An integrated large flow external clamp-on flow meter

Abstract

This utility model discloses an integrated high-flow external clamp-on flow meter, relating to the field of flow meter technology. It includes clamp A, an electrical interface, a measuring pipeline, clamp B, a sensor, an LED screen, locking bolt holes, a first protective shell, a second protective shell, a clamping component, a buffer pad, and a piezoelectric element. Clamps A and B are symmetrically arranged, with arc-shaped grooves on their opposite sides adapted to the measuring pipeline. The arc of the grooves matches the outer arc of the measuring pipeline. The symmetrical arc-shaped grooves of clamps A and B match the outer arc of the measuring pipeline, and multiple locking bolts pass through corresponding locking bolt holes for clamping. The triangular annular anti-slip texture on the inner wall of the arc-shaped grooves enhances the clamping force and reduces clamp loosening and displacement caused by high-flow-rate fluid vibration. The sensor is precisely fixed through a bottom through-hole and a parallel threaded hole in clamp A, preventing sensor position displacement, ensuring the relative position stability of the piezoelectric element and the measuring pipeline, reducing ultrasonic wave propagation path deviation, and improving flow measurement accuracy.

Description

Technical Field

[0001] This utility model relates to the field of flow meter technology, specifically to an integrated large-flow external clamp-on flow meter. Background Technology

[0002] In the field of industrial fluid metering, clamp-on flow meters have become one of the mainstream metering devices for high-flow scenarios due to their advantages of not requiring pipe disassembly, convenient installation, and no impact on fluid transport. They are widely used in petrochemical, municipal water supply, power cooling systems and other fields. Traditional clamp-on flow meters often use two-point bolt fixing or simple snap-fit ​​designs to connect the clamp to the measuring pipeline. The inner wall of the clamp is not optimized for the pipeline's shape, relying solely on the clamping force of a single bolt for fixation. Under high flow conditions, the continuous vibration generated by the high-speed fluid flow and the thermal expansion and contraction of the pipeline due to temperature changes can easily lead to gaps or relative misalignment between the clamp and the outer wall of the measuring pipeline. While some products increase the number of bolts, the symmetrical distribution of the holes is not clearly defined, resulting in uneven clamping force and further exacerbating clamp loosening. This structural defect directly causes a change in the relative position of the sensor and the measuring pipeline, causing the ultrasonic wave propagation path to deviate from the preset trajectory, ultimately leading to measurement errors. Utility Model Content

[0003] The purpose of this invention is to provide an integrated high-flow-rate clamp-on flow meter. In this device, the ultrasonic flow meter measures the time it takes for an ultrasonic signal to be transmitted from ① to ②. When the flow rate increases, the time it takes for the signal to be transmitted from ① to ② will be shortened, thus accelerating the signal. By understanding the relationship between the flow time and the flow rate, the ultrasonic flow meter can monitor the fluid in real time, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: An integrated high-flow external clamp-on flow meter includes clamp A, an electrical interface, a measuring pipeline, clamp B, a sensor, an LED screen, locking bolt holes, a first protective shell, a second protective shell, a clamping element, a buffer pad, and a piezoelectric plate. Clamp A and clamp B are symmetrically arranged, with arc-shaped grooves on their opposite sides to accommodate the measuring pipeline; the arc of the grooves matches the outer arc of the measuring pipeline. Multiple locking bolt holes are provided, with multiple bolts passing through corresponding holes to clamp both clamps. The measuring pipeline is embedded within the arc-shaped grooves. Two parallel threaded holes are located in the center of the upper surface of clamp A. Two through holes are correspondingly located on the bottom of the sensor, with two bolts passing through the through holes and screwed into the threaded holes to fix the sensor. The first protective shell is located above clamp A, and the second protective shell is located below clamp B. The electrical interface is fixed to the center of the right side wall of the first protective shell, with internal wires connecting to the sensor signal output terminal. The LED screen is embedded in the center of the front of the first protective shell, with wires on the back connecting to the sensor circuit board.

[0005] As a further technical solution of this utility model, the first protective shell covers the upper surface of clamp A and the upper part of the sensor, and the second protective shell is symmetrical with the first protective shell, with its opening facing upward and covering the lower surface of clamp B; multiple bolts pass through the through holes of the second protective shell and are screwed into the bolt holes of the first protective shell for fixation; the first protective shell has a circular mounting hole corresponding to the electrical interface, and the inner diameter of the hole is adapted to the outer diameter of the interface.

[0006] As a further technical solution of this utility model, the sensor has a circular mounting groove in the middle of the side facing the measuring pipeline, and the inner diameter of the groove is adapted to the outer diameter of the piezoelectric sheet; the piezoelectric sheet is a circular sheet, embedded in the groove and its outer side is flush with the side of the sensor; the buffer pad is a cylindrical elastic element with the same diameter as the piezoelectric sheet, one side is attached to the inner side of the piezoelectric sheet and the other side is attached to the inner wall of the groove bottom; the clamping element is a ring-shaped metal part with an inner diameter adapted to the piezoelectric sheet and an outer diameter larger than the inner diameter of the groove, and the inner wall thread is screwed on to match the outer wall thread of the groove, with one end face abutting the edge of the piezoelectric sheet for fixation.

[0007] As a further technical solution of this utility model, the inner walls of the arc-shaped grooves of clamps A and clamps B are provided with triangular annular anti-slip patterns, thereby increasing the contact area and avoiding displacement.

[0008] As a further technical solution of this utility model, the electrical interface is a cylindrical metal connector with a protrusion diameter larger than the inner diameter of the mounting hole of the first protective shell.

[0009] As a further technical solution of this utility model, the LED screen is a rectangular LCD panel, and the first protective shell has an adapter opening in the center of the front, with the screen embedded and flush with the front; the back of the screen is connected to a rectangular circuit board, which is connected to the sensor signal output terminal through four wires; the inner wall of the first protective shell is provided with four L-shaped metal brackets.

[0010] Compared with the prior art, the beneficial effects of this utility model are: In this invention, the symmetrical arc-shaped grooves of clamps A and B are consistent with the outer arc of the measuring pipeline. Multiple locking bolts are inserted through the corresponding locking bolt holes to clamp the pipeline, ensuring a tight fit between the pipeline and the clamps. The triangular annular anti-slip texture on the inner wall of the arc-shaped groove can enhance the clamping force and reduce the loosening and displacement of the clamps caused by the vibration of large flow fluid. In this invention, the sensor is precisely fixed by the bottom through hole and the parallel threaded hole of the clamp A, which avoids sensor position displacement, ensures the relative position stability of the piezoelectric element and the measuring pipeline, reduces the deviation of the ultrasonic wave propagation path, and improves the accuracy of flow measurement. In this invention, the circular mounting groove of the sensor is adapted to the outer diameter of the piezoelectric element, and the outer surface of the piezoelectric element is flush with the side of the sensor to ensure effective contact with the measuring pipeline. A cylindrical buffer pad fits against the inner surface of the piezoelectric element and the inner wall of the groove bottom, buffering the impact of fluid vibration on the piezoelectric element and reducing signal transmission loss. An annular clamping member secures the piezoelectric element with a threaded connection, preventing it from falling off during long-term use, significantly improving the stability of signal acquisition and extending the service life of the piezoelectric element. In this utility model, the first protective shell and the second protective shell symmetrically cover clamp A, clamp B and sensor, and are fixed by multiple bolts to form a closed protective space to prevent external dust and moisture from entering; the circular mounting hole of the first protective shell is adapted to the outer diameter of the electrical interface, and the protruding structure of the electrical interface enhances the sealing at the interface and protects the internal wires and circuit board. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2 This utility model Figure 1 A schematic diagram of the internal structure.

[0013] Figure 3 This utility model Figure 2 Enlarged view of the local structure at point C.

[0014] In the diagram: 1-Clamp A, 2-Electrical interface, 3-Measuring pipeline, 4-Clamp B, 5-Sensor, 6-LED screen, 7-Locking bolt hole, 8-First protective shell, 9-Second protective shell, 10-Clamping component, 11-Buffer pad, 12-Piezoelectric sheet. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-3In this embodiment of the utility model, an integrated high-flow external clamp-on flow meter includes clamp A1, electrical interface 2, measuring pipeline 3, clamp B4, sensor 5, LED screen 6, locking bolt holes 7, first protective shell 8, second protective shell 9, clamping element 10, buffer pad 11, and piezoelectric sheet 12. Clamp A1 and clamp B4 are symmetrically arranged, with arc-shaped grooves on opposite sides to accommodate the measuring pipeline 3, the arc of which matches the outer arc of the measuring pipeline 3. Multiple locking bolt holes 7 are provided, with multiple bolts passing through corresponding holes to clamp both components. The measuring pipeline 3 is embedded in the arc-shaped groove. Two parallel threaded holes are opened in the middle of the upper surface of clamp A1. Two through holes are correspondingly opened at the bottom of sensor 5, with two bolts passing through the through holes and screwed into the threaded holes to fix sensor 5. The first protective shell 8 is above clamp A1, and the second protective shell 9 is below clamp B4. Electrical interface 2 is fixed to the middle of the right side wall of the first protective shell 8, with internal wires connected to the signal output terminal of sensor 5. The screen 6 is embedded in the center of the front of the first protective shell 8, and the back wires are connected to the circuit board of the sensor 5. The first protective shell 8 covers the upper surface of clamp A1 and the upper part of sensor 5. The second protective shell 9 is symmetrical to the first protective shell 8, with its opening facing upwards and covering the lower surface of clamp B4. Multiple bolts are screwed into the bolt holes of the first protective shell 8 through the through holes of the second protective shell 9 for fixing. The first protective shell 8 has a circular mounting hole corresponding to the electrical interface 2, with the inner diameter of the hole matching the outer diameter of the interface.

[0017] By adopting the above technical solution, the symmetrical arc grooves of clamps A1 and B4 are consistent with the outer arc of the measuring pipeline 3. Multiple locking bolts are inserted through the corresponding locking bolt holes 7 to clamp the pipeline and ensure that the pipeline and clamps fit tightly. The triangular ring anti-slip texture on the inner wall of the arc groove can enhance the biting force and reduce the clamp loosening and displacement caused by the vibration of large flow fluid.

[0018] In this embodiment, the sensor 5 has a circular mounting groove in the middle of its side facing the measuring pipe 3, and the inner diameter of the groove is adapted to the outer diameter of the piezoelectric sheet 12. The piezoelectric sheet 12 is a circular sheet that is embedded in the groove and its outer side is flush with the side of the sensor 5. The buffer pad 11 is a cylindrical elastic element with the same diameter as the piezoelectric sheet 12. One side is attached to the inner side of the piezoelectric sheet 12, and the other side is attached to the inner wall of the groove bottom. The clamping element 10 is a ring-shaped metal part with an inner diameter adapted to the piezoelectric sheet 12 and an outer diameter larger than the inner diameter of the groove. The inner wall thread is screwed on in conjunction with the outer wall thread of the groove, and one end face is fixed against the edge of the piezoelectric sheet 12. In this embodiment, the inner walls of the arc-shaped grooves of clamps A1 and B4 are both provided with triangular annular anti-slip patterns; By adopting the above technical solution, the sensor 5 is precisely fixed through the bottom through hole and the parallel threaded hole of the clamp A1, which avoids the position of the sensor 5 from shifting, ensures the relative position stability of the piezoelectric sheet 12 and the measuring pipe 3, reduces the deviation of the ultrasonic wave propagation path, and improves the accuracy of flow measurement.

[0019] Furthermore, the circular mounting groove of sensor 5 is adapted to the outer diameter of piezoelectric element 12, and the outer surface of piezoelectric element 12 is flush with the side of sensor 5, ensuring effective contact with the measuring pipeline 3; the cylindrical buffer pad 11 fits against the inner surface of piezoelectric element 12 and the inner wall of the groove bottom, which can buffer the impact of fluid vibration on piezoelectric element 12, reduce signal transmission loss, and the annular clamping member 10 fixes piezoelectric element 12 with threaded engagement to prevent it from falling off during long-term use, significantly improving the stability of signal acquisition and the service life of piezoelectric element 12. The electrical interface 2 is a cylindrical metal connector with a protrusion diameter larger than the inner diameter of the mounting hole of the first protective shell 8; In this embodiment, the LED screen 6 is a rectangular LCD panel, and the first protective shell 8 has an adapter opening in the center of the front, so that the screen is embedded and flush with the front; the back of the screen is connected to a rectangular circuit board, and the board is connected to the signal output terminal of the sensor 5 through four wires; the inner wall of the first protective shell 8 is provided with four L-shaped metal brackets. By adopting the above technical solution, the first protective shell 8 and the second protective shell 9 symmetrically cover the clamps A1, B4 and the sensor 5, and are fixed by multiple bolts to form a closed protective space to block external dust and moisture from entering; the circular mounting hole of the first protective shell 8 is adapted to the outer diameter of the electrical interface 2, and in conjunction with the protruding structure of the electrical interface 2, the sealing at the interface is enhanced, protecting the internal wires and circuit board.

[0020] The working principle of this utility model is as follows: the upper and lower parts of clamp A1 and clamp B4 are clamped to the measuring pipe 3 through four holes corresponding to the measuring range by four reduction bolts. After clamping, the sensor 5 is connected to clamp A1 by two clamping bolts. An elastic buffer pad 11 matching layer is installed at the rear end of the piezoelectric element 12 to improve the propagation efficiency of ultrasonic waves to the contact surface of the sensor mounting plate. An ultrasonic flow meter measures the time it takes for an ultrasonic signal to travel from ① to ②. As the flow rate increases, the time it takes for the signal to travel from ① to ② will be shortened, thus accelerating the signal. By observing the relationship between the flow time and the flow rate, the ultrasonic flow meter can monitor the fluid in real time.

[0021] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An integrated high-flow external clamp-on flow meter, characterized by: Includes clamp A (1), electrical interface (2), measuring tubing (3), clamp B (4), sensor (5), LED The screen (6), locking bolt holes (7), first protective shell (8), second protective shell (9), clamping part (10), buffer pad (11) and piezoelectric sheet (12); the clamps A (1) and B (4) are symmetrically arranged, with arc-shaped grooves adapted to the measuring pipe (3) on opposite sides, the arc of the grooves being consistent with the outer arc of the measuring pipe (3); multiple locking bolt holes (7) are provided, with multiple bolts passing through the corresponding holes to clamp the two, the measuring pipe (3) is embedded in the arc-shaped groove, and two parallel threaded holes are opened in the middle of the upper surface of the clamps A (1); two through holes are opened at the bottom of the sensor (5), and two bolts are screwed into the threaded holes to fix the sensor (5); the first protective shell (8) is above the clamps A (1), and the second protective shell (9) is below the clamps B (4); the electrical interface (2) is fixed in the middle of the right side wall of the first protective shell (8), and the internal wires are connected to the signal output terminal of the sensor (5); LED The screen (6) is embedded in the center of the front of the first protective shell (8), and the back wire is connected to the circuit board of the sensor (5).

2. The one-piece, high-flow, external clamp-on flow meter of claim 1, wherein: The first protective shell (8) covers the upper surface of clamp A (1) and the upper part of sensor (5). The second protective shell (9) is symmetrical to the first protective shell (8) and covers the lower surface of clamp B (4) with its opening facing upward. Multiple bolts are screwed into the bolt holes of the first protective shell (8) through the through holes of the second protective shell (9) for fixing. The first protective shell (8) has a circular mounting hole corresponding to the electrical interface (2), and the inner diameter of the hole is adapted to the outer diameter of the interface.

3. The integrated high-flow-rate clamp-on flow meter according to claim 1, characterized in that: The sensor (5) has a circular mounting groove in the middle of the side facing the measuring pipe (3), and the inner diameter of the groove is adapted to the outer diameter of the piezoelectric sheet (12). The piezoelectric sheet (12) is a circular sheet, which is embedded in the groove and its outer side is flush with the side of the sensor (5). The buffer pad (11) is a cylindrical elastic element with the same diameter as the piezoelectric sheet (12). One side is attached to the inner side of the piezoelectric sheet (12), and the other side is attached to the inner wall of the groove bottom. The clamping part (10) is a ring-shaped metal part with an inner diameter adapted to the piezoelectric sheet (12) and an outer diameter greater than the inner diameter of the groove. The inner wall thread is screwed on in conjunction with the outer wall thread of the groove, and one end face is fixed against the edge of the piezoelectric sheet (12).

4. The integrated high-flow-rate clamp-on flow meter according to claim 3, characterized in that: The inner walls of the arc-shaped grooves of clamps A (1) and clamps B (4) are provided with triangular annular anti-slip patterns.

5. The one-piece, high-flow, external clamp-on flow meter of claim 4, wherein: The electrical interface (2) is a cylindrical metal connector with a protrusion diameter larger than the inner diameter of the mounting hole of the first protective shell (8).

6. A one-piece, high-flow, external clamp-on flow meter according to claim 5, wherein: The LED screen (6) is a rectangular LCD panel. The first protective shell (8) has an adapter opening in the center of the front, and the screen is embedded and flush with the front. The back of the screen is connected to a rectangular circuit board, and the board is connected to the signal output terminal of the sensor (5) through four wires. The inner wall of the first protective shell (8) is provided with four L-shaped metal brackets.

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