Detection platform of gas metering device

Abstract

The utility model relates to the technical field of flow meter detection devices, in particular to a detection platform of a gas metering device, and the detection platform comprises a supporting table, a first ventilation pipe and a second ventilation pipe, the first ventilation pipe and the second ventilation pipe are oppositely arranged on the supporting table at intervals in the first direction; the first ventilation pipe and the second ventilation pipe jointly define a containing space used for containing a gas metering device, the first ventilation pipe is used for being connected with the inlet end of the metering flow channel, and the second ventilation pipe is used for being connected with the outlet end of the metering flow channel; one of the first ventilation pipe and the second ventilation pipe can move in the first direction relative to the other one; one end, facing the gas metering device, of at least one of the first ventilation pipe and the second ventilation pipe is provided with a positioning device used for positioning the gas metering device. The positioning device is arranged to position the gas metering device, so that the gas tightness of the end part of the gas metering device in the ventilation verification process can be ensured, and the verification result of the gas metering device is ensured to be accurate and reliable.

Description

Technical Field

[0001] The present application relates to the technical field of flow meter detection devices, and in particular to a detection platform for a gas metering device. Background Art

[0002] Gas flow meters need to be calibrated before leaving the factory. Usually, the gas flow meter needs to be placed on a test platform, and the operator visually observes and adjusts the position of the gas flow meter. After the gas flow meter is in the target position, it is clamped and then ventilation is tested.

[0003] However, due to the low accuracy of the operator's operation, the installation position of the gas flow meter may deviate, affecting the docking sealing between the gas flow meter and the ventilation pipe on the detection platform, thereby affecting the calibration results of the gas flow meter. Utility Model Content

[0004] The present application provides a detection platform for a gas metering device, which can ensure the air tightness of the end of the gas metering device during the ventilation verification process, which is conducive to ensuring that the verification results of the gas metering device are accurate and reliable.

[0005] The present application provides a detection platform for a gas metering device, wherein the gas metering device has a metering flow channel, and the detection platform includes:

[0006] Support platform;

[0007] A first vent pipe and a second vent pipe are arranged on the support platform opposite to each other and spaced apart along a first direction, and jointly define an accommodating space for accommodating the gas metering device, the first vent pipe being connected to an inlet end of the metering flow channel, and the second vent pipe being connected to an outlet end of the metering flow channel;

[0008] One of the first ventilation tube and the second ventilation tube is movable relative to the other along a first direction;

[0009] At least one of the first vent pipe and the second vent pipe is provided with a positioning device at one end facing the gas metering device for positioning the gas metering device.

[0010] In a possible implementation, in the detection platform of the gas metering device provided in the present application, the first ventilation pipe is movable along a first direction, and the positioning device is provided at an end of the second ventilation pipe facing the first ventilation pipe.

[0011] In one possible implementation, the detection platform and positioning device of the gas metering device provided in this application include:

[0012] A fixing frame, the fixing frame is fixedly arranged on the second ventilation pipe;

[0013] The positioning structure is arranged on a side of the fixing frame facing the first ventilation pipe, and is used for positioning and cooperating with the gas metering device.

[0014] In one possible implementation, the detection platform of the gas metering device provided in the present application has a positioning structure of a positioning column, and the positioning columns are multiple and arranged at intervals along the circumference of the second ventilation pipe. The positioning columns are used to position and cooperate with the first positioning holes on the first flange structure at the end of the gas metering device.

[0015] In one possible implementation, the outer diameter of the positioning column is smaller than the inner diameter of the first positioning hole, and the positioning device further includes: a positioning sleeve, which is mounted on the positioning column, and the wall thickness of the positioning sleeve is adapted to the difference between the outer diameter of the positioning column and the inner diameter of the first positioning hole.

[0016] In one possible implementation, the detection platform of the gas metering device provided in the present application, the fixing frame includes a first fixing frame and a second fixing frame, the first fixing frame is located on the lower side of the second ventilation pipe, the first fixing frame is connected to the support platform, the second fixing frame is arranged on the upper side of the second fixing frame, the second fixing frame is connected to the first fixing frame, and together surrounds the second ventilation pipe; there are multiple positioning structures, a part of the multiple positioning structures is arranged on the first fixing frame, and the other part is arranged on the second fixing frame.

[0017] In a possible implementation, the first fixing frame is provided with a first fixing hole, the second fixing frame is provided with a second fixing hole, and the first fixing frame and the second fixing frame are connected by fasteners passing through the first fixing hole and the second fixing hole.

[0018] In a possible implementation, in the detection platform of the gas metering device provided in the present application, the fixing frame and the positioning structure are integrally formed; or, the fixing frame and the positioning structure are detachably connected.

[0019] In a possible implementation, the detection platform further includes: a first mounting bracket and a second mounting bracket, the first ventilation pipe is movably disposed on the first mounting bracket, and the second ventilation pipe is fixedly disposed on the second mounting bracket.

[0020] In one possible implementation, the detection platform of the gas metering device provided in this application further includes:

[0021] A lifting platform is provided on the support platform in a liftable manner, and is used to drive the gas metering device to move up and down in the accommodating space.

[0022] The present application provides a detection platform for a gas metering device, the detection platform comprising: a support platform, a first ventilation pipe and a second ventilation pipe, the first ventilation pipe and the second ventilation pipe are arranged on the support platform opposite to and spaced apart in a first direction, and jointly define an accommodating space for accommodating the gas metering device, the first ventilation pipe is used to be connected to the inlet end of the metering flow channel, and the second ventilation pipe is used to be connected to the outlet end of the metering flow channel; one of the first ventilation pipe and the second ventilation pipe is movable relative to the other in the first direction; at least one of the first ventilation pipe and the second ventilation pipe is provided with a positioning device for positioning the gas metering device at one end facing the gas metering device. When the gas metering device needs to be tested, the gas metering device is installed in the accommodating space, and then the positioning device is used to limit the position of the gas metering device. Finally, the first vent pipe or the second vent pipe is moved so that the first vent pipe and the second vent pipe are connected to the inlet end and the outlet end of the metering flow channel respectively, so as to avoid the position of the gas metering device from being offset relative to the first vent pipe or the second vent pipe, and ensure the sealing of the two ends of the gas metering device during the ventilation calibration process, thereby ensuring that the calibration results of the gas metering device are accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0024] Figure 1 A schematic structural diagram of the detection platform of the first gas metering device provided in this application;

[0025] Figure 2 A schematic diagram of the structure of the detection platform of the second gas metering device provided in this application;

[0026] Figure 3 A schematic diagram of the structure of the gas metering device provided in an embodiment of the present application when the detection platform cooperates with the gas metering device;

[0027] Figure 4 A schematic structural diagram of the detection platform of the gas metering device provided in an embodiment of the present application when it cooperates with the gas metering device from another angle;

[0028] Figure 5 For the Figure 4 Cross-sectional view of section AA;

[0029] Figure 6 Schematic diagram of the coordination between the detection platform and the gas metering device.

[0030] Description of reference numerals:

[0031] 100-support platform;

[0032] 200-first ventilation pipe;

[0033] 300-second ventilation pipe;

[0034] 400- positioning device;

[0035] 410-fixed frame;

[0036] 411-first fixed frame;

[0037] 412-second fixed frame;

[0038] 420-positioning structure;

[0039] 430-positioning sleeve;

[0040] 500-first mounting frame;

[0041] 600-second mounting frame;

[0042] 700-lifting platform;

[0043] 800-Gas metering device;

[0044] 810-first flange structure; 820-first positioning hole.

[0045] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0046] To make the objectives, technical solutions, and advantages of this application more clear, the technical solutions in this application will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0047] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the implementation of the application described herein, for example, can be implemented in an order other than those illustrated or described herein. In the embodiments of the present application, words such as "exemplary" or "for example" are used to represent examples, illustrations or descriptions. Any embodiment or design described in this application as "exemplary" or "for example" should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a concrete way.

[0048] As mentioned in the background, gas flow meters require factory calibration. This typically involves placing the meter on a test platform, where an operator visually observes and adjusts its position. Once the meter is in the target position, the operator clamps the meter and performs a ventilation test. However, due to operator inaccuracy, the meter's installation position may deviate, affecting the seal between the meter and the ventilation tube on the test platform, and thus the calibration results.

[0049] In order to solve the technical problems raised above, the present application provides a detection platform for a gas metering device. When the gas metering device needs to be tested, the gas metering device is installed in the accommodating space, and then the position of the gas metering device is limited by a positioning device. Finally, the first vent pipe or the second vent pipe is moved so that the first vent pipe and the second vent pipe are respectively connected to the inlet and outlet ends of the metering flow channel, thereby avoiding the position of the gas metering device from being offset relative to the first vent pipe or the second vent pipe, ensuring the sealing of both ends of the gas metering device during the ventilation calibration process, and thus ensuring that the calibration results of the gas metering device are accurate and reliable.

[0050] The following specific embodiments describe in detail the technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0051] Reference Image- Figure 3 The embodiment of the present application discloses a detection platform for a gas metering device. The gas metering device 800 has a metering flow channel. The detection platform includes: a support platform 100, a first ventilation pipe 200 and a second ventilation pipe 300.

[0052] The first ventilation pipe 200 and the second ventilation pipe 300 are arranged opposite to each other and spaced apart on the support platform 100 along a first direction, and jointly define a accommodating space for accommodating the gas metering device 800. The first ventilation pipe 200 is used to be connected to the inlet end of the metering flow channel, and the second ventilation pipe 300 is used to be connected to the outlet end of the metering flow channel.

[0053] One of the first ventilation pipe 200 and the second ventilation pipe 300 is movable relative to the other along a first direction.

[0054] At least one of the first ventilation pipe 200 and the second ventilation pipe 300 is provided with a positioning device 400 at one end facing the gas metering device 800 for positioning the gas metering device 800 .

[0055] Exemplarily, the table top of the support platform 100 is arranged horizontally, and mounting brackets for mounting the first ventilation pipe 200 and the second ventilation pipe 300 are respectively provided on the support platform 100, and the first ventilation pipe 200 and the second ventilation pipe 300 are arranged relatively along the length direction of the support platform 100, wherein the first direction refers to the length direction of the support platform 100.

[0056] Exemplarily, the first ventilation tube 200 can be fixed on the support platform 100, and the second ventilation tube 300 can be slidably set on the support platform 100, or the first ventilation tube 200 can be slidably set on the support platform 100, and the second ventilation tube 300 is fixed on the support platform 100, or both the first ventilation tube 200 and the second ventilation tube 300 can be slidably set on the support platform 100, wherein the sliding direction of the first ventilation tube 200 and the second ventilation tube 300 is along the length direction of the support platform 100.

[0057] Exemplarily, the ends of the first vent pipe 200 and the second vent pipe 300 facing the gas metering device 800 are respectively set as the first clamping end and the second clamping end, and the positioning device 400 can be set only at the first clamping end or the second clamping end, or can be set on both the first clamping end and the second clamping end.

[0058] Exemplarily, the positioning device 400 may be a positioning sleeve, which is provided on the outer peripheral wall of at least one of the inlet and outlet ends of the gas metering device 800 so that the positioning sleeve can define the position of the inlet and outlet of the gas flow meter.

[0059] By adopting the above technical solution and setting a positioning device 400, when the gas metering device 800 needs to be calibrated, the gas metering device 800 is installed in the accommodating space, and then the positioning device 400 is used to limit the position of the gas metering device 800, and finally the first ventilation pipe 200 or the second ventilation pipe 300 is moved so that the first ventilation pipe 200 and the second ventilation pipe 300 are respectively connected to the inlet end and the outlet end of the metering flow channel, thereby avoiding the position of the gas metering device 800 from being offset relative to the first ventilation pipe 200 or the second ventilation pipe 300, ensuring the sealing of the two ends of the gas metering device 800 during the ventilation calibration process, thereby ensuring that the calibration results of the gas metering device 800 are accurate and reliable.

[0060] In some embodiments, the first ventilation tube 200 is movable along a first direction, and the positioning device 400 is disposed at an end of the second ventilation tube 300 facing the first ventilation tube 200 .

[0061] Exemplarily, the support platform 100 has a first mounting frame 500 , the first ventilation pipe 200 is slidably arranged on the first mounting frame 500 , and the support platform 100 has a second mounting frame 600 , the second ventilation pipe 300 is fixedly arranged on the second mounting frame 600 .

[0062] By adopting the above-mentioned technical solution, the positioning device 400 is arranged on the second ventilation pipe 300, that is, the position of the positioning device 400 relative to the support platform 100 is fixed. In this way, when the gas metering device 800 is positioned relative to the positioning device 400, the positioning effect of the gas metering device 800 can be ensured. After the gas metering device 800 is positioned, the first ventilation pipe 200 is moved so that the first ventilation pipe 200 and the second ventilation pipe 300 are respectively connected to the inlet end and the outlet end of the gas metering device 800.

[0063] In some embodiments, reference Figure 1 The positioning device 400 includes: a fixing frame 410 and a positioning structure 420.

[0064] The fixing frame 410 is fixedly mounted on the second ventilation pipe 300 . The positioning structure 420 is disposed on a side of the fixing frame 410 facing the first ventilation pipe 200 . The positioning structure 420 is positioned and matched with the gas metering device 800 .

[0065] Illustratively, the fixing bracket 410 and the second ventilation pipe 300 are integrally formed.

[0066] Exemplarily, the positioning structure 420 may include a plurality of positioning arcs, which are arranged in a circle and form a positioning sleeve, which is mounted on the outlet end of the gas metering device 800 to achieve positioning of the gas metering device 800.

[0067] By adopting the above technical solution, by setting the fixing frame 410 and the positioning structure 420, the fixing frame 410 is connected to the second ventilation pipe 300, and the positioning structure 420 is positioned and matched with the gas metering device 800, it is convenient to set the positioning device 400 on the second ventilation pipe 300.

[0068] In some embodiments, combined Figure 5 and Figure 6 The positioning structure 420 is a positioning column, which is a plurality of positioning columns arranged at intervals along the circumference of the second ventilation pipe 300. The positioning columns are used to position and cooperate with the first positioning holes 820 on the first flange structure 810 at the end of the gas metering device 800.

[0069] For example, a first flange structure 810 is provided at one end of the gas metering device 800 facing the second vent tube 300. The first flange structure 810 is provided with a plurality of first positioning holes 820 corresponding one-to-one with the positioning posts, and the positioning posts are inserted into the corresponding first positioning holes 820. The plurality of positioning posts are spaced circumferentially along the second vent tube 300. This technical solution facilitates positioning of the gas metering device 800 using the positioning structure 420.

[0070] Illustratively, the gas metering device 800 is provided with a second flange structure at one end facing the first ventilation pipe 200 , and the second flange structure is also provided with a second positioning hole.

[0071] The first flange structure 810 has a plurality of connection holes (that is, the connection holes of the flange itself), and the connection holes can serve as the first positioning holes 820 .

[0072] By adopting the above technical solution, the positioning of the gas metering device 800 is achieved by passing the positioning column through the positioning hole, thereby improving the positioning accuracy of the gas metering device 800.

[0073] In one possible implementation, combining Figure 5 and Figure 6 , the outer diameter of the positioning column is smaller than the inner diameter of the first positioning hole 820, and the positioning device may further include: a positioning sleeve 430. Specifically, the positioning sleeve 430 may be cylindrical, and the positioning sleeve 430 may be sleeved on the positioning column, and the wall thickness of the positioning sleeve 430 is adapted to the difference between the outer diameter of the positioning column and the inner diameter of the first positioning hole 820. In this way, the positioning sleeve 430 can be used to compensate for the gap between the positioning column and the first positioning hole 820 of the gas metering device 800. In this way, when the positioning column in this embodiment is positioned and matched with the first positioning hole 820 of the gas metering device 800 of different sizes, it is only necessary to adaptively replace the positioning sleeve 430, which can greatly reduce the cost of the detection platform and, at the same time, expand the scope of application of the detection platform.

[0074] Optionally, the positioning sleeve 430 may be a plastic part. This provides the positioning sleeve 430 with a certain degree of elasticity, which helps to ensure that the relative position of the positioning post and the first positioning hole 820 is fixed, thereby ensuring the airtightness of the end of the gas metering device 800 during the ventilation test. Of course, this embodiment is not limited to this, and the positioning sleeve 430 may also be a metal part or a structural member made of other materials.

[0075] In some embodiments, the fixing frame 410 includes a first fixing frame 411 and a second fixing frame 412. The first fixing frame 411 is located on the lower side of the second ventilation pipe 300, and the first fixing frame 411 is connected to the support platform 100. The second fixing frame 412 is arranged on the upper side of the second fixing frame 412. The second fixing frame 412 is connected to the first fixing frame 411 and together surrounds the second ventilation pipe 300.

[0076] There are multiple positioning structures 420 , a portion of which is disposed on the first fixing frame 411 , and another portion is disposed on the second fixing frame 412 .

[0077] Exemplarily, the first fixing frame 411 and the second fixing frame 412 are respectively the first fixing plate and the second fixing plate, the first fixing plate has a first curved surface on the side close to the second ventilation pipe 300, and the second fixing plate has a second curved surface on the side close to the second ventilation pipe 300. When the first fixing plate and the second fixing plate are connected, the first curved surface and the second curved surface clamp the second ventilation pipe 300.

[0078] Illustratively, the first fixing frame 411 is detachably connected to the support platform 100 , and the second fixing frame 412 is detachably connected to the first fixing frame 411 , so as to facilitate installation and removal of the fixing frame 410 .

[0079] By adopting the above technical solution, by setting up the first fixing frame 411 and the second fixing frame 412, it is not only convenient to install the fixing frame 410 on the support platform 100 and the second ventilation pipe 300, but also when detecting different types of gas metering devices 800, the fixing frame 410 can be disassembled and different types of positioning devices 400 can be replaced, so that the detection platform of the gas metering device 800 can detect different types of gas metering devices 800.

[0080] In some embodiments, the first fixing frame 411 is provided with a first fixing hole, the second fixing frame 412 is provided with a second fixing hole, and the fixing frame 410 further includes a fastener, which is sequentially inserted through the second fixing hole and the first fixing hole to securely connect the first fixing frame 411 and the second fixing frame 412. For example, the first fixing hole and the second fixing hole can both be threaded holes, and the fastener can be a fixing bolt; alternatively, the first fixing hole and the second fixing hole can also be pin holes, and the fastener can be a connecting pin.

[0081] By adopting the above technical solution, when it is necessary to connect the first fixing frame 411 and the second fixing frame 412, it is only necessary to place the second fixing frame 412 above the first fixing frame 411, with the first fixing hole aligned with the second fixing hole, and then use fasteners to screw into the second fixing hole and the first fixing hole in sequence. When removing the first fixing frame 411 and the second fixing frame 412, it is only necessary to screw the fasteners away from the first fixing frame 411 and the second fixing frame 412. This facilitates the installation and removal of the first fixing frame 411 and the second fixing frame 412.

[0082] In some embodiments, the fixing frame 410 and the positioning structure 420 are integrally formed; or, the fixing frame 410 and the positioning structure 420 are detachably connected.

[0083] Exemplarily, the positioning structure 420 is a positioning post, and the fixing frame 410 has a plurality of assembly holes, and the positioning post is inserted into the assembly holes.

[0084] By adopting the above technical solution, when the fixing frame 410 and the positioning structure 420 are integrally formed, the production cost of the positioning device 400 can be reduced. When the fixing frame 410 and the positioning structure 420 are detachably connected, the positioning structure 420 can be replaced, so that the positioning device 400 can position different types of gas metering devices 800.

[0085] In some embodiments, the fixing frame 410 is a plastic part; and / or the positioning structure 420 is a plastic part.

[0086] Exemplarily, the fixing frame 410 and the positioning structure 420 are integrally formed, and the positioning structure 420 is made of plastic with a certain degree of deformation capability.

[0087] By adopting the above technical solution, not only can the production cost of the positioning device 400 be reduced, but the positioning structure 420 can also be easily inserted into the first positioning hole 820 , thereby facilitating the connection between the gas metering device 800 and the positioning device 400 .

[0088] In some embodiments, the detection platform further includes: a first mounting frame 500 and a second mounting frame 600 , the first ventilation pipe 200 is movably disposed on the first mounting frame 500 , and the second ventilation pipe 300 is fixedly disposed on the second mounting frame 600 .

[0089] Exemplarily, the first mounting frame 500 is fixed on the support platform 100 , and the first mounting frame 500 has a sliding channel, and the first ventilation pipe 200 is slidably arranged in the sliding channel.

[0090] Exemplarily, the second mounting frame 600 is fixed on the support platform 100, and the second mounting frame 600 has a clamping plate. The second ventilation tube 300 is mounted on the second mounting frame 600 through the clamping plate, so that the second ventilation tube 300 can be replaced, and then the positioning device 400 can be replaced, so that the detection platform can position different types of gas metering devices 800.

[0091] By adopting the above technical solution, it is convenient to install the first ventilation pipe 200 and the second ventilation pipe 300 on the support platform 100.

[0092] In some embodiments, the detection platform further includes: a lifting platform 700 , which is movably disposed on the support platform 100 , and the lifting platform 700 can be used to drive the gas metering device 800 to move up and down in the accommodating space.

[0093] Exemplarily, the lifting platform 700 is slidably disposed on the support platform 100 along a vertical direction.

[0094] By adopting the above technical solution and setting up a lifting platform 700, when the height of the gas metering device 800 needs to be adjusted, the gas metering device 800 can be placed on the lifting platform 700, and then the height of the gas metering device 800 can be adjusted through the lifting platform 700.

[0095] In some embodiments, the detection platform further includes: a first drive component and a second drive component.

[0096] The first driving assembly is disposed on the support platform 100 , and is used to drive the first ventilation pipe 200 to move along a first direction.

[0097] The second driving assembly is disposed on the supporting platform 100 , and is used to drive the lifting platform 700 to move up and down.

[0098] Exemplarily, the first driving component is an electric push rod, which is fixed on the support platform 100 , and the telescopic end of the electric push rod is connected to the first ventilation pipe 200 .

[0099] Exemplarily, the second drive assembly includes a threaded rod and a guide rod. The threaded rod is threaded through the support platform 100 in the vertical direction, and the threaded rod extends to one end above the support platform 100 and is rotatably connected to the lifting platform 700. The guide rod slides through the support platform 100 in the vertical direction, and the guide rod is connected to the lifting platform 700. By screwing the threaded rod, the lifting platform 700 can be driven to rise and fall in the vertical direction.

[0100] By adopting the above technical solution, it is convenient to move the first ventilation pipe 200 and the lifting platform 700.

[0101] The various embodiments or implementation methods in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the various embodiments can be referenced to each other.

[0102] It should be noted that phrases such as "one embodiment," "an embodiment," "exemplary embodiments," and "some embodiments" in this specification may indicate embodiments that may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0103] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0104] It should be readily understood that “on,” “above,” and “over” in this disclosure should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0105] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be in other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application. It should be noted that the embodiments represented by "one embodiment", "embodiment", "exemplary embodiments", "some embodiments", etc. mentioned in the specification may include specific features, structures or characteristics, but not every embodiment may include such specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing specific features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly described or not.

Claims

1. A detection platform for a gas metering device, characterized in that: The gas metering device (800) has a metering flow channel, and the detection platform includes: Support platform (100); A first vent pipe (200) and a second vent pipe (300) are arranged on the support platform (100) in a first direction, facing each other and spaced apart, and jointly define an accommodation space for accommodating the gas metering device (800); the first vent pipe (200) is used to be connected to the inlet end of the metering flow channel, and the second vent pipe (300) is used to be connected to the outlet end of the metering flow channel; At least one of the first ventilation pipe (200) and the second ventilation pipe (300) is movable relative to the other along the first direction; At least one of the first ventilation pipe (200) and the second ventilation pipe (300) is provided with a positioning device (400) at one end facing the gas metering device (800) for positioning the gas metering device (800).

2. The detection platform of the gas metering device according to claim 1, characterized in that: The first ventilation pipe (200) is movable along the first direction, and the positioning device (400) is provided at an end of the second ventilation pipe (300) facing the first ventilation pipe (200).

3. The detection platform of the gas metering device according to claim 2, characterized in that: The positioning device (400) comprises: a fixing frame (410), the fixing frame (410) being fixedly disposed on the second ventilation pipe (300); A positioning structure (420) is provided on a side of the fixing frame (410) facing the first ventilation pipe (200), and the positioning structure (420) is used for positioning and cooperating with the gas metering device (800).

4. The detection platform of the gas metering device according to claim 3, characterized in that: The positioning structure (420) is a positioning column, which is arranged in a plurality of intervals along the circumference of the second ventilation pipe and is used to position and cooperate with the first positioning hole (820) on the first flange structure (810) at the end of the gas metering device (800).

5. The detection platform of the gas metering device according to claim 4, characterized in that: The outer diameter of the positioning column is smaller than the inner diameter of the first positioning hole (820), and the positioning device (400) further includes: a positioning sleeve (430), the positioning sleeve (430) is sleeved on the positioning column, and the wall thickness of the positioning sleeve (430) is adapted to the difference between the outer diameter of the positioning column and the inner diameter of the first positioning hole (820).

6. The detection platform of the gas metering device according to claim 3, characterized in that: The fixing frame (410) includes a first fixing frame (411) and a second fixing frame (412), wherein the first fixing frame (411) is located at the lower side of the second ventilation pipe (300), and the second fixing frame (412) is located at the upper side of the second fixing frame (412), and the second fixing frame (412) is connected to the first fixing frame (411) and surrounds the second ventilation pipe (300) together. There are multiple positioning structures (420), a portion of the multiple positioning structures (420) is arranged on the first fixing frame (411), and the other portion is arranged on the second fixing frame (412).

7. The detection platform of the gas metering device according to claim 6, characterized in that: The first fixing frame (411) is provided with a first fixing hole, the second fixing frame (412) is provided with a second fixing hole, and the first fixing frame (411) and the second fixing frame (412) are connected by fasteners passing through the first fixing hole and the second fixing hole.

8. The detection platform of the gas metering device according to any one of claims 3 to 5, characterized in that: The fixing frame (410) and the positioning structure (420) are integrally formed; or, the fixing frame (410) and the positioning structure (420) are detachably connected.

9. The detection platform of the gas metering device according to any one of claims 1 to 5, characterized in that: The detection platform further comprises: a first mounting frame (500) and a second mounting frame (600); the first ventilation pipe (200) is movably arranged on the first mounting frame (500); and the second ventilation pipe (300) is fixedly arranged on the second mounting frame (600).

10. The detection platform of the gas metering device according to any one of claims 1 to 5, characterized in that: The detection platform also includes: A lifting platform (700) is provided on the support platform (100) in a liftable manner, and is used to drive the gas metering device (800) to move up and down in the accommodating space.

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