CN204851344U - Steam turbine oil feeding system with centrifugal oil pump - Google Patents
Steam turbine oil feeding system with centrifugal oil pump Download PDFInfo
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- CN204851344U CN204851344U CN201520607290.6U CN201520607290U CN204851344U CN 204851344 U CN204851344 U CN 204851344U CN 201520607290 U CN201520607290 U CN 201520607290U CN 204851344 U CN204851344 U CN 204851344U
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- oil
- oil pump
- pump
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- safety check
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- 239000003921 oil Substances 0.000 title claims abstract description 261
- 239000010736 steam turbine oil Substances 0.000 title claims abstract description 14
- 239000000945 filler Substances 0.000 claims description 36
- 239000010687 lubricating oil Substances 0.000 claims description 22
- 239000000314 lubricant Substances 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 239000002828 fuel tank Substances 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 9
- 239000000446 fuel Substances 0.000 description 5
- 238000005461 lubrication Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003134 recirculating effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 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
- -1 second safety check Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Control Of Turbines (AREA)
Abstract
The utility model relates to a steam turbine field especially relates to a steam turbine oil feeding system with centrifugal oil pump, and it includes the reserve return circuit of major loop, auxiliary circuit and alternating current -direct current, the utility model provides a pair of steam turbine oil feeding system with centrifugal oil pump simple structure, reliable operation both can obtain the required oil mass of quick operation, were unlikely to again to cause that oil pressure and the fierce of lubricated oil mass change.
Description
Technical field
The utility model relates to steam turbine field, particularly relates to a kind of steam turbine oil supply system with centrifugal oil pump.
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 power loss be operated under high temperature and high pressure environment is large, and need supporting speed reducer, there is certain mechanical loss, the reliability of work is lower will destroy the work of oil supply system, and system cloud gray model will break down.
Model utility content
In order to solve the problems of the technologies described above, the utility model provides that a kind of structure is simple, reliable operation, both can obtain the oil mass needed for quick acting, and be unlikely to again the steam turbine oil supply system with centrifugal oil pump causing the fierceness of oil pressure and lubricants capacity to change.
The utility model adopts following technological scheme, a kind of steam turbine oil supply system with centrifugal oil pump, and it comprises major loop, secondary circuit and alternating direct-current back-up circuit;
Described major loop comprises main oil pump, turbine spindle, I level oil gun, first safety check, II level oil gun, fuel tank, second safety check, oil cooler assembly, oil purifier, lubricant oil low oil pressure signal-transmitting machine, excess pressure valve, bearing oil supplying device, oil sump tank and regulating protecting system, described main oil pump adopts centrifugal pump, described main oil pump and turbine spindle are in transmission connection, the filler opening of main oil pump is communicated with the oil outlet of I level oil gun, the oil outlet of main oil pump is communicated with the filler opening of the first safety check, the oil outlet of the first safety check respectively with the filler opening of I level oil gun, the filler opening of II level oil gun and regulating protecting system are communicated with, I level oil gun and II level oil gun are arranged in fuel tank, the oil outlet of II level oil gun, second safety check, oil cooler assembly, oil purifier, bearing oil supplying device is communicated with successively, and the oil outlet of excess pressure valve is connected with oil sump tank, and the return opening of bearing oil supplying device is communicated with fuel tank, and lubricant oil low oil pressure signal-transmitting machine and excess pressure valve are arranged on the pipeline between oil purifier and bearing oil supplying device,
Described secondary circuit comprises ac high-voltage auxiliary oil pump and the 3rd safety check, described ac high-voltage auxiliary oil pump is connected with external ac power source electric transmission, the filler opening of ac high-voltage auxiliary oil pump is communicated with fuel tank, the oil outlet of ac high-voltage auxiliary oil pump is communicated with the filler opening of the 3rd safety check, the oil outlet of described 3rd safety check is communicated with the filler opening of I level oil gun, the filler opening of II level oil gun and regulating protecting system respectively, and described lubricant oil low oil pressure signal-transmitting machine is connected with ac high-voltage auxiliary oil pump electrical signal;
Described alternating direct-current back-up circuit comprises alternating direct-current low pressure lubricating oil pump and the 4th safety check; described alternating direct-current low pressure lubricating oil pump is connected with external ac power source or external dc power electric transmission; the filler opening of alternating direct-current low pressure lubricating oil pump is communicated with fuel tank; the oil outlet of alternating direct-current low pressure lubricating oil pump is communicated with the filler opening of the 4th safety check; the oil outlet of described 4th safety check is communicated with the filler opening of I level oil gun, the filler opening of II level oil gun and regulating protecting system respectively, and described lubricant oil low oil pressure signal-transmitting machine is connected with alternating direct-current low pressure lubricating oil pump electrical signal.
Described oil cooler assembly comprises at least 3 oil coolers, and described oil cooler is arranged in parallel.
The working principle with the steam turbine oil supply system of centrifugal oil pump of the present utility model is as follows:
During normal operation, supply using of unit by main oil pump oily.The high pressure oil of main oil pump oil outlet is divided into two-way after the first safety check: using of a road supply regulating protecting system is oily; Another road is divided and is clipped to I level oil gun and II level oil gun, as the power oil of oil gun.Wherein, the fuel-displaced of I level oil gun is sent to main oil pump import, and maintains normal oil pressure in main oil pump inlet.The fuel-displaced of II level oil gun is sent to bearing oil supplying device through the second safety check, oil cooler assembly, oil purifier, lubricant oil low oil pressure signal-transmitting machine, excess pressure valve.Excess pressure valve has the effect automatically regulating recirculating oil quantity, and it makes lubricant oil oil pressure remain in the scope of normal oil pressure.Lubricant oil low oil pressure signal-transmitting machine sends alarm signal when Lubricating Oil forces down in threshold value, and according to the degree that oil pressure reduces, startup ac high-voltage auxiliary oil pump, alternating direct-current low pressure lubricating oil pump carry out fuel feeding automatically.Ac high-voltage auxiliary oil pump, when unit starting, replaces main oil pump fuel feeding; During normal operation, as the emergency bearing oil pump of main oil pump.Alternating direct-current low pressure lubricating oil pump, before unit starting ac high-voltage auxiliary oil pump, is first opened, and is used for driving the air in low pressure pipeline and each adjustment member away; During shutdown, supply lubrication oil.When lose AC power, started by DC electrical source, supply lubrication oil.
The beneficial effects of the utility model are as follows: structure is simple, and power loss is little, does not need supporting speed reducer, decrease mechanical loss, improve the reliability of work, reliable operation, both can obtain the oil mass needed for quick acting, and be unlikely to again to cause the fierceness of oil pressure and lubricants capacity to change.
Accompanying drawing explanation
Figure 1 shows that the principle schematic with the steam turbine oil supply system of centrifugal oil pump of the present utility model;
Label declaration:
1-main oil pump, 2-turbine spindle, 3-I level oil gun, 4-first safety check, 5-II level oil gun, 6-fuel tank, 7-second safety check, 8-oil cooler assembly, 9-oil purifier, 10-lubricant oil low oil pressure signal-transmitting machine, 11-excess pressure valve, 12-bearing oil supplying device, 13-oil sump tank, 14-ac high-voltage auxiliary oil pump, 15-the 3rd safety check, 16-alternating direct-current low pressure lubricating oil pump, 17-the 4th safety check, 18-regulating protecting system.
Embodiment
By describing technology contents of the present utility model, 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 centrifugal oil pump, and it comprises major loop, secondary circuit and alternating direct-current back-up circuit;
Described major loop comprises main oil pump 1, turbine spindle 2, I level oil gun 3, first safety check 4, II level oil gun 5, fuel tank 6, second safety check 7, oil cooler assembly 8, oil purifier 9, lubricant oil low oil pressure signal-transmitting machine 10, excess pressure valve 11, bearing oil supplying device 12, oil sump tank 13 and regulating protecting system 18, described main oil pump 1 adopts centrifugal pump, described main oil pump 1 is in transmission connection with turbine spindle 2, the filler opening of main oil pump 1 is communicated with the oil outlet of I level oil gun 3, the oil outlet of main oil pump 1 is communicated with the filler opening of the first safety check 4, the oil outlet of the first safety check 4 respectively with the filler opening of I level oil gun 3, filler opening and the regulating protecting system 18 of II level oil gun 5 are communicated with, and I level oil gun 3 and II level oil gun 5 are arranged in fuel tank 6, the oil outlet of II level oil gun 5, second safety check 7, oil cooler assembly 8, oil purifier 9, bearing oil supplying device 12 is communicated with successively, the oil outlet of excess pressure valve 11 is connected with oil sump tank 13, the return opening of bearing oil supplying device 12 is communicated with fuel tank 6, and lubricant oil low oil pressure signal-transmitting machine 10 and excess pressure valve 11 are arranged on the pipeline between oil purifier 9 and bearing oil supplying device 12,
Described secondary circuit comprises ac high-voltage auxiliary oil pump 14 and the 3rd safety check 15, described ac high-voltage auxiliary oil pump 14 is connected with external ac power source electric transmission, the filler opening of ac high-voltage auxiliary oil pump 14 is communicated with fuel tank 6, the oil outlet of ac high-voltage auxiliary oil pump 14 is communicated with the filler opening of the 3rd safety check 15, the oil outlet of described 3rd safety check 15 is communicated with the filler opening of I level oil gun 3, the filler opening of II level oil gun 5 and regulating protecting system 18 respectively, and described lubricant oil low oil pressure signal-transmitting machine 10 is connected with ac high-voltage auxiliary oil pump 14 electrical signal;
Described alternating direct-current back-up circuit comprises alternating direct-current low pressure lubricating oil pump 16 and the 4th safety check 17, described alternating direct-current low pressure lubricating oil pump 16 is connected with external ac power source or external dc power electric transmission, the filler opening of alternating direct-current low pressure lubricating oil pump 16 is communicated with fuel tank 6, the oil outlet of alternating direct-current low pressure lubricating oil pump 16 is communicated with the filler opening of the 4th safety check 17, the oil outlet of described 4th safety check 17 respectively with the filler opening of I level oil gun 3, filler opening and the regulating protecting system 18 of II level oil gun 5 are communicated with, described lubricant oil low oil pressure signal-transmitting machine 10 is connected with alternating direct-current low pressure lubricating oil pump 16 electrical signal.
Described oil cooler assembly 8 comprises at least 3 oil coolers, and described oil cooler is arranged in parallel.
The working principle with the steam turbine oil supply system of centrifugal oil pump is as follows:
During normal operation, supply using of unit by main oil pump 1 oily.The high pressure oil of main oil pump 1 oil outlet is divided into two-way after the first safety check 4: using of a road supply regulating protecting system 18 is oily; Another road is divided and is clipped to I level oil gun 3 and II level oil gun 5, as the power oil of oil gun.Wherein, the fuel-displaced of I level oil gun 3 is sent to main oil pump 1 import, and maintains normal oil pressure in main oil pump 1 inlet.The fuel-displaced of II level oil gun 5 is sent to bearing oil supplying device 12 through the second safety check 7, oil cooler assembly 8, oil purifier 9, lubricant oil low oil pressure signal-transmitting machine 10, excess pressure valve 11.Excess pressure valve 11 has the effect automatically regulating recirculating oil quantity, and it makes lubricant oil oil pressure remain in the scope of normal oil pressure.Lubricant oil low oil pressure signal-transmitting machine 10 sends alarm signal when Lubricating Oil forces down in threshold value, and according to the degree that oil pressure reduces, startup ac high-voltage auxiliary oil pump 14, alternating direct-current low pressure lubricating oil pump 16 carry out fuel feeding automatically.Ac high-voltage auxiliary oil pump 14, when unit starting, replaces main oil pump 1 fuel feeding; During normal operation, as the emergency bearing oil pump of main oil pump 1.Alternating direct-current low pressure lubricating oil pump 16, before unit starting ac high-voltage auxiliary oil pump 14, is first opened, and is used for driving the air in low pressure pipeline and each adjustment member away; During shutdown, supply lubrication oil.When lose AC power, started by DC electrical source, supply lubrication oil.
The foregoing is only the embodiment that the utility model has the steam turbine oil supply system of centrifugal oil pump; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification 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 utility model.
Claims (2)
1. there is a steam turbine oil supply system for centrifugal oil pump, it is characterized in that: it comprises major loop, secondary circuit and alternating direct-current back-up circuit;
Described major loop comprises main oil pump (1), turbine spindle (2), I level oil gun (3), first safety check (4), II level oil gun (5), fuel tank (6), second safety check (7), oil cooler assembly (8), oil purifier (9), lubricant oil low oil pressure signal-transmitting machine (10), excess pressure valve (11), bearing oil supplying device (12), oil sump tank (13) and regulating protecting system (18), described main oil pump (1) adopts centrifugal pump, described main oil pump (1) and turbine spindle (2) are in transmission connection, the filler opening of main oil pump (1) is communicated with the oil outlet of I level oil gun (3), the oil outlet of main oil pump (1) is communicated with the filler opening of the first safety check (4), the oil outlet of the first safety check (4) respectively with the filler opening of I level oil gun (3), the filler opening of II level oil gun (5) and regulating protecting system (18) are communicated with, I level oil gun (3) and II level oil gun (5) are arranged in fuel tank (6), the oil outlet of II level oil gun (5), second safety check (7), oil cooler assembly (8), oil purifier (9), bearing oil supplying device (12) is communicated with successively, the oil outlet of excess pressure valve (11) is connected with oil sump tank (13), the return opening of bearing oil supplying device (12) is communicated with fuel tank (6), and lubricant oil low oil pressure signal-transmitting machine (10) and excess pressure valve (11) are arranged on the pipeline between oil purifier (9) and bearing oil supplying device (12),
Described secondary circuit comprises ac high-voltage auxiliary oil pump (14) and the 3rd safety check (15), described ac high-voltage auxiliary oil pump (14) is connected with external ac power source electric transmission, the filler opening of ac high-voltage auxiliary oil pump (14) is communicated with fuel tank (6), the oil outlet of ac high-voltage auxiliary oil pump (14) is communicated with the filler opening of the 3rd safety check (15), the oil outlet of described 3rd safety check (15) respectively with the filler opening of I level oil gun (3), the filler opening of II level oil gun (5) and regulating protecting system (18) are communicated with, described lubricant oil low oil pressure signal-transmitting machine (10) is connected with ac high-voltage auxiliary oil pump (14) electrical signal,
Described alternating direct-current back-up circuit comprises alternating direct-current low pressure lubricating oil pump (16) and the 4th safety check (17), described alternating direct-current low pressure lubricating oil pump (16) is connected with external ac power source or external dc power electric transmission, the filler opening of alternating direct-current low pressure lubricating oil pump (16) is communicated with fuel tank (6), the oil outlet of alternating direct-current low pressure lubricating oil pump (16) is communicated with the filler opening of the 4th safety check (17), the oil outlet of described 4th safety check (17) respectively with the filler opening of I level oil gun (3), the filler opening of II level oil gun (5) and regulating protecting system (18) are communicated with, described lubricant oil low oil pressure signal-transmitting machine (10) is connected with alternating direct-current low pressure lubricating oil pump (16) electrical signal.
2. the steam turbine oil supply system with centrifugal oil pump according to claim 1, is characterized in that: described oil cooler assembly (8) comprises at least 3 oil coolers, and described oil cooler is arranged in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520607290.6U CN204851344U (en) | 2015-08-13 | 2015-08-13 | Steam turbine oil feeding system with centrifugal oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520607290.6U CN204851344U (en) | 2015-08-13 | 2015-08-13 | Steam turbine oil feeding system with centrifugal oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851344U true CN204851344U (en) | 2015-12-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520607290.6U Expired - Fee Related CN204851344U (en) | 2015-08-13 | 2015-08-13 | Steam turbine oil feeding system with centrifugal oil pump |
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| Country | Link |
|---|---|
| CN (1) | CN204851344U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545382A (en) * | 2016-01-08 | 2016-05-04 | 湖南创元铝业有限公司 | Lubricating system for steam turbine of thermal generator set |
| 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 |
-
2015
- 2015-08-13 CN CN201520607290.6U patent/CN204851344U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545382A (en) * | 2016-01-08 | 2016-05-04 | 湖南创元铝业有限公司 | Lubricating system for steam turbine of thermal generator set |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20170813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |