CN110208156A - A kind of Smoke Monitoring System - Google Patents
A kind of Smoke Monitoring System Download PDFInfo
- Publication number
- CN110208156A CN110208156A CN201910484254.8A CN201910484254A CN110208156A CN 110208156 A CN110208156 A CN 110208156A CN 201910484254 A CN201910484254 A CN 201910484254A CN 110208156 A CN110208156 A CN 110208156A
- Authority
- CN
- China
- Prior art keywords
- collecting chamber
- smoke collecting
- smoke
- solenoid valve
- air inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 75
- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 238000005070 sampling Methods 0.000 claims abstract description 25
- 238000012806 monitoring device Methods 0.000 claims abstract description 18
- 239000000523 sample Substances 0.000 claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 239000013618 particulate matter Substances 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 239000013307 optical fiber Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 4
- 230000003189 isokinetic effect Effects 0.000 claims description 11
- 238000007664 blowing Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 5
- 230000008676 import Effects 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 31
- 239000003546 flue gas Substances 0.000 abstract description 31
- 239000007789 gas Substances 0.000 abstract description 25
- 239000002245 particle Substances 0.000 description 14
- 238000012360 testing method Methods 0.000 description 4
- 206010020751 Hypersensitivity Diseases 0.000 description 3
- 208000026935 allergic disease Diseases 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000009610 hypersensitivity Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2202—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling
- G01N1/2205—Devices for withdrawing samples in the gaseous state involving separation of sample components during sampling with filters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- G01N15/075—
Abstract
The present invention relates to field of metallurgical machine, more particularly to a kind of Smoke Monitoring System, it includes emission measurement device and flow monitoring device, the emission measurement device includes smoke collecting chamber, laser, convex lens and photoelectric detector, the smoke collecting chamber is equipped with smoke collecting chamber air inlet and smoke collecting chamber gas outlet, heating room is being equipped at air inlet in smoke collecting chamber, smoke collecting chamber is that transparent high temperature resistant material is made and laser is fixedly installed in the end of smoke collecting chamber, convex lens is fixedly installed in outside smoke collecting chamber, the forward scattering light that the laser beam and particulate matter of laser transmitting generate after meeting, after being received by convex lens, photoelectric detector is imported by signal optical fibre, the smoke collecting chamber air inlet is connected with gas sampling probe to be measured, smoke collecting chamber gas outlet is connected to the air inlet of flow monitoring device by jet pump, the gas outlet of flow monitoring device and flue gas return The connection of closed tube road.Device provided by the invention excludes the interference of large quantity of moisture in flue gas, and monitoring data are true and reliable.
Description
Technical field
The present invention relates to monitoring smoke dust technical field more particularly to a kind of Smoke Monitoring Systems.
Background technique
With the rapid development of automated information technology, particle monitoring also gradually from artificial sample and lab analysis to
Automation, networking, intelligence based on monitoring direction development, monitoring instrument gradually to high quality, it is multi-functional, integrated, from
Dynamicization, systematization and intelligentized direction are developed.Existing detection device scatters formula smoke detector after being mainly, and uses sharp
Light back scattering test philosophy completes the measurement to the dust concentration of tested flue.Its embedded high stable laser signal source is passed through
Flue irradiates smoke particle, and illuminated smoke particle is by reflected laser signals, and the signal strength and dust concentration of reflection are at just
Variation.But the laser signal of this device reflection is very faint, and due in flue gas moisture content it is relatively high, the particulate matter detected
Concentration data cannot really and accurately reflect the particle concentration of flue gas to be measured, and the device be not capable of measuring flue gas pressure and
Flow velocity.
Summary of the invention
Technical problem to be solved by the invention is to provide moisture interference in flue gas can be excluded, really and accurately detect
A kind of Smoke Monitoring System of the pressure of the particle concentration of flue gas to be measured and flue gas, flow velocity.
The present invention is to be achieved by the following technical programs:
A kind of Smoke Monitoring System comprising emission measurement device and flow monitoring device, the emission measurement device packet
Smoke collecting chamber, laser, convex lens and photoelectric detector are included, the smoke collecting chamber is equipped with smoke collecting chamber air inlet and smoke collecting chamber gas outlet,
Heating room is being equipped at air inlet in smoke collecting chamber, smoke collecting chamber is that transparent high temperature resistant material is made and laser is fixedly installed in
The end of smoke collecting chamber, convex lens are fixedly installed in outside smoke collecting chamber, what the laser beam and particulate matter of laser transmitting generated after meeting
Forward scattering light after being received by convex lens, imports photoelectric detector, the smoke collecting chamber air inlet and cigarette to be measured by signal optical fibre
Gas probe tube is connected, and smoke collecting chamber gas outlet is connected to the air inlet of flow monitoring device by jet pump, flow monitoring device
Gas outlet be connected to off-gas recovery pipeline.
Further, flow monitoring device includes airflow measurement unit and flow controlling unit, and the flow controlling unit is
Isokinetic sampling's case, isokinetic sampling's case are connect with jet pump by manual modulation valve.
Further, isokinetic sampling's case includes sequentially connected air accumulator, filter and motorized needle valve, is pacified on air accumulator
Equipped with differential pressure pick-up, back pressure solenoid valve and total pressure solenoid valve, back pressure solenoid valve be mounted on Pitot tube back pressure pipeline, total pressure
Solenoid valve is mounted on Pitot tube ram-air pipe road, and Pitot tube back pressure pipeline is connect with temperature and pressure stream probe back pressure pressure pipe, Pitot tube
Total pressure pipeline is connect with temperature and pressure stream probe total pressure pressure pipe.
Further, including back-blowing device, the back-blowing device include manual solenoid valve and blowback solenoid valve, manual solenoid valve
And blowback solenoid valve is connected to by threeway with gas sampling probe to be measured and air accumulator is connect.
Advantageous effect of the invention
A kind of Smoke Monitoring System, the high stability laser that laser issues inject smoke collecting chamber, laser beam after collimation
Forward scattering light is generated after meeting with particulate matter, and after scattering light is received by convex lens, photoelectric detector is imported by signal optical fibre,
After hypersensitivity photoelectric signal transformation, scattered light signal is transformed into the electric signal directly proportional to particle concentration, output
The concentration value of particulate matter, testing result true and accurate, application condition is small, and flue gas enters smoke collecting chamber from smoke collecting chamber air inlet
It is interior, oven heats are first passed through, the moisture in flue gas is evaporated, guarantee to avoid when flue gas enters smoke collecting chamber for gaseous state
The problem of flue gas moisture content after wet desulphurization is high, influences monitoring result, is further ensured that the accuracy of particle monitoring data.
And smoke collecting chamber gas outlet is connected to the air inlet of flow monitoring device by jet pump, the gas outlet of flow monitoring device and cigarette
The connection of gas recovery channel, to make Smoke Monitoring System that can not only detect the particle concentration of flue gas to be measured, and can be with
Detect pressure, the flow velocity of flue gas.
Detailed description of the invention
Fig. 1 is emission measurement device schematic view of the front view of the present invention；
Fig. 2 is inventive flow and control principle structural schematic diagram；
1. smoke collecting chamber in figure, 2. heating rooms, 3. smoke collecting chamber air inlets, 4. laser beams, 5. lasers, 6. forward scattering light,
7. convex lens, 8. photoelectric detectors, 9. signal optical fibres, 10. smoke collecting chamber gas outlets.
Specific embodiment
A kind of Smoke Monitoring System comprising emission measurement device and flow monitoring device, the emission measurement device packet
Smoke collecting chamber 1, laser 5, convex lens 7 and photoelectric detector 8 are included, the smoke collecting chamber is equipped with smoke collecting chamber air inlet 3 and smoke collecting chamber goes out
Port 10, smoke collecting chamber is interior to be equipped with heating room 2 at air inlet, and heating room can use electric heater be heated, or adopt
With other heating methods, smoke collecting chamber is that transparent high temperature resistant material is made and laser is fixedly installed in the end of smoke collecting chamber, convex lens
Mirror is fixedly installed in outside smoke collecting chamber, the forward scattering light 6 that the laser beam 4 and particulate matter of laser transmitting generate after meeting, by convex
After lens receive, photoelectric detector 8 is imported by signal optical fibre 9, after hypersensitivity photoelectric signal transformation, scattering light letter
Number it is transformed into the electric signal directly proportional to particle concentration, exports the concentration value of particulate matter, testing result true and accurate, error ratio
Smaller, the smoke collecting chamber air inlet is connected with gas sampling probe to be measured, the air inlet of smoke collecting chamber gas outlet and flow monitoring device
Mouth is connected to by jet pump, and the pressure flow velocity and flow of flue gas, flow monitoring dress are detected while can detecte particle concentration
The gas outlet set is connected to off-gas recovery pipeline, flue gas to be detected can be recycled, be prevented outlet from impacting to environment.
Flow monitoring device includes airflow measurement unit and flow controlling unit, and the flow controlling unit is isokinetic sampling
Case, isokinetic sampling's case are connect with jet pump by manual modulation valve, by the setting of isokinetic sampling's case, can control injection
Pump pressure and flow keep the injection pressure of jet pump and flow consistent with the presence of flue gas, prevent from entering flow monitoring dress
The pressure and instability of flow for the tested flue gas set impact testing result, are further ensured that detection accuracy.
Isokinetic sampling's case includes sequentially connected air accumulator, filter and motorized needle valve, and differential pressure biography is equipped on air accumulator
Sensor, back pressure solenoid valve and total pressure solenoid valve, back pressure solenoid valve are mounted on Pitot tube back pressure pipeline, and total pressure solenoid valve is mounted on
Pitot tube ram-air pipe road, Pitot tube back pressure pipeline are connect with temperature and pressure stream probe back pressure pressure pipe, Pitot tube total pressure pipeline and temperature
Pressure stream probe total pressure pressure pipe connection, flue gas generate suction force by jet pump and flue gas are transmitted back to sample point；Sampling quantity passes through electricity
The tolerance that dynamic needle-valve adjusts compressed air is realized；Dynamic pressure is converted into flow velocity signal by Pitot tube, by pressure pipe by variable diameter
The pressure difference of pipe is sent to airflow measurement unit and is converted into sampling flow signal and sampling flow velocity, according to Pitot tube institute's velocity measurement and sampling
The flow of the difference control compressed gas of flow velocity, realizes the control to sampling flow velocity, achievees the purpose that sample flow velocity tracking flue gas flow rate.
Further, including back-blowing device, the back-blowing device include manual solenoid valve and blowback solenoid valve, manual solenoid valve
And blowback solenoid valve is connected to by threeway with gas sampling probe to be measured and air accumulator is connect, by the way that back-blowing device is arranged, with sampling
Pipeline is realized and is alternately connected, and when pipeline needs to clean, is closed the valve on sampling pipe, blowback solenoid valve is opened, gas storage
Gas in tank, which is driven into sampling pipe, carries out blowback.
The photoelectric detector, flow monitoring device, isokinetic sampling's case are existing commercial product.
When Smoke Monitoring System is detected, flue gas enters in smoke collecting chamber from smoke collecting chamber air inlet, what laser issued
High stability laser injects smoke collecting chamber after collimation, and laser beam and particulate matter generate forward scattering light after meeting, scattering light by
After lens receive, photoelectric detector, after hypersensitivity photoelectric signal transformation, scattered light signal are imported by signal optical fibre
It is transformed into the electric signal directly proportional to particle concentration, exports the concentration value of particulate matter, testing result true and accurate, application condition
It is small, and flue gas enters in smoke collecting chamber from smoke collecting chamber air inlet, first passes through oven heats, and the moisture in flue gas is evaporated
Fall, guarantees that the flue gas moisture content after avoiding wet desulphurization is high for gaseous state when flue gas enters smoke collecting chamber, influence monitoring result
Problem is further ensured that the accuracy of particle monitoring data.And the air inlet of smoke collecting chamber gas outlet and flow monitoring device
It is connected to by jet pump, the gas outlet of flow monitoring device is connected to off-gas recovery pipeline, to make Smoke Monitoring System not only
It is capable of detecting when the particle concentration of flue gas to be measured, and can detecte out the pressure of flue gas, flow velocity.
In conclusion a kind of Smoke Monitoring System that the present invention is protected, can exclude moisture interference in flue gas, it is true quasi-
Pressure, the flow velocity of the true particle concentration for detecting flue gas to be measured and flue gas.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of Smoke Monitoring System, which is characterized in that including emission measurement device and flow monitoring device, the emission measurement
Device includes smoke collecting chamber, laser, convex lens and photoelectric detector, and the smoke collecting chamber is equipped with smoke collecting chamber air inlet and smoke collecting chamber goes out
Port, smoke collecting chamber is interior to be equipped with heating room at air inlet, and smoke collecting chamber is that transparent high temperature resistant material is made and laser is fixed
It is installed on the end of smoke collecting chamber, convex lens is fixedly installed in outside smoke collecting chamber, after the laser beam and particulate matter of laser transmitting meet
The forward scattering light of generation, after being received by convex lens, by signal optical fibre import photoelectric detector, the smoke collecting chamber air inlet with
Gas sampling probe to be measured is connected, and smoke collecting chamber gas outlet is connected to the air inlet of flow monitoring device by jet pump, flow prison
The gas outlet for surveying device is connected to off-gas recovery pipeline.
2. a kind of Smoke Monitoring System according to claim 1, which is characterized in that the flow monitoring device includes flow
Measuring unit and flow controlling unit, the flow controlling unit are isokinetic sampling's case, and isokinetic sampling's case and jet pump are logical
Cross manual modulation valve connection.
3. a kind of Smoke Monitoring System according to claim 2, which is characterized in that isokinetic sampling's case includes successively connecting
Air accumulator, filter and the motorized needle valve connect is equipped with differential pressure pick-up, back pressure solenoid valve and total pressure solenoid valve on air accumulator,
Back pressure solenoid valve is mounted on Pitot tube back pressure pipeline, and total pressure solenoid valve is mounted on Pitot tube ram-air pipe road, Pitot tube back pressure
Pipeline is connect with temperature and pressure stream probe back pressure pressure pipe, and Pitot tube total pressure pipeline is connect with temperature and pressure stream probe total pressure pressure pipe.
4. a kind of Smoke Monitoring System according to claim 3, which is characterized in that it further include back-blowing device, the blowback
Device includes manual solenoid valve and blowback solenoid valve, and manual solenoid valve and blowback solenoid valve pass through threeway and gas sampling probe to be measured
Connection and air accumulator connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910484254.8A CN110208156A (en) | 2019-06-05 | 2019-06-05 | A kind of Smoke Monitoring System |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910484254.8A CN110208156A (en) | 2019-06-05 | 2019-06-05 | A kind of Smoke Monitoring System |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110208156A true CN110208156A (en) | 2019-09-06 |
Family
ID=67790875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910484254.8A Pending CN110208156A (en) | 2019-06-05 | 2019-06-05 | A kind of Smoke Monitoring System |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110208156A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112611611A (en) * | 2020-11-27 | 2021-04-06 | 南京波瑞自动化科技有限公司 | Smoke constant-speed sampling device with temperature compensation function |
| CN112683604A (en) * | 2020-12-07 | 2021-04-20 | 南京波瑞自动化科技有限公司 | Constant-speed sampling device for pressure measurement method |
| CN114577690A (en) * | 2022-03-08 | 2022-06-03 | 杭州云斐科技有限公司 | Particulate matter concentration detection device |
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Application publication date: 20190906 |
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