CN114233862A - Double-floater oil tank for sealing oil of generator - Google Patents
Double-floater oil tank for sealing oil of generator Download PDFInfo
- Publication number
- CN114233862A CN114233862A CN202111354243.1A CN202111354243A CN114233862A CN 114233862 A CN114233862 A CN 114233862A CN 202111354243 A CN202111354243 A CN 202111354243A CN 114233862 A CN114233862 A CN 114233862A
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- 238000007789 sealing Methods 0.000 title claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims abstract description 6
- 238000002955 isolation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 2
- 238000007667 floating Methods 0.000 abstract description 10
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/20—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers with valves controlled by floats
- F16T1/22—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers with valves controlled by floats of closed-hollow-body type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/38—Component parts; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16T—STEAM TRAPS OR LIKE APPARATUS FOR DRAINING-OFF LIQUIDS FROM ENCLOSURES PREDOMINANTLY CONTAINING GASES OR VAPOURS
- F16T1/00—Steam traps or like apparatus for draining-off liquids from enclosures predominantly containing gases or vapours, e.g. gas lines, steam lines, containers
- F16T1/38—Component parts; Accessories
- F16T1/48—Monitoring arrangements for inspecting, e.g. flow of steam and steam condensate
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Float Valves (AREA)
Abstract
The invention discloses a generator sealing oil double-floater oil tank which comprises a floater oil tank, a floating ball valve and a bypass system, wherein the top of the floater oil tank is connected with an oil inlet main path, the floating ball valve is arranged in the floater oil tank and is connected with the bypass system through an oil outlet main path, an oil inlet valve of the floater oil tank and an oil outlet valve of an overflow isolating valve are respectively arranged on the oil inlet main path and the oil outlet main path, and a bypass oil outlet valve is arranged on the bypass system; the auxiliary oil drainage mechanism comprises a float oil valve and a float ball support, the float oil valve is arranged in a float oil tank, the arrangement height of the float oil valve is higher than that of a float ball valve, an oil outlet pipeline of the float oil valve is communicated with the oil outlet main pipeline, and a float ball of the float oil valve is placed on the float ball support and is lifted up through the float ball support; when the oil level of the float oil tank is higher than the height of a float ball of the float oil valve, the float oil valve acts to assist oil drainage and triggers the high-level alarm module to alarm.
Description
Technical Field
The invention relates to the technical field of generator sealing, in particular to a double-floater oil tank for generator sealing oil.
Background
The generator sealing oil float oil tank is used as an important component of a generator hydrogen sealing system, the stability of the liquid level of the generator sealing oil float oil tank has important significance for the safe operation of a generator, and the liquid level adjustment of the generator sealing oil float oil tank generally depends on a mechanical ball float valve inside the oil tank to automatically adjust the opening according to the size of liquid level buoyancy to keep the stability of the liquid level. For a large-scale generator, how to stably control a sealing oil system is a very important problem, if the generator and the accessory systems thereof are likely to be full of oil due to improper control, fatal damage is caused to the generator in operation, and at the present stage, a floater oil tank system is a simple system for maintaining stable oil filling of the sealing oil system of the generator and can work well, but the reliability of the system can not meet the requirement gradually and well along with the improvement of the unit value.
The generator sealing oil system is very important for a generator hydrogen cooling unit, but is easy to be abnormal. In recent years, in domestic power plants, the mechanical float valve of a sealing oil float oil tank of a generator is blocked for many times, so that the safety accidents of generator oil inlet or shutdown caused by large-amount hydrogen leakage of the generator are caused, the safety accidents of fire, explosion and the like are easy to happen, and great potential safety hazards exist. In the recent repair and debugging process of the No. 2 machine in our factory, the generator is fed with oil, and the oil is fed into the generator due to the fact that a floating ball valve connecting rod in a float oil tank of a sealing oil system is disconnected and the floating ball valve fails to close and cannot be opened. Similar things happen during the operation of the first-class aircraft in recent years, the recovery time of the unit is delayed due to power generation and oil feeding, a lot of additional work is brought, and on the other hand, great hidden dangers are brought to normal operation of the unit.
Disclosure of Invention
The invention aims to solve the technical problem of providing a generator sealing oil double-floater oil tank which is simple in structure and can effectively improve the operation reliability of a floater oil tank, aiming at the defects in the prior art.
The invention aims to complete the technical scheme that the generator sealed oil double-floater oil tank comprises a floater oil tank, a floating ball valve and a bypass system, wherein the top of the floater oil tank is connected with an oil inlet main path, the floating ball valve is arranged in the floater oil tank and is connected with the bypass system through an oil outlet main path, an oil inlet valve and an oil outlet valve of the floater oil tank are respectively arranged on the oil inlet main path and the oil outlet main path, and a bypass oil outlet valve is arranged on the bypass system; in addition, the double-float oil tank also comprises an auxiliary oil drainage mechanism and a high-level alarm module, wherein the auxiliary oil drainage mechanism comprises a float oil valve and a float ball bracket, the float oil valve is arranged in the float oil tank, the arrangement height of the float oil valve is higher than that of the float ball valve, an oil outlet pipeline of the float oil valve is communicated with the oil outlet main pipeline, and a float ball of the float oil valve is placed on the float ball bracket and is lifted up by the float ball bracket; when the oil level of the float oil tank is higher than the height of a float ball of the float oil valve, the float oil valve acts to assist oil drainage and triggers the high-level alarm module to alarm.
Further, this two float oil tanks of generator sealing oil still includes urgent overflow discharge system, urgent overflow discharge system is including supporting overflow flash tank and the overflow pipeline that sets up, overflow pipeline intercommunication sets up and is provided with the overflow isolation valve on this overflow pipeline on the float oil tank is close to the position at top, be provided with the second ball-cock assembly in the overflow flash tank, the oil outlet pipe and the bypass system intercommunication of this second ball-cock assembly are in order to carry out quick draining, be provided with overflow flash tank oil valve on the oil outlet pipe of second ball-cock assembly.
Furthermore, an overflow flash tank oil inlet pipeline communicated with the oil inlet main pipeline is arranged on the overflow flash tank, and an overflow flash tank oil inlet valve is arranged on the overflow flash tank oil inlet pipeline; and an overflow flash tank oil discharge pipeline with an overflow flash tank oil discharge valve is arranged at the bottom of the overflow flash tank.
Furthermore, the top and the bottom of the float oil tank are respectively provided with an exhaust pipeline and an oil drain pipeline, and the exhaust pipeline and the oil drain pipeline are respectively provided with a float oil tank exhaust valve and a float oil tank oil drain valve.
Further, the floater support includes the pole setting of vertical setting and sets firmly the platform of placing that is used for placing float oil valve floater on this pole setting, the pole setting is height-adjustable's column structure.
The invention has the beneficial technical effects that: the float oil valve is additionally provided with the float oil valve at a high position on the basis of the original single-float ball valve float oil tank, and a float ball of the float oil valve is too high through the float ball support, so that the alarm and the quick oil drainage can be carried out when the oil level is high, and the oil level is controlled at a high limit position; in addition, the arrangement of the overflow flash tank, the pipeline and the related valves greatly optimizes the original adjusting mode, thereby effectively ensuring the operation reliability of the float oil tank.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the prior art;
fig. 2 is a schematic view of the overall structure of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood by those skilled in the art, the present invention is further described with reference to the accompanying drawings and examples.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "inside", "outside", "lateral", "vertical", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, and thus, should not be construed as limiting the present invention.
The structure of the existing float oil tank is shown in figure 1, and mainly comprises an oil tank capable of controlling oil level, a float valve group and a bypass system. When the oil level of the float oil tank is controlled by opening and closing the float valve, the bypass outlet valve is closed. When the oil level is high, the float valve is opened, and when the oil level is low, the float valve is closed, so that smooth oil return on the inner side of the sealing oil is ensured. If the float valve connecting rod drops or is jammed, the float oil tank may be full of oil, and then the generator is led to take oil.
As shown in FIG. 2, in order to avoid the danger of high oil level caused by the failure of the float valve, when the oil level of the float oil tank is high, an alarm can be given and oil can be drained quickly, and the oil level is controlled at a high limit position. The invention makes the following improvements on the basis of the prior art: the invention relates to a generator sealing oil double-float oil tank which comprises a float oil tank 1, a float ball valve 2 and a bypass system 3, wherein the top of the float oil tank 1 is connected with an oil inlet main path 11, the float ball valve 2 is arranged in the float oil tank 1 and is connected with the bypass system 3 through an oil outlet main path 12, the oil inlet main path 11 and the oil outlet main path 12 are respectively provided with a float oil tank oil inlet valve 13 and an overflow isolation valve oil outlet valve 14, and the bypass system 3 is provided with a bypass oil outlet valve 31; in addition, this two float tanks still includes supplementary draining mechanism and high-order alarm module, supplementary draining mechanism includes float oil valve 4 and floater support 5, float oil valve 4 sets up in float tank 1 and the arrangement height that arranges of float oil valve 4 is higher than the arrangement height of float valve 2, float oil valve 4's oil outlet pipe with go out oil main road 12 intercommunication, float oil valve 4's floater is placed on floater support 5 and is lifted in order to break away from normal float tank oil level through floater support 5, floater support 5 includes the vertical rod of vertical setting and sets firmly the platform of placing that is used for placing float oil valve floater in this vertical rod, the vertical rod is height-adjustable's columnar structure, can make through the vertical rod height of preconditioning to place the platform and be in different heights, thereby adjust the lifting height of floater. When the oil level of the float oil tank 1 is higher than the height of a float ball of the float oil valve 4, the float oil valve 4 acts to perform auxiliary oil drainage, and meanwhile, the action position of the float oil valve 4 can be used as a triggering condition of the high limit alarm of the float oil tank 1, so that the alarm module is triggered to alarm. The top and the bottom of the float oil tank 1 are respectively provided with an exhaust pipeline and an oil drain pipeline, and the exhaust pipeline and the oil drain pipeline are respectively provided with a float oil tank exhaust valve 15 and a float oil tank oil drain valve 16.
Referring to fig. 2, the generator sealing oil double-float oil tank further includes an emergency overflow discharge system 6, the emergency overflow discharge system 6 includes an overflow flash tank 61 and an overflow pipeline 62 which are arranged in a matched manner, the overflow pipeline 62 is communicated with and arranged at a position, close to the top, of the float oil tank 1, an overflow isolation valve 63 is arranged on the overflow pipeline 62, a second float valve 64 is arranged in the overflow flash tank 61, an oil outlet pipeline of the second float valve 64 is communicated with the bypass system 3 for rapid oil drainage, and an overflow flash tank oil outlet valve 65 is arranged on an oil outlet pipeline of the second float valve 64. An overflow flash tank oil inlet pipeline communicated with the oil inlet main pipeline 11 is arranged on the overflow flash tank 61, and an overflow flash tank oil inlet valve 66 is arranged on the overflow flash tank oil inlet pipeline; and an overflow flash tank oil discharge pipeline with an overflow flash tank oil discharge valve 67 is arranged at the bottom of the overflow flash tank 61. When the float oil tank 1 normally operates, if the float ball valve 2 and the float oil valve 4 have faults, or the oil level continues to rise after the action adjustment and is high to the overflow pipeline 62, the oil flow is connected to the overflow flash tank 61 through the overflow pipeline 62, the oil level in the overflow flash tank 61 is controlled by the second float ball valve 64, and when the oil level of the overflow flash tank 61 is high, the oil is discharged to the bypass outlet of the float oil tank through the second float ball valve 64, so that the oil is quickly discharged.
In addition, in order to ensure that hydrogen does not leak from the overflow flash tank when the oil level is low, the overflow oil drainage loop needs to fill the overflow flash tank with oil before being used. The specific mode is that the overflow flash tank is filled with oil by adjusting the overflow flash tank oil inlet valve 66, the float oil tank oil inlet valve 13 and the overflow flash tank oil outlet valve 67, so as to ensure a certain oil level. And after the oil filling is finished, the opening degree of each valve is recovered. The bypass system can be used as a floater oil tank maintenance bypass and is used when emergency maintenance is carried out on a prepared floater oil tank and an overflow expansion loop.
The floating oil tank of phoenix-stage power plant number 1 unit has also made similar transformation, establishes main, supplementary floating oil tank, and the principle etc. are connect overflow floating oil tank on main floating oil tank than at the bottom of the main oil tank in vice oil tank position, and the float oil tank after phoenix-stage power plant's transformation normally operates. The operation proves that the float oil tank with the overflow loop effectively improves the operation reliability of the float oil tank. We will continue to focus on the operational effects in future use.
The float oil valve is additionally provided with the float oil valve at a high position on the basis of the original single-float ball valve float oil tank, and a float ball of the float oil valve is too high through the float ball support, so that the alarm and the quick oil drainage can be carried out when the oil level is high, and the oil level is controlled at a high limit position; in addition, the arrangement of the overflow flash tank, the pipeline and the related valves greatly optimizes the original adjusting mode, thereby effectively ensuring the operation reliability of the float oil tank.
The specific embodiments described herein are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. A sealed oil double-float oil tank of a generator comprises a float oil tank, a float ball valve and a bypass system, wherein the top of the float oil tank is connected with an oil inlet main path, the float ball valve is arranged in the float oil tank and is connected with the bypass system through an oil outlet main path, an oil inlet valve of the float oil tank and an oil outlet valve of an overflow isolation valve are respectively arranged on the oil inlet main path and the oil outlet main path, and a bypass oil outlet valve is arranged on the bypass system; the method is characterized in that: the auxiliary oil drainage mechanism comprises a float oil valve and a float ball support, the float oil valve is arranged in a float oil tank, the arrangement height of the float oil valve is higher than that of a float ball valve, an oil outlet pipeline of the float oil valve is communicated with the oil outlet main pipeline, and a float ball of the float oil valve is placed on the float ball support and is lifted up through the float ball support; when the oil level of the float oil tank is higher than the height of a float ball of the float oil valve, the float oil valve acts to assist oil drainage and triggers the high-level alarm module to alarm.
2. The generator sealing oil double-float oil tank as claimed in claim 1, wherein: still include urgent overflow discharge system, urgent overflow discharge system is including supporting overflow flash tank and the overflow pipeline who sets up, overflow pipeline intercommunication sets up on float oil tank is close to the position at top and this overflow pipeline is provided with the overflow isolation valve, be provided with the second ball-cock assembly in the overflow flash tank, the oil outlet pipe and the bypass system intercommunication of this second ball-cock assembly are in order to carry out quick draining, be provided with overflow flash tank oil outlet valve on the oil outlet pipe of second ball-cock assembly.
3. The generator sealing oil double-float oil tank as claimed in claim 2, wherein: an overflow flash tank oil inlet pipeline communicated with the oil inlet main pipeline is arranged on the overflow flash tank, and an overflow flash tank oil inlet valve is arranged on the overflow flash tank oil inlet pipeline; and an overflow flash tank oil discharge pipeline with an overflow flash tank oil discharge valve is arranged at the bottom of the overflow flash tank.
4. The generator seal oil double float oil tank according to any one of claims 1 to 3, characterized in that: the top and the bottom of the float oil tank are respectively provided with an exhaust pipeline and an oil drain pipeline, and the exhaust pipeline and the oil drain pipeline are respectively provided with a float oil tank exhaust valve and a float oil tank oil drain valve.
5. The generator sealing oil double-float oil tank as claimed in claim 4, wherein: the floater support includes the pole setting of vertical setting and sets firmly the platform of placing that is used for placing float oil valve floater in this pole setting, the pole setting is height-adjustable's columnar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354243.1A CN114233862A (en) | 2021-11-16 | 2021-11-16 | Double-floater oil tank for sealing oil of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111354243.1A CN114233862A (en) | 2021-11-16 | 2021-11-16 | Double-floater oil tank for sealing oil of generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114233862A true CN114233862A (en) | 2022-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111354243.1A Pending CN114233862A (en) | 2021-11-16 | 2021-11-16 | Double-floater oil tank for sealing oil of generator |
Country Status (1)
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| CN (1) | CN114233862A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1346511A (en) * | 1970-11-26 | 1974-02-13 | Electrolux Ab | Valve for closing a container outlet |
| US20100189545A1 (en) * | 2009-01-27 | 2010-07-29 | General Electric Company | Automated Seal Oil By-Pass System For Hydrogen Cooled Generators |
| CN202228913U (en) * | 2011-09-28 | 2012-05-23 | 中冶东方工程技术有限公司 | Upper fuel tank with overflow device |
| CN102575775A (en) * | 2009-10-08 | 2012-07-11 | 阿尔斯通技术有限公司 | Sealing system of a sealed electric generator |
| CN204344929U (en) * | 2014-11-06 | 2015-05-20 | 上海电气电站设备有限公司 | A kind of double-current ring seal oil system |
| CN105059474A (en) * | 2015-08-17 | 2015-11-18 | 上海船舶研究设计院 | Ship fuel oil overflow cabin structure |
| CN205677675U (en) * | 2016-06-22 | 2016-11-09 | 福建大唐国际宁德发电有限责任公司 | A kind of double float fuel tank sealing oil system |
| CN207777624U (en) * | 2017-12-29 | 2018-08-28 | 贵州黔东电力有限公司 | A kind of generator float Oiltank structure |
| CN214036885U (en) * | 2020-11-02 | 2021-08-24 | 华能荆门热电有限责任公司 | Liquid level stabilizing system for oil tank of sealed oil floater of generator |
| CN216843115U (en) * | 2021-11-16 | 2022-06-28 | 淮浙煤电有限责任公司凤台发电分公司 | Double-float oil tank for generator sealing oil |
-
2021
- 2021-11-16 CN CN202111354243.1A patent/CN114233862A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1346511A (en) * | 1970-11-26 | 1974-02-13 | Electrolux Ab | Valve for closing a container outlet |
| US20100189545A1 (en) * | 2009-01-27 | 2010-07-29 | General Electric Company | Automated Seal Oil By-Pass System For Hydrogen Cooled Generators |
| CN102575775A (en) * | 2009-10-08 | 2012-07-11 | 阿尔斯通技术有限公司 | Sealing system of a sealed electric generator |
| CN202228913U (en) * | 2011-09-28 | 2012-05-23 | 中冶东方工程技术有限公司 | Upper fuel tank with overflow device |
| CN204344929U (en) * | 2014-11-06 | 2015-05-20 | 上海电气电站设备有限公司 | A kind of double-current ring seal oil system |
| CN105059474A (en) * | 2015-08-17 | 2015-11-18 | 上海船舶研究设计院 | Ship fuel oil overflow cabin structure |
| CN205677675U (en) * | 2016-06-22 | 2016-11-09 | 福建大唐国际宁德发电有限责任公司 | A kind of double float fuel tank sealing oil system |
| CN207777624U (en) * | 2017-12-29 | 2018-08-28 | 贵州黔东电力有限公司 | A kind of generator float Oiltank structure |
| CN214036885U (en) * | 2020-11-02 | 2021-08-24 | 华能荆门热电有限责任公司 | Liquid level stabilizing system for oil tank of sealed oil floater of generator |
| CN216843115U (en) * | 2021-11-16 | 2022-06-28 | 淮浙煤电有限责任公司凤台发电分公司 | Double-float oil tank for generator sealing oil |
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