CN204387302U

CN204387302U - Pressurized machine shaped end seal ring

Info

Publication number: CN204387302U
Application number: CN201520007572.2U
Authority: CN
Inventors: 施永强
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-01-06
Filing date: 2015-01-06
Publication date: 2015-06-10
Anticipated expiration: 2025-01-06

Abstract

The utility model provides a kind of pressurized machine shaped end seal ring, comprise a ring body, ring body has a port, the both sides of port are the first joint and second joint of ring body, improvements are: the fitting surface of the first joint is provided with an arc concave surface, and this arc concave surface extends to inner radial surface from seal ring radially-outer surface; The fitting surface of the second joint is provided with the outer convex surface of an arc matched with the arc concave surface on the first joint.Further, the central angle of the longitudinal section circular arc of the arc concave surface on the first joint is 100 ~ 160 degree.The port of this seal ring is owing to being that the outer convex surface of arc concave surface and arc coordinates formation, and therefore occurred complications largely, bending angle is also quite large, and lubricant oil is not easy the small labyrinth gap leaking through seal ring in the axial direction.Therefore the seal ring axial seal better effects if after improving, solves the problem of pressurized machine leakage of oil.

Description

Pressurized machine shaped end seal ring

Technical field

The utility model relates to engine supercharger art, especially a kind of seal ring for pressurized machine.

Background technique

Automobile booster is applied in motor car engine at present more and more, and pressurized machine can play for petrol engine or diesel engine and improve power and moment of torsion, reduces the beneficial effect of discharge.

Pressurized machine leakage of oil is that pressurized machine lost efficacy modal phenomenon, as depicted in figs. 1 and 2, port is straight mouth to current seal ring structure, and seal ring is placed in bearing support (also referred to as intermediate), for axial seal, be all provided with seal ring in the turbine end of turbosupercharger and pressure side.But the sealing effect of the seal ring of this kind of structure is not best, after using after a while, the axial oil leakage phenomenon of easy generation, if there is leakage of oil (lubricant oil spills) in the turbine end of turbosupercharger (hot junction), then lubricant oil can enter engine exhaust pipe, if leakage of oil occurs the pressure side of turbosupercharger (cold junction), then lubricant oil can enter engine air inlet tube.

Summary of the invention

For the deficiencies in the prior art, the utility model provides a kind of pressurized machine shaped end seal ring, improves the structure of seal ring port, and the axial seal effect of seal ring is strengthened greatly.The technical solution adopted in the utility model is:

A kind of pressurized machine shaped end seal ring, comprise a ring body, ring body has a port, the both sides of port are the first joint and second joint of ring body, and improvements are:

The fitting surface of the first joint is provided with an arc concave surface, and this arc concave surface extends to inner radial surface from seal ring radially-outer surface; The fitting surface of the second joint is provided with the outer convex surface of an arc matched with the arc concave surface on the first joint.

Further, the central angle of the longitudinal section circular arc of the arc concave surface on the first joint is 100 ~ 160 degree.

The utility model has the advantage of: the port of seal ring is owing to being arc concave surface and arc outer convex surface cooperation formation, therefore complications have largely been there are, bending angle is also quite large, and lubricant oil is not easy the small labyrinth gap leaking through seal ring in the axial direction.Therefore the seal ring axial seal better effects if after improving, solves the problem of pressurized machine leakage of oil.

Accompanying drawing explanation

Fig. 1 is existing seal ring plan view.

Fig. 2 is the plan view of Fig. 1.

Fig. 3 is port of the present utility model plan view.

Fig. 4 is plan view of the present utility model.

Embodiment

Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.

Existing seal ring structure as depicted in figs. 1 and 2, comprises a ring body, ring body has a port one, port one is straight mouth, the fitting surface that first joint 2 of port one both sides is relative with the second joint 3, two sides that namely the first joint 2 is relative with the second joint 3, all face directly.Therefore the axial seal effect of seal ring will decline in use for some time.

It is the seal ring of the improvement that the utility model proposes shown in Fig. 3 and Fig. 4.It is the radially-outer surface near seal ring port one shown in Fig. 3.

The main improvement of seal ring is the shape of port.The both sides of port one are the first joint 2 and the second joint 3 of ring body.

The fitting surface of the first joint 2 is provided with an arc concave surface 21, and this arc concave surface 21 extends to inner radial surface from seal ring radially-outer surface; The fitting surface of the second joint 3 is provided with the outer convex surface 31 of an arc matched with the arc concave surface 21 on the first joint.

Preferably, the central angle of the longitudinal section circular arc of the arc concave surface 21 on the first joint 2 is 100 ~ 160 degree.As shown in the angle θ in Fig. 3.

Be assemblied in bearing support by sealing ring, at an axial setting rational seal ring, the port one of seal ring is owing to being that the outer convex surface of arc concave surface and arc coordinates formation, and therefore occurred complications largely, bending angle is also quite large; Coordinate a rational port gap, the gap of port one is controlled in 2 ~ 4 (1 is 0.01mm), lubricant oil produces flow resistance when seal ring port flows, seal ring port can stop the mobility of lubricant oil, till lubricant oil can not flow, lubricant oil in bearing support (also referred to as intermediate) can not be revealed, thus eliminate the problem of booster turbine end, pressure side sealing place leakage of oil.Therefore the seal ring axial seal better effects if after improving.

Claims

1. a pressurized machine shaped end seal ring, comprises a ring body, and ring body has a port (1), and the both sides of port (1) are the first joint (2) and second joint (3) of ring body, it is characterized in that:

The fitting surface of the first joint (2) is provided with an arc concave surface (21), and this arc concave surface (21) extends to inner radial surface from seal ring radially-outer surface; The fitting surface of the second joint (3) is provided with the outer convex surface (31) of an arc matched with the arc concave surface (21) on the first joint.

2. pressurized machine shaped end seal ring as claimed in claim 1, is characterized in that:

The central angle of the longitudinal section circular arc of the arc concave surface (21) on the first joint (2) is 100 ~ 160 degree.