CN112213762A - Double-chamber emanometer calibrating device - Google Patents
Double-chamber emanometer calibrating device Download PDFInfo
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- CN112213762A CN112213762A CN202010659190.3A CN202010659190A CN112213762A CN 112213762 A CN112213762 A CN 112213762A CN 202010659190 A CN202010659190 A CN 202010659190A CN 112213762 A CN112213762 A CN 112213762A
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- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/167—Measuring radioactive content of objects, e.g. contamination
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- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
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Abstract
The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the radon leakage sound control alarm device comprises a radon chamber and accessory structures, a comprehensive controller, an environmental radon concentration monitoring device, a radon leakage sound control alarm device, a radon chamber computer management control system, a wall-mounted large-screen display system and mobile phone terminal software; a radon chamber multi-parameter monitoring system and a temperature and humidity control system are arranged in the radon chamber; the comprehensive controller is connected with the radon chamber multi-parameter monitoring system, the temperature and humidity control system and the environmental radon concentration monitoring device through an RS485 bus; the control signal of the integrated controller is connected with a control part of the radon chamber and the accessory structure and the radon leakage sound control alarm device; the radon chamber computer management control system is connected with the integrated controller through a USB interface, connected with the wall-mounted large-screen display system through an HDMI interface and connected with mobile phone terminal software through a cloud network; monitoring the whole set of radon measuring instrument calibration device by a radon chamber computer management control system; the invention has the advantages of full automation and intellectualization.
Description
Technical Field
The invention relates to the field of measurement, in particular to a radon measuring instrument calibration device and a radon measuring instrument calibration method, which solve the problems of automatic control in the radon measuring instrument calibration process and can achieve the aim of remote monitoring. Provides a rapid, convenient and reliable detection method and scheme for the detection of the emanometer.
Background
Radon is a tracer element, and the technology for measuring radon gas in soil is widely applied to the fields of resource exploration, geological structure exploration, ground subsidence exploration, coal field underground natural area exploration and the like. Radon is a radionuclide that, once inhaled into the human body, damages the human lung and increases the possibility of inducing lung cancer, and is one of the major pollutants harmful to the human body in the environment.
In order to achieve the purpose of measuring radon, a radon meter must be used for radon measurement. And the radon measuring instrument is used as a legal measuring instrument, and whether the measured value is accurate or not directly influences the measuring result, thereby influencing the environmental evaluation effect and the actual investigation application effect.
The device and the method for calibrating the radon detector are special equipment and a method for calibrating the radon detector, are also called a radon chamber, and are mainly used for comparison among laboratories, scales of a large-batch radon accumulation detector and a radon daughter measuring instrument, and various scientific experiments and basic researches under the conditions of different radon concentrations, temperatures and humidity. The radon concentration change of the radon chamber for mass instrument detection is determined by the radon source supply speed, the radon decay speed, the leakage rate of the system and the adsorption speed. Therefore, the system is not easy to control, has a plurality of influence factors, and can be built at a relatively high price but with a large volume.
The developed countries have established radon chambers from the 70 th century, and through many reconstruction and improvement, radon chambers capable of controlling various environmental conditions are established in the beginning of the 80 th century. For example, a national radon gas scale test device with advanced equipment is established in 1986 after an Elliot Lake Laboratory (ELL) in Canada is rebuilt twice; in 1995, the international radon dose group (IRMP) was established by IAEA, with radon chambers of 4 laboratories such as the environmental laboratory in new york, usa, the united states mining agency laboratory in colorado (USBM), the national radiation protection agency in gordon, uk (NRPB), and the radiation laboratory in melbourne, Australia (ARL) as 4 international regional calibration centers selected by the economic cooperation and development group (OCED). In addition, a radon chamber is also built in Sweden, a large amount of scale researches are carried out on various detectors for mining by the radon method, a set of relatively perfect standard system and scale device are arranged on the aspects of radon measurement standard and scale, and management experience on the aspect of quality assurance measures is very rich.
The establishment of radon chambers in China is still in the stage of continuous improvement and perfection. A simple and convenient small-sized movable radon chamber developed by Beijing geological research institute of the national nuclear industry department passes the department-level identification in 1988, and the radon chamber mainly controls the radon concentration and does not control the radon daughter concentration, aerosol, temperature, humidity and the like. In addition, the sixth institute of the Hunan Heyang Nuclear industry (RIUM) passes national defense dose assessment in 1990, becomes the coordination laboratory of two organizations in the international winter in 1991, obtains the authorization of the national quality and technology administration in 4 months 1999, and carries out the verification and test of the radon and daughter measuring instrument nationwide.
A large-scale rowed multifunctional radon chamber is built by the Chinese atomic energy science research institute in 2006, the volume of a main box body of the radon chamber is about 14.16m3, and an effective sampling area is about 10m 3. The standard radon chamber adopts a dynamic balance strip arrangement mode, has large sampling volume and can be used for testing and calibrating various active and passive instruments.
In recent years, national measurement departments such as the Chinese measurement science research institute and the Chinese testing technology research institute successively establish a standard radon chamber. The establishment of the standard radon chambers plays an important role in unifying the radon concentration value in the country. With the rapid development of economy and the improvement of the living standard of people, the demands on the exploration of mineral resources and the investigation and control of radon are increasingly outstanding. Thus establishing radon chambers and radon measurement standards, it has become a necessary and urgent task to carry out the magnitude transfer of radon measurement instruments across regions and nationwide.
At present, the existing radon chambers all adopt a single-chamber structure, and can not complete the automatic control of full multi-concentration points, which brings great inconvenience to the verification work of the radon measuring instrument.
Disclosure of Invention
The invention aims to provide a full-automatic calibration scheme for calibrating a radon measuring instrument by adopting a double-chamber design scheme, adopting an automatic radon concentration control method of a radon chamber and combining the means of remote monitoring, environmental monitoring and the like. The method provided by the invention is reasonable, has sufficient theoretical basis, mature and feasible realized technical scheme, can solve the comprehensive problems of working efficiency, automatic verification, environmental radon monitoring and protection and the like in the verification process of the existing radon measuring instrument, and is an advanced radon measuring instrument verification device and method.
In order to achieve the purpose of the invention, the adopted technical scheme is characterized in that: the radon leakage sound control alarm device comprises a radon chamber and accessory structures, a comprehensive controller, an environmental radon concentration monitoring device, a radon leakage sound control alarm device, a radon chamber computer management control system, a wall-mounted large-screen display system and mobile phone terminal software; a radon chamber multi-parameter monitoring system and a temperature and humidity control system are arranged in the radon chamber; the comprehensive controller is connected with the radon chamber multi-parameter monitoring system, the temperature and humidity control system and the environmental radon concentration monitoring device through an RS485 bus; the control signal of the integrated controller is connected with a control part of the radon chamber and the accessory structure and the radon leakage sound control alarm device; the radon chamber computer management control system is connected with the integrated controller through a USB interface, connected with the wall-mounted large-screen display system through an HDMI interface and connected with mobile phone terminal software through a cloud network; the radon chamber computer management control system monitors the whole set of radon measuring instrument calibration device.
The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the radon chamber and the accessory structure comprise a main radon chamber, a radon chamber multi-parameter monitoring system 1, an auxiliary radon chamber, a radon chamber multi-parameter monitoring system 2, a temperature and humidity controller, an air pump 1, an air pump 2, an air pump 3, an air pump 4, an air pump 5, an air pump with adjustable flow, an electromagnetic valve 1, an electromagnetic valve 2, an electromagnetic valve 3, an electromagnetic valve 4, an electromagnetic valve 5, an electromagnetic valve 6, an electromagnetic valve 7, an electromagnetic valve 8, an electromagnetic valve 9, an electromagnetic valve 10, an electromagnetic valve 11, a manual valve 1, a manual valve 2, a manual valve 3, a manual valve 4, a fan 1, a fan 2, a fan 3, a fan 4, a fan 5, a fan 6, active carbon, a 50L radon source mixing chamber; the radon chamber multi-parameter monitoring system 1 is arranged in the main radon chamber and comprises a temperature and humidity monitoring device, a pressure monitoring device, an alpha energy spectrum radon measuring device and an ionization chamber-based radon concentration standard device; the radon chamber multi-parameter monitoring system 2 is arranged in the auxiliary radon chamber and comprises a temperature and humidity monitoring device, a pressure monitoring device and an ionization chamber-based radon concentration standard device; the temperature and humidity controller is arranged in the main radon chamber; the solid radon source is arranged in a lead shielding chamber, and the lead shielding chamber is arranged in a 50L radon source mixing chamber; the lead shield cavity body is provided with an electric pump 1 and an electric pump 2 which are used for pumping radon into a radon source mixing chamber, wherein one electric pump is standby and the other electric pump works; a fan 1 and a fan 2 are arranged in the 50L radon source mixing chamber and are used for uniformly mixing radon sources, wherein one fan is standby, and the other fan works; the radon source mixing chamber is in gas circuit circulating connection with the main radon chamber through the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1, the manual valve 2, the flow-adjustable gas pump and the flowmeter; the radon source mixing chamber is in gas circuit circulating connection with the auxiliary radon chamber through the electromagnetic valve 6, the electromagnetic valve 7, the manual valve 3, the manual valve 4 and the air pump 5; the main radon chamber is in gas circuit circulation connection with the auxiliary radon chamber through a battery valve 8, an electromagnetic valve 9 and an air pump 3; the main radon chamber is connected with the indoor atmosphere through an electromagnetic valve 4 and is connected with the outdoor atmosphere through an electromagnetic valve 10 and an air pump 4 through active carbon; the auxiliary radon chamber is connected with the indoor atmosphere through an electromagnetic valve 5 and is connected with the outdoor atmosphere through an electromagnetic valve 10 and an air pump 4 through activated carbon;
the invention provides a double-chamber emanometer calibrating device, which is characterized in that: the integrated controller comprises a control circuit, a driving circuit, a parameter management circuit and an interface circuit; the interface circuit receives instruction signals of a radon chamber computer management control system, the control circuit sends out control signals, and the drive circuit drives the control signals to control the electromagnetic valve and the air pump to execute corresponding operations; the interface circuit also receives an instruction signal of a radon chamber computer management control system to read a main radon chamber temperature and humidity monitoring parameter, a pressure monitoring parameter and alpha energy spectrum radon measuring information, and reads the radon measuring information based on an ionization chamber radon concentration standard device and the auxiliary radon chamber temperature and humidity monitoring parameter, the pressure monitoring parameter and the radon measuring information based on the ionization chamber radon concentration standard device; the invention provides a double-chamber emanometer calibrating device, which is characterized in that: the environment radon concentration monitoring device is an ionization chamber radon measuring instrument with an RS485 interface, is arranged at the position of 0.8-1.5 meters in the indoor environment air of a radon chamber, and is used for monitoring the radon concentration of the air in the environment in real time; the wall-mounted large-screen display system is arranged on a liquid crystal display screen on the wall and is a display device for displaying the radon chamber control state and monitoring parameters on a real-time large screen.
The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the radon leakage sound control alarm device comprises a loudspeaker, a warning lamp, a driving power supply and a control interface; the radon chamber computer management control system reads radon monitoring data of an environment radon concentration monitoring device through the integrated controller, when the radon monitoring data exceed a warning value, a warning instruction is sent to the integrated controller, and the integrated controller receives the warning instruction and controls a loudspeaker and a warning lamp of the sound control alarm device through a driving power supply through a control interface.
The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the radon chamber computer management control system comprises a computer, a display interface, control software and a radon chamber parameter monitoring database; the radon chamber parameter monitoring database stores historical data of temperature, humidity, air pressure and radon concentration monitored by the radon chamber; the computer is connected with the workbench display and the wall-mounted large-screen display system at the same time.
The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the mobile phone terminal software is characterized in that radon chamber operation software is installed on a mobile phone terminal, and the mobile phone terminal software is connected with a radon chamber computer management control system through a network cloud platform and can remotely monitor and control the working state of the radon chamber.
The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the auxiliary radon chamber is respectively connected to the main radon chamber and the radon source mixing chamber, can acquire radon from the main radon chamber in a manual control mode, can also acquire radon from the auxiliary radon chamber, detects the radon concentration in the auxiliary radon chamber through the standard device, can close the valve to seal the radon chamber after the radon concentration reaches the target of the expected radon concentration, and enables the auxiliary radon chamber to keep a relatively stable radon concentration level for a long time, and also can manually supplement radon from the radon source mixing chamber to the inside of the mixing chamber to enable the auxiliary radon chamber to keep the corresponding radon concentration level for a long time.
The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the radon chamber computer management control system monitors the whole set of radon measuring instrument calibrating device, and the specific control working process of the main radon chamber is as follows:
opening a radon chamber, determining that a manual valve is opened, and starting the radon chamber after setting parameters; checking whether the radon chamber leaks air, if so, giving out an air leakage alarm, checking the tightness, treating, and then re-detecting whether the radon chamber leaks air until the detection is passed;
after the air leakage is detected, detecting whether temperature and humidity control is carried out on the radon chamber, if the temperature and humidity control is required, carrying out temperature control until the set temperature and humidity point is set and controlled, starting concentration point 1 control, if the temperature and humidity control is not carried out, directly starting concentration point 1 control, maintaining the corresponding duration on radon concentration point 1, and carrying out intermittent trace radon supplementation every 1 hour to ensure that the radon concentration of the radon chamber is constant;
after the control of the radon concentration point 1 of the radon chamber is finished, automatically judging whether to perform radon concentration point 2 control on the radon chamber, if the radon concentration point 2 control on the radon chamber is performed, entering a radon concentration point 2 control flow, and if the radon concentration point 2 control on the radon chamber is not performed, judging whether to perform radon discharge from the radon chamber;
after the control of the radon concentration point 2 of the radon chamber is finished, automatically judging whether to perform radon concentration point 3 control on the radon chamber, if the radon concentration point 3 control on the radon chamber is performed, entering a radon concentration point 3 control flow, and if the radon concentration point 3 control on the radon chamber is not performed, judging whether to perform radon discharge from the radon chamber;
after the control of the radon concentration point 3 of the radon chamber is completed, whether radon discharging of the radon chamber is performed or not is judged, when the radon discharging is required, the electromagnetic valve 4 and the electromagnetic valve 10 are opened, the electric pump 4 is started to enter the radon discharging process, when the radon discharging is not required, the radon storage mark of the radon chamber is set, the automatic alarm prompt is performed when the radon chamber is opened next time, and the automatic entering of the corresponding concentration point control can be set.
The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the radon chamber radon concentration point 1 control, the concentration point 2 control and the concentration point 3 control, and the specific process comprises the following steps: opening the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1 and the manual valve 2, then opening the air pump with adjustable flow, taking a small amount of radon gas from the radon source mixing chamber to enter the main radon chamber, then starting the alpha energy spectrum measuring device in the main radon chamber to quickly finish the initial measurement of radon concentration in the radon chamber, calculating radon supplementing amount according to the measured value, continuously pumping a proper amount of radon gas from the mixing chamber to enter the main radon chamber according to the radon supplementing amount, restarting the alpha energy spectrum measuring device in the main radon chamber to quickly measure and quickly monitor, finishing one-time micro radon supplementing control every 1 hour, and achieving the purpose of controlling the corresponding radon concentration point of the radon chamber;
the intermittent trace radon replenishing method comprises the steps of calculating radon replenishing quantity by a formula according to radioactive decay characteristics of radon and the existing radon concentration of a radon chamber, wherein lambda is a decay constant of radon, t is decay time, the radon chamber radon concentration value after the radon replenishing point on N (0) is used for replenishing the radon quantity required, opening the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1 and the manual valve 2, adjusting the flow of an adjustable air pump, taking trace radon gas from a radon source mixing chamber to enter a main radon chamber, and compensating the decay influence of the radon gas in the main radon chamber.
Drawings
FIG. 1 is a block diagram showing the system of a dual-chamber radon measuring instrument calibrating device.
FIG. 2 is a diagram showing the composition and connection of a radon chamber and the attached structures in a double-chamber radon measuring instrument calibrating device.
FIG. 3 is a control flow chart of the double-chamber radon measuring instrument calibrating device and method.
FIG. 4 is a flow chart of the radon concentration point control of a main radon chamber in a double-chamber radon measuring instrument calibration device.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the attached figure 1, the double-chamber radon measuring instrument calibrating device system comprises a radon chamber, an accessory structure, a comprehensive controller, an environmental radon concentration monitoring device, a radon leakage sound control alarm device, a radon chamber computer management control system, a wall-mounted large-screen display system and mobile phone terminal software; a radon chamber multi-parameter monitoring system and a temperature and humidity control system are arranged in the radon chamber; the comprehensive controller is connected with the radon chamber multi-parameter monitoring system, the temperature and humidity control system and the environmental radon concentration monitoring device through an RS485 bus; the control signal of the integrated controller is connected with a control part of the radon chamber and the accessory structure and the radon leakage sound control alarm device; the radon chamber computer management control system is connected with the integrated controller through a USB interface, connected with the wall-mounted large-screen display system through an HDMI interface and connected with mobile phone terminal software through a cloud network; the radon chamber computer management control system monitors the whole set of radon measuring instrument calibration device.
In the attached drawing 2, the radon chamber and the accessory structure comprise a main radon chamber, a radon chamber multi-parameter monitoring system 1, an auxiliary radon chamber, a radon chamber multi-parameter monitoring system 2, a temperature and humidity controller, an air pump 1, an air pump 2, an air pump 3, an air pump 4, an air pump 5, a flow-adjustable air pump, an electromagnetic valve 1, an electromagnetic valve 2, an electromagnetic valve 3, an electromagnetic valve 4, an electromagnetic valve 5, an electromagnetic valve 6, an electromagnetic valve 7, an electromagnetic valve 8, an electromagnetic valve 9, an electromagnetic valve 10, an electromagnetic valve 11, a manual valve 1, a manual valve 2, a manual valve 3, a manual valve 4, a fan 1, a fan 2, a fan 3, a fan 4, a fan 5, a fan 6, active carbon, a 50L rado; the radon chamber multi-parameter monitoring system 1 is arranged in the main radon chamber and comprises a temperature and humidity monitoring device, a pressure monitoring device, an alpha energy spectrum radon measuring device and an ionization chamber-based radon concentration standard device; the radon chamber multi-parameter monitoring system 2 is arranged in the auxiliary radon chamber and comprises a temperature and humidity monitoring device, a pressure monitoring device and an ionization chamber-based radon concentration standard device; the temperature and humidity controller is arranged in the main radon chamber; the solid radon source is arranged in a lead shielding chamber, and the lead shielding chamber is arranged in a 50L radon source mixing chamber; the lead shield cavity body is provided with an electric pump 1 and an electric pump 2 which are used for pumping radon into a radon source mixing chamber, wherein one electric pump is standby and the other electric pump works; a fan 1 and a fan 2 are arranged in the 50L radon source mixing chamber and are used for uniformly mixing radon sources, wherein one fan is standby, and the other fan works; the radon source mixing chamber is in gas circuit circulating connection with the main radon chamber through the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1, the manual valve 2, the flow-adjustable gas pump and the flowmeter; the radon source mixing chamber is in gas circuit circulating connection with the auxiliary radon chamber through the electromagnetic valve 6, the electromagnetic valve 7, the manual valve 3, the manual valve 4 and the air pump 5; the main radon chamber is in gas circuit circulation connection with the auxiliary radon chamber through a battery valve 8, an electromagnetic valve 9 and an air pump 3; the main radon chamber is connected with the indoor atmosphere through an electromagnetic valve 4 and is connected with the outdoor atmosphere through an electromagnetic valve 10 and an air pump 4 through active carbon; the auxiliary radon chamber is connected with the indoor atmosphere through an electromagnetic valve 5 and is connected with the outdoor atmosphere through an electromagnetic valve 10 and an air pump 4 through activated carbon;
in the attached figure 3, a radon chamber computer management control system monitors a whole set of radon measuring instrument calibration device, and the specific control working process of a main radon chamber is as follows:
opening a radon chamber, determining that a manual valve is opened, and starting the radon chamber after setting parameters; checking whether the radon chamber leaks air, if so, giving out an air leakage alarm, checking the tightness, treating, and then re-detecting whether the radon chamber leaks air until the detection is passed;
after the air leakage is detected, detecting whether temperature and humidity control is carried out on the radon chamber, if the temperature and humidity control is required, carrying out temperature control until the set temperature and humidity point is set and controlled, starting concentration point 1 control, if the temperature and humidity control is not carried out, directly starting concentration point 1 control, maintaining the corresponding duration on radon concentration point 1, and carrying out intermittent trace radon supplementation every 1 hour to ensure that the radon concentration of the radon chamber is constant;
after the control of the radon concentration point 1 of the radon chamber is finished, automatically judging whether to perform radon concentration point 2 control on the radon chamber, if the radon concentration point 2 control on the radon chamber is performed, entering a radon concentration point 2 control flow, and if the radon concentration point 2 control on the radon chamber is not performed, judging whether to perform radon discharge from the radon chamber;
after the control of the radon concentration point 2 of the radon chamber is finished, automatically judging whether to perform radon concentration point 3 control on the radon chamber, if the radon concentration point 3 control on the radon chamber is performed, entering a radon concentration point 3 control flow, and if the radon concentration point 3 control on the radon chamber is not performed, judging whether to perform radon discharge from the radon chamber;
after the control of the radon concentration point 3 of the radon chamber is completed, whether radon discharging of the radon chamber is performed or not is judged, when the radon discharging is required, the electromagnetic valve 4 and the electromagnetic valve 10 are opened, the electric pump 4 is started to enter the radon discharging process, when the radon discharging is not required, the radon storage mark of the radon chamber is set, the automatic alarm prompt is performed when the radon chamber is opened next time, and the automatic entering of the corresponding concentration point control can be set.
In the attached figure 4, radon concentration point 1 control, concentration point 2 control and concentration point 3 control are carried out in a radon chamber, and the specific process is as follows: opening the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1 and the manual valve 2, then opening the air pump with adjustable flow, taking a small amount of radon gas from the radon source mixing chamber to enter the main radon chamber, then starting the alpha energy spectrum measuring device in the main radon chamber to quickly finish the initial measurement of radon concentration in the radon chamber, calculating radon supplementing amount according to the measured value, continuously pumping a proper amount of radon gas from the mixing chamber to enter the main radon chamber according to the radon supplementing amount, restarting the alpha energy spectrum measuring device in the main radon chamber to quickly measure and quickly monitor, finishing one-time micro radon supplementing control every 1 hour, and achieving the purpose of controlling the corresponding radon concentration point of the radon chamber;
the intermittent trace radon replenishing method comprises the steps of calculating radon replenishing quantity by a formula according to radioactive decay characteristics of radon and the existing radon concentration of a radon chamber, wherein lambda is a decay constant of radon, t is decay time, the radon chamber radon concentration value after the radon replenishing point on N (0) is used for replenishing the radon quantity required, opening the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1 and the manual valve 2, adjusting the flow of an adjustable air pump, taking trace radon gas from a radon source mixing chamber to enter a main radon chamber, and compensating the decay influence of the radon gas in the main radon chamber.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and those modifications and decorations which can be made without creative efforts should also be regarded as the protection scope of the present invention.
Claims (10)
1. The invention provides a double-chamber emanometer calibrating device, which is characterized in that: the radon leakage sound control alarm device comprises a radon chamber and accessory structures, a comprehensive controller, an environmental radon concentration monitoring device, a radon leakage sound control alarm device, a radon chamber computer management control system, a wall-mounted large-screen display system and mobile phone terminal software; a radon chamber multi-parameter monitoring system and a temperature and humidity control system are arranged in the radon chamber; the comprehensive controller is connected with the radon chamber multi-parameter monitoring system, the temperature and humidity control system and the environmental radon concentration monitoring device through an RS485 bus; the control signal of the integrated controller is connected with a control part of the radon chamber and the accessory structure and the radon leakage sound control alarm device; the radon chamber computer management control system is connected with the integrated controller through a USB interface, connected with the wall-mounted large-screen display system through an HDMI interface and connected with mobile phone terminal software through a cloud network; the radon chamber computer management control system monitors the whole set of radon measuring instrument calibration device.
2. The dual chamber radon measuring instrument calibrating device as set forth in claim 1, wherein: the radon chamber and the accessory structure comprise a main radon chamber, a radon chamber multi-parameter monitoring system 1, an auxiliary radon chamber, a radon chamber multi-parameter monitoring system 2, a temperature and humidity controller, an air pump 1, an air pump 2, an air pump 3, an air pump 4, an air pump 5, an air pump with adjustable flow, an electromagnetic valve 1, an electromagnetic valve 2, an electromagnetic valve 3, an electromagnetic valve 4, an electromagnetic valve 5, an electromagnetic valve 6, an electromagnetic valve 7, an electromagnetic valve 8, an electromagnetic valve 9, an electromagnetic valve 10, an electromagnetic valve 11, a manual valve 1, a manual valve 2, a manual valve 3, a manual valve 4, a fan 1, a fan 2, a fan 3, a fan 4, a fan 5, a fan 6, active carbon, a 50L radon source mixing chamber; the radon chamber multi-parameter monitoring system 1 is arranged in the main radon chamber and comprises a temperature and humidity monitoring device, a pressure monitoring device, an alpha energy spectrum radon measuring device and an ionization chamber-based radon concentration standard device; the radon chamber multi-parameter monitoring system 2 is arranged in the auxiliary radon chamber and comprises a temperature and humidity monitoring device, a pressure monitoring device and an ionization chamber-based radon concentration standard device; the temperature and humidity controller is arranged in the main radon chamber; the solid radon source is arranged in a lead shielding chamber, and the lead shielding chamber is arranged in a 50L radon source mixing chamber; the lead shield cavity body is provided with an electric pump 1 and an electric pump 2 which are used for pumping radon into a radon source mixing chamber, wherein one electric pump is standby and the other electric pump works; a fan 1 and a fan 2 are arranged in the 50L radon source mixing chamber and are used for uniformly mixing radon sources, wherein one fan is standby, and the other fan works; the radon source mixing chamber is in gas circuit circulating connection with the main radon chamber through the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1, the manual valve 2, the flow-adjustable gas pump and the flowmeter; the radon source mixing chamber is in gas circuit circulating connection with the auxiliary radon chamber through the electromagnetic valve 6, the electromagnetic valve 7, the manual valve 3, the manual valve 4 and the air pump 5; the main radon chamber is in gas circuit circulation connection with the auxiliary radon chamber through a battery valve 8, an electromagnetic valve 9 and an air pump 3; the main radon chamber is connected with the indoor atmosphere through an electromagnetic valve 4 and is connected with the outdoor atmosphere through an electromagnetic valve 10 and an air pump 4 through active carbon; the auxiliary radon chamber is connected with the indoor atmosphere through an electromagnetic valve 5, and is connected with the outdoor atmosphere through an electromagnetic valve 10 and an air pump 4 through activated carbon.
3. The dual chamber radon measuring instrument calibrating device as set forth in claim 1, wherein: the integrated controller comprises a control circuit, a driving circuit, a parameter management circuit and an interface circuit; the interface circuit receives instruction signals of a radon chamber computer management control system, the control circuit sends out control signals, and the drive circuit drives the control signals to control the electromagnetic valve and the air pump to execute corresponding operations; the interface circuit also receives an instruction signal of a radon chamber computer management control system to read a main radon chamber temperature and humidity monitoring parameter, a pressure monitoring parameter and alpha energy spectrum radon measuring information, and reads the radon measuring information based on an ionization chamber radon concentration standard device and the auxiliary radon chamber temperature and humidity monitoring parameter, the pressure monitoring parameter and the radon measuring information based on the ionization chamber radon concentration standard device.
4. The dual chamber radon measuring instrument calibrating device as set forth in claim 1, wherein: the environment radon concentration monitoring device is an ionization chamber radon measuring instrument with an RS485 interface, is arranged at the position of 0.8-1.5 meters in the indoor environment air of a radon chamber, and is used for monitoring the radon concentration of the air in the environment in real time; the wall-mounted large-screen display system is arranged on a liquid crystal display screen on the wall and is a display device for displaying the radon chamber control state and monitoring parameters on a real-time large screen.
5. The dual chamber radon measuring instrument calibrating device as set forth in claim 1, wherein: the radon leakage sound control alarm device comprises a loudspeaker, a warning lamp, a driving power supply and a control interface; the radon chamber computer management control system reads radon monitoring data of an environment radon concentration monitoring device through the integrated controller, when the radon monitoring data exceed a warning value, a warning instruction is sent to the integrated controller, and the integrated controller receives the warning instruction and controls a loudspeaker and a warning lamp of the sound control alarm device through a driving power supply through a control interface.
6. The dual chamber radon measuring instrument calibrating device as set forth in claim 1, wherein: the radon chamber computer management control system comprises a computer, a display interface, control software and a radon chamber parameter monitoring database; the radon chamber parameter monitoring database stores historical data of temperature, humidity, air pressure and radon concentration monitored by the radon chamber; the computer is connected with the workbench display and the wall-mounted large-screen display system at the same time.
7. The dual chamber radon measuring instrument calibrating device as set forth in claim 1, wherein: the mobile phone terminal software is characterized in that radon chamber operation software is installed on a mobile phone terminal, and the mobile phone terminal software is connected with a radon chamber computer management control system through a network cloud platform and can remotely monitor and control the working state of the radon chamber.
8. A dual chamber radon measuring instrument calibrating device as defined in claim 2, wherein: the auxiliary radon chamber is respectively connected to the main radon chamber and the radon source mixing chamber, can acquire radon from the main radon chamber in a manual control mode, can also acquire radon from the auxiliary radon chamber, detects the radon concentration in the auxiliary radon chamber through the standard device, can close the valve to seal the radon chamber after the radon concentration reaches the target of the expected radon concentration, and enables the auxiliary radon chamber to keep a relatively stable radon concentration level for a long time, and also can manually supplement radon from the radon source mixing chamber to the inside of the mixing chamber to enable the auxiliary radon chamber to keep the corresponding radon concentration level for a long time.
9. The dual chamber radon measuring instrument calibrating device as set forth in claim 1, wherein: the radon chamber computer management control system monitors the whole set of radon measuring instrument calibrating device, and the specific control working process of the main radon chamber is as follows:
opening a radon chamber, determining that a manual valve is opened, and starting the radon chamber after setting parameters; checking whether the radon chamber leaks air, if so, giving out an air leakage alarm, checking the tightness, treating, and then re-detecting whether the radon chamber leaks air until the detection is passed;
after the air leakage is detected, detecting whether temperature and humidity control is carried out on the radon chamber, if the temperature and humidity control is required, carrying out temperature control until the set temperature and humidity point is set and controlled, starting concentration point 1 control, if the temperature and humidity control is not carried out, directly starting concentration point 1 control, maintaining the corresponding duration on radon concentration point 1, and carrying out intermittent trace radon supplementation every 1 hour to ensure that the radon concentration of the radon chamber is constant;
after the control of the radon concentration point 1 of the radon chamber is finished, automatically judging whether to perform radon concentration point 2 control on the radon chamber, if the radon concentration point 2 control on the radon chamber is performed, entering a radon concentration point 2 control flow, and if the radon concentration point 2 control on the radon chamber is not performed, judging whether to perform radon discharge from the radon chamber;
after the control of the radon concentration point 2 of the radon chamber is finished, automatically judging whether to perform radon concentration point 3 control on the radon chamber, if the radon concentration point 3 control on the radon chamber is performed, entering a radon concentration point 3 control flow, and if the radon concentration point 3 control on the radon chamber is not performed, judging whether to perform radon discharge from the radon chamber;
after the control of the radon concentration point 3 of the radon chamber is completed, whether radon discharging of the radon chamber is performed or not is judged, when the radon discharging is required, the electromagnetic valve 4 and the electromagnetic valve 10 are opened, the electric pump 4 is started to enter the radon discharging process, when the radon discharging is not required, the radon storage mark of the radon chamber is set, the automatic alarm prompt is performed when the radon chamber is opened next time, and the automatic entering of the corresponding concentration point control can be set.
10. The dual chamber radon measuring instrument calibrating device as set forth in claim 9, wherein: the radon chamber radon concentration point 1 control, the concentration point 2 control and the concentration point 3 control, and the specific process comprises the following steps: opening the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1 and the manual valve 2, then opening the air pump with adjustable flow, taking a small amount of radon gas from the radon source mixing chamber to enter the main radon chamber, then starting the alpha energy spectrum measuring device in the main radon chamber to quickly finish the initial measurement of radon concentration in the radon chamber, calculating radon supplementing amount according to the measured value, continuously pumping a proper amount of radon gas from the mixing chamber to enter the main radon chamber according to the radon supplementing amount, restarting the alpha energy spectrum measuring device in the main radon chamber to quickly measure and quickly monitor, finishing one-time micro radon supplementing control every 1 hour, and achieving the purpose of controlling the corresponding radon concentration point of the radon chamber;
the intermittent trace radon replenishing method comprises the steps of calculating radon replenishing quantity by a formula according to radioactive decay characteristics of radon and the existing radon concentration of a radon chamber, wherein lambda is a decay constant of radon, t is decay time, the radon chamber radon concentration value after the radon replenishing point on N (0) is used for replenishing the radon quantity required, opening the electromagnetic valve 1, the electromagnetic valve 2, the electromagnetic valve 3, the manual valve 1 and the manual valve 2, adjusting the flow of an adjustable air pump, taking trace radon gas from a radon source mixing chamber to enter a main radon chamber, and compensating the decay influence of the radon gas in the main radon chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010659190.3A CN112213762A (en) | 2020-07-09 | 2020-07-09 | Double-chamber emanometer calibrating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010659190.3A CN112213762A (en) | 2020-07-09 | 2020-07-09 | Double-chamber emanometer calibrating device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117310780A (en) * | 2023-11-28 | 2023-12-29 | 成都核盛科技有限公司 | Dual-channel full-automatic on-line measurement system and method for radon concentration in water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117310780A (en) * | 2023-11-28 | 2023-12-29 | 成都核盛科技有限公司 | Dual-channel full-automatic on-line measurement system and method for radon concentration in water |
| CN117310780B (en) * | 2023-11-28 | 2024-02-06 | 成都核盛科技有限公司 | Dual-channel full-automatic on-line measurement system and method for radon concentration in water |
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