Gas circulation device and gas detection equipment

Abstract

The invention discloses a gas circulation device and gas detection equipment. The gas circulation device comprises a gas pool, the gas pool comprises a gas chamber, a gas inlet path and a gas outlet path which are communicated with the gas chamber, and a plurality of light-transmitting parts arranged on the peripheral side of the gas chamber in a surrounding mode, and all the light-transmitting parts form a part of a cavity wall forming the gas chamber in a surrounding mode so as to allow light to enter and exit the gas chamber through the light-transmitting parts; the mounting assembly comprises a mounting connecting piece and a locking mechanism, the gas tank is connected to the mounting connecting piece, and the locking mechanism is configured to selectively lock and connect the mounting connecting piece to a base or release the locking connection between the mounting connecting piece and the base. According to the gas circulation device provided by the embodiment of the invention, the gas pool can be quickly disassembled and assembled through state switching of the locking mechanism, so that the disassembly and assembly convenience of the gas pool is improved, the position replacement, maintenance, cleaning and the like of the gas pool are facilitated, and the gas pool can be conveniently applied to practice.

Description

Technical Field

[0001] The present application belongs to the field of gas detection technology, and in particular, relates to a gas circulation device and a gas detection device. Background Art

[0002] Gas sample analysis is an important experimental link in the field of gas detection, and is widely used in gas detection, industrial process control, pollution source emission detection and other fields. In gas detection, gas cells and spectral absorption technology are usually used to analyze the gas. The gas cell has a closed space, which can effectively prevent toxic and harmful gases from leaking and polluting the environment.

[0003] However, the existing gas pools always remain at the most basic functional design, and the installation conditions of the gas pools are not considered enough, so that they cannot be widely used in practice. Summary of the invention

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

[0005] The embodiments of the present application provide a gas circulation device and a gas detection device to improve the convenience of disassembly and assembly of a gas pool, thereby facilitating practical applications.

[0006] According to the first aspect of the present application, the present application provides a gas circulation device, which includes: a gas pool, including a gas chamber, an air inlet path and an air outlet path connected to the gas chamber, and a plurality of light-transmitting portions arranged around the gas chamber, each of the light-transmitting portions forming a part of the cavity wall surrounding the gas chamber to allow light to enter and exit the gas chamber through the light-transmitting portions; 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 multiple light-transmitting parts include an incident light-transmitting part, an exiting light-transmitting part, a first reflective light-transmitting part and a second reflective light-transmitting part, and the incident light-transmitting part, the exiting light-transmitting part, the first reflective light-transmitting part and the second reflective light-transmitting part are arranged opposite to each other in a first direction and a second direction, and the first direction and the second direction intersect.

[0008] Optionally, 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, and the first direction, the second direction and the third direction are perpendicular to each other; the gas circulation device also 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 adjust the temperature inside the gas chamber.

[0009] Optionally, the gas pool includes a main body, the interior of the main body defines a first channel and a second channel, the first channel extends along a first direction, the second channel extends along a second direction, the first channel and the second channel intersect and are connected to form a gas chamber; the incident light-transmitting portion, the exit light-transmitting portion, the first reflective light-transmitting portion and the second reflective light-transmitting portion 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, and the guide groove is used for the 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. In the locked state, the locking mechanism limits the movement of the mounting connector along the first direction relative to the slide rail, and in the released state, the mounting connector can move along the first direction relative to the slide rail.

[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 the second direction, and the second locking component is configured to be detachably connected to the slide rail along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0012] Optionally, the mounting connection member includes a first limit groove extending along the second direction, and the first end of the first limit groove along the second direction is connected to the guide groove; the first locking assembly includes a first limit member and a first elastic member, and the first limit member is movably arranged in the first limit groove along the second direction, and in a locked state, the first limit member at least partially extends out of the first limit groove and protrudes toward the interior of the guide groove, and in a released state, the first limit member is located inside the first limit groove; the first elastic member is arranged in the first limit groove along the second direction, one end of the first elastic member abuts against the first limit member, and the other end abuts against the first axial limit portion, and the first axial limit portion is fixed relative to the first limit groove along the second direction.

[0013] Optionally, the gas circulation device also includes: a base, the base includes a slide rail extending along the first direction, the slide rail includes a second limit groove extending along a third direction; the second locking assembly includes a second limit hole and a second limit member, the second limit hole is a blind hole arranged along the third direction, and the second limit hole is connected to the guide groove; the second limit member is movably arranged in the second limit groove along the third direction, in the locked state, the second limit member at least partially extends out of the second limit groove and is inserted into the second limit hole, and in the released state, the second limit member is inside the second limit groove.

[0014] Optionally, the gas circulation device also includes: an adjustment mechanism, which is configured to be movably arranged along the first direction, the second direction and the third direction to adjust the angle of the optical device used in conjunction with the gas circulation device relative to the light-transmitting part; the first direction, the second direction and the third direction are perpendicular to each other.

[0015] According to the second aspect of the present application, an embodiment of the present application also provides a gas detection device, which includes multiple optical devices and a gas circulation device provided by any of the above embodiments, and the multiple optical devices are respectively arranged opposite to the multiple light-transmitting parts of the gas circulation device.

[0016] The gas circulation device provided in the embodiment of the present application includes a gas pool and a mounting assembly. The gas pool includes a gas chamber, an air inlet path, an air outlet path and a plurality of light-transmitting portions. The target gas to be measured can enter the gas chamber through the air inlet path and flow out through the air outlet path. The plurality of light-transmitting portions are arranged around the periphery of the gas chamber and form a part of the cavity wall of the gas chamber. Light can enter and exit the gas chamber through the light-transmitting portions, thereby providing a structural basis for observing and / or detecting the target gas to be measured inside the gas chamber using an optical device, so as to realize the basic function of gas detection. The mounting assembly includes a mounting connector and a locking mechanism. The gas pool is connected to the mounting connector. The locking mechanism can lock the mounting connector to a base, which is conducive to the rapid installation of the gas pool. The locking mechanism can also release the locking connection between the mounting connector and the base, which is conducive to the rapid disassembly of the gas pool. The gas circulation device provided in the embodiment of the present application can realize the rapid disassembly and assembly of the gas pool by switching the state of the locking mechanism (locked state and released state), thereby improving the convenience of disassembly and assembly of the gas pool, and facilitating the position replacement, maintenance, cleaning, etc. of the gas pool, thereby facilitating the practical application of the gas pool.

[0017] The gas circulation device provided in the embodiment of the present application is also provided with an installation connector connected to the gas pool. The gas pool is disassembled and assembled by the installation connector, which not only provides stable support 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. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments of the present application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the structure of a gas circulation device provided in one embodiment of the present application.

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

[0021] Figure 3 yes Figure 1 A schematic diagram of the cross-sectional structure of a gas pool of the gas circulation device shown in one direction.

[0022] Figure 4 yes Figure 1 A schematic diagram of the cross-sectional structure of the gas pool of the gas circulation device shown in FIG.

[0023] Figure 5 yes Figure 1 The schematic diagram of the cross-sectional structure of the installation assembly of the gas circulation device and its related structures along one direction is shown.

[0024] Figure 6 yes Figure 1 The schematic diagram of the cross-sectional structure of the installation assembly of the gas circulation device and its related structures along another direction is shown.

[0025] Figure 7 yes Figure 1 A schematic diagram of the cross-sectional structure of the gas circulation device shown.

[0026] Figure 8 It is a schematic diagram of the structure of a slide rail that cooperates with the gas circulation device provided in an embodiment of the present application.

[0027] Fig. 9 It is a schematic diagram of the exploded structure of a gas circulation device provided in another embodiment of the present application.

[0028] Fig.10 It is a schematic diagram of the structure of a gas detection device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0029] The features and exemplary embodiments of various aspects of the application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the application. However, it is obvious to those skilled in the art that the application can be implemented when some details in these specific details are not needed. The following description of the embodiments is only to provide a better understanding of the application by illustrating the example of the application.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0031] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise clearly and specifically defined.

[0032] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0033] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that there may be three relationships. For example, m and / or n can represent: m exists alone, m and n exist at the same time, and n exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0034] In the description of the embodiments of the present application, the term "plurality" refers to more than two (including two).

[0035] In the description of the embodiments of the present application, the orientations or positional relationships indicated by technical terms such as "vertical", "horizontal", "top", "bottom", "inside", "outside", and "circumferential" are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the embodiments of the present application.

[0036] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0037] In the embodiments of the present application, "parallel" includes not only the absolutely parallel situation, but also the roughly parallel situation conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the absolutely perpendicular situation, but also the roughly perpendicular situation conventionally recognized 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, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0039] Figure 1 Schematic diagram of the structure of a gas circulation device provided by an embodiment of the present application. Figure 1 The gas circulation device 1 provided in the embodiment of the present application includes a gas pool 10 and a mounting assembly 20.

[0040] Figure 2 yes Figure 1 A schematic diagram of the structure of the gas pool of the gas circulation device shown in FIG. Figure 3 yes Figure 1 The schematic diagram of the cross-sectional structure of the gas pool of the gas circulation device shown in FIG. Figure 4 yes Figure 1 The schematic diagram of the cross-sectional structure of the gas pool of the gas circulation device shown in FIG. Figures 2 to 4 The gas pool 10 includes a gas chamber 11, an air inlet path 12 and an air outlet path 13 connected to the gas chamber 11, and a plurality of light-transmitting portions arranged around the gas chamber 11, each of which forms a part of the wall surrounding the gas chamber 11 to allow light to enter and exit the gas chamber 11 through the light-transmitting portion.

[0041] Figure 5 yes Figure 1 The schematic diagram of the cross-sectional structure of the installation assembly of the gas circulation device and its related structures along one direction is shown. Figure 6 yes Figure 1 The schematic cross-sectional structure diagram of the installation assembly and related structures of the gas circulation device shown in FIG. The installation 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] The gas chamber 11 is a closed chamber to prevent gas from overflowing and causing harm.

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

[0044] The light-transmitting portion can allow light to pass therethrough. Exemplarily, the light-transmitting portion can be transparent glass, plastic, or the like.

[0045] The cavity wall of the gas cavity 11 encloses the gas cavity 11 , each light-transmitting portion forms a part of the cavity wall, and the positions of the plurality of light-transmitting portions do not overlap.

[0046] The gas pool 10 may be directly connected to the installation connector 21 or indirectly connected to the installation connector 21 via an intermediate connector.

[0047] The gas pool 10 can be fixedly arranged relative to the installation connector 21 so as to be assembled and disassembled synchronously with the installation connector 21 .

[0048] The locking mechanism 22 has a locking state and a release state. In the locking state, the installation connector 21 is relatively fixed to the base and does not produce relative displacement, so that the gas pool 10 and the installation connector 21 are easily installed and fixed on the base. In the release state, the locking effect between the installation connector 21 and the base is released, and the installation connector 21 can move relative to the base, so that the gas pool 10 and the installation connector 21 are easily removed from the base.

[0049] The gas circulation device 1 provided in the embodiment of the present application includes a gas pool 10 and a mounting assembly 20. The gas pool 10 includes a gas chamber 11, an air inlet path 12, an air outlet path 13 and a plurality of light-transmitting portions. The target gas to be measured can enter the gas chamber 11 through the air inlet path 12 and flow out through the air outlet path 13. The plurality of light-transmitting portions are arranged around the periphery of the gas chamber 11 and form a part of the cavity wall of the gas chamber 11. Light can enter and exit the gas chamber 11 through the light-transmitting portions, thereby providing a structural basis for observing and / or detecting the target gas to be measured inside the gas chamber 11 using an optical device, so as to realize 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, which is conducive to 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, which is conducive to the rapid disassembly of the gas pool 10. The gas circulation device 1 provided in the embodiment of the present application can realize the rapid disassembly and assembly of the gas pool 10 by switching the state of the locking mechanism 22 (locked state and released state), thereby improving the convenience of disassembly and assembly of the gas pool 10, facilitating the position replacement, maintenance, cleaning, etc. of the gas pool 10, and meeting the practical application requirements of the gas pool 10.

[0050] The gas circulation device 1 provided in the embodiment of the present application is also provided with an installation connector 21 connected to the gas pool 10. The gas pool 10 is assembled and disassembled by the installation connector 21, which not only provides stable support for the gas pool 10, but also during the assembly and disassembly 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 reflecting 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 reflecting light-transmitting portion is configured to allow light inside the gas chamber 11 to exit to the reflecting device and enter the gas chamber 11 after being reflected by the reflecting device.

[0052] The incident light-transmitting portion 14 is used to cooperate with a light-emitting device that emits incident light. The outgoing light-transmitting portion 15 is used to cooperate with a spectrum collecting device that collects light. The reflective light-transmitting portion is used to cooperate with a reflective device that can reflect radiated light.

[0053] Optionally, the incident light-transmitting portion 14 and the light-emitting device, the emitting light-transmitting portion 15 and the spectrum collecting device, and the reflecting light-transmitting portion and the reflecting device are all arranged opposite to each other.

[0054] Exemplarily, the light emitting device may be a laser device, and the laser emitted by the laser device is irradiated to the gas chamber 11 through the incident light-transmitting portion 14, exciting the gas in the gas chamber 11 to generate a scattered fluorescence signal. The reflective light-transmitting portion allows the emitting device to reflect the focused fluorescence signal. The output light-transmitting portion 15 allows the focused fluorescence signal to be emitted, so that the spectrum collection device can collect the fluorescence signal. The gas in the gas chamber 11 can be detected and / or analyzed through the collected fluorescence signal.

[0055] The structures of the incident light-transmitting portion 14 , the emitting light-transmitting portion 15 and the reflecting light-transmitting portion may be the same, or may be slightly different according to their functions.

[0056] In the embodiment of the present application, the gas pool 10 not only has the traditional incident light-transmitting portion 14 and the exit light-transmitting portion 15, but also has at least one reflective light-transmitting portion, which is beneficial to the emission and focusing of the fluorescent signal, thereby facilitating the enhancement of the 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, and 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 in 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 may intersect perpendicularly. At this time, the incident light-transmitting portion 14, the emitting light-transmitting portion 15, the first reflective light-transmitting portion 161 and the second reflective light-transmitting portion 162 are respectively located in four directions perpendicular to each other, and have little mutual influence.

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

[0060] The embodiment of the present application provides two reflective light-transmitting parts, which can focus and reflect the light signal in two directions, further improving the signal strength. The two reflective light-transmitting parts and the incident light-transmitting part 14 and the outgoing light-transmitting part 15 are arranged opposite to each other in pairs, the optical path design is reasonable, and the light-transmitting parts are not crowded or sparse, and the position design of each light-transmitting part and the number of reflective light-transmitting parts are relatively reasonable.

[0061] Figure 7 yes Figure 1 The cross-sectional structure diagram of the gas circulation device shown in FIG. Figures 1 to 7 In some embodiments, the inlet path 12 and the outlet path 13 are connected to the gas chamber 11 at one side of the gas chamber 11 along the third direction Z, and the first direction X, the second direction Y and the third direction Z are perpendicular to each other. The gas circulation device 1 further includes a temperature control component 30, which is thermally connected to the gas chamber 11 at the other side of the gas chamber 11 along the third direction Z to adjust the temperature inside the gas chamber 11.

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

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

[0064] The temperature control assembly 30 may be located entirely on the other side of the gas chamber 11 along the third direction Z so as to be thermally connected to the gas chamber 11 .

[0065] Optionally, the first direction X and the second direction Y are 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 may 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 rising hot air, the heat transferred from the temperature control component 30 to the bottom of the gas chamber 11 can be naturally dissipated to the top of the gas chamber 11, which is conducive to the temperature balance in the gas chamber 11.

[0066] The temperature control component 30 is thermally connected to the gas chamber 11, which 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 the embodiment of the present application, 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 the plurality of light-transmitting portions 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 structures, the optical path structure, and the temperature control structure of the gas chamber 11 are separated from each other and do not affect each other, thereby 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 measured and preventing the problem that the light-transmitting part is fogged due to the target gas temperature being too low and thus affecting the light path transmission.

[0069] In some embodiments, the gas pool 10 includes a body 17, the interior of the body 17 defines a first channel 171 and a second channel 172, the first channel 171 extends along a first direction X, 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. The incident light-transmitting portion 14, the exiting light-transmitting portion 15, the first reflective light-transmitting portion 161 and the second reflective light-transmitting portion 162 are respectively located at the axial ends of the first channel 171 and the second channel 172.

[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 may perpendicularly intersect and communicate with each other.

[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 may be through channels with both ends penetrating the body 17 , or may be closed channels with both ends extending to corresponding light-transmitting portions, respectively.

[0073] The embodiment of the present application provides an intersecting first channel 171 and a second channel 172 in the main body 17, which not only facilitates the formation of a gas chamber 11 in the main body 17, but also facilitates the determination of the positions of 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.

[0074] In some embodiments, the temperature control assembly 30 may include a heating plate 31 , and the heating plate 31 is attached to an outer surface of one side of the body 17 along the third direction Z.

[0075] Optionally, the third direction Z may be parallel to the vertical direction, and the heating sheet 31 may 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 plate 31 after the temperature in the gas chamber 11 is heated to a certain degree, thereby controlling the heating plate 31 to stop heating. The temperature control device is used to provide a control circuit for the heating of the heating plate 31. Optionally, the temperature control device may be provided on the movable circuit board 33.

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

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

[0079] The light-transmitting member can block the through hole 173, so as to form a closed gas chamber 11 in the body 17. The shape of the light-transmitting member can match the shape of the through hole 173.

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

[0081] The fixing member 18 can press the light-transmitting member into the through hole 173 , thereby realizing a detachable connection between the light-transmitting member and the body 17 , and facilitating replacement and cleaning of the light-transmitting member.

[0082] The detachable connection method between the fixing member 18 and the body 17 includes but is not limited to screw connection, snap connection, form-fit connection, etc.

[0083] The hollow portion of the fixing member 18 will not block the light and will not affect the light path transmission on both sides of the light-transmitting member.

[0084] The fixing member 18 may be ring-shaped, with a hollow portion defined in the middle of the fixing member 18 .

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

[0086] A seal 19 may be provided between the light-transmitting member and the through hole 173 to improve the sealing effect between the light-transmitting member and the body 17. The seal 19 may be a circular sealing gasket with the same outer diameter as the outer diameter of the step portion, and may be made of rubber, silicone, elastic metal or PTFE.

[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 light-transmitting to form the light-transmitting portion.

[0088] In some embodiments, reference Figure 5 and Figure 6 The mounting connector 21 includes a guide groove 211 extending along the first direction X, and the guide groove 211 is used for the slide rail 61 of the base 60 to be inserted therein. Figure 8 2 is a schematic diagram of the structure of the slide rail that cooperates with the gas circulation device provided in the embodiment of the present application. The locking mechanism 22 is configured to selectively lock or release the installation connector 21 and the slide rail 61 along the first direction X. In the locked state, the locking mechanism 22 restricts the installation connector 21 from moving relative to the slide rail 61 along the first direction X, and in the released state, the installation connector 21 can move relative to the slide rail 61 along the first direction X.

[0089] The shapes of the guide groove 211 and the slide rail 61 match each other, so that the guide groove 211 and the slide rail 61 can only move relative to each other along the first direction X.

[0090] Exemplarily, the guide groove 211 and the slide rail 61 may be dovetail-shaped along a cross section perpendicular to the first direction X, so as to limit relative movement of the two in directions other than the first direction X.

[0091] The slide rail 61 can be slidably inserted into the guide groove 211, realizing the sliding connection between the installation connector 21 and the base 60. The installation connector 21 can be slidably installed on the base 60, and the installation connector 21 can also be slidably removed from the base 60, thereby improving the convenience of disassembly and assembly operations 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. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

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

[0094] Optionally, the first direction X and the second direction Y may be parallel to the horizontal direction, so as to facilitate the sliding and support of the mounting connector 21. Accordingly, 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 installation connector 21 and the slide rail 61 from two different directions, respectively, thereby improving the installation stability of the gas pool 10 in the locked state. In addition, when the limit in any one of the second direction Y and the third direction Z fails, the locking state can be maintained by the limit in the other direction, thereby 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 the second direction Y, and a first end 2121 of the first limiting groove 212 along the second direction Y is connected to the guide groove 211. The first locking assembly 221 includes a first limiting member 2211, and the first limiting member 2211 is movably disposed in the first limiting groove 212 along the second direction Y. In the locked state, the first limiting member 2211 at least partially extends out of the first limiting groove 212 and protrudes toward the inside of the guide groove 211. In the released state, the first limiting member 2211 is 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 the protruding portion inside the guide groove 211 can cooperate with the limiting structure of the slide rail 61, thereby limiting the movement of the installation 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 has no cooperation with the slide rail 61 in the guide groove 211, so it will not have a limiting effect on the installation connector 21.

[0098] Optionally, the first stopper 2211 may be a spherical body to reduce the friction resistance between the first stopper 2211 and the slide rail 61. Exemplarily, the first stopper 2211 may be a steel ball. Accordingly, the stopper structure on the slide rail 61 may be a first stopper hole 611.

[0099] Optionally, the first limiting groove 212 may be a through groove, and a second end of the first limiting groove 212 opposite to the first end along the second direction is in communication with the outside of the mounting connector 21 .

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

[0101] The power for the first limiting member 2211 to move along the second direction Y may come from the mechanical movement of other components or from an electrically controlled driving 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, and the first axial limiting portion 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 portion may be fixedly connected to the first limiting groove 212. When the first limiting groove 212 is a blind groove, the first axial limiting portion may be the bottom wall of the first limiting groove 212.

[0104] The first elastic member 2212 can generate elastic deformation along the second direction Y, thereby selectively squeezing the first limiting member 2211 along the second direction Y or being squeezed by the first limiting member 2211. In the locked state, the first elastic member 2212 releases elastic potential energy, squeezing the first limiting member 2211 along the second direction Y, and the first limiting member 2211 is inserted into and retained 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 of the side wall of the slide rail, the first limiting member 2211 retracts into the first limiting groove 212 and squeezes the first elastic member 2212. The first elastic member 2212 accumulates elastic potential energy so as to release its elastic potential energy after the first limiting member 2211 is aligned with the first limiting hole 611 again.

[0105] The first elastic member 2212 may be a spring.

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

[0107] The connecting piece 2213 may be a self-tapping screw, a threaded rod, or the like.

[0108] In the embodiment of the present application, the first limiting groove 212 is configured as a through groove, so that the first limiting member 2211 and the first elastic member 2212 can be installed into the first limiting groove 212 from the outside of the installation connecting member 21, and then the connecting member 2213 can be connected to the first limiting groove 212, which is easy to operate.

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

[0110] In some embodiments, the second locking assembly 222 includes a second limiting hole 2221 , which is a blind hole arranged 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 installation connector 21 is slidably connected to the slide rail 61, the corresponding limiting structure on the slide rail 61 can be plugged into the second limiting hole 2221 along the third direction Z, thereby limiting the movement of the installation connector 21 relative to the slide rail 61 along the first direction X.

[0112] Fig. 9 Schematic diagram of the exploded structure of a gas circulation device provided by another embodiment of the present application. Figure 5 and Fig. 9 In some embodiments, the gas circulation device 1 may include the above-mentioned base 60. The base 60 includes a slide rail 61 extending along the first direction X, and the slide rail 61 includes a second limiting groove 612 extending along the third direction Z. The second locking assembly 222 also includes a second limiting member 2222, and the second limiting member 2222 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 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 the protruding portion inside the guide groove 211 can cooperate with the second limiting hole 2221, thereby limiting the movement of the installation 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 has no cooperation with the installation connector 21, so it does not have a limiting effect on the installation connector 21.

[0114] Optionally, the second limiting member 2222 may be a limiting screw, a spherical body, 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, which is disposed in the second limiting groove 612 along the 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 may 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 direct installation of the second limiting member 2222 and the second elastic member.

[0117] The second elastic member can generate elastic deformation along the third direction Z, thereby selectively pressing the second limiting member 2222 or being pressed down by the second limiting member 2222. In the locked state, the second elastic member releases elastic potential energy, presses the second limiting member 2222 along the third direction Z, and the second limiting member 2222 is inserted into and retained in the second limiting hole 2221. In the released state, the second limiting member 2222 abuts against the groove wall of the guide groove 211. Under the abutment of the groove wall, the second limiting member 2222 retracts into the second limiting groove 612 and squeezes the second elastic member. The second elastic member accumulates elastic potential energy so as to release its elastic potential energy after the second limiting member 2222 is aligned with the second limiting hole 2221 again.

[0118] The second elastic member may be a spring.

[0119] In some embodiments, reference Figure 1 The gas circulation device 1 further 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 in conjunction with the gas circulation device 1 relative to the light-transmitting portion. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0120] The optical device used in conjunction with the gas circulation device 1 may include at least one of a light emitting device, a reflection device, and a spectrum collecting device.

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

[0122] By setting an adjustment mechanism 40 in the gas circulation device 1, the embodiment of the present application can precisely adjust the optical path of the entire gas detection equipment in three directions after the gas circulation device 1 is installed, which is beneficial to improving the detection accuracy and solves the disadvantage of the prior art that the optical path cannot be adjusted after the gas pool is installed.

[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, which is connected to the main support 41 to adjust the position and angle of the main support 41.

[0124] The adjustment mechanism 40 is disposed on one side of the gas pool 10 along the first direction X, and the adjustment panel 43 can be disposed on the side of the main bracket 41 and the auxiliary bracket 42 away from the gas pool 10 along the first direction X. The side has a large space, which is convenient for the user to perform the 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 circulation device 1 can be moved along the first direction X by pushing and pulling the handle 44, which is convenient for the overall disassembly and assembly of the gas circulation device 1.

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

[0126] The support assembly 70 includes a support base plate 71, and the gas pool 10 and the adjustment mechanism 40 are supported on the support base plate 71 at intervals along the first direction X. The heating plate 31 of the temperature control assembly 30 can be arranged between the gas pool 10 and the support base plate 71 to hide the heating plate 31, improve the safety of use, and facilitate the heat generated by the heating plate 31 to be concentratedly transferred to the gas chamber 11 in the gas pool 10, thereby reducing the heat from diffusing outward. The adjustment panel 43 of the adjustment mechanism 40 is connected to the support base plate 71, so as to facilitate the disassembly and assembly of the support base plate 71 and the components supported on the support base plate 71.

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

[0128] A rectangular step groove may be provided in the middle of the support seat 72 to prevent and limit the heating plate 31. Rectangular convex blocks are provided on both sides of the step groove, and through holes and protrusions are provided on the rectangular convex blocks to limit and fix the gas pool 10. A rectangular flange is provided on the outer side of the rectangular convex block, and a plurality of through holes are provided on the rectangular flange to fix the support seat 72 on the support base plate 71.

[0129] The support base plate 71 is provided with three steps arranged along the first direction X, wherein two steps are used to fix the main support 41 and the auxiliary support 42 respectively, and the other step is used to install the neon lamp and route the wires. The neon lamp can provide a correction light source for the system.

[0130] In some embodiments, the base 60 may further 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.

[0131] The base 60 may further include a base body 63 , and the fixed circuit board 62 and the slide rail 61 are fixedly connected to the base body 63 by screw connection, welding, or the like.

[0132] According to the second aspect of the present application, an embodiment of the present application also provides a gas detection device. Fig.10 1 is a schematic diagram of the structure of a gas detection device provided by an embodiment of the present application. The gas detection device 100 includes a plurality of optical devices 2 and a gas circulation device 1 provided by any of the above embodiments, and the plurality of optical devices 2 are respectively arranged opposite to the plurality of light-transmitting parts of the gas circulation device 1 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 circulation device 1.

[0133] The plurality of optical devices 2 may include at least a light emitting device and a spectrum collecting device. Furthermore, the plurality of optical devices 2 may also include a reflecting device.

[0134] The gas detection device 100 provided in the embodiment of the present application can not only realize the basic function of gas detection, but also realize the rapid disassembly and assembly of the gas pool 10 through the state switching (locked state and released state) of the locking mechanism 22, thereby improving the convenience of disassembly and assembly of the gas pool 10, facilitating the position replacement, maintenance, cleaning, etc. of the gas pool 10, and meeting the actual application needs of the gas pool 10.

[0135] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A gas circulation device, characterized in that: include: A gas pool, comprising a gas chamber, an air inlet path and an air outlet path communicating with the gas chamber, and a plurality of light-transmitting portions arranged around the gas chamber, each of the light-transmitting portions forming a part of a cavity wall surrounding the gas chamber, so as to allow light to enter and exit the gas chamber through the light-transmitting portions; as well as The mounting assembly comprises 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.

2. The gas flow device according to claim 1, characterized in that: The multiple light-transmitting parts include an incident light-transmitting part, an exiting light-transmitting part, a first reflecting light-transmitting part and a second reflecting light-transmitting part. The incident light-transmitting part, the exiting light-transmitting part, the first reflecting light-transmitting part and the second reflecting light-transmitting part are arranged opposite to each other in a first direction and a second direction, and the first direction and the second direction intersect.

3. The gas flow device according to claim 2, characterized in that: The air inlet path and the air outlet path are connected to the gas chamber at one side of the gas chamber along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other; The gas circulation device further includes a temperature control component, which is thermally connected to the gas chamber at the other side of the gas chamber along the third direction to adjust the temperature inside the gas chamber.

4. The gas flow device according to claim 3, characterized in that: The gas pool includes a body, wherein a first channel and a second channel are defined inside the body, the first channel extends along the first direction, the second channel extends along the second direction, the first channel and the second channel intersect and communicate with each other to form the gas chamber; The incident light-transmitting portion, the emitting light-transmitting portion, the first reflective light-transmitting portion, and the second reflective light-transmitting portion are respectively located at axial ends of the first channel and the second channel.

5. The gas flow device according to claim 1, characterized in that: The mounting connector comprises a guide slot extending along a first direction, wherein the guide slot is used for inserting the slide rail of the base therein; The locking mechanism is configured to selectively lock or release the mounting connector and the slide rail along the first direction. In a locked state, the locking mechanism limits the mounting connector from moving relative to the slide rail along the first direction. In a released state, the mounting connector can move relative to the slide rail along the first direction.

6. The gas flow device according to claim 5, characterized in that: The locking mechanism comprises a first locking assembly and a second locking assembly; The first locking assembly is configured to be detachably connected to the slide rail along a second direction, and the second locking assembly is configured to be detachably connected to the slide rail along a third direction. The first direction, the second direction and the third direction are perpendicular to each other.

7. The gas flow device according to claim 6, characterized in that: The mounting connector comprises 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 at least partially extends 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 arranged 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 portion, and the first axial limiting portion is fixed relative to the first limiting groove along the second direction.

8. The gas flow device according to claim 6, 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 piece; the second limiting hole is a blind hole arranged along the third direction, and the second limiting hole is connected to the guide groove; the second limiting piece is movably arranged in the second limiting groove along the third direction, and in the locked state, the second limiting piece at least partially extends out of the second limiting groove and is inserted into the second limiting hole, and in the released state, the second limiting piece is inside the second limiting groove.

9. The gas flow device according to claim 1, characterized in that: Also includes: An adjustment mechanism is configured to be movably arranged along a first direction, a second direction, and a third direction to adjust an angle of an optical device used in conjunction with the gas circulation device relative to the light-transmitting portion; The first direction, the second direction and the third direction are perpendicular to each other.

10. A gas detection device, characterized in that: It comprises a plurality of optical devices and a gas circulation device according to any one of claims 1 to 9, wherein the plurality of optical devices are respectively arranged opposite to the plurality of light-transmitting parts of the gas circulation device.

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