CN106321157A - Mechanical air pressure combined sealing structure - Google Patents
Mechanical air pressure combined sealing structure Download PDFInfo
- Publication number
- CN106321157A CN106321157A CN201610988216.2A CN201610988216A CN106321157A CN 106321157 A CN106321157 A CN 106321157A CN 201610988216 A CN201610988216 A CN 201610988216A CN 106321157 A CN106321157 A CN 106321157A
- Authority
- CN
- China
- Prior art keywords
- sealing
- pipeline
- air pressure
- pressure combined
- sealing structure
- 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
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
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
-
- 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
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
- F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
Abstract
The invention discloses a mechanical air pressure combined sealing structure and relates to the technical field of driving devices. The mechanical air pressure combined sealing structure comprises a ventilating flange, a sealing pipeline, a sealing cover and a drive shaft, wherein the sealing cover is arranged on the outer wall of the drive shaft, a comb tooth labyrinth sealing zone is arranged between the drive shaft and the sealing cover, the top end of the sealing cover is connected with one end of the sealing pipeline, and the other end of the sealing pipeline is communicated with the ventilating flange through a pipe. By the adoption of the mechanical air pressure combined sealing structure, a certain initial pressure gas is output to the mechanical air pressure combined sealing structure between the drive shaft and the sealing cover through the ventilating flange and the sealing pipeline, the external pressure for comb tooth labyrinth sealing is increased, leakage amount is decreased, and a sealing effect is improved.
Description
Technical field:
The present invention relates to seal technical field of structures, be specifically related to a kind of ARTMechanical gas pressure combined sealing structure.
Background technology:
Modern engine machine technology has reached high level, will improve turbine efficiency further, be heavily dependent on impeller
Machine rotor and the effect of obturaging of transmission between centers, gas circuit seals and will directly affect engine booster than the raising with turbine efficiency.Fan
Palace labyrinth seal is a kind of common contactless air-tight structure.Labyrinth labyrinth seal is the multi-level throttle effect by tooth,
Internal vapour (gas) body produces axial pressure drop, and then reduces vapour (gas) body External leakage vertically.By sealing reasonable in design
Gap and comb number so that internal vapour (gas) body force value after throttling, less than external pressure, reaches certain sealing effect
Really.But worrying sound friction problem during owing to installing, actual radial clearance is often near the high limit of design, inside and outside vapour (gas) body
Axially pressure drop falls flat, and causes leakage rate to increase, and its sealing effectiveness is poor.Therefore, improvement labyrinth comb is needed badly close
Seal structure, improves effect of obturaging.
Summary of the invention:
It is an object of the invention to provide a kind of ARTMechanical gas pressure combined sealing structure, labyrinth labyrinth seal effect can be improved.
The technical solution used in the present invention is: a kind of ARTMechanical gas pressure combined sealing structure, including ventilation flange, seals pipe
Road, sealing lid and power transmission shaft, transmission shafts outer wall is provided with between sealing lid, power transmission shaft and sealing are covered and is provided with Comb Labyrinth Seals
District, seals caping end and connects the one end sealing pipeline, seals the pipeline other end and is connected with ventilation flange by pipeline.
The invention has the beneficial effects as follows: this ARTMechanical gas pressure combined sealing structure, certain initial pressure gas is via ventilation
Flange, sealing pipeline output to power transmission shaft and sealing Gai Jian Comb Labyrinth Seals district, improve the external pressure in labyrinth seal district, subtract
Few leakage rate, improves sealing effectiveness.
Accompanying drawing illustrates:
Fig. 1 is present configuration schematic diagram；
Fig. 2 is Local map of the present invention.
Detailed description of the invention:
With reference to each figure, a kind of ARTMechanical gas pressure combined sealing structure, including ventilation flange 4, seal pipeline 3, sealing lid 2 and power transmission shaft
1, power transmission shaft 1 axle outer wall is provided with sealing lid 2, is provided with Comb Labyrinth Seals district between power transmission shaft 1 and sealing lid 2, seals lid 2 tops
Connect the one end sealing pipeline 3, seal pipeline 3 other end and connected with ventilation flange 4 by pipeline.
This ARTMechanical gas pressure combined sealing structure, including power transmission shaft 1(rotating ring), seal lid 2(stationary ring), seal pipeline 3 and logical
Gas flange 4.There is internal vapour (gas) body of turbomachine of certain pressure, on the one hand by the fan between power transmission shaft 1 and sealing lid 2
The multi-level throttle effect in labyrinth seal district, palace, internal vapour (gas) body creates axial pressure drop, reduces the leakage of vapour (gas) body, the opposing party
In the face of ventilation flange 4 inputs the gas of certain pressure, export to Comb Labyrinth Seals district by sealing pipeline 3, improve comb fan
The external pressure of seal area, palace, reduces further and internal reduces vapour (gas) body leakage rate, improves comb and obturages effect.
The principle of this ARTMechanical gas pressure combined sealing structure is to provide to labyrinth comb tooth sealing structure vapour (gas) body output part
Normal pressure, improves and seals structural outer pressure, reduce vapour (gas) body further in axial direction to External leakage.
In sum, this ARTMechanical gas pressure combined sealing structure, certain initial pressure gas is via ventilation flange 4 and seals
Pipeline 3 exports to power transmission shaft 1 and seals Comb Labyrinth Seals district between lid 2, improves the external pressure in labyrinth seal district, reduces leakage
Amount, improves sealing effectiveness.
Claims (1)
1. an ARTMechanical gas pressure combined sealing structure, including ventilation flange (4), seals pipeline (3), sealing lid (2) and power transmission shaft
(1), it is characterised in that: power transmission shaft (1) axle outer wall is provided with sealing lid (2), is provided with comb between power transmission shaft (1) and sealing lid (2)
Labyrinth seal district, seals lid (2) top and connects the one end sealing pipeline (3), seal pipeline (3) other end by pipeline and ventilation
Flange (4) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610988216.2A CN106321157A (en) | 2016-11-10 | 2016-11-10 | Mechanical air pressure combined sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610988216.2A CN106321157A (en) | 2016-11-10 | 2016-11-10 | Mechanical air pressure combined sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106321157A true CN106321157A (en) | 2017-01-11 |
Family
ID=57816385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610988216.2A Pending CN106321157A (en) | 2016-11-10 | 2016-11-10 | Mechanical air pressure combined sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106321157A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505773A (en) * | 2018-12-28 | 2019-03-22 | 中国船舶重工集团公司第七0三研究所 | A kind of helium low-pressure compressor integral seal structure |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472107A (en) * | 1982-08-03 | 1984-09-18 | Union Carbide Corporation | Rotary fluid handling machine having reduced fluid leakage |
| CN1878931A (en) * | 2003-09-12 | 2006-12-13 | 麦斯国际有限公司 | Sealing arrangement in a compressor |
| JP2010156204A (en) * | 2008-12-26 | 2010-07-15 | Hitachi Ltd | Radial flow fluid machine |
| JP2015124753A (en) * | 2013-12-27 | 2015-07-06 | 三菱日立パワーシステムズ株式会社 | Steam turbine |
-
2016
- 2016-11-10 CN CN201610988216.2A patent/CN106321157A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4472107A (en) * | 1982-08-03 | 1984-09-18 | Union Carbide Corporation | Rotary fluid handling machine having reduced fluid leakage |
| CN1878931A (en) * | 2003-09-12 | 2006-12-13 | 麦斯国际有限公司 | Sealing arrangement in a compressor |
| JP2010156204A (en) * | 2008-12-26 | 2010-07-15 | Hitachi Ltd | Radial flow fluid machine |
| JP2015124753A (en) * | 2013-12-27 | 2015-07-06 | 三菱日立パワーシステムズ株式会社 | Steam turbine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109505773A (en) * | 2018-12-28 | 2019-03-22 | 中国船舶重工集团公司第七0三研究所 | A kind of helium low-pressure compressor integral seal structure |
| CN109505773B (en) * | 2018-12-28 | 2023-09-08 | 中国船舶重工集团公司第七0三研究所 | Helium low-pressure compressor integral sealing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |
|
| RJ01 | Rejection of invention patent application after publication |