Double-light-path ozone detection device based on sapphire

Abstract

The invention provides a sapphire-based dual-optical-path ozone detection device, and belongs to the technical field of ozone detection devices.The sapphire-based dual-optical-path ozone detection device comprises a measuring cavity, the measuring cavity is in a cuboid box shape, a to-be-detected liquid is placed in the measuring cavity, and a transition chamber is arranged on the rear side wall of the measuring cavity; the transition chamber is located in the center of the rear side wall of the measuring cavity, an ultraviolet lamp chamber and a filter chamber are further arranged at the two ends of the transition chamber on the rear side wall of the measuring cavity, a light outlet hole of the ultraviolet lamp chamber faces the transition chamber and is used for emitting ultraviolet light, and an ultraviolet spectroscope is arranged in the transition chamber and used for splitting light emitted by the transition chamber. The reflected light of the ultraviolet spectroscope faces the direction of the measuring cavity, the transmitted light of the ultraviolet spectroscope faces the direction of the filter chamber, a first detector behind the filter chamber is used for detecting the transmitted ultraviolet light, and a second ultraviolet detector on the front side of the measuring cavity is used for detecting the ultraviolet light reflected by the ultraviolet spectroscope; interference of the external environment can be reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of ozone detection devices. Specifically, it relates to a dual - optical - path ozone detection device based on sapphire. Background Art

[0002] Ozone is a gas composed of three oxygen atoms and has strong oxidizing properties. It exists in both the stratosphere and near the ground in the atmosphere. Ozone in the stratosphere plays a protective role for the earth's organisms, while ozone near the ground is a pollutant and is harmful to human health and the environment. High - concentration ozone can cause irritation to the human respiratory system, eyes and skin, and long - term exposure may lead to chronic diseases. Detecting ozone concentration helps with early warning and protection. In industrial production, ozone may be produced as a by - product, and detecting its concentration can ensure the safety of the working environment.

[0003] Currently, common ozone detection technologies include chemiluminescence method, ultraviolet absorption method, electrochemistry method, etc. Although these technologies are relatively mature, there are still some problems in practical applications. Existing ozone detection devices are easily affected by environmental factors such as temperature, humidity, and air pressure, resulting in inaccurate detection results. Some detection devices have a slow response to low - concentration ozone and are difficult to meet the requirements of high - precision detection. After long - term operation, the performance of the detection device may decline, and it needs to be calibrated and maintained frequently. Traditional detection devices lack automatic calibration and compensation functions and cannot correct detection results in real time, affecting the reliability and stability of detection. Summary of the Invention

[0004] In view of this, the present invention provides a dual - optical - path ozone detection device based on sapphire, which can reduce the interference of the external environment and make the detection structure more accurate.

[0005] The present invention is implemented as follows:

[0006] In a first aspect of the present invention, there is provided a dual - optical - path ozone detection device based on sapphire, which includes a measurement chamber. The measurement chamber is in the shape of a rectangular box and is used to place the liquid to be measured inside. A transition chamber is provided on the rear side wall of the measurement chamber. The transition chamber is located in the center of the rear side wall of the measurement chamber. At both ends of the transition chamber on the rear side wall of the measurement chamber, there are also respectively an ultraviolet lamp chamber and a filter chamber. The light - emitting hole of the ultraviolet lamp chamber faces the transition chamber and is used to emit ultraviolet light. An ultraviolet spectroscope is provided inside the transition chamber. The ultraviolet spectroscope is used to split the light emitted from the transition chamber. The reflected light of the ultraviolet spectroscope faces the direction of the measurement chamber, and the transmitted light of the ultraviolet spectroscope faces the direction of the filter chamber. A first ultraviolet detector is provided on one side of the filter chamber and is used to detect the transmitted ultraviolet light emitted from the ultraviolet lamp chamber. A second ultraviolet detector is also provided on the front side of the measurement chamber and is used to detect the ultraviolet light reflected by the ultraviolet spectroscope.

[0007] On the basis of the above technical solution, a sapphire-based dual optical path ozone detection device of the present invention can also be improved as follows:

[0008] Among them, the first ultraviolet detector is located on the side of the filter chamber away from the ultraviolet lamp chamber..

[0009] Furthermore, the first ultraviolet detector and the second ultraviolet detector in the filter chamber are photodiodes.

[0010] Furthermore, an ultraviolet spectroscope, a gasket, a first sapphire lens, a measurement cavity gasket, a second sapphire lens, and a gasket are respectively arranged on the transition chamber from the rear side to the outside.

[0011] Furthermore, the ultraviolet spectroscope is embedded inside the transition chamber.

[0012] Furthermore, the included angle between the ultraviolet spectroscope and the light emitted from the transition chamber is 45°.

[0013] Furthermore, an ultraviolet light source is arranged in the ultraviolet lamp chamber, and the ultraviolet light source is a cold cathode mercury lamp.

[0014] Furthermore, a thermostatic plate is arranged on the outside of the ultraviolet lamp chamber, and a temperature measuring plate is arranged behind the second ultraviolet detector for measuring the temperature inside the measurement cavity.

[0015] The beneficial effect of adopting the above improvement scheme is that by setting the thermostatic plate, the temperature of the ultraviolet lamp chamber is ensured to be constant, and thus the cold cathode mercury lamp inside the ultraviolet lamp chamber

[0016] Furthermore, the top of the measurement cavity is fixedly connected with a main board and an ultraviolet power supply board. The ultraviolet power supply board is used to supply power to the ultraviolet lamp chamber, and the main board is used to process the signals detected by the first ultraviolet detector and the second ultraviolet detector.

[0017] Furthermore, the material of the measurement cavity is PFA or PTFE.

[0018] Furthermore, the device housing is made of engineering aluminum material.

[0019] Compared with the prior art, the beneficial effect of a sapphire-based dual optical path ozone detection device provided by the present invention is:

[0020] 1. Beneficial effects of the technical solutions related to the measurement cavity

[0021] 1. Beneficial effects of material selection: In the prior art, the material of the measurement chamber is vulnerable to hydrofluoric acid corrosion, resulting in damage to the measurement chamber and deviation of the detection results. In the present invention, PFA or PTFE is selected as the material of the measurement chamber. Since these two materials have extremely strong chemical stability and do not react with hydrofluoric acid and ozone. Therefore, the problem of material corrosion is fundamentally avoided, and the structure of the measurement chamber can be maintained stable for a long time. This stability ensures that ozone and the detection optical path are always in a stable interaction environment, thereby improving the accuracy and reliability of the ozone concentration detection results. At the same time, the measurement chamber does not need to be replaced frequently, reducing the maintenance cost and downtime, and lowering the overall usage cost of the instrument.

[0022] 2. Beneficial effects of structural design: In the prior art, there may be a situation where the solution flows unevenly in the measurement chamber and stagnant bubbles are generated, resulting in detection errors. The cylindrical structure of the measurement chamber and the setting of the inlet and outlet being misaligned in the present invention ensure that the acidic solution can flow through the measurement chamber evenly and stably. This design avoids the formation of eddies, bubbles or local concentration unevenness of the solution in the chamber, enabling ozone to fully and evenly contact the detection optical path in the measurement chamber. Compared with the detection errors that may be caused by uneven solution flow in the prior art, the present invention can measure the ozone concentration more accurately, improving the detection accuracy and reliability. In addition, the reasonable design of the cavity structure also facilitates the inflow and outflow of the solution, making the use of the instrument more convenient.

[0023] 3. Beneficial effects of light source design: In the prior art, the luminous intensity of a cold cathode mercury lamp is extremely vulnerable to the influence of the external temperature. Low temperature situation: When the ambient temperature is low, the mercury vapor pressure in the mercury lamp is low, the number of mercury atoms in the excited state is small, and the number of mercury atoms participating in luminescence is not much, resulting in a decrease in luminous efficiency, a reduction in light output, and a significant decrease in the brightness of the lamp. For example, when using a mercury lamp in a cold outdoor environment, it may take a long time to reach the normal brightness after startup.

[0024] High temperature situation: When the temperature is too high, the mercury vapor pressure in the mercury lamp is too high, which will cause an increase in the collision frequency between electrons and mercury atoms, resulting in more energy being consumed in a non-radiative form, also reducing the luminous efficiency. Moreover, too high a temperature may also cause changes in the physical and chemical properties of the filling gas or other materials in the mercury lamp, further affecting the luminous efficiency.

[0025] In the ingenious light source design system of the present invention, a key component, namely a constant-temperature heating plate, is particularly introduced. This constant-temperature heating plate shoulders a crucial mission. It can accurately control and ensure that the temperature of the glass shell of the ultraviolet lamp is constantly maintained at 40°C. From the general laws of light source characteristics, for common cold cathode low-pressure mercury lamps, when the temperature of the glass shell is in a specific range around 40°C, the maximum output of light intensity can be achieved, and under this temperature condition, the light intensity value can remain relatively stable. This innovative design of the present invention is like building a stable "temperature environment fortress" for the light source, successfully avoiding many adverse effects that the temperature factor may have on the light source. Whether it is the fluctuation of the external environmental temperature or the heat interference generated during the operation of the device itself, it cannot pose a threat to the stability of the light source, thus making the light source intensity always stable and reliable. In contrast, in the prior art, due to the failure to effectively solve the problem of light source stability, the instability of the light source is extremely likely to cause measurement errors in application scenarios such as ozone detection. These errors not only affect the accuracy of the detection results but may also mislead subsequent data analysis, decision-making and other links. With its unique light source design, especially the ingenious use of the constant-temperature heating plate, the present invention can better solve such problems caused by light source instability, providing more accurate and reliable technical support for the detection work in related fields.

[0026] II. Beneficial effects of related technical solutions of the light guiding part

[0027] 1. Beneficial effects of material selection: In the prior art, the light guiding material may have a decline in performance in an acidic environment, affecting the light signal transmission and detection accuracy. The present invention uses sapphire as the light guiding material. Sapphire has high hardness, high light transmittance and good chemical stability. In an acidic environment containing hydrofluoric acid, sapphire can stably conduct ultraviolet light, reducing the loss and scattering of light during transmission. Due to the improvement of the light signal transmission efficiency and quality, the photodetector can receive a more accurate light signal, thus greatly improving the sensitivity and accuracy of ozone concentration detection. Moreover, the corrosion resistance of sapphire extends the service life of the light guiding part, reducing the maintenance frequency and cost.

[0028] 2. Beneficial effects of the optical path design: In the prior art, single optical path detection is mostly adopted, which is vulnerable to external factors such as light source fluctuations and environmental temperature changes, resulting in unstable detection results. The present invention adopts a dual optical path detection technology, and a measurement optical path and a reference optical path are set up. The measurement optical path is used to measure the absorbance of the acidic solution containing ozone, and the reference optical path is used to measure the absorbance of the blank solution without ozone. By comparing the absorbance difference between the two optical paths to calculate the ozone concentration, the influence of external factors on the detection results can be monitored and compensated in real time. Because this design effectively eliminates interference factors such as light source fluctuations, the stability and reliability of the detection results are greatly improved. At the same time, the setting of the optical path adjustment and calibration mechanism further ensures the accuracy of the optical path, ensuring that the instrument maintains high-precision detection performance during long-term use.

[0029] III. Beneficial effects of the technical solutions related to the light source and the detection system

[0030] 1. Beneficial effects in terms of the light source: In the prior art, the instability of the light source may cause changes in the ozone absorption spectrum, affecting the accuracy of the detection results. The present invention selects a cold cathode mercury lamp with a specific wavelength as the ultraviolet light source and is equipped with an inverter drive power supply. The inverter drive power supply can convert the DC power supply into a high-frequency AC power supply, providing the high voltage and frequency required for the cold cathode mercury lamp, ensuring the stability of the luminous intensity and wavelength of the ultraviolet lamp. Since the stable light source provides a reliable optical signal basis for ozone concentration detection, the absorption of ultraviolet light by ozone can accurately reflect its concentration, thereby improving the accuracy and repeatability of the detection results.

[0031] 2. Beneficial effects in terms of the detection system: The detection system in the prior art may have problems such as insufficient signal processing ability and low detection accuracy. The detection system of the present invention adopts a high-sensitivity ultraviolet detector, namely a photodiode, and a perfect signal processing circuit, including a preamplifier, a filter circuit, and an analog-to-digital converter, etc. The ultraviolet detector, namely the photodiode, can quickly respond to the change of the optical signal and convert the optical signal into an electrical signal. The preamplifier amplifies the weak electrical signal, the filter circuit removes noise interference, and the analog-to-digital converter converts the analog signal into a digital signal. The microprocessor processes the digital signal according to the preset algorithm, calculates the ozone concentration, and has an automatic calibration and compensation function. Since all links of the detection system work together, it can quickly and accurately detect and process the optical signal, correct the detection results in real time, and eliminate the influence of external factors. Therefore, compared with the prior art, the detection system of the present invention can provide more accurate and stable ozone concentration detection results, improving the detection performance and the intelligent level of the instrument.

[0032] IV. Beneficial effects of the technical solutions related to the overall structure and the protection design

[0033] 1. Beneficial effects of the overall layout: In the prior art, the instrument structure may be complex, which is not conducive to installation, debugging, and maintenance. The present invention adopts a modular overall structure design, and the instrument is mainly divided into a measurement chamber module, a light source module, an optical path module, a detection system module, and a housing module. Each module is relatively independent and is connected by screws and wiring harnesses. This modular design makes the installation process of the instrument more convenient, enables quick positioning and problem-solving during debugging, and also facilitates the disassembly and replacement of each module during maintenance. Therefore, the maintenance difficulty and cost are reduced, the production efficiency and quality are improved, and the instrument is more convenient to use.

[0034] 2. Beneficial effects of the housing protection: In the prior art, the instrument may not be able to effectively resist acidic solutions and external interference, affecting the service life and reliability of the instrument. The instrument housing of the present invention is made of corrosion-resistant engineering aluminum. This design of the housing effectively prevents acidic solutions from splashing into the instrument interior and protects the internal electronic components from corrosion. At the same time, the shielding material can shield external electromagnetic interference, ensuring the normal operation of the internal electronic components. Since the instrument is well protected, it can better adapt to the working conditions in a harsh acidic solution environment, ensuring the accuracy and continuity of detection, extending the service life of the instrument, and having better environmental adaptability and durability compared to the prior art.

[0035] In summary, through a series of innovative technical solutions, the acidic solution ozone analyzer of the present invention has successfully solved the defects and deficiencies of the prior art, and has achieved remarkable beneficial technical effects in terms of detection accuracy, stability, service life, use convenience, and maintenance cost, and has broad application prospects and high practical value. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of a dual-light-path ozone detection device based on sapphire;

[0037] Figure 2 It is an exploded view of a dual-light-path ozone detection device based on sapphire;

[0038] Figure 3 It is a rear schematic view of a dual-light-path ozone detection device based on sapphire;

[0039] Figure 4 It is a cross-sectional view of a dual-light-path ozone detection device based on sapphire;

[0040] Figure 5 It is a rear schematic view of a dual-light-path ozone detection device based on sapphire;

[0041] Figure 6 It is a front schematic view of a dual-light-path ozone detection device based on sapphire;

[0042] In the accompanying drawings, the list of components represented by each label is as follows:

[0043] 1. Measurement chamber; 2. Transition chamber; 21. Ultraviolet spectroscope; 3. Ultraviolet lamp chamber; 31. Ultraviolet mercury lamp power supply; 4. Filter chamber; 41. First ultraviolet detector; 5. Second ultraviolet detector. Specific embodiments

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0045] As Figures 1-6 shown, it is the first embodiment of a dual - optical - path ozone detection device based on sapphire provided by the present invention. In this embodiment, it includes a measurement chamber 1. The measurement chamber 1 is in the shape of a rectangular parallelepiped box and is used to place the liquid to be measured inside. A transition chamber 2 is provided on the rear side wall of the measurement chamber 1. The transition chamber 2 is located at the center of the rear side wall of the measurement chamber 1. An ultraviolet lamp chamber 3 and a filter chamber 4 are respectively provided at both ends of the transition chamber 2 on the rear side wall of the measurement chamber 1. The light - emitting hole of the ultraviolet lamp chamber 3 faces the transition chamber 2 and is used to emit ultraviolet light. An ultraviolet spectroscope 21 is provided inside the transition chamber 2. The ultraviolet spectroscope 21 is used to split the light emitted from the transition chamber 2. The reflected light of the ultraviolet spectroscope 21 faces the direction of the measurement chamber 1, and the transmitted light of the ultraviolet spectroscope 21 faces the direction of the filter chamber 4. A first ultraviolet detector 41 is provided on one side of the filter chamber 4 and is used to detect the ultraviolet light transmitted by the ultraviolet spectroscope 21 and emitted from the ultraviolet lamp chamber 3. A second ultraviolet detector 5 is also provided on the front side of the measurement chamber 1 and is used to detect the ultraviolet light reflected by the ultraviolet spectroscope 21.

[0046] Among them, in the above - mentioned technical solution, the first ultraviolet detector 41 is located on the side of the filter chamber 4 away from the ultraviolet lamp chamber 3.

[0047] Furthermore, both the first ultraviolet detector 41 and the second ultraviolet detector 5 are photodiodes.

[0048] Furthermore, in the above - mentioned technical solution, from the rear side to the outside, the transition chamber 2 is provided with an ultraviolet spectroscope 21, a gasket, a first sapphire lens, a measurement chamber gasket, a second sapphire lens, and a gasket.

[0049] Furthermore, in the above - mentioned technical solution, the ultraviolet spectroscope 21 is embedded inside the transition chamber 2.

[0050] Furthermore, in the above - mentioned technical solution, the included angle between the ultraviolet spectroscope 21 and the light emitted from the transition chamber 2 is 45°.

[0051] Furthermore, in the above - mentioned technical solution, an ultraviolet light source is provided inside the ultraviolet lamp chamber 3, and the ultraviolet light source is a cold - cathode mercury lamp.

[0052] Further, in the above technical solution, a thermostatic plate is provided outside the ultraviolet lamp chamber 3, and a temperature measuring plate is provided behind the second ultraviolet detector 5 for measuring the temperature inside the measurement chamber 1.

[0053] Further, in the above technical solution, a main board and an ultraviolet power supply board are fixedly connected to the top of the measurement chamber 1. The ultraviolet power supply board is used to supply power to the ultraviolet lamp chamber 3, and the main board is used to process the signals detected by the first ultraviolet detector 41 and the second ultraviolet detector 5.

[0054] Further, in the above technical solution, the material of the measurement chamber 1 is PFA or PTFE.

[0055] Further, the device housing is made of engineering aluminum material.

[0056] The following is a specific embodiment of the present invention. In this embodiment, the structure of the detection core part is mainly composed of an ultraviolet mercury lamp, an ultraviolet spectroscope, an ultraviolet detector, a chamber, and related auxiliary parts. The ultraviolet mercury lamp is embedded in the lamp chamber, and a heating plate is connected to the outside of the lamp chamber. The whole is fixed to one side of the measurement chamber with screws;

[0057] The light port of the lamp chamber faces the transition chamber. The ultraviolet spectroscope is embedded in the transition chamber, and seals, PTFE gaskets, seals, sapphire lenses, measurement chamber gaskets, sapphire lenses, seals, and PTFE gaskets are superimposed inside. The whole is fixed to the position of the measurement chamber water tank with screws; on the other side of the transition chamber is the filter chamber, and the ultraviolet detector is embedded in the filter chamber; an ultraviolet detector is embedded in the position of the measurement chamber opposite to the transition chamber, and a temperature measuring plate is beside it. Above the detection chamber is a fixing plate, and the main board and the ultraviolet power supply board are fixed to both sides of the fixing plate with screws and nuts respectively. A wiring interface is inlaid on the board and connected to the corresponding signal end.

[0058] The measurement chamber is made of PFA or PTFE material that does not react with hydrofluoric acid and ozone, fundamentally preventing the corrosion of the measurement chamber by hydrofluoric acid and ensuring the accuracy of detection. The measurement chamber water tank is designed as a cylindrical structure, and the entrances and exits adopt a high-low staggered layout to ensure that the acidic solution flows through the measurement chamber evenly and stably. This design enables ozone to fully and evenly contact the detection optical path, thereby improving the detection accuracy.

[0059] The light guiding part uses sapphire as the light guiding material. Utilizing its high hardness, high light transmittance, and good chemical stability, it can stably conduct ultraviolet light in an acidic environment, reduce light transmission loss and scattering, and improve the detection sensitivity and accuracy. The double optical path detection technology is adopted. By setting a measurement optical path and a reference optical path, the ozone concentration is calculated by comparing the absorbance difference, effectively compensating for the interference of external factors and enhancing the stability and reliability of the detection result. In addition, an optical path adjustment and calibration mechanism is equipped to further ensure the accuracy of the optical path.

[0060] A cold cathode mercury lamp with a specific wavelength is selected as the ultraviolet light source, and it is paired with a power supply circuit driven by a constant current source to ensure the stability of the light emission intensity and wavelength of the light source, providing a reliable optical signal basis for accurate detection. The detection system uses a high-sensitivity photodiode, combined with a complete signal processing circuit (including a preamplifier, a filter circuit, and an analog-to-digital converter, etc.), and a microprocessor with automatic calibration and compensation functions to achieve fast and accurate detection and processing of optical signals. The microprocessor can correct the detection results in real time, eliminate the influence of external factors, thereby improving the detection performance and intelligence level.

[0061] A modular overall structure design is adopted, and the instrument is divided into modules such as a measurement chamber, a light source, an optical path, a detection system, and a housing. Each module is relatively independent, facilitating installation, debugging, and maintenance, reducing the maintenance difficulty and cost, and improving the production efficiency and quality. The housing is made of corrosion-resistant engineering aluminum, effectively preventing acidic solution splashing and external electromagnetic interference, protecting the internal electronic components, and extending the service life of the instrument. This design enhances the environmental adaptability and durability of the instrument.

[0062] Through the above design, the ozone detection system of the present invention can achieve high-precision and high-stability ozone concentration detection. The material and structure design of the measurement chamber effectively prevent the corrosion of hydrofluoric acid. The material of the light guiding part and the optical path design improve the light transmission efficiency and detection sensitivity. The light source and the detection system ensure the stability of the optical signal and the accuracy of detection. The overall structure and the protection design enhance the durability and maintenance convenience of the instrument. The present invention is applicable to fields such as environmental monitoring, industrial safety, and scientific research, and has a wide application prospect.

[0063] Specifically, the principle of the present invention is: an ultraviolet lamp is used as the light source, and a double optical path detection technology is selected. At the same time, materials that do not react with hydrofluoric acid and ozone (such as PFA or PTFE) are selected for the measurement chamber (sapphire is selected for the light guiding part) to eliminate the influence of hydrofluoric acid on ozone concentration detection. The ultraviolet absorption principle is as follows: Ozone molecules have a unique absorption spectrum and have the strongest absorption ability for ultraviolet light with a wavelength of 254 nm (hydrofluoric acid does not absorb this part of the wavelength). When ultraviolet light passes through a water sample containing ozone, ozone molecules will absorb the ultraviolet light, resulting in a gradual weakening of the light intensity along the passing path. The degree of this light intensity weakening is proportional to the ozone concentration in the water sample.

[0064] The ultraviolet lamp provides a stable optical signal for the instrument. After passing through the ultraviolet spectroscope, the optical signal is divided into two paths of light. One path of light is the reference optical path, which reaches the ultraviolet detector after passing through the filter chamber; the other path of light is the measurement optical path, which reaches the ultraviolet detector after passing through the measurement chamber. The measurement chamber contains flowing acidic ozone water, which will absorb ultraviolet light of a specific wavelength. Therefore, the signal of the measurement optical path will be linearly weakened correspondingly due to different ozone concentrations. The two ultraviolet detectors are connected to the probe board, which can convert the optical signal into an electrical signal and then convert the electrical signal into a digital signal. Then, the main control board processes the digital signal transmitted from the probe board, automatically compensates for the temperature and pressure, converts the digital signal into an ozone concentration value and displays it, and outputs a standard 0-5V voltage signal and a 485 signal. Thus, the measurement of the ozone concentration in the acidic solution is completed.

[0065] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention.

Claims

1. A dual-optical path ozone detection device based on sapphire, characterized in that: The measuring chamber (1) comprises a measuring chamber (1), the measuring chamber (1) is in the shape of a rectangular box, and is used to place a liquid to be measured inside. A transition chamber (2) is arranged on the rear side wall of the measuring chamber (1), and the transition chamber (2) is located at the center of the rear side wall of the measuring chamber (1). An ultraviolet lamp chamber (3) and a filter chamber (4) are also arranged at both ends of the transition chamber (2) on the rear side wall of the measuring chamber (1), respectively. The light outlet of the ultraviolet lamp chamber (3) faces the transition chamber (2) and is used to emit ultraviolet light. An ultraviolet spectroscope (21) is arranged inside the transition chamber (2), and the ultraviolet spectroscope (21) is arranged inside the transition chamber (2). (21) is used to split the light emitted by the transition chamber (2), the reflected light of the ultraviolet spectroscope (21) is directed toward the direction of the measuring chamber (1), and the transmitted light of the ultraviolet spectroscope (21) is directed toward the direction of the filter chamber (4), and the side wall of the filter chamber (4) is provided with a first ultraviolet detector (41) for detecting the transmitted ultraviolet light emitted by the ultraviolet lamp chamber (3), and the front side of the measuring chamber (1) is also provided with a second ultraviolet detector (5) for detecting the reflected ultraviolet light emitted by the ultraviolet spectroscope (21).

2. A sapphire-based dual-light path ozone detection device according to claim 1, characterized in that: The first ultraviolet detector (41) is located on a side of the filter chamber (4) away from the ultraviolet lamp chamber (3).

3. A sapphire-based dual-light path ozone detection device according to claim 2, characterized in that: The transition chamber (2) is provided with an ultraviolet spectroscope (21), a gasket, a first sapphire lens, a measuring cavity gasket, a second sapphire lens, and a gasket from the rear side to the outside.

4. A sapphire-based dual-light path ozone detection device according to claim 3, characterized in that: The ultraviolet spectroscope (21) is embedded in the transition chamber (2).

5. A sapphire-based dual-light-path ozone detection device according to claim 4, characterized in that: The angle between the ultraviolet spectroscope (21) and the light emitted by the transition chamber (2) is 45°.

6. A sapphire-based dual-light path ozone detection device according to claim 5, characterized in that: An ultraviolet light source is arranged in the ultraviolet lamp chamber (3), and the ultraviolet light source is a cold cathode mercury lamp.

7. A sapphire-based dual-light-path ozone detection device according to claim 6, characterized in that: A constant temperature plate is provided on the outside of the ultraviolet lamp chamber (3), and a temperature measuring plate is provided on the rear side of the second ultraviolet detector (5), for measuring the temperature inside the measuring cavity (1).

8. A sapphire-based dual-light-path ozone detection device according to claim 7, characterized in that: A main board and an ultraviolet power board are fixedly connected to the top of the measuring cavity (1), the ultraviolet power board is used to supply power to the ultraviolet lamp chamber (3), and the main board is used to process signals detected by the first ultraviolet detector (41) and the second ultraviolet detector (5).

9. A sapphire-based dual-light-path ozone detection device according to claim 8, characterized in that: The material of the measuring chamber (1) is PFA or PTFE.

10. The sapphire-based dual-light path ozone detection device according to claim 8, characterized in that: The device housing is made of engineering aluminum.

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