CN215831113U

CN215831113U - Novel gear box lubricating system

Info

Publication number: CN215831113U
Application number: CN202121985894.6U
Authority: CN
Inventors: 牛永春; 周国贞; 杨芝刚
Original assignee: Soliner Nanjing Intelligent Technology Co ltd
Current assignee: Nanjing Xunlian Hydraulic Technology Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-02-15
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a novel gear box lubricating system, which comprises a pump set unit, a valve group unit and a filtering unit, the oil extraction unit, the cooling unit, distribution unit and gear box, the gear box is linked together through the import of pipeline with the pump package unit, the export of pump package unit is linked together through the import of pipeline with valves group unit, the export of valves group unit is linked together through the import of pipeline with the filter unit, the export of filter unit is linked together through the import of fourth pipeline with the cooling unit, the export of cooling unit is linked together through the import of fifth pipeline with distribution unit, the export of filter unit is connected through the import of seventh pipeline with distribution unit, distribution unit's export is connected with each lubricated point of gear box, the pipeline intercommunication between the import of the second oil drain valve of oil extraction unit and pump package unit and the filter unit, the export and the second oil drain pipe intercommunication of second oil drain unit. The utility model can quickly start the fan under the low temperature condition, thereby realizing the maximization of economic benefit.

Description

Novel gear box lubricating system

Technical Field

The utility model belongs to the technical field of wind power, and particularly relates to a novel gear box lubricating system.

Background

The fan gear box lubricating and cooling system is an important system of the wind generating set, and as the machine type is larger, the megawatt number of the gear box is increased, and the flow, the filtering capacity and the cooling power of the corresponding lubricating system are increased. Under the cold weather condition, the gear box is moved for the first time or is shut down for a long time and then is restarted, because the oil that saves in the system is more, the position ratio at oil is more dispersed, oil in the gear box can be heated up very fast, but the unable rapid heating up of oil in the cooling unit reaches suitable temperature, lead to oil in the gear box can not be cooled down, the direct overtemperature warning is shut down, can only reduce the generating power under the normal condition, slowly with hot oil with strike cold oil position, but the length of consuming time differs, and then the loss generated energy.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a novel gearbox lubricating system which can be started quickly in a low-temperature environment and has a longer service life.

The technical scheme adopted by the utility model is as follows:

a novel gear box lubricating system comprises a pump group unit, a valve group unit, a filtering unit, an oil discharge unit, a cooling unit, a distribution unit and a gear box, wherein the gear box is communicated with an inlet of the pump group unit through a pipeline, an outlet of the pump group unit is communicated with an inlet of the valve group unit through a pipeline, an outlet of the valve group unit is communicated with an inlet of the filtering unit through a pipeline, an outlet of the filtering unit is communicated with an inlet of the cooling unit through a fourth pipeline, an outlet of the cooling unit is communicated with an inlet of the distribution unit through a fifth pipeline, an outlet of the filtering unit is connected with an inlet of the distribution unit through a seventh pipeline, a temperature control valve is arranged on the seventh pipeline, an outlet of the distribution unit is connected with each lubricating point of the gear box, the oil discharge unit comprises a second oil discharge pipe, a first oil discharge pipe and a first oil discharge valve for discharging oil in the cooling unit, the valve group unit is communicated with the gear box through a second oil discharge pipe, the second oil discharge pipe is communicated with a fourth pipeline through the first oil discharge pipe, the first oil discharge valve is arranged on the first oil discharge pipe, an oil second oil discharge valve used for discharging oil in the filtering unit is arranged in the valve group unit, the inlet of the second oil discharge valve is communicated with a pipeline between the pump group unit and the filtering unit, and the outlet of the second oil discharge valve is communicated with the second oil discharge pipe.

In the utility model, the pump unit comprises a first pipeline, a second pipeline, a mechanical pump and an electric oil pump, wherein the mechanical pump is connected with an output shaft of a gear box through a coupler, an inlet of the mechanical pump is communicated with the gear box through the first pipeline, the electric oil pump is communicated with the gear box through a third pipeline, and the electric oil pump is connected with a motor through the coupler.

Further, the second oil drain pipe is a system overflow pipe.

Preferably, the dispensing unit comprises a pressure gauge assembly comprising a pressure gauge and a shut-off valve, and a temperature and pressure sensor.

In the utility model, the filtering unit comprises one or more filters connected in parallel, and a sixth pipeline for discharging gas in the filters is arranged in the filtering unit.

In the utility model, the cooling unit comprises one or more coolers connected in parallel, and the cooling unit is internally provided with no bypass valve.

Furthermore, the cooler is an air cooler, and the cooler is connected with a motor.

In the present invention, a plurality of check valves are provided in the piping of the system.

The utility model has the following beneficial effects:

the utility model has simple structure and unique principle, can discharge most of the stored oil in the lubricating system after the system is shut down, ensures that the filtering unit and the cooling unit in the system keep smooth, has small system resistance when being restarted, can quickly start the fan under the low-temperature condition and quickly enter a rated power generation state, realizes the maximization of the economic benefit of the fan and prolongs the service life of the system.

Drawings

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

in the figure: 1-a pump unit; 2-a valve block unit; 3-a filtration unit; 4-an oil discharge unit; 5-a cooling unit; 6-a dispensing unit; 7-a first pipeline; 8-a second pipeline; 9-a third pipeline; 10-a second oil drain pipe; 11-a first drain pipe; 12-a sixth pipeline; 13-a seventh conduit; 14-a fourth line; 15-a fifth pipeline; 16-a mechanical pump; 17-an electric oil pump; 18-a first drain valve; 19-a second oil drain valve; 20-a pressure gauge assembly; 21-temperature pressure sensor; 22-a cooler; 23-a temperature control valve; 24-gearbox.

Detailed Description

The utility model will be further described with reference to the accompanying drawings in which:

as shown in figure 1, the utility model comprises a pump unit 1, a valve group unit 2, a filtering unit 3, an oil discharge unit 4, a cooling unit 5, a distribution unit 6 and a gear box 24, wherein the gear box 24 is communicated with an inlet of the pump unit 1 through a pipeline, an outlet of the pump unit 1 is communicated with an inlet of the valve group unit 2 through a pipeline, an outlet of the valve group unit 2 is communicated with an inlet of the filtering unit 3 through a pipeline, an outlet of the filtering unit 3 is communicated with an inlet of the cooling unit 5 through a fourth pipeline 14, an outlet of the cooling unit 5 is communicated with an inlet of the distribution unit 6 through a fifth pipeline 15, an outlet of the filtering unit 3 is connected with an inlet of the distribution unit 6 through a seventh pipeline 13, a temperature control valve 23 is arranged on the seventh pipeline 13, an outlet of the distribution unit 6 is connected with each lubricating point of the gear box 24, the oil discharge unit 4 comprises a second oil discharge pipe 10, First oil drain pipe 11 and the first oil drain valve 18 that is arranged in discharging fluid in the cooling unit 5, valves unit 2 is through second oil drain pipe 10 and gear box 24 intercommunication, second oil drain pipe 10 is through first oil drain pipe 11 and fourth pipeline 14 intercommunication, first oil drain valve 18 sets up on first oil drain pipe 11, be equipped with the second oil drain valve 19 that is arranged in discharging fluid in the filter unit 3 in the valves unit 2, the import of second oil drain valve 19 and the pipeline intercommunication between pump package unit 1 and the filter unit 3, the export and the second oil drain pipe 10 intercommunication of second oil drain valve 19.

If the pump unit 1 only adopts the electric oil pump 17 to provide lubricating oil, once the electric oil pump 17 breaks down, the gear box 24 cannot stop running immediately, the bearing, the gear pair and the like in the gear box 24 cannot be lubricated in time, the phenomenon of overhigh temperature is possibly caused, meanwhile, the gear box 24 gradually develops towards the direction of high power, and the required lubricating flow is increased more and more, so the pump unit 1 is additionally provided with the mechanical pump 16 directly driven by the gear box 24 to provide the lubricating oil, the pump unit 1 also comprises a first pipeline 7 and a second pipeline 8, the mechanical pump 16 is connected with the output shaft of the gear box 24 through a coupler, the inlet of the mechanical pump 16 is communicated with the gear box 24 through the first pipeline 7, the electric oil pump 17 is communicated with the gear box 24 through a third pipeline 9, and the electric oil pump 17 is connected with a motor through a coupler.

Preferably, the first pipeline 7 and the third pipeline 9 can be provided with suction port ball valves, the suction port ball valves are directly installed on the gear box 24, the gear box has a signaling function, and meanwhile, the gear box has a locking device, so that the ball valves can be closed in the maintenance process of a lubricating system, and lubricating oil in the box body of the gear box 24 is prevented from flowing out. Check valves can be arranged on oil outlet pipelines of the mechanical pump 16 and the electric oil pump 17 to prevent lubricating oil from reversely impacting the mechanical pump 16 and the electric oil pump 17 to cause damage. The coupler is a torsional elastic coupler, has a failure protection function, and can effectively damp and reduce vibration and impact generated in the operation process.

In the present invention, the second oil discharge pipe 10 is also a system overflow pipe, so as to avoid the over-high pressure of the system, and the pipe diameter of the oil discharge pipe is far smaller than that of the main oil pipe.

The dispensing unit 6 comprises a pressure gauge assembly 20 and a temperature pressure sensor 21, the pressure gauge assembly 20 comprising a pressure gauge and a shut-off valve.

The filter is used for filtering metal powder generated by abrasion of the gear box 24 and rubber impurities lost by a sealing element in the lubricating oil, so that the oil reaching each lubricating point through the distribution unit 6 is kept clean, and the service life of each element and the service life of the lubricating oil are guaranteed. In the present device, the filtering unit 3 comprises one or more filters connected in parallel, and a sixth pipeline 12 for discharging gas in the filters is arranged in the filtering unit 3.

Preferably, the filter unit 3 is a double filter, a fine filter and a coarse filter are connected in series to prevent unfiltered lubricating oil from entering the gear box 24, and the sixth pipeline 12 is an exhaust hose for exhausting gas from the filter.

In the device, the cooling unit 5 comprises one or more coolers 22 connected in parallel, preferably, the coolers 22 in the system are air coolers which have the cooling function on lubricating oil, the lubricating system can dissipate heat generated in the operation process of the gear box 24 to the surrounding environment through the air coolers, and the coolers 22 are connected with the motor cooling unit 5 without a bypass valve.

The temperature control valve 23 is arranged at the outlet of the filtering unit 3, when the temperature of the oil is lower than 45 ℃, the temperature control valve 23 is opened, and most of the lubricating oil enters the distribution unit from the seventh pipeline 13 through the temperature control valve 23; when the temperature of the oil is between 45 ℃ and 60 ℃, the temperature control valve 23 is gradually closed, and more lubricating oil enters the distribution unit 6 through the cooler 22; when the temperature of the oil is higher than 60 ℃, the temperature control valve 23 is completely closed, and the lubricating oil completely enters the distribution unit from the cooler 22.

In actual arrangement, the cooling unit 5 is located at the highest position of the system, the distribution unit 6, the filtering unit 3 and the valve group unit 2 are arranged downwards in sequence, the interface of the second oil discharge pipe 10 and the gear box 24 is located below the filtering unit 3, so that oil can flow back to the gear box 24, the sixth pipeline 12 is located at the highest position of the filtering unit 3, and oil cannot be discharged after the system is shut down.

A plurality of check valves are arranged in the pipeline of the system to prevent oil from flowing back.

The temperature and pressure sensor 21 comprises a temperature sensor and a pressure sensor which are both arranged at a distributor of the gearbox 23, the pressure sensor is used for detecting oil pressure at the distributor, the temperature sensor is used for detecting oil temperature at an inlet of the gearbox 23, the oil temperature at the inlet of the gearbox 23 is required to be less than the maximum oil temperature allowed by the gearbox 23, otherwise, the gearbox 23 reports a high-temperature fault, and power generation is limited. The pressure gauge assembly comprises a pressure gauge and a stop valve, and is arranged at the distributor and used for visually observing the pressure at the distributor.

The using process of the utility model is as follows:

when the system normally operates, the first oil discharge valve 18 and the second oil discharge valve 19 are in a closed state, oil pumped out by the pump set unit 1 does not directly return to the gear box 24, enters the filtering unit 3 through the valve set unit 2, enters the cooling unit 5 for cooling after being filtered, and then enters each lubricating point of the gear box 24 through the distribution unit 6.

When the system is in a shutdown state, because the atmospheric pressure inside and outside the system is balanced, and a plurality of check valves are arranged in an oil way, oil in the system cannot flow back to the gear box 24, after the first oil drain valve 18 and the second oil drain valve are opened, the oil in the filtering unit 3 and the cooling unit 5 can flow back to the gear box 24 through the first oil drain pipe 11 and the second oil drain pipe 10, the sixth pipeline is located at the highest position of the filtering unit 3, the oil cannot be discharged, under a low-temperature environment, when the system is restarted, the oil resistance is small, the oil way of the whole system can be quickly opened, and the condition that the fan enters a full-sending state at the highest speed is ensured.

Other processes of the present invention may employ existing techniques.

While the preferred embodiments of the present invention have been illustrated, further modifications of the utility model will occur to those skilled in the art and are intended to be included within the scope of the present invention.

Claims

1. A novel gear box lubricating system is characterized by comprising a pump group unit (1), a valve group unit (2), a filtering unit (3), an oil discharge unit (4), a cooling unit (5), a distribution unit (6) and a gear box (24), wherein the gear box (24) is communicated with an inlet of the pump group unit (1) through a pipeline, an outlet of the pump group unit (1) is communicated with an inlet of the valve group unit (2) through a pipeline, an outlet of the valve group unit (2) is communicated with an inlet of the filtering unit (3) through a pipeline, an outlet of the filtering unit (3) is communicated with an inlet of the cooling unit (5) through a fourth pipeline (14), an outlet of the cooling unit (5) is communicated with an inlet of the distribution unit (6) through a fifth pipeline (15), and an outlet of the filtering unit (3) is connected with an inlet of the distribution unit (6) through a seventh pipeline (13), the oil-water separator is characterized in that a temperature control valve (23) is arranged on the seventh pipeline (13), an outlet of the distribution unit (6) is connected with each lubricating point of the gear box (24), the oil discharge unit (4) comprises a second oil discharge pipe (10), a first oil discharge pipe (11) and a first oil discharge valve (18) used for discharging oil in the cooling unit (5), the valve group unit (2) is communicated with the gear box (24) through the second oil discharge pipe (10), the second oil discharge pipe (10) is communicated with the fourth pipeline (14) through the first oil discharge pipe (11), the first oil discharge valve (18) is arranged on the first oil discharge pipe (11), a second oil discharge valve (19) used for discharging oil in the filtering unit (3) is arranged in the valve group unit (2), an inlet of the second oil discharge valve (19) is communicated with a pipeline between the pump group unit (1) and the filtering unit (3), the outlet of the second oil drain valve (19) is communicated with the second oil drain pipe (10).

2. The novel gearbox lubrication system as claimed in claim 1, characterized in that the pump package unit (1) comprises a first pipeline (7), a second pipeline (8), a mechanical pump (16) and an electric oil pump (17), the mechanical pump (16) is connected with the output shaft of the gearbox (24) through a coupling, the inlet of the mechanical pump (16) is communicated with the gearbox (24) through the first pipeline (7), the electric oil pump (17) is communicated with the gearbox (24) through a third pipeline (9), and the electric oil pump (17) is connected with a motor through a coupling.

3. A novel gearbox lubrication system as claimed in claim 1, characterised in that said second oil drain pipe (10) is a system overflow pipe.

4. A novel gearbox lubrication system as claimed in claim 1, characterised in that said distribution unit (6) comprises a pressure gauge assembly (20) and a temperature pressure sensor (21), said pressure gauge assembly (20) comprising a pressure gauge and a shut-off valve.

5. A novel gearbox lubrication system as claimed in claim 1, characterised in that said filter unit (3) comprises one or more filters connected in parallel, said filter unit (3) being provided with a sixth conduit (12) for the evacuation of gas from the filter.

6. A novel gearbox lubrication system as claimed in claim 1, characterised in that the cooling unit (5) comprises one or more coolers (22) in parallel, the cooling unit (5) being devoid of a bypass valve.

7. A novel gearbox lubrication system as claimed in claim 6, characterised in that said cooler (22) is an air cooler, said cooler (22) being connected to an electric motor.

8. A novel gearbox lubrication system as defined in claim 1 wherein a plurality of check valves are provided in the piping of the system.