CN206177762U - Constant temperature particulate matter determination appearance - Google Patents

Constant temperature particulate matter determination appearance Download PDF

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Publication number
CN206177762U
CN206177762U CN201621005532.5U CN201621005532U CN206177762U CN 206177762 U CN206177762 U CN 206177762U CN 201621005532 U CN201621005532 U CN 201621005532U CN 206177762 U CN206177762 U CN 206177762U
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China
Prior art keywords
constant temperature
paper tape
sampling
particle concentration
air inlet
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CN201621005532.5U
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Chinese (zh)
Inventor
李德安
陈康宁
丁万生
窦灏
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QINGDAO MINGHUA ELECTRONIC INSTRUMENT CO Ltd
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QINGDAO MINGHUA ELECTRONIC INSTRUMENT CO Ltd
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Priority to CN201621005532.5U priority Critical patent/CN206177762U/en
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Abstract

The utility model discloses a constant temperature particulate matter determination appearance, including the box, the box openly hinges has the chamber door, and box inside is divided into electric cabinet, underdrive case two parts through the baffle, is equipped with main circuit board in the electric cabinet, is equipped with sampling paper tape, radiation source and beta X -ray detector in the transmission case, and sampling paper tape passes through the air pump and presss from both sides between radiation source and beta X -ray detector with beta - ray method sampling head butt joint, sampling paper tape, and beta X -ray detector carries out data transmission through data line and main circuit board, be equipped with insulation sandwich respectively in tank wall in the transmission case and the chamber door, the wall is equipped with constant temperature heating device behind the transmission case, and constant temperature heating device includes temperature sensor, controller, fin and fan, and the fan setting is at the fin rear, and temperature sensor controls opening or closing of fin and fan with temperature feedback to the controller of gathering, controller. The basis is novel to receive the influence of humiture little, and it is high to detect the accuracy, and simple structure is reasonable, with low costs, is convenient for maintain.

Description

Constant temperature particle concentration analyzer
Technical field
The utility model belongs to the concentration field of test suspended particulate, and in particular to a kind of atmosphere particle monitoring device.
Background technology
Particulate matter is also known as dirt.Solid or liquid particles shape material in air.Particulate matter can be divided into primary particulate and two Secondary particulate matter.Monitoring for environment etc. needs to measure particle concentration etc..
Conventional particle sampling method has β attenuation sensors, laser method etc., for using the measurement of β attenuation sensors In the technology of grain thing concentration, due to β-ray detector self structure, the limitation of composition, its internal flicker volume photomultiplier transit Pipe is easy to be affected by variation of ambient temperature, especially the temperature difference is larger, instrumental working conditions it is relatively severe in the case of, if do not adopted Corresponding heat-preserving constant-temperature measure and temperature-compensating measure are taken, detrimental effect can be brought to the measurement of instrument, cause measurement not Stable, measurement precision is reduced, and individual cases lead to not correct measurement.
And need instrument existing while export hour data and transient data in the occasion of many measuring concentration of granules in certain Some β attenuation sensors can only go out hour data, and measure inaccurate to transient data, and laser method PM2.5 modules can be surveyed accurately Amount transient data but temperature drift, device aging etc. can affect its measurement result.
Utility model content
The utility model is single for traditional granule density monitor result output, can only individually output data, Monitoring result cannot be accurately provided, and a kind of offer measuring concentration of granules in certain instrument not influenced by ambient temperature is provided.
The technical scheme that the utility model is adopted is as follows:
Constant temperature particle concentration analyzer, including casing, the casing front is hinged with chamber door, and box house passes through dividing plate It is divided into electric cabinet, lower transmission case two parts, main circuit board is provided with the electric cabinet, sampling paper tape is provided with transmission case, is put Source and β-ray detector are penetrated, the sampling paper tape is docked by air pump with β ray method sampling heads, sampling paper tape is clipped in radiation Between source and β-ray detector, β-ray detector is carried out data transmission by data wire with main circuit board;In transmission case Heat preservation sandwich layer is respectively equipped with tank wall and chamber door, in transmission case rear wall constant temperature heating device, the constant temperature heating device are provided with Including temperature sensor, controller, fin and fan, fan is arranged on fin rear, and temperature sensor will be gathered Temperature feedback is turned on and off to controller, controller control fin and fan.
Testing result according to temperature sensor is selected controller closure or openness heat sink, the heat that heat sink is produced Amount by fan is transferred to quickly transmission case body everywhere, it is to avoid the temperature difference affects measurement result.
Six faces in transmission case are both provided with heat preservation sandwich layer, it is to avoid β ray method photomultipliers are become by environment temperature The impact of change, while in order to avoid the inside and outside situation that circumstance of temperature difference is larger, instrumental working conditions are severe of measurement, in transmission case Increased constant temperature heating device, it is ensured that the precision that is stable, improve measurement of measurement result, it is ensured that instrument normal work, just Really measurement.
Preferably, the heat preservation sandwich layer on chamber door and tank wall heat preservation sandwich layer fit face for inclined plane, and seamless laminating.Connect Contacting surface is inclined-plane, it is ensured that chamber door opens facility, beneficial to the part changed in transmission case.
Preferably, the heat preservation sandwich layer is using the one kind in warming plate, foaming polyurethane plastic foams, vacuum heat insulation tube. According to insulation need heat preservation sandwich layer is selected.
Preferably, laser method acquisition module is provided with by bracket on the rear wall of the electric cabinet, laser method acquisition module is embedding Enter main circuit board, by carrying out data transmission between data wire and main circuit board;Laser method acquisition module top is provided with laser method Sampling head, the sampling head is located at β ray method sampling heads rear.
β ray methods and laser method is combined and carry out sampled measurements to Atmospheric particulates, it is possible to achieve while exporting hour Data or transient data, DATA REASONING accurately, is calibrated with the β radiation absorption legal times to laser method module, eliminates temperature Drift makes impact of the device aging to the laser method PM2.5 module degrees of accuracy.
Preferably, the laser method sampling head includes support base, air inlet pipe and transition body, and the support base is fixed on case On body roof, air inlet pipe lower end is fixed in support base, penetrate box house is connected with laser method acquisition module;
Air inlet pipe upper end passes through and protrudes from top surface on transition body, and the lower end of the transition body sidewall is provided with equal intervals Screw, dust cap is fastened between transition volume surrounding and transition body sidewall has gap;
Top surface is fixed with screen pack on described transition body, and screen pack is less than air inlet pipe port, and screen pack is inscribed within dust-proof Cover.
Gas to be tested along dust cap and transition body gap, through screen pack, into air inlet pipe;Along air inlet pipe Laser method sampling module is reached down to, the particle of gas to be tested is measured;Strainer filtering fall to filter catkin, insect, Vegetation etc. so that result is more accurate, while dust cap ensure that in prolonged gatherer process, does not have dust and falls into air inlet Pipe affects the accuracy of samples measurements.
Preferably, the air inlet pipe includes air inlet, walks the diameter of tracheae and gas outlet, the air inlet and gas outlet It is respectively less than away TD.
Preferably, the transition body includes successively from the bottom to top column base, round platform transition seat and the column seat of honour, base With diameter greater than seat of honour diameter.
The side wall of transition body is to be obliquely installed, with air guide effect, it is ensured that the output of instantaneous result.
Preferably, the running part includes driving wheel, driven pulley, fixed seat and hold down gag, driving wheel and driven Sampling paper tape is provided between wheel, the β-ray detector passes through fixed seat and adopt in the top of fixed seat, the detecting head of detector Sample paper tape is contacted over, and radioactive source is provided with hold down gag, contacts with below sampling paper tape, and driving wheel rotarily drives paper tape forward A mobile station distance, it is ensured that the sampling paper tape between β-ray detector and radioactive source is totally pollution-free.
Preferably, it is provided with Tensioning buckle between the chamber door and casing.Avoid chamber door and receive the reasons such as vibrations with casing point From the accuracy of impact measurement result.
Preferably, the bottom half is provided with non-skid feet.From rubber strip etc., place steady reliable.While anti-skidding bottom Pin can select the height-adjustable footing of spiral, and the ground for being easy to injustice uses.
Compared with prior art, advantage of the present utility model and good effect are:
This novel integrated advantage of β ray methods and laser method, with high precision, can realize the output of hour data, The output of transient data can also being realized simultaneously, artificial operation, efficiency high is not required to, and being affected little by humiture, detection is accurate Degree is high, simple and reasonable, low cost, is easy to safeguard.Can be widely used in environmental monitoring and hanged in pollution sources flue dust, air Dust etc. pollutes the monitoring of dust particle concentration in floating particulate, labour protection post, improves the degree of accuracy of monitoring, reduces error.
Description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that Fig. 1 chamber doors open schematic diagram;
Fig. 3 is laser method sampling head structural representation;
Fig. 4 is running part structural representation in transmission case;
Fig. 5 is constant temperature heating device control principle drawing.
Above in each figure:Casing 1, Tensioning buckle 2, β ray methods sampling head 3, laser method sampling head 4, support base 4-1, air inlet Pipe 4-2, screen pack 4-3, dust cap 4-4, transition body 4-5, laser method sampling module 5, driving wheel 6, driven pulley 7, hold down gag 8, paper tape 9, β ray methods sampling module 10, constant temperature heating device 11, heat preservation sandwich layer 12, chamber door 13.
Specific embodiment
In order to be better understood from the utility model, illustrate with reference to the accompanying drawings and examples.
As Figure 1-5, constant temperature particle concentration analyzer, including casing, casing front is hinged with chamber door, box house Upper electric cabinet, lower transmission case two parts are divided into by dividing plate, main circuit board is provided with the electric cabinet, sampling is provided with transmission case Paper tape, radioactive source and β-ray detector, the sampling paper tape is docked by air pump with β ray method sampling heads, sampling paper tape folder Between radioactive source and β-ray detector, β-ray detector is carried out data transmission by data wire and main circuit board;Electric cabinet Rear wall on laser method acquisition module is provided with by bracket, laser method acquisition module is embedded in main circuit board, by data wire and master Carry out data transmission between circuit board;Laser method acquisition module top is provided with laser method sampling head, and laser method sampling head includes propping up Support seat, air inlet pipe and transition body, support base is fixed on box top wall, and air inlet pipe lower end is fixed in support base, penetrates case In vivo portion is connected with laser method acquisition module;Air inlet pipe upper end passes through and protrudes from top surface on transition body, and transition body is from the bottom to top Include column base, round platform transition seat and the column seat of honour successively, base diameter is more than seat of honour diameter.
The lower end of transition body sidewall is provided with equal intervals screw, and dust cap is fastened on transition volume surrounding and transition body sidewall Between have gap;Top surface is fixed with screen pack on transition body, and screen pack is less than air inlet pipe port, and screen pack is inscribed within dust-proof Cover.
Laser method sampling head is located at β ray method sampling heads rear;Guarantor is respectively equipped with the tank wall and chamber door of transmission case Warm interlayer, heat preservation sandwich layer adopts vacuum heat insulation tube.
Constant temperature heating device includes temperature sensor, controller, fin and fan, and fan is arranged on after fin Side, temperature sensor is turned on and off the temperature feedback for gathering to controller, controller control fin and fan.
This novel integrated advantage of β ray methods and laser method, with high precision, can realize the output of hour data, The output of transient data can also being realized simultaneously, artificial operation, efficiency high is not required to, and being affected little by humiture, detection is accurate Degree is high, simple and reasonable, low cost, is easy to safeguard.
The above, is only preferred embodiment of the present utility model, is not to make other forms to the utility model Restriction, any those skilled in the art changed possibly also with the technology contents of the disclosure above or be modified as equivalent The Equivalent embodiments of change are applied to other fields, but every without departing from technical solutions of the utility model content, according to this reality Any simple modification, equivalent variations and the remodeling made to above example with new technical spirit, still falls within this practicality new The protection domain of type technical scheme.

Claims (10)

1. constant temperature particle concentration analyzer, including casing, the casing front is hinged with chamber door, and box house is by dividing plate point For upper electric cabinet, lower transmission case two parts, main circuit board is provided with the electric cabinet, sampling paper tape, radiation are provided with transmission case Source and β-ray detector, the sampling paper tape is docked by air pump with β ray method sampling heads, and sampling paper tape is clipped in radioactive source Between β-ray detector, β-ray detector is carried out data transmission by data wire with main circuit board;It is characterized in that:Passing Heat preservation sandwich layer is respectively equipped with tank wall and chamber door in dynamic case, in transmission case rear wall constant temperature heating device, the constant temperature are provided with Heater includes temperature sensor, controller, fin and fan, and fan is arranged on fin rear, temperature sensor By being turned on and off for the temperature feedback of collection to controller, controller control fin and fan.
2. constant temperature particle concentration analyzer according to claim 1, it is characterised in that the heat preservation sandwich layer and tank wall on chamber door Heat preservation sandwich layer fits face for inclined plane, and seamless laminating.
3. constant temperature particle concentration analyzer according to claim 1, it is characterised in that the heat preservation sandwich layer is using insulation One kind in plate, foaming polyurethane plastic foams, vacuum heat insulation tube.
4. constant temperature particle concentration analyzer according to claim 1, it is characterised in that pass through on the rear wall of the electric cabinet Bracket is provided with laser method acquisition module, and laser method acquisition module is embedded in main circuit board, by entering between data wire and main circuit board Row data transfer;Laser method acquisition module top is provided with laser method sampling head, and the sampling head is located at after β ray method sampling heads Side.
5. a constant temperature particle concentration analyzer according to claim 4, it is characterised in that the laser method sampling head includes Support seat, air inlet pipe and transition body, the support base is fixed on box top wall, and air inlet pipe lower end is fixed in support base, wears Enter box house to be connected with laser method acquisition module;
Air inlet pipe upper end passes through and protrudes from top surface on transition body, and the lower end of the transition body sidewall is provided with equal intervals screw, Dust cap is fastened between transition volume surrounding and transition body sidewall has gap;
Top surface is fixed with screen pack on described transition body, and screen pack is less than air inlet pipe port, and screen pack is inscribed within dust cover.
6. constant temperature particle concentration analyzer according to claim 5, it is characterised in that the air inlet pipe include air inlet, The diameter for walking tracheae and gas outlet, the air inlet and gas outlet is respectively less than away TD.
7. constant temperature particle concentration analyzer according to claim 5, it is characterised in that the transition body is from the bottom to top successively Including column base, round platform transition seat and the column seat of honour, base diameter is more than seat of honour diameter.
8. constant temperature particle concentration analyzer according to claim 1, it is characterised in that running part includes master in transmission case Driving wheel, driven pulley, fixed seat and hold down gag, are provided with sampling paper tape, the β-ray detector between driving wheel and driven pulley In the top of fixed seat, the detecting head of detector is contacted over through fixed seat with sampling paper tape, and radiation is provided with hold down gag Source, with sampling paper tape below contact, driving wheel rotarily drive paper tape move forward a station distance, it is ensured that β-ray detector and Sampling paper tape between radioactive source is totally pollution-free.
9. constant temperature particle concentration analyzer according to claim 1, it is characterised in that be provided between the chamber door and casing Tensioning buckle.
10. constant temperature particle concentration analyzer according to claim 1, it is characterised in that the bottom half is provided with anti-skidding Footing.
CN201621005532.5U 2016-08-31 2016-08-31 Constant temperature particulate matter determination appearance Active CN206177762U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621005532.5U CN206177762U (en) 2016-08-31 2016-08-31 Constant temperature particulate matter determination appearance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621005532.5U CN206177762U (en) 2016-08-31 2016-08-31 Constant temperature particulate matter determination appearance

Publications (1)

Publication Number Publication Date
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Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107966332A (en) * 2017-11-21 2018-04-27 宇星科技发展(深圳)有限公司 Particulate matter detection means and its circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107966332A (en) * 2017-11-21 2018-04-27 宇星科技发展(深圳)有限公司 Particulate matter detection means and its circuit

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