Double-channel ultrasonic metering water meter

Abstract

The utility model relates to the technical field of measuring water meter manufacturing, in particular to a double-channel ultrasonic measuring water meter. A liquid inlet channel and a liquid outlet channel are formed in the shell at the same time. The first fluid flow measuring assembly and the second fluid flow measuring assembly are used for measuring the flow of liquid flowing through the liquid inlet channel and the liquid outlet channel respectively. The first fluid temperature measuring assembly and the second fluid temperature measuring assembly are used for measuring the real-time temperature of liquid flowing through the liquid inlet channel and the liquid outlet channel respectively. Therefore, on one hand, even if the water valve is closed, pure water can continuously circulate in the pipeline, so that the generation amount of harmful substances or bacteria can be effectively reduced; on the other hand, when the water consumption is suspended, the measured flow values of the liquid inlet channel and the liquid outlet channel tend to be the same at the same time, namely, the water consumption tends to be zero; and on the other hand, the temperatures of the pure water in the liquid inlet channel and the liquid outlet channel are measured in real time, and the measured flow values are compensated and corrected according to the temperatures of the pure water in the liquid inlet channel and the liquid outlet channel.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring water meter manufacturing, in particular to a double-channel ultrasonic measuring water meter. Background Art

[0002] Ultrasonic water meter is a new type of water meter that detects the time difference caused by the change in speed when the ultrasonic sound beam propagates downstream and upstream in water, analyzes and processes the water flow rate, and further calculates the water flow rate.

[0003] With the progress of society and the development of science and technology, pure water supply has been used more and more widely, such as laboratory environment, pharmaceutical production line and high-end residential drinking water supply. As far as the current status of the industry is concerned, most of them use single-channel ultrasonic water meters to measure water consumption, which is then used as the basis for charging. However, in practical applications, there are the following problems: when a user does not need pure water supply temporarily and the water valve is closed, the flow path of pure water is blocked and the flow rate drops to zero. In this way, pure water is infiltrated by the pipe wall material and a large amount of harmful substances are mixed in it. Furthermore, when the water flow is stationary, it is very easy to breed bacteria in pure water due to various factors such as oxygen penetration and light transmittance in the water pipe, and as the duration increases, the amount of bacteria accumulates, which eventually makes it difficult for pure water quality to meet the standards. Therefore, it is urgent for technical personnel to solve the above problems. Utility Model Content

[0004] Therefore, in view of the above existing problems and defects, the research and development team of the utility model collected relevant information, conducted multiple evaluations and considerations, and continuously experimented and modified the research and development team, which eventually led to the emergence of the dual-channel ultrasonic water meter.

[0005] In order to solve the above technical problems, the utility model relates to a dual-channel ultrasonic water meter, including a shell, a first fluid flow measurement component, a second fluid flow measurement component, a first fluid temperature measurement component and a second fluid temperature measurement component. A liquid inlet channel and a liquid outlet channel are formed in the shell at the same time, and the two are parallel to each other. The first fluid flow measurement component and the second fluid flow measurement component both use the shell as an assembly basis to respectively measure the flow of the liquid flowing through the liquid inlet channel and the liquid outlet channel. The first fluid temperature measurement component and the second fluid temperature measurement component both use the shell as an assembly basis to respectively measure the real-time temperature value of the liquid flowing through the liquid inlet channel and the liquid outlet channel.

[0006] As a further improvement of the technical solution disclosed in the utility model, the first fluid flow measurement component includes an ultrasonic transducer a, an ultrasonic transducer b, an ultrasonic reflector a and an ultrasonic reflector b. A mounting hole a is formed in the shell for embedding the ultrasonic transducer a and communicating with the liquid inlet channel. A mounting hole b is formed in the shell for embedding the ultrasonic transducer b and communicating with the liquid inlet channel. When the ultrasonic reflector a and the ultrasonic reflector b are inserted into place relative to the liquid inlet channel, the ultrasonic transducers a and b respectively correspond to the reflective surfaces on the ultrasonic reflectors a and b.

[0007] As a further improvement of the technical solution disclosed in the utility model, a plug-in groove and b plug-in groove are simultaneously formed on the side wall of the liquid inlet channel to respectively plug in a ultrasonic reflector and b ultrasonic reflector.

[0008] As a further improvement of the technical solution disclosed in the utility model, the design structures of ultrasonic reflector a and ultrasonic reflector b are mirror images. Ultrasonic reflector a is a sheet metal part, which is composed of an insertion section and a reflection section. The reflection section is formed by continuing to extend the insertion section and twisting it according to a set angle.

[0009] As a further improvement of the technical solution disclosed in the utility model, the first fluid flow measurement component also includes a sealing ring and a sealing ring. The sealing ring a and the sealing ring b are used to match the ultrasonic transducer a and the ultrasonic transducer b respectively. When the ultrasonic transducer a is pressed into place relative to the mounting hole a, the sealing ring a is elastically deformed due to the combined extrusion force from the ultrasonic transducer a and the housing. When the ultrasonic transducer b is pressed into place relative to the mounting hole b, the sealing ring b is elastically deformed due to the combined extrusion force from the ultrasonic transducer b and the housing.

[0010] As a further improvement of the technical solution disclosed in the utility model, the first fluid temperature measurement assembly includes a first water temperature sensor. A C mounting hole for embedding the first water temperature sensor and communicating with the liquid inlet channel is formed in the housing.

[0011] As a further improvement of the technical solution disclosed in the utility model, the first fluid temperature measurement assembly also includes an e-seal ring. Along its length direction, a plurality of annular grooves parallel to each other for the e-seal ring to be embedded are provided on the peripheral side wall of the first water temperature sensor. When the first water temperature sensor is pressed into place relative to the c mounting hole, the e-seal ring is elastically deformed due to the combined extrusion force from the first water temperature sensor and the housing.

[0012] As a further improvement of the technical solution disclosed in the utility model, the dual-channel ultrasonic water meter also includes a first pressing plate. The first pressing plate is used to simultaneously axially press the ultrasonic transducer a, the ultrasonic transducer b and the first water temperature sensor, and three threading holes are formed on the first pressing plate in a corresponding manner. The first pressing plate is detachably fixedly connected to the housing by means of screws.

[0013] In practical applications, the dual-channel ultrasonic water meter disclosed in the utility model has achieved at least the following beneficial technical effects, specifically:

[0014] 1) The dual-channel ultrasonic water meter has both a liquid inlet channel and a liquid outlet channel, which are connected with multiple sections of pipelines with different functions to form a closed-loop water circulation circuit. In this way, even when the water valve is closed, the water flow can continue to circulate in the pipeline, thereby effectively reducing the generation rate and cumulative amount of harmful substances or bacteria, and is particularly suitable for pure water supply occasions;

[0015] 2) The inlet and outlet channels are independently equipped with fluid flow measurement components, and the difference between the two is used to obtain the user's water consumption per unit time. In actual applications, when the water valve is closed, although the pure water always maintains a circulating flow state in the pipeline, at the same time, the measured flow rates of the inlet and outlet channels tend to be the same, which means that the water consumption tends to zero. At this time, the reading of the water meter remains unchanged;

[0016] 3) Both fluid flow measurement components are independently equipped with fluid temperature measurement components. In specific applications, the fluid temperature measurement components are used to measure the temperature of pure water in the inlet channel and the outlet channel in real time, and the flow values ​​measured are compensated and corrected accordingly to eliminate the occurrence of excessive flow value deviation caused only by the difference in water temperature values ​​in each flow area. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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 described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a three-dimensional schematic diagram of a dual-channel ultrasonic water meter in the utility model.

[0019] Figure 2 yes Figure 1 Top view of the .

[0020] Figure 3 yes Figure 2AA section view.

[0021] Figure 4 yes Figure 2 BB cross-sectional view.

[0022] Figure 5 It is a top view of the shell of the dual-channel ultrasonic water meter of the utility model.

[0023] Figure 6 yes Figure 5 CC cross-sectional view.

[0024] Figure 7 yes Figure 5 DD cross-sectional view.

[0025] Figure 8 The utility model is a three-dimensional schematic diagram of an ultrasonic reflector in a dual-channel ultrasonic measuring water meter.

[0026] Fig. 9 The utility model is a three-dimensional schematic diagram of an ultrasonic wave reflecting element B in a dual-channel ultrasonic water meter.

[0027] Fig.10 It is a semi-split schematic diagram of a dual-channel ultrasonic water meter in the utility model (with the upper half of the shell hidden).

[0028] 1-housing; 11-liquid inlet channel; 111-a insertion groove; 112-b insertion groove; 12-liquid outlet channel; 121-c insertion groove; 122-d insertion groove; 13-a mounting hole; 14-b mounting hole; 15-c mounting hole; 16-d mounting hole; 17-e mounting hole; 18-f mounting hole; 2-first fluid flow measurement component; 21-a ultrasonic transducer; 22-b ultrasonic transducer; 23-a ultrasonic reflector; 231-a insertion section; 232-a reflection section; 24-b ultrasonic reflector; 241-b plug-in section; 242-b reflecting section; 25-a sealing ring; 26-b sealing ring; 3-second fluid flow measurement assembly; 31-c ultrasonic transducer; 32-d ultrasonic transducer; 33-c ultrasonic reflecting element; 34-d ultrasonic reflecting element; 35-c sealing ring; 36-d sealing ring; 4-first fluid temperature measurement assembly; 41-first water temperature sensor; 42-e sealing ring; 5-second fluid temperature measurement assembly; 51-second water temperature sensor; 52-f sealing ring; 6-first pressure plate; 7-second pressure plate. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the present invention in conjunction with specific embodiments. Figure 1-4As shown in the figure, the dual-channel ultrasonic water meter mainly consists of a housing 1, a first fluid flow measurement component 2, and a second fluid flow measurement component 3. The housing 1 is an injection molded part, and the liquid inlet channel 11 and the liquid outlet channel 12 are directly molded simultaneously during the injection molding process, and the two channels are kept parallel (such as Figure 5-7 The first fluid flow measurement component 2 and the second fluid flow measurement component 3 are both assembled with the housing 1 as the base, and are used to measure the flow of the liquid flowing through the liquid inlet channel 11 and the liquid outlet channel 12 respectively.

[0030] As a further refinement of the above technical solution, Figure 5-7 As shown in the figure, the first fluid flow measurement component 2 is mainly composed of several parts such as a ultrasonic transducer 21, b ultrasonic transducer 22, a ultrasonic reflector 23 and b ultrasonic reflector 24. A mounting hole 13 for embedding the a ultrasonic transducer 21 and intersecting the liquid inlet channel 11 is formed in the housing 1. A mounting hole 14 (as shown in FIG. 1 ) for embedding the b ultrasonic transducer 22 and intersecting the liquid inlet channel 11 is formed in the housing 1. Figure 5-7 As shown in ). The ultrasonic reflector a 23 and the ultrasonic reflector b 24 are used to adapt to the ultrasonic transducer a 21 and the ultrasonic transducer b 22, respectively. After the two are inserted into place relative to the liquid inlet channel 11, the ultrasonic transducer a 21 and the ultrasonic transducer b 22 are respectively aligned with the reflective surfaces on the ultrasonic reflector a 23 and the ultrasonic reflector b 24 (as shown in ). Figure 3-4 In practical applications, when water flows through the liquid inlet channel 11, the ultrasonic transducer a 21 and the ultrasonic transducer b 22 emit and receive ultrasonic waves alternately. When ultrasonic waves propagate in the water, the flow velocity of the water will affect the propagation time of the ultrasonic waves. By measuring the propagation time of the ultrasonic waves in the upward and downward directions in the fluid, the flow velocity of the water can be calculated, and then the flow rate of the water can be calculated.

[0031] The second fluid flow measurement component 3 has the same design structure as the first fluid flow measurement component 2. Figure 3 , 4 As shown in the figure, the second fluid flow measurement assembly 3 is mainly composed of several parts such as c ultrasonic transducer 31, d ultrasonic transducer 32, c ultrasonic reflector 33 and d ultrasonic reflector 34. A d mounting hole 16 for embedding c ultrasonic transducer 31 and intersecting with the liquid outlet channel 12 is formed in the housing 1. An e mounting hole 17 (as shown in FIG. 1 ) for embedding d ultrasonic transducer 32 and intersecting with the liquid outlet channel 12 is formed in the housing 1. Figure 5-7As shown in ). The c ultrasonic reflector 33 and the d ultrasonic reflector 34 are used to adapt the c ultrasonic transducer 31 and the d ultrasonic transducer 32 respectively, and after the two are inserted in place relative to the liquid outlet channel 12, the c ultrasonic transducer 31 and the d ultrasonic transducer 32 respectively correspond to the reflection surfaces of the c ultrasonic reflector 33 and the d ultrasonic reflector 34. The second fluid flow measurement component 3 has the same working principle as the first fluid flow measurement component 2, and in order to save space, it will not be repeated here.

[0032] In practical applications, the dual-channel ultrasonic water meter disclosed in the utility model has achieved at least the following beneficial technical effects, specifically:

[0033] 1) The dual-channel ultrasonic water meter has both a liquid inlet channel 11 and a liquid outlet channel 12, which are connected with multiple sections of pipelines with different functions to form a closed-loop water circulation path. In this way, even when the water valve is closed, the water flow can continue to circulate in the pipeline, thereby effectively reducing the generation rate and cumulative amount of harmful substances or bacteria, and is particularly suitable for pure water supply occasions;

[0034] 2) The inlet channel 11 and the outlet channel 12 are independently equipped with the first fluid flow measurement component 2 and the second fluid flow measurement component 3, and the water consumption per unit time of the user is obtained by comparing the difference between the two. In practical applications, when the water valve is closed, although the pure water always maintains a circulating flow state in the pipeline, at the same time, the measured flow rates of the inlet channel 11 and the outlet channel 12 tend to be the same, which means that the water consumption tends to zero. At this time, the reading of the water meter remains unchanged;

[0035] As mentioned above, the first fluid flow measurement component 2 and the second fluid flow measurement component 3 both adopt the propagation time method to measure the flow rate of the flowing water. From the measurement principle, it can be seen that the flow value is affected by the direction of the water flow. However, after long-term experimental data accumulation, the water temperature will also affect the time difference, and then after data calculation and amplification, it is very easy to cause the accuracy of the measured flow value to exceed the tolerance, and finally cause the reading error of the dual-channel ultrasonic metering water meter to exceed the tolerance seriously. In view of this, as a further optimization of the above technical solution, if Figure 1-4 As shown in the figure, the dual-channel ultrasonic water meter is further provided with a first fluid temperature measuring component 4 and a second fluid temperature measuring component 5. The first fluid temperature measuring component 4 and the second fluid temperature measuring component 5 are both assembled on the housing 1 to measure the real-time temperature value of the liquid flowing through the liquid inlet channel 11 and the liquid outlet channel 12 respectively. The main component of the first fluid temperature measuring component 4 is a first water temperature sensor 41. A mounting hole 15 (such as a hole 15) for embedding the first water temperature sensor 41 and communicating with the liquid inlet channel 11 is formed in the housing 1. Figure 5-7The second fluid temperature measuring assembly 5 is mainly composed of a second water temperature sensor 51. A mounting hole 18 (as shown in FIG. 1 ) for embedding the second water temperature sensor 51 and intersecting the liquid outlet channel 12 is formed in the housing 1. Figure 5-7 As shown in ). In this way, in a specific application, the first fluid temperature measuring component 4 and the second fluid temperature measuring component 5 are used to measure the temperature of the pure water in the liquid inlet channel 11 and the liquid outlet channel 12 in real time, and the flow value measured by the first fluid flow measuring component 2 and the second fluid flow measuring component 3 is compensated and corrected accordingly, so as to eliminate the occurrence of excessive flow value deviation caused only by the difference in water temperature values ​​in each flow area.

[0036] Furthermore, if Figure 5-7 As shown in FIG. 10 , a insertion groove 111 and b insertion groove 112 are formed on the side wall of the liquid inlet channel 11 to insert the ultrasonic reflector 23 and the ultrasonic reflector 24, respectively. C insertion groove 121 and d insertion groove 122 are formed on the side wall of the liquid outlet channel 12 to insert the ultrasonic reflector 33 and the ultrasonic reflector 44, respectively. In this way, not only the assembly difficulty is effectively reduced, the assembly time is greatly reduced, but also the ultrasonic reflector 23, the ultrasonic reflector 24, the ultrasonic reflector 33 and the ultrasonic reflector 44 are accurately assembled, and the ultrasonic reflector 23, the ultrasonic reflector 24, the ultrasonic reflector 33 and the ultrasonic reflector 44 are accurately assembled, and the ultrasonic reflector 23, the ultrasonic reflector 24, the ultrasonic reflector 33 and the ultrasonic reflector 44 are accurately assembled under the clamping force ...3, the ultrasonic reflector 24, the ultrasonic reflector 33 and the ultrasonic reflector 44 are accurately assembled under the clamping force, and the ultrasonic reflector 23, the ultrasonic reflector 23, the ultrasonic reflector 24, the ultrasonic reflector 33 and the ultrasonic reflector 44 are accurately assembled under the clamping force, and the ultrasonic reflector

[0037] It is known that the ultrasonic reflector a 23 and the ultrasonic reflector b 24 can adopt a variety of design structures to achieve directional reflection of ultrasonic waves. However, a technical solution with a simple design structure and easy manufacturing and implementation is recommended here, specifically: Figure 8 , 9 As shown in the figure, the design structures of the ultrasonic reflector a 23 and the ultrasonic reflector b 24 are mirror images. The ultrasonic reflector a 23 is a sheet metal part, which is composed of the inserting section a 231 and the reflecting section a 232. The reflecting section a 232 is formed by continuing to extend the inserting section a 231 and twisting it at a set angle. The ultrasonic reflector b 24 is also a sheet metal part, which is composed of the inserting section b 241 and the reflecting section b 242. The reflecting section b 242 is formed by continuing to extend the inserting section b 241 and twisting it at a set angle.

[0038] Compared with the ultrasonic reflectors a 23 and b 24 , the ultrasonic reflectors c 33 and d 34 have the same design structure and working principles, and are not described in detail here for the sake of space saving.

[0039] As is known, the housing 1 is internally provided with a computing circuit board and other circuit components, which are very likely to fail after being damp or wetted by water, thereby causing functional damage to the dual-channel ultrasonic water meter. In view of this, as a further optimization of the above technical solution, Figure 3 As shown in , for the sealing measures of the liquid inlet channel 11, the first fluid flow measurement component 2 is additionally provided with an a sealing ring 25 and a b sealing ring 26. The a sealing ring 25 and the b sealing ring 26 are used to match the a ultrasonic transducer 21 and the b ultrasonic transducer 22 respectively. The first fluid temperature measurement component 4 is additionally provided with an e sealing ring 42. Along its length direction, a plurality of annular grooves parallel to each other for the e sealing ring 42 to be embedded are provided on the peripheral side wall of the first water temperature sensor 41. When the a ultrasonic transducer 21 is pressed into place relative to the a mounting hole 13, the a sealing ring 25 is elastically deformed due to the joint extrusion force from the a ultrasonic transducer 21 and the housing 1. When the b ultrasonic transducer 22 is pressed into place relative to the b mounting hole 14, the b sealing ring 26 is elastically deformed due to the joint extrusion force from the b ultrasonic transducer 22 and the housing 1. When the first water temperature sensor 41 is pressed into place relative to the c mounting hole 15, the e sealing ring 42 is elastically deformed due to the combined extrusion force from the first water temperature sensor 41 and the housing 1. In this way, when the water flows through the liquid inlet channel 11, the a sealing ring 25, the b sealing ring 26 and the e sealing ring 42 are elastically deformed due to the pressure, so that the assembly gap can be reliably blocked, thereby effectively preventing the water from overflowing and wetting the electrical components.

[0040] like Figure 4 As shown in , for the sealing measures of the liquid outlet channel 12, the second fluid flow measurement component 3 is additionally provided with a c sealing ring 35 and a d sealing ring 36. The c sealing ring 35 and the d sealing ring 36 are used to match the c ultrasonic transducer 31 and the d ultrasonic transducer 32 respectively. The second fluid temperature measurement component 5 is additionally provided with an f sealing ring 52. Along its length direction, a plurality of annular grooves parallel to each other for the f sealing ring 52 to be embedded are provided on the peripheral side wall of the second water temperature sensor 51. When the c ultrasonic transducer 31 is pressed into place relative to the d mounting hole 16, the c sealing ring 35 is elastically deformed due to the common extrusion force from the c ultrasonic transducer 31 and the housing 1. When the d ultrasonic transducer 32 is pressed into place relative to the e mounting hole 17, the d sealing ring 36 is elastically deformed due to the common extrusion force from the d ultrasonic transducer 32 and the housing 1. When the second water temperature sensor 51 is pressed into place relative to the f installation hole 18 , the f sealing ring 52 is elastically deformed due to the combined extrusion force from the second water temperature sensor 51 and the housing 1 .

[0041] Figure 1-4As shown in , the dual-channel ultrasonic water meter is further provided with a first pressing plate 6 and a second pressing plate 7. The first pressing plate 6 is used to simultaneously apply axial pressure to the ultrasonic transducer a 21, the ultrasonic transducer b 22 and the first water temperature sensor 41, and three threading holes are formed thereon in a corresponding manner. The second pressing plate 7 is used to simultaneously apply axial pressure to the ultrasonic transducer c 31, the ultrasonic transducer d 32 and the second water temperature sensor 51, and three threading holes are formed thereon in a corresponding manner. In this way, after ultrasonic transducer a 21, ultrasonic transducer b 22, first water temperature sensor 41, ultrasonic transducer c 31, ultrasonic transducer 32 d and second water temperature sensor 51 are installed relative to shell 1, they are pressed with the help of first pressing plate 6 and second pressing plate 7, and both are detachably fixedly connected with shell 1 with the help of screws, ensuring that ultrasonic transducer a 21, ultrasonic transducer b 22, first water temperature sensor 41, ultrasonic transducer c 31, ultrasonic transducer 32 d and second water temperature sensor 51 can be accurately positioned and assembled, and there will be no position change problem due to the action of exciting force or water flow impact force in subsequent long-term applications.

[0042] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A dual-channel ultrasonic water meter, characterized in that: The device comprises a housing, a first fluid flow measurement component, a second fluid flow measurement component, a first fluid temperature measurement component and a second fluid temperature measurement component; a liquid inlet channel and a liquid outlet channel are formed in the housing at the same time, and the two are parallel to each other; the first fluid flow measurement component and the second fluid flow measurement component are both assembled with the housing as a basis, so as to measure the flow of the liquid flowing through the liquid inlet channel and the liquid outlet channel respectively; The first fluid temperature measurement component and the second fluid temperature measurement component are both assembled with the shell as a basis, so as to respectively measure the real-time temperature value of the liquid flowing through the liquid inlet channel and the liquid outlet channel.

2. The dual-channel ultrasonic water meter according to claim 1, characterized in that: The first fluid flow measurement component includes an ultrasonic transducer a, an ultrasonic transducer b, an ultrasonic reflector a and an ultrasonic reflector b; a mounting hole a is formed in the shell and is used to embed the ultrasonic transducer a and is communicated with the liquid inlet channel; a mounting hole b is formed in the shell and is used to embed the ultrasonic transducer b and is communicated with the liquid inlet channel; when the ultrasonic reflector a and the ultrasonic reflector b are inserted into place relative to the liquid inlet channel, the ultrasonic transducer a and the ultrasonic transducer b respectively correspond to the reflective surfaces on the ultrasonic reflector a and the ultrasonic reflector b and are kept in alignment with each other.

3. The dual-channel ultrasonic water meter according to claim 2, characterized in that: An inserting groove a and an inserting groove b are simultaneously formed on the side wall of the liquid inlet channel, so as to insert the ultrasonic reflecting member a and the ultrasonic reflecting member b respectively.

4. The dual-channel ultrasonic water meter according to claim 2, characterized in that: The design structures of the ultrasonic reflector a and the ultrasonic reflector b are mirror images; the ultrasonic reflector a is a sheet metal part, which is composed of an insertion section and a reflection section; the reflection section is formed by continuing to extend the insertion section and twisting it according to a set angle.

5. The dual-channel ultrasonic water meter according to claim 2, characterized in that: The first fluid flow measurement component also includes a sealing ring a and a sealing ring b; the sealing ring a and the sealing ring b are used to match the ultrasonic transducer a and the ultrasonic transducer b respectively; when the ultrasonic transducer a is pressed into place relative to the mounting hole a, the sealing ring a is elastically deformed due to the joint extrusion force from the ultrasonic transducer a and the shell; and when the ultrasonic transducer b is pressed into place relative to the mounting hole b, the sealing ring b is elastically deformed due to the joint extrusion force from the ultrasonic transducer b and the shell.

6. The dual-channel ultrasonic water meter according to claim 2, characterized in that: The first fluid temperature measurement component includes a first water temperature sensor; a mounting hole c for embedding the first water temperature sensor and communicating with the liquid inlet channel is formed in the shell.

7. The dual-channel ultrasonic water meter according to claim 6, characterized in that: The first fluid temperature measurement component includes an E sealing ring; along its length direction, a plurality of annular grooves parallel to each other for the E sealing ring to be embedded are provided on the peripheral side wall of the first water temperature sensor; when the first water temperature sensor is pressed into place relative to the C mounting hole, the E sealing ring is elastically deformed due to the joint extrusion force from the first water temperature sensor and the shell.

8. The dual-channel ultrasonic water meter according to claim 7, characterized in that: It also includes a first pressure plate; the first pressure plate is used to simultaneously apply axial pressure to the a ultrasonic transducer, the b ultrasonic transducer and the first water temperature sensor, and three threading holes are formed thereon in a corresponding manner; the first pressure plate is detachably fixedly connected to the shell by means of screws.

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