A multi-parameter-based state evaluation method for large and medium-sized low-lift vertical pump units

Abstract

A method for evaluating the state of large and medium-sized low-lift vertical water pump units based on multiple parameters, belonging to the technical field of state evaluation of water pump units, by decomposing large and medium-sized low-lift vertical water pump units into 9 parts of the main motor and 6 For the main water pump of the component, the state quantities of each component are generated through the comprehensive inspection data, test data, monitoring data and online monitoring data, and each state quantity is classified, and the main motor and the main water pump are separately calculated by using the comprehensive deduction method. The operating state is evaluated. The principle of this evaluation method is clear, and it can clearly reflect the operating state of the water pump unit to ensure safe operation. Compared with the traditional point inspection test evaluation, the evaluation parameters of the present invention are more comprehensive, and provide a better solution for the maintenance of the water pump unit. The effective basis saves a lot of labor costs and overcomes the shortcomings of small monitoring range and lack of experienced operation and management personnel to conduct scientific and comprehensive evaluation and maintenance of pumping stations on a regular basis.

Description

technical field [0001] The invention belongs to the technical field of water pump unit state evaluation, and relates to a water pump unit state evaluation method, in particular to a multi-parameter-based large and medium-sized low-lift vertical water pump unit state evaluation method. Background technique [0002] With the needs of social development and economic construction, water pump stations play an increasingly important role in drainage, irrigation, urban water supply, ecological environment restoration, and cross-basin water transfer. The water pump unit is the key main equipment of the water pump station, and its operating status directly affects the safe operation of the pump station. A large and medium-sized low-head vertical water pump unit consists of a vertically installed motor and an axial-flow or mixed-flow water pump. Each device is composed of several components, and different components are related to each other and tightly coupled. Due to the complex st...

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Problems solved by technology

Due to the complex structure of the pump unit and the harsh working environment, different forms of failures will occur

During the operation of the pumping station, if any component works abnormally, it may be amplified by the system, resulting in failure or failure of the entire equipment system

[0003] At present, the state evaluation methods of electric power equipment are widely used, but there is no corresponding evaluation standard for the state evaluation of water pump units, and there is no corresponding basis for the decomposition of evaluation equipment components. At present, large and medium-sized pumping stations generally rely on computer monitoring systems to realize pump However, there are deficiencies such as small monitoring range, high labor costs, and lack of experienced operation and management personnel to conduct scientific and reasonable comprehensive evaluation and maintenance of pumping stations on a regular basis.

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