CN104749074B - A kind of on-line continuous fineness of pulverized coal analyzer and control method - Google Patents
A kind of on-line continuous fineness of pulverized coal analyzer and control method Download PDFInfo
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- CN104749074B CN104749074B CN201510168456.3A CN201510168456A CN104749074B CN 104749074 B CN104749074 B CN 104749074B CN 201510168456 A CN201510168456 A CN 201510168456A CN 104749074 B CN104749074 B CN 104749074B
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- magnetic valve
- sieve
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- 239000003245 coal Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005303 weighing Methods 0.000 claims abstract description 69
- 239000002817 coal dust Substances 0.000 claims abstract description 51
- 239000000843 powder Substances 0.000 claims abstract description 14
- 238000007873 sieving Methods 0.000 claims abstract description 12
- 238000012216 screening Methods 0.000 claims abstract description 9
- 238000009434 installation Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 claims 1
- 235000018734 Sambucus australis Nutrition 0.000 description 1
- 244000180577 Sambucus australis Species 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- OGFXBIXJCWAUCH-UHFFFAOYSA-N meso-secoisolariciresinol Natural products C1=2C=C(O)C(OC)=CC=2CC(CO)C(CO)C1C1=CC=C(O)C(OC)=C1 OGFXBIXJCWAUCH-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Abstract
The present invention relates to a kind of on-line continuous fineness of pulverized coal analyzer and control method, the analyzer includes coal dust sampler, sample jar, sample jar magnetic valve, 200 micron nominals sieve, 90 micron nominals sieve, standard screen bottom and the vibrating sieving machine installed from top to bottom by suction tube cell, also include the weighing pot and Weighing system by going out powder inlet pipe UNICOM, control main frame is connected with coal dust sampler, vibrating sieving machine, Weighing system and each magnetic valve respectively.The control method of the analyzer includes：Sample jar is sampled；Screening system is fed；Vibrating sieving machine sub-sieve；Coal dust is weighed in each specification sieve nest；Control main frame calculates fineness of pulverized coal value and transmitted to boiler of power plant control system.On-line period, screening, weighing are controlled, above-mentioned flow are completed by power source of compressed air by the present invention by control main frame, and cost is low, fineness of pulverized coal is determined and is consistent with national standard.
Description
Technical field
The invention belongs to the fineness determination techniques field of ature of coal, particularly a kind of on-line continuous fineness of pulverized coal analyzer and control
Method processed.
Background technology
Coal-burning power plant either middle storage formula or unit pulverized-coal system, fineness of pulverized coal to the economic security of boiler combustion and
The power consumption of coal pulverizer has considerable influence, therefore the measure to online fineness of pulverized coal is necessary.
Laser type, the online Particle Size Analyzer of diffraction light formula are had at present, but have a problem that, what its principle was measured is not
The number of one-size, then goes out varigrained coal dust percentage according to the density conversion of coal dust, and such a method has one
Individual problem, the same varigrained coal dust of coal, its density is different, and ature of coal is poorer, and ash content is higher, and its difference is more obvious.
Thus the in-line analyzer of this technology can not well be applied in thermal power plant.
The content of the invention
The purpose of the present invention is in view of the shortcomings of the prior art, and to propose a kind of on-line continuous fineness of pulverized coal analyzer and control
Method processed.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of on-line continuous fineness of pulverized coal analyzer, the analyzer includes being arranged on left side by suction tube cell from upper
The coal dust sampler of lower installation, sample jar, sample jar magnetic valve, 200 micron nominals sieve, 90 micron nominals sieve, standard screen bottom and
Vibrating sieving machine, 200 micron nominals sieve, 90 micron nominals sieve and standard screen bottom are respectively by going out powder inlet pipe and being arranged on the weighing on right side
Tank is connected, and the bottom of weighing pot is Weighing system, and the top of weighing pot is provided with arranging row's tube cell of tube cell magnetic valve, control
Main frame is connected with coal dust sampler, vibrating sieving machine, Weighing system and each magnetic valve respectively.
Moreover, being mounted with compressed-air power source in the coal dust sampler.
Moreover, being each provided with magnetic valve in the 200 micron nominal sieve, 90 micron nominals sieve and standard screen bottom.
A kind of control method of on-line continuous fineness of pulverized coal analyzer, method and step is as follows：
(1) when starting working, compressed-air power source in coal dust sampler is opened in control main frame control, is made in suction tube cell
Coal dust be inhaled under negative pressure in sample jar；
(2) control main frame control open sample jar magnetic valve, by a certain amount of coal dust in coal dust sampler compressed air
Enter in the presence of power source sieved by 200 micron nominals, 90 micron nominals sieve, standard screen bottom and vibrating screen mechanism into screening system
The magnetic valve of suction tube cell is opened in system, then control main frame control, makes the coal dust of remaining in sample jar under negative pressure along suction tube cell
Reversely it is sucked away；
(3) control main frame control starts vibrating sieving machine, reaches and stops after the stipulated time；
(4) magnetic valve that 200 micron nominals sieve connecting line, the work in compressed-air power source are opened in control main frame control
Sucked with the lower above coal dust that will sieve along powder inlet pipe is gone out in the weighing pot of Weighing system, Weighing system is weighed, and is sent data to
Control main frame, then opens row's tube cell magnetic valve on weighing pot top, by coal dust under the suction function in compressed-air power source
Siphoned away from weighing pot along row's tube cell；
(5) magnetic valve that 90 micron nominals sieve connecting line, the work in compressed-air power source are opened in control main frame control
Sucked with the lower above coal dust that will sieve along powder inlet pipe is gone out in the weighing pot of Weighing system, Weighing system is weighed, and is sent data to
Control main frame, then opens row's tube cell magnetic valve on weighing pot top, by coal dust under the suction function in compressed-air power source
Siphoned away from weighing pot along row's tube cell；
(6) magnetic valve of standard screen bottom connecting line is opened in control main frame control, in the presence of compressed-air power source
Upper coal dust will be sieved to suck in the weighing pot of Weighing system along powder inlet pipe is gone out, Weighing system is weighed, and sends data to control
Main frame, then opens row's tube cell magnetic valve on weighing pot top, by coal dust from title under the suction function in compressed-air power source
Siphoned away in measuring tank along row's tube cell；
(7) 3 data that control main frame is transmitted according to above-mentioned Weighing system, calculate fineness of pulverized coal value, then pass immediately
Boiler of power plant control system is transported to, boiler operatiopn is instructed.
Advantages and positive effects of the present invention are：
1st, the present invention integrates mature coal dust on-line period technology and existing laboratory with control main frame control technology
Fineness of pulverized coal determination techniques, on-line period, screening, weighing are controlled by control main frame, completed by power source of compressed air
Above-mentioned flow, cost is low, fineness of pulverized coal is determined and is consistent with national standard.
2nd, the sample jar of sampling system of the invention be above a back taper, base opening one can be by control main frame control
Magnetic valve, opens solenoid valve can flow into coal dust in tank the screening machine of bottom, and the time quantum of unlatching can determine the big of coal dust amount
General weight.
3rd, the switch and sieving time of screening system of the invention are by control main frame control.Coal dust is by controlling in screening system
Host computer control opens solenoid valve, in the presence of compressed air is power source, is sucked into the weighing pot of Weighing system.
4th, Weighing system of the invention is weighed by the control of control main frame system to inhalation (inhalatio), then by control main frame control
Opens solenoid valve；
5th, in the present invention in the presence of compressed air is power source, by the coal dust after the completion of having weighed in Weighing system
Discharge system, control main frame sieves the corresponding magnetic valve of sequential control and compression sky at bottom according to 200 tm screens, 90 tm screens, bottom
Gas system, repeats above-mentioned 4-5 process.
6th, control main frame program of the present invention calculates fineness of pulverized coal according to weighing data, result of calculation is uploaded to
Boiler implosion room.
7th, the need for control main frame programme-control of the present invention is according to boiler operatiopn and pulverized coal preparation system, it can set different online
Interval time.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Embodiment
Present invention implementation is further described below in conjunction with accompanying drawing, following examples are descriptive, is not to limit
Property, it is impossible to protection scope of the present invention is limited with this.
A kind of on-line continuous fineness of pulverized coal analyzer, as shown in figure 1, the analyzer includes being arranged on left side by suction tube cell
Coal dust sampler, sample jar, sample jar magnetic valve, 200 micron nominals for starting to install from top to bottom are sieved, 90 micron nominals are sieved,
Standard screen bottom and vibrating sieving machine, 200 micron nominals sieve, 90 micron nominals sieve and standard screen bottom are respectively by going out powder inlet pipe with being arranged on
The weighing pot connection on right side, the bottom of weighing pot is Weighing system, and the top of weighing pot is provided with arranging the row of tube cell magnetic valve
Tube cell, control main frame is connected with coal dust sampler, vibrating sieving machine, Weighing system and each magnetic valve respectively, SECO each several part work
Make.
A kind of control method of on-line continuous fineness of pulverized coal analyzer, its control method is as follows：
(1) when starting working, compressed-air power source in coal dust sampler is opened in control main frame control, is made in suction tube cell
Coal dust be inhaled under negative pressure in sample jar；
(2) control main frame control open sample jar magnetic valve, by a certain amount of coal dust in coal dust sampler compressed air
Enter in the presence of power source sieved by 200 micron nominals, 90 micron nominals sieve, standard screen bottom and vibrating screen mechanism into screening system
The magnetic valve of suction tube cell is opened in system, then control main frame control, makes the coal dust of remaining in sample jar under negative pressure along suction tube cell
Reversely it is sucked away；
(3) control main frame control starts vibrating sieving machine, reaches and stops after the stipulated time；
(4) magnetic valve that 200 micron nominals sieve connecting line, the work in compressed-air power source are opened in control main frame control
Sucked with the lower above coal dust that will sieve along powder inlet pipe is gone out in the weighing pot of Weighing system, Weighing system is weighed, and is sent data to
Control main frame, then opens row's tube cell magnetic valve on weighing pot top, by coal dust under the suction function in compressed-air power source
Siphoned away from weighing pot along row's tube cell；
(5) magnetic valve that 90 micron nominals sieve connecting line, the work in compressed-air power source are opened in control main frame control
Sucked with the lower above coal dust that will sieve along powder inlet pipe is gone out in the weighing pot of Weighing system, Weighing system is weighed, and is sent data to
Control main frame, then opens row's tube cell magnetic valve on weighing pot top, by coal dust under the suction function in compressed-air power source
Siphoned away from weighing pot along row's tube cell；
(6) magnetic valve of standard screen bottom connecting line is opened in control main frame control, in the presence of compressed-air power source
Upper coal dust will be sieved to suck in the weighing pot of Weighing system along powder inlet pipe is gone out, Weighing system is weighed, and sends data to control
Main frame, then opens row's tube cell magnetic valve on weighing pot top, by coal dust from title under the suction function in compressed-air power source
Siphoned away in measuring tank along row's tube cell；
(7) 3 data that control main frame is transmitted according to above-mentioned Weighing system, calculate fineness of pulverized coal value, then pass immediately
Boiler of power plant control system is transported to, boiler operatiopn is instructed.
Claims (4)
1. a kind of on-line continuous fineness of pulverized coal analyzer, the analyzer includes being arranged on left side by suction tube cell from top to bottom
The coal dust sampler of installation, sample jar, sample jar magnetic valve, 200 micron nominals sieve, 90 micron nominals sieve, standard screen bottom and shake
Screen(ing) machine, it is characterised in that：200 micron nominals sieve, 90 micron nominals sieve and standard screen bottom are respectively by going out powder inlet pipe with being arranged on
The weighing pot connection on right side, the bottom of weighing pot is Weighing system, and the top of weighing pot is provided with arranging the row of tube cell magnetic valve
Tube cell, control main frame is connected with coal dust sampler, vibrating sieving machine, Weighing system and each magnetic valve respectively.
2. on-line continuous fineness of pulverized coal analyzer according to claim 1, it is characterised in that：Pacify in the coal dust sampler
It is equipped with compressed-air power source.
3. on-line continuous fineness of pulverized coal analyzer according to claim 1, it is characterised in that：The 200 micron nominal sieve,
Magnetic valve is each provided with 90 micron nominals sieve and standard screen bottom.
4. a kind of control method of on-line continuous fineness of pulverized coal analyzer, it is characterised in that：Method and step is as follows：
(1) when starting working, compressed-air power source in coal dust sampler is opened in control main frame control, makes the coal in suction tube cell
Powder is inhaled into sample jar under negative pressure；
(2) control main frame control open sample jar magnetic valve, by a certain amount of coal dust in coal dust sampler compressed-air power
Enter in the presence of source sieved by 200 micron nominals, 90 micron nominals sieve, standard screen bottom and vibrating screen mechanism into screening system, so
The magnetic valve of suction tube cell is opened in control main frame control afterwards, and making the coal dust of remaining in sample jar, edge sucks tube cell reversely quilt under negative pressure
Siphon away；
(3) control main frame control starts vibrating sieving machine, reaches and stops after the stipulated time；
(4) magnetic valve that 200 micron nominals sieve connecting line is opened in control main frame control, in the presence of compressed-air power source
Upper coal dust will be sieved to suck in the weighing pot of Weighing system along powder inlet pipe is gone out, Weighing system is weighed, and sends data to control
Main frame, then opens row's tube cell magnetic valve on weighing pot top, by coal dust from title under the suction function in compressed-air power source
Siphoned away in measuring tank along row's tube cell；
(5) magnetic valve that 90 micron nominals sieve connecting line is opened in control main frame control, in the presence of compressed-air power source
Upper coal dust will be sieved to suck in the weighing pot of Weighing system along powder inlet pipe is gone out, Weighing system is weighed, and sends data to control
Main frame, then opens row's tube cell magnetic valve on weighing pot top, by coal dust from title under the suction function in compressed-air power source
Siphoned away in measuring tank along row's tube cell；
(6) magnetic valve of standard screen bottom connecting line is opened in control main frame control, will sieve in the presence of compressed-air power source
Upper coal dust is sucked in the weighing pot of Weighing system along powder inlet pipe is gone out, and Weighing system is weighed, and sends data to control main frame,
Then row's tube cell magnetic valve on weighing pot top is opened, under the suction function in compressed-air power source by coal dust from weighing pot
Siphoned away along row's tube cell；
(7) 3 data that control main frame is transmitted according to above-mentioned Weighing system, calculate fineness of pulverized coal value, and then instantaneous transmission is extremely
Boiler of power plant control system, instructs boiler operatiopn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510168456.3A CN104749074B (en) | 2015-04-10 | 2015-04-10 | A kind of on-line continuous fineness of pulverized coal analyzer and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510168456.3A CN104749074B (en) | 2015-04-10 | 2015-04-10 | A kind of on-line continuous fineness of pulverized coal analyzer and control method |
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| Publication Number | Publication Date |
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| CN104749074A CN104749074A (en) | 2015-07-01 |
| CN104749074B true CN104749074B (en) | 2017-10-24 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109060615A (en) * | 2018-09-04 | 2018-12-21 | 四川重盟电力设备制造有限公司 | As-fired coal material partial size on-line analysis system |
| CN111272605A (en) * | 2020-04-09 | 2020-06-12 | 国网河北省电力有限公司电力科学研究院 | Drum-type pulverized coal fineness automatic measurement test device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153906A (en) * | 1996-01-03 | 1997-07-09 | 山东省电力学校 | Fast automatic duff fineness detector |
| US6581780B1 (en) * | 2001-01-16 | 2003-06-24 | Ai Enterprises, Inc. | Automatic gradation unit |
| CN103076252A (en) * | 2013-01-05 | 2013-05-01 | 周永乾 | Integrated detector for slurry viscosity and rock debris granularity |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0394139A (en) * | 1989-04-28 | 1991-04-18 | Kawasaki Heavy Ind Ltd | Automatic measuring device for powder particle size |
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2015
- 2015-04-10 CN CN201510168456.3A patent/CN104749074B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1153906A (en) * | 1996-01-03 | 1997-07-09 | 山东省电力学校 | Fast automatic duff fineness detector |
| US6581780B1 (en) * | 2001-01-16 | 2003-06-24 | Ai Enterprises, Inc. | Automatic gradation unit |
| CN103076252A (en) * | 2013-01-05 | 2013-05-01 | 周永乾 | Integrated detector for slurry viscosity and rock debris granularity |
| 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 |
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| CN104749074A (en) | 2015-07-01 |
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