Aircraft pipeline pressure-resistant cleaning test system

Abstract

The invention discloses an aircraft pipeline pressure-resistant cleaning test system, which belongs to the technical field of hydraulic equipment test, and comprises an onboard function module and a ground function module, and an execution device in the function module is connected with a microcontroller; the oil source and each functional module are connected through a hose or a hard pipe, and the microcontroller receives an instruction of the industrial personal computer through the communication module to control the working states of executive devices in the onboard functional module and the ground functional module so as to gate different pipelines. Flushing and pressure-resistant testing of pipelines under various working conditions are completed in the mode that different functional modules are combined and a modularized pressure-resistant and cleaning system is built, a microcontroller is controlled through a center console via a wireless communication module, and then the working states (such as valve reversing, cutting-off and switching-on) of execution devices in an onboard functional module and a ground functional module are controlled. One-button test pipeline gating connection is realized, so that a pressure-resistant cleaning test of an aircraft pipeline system is realized, and the pressure-resistant and cleaning test efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic equipment testing, and in particular to an aircraft pipeline pressure-resistant cleaning testing system. Background Art

[0002] One of the processes before the test flight of domestic large aircraft is to pressure test and clean all the hydraulic system pipelines on the aircraft. The current method is to connect the inlet and outlet of a certain working condition, pressurize and clean each working condition one by one, and then disassemble and assemble to the next working condition to continue pressure testing and cleaning after the cleaning is completed. This method requires repeated disassembly and assembly of the inlet and outlet, with many processes, long time consumption, and low efficiency, which directly affects the progress and cost of aircraft manufacturing. In addition, the traditional operating steps are complicated and inefficient, and will inevitably cause interface damage, affecting the reliability and safety of the system. In order to improve efficiency, improvement measures such as parallel pressure supply source cleaning pressure supply, merging and optimizing cleaning steps, and connecting cleaning pipelines in series with quick-release self-sealing joints are proposed. These measures can significantly shorten the cleaning cycle and improve efficiency. However, manual disassembly of the inlet and outlet is still required, and the testing efficiency needs to be improved. Summary of the invention

[0003] The purpose of the present invention is to overcome the problems of the prior art and provide an aircraft pipeline pressure cleaning test system.

[0004] The object of the present invention is to achieve the following technical solution: an aircraft pipeline pressure cleaning test system, the system comprising:

[0005] Onboard functional module, integrated with electrical control module;

[0006] A ground function module, integrated with an electrical control module;

[0007] The electrical control module includes a power supply and a circuit board, a microcontroller is integrated on the circuit board, and the actuators in the onboard function module and the ground function module are connected to the microcontroller;

[0008] Measurement and control module, including industrial computer;

[0009] The wireless communication module includes a first communication unit and a second communication unit in communication connection; the first communication unit is connected to the industrial computer and is arranged in the measurement and control module; the second communication unit is connected to the microcontroller and is arranged in the electrical control module or the onboard function module or the ground function module;

[0010] The pipeline module includes several hoses and hard pipes. The oil source, various onboard functional modules, and various ground functional modules are connected through hoses or hard pipes. The microcontroller receives the instructions of the industrial computer through the communication module to control the working status of the actuators in the onboard functional modules and ground functional modules to realize the selection of different pipelines.

[0011] In one example, the onboard functional modules include a fuel tank module, a pressure oil filter module, and a lower rudder actuator. Each onboard functional module is integrated with an electrical control module and a second communication unit. The microcontroller in the electrical control module is connected to the first actuator of each onboard functional module, and the first actuator includes a valve.

[0012] In one example, an on-board component is used to replace an on-board functional module, the installation hole spacing of the on-board component is consistent with that of the original component in the on-board functional module, and the oil port direction of the on-board component is consistent with that of the original component in the on-board functional module.

[0013] In one example, the ground functional module includes a power conversion device, a multi-function spoiler actuator, a slat wingtip brake module, a flap wingtip brake module, a right outer aileron actuator, a leading edge slat power drive unit, a right outer elevator actuator, a backup brake cut-off valve, a ground spoiler control module, a ground spoiler actuator, a load sensing control valve, a load sensing sequential control valve, a main lift up lock, a front lift up lock, a ram air turbine actuator, a front wheel turning ground module, a main lift door actuator cylinder, a main lift retraction actuator cylinder, a front lift retraction actuator cylinder, a front lift down lock actuator cylinder, a front lift door actuator cylinder, a main lift down lock actuator cylinder, a backup brake control valve, a ground return oil cut-off valve, a hoisting ground tooling, and a quick-release ground tooling. Each ground functional module is integrated with an electrical control module and a second communication unit. The microcontroller in the electrical control module is connected to the second actuator of each ground functional module, and the second actuator includes a valve.

[0014] In one example, the onboard functional module is provided with a flow collector and / or a pressure collector, and the ground functional module is provided with a flow collector and / or a pressure collector. The flow collector is used to collect real-time flow information of the onboard functional module and / or the ground functional module, and the pressure collector is used to collect real-time pressure information of the onboard functional module and / or the ground functional module. The flow collector and the pressure collector are connected to a microcontroller.

[0015] In one example, the measurement and control module also has a display, and the display is connected to the industrial computer.

[0016] In one example, the pressure loss of each pipeline section in the pipeline module is calculated based on the length and turning angle of the hose or the hard pipe.

[0017] In one example, the pressure loss calculation formula for the pipeline assembly is:

[0018]

[0019] Among them, v represents the average flow velocity in the tube; d represents the diameter of the tube; λ represents the resistance coefficient along the way; l represents the length of the tube; ρ represents the density of the fluid; ζ represents the local resistance coefficient.

[0020] It should be further explained that the technical features corresponding to the above examples can be combined or replaced with each other to form a new technical solution.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In one example, different functional modules (onboard and ground functional modules) are combined to build a modular pressure-resistant and cleaning system to complete flushing and pressure-resistant tests of pipelines in various working conditions. The microcontroller is controlled by the central console via the wireless communication module to control the working status of the actuators in the onboard functional modules and ground functional modules (such as valve reversing, cutting off, and passage, etc.), to achieve one-button test pipeline selection connection, and one-button pipeline cleaning for different working conditions. The system integrates mechanical, electrical, and hydraulic integrated technologies, and uses wireless communication technology to accurately control the reversing, cutting off, and passage of functional modules to realize various logical combination functions, thereby realizing the pressure-resistant cleaning test of the aircraft pipeline system, greatly improving the efficiency of pressure-resistant and cleaning tests.

[0023] 2. In one example, on-board components are replaced with on-board functional modules. Without changing the installation position and direction of the original components, effective pressure cleaning testing of aircraft pipelines can be achieved, work efficiency is improved, and contamination caused by hydraulic testing can be avoided.

[0024] 3. In one example, by detecting the pressure and flow of different functional modules and feeding back the detected pressure, flow and other information to the display interface of the measurement and control module, it is possible to monitor the pressure and flow of each functional module in real time and promptly judge whether the pressure-resistant cleaning meets the test requirements.

[0025] 4. In one example, the pressure loss of each pipeline section is calculated based on the length and turning angle of the hose or pipe. After judging the pressure loss caused by the change in pipeline diameter, it is possible to determine whether the target pipeline can reach the specified set flow rate under the specified pressure value of each pipeline, thereby achieving the purpose of pipeline flushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific implementation methods of the present invention are further described in detail below in conjunction with the accompanying drawings. The accompanying drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The same reference numerals are used in these drawings to represent the same or similar parts. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0027] Figure 1 A system block diagram provided for an example of the present invention;

[0028] Figure 2 A schematic diagram of an electrical control module provided for an example of the present invention;

[0029] Figure 3 A schematic diagram of the piano cabinet structure provided as an example of the present invention;

[0030] Figure 4 A schematic diagram of a hose structure provided for an example of the present invention;

[0031] Figure 5 A schematic diagram of the structure of a fuel tank module provided as an example of the present invention;

[0032] Figure 6 A schematic diagram of the oil circulation path in the left main lift upper lock pipeline cleaning condition provided as an example of the present invention.

[0033] In the figure: 11-mobile power supply, 12-circuit board, 13-electrical housing, 14-antenna, 15-reserved plug; 2-piano cabinet; 21-stand; 22-travel wheel; 23-display; 24-pressure gauge; 25-ultimate pressure limiting valve group; 26-oil pan tooling; 31-hydraulic hose; 32-hose connector; 4-oil tank module; 41-valve block, 42-bracket, 43-solenoid reversing valve, 44-pressure sensor, 45-pressure relay, 46-connector. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is described clearly and completely below in conjunction with the accompanying drawings. 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.

[0035] In the description of the present invention, it should be noted that the directions or positional relationships indicated by "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are directions or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the use of ordinal numbers (e.g., "first and second", "first to fourth", etc.) is to distinguish objects, and is not limited to this order, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] In one example, if Figure 1 As shown, an aircraft pipeline pressure cleaning test system includes an onboard functional module, a ground functional module, an electrical control module, a measurement and control module, a wireless communication module and a pipeline module. The onboard functional module and the ground functional module are collectively referred to as functional modules.

[0039] The onboard function module and the ground function module are both integrated with an electrical control module, which includes a mobile power supply and a circuit board. The circuit board is integrated with a microcontroller, and the actuators in the onboard function module and the ground function module are connected to the microcontroller. The actuators can be valves, actuators, hydraulic actuators, etc. The mobile power supply in the electrical control module is used to power the electronic components in the function module, such as the microcontroller, sensors (pressure sensors, flow sensors), the second communication unit, etc. Preferably, as Figure 2 As shown, the electrical control module preferably includes a mobile power supply 11, a circuit board 12, an electrical housing 13, an antenna 14, a reserved plug 15, etc., and a microcontroller MCU, such as a single-chip microcomputer, a PLC, or an FPGA, is integrated on the circuit board. At this time, the components of the electrical control module are packaged and then integrated into the corresponding functional modules.

[0040] The measurement and control module includes an industrial computer. Figure 3 As shown, the measurement and control module is packaged as a piano cabinet, and the piano cabinet 2 includes a stand 21 with walking wheels 22, and the stand 21 is provided with a display 23, a pressure gauge 24, an extreme pressure limiting valve group 25, and an oil pan tooling 26. An industrial computer (not shown in the figure) is provided in the stand, and the display is preferably a human-machine interface HMI. The industrial computer is used to set and control the oil circuit logic of the hydraulic subsystem, and in combination with the connection relationship between the hose or hard pipe in the pipeline module and the valve in the functional module, control the corresponding test pipeline to be connected.

[0041] The wireless communication module includes a first (wireless) communication unit and a second (wireless) communication unit that are connected in communication, which can be a 2G / 3G / 4G / 5G mobile communication module, a WIFI module, a Bluetooth module, a Lora communication module, or a NB-IOT module. In this example, a WIFI module is preferred. The first communication unit is connected to the industrial computer and is provided in the measurement and control module; the second communication unit is connected to the microcontroller and is provided in the electrical control module or the functional module;

[0042] The pipeline module has different lengths according to the requirements, including 1m, 3m, 5m, 7.5m and other specifications of hose or hard pipe, and is divided into 800psi, 1600psi, 4600psi according to different limit pressures; the thread specifications of the interface comply with AS4375E, and are divided into -4, -6, -8, -10, -12, -16, -20 according to different pipe diameters. Figure 4 As shown, each hose is mainly composed of a hydraulic hose 31 and a hose connector 32.

[0043] The oil source, each onboard functional module, and each ground functional module are pre-connected via a hose or a hard pipe to form a hydraulic circuit; the microcontroller receives instructions from the industrial computer (input by the user) via the second communication unit and the first communication unit to control the working status of the actuators in the onboard functional module and the ground functional module to achieve the selection of different pipelines, which is convenient for performing pressure resistance and cleaning tests.

[0044] Preferably, the onboard function module is provided with a flow collector and / or a pressure collector, and the ground function module is provided with a flow collector and / or a pressure collector. Preferably, both the onboard function module and the ground function module are provided with a flow collector and a pressure collector. The flow collector is used to collect real-time flow information of the onboard function module and the ground function module, and the pressure collector is used to collect real-time pressure information of the onboard function module and the ground function module. The flow collector and the pressure collector are connected to the microcontroller, and are sent to the industrial computer through the wireless communication module, and displayed in real time on the display.

[0045] The present invention replaces the hydraulic components between the pipelines in the aircraft body with the pressure-resistant cleaning function module, which is connected by hoses or hard pipes of different specifications to form a hydraulic circuit. WIFI wireless communication technology is used to accurately control the reversal, cut-off and passage of the hydraulic valve to realize the logical combination function of various working conditions. Information such as pressure and flow is collected by the sensor to the signal acquisition board, and the real-time viewing and analysis of the data is completed by the industrial computer. The hydraulic oil in the hydraulic circuit can be blown back to the oil source vehicle by connecting to the air source.

[0046] In one example, the onboard functional modules include a fuel tank module, a pressure oil filter module, and a lower rudder actuator. Each onboard functional module is integrated with an electrical control module and a second communication unit. The microcontroller in the electrical control module is connected to the first actuator of each onboard functional module, and the first actuator includes a valve. Optionally, the onboard functional module also includes a return oil filter module, a housing return oil filter module, a self-pressurization priority valve, a power distribution unit priority valve, a one-way flow limiting valve, and a fire-proof shut-off valve. The return oil filter module, the housing return oil filter module, the self-pressurization priority valve, the power distribution unit priority valve, the one-way flow limiting valve, and the fire-proof shut-off valve do not need to be integrated with the electrical control module and the second communication unit, and can be used in conjunction with other functional modules to achieve automatic pipeline cleaning.

[0047] Take the fuel tank module as an example. Figure 5 As shown, the oil tank module 4 includes a valve block 41, a bracket 42, an electromagnetic reversing valve 43, a pressure sensor 44, a pressure relay 45, a connector 46, a plug 47, etc. The number of oil tank modules is 1, with a total of 3 interfaces. When the pressure is not greater than 750PSI, the flow rate between any two interfaces of the tooling must be able to reach 56.78L / min.

[0048] In one example, the on-board functional module is replaced with on-board components, and the mounting hole spacing of the on-board components is consistent with that of the original components in the on-board functional module; as for the direction of the oil port, since most of the original components in the on-board functional module are castings and the direction of the oil port is irregular, the oil port of the on-board functional module is kept consistent with the direction of the original oil port as much as possible, and is connected to the on-board pipeline through a steel pipe or a hose in the middle.

[0049] In one example, the ground function module includes a power conversion device, a multifunctional spoiler actuator, a slat wingtip brake module, a flap wingtip brake module, a right outer aileron actuator, a leading edge slat power drive unit, a right outer elevator actuator, a backup brake cut-off valve, a ground spoiler control module, a ground spoiler actuator, a load sensing control valve, a load sensing sequential control valve, a main lift up lock, a front lift up lock, a ram air turbine actuator, a front wheel turning ground module, a main lift door actuator, a main lift retracting actuator, a front lift retracting actuator, a front lift down lock actuator, a front lift door actuator, a main lift down lock actuator, a backup brake control valve, a ground return oil cut-off valve, a hoisting ground tooling, and a quick-release ground tooling. Each ground function module is integrated with an electrical control module and a second communication unit. The microcontroller in the electrical control module is connected to the second actuator of each ground function module, and the second actuator includes a valve. Each function module is connected through a quick-release connector, a hose or a hard pipe.

[0050] Furthermore, the ground functional module forms a valve group module according to conditions such as pressure, flow, number and specifications of interfaces of different specifications, which is supported by a self-made bracket, and the oil port is connected to the onboard pipeline through a hose.

[0051] Take the flap wingtip brake module as an example. The flap wingtip brake module includes valve block, oil pan bracket, solenoid reversing valve, pressure sensor, pressure relay, flow switch, connector, plug, etc. There are 2 flap wingtip brakes and 2 slat wingtip brakes. There are 2 interfaces in total. When the pressure is not greater than 750PSI, the flow rate between the two interfaces of the tooling must be able to reach 18.93L / min. During the test, it is connected to the onboard pipeline through a hose.

[0052] In one example, the pressure loss of each pipeline section in the pipeline module is calculated based on the length and turning angle of the hose or hard pipe. Preferably, the pressure loss calculation formula of the pipeline assembly is:

[0053]

[0054] Where v is the average flow velocity in the tube, in m / s; d is the diameter of the tube, in m; λ is the resistance coefficient along the tube, which can be directly obtained from the Moody diagram; l is the length of the tube, in m; ρ is the density of the fluid, in kg / m 3 ζ represents the local resistance coefficient, which is obtained by looking up the table. By calculating all the pressure losses in the passage, that is, calculating the pressure losses caused by the length of the hose or hard pipe, the hard pipe, the 90° and 45° turns, the pipe diameter change, etc. in the passage, the target pipeline can reach a flow rate exceeding the specified setting under the specified pressure value of each pipeline, thus achieving the purpose of pipeline flushing.

[0055] Combine the above examples, open the human-machine interface in the industrial computer, select and click a certain working condition, connect the industrial computer and the microcontroller through wireless WIFI signal transmission, and connect the microcontroller to each valve group module. The on and off of the electromagnetic on-off valve in each valve group module can be controlled with one click, and the connection and reversing in the valve group module can be completed to form a passage, and the pressure and flow at each point in the system can be monitored in real time.

[0056] Taking the left main lifting upper lock pipeline cleaning condition as an example, first use hoses of different specifications to connect the valve groups and aircraft pipeline oil ports. The required valve groups are shown in Table 1:

[0057] Table 1 Left main lift upper lock pipeline cleaning condition valve group table

[0058]

[0059] For the left main upper lock pipeline cleaning condition, the passage flow rate must reach more than 5gpm under the system pressure of 1500psi. After clicking on the left main upper lock pipeline cleaning condition on the human-machine interface of the industrial computer, the microcontroller receives the user's instruction to start the left main upper lock pipeline cleaning condition input on the industrial computer through the first communication unit and the second communication unit, controls the corresponding function module to execute the device (valve group, actuator, etc.), automatically opens the electromagnetic on-off valve in Table 2, and forms an oil circulation passage as shown in Figure 6 As shown, under the specified pressure value of each pipeline, the specified set flow rate is achieved to achieve the purpose of pipeline flushing.

[0060] Table 2 Connection relationship table of left main lifting upper lock pipeline cleaning working condition

[0061]

[0062] The system of the present invention can monitor the pressure value changes near the pressure monitoring point in real time through the pressure sensors set in each valve block module. Taking the left main lift upper lock pipeline cleaning condition as an example, due to the large pressure loss in the passage, the pressure monitoring point in the human-machine interface can be moved back to the front end of the "front wheel turning" valve group module. Under the pressure of 1500psi, the passage flow rate reaches more than 5gpm, completing the cleaning condition.

[0063] When cleaning a certain pipeline, each pressure test point in the loop has a pressure value, and the pressure tends to decrease. When the pressure test point outside the loop detects hydraulic pressure, the microcontroller feeds back the pressure information to the industrial computer, which determines it as abnormal pressure and controls the human-machine interface to automatically alarm, indicating that there is a problem with the pipeline cleaning condition and engineers need to troubleshoot. There are many types of faults, generally considering solenoid valve, valve block leakage, wrong connection of the pipeline hose under the machine, wrong connection of the pipeline on the machine, etc. In practical applications, this test method can be used to find the problem of wrong connection of the pipeline on the machine, and the test efficiency is high.

[0064] After the system pipeline is pressure-resistant and cleaned, the ground valve group module and the onboard pipeline need to be separated to test the pipeline of the next flight. The present invention introduces an air circuit, and after the working condition is completed, most of the hydraulic oil in the system pipeline is blown back to the oil truck by compressed air so that the hydraulic medium can be reused next time.

[0065] Under pressure-resistant conditions, the flow switch can detect tiny flows and sound an alarm, and the pressure switch can detect bypass oil pressure and sound an alarm, indicating that there is a serious leak in the current piping system and engineers are required to troubleshoot the problem.

[0066] The invention has the technical advantages of simple structure, convenient operation, saving operation time, saving hydraulic medium, and verifying the correctness of the pipeline interface on the machine.

[0067] Under the same specified system pressure, there will be different system flow requirements. Under a system pressure of 1500psi, the passage flow rate reaches more than 13gpm.

[0068] The above specific implementation methods are detailed descriptions of the present invention. It cannot be determined that the specific implementation methods of the present invention are limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions and substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. An aircraft pipeline pressure cleaning test system, characterized in that: include: Onboard functional module, integrated with electrical control module; A ground function module, integrated with an electrical control module; The electrical control module includes a power supply and a circuit board, a microcontroller is integrated on the circuit board, and the actuators in the onboard function module and the ground function module are connected to the microcontroller; Measurement and control module, including industrial computer; The wireless communication module includes a first communication unit and a second communication unit in communication connection; the first communication unit is connected to the industrial computer and is arranged in the measurement and control module; the second communication unit is connected to the microcontroller and is arranged in the electrical control module or the onboard function module or the ground function module; The pipeline module includes several hoses and hard pipes. The oil source, various onboard functional modules, and various ground functional modules are connected through hoses or hard pipes. The microcontroller receives the instructions of the industrial computer through the communication module to control the working status of the actuators in the onboard functional modules and ground functional modules to realize the selection of different pipelines.

2. The aircraft pipeline pressure cleaning test system according to claim 1, characterized in that: The onboard functional modules include a fuel tank module, a pressure oil filter module, and a lower rudder actuator. Each onboard functional module is integrated with an electrical control module and a second communication unit. The microcontroller in the electrical control module is connected to the first actuator of each onboard functional module, and the first actuator includes a valve.

3. The aircraft pipeline pressure cleaning test system according to claim 1, characterized in that: The on-board components are used to replace the on-board functional modules, the installation hole spacing of the on-board components is consistent with that of the original components in the on-board functional module, and the oil port direction of the on-board components is consistent with that of the original components in the on-board functional module.

4. The aircraft pipeline pressure cleaning test system according to claim 1, characterized in that: The ground function module includes a power conversion device, a multifunctional spoiler actuator, a slat wingtip brake module, a flap wingtip brake module, a right outer aileron actuator, a leading edge slat power drive unit, a right outer elevator actuator, a backup brake cut-off valve, a ground spoiler control module, a ground spoiler actuator, a load sensing control valve, a load sensing sequential control valve, a main lift upper lock, a front lift upper lock, a ram air turbine actuator, a front wheel turning ground module, a main lift door actuator cylinder, a main lift retracting actuator cylinder, a front lift retracting actuator cylinder, a front lift lower lock actuator cylinder, a front lift door actuator cylinder, a main lift lower lock actuator cylinder, a backup brake control valve, a ground return oil cut-off valve, a hoisting ground tooling, and a quick-discharging ground tooling. Each ground function module is integrated with an electrical control module and a second communication unit. The microcontroller in the electrical control module is connected to a second actuator of each ground function module, and the second actuator includes a valve.

5. The aircraft pipeline pressure cleaning test system according to claim 1, characterized in that: The onboard functional module is provided with a flow collector and / or a pressure collector, and the ground functional module is provided with a flow collector and / or a pressure collector. The flow collector is used to collect real-time flow information of the onboard functional module and / or the ground functional module, and the pressure collector is used to collect real-time pressure information of the onboard functional module and / or the ground functional module. The flow collector and the pressure collector are connected to the microcontroller.

6. The aircraft pipeline pressure cleaning test system according to claim 5, characterized in that: The measurement and control module also has a display, and the display is connected to the industrial computer.

7. The aircraft pipeline pressure cleaning test system according to claim 1, characterized in that: The pressure loss of each pipeline section in the pipeline module is calculated according to the length and turning angle of the hose or the hard pipe.

8. The aircraft pipeline pressure cleaning test system according to claim 7, characterized in that: The calculation formula for the pressure loss of the pipeline assembly is: Among them, v represents the average flow velocity in the tube; d represents the diameter of the tube; λ represents the resistance coefficient along the way; l represents the length of the tube; ρ represents the density of the fluid; represents the local resistance coefficient.

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