CN203531977U - Heat-engine plant adjacent machine auxiliary steam heating boiler starting system - Google Patents
Heat-engine plant adjacent machine auxiliary steam heating boiler starting system Download PDFInfo
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- CN203531977U CN203531977U CN201320710771.0U CN201320710771U CN203531977U CN 203531977 U CN203531977 U CN 203531977U CN 201320710771 U CN201320710771 U CN 201320710771U CN 203531977 U CN203531977 U CN 203531977U
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Abstract
The utility model discloses a heat-engine plant adjacent machine auxiliary steam heating boiler starting system, which comprises two steam turbine auxiliary steam headers and two deaerators, wherein the two deaerators are respectively connected with one steam turbine auxiliary steam header and a control valve station through a steam pipeline, the two steam turbine auxiliary steam headers are connected through an auxiliary steam connecting main pipe, the specification of the steam pipeline between the deaerators and the steam turbine auxiliary steam headers is phi (Phi)720*14, the specification of a control valve bypass is Phi530*13, and the specification of the auxiliary steam connecting main pipe between the two steam turbine auxiliary steam headers is Phi377*9. The heat-engine plant adjacent machine auxiliary steam heating boiler starting system has the beneficial effects that a heating method of the heat-engine plant adjacent machine auxiliary steam heating boiler starting system also changes correspondingly by enlarging and improving the steam pipeline between the deaerators and the steam turbine auxiliary steam headers and the auxiliary steam connecting main pipe between the two steam turbine auxiliary steam headers, thereby being capable of reducing oil consumption, and reducing operation cost.
Description
Technical field
The utility model relates to boiler technology field, and particularly the auxiliary vapour heating boiler of a kind of adjacent machine for thermal power plant starts system.
Background technique
600MW unit will carry out cold conditions cleaning process about approximately 75 hours and the hot cleaning process of approximately 50 hours when starting for the first time.After unit puts into operation, if surpassed more than 150 hours with idle time after boiler long-time running, also need to clean hot clean time approximately 20 hours.
When carrying out hot cleaning, the boiler igniting oil firing that is about to begin.Conventional unit is provided with auxiliary steam header to steam line and a modulating valve bypass of oxygen-eliminating device, and the specification of this steam line is Φ 720*14, and the specification of modulating valve bypass is Φ 377*8.For heating or voltage stabilizing during unit starting.It is Φ 273*8.5 that steam between two units connects female pipe specification.
Oxygen-eliminating device is heated to be conventional design, and in cold conditions flushing process, oxygen-eliminating device water temperature general control, 80 ℃ of left and right, is subject to the restriction of oxygen-eliminating device heating efficiency simultaneously, and high energy is by the water temp. heating to 120 of oxygen-eliminating device ℃ left and right, and cold conditions flushing process approximately continues 3 hours.The work such as this stage can carry out that steam turbine is thrown shaft seal, vacuumized simultaneously, high-pressure cylinder falls warm, a little machine of red switch.
Boiler has and needs about 1.5 hours to ignition of the boiler after supercooled state flushing is qualified.
During ignition of the boiler, generally first light 4 startup oil guns and carry out radiator, switch an oil gun every 15 minutes, this boiler is totally 16 startup oil guns, and within 1 hour approximately consuming time, all oil guns switch complete.
And then increase by 3 startup oil guns, and totally 7 startups have rifle jointly to heat, and make the steam-water separator inlet temperature of boiler rise to 190 ℃, reach hot washing condition, and this temperature-rise period needs again about 2.5 hours consuming time.
Then carry out hot flushing.About 12 hours of this process need.
After hot flushing completes, continuation increases throwing and starts oil gun, generally keeps 12 startup oil guns to move simultaneously.Start First coal pulverizer and carry out increasing temperature and pressure, make it arrive steam turbine rolling parameter, this process approximately 2.5 hours consuming time.This stage high pressure cylinder pre-warming completes, and can not extend starting time.
But in actual use, find that the boiler startup system fuel consumption of this structure is larger, cost is higher, from economic angle, need to improve.
Model utility content
Goal of the invention of the present utility model is: for the problem of above-mentioned existence, provide a kind of thermal power plant auxiliary vapour heating boiler of adjacent machine to start system.
The technical solution adopted in the utility model is such: a kind of thermal power plant auxiliary vapour heating boiler of adjacent machine starts system, comprise two steam turbine auxiliary steam headers, two oxygen-eliminating devices, described two oxygen-eliminating devices are connected by steam pipework and a modulating valve station with a steam turbine auxiliary steam header respectively, between two steam turbine auxiliary steam headers, by auxiliary steam, connecting female pipe connects, the specification of the steam line between described oxygen-eliminating device and steam turbine auxiliary steam header is Φ 720*14, the specification of modulating valve bypass is Φ 530*13, it is Φ 377*9 that auxiliary steam between described two steam turbine auxiliary steam headers connects female pipe specification.
As preferably, the valve arranging on the steam line between described oxygen-eliminating device and steam turbine auxiliary steam header is electric valve, and the valve arranging in the modulating valve bypass between described oxygen-eliminating device and steam turbine auxiliary steam header is adjustable electric valve.
In sum, owing to having adopted technique scheme, the beneficial effects of the utility model are: after the specification that is connected female pipe through the steam line between oxygen-eliminating device and steam turbine auxiliary steam header and the auxiliary steam between two steam turbine auxiliary steam headers expands improvement, heating means are corresponding changing also, thereby can reduce oil consumption, reduce operating cost.
Accompanying drawing explanation
Fig. 1 is theory structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail.
Embodiment: as shown in Figure 1, a kind of thermal power plant auxiliary vapour heating boiler of adjacent machine starts system, comprise two steam turbine auxiliary steam headers, two oxygen-eliminating devices, described two oxygen-eliminating devices are connected by steam pipework and a modulating valve station with a steam turbine auxiliary steam header respectively, between two steam turbine auxiliary steam headers, by auxiliary steam, connecting female pipe connects, the specification of the steam line between described oxygen-eliminating device and steam turbine auxiliary steam header is Φ 720*14, the specification of modulating valve bypass is Φ 530*13, it is Φ 377*9 that auxiliary steam between described two steam turbine auxiliary steam headers connects female pipe specification.
The valve arranging on steam line between described oxygen-eliminating device and steam turbine auxiliary steam header is electric valve, and the valve arranging in the modulating valve bypass between described oxygen-eliminating device and steam turbine auxiliary steam header is adjustable electric valve.
Through the utility model so one improve after, the heating efficiency of oxygen-eliminating device is improved.
After boiler water filling, start cold conditions and rinse, it is suitable with conventional Starting mode that cold conditions is rinsed the required time, needs about 3 hours.
If carry out cold conditions flushing but still maintain 80 ℃ of left and right of oxygen-eliminating device water temperature, after completing, flushing also needs the steam-water separator inlet temperature of boiler to be warming up to 190 ℃ to meet hot washing condition, and this just needs the long period.Therefore in cold conditions rinse stage, oxygen-eliminating device temperature progressively can be improved, the mode of taking intensification limit, limit to rinse, can save the required time of hot flushing that meets that is warmed up to after cold conditions has been rinsed.
After cold conditions has been rinsed, oxygen-eliminating device increases gradually vapour amount to maximum heating ability oxygen-eliminating device is warming up to 190 ℃ of left and right.But the steam-water separator inlet water temperature of boiler heats up to reach and approaches hot washing condition and also need certain hour, and estimation is at least also more than 1 hour, and water cooled furnace wall water must heat up by outer row's mode.Taking into account system thermal loss, steam-water separator inlet temperature can not effectively reach 190 ℃, and hot washing time can be longer than hot washing time under conventional Starting mode, approximately 2.5 hours.
After hot flushing completes, boiler stops rinsing outer row, and oxygen-eliminating device steam consumption reduces, and maintains water temperature, and boiler should temporarily keep air-tight state.To 1.5 hours about used times of ignition of the boiler.During igniting, although boiler is the thermal environment in " hot stove, hot blast ", the heating surface such as superheater, reheater is still in cold conditions after all, and be subject to the restriction of intensification, step-up ratio and pulverizing system starting condition, after ignition of the boiler, still need to take to drop into oil gun increasing temperature and pressure, need 8 oil guns, within about 2.5 hours, reach the pulverizing system condition that starts, then increase and throw totally 12 the oil gun operations of 4 oil guns, start First pulverizing system, after 2 hours, reach red switch condition.
Conventional Starting mode is compared with the auxiliary vapour heating starting of adjacent machine of the present utility model mode, be take 600MW unit as example, time consumption and energy consumption result is as shown in the table:
From upper table, can know and find out, start and clean once, start-up cost saving ~ 600,000 yuan, economic benefit is obvious.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (2)
- The 1.Yi Zhong thermal power plant auxiliary vapour heating boiler of adjacent machine starts system, comprise two steam turbine auxiliary steam headers, two oxygen-eliminating devices, described two oxygen-eliminating devices are connected by steam pipework and a modulating valve station with a steam turbine auxiliary steam header respectively, between two steam turbine auxiliary steam headers, by auxiliary steam, connecting female pipe connects, it is characterized in that: the specification of the steam line between described oxygen-eliminating device and steam turbine auxiliary steam header is Φ 720*14, the specification of modulating valve bypass is Φ 530*13, it is Φ 377*9 that auxiliary steam between described two steam turbine auxiliary steam headers connects female pipe specification.
- 2. the auxiliary vapour heating boiler of the adjacent machine of a kind of thermal power plant according to claim 1 starts system, it is characterized in that: on the steam line between described oxygen-eliminating device and steam turbine auxiliary steam header, electric valve is set, in the modulating valve bypass between described oxygen-eliminating device and steam turbine auxiliary steam header, adjustable electric valve is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710771.0U CN203531977U (en) | 2013-11-12 | 2013-11-12 | Heat-engine plant adjacent machine auxiliary steam heating boiler starting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320710771.0U CN203531977U (en) | 2013-11-12 | 2013-11-12 | Heat-engine plant adjacent machine auxiliary steam heating boiler starting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203531977U true CN203531977U (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320710771.0U Withdrawn - After Issue CN203531977U (en) | 2013-11-12 | 2013-11-12 | Heat-engine plant adjacent machine auxiliary steam heating boiler starting system |
Country Status (1)
| Country | Link |
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| CN (1) | CN203531977U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573306A (en) * | 2013-11-12 | 2014-02-12 | 中国电力工程顾问集团西南电力设计院 | Starting system for thermal power plant adjacent machine auxiliary steam heating boiler |
| CN104612763A (en) * | 2014-12-12 | 2015-05-13 | 贵州电力试验研究院 | Device for starting intermediate-pressure cylinder device by using neighbor turbine steam in unitized unit and starting method thereof |
| CN104775858A (en) * | 2015-04-15 | 2015-07-15 | 钱诚 | Intermediate-pressure cylinder rapid starting system for thermal power generation unit set |
| CN104775857A (en) * | 2015-04-15 | 2015-07-15 | 钱诚 | High-pressure cylinder rapid starting system for thermal power generation unit set |
-
2013
- 2013-11-12 CN CN201320710771.0U patent/CN203531977U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573306A (en) * | 2013-11-12 | 2014-02-12 | 中国电力工程顾问集团西南电力设计院 | Starting system for thermal power plant adjacent machine auxiliary steam heating boiler |
| CN103573306B (en) * | 2013-11-12 | 2015-11-18 | 中国电力工程顾问集团西南电力设计院有限公司 | The adjacent machine of a kind of thermal power plant auxiliary vapour heating boiler start up system |
| CN104612763A (en) * | 2014-12-12 | 2015-05-13 | 贵州电力试验研究院 | Device for starting intermediate-pressure cylinder device by using neighbor turbine steam in unitized unit and starting method thereof |
| CN104612763B (en) * | 2014-12-12 | 2017-01-25 | 贵州电力试验研究院 | Starting method of device for starting intermediate-pressure cylinder device by using neighbor turbine steam in unitized unit |
| CN104775858A (en) * | 2015-04-15 | 2015-07-15 | 钱诚 | Intermediate-pressure cylinder rapid starting system for thermal power generation unit set |
| CN104775857A (en) * | 2015-04-15 | 2015-07-15 | 钱诚 | High-pressure cylinder rapid starting system for thermal power generation unit set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER ENGINEERING CONSULTING GROUP SOUTHWEST Free format text: FORMER NAME: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING GROUP CORPORATION |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Patentee after: China Power Engineering Consulting Group Southwest Electric Power Design Institute Co., Ltd. Address before: 610021 Dongfeng Road, Chengdu, Sichuan, No. 18, No. Patentee before: Southwest Electric Power Design Institute of China Power Engineering Consulting Group Corporation |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20151118 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |