Vibration damping structure of ultrasonic water meter

Abstract

The utility model relates to the technical field of ultrasonic water meters, and particularly discloses an ultrasonic water meter damping structure which comprises an ultrasonic water meter damping body connected to a pipeline. The ultrasonic water meter damping main body comprises a connecting pipeline, a main body arranged on the connecting pipeline, a plurality of sound wave transmitters and sound wave receivers arranged on the main body, and a display main body arranged on the surface of the main body and used for processing data of the sound wave transmitters and the sound wave receivers. The device solves the problems that when a traditional ultrasonic water meter designed based on a time difference method is subjected to long-time flow velocity impact vibration, a sound wave transmitter and a sound wave receiver can generate displacement deviation, then the theta angle can generate deviation, and finally the accuracy of the ultrasonic water meter has errors.

Description

Technical Field

[0001] This application relates to the field of ultrasonic water meter technology, and specifically discloses an ultrasonic water meter vibration damping structure. Background Technology

[0002] An ultrasonic water meter is an advanced metering device. Its core components include an ultrasonic transducer (transmitter and receiver). When ultrasonic waves propagate along the direction of water flow, their propagation speed increases; conversely, they slow down when traveling against the flow. By comparing the propagation times of the ultrasonic waves in the forward and reverse directions, the water flow velocity can be calculated. Based on this velocity and the cross-sectional area of ​​the pipe, the flow rate can be determined.

[0003] It employs two sound wave transmitters and two sound wave receivers. Two sets of sound waves from the same source are transmitted separately between SA and and between SA and . They are installed along the pipe at an angle θ to the pipe. Because the downstream sound wave is accelerated by the fluid, while the upstream sound wave is delayed, the time difference between them is positively correlated with the flow velocity. See the attached instruction manual for details. Figure 1 ;

[0004] Two sound wave transmitters (A1 and A2) and two sound wave receivers (B1 and B2) are used. The liquid flow velocity is directional. For ease of understanding, Figure 1 The default fluid flow rate is from left to right. For A1, from A1 to B1, the direction of sound wave propagation is the same as the direction of flow rate, and the sound wave is accelerated by the fluid. Similarly, for A2, from A2 to B2, the direction of sound wave propagation is opposite to the direction of flow rate, and the sound wave is decelerated by the fluid, creating a time difference. The time difference between them is proportional to the flow rate. The flow rate is then calculated using the time difference and the corresponding processor. The processor is essentially an algorithm, which mainly processes the time difference data and then calculates the actual flow rate using the time difference data.

[0005] The core principle has been demonstrated. The ultrasonic water meter's casing is external to the pipe. Typically, it is equipped with a display and a processor. The display shows the flow rate. When one end of the pipe is opened, a flow rate is generated, the ultrasonic water meter works, and the flow rate is displayed.

[0006] The above is a detailed introduction to ultrasonic water meters;

[0007] Patent publication number CN209961278U discloses an ultrasonic water meter vibration damping structure, which comprises an ultrasonic water meter and a water supply pipeline, an ultrasonic water meter connecting flange and a water supply pipeline connecting flange are fastened and connected through the cooperation of bolts and nuts, wherein a first stage vibration isolation layer is arranged between the ultrasonic water meter connecting flange and the water supply pipeline connecting flange and in the mounting channel of the bolt, a mounting seat and a transducer are arranged in the ultrasonic water meter, the transducer is mounted in the mounting seat, and a second stage vibration isolation layer is arranged between the transducer and the mounting seat.

[0008] The above patent improves the measurement accuracy of the ultrasonic water meter by improving the structure and eliminating the interference and influence of external vibration and impact on the normal work of the ultrasonic water meter.

[0009] As can be seen from the above, the accuracy of the ultrasonic water meter depends on the sound wave transmitter and the sound wave receiver, which are installed at a θ angle along the pipeline. Since one group is downstream and the other group is upstream, when the flow rate is too large, the impact vibration of the water flow will continuously impact the sound wave transmitter and the sound wave receiver and the inner wall of the installation of the sound wave transmitter and the sound wave receiver. Over a long period of time, the θ angle will deviate, which will cause errors in the accuracy of the ultrasonic water meter. In view of this, the utility model provides an ultrasonic water meter vibration damping structure to solve the above problems. Utility model content

[0010] The utility model aims at solving the problem that the sound wave transmitter and the sound wave receiver will produce displacement deviation under the impact vibration of flow rate for a long time, which will cause the θ angle to deviate and finally cause errors in the accuracy of the ultrasonic water meter.

[0011] In order to achieve the above purpose, the utility model provides the following basic scheme:

[0012] An ultrasonic water meter vibration damping structure, comprising an ultrasonic water meter vibration damping main body connected to a pipeline, the ultrasonic water meter vibration damping main body comprising a connecting pipeline, a main body arranged on the connecting pipeline, a plurality of sound wave transmitters and sound wave receivers arranged on the main body, and a display main body arranged on the surface of the main body for processing data of the sound wave transmitters and the sound wave receivers.

[0013] Further, the connecting pipeline is provided with a flange plate at both ends, the ultrasonic water meter vibration damping main body is connected to the pipeline to be measured through the flange plate, and the connecting pipeline and the main body are integrally formed.

[0014] Further, the display body comprises a display and a data processor embedded in the surface of the body, the display is used to display the flow of water flow, and the data processor is used to process the data of the sound wave transmitter and the sound wave receiver, and convert the data of the sound wave transmitter and the sound wave receiver into flow data displayed through the display.

[0015] Further, the body is provided with a mounting surface around the body, and the sound wave transmitter and the sound wave receiver are detachably connected to the mounting surface, and the number of the sound wave transmitter and the sound wave receiver is at least two groups.

[0016] Further, a through slot is opened on the mounting surface, the through slot is communicated with the connecting pipeline, the mounting surface is provided with a clamping groove around the through slot, and the clamping groove is connected with a fixing member for realizing the mounting of the sound wave transmitter and the sound wave receiver.

[0017] Further, the fixing member comprises a fixing column which is the same length as the through slot and is inserted into the through slot, an elastic contact component which is provided around the fixing column and corresponds to the clamping groove one by one, a threaded hole which penetrates the fixing column, and a connecting column which is threadedly connected with the threaded hole, and the end of the connecting column is connected with any one of the sound wave transmitter or the sound wave receiver.

[0018] Further, any one of the sound wave transmitter or the sound wave receiver is connected with the end of the connecting column and located in the connecting pipeline, and the fixing column is not exposed in the connecting pipeline.

[0019] Further, the other end of the fixing column is pasted with a fixing plate, and the fixing plate is detachably connected with the mounting surface.

[0020] Further, a waterproof gasket is arranged at the connection between the fixing plate and the mounting surface.

[0021] Further, a connecting hole is arranged on the fixing plate, a mounting hole corresponding to the connecting hole is arranged on the mounting surface, and a connecting screw is further arranged, the connecting screw is threadedly connected with the connecting hole and the mounting hole.

[0022] The principle and effect of the scheme are that:

[0023] 1. Compared with the prior art, the device only exposes the sound wave transmitter and the sound wave receiver in the pipeline to receive the impact of water flow, compared with the traditional sound wave transmitter and sound wave receiver which expose all components in the pipeline, the impact of water flow is reduced to the greatest extent, thereby solving the problem that the sound wave transmitter and the sound wave receiver will produce displacement deviation under the long-time flow impact vibration of the traditional ultrasonic water meter based on the time difference method, and the θ angle will produce deviation, and finally leading to the problem of error of the accuracy of the ultrasonic water meter.

[0024] 2、Compared with the prior art, the utility model innovates on the connection of the sound wave transmitter and the sound wave receiver, the connection of the traditional sound wave transmitter and the sound wave receiver adopts hard connection with the pipeline, when the inner wall of the pipeline vibrates, because the hard link is adopted, the vibration can be transmitted to the sound wave transmitter and the sound wave receiver, and then the displacement deviation of the sound wave transmitter and the sound wave receiver is caused, therefore, the elastic contact part is arranged on the connection, and the inner wall vibration of the pipeline caused by the water flow is offset by the elastic contact part, and then the displacement deviation of the sound wave transmitter and the sound wave receiver is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 A traditional principle schematic view of the ultrasonic water meter vibration damping structure is shown.

[0027] Figure 2 A front view of the explosion view of the ultrasonic water meter vibration damping structure is shown.

[0028] Figure 3 A partial sectional view of the ultrasonic water meter vibration damping structure is shown.

[0029] Figure 4 An explosion schematic view of the ultrasonic water meter vibration damping structure is shown. DETAILED DESCRIPTION

[0030] In order to further illustrate the technical means and effects adopted by the utility model for realizing the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail below in combination with the drawings and preferred embodiments.

[0031] The reference signs in the drawings of the specification include: main body 1, connecting pipeline 2, fixed column 3, elastic contact part 4, threaded rod 5, sound wave transmitter 6, fixed plate 7, display 8, through slot 9, mounting hole 10, threaded hole 11, connecting hole 12, waterproof gasket 13.

[0032] The embodiments are shown as follows: Figures 1-4

[0033] ​An ultrasonic water meter damping structure, comprising an ultrasonic water meter damping main body 1 connected to a pipeline, the ultrasonic water meter damping main body 1 comprising a connecting pipeline 2, a main body 1 arranged on the connecting pipeline 2, a plurality of sound wave transmitters 6 and sound wave receivers arranged on the main body 1, and a display main body 1 arranged on the surface of the main body 1 for processing sound wave transmitter 6 and sound wave receiver data.

[0034] Regarding the connection of the device:

[0035] Both ends of the connecting pipeline 2 are provided with flanges, and the ultrasonic water meter damping main body 1 is connected to the pipeline to be measured through the flanges, and the connecting pipeline 2 and the main body 1 are integrally formed, when the pipeline to be measured is opened, the end-to-end flow appears, at this time the ultrasonic water meter damping main body 1 connected to the pipeline can detect the flow;

[0036] The display main body 1 comprises a display 8 and a data processor embedded in the surface of the main body 1, the display 8 is used to display the flow of water, and the data processor is used to process the sound wave transmitter 6 and sound wave receiver data, and convert the sound wave transmitter 6 and sound wave receiver data into flow data for display through the display 8.

[0037] Because the direction of sound wave transmission is opposite to the direction of flow velocity, the sound wave is slowed down by the fluid, and a time difference is generated, which is proportional to the flow velocity, and then the flow velocity is calculated through the time difference and the matching processor, the essence of the processor is algorithm, which mainly processes the data of time difference, and then calculates the actual flow velocity through the data of time difference, therefore, the data processor is arranged to process the corresponding data, so that the data is converted into flow data;

[0038] As shown in Figure 4

[0039] The main body 1 is provided with a mounting surface around it, the sound wave transmitter 6 and the sound wave receiver can be detachably connected to the mounting surface, and the number of sound wave transmitters 6 and sound wave receivers is at least two groups, because the data generated by one group of sound wave transmitters 6 and sound wave receivers is too small, there is an error, therefore, when the space of the mounting surface is sufficient, a plurality of groups of sound wave transmitters 6 and sound wave receivers should be arranged.

[0040] Regarding the connection of the sound wave transmitter 6 and the sound wave receiver:

[0041] Firstly, a through slot 9 is opened on the mounting surface, the through slot 9 is communicated with the connecting pipeline 2, the through slot 9 is provided with a clamping groove around it, and the clamping groove is connected with a fixing piece for realizing the installation of the sound wave transmitter 6 and the sound wave receiver.

[0042] ​Then, the fixing member includes a fixing column 3 which is as long as the through slot 9 and is inserted into the through slot 9, elastic contact components 4 which are arranged around the fixing column 3 and correspond to the clamping slots one by one, a threaded hole 11 which penetrates through the fixing column 3, and a connecting column which is threadedly connected with the threaded hole 11, and the end of the connecting column is connected with any one of the sound wave transmitter 6 or the sound wave receiver.

[0043] The inner wall of the pipeline is in contact with the elastic contact components 4, the fixing column 3 is no longer in hard contact with the inner wall of the pipeline, but in soft contact through the elastic contact components 4, when the inner wall of the pipeline vibrates, the elastic contact components 4 can effectively offset a part of the vibration, thereby reducing the shaking of the sound wave transmitter 6 and the sound wave receiver;

[0044] Secondly, the fixing column 3 is as long as the through slot 9, so that any one of the sound wave transmitter 6 or the sound wave receiver is connected with the end of the connecting column and located in the connecting pipeline 2, and the fixing column 3 is not exposed in the connecting pipeline 2.

[0045] At this time, the pressure of the flowing water only acts on the sound wave transmitter 6 or the sound wave receiver, and no longer acts on the fixing column 3, the probability of displacement deviation of the fixing column 3 decreases, and the displacement deviation of the sound wave transmitter 6 and the sound wave receiver is reduced;

[0046] Finally, the connection of the fixing column 3:

[0047] The other end of the fixing column 3 is pasted with a fixing plate 7, and the fixing plate 7 is detachably connected with the mounting surface, specifically: a waterproof gasket 13 is arranged at the connection between the fixing plate 7 and the mounting surface, which can effectively avoid the water seepage phenomenon of the through slot 9, as shown in FIG. 4, the size of the fixing plate 7 is larger than that of the through slot 9, and the fixing plate 7 is provided with a connecting hole 12, the mounting surface is provided with a mounting hole 10 corresponding to the connecting hole 12, and a connecting screw is further included, which is threadedly connected with the mounting hole 10 through the connecting hole 12.

[0048] The fixing plate 7 is pasted, because when the position of the sound wave transmitter 6 needs to be adjusted, due to the threaded connection of the threaded hole 11, the fixing plate 7 needs to be torn off, the relative positions of the threaded rod 5 and the fixing column 3 are adjusted, and then the optimal position installation of the sound wave transmitter 6 is realized, and after the optimal position installation is completed, the fixing plate 7 is installed.

[0049] As shown in FIGS. Figure 1 and Figure 4 The sound wave transmitter 6 or the sound wave receiver is arranged one by one, if the sound wave transmitter 6 is located on the upper surface of the main body 1, then the sound wave receiver is located below the main body 1.

[0050] The specific implementation process is as follows:

[0051] The sound wave transmitter 6 or the sound wave receiver is installed one by one in correspondence, and the positions where they are installed along the pipeline are at an angle θ with the pipeline, because the sound wave transmitted downstream is accelerated by the fluid, and the sound wave transmitted upstream is delayed, thereby generating a time difference, and the time difference between them is proportional to the flow rate, and thereby the flow rate is calculated through the time difference and the matched processor.

[0052] The device solves the problem that the sound wave transmitter 6 and the sound wave receiver will produce displacement deviation under the flow rate impact vibration for a long time, thereby causing the θ angle to produce deviation, and finally causing the accuracy of the ultrasonic water meter to have error.

[0053] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application, and any equivalent embodiments with equivalent changes and modifications made to the above embodiments according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A vibration damping structure for an ultrasonic water meter, characterized in that, The ultrasonic water meter vibration damping body is connected to a pipeline. The ultrasonic water meter vibration damping body includes a connecting pipeline, a main body set on the connecting pipeline, a plurality of sound wave transmitters and sound wave receivers set on the main body, and a display body set on the surface of the main body for processing the data of the sound wave transmitters and sound wave receivers.

2. The ultrasonic water meter vibration damping structure according to claim 1, characterized in that, Both ends of the connecting pipe are equipped with flanges, and the ultrasonic water meter vibration damping body is connected to the pipe to be tested through the flanges. The connecting pipe and the body are integrally formed.

3. The ultrasonic water meter vibration damping structure according to claim 2, characterized in that, The display body includes a display and a data processor embedded in the surface of the body. The display is used to display the flow rate of the water, and the data processor is used to process the data from the sound wave transmitter and the sound wave receiver, converting the data from the sound wave transmitter and the sound wave receiver into flow data for display on the display.

4. The ultrasonic water meter vibration damping structure according to claim 2 or 3, characterized in that, The main body is provided with mounting surfaces around its perimeter. Both the sound wave transmitter and the sound wave receiver can be detachably connected to the mounting surfaces, and there are at least two sets of the sound wave transmitter and the sound wave receiver.

5. The ultrasonic water meter vibration damping structure according to claim 4, characterized in that, A through groove is provided on the mounting surface, which is connected to a connecting pipe. A retaining groove is provided around the through groove, and a fastener is connected to the retaining groove and the through groove for mounting the sound wave transmitter and the sound wave receiver.

6. The ultrasonic water meter vibration damping structure according to claim 5, characterized in that, The fastener includes a fixing post of the same length as the through groove and inserted into the through groove, elastic contact parts arranged around the fixing post corresponding one-to-one with the slots, a threaded hole through the fixing post, and a connecting post threadedly connected to the threaded hole. The end of the connecting post is connected to either a sound wave transmitter or a sound wave receiver.

7. The ultrasonic water meter vibration damping structure according to claim 6, characterized in that, The sound wave transmitter or the sound wave receiver is connected to the end of the connecting post and located in the connecting pipe, and the fixing post is not exposed inside the connecting pipe.

8. The ultrasonic water meter vibration damping structure according to claim 6, characterized in that, A fixing plate is attached to the other end of the fixing column, and the fixing plate is detachably connected to the mounting surface.

9. The ultrasonic water meter vibration damping structure according to claim 8, characterized in that, A waterproof gasket is provided at the connection between the fixing plate and the mounting surface.

10. The ultrasonic water meter vibration damping structure according to claim 9, characterized in that, The fixing plate is provided with a connecting hole, and the mounting surface is provided with a mounting hole corresponding to the connecting hole. It also includes a connecting screw, which passes through the connecting hole and is threadedly connected to the mounting hole.

Images