CN217464039U - Generator oil groove lubricating oil centralized cooling station - Google Patents

Abstract

The utility model discloses a cooling station is concentrated to generator oil groove lubricating oil, the cooling station body includes more than one cooling chamber, be provided with cooling coil in each cooling chamber, cooling coil's both ends are lubricating oil entering end, discharge end respectively, lubricating oil entering end, discharge end communicate with one or more than one oil groove of generator through the pipeline respectively, under the effect of pressure device, the pipeline of lubricating oil entering end sucks the lubricating oil in the oil groove, carry out the heat exchange in entering cooling coil, the pipeline of rethread lubricating oil discharge end flows back to in this oil groove; in the cooling chamber, a cooling medium is introduced to perform heat exchange with the lubricating oil in the cooling coil. The utility model forms an independent lubricating oil centralized cooling station, can solve the cooling problem of the lubricating oil of the generator set in a centralized way, plays a role of centralized cooling, and also has the advantages of small occupied area, convenient arrangement, good cooling effect and the like; the length of the main shaft of the generator is effectively reduced, and the length of the main shaft can be shortened by about 10%.

Description

Generator oil groove lubricating oil centralized cooling station

Technical Field

The utility model relates to an auxiliary device of generator air conditioning system, concretely relates to cooling station is concentrated to generator oil groove lubricating oil.

Background

When the hydraulic or thermal power generator operates, a rotating shaft (main shaft) rotates at a high speed, a rotor of the generator is driven to rotate by the rotating shaft, and electric energy is generated between the rotor and the stator due to the cutting of magnetic lines of force to generate electricity. Because the rotating shaft rotates at a high speed, lubricating oil is needed for lubrication, and usually an oil groove chamber is arranged at the lower part of the rotating shaft, the lubricating oil is sealed in the oil groove chamber, and the lubricating oil has the functions of lubrication and heat dissipation. Generating set and lubricated oil groove structure thereof of prior art, as shown in fig. 1 for one section pivot 1, whole pivot (main shaft) is connected by the multistage pivot and is constituted, and axial length is longer, at main shaft axial direction, is provided with a plurality of oil grooves 2, mainly leads oil groove, thrust oil groove, leads oil groove, water down including leading oil groove, oil groove etc. lubricating oil 3 sets up in every oil groove 2, according to the technological requirement, lubricating oil 3's in every oil groove 2 model is different usually.

When a rotating shaft (main shaft) of the hydraulic or thermal power generator rotates, a bearing generates heat due to friction, lubricating oil in an oil groove is lubricated and dissipated, the temperature of the lubricating oil is gradually increased due to stirring when the rotating shaft (main shaft) rotates, the lubricating oil also needs to be cooled, the temperature of a bearing bush and the like is prevented from increasing, and the unit is required to run safely.

As shown in fig. 1, in the prior art, a cooler 4 is usually disposed in an oil tank 2 for cooling a lubricant 3, the cooler 4 mainly includes a plurality of copper pipes 5, the copper pipes 5 are immersed in the lubricant 3, and cooling water is introduced into the copper pipes 5 to perform a function of reducing the temperature of the lubricant through heat exchange between the low-temperature cooling water and the lubricant.

The cooling structure mainly has the following defects: 1. because the cooler is arranged in the oil tank, the length of the main shaft is correspondingly increased, and the main shaft of the generator is very long; 2. the length of the main shaft of the generator is increased, a series of problems are generated, the throw and vibration of the main shaft of the generator are greatly increased, the throw of the main shaft of the generator is large, internal parts and key parts of the hydraulic generator are damaged for the first time, and then cracks, crack enlargement and even fracture of the parts of the hydraulic generator occur; secondly, the connection among the machine set components is loosened to different degrees, the matching relation among the components is damaged, larger friction force is generated, and the chamber sweeping damage is easy to generate; or, the low-frequency pressure pulsation of the draft tube is caused, the resonance of a current system and a generator is caused, and the large-amplitude fluctuation occurs, even the unit is disassembled; 3. the manufacturing cost of the generator set is increased; 4. the construction and installation costs of the power plant are increased, etc.

Disclosure of Invention

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a generator oil groove lubricating oil centralized cooling station with excellent cooling effect to reduce the length of a main shaft of a generator, reduce the manufacturing cost of a generator set and reduce the construction and installation cost of a power station.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a centralized cooling station for lubricating oil in an oil tank of a generator comprises a cooling station body and is characterized in that the cooling station body comprises more than one cooling chamber, a cooling coil is arranged in each cooling chamber, two ends of each cooling coil are respectively provided with a lubricating oil inlet end and a lubricating oil outlet end, the lubricating oil inlet end and the lubricating oil outlet end are respectively communicated with one or more oil tanks of the generator through pipelines, under the action of a pressure device, the pipeline of the lubricating oil inlet end sucks the lubricating oil in the oil tanks, the lubricating oil enters the cooling coils for heat exchange, and then the lubricating oil flows back to the oil tanks through the pipelines of the lubricating oil outlet ends;

in the cooling chamber, a cooling medium is introduced to perform heat exchange with the lubricating oil in the cooling coil.

Thus, the utility model forms an independent lubricating oil centralized cooling station, can solve the cooling problem of the lubricating oil of the generator set in a centralized way, plays a role of centralized cooling, and also has the advantages of small occupied area, convenient arrangement, good cooling effect and the like; in addition, the length of the main shaft of the generator is effectively reduced, and the length of the main shaft can be shortened by about 10%.

Furthermore, the cooling medium is introduced into the cooling chamber through the cooling medium inlet and discharged out of the cooling chamber through the cooling medium outlet. Thus, the cooling medium in the cooling chamber is also circulated, thereby accelerating the flow of the cooling medium and improving the cooling effect.

Furthermore, a filtering device is arranged on the pipeline at the lubricating oil inlet end or the lubricating oil outlet end to filter oil in the pipeline. Like this, when lubricating oil in the oil groove was pumped, tiny impurity in the lubricating oil was also extracted from the oil groove, filtered impurity through filter equipment, can also solve in the oil groove problem that impurity deposits, influences the lubricating oil product, still reduces the time of shutting down the clearance oil groove by a wide margin.

Furthermore, every two adjacent cooling chambers are mutually sealed and isolated.

Furthermore, a partition plate is arranged between two adjacent cooling chambers, and a plurality of water through holes or water through grooves are formed in the partition plate. Therefore, the two adjacent cooling chambers are communicated, the cooling medium can flow through the water through holes or the water through grooves, the cooling medium and auxiliary components such as a liquid inlet pipe, a liquid outlet pipe and the like of the cooling medium are reduced, and the arrangement and the layout of pipelines are facilitated.

Further, the cooling medium inlet port is provided at a lower portion of the cooling chamber, and the cooling medium outlet port is provided at an upper portion of the cooling chamber.

Furthermore, the cooling coil is a copper pipe, an aluminum pipe, a cast iron pipe or a pipeline made of nonmetal materials.

In a word, the utility model discloses a cooling station is concentrated to generator oil groove lubricating oil has following advantage:

1. the length of a main shaft of the generator is effectively reduced; the length of the main shaft can be shortened by about 10%, and accordingly the swing and vibration generated during the operation of the generator can be better controlled, so that the service life of relevant parts of the generator is prolonged, and the safe operation of the generator set is influenced decisively.

2. Because the length of the main shaft of the generator is reduced, the manufacturing cost of the main shaft and the generator set can be reduced.

3. The application range of the generator set is expanded.

4. Effectively reducing the building cost of the matching equipment of the generator set and the capital construction cost of the power station.

5. Each power station can be provided with one cooling station, or one generator set can be provided with one cooling station, so that the cooling problem of the lubricating oil of the generator set can be solved in a centralized manner, the centralized cooling effect is achieved, and the advantages of small occupied area, convenience in arrangement, good cooling effect and the like are achieved.

6. When lubricating oil in the oil groove was sucked, tiny impurity in the lubricating oil was also extracted from the oil groove, and filter equipment through the pipeline filters impurity, can also solve in the oil groove impurity deposit, influence the problem of lubricating oil product, still reduces by a wide margin and shuts down the time of clearing up the oil groove.

Drawings

FIG. 1 is a schematic view of a lubricating oil sump of a generator according to the prior art;

fig. 2 is a partially enlarged view of fig. 1.

In the figure: 1-rotating shaft, 2-oil groove, 3-lubricating oil, 4-cooler, 5-copper pipe, 10-cooling station body, 11-cooling chamber, 12-cooling coil, 13-lubricating oil inlet end, 14-lubricating oil outlet end, 15-cooling medium inlet, 16-cooling medium outlet and 17-partition plate.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example (b):

as shown in fig. 2, the utility model discloses a cooling station is concentrated to generator oil groove lubricating oil, including cooling station body 10, cooling station body 10 includes more than one cooling chamber 11, be provided with cooling coil 12 in every cooling chamber 11, cooling coil 12's both ends set up respectively to lubricating oil entering end 13 and lubricating oil discharge end 14, lubricating oil entering end 13 and lubricating oil discharge end 14 are connected with the same oil groove of generator through the pipeline respectively, or a plurality of oil groove intercommunication more than one, under pressure device (like the force pump) suction effect, lubricating oil enters the pipeline suction oil groove interior lubricating oil of end 13, carry out the heat exchange and the cooling in the entering cooling coil 12, the pipeline of rethread lubricating oil discharge end 14 flows back in this oil groove, form the circulation.

A cooling medium, such as cooling water, is introduced into the cooling chamber 11, and the temperature of the lubricant in the cooling coil 12 is lowered by the heat exchange action between the cooling medium surrounding the cooling coil 12 and the high-temperature lubricant in the cooling coil 12. The cooling medium may be circulated by introducing the cooling medium into the cooling chamber 11 through the cooling medium inlet 15, exchanging heat, and then discharging the cooling medium out of the cooling chamber 11 through the cooling medium outlet 16.

Every two adjacent cooling chambers 11 are mutually sealed and isolated, each cooling chamber 11 corresponds to an oil groove of the generator set and is used for cooling lubricating oil in the oil groove, and cooling media in each cooling chamber 11 are respectively isolated and do not mutually circulate; in another structure, a partition 17 is provided between two adjacent cooling chambers 11, a plurality of water passages or water passages are provided in the partition 17, and the cooling medium chambers of the two adjacent cooling chambers 11 are communicated with each other through the water passages or water passages in the partition 17, so that the cooling medium can be circulated therebetween.

In the structure of the embodiment, when each cooling chamber 11 corresponds to more than one oil groove of the generator set, the lubricating oil in the more than one oil grooves is cooled, the limit condition is that the lubricating oil types of the oil grooves are the same or basically the same, meanwhile, the lubricating oil enters the cooling coil 12 of the cooling chamber 11 through suction, and after heat exchange, the cooling is carried out, and even if the lubricating oil is mixed in the pipeline, the lubricating oil does not have adverse effect on the self lubricating and cooling effect.

Set up filter equipment (not shown in the figure) on the pipeline of lubricating oil entering end 13 or lubricating oil discharge end 14, filter the fluid in the pipeline, solve the interior impurity of oil groove and deposit, influence the problem of lubricating oil product, when keeping high-quality lubricating oil, reduce the time of shutting down the clearance oil groove by a wide margin, more can reduce the work load of clearance oil groove.

The cooling medium inlet 15 may be disposed at a lower portion of the cooling chamber 11, and the cooling medium outlet 16 may be disposed at an upper portion of the cooling chamber 11 to form a structure of going in and out from the lower portion, thereby enhancing the cooling effect.

The cooling coil 12 may be a copper tube or other metal tubes, such as an aluminum tube or a cast iron tube, or a non-metal tube with good heat exchange performance.

The utility model simplifies the arrangement of the lubricating oil cooling structure of the generator, cancels the cooler of each oil groove, optimizes the structure, inputs the lubricating oil of each oil groove of the generator into one cooling chamber 11 respectively, and cools through heat exchange; the most obvious technical effect is that the height of the rotating shaft of the generator is reduced, and the length of the main shaft can be shortened by about 10%.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and although the applicant has described the present invention in detail with reference to the preferred embodiments, those skilled in the art should understand that those modifications or equivalent substitutions to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, all should be covered in the scope of the claims of the present invention.

Claims (7)

1. A centralized cooling station for lubricating oil in an oil tank of a generator comprises a cooling station body (10) and is characterized in that the cooling station body (10) comprises more than one cooling chamber (11), a cooling coil (12) is arranged in each cooling chamber (11), two ends of each cooling coil (12) are respectively provided with a lubricating oil inlet end (13) and a lubricating oil outlet end (14), the lubricating oil inlet ends (13) and the lubricating oil outlet ends (14) are respectively communicated with one or more oil tanks of the generator through pipelines, under the action of a pressure device, the pipeline of each lubricating oil inlet end (13) sucks the lubricating oil in the oil tank, the lubricating oil enters the cooling coils (12) for heat exchange, and then the lubricating oil flows back to the oil tanks through the pipelines of the lubricating oil outlet ends (14);

a cooling medium is introduced into the cooling chamber (11) to exchange heat with the lubricating oil in the cooling coil (12).

2. Generator sump lubrication oil central cooling station according to claim 1, wherein said cooling medium is introduced into the cooling chamber (11) through a cooling medium inlet (15) and discharged from the cooling chamber (11) through a cooling medium outlet (16).

3. Generator sump oil centralized cooling station according to claim 1, wherein a filtering device is provided on the conduit of the oil inlet end (13) or the oil outlet end (14) to filter the oil in the conduit.

4. Generator sump lubrication oil centralized cooling station according to any of claims 1-3, wherein every two adjacent cooling chambers (11) are sealed from each other.

5. Generator sump lubrication oil centralized cooling station according to any of claims 1-3, characterised in that between two adjacent cooling chambers (11) a partition plate (17) is arranged, the partition plate (17) being provided with a plurality of water through holes or water through grooves.

6. Generator sump lubrication oil centralized cooling station according to claim 2, characterized in that the cooling medium inlet (15) is arranged in the lower part of the cooling chamber (11) and the cooling medium outlet (16) is arranged in the upper part of the cooling chamber (11).

7. The generator sump lubrication oil centralized cooling station according to claim 4, wherein the cooling coil (12) is a copper pipe, an aluminum pipe, a cast iron pipe, or a pipe made of a non-metal material.

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