Universal hydraulic sealing element reliability test platform, system and method

Abstract

The invention discloses a universal hydraulic sealing element reliability test platform, system and method, and the test platform comprises a hydraulic pump station which is connected with a hydraulic machine through a hydraulic pipeline, and the hydraulic pump station is provided with a first pressure adjustment unit, a first flow adjustment unit and a temperature adjustment unit. And the display and control console is respectively connected with the hydraulic pump station, the hydraulic machine and the hydraulic pipeline through cables, and the display and control console is provided with a stroke control unit, a temperature control unit, a pressure control unit and a speed control unit. And a displacement sensor is arranged on a piston rod of the hydraulic machine. And the hydraulic pipeline is connected with the hydraulic pump station and the hydraulic machine, and a second pressure adjusting unit and a second flow adjusting unit are arranged on the hydraulic pipeline. According to the invention, the reliability test problem of hydraulic sealing elements with series sizes under multiple factors such as oil medium, movement speed, environment temperature, oil pressure and large stroke is solved, and the reliability of the hydraulic sealing elements under different factor conditions can be effectively tested.

Description

Technical Field

[0001] This invention belongs to the field of simulation testing technology, specifically relating to a general-purpose hydraulic seal reliability simulation testing platform, system, and method. Background Technology

[0002] Underwater equipment typically uses hydraulic components as its drive source, providing power to the actuators. These hydraulic components often employ multiple or combined seals to enhance their sealing performance. Improved sealing significantly reduces hydraulic line leakage, thus lowering system energy consumption, maintaining high-performance operation over a longer lifespan, and greatly reducing the probability of underwater equipment exposure due to hydraulic leaks. However, given that hydraulic seals (especially dynamic seals) wear down during use, gradually reducing their sealing performance and thus limiting the lifespan of the underwater equipment, these seals are generally considered lifespan components. Therefore, reliability testing is essential for monitoring the seals' health and facilitating their periodic replacement in underwater equipment.

[0003] Currently, reliability testing of seals for hydraulic components in underwater equipment in China is typically conducted on small pneumatic cylinders. The testing environment is usually at room temperature, driven by low air pressure, with a test stroke of 0m to 1m, resulting in rapid fatigue wear. However, the actual operating environment for hydraulic components is hydraulically driven, with ambient temperatures typically ranging from 20℃ to 50℃ and hydraulic pressures from 4MPa to 20MPa. The reliability simulation test results for small pneumatic cylinders differ significantly from the true reliability values ​​of hydraulic component seals, which is detrimental to the health monitoring and management of hydraulic component seals. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a general-purpose hydraulic seal reliability testing platform, system, and method. This solution addresses the reliability testing of hydraulic seals of various sizes under multiple factors, including oil medium, movement speed, ambient temperature, oil pressure, and large stroke. It effectively tests the reliability of hydraulic seals under different conditions, facilitating health monitoring and periodic replacement of hydraulic seals.

[0005] The objective of this invention is achieved through the following technical solution: providing a general-purpose hydraulic seal reliability testing platform, comprising:

[0006] A hydraulic pump station is connected to a hydraulic press via hydraulic pipelines. The hydraulic pump station is equipped with a first pressure regulating unit, a first flow regulating unit, and a temperature regulating unit.

[0007] A control console is connected to the hydraulic pump station, hydraulic press, and hydraulic pipelines via cables. The control console is equipped with a stroke control unit, a temperature control unit, a pressure control unit, and a speed control unit. The stroke control unit controls and collects the stroke of the hydraulic press; the temperature control unit, pressure control unit, and speed control unit control and collect the temperature, pressure, and flow rate of the oil injected into the hydraulic pump station; and the pressure control unit and speed control unit control and collect the pressure and flow rate of the oil in the hydraulic pipelines.

[0008] A hydraulic press has a displacement sensor installed on the piston rod. The signal collected by the displacement sensor is transmitted to the stroke control unit via a cable.

[0009] The hydraulic pipeline connects the hydraulic pump station and the hydraulic press, and is equipped with a second pressure regulating unit and a second flow regulating unit.

[0010] Preferably, the first pressure regulating unit and the second pressure regulating unit are pressure regulating valves.

[0011] Preferably, the first flow regulating unit and the second flow regulating unit are flow regulating valves.

[0012] Preferably, the temperature control unit employs a cooling system.

[0013] Preferably, the hydraulic press includes: a cylinder assembly, a piston rod, an upper cylinder liner, a piston, a displacement sensor, and an end cap, wherein:

[0014] The cylinder assembly serves as the support unit of the hydraulic press, and the piston rod serves as the motion unit of the hydraulic press.

[0015] The upper cylinder liner and piston serve as assembly units for the hydraulic press, used for installing the seals to be tested.

[0016] The displacement sensor, serving as the closed-loop control feedback unit of the hydraulic press, is mounted on the piston rod.

[0017] The end cap serves as an assembly unit for the hydraulic press, sealing the hydraulic medium within the cavity.

[0018] Preferably, the outer diameter of the cylinder assembly and piston rod is adjustable.

[0019] Preferably, the hydraulic lines include:

[0020] Oil inlet pipe, the oil inlet line connecting the hydraulic pump station and the hydraulic press;

[0021] Return oil pipe, the return oil line connecting the hydraulic pump station and the hydraulic press;

[0022] Drain pipe, the drain pipe connecting the hydraulic pump station and the hydraulic press;

[0023] Both the inlet and return oil pipes are equipped with a second pressure regulating unit and a second flow regulating unit.

[0024] In addition to providing a general-purpose hydraulic seal reliability testing platform, this invention further provides a control system for controlling the aforementioned platform, comprising:

[0025] The display and control module includes a stroke submodule, a temperature control submodule, a pressure submodule, and a speed submodule. Each submodule is connected to the corresponding module via a cable. By inputting control commands, the relevant parameters of each module are adjusted and controlled, and the actual parameters of each module are collected and displayed in the corresponding submodule.

[0026] The hydraulic pump station control module includes a first pressure regulating submodule, a first flow regulating submodule, and a temperature regulating submodule. The first pressure regulating submodule receives instructions from the pressure submodule and controls the first pressure regulating unit to regulate the pressure. The first flow regulating submodule receives instructions from the speed submodule and controls the first flow regulating unit to regulate the flow. The temperature regulating submodule receives instructions from the temperature control submodule and controls the temperature regulating unit to regulate the temperature.

[0027] The hydraulic pipeline adjustment module includes a second pressure adjustment submodule and a second flow adjustment submodule. The second pressure adjustment submodule receives instructions from the pressure submodule and controls the second pressure adjustment unit to adjust the pressure. The second flow adjustment submodule receives instructions from the speed submodule and controls the second flow adjustment unit to adjust the flow rate.

[0028] The hydraulic press control module receives instructions from the stroke submodule, controls the stroke of the hydraulic press, and transmits the stroke information collected by the displacement sensor back to the display and control module in real time.

[0029] The present invention also provides a method for performing reliability testing on hydraulic seals using the above-mentioned general-purpose hydraulic seal reliability testing platform, the method comprising the following steps:

[0030] Step 1: Connect the hydraulic pump station, display console, hydraulic press and hydraulic pipeline. Power on the display console and set the stroke, temperature, pressure and speed of the seal to be tested.

[0031] Step 2: Start the hydraulic pump station, control the first pressure regulating unit to make the pressure value of the hydraulic pump station higher than the set pressure on the display console; adjust the first flow regulating unit to make the total flow of the hydraulic pump station meet the needs of the hydraulic pipeline; wait for the actual temperature of the temperature regulating unit to reach the set temperature.

[0032] Step 3: Adjust the second flow regulating unit to make the actual flow rate in the hydraulic pipeline reach the set speed, monitor the pressure control unit, adjust the second pressure regulating unit to make the actual pressure in the hydraulic pipeline reach the set pressure, install the seal to be tested on the hydraulic press, start the hydraulic seal reliability simulation test, start counting the reliability value of the stroke control unit, and synchronously monitor whether the actual stroke of the stroke control unit matches the set stroke.

[0033] Step 4: When the actual stroke of the stroke control unit differs from the set stroke value by more than a certain value, or when the actual pressure of the pressure control unit differs from the set pressure value by more than a certain value, stop the hydraulic pump station; record the reliability value of the stroke control unit, which is the reliability value of the hydraulic seals of the size series under the stroke, temperature, pressure, speed and oil medium.

[0034] Preferably, in step 3, the seal to be tested is installed on the upper cylinder liner or piston of the hydraulic press.

[0035] Compared with existing technologies, the present invention has the following advantages:

[0036] This invention provides a general-purpose hydraulic seal reliability simulation test platform. It can monitor the oil temperature within hydraulic pipelines to achieve hydraulic drive under ambient temperatures ranging from 20℃ to 50℃. The hydraulic pressure is freely adjustable from 0MPa to 25MPa, and the test stroke is from 0m to 4m. It can simulate the dynamic friction of actual dynamic seals at different speeds, based on the actual oil medium used in hydraulic seals. The reliability test results are close to the true values ​​under operating conditions. Furthermore, this test platform can simultaneously perform reliability tests on both dynamic and static seals for a series of seals of a specific size. Different series of seals only require changing the test cylinder (by altering the cylinder's inner diameter and piston rod's outer diameter).

[0037] This invention proposes a general-purpose hydraulic seal reliability simulation test platform, which solves the reliability testing problem of hydraulic seals of various sizes under multiple factors such as oil medium, movement speed, ambient temperature, oil pressure and large stroke. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the overall architecture of the general-purpose hydraulic seal reliability simulation test platform in an embodiment of the present invention;

[0039] Figure 2 This is a schematic diagram of the hydraulic pump station architecture in an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the display and control console in an embodiment of the present invention;

[0041] Figure 4 This is a schematic diagram of the hydraulic press structure in an embodiment of the present invention;

[0042] Figure 5 This is a schematic diagram of the hydraulic pipeline composition in an embodiment of the present invention.

[0043] In the diagram, 1 is the hydraulic pump station; 2 is the display and control console; 3 is the hydraulic press; 4 is the hydraulic pipeline; 11 is the first pressure regulating valve; 12 is the first flow regulating valve; 13 is the cooling system; 21 is the stroke control unit; 22 is the temperature control unit; 23 is the pressure control unit; 24 is the speed control unit; 25 is the cable; 31 is the cylinder assembly; 32 is the piston rod; 33 is the upper cylinder liner; 34 is the seal to be tested; 35 is the piston; 36 is the displacement sensor; 37 is the end cap; 41 is the second pressure regulating valve; 42 is the second flow regulating valve; 43 is the oil inlet pipe; 44 is the oil return pipe; and 45 is the drain pipe. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0045] like Figure 1 As shown, the technical solution of the present invention provides a general-purpose hydraulic seal reliability testing platform, comprising:

[0046] A hydraulic pump station 1 is connected to a hydraulic press 3 via a hydraulic pipeline 4. The hydraulic pump station 1 is equipped with a first pressure regulating unit, a first flow regulating unit, and a temperature regulating unit.

[0047] A control console 2 is connected to the hydraulic pump station 1, the hydraulic press 3, and the hydraulic pipeline 4 via cables 25. The control console 2 is equipped with a stroke control unit 21, a temperature control unit 22, a pressure control unit 23, and a speed control unit 24. The stroke control unit 21 controls and collects the stroke of the hydraulic press 3; the temperature control unit 22, the pressure control unit 23, and the speed control unit 24 control and collect the temperature, pressure, and flow rate of the oil injected into the hydraulic pump station 1; and the pressure control unit 23 and the speed control unit 24 control and collect the pressure and flow rate of the oil in the hydraulic pipeline 4.

[0048] A hydraulic press 3 has a displacement sensor 36 installed on its piston rod. The signal collected by the displacement sensor 36 is transmitted to the stroke control unit 21 through the cable 25.

[0049] Hydraulic pipeline 4 connects hydraulic pump station 1 and hydraulic press 3. A second pressure regulating unit and a second flow regulating unit are installed on hydraulic pipeline 4.

[0050] In one embodiment of the present invention, a hydraulic pump station 1 for the above-mentioned test platform is provided, specifically as follows: the hydraulic pump station 1 is provided with a first pressure regulating valve 11, a first flow regulating valve 12, and a cooling system 13; wherein, the first pressure regulating valve 11 serves as the pressure regulating unit of the hydraulic pump station 1, which can freely adjust the total pressure P of the hydraulic pump station from 0MPa to 25MPa; the first flow regulating valve 12 serves as the flow regulating unit of the hydraulic pump station 1, which can freely adjust the total flow rate Q of the hydraulic pump station from 0L / min to 150L / min; the cooling system 13 serves as the temperature control unit of the hydraulic pump station 1, which can realize the oil medium temperature within the range of 20℃ to 50℃, simulating the ambient temperature of the hydraulic sealing ring.

[0051] like Figure 3 As shown, in one embodiment of the present invention, an architecture for a display and control console 2 used in the above-mentioned test platform is provided, specifically as follows: The display and control console is equipped with a stroke control unit 21, a temperature control unit 22, a pressure control unit 23, a speed control unit 24, and a cable 25. The stroke control unit 21 can freely set and display the stroke within the range of 0m to 4m to simulate the usage state of the hydraulic seal under a certain stroke, and simultaneously display the reliability value of the hydraulic seal under a certain stroke. The temperature control unit can freely set and display the temperature within the range of 20℃ to 50℃ to simulate the usage state of the hydraulic seal under a certain ambient temperature. The pressure control unit 23 can freely set and display the pressure within the range of 0MPa to 25MPa to simulate the usage state of the hydraulic seal under a certain hydraulic pressure. The speed control unit 24 can freely set and display the speed of the hydraulic seal within a certain speed range to simulate the usage state of the hydraulic seal at a certain speed. The cable 25 serves as the transmission unit of the display and control console 2, enabling the transmission of input / output signals between the various control modules of the display and control console 2 and the connected units.

[0052] like Figure 4As shown, in one embodiment of the present invention, a hydraulic press 3 for the above-mentioned testing platform is provided, specifically as follows: the hydraulic press is provided with a cylinder assembly 31, a piston rod 32, an upper cylinder liner 33, a seal to be tested 34, a piston 35, a displacement sensor 36, an end cap 37, etc.; the cylinder assembly 31 serves as the support unit of the hydraulic press 3, and is designed according to the inner diameter of the cylinder assembly 31 to realize static sealing reliability testing of hydraulic seals of different sizes; the piston rod 32 serves as the motion unit of the hydraulic press 3, and is designed according to the outer diameter of the piston rod 32 to realize dynamic sealing reliability testing of hydraulic seals of different sizes. The upper cylinder liner 33 serves as the assembly unit of the hydraulic press 3, and is used for the installation of hydraulic seals. The seal to be tested 34 serves as the unit to be tested, and is installed on the upper cylinder liner 33 and piston 35 to achieve simultaneous testing of static and dynamic seals of hydraulic seals of a certain size series. The piston 35 serves as the assembly unit of the hydraulic press 3, and is used for the installation of hydraulic seals. The displacement sensor 36 serves as the closed-loop control feedback unit of the hydraulic press 3, and can realize stroke measurement and feedback. The end cap 37 serves as the assembly unit of the hydraulic press 3, and is used for sealing the hydraulic medium in the cavity. Since the structure of the hydraulic press 3 is well known in the art, it will not be described in detail here.

[0053] like Figure 4 As shown, in one embodiment of the present invention, a hydraulic pipeline 4 for the aforementioned test platform is provided, specifically as follows: The hydraulic pipeline 4 includes a second pressure regulating valve 41, a second flow regulating valve 42, an oil inlet pipe 43, an oil return pipe 44, and a drain pipe 45. The second pressure regulating valve 41 serves as the pressure regulating unit of the hydraulic pipeline 4, enabling free adjustment of the pressure of the oil inlet pipe 43 and the oil return pipe 44 from 0 MPa to 25 MPa. The second flow regulating valve 42 serves as the flow regulating unit of the hydraulic pipeline 4, enabling free adjustment of the flow rate of the oil inlet pipe 43 and the oil return pipe 44 from 0 L / min to 150 L / min. The oil inlet pipe 43 serves as the connecting unit of the hydraulic pipeline 4, connecting the hydraulic pump station 1 and the hydraulic press 3 via an oil circuit. The oil return pipe 44 serves as the connecting unit of the hydraulic pipeline 4, connecting the hydraulic pump station 1 and the hydraulic press 3 via an oil circuit. The drain pipe 45 serves as the connecting unit of the hydraulic pipeline 4, connecting the hydraulic pump station 1 and the hydraulic press 3 via an oil circuit.

[0054] In addition to providing a general-purpose hydraulic seal reliability testing platform, the present invention further provides a control system for controlling the aforementioned platform, comprising:

[0055] The display and control module includes a stroke submodule, a temperature control submodule, a pressure submodule, and a speed submodule. Each submodule is connected to the corresponding module via cable 25. By inputting control commands, the relevant parameters of each module are adjusted and controlled, and the actual parameters of each module are collected and displayed in the corresponding submodule.

[0056] The hydraulic pump station control module includes a first pressure regulating submodule, a first flow regulating submodule, and a temperature regulating submodule. The first pressure regulating submodule receives instructions from the pressure submodule and controls the first pressure regulating unit to regulate the pressure. The first flow regulating submodule receives instructions from the speed submodule and controls the first flow regulating unit to regulate the flow. The temperature regulating submodule receives instructions from the temperature control submodule and controls the temperature regulating unit to regulate the temperature.

[0057] The hydraulic pipeline adjustment module includes a second pressure adjustment submodule and a second flow adjustment submodule. The second pressure adjustment submodule receives instructions from the pressure submodule and controls the second pressure adjustment unit to adjust the pressure. The second flow adjustment submodule receives instructions from the speed submodule and controls the second flow adjustment unit to adjust the flow rate.

[0058] The hydraulic press control module receives instructions from the stroke submodule, controls the stroke of the hydraulic press, and transmits the stroke information collected by the displacement sensor back to the display and control module in real time.

[0059] The present invention also provides a method for performing reliability testing on hydraulic seals using the aforementioned general-purpose hydraulic seal reliability testing platform, the method comprising the following steps:

[0060] Step 1, press Figure 1 The requirements are to connect the hydraulic pump station 1, display and control console 2, hydraulic press 3 and hydraulic pipeline 4, power on the display and control console 2, and set the stroke, temperature, pressure and speed of the seal to be tested;

[0061] Step 2: Start the hydraulic pump station 1, adjust the first pressure regulating valve 11 so that its pressure value is higher than the set pressure of the pressure control unit 23; adjust the first flow regulating valve 12 so that its total flow meets the usage requirements of the second flow regulating valve 42 in the oil inlet pipe and the second flow regulating valve 42 in the oil return pipe; wait for the actual temperature of the temperature control unit 22 to reach the set temperature.

[0062] Step 3: Adjust the second flow regulating valve 42 to make the actual speed of the speed control unit 24 reach the set speed, monitor the pressure control unit 23, adjust the second pressure regulating valve 41 to make the actual pressure of the pressure control unit 23 reach the set pressure, start the hydraulic seal reliability simulation test, start counting the reliability value of the stroke control unit 21, and synchronously monitor whether the actual stroke of the stroke control unit 21 matches the set stroke.

[0063] Step 4: When the actual stroke of the stroke control unit 21 differs from the set stroke value by more than a certain value, or when the actual pressure of the pressure control unit 23 differs from the set pressure value by more than a certain value, stop the hydraulic pump station 1. Record the reliability value of the stroke control unit 21, which is the reliability value of the series of hydraulic seals under the given stroke, temperature, pressure, speed, and oil medium. At this point, the reliability test of a series of hydraulic seals under multiple factors including oil medium, movement speed, ambient temperature, oil pressure, and large stroke is completed.

[0064] As a further optimization in the above embodiments, in step 3, the seal to be tested 34 is installed on the upper cylinder liner 31 or piston 35 of the hydraulic press 3. By installing the hydraulic seal to be tested on the upper cylinder liner 33 and piston 25 of the hydraulic press 3, the synchronous reliability simulation test of dynamic seal and static seal is realized.

[0065] The general-purpose hydraulic seal reliability simulation test platform provided in the above embodiments of the present invention can directly inject the hydraulic medium in the hydraulic seal's operating environment into the hydraulic pump station 1, achieve temperature control of the hydraulic medium through the cooling system, adjust the total pressure P through the pressure regulating valve, and adjust the total flow rate Q through the flow regulating valve.

[0066] The general-purpose hydraulic seal reliability simulation test platform provided in the above embodiments of the present invention allows for manual setting of the stroke by the stroke control unit 21 on the display console 2. The actual stroke measured by the displacement sensor 36 inside the hydraulic press 3 is fed back and displayed in the actual stroke column via the cable 25 of the display console 2. The hydraulic press 3 reciprocates N times, and the reliability value column of the stroke control unit 21 displays N. The temperature is manually set by the temperature control unit 22 on the display console 2, controlling the cooling system via the cable 25 to achieve temperature control of the test oil medium, and displaying the oil medium temperature in the actual temperature column. The pressure control unit 23 on the display console 2 is manually set by the pressure, controlling the oil pressure in the inlet pipe 43 and return pipe 44 via the pressure regulating valve via the cable 25 of the display console 2, and feeding back the pressure in the actual pressure column. The speed control unit 24 on the display console 2 is manually set by the speed, controlling the flow rate in the inlet pipe 43 and return pipe 44 via the flow regulating valve via the cable 25 of the display console 2, adjusting the oil medium flow rate, and feeding back the speed in the actual speed column.

[0067] The general-purpose hydraulic seal reliability simulation test platform provided in the above embodiments of the present invention can realize the dynamic and static seal reliability simulation test of hydraulic seals of different sizes by replacing the hydraulic press cylinder assembly 31, piston rod 32, upper cylinder liner 33 and piston 35 of different sizes.

[0068] The above are preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A general-purpose hydraulic seal reliability testing platform, characterized in that: The testing platform includes: A hydraulic pump station (1) is connected to a hydraulic press (3) via a hydraulic pipeline (4). The hydraulic pump station (1) is equipped with a first pressure regulating unit, a first flow regulating unit and a temperature regulating unit. A control console (2) is connected to the hydraulic pump station (1), hydraulic press (3), and hydraulic pipeline (4) via cables (25). The control console (2) is equipped with a stroke control unit (21), a temperature control unit (22), a pressure control unit (23), and a speed control unit (24). The stroke control unit (21) controls and collects the stroke of the hydraulic press (3); the temperature control unit (22), the pressure control unit (23), and the speed control unit (24) control and collect the temperature, pressure, and flow rate of the oil injected into the hydraulic pump station (1); and the pressure control unit (23) and the speed control unit (24) control and collect the pressure and flow rate of the oil in the hydraulic pipeline (4). A hydraulic press (3) has a displacement sensor (36) installed on its piston rod. The signal collected by the displacement sensor (36) is transmitted to the stroke control unit (21) through a cable (25). The hydraulic pipeline (4) connects the hydraulic pump station (1) and the hydraulic press (3), and the hydraulic pipeline (4) is equipped with a second pressure regulating unit and a second flow regulating unit.

2. The universal hydraulic seal reliability testing platform as described in claim 1, characterized in that: The first pressure regulating unit and the second pressure regulating unit are pressure regulating valves.

3. The universal hydraulic seal reliability testing platform as described in claim 1, characterized in that: The first flow regulating unit and the second flow regulating unit employ flow regulating valves.

4. The universal hydraulic seal reliability testing platform as described in claim 1, characterized in that: The temperature control unit employs a cooling system.

5. The universal hydraulic seal reliability testing platform as described in claim 1, characterized in that: The hydraulic press (3) includes: a cylinder assembly (31), a piston rod (32), an upper cylinder liner (33), a piston (35), a displacement sensor (36), and an end cap (37), wherein: The cylinder assembly (31) serves as the support unit of the hydraulic press (3), and the piston rod (32) serves as the motion unit of the hydraulic press (3). The upper cylinder liner (33) and the piston (35) serve as the assembly unit of the hydraulic press (3) for the installation of the seal (34) to be tested; The displacement sensor (36) is used as a closed-loop control feedback unit for the hydraulic press (3) and is mounted on the piston rod (32); The end cap (37) serves as an assembly unit for the hydraulic press (3) and seals the hydraulic medium in the cavity.

6. The universal hydraulic seal reliability testing platform as described in claim 5, characterized in that: The outer diameter of the cylinder assembly (31) and the piston rod (32) is adjustable.

7. The universal hydraulic seal reliability testing platform as described in claim 1, characterized in that: The hydraulic pipeline (4) includes: Oil inlet pipe (43) is the oil inlet pipe connecting the hydraulic pump station (1) and the hydraulic press (3); Return oil pipe (44) is the return oil pipeline connecting the hydraulic pump station (1) and the hydraulic press (3); Drain pipe (45) is a drain pipe connecting the hydraulic pump station (1) and the hydraulic press (3); Both the oil inlet pipe (43) and the oil return pipe (44) are equipped with a second pressure regulating unit and a second flow regulating unit.

8. A general-purpose hydraulic seal reliability testing system, characterized in that: The system is used to control the reliability testing platform according to any one of claims 1-7, the system comprising: The display and control module includes a stroke submodule, a temperature control submodule, a pressure submodule and a speed submodule. Each submodule is connected to the corresponding module via a cable (25). The relevant parameters of each module are adjusted and controlled by input control commands, and the actual parameters of each module are collected and displayed in the corresponding submodule. The hydraulic pump station control module includes a first pressure regulating submodule, a first flow regulating submodule, and a temperature regulating submodule. The first pressure regulating submodule receives instructions from the pressure submodule and controls the first pressure regulating unit to regulate the pressure. The first flow regulating submodule receives instructions from the speed submodule and controls the first flow regulating unit to regulate the flow. The temperature regulating submodule receives instructions from the temperature control submodule and controls the temperature regulating unit to regulate the temperature. The hydraulic pipeline adjustment module includes a second pressure adjustment submodule and a second flow adjustment submodule. The second pressure adjustment submodule receives instructions from the pressure submodule and controls the second pressure adjustment unit to adjust the pressure. The second flow adjustment submodule receives instructions from the speed submodule and controls the second flow adjustment unit to adjust the flow rate. The hydraulic press control module receives instructions from the stroke submodule, controls the stroke of the hydraulic press, and transmits the stroke information collected by the displacement sensor back to the display and control module in real time.

9. A general-purpose hydraulic seal reliability testing method, characterized in that: The reliability test for hydraulic seals is performed using the reliability test described in any one of claims 1-7, the method comprising the following steps: Step 1: Connect the hydraulic pump station (1), display console (2), hydraulic press (3) and hydraulic pipeline (4), power on the display console (2), and set the stroke, temperature, pressure and speed of the seal to be tested (34); Step 2: Start the hydraulic pump station (1), control the first pressure regulating unit to make the pressure value of the hydraulic pump station (1) higher than the set pressure of the display and control panel (2); adjust the first flow regulating unit to make the total flow of the hydraulic pump station (1) meet the usage requirements of the hydraulic pipeline (4); wait for the actual temperature of the temperature regulating unit to reach the set temperature; Step 3: Adjust the second flow regulating unit to make the actual flow rate in the hydraulic pipeline (4) reach the set speed, monitor the pressure control unit (23), adjust the second pressure regulating unit to make the actual pressure in the hydraulic pipeline (4) reach the set pressure, install the seal to be tested (34) on the hydraulic press (3), start the hydraulic seal reliability simulation test, start counting the reliability value of the stroke control unit (21), and synchronously monitor whether the actual stroke of the stroke control unit (21) matches the set stroke. Step 4: When the actual stroke of the stroke control unit (21) differs from the set stroke value by more than a certain value, or when the actual pressure of the pressure control unit (23) differs from the set pressure value by more than a certain value, stop the hydraulic pump station (1); record the reliability value of the stroke control unit (21), which is the reliability value of the hydraulic seals of the size series under the stroke, temperature, pressure, speed and oil medium.

10. The method for testing the reliability of a general-purpose hydraulic seal as described in claim 8, characterized in that: In step 3, the seal to be tested (34) is installed on the upper cylinder liner (31) or the piston (35) of the hydraulic press (3).

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