In-situ testing device for ultraviolet visible light wave band
By designing an in-situ testing device with a sealed cuvette and a heat-insulating structure, the problem of easy evaporation and decomposition of liquid samples under high temperature conditions in traditional UV-Vis spectrophotometers has been solved, achieving efficient and accurate optical testing.
Patent Information
- Application Number
- CN202520250853.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-17
AI Technical Summary
Traditional UV-Vis spectrophotometers have limited heat resistance in their sample cells, making liquid samples prone to evaporation and decomposition at high temperatures. Furthermore, the poor integration of the heating system with the spectrophotometer affects measurement accuracy and stability.
An in-situ testing device was designed, comprising a vessel body, a cuvette, a heat insulation plate, and a fluorescence optical path. By sealing the cuvette, the heat insulation plate, and the support column, the vessel body is isolated from the bottom plate to ensure that the optical path is not affected by thermal radiation. The fluorescence optical path is also set perpendicular to the observation port to avoid signal obstruction.
This method achieves stability and optical transmittance of liquid samples under high-temperature conditions, improves measurement accuracy and repeatability, and reduces the impact of thermal radiation on the optical path.
Smart Images
Figure CN223727685U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to in situ testing device technical field, specifically relate to a kind of in situ testing device for ultraviolet visible light wave band. BACKGROUND
[0002] UV-Vis spectrophotometer is a commonly used analytical instrument, by measuring the absorption or transmittance of a specific wavelength of light, to study the optical properties and molecular structure of matter. In the high temperature study of liquid samples, this technology has important application potential, especially in the fields of catalytic reactions, high temperature phase transition, material performance characterization and in-situ monitoring of complex chemical systems. High temperature environment research of liquid faces many challenges, including the thermal stability of sample container, the adaptability of instrument and the signal interference of optical system, so the high temperature liquid research around UV-Vis spectrophotometer needs to fully understand its technical background and related solutions. The basic working principle of UV-Vis spectrophotometer is that the light source emits broadband light, after selecting the monochromatic light of the target wavelength through the light splitting device, it is irradiated to the liquid sample to be measured through the sample cell, and finally the signal is received by the detector. After the sample absorbs light of a certain wavelength, the decrease of light intensity has a certain relationship with the sample concentration or substance composition, which is described by the Lambert-Beer law. In high temperature liquid research, this principle is still applicable, but the increase of temperature will significantly affect the physical and chemical properties of liquid, including the shift of absorption band, the change of absorbance and the interaction between molecules. In addition, under high temperature conditions, evaporation, thermal decomposition or reaction rate of liquid sample may require higher accuracy and repeatability of measurement.
[0003] The sample cell of traditional UV-Vis spectrophotometer is usually made of quartz or optical glass, with limited heat resistance, which is difficult to meet the requirements of high temperature environment, resulting in the limitation of high temperature liquid research. Secondly, the integration of heating system and spectrophotometer is poor, and the common external heating device may interfere with the optical system, and the influence of thermal radiation is easy to introduce background noise, thereby reducing the accuracy and stability of measurement. In addition, liquid sample under high temperature environment is easy to evaporate, decompose or react, and existing technology lacks effective sealing and protection measures, which cannot guarantee the controllability of experimental conditions and the repeatability of experimental results. UTILITY MODEL CONTENT
[0004] The technical problem to be solved by the utility model is how to realize efficient and accurate in-situ testing of UV-Vis absorption under high temperature conditions.
[0005] To solve the above technical problems, the utility model provides the following technical scheme:
[0006] An in-situ testing device for ultraviolet-visible light band, comprising a base plate, an outer shell, an upper cover, a kettle body, heating rods, a cuvette, a temperature measuring element, a heat insulation plate and support columns, the outer shell is internally hollow and arranged on the base plate, the upper cover is arranged on the top of the outer shell, the heat insulation plate is arranged on the base plate, the kettle body is arranged in the inner shell of the outer shell through the support columns penetrating the heat insulation plate, the heating rods are inserted into the kettle body, the cuvette is sealingly arranged in the inner cavity of the kettle body, and the temperature measuring element is arranged on the outer shell and extends into the kettle body and is arranged towards the cuvette.
[0007] The outer shell and the kettle body are provided with a fluorescence light path on the same side, and are provided with a fluorescence observation port on the same other side, and the incidence direction of the fluorescence light path is perpendicular to the observation direction of the fluorescence observation port.
[0008] The in-situ testing device is sealingly arranged in the inner cavity of the kettle body through the cuvette, so that the gas and the like in the cuvette is still maintained in the cuvette during the heating of the liquid in the cuvette, and is not easily volatilized to affect the optical testing, and the optical transmittance and mechanical stability in the high-temperature environment are maintained; the kettle body is separated from the base plate through the heat insulation plate and the support columns, direct contact between the two is avoided, the heat conduction efficiency is reduced, the heat loss during the working of the kettle body is reduced, and the influence of heat radiation on the light path is greatly reduced; in addition, the incidence direction of the fluorescence light path is perpendicular to the observation direction of the fluorescence observation port, so that the fluorescence signal is not blocked, and efficient and accurate in-situ testing of ultraviolet-visible light absorption under high-temperature conditions is realized.
[0009] Preferably, a heat insulation layer is further arranged between the outer wall of the kettle body and the inner wall of the outer shell.
[0010] Preferably, the temperature measuring element is threadedly connected with the outer shell.
[0011] Preferably, the temperature measuring element is arranged close to the center of the cuvette.
[0012] Preferably, the window diameter of the fluorescence light path is 25mm.
[0013] Preferably, the fluorescence observation port is in a horn shape, and the inner port diameter of the fluorescence observation port is smaller than the outer port diameter.
[0014] Preferably, a sealing cover is arranged on the upper part of the cuvette.
[0015] Preferably, an adapter plate is further arranged, and the base plate is arranged on the adapter plate.
[0016] Compared with the prior art, the in-situ testing device has the following beneficial effects:
[0017] The in-situ testing device is sealed in the inner cavity of the kettle body through the cuvette, so that the gas and the like in the cuvette is not easily volatilized during heating of the liquid in the cuvette, and the optical testing is not affected, the optical transmission performance and the mechanical stability in the high-temperature environment are maintained, the kettle body and the bottom plate are separated through the setting of the heat insulation plate and the supporting column, direct contact between the kettle body and the bottom plate is avoided, the heat conduction efficiency is reduced, heat loss of the kettle body during working is reduced, and the influence of heat radiation on the light path is greatly reduced; in addition, the incident direction of the fluorescence light path is perpendicular to the observation direction of the fluorescence observation port, so that the fluorescence signal is not blocked, and efficient and accurate in-situ testing of ultraviolet-visible light absorption under high-temperature conditions is realized. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is a structure schematic view of an embodiment of the present application;
[0019] Fig. 2 It is a sectional view of an embodiment of the present application;
[0020] Fig. 3 It is another sectional view of an embodiment of the present application. DETAILED DESCRIPTION
[0021] In order to facilitate those skilled in the art to understand the technical scheme of the present application, the technical scheme of the present application will be further described in conjunction with the drawings of the specification.
[0022] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected, or can be communicated; can be directly connected, or can be indirectly connected through an intermediate medium; can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the present application can be understood according to the specific circumstances.
[0023] In the present application, unless otherwise explicitly specified and limited, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.
[0024] Reference Figs. 1 to 3 The embodiment discloses an in-situ testing device for an ultraviolet-visible light wave band, which comprises an adapter plate 1, a bottom plate 2, an outer shell 3, an upper cover 4, a kettle body 5, a heating rod 6, a cuvette 7 and a temperature measuring element 8.
[0025] The adapter plate 1 is provided with the bottom plate 2, the hollow shell 3 is arranged on the bottom plate 2, the upper cover 4 is arranged on the top of the shell 3, the water cooling structure 401 is arranged on the upper cover 4, and the water cooling circulation of the test device is realized through the water cooling structure 401, so that the heat radiation effect of the whole device is further reduced, and the influence on the light path is reduced.
[0026] The kettle body 5 is sealingly arranged in the shell 3. Specifically, the bottom plate 2 is further provided with a heat insulation plate 9, and the kettle body 5 is fixed on the bottom plate 2 through three supporting columns 10 penetrating through the heat insulation plate 9. The supporting columns 10 separate the kettle body 5 from the bottom plate 2, avoiding direct contact between the two, reducing the heat conduction efficiency. Meanwhile, a heat insulation layer (not shown in the figure) is arranged between the outer wall of the kettle body 5 and the inner wall of the shell 3. The heat insulation material of the heat insulation layer includes but is not limited to various porous materials and insulating materials. The heat insulation material can be wrapped around the outside of the kettle body 5 layer by layer, reducing the heat loss of the kettle body 5 during work, and ensuring that the surface temperature of the device during work will not be too high. Further, installing a heat shielding component outside the kettle body 5 will greatly reduce the influence of heat radiation on the light path.
[0027] The plurality of heating rods 6 are inserted into the kettle body 5. In this embodiment, four heating rods 6 are inserted into the kettle body 5 along the four corner end directions of the kettle body 5, so that the kettle body 5 and the heating rods 6 are designed to be heated integrally. In addition, the material of the kettle body 5 needs to meet the requirements of good thermal conductivity and good corrosion resistance, including but not limited to various stainless steel materials or hastelloy materials.
[0028] The cuvette 7 is sealingly arranged in the inner cavity of the kettle body 5, and a sealing cover is arranged on the upper portion of the cuvette 7. During the heating process of the liquid in the cuvette 7, the gas and the like still remain in the cuvette 7, and will not easily evaporate to affect the optical test. The cuvette 7 is the main carrier for liquid reaction, and needs to meet the requirements of good optical transmittance and mechanical stability in a high-temperature environment. The material selection of the cuvette 7 is different from that under normal temperature conditions, including but not limited to high-purity quartz, sapphire or ceramic, etc.
[0029] The temperature measuring element 8 is arranged on the shell 3 and extends into the kettle body 5 and is arranged towards the center direction of the cuvette 7, so as to realize accurate temperature control of the whole sample cavity. Specifically, the temperature measuring element 8 is threadedly connected with the shell 3.
[0030] The shell 3 and the kettle body 5 are provided with a fluorescence light path 301 on the same side, and are provided with a fluorescence observation port 302 on the same other side, the incidence direction of the fluorescence light path 301 is perpendicular to the observation direction of the fluorescence observation port 302, the fluorescence signal is not blocked, and the window diameter of the fluorescence light path 301 is 25mm. The fluorescence observation port 302 is trumpet-shaped, the inner diameter of the fluorescence observation port is smaller than the outer diameter, and the angle of the fluorescence observation port 302 is 32°. Further, the two window materials need to meet the good optical transmission performance and mechanical stability in the high temperature environment, and the material selection is different from that under the normal temperature condition, including but not limited to high-purity quartz, sapphire or ceramic and the like.
[0031] The working principle of the embodiment is that: first, the cuvette 7 is filled with sample solution, then four countersunk screws fixing the upper cover 4 are unscrewed, the upper cover 4 is removed, the cuvette 7 filled with sample solution is placed in the kettle body 7, then the upper cover 4 is covered and the four countersunk screws are tightened, then the temperature measuring element 8 is fixed through the threaded hole on the side of the shell 3, and the sample installation is completed. After the sample assembly is completed, the device is fixed on the test platform through the adapter plate 1, the fluorescence light path 301 is aligned with the light path, the heating rod 6 and the water cooling structure 401 are connected, finally the temperature control box and the water cooling machine are started, and when the measured temperature reaches the target temperature, the data can be collected through the molecular fluorescence spectrophotometer.
[0032] In summary, the in-situ testing device is sealed in the inner cavity of the kettle body 5 through the cuvette 7, so that the gas and the like in the cuvette still remain in the cuvette during the heating of the liquid in the cuvette, and the optical test is not easily affected by the volatilization, and the good optical transmission performance and mechanical stability in the high temperature environment are met; the kettle body 5 is separated from the bottom plate 2 through the setting of the heat insulation plate 9 and the supporting column 10, direct contact between the two is avoided, the heat conduction efficiency is reduced, the heat loss of the kettle body 5 during work is reduced, and the influence of heat radiation on the light path is greatly reduced. In addition, the incidence direction of the fluorescence light path 301 is perpendicular to the observation direction of the fluorescence observation port 302, so that the fluorescence signal is not blocked, and efficient and accurate in-situ testing of ultraviolet-visible light absorption under high temperature conditions is realized.
[0033] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model, and any figure mark in the claims should not be regarded as limiting the involved claims.
[0034] The above-described embodiments only represent the implementation manners of the utility model, and the protection scope of the utility model is not limited to the above-described embodiments, and for those skilled in the art, under the premise of not departing from the concept of the utility model, a plurality of modifications and improvements can be made, and these all belong to the protection scope of the utility model.
Claims
1. An in-situ testing device for the ultraviolet-visible light band, characterized in that: The utility model relates to a kind of double-layered heating type fluorescence measuring device, including bottom plate, shell, upper cover, kettle body, heating rod, cuvette, temperature measuring element, heat insulation plate and support column, the bottom plate is provided with the hollow shell in, the upper cover is covered in shell top, the bottom plate is equipped with heat insulation plate, the kettle body is set in shell interior by multiple support columns passing through heat insulation plate, the kettle body is inserted multiple heating rods, the cuvette is sealed and arranged in the inner chamber of kettle body, the temperature measuring element is arranged on shell and is set in the direction of cuvette towards kettle body and is set in the direction of cuvette towards kettle body; The shell and the kettle body are provided with a fluorescence light path on the same side, and the shell and the kettle body are provided with a fluorescence observation port on the same other side, and the incident direction of the fluorescence light path is perpendicular to the observation direction of the fluorescence observation port.
2. The in-situ testing device for ultraviolet-visible light band according to claim 1, characterized in that: The kettle body outer wall and the shell inner wall are further provided with a heat insulation layer.
3. The in-situ testing device for ultraviolet-visible light band according to claim 1, characterized in that: The temperature measuring element is threadedly connected with the shell.
4. The in-situ testing device for UV-Vis light band according to claim 1, characterized in that: The temperature measuring element is arranged near the center of the cuvette.
5. The in-situ testing device for UV-Vis light band according to claim 1, characterized in that: The window diameter of the fluorescence light path is 25mm.
6. The in-situ testing device for UV-Vis light band according to claim 1, characterized in that: The fluorescence observation port is trumpet-shaped, and the inner diameter of the inner port is smaller than the outer diameter.
7. The in-situ testing device for UV-Vis light band according to claim 1, characterized in that: The upper part of the cuvette is provided with a sealing cover.
8. The in-situ testing device for UV-Vis light band according to claim 1, characterized in that: The bottom plate is arranged on an adapter plate.