Ultrasonic flowmeter

Abstract

The present invention discloses an ultrasonic flow meter, comprising: a flow path body having a flow path through which a fluid to be measured flows, the flow path body including a measurement flow path and a non-measurement 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, the transverse flow guide plate is designed in the flow channel, under the condition that the size of an existing flow channel is not increased, the effect of stabilizing a flow field is achieved, meanwhile, ultrasonic signals are enhanced, attenuation of the ultrasonic signals 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 present invention relates to the technical field of ultrasonic measurement, and in particular to an ultrasonic flowmeter. 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. The time difference when the ultrasonic signal propagates downstream and upstream in the fluid is measured, and the flow rate of the gas is calculated based on the time difference. Then the amount of gas passing through the metering device per unit time is calculated based on the flow rate.

[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. Fig.16 As shown in the figure, when the fluid flows through a closed pipe section, it presents laminar flow at low flow velocity and transitions to turbulent flow as the flow velocity increases. The velocity profiles of these two flow states are different, and the velocity ratio is also different. The laminar flow and turbulent flow can differ by as much as 20%, which seriously affects the accurate measurement of the flow velocity across the laminar flow and turbulent flow. This effect is particularly serious for flow measurement in small-diameter pipe sections, where a pair of probes are usually used due to size and cost constraints.

[0004] Conventional solutions include: Solution 1: Fig.17 As shown in the figure, the flow channel is designed into a narrow rectangle so that the transducer probe can completely cover the flow measurement area. Solution 2: Fig.18 As shown in the figure, the entire flow field is evenly divided into multiple fluids by a partition, and 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 schemes have their disadvantages. The first scheme is to compress the width of the flow channel. Under the same cross-sectional area, the height of the flow channel is bound to increase significantly, increase the size of the flow channel, and increase the sound path between the two probes, which will bring about attenuation problems. Although the second scheme does not have the above problems, the guide partition in the fluid is bound to hinder the ultrasonic signal, and the requirements for the back-end amplification circuit are relatively high. At the same time, when there is bias flow or local eddy current in the flow field, the flow velocity of each fluid is not uniform, which is bound to cause measurement errors. Summary of the invention

[0005] The content of the invention introduces a series of simplified concepts, which will be further described in detail in the detailed description. The content of the invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt 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: a flow path body, which has a flow path for the measured fluid to flow, including a measuring flow path and a non-measuring flow path; a pair of ultrasonic transceivers, which are arranged on the flow path body; a multi-layer part, which is provided with a partition plate that divides the flow path body into multiple layers; the flow path body and the multi-layer part are integrally formed; the partition plate includes a transverse partition plate.

[0007] Preferably, the transverse partition plate passes through the measurement flow path and is opposite to the ultrasonic transceiver.

[0008] Preferably, two ends of the transverse partition plate are respectively in contact with the left side surface and the right side surface of the flow path body.

[0009] Preferably, the partition plate further comprises a longitudinal partition plate, and the longitudinal partition plate and the transverse partition plate are in abutment with each other and are perpendicular to each other.

[0010] Preferably, the multilayer portion includes n longitudinal partitions and m transverse partitions; one end of the n 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 fixed to the left and right sides of the flow path body.

[0011] Preferably, the number of the longitudinal partition plates n≥2, and the number of the transverse partition plates m≥1.

[0012] Preferably, the multilayer 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 is abutted against the transverse partition; the two ends of the transverse partition are respectively fixed to the left and right sides of the flow path body.

[0013] Preferably, the multi-layer portion includes e longitudinal partitions and f transverse partitions; one end of the longitudinal partition is fixed to the upper end or lower end of the flow path body, and the other end abuts against the transverse partition; the two ends of the transverse partition respectively abut against the other end of the longitudinal partition.

[0014] Preferably, the number of the longitudinal partition plates e≥3, and the number of the transverse partition plates f≥1.

[0015] 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.

[0016] Preferably, the flow paths on both sides of the flow path body are L-shaped.

[0017] Preferably, the multi-layer portion includes a longitudinal partition plates 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.

[0018] Preferably, the number of the longitudinal partition plates a≥2, and the number of the transverse partition plates b≥1.

[0019] 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.

[0020] Beneficial effects of the present invention: An ultrasonic flow meter proposed by the present invention is designed with a lateral guide plate 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 flow channels for increasing the measuring range are provided within the inlet and outlet size shape. 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 reduce the pressure loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings of the present invention are used to understand the present invention as part of the present invention. Embodiments of the present invention are shown in the drawings and the description thereof is used to explain the principle of the present invention.

[0022] In the attached figure:

[0023] Figure 1 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Embodiment 1 of the present invention;

[0024] Figure 2 This is a schematic diagram of the Z-direction cross-sectional structure of an ultrasonic flowmeter in Embodiment 1 of the present invention;

[0025] Figure 3 It is a schematic diagram of the Y-axis cross-sectional structure of an ultrasonic flowmeter in Embodiment 1 of the present invention;

[0026] Figure 4 is the ultrasonic signal and sound path attenuation curve of gases with different sound speeds in the first embodiment of the present invention;

[0027] Figure 5 It is an exploded diagram of an ultrasonic flow meter;

[0028] Figure 6 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Embodiment 2 of the present invention;

[0029] Figure 7 It is a schematic diagram of the Z-direction cross-sectional structure of an ultrasonic flowmeter in Embodiment 2 of the present invention;

[0030] Figure 8 It is a schematic diagram of the Y-axis cross-sectional structure of an ultrasonic flowmeter in Embodiment 2 of the present invention;

[0031] Fig. 9 It is a schematic diagram of the Y-direction cross-sectional structure of a special-shaped flow channel structure of an ultrasonic flow meter in Embodiment 2 of the present invention;

[0032] Fig.10 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Embodiment 3 of the present invention;

[0033] Fig.11 This is a schematic diagram of the Z-direction cross-sectional structure of an ultrasonic flowmeter in Embodiment 3 of the present invention;

[0034] Fig.12 It is a schematic diagram of the Y-axis cross-sectional structure of an ultrasonic flowmeter in Embodiment 3 of the present invention;

[0035] Fig.13 This is a schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in Embodiment 4 of the present invention;

[0036] Fig.14 This is a schematic diagram of the Z-direction cross-sectional structure of an ultrasonic flowmeter in Embodiment 4 of the present invention;

[0037] Fig.15 It is a schematic diagram of the Y-axis cross-sectional structure of an ultrasonic flowmeter in Embodiment 4 of the present invention;

[0038] Fig.16 is the velocity distribution diagram in the closed pipe;

[0039] Fig.17 It is a schematic diagram of the prior art solution 1;

[0040] Fig.18 It is a schematic diagram of the second prior art solution.

[0041] Description of reference numerals:

[0042] 1 flow path body 2 ultrasonic transceiver 3-1 horizontal partition plate

[0043] 3-2 horizontal partition 3-3 horizontal partition 3-4 horizontal partition

[0044] 4 Sound window 5 Ultrasonic transceiver 6 Ultrasonic transceiver fixing bracket

[0045] 7 Ultrasonic transceiver mounting seat 8 Circuit board 9-2 Longitudinal partition board

[0046] 9-3 longitudinal partition 9-4 longitudinal partition DETAILED DESCRIPTION

[0047] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0048] In order to fully understand the present invention, a detailed description will be provided in the following description. Obviously, the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The 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.

[0049] It should be noted that the terms used herein are only for 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, it indicates the presence of the features, wholes, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0050] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifications 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 the "second component", and the term "second component" itself does not imply the existence of the "first component".

[0051] 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.

[0052] Now, exemplary embodiments according to the present invention will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in a variety of different forms and should not be interpreted 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.

[0053] Embodiment 1

[0054] Figure 5 It is an exploded view of an ultrasonic flowmeter, which includes a flow path body 1, an ultrasonic transceiver 2, an ultrasonic transceiver 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 transceiver 2 and the ultrasonic transceiver 5 are located at the upper end of the flow path body 1, and are fixed on the ultrasonic transceiver mounting seat 7 through the ultrasonic transceiver fixing frame 6. The ultrasonic transceiver 2 and the ultrasonic transceiver 5 continuously send or receive ultrasonic waves, and then measure the time in the downstream and upstream directions, and calculate the flow rate passing through. The circuit board 8 is fixed to the side of the flow path body 1, and is electrically connected to the ultrasonic transceiver 2 and the ultrasonic transceiver 5, and simultaneously calculates the flow rate passing through, and outputs the data to the display screen.

[0055] Figure 1 The schematic diagram of the X-axis cross-sectional structure of an ultrasonic flowmeter in the first embodiment of the present invention is a ultrasonic flowmeter proposed in the present invention, comprising: a flow path body 1, which has a flow path for the measured fluid to flow, including a measuring flow path and a non-measuring flow path, and the measured fluid flows from the left inlet of the flow path body 1 to the right outlet; and also includes an ultrasonic transceiver 2 and an ultrasonic transceiver 5, which are arranged at the upper end of the flow path body 1. In this embodiment, the ultrasonic transceiver includes an ultrasonic transducer, and the ultrasonic transceiver 2 and the ultrasonic transceiver 5 have the function of receiving or transmitting ultrasonic waves. The ultrasonic transceiver 5 emits ultrasonic waves, which pass through the acoustic window 4, and are received by the ultrasonic transceiver 2 after a V-shaped reflection or a W-shaped reflection. At the same time, the ultrasonic transceiver 2 emits ultrasonic waves, which pass through the acoustic window 4 and are received by the ultrasonic transceiver 5 after a V-shaped reflection or a W-shaped reflection. The propagation time in the downstream and upstream directions is measured to calculate the flow rate of the fluid passing therethrough. The multi-layer portion is provided with a partition plate for dividing the fluid path body into multiple layers. The fluid path body 1 is integrally formed with the multi-layer portion. The partition plate includes a transverse partition plate 3-1. In the present embodiment, the partition plate is arranged at the middle or upper part of the fluid path body 1. Therefore, the ultrasonic transceiver 5 emits 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 emits ultrasonic waves, which are received by the ultrasonic transceiver 5 after the W-shaped reflection of the transverse partition plate 3-1.

[0056] Figure 2 This is a schematic diagram of the Z-direction cross-sectional structure of an ultrasonic flowmeter in Embodiment 1 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.

[0057] Figure 3 This is a schematic diagram of the Y-section structure of an ultrasonic flowmeter in the first embodiment of the present invention. The multilayer part includes only one transverse partition plate 3, which runs through the measuring flow path, opposite to the ultrasonic transceiver 2 and the ultrasonic transceiver 5, and 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. In order to solve the problem of flow velocity difference of cross-laminar turbulent flow while keeping the cross-sectional area of ​​the flow path body 1 constant, the flow channel will be designed into a narrow rectangle, but 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. A transverse partition plate is added in the middle of the flow path body 1, which not only solves the problem of flow velocity difference of cross-laminar turbulent flow, but also solves the attenuation problem caused by too large sound path. At the same time, the non-measurement flow path can also increase the flow rate passing through, broadening the measurement range of the ultrasonic flowmeter.

[0058] Figure 4 1 is an attenuation curve of ultrasonic signal and sound path of gases with different sound speeds in Example 1 of the present invention. Lines of different colors represent the contents of different gases. It can be seen from the figure that the shorter the sound path, the less the ultrasonic signal attenuates.

[0059] Embodiment 2

[0060] Figure 5 It is an exploded view of an ultrasonic flowmeter, which includes a flow path body 1, an ultrasonic transceiver 2, an ultrasonic transceiver 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 transceiver 2 and the ultrasonic transceiver 5 are located at the upper end of the flow path body 1, and are fixed on the ultrasonic transceiver mounting seat 7 through the ultrasonic transceiver fixing frame 6. The ultrasonic transceiver 2 and the ultrasonic transceiver 5 continuously send or receive ultrasonic waves, and then measure the time in the downstream and upstream directions, and calculate the flow rate passing through. The circuit board 8 is fixed to the side of the flow path body 1, and is electrically connected to the ultrasonic transceiver 2 and the ultrasonic transceiver 5, and simultaneously calculates the flow rate passing through, and outputs the data to the display screen.

[0061] Figure 6 , Figure 7 and Figure 8The schematic diagrams of the cross-sectional structure of an ultrasonic flow meter in the second embodiment of the present invention are respectively shown in the X-direction, Z-direction and Y-direction. The present invention proposes an ultrasonic flow meter, comprising: a flow path body 1, which has a flow path for the measured fluid to flow, the fluid flows 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, in this embodiment, including an ultrasonic transceiver 5 and an ultrasonic transceiver 2, both of which continuously transmit and receive ultrasonic waves, measure the time in the downstream direction and the upstream direction, and output the relevant data to the circuit board 8 on the flow path body 1, and the circuit board 8 calculates the flow rate passing through and outputs it to the display screen; a multi-layer part, which is provided with a partition plate for dividing the flow path body into multiple layers; the flow path body and the multi-layer part are integrally injection molded; the multi-layer part 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 the right side of the flow path body. The number of the longitudinal partitions n≥2, the number of the transverse partitions m≥1, and the multilayer 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 is in contact with 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 to the ultrasonic transceiver 5 and the ultrasonic transceiver 2. The longitudinal partition 9-2 and the transverse partition 3-2 are in contact and perpendicular to each other. The multilayer 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 is in contact with 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.

[0062] Fig. 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 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 at the lower end face.

[0063] In this embodiment, the transverse partition plate 3 - 2 is disposed at the lower portion of the flow path body 1 , so that the ultrasonic transceiver 5 emits ultrasonic waves, which are received by the ultrasonic transceiver 2 after being reflected in a V-shape by the transverse partition plate 3 - 2 .

[0064] In this embodiment, a transverse partition plate and a longitudinal partition plate are added. The transverse partition plate can reduce the sound path of ultrasonic propagation, and the longitudinal partition plate can solve the problem of flow velocity difference of cross-laminar turbulence caused by too wide flow channel. At the same time, adding three non-measurement flow paths solves the problem of large flow passing through and can also ensure the accuracy of measurement.

[0065] Embodiment 3

[0066] Figure 5 It is an exploded view of an ultrasonic flowmeter, which includes a flow path body 1, an ultrasonic transceiver 2, an ultrasonic transceiver 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 transceiver 2 and the ultrasonic transceiver 5 are located at the upper end of the flow path body 1, and are fixed on the ultrasonic transceiver mounting seat 7 through the ultrasonic transceiver fixing frame 6. The ultrasonic transceiver 2 and the ultrasonic transceiver 5 continuously send or receive ultrasonic waves, and then measure the time in the downstream and upstream directions, and calculate the flow rate passing through. The circuit board 8 is fixed to the side of the flow path body 1, and is electrically connected to the ultrasonic transceiver 2 and the ultrasonic transceiver 5, and simultaneously calculates the flow rate passing through, and outputs the data to the display screen.

[0067] Fig.10 , Fig.11 and Fig.12The schematic diagrams of the cross-sectional structure of an ultrasonic flowmeter in the third embodiment of the present invention in the X-direction, Z-direction and Y-direction are respectively provided. The present invention proposes an ultrasonic flowmeter, comprising: a flow path body 1, which has a flow path for the measured fluid to flow, the fluid flows from the inlet at one end of the flow path body 1 to the 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, in this embodiment, including an ultrasonic transceiver 5 and an ultrasonic transceiver 2, both of which continuously transmit and receive ultrasonic waves, measure the time in the downstream direction and the upstream direction, and output the relevant data to the circuit board 8 on the flow path body 1, and the circuit board 8 calculates the flow rate passing through and outputs it to the display screen; a multi-layer part, which is provided with a partition plate that divides the flow path body into multiple layers; the flow path body and the multi-layer part are integrally formed; the partition plate includes a transverse partition plate and a longitudinal partition plate. The transverse partition plate runs through the measuring flow path, opposite to the ultrasonic transceiver, and the longitudinal partition plate and the transverse partition plate are in contact and perpendicular to each other. The multilayer portion includes e longitudinal partitions and f transverse partitions; one end of the longitudinal partition is fixed to the upper end or the lower 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 end of the longitudinal partition, the number of the longitudinal partitions e≥3, the number of the transverse partitions f≥1, the multilayer portion includes 3 longitudinal partitions and 1 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, the longitudinal partition and the transverse partition divide the flow path body into 3 independent flow paths, and the flow paths on both sides of the flow path body are L-shaped. The multilayer portion includes 3 longitudinal partitions and 1 transverse partition, which divide the flow path body into 3 independent flow paths. The flow paths on both sides of the flow path body are L-shaped.

[0068] In this embodiment, the transverse partition plate 3 - 3 is disposed at the lower portion of the flow path body 1 , so that the ultrasonic transceiver 5 emits ultrasonic waves, which are received by the ultrasonic transceiver 2 after being reflected in a V-shape by the transverse partition plate 3 - 3 .

[0069] In this embodiment, a transverse partition plate and a longitudinal partition plate are added. The transverse partition plate can reduce the sound path of ultrasonic propagation, and the longitudinal partition plate can solve the problem of flow velocity difference of cross-laminar turbulence caused by too wide flow channel. At the same time, adding three non-measurement flow paths solves the problem of large flow passing through and can also ensure the accuracy of measurement.

[0070] Embodiment 4

[0071] Figure 5It is an exploded view of an ultrasonic flowmeter, which includes a flow path body 1, an ultrasonic transceiver 2, an ultrasonic transceiver 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 transceiver 2 and the ultrasonic transceiver 5 are located at the upper end of the flow path body 1, and are fixed on the ultrasonic transceiver mounting seat 7 through the ultrasonic transceiver fixing frame 6. The ultrasonic transceiver 2 and the ultrasonic transceiver 5 continuously send or receive ultrasonic waves, and then measure the time in the downstream and upstream directions, and calculate the flow rate passing through. The circuit board 8 is fixed to the side of the flow path body 1, and is electrically connected to the ultrasonic transceiver 2 and the ultrasonic transceiver 5, and simultaneously calculates the flow rate passing through, and outputs the data to the display screen.

[0072] Fig.13 , Fig.14 and Fig.15 The schematic diagrams of the cross-sectional structure of an ultrasonic flowmeter in the fourth embodiment of the present invention in the X-direction, Z-direction and Y-direction are respectively provided. The present invention proposes an ultrasonic flowmeter, comprising: a flow path body 1, which has a flow path for the measured fluid to flow, the fluid flows from the inlet at one end of the flow path body 1 to the 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, in this embodiment, including an ultrasonic transceiver 5 and an ultrasonic transceiver 2, which continuously transmit and receive ultrasonic waves, measure the time in the downstream direction and the upstream direction, and output the relevant data to the circuit board 8 on the flow path body 1, and the circuit board 8 calculates the flow rate passing through and outputs it to the display screen; a multi-layer part, which is provided with a partition plate that divides the flow path body into multiple layers; the flow path body and the multi-layer part are integrally formed; the partition plate includes a transverse partition plate and a longitudinal partition plate. The transverse partition plate runs through the measuring flow path, opposite to the ultrasonic transceiver, and the longitudinal partition plate and the transverse partition plate are in contact and perpendicular to each other. The multilayer portion includes a longitudinal partition plates and b transverse partition plates; the two ends of the a longitudinal partition plates abut against the upper end and the lower end of the flow path body respectively; the two ends of the transverse partition plates abut against the left side and the right side of the flow path body respectively, and the b transverse partition plates penetrate the a longitudinal partition plates. The number of the longitudinal partition plates a≥2, and the number of the transverse partition plates b≥1. The multilayer portion includes 2 longitudinal partition plates and 1 transverse partition plate; the two ends of the 2 longitudinal partition plates abut against the upper end and the lower end of the flow path body respectively; the two ends of the transverse partition plates abut against the left side and the right side of the flow path body respectively, and the 1 transverse partition plate penetrates the 2 longitudinal partition plates, and the longitudinal partition plates and the transverse partition plates divide the flow path body into 6 independent flow paths.

[0073] The multilayer portion includes two longitudinal partition plates and one transverse partition plate, which divide the flow path body into six independent flow paths.

[0074] 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 emits 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.

[0075] In this embodiment, a transverse partition plate and a longitudinal partition plate are added. The transverse partition plate can reduce the sound path of ultrasonic propagation, and the longitudinal partition plate can solve the problem of flow velocity difference of cross-laminar turbulence caused by too wide flow channel. At the same time, adding three non-measurement flow paths solves the problem of large flow passing through and can also ensure the accuracy of measurement.

[0076] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments 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 flow meter, comprising: A flow path body having a flow path for a measured fluid to flow, including a measurement flow path and a non-measurement 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 in that 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 is opposite to the ultrasonic transceiver.

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

4. An ultrasonic flow meter 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. An ultrasonic flow meter according to claim 4, characterized in that: The multilayer portion includes n longitudinal partitions and m transverse partitions; one end of the n 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 fixed to the left and right sides of the flow path body.

6. An ultrasonic flow meter 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. An ultrasonic flow meter according to claim 6, characterized in that: The multilayer 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 is abutted against the transverse partition; the two ends of the transverse partition are respectively fixed to the left and right sides of the flow path body.

8. An ultrasonic flow meter according to claim 4, characterized in that: The multilayer 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 the 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.

9. An ultrasonic flow meter 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. An ultrasonic flow meter according to claim 9, characterized in that: 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 plate, and the longitudinal partition plate and the transverse partition plate divide the flow path body into three independent flow paths.

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

12. An ultrasonic flow meter according to claim 4, characterized in that: The multi-layer portion includes a longitudinal partition plates 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 penetrate the a longitudinal partition plate.

13. An 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. An 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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