Gas flow device and gas detection apparatus

Abstract

The application discloses a gas flow device and a gas detection device. The gas flow device comprises a gas pool, a mounting assembly, and a plurality of light-transmitting parts. The gas pool comprises a gas chamber, an air inlet path and an air outlet path in communication with the gas chamber, and the plurality of light-transmitting parts are arranged around the gas chamber. Each light-transmitting part forms a part of the cavity wall of the gas chamber to allow light to enter and exit the gas chamber through the light-transmitting part. The mounting assembly comprises a mounting connector and a locking mechanism. The gas pool is connected to the mounting connector, and the locking mechanism is configured to selectively lock the mounting connector to a base or release the locking of the mounting connector to the base. The gas flow device provided by the embodiment of the application can realize the quick disassembly and assembly of the gas pool through the state switching of the locking mechanism, improve the disassembly and assembly convenience of the gas pool, facilitate the position replacement, maintenance, cleaning and the like of the gas pool, and thus facilitate the application of the gas pool in practice.

Description

Technical Field

[0001] This application belongs to the field of gas detection technology, and in particular relates to a gas flow device and a gas detection equipment. Background Technology

[0002] Gas sample analysis is a crucial experimental step in the field of gas detection and is widely used in gas detection, industrial process control, and pollution source emission monitoring. Gas detection typically employs gas cells and spectral absorption techniques for gas analysis. Gas cells, being enclosed spaces, effectively prevent the leakage of toxic and harmful gases, thus avoiding environmental pollution.

[0003] However, existing gas tanks have always remained at the most basic functional design level, lacking consideration for the installation of gas tanks, which has prevented them from being widely used in practice. Summary of the Invention

[0004] The inventors recognized that gas detection typically requires multiple sample sampling and analysis at multiple different locations, and that the gas cell also needs to be regularly inspected and cleaned. Therefore, improving the ease of disassembly and assembly of the gas cell is one of the important prerequisites for its practical application.

[0005] This application provides a gas flow device and a gas detection device to improve the ease of disassembly and assembly of a gas pool, thereby facilitating practical applications.

[0006] According to a first aspect of this application, this application provides a gas flow device, comprising: a gas pool including a gas chamber, an inlet path and an outlet path communicating with the gas chamber, and a plurality of light-transmitting portions surrounding the gas chamber, each light-transmitting portion forming part of the cavity wall surrounding the gas chamber to allow light to enter and exit the gas chamber through the light-transmitting portion; and a mounting assembly including a mounting connector and a locking mechanism, the gas pool being connected to the mounting connector, and the locking mechanism being configured to selectively lock the mounting connector to a base or release the locking connection between the mounting connector and the base.

[0007] Optionally, the plurality of light-transmitting parts include an incident light-transmitting part, an exit light-transmitting part, a first reflective light-transmitting part, and a second reflective light-transmitting part. The incident light-transmitting part, the exit light-transmitting part, the first reflective light-transmitting part, and the second reflective light-transmitting part are arranged opposite to each other along the first direction and the second direction, and the first direction and the second direction intersect.

[0008] Optionally, the inlet path and outlet path are connected to the gas chamber on one side along the third direction, with the first direction, the second direction and the third direction being perpendicular to each other; the gas flow device also includes a temperature control component, which is thermally connected to the gas chamber on the other side along the third direction to regulate the temperature inside the gas chamber.

[0009] Optionally, the gas pool includes a body, the interior of which defines a first channel and a second channel. The first channel extends along a first direction, and the second channel extends along a second direction. The first channel and the second channel intersect and communicate to form a gas chamber. An incident light-transmitting part, an exit light-transmitting part, a first reflective light-transmitting part, and a second reflective light-transmitting part are respectively located at the axial ends of the first channel and the second channel.

[0010] Optionally, the mounting connector includes a guide groove extending along a first direction for a slide rail of the base to be inserted therein; the locking mechanism is configured to selectively lock or release the mounting connector and the slide rail along the first direction, wherein in the locked state, the locking mechanism restricts the movement of the mounting connector relative to the slide rail along the first direction, and in the released state, the mounting connector is movable relative to the slide rail along the first direction.

[0011] Optionally, the locking mechanism includes a first locking component and a second locking component; the first locking component is configured to be detachably connected to the slide rail along a second direction, and the second locking component is configured to be detachably connected to the slide rail along a third direction, wherein the first direction, the second direction, and the third direction are perpendicular to each other.

[0012] Optionally, the mounting connector includes a first limiting groove extending along a second direction, the first end of the first limiting groove communicating with a guide groove along the second direction; the first locking assembly includes a first limiting member and a first elastic member, the first limiting member being movably disposed in the first limiting groove along the second direction, in the locked state, the first limiting member at least partially extending out of the first limiting groove and protruding into the interior of the guide groove, in the released state, the first limiting member being located inside the first limiting groove; the first elastic member being disposed in the first limiting groove along the second direction, one end of the first elastic member abutting against the first limiting member, and the other end abutting against the first axial limiting portion, the first axial limiting portion being fixed relative to the first limiting groove along the second direction.

[0013] Optionally, the gas flow device further includes: a base, the base including a slide rail extending along a first direction, the slide rail including a second limiting groove extending along a third direction; a second locking assembly including a second limiting hole and a second limiting member, the second limiting hole being a blind hole provided along a third direction and communicating with the guide groove; the second limiting member being movably disposed in the second limiting groove along a third direction, in the locked state, the second limiting member at least partially extending out of the second limiting groove and inserted into the second limiting hole, and in the released state, the second limiting member being inside the second limiting groove.

[0014] Optionally, the gas flow device further includes: an adjustment mechanism configured to be movable along a first direction, a second direction and a third direction to adjust the angle of the optical device used in conjunction with the gas flow device relative to the light-transmitting portion; the first direction, the second direction and the third direction are perpendicular to each other.

[0015] According to a second aspect of this application, embodiments of this application also provide a gas detection device, which includes a plurality of optical devices and a gas flow device provided in any of the above embodiments, wherein the plurality of optical devices are respectively disposed opposite to a plurality of light-transmitting portions of the gas flow device.

[0016] The gas flow device provided in this application includes a gas pool and an installation assembly. The gas pool includes a gas chamber, an inlet path, an outlet path, and multiple light-transmitting sections. The target gas to be measured enters the gas chamber through the inlet path and flows out through the outlet path. Multiple light-transmitting sections surround the gas chamber and form part of the chamber wall, allowing light to enter and exit the gas chamber. This provides a structural basis for observing and / or detecting the target gas inside the gas chamber using an optical device, facilitating the basic function of gas detection. The installation assembly includes a mounting connector and a locking mechanism. The gas pool is connected to the mounting connector, and the locking mechanism securely connects the mounting connector to a base, facilitating rapid installation of the gas pool. The locking mechanism also releases the locking connection between the mounting connector and the base, facilitating rapid disassembly of the gas pool. The gas circulation device provided in this application embodiment can quickly disassemble and assemble the gas pool by switching the state of the locking mechanism (locked state and released state), which improves the convenience of disassembling and assembling the gas pool, and facilitates the replacement, maintenance, and cleaning of the gas pool, thereby making it easier to apply the gas pool to practical applications.

[0017] The gas flow device provided in this application embodiment is also provided with an installation connector connected to the gas pool. By installing and disassembling the gas pool through the installation connector, not only can a stable support be provided for the gas pool, but also during the disassembly and assembly process, the installation connector directly cooperates with the locking mechanism instead of the gas pool, which will not have an adverse effect on the structural stability of the gas pool. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of a gas flow device provided in one embodiment of this application.

[0020] Figure 2 yes Figure 1 A schematic diagram of the gas pool in the gas flow device shown.

[0021] Figure 3 yes Figure 1 The diagram shows a cross-sectional view of the gas pool in one direction of the gas flow device.

[0022] Figure 4 yes Figure 1 A schematic cross-sectional view of the gas pool of the gas flow device shown in another direction.

[0023] Figure 5 yes Figure 1 The diagram shows a cross-sectional view of the installation components and related structures of the gas flow device along one direction.

[0024] Figure 6 yes Figure 1 A cross-sectional view of the installation components and related structures of the gas flow device shown in another direction.

[0025] Figure 7 yes Figure 1 A schematic cross-sectional view of the gas flow device shown.

[0026] Figure 8 This is a schematic diagram of the slide rail that cooperates with the gas flow device provided in the embodiments of this application.

[0027] Figure 9 This is an exploded structural diagram of a gas flow device provided in another embodiment of this application.

[0028] Figure 10 This is a schematic diagram of the structure of a gas detection device provided in one embodiment of this application. Detailed Implementation

[0029] The features and exemplary embodiments of various aspects of this application will now be described in detail. Numerous specific details are set forth in the following detailed description in order to provide a comprehensive understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without some of these specific details. The following description of embodiments is merely intended to provide a better understanding of this application by illustrating examples thereof.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0031] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0032] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0033] In the description of the embodiments in this application, the term "and / or" is merely a description of the association relationship between related objects, indicating that three relationships can exist. For example, m and / or n can represent: m alone, m and n simultaneously, and n alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0034] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two).

[0035] In the description of the embodiments of this application, the technical terms "vertical", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0036] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0037] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 85°-90°, the two directions can be considered perpendicular; if the angle between two directions is 0°-5°, the two directions can be considered parallel.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The embodiments will now be described in detail with reference to the accompanying drawings.

[0039] Figure 1 This is a schematic diagram of the structure of a gas flow device provided in one embodiment of this application. (Refer to...) Figure 1 The gas circulation device 1 provided in this application embodiment includes a gas pool 10 and an installation assembly 20.

[0040] Figure 2 yes Figure 1 The diagram shows the structure of the gas pool in the gas flow device. Figure 3 yes Figure 1 The diagram shows a cross-sectional view of the gas pool in the gas flow device along one direction. Figure 4 yes Figure 1 A schematic cross-sectional view of the gas pool in the gas flow device shown, taken from another direction. (Refer to...) Figures 2 to 4 The gas pool 10 includes a gas chamber 11, an air inlet path 12 and an air outlet path 13 communicating with the gas chamber 11, and a plurality of light-transmitting parts surrounding the gas chamber 11. Each light-transmitting part forms part of the wall surrounding the gas chamber 11 to allow light to enter and exit the gas chamber 11 through the light-transmitting part.

[0041] Figure 5 yes Figure 1 The diagram shows a cross-sectional view of the installation components and related structures of the gas flow device along one direction. Figure 6 yes Figure 1 The diagram shows a cross-sectional view of the gas flow device's mounting assembly and related structures along another direction. The mounting assembly 20 includes a mounting connector 21 and a locking mechanism 22. The gas pool 10 is connected to the mounting connector 21. The locking mechanism 22 is configured to selectively lock the mounting connector 21 to a base or release the locking connection between the mounting connector 21 and the base.

[0042] Gas chamber 11 is a closed chamber to prevent gas from overflowing and causing harm.

[0043] The air inlet path 12 and the air outlet path 13 can be any structural form that connects the gas chamber 11 and the outside of the gas pool 10. For example, the air inlet path 12 and the air outlet path 13 can be a channel structure or a hole structure.

[0044] The light-transmitting part allows light to pass through it. For example, the light-transmitting part can be transparent glass, plastic, etc.

[0045] The cavity wall of the gas chamber 11 forms the gas chamber 11, and each light-transmitting part forms part of the cavity wall, and the positions of the multiple light-transmitting parts do not overlap.

[0046] The gas pool 10 can be directly connected to the mounting connector 21, or indirectly connected to the mounting connector 21 through an intermediate connector.

[0047] The gas pool 10 can be fixed relative to the mounting connector 21 so that it can be installed and removed synchronously with the mounting connector 21.

[0048] The locking mechanism 22 has a locked state and a released state. In the locked state, the mounting connector 21 is fixed relative to the base and no relative displacement occurs, thus facilitating the installation and fixing of the gas pool 10 and the mounting connector 21 together on the base. In the released state, the locking effect between the mounting connector 21 and the base is released, and the mounting connector 21 can move relative to the base, thus facilitating the removal of the gas pool 10 and the mounting connector 21 together from the base.

[0049] The gas flow device 1 provided in this application embodiment includes a gas pool 10 and a mounting assembly 20. The gas pool 10 includes a gas chamber 11, an inlet path 12, an outlet path 13, and multiple light-transmitting sections. The target gas to be measured can enter the gas chamber 11 through the inlet path 12 and flow out through the outlet path 13. Multiple light-transmitting sections surround the gas chamber 11 and form part of the cavity wall of the gas chamber 11. Light can enter and exit the gas chamber 11 through the light-transmitting sections, thus providing a structural basis for observing and / or detecting the target gas inside the gas chamber 11 using an optical device, facilitating the realization of the basic function of gas detection. The mounting assembly 20 includes a mounting connector 21 and a locking mechanism 22. The gas pool 10 is connected to the mounting connector 21. The locking mechanism 22 can lock the mounting connector 21 to a base, facilitating the rapid installation of the gas pool 10. The locking mechanism 22 can also release the locking connection between the mounting connector 21 and the base, facilitating the rapid disassembly of the gas pool 10. The gas circulation device 1 provided in this application embodiment can quickly disassemble and assemble the gas pool 10 by switching the state of the locking mechanism 22 (locked state and released state), which improves the convenience of disassembling and assembling the gas pool 10, facilitates the replacement, maintenance, and cleaning of the gas pool 10, and meets the needs of practical applications of the gas pool 10.

[0050] The gas flow device 1 provided in this embodiment is also provided with an installation connector 21 connected to the gas pool 10. By installing and disassembling the gas pool 10 through the installation connector 21, not only can it provide stable support for the gas pool 10, but also during the disassembly and assembly process, the installation connector 21 directly cooperates with the locking mechanism 22 instead of the gas pool 10, which will not have an adverse effect on the structural stability of the gas pool 10.

[0051] In some embodiments, the plurality of light-transmitting portions include an incident light-transmitting portion 14, an exiting light-transmitting portion 15, and at least one reflective light-transmitting portion. The incident light-transmitting portion 14 is configured to allow external light to enter the gas chamber 11. The exiting light-transmitting portion 15 is configured to allow light inside the gas chamber 11 to exit. The reflective light-transmitting portion is configured to allow light inside the gas chamber 11 to exit to a reflecting device and, after being reflected by the reflecting device, to enter the gas chamber 11.

[0052] The incident light-transmitting part 14 is used in conjunction with a light-emitting device that emits incident light. The exit light-transmitting part 15 is used in conjunction with a spectral collecting device that collects light. The reflective light-transmitting part is used in conjunction with a reflective device that can reflect radiated light.

[0053] Optionally, the incident light-transmitting part 14 is arranged opposite to the light-emitting device, the exiting light-transmitting part 15 is arranged opposite to the spectral collection device, and the reflecting light-transmitting part is arranged opposite to the reflecting device.

[0054] For example, the light-emitting device can be a laser device. The laser emitted by the laser device shines through the incident light-transmitting part 14 into the gas chamber 11, exciting the gas in the gas chamber 11 to generate a scattered fluorescence signal. The reflective light-transmitting part allows the emitting device to reflect and focus the fluorescence signal. The exiting light-transmitting part 15 allows the focused fluorescence signal to be emitted, so that the spectral collection device can collect the fluorescence signal. The collected fluorescence signal can be used to detect and / or analyze the gas in the gas chamber 11.

[0055] The structures of the incident light-transmitting part 14, the exit light-transmitting part 15, and the reflective light-transmitting part can be the same, but they can differ slightly depending on their functions.

[0056] In this embodiment, the gas cell 10 not only has a conventional incident light-transmitting part 14 and an outgoing light-transmitting part 15, but also has at least one reflective light-transmitting part. The reflective light-transmitting part is beneficial for the emission and focusing of the fluorescence signal, thereby facilitating the enhancement of signal intensity and improving the accuracy of gas detection.

[0057] In some embodiments, at least one reflective light-transmitting portion includes a first reflective light-transmitting portion 161 and a second reflective light-transmitting portion 162. The incident light-transmitting portion 14, the exit light-transmitting portion 15, the first reflective light-transmitting portion 161 and the second reflective light-transmitting portion 162 are arranged opposite to each other along a first direction X and a second direction Y, and the first direction X and the second direction Y intersect.

[0058] The first direction X and the second direction Y can intersect perpendicularly. At this time, the incident light-transmitting part 14, the exit light-transmitting part 15, the first reflective light-transmitting part 161 and the second reflective light-transmitting part 162 are respectively located in four mutually perpendicular directions, and their mutual influence is small.

[0059] This application embodiment does not limit the relative positional relationship between the incident light-transmitting portion 14, the exiting light-transmitting portion 15, the first reflecting light-transmitting portion 161, and the second reflecting light-transmitting portion 162. Exemplarily, the incident light-transmitting portion 14 may be arranged opposite to the first reflecting light-transmitting portion 161, and the exiting light-transmitting portion 15 may be arranged opposite to the second reflecting light-transmitting portion 162. Alternatively, the incident light-transmitting portion 14 may also be arranged opposite to the exiting light-transmitting portion 15, and the first reflecting light-transmitting portion 161 may be arranged opposite to the second reflecting light-transmitting portion 162.

[0060] This embodiment of the application, by setting two reflective light-transmitting parts, can focus and reflect light signals in two directions, further improving signal strength. The two reflective light-transmitting parts, the incident light-transmitting part 14, and the exit light-transmitting part 15 are arranged opposite each other in pairs, the optical path design is reasonable, and the light-transmitting parts are neither crowded nor sparse. The position design of each light-transmitting part and the number of reflective light-transmitting parts are also reasonable.

[0061] Figure 7 yes Figure 1 A schematic cross-sectional view of the gas flow device shown. (Refer to...) Figures 1 to 7 In some embodiments, the air inlet path 12 and the air outlet path 13 are connected to the gas chamber 11 on one side along the third direction Z, with the first direction X, the second direction Y, and the third direction Z being perpendicular to each other. The gas flow device 1 also includes a temperature control component 30, which is thermally connected to the gas chamber 11 on the other side along the third direction Z to regulate the temperature inside the gas chamber 11.

[0062] The air intake path 12 and the air outlet path 13 can be connected to the air intake pipe 51 and the air outlet pipe 52, respectively. Accordingly, the air intake pipe 51 and the air outlet pipe 52 are located on the side of the gas chamber 11 along the third direction Z.

[0063] As mentioned above, the incident light-transmitting part 14, the exit light-transmitting part 15, and the reflective light-transmitting part are respectively arranged opposite to the light-emitting device, the spectral collection device, and the reflective device. The light-emitting device, the spectral collection device, and the reflective device can be located on both sides of the gas chamber 11 along the first direction X and the second direction Y, respectively.

[0064] The temperature control component 30 can be located on the other side of the gas chamber 11 along the third direction Z to facilitate thermal connection with the gas chamber 11.

[0065] Optionally, the first direction X and the second direction Y are both parallel to the horizontal direction, and the third direction Z is parallel to the vertical direction. The air inlet path 12 and the air outlet path 13 can be connected to the top of the gas chamber 11, and the temperature control component 30 is thermally connected to the bottom of the gas chamber 11. Due to the principle of hot air rising, the heat transferred from the temperature control component 30 to the bottom of the gas chamber 11 can naturally dissipate to the top of the gas chamber 11, which is beneficial to the temperature balance inside the gas chamber 11.

[0066] The thermal connection between the temperature control component 30 and the gas chamber 11 means that heat can be transferred between the temperature control component 30 and the gas chamber 11. In particular, the temperature control component 30 can transfer heat to the gas chamber 11.

[0067] In this embodiment, the air inlet path 12 and the air outlet path 13 are located on one side of the gas chamber 11 along the third direction Z, the temperature control component 30 is located on the other side of the gas chamber 11 along the third direction Z, and multiple light-transmitting parts are located on both sides of the gas chamber 11 along the first direction X and the second direction Y. The air inlet and outlet structure, the light path structure, and the temperature control structure of the gas chamber 11 are separated from each other and do not affect each other, thus improving the rationality of the structural layout.

[0068] The temperature control component 30 can heat the gas chamber 11, thereby achieving the purpose of heating the target gas to be tested and preventing the target gas from being too cold, which would cause fogging in the light-transmitting part and affect the transmission of light.

[0069] In some embodiments, the gas pool 10 includes a body 17, the interior of which defines a first channel 171 and a second channel 172. The first channel 171 extends along a first direction X, and the second channel 172 extends along a second direction Y. The first channel 171 and the second channel 172 intersect and communicate to form a gas chamber 11. An incident light-transmitting portion 14, an exit light-transmitting portion 15, a first reflective light-transmitting portion 161, and a second reflective light-transmitting portion 162 are located at the axial ends of the first channel 171 and the second channel 172, respectively.

[0070] When the first direction X and the second direction Y are perpendicular to each other, the first channel 171 and the second channel 172 can intersect perpendicularly and be connected.

[0071] Optionally, the middle section of the first channel 171 and the middle section of the second channel 172 intersect and overlap.

[0072] The first channel 171 and the second channel 172 can be through channels that pass through the body 17 at both ends, or they can be closed channels that extend to the corresponding light-transmitting parts at both ends.

[0073] In this embodiment of the application, by setting an intersecting first channel 171 and second channel 172 within the body 17, it is not only convenient to form a gas chamber 11 within the body 17, but also convenient to determine the positions of the incident light-transmitting part 14, the exit light-transmitting part 15, the first reflective light-transmitting part 161, and the second reflective light-transmitting part 162.

[0074] In some embodiments, the temperature control component 30 may include a heating element 31, which is attached to the outer surface of the body 17 on one side along the third direction Z.

[0075] Optionally, the third direction Z can be parallel to the vertical direction, and the heating element 31 can be attached to the bottom surface of the body 17.

[0076] The temperature control assembly 30 may further include a temperature-sensitive switch 32 and a temperature control device. The temperature-sensitive switch 32 is used to disconnect the circuit of the heating element 31 after the temperature in the gas chamber 11 has been heated to a certain level, thereby controlling the heating element 31 to stop heating. The temperature control device is used to provide control circuitry for heating the heating element 31. Optionally, the temperature control device may be located on a movable circuit board 33.

[0077] In some embodiments, the gas pool 10 includes a body 17, and a gas chamber 11 is formed inside the body 17. The body 17 has a plurality of through holes 173, each through hole 173 communicating with the gas chamber 11 and the outside of the body 17. Each through hole 173 is provided with a light-transmitting element and a fixing element 18. The light-transmitting element covers the through hole 173 to form a light-transmitting portion. The fixing element 18 is detachably connected to the body 17 and abuts against the edge of the light-transmitting element surrounding the through hole 173 from the outside of the body 17 inwards. The fixing element 18 has a hollow portion disposed opposite to the through hole 173.

[0078] The first channel 171 can penetrate the body 17 along the first direction X, and a through hole 173 is formed at each of the two opposite ends of the first channel 171 along the first direction X. The second channel 172 can penetrate the body 17 along the second direction Y, and a through hole 173 is formed at each of the two opposite ends of the second channel 172 along the second direction Y.

[0079] The light-transmitting element can block the through-hole 173, thereby forming a closed gas chamber 11 within the body 17. The shape of the light-transmitting element can match the shape of the through-hole 173.

[0080] The light-transmitting element can be made of glass, plastic, or other light-transmitting materials. The light-transmitting element can be a circular sheet.

[0081] The fastener 18 can press the light-transmitting element into the through hole 173, realizing a detachable connection between the light-transmitting element and the body 17, which facilitates the replacement and cleaning of the light-transmitting element.

[0082] The detachable connection methods between the fastener 18 and the body 17 include, but are not limited to, screw connection, snap-fit ​​connection, and form-fit connection.

[0083] The hollow part of the fastener 18 will not block the light and will not affect the light path transmission on both the inner and outer sides of the light-transmitting part.

[0084] The fastener 18 may be annular, with the hollow portion defined in the middle of the fastener 18.

[0085] The peripheral wall of the through hole 173 may be provided with a stepped portion, and the light-transmitting element is disposed on the stepped portion.

[0086] A sealing element 19 may be provided between the light-transmitting element and the through hole 173 to improve the sealing effect between the light-transmitting element and the body 17. The sealing element 19 may be an annular sealing gasket with the same outer diameter as the outer diameter of the stepped portion, and the material may be rubber, silicone, elastic metal, or PTFE, etc.

[0087] In some alternative embodiments, the light-transmitting portion may also be integrally formed with the body 17. Exemplarily, at least a portion of the body 17 is configured to transmit light, forming the light-transmitting portion.

[0088] In some embodiments, refer to Figure 5 and Figure 6 The mounting connector 21 includes a guide groove 211 extending along the first direction X, the guide groove 211 being used for the slide rail 61 of the base 60 to be inserted into. Figure 8 This is a schematic diagram of the slide rail that cooperates with the gas flow device provided in the embodiments of this application. The locking mechanism 22 is configured to selectively lock or release the mounting connector 21 and the slide rail 61 along a first direction X. In the locked state, the locking mechanism 22 restricts the movement of the mounting connector 21 relative to the slide rail 61 along the first direction X, and in the released state, the mounting connector 21 can move relative to the slide rail 61 along the first direction X.

[0089] The guide groove 211 and the slide rail 61 are matched in shape so that the guide groove 211 and the slide rail 61 can only move relative to each other in the first direction X.

[0090] For example, the guide groove 211 and the slide rail 61 can be dovetail-shaped along a cross section perpendicular to the first direction X to limit relative movement between them in directions other than the first direction X.

[0091] The slide rail 61 is slidably inserted into the guide groove 211, realizing the sliding connection between the mounting connector 21 and the base 60. The mounting connector 21 can be slidably installed onto the base 60, and the mounting connector 21 can also be slidably removed from the base 60, improving the convenience of disassembly and assembly of the gas pool 10.

[0092] In some embodiments, the locking mechanism 22 includes a first locking component 221 and a second locking component 222. The first locking component 221 is configured to be detachably connected to the slide rail 61 along the second direction Y, and the second locking component 222 is configured to be detachably connected to the slide rail 61 along the third direction Z, wherein the first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0093] The first locking component 221 and the second locking component 222 are set independently of each other.

[0094] Optionally, both the first direction X and the second direction Y can be parallel to the horizontal direction to facilitate the sliding and support of the mounting connector 21. Correspondingly, the third direction Z is parallel to the vertical direction.

[0095] The first locking assembly 221 and the second locking assembly 222 are detachably connected to the slide rail 61 in two different directions perpendicular to the first direction X. In the locked state, the first locking assembly 221 and the second locking assembly 222 can limit the mounting connector 21 and the slide rail 61 from two different directions, improving the installation stability of the gas pool 10 in the locked state. Furthermore, if the limiting in either the second direction Y or the third direction Z fails, the locking state can be maintained by limiting in the other direction, improving the installation reliability of the gas pool 10.

[0096] In some embodiments, the mounting connector 21 includes a first limiting groove 212 extending along a second direction Y, the first end 2121 of the first limiting groove 212 communicating with a guide groove 211 along the second direction Y. The first locking assembly 221 includes a first limiting member 2211 movably disposed in the first limiting groove 212 along the second direction Y. In the locked state, the first limiting member 2211 extends at least partially out of the first limiting groove 212 and protrudes into the interior of the guide groove 211. In the released state, the first limiting member 2211 is located inside the first limiting groove 212.

[0097] In the locked state, the first limiting member 2211 extends out of the first limiting groove 212 and guides the protruding portion inside the guide groove 211 to cooperate with the limiting structure of the slide rail 61, thereby restricting the movement of the mounting connector 21 relative to the slide rail 61 along the first direction X. In the released state, the first limiting member 2211 is entirely inside the first limiting groove 212 and does not cooperate with the slide rail 61 located in the guide groove 211, therefore it does not limit the movement of the mounting connector 21.

[0098] Optionally, the first limiting member 2211 can be a sphere to reduce the frictional resistance between it and the slide rail 61. For example, the first limiting member 2211 can be a steel ball. Correspondingly, the limiting structure on the slide rail 61 can be a first limiting hole 611.

[0099] Optionally, the first limiting groove 212 can be a through groove, and the second end of the first limiting groove 212, which is opposite to the first end along the second direction, is connected to the outside of the mounting connector 21.

[0100] Optionally, the first limiting groove 212 can also be a blind groove, with its first end 2121 connected to the guide groove 211, and its second end 2122, which is opposite to the first end 2121, closed along the second direction Y.

[0101] The power for the first limiting member 2211 to move along the second direction Y can come from the mechanical movement of other components or from an electronically controlled drive device.

[0102] In some embodiments, the first locking assembly 221 further includes a first elastic member 2212, which is disposed in the first limiting groove 212 along the second direction Y. One end of the first elastic member 2212 abuts against the first limiting member 2211, and the other end abuts against the first axial limiting portion, which is fixed relative to the first limiting groove 212 along the second direction Y. That is, the first axial limiting portion can limit the other end of the first elastic member 2212 along the axial direction of the first limiting groove 212.

[0103] When the first limiting groove 212 is a through groove, the first axial limiting part can be fixedly connected to the first limiting groove 212. When the first limiting groove 212 is a blind groove, the first axial limiting part can be the bottom wall of the first limiting groove 212.

[0104] The first elastic member 2212 can elastically deform along the second direction Y, thereby selectively pressing or being pressed by the first limiting member 2211 along the second direction Y. In the locked state, the first elastic member 2212 releases its elastic potential energy and presses the first limiting member 2211 along the second direction Y, and the first limiting member 2211 is engaged and held in the first limiting hole 611. In the released state, the first limiting member 2211 abuts against the side wall of the slide rail 61. Under the abutment action of the slide rail side wall, the first limiting member 2211 retracts into the first limiting groove 212 and presses the first elastic member 2212, and the first elastic member 2212 accumulates elastic potential energy so that it can release its elastic potential energy after the first limiting member 2211 and the first limiting hole 611 are aligned again.

[0105] The first elastic element 2212 can be a spring.

[0106] In some embodiments, the second end 2122 of the first limiting groove 212 along the second direction Y communicates with the outside of the mounting connector 21, and the second end 2122 is disposed opposite to the first end 2121. That is, the first limiting groove 212 is a through groove. The first axial limiting part includes a connector 2213, which is inserted into the first limiting groove 212 from the second end 2122 and threadedly connected to the first limiting groove 212.

[0107] The connector 2213 can be a self-tapping screw, threaded rod, etc.

[0108] In this embodiment, the first limiting groove 212 is configured as a through groove, which allows the first limiting member 2211 and the first elastic member 2212 to be installed into the first limiting groove 212 from the outside of the mounting connector 21. Then, the connector 2213 can be connected to the first limiting groove 212, making the operation simple.

[0109] In some embodiments, the guide groove 211 may be formed in the middle of the mounting connector 21 along the second direction Y. The number of first locking components 221 may be multiple, with multiple first locking components 221 distributed on both sides of the guide groove 211 along the second direction Y, to limit the mounting connector 21 at multiple locations, thereby improving its installation stability.

[0110] In some embodiments, the second locking component 222 includes a second limiting hole 2221, which is a blind hole disposed along the third direction Z, and the second limiting hole 2221 is connected to the guide groove 211.

[0111] The opening of the second limiting hole 2221 faces the guide groove 211. When the mounting connector 21 is slidably connected to the slide rail 61, the corresponding limiting structure on the slide rail 61 can be inserted into the second limiting hole 2221 along the third direction Z, thereby restricting the movement of the mounting connector 21 relative to the slide rail 61 along the first direction X.

[0112] Figure 9 This is an exploded structural diagram of a gas flow device provided in another embodiment of this application. (Refer to...) Figure 5 and Figure 9 In some embodiments, the gas flow device 1 may include the aforementioned base 60. The base 60 includes a slide rail 61 extending along a first direction X, and the slide rail 61 includes a second limiting groove 612 extending along a third direction Z. The second locking assembly 222 further includes a second limiting member 2222, which is movably disposed in the second limiting groove 612 along the third direction Z. In the locked state, the second limiting member 2222 at least partially extends out of the second limiting groove 612 and is inserted into the second limiting hole 2221. In the released state, the second limiting member 2222 is located inside the second limiting groove 612.

[0113] In the locked state, the second limiting member 2222 extends out of the second limiting groove 612 and guides the protruding portion inside the guide slide groove 211 to engage with the second limiting hole 2221, thereby restricting the movement of the mounting connector 21 relative to the slide rail 61 along the first direction X. In the released state, the second limiting member 2222 is entirely inside the second limiting groove 612 and does not engage with the mounting connector 21, therefore it does not limit the movement of the mounting connector 21.

[0114] Optionally, the second limiting member 2222 can be a limiting screw, a ball, etc.

[0115] In some embodiments, the second limiting groove 612 may be a blind groove. The second locking assembly 222 further includes a second elastic member disposed in the second limiting groove 612 along a third direction Z. One end of the second elastic member abuts against the second limiting member 2222, and the other end abuts against the bottom of the second limiting groove 612. The bottom of the second limiting groove 612 can axially limit the second elastic member.

[0116] Optionally, the third direction Z can be parallel to the vertical direction. The second limiting groove 612 is open at the top of the slide rail 61. The bottom of the second limiting groove 612 is closed to facilitate the direct installation of the second limiting member 2222 and the second elastic member.

[0117] The second elastic element can undergo elastic deformation along the third direction Z, thereby selectively pressing against or being pressed down by the second limiting element 2222. In the locked state, the second elastic element releases its elastic potential energy and presses against the second limiting element 2222 along the third direction Z, causing the second limiting element 2222 to engage and remain in the second limiting hole 2221. In the released state, the second limiting element 2222 abuts against the groove wall of the guide groove 211. Under the abutment of the groove wall, the second limiting element 2222 retracts into the second limiting groove 612 and squeezes the second elastic element, accumulating elastic potential energy so that it can be released after the second limiting element 2222 and the second limiting hole 2221 are aligned again.

[0118] The second elastic element can be a spring.

[0119] In some embodiments, refer to Figure 1 The gas flow device 1 also includes an adjustment mechanism 40, which is configured to be movable along a first direction X, a second direction Y, and a third direction Z to adjust the angle of the optical device used with the gas flow device 1 relative to the light-transmitting part. The first direction X, the second direction Y, and the third direction Z are all perpendicular to each other.

[0120] The optical device used in conjunction with the gas flow device 1 may include at least one of a light-emitting device, a reflective device, and a spectral collection device.

[0121] Optionally, the adjustment mechanism 40 can adjust the reflection angle of the reflection device used in conjunction with the reflective light-transmitting part to better focus the fluorescence signal and improve the signal intensity.

[0122] This embodiment of the application, by setting an adjustment mechanism 40 in the gas flow device 1, allows for precise adjustment of the optical path of the entire gas detection device in three directions after the gas flow device 1 is installed. This is beneficial for improving detection accuracy and solves the drawback of the optical path being unadjustable after the gas pool is installed in the prior art.

[0123] Optionally, the adjustment mechanism 40 may include a main support 41, an auxiliary support 42, and an adjustment panel 43. The adjustment panel 43 is provided with an adjustment hole, and the adjustment hole is provided with an adjustment operation part 431. The adjustment operation part 431 is connected to the main support 41 to adjust the position and angle of the main support 41.

[0124] The adjustment mechanism 40 is located on one side of the gas pool 10 along the first direction X. The adjustment panel 43 can be located on the side of the main support 41 and auxiliary support 42 away from the gas pool 10 along the first direction X. This side has a larger space, which facilitates the user's adjustment operation. A handle 44 can be provided on the side of the adjustment panel 43 away from the gas pool 10, so that the entire gas flow device 1 can be moved along the first direction X by pushing and pulling the handle 44, which facilitates the overall assembly and disassembly of the gas flow device 1.

[0125] In some embodiments, the gas flow device 1 further includes a temperature control component 30 and a support component 70. The temperature control component 30 is thermally connected to the gas chamber 11 to regulate the temperature inside the gas chamber 11. The gas pool 10, the temperature control component 30, and the regulating mechanism 40 are all supported on the support component 70, which is connected to the mounting connector 21.

[0126] The support assembly 70 includes a support base plate 71, a gas pool 10, and an adjustment mechanism 40, which are supported on the support base plate 71 at intervals along a first direction X. The heating element 31 of the temperature control assembly 30 can be disposed between the gas pool 10 and the support base plate 71 to conceal the heating element 31, improve safety, and facilitate the concentrated transfer of heat generated by the heating element 31 to the gas chamber 11 within the gas pool 10, reducing heat dissipation. The adjustment panel 43 of the adjustment mechanism 40 is connected to the support base plate 71, thereby facilitating the assembly and disassembly of the support base plate 71 and the components supported on it.

[0127] The support assembly 70 also includes a support base 72, which is disposed on the support base plate 71 and is used to support the gas pool 10. The heating element 31 may be disposed between the support base 72 and the gas pool 10.

[0128] The support base 72 may have a rectangular stepped groove in the middle to prevent the heating element 31 from moving and to limit its movement. Rectangular protrusions are provided on both sides of the stepped groove, with through holes and protrusions on each protrusion for limiting and fixing the gas pool 10. A rectangular flange is provided on the outer side of the rectangular protrusions, with several through holes for fixing the support base 72 to the support base plate 71.

[0129] The support base plate 71 has a three-step section arranged along the first direction X, two of which are used to fix the main bracket 41 and the auxiliary bracket 42 respectively, and the other step is used to install the neon lamp and wiring. The neon lamp can provide a calibration light source for the system.

[0130] In some embodiments, the base 60 may also include a fixed circuit board 62. When the mounting connector 21 is slidably connected to the slide rail 61, the fixed circuit board 62 may be electrically connected to the movable circuit board 33 to supply power to the movable circuit board 33, etc.

[0131] The base 60 may also include a base 63, and the fixed circuit board 62 and the slide rail 61 are fixedly connected to the base 63 by means of screws, welding or other methods.

[0132] According to a second aspect of this application, embodiments of this application also provide a gas detection device. Figure 10 This is a schematic diagram of the structure of a gas detection device provided in one embodiment of this application. The gas detection device 100 includes a plurality of optical devices 2 and a gas flow device 1 provided in any of the above embodiments. The plurality of optical devices 2 are respectively disposed opposite to a plurality of light-transmitting parts of the gas flow device 1, so as to form a plurality of optical paths for gas detection and / or analysis between the plurality of optical devices 2 and the gas chamber 11 of the gas flow device 1.

[0133] The plurality of optical devices 2 may include at least a light-emitting device and a spectral collection device. Furthermore, the plurality of optical devices 2 may also include a reflective device.

[0134] The gas detection device 100 provided in this application embodiment can not only realize the basic function of gas detection, but also realize the quick disassembly and assembly of the gas pool 10 through the state switching (locked state and released state) of the locking mechanism 22, which improves the convenience of disassembly and assembly of the gas pool 10, facilitates the replacement, maintenance and cleaning of the gas pool 10, and meets the needs of practical application of the gas pool 10.

[0135] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gas flow device, characterized in that, include: A gas pool includes a gas chamber, an inlet path and an outlet path communicating with the gas chamber, and a plurality of light-transmitting parts surrounding the gas chamber. Each of the light-transmitting parts forms part of the cavity wall surrounding the gas chamber, so as to allow light to enter and exit the gas chamber through the light-transmitting parts. as well as The mounting assembly includes a mounting connector and a locking mechanism, wherein the gas pool is connected to the mounting connector, and the locking mechanism is configured to selectively lock the mounting connector to a base or release the locking connection between the mounting connector and the base. The plurality of light-transmitting parts include an incident light-transmitting part, an exit light-transmitting part, a first reflective light-transmitting part, and a second reflective light-transmitting part. The incident light-transmitting part, the exit light-transmitting part, the first reflective light-transmitting part, and the second reflective light-transmitting part are arranged opposite to each other along a first direction and a second direction. The reflective light-transmitting part is configured to allow light inside the gas chamber to exit to a reflecting device and be reflected by the reflecting device before entering the gas chamber. The reflective light-transmitting part allows the reflecting device to reflect focused fluorescence signals. The mounting connector includes a guide groove extending along a first direction, the guide groove being used for the slide rail of the base to be inserted into it; The locking mechanism is configured to selectively lock or release the mounting connector and the slide rail along the first direction. In the locked state, the locking mechanism restricts the movement of the mounting connector relative to the slide rail along the first direction. In the released state, the mounting connector is able to move relative to the slide rail along the first direction. The gas flow device further includes an adjustment mechanism, which is configured to be movable along the first direction, the second direction and the third direction to adjust the reflection angle of the reflective device used in conjunction with the gas flow device relative to the reflective light-transmitting part, wherein the first direction, the second direction and the third direction are perpendicular to each other. The gas flow device further includes a support assembly connected to the mounting connector. The support assembly includes a support base plate, and the gas pool and the adjustment mechanism are supported on the support base plate at intervals along the first direction.

2. The gas flow device according to claim 1, characterized in that, The air inlet path and the air outlet path are connected to the gas chamber on one side of the gas chamber along the third direction; The gas flow device further includes a temperature control component, which is thermally connected to the gas chamber on the other side of the gas chamber along the third direction to regulate the temperature inside the gas chamber.

3. The gas flow device according to claim 2, characterized in that, The gas pool includes a body, the interior of which defines a first channel and a second channel. The first channel extends along a first direction, and the second channel extends along a second direction. The first channel and the second channel intersect and communicate with each other to form the gas chamber. The incident light-transmitting part, the exit light-transmitting part, the first reflective light-transmitting part, and the second reflective light-transmitting part are located at the axial ends of the first channel and the second channel, respectively.

4. The gas flow device according to claim 1, characterized in that, The locking mechanism includes a first locking component and a second locking component; The first locking assembly is configured to be detachably connected to the slide rail along the second direction, and the second locking assembly is configured to be detachably connected to the slide rail along the third direction.

5. The gas flow device according to claim 4, characterized in that, The mounting connector includes a first limiting groove extending along the second direction, and a first end of the first limiting groove along the second direction is connected to the guide groove; The first locking assembly includes a first limiting member and a first elastic member; The first limiting member is movably disposed in the first limiting groove along the second direction. In the locked state, the first limiting member extends at least partially out of the first limiting groove and protrudes into the interior of the guide groove. In the released state, the first limiting member is located inside the first limiting groove. The first elastic member is disposed in the first limiting groove along the second direction. One end of the first elastic member abuts against the first limiting member, and the other end abuts against the first axial limiting part. The first axial limiting part is fixed relative to the first limiting groove along the second direction.

6. The gas flow device according to claim 4, characterized in that, Also includes: The base includes the slide rail extending along the first direction, and the slide rail includes a second limiting groove extending along the third direction; The second locking assembly includes a second limiting hole and a second limiting member; the second limiting hole is a blind hole arranged along the third direction and communicates with the guide groove; the second limiting member is movably disposed in the second limiting groove along the third direction, and in the locked state, the second limiting member extends at least partially out of the second limiting groove and is inserted into the second limiting hole, and in the released state, the second limiting member is located inside the second limiting groove.

7. A gas detection device, characterized in that, It includes a plurality of optical devices and a gas flow device according to any one of claims 1-6, wherein the plurality of optical devices are respectively disposed opposite to the plurality of light-transmitting portions of the gas flow device.

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