CN104422602A - Stationary pollution source unpowered constant-speed sampling method - Google Patents
Stationary pollution source unpowered constant-speed sampling method Download PDFInfo
- Publication number
- CN104422602A CN104422602A CN201310365936.XA CN201310365936A CN104422602A CN 104422602 A CN104422602 A CN 104422602A CN 201310365936 A CN201310365936 A CN 201310365936A CN 104422602 A CN104422602 A CN 104422602A
- Authority
- CN
- China
- Prior art keywords
- return
- pollution source
- stationary pollution
- flow
- unpowered
- 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.)
- Granted
Links
Abstract
The invention discloses a stationary pollution source unpowered constant-speed sampling method. In the method, through difference of front air flow and back air flow inside a stationary pollution source exhaust pipeline, by means of arrangement of a loop pipeline outside the exhaust pipeline and installation of a first co-axial valve, a venturi intelligent flow meter, a dust capture tube and a second first co-axial valve from an inlet end to an outlet end of the loop pipeline successively, computer fluid analogue simulation is pre-performed to the loop pipeline to obtain a differential pressure and a flow velocity in the loop pipeline, so that a gas flow range and a throat nozzle diameter of the venturi intelligent flow meter are determined. The venturi intelligent flow meter is employed for performing automatically intelligent flow rate adjustment to gas in the loop pipeline and constant speed sampling of the stationary pollution source is achieved through the amount of dust absorbed by a filter cylinder in the dust capture tube. The method can achieve collection of the stationary pollution source, the dust, without power, overcomes defects in a conventional monitoring method, is simple in operation, is convenient in maintenance, can avoid safety potential risk and can effectively increase a monitoring accuracy.
Description
Technical field
The present invention relates to a kind of unpowered isokinetic sampling's method of stationary pollution source.
Background technology
At present, dust content in stationary pollution source measures and mostly adopts manual monitoring and on-line monitoring two kinds of methods, stationary pollution source dust on-line monitoring measures because adopting optical principle, harsh requirement is had to using object, interference by uncertain factor is large, working service cost is high, calibration difficulty is large, and the spread be therefore not suitable with in production scene uses; Manual monitoring then adopts predicted velocity method, pressure balance method to measure, it is the most frequently used assay method of stationary pollution source dust content, but this assay method also exist sampling setup time length, complex operation, to operating personnel's technical requirement height etc. defect, particularly when work high above the ground, more owing to carrying testing tool, easily bring potential safety hazard, and manual monitoring and on-line monitoring two kinds of methods all need energising just can detect.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of unpowered isokinetic sampling's method of stationary pollution source, the collection of this method without the need to providing power to realize stationary pollution source dust, overcome the defect of conventional monitoring methods, it is simple to operate, easy to maintenance, avoid potential safety hazard, effectively improve monitoring accuracy.
For solving the problems of the technologies described above, isokinetic sampling's method that stationary pollution source of the present invention is unpowered, utilize the front and back air-flow differential in Concentration in Fixed Pollutants Source pipeline, outside gas exhaust duct, return is set, return adopts sealing reflux type and the airflow direction be parallel in gas exhaust duct, return installs the first coaxial valve successively from flowing into end to outflow end, Wen's intelligent flow meter, dust catching pipe, second coaxial valve, in advance computing machine fluid analogue simulation is carried out to return, obtain the differential pressure of loop conduit system and flow speed value to determine the throat diameter of gas flow scope and Wen's intelligent flow meter, Wen's intelligent flow meter is adopted to carry out automated intelligent flow regulation to gas in return, the isokinetic sampling of stationary pollution source is realized by the Dust Capacity of the filter cylinder absorption in dust catching pipe.
Further, above computer fluid analogue simulation is the average dynamic pressure recorded in advance on return on cross section, static pressure, total head, temperature and flow speed value, by above-mentioned data input computing machine fluid analogue system, simulated conditions are selected to be return internal diameter and to carry out fluid analogue simulation with gas exhaust duct parallel-segment length, obtain return speed cloud atlas, speed vector figure and return into and out of end flow velocity and force value, Wen's intelligent flow meter throat diameter and flow range is determined, to realize unpowered isokinetic sampling according to this simulated data.
Further, close the first coaxial valve and the second coaxial valve, change the filter cylinder in dust catching pipe, what realize fixed-contamination source sampling varies operation.
Because the unpowered isokinetic sampling's method of stationary pollution source of the present invention have employed technique scheme, namely this method utilizes the front and back air-flow differential in Concentration in Fixed Pollutants Source pipeline, outside gas exhaust duct, return is set, return installs the first coaxial valve successively from flowing into end to outflow end, Wen's intelligent flow meter, dust catching pipe, second coaxial valve, in advance computing machine fluid analogue simulation is carried out to return, obtain the differential pressure of loop conduit system and flow speed value to determine the throat diameter of gas flow scope and Wen's intelligent flow meter, Wen's intelligent flow meter is adopted to carry out automated intelligent flow regulation to gas in return, the isokinetic sampling of stationary pollution source is realized by the Dust Capacity of the filter cylinder absorption in dust catching pipe.The collection of this method without the need to providing power to realize stationary pollution source dust, overcome the defect of conventional monitoring methods, it is simple to operate, easy to maintenance, avoids potential safety hazard, effectively improves monitoring accuracy.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is the schematic diagram of return in the unpowered isokinetic sampling's method of stationary pollution source of the present invention.
Embodiment
As shown in Figure 1, isokinetic sampling's method that stationary pollution source of the present invention is unpowered, utilize the front and back air-flow differential in Concentration in Fixed Pollutants Source pipeline 1, return 2 is set outside gas exhaust duct 1, return 2 adopts sealing reflux type and the airflow direction be parallel in gas exhaust duct 1, return 2 installs the first coaxial valve 3 successively from flowing into end to outflow end, Wen's intelligent flow meter 4, dust catching pipe 5, second coaxial valve 6, in advance computing machine fluid analogue simulation is carried out to return 2, obtain the differential pressure of return 2 system and flow speed value to determine the throat diameter of gas flow scope and Wen's intelligent flow meter 4, gas in Wen's intelligent flow meter 4 pairs of returns 2 is adopted to carry out automated intelligent flow regulation, the isokinetic sampling of stationary pollution source is realized by the Dust Capacity of the filter cylinder absorption in dust catching pipe 5.
Further, above computer fluid analogue simulation is the average dynamic pressure recorded in advance on return 2 on cross section, static pressure, total head, temperature and flow speed value, by above-mentioned data input computing machine fluid analogue system, simulated conditions are selected to be return 2 internal diameter and to carry out fluid analogue simulation with gas exhaust duct 1 parallel-segment length, obtain return 2 speed cloud atlas, speed vector figure and return 2 into and out of end flow velocity and force value, Wen's intelligent flow meter 4 throat diameter and flow range is determined, to realize unpowered isokinetic sampling according to this simulated data.
Further, close the first coaxial valve 3 and the second coaxial valve 6, change the filter cylinder in dust catching pipe 5, what realize fixed-contamination source sampling varies operation.
This method sets up the unpowered isokinetic sampling of stationary pollution source, thus realize carrying out Fast Measurement to pipeline dust concentration, solve loaded down with trivial details consuming time, effective low, the high in cost of production problem that conventional monitoring methods is deposited, and the precision of this method, accuracy, operability all have clear improvement than conventional monitoring methods, change stationary pollution source dust in the past and detect the problem needing propulsion system, improve monitoring efficiency and precision, avoid potential safety hazard.
Claims (3)
1. the unpowered isokinetic sampling's method of stationary pollution source, it is characterized in that: utilize the front and back air-flow differential in Concentration in Fixed Pollutants Source pipeline, outside gas exhaust duct, return is set, return adopts sealing reflux type and the airflow direction be parallel in gas exhaust duct, return installs the first coaxial valve successively from flowing into end to outflow end, Wen's intelligent flow meter, dust catching pipe, second coaxial valve, in advance computing machine fluid analogue simulation is carried out to return, obtain the differential pressure of loop conduit system and flow speed value to determine the throat diameter of gas flow scope and Wen's intelligent flow meter, Wen's intelligent flow meter is adopted to carry out automated intelligent flow regulation to gas in return, the isokinetic sampling of stationary pollution source is realized by the Dust Capacity of the filter cylinder absorption in dust catching pipe.
2. the unpowered isokinetic sampling's method of stationary pollution source according to claim 1, it is characterized in that: described computing machine fluid analogue simulation is the average dynamic pressure recorded in advance on return on cross section, static pressure, total head, temperature and flow speed value, by above-mentioned data input computing machine fluid analogue system, simulated conditions are selected to be return internal diameter and to carry out fluid analogue simulation with gas exhaust duct parallel-segment length, obtain return speed cloud atlas, speed vector figure and return enter, go out to hold flow velocity and force value, Wen's intelligent flow meter throat diameter and flow range is determined according to this simulated data, to realize unpowered isokinetic sampling.
3. the unpowered isokinetic sampling's method of stationary pollution source according to claim 1 and 2, is characterized in that: close the first coaxial valve and the second coaxial valve, and change the filter cylinder in dust catching pipe, what realize fixed-contamination source sampling varies operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310365936.XA CN104422602B (en) | 2013-08-21 | 2013-08-21 | Isokinetic sampling's method that stationary source is unpowered |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310365936.XA CN104422602B (en) | 2013-08-21 | 2013-08-21 | Isokinetic sampling's method that stationary source is unpowered |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104422602A true CN104422602A (en) | 2015-03-18 |
| CN104422602B CN104422602B (en) | 2018-11-23 |
Family
ID=52972233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310365936.XA Active CN104422602B (en) | 2013-08-21 | 2013-08-21 | Isokinetic sampling's method that stationary source is unpowered |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104422602B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285038A (en) * | 2017-06-30 | 2017-10-24 | 中铁九局集团工程检测试验有限公司 | Blending station filler bin sampler |
| CN108760830A (en) * | 2018-03-20 | 2018-11-06 | 安徽航途智能科技有限公司 | A kind of active air admission type bus inflammable gas detection device and working method |
| CN109682650A (en) * | 2019-01-30 | 2019-04-26 | 北京石油化工工程有限公司 | The ground sampling structure of stationary source flue gas monitoring |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131579A (en) * | 1982-01-30 | 1983-08-05 | Nikkiso Co Ltd | Portable sampling device |
| JPH0868734A (en) * | 1994-08-31 | 1996-03-12 | Ngk Insulators Ltd | Probe tube for sampling gas |
| CN1945233A (en) * | 2006-09-30 | 2007-04-11 | 浙江麦姆龙仪表有限公司 | Measuring method and its device for external screw sampling of pipeline gas flow |
| CN101038296A (en) * | 2007-04-03 | 2007-09-19 | 高明逊 | Non-blocking primary air speed measuring device |
| CN100548439C (en) * | 2003-10-03 | 2009-10-14 | 沙特阿拉伯石油公司 | The method and apparatus that is used for the element sulphur of gas in the measurement gas pipeline |
-
2013
- 2013-08-21 CN CN201310365936.XA patent/CN104422602B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58131579A (en) * | 1982-01-30 | 1983-08-05 | Nikkiso Co Ltd | Portable sampling device |
| JPH0868734A (en) * | 1994-08-31 | 1996-03-12 | Ngk Insulators Ltd | Probe tube for sampling gas |
| CN100548439C (en) * | 2003-10-03 | 2009-10-14 | 沙特阿拉伯石油公司 | The method and apparatus that is used for the element sulphur of gas in the measurement gas pipeline |
| CN1945233A (en) * | 2006-09-30 | 2007-04-11 | 浙江麦姆龙仪表有限公司 | Measuring method and its device for external screw sampling of pipeline gas flow |
| CN101038296A (en) * | 2007-04-03 | 2007-09-19 | 高明逊 | Non-blocking primary air speed measuring device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107285038A (en) * | 2017-06-30 | 2017-10-24 | 中铁九局集团工程检测试验有限公司 | Blending station filler bin sampler |
| CN108760830A (en) * | 2018-03-20 | 2018-11-06 | 安徽航途智能科技有限公司 | A kind of active air admission type bus inflammable gas detection device and working method |
| CN109682650A (en) * | 2019-01-30 | 2019-04-26 | 北京石油化工工程有限公司 | The ground sampling structure of stationary source flue gas monitoring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104422602B (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103335773B (en) | Pipeline gas pressure measuring device | |
| CN106525520B (en) | Dilution multi-stage sampling device for flue gas mixing channel of fixed combustion source | |
| CN106837840B (en) | It is a kind of to be used for the fan-shaped cascade experiment system that stator blade aeroperformance is studied in Non-uniform Currents | |
| CN102749227B (en) | In-cylinder sampling system and method for internal combustion engine | |
| CN107014598B (en) | A kind of air valve air inlet performance testing device and test method | |
| CN206038715U (en) | Pitot tube is from device of traverse measurement coal pulverizer pipeline wind speed | |
| CN102133496B (en) | Dust filtering performance testing method and system of air filter for cab of vehicle on road | |
| CN204556213U (en) | Boiler cold-state aerodynamic field on-line measurement device | |
| CN204479546U (en) | Based on grid arrange method without sampling pump flue gas concentration measuring system | |
| CN105865542A (en) | Integrated measuring device and method for smoke flow and pollutants | |
| CN103487294A (en) | Dynamic pressure balanced type constant speed flue dust sampling tube | |
| CN104422602A (en) | Stationary pollution source unpowered constant-speed sampling method | |
| CN203231899U (en) | Filter field test bench applied to general ventilation | |
| CN202033227U (en) | Constant speed gas distribution sampling device for atmosphere particulate matter monitoring instrument | |
| CN104457917A (en) | Detecting system for gas instrument | |
| CN203163959U (en) | Simulation device for wind resistance of speed regulation air laminar flow test model | |
| CN205403835U (en) | Portable smoke and dust tester | |
| CN201548399U (en) | Aviation air cycle machine program controlled testing system | |
| CN204177548U (en) | A kind of pipeline liquid discharge characteristic proving installation | |
| CN102103045B (en) | Constant speed mechanical water sampling device and sampling method | |
| CN109612699A (en) | A kind of PM2.5The evaluating apparatus of turbulent flow reunion device efficiency | |
| CN202188998U (en) | Bingham type fluid flow detecting instrument | |
| CN103335677A (en) | Air volume test system | |
| CN209821022U (en) | Ground calibration and measurement device of pulverized coal concentration measurement system | |
| CN203455129U (en) | Measurement apparatus for gas pressure in pipeline |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 3520 Tongji Road, Baoshan District, Shanghai, 201900 Patentee after: Baowu equipment Intelligent Technology Co., Ltd Address before: 201900, 335, Pu Pu Road, Shanghai, Baoshan District Patentee before: SHANGHAI BAOSTEEL INDUSTRY TECHNOLOGICAL SERVICE Co.,Ltd. |
|
| CP03 | Change of name, title or address |