CN101008330B - Starting method of blast-furnace top gas recovery turbine generator - Google Patents
Starting method of blast-furnace top gas recovery turbine generator Download PDFInfo
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- CN101008330B CN101008330B CN200610135173A CN200610135173A CN101008330B CN 101008330 B CN101008330 B CN 101008330B CN 200610135173 A CN200610135173 A CN 200610135173A CN 200610135173 A CN200610135173 A CN 200610135173A CN 101008330 B CN101008330 B CN 101008330B
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- turbine generator
- blast
- input end
- valve group
- gas
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- Blast Furnaces (AREA)
Abstract
The invention relates to a method for starting the blast furnace gas left-pressure turbine generator, which comprises that first setting the pressure difference between the input and output of washing device, closing the bypass valve, opening the start valve at the input of turbine generator, and inputting the blast-furnace gas from the output of washing device into the turbine generator via the starting valve, to accelerate the start of turbine generator via the pressure increase of input gas. The low-pressure start can avoid large impact force at the start valve and the stator axle, while the start valve can be opened easily, the stator axle will not deflect and the start success ratio can reach 100%.
Description
Technical field:
The present invention relates to a kind of startup method of blast-furnace top gas recovery turbine generator.
Background technique:
Blast-furnace top gas recovery turbine generator abbreviates " TRT " as, and it is that acting drives a kind of device of generator set generating through turbine expansion for the energy of the blast furnace gas that will lose in the original reduction valve group.Usually need pass through cyclone dust collector and washing machine from the coal gas of blast furnace output, and behind the parts such as eddy flow water separator, the pipeline through two parallel connections inputs to TRT again.Wherein one of the pipeline of described two parallel connections is by the bypass valve group bypass pipe fitting that is connected with the gas storage parts, makes blast furnace gas can directly enter the gas storage parts; And another is to be connected with the input end of TRT through the starter gate valve group, to utilize blast furnace gas as energy, makes the TRT generating.Wherein, what the bypass valve group generally included two parallel connections cuts valve and an electric control valve in parallel with cutting valve soon soon, and the starter gate valve group generally includes starter gate valve and inlet cut-off valve, and cuts these three serial connection valves of valve soon.The angle adjustment with rotation that is provided with in the described TRT by axis limit enters the stator blade of coal gas amount in it, and the angle of swing of stator blade is controlled by speed regulator.
In the prior art, the TRT device all adopts the mode of high voltage startup when starting, promptly at first the starter gate valve group is closed, open the electric control valve in the bypass valve group, when the inlet pressure value of TRT reaches the 150Kpa left and right sides, again the starter gate valve group is opened, TRT is started to utilize the formed impact force of high pressure gas.Yet, the problem that the mode of this kind high voltage startup at first reflects is owing to have the pressure reduction of 150Kpa between the entrance and exit of starter gate valve group, the starter gate valve group must overcome this pressure reduction and just can open it when opening, so, bring bigger difficulty to start-up operation, also easily cause simultaneously starter gate valve to damage, even if adopt the valve of pressure equalizing valve or Chinese People's Anti-Japanese Military and Political College's moment of torsion also can't overcome above-mentioned defective; When second problem is high voltage startup, high pressure gas can produce sizable impact force to stator blade among the TRT and stator blade axle, the stator blade axle very easily produces skew under this impacting with high pressure, not only can influence the working life of unit, but also can cause starting failure because of stator blade axle offset angle is excessive; The 3rd problem is that starter gate valve is when opening, the TRT unit is under the promotion of airflow, its initial velocity is usually above 1500 rev/mins, therefore automatic control system can send trouble signal, this also is the Another reason that causes starting failure, and further proposition is, even the starter gate valve group is slowly opened, the rotating speed of TRT unit can not be lower than 890 rev/mins yet, and this rotating speed equally also can cause very big infringement to unit.
In addition; because the TRT inlet pressure is controlled by the delivery pressure of blast furnace furnace roof; when the inlet pressure of TRT changes suddenly; can directly cause the pressure surge of blast furnace furnace roof; and the relative blast furnace of TRT is to lay under tribute; when its ordinary production of influence of fluctuations of blast furnace top pressure, TRT can be by forced-stopping machine.
Summary of the invention:
Task of the present invention provides a kind of mode of utilizing low voltage starting and solves that the starter gate valve group is difficult for opening and the startup method of the blast-furnace top gas recovery turbine generator of stator blade axle offset problem.
The startup method of blast-furnace top gas recovery turbine generator proposed by the invention may further comprise the steps: the gas pressure that washing machine input end and end at first are set is poor, and close the bypass valve group, opening installation is in the starter gate valve group of turbine generator input end, allow the blast furnace gas of washing machine output terminal output be directly inputted in the turbine generator, make turbine generator little by little quicken to start with the increase of seeing the input gas pressure by the starter gate valve group; When the gas pressure of turbine generator input end reaches or during near 20Kpa, adjusts the static blade angle that is installed in the turbine generator automatically with speed regulator, the rotation acceleration of turbine generator is controlled at 4 revolutions per seconds
2To 6 revolutions per seconds
2Between, and when the gas pressure of turbine generator input end reaches 80-100Kpa, again speed regulator is adjusted to automatic raising speed position, make turbine engine pass through critical speed of rotation apace.
The startup method of blast-furnace top gas recovery turbine generator proposed by the invention (TRT) has adopted the mode of low voltage starting, allow the automatic raising speed of speed regulator in the TRT unit, like this, band presses coal gas can not produce big impact force to starter gate valve group and stator blade axle, the starter gate valve group is easy to open, and the stator blade axle can not be offset, and it starts success rate can reach 100%; Simultaneously, this kind Starting mode makes maximum vibration value that unit passes through critical speed of rotation less than 80um, causes the degree of fatigue of unit machinery obviously to alleviate, and can prolong the working life of unit; In addition, the rotating speed control during owing to unit starting steadily causes unit to be very easy to be incorporated into the power networks.
Embodiment:
After the unit turning engine starts, close the bypass valve group, opening installation is in the starter gate valve group of turbine generator input end simultaneously, allow blast furnace gas flow directly in the TRT, and detect the gas pressure of TRT unit input end by measuring apparatus, the gas pressure that shows the turbine generator input end when testing result is regulated speed regulator during near 20Kpa, and the Acceleration Control that turbine generator is rotated is at 4-5 revolutions per second
2Between, and when the gas pressure of turbine engine input end reaches 80-100Kpa, again speed regulator is adjusted to automatic raising speed position, make turbine engine pass through critical speed of rotation apace.Described unit turning engine is arranged on the parts in the TRT, and its function is that the generator that utilizes the unit turning engine to drive in the TRT rotates.
Claims (1)
1. the startup method of blast-furnace top gas recovery turbine generator is characterized in that may further comprise the steps:
The gas pressure that washing machine input end and output terminal at first are set is poor, and close the bypass valve group, opening installation is in the starter gate valve group of turbine generator input end, allow the blast furnace gas of washing machine output terminal output be directly inputted in the turbine generator, make turbine generator little by little quicken to start along with the increase of input gas pressure by the starter gate valve group; When the gas pressure of turbine generator input end reaches or during near 20Kpa, utilizes speed regulator to adjust the static blade angle that is installed in the turbine generator automatically, the rotation acceleration of turbine generator is controlled at 4 revolutions per seconds
2To 6 revolutions per seconds
2Between, and when the gas pressure of turbine generator input end reaches 80-100Kpa, again speed regulator is adjusted to automatic raising speed position, make turbine engine pass through critical speed of rotation apace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610135173A CN101008330B (en) | 2006-12-29 | 2006-12-29 | Starting method of blast-furnace top gas recovery turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610135173A CN101008330B (en) | 2006-12-29 | 2006-12-29 | Starting method of blast-furnace top gas recovery turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101008330A CN101008330A (en) | 2007-08-01 |
| CN101008330B true CN101008330B (en) | 2010-05-12 |
Family
ID=38696948
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610135173A Expired - Fee Related CN101008330B (en) | 2006-12-29 | 2006-12-29 | Starting method of blast-furnace top gas recovery turbine generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN101008330B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101710816B (en) * | 2009-09-15 | 2012-05-30 | 西安陕鼓动力股份有限公司 | Remote automatic switching method of DC excitation source of AC exciter |
| CN103075208B (en) * | 2011-10-25 | 2014-10-29 | 上海梅山钢铁股份有限公司 | Method for reducing vibration in start-up process of blast furnace top gas recovery turbine unit |
| CN103614500B (en) * | 2013-12-05 | 2016-01-20 | 攀钢集团攀枝花钢钒有限公司 | Promote the control method of the disposable start success ratio of blast furnace TRT |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378038A (en) * | 2001-04-03 | 2002-11-06 | 武汉钢铁设计研究总院 | Turbine generating process for one machine to recover waste gas energy from several blast furnaces |
-
2006
- 2006-12-29 CN CN200610135173A patent/CN101008330B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1378038A (en) * | 2001-04-03 | 2002-11-06 | 武汉钢铁设计研究总院 | Turbine generating process for one machine to recover waste gas energy from several blast furnaces |
Non-Patent Citations (5)
| Title |
|---|
| 孙卯君等.国产TRT开车启动与一级静叶之调控.冶金动力 第90期.2002,(第90期),第22-23页. |
| 孙卯君等.国产TRT开车启动与一级静叶之调控.冶金动力 第90期.2002,(第90期),第22-23页. * |
| 张洁等.TRT在马钢2500m3高炉的成功应用.冶金自动化.2003,第19-21页. * |
| 杜凤祥.高炉煤气余压发电装置两种工艺比较.冶金动力 第109期.2005,(第109期),第4-5,8页. |
| 杜凤祥.高炉煤气余压发电装置两种工艺比较.冶金动力 第109期.2005,(第109期),第4-5,8页. * |
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| Publication number | Publication date |
|---|---|
| CN101008330A (en) | 2007-08-01 |
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Granted publication date: 20100512 Termination date: 20101229 |