CN-122014639-A - Mud pump full life cycle-oriented degradation simulation test system and evaluation method

CN122014639ACN 122014639 ACN122014639 ACN 122014639ACN-122014639-A

Abstract

The invention relates to the technical field of engineering equipment operation reliability test and service life evaluation, in particular to a degradation simulation test system and an evaluation method for the whole service life cycle of a mud pump, which comprises a plurality of independently controllable loading units and test evaluation units, wherein each loading unit is respectively used for loading a physical field, the test evaluation unit corrects the degradation model according to the real-time physical field data and the actual measurement data, adjusts the loading combination mode of the loading units and reloads the physical field according to the error conditions of different degradation operation modules in the degradation model correction process, repeats the process to obtain a corrected degradation model, and evaluates the service life of the mud pump based on the degradation model. According to the invention, flexible loading of multi-factor combination is realized by combining an innovative degradation model design with a plurality of independently controllable loading units, degradation data is accurately acquired, and the problem that a mud pump test platform in the prior art cannot carry out a mud pump degradation simulation test based on multi-physical field coupling is solved.

Inventors

LI YUAN
LIU DONGHAI
WEI JIJUN
Dong hengrui
ZOU JING
ZENG HUI
LUO YUHUI
YUAN HAIBIN
LU LEI
Dai Langhai
SONG TINGTING
GAO YINGZHI
LI JINWEI
CHEN RONGQIN
ZHANG PENG
XU XIANGDONG
WANG WANGMING

Assignees

中交广州航道局有限公司
中交广航疏浚有限公司

Dates

Publication Date: 20260512
Application Date: 20260306

Claims (10)

1. The degradation simulation test system for the whole life cycle of the mud pump is characterized by comprising a plurality of independently controllable loading units and a test evaluation unit, wherein each loading unit is used for loading a physical field of a degradation factor to the mud pump, and the test evaluation unit is used for executing the following steps: The method comprises the steps of firstly, establishing an initial degradation model, wherein the degradation model comprises a plurality of degradation operation modules, each degradation operation module corresponds to degradation effect of one degradation factor or coupling of a plurality of degradation factors, and is used for inputting mud pump state data and physical field data of each degradation factor, and outputting prediction data of a mud pump life quantization index after cooperative operation of the plurality of degradation operation modules; Step two, acquiring real-time physical field data of a loading unit and actual measurement data of a mud pump life quantization index after the loading unit loads the physical field; step three, correcting a degradation model according to real-time physical field data and actual measurement data, and adjusting loading combination modes of a plurality of loading units and reloading the physical field according to error conditions of different degradation operation modules in the degradation model correction process; And step four, repeatedly executing the step two and the step three to obtain a corrected degradation model, and evaluating the service life of the mud pump based on the degradation model.
2. The mud pump life cycle oriented degradation simulation test system of claim 1, wherein the modifying the degradation model according to the real-time physical field data and the measured data, and according to the error conditions of different degradation operation modules in the degradation model modification process, adjusting the loading combination modes of the plurality of loading units and reloading the physical field comprises: correcting a degradation operation module in the degradation model according to the real-time physical field data and the actual measurement data; obtaining an error leading module according to the correction quantity of each degradation operation module; and according to the type of degradation corresponding to the error leading module, adjusting loading combination modes of the loading units and reloading the physical field.
3. The mud pump life cycle-oriented degradation simulation test system according to claim 2, wherein the degradation model comprises a plurality of coupling operation layers, the plurality of degradation operation modules are distributed in the plurality of coupling operation layers, the number of coupled degradation factors represented by each coupling operation layer is gradually increased, the degradation operation modules representing the same coupling relation of the degradation factors between adjacent coupling operation layers are connected, output data of the former degradation operation module is used as input data of the later connected degradation operation module, the degradation operation module of the first layer is used for inputting physical field data and mud pump state data of the corresponding type, and the degradation operation module of the last layer is used for outputting prediction data.
4. The mud pump life cycle oriented degradation simulation test system of claim 3, wherein the degradation factors include abrasion, aging and cavitation, the plurality of coupling operation layers include a single-factor operation layer, a two-factor coupling layer and a three-factor coupling layer, the degradation operation module in the single-factor operation layer is used for inputting physical field data and mud pump state data of corresponding types and outputting a first intermediate vector, the degradation operation module in the two-factor coupling layer is used for inputting the first intermediate vector corresponding to the coupled degradation factor represented by the degradation operation module and outputting a second intermediate vector, and the three-factor coupling layer is used for inputting all second intermediate vectors and outputting prediction data.
5. The mud pump life cycle oriented degradation simulation test system of claim 3, wherein the degradation operation module in the degradation model is modified according to real-time physical field data and measured data, comprising: obtaining an operation path of the error leading module according to the degradation model; freezing other degradation operation modules except the operation path in the degradation model; And correcting the degradation operation module in the operation path according to the real-time physical field data and the actual measurement data.
6. The mud pump life cycle oriented degradation simulation test system of claim 5, wherein the degradation operation module in the correction operation path based on the real-time physical field data and the measured data comprises: Inputting the real-time physical field data into the degradation model to obtain predicted data output by the degradation model; Obtaining an error function according to the difference between the predicted data and the measured data; and correcting the degradation operation module in the operation path in a gradient descent mode based on the error function.
7. The mud pump full life cycle oriented degradation simulation test system of claim 2, wherein the error-inducing module is derived from the correction amount of each degradation operation module, comprising: counting the sum of adjustment amounts of each parameter in each degradation operation module to be used as the correction amount of each degradation operation module; And selecting the degradation operation module with the highest correction amount as an error leading module.
8. The mud pump full life cycle oriented degradation simulation test system of claim 1, wherein establishing an initial degradation model comprises: randomly setting parameters in the degradation model; And based on the physical fields independently loaded by the loading unit and based on the real-time physical field data of the loading unit and the actual measurement data of the mud pump life quantization index after the physical fields are independently loaded, correcting random parameters in the degradation model to obtain an initial degradation model.
9. The mud pump full life cycle-oriented degradation simulation test system of claim 1, wherein the degradation factors comprise abrasion, aging and cavitation, the loading unit comprises an automatic sand water supply unit, a temperature-humidity vibration comprehensive loading cabin and a controllable cavitation induction unit, and the mud pump life quantization index comprises at least one of a lift retention rate, a shaft power fluctuation coefficient, an acoustic emission frequency spectrum characteristic, a vibration amplitude change rate and a flow efficiency.
10. The degradation simulation test evaluation method for the full life cycle of the mud pump is applied to the degradation simulation test system for the full life cycle of the mud pump according to any one of claims 1 to 9, and is characterized by comprising the following steps: The method comprises the steps of firstly, establishing an initial degradation model, wherein the degradation model comprises a plurality of degradation operation modules, each degradation operation module corresponds to degradation effect of one degradation factor or coupling of a plurality of degradation factors, and is used for inputting mud pump state data and physical field data of each degradation factor, and outputting prediction data of a mud pump life quantization index after cooperative operation of the plurality of degradation operation modules; Step two, acquiring real-time physical field data of a loading unit and actual measurement data of a mud pump life quantization index after the loading unit loads the physical field; step three, correcting a degradation model according to real-time physical field data and actual measurement data, and adjusting loading combination modes of a plurality of loading units and reloading the physical field according to error conditions of different degradation operation modules in the degradation model correction process; And step four, repeatedly executing the step two and the step three to obtain a corrected degradation model, and evaluating the service life of the mud pump based on the degradation model.

Description

Mud pump full life cycle-oriented degradation simulation test system and evaluation method Technical Field The invention relates to the technical field of engineering equipment operation reliability test and service life evaluation, in particular to a degradation simulation test system and an evaluation method for the whole service life cycle of a mud pump. Background The mud pump is used as a core execution component of the high-concentration sediment conveying system, can experience complex working condition impact, structural fatigue and abrasion evolution in long-time continuous operation, and has obvious multi-factor coupling characteristic in performance degradation. Especially in actual engineering, the service life of the dredge pump is synergistically influenced by the following key factors of long-term abrasion action of a sand-containing medium, aging acceleration action of environment temperature and humidity and vibration load and sudden damage caused by cavitation impact under unsteady working conditions. The existing test platform is focused on single factor loading (such as a rack containing sand damage), lacks a multi-source degradation loading system capable of reproducing real service working conditions, and cannot obtain performance evolution data of the mud pump in a complete life cycle. Therefore, a degradation simulation test system facing the whole life cycle of the mud pump, which can simulate the coupling effect of multiple physical fields at the same time, is needed to provide support for analyzing the life rule of the mud pump and constructing a prediction model. Disclosure of Invention Therefore, the invention provides a degradation simulation test system and an evaluation method for the whole life cycle of a mud pump, which are used for solving the problem that a mud pump test platform in the prior art cannot carry out a mud pump degradation simulation test based on multi-physical field coupling. The invention provides a degradation simulation test system for the whole life cycle of a mud pump, which comprises a plurality of independently controllable loading units and a test evaluation unit, wherein each loading unit is used for loading a physical field of a degradation factor to the mud pump, and the test evaluation unit is used for executing the following steps: The method comprises the steps of firstly, establishing an initial degradation model, wherein the degradation model comprises a plurality of degradation operation modules, each degradation operation module corresponds to degradation effect of one degradation factor or coupling of a plurality of degradation factors, and is used for inputting mud pump state data and physical field data of each degradation factor, and outputting prediction data of a mud pump life quantization index after cooperative operation of the plurality of degradation operation modules; Step two, acquiring real-time physical field data of a loading unit and actual measurement data of a mud pump life quantization index after the loading unit loads the physical field; step three, correcting a degradation model according to real-time physical field data and actual measurement data, and adjusting loading combination modes of a plurality of loading units and reloading the physical field according to error conditions of different degradation operation modules in the degradation model correction process; And step four, repeatedly executing the step two and the step three to obtain a corrected degradation model, and evaluating the service life of the mud pump based on the degradation model. In a preferred scheme, the method comprises the steps of correcting a degradation model according to real-time physical field data and measured data, adjusting loading combination modes of a plurality of loading units according to error conditions of different degradation operation modules in the degradation model correction process, and reloading the physical field, wherein the method comprises the following steps: correcting a degradation operation module in the degradation model according to the real-time physical field data and the actual measurement data; obtaining an error leading module according to the correction quantity of each degradation operation module; and according to the type of degradation corresponding to the error leading module, adjusting loading combination modes of the loading units and reloading the physical field. In a preferred scheme, the degradation model comprises a plurality of coupling operation layers, a plurality of degradation operation modules are distributed in the coupling operation layers, the number of coupled degradation factors represented by each coupling operation layer is gradually increased, the degradation operation modules representing the same coupling relation of the degradation factors between adjacent coupling operation layers are connected, output data of the previous layer of degradation operation module is used as i