A multifunctional sealing detection test bench

Abstract

The present invention discloses a multifunctional sealing detection test bench, which belongs to the technical field of detection test benches. The test bench comprises a base, a multidimensional vibration table is arranged on the upper end of the base, a fixing device and a transparent sealing cavity are arranged on the upper end of the multidimensional vibration table, the fixing device is arranged in the transparent sealing cavity, the transparent sealing cavity is connected with a pipeline, the pipeline and the transparent sealing cavity form a closed loop, and a test medium generating device is arranged on the pipeline. The multifunctional sealing detection test bench in the present invention can realize multidimensional vibration, can realize multivariable sealing measurement under vibration, variable temperature and variable pressure environment, and effectively evaluate the sealing performance.

Description

Technical Field

[0001] The invention relates to a pipeline, a joint and a sealing component sealing test bench, in particular to a multifunctional sealing detection test bench. Background Art

[0002] At present, the sealing performance of pipeline seals, gaskets, O-rings and other seals is usually measured by measuring the mechanical properties of the monomer or observing the appearance of the actual application state to judge its sealing performance, or by bubble test or pressure test to measure the actual application state. However, there are too many variables in measuring the seal in the actual application state, and it is not easy to evaluate the effectiveness of the seal by measuring a single variable.

[0003] At present, the sealing performance of products is mainly measured by testing the static sealing performance at room temperature through the test bench, and the sealing performance of products is qualitatively measured by soap bubbles in actual product applications. This separate test cannot achieve effective prevention in the product design stage and predict the life span.

[0004] At present, the sealing performance of assemblies is mainly measured through a single detection method of increasing or decreasing pressure. The measurement results and indicators are converted into quantitative data, and the test accuracy is low. Summary of the invention

[0005] The purpose of the present invention is to provide a multifunctional sealing detection test bench to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A multifunctional sealing detection test bench comprises a base, characterized in that a multidimensional vibration table is arranged on the upper end of the base, a fixing device and a transparent sealing cavity are arranged on the upper end of the multidimensional vibration table, the fixing device is arranged in the transparent sealing cavity, the transparent sealing cavity is connected with a pipeline, the pipeline and the transparent sealing cavity form a closed loop, and a test medium generating device is arranged on the pipeline.

[0008] As a further solution of the present invention: the multi-dimensional vibration table includes front and rear vibration plates for front and rear vibration, the front and rear vibration plates are arranged at the upper end of the base, the front and rear vibration plates are provided with left and right vibration for left and right vibration, and a detection platform for up and down vibration is arranged above the left and right vibration plates.

[0009] As a further solution of the present invention: the test medium generating device includes a pump, a high-pressure pressure vessel, a switch valve, a pressure detector, a temperature detector, a filter, a low-pressure pressure vessel and two high-precision flow meters, one end of the pump is connected to the air inlet pipeline, and the other end is connected to the air outlet pipeline, the air inlet pipeline and the air outlet pipeline together constitute the pipeline, the air inlet pipeline is sequentially provided with a high-pressure pressure vessel, a switch valve, a pressure detector, a temperature detector and a high-precision flow meter, the air outlet pipeline is sequentially provided with a filter, a low-pressure pressure vessel and another high-precision flow meter, one end of the air outlet pipeline and the air inlet pipeline are both arranged in a transparent sealing cavity, and the end is provided with a connecting piece for connecting a workpiece.

[0010] As a further solution of the present invention: the front and rear vibration plates are movably arranged on the base, a cam 2 is arranged on one side of the front and rear vibration plates, and a return spring is arranged on the other side, and the cam 2 is driven by a servo motor 3.

[0011] As a further solution of the present invention: the left and right vibration plates are movably arranged on the front and rear vibration plates, a cam 1 is arranged on one side of the left and right vibration plates, and a return spring is arranged on the other side, and the cam 1 is driven by a servo motor 2.

[0012] As a further solution of the present invention: the detection platform is connected to the left and right vibration plates through spring steel plates, at least two groups of spring steel plates are provided, and corresponding iron blocks and electromagnets are provided between the detection platform and the left and right vibration plates.

[0013] As a further solution of the present invention: the fixing device includes a servo motor 1, which is arranged on one side of the upper end of the detection platform, and a fixing block is fixed on the other side of the upper end of the detection platform, the servo motor 1 is connected to one end of a transmission screw, and the other end of the transmission screw is connected to a bearing 1, and the bearing 1 is fixed to the upper end of the detection platform, and a slideway 2 is arranged on the detection platform, and a slider is arranged on the slideway 2, and the slider is threadedly connected to the transmission screw, and the slider is fixedly connected to a moving block through a connecting rod 1, and the moving block is arranged on the slideway 1 on the detection platform.

[0014] As a further solution of the present invention: sealing rings are installed at the contact ports between the transparent sealing cavity and the pipeline.

[0015] As a further solution of the present invention: a sprayer is arranged in the transparent sealed cavity.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This multifunctional sealing test bench is equipped with a multi-dimensional vibration table, which can adjust the workpiece in three directions of freedom: up and down, left and right, and front and back, and realize vibration in three directions of X, Y, and Z, which is used to simulate different vibration conditions;

[0018] 2. This multifunctional sealing test bench is also equipped with a test medium generating device through the pipeline. The leakage amount can be determined by measuring the flow difference through the high-precision flow meter. The temperature detector and the pressure detector can detect the temperature and pressure changes in real time to determine the sealing performance of the workpiece. The high-pressure pressure vessel integrates the medium heating function. The designed pump can achieve medium sealing measurement with a maximum pressure of 20 bar, and can realize dynamic measurement of sealing performance under variable temperature and pressure conditions, simulate a variety of environments, and improve test accuracy;

[0019] 3. Movable front and rear vibration plates are arranged on the base, and the front and rear vibration plates can reciprocate forward and backward under the cooperation of the second cam and the return spring, thereby realizing the function of front and rear vibration, and the structure is simple;

[0020] 4. Left and right vibration plates are arranged on the front and rear vibration plates, and the left and right vibration plates can reciprocate left and right under the cooperation of cam 1 and return spring, thereby realizing the function of left and right vibration. The structure is simple, and the required functions are realized while saving costs;

[0021] 5. The testing platform is connected to the left and right vibration plates through spring steel plates. The spring steel plates can not only play a supporting role but also have a certain degree of expansion and contraction in the vertical direction, so that the testing platform can have a certain activity space in the vertical direction. In addition, the cooperation between the iron block and the electromagnet enables the testing platform to reciprocate up and down, thereby realizing the up and down vibration function;

[0022] 6. A fixing device is set on the test bench, and the function of clamping the workpiece is realized through the cooperation of the transmission screw and the slider, so that the workpiece can remain stable during the test process;

[0023] 7. A sealing ring is designed at the contact point between the transparent sealing cavity and the pipeline to ensure the sealing of the transparent sealing cavity during the detection process and ensure the stability of the detection;

[0024] 8. A sprayer is set in the transparent sealing chamber. After spraying, the inspector can intuitively judge the sealing performance of the workpiece by observing whether there are bubbles in the seal. Under the premise that the above design ensures the accuracy of the test, the design of the sprayer provides convenience.

[0025] In summary, the multifunctional sealing detection test bench in the present invention can realize multi-dimensional vibration, can realize multi-variable sealing measurement under vibration, variable temperature and variable pressure environment, and effectively evaluate the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a multifunctional sealing detection test bench;

[0027] Figure 2It is a structural schematic diagram of a multifunctional sealing detection test bench;

[0028] Figure 3 Schematic diagram of the front and rear vibration plates of the multifunctional sealing test bench.

[0029] In the figure: 1, base; 2, front and rear vibration plates; 3, left and right vibration plates; 4, test bench; 5, high-precision flow meter; 6, temperature detector; 7, pressure detector; 8, switch valve; 9, high-pressure pressure vessel; 10, pump; 11, filter; 12, low-pressure pressure vessel; 13, air outlet pipeline; 14, air inlet pipeline; 15, transparent sealing chamber; 16, sprinkler; 17, hose; 18, fixed block; 19, moving block; 20, connecting rod 1; 21, bearing 1; 22 , transmission screw; 23, slider; 24, servo motor one; 25, slideway one; 26, slideway two; 27, spring steel plate; 28, electromagnet; 29, iron block; 30, connecting rod two; 31, support cylinder one; 32, cam one; 33, rotating shaft one; 34, bearing two; 35, servo motor two; 36, cam two; 37, bearing three; 38, rotating shaft two; 39, servo motor three; 40, support cylinder two; 41, connecting rod three; 42, baffle one; 43, baffle two. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-3 The present embodiment provides a multifunctional sealing detection test bench, including a base 1, a multi-dimensional vibration table is arranged on the upper end of the base 1, a fixing device and a transparent sealing cavity 15 are arranged on the upper end of the multi-dimensional vibration table, the fixing device is arranged in the transparent sealing cavity 15, the transparent sealing cavity 15 is provided with a sealing door for placing the workpiece, and a sealing state is achieved after the sealing door is closed, the transparent sealing cavity 15 is connected with a pipeline, the pipeline and the transparent sealing cavity 15 form a closed loop, and a test medium generating device is arranged on the pipeline.

[0032] Working process: fix the workpiece on the fixing device at the upper end of the multi-dimensional vibration table, connect the pipeline inside the transparent sealing cavity 15 to both sides of the workpiece, and test the sealing performance of the workpiece through the test medium generating device on the pipeline.

[0033] Furthermore, the multi-dimensional vibration table includes front and rear vibration plates 2 for front and rear vibration, the front and rear vibration plates 2 are arranged at the upper end of the base 1, and left and right vibration plates 3 for left and right vibration are arranged on the front and rear vibration plates 2. A detection platform 4 for up and down vibration is arranged above the left and right vibration plates 3, and a fixing device and a transparent sealing cavity 15 are arranged at the upper end of the detection platform 4.

[0034] Furthermore, the test medium generating device includes a pump 10, a high-pressure pressure vessel 9, a switch valve 8, a pressure detector 7, a temperature detector 6, a filter 11, a low-pressure pressure vessel 12 and two high-precision flow meters 5. One end of the pump 10 is connected to an air inlet pipeline 14, and the other end is connected to an air outlet pipeline 13. The air inlet pipeline 14 and the air outlet pipeline 13 together constitute the pipeline. The air inlet pipeline 14 is provided with a high-pressure pressure vessel 9, a switch valve 8, a pressure detector 7, a temperature detector 6 and a high-precision flow meter 5 in sequence. The air outlet pipeline 13 is connected to an air inlet pipeline 14 and an air outlet pipeline 13. A filter 11, a low-pressure pressure vessel 12 and another high-precision flowmeter 5 are arranged on the pipeline 13 in sequence. One end of the outlet pipeline 13 and the inlet pipeline 14 are both arranged in a transparent sealed cavity 15, and a connector for connecting a workpiece is provided at the end. The high-pressure pressure vessel 9 integrates a medium heating function, which can realize the heating of the test medium and achieve temperature increase through electric heating. The highest achievable operating temperature of the test medium is 250°C. The pump 10 can achieve medium sealing measurement with a maximum pressure of 20 bar, and the pressure increase is achieved through the pump 10.

[0035] Preferably, the pipeline in the transparent sealing cavity is designed as a hose 17, so as to facilitate the connection of different workpieces to be inspected.

[0036] Preferably, the connector for connecting the workpiece provided on the hose 17 can be selected from different types of workpieces to form a closed-loop sealed pipeline with the workpiece for sealing performance testing.

[0037] Furthermore, the front and rear vibration plates 2 are movably arranged on the base 1, and a slide groove is arranged on the base 1 for the front and rear vibration plates 2 to move forward and backward. The front and rear vibration plates 2 are arranged on the slide groove, and a cam 2 36 is arranged on one side of the front and rear vibration plates 2, and a return spring is arranged on the other side. The cam 2 36 is driven by a servo motor 39.

[0038] Preferably, combined Figure 2 The servo motor 39 is arranged on one side of the bottom plate 1. The servo motor 39 drives the cam 2 36 to rotate through the rotating shaft 2 38. The rotating shaft 2 38 is fixed on the side end of the bottom plate 1 through the bearing 37. The bearing 37 can cooperate with the servo motor 39 to support the rotating shaft 2 38. Figure 3The cam 2 36 drives the front and rear vibration plates 2 to move through the connecting rod 3 41. One end of the connecting rod 3 41 is arranged on one side of the front and rear vibration plates 2, and a rotating wheel is installed on the other side of the connecting rod 3 41. The connecting rod 3 41 is in contact with the cam 2 36 through the rotating wheel. At the same time, a supporting tube 2 40 is arranged on the upper end of the base 1 to support the connecting rod 3 41 and make it move in a straight line. One end of the return spring on the other side of the front and rear vibration plates 2 is connected to the front and rear vibration plates 2, and the other end is connected to the baffle 2 43. Through the cooperation of the cam 2 36 and the return spring, the reciprocating motion of the front and rear vibration plates 2 in the slide groove on the base 1 is realized, thereby realizing the function of front and rear vibration.

[0039] Furthermore, the left and right vibration plates 3 are movably arranged on the front and rear vibration plates 2, and a slide groove for the left and right movement of the left and right vibration plates 3 is arranged on the front and rear vibration plates 2. The left and right vibration plates 3 are arranged on the slide groove, and a cam 32 is arranged on one side of the left and right vibration plates 3, and a return spring is arranged on the other side. The cam 32 is driven by a servo motor 35.

[0040] Preferably, combined Figure 1 , Figure 2 The servo motor 2 35 is arranged on one side of the base 1, and the servo motor 2 35 is connected to the cam 1 32 through the rotating shaft 1 33. The rotating shaft 1 33 is arranged on the side wall of the base 1 through the bearing 2 34. The cam 1 32 abuts against the roller at one end of the connecting rod 2 30, and the other end of the connecting rod 2 30 is connected to one side of the left and right vibration plates 3. The other side of the left and right vibration plates 3 is movably connected to the baffle 1 2 through a reset spring. The baffle 1 42 is fixed to the upper end of the front and rear vibration plates 2. With the cooperation of the reset spring and the cam 1 32, the reciprocating motion of the left and right vibration plates 3 in the slide grooves on the front and rear vibration plates 2 is realized, thereby realizing the function of left and right vibration.

[0041] Furthermore, the detection platform 4 is connected to the left and right vibration plates 3 via spring steel plates 27 , and at least two groups of spring steel plates 27 are provided. Corresponding iron blocks 29 and electromagnets 28 are provided between the detection platform 4 and the left and right vibration plates 3 .

[0042] Preferably, the electromagnet 28 is fixed at the lower end of the detection table 4, and the iron block 29 is fixed at the upper ends of the left and right vibration plates 3. The electromagnet 28 and the iron block 29 are separated by a certain gap. By energizing the electromagnet 28, the electromagnet 28 and the iron block 29 generate magnetic attraction, and the magnet 28 drives the detection table 4 to move downward. When the current is disconnected, under the action of the spring steel plate 27, the detection table 4 returns to its original height, and the power is continuously turned on and off at intervals, so that the reciprocating up and down motion of the detection table 4 can be realized, thereby realizing the function of up and down vibration.

[0043] Furthermore, the fixing device includes a servo motor 24, which is arranged on one side of the upper end of the detection platform 4, and a fixed block 18 is fixed on the other side of the upper end of the detection platform 4. The servo motor 24 is connected to one end of a transmission screw 22, and the other end of the transmission screw 22 is connected to a bearing 21, and the bearing 21 is fixed to the upper end of the detection platform 4. A slideway 26 is arranged on the detection platform 4, and a slider 23 is arranged on the slideway 26. The slider 23 is threadedly connected to the transmission screw 22, and the slider 23 is fixedly connected to the moving block 19 through a connecting rod 20. The moving block 19 is arranged on a slideway 25 on the detection platform 4. The slideway 25, the moving block 19, and the fixed block 18 are all arranged in a transparent sealing cavity 15 to achieve sealing of the surrounding environment of the workpiece and improve the detection accuracy. Sealing rings are installed at the contact ports between the transparent sealing cavity 21 and the pipeline and the connecting rod 20 to ensure sealing.

[0044] Preferably, the fixed block 18 and the movable block 19 can select corresponding clamping structures according to different workpieces, so that the fixation of the workpiece is more stable and the accuracy of the sealing performance detection is improved.

[0045] Furthermore, a sprayer 16 is provided in the transparent sealing cavity 15 to visually observe the effectiveness of the seal.

[0046] In summary, this multifunctional sealing test bench can realize multi-dimensional vibration, can realize multivariable sealing measurement under vibration, variable temperature and variable pressure environment, effectively simulate the actual installation status of various special shapes, and through vibration, can help select seals and fasteners and reduce the test cost of durable selection in actual application.

[0047] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and technical features of the present application. For those skilled in the art, solutions or features that belong to the prior art or common knowledge are not described in detail in the above embodiments.

[0048] In addition, the technical solutions of the present application are not limited to the above-mentioned embodiments. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A multifunctional sealing detection test bench, comprising a base (1), characterized in that: A multi-dimensional vibration table is arranged at the upper end of the base (1); a fixing device and a transparent sealed cavity (15) are arranged at the upper end of the multi-dimensional vibration table; the fixing device is arranged in the transparent sealed cavity (15); a pipeline is connected to the transparent sealed cavity (15); the pipeline and the transparent sealed cavity (15) form a closed loop; a test medium generating device is arranged on the pipeline; the test medium generating device comprises a pump (10), a high-pressure pressure vessel (9), a switch valve (8), a pressure detector (7), a temperature detector (6), a filter (11), a low-pressure pressure vessel (12) and two high-precision flow The pump (10) is connected to an air inlet pipeline (14) at one end and to an air outlet pipeline (13) at the other end. The air inlet pipeline (14) and the air outlet pipeline (13) together constitute the pipeline. The air inlet pipeline (14) is provided with a high-pressure pressure vessel (9), a switch valve (8), a pressure detector (7), a temperature detector (6) and a high-precision flow meter (5) in sequence. The air outlet pipeline (13) is provided with a filter (11), a low-pressure pressure vessel (12) and another high-precision flow meter (5) in sequence. The air outlet pipeline (13) and the air inlet pipeline (14) are connected to each other. Both ends are arranged in a transparent sealed cavity (15), and a connecting piece for connecting a workpiece is arranged at the end; the multi-dimensional vibration table includes a front and rear vibration plate (2) for front and rear vibration, the front and rear vibration plate (2) is arranged at the upper end of the base (1), the front and rear vibration plates (2) are provided with left and right vibration plates (3) for left and right vibration, and a detection table (4) for up and down vibration is arranged above the left and right vibration plates (3); the fixing device includes a servo motor (24), the servo motor (24) is arranged on one side of the upper end of the detection table (4), and the other side of the upper end of the detection table (4) is fixed A fixed block (18) is provided, the servo motor (24) is connected to one end of a transmission screw (22), the other end of the transmission screw (22) is connected to a bearing (21), the bearing (21) is fixed to the upper end of the detection platform (4), a slideway (26) is provided on the detection platform (4), a slider (23) is provided on the slideway (26), the slider (23) is threadedly connected to the transmission screw (22), the slider (23) is fixedly connected to a moving block (19) through a connecting rod (20), and the moving block (19) is provided on a slideway (25) on the detection platform (4); The front and rear vibration plates (2) are movably arranged on the base (1); a cam 2 (36) is arranged on one side of the front and rear vibration plates (2) and a return spring is arranged on the other side; the cam 2 (36) is driven by a servo motor 3 (39); The left and right vibration plates (3) are movably arranged on the front and rear vibration plates (2); a cam 1 (32) is arranged on one side of the left and right vibration plates (3) and a return spring is arranged on the other side; the cam 1 (32) is driven by a servo motor 2 (35); The detection platform (4) is connected to the left and right vibration plates (3) via spring steel plates (27), at least two groups of spring steel plates (27) are provided, and corresponding iron blocks (29) and electromagnets (28) are provided between the detection platform (4) and the left and right vibration plates (3).

2. A multifunctional sealing detection test bench according to claim 1, characterized in that: Sealing rings are installed at the contact ports between the transparent sealing cavity (15) and the pipeline.

3. A multifunctional sealing detection test bench according to claim 1, characterized in that: A sprayer (16) is arranged in the transparent sealed cavity (15).

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