CN102861658A - Ventilating device of pulverizing system - Google Patents
Ventilating device of pulverizing system Download PDFInfo
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- CN102861658A CN102861658A CN2012103794780A CN201210379478A CN102861658A CN 102861658 A CN102861658 A CN 102861658A CN 2012103794780 A CN2012103794780 A CN 2012103794780A CN 201210379478 A CN201210379478 A CN 201210379478A CN 102861658 A CN102861658 A CN 102861658A
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- inlet pipe
- air gate
- cold
- air
- coal
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Abstract
The invention provides a ventilating device of a pulverizing system, belongs to the technical field of pulverizing systems of coal-fired boilers and mainly solves the problem that rating of coal mills is limited by ventilating devices of pulverizing systems in prior art. The ventilating device comprises a hot air gate, a cold air gate, a main air gate, an air inlet pipe and a coal mill inlet pipe, wherein the cold air gate is located between the hot air gate and the main air gate, one end of the air inlet pipe is connected with the main air gate, and the other end of the air inlet pipe is connected with the coal mill inlet pipe. The ventilating device of the pulverizing system is characterized by further comprising a small cold air gate which is located between the main air gate and the coal mill inlet pipe, the diameter of the small cold air gate is smaller than that of the cold air gate, and the small cold air gate is communicated with the air inlet pipe through a pipeline.
Description
Technical field
The invention belongs to coal-burning boiler pulverized coal preparation system technical field, be specifically related to the ventilation unit in a kind of pulverized coal preparation system.
Background technology
Exert oneself because of boiler milling system and can't satisfy the required powder amount of combustion system peak period in generating, have a strong impact on unit on-load ability, existing pulverized coal preparation system ventilation unit is restricting exerting oneself of coal pulverizer.
Summary of the invention
The present invention provides the ventilation unit in a kind of pulverized coal preparation system mainly for the problem that prior art exists.
The present invention solves the problems of the technologies described above the technical scheme of taking to be:
Ventilation unit in a kind of pulverized coal preparation system comprises hot air disperser, cold-air flap, total air door, blast pipe and coal pulverizer inlet pipe; Wherein cold-air flap is between hot air disperser and total air door; The total air door of described blast pipe one termination, another termination coal pulverizer inlet pipe is characterized in that: also comprise diameter between total air door and coal pulverizer inlet pipe less than the little cold-air flap of cold-air flap, this little cold-air flap is by pipeline and blast pipe UNICOM.
The present invention compared with prior art has following beneficial effect:
The present invention adopts between total air door and coal pulverizer inlet pipe and installs little cold-air flap additional, so that coal pulverizer ventilation adjustable extent increases, the coal pulverizer inlet blast can long term maintenance-200～-operation of 400Pa optimum condition, the pulverized coal preparation system wear extent obviously weakens, not only reduce the manual maintenance expense, save operating cost, and greatly increase pulverized coal preparation system and exert oneself, improved boiler efficiency.
Description of drawings
Fig. 1 is structural representation of the present invention.
Among the figure: 1-coal pulverizer inlet pipe; 2-blast pipe; 3-little cold-air flap; 4-total air door; 5-cold-air flap; 6-hot air disperser.
The specific embodiment
As shown in Figure 1, the ventilation unit in a kind of pulverized coal preparation system comprises hot air disperser 6, cold-air flap 5, total air door 4, blast pipe 2 and coal pulverizer inlet pipe 1; Wherein cold-air flap 5 is between hot air disperser 6 and total air door 4; The total air door 4 of described blast pipe 2 one terminations, another termination coal pulverizer inlet pipe 1 is characterized in: also comprise diameter between total air door and 4 coal pulverizer inlet pipes 1 less than the little cold-air flap of cold-air flap, this little cold-air flap is by pipeline and blast pipe 2 UNICOMs.
Using method:
When the present invention uses, exert oneself when not reaching the boiler combustion demand when testing out coal pulverizer 7, then can increase pulverizer capacity by regulating hot air disperser, cold-air flap, total air door and little cold-air flap.
Claims (1)
1. the ventilation unit in the pulverized coal preparation system comprises hot air disperser (6), cold-air flap (5), total air door (4), blast pipe (2) and coal pulverizer inlet pipe (1); Wherein cold-air flap (5) is positioned between hot air disperser (6) and the total air door (4); The described blast pipe total air doors of (2) one terminations (4), another termination coal pulverizer inlet pipe (1), it is characterized in that: also comprise the diameter that is positioned between total air door (4) and the coal pulverizer inlet pipe (1) less than the little cold-air flap (3) of cold-air flap, this little cold-air flap is by pipeline and blast pipe (2) UNICOM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103794780A CN102861658A (en) | 2012-09-29 | 2012-09-29 | Ventilating device of pulverizing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103794780A CN102861658A (en) | 2012-09-29 | 2012-09-29 | Ventilating device of pulverizing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102861658A true CN102861658A (en) | 2013-01-09 |
Family
ID=47440942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103794780A Pending CN102861658A (en) | 2012-09-29 | 2012-09-29 | Ventilating device of pulverizing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102861658A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3292496B2 (en) * | 1992-02-26 | 2002-06-17 | バブコック日立株式会社 | Crushing mill for coal-fired boiler |
| CN100538316C (en) * | 2007-09-11 | 2009-09-09 | 西安交通大学 | A kind of thermal power plant ball mill load soft-sensing method |
| CN101612605A (en) * | 2009-07-28 | 2009-12-30 | 义马环保电力有限公司 | Be applied to the programmed control method and the device of coal fired power generation unit boiler pulverized coal preparation system |
| CN202860671U (en) * | 2012-09-29 | 2013-04-10 | 忻州广宇煤电有限公司 | Ventilating device in coal pulverizing system |
-
2012
- 2012-09-29 CN CN2012103794780A patent/CN102861658A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3292496B2 (en) * | 1992-02-26 | 2002-06-17 | バブコック日立株式会社 | Crushing mill for coal-fired boiler |
| CN100538316C (en) * | 2007-09-11 | 2009-09-09 | 西安交通大学 | A kind of thermal power plant ball mill load soft-sensing method |
| CN101612605A (en) * | 2009-07-28 | 2009-12-30 | 义马环保电力有限公司 | Be applied to the programmed control method and the device of coal fired power generation unit boiler pulverized coal preparation system |
| CN202860671U (en) * | 2012-09-29 | 2013-04-10 | 忻州广宇煤电有限公司 | Ventilating device in coal pulverizing system |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130109 |