CN110410356A - A kind of oil-leakage treatment method at centrifugal blower bearing housing oil sealing - Google Patents
A kind of oil-leakage treatment method at centrifugal blower bearing housing oil sealing Download PDFInfo
- Publication number
- CN110410356A CN110410356A CN201910731319.4A CN201910731319A CN110410356A CN 110410356 A CN110410356 A CN 110410356A CN 201910731319 A CN201910731319 A CN 201910731319A CN 110410356 A CN110410356 A CN 110410356A
- Authority
- CN
- China
- Prior art keywords
- plate
- shield
- bearing housing
- centrifugal blower
- oil sealing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/0563—Bearings cartridges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
Abstract
The invention discloses a kind of oil-leakage treatment methods at centrifugal blower bearing housing oil sealing, and gear coupling is isolated, and destroy negative-pressure sealing chamber；The invention also discloses preventing permeability structure at a kind of centrifugal blower bearing housing oil sealing, including, for protecting the shield of shaft coupling, for the plate of auxiliary protection shaft coupling, plate is installed on the inside of shield.Gear coupling can be effectively isolated by the present invention, destroyed rotation negative pressure, eliminated suction force, return to axle envelope lubricating oil normally inside bearing housing from oil-recovery tank.
Description
Technical field
The present invention relates to machinery fields, specifically, being related to a kind of oil-leakage treatment method at centrifugal blower bearing housing oil sealing.
Background technique
In thermal power plant, with the change of unit capacity, centrifugal blower plays different roles in factory, according to
Purposes can be divided into primary air fan, pressure fan, desulfurization Aeration fan, dilution air etc., these blowers are set in power generation auxiliary
It plays an important role in standby, their reliability extremely closes the control of unit safety stable operation, desulphurization and denitration index parameter
It is important, while affecting production cost, level of carrying out production strictly in line with rules and regulations.Fan rotor is supported by bearing housing, and blower leans on motor drive, in
Between transmitting torque is connected by shaft coupling, shaft coupling need to be effectively isolated with shield, prevent rotation machinery from hurting sb.'s feelings.In certain feelings
Under condition, there is different degrees of oil leakage phenomenon at bearing box shaft seal and main shaft seal during equipment continuous operation, cause daily
Maintenance workload increases, and goods and materials loss increases, and operating cost improves.
It has been recognised by the inventors that the reason of making this phenomenon, it is in the method to bearing box shaft seal oil leak processing, it will not be tooth-like
Shaft coupling is effectively isolated, and is destroyed rotation negative pressure, is eliminated suction force, axle envelope lubricating oil cannot be returned normally in bearing housing from oil-recovery tank
Portion.
Summary of the invention
For in the method for existing bearing box shaft seal oil leak processing, gear coupling is not effectively isolated, destroys rotation
Turn negative pressure, eliminate suction force, axle envelope lubricating oil cannot normally return to the deficiency inside bearing housing from oil-recovery tank, and the present invention is directed to mention
For a kind of oil-leakage treatment method at centrifugal blower bearing housing oil sealing, gear coupling can be effectively isolated, destroy rotation negative pressure,
Suction force is eliminated, returns to axle envelope lubricating oil normally inside bearing housing from oil-recovery tank.
The first object of the present invention is to provide a kind of oil-leakage treatment method at centrifugal blower bearing housing oil sealing.
The second object of the present invention, being to provide at a kind of centrifugal blower bearing housing oil sealing prevents permeability structure.
For achieving the above object, the invention discloses following technical proposals:
First the invention discloses a kind of oil-leakage treatment method at centrifugal blower bearing housing oil sealing, by gear coupling every
From destruction negative-pressure sealing chamber.
Specifically, the following steps are included:
1) closure plate is installed additional along two sides axially back and forth in semicircular arc coupler protective casing；
2) the semi arch shaft coupling up and down that installation adds closure plate later has gear coupling by the closure plate on shield
Effect isolation, eliminates negative pressure chamber, so that negative pressure chamber will not aspirate lubricating oil from bearing box shaft seal.
Secondly the invention discloses preventing permeability structure at a kind of centrifugal blower bearing housing oil sealing, including,
For protecting the shield of shaft coupling,
For the plate of auxiliary protection shaft coupling,
Plate is installed on the inside of shield；After shield opposed installation, plate is capable of forming the package shaft coupling
Cavity.
Further, the shield is arc-shaped, and the plate is fan-shaped, the side of the plate connection and the shield
Shape it is corresponding with the shape on the inside of the shield.
Further, it is tightly connected between the shield and the plate.
Further, the spacing between the inside and shaft coupling of the plate is 0.5~1.5mm.
Further, the spacing between 2 plates is greater than the length of shaft coupling.
Further, the internal diameter of the plate is greater than the outer diameter for the axis that the shaft coupling is connected.
Further, the plate is connected to multiple shields, also, when the combination of multiple shields, is connected to more
The corresponding plate of a shield can offset.
Further, the inside of the shield is equipped with the slot for indicating the plate installation site.
Permeability structure is prevented at centrifugal blower bearing housing oil sealing disclosed in this invention, principle is, due to as rotor
Gear coupling in the course of rotation, the air-flow of high-speed rotating rotor surface can be with rotor motion, thus with the external world
Atmosphere generates pressure difference, and external atmosphere pressure is higher than peritrochanteric air pressure, and ambient atmosphere can be pushed by external atmosphere pressure, to be formed negative
Potential source.And using permeability structure is prevented at the centrifugal blower bearing housing oil sealing in the present embodiment, it is hindered by being arranged in shield
The closure plate for keeping off air-flow, effectively can stop ambient atmosphere to enter.
Compared with prior art, the present invention achieve it is following the utility model has the advantages that
1) it in the present invention, by using plate, has obstructed and has been formed in the course of rotation as the gear coupling of rotor
Negative pressure source, effectively ambient atmosphere can be stopped to enter；In turn, the resistance to the negative pressure source close to axle envelope may be implemented in the present invention
Every, it is ensured that negative pressure source will not generate suction to axle envelope again, prevent axle envelope oil leak.
2) in the present invention, the relationship that simultaneously non-close connects between the plate and the axis of shaft coupling, those skilled in the art
The attachment device that member can alternatively be used such as bearing one kind carries out auxiliary connection, and comparatively, use of the present invention is relatively simple
Single structure breaks the formation of Huan Liao negative pressure chamber environment.
3) in the present invention, for the status that shield is generally employed in pairs, plate is respectively mounted to each shield, and really
It protects after opposed installation, the plate on shield that do not survey can offset, with relative closure shaft coupling, by the shaft coupling of relative closure
Device in the rotation, can be by the air inlet air-breathing of shield, to avoid the air-breathing directly from oil sealing.
Detailed description of the invention
The Figure of description for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is that embodiment 2 and embodiment 3 found view schematic diagram,
Fig. 2 is negative pressure oil suction schematic illustration in background technique,
Fig. 3 is embodiment 2,3 schematic illustrations.
In figure, 1, ear, 2, side plate, 3, closure plate, 4, screw hole, 5, gear coupling, 6, shield, 7, oil sealing.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As described in background, in the method handled for existing bearing box shaft seal oil leak, not by tooth-like shaft coupling
Device is effectively isolated, and is destroyed rotation negative pressure, is eliminated suction force, axle envelope lubricating oil cannot be returned normally inside bearing housing from oil-recovery tank
Deficiency, the present invention is intended to provide a kind of oil-leakage treatment method at centrifugal blower bearing housing oil sealing, it can be effective by gear coupling
Isolation destroys rotation negative pressure, eliminates suction force, return to axle envelope lubricating oil normally inside bearing housing from oil-recovery tank, now in conjunction with attached
Figure and specific embodiment are further illustrated the present invention.
Embodiment 1
Firstly the need of explanation, the Essential Environment in the present embodiment is that gear coupling 5 is closed in by 6 plate of shield
In bearing housing, specifically, gear coupling 5, in closing 6 chamber of shield, rotation forms negative pressure chamber, shield chamber and blower
Bearing box shaft seal closely, with motor bearings box shaft seal only has the gap 1cm, leads to bearing box shaft seal oil leak.
The present embodiment is directed to this problem, discloses following methods, specific steps are as follows:
1) closure plate 3 is installed additional along two sides axially back and forth in semicircular arc coupler protective casing 6；
2) the semi arch shaft coupling up and down that installation adds closure plate 3 later, by the closure plate 3 on shield 6, by gear coupling
5 are effectively isolated, and negative pressure chamber are eliminated, so that negative pressure chamber will not aspirate lubricating oil from bearing box shaft seal.
It is as follows about specific installation procedure:
Firstly, referring to FIG. 1, shield 6 shown in Fig. 1 is arc-shaped shield 6 comprising an arcwall face, with
And the side plate 2 in the bent side of arcwall face two, arc and side plate 2 are integrally casting shapings.The arc-shaped shield 6 it is straight
Side, which is equipped with, is used for bolted ear 1.When disassembling shield 6, need to disassemble the bolt of ear 1 first, then by two
A shield 6 removes out gearbox；
Then, shield 6 inner edge delimit welding region, guarantee shield 6 after mounting, be connected to shield
6 closure plate 3 can offset respectively.In the present embodiment, the welding region is the region where slot；
Later, closure plate 3 is welded at the slot of two shields 6；What closure plate 3 was selected is fanning strip, guarantees company, shaft coupling institute
The axis connect can pass through fanning strip；
Finally, described two shields 6 are installed on 5 outside of gear coupling.
Embodiment 2
Permeability structure is prevented at a kind of centrifugal blower bearing housing oil sealing 7, is based on the centrifugal blower bearing housing in embodiment 1
Prevent permeability method from manufacturing at oil sealing 7, including, the plate for protecting the shield 6 of shaft coupling, for auxiliary protection shaft coupling
Part, plate are installed on the inside of shield 6；After 6 opposed installation of shield, plate is capable of forming the chamber for wrapping up the shaft coupling
Body.
More detailed, the shield 6 is arc-shaped, and the plate is fan-shaped, the plate connection and the shield 6
Side shape it is corresponding with the shape of 6 inside of the shield.Specifically, the shield 6 includes 6 main body of shield,
6 main body of shield is arc-shaped, and two straight flanges of 6 main body of shield have the ear 1 to extend out in order to use bolt
Two shields 6 are connected, the plate is the fanning strip that angle is 180 °.
In order to totally block the entrance channel of ambient atmosphere, it is tightly connected between the shield 6 and the plate.
In order to guarantee the axis that shaft coupling is connected can rotate freely, between the inside and shaft coupling of the plate spacing
For 0.5~1.5mm.
In order to guarantee the normal operation of the shaft coupling, the spacing between 2 plates is greater than the length of shaft coupling, institute
The internal diameter for stating plate is greater than the outer diameter for the axis that the shaft coupling is connected.
More detailed, the plate is connected to 2 shields 6, also, when the combination of multiple shields 6, connection
It can offset in the corresponding plate of multiple shields 6.
More detailed, the inside of the shield 6 is equipped with the slot for indicating the plate installation site.
Implement the present embodiment, can at least obtain following effect:
1) by using plate, the negative pressure source formed in the course of rotation as the gear coupling 5 of rotor has been obstructed,
Effectively ambient atmosphere can be stopped to enter；In turn, the barrier to the negative pressure source close to axle envelope may be implemented in the present invention, it is ensured that negative
Potential source will not generate suction to axle envelope again, prevent axle envelope oil leak.
2) plate described in and between the axis of shaft coupling and the relationship of non-close connection, those skilled in the art can choose
Property using the attachment device of such as bearing one kind carry out auxiliary connection, comparatively, the present invention uses relatively simple structure, broken
The formation of Huan Liao negative pressure chamber environment.
3) status being generally employed in pairs for shield 6, is respectively mounted plate to each shield 6, and ensure right
After setting installation, the plate on shield 6 that do not survey can offset, and with relative closure shaft coupling, be existed by the shaft coupling of relative closure
It, can be by the air inlet air-breathing of shield 6, to avoid directly from air-breathing from oil sealing 7 when rotation；It needs to illustrate
It is that air inlet is generally arranged in current shield, it may be possible to macroscopic aperture, it is also possible to the sightless micropore of naked eyes,
It is also possible to be other sightless ventilating structures of naked eyes, is herein collectively referred to as air inlet.
Embodiment 3
Firstly the need of explanation, in the specific mounting structure of shield 6, shield 6 is mounted to bearing housing, wind
Machine rotor is supported by bearing housing, and blower leans on motor drive, and centre will connect transmitting torque by shaft coupling, and shaft coupling need to be used anti-
Shield 6 is effectively isolated.After carrying out lengthening transformation to coupler protective casing 6, bearing box shaft seal and master during equipment continuous operation
Occur different degrees of oil leakage phenomenon at sealing, the reason is that, shaft coupling is gear coupling 5, and shield 6 lengthens transformation
Afterwards, axis negative pressure chamber easy to form in rotary course has suction force, therefore the present embodiment carries out coupler protective casing 6
Gear coupling 5 is effectively isolated by technical transformation, destroys negative-pressure sealing chamber.
Present embodiment discloses preventing permeability structure at a kind of centrifugal blower bearing housing oil sealing 7, including two pass through bolt
The shield 6 for connecting ear 1 and then connecting, each 6 two sides of shield are equipped with the slot that can be used for connecting closure plate 3, the slot
Outer diameter is less than the outer diameter of shield 6, and the slot internal diameter is less than the internal diameter of shield 6, and the slot is effectively as linkage flag
Setting, for assisting the connection of plate；In the present embodiment, the plate is closure plate 3.
More detailed, the two sides curl connecting lateral plate 2 of the shield 6, the side plate 2 is fan-shaped.It should be noted that
As previously described, therefore the side of the shield 6 can generate oil suction phenomenon against oil sealing 7；It is born since rotor rotation generates
Pressure, necessarily has negative pressure wind road, please refers to and cliques graph 2, the formation in negative pressure air duct, is the negative pressure region and surrounding positioned at peritrochanteric
Atmosphere generates what pressure difference was formed.
About the connection of closure plate 3, in the present embodiment, closure plate 3 is connected in shown shield 6 using the method for welding
Side, and guarantee that the closure plate 3 and the link position of the shield 6 are located at the slot, it is attached using the method for welding,
In order to close connection closure plate 3, thus Po Huan negative pressure chamber structure.
In other embodiments, directly closure plate 3 can also be plugged in the slot, and is bonded using such as epoxy resin
Agent is sealed.
About the specific structure of closure plate 3, the effect of closure plate 3 is in the negative pressure formation item for guaranteeing negative pressure chamber described in broken ring
Part, it is well known that the air-flow of high-speed rotating rotor surface can be with rotor motion, to generate pressure difference with ambient atmosphere, outside
Boundary's atmospheric pressure is higher than peritrochanteric air pressure, and ambient atmosphere can be pushed by external atmosphere pressure, to form negative pressure source.
And using permeability structure is prevented at the centrifugal blower bearing housing oil sealing 7 in the present embodiment, by being set in shield 6
The closure plate 3 for stopping air-flow is set, effectively ambient atmosphere can be stopped to enter.
In the present embodiment, air hole is opened up in 6 main body of shield.Referring to FIG. 3, when closure plate 3 hinders the external world greatly
Gas is entered by oil sealing 7 after the access of 6 main body of shield, and the air hole can achieve the purpose that ventilative.It is tooth-like to balance
Draught head near axis device 5.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of oil-leakage treatment method at centrifugal blower bearing housing oil sealing, which is characterized in that gear coupling is isolated, destroys negative
Means of press seals chamber.
2. oil-leakage treatment method at centrifugal blower bearing housing oil sealing as described in claim 1, which is characterized in that including following step
It is rapid:
1) closure plate is installed additional along two sides axially back and forth in semicircular arc coupler protective casing；
2) installation plus the later semi arch shaft coupling up and down of closure plate, by the closure plate on shield, by gear coupling effectively every
From elimination negative pressure chamber, so that negative pressure chamber will not aspirate lubricating oil from bearing box shaft seal.
3. preventing permeability structure at the centrifugal blower bearing housing oil sealing as described in claim 1~2 any one, feature exists
In, including,
For protecting the shield of shaft coupling,
For the plate of auxiliary protection shaft coupling,
Plate is installed on the inside of shield；After shield opposed installation, plate is capable of forming the chamber for wrapping up the shaft coupling
Body.
4. preventing permeability structure at centrifugal blower bearing housing oil sealing as claimed in claim 3, which is characterized in that the shield
Arc-shaped, the plate is fan-shaped, on the inside of the shape of the side of the plate connection and the shield and the shield
Shape is corresponding.
5. preventing permeability structure at centrifugal blower bearing housing oil sealing as claimed in claim 3, which is characterized in that the shield
It is tightly connected between the plate.
6. preventing permeability structure at centrifugal blower bearing housing oil sealing as claimed in claim 3, which is characterized in that the plate
Spacing between inside and shaft coupling is 0.5~1.5mm.
7. preventing permeability structure at centrifugal blower bearing housing oil sealing as claimed in claim 3, which is characterized in that 2 plates
Spacing between part is greater than the length of shaft coupling.
8. preventing permeability structure at centrifugal blower bearing housing oil sealing as claimed in claim 3, which is characterized in that the plate
Internal diameter is greater than the outer diameter for the axis that the shaft coupling is connected.
9. preventing permeability structure at centrifugal blower bearing housing oil sealing as claimed in claim 3, which is characterized in that the plate point
It is not connected to multiple shields, also, when the combination of multiple shields, the corresponding plate for being connected to multiple shields being capable of phase
It supports.
10. preventing permeability structure at centrifugal blower bearing housing oil sealing as claimed in claim 3, which is characterized in that described is anti-
The inside of shield is equipped with the slot for indicating the plate installation site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910731319.4A CN110410356B (en) | 2019-08-08 | 2019-08-08 | Oil leakage treatment method for oil seal of bearing box of centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910731319.4A CN110410356B (en) | 2019-08-08 | 2019-08-08 | Oil leakage treatment method for oil seal of bearing box of centrifugal fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110410356A true CN110410356A (en) | 2019-11-05 |
| CN110410356B CN110410356B (en) | 2021-06-01 |
Family
ID=68366733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910731319.4A Active CN110410356B (en) | 2019-08-08 | 2019-08-08 | Oil leakage treatment method for oil seal of bearing box of centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110410356B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685369A (en) * | 2021-08-28 | 2021-11-23 | 扬州根源精机工业有限公司 | Water pump coupling protection device |
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| JPH06102213A (en) * | 1992-09-11 | 1994-04-15 | Rigaku Corp | X-ray diffraction apparatus |
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| CN207879890U (en) * | 2017-12-20 | 2018-09-18 | 株洲航发动科南方燃气轮机有限公司 | Gas turbine coupler protective casing |
| CN208294779U (en) * | 2018-04-05 | 2018-12-28 | 朝阳成运橡胶有限公司 | A kind of heating pump of rubber production |
| CN109538309A (en) * | 2018-10-19 | 2019-03-29 | 中国船舶重工集团公司第七〇九研究所 | A kind of shaft end self sealing structure of high revolving speed High Pressure Difference |
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2019
- 2019-08-08 CN CN201910731319.4A patent/CN110410356B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06102213A (en) * | 1992-09-11 | 1994-04-15 | Rigaku Corp | X-ray diffraction apparatus |
| CN203770157U (en) * | 2013-12-30 | 2014-08-13 | 东莞市佛尔盛机电科技有限公司 | Gas ring vacuum pump with separating type structure |
| CN205823983U (en) * | 2016-07-27 | 2016-12-21 | 杰瑞石油天然气工程有限公司 | A kind of centrifugal compressor units and coupling shield |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113685369A (en) * | 2021-08-28 | 2021-11-23 | 扬州根源精机工业有限公司 | Water pump coupling protection device |
| CN113685369B (en) * | 2021-08-28 | 2024-04-26 | 扬州根源精机工业有限公司 | Water pump coupling protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110410356B (en) | 2021-06-01 |
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