CN106854995A - Coal gangue power generation factory turbine low pressure cylinder gland seal device - Google Patents
Coal gangue power generation factory turbine low pressure cylinder gland seal device Download PDFInfo
- Publication number
- CN106854995A CN106854995A CN201510906316.1A CN201510906316A CN106854995A CN 106854995 A CN106854995 A CN 106854995A CN 201510906316 A CN201510906316 A CN 201510906316A CN 106854995 A CN106854995 A CN 106854995A
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- Prior art keywords
- axle
- low pressure
- sealing body
- block
- axle envelope
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- 210000004907 gland Anatomy 0.000 title claims abstract description 21
- 239000003245 coal Substances 0.000 title claims abstract description 19
- 238000010248 power generation Methods 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 58
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 52
- 230000001413 cellular effect Effects 0.000 claims abstract description 46
- 239000010439 graphite Substances 0.000 claims abstract description 39
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 39
- 238000009304 pastoral farming Methods 0.000 claims abstract description 32
- 229910000859 α-Fe Inorganic materials 0.000 claims abstract description 21
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 3
- 241000256844 Apis mellifera Species 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- -1 with wear-resisting Substances 0.000 description 1
Landscapes
- Sealing Devices (AREA)
Abstract
The invention provides a kind of coal gangue power generation factory turbine low pressure cylinder gland seal device, including：It is sequentially sleeved at carbon seal ring, axle envelope circle, low pressure (LP) cylinder axle envelope set on the axle of low pressure (LP) cylinder, and coil component spring circle for fastener shaft seal and, be equally set in interior cellular sealing body, outer cellular sealing body, interior ferrite dentation seal, outer ferrite dentation seal on the axle of low pressure (LP) cylinder；Turn be set in axle envelope circle it is cylindrical on；Polylith spring leaf is corresponded with graphite grazing block and set, and is stuck between the inwall of graphite grazing block and interior ring annular groove.Circumferentially direction is divided into several pieces for carbon seal ring of the invention and axle envelope circle, and can follow the displacement of axle closely per portion does radial yield, thus ensuring that rotor have radially wobble in the case of be always maintained at and axle stable operation；And make between sealing ring and rotating shaft reduce abrasion, effectively prevent high-quality steam leakage and steam turbine on the outside of air to steam turbine internal leakage.
Description
Technical field
The present invention relates to turbine shaft seal technical field, and in particular to a kind of coal gangue power generation factory steam turbine low-pressure
Cylinder shaft seal apparatus.
Background technology
At present, the shaft end seal of Steam Turbine in Fire Power Plant low pressure (LP) cylinder is usually using single cellular sealing
Body, the hardness of the hardness more than low pressure cylinder shaft of the seal, in order to obtain preferable sealing effectiveness, typically will
Gap between cellular sealing body and low pressure cylinder shaft be designed to it is smaller, when low pressure cylinder shaft occur heat expansion when,
The phenomenon that cellular sealing body pulls low pressure cylinder shaft is susceptible to, both gaps are increased, steamer is caused
Machine low pressure (LP) cylinder body drain tolerance increases, and steam turbine vacuum degree is deteriorated.The increase of turbine low pressure cylinder body drain tolerance is held
Back pressure increases in easily making steam-turbine unit running, causes steam turbine end loss to increase, the steam turbine steam consumption
Rate increases, internal efficiency reduction；Meanwhile, the increase of steam-turbine unit back pressure, be also easy to cause exhaust steam pressure,
The rising of exhaust temperature, reduces the economy of steam turbine, low pressure (LP) cylinder swollen difference is will also cause when serious exception occurs
Change and low pressure (LP) cylinder deform, and change unit machine center, cause unit vibration acutely, cause steamer
Machine disorderly closedown.Additionally, when the axle envelope imprecision of steam turbine low-pressure cylinder body, implementing to improve vacuum
During measure, big shaft seal steam pressure and steam supply flow is opened, gland packing leakage can be caused to enter into lubricating oil system,
Increase the moisture in oil, emulsification of lubricant can be caused, adhesiveness is bad, and oil film is destroyed, and can make
Bearing tungsten financeization, bearing shell scaling loss, unit sharp pounding, or even destroy unit.
The content of the invention
The present invention proposes a kind of coal gangue power generation factory turbine low pressure cylinder gland seal device, to solve existing vapour
Turbine low pressure (LP) cylinder axle envelope is susceptible to imprecise problem.
The technical proposal of the invention is realized in this way：
A kind of coal gangue power generation factory turbine low pressure cylinder gland seal device, including：Low pressure (LP) cylinder axle envelope set, its inner side
Outer ring annular groove is offered on face；The axle envelope circle that polylith section is constituted in I-shaped axle envelope arc block, every piece
The outboard end of axle envelope arc block is stuck in outer ring annular groove, and gap is left between adjacent axle envelope arc block；Axle envelope
The medial surface centre of arc block offers interior ring annular groove；For the coil component spring circle of fastener shaft seal, set
Be located at axle envelope circle it is cylindrical on, in outer ring annular groove；The carbon seal ring of polylith graphite grazing block composition,
Graphite grazing block is corresponded with axle envelope arc block and set；The outboard end of every piece of graphite grazing block is stuck in interior ring
In shape groove, the medial extremity of graphite grazing block is connected together with the axle movable top of low pressure (LP) cylinder；Adjoining graphite sealing block
Between leave gap；Polylith and graphite grazing block correspond the spring leaf for setting, be stuck in graphite grazing block with
Between the inwall of interior ring annular groove；Circular interior cellular sealing body and outer cellular sealing body, is respectively provided with
In the both sides of carbon seal ring；The both sides of interior cellular sealing body set ferrite dentation seal in a pair；
The both sides of outer cellular sealing body set an external ferrite dentation seal；Interior cellular sealing body, outer honeybee
Nest shape seal, interior ferrite dentation seal, outer ferrite dentation seal are set in the axle of low pressure (LP) cylinder
On, and radial clearance is left between axle；Carbon seal ring, axle envelope circle, low pressure (LP) cylinder axle envelope set are arranged successively
On the axle of low pressure (LP) cylinder.
Beneficial effects of the present invention are as follows：
1st, circumferentially direction is divided into several pieces for carbon seal ring of the invention and axle envelope circle, per a energy radially
3 millimeters are retreated, sensitivity is high, and radial yield is done in the displacement that can follow rotating shaft closely, thus ensuring that rotor has footpath
It is always maintained in the case of to swing and axle stable operation；Axle envelope circle can be adjusted to former gland sealing gear radial clearance
Be beyond one's reach 0.05-0.10 millimeters of radial clearance；Effectively prevent outside leakage and the steam turbine of high-quality steam
The air of side ensures that turbine vacuum system has good vacuum performance to steam turbine internal leakage, that is, ensure that vapour
The internal efficiency of turbine unit；
2nd, the present invention has limit function, and spring is set and axle envelope arc block between by being covered in low pressure (LP) cylinder axle envelope
Spring leaf is set between circle and axle envelope arc block and graphite grazing block, entering for sealing ring can be effectively limited
To amount, make to reduce abrasion between sealing ring and rotating shaft, and ensure between ferrite dentation seal and rotating shaft forever
It is remote to keep installation and operation gap.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to implementing
Example or the accompanying drawing to be used needed for description of the prior art are briefly described, it should be apparent that, describe below
In accompanying drawing be only some embodiments of the present invention, for those of ordinary skill in the art, do not paying
On the premise of going out creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of coal gangue power generation factory turbine low pressure cylinder gland seal device in embodiment；
Fig. 2 is partial sectional view of the view shown in Fig. 1 on A-A directions.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the invention, rather than
Whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work under the premise of the every other embodiment that is obtained, belong to the scope of protection of the invention.
As illustrated in fig. 1 and 2, it is the structure of coal gangue power generation factory turbine low pressure cylinder gland seal device in embodiment
Schematic diagram.
Coal gangue power generation factory turbine low pressure cylinder gland seal device in illustrative embodiment, including：It is arranged successively
Carbon seal ring 60, axle envelope circle 30, low pressure (LP) cylinder axle envelope set 1 on the axle 14 of low pressure (LP) cylinder, and for tight
Gu the and of coil component spring circle 4 of axle envelope circle 30, is equally set in the interior cellular sealing on the axle 14 of low pressure (LP) cylinder
Body 9, outer cellular sealing body 11, interior ferrite dentation seal 8, outer ferrite dentation seal 10；
Wherein,
Outer ring annular groove 2 is offered on the medial surface of low pressure (LP) cylinder axle envelope set 1；Polylith section is in I-shaped axle envelope
The composition axle envelope of arc block 3 circle 30, the outboard end of every piece of axle envelope arc block 3 is stuck in outer ring annular groove 2, phase
Gap is left between adjacent axle envelope arc block 3；The medial surface centre of axle envelope arc block 3 offers inner ring annular
Groove 5；Turn 4 be set in axle envelope circle 30 it is cylindrical on, in outer ring annular groove 2；Polylith graphite is close
The envelope composition carbon seal ring 60 of block 6, graphite grazing block 6 is corresponded with axle envelope arc block 3 and set；Every piece
The outboard end of graphite grazing block 6 is stuck in interior ring annular groove 5, the medial extremity and low pressure (LP) cylinder of graphite grazing block 6
The movable top of axle 14 be connected together；Gap is left between adjoining graphite sealing block 6；Polylith and graphite grazing block
6 correspond the spring leaf 7 for setting, and are stuck between the inwall of graphite grazing block 6 and interior ring annular groove 5；Circle
The interior cellular sealing body 9 and outer cellular sealing body 11 of shape are separately positioned on the both sides of carbon seal ring 60；
The both sides of interior cellular sealing body 9 set ferrite dentation seal 8 in a pair；Outer cellular sealing body 11
Both sides set an external ferrite dentation seal 10；Interior cellular sealing body 9, outer cellular sealing body
11st, radial clearance is left between interior ferrite dentation seal 8, outer ferrite dentation seal 10 and axle 14.
Preferably, the quantity of axle envelope arc block 3 is 6-10 blocks, selects integer block.It is highly preferred that in order to just
In processing, the arc length of polylith axle envelope arc block 3 is identical, i.e., axle envelope circle 30 is divided into polylith axle envelope arc block 3；
The arc length of polylith graphite grazing block 6 is also identical, i.e. carbon seal ring 60 is divided into polylith graphite grazing block 6.
Preferably, the gap between adjacent axle envelope arc block 3 is 0.40mm-0.06mm.
Preferably, the gap between adjoining graphite sealing block 6 is 0.40mm-0.06mm.
Be preferably located at outside interior ferrite dentation seal 8 and outer ferrite dentation seal 10 it is outer
Side flushes with the both sides of axle envelope circle 30.
In embodiment, the both sides of every piece of medial extremity of axle envelope arc block 3 offer the interior drain tank for running through respectively
12 and outer drain tank 13, interior drain tank 12 is connected with interior cellular sealing body 9, outer drain tank 13 and outer honeybee
Nest shape seal 11 is connected.Cellular sealing body (interior cellular sealing body 9 and outer cellular sealing body 11
General designation) in honeycomb grid to the moisture content in steam flow with condensation act on, due to the special knot of Honeycomb steam seal
Structure, can have extremely strong suction-operated, therefore apply in low pressure shaft seal from wet steaming to the gas of certain humidity
Vapour erosion, and water is smoothly discharged from the interior drain tank 12 and outer drain tank 13 of bottom and prevents water erosion axle vapour
Envelope, improves the axle envelope life-span, it is ensured that dynamic balancing, is conducive to the safe operation of steam-turbine unit.
In normal operation, rotor is to float to steam turbine, during each section of axle envelope of adjustment, it is ensured that interior cellular
Seal 9, outer cellular sealing body 11 and graphite grazing block 6 arrive axle to the gap of the top of axle 14 more than it
The gap of 14 lower sections.
Be preferably located at the interior cellular sealing body 9 on top, between outer cellular sealing body 11 and axle 14
Radial clearance is 0.55mm-0.65mm, interior cellular sealing body 9, outer cellular sealing body positioned at bottom
Radial clearance between 11 and axle 14 is 0.40mm-0.55mm, positioned at the interior cellular sealing body of the left and right sides
9th, the radial clearance between outer cellular sealing body 11 and axle 14 is 0.40mm-0.50mm.
The radial clearance being preferably located between the graphite grazing block 6 on top and axle 14 is 0.10mm-
0.15mm, the radial clearance between the graphite grazing block 6 and axle 14 of bottom is 0.05mm-0.10mm,
Radial clearance between the graphite grazing block 6 and axle 14 of the left and right sides is 0.05mm-0.10mm.
Circumferentially direction is divided into several pieces for carbon seal ring 60 and axle envelope circle 30 in above-described embodiment, per a
Energy footpath is drawn back 3 millimeters, and sensitivity is high, and radial yield is done in the displacement that can follow rotating shaft closely, thus ensuring that
Rotor have radially wobble in the case of be always maintained at and axle stable operation；Turn is not only acted as makes axle envelope circle 30
The effect of yielding, while also polylith axle envelope arc block tightens together；Axle envelope circle 30 can adjust radial clearance
Whole to former gland sealing gear is beyond one's reach 0.05-0.10 millimeters of radial clearance；Effectively prevent the outer of high-quality steam
Air on the outside of leakage and steam turbine ensures that turbine vacuum system has good vaccum to steam turbine internal leakage
Can, that is, ensure that the internal efficiency of steam-turbine unit.The present invention has limit function, by low pressure (LP) cylinder axle envelope set
Set and axle envelope arc block between turn and axle envelope arc block and graphite grazing block and spring leaf be set,
The amount of feeding of sealing ring can be effectively limited, makes to reduce abrasion between sealing ring and rotating shaft, and ensure ferrite
Installation and operation gap is permanently retained between dentation seal and rotating shaft；With the contact portion material of axle in embodiment
Material uses nonmetallic polynary graphite composite material, with wear-resisting, oil resistant, high temperature resistant, ageing-resistant, chemically-resistant
The characteristics such as corrosion, and with self-lubricating function.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in this hair
Within bright spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in this hair
Within bright protection domain.
Claims (10)
1. a kind of coal gangue power generation factory turbine low pressure cylinder gland seal device, it is characterised in that including：
Low pressure (LP) cylinder axle envelope set (1), offers outer ring annular groove (2) on its medial surface；
The axle envelope circle (30) that polylith section is constituted in I-shaped axle envelope arc block (3), every piece of axle envelope
The outboard end of arc block (3) is stuck in outer ring annular groove (2), between the adjacent axle envelope arc block (3)
Leave gap；The medial surface centre of the axle envelope arc block (3) offers interior ring annular groove (5)；
Coil component spring circle (4) for fastening the axle envelope circle (30), is set in the axle envelope circle (30)
It is cylindrical on, in the outer ring annular groove (2)；
The carbon seal ring (60) of polylith graphite grazing block (6) composition, the graphite grazing block (6) and institute
State axle envelope arc block (3) and correspond setting；In the outboard end of every piece of graphite grazing block (6) is stuck in
In ring annular groove (5), the medial extremity of the graphite grazing block (6) and axle (14) movable top of low pressure (LP) cylinder
It is connected together；Gap is left between the adjacent graphite grazing block (6)；
Polylith corresponds the spring leaf (7) for setting with the graphite grazing block (6), is stuck in the graphite close
Between envelope block (6) and the inwall of the interior ring annular groove (5)；
Circular interior cellular sealing body (9) and outer cellular sealing body (11), are separately positioned on the stone
The both sides of black sealing ring (60)；The both sides of the interior cellular sealing body (9) set ferrite tooth in a pair
Shape seal (8)；The both sides of the outer cellular sealing body (11) set an external ferrite dentation sealing
Body (10)；The interior cellular sealing body (9), the outer cellular sealing body (11), the interior iron element
Body dentation seal (8), the outer ferrite dentation seal (10) are set in the axle of the low pressure (LP) cylinder
(14) on, and radial clearance is left between the axle (14)；
The carbon seal ring (60), the axle envelope circle (30), the low pressure (LP) cylinder axle envelope set (1) cover successively
It is located on the axle of the low pressure (LP) cylinder (14).
2. coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 1, its feature exists
In the quantity of the axle envelope arc block (3) is 6-10 blocks.
3. coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 1 and 2, it is special
Levy and be, the arc length of axle envelope arc block (3) is identical described in polylith, graphite grazing block (6) described in polylith
Arc length is identical.
4. coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 1, its feature exists
In positioned at the described interior ferrite dentation seal (8) and the outer ferrite dentation seal (10) in outside
Outside flushed with the both sides of the axle envelope circle (30).
5. the coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 1 or 4, it is special
Levy and be, the both sides of every piece of medial extremity of the axle envelope arc block (3) offer the interior drain tank for running through respectively
(12) and outer drain tank (13), the interior drain tank (12) and the interior cellular sealing body (9) be even
Logical, the outer drain tank (13) connects with the outer cellular sealing body (11).
6. the coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 1 or 4, it is special
Levy and be, the gap between the adjacent axle envelope arc block (3) is 0.40mm-0.06mm.
7. the coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 1 or 4, it is special
Levy and be, the gap between the adjacent graphite grazing block (6) is 0.40mm-0.06mm.
8. the coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 1 or 4, it is special
Levy and be, the interior cellular sealing body (9), the outer cellular sealing body (11) and the graphite
Gap above sealing block (6) to the axle (14) is more than the gap that it is arrived below the axle (14).
9. coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 8, its feature exists
In, the superposed interior cellular sealing body (9), the outer cellular sealing body (11) with it is described
Radial clearance between axle (14) is 0.55mm-0.65mm, positioned at the described interior cellular sealing body of bottom
(9), the outer cellular sealing body (11) is with the radial clearance between the axle (14)
0.40mm-0.55mm, it is described interior cellular sealing body (9) positioned at the left and right sides, described outer cellular close
Radial clearance between envelope body (11) and the axle (14) is 0.40mm-0.50mm.
10. coal gangue power generation factory turbine low pressure cylinder gland seal device according to claim 8, its feature
It is that the superposed graphite grazing block (6) is with the radial clearance between the axle (14)
0.10mm-0.15mm, the radial direction between the graphite grazing block (6) of bottom and the axle (14)
Gap is 0.05mm-0.10mm, positioned at the graphite grazing block (6) and the axle (14) of the left and right sides
Between radial clearance be 0.05mm-0.10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906316.1A CN106854995A (en) | 2015-12-09 | 2015-12-09 | Coal gangue power generation factory turbine low pressure cylinder gland seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510906316.1A CN106854995A (en) | 2015-12-09 | 2015-12-09 | Coal gangue power generation factory turbine low pressure cylinder gland seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106854995A true CN106854995A (en) | 2017-06-16 |
Family
ID=59131983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510906316.1A Pending CN106854995A (en) | 2015-12-09 | 2015-12-09 | Coal gangue power generation factory turbine low pressure cylinder gland seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106854995A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915787A (en) * | 2018-08-09 | 2018-11-30 | 中国船舶重工集团公司第七0三研究所 | A kind of steam turbine helixseal structure |
| CN110206593A (en) * | 2019-07-04 | 2019-09-06 | 杭州汽轮机股份有限公司 | Floating can make a concession formula interstage gland |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5161942A (en) * | 1990-10-24 | 1992-11-10 | Westinghouse Electric Corp. | Moisture drainage of honeycomb seals |
| CN101328815A (en) * | 2007-06-22 | 2008-12-24 | 齐传正 | Free ring contact type gapless sealing technology |
| CN101660430A (en) * | 2009-09-08 | 2010-03-03 | 南京信润科技有限公司 | Telescopic brush type gland ring |
| JP2013148167A (en) * | 2012-01-19 | 2013-08-01 | Toshiba Corp | Shaft sealing device and rotary machine |
| CN203347848U (en) * | 2013-05-30 | 2013-12-18 | 上海丹迪电力技术有限公司 | Movable ferrite tooth inner ring type honeycomb seal structure |
| CN205189963U (en) * | 2015-12-09 | 2016-04-27 | 山西国峰煤电有限责任公司 | Gangue power plant steam turbine low pressure jar bearing seal device |
-
2015
- 2015-12-09 CN CN201510906316.1A patent/CN106854995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5161942A (en) * | 1990-10-24 | 1992-11-10 | Westinghouse Electric Corp. | Moisture drainage of honeycomb seals |
| CN101328815A (en) * | 2007-06-22 | 2008-12-24 | 齐传正 | Free ring contact type gapless sealing technology |
| CN101660430A (en) * | 2009-09-08 | 2010-03-03 | 南京信润科技有限公司 | Telescopic brush type gland ring |
| JP2013148167A (en) * | 2012-01-19 | 2013-08-01 | Toshiba Corp | Shaft sealing device and rotary machine |
| CN203347848U (en) * | 2013-05-30 | 2013-12-18 | 上海丹迪电力技术有限公司 | Movable ferrite tooth inner ring type honeycomb seal structure |
| CN205189963U (en) * | 2015-12-09 | 2016-04-27 | 山西国峰煤电有限责任公司 | Gangue power plant steam turbine low pressure jar bearing seal device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915787A (en) * | 2018-08-09 | 2018-11-30 | 中国船舶重工集团公司第七0三研究所 | A kind of steam turbine helixseal structure |
| CN110206593A (en) * | 2019-07-04 | 2019-09-06 | 杭州汽轮机股份有限公司 | Floating can make a concession formula interstage gland |
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Application publication date: 20170616 |