CN103388496A - Parameter-variable supercritical unit warming method - Google Patents
Parameter-variable supercritical unit warming method Download PDFInfo
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- CN103388496A CN103388496A CN2013102685954A CN201310268595A CN103388496A CN 103388496 A CN103388496 A CN 103388496A CN 2013102685954 A CN2013102685954 A CN 2013102685954A CN 201310268595 A CN201310268595 A CN 201310268595A CN 103388496 A CN103388496 A CN 103388496A
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Abstract
A parameter-variable supercritical unit warming method is characterized in that in a supercritical unit jointly started by a high-pressure cylinder and a medium-pressure cylinder, the parameters of a turbine are 3.0MPa/360 DEG C in main steam and 0.1MPa/320 DEG C in reheating steam; and in a high-speed warming period, the parameters are gradually changed to be 6.0MPa/390 DEG C in main steam and 0.7MPa/355 DEG C in the reheating steam. The parameter-variable supercritical unit warming method can improve the warming effect of the supercritical unit turbine, and enables each security monitoring parameter of the unit to be more easy to control, thus shortening the starting time of the unit and saving the fuel consumption in the starting process of the unit.
Description
Technical field
The invention belongs to the thermal power plant field, is a kind ofly can shorten supercritical thermal power unit warm-up period, improve the warming-up effect, the method that makes every safety monitoring parameter be easier to control.
Background technique
Expanding day along with the electric power system scale, reaching national requirement to the energy-saving and emission-reduction of thermal power generation unit improves constantly, the economy of unit, environmental protection move more and more important, unit starting warming-up Rational Parameters is controlled, select suitable steam temperature rise rate and steam turbine metal temperature rise rate, not only can shorten the unit warm-up period, improve the warming-up effect, the fuel saving cost, the safe operation for Rotor Life Management and steam turbine is very necessary simultaneously.
For example: domestic certain factory's supercritical unit carries out between limber up period, this brand-name computer group model is CLN600-24.2/566/566, is that the 600MW of Harbin steam turbine Co., Ltd and MITSUBISHI co-design, production is overcritical, resuperheat, single shaft, three cylinder four steam discharges, condensing steam turbine.Producer's value of providing is provided the start-up parameter that this factory adopts at the initial stage, as shown in Figure 1:
Start in running in reality, boiler is for making steam reach the start-up parameter required value, period of combustion is long and burn wayward, after the unit red switch between the high speed warming up period, warming-up effect poor (high speed warming-up after 150 minutes governing stage metal temperature be only 113 ℃), this factory adopts manufacturer's recommended start up curve to start high speed warming-up effect as shown in Figure 2.
Undesirable because of unit high speed warming-up effect, steam turbine cylinder and rotor metal temperature are lower, and this factory is not extended the medium-speed warming time to 260 minute.The a large amount of fuel of boiler consumption, cause a large amount of thermal source losses and economic loss simultaneously thus.
Summary of the invention
The purpose of patent of the present invention is for the supercritical thermal power unit of combination of HP cylinder with IP cylinder mode in the situation that adopt low parameter to start, and further improves its warming-up effect, shortens warm-up period.
The purpose of patent of the present invention is achieved by the following technical solution:
A kind of supercritical unit method of warming up of variable element, in the supercritical unit of combination of HP cylinder with IP cylinder, the rolling parameter of steam turbine is arranged scope be: main steam 3.0MPa-4.0MPa/360 ℃-370 ℃: reheated steam: 0.1MPa-0.3MPa/320 ℃-330 ℃; Between the high speed warming up period, steam parameter progressively is changed to: main steam 6.0MPa-7.0MPa/380 ℃-390 ℃: reheated steam: 0.7MPa-0.9MPa/355 ℃-365 ℃.
Patent advantage of the present invention and effect: patent of the present invention can be improved Supercritical Pressure Steam Turbine warming-up effect, makes the every security monitoring parameter of unit be easier to control and shortened the starting time of unit, saves the fuel consumption in the unit starting process.
For example: domestic certain factory described in " background technique " joint, after adopting patent of the present invention to start, the every security monitoring parameter of unit is easier to control and shortened the starting time of unit.Contrast by starting time,, from ignition of the boiler to steam turbine constant speed 3000r/min, shorten approximately 2.5 hours starting time, capable of saving fuel oil 25t, calculate if press unit life-cycle cold start 300 times, can save 25(t) * ten thousand yuan of 0.8() * ten thousand yuan of 300=6000().After this factory adopts patent of the present invention, steam turbine high speed warming-up Contrast on effect as shown in Figure 2 and Figure 3.
Description of drawings
Fig. 1 provides the cold start plotted curve for prior art manufactory;
Fig. 2 is certain the supercritical pressure turbine 2000rpm of factory warming-up steam turbine metal temperature figure;
Fig. 3 is certain the supercritical pressure turbine 2000rpm of factory warming-up steam turbine metal temperature figure after employing the present invention.
Embodiment
In service in the cold start of supercritical thermal power unit, rationally adjust boiler burning, sliding parameter carries out hydrophobic heating coil to pipelines such as master, reheated steams, make in advance steam turbine possess starting condition, steam parameter reaches main steam 3.0MPa-4.0MPa/360 ℃-370 ℃: reheated steam: 0.1MPa-0.3MPa/320 ℃-330 ℃; Between the high speed warming up period, steam parameter progressively is changed to: main steam 6.0MPa-7.0MPa/380 ℃-390 ℃: reheated steam: 0.7MPa-0.9MPa/355 ℃-365 ℃.
Claims (1)
1. the supercritical unit method of warming up of a variable element, it is characterized in that, in the supercritical unit of combination of HP cylinder with IP cylinder, the rolling parameter of steam turbine is arranged scope be: main steam 3.0MPa-4.0MPa/360 ℃-370 ℃: reheated steam: 0.1MPa-0.3MPa/320 ℃-330 ℃; Between the high speed warming up period, steam parameter progressively is changed to: main steam 6.0MPa-7.0MPa/380 ℃-390 ℃: reheated steam: 0.7MPa-0.9MPa/355 ℃-365 ℃.
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| CN2013102685954A CN103388496A (en) | 2013-06-28 | 2013-06-28 | Parameter-variable supercritical unit warming method |
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| CN2013102685954A CN103388496A (en) | 2013-06-28 | 2013-06-28 | Parameter-variable supercritical unit warming method |
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| CN103388496A true CN103388496A (en) | 2013-11-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612767A (en) * | 2014-12-25 | 2015-05-13 | 中国电力工程顾问集团华东电力设计院 | Method for setting impulse starting pressure setting value of ultra-high pressure cylinder |
| CN109356675A (en) * | 2018-12-13 | 2019-02-19 | 浙江医药高等专科学校 | Feed pump turbine automatic starting control method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090249788A1 (en) * | 2005-10-12 | 2009-10-08 | Henri Diesterbeck | Method for Warming-Up a Steam Turbine |
| CN102278152A (en) * | 2011-07-14 | 2011-12-14 | 湖南省电力公司科学研究院 | Partition control method for fatigue resisting life of steam turbine rotor |
| CN102943696A (en) * | 2012-11-19 | 2013-02-27 | 辽宁省电力有限公司电力科学研究院 | Beizhong 350MW supercritical high-intermediate-pressure combined cylinder steam turbine set cylinder warming process |
-
2013
- 2013-06-28 CN CN2013102685954A patent/CN103388496A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090249788A1 (en) * | 2005-10-12 | 2009-10-08 | Henri Diesterbeck | Method for Warming-Up a Steam Turbine |
| CN102278152A (en) * | 2011-07-14 | 2011-12-14 | 湖南省电力公司科学研究院 | Partition control method for fatigue resisting life of steam turbine rotor |
| CN102943696A (en) * | 2012-11-19 | 2013-02-27 | 辽宁省电力有限公司电力科学研究院 | Beizhong 350MW supercritical high-intermediate-pressure combined cylinder steam turbine set cylinder warming process |
Non-Patent Citations (3)
| Title |
|---|
| 张志远等: "660MW超临界机组冲转参数调整分析", 《发电设备》 * |
| 成凤华: "华能沁北电厂汽轮机调试与运行介绍", 《热力透平》 * |
| 朱军: "600MW超临界汽轮机组冲转情况分析", 《发电设备 》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104612767A (en) * | 2014-12-25 | 2015-05-13 | 中国电力工程顾问集团华东电力设计院 | Method for setting impulse starting pressure setting value of ultra-high pressure cylinder |
| CN104612767B (en) * | 2014-12-25 | 2016-03-16 | 中国电力工程顾问集团华东电力设计院有限公司 | The method of setting ultra-high pressure cylinder red switch pressure set points |
| CN109356675A (en) * | 2018-12-13 | 2019-02-19 | 浙江医药高等专科学校 | Feed pump turbine automatic starting control method |
| CN109356675B (en) * | 2018-12-13 | 2021-10-22 | 浙江医药高等专科学校 | Automatic starting control method for water feeding pump steam turbine |
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Application publication date: 20131113 |