CN102108884A - Lubricating system shared by big and small steam turbines in electric power plant - Google Patents
Lubricating system shared by big and small steam turbines in electric power plant Download PDFInfo
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- CN102108884A CN102108884A CN2011100783262A CN201110078326A CN102108884A CN 102108884 A CN102108884 A CN 102108884A CN 2011100783262 A CN2011100783262 A CN 2011100783262A CN 201110078326 A CN201110078326 A CN 201110078326A CN 102108884 A CN102108884 A CN 102108884A
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Abstract
The invention provides a lubricating system shared by big and small steam turbines in an electric power plant. The lubricating system comprises an oil supply pump, an oil tank, a filter, a cooling device and oil way pipelines, and is a central oil supply station; lubricating oil is pumped out from the oil tank by the oil supply pump; the system is divided into the two oil way pipelines through the cooling device and the filter; and simultaneously oil is supplied for a steam turbine for electric power generating and a steam turbine for water supplying. According to the invention, all scattered lubricating systems are centralized in the existing power plants, and a central oil lubricating system is formed, thus not only is the equipment investment saved (the production cost of a small engine oil system is greatly lowered, and the production cost of two engine oil systems is greatly lowered), but also the work amount for the operation maintaining in the future is reduced, the waste of human resources and material resources is greatly reduced, simultaneously the oil pressure of the lubricating system can be coordinated to adjust, and the lubricating system is convenient to operate in the practical production, and is safe and reliable.
Description
Technical field
The present invention relates to the steam turbine power generation field, specifically is the shared a kind of lubricating oil system of all big small turbines in the power station.
Background technique
Thermal power generation is to utilize the resulting heat energy power-generating of combustion fuel (coal, oil and goods, rock gas etc.), and the generator set in thermal power plant of the prior art has Turbo-generator Set and two kinds of principal modes of Gas Turbine Generating Units.Wherein, in the Turbo-generator Set, fuel burns in boiler and adds hot water and make into steam, and the chemical energy of fuel is transformed into heat energy; Vapor pressure promotes the power generation turbine rotation, and thermal power transfer becomes mechanical energy; Power generation turbine drives the generator rotation then, and mechanical energy is transformed into electric energy; Simultaneously, the vapor condenses Cheng Shuizai that distributes electricity injects water continuously by feed water pump in boiler, makes the circulation of whole generating process carry out in an orderly manner.
For improving power plant's operational efficiency, the steam turbine power generation factory of the above rank of modern 300MW (particularly more than the 600MW) generally adopts small turbine to drive the driving mode of feed water pump.The outfit of steam turbine mainly contains following two kinds of structural types: a kind of is the feed water pump small turbine that 1 big steam turbine that is used to generate electricity is equipped with 2 50% capacity; Another kind is the feed water pump small turbine that 1 big steam turbine that is used to generate electricity is joined 1 100% capacity.
Steam turbine requires in the course of the work to parts continuous lubrications such as the sliding bearing on its main shaft, speed-changing gear box, speed regulators.In the prior art, big steam turbine that is used to generate electricity and feed water pump small turbine all are equipped with independently lubrication system respectively, respectively both lubrication oil supplies are controlled.3 steam turbine just need to be equipped with the different lubrication system of 3 covers, lubrication system is made of oil pump, oil line pipe and various valve, the different lubrication system of 3 covers is taken up an area of huge, wasting of resources phenomenon is serious, simultaneously, on-the-spot oil circuit is very complicated, and oil pressure can not be worked in coordination with adjusting, complex operation in the actual production, is easy to generate accident.
Summary of the invention
The objective of the invention is to: a kind of lubricating oil system of multiple steam turbines fuel feeding in the power station simultaneously is provided.
The technical solution adopted in the present invention is:
The shared lubrication system of the big small turbine of a kind of power plant comprises oil feed pump, fuel tank, filter, cooling unit and oil line pipe; Described lubrication system is a centralized oil supply station, and lubricant oil is pumped in fuel tank by oil feed pump, is divided into the two-way oil line pipe behind cooling unit and filter, simultaneously to power generation turbine and feed pump turbine fuel feeding.
Described oil feed pump is 3, and wherein: 2 is that AC electrical oil pump, 1 are the direct current drive oil pump, usefulness two fully, wherein: an AC electrical oil pump is that work oil pump, another AC electrical oil pump are emergency bearing oil pump, the direct current drive oil pump is an emergency bearing oil pump.
Described 2 AC electrical oil pumps are connected in the ac power supply line, the stable accumulator of oil pressure when being provided with diverter switch between the two and guaranteeing switching.
In the described two-way oil line pipe: a road binders road pipeline goes to power generation turbine, another road to remove feed pump turbine by self-excitation type modulating valve and separating valve by self-excitation type modulating valve and separating valve.
Described cooling unit is two oil coolers, and one is equipped with a usefulness, and the joint of two oil coolers and oil line pipe is provided with switching valve.
Described filter is a duplex strainer.
Oil line pipe in the described centralized oil supply station is provided with relief valve, prevents vexed pump and system overpressure.
The beneficial effect that the present invention produced is:
The big steam turbine that is used to generate electricity is approaching with the lubricating requirement of feed water pump small turbine: its lubricating oil viscosity requires the same, and oil pressure value is also approaching, and the configuration of oil supply system and function are also similar, just has size not on the capacity.The present invention puts together the lubrication system of all dispersions in the present power station, with generating with the lubrication system of the lubrication system of big steam turbine and feed water pump small turbine, to close 3 be one or to close 2 be one, form a concentrated lubricating oil system, be provided with standby system, safety control and energy control section simultaneously.(a little machine oil system cost of production valency is approximately 400,000 so both to have saved equipment investment, 2 is 800,000), reduced the workload of later operation maintenance again, significantly reduced waste to human resources and material resources, the oil pressure of lubrication system can also be worked in coordination with adjusting simultaneously, easy to operate in the actual production, safe and reliable.
Description of drawings
Fig. 1 is a constituent element schematic representation of the present invention;
Fig. 2 is a concrete structure schematic representation of the present invention.
Number in the figure is represented: A-power generation turbine, B-feed pump turbine, M-centralized oil supply station, 1-main oil pump, 2-emergency bearing oil pump, the 3-emergency bearing oil pump, 4-accumulator, 5-relief valve, 6-self-excitation type modulating valve, 7-separating valve, the 8-motor of discharging fume, 9-oil cooler, 10-switching valve, 11-duplex strainer.
Embodiment
As shown in Figure 1, 2, the present invention is the shared lubrication system of the big small turbine of a kind of power plant, comprises oil feed pump, fuel tank, filter, cooling unit and oil line pipe etc.This lubrication system is a centralized oil supply station M, and it both can be to power generation turbine A fuel feeding, also can be to feed pump turbine B1 and B2 fuel feeding.Lubricant oil is pumped in fuel tank by oil feed pump, is divided into the two-way oil line pipe behind oil cooler 9 and duplex strainer 11, simultaneously to power generation turbine A and several feed pump turbines (B1, B2 ...) fuel feeding.
Be provided with 3 oil feed pumps in the M of centralized oil supply station, wherein: 2 is that AC electrical oil pump, 1 are the direct current drive oil pump, one usefulness two is equipped with, and wherein: an AC electrical oil pump is that main oil pump 1, another AC electrical oil pump are emergency bearing oil pump 2 for the work oil pump, and the direct current drive oil pump is an emergency bearing oil pump 3.2 AC electrical oil pumps (being main oil pump 1 and emergency bearing oil pump 2) are connected in the ac power supply line, the stable accumulator 5 of oil pressure when being provided with diverter switch between the two and guaranteeing switching.1 direct current drive oil pump (being emergency bearing oil pump 3) is equipped with DC electrical source, and when ac power supply line dead electricity or fault, emergency bearing oil pump 3 provides lubricant oil required when shutting down for unit.Be provided with the self-excitation type modulating valve on the oil line pipe of above-mentioned main oil pump 1, emergency bearing oil pump 2 and emergency bearing oil pump 3 output terminals, be used to adjust charge oil pressure.
Also be provided with duplex strainer 11 and cooling unit 5 on the oil line pipe in the M of centralized oil supply station.Cooling unit is that two oil coolers 9, are equipped with usefulness, and it is switching valve 10 that the joint of two oil coolers 9 and oil line pipe is provided with diverter switch, so that oil temperature supplying keeps certain.Duplex strainer 11 is the pot strainers that are directly installed on the oil line pipe, and its effect is the turbidity test that assurance enters bearing oil.
Different with the traditional lubrication oil system is, also be provided with separating valve 7 and spill valve 5 in the M of centralized oil supply station, so that the steam turbine in the power plant is between debugging or turn(a)round, when electricity need turn round respectively with steam turbine A, feed pump turbine B1 or B2, separating valve 7 and spill valve 5 play mutual isolation respectively and overflow the effect of unnecessary oil mass, and relief valve 5 main effects are to prevent vexed pump and system overpressure.
The two-way oil line pipe that the oil line pipe of centralized oil supply station M is told, two-way oil line pipe connect power generation turbine A and several feed pump turbines (B1, B2 respectively ...), be provided with self-excitation type modulating valve 6 and separating valve 7 above.Self-excitation type modulating valve 6 is used to adjust oil pressure, and it is constant that charge oil pressure is remained.
Claims (7)
1. the shared lubrication system of the big small turbine of power plant comprises oil feed pump, fuel tank, filter, cooling unit and oil line pipe; It is characterized in that: described lubrication system is a centralized oil supply station, and lubricant oil is pumped in fuel tank by oil feed pump, is divided into the two-way oil line pipe behind cooling unit and filter, simultaneously to power generation turbine and feed pump turbine fuel feeding.
2. the shared lubrication system of the big small turbine of power plant according to claim 1, it is characterized in that: described oil feed pump is 3, wherein: 2 is that AC electrical oil pump, 1 are the direct current drive oil pump, one usefulness two is equipped with, wherein: an AC electrical oil pump is that work oil pump, another AC electrical oil pump are emergency bearing oil pump, and the direct current drive oil pump is an emergency bearing oil pump.
3. the shared lubrication system of the big small turbine of power plant according to claim 2 is characterized in that: described 2 AC electrical oil pumps are connected in the ac power supply line, the stable accumulator of oil pressure when being provided with diverter switch between the two and guaranteeing switching.
4. the shared lubrication system of the big small turbine of power plant according to claim 1 is characterized in that: in the described two-way oil line pipe: a road binders road pipeline goes to power generation turbine, another road to remove feed pump turbine by self-excitation type modulating valve and separating valve by self-excitation type modulating valve and separating valve.
5. the shared lubrication system of the big small turbine of power plant according to claim 1 is characterized in that: described cooling unit is two oil coolers, and one is equipped with a usefulness, and the joint of two oil coolers and oil line pipe is provided with switching valve.
6. the shared lubrication system of the big small turbine of power plant according to claim 1, it is characterized in that: described filter is a duplex strainer.
7. the shared lubrication system of the big small turbine of power plant according to claim 1 is characterized in that: the oil line pipe in the described centralized oil supply station is provided with relief valve, prevents vexed pump and system overpressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100783262A CN102108884A (en) | 2011-03-30 | 2011-03-30 | Lubricating system shared by big and small steam turbines in electric power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011100783262A CN102108884A (en) | 2011-03-30 | 2011-03-30 | Lubricating system shared by big and small steam turbines in electric power plant |
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| CN102108884A true CN102108884A (en) | 2011-06-29 |
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| CN2011100783262A Pending CN102108884A (en) | 2011-03-30 | 2011-03-30 | Lubricating system shared by big and small steam turbines in electric power plant |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806307A (en) * | 2015-05-19 | 2015-07-29 | 神华集团有限责任公司 | Lubricating oil purification system |
| CN112594016A (en) * | 2020-12-02 | 2021-04-02 | 山东齐鲁电机制造有限公司 | Integral oil station for turbine lubricating oil |
| CN114483222A (en) * | 2022-01-26 | 2022-05-13 | 连云港透平能源设备有限公司 | Large energy-saving oil filter for processing turbine oil for power plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032971A (en) * | 1987-11-04 | 1989-05-17 | 曼内斯曼股份公司 | The lubricating fitting of turbo machine |
| DE4304482A1 (en) * | 1993-02-15 | 1994-08-18 | Abb Management Ag | Lubrication system for a turbo-engine |
| JP2005140082A (en) * | 2003-11-10 | 2005-06-02 | Toshiba Corp | Low pressure steam turbine plant |
| CN201386575Y (en) * | 2009-03-31 | 2010-01-20 | 上海电气电站设备有限公司 | Oil tank module device for lubricating oil system of water-feeding pump steam turbine |
-
2011
- 2011-03-30 CN CN2011100783262A patent/CN102108884A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032971A (en) * | 1987-11-04 | 1989-05-17 | 曼内斯曼股份公司 | The lubricating fitting of turbo machine |
| DE4304482A1 (en) * | 1993-02-15 | 1994-08-18 | Abb Management Ag | Lubrication system for a turbo-engine |
| JP2005140082A (en) * | 2003-11-10 | 2005-06-02 | Toshiba Corp | Low pressure steam turbine plant |
| CN201386575Y (en) * | 2009-03-31 | 2010-01-20 | 上海电气电站设备有限公司 | Oil tank module device for lubricating oil system of water-feeding pump steam turbine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806307A (en) * | 2015-05-19 | 2015-07-29 | 神华集团有限责任公司 | Lubricating oil purification system |
| CN112594016A (en) * | 2020-12-02 | 2021-04-02 | 山东齐鲁电机制造有限公司 | Integral oil station for turbine lubricating oil |
| CN114483222A (en) * | 2022-01-26 | 2022-05-13 | 连云港透平能源设备有限公司 | Large energy-saving oil filter for processing turbine oil for power plant |
| CN114483222B (en) * | 2022-01-26 | 2023-06-20 | 连云港透平能源设备有限公司 | Large energy-saving oil filter for treating turbine oil for power plant |
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Application publication date: 20110629 |