Comprehensive tester for fuel oil and lubricating oil pressure of aircraft engine

Abstract

The utility model belongs to the field of aircraft engines, and discloses an aircraft engine fuel oil and lubricating oil pressure comprehensive tester which comprises a box body, an adjusting unit is arranged in the box body, and the input end of the adjusting unit is used for being connected with a power source. The adjusting unit is respectively connected with the pressure indicator and the pressure sensor through the first testing cable and the second testing cable, integration of pressure and temperature parameter testing is achieved, testing personnel can complete testing and adjusting of lubricating oil pressure, fuel oil pressure and lubricating oil temperature without frequent switching and operation among multiple devices, and the testing efficiency is improved. The pressure input of the pressure indicator is accurately adjusted through the adjustable power supply, and the temperature input of the lubricating oil is adjusted through the potentiometer, so that an operator can accurately set required pressure and temperature parameters according to actual test requirements, the accuracy and reliability of test data are ensured, and the test efficiency is improved. And test errors caused by inaccurate parameter setting are effectively avoided.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft engine technology and relates to an aircraft engine fuel and lubricating oil pressure comprehensive tester. Background Technology

[0002] The fuel and lubricating oil pressure measurement system for aircraft engines is a core monitoring unit ensuring the safe and stable operation of aircraft engines. Its performance and accuracy directly affect the condition monitoring, fault diagnosis, and maintenance of the power system. The fuel and lubricating oil pressure measurement system configured in an aircraft engine consists of three parts: a pressure sensor, a pressure indicator, and a lubricating oil temperature sensor. The pressure sensor collects fuel and lubricating oil pressure signals in real time, the pressure indicator converts the signals into visual parameters, and the lubricating oil temperature sensor monitors the lubricating oil temperature. The coordinated operation of this system provides crucial data support for aircraft engine health management.

[0003] Due to the lack of dedicated ground calibration equipment compatible with the airborne systems, maintenance units mainly rely on general-purpose instruments or non-standard modified equipment for component testing during the periodic calibration of pressure sensors and pressure indicators. However, this approach has the following problems:

[0004] 1. The verification process requires the cooperation of multiple devices, which is complex and inefficient.

[0005] 2. The lack of standardized technical support for lubricating oil temperature calibration has resulted in a long-term lack of standardized lubricating oil temperature calibration. Utility Model Content

[0006] The purpose of this invention is to provide a comprehensive tester for the fuel and lubricating oil pressure of aircraft engines, addressing the shortcomings of the existing technology.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: an aircraft engine fuel and lubricating oil pressure comprehensive tester, including a housing, an adjustment unit is provided in the housing, the input end of the adjustment unit is used to connect to a power supply, the adjustment unit is connected to a pressure indicator through a first test cable and to a pressure sensor through a second test cable, the pressure indicator adjusts the lubricating oil pressure or fuel pressure input through an adjustable power supply, and adjusts the lubricating oil temperature input through a potentiometer.

[0008] Furthermore, the adjustment unit includes a first switch, a second switch, and a third switch; one end of the first switch is connected to the main power supply, and the other end is connected to the first power supply, the pressure indicator, and the adjustable power supply respectively; one end of the second switch is connected to the adjustable power supply, and the other end is connected to the pressure indicator; one end of the third switch is connected to the potentiometer, and the other end is connected to the ohmmeter or the pressure indicator.

[0009] Furthermore, the regulating unit also includes a fourth switch and a fifth switch; one end of the fourth switch is connected to a voltmeter, and the other end is connected to either the second switch or the fifth switch; one end of the fifth switch is connected to the fourth switch, and the other end is connected to a pressure sensor.

[0010] Furthermore, the second switch is a switching switch for calibrating fuel pressure or lubricating oil pressure in the pressure indicator; the fourth switch is a switching switch for pressure sensor and pressure indicator testing; and the fifth switch is a switching switch for fuel pressure and lubricating oil pressure testing in the pressure sensor.

[0011] Furthermore, the pressure sensor is supplied with a pressure source by a hand-cranked diaphragm pressure gauge tester to simulate lubricating oil pressure input; the pressure sensor is supplied with a pressure source by a high-pressure pump to simulate fuel pressure input.

[0012] Furthermore, the total power supply is 28V, and the adjustable power supply is 0V. A 5V adjustable power supply, the first power supply being a 15V power supply.

[0013] Furthermore, the fuel pressure input voltage is 0. With a DC voltage of 5V, the pressure indicator will display 0. 100 The fuel pressure value.

[0014] Furthermore, the lubricating oil pressure input voltage is 0. With a DC voltage of 5V, the pressure indicator will display 0. 10 The lubricating oil pressure value.

[0015] Furthermore, the lubricating oil temperature is 73.70°C. A resistance value of 153.10Ω will cause the pressure indicator to display -50. Temperature value of 150℃.

[0016] Furthermore, the adjustment unit also includes an emergency stop button.

[0017] Compared with the prior art, the present invention has the following beneficial technical effects:

[0018] This utility model discloses a comprehensive tester for aircraft engine fuel and lubricating oil pressure. The adjustment unit is installed inside a housing. The adjustment unit is connected to a pressure indicator via a first test cable and to a pressure sensor via a second test cable, achieving integrated testing of pressure and temperature parameters. Testers no longer need to frequently switch and operate multiple devices; they only need to make simple settings on this device to complete the testing and adjustment of lubricating oil pressure, fuel pressure, and lubricating oil temperature. This simplifies the testing process, improves testing efficiency, and allows operators to obtain the required test data more quickly and efficiently.

[0019] This utility model discloses a comprehensive pressure tester for aircraft engine fuel and lubricating oil. It uses an adjustable power supply to precisely adjust the pressure input of the pressure indicator and a potentiometer to regulate the lubricating oil temperature input. Operators can accurately set the required pressure and temperature parameters according to actual testing needs, ensuring the accuracy and reliability of test data and effectively avoiding test errors caused by inaccurate parameter settings. Furthermore, the enclosure provides excellent protection for the internal components, reducing interference from external environmental factors during the testing process and further improving the stability of test results.

[0020] This utility model discloses a comprehensive tester for aircraft engine fuel and lubricating oil pressure. By adjusting the parameters of the adjustable power supply and potentiometer, it can simulate various lubricating oil pressure, fuel pressure and lubricating oil temperature conditions, and is suitable for a variety of different test scenarios and objects.

[0021] This utility model discloses a comprehensive tester for the fuel and lubricating oil pressure of aircraft engines. When a fault occurs or maintenance is required, maintenance personnel can quickly open the housing to inspect and repair the internal components without large-scale disassembly. During the installation and commissioning phase, if an abnormal operation is found, pressing the emergency stop button can quickly stop the equipment, making it convenient for maintenance personnel to troubleshoot the problem and determine the fault point. During maintenance, it can also stop the operation of relevant components, ensuring the safety of maintenance personnel and reducing maintenance costs and time. Attached Figure Description

[0022] Figure 1 This is a structural diagram of a comprehensive tester for the fuel and lubricating oil pressure of an aircraft engine according to the present invention;

[0023] Figure 2 This is a schematic diagram of a comprehensive tester for the fuel and lubricating oil pressure of an aircraft engine according to the present invention.

[0024] Figure label:

[0025] 1-Enclosure; 2-First test cable; 3-Second test cable. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0027] Example 1

[0028] This utility model discloses a comprehensive tester for aircraft engine fuel and lubricating oil pressure, comprising a housing 1, wherein an adjustment unit is provided inside the housing 1. The input terminal of the adjustment unit is used to connect to a power supply. The adjustment unit is connected to a pressure indicator through a first test cable 2 and to a pressure sensor through a second test cable 3. The pressure indicator adjusts the lubricating oil pressure or fuel pressure input through an adjustable power supply and adjusts the lubricating oil temperature input through a potentiometer.

[0029] like Figure 1 As shown, an aircraft engine fuel and lubricating oil pressure integrated tester can independently calibrate pressure sensors and pressure indicators. The pressure indicator can measure fuel pressure, lubricating oil pressure, and lubricating oil temperature. The fuel pressure input voltage is 0. With a DC voltage of 5V, the pressure indicator will display 0. 100 Fuel pressure value; lubricating oil pressure input voltage is 0. With a DC voltage of 5V, the pressure indicator will display 0. 10 The lubricating oil pressure value; the lubricating oil temperature is 73.70. A resistance value of 153.10Ω will cause the pressure indicator to display -50. The temperature value is 150℃. The pressure indicator is activated by simulating DC voltage and resistance input values. The accuracy of the simulated DC voltage and resistance values ​​is monitored using standard voltmeters and ohmmeters. The accuracy of the pressure indicator is determined by comparing the correct data with the actual data.

[0030] The main power supply provides 15V DC power to the pressure indicator. A pressure source applies corresponding hydraulic pressure to the fuel pressure channel and lubricating oil pressure channel, causing the pressure sensor to output a corresponding voltage value. This voltage value is measured by a voltmeter, and the accuracy of the pressure sensor's operation is determined by comparing the measured data with the actual data. Specifically, the pressure sensor is supplied with a pressure source from a hand-cranked diaphragm pressure gauge tester to simulate lubricating oil pressure input, while the pressure sensor is supplied with a pressure source from a high-pressure pump to simulate fuel pressure input.

[0031] The pressure source provides hydraulic pressure to the fuel pressure channel and the lubricating oil pressure channel. The voltage values ​​output by the pressure sensor in the fuel pressure channel and the lubricating oil pressure channel are measured by a multimeter in voltage mode. The output accuracy requirements for the fuel pressure channel are shown in Table 1, and the output accuracy requirements for the lubricating oil pressure channel are shown in Table 2.

[0032] Table 1

[0033]

[0034] Table 2

[0035]

[0036] The adjustment unit is connected to a pressure indicator via a first test cable 2 and to a pressure sensor via a second test cable 3. The pressure indicator adjusts the lubricating oil pressure or fuel pressure input via an adjustable power supply and adjusts the lubricating oil temperature input via a potentiometer. By precisely adjusting the pressure input of the pressure indicator via the adjustable power supply and regulating the lubricating oil temperature input via the potentiometer, operators can accurately set the required pressure and temperature parameters according to actual testing needs, ensuring the accuracy and reliability of test data and effectively avoiding test errors caused by inaccurate parameter settings.

[0037] like Figure 2 As shown, the total power supply is 28V, and the adjustable power supply is 0V. A 5V adjustable power supply is provided, with the first power supply being a 15V power supply. The adjustment unit includes a first switch, a second switch, a third switch, a fourth switch, and a fifth switch. One end of the first switch is connected to the main power supply, and the other end is connected to the first power supply, a pressure indicator, and the adjustable power supply, respectively. One end of the second switch is connected to the adjustable power supply, and the other end is connected to the pressure indicator. One end of the third switch is connected to a potentiometer, and the other end is connected to a ohmmeter or a pressure indicator. One end of the fourth switch is connected to a voltmeter, and the other end is connected to either the second or fifth switch. One end of the fifth switch is connected to the fourth switch, and the other end is connected to a pressure sensor.

[0038] The second switch is a switching switch for calibrating fuel pressure or lubricating oil pressure in the pressure indicator; the fourth switch is a switching switch for pressure sensor and pressure indicator testing; and the fifth switch is a switching switch for fuel pressure and lubricating oil pressure testing in the pressure sensor.

[0039] The first switch is a power switch, used to supply power to the primary power source, pressure indicator, and adjustable power source. The second switch is a selector switch for calibrating either fuel pressure or lubricating oil pressure indication on the pressure indicator. The third switch is a selector switch for inputting the analog resistor for the lubricating oil temperature of the pressure indicator, enabling the output of the potentiometer's analog resistor. The fourth switch is a selector switch for testing either the pressure sensor or the pressure indicator, enabling 0... 5V voltage measurement. The fifth switch is a selection switch for lubricating oil pressure or fuel pressure in the pressure sensor, enabling selection of fuel pressure or lubricating oil pressure testing.

[0040] The pressure input of the pressure indicator is adjusted by an adjustable power supply, and the lubricating oil temperature input is adjusted by a potentiometer. Operators can quickly and accurately set the required pressure and temperature parameters according to different testing needs. This not only facilitates the testing process but also meets the testing requirements under various complex operating conditions, ensuring the accuracy and reliability of the test results.

[0041] The adjustment unit also includes an emergency stop button. In case of emergencies or abnormalities, testers do not need to perform complicated procedures. They can simply press the emergency stop button to immediately cut off the relevant circuits, stop the operation of the test equipment, avoid potential dangers or equipment damage, respond quickly to abnormalities, and ensure that the test work is carried out efficiently and safely.

[0042] The working principle of this utility model, a comprehensive tester for aircraft engine fuel and lubricating oil pressure, is as follows: An external pressure source is used to input data, causing the pressure sensor to generate voltage output signals for the fuel and lubricating oil pressures. By acquiring these voltage signals, the accuracy of the measured values ​​is calibrated, and the pressure values ​​are checked in segments. The brightness control function of the pressure indicator is checked using a 28V DC power supply. Simultaneously, an adjustable power supply is used to complete accuracy tests such as synchronous digital voltage indication comparison and verification of pressure values, thus realizing the performance check of all components of the entire system.

[0043] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

Claims

1. A comprehensive tester for aircraft engine fuel and lubricating oil pressure, characterized in that: Includes a housing (1), in which an adjustment unit is provided. The input end of the adjustment unit is used to connect to a power supply. The adjustment unit is connected to a pressure indicator via a first test cable (2) and to a pressure sensor via a second test cable (3). The pressure indicator adjusts the lubricating oil pressure or fuel pressure input via an adjustable power supply and adjusts the lubricating oil temperature input via a potentiometer.

2. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 1, characterized in that: The adjustment unit includes a first switch, a second switch, and a third switch; One end of the first switch is connected to the main power supply, and the other end is connected to the first power supply, the pressure indicator, and the adjustable power supply respectively. One end of the second switch is connected to an adjustable power supply, and the other end is connected to a pressure indicator; One end of the third switch is connected to a potentiometer, and the other end is connected to a resistance meter or pressure indicator.

3. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 2, characterized in that: The adjustment unit also includes a fourth switch and a fifth switch; One end of the fourth switch is connected to the voltmeter, and the other end is connected to the second or fifth switch. One end of the fifth switch is connected to the fourth switch, and the other end is connected to the pressure sensor.

4. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 3, characterized in that: The second switch is a toggle switch in the pressure indicator for verifying fuel pressure or lubricating oil pressure testing; The fourth switch is a switching switch for pressure sensor and pressure indicator testing; The fifth switch is a switching switch for testing fuel pressure and lubricating oil pressure in the pressure sensor.

5. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 1, characterized in that: The pressure sensor is supplied with a pressure source by a hand-cranked diaphragm pressure gauge tester to simulate lubricating oil pressure input; The pressure sensor is powered by a high-pressure pump, simulating fuel pressure input.

6. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 2, characterized in that: The total power supply is 28V, the adjustable power supply is 0 5V adjustable power supply, the first power supply is 15V power supply.

7. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 1, characterized in that: The fuel pressure input voltage is 0 5V DC voltage, the pressure indicator shows 0 100 fuel pressure value.

8. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 1, characterized in that: The oil pressure input voltage is 0 5V DC voltage, the pressure indicator shows 0 10 oil pressure value.

9. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 1, characterized in that: Lubricating oil temperature 73.70 153. a resistance value of 10 Ω, then the pressure indicator displays -50 150 a temperature value of 150 °C.

10. The aircraft engine fuel and lubricating oil pressure comprehensive tester according to claim 2, characterized in that: The adjustment unit also includes an emergency stop button.

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