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Operation method of a material level alarm and control device

A technology of control device and operation method, which is applied in the directions of combustion method, combustion control, and adjustment of fuel supply, etc., which can solve problems such as equipment wear, false alarm of material level, and reduced service life, so as to improve stability and false alarm of material level The effect of improving and improving safety

Active Publication Date: 2017-07-21
STATE GRID CORP OF CHINA +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide a new type of material level alarm and control device and its operation method to solve various failures of current coal-fired boilers caused by excessive material level. At present, domestic and foreign use and sales Due to the serious wear and tear of the equipment caused by the direct contact with the material, the material level alarm device reduces the service life. In addition, the material is easy to stick to the surface of the material level measurement sensor, causing technical problems such as false alarm of the material level.

Method used

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  • Operation method of a material level alarm and control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Step 1. Device self-inspection

[0045] Keep the manual sliding door 2 open, open the sampling shut-off valve I6, open the sampling shut-off valve II8, turn on the power, the pressure transmitter 9 detects the pressure value of the hopper 1, and sends the pressure signal value to the alarm device 10,

[0046] The pressure signal value received by the alarm device 10 is equal to 0, and the alarm device 10 sends out an acousto-optic red alarm, indicating that the equipment is faulty, and the maintenance personnel overhaul it.

Embodiment 2

[0048] Step 1. Device self-inspection

[0049] Keep the manual sliding door 2 open, open the sampling shut-off valve I6, open the sampling shut-off valve II8, turn on the power, the pressure transmitter 9 detects the pressure value of the hopper 1, and sends the pressure signal value to the alarm device 10,

[0050] When the pressure signal value received by the alarm device 10 is less than 0, the alarm device 10 sends the received pressure signal value to the signal controller 11, and the signal controller 11 sends a closing signal to the pneumatic dome valve 5, and the valve of the pneumatic dome valve 5 Close, the device is normal, and the self-test of the device is over;

[0051] Step 2. Feeding

[0052] After the self-test of the equipment is normal, keep the manual sliding door 2 open, the sampling shut-off valve Ⅰ6 open, the sampling shut-off valve Ⅱ8 open, the valve of the pneumatic dome valve 5 closed, feed from the feed port of the hopper 1, and the pressure transmi...

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Abstract

The invention relates to a novel material level alarm and control device and an operation method thereof, which belong to the technical field of environmental protection equipment. A new type of material level alarm and control device includes a hopper, a manual sliding door, a square and circular reducing pipe joint, a flexible joint, a pneumatic dome valve, a sampling stop valve I, a sampling tube, a sampling shut-off valve II, and a pressure transmitter. device, alarm device, and signal controller; its operation method includes four steps: equipment self-inspection, feeding, discharging and warning, discharging and alarming. On the one hand, the present invention avoids material wear on the pressure transmitter and improves the service life of the equipment; The signal from the controller is used to control the opening and closing of the pneumatic dome valve, which ensures that the material level will not be too high and improves the stability of the equipment.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to a novel material level alarm and control device and an operation method thereof. Background technique [0002] At present, raw coal is mainly used as fuel for power generation in my country, and most power plant boilers use pulverized coal to feed the boiler. Coal-fired boilers generally have the following problems: 1. The ash is solidified on the ash hopper, resulting in ineffective ash discharge from the ash hopper; 2. The material level of the ash hopper is too high, directly contacting the cathode line, so that the electric field cannot be put into operation, and the dust removal effect is lost; 3. Due to the loss of function of the front-stage electric field, the follow-up electric field plays the role of the front-stage electric field, and the material level of the ash hopper in the back-stage electric field rises rapidly. At this tim...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23K3/00F23N1/00
Inventor 王鑫闫淑梅孙成勋朱宝余孙冬冬李光日赖云飞曲艺李红彦徐华雷刘森
Owner STATE GRID CORP OF CHINA