CN205593805U - Vector quantization circulation formula sample thief - Google Patents
Vector quantization circulation formula sample thief Download PDFInfo
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- CN205593805U CN205593805U CN201620256287.9U CN201620256287U CN205593805U CN 205593805 U CN205593805 U CN 205593805U CN 201620256287 U CN201620256287 U CN 201620256287U CN 205593805 U CN205593805 U CN 205593805U
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Abstract
The utility model relates to a vector quantization circulation formula sample thief, sampling pipe including the atmospheric pollutants that is used for sampling, the sampling pipe is installed in the fluid hose, rolling bearing is installed to the fluid hose bottom, the rolling bearing in -connection has the support that is used for supporting the fluid hose, the support top is equipped with rotates induction system, the both ends of sampling pipe are equipped with the screen cloth, be equipped with the sampling medium in the space that the sieve net shape at sampling pipe and sampling pipe both ends becomes, be equipped with inside wind speed survey device in the fluid hose, the fluid hose is equipped with outside ambient wind velocity wind direction survey device outward. The utility model discloses utilize wind -force drive air current through the sampling medium, increase substantially the sampling rate, shorten sampling time, measure the sampling volume according to wind speed, wind direction and the directional data of synchronization simultaneously and carry out the vector quantization to estimation all directions source is to the contribution degree of the site object of sampling, the advantage that take the initiative advantage that sampling flow is stable of sampling and the no electric drive of sampling were passively done all can has been merged, the volume measuring accuracy height of just sampling rapidly of sampling to need not the electric energy as sampling power.
Description
Technical field:
This utility model belongs to atmospheric sampling technical field, particularly relates to a kind of vector quantization flow type sampler.
Background technology:
Current atmospheric sampling has active, passive type and flow type three kinds.
Active atmospheric sampling enters air with power-actuated pumping to be carried out, and target analytes is by collected after the sampling medias such as filter membrane.Active air sampler stability of flow, sampling volume precision is high, need stable driven by power during yet with work, and operator are required higher, it is difficult to be universal, on the other hand, environmental pollution monitoring generally requires monitors the pollutant away from emission source, and this numerical value is the lowest, it is therefore desirable to obtain the sample of large volume as far as possible in finite time, the big traffic sampling device meeting demand is expensive, bulky, is unfavorable for extensive sampling network；Remote districts are difficult to again provide stable power supply simultaneously, and then limit the application of active sampling.
Passive atmospheric sampling is spread based on molecule, adsorb, settle or penetration theory, and with object fugacity difference between sampling media and air as driving force, object is adsorbed by the sampling media with high absorption capacity, thus realizes sampling.Passive atmospheric sampler selects the sampling medias such as polyurethane foam (PUF), macromolecule resin polymer, semipermeable membrane and polyethylene film, can implement to gather to vapor phase contaminants in air or granule phase pollutant.For actively sampling, Passive sampler volume is little, sensitive light, be readily transported, sampling operation process is simple, it is not necessary to driven by power, economical and practical, is especially suitable for remote location, background area uses；The measurement result of Passive sampler represents the weighted average mass density (concentration) of one period of long period, and the application of passive sampling network can reflect the spatial distribution state of air pollution on a macro scale.But the sampling rate of passive atmospheric sampler is relatively low, and the sampling period is long, the environmental effect by sampling periphery is relatively big simultaneously, and sampling precision is relatively low, and sampling volume and pollutant levels error are big, are adapted only to do semi-quantitative analysis.
Flow type atmospheric sampling is a kind of novel sampling technology between active and passive type, need not driven by power, and is dependent on wind energy and realizes sampling, drastically increase its sampling rate as passive sampling technology；From sampling ultimate principle for, flow type sampling then with actively sample identical.Sampling is simple, economy, space-time coverage rate are high, is suitable for remote location, background area use.Current flow type sampler relies on record ambient wind velocity, then calculates sampling volume by flowing through the empirical regression equation of the inside and outside wind speed of sampler.Due to wind direction and the conversion at any time of wind speed, being actually pointed to and the randomness of the wind direction goodness of fit of sampler, and transducer sensitivity restriction, ultimately result in the estimation error at low wind friction velocity down-sampling volume bigger, the deviation of 2 to 3 times may be produced, thus reduce quantitative accuracy.
Utility model content:
This utility model purpose is the shortcoming and defect in order to overcome above-mentioned existing flow type Sampling techniques, it is provided that the novel vector quantization flow type sampler that a kind of sampling rate is high, sampling precision is high, and its technical scheme is as follows:
A kind of vector quantization flow type sampler, it is characterized in that: include the sampling tube for atmosphere pollution of sampling, described sampling tube is installed in fluid hose, bottom described fluid hose, rolling bearing is installed, connect in described rolling bearing and have the support for supporting fluid hose, described cradle top is provided with rotation induction installation, the two ends of described sampling tube are provided with screen cloth, it is provided with sampling media in the space that the screen cloth at described sampling tube and sampling tube two ends is formed, being provided with internal anemometry device in described fluid hose, described fluid hose is externally provided with external environment condition wind speed and direction determinator.
Further, the backend arrangement of described fluid hose has at least one empennage, described empennage to be vertically arranged with fluid hose.
Further, the air intake of described sampling tube is provided with collar, and the screen cloth of air intake is sticked in sampling tube front end by described collar.
Further, the outlet air end of described sampling tube connects hollow pipe, and the screen cloth of outlet air end is sticked in sampling tube rear end by hollow pipe.
Further, the quantity of described sampling tube is at least one, and the cross section of sampling tube is circular, oval or polygon.
Further, described sampling media sets the material with high absorption capacity according to the object of required sampling.
Further, described sampler is configured with sampling volume metering module.
Compared with prior art, the beneficial effects of the utility model: this utility model utilizes wind drive air to flow through sampling media, increase substantially sampling rate, shorten the sampling time；Simultaneously according to wind speed, wind direction and the sensing data synchronized, sampling volume metering carried out vector quantization, thus estimate all directions source contribution degree to sample bits point target thing；Having merged the stable advantage of the sampling flow actively sampled and the advantage without electrical drive power of passive sampling, sampling is rapidly and sampling volume measuring accuracy is high, and without electric energy as sampling power.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of an embodiment of vector quantization flow type sampler；
Fig. 2 is a schematic diagram during embodiment sampling of vector quantization flow type sampler；
Fig. 3 is the vector quantization metering exploded view of vector quantization flow type sampler.
Detailed description of the invention:
The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is further described, but this utility model is not limited to these embodiments.
As depicted in figs. 1 and 2, a kind of vector quantization flow type sampler, use supporting structure, sampling media used can be inserted with different size in the sampling tube of different cross section shape.Can rotate with wind speed delicately for convenience of sampler, sampler uses light material processing and forming, and sampling process is that air flows through sampling media under wind drive naturally, and object is adsorbed by the sampling media with high absorption capacity.
Vector quantization flow type sampler includes sampling tube 3, sampling tube 3 is installed in fluid hose 2, rolling bearing 4 is installed bottom fluid hose 2, rolling bearing 4 coordinates with support 5 makes fluid hose 2 horizontally, naturally sampling is placed, the cross section at the two ends of sampling tube 3 is provided with screen cloth 11, collar 10 snaps in or rotates and is fixed on sampling tube 3 air intake, the screen cloth 11 of air intake is fixed on the cross section of sampling tube 3 front end by collar 10, the outlet air end of sampling tube 3 is fixed with hollow pipe 9 by rotation or the mode that snaps in, also screen cloth 11 it is fixed with by hollow pipe 9 on the cross sectional rear end face of sampling tube 3.
Support 5 vertical level is fixed, and support 5 top is provided with rotation induction installation 8, and sampling media 6 is placed in the space of screen cloth 11 formation at sampling tube 3 and sampling tube 3 two ends.
It is provided with anemometry device 7 in the inside of sampler, the wind speed in sampler is flowed through for detection, typically may be disposed on the hollow pipe 9 after sampling tube 3 outlet air end, or it is arranged in other inner space of fluid hose 2, at the external environment condition wind speed and direction determinator of sampler, for recording the real-time wind speed and direction in the external world.
The outside of sampler is provided with ambient wind velocity wind direction determinator, and wind speed and direction determinator is not limited to the position of 7.Fluid hose 2 rear portion is provided with empennage 1, and empennage 1 can be a piece of, two panels or multi-disc, and arranges in vertical direction with fluid hose, and empennage 1 coordinates rolling bearing 4, makes fluid hose 2 flexible rotating, air circulation sampling tube 3 sample under wind-force effect.Meanwhile, angle that fluid hose 2 rotates and flow through the wind speed of sampling tube 3 and be rotated induction installation 8 and anemometry device 7 the real time measure and record, thus realize the vector quantization of sampling volume metering.
The quantity of sampling tube 3 is at least one, and cross section can be circular or oval or polygon, is fixed on hollow pipe 9 front end by rotation or the mode that snaps in.
Gas and particles pollutant in air can be implemented sampling by this utility model, and according to the needs of sample, sampling media can select polyurethane foam, macromolecule resin polymer or a combination of both.
This utility model is by calculating sampling volume in real time with sampler configuration sampling volume metering module.As it is shown on figure 3, within the sampling time, the vectorization calculation method of sampling volume is as follows:
In Fig. 3, α is that sampler points to and the angle of wind direction, i.e. the wind speed V of sampler pointing directionRefer to= VWind× cos α, in sampling time T, it is known that the sectional area S of sampling tube, it is possible to calculate sampling volume Vs=V accuratelyWind*cosα*T*S。
Advantage of the present utility model is to utilize wind drive air to flow through sampling media, increases substantially sampling rate, shortens the sampling time；Simultaneously according to wind speed, wind direction and the sensing data synchronized, sampling volume can be carried out vector quantization metering, thus estimate all directions source contribution degree to sample bits point target thing；The sampling time can be determined according to the compound property that need to sample further, it is also possible on the premise of the fixed sample time, filter out the compound suitably sampled.
Specific embodiment described herein is only to this utility model spirit explanation for example.Described specific embodiment can be made various amendment or supplements or use similar mode to substitute by this utility model person of ordinary skill in the field, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
Claims (7)
1. a vector quantization flow type sampler, it is characterized in that: include the sampling tube for atmosphere pollution of sampling, described sampling tube is installed in fluid hose, bottom described fluid hose, rolling bearing is installed, connect in described rolling bearing and have the support for supporting fluid hose, described cradle top is provided with rotation induction installation, the two ends of described sampling tube are provided with screen cloth, it is provided with sampling media in the space that the screen cloth at described sampling tube and sampling tube two ends is formed, internal anemometry device it is provided with in described fluid hose, described fluid hose is externally provided with external environment condition wind speed and direction determinator.
A kind of vector quantization flow type sampler the most according to claim 1, it is characterised in that: the backend arrangement of described fluid hose has at least one empennage, described empennage to be vertically arranged with fluid hose.
A kind of vector quantization flow type sampler the most according to claim 1, it is characterised in that: the air intake of described sampling tube is provided with collar, and the screen cloth of air intake is sticked in sampling tube front end by described collar.
A kind of vector quantization flow type sampler the most according to claim 1, it is characterised in that: the outlet air end of described sampling tube connects hollow pipe, and the screen cloth of outlet air end is sticked in sampling tube rear end by hollow pipe.
A kind of vector quantization flow type sampler the most according to claim 1, it is characterised in that: the quantity of described sampling tube is at least one, and the cross section of sampling tube is circular, oval or polygon.
A kind of vector quantization flow type sampler the most according to claim 1, it is characterised in that: described sampling media sets the material with high absorption capacity according to the object of required sampling.
A kind of vector quantization flow type sampler the most according to claim 1, it is characterised in that: described sampler is configured with sampling volume metering module.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620256287.9U CN205593805U (en) | 2016-03-30 | 2016-03-30 | Vector quantization circulation formula sample thief |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620256287.9U CN205593805U (en) | 2016-03-30 | 2016-03-30 | Vector quantization circulation formula sample thief |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865852A (en) * | 2016-03-30 | 2016-08-17 | 中国科学院城市环境研究所 | Vectored flow sampler |
| CN109781470A (en) * | 2019-03-20 | 2019-05-21 | 新昌县以琳环保科技有限公司 | A kind of sampling equipment and sampling method for Detection of Air Quality |
-
2016
- 2016-03-30 CN CN201620256287.9U patent/CN205593805U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105865852A (en) * | 2016-03-30 | 2016-08-17 | 中国科学院城市环境研究所 | Vectored flow sampler |
| CN109781470A (en) * | 2019-03-20 | 2019-05-21 | 新昌县以琳环保科技有限公司 | A kind of sampling equipment and sampling method for Detection of Air Quality |
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