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Fuel screening device for power plant

A technology for screening devices and power plants, applied in fuel supply, measurement devices, solid fuel pretreatment, etc., can solve problems such as inconvenience in use, single functionality, and inability to screen pulverized coal, so as to improve accuracy, ensure uniformity, The effect of ensuring accuracy

Inactive Publication Date: 2019-10-01
大唐东营发电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most of the screening devices currently on the market have relatively simple functions and are very inconvenient to use. When the traditional screening devices screen coal powder, they can only screen out larger particles in the coal powder to ensure the quality of the coal powder. Particle uniformity, because the pulverized coal also contains moisture, if the moisture is too large, it will affect the thermal stability and heat conduction during combustion, but the traditional screening device cannot screen the pulverized coal containing moisture, which will affect the power plant power generation efficiency

Method used

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  • Fuel screening device for power plant
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Effect test

Embodiment 1

[0031] see Figure 1-7 , the present invention provides a technical solution: a power plant fuel screening device, including a box body 1, a feed hopper 5 is fixedly installed on the top of the box body 1, and a PLC controller is fixedly connected to one side of the outer wall of the box body 1 6. A detection box 2 is fixedly installed on one end of the outer wall of the box body 1, and an inner cylinder 20 is movable installed inside the detection box 2, and a load cell 23 is fixedly installed at the four corners of the bottom end of the inner tube 20, and the load cell 23 It is fixedly connected with the box body 1. A contact microwave moisture meter 21 is fixedly installed on one side of the outer wall of the detection box 2. The detection probe of the contact type microwave moisture meter 21 is fixedly installed on the inner wall surface of the inner cylinder 20. The box body 1 A bucket 17 to be detected is fixedly installed at the middle end of the inner wall, and a colle...

Embodiment 2

[0039] see Figure 1-7 , the present invention provides a technical solution: a power plant fuel screening device, including a box body 1, a feed hopper 5 is fixedly installed on the top of the box body 1, and a PLC controller is fixedly connected to one side of the outer wall of the box body 1 6. A detection box 2 is fixedly installed on one end of the outer wall of the box body 1, and an inner cylinder 20 is movable installed inside the detection box 2, and a load cell 23 is fixedly installed at the four corners of the bottom end of the inner tube 20, and the load cell 23 It is fixedly connected with the box body 1. A contact microwave moisture meter 21 is fixedly installed on one side of the outer wall of the detection box 2. The detection probe of the contact type microwave moisture meter 21 is fixedly installed on the inner wall surface of the inner cylinder 20. The box body 1 A bucket 17 to be detected is fixedly installed at the middle end of the inner wall, and a colle...

Embodiment 3

[0041] see figure 1 , figure 2 and Figure 4, the present invention provides a technical solution: a fuel screening device for a power plant, a blowing ring pipe 13 is fixedly installed on the top inside of the box body 1, and a nozzle 14 is fixedly connected to the bottom end of the blowing ring pipe 13, and the blowing ring The top of the pipe 13 is fixedly connected with the air supply pipe 12, and the end of the air supply pipe 12 away from the blowing ring pipe 13 runs through the box body 1 and is fixedly connected with the air outlet end of the air compressor, and one side of the outer wall of the collecting plate 24 is fixedly connected There is an unqualified discharge pipe 8. The other end of the unqualified discharge pipe 8 runs through the box body 1 and extends to the outside of the box body 1. The middle end of the unqualified discharge pipe 8 is fixedly connected to the first fan 9, and the second A fan 9 is fixedly installed on one side of the bottom end of ...

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Abstract

The invention discloses a fuel screening device for a power plant. The fuel screening device comprises a box body, wherein a feeding hopper is fixedly arranged at the top end of the box body; a PLC controller is fixedly connected to one side of the outer wall of the box body; a detecting box is fixedly arranged at one end of the outer wall of the box body and is internally and movably provided with an inner cylinder; weighing sensors are fixedly arranged at four corners of the bottom end of the inner cylinder and are fixedly connected with the box body; a contacted microwave moisture instrument is fixedly arranged on one side of the outer wall of the detecting box. The detecting box is arranged for screening according to the moisture content of pulverized coal; compared with a traditionalscreening device, the fuel screening device can further improve the screening effect and avoid the influence of excess moisture content of the pulverized coal on the power generating efficiency; a first screening mechanism and a second screening mechanism are arranged for ensuring the particle uniformity of the pulverized coal and can realize separate screening, so that the blocking condition dueto concentrated screening is avoided, the screening efficiency and the screening effect are improved, and further pulverized coal particles can be screened.

Description

technical field [0001] The invention relates to the technical field of power plant fuel, in particular to a power plant fuel screening device. Background technique [0002] Fuel for power generation generally refers to the fuel needed for power generation in thermal power plants. The power generation fuels of thermal power plants are roughly divided into solid fuels, liquid fuels, and gaseous fuels according to their forms. The solid fuel is mainly coal. Coal consists of carbon, ash, moisture and volatiles. Liquid fuel is mainly heavy oil, that is, the oil left after the refinery extracts gasoline, kerosene, diesel, etc. from petroleum. Heavy oil is a high-quality power generation fuel with very little ash and moisture. The gaseous fuel is mainly natural gas, coke oven gas, blast furnace gas, etc., and the solid fuel is mainly coal. Coal can be roughly divided into anthracite, bituminous coal, lignite and oil shale according to the degree of carbonization. Bituminous c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F23K1/00B07B1/28B07B1/46B08B9/093G01N22/04G01G17/04B01F7/18
CPCF23K1/00B07B1/28B07B1/46B08B9/093G01N22/04G01G17/04B07B2201/04F23K2201/30B01F27/90
Inventor 李玮田润平周恩浩张忠兴李录新张伟
Owner 大唐东营发电有限公司
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