CN219622753U - Temporary top shaft oil throwing system of steam turbine of large nuclear power station - Google Patents
Temporary top shaft oil throwing system of steam turbine of large nuclear power station Download PDFInfo
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- CN219622753U CN219622753U CN202320594719.7U CN202320594719U CN219622753U CN 219622753 U CN219622753 U CN 219622753U CN 202320594719 U CN202320594719 U CN 202320594719U CN 219622753 U CN219622753 U CN 219622753U
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- oil
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- top shaft
- steam turbine
- pipeline
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- 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
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Abstract
The utility model provides a temporary top shaft oil throwing system of a large-scale nuclear power station steam turbine, which comprises a temporary oil tank arranged on a steam turbine running layer platform, wherein the temporary oil tank is respectively communicated with a top shaft oil pump and a main oil tank through temporary pipelines; the top shaft oil pump is communicated with the top shaft oil distributor through a formal pipeline, and the top shaft oil distributor is communicated with the inside of the turbine bearing through two pipelines, wherein the two pipelines comprise a formal pipeline for throwing top shaft oil and a temporary pipeline for flushing lubricating oil; and an oil return port of the turbine bearing is communicated with the main oil tank through a formal pipeline.
Description
Technical Field
The utility model belongs to the technical field of steam turbine equipment, and particularly relates to a temporary top shaft oil throwing system of a large-scale nuclear power station steam turbine.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The turbine rotor centering is the most critical and precise working procedure for unit installation, in the process of turbine centering, the machining oil essence and the like are added on the contact surface of a bearing bush, a driving external force is used for directly coiling the rotor, the rotor size and the weight of a large-sized nuclear power unit turbine are large, the weight of a single rotor is about 300t, in the process of shaft centering, a design and manufacturer are required to drive the rotor under the condition of formally jacking a shaft oil system so as to meet the centering requirement, and therefore, the conventional practice cannot meet the design requirement of the large-sized nuclear power unit; meanwhile, the formal jacking oil installation and application are affected by the long factors of the lubricating oil system installation and the flushing period, and the centering requirements cannot be met in the aspects of process logic and construction period, so that a temporary jacking oil system of a large-scale nuclear power station steam turbine is required to be adopted.
Disclosure of Invention
The utility model aims to solve the problems and provides a temporary top shaft oil feeding system of a steam turbine of a large nuclear power station.
According to a first aspect of the embodiment of the utility model, a temporary top shaft oil throwing system of a large nuclear power station steam turbine is provided, and the temporary top shaft oil throwing system comprises a temporary oil tank arranged on a steam turbine running layer platform, wherein the temporary oil tank is respectively communicated with a top shaft oil pump and a main oil tank through temporary pipelines; the top shaft oil pump is communicated with the top shaft oil distributor through a formal pipeline, and the top shaft oil distributor is communicated with the inside of the turbine bearing through two pipelines, wherein the two pipelines comprise a formal pipeline for throwing top shaft oil and a temporary pipeline for flushing lubricating oil; and an oil return port of the turbine bearing is communicated with the main oil tank through a formal pipeline.
Further, the temporary oil tank comprises an oil tank body, a liquid level meter is arranged inside the oil tank body, and a pipeline interface flange is further arranged on the oil tank body.
Further, the pipeline interface flange comprises an oil inlet, an oil return and an overflow flange interface.
Further, the system also comprises a first oil filter and a second oil filter, wherein the first oil filter is arranged on a temporary pipeline between the new oil supply module of the external steam turbine and the temporary oil tank; the inlet of the second oil filter is communicated with the main oil tank through a temporary pipeline, and the outlet of the second oil filter is respectively communicated with the main oil tank and the temporary oil tank through temporary pipelines.
Further, a control valve is arranged on a temporary pipeline between the new oil supply module of the external steam turbine and the first oil filter and between the first oil filter and the temporary oil tank; the temporary pipeline between the main oil tank and the second oil filter is provided with a control valve, and the temporary pipeline between the second oil filter and the temporary oil tank is also provided with a control valve.
Further, a temporary pipeline communicated with the temporary oil tank and used for secondary filtering of the top shaft oil is arranged between the new oil supply module of the external steam turbine and the first oil filter.
Further, a control valve is arranged on a temporary pipeline between the temporary oil tank and the jackshaft oil pump.
Further, the first oil filter and the second oil filter are both plate-type oil filters.
Further, a drain outlet controlled by a valve is arranged at the bottom of the temporary oil tank.
Further, the main oil tank is provided with a sampling port which is controlled by a valve and is used for oil sample testing and sampling.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The scheme of the utility model provides a temporary top shaft oil throwing system of a large-scale nuclear power station steam turbine, provides a scheme for realizing the quick top shaft oil throwing for achieving the centering of a steam turbine rotor, and has the advantages of short construction period and no flushing by lubricating oil compared with the regular top shaft oil throwing system; the system integrity for temporary use can be met by adding the temporary oil tank and the temporary pipeline in the process, so that the problems that the conventional oil adding fine disc rotor method cannot meet design requirements and the formal top shaft oil system has long period and cannot meet the centering requirement of a steam turbine are effectively solved.
(2) According to the scheme, the temporary oil tank for the top axle oil is arranged, a mode that a formal pipeline and a temporary pipeline are combined is adopted, the cleanliness of lubricating oil is controlled through the plate oil filter, the difficulty that a formal top axle oil system is late in use is solved, meanwhile, the difficulty that lubricating oil flushing and temporary top axle oil use can be synchronously implemented is solved, the system is complete, the use is flexible, the method is applicable to different units, and the method is safe, convenient and practical, and improves the installation accuracy and the construction efficiency.
Additional aspects of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.
FIG. 1 is a schematic diagram of a temporary top shaft oil injection system of a large nuclear power plant steam turbine according to an embodiment of the utility model;
1, a top shaft oil pump; 1-1, a first valve; 1-2, a second valve; 1-3, a third valve; 2. a second oil filter; 2-1, a fourth valve; 3. a first oil filter; 3-1, a fifth valve; 3-2, a sixth valve; 3-3, a seventh valve; 3-4, an eighth valve; 3-5, a ninth valve; 4. an external turbine fresh oil supply module; 5. a main oil tank; 5-1, tenth valve; 5-2, eleventh valve; 5-3, a twelfth valve; 6. a temporary oil tank; 6-1, thirteenth valve; 6-2, a fourteenth valve; 7. a bearing; 8. bearing bush; 9. an oil return port; 10. sleeving oil; 11. a top shaft oil distributor; 12. the temporary pipeline is used for flushing.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Embodiments of the utility model and features of the embodiments may be combined with each other without conflict.
Term interpretation:
formal pipeline: the pipeline corresponding to the gray lines shown in the figure 1 can be applied to the construction of a formal top-casting shaft oil system and is fixedly arranged;
temporary pipe: the pipelines corresponding to the black lines and the black dotted lines shown in the figure 1 are used for flushing temporary top shaft oil and lubricating oil when the turbine rotor of the large nuclear power unit is centered, and are detachably arranged.
Size head: also called a pipe reducer.
Embodiment one:
the embodiment aims to provide a temporary top shaft oil throwing system of a steam turbine of a large nuclear power station.
In order to meet the requirement of a centering disc rotor of a large-scale nuclear power station steam turbine on temporary top shaft oil injection, the embodiment provides a temporary top shaft oil injection system of the large-scale nuclear power station steam turbine, wherein a temporary oil tank of the top shaft oil is arranged, a mode of combining a formal pipeline and a temporary pipeline is adopted, and the cleanliness of lubricating oil is controlled through a plate-type oil filter, so that the difficulty of late application of the formal top shaft oil injection system is solved, and the difficulty that the flushing of the lubricating oil and the application of the temporary top shaft oil can be synchronously implemented is also solved; specifically, as shown in fig. 1, the system comprises a temporary oil tank 6 arranged on a turbine running layer platform, wherein the temporary oil tank 6 is respectively communicated with a top shaft oil pump 1 and a main oil tank 5 through temporary pipelines; the jacking oil pump 1 is connected with a jacking oil distributor 11 through a formal pipeline, and the jacking oil distributor 11 is communicated with the inside of the turbine bearing 7 through two pipelines, wherein the two pipelines comprise a formal pipeline for feeding jacking oil and a temporary pipeline for flushing lubricating oil (namely a temporary pipeline 12 for flushing); the oil return port 9 of the turbine bearing 7 is communicated with the main oil tank through a formal pipeline.
In a specific embodiment, the temporary oil tank 6 comprises an oil tank body, a liquid level meter is arranged in the oil tank body, a pipeline interface flange is further arranged on the oil tank body for accessing a temporary pipeline, and a scheduling hole is further formed in the top of the oil tank body; the bottom of the temporary oil tank is provided with a drain outlet controlled by a valve, and the drain outlet is provided with a control valve (a fourteenth valve 6-2 shown in figure 1); the liquid level meter is connected to the oil tank body through a flange and is used for measuring the liquid level of lubricating oil in the temporary oil tank.
As an alternative embodiment, the pipe interface flange includes an oil inlet, an oil return, and an overflow flange interface.
In a specific embodiment, the system further comprises a first oil filter 3 and a second oil filter 2, wherein the first oil filter 3 is arranged in a temporary pipeline between an external new oil supply module 4 of the steam turbine and a temporary oil tank 6; the inlet of the second oil filter 2 is communicated with the main oil tank 5 through a temporary pipeline, and the outlet of the second oil filter 2 is respectively communicated with the main oil tank 5 and the temporary oil tank 6 through temporary pipelines.
The temporary pipelines between the external new turbine oil supply module 4 and the first oil filter 3 and between the first oil filter 3 and the temporary oil tank 6 are provided with control valves, specifically, as shown in fig. 1, the new oil of the external new turbine oil supply module 4 enters the temporary oil tank 6 through a fifth valve 3-1, a sixth valve 3-2, the first oil filter 3 and a seventh valve 3-3 in sequence; the temporary pipeline between the main oil tank 5 and the second oil filter 2 is provided with a control valve, specifically, as shown in fig. 1, the oil collected in the main oil tank 5 sequentially passes through a fourth valve 2-1 (wherein, as shown in fig. 1, a big end and a small end for connecting pipelines with different diameters are arranged above the fourth valve), the second oil filter 2 and an eleventh valve 5-2, and the filtered oil is returned to the main oil tank 5; the temporary pipeline between the second oil filter and the temporary oil tank is also provided with a control valve, specifically, as shown in fig. 1, the oil collected in the main oil tank 5 sequentially passes through a fourth valve 2-1, the second oil filter 2 and a twelfth valve 5-3, and the filtered oil is conveyed to the temporary oil tank; the temporary pipeline between the temporary oil tank 6 and the jackshaft oil pump 1 is provided with a control valve, specifically, as shown in fig. 1, oil in the temporary oil tank 6 enters the jackshaft oil pump 1 through a ninth valve 3-5 and a first valve 1-1, so that the jackshaft oil pump 1 enters jackshaft oil pump pressure oil into a jackshaft oil distributor 11 through a third valve 1-3, and the jackshaft oil distributor 11 performs subsequent operations by selecting different pipelines according to actual requirements (the requirements include top oil casting and lubricating oil flushing), specifically: the jacking oil pump 1 conveys jacking oil pump pressure oil to each bearing bush 8 in the turbine bearing 7 through a pipeline, and sleeved oil 9 collected through an oil return port is conveyed back to the main oil tank 5 through a pipeline, so that a complete circulation loop is formed.
In one or more embodiments, a temporary pipeline between the external turbine fresh oil supply module 4 and the first oil filter 3 is provided with a temporary pipeline communicated with a temporary oil tank 6 for secondary filtering of the top shaft oil; the purpose of the method is to perform secondary filtration on the oil in the temporary oil tank, specifically, the oil in the temporary oil tank 6 returns the filtered oil to the temporary oil tank 6 through an eighth valve 3-4, a sixth valve 3-2, a first oil filter 3 and a seventh valve 3-3;
in a specific embodiment, the first oil filter and the second oil filter are both plate-type oil filters.
In a specific embodiment, the main tank is provided with a sampling port for oil sample assay sampling controlled by a valve, and the sampling port is provided with a tenth valve 5-1.
In a specific embodiment, the top shaft oil adopts lubricating oil, wherein the temporary oil tank 6 and the main oil tank 5 are both lubricating oil.
For easy understanding, the following description will further explain the scheme of the embodiment from the concrete implementation process of casting the top shaft oil:
as shown in fig. 1, the new oil supply module 4 of the steam turbine is filled into the temporary oil tank 6 through the oil filter 3 and opens the fifth valve 3-1, the sixth valve 3-2 and the seventh valve 3-3, the temporary oil tank 6 flows into the main oil tank 5 through high-level spilled oil, the temporary oil tank 6 enters the top shaft oil pump 1 through opening the ninth valve 3-5 and the first valve 1-1, the top shaft oil is conveyed to each bearing bush in the bearing 7 through the third valve 1-3 and the top shaft oil distributor 11, the sleeved oil 10 obtained by the top shaft oil return flows back to the main oil tank 5 through a pipeline, the temporary pipeline 12 for flushing is used as temporary flushing before the top shaft oil is put into use, the temporary oil tank 6 can be used for draining through a drain outlet thirteenth valve 6-1 of the temporary oil tank, the tenth valve 5-1 of a sampling port is a sampling point of the main oil tank for oil sample assay, and the first oil filter 3 and the second oil filter 2 can realize the lubricating oil filtering work of different loops through different valve controls.
According to the scheme, the temporary oil tank for the top axle oil is arranged, a mode that a formal pipeline and a temporary pipeline are combined is adopted, and the cleanliness of lubricating oil is controlled through the plate oil filter, so that the difficulty that a formal top axle oil system is used late is solved, and meanwhile, the difficulty that lubricating oil flushing and temporary top axle oil application can be synchronously implemented is solved. The method has the advantages of complete system, flexible use, suitability for different units, safety, convenience, practicality and improvement of installation accuracy and construction efficiency.
The temporary top shaft oil throwing system of the steam turbine of the large nuclear power station can be realized, and has wide application prospect.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The temporary top shaft oil throwing system of the steam turbine of the large nuclear power station is characterized by comprising a temporary oil tank arranged on a platform of an operation layer of the steam turbine, wherein the temporary oil tank is respectively communicated with a top shaft oil pump and a main oil tank through temporary pipelines; the top shaft oil pump is communicated with the top shaft oil distributor through a formal pipeline, and the top shaft oil distributor is communicated with the inside of the turbine bearing through two pipelines, wherein the two pipelines comprise a formal pipeline for throwing top shaft oil and a temporary pipeline for flushing lubricating oil; and an oil return port of the turbine bearing is communicated with the main oil tank through a formal pipeline.
2. The temporary top shaft oil system of a large nuclear power plant steam turbine according to claim 1, wherein the temporary oil tank comprises an oil tank body, a liquid level gauge is arranged inside the oil tank body, and a pipeline interface flange is further arranged on the oil tank body.
3. A temporary top shaft oil system for a large nuclear power plant steam turbine as recited in claim 2, wherein said pipe interface flange comprises an oil inlet, oil return and overflow flange interface.
4. The temporary top-shaft oil feeding system for a steam turbine of a large nuclear power plant according to claim 1, further comprising a first oil filter and a second oil filter, wherein the first oil filter is arranged in a temporary pipeline between an external new oil supply module of the steam turbine and a temporary oil tank; the inlet of the second oil filter is communicated with the main oil tank through a temporary pipeline, and the outlet of the second oil filter is respectively communicated with the main oil tank and the temporary oil tank through temporary pipelines.
5. The temporary top shaft oil feeding system for a steam turbine of a large nuclear power plant as claimed in claim 4, wherein a temporary pipeline between the new oil supply module of the external steam turbine and the first oil filter and the temporary oil tank is provided with a control valve; the temporary pipeline between the main oil tank and the second oil filter is provided with a control valve, and the temporary pipeline between the second oil filter and the temporary oil tank is also provided with a control valve.
6. A temporary top shaft oil feeding system for a large nuclear power plant steam turbine as claimed in claim 4, wherein a temporary pipeline between the external steam turbine fresh oil supply module and the first oil filter is provided with a temporary pipeline communicated with a temporary oil tank and used for secondary filtering of the top shaft oil.
7. A temporary top shaft oil injection system for a steam turbine of a large nuclear power plant as claimed in claim 1, wherein a temporary pipeline between the temporary oil tank and the top shaft oil pump is provided with a control valve.
8. The temporary top shaft oil feeding system for a steam turbine of a large nuclear power plant as claimed in claim 4, wherein the first oil filter and the second oil filter are plate type oil filters.
9. A temporary top shaft oil system for a steam turbine of a large nuclear power plant as claimed in claim 1, wherein a drain port controlled by a valve is arranged at the bottom of the temporary oil tank.
10. A temporary top shaft oil system for a large nuclear power plant steam turbine as claimed in claim 1 wherein the main oil tank is provided with a sampling port for oil sample assay sampling controlled by a valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594719.7U CN219622753U (en) | 2023-03-21 | 2023-03-21 | Temporary top shaft oil throwing system of steam turbine of large nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320594719.7U CN219622753U (en) | 2023-03-21 | 2023-03-21 | Temporary top shaft oil throwing system of steam turbine of large nuclear power station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219622753U true CN219622753U (en) | 2023-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320594719.7U Active CN219622753U (en) | 2023-03-21 | 2023-03-21 | Temporary top shaft oil throwing system of steam turbine of large nuclear power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219622753U (en) |
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2023
- 2023-03-21 CN CN202320594719.7U patent/CN219622753U/en active Active
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