Gear pump maintenance method based on digital twinning
A gear pump and gear technology, applied in the field of gear pump maintenance based on digital twins, can solve the problems of gear pump performance degradation, affecting the overall performance of the system, insufficient pressure and flow of the hydraulic system, etc.
Active Publication Date: 2021-08-13
XI AN JIAOTONG UNIV
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Problems solved by technology
However, the diagnosis and prediction of the early weak faults of the gear pump cannot be made well. At the same time, the performance degradation of the gear pump cannot be evaluated and predicted in time, resulting in insufficient pressure and flow of the entire hydraulic system, which seriously affects the overall performance of the system, especially when the gear pump is used in aviation. In the engine fuel system, insufficient pressure and flow are often fatal failures. Therefore, a digital twin model of the gear pump based on physical knowledge is established to mirror the degradation performance and failure of the gear pump from time to time, dynamically reflecting the life cycle of the gear pump. own vital signs
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[0059] The following will refer to the accompanying drawings Figure 1 to Figure 4 Specific examples of the present invention are described in more detail. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.
[0060] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentione...
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The invention discloses a gear pump maintenance method based on digital twinning, which comprises the following steps of: measuring and receiving working condition parameters of a gear pump in real time, calculating the volumetric efficiency and the limit rotating speed of the gear pump based on the working condition parameters to evaluate the running state of the gear pump and pre-estimating the failure, and calculating the central positions of driving and driven gears of the gear pump and the abrasion loss of a friction pair, in a flow field in the gear pump, establishing a gear pump pressure pulsation model based on a lumped parameter method, establishing a digital twin model of the gear pump, and taking the pressure pulsation at an outlet of the gear pump as a monitoring signal of a prediction maintenance model.
Description
technical field [0001] The invention belongs to the field of gear pump operation and maintenance, in particular to a digital twin-based gear pump maintenance method. Background technique [0002] Because of its compact structure, small size, light weight, low price, low sensitivity to oil pollution, and good self-priming performance, gear pumps are widely used in electric power, automobiles, metallurgy, military, aviation, aerospace, and chemical industries. The main failure mode of gear pumps during use is the decrease in volumetric efficiency caused by leakage. The leakage of the gear pump includes internal leakage and external leakage. The external leakage is visible to the naked eye and can be solved by replacing the seal; the leakage that causes the volumetric efficiency to decrease is mainly the internal leakage, which is the process of the oil in the high-pressure chamber flowing to the low-pressure chamber through the gap between the friction pairs. Including the en...
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Login to View More IPC IPC(8): G06F30/27G06F30/28G06N3/04G06N3/08F04C2/14F04B51/00G06F113/08G06F119/08G06F119/14
CPCG06F30/27G06F30/28F04C2/14F04B51/00G06N3/04G06N3/08G06F2119/14G06F2119/08G06F2113/08
Inventor 严如强许文纲周峥孙闯田绍华王志颖梁清华
Owner XI AN JIAOTONG UNIV