CN206753666U - A kind of critical oil supply system of turbine LP rotors - Google Patents
A kind of critical oil supply system of turbine LP rotors Download PDFInfo
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- CN206753666U CN206753666U CN201720620082.9U CN201720620082U CN206753666U CN 206753666 U CN206753666 U CN 206753666U CN 201720620082 U CN201720620082 U CN 201720620082U CN 206753666 U CN206753666 U CN 206753666U
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- oil
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- lubricating
- turbine
- centrifugal pump
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Abstract
The centrifugal pump between main fuel tank and lubricating oil main pipe is arranged on the utility model discloses a kind of critical oil supply system of turbine LP rotors, including by oil pipeline, and the centrifugal pump passes through the Diesel Driven that is attached thereto；Being provided with oil pipeline between centrifugal pump and lubricating oil main pipe prevents the non-return valve of lubricating oil adverse current；One hand-operated valve is set respectively in the oil pipeline at centrifugal pump both ends.The utility model is applied in steam turbine power generation group; as standby oil supply system; can be when AC Lub oil pump and DC lubricating can not start; lubricating oil is provided for Turbo-generator Set; ensure that unit can smoothly be shut down; avoid that oil-break tile kilning occurs and grind the serious accident of axle, Reliable guarantee is provided for the safety of unit.
Description
Technical field
Thermal power plant's steam turbine generator technical group field is the utility model is related to, particularly a kind of profit of turbine LP rotors
Oil system.
Background technology
Turbine oil system is mainly used in providing lubricating oil to each bearing of Turbo-generator Set, while is hidden to crisis
Disconnected device, generator Seal Oil device and jacking oil system provide working oil.Traditional turbine oil system by main oil pump,
One AC Lub oil pump and DC lubricating composition, mainly provided from AC Lub oil pump to system during Unit Commitment
Lubricating oil, lubricating oil is provided from main oil pump to system during normal operation, DC lubricating is accident grease pump.
No. 161 issued on April 15th, 2014 according to National Energy Board《Prevent 25 emphasis of power generation accident
It is required that》In " 8.4 prevent steam turbine, gas turbine bearing shell damage accident " require it is as follows：" 8.4.1 steam turbines, gas turbine system
The lubricating oil accumulator (such as top petrol tank) of enough capacity should be prepared or design by making business or designing institute, once grease pump and system
Break down, accumulator can ensure unit safety shut down, do not occur bearing shell burn out, journal wearing.Before unit starting, lubricating oil
Accumulator and its system must possess the condition of coming into operation, and otherwise must not start.The unit of non-design and installation lubricating oil accumulator, should be mended
And if completion is installed and rinsed during major overhaul, possesses the condition of coming into operation ", " the slow-witted dc source system of 8.4.7 direct currents lubricating oil
System should have enough amounts of gulping down, and reasonable disposition is answered in its insurance at different levels, prevents that fuse blows lose DC lubricating during failure
Power supply ".
One important criteria of 25 Xiang Fancuoshi electricity power enterprises, but in recent years, guarantor once occurred for more units
Peace section, direct current section hinder dead electricity or AC Lub oil pump and DC lubricating while break down and cause to exchange lubrication for some reason
Oil pump and DC lubricating can not start, and so as to cause the serious accident of unit oil-break tile kilning to occur, be made to electricity power enterprise
Into huge economic loss.
Chinese patent 201620671351X discloses a kind of turbine oil system for preventing oil-break tile kilning, in main oil
The top of case is provided with a top petrol tank；Although this scheme can be played to the urgent work for having source of lubrication of steam turbine conveying
With, but because the highly desirable of top petrol tank is set higher than unit centre line nearly 10m, and the volumetric ratio main fuel tank of top petrol tank
Volume is many times greater, therefore requirement of the construction top petrol tank to computer room building is higher, and one-time investment is big, maintenance cost
It is high；Particularly operation unit needs to change original building structure, is almost difficult to carry out.
Therefore, it is badly in need of increasing a set of critical oil supply system in existing turbine LP rotors lubricating oil system, it is ensured that vapour
The serious accident of oil-break tile kilning does not occur for turbine generator group.
Utility model content
The utility model technical issues that need to address be to provide it is a kind of it is simple in construction, reliable and stable, investment cost is low
The critical oil supply system of Turbo-generator Set, can be vapour when AC Lub oil pump and DC lubricating can not start
Turbine generator group provides lubricating oil, it is ensured that unit can smoothly be shut down, and avoided that oil-break tile kilning occurs and ground the serious accident of axle.
In order to solve the above technical problems, technical solution adopted in the utility model is as follows.
A kind of critical oil supply system of turbine LP rotors, including main fuel tank and lubricating oil are arranged on by oil pipeline
Centrifugal pump between main pipe, the centrifugal pump pass through the Diesel Driven that is attached thereto；Between centrifugal pump and lubricating oil main pipe
Being provided with oil pipeline prevents the non-return valve of lubricating oil adverse current.
A kind of critical oil supply system of above-mentioned turbine LP rotors, sets respectively in the oil pipeline at centrifugal pump both ends
Put a hand-operated valve.
A kind of critical oil supply system of above-mentioned turbine LP rotors, the centrifugal pump are self-priming centrifugal lubrication oil pump.
As a result of above technical scheme, technological progress acquired by the utility model is as follows.
The utility model is applied in steam turbine power generation group, can be in AC Lub oil pump as standby oil supply system
When can not start with DC lubricating, lubricating oil is provided for Turbo-generator Set, it is ensured that unit can smoothly be shut down, and be avoided
Oil-break tile kilning occurs and grinds the serious accident of axle, Reliable guarantee is provided for the safety of unit.
Brief description of the drawings
Fig. 1 is system construction drawing of the present utility model.
Wherein：1. main fuel tank, 2. lubricating oil main pipes, 3. oil pipelines, 4. centrifugal pumps, 5. hand-operated valves, 6. non-return valves, 7. bavins
Oil machine.
Embodiment
The utility model is further elaborated below in conjunction with the drawings and specific embodiments.
A kind of critical oil supply system of turbine LP rotors, its structure as shown in figure 1, including centrifugal pump 4, diesel engine 7,
Non-return valve 6, oil pipeline 3 and two hand-operated valves 5, oil pipeline 3 are used to connect main fuel tank 1 and lubricating oil main pipe 2, centrifugal pump 4
It is arranged in oil pipeline 3, the output shaft of the driving axis connection diesel engine of centrifugal pump, diesel-driven single centrifugal pump work；Check
Valve 6 is arranged in the oil pipeline between centrifugal pump 4 and lubricating oil main pipe 2, for preventing lubricating oil adverse current；Two hand-operated valves point
It is not arranged in the oil pipeline at the both ends of centrifugal pump 4, the start and stop for manually operated critical oil supply system.In the present embodiment, from
Heart pump 4 uses self-priming centrifugal lubrication oil pump.The utility model is applied in turbine LP rotors, passes through electric hardwire side
Formula interlocked startup diesel engine and centrifugal pump, hardwire band throw pressing plate and move back pressing plate.
The present embodiment is to be applied to the implementation process in upper one 300MW unit of vapour, the major parameter of the unit：Main oil
Case maximum volume is 39 m3；Main oil pump is that centrifugal main shaft drags oil pump, rotating speed 3000r/min；AC Lub oil pump is
FLY type major axis grease pumps, rated power 30kW；DC lubricating is FLY type major axis grease pumps, and rated power is
30kW。
Because the centrifugal pump in the utility model is the ability interlocked startup when DC lubricating can not start, so centrifugation
Pump parameter is referred to DC lubricating selection, and specific targets parameter is as follows：The self-priming centrifugation of model 150YZ-A-36 types
Grease pump, flow 170m3/ h, lift 36m, rotating speed 1450r/min；Using 55kW diesel engines as the critical grease pump of accident
Driving power；Grease pump import and export pipeline, non-return valve and a diameter of 150mm of hand-operated valve.
The utility model can provide the lubrication pressure and oil mass needed for the type set lubricating oil system, therefore, work as unit
Appearance security personnel section, direct current section hinder dead electricity or AC Lub oil pump and DC lubricating while broken down for some reason, cause to hand over
During the problem of stream grease pump and DC lubricating can not start, direct interlocked startup accident centrifugal pump pump is turbine generator
Unit provides lubricating oil, it is ensured that unit can smoothly be shut down, and oil-break tile kilning will not occur and grind the serious accident of axle.In addition, such as
Fruit stationary rotor, AC Lub oil pump and DC lubricating still can not start, the critical grease pump of accident can continue to for
Each bearing of unit provides lubricating oil cooling, avoids bearing from occurring due to the accident of tile kilning is occurred by cylinder heat radiation.
Claims (3)
- A kind of 1. critical oil supply system of turbine LP rotors, it is characterised in that：Including passing through oil pipeline（3）It is arranged on master Fuel tank（1）With lubricating oil main pipe（2）Between centrifugal pump（4）, the centrifugal pump passes through the diesel engine that is attached thereto（7）Driving； Centrifugal pump（4）With lubricating oil main pipe（2）Between oil pipeline in be provided with the non-return valve for preventing lubricating oil adverse current（6）.
- A kind of 2. critical oil supply system of turbine LP rotors according to claim 1, it is characterised in that：Positioned at centrifugation Pump（4）One hand-operated valve is set respectively in the oil pipeline at both ends（5）.
- A kind of 3. critical oil supply system of turbine LP rotors according to claim 1, it is characterised in that：The centrifugation Pump（4）For self-priming centrifugal lubrication oil pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720620082.9U CN206753666U (en) | 2017-05-31 | 2017-05-31 | A kind of critical oil supply system of turbine LP rotors |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720620082.9U CN206753666U (en) | 2017-05-31 | 2017-05-31 | A kind of critical oil supply system of turbine LP rotors |
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| CN206753666U true CN206753666U (en) | 2017-12-15 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979038A (en) * | 2017-05-31 | 2017-07-25 | 河北冀研能源科学技术研究院有限公司 | A kind of critical oil supply system of turbine LP rotors |
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2017
- 2017-05-31 CN CN201720620082.9U patent/CN206753666U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979038A (en) * | 2017-05-31 | 2017-07-25 | 河北冀研能源科学技术研究院有限公司 | A kind of critical oil supply system of turbine LP rotors |
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| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 050000 2nd floor, Yingpan commercial and residential building, 129 Nanxiao street, Qiaoxi District, Shijiazhuang City, Hebei Province Patentee after: Hebei Jiantou energy science and Technology Research Institute Co.,Ltd. Address before: 050000 2nd floor, Yingpan commercial and residential building, 129 Nanxiao street, Qiaoxi District, Shijiazhuang City, Hebei Province Patentee before: HEBEI JI-YAN ENERGY SCIENCE AND TECHNOLOGY RESEARCH INSTITUTE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |