CN208718732U

CN208718732U - A kind of bearing box of steam turbine sealed oil catch

Info

Publication number: CN208718732U
Application number: CN201821355241.8U
Authority: CN
Inventors: 程康; 杨海龙; 杨鹏程
Original assignee: Guodian Jingyuan Power Generation Co Ltd
Current assignee: Guodian Jingyuan Power Generation Co Ltd
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2019-04-09
Anticipated expiration: 2028-08-22

Abstract

The utility model provides a kind of bearing box of steam turbine sealed oil catch, oil catch body and drum including annular, the shaft cooperated with oil catch body space is equipped in the oil catch body, the oil catch body and shaft contacts position are equipped with annular air slot and oil catch tooth, and the outside of oil catch body is equipped with multiple blowholes；The drum is socketed in shaft and drum is located at the outside of oil catch body, the bottom surface of the drum is equipped with multiple ventholes, the venthole is connected with blowhole by appendix, and the annulus that can be rotated with shaft is fixed in the shaft, and annulus is equipped with multiple blades arranged in a ring.The wind-force that the utility model is generated by shaft rotation is to injection air inside oil catch body and forms annular high voltage air zone, effectively prevents the oil leakage in bearing housing, and sealing effect is good, and air pump is arranged without additional；Air washes away so that being not likely to produce greasy dirt bite inside oil catch tooth socket, and reduction staff overhauls cleaning frequency, greatly saves people's power.

Description

A kind of bearing box of steam turbine sealed oil catch

Technical field

The utility model belongs to Seal in Bearing Box technical field, is related to a kind of bearing box of steam turbine sealed oil catch.

Background technique

Steam turbine bearing oil seal is chronically at hot environment, and oily shelves greasy dirt is burned obstruction oil return opening, caused in copper tooth socket Greasy dirt bite is generated, the reduction of oil catch sealing effect is caused, leads to the problem of oil leak, the meeting when lubricating oil leaks near steam turbine Because of the security risks such as smolder or catch fire caused by high temperature.

Utility model content

The purpose of this utility model is that in view of the problems of the existing technology, providing a kind of bearing box of steam turbine Seal Oil Gear.

For this purpose, the utility model adopts the following technical scheme:

A kind of bearing box of steam turbine sealed oil catch, oil catch body and drum including annular are equipped in the oil catch body and oil The shaft of block body clearance fit, the oil catch body and shaft contacts position are equipped with annular air slot and oil catch tooth, oil catch body it is outer Side is equipped with multiple blowholes, and the blowhole is through in air groove；The bottom of the drum is equipped with through-hole, and drum, which is socketed on, to be turned On axis and drum is located at the outside of oil catch body, and drum is mutually fixed by connecting rod with oil catch body, and the bottom surface of the drum is equipped with multiple Venthole, the venthole are connected with blowhole by appendix, and the annulus that can be rotated with shaft is fixed in the shaft, The annulus is located at the inside of cylinder, and annulus is equipped with multiple blades arranged in a ring.

Further, the inside of the oil catch body is equipped with magnet.

Further, the oil catch tooth is brass material.

Further, filter layer is equipped at the port of the drum.

The utility model has the beneficial effects that: the wind-force generated by shaft rotation to injection air inside oil catch body simultaneously Annular high voltage air zone is formed, the oil leakage in bearing housing is effectively prevented, sealing effect is good, without additional setting air Pump, manufacturing cost are low；Air washes away so that being not likely to produce greasy dirt bite inside oil catch tooth socket, and reduction staff overhauls cleaning frequency Rate greatly saves people's power.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the partial enlarged view at the position the utility model A；

In figure, 1- oil catch body, 2- air groove, 3- oil catch tooth, 4- blowhole, 5- drum, 501- through-hole, 6- connecting rod, 7- goes out Stomata, 8- appendix, 9- annulus, 10- blade, 11- filter layer, 12- magnet, 13- shaft, 14- bearing housing.

Specific embodiment

As illustrated in fig. 1 and 2, a kind of bearing box of steam turbine sealed oil catch, oil catch body 1 and drum 5 including annular, oil catch body 1, which can be used stainless steel, is made, and the shaft 13 cooperated with oil catch body space, oil catch body 1 and 13 contact portion of shaft are equipped in oil catch body 1 Position is equipped with annular air slot 2 and oil catch tooth 3, and oil catch tooth 3 can be used brass and be made, because brass has the characteristics that self-lubricating, wear-resisting, And the surface of shaft 13 will not be caused to wear, positive pressure air can be formed in air groove 2, in the shaft of oil catch body 1 and steam turbine Annular high voltage air zone is formed between 13, annular high voltage air zone makes to form air between oil catch body 1 and the shaft 13 of steam turbine Sealing ring can prevent the lubricating oil in bearing housing from leaking outside, and the outside of oil catch body 1 is set there are two blowhole 4, and when production can be in oil catch Drill straight diameter is that the hole of 7-9mm can form blowhole 4 on body 1, and blowhole 4 is through in air groove 2；The bottom of drum 5 is equipped with Through-hole 501, drum 5 are socketed in shaft 13, and drum 5 is located at the outside of oil catch body 1, and drum 5 can be by connecting rod 6 and using welding Mode fixed with 1 phase of oil catch body, the bottom surface of drum 5 is set there are two venthole 7, and venthole 7 and blowhole 4 pass through appendix 8 It is connected, the annulus 9 that can be rotated with shaft 13 is fixed in shaft 13, annulus 9 is located at the inside of drum 5, and annulus 9 is equipped with more Gas can be blowed to the venthole of drum 5 by a blade 10 arranged in a ring, the wind-force that blade 10 is generated when rotating with garden ring 9 7, filter layer 11 is equipped at the port of drum 5, filter layer 11 can be used air filtration cotton and be made, and for filtering air, prevent sky Air groove in gas inside the more pollution oil catch of impurity；The inside of oil catch body 1 be equipped with magnet 12, for adsorb iron-containing impurity with Convenient for cleaning.

When the utility model is used, oil catch body 1 is mounted in the shaft 13 of steam turbine, and passes through screw for oil catch body 1 It is fixed with bearing box of steam turbine 14, while annulus 9 being fixed in shaft 13 to and being located at the inside of drum 5, pass through gas transmission Venthole 7 is connect by pipe 8 with blowhole 4, and when steam turbine work, the rotation of shaft 13 with movable vane piece 10 and at the same time rotate, leaf The wind-force that piece 10 generates when rotating, wind-force blow out air from venthole 7, and pass through appendix 8 from 7 input air slot of blowhole 2 inside forms positive pressure inside air groove 2, and between oil catch body 1 and rotating shaft of steam turbine 13 after air is full of air groove 2 Annular high voltage air zone is formed, annular high voltage air zone makes to form air seal ring between oil catch body 1 and rotating shaft of steam turbine 13, prevents Only lubricating oil leaks, and plays preferable sealing function, while constantly injection air, air from oil catch tooth 3 and shaft 13 it Between gap at squeeze out, greasy dirt can not be accumulated near oil catch tooth 3 under the washing away of air, keep oil catch tooth 3 cleaning；Magnet The ferrous contaminants generated inside bearing housing can be adsorbed the cleaning kept inside bearing housing 14 in 13 operational process of shaft by 12, together When be also convenient for clearing up.

Claims

1. a kind of bearing box of steam turbine sealed oil catch, which is characterized in that oil catch body and drum including annular, in the oil catch body Equipped with the shaft cooperated with oil catch body space, the oil catch body and shaft contacts position are equipped with annular air slot and oil catch tooth, oil The outside of block body is equipped with multiple blowholes, and the blowhole is through in air groove；The bottom of the drum is equipped with through-hole, drum It is socketed in shaft and drum is located at the outside of oil catch body, drum is mutually fixed by connecting rod with oil catch body, the bottom surface of the drum Equipped with multiple ventholes, the venthole is connected with blowhole by appendix, and being fixed in the shaft can turn with shaft Dynamic annulus, the annulus are located at the inside of cylinder, and annulus is equipped with multiple blades arranged in a ring.

2. a kind of bearing box of steam turbine sealed oil catch according to claim 1, which is characterized in that the inside of the oil catch body Equipped with magnet.

3. a kind of bearing box of steam turbine sealed oil catch according to claim 1, which is characterized in that the oil catch tooth is brass Material.

4. a kind of bearing box of steam turbine sealed oil catch according to claim 1, which is characterized in that at the port of the drum Equipped with filter layer.