CN213271017U - Circulating water turbine adopting magnetic fluid sealing structure - Google Patents

Circulating water turbine adopting magnetic fluid sealing structure Download PDF

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Publication number
CN213271017U
CN213271017U CN202022092259.7U CN202022092259U CN213271017U CN 213271017 U CN213271017 U CN 213271017U CN 202022092259 U CN202022092259 U CN 202022092259U CN 213271017 U CN213271017 U CN 213271017U
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CN
China
Prior art keywords
end cover
magnetic
main shaft
circulating water
water turbine
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Active
Application number
CN202022092259.7U
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Chinese (zh)
Inventor
卓春友
林咸宗
卢林卫
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Huajun Equipment Co ltd
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Huajun Equipment Co ltd
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Priority to CN202022092259.7U priority Critical patent/CN213271017U/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/20Hydro energy

Abstract

The utility model discloses an adopt magnetic current body seal structure's circulating water turbine, including internal seal device, this internal seal device includes the main shaft, cup joint and set up the epaxial bearing of cover, a housing, the end cover, the magnet support, all through bolt fixed connection between end cover and the casing and between magnet support and the end cover, the inside fixed mounting magnetic pole of magnet support and the magnet of setting between the magnetic pole, seal through O type rubber circle between magnetic pole and the magnet support, leave the clearance in the middle of magnetic pole and the main shaft, magnet, magnetic pole and main shaft form the magnetic circuit, the clearance seals through the magnetic current body. The utility model has the advantages of reasonable design, compare with traditional roller bearing, slide bearing and oil film bearing, this magnetic fluid seal structure's circulating water turbine has that mechanical wear is little, the energy consumption is low, small in noise, longe-lived advantage.

Description

Circulating water turbine adopting magnetic fluid sealing structure
Technical Field
The utility model belongs to the technical field of the magnetic seal, concretely relates to adopt magnetic current body seal structure's circulating water turbine.
Background
The main shaft seal of the water turbine is one of the key components of the unit, bears the pressure water sealing function between the rotating component and the fixed component, has good and bad performance, and directly influences the operation safety and the maintenance period of the unit, thereby relating to the economic benefit of a power station and the water squeezing level and quality of a manufacturing plant.
Compared with the traditional mechanical seal or packing seal, the magnetic fluid seal has the unique advantages of no leakage, low abrasion and the like, but the pressure resistance of the magnetic fluid seal is not high, so that how to reasonably design the structure of the magnetic fluid seal, optimize a magnetic circuit, improve the utilization efficiency of a permanent magnet and enhance the sealing performance is necessary.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model aims to provide an adopt magnetic current body seal structure's circulating water turbine.
The utility model discloses a following technical scheme realizes:
the circulating water turbine adopting the magnetic fluid sealing structure comprises an internal sealing device and is characterized in that the internal sealing device comprises a main shaft, a bearing, a shell, a bearing end cover and a magnet support, wherein the bearing, the shell, the bearing end cover and the magnet support are sleeved on the main shaft, the bearing end cover and the shell and the magnet support and the bearing end cover are fixedly connected through bolts, magnetic poles and magnets arranged between the magnetic poles are fixedly arranged in the magnet support, the magnetic poles and the magnet support are sealed through O-shaped rubber rings, a gap is reserved between the magnetic poles and the main shaft, the magnets, the magnetic poles and the main shaft form a magnetic circuit, and the gap is sealed through magnetic fluid.
The circulating water turbine adopting the magnetic fluid sealing structure is characterized in that an annular groove is formed in the bearing end cover, a first water retaining ring is arranged between the bearing end cover and the main shaft, and one end of the first water retaining ring extends into the annular groove.
The circulating water turbine adopting the magnetic fluid sealing structure is characterized in that a framework type rubber seal is arranged between the bearing end cover and the main shaft.
The circulating water turbine adopting the magnetic fluid sealing structure is characterized in that a second water retaining ring is sleeved on the main shaft.
The circulating water turbine adopting the magnetic fluid sealing structure is characterized in that a screw hole communicated with the annular groove is formed in the position, corresponding to the annular groove, of the bearing end cover.
The utility model has the advantages of reasonable design, compare with traditional roller bearing, slide bearing and oil film bearing, this magnetic fluid seal structure's circulating water turbine has that mechanical wear is little, the energy consumption is low, small in noise, longe-lived advantage.
Drawings
FIG. 1 is a schematic structural view of the present invention;
in the figure, 1-a main shaft, 2-a bearing, 3-a shell, 4-a bearing end cover, 5-a magnet bracket, 6-a bolt, 7-a magnetic pole, 8-a magnet, 9-an O-shaped rubber ring, 10-a gap, 11-an annular groove, 12-a first water retaining ring, 13-a skeleton-type rubber seal, 14-a second water retaining ring and 15-a screw hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, and specific embodiments will be given.
As shown in fig. 1, the utility model relates to an adopt magnetic current body seal structure's circulating water turbine, including internal seal device, this internal seal device includes the main shaft, cup joints and sets up main epaxial bearing, casing, end cover, magnet support, between end cover and the casing and all through bolt fixed connection between magnet support and the end cover, the inside fixed mounting magnetic pole of magnet support and the magnet of setting between the magnetic pole seal through O type rubber circle between magnetic pole and the magnet support, leave the clearance in the middle of magnetic pole and the main shaft, magnet, magnetic pole and main shaft form the magnetic circuit, and the clearance is sealed through the magnetic current body.
As an improvement, an annular groove is formed in the bearing end cover, a first water retaining ring is arranged between the bearing end cover and the main shaft, and one end of the first water retaining ring extends into the annular groove. The arrangement of the annular groove is convenient for the leakage phenomenon of sealed liquid possibly occurring along with the increase of the pressure in the bearing end cover or the rotating speed, and for avoiding the seepage liquid from corroding the bearing, the left side of the sealing position of the bearing end cover installation framework type rubber is provided with the annular groove at the bottom of the groove, and even if a small amount of liquid leaks out, the liquid flows back to the water tank from the water hole and cannot be soaked on the bearing.
As an improvement, a framework rubber seal is arranged between the bearing end cover and the main shaft, the framework rubber seal is placed in the bearing end cover to separate a sealed medium from a bearing of the supporting shaft, and a magnet support with a magnetic pole inside is installed at a right spigot of the bearing end cover, so that the bearing end cover, the framework rubber seal, the magnet support, the magnetic pole and the magnetic fluid form an annular space together for sealing.
As an improvement, a second water retaining ring is sleeved on the main shaft.
As an improvement, a screw hole communicated with the annular groove is formed in the position, corresponding to the annular groove, of the bearing end cover.

Claims (5)

1. A circulating water turbine adopting a magnetic fluid sealing structure comprises an internal sealing device, and is characterized in that the internal sealing device comprises a main shaft (1), a bearing (2) sleeved on the main shaft (1), a shell (3), a bearing end cover (4) and a magnet bracket (5), the bearing end cover (4) and the shell (3) and the magnet bracket (5) and the bearing end cover (4) are fixedly connected through bolts (6), the magnet bracket (5) is internally and fixedly provided with magnetic poles (7) and magnets (8) arranged between the magnetic poles (7), the magnetic pole (7) and the magnet bracket (5) are sealed by an O-shaped rubber ring (9), a gap (10) is reserved between the magnetic pole (7) and the main shaft (1), the magnet (8), the magnetic pole (7) and the main shaft (1) form a magnetic circuit, and the gap (10) is sealed through magnetic fluid.
2. A circulating water turbine using a magnetic fluid sealing structure according to claim 1, wherein an annular groove (11) is formed in the bearing end cover (4), a first water retaining ring (12) is arranged between the bearing end cover (4) and the main shaft (1), and one end of the first water retaining ring (12) extends into the annular groove (11).
3. The circulating water turbine adopting the magnetic fluid sealing structure according to claim 1, wherein a skeleton rubber seal (13) is further disposed between the bearing end cover (4) and the main shaft (1).
4. The circulating water turbine adopting the magnetic fluid sealing structure as claimed in claim 1, wherein the main shaft (1) is further sleeved with a second water retaining ring (14).
5. The circulating water turbine adopting the magnetic fluid sealing structure as claimed in claim 2, wherein the bearing end cover (4) is provided with a screw hole (15) communicated with the annular groove (11) at a position corresponding to the annular groove (11).
CN202022092259.7U 2020-09-22 2020-09-22 Circulating water turbine adopting magnetic fluid sealing structure Active CN213271017U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022092259.7U CN213271017U (en) 2020-09-22 2020-09-22 Circulating water turbine adopting magnetic fluid sealing structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022092259.7U CN213271017U (en) 2020-09-22 2020-09-22 Circulating water turbine adopting magnetic fluid sealing structure

Publications (1)

Publication Number Publication Date
CN213271017U true CN213271017U (en) 2021-05-25

Family

ID=75944856

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022092259.7U Active CN213271017U (en) 2020-09-22 2020-09-22 Circulating water turbine adopting magnetic fluid sealing structure

Country Status (1)

Country Link
CN (1) CN213271017U (en)

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