CN111766186B - β-ray dust automatic monitor capable of real-time measurement - Google Patents
β-ray dust automatic monitor capable of real-time measurement Download PDFInfo
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- CN111766186B CN111766186B CN202010771632.3A CN202010771632A CN111766186B CN 111766186 B CN111766186 B CN 111766186B CN 202010771632 A CN202010771632 A CN 202010771632A CN 111766186 B CN111766186 B CN 111766186B
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- 239000000428 dust Substances 0.000 title claims abstract description 28
- 230000005250 beta ray Effects 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 title claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 230000002285 radioactive effect Effects 0.000 claims abstract description 22
- 238000007599 discharging Methods 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000002347 injection Methods 0.000 claims description 13
- 239000007924 injection Substances 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 5
- 230000005855 radiation Effects 0.000 claims description 5
- 238000013016 damping Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims 1
- 239000013618 particulate matter Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 230000003796 beauty Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 238000000790 scattering method Methods 0.000 description 2
- OKTJSMMVPCPJKN-NJFSPNSNSA-N Carbon-14 Chemical compound [14C] OKTJSMMVPCPJKN-NJFSPNSNSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
- G01N15/0637—Moving support
- G01N15/0643—Moving support of the filter type
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N2015/0662—Comparing before/after passage through filter
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- Chemical & Material Sciences (AREA)
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- Physics & Mathematics (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measurement Of Radiation (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
本发明提供了一种可实时测量的β射线扬尘自动监测仪，涉及扬尘环境监测技术领域；包括进样管路、检测管路、取样装置、放射源、探测装置、走纸装置；进样管路具有第一进料端和第一出料端，检测管路具有第二进料端和第二出料端；第一进料端与取样装置相连接，第一出料端与第二进料端相对设置；放射源位于进样管路内；探测装置位于第二进料端内，并与放射源相对设置；滤纸带位于第一出料端和第二进料端之间，并沿预设方向移动。本发明把放射源设置在进样管路中，将探测装置设置在检测管路中，滤纸带位于两者之间，测量时无需来回走纸，样品采集和样品测量可同步进行，可实现对颗粒物的实时连续监测，而且简化了结构。
The present invention provides a beta-ray dust automatic monitor capable of real-time measurement, and relates to the technical field of dust environment monitoring; the apparatus comprises a sampling pipeline, a detection pipeline, a sampling device, a radioactive source, a detection device, and a paper feeding device; the sampling pipeline has a first feeding end and a first discharging end, and the detection pipeline has a second feeding end and a second discharging end; the first feeding end is connected to the sampling device, and the first discharging end and the second feeding end are arranged oppositely; the radioactive source is located in the sampling pipeline; the detection device is located in the second feeding end and is arranged oppositely to the radioactive source; the filter paper belt is located between the first discharging end and the second feeding end, and moves along a preset direction. The present invention arranges the radioactive source in the sampling pipeline, arranges the detection device in the detection pipeline, and arranges the filter paper belt between the two. There is no need to feed the paper back and forth during measurement, and sample collection and sample measurement can be carried out simultaneously, so that real-time continuous monitoring of particulate matter can be realized, and the structure is simplified.
Description
Technical Field
The invention relates to the technical field of dust environment monitoring, in particular to a beta-ray dust automatic monitor capable of measuring in real time.
Background
Dust pollution is an important source of atmospheric particulate pollution, is suspended in the atmospheric environment, has extremely serious influence on the quality of the air, and is the most important pollutant in the current air quality detection. The environment sanitation and the beauty of the environment are related, and the environment sanitation and the beauty of the environment are also greatly harmful to the life quality and the health of people, so that the monitoring work of the atmospheric particulate matters is one of the focuses of people, and the on-line monitoring of the dust pollution sources is of great significance to the control of the atmospheric particulate matters pollution.
The current technical methods for dust monitoring comprise a weight method, an oscillating balance method, a laser scattering method, a beta-ray method and the like. The dust monitoring method is a light scattering method and a beta-ray method, the monitoring error of the laser scattering method is large, the mass concentration monitored by the beta-ray method is high, the relative error of the result is small, the operation and the maintenance are easy, and the measuring precision and the sensitivity are high.
However, the particle collection and detection collection of most of the existing beta-ray monitors are carried out separately, the measurement accuracy is affected by the misalignment of a particle collection area and a detection collection area on a filter paper belt, the filter paper belt needs to be moved back and forth, only intermittent test can be carried out, the minimum measurable hour average value cannot be measured in real time, and in addition, the requirement on the control accuracy of back and forth paper feeding is high due to the fact that the back and forth paper feeding is needed, and therefore the structure design is complex.
Disclosure of Invention
The invention aims to provide a beta-ray dust emission automatic monitor capable of measuring in real time, which aims to solve the problems that an existing instrument needs to move a filter paper tape back and forth, cannot measure in real time, is complex in structural design and the like.
In order to solve the technical problems, the invention provides a beta-ray dust emission automatic monitor capable of measuring in real time, which comprises the following specific technical scheme:
The beta-ray dust emission automatic monitor capable of measuring in real time comprises a sample injection pipeline, a detection pipeline, a sampling device, a radioactive source, a detection device and a paper feeding device;
The sample injection pipeline is provided with a first feeding end and a first discharging end, and the detection pipeline is provided with a second feeding end and a second discharging end;
The first feeding end is connected with the sampling device, and the first discharging end and the second feeding end are oppositely arranged;
The radioactive source is positioned in the sample injection pipeline;
The detection device is positioned in the second feeding end and is arranged opposite to the radioactive source;
the paper feeding device is characterized in that a paper filtering belt is arranged on the paper feeding device and is positioned between the first discharging end and the second feeding end, and the paper filtering belt can move along a preset direction under the driving of the paper feeding device.
Further, the paper feeding device comprises a paper feeding wheel, a first driving mechanism and a length detecting mechanism;
The paper feeding wheel is a damping wheel;
the first driving mechanism is connected with the paper feeding wheel and drives the paper feeding wheel to rotate;
the filter paper belt is wound on the paper feeding wheel, and one end of the filter paper belt is connected with the paper feeding wheel;
The length detection mechanism is used for detecting the walking length of the filter paper belt.
Further, the length detection mechanism comprises a first tensioning wheel and an encoder;
the first tensioning wheel is positioned above the paper feeding wheel and is used for tensioning the filter paper belt between the paper feeding wheel and the paper feeding wheel;
The encoder is mounted on the first tensioner.
Further, the device also comprises a second tensioning wheel;
The second tensioning wheel is located above the paper feeding wheel and is used for tensioning the filter paper belt between the first tensioning wheel and the paper feeding wheel.
Further, an air pump and a flowmeter are arranged on the detection pipeline, and a sensor group is arranged in the detection pipeline.
Further, the sensor group includes at least one of a temperature sensor, a humidity sensor, and a pressure sensor.
Further, the device also comprises a machine body and a calibration device;
The first discharging end, the second feeding end, the radioactive source, the detection device and the calibration device are all positioned in the machine body;
The calibration device is used for calibrating the gas sample positioned by the calibration;
the positioning is positioned between the first discharge end and the second feed end and above the filter paper strip.
Further, the calibration device comprises a second driving mechanism and a standard diaphragm;
The second driving mechanism is connected with the standard diaphragm so as to enable the standard diaphragm to move or separate from the standard positioning.
The device further comprises a heating device, wherein the heating device is arranged on the sample feeding pipeline and is used for heating the inside of the sample feeding pipeline.
Further, the heating device comprises a heating block and a heat preservation sleeve;
The heating block is arranged on the sample inlet pipe, and the heat preservation sleeve is sleeved on the heating block.
According to the beta-ray dust automatic monitor capable of being measured in real time, provided by the invention, the radioactive source is arranged in the sample injection pipeline, the detection device is arranged in the detection pipeline, the radioactive source and the detection device are arranged oppositely, the filter paper tape is arranged between the radioactive source and the detection pipeline, paper feeding is not needed to be carried out back and forth during measurement, sample collection and sample measurement can be synchronously carried out, real-time continuous monitoring of particulate matters can be realized, and the structure is simplified.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an automatic monitor for beta-ray dust emission, which is capable of measuring in real time and provided by the embodiment of the invention.
Icon:
1-organism, 2-sample introduction pipeline, 3-detection pipeline, 4-sampling device, 5-radioactive source, 6-detection device, 7-paper feeding device, 8-paper filtering belt, 9-air pump, 10-paper feeding wheel, 11-paper feeding wheel, 12-first tension wheel, 13-encoder, 14-second tension wheel, 15-flowmeter, 16-regulating valve, 17-temperature sensor, 18-humidity sensor, 19-pressure sensor, 20-standard diaphragm and 21-heating device.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, the embodiment provides an automatic beta-ray dust monitor capable of measuring in real time, which comprises a machine body 1, a sample feeding pipeline 2, a detection pipeline 3, a sampling device 4, a radioactive source 5, a detection device 6, a paper feeding device 7 and other structures.
The body 1 of the embodiment is used as a mounting and protecting structure of the whole detector, the sample feeding pipeline 2 and the detecting pipeline 3 of the embodiment are partially located in the body 1, and the sampling device 4, the radioactive source 5, the detecting device 6 and the paper feeding device 7 of the embodiment are all located in the body 1.
Accordingly, a controller or a processor (not shown) may be disposed in the machine body 1 of the present embodiment, a control panel, a display screen, and other structures (not shown) may be mounted on the machine body 1, the controller is connected to each device and the control panel, the actions of each device are controlled by the control panel, and the detected dust data is displayed by the display screen. Of course, the above controller, control panel, display screen, and the like are all of the existing structures, and therefore the present embodiment does not make any description of the drawings and the principle thereof.
The sample feeding pipeline 2 of the present embodiment has a first feeding end (the upper end of the sample feeding pipeline 2 in the figure) and a first discharging end (the lower end in the figure), the first feeding end of the present embodiment is located outside the machine body 1, the first discharging end is located in the machine body 1, and the first feeding end is connected with the sampling device 4. The radioactive source 5 of this embodiment is located in the sample injection pipeline 2, and the sample injection pipeline 2 of the radioactive source 5 will not influence the flow of the sample gas.
The detection pipeline 3 of the embodiment is provided with a second feeding end (the upper end of the detection pipeline 3 in the figure) and a second discharging end, wherein the second feeding end is positioned in the machine body 1, the second discharging end is positioned in the machine body 1, and the first discharging end and the second feeding end of the embodiment are oppositely arranged and have smaller preset distance. The detection means 6 of the present embodiment are located in the second feed end, also without affecting the gas flow, and are arranged opposite to the radiation source 5 described above.
The paper feeding device 7 of this embodiment is provided with a filter paper belt 8 for detection, the filter paper belt 8 is located between the first discharging end and the second feeding end, and the filter paper belt 8 can move along a preset direction, namely, the horizontal direction in the figure, under the driving of the paper feeding device 7.
The air pump 9 is installed on the detection pipeline 3 of this embodiment, the air pump 9 can be connected with the above-mentioned controller, the sampling device 4 of this embodiment includes the cutterbar, the cutterbar cuts the separation with the particulate matter in the air, and carry the detection pipeline 3 with the target particulate matter through the sampling pipeline 2 in, the conveying power can be realized by the air pump 9, consequently, the distance between the first discharge end of this embodiment and the second feed end needs to be designed, guarantee that the suction of air pump 9 can also play certain effect to sampling pipeline 2, make the air current enter into detection pipeline 3 by sampling pipeline 2. Of course, it is possible to realize that the air flow can enter the detection pipeline 3 from the sample pipeline 2 by other structures, for example, a pump body and other structures are also mounted on the sample pipeline 2.
The radiation source 5 in this embodiment is 14 C source (carbon 14), the detection device 6 is a beta-ray counting type detector, the filter belt 8 is a glass fiber filter belt, the target particles in the sample gas are attached to the filter belt 8, the radiation source 5 emits rays, the rays are attenuated by the filter belt 8 and then converted into an electric signal by the detection device 6, and the electric signal is acquired and processed by the instrument host (including the controller) to obtain the concentration of the particles.
According to the structural design, the radioactive source 5 is arranged in the sample injection pipeline 2, the detection device 6 is arranged in the detection pipeline 3, the radioactive source 5 and the detection device 6 are arranged oppositely, the paper filtering belt 8 is arranged between the radioactive source 5 and the detection device, paper feeding back and forth is not needed during measurement, so that sample collection and sample measurement can be synchronously performed, real-time continuous monitoring of particulate matters can be realized, and the structure is simplified due to the fact that paper feeding back and forth is not needed.
As a preferred implementation manner of the embodiment, the paper feeding device 7 of the embodiment comprises a paper feeding wheel 10, a paper feeding wheel 11, a first driving mechanism (not shown in the figure) and a length detection mechanism, wherein the paper feeding wheel 10 of the embodiment is a damping wheel, the first driving mechanism of the embodiment is connected with the paper feeding wheel 11 and drives the paper feeding wheel 11 to rotate, the filter paper belt 8 of the embodiment is wound on the paper feeding wheel 11, one end of the filter paper belt 8 is connected with the paper feeding wheel 11, and the length detection mechanism of the embodiment is used for detecting the running length of the filter paper belt 8.
The above structural design is that the inventor finds that the existing paper feeding wheel 11 and the paper feeding wheel 10 are respectively provided with a driving motor for controlling, the design is complex, if the control is inaccurate, the paper breaking risk exists, so the embodiment innovates the control, the paper feeding wheel 11 is connected with driving components such as a gear motor, and the like, the paper feeding wheel 10 is designed as a damping wheel, and the paper filtering belt 8 passively rotates when pulled, and the running stability of the equipment is improved because only the paper feeding wheel 11 has a driving force, and the paper breaking risk caused by inconsistent rotation distance between the paper feeding wheel 11 and the paper feeding wheel 10 does not exist.
Specifically, the length detection mechanism of the embodiment comprises a first tensioning wheel 12 and an encoder 13, wherein the first tensioning wheel 12 of the embodiment is located above the paper feeding wheel 10 and is used for tensioning the filter paper belt 8 between the paper feeding wheel 10 and the paper feeding wheel 11, the encoder 13 of the embodiment is arranged on the first tensioning wheel 12, and the first tensioning wheel 12 drives the encoder 13 to rotate to detect the paper feeding distance. The paper feeding device 7 of this embodiment further includes a pressing mechanism (not shown in the figure), and after the paper is fed to a set distance, the paper feeding wheel 11 stops rotating, and the pressing mechanism moves down to press the paper filtering belt 8, so as to prevent the paper filtering belt 8 from sliding and the sample feeding channel from leaking.
Since the first tensioning wheel 12 is configured, in order to ensure that the filter paper belt 8 can be conveyed horizontally, the stress of the filter paper belt 8 is reduced and the direction between the filter paper belt 8 and the sample feeding pipeline 2 is not offset vertically, the paper feeding device 7 of the embodiment further comprises a second tensioning wheel 14, and the second tensioning wheel 14 of the embodiment is located above the paper feeding wheel 11 and is used for tensioning the filter paper belt 8 between the first tensioning wheel 12 and the paper feeding wheel 11.
As a preferred implementation manner of this embodiment, this embodiment further includes a flow meter 15 on the detection pipeline 3 to control the gas flow, and may further include a filter (not shown in the figure) and a regulating valve 16, where each of the flow meter 15, the filter and the regulating valve 16 may be connected to the above-mentioned controller, and the action of the flow meter 15, the regulating valve 16 may be controlled by a control panel, and the flow rate may be regulated according to feedback of the flow meter 15, and the filter may filter the detected gas flow.
As a preferred implementation manner of this embodiment, a sensor group may be further disposed in the detection pipeline 3, and the detection of the gas parameter may be performed by the sensor group, for example, the sensor group may include a temperature sensor 17, a humidity sensor 18, and a pressure sensor 19, so as to detect the temperature, humidity, and pressure of the gas. The opening and closing degree of the regulating valve 16 can be controlled according to the flow fed back by the flow meter 15 and the pressure obtained by the pressure sensor 19, so as to provide continuous and stable atmospheric sample flow at the inlet of the equipment. And whether the heating block is started or not can be controlled according to the temperature and humidity values measured by the humidity sensor 18 and the temperature sensor 17, so that the humidity in the sample gas is regulated, and the influence of the humidity on the measurement result is reduced.
In addition, before the automatic β -ray dust monitor of this embodiment is used, the "standard diaphragm 20" with a known mass (Δm) is used to calibrate the instrument, so as to obtain the k value (i.e. the mass absorption coefficient) of the correction coefficient of the instrument according to the β -ray attenuation relation. The beta-ray dust automatic monitor is repeatedly inserted by the standard membrane 20 during primary calibration, counts for a plurality of times, calculates the k value of the instrument, and keeps the k value in the instrument as an instrument constant to participate in the output operation of the instrument. Because the beta-ray dust emission automatic monitor is a metering instrument, calibration work is needed to be performed regularly so as to ensure the stability and accuracy of the k value.
However, the standard membrane 20 is generally external, i.e. is disposed outside the machine body 1, and needs to be operated repeatedly in a manual intervention manner, which is inconvenient.
Specifically, the calibration device of the present embodiment includes a second driving mechanism (not shown) and a standard diaphragm 20, and the second driving mechanism is connected to the standard diaphragm 20 to move the standard diaphragm 20 or separate from the standard position. The orientation of this embodiment is between the first discharge end and the second feed end and above the filter belt 8. And the second driving mechanism of the embodiment can be controlled by the control panel and the controller, and manual operation is not needed.
In addition, for the convenience of detection, a heating device 21 is further installed on the sample injection pipeline 2, the heating device 21 is used for heating the inside of the sample injection pipeline 2, when the humidity sensor 18 detects that the humidity reaches a certain value, the heating device 21 removes the humidity, the heating device 21 of the embodiment comprises a heating block and a heat preservation sleeve, the heating block is installed on the sample injection pipeline 2, and the heat preservation sleeve is sleeved on the heating block.
It should be noted that the above embodiments are merely for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that the technical solution described in the above embodiments may be modified or some or all of the technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the present invention.
Claims (8)
1. The beta-ray dust emission automatic monitor capable of measuring in real time is characterized by comprising a sample injection pipeline, a detection pipeline, a sampling device, a radioactive source, a detection device and a paper feeding device;
The sample injection pipeline is provided with a first feeding end and a first discharging end, and the detection pipeline is provided with a second feeding end and a second discharging end;
The first feeding end is connected with the sampling device, and the first discharging end and the second feeding end are oppositely arranged;
The radioactive source is positioned in the sample injection pipeline;
The detection device is positioned in the second feeding end and is arranged opposite to the radioactive source;
The paper feeding device is provided with a paper filtering belt, the paper filtering belt is positioned between the first discharging end and the second feeding end, and the paper filtering belt can move along a preset direction under the driving of the paper feeding device;
The paper feeding device comprises a paper feeding wheel, a first driving mechanism and a length detecting mechanism;
The paper feeding wheel is a damping wheel;
the first driving mechanism is connected with the paper feeding wheel and drives the paper feeding wheel to rotate;
the filter paper belt is wound on the paper feeding wheel, and one end of the filter paper belt is connected with the paper feeding wheel;
the length detection mechanism is used for detecting the walking length of the filter paper belt;
The detection pipeline is provided with an air pump and a flowmeter, and a sensor group is arranged in the detection pipeline.
2. The automatic monitor for real-time measurable β -ray dust emission of claim 1, wherein the length detection mechanism comprises a first tensioning wheel and an encoder;
the first tensioning wheel is positioned above the paper feeding wheel and is used for tensioning the filter paper belt between the paper feeding wheel and the paper feeding wheel;
The encoder is mounted on the first tensioner.
3. The real-time measurable automatic beta radiation dust monitor of claim 2, further comprising a second tensioning wheel;
The second tensioning wheel is located above the paper feeding wheel and is used for tensioning the filter paper belt between the first tensioning wheel and the paper feeding wheel.
4. The real-time measurable beta radiation dust automatic monitoring apparatus of claim 1, wherein said sensor group comprises at least one of a temperature sensor, a humidity sensor and a pressure sensor.
5. The automatic monitor for real-time measurement of beta-ray dust according to any one of claims 1 to 4, further comprising a body and a calibration device;
The first discharging end, the second feeding end, the radioactive source, the detection device and the calibration device are all positioned in the machine body;
The calibration device is used for calibrating the gas sample positioned by the calibration;
the positioning is positioned between the first discharge end and the second feed end and above the filter paper strip.
6. The automatic monitor for real-time measured beta-ray dust emission of claim 5, wherein the calibration device comprises a second driving mechanism and a standard diaphragm;
The second driving mechanism is connected with the standard diaphragm so as to enable the standard diaphragm to move or separate from the standard positioning.
7. The automatic monitor for beta-ray dust emission, which can be measured in real time according to any one of claims 1 to 4, further comprises a heating device, wherein the heating device is arranged on the sample inlet pipeline and heats the interior of the sample inlet pipeline.
8. The automatic monitor for real-time measurement of beta-ray dust emission of claim 7, wherein the heating device comprises a heating block and a thermal insulation sleeve;
The heating block is arranged on the sample inlet pipe, and the heat preservation sleeve is sleeved on the heating block.
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| CN100526854C (en) * | 2007-07-03 | 2009-08-12 | 武汉市天虹仪表有限责任公司 | Beta-ray soot concentration direct-reading monitor and method for determining effective sample |
| CN110231260A (en) * | 2018-12-17 | 2019-09-13 | 天津同阳科技发展有限公司 | High time resolution realtime monitor device for granular articles and method based on β ray method |
| CN111077049A (en) * | 2019-12-27 | 2020-04-28 | 安徽安光环境科技有限公司 | Portable β ray method particulate matter concentration monitoring system |
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