Method for detecting lubricating oil leakage of exhaust device of accessory gearbox of turboshaft aero-engine

Abstract

The present application relates to the technical field of aero-engine, and especially relates to a kind of turbine shaft aero-engine accessory casing exhaust device lubricating oil leakage amount detection method, it includes the following steps: a, making detection device b, the engine connecting end of connecting air pipe is connected together with the exhaust hole of engine accessory casing;C, engine work test;D, after engine work test is completed, the weight of lubricating oil in lubricating oil collection tank is measured;E, the weight of lubricating oil amount and the time of engine work are calculated to obtain the lubricating oil leakage amount of engine accessory casing exhaust device.The method can realize the measurement of turbine shaft aero-engine accessory casing exhaust device lubricating oil leakage amount, so as to obtain the parameter of engine accessory casing exhaust device lubricating oil leakage amount.

Description

Technical Field

[0001] This invention relates to the field of aero-engine technology, and in particular to a method for detecting the amount of lubricating oil leakage in the exhaust device of the accessory casing of a turboshaft aero-engine. Background Technology

[0002] Engine oil consumption is a key performance parameter of aero engines and an important acceptance indicator during aero engine testing. The main reason for high engine oil consumption is lubricant leakage, so it is necessary to detect the amount of lubricant leakage in the main parts of the engine.

[0003] Currently, the exhaust port of the accessory casing of turboshaft aero-engine is provided, and lubricating oil can be discharged from this exhaust port, which means that there is a lubricating oil leakage. However, there are no detection methods for the amount of oil leakage of the accessory casing exhaust device in China or abroad, which affects the assessment of the amount of oil leakage of the engine accessory casing exhaust device, and thus affects the assessment of the overall performance parameters of the engine. Summary of the Invention

[0004] The technical problem solved by the present invention is to provide a method for detecting the amount of lubricating oil leakage in the exhaust device of the accessory casing of a turboshaft aero-engine. The method can realize the measurement of the amount of lubricating oil leakage in the exhaust device of the accessory casing of a turboshaft aero-engine.

[0005] The technical solution adopted by this invention to solve its technical problem is: a method for detecting the amount of lubricating oil leakage in the exhaust device of the accessory casing of a turboshaft aero-engine, comprising the following steps:

[0006] a. Make a testing device, the testing device includes a connecting air pipe, an oil-gas separator and a lubricating oil collection tank. The oil-gas separator is provided with an oil-gas inlet, an air outlet and a lubricating oil outlet. One end of the connecting air pipe is connected to the engine, and the other end is connected to the oil-gas inlet. The lubricating oil collection tank is connected to the lubricating oil outlet.

[0007] b. Connect the engine connection end of the air hose to the exhaust port of the engine accessory housing;

[0008] c. The engine is put into operation. The oil and gas generated during the test enter the oil-gas separator through the connecting air pipe. The oil-gas separator separates the oil and gas. The air is discharged from the air outlet, and the lubricating oil is discharged from the lubricating oil outlet and collected in the lubricating oil collection tank.

[0009] d. After the engine operation test is completed, measure the weight of the lubricating oil in the lubricating oil collection tank;

[0010] e. Calculate the amount of lubricating oil leaking from the engine accessory casing exhaust device by measuring the weight of the lubricating oil and the engine operating time.

[0011] Furthermore, the connecting tube is a flexible tube.

[0012] Furthermore, the oil-gas inlet is located in the middle of the oil-gas separator, the air outlet is located at the top of the oil-gas separator, and the lubricating oil outlet is located at the bottom of the oil-gas separator.

[0013] The beneficial effects of this invention are: the method for detecting the amount of lubricating oil leakage in the exhaust device of the accessory casing of a turboshaft aero-engine is capable of measuring the amount of lubricating oil leakage in the exhaust device of the accessory casing of a turboshaft aero-engine, thereby obtaining parameters of the amount of lubricating oil leakage in the exhaust device of the engine accessory casing. Furthermore, the detection device manufactured by this invention has a simple structure and is convenient to use. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an oil-gas separator;

[0015] The markings are: oil-gas separator 1, oil-gas inlet 2, air outlet 3, lubricating oil outlet 4. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0017] like Figure 1 As shown, the method for detecting lubricating oil leakage in the exhaust device of the accessory casing of a turboshaft aero-engine of the present invention includes the following steps:

[0018] a. Make a testing device, the testing device includes a connecting air pipe, an oil-gas separator 1 and a lubricating oil collection tank. The oil-gas separator 1 is provided with an oil-gas inlet 2, an air outlet 3 and a lubricating oil outlet 4. One end of the connecting air pipe is connected to the engine, and the other end is connected to the oil-gas inlet 2. The lubricating oil collection tank is connected to the lubricating oil outlet 4.

[0019] b. Connect the engine connection end of the air hose to the exhaust port of the engine accessory housing;

[0020] c. The engine is tested. The oil and gas generated during the test enter the oil-gas separator 1 through the connecting air pipe. The oil-gas separator 1 separates the oil and gas. The air is discharged from the air outlet 3, and the lubricating oil is discharged from the lubricating oil outlet 4 and collected in the lubricating oil collection tank.

[0021] d. After the engine operation test is completed, measure the weight of the lubricating oil in the lubricating oil collection tank;

[0022] e. Calculate the amount of lubricating oil leaking from the engine accessory casing exhaust device by measuring the weight of the lubricating oil and the engine operating time.

[0023] The oil leakage of the lubricating oil in the exhaust device of the engine accessory housing refers to the weight of lubricating oil discharged from the exhaust port of the engine accessory housing exhaust device per unit time. This invention can measure the oil leakage of the lubricating oil in the exhaust device of the turboshaft aero-engine accessory housing, thereby obtaining the parameters of the oil leakage of the lubricating oil in the engine accessory housing exhaust device. Furthermore, the detection device manufactured by this invention has a simple structure and is easy to use.

[0024] For ease of use, a flexible tube is preferred for connecting the air tube.

[0025] To facilitate the operation of oil-gas separator 1 and improve its separation efficiency, for example... Figure 1 As shown, the oil-gas inlet 2 is located in the middle of the oil-gas separator 1, the air outlet 3 is located at the top of the oil-gas separator 1, and the lubricating oil outlet 4 is located at the bottom of the oil-gas separator 1.

Claims

1. A method for detecting oil leakage in the exhaust system of an accessory casing of a turboshaft aero-engine, characterized in that, Includes the following steps: a. Make a testing device. The testing device includes a connecting air pipe, an oil-gas separator (1) and a lubricating oil collection box. The oil-gas separator (1) is provided with an oil-gas inlet (2), an air outlet (3) and a lubricating oil outlet (4). The oil-gas inlet (2) is located in the middle of the oil-gas separator (1), the air outlet (3) is located at the top of the oil-gas separator (1), and the lubricating oil outlet (4) is located at the bottom of the oil-gas separator (1). One end of the connecting air pipe is the engine connection end, and the other end is connected to the oil-gas inlet (2). The lubricating oil collection box is connected to the lubricating oil outlet (4). b. Connect the engine connection end of the air hose to the exhaust port of the engine accessory housing; c. The engine is tested. The oil and gas generated during the test enter the oil-gas separator (1) through the connecting air pipe. The oil-gas separator (1) separates the oil and gas. The air is discharged from the air outlet (3), and the lubricating oil is collected in the lubricating oil collection box from the lubricating oil outlet (4). d. After the engine operation test is completed, measure the weight of the lubricating oil in the lubricating oil collection tank; e. Calculate the amount of lubricating oil leaking from the engine accessory casing exhaust device by measuring the weight of the lubricating oil and the engine operating time.

2. The method for detecting lubricating oil leakage in the exhaust device of the accessory casing of a turboshaft aero-engine as described in claim 1, characterized in that: The connecting tube is a flexible tube.

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