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Experiment method for detecting light fuel oil component content in aerooil

A technology of aviation lubricating oil and test method, which is applied in the test field of detecting the content of light fuel oil in aviation lubricating oil, can solve the problems of inability to judge low-boiling point mixtures, etc., save repair time, save manpower and material resources, and judge accurately high rate effect

Active Publication Date: 2009-07-22
PLA NO 5719 FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Since this method can only judge whether there are low-boiling point mixtures, but cannot judge the amount of low-boiling point mixtures

Method used

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  • Experiment method for detecting light fuel oil component content in aerooil
  • Experiment method for detecting light fuel oil component content in aerooil
  • Experiment method for detecting light fuel oil component content in aerooil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The content of light fuel components in aviation lubricating oil with grade 8B was determined by a closed flash point tester. The light fuel oil can be kerosene or No. 3 jet fuel. According to the present invention, can carry out as follows:

[0017] Unused kerosene and unused aviation lubricating oil were prepared into mixed test oils in different proportions. First weigh the mixed test oil samples prepared with mixed oils with different contents, stir them evenly, and let them stand for at least three days.

[0018] Determine raw flash point values ​​for RP-3 and 8B. Randomly measure the closed flash point of RP-3 that entered the factory at different times (different production dates, batches, and manufacturers), measure different closed flash points, and find out the average flash point temperature of RP-3 based on these flash point values . Randomly measure the closed flash point of 8B that entered the factory at different times (different production dates, bat...

Embodiment 2

[0034] Determination of Light Components and Kerosene Contents in 8B Aviation Lubricating Oil by Distillation Range Tester

[0035] The distillation range of petroleum products refers to the relationship between the amount of oil that can be distilled from the petroleum product and the temperature within a certain temperature range. It uses the heating principle to heat the oil into steam, and then re-forms liquid through condensation. This distillation is conditional, and the amount distilled is only a relative comparison.

[0036] Due to the different components of different oil products, the light components evaporate quickly and only need a lower temperature to evaporate. On the contrary, the heavy components need a higher temperature to complete the distillation process. During the test, the cooling time of the test instrument is (30-60) min and the distillation time is 45 min, and the whole test takes about 2 hours. At the same time, because petroleum products are compo...

Embodiment 3

[0038] Determination of Light Components and No. 3 Jet Fuel in 8B Aviation Lubricating Oil by Measuring Method of Kinematic Viscosity

[0039] The method of measuring kinematic viscosity refers to measuring the time for a certain volume of liquid to flow through a calibrated capillary viscometer under gravity at a constant temperature. The product of the capillary constant of the viscometer and the flow time is the kinematic viscosity.

[0040] The standard stipulates that when measuring the kinematic viscosity, the constant temperature of the test must be determined first, and the constant temperature of the viscosity constant temperature tank must be kept constant for more than 15 minutes. Determine the viscosity tube according to the specified viscosity value of the product and ensure that the time through the capillary is not less than 200s.

[0041] In each test, the viscosity tube coefficient should be calculated first, and viscosity tubes with different diameters shoul...

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Abstract

The invention provides a test method for detecting the contents of light fuel components in aeroplane oil, which comprises the following steps: (1) a closed flash point tester is used for measuring the closed flash points of various batches of light fuel and aeroplane oil so as to find out the average flash temperature of the light fuel and the aeroplane oil; two tested flash point temperature values are taken as the starting point of a flash point-content trendency curve chart; (2) the light fuel and the aeroplane oil are prepared into mixing testing oils at different ratios; the closed flash temperature of the test oil is measured; (3) the trendency curve chart of the contents of the kerosene in the aeroplane oil is drawn according to the measured closed flash point temperature and the proportion of the contents of kerosene in the mixing testing oils; the content of the kerosene component mixed in the aeroplane oil is calculated by a repression equation. The test method decides the proportion of the kerosene contents in the aeroplane oil by using the content tendency chart of No. 3 jet fuel in 8B aeroplane oil and can accurately determine the amount of the contents of the kerosene in batch mode, has the high judgment accuracy and simple operation.

Description

technical field [0001] The invention relates to a test method for detecting the content of light fuel oil in aviation lubricating oil. In particular, test methods for the determination of kerosene content in aviation lubricating oils Background technique [0002] During the engine test run, it is necessary to determine the amount of light fuel oil (such as kerosene) contained in the oil seal oil (such as 8B aviation lubricating oil). The relationship between the content of light components. At present, there are many types of test methods and instruments available for the determination of light components in aviation lubricating oil (such as brand 8B). For example: use the principle of distillation to distill light components to determine whether they contain light components; use the change of kinematic viscosity of petroleum products to determine the content of light components, etc. These methods are time-consuming and laborious, and the measurement time needs to be bet...

Claims

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Application Information

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IPC IPC(8): G01N25/52
Inventor 李咏
Owner PLA NO 5719 FACTORY
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