CN203770655U - Uniflow ring sealing oil system - Google Patents
Uniflow ring sealing oil system Download PDFInfo
- Publication number
- CN203770655U CN203770655U CN201420059938.6U CN201420059938U CN203770655U CN 203770655 U CN203770655 U CN 203770655U CN 201420059938 U CN201420059938 U CN 201420059938U CN 203770655 U CN203770655 U CN 203770655U
- Authority
- CN
- China
- Prior art keywords
- oil
- oil system
- pipeline
- hydrogen
- sealing oil
- 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.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title abstract description 20
- 239000001257 hydrogen Substances 0.000 claims abstract description 13
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 13
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002828 fuel tank Substances 0.000 claims description 14
- 238000000605 extraction Methods 0.000 claims description 8
- 239000003921 oil Substances 0.000 abstract description 66
- 239000010687 lubricating oil Substances 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 2
- 238000001816 cooling Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Abstract
The utility model belongs to the field of power plant equipment, and provides a uniflow ring sealing oil system which can completely solve the problem that in an existing power plant, when a sealing oil system separately operates, the oil level of a vacuum oil tank of a hydrogen-cooling electric generator can not be maintained. A ball valve is mounted on an oil discharging pipeline between pressure oil tanks and a hydrogen oil separator, and the oil discharging pipeline is communicated with the vacuum oil tank through a pipeline which is provided with a stop valve. The uniflow ring sealing oil system has the advantages that on one hand, when a machine is started and shut down and in defect eliminating of a lubricating oil system device, if a lubricating oil system must be stopped, the sealing oil system can separately operate for a long time, and economic loss generated in gas replacing of the electric generator is lowered; on the other hand, operation reliability and flexibility of the sealing oil system are improved, and safety benefits are obvious.
Description
Technical field
The utility model belongs to electric power factory equipment field.
Background technique
Current 330MW grade power plant, generator adopts hydrogen-cooled mode, single current ring oil seal.Sealing oil system is by a primary seal oil pump; a stand-by AC sealing oil pump; a direct current backup seal oil pump; a vaccum fuel tank; two pressure oil tanks, a deaerator, a vacuum pump; two smoke exhaust fans, oily hydrogen defferential valve and reporting to the police for signal measurements such as oil return, repairing pipeline and pressure, differential pressure, flow, oil levels accordingly and the composition such as interlocking protective system.Primary seal oil pump outlet oil pressure: 0.8--0.9Mpa, oily hydrogen differential pressure: 56 ± 20KPa.
When unit normally moves, sealing oil system oil return divides hydrogen side, empty side oil return, and empty side oil return is back to lubricant oil main fuel tank through pressure oil tank to hydrogen oil separator, and lubricating oil system is constantly to sealing oil system repairing.
Under lubricating oil system failure condition, sealing oil system is in self-loopa state, and system can not get the repairing of lubricating oil system, and constantly loses the oil return of sky side part, and the oil level of vaccum fuel tank will decline continuously until can not maintain operation.
Summary of the invention
The purpose of this utility model is thoroughly to solve the hydrogen-cooled mode generator of existing power plant vaccum fuel tank oil level when sealing oil system isolated operation to maintain the incessantly single-flow seal oil of problem.
The utility model is at pressure oil tank to mounting ball valve on hydrogen oil separator oil extraction pipeline, and oil extraction pipeline and vaccum fuel tank are by pipeline connection, and stop valve is installed on pipeline.
The beneficial effects of the utility model are:
warpthe utility model transformation; when one side start and stop and lubricating oil system elimination of equipment defect; as stopped lubricating oil system operation; can make the long-time isolated operation of sealing oil system; reduce generator gas matter and change produced economic loss; improved on the other hand sealing oil system reliability of operation and flexibility, safety benefit is obvious.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
The utility model is at pressure oil tank to mounting ball valve 3 on hydrogen oil separator oil extraction pipeline 2, and oil extraction pipeline 2 is communicated with by pipeline 4 with vaccum fuel tank 5, and stop valve 1 is installed on pipeline 4.
Below to further detailed explanation of the utility model:
1, at former pressure oil tank, to hydrogen oil separator oil extraction pipeline, DN40 ball valve is installed.
2, in step 1, after new installation stop valve, draw DN40 pipeline to vaccum fuel tank pipeline, and the stop valve of DN40 is installed on this pipeline.
3, pipe laying suspension and support in position, prevents from vibrating in conduit running.
The utility model solves the technological scheme that its technical problem adopts: vaccum fuel tank oil level keep basic reason be incessantly hydrogen oil separator oil level higher than U-shaped pipe outlet side, make the empty side oil return of sealing bearing bush continue to flow back to main fuel tank.As lubricant oil in hydrogen oil separator is directly led back to vaccum fuel tank, vaccum fuel tank oil level maintains problem incessantly and will thoroughly solve during sealing oil system isolated operation.
According to the analysis of the problems referred to above, determine that the valve that twice DN40 is installed in original sealing oil system can realize designing requirement.
After transformation, in sealing oil system figure example illustrated, coating Red is for newly-increased pipeline and increase by 2 road DN40 ball valves.After transformation, during sealing oil system independent operating, suitably open " newly-increased hydrogen oil separator is to vaccum fuel tank repairing door ", close " newly-increased pressure oil tank is to hydrogen oil separator oil extraction cut-off gate ", can guarantee that vaccum fuel tank oil level is effectively controlled, realize the long-time self-loopa operation of sealing oil system.
Claims (1)
1. a single-flow seal oil, it is characterized in that: at pressure oil tank to hydrogen oil separator oil extraction pipeline (2), go up mounting ball valve (3), and oil extraction pipeline (2) is communicated with by pipeline (4) with vaccum fuel tank (5), and stop valve (1) is installed on pipeline (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420059938.6U CN203770655U (en) | 2014-02-10 | 2014-02-10 | Uniflow ring sealing oil system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420059938.6U CN203770655U (en) | 2014-02-10 | 2014-02-10 | Uniflow ring sealing oil system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203770655U true CN203770655U (en) | 2014-08-13 |
Family
ID=51287846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420059938.6U Expired - Lifetime CN203770655U (en) | 2014-02-10 | 2014-02-10 | Uniflow ring sealing oil system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203770655U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196576A (en) * | 2014-09-01 | 2014-12-10 | 大唐保定热电厂 | Sealing oil system of hydrogen cooling turbine generator unit |
| CN106051169A (en) * | 2016-08-03 | 2016-10-26 | 华北电力科学研究院有限责任公司 | Double-ring sealing oil system for generator of thermal power plant and starting and stopping control method of double-ring sealing oil system |
| CN109713846A (en) * | 2019-01-11 | 2019-05-03 | 中广核工程有限公司 | A kind of stream ring sealing oil system of generator of nuclear power station three and its empty side seal oil return line |
-
2014
- 2014-02-10 CN CN201420059938.6U patent/CN203770655U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104196576A (en) * | 2014-09-01 | 2014-12-10 | 大唐保定热电厂 | Sealing oil system of hydrogen cooling turbine generator unit |
| CN104196576B (en) * | 2014-09-01 | 2015-11-25 | 大唐保定热电厂 | Hydrogen-cooled steam turbine power generation group sealing oil system |
| CN106051169A (en) * | 2016-08-03 | 2016-10-26 | 华北电力科学研究院有限责任公司 | Double-ring sealing oil system for generator of thermal power plant and starting and stopping control method of double-ring sealing oil system |
| CN109713846A (en) * | 2019-01-11 | 2019-05-03 | 中广核工程有限公司 | A kind of stream ring sealing oil system of generator of nuclear power station three and its empty side seal oil return line |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |