Parallel double-light-chamber ozone concentration calibration and detection system and method

Abstract

The invention belongs to the technical field of ozone detection, and mainly relates to a parallel double-light-chamber ozone concentration calibration and detection system and a parallel double-light-chamber ozone concentration calibration and detection method. The parallel double-light-chamber ozone concentration calibration and detection system comprises a working platform, a sample gas pipeline, a zero gas pipeline, an ozone generator, an ozone remover, a first three-way valve, a second three-way valve, a parallel double-light-chamber assembly and a control module, the parallel double-light-chamber assembly comprises a light intensity detection device, and a first light chamber and a second light chamber which are assembled in parallel; when the system is in a calibration state, the ozone generator is connected to the working platform, the ozone remover is detached from the working platform, the zero gas pipeline is communicated with an inlet of the ozone generator and an inlet of the second three-way valve, and an outlet of the ozone generator is communicated with an inlet of the first three-way valve. According to the invention, both calibration and detection can be realized through one working platform, a calibration instrument does not need to be independently used for calibration when calibration is needed, and time is saved.

Description

Technical Field

[0001] The invention belongs to the technical field of ozone detection, and in particular relates to a parallel dual-light chamber ozone concentration calibration and detection system and method. Background Art

[0002] Ozone is a light blue gas with a special smell. In nature, ozone is mainly produced by photochemical reactions of oxygen in the atmosphere under the irradiation of ultraviolet rays. In the stratosphere, high-energy ultraviolet rays (wavelength less than 242nm) can decompose oxygen molecules (O2) into two oxygen atoms (O), which then combine with oxygen molecules to form ozone (O3). This process is extremely important for the earth's ecological environment, because ozone in the stratosphere can absorb ultraviolet rays in solar radiation and protect organisms on earth from damage by excessive ultraviolet rays.

[0003] Existing ozone detection devices usually have two air chambers, and the two air chambers are respectively supplied with gas without ozone removal and gas without ozone. The ozone concentration of the gases in the two air chambers is measured simultaneously, and then the ratio of the ozone concentrations in the two gases is calculated to calculate the actual ozone concentration. For example, a Chinese patent application document with application publication number CN118706776A discloses an ozone dual-channel detection device, which includes an air intake pipeline, a sample gas pipeline and a zero gas pipeline. The air intake pipeline is connected to the sample gas pipeline and the zero gas pipeline respectively; the zero gas pipeline is provided with An ozone removal tank; a sample gas valve, the air inlet end of the sample gas valve is connected to the sample gas pipeline; a reference valve, the air inlet end of the reference valve is connected to the zero gas pipeline; a first air chamber, the first air chamber is connected to the first air outlet ends of the sample gas valve and the reference valve, and the second air chamber is connected to the second air outlet ends of the sample gas valve and the reference valve through pipelines respectively; through the arrangement of the sample gas valve and the reference valve, the gas without ozone removal and the gas with ozone removal can be sent to the first air chamber and the second air chamber respectively, and the two gases can be measured at the same time without measurement time difference, thereby improving the accuracy of the final detection result.

[0004] However, the above-mentioned ozone dual-channel detection device can only detect the concentration of ozone, and cannot calibrate the ozone dual-channel detection device itself. If it needs to be calibrated, other separate calibration instruments are required to calibrate it, which wastes time. Summary of the invention

[0005] The present invention provides a parallel dual-light chamber ozone concentration calibration and detection system and method, so as to solve the problem of time wasting due to the inability of the device to calibrate itself in the prior art.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A parallel double light chamber ozone concentration calibration and detection system, comprising a work platform, a sample gas pipeline, a zero gas pipeline, an ozone generator, an ozone remover, a first three-way valve, a second three-way valve, a parallel double light chamber component and a control module; the ozone generator, the ozone remover and the work platform can be disassembled and assembled, the parallel double light chamber component comprises a light intensity detection device, a first light chamber and a second light chamber assembled in parallel, the first light chamber and the second light chamber are respectively used to react to the intensity of ultraviolet light when there is ozone and when there is no ozone, and the light intensity detection device is used to detect the intensity of ultraviolet light in the first light chamber and the second light chamber The ratio of the two outlets of the first three-way valve is connected to the first light chamber and the second light chamber respectively, and the two outlets of the second three-way valve are connected to the first light chamber and the second light chamber respectively; the control module is connected to the ozone generator, the ozone remover, the first three-way valve and the second three-way valve control, and is connected to the light intensity detection device signal; when the system is in the calibration state, the ozone generator is connected to the working platform, the ozone remover is removed from the working platform, the zero gas pipeline is connected to the inlet of the ozone generator and the inlet of the second three-way valve, and the outlet of the ozone generator is connected to the inlet of the first three-way valve. When the system is in the detection state, the ozone generator is removed from the working platform, the ozone remover is connected to the working platform, the sample gas pipeline is connected to the inlet of the ozone remover and the inlet of the first three-way valve, and the outlet of the ozone remover is connected to the inlet of the second three-way valve.

[0008] Beneficial effect: The present invention uses the same working platform, and only needs to remove or install the corresponding ozone remover or ozone generator according to the required requirements; when in the calibration state, the ozone remover is removed, the ozone generator is installed, and the standard gas is input into the zero gas pipeline. The standard gas is divided into two parts and enters the ozone generator and the second three-way valve respectively. The zero gas entering the ozone generator is converted into ozone and then enters the first three-way valve. The ozone and the standard gas enter the first light chamber and the second light chamber respectively. The light intensity detection device detects the ratio of the ultraviolet light intensity in the first light chamber and the second light chamber. The control module calculates its value and obtains the ozone concentration in the sample gas. If the difference between this concentration and the concentration of ozone generated by the above-mentioned ozone generator exceeds the standard range, the control module is used to calculate the ozone concentration in the sample gas. The block adjusts the ozone concentration calculated by the parallel dual light chamber assembly and the working concentration set by the ozone generator to within the set error range; when it is necessary to detect the sample gas concentration, the ozone generator is removed from the work platform, and an ozone remover is installed on the work platform. The ozone concentration in the sample gas is detected using the calibrated parallel dual light chamber assembly. The sample gas is divided into two parts and enters the ozone remover and the first three-way valve respectively. The sample gas entering the ozone remover is purified by the ozone remover to become a reference gas without ozone and then enters the second three-way valve. The reference gas and the sample gas enter the first light chamber and the second light chamber respectively. The light intensity detection device detects the ratio of the ultraviolet light intensity in the first light chamber and the second light chamber. The control module calculates its value and obtains the ozone concentration in the sample gas.

[0009] The present invention can realize both calibration and detection through a working platform, and is multi-purpose. It only needs to install or remove the required components to achieve the use of detection and calibration functions, thereby reducing development costs. When calibration is required, it is no longer necessary to use a calibration instrument separately to calibrate it. It is only necessary to replace the required components to achieve the calibration function, thereby saving time.

[0010] Furthermore, the zero gas pipeline has two zero gas branches, each of which is provided with a pressure regulating valve, which is used to adjust the zero gas flow in the two zero gas pipelines to be consistent, and the first light chamber and the second light chamber are both connected to a flow sensor.

[0011] Beneficial effect: The flow sensor can detect the flow of gas in the first light chamber and the second light chamber. If the gas flow rates of the first light chamber and the second light chamber are different, the flow rates can be adjusted by the corresponding pressure regulating valve to ensure that the gas flow rates of the first light chamber and the second light chamber are the same.

[0012] Furthermore, the left ends of the first light chamber and the second light chamber are connected with a first mounting seat, and the first mounting seat is provided with a mercury lamp located in the middle position of the front and rear of the first mounting seat, two reflecting mirrors located at two positions symmetrical about the front and rear of the mercury lamp, and a filter for screening specific wavelengths; the right ends of the first light chamber and the second light chamber are connected with a second mounting seat, and the second mounting seat is provided with a light-transmitting mirror and a temperature sensor for protecting the light intensity detection device at the right end; and a fixing seat for fixing the two light chambers is provided between the first mounting seat and the second mounting seat.

[0013] Beneficial effects: Mercury lamps are better than zinc lamps in terms of service life and light intensity maintenance; the reflector can reflect the light beams emitted by the mercury lamp into the first light chamber and the second light chamber respectively; the filter plays a role in screening specific wavelengths, and the light-transmitting mirror plays a role in protecting the rear-end detector, and both have a sealing function.

[0014] Furthermore, a heating device is provided beside the mercury lamp.

[0015] Beneficial effect: The temperature sensor can detect the temperature in the first light chamber and the second light chamber. If the temperature is too low, the heating device can adjust the temperature in the first light chamber and the second light chamber to ensure that the temperature meets the temperature conditions for the light source to be normally turned on and the light intensity to be kept stable.

[0016] Furthermore, the ozone generator is provided with an ionization chamber and a compression chamber which are separated from each other and arranged in parallel, and the ionized ozone can be compressed from the ionization chamber into the compression chamber.

[0017] Beneficial effect: The ozone generator adopts isolated parallel compression double chambers. The generated ozone can be compressed into the compression chamber, which creates a time difference with the ionization process, avoiding the situation of changing output while ionizing, and further maintaining the stability of ozone output, which is more stable than the ozone output from a single chamber.

[0018] Furthermore, a detachably connected parallel cavity is provided on the zero gas pipeline, and the inlet and outlet of the parallel cavity are respectively connected to the outlet of the ozone generator and the inlet of the first three-way valve to maintain the consistency of the ozone concentration output from the ozone generator.

[0019] Beneficial Effects: Parallel chambers can maintain the consistency of ozone concentration output from the ozone generator.

[0020] Furthermore, the working platform is box-shaped and has an installation cavity, in which a partition extending in the left-right direction is provided, and the pressure regulating valve, ozone generator, ozone remover, dual light chamber assembly, flow sensor, first three-way valve, second three-way valve and parallel cavity are all located on the rear side of the partition, and the first three-way valve and the second three-way valve and the two pressure regulating valves are arranged at intervals in the left-right direction, the two pressure regulating valves are located on the rear side of the first three-way valve and the second three-way valve, and the dual light chamber assembly is located on the rear side of the two pressure regulating valves.

[0021] Furthermore, a power source is provided on the working platform at the front side of the partition, and an air pump is provided on the working platform at the rear side of the partition.

[0022] Beneficial effect: The vacuum pump facilitates the extraction of the gas after detection and calibration, and prevents the residual gas from remaining in the first optical chamber, the second optical chamber or the gas path to affect the subsequent detection and calibration.

[0023] Furthermore, the working platform is provided with a display unit and an operating unit.

[0024] Beneficial effects: The display unit is convenient for operators to view, and the integrated operation unit is convenient for operators to operate.

[0025] A parallel dual-light chamber ozone concentration calibration and detection method, comprising the following methods:

[0026] An ozone generator, a pressure regulating valve and a parallel chamber are installed on the working platform, and the ozone concentration calculated by the parallel dual light chamber assembly and the working concentration set by the ozone generator are adjusted to within a set error range through a control module to calibrate the ozone concentration of the parallel dual light chamber assembly;

[0027] The ozone generator, pressure regulating valve and parallel chamber are removed from the working platform, and an ozone remover is installed on the working platform. The ozone concentration in the sample gas is detected using a calibrated parallel double optical chamber assembly.

[0028] Beneficial effects: The present invention can realize both calibration and detection through a working platform, and is multi-purpose. It only needs to install or remove the required components to achieve the use of detection and calibration functions, thereby reducing development costs. When calibration is required, it is no longer necessary to use a separate calibration instrument to calibrate it. It is only necessary to replace the required components to achieve the calibration function, thereby saving time. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0030] Figure 1 It is a structural schematic diagram of the parallel dual-light chamber ozone concentration calibration system of the present invention;

[0031] Figure 2 Schematic diagram of the structure of the first light chamber (the second light chamber has the same structure as the first light chamber);

[0032] Figure 3 for Figure 2 Middle AA section view;

[0033] Figure 4 is a schematic diagram of the structure of an ozone generator;

[0034] Figure 5 for Figure 4 Middle BB section view;

[0035] Figure 6 It is a structural schematic diagram of the parallel dual-light chamber ozone concentration detection system of the present invention;

[0036] Figure 7 It is a schematic diagram of the process of the parallel dual-light chamber ozone concentration calibration system of the present invention;

[0037] Figure 8 It is a schematic diagram of the process of the parallel dual-light chamber ozone concentration detection system of the present invention.

[0038] Description of reference numerals:

[0039] 1. First three-way valve; 2. Second three-way valve; 3. Ozone generator; 4. Exhaust pipe; 5. Working platform; 6. Inlet pipe; 7. Pressure regulating valve; 8. Parallel cavity; 9. Mercury lamp; 10. Reflector; 11. Fixing seat; 12. First light chamber; 13. Second light chamber; 14. Ozone remover; 15. Flow sensor; 16. Heating device; 17. Temperature sensor; 18. Compression chamber; 19. Transparent mirror; 20. Control module; 21. Filter; 22. Ionization chamber. DETAILED DESCRIPTION

[0040] 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. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0041] Various non-limiting embodiments of the present invention are described in detail below. Any number of elements in the accompanying drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0042] The present invention provides a parallel dual-light chamber ozone concentration calibration and detection system:

[0043] like Figure 1 and Figure 7 As shown, a parallel dual-light chamber ozone concentration calibration and detection system includes an air inlet pipe 6, an air outlet pipe 4, a working platform 5, a sample gas pipeline, a zero gas pipeline, an ozone generator 3, an ozone remover 14, a pressure regulating valve 7, a temperature sensor 17, a flow sensor 15, a power supply, a parallel cavity 8, a first three-way valve 1, a second three-way valve 2, a parallel dual-light chamber assembly and a control module 20.

[0044] like Figure 1 As shown, the working platform 5 is box-shaped. In this embodiment, for ease of description, the length direction of the working platform 5 is defined as the left-right direction, the width direction of the working platform 5 is defined as the front-back direction, and the height direction of the working platform 5 is defined as the up-down direction.

[0045] like Figure 1 and Figure 6 As shown, the working platform 5 has an installation cavity, in which a partition extending in the left-right direction is provided, and the air inlet pipe 6, the air outlet pipe 4, the sample gas pipeline, the zero gas pipeline, the ozone generator 3, the ozone remover 14, the temperature sensor 17, the pressure regulating valve 7, the flow sensor 15, the parallel cavity 8, the first three-way valve 1, the second three-way valve 2, and the parallel double light chamber assembly are all located at the rear side of the partition, and the first three-way valve 1 and the second three-way valve 2 are arranged at intervals in the left-right direction, the two pressure regulating valves 7 are arranged at intervals in the left-right direction, the two pressure regulating valves 7 are located at the rear side of the first three-way valve 1 and the second three-way valve 2, the double light chamber assembly is located at the rear side of the two pressure regulating valves 7, and the parallel cavity 8 is detachably mounted on the inner side wall of the installation cavity by nuts and bolts; the control module 20 and the power supply are located at the front side of the partition. A display unit and an operation unit are also installed on the working platform 5 for manual operation.

[0046] like Figure 1 , Figure 2 and Figure 3 As shown, the parallel double light chamber assembly includes a light intensity detection device, a first light chamber 12 and a second light chamber 13 assembled in parallel, the first light chamber 12 and the second light chamber 13 are respectively used to react to the intensity of ultraviolet light when there is ozone and when there is no ozone, and the light intensity detection device is used to detect the ratio of the ultraviolet light intensity in the first light chamber 12 and the second light chamber 13; the left ends of the first light chamber 12 and the second light chamber 13 are connected to a first mounting seat, and the first mounting seat is provided with a mercury lamp 9 located in the middle position of the front and rear of the first mounting seat, two reflectors 10 located at two positions symmetrical about the front and rear of the mercury lamp 9, and a filter 21 for screening a specific wavelength. The mercury lamp 9 is better than the zinc lamp, and has advantages in service life and light intensity maintenance; a heating device 16 is provided on the side of the mercury lamp 9, and the above-mentioned temperature sensor 17 can detect the temperature of the first light chamber 12 and the second light chamber 13. The temperature inside, if the temperature is too low, the heating device 16 can adjust the temperature inside the first light chamber 12 and the second light chamber 13 to ensure that the temperature meets the temperature conditions for the normal opening of the light source and the stable maintenance of the light intensity. The two reflectors 10 are at an angle of 45 degrees in the left and right directions, and the reflectors 10 can reflect the light beams emitted by the mercury lamp 9 into the first light chamber 12 and the second light chamber 13 respectively; the filter 21 plays a role in screening specific wavelengths, and the light-transmitting mirror 19 plays a role in protecting the rear-end detector, and both have a sealing function; the right ends of the first light chamber 12 and the second light chamber 13 are connected to the second mounting seat, and the second mounting seat is provided with a light-transmitting mirror 19 and a temperature sensor 17 for protecting the right-end light intensity detection device; and a fixing seat 11 for fixing the two light chambers is provided between the first mounting seat and the second mounting seat. The two three-way valves are solenoid valves, and the horizontal and vertical comparison of the absorption light intensity of the sample gas and the reference gas is achieved by controlling the working sequence and time of the solenoid valves.

[0047] like Figure 4 and Figure 5 As shown, the ozone generator 3 is provided with an ionization chamber 22 and a compression chamber 18 which are separated from each other and arranged in parallel. The ionized ozone can be compressed from the ionization chamber 22 into the compression chamber 18, which produces a time difference with the ionization process, avoiding the situation where the output changes while ionizing, and further maintaining the stability of the ozone output, which is more stable than the ozone output from a single chamber. In addition, the cylindrical light source is arranged co-center with the air inlet. After the gas enters the ozone generator 3, the light source can ionize the gas 360 degrees without dead angles, making full use of the irradiation area of ​​the light source and improving the ozone generation efficiency.

[0048] like Figure 1 , Figure 6 and Figure 7As shown, the ozone generator 3 and the ozone remover 14 are detachably mounted on the working platform 5 by bolts and nuts; the two outlets of the first three-way valve 1 are respectively connected to the first light chamber 12 and the second light chamber 13, and the two outlets of the second three-way valve 2 are respectively connected to the first light chamber 12 and the second light chamber 13; two flow sensors 15 are provided, and the two flow sensors 15 are respectively installed at the outlet positions of the first light chamber 12 and the second light chamber 13, for detecting the flow sizes of the two light chambers; the air outlet pipe 4 is connected to the first light chamber 12 and the second light chamber 13; the air pump is connected to the air outlet pipe 4, for extracting all the gas in the pipeline and the light chamber after the detection or calibration is completed.

[0049] like Figure 1 and Figure 7 As shown, when the system is in the calibration state, the ozone generator 3, the parallel chamber 8, and the pressure regulating valve 7 are all installed on the working platform 5, and the ozone remover 14 is removed from the working platform 5. The zero gas pipeline has two zero gas branches, namely the first zero gas branch and the second zero gas branch. The air inlet pipe 6 is connected to the first zero gas branch and the second zero gas branch. The first zero gas branch is connected to the inlet of the ozone generator 3, and the outlet of the ozone generator 3 is connected to the inlet of the first three-way valve 1. The second zero gas branch is connected to the inlet of the second three-way valve 2. The inlet and outlet of the parallel chamber 8 are respectively connected to the outlet of the ozone generator 3 and the inlet of the first three-way valve 1 to maintain the consistency of the ozone concentration output from the ozone generator 3. There are two pressure regulating valves 7, which are respectively connected to the inlet of the second three-way valve 2 and the inlet of the ozone generator 3.

[0050] like Figure 6 and Figure 8 As shown, when the system is in the detection state, the ozone generator 3, the parallel chamber 8, and the pressure regulating valve 7 are removed from the working platform 5, and the ozone remover 14 is installed on the working platform 5. The sample gas pipeline has two sample gas branches, namely the first sample gas branch and the second sample gas branch. The air inlet pipe 6 is connected to the first sample gas branch and the second sample gas branch. The first sample gas branch is connected to the inlet of the first three-way valve 1, and the second sample gas branch is connected to the inlet of the ozone remover 14. The outlet of the ozone remover 14 is connected to the inlet of the second three-way valve 2.

[0051] The working process of the present invention is as follows:

[0052] When the system is in the calibration state, the ozone remover 14 is removed, the ozone generator 3, the pressure regulating valve 7 and the parallel cavity 8 are installed, and the standard gas is input into the air inlet pipe 6. The standard gas is divided into two parts and enters the ozone generator 3 and the second three-way valve 2 through the first zero gas branch and the second zero gas branch respectively. The zero gas entering the ozone generator 3 is converted into ozone and then enters the first three-way valve 1. The ozone and the standard gas enter the first light chamber 12 and the second light chamber 13 respectively. The light intensity detection device detects the ratio of the ultraviolet light intensity in the first light chamber 12 and the second light chamber 13. The control module 20 calculates its value and obtains the ozone concentration in the sample gas. If the difference between this concentration and the concentration of ozone generated by the above-mentioned ozone generator 3 exceeds the standard range, the ozone concentration calculated by the parallel dual light chamber assembly and the working concentration set by the ozone generator 3 are adjusted to the set error range through the control module 20.

[0053] When it is necessary to detect the concentration of the sample gas, the ozone generator 3, the pressure regulating valve 7 and the parallel cavity 8 are removed from the working platform 5, and the ozone remover 14 is installed on the working platform 5. The ozone concentration in the sample gas is detected by using the calibrated parallel double light chamber assembly, and the sample gas is input into the air inlet pipe 6. The sample gas is divided into two parts and enters the ozone remover 14 and the first three-way valve 1 respectively through the second sample gas branch and the first sample gas branch. The sample gas entering the ozone remover 14 is purified by the ozone remover 14 into a reference gas without ozone and then enters the second three-way valve 2. The reference gas and the sample gas enter the first light chamber 12 and the second light chamber 13 respectively. The light intensity detection device detects the ratio of the ultraviolet light intensity in the first light chamber 12 and the second light chamber 13. The control module 20 uses I / I0=e -KLC Principle (K is 308cm -1 , molecular absorption coefficient at zero degrees and 1 atmosphere, L is the length of the light chamber, C is the ozone concentration, I is the ultraviolet light intensity variable of the first light chamber 12, I0 is the ultraviolet light intensity of the second light chamber 13, and I / I0 is the ratio detected by the light intensity detection device) to calculate its values ​​and obtain the ozone concentration in the sample gas.

[0054] The present invention can realize both calibration and detection through a working platform 5, and has multiple uses. It only needs to install or remove the required components to achieve the detection and calibration functions, thereby reducing the development cost. When calibration is required, it is no longer necessary to use a calibration instrument separately to calibrate it. It is only necessary to replace the required components to achieve the calibration function, thereby saving time.

[0055] The present invention provides a parallel dual-light chamber ozone concentration detection and calibration method:

[0056] The parallel dual-light chamber ozone concentration calibration and detection method is carried out using the above parallel dual-light chamber ozone concentration calibration and detection system, and the core is summarized as follows:

[0057] The specific method has been described in the above-mentioned embodiment of the parallel dual-light chamber ozone concentration calibration and detection system, so it will not be repeated here.

Claims

1. A parallel dual-light chamber ozone concentration calibration and detection system, characterized in that: It includes a working platform, a sample gas pipeline, a zero gas pipeline, an ozone generator, an ozone remover, a first three-way valve, a second three-way valve, a parallel double light chamber assembly and a control module; The ozone generator, the ozone remover and the working platform are detachable and assembled, the parallel dual light chamber assembly includes a light intensity detection device, a first light chamber and a second light chamber assembled in parallel, the first light chamber and the second light chamber are respectively used to react to the intensity of ultraviolet light when there is ozone and when there is no ozone, and the light intensity detection device is used to detect the ratio of the ultraviolet light intensity in the first light chamber and the second light chamber; the two outlets of the first three-way valve are respectively connected to the first light chamber and the second light chamber, and the two outlets of the second three-way valve are respectively connected to the first light chamber and the second light chamber; The control module is control-connected to the ozone generator, the ozone remover, the first three-way valve and the second three-way valve, and is signal-connected to the light intensity detection device; When the system is in calibration state, the ozone generator is connected to the working platform, the ozone rejector is removed from the working platform, the zero gas pipeline is connected to the inlet of the ozone generator and the inlet of the second three-way valve, and the outlet of the ozone generator is connected to the inlet of the first three-way valve. When the system is in the detection state, the ozone generator is removed from the working platform, the ozone remover is connected to the working platform, the sample gas pipeline is connected to the inlet of the ozone remover and the inlet of the first three-way valve, and the outlet of the ozone remover is connected to the inlet of the second three-way valve.

2. A parallel dual-light chamber ozone concentration calibration and detection system according to claim 1, characterized in that: The zero gas pipeline has two zero gas branches, and pressure regulating valves are respectively provided on the two zero gas branches. The pressure regulating valves are used to adjust the zero gas flow rates in the two zero gas pipelines to be consistent. The first light chamber and the second light chamber are both connected to flow sensors.

3. A parallel dual-light chamber ozone concentration calibration and detection system according to claim 2, characterized in that: The left ends of the first light chamber and the second light chamber are connected with a first mounting seat, and a mercury lamp located in the middle position of the front and rear of the first mounting seat, two reflectors located at two positions symmetrical about the front and rear of the mercury lamp, and a filter for screening specific wavelengths are arranged in the first mounting seat; the right ends of the first light chamber and the second light chamber are connected with a second mounting seat, and a light-transmitting mirror and a temperature sensor for protecting the light intensity detection device at the right end are arranged on the second mounting seat; and a fixing seat for fixing the two light chambers is arranged between the first mounting seat and the second mounting seat.

4. A parallel dual-light chamber ozone concentration calibration and detection system according to claim 3, characterized in that: A heating device is arranged beside the mercury lamp.

5. A parallel dual-light chamber ozone concentration calibration and detection system according to any one of claims 1 to 4, characterized in that: The ozone generator is provided with an ionization chamber and a compression chamber which are separated from each other and arranged in parallel, and the ionized ozone can be compressed from the ionization chamber into the compression chamber.

6. A parallel dual-light chamber ozone concentration calibration and detection system according to claim 5, characterized in that: The zero gas pipeline is provided with a detachably connected parallel cavity, the inlet and outlet of the parallel cavity are respectively connected to the outlet of the ozone generator and the inlet of the first three-way valve to maintain the consistency of the ozone concentration output from the ozone generator.

7. A parallel dual-light chamber ozone concentration calibration and detection system according to claim 6, characterized in that: The working platform is box-shaped and has an installation cavity. A partition extending in the left-right direction is provided in the installation cavity. The pressure regulating valve, ozone generator, ozone remover, dual light chamber assembly, flow sensor, first three-way valve, second three-way valve and parallel cavity are all located on the rear side of the partition. The first three-way valve, the second three-way valve and the two pressure regulating valves are arranged at intervals in the left-right direction. The two pressure regulating valves are located on the rear sides of the first three-way valve and the second three-way valve, and the dual light chamber assembly is located on the rear sides of the two pressure regulating valves.

8. A parallel dual-light chamber ozone concentration calibration and detection system according to claim 7, characterized in that: A power source is provided on the working platform at the front side of the partition, and an air pump is provided on the working platform at the rear side of the partition.

9. A parallel dual-light chamber ozone concentration calibration and detection system according to any one of claims 1 to 4, characterized in that: The working platform is provided with a display unit and an operating unit.

10. A parallel dual-light chamber ozone concentration calibration and detection method, characterized in that: A parallel dual-light chamber ozone concentration calibration and detection system according to any one of claims 1 to 9 is used, comprising the following method: installing an ozone generator on a work platform, and adjusting the ozone concentration calculated by the parallel dual-light chamber assembly and the working concentration set by the ozone generator to within a set error range through a control module to calibrate the ozone concentration of the parallel dual-light chamber assembly; The ozone generator is removed from the working platform, and an ozone remover is installed on the working platform. The ozone concentration in the sample gas is detected using a calibrated parallel double light chamber assembly.

Images