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Method for recognizing flow state of granular material in raw coal bin of thermal power plant

A granular material and flow state technology, applied in the direction of electrical program control, sequence/logic controller program control, etc., can solve the problems that various related data of granular materials cannot be directly monitored in real time, and the difficulty of testing the flow state of granular materials, etc. , to achieve the effect of solving the difficult problem of particle material flow measurement, high degree of intelligence, and simple signal acquisition

Active Publication Date: 2013-10-30
吉林省航虹科技有限公司
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Problems solved by technology

[0002] At present, the sealed conveying of granular materials is used in many industries, such as: the thermal department that uses coal as the main raw material to provide heat, etc. This kind of industry requires high airtightness when conveying granular materials. Difficulties arise in the testing of the material flow state, especially the inability to directly monitor various relevant data of the granular material in the flow process in real time

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  • Method for recognizing flow state of granular material in raw coal bin of thermal power plant

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Embodiment Construction

[0016] Concrete steps of the present invention are:

[0017] a. Start to power on, the electrical control cabinet controls the computer to start working, and detects the location and status of the hardware equipment;

[0018] b. Determine whether the control system is in the automatic running state. If it is in the automatic state, the program will go down to step d, otherwise perform manual operation. When there is no operation in the manual state, the software is always in the scanning state;

[0019] c. All the buttons on the control cabinet can be manually operated, and the actuator can be operated;

[0020] d. Store the initial state parameters of the controlled equipment in the computer, store the generator set load command value in f0, the coal feeder speed signal feedback value in c0, and the coal feeder speed signal value in z0, and judge the above signals , if the speed of the fuel conveyor is normal, return to cycle scanning, otherwise a control signal is sent to i...

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Abstract

The invention relates to a method for recognizing a flow state of granular materials in a raw coal bin of a thermal power plant, which belongs to the field of power generation projects. The invention aims to provide a method for recognizing the flow state of granular materials in the raw coal bin of the thermal power plant, which obtains real-time data in the delivery process of the granular materials in high-tightness delivery equipment. The method comprises the following concrete steps of: powering on and judging whether a control system is in an automatic running state; storing the initial state parameters of controlled equipment into a computer, respectively obtaining a rotating speed value and a feedback value once every one second and calculating an online measuring value; controlling software to start a three-phase motor in a hydraulic station at first; controlling an electromagnetic valve to start a mechanical executing mechanism to work by the software; and judging the working effect according to a feedback signal. The method solves the technical problem that the slowly flowing fuel can not be directly detected due to the tight characteristic of an industrial material bin and flow abrasion and pollution of materials and is applied to the material bin blockage preventing work of the industries of power, chemical industry, mine, coal and grain.

Description

technical field [0001] The invention belongs to the field of power generation engineering. Background technique [0002] At present, the sealed conveying of granular materials is used in many industries, such as: the thermal department that uses coal as the main raw material to provide heat, etc. This kind of industry requires high airtightness when conveying granular materials. Difficulties arise in the testing of the material flow state, especially the inability to directly monitor various relevant data of the granular material in the flow process in real time. Contents of the invention [0003] The purpose of the present invention is to provide a method for identifying the flow state of granular materials in raw coal bunkers of thermal power plants for obtaining real-time data during the conveying process of granular materials inside highly airtight conveying equipment. [0004] Concrete steps of the present invention are: [0005] a. Start to power on, the electrical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
Inventor 张卫红党克岳俊红
Owner 吉林省航虹科技有限公司
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