Base meter pipe section of ultrasonic water meter

Abstract

The invention relates to the technical field of water meter pipe section structures, in particular to a base meter pipe section of an ultrasonic water meter. According to the technical scheme, the ultrasonic water meter comprises an ultrasonic water meter body and pipe sections connected to the two ends of the ultrasonic water meter body, valves are installed on the sides, away from the ultrasonic water meter body, of the two pipe sections, pipe section connecting pieces are fixedly connected to the ends, close to each other, of the pipe sections and the valves, and the two pipe section connecting pieces are connected through a connecting sleeve; the side wall of the connecting sleeve is fixedly sleeved with a supporting sleeve, an axial positioning piece is arranged on the outer wall of the connecting sleeve, transmission pieces are arranged at the two ends of the supporting sleeve, and the axial positioning piece is controlled by the push-in piece to lock the connecting sleeve and the pipe section connecting piece. The design structure of the pipe section is stable in connection, the stable connection state is kept in the axial direction and the circumferential direction, the number of maintenance times is small during use, liquid cannot leak, and then the measurement precision of the ultrasonic water meter is guaranteed; when the valve is operated, the connecting end of the pipe section cannot be loosened, and the stability of the pipe section is improved in multiple aspects.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of water meter pipe section structures, in particular to an ultrasonic water meter base pipe section. BACKGROUND

[0002] The ultrasonic water meter pipe section is an important component indispensable in the installation of an ultrasonic water meter, and the design and installation requirements of the pipe section are crucial to the metering accuracy of the water meter. The pipe section is a straight pipe before and after the water meter, and functions to ensure that the water flow forms a stable and uniform flow state before entering the water meter, reduces the influence of water flow disorder on the metering components of the water meter, and thus guarantees the accuracy of metering. The traditional pipe section and the external water pipe (valve installation position) are usually fixedly connected in a threaded connection mode.

[0003] The traditional threaded connection mode has the problem of insufficient sealing (after long-term use), and the threaded connection relies on the metal contact of threads and sealing materials (such as threaded sealant) to realize sealing. If the thread machining precision is insufficient or the sealing material is not properly applied, liquid leakage is easy to occur, especially in high-pressure and high-temperature environments.

[0004] A valve is arranged on one side of the pipe section, and a relatively large force is used when the valve is operated, and multiple operations can also affect the stability of the threaded connection of the pipe section, thereby affecting the measurement accuracy of the ultrasonic water meter. In order to guarantee the accuracy of the use of the ultrasonic water meter, the pipe section structure needs to be regularly maintained (multiple maintenance times will consume manpower and resources).

[0005] Therefore, the application provides an ultrasonic water meter base pipe section. SUMMARY

[0006] The application aims to solve the technical problems in the background art, and provides an ultrasonic water meter base pipe section.

[0007] The technical scheme of the application is an ultrasonic water meter base pipe section, which comprises an ultrasonic water meter and pipe sections connected at both ends of the ultrasonic water meter, a valve is arranged on the side of each pipe section away from the ultrasonic water meter, a pipe section connector is fixedly connected to the end of each pipe section close to the valve, and the two pipe section connectors are connected through a connecting sleeve.

[0008] A support sleeve is fixedly arranged on the side wall of the connecting sleeve, and an axial positioning member is arranged on the outer wall of the connecting sleeve.

[0009] Transmission members are arranged at both ends of the support sleeve, push-in members are drivingly connected to both end portions of the transmission members, and the axial positioning member is controlled to lock the connecting sleeve and the pipe section connector through the push-in members.

[0010] Preferably, the pipe segment connector comprises a connecting pipe, the side wall of the connecting pipe is fixedly sleeved with a positioning ring, the two ends of the positioning ring are provided with guide members, and the pipe segment connecting end is circumferentially positioned through the cooperation and connection of the guide members and corresponding push-in members.

[0011] Preferably, the axial positioning member comprises a clamping block fixedly connected to the upper end of the supporting sleeve, the axial positioning member further comprises two U-shaped rods, the bottom end of each of the two U-shaped rods is fixedly connected to a pair of connecting blocks, the side wall of the connecting block is penetrated and inserted with a locking block, and the outer surface of the connecting block is fixedly connected with a pull buckle.

[0012] The outer end corner of the locking block is provided as an arc-shaped portion, the side wall of the supporting sleeve is provided with a clamping groove, and the inner end of the locking block is located in the clamping groove.

[0013] The side wall of the connecting pipe is provided with a locking groove, and the locking groove is communicated with the corresponding clamping groove.

[0014] Preferably, a connecting plate is fixedly connected between the two U-shaped rods, the upper end of the connecting plate is provided with a through groove, the through groove is clamped on the outer wall of the clamping block, and the U-shaped rod and the adapter sleeve are fixedly connected through bolts.

[0015] Preferably, the side wall of the supporting sleeve is provided with a control groove, the transmission member comprises a bidirectional screw rod rotatably connected in the control groove, the two ends of the bidirectional screw rod are respectively penetrated through the two ends of the supporting sleeve and extended to the outside of the supporting sleeve, the middle part of the bidirectional screw rod is fixedly sleeved with an anti-skid sleeve, and the outside of the control groove is rotatably connected with a dustproof plate.

[0016] Preferably, the push-in member comprises a threaded sleeve rod telescopically sleeved on the two ends of the bidirectional screw rod, one side of the threaded sleeve rod close to the supporting sleeve is fixedly connected with a push rod, and the side of the push rod facing the arc-shaped portion is provided as an inclined portion.

[0017] Preferably, the guide member comprises a socket provided on the positioning ring, the end surface of the positioning ring is fixedly connected with a guide sleeve communicated with the socket, and the end part of the threaded sleeve rod is telescopically inserted in the guide sleeve during installation.

[0018] Preferably, an introduction member is arranged between the supporting sleeve and the positioning ring, the introduction member comprises a guide rod fixedly connected to the side wall of the supporting sleeve, and the side wall of the positioning ring is provided with a guide hole, and the guide rod is inserted into the guide hole during installation.

[0019] Preferably, the side wall of the connecting pipe is provided with an arc-shaped groove, and raw rubber tape is wound in the arc-shaped groove before insertion.

[0020] Preferably, the pull buckle sleeve is outside the threaded sleeve rod, and the inner wall of the pull buckle and the outer wall of the threaded sleeve rod have a relative movement distance.

[0021] Compared with the prior art, the present application has the following beneficial technical effects:

[0022] The present application sets an axial positioning member on the outer end of the connecting sleeve, and rotating the bidirectional screw rod can drive the two threaded sleeve rods to move away, and then the two push rods on the same side gradually push the two lock blocks to be inserted into the two lock grooves on the same side, so that the axial relative fixation of the pipe segment connector and the connecting sleeve is ensured, and the stability of the pipe segment connector is ensured, and then the measurement accuracy of the ultrasonic water meter is not affected; the connection stability of the pipe segment is improved, and the cost of subsequent maintenance is reduced.

[0023] When subsequent maintenance of the pipe segment is needed, the bidirectional screw rod is reversely rotated to make the push rod move away from the lock block, the lock block can be pulled out a certain distance outward by holding the pull buckle, the inner end of the lock block is away from the lock groove, and then the subsequent disassembly and maintenance are facilitated.

[0024] The positioning ring is provided with a guide member, and when installed, the threaded sleeve rod is inserted into the guide sleeve to position the pipe segment connection end in the circumferential direction, so that loosening of the pipe segment connection end during operation of the valve is avoided, and the stability of the pipe segment connection is further improved by the ingenious design structure.

[0025] In summary, the pipe segment design structure of the present application is stable in connection, maintains stable connection in the axial and circumferential directions, has less maintenance frequency during use, and liquid does not leak, thereby ensuring the measurement accuracy of the ultrasonic water meter; the connection end of the pipe segment is not loosened during operation of the valve, and the stability of the pipe segment is improved in many aspects. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a perspective view of an ultrasonic water meter base pipe segment;

[0027] Figure 2 is a structure schematic view of the axial positioning member in the present application;

[0028] Figure 3 is a structure schematic view of the Figure 2 enlarged structure schematic view of A in

[0029] Figure 4 is a rear view of Figure 2 ;

[0030] Figure 5 is an enlarged structure schematic view of B in Figure 4 ;

[0031] Figure 6 is a structure schematic view of the transmission member in the present application;

[0032] Figure 7 is a bottom structure schematic view of Figure 2 ;

[0033] Figure 8 is a structural schematic diagram of the pipe segment connector in the application.

[0034] Reference signs: 1, ultrasonic water meter; 2, pipe segment; 3, positioning ring; 4, support sleeve; 5, connecting sleeve; 6, valve;

[0035] 7, axial positioning member; 71, clamping block; 72, U-shaped rod; 73, bolt; 74, connecting block; 76, locking block; 77, pull buckle; 78, arc-shaped part; 79, connecting plate; 710, locking groove;

[0036] 8, guide member; 81, insertion opening; 82, guide sleeve;

[0037] 9, push-in member; 91, threaded sleeve rod; 92, push rod; 93, inclined part;

[0038] 10, dustproof plate; 11, transmission member; 111, bidirectional screw rod; 112, anti-skid sleeve;

[0039] 12, clamping groove; 14, pipe segment connector; 141, connecting pipe; 142, arc-shaped groove;

[0040] 15, introduction member; 151, guide rod; 152, guide hole;

[0041] 16, control groove. DETAILED DESCRIPTION

[0042] The technical solutions of the application are further described in detail below in combination with the drawings and specific embodiments.

[0043] The components of the embodiments of the application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the application.

[0044] Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the application.

[0045] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0047] Embodiment

[0048] As Figures 1-8 shown, the ultrasonic water meter base pipe segment provided by the present application comprises an ultrasonic water meter 1 and pipe segments 2 connected at both ends thereof, and valves 6 are mounted on the sides of the two pipe segments 2 away from the ultrasonic water meter 1. In the drawings of the present application, only the specific structure of the end of one of the pipe segments 2 is drawn, and the end of the pipe segment 2 close to the valve 6 is fixedly connected with a pipe segment connector 14, and the two pipe segment connectors 14 are connected through a connecting sleeve 5, and the inner wall of the connecting sleeve 5 is provided with a liquid conveying channel matched with the pipe segment connector 14.

[0049] The side wall of the connecting sleeve 5 is fixedly sleeved with a supporting sleeve 4, and the outer wall of the connecting sleeve 5 is provided with an axial positioning member 7; the pipe segment connector 14 and the connecting sleeve 5 are fixed through the axial positioning member 7, which can prevent the pipe segment connector 14 from being loosened axially due to the impact of liquid or external force during use, and ensure the stability of the pipe segment connection.

[0050] Both ends of the support sleeve 4 are provided with transmission members 11, wherein the sidewall of the support sleeve 4 is provided with a control groove 16, the transmission member 11 comprises a bidirectional screw 111 rotatably connected in the control groove 16, both ends of the bidirectional screw 111 extend to the outside of the support sleeve 4 through both ends of the support sleeve 4, respectively, a non-slip sleeve 112 is fixedly sleeved on the middle part of the bidirectional screw 111, which facilitates the rotation of the bidirectional screw 111, and a dustproof plate 10 is rotatably connected outside the control groove 16, and the outer surface of the dustproof plate 10 is provided with a protruding block, which facilitates lifting the dustproof plate 10. Both ends of the transmission member 11 are drivingly connected with a push-in member 9, and the axial positioning member 7 is locked and connected with the pipe segment connecting member 14 through the push-in member 9. Wherein, the push-in member 9 comprises a threaded sleeve rod 91 sleeved on both ends of the bidirectional screw 111, and the threaded sleeve rod 91 is fixedly connected with a push rod 92 on the side close to the support sleeve 4. Opening the dustproof plate 10 can rotate the bidirectional screw 111, which can drive the two threaded sleeve rods 91 to slide on the sidewall of the bidirectional screw 111. Specifically, forward rotation of the bidirectional screw 111 drives the two threaded sleeve rods 91 to move away, and reverse rotation of the bidirectional screw 111 drives the two threaded sleeve rods 91 to move close (restore the original state, facilitate subsequent disassembly and maintenance).

[0051] Specifically, the pipe segment connecting member 14 comprises a connecting pipe 141, and the sidewall of each of the two connecting pipes 141 is fixedly sleeved with a positioning ring 3, and the two positioning rings 3 are fixedly sleeved on the ends of the two connecting pipes 141 away from each other. Both ends of the positioning ring 3 are provided with a guide 8, and the pipe segment connecting end is circumferentially positioned by cooperating the guide 8 with the corresponding push-in member 9. In the process of use, when the valve 6 is controlled, the circumferential sliding of the connecting pipe 141 relative to the connecting sleeve 5 can be effectively avoided. Wherein, the sidewall of the connecting pipe 141 is provided with an arc-shaped groove 142, and the adhesive tape is wound in the arc-shaped groove 142 before insertion, to ensure the sealing effect.

[0052] The axial positioning member 7 comprises a clamping block 71 fixedly connected to the upper end of the supporting sleeve 4, and further comprises two U-shaped rods 72, the bottom end of each of the two U-shaped rods 72 is fixedly connected to a pair of connecting blocks 74, the side wall of the connecting block 74 is penetrated and inserted with a locking block 76, the outer surface of the connecting block 74 is fixedly connected with a pull buckle 77, the pull buckle 77 is sleeved on the outer side of the threaded sleeve rod 91, the inner wall of the pull buckle 77 has a relative movement distance with the outer wall of the threaded sleeve rod 91, and the movement of the threaded sleeve rod 91 is not hindered, and the locking block 76 can be smoothly pushed into the locking slot 710. The outer end corner of the locking block 76 is provided with an arc-shaped portion 78, one side of the push rod 92 towards the arc-shaped portion 78 is provided with an inclined portion 93, when the push rod 92 moves towards the locking block 76, the inclined portion 93 is in contact with the arc-shaped portion 78, the locking block 76 is gradually pushed towards the direction of the adapter sleeve 5, until the inclined portion 93 slides through the arc-shaped portion 78, the outer wall of the push rod 92 is tightly attached to the outer surface of the locking block 76, and the locking block 76 is effectively prevented from loosening outward. The side wall of the supporting sleeve 4 is provided with a clamping slot 12, the inner end of the locking block 76 is located in the clamping slot 12, the side wall of the connecting pipe 141 is provided with a locking slot 710, the locking slot 710 is penetrated with the corresponding clamping slot 12, the clamping slot 12 is provided with a through opening corresponding to the locking slot 710, the inner end of the locking block 76 is inserted into the locking slot 710 through the through opening, and the fixing of the connecting pipe 141 and the adapter sleeve 5 is realized.

[0053] Further, the two U-shaped rods 72 are fixedly connected with a connecting plate 79, the upper end of the connecting plate 79 is provided with a through slot, the through slot is clamped on the outer wall of the clamping block 71, and the U-shaped rods 72 and the adapter sleeve 5 are fixed through bolts 73. The two U-shaped rods 72 are fixed synchronously, the steps of installation operation are reduced, the two U-shaped rods 72 are positioned synchronously when the clamping block 71 is aligned with the through slot, and the upper end of the adapter sleeve 5 is provided with a threaded groove corresponding to the bolt 73. Before the pipe section connector 14 is fixed, the axial positioning member 7 is fixed to the upper end of the adapter sleeve 5.

[0054] In the embodiment, the guide member 8 comprises a socket 81 provided on the positioning ring 3, the end surface of the positioning ring 3 is fixedly connected with a guide sleeve 82 penetrated with the socket 81, and the guide sleeve 82 is arranged on the side towards the threaded sleeve rod 91; the end portion of the threaded sleeve rod 91 is slidingly inserted into the guide sleeve 82 during installation, and the threaded sleeve rod 91 can be slidingly penetrated with the socket 81. The supporting sleeve 4 and the positioning ring 3 are provided with a lead-in member 15, the lead-in member 15 comprises a guide rod 151 fixedly connected to the side wall of the supporting sleeve 4, the side wall of the positioning ring 3 is provided with a guide hole 152, the guide rod 151 is inserted into the guide hole 152 during installation, the guide rod 151 is inserted into the guide hole 152 before the pipe installation connection, the axial direction of the connected pipe can be guided, and the pipe section connector 14 can be inserted into the adapter sleeve 5 with the aid of external tightening tools or clamping tools during installation.

[0055] The working principle of the embodiment is as follows: first, the axial positioning member 7 is installed at the upper end of the connecting sleeve 5; when installing, the through slot at the upper end of the connecting plate 79 is clamped on the side wall of the clamping block 71, and then the two bolts 73 are screwed in to fix the two U-shaped rods 72 at the upper end of the connecting sleeve 5, at this time, the locking block 76 is in the clamping slot 12 and is aligned with the locking slot 710. A suitable amount of raw rubber belt is wound in the two arc-shaped slots 142, and the two pipe segment connectors 14 are inserted into the two ends of the connecting sleeve 5 in sequence, and the guide rod 151 is inserted into the guide hole 152 in the initial stage, and then the corresponding threaded sleeve rods 91 on both sides are inserted into the guide sleeve 82. First, the pipe segment connector 14 at the end of the pipe segment 2 is inserted into one end of the connecting sleeve 5, and a pushing or clamping tool is used to make the pipe segment connector 14 completely inserted into one end of the connecting sleeve 5, both clamping surfaces of the clamping tool are flat, one of which is in contact with the positioning ring 3, and the other is in contact with the end of the connecting sleeve 5. Then the pipe segment connector 14 at the end of the valve 6 is inserted into the other end of the connecting sleeve 5, and the clamping tool is used to make the pipe segment connector 14 at the end of the valve 6 completely inserted into the other end of the connecting sleeve 5. After the two pipe segment connectors 14 are inserted into the connecting sleeve 5, the two threaded sleeve rods 91 on both sides are inserted into the corresponding guide sleeves 82. When the two pipe segment connectors 14 are completely inserted into the connecting sleeve 5, the two positioning rings 3 are in contact with the two ends of the connecting sleeve 5, respectively.

[0056] Next, the dustproof plates 10 on both sides of the supporting sleeve 4 are opened, and the bidirectional screw rod 111 is rotated in sequence. The forward rotation of the bidirectional screw rod 111 makes the two threaded sleeve rods 91 move away from each other, and the ends of the two threaded sleeve rods 91 away from each other will respectively penetrate the two insertion ports 81 on both sides, which can position the circumferential end of the two pipe segment connectors 14, effectively avoiding the loosening between the pipe segment connector 14 and the connecting sleeve 5 when the valve 6 is operated. The two threaded sleeve rods 91 away from each other also drive the two push rods 92 to move away from each other, and the two push rods 92 are respectively slid to the outer ends of the two locking blocks 76; the inclined part 93 is in contact with the arc-shaped part 78, and the locking block 76 is gradually inserted into the locking slot 710, and the positioning of the locking block 76 is completed under the resistance of the push rod 92. The other side of the bidirectional screw rod 111 is rotated in the same way, so that the two locking blocks 76 on the other side are also inserted into the two locking slots 710. In turn, the two pipe segment connectors 14 are positioned in the connecting sleeve 5 at the same time, and the axial loosening or displacement phenomenon does not occur, which improves the stability of the pipe segment connection.

[0057] When the pipe section needs to be maintained in the later stage, it is convenient to disassemble, reverse rotate the bidirectional screw rod 111 in turn, move the two threaded sleeve rods 91 close to each other, further drive the push rod 92 to move away from the lock block 76, then hold the pull buckle 77 and pull it outward, make the lock block 76 move away from the lock groove 710. Then the pipe section connecting piece 14 can be pushed out from the two ends of the connection sleeve 5 in turn by using the expansion tool. In summary, the pipe section design structure of the application is stable in connection, keeps stable connection state in the axial and circumferential directions, has less maintenance frequency during use, liquid cannot leak, further ensures the measurement accuracy of the ultrasonic water meter 1, and is convenient to disassemble and maintain.

[0058] The above specific embodiments are only preferred embodiments of the application, based on the technical solutions of the application and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments; the above specific embodiments are only an explanation of the application, and not a limitation of the application.

Claims

1. An ultrasonic water meter base pipe section, comprising an ultrasonic water meter (1) and pipe sections (2) connected to its two ends, wherein valves (6) are installed on the side of each pipe section (2) away from the ultrasonic water meter (1), characterized in that, The pipe section (2) and the valve (6) are fixedly connected to each other at their respective ends, and the two pipe section connectors (14) are connected by a connecting sleeve (5). The side wall of the connecting sleeve (5) is fixedly fitted with a support sleeve (4), and the outer wall of the connecting sleeve (5) is provided with an axial positioning element (7). Both ends of the support sleeve (4) are provided with transmission components (11), and the two ends of the transmission components (11) are connected to push-in components (9). The push-in components (9) control the axial positioning component (7) to lock the connecting sleeve (5) and the pipe section connecting component (14).

2. The ultrasonic water meter base pipe section according to claim 1, characterized in that, The pipe section connector (14) includes a connecting pipe (141). The side walls of the two connecting pipes (141) on the same side are fixedly fitted with positioning rings (3). Both ends of the positioning rings (3) are provided with guides (8). The pipe section connection end is circumferentially positioned by the cooperation of the guides (8) with the corresponding push-in parts (9).

3. The ultrasonic water meter base pipe section according to claim 2, characterized in that, The axial positioning component (7) includes a locking block (71) fixedly connected to the upper end of the support sleeve (4). The axial positioning component (7) also includes two U-shaped rods (72). A pair of connecting blocks (74) are fixedly connected to the bottom ends of the two U-shaped rods (72). A locking block (76) is inserted through the side wall of the connecting block (74). A pull buckle (77) is fixedly connected to the outer surface of the connecting block (74). The outer corner of the locking block (76) is set as an arc-shaped part (78), and the side wall of the support sleeve (4) is provided with a slot (12), and the inner end of the locking block (76) is located in the slot (12); The side wall of the connecting pipe (141) is provided with a locking groove (710), which is connected to the corresponding card slot (12).

4. The ultrasonic water meter base pipe section according to claim 3, characterized in that, A connecting plate (79) is fixedly connected between the two U-shaped rods (72). The upper end of the connecting plate (79) is provided with a through groove, which is locked on the outer wall of the locking block (71). The U-shaped rods (72) and the connecting sleeve (5) are fixed by bolts (73).

5. The ultrasonic water meter base pipe section according to claim 3, characterized in that, The side wall of the support sleeve (4) is provided with a control groove (16). The transmission component (11) includes a bidirectional screw (111) rotatably connected in the control groove (16). The two ends of the bidirectional screw (111) pass through the two ends of the support sleeve (4) and extend to the outside of the support sleeve (4). The middle part of the bidirectional screw (111) is fixedly fitted with an anti-slip sleeve (112). A dustproof plate (10) is rotatably connected to the outside of the control groove (16).

6. The ultrasonic water meter base pipe section according to claim 5, characterized in that, The pusher (9) includes a threaded sleeve (91) that is driven and sleeved at both ends of the bidirectional screw (111). A push rod (92) is fixedly connected to the side of the threaded sleeve (91) near the support sleeve (4). The side of the push rod (92) facing the arc-shaped part (78) is set as an inclined part (93).

7. The ultrasonic water meter base pipe section according to claim 6, characterized in that, The guide (8) includes a socket (81) on the positioning ring (3), and a guide sleeve (82) that communicates with the socket (81) is fixedly connected to the end face of the positioning ring (3). During installation, the end of the threaded sleeve (91) is slidably inserted into the guide sleeve (82).

8. The ultrasonic water meter base pipe section according to claim 2, characterized in that, An inlet member (15) is provided between the support sleeve (4) and the positioning ring (3). The inlet member (15) includes a guide rod (151) fixedly connected to the side wall of the support sleeve (4). The side wall of the positioning ring (3) is provided with a guide hole (152). During installation, the guide rod (151) is inserted into the guide hole (152).

9. The ultrasonic water meter base pipe section according to claim 2, characterized in that, The side wall of the connecting pipe (141) is provided with an arc-shaped groove (142), and raw rubber tape is wrapped in the arc-shaped groove (142) before insertion.

10. The ultrasonic water meter base pipe section according to claim 6, characterized in that, The buckle (77) is fitted on the outside of the threaded sleeve (91), and the inner wall of the buckle (77) and the outer wall of the threaded sleeve (91) have a relative movement distance.

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