CN216431212U

CN216431212U - Oil supply device for lower guide bearing of generator

Info

Publication number: CN216431212U
Application number: CN202123255097.5U
Authority: CN
Inventors: 陈梁; 吴洁云; 孙刚
Original assignee: Zhejiang Yipu Lubrication Equipment Manufacturing Co ltd
Current assignee: Zhejiang Yipu Lubrication Equipment Manufacturing Co ltd
Priority date: 2021-12-23
Filing date: 2021-12-23
Publication date: 2022-05-03
Anticipated expiration: 2031-12-23

Abstract

The utility model discloses a generator lower guide bearing oil supply device, which comprises a base; the plate cooler is characterized in that an oil inlet and a water outlet which are positioned at the upper end of the plate cooler, and an oil outlet and a water supply port which are positioned at the lower part of the plate cooler are arranged on the plate cooler; and the base is also provided with a plurality of supporting structures. The utility model discloses a through setting up oil inlet and outlet in the plate cooler upper end, set up oil-out and supply port at the plate cooler lower extreme, make oil from last down flow, and the cooling water is then from up flowing down, make oil contact at the in-process that down flows and the cooling water that the temperature descends gradually, thereby make the cooling effect of lubricating oil better, and also can not lead to the lubricating oil temperature more and more high under the condition of long-time use, thereby guarantee the normal establishment of oil film, increase the life of equipment simultaneously.

Description

Oil supply device for lower guide bearing of generator

Technical Field

The utility model relates to a bearing oil supply unit specifically indicates a generator leads bearing oil supply unit down.

Background

In modern power plants, whether coal-fired power generation, gas power generation, nuclear power generation or hydroelectric power generation, in order to improve the economy, the units are developed in large scale, and bearings for supporting the rotors of the units all adopt sliding bearings and are required to be provided with a forced circulation lubricating oil supply system. The main functions of the lubricating oil and the bearing oil are to provide continuous lubricating oil for the bearings of the unit, ensure that a dynamic pressure oil film is formed, prevent a shaft from directly contacting the bearings and generating dry friction, and take away heat of the bearings through the lubricating oil to play a role in cooling and lubricating the bearings, but if the lubricating oil is poor in cooling effect in the long-time circulating use process, the temperature of the lubricating oil is higher and higher, the oil temperature of the lubricating oil has great influence on the establishment of the bearing oil film, according to the relevant theory of oil film establishment, the lubricating oil depends on the clearance of the bearing bush and the cooling degree of the oil, and under the conditions of poor bearing bush grinding quality and poor cooling, the lubricating oil is unsafe during the operation of the unit and sometimes even causes a bush burning accident. Therefore, the oil supply device for the lower guide bearing of the generator is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lead bearing oil supply unit under generator in order to solve above problem.

In order to achieve the purpose, the utility model provides a generator lower guide bearing oil supply device which comprises a base, two screw pumps, a motor, a filter and a plate cooler, wherein the two screw pumps are arranged on the base and are used for one by one, the motor is arranged on the screw pumps and is used for driving the screw pumps, the filter is connected with the screw pumps through pipelines, and the plate cooler is connected with the filter through pipelines; the plate cooler is characterized in that an oil inlet and a water outlet which are positioned at the upper end of the plate cooler, and an oil outlet and a water supply port which are positioned at the lower part of the plate cooler are arranged on the plate cooler; and the base is also provided with a plurality of supporting structures.

Further preferably, the support structure comprises a support base mounted on the base for supporting the screw pump and a filter holder mounted on the base for supporting the filter.

Preferably, the oil inlet is connected with the filter through a pipeline, and the oil outlet is connected with an oil outlet pipeline; the water supply port is connected with a water supply pipeline, and the water outlet is connected with a water outlet pipeline; ball valves are arranged on the oil outlet pipeline, the water supply pipeline and the water outlet pipeline.

Further preferably, the screw pump is further connected with an oil suction pipe, and ball valves are mounted on the oil suction pipe, a pipeline connecting the screw pump and the filter, and a pipeline connecting the filter and the plate cooler.

Preferably, a pressure gauge and a pressure gauge sampling valve are installed on a pipeline connecting the screw pump and the ball valve, and a pressure gauge is also installed on a pipeline connecting the ball valve and the filter.

Further preferably, the filter is provided with temperature measuring resistors on a pipeline connected with the oil inlet and an oil outlet pipeline, and the oil outlet pipeline is also provided with a pressure gauge.

Further preferably, the base is further provided with a plurality of lifting lugs.

The utility model discloses a set up oil inlet and outlet in plate cooler upper end, set up oil-out and supply port at plate cooler lower extreme, make oil flow from top to bottom, and cooling water flows from bottom to top, make oil contact with the cooling water that the temperature descends gradually in the process that flows down, thus make the cooling effect of lubricating oil better, and can not lead to the lubricating oil temperature higher and higher yet under the condition of long-time use, thus guarantee the normal establishment of oil film, increase the life of equipment simultaneously;

through the arrangement of the supporting structure, the screw pump and the filter can be conveniently and fixedly installed and can be supported;

through set up a plurality of lugs on the base, be convenient for lift by crane equipment and hoist whole oil supply unit, be convenient for transport and remove.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

fig. 2 is another view-angle structure diagram of the present invention;

fig. 3 is a schematic top view of the present invention.

Illustration of the drawings: 1. a base; 2. a screw pump; 21. an oil suction pipe; 3. a motor; 4. a filter; 5. a plate cooler; 51. an oil inlet; 52. a water outlet; 53. an oil outlet; 54. a water supply port; 55. an oil outlet pipeline; 56. a water supply line; 57. a water outlet pipeline; 6. a support structure; 61. a supporting seat; 62. a filter holder; 7. a ball valve; 8. a pressure gauge; 9. a sampling valve of the pressure gauge; 10. a temperature measuring resistor; 11. and (7) lifting lugs.

Detailed Description

The following description will be made with reference to the accompanying drawings for a lower guide bearing oil supply device of a generator according to the present invention.

Referring to fig. 1-3, the generator lower guide bearing oil supply device of the present embodiment includes a base 1, two screw pumps 2 mounted on the base 1 for one use, a motor 3 mounted on the screw pumps 2 for driving the screw pumps 2, a filter 4 connected to the screw pumps 2 through a pipeline, and a plate cooler 5 connected to the filter 4 through a pipeline; the device is characterized in that the plate cooler 5 is provided with an oil inlet 51 and a water outlet 52 which are positioned at the upper end of the plate cooler 5, an oil outlet 53 and a water supply port 54 which are positioned at the lower part of the plate cooler 5; the base 1 is also provided with a plurality of supporting structures 6; the oil inlet 51 and the water outlet 52 are arranged at the upper end of the plate cooler 5, the oil outlet 53 and the water supply port 54 are arranged at the lower end of the plate cooler 5, so that the oil flows from top to bottom, the cooling water flows from bottom to top, the oil temperature is highest when the lubricating oil just enters the plate cooler 5, the lubricating oil is cooled by the cooling water in the downward flowing process, the temperature of the lubricating oil is gradually reduced, the cooling water flows from bottom to bottom, the water temperature is gradually reduced from top to bottom, the oil is contacted with the cooling water with the gradually reduced temperature in the downward flowing process, the cooling effect of the lubricating oil is better, the lubricating oil temperature is not higher and higher under the condition of long-time use, the normal establishment of an oil film is ensured, and the service life of equipment is prolonged; through the arrangement of the supporting structure 6, the screw pump 2 and the filter 4 can be conveniently and fixedly installed and can be supported.

Further, referring to fig. 1-2, the support structure 6 includes a support base 61 mounted on the base 1 for supporting the screw pump 2 and a filter holder 62 mounted on the base 1 for supporting the filter 4, the screw pump 2 being supported and fixed by the support base, and the filter 4 being mounted and supported by the filter holder 62.

Further, referring to fig. 1 to 3, the oil inlet 51 is connected to the filter 4 through a pipeline, and the oil outlet 53 is connected to an oil outlet pipeline 55; the water supply port 54 is connected with a water supply pipeline 56, and the water outlet port 52 is connected with a water outlet pipeline 57; the oil outlet pipeline 55, the water supply pipeline 56 and the water outlet pipeline 57 are all provided with ball valves 7; the cooled lubricating oil is supplied to the lower guide bearing through an oil outlet pipeline 55; a water supply facility is connected to the water supply line 56, and cooling water is fed into the plate cooler 5 through the water supply port 54, overflows through the water discharge port 52 to the water discharge line 57, and is discharged.

Further, as shown in fig. 1-3, the screw pump 2 is further connected with an oil suction pipe 21, the oil suction pipe 21, a pipeline connecting the screw pump 2 and the filter 4, and a pipeline connecting the filter 4 and the plate cooler 5 are all provided with ball valves 7, and by connecting the oil suction pipe 21 with the oil tank, the lubricating oil is sucked out of the oil tank through the oil suction pipe 21 by the screw pump 2; the ball valve 7 is used for adjusting the flow and the opening and closing of the flow path.

Further, as shown in fig. 2-3, a pressure gauge 8 and a pressure gauge sampling valve 9 are installed on a pipeline connecting the screw pump 2 and the ball valve 7, and a pressure gauge 8 is also installed on a pipeline connecting the ball valve 7 and the filter 4; through the setting of manometer 8, the lubricating oil pressure value of real-time detection position to be convenient for adjust flow and adjust pressure through ball valve 7.

Further, referring to fig. 2-3, temperature measuring resistors 10 are mounted on a pipeline connecting the filter 4 with the oil inlet 51 and an oil outlet pipeline 55, and a pressure gauge 8 is also mounted on the oil outlet pipeline 55; the temperature of the lubricating oil before and after cooling is detected by the temperature measuring resistor 10, and the temperature is detected in real time.

Further, referring to fig. 1, a plurality of lifting lugs 11 are further installed on the base 1, and the lifting equipment can conveniently lift the whole oil supply device by arranging the plurality of lifting lugs 11 on the base 1, so that the transportation and the movement are convenient.

The utility model discloses a working process: referring to fig. 1-3, first, the oil suction pipe 21 is connected to the oil tank, the oil outlet pipe 55 is connected to the generator, and the water supply pipe 56 and the water outlet pipe 57 are connected to the circulating water network; and then starting one of the screw pumps 2, pumping lubricating oil out of the oil tank by the screw pump 2, discharging the lubricating oil to the filter 4 through a pipeline, filtering the lubricating oil by the filter 4, discharging the lubricating oil to the oil inlet 51 through the pipeline, flowing into the plate cooler 5 through the oil inlet 51, flowing to the oil outlet 53 from top to bottom in the plate cooler 5, and cooling the lubricating oil through cooling water, so that the cooled lubricating oil is discharged to a lower guide bearing of the generator to supply the lubricating oil to the lower guide bearing of the generator.

The scope of the present invention is not limited to the above embodiments and their variations. The present invention is not limited to the above embodiments, and other modifications and substitutions may be made by those skilled in the art.

Claims

1. A generator lower guide bearing oil supply device comprises a base (1), two screw pumps (2) which are arranged on the base (1) for standby use, a motor (3) which is arranged on the screw pumps (2) and used for driving the screw pumps (2), a filter (4) which is connected with the screw pumps (2) through pipelines, and a plate cooler (5) which is connected with the filter (4) through pipelines; the device is characterized in that the plate cooler (5) is provided with an oil inlet (51) and a water outlet (52) which are positioned at the upper end of the plate cooler (5), an oil outlet (53) and a water supply port (54) which are positioned at the lower part of the plate cooler (5); and the base (1) is also provided with a plurality of supporting structures (6).

2. The oil supply device for the lower guide bearing of the generator as claimed in claim 1, wherein: the supporting structure (6) comprises a supporting seat (61) which is arranged on the base (1) and used for supporting the screw pump (2) and a filter support (62) which is arranged on the base (1) and used for supporting the filter (4).

3. The oil supply device for the lower guide bearing of the generator as claimed in claim 1, wherein: the oil inlet (51) is connected with the filter (4) through a pipeline, and the oil outlet (53) is connected with an oil outlet pipeline (55); the water supply port (54) is connected with a water supply pipeline (56), and the water discharge port (52) is connected with a water discharge pipeline (57); and the oil outlet pipeline (55), the water supply pipeline (56) and the water outlet pipeline (57) are all provided with ball valves (7).

4. The oil supply device for the lower guide bearing of the generator as claimed in claim 1, wherein: the screw pump (2) is further connected with an oil suction pipe (21), and ball valves (7) are mounted on pipelines of the oil suction pipe (21), the screw pump (2) and the filter (4) and pipelines of the filter (4) and the plate cooler (5).

5. The oil supply device for the lower guide bearing of the generator as claimed in claim 4, wherein: and a pressure gauge (8) and a pressure gauge sampling valve (9) are arranged on a pipeline connecting the screw pump (2) and the ball valve (7), and the pressure gauge (8) is also arranged on a pipeline connecting the ball valve (7) and the filter (4).

6. The oil supply device for the lower guide bearing of the generator as claimed in claim 3, wherein: temperature measuring resistors (10) are mounted on a pipeline connected with the filter (4) and the oil inlet (51) and an oil outlet pipeline (55), and a pressure gauge (8) is also mounted on the oil outlet pipeline (55).

7. The oil supply device for the lower guide bearing of the generator as claimed in claim 1, wherein: and the base (1) is also provided with a plurality of lifting lugs (11).