Connecting structure for ultrasonic flowmeter probe

Abstract

The utility model provides a connecting structure for an ultrasonic flowmeter probe, and belongs to the technical field of pipeline flow measurement. The connecting structure is arranged on the outer wall of a pipeline in a surrounding mode and comprises a steel belt assembly, a locking screw rod, a ball valve connecting base and a ball valve, the steel belt assembly comprises an arc-shaped first steel belt and an arc-shaped second steel belt which is oppositely matched with the first steel belt and used for surrounding the outer wall of the pipeline, and clamping bases are arranged at the two ends of the first steel belt and the two ends of the second steel belt correspondingly; the locking screw rod is arranged on the clamping seat in a penetrating manner; a first nut is assembled at one end of the locking screw rod; a second nut is assembled at the other end of the locking screw rod; at least two ball valve connecting seats are arranged, and one ball valve connecting seat is arranged at the middle section of the first steel belt; the other ball valve connecting seat is arranged at the middle section of the second steel belt; and the ball valves are correspondingly mounted on the ball valve connecting seats. The ultrasonic flowmeter can be conveniently mounted on a cast iron pipeline, a cement pipeline, a PE (polyethylene) pipeline and other pipelines.

Description

Technical Field

[0001] This utility model relates to a connection structure for an ultrasonic flow meter probe, belonging to the field of pipeline flow measurement technology. Background Technology

[0002] Most urban water supply pipelines are buried underground, making routine maintenance inconvenient. Therefore, multiple insertion flow meters are typically installed on these pipelines to monitor pressure and flow changes in real time, allowing for the detection of leaks and timely repairs. Because water supply networks across the country have a wide variety of pipe diameters, and even pipes of the same diameter require different materials to suit different regional environments, their outer diameters also vary. For cast iron, cement, and PE pipes, it's impossible to directly weld ultrasonic flow meter probes and ball valve connectors onto the pipes, making it impossible to drill holes or install ultrasonic flow meter probes. Therefore, connecting devices that facilitate the insertion and installation of ultrasonic flow meters are often required.

[0003] The current connection device uses a steel strap clamped around the outside of the pipe, with tightening screws at both ends to secure it. The problem with this connection device is that the steel strap is tightened by a single-sided tightening screw, which results in uneven force distribution and can easily cause leakage at the ball valve connection seat. In addition, the tightening screw has left and right threads, and the adjustment position is located in the middle of the tightening screw. In actual installation, this position is the narrowest relative to the pipe wall being tested, especially for small-diameter pipes, where it is almost touching the pipe wall and cannot be adjusted and tightened with a wrench.

[0004] Based on the above problems, a connection structure for ultrasonic flow meter probes is needed that is suitable for the installation and use of insertion-type ultrasonic flow meters. Utility Model Content

[0005] To address the aforementioned problems, the purpose of this invention is to provide a connection structure for ultrasonic flow meter probes, resolving issues of uneven force distribution on one side and inconvenient installation and adjustment.

[0006] To achieve the above objectives, this utility model provides a connection structure for an ultrasonic flow meter probe, specifically including the following technical solution:

[0007] A connection structure for an ultrasonic flow meter probe, the connection structure being disposed around the outer wall of a pipe, the connection structure comprising:

[0008] A steel strip assembly includes an arc-shaped first steel strip and an arc-shaped second steel strip that is configured to cooperate with the first steel strip for surrounding the outer wall of a pipe. Both ends of the first and second steel strips are provided with retainers.

[0009] A locking screw is mounted on a retainer for connecting two adjacent retainers that are positioned opposite each other; a first nut is fitted at one end of the locking screw; a second nut for locking is fitted at the other end of the locking screw.

[0010] At least two ball valve connectors are provided, one of which is located in the middle section of the first steel strip; the other ball valve connector is located in the corresponding middle section of the second steel strip; and a ball valve is installed on the corresponding ball valve connector.

[0011] A further improvement of this utility model is that a slot is provided on the card holder, and the two ends of the first steel strip and the second steel strip are fixedly connected in the slot by welding.

[0012] The improvement of this utility model is that the contact end face of the card holder with the first nut and the second nut is provided with an arc-shaped countersunk groove.

[0013] A further improvement of this utility model is that the ball valve connecting seat includes a lower square base plate, a connecting cylinder for mounting the ball valve is vertically arranged on the upper surface of the square base plate, and mounting ears for mounting the first steel strip or the second steel strip are provided on the square base plate. The ball valve connecting seat is provided with a through hole in the radial direction corresponding to the ball valve.

[0014] A ball valve sealing ring is press-fitted onto the contact surface where the ball valve and the ball valve connecting seat fit together.

[0015] A further improvement of this utility model is that the lower end face of the ball valve connecting seat is fitted and connected to the outer wall of the pipe through a fixing ring.

[0016] The fixing ring has a through hole at its center, and a first washer is placed inside the hole. This protects the first washer from damage and ensures its usability.

[0017] A further improvement of this utility model is that a probe assembly is mounted on the ball valve, and a second washer is pressed onto the contact surface where the ball valve and the probe assembly fit together.

[0018] A further improvement of this utility model is that the probe assembly includes a signal cable and a probe rod, the head of the probe rod is provided with an acoustic wedge block, the middle part of the probe rod is fitted with a connecting nut and a locking nut that are matched with the ball valve from the inside to the outside, and the end of the probe rod is connected to a cable protection sleeve through an outlet nut.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model's connection structure for ultrasonic flow meter probes is mainly used on cast iron pipes, cement pipes, PE pipes, and other types of pipes. Using this connection structure, ultrasonic flow meters can be easily installed on these types of pipes. Compared with similar products on the market, this utility model adopts a symmetrical locking screw structure, ensuring even force distribution on the ball valve connection seat and preventing leakage due to uneven force. Furthermore, in this utility model, the locking screw is tightened at its end, not in the middle, and away from the outer wall of the pipe being measured, facilitating installation and operation.

[0021] In this invention, a first gasket, a ball valve sealing ring, and a second gasket are respectively provided on the contact surfaces of adjacent components, which enhances the sealing performance, prevents leakage, and ensures the accuracy of monitoring data. Attached Figure Description

[0022] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a front view of the present invention installed on a pipe. The figure is a schematic diagram of two sets of the connection structure described in the present invention installed on the pipe.

[0024] Figure 2 for Figure 1 Sectional view of AA;

[0025] Figure 3 for Figure 2 A magnified view of B in the middle;

[0026] Figure 4 This is a schematic diagram of the steel strip assembly of this utility model;

[0027] Figure 5 A schematic diagram illustrating the process of creating an insertion hole in the pipe wall using this utility model;

[0028] Figure 6 This is a diagram showing the state of the probe assembly after installation.

[0029] Figure 7 This is a schematic diagram of the probe assembly structure of an ultrasonic flow meter.

[0030] Explanation of reference numerals in the attached figures

[0031] 1. Locking screw; 2. First nut; 3. Second nut; 4. Steel strip assembly; 5. Retaining ring; 6. First washer; 7. Ball valve connecting seat; 8. Ball valve sealing ring; 9. Ball valve; 10. First steel strip; 11. Second steel strip; 12. Pipe; 13. Probe assembly; 14. Card holder; 15. Threaded connector; 16. Drill bit; 17. Handle; 18. Electric drill; 19. Insertion hole; 20. Second washer; 21. Connecting nut; 22. Teflon tape; 23. Probe rod; 24. Acoustic wedge; 25. Locking nut; 26. Outlet nut; 27. Cable protection sleeve; 28. Signal cable. Detailed Implementation

[0032] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0033] The directional terms or their approximate terms used throughout this utility model, such as "top," "bottom," "inner," "outer," and "side," are primarily for reference to the directions in the accompanying drawings. These directional terms or their approximate terms are only used to assist in explaining and understanding the embodiments of this utility model and are not intended to limit this utility model. In this utility model, "first" and "second" are only used to indicate quantity and have no other referential meaning such as order or importance.

[0034] A connection structure for an ultrasonic flow meter probe, the connection structure being arranged around the outer wall of the pipe 12, such as... Figure 1 and Figure 2 As shown, the system mainly includes a locking screw 1, a first nut 2, a second nut 3, a steel strip assembly 4, a ball valve connecting seat 7, and a ball valve 9. The steel strip assembly 4 is clamped onto the pipe 12. The locking screw 1 passes through and fixes the end of the steel strip assembly 4, and the first nut 2 and the second nut 3 are tightened onto both ends of the locking screw 1, respectively. A ball valve connecting seat 7 is installed on the steel strip assembly 4, and the ball valve 9 is installed inside the ball valve connecting seat 7. The probe assembly of an ultrasonic flow meter can be installed on the ball valve 9 fixed to the pipe 12, facilitating the measurement of pipe pressure and flow.

[0035] See Figure 1 and Figure 4The steel strip assembly 4 includes a first steel strip 10 and a second steel strip 11. Both the first steel strip 10 and the second steel strip 11 are arc-shaped, adapted to the shape of the outer wall of the pipe 12, and surround the outer wall of the pipe 12 through the first steel strip 10 and the corresponding fitting. Each end of the first steel strip 10 and the second steel strip 11 is provided with a retainer 14, and the two retainers 14 located on the same side are arranged opposite each other. The retainer 14 adopts a square plate design, and the contact end face of the retainer 14 with the first nut 2 and the second nut 3 is provided with an arc-shaped countersunk groove. A slot is opened on the retainer 14, and the ends of the first steel strip 10 and the second steel strip 11 are inserted into the slot and then fixedly connected in the slot by welding. In this utility model, two first steel strips 10 are provided, arranged side by side, located on both sides of the square plate end face of the retainer 14, to ensure a more stable connection. Similarly, two second steel strips 11 are also provided in parallel arrangement.

[0036] A locking screw 1 is mounted on a retainer 14 for connecting two adjacent retainers 14 arranged opposite to each other; one end of the locking screw 1 is fitted with a first nut 2; the other end of the locking screw 1 is fitted with a second nut 3 for locking. In this utility model, as... Figure 2 As shown, the first nut 2 is placed at the lower end of the locking screw 1 to prevent loosening after fixing; the second nut 3 for locking is located at the upper end of the locking screw 1, which facilitates manual tightening from above.

[0037] The ball valve connecting seat 7 of the connecting structure is provided in at least two sets, one of which is located in the middle section of the first steel strip 10; the other ball valve connecting seat 7 is located in the middle section of the second steel strip 11, corresponding to a predetermined position of the first steel strip 10. The predetermined positions of the two ball valve connecting seats 7 can be selected by those skilled in the art as needed. Preferably, in this utility model, the radial direction of the two ball valve connecting seats 7 coincides with the same diameter direction of the pipe 12. In this embodiment, two sets of four ball valve connecting seats 7 are provided.

[0038] The ball valve connecting seat 7 includes a lower square base plate. A connecting cylinder for mounting a ball valve 9 is vertically arranged on the upper surface of the square base plate. Mounting ears are provided on both sides of the upper surface of the square base plate, located on both sides of the connecting cylinder, for threading a first steel strip 10 or a second steel strip 11. During installation, the first steel strip 10 is threaded through the mounting ears, connecting the ball valve connecting seat 7 to the first steel strip 10. The ball valve connecting seat 7 can be slid to a predetermined position on the first steel strip 10 as needed. The second steel strip 11 is connected to the ball valve connecting seat 7 in the same way. In this invention, the two first steel strips 10 and the second steel strip 11 are respectively threaded through the mounting ears on both sides, located on both sides of the square base plate of the ball valve connecting seat 7, ensuring a stable installation.

[0039] The ball valve connector 7 has a through hole radially corresponding to the ball valve 9. The lower end face of the ball valve connector 7 is fitted to the outer wall of the pipe 12 via a retaining ring 5. The retaining ring 5 has a through hole at its center, and a first washer 6 is placed inside the hole. The center hole of the first washer 6 corresponds to the through hole of the ball valve connector 7. The retaining ring 5 effectively protects the first washer 6, ensuring a good seal.

[0040] Ball valve 9 is mounted on ball valve connector 7. Ball valve sealing ring 8 is press-fitted onto the contact surface where ball valve 9 and ball valve connector 7 mate.

[0041] During installation, the retaining ring 5, the first washer 6, and the ball valve connecting seat 7 are secured onto the steel strip assembly 4 and moved to their designated positions on the first steel strip 10 and the second steel strip 11. The locking screw 1 is then threaded onto the adjacent retaining seat 14, and the first nut 2 and the second nut 3 are screwed onto the locking screw 1. The locking screws 1 on both sides are slowly tightened, and it is checked that the ball valve connecting seat 7 is in the designated position, the retaining ring 5 is correctly positioned, and the first washer 6 is within the retaining ring 5. After confirming that everything is correct, the locking screws 1 on both sides are tightened simultaneously to complete the fixed installation of the connection structure.

[0042] After the connection structure is fixed, a hole needs to be drilled in pipe 12 to serve as the insertion hole 19 for the probe assembly. The drilling process using a hole saw is as follows: First, connect the threaded connector 15 of the hole saw to the ball valve 9 and tighten it; turn on the electric drill 18, rotate the handle 17 of the hole saw to lower the drill bit 16 on the hole saw, and drill the hole. After drilling, move the drill bit 16 back up, close the ball valve 9, and remove the hole saw. See the image for the completed insertion hole 19. Figure 5 As shown.

[0043] After the socket 19 is opened, the transducer probe assembly 13 of the ultrasonic flow meter is installed onto the ball valve 9. The four probe assemblies 13 are installed as shown in the figure. Figure 6 As shown, a second washer 20 is press-fitted onto the contact surface where the ball valve 9 and the probe assembly 13 fit together to ensure good sealing performance.

[0044] In this utility model, the probe assembly 13 includes a signal cable 28 and a probe rod 23. The head of the probe rod 23 is provided with an acoustic wedge block 24. The middle part of the probe rod 23 is fitted with a connecting nut 21 and a locking nut 25 that are matched with the ball valve 9 from the inside to the outside. The end of the probe rod 23 is connected to the cable protection sleeve 27 through the cable outlet nut 26.

[0045] During installation, place the second washer 20 into the ball valve 9, wrap the connecting nut 21 on the probe assembly 13 with Teflon tape 22, tighten the connecting nut 21, then move the probe rod 23 on the probe assembly 13 to the designated position according to the required insertion depth, and finally tighten the locking nut 25. At this time, the acoustic wedge 24 is installed on the head of the probe rod 23, the connecting nut 21 is connected to the ball valve 9, and the probe rod 23 can move on the connecting nut 21 to facilitate adjustment of the insertion depth of the probe rod 23. The cable protection sleeve 27 prevents the signal cable 28 from being damaged at the outlet nut 26.

[0046] This utility model is applicable to pipes such as cast iron pipes, cement pipes, and PE pipes where ultrasonic flow meter probe ball valve connection seats cannot be directly welded, holes cannot be drilled, and ultrasonic flow meter probes cannot be installed. Using this utility model, ultrasonic flow meters can be conveniently installed on the above-mentioned types of pipes.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A connection structure for an ultrasonic flowmeter probe, characterized in that, The connecting structure is arranged around the outer wall of the pipe (12), and the connecting structure includes: The steel strip assembly (4) includes an arc-shaped first steel strip (10) and an arc-shaped second steel strip (11) that is configured to cooperate with the first steel strip (10) for surrounding the outer wall of the pipe (12). Both ends of the first steel strip (10) and the second steel strip (11) are provided with retainers (14). A locking screw (1) is mounted on a card holder (14) for connecting two adjacent card holders (14) that are arranged opposite to each other; a first nut (2) is fitted at one end of the locking screw (1); a second nut (3) for locking is fitted at the other end of the locking screw (1); At least two ball valve connecting seats (7) are provided, one of which is located in the middle section of the first steel strip (10); the other ball valve connecting seat (7) is located in the corresponding middle section of the second steel strip (11); and a ball valve (9) is installed on the corresponding ball valve connecting seat (7).

2. The connection structure for an ultrasonic flowmeter probe according to claim 1, characterized in that, The card holder (14) has a slot, and the two ends of the first steel strip (10) and the second steel strip (11) are fixedly connected in the slot by welding.

3. The connection structure for an ultrasonic flowmeter probe according to claim 2, characterized in that, The contact surfaces of the card holder (14) with the first nut (2) and the second nut (3) are provided with arc-shaped countersunk grooves.

4. The connection structure for an ultrasonic flowmeter probe according to claim 1, characterized in that, The ball valve connecting seat (7) includes a square base plate at the bottom. A connecting cylinder for mounting the ball valve (9) is vertically arranged on the upper surface of the square base plate. The square base plate is provided with mounting ears for mounting the first steel strip (10) or the second steel strip (11). The ball valve connecting seat (7) is provided with a through hole in the radial direction corresponding to the ball valve (9).

5. The connection structure for an ultrasonic flowmeter probe according to claim 1, characterized in that, A ball valve sealing ring (8) is press-fitted onto the contact surface where the ball valve (9) and the ball valve connecting seat (7) fit together.

6. The connection structure for an ultrasonic flowmeter probe according to claim 5, characterized in that, The lower end face of the ball valve connecting seat (7) is attached to the outer wall of the pipe (12) through the fixing ring (5).

7. The connection structure for an ultrasonic flowmeter probe according to claim 6, characterized in that, The fixing ring (5) has a through hole in its center, and a first washer (6) is placed inside the hole of the fixing ring (5).

8. The connection structure for an ultrasonic flowmeter probe according to any one of claims 1-7, characterized in that, The ball valve (9) is equipped with a probe assembly (13), and a second washer (20) is pressed onto the contact surface where the ball valve (9) and the probe assembly (13) fit together.

9. The connection structure for an ultrasonic flowmeter probe according to claim 8, characterized in that, The probe assembly (13) includes a signal cable (28) and a probe rod (23). The probe rod (23) has an acoustic wedge (24) at its head. The middle part of the probe rod (23) is fitted with a connecting nut (21) and a locking nut (25) that are matched with the ball valve (9) from the inside to the outside. The end of the probe rod (23) is connected to a cable protection sleeve (27) through a cable outlet nut (26).

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