CN214743248U - Reduction gearbox lubricating oil system of steam turbine - Google Patents
Reduction gearbox lubricating oil system of steam turbine Download PDFInfo
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- CN214743248U CN214743248U CN202120704806.4U CN202120704806U CN214743248U CN 214743248 U CN214743248 U CN 214743248U CN 202120704806 U CN202120704806 U CN 202120704806U CN 214743248 U CN214743248 U CN 214743248U
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- reduction gearbox
- lubricating oil
- steam turbine
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Abstract
The utility model relates to a reducing gear box lubricating oil system of steam turbine, it includes reducing gear box, main oil pump and lubricating oil station, and the low-speed hub connection main oil pump of reducing gear box. The lubricating oil inlet of the main oil pump is connected with the oil outlet, and the lubricating oil outlet of the main oil pump is connected with the oil inlet. The oil outlet is connected with a lubricating oil inlet of the reduction gearbox, a lubricating oil outlet of the reduction gearbox is connected with an oil collecting port through a reduction gearbox oil return pipeline, and an air filter is arranged on the reduction gearbox oil return pipeline. Lubricating oil inlets of a plurality of bearing boxes of the steam turbine are connected with oil outlets, and lubricating oil outlets of the bearing boxes are connected with oil collecting ports. The output power of the steam turbine is fully utilized, and the extra energy consumption of a reduction gearbox lubricating oil system of the steam turbine is solved. The air filter filters and exhausts oil smoke generated by lubricating oil of the reduction gearbox and air in the reduction gearbox, which is higher than atmospheric pressure, so that the pressure in the reduction gearbox is balanced with the atmospheric pressure, the cleanness of the lubricating oil can be kept, and the service life of the reduction gearbox is prolonged.
Description
Technical Field
The utility model relates to a lubricating system technical field especially relates to a reducing gear box lubricating oil system of steam turbine.
Background
With the continuous development of the economy of China in recent years, the scale of industrial heat supply users of thermal power enterprises is continuously enlarged, and the high-rotating-speed and high-backpressure industrial heat supply steam turbine not only can provide a stable heat source for heat users of the thermal power enterprises, but also can reduce the plant power consumption rate of the thermal power enterprises, so that the high-rotating-speed and high-backpressure industrial heat supply steam turbine is widely applied to the thermal power enterprises.
The industrial heat supply turbine has the characteristics of high parameter, high back pressure and high rotating speed, the industrial heat supply turbine is generally connected with the generator through the reduction gearbox, and the lubricating oil system provides lubricating oil for the high rotating speed turbine, the reduction gearbox and the generator. If the electric main oil pump is independently arranged, extra energy consumption is needed; in addition, in the operation process of the steam turbine, the reduction gearbox rotates at a high speed to generate heat and oil smoke, and the accumulation of the heat and the oil smoke has potential safety hazards on the pressure control and operation environment of lubricating oil of the reduction gearbox.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the above-mentioned shortcoming and the deficiency of the prior art, the utility model provides a reducing gear box lubricating oil system of steam turbine, it has solved lubricating system and has consumed extra energy and lubricating oil pressure balance's when the reducing gear box moves problem.
(II) technical scheme
In order to achieve the above object, the utility model discloses a reducing gear box lubricating oil system of steam turbine includes:
the high-speed shaft of the reduction gearbox is connected with the rotor of the steam turbine, and the low-speed shaft of the reduction gearbox is connected with the rotor of the generator;
the low-speed shaft of the reduction gearbox is connected with the main oil pump so as to drive the main oil pump to operate;
the lubricating oil station comprises an oil inlet, an oil outlet, an oil collecting port and an oil discharging port, wherein a lubricating oil inlet of the main oil pump is connected with the oil discharging port, and a lubricating oil outlet of the main oil pump is connected with the oil inlet;
the oil outlet is connected with the lubricating oil inlet of the reduction gearbox through a reduction gearbox oil inlet pipeline; the lubricating oil outlet of the reduction gearbox is connected with the oil collecting port through a reduction gearbox oil return pipeline, and an air filter is arranged on the reduction gearbox oil return pipeline;
lubricating oil inlets of a plurality of bearing boxes of the steam turbine are connected with the oil outlets, and lubricating oil outlets of the bearing boxes are connected with the oil collecting port.
Optionally, an oil overflow pipeline is arranged between the lubricating oil inlet of the main oil pump and the lubricating oil outlet of the main oil pump.
Optionally, an oil spill valve is arranged on the oil spill pipeline, an inlet of the oil spill valve is connected with a lubricating oil outlet of the main oil pump, and an outlet of the oil spill valve is connected with a lubricating oil inlet of the main oil pump.
Optionally, the reduction gearbox lubricating oil system of the steam turbine further comprises: an oil pressure control line;
the inlet of the oil pressure control pipeline is connected with the lubricating oil outlet of the main oil pump, and the outlet of the oil pressure control pipeline is connected with the oil collecting port.
Optionally, a throttle orifice is provided on the oil pressure control line.
Optionally, a connection point of the inlet of the oil pressure control line and the lubricating oil outlet of the main oil pump is located upstream of a connection point of the oil spill line and the lubricating oil outlet of the main oil pump.
Optionally, a pipeline monitoring device is further arranged on the oil return pipeline of the reduction gearbox.
Optionally, the line monitoring device comprises a sight glass.
Optionally, the sight glass is located downstream of the air cleaner.
Optionally, the air filter is detachably connected with the oil return pipeline of the reduction gearbox.
(III) advantageous effects
The low-speed shaft of the reduction gearbox is connected with the main oil pump to drive the main oil pump to operate, the output power of the steam turbine is fully utilized, and the extra energy consumption of a reduction gearbox lubricating oil system of the steam turbine is solved. The air filter filters and exhausts oil smoke generated by lubricating oil of the reduction gearbox and air in the reduction gearbox, which is higher than atmospheric pressure, so that the pressure in the reduction gearbox is balanced with the atmospheric pressure, and the running environment of the unit is kept clean; the air filter also prevents particles in the atmospheric environment from entering the lubricating oil system, so that the cleanness of the lubricating oil is kept, and the service life of the reduction gearbox is prolonged.
Drawings
FIG. 1 is a schematic view of the overall structure of a reduction gearbox lubricating oil system of a steam turbine according to the present invention;
fig. 2 is the reduction box structure schematic diagram of the reduction box lubricating oil system of the steam turbine of the utility model.
[ description of reference ]
1: a reduction gearbox; 2: a steam turbine; 3: a generator;
10: a reduction gearbox oil inlet pipeline; 11: an oil return pipeline of the reduction gearbox; 12: a high speed shaft; 13: a low speed shaft; 14: a peep window; 15: an air cleaner;
20: a main oil pump; 21: an oil pressure control line; 22: a restriction orifice plate; 23: an oil overflow pipeline; 24: an oil spill valve; 25: an oil inlet pipeline of the bearing box; 26: a bearing housing oil return line; 27: a main oil pump oil inlet pipeline; 28: the main oil pump is pumped out of the oil pipeline.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings. In which the terms "upper", "lower", etc. are used herein with reference to the orientation of fig. 1.
For a better understanding of the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides a reducing gear box lubricating oil system of steam turbine, as shown in figure 1, it includes reducing gear box 1, main oil pump 20 and lubricating oil station. The high-speed shaft 12 of the reduction gearbox 1 is connected with the rotor of the steam turbine 2, and the low-speed shaft 13 of the reduction gearbox 1 is connected with the rotor of the generator 3. The rotor of the steam turbine 2 is connected with the rotor of the generator 3 through the reduction gearbox 1, so that the heat energy is converted into the rotary mechanical energy and further into the electric energy, and the generator 3 is dragged to operate and generate electricity. Specifically, the low-speed shaft 13 of the reduction gearbox 1 and the main oil pump 20 are of a coaxial structure and drive the main oil pump 20 to operate, the output power of the steam turbine 2 is fully utilized, and the extra energy consumption of a lubricating oil system of the steam turbine generator unit is solved.
As shown in fig. 1, in the oil path of the main oil pump 20, a lubricating oil inlet of the main oil pump 20 and an oil discharge port of a lubricating oil station are connected by a main oil pump inlet line 27. The lubricating oil outlet of the main oil pump 20 is connected with a main oil pump outlet pipeline 28, the inlet of the main oil pump outlet pipeline 28 is connected with the lubricating oil outlet of the main oil pump 20, the outlet of the main oil pump outlet pipeline 28 is connected to the oil inlet of a lubricating oil station, a plurality of branch oil outlet pipelines are distributed through the lubricating oil station, and the oil outlet of one branch oil outlet pipeline is connected with the lubricating oil inlet of the reduction gearbox 1 through a reduction gearbox oil inlet pipeline 10. As shown in figure 2, a lubricating oil outlet of the reduction gearbox 1 is connected with an oil collecting port of a lubricating oil station through a reduction gearbox oil return pipeline 11, and an air filter 15 is arranged on the reduction gearbox oil return pipeline 11. The reduction gearbox 1 inevitably generates heat and oil smoke during operation, the accumulation of the heat and the oil smoke can increase the atmospheric pressure in the reduction gearbox 1, and potential safety hazards exist for the operation of a unit. The air filter 15 can filter and exhaust oil smoke generated by lubricating oil of the reduction gearbox 1 and air in the reduction gearbox 1 which is higher than atmospheric pressure, so that the pressure in the reduction gearbox 1 is balanced with the atmospheric pressure, and the operating environment of the unit is kept clean; the air filter 15 also prevents particles in the atmospheric environment from entering the lubricating oil system, thereby keeping the lubricating oil clean and prolonging the service life of the reduction gearbox 1. The lubricating oil inlets of the plurality of bearing boxes of the steam turbine 2 are connected to the oil outlets of the lubricating oil station through a bearing box oil inlet pipeline 25, and the lubricating oil outlets of the plurality of bearing boxes of the steam turbine 2 are connected to the oil collecting ports of the lubricating oil station through a bearing box oil return pipeline 26. The main oil pump 20 supplies oil, and meanwhile, the reduction gearbox 1 and each bearing box of the turbo generator unit are lubricated, so that the reduction gearbox 1 and each bearing of the turbo generator unit can run safely and stably for a long time.
As shown in fig. 1, an oil overflow line 23 is provided between the lubricating oil inlet of the main oil pump 20 and the lubricating oil outlet of the main oil pump 20, an oil overflow valve 24 is provided on the oil overflow line 23, the inlet of the oil overflow valve 24 is connected to the lubricating oil outlet of the main oil pump 20, and the outlet of the oil overflow valve 24 is connected to the lubricating oil inlet of the main oil pump 20. When the pressure of the lubricating oil outlet of the main oil pump 20 is too high, the oil overflow valve 24 is communicated to release the pressure, so that the pressure of the lubricating oil outlet of the main oil pump 20 is effectively ensured to be stabilized in the unit operation specification, and the risk of outward leakage of the lubricating oil in the bearing box caused by too high oil pressure is avoided.
As shown in fig. 1, the reduction gearbox lubricating oil system of the steam turbine further comprises an oil pressure control pipeline 21. An inlet of the oil pressure control line 21 is connected to a lubricating oil outlet of the main oil pump 20, and an outlet of the oil pressure control line 21 is connected to a bearing housing return line 26 of the steam turbine 2. The connection point of the inlet of the oil pressure control line 21 and the main oil pump outlet line 28 is located upstream of the connection point of the spill line 23 and the main oil pump outlet line 28. When the pressure at the lubricant outlet of the main oil pump 20 is too high, the pressure may be released through the oil pressure control line 21. The oil pressure control pipeline 21 is matched with the oil spilling valve 24, so that the pressure of the lubricating oil outlet of the main oil pump 20 is stabilized within the unit operation specification.
As shown in fig. 1, it is preferable that a throttle orifice 22 is disposed on the oil pressure control pipeline 21, and the oil pressure control pipeline 21 utilizes the local resistance of the throttle orifice 22 to release the pressure of the lubricating oil into the bearing housing oil return pipeline 26, so as to reduce the oil pressure of the main oil pump oil outlet pipeline 28 and avoid affecting the operation of the bearing housing lubricating system of the steam turbine 2.
As shown in fig. 1 and 2, a pipeline monitoring device is further arranged on the reduction gearbox oil return pipeline 11, the pipeline monitoring device is preferably a peep window 14, and the peep window 14 is located downstream of the air filter 15, so that the flowing condition of the lubricating liquid in the reduction gearbox oil return pipeline 11 can be observed conveniently.
Preferably, the air filter 15 is detachably connected with the gearbox return line 11, so that the replacement and maintenance of the air filter 15 are facilitated.
The utility model provides an among the reducing gear box lubricating oil system of steam turbine, the low-speed axle 13 of reducing gear box 1 is coaxial structure and drives the operation of main oil pump 20 with main oil pump 20, and the additional energy resource consumption of the reducing gear box lubricating oil system of steam turbine has been solved to make full use of steam turbine 2's output. The oil pressure control pipeline 21 is matched with the oil spilling valve 24, so that the pressure of the lubricating oil outlet of the main oil pump 20 is stabilized within the unit operation specification. The air filter 15 filters and exhausts oil smoke generated by lubricating oil of the reduction gearbox 1 and air higher than atmospheric pressure in the reduction gearbox 1, so that the pressure in the reduction gearbox 1 is balanced with the atmospheric pressure, and the operating environment of the unit is kept clean; the air filter 15 also prevents particles in the atmospheric environment from entering the lubricating oil system, thereby keeping the lubricating oil clean and prolonging the service life of the reduction gearbox 1.
In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; either as communication within the two elements or as an interactive relationship of the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present application, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
While embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that modifications, alterations, substitutions and variations may be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The reduction gearbox lubricating oil system of the steam turbine is characterized by comprising the following components:
the high-speed shaft of the reduction gearbox is connected with the rotor of the steam turbine, and the low-speed shaft of the reduction gearbox is connected with the rotor of the generator;
the low-speed shaft of the reduction gearbox is connected with the main oil pump so as to drive the main oil pump to operate;
the lubricating oil station comprises an oil inlet, an oil outlet, an oil collecting port and an oil discharging port, wherein a lubricating oil inlet of the main oil pump is connected with the oil discharging port, and a lubricating oil outlet of the main oil pump is connected with the oil inlet;
the oil outlet is connected with the lubricating oil inlet of the reduction gearbox through a reduction gearbox oil inlet pipeline; the lubricating oil outlet of the reduction gearbox is connected with the oil collecting port through a reduction gearbox oil return pipeline, and an air filter is arranged on the reduction gearbox oil return pipeline;
lubricating oil inlets of a plurality of bearing boxes of the steam turbine are connected with the oil outlets, and lubricating oil outlets of the bearing boxes are connected with the oil collecting port.
2. The reduction gearbox lubricating oil system of a steam turbine according to claim 1, wherein an oil overflow line is provided between a lubricating oil inlet of the main oil pump and a lubricating oil outlet of the main oil pump.
3. A reduction gearbox lubricating oil system of a steam turbine according to claim 2, characterized in that an oil spill valve is arranged on the oil spill pipeline, the inlet of the oil spill valve is connected with the lubricating oil outlet of the main oil pump, and the outlet of the oil spill valve is connected with the lubricating oil inlet of the main oil pump.
4. The reduction gearbox lubricating oil system of a steam turbine according to claim 2, wherein the reduction gearbox lubricating oil system of a steam turbine further comprises: an oil pressure control line;
the inlet of the oil pressure control pipeline is connected with the lubricating oil outlet of the main oil pump, and the outlet of the oil pressure control pipeline is connected with the oil collecting port.
5. The reduction gearbox lubricating oil system of a steam turbine according to claim 4, wherein a throttle orifice is provided on the oil pressure control line.
6. The reduction gearbox lubricating oil system of a steam turbine according to claim 4, wherein the connection point of the inlet of the oil pressure control line and the lubricating oil outlet of the main oil pump is located upstream of the connection point of the oil overflow line and the lubricating oil outlet of the main oil pump.
7. A reduction gearbox lubricating oil system of a steam turbine according to any of the claims 1-6, characterised in that the reduction gearbox return oil line is further provided with a line monitoring device.
8. The reduction gearbox lubricating oil system of a steam turbine according to claim 7, wherein the line monitoring device comprises a sight glass.
9. The reduction gearbox lubricating oil system of a steam turbine according to claim 8, wherein the sight glass is located downstream of the air cleaner.
10. A reduction gearbox lubricating oil system of a steam turbine according to any of the claims 1-6, characterised in that the air filter is detachably connected to the reduction gearbox return line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120704806.4U CN214743248U (en) | 2021-04-07 | 2021-04-07 | Reduction gearbox lubricating oil system of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120704806.4U CN214743248U (en) | 2021-04-07 | 2021-04-07 | Reduction gearbox lubricating oil system of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214743248U true CN214743248U (en) | 2021-11-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120704806.4U Active CN214743248U (en) | 2021-04-07 | 2021-04-07 | Reduction gearbox lubricating oil system of steam turbine |
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| Country | Link |
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| CN (1) | CN214743248U (en) |
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2021
- 2021-04-07 CN CN202120704806.4U patent/CN214743248U/en active Active
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