CN214741505U - Lubricating oil system of steam turbine - Google Patents
Lubricating oil system of steam turbine Download PDFInfo
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- CN214741505U CN214741505U CN202120707073.XU CN202120707073U CN214741505U CN 214741505 U CN214741505 U CN 214741505U CN 202120707073 U CN202120707073 U CN 202120707073U CN 214741505 U CN214741505 U CN 214741505U
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Abstract
The application discloses a lubricating oil system of a steam turbine, which comprises an oil tank, an oil passing device and an oil quality analyzer, wherein the oil quality analyzer is provided with an oil liquid inlet and an oil liquid outlet, and the oil passing device is provided with an oil return pipe; the lubricating oil system also comprises a first pipeline, a second pipeline and a third pipeline; the oil return pipe is communicated with the oil inlet through a first pipeline, and the oil outlet is communicated with the oil tank through a second pipeline; the first end of the third pipeline is connected to the first pipeline, the second end of the third pipeline is connected to the second pipeline, the third pipeline is provided with a first switch valve, the position, between the first end of the third pipeline and the oil inlet, of the first pipeline is provided with a second switch valve, and the position, between the oil outlet and the second end of the third pipeline, of the second pipeline is provided with a third switch valve. The technical scheme who this application adopted can solve the oil quality detection cycle length among the background art to make oil to have the problem of influence to the operation safety of steam turbine.
Description
Technical Field
The application belongs to the technical field of oil quality detection of lubricating oil of a steam turbine of a thermal power plant, and particularly relates to a lubricating oil system of the steam turbine.
Background
Lubricating oil for a steam turbine is subjected to oil quality detection periodically (for example, once a month) according to national standards, but due to the long detection period, occasional deterioration in the oil quality of the lubricating oil cannot be detected in time. Because the cleaning degree of the lubricating oil has a direct relation with the operation safety of the steam turbine, the current regular detection cannot ensure the operation safety of the steam turbine, and the oil quality detection in a longer period has influence on the operation safety of the steam turbine.
SUMMERY OF THE UTILITY MODEL
The purpose of this application embodiment is to provide a lubricating oil system of steam turbine, can solve the oil quality detection cycle length and lead to the problem that has the influence to the operation safety of steam turbine.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a lubricating oil system of a steam turbine, the disclosed lubricating oil system of a steam turbine includes an oil tank, an oil passing device, and an oil quality analyzer, wherein:
the oil quality analyzer is provided with an oil liquid inlet and an oil liquid outlet, and the oil passing device is provided with an oil return pipe;
the lubricating oil system also comprises a first pipeline, a second pipeline and a third pipeline;
the oil return pipe is communicated with the oil inlet through the first pipeline, and the oil outlet is communicated with the oil tank through the second pipeline;
the first end of third pipeline is connected on the first pipeline, the second end of third pipeline is connected on the second pipeline, the third pipeline is provided with first ooff valve, lie in on the first pipeline the first end of third pipeline with position between the fluid import is provided with the second ooff valve, lie in on the second pipeline the fluid export with position between the second end of third pipeline is provided with the third ooff valve.
The technical scheme adopted by the application can achieve the following beneficial effects:
the lubricating oil system that this application embodiment discloses improves through the structure to the lubricating oil system in the correlation technique, through addding oil quality analysis appearance, the third pipeline, first ooff valve, second ooff valve and third ooff valve, make the lubricating oil system can realize the real-time detection to the lubricating oil in the pipeline, and when the environment in the pipeline can influence the testing result of oil quality analysis appearance, through the break-make of controlling first ooff valve, second ooff valve and third ooff valve, realize the flushing function to the pipeline of whole lubricating oil system, be used for guaranteeing the accuracy of oil quality analysis appearance to the lubricating oil testing result in the pipeline, thereby reduce the influence of the oil quality of lubricating oil to the operation safety of whole steam turbine.
Drawings
Fig. 1 is a schematic structural diagram of a lubricating oil system disclosed in an embodiment of the present application.
Description of reference numerals:
100-oil tank;
200-oil passing device, 210-oil return pipe;
300-an oil quality analyzer, 310-an oil liquid inlet and 320-an oil liquid outlet;
400-a first pipeline, 410-a second on-off valve;
500-a second pipeline, 510-a third on-off valve;
600-third line, 610-first on-off valve;
700-sampling pipeline, 710-fourth switch valve;
800-fourth pipeline, 810-fifth switch valve, 820-sixth switch valve;
900-monitoring host computer;
1000-distribution box.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one. In addition, "and/or" in the specification and claims means at least one of connected objects, a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.
The lubricating oil system of the steam turbine provided by the embodiment of the present application is described in detail through specific embodiments and application scenarios thereof with reference to the accompanying drawings.
As shown in fig. 1, the embodiment of the present application discloses a lubricating oil system for a steam turbine, which includes an oil tank 100, an oil passing device 200, and an oil quality analyzer 300.
The oil tank 100 can be used as an oil source of a lubricating oil system to supply oil to the whole system, and can recycle the used lubricating oil. The oil passing device 200 can be a device which needs to be lubricated by lubricating oil in the whole system and is also a main functional structure of the steam turbine. The oil quality analyzer 300 is an apparatus for analyzing the oil quality of the lubricating oil in the whole system, and can save the workload of workers and detect the oil quality of the lubricating oil system in time compared with manual oil quality analysis.
The lubricating oil system further comprises a first pipeline 400, a second pipeline 500 and a third pipeline 600, the oil return pipe 210 is communicated with the oil inlet 310 through the first pipeline 400, the oil outlet 320 is communicated with the oil tank 100 through the second pipeline 500, so that the lubricating oil in the oil return pipe 210 can flow into the oil quality analyzer 300 from the oil inlet 310 through the first pipeline 400, and after detection and analysis of the oil quality analyzer 300, the lubricating oil can flow out of the oil outlet 320, flow into the second pipeline 500 and finally flow into the oil tank 100.
The first end of the third pipeline 600 is connected to the first pipeline 400, and the second end of the third pipeline 600 is connected to the second pipeline 500, so that the lubricating oil can directly flow into the oil tank 100 through the third pipeline 600 without passing through the oil quality analyzer 300 in the process of flowing from the oil return pipe 210 to the oil tank 100. In this regard, the third pipe 600 is provided with a first switching valve 610, the first pipe 400 is provided with a second switching valve 410 at a position between the first end of the third pipe 600 and the oil inlet 310, and the second pipe 500 is provided with a third switching valve 510 at a position between the oil outlet 320 and the second end of the third pipe 600.
In this case, the first switching valve 610 may be provided as a valve having a cleaning function, so that the lubricating oil system can clean the piping of the entire lubricating oil system. Specifically, after the lubricating oil system is just installed or has undergone major maintenance due to a fault, the first on-off valve 610 may be opened, and the second on-off valve 410 and the third on-off valve 510 may be closed, so that the first on-off valve 610 may flush the pipeline in the entire lubricating oil system; after the first switch valve 610 flushes the pipeline clean, the first switch valve 610 can be closed, and the second switch valve 410 and the third switch valve 510 can be opened, so that the lubricating oil in the whole lubricating oil system can be detected and analyzed by the oil quality analyzer 300. The third pipeline 600 and the first switch valve 610 are arranged to ensure the accuracy of the detection result of the oil quality analyzer 300 in the lubricating oil system, so as to further ensure the safety of the oil quality of the lubricating oil in the lubricating oil system, and further reduce the influence of the oil quality of the lubricating oil on the whole steam turbine.
The lubricating oil system disclosed in the embodiment of the application improves the structure of the lubricating oil system in the related art, and by additionally arranging the oil quality analyzer 300, the third pipeline 600, the first switch valve 610, the second switch valve 410 and the third switch valve 510, the lubricating oil system can realize real-time detection of the lubricating oil in the pipelines, and when the environment in the pipelines can influence the detection result of the oil quality analyzer 300, the flushing function of the pipelines of the whole lubricating oil system is realized by controlling the on-off of the first switch valve 610, the second switch valve 410 and the third switch valve 510, so as to ensure the accuracy of the oil quality analyzer 300 on the detection result of the lubricating oil in the pipelines, and further reduce the influence of the oil quality of the lubricating oil on the operation safety of the whole turbine.
In the lubricating oil system disclosed in the embodiment of the present application, the lubricating oil system may further include a sampling pipeline 700, the sampling pipeline 700 is connected in parallel with the first pipeline 400, so that the sampling pipeline 700 and the first pipeline 400 may both be connected to the oil return pipe 210, the first end of the sampling pipeline 700 is communicated with the oil return pipe 210, the second end of the sampling pipeline 700 is a discharge end, and the sampling pipeline 700 is provided with a fourth switch valve 710. Under this kind of condition, when needing the staff to carry out the manual work to the lubricating oil in the lubricating oil system and detect, can open fourth ooff valve 710 for lubricating oil in returning oil pipe 210 can flow from the discharge end through sample pipeline 700, thereby makes things convenient for the staff to the sample of lubricating oil, and the staff can close fourth ooff valve 710 after the sample. Sampling pipeline 700 and fourth ooff valve 710's setting can make things convenient for the sampling test of the lubricating oil of staff in to the lubricating oil system, can contrast the testing result of artifical testing result and oil quality analyzer 300 simultaneously, and then reach the purpose of checking up each other.
In a further technical solution, the lubricating oil system may further include a fourth pipeline 800, a first end of the fourth pipeline 800 is communicated with the first pipeline 400, a second end of the fourth pipeline 800 is communicated with the oil return pipe 210, a first end of the sampling pipeline 700 is connected to the fourth pipeline 800 and is communicated with the fourth pipeline 800, a distance between the first end of the sampling pipeline 700 and the first end of the fourth pipeline 800 is a first distance, a distance between the first end of the sampling pipeline 700 and the second end of the fourth pipeline 800 is a second distance, and the second distance is smaller than the first distance.
Under the above conditions, the lubricating oil in the oil return pipe 210 may flow through the fourth pipeline 800 and the first pipeline 400 in sequence and then flow into the oil quality analyzer 300 for detection, and meanwhile, the lubricating oil in the oil return pipe 210 may also flow through the fourth pipeline 800 and the sampling pipeline 700 in sequence and finally flow out of the lubricating oil system, thereby facilitating manual detection by a worker. The second distance is smaller than the first distance, so that the sampling pipeline 700 is closer to the oil return pipe 210, the quality of the lubricating oil in the sampling pipeline 700 is closer to the quality of the lubricating oil in the oil passing device 200, and the detection result of the lubricating oil in the sampling pipeline 700 can be more accurate by a worker.
In a more preferable scheme, the length of the sampling pipeline 700 is less than or equal to 3 meters, so that the phenomenon that the temperature of lubricating oil drops too much due to the overlong pipeline of the sampling pipeline 700 can be prevented, and the phenomenon that the impurity in the lubricating oil is deposited due to the overlong pipeline 700 can be prevented, so that the accuracy of manual detection of workers is affected. Meanwhile, when the sampling pipeline 700 is selected by a person skilled in the art, stainless steel can be adopted; when choosing the mode of the junction of sample pipeline 700 for use, also can avoid choosing for use the right angle to connect and choose for use the return bend to promote the sample quality of lubricating oil in the sample pipeline 700. It should be noted that the length, the manufacturing material and the connection mode of the sampling pipe 700 are not specifically limited in the embodiments of the present application.
In the lubricating oil system disclosed in the embodiment of the present application, the number of the oil passing devices 200 may be at least two, the lubricating oil system further includes at least two fourth pipelines 800, the fourth pipelines 800 correspond to the oil passing devices 200 one to one, a first end of each fourth pipeline 800 is communicated with the first pipeline 400, a second end of each fourth pipeline 800 is communicated with an oil return pipe of the corresponding oil passing device 200, and at least two fourth pipelines 800 are provided with fifth switching valves 810. In this case, the lubricating oil system can detect the quality of the lubricating oil in at least two oil passing devices 200, specifically, the number of the fourth pipelines 800 corresponds to the number of the oil passing devices 200 and is communicated with the number of the oil passing devices 200, and meanwhile, one end of each of the at least two fourth pipelines 800 is communicated with the first pipeline 400, so that the lubricating oil in the oil passing devices 200 can pass through the corresponding fourth pipeline 800, and the lubricating oil is conveyed to the first pipeline 400 and finally can return to the oil tank 100 after being detected by the oil quality analyzer 300. The fifth switch valve 810 arranged on the fourth pipeline 800 can control on-off of the fourth pipeline 800, under normal conditions, the fifth switch valve 810 can be in an open state, but when the lubricating oil system breaks down or needs to be flushed, the existence of the lubricating oil in the pipeline is not allowed, and at the moment, the fifth switch valve 810 can be closed, so that the safety of the lubricating oil system is ensured.
In a further technical solution, the fifth switching valve 810 may be an electromagnetic valve, the lubricating oil system may further include a monitoring host 900, the monitoring host 900 is connected to the electromagnetic valve, the monitoring host 900 may control the electromagnetic valves to be sequentially opened and closed according to a preset period, and when one of all the electromagnetic valves is in an open state, the other one of the electromagnetic valves is in a closed state. In this case, an arrangement in which the monitoring main unit 900 controls the solenoid valves to be sequentially opened and closed according to a preset period may be cooperated with the arrangement of the first switching valve 610. When the first switching valve 610 is in an open state, the second switching valve 410 and the third switching valve 510 are closed, and the monitoring host 900 at this time controls the electromagnetic valve to be closed; when the first on-off valve 610 is in the closed state, the second on-off valve 410 and the third on-off valve 510 are opened, and at this time, the monitoring host 900 controls one of the electromagnetic valves to be in the open state, so that the oil quality analyzer 300 can analyze the oil quality of the lubricating oil in one oil passing device 200. Specifically, the preset period of the monitoring host 900 for the electromagnetic valve may be one hour, so that the period in which the lubricating oil in at least two oil passing devices 200 is detected in turn is one hour, and therefore the oil quality analyzer 300 can detect the lubricating oil in different oil passing devices 200 timely and accurately, thereby being beneficial to reducing the influence of the oil quality of the lubricating oil on the operation safety of the steam turbine, and meanwhile, the working conditions of different oil passing devices 200 can be fed back according to the detection result, for example, after the oil liquid in the oil return pipe 210 of a certain oil passing device 200 is detected, it is found that the oil quality parameter exceeds the early warning value, and thus the fault of the oil passing device 200 can be reflected to a certain extent.
In a more specific technical solution, at least two fourth pipelines 800 may each be provided with a sixth switching valve 820, the sixth switching valve 820 and the fifth switching valve 810 are sequentially arranged in an extending direction of the fourth pipeline 800, and the sixth switching valve 820 is a manual switching valve. Compared with an electromagnetic valve, the manual switch valve is slightly less convenient to control, but the manual switch valve is safer and more reliable to control, and when the detection of the lubricating oil of the oil passing device 200 needs to be cut off, the sixth switch valve 820 is manually closed, so that the communication between the oil passing device 200 and a pipeline of a lubricating oil system can be cut off.
In the lubricating oil system disclosed in the embodiment of the present application, the lubricating oil system further includes a sampling pipeline 700, a first end of the sampling pipeline 700 is communicated with the fourth pipeline 800, a second end of the sampling pipeline 700 is a discharge end, the sampling pipeline 700 is provided with a fourth switch valve 710, and the first end of the sampling pipeline 700 is located between the sixth switch valve 820 and the fifth switch valve 810. In this case, the sixth switching valve 820 may be disposed on the fourth pipeline 800 closer to the oil passing device 200 than the fifth switching valve 810, so that the manually operated sixth switching valve 820 is in an open state under normal conditions, and thus the sampling detection of the worker in the sampling pipeline 700 is not affected by the on-off of the fifth switching valve 810, thereby facilitating the operation of the worker. Also, once the sixth switching valve 820 needs to be closed when the fifth switching valve 810 malfunctions, the sixth switching valve 820 and the fourth switching valve 710 can form double block, thereby improving the stability of closing.
In a further technical solution, the fifth switch valve 810, the sixth switch valve 820 and the fourth switch valve 710 may be disposed adjacent to the second end of the fourth pipeline 800, so that the fifth switch valve 810, the sixth switch valve 820 and the fourth switch valve 710 are all closer to the oil return pipe 210, and thus when the lubricating oil system fails, the fifth switch valve 810, the sixth switch valve 820 and the fourth switch valve 710 can be intensively operated or maintained in time to control the on/off of the lubricating oil in the pipeline, and meanwhile, the waste of the lubricating oil in the pipeline can be reduced.
In the lubricating oil system disclosed in the embodiment of the application, the lubricating oil system further comprises an alarm, the monitoring host 900 is connected with the oil quality analyzer 300, and under the condition that the oil quality parameter detected by the oil quality analyzer 300 exceeds the early warning value, the monitoring host 900 controls the alarm to give an alarm and controls the electromagnetic valve in an open state to be closed. In this case, the alarm can prompt the analysis and detection result of the oil quality analyzer 300, specifically, when the lubricating oil in the pipeline of the lubricating oil system does not meet the detection standard of the oil quality analyzer 300, the oil quality analyzer 300 can transmit a signal to the monitoring host 900, the monitoring host 900 can control the alarm to send a signal to prompt a worker, and the monitoring host 900 can control the electromagnetic valve in the open state to close, so that the lubricating oil which does not meet the detection standard is prevented from flowing into the oil tank 100. Typically, the oil quality parameters include the volume fraction of particulate matter per unit volume of oil, the water content of the oil, and the like.
In the lubricating oil system disclosed in the embodiment of the present application, the oil tank 100 may be a negative pressure oil tank, so that the lubricating oil in the second pipeline 500 can more smoothly return to the oil tank 100. The oil passing device 200 is provided with an oil inlet pipe (not shown in the figure), the oil inlet pipe is communicated with the oil tank 100, and a filtering device is arranged between the oil tank 100 and the oil inlet pipe, so that the lubricating oil which is detected and returns to the oil tank 100 can be continuously reused in the oil passing device 200 through the oil inlet pipe after being filtered by the filtering device, the structure of a lubricating oil system can be simplified, and the utilization rate of the lubricating oil in the lubricating oil system is improved.
In more specific technical scheme, in the lubricating oil system disclosed in the embodiment of the present application, the lubricating oil system further includes a distribution box 1000, the distribution box 1000 is electrically connected with the oil quality analyzer 300, and the distribution box 1000 can provide 24 v voltage for the oil quality analyzer 300, so that the oil quality analyzer 300 can normally work. Of course, oil quality analyzer 300 may be powered by a battery.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A lubricating oil system of a steam turbine, comprising an oil tank (100), an oil passing device (200) and an oil quality analyzer (300), wherein:
the oil quality analyzer (300) is provided with an oil liquid inlet (310) and an oil liquid outlet (320), and the oil passing device (200) is provided with an oil return pipe (210);
the lubricating oil system further comprises a first line (400), a second line (500) and a third line (600);
the oil return pipe (210) is communicated with the oil inlet (310) through the first pipeline (400), and the oil outlet (320) is communicated with the oil tank (100) through the second pipeline (500);
the first end of third pipeline (600) is connected on first pipeline (400), the second end of third pipeline (600) is connected on second pipeline (500), third pipeline (600) is provided with first ooff valve (610), lie in on first pipeline (400 the first end of third pipeline (600) with position between fluid import (310) is provided with second ooff valve (410), lie in on second pipeline (500) fluid export (320) with position between the second end of third pipeline (600) is provided with third ooff valve (510).
2. The lubrication oil system according to claim 1, further comprising a sampling line (700), wherein the sampling line (700) is connected in parallel with the first line (400), a first end of the sampling line (700) is communicated with the oil return pipe (210), a second end of the sampling line (700) is a discharge end, and the sampling line (700) is provided with a fourth switching valve (710).
3. The lubrication oil system according to claim 2, further comprising a fourth pipeline (800), wherein a first end of the fourth pipeline (800) is communicated with the first pipeline (400), a second end of the fourth pipeline (800) is communicated with the oil return pipe (210), a first end of the sampling pipeline (700) is connected to the fourth pipeline (800) and is communicated with the fourth pipeline (800), a distance between the first end of the sampling pipeline (700) and the first end of the fourth pipeline (800) is a first distance, a distance between the first end of the sampling pipeline (700) and the second end of the fourth pipeline (800) is a second distance, and the second distance is smaller than the first distance.
4. The lubricating oil system according to claim 1, wherein there are at least two oil passing devices (200), the lubricating oil system further comprises at least two fourth pipelines (800), the fourth pipelines (800) correspond to the oil passing devices (200) one by one, a first end of each fourth pipeline (800) is communicated with the first pipeline (400), a second end of each fourth pipeline (800) is communicated with the corresponding oil return pipe of the oil passing device (200), and each of the at least two fourth pipelines (800) is provided with a fifth switch valve (810).
5. The lubricating oil system according to claim 4, wherein the fifth switching valve (810) is an electromagnetic valve, the lubricating oil system further comprises a monitoring host (900), the monitoring host (900) is connected with the electromagnetic valve, the monitoring host (900) can control the electromagnetic valve to be opened and closed sequentially according to a preset period, and when one of the electromagnetic valves is in an open state, the other electromagnetic valve is in a closed state.
6. The lubricating oil system according to claim 5, characterized in that the at least two fourth pipelines (800) are each provided with a sixth on-off valve (820), the sixth on-off valve (820) and the fifth on-off valve (810) being arranged in series in the extension direction of the fourth pipelines (800), the sixth on-off valve (820) being a manual on-off valve.
7. The lubrication oil system according to claim 6, further comprising a sampling line (700), a first end of the sampling line (700) being in communication with the fourth line (800), a second end of the sampling line (700) being a discharge end, the sampling line (700) being provided with a fourth on-off valve (710), the first end of the sampling line (700) being located between the sixth on-off valve (820) and a fifth on-off valve (810).
8. The lubrication oil system of claim 7, wherein the fifth switching valve (810), the sixth switching valve (820), and the fourth switching valve (710) are disposed adjacent to a second end of the fourth pipeline (800).
9. The lubricating oil system according to claim 5, further comprising an alarm, wherein the monitoring host (900) is connected with the alarm, the monitoring host (900) is connected with the oil quality analyzer (300), and the monitoring host (900) controls the alarm to alarm and controls the electromagnetic valve in an open state to close when the oil quality parameter detected by the oil quality analyzer (300) exceeds an early warning value.
10. Lubricating oil system according to claim 1, characterized in that the oil tank (100) is a negative pressure oil tank, the oil passing device (200) has an oil inlet pipe which communicates with the oil tank (100), and a filtering device is provided between the oil tank (100) and the oil inlet pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120707073.XU CN214741505U (en) | 2021-04-06 | 2021-04-06 | Lubricating oil system of steam turbine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120707073.XU CN214741505U (en) | 2021-04-06 | 2021-04-06 | Lubricating oil system of steam turbine |
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| Publication Number | Publication Date |
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| CN214741505U true CN214741505U (en) | 2021-11-16 |
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| CN202120707073.XU Active CN214741505U (en) | 2021-04-06 | 2021-04-06 | Lubricating oil system of steam turbine |
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- 2021-04-06 CN CN202120707073.XU patent/CN214741505U/en active Active
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