CN2177096Y

CN2177096Y - Floating oil scraper ring for steam turbine

Info

Publication number: CN2177096Y
Application number: CN 93229246
Authority: CN
Inventors: 周少刚
Original assignee: HARBIN ELECTRIC POWER STATION RENOVATION AND HIGH-TECH APPLICATION Co
Current assignee: HARBIN ELECTRIC POWER STATION RENOVATION AND HIGH-TECH APPLICATION Co
Priority date: 1993-09-16
Filing date: 1993-09-16
Publication date: 1994-09-14
Anticipated expiration: 2003-09-16

Abstract

The utility model relates to a floating type oil retainer ring for steam turbines, belonging to a sealing device. At present, oil retainer rings for bearing boxes are all in a copper gear structure, which always causes gear grinding phenomenon because of eccentricity generated during the operational process of a rotor. Therefore, the abrasion of a shaft journal is caused, which causes oil leakage and steam leakage and sometimes probably cause the fire accident of machine units. The utility model adopts a floating type oil retainer ring composed of a ring body, an external floating ring and an internal floating ring. The oil retainer ring floating with a rotor can keep the internal diameter of the floating ring and the shaft journal of the rotor form a tiny oil interval, which can not only prevent oil smoke in the box from leaking, but also can avoid the rotor from scratching. The oil retainer ring can be used for sealing oil for various rotors with large diameters.

Description

Floating oil scraper ring for steam turbine

The utility model belongs to a kind of seal arrangement.

Steam turbine set bearing leakage of oil, the leakage cigarette phenomenon of existing in service promptly wasted turbine oil befouling environment again, can cause also that sometimes unit is on fire, and one of reason that produces this phenomenon is exactly that present unit bearing housing flinger ring is copper gear piece structure.Flinger ring just has good sealing effect with the concentric gap that keeps minimum of moving of rotor, in fact flinger ring and rotor just have certain nonconcentricity in processing with in installing, the roll flute phenomenon often takes place in unit operation, cause journal wear, the flinger ring internal diameter size is strengthened, cause that oil is excessive to go out phenomenon.

The purpose of this utility model is to develop a kind of floating type flinger ring of good airproof performance.

Technical measures of the present utility model are as follows:

The floating type flinger ring of steam turbine is made up of ring body (1) and floating ring, the outer shroud (2) that it is characterized in that floating is fixedly mounted on the ring body (1), ring (3) is contained in unsteady outer shroud (2) inboard in floating, between the inner and outer rings of floating radial clearance is arranged, there is integral metal ring (3) inboard or uses filler in floating.For the floating type flinger ring of steam turbine be used on the large-diameter rotor easy for installation, can with ring body (1), float outer shroud (2) and float in encircle (3) and make semi-ring, be assembled into annulus.

Description of drawings:

Fig. 1 is the floating type flinger ring structural representation of steam turbine;

Wherein: 1 is that ring body 2 is the outer shroud that floats

3 are ring in floating.

The utility model has the advantages that: substitute former gear piece formula structure with floating ring, install and look for middle convenience, it can float with rotor, and ring and rotor journal form minimum oil clearance in keeping floating, and good sealing is arranged; Ring inboard be bearing metal in floating, and on-streamly plays the bearing seal effect, can prevent from the case that oil smoke leaks can prevent again that sealing gland from leaking gas and enter in the case, also can avoid the rotor scuffing. Adopt floating oil scraper ring or else with worrying to cause fire incident, the safe operation of favourable unit because copper gear piece and rotor rub.

Introduce an embodiment of the present utility model:

Be used for the floating type flinger ring on the homemade Turbo-generator Set, ring body (1) and unsteady outer shroud (2) are done with the A3F steel, ring (3) is done with the 20# steel in floating, there is integral metal ring (3) inboard in floating, ring (3) internal diameter is φ 410mm in floating, outer shroud (2) external diameter that floats is φ 650mm, the long mutually 30mm of inside and outside annulate shaft that floats, ring body (1) and the axial long 60mm that is of floating ring assembling.

Claims

1, the floating type flinger ring of steam turbine belongs to a kind of seal arrangement, it is made up of ring body (1) and floating ring, it is characterized in that: the outer shroud (2) that floats is fixedly mounted on the ring body (1), ring (3) is contained in unsteady outer shroud (2) inboard in floating, between the inner and outer rings of floating radial clearance is arranged, there is integral metal ring (3) inboard or uses filler in floating.

2, the floating type flinger ring of steam turbine according to claim 1 is characterized in that: ring body (1), unsteady outer shroud (2) and the interior ring (3) that floats all can be made into semi-ring, are assembled into annulus.