WO2022021766A1 - Optical probe - Google Patents
Optical probe Download PDFInfo
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- WO2022021766A1 WO2022021766A1 PCT/CN2020/138472 CN2020138472W WO2022021766A1 WO 2022021766 A1 WO2022021766 A1 WO 2022021766A1 CN 2020138472 W CN2020138472 W CN 2020138472W WO 2022021766 A1 WO2022021766 A1 WO 2022021766A1
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- optical
- window
- annular gasket
- cavity
- probe
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- 230000003287 optical effect Effects 0.000 title claims abstract description 59
- 239000000523 sample Substances 0.000 title claims abstract description 54
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 239000010931 gold Substances 0.000 claims abstract description 13
- 229910052737 gold Inorganic materials 0.000 claims abstract description 13
- 238000005260 corrosion Methods 0.000 claims abstract description 12
- 230000007797 corrosion Effects 0.000 claims abstract description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 230000004308 accommodation Effects 0.000 claims description 5
- 239000013307 optical fiber Substances 0.000 claims description 4
- 229910052594 sapphire Inorganic materials 0.000 claims description 4
- 239000010980 sapphire Substances 0.000 claims description 4
- PFNQVRZLDWYSCW-UHFFFAOYSA-N (fluoren-9-ylideneamino) n-naphthalen-1-ylcarbamate Chemical compound C12=CC=CC=C2C2=CC=CC=C2C1=NOC(=O)NC1=CC=CC2=CC=CC=C12 PFNQVRZLDWYSCW-UHFFFAOYSA-N 0.000 claims description 3
- OYLGJCQECKOTOL-UHFFFAOYSA-L barium fluoride Chemical compound [F-].[F-].[Ba+2] OYLGJCQECKOTOL-UHFFFAOYSA-L 0.000 claims description 3
- 229910001632 barium fluoride Inorganic materials 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 229910001634 calcium fluoride Inorganic materials 0.000 claims description 3
- 229910000856 hastalloy Inorganic materials 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 3
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 description 8
- 125000006850 spacer group Chemical group 0.000 description 8
- 238000001514 detection method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 239000003513 alkali Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005286 illumination Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 238000000862 absorption spectrum Methods 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002189 fluorescence spectrum Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
Definitions
- the utility model relates to the technical field of optical detection, in particular to an optical probe.
- optical sensor detection technology can perform non-destructive measurement, and has the advantages of being less susceptible to interference, high-speed transmission, and telemetry and remote control. Wide range of applications.
- the optical probe is an important part of the optical sensor, which can guide the detection light to the object under test and collect the light signal containing the information of the object under test.
- the optical probe can realize the functions of illumination, imaging, microscopic imaging, spectrum acquisition, etc.
- Existing optical probes can only be used in conventional environments and cannot be used in special environments, such as in a reaction kettle at a high temperature of hundreds of degrees Celsius and a high pressure of tens of megapascals, and in a special climate environment of minus 20 to 30 degrees Celsius. In the reaction kettle with strong corrosive medium such as strong acid and strong alkali, the existing optical probe cannot be used normally and cannot meet the needs of use.
- the technical problem to be solved by the utility model is to provide an optical probe which can be used normally in extreme environments such as high temperature, low temperature, high pressure and strong corrosion.
- An optical probe comprising a probe rod, a window cavity and an accommodation cavity for accommodating an optical component are arranged inside the probe rod, the accommodation cavity is communicated with the window cavity, and the window cavity is provided with a second cavity.
- An annular spacer and a second annular spacer, an optical window is arranged between the first annular spacer and the second annular spacer, and the first annular spacer and the second annular spacer are abutted against the
- the first annular spacer and the second annular spacer both use gold spacers, the hardness of the optical window sheet is greater than the hardness of the gold spacer, and the end of the probe is also connected with a
- a protective tube the window cavity is located inside the protective tube, a through hole is provided on the top of the protective tube, and the through hole is communicated with the window cavity.
- the probe and the protective sleeve are detachably connected.
- the outer wall of the probe rod is provided with an outer thread
- the inner wall of the protective sleeve is provided with an inner thread
- the outer thread and the inner thread are screwed together.
- the optical window is a quartz window, a sapphire window or an infrared window.
- the infrared windows comprise zinc selenide windows, calcium fluoride windows or barium fluoride windows.
- the probe is made of stainless steel or Hastelloy.
- the outer wall of the probe rod is coated with a corrosion-resistant layer.
- the corrosion-resistant layer is a polytetrafluoroethylene layer.
- the optical assembly includes one or more of optical fibers, lenses, and filters.
- the utility model has the following beneficial effects: the optical probe of the present utility model can be applied in extreme environments such as high temperature, low temperature, high pressure, strong corrosion, etc., so that the optical sensor can normally perform illumination, imaging, microscopic imaging, spectroscopy in the extreme environment Acquisition and other functions are convenient for the acquisition of related signals in extreme environments.
- FIG. 1 is a three-dimensional schematic diagram of an optical probe of the present invention
- Fig. 2 is the front view of the optical probe shown in Fig. 1;
- Fig. 3 is the sectional view of A-A direction in Fig. 2;
- protective tube 11, through hole, 2, probe rod, 21, window cavity, 22, accommodating cavity, 3, first annular gasket, 4, second annular gasket, 5, optical window .
- the present embodiment discloses an optical probe, including a probe rod 2, a window cavity 21 and an accommodation cavity 22 for accommodating optical components are provided inside the probe rod 2, and the window cavity 21 is located in the container At the end of the cavity 22, the cavity 22 is communicated with the window cavity 21.
- the window cavity 21 is provided with a first annular gasket 3 and a second annular gasket 4.
- the first annular gasket 3 and the second annular gasket There is an optical window sheet between 4, the first annular gasket 3 and the second annular gasket 4 are abutted on the optical window sheet 5 to achieve compression sealing, the first annular gasket 3 and the second annular gasket 4 All use gold gaskets, the hardness of the optical window 5 is greater than the hardness of the gold gasket, the end of the probe rod 2 is also connected with a protective tube 1, the window cavity 21 is located inside the protective tube 1, and the top of the protective tube 1 is provided with The through hole 11 is communicated with the window cavity 21 to facilitate light transmission.
- the optical window sheet 5 is a light-permeable component, which is not only convenient for optical detection, but also can protect the optical components inside the probe rod 2 .
- the first annular gasket 3 and the second annular gasket 4 are made of gold gaskets, and the gold gaskets are metal gaskets, and their hardness (Mohs hardness) is lower than that of the optical window sheet 5, which is easy to be deformed, so that the optical The window 5 can be completely sealed with the accommodating cavity, effectively ensuring the sealing effect.
- gold is an inert metal, which is difficult to react with other substances, and can withstand corrosive environments such as strong acids and alkalis, and the melting point of gold ( 1064°C) is higher and can withstand high temperature. Therefore, through the setting of the gold gasket, the above optical probe can be used in extreme environments such as high temperature, low temperature, high pressure, and strong corrosion.
- the probe 2 and the protective sleeve 1 are detachably connected.
- a threaded connection can be adopted between the probe rod 2 and the protective cylinder 1: the outer wall of the probe rod 2 is provided with an external thread, the inner wall of the protective cylinder 1 is provided with an internal thread, and the external thread and the internal thread are screwed together.
- the connection method is not only easy to disassemble, but also has high connection reliability.
- the optical window 5 is a quartz window, a sapphire window or an infrared window.
- the sapphire window has good light transmission performance, has hardness and mechanical strength unmatched by tempered glass, is resistant to drops and scratches, and has high optical transparency from vacuum ultraviolet, visible, near-infrared to mid-infrared 5.5 ⁇ m. Pass rate; infrared windows are used when infrared light needs to be transmitted.
- infrared windows can be made of infrared material windows such as zinc selenide windows, calcium fluoride windows or barium fluoride windows, which are not easy to deliquescence and can transmit infrared light well. Rate.
- the probe 2 is made of stainless steel or Hastelloy, which has good corrosion resistance and thermal stability.
- the outer wall of the probe rod 2 is coated with a corrosion-resistant layer.
- the corrosion-resistant layer adopts a polytetrafluoroethylene layer, which has good resistance to strong corrosive environments such as strong acid and strong alkali.
- the optical assembly includes one or more of optical fibers, lenses, and filters.
- functions such as photos and imaging can be realized; by adding a lens group, microscopic imaging functions can be realized; by adding elements such as lenses and filters, Raman can be realized Spectrum acquisition functions such as spectrum, fluorescence spectrum, and near-infrared absorption spectrum.
- the optical probe of this embodiment can be used in extreme environments such as high temperature, low temperature, high pressure, and strong corrosion.
- it can be used in a temperature environment with a temperature of -100°C to 400°C, and can also be used in a pressure below 30MPa.
- a high-pressure environment it can also be used for a long time in a reactor containing strong corrosive media such as strong acid and alkali.
- the optical sensor can normally perform functions such as illumination, imaging, microscopic imaging, and spectrum acquisition in extreme environments, which facilitates the acquisition of relevant signals in extreme environments.
Abstract
An optical probe, comprising a probe rod (2). A window cavity (21) and an accommodating cavity (22) used for accommodating an optical assembly are formed in the probe rod (2). The window cavity (21) is located at the end of the accommodating cavity (22). The accommodating cavity (22) is communicated with the window cavity (21). A first annular gasket (3) and a second annular gasket (4) are provided in the window cavity (21). An optical window sheet (5) is provided between the first annular gasket (3) and the second annular gasket (4). The first annular gasket (3) and the second annular gasket (4) are abutted against the optical window sheet (5) to realize compression sealing. The first annular gasket (3) and the second annular gasket (4) adopt gold gaskets. The hardness of the optical window sheet (5) is greater than that of the gold gasket. A protective cylinder (1) is also connected at the end of the probe rod (2). The window cavity (21) is located inside the protective cylinder (1). A through hole (11) is formed at the top of the protective cylinder (1). The through hole (11) is communicated with the window cavity (21). The optical probe can be applied to an extreme environment such as a high temperature environment, a low temperature environment, a high pressure environment, and a strong corrosion environment for normal data acquisition.
Description
本实用新型涉及光学检测技术领域，具体涉及一种光学探头。The utility model relates to the technical field of optical detection, in particular to an optical probe.
光学传感检测技术作为一种非接触检测技术，能够进行非破坏性测量，具有不易受干扰、高速传输以及可遥测、遥控等优点，鉴于上述优点，光学传感传感器在工业领域得以越来越广泛的应用。光学探头是光学传感器中的重要部件，其能够将检测光引导到被测物体上并收集包含被测物体信息的光信号，光学探头可实现照明、成像、显微成像、光谱采集等功能，但是现有的光学探头仅能适用于常规环境，无法在特殊的环境下使用，例如在几百摄氏度高温、几十兆帕高压下的反应釜中，零下二三十摄氏度的特殊气候环境下，含有强酸、强碱等强腐蚀介质的反应釜中，现有的光学探头无法正常使用，不能满足使用需求。As a non-contact detection technology, optical sensor detection technology can perform non-destructive measurement, and has the advantages of being less susceptible to interference, high-speed transmission, and telemetry and remote control. Wide range of applications. The optical probe is an important part of the optical sensor, which can guide the detection light to the object under test and collect the light signal containing the information of the object under test. The optical probe can realize the functions of illumination, imaging, microscopic imaging, spectrum acquisition, etc. Existing optical probes can only be used in conventional environments and cannot be used in special environments, such as in a reaction kettle at a high temperature of hundreds of degrees Celsius and a high pressure of tens of megapascals, and in a special climate environment of minus 20 to 30 degrees Celsius. In the reaction kettle with strong corrosive medium such as strong acid and strong alkali, the existing optical probe cannot be used normally and cannot meet the needs of use.
实用新型内容Utility model content
本实用新型要解决的技术问题是提供一种光学探头，能够在高温、低温、高压、强腐蚀等极限环境中正常使用。The technical problem to be solved by the utility model is to provide an optical probe which can be used normally in extreme environments such as high temperature, low temperature, high pressure and strong corrosion.
为了解决上述技术问题，本实用新型提供的技术方案如下：In order to solve the above-mentioned technical problems, the technical solutions provided by the present utility model are as follows:
一种光学探头，包括探棒，所述探棒内部设置有窗口腔和用于容纳光学组件的容置腔，所述容置腔和所述窗口腔相连通，所述窗口腔内设置有第一环形垫片和第二环形垫片，所述第一环形垫片和第二环形垫片之间设置有光学窗口片，所述第一环形垫片和第二环形垫片均抵顶在所述光学窗口片上，所述第一环形垫片和第二环形垫片均采用黄金垫片，所述光学窗口片的硬度大于所述黄金垫片的硬度，所述探棒的端部还连接有护筒，所述窗口腔位于所述护筒的内部，护筒顶部设置有通孔，所述通孔和所述窗口腔相连通。An optical probe, comprising a probe rod, a window cavity and an accommodation cavity for accommodating an optical component are arranged inside the probe rod, the accommodation cavity is communicated with the window cavity, and the window cavity is provided with a second cavity. An annular spacer and a second annular spacer, an optical window is arranged between the first annular spacer and the second annular spacer, and the first annular spacer and the second annular spacer are abutted against the On the optical window sheet, the first annular spacer and the second annular spacer both use gold spacers, the hardness of the optical window sheet is greater than the hardness of the gold spacer, and the end of the probe is also connected with a A protective tube, the window cavity is located inside the protective tube, a through hole is provided on the top of the protective tube, and the through hole is communicated with the window cavity.
在其中一个实施方式中，所述探棒和所述护筒采用可拆卸连接。In one of the embodiments, the probe and the protective sleeve are detachably connected.
在其中一个实施方式中，所述探棒外壁上设置有外螺纹，所述护筒内壁上设置有内螺纹，所述外螺纹和内螺纹相旋合。In one embodiment, the outer wall of the probe rod is provided with an outer thread, the inner wall of the protective sleeve is provided with an inner thread, and the outer thread and the inner thread are screwed together.
在其中一个实施方式中，所述光学窗口片采用石英窗片、蓝宝石窗片或红外窗片。In one embodiment, the optical window is a quartz window, a sapphire window or an infrared window.
在其中一个实施方式中，所述红外窗片包括硒化锌窗片、氟化钙窗片或氟化钡窗片。In one embodiment, the infrared windows comprise zinc selenide windows, calcium fluoride windows or barium fluoride windows.
在其中一个实施方式中，所述探棒采用不锈钢件或哈氏合金件。In one of the embodiments, the probe is made of stainless steel or Hastelloy.
在其中一个实施方式中，所述探棒外壁上涂覆有耐腐蚀层。In one of the embodiments, the outer wall of the probe rod is coated with a corrosion-resistant layer.
在其中一个实施方式中，所述耐腐蚀层采用聚四氟乙烯层。In one embodiment, the corrosion-resistant layer is a polytetrafluoroethylene layer.
在其中一个实施方式中，所述光学组件包括光纤、透镜和滤光片中的一种或多种。In one embodiment, the optical assembly includes one or more of optical fibers, lenses, and filters.
本实用新型具有以下有益效果：本实用新型的光学探头，能够应用于高温、低温、高压、强腐蚀等极限环境中，使得光学传感器能够在极限环境中正常进行照明、成像、显微成像、光谱采集等功能，便于在极限环境中进行相关信号的采集。The utility model has the following beneficial effects: the optical probe of the present utility model can be applied in extreme environments such as high temperature, low temperature, high pressure, strong corrosion, etc., so that the optical sensor can normally perform illumination, imaging, microscopic imaging, spectroscopy in the extreme environment Acquisition and other functions are convenient for the acquisition of related signals in extreme environments.
图1是本实用新型的光学探头的三维示意图；1 is a three-dimensional schematic diagram of an optical probe of the present invention;
图2是图1所示的光学探头的主视图；Fig. 2 is the front view of the optical probe shown in Fig. 1;
图3是图2中A-A方向的剖视图；Fig. 3 is the sectional view of A-A direction in Fig. 2;
图中：1、护筒，11、通孔，2、探棒，21、窗口腔，22、容置腔，3、第一环形垫片，4、第二环形垫片，5、光学窗口片。In the figure: 1, protective tube, 11, through hole, 2, probe rod, 21, window cavity, 22, accommodating cavity, 3, first annular gasket, 4, second annular gasket, 5, optical window .
下面结合附图和具体实施例对本实用新型作进一步说明，以使本领域的技 术人员可以更好地理解本实用新型并能予以实施，但所举实施例不作为对本实用新型的限定。The present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present utility model and implement it, but the examples given are not intended to limit the present utility model.
如图1-图3所示，本实施例公开了一种光学探头，包括探棒2，探棒2内部设置有窗口腔21和用于容纳光学组件的容置腔22，窗口腔21位于容置腔22的端部，容置腔22和窗口腔21相连通，窗口腔21内设置有第一环形垫片3和第二环形垫片4，第一环形垫片3和第二环形垫片4之间设置有光学窗口片，第一环形垫片3和第二环形垫片4均抵顶在光学窗口片5上，以实现压紧密封，第一环形垫片3和第二环形垫片4均采用黄金垫片，光学窗口片5的硬度大于黄金垫片的硬度，探棒2的端部还连接有护筒1，窗口腔21位于护筒1的内部，护筒1的顶部设置有通孔11，通孔11和窗口腔21相连通，以利于透光。As shown in FIG. 1-FIG. 3, the present embodiment discloses an optical probe, including a probe rod 2, a window cavity 21 and an accommodation cavity 22 for accommodating optical components are provided inside the probe rod 2, and the window cavity 21 is located in the container At the end of the cavity 22, the cavity 22 is communicated with the window cavity 21. The window cavity 21 is provided with a first annular gasket 3 and a second annular gasket 4. The first annular gasket 3 and the second annular gasket There is an optical window sheet between 4, the first annular gasket 3 and the second annular gasket 4 are abutted on the optical window sheet 5 to achieve compression sealing, the first annular gasket 3 and the second annular gasket 4 All use gold gaskets, the hardness of the optical window 5 is greater than the hardness of the gold gasket, the end of the probe rod 2 is also connected with a protective tube 1, the window cavity 21 is located inside the protective tube 1, and the top of the protective tube 1 is provided with The through hole 11 is communicated with the window cavity 21 to facilitate light transmission.
可以理解的，光学窗口片5为可透光的部件，既便于光学检测，又可对探棒2内部的光学组件起到保护作用。It can be understood that the optical window sheet 5 is a light-permeable component, which is not only convenient for optical detection, but also can protect the optical components inside the probe rod 2 .
其中，第一环形垫片3和第二环形垫片4均采用黄金垫片，黄金垫片为金属垫片，其硬度(莫氏硬度)低于光学窗口片5，易发生形变，从而使得光学窗口片5能够和容置腔之间实现完全密封，有效保证了密封效果，另外，黄金是惰性金属，很难与其他物质发生反应，可耐受强酸强碱等腐蚀环境，且黄金的熔点(1064℃)较高,可耐受高温，因此，通过黄金垫片的设置，可使得上述光学探头能够在高温、低温、高压、强腐蚀等极限环境中使用。Among them, the first annular gasket 3 and the second annular gasket 4 are made of gold gaskets, and the gold gaskets are metal gaskets, and their hardness (Mohs hardness) is lower than that of the optical window sheet 5, which is easy to be deformed, so that the optical The window 5 can be completely sealed with the accommodating cavity, effectively ensuring the sealing effect. In addition, gold is an inert metal, which is difficult to react with other substances, and can withstand corrosive environments such as strong acids and alkalis, and the melting point of gold ( 1064°C) is higher and can withstand high temperature. Therefore, through the setting of the gold gasket, the above optical probe can be used in extreme environments such as high temperature, low temperature, high pressure, and strong corrosion.
在其中一个实施方式中，探棒2和护筒1采用可拆卸连接。In one of the embodiments, the probe 2 and the protective sleeve 1 are detachably connected.
进一步地，探棒2和护筒1之间可采用螺纹连接方式：探棒2的外壁上设置有外螺纹，护筒1的内壁上设置有内螺纹，外螺纹和内螺纹相旋合，该连接方式既便于拆卸，也具有较高的连接可靠性。Further, a threaded connection can be adopted between the probe rod 2 and the protective cylinder 1: the outer wall of the probe rod 2 is provided with an external thread, the inner wall of the protective cylinder 1 is provided with an internal thread, and the external thread and the internal thread are screwed together. The connection method is not only easy to disassemble, but also has high connection reliability.
可以理解地，探棒2和护筒1之间也可以采用螺纹连接之外的其他可拆卸连接方式，如卡接方式、法兰连接方式。It can be understood that other detachable connection methods other than threaded connection can also be adopted between the probe rod 2 and the protective tube 1, such as a snap connection method and a flange connection method.
在其中一个实施方式中，光学窗口片5采用石英窗片、蓝宝石窗片或红外窗片。In one of the embodiments, the optical window 5 is a quartz window, a sapphire window or an infrared window.
其中，蓝宝石窗片透光性能好，具有钢化玻璃所不能比拟的硬度及机械强度，耐跌落、耐划伤，且从真空紫外、可见、近红外一直到中红外5.5μm均具有高的光学透过率；红外窗片则用于在需要透过红外光时使用。Among them, the sapphire window has good light transmission performance, has hardness and mechanical strength unmatched by tempered glass, is resistant to drops and scratches, and has high optical transparency from vacuum ultraviolet, visible, near-infrared to mid-infrared 5.5μm. Pass rate; infrared windows are used when infrared light needs to be transmitted.
进一步地，红外窗片可采用硒化锌窗片、氟化钙窗片或氟化钡窗片等红外材料窗片，上述材质的窗片不易潮解，且能够对红外光具有较好的透过率。Further, infrared windows can be made of infrared material windows such as zinc selenide windows, calcium fluoride windows or barium fluoride windows, which are not easy to deliquescence and can transmit infrared light well. Rate.
在其中一个实施方式中，探棒2采用不锈钢件或哈氏合金件，具有良好的抗腐蚀性和热稳定性。In one of the embodiments, the probe 2 is made of stainless steel or Hastelloy, which has good corrosion resistance and thermal stability.
在其中一个实施方式中，探棒2的外壁上涂覆有耐腐蚀层。In one of the embodiments, the outer wall of the probe rod 2 is coated with a corrosion-resistant layer.
在其中一个实施方式中，耐腐蚀层采用聚四氟乙烯层，对强酸、强碱等强腐蚀性环境具有较好的耐受度。In one embodiment, the corrosion-resistant layer adopts a polytetrafluoroethylene layer, which has good resistance to strong corrosive environments such as strong acid and strong alkali.
在其中一个实施方式中，光学组件包括光纤、透镜和滤光片中的一种或多种。例如，在探棒2的容置腔22内安装光纤和透镜，则可实现照片、成像等功能；加装透镜组可实现显微成像功能；加装透镜、滤光片等元件可实现拉曼光谱、荧光光谱、近红外吸收光谱等光谱采集功能。In one embodiment, the optical assembly includes one or more of optical fibers, lenses, and filters. For example, by installing an optical fiber and a lens in the accommodating cavity 22 of the probe 2, functions such as photos and imaging can be realized; by adding a lens group, microscopic imaging functions can be realized; by adding elements such as lenses and filters, Raman can be realized Spectrum acquisition functions such as spectrum, fluorescence spectrum, and near-infrared absorption spectrum.
本实施例的光学探头，能够应用于高温、低温、高压、强腐蚀等极限环境中，例如，能够应用于温度为-100℃～400℃的温度环境中，也能够应用于压力为30MPa以下的高压环境中，还能够在含有强酸强碱等强腐蚀介质的反应釜中长期使用。使得光学传感器能够在极限环境中正常进行照明、成像、显微成像、光谱采集等功能，便于在极限环境中进行相关信号的采集。The optical probe of this embodiment can be used in extreme environments such as high temperature, low temperature, high pressure, and strong corrosion. For example, it can be used in a temperature environment with a temperature of -100°C to 400°C, and can also be used in a pressure below 30MPa. In a high-pressure environment, it can also be used for a long time in a reactor containing strong corrosive media such as strong acid and alkali. The optical sensor can normally perform functions such as illumination, imaging, microscopic imaging, and spectrum acquisition in extreme environments, which facilitates the acquisition of relevant signals in extreme environments.
以上所述实施例仅是为充分说明本实用新型而所举的较佳的实施例，本实用新型的保护范围不限于此。本技术领域的技术人员在本实用新型基础上所作的等同替代或变换，均在本实用新型的保护范围之内。本实用新型的保护范围以权利要求书为准。The above-mentioned embodiments are only preferred embodiments for fully explaining the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present utility model is subject to the claims.
Claims (9)
- 一种光学探头，其特征在于，包括探棒，所述探棒内部设置有窗口腔和用于容纳光学组件的容置腔，所述容置腔和所述窗口腔相连通，所述窗口腔内设置有第一环形垫片和第二环形垫片，所述第一环形垫片和第二环形垫片之间设置有光学窗口片，所述第一环形垫片和第二环形垫片均抵顶在所述光学窗口片上，所述第一环形垫片和第二环形垫片均采用黄金垫片，所述光学窗口片的硬度大于所述黄金垫片的硬度，所述探棒的端部还连接有护筒，所述窗口腔位于所述护筒的内部，护筒顶部设置有通孔，所述通孔和所述窗口腔相连通。An optical probe is characterized in that it includes a probe rod, and the probe rod is provided with a window cavity and an accommodation cavity for accommodating an optical component, the accommodation cavity is communicated with the window cavity, and the window cavity is A first annular gasket and a second annular gasket are arranged inside, an optical window is arranged between the first annular gasket and the second annular gasket, and both the first annular gasket and the second annular gasket are Abutting on the optical window, the first annular gasket and the second annular gasket are gold gaskets, the hardness of the optical window is greater than the hardness of the gold gasket, the end of the probe rod The part is also connected with a protective tube, the window cavity is located inside the protective tube, a through hole is provided on the top of the protective tube, and the through hole is communicated with the window cavity.
- 如权利要求1所述的光学探头，其特征在于，所述探棒和所述护筒采用可拆卸连接。The optical probe according to claim 1, wherein the probe rod and the protective sleeve are detachably connected.
- 如权利要求2所述的光学探头，其特征在于，所述探棒外壁上设置有外螺纹，所述护筒内壁上设置有内螺纹，所述外螺纹和内螺纹相旋合。The optical probe according to claim 2, wherein an outer thread is provided on the outer wall of the probe rod, an inner thread is provided on the inner wall of the protective tube, and the outer thread and the inner thread are screwed together.
- 如权利要求1所述的光学探头，其特征在于，所述光学窗口片采用石英窗片、蓝宝石窗片或红外窗片。The optical probe according to claim 1, wherein the optical window is a quartz window, a sapphire window or an infrared window.
- 如权利要求4所述的光学探头，其特征在于，所述红外窗片包括硒化锌窗片、氟化钙窗片或氟化钡窗片。The optical probe of claim 4, wherein the infrared windows comprise zinc selenide windows, calcium fluoride windows or barium fluoride windows.
- 如权利要求1所述的光学探头，其特征在于，所述探棒采用不锈钢件或哈氏合金件。The optical probe according to claim 1, wherein the probe rod is made of stainless steel or Hastelloy.
- 如权利要求1所述的光学探头，其特征在于，所述探棒外壁上涂覆有耐腐蚀层。The optical probe according to claim 1, wherein the outer wall of the probe rod is coated with a corrosion-resistant layer.
- 如权利要求1所述的光学探头，其特征在于，所述耐腐蚀层采用聚四氟乙烯层。The optical probe of claim 1, wherein the corrosion-resistant layer is a polytetrafluoroethylene layer.
- 如权利要求1所述的光学探头，其特征在于，所述光学组件包括光纤、透镜和滤光片中的一种或多种。The optical probe of claim 1, wherein the optical component comprises one or more of optical fibers, lenses and filters.
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