CN204479367U - The sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source - Google Patents
The sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source Download PDFInfo
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- CN204479367U CN204479367U CN201520151084.9U CN201520151084U CN204479367U CN 204479367 U CN204479367 U CN 204479367U CN 201520151084 U CN201520151084 U CN 201520151084U CN 204479367 U CN204479367 U CN 204479367U
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- fine particle
- dust concentration
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Abstract
The utility model relates to the sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source, it is characterized in that, comprise sampling gun main body, particle cutting collecting part, pitot tube (9), differential pressure pickup (10) and sampling pump (11), described sampling gun main body comprises the sample nozzle (1) connected successively, sample bend pipe (2) and sampling gun (3); Particle cutting collecting part comprises cutter for particles (6), sampling film (7) and the mass-flow gas meter (8) in order to monitor sample gas flow, and sampling gun is nafion tube bank; Pitot tube (9) is in order to transfer to sampling pump (11) by the flue gas recorded static pressure signal and dynamic pressure signal by differential pressure pickup (10), sampling pump (11) controls the speed of evacuation according to the signal transmission of differential pressure pickup (10), realizes isokinetic sampling.The utility model can realize the rapid collection of fine particle in low dust concentration flue gas.
Description
Technical field
The utility model belongs to environmental monitoring technology field, is specifically related to the sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source.
Background technology
Current China atmospheric environment outstanding problem, regional gray haze takes place frequently, and causes extensive concern.Gray haze is formed mainly to be increased by the fine particle (PM2.5) in air and causes, and the PM2.5 of the fixed-contamination source emission based on fire coal is the main source of PM2.5 in air.In stationary source, the collection of PM2.5 is the basis analyzing PM2.5 discharge capacity and component resolving.
At present, for the collection of fine particle in stationary source, the main dilution tunnel method that adopts is carried out, and the method has good collection effect for fine particle in the higher flue gas of dust concentration, flue gas relative humidity and flue-gas temperature.But along with become zero-emission, minimum discharge and coal-burning boiler of coal-burning power plant changes the propelling of gas fired-boiler, in stationary source discharge flue gas, dust concentration is continuous downtrending, and flue gas humiture all decreases.
Although existing dilution tunnel method can be suitable for the collection of fine particle in above-mentioned stationary source, the introducing due to carrier gas makes flue gas concentration reduce further, the sampling time is extended greatly, reduces sampling efficiency.In addition, needed for dilution tunnel method, instrument and equipment is more, operates also easy not.
Utility model content
For the problems referred to above, the utility model provides the sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source, and this device can the low fume of Quick Acquisition (dust concentration≤5mg/m
3) in PM10 and PM2.5, and sampling apparatus structure is simple, easy to operate.For achieving the above object, the utility model is by the following technical solutions:
The sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source, comprise sampling gun main body, particle cutting collecting part, pitot tube (9), differential pressure pickup (10) and sampling pump (11), described sampling gun main body comprises the sample nozzle (1) connected successively, sample bend pipe (2) and sampling gun (3), is outside equipped with sampling gun shell (4) at sampling gun (3); Particle cutting collecting part comprises cutter for particles (6), sampling film (7) and the mass-flow gas meter (8) in order to monitor sample gas flow, it is characterized in that, described sampling gun is nafion tube bank, it has backflow sweep gas entrance and the outlet of backflow sweep gas; Sampling gun (3) is directly connected with cutter for particles (6); Pitot tube (9) is in order to transfer to sampling pump (11) by the flue gas recorded static pressure signal and dynamic pressure signal by differential pressure pickup (10), sampling pump (11) controls the speed of evacuation according to the signal transmission of differential pressure pickup (10), realizes isokinetic sampling.
As the scheme that can select, described cutter for particles is PM10 cutter or PM2.5 cutter; Described sampling film selects the one in Teflon film, quartz film or nylon membrane.
The utility model has the advantages that: nafion restrains as sampling gun by (1), be applicable to zero-emission, minimum discharge and coal and change the not too complicated flue gas transmission of the flue gas conditions such as gas, sampling gun is directly connected with cutter for particles, device does not use carrier gas, the Quick Acquisition of PM10, PM2.5 can be realized, improve particle collecting efficiency; (2) adopt the cutting of particle rear end, reduce particle loss; (3) apparatus structure is simple, and execute-in-place is convenient.
Accompanying drawing explanation
Fig. 1 is the sampling apparatus structural representation of fine particle in the low dust concentration flue gas of the utility model stationary source.
In figure:
1-sample nozzle; 2-samples bend pipe; 3-nafion sampling gun; 4-sampling gun shell; 5-fluororubber connecting pipe; 6-cutter for particles; 7-sampling film; 8-mass-flow gas meter; 9-pitot tube; 10-differential pressure pickup; 11-sampling pump.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
See Fig. 1, the sampling apparatus of fine particle in the low dust concentration flue gas of stationary source of the present utility model, comprises sampling gun main body, the cutting of particle rear end collecting part, pitot tube, differential pressure pickup and sampling pump.
Sampling gun main body comprises sample nozzle 1, sampling bend pipe 2, sampling gun 3 and sampling gun shell 4, and sample nozzle, sampling bend pipe, sampling gun are connected by nut successively; Particle rear end cutting collecting part comprises cutter for particles 6, sampling film 7 and mass-flow gas meter 8, and sampling gun 3 is connected by fluororubber flexible pipe 5 with cutter for particles 6; Quiet for the flue gas recorded, dynamic pressure are transferred to sampling pump 11 by differential pressure pickup 10 by pitot tube 9, and sampling pump 11 controls the speed of evacuation according to signal transmission, and realize isokinetic sampling, rate of air sucked in required is by mass-flow gas meter 8 record.
Sampling gun is restrained by nafion and is made.Nafion tube bank adopts the U.S. to win pure MD-700 model, and have backflow sweep gas entrance and exit, maximum operation temperature is 95 DEG C.
Cutter for particles 6 both can be PM10 cutter and also can be PM2.5 cutter, carried out choice for use according to gathered particle.Sampling film can select Teflon film, quartz film, nylon membrane etc. according to analysis requirement.
Quiet for the flue gas recorded, dynamic pressure are transferred to sampling pump by differential pressure pickup by pitot tube 9, and sampling pump controls the speed of evacuation according to signal transmission, realize isokinetic sampling, and rate of air sucked in required is by mass-flow gas meter record.
Sampling pump 11 is frequency-change sampling pump, can according to differential pressure pickup institute signal transmission bleeding regulating speed.
Before using this device, first record flue gas flow rate in flue with pitot tube 9, start sampling pump 11 and record the exhaust gas volumn extracted in certain hour, calculate according to flow velocity and exhaust gas volumn, choose suitable sample nozzle 1.
Sampling bend pipe 2 has different length, chooses the bend pipe of appropriate length according to flue cross section diameter.
Nafion sampling gun 3 has backflow sweep gas entrance and the sweep gas outlet that refluxes, judge to adopt purging or sampling in real time to purge after terminating according to smoke moisture and sampling time, sweep gas used is pressurized air.
Claims (3)
1. the sampling apparatus of fine particle in the low dust concentration flue gas of stationary source, it is characterized in that, comprise sampling gun main body, particle cutting collecting part, pitot tube (9), differential pressure pickup (10) and sampling pump (11), described sampling gun main body comprises the sample nozzle (1) connected successively, sample bend pipe (2) and sampling gun (3), is outside equipped with sampling gun shell (4) at sampling gun (3); Particle cutting collecting part comprises cutter for particles (6), sampling film (7) and the mass-flow gas meter (8) in order to monitor sample gas flow, it is characterized in that, described sampling gun is nafion tube bank, it has backflow sweep gas entrance and the outlet of backflow sweep gas; Sampling gun (3) is directly connected with cutter for particles (6); Pitot tube (9) is in order to transfer to sampling pump (11) by the flue gas recorded static pressure signal and dynamic pressure signal by differential pressure pickup (10), sampling pump (11) controls the speed of evacuation according to the signal transmission of differential pressure pickup (10), realizes isokinetic sampling.
2. the sampling apparatus of fine particle in the low dust concentration flue gas of stationary source as claimed in claim 1, it is characterized in that, described cutter for particles is PM10 cutter or PM2.5 cutter.
3. the sampling apparatus of fine particle in the low dust concentration flue gas of stationary source as claimed in claim 1, it is characterized in that, described sampling film selects the one in Teflon film, quartz film or nylon membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520151084.9U CN204479367U (en) | 2015-03-17 | 2015-03-17 | The sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520151084.9U CN204479367U (en) | 2015-03-17 | 2015-03-17 | The sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479367U true CN204479367U (en) | 2015-07-15 |
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ID=53635154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520151084.9U Expired - Fee Related CN204479367U (en) | 2015-03-17 | 2015-03-17 | The sampling apparatus of fine particle in the low dust concentration flue gas of a kind of stationary source |
Country Status (1)
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| CN (1) | CN204479367U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323701A (en) * | 2016-08-31 | 2017-01-11 | 广东恒定检测技术有限公司 | Organic waste gas sampling instrument and organic waste gas sampling method |
| CN107219156A (en) * | 2017-07-27 | 2017-09-29 | 中绿环保科技股份有限公司 | Measuring concentration of granules in certain instrument suitable for low, wet flue gas |
| CN109870328A (en) * | 2019-03-11 | 2019-06-11 | 成都智胜欣业环保科技有限公司 | A kind of oil smoke sampling device |
| CN109916678A (en) * | 2019-03-11 | 2019-06-21 | 成都智胜欣业环保科技有限公司 | A kind of sampling cutter |
-
2015
- 2015-03-17 CN CN201520151084.9U patent/CN204479367U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323701A (en) * | 2016-08-31 | 2017-01-11 | 广东恒定检测技术有限公司 | Organic waste gas sampling instrument and organic waste gas sampling method |
| CN107219156A (en) * | 2017-07-27 | 2017-09-29 | 中绿环保科技股份有限公司 | Measuring concentration of granules in certain instrument suitable for low, wet flue gas |
| CN109870328A (en) * | 2019-03-11 | 2019-06-11 | 成都智胜欣业环保科技有限公司 | A kind of oil smoke sampling device |
| CN109916678A (en) * | 2019-03-11 | 2019-06-21 | 成都智胜欣业环保科技有限公司 | A kind of sampling cutter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20170317 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |