CN112394011A - Coal mill coal powder fineness monitoring device and automatic adjusting method - Google Patents
Coal mill coal powder fineness monitoring device and automatic adjusting method Download PDFInfo
- Publication number
- CN112394011A CN112394011A CN202011158273.0A CN202011158273A CN112394011A CN 112394011 A CN112394011 A CN 112394011A CN 202011158273 A CN202011158273 A CN 202011158273A CN 112394011 A CN112394011 A CN 112394011A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- coal
- way valve
- output
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003245 coal Substances 0.000 title claims abstract description 68
- 238000012806 monitoring device Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 8
- 239000000843 powder Substances 0.000 title claims description 14
- 238000005070 sampling Methods 0.000 claims abstract description 37
- 239000002817 coal dust Substances 0.000 claims abstract description 6
- 238000004140 cleaning Methods 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 15
- 238000012544 monitoring process Methods 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 2
- 239000002245 particle Substances 0.000 description 3
- 238000010298 pulverizing process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/02—Investigating particle size or size distribution
- G01N15/0272—Investigating particle size or size distribution with screening; with classification by filtering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a coal mill coal dust fineness monitoring device and an automatic adjusting method, in particular to the technical field of coal mills, the coal mill coal dust fineness monitoring device comprises an input pipeline and an output pipeline which are communicated with the coal mill, a sampling pipeline and a common pipeline are communicated between the input pipeline and the output pipeline, the input ends of the sampling pipeline and the common pipeline are both communicated with the output end of the input pipeline, the output ends of the sampling pipeline and the common pipeline are both communicated with the input end of the output pipeline, the output end of the input pipeline is provided with a first three-way valve, the input end of the output pipeline is provided with a second three-way valve, a screen mesh is embedded in the sampling pipeline, and one end of the screen mesh, which faces the; the coal pulverizer comprises a coal pulverizer body, a pressure sensor, a first three-way valve, a second three-way valve, a third three-way valve, a fourth three-way valve, a fifth three-way valve, a sixth three.
Description
Technical Field
The invention relates to the technical field of coal mills, in particular to a coal powder fineness monitoring device of a coal mill and an automatic adjusting method.
Background
Coal is a brittle material and can be ground into a plurality of particles with different sizes under the action of external mechanical force, and the grindability is a physical property reflecting the difficulty of grinding coal into small particles under the action of mechanical force and is a measure for the power consumption of coal pulverization.
Whether the coal-fired power plant is a medium storage type pulverizing system or a direct-fired pulverizing system, the wind speed of primary wind entering a hearth and the fineness and uniformity of pulverized coal particles have great influence on the economy and safety of coal and the power consumption of a coal mill, so that the analysis of the fineness of the pulverized coal is very necessary.
However, coal mills in the prior art are specially and manually sampled to monitor the fineness of the pulverized coal, and then the rotational speed of a dynamic separator of the coal mill is manually adjusted to adjust the fineness of the pulverized coal, so that the sampling process is troublesome to set.
Disclosure of Invention
The invention aims to provide a coal mill coal powder fineness monitoring device and an automatic adjusting method, which have the effects of remotely measuring the coal mill coal powder fineness and remotely adjusting and controlling the coal mill coal powder fineness according to the measuring result.
The above object of the present invention is achieved by the following technical solutions:
a coal mill coal dust fineness monitoring device comprises an input pipeline and an output pipeline which are communicated with a coal mill, wherein a sampling pipeline and a common pipeline are communicated between the input pipeline and the output pipeline, the input ends of the sampling pipeline and the common pipeline are communicated with the output end of the input pipeline, the output ends of the sampling pipeline and the common pipeline are both communicated with the input end of the output pipeline, the output end of the input pipeline is provided with a first three-way valve, the input end of the output pipeline is provided with a second three-way valve, a screen mesh is embedded in the sampling pipeline, and one end of the screen mesh facing the output pipeline is provided with a pressure sensor;
the pressure sensor is electrically connected with a controller, the controller is electrically connected with a dynamic separator of the coal mill, and the controller is electrically connected with a first three-way valve and a second three-way valve.
Preferably, one side of screen cloth orientation input pipeline is provided with cleaning device, cleaning device is including rotating the motor and being fixed in the rotation brush that rotates the motor output, the brush hair and the screen cloth butt of rotating the brush, it is fixed that the rotation motor passes through support and sampling pipeline inner wall.
Preferably, the screen mesh comprises a first screen mesh and a second screen mesh, the first screen mesh has a mesh size of 12 microns, and the second screen mesh has a mesh size of 9 microns.
Preferably, the sampling pipeline is divided into a first pipeline, a second pipeline and a third pipeline, the screen and the cleaning device are both installed on the inner wall of the second pipeline, and two ends of the second pipeline are respectively connected with the first pipeline and the second pipeline through flanges.
A coal mill coal powder fineness monitoring device comprises the following steps:
s1, under the normal condition, the controller controls first three-way valve and second three-way valve to rotate and makes the input pipeline, pipeline and output pipeline communicate in proper order commonly used, and the sampling pipeline both ends are closed, when needs monitor buggy fineness, thereby the controller rotates first three-way valve and second three-way valve and can make input channel, sampling passageway and output channel intercommunication, on the buggy is blown the screen cloth through the air-blower, make it take place vibrations through cleaning device, thereby can make the buggy pass the sieve mesh.
And S2, after a period of time, the controller controls the first three-way valve and the second three-way valve to rotate so that two ends of the sampling channel are closed, and two ends of the common pipeline are opened.
S3, weighing and transmitting the weight of the pulverized coal on the screen to the controller by the pressure sensor.
And S4, controlling the rotating speed of the dynamic separator by the controller according to the weight of the coal powder, wherein the rotating speed of the dynamic separator is increased when the weight of the coal powder is too heavy in the same monitoring period.
In conclusion, the invention has the beneficial effects that:
rotate first three way valve and second three way valve earlier, thereby can make input channel and output channel and sampling channel intercommunication, blown to the screen cloth through the air-blower when the buggy on, make it shake through cleaning device, thereby can make the buggy pass the sieve mesh, too thick buggy just can be kept off on the screen cloth, after a period, the buggy that stops is weighed by pressure sensor, give the controller with data transmission, the controller is according to the rotational speed of the dynamic separator of data adjustment coal pulverizer, thereby reached the automatic mesh of monitoring and remote control buggy fineness.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the interior of the sampling pipe of FIG. 1;
fig. 3 is a schematic diagram of the present invention.
The marks in the figure are respectively 1 and an input pipeline; 2. an output pipe; 3. a sampling pipe; 31. a first conduit; 32. a second conduit; 321. a pressure sensor; 322. a first screen; 323. a second screen; 33. a third pipeline; 4. a common pipeline; 5. a first three-way valve; 6. a second three-way valve; 7. a controller; 8. a dynamic separator; 9. a cleaning device; 91. rotating the motor; 92. the brush is rotated.
Detailed Description
In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention. The present invention is described in detail below with reference to the attached drawings.
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 to 3 show a coal pulverizer coal fines fineness monitoring device, which includes an input pipeline 1 and an output pipeline 2 communicated with a coal pulverizer, a sampling pipeline 3 and a common pipeline 4 are communicated between the input pipeline 1 and the output pipeline 2, the input ends of the sampling pipeline 3 and the common pipeline 4 are both communicated with the output end of the input pipeline 1, the output ends of the sampling pipeline 3 and the common pipeline 4 are both communicated with the input end of the output pipeline 2, the output end of the input pipeline 1 is provided with a first three-way valve 5, the input end of the output pipeline 2 is provided with a second three-way valve 6, a screen mesh is embedded in the sampling pipeline 3, and one end of the screen mesh facing the output pipeline 2 is provided with a pressure sensor 321;
the pressure sensor 321 is electrically connected with a controller 7, the controller 7 is electrically connected with a dynamic separator 8 of the coal mill, and the controller 7 is electrically connected with a first three-way valve and a second three-way valve 6.
In the use, rotate first three way valve 5 and second three way valve 6 earlier, thereby can make input channel and output channel and sampling channel intercommunication, blown on the screen cloth through the air-blower when the buggy, make it shake through cleaning device 9, thereby can make the buggy pass the sieve mesh, too thick buggy just can be kept off on the screen cloth, after a period, the buggy that stops is weighed by pressure sensor 321, give controller 7 with data transmission, controller 7 is according to the rotational speed of the dynamic separator 8 of data adjustment coal pulverizer, thereby reached the purpose of automatic monitoring and remote control buggy fineness.
The screen cloth is provided with cleaning device 9 towards one side of input pipeline 1, cleaning device 9 is including rotating motor 91 and being fixed in the rotation brush 92 that rotates motor 91 output, the brush hair and the screen cloth butt of rotating brush 92, it is fixed through support and 3 inner walls of sampling pipeline to rotate motor 91, adopts so to get the structure and can avoid the buggy to pile up and block up the sieve mesh.
The screen mesh comprises a first screen mesh 322 and a second screen mesh 323, the screen mesh of the first screen mesh 322 is 12 micrometers, the screen mesh of the second screen mesh 323 is 9 micrometers, and the structure obtained in the way can specifically measure the fineness condition of the pulverized coal.
A coal mill coal powder fineness monitoring device comprises the following steps:
s1, under the normal condition, the controller 7 controls the rotation of the first three-way valve 5 and the second three-way valve 6 to make the input pipeline 1, the common pipeline 4 and the output pipeline 2 are communicated in sequence, and the two ends of the sampling pipeline 3 are closed, when the fineness of the pulverized coal needs to be monitored, the controller 7 rotates the first three-way valve 5 and the second three-way valve 6 to enable the input channel, the sampling channel and the output channel to be communicated, when the pulverized coal is blown onto the screen mesh through the air blower, the pulverized coal vibrates through the cleaning device 9, and therefore the pulverized coal can penetrate through the screen mesh.
And S2, after a period of time, the controller 7 controls the first three-way valve 5 and the second three-way valve 6 to rotate, so that two ends of the sampling channel are closed, and two ends of the common pipeline 4 are opened.
S3, the pressure sensor 321 weighs the coal dust weight on the screen and transmits the weighed coal dust weight to the controller 7.
S4, the controller 7 controls the rotating speed of the dynamic separator 8 according to the weight of the coal powder, and when the weight of the coal powder is too heavy in the same monitoring period, the rotating speed of the dynamic separator 8 is increased.
Although the present invention has been described with reference to the above preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a coal pulverizer buggy fineness monitoring devices which characterized in that: the coal pulverizer comprises an input pipeline (1) and an output pipeline (2) which are communicated with a coal pulverizer, wherein a sampling pipeline (3) and a common pipeline (4) are communicated between the input pipeline (1) and the output pipeline (2), the input ends of the sampling pipeline (3) and the common pipeline (4) are communicated with the output end of the input pipeline (1), the output ends of the sampling pipeline (3) and the common pipeline (4) are communicated with the input end of the output pipeline (2), the output end of the input pipeline (1) is provided with a first three-way valve (5), the input end of the output pipeline (2) is provided with a second three-way valve (6), a screen mesh is embedded in the sampling pipeline (3), and one end, facing the output pipeline (2), of the screen mesh is provided with a pressure sensor (321);
the coal pulverizer is characterized in that the pressure sensor (321) is electrically connected with the controller (7), the controller (7) is electrically connected with the dynamic separator (8) of the coal pulverizer, and the controller (7) is electrically connected with the first three-way valve (5) and the second three-way valve (6).
2. The coal pulverizer coal fines fineness monitoring device of claim 1, characterized in that: the utility model discloses a sampling pipeline, including screen cloth, cleaning device (9) are provided with to one side of screen cloth orientation input pipeline (1), cleaning device (9) are including rotating motor (91) and being fixed in rotation brush (92) that rotate motor (91) output, the brush hair and the screen cloth butt of rotation brush (92), it is fixed that rotation motor (91) pass through support and sampling pipeline (3) inner wall.
3. The coal pulverizer coal fines fineness monitoring device of claim 1, characterized in that: the screens comprise a first screen (322) and a second screen (323), the first screen (322) has a mesh opening of 12 microns, and the second screen (323) has a mesh opening of 9 microns.
4. The coal pulverizer coal fines fineness monitoring device of claim 2, characterized in that: sampling pipeline (3) divide into first pipeline (31) and second pipeline (32) and third pipeline (33), screen cloth and cleaning device (9) are all installed in second pipeline (32) inner wall, second pipeline (32) both ends respectively with first pipeline (31) and second pipeline (32) flange joint.
5. The method for automatically adjusting the coal dust fineness of the coal mill as claimed in claim 4, wherein the method comprises the following steps:
s1, under the normal condition, first three way valve (5) of controller (7) control and second three way valve (6) rotate and make input pipeline (1), pipeline (4) and output pipeline (2) communicate in proper order commonly used, and sampling pipeline (3) both ends are closed, when needs monitoring buggy fineness, thereby controller (7) rotate first three way valve (5) and second three way valve (6) and can make input channel, sampling channel and output channel intercommunication, be blown to the screen cloth on through the air-blower when buggy, make it shake through cleaning device (9), thereby can make the buggy pass the sieve mesh.
And S2, after a period of time, the controller (7) controls the first three-way valve (5) and the second three-way valve (6) to rotate so that two ends of the sampling channel are closed, and two ends of the common pipeline (4) are opened.
S3, weighing and transmitting the weight of the pulverized coal on the screen to the controller (7) by the pressure sensor (321).
S4, the controller (7) controls the rotating speed of the dynamic separator (8) according to the weight of the coal powder, and when the weight of the coal powder is too heavy in the same monitoring period, the rotating speed of the dynamic separator (8) is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158273.0A CN112394011A (en) | 2020-10-26 | 2020-10-26 | Coal mill coal powder fineness monitoring device and automatic adjusting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011158273.0A CN112394011A (en) | 2020-10-26 | 2020-10-26 | Coal mill coal powder fineness monitoring device and automatic adjusting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112394011A true CN112394011A (en) | 2021-02-23 |
Family
ID=74597028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011158273.0A Pending CN112394011A (en) | 2020-10-26 | 2020-10-26 | Coal mill coal powder fineness monitoring device and automatic adjusting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112394011A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959793A (en) * | 2021-11-17 | 2022-01-21 | 西安热工研究院有限公司 | Pulverized coal fineness rapid sampling and measuring system for primary air pipe of power plant |
| CN114146783A (en) * | 2021-12-08 | 2022-03-08 | 南京庆瑞水泥有限公司 | System and method for measuring abrasive particle size of cement raw powder of ball mill |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080547A (en) * | 2011-11-02 | 2014-10-01 | 陶氏环球技术有限责任公司 | Vibratory screener cleaning system |
| CN104122037A (en) * | 2013-04-28 | 2014-10-29 | 宝山钢铁股份有限公司 | Method for detecting internal leakage of gas valve of industrial furnace online by utilizing furnace temperature change |
| CN203929575U (en) * | 2014-05-04 | 2014-11-05 | 中煤科工集团武汉设计研究院有限公司 | Coal powder size distribution apparatus for automatically measuring |
| CN107356457A (en) * | 2017-09-19 | 2017-11-17 | 深圳市正奇环境科技有限公司 | A kind of monitoring water quality on line pre-processes sampling system |
| CN107782644A (en) * | 2017-11-28 | 2018-03-09 | 保定北能电力科技有限责任公司 | A kind of power plant soot particle diameter distribution on-line measuring device and its detection method |
| CN107991143A (en) * | 2017-12-09 | 2018-05-04 | 刘梦 | A kind of pulverized coal particle detects sampler |
| CN209108894U (en) * | 2018-10-16 | 2019-07-16 | 国投北部湾发电有限公司 | A kind of mechanism for preventing generator hydrogen purity from reducing |
| CN211477819U (en) * | 2020-07-28 | 2020-09-11 | 中国石油化工股份有限公司 | Crude oil water content measuring device |
-
2020
- 2020-10-26 CN CN202011158273.0A patent/CN112394011A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104080547A (en) * | 2011-11-02 | 2014-10-01 | 陶氏环球技术有限责任公司 | Vibratory screener cleaning system |
| CN104122037A (en) * | 2013-04-28 | 2014-10-29 | 宝山钢铁股份有限公司 | Method for detecting internal leakage of gas valve of industrial furnace online by utilizing furnace temperature change |
| CN203929575U (en) * | 2014-05-04 | 2014-11-05 | 中煤科工集团武汉设计研究院有限公司 | Coal powder size distribution apparatus for automatically measuring |
| CN107356457A (en) * | 2017-09-19 | 2017-11-17 | 深圳市正奇环境科技有限公司 | A kind of monitoring water quality on line pre-processes sampling system |
| CN107782644A (en) * | 2017-11-28 | 2018-03-09 | 保定北能电力科技有限责任公司 | A kind of power plant soot particle diameter distribution on-line measuring device and its detection method |
| CN107991143A (en) * | 2017-12-09 | 2018-05-04 | 刘梦 | A kind of pulverized coal particle detects sampler |
| CN209108894U (en) * | 2018-10-16 | 2019-07-16 | 国投北部湾发电有限公司 | A kind of mechanism for preventing generator hydrogen purity from reducing |
| CN211477819U (en) * | 2020-07-28 | 2020-09-11 | 中国石油化工股份有限公司 | Crude oil water content measuring device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113959793A (en) * | 2021-11-17 | 2022-01-21 | 西安热工研究院有限公司 | Pulverized coal fineness rapid sampling and measuring system for primary air pipe of power plant |
| CN114146783A (en) * | 2021-12-08 | 2022-03-08 | 南京庆瑞水泥有限公司 | System and method for measuring abrasive particle size of cement raw powder of ball mill |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112394011A (en) | Coal mill coal powder fineness monitoring device and automatic adjusting method | |
| CN107262261B (en) | A kind of coal pulverizer air quantity control method adapting to fired power generating unit Ultra-low load operation | |
| AU2009257709B2 (en) | Electronically controlled journal loading system | |
| CN105869547B (en) | Rotary grate haplotype Anti-wind advertising plate and its wind resistance method | |
| CN103328103A (en) | System and method for monitoring operational characteristics of pulverizers | |
| CN113385294B (en) | Energy-saving control method for reducing coal grinding unit consumption of medium-speed coal mill by variable-speed adjustment of rare earth motor | |
| CN111921633A (en) | Raymond mill with adjustable milling pressure | |
| CN101936539A (en) | Tensile powder feeder | |
| CN111879568A (en) | Full-automatic pulverized coal online sampling device and sampling method thereof | |
| CN107200186A (en) | A kind of chemical fertilizer production continuous blanking device | |
| CN2837815Y (en) | The full section isokinetic sample of pulverized coal of a kind of pulverized coal channel device | |
| JP2012045496A (en) | Monitoring apparatus and monitoring method of crushing roller of vertical mill | |
| CN110173291A (en) | The regulating system and method for underground coal mine external hanging type blinds air regulator and the air regulator | |
| CN110296431A (en) | A kind of fineness of pulverized coal automatic regulating system and method based on static separation device | |
| CN212284410U (en) | Buggy concentration levelling device | |
| CN110206576A (en) | Regulating system, the method for a kind of underground coal mine intelligence air regulator and the intelligence air regulator | |
| CN214700783U (en) | Air volume adjusting structure of low-nitrogen combustion boiler | |
| CN212040863U (en) | Jet mill | |
| JP2001017880A (en) | Roller type grinding apparatus | |
| CN201072354Y (en) | Device for measuring material position and mill interior temperature of tube ball mill | |
| CN203711128U (en) | Automatic ball mill control system | |
| CN206337294U (en) | A kind of pelletizing disk control system | |
| CN207667802U (en) | A kind of separator for coal mill outlet coal powder density or fineness on-line tuning device | |
| CN206161676U (en) | Calibrating installation of FP series current meter | |
| CN111686918A (en) | Coal powder concentration leveling device and leveling method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |