A new ultrasonic metering module and meter

Abstract

The utility model discloses a novel ultrasonic wave metering module and meter, and the metering module includes the flow channel body, the flow channel body is for the gas flow to pass through and is connected with first inlet and first outlet, the first outlet end of flow channel body extends outward and forms the pipeline, is equipped with the gas valve on the pipeline, the end of pipeline is designed as, and the metering module is connected with the metering table casing to the upward wear through metering table casing, and the gas flow enters the flow channel body through first inlet, and the pipeline is discharged after entering first outlet. The meter includes the casing, first transducer, second transducer and the metering module as described above. The utility model has reasonable structure, is favorable to the small size, and is favorable to improving the measurement accuracy.

Description

Technical Field

[0001] This utility model is designed in the field of ultrasonic metrology technology, specifically a novel ultrasonic metrology module and meter. Background Technology

[0002] As is well known, ultrasonic meters have a series of advantages, including high measurement accuracy, no mechanical wear, good stability, real-time monitoring and safety protection, and strong intelligent expansion capabilities, and are widely used in production and daily life. Ultrasonic meters utilize the principle that ultrasonic waves carry information about fluid flow rate when propagating in a flowing medium. By detecting the ultrasonic signals passing through the fluid, the flow velocity information of the fluid can be obtained, and finally, the required flow rate can be calculated based on the corresponding principles.

[0003] In the prior art, the gas valve on the meter is located at the gas inlet of the meter housing. In order to avoid the influence of external turbulence and the turbulence generated by the gas valve itself, it is usually necessary to select a gas valve with good anti-turbulence performance. This often results in a complex gas valve structure, large space occupation, and is not conducive to reducing the cost of use.

[0004] In addition, saving installation space and miniaturizing the meter is also an important development direction for ultrasonic meters in the future. How to ensure the metering accuracy of the metering module and reduce costs under the premise of miniaturization is an urgent problem to be solved. Utility Model Content

[0005] This utility model discloses a novel ultrasonic metering module and meter, which solves the technical problems of large space occupation, poor airflow buffering, and unfavorable miniaturization of existing ultrasonic metering modules. It features a reasonable structure, facilitates miniaturization, and improves metering accuracy. The adopted technical solution is as follows: A novel ultrasonic metering module includes a flow channel body, through which airflow passes and is connected to a first inlet and a first outlet. The first outlet end of the flow channel body extends outward to form a pipeline, and an air valve is provided on the pipeline. The end of the pipeline is designed to pass upward through the meter housing and connect to the meter. Airflow enters the flow channel body through the first inlet, enters the pipeline from the first outlet, and is discharged.

[0006] Based on the above technical solution, the flow channel body and the pipeline are arranged in an L-shape, and the connection between the first outlet and the pipeline inlet bulges outward to form a buffer cavity.

[0007] Based on the above technical solution, the flow channel body near the first inlet is funnel-shaped to guide the airflow smoothly into the metering section inside the flow channel body.

[0008] Based on the above technical solution, the metering section of the flow channel body is provided with a rectification structure, which includes multiple axially extending rectification channels. The first inlet is also provided with a rectification grille. After the airflow is rectified by the rectification grille, it enters the rectification channel in the metering section.

[0009] Based on the above technical solution, the rectifier grid includes several sub-channels evenly arranged in the circumferential direction, a first mounting position for installing a transducer is formed at the center of the rectifier grid, and a second mounting position for installing a transducer is formed on the inner sidewall of the buffer cavity facing the first outlet.

[0010] Based on the above technical solution, the end of the pipeline passes upward through the meter housing and extends out of the housing, and the part of the pipeline end extending out of the housing is also provided with an annular groove for accommodating the sealing ring.

[0011] Based on the above technical solution, the air valve includes a ball valve and a ball valve actuator. The air valve actuator is fixed outside the pipeline and is used to drive the ball valve to open and close.

[0012] A novel meter includes a housing, a first transducer, a second transducer, and a metering module as described above. The metering module is disposed inside the housing. A gas inlet on the housing is connected to a first inlet through the inner cavity of the housing. The end of the pipe passes upward through the housing to form a gas outlet of the meter. The first and second transducers are arranged in a counter-firing configuration and installed close to the first inlet and the first outlet, respectively. A dust removal unit is provided at the gas inlet to filter out particulate matter in the airflow.

[0013] Based on the above technical solution, the airflow passage in the dust removal unit includes multiple airflow branches arranged in parallel, which are connected end to end and meandering; the airflow branches are provided with filter material to filter out particulate matter in the airflow.

[0014] Based on the above technical solution, the filter material is selected from glass fiber, polyester fiber or membrane filter media.

[0015] Beneficial effects This utility model's metering module has a reasonable structure, integrating the air valve and the flow channel body into one unit. On the one hand, it facilitates assembly and improves processing efficiency; on the other hand, compared with the existing technology where the air valve and the flow channel body are separate, it also reduces the space occupied inside the meter, which not only allows the airflow to be fully buffered and turbulence eliminated within the meter, thereby improving metering accuracy, but also provides conditions for the miniaturization of the meter; furthermore, it provides conditions for setting up a dust removal unit on the inlet side of the flow channel body.

[0016] In this metering module, the air valve is located on the outlet side of the flow channel body. This not only avoids the air valve occupying the space on the inlet side of the flow channel body, making the air intake buffer chamber formed on the inlet side of the flow channel body large enough, so that the airflow can be fully buffered and turbulence eliminated before entering the flow channel body, but also avoids the air valve causing turbulence to the metering section inside the flow channel body, compared to the prior art where the air valve is located at the gas inlet of the meter housing. In addition, it provides conditions for setting up a dust removal unit at the gas inlet of the meter housing. The airflow is buffered and filtered in the dust removal unit before entering the meter, which is also conducive to improving the stability and uniformity of the airflow inside the flow channel body, and further improving the metering accuracy.

[0017] In this metering module, the inlet end of the first outlet pipe bulges outward to form a buffer cavity. This allows the airflow discharged from the first outlet to continue to diffuse smoothly forward, avoiding turbulence at the first outlet and thus preventing disturbance to the metering section, which is beneficial to improving metering accuracy.

[0018] In this utility model, the dust removal unit of the meter is ingeniously designed to form a meandering airflow path. The airflow path is equipped with filter material, which prolongs the residence time of the airflow in the dust removal unit in a limited space. Moreover, the filter material can effectively buffer the airflow and reduce the airflow velocity, providing conditions for reducing the buffer space in the meter and miniaturizing the meter. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0020] Figure 1 : A three-dimensional structural diagram of the metering module in this utility model; Figure 2 : A partial cross-sectional structural diagram of the main view of the metering module in this utility model; Figure 3 : A cross-sectional view of the rectifier structure assembled in the metering section in this utility model; Figure 4 : A three-dimensional structural diagram of the measuring instrument in this utility model; Detailed Implementation The following description and accompanying drawings fully illustrate specific embodiments described herein to enable those skilled in the art to practice them. Some embodiments may include or substitute parts and features of other embodiments. The scope of the embodiments herein encompasses the entire scope of the claims and all available equivalents thereof. Throughout this document, the terms “first,” “second,” etc., are used only to distinguish one element from another without requiring or implying any actual relationship or order between the elements. Indeed, a first element can also be referred to as a second element, and vice versa. Furthermore, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a structure, apparatus, or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a structure, apparatus, or device. Without further limitation, an element defined by the phrase “comprising one…” does not exclude the presence of other identical elements in the structure, apparatus, or device that includes said element. The various embodiments described herein are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments; similar or identical parts between embodiments can be referred to interchangeably.

[0021] The terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" used in this document to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are used solely for the convenience of describing the document and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description herein, unless otherwise specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two elements; they can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0022] In this document, unless otherwise stated, the term "multiple" means two or more.

[0023] In this article, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0024] In this article, the term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0025] like Figure 1 and2 The illustration shows a novel ultrasonic metering module, used for gas detection in this embodiment. It includes a flow channel body 1, which extends horizontally and provides passage for gas flow, connecting a first inlet 101 and a first outlet 102. In other embodiments of this invention, the flow channel body 1 may also have an upward tilting angle from the first inlet 101 to the first outlet 102 to extend the axial length of the metering section within the flow channel body 1 within a limited space.

[0026] like Figure 3 As shown, a rectification structure 7 is provided in the metering section of the flow channel body 1. In this embodiment, the rectification structure 7 includes a central flow channel 71 and two peripheral flow channels 72 that are evenly arranged around the central flow channel 71. Thus, the rectification structure 7 includes multiple axially extending rectification channels to ensure that the airflow passes through the metering section smoothly and evenly.

[0027] like Figure 2 As shown, the flow channel body 1 near the first inlet 101 is funnel-shaped to guide the airflow smoothly into the metering section within the flow channel body 1. Furthermore, a flow straightening grille 8 is provided at the first inlet 101. The inner circumferential surface of the flow channel body 1 corresponding to the position of the flow straightening grille 8 is conical, guiding the airflow smoothly through the first inlet 101. The outer flow channel 72 extends and forms several guide channels evenly arranged circumferentially around the flow straightening grille 8. These guide channels include multiple guide branches of the same size, arranged in a fan shape. After being straightened by the flow straightening grille 8, the airflow enters the straightening channel within the metering section, thus avoiding airflow collisions between the flow straightening grille 8 and the flow channel. Figure 4 As shown, the first mounting position 5 is formed at the center of the rectifier grille 8.

[0028] like Figure 2 As shown, the first outlet 102 end of the flow channel body 1 extends outward to form a pipe 3. The pipe 3 extends vertically, and the flow channel body 1 and the pipe 3 are arranged in an L-shape. The flow channel body 1 at the connection between the first outlet 102 and the inlet end of the pipe 3 bulges outward to form a buffer cavity 100, so that the airflow discharged through the first outlet 102 is buffered in the buffer cavity 100 before entering the pipe 3, avoiding turbulence on the metering section and improving the metering accuracy of the metering section.

[0029] like Figure 2 As shown, a second mounting position 6 for mounting a transducer is formed on the inner wall of the buffer cavity 100 facing the first outlet 102. Thus, the two transducers on the first mounting position 5 and the second mounting position 6 are arranged in a facing-to-facing manner.

[0030] The end of the pipe 3 is designed to pass upward through the meter housing 20 and connect to the meter. In this way, the airflow entering through the gas inlet 201 on the meter housing 20 enters the flow channel body 1 through the first inlet 101, and then enters the pipe 3 through the first outlet 102 before being discharged.

[0031] like Figure 2 As shown, the end of the pipe 3 passes upward through the meter housing 20 and extends out of the housing 20. The part of the pipe 3 extending out of the housing 20 is also provided with an annular groove 31 for accommodating the sealing ring, which facilitates connection with the gas pipeline.

[0032] like Figure 1 and 2 As shown, a gas valve 4 is provided in the middle section of the pipeline 3. In this embodiment, the gas valve 4 includes a ball valve 41 and a ball valve actuator 42. The gas valve actuator 41 is fixed outside the pipeline 3 and is used to drive the ball valve 41 to open and close. Both the ball valve 41 and the ball valve actuator 42 are existing technologies and will not be described in detail here. In this way, integrating the flow channel body 1 with the gas valve 4 not only facilitates installation but also saves a significant amount of space compared to the existing method of installing the flow channel body 1 and the gas valve 4 separately. This is beneficial for the miniaturization design of the meter housing 20, thereby facilitating the installation and arrangement of the meter and reducing the production cost of the meter.

[0033] like Figure 4 As shown, a novel meter includes a housing 20, a first transducer 9, a second transducer 10, and a metering module as described above.

[0034] like Figure 4 As shown, the metering module is located inside the housing 20 (partially shown). The inner cavity of the housing 20 forms an air intake buffer chamber 2. This makes the air intake buffer chamber 2 large enough so that the airflow can be fully buffered and the turbulence in the airflow can be fully eliminated, so that the airflow enters the flow channel body 1 smoothly and evenly, avoiding the disturbance to the metering section inside the flow channel body 1.

[0035] The gas inlet 201 on the housing 20 communicates with the first inlet 101 through the inner cavity of the housing 20. The end of the pipe 3 passes upward through the housing 20 to form the gas outlet 202 of the meter. The first transducer 9 and the second transducer 10 are arranged in a counter-firing configuration. The first transducer 9 is fixed to the metering module through the first mounting position 5, and the second transducer 10 is fixed to the metering module through the second mounting position 6. Figure 2 As shown, the first transducer 9 and the second transducer 10 are installed close to the first inlet 101 and the first outlet 102, respectively. like Figure 4 As shown, a dust removal unit (not shown) is provided at the gas inlet 201 to filter out particulate matter in the airflow.

[0036] The airflow path within the dust removal unit comprises multiple parallel airflow branches, which extend in a continuous S-shape from bottom to top, maximizing the length of the airflow path and extending the residence time of the airflow within a limited space. Each airflow branch contains filter material to remove particulate matter from the airflow. In this embodiment, the filter material is selected from glass fiber, polyester fiber, or membrane filter media. The filter material serves two purposes: firstly, it removes particulate matter, preventing wear on components in the metering system, especially electronic components; secondly, it further buffers the airflow, increasing the residence time of the airflow in the airflow path and significantly increasing the contact time between the airflow and the filter material, thereby improving the adsorption effect.

[0037] The airflow then exits through the airflow channel and enters the larger intake buffer chamber 2, where the airflow velocity is further reduced significantly, thus eliminating turbulence and stabilizing the airflow, which is beneficial for improving measurement accuracy.

[0038] The present invention has been described above by way of example, but the present invention is not limited to the specific embodiments described above. Any modifications or variations made based on the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. A novel ultrasonic metering module, characterized in that, Includes a flow channel body (1), which is for airflow to pass through and is connected to a first inlet (101) and a first outlet (102). The first outlet (102) of the flow channel body (1) extends outward to form a pipe (3). A valve (4) is provided on the pipe (3). The end of the pipe (3) is designed to pass upward through the meter housing (20) and connect with the meter housing (20). The airflow enters the flow channel body (1) through the first inlet (101), enters the pipe (3) from the first outlet (102), and is discharged.

2. The novel ultrasonic metering module according to claim 1, characterized in that, The flow channel body (1) and the pipeline (3) are arranged in an L-shape, and the first outlet (102) and the inlet end of the pipeline (3) bulge outward to form a buffer cavity (100).

3. The novel ultrasonic metering module according to claim 2, characterized in that, The flow channel body (1) near the first inlet (101) is funnel-shaped to guide the airflow smoothly into the metering section inside the flow channel body (1).

4. The novel ultrasonic metering module according to claim 3, characterized in that, The metering section of the flow channel body (1) is provided with a rectification structure (7), which includes multiple axially extending rectification channels. A rectification grille (8) is also provided at the first inlet (101). The airflow enters the rectification channel in the metering section after being rectified by the rectification grille (8).

5. The novel ultrasonic metering module according to claim 4, characterized in that, The rectifier grille (8) includes several sub-channels arranged evenly in the circumference. A first mounting position (5) for installing a transducer is formed at the center of the rectifier grille (8). A second mounting position (6) for installing a transducer is formed on the inner wall of the buffer cavity (100) facing the first outlet (102).

6. The novel ultrasonic metering module according to claim 2, characterized in that, The end of the pipe (3) passes upward through the meter housing (20) and extends out of the housing (20), and the part of the end of the pipe (3) extending out of the housing (20) is also provided with an annular groove (31) for accommodating the sealing ring.

7. The novel ultrasonic metering module according to any one of claims 1 to 6, characterized in that, The air valve (4) includes a ball valve (41) and a ball valve actuator (42). The air valve actuator (42) is fixed outside the pipeline (3) and is used to drive the ball valve (41) to open and close.

8. A novel measuring instrument, characterized in that, The device includes a housing (20), a first transducer (9), a second transducer (10), and a metering module as described in any one of claims 1 to 6. The metering module is located inside the housing (20). The gas inlet (201) on the housing (20) is connected to the first inlet (101) through the inner cavity of the housing (20). The end of the pipe (3) passes upward through the housing (20) to form the gas outlet (202) of the meter. The first transducer (9) and the second transducer (10) are arranged in a counter-firing manner and installed close to the first inlet (101) and the first outlet (102), respectively. A dust removal unit is provided at the gas inlet (201) to filter out particulate matter in the airflow.

9. The novel measuring instrument according to claim 8, characterized in that, The airflow passage within the dust removal unit includes multiple airflow branches arranged in parallel, which are connected end to end and meander. Filter material is provided in each airflow branch to filter out particulate matter in the airflow.

10. The novel measuring instrument according to claim 9, characterized in that, The filter material is selected from glass fiber, polyester fiber or membrane filter media.

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