CN206478116U

CN206478116U - A kind of sliding bearing sealing structure

Info

Publication number: CN206478116U
Application number: CN201720175562.9U
Authority: CN
Inventors: 邓浩; 郭擎; 唐密; 李鹏春
Original assignee: Chongqing Jiangjin Shipbuilding Industry Co Ltd
Current assignee: Chongqing Jiangjin Shipbuilding Industry Co Ltd
Priority date: 2017-02-27
Filing date: 2017-02-27
Publication date: 2017-09-08
Anticipated expiration: 2027-02-27

Abstract

The utility model discloses a kind of small sliding bearing sealing structure of span, there is the rotating machinery of seal request in the expanding machine technical field or other field that belong to ORC (organic Rankine bottoming cycle) power field to working medium.The utility model includes sliding bearing, the mechanical seal being arranged on main shaft, an axle sleeve is fixed in the end of the main shaft, the axle sleeve extends axially inwardly along main shaft and passes through sliding bearing, the axle sleeve is fixed through the rotating ring of one end of sliding bearing and mechanical seal, mechanical seal is axially positioned, the other end of the axle sleeve radially convexes to form thrust disc and coordinated with the sliding bearing, to sliding bearing axially position.The utility model eliminates the axial direction positioning device such as retaining ring for needing when mechanical seal is installed, and then reduces the span of bearing, and the structure is also provided with the effect of axle sleeve and thrust disc, and practicality is stronger.

Description

A kind of sliding bearing sealing structure

Technical field

The utility model belongs to right in the expanding machine technical field or other field of ORC (organic Rankine bottoming cycle) power field Working medium has the rotating machinery of seal request, is related to a kind of sliding bearing sealing structure.

Background technology

In ORC (organic Rankine bottoming cycle) system, working medium need to ensure that it can not be leaked when expanding machine does work.Working medium is swollen Done work in swollen machine, by the outside power output of main shaft, due to turn it is quiet between certainly exist gap, it is necessary to sealed.In big work( In rate expanding machine, usually using sliding bearing to ensure the reliability of unit, because sliding bearing is larger with oil mass, if lubricating oil Directly contacted with working medium, it will pollution working medium, therefore need to be sealed between working medium and sliding bearing.In order to ensure that working medium is not outside Boundary is revealed, while lubricating oil does not enter working medium, is sealed generally between working medium and sliding bearing using mechanical seal, but machine Tool, which is sealedly installed, needs axial direction positioning device, such as retaining ring etc., so results in bearing span increase, rotor-support-foundation system is set Meter difficulty also accordingly increases, meanwhile, the requirement after increase equipment to installation accuracy is also correspondingly improved.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art to seal knot there is provided a kind of small sliding bearing of span Structure.

What the purpose of this utility model was realized in：A kind of sliding bearing sealing structure, including on main shaft An axle sleeve is fixed in sliding bearing, mechanical seal, the end of the main shaft, and the axle sleeve extends axially inwardly along main shaft and passes through cunning Dynamic bearing, the axle sleeve is fixed through the rotating ring of one end of sliding bearing and mechanical seal, and mechanical seal is axially positioned, described The other end of axle sleeve radially convexes to form thrust disc and coordinated with the sliding bearing, to sliding bearing axially position.

Preferably, the sliding bearing includes bearing body, radial direction segmental bearing is provided with the bearing body, positioned at radially Axial thrust bearing a on the outside of segmental bearing, tile fragment one end of the radial direction segmental bearing is fixed on bearing body, and the other end is solid It is scheduled on axial thrust bearing a, the axial thrust bearing a is fixed on bearing body.

Preferably, in addition to end cap, the axial thrust bearing b with the thrust disc cooperation of axle sleeve is fixed with the end cap, Axial thrust bearing b is opposite with axial thrust bearing a thrust face.

Preferably, the sliding bearing is integrated in one with mechanical seal.

Preferably, the axle sleeve and the rotating ring of mechanical seal are integrated in one.

By adopting the above-described technical solution, the utility model has the advantages that：The utility model sliding bearing Sealing structure fixes an axle sleeve in the end of main shaft, and the axle sleeve extends axially inwardly along main shaft and passes through sliding bearing, described Axle sleeve is fixed through one end of sliding bearing and the rotating ring of mechanical seal, and mechanical seal is axially positioned, the axle sleeve it is another End radially convexes to form thrust disc and coordinated with the sliding bearing, and to sliding bearing axially position, the structure passes through in main shaft On fix an axle sleeve and just complete axially position to mechanical seal and sliding bearing, eliminating when mechanical seal is installed needs The axial direction positioning device such as retaining ring, and then reduce the span of bearing, and the structure is also provided with the work of axle sleeve and thrust disc With practicality is stronger.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Reference

In accompanying drawing, 1 is main shaft, and 2 be sliding bearing, and 3 be mechanical seal, and 4 be axle sleeve, and 5 be end cap, and 6 be axial thrust axle B is held, 21 be bearing body, and 22 be the tile fragment of radial direction segmental bearing, and 23 be axial thrust bearing a, and 31 be rotating ring, and 41 be thrust disc, 61 be axial thrust bearing b thrust face, and 231 be axial thrust bearing a thrust face.

Embodiment

Embodiment of the present utility model is described in further detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, a kind of embodiment of sliding bearing sealing structure, including sliding bearing 2, machine on main shaft 1 An axle sleeve 4 is fixed in tool sealing 3, the end of main shaft 1, and axle sleeve 4 extends axially inwardly along main shaft 1 and passes through sliding bearing 2, axle sleeve 4 Fixed through one end of sliding bearing 2 and the rotating ring 31 of mechanical seal 3, to the axially position of mechanical seal 3, the other end of axle sleeve 4 Radially convex to form thrust disc 41 with sliding bearing 2 to coordinate, to the axially position of sliding bearing 2.During work, main shaft 1 is with moving axis Set 4 is rotated, and the rotating ring 31 of the driving mechanical of axle sleeve 4 sealing 3 rotates, and when main shaft 1 produces axial force, the thrust disc 41 of axle sleeve 4 is held By thrust.

Sliding bearing 2 includes bearing body 21, is provided with radial direction segmental bearing on bearing body 21, outside radial direction segmental bearing The axial thrust bearing a23 of side, one end of tile fragment 22 of radial direction segmental bearing is fixed on bearing body 21, and the other end is fixed on axial direction On thrust bearing a23, axial thrust bearing a23 is fixed on bearing body 21.Can not only radial load be born but also can bear axle by constituting To the bearing body 21 of power, and the tile fragment end cap needed for plain bearing is eliminated, make the structure of bearing body 21 more compact.

Also include being fixed with the axial thrust bearing b6 with the cooperation of thrust disc 41 of axle sleeve 4 on end cap 5, end cap 5, axially stop Thrust bearing b thrust face 61 is opposite with axial thrust bearing a thrust face 231.Allow thrust disc 41 bear axle inwardly and Axle it is outside thrust.

Sliding bearing 2 is integrated in one with mechanical seal 3.Axle sleeve 4 and the rotating ring 31 of mechanical seal 3 are integrated in one.In assembling When can once mounting, reduce alignment error and assembly space, improve installation accuracy.

Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent The utility model is described in detail by above preferred embodiment for pipe, but those skilled in the art should manage Solution, can make various changes, without departing from the utility model claims institute to it in the form and details The scope of restriction.

Claims

1. a kind of sliding bearing sealing structure, including sliding bearing on main shaft, mechanical seal, it is characterised in that：Institute An axle sleeve is fixed in the end for stating main shaft, and the axle sleeve is extended axially inwardly along main shaft and passes through sliding bearing, and the axle sleeve is passed through One end of sliding bearing and the rotating ring of mechanical seal are fixed, and mechanical seal are axially positioned, the other end of the axle sleeve is radially Convex to form thrust disc with the sliding bearing to coordinate, to sliding bearing axially position.

2. sliding bearing sealing structure according to claim 1, it is characterised in that：The sliding bearing includes bearing body, Radial direction segmental bearing, the axial thrust bearing a on the outside of radial direction segmental bearing, the radial direction watt are installed on the bearing body Tile fragment one end of block bearing is fixed on bearing body, and the other end is fixed on axial thrust bearing a, the axial thrust bearing a It is fixed on bearing body.

3. sliding bearing sealing structure according to claim 2, it is characterised in that：Also include solid on end cap, the end cap Surely there is the thrust face phase with the axial thrust bearing b, axial thrust bearing b and axial thrust bearing a of the thrust disc cooperation of axle sleeve Instead.

4. sliding bearing sealing structure according to claim 1, it is characterised in that：The sliding bearing and mechanical seal collection In one.

5. sliding bearing sealing structure according to claim 1, it is characterised in that：The axle sleeve and the rotating ring of mechanical seal It is integrated in one.