A device for testing an ultrasonic transducer

Abstract

This application provides a testing device for an ultrasonic transducer. The testing device includes a base, a cylinder, multiple testing modules, and a pressure assembly. The cylinder is mounted on the base. Multiple testing channels are connected to the same inner cavity. The first end of the ultrasonic transducer under test is connected to the inner cavity. Multiple testing modules are all connected to the same cylinder and connected to the testing channels. The output end of a cylinder is connected to the pressure assembly, which drives the pressure assembly to press against the second end of the ultrasonic transducer under test, thereby pressurizing the ultrasonic transducer under test. A pressure inlet valve inputs nitrogen under the action of an external nitrogen source. The nitrogen flows in the inner cavity and acts on the ultrasonic transducer under test, so that the ultrasonic transducer under test can be tested under dynamic pressure. It makes full use of the detection of temperature transmitters and pressure transmitters, and can perform multiple tests at different pressures without the need for multiple disassembly and assembly, thus improving the versatility and convenience of the ultrasonic transducer testing device.

Description

Technical Field

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

[0002] With the development of technology, ultrasonic transducers are the main sensors of ultrasonic flow meters. The quality of their signals is the main basis for the ultrasonic flow meter to accurately measure gas media. There are many parameters of ultrasonic transducer signals that need to be detected, and the characteristics of ultrasonic transducer signals when they change with temperature and pressure are also the main indicators affecting the accuracy of ultrasonic flow meters. Ultrasonic transducer detection devices are used to detect the ultrasonic transducers to be tested.

[0003] In the existing technology, the existing ultrasonic transducer testing device includes a base, a cylinder and a testing module. The cylinder is connected to the base, the testing module is connected to the cylinder, and the ultrasonic transducer to be tested is connected to the cylinder. The testing module tests the ultrasonic transducer to be tested under static conditions. However, it cannot test the ultrasonic transducer to be tested under different pressures, resulting in poor versatility of the existing ultrasonic transducer testing device. Utility Model Content

[0004] The purpose of this invention is to provide a testing device for an ultrasonic transducer. A cylindrical body is mounted on a base. The cylindrical body has an inner cavity and multiple testing channels. These multiple testing channels are arranged vertically and communicate with the same inner cavity. The multiple testing channels are distributed at different positions within the cylindrical body. The first end of the cylindrical body is connected to the ultrasonic transducer to be tested, and the first end of the ultrasonic transducer to be tested is connected to the inner cavity. Multiple testing modules are all connected to the same cylindrical body and connected to corresponding testing channels. Each testing module includes a temperature transmitter, a pressure relief valve, a pressure inlet valve, and a pressure transmitter. The pressure-blocking assembly includes a cylinder and a pressure-blocking component, with the pressure-blocking component located on the outer side of the cylindrical body. The fixed end of the cylinder is connected to the base. The cylinder's output end is connected to the pressing component, which in turn presses against the second end of the ultrasonic transducer under test. This ensures the stability of the transducer's detection. Simultaneously, the pressure inlet valve supplies nitrogen from an external nitrogen source. The nitrogen flows within the cavity and acts on the transducer, allowing it to be tested under dynamic pressure. This fully utilizes the temperature and pressure transmitters, enabling multiple tests at different pressures. Furthermore, it eliminates the need for repeated disassembly and reassembly, improving the versatility and convenience of the ultrasonic transducer testing device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a detection device for an ultrasonic transducer; the detection device for the ultrasonic transducer includes:

[0006] Base;

[0007] A cylindrical body is installed on the base; the cylindrical body has an inner cavity and multiple detection channels; the multiple detection channels are arranged in the vertical direction and communicate with the same inner cavity; the multiple detection channels are distributed at different positions of the cylindrical body; the first end of the cylindrical body is connected to an ultrasonic transducer to be tested, and the first end of the ultrasonic transducer to be tested is connected to the inner cavity;

[0008] Multiple detection modules are connected to the same cylinder and docked with the corresponding detection channels; each detection module includes a temperature transmitter, a pressure relief valve, a pressure inlet valve, and a pressure transmitter.

[0009] The pressing assembly includes a cylinder and a pressing member, the pressing member being disposed on the outer side of the cylinder; the fixed end of the cylinder is connected to the base, the output end of the cylinder is connected to the pressing member, and drives the pressing member to press against the second end of the ultrasonic transducer to be tested.

[0010] Optionally, the pressure relief valve and the pressure inlet valve are both located near the middle of the cylinder and are arranged adjacent to each other; the pressure relief valve and the pressure inlet valve both act on the same cylinder and are arranged in parallel.

[0011] When the pressure relief valve is closed, the pressure inlet valve is open. The pressure inlet valve is connected to an external nitrogen source, which applies nitrogen to the inner cavity of the cylinder, thus pressurizing the ultrasonic transducer under test.

[0012] Optionally, the temperature transmitter is located on the left side of the pressure relief valve, and the temperature transmitter is connected to the corresponding detection channel in the vertical direction; the temperature transmitter is used to measure the temperature of nitrogen gas to determine the temperature parameters of the ultrasonic transducer under test.

[0013] The pressure transmitter is located on the right side of the pressure relief valve, and the pressure transmitter is connected to the corresponding detection channel in the vertical direction; the pressure transmitter is used to measure the pressure of nitrogen gas to determine the pressure parameters of the ultrasonic transducer under test.

[0014] Optionally, the inner cavity is arranged along the length of the cylinder and extends through the cylinder;

[0015] The first end of the cylinder is the right end of the cylinder. The first end of the cylinder is provided with a first connection hole. The connection end of the ultrasonic transducer to be tested is connected to the first connection hole and is sealed to the first connection hole.

[0016] The detection end of the ultrasonic transducer under test is located inside the connection end and is connected to the inner cavity of the cylinder.

[0017] Optionally, the ultrasonic transducer testing device further includes a sealing element, which is located inside the first connecting hole and sleeved on the inner wall of the first connecting hole and the connecting end of the ultrasonic transducer to be tested.

[0018] The seal is used to seal the connection between the connection end of the ultrasonic transducer under test and the first connection hole under pressure.

[0019] Optionally, the sealing element is a sealing gasket or a sealing ring.

[0020] Optionally, the second end of the cylinder is the left end of the cylinder, and the second end of the cylinder is provided with a second connecting hole for connecting a standard ultrasonic transducer;

[0021] A standard ultrasonic transducer and an ultrasonic transducer under test are disposed at the first and second ends of the cylinder, and the standard ultrasonic transducer and the ultrasonic transducer under test are on the same axis.

[0022] Optionally, the pressing member is arranged as a long rod, and the end of the pressing member opposite to the ultrasonic transducer to be tested is the pressing end;

[0023] The pressing member is provided with a clearance hole, which is recessed inward from the side wall of the pressing end and is used to avoid part of the structure of the ultrasonic transducer to be tested.

[0024] Optionally, the clearance hole is an annular hole, and part of the structure of the ultrasonic transducer under test is an annular structure.

[0025] Optionally, the base is flat, and the cylinder and the barrel are both mounted on the same base;

[0026] The axis of the cylinder, the axis of the pressing component, the axis of the ultrasonic transducer to be tested, and the axis of the cylinder are on the same axis.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] This utility model provides a testing device for an ultrasonic transducer. A cylindrical body is mounted on a base. The cylindrical body has an inner cavity and multiple testing channels. These multiple testing channels are arranged vertically and communicate with the same inner cavity. The multiple testing channels are distributed at different positions within the cylindrical body. The first end of the cylindrical body is connected to the ultrasonic transducer to be tested, and the first end of the ultrasonic transducer to be tested is connected to the inner cavity. Multiple testing modules are all connected to the same cylindrical body and connected to corresponding testing channels. Each testing module includes a temperature transmitter, a pressure relief valve, a pressure inlet valve, and a pressure transmitter. A pressure-blocking assembly includes a cylinder and a pressure-blocking component, with the pressure-blocking component located on the outer side of the cylindrical body. The fixed end of the cylinder is connected to the base. The output end is connected to the pressure member, which drives the pressure member to press against the second end of the ultrasonic transducer under test, thereby pressing the ultrasonic transducer under test and ensuring the detection stability of the ultrasonic transducer under test. At the same time, the pressure valve inputs nitrogen under the action of an external nitrogen gas source. The nitrogen flows in the inner cavity and acts on the ultrasonic transducer under test, so that the ultrasonic transducer under test can be detected under dynamic pressure. It makes full use of the detection of temperature transmitter and pressure transmitter, and can perform multiple tests at different pressures. At the same time, it does not require multiple disassembly and assembly, which improves the versatility and convenience of the ultrasonic transducer detection device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings. In the following description, the same reference numerals denote the same parts.

[0031] Figure 1 A schematic diagram of a detection device for an ultrasonic transducer according to an embodiment of this application is shown.

[0032] Figure 2 A schematic diagram of the detection module of a detection device for an ultrasonic transducer according to an embodiment of this application is shown.

[0033] Figure 3 A schematic diagram of the pressure assembly of a detection device for an ultrasonic transducer according to an embodiment of this application is shown.

[0034] Figure 4 A schematic diagram of the use state of a detection device for an ultrasonic transducer according to an embodiment of this application is shown.

[0035] Figure 5 It shows Figure 4 A magnified view of a portion of point A in the middle.

[0036] Figure Labels

[0037] 100. Detection device for ultrasonic transducers;

[0038] 10. Base;

[0039] 20. Cylinder body; 20a. Inner cavity; 20b. Detection flow channel; 20c. First connecting hole; 20d. Second connecting hole;

[0040] 30. Detection module; 31. Temperature transmitter; 32. Pressure relief valve; 33. Pressure inlet valve; 34. Pressure transmitter;

[0041] 40. Pressing assembly; 41. Cylinder; 42. Pressing component; 42a. Clearance hole;

[0042] 50. Sealing components;

[0043] 200. The ultrasonic transducer to be tested;

[0044] 300. Standard ultrasonic transducer. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0046] Please refer to the attached document. Figures 1-5 This application provides a testing device 100 for an ultrasonic transducer, which is used to test an ultrasonic transducer 200 under different pressures and temperatures.

[0047] Please refer to the attached document. Figures 1-5In this embodiment, the ultrasonic transducer testing device 100 includes a base 10, a cylinder 20, multiple testing modules 30, and a pressing assembly 40. The cylinder 20 is mounted on the base 10. The cylinder 20 has an inner cavity 20a and multiple testing channels 20b. The multiple testing channels 20b are arranged vertically and communicate with the same inner cavity 20a. The multiple testing channels 20b are distributed at different positions of the cylinder 20. The first end of the cylinder 20 is connected to the ultrasonic transducer 200 to be tested, and the first end of the ultrasonic transducer 200 to be tested is connected to the inner cavity 20a. The multiple testing modules 30 are all connected to the same cylinder 20 and are connected to the corresponding testing channels 20b. The testing module 30 includes a temperature transmitter 31, a pressure relief valve 32, a pressure inlet valve 33, and a pressure transmitter 34. The pressing assembly 40 includes a cylinder 41 and a pressing member 42, which presses against the pressure. The component 42 is located on the outside of the cylinder 20; the fixed end of the cylinder 41 is connected to the base 10, and the output end of the cylinder 41 is connected to the pressing component 42, which drives the pressing component 42 to press against the second end of the ultrasonic transducer 200 under test, thereby pressing against the ultrasonic transducer 200 under test and ensuring the detection stability of the ultrasonic transducer 200 under test. At the same time, the pressure valve 33 inputs nitrogen under the action of the external nitrogen source. The nitrogen flows in the inner cavity 20a and acts on the ultrasonic transducer 200 under test, so that the ultrasonic transducer 200 under test can be detected under dynamic pressure. The detection of the temperature transmitter 31 and the pressure transmitter 34 is fully utilized, and multiple tests at different pressures can be performed. At the same time, multiple disassembly and assembly are not required, which improves the versatility and convenience of the ultrasonic transducer detection device 100.

[0048] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the base 10 serves as a support component of the ultrasonic transducer detection device 100, and the base 10 is used to support the cylinder 20, multiple detection modules 30 and the pressure assembly 40.

[0049] The cylinder 20 is disposed on the upper side of the base 10 and is installed on the base 10 so that the cylinder 20 is fixed on the upper side of the base 10. The cylinder 20 has an inner cavity 20a and multiple detection channels 20b. The inner cavity 20a serves as the internal space of the cylinder 20 and is arranged along the left-right direction of the cylinder 20. The multiple detection channels 20b are arranged along the up-down direction and are connected to the same inner cavity 20a. The multiple detection channels 20b are distributed at different positions of the cylinder 20. The first end of the cylinder 20 is connected to the ultrasonic transducer 200 to be tested, and the first end of the ultrasonic transducer 200 to be tested is connected to the inner cavity 20a so that the ultrasonic transducer 200 to be tested is fixed to the first end of the cylinder 20.

[0050] Multiple detection modules 30 are arranged vertically, and all of them are connected to the same cylinder 20 and connected to the corresponding detection channels 20b, so that the multiple detection modules 30 can be fixed to the cylinder 20. The detection module 30 includes a temperature transmitter 31, a pressure relief valve 32, a pressure inlet valve 33 and a pressure transmitter 34. The temperature transmitter 31, the pressure relief valve 32, the pressure inlet valve 33 and the pressure transmitter 34 are connected to the cylinder 20 by means of threaded connection and are respectively connected to the corresponding detection channels 20b.

[0051] The pressing assembly 40 includes a cylinder 41 and a pressing member 42. The pressing member 42 is located on the outside of the cylinder 20. The fixed end of the cylinder 41 is connected to the base 10, and the output end of the cylinder 41 is connected to the pressing member 42 to adjust the position of the pressing member 42 relative to the base 10. The cylinder 41 drives the pressing member 42 to press against the second end of the ultrasonic transducer 200 under test, thereby pressing the ultrasonic transducer 200 under test and ensuring the detection stability of the ultrasonic transducer 200 under test. At the same time, the pressure valve 33 inputs nitrogen under the action of an external nitrogen source. The nitrogen flows in the inner cavity 20a and acts on the ultrasonic transducer 200 under test, so that the ultrasonic transducer 200 under test can be detected under dynamic pressure. It makes full use of the detection of the temperature transmitter 31 and the pressure transmitter 34, and can perform multiple tests at different pressures. At the same time, it does not require multiple disassembly and assembly, which improves the versatility and convenience of the ultrasonic transducer detection device 100.

[0052] Please refer to the attached document. Figures 1-5 In this embodiment, the pressure relief valve 32 and the pressure inlet valve 33 are both located near the middle of the cylinder 20 and are arranged adjacent to each other. The pressure relief valve 32 and the pressure inlet valve 33 both act on the same cylinder 20 and are arranged in parallel to facilitate pressure regulation at the same or similar points on the cylinder 20. At the same time, it is convenient for operators to monitor and control the pressure relief valve 32 and the pressure inlet valve 33 at the same time, thereby improving operating efficiency.

[0053] When the pressure relief valve 32 is closed, the pressure inlet valve 33 is open. The pressure inlet valve 33 is connected to an external nitrogen source. The external nitrogen source applies nitrogen to the inner cavity 20a of the cylinder 20, so that the ultrasonic transducer 200 under test is under pressure. This allows the ultrasonic transducer 200 to be tested under dynamic pressure, thus facilitating multiple tests of the ultrasonic transducer 200 under different pressures and improving the versatility of the ultrasonic transducer testing device 100.

[0054] When the pressure relief valve 32 is in the open state, the pressure inlet valve 33 is in the closed state, and the nitrogen gas in the inner cavity 20a of the cylinder 20 is discharged to the external environment, so that the ultrasonic transducer 200 under test is in a depressurization state.

[0055] Please refer to the attached document. Figures 1-2 4. In this embodiment, the temperature transmitter 31 is located on the left side of the pressure relief valve 32 so that the temperature transmitter 31 can make full use of the space on the left side of the pressure relief valve 32. The temperature transmitter 31 is connected to the corresponding detection channel 20b in the vertical direction. The temperature transmitter 31 is used to measure the temperature of nitrogen gas to determine the temperature parameters of the ultrasonic transducer 200 under test. This allows the operator to record the test temperature of various ultrasonic transducers 200 under test, thereby facilitating the detection of the ultrasonic transducer 200 under test at the same nitrogen gas temperature or different nitrogen gas temperatures.

[0056] The pressure transmitter 34 is located on the right side of the pressure relief valve 32, and the pressure transmitter 34 is connected to the corresponding detection channel 20b in the vertical direction. The pressure transmitter 34 is used to measure the pressure of nitrogen gas to determine the pressure parameters of the ultrasonic transducer 200 under test, so that the operator can record the test pressure of various ultrasonic transducers 200 under test, thereby facilitating the testing of the ultrasonic transducer 200 under test at the same pressure or at different pressures.

[0057] Please refer to the attached document. Figures 1-5 In this embodiment, the inner cavity 20a is arranged along the length of the cylinder 20 and penetrates the cylinder 20. The first end of the cylinder 20 serves as the right end of the cylinder 20. The first end of the cylinder 20 is provided with a first connecting hole 20c. The connecting end of the ultrasonic transducer 200 to be tested is connected to the first connecting hole 20c and is sealed to the first connecting hole 20c. This allows the ultrasonic transducer 200 to be sealed to the cylinder 20 through the first connecting hole 20c, ensuring a sealing effect between the ultrasonic transducer 200 to be tested and the cylinder 20. This prevents nitrogen from flowing to the external environment through the connection between the ultrasonic transducer 200 to be tested and the cylinder 20, thus preventing nitrogen leakage. The detection end of the ultrasonic transducer 200 to be tested is located inside the connecting end and is connected to the inner cavity 20a of the cylinder 20, so that nitrogen can come into contact with the detection end of the ultrasonic transducer 200 to apply pressure to the detection end of the ultrasonic transducer 200 to be tested.

[0058] Please refer to the attached document. Figures 1-5 In this embodiment, the ultrasonic transducer testing device 100 further includes a sealing element 50. The sealing element 50 is located inside the first connecting hole 20c and is sleeved on the inner wall of the first connecting hole 20c and the connecting end of the ultrasonic transducer 200 to be tested. Under the compression of the connecting end of the ultrasonic transducer 200 to be tested, the sealing element 50 seals the connecting end of the ultrasonic transducer 200 to be tested and the first connecting hole 20c, thereby achieving a sealing effect between the ultrasonic transducer 200 to be tested and the cylinder 20. Optionally, the sealing element 50 is a sealing gasket or a sealing ring.

[0059] Please refer to the attached document. Figures 1-5 In this embodiment, the second end of the cylinder 20 is the left end of the cylinder 20. The second end of the cylinder 20 is provided with a second connecting hole 20d, which is used to connect a standard ultrasonic transducer 300 so that the standard ultrasonic transducer 300 can be connected to the second end of the cylinder 20 through the second connecting hole 20d. The standard ultrasonic transducer 300 and the ultrasonic transducer 200 to be tested are disposed at the first end and the second end of the cylinder 20 so that the standard ultrasonic transducer 300 and the ultrasonic transducer 200 to be tested are arranged opposite to each other and are on the same axis.

[0060] Please refer to the attached document. Figures 1-5 In this embodiment, the pressing member 42 is arranged as a long rod, and the end of the pressing member 42 opposite to the ultrasonic transducer 200 to be tested is the pressing end. The pressing member 42 is provided with a relief hole 42a, which is recessed inward from the side wall of the pressing end and is used to avoid part of the structure of the ultrasonic transducer 200 to be tested. This allows the pressing member 42 to avoid part of the structure of the ultrasonic transducer 200 to be tested through the relief hole 42a, so that the pressing end can press against the ultrasonic transducer 200 to be tested, thus ensuring the expansion and contraction effect of the pressing member 42 relative to the ultrasonic transducer 200 to be tested.

[0061] Please refer to the attached document. Figures 1-5 In this embodiment of the application, the clearance hole 42a is an annular hole, and part of the structure of the ultrasonic transducer 200 to be tested is an annular structure, so that the inner contour of the clearance hole 42a can be matched with the outer contour of part of the structure of the ultrasonic transducer 200 to be tested, thereby facilitating the pressing member 42 to press against the end of the ultrasonic transducer 200 to be tested.

[0062] Please refer to the attached document. Figure 1 and 5 In this embodiment, the base 10 is flat, and the cylinder 41 and the cylinder 20 are both mounted on the same base 10. The axis of the cylinder 41, the axis of the pressing member 42, the axis of the ultrasonic transducer 200 to be tested, and the axis of the cylinder 20 are on the same axis, so that the cylinder 41, the pressing member 42, the ultrasonic transducer 200 to be tested, and the cylinder 20 are at the same horizontal height, ensuring the pressing effect of the pressing member 42 relative to the ultrasonic transducer 200 to be tested.

[0063] Compared with the prior art, the beneficial effects of this utility model are:

[0064] This utility model provides a testing device 100 for an ultrasonic transducer. A cylindrical body 20 is mounted on a base 10. The cylindrical body 20 has an inner cavity 20a and multiple testing channels 20b. The multiple testing channels 20b are arranged vertically and connected to the same inner cavity 20a. The multiple testing channels 20b are distributed at different positions on the cylindrical body 20. The first end of the cylindrical body 20 is connected to an ultrasonic transducer 200 to be tested, and the first end of the ultrasonic transducer 200 to be tested is connected to the inner cavity 20a. Multiple testing modules 30 are all connected to the same cylindrical body 20 and connected to corresponding testing channels 20b. The testing module 30 includes a temperature transmitter 31, a pressure relief valve 32, a pressure inlet valve 33, and a pressure transmitter 34. The pressure-relief assembly 40 includes a cylinder 41 and a pressure-relief component 42, the pressure-relief component 42 being disposed on the outer side of the cylindrical body 20. The fixed end of cylinder 41 is connected to base 10, and the output end of cylinder 41 is connected to pressing member 42, which drives pressing member 42 to press against the second end of the ultrasonic transducer 200 under test, thereby pressing the ultrasonic transducer 200 under test and ensuring the detection stability of the ultrasonic transducer 200 under test. At the same time, the pressure valve 33 inputs nitrogen under the action of an external nitrogen source. The nitrogen flows in the inner cavity 20a and acts on the ultrasonic transducer 200 under test, so that the ultrasonic transducer 200 under test can be detected under dynamic pressure. The detection of temperature transmitter 31 and pressure transmitter 34 is fully utilized, and multiple tests at different pressures can be performed. At the same time, multiple disassembly and assembly are not required, which improves the versatility and convenience of the ultrasonic transducer detection device 100.

[0065] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0066] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more features.

[0067] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A detection device for an ultrasonic transducer, characterized in that; The detection device for the ultrasonic transducer includes: Base; A cylindrical body is installed on the base; the cylindrical body has an inner cavity and multiple detection channels; the multiple detection channels are arranged in the vertical direction and communicate with the same inner cavity; the multiple detection channels are distributed at different positions of the cylindrical body; the first end of the cylindrical body is connected to an ultrasonic transducer to be tested, and the first end of the ultrasonic transducer to be tested is connected to the inner cavity; Multiple detection modules are connected to the same cylinder and docked with the corresponding detection channels; each detection module includes a temperature transmitter, a pressure relief valve, a pressure inlet valve, and a pressure transmitter. The pressing assembly includes a cylinder and a pressing member, the pressing member being disposed on the outer side of the cylinder; the fixed end of the cylinder is connected to the base, the output end of the cylinder is connected to the pressing member, and drives the pressing member to press against the second end of the ultrasonic transducer to be tested.

2. The detection device for an ultrasonic transducer according to claim 1, characterized in that, The pressure relief valve and the pressure inlet valve are both located near the middle of the cylinder and are arranged adjacent to each other; the pressure relief valve and the pressure inlet valve both act on the same cylinder and are arranged in parallel. When the pressure relief valve is closed, the pressure inlet valve is open. The pressure inlet valve is connected to an external nitrogen source, which applies nitrogen to the inner cavity of the cylinder, thus pressurizing the ultrasonic transducer under test.

3. The detection device for an ultrasonic transducer according to claim 2, characterized in that, The temperature transmitter is located on the left side of the pressure relief valve, and the temperature transmitter is connected to the corresponding detection channel in the vertical direction; the temperature transmitter is used to measure the temperature of nitrogen gas to determine the temperature parameters of the ultrasonic transducer under test. The pressure transmitter is located on the right side of the pressure relief valve, and the pressure transmitter is connected to the corresponding detection channel in the vertical direction; the pressure transmitter is used to measure the pressure of nitrogen gas to determine the pressure parameters of the ultrasonic transducer under test.

4. The detection device for an ultrasonic transducer according to claim 1, characterized in that, The inner cavity is arranged along the length of the cylinder and extends through the cylinder; The first end of the cylinder is the right end of the cylinder. The first end of the cylinder is provided with a first connection hole. The connection end of the ultrasonic transducer to be tested is connected to the first connection hole and is sealed to the first connection hole. The detection end of the ultrasonic transducer under test is located inside the connection end and is connected to the inner cavity of the cylinder.

5. The detection device for an ultrasonic transducer according to claim 4, characterized in that, The ultrasonic transducer testing device further includes a sealing element, which is located inside the first connecting hole and sleeved on the inner wall of the first connecting hole and the connecting end of the ultrasonic transducer to be tested. The seal is used to seal the connection between the connection end of the ultrasonic transducer under test and the first connection hole under pressure.

6. The detection device for an ultrasonic transducer according to claim 5, characterized in that, The sealing element is a gasket or a sealing ring.

7. The detection device for an ultrasonic transducer according to claim 1, characterized in that, The second end of the cylinder serves as the left end of the cylinder, and the second end of the cylinder is provided with a second connecting hole for connecting a standard ultrasonic transducer; A standard ultrasonic transducer and an ultrasonic transducer under test are disposed at the first and second ends of the cylinder, and the standard ultrasonic transducer and the ultrasonic transducer under test are on the same axis.

8. The detection device for an ultrasonic transducer according to claim 1, characterized in that, The pressing member is arranged in the form of a long rod, and the end of the pressing member opposite to the ultrasonic transducer to be tested is the pressing end; The pressing member is provided with a clearance hole, which is recessed inward from the side wall of the pressing end and is used to avoid part of the structure of the ultrasonic transducer to be tested.

9. The detection device for an ultrasonic transducer according to claim 8, characterized in that, The clearance hole is an annular hole, and part of the structure of the ultrasonic transducer under test is an annular structure.

10. The detection device for an ultrasonic transducer according to claim 1, characterized in that, The base is flat, and the cylinder and the cylindrical body are both mounted on the same base. The axis of the cylinder, the axis of the pressing component, the axis of the ultrasonic transducer to be tested, and the axis of the cylinder are on the same axis.

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