Aircraft engine fire bottle dispensing line test system and method

Abstract

The application discloses an airplane engine fire extinguishing bottle distribution pipeline test system, which comprises a test bottle, a fire extinguishing system arranged on an airplane, and a test tool, wherein the test tool connects the test bottle with the fire extinguishing system and blocks the fire extinguishing injection port of the fire extinguishing system, and displays whether the fire extinguishing system is normal on the test tool. The application can judge whether the fire extinguishing system is blocked or / and leakage occurs according to collected pressure data.

Description

Technical Field

[0001] This invention relates to a testing technology for an aviation inactivation system, and more specifically, to a testing system and method for the distribution pipeline of an aircraft engine fire extinguishing bottle. Background Technology

[0002] To ensure safety, each aircraft engine has a fire suppression system. Two fire extinguishing cylinders are located at the rear of the engine and connected to distribution lines. When released, the extinguishing agent in the cylinders travels through these lines to all areas of the engine. Routine aircraft maintenance requires regular testing of these distribution lines to ensure they are free of blockages and leaks, and that the extinguishing agent can reach all areas smoothly in the event of a fire, thus ensuring aircraft safety. Therefore, testing equipment for the aircraft engine fire extinguishing cylinder distribution lines is essential. This testing equipment addresses two aspects: blockage testing and leakage testing. The blockage test ensures the lines are free of blockages, preventing the extinguishing agent from failing to reach designated areas; the leakage test ensures the lines are undamaged, preventing extinguishing agent leakage and inadequate fire suppression. Summary of the Invention

[0003] One of the objectives of this invention is to address the aforementioned shortcomings by providing a testing system and method for aircraft engine fire extinguishing bottle distribution pipelines, aiming to achieve technical objectives such as blockage testing, leakage testing, and pipeline damage testing in aircraft engine deactivation systems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] This invention provides a test system for the distribution pipeline of fire extinguishing bottles for aircraft engines, including test bottles and a fire extinguishing system installed on the aircraft, as well as a test tool. The test tool connects the test bottle to the fire extinguishing system and blocks the fire extinguishing nozzle of the fire extinguishing system. The test tool displays whether the fire extinguishing system is functioning properly.

[0006] Preferably, the test bottle is a nitrogen cylinder. Whether the fire extinguishing system is functioning properly includes whether the fire extinguishing system distribution lines are blocked or / and leaking. The testing tool includes a connector and M plugs, where M is the number of fire extinguishing nozzles in the fire extinguishing system; the test bottle connector of the connector connects to the test bottle, and the fire extinguishing coupling connector of the connector connects to the fire extinguishing inlet of the fire extinguishing system, thus connecting the test bottle to the fire extinguishing system; the M plugs seal the M fire extinguishing nozzles on the fire extinguishing system.

[0007] The connector includes a connecting hose, a test bottle connector at one end of the connecting hose for connecting a test bottle, and a fire extinguishing coupling connector at the other end of the connecting hose for connecting the fire extinguishing inlet of the distribution pipeline.

[0008] A display component is fitted onto the connecting flexible tubing. The display component includes a housing and a PCB mounting bracket inside the housing for fixing a PCB circuit board. The PCB circuit board is fixedly mounted on the PCB mounting bracket. A touch screen and a scanning head are provided on the surface of the housing. A wireless transceiver module and a controller are provided on the PCB circuit board. The wireless data terminal of the controller is connected to the wireless data terminal of the wireless transceiver module. The touch display data terminal of the controller is connected to the touch display data terminal of the touch screen. The scanning data terminal of the controller is connected to the scanning data terminal of the scanning head.

[0009] The m-th plug includes a m-th plug body, where m is a positive integer less than or equal to M. An m-th QR code is printed on the m-th plug body; scanning the m-th QR code yields the ID number of the m-th plug. An m-th PCB board mounting bracket is provided on the m-th plug body for fixing and mounting the m-th PCB board. The m-th PCB board is fixedly mounted on the m-th PCB board mounting bracket. An m-th controller and an m-th wireless transceiver module are provided on the m-th PCB board. The m-th controller stores the ID number of the m-th plug. An m-th pressure sensor is also provided on the m-th plug body. The wireless data terminal of the m-th controller is connected to the wireless data terminal of the m-th wireless transceiver module, and the pressure data terminal of the m-th controller is connected to the pressure data terminal of the m-th pressure sensor.

[0010] The first plug includes a first plug body, on which a first QR code is printed. Scanning the first QR code yields the ID number of the first plug. A first PCB board mounting bracket for fixing and installing a first PCB board is provided on the first plug body. The first PCB board is fixedly installed on the first PCB board mounting bracket. A first controller and a first wireless transceiver data module are provided on the first PCB board. The ID number of the first plug is stored in the first controller. A first pressure sensor is also provided on the first plug body. The wireless data terminal of the first controller is connected to the wireless data terminal of the first wireless transceiver data module. The pressure data terminal of the first controller is connected to the pressure data terminal of the first pressure sensor. The second plug includes a second plug body, on which a second QR code is printed. Scanning the second QR code yields the ID number of the second plug. A second PCB board mounting bracket is provided on the second plug body for fixing and mounting a second PCB board. The second PCB board is fixedly mounted on the second PCB board mounting bracket. A second controller and a second wireless transceiver module are provided on the second PCB board. The second controller stores the ID number of the second plug. A second pressure sensor is also provided on the second plug body. The wireless data terminal of the second controller is connected to the wireless data terminal of the second wireless transceiver module, and the pressure data terminal of the second controller is connected to the pressure data terminal of the second pressure sensor. The three-end plug includes a third end plug body, on which a third QR code is printed. Scanning the third QR code yields the ID number of the third end plug. A third PCB board mounting bracket is provided on the third end plug body for fixing and mounting a third PCB board. The third PCB board is fixedly mounted on the third PCB board mounting bracket. A third controller and a third wireless transceiver module are mounted on the third PCB board. The third controller stores the ID number of the third end plug. A third pressure sensor is also provided on the third end plug body. The wireless data terminal of the third controller is connected to the wireless data terminal of the third wireless transceiver module. The pressure data terminal of the third controller is connected to the pressure data terminal of the third pressure sensor;… The Mth plug includes an Mth plug body, on which an Mth QR code is printed. Scanning the Mth QR code yields the ID number of the Mth plug. An Mth PCB board mounting bracket is provided on the Mth plug body for fixing and mounting the Mth PCB board. The Mth PCB board is fixedly mounted on the Mth PCB board mounting bracket. An Mth controller and an Mth wireless transceiver data module are provided on the Mth PCB board. The ID number of the Mth plug is stored in the Mth controller. An Mth pressure sensor is also provided on the Mth plug body. The wireless data terminal of the Mth controller is connected to the wireless data terminal of the Mth wireless transceiver data module. The pressure data terminal of the Mth controller is connected to the pressure data terminal of the Mth pressure sensor.

[0011] A further technical solution is as follows: a main switch, a pressure reducing valve with a pressure gauge, an overpressure protector, and an isolation valve are sequentially installed on the pipeline between the test bottle connector and the test bottle; a pressure relief valve is also installed after the isolation valve; the aforementioned main switch is used to open and close the gas source pipeline; the pressure reducing valve is used to reduce the gas source pressure to a suitable pressure; the overpressure protector is used to prevent overpressure in the gas path and protect the gas path; the isolation valve is used to isolate the downstream gas path from the upstream gas source during testing; and the pressure relief valve is used to release the gas in the pipeline.

[0012] A further technical solution is: the wireless transceiver module or / and the m-th wireless transceiver module includes one or any combination of a wireless transceiver WiFi module, a wireless transceiver Bluetooth module, a wireless transceiver 2G module, a wireless transceiver 3G module, a wireless transceiver 4G module, and a wireless transceiver 5G module.

[0013] Another aspect of the present invention provides a method for testing the distribution pipeline of an aircraft engine fire extinguishing bottle, the method comprising the following steps:

[0014] S1, after sealing the fire extinguishing nozzle with a plug, connect the test bottle to the fire extinguishing system via a connector.

[0015] S2, using the connector to introduce a certain amount of test gas into the distribution pipeline.

[0016] S3 displays the status of the fire suppression system on the touch screen.

[0017] Preferably, the method further includes the following steps:

[0018] S11. Take out a plug, scan the QR code on the plug, and get its ID number.

[0019] S12, after the display component obtains the ID number of the plug, it uses the plug to seal the fire extinguishing nozzle; after sealing, the position of the fire extinguishing nozzle is recorded.

[0020] S13, take out the next plug, scan the QR code on the plug to obtain its ID number; after the display component obtains the ID number of the plug, use the plug to seal the next fire extinguishing nozzle; after sealing, record the position of the fire extinguishing nozzle; until all fire extinguishing nozzles are completed.

[0021] S14, connect the test bottle connector on the connecting hose to the test bottle, and connect the fire extinguishing coupling connector on the connecting hose to the fire extinguishing inlet of the fire extinguishing system.

[0022] As a preferred further technical solution, step S2 includes the following steps:

[0023] S20, close the pressure relief valve.

[0024] S21, open the isolation valve to connect its downstream gas path and upstream gas path.

[0025] S22, turn on the switch on the nitrogen cylinder to allow the nitrogen in the cylinder to flow out.

[0026] S23, turn on the main switch to allow nitrogen gas to flow into the fire extinguishing system through the connecting hose.

[0027] S24. After a certain period of time, the isolation valve is closed to isolate the downstream gas path from the upstream gas source.

[0028] Or / and after step S3, step S4 is also included to end the test; the method for ending the test includes the following steps:

[0029] S41, close the switch on the nitrogen cylinder to prevent nitrogen from flowing out of the cylinder.

[0030] S42, turn off the main switch to allow nitrogen gas to flow into the fire extinguishing system through the connecting hose.

[0031] S43, open the pressure relief valve to release the gas in its distribution pipeline.

[0032] S44, open the isolation valve to connect the downstream gas path and the upstream gas path.

[0033] S45, disconnect the test bottle connector on the flexible hose from the test bottle, and disconnect the fire extinguishing coupling connector on the flexible hose from the fire extinguishing inlet of the fire extinguishing system.

[0034] Or / and step S3 includes the following steps:

[0035] S31, the controller acquires pressure data collected by M pressure sensors; i = 1, 2, 3, ..., M.

[0036] S32, determines whether there is blockage or leakage in the distribution pipeline based on the pressure data collected by the pressure sensor:

[0037] S321, introduce 4 BAR pressurized nitrogen into the distribution pipe.

[0038] S322, the method for determining whether the pipe corresponding to the i-th plug is blocked is as follows.

[0039] If F i ≤F i ′+Q, where F i F represents the pressure value detected by the pressure sensor in the i-th plug. i ′ represents the pressure value at the location of the i-th plug, and Q represents the pressure error adjustment value; then the pipe corresponding to the i-th plug is in a blocked state.

[0040] If Fi >F i ′+Q, where F i F represents the pressure value detected by the pressure sensor in the i-th plug. i ′ represents the pressure value at the location of the i-th plug, and Q represents the pressure error adjustment value; then the pipe corresponding to the i-th plug is in a clear state; the blockage detection is complete.

[0041] S323, open the pressure relief valve to release all the nitrogen in the distribution pipeline; then introduce 2 BAR pressure nitrogen into the distribution pipeline.

[0042] S324, the method for determining whether the distribution pipe is leaking after 8 to 12 minutes is as follows:

[0043] If the pressure drops by more than 0.2 BAR within 10 minutes, it indicates a leak in the pipeline. In this case, a flow test agent needs to be applied to the pipeline to determine the leak point.

[0044] As a preferred further technical solution, the method for the plug to transmit the collected pressure data to the display component in step S31 includes the following steps:

[0045] S311, whether each plug has received the test completion trigger signal.

[0046] If the plug receives a test completion trigger signal, proceed to the next step.

[0047] If the plug does not receive a test completion trigger signal, the pressure sensor continues to collect pressure data.

[0048] S312, the controller inside the plug generates an XML file from all pressure values ​​collected by the pressure sensor at various times, and calculates the XML code of the XML file. The method for calculating the XML code of the XML file is as follows:

[0049] File character code=File code operation method(xml file data)

[0050] Among them, File character code represents XML code.

[0051] The `File code operation method()` method represents the method for calculating the XML code; here, the XML code is calculated using the MD5 hash digest method, and the result is a 16-bit hexadecimal character code.

[0052] XML file data refers to an XML file.

[0053] The XML code is used as the filename of the XML file. After using the XML code as the filename of the XML file, we get an XML file with the XML code filename. The XML file with the XML code filename is compressed to get an XML file package. The ID number of the plug is used as the filename of the XML file package.

[0054] S313, Determine the number of files in an XML file package:

[0055] If the XML file package contains only one file, the XML file package with the header ID number will be sent to the display component.

[0056] If the number of files in the XML file package is greater than or equal to 2, delete the other files in the XML file package with the header ID number, leaving only the XML file with the XML code file name; send the XML file package with the header ID number to the display component;

[0057] S314, After the controller in the display component receives the pressure data sent by the plug, the received pressure data is a pressure receiving packet. The pressure receiving packet is decompressed to obtain a decompressed file. The decompression code of the decompressed file is calculated. The method for calculating the decompression code of the decompressed file is as follows:

[0058] Decompress character code=Decompress code operation method(Decompress file data)

[0059] The decompress character code indicates the decompression code.

[0060] The `Decompress code operation method()` method represents the method used to calculate the decompression code. Here, the MD5 hash digest method is used, and the result is a 16-bit hexadecimal character code.

[0061] "Decompress file data" means to extract files.

[0062] Check if the decompression code of the decompressed file matches the file name of the decompressed file.

[0063] If the decompression code of the decompressed file does not match the file name of the decompressed file, the display component will re-request the pressure data from the plug corresponding to the file name of the pressure receiving packet.

[0064] If the decompression code of the decompressed file matches the filename of the decompressed file, then the filename of the received packet is used as the ID number of the header, and the pressure values ​​at each time point are obtained from the decompressed file.

[0065] In summary, by adopting the above technical solution, the present invention can determine whether the fire extinguishing system is blocked or / and leaking based on the collected pressure data, and can also determine whether the pipeline is damaged through the pressure data.

[0066] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0067] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0068] Figure 1 This is a schematic block diagram illustrating the connection of the present invention. Detailed Implementation

[0069] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0070] One embodiment of the present invention is a test system for aircraft engine fire extinguishing bottle distribution lines, such as... Figure 1 As shown, the system includes a test bottle and a fire suppression system installed on the aircraft, as well as a test tool. The test tool connects the test bottle to the fire suppression system and seals the fire suppression system's nozzles. The test tool displays whether the fire suppression system is functioning properly.

[0071] In a preferred embodiment of the present invention, the test bottle is a nitrogen bottle.

[0072] Whether the fire suppression system is functioning properly includes whether the fire suppression system distribution lines are blocked or leaking.

[0073] In a preferred embodiment of the present invention, the testing tool includes a connector and M plugs, where M is the number of fire extinguishing nozzles of the fire extinguishing system.

[0074] The connector's test bottle connector is connected to the test bottle, and the connector's fire extinguishing coupling connector is connected to the fire extinguishing inlet of the fire extinguishing system, thus enabling the connector to connect the test bottle to the fire extinguishing system.

[0075] M plugs will be used to seal M fire extinguishing nozzles on the fire extinguishing system.

[0076] In a preferred embodiment of the present invention, the connector includes a connecting flexible tube, a test bottle connector is provided at one end of the connecting flexible tube for connecting a test bottle, and a fire extinguishing coupling connector is provided at the other end of the connecting flexible tube for connecting the fire extinguishing inlet of the distribution pipeline.

[0077] A display component is fitted onto the connecting flexible tubing. The display component includes a housing and a PCB board mounting bracket inside the housing for fixing and mounting a PCB board. The PCB board is fixedly mounted on the PCB board mounting bracket. A touch screen and a scanning head are provided on the surface of the housing. A wireless transceiver module and a controller are provided on the PCB board. The wireless data terminal of the controller is connected to the wireless data terminal of the wireless transceiver module. The touch display data terminal of the controller is connected to the touch display data terminal of the touch screen. The scanning data terminal of the controller is connected to the scanning data terminal of the scanning head.

[0078] The m-th plug includes a m-th plug body, where m is a positive integer less than or equal to M. An m-th QR code is printed on the m-th plug body; scanning the m-th QR code yields the ID number of the m-th plug. An m-th PCB board mounting bracket is provided on the m-th plug body for fixing and mounting the m-th PCB board. The m-th PCB board is fixedly mounted on the m-th PCB board mounting bracket. An m-th controller and an m-th wireless transceiver module are provided on the m-th PCB board. The m-th controller stores the ID number of the m-th plug. An m-th pressure sensor is also provided on the m-th plug body. The wireless data terminal of the m-th controller is connected to the wireless data terminal of the m-th wireless transceiver module, and the pressure data terminal of the m-th controller is connected to the pressure data terminal of the m-th pressure sensor.

[0079] Following the above approach, specifically, the first plug includes a first plug body, on which a first QR code is printed. Scanning the first QR code yields the ID number of the first plug. A first PCB board mounting bracket is provided on the first plug body for fixing and mounting a first PCB board. The first PCB board is fixedly mounted on the first PCB board mounting bracket. A first controller and a first wireless transceiver module are provided on the first PCB board. The first controller stores the ID number of the first plug. A first pressure sensor is also provided on the first plug body. The wireless data terminal of the first controller is connected to the wireless data terminal of the first wireless transceiver module. The pressure data terminal of the first controller is connected to the first pressure sensor. The pressure data terminal is connected; the second plug includes a second plug body, on which a second QR code is printed. Scanning the second QR code yields the ID number of the second plug. A second PCB board mounting bracket is provided on the second plug body for fixing and installing the second PCB board. The second PCB board is fixedly mounted on the second PCB board mounting bracket. A second controller and a second wireless transceiver module are provided on the second PCB board. The second controller stores the ID number of the second plug. A second pressure sensor is also provided on the second plug body. The wireless data terminal of the second controller is connected to the wireless data terminal of the second wireless transceiver module. The pressure data terminal of the second controller is connected to the pressure data terminal of the second pressure sensor. The third plug includes a third plug body, on which a third QR code is printed. Scanning the third QR code yields the ID number of the third plug. A third PCB board mounting bracket is provided on the third plug body for fixing and mounting the third PCB board. The third PCB board is fixedly mounted on the third PCB board mounting bracket. A third controller and a third wireless transceiver module are provided on the third PCB board. The third controller stores the ID number of the third plug. A third pressure sensor is also provided on the third plug body. The wireless data terminal of the third controller is connected to the wireless data terminal of the third wireless transceiver module. The pressure data terminal of the third controller is connected to the pressure data terminal of the third pressure sensor. ...; The Mth plug includes the Mth plug body, on which the Mth QR code is printed. Scanning the Mth QR code yields the ID number of the Mth plug. The Mth plug body is provided with an Mth PCB board mounting base for fixing and installing the Mth PCB board. The Mth PCB board is fixedly installed on the Mth PCB board mounting base. The Mth PCB board is provided with an Mth controller and an Mth wireless transceiver data module. The Mth controller stores the ID number of the Mth plug. The Mth plug body is also provided with an Mth pressure sensor. The wireless data terminal of the Mth controller is connected to the wireless data terminal of the Mth wireless transceiver data module. The pressure data terminal of the Mth controller is connected to the pressure data terminal of the Mth pressure sensor.

[0080] In a preferred embodiment of the present invention, a main switch, a pressure reducing valve with a pressure gauge, an overpressure protector, and an isolation valve are sequentially provided on the pipeline between the test bottle connector and the test bottle. A pressure relief valve is also provided after the isolation valve.

[0081] The main switch is used to turn the gas supply line on and off.

[0082] Pressure reducing valves are used to reduce the gas source pressure to a suitable pressure.

[0083] Overpressure protectors are used to prevent overpressure in the gas circuit and protect the gas circuit.

[0084] Isolation valves are used to isolate downstream gas lines from upstream gas sources during testing.

[0085] Pressure relief valves are used to release gas from pipelines.

[0086] In a preferred embodiment of the present invention, the wireless transceiver module or / and the m-th wireless transceiver module includes one or any combination of a wireless transceiver WiFi module, a wireless transceiver Bluetooth module, a wireless transceiver 2G module, a wireless transceiver 3G module, a wireless transceiver 4G module, and a wireless transceiver 5G module.

[0087] Another embodiment of the present invention is a test method for the distribution pipeline of an aircraft engine fire extinguishing bottle, which is performed according to the following steps:

[0088] S1, after sealing the fire extinguishing nozzle with a plug, connect the test bottle to the fire extinguishing system via a connector.

[0089] S2, using the connector to introduce a certain amount of test gas into the distribution pipeline.

[0090] S3 displays the status of the fire suppression system on the touch screen.

[0091] In a preferred embodiment of the present invention, step S1 includes the following steps:

[0092] S11. Take out a plug, scan the QR code on the plug, and get its ID number.

[0093] S12, after the display component obtains the ID number of the plug, it uses the plug to seal the fire extinguishing nozzle; after sealing, the position of the fire extinguishing nozzle is recorded.

[0094] S13, take out the next plug, scan the QR code on the plug to obtain its ID number; after the display component obtains the ID number of the plug, use the plug to seal the next fire extinguishing nozzle; after sealing, record the position of the fire extinguishing nozzle; until all fire extinguishing nozzles are completed.

[0095] S14, connect the test bottle connector on the connecting hose to the test bottle, and connect the fire extinguishing coupling connector on the connecting hose to the fire extinguishing inlet of the fire extinguishing system.

[0096] In a preferred embodiment of the present invention, step S2 includes the following steps:

[0097] S20, close the pressure relief valve.

[0098] S21, open the isolation valve to connect its downstream gas path and upstream gas path.

[0099] S22, turn on the switch on the nitrogen cylinder to allow the nitrogen in the cylinder to flow out.

[0100] S23, turn on the main switch to allow nitrogen gas to flow into the fire extinguishing system through the connecting hose.

[0101] S24. After a certain period of time, the isolation valve is closed to isolate the downstream gas path from the upstream gas source.

[0102] Or / and after step S3, step S4 is also included to end the test; the method for ending the test includes the following steps:

[0103] S41, close the switch on the nitrogen cylinder to prevent nitrogen from flowing out of the cylinder.

[0104] S42, turn off the main switch to allow nitrogen gas to flow into the fire extinguishing system through the connecting hose.

[0105] S43, open the pressure relief valve to release the gas in its distribution pipeline.

[0106] S44, open the isolation valve to connect the downstream gas path and the upstream gas path.

[0107] S45, disconnect the test bottle connector on the flexible hose from the test bottle, and disconnect the fire extinguishing coupling connector on the flexible hose from the fire extinguishing inlet of the fire extinguishing system.

[0108] Or / and step S3 includes the following steps:

[0109] S31, the controller acquires pressure data collected by M pressure sensors; i = 1, 2, 3, ..., M.

[0110] S32 determines whether there is blockage or leakage in the distribution pipeline based on the pressure data collected by the pressure sensor.

[0111] S321, introduce 4 BAR pressurized nitrogen into the distribution pipe.

[0112] S322, the method for determining whether the pipe corresponding to the i-th plug is blocked is as follows:

[0113] If F i ≤F i ′+Q, where F i F represents the pressure value detected by the pressure sensor in the i-th plug. i ′ represents the pressure value at the location of the i-th plug, and Q represents the pressure error adjustment value; then the pipe corresponding to the i-th plug is in a blocked state.

[0114] If F i >F i ′+Q, where F i F represents the pressure value detected by the pressure sensor in the i-th plug. i ′ represents the pressure value at the location of the i-th plug, and Q represents the pressure error adjustment value; then the pipe corresponding to the i-th plug is in a clear state; the blockage detection is complete.

[0115] S323, open the pressure relief valve to release all the nitrogen in the distribution pipeline; then introduce 2 BAR pressure nitrogen into the distribution pipeline.

[0116] S324, after a period of time, ranging from 8 to 12 minutes, the method for determining whether the distribution pipe is leaking is as follows:

[0117] If the pressure drops by more than 0.2 BAR within 10 minutes, it indicates a leak in the pipeline. In this case, a flow test agent needs to be applied to the pipeline to determine the leak point.

[0118] In a preferred embodiment of the present invention, the method for transmitting the collected pressure data from the plug to the display component in step S31 includes the following steps:

[0119] S311, have each plug received the test completion trigger signal?

[0120] If the plug receives a test completion trigger signal, proceed to the next step.

[0121] If the plug does not receive a test completion trigger signal, the pressure sensor continues to collect pressure data.

[0122] S312, the controller inside the plug generates an XML file from all pressure values ​​collected by the pressure sensor at various times. Calculating the XML code of the XML file helps to verify issues such as missing data during transmission. The method for calculating the XML code of the XML file is as follows:

[0123] File character code=File code operation method(xml file data)

[0124] Among them, File character code represents XML code.

[0125] The `File code operation method()` method represents the method for calculating the XML code; here, the XML code is calculated using the MD5 hash digest method, and the result is a 16-bit hexadecimal character code.

[0126] XML file data refers to an XML file.

[0127] Using the XML code as the filename of the XML file, we obtain an XML file with the XML code filename. Compressing the XML file with the XML code filename helps reduce the amount of data transferred. After compressing the XML file with the XML code filename, we obtain an XML file package. Using the plug's ID number as the filename of the XML file package facilitates the rapid extraction of the plug's ID number, which is then used as the pressure sensor's identification number.

[0128] S313, Determine the number of files in an XML file package:

[0129] If the XML file package contains only one file, the XML file package with the header ID number will be sent to the display component.

[0130] If the number of files in the XML file package is greater than or equal to 2, delete the other files in the XML file package with the header ID number, leaving only the XML file with the XML code file name; send the XML file package with the header ID number to the display component.

[0131] S314, After the controller in the display component receives the pressure data sent by the plug, the received pressure data is a pressure receiving packet. The pressure receiving packet is decompressed to obtain a decompressed file. The decompression code of the decompressed file is calculated. The method for calculating the decompression code of the decompressed file is as follows:

[0132] Decompress character code=Decompress code operation method(Decompress file data)

[0133] The decompress character code indicates the decompression code.

[0134] The `Decompress code operation method()` method represents the method used to calculate the decompression code. Here, the MD5 hash digest method is used, and the result is a 16-bit hexadecimal character code.

[0135] "Decompress file data" means to extract files.

[0136] Check if the decompression code of the extracted file matches the filename of the extracted file:

[0137] If the decompression code of the decompressed file does not match the file name of the decompressed file, the display component will re-request the pressure data from the plug corresponding to the file name of the pressure receiving packet.

[0138] If the decompression code of the decompressed file matches the filename of the decompressed file, then the filename of the received packet is used as the ID number of the header, and the pressure values ​​at each time point are obtained from the decompressed file.

[0139] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A test system for aircraft engine fire extinguishing bottle distribution pipelines, comprising test bottles and a fire extinguishing system installed on the aircraft, characterized in that, It also includes a testing tool, which is connected to the fire extinguishing system via the testing tool. The testing tool is used to block the fire extinguishing nozzles of the fire extinguishing system and to display whether the fire extinguishing system is functioning properly. The testing tool includes a connector and M plugs, where M is the number of fire extinguishing nozzles in the fire extinguishing system; the test bottle connector of the connector is connected to the test bottle, and the fire extinguishing coupling connector of the connector is connected to the fire extinguishing inlet of the fire extinguishing system; the connector is used to connect the test bottle to the fire extinguishing system. The M plugs are used to seal the M fire extinguishing nozzles on the fire extinguishing system; The connector includes a connecting flexible tube, the test bottle connector is located at one end of the connecting flexible tube, and the fire extinguishing coupling connector is located at the other end of the connecting flexible tube. The test bottle is a nitrogen cylinder; whether the fire extinguishing system is functioning properly is determined by whether the fire extinguishing system distribution pipeline is blocked or / and leaking. The connecting flexible tube is fitted with a display component, which includes a housing, a PCB board mounting bracket inside the housing for fixing the PCB board, the PCB board being fixedly mounted on the PCB board mounting bracket, a touch screen and a scanning head on the surface of the housing, a wireless transceiver module and a controller on the PCB board, the wireless data terminal of the controller being connected to the wireless data terminal of the wireless transceiver module, the touch display data terminal of the controller being connected to the touch display data terminal of the touch screen, and the scanning data terminal of the controller being connected to the scanning data terminal of the scanning head. No. The plug includes the first The plug body, the A positive integer less than or equal to M, in the th... The plug body is printed with the number QR code, scan the number The QR code obtained the first The ID number of the plug is in the number... The plug body is provided with a tool for fixing and installing the first PCB circuit board PCB circuit board mounting bracket, first PCB circuit board is fixedly installed in the first On the PCB circuit board mounting bracket, at the first The PCB circuit board has the first Controller and Wireless transceiver module, number The controller stores the first The ID number of the plug is in the number... The plug body is also equipped with a first Pressure sensor, number The controller's wireless data terminal and the first The wireless data terminal of the wireless transceiver module is connected, the first The controller's pressure data terminal and the first The pressure data terminal of the pressure sensor is connected.

2. The aircraft engine fire extinguishing bottle distribution pipeline testing system according to claim 1, characterized in that: The wireless transceiver module includes one or any combination of a wireless transceiver WiFi module, a wireless transceiver Bluetooth module, a wireless transceiver 2G module, a wireless transceiver 3G module, a wireless transceiver 4G module, and a wireless transceiver 5G module.

3. The aircraft engine fire extinguishing bottle distribution pipeline testing system according to claim 1, characterized in that: The pipeline between the test bottle connector and the test bottle is also equipped with a main switch, a pressure reducing valve with a pressure gauge, an overpressure protector, and an isolation valve in sequence; a pressure relief valve is also installed after the isolation valve. The main switch is used to open and close the gas supply circuit; Pressure reducing valves are used to reduce the gas source pressure to a suitable pressure; Overpressure protectors are used to prevent overpressure in the gas circuit and protect the gas circuit. The isolation valve is used to isolate the downstream gas path from the upstream gas source during testing; Pressure relief valves are used to release gas from pipelines.

4. A test method for the distribution pipeline of an aircraft engine fire extinguishing bottle, characterized in that... The method includes the following steps: S1, after sealing the fire extinguishing nozzle with a plug, connect the test bottle to the fire extinguishing system via a connector; S2, using the connector to introduce a certain amount of test gas into the distribution pipeline; S3 displays the status of the fire suppression system on the touch screen; Step S1 includes the following steps: S11, take out a plug, scan the QR code on the plug to get its ID number; S12, After the display component obtains the ID number of the plug, it uses the plug to seal the fire extinguishing nozzle; after sealing, the position of the fire extinguishing nozzle is recorded; S13, take out the next plug, scan the QR code on the plug to obtain its ID number; after the display component obtains the ID number of the plug, use the plug to seal the next fire extinguishing nozzle; after sealing, record the position of the fire extinguishing nozzle; until all fire extinguishing nozzles are completed; S14, connect the test bottle connector on the connecting hose to the test bottle, and connect the fire extinguishing coupling connector on the connecting hose to the fire extinguishing inlet of the fire extinguishing system. Step S3 includes the following steps: S31, Controller Acquisition Pressure data collected by a pressure sensor; S32, determines whether there is blockage or leakage in the distribution pipeline based on the pressure data collected by the pressure sensor: S321, introduce 4 BAR pressure nitrogen into the distribution pipe; S322, determine the first The method to determine if the pipe corresponding to the plug is blocked is as follows: like ≤ ,in, Indicates the first The pressure value detected by the pressure sensor in the plug, Indicates the first The pressure value at the location of the plug. This represents the pressure error adjustment value; then the first... The pipe corresponding to the plug is blocked; =1, 2, 3, ... ; like > ,in, Indicates the first The pressure value detected by the pressure sensor in the plug, Indicates the first The pressure value at the location of the plug. This represents the pressure error adjustment value; then the first... The pipe corresponding to the plug is unobstructed; blockage detection complete. S323, open the pressure relief valve to release all the nitrogen in the distribution pipeline; then introduce 2 BAR pressure nitrogen into the distribution pipeline; S324, the method for determining whether the distribution pipe is leaking after 8 to 12 minutes is as follows: If the pressure drops by more than 0.2 BAR within 10 minutes, it indicates a leak in the pipeline. In this case, a flow test agent needs to be applied to the pipeline to determine the leak point.

5. The test method for the aircraft engine fire extinguishing bottle distribution pipeline according to claim 4, characterized in that, Step S2 includes the following steps: S20, close the pressure relief valve; S21, open the isolation valve to connect its downstream gas path and upstream gas path; S22, open the switch on the nitrogen cylinder to allow the nitrogen in the cylinder to flow out; S23, turn on the main switch to allow nitrogen gas to flow into the fire extinguishing system through the connecting hose; S24. After a certain period of time, the isolation valve is closed to isolate the downstream gas path from the upstream gas source. Or / and after step S3, step S4 is also included to end the test; the method for ending the test includes the following steps: S41, close the switch on the nitrogen cylinder to prevent nitrogen from flowing out of the cylinder; S42, turn off the main switch to allow nitrogen gas to flow into the fire extinguishing system through the connecting hose; S43, open the pressure relief valve to release the gas in its distribution pipeline; S44, open the isolation valve to connect the downstream gas path and the upstream gas path; S45, disconnect the test bottle connector on the flexible hose from the test bottle, and disconnect the fire extinguishing coupling connector on the flexible hose from the fire extinguishing inlet of the fire extinguishing system.

6. The test method for the aircraft engine fire extinguishing bottle distribution pipeline according to claim 5, characterized in that, The method for the plug to transmit the collected pressure data to the display component in step S31 includes the following steps: S311, have each plug received the test completion trigger signal? If the plug receives a test completion trigger signal, proceed to the next step; If the plug does not receive the test completion trigger signal, the pressure sensor continues to collect pressure data; S312, the controller inside the plug generates an XML file from all pressure values ​​collected by the pressure sensor at various times, and calculates the XML code of the XML file. The method for calculating the XML code of the XML file is as follows: ， in, Represents XML code. This indicates the method for calculating the XML code; here, the XML code is calculated using the MD5 hash digest method, and the result is a 16-bit hexadecimal character code. Represents an XML file; The XML code is used as the filename of the XML file. After using the XML code as the filename of the XML file, we get an XML file with the XML code filename. The XML file with the XML code filename is compressed to get an XML file package. The ID number of the plug is used as the filename of the XML file package. S313, Determine the number of files in an XML file package: If the XML file package contains only one file, the XML file package with the header ID number will be sent to the display component. If the number of files in the XML file package is greater than or equal to 2, delete the other files in the XML file package with the header ID number, leaving only the XML file with the XML code file name; send the XML file package with the header ID number to the display component; S314, After the controller in the display component receives the pressure data sent by the plug, the received pressure data is a pressure receiving packet. The pressure receiving packet is decompressed to obtain a decompressed file. The decompression code of the decompressed file is calculated. The method for calculating the decompression code of the decompressed file is as follows: ， in, This represents the decompression code. This indicates the method for calculating the decompression code; here, the decompression code is calculated using the MD5 hash digest method, and the result is a 16-bit hexadecimal character code. This indicates the file to be extracted; Check if the decompression code of the extracted file matches the filename of the extracted file: If the decompression code of the decompressed file does not match the file name of the decompressed file, the display component will re-request the plug corresponding to the file name of the pressure receiving packet to send pressure data; If the decompression code of the decompressed file matches the filename of the decompressed file, then the filename of the received packet is used as the ID number of the header, and the pressure values ​​at each time point are obtained from the decompressed file.

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