Non-contact flow cell for online optical fiber detection in explosion-proof environment

Abstract

The utility model discloses a non-contact flow cell for on-line optical fiber detection in an explosion-proof environment, which comprises a main body part provided with a medium channel along the vertical direction and a through mounting hole along the transverse direction; the number of the optical assemblies is two, and the two optical assemblies are installed at the two ports of the installation hole respectively; wherein the optical assembly comprises an installation seat, the installation seat is detachably installed in the installation hole, a center hole is formed in the installation seat, and the center hole and the installation hole are coaxially arranged; the lens base is detachably installed in the center hole, and a convex lens is installed in the lens base; and the lens is detachably mounted in the central hole and is propped against the inner end of the lens seat. The safety of the detection process is guaranteed, and the structures of all parts of the optical assembly are detachably connected, so that the optical assembly is convenient to disassemble and assemble, and is convenient to repair and maintain.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary devices for testing instruments, specifically to a non-contact flow cell for online fiber optic testing in explosion-proof environments. Background Technology

[0002] Near-infrared optical detection is widely used in various fields, and it is also quite common in workshop environment monitoring. Workshops are divided into explosion-proof workshops and non-explosion-proof workshops. For monitoring in non-explosion-proof workshop environments, the traditional method of using a light source and detection equipment is sufficient. However, for workshop environments with explosion-proof requirements, only explosion-proof testing equipment that has been certified can be used. However, taking the flow cell for spectrometers disclosed in patent CN217717483U as an example, the flow cells of existing explosion-proof testing equipment have problems such as poor safety during the testing process and difficulty in maintenance. Utility Model Content

[0003] Therefore, this utility model provides a non-contact flow cell for online optical fiber detection in explosion-proof environments to solve at least one of the above-mentioned technical problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This utility model provides a non-contact flow cell for online fiber optic detection in explosion-proof environments, comprising:

[0006] The main body has a medium channel opened vertically and a through mounting hole opened horizontally.

[0007] An optical assembly, comprising two optical assemblies, each mounted on one of the two ports of the mounting hole; wherein the optical assembly includes:

[0008] The mounting base is detachably installed in the mounting hole, and the mounting base has a central hole, which is coaxially arranged with the mounting hole;

[0009] A mirror mount is detachably installed in the central hole, and a convex mirror is installed inside the mirror mount;

[0010] The lens is detachably mounted in the central hole and abuts against the inner end of the lens mount.

[0011] By installing two optical components at the two ports of the mounting hole, non-contact detection of the fluid medium flowing through the medium channel can be achieved. This avoids direct contact with the fluid medium, thereby reducing the risk of contamination or damage that may result from contact, and improving the accuracy and reliability of the detection. It is particularly suitable for online fiber optic detection in explosion-proof environments, ensuring the safety of the detection process. Furthermore, all parts of the optical components are detachable, facilitating disassembly and assembly, and thus simplifying maintenance and repair.

[0012] In some embodiments, the optical component further includes:

[0013] A base, which is detachably installed inside the lens mount and located at the end of the lens mount away from the lens, has an optical fiber mounting structure.

[0014] In some embodiments, a first clamping pad is provided between the base and the limiting boss of the mirror mount.

[0015] In some embodiments, a first clamping nut is provided at the end of the base away from the convex mirror.

[0016] In some embodiments, a second clamping pad is provided between the lens mount and the lens.

[0017] In some embodiments, a second clamping nut is provided at the end of the convex mirror away from the base.

[0018] In some embodiments, quick-connect chucks are provided at both ends of the medium channel of the main body. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a schematic diagram of the flow cell provided by this utility model;

[0022] Figure 2 This is one of the partial structural cross-sectional views of the flow cell provided by this utility model;

[0023] Figure 3 This is a partial structural cross-sectional view of the flow cell provided by this utility model;

[0024] Figure 4 This is the third partial structural cross-sectional view of the flow cell provided by this utility model;

[0025] Figure 5 This is a schematic diagram of the quick-connect chuck in the flow pool provided by this utility model;

[0026] Figure 6 This is a schematic diagram of the main body of the flow tank provided by this utility model;

[0027] Figure 7 This is a schematic diagram of the structure of the mounting base in the flow pool provided by this utility model;

[0028] Figure 8 This is a schematic diagram of the structure of the mirror holder in the flow cell provided by this utility model;

[0029] Figure 9 This is a schematic diagram of the structure of the first pressing gasket in the flow pool provided by this utility model;

[0030] Figure 10 This is a schematic diagram of the structure of the second pressing gasket in the flow pool provided by this utility model;

[0031] Figure 11 This is a schematic diagram of the structure of the lens in the flow cell provided by this utility model;

[0032] Figure 12 This is a schematic diagram of the structure of the second clamping nut in the flow pool provided by this utility model;

[0033] Figure 13 This is a schematic diagram of the convex mirror in the flow cell provided by this utility model;

[0034] Figure 14 This is a schematic diagram of the structure of the first clamping nut in the flow pool provided by this utility model;

[0035] Figure 15 This is a schematic diagram of the structure of the base in the flow pool provided by this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Main body; 11. Media channel; 12. Mounting hole; 2. Mounting base; 3. Mirror mount;

[0038] 4. Lens; 5. Base; 6. First clamping washer; 7. First clamping nut;

[0039] 8. Second clamping washer; 9. Second clamping nut; 10. Quick-connect chuck; 11. Convex mirror. Detailed Implementation

[0040] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] In one specific implementation, such as Figures 1-15 As shown, the non-contact flow cell for online fiber optic detection in explosion-proof environments provided by this utility model includes a main body 1 and optical components. The main body 1 has a medium channel 11 vertically and a through mounting hole 12 horizontally. Two optical components are installed at the two ports of the mounting hole 12, respectively. The two optical components have the same structure and function and are symmetrically arranged on both sides of the main body 1. Each optical component includes a mounting base 2, a lens mount 3, and a lens 4, preferably made of sapphire. The mounting base 2 is detachably installed in the mounting hole 12 and has a central hole coaxial with the mounting hole 12. The lens mount 3 is detachably installed in the central hole, and a convex lens 11 is installed inside the lens mount 3. The lens 4 is detachably installed in the central hole and abuts against the inner end of the lens mount 3.

[0042] By installing two optical components at the two ports of the mounting hole 12, non-contact detection of the fluid medium flowing through the medium channel 11 can be achieved. This avoids direct contact with the fluid medium, thereby reducing the risk of contamination or damage that may result from contact, and improving the accuracy and reliability of the detection. It is particularly suitable for online fiber optic detection in explosion-proof environments, ensuring the safety of the detection process. Furthermore, all parts of the optical components are detachable, facilitating disassembly and assembly, and thus simplifying maintenance and repair.

[0043] Furthermore, the optical component also includes a base 5, which is detachably installed within the lens mount 3 and located at the end of the lens mount 3 furthest from the lens 4. The base 5 has an optical fiber mounting structure. The base 5 provides a stable mounting structure for the optical fiber, facilitating its connection and fixation, ensuring a reliable connection between the optical fiber and the optical component, and further improving the stability and accuracy of the detection system. The optical fiber mounting structure on the base 5 can employ slotted, threaded, or adhesive structures to adapt to different types of optical fibers and installation requirements, improving the compatibility of the flow cell.

[0044] A first clamping gasket 6 can also be provided between the base 5 and the limiting boss of the lens mount 3. The first clamping gasket 6 can effectively prevent loosening and displacement between the base 5 and the lens mount 3, improve the overall structural stability of the optical assembly, and also play a certain sealing role to prevent fluid media from seeping into the interior of the optical assembly, further enhancing the explosion-proof performance and reliability of the flow cell. Specifically, the first clamping gasket 6 can be replaced by gaskets made of other materials with elasticity and sealing properties, such as rubber gaskets, silicone gaskets, or metal gaskets, to meet different sealing and clamping requirements. The first clamping gasket 6 is preferably a sapphire gasket.

[0045] Meanwhile, a first clamping nut 7 can also be provided at the end of the base 5 away from the convex lens 11. The first clamping nut 7 is located on the outer side of the main body 1. The first clamping nut 7 further strengthens the connection and tightness between the base 5 and the lens mount 3. By tightening the first clamping nut 7, the base 5 can be more firmly installed in the lens mount 3, ensuring the stability and reliability of the optical components. It also facilitates fine-tuning of the installation position of the base 5, improving the installation accuracy and flexibility. In order to achieve the clamping and fixing of the base 5, it is not limited to the above-mentioned structure of the first clamping nut 7. Locking screws, retaining rings or other similar fasteners can also be used.

[0046] Similarly, a second clamping gasket 8 can be provided between the lens mount 3 and the lens 4. The second clamping gasket 8 effectively prevents loosening and displacement between the lens 4 and the lens mount 3, ensuring stable installation of the lens 4 within the lens mount 3. It also provides a certain degree of sealing, preventing fluid media from seeping into the optical components, further enhancing the explosion-proof performance and reliability of the flow cell, and improving the accuracy and stability of the detection. The second clamping gasket 8 can be a rubber gasket, a silicone gasket, or a metal gasket to meet different sealing and clamping requirements. Preferably, the second clamping gasket 8 is a sapphire gasket.

[0047] Furthermore, a second clamping nut 9 is provided at the end of the convex lens 11 away from the base 5, that is, the second clamping nut 9 is provided at the inner end of the convex lens 11. The provision of the second clamping nut 9 further strengthens the connection and tightness between the convex lens 11 and the lens base 3. By tightening the second clamping nut 9, the convex lens 11 can be more firmly installed in the lens base 3, ensuring the stability and reliability of the optical components. At the same time, it is also convenient to fine-tune the installation position of the convex lens 11, improving the installation accuracy and flexibility, and further improving the accuracy and stability of the detection. In order to achieve the clamping and fixing of the convex lens 11, it is not limited to the structural form of the second clamping nut 9; locking screws, retaining rings, or other similar fasteners can also be used.

[0048] Quick-connect chucks 10 are provided at both ends of the medium channel 11 of the main body. The quick-connect chucks 10 facilitate the quick connection and disassembly of the medium channel 11 with external pipelines, which improves the installation and maintenance efficiency of the flow cell. At the same time, it can also ensure the reliability and sealing of the connection, prevent the leakage of fluid medium, and further enhance the explosion-proof performance and reliability of the flow cell, making it more suitable for online fiber optic detection in explosion-proof environments.

[0049] To facilitate understanding, the overall scheme and working process of the flow pool provided by this utility model will be described below through a specific embodiment.

[0050] Please continue to refer to this. Figures 1-15 The flow cell of this utility model has a symmetrical structure, including a main body 1, a mounting base 2, a lens base 3, a first clamping nut 7, a second clamping nut 9, a sapphire lens 4, a first clamping washer 6, and a second clamping washer 8. Quick-connect chucks 10 are welded to the upper and lower ends of the main body 1, respectively. The mounting base 2 is installed on the left and right sides of the main body. The center hole of the mounting base 2 is used to install the lens 4 and the second clamping washer 8. After the sapphire lens 4 is installed, the lens base 3 is installed on the other side of the lens 4. A convex lens 11 is installed inside the lens base 3. The convex lens 11 is screwed into the lens base 3 by the second clamping nut 9 to hold the convex lens 11 in place. The lens base 3 is installed on the mounting base 2 by four bolts. The sapphire lens 4 is clamped by tightening the four bolts. The other end of the lens base 3 is used to install an SMA905 model base 5. The base 5 is fixed to the other end of the lens base 3 by two first clamping nuts 7. The base 5 is used to install optical fibers.

[0051] This flow cell can be used for optical detection of media in pipelines. When in use, it needs to be installed on the equipment pipeline using a quick-connect chuck 10. The overall vertical direction is a passage for the media in the pipeline to pass through. On the left and right sides are two sapphire lenses 4 that contact the media in the pipeline and act as viewing windows. Optical fibers are used on both sides for light propagation and acquisition. First, one optical fiber is connected to the light source. The light source passes through the optical fiber, the lens, and the sapphire lens 4 to illuminate the media in the pipeline. Then, it passes through the sapphire lens 4 and the convex mirror 11 and enters the optical fiber at the other end. Finally, it enters the analysis equipment for analysis.

[0052] The flow cell provided by this utility model has a simple structure and is easy to process. It adopts quick-connect installation at both ends, which can be adapted to pipelines of different sizes. It uses optical fiber for data acquisition, meets explosion-proof requirements, is easy to maintain, and the position of the optical fiber is adjustable to meet different optical path requirements.

[0053] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this utility model should be included within the scope of protection of this utility model.

Claims

1. A non-contact flow cell for online fiber optic detection in explosion-proof environments, characterized in that, include: The main body has a medium channel opened vertically and a through mounting hole opened horizontally. An optical assembly, comprising two optical assemblies, each mounted on one of the two ports of the mounting hole; wherein the optical assembly includes: The mounting base is detachably installed in the mounting hole, and the mounting base has a central hole, which is coaxially arranged with the mounting hole; A mirror mount is detachably installed in the central hole, and a convex mirror is installed inside the mirror mount; The lens is detachably mounted in the central hole and abuts against the inner end of the lens mount.

2. The non-contact flow cell for online fiber optic detection in explosion-proof environments according to claim 1, characterized in that, The optical components also include: A base, which is detachably installed inside the lens mount and located at the end of the lens mount away from the lens, has an optical fiber mounting structure.

3. The non-contact flow cell for online fiber optic detection in explosion-proof environments according to claim 2, characterized in that, A first clamping pad is provided between the base and the limiting boss of the mirror mount.

4. The non-contact flow cell for online fiber optic detection in explosion-proof environments according to claim 3, characterized in that, A first clamping nut is provided at the end of the base away from the convex mirror.

5. The non-contact flow cell for online fiber optic detection in explosion-proof environments according to claim 4, characterized in that, A second clamping pad is provided between the lens mount and the lens.

6. The non-contact flow cell for online fiber optic detection in explosion-proof environments according to claim 3, characterized in that, A second clamping nut is provided at the end of the convex mirror away from the base.

7. The non-contact flow cell for online fiber optic detection in explosion-proof environments according to any one of claims 1-6, characterized in that, The two ends of the medium channel of the main body are respectively provided with quick-connect chucks.

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