Clamping pipe split type ultrasonic flowmeter

Abstract

The utility model discloses a pipe clamping split type ultrasonic flowmeter. Comprising a first shell, a second shell, a first bracket, a second bracket, a first probe, a second probe, a first coupling pad and a second coupling pad, the first coupling pad and the second coupling pad are used for abutting against the pipeline, and the first shell and the second shell are arranged on the peripheries of the first support and the second support respectively so that the first support, the second support, the first probe, the second probe, the first coupling pad and the second coupling pad can surround the periphery of the pipeline. In the application, the first coupling pad and the second coupling pad can be tightly attached to the outer wall of the pipeline, so that the problem that the first coupling pad and the second coupling pad are not tightly contacted with the pipeline due to too loose force is avoided. The first probe and the second probe are fixed through the first shell, the first support, the second shell and the second support respectively, the situation that a pipeline is too tight is avoided, deformation of the pipeline is avoided, and then the accuracy of flow measurement in the pipeline is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of flow measurement in pipelines, and in particular to a pipe clamp split type ultrasonic flow meter. Background Art

[0002] A pipeline flow meter is an instrument used to measure the flow rate of a fluid (liquid or gas) passing through a pipeline. It is widely used in the fields of industry, chemical industry, petroleum, natural gas, water treatment, etc. Pipeline flow meters include turbine flow meters, electromagnetic flow meters, ultrasonic flow meters, etc.

[0003] Ultrasonic flowmeters are based on the propagation time difference of ultrasonic waves or the Doppler effect. The propagation time difference method uses the effect of fluid flow on the propagation time of ultrasonic waves. Two ultrasonic sensors (probes) are installed at the upstream and downstream positions of the pipeline respectively. When ultrasonic waves propagate in the fluid, if the fluid flows, the propagation time in the downstream direction will be shorter than the propagation time in the upstream direction. By measuring the propagation time difference of ultrasonic waves in the downstream and upstream directions, the flow rate of the fluid can be calculated, and then the flow rate can be obtained. The Doppler law uses the Doppler effect, that is, when ultrasonic waves propagate in the fluid, the frequency changes when encountering tiny particles or bubbles in the fluid. By measuring the change in frequency, the flow rate and flow rate of the fluid can be calculated.

[0004] Ultrasonic flowmeters can usually be installed by clamping them on the outside of the pipe, without cutting the pipe, thus avoiding the risk of leakage and contamination. However, the existing method of installing ultrasonic flowmeters on pipes is usually to install them on hard pipes. When applied to flexible pipes, if the ultrasonic flowmeter is installed too tightly, the pipe will be flattened, resulting in inaccurate flow measurement. If it is installed too loosely, the close contact between the coupling pad and the pipe cannot be ensured, which also causes inaccurate flow measurement. Utility Model Content

[0005] The main technical problem solved by the present application is to provide a tube clamp split ultrasonic flow meter to solve the problem that when the flow meter is used in a flexible pipeline, the measurement accuracy cannot be guaranteed due to the excessively tight or loose fixation.

[0006] In order to solve the above technical problems, a technical solution adopted in the present application is to provide a tube-clamped split ultrasonic flowmeter, including a first shell, a second shell, a first bracket, a second bracket, a first probe, a second probe, a first coupling pad and a second coupling pad; the first coupling pad and the second coupling pad are arranged opposite to each other, used to abut against the pipeline and contact with the pipeline surface; the first bracket and the second bracket are respectively arranged on the periphery of the first coupling pad and the second coupling pad; the first probe is arranged between the first bracket and the first shell, and the measuring end of the first probe passes through the first bracket and abuts against the outer surface of the first coupling pad; the second probe is arranged between the second bracket and the second shell, and the measuring end of the second probe passes through the second bracket and abuts against the outer surface of the second coupling pad; the first shell and the second shell are respectively arranged on the periphery of the first bracket and the second bracket, and the first shell and the second shell are detachably connected to enclose the first bracket, the second bracket, the first probe, the second probe, the first coupling pad and the second coupling pad around the pipeline.

[0007] In some embodiments, the contact between the pipe and the first bracket, the second bracket, the first shell and / or the second shell is a line contact or a point contact.

[0008] In some embodiments, the cross-sectional shape formed by the first shell and the second shell, and the cross-sectional shape formed by the first bracket and the second bracket are both regular polygons.

[0009] In some embodiments, the cross-sectional shape formed by the first shell and the second shell, and the cross-sectional shape formed by the first bracket and the second bracket are both regular octagons.

[0010] In some embodiments, the first shell is provided with a first outer groove adapted to the first bracket, and a first inner groove adapted to the first probe, the first outer groove is located on the periphery of the first inner groove, the first bracket is provided with a first clamping hole, the first bracket is clamped at the first outer groove, the first probe is pressed into the first outer groove, the measuring end of the first probe passes through the first clamping hole and abuts against the outer surface of the first coupling pad, the inner surface of the first coupling pad is used to abut the pipeline and contact with the pipeline surface; the second shell is provided with a second outer groove adapted to the second bracket, and a second inner groove adapted to the second probe, the second outer groove is located on the periphery of the second inner groove, the second bracket is provided with a second clamping hole, the second bracket is clamped at the second outer groove, the second probe is pressed into the second outer groove, the measuring end of the second probe passes through the second clamping hole and abuts against the outer surface of the second coupling pad, the inner surface of the second coupling pad is used to abut the pipeline and contact with the pipeline surface.

[0011] In some embodiments, the first bracket and / or the second bracket is square in shape, one corner of the first bracket and / or the second bracket is different in shape from the other three corners, and the shape of the first outer groove or the second outer groove corresponds to the shape of the first bracket or the second bracket.

[0012] In some embodiments, the first probe and / or the second probe is square in shape, one corner of the first probe and / or the second probe is different in shape from the other three corners, and the shape of the first inner groove or the second inner groove corresponds to the shape of the first probe or the second probe.

[0013] In some embodiments, a positioning pin is provided on the first shell or the second shell, and a positioning hole is provided on the corresponding second shell or the first shell. The positioning pin and the positioning hole cooperate to align the first shell and the second shell.

[0014] In some embodiments, coupling grooves are provided on the inner surfaces of the first bracket and the second bracket, and the shapes of the coupling grooves are adapted to the shapes of the first coupling pad and the second coupling pad; a clamping groove is provided on the inner wall of the first coupling pad, and the clamping groove is adapted to the cross-section of the pipe; a clamping portion protrudes from the middle of the outer wall of the first coupling pad, and the measuring end of the first probe abuts against the clamping portion, and protruding connecting portions are provided on both sides of the clamping portion; a connecting hole is provided at a corresponding position on the first bracket, and the connecting portion is inserted into the connecting hole to fix the first coupling pad.

[0015] In some embodiments, the flow meter also includes a third shell, which is detachably connected to the second shell, and the second shell is located between the first shell and the third shell; a receiving groove is provided on the inner wall of the third shell, and a measuring circuit board is provided in the receiving groove, and the measuring circuit board is electrically connected to the first probe and the second probe.

[0016] The beneficial effect of the present application is as follows: in the present application, the first probe, the first bracket and the first coupling pad, as well as the second probe, the second bracket and the second coupling pad, are sequentially arranged around the periphery of the pipeline through the first shell and the second shell, and the first coupling pad and the second coupling pad are in contact with the pipeline surface. When applied to a flexible pipeline, the first coupling pad and the second coupling pad can be tightly fitted with the outer wall of the pipeline to avoid the problem that the first coupling pad and the second coupling pad are not in tight contact with the pipeline due to too loose force. The first probe and the second probe are fixed respectively by the first shell and the first bracket, and the second shell and the second bracket, which ensures the firmness of the first probe and the second probe, avoids applying the fixing force of the first probe and the second probe to the pipeline, avoids the situation of applying too tight to the pipeline, avoids the deformation of the pipeline, and thus ensures the accuracy of the flow measurement in the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural schematic diagram according to an embodiment of the present application;

[0018] Figure 2 is a schematic diagram of an explosion structure according to an embodiment of the present application;

[0019] Figure 3 is a schematic diagram of a top view structure according to an embodiment of the present application;

[0020] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure in the AA direction;

[0021] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure in the middle BB direction;

[0022] Figure 6 is a schematic diagram of a side structure of a first housing according to an embodiment of the present application;

[0023] Figure 7 is a structural schematic diagram of another side surface of the first housing according to an embodiment of the present application;

[0024] Figure 8 is a structural schematic diagram of a side surface of a second housing according to an embodiment of the present application;

[0025] Fig. 9 is a structural schematic diagram of another side surface of the second housing according to an embodiment of the present application;

[0026] Fig.10 is a structural schematic diagram of a side surface of a third housing according to an embodiment of the present application;

[0027] Fig.11 is a structural schematic diagram of another side surface of the third housing according to an embodiment of the present application;

[0028] Fig.12 is a structural schematic diagram of a side surface of a first bracket according to an embodiment of the present application;

[0029] Fig.13 is a structural schematic diagram of another side surface of the first bracket according to an embodiment of the present application;

[0030] Fig.14 is a structural schematic diagram of a side surface of a first probe according to an embodiment of the present application;

[0031] Fig.15 is a structural schematic diagram of another side of the first probe according to an embodiment of the present application;

[0032] Fig.16 is a schematic structural diagram of a first coupling pad according to an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. The preferred embodiments of the present application are provided in the accompanying drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0034] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0035] For the description of this application, the non-limiting Figure 1 The marks "front", "rear", "up", "down", "left" and "right" shown in the figure are used to facilitate understanding of the embodiment and are not intended to limit the present application. Among them, the front-to-back direction represents the longitudinal direction, the left-to-right direction represents the transverse direction, and the up-down direction represents the vertical direction.

[0036] Figure 1-Figure 16 The embodiment of the clamp-tube split ultrasonic flowmeter of the present application is shown, comprising a first housing 1, a second housing 2, a third housing 3, a first bracket 4, a second bracket 5, a first probe 6, a second probe 7, a first coupling pad 8 and a second coupling pad 9; the second housing 2 is located between the first housing 1 and the third housing 3. The first probe 6 is used as a transmitting end, and the second probe 7 is used as a receiving end. The first probe 6 is arranged on the first bracket 4, and the second probe 7 is arranged on the second bracket 5. The first coupling pad 8 and the second coupling pad 9 are arranged opposite to each other, and are used to abut against the pipeline 100 and make surface contact with the pipeline 100; the first bracket 4 and the second bracket 5 are respectively arranged on the periphery of the first coupling pad 8 and the second coupling pad 9, the first probe 6 is arranged between the first bracket 4 and the first shell 1, and the measuring end 61 of the first probe 6 passes through the first bracket 4 and abuts against the outer surface of the first coupling pad 8; the second probe 7 is arranged between the second bracket 5 and the second shell 2, and the measuring end 61 of the second probe 7 passes through the second bracket 5 and abuts against the outer surface of the second coupling pad 9; the first shell 1 and the second shell 2 are respectively arranged on the periphery of the first bracket 4 and the second bracket 5, and the first shell 1 is detachably connected to enclose the first bracket 4, the second bracket 5, the first probe 6, the second probe 7, the first coupling pad 8 and the second coupling pad 9 around the periphery of the pipeline 100.

[0037] In the present application, the first probe 6, the first bracket 4 and the first coupling pad 8, and the second probe 7, the second bracket 5 and the second coupling pad 9 are sequentially arranged around the periphery of the pipeline 100 by the first shell 1 and the second shell 2. The first coupling pad 8 and the second coupling pad 9 are in surface contact with the pipeline 100. When applied to the flexible pipeline 100, the first coupling pad 8 and the second coupling pad 9 can be closely fitted with the outer wall of the pipeline 100 to avoid the problem that the first coupling pad 8 and the second coupling pad 9 are not in close contact with the pipeline 100 due to too loose force. The first probe 6 and the second probe 7 are fixed by the first shell 1 and the first bracket 4, and the second shell 2 and the second bracket 5, respectively, which ensures the firmness of the fixing of the first probe 6 and the second probe 7, and avoids applying the fixing force of the first probe 6 and the second probe 7 to the pipeline 100, avoids the situation of applying too tight to the pipeline 100, and avoids the deformation of the pipeline 100, thereby ensuring the accuracy of the flow measurement in the pipeline 100.

[0038] In some embodiments, Figure 2 and Figure 6 As shown, the first shell 1 is provided with a first outer groove 11 adapted to the first bracket 4, and a first inner groove 12 adapted to the first probe 6, the first outer groove 11 is located at the periphery of the first inner groove 12, and the first bracket 4 is provided with a first clamping hole 41, the first bracket 4 is clamped at the first outer groove 11, and the first probe 6 is pressed into the first outer groove 11, and the measuring end 61 of the first probe 6 passes through the first clamping hole 41 and abuts against the outer surface of the first coupling pad 8, and the inner surface of the first coupling pad 8 is used to abut against the pipe 100 and contact the pipe 100 surface.

[0039] In some embodiments, Figure 2 and Figure 8 As shown, the second shell 2 is provided with a second outer groove 21 adapted to the second bracket 5, and a second inner groove 22 adapted to the second probe 7, the second outer groove 21 is located at the periphery of the second inner groove 22, and the second bracket 5 is provided with a second clamping hole (not marked in the figure), the second bracket 5 is clamped at the second outer groove 21, and the second probe 7 is pressed into the second outer groove 21, and the measuring end 61 of the second probe 7 passes through the second clamping hole and abuts against the outer surface of the second coupling pad 9, and the inner surface of the second coupling pad 9 is used to abut against the pipe 100 and contact the pipe 100 surface.

[0040] The shape formed by the first coupling pad 8 and the second coupling pad 9 is adapted to the cross-sectional shape of the pipe 100 .

[0041] The cross-sectional shape formed by the first bracket 4 and the second bracket 5 is a regular polygon. The cross-sectional shape formed by the first shell 1 and the second shell 2 is a regular polygon.

[0042] In some embodiments, Figure 2 and Figure 6 As shown, the first shell 1 on the left and right sides of the first outer groove 11 is provided with a first adapting groove 13, and the second shell 2 on the left and right sides of the second outer groove 21 is provided with a second adapting groove 23. The first adapting groove 13 and the second adapting groove 23 are arranged opposite to each other and enclosed in the periphery of the pipe 100. The shape enclosed by the first adapting groove 13 and the second adapting groove 23 is a regular polygon, which can be a square, a regular pentagon, a regular octagon, etc. The regular polygon can be set to avoid close contact between the pipe 100 and the first shell 1 and the second shell 2, and change the surface contact between the pipe 100 and the first shell 1 and the second shell 2 to line contact or point contact. When the pipe 100 is in surface contact with the first shell 1 and the second shell 2, there may be an uneven shape of the pipe 100 and a deviation, which makes it easy for the pipe 100 and the first shell 1 and the second shell 2 to be offset when fixed, and the pipe 100 cannot be located at the center of the enclosed by the first shell 1 and the second shell 2. By using a regular polygonal enclosure, the surface contact is changed into a line contact or a point contact. Even if the shape of the pipe 100 deviates, the pipe 100 can still be accurately clamped at the center of the enclosure between the first shell 1 and the second shell 2 to avoid eccentricity of the pipe 100 relative to the first shell 1 and the second shell 2, thereby ensuring the accuracy of flow detection.

[0043] In some embodiments, Figure 2 and Fig.13 As shown, the first bracket 4 and the second bracket 5 have the same shape. The first bracket 4 is used as an example for explanation. The first bracket 4 on the left and right sides of the first clamping hole 41 is provided with a third adapter groove 42, and the second bracket 5 on the left and right sides of the second clamping hole is provided with a fourth adapter groove. The third adapter groove 42 is arranged opposite to the fourth adapter groove and is enclosed on the periphery of the pipe 100. The shape enclosed by the third adapter groove 42 and the fourth adapter groove is a regular polygon, which can be a square, a regular pentagon, a regular octagon, etc. The third adapter groove 42 and the fourth adapter groove are respectively located on the inner side of the first adapter groove 13 and the second adapter groove 23. When the pipe 100 is enclosed, the third adapter groove 42 and the fourth adapter groove are aligned with the first adapter groove 13 and the second adapter groove 23. Thus, the pipe 100 is further enclosed by the first bracket 4 and the second bracket 5 to avoid eccentricity of the pipe 100 relative to the first bracket 4 and the second bracket 5, thereby ensuring the accuracy of flow detection.

[0044] In some embodiments, Figure 2 and Fig.13As shown, the shape of the first bracket 4 and / or the second bracket 5 is square, and the corresponding first outer groove 11 or second outer groove 21 is also square. One corner of the first bracket 4 and / or the second bracket 5 is different from the shape of the other three corners. The shape of the first outer groove 11 or the second outer groove 21 corresponds to the shape of the first bracket 4 or the second bracket 5. Therefore, it can be intuitively confirmed that the first bracket 4 and / or the second bracket 5 corresponds to the direction of the first outer groove 11 or the second outer groove 21, thereby avoiding the first bracket 4 and / or the second bracket 5 being installed in the wrong direction, which affects the installation efficiency.

[0045] In some embodiments, one of the four corners of the first bracket 4 and the second bracket 5 is chamfered, and the corresponding first outer groove 11 and second outer groove 21 are adapted to the chamfer, thereby intuitively confirming the installation direction of the first bracket 4 and the second bracket 5, so as to quickly install the first bracket 4 and the second bracket 5.

[0046] In some embodiments, Figure 2 and Fig.15 As shown, the shape of the first probe 6 and / or the second probe 7 is square, and the corresponding first inner groove 12 or second inner groove 22 is also square. One corner of the first probe 6 and / or the second probe 7 is different from the shape of the other three corners. The shape of the first inner groove 12 or the second inner groove 22 corresponds to the shape of the first probe 6 or the second probe 7. Therefore, it can be intuitively confirmed that the first probe 6 and / or the second probe 7 corresponds to the direction of the first inner groove 12 or the second inner groove 22, thereby avoiding the first probe 6 and / or the second probe 7 being installed in the wrong direction, which affects the installation efficiency.

[0047] In some embodiments, one of the four corners of the first probe 6 and the second probe 7 is chamfered, and the corresponding first inner groove 12 and second inner groove 22 are adapted to the chamfer, thereby intuitively confirming the installation direction of the first probe 6 and the second probe 7 to quickly install the first probe 6 and the second probe 7.

[0048] In some embodiments, Figure 2 , Fig.13 and Fig.16As shown, the inner surfaces of the first bracket 4 and the second bracket 5 are both provided with coupling grooves 43, and the shape of the coupling grooves 43 is adapted to the shape of the first coupling pad 8 and the second coupling pad 9. The first coupling pad 8 and the second coupling pad 9 have the same shape, and the inner wall of the first coupling pad 8 is provided with a clamping groove 81, and the clamping groove 81 is adapted to the cross section of the pipeline 100. A pressing portion 82 is protruded from the middle of the outer wall of the first coupling pad 8, and the pressing portion 82 extends in the left and right directions. The measuring end 61 of the first probe 6 abuts against the pressing portion 82, and protruding connecting portions 83 are provided on both sides of the pressing portion 82. The inner end of the connecting portion 83 is cylindrical, and the outer end is spherical. The diameter of the outer end is larger than the diameter of the inner end. A connecting hole 44 is provided at a corresponding position on the first bracket 4, and the connecting portion 83 is inserted into the connecting hole 44, thereby fixing the first coupling pad 8. The first coupling pad 8 and the second coupling pad 9 are made of flexible materials, which can be rubber, plastic, etc.

[0049] In some embodiments, Figure 2 and Fig. 9 As shown, a positioning pin 24 is provided on the first shell 1 or the second shell 2, and a positioning hole 14 is provided on the corresponding second shell 2 or the first shell 1. Through the cooperation of the positioning pin 24 and the positioning hole 14, the first shell 1 and the second shell 2 are aligned, and it can be distinguished which is the first shell 1 or the second shell 2 to avoid wrong installation.

[0050] In some embodiments, Figure 2 and Fig.11 As shown, a receiving groove 31 is provided on the inner wall of the third housing 3, and a measuring circuit board 32 is provided in the receiving groove 31. The measuring circuit board 32 is electrically connected to the first probe 6 and the second probe 7 through a connecting line 33, so as to transmit the signals detected by the first probe 6 and the second probe 7 to the measuring instrument for display. An external measuring instrument can be connected through an external connecting line 101. A transparent panel 34 is provided on the outer surface of the third housing 3, and the measuring circuit board 32 can be displayed through the transparent panel 34.

[0051] In some embodiments, Figure 2 As shown, the first shell 1, the second shell 2 and the third shell 3 are all in a square structure, the first shell 1 is detachably connected to the second shell 2, the second shell 2 is detachably connected to the third shell 3, the first shell 1 is detachably connected to the first bracket 4, and the second shell 2 is detachably connected to the second bracket 5, and the detachable connection can be achieved by bolts, buckles, etc. A sealing gasket 102 can also be set at the above-mentioned detachable connection to prevent water.

[0052] It can be seen that the present application discloses a pipe clamp split ultrasonic flowmeter. In the present application, the first probe, the first bracket and the first coupling pad, as well as the second probe, the second bracket and the second coupling pad are sequentially arranged around the periphery of the pipeline through the first shell and the second shell. The first coupling pad and the second coupling pad are in contact with the pipeline surface. When applied to a flexible pipeline, the first coupling pad and the second coupling pad can be tightly fitted with the outer wall of the pipeline to avoid the problem that the first coupling pad and the second coupling pad are not in close contact with the pipeline due to too loose force. The first probe and the second probe are fixed by the first shell and the first bracket, and the second shell and the second bracket, respectively, which ensures the firmness of the first probe and the second probe, avoids applying the fixing force of the first probe and the second probe to the pipeline, avoids the situation of applying too tight to the pipeline, avoids the deformation of the pipeline, and thus ensures the accuracy of the flow measurement in the pipeline.

[0053] The above are merely embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structural transformations made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A clamp-tube split ultrasonic flowmeter, characterized in that: It includes a first shell, a second shell, a first bracket, a second bracket, a first probe, a second probe, a first coupling pad and a second coupling pad; The first coupling pad and the second coupling pad are arranged opposite to each other and are used to abut against the pipeline and contact with the pipeline surface; The first bracket and the second bracket are respectively arranged on the periphery of the first coupling pad and the second coupling pad; The first probe is arranged between the first bracket and the first shell, and the measuring end of the first probe passes through the first bracket and abuts against the outer surface of the first coupling pad; the second probe is arranged between the second bracket and the second shell, and the measuring end of the second probe passes through the second bracket and abuts against the outer surface of the second coupling pad; The first shell and the second shell are respectively arranged on the periphery of the first bracket and the second bracket, and the first shell is detachably connected to the second shell to enclose the first bracket, the second bracket, the first probe, the second probe, the first coupling pad and the second coupling pad around the pipe.

2. The clamp-tube split ultrasonic flowmeter according to claim 1, characterized in that: The contact between the pipeline and the first bracket, the second bracket, the first shell and / or the second shell is line contact or point contact.

3. The clamp-tube split ultrasonic flowmeter according to claim 2, characterized in that: The cross-sectional shape formed by the first shell and the second shell, and the cross-sectional shape formed by the first bracket and the second bracket are both regular polygons.

4. The clamp-tube split ultrasonic flowmeter according to claim 3, characterized in that: The cross-sectional shape formed by the first shell and the second shell, and the cross-sectional shape formed by the first bracket and the second bracket are both regular octagons.

5. The clamp-tube split ultrasonic flowmeter according to claim 1, characterized in that: The first housing is provided with a first outer groove adapted to the first bracket and a first inner groove adapted to the first probe, the first outer groove is located at the periphery of the first inner groove, the first bracket is provided with a first clamping hole, the first bracket is clamped at the first outer groove, the first probe is pressed into the first outer groove, the measuring end of the first probe passes through the first clamping hole and abuts against the outer surface of the first coupling pad, and the inner surface of the first coupling pad is used to abut against the pipeline and contact with the pipeline surface; The second shell is provided with a second outer groove adapted to the second bracket, and a second inner groove adapted to the second probe, the second outer groove is located at the periphery of the second inner groove, the second bracket is provided with a second clamping hole, the second bracket is clamped at the second outer groove, the second probe is pressed into the second outer groove, the measuring end of the second probe passes through the second clamping hole and abuts against the outer surface of the second coupling pad, and the inner surface of the second coupling pad is used to abut against the pipeline and contact with the pipeline surface.

6. The clamp-tube split ultrasonic flowmeter according to claim 5, characterized in that: The first bracket and / or the second bracket are in a square shape, one corner of the first bracket and / or the second bracket is different in shape from the other three corners, and the shape of the first outer groove or the second outer groove corresponds to the shape of the first bracket or the second bracket.

7. The clamp-tube split ultrasonic flowmeter according to claim 5, characterized in that: The first probe and / or the second probe is in a square shape, one corner of the first probe and / or the second probe is different in shape from the other three corners, and the shape of the first inner groove or the second inner groove corresponds to the shape of the first probe or the second probe.

8. The clamp-tube split ultrasonic flowmeter according to claim 1, characterized in that: A positioning pin is provided on the first shell or the second shell, and a positioning hole is provided on the corresponding second shell or the first shell. The positioning pin cooperates with the positioning hole to align the first shell and the second shell.

9. The clamp-tube split ultrasonic flowmeter according to claim 1, characterized in that: The inner surfaces of the first bracket and the second bracket are both provided with coupling grooves, and the shapes of the coupling grooves are adapted to the shapes of the first coupling pad and the second coupling pad; the inner wall of the first coupling pad is provided with a clamping groove, and the clamping groove is adapted to the cross-section of the pipeline; a clamping portion protrudes from the middle of the outer wall of the first coupling pad, and the measuring end of the first probe abuts against the clamping portion, and protruding connecting portions are provided on both sides of the clamping portion; a connecting hole is provided at a corresponding position on the first bracket, and the connecting portion is inserted into the connecting hole to fix the first coupling pad.

10. The clamp-tube split ultrasonic flowmeter according to claim 1, characterized in that: The flow meter also includes a third shell, which is detachably connected to the second shell, and the second shell is located between the first shell and the third shell; a receiving groove is provided on the inner wall of the third shell, and a measuring circuit board is provided in the receiving groove, and the measuring circuit board is electrically connected to the first probe and the second probe.

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