Intensive end face sealing test device and test method

Abstract

The invention relates to the technical field of sealing performance detection devices, in particular to an intensive end face sealing testing device and a testing method.The intensive end face sealing testing device comprises a base body, medium liquid can pass through a medium liquid channel, set pressure intensity can be achieved, and therefore the sealing performance of a sealing assembly can be tested. The sealing performance and the service life of the sealing assembly can be ensured to be clear before a product is installed on the sealing assembly, the quality reliability of the product is improved, meanwhile, the sealing assembly of various specifications can be tested only by replacing the cover plate of the tool, intensive end face sealing testing is achieved, the confidence coefficient of a testing result is improved, the reuse rate of the tool is improved, and the cost is reduced. The test period is accelerated, the test cost is reduced, and the test efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealing performance detection device, and particularly relates to an intensive end face sealing test device and a test method. BACKGROUND

[0002] In the end face sealing test method for aviation, a test method of directly installing an end face sealing element on a product to perform product performance comprehensive environment test is usually adopted. However, currently, the problem of leakage of the sealing on the product occurs frequently, and the assembly level test process of the end face sealing element for aviation is lacked, so that the actual sealing performance of the end face sealing element cannot be judged, the service life and quality of the sealing element cannot be obtained before the sealing element is installed on the product, and the quality reliability of the aviation hydraulic product is affected.

[0003] Moreover, the end face sealing elements applied in the aviation hydraulic system have many specifications, and if tests are carried out on different specifications one by one, problems such as long processing cycle of test tooling, high cost, and low reuse rate of tooling are faced, which greatly reduces the test efficiency of the end face sealing for aviation and affects the delivery schedule of the aviation product. SUMMARY

[0004] Technical problems to be solved

[0005] In view of the above-mentioned defects and deficiencies of the prior art, the present application provides an intensive end face sealing test device and a test method, which solves the technical problem that the service life and quality of the sealing element cannot be obtained before the sealing element is installed on the product in the prior art, and affects the quality reliability of the aviation hydraulic product.

[0006] Technical scheme

[0007] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the present application includes:

[0008] In a first aspect, the present application provides an intensive end face sealing test device for testing the sealing performance of a sealing assembly, the sealing assembly comprising a sealing ring and a cover plate. The intensive end face sealing test device comprises a base body. The base body has a medium liquid channel, and the outlet end of the medium liquid channel extends to the surface of the base body and forms a test area at the position of the surface of the base body corresponding to the outlet end of the medium liquid channel. The cover plate can be detachably connected to the test area. When the cover plate is detachably connected to the test area, the sealing ring is located between the cover plate and the test area to establish a seal between the cover plate and the test area, so as to close the outlet end of the medium liquid channel. The medium liquid channel can be connected to a liquid supply device to input medium liquid into the medium liquid channel to reach a predetermined pressure, and then the sealing performance of the sealing assembly is tested.

[0009] In one technical solution of the present application, the sealing assembly and the test area are corresponding multiple; the medium liquid channel comprises a main channel and multiple branch channels, one end of the branch channels are communicated with the main channel; one end of the main channel is the inlet end of the medium liquid channel, the other end of the multiple branch channels forms the outlet end of the corresponding medium liquid channel, so as to form multiple independent test areas on the surface position of the base.

[0010] In one technical solution of the present application, it further comprises a valve arranged on the branch channel and used for opening and closing the branch channel.

[0011] In one technical solution of the present application, a ring groove for mounting the sealing ring is arranged on the cover plate. A medium liquid storage groove is arranged on the cover plate, which corresponds to the outer periphery of the ring groove, so as to collect the medium liquid leaked due to sealing failure of the sealing ring.

[0012] In one technical solution of the present application, a medium liquid outlet is arranged on one side of the medium liquid storage groove, which can guide the medium liquid in the medium liquid storage groove out.

[0013] In one technical solution of the present application, it further comprises a positive pressure module fixedly connected to the base, which is arranged on the other side of the medium liquid storage groove; when the positive pressure module works, it inputs positive pressure gas to the medium liquid storage groove, so as to output the medium liquid in the medium liquid storage groove from the medium liquid outlet.

[0014] In one technical solution of the present application, it further comprises a liquid collecting groove arranged on one side of the base, which can fall into the liquid collecting groove when the medium liquid in the liquid collecting groove is output from the medium liquid outlet; it further comprises a display sheet arranged in the liquid collecting groove; when the medium liquid contacts the display sheet, the display sheet is infiltrated to highlight the medium liquid.

[0015] In one technical solution of the present application, the sealing assembly is an aviation end face sealing assembly.

[0016] In the second aspect, the present application provides a test method of the intensive end face sealing test device, which is applied to the intensive end face sealing test device in the above technical solution, and the method comprises:

[0017] S1: detachably fixing the cover plate with the sealing ring to the test area to establish sealing between the cover plate and the test area, so as to close the outlet end of the medium liquid channel;

[0018] S2: inputting the medium liquid to the medium liquid channel and making it reach a certain pressure;

[0019] S3: based on the pressure of the medium liquid channel reaching the certain pressure, testing the sealing condition between the outlet end of the medium liquid channel and the cover plate.

[0020] Advantageous effects

[0021] The beneficial effects of the present application are: through the technical scheme, on the one hand, the test can be realized for the sealing assembly, the sealing performance and service life of the sealing assembly can be ensured before the sealing assembly is installed on the product, the product quality reliability is improved, on the other hand, the test of sealing assemblies of various specifications can be realized by only replacing the cover plate, the intensive end face sealing test is realized, the test result confidence is improved, the reuse rate of the tooling is improved, the test period is accelerated, the test cost is reduced, and the test efficiency is greatly improved.

[0022] The design of the tooling makes the test of sealing performance no longer depend on complete product assembly, but can be completed independently at the component level, effectively realizing the quality screening of the sealing assembly before formal assembly. By pre-testing the sealing ring before actual use, the risk of product rework, on-site leakage and even safety accidents caused by sealing failure can be significantly reduced, thereby improving the reliability and safety of the final product from the source. At the same time, since the base structure remains unchanged, only the cover plate and the sealing ring are replaced according to the size and interface form of the sealing assembly, the rapid switching test of sealing assemblies of different specifications and different models can be realized. This modular design greatly improves the versatility and reusability of the tooling, avoiding the waste of resources and management complexity caused by developing special test devices for each sealing assembly in the traditional scheme.

[0023] In addition, the test tooling is simple in structure, convenient to operate, the test process can be standardized, the test data has good repeatability, which helps to establish a unified evaluation system and improve the confidence and comparability of the test results. Since it is not necessary to repeatedly disassemble and assemble the whole machine or simulate complex system environment, the test preparation time is significantly shortened, the test period is compressed, and the progress of new product development and sealing scheme iteration is accelerated. In batch testing scenarios, the efficiency of the tooling is particularly outstanding, which can complete the centralized testing of multiple batches and multiple specifications of sealing assemblies in limited space, realizing the intensive use of test resources. In summary, the technical scheme not only reduces the development and maintenance cost of the test equipment, but also improves the detection efficiency and quality control level, which has significant economic benefits and engineering application value. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a main view structural schematic diagram of the intensive end face sealing test device of the present application;

[0025] Figure 2 is a main view structural schematic diagram of the intensive end face sealing test device of the present application; Figure 1

[0026] Figure 3 is a structural schematic diagram of the cover plate of the present application;

[0027] Figure 4 is a structural schematic diagram of the cover plate of the present application; Figure 3 ​a top view of a sectional structure schematic diagram;

[0028] Figure 5 a structure schematic diagram of the intensive end face sealing test device of the present application;

[0029] Figure 6 a structure schematic diagram of the intensive end face sealing test device of the present application; Figure 5 a top view of a sectional structure schematic diagram;

[0030] Explanation of reference signs

[0031] 1: base body; 11, test area; 12, medium liquid receiving groove; 13, medium liquid outlet;

[0032] 2: sealing assembly; 21, sealing ring; 22, cover plate; 221, ring groove;

[0033] 100, medium liquid channel; 101, main channel; 102, branch channel;

[0034] 3: positive pressure module;

[0035] 4: liquid collecting groove;

[0036] 5: display sheet. DETAILED DESCRIPTION

[0037] In order to better explain the present application, in order to facilitate understanding, the following will be combined with the accompanying drawings Figures 1-6 , through specific embodiments, the present application is described in detail. Among them, the orientation mentioned in this paper "up", "down" and other orientation nouns take the orientation of the drawing as the reference. Figure 1

[0038] Example 1:

[0039] With reference to Figures 1-6 , the embodiment of the present application provides an intensive end face sealing test device for testing the sealing performance of a sealing assembly 2, the sealing assembly 2 comprising a sealing ring 21 and a cover plate 22; characterized in that the intensive end face sealing test device comprises a base body 1;

[0040] The base body 1 has a medium liquid channel 100, the outlet end of the medium liquid channel 100 extending to the surface of the base body 1, and the surface position of the base body 1 corresponding to the outlet end of the medium liquid channel 100 forming a test area 11;

[0041] The cover plate 22 can be detachably connected to the test area 11;

[0042] When the cover plate 22 is detachably connected to the test area, the sealing ring 21 is located between the cover plate 22 and the test area 11 to establish a seal between the cover plate 22 and the test area 11, thereby closing the outlet end of the medium liquid channel 100;

[0043] ​The medium liquid channel 100 can be connected to a liquid supply device to input medium liquid into the medium liquid channel 100 to reach a predetermined pressure, and then test the sealing performance of the sealing assembly 2.

[0044] By the technical scheme, on the one hand, the sealing assembly 2 can be tested to ensure that the sealing performance and service life of the sealing assembly 2 can be determined before the sealing assembly 2 is installed on a product, thereby improving product quality reliability; on the other hand, the tooling only needs to replace the cover plate 22 to test sealing assemblies 2 of various specifications, realize intensive end face sealing testing, improve test result confidence, improve tooling reuse rate, speed up test and test period, reduce test and test cost, and greatly improve test efficiency.

[0045] Specifically, the base body 1 is internally provided with a penetrating medium liquid channel 100, the outlet end of the channel directly extends to the surface of the base body 1, so that a clear test area 11 is formed on the surface of the base body 1 at the corresponding position. The cover plate 22 is detachably installed on the test area 11, and the sealing ring 21 to be tested can be arranged at the contact interface between the cover plate 22 and the test area 11, so as to form an effective sealing connection between the outlet end of the medium liquid channel 100 and the cover plate 22. By inputting medium liquid into the medium liquid channel 100 and gradually pressurizing to a predetermined test pressure, the sealing performance of the sealing ring 21 can be dynamically detected and evaluated under the condition of simulating actual working conditions, and then it is determined whether the sealing ring 21 has leakage, whether the pressure resistance meets the standard, and the stability performance under the action of continuous pressure.

[0046] The design of the tooling makes the test of the sealing performance no longer dependent on complete product assembly, but can be independently completed at the assembly level, effectively realizing quality screening of the sealing assembly 2 before formal assembly. By pre-testing the sealing ring 21 before actual use, the risk of product rework, on-site leakage and even safety accidents caused by sealing failure can be significantly reduced, thereby improving the reliability and safety of the final product from the source. At the same time, since the structure of the base body 1 remains unchanged, only the cover plate 22 and the sealing ring 21 need to be replaced according to the size and interface form of the sealing assembly 2, so that rapid switching testing of sealing assemblies 2 of different specifications and different models can be realized. This modular design greatly improves the universality and reusability of the tooling, avoiding the resource waste and management complexity caused by developing special test devices for each sealing assembly 2 in the traditional scheme.

[0047] In addition, the test tool structure is simple, convenient to operate, the test process can be standardized, the test data has good repeatability, which helps to establish a unified evaluation system and improve the confidence and comparability of test results. Since it is not necessary to repeatedly disassemble and assemble the whole machine or simulate complex system environment, the test preparation time is significantly shortened, the test period is compressed, and the progress of new product development and sealing scheme iteration is accelerated. In the batch test scene, the efficiency of the tool is particularly prominent, which can complete the centralized test of multiple batches and multiple specifications of sealing components 2 in limited space, and realize the intensive use of test resources. In summary, this technical scheme not only reduces the development and maintenance cost of test equipment, but also improves the detection efficiency and quality control level, which has significant economic benefits and engineering application value.

[0048] The cover plate 22 is provided with a ring groove 221 for mounting the sealing ring 21.

[0049] The ring groove 221 is located on the contact surface of the cover plate 22 and the base 1 test area 11, and its position corresponds to the outlet end of the medium liquid channel 100, and the shape matches the cross section and contour of the sealing ring 21 to be tested. The ring groove 221 can provide a stable mounting position and limiting space for the sealing ring 21, effectively prevent the sealing ring 21 from being offset, twisted or extrusion damaged during assembly, and ensure that it is in the correct and consistent stress position under pre-tightening. The ring groove 221 can be customized according to different sealing forms, such as O-ring, rectangular ring, star-shaped ring, etc., to adjust the geometric parameters such as groove width, groove depth and chamfer, so as to adapt to sealing rings 21 of various cross-sectional sizes and material properties, and further enhance the versatility of the tool.

[0050] By providing the ring groove 221 on the cover plate 22, the sealing ring 21 can be accurately pre-installed before each test, which not only improves the assembly efficiency and repeatability, but also significantly improves the consistency of the sealing interface. After the cover plate 22 and the test area 11 are tightly pressed together, the sealing ring 21 is subjected to controllable compression in the axial or radial direction, forming a reliable sealing interface, thereby truly reflecting the stress state and sealing capacity of the sealing element under actual working conditions, and helping to avoid false judgment caused by improper installation or uneven stress of the sealing ring 21, and improving the reliability and repeatability of the test results.

[0051] In addition, since the ring groove 221 is arranged on the replaceable cover plate 22, sealing rings 21 of different specifications can be correspondingly equipped with cover plates 22 with different ring groove 221 structures. When the test type needs to be changed, only the cover plate 22 with the matched ring groove 221 needs to be replaced, without any adjustment to the base 1 or the medium liquid channel 100, greatly simplifying the operation process. This design not only reduces the technical threshold of the operator, but also reduces the error accumulation caused by frequent disassembly and manual positioning, ensuring the standardization and standardization of the test process of multiple batches and multiple types of sealing elements.

[0052] The base body 1 can be provided in a cuboid structure, the test area 11 is located on the extension surfaces of the front and back sides of the base body 1, and the inlet end of the medium liquid channel 100 is formed on one small end surface of the base body 1. Moreover, the inlet end of the medium liquid channel 100 is detachably connected with a nozzle, such as being fixedly connected with the base body 1 through bolts, and the nozzle is used for connecting the medium liquid supply device and the medium liquid channel 100. The cover plate 22 can also be detachably fixedly connected with the test area 11 in a bolted manner.

[0053] The temperature of the medium liquid can be provided in a changeable form, for simulating the actual working condition of the sealing assembly 2 at different temperatures, so as to make the measurement result closer to the real result.

[0054] By adjusting the pre-tightening force of the connecting bolts of the cover plate 22 and the test area 11, the test condition of the sealing assembly 2 can be closer to the real use condition of the sealing assembly 2, and the measurement result can be further closer to the real result.

[0055] Embodiment 2:

[0056] With reference to Figures 1-6 , the embodiments of the present application further have the following technical solutions in addition to all the technical solutions of the above embodiments:

[0057] The sealing assembly 2 and the test area 11 are corresponding multiple; the medium liquid channel 100 includes a main channel 101 and multiple branch channels 102, one end of each of the branch channels 102 communicates with the main channel 101; one end of the main channel 101 is the inlet end of the medium liquid channel 100, and the other end of the multiple branch channels 102 forms the corresponding outlet end of the medium liquid channel 100.

[0058] In the embodiment, the sealing assembly 2 and the test area 11 are designed as multiple corresponding structural units integrated on the same base body 1, so that the simultaneous or independent test of multiple sealing assemblies 2 is realized.

[0059] The medium liquid channel 100 inside the base body 1 adopts a fluid passage layout combining a main channel and branch channels, specifically including a common main channel 101 and multiple branch channels 102 branched from the main channel. One end of the main channel 101 serves as the inlet of the entire medium liquid channel 100, for connecting an external pressure source or a test medium liquid supply system, and one end of each of the branch channels 102 communicates with the main channel 101, so as to ensure that the test medium liquid can be uniformly distributed from the main channel to each branch path. The other end of each branch channel 102 extends to different positions on the surface of the base body 1, respectively, to form multiple independent outlet ends, and the positions corresponding to the outlet ends constitute multiple distributed test areas 11.

[0060] Each test area 11 can be independently installed with a cover plate 22, and a seal ring 21 to be tested is arranged between the cover plate 22 and the test area 11, so as to form a complete sealing test unit. Through the multi-channel parallel structure design, multiple sealing assemblies 2 can be simultaneously subjected to pressure test in one medium liquid input process, and the detection efficiency per unit time is significantly improved.

[0061] In addition, since the branch channels 102 can maintain consistency of parameters such as flow passage length and cross-sectional size in design, the medium liquid pressure and flow conditions borne by each test area 11 are highly consistent, the working condition uniformity and data comparability between multiple tests are effectively ensured, and the reliability and scientificity of the test results are further enhanced.

[0062] In summary, by introducing the multi-branch medium liquid channel 100 and the multi-test area 11 in cooperation, the tool doubles the test flux without increasing additional equipment investment, strengthens the consistency and controllability of the test, fully embodies the design concept of intensification, standardization and high efficiency, and is suitable for quality control and performance comparison test in the research and development stage in a batch production environment.

[0063] Embodiment 3:

[0064] With reference to Figures 1-6 In addition to all the technical solutions of the above-mentioned embodiments, the embodiments of the present application further have the following technical solutions:

[0065] The intensification end face sealing test device further comprises a valve arranged on the branch channel 102 and used for opening and closing the branch channel 102.

[0066] In this embodiment, the valve enables each branch channel 102 to have independent opening and closing capability. The valve can adopt manual, pneumatic or electric execution modes, and is installed in the connection section of the branch channel 102 and the main channel 101 or the flow path of the branch itself, and is used for accurately controlling whether the test medium liquid flows into the corresponding branch and the test area 11 at the end of the branch.

[0067] By arranging the valve, the operator can flexibly select the number and position of the sealing assemblies 2 participating in the test according to the actual test requirements, and realize on-demand pressurization and detection of a single, multiple or all test areas 11.

[0068] For example, when only a sealing member of a certain specification or batch needs to be tested, the valves of other branches can be closed, so that the test medium liquid only flows to the target test area 11, avoiding unnecessary pressure action or potential leakage risk on the unused outlet end. At the same time, when the sealing assembly 2 of a certain branch has a serious leakage or failure, it can be isolated by closing the corresponding valve, so as to prevent affecting the test process and pressure stability of other normal branches, and ensure the continuity and data accuracy of the whole test system.

[0069] In addition, in combination with the step-by-step control strategy of the valve, complex test processes such as staged pressurization, pressure maintenance monitoring or differential pressure comparison can also be realized. For example, part of the branch can be opened first for preliminary testing, and then the remaining branches can be gradually enabled to evaluate the pressure response characteristics of the system under multiple loads; or by opening and closing the valve, the leakage rates of different sealing assemblies 2 are compared laterally to obtain more rich performance data. This controllable test mode provides more accurate data support for the selection of sealing materials, the optimization of assembly process and the prediction of service life.

[0070] Because each branch has independent control capability, the applicability of the tooling in asymmetric test scenarios is also further improved. Even if there are differences in the size of the sealing elements installed in different test areas 11, the pre-tightening force or the medium liquid resistance level, differential pressure supply or staggered testing can be realized through valve adjustment to avoid mutual interference caused by sharing the medium liquid channel 100. This not only expands the application range of the tooling, but also improves the reuse value of the equipment in research and development, quality inspection, process testing and other scenarios.

[0071] In summary, by adding valves on the branch channels 102, fine flow and pressure management of each test unit is realized, and the tooling is upgraded from a passive parallel test platform to an active controllable intelligent test system. This improvement not only improves the safety, stability and data quality of the test process, but also strengthens the flexible adaptation capability of the equipment, enabling it to cope with more diverse and complex sealing test requirements, while ensuring test accuracy, maximizing the advantages of intensive design, further reducing unit test costs and improving overall test efficiency.

[0072] Embodiment 4:

[0073] With reference to Figures 1-6 In addition to having all the technical solutions of the above-mentioned embodiments, the embodiments of the present application further have the following technical solutions:

[0074] The medium liquid receiving groove 12 is located on the outer periphery of the ring groove 221 to collect the medium liquid leaked due to sealing failure of the sealing ring 21.

[0075] In this technical solution, the medium liquid receiving groove 12 forms a liquid collection structure around the outer periphery of the sealing interface. When the cover plate 22 is pressed against the test area 11, the sealing ring 21 is compressed and forms a sealing interface, and the medium liquid receiving groove 12 does not directly participate in the sealing action, but serves as an interception and collection area for potential leakage paths.

[0076] If the sealing ring 21 fails locally or leaks slightly during the test, the test medium liquid escaping from the sealing interface will not directly leak out to the outside of the tool or contaminate the surrounding environment, but will first be guided into the medium liquid receiving groove 12 for temporary storage.

[0077] By providing the medium liquid receiving groove 12, the safety and controllability of the test process are significantly improved, especially when high-pressure, high-temperature, or corrosive and flammable test medium liquids are used. The medium liquid receiving groove 12 can effectively prevent the disordered diffusion of the medium liquid and reduce the operation risk.

[0078] The medium liquid receiving groove 12 is provided with a medium liquid outlet 13 on one side, which can guide the medium liquid in the medium liquid receiving groove 12 out.

[0079] The medium liquid outlet 13 can effectively guide the leaked medium liquid accumulated in the groove out, realizing the orderly discharge and subsequent treatment of the leaked medium liquid, so that the medium liquid receiving groove 12 not only has the ability to temporarily store the leaked medium liquid, but also forms a complete leakage drainage and discharge path, avoiding the problems of accumulation, corrosion or pressure rise caused by long-term retention of the medium liquid in the groove.

[0080] Through the provision of the medium liquid outlet 13, the operator can directly observe or quantitatively measure the guided medium liquid. For example, when performing liquid sealing test, the leakage rate per unit time can be calculated by collecting the volume and time relationship of the guided liquid, realizing the quantitative evaluation of the degradation degree of the sealing performance; in addition, the outlet can be connected to online monitoring equipment such as conductivity sensor, pH probe or micro liquid drop detector, realizing real-time analysis of the composition or state of the leaked medium liquid, further improving the intelligent level of detection.

[0081] In combination with the aforementioned multi-branch independent control valve and the medium liquid receiving system of each test area 11, each test unit can realize complete closed-loop management of "independent pressure supply-leakage capture-directional guidance". When leakage occurs at a test point, the leaked medium liquid is discharged through the dedicated medium liquid outlet 13 and does not flow into other test areas 11, ensuring the data independence and result reliability of multi-channel parallel test. At the same time, by observing which medium liquid outlet 13 of the test area 11 has medium liquid discharged, the failure position can be quickly located, facilitating timely replacement of sealing parts or adjustment of assembly process, and reducing downtime troubleshooting time.

[0082] In summary, the introduction of the medium liquid outlet 13 upgrades the function of the medium liquid storage groove 12 from passive containment to active drainage, forming a complete leakage response mechanism. This design not only improves the safety margin and maintainability of the tool in the case of sealing failure, but also provides a physical channel for quantitative analysis and fault diagnosis of the leakage amount, further enhancing the fine control ability and engineering practicality of the test system, making the entire intensive end face sealing test process safer, more efficient, more accurate and more traceable.

[0083] Embodiment 5:

[0084] With reference to Figures 1-6 In addition to having all the technical solutions of the above-mentioned embodiments, the embodiments of the present application further have the following technical solutions:

[0085] The intensive end face sealing test device further comprises a positive pressure module 3 fixedly connected to the base body 1, the positive pressure module 3 being arranged on the other side of the medium liquid storage groove 12; when the positive pressure module 3 is working, the positive pressure gas is input into the medium liquid storage groove 12, so that the medium liquid in the medium liquid storage groove 12 is output from the medium liquid outlet 13. The intensive end face sealing test device further comprises a liquid collecting groove 4 arranged on one side of the base body 1, and after the medium liquid in the liquid collecting groove 4 is output from the medium liquid outlet 13, it can fall into the liquid collecting groove 4.

[0086] In this embodiment, the positive pressure module 3 forms a gas path communication with the inside of the storage groove. When there is leakage medium liquid entering the medium liquid storage groove 12 during the test, the positive pressure module 3 can start to work and input controllable positive pressure gas into the storage groove. The positive pressure gas acts on the liquid surface in the storage groove, forming a directional pressure difference, and pushing the accumulated medium liquid in the groove to overcome the flow resistance and smoothly discharge along the pre-set medium liquid outlet 13. This active driving mechanism effectively solves the problem of poor liquid discharge caused by liquid viscosity, surface tension or pipeline bending, ensures that the leakage liquid can be completely and quickly discharged, and avoids the pollution or misjudgment caused by residual liquid to the subsequent test.

[0087] The introduction of the positive pressure module 3 makes the collection and treatment process of the leakage medium liquid more active and efficient. The positive pressure module 3 can be set as a gas pump, by adjusting the pressure and duration of the input gas, the precise control and discharge of liquid with different viscosity or flow rate can be realized, which is especially suitable for continuous monitoring of trace leakage. For example, in a long time pressure test, even if the liquid seeps out at a very slow speed, the positive pressure module 3 can be periodically started to concentrate and discharge the small amount of liquid accumulated to the detection device, improving the detection sensitivity and response speed.

[0088] Meanwhile, a liquid collecting groove 4 is arranged on one side of the base 1, which corresponds to the medium liquid outlet 13 of each test area 11, and is used to receive the liquid discharged from the medium liquid outlet 13. The liquid collecting groove 4 has a certain volume and a surrounding structure, which can collect the discharged liquid from multiple test units, prevent the liquid from splashing or flowing along the surface of the equipment, and keep the tooling and the surrounding environment clean and safe.

[0089] The liquid collecting groove 4 also facilitates regular inspection and cleaning by the operator, and in combination with the active liquid discharge function of the positive pressure module 3, the entire system forms a complete closed-loop management process of “leakage capture-positive pressure discharge-concentrated collection”. This process not only improves the adaptability and reliability of the tooling under complex working conditions, but also enhances the whole-process monitoring capability of the sealing failure behavior. Especially in the multi-station, long-time and high-precision sealing test task, the combination of the structure effectively guarantees the continuity and authenticity of the test data, avoiding the risk of secondary leakage, cross contamination or corrosion caused by the retention of leakage liquid.

[0090] Embodiment 6:

[0091] With reference to Figures 1-6 In addition to having all the technical solutions of the above-mentioned embodiments, the embodiments of the present application further have the following technical solutions:

[0092] The intensive end face sealing test device further comprises a display sheet 5 arranged in the liquid collecting groove 4; when the medium liquid contacts the display sheet 5, the display sheet 5 is infiltrated to highlight the medium liquid.

[0093] In this embodiment, a display sheet 5 is arranged inside the liquid collecting groove 4, which is made of a special material sensitive to liquid and has good infiltration response characteristics. When the leakage liquid discharged from the medium liquid outlet 13 falls into the liquid collecting groove 4 and contacts the display sheet 5, the liquid quickly spreads on the surface of the display sheet 5 and is adsorbed, causing obvious changes in color, luster or texture, thereby forming clear and distinguishable wet marks or color difference marks in vision. This infiltration effect makes the test liquid, which may be colorless and transparent or has low contrast with the environment, be highlighted, so that the operator can identify whether there is a leakage phenomenon remotely or quickly.

[0094] This design greatly improves the intuitiveness and response speed of leakage detection. In the multi-station synchronous test process, even if multiple test points share one liquid collecting groove 4, the liquid dropped at different times or positions will leave independent infiltration marks on the display sheet 5. By observing the number, position and extension range of the marks, the leakage source and leakage degree can be preliminarily judged, and the fault can be quickly located. For trace leakage, the high sensitivity response of the display sheet 5 can capture the drop point of a single drop of liquid, avoiding being ignored due to too little liquid, and improving the reliability and fault tolerance of the detection.

[0095] In addition, the display sheet 5 can be selected according to the properties of the test medium liquid, for example, an oleophilic material is used to enhance the response to oil medium, and the structure realizes the visual early warning of the leakage state in a low-cost manner without the need for complex sensor or electronic monitoring system, which is particularly suitable for on-site inspection, unattended test or as an auxiliary confirmation means of an automatic monitoring system.

[0096] Specifically, the display sheet 5 can be an oil-absorbing paper.

[0097] In combination with the active liquid discharge function of the positive pressure module 3, the role of the display sheet 5 is further enhanced: the positive pressure driven discharge ensures the timed and directional discharge of the liquid, and the display sheet 5 presents the discharge result in real time, and the two cooperate to form a closed-loop test mechanism of “forced output-visual feedback”. Even in the case of insufficient light or complex environment, the occurrence of the leakage event can be clearly judged through the wet boundary of the display sheet 5, effectively reducing the misjudgment rate.

[0098] In summary, the introduction of the display sheet 5 in the liquid collecting tank 4 converts the originally hidden liquid existence into an intuitive visual signal, significantly improving the convenience, sensitivity and operability of leakage identification. Without increasing the complexity of the system, the design enhances the human-machine interaction capability and the on-site adaptability of the tooling, provides a simple and efficient means for rapid evaluation and troubleshooting of the sealing performance, and further improves the functionality and practicality of the entire intensive test system.

[0099] Embodiment 7:

[0100] With reference to Figures 1-6 , the embodiments of the present application provide a test method of an intensive end face sealing test device, which is applied to the intensive end face sealing test device in the above embodiments, and the method comprises:

[0101] S1: detachably fixing and connecting the cover plate 22 with the sealing ring 21 to the test area 11 to establish a seal between the cover plate 22 and the test area 11, so as to close the outlet end of the medium liquid channel 100;

[0102] S2: introducing the medium liquid into the medium liquid channel 100 and making it reach a predetermined pressure;

[0103] S3: based on the pressure of the medium liquid channel 100 reaching the predetermined pressure, testing the sealing condition between the outlet end of the medium liquid channel 100 and the cover plate 22;

[0104] S2 specifically comprises:

[0105] S2.1: opening the corresponding valve, and then making the sealing assembly 2 corresponding to the valve enter the test operation;

[0106] S2.2: introducing the medium liquid into the medium liquid channel 100, and making it reach a predetermined pressure according to a gradient from small to large;

[0107] S3 specifically comprises:

[0108] S3.1: Start the positive pressure module 3 to input positive pressure gas to the medium liquid receiving groove 12 to make the medium liquid in the medium liquid receiving groove 12 output from the medium liquid outlet 13;

[0109] S3.2: Observe the display sheet 5 through the visual camera;

[0110] When the visual camera observes that the display sheet 5 at the corresponding position displays oil, the valve corresponding to the corresponding test area 11 is controlled to be closed.

[0111] In the embodiment, the test method of the intensive end face sealing test device fully combines the structural advantages of the tool, such as multi-channel parallel test, leakage active guiding and draining, and visual feedback, and constructs an efficient, intelligent and automatically responsive sealing performance evaluation process.

[0112] The pressure in the medium liquid channel 100 can be tested by a pressure gauge, and the controller electrically connected with the pressure gauge, the valve, the liquid supply device, the visual camera, and the positive pressure module 3 is further included.

[0113] When performing the test, first, step S1 is performed: the cover plate 22 matched with the sealing ring 21 to be tested is installed on the corresponding test area 11 on the base body 1, and a predetermined preload is applied by bolts or other fastening methods, so that the sealing ring 21 is pressed between the cover plate 22 and the test area 11 to form a reliable initial sealing interface. At this time, the sealing ring 21 is embedded in the ring groove 221 on the cover plate 22, and the position is accurate and the force is uniform, thereby providing a stable assembly basis for subsequent pressure test.

[0114] Then, the S2 stage is entered: the test system is connected through the inlet end of the medium liquid channel 100, the test medium liquid is continuously input to the dry road channel 101, the pressure is gradually increased to the set test pressure value, and the pressure is maintained for a certain time under the pressure to simulate the static pressure or dynamic load in the actual working condition. The medium liquid is distributed to each branch channel 102 through the dry road channel 101 and acts on the sealing interface of each test area 11. If the sealing is good, the system pressure remains stable; if there is a small leakage, the medium liquid will pass through the failure area into the medium liquid receiving groove 12 on the surface of the test area 11 and be temporarily captured.

[0115] In the S2 stage of the test method, the specific implementation process is further refined into an orderly pressure increasing process to ensure the safety, stability and repeatability of the test data. First, S2.1 is performed: the valve of the branch corresponding to the sealing assembly 2 required to participate in this test is opened, so that the test medium liquid enters the specified branch channel 102 and acts on the sealing interface of the corresponding test area 11.

[0116] After the valve is opened, enter S2.2 stage, to the inlet of medium liquid channel 100 continuously into the test medium liquid, and adopts the way of gradient pressure rise to gradually improve the system pressure. Specifically, the pressure is not loaded to the final specified pressure at one time, but according to the multiple pressure levels from small to large, such as 30%, 60%, 80%, 100%, 120% of the rated pressure, stage by stage, each level of pressure is kept for a certain time, such as 5-10 minutes, for observing the performance of the sealing interface under different loads. The gradient pressure process simulates the dynamic scenes such as equipment start-stop, load change and other dynamic scenes in actual working conditions, which helps to expose the potential defects of the seal under the conditions of thermal expansion and contraction, material creep or stress relaxation.

[0117] The gradient pressure not only improves the safety margin of the test, prevents the seal ring 21 from being extruded, turned over or the substrate 1 from being deformed due to sudden pressure rise, but also records the pressure decay curve or leakage development trend at each stage by keeping pressure step by step, providing rich data for quantitative evaluation of sealing performance. For example, if the pressure drop rate is found to be abnormal at a certain pressure level, or the visual monitoring system captures the wetting signal of the display sheet 5, the pressure rise can be immediately suspended, the problem can be located, and it can be decided whether to continue the test to avoid irreversible damage.

[0118] When entering S3 stage, i.e. the sealing performance judgment link, the system comprehensively judges the sealing state based on whether the medium liquid channel 100 can stably maintain the specified pressure. On this basis, an active detection mechanism is further introduced. First, S3.1 is executed: the positive pressure module 3 arranged on the other side of the medium liquid receiving groove 12 of each test area 11 is started, and gas is input into the receiving groove. On the premise of not damaging the main seal, the accumulated leakage liquid in the groove is pushed out along the medium liquid outlet 13 by the gas pressure. This process realizes forced removal and centralized release of potential leakage liquid, avoiding misjudgment or affecting subsequent tests due to liquid retention.

[0119] Then S3.2 is executed: the state change of the display sheet 5 is monitored in real time by the visual camera arranged above or beside the liquid collecting groove 4. Since the display sheet 5 has excellent wetting development characteristics, as soon as the medium liquid is discharged from the outlet and contacts its surface, obvious wetting marks such as color deepening, reflection change or outline diffusion are produced, which are quickly captured by the visual camera and transmitted to the control system. The system analyzes the wet area and its position of the display sheet 5 through image recognition algorithm, accurately judges which test area 11 has leakage.

[0120] When the visual camera identifies that the display piece 5 at a certain position appears oil wetting signal, the control system responds immediately, automatically closes the valve on the branch channel 102 corresponding to the leakage test area 11, blocks the medium liquid supply of the branch, prevents the leakage from expanding or affecting the pressure stability of other normal test units. This closed-loop control mechanism not only realizes the rapid isolation of the fault point, guarantees the continuous operation of the remaining test channels, but also avoids the delay and error of human intervention, significantly improves the safety, continuity and intelligent level of the overall test process.

[0121] The test method realizes the whole-process cooperation of "pressurization-leakage detection-drainage-development-identification-valve closing", especially in the batch test scene of multiple specifications and multiple batches of sealing elements, the method can complete automatic screening, abnormal alarm and local stop test in unattended state, greatly improving the test efficiency and data reliability. At the same time, the recorded leakage time, position and wetting image can also be used as an important basis for sealing life evaluation, process improvement and quality traceability, fully supporting product design optimization and manufacturing process control, and embodying the advanced test concept of intensification, standardization and intelligentization.

[0122] It can be understood that the above embodiments 1-7 can be freely combined to form other embodiments of the present application, except for the parts in conflict.

[0123] In the description of the present application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0124] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0125] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature is "over", "above" and "on top of" a second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature is "under", "below" and "underneath" a second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature. The term "comprising" or any other similar word is intended to encompass a non-exclusive inclusion, so that a process, article, or equipment / device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also inherent elements of these processes, articles, or equipment / devices.

[0126] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without deviating from the principles of the present application, and the technical solutions after these changes or replacements will all fall within the protection scope of the present application.

Claims

1. A compact end-face sealing test device for testing the sealing performance of a sealing assembly (2), the sealing assembly (2) comprising a sealing ring (21) and a cover plate (22); characterized in that, The integrated end-face sealing test device includes a substrate (1); The substrate (1) has a medium liquid channel (100), the outlet end of the medium liquid channel (100) extends to the surface of the substrate (1), and a test area (11) is formed at the surface position of the substrate (1) corresponding to the outlet end of the medium liquid channel (100). The cover plate (22) can be detachably connected to the test area (11); when the cover plate (22) is detachably connected to the test area, the sealing ring (21) is located between the cover plate (22) and the test area (11) to establish a seal between the cover plate (22) and the test area (11), thereby closing the outlet end of the medium liquid channel (100); The medium liquid channel (100) can be connected to a liquid supply device to input medium liquid into the medium liquid channel (100) and reach a predetermined pressure, thereby testing the sealing performance of the sealing assembly (2).

2. The integrated end-face sealing test device as described in claim 1, characterized in that: The medium liquid channel (100) includes a main channel (101) and multiple branch channels (102), one end of each branch channel (102) is connected to the main channel (101); One end of the main channel (101) is the inlet end of the medium liquid channel (100), and the other end of the multiple branch channels (102) forms the outlet end of the corresponding medium liquid channel (100), so as to form multiple independent test areas (11) on the surface of the substrate (1).

3. The integrated end-face sealing test device as described in claim 2, characterized in that: It also includes a valve located on the branch passage (102) and used to independently open and close the branch passage (102).

4. The integrated end-face sealing test device as described in claim 3, characterized in that: The cover plate (22) has an annular groove (221) for installing the sealing ring (21); the test area (11) has a medium liquid collection tank (12), which corresponds to the outer periphery of the annular groove (221) to collect the medium liquid leaked by the sealing ring (21) due to sealing failure.

5. The integrated end-face sealing test device as described in claim 4, characterized in that: The medium liquid receiving tank (12) has a medium liquid outlet (13) on one side, and the medium liquid outlet (13) can discharge the medium liquid in the medium liquid receiving tank (12).

6. The integrated end-face sealing test device as described in claim 5, characterized in that: It also includes a positive pressure module (3) fixedly connected to the substrate (1), the positive pressure module (3) being located on the other side of the medium liquid receiving tank (12); When the positive pressure module (3) is working, positive pressure gas is input into the medium liquid receiving tank (12) so that the medium liquid in the medium liquid receiving tank (12) is output from the medium liquid outlet (13).

7. The integrated end-face sealing test device as described in claim 6, characterized in that: It also includes a liquid collection tank (4) disposed on one side of the substrate (1), which can fall into the liquid collection tank (4) after the medium liquid in the liquid collection tank (4) is output from the medium liquid outlet (13); it also includes a display panel (5) disposed in the liquid collection tank (4). When the medium liquid comes into contact with the display panel (5), the display panel (5) is wetted to highlight the medium liquid.

8. The integrated end-face sealing test device as described in claim 6, characterized in that: The sealing component (2) is an aviation end face sealing component (2).

9. A test method for an integrated end-face sealing test device, characterized in that: The method, applied to the integrated end-face seal testing device as described in any one of claims 1-8, comprises: S1: The cover plate (22) with the sealing ring (21) is detachably and fixedly connected to the test area (11) to establish a seal between the cover plate (22) and the test area (11), thereby closing the outlet end of the medium liquid channel (100); S2: Introduce medium liquid into the medium liquid channel (100) and bring it to a predetermined pressure; S3: Based on the pressure of the medium liquid channel (100) reaching the predetermined pressure, test the sealing condition between the outlet end of the medium liquid channel (100) and the cover plate (22).

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