Lubricating mechanism of steam turbine

Abstract

The utility model is applicable to the technical field of lubrication of steam turbines, and provides a lubricating mechanism of a steam turbine, which comprises a bottom plate, a lubricating oil tank and a lubricating oil tank, and one side of the oil tank is fixedly connected with a heat dissipation tank. According to the lubricating mechanism of the steam turbine, the heat dissipation box, the filtering box, the backflow tank, the first connecting pipe, the second connecting pipe, the filtering mechanism and the cooling mechanism are arranged, so that filtering and cooling of backflow lubricating oil are not affected; the internal structure of the lubricating mechanism of the steam turbine is simplified, energy consumption needed when the lubricating mechanism of the steam turbine is used is reduced, and the problems that in the process that lubricating oil flows back into an oil tank, in an existing lubricating mechanism of the steam turbine, impurities in the lubricating oil are filtered through an oil filter, and the lubricating oil is cooled through an oil cooler; the problems that the internal structure of the lubricating mechanism of the steam turbine is complex, and energy consumption needed by the lubricating mechanism of the steam turbine is large when the lubricating mechanism of the steam turbine is used are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lubrication of steam turbines, and in particular relates to a lubrication mechanism of steam turbines. Background Art

[0002] The steam turbine lubrication mechanism is a vital part of the steam turbine. It plays multiple functions such as lubrication, cooling and sealing. During the operation of the steam turbine, the friction between the various components will generate a lot of heat and wear. If there is a lack of proper lubrication, it will not only shorten the life of the machine, but also cause unstable operation and failure. The lubricating oil system is mainly composed of an oil tank, an oil pump, an oil cooler, an oil filter and pipelines. Its working principle is to send the lubricating oil from the oil tank to the friction surface of each component through the oil pump to form a thin film, while taking away the heat generated by friction, maintaining the appropriate gap between the components, and returning the oil pump to the oil tank after dissipating the heat along the oil cooler at an appropriate temperature. The oil filter is responsible for effectively filtering the lubricating oil to prevent impurities and pollutants from entering the system.

[0003] In the process of lubricating oil returning to the oil tank of the existing steam turbine lubrication mechanism, impurities in the lubricating oil are filtered through an oil filter and the lubricating oil is cooled through an oil cooler, resulting in a relatively complex internal structure of the steam turbine lubrication mechanism and a large energy consumption when the steam turbine lubrication mechanism is used. Utility Model Content

[0004] The utility model provides a lubricating mechanism for a steam turbine, aiming to solve the problem that, in the process of the lubricating oil returning to the inside of the oil tank, the existing steam turbine lubricating mechanism filters the impurities in the lubricating oil through an oil filter and cools the lubricating oil through an oil cooler, resulting in a relatively complex internal structure of the lubricating mechanism of the steam turbine and a large energy consumption when the lubricating mechanism of the steam turbine is used.

[0005] The utility model is implemented as follows: a lubrication mechanism of a steam turbine comprises: a base plate, the top of which is fixedly connected to an oil tank; one side of the oil tank is fixedly connected to a heat sink, one side of the heat sink is provided with a filter box, the top of the filter box is fixedly connected to a return pipe, the bottom of the filter box is connected to the heat sink through a first connecting pipe, and the top of the heat sink is connected to the oil tank through a second connecting pipe; a filter mechanism that is easily disassembled is provided on a side of the filter box away from the oil tank; a cooling mechanism for quickly cooling the refluxed lubricating oil is provided inside the heat sink.

[0006] Preferably, the filtering mechanism includes: a box cover is provided on the side of the filter box away from the oil tank, and a plurality of V-shaped filter screens are evenly provided on the side of the box cover close to the filter box, and the V-shaped filter screens are fixedly connected to the box cover, and the V-shaped filter screens are adapted to the filter box; bolts are provided at the four corners of the box cover, one end of the bolts passes through the box cover and extends to the interior of the filter box, and the bolts are threadedly connected to the filter box.

[0007] Preferably, a sealing gasket is provided between the box cover and the filter box, and the sealing gasket is fixedly connected to the box cover.

[0008] Preferably, the cooling mechanism includes: a heat-conducting copper plate is fixedly connected to the inside of the heat sink, a plurality of fins are fixedly connected to one side of the heat-conducting copper plate, and the sides of the fins away from the heat-conducting copper plate are fixedly connected to the heat sink; a plurality of cooling fins are arranged on the side of the heat-conducting copper plate away from the fins, and the cooling fins are fixedly connected to the heat-conducting copper plate; and a wind cooling mechanism is arranged near the cooling fins on the heat sink for quickly blowing the heat dissipated by the cooling fins to the outside of the heat sink.

[0009] Preferably, the air cooling mechanism includes: a mounting rod fixedly connected to the heat sink near the heat sink fins; four micromotors are evenly arranged inside the mounting rod, the micromotors are all fixedly connected to the mounting rod, and the output ends of the micromotors are all fixedly connected to heat sink blades.

[0010] Preferably, a dustproof net is provided on the heat dissipation box near the heat dissipation blades, and the dustproof net is fixedly connected to the heat dissipation box.

[0011] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0012] By arranging a heat sink, a filter box, a reflux tank, a first connecting pipe, a second connecting pipe, a filtering mechanism and a cooling mechanism, the internal structure of the steam turbine lubrication mechanism is simplified and the energy consumption required for the use of the steam turbine lubrication mechanism is reduced without affecting the filtering and cooling of the refluxed lubricating oil. This solves the problem that in the process of the existing steam turbine lubrication mechanism returning the lubricating oil to the oil tank, the impurities in the lubricating oil are filtered by the oil filter and the lubricating oil is cooled by the oil cooler, resulting in a relatively complex internal structure of the steam turbine lubrication mechanism and a large energy consumption when the steam turbine lubrication mechanism is used. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2This is a schematic diagram of the internal structure of the filter box of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the filtering mechanism of the utility model;

[0016] Figure 4 It is a schematic diagram of the cooling mechanism structure of the utility model.

[0017] In the figure: 1. bottom plate; 2. oil tank; 3. heat sink; 4. filter box; 5. return pipe; 6. first connecting pipe; 7. second connecting pipe; 8. filtering mechanism; 9. cooling mechanism; 10. box cover; 11. V-shaped filter; 12. bolts; 13. sealing gasket; 14. thermal conductive copper plate; 15. fins; 16. heat sink fins; 17. air cooling mechanism; 18. mounting rod; 19. micro motor; 20. heat sink blades; 21. dust net. DETAILED DESCRIPTION

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0019] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0020] The utility model embodiment provides a lubrication mechanism for a steam turbine, such as Figure 1-4 As shown, it includes: a base plate 1, the top of the base plate 1 is fixedly connected to an oil tank 2; a heat sink 3 is fixedly connected to one side of the oil tank 2, a filter box 4 is arranged on one side of the heat sink 3, a return pipe 5 is fixedly connected to the top of the filter box 4, the bottom of the filter box 4 is connected to the heat sink 3 through a first connecting pipe 6, and the top of the heat sink 3 is connected to the oil tank 2 through a second connecting pipe 7; a filter mechanism 8 that is easy to disassemble is arranged on the side of the filter box 4 away from the oil tank 2; a cooling mechanism 9 for quickly cooling the refluxed lubricating oil is arranged inside the heat sink 3.

[0021] It should be noted that, in the process of the lubricating oil returning to the oil tank 2, it first enters the interior of the filter box 4 through the reflux pipe 5, filters the lubricating oil through the filtering mechanism 8 inside the filter box 4, and then is transported to the interior of the heat sink 3 through the first connecting pipe 6, cools the lubricating oil through the cooling mechanism 9 inside the heat sink 3, and finally enters the interior of the oil tank 2 through the second connecting pipe 7. This simplifies the internal structure of the lubricating mechanism of the steam turbine and reduces the energy consumption required for the lubricating mechanism of the steam turbine when in use without affecting the filtering and cooling of the refluxed lubricating oil. This solves the problem that in the process of the existing steam turbine lubricating mechanism returning the lubricating oil to the oil tank 2, the impurities in the lubricating oil are filtered through the oil filter and the lubricating oil is cooled through the oil cooler, resulting in a relatively complex internal structure of the lubricating mechanism of the steam turbine and a large energy consumption required for the lubricating mechanism of the steam turbine when in use.

[0022] In a further preferred embodiment of the present invention, Figure 1 , 3 As shown, the filtering mechanism 8 includes: a box cover 10 is arranged on the side of the filter box 4 away from the oil tank 2, and a plurality of V-shaped filter screens 11 are evenly arranged on the side of the box cover 10 close to the filter box 4, and the V-shaped filter screens 11 are fixedly connected to the box cover 10, and the V-shaped filter screens 11 are adapted to the filter box 4; bolts 12 are arranged at the four corners of the box cover 10, one end of the bolts 12 passes through the box cover 10 and extends to the interior of the filter box 4, and the bolts 12 are threadedly connected to the filter box 4.

[0023] In this embodiment, the lubricating oil enters the interior of the filter box 4 through the return pipe 5 and then passes through the V-shaped filter 11. The V-shaped filter 11 filters the impurities in the lubricating oil, and the filtered impurities accumulate at the bottom of the V-shaped filter 11, which can effectively prevent the V-shaped filter 11 from being blocked.

[0024] In a further preferred embodiment of the present invention, Figure 3 As shown, a sealing gasket 13 is provided between the box cover 10 and the filter box 4 , and the sealing gasket 13 is fixedly connected to the box cover 10 .

[0025] In this embodiment, the sealing performance of the connection between the box cover 10 and the filter box 4 is improved to avoid oil leakage.

[0026] In a further preferred embodiment of the present invention, Figure 1 , 4As shown, the cooling mechanism 9 includes: a heat-conducting copper plate 14 is fixedly connected to the inside of the heat-dissipating box 3, a plurality of fins 15 are fixedly connected to one side of the heat-conducting copper plate 14, and the side of the fins 15 away from the heat-conducting copper plate 14 is fixedly connected to the heat-dissipating box 3; a plurality of cooling fins 16 are arranged on the side of the heat-conducting copper plate 14 away from the fins 15, and the cooling fins 16 are fixedly connected to the heat-conducting copper plate 14; and a wind cooling mechanism 17 is arranged near the cooling fins 16 of the heat-dissipating box 3 to quickly blow the heat dissipated by the cooling fins 16 to the outside of the heat-dissipating box 3.

[0027] In this embodiment, the lubricating oil inside the filter box 4 is transported to the inside of the heat sink 3 through the first connecting pipe 6, and the lubricating oil flows through the gaps between the fins 15, the heat sink 3 and the heat-conducting copper plate 14. While flowing, the fins 15 and the heat-conducting copper plate 14 absorb the heat inside the lubricating oil, and the absorbed heat is discharged through the heat sink fins 16. Finally, the hot air is blown to the outside of the heat sink 3 through the air cooling mechanism 17, thereby achieving the purpose of quickly cooling the lubricating oil.

[0028] In a further preferred embodiment of the present invention, Figure 1 , 2 As shown, the air cooling mechanism 17 includes: a mounting rod 18 is fixedly connected to the heat sink 3 near the heat sink fins 16; four micro motors 19 are evenly arranged inside the mounting rod 18, and the micro motors 19 are all fixedly connected to the mounting rod 18, and the output ends of the micro motors 19 are all fixedly connected to heat sink blades 20.

[0029] In this embodiment, the micro motor 19 is started while the lubricating oil flows back to the oil tank 2. The output end of the micro motor 19 drives the heat dissipation blades 20. The heat dissipation blades 20 rotate to blow the hot air emitted by the heat dissipation fins 16 to the outside of the heat dissipation box 3, thereby achieving the purpose of quickly cooling the fins 15, the heat-conducting copper plate 14 and the heat dissipation fins 16.

[0030] In a further preferred embodiment of the present invention, Figure 1 As shown, a dustproof net 21 is provided near the heat dissipation blades 20 of the heat dissipation box 3 , and the dustproof net 21 is fixedly connected to the heat dissipation box 3 .

[0031] In this embodiment, the micro motor 19 and the heat sink fins 16 can be protected to prevent dust from entering the heat sink 3, thereby preventing a large amount of dust from adhering to the surface of the micro motor 19 and the heat sink fins 16, resulting in reduced heat dissipation effect.

[0032] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0033] In the several embodiments provided in the present application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely schematic, such as the division of the above-mentioned units. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunication or other forms.

[0034] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. The above embodiments are only used to illustrate the technical scheme of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in each embodiment of the utility model according to the situation without conflict, without making creative work, so as to obtain different other technical solutions that are essentially not separated from the concept of the utility model, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A lubrication mechanism for a steam turbine, comprising: A bottom plate (1), the top of which is fixedly connected to an oil tank (2); The invention is characterized in that a heat dissipation box (3) is fixedly connected to one side of the oil tank (2), a filter box (4) is arranged on one side of the heat dissipation box (3), a return pipe (5) is fixedly connected to the top of the filter box (4), the bottom of the filter box (4) is connected to the heat dissipation box (3) through a first connecting pipe (6), and the top of the heat dissipation box (3) is connected to the oil tank (2) through a second connecting pipe (7); A filter mechanism (8) that is easily disassembled is provided on a side of the filter box (4) away from the oil tank (2); The heat dissipation box (3) is provided with a cooling mechanism (9) for rapidly cooling the returning lubricating oil.

2. A steam turbine lubrication mechanism according to claim 1, characterized in that: The filtering mechanism (8) comprises: A box cover (10) is arranged on a side of the filter box (4) away from the oil tank (2), and a plurality of V-shaped filter screens (11) are evenly arranged on a side of the box cover (10) close to the filter box (4), and the V-shaped filter screens (11) are fixedly connected to the box cover (10), and the V-shaped filter screens (11) are adapted to the filter box (4); Bolts (12) are provided at the four corners of the box cover (10), one end of each of the bolts (12) passes through the box cover (10) and extends into the interior of the filter box (4), and the bolts (12) are threadedly connected to the filter box (4).

3. A steam turbine lubrication mechanism according to claim 2, characterized in that: A sealing gasket (13) is provided between the box cover (10) and the filter box (4), and the sealing gasket (13) is fixedly connected to the box cover (10).

4. A steam turbine lubrication mechanism according to claim 1, characterized in that: The cooling mechanism (9) comprises: A heat-conducting copper plate (14) is fixedly connected inside the heat-dissipating box (3), a plurality of fins (15) are fixedly connected to one side of the heat-conducting copper plate (14), and the sides of the fins (15) away from the heat-conducting copper plate (14) are fixedly connected to the heat-dissipating box (3); A plurality of heat dissipation fins (16) are arranged on a side of the heat-conducting copper plate (14) away from the fins (15), and the heat dissipation fins (16) are all fixedly connected to the heat-conducting copper plate (14); The heat dissipation box (3) is provided with an air cooling mechanism (17) near the heat dissipation fins (16) for quickly blowing the heat dissipated by the heat dissipation fins (16) to the outside of the heat dissipation box (3).

5. A steam turbine lubrication mechanism as claimed in claim 4, characterized in that: The air cooling mechanism (17) comprises: The heat dissipation box (3) is fixedly connected with a mounting rod (18) near the heat dissipation fins (16); Four micromotors (19) are evenly arranged inside the mounting rod (18); the micromotors (19) are all fixedly connected to the mounting rod (18); and the output ends of the micromotors (19) are all fixedly connected to heat dissipation blades (20).

6. A steam turbine lubrication mechanism as claimed in claim 5, characterized in that: The heat dissipation box (3) is provided with a dustproof net (21) near the heat dissipation blades (20), and the dustproof net (21) is fixedly connected to the heat dissipation box (3).

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