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Real-time online monitoring system for boiler expansion displacement and node networking method

A monitoring node and monitoring system technology, applied in the general control system, control/regulation system, comprehensive factory control, etc., to achieve good maintainability, avoid the expansion and spread of accidents, and good engineering implementability

Pending Publication Date: 2018-08-17
AVIC BEIJING CHANGCHENG AVIATION MEASUREMENT & CONTROL TECH INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The AC / DC switching power supply module converts alternating current to direct current to supply power to the entire monitoring node

Method used

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  • Real-time online monitoring system for boiler expansion displacement and node networking method
  • Real-time online monitoring system for boiler expansion displacement and node networking method
  • Real-time online monitoring system for boiler expansion displacement and node networking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0038] Taking the site node layout of a 660MW generating set boiler as an example, the monitoring nodes and coordinators are distributed in the boiler workshop space. In order to improve the effective coverage of the signal, the coordinator is located in the middle of the fifth floor of the boiler. In order to increase the field strength of the communication transmission, the system adds a repeater directly opposite the coordinator. The whole system is powered by 220V AC power supply.

[0039] The Zigbee coordinator collects the displacement data of all the monitoring nodes in the network by way of query. The collected effective information is sent to the central control computer located in the central control room by RS485 cable according to the Modbus protocol. The configuration interface on the central control computer is responsible for analyzing and displaying the displacement information gathered by the coordinator, and at the same time saving and recording these data, ...

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PUM

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Abstract

The invention belongs to the technical field of online state monitoring, and relates to a real-time online monitoring system for boiler expansion displacement and a node networking method. The systemis applied to the detection of the spatial variation after deformation and expansion of a large boiler. In combination with the specific application environment of a boiler field, the system collectsand transmits data in a Zigbee wireless networking mode. A technician can further provides improvement suggestions for the design and maintenance of the boiler by accumulating a large amount of expansion displacement monitoring data. Secondly, the system innovatively combines the wireless communication technology with the configuration method to be successfully applied to the boiler field environment, and has achieved a good effect. Finally, the real-time online monitoring system for boiler expansion displacement and the node networking method provided by the invention have good maintainability and engineering implementation, and is also simple and convenient in system failure check.

Description

technical field [0001] The invention belongs to the technical field of on-line state monitoring, and relates to a real-time on-line monitoring system for boiler expansion displacement and a node networking method. Background technique [0002] The structural components of modern boilers are connected to each other in different ways to form a strong whole. Various parts of the boiler will generate expansion force due to different temperatures. After the boiler is ignited, the expansion center will be displaced according to the predetermined expansion direction. Under normal circumstances, the displacement of the expansion center will be within a reasonable range. However, when the expansion is hindered or the guide device fails, the actual expansion coefficient will deviate greatly from the design value, and the stress of the relevant stressed components will also change, resulting in a decrease in component life and even short-term failure. These all bring huge hidden dan...

Claims

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Application Information

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IPC IPC(8): G05B19/418H04W4/38
CPCH04W4/38G05B19/4185G05B2219/31088Y02P90/02
Inventor 刘阁高云端刘德峰张梅菊庞健王竞翔
Owner AVIC BEIJING CHANGCHENG AVIATION MEASUREMENT & CONTROL TECH INST