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Automatic detection and emergency treatment system for primary fan and fan hydraulic cylinder faults

A technology of automatic detection and emergency treatment, applied in the direction of machines/engines, mechanical equipment, non-variable-capacity pumps, etc., can solve the problems of lack of air in the furnace, out of control of fans, loss of primary air pressure of coal mills, etc., to ensure normal operation. , Reduce the difficulty and avoid the effect of a sudden drop in wind pressure

Pending Publication Date: 2021-07-23
HUANENG (GUANGDONG) ENERGY DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the power generation system of a power plant, the primary fan is the power source equipment for pulverized coal conveying wind, and the hydraulic cylinder of the primary fan is used as the adjustment device for the outlet pressure of the primary fan. The automatic adjustment of the system fails, and the pressure of the system drops sharply after the fan current is too high due to the failure of the hydraulic cylinder. The operation time of the whole process is only a few seconds. Lost, trigger protection mechanism, trip all pulverizers, cause unit trip
If the primary wind pressure is lost and the furnace is short of air, the negative pressure in the furnace is too large, and the high negative pressure may even cause the boiler to implode, which is extremely dangerous.
[0003] In view of the shortcomings of the above-mentioned existing systems for the fault detection and processing of the hydraulic cylinder of the primary fan, there is an urgent need for a system that can quickly and accurately detect and judge the operation of the hydraulic cylinder of the primary fan in real time and can quickly respond and respond when the hydraulic cylinder of the primary fan fails. Provide technical solutions with sufficient effective processing time to maintain the normal operation of the power generation system of the power plant

Method used

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  • Automatic detection and emergency treatment system for primary fan and fan hydraulic cylinder faults
  • Automatic detection and emergency treatment system for primary fan and fan hydraulic cylinder faults
  • Automatic detection and emergency treatment system for primary fan and fan hydraulic cylinder faults

Examples

Experimental program
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Effect test

Embodiment 1

[0057] An automatic fault detection and emergency treatment system for a primary fan and fan hydraulic cylinder adopts the following steps:

[0058] S1: The monitoring system monitors the operation of the primary fan, and initially monitors whether the primary fan is running normally;

[0059] S2: After collecting the operation data of each part of the primary fan obtained by the monitoring system, the real-time feedback is transmitted to the analysis system, and the analysis system obtains real-time primary fan current data and primary fan outlet pressure data, which are processed by the analysis system;

[0060] S3: The analysis system compares and monitors whether the operation data of the primary fan fed back by the monitoring system conforms to the preset judgment parameter value. Different fan models need to be adjusted and set different preset judgment parameter values, and the primary fan hydraulic cylinder is judged by the preset judgment parameter value. The state is...

Embodiment 2

[0066] An automatic fault detection and emergency treatment system for a primary fan and fan hydraulic cylinder adopts the following steps:

[0067] S1: The monitoring system monitors the operation of the primary fan, and initially monitors whether the primary fan is running normally;

[0068] S2: After collecting the operation data of each part of the primary fan obtained by the monitoring system, the real-time feedback is transmitted to the analysis system, and the analysis system obtains real-time primary fan current data and primary fan outlet pressure data, which are processed by the analysis system;

[0069] S3: The analysis system compares and monitors whether the operation data of the primary fan fed back by the monitoring system meets the preset judgment parameter values. The preset judgment parameter values ​​of the primary fan current data and outlet pressure data of the primary fan are: the primary fan current is preferably 380A, and The outlet pressure of the fan ...

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Abstract

The invention relates to the technical field of power plant power equipment protection systems, in particular to an automatic fault detection and emergency treatment system for primary fan and fan hydraulic cylinder faults. The automatic fault detection and emergency treatment system comprises the following steps: monitoring an operation condition of a primary fan; analyzing and acquiring operation data of the primary fan; comparing whether the operation data of the primary fan meets a preset judgment parameter value, and judging a working state of a primary fan hydraulic cylinder; judging the working state of the primary fan hydraulic cylinder, and sending a normal operation instruction or a switching adjustment instruction to an induced draft fan and the primary fan at the opposite side; and after a switching adjustment of the induced draft fan and the primary fan on the opposite side is completed, switching to a control system to carry out automatic adjustment access of an air supply system. The automatic fault detection and emergency treatment system has the advantages that a series of operations and adjustments are quickly performed after faults are automatically detected, so that advanced treatment is made for follow-up primary air pressure stability maintenance of the system and hearth pressure control, the faults of the primary fan hydraulic cylinder are pre-judged in advance, an air supply structure is automatically adjusted in time, and normal operation of a power generation system is effectively guaranteed.

Description

technical field [0001] The invention relates to the technical field of protection systems for power equipment in power plants, and more specifically, to an automatic fault detection and emergency treatment system for primary fans and fan hydraulic cylinders. Background technique [0002] In the power generation system of a power plant, the primary fan is the power source equipment for pulverized coal conveying wind, and the hydraulic cylinder of the primary fan is used as the adjustment device for the outlet pressure of the primary fan. The automatic adjustment of the system fails, and the pressure of the system drops sharply after the fan current is too high due to the failure of the hydraulic cylinder. The operation time of the whole process is only a few seconds. Lost, the protection mechanism is triggered, and all coal mills are tripped, causing the unit to trip. If the primary wind pressure is lost and the furnace is short of air, the negative pressure in the furnace i...

Claims

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Application Information

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IPC IPC(8): F04D27/00
CPCF04D27/00F04D27/001F04D27/002
Inventor 纪洁虹杨略杨扬生唐一多林泽鸿张家宽陈绍华
Owner HUANENG (GUANGDONG) ENERGY DEV CO LTD