Nuclear power emergency diesel engine multi-working-condition early-warning state monitoring and diagnosis analysis system and method

A technology for diagnosis and analysis of diesel engines, applied in the direction of internal combustion engine testing, etc., can solve problems such as easy loss of fault information, diesel engine running status, difficulty in discovering and judging potential diesel engine failures, and inability to capture the periodic characteristics of diesel engines, so as to save labor costs and ensure safe operation. , Conducive to the effect of daily management and maintenance

Inactive Publication Date: 2018-09-28
GUANGDONG NUCLEAR POWER JOINT VENTURE +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for a diesel engine with a complex structure and many vibration excitation sources, the process parameters cannot effectively reflect the structural faults of the unit, and the off-line detection cannot capture the periodic char

Method used

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  • Nuclear power emergency diesel engine multi-working-condition early-warning state monitoring and diagnosis analysis system and method
  • Nuclear power emergency diesel engine multi-working-condition early-warning state monitoring and diagnosis analysis system and method
  • Nuclear power emergency diesel engine multi-working-condition early-warning state monitoring and diagnosis analysis system and method

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Embodiment 1

[0038] This embodiment provides a method for monitoring and diagnosing the early warning status of multi-working conditions of nuclear power emergency diesel engines. This method is mainly used for monitoring and diagnosing the multi-working conditions early warning status of emergency diesel engines in million-level nuclear power plants. This method can also be used for other Detection and diagnostic analysis of diesel engines or electric motors.

[0039] Such as figure 1 As shown, the nuclear power emergency diesel engine multi-working condition early warning state monitoring and diagnosis analysis method of this embodiment includes the following steps:

[0040] S001: collect signals;

[0041] Set multiple sampling points on the main components of the emergency diesel engine in advance, and collect the state signals of all sampling points on the emergency diesel engine through high-frequency continuous acquisition technology according to the structure and operating characte...

Embodiment 2

[0057] This embodiment provides a nuclear power emergency diesel engine multi-working condition early warning state monitoring and diagnostic analysis system. This system is used to implement the nuclear power emergency diesel engine multi-working condition early warning state monitoring and diagnostic analysis method in the first embodiment.

[0058] Such as image 3 As shown, the nuclear power emergency diesel engine multi-working condition early warning state monitoring and diagnosis analysis system in this embodiment mainly includes a collector 1 and a processor 2, and the collector 1 is connected to the processor 2 by signals.

[0059] Such as Figure 4 The collector 1 shown has a plurality of collection terminals, and the collection terminals correspond to the sampling points of the emergency diesel engine one by one, and can be directly contacted and collected, or can be collected through other transition pieces. The collector 1 realizes high-frequency collection of st...

Embodiment 3

[0067] This embodiment provides the actual application of the nuclear power emergency diesel engine multi-working condition early warning state monitoring and diagnosis analysis system and method of the first and second embodiments in a nuclear power plant.

[0068] The system and method are applied to L2LHQ (UD45 diesel engine) and L3LHP (MTU956 diesel engine) by utilizing the L213 overhaul window and the L307 overhaul window respectively, and the application effect is good. Later, it will be installed on site through the transformation process.

[0069] Contribution of this application to the productivity of nuclear power plants:

[0070] L213 overhaul monitors the re-appraisal process of the L2LHQ diesel engine through this system, and finds the abnormality of "the first jog exhaust low-speed stage, each cylinder of the 001MO diesel engine does not ignite, and the speed fluctuates greatly", investigate and confirm the replacement of the governor after shutdown Finally, the...

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Abstract

The invention relates to the technical field of a diesel engine control system of million-grade nuclear power, and discloses a nuclear power emergency diesel engine multi-working-condition early-warning state monitoring and diagnosis analysis system and method. The method comprises the following steps: acquiring the state signal of an emergency diesel engine; periodically intercepting the state signal and converting the state signal into an angular domain signal, and defining the operation state of the emergency diesel engine in the different phases in a period; and comparing the intercepted and converted state signal with a health state model, and evaluating the operation state of the emergency diesel engine. Due to the fact that the collected state signal is converted into the angular domain signal, the operation and acting processes of the emergency diesel engine can be identified, and a health state model is built in advance to serve as a pre-warning model for comparison, so that the system and the method can find the potential faults of the emergency diesel engine in time, and the fault information can be stored in time, the safety operation of the emergency diesel engine is guaranteed, the daily management and maintenance of the emergency diesel engine is facilitated, and the labor cost is saved.

Description

technical field [0001] The invention relates to the technical field of a diesel engine control system for a million-level nuclear power plant, in particular to a multi-working-condition early warning state monitoring and diagnosis analysis system and method for a nuclear power emergency diesel engine. Background technique [0002] A nuclear power plant, also known as a nuclear power plant, is a power plant that uses the energy released by nuclear fission (Nuclear Fission) or nuclear fusion (Nuclear Fusion) reactions to generate electricity. Nuclear power plants currently in commercial operation use nuclear fission reactions to generate electricity. Nuclear power plants are generally divided into two parts: nuclear islands that use nuclear fission to produce steam (including reactor devices and primary loop systems) and conventional islands that use steam to generate electricity (including turbogenerator systems). The fuel used is generally radioactive heavy metals: uranium, ...

Claims

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Application Information

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IPC IPC(8): G01M15/05
CPCG01M15/05
Inventor 周勇张兰岐朱鹏树陈星梁永飞荆哲靳文金
Owner GUANGDONG NUCLEAR POWER JOINT VENTURE
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