Ultrasonic water meter pipeline structure

Abstract

The utility model relates to an ultrasonic water meter pipeline structure which comprises the following components: 1) a copper pipeline which is provided with a transducer assembly and a reflection column assembly, and the transducer assembly and the reflection column assembly form a Z-shaped reflection mode; the rectifier is installed at the inlet end of the copper pipeline, and rectifying strips protruding towards the center direction are evenly distributed on the rectifier along the inner wall of the rectifier; according to the ultrasonic water meter, through the through pipeline, the rectifier and the plastic flow channel which are structurally arranged, flow is measured through a propagation velocity difference method, and the problems that in a traditional ultrasonic water meter metering scheme, the ultrasonic water meter is affected by various metering interferences, and metering is inaccurate due to pipeline impurity accumulation are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic flowmeters, and in particular relates to an ultrasonic water meter pipeline structure. Background Art

[0002] Ultrasonic water meter is a new type of water meter that has been widely used since the 1970s with the rapid development of electronic technology. It uses the characteristic that ultrasound can carry the flow velocity signal of the fluid when it flows through the fluid. By receiving and processing the ultrasound flowing through the fluid, the flow velocity of the fluid can be detected and then converted into flow rate.

[0003] Ultrasonic water meters are generally composed of ultrasonic transducers, transmitting and receiving circuits, signal processing circuits and integration systems. According to different measurement principles, ultrasonic water meters can be roughly divided into Doppler method, propagation velocity difference method, wave velocity offset method and noise method. Traditional ultrasonic water technology solutions still have shortcomings. There are obstructions inside the pipeline. When there are debris in the pipeline, it is easy to block the pipeline components. After long-term use, the accumulation of debris will affect the measurement accuracy. In addition, traditional ultrasonic water meters are easily affected by the front and rear straight pipe sections and pipeline vortices, and the measurement accuracy cannot be accurately measured, which will cause water losses to water companies or end users. Utility Model Content

[0004] In view of the problems existing in the prior art, the purpose of the design of the utility model is to provide an ultrasonic water meter pipeline structure to solve the problems existing in the traditional ultrasonic water meter measurement scheme, such as the influence of various measurement interferences and the inaccurate measurement caused by the accumulation of impurities in the pipeline, which is specifically achieved through the following technical solutions:

[0005] An ultrasonic water meter pipeline structure, the pipeline structure comprising:

[0006] 1) Copper pipe: a transducer assembly and a reflective column assembly are arranged on the copper pipe, and the transducer assembly and the reflective column assembly form a Z-shaped reflection mode to increase the propagation path of the ultrasonic wave;

[0007] 2) Rectifier: installed at the inlet end of the copper pipe, and the rectifier is evenly distributed along its inner wall with rectifier strips protruding toward the center;

[0008] 3) Plastic flow channel: a flow channel for water to flow through;

[0009] The surfaces of the rectifier and the plastic flow channel are both provided with arc bosses, and the inner wall of the copper pipe is provided with grooves that are tightly matched with the arc bosses. The matching connection between the bosses and the grooves prevents the plastic flow channel and the rectifier from loosening and rotating.

[0010] Furthermore, the transducer assembly includes a first transducer and a second transducer arranged diagonally opposite to each other, and the reflective column assembly includes a first reflective column and a second reflective column respectively arranged on both sides of the copper pipe, and the installation direction of the first reflective column and the second reflective column is perpendicular to the water flow direction.

[0011] Further, the first reflection column and the second reflection column are installed on the copper pipe between the first transducer and the second transducer.

[0012] Furthermore, the angle between the first transducer and the second transducer and the copper pipe is 50°, and the first transducer and the second transducer are fixedly connected to the copper pipe through copper pressure rings respectively; the first reflective column and the second reflective column are respectively tightened and fixed on the copper pipe by threads arranged thereon.

[0013] Furthermore, the thickness of the first reflective column and the second reflective column is 12 mm, the diameter of the reflective surface is 15 mm, and the smoothness of the reflective surface is 0.8.

[0014] Furthermore, 8 straightening bars are provided, the thickness of the straightening bars is 1.5 mm, and the center distance between the straightening bars is 12 mm.

[0015] Furthermore, the cross-sections of both ends of the plastic flow channel are circular, and gradually shrink inward from both ends to form an elliptical flow channel.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1) The installation structure of the transducer and the reflective column of the present invention enables the ultrasonic transducer to be reflected in a Z-shape, which effectively increases the propagation path of the ultrasonic wave, makes the propagation speed difference larger, and makes the measurement more accurate;

[0018] 2) The present invention can effectively cut the water flow vortex at the water inlet and various complex working conditions by setting 8 claw-type rectifiers, so that the water flow can maintain a stable state after passing through the claw-type rectifier, thereby improving the accuracy of measurement;

[0019] 3) The present invention sets an elliptical flow channel to ensure that the center speed of the flow channel is faster when the flow rate is small, further increasing the propagation speed difference and achieving higher precision in small flow measurement. At the same time, it has a stable fluid state of water flow, reduces vortices, and improves the anti-interference ability of ultrasonic water meters;

[0020] 4) The present invention adopts a special reflective column structure with a certain thickness to reduce the transmission loss of the ultrasonic wave emitted by the transducer, so that the ultrasonic wave signal is more concentrated, the anti-interference ability of the ultrasonic water meter is enhanced, and the measurement accuracy of the ultrasonic water meter is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a cross-sectional view of the utility model;

[0022] Figure 2 This is an exploded view of the utility model;

[0023] Figure 3 is a cross-sectional view of the rectifier;

[0024] Figure 4 is a cross-sectional view of a rectifier;

[0025] Figure 5 is a cross-sectional view of the plastic flow channel;

[0026] Figure 6 It is a cross-sectional view of the plastic flow channel;

[0027] Figure 7 This is the structural diagram of the reflection column;

[0028] In the figure, 1-through pipe, 101-first transducer, 102-second transducer, 103-first reflection column, 104-second reflection column, 105-copper pressing ring, 2-rectifier, 201-rectifier bar, 3-plastic flow channel. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings in order to better understand the technical solution.

[0030] like Figure 1-2 As shown, an ultrasonic water meter pipeline structure includes a copper pipeline 1 and a rectifier 2 and a plastic flow channel 3 arranged inside the copper pipeline 1. The rectifier 2 and the plastic flow channel 3 are provided with arc bosses on their surfaces, and the inner wall of the copper pipeline 1 is provided with grooves that are tightly matched with the arc bosses. The matching connection between the bosses and the grooves prevents the plastic flow channel 3 and the rectifier 2 from loosening or rotating.

[0031] Among them, the copper pipe 1 is provided with a transducer assembly and a reflection column assembly, the transducer assembly includes a first transducer 101 and a second transducer 102 arranged diagonally opposite to each other, the reflection column assembly includes a first reflection column 103 and a second reflection column 104 arranged on both sides of the copper pipe 1, and the first reflection column 103 and the second reflection column 104 are installed on the copper pipe 1 between the first transducer 101 and the second transducer 102. This setting enables the ultrasonic transducer to adopt a Z-shaped refraction method, and in the forward flow, the first transducer 101 emits to the second reflection column 104, and is reflected to the first reflection column 103 by the second reflection column 104, and finally received by the second transducer 102, and the reverse flow is the opposite. The advantage of this method is that after the ultrasonic wave is reflected twice, the distance traveled by the sound wave is longer, and the time difference between the forward flow and the reverse flow of the transducer will be larger, which is conducive to improving the measurement accuracy of the ultrasonic water meter.

[0032] Continue reading Figure 1-2 The first transducer 101 and the second transducer 102 are fixedly connected to the copper pipe 1 through the copper pressure ring 105 respectively, and the first reflection column 103 and the second reflection column 104 are respectively tightened and fixed on the copper pipe 1 by the threads arranged thereon, and the installation direction of the first reflection column 103 and the second reflection column 104 is perpendicular to the water flow direction, and the angle between the first transducer 101 and the second transducer 102 and the copper pipe 1 is 50°, which effectively increases the sound path and reduces the vortex of the transducer to a certain extent.

[0033] like Figure 1 , 3 -4, the rectifier 2 is installed at the inlet end of the copper pipe 1, and the rectifier 2 is evenly provided with 8 rectifier strips 201 protruding toward the center along its inner wall, forming a claw-shaped rectifier, the rectifier strip 201 is 1.5mm thick and has an angle of 1°, the center spacing of the rectifier strip 201 is 12mm, its depth is 27.5mm, and its head R angle diameter is 6.5mm. After the complex water flow at the water inlet enters the rectifier, its vortex and turbulence state will be cut by the rectifier strip, so that it can enter the interior of the pipe more smoothly and regularly.

[0034] like Figure 1-2 As shown in Figures 5-6, the plastic flow channel 3 for water flow adopts a gradient of a rounded ellipse, and the inlet is a circle with a diameter of 25 mm. The water flow cross-sectional area in the central area is reduced by a gradient, and one side is reduced to 13 mm. The sound path between the first transducer 101, the second transducer 102 and the first reflection column 103 and the second reflection column 104 is not reduced, so that the flow rate is faster than that of a non-gradient circle, which can further increase the time difference between the forward flow and the reverse flow, thereby improving the metering accuracy and metering stability.

[0035] like Figure 1 , 7 As shown, the first reflection column 103 and the second reflection column 104 are made of 304 stainless steel with a thickness of 12 mm, a reflection surface diameter of 15 mm, and a reflection surface finish of 0.8. Through calculation and testing, it is found that increasing the thickness to 12 mm can effectively reduce the transmission of sound waves, reduce losses, and effectively increase the signal strength of ultrasonic waves, thereby improving the anti-interference and anti-disturbance of ultrasonic waves, making ultrasonic water meter measurement more accurate.

Claims

1. An ultrasonic water meter pipeline structure, characterized in that: The pipeline structure includes: 1) Copper pipe (1): a transducer assembly and a reflective column assembly are arranged on the copper pipe, wherein the transducer assembly and the reflective column assembly form a Z-shaped reflection mode to increase the propagation path of the ultrasonic wave; 2) Rectifier (2): installed at the inlet end of the copper pipe (1), and the rectifier (2) is evenly provided with rectifier strips (201) protruding toward the center along the inner wall thereof; 3) Plastic flow channel (3): a flow channel for water to flow through; The surfaces of the rectifier (2) and the plastic flow channel (3) are both provided with arc bosses, and the inner wall of the copper pipe (1) is provided with grooves that tightly match the arc bosses. The bosses and the grooves are connected in a coordinated manner so that the plastic flow channel (3) and the rectifier (2) will not loosen or rotate.

2. An ultrasonic water meter pipeline structure as claimed in claim 1, characterized in that The transducer assembly comprises a first transducer (101) and a second transducer (102) which are arranged diagonally opposite to each other, and the reflective column assembly comprises a first reflective column (103) and a second reflective column (104) which are arranged on both sides of the copper pipe (1), and the installation direction of the first reflective column (103) and the second reflective column (104) is perpendicular to the water flow direction.

3. An ultrasonic water meter pipeline structure as claimed in claim 2, characterized in that The first reflection column (103) and the second reflection column (104) are installed on the copper pipe (1) between the first transducer (101) and the second transducer (102).

4. An ultrasonic water meter pipeline structure as claimed in claim 2, characterized in that The angle between the first transducer (101) and the second transducer (102) and the copper pipe (1) is 50°, and the first transducer (101) and the second transducer (102) are fixedly connected to the copper pipe (1) via copper pressing rings (105); the first reflection column (103) and the second reflection column (104) are respectively screwed and fixed to the copper pipe (1) via threads provided thereon.

5. The ultrasonic water meter pipeline structure according to claim 2, characterized in that The thickness of the first reflection column (103) and the second reflection column (104) is 12 mm, the diameter of the reflection surface is 15 mm, and the smoothness of the reflection surface is 0.

8.

6. The ultrasonic water meter pipeline structure according to claim 1, characterized in that The rectifying bars (201) are provided with 8 pieces, the thickness of the rectifying bars (201) is 1.5 mm, and the center distance between the rectifying bars (201) is 12 mm.

7. The ultrasonic water meter pipeline structure according to claim 1, characterized in that The cross-sections of both ends of the plastic flow channel (3) are circular, and gradually decrease inward from both ends to form an elliptical flow channel.

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