Method for rapid detection of the quantity of insertion of a conduit of an aircraft fuel system

Abstract

The present application belongs to the technical field of aircraft assembly detection, and relates to a kind of quick detection method of aircraft fuel system conduit insertion quantity.The present application utilizes high-precision displacement sensor and linear laser sensor to realize high-precision measurement of conduit insertion quantity and eccentricity, compared with traditional manual measurement method, the method significantly reduces human error caused by space or line of sight obstruction and other problems, improves the accuracy and stability of measurement data, ensures the stability and effectiveness of the measurement system of the inspection work.The inspection device of the present application integrates automatic data acquisition and processing function, and can realize standardization of inspection operation through rotating platform, reduce operation difficulty and improve detection efficiency.Through the implementation of the present application, the detection quality and work efficiency of aircraft fuel conduit flange are significantly improved, and the assembly efficiency and aircraft safety are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of aircraft assembly detection, and relates to a rapid detection method for the insertion amount of an aircraft fuel system conduit. BACKGROUND

[0002] Aircraft fuel conduit assembly is the key to ensuring the safe operation of the fuel system. The traditional detection method relies on manual measurement and experience judgment, which is not only inefficient, but also difficult to meet the accuracy requirements. There is a large error when using steel ruler, plug gauge and gauge block for inspection by human, so a high-precision and automatic detection technology is needed to solve the above problems.

[0003] The displacement sensor and the linear laser sensor have the characteristics of non-contact, high precision and high stability. The application proposes a new type of automatic inspection method for the insertion amount and eccentricity of the flange plate of the aircraft fuel conduit based on the two sensors. Through data processing algorithm and three-dimensional modeling technology, high-precision and automatic detection of parameters is realized. The inspection device can continuously collect data during the rotation around the conduit, generate a three-dimensional model of the conduit in real time, and compare and analyze it with the theoretical model, and then intuitively display the deviation. SUMMARY

[0004] In order to solve the above problems, the application provides a rapid detection method for the insertion amount of the aircraft fuel system conduit, which can significantly improve the safety and reliability of the fuel system conduit assembly, and reduce the labor cost and potential operation risk.

[0005] The technical scheme of the application is as follows:

[0006] Detection principle of the insertion amount of the aircraft fuel system conduit

[0007] The insertion amount of the aircraft fuel system conduit refers to the depth of mutual insertion of two cooperating conduits when connected. Unqualified insertion amount will cause excessive vibration in the fuel system process, and then cause fuel supply interruption or instability, affecting flight safety. Therefore, the insertion amount of the fuel system conduit directly affects the sealing and reliability of the connection, which is an important parameter. The insertion amount h1 is defined as the distance from the lower end face of the inserted conduit to the upper end face of the inserted part, and the eccentricity ΔD=(D1-D2) / 2. Details are shown in Figure 7 .

[0008] The traditional detection method is to insert a steel ruler into the inserted conduit, align the starting point of the steel ruler with the lower end surface of the inserted conduit, keep the steel ruler vertical and close to the conduit, and measure the insertion amount h1 of the conduit, and measure the extreme value range of the eccentricity amount AD=D1-D2 by using a plug gauge, a gauge block or a steel ruler. The traditional method has the following problems in the measurement process, such as the steel ruler cannot be kept close to the conduit, the steel ruler is difficult to keep vertical, and the lower end of the conduit cannot be accurately positioned, and the like. The above problems need to be improved. The present application improves the measurement method of the two parameters of the insertion amount h1 and the eccentricity amount AD of the inserted conduit of the aircraft fuel system, and controls the two important parameters by using a digital measurement means.

[0009] Method for detecting insertion amount h1 of conduit of aircraft fuel system

[0010] As shown in Figure 8 , the present application uses a displacement sensor to realize digital detection of the insertion amount, one end of a sensor Z-shaped structure probe is fixed on a slide rail of a detection device, and the other end is forced to displace with the insertion of the lower edge of the conduit. The structure probe moves in the slide rail groove of the detection device, and the moving distance is captured and collected by the displacement sensor. When the conduit is assembled in place, the rotation platform is used to realize accurate measurement of the insertion amount of the conduit periphery.

[0011] Method for detecting eccentricity amount AD of conduit of aircraft fuel system

[0012] The present application uses the non-contact high-precision measurement capability of a linear laser sensor to realize digital detection of the eccentricity amount of the flange, and the traditional tools such as the plug gauge and the steel ruler can only provide single-point or discrete-point measurement data. The linear laser sensor can continuously collect data during the rotation of the conduit, and cooperates with a high-precision rotation platform to ensure continuous measurement of the conduit periphery. The linear laser sensor emits laser and receives the reflected light to realize high-precision scanning of the surface profile of the conduit, so as to calculate the eccentricity amount of the conduit. The structure of the linear laser sensor is shown in Figure 9 .

[0013] Principle of data collection for detecting conduit of aircraft fuel system

[0014] The detection data principle collection is divided into two parts of displacement sensor and linear laser sensor.

[0015] The displacement sensor detects the displacement change of the Z-shaped structure probe due to forced pressure, and the moving distance is converted into an electrical signal, which is transmitted to a processing unit through a data collection unit for analysis. The processing unit judges whether the insertion amount meets the requirements according to the pre-set product design inspection standard, and displays the results in real time, and triggers an alarm when the allowable range is exceeded. The detection principle of the displacement sensor is shown in Figure 10 .

[0016] The linear laser sensor is fixed on the inserted conduit, which continuously emits and receives reflected laser, the received light signal is converted into an electrical signal by a photodetector, the electrical signal is enhanced through a signal amplifier, and then converted into a digital signal through an analog-to-digital converter, the collected data points are calibrated and fitted by a processor through an algorithm, and a three-dimensional model of the collected data is constructed, finally, the conclusion is obtained by comparing and analyzing with the imported theoretical model, and the operator can observe the measurement data and analysis report through the user interface, and the linear laser sensor detection principle is as shown in Figure 11 .

[0017] In combination with the above principles and design schemes, the following technical solutions will be used to solve the technical problems:

[0018] The present application is based on displacement sensor and linear laser sensor to realize the digital measurement of the related parameters of the aircraft fuel system conduit insertion amount.

[0019] The aircraft fuel system conduit insertion amount rapid inspection device comprises a rotating platform, an insertion amount inspection module and an eccentric amount inspection module. The rotating platform comprises a multi-diameter series pipe mouth chuck, an extension adjusting rod, a pressing bolt, a rotating table and a connecting bolt. The multi-diameter series pipe mouth chuck is a fixed component of the present application, mainly composed of three separate metal chucks, and has a plurality of diameter series of pipe mouth chucks according to different conduit diameters, which can fix the inspection device on the conduit through the pressing force. The extension adjusting rod is a connecting structure of the present application, which is used for connecting the separate chucks. The pressing bolt is a fixing structure of the present application, which is installed on the pipe mouth chuck, and the separate chucks can be contracted and pressed through the pressing bolt, so that the inspection device can be fixed on the conduit flange plate. The rotating table is a rotating structure of the present application, and the inspection module can measure data around the conduit circle through the sliding rail slot on the rotating table. The connecting bolt is a fixing structure of the present application, which is used for connecting the multi-diameter series pipe mouth chuck and the rotating table and pressing.

[0020] The insertion amount inspection module is composed of an external structure and an internal electronic circuit. The appearance structure is mainly composed of a device shell, a digital display screen, an adjusting button, a data interface and a Z-shaped structure probe. The device shell is the main bearing and rotating structure of the application, which supports the device components, contains the internal equipment and realizes rotation on the rotating table through the sliding roller. The digital display screen is the display device of the application, which is used to display the inspection results in real time. The adjusting button is the input structure of the application, which is used for interactive control between the inspector and the device equipment, and is used for parameter setting, command control and the like. The data interface is the input structure of the application, which supports USB and Type-C interface forms, and is used to import aircraft models, control programs and the like. The Z-shaped structure probe is the displacement device of the application, and the structure probe will be forced to displace due to the insertion of the catheter pressure, thereby generating a displacement signal. The internal electronic circuit is mainly composed of a displacement sensor, a data acquisition unit and a data processing unit A. The displacement sensor is the sensing device of the application, which is used to detect the movement distance of the Z-shaped structure probe and convert the displacement signal into an electrical signal. The data acquisition unit is the receiving module of the application, which receives the electrical signal sent by the displacement sensor and transmits it to the processing module. The data processing unit A is the data processing module of the application, which sets the product inspection standard in advance according to manual input or external interface data import, compares the set standard with the collected data, and transmits the comparison result to the digital display screen for display.

[0021] The eccentricity inspection module is composed of an external structure and an internal electronic circuit. The appearance structure is mainly composed of a device shell, a digital display screen, an adjusting button, a data interface and a linear laser sensor. The device shell, the digital display screen, the adjusting button and the data interface are consistent with the insertion amount inspection module, and can share the appearance, shape and structure. The linear laser sensor is the transmitting and receiving device of the application, and the laser emitting probe on the sensor can continuously emit and receive reflected laser. The internal electronic circuit is mainly composed of a photoelectric detector, a signal amplifier, an analog-to-digital converter and a data processing unit B. The photoelectric detector is the conversion device of the application, which receives the laser signal emitted by the laser sensor and converts it into an analog signal. The signal amplifier is the signal adjusting device of the application, which adjusts, amplifies and filters the converted analog signal to improve the signal quality and strength. The analog-to-digital converter is the conversion device of the application, which is used to convert the analog signal into an electrical signal to facilitate the next step of processing by the related equipment. The data processing unit B is the data processing module of the application, which can realize functions such as calibration and fitting of received data points, and construct a three-dimensional model of the data. Finally, the conclusion is obtained by comparing with the imported model, and a data measurement result and analysis report is made.

[0022] The rapid detection method of the aircraft fuel system catheter insertion amount is as follows:

[0023] Step one: the rotating platform, the insertion amount inspection module and the eccentricity inspection module are checked before working. Check whether the appearance condition of the rotating platform structure is good, whether the module can normally rotate on the slide rail; under the condition of power on, check whether the display screen and other electronic equipment functions on the module device are intact; confirm that the service parts such as power supply line are within the effective period.

[0024] Step two: according to the diameter of the inspection pipe, the corresponding diameter series pipe nozzle chuck is pre-installed on the flange plate or nozzle of the inserted pipe, the telescopic adjusting rod is tightened by rotating the compression bolt to ensure that the chuck is firmly fixed on the pipe flange plate, and the rotating table is connected with the chuck by the connecting bolt and is tightened.

[0025] Step three: install the insertion amount inspection module on the rotating table, check whether the sliding roller on the shell is completely embedded in the clamping groove of the rotating table, press the adjustment button to start the inspection module, perform system self-checking and debugging, and import the detection parameters through the data interface.

[0026] Step four: insert the fuel pipe to be measured into the flange plate and place it at the specified detection position, at this time, the distal end of the Z-shaped structure probe should be pressed below the lower end of the pipe, press the adjustment button to activate the displacement sensor, rotate the device shell at a constant speed manually, observe the numerical value change on the digital screen, press the adjustment button to process the data, and observe the insertion amount detection result on the digital screen and record it in the system.

[0027] Step five: disassemble the pipe, press the adjustment button to close the insertion amount inspection module, remove the connection between the insertion amount inspection module and the rotating table, and repeat step three to install, debug and import the eccentricity inspection module.

[0028] Step six: insert the fuel pipe to be measured into the flange plate and place it at the specified detection position, press the adjustment button to activate the linear laser sensor, start collecting reference position data, rotate the device shell at a constant speed manually, observe the numerical value change on the digital screen, press the adjustment button to process the data, and observe the eccentricity detection result on the digital screen and record it in the system.

[0029] Step seven: disassemble the pipe, press the adjustment button to close the eccentricity inspection module, remove the connection between the eccentricity inspection module and the rotating table, disconnect the rotating table and the nozzle chuck, check the integrity of the disassembled device, and place it in the storage box.

[0030] The present application has the following advantages:

[0031] 1) Precise detection capability: high-precision displacement sensors and linear laser sensors are used to realize high-precision measurement of the catheter insertion amount and eccentricity, compared with the traditional manual measurement method, the method significantly reduces the human error caused by space or line of sight obstruction and the like, improves the accuracy and stability of the measurement data, and ensures that the measurement system of the inspection work is stable and effective.

[0032] 2) Standardized operation: the inspection device integrates automatic data acquisition and processing functions, and through the rotating platform, the standardization of the inspection operation can be realized, the operation difficulty is reduced, and the detection efficiency is improved.

[0033] 3) Data analysis and diagnosis: through actual measurement data, a reverse three-dimensional model is established, and compared with the theoretical model, the deviation condition is intuitively displayed, and the system has a diagnosis function, when the insertion amount or eccentricity exceeding the allowable range is detected, the detection personnel can be quickly fed back through the digital display device.

[0034] Through the implementation of the technical scheme, the detection quality and work efficiency of the aircraft fuel catheter flange are significantly improved, and the assembly efficiency and aircraft safety are improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a schematic diagram of displacement sensor detection;

[0036] Figure 2 is a schematic diagram of linear laser sensor detection;

[0037] Figure 3 is a structure diagram of the inspection device;

[0038] Figure 4 is a structure diagram of the insertion amount inspection device;

[0039] Figure 5 is a structure diagram of the displacement amount inspection device;

[0040] Figure 6 is a structure diagram of the fixed chuck;

[0041] Figure 7 is a size definition diagram;

[0042] Figure 8 is a Z-shaped probe structure diagram;

[0043] Figure 9 is a linear laser sensor structure diagram;

[0044] Figure 10 is a displacement sensor detection schematic diagram;

[0045] Figure 11 is a linear laser sensor detection schematic diagram.

[0046] Composed of: 1 - multi-diameter series of pipe orifice chuck, 2 - telescopic adjusting rod, 3 - compression bolt, 4 - rotating table, 5 - connecting bolt, 6 - device housing, 7 - digital display screen, 8 - adjusting button, 9 - data interface, 10 - Z-shaped structure probe, 11 - displacement sensor, 12 - data acquisition unit, 13 - data processing unit A, 14 - linear laser sensor, 15 - photoelectric detector, 16 - signal amplifier, 17 - analog-to-digital converter, 18 - data processing unit B. DETAILED DESCRIPTION

[0047] Example 1

[0048] The aircraft fuel system conduit insertion amount rapid inspection device comprises a rotating platform, an insertion amount inspection module and an eccentric amount inspection module. The rotating platform comprises a multi-diameter series of pipe orifice chuck 1, a telescopic adjusting rod 2, a compression bolt 3, a rotating table 4 and a connecting bolt 5. The multi-diameter series of pipe orifice chuck 1 is a fixed component of the present application, mainly composed of three separate metal chucks. According to different conduit diameters, there are multiple diameter series of pipe orifice chucks, which can be fixed on the conduit through compression force. The telescopic adjusting rod 2 is a connecting structure of the present application, used for connecting the separate chucks. The compression bolt 3 is a fixing structure of the present application, which is installed on the pipe orifice chuck. Through the compression bolt 3, the separate chucks can be contracted and compressed, so as to ensure that the inspection device can be fixed on the conduit flange plate. The rotating table 4 is a rotating structure of the present application. The inspection module can measure data around the conduit circle through the sliding rail slot on the rotating table. The connecting bolt 5 is a fixing structure of the present application, used for connecting the multi-diameter series of pipe orifice chuck 1 and the rotating table 4 and compressing them.

[0049] The insertion amount inspection module is composed of an external structure and an internal electronic circuit. The appearance structure is mainly composed of a device shell 6, a digital display screen 7, an adjusting button 8, a data interface 9, and a Z-shaped structure probe 10. The device shell 6 is the main bearing and rotating structure of the present application, which supports the device components, contains the internal equipment, and realizes rotation on the rotating table 4 through the sliding roller. The digital display screen 7 is the display device of the present application, which is used to display the inspection results in real time. The adjusting button 8 is the input structure of the present application, which is used for interactive control between the inspector and the device equipment, and is used for parameter setting, command control, etc. The data interface 9 is the input structure of the present application, which supports USB and Type-C interface forms, and is used to import airplane models, control programs, etc. The Z-shaped structure probe 10 is the displacement device of the present application, which will be forced to displace due to the insertion of the catheter pressure, thereby generating a displacement signal. The internal electronic circuit is mainly composed of a displacement sensor 11, a data acquisition unit 12, and a data processing unit A 13. The displacement sensor 11 is the sensing device of the present application, which is used to detect the movement distance of the Z-shaped structure probe and convert the displacement signal into an electrical signal. The data acquisition unit 12 is the receiving module of the present application, which receives the electrical signal sent by the displacement sensor and transmits it to the processing module. The data processing unit A 13 is the data processing module of the present application, which sets the product inspection standard in advance according to manual input or external interface data import, compares it with the collected data, and transmits the comparison result to the digital display screen 7 for display.

[0050] The eccentricity inspection module is composed of an external structure and an internal electronic circuit. The appearance structure is mainly composed of a device shell 6, a digital display screen 7, an adjusting button 8, a data interface 9, and a linear laser sensor 13. The device shell 6, the digital display screen 7, the adjusting button 8, and the data interface 9 are consistent with the insertion amount inspection module, and can share the appearance, shape, and structure. The linear laser sensor 14 is the transmitting and receiving device of the present application, and the laser emitting probe on the sensor can continuously emit and receive reflected laser. The internal electronic circuit is mainly composed of a photodetector 15, a signal amplifier 16, an analog-to-digital converter 17, and a data processing unit B 18. The photodetector 15 is the conversion device of the present application, which receives the laser signal emitted by the laser sensor and converts it into an analog signal. The signal amplifier 16 is the signal adjusting device of the present application, which adjusts, amplifies, and filters the converted analog signal to improve the signal quality and strength. The analog-to-digital converter 17 is the conversion device of the present application, which is used to convert the analog signal into an electrical signal to facilitate the next step of processing by the related equipment. The data processing unit B 18 is the data processing module of the present application, which can realize functions such as calibration and fitting of received data points, and construct a three-dimensional model of the data. Finally, the conclusion is obtained by comparing with the imported model, and the data measurement results and analysis report are made.

[0051] Example 2:

[0052] Step one: the rotating platform, the insertion amount checking module and the eccentricity checking module are checked before working. Check whether the appearance of the rotating platform structure is good, whether the module can rotate normally on the slide rail; check whether the electronic equipment functions such as the display screen on the module device are intact under the power-on state; confirm that the service parts such as the power supply line of the module are within the effective period.

[0053] Step two: according to the diameter of the check pipe, select the corresponding diameter series of the pipe nozzle chuck 1, pre-install it on the flange plate or pipe nozzle of the inserted pipe, tighten the telescopic adjusting rod 2 by rotating the compression bolt 3 to ensure that the chuck is firmly fixed on the pipe flange plate, and connect the rotating table 4 with the chuck by using the connecting bolt 5 and tighten it.

[0054] Step three: install the insertion amount checking module on the rotating table 4, check whether the sliding roller on the shell 6 is completely embedded in the clamping groove of the rotating table 4, press the adjusting button 8 to start the checking module, perform system self-checking and debugging, and import the detection parameters through the data interface 9.

[0055] Step four: insert the fuel pipe to be measured into the flange plate and place it at the specified detection position, at this time, observe that the distal end of the Z-shaped structure probe 10 should be pressed below the lower end of the pipe, press the adjusting button 8 to activate the displacement sensor 11, rotate the device shell 6 at a constant speed manually, observe the numerical value change on the digital screen 7, press the adjusting button 8 to process the data, and observe the insertion amount detection result on the digital screen 7 and record it in the system.

[0056] Step five: disassemble the pipe, press the adjusting button 8 to close the insertion amount checking module, remove the connection between the insertion amount checking module and the rotating table, and repeat step three to install, debug and import the eccentricity checking module.

[0057] Step six: insert the fuel pipe to be measured into the flange plate and place it at the specified detection position, press the adjusting button 8 to activate the linear laser sensor 14, start collecting reference position data, rotate the device shell 6 at a constant speed manually, observe the numerical value change on the digital screen 7, press the adjusting button 8 to process the data, and observe the eccentricity detection result on the digital screen 7 and record it in the system.

[0058] Step seven: disassemble the pipe, press the adjusting button 8 to close the eccentricity checking module, remove the connection between the eccentricity checking module and the rotating table 4, disconnect the rotating table 4 and the pipe nozzle chuck 1, check the integrity of the disassembled device, and place it in the storage box.

Claims

1. A rapid inspection device for the insertion depth of aircraft fuel system conduits, characterized in that, The device comprises a rotating platform, an insertion measurement module, and an eccentricity measurement module. The rotating platform includes a multi-diameter series pipe chuck (1), a telescopic adjustment rod (2), a clamping bolt (3), a rotating table (4), and a connecting bolt (5). The multi-diameter series pipe chuck (1) consists of three separate metal chucks. It has multiple diameter series pipe chucks according to different pipe diameters. The inspection device is fixed on the pipe by clamping force. The telescopic adjustment rod (2) is used to connect the separate chucks. The clamping bolt (3) is installed on the pipe chuck. The separate chucks can be contracted and clamped by clamping bolt (3) to ensure that the inspection device can be fixed on the pipe flange. The insertion measurement module and the eccentricity measurement module measure data around the pipe through the slide rail slot on the rotating table. The connecting bolt (5) is used to connect the multi-diameter series pipe chuck (1) and the rotating table (4) and clamp them. The insertion volume inspection module includes an external structure and internal electronic circuitry. The external structure includes a device housing (6), a digital display screen (7), adjustment buttons (8), a data interface (9), and a Z-shaped probe (10). The device housing (6) supports the device components, accommodates the internal equipment, and rotates on a rotary table (4) via sliding rollers. The digital display screen (7) displays the inspection results in real time. The adjustment buttons (8) control the interaction between the inspection personnel and the device. The eccentricity check module includes a device housing (6), a digital display screen (7), an adjustment button (8), a data interface (9), a data processing unit A (13), and a linear laser sensor (14); the device housing (6), the digital display screen (7), the adjustment button (8), and the data interface (9) are the same as those in the insertion check module.

2. The rapid inspection device for aircraft fuel system conduit insertion depth as described in claim 1, characterized in that, The internal electronic circuitry of the insertion measurement module includes a displacement sensor (11), a data acquisition unit (12), and a data processing unit A (13). The displacement sensor (11) is used to detect the moving distance of the Z-shaped probe and convert the displacement signal into an electrical signal. The data acquisition unit (12) receives the electrical signal emitted by the displacement sensor and transmits it to the processing module. The data processing unit A (13) pre-sets the product inspection standard according to the method of manual input or external interface data import, compares it with the collected data, and transmits the comparison result to the digital display screen (7) for display.

3. The rapid inspection device for the insertion depth of aircraft fuel system conduits as described in claim 1 or 2, characterized in that, The data interface (9) supports USB and Type-C interfaces; the Z-shaped probe (10) will undergo forced displacement changes due to the pressure of the inserted catheter, thereby generating a displacement signal.

4. The rapid inspection device for the insertion depth of aircraft fuel system conduits as described in claim 1 or 2, characterized in that, The laser emitting probe of the linear laser sensor (14) continuously emits and receives reflected laser light; the internal electronic circuit of the linear laser sensor (14) includes a photodetector (15), a signal amplifier (16), an analog-to-digital converter (17), and a data processing unit B (18).

5. The rapid inspection device for the insertion depth of aircraft fuel system conduits as described in claim 4, characterized in that, The photodetector (15) receives the laser light signal emitted by the laser sensor and converts it into an analog signal.

6. The rapid inspection device for aircraft fuel system conduit insertion depth as described in claim 4, characterized in that, The analog signal converted by the signal amplifier (16) is adjusted, amplified and filtered by the signal amplifier (16) to improve the signal quality and strength.

7. The rapid inspection device for aircraft fuel system conduit insertion depth as described in claim 4, characterized in that, The analog-to-digital converter (17) is used to convert analog signals into electrical signals.

8. The rapid inspection device for aircraft fuel system conduit insertion depth as described in claim 4, characterized in that, The data processing unit B (18) performs calibration and fitting functions for receipt data points, constructs a three-dimensional model of the data, draws conclusions through comparative analysis with the imported model, and produces data measurement results and analysis reports.

9. A rapid detection method for the insertion depth of an aircraft fuel system conduit, characterized in that, The specific steps of using the rapid inspection device for the insertion amount of aircraft fuel system conduits according to any one of claims 1-8 are as follows: Step 1: Perform pre-operation checks on the rotating platform, insertion measurement module, and eccentricity measurement module; Step 2: Select the corresponding diameter series pipe chuck (1) according to the diameter of the inspected conduit and pre-install it on the flange or pipe end of the conduit to be inserted. Tighten the telescopic adjustment rod (2) by rotating the clamping bolt (3) to ensure that the chuck is securely fixed on the conduit flange. Connect the rotating table (4) to the chuck using the connecting bolt (5) and tighten it. Step 3: Install the insertion measurement module onto the rotary table (4), check whether the sliding rollers on the housing (6) are fully embedded in the slots of the rotary table (4), press the adjustment button (8) to turn on the measurement module, perform system self-test and debugging, and import the detection parameters through the data interface (9); Step 4: Insert the fuel line to be tested into the flange and place it in the designated test position. At this time, observe that the distal end of the Z-shaped probe (10) should be pressed below the lower port of the line. Press the adjustment button (8) to activate the displacement sensor (11), manually rotate the device housing (6) at a constant speed, observe the changes in the values ​​on the digital display screen (7), press the adjustment button (8) to process the data, observe the insertion amount test results on the digital display screen (7), and record them in the system. Step 5: Disassemble the catheter, press the adjustment button (8) to close the insertion volume check module, disconnect the insertion volume check module from the rotary table, and repeat step 3 to install, debug and import the eccentricity check module; Step 6: Insert the fuel line to be tested into the flange and place it in the designated detection position. Press the adjustment button (8) to activate the linear laser sensor (14) and start collecting reference position data. Manually rotate the device housing (6) at a constant speed and observe the changes in values ​​on the digital display screen (7). Press the adjustment button (8) to process the data and observe the eccentricity detection results on the digital display screen (7) and record them in the system. Step 7: Disassemble the conduit, press the adjustment button (8) to turn off the eccentricity check module, disconnect the eccentricity check module from the rotary table (4), disconnect the rotary table (4) from the pipe chuck (1), check the integrity of the disassembled device, and place it in the storage box.

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