CN207422181U - A kind of boiler of power plant cold start system - Google Patents
A kind of boiler of power plant cold start system Download PDFInfo
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- CN207422181U CN207422181U CN201721452406.9U CN201721452406U CN207422181U CN 207422181 U CN207422181 U CN 207422181U CN 201721452406 U CN201721452406 U CN 201721452406U CN 207422181 U CN207422181 U CN 207422181U
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- coal pulverizer
- air passage
- coal
- bypass
- boiler
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Abstract
A kind of boiler of power plant cold start system, coal pulverizer branch air passage of the coal pulverizer main road air passage, parallel communication connected including coal pulverizer inlet air passage, with coal pulverizer inlet air passage on coal pulverizer main road air passage and connection are in the coal pulverizer of coal pulverizer branch duct outlet, parallel communication is gone back on the coal pulverizer inlet air passage has coal pulverizer to bypass air passage, electric heater is communicated on the coal pulverizer bypass air passage, the both ends of the electric heater are respectively provided with a coal pulverizer bypass air passage switch；The coal pulverizer inlet air passage is switched equipped with coal pulverizer inlet air passage, and the coal pulverizer bypass air passage is connected in parallel on coal pulverizer inlet air passage switch ends.The utility model solves the problems, such as that existing boiler of power plant cold start system start-up cost is high, fuel consumption is big.
Description
Technical field
The utility model is related to boiler startups, particularly a kind of boiler of power plant cold start system.
Background technology
In thermal power plant's generating set cold start stage, the mode of firing coal-dust has fuel ignition, few-oil ignition, micro- in boiler
Four kinds of oil drop fire, plasma igniting modes.The fuel ignition mode that traditional boiler cold-state starts, fuel consumption is larger, base
This is substituted by modes such as few-oil ignition, tiny-oil ignition, plasma ignitions.
Generating set is different with intermediate pressure cylinder wall temperature according to furnace outage time, and starting state can be divided into：Cold start, warm state open
The time that dynamic, hot starting, hot start and very hot startup, wherein cold start need is most long, to meet the needs of boiler cold-state startup,
It needs to coal pulverizer hot wind powder, boiler air preheater soot blowing, feedwater thermal de-aeration, turbine shaft seal vapour, steam feed pump punching
Deng offer auxiliary thermal source.Boiler of power plant starts the mode mainly setting starting trouble room of offer heat source or by adjacent stove neighbour machine at present
Heat source is provided.But heat source can only be provided in a manner that starting trouble room is set for new-built unit, but builds starting trouble room
It needs to increase pork barrel, and starting trouble itself is also required to consumption great amount of fuel oil, so as to which the cold conditions for considerably increasing boiler opens
Dynamic funds.
Utility model content
The purpose of this utility model is to provide a kind of boiler of power plant cold start system, to solve existing boiler of power plant cold conditions
The problem of activation system start-up cost is high, fuel consumption is big.
To achieve the above object, the utility model adopts the following technical solution：A kind of boiler of power plant cold start system, bag
The coal pulverizer main road air passage that include coal pulverizer inlet air passage, connects with coal pulverizer inlet air passage, parallel communication are in coal pulverizer main road wind
Coal pulverizer branch air passage and connection on road is in the coal pulverizer of coal pulverizer branch duct outlet, the coal pulverizer inlet air passage
On go back parallel communication and there is coal pulverizer to bypass air passage, coal pulverizer bypass is communicated with electric heater, the electric heater on air passage
Both ends be respectively provided with coal pulverizer bypass air passage switch；It is opened equipped with coal pulverizer inlet air passage in the coal pulverizer inlet air passage
It closes, the coal pulverizer bypass air passage is connected in parallel on coal pulverizer inlet air passage switch ends.
Preferably, the coal pulverizer bypass air passage switch includes coal pulverizer bypass tunnel inlet switch and coal pulverizer bypasses wind
Road gate out switch；Wherein described coal pulverizer bypass tunnel inlet switch is located at coal pulverizer bypass air inlet of air duct end, the coal-grinding
Machine bypass ducting outlet switch is located at coal pulverizer bypass duct outlet end.
Preferably, the coal pulverizer branch air passage is at least two.
Preferably, the coal pulverizer branch air passage is equipped with coal mill control valve.
Preferably, the electric heater includes five groups of heating modules, and heating module is individually controlled by control system described in every group
System.
Preferably, the power of heating module described in every group is 400kw.
The utility model has the characteristics that and advantageous effect compared with prior art：The utility model is in coal pulverizer inlet
Parallel communication one coal pulverizer in air passage bypasses air passage, and sets electric heater on coal pulverizer bypass air passage, is provided by electric heater
Auxiliary thermal source needed for boiler cold-state start-up course, so as to which starting trouble room or the situation using external heat source need not be being built
It realizes that the cold conditions of generating set boiler quickly starts down, greatly reduces the cost of boiler cold-state startup, reduce fuel consumption,
Start-up course is simplified, is consumed energy by electric energy replacing fuel oil, energy conservation and environmental protection, while the more existing Starting mode of startup speed of boiler
50%-80% is improved, ensures the safely and fast startup of boiler.
The utility model can be widely applied in the cold start system of equipment.
Description of the drawings
The utility model is described in more detail below in conjunction with the accompanying drawings.
Fig. 1 is the system diagram of the utility model.
Reference numeral：1- coal pulverizer inlets air passage, 2- coal pulverizer main roads air passage, 3- coal pulverizer branches air passage, 4- mills
Coal machine, 5- coal pulverizers bypass air passage, 6- electric heaters, 7- coal pulverizer inlets air passage switch, 8- coal pulverizers bypass air passage enter
Mouth switch, 9- coal pulverizers bypass ducting outlet switch, 10- coal mill control valves.
Specific embodiment
Embodiment is shown in Figure 1, a kind of boiler of power plant cold start system, including coal pulverizer inlet air passage 1 and coal-grinding
Coal pulverizer branch 3 air passage of the coal pulverizer main road air passage 2, parallel communication of machine inlet conduits connection on coal pulverizer main road air passage 2
And connection is in the coal pulverizer 4 of 3 air outlet of coal pulverizer branch air passage, wherein the coal pulverizer branch air passage 3 totally six, outlet air
Mouth connects 1# coal pulverizers, 2# coal pulverizers, 3# coal pulverizers, 4# coal pulverizers, 5# coal pulverizers and 6# coal pulverizers, the coal pulverizer 4 respectively
Maximum output is 60 t/h, and parallel communication is gone back on the coal pulverizer inlet air passage 1 has coal pulverizer to bypass air passage 5, the coal pulverizer
Electric heater 6 is communicated on bypass air passage 5, the both ends of the electric heater 6 are respectively provided with a coal pulverizer bypass air passage switch；Institute
It states coal pulverizer inlet air passage 1 and switchs 7 equipped with coal pulverizer inlet air passage, the coal pulverizer bypass air passage 5 is connected in parallel on coal pulverizer and enters
One's intention as revealed in what one says road switchs 7 both ends；The coal pulverizer bypass air passage switch includes coal pulverizer bypass tunnel inlet switch 8 and coal pulverizer bypass
Ducting outlet switch 9；Wherein described coal pulverizer bypass tunnel inlet switch 8 is located at coal pulverizer bypass air inlet of air duct end, described
Coal pulverizer bypass ducting outlet switch 9 is located at coal pulverizer bypass duct outlet end；The coal pulverizer branch air passage 3 is at least two
Item；The coal pulverizer branch air passage 3 is equipped with coal mill control valve 10；The electric heater 6 include five groups of heating modules, every group
The heating module is individually controlled by control system；The power of heating module described in every group is 400kw.
The course of work of the utility model：Below by taking 600MW unit boiler cold start as an example, when boiler cold-state starts,
Coal pulverizer inlet air passage switch 7 is closed, and opens coal pulverizer bypass tunnel inlet switch 8 and mill on coal pulverizer bypass air passage 5
Coal machine bypass ducting outlet switch 9, cold air enters coal pulverizer bypass air passage 5, while starts electric heater 6 to a coal pulverizer
Cold air needed for 4 is heated, and when temperature reaches 60-90 DEG C, coal pulverizer 4 reaches operating condition, then opens connection 1#
Coal mill control valve 10 on the coal pulverizer branch air passage 3 of coal pulverizer starts 1# coal pulverizers, adjusts 1# pulverizer capacities and reaches 20
The 1/3 of t/h namely its maximum output（Maximum output is 60 t/h）, after ignition of the boiler burning, when air preheater heats First air
To after required temperature, coal pulverizer inlet air passage 1 is opened, and the coal pulverizer bypass air passage closed on coal pulverizer bypass air passage 5 enters
Mouthful switch 8, coal pulverizer bypass ducting outlet switch 9 and electric heater 6, progressively start 1# coal pulverizers to its maximum output and by
Step starts whole coal pulverizers, when Boiler Steam parameter reaches certain parameter, to the auxiliary vapour header steam supply of generating set, then by auxiliary
Vapour header is supplied to water thermal de-aeration and the required vapour of steam feed pump red switch, completes the cold start of boiler.
Claims (6)
1. a kind of boiler of power plant cold start system, including coal pulverizer inlet air passage（1）, the mill that connects with coal pulverizer inlet air passage
Coal owner's transportation work style road（2）, parallel communication is in coal pulverizer main road air passage（2）On coal pulverizer branch air passage（3）And connection is being ground
Coal machine branch air passage（3）The coal pulverizer of air outlet（4）, it is characterised in that：The coal pulverizer inlet air passage（1）On go back parallel communication
There is coal pulverizer to bypass air passage（5）, the coal pulverizer bypass air passage（5）On be communicated with electric heater（6）, the electric heater（6）
Both ends be respectively provided with coal pulverizer bypass air passage switch；
The coal pulverizer inlet air passage（1）Coal pulverizer inlet air passage is equipped with to switch（7）, the coal pulverizer bypass air passage（5）And
It is associated in coal pulverizer inlet air passage switch（7）Both ends.
2. boiler of power plant cold start system according to claim 1, it is characterised in that：It opens in the coal pulverizer bypass air passage
Pass includes coal pulverizer bypass tunnel inlet switch（8）With coal pulverizer bypass ducting outlet switch（9）；
Wherein described coal pulverizer bypass tunnel inlet switch（8）Coal pulverizer bypass air inlet of air duct end is located at, by the coal pulverizer
Road ducting outlet switch（9）It is located at coal pulverizer bypass duct outlet end.
3. boiler of power plant cold start system according to claim 2, it is characterised in that：The coal pulverizer branch air passage
（3）At least two.
4. boiler of power plant cold start system according to claim 3, it is characterised in that：The coal pulverizer branch air passage
（3）It is equipped with coal mill control valve.
5. according to claim 1-4 any one of them boiler of power plant cold start systems, it is characterised in that：The electric heater
（6）Including five groups of heating modules, heating module is individually controlled by control system described in every group.
6. boiler of power plant cold start system according to claim 5, it is characterised in that：The work(of heating module described in every group
Rate is 400kw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721452406.9U CN207422181U (en) | 2017-11-03 | 2017-11-03 | A kind of boiler of power plant cold start system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721452406.9U CN207422181U (en) | 2017-11-03 | 2017-11-03 | A kind of boiler of power plant cold start system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207422181U true CN207422181U (en) | 2018-05-29 |
Family
ID=62307034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721452406.9U Active CN207422181U (en) | 2017-11-03 | 2017-11-03 | A kind of boiler of power plant cold start system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207422181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294799A (en) * | 2021-05-27 | 2021-08-24 | 东方电气集团东方锅炉股份有限公司 | Hot primary air and air-powder mixture heat exchange system |
-
2017
- 2017-11-03 CN CN201721452406.9U patent/CN207422181U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113294799A (en) * | 2021-05-27 | 2021-08-24 | 东方电气集团东方锅炉股份有限公司 | Hot primary air and air-powder mixture heat exchange system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Patentee after: STATE POWER HUNAN BAOQING COAL POWER Co.,Ltd. Address before: 100039 room 911, 1 building, 16 West Fourth Ring Road, Haidian District, Beijing. Patentee before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. Patentee before: STATE POWER HUNAN BAOQING COAL POWER Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Patentee after: National Energy Group Baoqing Power Generation Co.,Ltd. Address before: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee before: Guoneng Longyuan environmental protection Co.,Ltd. Patentee before: STATE POWER HUNAN BAOQING COAL POWER Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |