CN108895163A - A kind of compound axle sealing structure of high temperature and high speed - Google Patents
A kind of compound axle sealing structure of high temperature and high speed Download PDFInfo
- Publication number
- CN108895163A CN108895163A CN201811106773.2A CN201811106773A CN108895163A CN 108895163 A CN108895163 A CN 108895163A CN 201811106773 A CN201811106773 A CN 201811106773A CN 108895163 A CN108895163 A CN 108895163A
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- CN
- China
- Prior art keywords
- seals
- dry gas
- casing
- comb
- high temperature
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 150000001875 compounds Chemical class 0.000 title claims abstract description 11
- 238000009413 insulation Methods 0.000 claims abstract description 15
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000005192 partition Methods 0.000 claims description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/44—Free-space packings
- F16J15/447—Labyrinth packings
Abstract
The invention discloses a kind of compound axle sealing structures of high temperature and high speed, including shaft and casing, there is the side of medium as inside using casing internal, with outer for outside outside casing, successively it is equipped with Comb Labyrinth Seals, dry gas seals and carbon ring seal from inside to outside between shaft and casing, the thermal insulation board that dry gas seals are transmitted to for high-temperature on the inside of preventing is fixed on the inside of Comb Labyrinth Seals, the thermal insulation board is fixed on the medial surface of Comb Labyrinth Seals by fixing bolt；Multiple preposition stomatas revealed by Comb Labyrinth Seals to dry gas seals side for high temperature gas medium on the inside of preventing are equipped in Comb Labyrinth Seals around circumferential direction, are connected with high pressure gas in preposition stomata；Circulating cooling water route is equipped in dry gas seals periphery；Integral installation structure is simple, and job stability is strong, long service life, realizes the basic zero leakage requirement of medium.
Description
Technical field
The invention belongs to air blower and shaft seal for compressor technical field, in particular to a kind of compound profile shaft of high temperature and high speed is close
Seal structure is applied in the working environment that fan operation temperature is high, revolving speed is high, dielectric leakage amount is substantially zeroed.
Background technique
Fan Equipment sealing at present mainly has three kinds of Comb Labyrinth Seals, carbon ring seal and dry gas seals forms.Wherein
Comb Labyrinth Seals have many advantages, such as that structure is simple, low in cost, easy for installation, but quantity of gas leakage is larger, and comb teeth is mostly aluminium
Alloy product is not applied for the high revolving speed of high temperature and the high environment of gas seal requirement.Carbon ring seal is than labyrinth seal amount of leakage
It is small, high revolving speed is adapted to, can also reach 500 DEG C using temperature, but leakage rate is still larger.Zero can be achieved substantially and let out for dry gas seals
The advantages that dew, shaft power consumption is small, and stability is strong, but after dielectric gas temperature reaches 280 DEG C or more, the sealing of dry gas seals
Failure easy to aging is enclosed, brings hidden danger for the continuous safe handling of blower.Therefore, can be high in running temperature height, revolving speed, medium is let out
Axle sealing structure used in the working environment of the substantially zeroed requirement of leakage quantity is particularly important.
Summary of the invention
The purpose of the present invention is to provide a kind of compound axle sealing structures of high temperature and high speed；It is taken in order to achieve the above objectives
Technical solution be：
A kind of compound axle sealing structure of high temperature and high speed, including shaft and casing, have the side of medium as inside using casing internal,
With outer for outside outside casing, be successively equipped with from inside to outside between shaft and casing Comb Labyrinth Seals, dry gas seals and
Carbon ring seal is fixed with the thermal insulation board that dry gas seals are transmitted to for high-temperature on the inside of preventing on the inside of Comb Labyrinth Seals,
The thermal insulation board is fixed on the medial surface of Comb Labyrinth Seals by fixing bolt；It is equipped in Comb Labyrinth Seals around circumferential direction
Multiple preposition stomatas for preventing inside high temperature gas medium from revealing by Comb Labyrinth Seals to dry gas seals side, preposition
High pressure gas is connected in stomata；Circulating cooling water route is equipped in dry gas seals periphery.
Preferably, the circulating cooling water route is annular compartment, and first partition and second partition are equipped in annular compartment,
Annular compartment is divided into two arc chambers by the first partition and second partition, around circumferential direction on the left inside wall of arc chambers
Multiple right baffle-plates are uniformly provided with, interval are equipped between the right baffle-plate right end and the right inner wall of arc chambers, in arc chambers
Multiple right shell bodies are uniformly provided with around circumferential on right inner wall, between being equipped between the right shell body left end and the left inside wall of arc chambers
Every, on annular compartment be equipped with inlet and outlet, the water inlet close to first partition be arranged, water outlet close to second every
Plate setting.
Preferably, the thermal insulation board is made of nanometer level microporous thermal insulation board.
Preferably, the Comb Labyrinth Seals are made of wear-resisting, heat-resisting material.
The advantageous effect of present invention is that：（1）By the setting of thermal insulation board 3, prevent the higher temperature in inside to
Transmitting, ensure that the work quality of dry gas seals 8 in dry gas seals 8；（2）By the setting of preposition stomata 4, in preposition stomata 4
High pressure gas prevent inside high temperature gas medium by Comb Labyrinth Seals 5 to 8 side of dry gas seals reveal, be further ensured that
The work qualities of dry gas seals 8；（3）The setting in circulating cooling water route 7, which is met in casing 1, to be down to 200 DEG C from 500 DEG C
Requirement below provides good working environment for the work of entire motor；（4）Comb Labyrinth Seals 5, dry gas seals 8 and carbon
Ring seal 9 threes mutual protective effect while, can also respectively work independently and play respective advantage, such as in dry gas
Under the extreme case of 8 damage of sealing, the carbon ring seal 9 in outside still is able to work independently；（5）Integral installation structure is simple, work
Stability is strong, long service life, realizes the basic zero leakage requirement of medium.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the sectional view of preposition stomata；
Fig. 3 is the sectional view in circulating cooling water route；
Fig. 4 is circulating cooling water route circumferentially deploying figure.
Specific embodiment
The present invention is further described with reference to the accompanying drawing.
As shown in Figures 1 to 4, the compound axle sealing structure of a kind of high temperature and high speed, including shaft 6 and casing 1, with casing 1
The side that there is medium in inside is inside, outer for outside with 1 outside of casing, is successively assembled from inside to outside between shaft 6 and casing 1
There are Comb Labyrinth Seals 5, dry gas seals 8 and carbon ring seal 9, the Comb Labyrinth Seals 5 use wear-resisting, heat-resisting material system
Make, the thermal insulation board 3 for being transmitted to dry gas seals 8 for high-temperature on the inside of preventing is fixed in the inside of Comb Labyrinth Seals 5, it is described
Thermal insulation board 3 is fixed on the medial surface of Comb Labyrinth Seals 5 by fixing bolt 2, the thermal insulation board 3 using it is nanometer level microporous every
Hot plate is made；Pass through comb teeth labyrinth for high temperature gas medium on the inside of preventing equipped with multiple in Comb Labyrinth Seals 5 around circumferential direction
The preposition stomata 4 that sealing 5 is revealed to 8 side of dry gas seals, is connected with high pressure gas in preposition stomata 4；It is set in 8 periphery of dry gas seals
There is circulating cooling water route 7.
The circulating cooling water route 7 is annular compartment, and first partition 12 and second partition 15, institute are equipped in annular compartment
State first partition 12 and second partition 15 and annular compartment be divided into two arc chambers, on the left inside wall 17 of arc chambers around
Multiple right baffle-plates 16 circumferentially are uniformly provided with, interval is equipped between 16 right end of right baffle-plate and the right inner wall 19 of arc chambers,
Multiple right shell bodies 18, a left side for right shell body 18 left end and arc chambers are uniformly provided with around circumferential on the right inner wall 19 of arc chambers
Between inner wall 17 be equipped with interval, on annular compartment be equipped with water inlet 13 and water outlet 14, the water inlet 13 close to first every
Plate 12 is arranged, and water outlet 14 is arranged close to second partition 15.
The present invention is connected with high-pressure air source into preposition stomata 4 at work, by external high pressure gas source to prevent inside high
Warm gas medium is revealed by Comb Labyrinth Seals 5 to 8 side of dry gas seals；Sealing air inlet of the high-pressure air source to dry gas seals 8
Operating air pressure is passed through in 10, after reaching steady operation, high pressure gas is released from the sealing bleeder port 11 of dry gas seals 8；It is recycling
The cooling water of flowing is passed through in cooling water channel 7 to guarantee that 1 inner wall temperature of casing is no more than 200 DEG C, while can also be in casing 1
Interior mounting temperature sensor is adjusted to suitable whole temperature to detect 1 internal temperature of casing in time.
It compares with existing axle sealing structure, the invention has the advantages that：（1）By the setting of thermal insulation board 3, prevent
The higher temperature in inside is transmitted into dry gas seals 8, ensure that the work quality of dry gas seals 8；（2）Pass through preposition stomata 4
Setting, the high pressure gas in preposition stomata 4 prevents inside high temperature gas medium by Comb Labyrinth Seals 5 to dry gas seals
The leakage of 8 sides, further ensures the work quality of dry gas seals 8；（3）The setting in circulating cooling water route 7 meets energy in casing 1
It is enough that 200 DEG C of requirements below are down to from 500 DEG C, good working environment is provided for the work of entire motor；（4）Comb teeth labyrinth is close
Envelope 5, dry gas seals 8 and 9 three of carbon ring seal mutual protective effect while, can also respectively work independently and play respectively
Advantage, such as dry gas seals 8 damage extreme case under, the carbon ring seal 9 in outside still is able to work independently；（5）It is whole
Mounting structure is simple, and job stability is strong, long service life, realizes the basic zero leakage requirement of medium.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that：It still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
But these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (4)
1. a kind of compound axle sealing structure of high temperature and high speed, including shaft and casing, are interior with the side that casing internal has medium
Side, with outer for outside outside casing, which is characterized in that it is close to be successively equipped with comb teeth labyrinth from inside to outside between shaft and casing
Envelope, dry gas seals and carbon ring seal are fixed on the inside of Comb Labyrinth Seals and are transmitted to dry gas for high-temperature on the inside of preventing
The thermal insulation board of sealing, the thermal insulation board are fixed on the medial surface of Comb Labyrinth Seals by fixing bolt；Around circumferential direction in comb teeth
Labyrinth seal is equipped with multiple for preventing inside high temperature gas medium from revealing by Comb Labyrinth Seals to dry gas seals side
Preposition stomata is connected with high pressure gas in preposition stomata；Circulating cooling water route is equipped in dry gas seals periphery.
2. the compound axle sealing structure of high temperature and high speed according to claim 1, which is characterized in that the circulating cooling water route
For annular compartment, it is equipped with first partition and second partition in annular compartment, the first partition and second partition are by annular chamber
Room is divided into two arc chambers, is uniformly provided with multiple right baffle-plates, the right baffle-plate around circumferential on the left inside wall of arc chambers
It is equipped with interval between right end and the right inner wall of arc chambers, is uniformly provided with multiple right gears around circumferential on the right inner wall of arc chambers
Plate is equipped with interval between the right shell body left end and the left inside wall of arc chambers, water inlet and water outlet are equipped on annular compartment
Mouthful, the water inlet is arranged close to first partition, and water outlet is arranged close to second partition.
3. the compound axle sealing structure of high temperature and high speed according to claim 2, which is characterized in that the thermal insulation board is used and received
Meter level micropore thermal insulation board is made.
4. the compound axle sealing structure of high temperature and high speed according to claim 3, which is characterized in that the Comb Labyrinth Seals
It is made of wear-resisting, heat-resisting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106773.2A CN108895163A (en) | 2018-09-21 | 2018-09-21 | A kind of compound axle sealing structure of high temperature and high speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811106773.2A CN108895163A (en) | 2018-09-21 | 2018-09-21 | A kind of compound axle sealing structure of high temperature and high speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108895163A true CN108895163A (en) | 2018-11-27 |
Family
ID=64360059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811106773.2A Pending CN108895163A (en) | 2018-09-21 | 2018-09-21 | A kind of compound axle sealing structure of high temperature and high speed |
Country Status (1)
| Country | Link |
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| CN (1) | CN108895163A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127959A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide turbine cylinder shaft seal cooling structure |
Citations (10)
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|---|---|---|---|---|
| EP0701074A1 (en) * | 1994-09-08 | 1996-03-13 | Kaydon Corporation | Seal assembly with secondary seal |
| CN2662012Y (en) * | 2003-12-19 | 2004-12-08 | 谭迥然 | Mechanical seal cooling case |
| CN201902332U (en) * | 2010-11-30 | 2011-07-20 | 成都一通密封有限公司 | Dry gas sealing device for turbo compressor |
| CN102278475A (en) * | 2011-06-15 | 2011-12-14 | 浙江大学 | Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid |
| CN104197025A (en) * | 2014-08-27 | 2014-12-10 | 上海通用风机股份有限公司 | Combined sealing water cooling bearing seat of large fan |
| US20150226076A1 (en) * | 2011-09-07 | 2015-08-13 | Nuovo Pignone S.P.A. | Seal for a rotary machine |
| CN106762801A (en) * | 2016-12-29 | 2017-05-31 | 宜都兴发化工有限公司 | A kind of axial-flow pump dry gas sealing system |
| CN207454377U (en) * | 2017-08-24 | 2018-06-05 | 武汉西北风机发展有限公司 | For the combined sealing structure of air blower for coal gas to converter exhaust end |
| CN108138794A (en) * | 2015-07-30 | 2018-06-08 | 诺沃皮尼奥内技术股份有限公司 | Dry gas seals part cooling arrangement and method |
| CN208719362U (en) * | 2018-09-21 | 2019-04-09 | 卧龙电气南阳防爆集团股份有限公司 | A kind of compound axle sealing structure of high temperature and high speed |
-
2018
- 2018-09-21 CN CN201811106773.2A patent/CN108895163A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0701074A1 (en) * | 1994-09-08 | 1996-03-13 | Kaydon Corporation | Seal assembly with secondary seal |
| CN2662012Y (en) * | 2003-12-19 | 2004-12-08 | 谭迥然 | Mechanical seal cooling case |
| CN201902332U (en) * | 2010-11-30 | 2011-07-20 | 成都一通密封有限公司 | Dry gas sealing device for turbo compressor |
| CN102278475A (en) * | 2011-06-15 | 2011-12-14 | 浙江大学 | Dynamic sealing structure for reciprocating movement shaft between high temperature gas and high temperature liquid |
| US20150226076A1 (en) * | 2011-09-07 | 2015-08-13 | Nuovo Pignone S.P.A. | Seal for a rotary machine |
| CN104197025A (en) * | 2014-08-27 | 2014-12-10 | 上海通用风机股份有限公司 | Combined sealing water cooling bearing seat of large fan |
| CN108138794A (en) * | 2015-07-30 | 2018-06-08 | 诺沃皮尼奥内技术股份有限公司 | Dry gas seals part cooling arrangement and method |
| CN106762801A (en) * | 2016-12-29 | 2017-05-31 | 宜都兴发化工有限公司 | A kind of axial-flow pump dry gas sealing system |
| CN207454377U (en) * | 2017-08-24 | 2018-06-05 | 武汉西北风机发展有限公司 | For the combined sealing structure of air blower for coal gas to converter exhaust end |
| CN208719362U (en) * | 2018-09-21 | 2019-04-09 | 卧龙电气南阳防爆集团股份有限公司 | A kind of compound axle sealing structure of high temperature and high speed |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127959A (en) * | 2020-09-24 | 2020-12-25 | 北京前沿动力科技股份有限公司 | Supercritical carbon dioxide turbine cylinder shaft seal cooling structure |
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