CN207093156U - A kind of bearing box of steam turbine of vapor-proof - Google Patents
A kind of bearing box of steam turbine of vapor-proof Download PDFInfo
- Publication number
- CN207093156U CN207093156U CN201721074487.3U CN201721074487U CN207093156U CN 207093156 U CN207093156 U CN 207093156U CN 201721074487 U CN201721074487 U CN 201721074487U CN 207093156 U CN207093156 U CN 207093156U
- Authority
- CN
- China
- Prior art keywords
- bearing housing
- steam turbine
- vapor
- bearing
- balance pipe
- 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.)
- Expired - Fee Related
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- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses a kind of bearing box of steam turbine of vapor-proof, including bearing housing body, the side of the bearing housing body is connected with turbine rotor, opposite side is connected with balance pipe, one end of the balance pipe is connected with the inside of the bearing housing body, and the other end is folded upward at, by adding the balance pipe, the negative pressure reduced in bearing housing can be eliminated, and then prevents steam from entering in bearing housing.The utility model solves the problems, such as bearing housing oil mixed with water, not only contribute to prevent that lubricating oil system is got rusty in bearing housing, turbine oil emulsification, the lubricant effect of bearing is ensure that simultaneously, the generation for situations such as avoiding tile kilning, the reliability of unit operation is improved, in addition, being also beneficial to reduce the maintenance cost of bearing housing using the utility model, save maintenance time, and then the also subject of a lecture operating cost of whole steam turbine.
Description
Technical field
A kind of bearing housing is the utility model is related to, is a kind of bearing box of steam turbine of vapor-proof specifically.
Background technology
Steam turbine in the process of running, the problem of being commonly present oil mixed with water, this not only bad for unit reliability service, also
Lubricating oil system part can be caused to get rusty, turbine oil emulsification, affect the lubricant effect of bearing, tile kilning etc. can be more caused when serious
Problem, seriously jeopardize the safe and stable operation of Steam Turbine.
At present, the settling mode of above-mentioned technical problem is usually directly to change labyrinth strip, to reduce air leakage, but replacing and
Maintenance spends the time longer, and needs the unnecessary expense of extra cost, improves the operating cost of steam turbine, is sent out through research
Existing, no matter steam is wherefrom spilt, as long as not entering bearing housing, its harm to Steam Turbine will be obviously reduced, and bearing
Case causes the problem of negative pressure occur, this just provides condition to steam into bearing housing because of function modes such as oil returns.
Therefore, it is necessary to existing steam-turbine system is improved, there is provided a kind of steam turbine bearing of vapor-proof
Case, to solve above-mentioned the deficiencies in the prior art.
Utility model content
The utility model is in order to solve the above problems, it is proposed that a kind of bearing box of steam turbine of vapor-proof, the utility model
Solve the problems, such as bearing housing oil mixed with water, not only contribute to prevent that lubricating oil system is got rusty in bearing housing, turbine oil emulsification, together
When ensure that the lubricant effect of bearing, the generation for situations such as avoiding tile kilning, the reliability of unit operation is improved, in addition, adopting
It is also beneficial to reduce the maintenance cost of bearing housing with the utility model, saves maintenance time, and then the also whole steamer of the subject of a lecture
The operating cost of machine.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of bearing box of steam turbine of vapor-proof, including bearing housing body, the side of the bearing housing body and steam turbine
Rotor connects, and opposite side is connected with balance pipe, and one end of the balance pipe is connected with the inside of the bearing housing body, the other end
It is folded upward at, by adding the balance pipe, the negative pressure reduced in bearing housing can be eliminated, and then prevent steam from entering in bearing housing.
Further, the longitudinal section of the balance pipe is half I-shaped, and its lower end mouth of pipe is inwardly deeply to the bearing
In case, upper end tube nozzle is to prevent from polluting and inside lateral bend.
Further, the cross section of the balance pipe is circular or square that certainly, the cross section of the balance pipe can also
For triangle or other polygons, its core purpose is to realize the pressure to bearing housing case, in principle from circular or square,
It is for the ease of producing, making and install.
Further, the balance pipe is made using galvanized pipe.
Further, the side wall of the opposite side of the bearing housing is provided with observation window, and the observation window is provided with a through hole,
The lower end mouth of pipe of the balance pipe is welded on the periphery of the through hole.
Further, the bearing housing is provided with sealing gland with turbine rotor junction.
Preferably, the sealing gland uses comb-tooth-type oil catch sealing structure.
Further, the comb-tooth-type oil catch sealing structure is covered in the periphery of the steamer rotor, and with steamer rotor
Between there is gap.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model solves the problems, such as bearing housing oil mixed with water, not only contributes to prevent lubricating oil in bearing housing
System is got rusty, turbine oil emulsifies, while ensure that the lubricant effect of bearing, the generation for situations such as avoiding tile kilning, improves machine
Group reliability of operation；
(2) it is also beneficial to reduce the maintenance cost of bearing housing using the utility model, saves maintenance time, and then also say
The operating cost of whole steam turbine is inscribed.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the restriction to the application.
Fig. 1 is the structure chart of bearing housing in the prior art；
Fig. 2 is the mechanism map of the utility model bearing housing；
Wherein：1- bearing housings, 2- turbine rotors, 3- balance pipes, 4- sealing glands, 5- steam trend.
Embodiment：
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As described in background technology, the problem of bearing housing oil mixed with water in the prior art be present, as shown in figure 1,
In steam turbine normal course of operation, bearing housing because the operations such as oil return cause its air pressure inside to be slightly below external atmosphere pressure,
The steam that this negative pressure state results in outside bearing housing is entered in bearing housing, such as mark 5 in Fig. 1, in sealing gland aging
Or when not safeguarding in time, steam enters bearing housing easily through sealing gland, this not only bad for unit reliability service,
It can also cause lubricating oil system part to get rusty, turbine oil emulsification, affect the lubricant effect of bearing, tile kilning can be more caused when serious
The problems such as, seriously jeopardize the safe and stable operation of Steam Turbine, therefore, it is necessary to be improved to prior art.
Following embodiments are a kind of typical embodiment of the application, as shown in Fig. 2 a kind of turbine shaft of vapor-proof
Case, including bearing housing body are held, the side of the bearing housing body is connected with turbine rotor, and opposite side is connected with balance pipe,
One end of the balance pipe is connected with the inside of the bearing housing body, and the other end is folded upward at, can by adding the balance pipe
The negative pressure reduced in bearing housing is eliminated, and then prevents steam from entering in bearing housing.
The longitudinal section of the balance pipe is half I-shaped, and its lower end mouth of pipe inwardly gos deep into the bearing housing, upper end
The mouth of pipe is to prevent from polluting and inside lateral bend.
The cross section of the balance pipe is circular or square, and certainly, the cross section of the balance pipe can also be triangle
It is in order to just in principle from circular or square or other polygons, its core purpose are to realize to the pressure of bearing housing case
In production, making and installation.
The balance pipe is made using galvanized pipe.
The side wall of the opposite side of the bearing housing is provided with the observation window for being used for checking part running status in bearing housing, institute
State observation window and be provided with a through hole, the lower end mouth of pipe of the balance pipe is welded on the periphery of the through hole.
The bearing housing is provided with sealing gland with turbine rotor junction.
The sealing gland uses comb-tooth-type oil catch sealing structure.
The comb-tooth-type oil catch sealing structure is covered in the periphery of the steamer rotor, and has seam between steamer rotor
Gap, on the premise of not influenceing steamer rotor and running well, prevent steam high-volume from entering in bearing housing.
Counted according to actual production, moisture is described in the utility model up to 2000PPM, use in the bearing housing before transformation
Bearing housing, first day moisture can be reduced to 400PM, long-term use of, and moisture is positively retained at 70PPM in bearing housing, meets country
The requirement (requirements of the national standard moisture value≤100PPM) of standard.
The preferred embodiment of the application is the foregoing is only, is not limited to the application, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
It is not new to this practicality although above-mentioned specific embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deformation still in protection model of the present utility model
Within enclosing.
Claims (8)
- A kind of 1. bearing box of steam turbine of vapor-proof, it is characterised in that：Including bearing housing body, the side of the bearing housing body It is connected with turbine rotor, opposite side is connected with balance pipe, and one end of the balance pipe and the inside of the bearing housing body connect Connect, the other end is folded upward at.
- A kind of 2. bearing box of steam turbine of vapor-proof according to claim 1, it is characterised in that：The vertical of the balance pipe cuts Face is half I-shaped, and its lower end mouth of pipe inwardly gos deep into the bearing housing, and upper end tube nozzle is to prevent from polluting and inside lateral bending It is bent.
- A kind of 3. bearing box of steam turbine of vapor-proof according to claim 1, it is characterised in that：The balance pipe it is transversal Face is circular or square.
- A kind of 4. bearing box of steam turbine of vapor-proof according to claim 1, it is characterised in that：The balance pipe is using plating Zinc pipe makes.
- A kind of 5. bearing box of steam turbine of vapor-proof according to claim 1, it is characterised in that：The bearing housing it is another The side wall of side is provided with observation window, and the observation window is provided with a through hole, and the lower end mouth of pipe of the balance pipe is welded on described lead to The periphery in hole.
- A kind of 6. bearing box of steam turbine of vapor-proof according to claim 1, it is characterised in that：The bearing housing and steamer Machine rotor junction is provided with sealing gland.
- A kind of 7. bearing box of steam turbine of vapor-proof according to claim 6, it is characterised in that：The sealing gland uses Comb-tooth-type oil catch sealing structure.
- A kind of 8. bearing box of steam turbine of vapor-proof according to claim 7, it is characterised in that：The comb-tooth-type oil catch is close Seal structure is covered in the periphery of the steamer rotor, and has gap between steamer rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721074487.3U CN207093156U (en) | 2017-08-25 | 2017-08-25 | A kind of bearing box of steam turbine of vapor-proof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721074487.3U CN207093156U (en) | 2017-08-25 | 2017-08-25 | A kind of bearing box of steam turbine of vapor-proof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207093156U true CN207093156U (en) | 2018-03-13 |
Family
ID=61539988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721074487.3U Expired - Fee Related CN207093156U (en) | 2017-08-25 | 2017-08-25 | A kind of bearing box of steam turbine of vapor-proof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207093156U (en) |
-
2017
- 2017-08-25 CN CN201721074487.3U patent/CN207093156U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 Termination date: 20180825 |