CN205228897U - Ultra -low concentration particulate matter sampling rifle - Google Patents
Ultra -low concentration particulate matter sampling rifle Download PDFInfo
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- CN205228897U CN205228897U CN201521092252.8U CN201521092252U CN205228897U CN 205228897 U CN205228897 U CN 205228897U CN 201521092252 U CN201521092252 U CN 201521092252U CN 205228897 U CN205228897 U CN 205228897U
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Abstract
The utility model provides an ultra -low concentration particulate matter sampling rifle, it is including fixing the sampling pipe on mounting flange, positive blowpipe, gas temperature pipe, pitot tube, heating pipe, control by temperature change pipe, sampling barrel, sampling pipe, positive blowpipe, heating pipe, control by temperature change pipe are established in the sampling barrel, gas temperature pipe, pitot tube are established outside the sampling barrel, positive blowpipe is anterior to be linked together with the sampling pipe front portion. The utility model discloses can the constant speed ultra -low concentration particulate matter in the sampling flue gas. The utility model discloses a sampling pipe of whole heating avoids the steam in the flue gas to condense in the sampling pipe to reduce sampling error. The utility model discloses a positive blowpipe sweeps the sampling pipe, can reduce sampling error, can avoid the particulate matter to block up the sampling pipe again. The utility model discloses a warm -pressing flows the integrated design, the temperature pressure velocity of flow that can the real -time measurement flue gas to the sampling of realization constant speed.
Description
Technical field
The utility model belongs to environmental monitoring technology field, relates to a kind of super low concentration particle sampling rifle.
Background technology
According to the requirement of country's " prevention and control of air pollution action plan ", coal-burning boiler and the existing dust removal installation upgrading of industrial furnace be accelerated, guarantee granular material discharged concentration stabilize qualified discharge.The series of standards such as " fossil-fuel power plant atmospheric pollutant emission standard " (GB13223-2011) that country promulgates all are down to 30mg/m granular material discharged concentration in stationary source exhaust
3below.At present, most of unit installed capacity more than 300,000 kilowatts units have employed the dedusting technology of electrostatic precipitator and the outer wet desulphurization of stove, and particle concentration is lower than 50mg/m
3.Retrofit of Electrostatic Precipitator is electric bag composite dedusting, pure bag-type dust or increase wet-esp by part power plant, and particle concentration is lower than 30mg/m
3, have even lower than 10mg/m
3.
In China's stationary source exhaust, the act.std of particle monitoring is " in Concentration in Fixed Pollutants Source, particle measures and the gaseous contaminant method of sampling " (GB/T16157-1996) and " waste gas in fixed source Specifications of Monitoring Technology " (HJ/T397-2007), and the method for these standards is only applicable to particle concentration higher than 50mg/m
3stationary pollution source, when particle concentration is lower than 50mg/m
3time measuring error comparatively large, when particle concentration is lower than 10mg/m
3shi Wufa effectively measures.Existing monitoring method can not meet monitoring unit to concentration lower than 10mg/m
3super low concentration particle carry out the requirement of monitoring.The difficult point of super low concentration particle monitoring is sampling.Because flue gas has hot and humid high dirt, the easily condensation in sampling conduit of the moisture in flue gas, the particle in flue gas is easily piled up in sampling conduit.Research shows, when the particle concentration in flue gas is about 5mg/m
3time, the particle piled up in sampling conduit accounts for the 10%-30% of total amount usually.These factors cause sampling error, thus affect measuring accuracy, and easily block sampling conduit.The domestic sampling apparatus that there is no applicable super low concentration particle at present.
Summary of the invention
For the deficiencies in the prior art, the purpose of this utility model is to provide a kind of super low concentration particle sampling rifle, for the super low concentration particle in isokinetic sampling's flue gas.
The utility model provides a kind of super low concentration particle sampling rifle, and it comprises the sampling pipe be fixed on mounting flange, positive blowpipe, smoke-warming tube, pitot tube, heating tube, temperature control tube, sampling gun barrel; Described sampling pipe, positive blowpipe, heating tube, temperature control tube are located in sampling gun barrel; Described smoke-warming tube, pitot tube are located at outside sampling gun barrel; Described positive blowpipe front portion is connected with sampling pipe front portion.
Further, described sampling pipe front end is provided with sampling mouth.
Further, heating rod is provided with in described heating tube.
Further, temperature sensor is provided with in described temperature control tube.
Further, described smoke-warming tube front end is provided with temperature sensor.
Further, described pitot tube rear end is provided with differential pressure pick-up and absolute pressure sensor.
The beneficial effects of the utility model: the utility model can super low concentration particle in isokinetic sampling's flue gas.The utility model adopts the sampling pipe of omnidistance heating, avoids the moisture in flue gas to condense in sampling pipe, thus reduces sampling error.The utility model adopts positive blowpipe to purge the particle piled up in sampling pipe, can reduce sampling error, and particle can be avoided again to block sampling pipe.The utility model adopts the flow integrated design of temperature and pressure, can measure the temperature, pressure flow velocity of flue gas in real time, to realize isokinetic sampling.The utility model has compact conformation, is easy to carry, feature easy for installation.
Accompanying drawing explanation
Fig. 1 is general structure schematic diagram of the present utility model.
Fig. 2 is front portion structure schematic diagram of the present utility model.
Fig. 3 is rear structure schematic diagram of the present utility model.
Description of reference numerals is as follows: sampling pipe 1, positive blowpipe 2, smoke-warming tube 3, pitot tube 4, heating tube 5, temperature control tube 6, sampling gun barrel 7, mounting flange 8.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
A kind of super low concentration particle sampling rifle as shown in Figure 1, Figure 2, Figure 3 shows, it comprises the sampling pipe 1 be fixed on mounting flange 8, positive blowpipe 2, smoke-warming tube 3, pitot tube 4, heating tube 5, temperature control tube 6, sampling gun barrel 7.Sampling pipe 1, positive blowpipe 2, heating tube 5, temperature control tube 6 are located in sampling gun barrel 7.Smoke-warming tube 3, pitot tube 4 are located at outside sampling gun barrel 7.Positive blowpipe 2 front portion is connected with sampling pipe 1 front portion.
Sampling pipe 1 front end is provided with sampling mouth, for gathering the particle in flue gas.Positive blowpipe 2 is for purging the particle be deposited in sampling pipe 1.Heating rod is provided with, for heating sampling pipe 1 in heating tube 5.Temperature sensor is provided with, for measuring the temperature of sampling pipe 1 in temperature control tube 6.Smoke-warming tube 3 front end is provided with temperature sensor, for measuring the temperature of flue gas.Pitot tube 4 rear end is provided with differential pressure pick-up and absolute pressure sensor, for measuring differential pressure and the absolute pressure of flue gas.
Above-mentioned super low concentration particle sampling rifle is fixed on flue by mounting flange 8.
The course of work of above-mentioned super low concentration particle sampling rifle is as follows:
First sampling pipe 1 is heated to about 150 DEG C, restarts sampling pump and start sampling.Flue gas is delivered to subsequent detection device through sampling pipe 1 after being inhaled into sampling mouth.The temperature of the temperature sensor measurement flue gas of smoke-warming tube 3 front end, the differential pressure pick-up of pitot tube 4 rear end and absolute pressure sensor measure differential pressure and the absolute pressure of flue gas, can be calculated the flow velocity of flue gas by the temperature and pressure of flue gas.Then regulate sampling flow, make the gas velocity entering sampling mouth equal with the flue gas flow rate of measuring point, thus realize isokinetic sampling.After sampling terminates, input compressed-air in positive blowpipe 2, the particle be deposited in sampling pipe 1 purges to subsequent detection device by pressurized air.
In sum, the utility model can super low concentration particle in isokinetic sampling's flue gas.The utility model adopts the sampling pipe of omnidistance heating, avoids the moisture in flue gas to condense in sampling pipe, thus reduces sampling error.The utility model adopts positive blowpipe to purge the particle piled up in sampling pipe, can reduce sampling error, and particle can be avoided again to block sampling pipe.The utility model adopts the flow integrated design of temperature and pressure, can measure the temperature, pressure flow velocity of flue gas in real time, to realize isokinetic sampling.The utility model has compact conformation, is easy to carry, feature easy for installation.
The above only further illustrates technology contents of the present utility model with embodiment; so that reader is easier to understand; but do not represent embodiment of the present utility model and be only limitted to this, any technology done according to the utility model extends or recreation, all by protection of the present utility model.
Claims (6)
1. a super low concentration particle sampling rifle, is characterized in that: it comprises the sampling pipe be fixed on mounting flange, positive blowpipe, smoke-warming tube, pitot tube, heating tube, temperature control tube, sampling gun barrel; Described sampling pipe, positive blowpipe, heating tube, temperature control tube are located in sampling gun barrel; Described smoke-warming tube, pitot tube are located at outside sampling gun barrel; Described positive blowpipe front portion is connected with sampling pipe front portion.
2. super low concentration particle sampling rifle as claimed in claim 1, is characterized in that: described sampling pipe front end is provided with sampling mouth.
3. super low concentration particle sampling rifle as claimed in claim 1, is characterized in that: be provided with heating rod in described heating tube.
4. super low concentration particle sampling rifle as claimed in claim 1, is characterized in that: be provided with temperature sensor in described temperature control tube.
5. super low concentration particle sampling rifle as claimed in claim 1, is characterized in that: described smoke-warming tube front end is provided with temperature sensor.
6. super low concentration particle sampling rifle as claimed in claim 1, is characterized in that: described pitot tube rear end is provided with differential pressure pick-up and absolute pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092252.8U CN205228897U (en) | 2015-12-25 | 2015-12-25 | Ultra -low concentration particulate matter sampling rifle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521092252.8U CN205228897U (en) | 2015-12-25 | 2015-12-25 | Ultra -low concentration particulate matter sampling rifle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205228897U true CN205228897U (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521092252.8U Active CN205228897U (en) | 2015-12-25 | 2015-12-25 | Ultra -low concentration particulate matter sampling rifle |
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| CN (1) | CN205228897U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092638A (en) * | 2016-06-13 | 2016-11-09 | 青岛容广电子技术有限公司 | A kind of Duplicate Samples sampling gun for stationary source particulate matter |
-
2015
- 2015-12-25 CN CN201521092252.8U patent/CN205228897U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106092638A (en) * | 2016-06-13 | 2016-11-09 | 青岛容广电子技术有限公司 | A kind of Duplicate Samples sampling gun for stationary source particulate matter |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |