An ultrasonic flow meter

Abstract

The utility model discloses an ultrasonic flowmeter, including lower shell, be provided with transducer cavity and circuit board cavity in the lower shell, the lower shell is detachably connected with gland plate through stud, be provided with transducer skeleton in the transducer cavity, be connected with the inlay on the transducer skeleton, the upper end of inlay is connected with lower shell, be provided with ultrasonic generator on the transducer skeleton, be provided with the through -hole of pipeline through between inlay with gland plate, be provided with circuit board in the circuit board cavity, ultrasonic generator with circuit board connects, ultrasonic generator is configured as the flow of the measurement pipeline inner matter. The utility model provides an ultrasonic flowmeter can monitor the flow in gas, liquid pipeline, its simple structure, and the convenient installation and maintenance do not need to change the pipeline structure or directly contact fluid, reduce the interference and intervention to pipeline, improve the reliability and service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of flow measurement technology, and in particular to an ultrasonic flow meter. Background Technology

[0002] Ultrasonic flow meters, as a non-contact flow measurement instrument, are widely used in industrial, energy, municipal, and environmental protection fields to monitor the flow rate of liquids or gases in pipelines in real time.

[0003] Most existing flow meters require inserting the measuring element into the pipe or performing operations such as drilling or welding on the pipe, which is not only complex to install but also prone to problems such as fluid leakage, pressure loss, or pipe blockage. Although some existing ultrasonic flow meters adopt external clamp or insertion structures to achieve non-invasive measurement, some problems still exist: complex structural design, difficult installation and positioning, and difficulty in ensuring the transducer angle. Utility Model Content

[0004] In view of the above-mentioned shortcomings of current flow meters, this utility model provides an ultrasonic flow meter that can monitor the flow rate in gas and liquid pipelines. It has a simple structure, is easy to install and maintain, and does not require changes to the pipeline structure or direct contact with the fluid, thus reducing interference and intervention in the pipeline and improving the reliability and service life of the equipment.

[0005] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0006] An ultrasonic flow meter includes a lower housing, within which a transducer cavity and a circuit board cavity are disposed. A pressure plate is detachably connected to the lower housing via studs. A transducer frame is disposed within the transducer cavity, and an insert is connected to the transducer frame. The upper end of the insert is connected to the lower housing. An ultrasonic generator is disposed on the transducer frame. A through hole for a pipe to pass through is provided between the insert and the pressure plate. A circuit board is disposed within the circuit board cavity, and the ultrasonic generator is connected to the circuit board. The ultrasonic generator is configured to measure the flow rate of a substance in the pipe.

[0007] According to one aspect of the present invention, the pressure plate is provided with a pressure block, the insert is configured as a U-shaped structure, the pipe is placed in the U-shaped groove of the insert, and is fixed by being pressed by the pressure block.

[0008] According to one aspect of the present invention, a pressure plate is further provided inside the circuit board cavity, and the transducer frame and the circuit board are both fixed on the pressure plate.

[0009] According to one aspect of this utility model, the pressure plate has a U-shaped structure.

[0010] According to one aspect of the present invention, a pressure plate fixing part is provided inside the lower shell, and the pressure plate is fixedly installed on the pressure plate fixing part.

[0011] According to one aspect of the present invention, the circuit board is a double-layer circuit board, and the two layers of circuit boards are connected by a board-to-board connector.

[0012] According to one aspect of the present invention, the transducer frame is provided with an insert snap-fit ​​groove, and the lower end of the insert is provided with an insert protrusion that engages with the insert snap-fit ​​groove.

[0013] According to one aspect of the present invention, the lower shell is provided with an insert card interface, and the insert is provided with a shell card connector that mates with and connects to the insert card interface.

[0014] According to one aspect of the present invention, a transducer mounting groove is provided on the transducer frame, and the ultrasonic generator is installed in the transducer mounting groove.

[0015] According to one aspect of this utility model, a light guide post is connected to the lower shell, one end of the light guide post is connected to the light hole on the lower shell, and the other end is connected to the LED light on the circuit board.

[0016] The advantages of this invention are as follows: The pipe can be placed within the through-hole between the insert and the cover plate through the components such as the pressure plate, lower shell, transducer frame, and insert. The transducer frame semi-encloses the pipe, facilitating the monitoring of flow rate by the ultrasonic generator mounted on the transducer frame. The use of silicone material for the insert effectively prevents the flow meter from scratching the pipe. The pressure plate and lower shell are connected by studs, facilitating the disassembly and assembly of the flow meter and the fixing of the pipe. The light guide column allows operators to observe the flow meter's status at any time. The pressure plate simultaneously fixes the circuit board and transducer frame, saving installation space, reducing the number of parts, and lowering production costs. This invention provides an ultrasonic flow meter capable of monitoring flow rate in gas and liquid pipelines. Its simple structure and convenient installation and maintenance eliminate the need to modify the pipeline structure or directly contact the fluid, reducing interference and intervention with the pipeline, and improving the reliability and service life of the equipment. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1This is a three-dimensional structural diagram of an ultrasonic flow meter according to the present invention;

[0019] Figure 2 This is a cross-sectional schematic diagram of an ultrasonic flow meter according to Embodiment 2 of this utility model;

[0020] Figure 3 This is a cross-sectional schematic diagram of an ultrasonic flow meter according to Embodiment 1 of the present invention;

[0021] Figure 4 This is a three-dimensional structural diagram of the transducer frame in an ultrasonic flow meter according to the present invention.

[0022] Figure 5 This is a three-dimensional structural diagram of the insert in an ultrasonic flow meter according to the present invention.

[0023] The names corresponding to the serial numbers in the diagram are as follows:

[0024] 1. Cover plate; 11. Pressure tube block; 12. Screw hole; 2. Lower shell; 21. Transducer cavity; 22. Circuit board cavity; 23. Wiring terminal hole; 24. Light hole; 25. Pressure plate fixing part; 26. Inlay card interface; 3. Circuit board; 4. Transducer frame; 41. Transducer mounting slot; 42. Inlay card slot; 5. Pressure plate; 6. Light guide post; 7. Inlay; 71. Inlay protrusion; 72. Outer shell card part; 73. Inlay U-shaped groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0028] Example 1

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, an ultrasonic flow meter includes a lower housing 2, within which a transducer cavity 21 and a circuit board cavity 22 are disposed. A pressure plate 1 is detachably connected to the lower housing 2 via studs. The pressure plate 1 has screw holes 12 for the studs to pass through and be fixedly connected to the lower housing 2. A transducer frame 4 is disposed within the transducer cavity 21, and an insert 7 is connected to the transducer frame 4. The upper end of the insert 7 is connected to the lower housing 2. An ultrasonic generator is disposed on the transducer frame 4. A through hole for a pipe to pass through is provided between the insert 7 and the pressure plate 1. A circuit board 3 is disposed within the circuit board cavity 22, and the ultrasonic generator is electrically connected to the circuit board 3. The ultrasonic generator is configured to measure the flow rate of a substance in the pipe. The substance in the pipe can be gas, liquid, etc.

[0030] In this embodiment, a U-shaped groove is provided in the middle of the lower shell 2, and a U-shaped groove matching the U-shaped groove of the lower shell 2 is provided in the middle of the transducer frame 4. The insert 7 is installed in the U-shaped groove of the frame. The insert 7 is configured as a U-shaped structure with an insert U-shaped groove 73 in the middle of its upper end. The pipe is placed in the insert U-shaped groove. The lower shell 2 and the pressure plate 1 can be made of metal or plastic materials. Preferably, plastic materials are used, and the transducer frame 4 is made of plastic materials.

[0031] In this embodiment, a pressure block 11 is provided on the pressure plate 1, and the pipe is placed in the insert U-shaped groove 73 and is pressed and fixed by the pressure block 11.

[0032] In this embodiment, a pressure plate 5 is also provided inside the circuit board cavity 22, and both the transducer frame 4 and the circuit board 3 are fixed on the pressure plate 5. The circuit board 3 can be fixedly mounted on the pressure plate 5 with screws. In practical applications, the upper end of the pressure plate 5 is fixed to the transducer frame 4, and the lower end is fixed to the circuit board 3.

[0033] In this embodiment, a pressure plate fixing part 25 is provided inside the lower shell 2, and the pressure plate 5 is fixedly installed on the pressure plate fixing part 25. The pressure plate 5 presses the transducer frame 4 against the transducer cavity 21.

[0034] In this embodiment, the circuit board 3 is a double-layer circuit board, and the two layers of circuit boards are connected by a board-to-board connector. Of course, the two layers of circuit boards can also be connected by screws and sleeves or spacers, and are electrically connected to each other.

[0035] In this embodiment, the transducer frame 4 is provided with an insert mounting groove 42, and the lower end of the insert 7 is provided with an insert protrusion 71 that engages with the insert mounting groove 42. The insert mounting groove 42 and the insert protrusion 71 ensure that the insert 7 will not detach from the transducer frame 4.

[0036] In this embodiment, the insert 7 can be made of plastic, metal, silicone, etc., preferably silicone. The silicone insert 7 can protect the pipe from scratches.

[0037] In this embodiment, the lower shell 2 is provided with an insert card interface 26, and the insert 7 is provided with a shell snap-fit ​​part 72 that is connected to the insert card interface 26.

[0038] In this embodiment, the transducer frame 4 is provided with a transducer mounting slot 41, and the ultrasonic generator is installed in the transducer mounting slot 41. At least two transducer mounting slots 41 are provided, and they are symmetrically arranged on both sides of the U-shaped groove of the frame. Preferably, four transducer mounting slots 41 are provided, and the four transducer mounting slots 41 are symmetrically arranged in pairs on both sides of the U-shaped groove.

[0039] In this embodiment, a light guide post 6 is connected to the lower housing 2. One end of the light guide post 6 is connected to the light hole 24 on the lower housing 2, and the other end is connected to the LED light on the circuit board 3. The light guide post can be connected to the lower housing 2 by gluing, welding, snap-fitting, or interference fit. In this embodiment, the light guide post is bonded to the housing with adhesive. The light guide post is used to guide the LED light from the circuit board to the surface of the housing to display or indicate the status of the flow meter, facilitating observation by the operator.

[0040] In this embodiment, the lower shell 2 is provided with a terminal hole 23, the terminal hole 23 is connected to a terminal, and the terminal is electrically connected to the circuit board.

[0041] The advantages of this embodiment are as follows: The design of components such as the pressure plate, lower shell, transducer frame, and insert allows the pipe to be placed within the through-hole between the insert and the pressure plate. The transducer frame semi-encloses the pipe, facilitating the monitoring of flow rate within the pipe by the ultrasonic generator mounted on the transducer frame. The use of silicone material for the insert effectively prevents the flow meter from scratching the pipe. The pressure plate and lower shell are connected by studs, facilitating the disassembly and assembly of the flow meter and the fixing of the pipe. The inclusion of a light guide post allows operators to observe the flow meter's status at any time. The pressure plate simultaneously fixes the circuit board and transducer frame, saving installation space, reducing the number of parts, and lowering production costs.

[0042] Example 2

[0043] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown in the figure, an ultrasonic flowmeter includes a lower shell 2. A transducer cavity 21 and a circuit board cavity 22 are provided inside the lower shell 2. The lower shell 2 is detachably connected to a pressure cover plate 1 through studs. A transducer skeleton 4 is provided inside the transducer cavity 21. An insert body 7 is connected to the transducer skeleton 4. The upper end of the insert body 7 is connected to the lower shell 2. An ultrasonic generator is provided on the transducer skeleton 4. A through hole for the pipeline to pass through is provided between the insert body 7 and the pressure cover plate 1. A circuit board 3 is provided inside the circuit board cavity 22. The ultrasonic generator is electrically connected to the circuit board 3. The ultrasonic generator is configured to measure the flow rate of substances in the pipeline. The substances in the pipeline can be gases, liquids, etc.

[0044] In this embodiment, a U-shaped groove is provided in the middle of the lower shell 2. A skeleton U-shaped groove matching the U-shaped groove of the lower shell 2 is provided in the middle of the transducer skeleton 4. The insert body 7 is installed in the skeleton U-shaped groove. The insert body 7 is set to a U-shaped structure, and an insert body U-shaped groove 73 is provided in the middle of its upper end. The pipeline is placed in the insert body U-shaped groove 73. The lower shell 2 and the pressure cover plate 1 can be made of metal materials or plastic materials. Preferably, plastic materials are used. The transducer skeleton 4 is made of plastic materials.

[0045] In this embodiment, a pressure pipe block 11 is provided on the pressure cover plate 1. The pipeline is placed in the insert body U-shaped groove 73 and is pressed and fixed by the pressure pipe block 11.

[0046] In this embodiment, a pressure plate 5 is further provided inside the circuit board cavity 22. Both the transducer skeleton 4 and the circuit board 3 are fixed on the pressure plate 5. The circuit board 3 can be fixedly installed on the pressure plate 5 by screws. In actual application, the upper end of the pressure plate 5 fixes the transducer skeleton 4, and the lower end fixes the circuit board 3.

[0047] In this embodiment, the pressure plate 5 is set to a "ji" shape, which can save internal space, realize the universality of the product, can be used in various specifications of flowmeters, and expands the applicable range of the flowmeter.

[0048] In this embodiment, a pressure plate fixing part 25 is provided inside the lower shell 2. The pressure plate 5 is fixedly installed on the pressure plate fixing part 25. The pressure plate 5 abuts the transducer skeleton 4 inside the transducer cavity 21.

[0049] In this embodiment, the circuit board 3 is a double-layer circuit board, and the double-layer circuit boards are connected through a board-to-board connector. Of course, the connection method between the double-layer circuit boards is not limited. For example, the double-layer circuit boards can also be connected by screws and sleeves or spacer posts, and the double-layer circuit boards are electrically connected.

[0050] In this embodiment, the transducer frame 4 is provided with an insert mounting groove 42, and the lower end of the insert 7 is provided with an insert protrusion 71 that engages with the insert mounting groove 42. The insert mounting groove 42 and the insert protrusion 71 ensure that the insert 7 will not detach from the transducer frame 4.

[0051] In this embodiment, the insert 7 can be made of plastic, metal, silicone, etc., preferably silicone. The silicone insert 7 can protect the pipe from scratches.

[0052] In this embodiment, the lower shell 2 is provided with an insert card interface 26, and the insert 7 is provided with a shell snap-fit ​​part 72 that is connected to the insert card interface 26.

[0053] In this embodiment, the transducer frame 4 is provided with a transducer mounting slot 41, and the ultrasonic generator is installed in the transducer mounting slot 41. At least two transducer mounting slots 41 are provided, and they are symmetrically arranged on both sides of the U-shaped groove of the frame. Preferably, four transducer mounting slots 41 are provided, and the four transducer mounting slots 41 are symmetrically arranged in pairs on both sides of the U-shaped groove.

[0054] In this embodiment, a light guide post 6 is connected to the lower housing 2. One end of the light guide post 6 is connected to the light hole 24 on the lower housing 2, and the other end is connected to the LED light on the circuit board 3. The light guide post can be connected to the lower housing 2 by gluing, welding, snap-fitting, or interference fit. In this embodiment, the light guide post is bonded to the housing with adhesive. The light guide post is used to guide the LED light from the circuit board to the surface of the housing to display or indicate the status of the flow meter, facilitating observation by the operator.

[0055] In this embodiment, the lower shell 2 is provided with a terminal hole 23, the terminal hole 23 is connected to a terminal, and the terminal is electrically connected to the circuit board.

[0056] The working principle or operating procedure in this implementation is as follows: The operator installs the test pipe into the insert U-shaped groove 73, fixes the pressure plate 1 to the lower shell 2 with studs, and then starts the flow meter. At this time, the ultrasonic generator monitors the flow rate in the pipe. The ultrasonic generator can realize the mutual conversion between electrical energy and ultrasonic sound energy, thereby completing the non-contact measurement of flow rate.

[0057] The operator installs the test pipeline into the U-shaped groove 73 of the insert body, fixes the pressure cover plate 1 to the lower shell 2 by means of stud bolts, and then starts the flowmeter. At this time, the ultrasonic generator monitors the flow rate in the pipeline. The ultrasonic generator can convert electrical energy into ultrasonic sound energy and vice versa, thereby completing the non-contact measurement of the flow rate. At the same time, the operator connects display devices, calibrators and other devices through the terminal blocks, which ensures unobstructed signal transmission between the devices and also lays a solid foundation for further debugging and calibration work.

[0058] The beneficial effect of this embodiment is that by setting the pressure plate in a "ji" shape, it can save internal space, realize the versatility of the product, can be used in various specifications of flowmeters, and expands the applicable range of the flowmeter.

[0059] The advantages of the implementation of the present utility model are as follows: Through the setting of components such as the pressure cover plate, the lower shell, the transducer skeleton and the insert body, the pipeline can be placed in the through hole between the insert body and the pressure cover plate. The transducer skeleton can semi-surround the pipeline, which is convenient for the ultrasonic generator installed on the transducer skeleton to monitor the flow rate in the pipeline. By using a silicone material for the insert body, it can effectively avoid scratching the pipeline by the flowmeter. The pressure cover plate and the lower shell are connected by stud bolts, which is convenient for disassembling, assembling and fixing the pipeline of the flowmeter. Through the setting of the light guide column, the operator can observe the status of the flowmeter at any time. By fixing the circuit board and the transducer skeleton with the pressure plate at the same time, it saves the installation space, reduces the number of parts and lowers the production cost. The present utility model provides an ultrasonic flowmeter, which can monitor the flow rate in gas and liquid pipelines. Its structure is simple, the installation and maintenance are convenient, there is no need to change the pipeline structure or directly contact the fluid, which reduces the interference and intervention with the pipeline and improves the reliability and service life of the device.

[0060] As mentioned above, it is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An ultrasonic flow meter, comprising a lower housing (2), wherein a transducer cavity (21) and a circuit board cavity (22) are disposed within the lower housing (2), characterized in that, The lower shell (2) is detachably connected to a pressure plate (1) via studs. A transducer frame (4) is provided inside the transducer cavity (21). An insert (7) is connected to the transducer frame (4). The upper end of the insert (7) is connected to the lower shell (2). An ultrasonic generator is provided on the transducer frame (4). A through hole for a pipe to pass through is provided between the insert (7) and the pressure plate (1). A circuit board (3) is provided inside the circuit board cavity (22). The ultrasonic generator is connected to the circuit board (3). The ultrasonic generator is configured to measure the flow rate of the substance in the pipe.

2. The ultrasonic flow meter according to claim 1, characterized in that, The pressure plate (1) is provided with a pressure block (11), the insert (7) is configured as a U-shaped structure, the pipe is placed in the U-shaped groove (73) of the insert and is pressed and fixed by the pressure block (11).

3. The ultrasonic flow meter according to claim 1, characterized in that, A pressure plate (5) is also provided inside the circuit board cavity (22), and the transducer frame (4) and the circuit board (3) are both fixed on the pressure plate (5).

4. The ultrasonic flow meter according to claim 3, characterized in that, The pressure plate (5) has a Z-shaped structure.

5. The ultrasonic flow meter according to claim 3, characterized in that, The lower shell (2) is provided with a pressure plate fixing part (25), and the pressure plate (5) is fixedly installed on the pressure plate fixing part (25).

6. The ultrasonic flow meter according to claim 3, characterized in that, The circuit board (3) is a double-layer circuit board, and the two layers of circuit boards are connected by a board-to-board connector.

7. The ultrasonic flow meter according to claim 1, characterized in that, The transducer frame (4) is provided with an insert snap-fit ​​groove (42), and the lower end of the insert (7) is provided with an insert protrusion (71) that cooperates with the insert snap-fit ​​groove (42).

8. The ultrasonic flow meter according to claim 7, characterized in that, The lower shell (2) is provided with an insert card interface (26), and the insert (7) is provided with a shell card connector (72) that is connected to the insert card interface (26).

9. The ultrasonic flow meter according to claim 1, characterized in that, The transducer frame (4) is provided with a transducer mounting groove (41), and the ultrasonic generator is installed in the transducer mounting groove (41).

10. The ultrasonic flow meter according to claim 1, characterized in that, A light guide post (6) is connected to the lower shell (2). One end of the light guide post (6) is connected to the light hole (24) on the lower shell (2), and the other end is connected to the LED light on the circuit board (3).

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