Large-caliber ultrasonic water meter

Abstract

Seamless pipes are welded between two stainless steel flange pipe sections, seamless insertion rod pipes are welded to the seamless pipes, insertion rods are embedded in the seamless insertion rod pipes, every two insertion rods in one set are obliquely and oppositely arranged, and the insertion rods are fixedly connected with a box body assembly through cooperation of external screws and threaded holes. An inserting rod adapter plate is arranged in the top cavity groove of the inserting rod, and a water meter assembly is arranged on the top of the box body assembly. According to the large-diameter water meter, a set of transducer ultrasonic measurement assembly is adopted in the large-diameter pipe section to conduct large-flow measurement, the measurement precision of the large-diameter water meter is improved, meanwhile, the transducer is in a plastic insertion rod form, on one hand, installation is convenient, on the other hand, cost is reduced, and on the whole, the large-diameter water meter is reasonable in structural arrangement and convenient to use. All installation points take the overall arrangement of parts into account, the structure is compact and durable, and the service life under the large-diameter flow is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic water meters, and in particular to a large-caliber ultrasonic water meter. Background Art

[0002] With the rapid development of social economy, people's demand for water resources is growing day by day. Therefore, water meter, as an important water conservancy metering instrument, plays an important role in water resources management. However, traditional water meters have some problems, such as low accuracy, susceptibility to water quality, and difficult maintenance, especially large-caliber water meters, which are more prone to failure due to their complex internal structure.

[0003] In order to solve the above problems, ultrasonic water meters came into being. Ultrasonic water meters have the advantages of high accuracy, no influence from water quality, and simple maintenance, and are especially suitable for large-caliber water meter applications. However, existing ultrasonic water meters still have some problems in practical applications, such as limited accuracy when measuring large flow rates, complex structure installation, and high cost. Therefore, it is necessary to study a new type of ultrasonic water meter to meet the growing market demand. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above-mentioned problems existing in the existing large-caliber ultrasonic water meters, the present invention is proposed.

[0006] Therefore, the purpose of the present invention is to provide a large-caliber ultrasonic water meter to solve the problems of limited accuracy, complex structure and installation, and high cost of existing large-caliber ultrasonic water meters when measuring large flow rates.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions: a large-caliber ultrasonic water meter, comprising a group of symmetrically arranged stainless steel flange pipe sections, a seamless pipe is welded between two of the stainless steel flange pipe sections, a group of symmetrical openings are opened on the side walls of the seamless pipes, a group of measuring holes are opened on the top walls of the seamless pipes, a group of seamless plug-in pipes are welded on the openings, a plug-in rod is embedded in each of the seamless plug-in pipes, a group of the plug-in rods are arranged obliquely opposite to each other, a group of threaded holes are arranged on the top of the plug-in rods, and the plug-in rods are fixedly connected to the box body assembly by the cooperation of external screws and threaded holes. A rod adapter plate is arranged in the cavity at the top of the rod, a temperature measuring component and a pressure measuring component are arranged in the measuring hole, a cover plate is arranged on the top of the box body assembly, a water meter assembly is fixedly arranged on the cover plate, the water meter assembly includes a shell, a junction box for installing an adapter plate and a battery for power supply are arranged in the inner cavity of the shell, an electrical box for installing a circuit board is arranged on the top of the shell, a wide-screen transparent bracket is arranged on the top of the electrical box, a shell cover is arranged on the wide-screen transparent bracket, the rod adapter plate is signal-connected to the adapter plate, and the adapter plate is signal-connected to the circuit board.

[0008] As a preferred solution of the large-caliber ultrasonic water meter described in the present invention, wherein: a group of the plug rods all include a plug rod body, a group of transducer holes are arranged on the side wall of the plug rod body, a transducer assembly is fixedly arranged in a group of the transducer holes, the transducer assembly specifically includes a ceramic chip and a plastic plug, a rubber gasket is arranged between the ceramic chip and the plastic plug, one end of the plastic plug is connected to the rubber gasket, and the other end is attached to the side wall of the plug rod, the plug rod adapter plate is connected to the transducer assembly signal, the transducer assemblies are arranged obliquely opposite to each other in pairs and the distance that the ultrasonic signal obliquely penetrates the inner diameter of the seamless pipe is consistent, and the circuit board is connected to the transducer assembly signal.

[0009] As a preferred solution of the large-caliber ultrasonic water meter described in the present invention, a group of soldering fixing points are arranged on the side wall of the insertion rod and at the edge adjacent to the plastic plug.

[0010] As a preferred solution of the large-caliber ultrasonic water meter described in the present invention, the main body material of the insertion rod is plastic.

[0011] As a preferred solution of the large-caliber ultrasonic water meter described in the present invention, each of the rod bodies is fixed to the corresponding position of the inner cavity of the box body assembly through a group of threaded holes set on the top and cooperated with external screws, an elastic retaining ring is connected between the box body assembly and the rod body, a box body rubber pad is connected between the elastic retaining ring and the box body assembly, a box body gasket is inserted at the screw fixing point between the rod body and the box body assembly, and the box body gasket is fixed to the internal cavity of the box body assembly.

[0012] As a preferred solution of the large-caliber ultrasonic water meter described in the present invention, the temperature measurement component includes a temperature measuring column fixedly embedded in the measuring hole, an adapter is provided on the upper part of the temperature measuring column, and a two-point ball valve is provided on the top of the adapter.

[0013] As a preferred solution of the large-caliber ultrasonic water meter described in the present invention, the pressure measuring component includes a pressure measuring column fixedly embedded in the measuring hole, the pressure measuring column is fixedly connected to the inner cavity of the box body assembly through a pressure plate, and a pressure sensor is embedded in the upper part of the pressure measuring column.

[0014] As a preferred solution of the large-caliber ultrasonic water meter described in the present invention, wherein: a wire drawing groove, a middle hole and a limiting rib are provided in the internal cavity of the box body assembly, the pressure measuring column is passed through the middle hole, and a convex groove is provided in the cavity of the box body assembly and at the connection with the insertion rod body, and the screw groove on the top of the insertion rod body is embedded in the convex groove.

[0015] As a preferred solution of the large-diameter ultrasonic water meter described in the present invention, the stainless steel flange pipe section is provided with an opening with the same diameter as the seamless pipe, an annular depression is provided on the inner wall of the opening, the depression depth is consistent with the wall thickness of the seamless pipe, and the seamless pipe is welded to the annular depression wall.

[0016] As a preferred solution of the large-caliber ultrasonic water meter described in the present invention, wherein: the bottom of a group of the stainless steel flange pipe sections are all set to be flat in cross section; a group of the openings are all provided with a group of symmetrical protrusions, and the corresponding seamless plug-in rod tubes are provided with depressions adapted to the protrusions, and the protrusions are correspondingly embedded in the depressions and then welded and fixed; a group of sealing O-rings are provided on the top of the plug-in rod body, a cover plate sealing ring is provided at the connection between the cover plate and the box body assembly, a shell screw gasket is inserted between the water meter assembly and the cover plate, the junction box is fixed to the shell screw gasket by screws, and a screw gasket is inserted at the fixing point, and a pressure sealing sleeve is installed between the pressure plate and the pressure measuring column; a decorative sheet and a decorative flange gasket are inserted on the upper part of the cover plate; a plug-in rod cover is welded to the bottom of each seamless plug-in rod tube.

[0017] Beneficial effects of the present invention: The present invention provides a large-caliber ultrasonic water meter, which uses a group of transducer ultrasonic measurement components in a large-caliber pipe section to measure large flow rates, thereby improving the measurement accuracy of the large-caliber water meter. At the same time, the transducer of the present invention adopts a plastic plug-in rod form, which is easy to install on the one hand and reduces costs on the other hand. Overall, the present invention has a reasonable structural arrangement, and each installation point takes into account the overall arrangement of the components. The structure is compact and durable, ensuring the service life under large-caliber flow rates, and solving the problems of limited accuracy, complex structural installation and high cost of existing large-caliber ultrasonic water meters when measuring large flow rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them: Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the explosion of the overall structure of the present invention.

[0020] Figure 3 It is a schematic diagram of the structure of the connection between the stainless steel flange pipe section and the seamless pipe of the present invention.

[0021] Figure 4 It is a schematic diagram of the structure of the connection between the seamless rod-inserting tube and the seamless tube of the present invention.

[0022] Figure 5 It is a schematic diagram of the overall structure of the plug rod of the present invention.

[0023] Figure 6 It is a schematic diagram of the explosion structure of the plunger of the present invention.

[0024] Figure 7 It is a schematic diagram of the overall structure of the box assembly of the present invention.

[0025] Figure 8 It is another overall structural schematic diagram of the box assembly of the present invention.

[0026] Fig. 9 It is a schematic diagram of the explosion structure of the water meter assembly of the present invention. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0030] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included. Example

[0031] The existing ultrasonic water meters still have some problems in practical applications, such as limited accuracy in large flow measurement, complex structure installation and high cost. Therefore, it is necessary to study a new type of ultrasonic water meter to meet the growing market demand.

[0032] Therefore, please refer to Figure 1 , Figure 2 , Figure 7 , Figure 8 and Fig. 9 The present invention provides a large-caliber ultrasonic water meter, comprising a group of symmetrically arranged stainless steel flange pipe sections 1, a seamless pipe 2 is welded between the two stainless steel flange pipe sections 1, a group of symmetrical openings are opened on the side wall of the seamless pipe 2, a group of measuring holes are opened on the top wall of the seamless pipe 2, a group of openings are welded with seamless plug-in pipes 3, each seamless plug-in pipe 3 is embedded with a plug-in rod 4, a group of plug-in rods 4 are arranged obliquely opposite to each other, a group of threaded holes are arranged on the top of the plug-in rod 4, the plug-in rod 4 is fixedly connected to the box body assembly 5 by the cooperation of the external screws and the threaded holes, and a plug-in rod adapter plate 6 is arranged in the cavity groove at the top of the plug-in rod 4, A temperature measuring component 7 and a pressure measuring component 8 are arranged in the measuring hole, a cover plate 9 is arranged on the top of the box body component 5, a water meter component 10 is fixedly arranged on the cover plate 9, the water meter component 10 comprises a shell 10a, a junction box 10b for installing an adapter board and a battery 10c for power supply are arranged in the inner cavity of the shell 10a, an electrical box 10d for installing a circuit board is arranged on the top of the shell 10a, a wide-screen transparent bracket 10e is arranged on the top of the electrical box 10d, a shell cover 10f is arranged on the wide-screen transparent bracket 10e, the plug-in adapter plate 6 is connected to the adapter plate signal, and the adapter plate is connected to the circuit board signal.

[0033] It should be noted that in the present invention, there are 4 openings, and the seamless plug-in tube 3 is correspondingly provided with 4, and the plug-in rods 4 embedded therein are synchronously provided, and the plug-in rods 4 are arranged opposite to each other in an oblique direction in pairs, and the flow rate is measured by the emission and return of ultrasonic signals. During the ultrasonic signal measurement process, a total of 4 groups of measurement information are generated, specifically: a total of 4 ultrasonic transducer groups are arranged at the first level; that is, the lower left transducer transmits ultrasonic signals, and the upper right transducer receives ultrasonic signals to generate a group of flow measurement information; the upper left transducer transmits ultrasonic signals, and the lower right transducer receives ultrasonic signals to generate a group of flow measurement information; a total of 4 ultrasonic transducer groups are arranged at the second level; that is, the lower left transducer transmits ultrasonic signals, and the upper right transducer receives ultrasonic signals to generate a group of flow measurement information; the upper left transducer transmits ultrasonic signals, and the lower right transducer receives ultrasonic signals to generate a group of flow measurement information; a total of 4 groups of flow measurement information are generated correspondingly at the two levels.

[0034] Among them, see Figure 5 and Figure 6 A group of plug rods 4 include a plug rod body 41, a group of transducer holes 42 are arranged on the side wall of the plug rod body 41, a transducer assembly 43 is fixedly arranged in a group of transducer holes 42, the transducer assembly 43 specifically includes a ceramic chip 43a and a plastic plug 43c, a rubber gasket 43b is arranged between the ceramic chip 43a and the plastic plug 43c, one end of the plastic plug 43c is connected to the rubber gasket 43b, and the other end is attached to the side wall of the plug rod 4, the plug rod adapter plate 6 is connected to the transducer assembly 43 signal, the transducer assemblies 43 are arranged obliquely opposite to each other in pairs, and the distance that the ultrasonic signal obliquely penetrates the inner diameter of the seamless pipe 2 is consistent, and the circuit board is connected to the transducer assembly 43 signal.

[0035] It should be noted that the rod transducer measurement assembly of the present invention uses ultrasonic flow measurement, which is a conventional means of flow measurement. The use of its components will not be described in detail here.

[0036] Among them, a group of soldering fixing points 44 are arranged on the side wall of the insertion rod 4 and adjacent to the edge of the plastic plug 43c. After the plastic plug 43c is assembled, the raised points can be ironed flat to fix the plastic plug 43c.

[0037] Among them, the material of the plug body 41 is plastic, which saves processing steps and reduces costs compared to copper.

[0038] Among them, each insertion rod body 41 is fixed to the corresponding position of the inner cavity of the box body assembly 5 through a group of threaded holes set on the top and cooperated with external screws. An elastic retaining ring 510 is connected between the box body assembly 5 and the insertion rod body 41, and a box body rubber pad 520 is connected between the elastic retaining ring 510 and the box body assembly 5. A box body gasket 530 is inserted at the screw fixing point between the insertion rod body 41 and the box body assembly 5, and the box body gasket 530 is fixed to the internal cavity of the box body assembly 5.

[0039] Among them, see Figure 7 and Figure 8 The corresponding position of the inner cavity of the box body assembly 5 where the plug rod body 41 is installed adopts a waist groove design, which directly limits the rotation of the plug rod body 41. The screws on the elastic retaining ring 510 and the box body gasket 530 fix the pipe section, the plug rod body 41, and the box body assembly 5 together.

[0040] Among them, see Figure 2 The temperature measuring assembly 7 includes a temperature measuring column 71 fixedly embedded in a measuring hole, an adapter 72 is provided on the upper part of the temperature measuring column 71, and a two-point ball valve 73 is provided on the top of the adapter 72, wherein the temperature measuring column 71 is welded in the current measuring hole.

[0041] Among them, see Figure 2 The pressure measuring assembly 8 includes a pressure measuring column 81 fixedly embedded in a measuring hole. The pressure measuring column 81 is fixedly connected to the inner cavity of the box body assembly 5 through a pressure plate 82. A pressure sensor 83 is embedded on the upper part of the pressure measuring column 81, wherein the pressure measuring column 81 is welded in the current measuring hole.

[0042] Among them, see Figure 7 and Figure 8 The inner cavity of the box assembly 5 is provided with a wire-straightening groove 51, a middle hole 52 and a limiting rib 53. The pressure-measuring column 81 is inserted into the middle hole 52. A convex groove is provided in the cavity of the box assembly 5 and at the connection with the plug body 41. The screw groove at the top of the plug body 41 is embedded in the convex groove. The wire-straightening groove 51 can prevent the screws unscrewed from above from pressing the wires. The limiting rib 53 is provided. When the box gasket 53 is put in, the screw holes are aligned, and there is no need to align the holes manually.

[0043] Among them, see Figure 3 The stainless steel flange pipe section 1 is provided with an opening of the same diameter as the seamless pipe 2, and an annular depression is provided on the inner wall of the opening, and the depth of the depression is consistent with the wall thickness of the seamless pipe 2. The seamless pipe 2 is welded to the annular depression wall. This design enables the seamless pipe 2 to completely match the thickness of the stainless steel flange pipe section 1, and no fault will appear inside the pipe section after welding, which can ensure a smooth connection between the stainless steel flange pipe section 1 and the seamless pipe 2.

[0044] Among them, the bottom of a group of stainless steel flange pipe sections 1 are all set to be flat in cross section, which is convenient for placing the pipe sections on the ground.

[0045] Among them, see Figure 4 A group of symmetrical protrusions are arranged on each of the openings, and corresponding depressions adapted to the protrusions are arranged on the seamless rod inserting tube 3. The protrusions are correspondingly embedded in the depressions and then welded and fixed, so that the seamless rod inserting tube 3 can be completely welded to the seamless tube 2, thereby enhancing the degree of fixing.

[0046] Among them, a group of sealing O-rings are arranged on the top of the plug body 41, a cover sealing ring is arranged at the connection between the cover plate 9 and the box body assembly 5, a shell screw gasket is inserted between the water meter assembly 10 and the cover plate 9, the junction box 10b is fixed to the shell screw gasket by screws, and a screw gasket is inserted at the fixing point, and a pressure sealing sleeve is installed between the pressure plate 82 and the pressure measuring column 81.

[0047] Wherein, a decorative sheet and a decorative flange gasket are inserted on the upper part of the cover plate 9.

[0048] A rod insertion tube cover 31 is welded at the bottom of each seamless rod insertion tube 3 to cooperate with the seamless rod insertion tube 3 to realize a semi-enclosed space to accommodate the insertion of the rod 4.

[0049] The present invention provides a large-caliber ultrasonic water meter, which uses a group of transducer ultrasonic measurement components in a large-caliber pipe section to measure a large flow rate, thereby improving the measurement accuracy of the large-caliber water meter. At the same time, the transducer of the present invention adopts a plastic plug-in rod form, which is convenient for installation on the one hand and reduces the cost on the other hand. From the overall point of view, the present invention has a reasonable structural arrangement, each installation point takes into account the overall arrangement of the components, and the structure is compact and durable, which ensures the service life under large-caliber flow rates, and solves the problems of limited accuracy, complex structural installation and high cost of existing large-caliber ultrasonic water meters when measuring large flows.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A large-caliber ultrasonic water meter, characterized in that: The invention comprises a group of symmetrically arranged stainless steel flange pipe sections (1), a seamless pipe (2) being welded between two of the stainless steel flange pipe sections (1), a group of symmetrical openings being opened on the side wall of the seamless pipe (2), a group of measuring holes being opened on the top wall of the seamless pipe (2), a seamless plug-in pipe (3) being welded on each of the openings, a plug-in pipe (4) being embedded in each of the seamless plug-in pipes (3), a group of plug-in rods (4) being arranged obliquely opposite to each other in pairs, a group of threaded holes being arranged on the top of the plug-in rods (4), the plug-in rods (4) being fixedly connected to the box body assembly (5) by the cooperation of external screws and the threaded holes, a plug-in rod adapter plate (6) being arranged in the cavity groove at the top of the plug-in rod (4), and a temperature measuring assembly (5) being arranged in the measuring hole. 7) and a pressure measurement component (8), the top of the box body component (5) is provided with a cover plate (9), a water meter component (10) is fixedly provided on the cover plate (9), the water meter component (10) comprises a shell (10a), a junction box (10b) for installing an adapter plate and a battery (10c) for power supply are provided in the inner cavity of the shell (10a), an electrical box (10d) for installing a circuit board is provided on the top of the shell (10a), a wide-screen transparent bracket (10e) is provided on the top of the electrical box (10d), a shell cover (10f) is provided on the wide-screen transparent bracket (10e), the plug-in rod adapter plate (6) is signal-connected to the adapter plate, and the adapter plate is signal-connected to the circuit board.

2. The large-caliber ultrasonic water meter according to claim 1, characterized in that: A group of the plug rods (4) all include a plug rod body (41), a group of transducer holes (42) are provided on the side wall of the plug rod body (41), a transducer assembly (43) is fixedly provided in each of the transducer holes (42), the transducer assembly (43) specifically includes a ceramic chip (43a) and a plastic plug (43c), a rubber gasket (43b) is provided between the ceramic chip (43a) and the plastic plug (43c), one end of the plastic plug (43c) is connected to the rubber gasket (43b), and the other end is attached to the side wall of the plug rod (4), the plug rod adapter plate (6) is signal-connected to the transducer assembly (43), the transducer assemblies (43) are arranged obliquely opposite to each other in pairs, and the distance that the ultrasonic signal obliquely penetrates the inner diameter of the seamless pipe (2) is consistent, and the circuit board is signal-connected to the transducer assembly (43).

3. The large-caliber ultrasonic water meter according to claim 2, characterized in that: A group of soldering fixing points (44) are arranged on the side wall of the insertion rod (4) and at the edge adjacent to the plastic plug (43c).

4. The large-caliber ultrasonic water meter according to claim 3, characterized in that: The material of the insertion rod body (41) is plastic.

5. The large-caliber ultrasonic water meter according to claim 4, characterized in that: Each of the insertion rod bodies (41) is fixed to a corresponding position of the inner cavity of the box body assembly (5) through a group of threaded holes arranged at the top and in cooperation with external screws; an elastic retaining ring (510) is connected between the box body assembly (5) and the insertion rod body (41); a box body rubber pad (520) is connected between the elastic retaining ring (510) and the box body assembly (5); a box body gasket (530) is inserted at the screw fixing point between the insertion rod body (41) and the box body assembly (5); and the box body gasket (530) is fixed to the inner cavity of the box body assembly (5).

6. The large-caliber ultrasonic water meter according to claim 5, characterized in that: The temperature measurement assembly (7) comprises a temperature measuring column (71) fixedly embedded in the measurement hole, an adapter (72) being provided on the upper part of the temperature measuring column (71), and a two-division ball valve (73) being provided on the top of the adapter (72).

7. The large-caliber ultrasonic water meter according to claim 6, characterized in that: The pressure measuring assembly (8) comprises a pressure measuring column (81) fixedly embedded in the measuring hole, the pressure measuring column (81) being fixedly connected to the inner cavity of the box assembly (5) via a pressure plate (82), and a pressure sensor (83) being embedded in the upper part of the pressure measuring column (81).

8. The large-caliber ultrasonic water meter according to claim 7, characterized in that: The inner cavity of the box body assembly (5) is provided with a wire drawing groove (51), a middle hole (52) and a limiting rib (53), the pressure measuring column (81) is inserted into the middle hole (52), and a convex groove is provided in the cavity of the box body assembly (5) and at the connection with the insertion rod body (41), and the top screw groove of the insertion rod body (41) is embedded in the convex groove.

9. The large-caliber ultrasonic water meter according to claim 8, characterized in that: The stainless steel flange pipe section (1) is provided with an opening having the same diameter as the seamless pipe (2), an annular depression is provided on the inner wall of the opening, the depth of the depression is consistent with the wall thickness of the seamless pipe (2), and the seamless pipe (2) is welded to the annular depression wall.

10. The large-caliber ultrasonic water meter according to claim 9, characterized in that: The bottom of a group of the stainless steel flange pipe sections (1) are all arranged to be flat in cross section; a group of the openings are all arranged with a group of symmetrical protrusions, and the corresponding seamless plug-in rod tubes (3) are arranged with depressions adapted to the protrusions, and the protrusions are correspondingly embedded in the depressions and then welded and fixed; a group of sealing O-rings are arranged on the top of the plug-in rod body (41), a cover plate sealing ring is arranged at the connection between the cover plate (9) and the box body assembly (5), a shell screw gasket is inserted between the water meter assembly (10) and the cover plate (9), the junction box (10b) is fixedly connected to the shell screw gasket by screws, and a screw gasket is inserted at the fixing point, and a pressure sealing sleeve is installed between the pressure plate (82) and the pressure measuring column (81); a decorative sheet and a decorative flange gasket are inserted on the upper part of the cover plate (9); and a plug-in rod tube cover (31) is welded to the bottom of each of the seamless plug-in rod tubes (3).

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