Test system for testing sealing life of bowl-shaped plug

Abstract

The utility model relates to the technical field of engine sealing, in particular to a test system for testing the sealing life of a bowl-shaped plug. The test system comprises a test assembly and a loading device, a test cavity is formed in the test assembly, a mounting hole communicated with the test cavity is formed in the top of the test assembly and used for mounting a bowl-shaped plug, a water leakage alarm device is arranged on the edge of the mounting hole, the loading device comprises a vibration part, a pressurization part and a temperature control part, and the test assembly is connected with the vibration part. The pressurizing part is communicated with the testing cavity, and part of the temperature control part is arranged in the testing cavity. The test system provided by the utility model can effectively evaluate the sealing life and performance of the bowl-shaped plug under various working conditions by simulating real operation conditions and providing accurate monitoring means.

Description

Technical Field

[0001] The utility model relates to the technical field of engine sealing, and particularly relates to a test system for testing the sealing life of a bowl-shaped plug. Background Art

[0002] In the application of diesel engines, it is crucial to keep the temperature of the cylinder block within an acceptable range. Since a large amount of heat is generated during the operation of a diesel engine, a cooling water circulation system is usually adopted to cool the cylinder block. For this reason, bowl-shaped plugs are used in the cylinder block design to ensure the sealing of the cooling system and prevent the leakage of cooling water, thereby ensuring the normal operation and service life of the engine.

[0003] Traditionally, the manufacturing of diesel engine cylinder blocks usually adopts the sand mold casting method, which is economical and highly adaptable. During the manufacturing process, holes are reserved in the cylinder block for installing bowl-shaped plugs to seal the channels for cooling water circulation. During the installation of the bowl-shaped plugs, an interference fit method is adopted to ensure the tight fit between the bowl-shaped plugs and the cylinder block holes, preventing the leakage of cooling water.

[0004] However, in actual operation, due to the dynamic working environment of the bowl-shaped plugs, their sealing performance is affected by various factors. First, the excitation of the ground on the wheels and the vibration generated by the engine itself are transmitted to the bowl-shaped plugs, which may cause a change in their contact state with the cylinder block. Second, as the engine continues to operate, the temperature change of the cooling water also affects the thermal expansion and contraction of the bowl-shaped plugs, further affecting their sealing performance. These factors may all lead to the deterioration of the sealing performance of the bowl-shaped plugs, and ultimately may cause the leakage of cooling water, posing a threat to the reliability and service life of the engine. Summary of the Utility Model

[0005] The purpose of the utility model is to at least solve the problem that the sealing life of the bowl-shaped plug cannot be tested according to the actual situation of the engine operation. This purpose is achieved through the following technical solutions:

[0006] The utility model provides a test system for testing the sealing life of a bowl-shaped plug, comprising:

[0007] A test component, with a test cavity inside. An installation hole communicating with the test cavity is opened at the top of the test component. The installation hole is used for installing the bowl-shaped plug, and a water leakage alarm device is arranged at the edge of the installation hole;

[0008] A loading device, which includes a vibration part, a pressure part, and a temperature control part. The test component is connected to the vibration part. The pressure part is communicated with the test cavity, and part of the temperature control part is arranged inside the test cavity.

[0009] According to the test system of the present utility model, it includes a test assembly. The test assembly is used to simulate the installation position of the bowl-shaped plug. The test chamber of the test assembly is filled with liquid. A leakage alarm device is provided at the edge of the installation hole for installing the bowl-shaped plug, and the leakage alarm device can detect in time any leakage caused by the sealing failure of the bowl-shaped plug. Additionally, the loading device simulates the actual working conditions of the engine. By setting the vibration part, this test system can simulate the vibrations generated during the operation of the engine and the vehicle, which is crucial for testing the performance and durability of the bowl-shaped plug in the vibration environment during actual operation; the pressurizing part enables the test system to simulate the situation of the bowl-shaped plug under the pressure of engine operation, and this simulation ensures that the sealing performance of the bowl-shaped plug under different pressures can be accurately evaluated; since the temperature change directly affects the thermal expansion or contraction of the sealing material, the design of the temperature control part enables the test system to simulate and control the temperature in the test chamber, thereby evaluating the influence of temperature change on the sealing efficiency of the bowl-shaped plug. This test system can effectively evaluate the sealing life and performance of the bowl-shaped plug under various working conditions by simulating real operating conditions and providing accurate monitoring means. This not only helps to improve the design and material selection of the bowl-shaped plug, but also can improve the reliability and efficiency of the entire diesel engine system.

[0010] In addition, the test system according to the present utility model may further have the following additional technical features:

[0011] In some embodiments of the present utility model, the test assembly includes a housing and a top plate. The top plate is detachably connected to the top of the housing. The test chamber is formed inside the housing, and the installation hole is provided on the top plate.

[0012] In some embodiments of the present utility model, the test assembly further includes a base. The base is provided at the bottom of the housing and is detachably connected to the vibration part.

[0013] In some embodiments of the present utility model, the pressurizing part includes an air injection pump and a connecting pipeline. The air injection pump is connected to the test chamber through the connecting pipeline, and a valve is provided on the connecting pipeline.

[0014] In some embodiments of the present utility model, the pressurizing part further includes a pressure stabilizing gas cylinder. The part of the connecting pipeline between the valve and the air injection pump is connected to the pressure stabilizing gas cylinder.

[0015] In some embodiments of the present utility model, the pressurizing part further includes a pressure gauge. The pressure gauge is used to test the pipeline pressure between the air injection pump and the pressure stabilizing gas cylinder.

[0016] In some embodiments of the present utility model, the temperature control part includes a heating element and a temperature measuring element. The heating element is arranged in the test cavity, the temperature measuring structure of the temperature measuring element is arranged in the test cavity, and the display structure of the temperature measuring element is arranged outside the test assembly.

[0017] In some embodiments of the present utility model, the water leakage alarm device is a water leakage induction rope.

[0018] In some embodiments of the present utility model, the test cavity is in the shape of a cube or a cylinder.

[0019] In some embodiments of the present utility model, the axis of the mounting hole coincides with the axis of the test cavity. Description of the Drawings

[0020] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0021] Figure 1 Schematically shows a structural diagram of a test system according to an embodiment of the present utility model;

[0022] Figure 2 Schematically shows a cross-sectional structural diagram of a test assembly according to an embodiment of the present utility model.

[0023] The reference numerals are as follows:

[0024] 100, test system;

[0025] 10, test assembly; 11, top plate; 111, mounting hole; 12, housing; 121, test cavity; 122, air inlet hole; 13, base; 131, limiting hole; 20, vibration part; 30, pressurizing part; 31, connecting pipeline; 32, valve; 33, gas filling pump; 34, pressure gauge; 35, pressure stabilizing gas cylinder; 40, temperature control part; 41, heating element; 42, temperature measuring element; 50, water leakage alarm device;

[0026] 200, bowl-shaped plug. Detailed Embodiments

[0027] The following will describe the exemplary embodiments of the present disclosure in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully communicated to those skilled in the art.

[0028] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless an execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0029] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly dictates otherwise, terms such as "first", "second", and other numerical terms when used herein do not imply an order or sequence. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0030] For ease of description, spatial relative relation terms may be used herein to describe the relationship of one element or feature shown in the figures to another element or feature, such as "inner", "outer", "inside", "outside", "below", "beneath", "above", "over", etc. Such spatial relative relation terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature will then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can include both an upper and a lower orientation.

[0031] As Figures 1 to 2As shown, according to an embodiment of the present utility model, a test system 100 for testing the sealing life of a bowl-shaped plug 200 is provided. The test system 100 includes a test assembly 10 and a loading device. A test cavity 121 is provided inside the test assembly 10. An installation hole 111 communicating with the test cavity 121 is formed in the top plate 11. The installation hole 111 is used for installing the bowl-shaped plug 200. A water leakage alarm device 50 is provided at the edge of the installation hole 111. The loading device includes a vibration part 20, a pressurization part 30 and a temperature control part 40. The test assembly 10 is connected to the vibration part 20. The pressurization part 30 is communicated with the test cavity 121. Part of the temperature control part 40 is arranged inside the test cavity 121.

[0032] The test system 100 according to this embodiment includes a test assembly 10. The test assembly 10 is used to simulate the installation position of the bowl-shaped plug 200. The test cavity 121 of the test assembly 10 is filled with liquid. A water leakage alarm device 50 is provided at the edge of the installation hole 111 for installing the bowl-shaped plug 200. The water leakage alarm device 50 can detect any leakage caused by the sealing failure of the bowl-shaped plug 200 in a timely manner. In addition, the loading device simulates the actual working conditions of the engine. By setting the vibration part 20, the test system 100 can simulate the vibration generated during the operation of the engine and the vehicle, which is crucial for testing the performance and durability of the bowl-shaped plug 200 in the vibration environment during actual operation. The pressurization part 30 enables the test system 100 to simulate the situation of the bowl-shaped plug 200 under the operating pressure of the engine. This simulation ensures that the sealing performance of the bowl-shaped plug 200 under different pressures can be accurately evaluated. Since the temperature change directly affects the thermal expansion or contraction of the sealing material, the design of the temperature control part 40 enables the test system 100 to simulate and control the temperature inside the test cavity 121, thereby evaluating the influence of temperature change on the sealing efficiency of the bowl-shaped plug 200. By simulating the real operating conditions and providing accurate monitoring means, the test system 100 can effectively evaluate the sealing life and performance of the bowl-shaped plug 200 under various working conditions. This not only helps to improve the design and material selection of the bowl-shaped plug 200, but also can improve the reliability and efficiency of the entire diesel engine system.

[0033] It can be understood that the test assembly 10 includes a housing 12 and a top plate 11. The top plate 11 is detachably connected to the top of the housing 12. A test chamber 121 is formed inside the housing 12, and mounting holes 111 are provided on the top plate 11. The specific way in which the top plate 11 is detachably connected to the top of the housing 12 is that a plurality of bolts are evenly distributed around the top plate 11, and the top plate 11 is tightly connected to the housing 12 by means of bolt fixation. This not only ensures the stability between the top plate 11 and the housing 12, but also guarantees the sealing performance of the test chamber 121. Moreover, a gasket is provided on the mating surface of the housing 12 and the top plate 11. The gasket is made of a material resistant to high temperatures and chemical corrosion to enhance the sealing performance of the entire system. The bolt-fixed connection method provides a firm structural connection between the top plate 11 and the housing 12, which is particularly important in pressurized and vibrating environments and can prevent sealing problems caused by loose connections. At the same time, the detachable design of the top plate 11 makes it easy to access and maintain the inside of the test system 100, facilitating routine inspections, cleaning, and replacement of the bowl-shaped plug 200 or other internal components, thereby improving the usage efficiency and maintenance convenience of the test system 100.

[0034] It can be understood that the test assembly 10 further includes a base 13. The base 13 is provided at the bottom of the housing 12, and the base 13 is detachably connected to the vibration part 20. First of all, the base 13 is a structure that firmly supports the housing 12. The base 13 is fixedly connected to the housing 12 using bolts to ensure the stability of the entire test assembly 10 during operation. Secondly, the base 13 is detachably connected to the vibration part 20 using a detachable connection method, such as using a quick connection device (such as a quick lock, bolt connection, or snap mechanism), to facilitate the quick installation and removal of the base 13. However, it is necessary to ensure that the quick connection device remains stable under vibration conditions to prevent loosening or detachment caused by vibration. By making the connection between the base 13 and the vibration part 20 detachable, the base 13 can be quickly replaced or adjusted according to different test requirements to adapt to different types of test systems 100 or different test environments. The ability to quickly replace the base 13 makes the maintenance and configuration of the test system 100 more convenient and fast. For example, when the base 13 needs to be repaired or replaced, it does not affect other parts of the entire test system 100, enabling efficient maintenance and replacement. At the same time, the structure and connection method of the base 13 are designed considering vibration and other operating loads to ensure stability and safety during the test process.

[0035] In some embodiments, the pressurizing section 30 includes a gas charging pump 33 and a connecting pipeline 31. The gas charging pump 33 is connected to the test chamber 121 through the connecting pipeline 31, and a valve 32 is provided on the connecting pipeline 31. The gas charging pump 33 should be selected to meet the required pressure range and flow rate for the test. For example, a gas pump with adjustable output pressure is selected to ensure that the pressure in the test chamber 121 can be accurately controlled. The gas charging pump 33 should have high efficiency and reliability, be able to work stably under continuous operation conditions, and have an overpressure protection function to prevent accidental pressure overload during the test. A valve 32 that can be operated remotely or manually is installed on the connecting pipeline 31 to facilitate the control of gas flow. The valve 32 is selected to be of high precision and fast response speed to achieve precise control of the test pressure. By using an adjustable gas charging pump 33 and a precise valve 32, the experimental system can accurately control the pressure in the test chamber 121 to meet different test requirements. This precise control is the key to evaluating the sealing performance of the bowl-shaped plug 200 under different pressure conditions.

[0036] It can be understood that an air inlet hole 122 for communicating with the gas charging pump 33 is provided on the housing 12.

[0037] It can be understood that a section of the connecting pipeline 31 close to the test chamber 121 is kept horizontal to prevent the connecting pipeline 31 from imposing a load on the interface and damaging the sealing effect.

[0038] It can be understood that the gas charging pump 33 can be a bicycle pump, which is usually more stable and suitable for laboratory or industrial environments and can provide continuous and controllable pressure output.

[0039] Specifically, an openable air inlet is provided on the connecting pipeline 31, and the gas charging pump 33 is connected to the connecting pipeline 31 through the air inlet.

[0040] Specifically, the pressurizing section 30 further includes a pressure stabilizing gas cylinder 35, which is connected to a part of the connecting pipeline 31 located between the valve 32 and the gas charging pump 33. The pressure stabilizing gas cylinder 35 should be located on the connecting pipeline 31 between the valve 32 and the gas charging pump 33 to ensure that the gas from the gas charging pump 33 can first enter the pressure stabilizing gas cylinder 35, and after preliminary pressure stabilization, it is then delivered to the test chamber 121. The main function of the pressure stabilizing gas cylinder 35 is to buffer and stabilize pressure fluctuations, reduce the pressure mutation that may be caused by the direct gas supply from the gas charging pump 33, and provide a smoother and more stable pressure output.

[0041] Specifically, the pressurizing section 30 further includes a pressure gauge 34, and the pressure gauge 34 is connected to the pipeline located between the gas filling pump 33 and the pressure stabilizing gas cylinder 35. By installing the pressure gauge 34 between the gas filling pump 33 and the pressure stabilizing gas cylinder 35, the pressure state of the test system 100 can be monitored in real time, and the output of the gas filling pump 33 can be adjusted in time to ensure the stability of the test environment. Accurate pressure data helps to evaluate the performance of the bowl-shaped plug 200 under different pressures, improving the reliability and scientific nature of the test. The pressure gauge 34 can be a digital pressure gauge 34. The digital pressure gauge 34 can provide more accurate and easily readable data and may include a remote monitoring function. If a digital pressure gauge 34 is used, its output can be connected to a central control system or a data acquisition system to achieve automatic data recording and pressure regulation. To ensure system safety, the reading of the pressure gauge 34 can be used to trigger safety protocols, such as automatically shutting down or opening the safety valve when the pressure exceeds the safe range.

[0042] It can be understood that the pressure in the pressure stabilizing gas cylinder 35 is 2 - 3 bar. Testing under a pressure of 2 - 3 bar can simulate the common working pressures in many automotive applications, which is an important parameter for testing the sealing effect and structural integrity of the bowl-shaped plug 200.

[0043] In some embodiments, the temperature control section 40 includes a heating element 41 and a temperature measuring element 42. The heating element 41 is arranged inside the test chamber 121, and the temperature measuring structure of the temperature measuring element 42 is arranged inside the test chamber 121, while the display structure of the temperature measuring element 42 is arranged outside the housing 12. The heating element 41 should be designed as a structure that can evenly distribute heat, such as an electric heating wire or a heating plate, and is arranged inside the test chamber 121 to provide uniform heating. This part should ensure sufficient coverage area so that the temperature inside the entire test chamber 121 is uniform. The temperature measuring structure of the temperature measuring element 42 is an accurate temperature sensor, such as a thermocouple or a PT100 (resistance temperature sensor) temperature sensor, installed at key positions inside the test chamber 121 to monitor and control the temperature in real time. Multiple-point arrangement can obtain more accurate temperature distribution data. The display structure of the temperature measuring element 42 is an easy-to-read digital or analog display, installed outside the housing 12, facilitating the operator to monitor and adjust the temperature without opening the device. This embodiment uses accurate heating element 41 and temperature measuring element 42 and their optimized layout to ensure uniform and accurate control of the temperature inside the test chamber 121, which is crucial for evaluating the performance of the bowl-shaped plug 200 under different temperature conditions.

[0044] It can be understood that the temperature control section 40 further includes a control component or the temperature control section 40 is electrically connected to the central control system, and the control component or the central control system can automatically adjust the power of the heating element 41 and maintain the set temperature according to the feedback of the temperature measuring element 42. Specifically, this kind of automatic control can be achieved through a PID (intelligent control) controller to optimize the response time and accuracy of temperature regulation.

[0045] It is understandable that the heating element 41 heats the liquid in the test chamber 121 to 95 - 100 °C. Heating the liquid to 95 - 100 °C can simulate the temperature that the cooling system of a vehicle engine may reach under high load. This helps to evaluate the performance and durability of the bowl-shaped plug 200 under similar actual working conditions.

[0046] Specifically, a limiting hole 131 is provided on the base 13, and the heating element 41 is inserted through the limiting hole 131, and the limiting hole 131 limits the heating element 41.

[0047] In some embodiments, the water leakage alarm device 50 is a water leakage induction rope. The water leakage induction rope is installed at the edge of the installation hole 111 (i.e., around the installation area of the bowl-shaped plug 200). The water leakage induction rope uses the principle of conductivity change. When the induction rope comes into contact with water, its resistance value changes, thus triggering the alarm system. The alarm system that the water leakage induction rope can be connected to includes audio and visual warning devices to ensure that the operator is immediately reminded in case of leakage. The water leakage induction rope can quickly detect leakage and trigger an alarm, effectively reducing the losses and risks caused by leakage.

[0048] In some embodiments, the test chamber 121 is in the shape of a cube or a cylinder. The test chamber 121 is designed in the shape of a cube or a cylinder, and such a design helps to evenly distribute the heating element 41 and make the temperature distribution more uniform. In addition, the cube or cylinder shape is convenient for calculating and simulating the internal flow and heat transfer. The numerical simulation and thermodynamic calculation are simplified by the geometric shape of the cube or cylinder, improving the efficiency of design and testing.

[0049] In some embodiments, the axis of the test chamber 121 coincides with the axis of the installation hole 111. Further, the axis of the top plate 11 coincides with the axis of the installation hole 111, ensuring that the first-order mode of the test assembly 10 (referring to the lowest-frequency vibration mode presented when the system vibrates freely) is the breathing mode of the top plate 11 (referring to a vibration form in which the top plate 11 moves as a whole into or out of the test chamber 121, similar to the expansion and contraction of the chest during breathing). Ensuring that the axis of the top plate 11 coincides exactly with the axis of the installation hole 111, such a design helps to reduce structural stress and deformation and enhance the overall stability of the system. By precise alignment and structural adjustment, ensuring that the first-order mode of the test assembly 10 is the breathing mode of the top plate 11 helps to improve the structural response to dynamic loads and the overall vibration characteristics.

[0050] In some embodiments, the vibration unit 20 includes a vibration table, an acceleration sensor, a displacement sensor, a mounting bracket, a fixture, and a shock absorption mechanism. The vibration table typically uses an electrodynamic vibration table, which generates vibrations of a specified frequency and amplitude by driving an eccentric mass with a motor or directly driving the tabletop with magnetic force. The vibration table generally includes a sturdy tabletop for mounting test samples (such as the test assembly 10). A driving device, such as an electromagnetic coil or a rotating eccentric wheel, is installed below the tabletop. The vibration table can be equipped with a control system or electrically connected to a central control system, capable of precisely controlling the frequency, amplitude, and mode of vibration (such as sine wave, random wave, etc.). The control system usually includes a touch screen operation interface and a digital control module. The acceleration sensor is installed on the vibration table and the test assembly 10 to monitor acceleration data in real time and ensure that the vibration input meets the test requirements. The displacement sensor is used to monitor and record the displacement of the tabletop and the test assembly 10 to evaluate the actual impact of the vibration and the response of the sample. The mounting bracket and fixture are used to fix the test assembly 10. The bottom of the vibration table contains shock absorption elements, such as springs, rubber pads, or air cushions, to reduce the vibration transmission to the ground and the surrounding environment. The vibration table can simulate the vibrations that a vehicle or mechanical equipment may suffer under various working environments, thereby testing the performance and durability of the bowl-shaped plug 200 under these conditions.

[0051] The operation method of the test system 100 is as follows. First, set up or prepare the test system 100. Place the base 13 of the test component 10 on the tabletop of the vibration table and fix it with bolts to ensure a firm connection between the base 13 and the vibration table and avoid displacement during vibration. Fix the pressure stabilizing gas cylinder 35 at a position higher than the test chamber 121 in the housing 12 to facilitate the smooth flow of gas in the system and prevent water from flowing back into the gas cylinder. Connect one end of the connecting pipeline 31 to the test chamber 121 in the middle of the housing 12. Add water to the housing 12 up to the height of the top plate 11 to ensure the correct water level. Fix the top plate 11 to the housing 12 with bolts to ensure the sealing performance. Then, close the valve 32 on the connecting pipeline 31 and open the air inlet. Use a pump to pump air into the pressure stabilizing gas cylinder 35 through the air inlet while monitoring the pressure gauge 34. Stop pumping air until the pressure reaches the required experimental value (2 - 3 bar). Close the air inlet and open the valve 32 to allow the gas to enter the test chamber 121 of the test component 10 from the pressure stabilizing gas cylinder 35 through the connecting pipeline 31 to provide a fixed pressure for the test component 10. Connect the heating element 41 to the water in the test chamber 121 and ensure that the thermometer is correctly placed. Use the temperature controller to adjust the temperature and heat the water in the test chamber 121 to 95 - 100 °C. Set the vibration frequency (vibration frequency is 770 - 790 Hz), amplitude, and duration of the vibration table according to the test requirements. Start the experiment by turning on the vibration table. Observe the leakage sensing rope. Once leakage is detected, the leakage sensing rope will trigger the alarm, and record the time when the leakage occurs at this time. Record all key data in the experiment, including temperature, pressure, vibration parameters, and leakage time, for analyzing the sealing performance of the bowl-shaped plug 200. Finally, turn off the vibration table and the heating element 41. Release the pressure in the test system 100 and drain the water in the housing 12. Calculate the sealing life of the bowl-shaped plug 200 based on the recorded data. Analyze the data to determine the possible direction for improving the product design.

[0052] The data shows that the normal acceleration at the sealing position of the bowl-shaped plug during the test drive is about 20 m / s 2 , and this vibration test utilizes the first-order breathing mode of the structure to ensure that the vibration amplification factor at the center of the top plate is 20 times, which can make the vibration response at the sealing position of the bowl-shaped plug during the test reach up to 400 m / s 2 , ensuring the safety threshold of the bowl-shaped plug seal, shortening the test time, and thus realizing the simulation of the full operating conditions of the bowl-shaped plug and the vibration acceleration test in the laboratory. It should be noted that for each group of tests, ensure that the vibration period does not exceed 1×10 6 times. If there is no sealing leakage under this vibration condition, it can be considered that the seal is reliable.

[0053] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present utility model should be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A test system for testing the sealing life of a bowl-shaped plug, characterized in that: include: A test assembly, wherein a test cavity is provided inside the test assembly, a mounting hole communicating with the test cavity is provided on the top of the test assembly, the mounting hole is used to install a bowl-shaped plug, and a water leakage alarm device is provided at the edge of the mounting hole; The loading device includes a vibration part, a pressurizing part and a temperature control part. The test assembly is connected to the vibration part, the pressurizing part is connected to the test cavity, and part of the temperature control part is arranged in the test cavity.

2. The test system for testing the sealing life of a bowl-shaped plug according to claim 1, characterized in that: The test assembly comprises a shell and a top plate, wherein the top plate is detachably connected to the top of the shell, the test cavity is formed inside the shell, and the mounting hole is formed on the top plate.

3. The test system for testing the sealing life of a bowl-shaped plug according to claim 2, characterized in that: The test assembly also includes a base, which is arranged at the bottom of the shell and is connected to the vibration part in a detachable manner.

4. The test system for testing the sealing life of a bowl-shaped plug according to claim 1, characterized in that: The pressurizing part includes an air pump and a connecting pipeline. The air pump is connected to the test chamber through the connecting pipeline, and a valve is provided on the connecting pipeline.

5. The test system for testing the sealing life of a bowl-shaped plug according to claim 4, characterized in that: The pressurizing part also includes a pressure-stabilizing gas cylinder, and the portion of the connecting pipeline located between the valve and the gas pump is connected to the pressure-stabilizing gas cylinder.

6. The test system for testing the sealing life of a bowl-shaped plug according to claim 5, characterized in that: The pressurizing part also includes a pressure gauge, which is used to test the pipeline pressure between the gas pump and the pressure-stabilizing gas cylinder.

7. The test system for testing the sealing life of a bowl-shaped plug according to claim 1, characterized in that: The temperature control unit includes a heating element and a temperature measuring element. The heating element is arranged in the test cavity. The temperature measuring structure of the temperature measuring element is arranged in the test cavity. The display structure of the temperature measuring element is arranged outside the test component.

8. The test system for testing the sealing life of a bowl-shaped plug according to any one of claims 1 to 7, characterized in that: The water leakage alarm device is a water leakage sensing rope.

9. The test system for testing the sealing life of a bowl-shaped plug according to any one of claims 1 to 7, characterized in that: The test cavity is in the shape of a cube or a cylinder.

10. The test system for testing the sealing life of a bowl-shaped plug according to any one of claims 1 to 7, characterized in that: The axis of the mounting hole coincides with the axis of the test cavity.

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