Testing device for ultrasonic transducer

Abstract

The utility model relates to the technical field of ultrasonic transducer detection devices, in particular to an ultrasonic transducer testing device which comprises a shell and an adjusting assembly. Two symmetrically arranged mounting holes are formed in the top of the shell; the adjusting assembly comprises a movable cylinder and an adjusting rod; the movable cylinder is rotationally connected into the mounting hole through a connecting shaft; the movable cylinder and the mounting hole are hermetically connected through a silica gel layer; a fixed baffle is arranged in the movable cylinder; a plug is arranged at the tail part of the movable cylinder; the adjusting rod is arranged at the middle point of the two mounting holes; the adjusting rod comprises a vertically arranged fixed rod and two adjusting cross rods; a double-end motor is arranged on the fixing rod; the double-end motor is connected with a first threaded rod and a second threaded rod. The ends of the two adjusting cross rods are hinged to the outer wall of the movable cylinder, the transducer can be directly replaced in the movable cylinder, the shell does not need to be opened, and the replacement process is simplified.

Description

Technical Field

[0001] This utility model relates to the technical field of ultrasonic transducer testing devices, and in particular to a testing device for ultrasonic transducers. Background Technology

[0002] As a key component of ultrasonic gas flow meters, the performance of ultrasonic transducers directly affects the accuracy of flow measurement. They can be mainly classified into piezoelectric, magnetostrictive, and electromagnetic types. Among them, piezoelectric transducers, with their high electroacoustic conversion efficiency and high receiving sensitivity, are currently the most widely used. Chinese Patent Publication No. CN216433189U discloses an ultrasonic transducer performance testing device. Firstly, by setting inlet and outlet pipes connected to the cavity at opposite ends of the housing, a unidirectional flow channel for the medium can be formed within the testing device. This allows for testing the performance of the ultrasonic transducer under flow conditions, resulting in more accurate test results. Furthermore, a reflector is installed within the cavity, ensuring greater consistency between the signals from the first and second ultrasonic transducers, further improving the accuracy of the test results. The device also allows for testing the influence of the ultrasonic transducer's installation angle on the signal by rotating the mounting base.

[0003] Then, in this testing device, the replacement of the transducer requires first removing the side cover on the side of the housing, replacing and modifying the internal structure of the housing, and then installing the side cover. This process may cause leakage at the connection between the housing and the side cover. In addition, the side cover must be opened every time the transducer is replaced, which is cumbersome. When testing the performance of the ultrasonic transducer under flow conditions, it is necessary to continuously fill the housing with gas and then let it flow out from the outlet, which can easily lead to waste of resources. Utility Model Content

[0004] The purpose of this application is to provide a testing device for ultrasonic transducers, which aims to solve the problems in the prior art.

[0005] This application provides an ultrasonic transducer testing device, including a housing and an adjustment assembly. The housing has an inlet pipe and an outlet pipe on its two sides. The outlet pipe is connected back to the inlet pipe via a connecting pipe. A circulation pump is mounted on the connecting pipe. The top of the housing has two symmetrically arranged mounting holes. The adjustment assembly includes a movable cylinder and an adjustment rod. The movable cylinder is rotatably connected to the mounting holes via a connecting shaft. The movable cylinder and the mounting holes are sealed together by a silicone layer. A fixed baffle is provided inside the movable cylinder. A rubber protective layer is provided on the inner ring of the fixed baffle. A plug is provided at the tail of the movable cylinder. The adjustment rod is located at the midpoint of the two mounting holes. The adjustment rod includes a vertically arranged fixed rod and two adjusting crossbars. A double-headed motor is mounted on the fixed rod. A first threaded rod and a second threaded rod are connected to the double-headed motor. The ends of the two adjusting crossbars are hinged to the outer wall of the movable cylinder.

[0006] Furthermore, a reflector is provided inside the housing; a lifting rod is provided at the bottom of the reflector; and a transparent observation window is provided on the front of the housing.

[0007] Furthermore, two connecting shafts are provided on the outer surface of the movable cylinder; the two connecting shafts are respectively symmetrically installed on the outer side of the movable cylinder.

[0008] Furthermore, the plug is fixedly connected to the movable cylinder by threads; the plug has a connecting hole at its center; and a silicone sealing ring is provided on the inner wall of the connecting hole.

[0009] Furthermore, the first threaded rod and the second threaded rod are respectively provided with a forward thread and a directional thread; the two adjusting crossbars are respectively rotatably sleeved on the first threaded rod and the second threaded rod.

[0010] Furthermore, the air intake pipe is equipped with an air intake valve; the air outlet pipe is equipped with an air outlet valve.

[0011] The beneficial effects of this utility model are as follows: This utility model forms a flow loop through a circulating pump and connecting pipe. When testing the performance of the ultrasonic transducer under flow conditions, only one gas filling is required, which can save gas resources used in the test and avoid waste. At the same time, the setting of adjustment components and movable cylinder allows the transducer to be replaced directly in the movable cylinder without opening the shell, simplifying the replacement process, reducing the impact of transducer replacement on the internal sealing of the shell, and ensuring the sealing of the shell as much as possible. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the present utility model.

[0013] Figure 2 This is a schematic diagram of the shell and circulation pipe structure in this utility model.

[0014] Figure 3 This is a schematic diagram of the movable cylinder structure.

[0015] Figure 4 A schematic diagram of the adjustment component structure.

[0016] In the picture:

[0017] 1. Housing; 11. Inlet pipe; 12. Outlet pipe; 13. Connecting pipe; 14. Inlet valve; 15. Outlet valve; 16. Mounting hole; 17. Observation window; 2. Movable cylinder; 21. Plug; 211. Connecting hole; 22. Connecting shaft; 23. Fixed baffle; 24. Rubber protective layer; 3. Fixed rod; 4. Adjusting crossbar; 5. Double-headed motor; 51. First threaded rod; 52. Second threaded rod; 6. Reflector; 61. Lifting rod; 7. Circulation pump. Detailed Implementation

[0018] 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.

[0019] like Figures 1 to 4 The device shown is for testing ultrasonic transducers and includes a housing 1 and an adjustment assembly. An air inlet pipe 11 and an air outlet pipe 12 are respectively provided on both sides of the housing 1. The air outlet pipe 12 is connected back to the air inlet pipe 11 through a connecting pipe 13. A circulation pump 7 is provided on the connecting pipe 13. The circulation pump 7 and the connecting pipe 13 form a loop to circulate the gas filled into the housing 1, forming a flowing airflow. Only one gas filling is required, which can save gas resources used for testing and avoid waste.

[0020] The top of the housing 1 has two symmetrically arranged mounting holes 16; the adjustment assembly includes a movable cylinder 2 and an adjustment rod; the movable cylinder 2 is rotatably connected to the mounting holes 16 via a connecting shaft 22, allowing the movable cylinder 2 to rotate relative to the mounting holes 16 to achieve angle adjustment; the movable cylinder 2 and the mounting holes 16 are sealed together by a silicone layer, which serves both a sealing function and utilizes the elasticity of the silicone layer to prevent obstruction of the rotation of the movable cylinder 2; a fixed baffle 23 is provided inside the movable cylinder 2; the inner ring of the fixed baffle 23 is provided with a rubber anti-reflective material. Protective layer 24; the surface of the rubber protective layer 24 can be threaded for easy connection. The end of the movable cylinder 2 is provided with a plug 21. The movable cylinder 2 is used to place the transducer. The fixed baffle 23 and the rubber protective layer 24 can fix and hold the transducer placed in the movable cylinder 2, preventing the transducer from slipping in the movable cylinder 2, and at the same time playing a certain sealing role. Then, the connecting wire of the transducer extends out from the connecting hole and the plug 21 is fixed to the end of the movable cylinder 2, so that the transducer is completely fixed in the movable cylinder 2. The transducer can be replaced directly in the movable cylinder 2 without opening the housing 1.

[0021] The adjusting rod is located at the midpoint of the two mounting holes 16; the adjusting rod includes a vertically arranged fixed rod 3 and two adjusting crossbars 4; a double-headed motor 5 is provided on the fixed rod 3; a first threaded rod 51 and a second threaded rod 52 are respectively connected to the double-headed motor 5; the ends of the two adjusting crossbars 4 are hinged to the outer wall of the movable cylinder 2.

[0022] The housing 1 is also equipped with a reflector 6; the bottom of the reflector 6 is equipped with a lifting rod 61, which can be an electric push rod to facilitate the adjustment of the height of the reflector 6 according to the angle change of the movable cylinder 2; the front of the housing 1 is equipped with a transparent observation window 17 to facilitate the observation of the adjustment of the reflector 6.

[0023] Two connecting shafts 22 are provided on the outer surface of the movable cylinder 2; the two connecting shafts 22 are respectively symmetrically installed on the outer side of the movable cylinder 2.

[0024] The plug 21 is fixedly connected to the movable cylinder 2 by threads; the plug 21 has a connecting hole 211 in the center; a silicone sealing ring is provided on the inner wall of the connecting hole 211, the connecting hole 211 is used to place the connecting wire of the transducer, and the silicone sealing ring can further ensure the overall sealing of the shell.

[0025] The first threaded rod 51 and the second threaded rod 52 are respectively provided with a forward thread and a directional thread; the two adjusting crossbars 4 are respectively rotatably sleeved on the first threaded rod 51 and the second threaded rod 52, so that the adjusting crossbars 4 move in extension and retraction relative to the threaded rods, which is a conventional telescopic rod connection form; when the dual-head motor 5 is started, the first threaded rod 51 and the second threaded rod 52 rotate, so that the adjusting crossbars 4 expand outwards to both sides or retract inwards synchronously, thereby controlling the movable cylinder 2 to rotate around the universal wheel, and ensuring that the two movable cylinders 2 rotate at the same angle, thus improving the test accuracy.

[0026] An air intake valve 14 is provided on the air intake pipe 11; an air outlet valve 15 is provided on the air outlet pipe 12.

[0027] 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.

Claims

1. A testing device for ultrasonic transducers, characterized in that, The device includes a housing and an adjustment assembly. The housing has an inlet pipe and an outlet pipe on each side. The outlet pipe is connected back to the inlet pipe via a connecting pipe. A circulation pump is mounted on the connecting pipe. The top of the housing has two symmetrically arranged mounting holes. The adjustment assembly includes a movable cylinder and an adjustment rod. The movable cylinder is rotatably connected to the mounting holes via a connecting shaft. The movable cylinder and the mounting holes are sealed together with a silicone layer. A fixed baffle is located inside the movable cylinder. A rubber protective layer is provided on the inner ring of the fixed baffle. A plug is provided at the tail of the movable cylinder. The adjustment rod is located at the midpoint of the two mounting holes. The adjustment rod includes a vertically arranged fixed rod and two adjusting crossbars. A double-headed motor is mounted on the fixed rod. A first threaded rod and a second threaded rod are connected to the double-headed motor. The ends of the two adjusting crossbars are hinged to the outer wall of the movable cylinder.

2. The ultrasonic transducer testing device according to claim 1, characterized in that, The housing also includes a reflector; a lifting rod is located at the bottom of the reflector; and a transparent observation window is located on the front of the housing.

3. The ultrasonic transducer testing device according to claim 1, characterized in that, Two connecting shafts are provided on the outer surface of the movable cylinder; the two connecting shafts are respectively symmetrically installed on the outer side of the movable cylinder.

4. The ultrasonic transducer testing device according to claim 3, characterized in that, The plug is fixedly connected to the movable cylinder by threads; the plug has a connecting hole at its center; and a silicone sealing ring is provided on the inner wall of the connecting hole.

5. The ultrasonic transducer testing device according to claim 1, characterized in that, The first threaded rod and the second threaded rod are respectively provided with a forward thread and a directional thread; the two adjusting crossbars are respectively rotatably sleeved on the first threaded rod and the second threaded rod.

6. The testing apparatus for ultrasonic transducers according to claim 1, characterized in that, The air intake pipe is equipped with an air intake valve; the air outlet pipe is equipped with an air outlet valve.

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