CN103091213A - Roll type paper feeding and sampling apparatus for radioactive aerosol continuous monitor - Google Patents
Roll type paper feeding and sampling apparatus for radioactive aerosol continuous monitor Download PDFInfo
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- CN103091213A CN103091213A CN2011103312779A CN201110331277A CN103091213A CN 103091213 A CN103091213 A CN 103091213A CN 2011103312779 A CN2011103312779 A CN 2011103312779A CN 201110331277 A CN201110331277 A CN 201110331277A CN 103091213 A CN103091213 A CN 103091213A
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Abstract
The invention relates to continuous monitoring of radioactive aerosols in the field of nuclear radiation detections, and specifically relates to a paper feeding and sampling apparatus for the radioactive aerosol monitor, which is capable of being used in marine environment. A filter paper tray of the paper feeding and sampling apparatus is composed of a roller pallet (19) and rollers (18). When the filter paper moves at a constant speed on the roll type filter paper tray at a certain speed, the filter paper is mainly influenced by two frictional forces, one is a rolling friction force between the filter paper and the rollers (18), the other is a sliding friction force between the rollers (18) the filter paper and the roller pallet (19), and a resultant force of the two frictional forces is far smaller than tensile strength of the filer paper after immersion, thereby guaranteeing that the filter paper is not broken even when the filter paper is affected with damp and even is wet in an extreme condition.
Description
Technical field
The present invention relates to the continuous monitoring of radioaerosol in the nuclear radiation detection field, be specially a kind of paper feed sampling apparatus that can be applicable to the radioaerosol monitor of maritime environment.
Background technology
The purpose of radioaerosol monitoring is in time to obtain to put aerocolloidal concentration information in air, for aerocolloidal purification and protection provide scientific basis, with protection of the environment safety and personnel health.The marine radioaerosol monitoring system of using not only will satisfy the requirement of land radioaerosol monitoring, also will satisfy the specific (special) requirements during sail, such as high humility, high salt fog, waterproof etc.
After existing land radioaerosol monitoring system is assembled on ship, generally can only meteorological, sea conditions preferably in situation start measure.Yet, when marine humidity is larger (such as sea fog is arranged, sea fog has solidifying water on equipment, and the foam of sea laps hull formation etc.), filter paper very easily makes moist or is drenched.When the start operation, under the effect of vacuum pump negative pressure, the frictional resistance that filter paper will be close to the straight filter paper of holder and tray paper dish is very large, easily causes filter paper to be broken when mobile.
Summary of the invention
The object of the invention is to make moist or drenched rear this practical problems of easily being broken for filter paper in radioaerosol monitoring system peculiar to vessel, provide a kind of frictional resistance less roller type paper feed sampling apparatus.
For achieving the above object, the present invention is by the following technical solutions:
The tray paper dish is paper tape kinematic train critical component, and effect is at sampling while paper feed, and the power of reducing friction ensures that filter paper is not broken.Under normal circumstances, the tray paper dish is as long as the smoother of polishing just can guarantee that filter paper is not broken.But when filter paper made moist, the tensile strength of filter paper descended, and friction factor increases, and the sampling resistance increases.Through test, 2
#Filter paper is (limiting case) after immersion, and its tensile strength only has 1.5kg, and friction factor reaches 0.85.For the sample tap of Φ 20, pressure reduction is 0.625kg/cm
2, the pressure of whole sample tap reaches 1.96kg.Add the damping of filter paper axle, whole resistance F
LBe 2.17kg, surpassed the tensile strength 1.5kg of filter paper.Even without the damping of filter paper axle, at the frictional resistance μ of thief hatch F
N1.67kg is also arranged, and this has also surpassed the tensile strength 1.5kg of filter paper.
In order to prevent that filter paper from not broken, must manage to reduce the damping of friction factor and the filter paper axle of filter paper.The damping minimum of filter paper axle is adjustable to 0.1kg, and frictional resistance can reduce by the mode that reduces filter paper tray paper dish friction factor.The present invention designs a kind of roller shaft type filter paper pallet, and roll shaft is selected steel.Filter paper leans against on roll shaft, when filter paper at the uniform velocity moves with certain speed, produces two friction force, i.e. force of sliding friction between force of rolling friction between filter paper and roll shaft and roll shaft and pedestal.Very I is ignoring for force of rolling friction between filter paper and roll shaft, and the force of sliding friction between roll shaft and pedestal is main frictional resistance.Show through experimental results, be 0.15 at slip coefficient of static friction and the kinetic friction coefficient between steel and steel in unlubricated situation, therefore its frictional resistance μ F
NBe only 0.25kg, filter paper axle resistance and frictional resistance sum (0.35kg) the tensile strength 1.5kg after filter paper immersion like this.By roll shaft filter paper tray design, filter paper can be ensured in the situation that make moist and do not broken.
Description of drawings
Fig. 1 is paper feed sampling apparatus one-piece construction schematic diagram.
In figure, 1 is cabinet; 2 is sampling line; 3 is detector; 4 are sampling filter paper; 5 is the strainer storehouse; 6 is flowmeter; 7 is aspiration pump; 8 for measuring control assembly; 9 is motor; 10 is sample bin; 11 is air stream outlet; 12 is the filter paper pallet; 13 is paper feeding roller; 14 is paper collecting roller; 15 is engaged wheel; 16 is driving wheel; 17 are the sampling casing.
Fig. 2 is roll shaft pallet body schematic diagram.
In figure, 6 is flowmeter; 18 is roller; 19 is the roller pallet.
Embodiment
As shown in Figure 1, motor 9 drives paper collecting roller 14 and rotates when beginning collection, and paper feeding roller 13 also begins to rotate, filter paper is from 5s, strainer storehouse, by passing between engaged wheel 15 and shell fragment, along transmitting steel band 4 and filter paper pallet 12, walk around driving wheel 16, finally enter collection storehouse 10.
During measurement, aspiration pump 7 is opened, and radioaerosol is entered by sampling casing 17, and enters sampling of aerosol unit (being filter paper pallet 12, detector 3, filter paper 4) along sampling line 2, then through gas meter 6, flows out by air stream outlet 11 at last.Can form negative pressure in pipeline when bleeding due to aspiration pump 7, cause filter paper 4 to be close to above filter paper pallet 12.Owing to having adopted the roller shaft type pallet body, as shown in Figure 2, because the rolling friction between the filter paper 4 that makes moist or drench and roller 18 is very little, and the tensile strength after filter paper immersion, thereby even if guaranteed filter paper in the situation that soak fully also and can not broken.
The roller shaft type filter paper pallet that the present invention adopts can significantly reduce the filter paper friction force that is subject in service, has solved the practical problems that in marine environment for use, filter paper is easily broken.
Claims (2)
1. the paper feed sampling apparatus of a roller shaft type radioactive aerosol continuous monitor is characterized in that: the filter paper pallet of described paper feed sampling system is made of roller pallet (19) and roller (18).
2. the paper feed sampling apparatus of a kind of roller shaft type radioactive aerosol continuous monitor as claimed in claim 1, it is characterized in that it also comprises: when filter paper at the uniform velocity moves on roller shaft type filter paper pallet with certain speed, mainly be subject to the impact of two friction force, the one, the force of rolling friction between filter paper and running roller (18), the 2nd, the force of sliding friction between running roller (18) and roller pallet (19).These two friction force sums can ensure that less than the tensile strength after the filter paper immersion filter paper is making moist, and can not broken under the extreme case that is even drenched yet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103312779A CN103091213A (en) | 2011-10-27 | 2011-10-27 | Roll type paper feeding and sampling apparatus for radioactive aerosol continuous monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103312779A CN103091213A (en) | 2011-10-27 | 2011-10-27 | Roll type paper feeding and sampling apparatus for radioactive aerosol continuous monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103091213A true CN103091213A (en) | 2013-05-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103312779A Pending CN103091213A (en) | 2011-10-27 | 2011-10-27 | Roll type paper feeding and sampling apparatus for radioactive aerosol continuous monitor |
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| Country | Link |
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| CN (1) | CN103091213A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103543462A (en) * | 2013-10-17 | 2014-01-29 | 中国人民解放军海军工程大学 | Nuclide recognition device of radioactive aerosol |
| WO2014191411A1 (en) * | 2013-05-28 | 2014-12-04 | Tech Systemes | Collection system and use of said system |
| CN104360371A (en) * | 2014-11-12 | 2015-02-18 | 中国人民解放军63653部队 | High-sensitivity radioactive aerosol continuous monitor |
| CN105466733A (en) * | 2015-12-16 | 2016-04-06 | 中国船舶重工集团公司第七一九研究所 | Marching type high flow aerosol sampling device |
| CN105699264A (en) * | 2016-03-17 | 2016-06-22 | 佛山市南华仪器股份有限公司 | Paper advance mechanism for filter paper type particle detecting and filter paper type particle detecting method |
| CN114130097A (en) * | 2021-12-09 | 2022-03-04 | 连云港冠昕医药科技有限公司 | Purification method and device for preparing L-5-methyl tetrahydrocalcium folate |
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| CN2789889Y (en) * | 2005-03-25 | 2006-06-21 | 中国辐射防护研究院 | Radioactive aerosol continuous paper-feeding detecting apparatus |
| CN2856982Y (en) * | 2005-12-23 | 2007-01-10 | 中国辐射防护研究院 | Continuous sampling paper feeding integrated device for radiative aerosol |
| CN2924511Y (en) * | 2006-04-27 | 2007-07-18 | 北京市射线应用研究中心 | Aerosol sampling-measuring device |
| CN101122556A (en) * | 2007-05-29 | 2008-02-13 | 合肥霍金光电科技有限公司 | Atmosphere particles- carbon black aerosol quality and concentration monitor and monitoring method |
| CN101975730A (en) * | 2010-10-25 | 2011-02-16 | 安徽蓝盾光电子股份有限公司 | Beta ray method PM10 on-line monitor sampling channel device |
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2011
- 2011-10-27 CN CN2011103312779A patent/CN103091213A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2789889Y (en) * | 2005-03-25 | 2006-06-21 | 中国辐射防护研究院 | Radioactive aerosol continuous paper-feeding detecting apparatus |
| CN2856982Y (en) * | 2005-12-23 | 2007-01-10 | 中国辐射防护研究院 | Continuous sampling paper feeding integrated device for radiative aerosol |
| CN2924511Y (en) * | 2006-04-27 | 2007-07-18 | 北京市射线应用研究中心 | Aerosol sampling-measuring device |
| CN101122556A (en) * | 2007-05-29 | 2008-02-13 | 合肥霍金光电科技有限公司 | Atmosphere particles- carbon black aerosol quality and concentration monitor and monitoring method |
| CN101975730A (en) * | 2010-10-25 | 2011-02-16 | 安徽蓝盾光电子股份有限公司 | Beta ray method PM10 on-line monitor sampling channel device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014191411A1 (en) * | 2013-05-28 | 2014-12-04 | Tech Systemes | Collection system and use of said system |
| FR3006446A1 (en) * | 2013-05-28 | 2014-12-05 | Tech Systemes | SYSTEM FOR SAMPLING AND USING THE SYSTEM |
| CN103543462A (en) * | 2013-10-17 | 2014-01-29 | 中国人民解放军海军工程大学 | Nuclide recognition device of radioactive aerosol |
| CN104360371A (en) * | 2014-11-12 | 2015-02-18 | 中国人民解放军63653部队 | High-sensitivity radioactive aerosol continuous monitor |
| CN105466733A (en) * | 2015-12-16 | 2016-04-06 | 中国船舶重工集团公司第七一九研究所 | Marching type high flow aerosol sampling device |
| CN105699264A (en) * | 2016-03-17 | 2016-06-22 | 佛山市南华仪器股份有限公司 | Paper advance mechanism for filter paper type particle detecting and filter paper type particle detecting method |
| CN105699264B (en) * | 2016-03-17 | 2019-04-26 | 佛山市南华仪器股份有限公司 | The paper advance mechanism and filter paper type particle detection method of filter paper type particle analyte detection |
| CN114130097A (en) * | 2021-12-09 | 2022-03-04 | 连云港冠昕医药科技有限公司 | Purification method and device for preparing L-5-methyl tetrahydrocalcium folate |
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Application publication date: 20130508 |