Ultrasonic flowmeter

Abstract

The utility model discloses an ultrasonic flowmeter, which relates to the technical field of flowmeters, and comprises an ultrasonic flowmeter body and a pipe main body, the end part of the pipe main body is provided with a connecting part used for being connected with a pipeline to be measured, and the inner cavity of the pipe main body is a measuring cavity used for being communicated with the pipeline to be measured; the mounting plate is adaptively and fixedly mounted on the outer peripheral wall of the pipe main body; a guide structure is arranged on the mounting plate along the axis direction of the parallel pipe main body; the probe assembly is connected to the guide structure in a sliding mode and can move in the length direction of the pipe body; a probe of the probe assembly is attached to the outer wall of the pipe body and electrically connected with the ultrasonic flowmeter body. And the probe assembly can be fastened on the mounting plate through the fastener. The ultrasonic flowmeter can be stably installed on a pipeline to be measured, and accurate positioning and flexible adjustment of the probe can be achieved.

Description

Technical Field

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

[0002] The multi-channel ultrasonic flowmeter can detect the flow rate of the fluid through the received ultrasonic waves, and then convert it into flow rate. The ultrasonic flowmeter does not need to install measuring elements in the fluid, so it will not change the flow state of the fluid and will not generate additional resistance. It is widely used in online flow measurement of various liquids in industrial sites.

[0003] Chinese patent CN219328484U proposes an intelligent combined multi-channel ultrasonic flowmeter, including a fixed plate, an ultrasonic flowmeter is installed in the middle of the upper end of the fixed plate, and a display screen is arranged on the right side of the ultrasonic flowmeter; the first straight plate and the second straight plate are respectively arranged on the left and right sides of the ultrasonic flowmeter, and the upper and lower ends of the first straight plate and the second straight plate are respectively provided with thread grooves, through grooves are opened on both sides of the fixed plate, and an arc plate is installed at the lower end of the fixed plate, and multiple probes are installed at the lower end of the arc plate; the inner cavity of the thread groove is provided with a screw, and the lower left end of the first straight plate and the lower right end of the second straight plate are both provided with a fixing bar, and the upper end of the fixing bar is provided with a spring. When using, first remove the screw on the thread groove, then put the fixed plate in the detection position, then push the first straight plate and the second straight plate to move downward, and at the same time stretch the spring, and then screw the screw into the thread groove below the first straight plate and the second straight plate, and at the same time, the probe on the arc plate is against the outer wall of the measured pipeline. It can be seen that although the technical solution achieves quick installation, the elastic clamping and fixing method of elastically clamping the probe on the arc plate and the screw against the measured pipe by spring force lacks stability. It is easy to loosen and shift under the vibration of the fluid pipeline or the force of water hammer, and the accurate positioning of the probe cannot be ensured during use; and the position of the probe is fixed relative to its fixing plate, and the probe does not have a separate position adjustment function. When adjusting the position of the probe, the entire device needs to be moved, and the operation and adjustment are not convenient when accurately positioning it on the measured pipe.

[0004] Therefore, how to provide an ultrasonic flow meter that can be stably installed on the pipeline to be measured and can achieve accurate positioning and flexible adjustment of the probe is a problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of this, the utility model proposes an ultrasonic flowmeter, aiming to solve the technical problems that the above-mentioned traditional ultrasonic flowmeter is not stably installed on the pipeline to be measured and cannot realize accurate positioning and flexible adjustment of the probe.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides an ultrasonic flow meter, comprising an ultrasonic flow meter body, characterized in that it also comprises:

[0008] A pipe body, wherein the end of the pipe body has a connecting portion for connecting to the pipe to be measured, and the inner cavity of the pipe body is a measuring cavity for communicating with the pipe to be measured;

[0009] A mounting plate adapted to be fixedly mounted on the outer peripheral wall of the pipe body; a guide structure is arranged on the mounting plate in a direction parallel to the axial center line of the pipe body;

[0010] A probe assembly, wherein the probe assembly is slidably connected to the guide structure and can move along the length direction of the pipe body; the probe of the probe assembly is attached to the outer wall of the pipe body and is electrically connected to the ultrasonic flowmeter body;

[0011] A fastener, the probe assembly can be fastened to the mounting plate by the fastener.

[0012] The utility model provides an ultrasonic flow meter. When in use, the pipe body is connected to the pipe to be measured through the connecting part. The fluid in the pipe to be measured flows through the measuring cavity. The probe of the probe assembly is attached to the outer wall of the pipe body to measure the flow of the fluid in the measuring cavity. The probe assembly can move along the direction parallel to the axial center line of the pipe body under the guidance of the guide structure, and the positioning position of the probe can be flexibly adjusted, thereby improving the positioning accuracy of the probe, and thus improving the measurement accuracy; the mounting plate is fixed on the pipe body, and the probe assembly is fastened to the mounting plate by fasteners, thereby realizing the stable installation of the probe assembly.

[0013] As a further improvement of the above technical solution, the guide structure is a strip-shaped guide through hole opened on the outer wall of the mounting plate away from the pipe body in a direction parallel to the axial center line of the pipe body;

[0014] The probe assembly comprises a mounting block, and the probe is detachably mounted on the mounting block; the mounting block is slidably connected in the strip-shaped guide through hole, and can be fastened to the mounting plate by the fastener.

[0015] The beneficial effects of the above technical solution are: the probe that is detachably connected to the mounting block is more convenient to repair and replace; the mounting block is slidably connected to the strip guide through hole, and can be continuously moved to change its position for position adjustment. After the position is adjusted, it is fixed to the mounting plate by fasteners, making operation and adjustment more convenient.

[0016] As a further improvement of the above technical solution, the inner wall surface of the strip-shaped guide through hole and the corresponding outer wall surface of the tube body define a coupling agent filling groove.

[0017] The beneficial effect of the above technical solution is that the coupling agent filling groove is used to fill the ultrasonic probe coupling agent. The coupling agent filled in the coupling agent filling groove can always keep the probe in good contact with the outer wall of the tube body and isolate the air when sliding to adjust the position of the probe, so that the installation block slides more smoothly.

[0018] As a further improvement of the above technical solution, an inner side wall in the width direction of the strip guide through hole is provided with a strip slot along its length direction; a card block is fixed on the outer wall of the mounting block corresponding to the strip slot; and the card block is adapted to be slidably connected in the strip slot.

[0019] The beneficial effect of the above technical solution is that the sliding engagement between the clamping block and the strip-shaped clamping slot not only improves the stability of the installation block in the strip-shaped guide through hole and the sliding accuracy, but also enables the installation block to slide flexibly along the strip-shaped clamping slot through the clamping block.

[0020] As a further improvement of the above technical solution, the fastener is a fastening screw; a strip avoidance hole connected to the strip card slot is opened on the outer wall of the mounting plate away from the tube body in a direction parallel to the strip guide through hole; the fastening screw passes through the strip avoidance hole and is threadedly connected to the card block, and when the fastening screw is screwed, its screw nut can be pressed and fastened to the outer wall of the mounting plate to fasten the card block to the mounting plate.

[0021] The beneficial effects of the above technical solution are: the fastener is threadedly connected to the block and can slide with the mounting block. The strip avoidance hole provides avoidance space for the movement of the fastener. In the process of screwing the fastening screw to gradually screw it into the block, the screw nut can be pressed and fastened on the outer wall of the mounting plate, and at the same time, the block is pressed against the inner wall of the strip slot, thereby improving the stability of the fixation of the probe assembly.

[0022] As a further improvement of the above technical solution, the strip-shaped guide through hole, the strip-shaped slot and one side wall of the strip-shaped avoidance hole in the length direction are all openings to jointly form a disassembly slide-out port for disassembling the probe assembly.

[0023] The beneficial effect of the above technical solution is that the sliding mounting block can slide the entire probe assembly out from the disassembly slide-out port and disassemble it, which is convenient for maintenance and replacement.

[0024] As a further improvement of the above technical solution, there are multiple probe assemblies, and the multiple probe assemblies are arranged on the guide structure at intervals along the length direction of the guide structure.

[0025] The beneficial effects of the above technical solution are: multiple probe assemblies are arranged at intervals along the length direction of the guide structure, so as to realize the Doppler detection mode of a single probe and the time difference detection mode between multiple probes; when multiple probes are arranged in the time difference detection mode, different arrangement modes of V method installation and W method installation can be realized; and a dual-mode synchronous detection arrangement of simultaneous detection of Doppler detection mode and time difference detection mode can also be realized.

[0026] As a further improvement of the above technical solution, it also includes a mounting sleeve and a rotation drive mechanism, wherein the mounting sleeve is fixed on the pipe body and fixed to the mounting plate;

[0027] The ultrasonic flow meter body comprises a shell, and a side surface of the shell is opened to form a data display surface;

[0028] The fixed end of the rotation drive mechanism is fixed on the mounting sleeve, and the rotating shaft of the rotation drive mechanism is fixedly connected to the housing and can be driven to rotate to change the facing direction of the data display surface.

[0029] The beneficial effect of the above technical solution is that the rotation of the shell can be driven and controlled by the rotary drive mechanism, thereby changing the orientation of the data display screen of the ultrasonic flowmeter body, so that the data display screen always faces the user for easy observation of the data, thereby improving the applicability of the ultrasonic flowmeter of the utility model to application scenarios.

[0030] As a further improvement of the above technical solution, it also includes a cleaning brush mechanism, which includes a telescopic drive mechanism and a cleaning brush;

[0031] A transparent protective plate is provided on a side of the shell corresponding to the data display surface, the fixed end of the telescopic drive mechanism is fixed on the shell, the cleaning brush abuts against the transparent protective plate, and the telescopic end of the telescopic drive mechanism is transmission-connected to the cleaning brush to drive it to clean the outer wall surface of the transparent protective plate.

[0032] The beneficial effects of the above technical solution are: the transparent protective plate can not only protect the data display surface of the ultrasonic flowmeter body, but also serve as an observation window to facilitate observation of the internal display data; the outer surface of the transparent protective plate is easily polluted by the environment and affects observation, and the cleaning brush can be driven by the telescopic drive mechanism to reciprocate and clean the outer wall surface of the transparent protective plate to ensure that the user can clearly observe and read the data.

[0033] As a further improvement of the above technical solution, the mounting sleeve is a clamp sleeved on the pipe body and fixed to the pipe body by fastening bolts.

[0034] The beneficial effect of the above technical solution is that the installation sleeve is fastened to the pipe body by tightening bolts, which further improves the stability of the installation and ensures the working stability of the ultrasonic flowmeter body and the cleaning mechanism installed on the installation sleeve.

[0035] It can be seen from the above technical solutions that, compared with the prior art, the utility model discloses an ultrasonic flow meter with the following advantages and beneficial effects:

[0036] 1. The utility model connects the probe assembly to the mounting plate by sliding. After the mounting plate is fixed to the pipe body, the probe can be moved to a suitable position by simply pushing the probe assembly to move. The probe assembly can then be accurately fixed at a designated position by fastening with fasteners, which greatly facilitates the staff to install and adjust the probe.

[0037] 2. The utility model provides a rotary drive mechanism to rotate the ultrasonic flowmeter body, which is convenient for workers to adjust the ultrasonic flowmeter body to any direction and to observe the display of the corresponding data display surface on the ultrasonic flowmeter body, thereby improving the convenience of use and applicability to application scenarios.

[0038] 3. The utility model protects the display of the ultrasonic flowmeter body through a transparent protective plate, thereby improving the protective effect; the transparent protective plate is cleaned by a cleaning mechanism, thereby preventing a large amount of dust from adhering to the outer surface of the transparent protective plate and affecting the viewing data. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0040] Figure 1 A schematic diagram of the overall structure of an ultrasonic flow meter of the utility model;

[0041] Figure 2 A schematic diagram of a mounting plate and a probe assembly of an ultrasonic flow meter according to the utility model;

[0042] Figure 3 A schematic diagram of the assembly state of a mounting sleeve, a rotary drive mechanism and an ultrasonic flowmeter body of the utility model;

[0043] Figure 4 A schematic diagram of the arrangement of a mounting plate relative to a mounting sleeve of an ultrasonic flow meter according to the utility model;

[0044] Figure 5 A schematic structural diagram of a cleaning mechanism of an ultrasonic flowmeter according to the utility model;

[0045] Figure 6 A schematic diagram of the pipe main body structure of an ultrasonic flowmeter of the utility model;

[0046] In the figure: 1. pipe body; 11. connecting part; 111. bolt hole; 12. measuring cavity; 13. threaded fixing hole; 14. fixing screw; 2. mounting plate; 21. strip guide through hole; 211. coupling agent filling groove; 212. strip card slot; 22. strip avoidance hole; 23. disassembly slide port; 24. penetration hole; 3. probe assembly; 31. probe; 32. mounting block; 321. card block; 322. probe positioning hole; 4. fastener; 41. fastening screw; 5. mounting sleeve; 51. C-shaped opening sleeve; 511. motor mounting groove; 52. fastening plate; 521. locking bolt; 6. rotating drive mechanism; 7. ultrasonic flowmeter body; 71. housing; 711. transparent protective plate; 8. cleaning brush mechanism; 81. telescopic drive mechanism; 811. cleaning brush guide frame; 812. electric push rod; 82. cleaning brush. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0048] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] Ultrasonic flow meters are usually divided into single-channel, dual-channel and multi-channel; single-channel flow meters have only one channel, namely one transmitter and one receiver. It measures the flow velocity and flow rate of the fluid by alternately transmitting and receiving ultrasonic signals in the same channel. Single-channel flow meters are suitable for most conventional flow measurement applications, such as simple flow measurement of liquids and gases. Dual-channel flow meters have two channels, namely two transmitters and two receivers. One of the channels is called the main channel and is used for conventional flow velocity and flow measurement. The other channel is called the reference channel, which is used to provide compensation and correction to eliminate errors caused by changes in the medium, temperature or changes in the internal structure of the pipeline. Dual-channel flow meters usually have higher accuracy and stability and are suitable for some applications that require higher measurement accuracy.

[0052] Multi-channel flow meters (three channels and more) can have three or more channels, each with an independent transmitter and receiver. Multi-channel flow meters are usually used for complex fluid flow analysis and special applications, such as multiphase flow measurement, liquid component analysis, etc., and can provide richer fluid properties and flow information.

[0053] like Figures 1 to 6 As shown, an ultrasonic flow meter includes an ultrasonic flow meter body 7, characterized in that it also includes:

[0054] A pipe body 1, wherein both ends of the pipe body 1 have connection parts 11 for connecting with the pipe to be measured, and the inner cavity of the pipe body 1 is a measuring cavity 12 for communicating with the pipe to be measured;

[0055] A mounting plate 2, the mounting plate 2 is adapted to be fixedly mounted on the outer peripheral wall of the pipe body 1; a guide structure is arranged on the mounting plate 2 along a direction parallel to the axis of the pipe body 1;

[0056] The probe assembly 3 is slidably connected to the guide structure and can move along the length direction of the pipe body 1; the probe 31 of the probe assembly 3 is attached to the outer wall of the pipe body 1 and is electrically connected to the ultrasonic flowmeter body 7;

[0057] Fastener 4 , the probe assembly 3 can be fastened on the mounting plate 2 by the fastener 4 .

[0058] The utility model is an ultrasonic flow meter. When in use, the pipe body 1 is connected to the pipe to be measured through the connecting part 11, the fluid in the pipe to be measured flows through the measuring cavity 12, and the probe 31 of the probe assembly 3 is attached to the outer wall of the pipe body 1 to measure the flow of the fluid in the measuring cavity 12. The probe assembly 3 can move along the direction parallel to the axial center line of the pipe body 1 under the guidance of the guide structure, which can not only flexibly adjust the positioning position of the probe 31, but also improve the positioning accuracy of the probe 31; the mounting plate 2 is fixed on the pipe body 1, and the probe assembly 3 is fastened to the mounting plate 2 by the fastener 4, thereby realizing the stable installation of the probe assembly 3.

[0059] Specifically, the pipe body 1 is a circular pipe; the connecting portion 11 is an annular flange, which is welded to the end of the pipe body 1 and is used to adapt to the annular flange of the pipeline to be measured and directly connect. After the pipe body 1 is connected to the pipeline to be measured, the fluid medium in the pipeline to be measured directly enters the measuring cavity 12.

[0060] Specifically, the connection part 11 is circumferentially opened and evenly distributed with a plurality of bolt holes 111; in actual measurement, considering that bubbles may gather in the upper part of the pipeline and sediment may gather in the lower part, the probe 31 should be arranged corresponding to the horizontal side of the pipeline. At this time, the pipe body 1 and the connection part 11 can be rotated axially to make the probe 31 correspond to the horizontal side of the pipeline; if the liquid in the pipe is full and there are no bubbles, the probe 31 can be arranged vertically or obliquely.

[0061] Specifically, the inner wall surface of the mounting plate 2 is an arc-shaped surface that fits the outer circumferential wall of the pipe body 1; a threaded fixing hole 13 is provided on the outer circumferential wall of the pipe body 1; a through hole 24 is provided on the mounting plate 2 corresponding to the threaded fixing hole 13, and the fixing screw 14 passes through the through hole 24 and is screwed to the threaded fixing hole 13, and the mounting plate 2 can be detachably mounted on the pipe body 1 by the fixing screw 14.

[0062] In some embodiments, the guide structure is a strip-shaped guide through hole 21 opened on the outer wall of the mounting plate 2 away from the tube body 1 and parallel to the axial center line of the tube body 1;

[0063] The probe assembly 3 includes a mounting block 32 , and the probe 31 is detachably mounted on the mounting block 32 ; the mounting block 32 is slidably connected in the strip-shaped guide through hole 21 , and can be fastened to the mounting plate 2 by a fastener 4 .

[0064] The probe 31 detachably connected to the mounting block 32 is more convenient for maintenance and replacement; the mounting block 32 is slidably connected to the strip guide through hole 21, and can be continuously moved to change its position for position adjustment. After the position is adjusted, it is fixed to the mounting plate 2 by the fastener 4, which makes operation and adjustment more convenient.

[0065] Specifically, the strip-shaped guide through hole 21 is preferably a rectangular through hole.

[0066] Specifically, the mounting block 32 is provided with probe positioning holes 322 arranged radially along the pipe body 1 , and the probe 31 is detachably fixed in the positioning hole 322 so that the ultrasonic emission or receiving direction of the probe corresponds to the axis of the pipe body 1 , thereby achieving precise positioning and measurement.

[0067] In some embodiments, the inner wall surface of the strip-shaped guide through hole 21 and the outer wall surface of the corresponding tube body 1 define a coupling agent filling groove 211 .

[0068] The coupling agent filling groove 211 is used to fill the existing ultrasonic probe coupling agent, for example, butter can be used, and molybdenum disulfide can be used when the pipe wall temperature is above 110°C; the coupling agent filled in the coupling agent filling groove 211 can always keep the probe 31 in good contact with the outer wall of the pipe body 1 when the position of the probe 31 is slidably adjusted, isolate the air and prevent rust, and make the mounting block 32 slide more smoothly.

[0069] In some embodiments, the inner side walls opposite to each other in the width direction of the strip guide hole 21 are provided with strip slots 212 along their length direction; the outer walls of the mounting blocks 32 corresponding to the strip slots 212 are integrally connected with blocks 321; and the two blocks 321 are adapted to be slidably connected in the corresponding strip slots 212.

[0070] By means of the sliding engagement between the clamping block 321 and the strip-shaped clamping groove 212, the stability of the installation of the mounting block 32 in the strip-shaped guide through hole 21 and the sliding accuracy are improved, and the mounting block 32 can slide flexibly along the strip-shaped clamping groove 212 through the clamping block 321; the clamping block 321 is constrained along the pipe body 1 through the strip-shaped clamping groove 212, so that the probe 31 always fits and fits on the outer peripheral wall of the pipe body 1.

[0071] In some embodiments, the fastener 4 is a fastening screw 41; a strip avoidance hole 22 connecting to the strip card slot 212 is opened on the outer wall of the mounting plate 2 away from the tube body 1 in a direction parallel to the strip guide through hole 21; the fastening screw 41 movably passes through the strip avoidance hole 22 and is threadedly connected to the card block 321. When the fastening screw 41 is screwed and gradually enters the card block 321, its screw cap 411 can be pressed and fastened to the outer wall surface of the mounting plate 2 to fasten the card block 321 to the mounting plate 2.

[0072] The fastener 4 is threadedly connected to the block 321 and can slide with the mounting block 32. The strip avoidance hole 22 provides an avoidance space for the movement of the fastening screw 41. In the process of screwing the fastening screw 41 to gradually screw it into the block 321, the screw cap 411 can be pressed and fastened on the outer wall of the mounting plate 2, and at the same time, the block 321 is pressed against the inner wall of the strip groove 212, thereby improving the stability of the fixation of the probe assembly 3.

[0073] In some embodiments, the side walls of the strip-shaped guide through hole 21, the strip-shaped slot 212, and the strip-shaped avoidance hole 22 in the length direction are all open to form a disassembly slide-out port 23 for disassembling the probe assembly 3. The disassembly slide-out port 23 and the connecting portion 11 are arranged axially parallel to the tube body 1 to reserve a disassembly space.

[0074] The sliding mounting block 32 can slide the probe assembly 3 out of the disassembly slide-out port 23 and disassemble it, so as to facilitate maintenance and replacement.

[0075] In some embodiments, there are multiple probe assemblies 3, and the multiple probe assemblies 3 are arranged on the guide structure at intervals along the length direction of the guide structure.

[0076] Multiple probe assemblies 3 are arranged at intervals along the length direction of the guide structure, which can realize the Doppler detection mode of a single probe and the time difference detection mode between multiple probes; when multiple probes are arranged in the time difference detection mode, different arrangement modes of V method installation and W method installation of ultrasonic flowmeter can be realized; it is also possible to realize a dual-mode synchronous detection arrangement in which the Doppler detection mode and the time difference detection mode are detected simultaneously. For example, some probe assemblies 3 use the Doppler detection mode for measurement, and some probe assemblies 3 are arranged in the time difference detection mode for measurement.

[0077] In some embodiments, it also includes a mounting sleeve 5 and a rotation drive mechanism 6, wherein the mounting sleeve 5 is fixed on the pipe body 1 and fixed to the mounting plate 2;

[0078] The ultrasonic flow meter body 7 includes a housing 71, one side of which is open to form a data display surface; a display for displaying measurement data is installed in the housing 71 corresponding to the data display surface;

[0079] The rotating drive mechanism 6 is a motor, and a motor mounting groove 511 is provided on the outer peripheral wall of the mounting sleeve 5; the motor housing is used as a fixed end and is embedded in the motor mounting groove 511 of the mounting sleeve 5; the outer end of the output shaft of the motor is fixedly connected to the bottom of the housing 71, and can be driven to rotate to change the orientation of the data display surface.

[0080] The rotation drive mechanism 6 can drive and control the housing 71 to rotate, thereby changing the orientation of the data display screen of the ultrasonic flow meter body 7, so that the data display screen always faces the user to facilitate observation of the display data, thereby improving the applicability of the ultrasonic flow meter of the utility model to application scenarios.

[0081] In some embodiments, there are two groups of mounting plates 2 , which are symmetrically arranged and fixed at both ends of the mounting sleeve 5 .

[0082] In some embodiments, each group of mounting plates 2 includes two mounting plates 2 , and the two mounting plates 2 are symmetrically arranged on both sides of the tube body 1 relative to the axis of the tube body 1 .

[0083] By arranging mounting plates 2 on both sides of the pipe body 1, a probe assembly 3 can be installed on each mounting plate 2, and the probe assembly 3 can be arranged on two mounting plates 2 symmetrically relative to the axial center line of the pipe body 1 on both sides of the pipe body 1 to realize N-method installation and Z-method installation of the ultrasonic flowmeter.

[0084] In some embodiments, a cleaning brush mechanism 8 is further included, and the cleaning brush mechanism 8 includes a telescopic driving mechanism 81 and a cleaning brush 82;

[0085] A transparent protective plate 711 is provided on one side of the shell 71 corresponding to the data display surface, the fixed end of the telescopic driving mechanism 81 is fixed on the shell 71, the cleaning brush 82 abuts against the transparent protective plate 711, and the telescopic end of the telescopic driving mechanism 81 is transmission-connected to the cleaning brush 82 to drive it to clean the outer wall surface of the transparent protective plate 711.

[0086] The transparent protective plate 711 can not only protect the data display surface of the ultrasonic flowmeter body 7, but also serve as an observation window to facilitate observation of the internal display data; the outer surface of the transparent protective plate 711 is easily polluted by the environment and affect observation, and the telescopic rod of the telescopic drive mechanism 81 can drive the cleaning brush 82 to reciprocate and clean the outer wall surface of the transparent protective plate 711 to ensure that the user can clearly observe and read the data.

[0087] Specifically, the telescopic driving mechanism 81 includes a cleaning brush guide frame 811 and an electric push rod 812. The cleaning brush guide frame 811 is arranged on the side corresponding to the transparent protective plate 711, and the cleaning brush 82 is slidably connected to the cleaning brush guide frame 811; the fixed end of the electric push rod 812 is fixedly installed on the cleaning brush guide frame 811, and its telescopic rod is fixedly connected to the cleaning brush 82.

[0088] In some embodiments, the mounting sleeve 5 is a clamp that is sleeved on the pipe body 1 and is fixed to the pipe body 1 by tightening bolts.

[0089] The mounting sleeve 5 is fastened to the pipe body 1 by tightening bolts, which further improves the stability of the installation and ensures the working stability of the ultrasonic flowmeter body 7 and the cleaning mechanism 8 installed on the mounting sleeve 5.

[0090] Specifically, the mounting sleeve 5 includes a C-shaped opening sleeve 51 and fastening plates 52 fixed to the two open ends of the C-shaped opening sleeve. The two fastening plates 52 are arranged relatively spaced apart and can be fastened by locking bolts 521 so that the C-shaped opening sleeve is adapted to be tightly clamped on the outer peripheral wall of the pipe body 1.

[0091] It should be noted that: multiple probe assemblies 3 can be flexibly assembled on the ultrasonic flowmeter of the utility model, the position of the probe assembly 3 on the pipe body 1 can be accurately located and the distribution can be flexibly adjusted, which is applicable to single-channel, dual-channel and multi-channel measurements; the probe of the ultrasonic flowmeter is an existing product and can be selected according to measurement needs. The specific arrangement of the probe during single-channel, dual-channel and multi-channel measurements also belongs to the existing technology and will not be repeated here.

[0092] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0093] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An ultrasonic flow meter, comprising an ultrasonic flow meter body (7), characterized in that: Also includes: A pipe body (1), wherein the end of the pipe body (1) has a connecting portion (11) for connecting to a pipe to be measured, and an inner cavity of the pipe body (1) is a measuring cavity (12) for communicating with the pipe to be measured; A mounting plate (2), the mounting plate (2) being adapted to be fixedly mounted on the outer peripheral wall of the pipe body (1); a guide structure is provided on the mounting plate (2) in a direction parallel to the axial centerline of the pipe body (1); A probe assembly (3), wherein the probe assembly (3) is slidably connected to the guide structure and can move along the length direction of the pipe body (1); a probe (31) of the probe assembly (3) is attached to the outer wall of the pipe body (1) and is electrically connected to the ultrasonic flow meter body (7); A fastener (4), wherein the probe assembly (3) can be fastened to the mounting plate (2) via the fastener (4).

2. An ultrasonic flowmeter according to claim 1, characterized in that: The guide structure is a strip-shaped guide through hole (21) provided on the outer wall of the mounting plate (2) away from the pipe body (1) and parallel to the axial center line of the pipe body (1); The probe assembly (3) comprises a mounting block (32), and the probe (31) is detachably mounted on the mounting block (32); the mounting block (32) is slidably connected in the strip-shaped guide through hole (21), and can be fastened to the mounting plate (2) via the fastener (4).

3. An ultrasonic flow meter according to claim 2, characterized in that: The inner wall surface of the strip-shaped guide through hole (21) and the corresponding outer wall surface of the tube body (1) define a coupling agent filling groove (211).

4. An ultrasonic flow meter according to claim 2, characterized in that: An inner side wall in the width direction of the strip-shaped guide through hole (21) is provided with a strip-shaped slot (212) along its length direction; a clamping block (321) is fixed to the outer wall of the mounting block (32) corresponding to the strip-shaped slot (212); and the clamping block (321) is adapted to be slidably connected in the strip-shaped slot (212).

5. An ultrasonic flow meter according to claim 4, characterized in that: The fastener (4) is a fastening screw (41); a strip-shaped avoidance hole (22) communicating with the strip-shaped clamping groove (212) is provided on the outer wall of the mounting plate (2) away from the pipe body (1) in a direction parallel to the strip-shaped guide through hole (21); the fastening screw (41) passes through the strip-shaped avoidance hole (22) and is threadedly connected to the clamping block (321); when the fastening screw (41) is screwed, its screw cap (411) can be pressed and fastened to the outer wall of the mounting plate (2) so as to fasten the clamping block (321) to the mounting plate (2).

6. An ultrasonic flow meter according to claim 5, characterized in that: The strip-shaped guide through hole (21), the strip-shaped slot (212) and one side wall of the strip-shaped avoidance hole (22) in the length direction are all open to jointly form a disassembly slide-out port (23) for disassembling the probe assembly (3).

7. The ultrasonic flow meter according to claim 1, characterized in that: There are a plurality of probe assemblies (3), and the plurality of probe assemblies (3) are arranged on the guide structure at intervals along the length direction of the guide structure.

8. An ultrasonic flow meter according to any one of claims 1 to 7, characterized in that: It also comprises a mounting sleeve (5) and a rotation drive mechanism (6), wherein the mounting sleeve (5) is sleeved on the pipe body (1) and fixed to the mounting plate (2); The ultrasonic flow meter body (7) comprises a shell (71), and a side surface of the shell (71) is open to form a data display surface; The fixed end of the rotary drive mechanism (6) is fixed on the mounting sleeve (5), and the rotating shaft of the rotary drive mechanism (6) is fixedly connected to the housing (71) and can be driven to rotate to change the facing direction of the data display surface.

9. An ultrasonic flow meter according to claim 8, characterized in that: It also includes a cleaning brush mechanism (8), wherein the cleaning brush mechanism (8) includes a telescopic driving mechanism (81) and a cleaning brush (82); A transparent protective plate (711) is provided on a side of the housing (71) corresponding to the data display surface, the fixed end of the telescopic drive mechanism (81) is fixed on the housing (71), the cleaning brush (82) abuts against the transparent protective plate (711), and the telescopic end of the telescopic drive mechanism (81) is transmission-connected to the cleaning brush (82) so as to drive the cleaning brush to clean the outer wall surface of the transparent protective plate (711).

10. The ultrasonic flow meter according to claim 8, characterized in that: The mounting sleeve (5) is a clamp sleeved on the pipe body (1) and is fixed on the pipe body (1) by means of fastening bolts.

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