Water meter pipe section and water meter device

Abstract

The utility model relates to the technical field of fluid detection, and discloses a water meter pipe section and a water meter device.The water meter pipe section comprises a pipe section body and a water meter, the shell is installed on the outer side of the pipe section body, the shell is provided with an installation hole, the installation hole communicates with the inner cavity, and the inner wall of the installation hole is provided with a first limiting mechanism; the transducer assembly is mounted in the mounting hole, the transducer assembly is provided with a second limiting mechanism, and the second limiting mechanism is used for being matched with the first limiting mechanism in a clamped mode so as to limit relative movement between the transducer assembly and the shell in the extending direction of the mounting hole. According to the water meter pipe section, the transducer assembly can be assembled only through clamping connection of the second limiting mechanism and the first limiting mechanism, the situation that the transducer assembly is installed at the too deep or too shallow position in the installation hole is avoided, and therefore accurate positioning of the transducer assembly during installation is achieved; and the phenomenon that the transducer is not installed in place or the transducer is damaged due to extrusion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid detection, and particularly relates to a water meter pipe section and a water meter device. Background Technique

[0002] A water meter is a device for detecting and recording water flow. An ultrasonic water meter is a type of water meter. Its detection method is to utilize the time difference principle of ultrasonic waves. By detecting the time difference generated by the change in the speed of the ultrasonic beam when propagating in the water in the forward and reverse directions, and then analyzing and processing these time differences to obtain the water flow velocity. Finally, the water flow is calculated based on the water flow velocity and the cross-sectional area of the water pipe through which the water flows. A transducer is a key component of an ultrasonic water meter and is used to convert non-electric energy into electric energy.

[0003] Currently, most transducers need to be manually positioned during installation. If the installation force is small, there is a possibility that the transducer is not installed in place. If the installation force is large, the transducer may be damaged due to excessive extrusion.

[0004] Therefore, how to accurately install the transducer on the ultrasonic water meter to prevent the transducer from not being installed in place or being damaged has become an urgent technical problem in this field. Summary of the Utility Model

[0005] The purpose of the utility model is to at least solve the technical problem of how to accurately install the transducer on the ultrasonic water meter to prevent the transducer from not being installed in place or being damaged. This purpose is achieved through the following technical solutions:

[0006] In a first aspect, the utility model provides a water meter pipe section, which includes: a pipe section body having an inner cavity for the water flow path; a housing installed on the outer side of the pipe section body, the housing having an installation hole that communicates with the inner cavity, and the inner wall of the installation hole having a first limiting mechanism; and a transducer assembly installed in the installation hole, the transducer assembly having a second limiting mechanism, and the second limiting mechanism being used for snap-fitting with the first limiting mechanism to limit the relative movement between the transducer assembly and the housing in the extending direction of the installation hole.

[0007] When assembling this water meter pipe section, the transducer assembly is inserted into the installation hole, and the second limiting mechanism is engaged with the first limiting mechanism to fix the transducer assembly relative to the housing. Since the relative movement between the transducer assembly and the housing in the extending direction of the installation hole is restricted, that is, when assembling the transducer assembly, the position of the transducer assembly in the extending direction of the installation hole (i.e., the depth at which the transducer assembly extends into the installation hole) is fixed, avoiding the problem of installing the transducer assembly too deep or too shallow in the installation hole, thereby achieving accurate positioning of the transducer assembly during installation and avoiding technical problems such as the transducer not being installed in place or being damaged due to extrusion. In addition, since the assembly of the transducer assembly can be achieved only by the engagement of the second limiting mechanism and the first limiting mechanism, and the assembly position of the transducer assembly in the extending direction of the installation hole is fixed, this operation is simple and convenient, and even unskilled workers can quickly and accurately install the transducer assembly, which improves the assembly efficiency of the transducer assembly to a certain extent.

[0008] In some embodiments of the present invention, the transducer assembly includes: a transducer body; and a limiting member, one end of the limiting member abuts against the transducer body; an annular groove is provided on the side wall of the limiting member, and the annular groove constitutes the second limiting mechanism, and a protrusion is provided on the inner wall of the installation hole, and the protrusion constitutes the first limiting mechanism; alternatively, a protrusion is provided on the side wall of the limiting member, and the protrusion constitutes the second limiting mechanism, and an annular groove is provided on the inner wall of the installation hole, and the annular groove constitutes the first limiting mechanism; the protrusion and the annular groove are engaged with each other to limit the relative movement between the limiting member and the housing in the extending direction of the installation hole.

[0009] In some embodiments of the present invention, the transducer assembly further includes a sealing ring. The transducer body includes a first part and a second part coaxially arranged with the first part. The diameter of the first part is larger than that of the second part. The sealing ring is sleeved on the outer wall of the second part, and the sealing ring is used to seal the gap between the outer wall of the second part and the inner wall of the installation hole.

[0010] In some embodiments of the present invention, the limiting member is provided with a wire passing hole for passing the lead of the transducer body.

[0011] In some embodiments of the present invention, the limiting member is provided with a through hole, and a sealing plug for blocking the through hole is provided at the through hole, and a wire passing hole is provided on the sealing plug. In some embodiments of the present invention, the housing includes a meter head connecting seat, and a wire passing groove for passing the lead is provided inside the housing. The wire passing groove is communicated with the installation hole, and the meter head connecting seat is provided with a wire passing hole, and the wire passing hole is communicated with the wire passing groove.

[0012] In some embodiments of the present invention, both the installation hole and the transducer assembly are multiple, and the multiple installation holes are arranged in one-to-one correspondence with the multiple transducer assemblies.

[0013] In some embodiments of the present utility model, the water meter pipe section further includes a sealing assembly. The sealing assembly includes: a sealing cover for plugging the installation hole; a connecting member through which the sealing cover is connected to the housing; and a sealing gasket. Along the extending direction of the installation hole, the sealing gasket is located between the sealing cover and the housing, and the sealing gasket is used to plug the gap between the sealing cover and the housing.

[0014] In some embodiments of the present utility model, the connecting member is a screw. The sealing cover is provided with a first threaded hole for mating with the screw, and the housing is provided with a second threaded hole for mating with the screw; the sealing assembly further includes a plugging member for plugging the first threaded hole.

[0015] Second, the present utility model provides a water meter device. The water meter device includes a meter head and any one of the above water meter pipe sections, and the meter head is installed on the water meter pipe section.

[0016] The above description is only an overview of the technical solution of this application. In order to be able to understand the technical means of this application more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of this application more obvious and understandable, the following specifically gives the specific implementation manners of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0018] Figure 1 is a schematic structural diagram of the water meter pipe section provided by the embodiment of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the water meter pipe section provided by the embodiment of the present utility model from another angle;

[0020] Figure 3 is a schematic structural diagram of the housing in the water meter pipe section provided by the embodiment of the present utility model;

[0021] Figure 4 is a schematic structural diagram of a part of the water meter pipe section provided by the embodiment of the present utility model after removing the housing;

[0022] Figure 5 is a schematic structural diagram of the transducer assembly in the water meter pipe section provided by the embodiment of the present utility model;

[0023] Figure 6 is a schematic structural diagram of the transducer assembly in the water meter pipe section provided by the embodiment of the present utility model from another angle;

[0024] Figure 7 The structure schematic diagram after removing the sealing plug; Figure 6

[0025] Figure 8 The structure schematic diagram after removing the lead wire. Figure 6

[0026] The reference numerals are as follows:

[0027] 100, water meter pipe section;

[0028] 1, housing; 11, mounting hole; 111, first limiting mechanism; 12, meter head connecting seat; 121, wire passing hole;

[0029] 2, transducer assembly; 21, transducer body; 211, first part; 212, second part; 213, lead wire; 22, sealing ring; 23, limiting member; 231, second limiting mechanism; 232, through hole; 233, sealing plug; 2331, wire passing hole;

[0030] 3, sealing assembly; 31, sealing cover; 32, connecting member; 33, sealing gasket; 34, plugging member;

[0031] 4, pipe section body; 41, inner cavity. Detailed implementation manners

[0032] Hereinafter, the exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be completely conveyed to those skilled in the art.

[0033] It should be understood that the terms used herein are only for the purpose of describing specific exemplary embodiments and are not intended to be limiting. Unless otherwise clearly specified in the context, the singular forms "a", "an" and "the" as used herein may also include the plural forms. The terms "include", "comprise", "contain" and "have" are inclusive and thus specify the presence of the stated features, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0034] ​​Although terms such as first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms do not imply an order or sequence when used in the text. Therefore, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0035] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figure to another element or feature, such as "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientations depicted in the figure. For example, if the device in the figure is flipped, an element described as "below" or "beneath" another element or feature will then be oriented as "above" or "over" the other element or feature. Thus, the exemplary term "below" can include both upward and downward orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used in the text are accordingly interpreted.

[0036] A transducer is a component in a water meter used to convert non-electric energy into electric energy. During assembly, the transducer needs to be inserted into the installation hole of the water meter pipe section for fixation.

[0037] However, in the prior art, the transducer and the housing are usually connected by threads. During assembly, if the installation force is small, that is, the screwing depth is too shallow, there is a possibility that the transducer is not installed in place (such as loose or the sealing performance is affected); if the installation force is large, that is, the screwing depth is too deep, the transducer may be damaged due to extrusion.

[0038] Based on the above considerations, for the accuracy of transducer installation, the present application designs a water meter pipe section, which includes a housing and a transducer assembly. The second limiting mechanism of the transducer assembly cooperates with the first limiting mechanism of the housing to achieve precise positioning of the transducer assembly during assembly, thereby preventing the phenomenon of the transducer not being installed in place or the transducer being damaged.

[0039] Figure 1 Schematic diagram of the structure of the water meter pipe section provided by the embodiment of the present utility model; Figure 2Schematic diagram of the water meter pipe section provided by the embodiment of the present utility model from another angle; Figure 3 Schematic diagram of the structure of the housing in the water meter pipe section provided by the embodiment of the present utility model; Figure 4 Partial schematic diagram of the water meter pipe section provided by the embodiment of the present utility model after removing the housing; Figure 5 Schematic diagram of the structure of the transducer assembly in the water meter pipe section provided by the embodiment of the present utility model; As Figures 1-5 shown, the embodiment of the present utility model provides a water meter pipe section 100. The water meter pipe section 100 includes: a pipe section body 4 having an inner cavity 41 for water flow; a housing 1 installed on the outer side of the pipe section body 4. The housing 1 has an installation hole 11, and the installation hole 11 communicates with the inner cavity 41. The inner wall of the installation hole 11 has a first limiting mechanism 111; and a transducer assembly 2 installed in the installation hole 11. The transducer assembly 2 has a second limiting mechanism 231, and the second limiting mechanism 231 is used to be engaged with the first limiting mechanism 111 to limit the relative movement between the transducer assembly 2 and the housing 1 in the extending direction of the installation hole 11.

[0040] In this embodiment, when assembling this water meter pipe section 100, the transducer assembly 2 is inserted into the installation hole 11, and the second limiting mechanism 231 is engaged with the first limiting mechanism 111 to fix the transducer assembly 2 relative to the housing 1. Since the relative movement between the transducer assembly 2 and the housing 1 in the extending direction of the installation hole 11 is restricted, that is, when assembling the transducer assembly 2, the position of the transducer assembly 2 in the extending direction of the installation hole 11 (i.e., the depth of the transducer assembly 2 inserted into the installation hole 11) is fixed.

[0041] Therefore, this setting method avoids the situation where the transducer assembly 2 is installed too deep or too shallow in the installation hole 11, thereby realizing the accurate positioning of the transducer assembly 2 during installation and avoiding technical problems such as the transducer not being installed in place or the transducer being damaged due to extrusion. In addition, since the assembly of the transducer assembly 2 can be achieved only by the engagement of the second limiting mechanism 231 and the first limiting mechanism 111, and the assembly position of the transducer assembly 2 in the extending direction of the installation hole 11 is fixed, this operation is simple and convenient. Even workers without proficiency can quickly and accurately install the transducer assembly 2, which improves the assembly efficiency of the transducer assembly 2 to a certain extent.

[0042] Reference Figures 3-5, specifically, as an optional embodiment of the present utility model, the transducer assembly 2 includes: a transducer body 21; and a limiting member 23, one end of the limiting member 23 abuts against the transducer body 21; a circular groove is provided on the side wall of the limiting member 23, and the circular groove constitutes a second limiting mechanism 231, and a protrusion is provided on the inner wall of the mounting hole 11, and the protrusion constitutes a first limiting mechanism 111; alternatively, a protrusion is provided on the side wall of the limiting member 23, and the protrusion constitutes a second limiting mechanism 231, and a circular groove is provided on the inner wall of the mounting hole 11, and the circular groove constitutes a first limiting mechanism 111; the protrusion and the circular groove are engaged with each other to limit the relative movement between the limiting member 23 and the housing 1 in the extending direction of the mounting hole 11.

[0043] In this embodiment, taking the case where a circular groove is provided on the side wall of the limiting member 23 and a protrusion is provided on the inner wall of the mounting hole 11 as an example for illustration: When assembling this water meter pipe section 100, the sealing ring 22, the transducer body 21 and the limiting member 23 are sequentially inserted into the mounting hole 11, and the protrusion on the inner wall of the mounting hole 11 is engaged with the circular groove on the side wall of the limiting member 23 to realize the positioning of the transducer body 21. It is easy to understand that if the protrusion is to be engaged with the circular groove, the position of the transducer body 21 in the extending direction of the mounting hole 11 is unique, that is, the depth of the transducer body 21 inserted into the mounting hole 11 is certain.

[0044] Therefore, this setting method avoids the situation that the transducer body 21 is installed too deep or too shallow in the mounting hole 11, thereby realizing the accurate positioning of the transducer body 21 during installation, and avoiding the technical problems of the transducer not being installed in place or the transducer being damaged due to extrusion. In addition, since only the protrusion needs to be engaged with the circular groove to realize the assembly of the transducer body 21, and the assembly position of the transducer body in the extending direction of the mounting hole 11 is certain, this operation is simple and convenient, and even unskilled workers can quickly and accurately install the transducer assembly 2, which improves the assembly efficiency of the transducer assembly 2 to a certain extent.

[0045] It is easy to understand that when a protrusion is provided on the side wall of the limiting member 23 and a circular groove is provided on the inner wall of the mounting hole 11, the installation method of the transducer body 21 is similar to the above method, and it is only necessary to engage the protrusion with the circular groove, which will not be elaborated here.

[0046] Continue to refer to Figures 3-5 , further, as an optional embodiment of the present utility model, the transducer assembly 2 further includes a sealing ring 22, the transducer body 21 includes a first part 211 and a second part 212 coaxially arranged with the first part 211, the diameter of the first part 211 is larger than the diameter of the second part 212, the sealing ring 22 is sleeved on the outer wall of the second part 212, and the sealing ring 22 is used to seal the gap between the outer wall of the second part 212 and the inner wall of the mounting hole 11.

[0047] In this embodiment, the surface of the first part 211 in contact with the second part 212 is used to support the sealing ring 22, so as to realize that when the transducer assembly 2 is installed, the sealing ring 22 is compressed to expand along the circumferential direction of the transducer body 21, thereby improving the sealing effect of the gap between the outer wall of the second part 212 and the inner wall of the mounting hole 11.

[0048] Similarly, since this transducer assembly 2 can avoid installing the transducer body 21 too deep or too shallow in the mounting hole 11 to achieve accurate positioning of the transducer body 21 during installation, and avoid technical problems such as the transducer not being installed in place or the transducer being damaged due to extrusion; therefore, it can also avoid the phenomenon that the sealing ring 22 is damaged due to excessive extrusion, so that the compression ratio of the sealing ring 22 is kept within a controllable range, ensuring the service life and sealing effect of the sealing ring 22.

[0049] Figure 6 It is a schematic structural diagram of the transducer assembly in the water meter pipe section provided by the embodiment of the present invention from another angle. Figure 7 For Figure 6 It is a schematic structural diagram after removing the sealing plug. Figure 8 For Figure 6 It is a schematic structural diagram after removing the lead wires; referring to Figures 6-8 , as an optional embodiment of the present invention, it is characterized in that the limiting member 23 is provided with a wire passing hole 2331 for passing the lead wire 213 of the transducer body 21.

[0050] Since the transducer body 21 ultimately needs to be electrically connected to the meter head, in this embodiment, a wire passing hole 2331 is provided on the limiting member 23 to lead out the lead wire 213 of the transducer body 21 from the wire passing hole 2331, so as to realize the subsequent connection between the lead wire 213 and the meter head.

[0051] Specifically, a through hole 232 can be provided on the limiting member 23. For example, the limiting member 23 can be a nut with a through hole 232 in the middle; and a sealing plug 233 is provided at the through hole 232 to block the through hole 232. In addition, a wire passing hole 2331 for passing the lead wire 213 is opened on the sealing plug 233; it is easy to understand that the setting of the sealing plug 233 can improve the relative sealing between the transducer assembly 2 and the mounting hole 11.

[0052] Such as Figures 1-3 shown, specifically, as an optional embodiment of the present invention, the housing 1 includes a meter head connection seat 12. A wire running groove (not shown in the figure) for passing the lead wire 213 is provided inside the housing 1, and the wire running groove communicates with the mounting hole 11. The meter head connection seat 12 is provided with a wire passing hole 121, and the wire passing hole 121 communicates with the wire running groove.

[0053] In this embodiment, with reference to Figure 4 After the lead wire 213 of the transducer body 21 is led out from the wire passing hole 2331 of the limiting member 23, it extends into the wire routing groove of the housing 1, and then passes through the wire passing hole 121 of the meter head connecting seat 12 and is finally connected to the meter head.

[0054] In this setting method, the lead wire 213 of the transducer body 21 is routed inside the housing 1, which plays a role in protecting the lead wire 213 and facilitates the connection of the final lead wire 213 to the meter head.

[0055] As an optional embodiment of the present utility model, both the mounting holes 11 and the transducer assemblies 2 are multiple, and the multiple mounting holes 11 are arranged in one-to-one correspondence with the multiple transducer assemblies 2.

[0056] In this embodiment, it is easy to understand that when there are multiple transducer assemblies 2, the number of wire routing grooves inside the housing 1 and the number of wire passing holes 121 of the meter head connecting seat 12 should be appropriately increased. For example Figures 1-4 As can be seen, a total of four wire routing grooves and four wire passing holes 121 are provided, that is, two mounting holes 11 are taken as a group, and a group of mounting holes 11 corresponds to one wire routing groove and one wire passing hole 121. It should be noted that this embodiment is only for illustration, and the specific corresponding relationship between the mounting holes 11, the wire routing grooves, and the wire passing holes 121 can be determined according to the actual working conditions, as long as the final lead wire 213 can be connected to the meter head, and no specific restrictions are made.

[0057] As Figure 1 , Figure 2 and Figure 4 shown, as an optional embodiment of the present utility model, the water meter pipe section 100 further includes a sealing assembly 3, and the sealing assembly 3 includes: a sealing cover 31 for plugging the mounting hole 11; a connecting member 32, the sealing cover 31 is connected to the housing 1 through the connecting member 32; and a sealing gasket 33, along the extending direction of the mounting hole 11, the sealing gasket 33 is located between the sealing cover 31 and the housing 1, and the sealing gasket 33 is used to plug the gap between the sealing cover 31 and the housing 1.

[0058] Among them, it is easy to understand that when there are multiple transducer assemblies 2, one sealing cover 31 can correspond to multiple mounting holes 11. With reference to Figure 1 , Figure 2 and Figure 4 , every two mounting holes 11 (that is, the mounting positions of two transducer assemblies 2) correspond to one sealing cover 31. In this way, the assembly efficiency of the sealing cover can be improved. Similarly, it should be noted that this embodiment is only for illustration, and the specific corresponding relationship between the mounting holes 11 and the sealing cover 31 can be determined according to the actual working conditions, as long as all the final sealing covers 31 can seal all the mounting holes 11 connected to the meter head, and no specific restrictions are made.

[0059] In this embodiment, after the transducer assembly 2 is assembled, first place the gasket 33 on one side of the sealing cover 31. For example, the gasket 33 can be bonded to this side. Then, press the side of the sealing cover 31 with the gasket 33 against the housing 1 so that the sealing cover 31 seals the corresponding mounting hole 11. Finally, connect the sealing cover 31 to the housing 1 through the connecting member 32, and the assembly of the sealing cover 31 can be achieved.

[0060] This setting method can ensure the sealing between the mounting hole 11 and the outside world and prevent external liquid from entering the mounting hole 11.

[0061] Specifically, referring to Figure 4 , as an optional embodiment of the present utility model, the connecting member 32 is a screw. The sealing cover 31 is provided with a first threaded hole that mates with the screw, and the housing 1 is provided with a second threaded hole that mates with the screw. The sealing assembly 3 further includes a plugging member 34 for plugging the first threaded hole.

[0062] Among them, it is easy to understand that each sealing cover 31 can cooperate with multiple screws. For example, Figure 4 four screws are assembled on one sealing cover 31. The multiple screws can be evenly distributed on the corresponding sealing cover 31 so that the sealing cover 31 is evenly stressed, further improving the sealing effect of the sealing cover 31 on the mounting hole 11.

[0063] In this embodiment, after the side of the sealing cover 31 with the gasket 33 is pressed against the housing 1 and the sealing cover 31 seals the corresponding mounting hole 11, the screw can be passed through the corresponding first threaded hole and second threaded hole in sequence, and then the screw is tightened to achieve the assembly of the sealing cover 31. Finally, the first threaded hole is plugged with the plugging member 34 to improve the sealing of the first threaded hole and prevent external liquid from entering the mounting hole 11 through the first threaded hole, more effectively achieving the sealing of the mounting hole 11.

[0064] The embodiment of the present utility model also provides a water meter device, which includes a meter head and any one of the above-mentioned water meter pipe sections 100, and the meter head is installed on the water meter pipe section 100.

[0065] In this embodiment, the meter head can be installed on the meter head connection seat 12 of the housing 1. After the lead 213 of the transducer body 21 is led out through the wire passing hole 121, it is connected to the meter head.

[0066] This water meter device has the same beneficial effects as any one of the above-mentioned water meter pipe sections 100, that is, it can achieve precise positioning of the transducer assembly 2 during installation, thus avoiding technical problems such as the transducer not being installed in place or the transducer being damaged due to extrusion. The specific principle will not be elaborated here.

[0067] As described above, it is only the preferred specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A water meter pipe section, characterized in that: include: The pipe section body has an inner cavity for circulating water; a shell, mounted on the outer side of the pipe section body, the shell having a mounting hole, the mounting hole being in communication with the inner cavity, and the inner wall of the mounting hole having a first limiting mechanism; and A transducer assembly is installed in the mounting hole, and the transducer assembly has a second limiting mechanism, which is used to engage with the first limiting mechanism to limit the relative movement between the transducer assembly and the shell in the extension direction of the mounting hole.

2. The water meter pipe section according to claim 1, characterized in that: The transducer assembly comprises: a transducer body; and A limiting member, one end of which abuts against the transducer body; The side wall of the limiting member is provided with an annular groove, the annular groove constitutes the second limiting mechanism, the inner wall of the mounting hole is provided with a protrusion, the protrusion constitutes the first limiting mechanism; or the side wall of the limiting member is provided with a protrusion, the protrusion constitutes the second limiting mechanism, the inner wall of the mounting hole is provided with an annular groove, the annular groove constitutes the first limiting mechanism; The protrusion is engaged with the annular groove to limit the relative movement between the limiting member and the housing in the extending direction of the mounting hole.

3. The water meter pipe section according to claim 2, characterized in that: The transducer assembly also includes a sealing ring, the transducer body includes a first part and a second part coaxially arranged with the first part, the diameter of the first part is larger than the diameter of the second part, the sealing ring is sleeved on the outer wall of the second part, and the sealing ring is used to seal the gap between the outer wall of the second part and the inner wall of the mounting hole.

4. The water meter pipe section according to claim 2, characterized in that: The limiting member is provided with a wire passing hole, and the wire passing hole is used to pass the lead wire of the transducer body.

5. The water meter pipe section according to claim 4, characterized in that: The limiting member is provided with a through hole, a sealing plug for sealing the through hole is provided at the through hole, and the sealing plug is provided with the wire passing hole.

6. The water meter pipe section according to claim 4, characterized in that: The shell comprises a meter connector, a wiring groove for passing the lead wire is provided inside the shell, the wiring groove is communicated with the mounting hole, and the meter connector is provided with a threading hole, the threading hole is communicated with the wiring groove.

7. The water meter pipe section according to claim 1, characterized in that: There are multiple mounting holes and multiple transducer assemblies, and the multiple mounting holes are arranged in a one-to-one correspondence with the multiple transducer assemblies.

8. The water meter pipe section according to any one of claims 1 to 7, characterized in that: The water meter pipe section also includes a sealing component, and the sealing component includes: A sealing cover, used for sealing the mounting hole; a connecting piece, through which the sealing cover is connected to the housing; and A sealing gasket is located between the sealing cover and the shell along the extension direction of the mounting hole, and is used to seal the gap between the sealing cover and the shell.

9. The water meter pipe section according to claim 8, characterized in that: The connecting member is a screw, the sealing cover is provided with a first threaded hole matched with the screw, and the housing is provided with a second threaded hole matched with the screw; the sealing assembly also includes a blocking member, and the blocking member is used to block the first threaded hole.

10. A water meter device, characterized in that: It comprises a meter head and a water meter pipe section as described in any one of claims 1 to 9, wherein the meter head is installed on the water meter pipe section.

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