CN107676137B - A kind of steam turbine cylinder being covered with thermal insulation material - Google Patents
A kind of steam turbine cylinder being covered with thermal insulation material Download PDFInfo
- Publication number
- CN107676137B CN107676137B CN201710982706.6A CN201710982706A CN107676137B CN 107676137 B CN107676137 B CN 107676137B CN 201710982706 A CN201710982706 A CN 201710982706A CN 107676137 B CN107676137 B CN 107676137B
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- CN
- China
- Prior art keywords
- thermal insulation
- insulation material
- aluminosilicate fiberboard
- bearing block
- aluminosilicate
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/005—Selecting particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/14—Casings modified therefor
- F01D25/145—Thermally insulated casings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of steam turbine cylinders for being covered with thermal insulation material, including rotor, the outer oil catch of bearing block is fixed on rotor, the side for being located at the outer oil catch of bearing block on rotor is provided with labyrinth casing, labyrinth casing side is provided with the first aluminosilicate fiberboard, the labyrinth casing other side is provided with the second aluminosilicate fiberboard, and is coated with magnesium silicate dope layer on the second aluminosilicate fiberboard side table wall.In the present invention, using aluminosilicate fiberboard as thermal insulation material, its thickness is lower, it ensure that the gap between cylinder head portions and the outer oil catch of bearing block, it is excessively high to solve temperature caused by traditional use alumina silicate needle punched blanket thermal insulation material local air flowing property difference, the problem of causing the outer oil catch carbon distribution of bearing block and oil quality of lubricant to deteriorate, the reliability of equipment is enhanced, avoids the problem that occurrence of equipment operation exception even results in equipment fault in operation.
Description
Technical field
The present invention relates to technical field of thermoelectricity more particularly to a kind of steam turbine cylinders for being covered with thermal insulation material.
Background technique
Gap is smaller between axle envelope outer surface and the outer oil catch of bearing block outside steam turbine generator high pressure cylinder and intermediate pressure cylinder end,
Generally in 200mm or so, since gap is too small, traditional alumina silicate needle punched blanket thickness is generally in 50 ~ 60mm, it is difficult to meet construction and want
It asks, therefore the method for installing thermal insulation board additional without laying thermal insulation material is taken in axle envelope outer surface by traditional construction mode outside end
Reduce heat radiation of the axle envelope to oil catch outside bearing block outside end.And in practical applications, since thermal insulation board generally uses metal material
Material production, heating conduction is strong, very little to the heat insulation of end outer shaft envelope heat radiation, causes the outer oil catch temperature mistake of bearing block
It is high.
Simultaneously because cylinder rear ends are closer according to bearing block, traditional alumina silicate needle punched blanket thermal insulation material is laid, heat preservation is total
Thickness fills up the gap insulation material between cylinder end and bearing block, causes pole of divulging information herein about in 300 ~ 350mm
Difference, the outer oil catch surface heat aggregation of bearing block can not shed, and the outer oil catch temperature of bearing block is caused to be up to 200 ~ 300 DEG C.
And the general flash-point of steam turbine oil is at 180 DEG C, although causing fire since the flowing of lubricating oil is extremely difficult at this temperature
Accident, but the rotten of lubricating oil will be caused.On the one hand cause oil quality of lubricant to deteriorate, at another aspect oil catch remaining lubricating oil with
Will cause the outer oil catch carbon distribution of bearing block after tiny sundries mixing in air, gently then cause turbine shafting abnormal vibration, it is heavy then
Cause turbine rotor to damage, even results in equipment breakdown.
Summary of the invention
The purpose of the present invention is to solve disadvantage existing in the prior art, and a kind of thermal insulation material that is covered with proposed
Steam turbine cylinder.
To achieve the goals above, present invention employs following technical solutions: a kind of cylinder of steam turbine being covered with thermal insulation material
Body, including rotor, the outer oil catch of bearing block is fixed on rotor, and the side that the outer oil catch of bearing block is located on rotor is provided with packing
Body, labyrinth casing side are provided with the first aluminosilicate fiberboard, and the labyrinth casing other side is provided with the second aluminosilicate fiberboard, and second
It is coated with magnesium silicate dope layer on the table wall of aluminosilicate fiberboard side, is provided on the second aluminosilicate fiberboard other side table wall resistance to
High-temperature adhesive layer, and high temperature resistant adhesive layer is embedded with sound-absorbing sliver.
It is as above-mentioned technical proposal to further describe:
First aluminosilicate fiberboard and the second aluminosilicate fiberboard are all made of wet hair aluminosilicate fiberboard, thickness in monolayer 10
~20mm.
It is as above-mentioned technical proposal to further describe:
The overall thickness of first aluminosilicate fiberboard, labyrinth casing and the second magnesium silicate fiber plate is 120~240mm.
It is as above-mentioned technical proposal to further describe:
First aluminosilicate fiberboard and the second aluminosilicate fiberboard are that multiple wet hair aluminosilicate fiberboards pass through high temperature resistant
Adhesive layer dislocation is bonded.
It is as above-mentioned technical proposal to further describe:
First aluminosilicate fiberboard and the second aluminosilicate fiberboard thermal coefficient are no more than 0.09w/m.k.
In the present invention, chosen material is more universal first, and for material source than wide, difficulty of construction is lower, implements feasible
Property stronger, small investment, implementation result is obvious, and convenient for compressor emergency shutdown interval construct, it is low to construction period, can be effective
Steam turbine end outer shaft is avoided to seal heat radiation to oil catch outside bearing block, secondly using aluminosilicate fiberboard as thermal insulation material,
Its thickness is lower, ensure that the gap between cylinder head portions and the outer oil catch of bearing block, solves traditional use alumina silicate needle and pierces
Temperature caused by blanket thermal insulation material local air flowing property difference is excessively high, leads to the outer oil catch carbon distribution of bearing block and oil quality of lubricant deterioration
The problem of, the reliability of equipment is enhanced, avoids the problem that occurrence of equipment operation exception even results in equipment fault in operation.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for the steam turbine cylinder for being covered with thermal insulation material proposed by the present invention；
Fig. 2 is the structural schematic diagram of the second aluminosilicate fiberboard of the invention.
Marginal data:
The outer oil catch of 1- bearing block, 2- rotor, the first aluminosilicate fiberboard of 3-, 4- labyrinth casing, 5- magnesium silicate dope layer, 6- the
Two aluminosilicate fiberboards, 7- high temperature resistant adhesive layer, 8- acoustical cotton layer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-2, a kind of steam turbine cylinder being covered with thermal insulation material, including rotor 2 are fixed with bearing block on rotor 2
Outer oil catch 1, the side that the outer oil catch 1 of bearing block is located on rotor 2 are provided with labyrinth casing 4, and 4 side of labyrinth casing is provided with the first silicic acid
Aluminum fiberboard 3,4 other side of labyrinth casing are provided with the second aluminosilicate fiberboard 6, and on 6 side table wall of the second aluminosilicate fiberboard
It is coated with magnesium silicate dope layer 5, is provided with high temperature resistant adhesive layer 7, and resistance to height on 6 other side table wall of the second aluminosilicate fiberboard
Warm adhesive layer 7 is embedded with sound-absorbing sliver 8.
First aluminosilicate fiberboard 3 and the second aluminosilicate fiberboard 6 are all made of wet hair aluminosilicate fiberboard, and thickness in monolayer is
10~20mm, the overall thickness of the first aluminosilicate fiberboard 3, labyrinth casing 4 and the second magnesium silicate fiber plate 6 are 120~240mm, the
One aluminosilicate fiberboard 3 and the second aluminosilicate fiberboard 6 are that multiple wet hair aluminosilicate fiberboards pass through high temperature resistant adhesive layer 7
Dislocation is bonded, and the first aluminosilicate fiberboard 3 and 6 thermal coefficient of the second aluminosilicate fiberboard are no more than 0.09w/
m.k400℃。
Working principle: in use, tapered outer surface is sealed by the steam turbine end outer shaft that is laid in using aluminosilicate fiberboard,
Be firmly bonded layer by layer using high temperature resistant bonding oxidant layer 7 so that aluminosilicate fiberboard layer by layer the fissure of displacement bond, guarantee bond quality and every
Thermal effect, and it is provided with labyrinth casing 5 between the first aluminosilicate fiberboard 3 and the second aluminosilicate fiberboard 6, in use, first
Aluminosilicate fiberboard 3 and the second aluminosilicate fiberboard 5 can reduce the outer oil catch 1 of bearing block by the hot spoke from outer sealing surface
It penetrates, next ensure that the air between bearing block flows, and improve the radiating efficiency of the outer oil catch 1 of bearing block.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of steam turbine cylinder for being covered with thermal insulation material, including rotor (2), which is characterized in that rotor is fixed with bearing on (2)
The outer oil catch (1) of seat, the side that bearing block oil catch (1) outside is located on rotor (2) are provided with labyrinth casing (4), and labyrinth casing (4) side is set
It is equipped with the first aluminosilicate fiberboard (3), labyrinth casing (4) other side is provided with the second aluminosilicate fiberboard (6), and the second alumina silicate
It is coated with magnesium silicate dope layer (5) on the table wall of fiberboard (6) side, is arranged on the table wall of the second aluminosilicate fiberboard (6) other side
Have high temperature resistant adhesive layer (7), and high temperature resistant adhesive layer (7) is embedded with sound-absorbing sliver (8).
2. a kind of steam turbine cylinder for being covered with thermal insulation material according to claim 1, which is characterized in that the first aluminium silicate fiber
Dimension plate (3) and the second aluminosilicate fiberboard (6) are all made of wet hair aluminosilicate fiberboard, and thickness in monolayer is 10~20mm.
3. a kind of steam turbine cylinder for being covered with thermal insulation material according to claim 1, which is characterized in that the first aluminium silicate fiber
The overall thickness for tieing up plate (3), labyrinth casing (4) and the second magnesium silicate fiber plate (6) is 120~240mm.
4. a kind of steam turbine cylinder for being covered with thermal insulation material according to claim 1, which is characterized in that the first aluminium silicate fiber
Dimension plate (3) and the second aluminosilicate fiberboard (6) are that multiple wet hair aluminosilicate fiberboards are misplaced by high temperature resistant adhesive layer (7)
It is bonded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710982706.6A CN107676137B (en) | 2017-10-20 | 2017-10-20 | A kind of steam turbine cylinder being covered with thermal insulation material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710982706.6A CN107676137B (en) | 2017-10-20 | 2017-10-20 | A kind of steam turbine cylinder being covered with thermal insulation material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107676137A CN107676137A (en) | 2018-02-09 |
| CN107676137B true CN107676137B (en) | 2019-04-02 |
Family
ID=61141105
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710982706.6A Active CN107676137B (en) | 2017-10-20 | 2017-10-20 | A kind of steam turbine cylinder being covered with thermal insulation material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107676137B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205833A (en) * | 2006-12-15 | 2008-06-25 | 联合工艺公司 | Thermal barrier coating |
| DE102008000855A1 (en) * | 2008-03-27 | 2009-10-01 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Housing, particularly turbocharger housing for use in devices heated during operation, has partially metallic foam with external surface, which contains coating or sealing, and housing external surface which has metallic structure |
| CN105114136A (en) * | 2015-09-22 | 2015-12-02 | 江苏华电仪征热电有限公司 | Heat insulation method and device for cylinder |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE526905C2 (en) * | 2003-10-15 | 2005-11-15 | Bengt H Nilsson Med Ultirec Fa | Procedure for the extraction of energy and chemicals |
-
2017
- 2017-10-20 CN CN201710982706.6A patent/CN107676137B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101205833A (en) * | 2006-12-15 | 2008-06-25 | 联合工艺公司 | Thermal barrier coating |
| DE102008000855A1 (en) * | 2008-03-27 | 2009-10-01 | Bosch Mahle Turbo Systems Gmbh & Co. Kg | Housing, particularly turbocharger housing for use in devices heated during operation, has partially metallic foam with external surface, which contains coating or sealing, and housing external surface which has metallic structure |
| CN105114136A (en) * | 2015-09-22 | 2015-12-02 | 江苏华电仪征热电有限公司 | Heat insulation method and device for cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107676137A (en) | 2018-02-09 |
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