CN217717407U - Aerosol sample control system and biological alarm detection system - Google Patents
Aerosol sample control system and biological alarm detection system Download PDFInfo
- Publication number
- CN217717407U CN217717407U CN202220261826.3U CN202220261826U CN217717407U CN 217717407 U CN217717407 U CN 217717407U CN 202220261826 U CN202220261826 U CN 202220261826U CN 217717407 U CN217717407 U CN 217717407U
- Authority
- CN
- China
- Prior art keywords
- flow
- aerosol
- controller
- sample
- control circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to an aerosol sample control system and biological alarm detecting system, including air supply, sample flow and concentration control circuit, air supply flow control circuit, hybrid chamber, monitor controller, aerosol monitor. The sample flow concentration control circuit and the gas source flow control circuit are connected in parallel and are respectively connected between the gas source and the mixing cavity. The sample flow and concentration control circuit comprises a flow sensor A, a flow controller A and an atomizing head which are connected in sequence through a pipeline, and the atomizing head is connected with a sample atomizing bottle; the gas source flow control circuit comprises a flow sensor B and a flow controller B which are connected in sequence through a pipeline. The utility model discloses can prepare out highly stable biological particle and monodisperse particle aerosol, in addition, can also utilize the highly stable biological particle and the monodisperse particle aerosol of preparation to check particle counter and biological alarm, detect its accuracy.
Description
Technical Field
The utility model belongs to the emergence, the control and the equipment detection of biological particle and monodisperse particle aerosol, specific theory relates to an aerosol sample control system and biological alarm detecting system.
Background
The dust particle counter is widely applied to cleanliness detection of a clean room and performance detection of a purification table, an air filter and a filter material, has a corresponding performance test method GB-T6167-2007 Performance test method of dust particle counters and a calibration specification JJF 1190-2008 calibration Specification of dust particle counters, and provides a basis for manufacturing, acceptance and calibration of the dust particle counter.
The biological monitor and the biological alarm are used for monitoring and alarming biological particles in the air environment, have obvious demand in recent years, are rapid in technology and product development, and are widely applied to aspects of battlefield and homeland defense, indoor and outdoor biological particle monitoring, airborne hospital infection control, biological pharmacy and the like in the future. Is supported by the great force of multiple departments, and has numerous capital, research institutions and physical enterprises intervened therein.
In order to improve the living environment of human beings and obtain better air quality, the harmful components in the air need to be effectively monitored, controlled and prevented, and various airborne organisms and non-biological particles need to be deeply researched, so that the relevant characteristics of the airborne organisms and the non-biological particles are known and solved, and the beautiful living environment is created for human beings.
However, at present, there are relatively high test conditions, technical thresholds and personnel skill requirements for testing and calibrating particle counters, testing and verifying biological monitors and biological alarms, and testing and researching aerosol samples, and many influencing factors exist in the test process, which leads to the increase of uncertainty of test results.
The method has the advantages that the method can be used for generating the state-controllable and high-stability biological particle and monodisperse particle aerosol, monitoring the concentration, the particle size distribution, the single particle optical characteristics (fluorescence and scattered light of detected particles) and the statistical characteristics of the aerosol sample in real time, realizing the intellectualization, the process and the visualization of the test process, ensuring the control of the test process, automatically recording test data and calculating the test result, reducing the requirements on testers, improving the effectiveness of the test result, providing the generation, the monitoring and the control of the aerosol for detection institutions, scientific research institutions, universities and equipment manufacturers, and facilitating the development of related tests and researches, and has important significance.
Disclosure of Invention
In order to overcome the problem that exists among the background art, the utility model provides an aerosol sample control system and biological alarm detecting system can prepare out high stable biological particle and monodisperse particle aerosol, and in addition, can also utilize the high stable biological particle and the monodisperse particle aerosol of preparation to check particle counter and biological alarm, detect its accuracy.
Therefore, the utility model discloses a first aim at provides an aerosol sample control system, and second aim at provides the standard sample that utilizes this aerosol sample control system to prepare and monitors particle counter and biological alarm's accuracy.
The aerosol sample control system comprises an air source, a sample flow and concentration control circuit, an air source flow control circuit and a mixing cavity; the sample flow concentration control circuit and the gas source flow control circuit are connected in parallel and are respectively connected between the gas source and the mixing cavity.
Preferably, the sample flow and concentration control circuit comprises a flow sensor A, a flow controller A and an atomizing head which are sequentially connected through a pipeline, and the atomizing head is connected with a sample atomizing bottle; the gas source flow control circuit comprises a flow sensor B and a flow controller B which are sequentially connected through a pipeline.
Preferably, the aerosol sample control system further comprises a monitoring controller and an aerosol monitor; the mixing cavity is provided with a differential pressure sensor; and the monitoring controller is respectively connected with the flow sensor A, the flow controller A, the flow sensor B, the flow controller B, the differential pressure sensor and the aerosol monitor.
Preferably, the system also comprises a sampling distributor, an aerosol monitor and a device to be detected; the sampling distributor is connected with the mixing cavity; the detected equipment is connected with the aerosol monitor in parallel and is respectively connected with the sampling distributor.
The aerosol sample control system and the biological alarm detection system comprise an aerosol sample control system, a sampling distributor and detected equipment; the sampling distributor is connected with the mixing cavity; the detected equipment is connected with the sampling distributor and is connected with the aerosol monitor in parallel.
Preferably, an on-off controller A is connected between the sampling distributor and the mixing cavity; the on-off controller A is connected with the monitoring controller.
Preferably, the operating system comprises a computer; the computer is connected with the monitoring controller; the computer has operation, display and printing functions.
Preferably, the system also comprises a computer; the computer is respectively in communication connection with the monitoring controller, the aerosol monitor, the detected equipment and the air source; the computer has operation, display and printing functions.
Preferably, the device also comprises an on-off controller B; the on-off controller B is connected between the air source and the sampling distributor; and the on-off controller B is also connected with the monitoring controller.
Preferably, the device further comprises an exhaust gas processor, wherein the exhaust gas processor is communicated with the mixing cavity through a pipeline, and an exhaust control valve A is arranged on the connecting pipeline.
Preferably, the sampling distributor is provided with an exhaust pipe; an exhaust control valve B is arranged on the exhaust pipe; and the exhaust control valve B is in communication connection with a computer.
Preferably, the device under test is a particle counter or a biological alarm.
The utility model has the advantages that:
the utility model discloses can prepare out highly stable biological particle and monodisperse particle aerosol, in addition, can also utilize the biological particle and the monodisperse particle aerosol that prepare out highly stable to check particle counter and biological alarm, detect its accuracy. The operation control difficulty of the test and the verification of the particle counter, the biological monitor and the biological alarm at present is reduced, so that the technical threshold and the personnel skill requirement are reduced, and the stability of the monitoring result is effectively improved.
Drawings
FIG. 1 is a schematic view of the present invention (one-way system);
fig. 2 is a schematic structural diagram (multi-path system) of the present invention;
the arrow direction is the data or signal trend;
in the figure, 1-air source, 2-mixing cavity, 3-flow sensor A, 4-flow controller A, 5-atomizing head, 6-sample atomizing bottle, 7-flow sensor B, 8-flow controller B, 9-monitoring controller, 10-aerosol monitor, 11-differential pressure sensor, 12-sampling distributor, 13-tested equipment, 14-on-off controller A, 15-computer, 16-exhaust control valve B, 17-on-off controller B, 18-exhaust gas processor and 19-exhaust control valve A.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following will make a detailed description of a preferred embodiment of the present invention with reference to the accompanying drawings to facilitate understanding of the skilled person.
EXAMPLE 1 Aerosol sample control System
Referring to fig. 1, the aerosol sample control system includes an air source 1, a sample flow and concentration control circuit, an air source flow control circuit, a mixing chamber 2, a monitoring controller 9, and an aerosol monitor 10.
The sample flow concentration control circuit and the gas source flow control circuit are connected in parallel and are respectively connected between the gas source 1 and the mixing cavity 2. The sample flow and concentration control circuit comprises a flow sensor A3, a flow controller A4 and an atomizing head 5 which are connected in sequence through a pipeline, and the atomizing head 5 is connected with a sample atomizing bottle 6; the air source flow control circuit comprises a flow sensor B7 and a flow controller B8 which are connected in sequence through a pipeline. The sample flow concentration control circuit can pre-dilute the standard sample, and the diluted standard sample enters the mixing chamber 2 together with the air source conveyed by the air source flow control circuit.
The standard sample is an aerosol specimen prepared in advance, the standard aerosol sample is directly used for generating so as to obtain the expected concentration, the aerosol meeting the test requirements is met, the requirements on personnel skills, instruments and equipment, the preparation environment and the like during the preparation of the aerosol sample are reduced, and the test effectiveness is improved. The spray head 5 needs to select a corresponding model according to the particle size of the sample aerosol, and the spray head 5 of the corresponding model is selected according to parameters such as generation flow, generation particle size distribution and atomization amount.
The aerosol monitor 10 is used to monitor the particle size and concentration of airborne particles, as well as the concentration of biological particles, and to measure single particle optical characteristics (detect the fluorescence and scattered light amplitudes of the particles and their waveforms). For non-biological aerosol test items, the aerosol monitor 10 is used only to monitor the particle size distribution and concentration of non-biological particles. For the bioaerosol test project, the aerosol monitor 10 can be used for monitoring the particle size distribution and concentration of the particles, and can also effectively carry out various tests and researches by measuring other optical characteristics of the particles (detecting the fluorescence and scattered light amplitudes and waveforms of the particles).
The monitoring controller 9 is respectively connected with the flow sensor A3, the flow controller A4, the flow sensor B7, the flow controller B8 and the aerosol monitor 10, and adjusts each flow index according to the monitoring result of the aerosol monitor 10, so that the samples in the mixing cavity 2 and the sampling distributor 12 are kept stable. The design parameter indexes of the mixing cavity 2 comprise cavity volume, carrier gas flow, self-purification time, mixed gas temperature and humidity and the like, and the aerosol generating concentration can be accurately controlled by detecting temperature, humidity difference and concentration and controlling the carrier gas flow. The differential pressure can be controlled by the exhaust control valve a 19.
Preferably, the aerosol sample control system further comprises a computer 15, and the computer 15 is in communication connection with the monitoring controller 9, the aerosol monitor 10, the detected equipment 13 and the gas source 1 respectively. The computer 15 is provided with operation, display and printing functions. The monitoring controller 9 compares the detection result with the computer 15 based on the data set by the computer 15 to control each parameter.
Preferably, the aerosol sample control system further comprises a waste gas processor 18, the waste gas processor 18 is communicated with the mixing cavity 2 through a pipeline, an exhaust control valve A19 is arranged on the connecting pipeline, and the waste gas processing system is used for processing toxic and harmful aerosols and is mainly applied to sample discharge processing under the conditions of replacement of the previous aerosol sample and the like when a new aerosol sample is prepared.
As a preferred technical scheme, an on-off controller A14 is connected between the sampling distributor 12 and the mixing cavity 2; the on-off controller a14 is also connected with the monitor controller 9. By arranging the on-off controller A14, when a multi-path aerosol sample is prepared, the on-off controller A14 can switch the air inlet of a generation channel to obtain a corresponding aerosol development test.
Example 2 (Aerosol sample control System and particle counter or biological alarm detection System for one-way System)
As shown in fig. 1, the particle counter or the biological alarm detection system according to the present embodiment is added with the detection function of the device to be detected (particle counter or biological alarm) in addition to embodiment 1.
The method specifically comprises the following steps: the sampling distributor 12, the aerosol monitor 10, the device under test 13 and the on-off controller B17 are added on the basis of the embodiment 1. The sampling distributor 12 is connected with the mixing chamber 2, and the device to be tested 13 is connected with the aerosol monitor 10 in parallel and is respectively connected with the sampling distributor 12. The device 13 to be tested is a particle counter or a biological alarm. The accuracy of the detection result of the device 13 to be detected can be detected by connecting the device 13 to be detected and the aerosol monitor 10 in parallel, for example, the aerosol monitor 10 monitors that a certain index in aerosol exceeds the alarm value of the device 13 to be detected, and then, whether the alarm exists in the device 13 to be detected is checked, if the alarm exists in the device 13 to be detected, the device 13 to be detected is qualified, and if the alarm does not exist in the device 13 to be detected, the device 13 to be detected is unqualified or has a fault.
The on-off controller B17 is connected between the gas source 1 and the sampling distributor 12; the on-off controller B17 is also connected with the monitoring controller 9. When the aerosol sample is replaced, the system needs to be self-cleaned, and the on-off controller B17 has the function of switching the system detection and self-cleaning: the on-off controller B17 is used for detection when turned off, and the on-off controller B17 is used for self-cleaning when turned on.
The sampling distributor 12 is provided with an exhaust pipe; an exhaust control valve B16 is arranged on the exhaust pipe; the exhaust control valve B16 is connected in communication with the computer 15. The opening of the exhaust control valve B16 may maintain the balance of the entire aerosol-generating system. The control valve B16 is vented to replace and self-clean the sample in the sample dispenser 12 when the next aerosol sample is prepared.
Example table of aerosol sample detectable by the embodiment
| Product numbering | Main index of aerosol |
| 5000/28.3-0030 | Monodisperse particles with the particle diameter of 0.3um and the generation concentration (4500-5500) per 28.3L |
| 5000/28.3-0040 | Monodisperse particles with the particle diameter of 0.4um and the generation concentration (4500-5500) per 28.3L |
| 5000/28.3-0050 | Monodisperse particles with the particle diameter of 0.5um and the generation concentration (4500-5500) per 28.3L |
| 5000/28.3-0060 | Monodisperse particles with the particle diameter of 0.6um and the generation concentration (4500-5500) per 28.3L |
| 5000/28.3-0100 | Monodisperse particles with the particle diameter of 1.0um and the generation concentration (4500-5500) per 28.3L |
| 5000/28.3-0300 | Monodisperse particles with the particle diameter of 3.0um and the generation concentration (4500-5500) per 28.3L |
| 5000/28.3-0500 | Monodisperse particles with the particle diameter of 5.0um and the generation concentration (4500-5500) per 28.3L |
| 5000/28.3-1000 | Monodisperse particles with the particle diameter of 10um and the generation concentration (4500-5500) per 28.3L |
| 50000/28.3-0030 | Monodisperse particles with the particle size of 0.3um and the generation concentration (45000-55000) per 28.3L |
| 50000/28.3-0040 | Monodisperse particles with the particle diameter of 0.4um and the generation concentration (45000-55000) per 28.3L |
| 50000/28.3-0050 | Monodisperse particles with the particle size of 0.5um and the generation concentration (45000-55000) per 28.3L |
| 50000/28.3-0060 | Monodisperse particles with the particle diameter of 0.6um and the generation concentration (45000-55000) per 28.3L |
| 50000/28.3-0100 | Monodisperse particles with the particle diameter of 1.0um and the generation concentration (45000-55000) per 28.3L |
| 50000/28.3-0300 | Monodisperse particles with the particle size of 3.0um and the generation concentration (45000-55000) per 28.3L |
| 50000/28.3-0500 | Monodisperse particles with the particle size of 5.0um and the generation concentration (45000-55000) per 28.3L |
| 50000/28.3-1000 | Monodisperse particles with the particle diameter of 10um and the generation concentration (45000-55000) per 28.3L |
| 5000000/1-0030 | Monodisperse particles with the particle diameter of 0.3um and the generation concentration (4500000-5500000) per L |
| 75/1-KC | Biological particles, strains (bacillus subtilis), with the generation concentration of 50-100/L |
| 150/1-KC | Biological particles, strains (bacillus subtilis) with the generation concentration of 100-200/L |
| 300/1-KC | Biological particles, strains (bacillus subtilis), with the generation concentration of 200-300 per L |
| 750/1-KC | Biological particles, strains (bacillus subtilis), with the generation concentration (500-1000) per L |
| 75/1-BP | Biological particles, strains (white staphylococcus), with a concentration of 50-100/L |
| 150/1-BP | Biological particles, strains (white staphylococcus), with a concentration of 100-200/L |
| 300/1-BP | Biological particles, strains (white staphylococcus), the generation concentration (200-300) per L |
| 750/1-BP | Biological particleSeed, strain (white staphylococcus), the generation concentration (500-1000) per L |
Example 3 (Multiplexed Aerosol sample control System and particle counter or biological alarm detection System)
As shown in fig. 2, in this embodiment, on the basis of embodiment 2, a plurality of generating channels (aerosol sample control systems) are added, generally 2 to 8 channels, the air channels of the plurality of generating channels are switched by an on-off controller a14 disposed between the sampling distributor 12 and the mixing chamber 2, and the on-off controller a14 can switch the air intake of the generating channels to obtain aerosol development tests of different channels. A sampling distributor 12 is used by a multi-path aerosol sample control system, and different paths are switched according to the detection requirement of the detected equipment.
Each channel 1 contains the gas source 1, sample flow and concentration control lines, gas source flow control lines, mixing chamber 2, differential pressure sensor 11, exhaust control valve a19, exhaust gas processor 18 as described in example 1.
Finally, the above preferred embodiments are only intended to illustrate the technical solution of the present invention and not to limit it, and although the present invention has been described in detail by the above preferred embodiments, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the present invention as defined by the appended claims.
Claims (10)
1. An aerosol sample control system, characterized by: comprises an air source (1), a sample flow and concentration control circuit, an air source flow control circuit and a mixing chamber (2); the sample flow and concentration control circuit and the gas source flow control circuit are connected in parallel and are respectively connected between the gas source (1) and the mixing cavity (2).
2. An aerosol sample control system according to claim 1, wherein: the sample flow and concentration control circuit comprises a flow sensor A (3), a flow controller A (4) and an atomizing head (5) which are sequentially connected through a pipeline, and the atomizing head (5) is connected with a sample atomizing bottle (6); the air source flow control line comprises a flow sensor B (7) and a flow controller B (8) which are connected in sequence through a pipeline.
3. An aerosol sample control system according to claim 2, wherein: the aerosol sample control system also comprises a monitoring controller (9) and an aerosol monitor (10); the mixing cavity (2) is provided with a differential pressure sensor (11); and the monitoring controller (9) is respectively connected with the flow sensor A (3), the flow controller A (4), the flow sensor B (7), the flow controller B (8), the differential pressure sensor (11) and the aerosol monitor (10).
4. An aerosol sample control system according to claim 3, wherein: further comprising a sampling distributor (12); the sampling distributor (12) is connected with the mixing chamber (2).
5. An aerosol sample control system according to claim 3, wherein: further comprising an operating system comprising a computer (15); the computer (15) is connected with the monitoring controller (9); the computer (15) has operating, display and printing functions.
6. A biological alarm detection system is characterized in that: an aerosol sample control system comprising the system of claim 3, further comprising a sampling dispenser (12), an aerosol monitor (10), a device under test (13); the sampling distributor (12) is connected with the mixing cavity (2); the device to be detected (13) is connected with the aerosol monitor (10) in parallel and is respectively connected with the sampling distributor (12).
7. The bioalarm detection system of claim 6, wherein: further comprising a computer (15); the computer (15) is respectively in communication connection with the monitoring controller (9), the aerosol monitor (10), the detected equipment (13) and the air source (1); the computer (15) has operation, display and printing functions; an exhaust pipe is arranged on the sampling distributor (12); an exhaust control valve B (16) is arranged on the exhaust pipe; the exhaust control valve B (16) is in communication connection with a computer.
8. The bioalarm detection system of claim 6, wherein: an on-off controller A (14) is connected between the sampling distributor (12) and the mixing cavity (2); the on-off controller A (14) is connected with the monitoring controller (9).
9. The bioalarm detection system of claim 6, wherein: the device also comprises an on-off controller B (17); the on-off controller B (17) is connected between the air source (1) and the sampling distributor (12); the on-off controller B (17) is also connected with the monitoring controller (9).
10. The bioalarm detection system of claim 6, wherein: the waste gas treatment device is characterized by further comprising a waste gas processor (18), wherein the waste gas processor (18) is communicated with the mixing cavity (2) through a pipeline, and a gas exhaust control valve A (19) is arranged on the connecting pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220261826.3U CN217717407U (en) | 2022-02-09 | 2022-02-09 | Aerosol sample control system and biological alarm detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220261826.3U CN217717407U (en) | 2022-02-09 | 2022-02-09 | Aerosol sample control system and biological alarm detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217717407U true CN217717407U (en) | 2022-11-01 |
Family
ID=83788959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220261826.3U Active CN217717407U (en) | 2022-02-09 | 2022-02-09 | Aerosol sample control system and biological alarm detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217717407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116272455A (en) * | 2023-05-24 | 2023-06-23 | 北京市农林科学院信息技术研究中心 | Bioaerosol generating system |
-
2022
- 2022-02-09 CN CN202220261826.3U patent/CN217717407U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116272455A (en) * | 2023-05-24 | 2023-06-23 | 北京市农林科学院信息技术研究中心 | Bioaerosol generating system |
| CN116272455B (en) * | 2023-05-24 | 2023-08-04 | 北京市农林科学院信息技术研究中心 | Bioaerosol generating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2220629B1 (en) | System and method for calibration verification of an optical particle counter | |
| KR101721190B1 (en) | Microorganism Filter Test System | |
| CN217717407U (en) | Aerosol sample control system and biological alarm detection system | |
| CN112608827A (en) | Air microorganism sampler sampling physical efficiency calibration bin, calibration system and method | |
| CN106769724B (en) | Particulate matter sensor calibration system | |
| KR20080057324A (en) | Inhalant exposure system | |
| CN109357928B (en) | Device and method for calibrating dilution ratio of aerosol diluter | |
| CN115093943A (en) | Biological aerosol enrichment device by centrifugal impact method and cell exposure and application thereof | |
| CN108051338A (en) | A kind of resistance testing and analysis system of air filter | |
| CN204944906U (en) | A kind of gas discharging particle sampling device | |
| CN207503074U (en) | The intelligence control system in precision intelligence laboratory | |
| CN214309773U (en) | Hierarchical sampling device of cavy expiratory aerosol | |
| KR20220061310A (en) | Evaluation system and method for performance of removing bioairosol | |
| CN1029871C (en) | Detector for ZrO2 measuring oxygen sensor | |
| CN108415472A (en) | The hair mist concentration adjusting device of aerosol source | |
| CN106404625B (en) | Light scattering particulate matter (PM 2.5/PM 10) monitor | |
| CN208077018U (en) | The hair mist concentration adjusting device of aerosol source | |
| Geng et al. | Verification of real-time microbial monitoring technology based on the principle of laser-induced fluorescence under USP< 1223> standard and prospective application in our hospital PIVAS clean room | |
| CN217431740U (en) | Work station | |
| CN205506642U (en) | Performance detection device of real -time airborne viable particles calculating instrument | |
| Schumann et al. | Experimental investigation of the spread of airborne CFU in a research-OR under different air flow regimes using tracer particles | |
| CN202443008U (en) | Article cleanliness detector | |
| Clark et al. | A comparison of methods to measure operator protection factors in open‐fronted microbiological safety cabinets | |
| Smallwood et al. | A Research-Grade N95 Respirator Particle Filtration Efficiency Measurement Procedure | |
| CN219758195U (en) | Gas detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |