Remote control aerosol sampling system in severe environment

Abstract

The invention discloses a remote control aerosol sampling system in a severe environment, the remote control aerosol sampling system comprises a shell, an aerosol sampling mechanism is fixedly installed in the shell, the aerosol sampling mechanism comprises a box body, an air pump is started, an electromagnetic valve corresponding to a sampler of a first channel is opened, and other electromagnetic valves are closed; starting to collect the aerosol particles at the target time and the target position; after the sampling amount or operation time of the sampler of the first channel reaches a preset standard, the electromagnetic valve corresponding to the sampler of the first channel is closed, the electromagnetic valve corresponding to the sampler of the second channel is opened, and so on, the purpose of collecting aerosol samples changing along with time is achieved; the aerosol sample collected by the sampler is chemically analyzed, and the change condition of the aerosol in the experiment process is comprehensively obtained by combining the field change in the experiment process and the data of the particulate matter sensor, so that the sampling data is more accurate.

Description

Technical Field

[0001] The invention relates to an environmental monitoring technology, in particular to a remote control aerosol sampling system in a harsh environment. Background Art

[0002] In order to sample and analyze aerosol concentration changes, particle size distribution, and component composition at specific times and in specific areas under harsh environments, it is necessary to add and upgrade additional functions based on existing aerosol samplers on the market, so as to meet the sampling requirements of preventing external impacts in specific environments, collecting aerosols in synchronization with the progress of tests while avoiding impacts, and real-time monitoring and feedback of aerosol status.

[0003] TSP sampler and graded sampler are the more popular finished product samplers, which are used for total dust and 0.1-10um particle size graded collection and detection respectively. They have relatively mature timed start and stop functions and data time recording functions, which can meet the aerosol sampling needs in most common environments.

[0004] However, in certain specific research directions, it is necessary to simulate and monitor specific harsh environments, such as mines, blasting, fire laboratories, natural disaster simulations, weapons and equipment tests, etc. There are several common characteristics in such environments: strong external impact, extremely fast aerosol changes, and uneven aerosol states. Under the above complex conditions, ordinary aerosol samplers sold on the market have problems such as easy damage, single sampling function, and inaccurate sampling data, which seriously affect the rigor and reliability of the test. In order to solve the above problems, a remote control aerosol sampling system for harsh environments is proposed. Summary of the invention

[0005] The object of the present invention is to provide a remote control aerosol sampling system for harsh environments to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions: A remote-controlled aerosol sampling system for harsh environments comprises a shell, in which an aerosol sampling mechanism is fixedly installed, the aerosol sampling mechanism comprises a box body, in which a controller, a flow meter, an air pump, a particle sensor and a sampler are fixedly installed by bolts, and a solenoid valve corresponding to the sampler is also fixedly installed in the box body, an air inlet is arranged on the top of the box body, a sampling pipeline is plugged into the outer end of the air inlet, the sampling pipeline runs through the side wall of the shell, the air inlet is commonly connected to the air inlet end of a first graded sampler and a second graded sampler, the air outlet end of the sampler is connected to the corresponding solenoid valve, the input end of the air pump is connected to the common solenoid valve, the output end of the air pump is connected to the input end of the flow meter, and the output end of the flow meter is connected to the air outlet of the box body.

[0007] As a further solution of the present invention: the display end of the display penetrates the side wall of the box.

[0008] As a further solution of the present invention: the shell is provided with a shell cover, and the shell cover is provided with an observation window, and the observation window is located at the display.

[0009] As a further solution of the present invention: the inner wall of the shell is fixedly connected to the motor, the outer wall of the shell is fixedly connected to the bearing with a seat at the motor, a rotating shaft is arranged through the bearing with a seat, the rotating shaft is fixedly connected to the rotating end of the inner wall of the bearing with a seat, one end of the rotating shaft passes through the side wall of the shell and is fixedly connected to the output end of the motor, the outer end of the rotating shaft is fixedly connected to a connecting seat, a rotating arm is fixedly connected to the connecting seat by bolts, a sampling pipeline is arranged on the outer wall of the rotating arm, a plurality of fixing cards are provided on the sampling pipeline of the rotating arm, and the fixing cards are fixedly connected to the rotating arm by screws.

[0010] As a further solution of the present invention: the sampling pipeline is a corrugated tube lined with polytetrafluoroethylene.

[0011] As a further solution of the present invention: the box also includes a timing controller and a communication module, and the controller is electrically connected to the timing controller, the communication module, the motor, the flow meter, the air pump, the particle sensor, the solenoid valve and the display.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The air pump of the present invention is started, the solenoid valve corresponding to the sampler of the first channel is opened, and the other solenoid valves are closed, and the aerosol particles at the target time and the target position are collected; after the sampling amount or the running time of the sampler of the first channel reaches the preset standard, the solenoid valve corresponding to the sampler of the first channel is closed, and the solenoid valve corresponding to the sampler of the second channel is opened, and so on and so forth, so as to achieve the purpose of collecting aerosol samples that change with time. After the experiment is over, the aerosol samples collected by the sampler are chemically analyzed, and the aerosol changes during the experiment are comprehensively obtained in combination with the on-site changes during the experiment and the data of the particle sensor, so that the sampling data is more accurate.

[0013] The present invention reduces the impact of impact, water and dust on the aerosol sampling system and the risk of sampler damage by using the shell and the shell cover in coordination, and drives the rotating shaft to rotate through the output end of the motor, and the rotating shaft drives the rotating arm to rotate through the connecting seat, and the rotating arm drives the sampling port of the sampling pipeline to be fixed to a preset position, thereby effectively reducing the sampling loss and data error caused by the contamination of the core element in the pipeline and the accumulation of aerosol particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of a remote control aerosol sampling system for harsh environments.

[0015] Figure 2 A cross-sectional view of the housing of a remotely controlled aerosol sampling system for harsh environments.

[0016] Figure 3 The figure is a cross-sectional view of an aerosol sampling mechanism in a remote-controlled aerosol sampling system for use in a harsh environment.

[0017] Figure 4 The figure is a cross-sectional view of an aerosol sampling mechanism in a remote-controlled aerosol sampling system for use in a harsh environment.

[0018] In the figure: 1. shell; 2. connecting seat; 3. rotating arm; 4. sampling pipeline; 5. fixing card; 6. motor; 7. bearing with seat; 8. rotating shaft; 9. aerosol sampling mechanism; 10. shell cover; 11. observation window; 12. box; 13. controller; 14. flow meter; 15. air pump; 16. particle sensor; 17. first graded sampler; 18. second graded sampler; 19. solenoid valve; 20. display; 21. first TSP aerosol sampler; 22. second TSP aerosol sampler; 23. third TSP aerosol sampler; 24. fourth TSP aerosol sampler. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figures 1 to 4 In an embodiment of the present invention, a remote control aerosol sampling system for a harsh environment includes a shell 1 and a remote control module. An aerosol sampling mechanism 9 is fixedly installed in the shell 1. The aerosol sampling mechanism 9 includes a box 12. A controller 13, a flow meter 14, an air pump 15, a particle sensor 16 and a sampler are fixedly installed in the box 12 by bolts. A solenoid valve 19 corresponding to the sampler is also fixedly installed in the box 12. An air inlet is provided at the top of the box 12. A sampling pipeline 4 is plugged into the outer end of the air inlet. The sampling pipeline 4 runs through the side wall of the shell 1. The air inlet is commonly connected to the air inlet ends of the first graded sampler 17 and the second graded sampler 18. The air outlet end of the sampler is connected to the corresponding solenoid valve 19. The input end of the air pump 15 is commonly connected to the solenoid valve 19. The output end of the air pump 15 is connected to the input end of the flow meter 14. The output end of the flow meter 14 is connected to the air outlet of the box 12.

[0021] The display end of the display 20 passes through the side wall of the box 12 .

[0022] The housing 1 is provided with a housing cover 10 , and the housing cover 10 is provided with an observation window 11 , and the observation window 11 is located at the display 20 .

[0023] The inner wall of the shell 1 is fixedly connected to the motor 6, and the outer wall of the shell 1 is fixedly connected to the motor 6 with a seat bearing 7, a rotating shaft 8 is arranged through the seat bearing 7, the rotating shaft 8 is fixedly connected to the rotating end of the inner wall of the seat bearing 7, one end of the rotating shaft 8 passes through the side wall of the shell 1 and is fixedly connected to the output end of the motor 6, the outer end of the rotating shaft 8 is fixedly connected to a connecting seat 2, and a rotating arm 3 is fixedly connected to the connecting seat 2 by bolts, the sampling pipeline 4 is arranged on the outer wall of the rotating arm 3, and a plurality of fixing cards 5 are clamped on the sampling pipeline 4 of the rotating arm 3, and the fixing cards 5 are fixedly connected to the rotating arm 3 by screws.

[0024] The sampling pipeline 4 is a corrugated tube lined with polytetrafluoroethylene.

[0025] The box 12 also includes a timing controller and a communication module. The controller 13 is electrically connected to the timing controller, the communication module, the motor 6, the flow meter 14, the air pump 15, the solenoid valve 19 and the display 20 respectively. Embodiment 1

[0026] See also Figures 1 to 3 In an embodiment of the present invention, a remote control aerosol sampling system for harsh environments includes a housing 1 and a remote control module. An aerosol sampling mechanism 9 is fixedly installed in the housing 1. The aerosol sampling mechanism 9 includes a box 12. A controller 13, a flow meter 14, an air pump 15, a particle sensor 16, a first graded sampler 17 and a second graded sampler 18 are fixedly installed in the box 12 by bolts. The monitoring end of the particle sensor 16 passes through the box 12 and the housing 1. The box 12 is also fixedly installed with a first graded sampler 17 and a second graded sampler 18. The solenoid valve 19 corresponds to the sampler 18, and an air inlet is arranged on the top of the box body 12. The outer end of the air inlet is connected with a sampling pipeline 4, and the sampling pipeline 4 runs through the side wall of the outer shell 1. The air inlet is commonly connected to the air inlet ends of the first graded sampler 17 and the second graded sampler 18. The air outlet ends of the first graded sampler 17 and the second graded sampler 18 are connected to the corresponding solenoid valve 19. The input end of the air pump 15 is connected to the common solenoid valve 19, and the output end of the air pump 15 is connected to the input end of the flow meter 14, and the output end of the flow meter 14 is connected to the air outlet of the box body 12.

[0027] The display end of the display 20 passes through the side wall of the box 12. The outer shell 1 is provided with a shell cover 10. The shell cover 10 is provided with an observation window 11. The observation window 11 is located at the display 20. The display end of the display 20 is located outside the box 12. The data displayed by the display 20 can be conveniently observed through the observation window 11.

[0028] The inner wall of the shell 1 is fixedly connected to a motor 6, and the outer wall of the shell 1 is fixedly connected to a seat bearing 7 at the motor 6. A rotating shaft 8 is arranged through the seat bearing 7, and the rotating shaft 8 is fixedly connected to the rotating end of the inner wall of the seat bearing 7. One end of the rotating shaft 8 passes through the side wall of the shell 1 and is fixedly connected to the output end of the motor 6. The outer end of the rotating shaft 8 is fixedly connected to a connecting seat 2, and a rotating arm 3 is fixedly connected to the connecting seat 2 by bolts. The sampling pipeline 4 is arranged on the outer wall of the rotating arm 3, and the rotating arm 3 is provided with a plurality of fixing cards 5 on the sampling pipeline 4, and the fixing card 5 is fixedly connected to the rotating arm 3 by screws. When the control site monitors that the impact has passed or the test environment meets the standard, the aerosol sampling system is remotely controlled and started by the remote control module. After receiving the command, the system controls the motor 6 to work, and the output end of the motor 6 drives the rotating shaft 8 to rotate. The rotating shaft 8 drives the rotating arm 3 to rotate through the connecting seat 2, and the rotating arm 3 is fixed to the preset position with the sampling port of the sampling pipeline 4.

[0029] The sampling pipeline 4 is a corrugated tube lined with polytetrafluoroethylene. The polytetrafluoroethylene pipeline is lined in the corrugated tube to protect the sampling passage.

[0030] The box 12 also includes a timing controller and a communication module. The controller 13 is electrically connected to the timing controller, the communication module, the motor 6, the flow meter 14, the air pump 15, the particle sensor 16, the solenoid valve 19 and the display 20 respectively.

[0031] The control modes set in the controller 13 are real-time remote control and timing control. In the real-time remote control mode, the motor 6 is controlled by the remote control module, and the output end of the motor 6 drives the lifting of the rotating arm 3, the operation of the air pump 15, the opening and closing of the solenoid valve 19 through the rotating shaft 8 and the connecting seat 2, which are all manually controlled by the control end. The operator can control the sampler according to the experimental process, environmental changes, and real-time data; in the timing control mode, by presetting the lifting operation time of the rotating arm 3, the operation time of the air pump 15, and the sampling time of the first graded sampler 17 and the second graded sampler 18 in the timing controller, the first graded sampler 17 and the second graded sampler 18 are operated. The operation of each module is carried out in sequence according to the time sequence to realize the precise control of the experimental process; the changes of aerosol concentration and particle size distribution with the progress of the experiment and time are monitored and recorded during the experiment, and the generation, diffusion and transit of smoke and aerosol clusters in the experiment are scientifically detected. The opening and closing time of the sampler can be determined according to the real-time reading of the particle sensor 16, and aerosol samples in a specific interval can be collected. The particle sensor 16 adopts optical counting. The operating principle is that when aerosol particles enter the particle sensor 16, the particle size, quantity and concentration of the aerosol particles are recorded through the induced electrical signal of the light source inside the particle sensor 16, and the signal is transmitted to the controller 13.

[0032] When the control site monitors that the impact has passed or the test environment meets the standard, the aerosol sampling system is remotely controlled and started through the remote control module. After receiving the command, the system controls the motor 6 to work. The output end of the motor 6 drives the rotating shaft 8 to rotate. The rotating shaft 8 rotates with the rotating arm 3 through the connecting seat 2. The rotating arm 3 is fixed to the preset position with the sampling port of the sampling pipeline 4. At the same time, the air pump 15 is started, the solenoid valve 19 corresponding to the first graded sampler 17 is opened, and the solenoid valve 19 corresponding to the second graded sampler 18 is closed, and the aerosol particles at the target time and target position are collected. After the sampling amount or running time of the first graded sampler 17 reaches the preset standard, the solenoid valve 19 corresponding to the first graded sampler 17 is closed, and the solenoid valve 19 corresponding to the second graded sampler 18 is opened, and so on and so forth, the purpose of collecting aerosol samples that change with time is achieved. After the experiment, the aerosol samples collected by the sampler are chemically analyzed, and the aerosol changes during the experiment are comprehensively obtained by combining the on-site changes during the experiment and the data of the particle sensor 16. Embodiment 2

[0033] See also Figures 1-2 In the embodiment of the present invention, a remote control aerosol sampling system for harsh environment includes a housing 1 and a remote control module, wherein an aerosol sampling mechanism 9 is fixedly installed in the housing 1, wherein the aerosol sampling mechanism 9 includes a box 12, wherein a controller 13, a flow meter 14, an air pump 15, a particle sensor 16, a first TSP aerosol sampler 21, a second TSP aerosol sampler 22, a third TSP aerosol sampler 23 and a fourth TSP aerosol sampler 24 are fixedly installed in the box 12 by bolts, wherein a monitoring end of the particle sensor 16 passes through the box 12 and the housing 1, wherein the box 12 also includes a first TSP aerosol sampler 21, a second TSP aerosol sampler 22, a third TSP aerosol sampler 23 and a fourth TSP aerosol sampler 24. The solenoid valve 19 corresponding to the sampler 24, an air inlet is arranged on the top of the box body 12, a sampling pipeline 4 is plugged into the outer end of the air inlet, the sampling pipeline 4 runs through the side wall of the shell 1, the air inlet is commonly connected with the air inlet ends of the first TSP aerosol sampler 21, the second TSP aerosol sampler 22, the third TSP aerosol sampler 23 and the fourth TSP aerosol sampler 24, the air outlet ends of the first TSP aerosol sampler 21, the second TSP aerosol sampler 22, the third TSP aerosol sampler 23 and the fourth TSP aerosol sampler 24 are connected with the corresponding solenoid valve 19, the input end of the air pump 15 is connected with the common solenoid valve 19, the output end of the air pump 15 is connected with the input end of the flow meter 14, and the output end of the flow meter 14 is connected with the air outlet of the box body 12.

[0034] The display end of the display 20 passes through the side wall of the box 12. The outer shell 1 is provided with a shell cover 10. The shell cover 10 is provided with an observation window 11. The observation window 11 is located at the display 20. The display end of the display 20 is located outside the box 12. The data displayed by the display 20 can be conveniently observed through the observation window 11.

[0035] The inner wall of the shell 1 is fixedly connected to a motor 6, and the outer wall of the shell 1 is fixedly connected to a seat bearing 7 at the motor 6. A rotating shaft 8 is arranged through the seat bearing 7, and the rotating shaft 8 is fixedly connected to the rotating end of the inner wall of the seat bearing 7. One end of the rotating shaft 8 passes through the side wall of the shell 1 and is fixedly connected to the output end of the motor 6. The outer end of the rotating shaft 8 is fixedly connected to a connecting seat 2, and a rotating arm 3 is fixedly connected to the connecting seat 2 by bolts. The sampling pipeline 4 is arranged on the outer wall of the rotating arm 3, and the rotating arm 3 is provided with a plurality of fixing cards 5 on the sampling pipeline 4, and the fixing card 5 is fixedly connected to the rotating arm 3 by screws. When the control site monitors that the impact has passed or the test environment meets the standard, the aerosol sampling system is remotely controlled and started by the remote control module. After receiving the command, the system controls the motor 6 to work, and the output end of the motor 6 drives the rotating shaft 8 to rotate. The rotating shaft 8 drives the rotating arm 3 to rotate through the connecting seat 2, and the rotating arm 3 is fixed to the preset position with the sampling port of the sampling pipeline 4.

[0036] The sampling pipeline 4 is a corrugated tube lined with polytetrafluoroethylene. The polytetrafluoroethylene pipeline is lined in the corrugated tube to protect the sampling passage.

[0037] The box 12 also includes a timing controller and a communication module. The controller 13 is electrically connected to the timing controller, the communication module, the motor 6, the flow meter 14, the air pump 15, the particle sensor 16, the solenoid valve 19 and the display 20 respectively.

[0038] The control modes set in the controller 13 are real-time remote control and timing control. In the real-time remote control mode, the motor 6 is controlled by the remote control module, and the output end of the motor 6 drives the lifting of the rotating arm 3, the operation of the air pump 15, the opening and closing of the solenoid valve 19 through the rotating shaft 8 and the connecting seat 2, which are all manually controlled by the control end. The operator can control the sampler according to the experimental process, environmental changes, and real-time data; in the timing control mode, by presetting the lifting and lowering operation time of the rotating arm 3, the operation time of the air pump 15, the sampling time of the first TSP aerosol sampler 21, the second TSP aerosol sampler 22, the third TSP aerosol sampler 23 and the fourth TSP aerosol sampler 24 in the timing controller, the first TSP aerosol sampler 21, the second TSP aerosol sampler 22, the third TSP aerosol sampler 23 and the fourth TSP aerosol sampler 24 are controlled by the control end. During the operation of the first TSP aerosol sampler 22, the third TSP aerosol sampler 23 and the fourth TSP aerosol sampler 24, the operation of each module is performed in sequence according to the time sequence to achieve precise control of the experimental process; the changes in aerosol concentration and particle size distribution during the experiment with the progress and time of the experiment are monitored and recorded, and the generation, diffusion and transit of smoke and aerosol clusters in the experiment are scientifically detected. The sampler opening and closing time can be determined according to the real-time reading of the particle sensor 16, and aerosol samples in a specific interval are collected. The particle sensor 16 adopts optical counting. The operating principle is that when aerosol particles enter the particle sensor 16, the particle size, quantity and concentration of the aerosol particles are recorded through the induced electrical signal of the light source inside the particle sensor 16, and the signal is transmitted to the controller 13.

[0039] When the control site monitors that the impact has passed or the test environment meets the standard, the aerosol sampling system is remotely controlled and started through the remote control module. After receiving the command, the system controls the motor 6 to work. The output end of the motor 6 drives the rotating shaft 8 to rotate. The rotating shaft 8 rotates with the rotating arm 3 through the connecting seat 2. The rotating arm 3 is fixed to the preset position with the sampling port of the sampling pipeline 4. At the same time, the air pump 15 is started, the solenoid valve 19 corresponding to the first TSP aerosol sampler 21 is opened, and the other solenoid valves 19 are closed to start collecting aerosol particles at the target time and target position; after the sampling volume or running time of the first TSP aerosol sampler 21 reaches the preset standard, the solenoid valve 19 corresponding to the first TSP aerosol sampler 21 is closed, and the solenoid valve 19 corresponding to the second TSP aerosol sampler 22 is opened, and so on, to achieve the purpose of collecting aerosol samples that change with time. After the experiment, the aerosol samples collected by the sampler are chemically analyzed, and the aerosol changes during the experiment are comprehensively obtained by combining the on-site changes during the experiment and the data of the particle sensor 16.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A remote control aerosol sampling system for harsh environments, comprising a housing (1), characterized in that: An aerosol sampling mechanism (9) is fixedly installed in the housing (1), and the aerosol sampling mechanism (9) comprises a box (12), in which a controller (13), a flow meter (14), an air pump (15), a particle sensor (16) and a sampler are fixedly installed by bolts. A solenoid valve (19) corresponding to the sampler is also fixedly installed in the box (12). An air inlet is arranged at the top of the box (12), and a sampling pipeline (4) is plugged into the outer end of the air inlet. The sampling pipeline (4) runs through the side wall of the housing (1), and the air inlet is commonly connected to the air inlet end of the sampler. The air outlet end of the sampler is connected to the corresponding solenoid valve (19). The input end of the air pump (15) is commonly connected to the solenoid valve (19), the output end of the air pump (15) is connected to the input end of the flow meter (14), and the output end of the flow meter (14) is connected to the air outlet of the box (12).

2. The remote control aerosol sampling system for harsh environments according to claim 1, characterized in that: The display end of the display (20) passes through the side wall of the box (12).

3. The remote control aerosol sampling system for harsh environments according to claim 1, characterized in that: The housing (1) is provided with a housing cover (10), and the housing cover (10) is provided with an observation window (11), and the observation window (11) is located at the display (20).

4. The remote control aerosol sampling system for harsh environments according to claim 1, characterized in that: The inner wall of the housing (1) is fixedly connected to a motor (6); the outer wall of the housing (1) is fixedly connected to a bearing seat (7) at the motor (6); a rotating shaft (8) is provided through the bearing seat (7); the rotating shaft (8) is fixedly connected to the rotating end of the inner wall of the bearing seat (7); one end of the rotating shaft (8) passes through the side wall of the housing (1) and is fixedly connected to the output end of the motor (6); the outer end of the rotating shaft (8) is fixedly connected to a connecting seat (2); a rotating arm (3) is fixedly connected to the connecting seat (2) by bolts; a sampling pipeline (4) is provided on the outer wall of the rotating arm (3); a plurality of fixing clips (5) are clamped on the sampling pipeline (4) of the rotating arm (3); and the fixing clips (5) are fixedly connected to the rotating arm (3) by screws.

5. The remote control aerosol sampling system for harsh environments according to claim 1, characterized in that: The sampling pipeline (4) is a corrugated tube lined with polytetrafluoroethylene.

6. The remote control aerosol sampling system for harsh environments according to claim 1, characterized in that: The box (12) also includes a timing controller and a communication module, and the controller (13) is electrically connected to the timing controller, the communication module, the motor (6), the flow meter (14), the air pump (15), the particle sensor (16), the solenoid valve (19) and the display (20).

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