CN206440581U - The dust concentration monitoring device of high-humidity gas fume - Google Patents
The dust concentration monitoring device of high-humidity gas fume Download PDFInfo
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- CN206440581U CN206440581U CN201621494576.9U CN201621494576U CN206440581U CN 206440581 U CN206440581 U CN 206440581U CN 201621494576 U CN201621494576 U CN 201621494576U CN 206440581 U CN206440581 U CN 206440581U
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Abstract
The utility model is related to a kind of dust concentration monitoring device of high-humidity gas fume, and the dust concentration monitoring device includes：Sampling mouth, sampling gun, the sampling mouth further comprise：First passage, the first passage is sample gas passage, is connected with the sampling gun；Second channel, the second channel is carrier gas passage, and its arrival end connection carrier gas source of the gas, the port of export connects the sample gas passage, and the port of export is the array hole being arranged on the tube wall between first passage, second channel.The particulate matter free of losses of the utility model tool, measurement result is accurate, the advantages of detected suitable for high-humidity gas fume.
Description
Technical field
The utility model is related to dust concentration detection field, it is more particularly to a kind of in the sampling of sampling mouth diversity, be diluted in
One and the dust concentration monitoring device for being applied to high-humidity gas fume.
Background technology
Current country's atmospheric environment situation very severe, Thermal Power Generation Industry is used as maximum consumption coal rich and influential family, its air discharged
The concentration of fine particle turns into the focus of public attention in pollutant, and the conventional method of fine particle detection has light scattering method, β to penetrate
Line absorption method, optical transmission method etc..With the rise of coal-burning power plant's minimum discharge, Limestone-gypsum Wet Flue Gas Desulfurization Process and wet type are removed
Dirt technique is more and more universal, and the exit gas temperature of above-mentioned wet processing is low and containing a large amount of vapor, easily occurs steam
Condense, so as to cause fine particle to be dissolved in water and lose, the accuracy of particle concentration testing result has been had a strong impact on, while water
The presence of vapour makes it easier to form corrosive deposit and cause serious harm to instrument and flue gas sampling pipeline.
At present, in order to prevent condensed water in high-humidity gas fume from monitoring the influence caused to dust concentration, sampling pipe is mainly passed through
Road whole process heat tracing or the mode of sampling dilution are measured, but still suffer from problem：The presence of water droplet in flue gas so that smoke sampling
During the water droplet of flue gas deposited at curved mouth sampling, so as to be trapped in sampling bend pipe, form water membrane；In smoke dust sampling
During, under particularly high flue gas flow rate, flue dust impinges upon sampling tube wall under effect of inertia and captured by moisture film, and then deposits
It is lost in sampling tube wall, influences the accuracy and stability of testing result.
Utility model content
In order to solve the deficiency in above-mentioned prior art, the utility model provides a kind of particulate matter free of losses, surveyed
Measure result accurately, sampling mouth diversity samples, is diluted in one and suitable for the dust concentration monitoring device of high-humidity gas fume.
The purpose of this utility model is achieved through the following technical solutions：
A kind of dust concentration monitoring device of high-humidity gas fume, the dust concentration monitoring device includes：Sampling mouth, sampling
Rifle, the sampling mouth further comprises：
First passage, the first passage is sample gas passage, is connected with the sampling gun；
Second channel, the second channel is carrier gas passage, its arrival end connection carrier gas source of the gas, port of export connection institute
Sample gas passage is stated, the port of export is the array hole being arranged on the tube wall between first passage, second channel.
According to above-mentioned dust concentration monitoring device, alternatively, the second channel is arranged on the sample gas of the sampling mouth
Import department.
According to above-mentioned dust concentration monitoring device, it is preferable that the sampling mouth is binary channels tubular structure, described first
Passage is inner pipe passway, and the second channel is outer tube passage.
According to above-mentioned dust concentration monitoring device, it is preferable that the perforate direction of the array hole and the sample gas direction of motion
Between angle be acute angle.
According to above-mentioned dust concentration monitoring device, it is preferable that the perforate direction of the array hole and the sample gas direction of motion
Between angle be less than 60 °.
According to above-mentioned dust concentration monitoring device, it is preferable that the aperture of the array hole is less than 2mm.
According to above-mentioned dust concentration monitoring device, it is preferable that the pipeline between second channel arrival end and carrier gas source of the gas
Heater is provided with, for heating the carrier gas.
Compared with prior art, the utility model have the advantage that for：
1st, the utility model is realized by setting carrier gas passage and sample gas passage, the array hole of carrier gas interchannel
Smoke collecting is integrated with dilution；Meanwhile, carrier gas is heated in advance, and high temperature dilution gas causes the temperature rise of sampling mouth, accelerated high
Water evaporation in wet flue gas.
2nd, the angle between the airintake direction of the utility model carrier gas and the sample gas direction of motion is acute angle, carrier gas via
Array hole is diluted to sample gas, and the carrier gas prevents water droplet in flue gas, particle in sample gas vias inner walls one layer of air curtain of formation
Thing is deposited on sample gas vias inner walls and influences testing result.
3rd, the aperture of the utility model array hole is less than 2mm, and resistance is larger, and carrier gas buffering area is formed in second channel,
Carrier gas is uniformly being injected into sample gas passage full of second channel and with enough pressure rears, to ensure the spray of carrier gas
Firing rate degree can improve the accuracy and stability of testing result in sample gas vias inner walls formation air curtain.
Brief description of the drawings
Referring to the drawings, disclosure of the present utility model will be easier to understand.Skilled addressee readily understands that
It is：These accompanying drawings are used only for illustrating the technical solution of the utility model, and are not intended to protection of the present utility model
Scope is construed as limiting.In figure：
Fig. 1 is the structural representation of the high-humidity gas fume dust concentration monitoring device of the utility model embodiment 1；
Fig. 2 is the structural representation of the high-humidity gas fume dust concentration monitoring device sampling mouth of the utility model embodiment 1；
Fig. 3 is the structural representation of the high-humidity gas fume dust concentration monitoring device sampling mouth of the utility model embodiment 2.
Embodiment
Fig. 1-3 and following description describe optional embodiment of the present utility model how to instruct those skilled in the art
Implement and reproduce the utility model.In order to instruct technical solutions of the utility model, simplify or eliminate some conventional aspects.This
Art personnel should be appreciated that modification or replacement from these embodiments will be in the range of the utility model.This area
Technical staff should be appreciated that following characteristics can combine to form multiple modifications of the present utility model in a variety of ways.Thus, originally
Utility model is not limited to following embodiments, and is only limited by claim and their equivalent.
Embodiment 1
Fig. 1 schematically illustrates the structure diagram of the high-humidity gas fume dust concentration monitoring device of the present embodiment, Fig. 2 signals
Property give the present embodiment high-humidity gas fume dust concentration monitoring device sampling mouth structure diagram, as shown in Figure 1, 2, institute
Stating dust concentration monitoring device includes：
Sampling mouth 1, the sampling mouth is used for the sampling and dilution of particulate matter in flue gas, reduction flue gas dew point, acceleration flue gas
Middle droplet vaporization；The sampling mouth further comprises：
First passage 11, the first passage 11 is sample gas passage, is connected with the sampling gun；
Second channel 12, the second channel 12 is carrier gas passage, and its arrival end connection carrier gas source of the gas, the port of export connects
Lead to the sample gas passage, the port of export is the array hole 13 being arranged on the tube wall between first passage, second channel；
Sampling gun 2, the sampling gun is used for insulation, the transmission of carrier gas and sample gas, and the sampling gun is fixed by flange 3
On flue；
Measuring unit 4, the measuring unit is connected with the sampling gun, conventional for the measurement and analysis of particulate matter
Particulate matter measuring unit such as scatterometry module, beta-ray measurement module etc.；
Aspiration pump 5, the aspiration pump is located at the downstream of the measuring unit；
Flowmeter 61, the flowmeter 61 is used for the measurement and control of sample throughput after diluting；
Flowmeter 62, the flowmeter 62 is used for the control of carrier gas flow and the calibration of flowmeter 61.
Further, the dust concentration monitoring device also includes：
Heater 7, the heater is arranged on the pipeline between second channel arrival end and carrier gas source of the gas, is used for
The heating of carrier gas, carrier gas transfers heat to flue gas, accelerates droplet vaporization in high-humidity gas fume；Meanwhile, mouth temperature liter of sampling
Height, effectively blocks the formation of sample gas vias inner walls moisture film.
Moisture content is carried in high-humidity gas fume high, to avoid in sample gas vias inner walls formation moisture film, therefore：
Further, the second channel is arranged on the Yang Qi import departments of the sampling mouth, and flue gas one enters sample gas passage
It is heated so that steam fast vaporizing, it is to avoid rear end sample gas passage is impacted.
Further, the arrival end of the carrier gas passage is close to sample gas inlet so that carrier gas is in second channel
The direction of motion of the direction of motion with sample gas in first passage is consistent.
Carrier gas is diluted via array hole to sample gas, in order to allow the carrier gas to be formed well in sample gas vias inner walls
Air curtain, it is to avoid steam in sample gas condenses with particulate matter on sample gas conduit wall, therefore：
Further, the angle between the perforate direction of the array hole and the sample gas direction of motion is acute angle；
Preferably, the angle between the perforate direction of the array hole and the sample gas direction of motion is less than 60 °.
In order that obtain carrier gas forms buffering area in second channel, in carrier gas full of second channel and with a level pressure
Sample gas passage is spurted at power rear, and ensures carrier gas jet velocity, therefore：
Further, the aperture of the array hole is less than 2mm, increases aperture resistance, it is ensured that the jet velocity of carrier gas, from
And ensure the formation of sample gas vias inner walls air curtain.
The present embodiment also provides the monitoring method of above-mentioned dust concentration monitoring device, and the dust concentration monitoring method includes
Following steps：
(A1) the dust concentration monitoring device of the present embodiment is provided；
(A2) sample gas enters first passage, and the carrier gas after heating enters second channel and enters described first through array hole
Passage is diluted to sample gas；
(A3) diluted sample gas enters the dust concentration that measuring unit obtains diluted sample gas；
(A4) the actual dust concentration of sample gas is obtained according to the dust concentration of extension rate and diluted sample gas.
In above-mentioned dust concentration monitoring method, diluted sample throughput is measured by flowmeter 61, surveyed by flowmeter 62
Carrier gas flow is obtained, then the extension rate=diluted sample throughput/(diluted sample throughput-carrier gas flow).
Embodiment 2
The present embodiment provides a kind of dust concentration monitoring device of high-humidity gas fume, as different from Example 1, the present embodiment
Sampling mouth be binary channels tubular structure, the first passage be inner pipe passway, i.e. sample gas passage；The second channel is outer tube
Passage, i.e. carrier gas passage；The arrival end of the second channel is arranged on sampling mouth close to one end of probe tube, makes apparatus structure
It is compact.
Embodiment 3
The practical application example in the dust concentration monitoring device flue gas on-line monitoring field of the utility model embodiment 2.
In the application examples, sample gas is high-humidity flue gas, and the sampling pipe is bimetallic tube, and inner tube is sample gas passage, outer tube
For carrier gas passage, sample gas passage on the tube wall of carrier gas interchannel with being distributed with hole array, the perforate of the hole array
Angle between direction and the sample gas direction of motion is 30 °, and the aperture of hole array is 0.1-1mm, to ensure that carrier gas is spurted into
The speed of sample gas passage is more than 10m/s, further in sample gas vias inner walls formation air curtain.
Claims (7)
1. a kind of dust concentration monitoring device of high-humidity gas fume, the dust concentration monitoring device includes：Sampling mouth, sampling gun,
It is characterized in that：The sampling mouth further comprises：
First passage, the first passage is sample gas passage, is connected with the sampling gun；
Second channel, the second channel is carrier gas passage, and its arrival end connection carrier gas source of the gas, the port of export connects the sample
Gas passage, the port of export is the array hole being arranged on the tube wall between first passage, second channel.
2. dust concentration monitoring device according to claim 1, it is characterised in that：The second channel is arranged on described adopt
The Yang Qi import departments of sample mouth.
3. dust concentration monitoring device according to claim 1, it is characterised in that：The sampling mouth is binary channels tubular type knot
Structure, the first passage is inner pipe passway, and the second channel is outer tube passage.
4. the dust concentration monitoring device according to Claims 2 or 3, it is characterised in that：The perforate direction of the array hole
Angle between the sample gas direction of motion is acute angle.
5. dust concentration monitoring device according to claim 4, it is characterised in that：The perforate direction of the array hole and sample
Angle between the gas direction of motion is less than 60 °.
6. the dust concentration monitoring device according to Claims 2 or 3, it is characterised in that：The aperture of the array hole is less than
2mm。
7. dust concentration monitoring device according to claim 1, it is characterised in that：Second channel arrival end and carrier gas gas
Pipeline between source is provided with heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621494576.9U CN206440581U (en) | 2016-12-30 | 2016-12-30 | The dust concentration monitoring device of high-humidity gas fume |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621494576.9U CN206440581U (en) | 2016-12-30 | 2016-12-30 | The dust concentration monitoring device of high-humidity gas fume |
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| CN206440581U true CN206440581U (en) | 2017-08-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596365A (en) * | 2016-12-30 | 2017-04-26 | 聚光科技(杭州)股份有限公司 | Dust concentration monitoring device and method for high-humidity flue gas |
| CN109647235A (en) * | 2018-12-29 | 2019-04-19 | 苏州天蓝分析仪器有限公司 | A kind of dilution device based on gas mixing dilution mode |
| CN109765083A (en) * | 2018-12-26 | 2019-05-17 | 西安交通大学 | A kind of sampling of high-humidity gas fume particle and measuring device and its application method |
| CN111220423A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Flue gas particulate matter collecting pipe and flue gas particulate matter collecting method |
| CN111537406A (en) * | 2020-04-29 | 2020-08-14 | 张家港谱析传感科技有限公司 | Particulate matter arrangement method for aerodynamic particle size and concentration detection |
-
2016
- 2016-12-30 CN CN201621494576.9U patent/CN206440581U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596365A (en) * | 2016-12-30 | 2017-04-26 | 聚光科技(杭州)股份有限公司 | Dust concentration monitoring device and method for high-humidity flue gas |
| CN106596365B (en) * | 2016-12-30 | 2024-01-05 | 聚光科技(杭州)股份有限公司 | Dust concentration monitoring device and method for high-humidity flue gas |
| CN109765083A (en) * | 2018-12-26 | 2019-05-17 | 西安交通大学 | A kind of sampling of high-humidity gas fume particle and measuring device and its application method |
| CN109647235A (en) * | 2018-12-29 | 2019-04-19 | 苏州天蓝分析仪器有限公司 | A kind of dilution device based on gas mixing dilution mode |
| CN111220423A (en) * | 2020-01-17 | 2020-06-02 | 中煤科工集团重庆研究院有限公司 | Flue gas particulate matter collecting pipe and flue gas particulate matter collecting method |
| CN111537406A (en) * | 2020-04-29 | 2020-08-14 | 张家港谱析传感科技有限公司 | Particulate matter arrangement method for aerodynamic particle size and concentration detection |
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