Air tightness test tool for transducer

Abstract

The utility model discloses an air tightness test tool of a transducer, which comprises an upper plate and a lower plate, the upper plate is arranged on the lower plate, and the upper plate is inserted into the lower plate; a first groove is formed in the lower plate, a fourth groove is formed in the upper plate, and the first groove corresponds to the fourth groove in position; a Luer taper is arranged on the upper plate, and one end of the Luer taper is oppositely communicated with the fourth groove. According to the airtight tool, the potential leakage problem can be found in advance by detecting the sealing performance of the transducer, the situation that elements in the transducer are affected with damp and polluted due to gas leakage is avoided, then the stable performance of the transducer is guaranteed, the situations of signal distortion, energy loss and the like caused by the sealing problem are reduced, and the service life of the transducer is prolonged. The accurate and reliable energy conversion and signal transmission under various working conditions can be ensured; the airtight tool ensures that the internal pressure of the transducer is reasonably isolated from the external environment, the mechanical damage risk caused by pressure change and vibration is reduced, and the reliability of the transducer under the complex working condition is improved.

Description

Technical Field

[0001] This utility model relates to the field of transducer airtightness testing technology, and in particular to a transducer airtightness testing fixture. Background Technology

[0002] When transducers are used in hospitals, they undergo high-temperature, moist heat sterilization for repeated use. During this process, the transducers are in a humid environment for extended periods. If their airtightness is poor, water vapor from the air can enter, causing moisture to accumulate in the transducer's core and affecting product quality. Hospitals have extremely high requirements for the performance and safety of transducers. If a transducer malfunctions due to airtightness issues, it may affect the accuracy of medical diagnosis and treatment, and even lead to medical accidents.

[0003] Existing transducer testing methods include: Water immersion method: The transducer under test is fully or partially immersed in water, and its airtightness is judged by observing whether bubbles emerge. If bubbles are generated, it indicates that the device has a leak. However, during the testing process, water may seep into the transducer, causing short circuits and corrosion of internal components, thus affecting the transducer's performance and shortening its service life. Bubble method: A foaming agent, soapy water, or other bubble-generating substance is applied to the transducer surface, and airtightness is judged by whether bubbles are generated. When there is a leak in the transducer, gas will escape from that point and form bubbles. However, the bubble method has two drawbacks: firstly, the uniformity of the applied substance is difficult to control, and uneven application can easily lead to missed detections or misjudgments; secondly, the observation time is difficult to determine precisely, and observing too early or too late will affect the accuracy of the test results, and this method has low testing efficiency. Pressure change method: Airtightness is judged by measuring changes in the internal pressure of the device. Specifically, the device is first inflated or evacuated to reach a specific pressure value, then the inlet or outlet valve is closed, and the pressure change is observed over a period of time. If the pressure remains stable, it indicates that the device is airtight; if the pressure drops significantly, it indicates a leak. This method has high accuracy and reliability, but requires appropriate pressure measurement equipment. While the pressure change method offers high accuracy, it also requires specialized pressure measurement equipment, which increases equipment costs, places high demands on the testing environment, and is complex to operate, making it unsuitable for rapid on-site testing. Therefore, it is essential to develop a high-precision airtightness fixture for transducer airtightness testing. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a transducer airtightness testing fixture.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A transducer airtightness testing fixture includes an upper plate and a lower plate, the upper plate being placed on the lower plate and inserted into the lower plate; a first groove is provided on the lower plate, and a fourth groove is provided on the upper plate, the first groove and the fourth groove being positioned opposite each other; a Luer connector is provided on the upper plate, one end of the Luer connector communicating with the fourth groove.

[0007] Preferably, the lower plate is further provided with a second groove and a third groove, and the first groove, the second groove and the third groove are arranged in sequence.

[0008] Preferably, the upper plate is further provided with a fifth groove and a sixth groove, and the fourth groove, the fifth groove and the sixth groove are arranged in sequence; the second groove corresponds to the fifth groove, and the third groove corresponds to the sixth groove.

[0009] Preferably, a soft silicone tube is arranged around the first groove.

[0010] Preferably, a first silicone sheet is disposed in the second groove, and a second silicone sheet is disposed in the fifth groove.

[0011] Preferably, the lower plate is provided with two pins in symmetrical positions, and the upper plate is provided with a hole at the position corresponding to each of the pins.

[0012] Preferably, a seventh groove is provided on the upper plate, one end of the Luer connector passes through the seventh groove and communicates with the fourth groove, and the other end of the Luer connector is placed in the seventh groove.

[0013] Preferably, both the upper plate and the lower plate are made of aluminum.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention designs a transducer airtightness testing fixture. By testing the sealing performance of the transducer, the airtightness fixture can detect potential leakage problems in advance, avoid moisture and contamination of internal components of the transducer due to gas leakage, and thus ensure the stable performance of the transducer. It also reduces signal distortion and energy loss caused by sealing problems, and ensures that the transducer can accurately and reliably convert energy and transmit signals under various working conditions.

[0016] Airtight fixtures ensure proper isolation between the internal pressure of the transducer and the external environment, reducing the risk of mechanical damage caused by pressure changes and vibrations, and improving its reliability under complex working conditions. Through testing, products with substandard sealing performance can be screened out, and timely repairs or scrapping can be carried out to prevent transducers with sealing defects from entering the market, thereby improving the quality consistency and reliability of the entire product batch and enhancing the company's product reputation and market competitiveness.

[0017] By rigorously testing transducers using airtight fixtures during the production process, sealing issues can be identified and resolved early, reducing malfunctions and damage caused by airtightness problems during product use. This helps reduce equipment maintenance frequency and repair costs, minimizes production downtime and economic losses due to equipment maintenance, and improves the overall lifespan and economic efficiency of the equipment. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the upper plate proposed in this utility model;

[0020] Figure 2 This is a structural schematic diagram of the upper plate from another angle proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the lower plate proposed in this utility model.

[0022] Legend:

[0023] 1. Upper plate, 2. Lower plate, 3. First groove, 4. Second groove, 5. Third groove, 6. Fourth groove, 7. Fifth groove, 8. Sixth groove, 9. Luer connector, 11. Insertion hole, 12. Seventh groove, 21. Pin, 31. Soft silicone tube, 41. First silicone sheet, 71. Second silicone sheet. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first," "second," or "third" may explicitly or implicitly include one or more of those features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Reference Figures 1 to 3 As shown, a transducer airtightness testing fixture includes an upper plate 1 and a lower plate 2. The upper plate 1 is placed on the lower plate 2 and inserted into the lower plate 2. The lower plate 2 has a first groove 3, and the upper plate 1 has a fourth groove 6, with the first groove 3 and the fourth groove 6 corresponding in position. The upper plate 1 has a Luer connector 9, one end of which communicates with the fourth groove 6. The upper plate 1 is used for air injection through the stainless steel Luer connector 9, and a 1mm thick soft silicone sheet 71 is attached to the fifth groove 7 to prevent air leakage. A hollow soft silicone tube 31 is attached around the lower plate 2 and covered with a 1mm thick soft silicone sheet 41 to prevent air leakage. In addition, two press-fit stainless steel pins 21 on the lower plate 2 are used to limit the insertion hole 11 of the upper plate 1. Finally, two quick-locking clips are used to secure the upper and lower plates tightly.

[0027] The lower plate 2 is also provided with a second groove 4 and a third groove 5, and the first groove 3, the second groove 4 and the third groove 5 are arranged in sequence; the upper plate 1 is also provided with a fifth groove 7 and a sixth groove 8, and the fourth groove 6, the fifth groove 7 and the sixth groove 8 are arranged in sequence; the second groove 4 and the fifth groove 7 are in corresponding positions, and the third groove 5 and the sixth groove 8 are in corresponding positions.

[0028] A soft silicone tube 31 is arranged around the first groove 3; a first silicone sheet 41 is arranged in the second groove 4, and a second silicone sheet 71 is arranged in the fifth groove 7; two symmetrical pins 21 are arranged on the lower plate 2, and an insertion hole 11 is arranged on the upper plate 1 at the corresponding position of each pin 21; a seventh groove 12 is arranged on the upper plate 1, one end of the Luer connector 9 passes through the seventh groove 12 and communicates with the fourth groove 6, and the other end of the Luer connector 9 is placed in the seventh groove 12.

[0029] Both the upper plate 1 and the lower plate 2 are made of aluminum. Aluminum 5052 has good corrosion resistance, resisting the erosion of moisture, oxygen, and some chemicals in the air. During transducer airtightness testing, the fixture may be exposed to various environmental conditions, including humid air or potentially corrosive media. Using aluminum 5052 ensures that the fixture will not be damaged by corrosion during long-term use, thus ensuring its sealing performance and accuracy, and extending its service life.

[0030] First, place the transducer smoothly into the first groove 3, the second groove 4, and the third groove 5 on the lower plate, ensuring that the transducer fits tightly in the first groove 3, the second groove 4, and the third groove 5. This accurately positions the transducer and ensures that its position is consistent during each test, effectively improving the accuracy and repeatability of the test.

[0031] Subsequently, the upper plate 1 is connected to the lower plate 2 using press-fit stainless steel pins 21, and the position is carefully adjusted to ensure accurate alignment of the upper plate 1 and the lower plate 2. The function of the press-fit stainless steel pins 21 is to ensure the relative positional accuracy of the upper and lower plates and prevent misalignment during clamping and inspection.

[0032] Finally, use the quick-lock clamp to press the upper and lower plates tightly together. During operation, the clamping force can be controlled by adjusting the lever arm of the quick-lock clamp. It is necessary to ensure that the transducer is firmly clamped, but also to avoid damaging the transducer due to excessive clamping force.

[0033] Connect the assembled transducer fixture to a handheld pressure gauge. Slowly inflate the fixture using the gauge until the internal pressure reaches the set test pressure value (150-200 mmHg). Slow inflation effectively prevents pressure shocks from damaging the transducer and fixture.

[0034] Once the test pressure value is reached, stop inflation and maintain this pressure for a period of time (e.g., 1 minute). During this time, the operator closely observes the pressure changes inside the fixture using a handheld pressure gauge. If the pressure drop is within the allowable range (within 2 mmHg), the transducer is airtight; if the pressure drop exceeds the allowable range (within 2 mmHg), the transducer is considered to have a leakage problem.

[0035] After the test is completed, open the exhaust valve to release the internal pressure of the tooling, then loosen the quick-lock clamp and carefully remove the transducer. This completes a full test process.

[0036] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A gas tightness test tool for a transducer, characterized by, The utility model provides a kind of plate structure, including upper plate and lower plate, the upper plate is placed on the lower plate, the upper plate is plugged on the lower plate;A first recess is provided on the lower plate, a fourth recess is provided on the upper plate, the first recess and the fourth recess position correspond;A luer connector is provided on the upper plate, and one end of the luer connector is opposite to the fourth recess.

2. The air tightness test tooling for a transducer of claim 1, wherein, The lower plate is also provided with a second recess and a third recess, and the first recess, the second recess and the third recess are arranged in sequence.

3. The air tightness test tooling for a transducer of claim 2, wherein, The upper plate is also provided with a fifth recess and a sixth recess, and the fourth recess, the fifth recess and the sixth recess are arranged in sequence;The second recess and the fifth recess position correspond, and the third recess and the sixth recess position correspond.

4. The air tightness test tooling for a transducer of claim 1, wherein, A soft silica gel tube is arranged around the first recess.

5. The air tightness test tooling for a transducer of claim 3, wherein, A first silica gel sheet is arranged in the second recess, and a second silica gel sheet is arranged in the fifth recess.

6. The air tightness test tooling for a transducer of claim 1, wherein, The lower plate is provided with two symmetrical pins, and the upper plate is provided with a corresponding hole at the position corresponding to each pin.

7. The air tightness test tooling for a transducer of claim 1, wherein, The upper plate is provided with a seventh recess, one end of the luer connector passes through the seventh recess and is opposite to the fourth recess, and the other end of the luer connector is placed in the seventh recess.

8. The air tightness test tooling for a transducer of claim 1, wherein, The upper plate and the lower plate are both made of aluminum.

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