720212B (en) * | 2022-06-08 | 2022-08-23 | 南京波瑞自动化科技有限公司 | A adjustable speed sampling device for particulate matter concentration detection in flue |
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