Ultrasonic water meter

Abstract

The invention discloses an ultrasonic water meter which comprises a meter head and a measuring pipeline installed at the bottom of the meter head, two sets of installation holes facing the interior of the meter head are formed in the side portion of the measuring pipeline, and transducers are arranged at the positions of the two sets of installation holes respectively. The reflecting part comprises a connecting section and reflecting sections integrally formed at the two ends of the connecting section, the two reflecting sections directly face the two transducers in a one-to-one correspondence mode, and the sides, close to the connecting section, of the reflecting sections are provided with reflecting slopes. The device has the beneficial effects that the reflecting component is high in installation reliability and stability and accurate in measurement.

Description

TECHNICAL FIELD

[0001] The present application relates to water flow monitoring device, specifically relates to an ultrasonic water meter. BACKGROUND

[0002] The ultrasonic water meter is a new type of water meter which detects the time difference of ultrasonic sound beam in water when it propagates in the same direction and in the opposite direction due to the change of speed, analyzes and processes the flow rate of water to further calculate the flow rate of water. Compared with mechanical water meter, it has the characteristics of high precision, good reliability, wide range, long service life, no moving parts, no need to set parameters, and arbitrary angle installation.

[0003] The common ultrasonic transducer is composed of a meter shell, a matching layer, a piezoelectric ceramic disc transducer, a backing, and a lead cable, and the installation mode has a reflection type and a reflection type. Among them, for the reflection type installation structure, the transducer is usually installed on the side wall of the measuring pipe, and the reflection assembly is installed at the corresponding transducer position in the measuring pipe. The traditional installation mode of the reflection assembly is: two installation channels are arranged in the axial direction inside the measuring pipe, and the reflection sheet is connected with the installation channel. Such installation mode has the technical defects of low stability and reliability. SUMMARY

[0004] Therefore, the present application provides an ultrasonic water meter, which aims to improve the technical defects of low stability and reliability of the traditional reflection assembly installation mode.

[0005] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0006] An ultrasonic water meter, comprising a meter head and a measuring pipe installed at the bottom of the meter head, the side of the measuring pipe is provided with two groups of installation holes facing the inside of the meter head, and each installation hole is provided with a transducer, characterized in that: a reflection component is fixedly assembled inside the measuring pipe, the reflection component comprises a connecting section and reflection sections integrally formed at both ends of the connecting section, the two reflection sections correspond to the two transducers respectively, and the reflection section is provided with a reflection inclined surface on the side close to the connecting section.

[0007] The reflection component adopts an integral metal structure, which has high stability and reliability.

[0008] As a preferred, the upper side of the measuring pipe is provided with a mounting seat protruding outward along the radial direction, the mounting seat extends into the inside of the meter head, the installation hole is formed on the mounting seat, and the transducer is assembled in the installation hole. The above structure stably installs the transducer.

[0009] As preferred: the bracket plate is detachably mounted inside the meter head, and the circuit board is above the bracket plate, the bracket plate is above the mounting seat, two metal pins are integrated on the transducer, the bracket plate is provided with through holes matched with the metal pins, the metal pins pass through the through holes and the circuit board in sequence, and the metal pins are welded with the upper side of the circuit board. With the above structure, the transducer is convenient to assemble and high in reliability.

[0010] As preferred: the reflection component is welded and assembled in the measuring pipe through the connecting section, and the reflection section is a sheet structure completely formed at the end of the connecting section. With the above structure, the reflection component is stably installed to ensure stable use of the ultrasonic water meter.

[0011] As preferred: the connecting section is in a cylindrical structure, and the cross-sectional area of the cylindrical structure is equal to the area of the normal projection of the reflection inclined plane in the vertical plane. With the above structure, the transducer can measure the entire water flow velocity in the pipe.

[0012] As preferred: thickened portions are arranged at the two ends of the cylindrical structure, and the thickened portions are welded with the inside of the measuring pipe. With the above structure, the welding is firm.

[0013] As preferred: a groove is arranged at the upper part of the outer wall of the mounting seat, a first buckle downwardly arranged on the bracket plate is buckled with the groove. With the above structure, the structure is simple, and the installation is convenient.

[0014] As preferred: two second buckles upwardly arranged on the bracket plate and two columns are uniformly distributed, the two second buckles are buckled with the edge of the upper end surface of the circuit board, and the two columns extend above the circuit board, the second buckles and the columns are both provided with support steps, and the circuit board is mounted on the support steps. With the above structure, screwless assembly is achieved, and the integrated assembly of components is realized in the water meter through the buckling structure.

[0015] As preferred: a housing mounting hole matched with the mounting seat is arranged on the housing of the meter head, and the housing mounting hole is welded with the lower part of the mounting seat. With the above structure, the inside of the meter head is sealed.

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

[0017] 1. The reflection component is fixedly assembled in the measuring pipe, the reflection component comprises a connecting section and reflection sections integrally formed at the two ends of the connecting section, and the reflection component is welded and assembled in the measuring pipe through the thickened portions at the two ends of the connecting section, so that the stability and reliability are high.

[0018] 2. The connecting section of the reflection component is in a cylindrical structure, and the cross-sectional area of the cylindrical structure is equal to the area of the normal projection of the reflection inclined plane in the vertical plane, so that the transducer can measure the entire water flow velocity in the pipe.

[0019] 3. The bracket plate and the circuit board are assembled through the clamping structure of the upper and lower sides, and the integrated assembly of the corresponding components in the water meter can be realized without screws. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 The structure diagram of the present application is shown in the figure;

[0021] Figure 2 The sectional view of the present application is shown in the figure;

[0022] Figure 3 The structure diagram of the reflecting component 4 is shown in the figure;

[0023] Figure 4 The internal structure diagram of the present application is shown in the figure;

[0024] Figure 5 The schematic diagram showing the clamping of the first buckle 5b and the groove 2a1 is shown in the figure;

[0025] Figure 6 The schematic diagram showing the installation mode of the circuit board 6 is shown in the figure. DETAILED DESCRIPTION

[0026] The present application is further described below in combination with the embodiments and the drawings.

[0027] As Figure 1 and Figure 2 described, an ultrasonic water meter includes a meter head 1 and a measuring pipe 2 installed at the bottom of the meter head 1, the measuring pipe 2 is provided with two groups of installation holes 2b on the side towards the inside of the meter head 1, one transducer 3 is arranged at the position of each group of installation holes 2b, one transducer emits ultrasonic signals and the other transducer receives ultrasonic signals. The measuring pipe 2 is provided with a mounting seat 2a protruding radially outward on the upper side, the mounting seat 2a extends into the inside of the meter head 1, the installation hole 2b is formed on the mounting seat 2a, the lower part of the installation hole 2b is provided with a support step, and the lower end of the transducer 3 is sealingly installed on the support step through a gasket. The housing 7 of the meter head 1 is provided with a housing installation hole 7a adapted to the mounting seat 2a, and the housing installation hole 7a is welded with the lower part of the mounting seat 2a.

[0028] As Figure 2 and Figure 3The measuring pipe 2 is equipped with a reflective component 4, which includes a connecting section 4a and reflective sections 4b integrally formed at both ends of the connecting section 4a. The two reflective sections 4b correspond one-to-one with the two transducers 3. A reflective inclined surface 4c is provided on the side of the reflective section 4b closest to the connecting section 4a. The reflective component 4 is welded into the measuring pipe 2 via the connecting section 4a. The connecting section 4a is constructed as a cylindrical structure, with thickened portions 4a1 on the outer sides of both ends. The thickened portions 4a1 are welded to the inside of the measuring pipe 2, reducing the contact area between the connecting section and the measuring pipe, thus making the installation more secure. The cross-sectional area of ​​the cylindrical structure is equal to the orthographic projection area of ​​the reflective inclined surface 4c in the vertical plane.

[0029] With this design, the transducer 3 and the reflector 4 work together to have a small impact on the water flow velocity, and can accurately detect and measure the water flow rate in the pipe 2.

[0030] like Figure 2 and Figure 4 The meter head 1 has a detachable bracket plate 5 and a circuit board 6 located above the bracket plate 5. The bracket plate 5 is located above the mounting base 2a. The transducer 3 has two metal pins 3a integrated on it. The bracket plate 5 has through holes 5a that are adapted to the metal pins 3a. The metal pins 3a pass through the through holes 5a and the circuit board 6 in sequence with their heads facing upwards. The metal pins 3a are welded to the upper side of the circuit board 6, making the assembly convenient and reliable.

[0031] like Figure 2 and Figure 5 As shown, the upper part of the outer wall of the mounting base 2a is provided with a groove 2a1, and the bracket plate 5 is provided with a downward first buckle 5b. One mounting base 2a is provided with three buckles 5b. The first buckle 5b is fastened to the groove 2a1 to install the bracket plate 5.

[0032] like Figure 4 and Figure 6 As shown, the bracket plate 5 has two upward-facing second buckles 5c and two columns 5d evenly distributed on it. The two second buckles 5c snap onto the upper edge of the circuit board 6, and the two columns 5d extend to the top of the circuit board 6. Both the second buckles 5c and the columns 5d are provided with support steps. The circuit board 6 is installed on the support steps, which support and limit the lower end of the circuit board 6. The two second buckles 5c fix the upper end of the circuit board 6. The assembly is screwless. Through the snap-fit ​​structure, the components are integrated and assembled inside the water meter.

[0033] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention. Those skilled in the art, under the guidance of the present invention, can make various similar representations without departing from the spirit and claims of the present invention, and such modifications all fall within the protection scope of the present invention.

Claims

1. An ultrasonic water meter, comprising a meter head (1) and a measuring pipe (2) installed at the bottom of the meter head (1), wherein the measuring pipe (2) has two sets of mounting holes (2b) facing the interior of the meter head (1) on its side, and each of the two sets of mounting holes (2b) is provided with a transducer (3), characterized in that: The measuring pipe (2) is fixedly equipped with a reflective component (4). The reflective component (4) includes a connecting section (4a) and reflective sections (4b) integrally formed at both ends of the connecting section (4a). The two reflective sections (4b) are directly opposite the two transducers (3). The reflective section (4b) has a reflective slope (4c) on the side of the reflective section (4b) close to the connecting section (4a).

2. The ultrasonic water meter according to claim 1, characterized in that: The measuring pipe (2) has a mounting seat (2a) that protrudes radially outward on its upper side. The mounting seat (2a) extends into the meter head (1). The mounting hole (2b) is formed on the mounting seat (2a). The transducer (3) is assembled in the mounting hole (2b).

3. The ultrasonic water meter according to claim 2, characterized in that: The meter head (1) is detachably mounted with a bracket plate (5) and a circuit board (6) located above the bracket plate (5). The bracket plate (5) is located above the mounting base (2a). The transducer (3) is integrated with two metal pins (3a). The bracket plate (5) is provided with through holes (5a) that are adapted to the metal pins (3a). The metal pins (3a) pass through the through holes (5a) and the circuit board (6) in sequence with their heads facing upwards. The metal pins (3a) are welded to the upper side of the circuit board (6).

4. The ultrasonic water meter according to claim 1, characterized in that: The reflective component (4) is welded and assembled inside the measuring pipe (2) via the connecting section (4a); the reflective section (4b) is a sheet-like structure that is completely formed at the end of the connecting section (4a).

5. The ultrasonic water meter according to claim 1, characterized in that: The connecting segment (4a) is constructed as a cylindrical structure, and the cross-sectional area of ​​the cylindrical structure is equal to the orthographic projection area of ​​the reflecting slope (4c) in the vertical plane.

6. The ultrasonic water meter according to claim 5, characterized in that: The cylindrical structure has thickened portions (4a1) on both ends of the exterior, and the thickened portions (4a1) are welded to the inside of the measuring pipe (2).

7. The ultrasonic water meter according to claim 3, characterized in that: The mounting base (2a) has a groove (2a1) on the upper part of its outer wall, and the bracket plate (5) has a downward-facing first buckle (5b) that engages with the groove (2a1).

8. The ultrasonic water meter according to claim 1, characterized in that: The support plate (5) is evenly distributed with two upward-facing second buckles (5c) and two uprights (5d). The two second buckles (5c) are engaged with the upper edge of the circuit board (6), and the two uprights (5d) extend above the circuit board (6). Both the second buckles (5c) and the uprights (5d) are provided with support steps, and the circuit board (6) is mounted on the support steps.

9. The ultrasonic water meter according to claim 1, characterized in that: The housing (7) of the meter head (1) is provided with a housing mounting hole (7a) adapted to the mounting base (2a), and the housing mounting hole (7a) is welded to the lower part of the mounting base (2a).

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