CN204269442U - With the sampling probe of positive blowpipe - Google Patents

With the sampling probe of positive blowpipe Download PDF

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Publication number
CN204269442U
CN204269442U CN201420825155.4U CN201420825155U CN204269442U CN 204269442 U CN204269442 U CN 204269442U CN 201420825155 U CN201420825155 U CN 201420825155U CN 204269442 U CN204269442 U CN 204269442U
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China
Prior art keywords
sampling
pipe
positive blowpipe
blowpipe
positive
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CN201420825155.4U
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Chinese (zh)
Inventor
吴迅海
曾勇
肖豪
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SHENZHEN RUIJING ENVIRONMENTAL SCIENCE AND TECHNOLOGY Co Ltd
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SHENZHEN RUIJING ENVIRONMENTAL SCIENCE AND TECHNOLOGY Co Ltd
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Abstract

The utility model provides a kind of sampling probe with positive blowpipe, comprises sampling mouth, sampling pipe, positive blowpipe, flange.Sampling mouth is arranged on the front end of sampling pipe; Sampling pipe there is a perforate be connected with positive blowpipe front end; Sampling pipe rear end and positive blowpipe rear end are separately fixed on flange; Positive blowpipe rear end is connected with draft tube; Sampling pipe rear end is connected with trace pipe.The utility model sampling probe can collect the particle piled up in filter membrane sampled upstream pipe and trace pipe, thus avoids the sampling error of low concentrations of particulates thing, avoids sample-taking tracing line clogging simultaneously.

Description

With the sampling probe of positive blowpipe
Technical field
The utility model belongs to environmental monitoring technology field, relates to a kind of sampling probe, particularly relates to a kind of sampling probe with positive blowpipe.
Background technology
Because enterprise is to environmental protection growing interest in recent years, the efficiency of dust collection of cleaner improves day by day, and combustion cleaning energy source boiler is progressively popularized, and the discharge quality concentration of Concentration in Fixed Pollutants Source pipeline endoparticle thing can lower than 50 mg/m 3.With regard to the whole nation, the power plant more than overwhelming majority 300,000 KWh units have employed electrostatic precipitator and desulfurization and dedusting technology, and granular material discharged mass concentration has been reduced to about 30 mg/m 3, some is even lower than 10 mg/m 3.
Research shows, after sampling, particle may be piled up in the sample devices of filter membrane upstream.Test finds, when the gas particles thing mass concentration gathered is about 5 mg/m 3time, the particle of filter membrane mounded upstream accounts for the 10%-30% of total amount usually.Particle is piled up may be relevant with the character of the design of sample devices, flue gas particles, but there is no effective ways at present the particle of accumulation is reduced to negligible level.Specify in ISO12141 and ANSI method, when measuring low concentrations of particulates thing, must reclaim, the particle of filter membrane mounded upstream of weighing, the quality that filter membrane increases is only particle quality contained fume sample with the particulate matter accumulated quality sum of collecting in sample devices.
Present stage China's particle monitoring method employing " in Concentration in Fixed Pollutants Source, particle measures and the gaseous contaminant method of sampling " (GB/T 16157-1996), the method can not collect the particle piled up in filter membrane sampled upstream equipment, is therefore only applicable to particle mass concentration higher than 50 mg/m 3situation, measure lower than 50 mg/m 3particle time error larger.Present stage, China there is no technology for low concentrations of particulates thing sampling and analyzing and specification.
Summary of the invention
For the defect of prior art, the purpose of this utility model is to provide a kind of sampling probe can collecting particulate matter accumulated in filter membrane sampled upstream equipment, samples for low concentrations of particulates thing.
The utility model adopts following technical scheme:
With a sampling probe for positive blowpipe, described sampling probe comprises sampling mouth, sampling pipe, positive blowpipe, flange; Described sampling mouth is arranged on the front end of sampling pipe; Described sampling pipe there is a perforate be connected with positive blowpipe front end; Described sampling pipe rear end and positive blowpipe rear end are separately fixed on flange.
Further, described positive blowpipe rear end is connected with draft tube.
Further, described sampling pipe rear end is connected with trace pipe.
The beneficial effects of the utility model: the utility model sampling probe can collect the particle piled up in filter membrane sampled upstream pipe and trace pipe, thus avoids the sampling error of low concentrations of particulates thing, avoids sample-taking tracing line clogging simultaneously.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model sampling probe.
Fig. 2 is the composition schematic diagram of the sampling apparatus of application the utility model sampling probe.
Embodiment
In order to more fully understand technology contents of the present utility model, below in conjunction with specific embodiment the technical solution of the utility model being introduced further and illustrating.
As shown in Figure 1, the utility model provides a kind of sampling probe with positive blowpipe, comprises sampling mouth 1, sampling pipe 2, positive blowpipe 3, flange 4.Sampling mouth 1 is arranged on the front end of sampling pipe 2; Sampling pipe 2 there is a perforate be connected with positive blowpipe 3 front end; Sampling pipe 2 rear end and positive blowpipe 3 rear end are separately fixed on flange 4.
Positive blowpipe 3 rear end is connected with draft tube 5.Draft tube 5 connects air compressor machine, for inputting pure air.
Sampling pipe 2 rear end is connected with trace pipe 6.Trace pipe 6 connects filtrator, is placed with filter membrane in filtrator.
Sampling probe is arranged on flue by flange 4, and sampling mouth 1, sampling pipe 2, positive blowpipe 3 are positioned at flue, and draft tube 5 and trace pipe 6 are positioned at outside flue.
As shown in Figure 2, the sampling apparatus of sampling probe shown in application drawing 1, its course of work is as follows:
Startup aspiration pump and flow controller start sampling, and under the suction function that aspiration pump produces, flue gas enters sampling pipe 2 after being inhaled into sampling mouth 1, then is delivered to filtrator by trace pipe 6, and the particle in flue gas is collected on filter membrane.Sampling terminates rear startup air compressor machine, and in draft tube 5, input pure air, pure air enters sampling pipe 2 and trace pipe 6 through positive blowpipe 3, and purge the particle piled up in sampling pipe 2 and trace pipe 6 to filtrator, particle is collected on filter membrane.Purging terminates rear closedown aspiration pump and air compressor machine, takes out filter membrane and weighs, and namely the quality that filter membrane increases is particle quality contained in fume sample.
The utility model sampling probe can collect the particle piled up in filter membrane sampled upstream pipe and trace pipe, thus avoids the sampling error of low concentrations of particulates thing, avoids sample-taking tracing line clogging simultaneously.
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 (3)

1. be with a sampling probe for positive blowpipe, it is characterized in that: described sampling probe comprises sampling mouth, sampling pipe, positive blowpipe, flange; Described sampling mouth is arranged on the front end of sampling pipe; Described sampling pipe there is a perforate be connected with positive blowpipe front end; Described sampling pipe rear end and positive blowpipe rear end are separately fixed on flange.
2. the sampling probe of the positive blowpipe of band according to claim 1, is characterized in that: described positive blowpipe rear end is connected with draft tube.
3. the sampling probe of the positive blowpipe of band according to claim 1, is characterized in that: described sampling pipe rear end is connected with trace pipe.
CN201420825155.4U 2014-12-24 2014-12-24 With the sampling probe of positive blowpipe Active CN204269442U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420825155.4U CN204269442U (en) 2014-12-24 2014-12-24 With the sampling probe of positive blowpipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420825155.4U CN204269442U (en) 2014-12-24 2014-12-24 With the sampling probe of positive blowpipe

Publications (1)

Publication Number Publication Date
CN204269442U true CN204269442U (en) 2015-04-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420825155.4U Active CN204269442U (en) 2014-12-24 2014-12-24 With the sampling probe of positive blowpipe

Country Status (1)

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CN (1) CN204269442U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105738168A (en) * 2016-04-25 2016-07-06 青岛平衡环保科技有限公司 Sampling method and sampling device for particulate matter and gaseous pollutant samples in tunnel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105738168A (en) * 2016-04-25 2016-07-06 青岛平衡环保科技有限公司 Sampling method and sampling device for particulate matter and gaseous pollutant samples in tunnel
CN105738168B (en) * 2016-04-25 2018-09-21 青岛平衡环保科技有限公司 The method of sampling and sampling apparatus of particulate matter and gaseous pollutants sample in a kind of tunnel

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