Ultrasonic fluid metering device and ultrasonic gas meter

Abstract

The utility model discloses ultrasonic wave fluid metering device and ultrasonic wave gas table, ultrasonic wave fluid metering device includes: a fluid passage has a flow inlet and a flow outlet, has N separating board between the flow inlet and flow outlet, the separating board includes R longitudinal separating board and M horizontal separating board, the longitudinal separating board and horizontal separating board are perpendicular to each other, the longitudinal separating board is located fluid passage intermediate position, R is equal to or greater than 2, a pair of ultrasonic wave transceiver is configured in the fluid passage top, a PCB is configured in the outside of fluid passage. The longitudinal separating board divides the fluid passage into the measuring flow channel and the non-measuring flow channel in the utility model, the horizontal separating board bisects the non-measuring flow channel, improves the measuring range under the condition of large flow, reduces the calibration difficulty, can adapt to more complex working condition environment.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic metering technology, and more specifically to an ultrasonic fluid metering device and an ultrasonic gas meter. Background Technology

[0002] The ultrasonic metering device and ultrasonic gas metering stage mainly use the time difference method for flow detection. The propagation direction of the ultrasonic signal is divided into co-current and counter-current relative to the flow direction of the gas. By measuring the time difference of the ultrasonic signal propagating in the fluid in co-current and counter-current, the flow velocity of the gas is calculated based on the time difference, and then the amount of gas passing through the metering device per unit time is calculated based on the flow velocity.

[0003] Ultrasonic gas meters can be categorized into residential gas meters and industrial / commercial gas meters based on their application. Residential gas meters handle smaller flow rates, resulting in smaller metering devices with larger cross-sectional areas; conversely, industrial / commercial gas meters have significantly larger metering devices with larger cross-sectional areas. Therefore, improving the accuracy of industrial / commercial gas meter readings remains a major challenge. Utility Model Content

[0004] The description of this utility model introduces a series of simplified concepts, which will be further explained in detail in the detailed description section. This description is not intended to limit the key features and essential technical features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0005] To at least partially solve the above problems, this utility model proposes an ultrasonic fluid metering device, comprising: a fluid channel having a flow inlet and a flow outlet, with N partition plates between the flow inlet and the flow outlet, the partition plates including R longitudinal partition plates and M transverse partition plates, the longitudinal partition plates and the transverse partition plates being perpendicular to each other, the longitudinal partition plates being located in the middle of the fluid channel, and R ≥ 2; a pair of ultrasonic transceivers disposed above the fluid channel; and a PCB disposed outside the fluid channel.

[0006] Preferably, the number R of the longitudinal partitions is 2, and the two longitudinal partitions divide the fluid channel into a measurement channel and a non-measurement channel, with the measurement channel located directly below the ultrasonic transceiver.

[0007] Preferably, the two ends of the transverse partition plate abut against the fluid channel and the longitudinal partition plate, respectively.

[0008] Preferably, the M transverse partitions divide the non-measuring channel into M+2 equal parts.

[0009] Preferably, it further includes a flow-rectifying grille, which is fixed to the inlet of the fluid channel.

[0010] Preferably, the inlet of the fluid channel is provided with a guide plate.

[0011] Preferably, the number of longitudinal partitions R is 2, and the number of transverse partitions M is 8.

[0012] Preferably, the ultrasonic transceiver is fixed above the fluid channel by a mounting assembly, the mounting assembly including a base and a first component, the base having a slot, the base being integrally injection molded with the fluid channel; the first component having an elastic buckle, the elastic buckle being adapted to the slot.

[0013] Preferably, it also includes a protective cover for the ultrasonic transceiver.

[0014] An ultrasonic gas meter, including any of the ultrasonic fluid metering devices described above.

[0015] The beneficial effects of this utility model are as follows: The ultrasonic fluid metering device and ultrasonic gas meter proposed in this utility model are provided with two longitudinal partitions in the fluid channel, which divide the fluid channel into a measuring channel and a non-measuring channel; at the same time, eight transverse partitions divide the non-measuring channel equally. Under large flow conditions, the measurement range is increased, the calibration difficulty is reduced, and it can adapt to more complex working conditions. Attached Figure Description

[0016] The following drawings, which are incorporated herein by reference as part of this invention, are provided for understanding the invention. The drawings illustrate embodiments of the invention and their descriptions, serving to explain the principles of the invention.

[0017] In the attached image:

[0018] Figure 1 This is a cross-sectional view of the ultrasonic fluid metering device in Embodiment 1 of this utility model;

[0019] Figure 2 This is a longitudinal cross-sectional view of the ultrasonic fluid metering device in Embodiment 1 of this utility model;

[0020] Figure 3 This is a side view of the ultrasonic fluid metering device in Embodiment 1 of this utility model;

[0021] Figure 4 This is a front view of the ultrasonic fluid metering device in Embodiment 1 of this utility model;

[0022] Figure 5 This is a perspective view of the ultrasonic fluid metering device in Embodiment 1 of this utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10 Fluid channel 11 Longitudinal partition plate 12 Transverse partition plate 13 Flow guide plate

[0025] 20 Ultrasonic transceiver 21 Ultrasonic transceiver protective cover 22 Base 23 First component

[0026] 30PCB 40 rectifier grille Detailed Implementation

[0027] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0028] To fully understand this invention, a detailed description will be provided below. Obviously, the implementation of this invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of this invention are described in detail below; however, other embodiments may also be possible besides these detailed descriptions.

[0029] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of the stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0030] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and have no other meaning, such as a specific order. Furthermore, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0031] It should be noted that the terms “up,” “down,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this article are for illustrative purposes only and are not intended to be restrictive.

[0032] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of the present invention is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art.

[0033] Example 1

[0034] Figure 1 and Figure 2 The present invention provides a transverse and longitudinal cross-sectional view of the ultrasonic fluid metering device mentioned herein. The ultrasonic fluid metering device includes: a fluid channel 10 having a flow inlet and a flow outlet, with N partition plates between the flow inlet and the flow outlet, the partition plates including R longitudinal partition plates 11 and M transverse partition plates 12, the longitudinal partition plates 11 and the transverse partition plates 12 being perpendicular to each other, the longitudinal partition plates 11 being located in the middle of the fluid channel, and R ≥ 2; and a pair of ultrasonic transceivers 20 disposed in the fluid channel 10. Above, an ultrasonic transceiver 20 is fixed above the fluid channel 10 by a mounting assembly, which includes a base 22 and a first component 23. The base 22 has a slot and is integrally injection molded with the fluid channel 10. The first component 23 has an elastic buckle that matches the slot. The ultrasonic transceiver 20 is fixed between the base 22 and the first component 23. By pressing the first component 23, the ultrasonic transceiver 20 is fixed to the base 22. The elastic buckle on the first component 23 matches the slot on the base 22. A PCB 30 is disposed on the outside of the fluid channel 10. The mounting part of the PCB is integrally injection molded with the fluid channel 10, which can reduce assembly and reduce production costs. The mounting part of the PCB has a matching buckle for easy fixing of the PCB.

[0035] In this embodiment, the number R of the longitudinal partitions 11 is 2. These two longitudinal partitions 11 divide the fluid channel 10 into a measurement channel and a non-measurement channel. The measurement channel is located directly below the ultrasonic transceiver. The number M of the transverse partitions 12 is 8. Four transverse partitions 12 are placed on each side of the measurement channel, dividing each side of the non-measurement channel into five equally divided small non-measurement channels, thus increasing the gas flow rate. The two ends of the transverse partitions 12 abut against the fluid channel 10 and the longitudinal partitions 11, respectively. The eight transverse partitions 12 divide the non-measurement channel into ten equal parts. This structural arrangement, while ensuring measurement accuracy, increases the gas flow rate and can be used for industrial and commercial gas measurement.

[0036] like Figure 2As shown, the inlet of the fluid channel 10 is equipped with a guide plate 13, and the cross-sectional area gradually decreases along the direction of gas flow. The gas enters the fluid channel 10 from the outside through the rectifier grille 40. The fluid channel 10 has transverse and longitudinal partition plates inside. The airflow is dispersed by the rectifier grille 40 and mixed in the area of ​​the guide plate 13. The airflow entering the measurement channel and the non-measurement channel is uniform, which can improve the accuracy of measurement and calculation.

[0037] Figures 3-5 The figures shown are a side view, a front view, and a perspective view of the ultrasonic fluid metering device mentioned in this utility model. In this embodiment, the ultrasonic transceiver 20 is a transducer, and an ultrasonic transceiver protective cover 21 covers the outside of the transducer. The ultrasonic transceiver protective cover protects the transducer and prevents external forces from affecting the transducer and thus affecting the measurement. The transducer is used to transmit and receive ultrasonic waves and is fixed above the fluid channel 10 by a base. The base and the fluid channel 10 are integrally injection molded. The transducer is pressed and fixed to the base by a first component 23. This embodiment also includes a rectifier grid 40, which is fixed to the inlet of the fluid channel. The rectifier grid 40 divides the inlet into several small holes, which can further stabilize the fluid flow field and reduce the influence of eddies on the measurement.

[0038] The main body of this product has inlet and outlet channels, and guide plates are installed inside the channels to guide and stabilize the flow, improving the stability of the flow field and the anti-turbulence performance. The middle channel is the measurement channel. With the measurement channel size unchanged, the two side channels are used for fluid flow field distribution and to increase the measurement range. The inlet of the guide plates on both sides is a gradually tapered oblique cut. This structure helps to reduce the error drop throughout the entire measurement range of the product, thereby reducing the difficulty of calibration.

[0039] Example 2

[0040] The ultrasonic gas meter includes the ultrasonic fluid metering device described in Embodiment 1, and also includes a housing and connecting parts, which are similar to other components of the ultrasonic gas meter in the prior art, and will not be described in detail here.

[0041] The ultrasonic fluid metering device and ultrasonic gas meter proposed in this utility model have two longitudinal partitions in the fluid channel to divide the fluid channel into a measuring channel and a non-measuring channel; at the same time, eight transverse partitions divide the non-measuring channel equally. Under large flow conditions, the measurement range is increased, the calibration difficulty is reduced, and it can adapt to more complex working conditions.

[0042] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An ultrasonic fluid metering device, characterized in that, include: A fluid channel has a flow inlet and a flow outlet, and N partitions are provided between the flow inlet and the flow outlet. The partitions include R longitudinal partitions and M transverse partitions. The longitudinal partitions and transverse partitions are perpendicular to each other. The longitudinal partitions are located in the middle of the fluid channel, and R ≥ 2. A pair of ultrasonic transceivers are disposed above the fluid channel; A PCB is disposed on the outside of the fluid channel.

2. The ultrasonic fluid metering device according to claim 1, characterized in that, The number of longitudinal partitions R is 2, and the two longitudinal partitions divide the fluid channel into a measurement channel and a non-measurement channel. The measurement channel is located directly below the ultrasonic transceiver.

3. The ultrasonic fluid metering device according to claim 1, characterized in that, The two ends of the transverse partition plate abut against the fluid channel and the longitudinal partition plate, respectively.

4. The ultrasonic fluid metering device according to claim 2, characterized in that, The M horizontal partitions divide the non-measurement channel into M+2 equal parts.

5. The ultrasonic fluid metering device according to claim 1, characterized in that, It also includes a flow-rectifying grid, which is fixed to the inlet of the fluid channel.

6. The ultrasonic fluid metering device according to claim 1, characterized in that, The inlet of the fluid channel is equipped with a guide plate.

7. The ultrasonic fluid metering device according to claim 1, characterized in that, The number of longitudinal partitions R is 2, and the number of transverse partitions M is 8.

8. The ultrasonic fluid metering device according to claim 1, characterized in that, The ultrasonic transceiver is fixed above the fluid channel by a mounting assembly, which includes a base and a first component. The base has a slot and is integrally injection molded with the fluid channel. The first component has an elastic buckle that is adapted to the slot.

9. The ultrasonic fluid metering device according to claim 1, characterized in that, It also includes a protective cover for the ultrasonic transceiver.

10. An ultrasonic gas meter, characterized in that, Includes the ultrasonic fluid metering device as described in any one of claims 1 to 9.

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