Ultrasonic flowmeter

Abstract

The utility model discloses an ultrasonic flowmeter, which comprises a flow path body, a flow path body, a flow path control circuit, a flow path control circuit, a flow path control circuit and a flow path control circuit, and is characterized in that the flow path body comprises a measuring flow path and a non-measuring flow path; a pair of ultrasonic transceivers disposed in the flow path body; a multi-layer section in which partition plates for dividing the flow path body into multiple layers are disposed; the flow path body and the multi-layer part are integrally formed; the partition plates comprise transverse partition plates. According to the ultrasonic flowmeter provided by the utility model, the transverse flow guide plate is designed in the flow channel, under the condition that the size of the existing flow channel is not increased, the effect of stabilizing a flow field is achieved, meanwhile, an ultrasonic signal is enhanced, attenuation of the ultrasonic signal is reduced, the influence of bias flow is reduced, and the measurement precision is improved; meanwhile, in order to be compatible with a larger measuring range, one or more measuring range increasing flow channels are arranged in the size appearance of the inlet and the outlet, the flow channels are separated from the measuring flow channels, the measuring range can be increased while the signal strength of the transducer is not reduced, and meanwhile pressure loss can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic measurement, in particular to an ultrasonic flow meter. Background Art

[0002] The ultrasonic metering device and ultrasonic gas performance stage mainly use the time difference method to perform flow detection. The propagation direction of the ultrasonic signal is divided into downstream and upstream relative to the flow direction of the gas. By measuring the time difference when the ultrasonic signal propagates downstream and upstream in the fluid, the gas flow rate is calculated based on the time difference, and then the flow rate is used to calculate the amount of gas passing through the metering device per unit time.

[0003] Ultrasonic measurement of medium flow velocity is actually the average flow velocity of the fluid covered by the sound channel, which has a certain proportional relationship with the average flow velocity of the cross section. Figure 16 As shown, when a fluid flows through a closed pipe section, it exhibits laminar flow at low velocities and transitions to turbulent flow as the velocity increases. These two flow regimes exhibit different velocity profiles and proportional relationships, with laminar and turbulent flow varying by as much as 20%, severely impacting the accurate measurement of cross-laminar and turbulent flow velocities. This effect is particularly severe for flow measurement in small-diameter pipe sections, where a pair of probes is typically used due to size and cost constraints.

[0004] Conventional solutions include: Solution 1: Figure 17 As shown, the flow channel is designed into a narrow rectangle so that the transducer probe can completely cover the flow measurement area. Solution 2: Figure 18 As shown, the entire flow field is evenly divided into multiple fluid strips by a partition. The transducer probe only measures part of the divided fluid, but the flow velocity information of each divided strip of fluid is fully measured, and then multiplied by a certain coefficient to obtain the average flow velocity of the entire cross-section. However, both solutions have their drawbacks. The first solution is to compress the flow channel width. Under the same cross-sectional area, the flow channel height is bound to increase significantly. Increasing the flow channel size will also increase the sound path between the two probes, which will bring about attenuation problems. Although the second solution does not have the above problems, the guide partition in the fluid will inevitably hinder the ultrasonic signal, and the back-end amplification circuit requirements are higher. At the same time, when there is biased flow or local vortex in the flow field, the flow velocity of each fluid is not uniform, which is bound to cause measurement errors. Utility Model Content

[0005] The Summary of the Utility Model introduces a series of simplified concepts that will be further described in the Detailed Description of the Utility Model. The Summary of the Utility Model does not intend to limit the key features and essential technical features of the claimed technical solution, nor does it intend to determine the scope of protection of the claimed technical solution.

[0006] In order to at least partially solve the above problems, the present invention proposes an ultrasonic flow meter, comprising:

[0007] A flow path body having a flow path for a measured fluid to flow, including a measuring flow path and a non-measuring flow path; a pair of ultrasonic transceivers arranged on the flow path body; a multilayer portion, which is provided with a partition plate that divides the flow path body into multiple layers; the flow path body and the multilayer portion are integrally formed; the partition plate includes a transverse partition plate.

[0008] Preferably, the transverse partition plate passes through the measurement flow path and is opposite to the ultrasonic transceiver.

[0009] Preferably, both ends of the transverse partition plate abut against the left side and the right side of the flow path body respectively.

[0010] Preferably, the partition plate further comprises a longitudinal partition plate, and the longitudinal partition plate and the transverse partition plate are in contact with each other and are perpendicular to each other.

[0011] Preferably, the multi-layer portion includes n longitudinal partition plates and m transverse partition plates; one end of the n longitudinal partition plates is fixed to the upper end of the flow path body, and the other end is abutted against the transverse partition plate; the two ends of the transverse partition plate are respectively fixed to the left side and right side of the flow path body.

[0012] Preferably, the number n of the longitudinal partition plates is ≥2, and the number m of the transverse partition plates is ≥1.

[0013] Preferably, the multi-layer portion includes two longitudinal partition plates and one transverse partition plate; one end of the two longitudinal partition plates is fixed to the upper end of the flow path body, and the other end is abutted against the transverse partition plate; the two ends of the transverse partition plate are respectively fixed to the left and right sides of the flow path body.

[0014] Preferably, the multi-layer portion includes e longitudinal partition plates and f transverse partition plates; one end of the longitudinal partition plate is fixed to the upper end or lower end of the flow path body, and the other end is abutted against the transverse partition plate; the two ends of the transverse partition plate are respectively abutted against the other end of the longitudinal partition plate.

[0015] Preferably, the number of the longitudinal partition plates e≥3, and the number of the transverse partition plates f≥1.

[0016] Preferably, the multi-layer portion includes three longitudinal partitions and one transverse partition; one end of the two longitudinal partitions is fixed to the upper end of the flow path body, and the other end is abutted against the transverse partition; the two ends of the transverse partition are respectively abutted against the other ends of the two longitudinal partitions; one end of the one longitudinal partition is fixed to the lower end of the flow path body, and the other end is abutted against the transverse partition, and the longitudinal partition and the transverse partition divide the flow path body into three independent flow paths.

[0017] Preferably, the flow paths on both sides of the flow path body are L-shaped.

[0018] Preferably, the multi-layer portion includes a longitudinal partition plate and b transverse partition plates; the two ends of the a longitudinal partition plate are respectively abutted against the upper end and the lower end of the flow path body; the two ends of the transverse partition plate are respectively abutted against the left side and the right side of the flow path body, and the b transverse partition plates pass through the a longitudinal partition plate.

[0019] Preferably, the number a of the longitudinal partition plates is ≥2, and the number b of the transverse partition plates is ≥1.

[0020] Preferably, the multi-layer portion includes two longitudinal partitions and one transverse partition; the two ends of the two longitudinal partitions are respectively abutted against the upper end and the lower end of the flow path body; the two ends of the transverse partition are respectively abutted against the left side and the right side of the flow path body, and the one transverse partition passes through the two longitudinal partitions, and the longitudinal partitions and the transverse partitions divide the flow path body into six independent flow paths.

[0021] Beneficial effects of the present invention: The present invention proposes an ultrasonic flow meter, in which a transverse guide plate is designed in the flow channel, which solves the problem of stabilizing the flow field without increasing the size of the existing flow channel. At the same time, the ultrasonic signal is enhanced, the attenuation of the ultrasonic signal is reduced, the influence of the bias flow is reduced, and the measurement accuracy is improved; at the same time, in order to be compatible with a larger measuring range, one or more measuring range-increasing flow channels are provided within the inlet and outlet size shape, and this part of the flow channel is separated from the measuring flow channel, which can increase the measuring range without reducing the transducer signal strength, and can reduce the pressure loss at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The following drawings of the present invention are used as a part of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and the description thereof, and are used to explain the principle of the present invention.

[0023] In the attached figure:

[0024] Figure 1 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Example 1 of the present utility model;

[0025] Figure 2 This is a schematic diagram of the Z-axis cross-sectional structure of an ultrasonic flowmeter in Example 1 of the present utility model;

[0026] Figure 3 This is a schematic diagram of the Y-axis cross-sectional structure of an ultrasonic flowmeter in Example 1 of the present utility model;

[0027] Figure 4This is the ultrasonic signal and sound path attenuation curve of gases with different sound velocities in Example 1 of the present utility model;

[0028] Figure 5 It is an exploded view of an ultrasonic flow meter;

[0029] Figure 6 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Example 2 of the present utility model;

[0030] Figure 7 This is a schematic diagram of the Z-axis cross-sectional structure of an ultrasonic flowmeter in Example 2 of the present utility model;

[0031] Figure 8 This is a schematic diagram of the Y-axis cross-sectional structure of an ultrasonic flowmeter in Example 2 of the present utility model;

[0032] Figure 9 This is a schematic diagram of the Y-axis cross-sectional structure of a special-shaped flow channel structure of an ultrasonic flow meter in Example 2 of the present utility model;

[0033] Figure 10 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Example 3 of the present utility model;

[0034] Figure 11 This is a schematic diagram of the Z-axis cross-sectional structure of an ultrasonic flowmeter in Example 3 of the present utility model;

[0035] Figure 12 This is a schematic diagram of the Y-axis cross-sectional structure of an ultrasonic flowmeter in Example 3 of the present utility model;

[0036] Figure 13 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Example 4 of the present utility model;

[0037] Figure 14 This is a schematic diagram of the Z-axis cross-sectional structure of an ultrasonic flowmeter in the fourth embodiment of the present utility model;

[0038] Figure 15 This is a schematic diagram of the Y-axis cross-sectional structure of an ultrasonic flowmeter in Example 4 of the present utility model;

[0039] Figure 16 is the velocity distribution diagram in the closed pipe;

[0040] Figure 17 It is a schematic diagram of the prior art solution 1;

[0041] Figure 18 This is a schematic diagram of the second prior art solution.

[0042] Description of reference numerals:

[0043] 1 flow path body 2 ultrasonic transceiver 3-1 horizontal partition plate

[0044] 3-2 horizontal partition 3-3 horizontal partition 3-4 horizontal partition

[0045] 4 Acoustic window 5 Ultrasonic transceiver 6 Ultrasonic transceiver fixing bracket

[0046] 7 Ultrasonic transceiver mounting base 8 Circuit board 9-2 Longitudinal partition board

[0047] 9-3 longitudinal partition 9-4 longitudinal partition DETAILED DESCRIPTION

[0048] In the following description, numerous specific details are provided 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 known in the art are not described to avoid confusion with the present invention.

[0049] To provide a thorough understanding of the present invention, a detailed description will be provided in the following description. It is apparent that the implementation of the present invention is not limited to the specific details familiar to those skilled in the art. Preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other embodiments.

[0050] It should be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of the features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0051] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" itself does not imply the existence of a "second component", and the term "second component" itself does not imply the existence of a "first component".

[0052] It should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside" and similar expressions used in this document are for illustrative purposes only and are not limiting.

[0053] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0054] Example 1

[0055] Figure 5 This is an exploded view of an ultrasonic flowmeter, which includes a flow path body 1, ultrasonic transceivers 2 and 5, and a circuit board 8. The measured fluid flows from the inlet at one end of the flow path body 1 to the outlet at the other end. The ultrasonic transceivers 2 and 5 are located at the upper end of the flow path body 1 and are fixed to the ultrasonic transceiver mounting base 7 via an ultrasonic transceiver fixing bracket 6. The ultrasonic transceivers 2 and 5 continuously transmit or receive ultrasonic waves, thereby measuring the time in the downstream and upstream directions and calculating the flow rate. The circuit board 8 is fixed to the side of the flow path body 1 and is electrically connected to the ultrasonic transceivers 2 and 5. It simultaneously calculates the flow rate and outputs the data to the display.

[0056] Figure 1 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Example 1 of the present invention. The ultrasonic flowmeter proposed in this invention includes: a flow path body 1 having a flow path for a measured fluid, including a measuring flow path and a non-measuring flow path, with the measured fluid flowing from the left inlet to the right outlet of the flow path body 1; and an ultrasonic transceiver 2 and an ultrasonic transceiver 5, which are disposed at the upper end of the flow path body 1. In this embodiment, the ultrasonic transceiver includes an ultrasonic transducer, and both the ultrasonic transceiver 2 and the ultrasonic transceiver 5 have the function of either receiving or transmitting ultrasonic waves. The ultrasonic transceiver 5 transmits an ultrasonic wave, which passes through the acoustic window 4 and undergoes a single V-shaped reflection or a W-shaped reflection before being received by the ultrasonic transceiver 2. At the same time, the ultrasonic transceiver 2 transmits ultrasonic waves, which pass through the acoustic window 4 and undergo a V-shaped reflection or a W-shaped reflection, and are received by the ultrasonic transceiver 5. By measuring the propagation time in the downstream and upstream directions, the flow rate of the fluid passing through is calculated; the multi-layer portion is provided with a partition plate that divides the flow path body into multiple layers; the flow path body 1 is integrally formed with the multi-layer portion; the partition plate includes a transverse partition plate 3-1. In this embodiment, the partition plate is arranged in the middle or upper part of the flow path body 1. Therefore, the ultrasonic transceiver 5 transmits ultrasonic waves, which are received by the ultrasonic transceiver 2 after the W-shaped reflection of the transverse partition plate 3-1. Similarly, the ultrasonic transceiver 2 transmits ultrasonic waves, which are received by the ultrasonic transceiver 5 after the W-shaped reflection of the transverse partition plate 3-1.

[0057] Figure 2 This is a schematic diagram of the Z-direction cross-sectional structure of an ultrasonic flowmeter in the first embodiment of the present invention. The ultrasonic transceiver 2 and the ultrasonic transceiver 5 are located at the upper end of the flow path body 1.

[0058] Figure 3 This is a schematic diagram of the Y-section structure of an ultrasonic flowmeter in Example 1 of the present utility model. The multi-layer part includes only one transverse partition plate 3. The transverse partition plate 3 runs through the measuring flow path, opposite to the ultrasonic transceiver 2 and the ultrasonic transceiver 5. The two ends of the transverse partition plate 3 are respectively in contact with the left and right sides of the flow path body 1. While keeping the cross-sectional area of ​​the flow path body 1 constant, in order to solve the problem of flow velocity difference of cross-laminar turbulence, the flow channel will be designed into a narrow rectangle. However, in this case, the sound path between the ultrasonic transceiver 2 and the ultrasonic transceiver 5 will increase, and it will also bring about the problem of attenuation. This embodiment can solve this problem. By adding a transverse partition plate in the middle of the flow path body 1, it not only solves the problem of flow velocity difference of cross-laminar turbulence, but also solves the attenuation problem caused by the large sound path. At the same time, the non-measuring flow path can also increase the flow rate passing through, broadening the measurement range of the ultrasonic flowmeter.

[0059] Figure 4 This is the ultrasonic signal and sound path attenuation curve of gases with different sound velocities in Example 1 of the present invention. Lines of different colors represent the content of different gases. It can be seen from the figure that the shorter the sound path, the less the ultrasonic signal attenuation.

[0060] Example 2

[0061] Figure 5 This is an exploded view of an ultrasonic flowmeter, which includes a flow path body 1, ultrasonic transceivers 2 and 5, and a circuit board 8. The measured fluid flows from the inlet at one end of the flow path body 1 to the outlet at the other end. The ultrasonic transceivers 2 and 5 are located at the upper end of the flow path body 1 and are fixed to the ultrasonic transceiver mounting base 7 via an ultrasonic transceiver fixing bracket 6. The ultrasonic transceivers 2 and 5 continuously transmit or receive ultrasonic waves, thereby measuring the time in the downstream and upstream directions and calculating the flow rate. The circuit board 8 is fixed to the side of the flow path body 1 and is electrically connected to the ultrasonic transceivers 2 and 5. It simultaneously calculates the flow rate and outputs the data to the display.

[0062] Figure 6 、 Figure 7 and Figure 8Schematic diagrams of the X-, Z- and Y-direction cross-sectional structures of an ultrasonic flowmeter in a second embodiment of the present invention respectively. The present invention proposes an ultrasonic flowmeter, comprising: a flow path body 1, which has a flow path for a measured fluid to flow, the fluid flowing from an inlet at one end of the flow path body 1 to an outlet at the other end, including a measuring flow path and a non-measuring flow path; a pair of ultrasonic transceivers, which are arranged on the flow path body, and in this embodiment, include an ultrasonic transceiver 5 and an ultrasonic transceiver 2, which continuously transmit and receive ultrasonic waves, measure the time in the downstream and upstream directions, and output the relevant data to a circuit board 8 on the flow path body 1, and the circuit board 8 calculates the flow rate passing through and outputs it to a display screen; a multi-layer portion, which is provided with a partition plate that divides the flow path body into multiple layers; the flow path body and the multi-layer portion are integrally injection-molded; the multi-layer portion includes n longitudinal partition plates and m transverse partition plates; one end of the n longitudinal partition plates is fixed to the upper end of the flow path body, and the other end is in contact with the transverse partition plate; the two ends of the transverse partition plate are respectively fixed to the left and right sides of the flow path body. The number of longitudinal partitions n is greater than or equal to 2, and the number of transverse partitions m is greater than or equal to 1. The multi-layer portion includes two longitudinal partitions and one transverse partition; one end of the two longitudinal partitions is fixed to the upper end of the flow path body, and the other end abuts the transverse partition; the two ends of the transverse partition are respectively fixed to the left and right sides of the flow path body. The partitions include a transverse partition 3-2 and a longitudinal partition 9-2. The transverse partition runs through the measurement flow path, opposite the ultrasonic transceiver 5 and the ultrasonic transceiver 2. The longitudinal partition 9-2 and the transverse partition 3-2 abut and are perpendicular to each other. The multi-layer portion includes two longitudinal partitions 9-2 and one transverse partition 3-2; one end of the two longitudinal partitions 9-2 is fixed to the upper end of the flow path body 1, and the other end abuts the transverse partition 3-2; the two ends of the transverse partition 3-2 are respectively fixed to the left and right sides of the flow path body 1.

[0063] Figure 9 This is a schematic diagram of the Y-section structure of an ultrasonic flowmeter special-shaped flow channel structure in Example 2 of the present invention. The flow channel structure in the present invention is not limited to a rectangular or square shape, and can also include a shape with chamfers and a circular arc-shaped lower end face.

[0064] In this embodiment, the transverse partition plate 3 - 2 is provided at the lower portion of the flow path body 1 , so that the ultrasonic transceiver 5 transmits ultrasonic waves, which are received by the ultrasonic transceiver 2 after V-shaped reflection by the transverse partition plate 3 - 2 .

[0065] In this embodiment, transverse and longitudinal dividers are added. The transverse divider reduces the acoustic path of ultrasonic waves, while the longitudinal divider addresses the issue of velocity differences in cross-laminar turbulence caused by excessively wide flow paths. Furthermore, the addition of three non-measurement flow paths addresses the issue of high flow rates while ensuring measurement accuracy.

[0066] Example 3

[0067] Figure 5 This is an exploded view of an ultrasonic flowmeter, which includes a flow path body 1, ultrasonic transceivers 2 and 5, and a circuit board 8. The measured fluid flows from the inlet at one end of the flow path body 1 to the outlet at the other end. The ultrasonic transceivers 2 and 5 are located at the upper end of the flow path body 1 and are fixed to the ultrasonic transceiver mounting base 7 via an ultrasonic transceiver fixing bracket 6. The ultrasonic transceivers 2 and 5 continuously transmit or receive ultrasonic waves, thereby measuring the time in the downstream and upstream directions and calculating the flow rate. The circuit board 8 is fixed to the side of the flow path body 1 and is electrically connected to the ultrasonic transceivers 2 and 5. It simultaneously calculates the flow rate and outputs the data to the display.

[0068] Figure 10 、 Figure 11 and Figure 12The schematic cross-sectional structures of an ultrasonic flowmeter in the third embodiment of the present invention, taken along the X, Z, and Y directions, are shown. The present invention provides an ultrasonic flowmeter comprising: a flow path 1 having a flow path for a measured fluid, wherein the fluid flows from an inlet at one end of the flow path 1 to an outlet at the other end, including a measuring flow path and a non-measuring flow path; a pair of ultrasonic transceivers disposed on the flow path 1, which in this embodiment include an ultrasonic transceiver 5 and an ultrasonic transceiver 2, and which continuously transmit and receive ultrasonic waves, measure the time in the downstream and upstream directions, and output the relevant data to a circuit board 8 on the flow path 1. The circuit board 8 calculates the flow rate and outputs it to a display screen; a multi-layer portion having a partition plate that divides the flow path 1 into multiple layers; the flow path 1 and the multi-layer portion are integrally formed; the partition plates include a transverse partition plate and a longitudinal partition plate. The transverse partition plate extends through the measuring flow path, opposite the ultrasonic transceiver, and the longitudinal partition plate and the transverse partition plate abut against each other and are perpendicular to each other. The multilayer portion includes e longitudinal partitions and f transverse partitions; one end of each longitudinal partition is fixed to the upper or lower end of the flow path body, and the other end abuts against a transverse partition; both ends of each transverse partition abut against the other end of each longitudinal partition; the number of longitudinal partitions e ≥ 3, and the number of transverse partitions f ≥ 1. The multilayer portion includes three longitudinal partitions and one transverse partition; one end of each of the two longitudinal partitions is fixed to the upper end of the flow path body, and the other end abuts against a transverse partition; both ends of each transverse partition abut against the other end of each of the two longitudinal partitions; one end of each of the longitudinal partitions is fixed to the lower end of the flow path body, and the other end abuts against a transverse partition; the longitudinal and transverse partitions divide the flow path body into three independent flow paths, and the flow paths on both sides of the flow path body form an L-shape. The multilayer portion includes three longitudinal partitions and one transverse partition, which divide the flow path body into three independent flow paths. The flow paths on both sides of the flow path body form an L-shape.

[0069] In this embodiment, the transverse partition plate 3 - 3 is provided at the lower portion of the flow path body 1 , so that the ultrasonic transceiver 5 transmits ultrasonic waves, which are received by the ultrasonic transceiver 2 after being reflected in a V-shape by the transverse partition plate 3 - 3 .

[0070] In this embodiment, transverse and longitudinal dividers are added. The transverse divider reduces the acoustic path of ultrasonic waves, while the longitudinal divider addresses the issue of velocity differences in cross-laminar turbulence caused by excessively wide flow paths. Furthermore, the addition of three non-measurement flow paths addresses the issue of high flow rates while ensuring measurement accuracy.

[0071] Example 4

[0072] Figure 5This is an exploded view of an ultrasonic flowmeter, which includes a flow path body 1, ultrasonic transceivers 2 and 5, and a circuit board 8. The measured fluid flows from the inlet at one end of the flow path body 1 to the outlet at the other end. The ultrasonic transceivers 2 and 5 are located at the upper end of the flow path body 1 and are fixed to the ultrasonic transceiver mounting base 7 via an ultrasonic transceiver fixing bracket 6. The ultrasonic transceivers 2 and 5 continuously transmit or receive ultrasonic waves, thereby measuring the time in the downstream and upstream directions and calculating the flow rate. The circuit board 8 is fixed to the side of the flow path body 1 and is electrically connected to the ultrasonic transceivers 2 and 5. It simultaneously calculates the flow rate and outputs the data to the display.

[0073] Figure 13 、 Figure 14 and Figure 15 The schematic diagrams of the cross-sectional structure of an ultrasonic flowmeter in the fourth embodiment of the present invention, taken along the X, Z, and Y directions, respectively, are provided. The present invention provides an ultrasonic flowmeter comprising: a flow path 1 having a flow path for a measured fluid, wherein the fluid flows from an inlet at one end of the flow path 1 to an outlet at the other end, including a measuring flow path and a non-measuring flow path; a pair of ultrasonic transceivers disposed on the flow path 1, which in this embodiment include an ultrasonic transceiver 5 and an ultrasonic transceiver 2, and which continuously transmit and receive ultrasonic waves, measure the time in the downstream and upstream directions, and output the relevant data to a circuit board 8 on the flow path 1. The circuit board 8 calculates the flow rate and outputs it to a display screen; a multi-layer portion having a partition plate that divides the flow path 1 into multiple layers; the flow path 1 and the multi-layer portion are integrally formed; the partition plates include a transverse partition plate and a longitudinal partition plate. The transverse partition plate extends through the measuring flow path and faces the ultrasonic transceiver, and the longitudinal partition plate and the transverse partition plate abut each other and are perpendicular to each other. The multilayer portion includes a longitudinal partition plate and b transverse partition plates; the ends of the a longitudinal partition plate abut the upper and lower ends of the flow path body, respectively; the ends of the transverse partition plate abut the left and right sides of the flow path body, respectively; and the b transverse partition plates extend through the a longitudinal partition plate. The number of longitudinal partition plates a ≥ 2, and the number of transverse partition plates b ≥ 1. The multilayer portion includes two longitudinal partition plates and one transverse partition plate; the ends of the two longitudinal partition plates abut the upper and lower ends of the flow path body, respectively; the ends of the transverse partition plate abut the left and right sides of the flow path body, respectively; and the one transverse partition plate extends through the two longitudinal partition plates. The longitudinal and transverse partition plates divide the flow path body into six independent flow paths.

[0074] The multilayer portion includes two longitudinal partition plates and one transverse partition plate, which divide the flow path body into six independent flow paths.

[0075] In this embodiment, the transverse partition 3-4 is arranged in the middle or upper part of the flow path body 1. Therefore, the ultrasonic transceiver 5 transmits ultrasonic waves, which pass through the acoustic window 4 and are received by the ultrasonic transceiver 2 after W-shaped reflection by the transverse partition 3-3.

[0076] In this embodiment, transverse and longitudinal dividers are added. The transverse divider reduces the acoustic path of ultrasonic waves, while the longitudinal divider addresses the issue of velocity differences in cross-laminar turbulence caused by excessively wide flow paths. Furthermore, the addition of three non-measurement flow paths addresses the issue of high flow rates while ensuring measurement accuracy.

[0077] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are readily apparent to those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the appended claims.

Claims

1. An ultrasonic flow meter, comprising: A flow path body having a flow path for a measured fluid to flow, including a measuring flow path and a non-measuring flow path; a pair of ultrasonic transceivers disposed on the flow path body; a multi-layer portion provided with a partition plate for dividing the flow path body into multiple layers; The flow path body is integrally formed with the multilayer portion; It is characterized by: The partition plates include transverse partition plates.

2. An ultrasonic flowmeter according to claim 1, characterized in that: The transverse partition plate penetrates the measurement flow path and faces the ultrasonic transceiver.

3. An ultrasonic flowmeter according to claim 2, characterized in that: The two ends of the transverse partition plate are respectively in contact with the left side and the right side of the flow path body.

4. The ultrasonic flowmeter according to claim 2, characterized in that: The partition plate further comprises a longitudinal partition plate, and the longitudinal partition plate and the transverse partition plate are in contact with each other and are perpendicular to each other.

5. The ultrasonic flowmeter according to claim 4, characterized in that: The multi-layer portion includes n longitudinal partition plates and m transverse partition plates; one end of the n longitudinal partition plates is fixed to the upper end of the flow path body, and the other end is abutted against the transverse partition plate; the two ends of the transverse partition plate are respectively fixed to the left side and right side of the flow path body.

6. The ultrasonic flowmeter according to claim 5, characterized in that: The number of the longitudinal partition plates n≥2, and the number of the transverse partition plates m≥1.

7. The ultrasonic flowmeter according to claim 6, characterized in that: The multi-layer portion includes two longitudinal partition plates and one transverse partition plate; one end of the two longitudinal partition plates is fixed to the upper end of the flow path body, and the other end is in contact with the transverse partition plate; the two ends of the transverse partition plate are respectively fixed to the left and right sides of the flow path body.

8. The ultrasonic flowmeter according to claim 4, characterized in that: The multi-layer portion includes e longitudinal partition plates and f transverse partition plates; one end of the longitudinal partition plate is fixed to the upper end or lower end of the flow path body, and the other end abuts against the transverse partition plate; the two ends of the transverse partition plate respectively abut against the other end of the longitudinal partition plate.

9. The ultrasonic flowmeter according to claim 8, characterized in that: The number of the longitudinal partition plates e≥3, and the number of the transverse partition plates f≥1.

10. The ultrasonic flow meter according to claim 9, characterized in that: The multi-layer portion includes three longitudinal partition plates and one transverse partition plate; one end of the two longitudinal partition plates is fixed to the upper end of the flow path body, and the other end is abutted against the transverse partition plate; the two ends of the transverse partition plate are respectively abutted against the other ends of the two longitudinal partition plates; one end of the one longitudinal partition plate is fixed to the lower end of the flow path body, and the other end is abutted against the transverse partition plate, and the longitudinal partition plate and the transverse partition plate divide the flow path body into three independent flow paths.

11. The ultrasonic flowmeter according to claim 10, characterized in that: The flow paths on both sides of the flow path body are L-shaped.

12. The ultrasonic flow meter according to claim 4, characterized in that: The multi-layer portion includes a longitudinal partition plate and b transverse partition plates; the two ends of the a longitudinal partition plate are respectively abutted against the upper end and the lower end of the flow path body; the two ends of the transverse partition plate are respectively abutted against the left side and the right side of the flow path body, and the b transverse partition plates pass through the a longitudinal partition plate.

13. The ultrasonic flow meter according to claim 12, characterized in that: The number of the longitudinal partition plates a≥2, and the number of the transverse partition plates b≥1.

14. The ultrasonic flow meter according to claim 13, characterized in that: The multi-layer portion includes two longitudinal partitions and one transverse partition; the two ends of the two longitudinal partitions are respectively abutted against the upper end and the lower end of the flow path body; the two ends of the transverse partition are respectively abutted against the left side and the right side of the flow path body, and the one transverse partition passes through the two longitudinal partitions, and the longitudinal partitions and the transverse partitions divide the flow path body into six independent flow paths.

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