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Anti-explosion detection system and method of coal mill

An explosion-proof detection and coal mill technology, applied in measuring devices, grain processing, instruments, etc., can solve problems such as inaccurate detection of CO content, and achieve the effect of protecting safe and reliable operation and accurate detection

Active Publication Date: 2017-07-21
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem of inaccurate detection of CO content caused by coal powder accumulation detection probes in the detection of CO content in coal mills in the prior art, the present invention provides an explosion-proof detection system and detection method for coal pulverizers
It can prevent the problem of inaccurate probe detection caused by the accumulation of coal powder, more accurately detect the CO content in the coal mill, and prevent the spontaneous combustion and explosion of the coal mill

Method used

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  • Anti-explosion detection system and method of coal mill

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Combine figure 1 , 2 , 3, 4 and 5, an explosion-proof detection system for coal mills of this embodiment, including an inlet hot air pipe 4, a pulverized coal outlet pipe 1 and a raw coal inlet 2 are all located on the coal mill, and also includes an inert gas pipe 8, hot air Temperature sensor 62, sampling pipe 5 and raw coal inlet pressure sensor 11, hot air temperature sensor 62 is provided on the inlet hot air pipe 4, the inert gas pipe 8 is connected to the inlet hot air pipe 4, and the coal outlet pipe 1 is provided with a sampling pipe 5 The raw coal inlet 2 is provided with a raw coal inlet pressure sensor 11, and the hot air temperature sensor 62, the sampling pipe 5 and the raw coal inlet pressure sensor 11 are all connected to the control center.

[0052] The hot air temperature sensor 62 detects the temperature on the inlet hot air pipe 4, the inert gas pipe 8 is used to adjust the internal pressure of the coal mill and the CO content, the sampling pipe 5 on the...

Embodiment 2

[0055] The explosion-proof detection system for a coal mill of this embodiment is further improved on the basis of Embodiment 1. The coal mill further includes a coal mill system 10 and a coal mill main body 3, and the coal mill system 10 is located in the coal mill main body 3. The raw coal inlet 2 is located above the main body 3 of the coal mill, and is connected to the coal grinding system 10 through the raw coal inlet pipe 21. The pressure sampling pipe 22 passes through the sidewall of the raw coal inlet pipe 21 and enters the raw coal inlet pipe 21. The pressure sampling pipe 22. One end of the raw coal inlet pipe 21 is provided with a raw coal inlet pressure sensor 11, and one end of the pulverized coal outlet pipe 1 is provided with a pressure temperature sensor 51. In order to prevent pulverized coal leakage, the coal mill uses a negative pressure system , The pressure sensors are respectively arranged at the entrance and exit of the coal mill, and the results achieved...

Embodiment 3

[0060] The explosion-proof detection system for coal mills of this embodiment is further improved on the basis of Embodiment 1 or 2. The inlet of the hot air pipe 4 is provided with a three-way joint. The three-way joint includes a three-way port 71 and a three-way joint. Port two 72 and three-way port three 73, three-way port one 71 is connected to the inlet hot air pipe 4, three-way port two 72 is connected to the air preheater 6, and three-way port three 73 is connected to the inert gas pipe 8.

[0061] The sampling pipe 5 penetrates the side wall of the pulverized coal outlet pipe 1 and penetrates into the pulverized coal outlet pipe 1. One end of the sampling pipe 5 located in the pulverized coal outlet pipe 1 is provided with a pressure temperature sensor 51, a temperature pressure sensor 51 and a control center connection.

[0062] The temperature and pressure sensor 51 collects the temperature and pressure in the pulverized coal outlet pipe 1, which is convenient for the co...

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Abstract

The invention discloses an anti-explosion detection system and method of a coal mill, and belongs to the technical field of coal mills. The anti-explosion detection system comprises an inlet hot air pipe, a coal dust outlet pipeline and a raw coal inlet which are all located on the coal mill. The anti-explosion detection system further comprises an inert gas pipeline, a hot air temperature sensor, a sampling pipe and a raw coal inlet pressure sensor; the inlet hot air pipe is provided with the hot air temperature sensor; the inert gas pipeline communicates with the inlet hot air pipe; the coal dust output pipeline is provided with the sampling pipe; the raw coal inlet is provided with the raw coal inlet pressure sensor; and the hot air temperature sensor, the sampling pipe and the raw coal inlet pressure sensor are all connected with a control center. Aiming at the problem that in CO content detection of a coal mill in the prior art, the CO content detection is inaccurate due to the fact that coal dust is stacked on a detection probe, through the anti-explosion detection system and method of the coal mill, the problem that the CO content detection is inaccurate due to stacking of the coal dust can be solved, the content of CO in the coal mill can be detected more accurately, and spontaneous combustion and explosion of the coal mill are prevented.

Description

Technical field [0001] The invention relates to the technical field of coal pulverizers, in particular to an explosion-proof detection system for coal pulverizers and a detection method thereof. Background technique [0002] The coal grinding process is a process in which coal is broken and its surface area is increasing. Coal is ground into pulverized coal in a coal mill, mainly through three methods: crushing, crushing and grinding. In order to improve the combustion efficiency of pulverized coal, it is always desirable to grind the pulverized coal into finer particles. The more detailed the surface area of ​​the pulverized coal in contact with air, the greater the oxidation reaction with oxygen in the air, which will cause the container to accumulate. When the temperature of pulverized coal increases, the spontaneous combustion of pulverized coal is more likely to cause an explosion. The coal mill is prone to spontaneous combustion and explosion during the working process, m...

Claims

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Application Information

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IPC IPC(8): B02C23/04G01D21/02
CPCB02C23/04G01D21/02
Inventor 冯旭刚梁聚齐章家岩
Owner ANHUI UNIVERSITY OF TECHNOLOGY