CN208417261U - A kind of water lubrication dislocation thrust bearing - Google Patents

Abstract

The utility model discloses a kind of water lubrication dislocation thrust bearings, are made of male rotor water lubricating thrust bearing and mother rotor water lubricating thrust bearing along rotor axial location dislocation arrangement.Water lubricating thrust bearing is made of dynamicthrust disk and static thrust disk, and the material of one of disk is metal material, and the material of another disk is engineering plastics.The compression process of water lubrication helical-lobe compressor is close to isotherm compression, to keep its single machine pressure at expulsion higher (gauge pressure 1.5MPa), guarantee the durability of water lubricating thrust bearing simultaneously, the utility model arranges male rotor water lubricating thrust bearing and mother rotor water lubricating thrust bearing along rotor axial location dislocation, aforementioned structure can greatly increase the loaded area of engineering plastics thrust disc, to significantly improve the service life of water lubricating thrust bearing.The utility model can significantly improve the service life of water lubrication helical-lobe compressor thrust bearing, while improve the pressure at expulsion of water lubrication helical-lobe compressor.

Description

A kind of water lubrication dislocation thrust bearing

Technical field

The utility model relates to Compressor Technology field, in particular to a kind of water lubrication dislocation thrust bearing.

Background technique

Currently, the single-stage pressure at expulsion of the water-lubricated compressor on domestic and international market is all relatively low, main difficulty among these Point is to require the self-lubricating property of material for sliding bearing and wear-resisting property will be very high under conditions of water makees lubricant, because of water Viscosity it is very low with respect to the viscosity of mineral oil, i.e., at 40 DEG C, the absolute viscosity of water is about the 1/82 of turbine oil.So water exists Water between the sliding bearing loading end of rotation is Newtonian fluid, i.e. its viscosity meets newtonian viscous calculation formula: τ=η du/ dy.Due to the viscosity very little η of water, the size finite value of the velocity gradient du/dy of water film surface, therefore, sliding bearing loading end Between moisture film suffered by Friction Shearing Stress τ very little, moisture film is difficult to be formed.Because of the bearing capacity of lubricating liquid film in sliding bearing It is directly proportional to its viscosity, and square be inversely proportional with thickness of liquid film, therefore, if other conditions are the same, to obtain phase Deng bearing capacity, then the thickness of moisture film is only the 1/8 of oil film thickness.Along with plain bearing bush and axle journal process it is coarse It influences, it is easy to bearing shell and axle journal mixed film friction during the work time occur.Based on previous reasons, water lubrication thrust axis in the market It holds and is made of the disk that disk that a material is metal material and a material are engineering plastics.Wherein.Wherein, material is engineering plastic The disk of material, material itself have certain self-lubrication.Currently, the compression process of water-lubricated compressor is close to isotherm compression, Its single-stage pressure at expulsion is no more than gauge pressure 1.3MPa, so, the suitable low speed of existing water lubriucated bearing passs the water lubrication of pressure at expulsion Compressor uses.

In conclusion the self-lubricating property and wearability of engineering plastics are at restriction water-lubricated compressor in water lubriucated bearing The restraining factors developed to high speed and high pressure at expulsion direction.

Utility model content

The technical issues of the utility model solves is to provide the revolving speed and exhaust pressure that water lubrication helical-lobe compressor can be improved A kind of water lubrication dislocation thrust bearing of power.

The thrust bearing the technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of water lubrication misplaces, packet Compressor body is included, intermeshing male rotor and mother rotor are provided in the compressor body, further includes being mounted on revolution The male rotor water lubricating thrust bearing of sub- side and the mother rotor water lubricating thrust bearing for being mounted on mother rotor side, the revolution Sub- water lubricating thrust bearing includes that the male rotor static thrust disk being mounted on casing and the male rotor being mounted in male rotor are moved and pushed away Power disk, the mother rotor water lubricating thrust bearing include the mother rotor static thrust disk being mounted on casing and are mounted on mother rotor Mother rotor dynamicthrust disk, the male rotor water lubricating thrust bearing and mother rotor water lubricating thrust bearing are along male rotor and female turn The axial position of son, which misplaces, to be arranged.

Further, the mother rotor water lubricating thrust bearing is located at close to the position of compressor body compression chamber.

Further, the male rotor water lubricating thrust bearing is located remotely from the position of compressor body compression chamber, institute State outside or inside that male rotor water lubricating thrust bearing is located at mother rotor water lubricating thrust bearing.

Further, the maximum outside diameter of mother rotor dynamicthrust disk and mother rotor static thrust disk is less than compressor center away from subtracting Go the minimum outer diameter of male rotor dynamicthrust disk Yu male rotor static thrust disk junction.

Further, the male rotor water lubricating thrust bearing and mother rotor water lubricating thrust bearing are along rotor axial position It sets dislocation and is arranged in compressor body low-pressure side.

Further, the male rotor water lubricating thrust bearing and mother rotor water lubricating thrust bearing are along rotor axial position It sets dislocation and is arranged in compressor body high-pressure side.

The beneficial effects of the utility model are: compared with prior art, a kind of water lubrication dislocation described in the utility model Thrust bearing designs the male rotor water lubrication thrust that has been multiplied by cleverly structure using existing water lubricating bearing material The loaded area of bearing and the loaded area of mother rotor water lubricating thrust bearing, while improving water lubricating thrust bearing outer rim Linear velocity is to be more easier to be formed complete Water film lubricating.Water lubrication can be improved in the utility model water lubrication dislocation thrust bearing The revolving speed and pressure at expulsion of helical-lobe compressor, and the service life of screw rod mechanism greatly improved, reduce equipment investment at This, has market value very much.

Detailed description of the invention

Fig. 1 is the compressor low-pressure side design dislocation Designing Thrust Bearing structure chart using the utility model；

Fig. 2 is to stretch out axis side view using the compressor low-pressure side design dislocation thrust bearing host of the utility model；

Fig. 3 is the compressor low-pressure side design dislocation thrust bearing host thrust bearing water supply side view using the utility model Figure；

Fig. 4 is the compressor high-pressure side design dislocation Designing Thrust Bearing structure chart using the utility model；

In the figure, it is marked as 1-male rotor thrust bearing water supplying pipe；2-male rotor thrust disc glands；3-screws；4-is public Rotor static thrust disk；5-male rotor dynamicthrust disks；6-male rotor dynamicthrust disk lock screws；7-mother rotor thrust disc glands； 8-male rotor low-pressure side bearing holder (housing, cover)s；9-casings；10-male rotors；11-exhaust bearing blocks；12-male rotor high pressure side bearings Set；13-male rotor high pressure side bearings；14-locking axle sleeves；15-end caps；16-axle envelopes；17-glands；18-screws；19— End cap lock-screw 20-mother rotor high pressure side bearing；21-mother rotor high-pressure side bearing holder (housing, cover)s；22-mother rotor axle envelopes；23-machines Shell lock-screw；24-mother rotors；25-mother rotor bearing holder (housing, cover)s；26-mother rotor dynamicthrust disks；27-mother rotor static thrust disks； 28-mother rotor static thrust disk lock screws；29-mother rotor dynamicthrust disk lock screws；30-mother rotor thrust bearings supply water Pipe, 31-male rotor dynamicthrust disk stainless steel brackets；32-mother rotor static thrust disk stainless steel brackets.

Specific embodiment

The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

Being as shown in Figure 1 to Figure 2 is to design dislocation Designing Thrust Bearing in compressor low-pressure side using the utility model Structure chart belongs to the first embodiment of the utility model, as shown, the compressor body includes that male rotor thrust bearing supplies Water pipe 1, male rotor thrust disc gland 2, screw 3, male rotor static thrust disk 4, male rotor dynamicthrust disk 5, male rotor dynamicthrust disk Lock screw 6, mother rotor thrust disc gland 7, male rotor low-pressure side bearing holder (housing, cover) 8, casing 9, male rotor 10, exhaust bearing block 11, Male rotor high-pressure side bearing holder (housing, cover) 12, male rotor high pressure side bearing 13, locking axle sleeve 14, end cap 15, axle envelope 16, gland 17, screw 18, end cap lock-screw 19, mother rotor high pressure side bearing 20, mother rotor high-pressure side bearing holder (housing, cover) 21, mother rotor axle envelope 22, casing lock Tight screw 23, mother rotor 24, mother rotor bearing holder (housing, cover) 25, mother rotor dynamicthrust disk 26, mother rotor static thrust disk 27, mother rotor static push Power disk lock screw 28, mother rotor dynamicthrust disk lock screw 29 and mother rotor thrust bearing water supplying pipe 30, the male rotor is quiet Thrust disc 4 and male rotor dynamicthrust disk 5 are mounted on male rotor one end, the mother rotor static thrust disk 27 and mother rotor dynamicthrust disk 26 are mounted on 24 one end of mother rotor, and rotor dynamicthrust disk 26 and mother rotor static thrust disk 27 are located at close to the position of compression chamber；Together When, the male rotor static thrust disk 4 and male rotor dynamicthrust disk 5 are located remotely from the position of compression chamber, and at the same time being located at this The outside of mother rotor dynamicthrust disk 26 and mother rotor static thrust disk 27 described in utility model, so that aforementioned this male rotor static push The position of power disk 4 and male rotor dynamicthrust disk 5 and mother rotor dynamicthrust disk 26 and mother rotor static thrust disk 27 is just along armature spindle To position be rendered as misaligned state due in helical-lobe compressor male rotor axial gas forces much larger than mother rotor axial gas forces Characteristic, therefore, the thrust bearing loading end for bearing male rotor axial gas forces should be greater than bearing pushing away for mother rotor axial gas forces Power loading ability of bearing face is designed based on dislocation above-mentioned, so that the loading end of male rotor static thrust disk 4 and male rotor dynamicthrust disk 5 Product can facilitate according to Compressor Discharge Pressure height adjusts its designed size, and outer diameter size is unrestricted.Aforementioned mother The maximum outside diameter of rotor dynamicthrust disk 26 and mother rotor static thrust disk 27 is less than compressor center away from subtracting male rotor dynamicthrust disk 5 With the minimum outer diameter of 4 junction of male rotor static thrust disk, male rotor static thrust disk 4 withstands the axial gas forces of male rotor 10, female Rotor static thrust disk 27 withstands the axial gas forces of mother rotor 24, this compressor designs the public affairs that have been multiplied by cleverly structure The loaded area of rotor water lubricating thrust bearing and the loaded area of mother rotor water lubricating thrust bearing, while improving water lubrication The linear velocity of thrust bearing outer rim improves water lubrication helical-lobe compressor to be more easier to be formed complete Water film lubricating Revolving speed and pressure at expulsion, and the service life of screw rod mechanism greatly improved, reduce equipment investment cost.

As shown in Fig. 4 dislocation Designing Thrust Bearing structure is designed in compressor high-pressure side using the utility model Figure, belongs to the second embodiment of the utility model, and the disk of male rotor static thrust described in the utility model 4 and exhaust bearing block 11 are used Screw locking.Male rotor dynamicthrust disk 5 and male rotor dynamicthrust disk stainless steel brackets 31 pass through male rotor dynamicthrust disk locking screw Silk 6 locks male rotor 10 on exhaust end axis.Mother rotor dynamicthrust disk 26 and mother rotor 24 are locked by mother rotor dynamicthrust disk Screw 29 is locked at mother rotor 24 on exhaust end axis.Mother rotor static thrust disk 27 and mother rotor static thrust disk stainless steel brackets 32 It is locked on exhaust bearing block 11 by screw.Also, male rotor static thrust disk 4 and male rotor dynamicthrust disk 5 and mother rotor are dynamic Thrust disc 26 is axially disposed in compressor high-pressure side with mother rotor static thrust disk 27；Moreover, male rotor static thrust disk 4 and revolution There are two types of design schemes for the position of the opposite mother rotor dynamicthrust disk 26 of sub- dynamicthrust disk 5 and mother rotor static thrust disk 27: one is Male rotor static thrust disk 4 and male rotor dynamicthrust disk 5 can be designed in opposite mother rotor dynamicthrust disk 26 and mother rotor static thrust The position of the close compression chamber of disk 27, i.e. mother rotor dynamicthrust disk 26 are with mother rotor static thrust disk 27 along the left side in direction shown in Fig. 4 Side；Turn in opposite mother rotor dynamicthrust disk 26 with female the second is male rotor static thrust disk 4 and male rotor dynamicthrust disk 5 can be designed The position of the separate compression chamber of sub- static thrust disk 27, i.e. mother rotor dynamicthrust disk 26 and mother rotor static thrust disk are along side shown in Fig. 4 To 27 right side.Can be equally multiplied by way of this dislocation arrangement the loading end of male rotor water lubricating thrust bearing Long-pending and mother rotor water lubricating thrust bearing loaded area, while the linear velocity of water lubricating thrust bearing outer rim is improved with more Complete Water film lubricating easy to form, while the revolving speed and pressure at expulsion of water lubrication helical-lobe compressor are improved, and substantially mention The high service life of screw rod mechanism, reduces equipment investment cost.

Particular embodiments described above has carried out into one the purpose of this utility model, technical scheme and beneficial effects Step is described in detail, it should be understood that being not limited to this foregoing is merely specific embodiment of the utility model Utility model, within the spirit and principle of the utility model, any modification, equivalent substitution, improvement and etc. done should all wrap Containing being within the protection scope of the utility model.

Claims (6)

1. The thrust bearing 1. a kind of water lubrication misplaces, including compressor body are provided in the compressor body intermeshing Male rotor (10) and mother rotor (24) further include male rotor water lubricating thrust bearing and the installation for being mounted on male rotor (10) side Mother rotor water lubricating thrust bearing in mother rotor (24) side, the male rotor water lubricating thrust bearing include being mounted on casing On male rotor static thrust disk (4) and the male rotor dynamicthrust disk (5) that is mounted in male rotor, the mother rotor water lubrication thrust Bearing includes the mother rotor static thrust disk (27) being mounted on casing and the mother rotor dynamicthrust disk (26) being mounted on mother rotor, It is characterized by: the axis of the male rotor water lubricating thrust bearing and mother rotor water lubricating thrust bearing along male rotor and mother rotor It is arranged to location dislocation.
2. The thrust bearing 2. a kind of water lubrication as described in claim 1 misplaces, it is characterised in that: the mother rotor water lubrication thrust Bearing is located at close to the position of compressor body compression chamber.
3. The thrust bearing 3. a kind of water lubrication as described in claim 1 misplaces, it is characterised in that: the male rotor water lubrication thrust Bearing is located remotely from the position of compressor body compression chamber, and the male rotor water lubricating thrust bearing, which is located at mother rotor water lubrication, to be pushed away The outside or inside of power bearing.
4. The thrust bearing 4. a kind of water lubrication as claimed in claim 1,2 or 3 misplaces, it is characterised in that: mother rotor dynamicthrust disk (26) with the maximum outside diameter of mother rotor static thrust disk (27) be less than compressor center away from subtract male rotor dynamicthrust disk (5) and revolution The minimum outer diameter of sub- static thrust disk (4) junction.
5. The thrust bearing 5. a kind of water lubrication as claimed in claim 1,2 or 3 misplaces, it is characterised in that: the male rotor water profit It slides thrust bearing and mother rotor water lubricating thrust bearing and is arranged in compressor body low-pressure side along rotor axial location dislocation.
6. The thrust bearing 6. a kind of water lubrication as claimed in claim 1,2 or 3 misplaces, it is characterised in that: the male rotor water profit It slides thrust bearing and mother rotor water lubricating thrust bearing and is arranged in compressor body high-pressure side along rotor axial location dislocation.