CN202274270U

CN202274270U - Bearing concentration lubricating system for large-scale wind turbines

Info

Publication number: CN202274270U
Application number: CN2011203047302U
Authority: CN
Inventors: 苗向文
Original assignee: Sinovel Wind Group Co Ltd
Current assignee: Sinovel Wind Group Co Ltd
Priority date: 2011-08-19
Filing date: 2011-08-19
Publication date: 2012-06-13
Anticipated expiration: 2021-08-19

Abstract

The utility model discloses a bearing concentration lubricating system for large-scale wind turbines, wherein a variable-propeller bearing and a yaw bearing are respectively provided with a bearing race and a bearing tooth flank. A main bearing is also provided with a bearing race. The lubricating operation on the bearing races is performed through a single-line type lubricating system. The lubricating operation on the bearing tooth flanks is performed through a progressive type lubricating system. According to the utility model, since reasonable lubricating systems are adopted for lubricating different parts of bearings of wind turbines, the bearing concentration lubricating system has the advantages of low cost and accurate lubricating effect.

Description

A kind of large-scale wind electricity unit bearing centralized lubrication system

Technical field

The utility model relates to a kind of lubrication system, particularly a kind of large-scale wind electricity unit bearing centralized lubrication system.

Background technique

Main bearing is the transmission part of core in the wind power generating set, comprising: pitch variable bearings, driftage bearing and main bearing.Generally, there is 1/3rd bearing failure can trace back to the problem of lubricated aspect, is mainly reflected in over-lubrication, lack of lubrication and grease contaminated etc.For guaranteeing the reliability of unit, most important to the reasonable lubrication of bearing.Pitch variable bearings and driftage common inner ring of bearing or outer astragal tooth in the wind-powered electricity generation unit, lubricated lubricated (lubricated pitch variable bearings raceway, driftage bearing race and main bearing raceway) and the flank of tooth of mainly dividing into bearing race lubricated (the lubricated pitch variable bearings flank of tooth and the driftage bearing flank of tooth) of the medium-and-large-sized bearing of wind-powered electricity generation unit like this.Conventional artificial stuffing lubricating method is that manual work is lubricated by lubricating point stuffing successively; Blower variable-pitch bearing lubrication point is more; This lubricating system workload is big, in operating process, causes environmental pollution easily, over-lubrication or lubricated inadequate situation also can occur.At present wind-powered electricity generation unit centralized lubrication adopt usually single automatic laddering lubricated or automatically single-line type lubricate, have shortcomings such as the unreasonable and cost height of lubricating system.

Therefore, how to overcome the problem that existing large-scale wind electricity set pitch control bearing, driftage bearing and main bearing lubrication exist, be those skilled in the art's research direction place.

Summary of the invention

The main purpose of the utility model provides a kind of large-scale wind electricity unit bearing centralized lubrication system, and it is used for wind-powered electricity generation set pitch control bearing, driftage bearing and main bearing are carried out reasonable lubrication.

In order to achieve the above object; The utility model provides a kind of large-scale wind electricity unit bearing centralized lubrication system; Pitch variable bearings, driftage bearing all have the bearing race and the bearing flank of tooth; Main bearing has bearing race, the lubricated single-line type lubrication system that adopts of described bearing race, the laddering lubrication system of the lubricated employing of the described bearing flank of tooth.

In the preferred implementation; Described single-line type lubrication system comprises high pressure grease pump, selector valve, pipeline, combined type single-line type distributor; Described high pressure grease pump is the power source of single-line type lubrication system, and described selector valve is installed on the described high pressure grease pump, and said combined type single-line type distributor is made up of a plurality of single-line type distributors; And be fixed on said bearing race one side; Said pipeline is together in series high pressure grease pump and said a plurality of single line distributor, and said a plurality of each oil outlets of single line distributor are connected with each oil outlet of said bearing race by said pipeline again, forms lubrication passages.

In the preferred implementation, described selector valve is the external selector valve.

In the preferred implementation, also comprise a terminal pressure switch, said terminal pressure switch is installed in before last single line distributor.

In the preferred implementation, also comprise a mechanical compression table, said mechanical compression table is installed in before last single line distributor.

In the preferred implementation; Described laddering lubrication system comprises: high pressure grease pump, pipeline, progressive distributor, jam signal prober, lubricant transfer pinion, bearing actuation gear; Said high pressure grease pump is the power source of lubrication system; Described progressive distributor is fixed on said high pressure grease pump one side, and said jam signal prober is installed in an outlet of said progressive distributor, and said pipeline couples together said high pressure grease pump and said progressive distributor; Said progressive distributor residue oil outlet is connected with said lubricant transfer pinion by said pipeline again; Said lubricant transfer pinion is fixed on by the bearing actuation gear, and meshes said bearing actuation gear and said bearing flank engagement with said bearing actuation gear.

Compared with prior art, the utility model is used rational lubrication system to wind-powered electricity generation unit bearing lubrication position different mining, has reached the lubricated accurately effect of low-cost system height.

Description of drawings

Fig. 1 is that the utility model large-scale wind electricity unit bearing centralized lubrication system is formed schematic representation;

Fig. 2 is that the utility model single-line type lubrication system is formed schematic representation;

Fig. 3 is that the laddering lubrication system of the utility model is formed schematic representation.

Description of reference numerals: 1-pitch variable bearings; The 2-bearing of going off course; The 3-main bearing; 11,21,31-bearing race; 12, the 22-bearing flank of tooth; 10-single-line type lubrication system; The laddering lubrication system of 20-; 101-high pressure grease pump; The 102-selector valve; The 103-pipeline; 104-combined type single-line type distributor; 105-terminal pressure switch; 106 mechanical compression tables; 201-high pressure grease pump; The 202-pipeline; The 203-progressive distributor; 204-jam signal prober; The 205-lubricant transfer pinion; 206-bearing actuation gear.

Embodiment

Below in conjunction with accompanying drawing, do more detailed explanation with other technical characteristics and advantage to the utility model is above-mentioned.

As shown in Figure 1; For the utility model large-scale wind electricity unit bearing centralized lubrication system is formed schematic representation; The large-scale wind electricity unit has pitch variable bearings 1, driftage bearing 2 and main bearing 3; Described pitch variable bearings 1, driftage bearing 2 and main bearing 3 all have bearing

race

11,21,31, and described pitch variable bearings 1, driftage bearing 2 all have the bearing flank of

tooth

12,22, wherein; Described bearing

race

11,21, the 31 lubricated single-line type lubrication systems 10 that adopt, the laddering lubrication system 20 of the described bearing flank of

tooth

12,22 lubricated employings.

Because single-line type lubrication system 10 costs are higher, the pipeline internal pressure is low, has avoided grease physical modification under high pressure, and the single line distributivity works alone separately, does not disturb mutually.Large-scale wind electricity

unit bearing race

11,21,31 lubricating points are many, the lubrication management line length, and regular maintenance is inconvenient, adopts single-line type lubrication system 10 can reach lubricated purpose well, reduces the regular maintenance amount.Below the single-line type lubrication system is described in detail.

As shown in Figure 2; Be that the utility model single-line type lubrication system forms schematic representation, single-line type lubrication system 10 comprises: high pressure grease pump 101, selector valve 102, pipeline 103, combined type single-line type distributor 104, terminal pressure switch 105, and mechanical compression table 106.

Described high pressure grease pump 101 is power sources of single-line type lubrication system 10, and described selector valve 102 is installed on the described high pressure grease pump 10, and this selector valve 102 can be the external selector valve.Combined type single-line type distributor 104 is made up of a plurality of single-line type distributors 104; And be fixed on bearing

race

11,21,31 1 sides; Pipeline 103 is together in series high pressure grease pump 101 and combined type single line distributor 104; Combined type single line distributor 104 each oil outlets are connected with each oil outlet of bearing race 11 by pipeline 103 again, form lubrication passages.In the end before a combined type single line distributor 104 terminal pressure switch 105 is housed, reaches mechanical compression table 106, with the terminal pressure of assurance system.

The concrete working procedure of the utility model single-line type lubrication system 10 is following:

High pressure grease pump 101 starts, and system begins to build pressure, and grease will inject each combined type single-line type distributor 104 through pipeline 103, and system pressure reaches preset value; Terminal pressure switch 105 feedback signals, selector valve 102 actions, system decompression; Each combined type single-line type distributor 104 injects lubricating point with grease, and pressure release finishes, and a lubrication interval is accomplished; Periodic duty successively, until lubricated task termination, high pressure grease pump 101 quits work.

High pressure grease pump 101 is realized starting and stopping by blower fan master control control, and the blower fan primary control program is optimized lubrication time, starts high pressure grease pump 101 when bearing needs, and lubrication system is started working, and sets lubricated task termination rear fan master control and stops lubrication system.Lubrication system can reasonably be controlled bearing by designing requirement by the control of blower fan master control system, reaches accurately lubricated purpose.The lubrication system modular design, simple and reliable for structure, selector valve 102 is external, and convenient for maintaining is changed; Terminal pressure switch 105 is independent, can confirm system pressure exactly, avoids that grease viscosity becomes greatly under the low temperature condition, and system builds the terminal lubricating point lack of lubrication that pressure causes inadequately; Whether mechanical compression table 106 maintains easily personnel's visual inspection system in proper working order; How many combined type single-line type distributors 40 can increase and decrease according to lubricating point, and maintain and replace is also simple and convenient.

Laddering lubrication system cost is lower, and line pressure is high, and the fuel-displaced dot sequency of distributor is fuel-displaced, and a lubricating point block system promptly quits work, and needs artificial maintenance.Bearing flank of tooth lubricating point is few, and pipeline is short, adopts laddering lubrication system can satisfy lubricating requirement.Below laddering lubrication system is described in detail.

As shown in Figure 3; Form schematic representation for the laddering lubrication system of the utility model, laddering lubrication system 20 comprises: high pressure grease pump 201, pipeline 202, progressive distributor 203, jam signal prober 204, lubricant transfer pinion 205, the bearing actuation gear 206 and the bearing flank of

tooth

12,22, and said high pressure grease pump 201 is power sources of lubrication system; Progressive distributor 203 is fixed on high pressure grease pump 201 1 sides; Jam signal prober 201 is installed in an outlet of progressive distributor 203, and pipeline 202 couples together high pressure grease pump 201 and progressive distributor 203, and progressive distributor 203 residue oil outlets are connected with lubricant transfer pinion 205 by pipeline 202 again; It is other that lubricant transfer pinion 205 is fixed on bearing actuation gear 206; With 206 engagements of bearing actuation gear, bearing actuation gear 206 and 21 engagements of the bearing flank of tooth, grease is transported on the lubricant transfer pinion 205 through pipeline 202; Along with the engagement rotation spreads upon on the bearing actuation gear 206, finally be applied to and accomplish the lubricated task of the flank of tooth on the bearing flank of tooth 21.If any road binders fat stops up, progressive distributor 203 quits work, and jam signal prober 204 is reported to the police at once, notifies the staff to overhaul.

High pressure grease pump 201 is realized starting and stopping by blower fan master control control, and the blower fan primary control program is optimized lubrication time, starts high pressure grease pump 201 during the bearing flank engagement, and lubrication system is started working, and is lubricated through 205 pairs of bearing flank of tooth of lubricant transfer pinion 12,22.Lubrication system can reasonably be controlled the flank of tooth by designing requirement by the control of blower fan master control system, reaches accurately lubricated purpose.

Compared with prior art, the beneficial effect of the utility model is, uses rational lubrication system to wind-powered electricity generation unit bearing lubrication position different mining, reached the lubricated accurately effect of low-cost system height.

More than explanation is just illustrative as far as the utility model; And nonrestrictive, those of ordinary skills understand, under the situation of spirit that does not break away from following accompanying claims and limited and scope; Can make many modifications; Change, or equivalence, but all will fall in the protection domain of the utility model.

Claims

1. large-scale wind electricity unit bearing centralized lubrication system; It is characterized in that; Pitch variable bearings, driftage bearing all have the bearing race and the bearing flank of tooth; Main bearing has bearing race, the lubricated single-line type lubrication system that adopts of described bearing race, the laddering lubrication system of the lubricated employing of the described bearing flank of tooth.

2. according to the said large-scale wind electricity unit of claim 1 bearing centralized lubrication system; It is characterized in that; Described single-line type lubrication system comprises high pressure grease pump, selector valve, pipeline, combined type single-line type distributor; Described high pressure grease pump is the power source of single-line type lubrication system, and described selector valve is installed on the described high pressure grease pump, and said combined type single-line type distributor is made up of a plurality of single-line type distributors; And be fixed on said bearing race one side; Said pipeline is together in series high pressure grease pump and said a plurality of single line distributor, and said a plurality of each oil outlets of single line distributor are connected with each oil outlet of said bearing race by said pipeline again, forms lubrication passages.

3. according to the said large-scale wind electricity unit of claim 2 bearing centralized lubrication system, it is characterized in that described selector valve is the external selector valve.

4. according to the said large-scale wind electricity unit of claim 2 bearing centralized lubrication system, it is characterized in that also comprise a terminal pressure switch, said terminal pressure switch is installed in before last single line distributor.

5. according to the said large-scale wind electricity unit of claim 2 bearing centralized lubrication system, it is characterized in that also comprise a mechanical compression table, said mechanical compression table is installed in before last single line distributor.

6. according to the said large-scale wind electricity unit of claim 1 bearing centralized lubrication system; It is characterized in that; Described laddering lubrication system comprises: high pressure grease pump, pipeline, progressive distributor, jam signal prober, lubricant transfer pinion, bearing actuation gear, said high pressure grease pump are the power sources of lubrication system, and described progressive distributor is fixed on said high pressure grease pump one side; Said jam signal prober is installed in an outlet of said progressive distributor; Said pipeline couples together said high pressure grease pump and said progressive distributor, and said progressive distributor residue oil outlet is connected with said lubricant transfer pinion by said pipeline again, and said lubricant transfer pinion is fixed on by the bearing actuation gear; And with the engagement of said bearing actuation gear, said bearing actuation gear and said bearing flank engagement.