CN105545373B - High-back-pressure turbine end vapor seal capable of being rapidly detached - Google Patents
High-back-pressure turbine end vapor seal capable of being rapidly detached Download PDFInfo
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- CN105545373B CN105545373B CN201610080519.4A CN201610080519A CN105545373B CN 105545373 B CN105545373 B CN 105545373B CN 201610080519 A CN201610080519 A CN 201610080519A CN 105545373 B CN105545373 B CN 105545373B
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- cylinder
- seal ring
- labyrinth casing
- steam
- main body
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Classifications
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- 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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention provides a high-back-pressure turbine end vapor seal capable of being rapidly detached, and relates to the energy and power industry. An adjustment gasket A is arranged between a vapor seal main body A and a cylinder lower half part. An adjustment gasket A is arranged between the vapor seal main body A and a cylinder upper half part. The cylinder upper half part is connected with an axle sealing cover through hexagonal socket screws. An adjustment gasket B is arranged between the axial sealing cover and a cylinder seal main body B. The left side of the cylinder seal main body B is connected with one end of an anti-rotating pin A, and the other end of the anti-rotating pin A makes contact with the vapor seal main body A. The right side of the cylinder seal main body B is connected with one end of an anti-rotating pin B, and the other end of the anti-rotating pin B makes contact with a cylinder seal main body C. When the end vapor seal of a unit is replaced, bolts, the pins and other fastening pieces through which the axle sealing cover is connected with the cylinder upper half part and the cylinder lower half part are detached, the axle sealing cover is then detached, a midsplit bolt of a cylinder seal body is detached, the cylinder seal body is composed of two parts which can be taken out of the upper portion after the axle sealing cover is detached, and end vapor seal rings are replaced. After replacement, the end vapor seal rings are installed back according to a reverse sequence, and the end vapor seal can be easily, conveniently and rapidly replaced under the condition of not lifting the cylinder upper half part.
Description
Technical field
The present invention relates to energy power industry, and in particular to a kind of high back pressure steam turbine can fast dismantle end packing.
Background technology
High back pressure steam turbine refers to initial steam pressure between 8MPa ~ 12MPa, back pressure steam of the exhaust steam pressure in 4MPa ~ 7MPa
Turbine.High back pressure steam turbine is by the steam of high parameter（The standard configuration parameter of boiler）Become middle parameter steam, meet technique
On the basis of equipment is with vapour demand, the equipment such as various pumps, blower fan, compressor and generator are driven, while substituting pressure and temperature reducing
Device, improves energy utilization rate.
Steam turbine may cause rotor and packing in running because of reasons such as start and stop, abnormal vibrations or misoperations
Mill is touched, causes the gap between packing and rotor to increase.The end packing pressure reduction of general steam turbine is less, and the increase in gap will not be bright
It is aobvious to increase steam loss, end packing is changed when can repair with steam turbine.And the steam discharge parameter of high back pressure steam turbine 4～7MPa it
Between, exhaust steam pressure is higher, and end packing quantity is limited by factors such as structures so that hold the forward and backward pressure of each steam seal ring of packing
Difference is larger, now, because the increase in gap significantly increases steam loss, and then causes end gland leak-off.Thoroughly to solve end vapour
Gland leak-off problem, it is necessary to change steam seal ring, and during general steam turbine replacing steam seal ring, be required for opening cylinder upper half, work
Amount is very big, and in order to solve, above-mentioned technical problem is special to provide a kind of new technical scheme.
The content of the invention
The invention aims to reduce high back pressure steam turbine change end packing when workload, realize it is simple and efficient,
Spy proposes that a kind of high back pressure steam turbine can fast dismantle end packing.
The technical solution used in the present invention is：A kind of high back pressure steam turbine can fast dismantle end packing, labyrinth casing A and cylinder
Adjust pad A is provided between lower half, adjust pad A is provided between labyrinth casing A and cylinder upper half, cylinder upper half passes through with shaft seal cover
Hexagon socket head cap screw connects, and adjust pad B is provided between shaft seal cover and labyrinth casing B, and labyrinth casing B left sides are connected with stop pin A one end,
The stop pin A other ends contact with labyrinth casing A, and labyrinth casing B right sides are connected with stop pin B one end, the stop pin B other ends and packing
Body C contacts.
Labyrinth casing A inwalls are connected and are provided between the two spring with steam seal ring A outer ring, and steam seal ring A inner ring connects with rotor
Touch, steam seal ring A right side is provided with steam seal ring B, and steam seal ring B outer ring is connected and is provided between the two spring, steam seal ring B with labyrinth casing A
Inner ring contacts with rotor, and described labyrinth casing C is connected with the outer ring of steam seal ring C and is provided with spring between the two, in steam seal ring C
Circle contacts with rotor.
The quantity of described steam seal ring A is three, and the quantity of steam seal ring B is four, and the quantity of steam seal ring C is one.
The invention has the beneficial effects as follows：When unit changes end packing, can first dismantle shaft seal cover and the upper and lower half-connection of cylinder
The securing members such as bolt, pin, then dismantle shaft seal cover, then dismantle labyrinth casing split bolt, and labyrinth casing is made up of two halves, in dismounting
Can take out from top respectively after shaft seal cover, carry out holding the replacing of steam seal ring.After replacing, dress is returned in reverse order, can be with
In the case where cylinder upper half is not opened, end packing is changed, it is simple and efficient.
Description of the drawings：
Fig. 1 is schematic structural view of the invention.
Specific embodiment：
With reference to Fig. 1, a kind of high back pressure steam turbine can fast dismantle end packing, be provided between labyrinth casing A2 and cylinder lower half 15
Adjust pad A3, is provided with adjust pad A3 between labyrinth casing A2 and cylinder upper half 4, cylinder upper half 4 is with shaft seal cover 7 by interior hexagonal
Bolt 8 connects, and adjust pad B9 is provided between shaft seal cover 7 and labyrinth casing B10, and labyrinth casing B10 left sides connect with stop pin A6 one end
Connect, the stop pin A6 other ends contact with labyrinth casing A2, labyrinth casing B10 right sides are connected with stop pin B11 one end, stop pin B11
The other end contacts with labyrinth casing C12.
Labyrinth casing A2 inwalls are connected and are provided between the two spring, steam seal ring A1 inner ring and rotor 14 with steam seal ring A1 outer ring
Contact, steam seal ring A1 right side is provided with steam seal ring B5, and steam seal ring B5 outer ring is connected and is provided between the two spring with labyrinth casing A2,
Steam seal ring B5 inner ring contacts with rotor 14, and described labyrinth casing C12 is connected with the outer ring of steam seal ring C13 and is provided between the two
Spring, steam seal ring C14 inner ring contacts with rotor 14.
The quantity of described steam seal ring A1 is three, and the quantity of steam seal ring B5 is four, and the quantity of steam seal ring C13 is one
It is individual.
Shaft seal cover 7 is provided with vertical flange face and horizontal flange, is fixed by hexagon socket head cap screw 8 and split bolt respectively
In cylinder upper half 4 and cylinder lower half 15, finger setting is axially and transversely used.Each labyrinth casing is connected using split flange, axially fixed
Position is adjusted by adjust pad A3 and adjust pad B9, and located lateral is positioned by split pin, and circumferential anti-rotation is using anti-
Ship and resell on another market A6 and stop pin B11 to realize.When unit needs to change steam seal ring, shaft seal cover 7 can be directly dismantled, then dismantle labyrinth casing
B10 and labyrinth casing C12, then replacing steam seal ring is carried out, in the case where cylinder upper half is not opened, end packing is changed, it is simple and efficient.
Claims (3)
1. a kind of high back pressure steam turbine can fast dismantle end packing, it is characterised in that：Tune is provided between labyrinth casing A and cylinder lower half
Whole pad A, is provided with adjust pad A between labyrinth casing A and cylinder upper half, cylinder upper half is connected with shaft seal cover by hexagon socket head cap screw
Connect, adjust pad B is provided between shaft seal cover and labyrinth casing B, labyrinth casing B left sides are connected with stop pin A one end, and stop pin A is another
End contacts with labyrinth casing A, and labyrinth casing B right sides are connected with stop pin B one end, and the stop pin B other ends contact with labyrinth casing C.
2. high back pressure steam turbine according to claim 1 can fast dismantle end packing, it is characterised in that：Labyrinth casing A inwalls
It is connected and is provided between the two spring with steam seal ring A outer ring, steam seal ring A inner ring contacts with rotor, steam seal ring A right side is provided with vapour
Seal B, steam seal ring B outer ring is connected and is provided between the two spring with labyrinth casing A, and steam seal ring B inner ring contacts with rotor, described
Labyrinth casing C be connected and be provided between the two spring with the outer ring of steam seal ring C, steam seal ring C inner ring contacts with rotor.
3. high back pressure steam turbine according to claim 2 can fast dismantle end packing, it is characterised in that：Described steam seal ring
The quantity of A is three, and the quantity of steam seal ring B is four, and the quantity of steam seal ring C is one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610080519.4A CN105545373B (en) | 2016-02-05 | 2016-02-05 | High-back-pressure turbine end vapor seal capable of being rapidly detached |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610080519.4A CN105545373B (en) | 2016-02-05 | 2016-02-05 | High-back-pressure turbine end vapor seal capable of being rapidly detached |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105545373A CN105545373A (en) | 2016-05-04 |
| CN105545373B true CN105545373B (en) | 2017-05-10 |
Family
ID=55824877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610080519.4A Active CN105545373B (en) | 2016-02-05 | 2016-02-05 | High-back-pressure turbine end vapor seal capable of being rapidly detached |
Country Status (1)
| Country | Link |
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| CN (1) | CN105545373B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761957B (en) * | 2016-11-29 | 2019-03-29 | 东方电气集团东方汽轮机有限公司 | Labyrinth casing structure between a kind of efficient steam turbine high pressure |
| CN111396142A (en) * | 2020-04-25 | 2020-07-10 | 中国船舶重工集团公司第七0三研究所 | Steam seal structure is dismantled to low parameter saturated steam turbine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3915459A (en) * | 1974-05-13 | 1975-10-28 | Dresser Ind | Turbo-machinery seal |
| CN102341628A (en) * | 2009-03-06 | 2012-02-01 | 西门子公司 | Labyrinth sealing bushing for turbo machine and method for assembly of labyrinth seal having said labyrinth sealing bushing |
| CN104314624A (en) * | 2014-08-20 | 2015-01-28 | 东方电气集团东方汽轮机有限公司 | Device and method for monitoring center change of air cylinder in process of covering cylinder of steam turbine |
| CN104832224A (en) * | 2010-12-15 | 2015-08-12 | 三菱重工业株式会社 | Seal structure for turbocharger housing |
| CN205330739U (en) * | 2016-02-05 | 2016-06-22 | 中国船舶重工集团公司第七�三研究所 | End vapor seal can swiftly be dismantled to high back pressure steam turbine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010019190A (en) * | 2008-07-11 | 2010-01-28 | Toshiba Corp | Steam turbine and method of cooling steam turbine |
| JP6049582B2 (en) * | 2013-10-10 | 2016-12-21 | 三菱重工業株式会社 | Steam turbine |
-
2016
- 2016-02-05 CN CN201610080519.4A patent/CN105545373B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3915459A (en) * | 1974-05-13 | 1975-10-28 | Dresser Ind | Turbo-machinery seal |
| CN102341628A (en) * | 2009-03-06 | 2012-02-01 | 西门子公司 | Labyrinth sealing bushing for turbo machine and method for assembly of labyrinth seal having said labyrinth sealing bushing |
| CN104832224A (en) * | 2010-12-15 | 2015-08-12 | 三菱重工业株式会社 | Seal structure for turbocharger housing |
| CN104314624A (en) * | 2014-08-20 | 2015-01-28 | 东方电气集团东方汽轮机有限公司 | Device and method for monitoring center change of air cylinder in process of covering cylinder of steam turbine |
| CN205330739U (en) * | 2016-02-05 | 2016-06-22 | 中国船舶重工集团公司第七�三研究所 | End vapor seal can swiftly be dismantled to high back pressure steam turbine |
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| Publication number | Publication date |
|---|---|
| CN105545373A (en) | 2016-05-04 |
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