CN101839843A - Calibration device of high-temperature laser dust particle counter - Google Patents
Calibration device of high-temperature laser dust particle counter Download PDFInfo
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- CN101839843A CN101839843A CN 201010180212 CN201010180212A CN101839843A CN 101839843 A CN101839843 A CN 101839843A CN 201010180212 CN201010180212 CN 201010180212 CN 201010180212 A CN201010180212 A CN 201010180212A CN 101839843 A CN101839843 A CN 101839843A
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Abstract
The invention relates to a calibration device of a high-temperature laser dust particle counter, comprising a heat resistant cleaning blowing-in mechanism, a standard particle buffer mechanism, an electric heating mechanism and a temperature control mechanism. The heat resistant cleaning blowing-in mechanism feeds air into a buffer tank through a high-temperature filter, the electric heating mechanism is started to heat the clean air in the buffer tank, and the heating temperature is controlled to a set valve by the temperature control mechanism. Standard particles enter the buffer tank through a particle sample sending tube to be mixed with the clean and high-temperature air in the buffer tank, and the mixed air flow is fed into a counter for the particles to be measured through the particle sample sending tube to be measured and calibrated. In the invention, a high-temperature clean environment is simulated on site, the standard particles are infused to the high-temperature environment for mixing, and the mixed particles are supplied to the high-temperature laser dust particle counter to be detected, thereby the measuring precision of the counter is corrected and calibrated, the quality of the counter product when leaving a factory is ensured, and the production efficiency is improved.
Description
Technical field
The present invention relates to the detection caliberating device of a kind of air cleaning field high-temperature laser dust particle counter.
Background technology
Laser dust particle counter is used for measuring dust particle size and the number in the clean environment unit volume air, and it is widely used in departments such as electronics, optics, chemistry, food, cosmetics, medical and health, biological products, Aero-Space.Improvement along with field technological processes such as electronics, pharmacy, space flight, many technologies must be carried out under high temperature cleaning oven or high temperature clean tunnel, can this environment guarantee the cleanliness factor requirement, after under the environment cools such as present detection mode is, utilize laser dust particle counter to carry out normal temperature and detect.We know that the filtration efficiency of filtrator can change along with the change of temperature, and the normal temperature detection just can not accurately reflect truth, so the exploitation of high-temperature laser dust particle counter occurred.If yet the demarcation of high-temperature laser dust particle counter may produce certain error by existing normal temperature demarcation, thereby the precision of high-temperature laser dust particle counter is produced certain influence, and the application just is being based on above-mentioned background and the development and Design of carrying out.
Summary of the invention
The present invention seeks to provides a kind of effectively simulated field high temperature clean environment that thereby the caliberating device of suitable detection particle is provided for high-temperature laser dust particle counter to be detected in order to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution used in the present invention is: a kind of calibration device of high-temperature laser dust particle counter, and it comprises,
High temperature resistant clean wind pushing mechanism, described high temperature resistant clean wind pushing mechanism comprise plenum chamber, be arranged on high temperature resistant blower fan in the plenum chamber, be arranged in the plenum chamber and be positioned at the high-temperature resistant filter of high temperature resistant blower fan below;
The standard particle buffer gear, it comprise be arranged on described plenum chamber below and with described plenum chamber mutually the baffle-box that is communicated with of gas, be separately positioned in the baffle-box and an end exposes particle sample presentation pipe and particle stopple coupon outside baffle-box;
Electrical heating mechanism, it comprises that holder, an end are positioned at the many heating tubes that the holder other end stretches into described baffle-box;
Temperature control device, it comprises temperature sensor that is used to respond to buffering the temperature inside the box and the controller that is connected with the temperature sensor output terminal;
Described high temperature resistant blower fan is sent in the baffle-box after air is filtered by high-temperature filter, starting electrical heating mechanism heats the pure air in the baffle-box, the temperature of heating is controlled to setting value by temperature control device, standard particle enters baffle-box by particle sample presentation pipe and mixes with clean high temperature air in the baffle-box, and mixed air communication is crossed the particle stopple coupon and sent into corpuscular counter to be measured and measure calibration.
In a kind of mode to enforcement that technique scheme is optimized, be provided with the surge flask that is connected with baffle-box in the described baffle-box, the described particle sample presentation pipe and the particle stopple coupon other end are plugged in respectively in the described surge flask, because surge flask is set in baffle-box, the inner chamber of surge flask is much smaller than the space of baffle-box, thereby make the mix particles zone diminish, can effectively control Particle Density, guarantee supply equipment under test with the mixed particle effective dose of high-temperature gas.
Further, described baffle-box internal gas pressure is a malleation, the outer backwind tube that is provided with between described baffle-box bottom and the plenum chamber top, because in the baffle-box is malleation, the hot-air of discharging returns in the plenum chamber by backwind tube, use through sending into once more in the baffle-box after the filtrator filtration, realize recycling.
Described high temperature resistant blower fan is a frequency conversion fan, thereby can regulate the size of air quantity according to the tested counter requirement of different sampling quantities.
Described plenum chamber and baffle-box are seal case.
The outside of described baffle-box also coats one deck insulating.
Described controller is provided with display operating panel.
Because the utilization of technique scheme, the present invention compared with prior art has following advantage: caliberating device of the present invention is by simulated field high temperature clean environment, standard particle injected offer high-temperature laser dust particle counter to be detected after this hot environment is mixed, thereby the measuring accuracy to counter is proofreaied and correct demarcation, guarantee the outgoing of counter product, improved production efficiency.
Description of drawings
Accompanying drawing 1 is the front elevation of caliberating device of the present invention (broken section);
Accompanying drawing 2 is the vertical view of caliberating device of the present invention;
Accompanying drawing 3 is the side view of caliberating device of the present invention;
Accompanying drawing 4 has the surge flask structural representation of sample presentation pipe and stopple coupon for the present invention;
Wherein: 1, high temperature resistant clean wind pushing mechanism; 11, plenum chamber; 12, high temperature resistant blower fan; 13, high-temperature resistant filter;
2, standard particle buffer gear; 21, baffle-box; 22, surge flask; 23, particle sample presentation pipe; 24, particle stopple coupon; 25, backwind tube; 26, insulating;
3, electrical heating mechanism; 31, holder; 32, heating tube;
4, temperature control device; 41, temperature sensor; 42, controller;
Embodiment
Below in conjunction with accompanying drawing, describe the particular content of enforcement preferred for this invention in detail for example:
Caliberating device as shown in Figures 1 to 3, it is mainly by four most of compositions, be respectively high temperature resistant clean wind pushing mechanism 1, standard particle buffer gear 2, electrical heating mechanism 3 and temperature control device 4 and form, will the concrete structure composition of each funtion part be elaborated below:
The plenum chamber 11 that described high temperature resistant clean wind pushing mechanism 1 is mainly made by stainless steel material, be arranged on the high temperature resistant blower fan 12 in the plenum chamber 11 and be arranged in the plenum chamber 11 and the high-temperature resistant filter 13 that is positioned at high temperature resistant blower fan 12 belows is formed, wherein, high temperature resistant blower fan 12 adopts frequency conversion fan, thereby can be according to the tested high-temperature laser dust particle counter requirement of different sampling quantities, to regulate the size of air quantity.Filtrator 13 is an efficient filter paper, can select filtration efficiency up to hundred grades, thereby guarantee the cleanliness factor of air after filtering.
Described standard particle buffer gear 2 mainly by stainless steel baffle-box 21 with certain accommodation space, be arranged on surge flask 22 in the baffle-box 21 and an end and stretch in the surge flask 22 other ends and reveal the particle sample presentation pipe 23 and the particle stopple coupon 24 that are located at baffle-box 21 outsides and form, baffle-box 21 can offer corresponding hole respectively with plenum chamber 11 joints so that plenum chamber 11 and baffle-box 21 mutually gas be communicated with, thereby can enter in the baffle-box 21 through the clean gas flow after filtering.Structural relation between surge flask 22 and particle sample presentation pipe 23 and the particle stopple coupon 24 as shown in Figure 4, the volume of surge flask 22 is much smaller than the volume of baffle-box 21, it has be connected with baffle-box 21 uncovered, particle sample presentation pipe 23 and particle stopple coupon 24 are arranged on the uncovered both sides of surge flask 22 symmetrically, standard particle is sent in the surge flask 22 by particle sample presentation pipe 23 from the outside of baffle-box 21, after gas in particle and the surge flask 22 mixes, export tested instrument to carry out measurement update by particle stopple coupon 24 again.
In order to make the gas in the baffle-box 21 to be recycled, in the baffle-box 21 is malleation, and at baffle-box 21 bottoms and plenum chamber 11 top peripheral hardwares one backwind tube 25, by backwind tube 25, the air that is discharged from the baffle-box 21 is back in the plenum chamber 11, the filtration of the filtrator 13 by plenum chamber 11, clean air enter in the baffle-box 21 once more to utilize.
Because medium is an air in plenum chamber 11 and the baffle-box 21, therefore, described plenum chamber 11 and baffle-box 21 should seal setting.
Described electrical heating mechanism 3 comprises the holder 31 that is arranged on the above-mentioned high temperature resistant clean wind pushing mechanism 1 and standard buffer gear 2 outsides, is installed in the many heating tubes 32 on the holder 31, the other end of each heating tube 32 stretches in the described baffle-box 21, thereby when electrical heating mechanism 3 is switched on, heating tube 32 gets electric heating, the space of heat diffusion to the baffle-box 21 makes that the air in the baffle-box 21 are heated up.
In order to control the heating-up temperature of electrical heating mechanism 3, the present invention also is provided with temperature control equipment 4, this temperature control equipment is mainly formed by being arranged on temperature sensor 41 in the baffle-box 21 and the controller 42 that is installed on the baffle-box 21, controller 42 is mainly used in the electric signal that receives temperature sensor 41 outputs, and set according to the desired temperature of different counters, temperature in baffle-box 21 reaches design temperature, stops the heating of electrical heating mechanism 3; Temperature in baffle-box 21 is lower than design temperature, starts electrical heating mechanism 3 and continues heating, realizes the effective control to pure air temperature in the baffle-box.For more visual control, on controller, also be provided with display operating panel.
Because during the inherent work of baffle-box 21 is high temperature, in order further to keep temperature, also coat one deck insulating 26 in the periphery of baffle-box 21.
Above-mentioned each ingredient structure of the present invention is described in detail, will describes the principle of work of the present invention and the course of work below:
When needs are measured timing signal to detected high temperature airborne particle counter, at first, start the high temperature resistant blower fan 12 of high temperature resistant clean wind pushing mechanism 1, airflow enters in the plenum chamber 11 according to Fig. 1 direction, after entering air in the plenum chamber 11 and filtering by filtrator 13, clean air-flow is admitted in the baffle-box 21, start electrical heating mechanism 3, pure air in 32 pairs of baffle-boxs of heating tube 21 heats, because surge flask 22 is connected with baffle-box 21, so also be full of the high temperature pure air in the surge flask 22, the temperature in the baffle-box 21 is fed back by temperature sensor 41, and controls temperature to setting value by controller 42.Then, standard particle is delivered in the surge flask 22 by particle sample presentation pipe 23, mixes with clean high temperature air in it, mixed air communication is crossed stopple coupon 24 and is sent into by test examination instrument and measure calibration.Because baffle-box is a malleation,, the hot-air of discharge filters use once more in addition thereby being back into plenum chamber by backwind tube.
Caliberating device of the present invention has been simulated by the high temperature of pyrometry cleaning oven or high temperature clean tunnel clean on-the-spot, send into tested counter by being fed in of standard particle again after the high-temperature area mixing cushions and carry out calibrate, counter before dispatching from the factory is proofreaied and correct accurately, guaranteed the to dispatch from the factory quality of product has higher value.
The foregoing description only is explanation technical conceive of the present invention and characteristics; its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this; can not limit protection scope of the present invention with this; all equivalences that spirit is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (7)
1. calibration device of high-temperature laser dust particle counter is characterized in that: it comprises,
High temperature resistant clean wind pushing mechanism (1), described high temperature resistant clean wind pushing mechanism (1) comprise plenum chamber (11), be arranged on high temperature resistant blower fan (12) in the plenum chamber (11), be arranged in the plenum chamber (11) and be positioned at the high-temperature resistant filter (13) of high temperature resistant blower fan (12) below;
Standard particle buffer gear (2), it comprise be arranged on described plenum chamber (11) below and with described plenum chamber (11) mutually the baffle-box (21) that is communicated with of gas, be separately positioned in the baffle-box (21) and an end exposes particle sample presentation pipe (23) and particle stopple coupon (24) outside baffle-box (21);
Electrical heating mechanism (3), it comprises that holder (31), an end are positioned at the many heating tubes (32) that holder (31) other end stretches into described baffle-box (21);
Temperature control device (4), it comprises and is used to respond to the temperature sensor (41) of the interior temperature of baffle-box (21) and the controller (42) that is connected with temperature sensor (41) output terminal;
Described high temperature resistant blower fan (12) is sent in the baffle-box (21) after air is filtered by high-temperature resistant filter (13), starting electrical heating mechanism (3) heats the pure air in the baffle-box (21), the temperature of heating is controlled to setting value by temperature control device (4), standard particle enters baffle-box (21) by particle sample presentation pipe (23) and mixes with clean high temperature air in the baffle-box (21), and mixed air communication is crossed particle stopple coupon (24) and sent into corpuscular counter to be measured and measure calibration.
2. calibration device of high-temperature laser dust particle counter according to claim 1, it is characterized in that: be provided with the surge flask (22) that is connected with baffle-box (21) in the described baffle-box (21), the described particle sample presentation pipe (23) and particle stopple coupon (24) other end are plugged in respectively in the described surge flask (22).
3. calibration device of high-temperature laser dust particle counter according to claim 1 and 2 is characterized in that: described baffle-box (21) internal gas pressure is a malleation, the outer backwind tube (25) that is provided with between described baffle-box (21) bottom and plenum chamber (11) top.
4. calibration device of high-temperature laser dust particle counter according to claim 1 is characterized in that: described high temperature resistant blower fan (12) is a frequency conversion fan.
5. calibration device of high-temperature laser dust particle counter according to claim 1 is characterized in that: described plenum chamber (11) is a seal case with baffle-box (21).
6. calibration device of high-temperature laser dust particle counter according to claim 1 or 5, it is characterized in that: the outside of described baffle-box (21) also coats one deck insulating (26).
7. calibration device of high-temperature laser dust particle counter according to claim 1 is characterized in that: described controller (42) is provided with display operating panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101802124A CN101839843B (en) | 2010-05-24 | 2010-05-24 | Calibration device of high-temperature laser dust particle counter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101802124A CN101839843B (en) | 2010-05-24 | 2010-05-24 | Calibration device of high-temperature laser dust particle counter |
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| CN101839843A true CN101839843A (en) | 2010-09-22 |
| CN101839843B CN101839843B (en) | 2011-10-26 |
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| CN2010101802124A Expired - Fee Related CN101839843B (en) | 2010-05-24 | 2010-05-24 | Calibration device of high-temperature laser dust particle counter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675473A (en) * | 2016-01-07 | 2016-06-15 | 苏州苏信环境科技有限公司 | Tester for purifier |
| CN106644863A (en) * | 2016-10-27 | 2017-05-10 | 湖北建研测控科技有限公司 | Particulate matter calibration cabin |
| CN112206591A (en) * | 2020-09-24 | 2021-01-12 | 羊彬 | Civil aircraft accessory detection workbench |
| CN114295534A (en) * | 2022-01-27 | 2022-04-08 | 江苏君成工业智能科技有限公司 | Easy-to-operate dust particle counter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5686650A (en) * | 1996-07-18 | 1997-11-11 | Suslavich; Robert V. | Apparatus and method for calibrating particle counters |
| US7536898B2 (en) * | 2007-08-09 | 2009-05-26 | The United States Of America As Represented By The Secretary Of The Army | Quantitative aerosol dilution system |
-
2010
- 2010-05-24 CN CN2010101802124A patent/CN101839843B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5686650A (en) * | 1996-07-18 | 1997-11-11 | Suslavich; Robert V. | Apparatus and method for calibrating particle counters |
| US7536898B2 (en) * | 2007-08-09 | 2009-05-26 | The United States Of America As Represented By The Secretary Of The Army | Quantitative aerosol dilution system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105675473A (en) * | 2016-01-07 | 2016-06-15 | 苏州苏信环境科技有限公司 | Tester for purifier |
| CN106644863A (en) * | 2016-10-27 | 2017-05-10 | 湖北建研测控科技有限公司 | Particulate matter calibration cabin |
| CN106644863B (en) * | 2016-10-27 | 2023-06-16 | 云沛科技集团有限公司 | Particulate matter calibration bin |
| CN112206591A (en) * | 2020-09-24 | 2021-01-12 | 羊彬 | Civil aircraft accessory detection workbench |
| CN114295534A (en) * | 2022-01-27 | 2022-04-08 | 江苏君成工业智能科技有限公司 | Easy-to-operate dust particle counter |
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| CN101839843B (en) | 2011-10-26 |
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