CN105019953A - Turbine oil supply system with positive displacement oil pump - Google Patents
Turbine oil supply system with positive displacement oil pump Download PDFInfo
- Publication number
- CN105019953A CN105019953A CN201510494624.8A CN201510494624A CN105019953A CN 105019953 A CN105019953 A CN 105019953A CN 201510494624 A CN201510494624 A CN 201510494624A CN 105019953 A CN105019953 A CN 105019953A
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- Prior art keywords
- oil pump
- oil
- steam turbine
- outlet
- fuel tank
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- 239000003921 oil Substances 0.000 title claims abstract description 132
- 239000010723 turbine oil Substances 0.000 title abstract 4
- 238000006073 displacement reaction Methods 0.000 title abstract 3
- 239000002828 fuel tank Substances 0.000 claims description 23
- 238000005461 lubrication Methods 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 15
- 230000001105 regulatory effect Effects 0.000 claims description 15
- 239000012530 fluid Substances 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000010736 steam turbine oil Substances 0.000 claims description 8
- 230000008676 import Effects 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Control Of Turbines (AREA)
Abstract
The invention relates to the field of turbines, and in particular to a turbine oil supply system with a positive displacement oil pump. The turbine oil supply system comprises a main loop, an auxiliary loop and a standby loop. The turbine oil supply system with the positive displacement oil pump has the self-suction capacity for sucking oil from an oil tank, the oil pump does not need to be provided with extra oil supply equipment, the responding speed is high, and the influence of air is avoided in the work process.
Description
Technical field
The present invention relates to steam turbine field, particularly relate to the steam turbine oil supply system with volumetric oil pump that a kind of high-pressure turbine uses.
Background technique
Along with the quick growth in market, recent year power station, the requirement for the safety in production of power station unit is more and more stricter.Heavily stressed load long-term work is carried under steam turbine high-temperature high pressure; need to rely on Protection System of Turbin to provide safety guarantee; wherein oil supply system is the basic guarantee of Protection System of Turbin; oil supply system must be under any circumstance; no matter namely normally run at unit; or in startup, shutdown, accident, even when power plant's ac power supply power-off, all should be able to fuel feeding be guaranteed.For the Turbo-generator Set of High Rotation Speed, even of short duration failure of oil feed, also major accident can be caused.Such as, the Babbitt of bearing melts because interrupting cooling, making steam turbine lose supporting, by making dynamic and static part, serious wearing and tearing occurring.If regulating system oil-break, whole unit is by out of hand.The current oil supply system suction capacity be operated under high temperature and high pressure environment is poor, and suction side is subject to the impact of air large.If import has air to bleed, will destroy the work of oil supply system, system cloud gray model will break down.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of suction capacity had from fuel tank oil suction, oil pump does not need other oil-servicing facilities, and reaction velocity is fast, and in the course of the work not by the steam turbine oil supply system with volumetric oil pump of the impact of air.
The present invention adopts following technological scheme, a kind of steam turbine oil supply system with volumetric oil pump, and it comprises major loop, secondary circuit and back-up circuit;
Described major loop comprises main oil pump, reducing gear, fuel tank, regulating system, spring reducing valve, high pressure spill valve, low pressure spill valve, oil cooler and bearing lubrication fluid supply apparatus;
Described main oil pump adopts gear pump;
Described main oil pump and speed reducer are in transmission connection, the filler opening of main oil pump is communicated with fuel tank, the oil outlet of main oil pump is communicated with regulating system, spring reducing valve, high pressure spill valve respectively, described spring reducing valve and regulating system be connected in parallel rear respectively with the import of oil cooler and the inlet communication of low pressure spill valve, the outlet of low pressure spill valve is communicated with fuel tank, the outlet of described oil cooler and the inlet communication of bearing lubrication fluid supply apparatus, the outlet of bearing lubrication fluid supply apparatus is communicated with fuel tank;
Described secondary circuit comprises steam turbine auxiliary oil pump, safety check;
Described steam turbine auxiliary oil pump and outside steam turbine are in transmission connection, the filler opening of steam turbine auxiliary oil pump is communicated with fuel tank, the oil outlet of steam turbine auxiliary oil pump and the inlet communication of safety check, the outlet of described safety check respectively with spring reducing valve and the import of regulating system shunt circuit, the inlet communication of high pressure spill valve;
Described back-up circuit comprises accident electric oil pump and direct current motor;
Described accident electric oil pump is connected with D. C motor driving, and the filler opening of accident electric oil pump is communicated with fuel tank, the oil outlet of accident electric oil pump and the inlet communication of oil cooler.
Working principle of the present invention is as follows:
Main oil pump is driven by speed reducer by main shaft, supplies whole oil of unit in normal operation.Main oil pump oil content is out two tunnels: a road supply regulating system; Bearing lubrication fluid supply apparatus after spring reducing valve step-down, then is sent to through oil cooler in one tunnel, and each bearing given by supply lubricant oil; Another road is through high-pressure overflow valve oil sump tank.High-pressure overflow valve and low pressure spill valve are used for making main oil pump to export and be sent to, and oil pressure that bearing lubrication fluid supply apparatus goes maintains in certain scope.Except main oil pump, be also provided with two oil pumps in system: one is auxiliary oil pump, it replaces whole oil of main oil pump supply unit when unit starting, shutdown; Another is emergency duty oil pump, and it is driven by direct current motor, in shutdown and jiggering process, when main oil pump and auxiliary oil pump all can not fuel feeding time, automatically start the accident electric oil pump of confession lubrication oil.Fuel tank is used for moisture, sludge, air etc. in oil storage and separating oil.
Beneficial effect of the present invention is as follows: the present invention has the suction capacity from the fuel tank oil suction be arranged in below it, oil pump does not need other oil-servicing facilities, and can ensure oil engine quick acting, reaction velocity is fast, and oil supply system is not in the course of the work by the impact of air
Accompanying drawing explanation
Figure 1 shows that the principle schematic with the steam turbine oil supply system of volumetric oil pump of the present invention;
Label declaration:
1-main oil pump; 2-reducing gear; 3-fuel tank; 4-regulating system; 5-spring reducing valve; 6-high pressure spill valve; 7-low pressure spill valve; 8-oil cooler; 9-steam turbine auxiliary oil pump; 10-safety check; 11-accident electric oil pump; 12-direct current motor; 13-bearing lubrication fluid supply apparatus.
Embodiment
By describing technology contents of the present invention, structure characteristics in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with mode of execution.
See Fig. 1, the present embodiment provides a kind of steam turbine oil supply system with volumetric oil pump, and it comprises major loop, secondary circuit and back-up circuit; Described major loop comprises main oil pump 1, reducing gear 2, fuel tank 3, regulating system 4, spring reducing valve 5, high pressure spill valve 6, low pressure spill valve 7, oil cooler 8 and bearing lubrication fluid supply apparatus 13; Described main oil pump 1 adopts gear pump; Described main oil pump 1 is in transmission connection with speed reducer 2, the filler opening of main oil pump 1 is communicated with fuel tank 3, the oil outlet of main oil pump 1 is communicated with regulating system 4, spring reducing valve 5, high pressure spill valve 6 respectively, described spring reducing valve 5 and regulating system 4 be connected in parallel rear respectively with the import of oil cooler 8 and the inlet communication of low pressure spill valve 7, the outlet of low pressure spill valve 7 is communicated with fuel tank 3, the outlet of described oil cooler 8 and the inlet communication of bearing lubrication fluid supply apparatus 13, the outlet of bearing lubrication fluid supply apparatus 13 is communicated with fuel tank 3;
Described secondary circuit comprises steam turbine auxiliary oil pump 9, safety check 10;
Described steam turbine auxiliary oil pump 9 is in transmission connection with outside steam turbine, the filler opening of steam turbine auxiliary oil pump 9 is communicated with fuel tank 3, the oil outlet of steam turbine auxiliary oil pump 9 and the inlet communication of safety check 10, the outlet of described safety check 10 respectively with spring reducing valve 5 and the import of regulating system 4 shunt circuit, the inlet communication of high pressure spill valve 6;
Described back-up circuit comprises accident electric oil pump 11 and direct current motor 12;
Described accident electric oil pump 11 is in transmission connection with direct current motor 12, and the filler opening of accident electric oil pump 11 is communicated with fuel tank 3, oil outlet and the inlet communication with oil cooler 8 of accident electric oil pump 11.
Main oil pump l is driven by speed reducer 2 by main shaft, supplies whole oil of unit in normal operation.Main oil pump 1 oil content is out two tunnels: a road supply regulating system 4; Bearing lubrication fluid supply apparatus 13 after spring reducing valve 5 step-down, then is sent to through oil cooler 8 in one tunnel, and each bearing given by supply lubricant oil; Another road is through high-pressure overflow valve 6 oil sump tank 3.High-pressure overflow valve 6 and low pressure spill valve 7 are used for making main oil pump 1 to export and be sent to, and oil pressure that bearing lubrication fluid supply apparatus 13 goes maintains in certain scope.Except main oil pump 1, be also provided with two oil pumps in system: one is steam-operating auxiliary oil pump 9, it is when unit starting, shutdown, replaces main oil pump 1 to supply whole oil of unit; Another is emergency duty oil pump 11, and it is driven by direct current motor 12, in shutdown and jiggering process, when main oil pump 1 and steam-operating auxiliary oil pump 9 all can not fuel feeding time, automatically start the accident electric oil pump 11 of confession lubrication oil.Fuel tank 3 is used for moisture, sludge, air etc. in oil storage and separating oil.
The foregoing is only the embodiment that the present invention has the steam turbine oil supply system of volumetric oil pump; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (1)
1. there is a steam turbine oil supply system for volumetric oil pump, it is characterized in that: comprise major loop, secondary circuit and back-up circuit, described major loop comprises main oil pump (1), reducing gear (2), fuel tank (3), regulating system (4), spring reducing valve (5), high pressure spill valve (6), low pressure spill valve (7), oil cooler (8) and bearing lubrication fluid supply apparatus (13), described main oil pump (1) adopts gear pump, described main oil pump (1) and speed reducer (2) are in transmission connection, the filler opening of main oil pump (1) is communicated with fuel tank (3), the oil outlet of main oil pump (1) respectively with regulating system (4), spring reducing valve (5), high pressure spill valve (6) is communicated with, described spring reducing valve (5) and regulating system (4) be connected in parallel rear respectively with the import of oil cooler (8) and the inlet communication of low pressure spill valve (7), the outlet of low pressure spill valve (7) is communicated with fuel tank (3), the outlet of described oil cooler (8) and the inlet communication of bearing lubrication fluid supply apparatus (13), the outlet of bearing lubrication fluid supply apparatus (13) is communicated with fuel tank (3), described secondary circuit comprises steam turbine auxiliary oil pump (9), safety check (10), described steam turbine auxiliary oil pump (9) and outside steam turbine are in transmission connection, the filler opening of steam turbine auxiliary oil pump (9) is communicated with fuel tank (3), the oil outlet of steam turbine auxiliary oil pump (9) and the inlet communication of safety check (10), the outlet of described safety check (10) respectively with spring reducing valve (5) and the import of regulating system (4) shunt circuit, the inlet communication of high pressure spill valve (6), described back-up circuit comprises accident electric oil pump (11) and direct current motor (12), described accident electric oil pump (11) and direct current motor (12) are in transmission connection, the filler opening of accident electric oil pump (11) is communicated with fuel tank (3), oil outlet and the inlet communication with oil cooler (8) of accident electric oil pump (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494624.8A CN105019953A (en) | 2015-08-13 | 2015-08-13 | Turbine oil supply system with positive displacement oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510494624.8A CN105019953A (en) | 2015-08-13 | 2015-08-13 | Turbine oil supply system with positive displacement oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105019953A true CN105019953A (en) | 2015-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510494624.8A Pending CN105019953A (en) | 2015-08-13 | 2015-08-13 | Turbine oil supply system with positive displacement oil pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066261A (en) * | 2020-07-30 | 2020-12-11 | 中广核核电运营有限公司 | Oil supplementing device of oil regulating system |
-
2015
- 2015-08-13 CN CN201510494624.8A patent/CN105019953A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112066261A (en) * | 2020-07-30 | 2020-12-11 | 中广核核电运营有限公司 | Oil supplementing device of oil regulating system |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151104 |