CN102563685A - Selecting method for fan design parameters of thermal power plant - Google Patents
Selecting method for fan design parameters of thermal power plant Download PDFInfo
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- CN102563685A CN102563685A CN2011104231374A CN201110423137A CN102563685A CN 102563685 A CN102563685 A CN 102563685A CN 2011104231374 A CN2011104231374 A CN 2011104231374A CN 201110423137 A CN201110423137 A CN 201110423137A CN 102563685 A CN102563685 A CN 102563685A
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Abstract
The invention discloses a selecting method for fan design parameters of a thermal power plant. The fan design parameters comprise wind volume parameters and wind pressure parameters. The selecting method is characterized in that a reference point of fan design is arranged at an BRL (Boiler Rating Location) point. The selecting method for the wind volume parameters of the fan design comprises the following steps: firstly, respectively calculating smoke wind volumes Q1 and Q2 generated by a boiler under work conditions of the BRL and BMCR (Boiler Maximum Continuous Rating); and the secondly, calculating a smoke wind volume parameter Q of the fan at a point TB, wherein Q is equal to alpha*Q1 and alpha is selected according to the provision in Design Technical Regulation of Thermal Power (DL5000-2000); the wind pressure parameters of the blow design are selected according to the following steps of: firstly, respectively calculating pipeline resistances P11 and P12 of a smoke wind system according to the Q1 and Q2; and secondly, calculating equipment resistances P21 and P22 of the smoke wind system according to the equipment resistance provided by a manufacturer and calculating a wind pressure parameter P at the point TB of the fan, wherein P is equal to beta *P11 plus P22 and beta is selected according to the Design Technical Regulation of Thermal Power (DL5000-2000). According to the selecting method disclosed by the invention, actual operation of the fan is enabled to be closer to a design value; and TB point parameters of the fan can be effectively reduced, so that the aim of reducing power consumption for the long-term operation of the fan is achieved.
Description
Technical field
What the present invention relates to is the choosing method of thermal power plant Fan Selection parameter, comprises design parameter and the Fan Selection allowance of optimizing the Fan Selection datum mark, belongs to the thermal power plant design field.
Background technology
Along with energy scarcity, the energy-conservation topic of all paying close attention to very much in the world that becomes.Energy-conservation also is long-range strategy and policy of China's economy and social development, can effectively alleviate energy 'bottleneck' restrictions, builds energy-efficient society, promotes the sustainable development of socio-economy.The Eleventh Five-Year Plan outline of China has clearly proposed the notion of " energy-saving and emission-reduction ", the target and the general requirement of realization energy-saving and emission-reduction that " the comprehensive programme of work of energy-saving and emission-reduction " that the Committee of Development and Reform formulated in 2007 is further clear and definite.For thermal power plant, reducing station service is an effective means that improves thermal power plant's energy utilization rate.As primary air fan, pressure fan and the air-introduced machine of boiler major pant item, the power consumption of these blower fans accounts for the major part of station service, therefore, selects rational Fan Selection parameter, reduces the operation power consumption of blower fan, to saving station service significant effect is arranged.
Summary of the invention
The objective of the invention is to overcome the existing irrationality of choosing of Fan Selection parameter in the prior art; A kind of datum mark through adjustment blower fan allowance is provided, optimizes the means such as blower fan drag computation method that TB is ordered; Make the actual motion of blower fan more press close to design load; And effectively reduced the TB point parameter of blower fan, to reach the choosing method of the thermal power plant Fan Selection parameter that reduces blower fan long-time running power consumption purpose.
The objective of the invention is to accomplish through following technical scheme, described Fan Selection parameter comprises air quantity parameter and blast parameter, and the datum mark of Fan Selection is arranged on the BRL point, and wherein said Fan Selection air quantity parameters of choice is:
First calculates the cigarette air quantity Q that boiler is produced respectively under BRL, BMCR operating mode
1, Q
2,
Second calculates the blower fan TB air quantity parameter Q that lights a cigarette,
Q=α*Q
1，
Wherein α chooses by " thermal power plant designing technique rules " regulation in (DLT5000-2000);
Said Fan Selection blast parameters of choice is:
First presses Q respectively
1, Q
2Calculate the resistance of ducting P of air and gas system
11, P
12,
Second equipment resistance that provide by each producer calculates the equipment resistance P of air and gas system
21, P
22,
Calculate blower fan TB point blast parameter P, P=β * P
11+ P
22,
Wherein β chooses by " thermal power plant designing technique rules " regulation in (DLT5000-2000).
The present invention can make the actual motion of blower fan more press close to design load, can effectively reduce the TB point parameter of blower fan, reduces blower fan long-time running power consumption purpose to reach.
The specific embodiment
To combine specific embodiment that the present invention is done detailed introduction below:
1. the selection principle of Fan Selection datum mark parameter
At present, by " thermal power plant designing technique rules " (DLT5000-2000), the datum mark of Fan Selection is the BMCR operating mode, and promptly blower fan TB point parameter is on the basis of blower fan BMCR point parameter, to multiply by air quantity, coefficient of wind pres.Several years ago, because the general short of electricity phenomenon in the whole nation makes power plant be able to ultra sending out in peak times of power consumption, promptly often there is the ultra discovery that exceeds the unit name plate rating to resemble.But in recent years; China's power construction development is rapid, and particularly country strengthens the nuclear power construction, and electricity market is close to saturated; The rate of load condensate of 600MW and above unit does not often reach design load in the declared working condition time; Through being everlasting 70～80% and following load operation, the BMCR operating mode can not reach in actual conditions, and the peak of power plant's actual motion should be the TRL point.And the development trend of pressing network load, this situation is from now on last very long.In view of the situation, the present invention is that datum mark with Fan Selection is arranged on the BRL point.
2. choosing of blower fan allowance is: it comprises
Choosing of air quantity allowance is to choose with " thermal power plant designing technique rules " regulation in (DLT5000-2000);
Choosing of blast allowance,
The composition of blower pressure generally speaking can separated into two parts; The one, the resistance of ducting of system, the 2nd, the equipment resistance that manufacturer provides, wherein the equipment resistance that provides of manufacturer accounts for about 50% of primary air system resistance; Account for about 85% of secondary air system or flue gas system; And if the resistance that instrument factory the provides resistance under the extreme operating condition often with the datum mark resistance of these resistances as Fan Selection, multiply by corresponding coefficient by standard again and obtains TB point parameter; Will cause blower fan TB point parameter excessive, the long-time running of operation rear fan is in the poor efficiency district.Therefore, the present invention proposes the optimization method that following fan pressure calculates:
1),, considers certain allowance with reference to " thermal power plant designing technique rules " (DLT5000-2000) middle requirement for the resistance of ducting;
2) TB of blower fan point resistance is not considered the resistance allowance of capital equipment, and the BMCR point calculation of resistance that provides by equipment producer is like burner, boiler body, coal pulverizer, denitrification apparatus, deduster, low-level (stack-gas) economizer and desulphurization system.
Embodiment:
1. air-introduced machine type selecting air quantity parameters of choice,
1.1 calculate the exhaust gas volumn Q that boiler is produced respectively under BRL, BMCR operating mode
1, Q
2,
1.2 calculate air-introduced machine TB point exhaust gas volumn parameter Q,
Q=α*Q
1，
Wherein α chooses by " thermal power plant designing technique rules " regulation in (DLT5000-2000);
2. air-introduced machine type selecting blast parameters of choice,
2.1 press Q respectively
1, Q
2Calculate the resistance of ducting P of flue gas system
11, P
12,
2.2 the equipment resistance that provides by each producer calculates the equipment resistance P of flue gas system
21, P
22,
2.3 calculate air-introduced machine TB point blast parameter P,
P=β*P
11+P
22，
Wherein β chooses by " thermal power plant designing technique rules " regulation in (DLT5000-2000).
3. air-introduced machine type selecting parameter
| Project | BRL | BMCR | The allowance coefficient | TB |
| Air-introduced machine type selecting air quantity parameter | Q 1 | Q 2 | α | α*Q 1 |
| Air-introduced machine type selecting blast parameter | P 11+P 21 | P 12+P 22 | β | β*P 11+P 22 |
Claims (1)
1. the choosing method of a thermal power plant Fan Selection parameter, described Fan Selection parameter comprises air quantity parameter and blast parameter, it is characterized in that the datum mark of Fan Selection is arranged on the BRL point, wherein said Fan Selection air quantity parameters of choice is:
First calculates the cigarette air quantity Q that boiler is produced respectively under BRL, BMCR operating mode
1, Q
2,
Second calculates the blower fan TB air quantity parameter Q that lights a cigarette,
Q=α*Q
1，
Wherein α chooses by " thermal power plant designing technique rules " regulation in (DLT5000-2000);
Said Fan Selection blast parameters of choice is:
First presses Q respectively
1, Q
2Calculate the resistance of ducting P of air and gas system
11, P
12,
Second equipment resistance that provide by each producer calculates the equipment resistance P of air and gas system
21, P
22,
Calculate blower fan TB point blast parameter P, P=β * P
11+ P
22,
Wherein β chooses by " thermal power plant designing technique rules " regulation in (DLT5000-2000).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104231374A CN102563685A (en) | 2011-12-16 | 2011-12-16 | Selecting method for fan design parameters of thermal power plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104231374A CN102563685A (en) | 2011-12-16 | 2011-12-16 | Selecting method for fan design parameters of thermal power plant |
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|---|---|
| CN102563685A true CN102563685A (en) | 2012-07-11 |
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|---|---|---|---|
| CN2011104231374A Pending CN102563685A (en) | 2011-12-16 | 2011-12-16 | Selecting method for fan design parameters of thermal power plant |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080041076A1 (en) * | 2006-08-15 | 2008-02-21 | American Power Conversion Corporation | Method and apparatus for cooling |
| CN201171962Y (en) * | 2007-12-14 | 2008-12-31 | 广东省电力设计研究院 | Two-furnace one-tower type wet flue gas desulfurization device gas system |
-
2011
- 2011-12-16 CN CN2011104231374A patent/CN102563685A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080041076A1 (en) * | 2006-08-15 | 2008-02-21 | American Power Conversion Corporation | Method and apparatus for cooling |
| CN201171962Y (en) * | 2007-12-14 | 2008-12-31 | 广东省电力设计研究院 | Two-furnace one-tower type wet flue gas desulfurization device gas system |
Non-Patent Citations (3)
| Title |
|---|
| 何江涛、张小明: "1000MW火电机组锅炉三大风机参数选型优化", 《科技与企业》 * |
| 王杰: "桐梓电厂2×600MW机组工程引风机选型", 《华电技术》 * |
| 郝卫，那尔苏，廖海燕: "1000MW机组锅炉风机选型计算方法探讨", 《发电设备》 * |
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Application publication date: 20120711 |