Novel ultrasonic gas meter plastic pipe section structure and method

Abstract

The invention relates to a novel ultrasonic gas meter plastic pipe section structure and method, and belongs to the technical field of ultrasonic flow measurement. According to the technical scheme, an annular buckle cover is buckled on a first ultrasonic transducer and a second ultrasonic transducer, a clamping ring pressing face (G) is pressed on the top faces (H) of the first ultrasonic transducer and the second ultrasonic transducer, a clamping hook on the outer edge of an end opening of an installation base is matched with a clamping groove hole in the side wall of the annular buckle cover, the first ultrasonic transducer and the second ultrasonic transducer are pressed, and the first ultrasonic transducer and the second ultrasonic transducer are clamped. Meanwhile, a transducer sealing bulge (F) is flattened, the transducer sealing bulge (F) is in close contact with an annular pipeline sealing surface I (E), and a pipeline sealing surface II (Q) and a transducer sealing surface (P) are in contact and extruded to form a pressing structure, so that the sealing performance is ensured. According to the invention, the sealing performance of the runner is ensured, and the measurement precision and the assembly efficiency are improved; the integrated circuit board mounting positions are symmetrically arranged on the two sides of the gas meter measuring pipeline body, an integrated structure is adopted, the mounting mode is greatly simplified, and the assembling efficiency is improved.

Description

Technical Field

[0001] The invention relates to a novel ultrasonic gas meter plastic pipe section structure and method, which is used for measuring fluid flow rate and velocity and controlling flow medium, in particular gas measurement, and belongs to the technical field of ultrasonic flow measurement. Background Art

[0002] Ultrasonic gas meter is a new type of gas meter that is different from traditional mechanical diaphragm flowmeter and electronic diaphragm flowmeter. Its working principle is: the time difference method is used to measure the gas flow rate, that is, the difference in the speed of the ultrasonic signal when it propagates in the fluid in the downstream and upstream is measured to reflect the flow rate of the fluid; because the error caused by the time difference method with the change of fluid temperature is relatively small, and the flow accuracy is high, the ultrasonic time difference method is widely used to measure the fluid. The ultrasonic transducer of the ultrasonic gas meter in the prior art is installed on the mounting seat of the measuring pipe body through a gland or bolts, and the ultrasonic transducer forms a sealing structure with the measuring pipe body. For example: Chinese patent ZL2020231679715 is named "A detachable transducer suitable for pipeline sonar" and ZL2022209750944 is named "Measuring flow channel and gas meter". The existing technology has the problem that the assembly efficiency of the gas meter is low, and the bolts for installing the ultrasonic transducer may be loose. In addition, the integrated circuit board and the measuring pipe body in the prior art are arranged separately, which increases the volume of the instrument and increases the difficulty of assembly and installation. Summary of the invention

[0003] The purpose of the present invention is to provide a new type of ultrasonic gas meter plastic pipe section structure and method, in which an ultrasonic transducer is installed on a mounting seat of a measuring pipe body through a clamp ring and a hook, and forms a sealing structure with the measuring pipe body, thereby improving the gas sealing, measuring accuracy and assembly efficiency; integrated circuit board installation positions are symmetrically arranged on both sides of the measuring pipe body of the gas meter, and an integrated structure is adopted, which greatly simplifies the installation method, improves assembly efficiency, and solves the problems existing in the background technology.

[0004] The technical solution of the present invention is: A novel plastic pipe section structure of an ultrasonic gas meter comprises a measuring pipe body, an ultrasonic transducer 1 and an ultrasonic transducer 2, wherein the ultrasonic transducer 1 and the ultrasonic transducer 2 are arranged in pairs on respective mounting seats of the measuring pipe body; the special features thereof are as follows: the mounting seat port of the measuring pipe body is an annular pipe sealing surface 1, and the corresponding positions of the ultrasonic transducer 1 and the ultrasonic transducer 2 are provided with an annular transducer sealing protrusion, which is made of rubber material and matches the pipe sealing surface 1; the mounting seat inner cavity of the measuring pipe body is a circular pipe sealing surface 2, and the corresponding positions of the ultrasonic transducer 1 and the ultrasonic transducer 2 are provided with transducer sealing surfaces, which are made of rubber material and match the pipe sealing surface 2; the mounting seat port is provided with an outer edge of the mounting seat port, and at least two protruding hooks are arranged on the outer edge of the mounting seat port; the ultrasonic transducer 1 and the ultrasonic transducer 2 are respectively connected by a transducer clamp ring 1 and a transducer clamp ring 2 Installed on respective mounting seats of the measuring pipeline body, the transducer clamping ring 1 and the transducer clamping ring 2 are annular buckle covers with the same structure, the clamping ring pressing surface is between the top inner ring and the outer ring of the annular buckle cover, the bottom of the side wall of the annular buckle cover is bent inwardly, the clamping ring pressing surface and the side wall bent inwardly at the bottom together form an annular buckle cover slide groove, at least two slot holes are provided on the side wall of the annular buckle cover, and the slot holes match the hooks on the outer edge of the mounting seat port; the annular buckle cover is buckled on the ultrasonic transducer 1 and the ultrasonic transducer 2, the clamping ring pressing surface is pressed on the top surface of the ultrasonic transducer 1 and the ultrasonic transducer 2, the hooks on the outer edge of the mounting seat port match the slot holes on the side wall of the annular buckle cover, the ultrasonic transducer 1 and the ultrasonic transducer 2 are pressed, and the transducer sealing protrusion is flattened at the same time, the annular transducer sealing protrusion is in close contact with the annular pipeline sealing surface 1, and the pipeline sealing surface 2 and the transducer sealing surface are contacted and extruded to form a pressing structure to ensure the sealing performance.

[0005] The curvature of the bottom of the annular buckle cover sliding groove matches the outer edge of the mounting seat port, ensuring that the annular buckle cover sliding groove slides into the outer edge of the mounting seat port.

[0006] The clamping surface of the ring between the inner ring and the outer ring at the top of the annular buckle cover is a complete ring, which is completely pressed with the annular top surface of the ultrasonic transducer 1 and the ultrasonic transducer 2; the side wall of the annular buckle cover is a complete ring, and the annular buckle cover slide groove formed is a complete ring, and the annular buckle cover slide groove surrounds the outer edge of the mounting seat port. The above structure is suitable for a large installation space around the mounting seat port, for example: the mounting seat is vertically arranged on the measuring pipe body.

[0007] The clamping surface of the snap ring between the inner ring and the outer ring at the top of the annular buckle cover is a complete annular shape, which is completely pressed with the annular top surface of ultrasonic transducer 1 and ultrasonic transducer 2; the side wall of the annular buckle cover is a semi-circular shape exceeding a semicircle, and the slide groove of the annular buckle cover is a semi-circular shape exceeding a semicircle. The annular buckle cover is pushed into the sliding installation from one side of the outer edge of the mounting seat port by using the opening of the semi-circular slide. After the slot hole on the side wall of the annular buckle cover matches the hook on the outer edge of the mounting seat port during the sliding process, the installation can be completed. The above structure is suitable for a small installation space around the mounting seat port, for example: the mounting seat is tilted on the measuring pipe body.

[0008] The annular buckle cover is an open U-shaped buckle cover with an area larger than half a circle, the clamping surface between the inner ring and the outer ring at the top of the annular buckle cover is a semicircular shape larger than half a circle, the side wall of the annular buckle cover is a semicircular shape larger than half a circle, and the annular buckle cover slide groove is a semicircular shape larger than half a circle. The annular buckle cover is pushed into the sliding installation from one side of the outer edge of the mounting seat port by using the semicircular opening of the slideway. After the clamping slot hole on the side wall of the annular buckle cover matches the clamping hook on the outer edge of the mounting seat port during the sliding process, the installation can be completed. The above structure is suitable for a small installation space around the mounting seat port, for example: the mounting seat is tilted on the measuring pipe body.

[0009] The mounting seat is arranged obliquely on the measuring pipe body, and the first ultrasonic transducer and the second ultrasonic transducer form a V-shaped reflection structure in the measuring pipe body.

[0010] Two protruding hooks are arranged on the outer edge of the mounting seat port, namely hook 1 and hook 2; two slot holes are arranged on the side wall of the annular buckle cover, namely slot hole 1 and slot hole 2, hook 1 matches slot hole 1, and hook 2 matches slot hole 2.

[0011] The two sides of the measuring pipe body are symmetrically provided with an integrated circuit installation groove 1 and an integrated circuit installation groove 2 for installing the integrated circuit board. This structure is an integrated structure. A closed environment is formed around the integrated circuit installation groove 1 and the integrated circuit installation groove 2, and the integrated circuit board is assembled by glue sealing.

[0012] The invention discloses an assembling method of a novel ultrasonic gas meter plastic pipe section structure. The method comprises the following steps: installing ultrasonic transducer 1 and ultrasonic transducer 2 on respective mounting seats of a measuring pipe body, and forming a V-shaped reflection structure in the measuring pipe body; buckling transducer clasp 1 and transducer clasp 2 on ultrasonic transducer 1 and ultrasonic transducer 2 respectively, pressing surfaces of the clasp 1 and ultrasonic transducer 2 on top surfaces of ultrasonic transducer 1 and ultrasonic transducer 2, matching the hook on the outer edge of the mounting seat port with the slot hole on the side wall of the annular buckle cover, pressing ultrasonic transducer 1 and ultrasonic transducer 2, flattening an annular transducer sealing protrusion at the same time, making the transducer sealing protrusion in close contact with an annular pipe sealing surface 1, and contacting and extruding the pipe sealing surface 2 and the transducer sealing surface to form a pressing structure, thereby ensuring sealing performance.

[0013] Beneficial effects of the present invention: the plastic pipe section structure of the novel ultrasonic gas meter is an integral injection molding, which saves manufacturing costs; ultrasonic transducer 1 and ultrasonic transducer 2 are clamped and crimped and sealed by transducer clamp ring 1 and transducer clamp ring 2, thereby ensuring the sealing performance of the flow channel and improving measurement accuracy and assembly efficiency; integrated circuit board installation positions are symmetrically arranged on both sides of the measuring pipeline body of the gas meter, and an integrated structure is adopted, which greatly simplifies the installation method and improves assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a top view of the measuring pipeline of the present invention; Figure 2 is an assembly cross-sectional view of the first embodiment of the present invention; Figure 3 is a stereogram of Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of a second integrated circuit mounting slot according to an embodiment of the present invention; Figure 5 is a schematic diagram of a ring-shaped buckle cover according to an embodiment of the present invention; Figure 6 is an enlarged cross-sectional view of a sealing structure of part I of embodiment 1 of the present invention; Figure 7 is a stereogram of Embodiment 2 of the present invention; In the figure: measuring pipe body 1, ultrasonic transducer 1, 2, transducer clamping ring 1, 3, transducer clamping ring 2, 4, ultrasonic transducer 2, 5, integrated circuit board 6, integrated circuit mounting groove 1, 7, integrated circuit mounting groove 2, 8, annular buckle cover slide groove 9, bend 10, outer edge of mounting seat port 11, pipe sealing surface 1E, transducer sealing protrusion F, hook 1A, hook 2B, slot hole 1A1, slot hole 2B1, clamping ring pressing surface G, top surface H, gas flow direction Z, pipe sealing surface 2Q, transducer sealing surface P. DETAILED DESCRIPTION

[0015] The present invention will be further described below by way of embodiments in conjunction with the accompanying drawings.

[0016] A novel plastic pipe section structure of an ultrasonic gas meter comprises a measuring pipe body 1, an ultrasonic transducer 2 and an ultrasonic transducer 5, wherein the ultrasonic transducer 2 and the ultrasonic transducer 5 are arranged in pairs on respective mounting seats of the measuring pipe body 1; the special features thereof are as follows: the mounting seat port of the measuring pipe body 1 is an annular pipe sealing surface 1E, an annular transducer sealing protrusion F is provided at the corresponding positions of the ultrasonic transducer 2 and the ultrasonic transducer 5, the transducer sealing protrusion F is made of rubber material and matches the pipe sealing surface 1E, the mounting seat inner cavity of the measuring pipe body 1 is a circular pipe sealing surface 2Q, the ultrasonic transducer 2 and the ultrasonic transducer 5 are provided at the corresponding positions of the transducer sealing surface P, the transducer sealing surface P is made of rubber material and matches the pipe sealing surface 2Q, the mounting seat port is provided with a mounting seat port outer edge 11, and at least two protruding hooks are provided on the mounting seat port outer edge 11; the ultrasonic transducer 2 and the ultrasonic transducer 5 are respectively connected by a transducer clamp ring 13 and a transducer clamp ring 2 4 is installed on the respective mounting seats of the measuring pipe body 1, the transducer clamping ring 1 3 and the transducer clamping ring 2 4 are annular buckle covers with the same structure, the top inner ring and the outer ring of the annular buckle cover are between the clamping ring pressing surface G, the bottom of the side wall of the annular buckle cover is bent inwardly 10, the clamping ring pressing surface G and the side wall bent inwardly at the bottom together form an annular buckle cover sliding groove 9, at least two clamping slot holes are provided on the side wall of the annular buckle cover, and the clamping slot holes match the clamping hooks on the outer edge 11 of the mounting seat port; the annular buckle cover is buckled on the ultrasonic transducer The ultrasonic transducer 1 2 and the ultrasonic transducer 2 5 are mounted on the ultrasonic transducer 1 2 and the ultrasonic transducer 2 5, the clamping surface G of the clamping ring is pressed on the top surface H of the ultrasonic transducer 1 2 and the ultrasonic transducer 2 5, the hook on the outer edge 11 of the mounting seat port matches the clamping slot hole on the side wall of the annular buckle cover, the ultrasonic transducer 1 2 and the ultrasonic transducer 2 5 are pressed, and the transducer sealing protrusion F is flattened at the same time, the annular transducer sealing protrusion F is in close contact with the annular pipe sealing surface 1 E, the pipe sealing surface 2 Q and the transducer sealing surface P are in contact and extruded to form a clamping structure to ensure the sealing performance.

[0017] The bend 10 at the bottom of the annular buckle cover slide groove 9 matches the outer edge 11 of the mounting seat port, ensuring that the annular buckle cover slide groove 9 slides into the outer edge 11 of the mounting seat port.

[0018] The clamping surface G between the inner ring and the outer ring at the top of the annular buckle cover is a complete annular shape, which is completely pressed with the annular top surface of the ultrasonic transducer 1 2 and the ultrasonic transducer 2 5; the side wall of the annular buckle cover is a complete annular shape, and the annular buckle cover slide groove 9 formed is a complete annular shape, and the annular buckle cover slide groove 9 surrounds the outer edge 11 of the mounting seat port. The above structure is suitable for a larger installation space around the mounting seat port, for example: the mounting seat is vertically arranged on the measuring pipe body 1.

[0019] Embodiment 1, refer to the attached Figure 1, 2 , 3, 4, 5, 6. The annular buckle cover is an open U-shaped buckle cover with an area larger than half a circle, the clamping surface G between the inner ring and the outer ring at the top of the annular buckle cover is a semicircular shape larger than half a circle, the side wall of the annular buckle cover is a semicircular shape larger than half a circle, and the annular buckle cover slide groove 9 is a semicircular shape larger than half a circle. The annular buckle cover is pushed into the sliding installation from one side of the outer edge 11 of the mounting seat port by using the semicircular opening of the slideway. After the clamping slot hole on the side wall of the annular buckle cover matches the clamping hook on the outer edge 11 of the mounting seat port during the sliding process, the installation can be completed. The above structure is suitable for a small installation space around the mounting seat port, for example: the mounting seat is tilted on the measuring pipe body 1.

[0020] Embodiment 2, refer to the attached Figure 1 , 7 The clamping surface G between the inner ring and the outer ring at the top of the annular buckle cover is a complete ring, which is completely pressed with the annular top surface of the ultrasonic transducer 1 2 and the ultrasonic transducer 2 5; the side wall of the annular buckle cover is a semi-circular shape exceeding a semicircle, and the annular buckle cover slide groove 9 formed is a semi-circular shape exceeding a semicircle. The annular buckle cover is pushed into the sliding installation from one side of the outer edge 11 of the mounting seat port by using the semi-circular opening of the slide. The installation is completed after the slot hole on the side wall of the annular buckle cover matches the hook on the outer edge 11 of the mounting seat port during the sliding process. The above structure is suitable for a small installation space around the mounting seat port, for example: the mounting seat is tilted on the measuring pipe body 1.

[0021] The ultrasonic transducer 1 2 and the ultrasonic transducer 2 5 are arranged in pairs on respective mounting seats of the measuring pipe body 1 , and the mounting seats are tilted on the measuring pipe body 1 . The ultrasonic transducer 1 2 and the ultrasonic transducer 2 5 form a V-shaped reflection structure in the measuring pipe body 1 .

[0022] Two protruding hooks are arranged on the outer edge 11 of the mounting seat port, namely hook 1 A and hook 2 B; two slot holes are arranged on the side wall of the annular buckle cover, namely slot hole 1 A1 and slot hole 2 B1, hook 1 A matches with slot hole 1 A1, and hook 2 B matches with slot hole 2 B1.

[0023] The measuring pipe body 1 is symmetrically provided with an integrated circuit installation groove 1 7 and an integrated circuit installation groove 2 8 for installing an integrated circuit board 6 on both sides. This structure is an integrated structure. A closed environment is formed around the integrated circuit installation groove 1 7 and the integrated circuit installation groove 2 8, and the integrated circuit board 6 is assembled by means of glue filling and sealing.

[0024] The invention discloses an assembly method of a novel ultrasonic gas meter plastic pipe section structure. The method comprises the following steps: installing an ultrasonic transducer 1 2 and an ultrasonic transducer 2 5 on respective mounting seats of a measuring pipe body 1, and forming a V-shaped reflection structure in the measuring pipe body 1; buckling a transducer clamping ring 1 3 and a transducer clamping ring 2 4 on the ultrasonic transducer 1 2 and the ultrasonic transducer 2 5 respectively, and pressing surfaces G of the clamping rings are pressed on the top surfaces H of the ultrasonic transducer 1 2 and the ultrasonic transducer 2 5; a hook on an outer edge 11 of a mounting seat port matches a clamping slot hole on a side wall of an annular buckle cover, and pressing the ultrasonic transducer 1 2 and the ultrasonic transducer 2 5; flattening an annular transducer sealing protrusion F at the same time; the transducer sealing protrusion F is in close contact with an annular pipe sealing surface 1 E; and the pipe sealing surface 2 Q and the transducer sealing surface P are in contact and extruded to form a pressing structure, thereby ensuring sealing performance.

[0025] The transducer sealing protrusion F has a certain compression amount to ensure the sealing performance.

Claims

1. A novel ultrasonic gas meter plastic pipe section structure, comprising a measuring pipe body (1), an ultrasonic transducer 1 (2) and an ultrasonic transducer 2 (5), wherein the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5) are arranged in pairs on respective mounting seats of the measuring pipe body (1); the characteristics are as follows: The mounting seat port of the measuring pipe body (1) is an annular pipe sealing surface 1 (E), and an annular transducer sealing protrusion (F) is provided at the corresponding positions of the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5). The transducer sealing protrusion (F) is made of rubber material and matches the pipe sealing surface 1 (E). The inner cavity of the mounting seat of the measuring pipe body (1) is a circular pipe sealing surface 2 (Q), and the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5) are provided at the corresponding positions of the transducer sealing surface ( P), the transducer sealing surface (P) is made of rubber material and matches the pipeline sealing surface 2 (Q), the mounting seat port is provided with a mounting seat port outer edge (11), and at least two protruding hooks are provided on the mounting seat port outer edge (11); the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5) are respectively mounted on the respective mounting seats of the measuring pipeline body (1) through the transducer clamping ring 1 (3) and the transducer clamping ring 2 (4), and the transducer clamping ring 1 (3) and the transducer clamping ring 2 (4) are structurally similar. The annular buckle cover has a snap ring pressing surface (G) between the top inner ring and the outer ring of the annular buckle cover, the bottom of the side wall of the annular buckle cover is bent inward (10), the snap ring pressing surface (G) and the side wall bent inward at the bottom together form an annular buckle cover slide groove (9), and at least two snap slot holes are provided on the side wall of the annular buckle cover, and the snap slot holes match the snap hooks on the outer edge (11) of the mounting seat port; the annular buckle cover is buckled on the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5), and the snap ring pressing surface (G) is pressed on On the top surface (H) of the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5), the hook on the outer edge (11) of the mounting seat port matches the slot hole on the side wall of the annular buckle cover, pressing the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5), and at the same time flattening the transducer sealing protrusion (F), the annular transducer sealing protrusion (F) is in close contact with the annular pipeline sealing surface 1 (E), and the pipeline sealing surface 2 (Q) and the transducer sealing surface (P) are in contact and extruded to form a pressing structure, thereby ensuring the sealing performance.

2. A novel ultrasonic gas meter plastic pipe section structure according to claim 1, characterized in that: The bend (10) at the bottom of the annular buckle cover slide groove (9) matches the outer edge (11) of the mounting seat port, ensuring that the annular buckle cover slide groove (9) slides into the outer edge (11) of the mounting seat port.

3. A novel ultrasonic gas meter plastic pipe section structure according to claim 2, characterized in that: The clamping surface (G) of the ring between the inner ring and the outer ring at the top of the ring buckle cover is completely ring-shaped and is completely pressed with the ring-shaped top surface of the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5); the side wall of the ring buckle cover is completely ring-shaped, and the ring buckle cover slide groove (9) formed is a complete ring, and the ring buckle cover slide groove (9) surrounds the outer edge (11) of the mounting seat port.

4. A novel ultrasonic gas meter plastic pipe section structure according to claim 2, characterized in that: The clamping surface (G) of the clamping ring between the inner ring and the outer ring at the top of the annular buckle cover is completely annular and is completely pressed with the annular top surface of the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5); the side wall of the annular buckle cover is semi-annular and exceeds the semicircle, and the formed annular buckle cover slide groove (9) is semi-annular and exceeds the semicircle. The annular buckle cover is pushed into the outer edge (11) of the mounting seat port from one side by using the opening of the semi-annular slide groove for sliding installation. The installation is completed after the clamping slot hole on the side wall of the annular buckle cover matches the clamping hook on the outer edge (11) of the mounting seat port during the sliding process.

5. The novel ultrasonic gas meter plastic pipe section structure according to claim 2 is characterized by: The annular buckle cover is an open U-shaped buckle cover with an area larger than half a circle. The clamping surface (G) between the inner ring and the outer ring at the top of the annular buckle cover is a semi-circular shape with an area larger than half a circle. The side wall of the annular buckle cover is a semi-circular shape with an area larger than half a circle. The annular buckle cover slide groove (9) is a semi-circular shape with an area larger than half a circle. The annular buckle cover is pushed into the outer edge (11) of the mounting seat port from one side of the semi-circular opening of the slide groove for sliding installation. The installation is completed after the slot hole on the side wall of the annular buckle cover matches the hook on the outer edge (11) of the mounting seat port during the sliding process.

6. A novel ultrasonic gas meter plastic pipe section structure according to claim 1 or 2, characterized in that: The mounting seat is arranged obliquely on the measuring pipe body (1), and the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5) form a V-shaped reflection structure in the measuring pipe body (1).

7. A novel ultrasonic gas meter plastic pipe section structure according to claim 1 or 2, characterized in that: An integrated circuit mounting groove (7) and an integrated circuit mounting groove (8) for mounting an integrated circuit board (6) are symmetrically arranged on both sides of the measuring pipe body (1). The structure is an integrated structure. A sealed environment is formed around the integrated circuit mounting groove (7) and the integrated circuit mounting groove (8). The integrated circuit board (6) is assembled by means of glue injection and sealing.

8. An assembly method of the novel ultrasonic gas meter plastic pipe section structure according to any one of claims 1 to 7, characterized in that: The ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5) are mounted on respective mounting seats of the measuring pipe body (1), and a V-shaped reflection structure is formed in the measuring pipe body (1); the transducer clamping ring 1 (3) and the transducer clamping ring 2 (4) are buckled on the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5) respectively, the clamping ring pressing surface (G) is pressed on the top surface (H) of the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5), the hook on the outer edge (11) of the mounting seat port matches the clamping slot hole on the side wall of the annular buckle cover, the ultrasonic transducer 1 (2) and the ultrasonic transducer 2 (5) are pressed, and the annular transducer sealing protrusion (F) is flattened at the same time, the transducer sealing protrusion (F) is in close contact with the annular pipe sealing surface 1 (E), and the pipe sealing surface 2 (Q) and the transducer sealing surface (P) are in contact and extruded to form a pressing structure, thereby ensuring the sealing performance.

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