RP-3 medium high and low pressure automatic test equipment and automatic test method

Abstract

The invention discloses RP-3 medium high and low pressure automatic test equipment and an automatic test method, and the equipment comprises an integrated test unit which is used for carrying out a 0-5 bar low pressure test, a 5-30 bar medium pressure test and a 30-600 bar high pressure test by using an RP-3 medium and comprises a pressure adjustment module; the control unit is respectively connected with the integrated test unit and the upper computer database and is used for receiving test related instructions and parameters and controlling the operation of the integrated test unit; the pressure feedback unit is respectively connected with the integrated test unit and the control unit and is used for acquiring a pressure signal and feeding back the pressure signal to the control unit; and the anti-explosion thermal management unit is used for regulating and controlling the oil temperature and the gas temperature in the equipment in the testing process. According to some embodiments of the invention, by arranging the integrated test unit integrating low, middle and high pressure tests, the control unit connected with the upper computer database, the pressure feedback unit and the anti-explosion thermal management unit, integrated automatic test can be realized in a large pressure range, and the test precision and efficiency are improved.

Description

Technical Field

[0001] This disclosure generally relates to the field of testing equipment technology. More specifically, this disclosure relates to an automatic testing device and method for high and low pressure RP-3 media. Background Technology

[0002] Currently, pressure testing equipment for RP-3 media typically separates low-pressure and high-pressure testing. When the pressure is below 150 kPa, low-pressure testing can only be achieved manually using a hand-cranked pump. This results in unstable pressure control, easy pressure overshoot, and requires multiple operations to stabilize the pressure. Furthermore, it prevents the control system from being integrated with the database. When the pressure is above 20 MPa, high-pressure testing can only be performed manually using a pressure-reducing valve. This pressure adjustment time is too long, and for prolonged pressure holding conditions, operators must be present on-site to ensure pressure stability. This leads to complex testing procedures, the need for multiple operators per unit, and slow digitization progress.

[0003] In view of this, there is an urgent need to provide an automatic testing device and method for high and low pressure of RP-3 medium, so as to achieve integrated automatic testing over a wide pressure range and improve testing accuracy and efficiency. Summary of the Invention

[0004] In order to at least address one or more of the technical problems mentioned above, this disclosure presents, in several aspects, an automatic testing device and automatic testing method for RP-3 medium high and low pressure.

[0005] In a first aspect, this disclosure provides an automatic high and low pressure testing device for RP-3 medium, comprising: an integrated testing unit for performing low-pressure tests of less than 5 bar, medium-pressure tests of 5 to 30 bar, and high-pressure tests of greater than 30 bar but less than 600 bar using RP-3 medium, the unit including a pressure regulating module; a control unit connected to the integrated testing unit and a host computer database, for receiving test-related instructions and parameters and controlling the operation of the integrated testing unit; a pressure feedback unit connected to the integrated testing unit and the control unit, for acquiring pressure signals and feeding them back to the control unit; and an explosion-proof thermal management unit for regulating the oil temperature and the internal gas temperature of the equipment during the testing process.

[0006] In some embodiments, the integrated test unit includes a low-pressure actuator, the pressure regulation module includes a pneumatic pressure regulating cabinet, and the pressure feedback unit includes a first control valve group. The output end of the pneumatic pressure regulating cabinet is connected to the input end of the low-pressure actuator to regulate the gas pressure. The low-pressure actuator is used to convert the gas pressure into oil pressure. The acquisition end of the first control valve group is connected to the pipeline between the low-pressure actuator and the product under test, and the output end of the first control valve group is connected to the control unit.

[0007] In some embodiments, the pressure regulating module includes a motor pump group, an accumulator, a pressure holding valve group, and a pressure reducing valve group. The output end of the motor pump group is connected to the input end of the accumulator, the output end of the accumulator is connected to the input end of the pressure holding valve group, the output end of the pressure holding valve group is connected to the input end of the pressure reducing valve group, and the output end of the pressure reducing valve group is connected to the product under test. The pressure feedback unit includes a first measurement and control valve group. The acquisition end of the first measurement and control valve group is connected to the pipeline between the pressure reducing valve group and the product under test, and the output end of the first measurement and control valve group is connected to the control unit.

[0008] In some embodiments, the pressure regulating module includes a pneumatic pressure regulating cabinet and an air pump. The output end of the pneumatic pressure regulating cabinet is connected to the inlet of the air pump, and the outlet of the air pump is connected to the product under test. The pressure feedback unit includes a second control valve group. The acquisition end of the second control valve group is connected to the pipeline between the outlet of the air pump and the product under test, and the output end of the second control valve group is connected to the control unit.

[0009] In some embodiments, the system also includes an operation interface panel, with an industrial control all-in-one machine in the middle area, a card reader and a barcode scanner in the left area, a button box and a sampling component in the right area, and a test port in the lower area.

[0010] In some embodiments, an oil tank is provided below the operation interface panel, an oil filter is provided in the central area of ​​the oil tank, and the oil outlet of the oil tank is connected to the oil tank.

[0011] In some embodiments, a cooling fan and a status light are provided on the top of the device. The cooling fan is connected to the internal cavity of the device, and the status light is electrically connected to the control unit.

[0012] In some embodiments, the device also includes an electrical control cabinet and an integrated oil pump. The electrical control cabinet is integrated and installed inside the device and has an external power interface. The oil suction end of the integrated oil pump is connected to the internal oil circuit of the device.

[0013] In a second aspect, this disclosure provides an automatic high and low pressure testing method for RP-3 medium, which is executed using the automatic high and low pressure testing equipment for RP-3 medium according to the first aspect and several embodiments. The automatic high and low pressure testing equipment for RP-3 medium further includes an operating component, an input component, and an information acquisition component. The method includes the following steps: S1: Start the equipment through the operating component, collect basic information of the test object using the information acquisition component, and input test parameters through the input component or import test parameters from the host computer database; S2: The control unit determines the test pressure level according to the test parameters and controls the operation of the corresponding pressure regulation module; S3: The integrated test unit outputs RP-3 medium at the corresponding pressure for testing, and the pressure feedback unit collects the pressure signal in real time and feeds it back to the control unit; S4: The control unit performs closed-loop control of the pressure regulation module according to the feedback pressure signal, while the explosion-proof thermal management unit regulates the oil temperature and the internal gas temperature of the equipment; S5: After the test is completed, the control unit uploads the test data to the host computer database to complete the test.

[0014] In some embodiments, the integrated testing unit includes a low-pressure testing module, which includes a low-pressure actuator. The pressure regulating module includes a pneumatic pressure regulating cabinet, and the pressure feedback unit includes a first control valve group. When the test pressure level is low in step S2, the pneumatic pressure regulating cabinet is controlled to output a set air pressure. The air pressure is converted into oil pressure by the low-pressure actuator. The first control valve group collects the oil pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation of the pneumatic pressure regulating cabinet.

[0015] In some embodiments, the pressure regulating module includes a motor pump group, an accumulator, a pressure holding valve group, and a pressure reducing valve group. The pressure feedback unit includes a first control valve group. When the test pressure level in step S2 is medium pressure, the motor pump group is controlled to start and output oil. After the oil is pressure held by the accumulator and the pressure holding valve group, it is adjusted to the required pressure through the pressure reducing valve group. The first control valve group collects the oil pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation of the motor pump group or the pressure reducing valve group.

[0016] In some embodiments, the pressure regulation module includes a pneumatic pressure regulating cabinet and an air pump. In step S2, when the test pressure level is high pressure, the pneumatic pressure regulating cabinet is controlled to adjust the inlet air pressure of the air pump. The air pump starts to increase the output air pressure and supplies the air pressure to the product under test for testing. The second measurement and control valve group collects the air pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation of the pneumatic pressure regulating cabinet.

[0017] In some embodiments, the test parameters in step S1 include at least one of test pressure, pressure increase rate, pressure holding time, and pressure decrease rate; the operating component is a button box; the information acquisition component is a barcode scanner; and the input component is an industrial control all-in-one computer or a keyboard.

[0018] The RP-3 medium high and low pressure automatic testing equipment and automatic testing method provided above, through the integrated testing unit that integrates low, medium and high pressure testing, the control unit connected to the host computer database, the pressure feedback unit and the explosion-proof thermal management unit, cover the pressure testing range of 0-600 bar, and can realize integrated automatic testing within a large pressure range, thereby improving testing accuracy and efficiency. Attached Figure Description

[0019] The above and other objects, features, and advantages of exemplary embodiments of this disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein: Figure 1 An exemplary front view of the RP-3 medium high and low pressure automatic test apparatus according to some embodiments of this disclosure is shown; Figure 2 An exemplary rear view of the RP-3 medium high and low pressure automatic test apparatus according to some embodiments of this disclosure is shown; Figure 3 An exemplary top view of the RP-3 medium high and low pressure automatic testing device according to some embodiments of this disclosure is shown; Figure 4 An exemplary perspective view of the RP-3 dielectric high and low pressure automatic testing device according to some embodiments of this disclosure is shown; Figure 5 An exemplary flowchart of an automated high and low pressure testing method for RP-3 media, representing some embodiments of this disclosure, is shown. Detailed Implementation

[0020] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0021] It should be understood that the terms “comprising” and “including” used in this disclosure and claims indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0022] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0023] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0024] This disclosure provides an RP-3 medium high and low pressure automatic testing device, which covers a pressure testing range of 0-600 bar by setting up an integrated testing unit that integrates low, medium and high pressure testing, a control unit connected to a host computer database, a pressure feedback unit and an explosion-proof thermal management unit. It can achieve integrated automatic testing within a large pressure range and improve testing accuracy and efficiency.

[0025] The specific embodiments disclosed herein will now be described in detail with reference to the accompanying drawings.

[0026] See Figures 1 to 4 , Figure 1 An exemplary front view of the RP-3 medium high and low pressure automatic test apparatus according to some embodiments of this disclosure is shown. Figure 2 An exemplary rear view of the RP-3 medium high and low pressure automatic test apparatus according to some embodiments of this disclosure is shown. Figure 3 An exemplary top view of the RP-3 medium high and low pressure automatic testing apparatus according to some embodiments of this disclosure is shown. Figure 4 An exemplary perspective view of an RP-3 medium high and low pressure automatic testing device according to some embodiments of this disclosure is shown.

[0027] The RP-3 medium high and low pressure automatic testing equipment disclosed in some embodiments includes an integrated testing unit, a control unit, a pressure feedback unit, and an explosion-proof thermal management unit. The integrated testing unit is used for performing low-pressure tests (less than 5 bar), medium-pressure tests (5 to 30 bar), and high-pressure tests (greater than 30 bar but less than or equal to 600 bar) using RP-3 medium, and includes a pressure regulation module. The control unit is connected to both the integrated testing unit and a host computer database, and is used to receive test-related instructions and parameters and control the operation of the integrated testing unit. The pressure feedback unit is connected to both the integrated testing unit and the control unit, and is used to collect pressure signals and feed them back to the control unit. The explosion-proof thermal management unit is used to regulate the oil temperature and the internal gas temperature of the equipment during the testing process.

[0028] The integrated test unit's pressure regulation module switches between different pressure levels during testing, allowing for the switching of the corresponding test medium supply path according to testing requirements. It can include multiple pressure sources and pressure conversion valve assemblies. The control unit includes a programmable logic controller (PLC) and other electrical control modules, whose connection to the host computer database enables real-time interaction and storage of test data. The pressure feedback unit is electrically connected to the control unit and collects the oil pressure in the test circuit of the device under test (DUT) through a pressure testing element to form a closed-loop loop for negative feedback control, ensuring precise pressure control. The explosion-proof thermal management unit includes a heat exchanger 112 and / or a cooling fan 215, among other heat dissipation components. For RP-3 media, the integrated heat exchanger 112 and fan within the explosion-proof thermal management unit respectively regulate the oil temperature and the internal gas temperature of the equipment, preventing the medium from affecting test results due to abnormal temperature, while also meeting explosion-proof requirements.

[0029] In this embodiment, the integrated testing unit includes a low-pressure actuator 110, the pressure regulation module includes a pneumatic pressure regulating cabinet 19, and the pressure feedback unit includes a first control valve group 13. The output end of the pneumatic pressure regulating cabinet 19 is connected to the input end of the low-pressure actuator 110 to regulate the gas pressure. The low-pressure actuator 110 is used to convert the gas pressure into oil pressure. The acquisition end of the first control valve group 13 is connected to the pipeline between the low-pressure actuator 110 and the product under test. The output end of the first control valve group 13 is connected to the control unit.

[0030] Specifically, the pneumatic pressure regulating cabinet 19 may be equipped with a pneumatic proportional valve, which is used to precisely regulate the gas pressure within a low-pressure range such as 0 to 5 bar. The low-pressure actuator 110 is used to convert the gas pressure into oil pressure to meet the low-pressure testing requirements of RP-3 medium. The first control valve group 13 is used to connect to the test circuit of the test piece to collect pressure signals and feed them back to the control unit. The output end of the pneumatic pressure regulating cabinet 19 is connected to the input end of the low-pressure actuator 110 through a pneumatic pipeline. The acquisition end of the first control valve group 13 is connected to the test circuit between the low-pressure actuator 110 and the test piece to capture oil pressure change data in real time. The output end is electrically connected to the signal receiving interface of the control unit through a cable, forming a complete low-pressure closed-loop control circuit. This avoids the problems of unstable pressure and easy overshoot in the existing manual pressurization test scheme with hand pumps. The low-pressure pressure can be stabilized within the set range without multiple manual adjustments, which greatly improves the control accuracy and operation efficiency of low-pressure testing.

[0031] Further or optionally, the pressure regulating module includes a motor pump group 11, an accumulator 16, a pressure holding valve group, and a pressure reducing valve group 15. The output end of the motor pump group 11 is connected to the input end of the accumulator 16, the output end of the accumulator 16 is connected to the input end of the pressure holding valve group, the output end of the pressure holding valve group is connected to the input end of the pressure reducing valve group 15, and the output end of the pressure reducing valve group 15 is connected to the product under test. The pressure feedback unit includes a first measurement and control valve group 13. The acquisition end of the first measurement and control valve group 13 is connected to the pipeline between the pressure reducing valve group 15 and the product under test, and the output end of the first measurement and control valve group 13 is connected to the control unit.

[0032] The motor-pump assembly 11 includes an unloading device that controls the starting pressure to within 2 bar, preventing damage to components from starting impact. The accumulator 16 absorbs oil pressure fluctuations, acting as a pressure stabilizer. The pressure-holding valve assembly maintains pressure stability in the primary circuit, preventing pressure decay. The pressure-reducing valve assembly 15 further adjusts the oil pressure after pressure holding to the precise value required for medium-pressure testing. The outlet of the motor-pump assembly 11 is connected to the input of the accumulator 16 via a high-pressure pipeline. The output of the accumulator 16 is connected to the input of the pressure-holding valve assembly, and the output of the pressure-holding valve assembly is connected to the inlet of the pressure-reducing valve assembly 15. The outlet of the pressure-reducing valve assembly 15 is directly connected to the test interface of the product under test. The acquisition end of the first measurement and control valve assembly 13 is connected to the pipeline between the outlet of the pressure-reducing valve assembly 15 and the product under test to ensure that the acquired pressure signal is the final test pressure. The output end is electrically connected to the control unit. Thus, the complete medium-pressure test circuit features multi-stage pressure control, significantly improving pressure stability. The accumulator 16 is designed to meet the requirements of long-term pressure maintenance without the need for on-site monitoring by operators, thus reducing labor costs and shortening the pressure regulation time.

[0033] Further or optionally, the pressure regulating module includes a pneumatic pressure regulating cabinet 19 and an air pump 17. The output end of the pneumatic pressure regulating cabinet 19 is connected to the inlet of the air pump 17, and the outlet of the air pump 17 is connected to the product under test. The pressure feedback unit includes a second control valve group 14. The acquisition end of the second control valve group 14 is connected to the pipeline between the outlet of the air pump 17 and the product under test, and the output end of the second control valve group 14 is connected to the control unit.

[0034] The pneumatic pressure regulating cabinet 19 is used for pressure regulation during high-pressure testing, and the air pump 17 is the high-pressure power source for outputting high-pressure gas. The second control valve group 14 is used to acquire high-pressure signals. The output end of the pneumatic pressure regulating cabinet 19 is connected to the inlet of the air pump 17 via a high-pressure gas pipe, and the outlet of the air pump 17 is connected to the product under test via a pipeline. The acquisition end of the second control valve group 14 is connected to the pipeline between the outlet of the air pump 17 and the product under test, and the output end is connected to the high-pressure signal receiving port of the control unit, forming a closed-loop control circuit for high-pressure testing. This achieves feedback control for high-pressure testing, ensuring high-pressure stability through closed-loop feedback, avoiding pressure fluctuations from affecting test results, and improving the accuracy and safety of high-pressure testing.

[0035] See you again Figure 1 and Figure 4 In this embodiment, the system also includes an operation interface panel 29. The central area of ​​the operation interface panel 29 houses an industrial control all-in-one computer 26, the left side houses a card reader 28 and a barcode scanner 27, the right side houses a button box 24 and a sampling component 22, and the lower area houses a test port 211. The industrial control all-in-one computer 26 is the core operation and data display terminal of the equipment, capable of parameter input, test status monitoring, and data viewing. The card reader 28 is used to verify operator permissions and prevent unauthorized operation. The barcode scanner 27 is used to quickly collect basic information such as the model and serial number of the tested component, improving information entry efficiency. The button box 24 may include shortcut operation buttons such as start, stop, and emergency stop. The sampling component 22 is used to sample and test the RP-3 medium during the test to ensure medium quality. The test port 211 is the connection interface between the equipment and the product under test. In this embodiment, three test ports 211 can be set to correspond to high, medium, and low testing requirements respectively.

[0036] Specifically, the equipment includes a frame with a panel connected to the front. An industrial control all-in-one computer 26 is embedded in the middle of the panel and electrically connected to the control unit via internal cables. A card reader 28 and a barcode scanner 27 are mounted side-by-side on the left side of the panel and connected to the control unit via data cables. A button box 24 and a sampling assembly 22 are fixed on the right side, with the signal output of the button box 24 connected to the control interface of the control unit. Test ports 211 are evenly distributed in the lower area of ​​the panel, each equipped with a sealed connector and connected to the low-pressure, medium-pressure, and high-pressure test circuits via internal piping. This partitioned layout clearly defines the functions of the operating area, allowing operators to operate efficiently according to procedures, reducing operational errors, and improving the convenience and standardization of testing.

[0037] Further, or optionally, an oil tank 214 is provided below the operation interface panel 29, and an oil filter 213 is provided in the central area of ​​the oil tank 214. The oil outlet of the oil tank 214 is connected to the oil tank. The combination of the oil tank 214 and the oil filter 213 is used for the recovery and purification of the test oil. The oil tank 214 is fixedly installed below the operation interface panel 29 and can be connected to the oil tank inlet of the equipment through a return pipeline. The oil filter 213 can be a detachable filter element, which is installed in the oil tank 214. When the oil flows back, it must pass through the filtration channel of the oil filter 213 before entering the return pipeline. In this way, the test oil can be recycled and reused, avoiding oil waste. The oil filter 213 can effectively filter impurities, particulate matter and other contaminants in the oil, preventing contaminants from entering the oil tank and clogging the internal oil passages or wear parts of the equipment, reducing the probability of equipment failure, extending the service life of the equipment, and ensuring the cleanliness of the oil used for subsequent tests, avoiding the impact of oil contamination on test accuracy.

[0038] See you again Figure 3The device is equipped with a cooling fan 215 and a status light 23 on its top. The cooling fan 215 is connected to the internal cavity of the device, and the status light 23 is electrically connected to the control unit. The cooling fan 215 and status light 23 are auxiliary functional components of the device. The cooling fan 215 is used for heat dissipation and cooling, while the status light 23 is connected to the control unit to indicate the operating status. The cooling fan 215 is embedded in the ventilation opening on the top of the device, which is connected to the internal cavity of the device. After activation, it drives the air inside the device to circulate with the outside. The status light 23 can be a multi-color alarm light, which is fixedly installed on the top of the device. Its signal input terminal is electrically connected to the status output interface of the control unit via a cable. The control unit can output different control signals according to the operating status of the device to switch the color of the status light 23. Thus, the cooling fan 215 can quickly dissipate the heat generated by the internal components during the operation of the device, preventing excessive internal temperature from causing component performance degradation or damage, and ensuring stable operation of the device within a suitable temperature range. The status light 23 uses different colors to intuitively reflect the equipment status, allowing operators to quickly grasp the equipment status without having to look closely at the industrial control all-in-one computer 26, reducing the difficulty of operation. At the same time, the fault alarm status can promptly remind operators to handle abnormalities, improving operational safety.

[0039] Further, or optionally, the system also includes an electrical control cabinet 111 and an integrated oil pump 18. The control unit is integrated and installed inside the electrical control cabinet 111, which has a reserved external power interface. The suction end of the integrated oil pump 18 is connected to the internal oil circuit of the equipment. The electrical control cabinet 111 is a closed cabinet, integrated and installed within a frame. The cabinet integrates electrical components such as control units, power switches, relays, and terminals. The reserved 380VAC external power interface is located on the interface panel on the side of the equipment and is connected to the power input terminal of the electrical control cabinet 111 via an internal cable. The integrated oil pump 18 is fixedly installed beside the oil circuit inside the equipment. Its suction end is connected to the main oil circuit inside the equipment via a suction pipe. The pump's control switch can be set independently or connected to the auxiliary power supply circuit of the electrical control cabinet 111. Thus, the integrated installation of the electrical control cabinet 111 saves external installation space, and the reserved standard power interface facilitates connection of the equipment to the on-site power supply system, ensuring a stable and reliable power supply. The integrated oil pump 18 is specifically designed for draining oil during equipment maintenance. It eliminates the need for additional external oil pumping tools, simplifying the maintenance process. Operators only need to start the integrated oil pump 18 to quickly drain the internal oil, improving the convenience of equipment maintenance and reducing maintenance costs and time.

[0040] See Figure 5 , Figure 5An exemplary flowchart of an automatic high and low pressure testing method for RP-3 media according to some embodiments of this disclosure is shown. Some embodiments of this disclosure also provide an automatic high and low pressure testing method for RP-3 media based on the above-described device, wherein the device includes an operating component, an input component, and an information acquisition component. The method includes the following steps: S1: Start the device through the operating component, collect basic information of the test object using the information acquisition component, and input test parameters through the input component or import test parameters from a host computer database; S2: The control unit determines the test pressure level according to the test parameters and controls the corresponding pressure regulation module to operate; S3: The integrated test unit outputs RP-3 media at the corresponding pressure for testing, and the pressure feedback unit collects the pressure signal in real time and feeds it back to the control unit; S4: The control unit performs closed-loop control of the pressure regulation module according to the feedback pressure signal, while the explosion-proof thermal management unit regulates the oil temperature and the internal gas temperature of the device; S5: After the test is completed, the control unit uploads the test data to the host computer database to complete the test.

[0041] In step S1 of this testing method, the operating component, information acquisition component, input component, and control unit are sequentially connected to form an operation control loop. The start signal, test item information, and test parameters are all transmitted to the control unit through their respective components, automating the pre-test preparation and replacing the traditional manual data entry and parameter setting method, thus reducing human error. In step S2, the control unit can automatically identify the test pressure level through a preset program, eliminating the need for manual switching of test modules and simplifying the operation process. In step S3, the integrated test unit accurately outputs the corresponding pressure of RP-3 medium according to the control command, and the real-time acquisition by the pressure feedback unit ensures the accuracy of the pressure data. In step S4, the closed-loop control mechanism enables the control unit to adjust the operating parameters of the pressure regulation module in real time based on the pressure feedback signal, ensuring stable test pressure. Simultaneously, the synchronous operation of the explosion-proof thermal management unit provides a stable temperature environment for the test, preventing temperature factors from affecting the test results. In step S5, the test data is automatically uploaded to the host computer database, achieving centralized storage, management, and traceability of data, solving the problems of slow digitization and scattered, difficult-to-manage data in existing technologies. This method has a high degree of automation, which greatly reduces the number of manual intervention steps, thereby improving testing efficiency and ensuring the reliability and consistency of test data.

[0042] Further or optionally, when the integrated test unit includes a low-pressure test module, the low-pressure test module includes a low-pressure actuator 110, the pressure regulation module includes a pneumatic pressure regulating cabinet 19, and the pressure feedback unit includes a first control valve group 13, when the test pressure level in step S2 is low pressure, the pneumatic pressure regulating cabinet 19 is controlled to output a set air pressure. The air pressure is converted into oil pressure by the low-pressure actuator 110. The first control valve group 13 collects the oil pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation of the pneumatic pressure regulating cabinet 19.

[0043] Specifically, during the execution of step S2, the control unit outputs a pressure control signal to the pneumatic pressure regulating cabinet 19 according to the preset low-pressure test parameters. The pneumatic proportional valve inside the pneumatic pressure regulating cabinet 19 precisely adjusts the output pressure according to the signal to ensure that the pressure is stable within the set range. The output pressure is transmitted to the low-pressure actuator 110 through pipelines. The conversion mechanism inside the low-pressure actuator 110 converts the gas pressure into an oil pressure of 0 to 5 bar. The oil is further transported to the product under test through pipelines. The first test and control valve group 13 collects the oil pressure signal at the inlet of the product under test in real time and converts it into an electrical signal to be fed back to the control unit. The control unit compares the feedback signal with the preset pressure value. If there is a deviation, it immediately outputs an adjustment signal to the pneumatic pressure regulating cabinet 19 to adjust its output pressure until the oil pressure is stable at the preset value. This process design replaces the traditional manual pressurization method with an automatic adjustment test method, avoiding problems such as pressure overshoot and instability, greatly improving the pressure control accuracy of low-pressure testing. At the same time, it eliminates the need for repeated adjustments by operators, shortens the test time, and improves test efficiency.

[0044] Further or optionally, when the pressure regulating module includes a motor pump group 11, an accumulator 16, a pressure holding valve group and a pressure reducing valve group 15, and the pressure feedback unit includes a first control valve group 13, when the test pressure level in step S2 is medium pressure, the motor pump group 11 is controlled to start outputting oil. After the oil is pressure held by the accumulator 16 and the pressure holding valve group, it is adjusted to the required pressure through the pressure reducing valve group 15. The first control valve group 13 collects the oil pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation of the motor pump group 11 or the pressure reducing valve group 15.

[0045] During step S2, the control unit starts the motor pump group 11, and the unloading device keeps the starting pressure of the motor pump group 11 below 2 bar to avoid starting shock. The oil output from the motor pump group 11 first enters the accumulator 16, which absorbs oil pressure fluctuations and stabilizes the pressure. The oil then flows through the pressure holding valve group, which forms a primary pressure holding circuit after closing, preventing rapid pressure decay. The pressure-held oil then enters the pressure reducing valve group 15, which precisely adjusts the oil pressure to the required pressure of 5 to 30 bar before delivering it to the product under test. The first measurement and control valve group 13 collects the pressure signal at the inlet of the product under test and feeds it back to the control unit. The control unit compares the feedback signal with the preset pressure value. If a deviation exists, it immediately outputs an adjustment signal to the pressure reducing valve group 15 and / or the motor pump group 11 for adjustment. This solves the problems of long pressure adjustment time and unstable pressure holding in existing manual adjustment schemes for medium-pressure testing, meeting the requirements of long-term pressure holding conditions, improving testing efficiency, reducing labor costs, and ensuring the pressure accuracy of medium-pressure testing.

[0046] Further or optionally, when the pressure regulation module includes a pneumatic pressure regulating cabinet 19 and an air pump 17, when the test pressure level in step S2 is high pressure, the pneumatic pressure regulating cabinet 19 is controlled to adjust the inlet air pressure of the air pump 17, the air pump 17 starts to increase the output air pressure, and the air pressure is supplied to the product under test for testing. The second measurement and control valve group 14 collects the high air pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation of the pneumatic pressure regulating cabinet 19.

[0047] During step S2, the control unit outputs an inlet air pressure control signal to the pneumatic pressure regulating cabinet 19, which then adjusts the inlet air pressure to the set accuracy. After the air pump 17 starts, it further adjusts the air pressure, with the high-pressure gas pressure range being 30 to 600 bar, and delivers it to the product under test. The second measurement and control valve group 14 is specifically designed to collect the pressure signal of the high-pressure oil. Because the high-pressure scenario requires higher accuracy and anti-interference capabilities in signal acquisition, it adopts a dedicated design to avoid interference with low and medium-pressure signals. The collected signal is fed back to the control unit. The control unit compares the feedback signal with the preset high-pressure value and adjusts the output pressure accordingly based on the comparison result, achieving closed-loop feedback regulation of the high-pressure. Thus, compared with the existing manual adjustment scheme, the pressure adjustment time is shortened, pressure fluctuations caused by manual operation are avoided, and the closed-loop feedback control ensures the pressure stability and accuracy of the high-pressure test, improving the safety and reliability of the high-pressure test.

[0048] Further, or optionally, the test parameters in step S1 include at least one of test pressure, pressure increase rate, pressure holding time, and pressure decrease rate. The operating component is the button box 24, the information acquisition component is the barcode scanner 27, and the input component is the industrial control all-in-one computer 26 or a keyboard. The test pressure, pressure increase rate, pressure holding time, and pressure decrease rate comprehensively cover the low-pressure, medium-pressure, and high-pressure testing requirements of different products under test, ensuring complete and reliable test results. The start and stop buttons integrated into the button box 24 provide operators with a convenient and quick operating method, allowing for easy control of equipment start and stop without the complex operation of the industrial control all-in-one computer 26. The barcode scanner 27 quickly collects basic information of the tested component by scanning, replacing manual input and improving the efficiency and accuracy of information acquisition. The industrial control all-in-one computer 26 or the keyboard can both be used as input components. The industrial control all-in-one computer 26 can achieve parameter input and visual operation through a touch interface, while the keyboard can be used for inputting numerical and text information, further improving operational flexibility. Thus, it not only meets the parameter setting requirements of different testing scenarios but also reduces operational errors and improves the efficiency of testing work.

[0049] While numerous embodiments of this disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of this disclosure. It should be understood that various alternatives to the embodiments of this disclosure described herein may be employed in the practice of this disclosure. The appended claims are intended to define the scope of this disclosure and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. An automatic high and low pressure testing device for RP-3 medium, characterized in that, include: An integrated test unit is used for low-pressure testing (less than 5 bar), medium-pressure testing (5 to 30 bar), and high-pressure testing (greater than 30 bar but less than 600 bar) using RP-3 media, and includes a pressure regulation module. The control unit is connected to the integrated test unit and the host computer database, respectively, and is used to receive test-related instructions and parameters and control the operation of the integrated test unit. A pressure feedback unit is connected to both the integrated test unit and the control unit, and is used to collect pressure signals and feed them back to the control unit. The explosion-proof thermal management unit is used to regulate the oil temperature and the internal gas temperature of the equipment during the testing process.

2. The RP-3 medium high and low pressure automatic testing equipment according to claim 1, characterized in that, The integrated testing unit includes a low-pressure actuator (110), the pressure regulation module includes a pneumatic pressure regulating cabinet (19), and the pressure feedback unit includes a first control valve group (13). The output end of the pneumatic pressure regulating cabinet (19) is connected to the input end of the low-pressure actuator (110) to regulate the gas pressure. The low-pressure actuator (110) is used to convert the gas pressure into the oil pressure. The acquisition end of the first control valve group (13) is connected to the pipeline between the low-pressure actuator (110) and the product under test. The output end of the first control valve group (13) is connected to the control unit.

3. The RP-3 medium high and low pressure automatic testing equipment according to claim 1, characterized in that, The pressure regulating module includes a motor pump group (11), an accumulator (16), a pressure holding valve group, and a pressure reducing valve group (15). The output end of the motor pump group (11) is connected to the input end of the accumulator (16), the output end of the accumulator (16) is connected to the input end of the pressure holding valve group, the output end of the pressure holding valve group is connected to the input end of the pressure reducing valve group (15), and the output end of the pressure reducing valve group (15) is connected to the product under test. The pressure feedback unit includes a first control valve group (13). The acquisition end of the first control valve group (13) is connected to the pipeline between the pressure reducing valve group (15) and the product under test, and the output end of the first control valve group (13) is connected to the control unit.

4. The RP-3 medium high and low pressure automatic testing equipment according to claim 1, characterized in that, The pressure regulation module includes a pneumatic pressure regulating cabinet (19) and an air pump (17). The output end of the pneumatic pressure regulating cabinet (19) is connected to the inlet of the air pump (17), and the outlet of the air pump (17) is connected to the product under test. The pressure feedback unit includes a second control valve group (14). The acquisition end of the second control valve group (14) is connected to the pipeline between the outlet of the air pump (17) and the product under test, and the output end of the second control valve group (14) is connected to the control unit.

5. The RP-3 medium high and low pressure automatic testing equipment according to claim 1, characterized in that, It also includes an operation interface panel (29), in which an industrial control all-in-one machine (26) is set in the middle area, a card reader (28) and a barcode scanner (27) are set in the left area, a button box (24) and a sampling component (22) are set in the right area, and a test port (211) is set in the lower area.

6. The RP-3 medium high and low pressure automatic testing equipment according to claim 5, characterized in that, An oil tank (214) is provided below the operation interface panel (29), and an oil filter (213) is provided in the central area of ​​the oil tank (214). The oil outlet of the oil tank (214) is connected to the oil tank.

7. The RP-3 medium high and low pressure automatic testing equipment according to claim 1, characterized in that, The device is equipped with a cooling fan (215) and a status light (23) on its top. The cooling fan (215) is connected to the internal cavity of the device, and the status light (23) is electrically connected to the control unit.

8. The RP-3 medium high and low pressure automatic testing equipment according to claim 1, characterized in that, It also includes an electrical control cabinet (111) and an integrated oil pump (18). The electrical control cabinet (111) is integrated and installed inside the equipment. The electrical control cabinet (111) has an external power interface. The oil suction end of the integrated oil pump (18) is connected to the internal oil circuit of the equipment.

9. An automatic testing method for high and low pressure of RP-3 medium, characterized in that, The method is performed using the RP-3 medium high and low pressure automatic testing equipment according to any one of claims 1 to 8, the RP-3 medium high and low pressure automatic testing equipment further comprising an operating component, an input component, and an information acquisition component, and the method includes the following steps: S1: Start the device by operating the component, collect the basic information of the test piece by the information acquisition component, input the test parameters by the input component or import the test parameters from the host computer database; S2: The control unit determines the test pressure level based on the test parameters and controls the corresponding pressure regulation module to operate. S3: The integrated test unit outputs RP-3 medium at the corresponding pressure for testing, and the pressure feedback unit collects the pressure signal in real time and feeds it back to the control unit. S4: The control unit performs closed-loop control of the pressure regulation module based on the feedback pressure signal, while the explosion-proof thermal management unit regulates the oil temperature and the internal gas temperature of the equipment. S5: After the test is completed, the control unit uploads the test data to the host computer database to complete the test.

10. The automatic high and low pressure testing method for RP-3 medium according to claim 9, characterized in that, The integrated test unit includes a low-pressure test module, which includes a low-pressure actuator (110). The pressure regulation module includes a pneumatic pressure regulating cabinet (19). The pressure feedback unit includes a first control valve group (13). When the test pressure level in step S2 is low pressure, the pneumatic pressure regulating cabinet (19) is controlled to output a set air pressure. The air pressure is converted into oil pressure by the low-pressure actuator (110). The first control valve group (13) collects the oil pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation on the pneumatic pressure regulating cabinet (19).

11. The automatic high and low pressure testing method for RP-3 medium according to claim 9, characterized in that, The pressure regulation module includes a motor pump group (11), an accumulator (16), a pressure holding valve group and a pressure reducing valve group (15). The pressure feedback unit includes a first control valve group (13). When the test pressure level in step S2 is medium pressure, the motor pump group (11) is controlled to start outputting oil. After the oil is pressure held by the accumulator (16) and the pressure holding valve group, it is adjusted to the required pressure through the pressure reducing valve group (15). The first control valve group (13) collects the oil pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation on the motor pump group (11) or the pressure reducing valve group (15).

12. The automatic high and low pressure testing method for RP-3 medium according to claim 9, characterized in that, The pressure regulation module includes a pneumatic pressure regulating cabinet (19) and an air pump (17). When the test pressure level in step S2 is high pressure, the pneumatic pressure regulating cabinet (19) is controlled to adjust the inlet air pressure of the air pump (17). The air pump (17) starts to increase the output air pressure. The air pressure is connected to the product under test for testing. The second measurement and control valve group (14) collects the high pressure oil pressure signal and feeds it back to the control unit. The control unit performs closed-loop regulation of the pneumatic pressure regulating cabinet (19).

13. The automatic high and low pressure testing method for RP-3 medium according to claim 9, characterized in that, The test parameters in step S1 include at least one of test pressure, pressure increase rate, pressure holding time and pressure decrease rate. The operation component is a button box (24), the information acquisition component is a barcode scanner (27), and the input component is an industrial control all-in-one machine (26) or a keyboard.

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