CN-224216512-U - Aerosol mass concentration calibrating device

CN224216512UCN 224216512 UCN224216512 UCN 224216512UCN-224216512-U

Abstract

The utility model provides an aerosol mass concentration calibration device which comprises a standard aerosol generating device, a first sampling pipeline, a second sampling pipeline, an aerosol capturing and weighing device, a first flow controller, a second flow controller and a negative pressure device, wherein inlets of the first sampling pipeline and the second sampling pipeline are respectively connected with sampling ports of the standard aerosol generating device and used for acquiring aerosols with the same source, a station to be tested is arranged on the first sampling pipeline and used for installing an aerosol measuring device, the aerosol capturing and weighing device is connected onto the second sampling pipeline and used for being used as a calibration standard, the first flow controller and the second flow controller are respectively arranged on the first sampling pipeline and the second sampling pipeline and used for adjusting flow, and outlets of the first sampling pipeline and the second sampling pipeline are both connected to the negative pressure device and used for forming the same pipeline negative pressure. The device may be used for calibration of aerosol measurement devices.

Inventors

SHI ZHANDONG
WU TINGTING
LI DONG
HE CHEN
CHEN CHEN
NIU JIAJIA
YANG GUOTAO
YE CHANGWEN
TIAN CONGCONG
MIAO QIAN
YANG RONGCHAO
ZENG BO
NING YINGHAO
YU QIANYUAN
ZHANG PENGFEI
ZHANG QING

Assignees

中国烟草总公司郑州烟草研究院

Dates

Publication Date: 20260508
Application Date: 20250520

Claims (10)

1. The aerosol mass concentration calibration device is characterized by comprising a standard aerosol generating device, a first sampling pipeline, a second sampling pipeline, an aerosol capturing and weighing device, a first flow controller, a second flow controller and a negative pressure device; The inlets of the first sampling pipeline and the second sampling pipeline are respectively connected with the sampling ports of the standard aerosol generating device and are used for acquiring aerosols with the same source; The first sampling pipeline is provided with a station to be tested and is used for installing an aerosol measuring device; The aerosol trapping and weighing device is connected to the second sampling pipeline and is used as a calibration standard; The first flow controller and the second flow controller are respectively arranged on the first sampling pipeline and the second sampling pipeline and used for adjusting the flow; Outlets of the first sampling pipeline and the second sampling pipeline are connected to a negative pressure device and are used for forming the same pipeline negative pressure.
2. The aerosol mass concentration calibration apparatus of claim 1, wherein the two ends of the aerosol trapping and weighing device are respectively connected with the second sampling pipeline through valves for disconnected weighing of the aerosol trapping and weighing device.
3. The aerosol mass concentration calibration apparatus of claim 1 or 2, wherein the first sampling line and the second sampling line are each connected to a different sampling port of a standard aerosol generating device.
4. The aerosol mass concentration calibration apparatus of claim 1 or 2, wherein the first sampling line and the second sampling line are connected to the same sampling port of a standard aerosol generating device by a three-way line.
5. The aerosol mass concentration calibration apparatus of claim 1, wherein the first flow controller and the second flow controller are identical in specification.
6. The aerosol mass concentration calibration apparatus of claim 1, wherein the aerosol trapping and weighing device is an aerosol trapping device with a weighing function.
7. The aerosol mass concentration calibration apparatus of claim 1, wherein the station to be measured is provided with a connecting valve for connecting with an aerosol measuring device.
8. The aerosol mass concentration calibration apparatus of claim 1 or 7, wherein the aerosol measurement apparatus is an aerosol-calibrated measurement apparatus.
9. The aerosol mass concentration calibration apparatus of claim 1, wherein the aerosol trapping device is a nanoscale aerosol trapping device.
10. The aerosol mass concentration calibration apparatus of claim 1, wherein the first and second sampling lines are provided with first and second flow control valves, respectively.

Description

Aerosol mass concentration calibrating device Technical Field The utility model relates to the technical field of aerosol detection, in particular to an aerosol mass concentration calibration device. Background The assessment and analysis of tobacco products becomes particularly important, and the measurement of smoke quantity is one of the key links. The smoke quantity is an index capable of intuitively reflecting the release quantity of smoke of the heated cigarettes from mouth to mouth, and is mainly characterized by adopting particle number concentration and mass concentration. Because dynamic phenomena such as evaporation, condensation and the like can occur after the aerosol of the cigarette smoke is generated, the particle number concentration can continuously and dynamically change in the process, and the mass concentration is kept relatively constant, the real situation of the mouth-by-mouth smoke amount can be more directly and effectively reflected by adopting the mass concentration. Therefore, a requirement is put on the accuracy of the measuring device for detecting the mass concentration, calibration is required for the mass concentration detection accuracy of the measuring device, and a relatively convenient and accurate device is not available at present. In order to solve the above problems, an ideal technical solution is always sought. Disclosure of utility model The object of the present utility model is to address the deficiencies of the prior art and thereby provide an aerosol mass concentration calibration device for calibrating an aerosol measurement device. In order to achieve the aim, the technical scheme adopted by the utility model is that the aerosol mass concentration calibration device comprises a standard aerosol generating device, a first sampling pipeline, a second sampling pipeline, an aerosol capturing and weighing device, a first flow controller, a second flow controller and a negative pressure device; The inlets of the first sampling pipeline and the second sampling pipeline are respectively connected with the sampling ports of the standard aerosol generating device and are used for acquiring aerosols with the same source; The first sampling pipeline is provided with a station to be tested and is used for installing an aerosol measuring device; The aerosol trapping and weighing device is connected to the second sampling pipeline and is used as a calibration standard; The first flow controller and the second flow controller are respectively arranged on the first sampling pipeline and the second sampling pipeline and used for adjusting the flow; Outlets of the first sampling pipeline and the second sampling pipeline are connected to a negative pressure device and are used for forming the same pipeline negative pressure. And on the basis of the above, two ends of the aerosol trapping and weighing device are respectively communicated with the second sampling pipeline through valves so as to be used for disconnecting and weighing the aerosol trapping and weighing device. Based on the above, the first sampling pipeline and the second sampling pipeline are respectively connected to different sampling ports of the standard aerosol generating device. Based on the above, the first sampling pipeline and the second sampling pipeline are connected to the same sampling port of the standard aerosol generating device through the three-way pipeline. The first flow controller and the second flow controller are identical in specification. The aerosol trapping and weighing device is an aerosol trapping device with a weighing function. And the station to be measured is provided with a connecting valve for connecting with the aerosol measuring device. The aerosol measurement device is a measurement device with aerosol calibration. The aerosol trapping and weighing device is a nanoscale aerosol trapping and weighing device. And the first flow regulating valve and the second flow regulating valve are respectively arranged on the first sampling pipeline and the second sampling pipeline. Compared with the prior art, the utility model has substantial characteristics and progress, and in particular has the following advantages: And aerosol generated by the same standard aerosol generating device is respectively introduced into two sampling pipelines, one is a calibration pipeline, the other is a reference pipeline, an aerosol trapping device is arranged in the reference pipeline, the calibration pipeline is used for installing an aerosol measuring device to be measured, the two pipelines are matched with a negative pressure device through a flow controller to realize the same flow environment, the aerosol measuring device to be measured synchronously traps the aerosol while executing a measuring task, and finally, whether the accuracy of the aerosol measuring device to be measured meets the standard is judged through quality comparison. Drawings Fig. 1 is a schematic structural view of an aerosol m