CN2800273Y - Sampling and measuring integrated apparatus for measuring dust concentration by beta ray absorption method - Google Patents
Sampling and measuring integrated apparatus for measuring dust concentration by beta ray absorption method Download PDFInfo
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- CN2800273Y CN2800273Y CN 200520030868 CN200520030868U CN2800273Y CN 2800273 Y CN2800273 Y CN 2800273Y CN 200520030868 CN200520030868 CN 200520030868 CN 200520030868 U CN200520030868 U CN 200520030868U CN 2800273 Y CN2800273 Y CN 2800273Y
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Abstract
The utility model relates to a sampling and measuring integrated device, which is used for measuring dust concentration with a beta ray absorption method. The device is provided with a sampling and measuring seat, and a slideway which is used for inserting and pulling out a sampling clamp is arranged in the sampling and measuring seat; a detecting channel and a sampling channel are arranged along the slideway, wherein both sides of the inner slideway of the detecting channel are respectively provided with radioactive source and a detector which are arranged on the same axle wire; a sampling sleeve tube and an air outlet mouth are respectively arranged on both sides of the slide way in the sampling channel; the axle wire of the sampling sleeve tube and the axle wire of the inner cavity of the air outlet mouth are on the same straight line; the sampling sleeve tube is glidingly assembled in a fixed sleeve which is arranged on the sampling and measuring seat, a return spring which pushes and presses the sampling sleeve tube toward the direction of the slideway is assembled outside the sampling sleeve tube, and the outer end of the sampling sleeve tube is provided with a sampling head. The device combines sampling and measurement into a whole, and effectively prevents the phenomenon of powder dust dropping off because of long range movement of filter membranes with powder dust so as to reduce the artificial errors of measurement and operation time; data can be quickly read to timely monitor dust concentration.
Description
Technical field
The utility model relates to a kind of β of being used for radiation absorption method and measures the sampling of dust concentration, measures integrated apparatus.
Background technology
The device of the measurement dust concentration of using always has the powder concentration measurement instrument that our company produces at present, and it is to utilize the direct monitoring results of low energy beta rays absorption process place dust concentration.Utilize the filter membrane geometrical clamp, in use, the filter membrane clip of blank is put into the instrument right side to be measured, after recording blank filter membrane quality, filter membrane clip is taken out, be placed on air intake opening place, the left side sampling of filter membrane, after sampling finishes, to take out with the filter membrane clip of dirt again, be placed on the measured place, right side, by dust content in radiographic source and the detector unit of the measuring air.Though this kind structure can sample, measure the concentration of dust effectively, but have following shortcoming in use: (1) is in the process of sampling and measurement, need repeatedly filter membrane clip to be taken out, puts into, make the dust on the filter membrane phenomenon occur shaking off easily like this, make measurement result not accurate enough, make troubles to the operator simultaneously; (2) because sampling and measurement are at end, make the volume of instrument bigger, it is not too convenient to carry.
In addition, our company has also developed the higher dust sampling of a kind of measuring accuracy, has measured integrated apparatus, and this device mainly is made up of cavity, commentaries on classics core, radioactive source, detector, and vertical turn is equipped with the commentaries on classics core in the circle hole shape cavity of two passage infalls of cavity.Very convenient when this kind structure is used, the sampling dust on the sampling folder can directly move from sampling to measure, avoided the sampling dust come off and artificial plug process in the error brought of human factor, improved measuring accuracy widely.But because the position of rotation problem of rotation sampling folder, make between radioactive source, dust measuring filter membrane, the detector apart from bigger, cause radiator beta-ray dosage must just can reach very greatly the employed precision of instrument and since detector and dust measuring filter membrane apart from far away, make the β emissive source produce a large amount of secondaries and launch particle, cause between the measurement of detector and the actual value and produce certain error.In addition in use, owing to change the rotation of core, might cause the wearing and tearing of changeing core, dust uniformity coefficient in the time of can having influence on sampling error and filter membrane sampling to a certain extent.
The utility model content
The purpose of this utility model is to provide a kind of sampling, measurement integrated apparatus of the β of being used for radiation absorption method measurement dust concentration, to improve the accuracy of measuring greatly.
In order to achieve the above object, the technical solution of the utility model has been to adopt a kind of β of being used for radiation absorption method to measure the sampling of dust concentration, measure integrated apparatus, this device is provided with the reconnaissance seat, be provided with slideway in the reconnaissance seat in order to plug sampling folder, be provided with detection channels and sampling channel along slideway, detection channels inner slide both sides are respectively equipped with radioactive source and detector, both are on the same axis, be respectively equipped with sampling sleeve and outlet nozzle in the slideway both sides in the sampling channel, the axis of the axis of sampling sleeve and the inner chamber of outlet nozzle is on the same straight line, in the fixed cover that the sampling sleeve slidable fit is installed on the reconnaissance seat, sampling sleeve is equipped with outward the back-moving spring of sampling sleeve to the pushing of slideway direction, sampling head is equipped with in the outer end of sampling sleeve, on the inner face of sampling sleeve O-ring seal is housed, the week of the inner chamber of the outlet nozzle on the slideway bottom surface on O-ring seal opposite is along also being provided with a circle O-ring seal on the end face.
Aperture position one side at slideway is provided with an auto-closing light shield door, and the keying direction of light shield door is vertical with slideway, and the keying mouth place of light shield door is provided with slope, and this slope and slideway form " V " clevis angle, and the base of light shield door is provided with and compresses spring.
Centralized procurement sample of the present utility model, measure device in one, adopt the mode that directly moves the sampling folder, make between radiator beta-ray, dust measuring filter membrane, the detector position reach minimum, under the situation that guarantees same measuring accuracy, can make the dosage of radiator beta-ray reduce 57 times, and reduced widely, and under the condition of using same detector, measuring accuracy can be improved because the secondary that distance problem produces radiator beta-ray launches particle.In addition, adopt the mode that directly moves, plugs the sampling folder of the present utility model, the bigger detector of diameter (window diameter 50mm) can be installed be used for the detection of normal diameter filter membrane (as: diameter 40mm), the user need not the cutting filter membrane, convenient for users, the while has been improved the precision (about 10 times) of original instrument again greatly.Owing to optimized the structure of rotation sampling folder, make this device volume, weight not only greatly reduction and planform be fit to be installed on instrument internal more, instrument volume, weight further dwindled; Adopt structure of the present utility model, the user uses also easier, only need an action can finish the switching of the sampling and the state of measurement, and the location is also accurate than original device; The utility model significantly reduces the sampling error of instrument; The uniformity coefficient that filter membrane adheres to dust also improves simultaneously, has reduced the measuring error of instrument.
Adopt structure of the present utility model can realize portable type measuring, can on-the-spot directly reading, dust measuring minimum resolution and at utmost all increasing substantially, characteristics such as having accuracy of reading, measure rapidly, volume is little, in light weight, explosion-proof.This device centralized procurement sample, measurement one, effectively prevented because of growing the dust releasing phenomenon that the mobile filter membrane that has dust of distance causes, thereby reduced the measurement personal error, reduced the running time, reading of data is in time monitored dust concentration fast, has avoided the inconvenience that causes because of complicated operation simultaneously, structure also simplifies greatly, has reduced difficulty of processing and production cost.More be applicable to the adapted of portable dust instrument.
Description of drawings
Structural representation when Fig. 1 samples for the utility model;
Structural representation when Fig. 2 measures for the utility model.
Embodiment
The sampling that is used for β radiation absorption method measurement dust concentration of the present utility model, measure integrated apparatus and be provided with reconnaissance seat 5, be provided with vertical slideway in the reconnaissance seat 5 in order to plug sampling folder 7, on slideway one, one has respectively, and perpendicular detection channels and sampling channel (also can adopt fan-shaped slideway, detection channels and sampling channel that two arc angle places in fan-shaped slideway are perpendicular respectively, by the mode of rotation sampling folder filter membrane) to sampling channel and detection channels, detection channels inner slide both sides are respectively equipped with radioactive source 4 and detector 9, both are on the same axis, interior sampling sleeve and the outlet nozzle 10 of being respectively equipped with in the slideway both sides of sampling channel, the axis of the axis of sampling sleeve and the inner chamber of outlet nozzle is on the same straight line, in the fixed cover 1 that the sampling sleeve slidable fit is installed on the reconnaissance seat, sampling sleeve is equipped with outward the back-moving spring 2 of sampling sleeve to the pushing of slideway direction, sampling head 3 is equipped with in the outer end of sampling sleeve, O-ring seal 12 is housed on the inner face of sampling sleeve, the week of the inner chamber of the outlet nozzle on the slideway bottom surface on O-ring seal 12 opposites is along also being provided with a circle O-ring seal 13 on the end face, aperture position one side at slideway is provided with an auto-closing light shield door 8, the keying direction of light shield door 8 is vertical with slideway, the keying mouth place of light shield door 8 is provided with slope, this slope and slideway form " V " clevis angle, and the base of light shield door is provided with and compresses spring.
When using this device, only with hand is pulled out sampling head 3 forward just can insert the sampling folder 7 that front-end sampling hole portion clamps the dust measuring filter membrane, loosen sampling head 3, be installed in back-moving spring 2 on sampling head 3 sliding sleeves under the effect of resilience tension force, make the sampling head 3 of hollow press the periphery that sampling is pressed from both sides 7 front-end sampling hole portions and clamped the dust measuring filter membrane, because the sealing function of O-ring seal 12, the dust measuring filter membrane is sealed in the gas circuit of sampling head.Tested gas under the suction of instrument sampling pump through sampling head 3, sampling folder 7, sealing socket 11, discharge by outlet nozzle 10 at last.After finishing sampling process, when once more when pulling out sampling head 3, have the sampling folder 7 of dust outwards to extract a segment distance collection, loosen sampling head 3, sampling head 3 is pressed on the sealing socket 11 under the effect of spring 2 resilience tension force.With the plug in folder 7 of sampling of subordinate it is moved down gently and put in place, alignd with the central axis of radioactive source 4, detector 9 respectively in the central axis front and back that the dust measuring filter membrane of locating in 7 front-end sampling holes that has dust is pressed from both sides in sampling, can finish measuring process.
Its work can be divided into two states:
The sample states (see figure 1): sampling folder 7 is on the basis of the state of measurement, with pulling sampling head 3, expose the outside drawing sampling head 3 of part of cabinet, behind the resistance that has overcome back-moving spring 2, sampling head 3 moves forward under the guide effect of sliding sleeve, the end seal circle mouth of sampling head 3 separates with sealing socket, at this moment continues with the subordinate sampling folder 7 of inserting, touch up to the end of sampling folder 7 can not descend to insert on the locating surface of sampling seat 5 bottoms till.Loosen sampling head 3, the rear end face of sampling head 3 be pressed under the resilience tension force effect of spring 2 sampling folder 7 end thieff hatchs around, and the another side that makes thieff hatch has been pressed on the sealing socket 11, make the center pit of sampling head 3 form same axis with the thieff hatch of sampling folder 7 and the air hole of the outlet nozzle 10 on the sealing socket 11, can can finish sampling process by the potpourri of suction air and dust under the built-in sampling pump getter action of instrument.
Measurement state (see figure 2): when sampling folder 7 has at first overcome the frictional resistance of light shield door 8 when insert on the chute top of reconnaissance seat 5, continue to insert down up to sampling folder 7 ends touching on the locating surface on sliding sleeve top of sampling head 3, thereby can not continue to insert down.At this moment the end thieff hatch that accompanies the sampling folder 7 of dust measuring filter membrane is same axis with radioactive source 4, detector 9, and the work of single-chip microcomputer startup instrument can be finished measurement.
Being noted that above embodiment and non exhaustive, is not the qualification to the utility model protection domain yet, and any conversion of being done with the technological means that is equal to all should belong within the protection domain of the determined claim of the technical program.
Claims (2)
1, a kind of sampling that is used for β radiation absorption method measurement dust concentration, measure integrated apparatus, it is characterized in that: this device is provided with reconnaissance seat (5), be provided with slideway in the reconnaissance seat (5) in order to plug sampling folder (7), be provided with detection channels and sampling channel along slideway, detection channels inner slide both sides are respectively equipped with radioactive source (4) and detector (9), both are on the same axis, interior sampling sleeve and the outlet nozzle (10) of being respectively equipped with in the slideway both sides of sampling channel, the axis of the axis of sampling sleeve and the inner chamber of outlet nozzle is on the same straight line, in the fixed cover that the sampling sleeve slidable fit is installed on the reconnaissance seat (1), sampling sleeve is equipped with outward the back-moving spring (2) of sampling sleeve to the pushing of slideway direction, sampling head (3) is equipped with in the outer end of sampling sleeve, O-ring seal (12) is housed on the inner face of sampling sleeve, and the week of the inner chamber of the outlet nozzle on the slideway bottom surface on O-ring seal (12) opposite is along also being provided with a circle O-ring seal (13) on the end face.
2, the β radiation absorption method that is used for according to claim 1 is measured the sampling of dust concentration, is measured integrated apparatus, it is characterized in that: aperture position one side at slideway is provided with an auto-closing light shield door (8), the keying direction of light shield door (8) is vertical with slideway, the keying mouth place of light shield door (8) is provided with slope, this slope and slideway form " V " clevis angle, and the base of light shield door is provided with and compresses spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520030868 CN2800273Y (en) | 2005-06-03 | 2005-06-03 | Sampling and measuring integrated apparatus for measuring dust concentration by beta ray absorption method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520030868 CN2800273Y (en) | 2005-06-03 | 2005-06-03 | Sampling and measuring integrated apparatus for measuring dust concentration by beta ray absorption method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2800273Y true CN2800273Y (en) | 2006-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520030868 Expired - Fee Related CN2800273Y (en) | 2005-06-03 | 2005-06-03 | Sampling and measuring integrated apparatus for measuring dust concentration by beta ray absorption method |
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| CN (1) | CN2800273Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949785A (en) * | 2010-09-30 | 2011-01-19 | 郑州市光力科技发展有限公司 | Dust sampling and measuring device |
| CN102419296A (en) * | 2011-08-19 | 2012-04-18 | 苏州亿利安机电科技有限公司 | Direct-reading dust concentration measuring instrument |
| CN103604732A (en) * | 2013-11-25 | 2014-02-26 | 中煤科工集团重庆研究院有限公司 | Integrated mechanism for collecting and measuring dust |
| CN108181216A (en) * | 2018-01-16 | 2018-06-19 | 青岛和诚环保科技有限公司 | β ray Apparatus for Dust Content in Stack |
| CN109444012A (en) * | 2018-12-27 | 2019-03-08 | 常熟市德虞矿山机电有限公司 | A kind of detection device for direct-reading dust determination instrument |
| CN113959891A (en) * | 2021-10-23 | 2022-01-21 | 浙江必利夫检测科技有限公司 | Be applied to occupational health short-term test instrument |
-
2005
- 2005-06-03 CN CN 200520030868 patent/CN2800273Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101949785A (en) * | 2010-09-30 | 2011-01-19 | 郑州市光力科技发展有限公司 | Dust sampling and measuring device |
| CN101949785B (en) * | 2010-09-30 | 2012-05-30 | 郑州光力科技股份有限公司 | Dust sampling and measuring device |
| CN102419296A (en) * | 2011-08-19 | 2012-04-18 | 苏州亿利安机电科技有限公司 | Direct-reading dust concentration measuring instrument |
| CN103604732A (en) * | 2013-11-25 | 2014-02-26 | 中煤科工集团重庆研究院有限公司 | Integrated mechanism for collecting and measuring dust |
| CN108181216A (en) * | 2018-01-16 | 2018-06-19 | 青岛和诚环保科技有限公司 | β ray Apparatus for Dust Content in Stack |
| CN108181216B (en) * | 2018-01-16 | 2023-09-22 | 青岛和诚环保科技有限公司 | Beta ray smoke tester |
| CN109444012A (en) * | 2018-12-27 | 2019-03-08 | 常熟市德虞矿山机电有限公司 | A kind of detection device for direct-reading dust determination instrument |
| CN113959891A (en) * | 2021-10-23 | 2022-01-21 | 浙江必利夫检测科技有限公司 | Be applied to occupational health short-term test instrument |
| CN113959891B (en) * | 2021-10-23 | 2024-04-12 | 浙江必利夫检测科技有限公司 | Be applied to occupational health short-term test instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEZHOU GUANGLI SCIENCE + TECHNOLOGY CO., LTD. Free format text: FORMER NAME: GUANGLI SCIENCE + TECHNOLOGY DEVELOPMENT CO., LTD., ZHENGZHOU |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 450001, No. 58, Ruida Road, hi tech Zone, Henan, Zhengzhou Patentee after: Zhengzhou GL Tech Company Address before: 450001, No. 58, Ruida Road, hi tech Zone, Henan, Zhengzhou Patentee before: Guangli Science & Technology Development Co., Ltd., Zhengzhou |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: 450001 Henan city of Zhengzhou province high tech Industrial Development Zone Long Chun Road No. 10 Patentee after: Zhengzhou GL Tech Company Address before: 450001, No. 58, Ruida Road, hi tech Zone, Henan, Zhengzhou Patentee before: Zhengzhou GL Tech Company |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060726 Termination date: 20140603 |