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Real-time calculation method for three-level over-limit safety risk of pressure of main steam pipeline

A technology of main steam pressure and pipeline pressure, which can be used in calculation, measurement of fluid pressure, complex mathematical operations, etc., and can solve problems such as real-time calculation methods that have not been reported.

Pending Publication Date: 2022-07-29
XIAN THERMAL POWER RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the real-time calculation method for the safety risk of the three-level overrun of the main steam pipeline pressure in thermal power plants

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  • Real-time calculation method for three-level over-limit safety risk of pressure of main steam pipeline
  • Real-time calculation method for three-level over-limit safety risk of pressure of main steam pipeline
  • Real-time calculation method for three-level over-limit safety risk of pressure of main steam pipeline

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Embodiment Construction

[0046] In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only The embodiments are part of the present invention, not all of the embodiments, and are not intended to limit the scope of the present disclosure. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts disclosed in the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0047] The accompanying drawings show a schematic structural diagram of an embodiment accor...

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Abstract

The invention discloses a real-time calculation method for three-level over-limit safety risks of main steam pipeline pressure. The method comprises the following steps that whether kth-level over-pressure occurs or not is judged according to the kth-level over-pressure state SBk (ti-1) of each main steam pressure measuring point at the previous moment ti-1 and the kth-level over-pressure state SBk (ti) of each main steam pressure measuring point at the current moment ti; when the kth-level overpressure occurs, calculating the real-time overpressure safety risk value Rjk (ti) of each main steam pressure measuring point at the current moment ti according to the occurrence moment of the kth-level overpressure; according to the real-time overpressure safety risk value Rjk (ti) of each main steam pressure measuring point at the current moment ti, calculating an accumulated overpressure safety risk value Rj of each main steam pressure measuring point up to the calculation moment; and according to the accumulated overpressure safety risk value Rj of each main steam pressure measuring point up to the calculation moment, calculating the accumulated overpressure safety risk value R of the main steam pipeline up to the calculation moment. According to the method, the three-level overpressure safety risk of the pressure of the main steam pipeline is calculated in real time.

Description

technical field [0001] The invention belongs to the technical field of the thermal power generation industry, and relates to a real-time calculation method for the safety risk of the third-level over-limit pressure of a main steam pipeline. Background technique [0002] The main steam system of a thermal power plant is to send the steam generated by the boiler to the steam turbine to do work. It is composed of the main steam pipeline, valve and drain device from the outlet header of the boiler superheater to the main steam valve of the steam turbine inlet. Among them, the main steam pipeline is the most important part. As one of the four major pipelines of thermal power plants, its importance is self-evident. [0003] Because the main steam pressure value of thermal power generating units is often several hundred times the atmospheric pressure, such as ultra-supercritical units, the value can reach 27MPa (270 times the atmospheric pressure), considering safety, the main stea...

Claims

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Application Information

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IPC IPC(8): G06F17/11G06Q50/06G01L11/00H02J13/00
CPCG06F17/11G06Q50/06G01L11/00H02J13/00002
Inventor 王大鹏杜保华吴智群吕佩哲王博柴胜凯王耀辉
Owner XIAN THERMAL POWER RES INST CO LTD
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