CN109356879B - Shaft seal type nuclear main pump oil lubrication system - Google Patents
Shaft seal type nuclear main pump oil lubrication system Download PDFInfo
- Publication number
- CN109356879B CN109356879B CN201811515175.0A CN201811515175A CN109356879B CN 109356879 B CN109356879 B CN 109356879B CN 201811515175 A CN201811515175 A CN 201811515175A CN 109356879 B CN109356879 B CN 109356879B
- Authority
- CN
- China
- Prior art keywords
- oil
- pipeline
- pump
- oil tank
- tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000005461 lubrication Methods 0.000 title claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 100
- 239000010705 motor oil Substances 0.000 claims abstract description 18
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000010687 lubricating oil Substances 0.000 abstract description 7
- 239000002826 coolant Substances 0.000 abstract description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/06—Lubrication
- F04D29/061—Lubrication especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/16—Pumping installations or systems with storage reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/046—Bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a shaft seal type nuclear main pump oil lubrication system which can lubricate friction pieces of a bearing and reduce the temperature of the friction pieces. The second oil pump pumps out the lubricating oil from the first oil feeding tank, enters the surface of the pad of the thrust bearing through the second pipeline, lubricates the bearing, and sends the lubricated high-temperature oil to the heat exchanger and the second motor oil tank through the third oil pump through the fifth pipeline and the third pipeline respectively, the coolant of the heat exchanger is conveyed by the seventh pipeline and the eighth pipeline, and the cooled lubricating oil returns to the second oil feeding tank through the sixth pipeline. The first oil pump conveys oil to the first motor oil tank through the first pipeline, so that the purpose of lubricating the pump shaft is achieved. Through the oil circuit circulation, lubrication can be provided for the thrust bearing and the motor shaft, and excessive heat is taken away.
Description
Technical field:
the invention relates to a shaft seal type nuclear main pump oil lubrication system.
The background technology is as follows:
the reactor coolant pump is one of the most important functional components of a nuclear power plant. The nuclear main pump is in a high-temperature, high-pressure and strong-radiation environment for a long time, so that the design and manufacturing requirements on the nuclear main pump are extremely high, and the reasoning bearing serving as one of key components of the nuclear main pump is the only component for balancing the axial force of the nuclear main pump, and directly influences the stable operation and the service life of the nuclear main pump.
At present, the lubrication mode of the thrust bearing is to install the bearing in an oil tank or the self-lubrication mode of the bearing, and the two modes have the problems of incomplete lubrication and poor regulation and control of the oil temperature, so that the service life of the bearing is influenced.
The invention comprises the following steps:
the invention aims to provide a shaft seal type nuclear main pump oil lubrication system which can lubricate friction pieces of a bearing and reduce the temperature of the friction pieces. The technical scheme of the invention is as follows: a nuclear main pump oil lubrication system is characterized in that a lower oil tank (1) is arranged at the lower part of a nuclear main pump, a first upper oil tank (4) is arranged above the nuclear main pump, a second upper oil tank (16) is arranged at the symmetrical position of the first upper oil tank (4), a first motor oil tank (7) and a second motor oil tank (8) are arranged right above the first upper oil tank (4), the lower oil tank (1) is connected with the first motor oil tank (7) through a first pipeline (6), a first oil pump (2) is arranged at the middle position of the first pipeline (6), the first upper oil tank (4) is connected with a thrust bearing (14) through a second pipeline (5), a second oil pump (3) is arranged at the middle position of the second pipeline (5), the thrust bearing (14) is arranged on a pump shaft (19), the thrust bearing (14) is positioned between the first upper oil tank and the second upper oil tank, a third oil pump (15) is arranged at the lower end of the pump shaft (19), the third oil pump is connected with the second motor oil tank (8) through a third pipeline (10), the second upper oil tank (8) is connected with a third pipeline (16) through a third pipeline (9), the third pipeline (12) is connected with a fifth oil pump (12) through a third pipeline (12), the fifth pipeline (12) is connected with a fifth oil pump (12), the seventh pipeline (11) and the eighth pipeline (13) are connected with a cooling water pipeline of the nuclear power station.
Working principle:
according to the invention, a lower oil tank, a first upper oil tank, a second upper oil tank, a first motor oil tank and a second motor oil tank are arranged on a nuclear main pump, a first pipeline and a first oil pump are arranged between the lower oil tank and the motor oil tank, a second pipeline and a second oil pump are arranged between the first upper oil tank and a thrust bearing, the thrust bearing is arranged on a pump shaft, a third oil pump is arranged on the pump shaft and is connected with the second motor oil tank through the third pipeline, a fourth pipeline is arranged between the second motor oil tank and the second upper oil tank, a fifth pipeline is arranged between the third oil pump and a heat exchanger, the heat exchanger is connected with the second upper oil tank through a sixth pipeline, and a seventh pipeline and an eighth pipeline are connected with a cooling water system of a power station.
The second oil pump pumps out the lubricating oil from the first oil feeding tank, enters the surface of the pad of the thrust bearing through the second pipeline, lubricates the bearing, and sends the lubricated high-temperature oil to the heat exchanger and the second motor oil tank through the third oil pump through the fifth pipeline and the third pipeline respectively, the coolant of the heat exchanger is conveyed by the seventh pipeline and the eighth pipeline, and the cooled lubricating oil returns to the second oil feeding tank through the sixth pipeline. The first oil pump conveys oil to the first motor oil tank through the first pipeline, so that the purpose of lubricating the pump shaft is achieved. Through the oil circuit circulation, lubrication can be provided for the thrust bearing and the motor shaft, and excessive heat is taken away.
The technical effects are as follows:
the oil in the first upper oil tank is conveyed to the tile surface of the thrust bearing through the second oil pump, an oil film is established for lubrication, the use efficiency of lubricating oil can be improved, the use amount of the lubricating oil is reduced, the equipment is more compact, and the lubrication efficiency is improved.
The third oil pump is used for conveying the high-temperature oil after lubricating the bearing into the heat exchanger for cooling, so that the heat generated in the use process of the bearing can be effectively reduced, and the service life of the bearing bush of the bearing is prolonged.
The lower oil tank lubricating oil is conveyed to the pump shaft through the first oil pump, accessory parts on the pump shaft can be lubricated, the working efficiency of the whole pump unit is improved, and useless friction loss is reduced.
Through the circulating connection of the three main parts, the oil lubrication system arranged on the main pump body can lubricate the thrust bearing and the pump shaft of the main stress part on the main pump and reduce the heat generated by the thrust bearing due to rotary friction, so that the service performance and the service life of the bearing are effectively improved, the safety of stopping and braking under the abnormal working condition of the main pump is ensured, the risk of safely stopping and piling under the accident working condition is further reduced, namely, the risk of not damaging a nuclear reactor is ensured, and the safety factor of the nuclear power station is effectively improved. In the aspect of economic benefit, the service life of the thrust bearing is prolonged, the maintenance cost of the nuclear power station is reduced, the maintenance time is saved, and the benefit is increased for the nuclear power station. The oil lubrication system can provide constant temperature lubrication oil for the thrust bearing, provide lubrication between friction members of the thrust bearing, and reduce the temperature of the components.
Description of the drawings:
FIG. 1 is a schematic diagram of the present invention
The specific embodiment is as follows:
as shown in fig. 1, in the shaft seal type nuclear main pump oil lubrication system, a lower oil tank 1 is installed at the lower part of a nuclear main pump, a first upper oil tank 4 is installed above the nuclear main pump, a second upper oil tank 16 is installed at the symmetrical position of the first upper oil tank 4, a first electric oil tank 7 and a second electric oil tank 8 are installed right above the first upper oil tank 4, the lower oil tank 1 is connected with the first electric oil tank 7 through a first pipeline 6, a first oil pump 2 is installed at the middle position of the first pipeline 6, the first upper oil tank 4 is connected with a thrust bearing 14 through a second pipeline 5, a second oil pump 3 is installed at the middle position of the second pipeline 5, the thrust bearing 14 is installed on a pump shaft 19 and is located between the first upper oil tank and the second upper oil tank, a third oil pump 15 is installed at the lower end of the pump shaft 19, the third oil pump is connected with the second electric oil tank 8 through a third pipeline 10, the second electric oil tank 8 is connected with the second upper oil tank 16 through a fourth pipeline 9, the third oil pump 15 is connected with a heat exchanger 12 through a fifth pipeline 18, the heat exchanger 12 is connected with the second upper oil tank 16 through a seventh pipeline 17, and a cooling pipeline 11 is connected with a eighth pipeline 13.
Claims (1)
1. A shaft seal type nuclear main pump oil lubrication system is characterized in that: a lower oil tank (1) is arranged at the lower part of a nuclear main pump, a first upper oil tank (4) is arranged above the nuclear main pump, a second upper oil tank (16) is arranged at the symmetrical position of the first upper oil tank (4), a first motor oil tank (7) and a second motor oil tank (8) are arranged right above the first upper oil tank (4), the lower oil tank (1) is connected with the first motor oil tank (7) through a first pipeline (6), a first oil pump (2) is arranged at the middle position of the first pipeline (6), the first upper oil tank (4) is connected with a thrust bearing (14) through a second pipeline (5), a second oil pump (3) is arranged at the middle position of the second pipeline (5), the thrust bearing (14) is arranged on a pump shaft (19), the thrust bearing (14) is positioned between the first upper oil tank and the second upper oil tank, a third oil pump (15) is arranged at the lower end of the pump shaft (19), the third oil pump is connected with the second motor oil tank (8) through a third pipeline (10), the second motor oil tank (8) is connected with the second upper oil tank (16) through a fourth pipeline (9), the third pipeline (15) is connected with a fifth oil pump (12) through a heat exchanger (12), the fifth oil pump (16) is connected with a sixth pipeline (12), the seventh pipeline (11) and the eighth pipeline (13) are connected with a cooling water pipeline of the nuclear power station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515175.0A CN109356879B (en) | 2018-12-12 | 2018-12-12 | Shaft seal type nuclear main pump oil lubrication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515175.0A CN109356879B (en) | 2018-12-12 | 2018-12-12 | Shaft seal type nuclear main pump oil lubrication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109356879A CN109356879A (en) | 2019-02-19 |
| CN109356879B true CN109356879B (en) | 2024-04-05 |
Family
ID=65330565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811515175.0A Active CN109356879B (en) | 2018-12-12 | 2018-12-12 | Shaft seal type nuclear main pump oil lubrication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109356879B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54138930A (en) * | 1978-04-19 | 1979-10-27 | Fuji Electric Co Ltd | Lubricating device for bearing of valve type tubular hydraulic turbine generator |
| CN202326199U (en) * | 2011-11-30 | 2012-07-11 | 重庆水泵厂有限责任公司 | Pressure oil supply forced lubrication device for vertical pump |
| CN206542280U (en) * | 2016-12-27 | 2017-10-03 | 湘潭电机股份有限公司 | A kind of pressurized-water reactor nuclear power plant Main Coolant pump motor |
| CN207095658U (en) * | 2017-06-23 | 2018-03-13 | 杭州力源发电设备有限公司 | A kind of hydraulic turbine banel bearing shuts down the measurement apparatus of oil level |
| CN207406529U (en) * | 2017-10-25 | 2018-05-25 | 福建福清核电有限公司 | A kind of main pump bearing chamber lubrication oil circulation circuit |
| CN209228682U (en) * | 2018-12-12 | 2019-08-09 | 哈尔滨电气动力装备有限公司 | Axle envelope formula core main pump oil lubrication system |
-
2018
- 2018-12-12 CN CN201811515175.0A patent/CN109356879B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54138930A (en) * | 1978-04-19 | 1979-10-27 | Fuji Electric Co Ltd | Lubricating device for bearing of valve type tubular hydraulic turbine generator |
| CN202326199U (en) * | 2011-11-30 | 2012-07-11 | 重庆水泵厂有限责任公司 | Pressure oil supply forced lubrication device for vertical pump |
| CN206542280U (en) * | 2016-12-27 | 2017-10-03 | 湘潭电机股份有限公司 | A kind of pressurized-water reactor nuclear power plant Main Coolant pump motor |
| CN207095658U (en) * | 2017-06-23 | 2018-03-13 | 杭州力源发电设备有限公司 | A kind of hydraulic turbine banel bearing shuts down the measurement apparatus of oil level |
| CN207406529U (en) * | 2017-10-25 | 2018-05-25 | 福建福清核电有限公司 | A kind of main pump bearing chamber lubrication oil circulation circuit |
| CN209228682U (en) * | 2018-12-12 | 2019-08-09 | 哈尔滨电气动力装备有限公司 | Axle envelope formula core main pump oil lubrication system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109356879A (en) | 2019-02-19 |
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