CN205578041U - Honeycomb formula seal assembly - Google Patents
Honeycomb formula seal assembly Download PDFInfo
- Publication number
- CN205578041U CN205578041U CN201620382102.9U CN201620382102U CN205578041U CN 205578041 U CN205578041 U CN 205578041U CN 201620382102 U CN201620382102 U CN 201620382102U CN 205578041 U CN205578041 U CN 205578041U
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- CN
- China
- Prior art keywords
- honeycomb
- rotor
- utility
- model
- vapor seal
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- 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.)
- Expired - Fee Related
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- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model provides a honeycomb formula seal assembly belongs to seal assembly technical field. The utility model discloses a gland casing, vapor seal and rotor, the vapor seal sets up between rotor and gland casing, is equipped with the gland casing groove in the gland casing, and the upper portion of vapor seal is equipped with the circular bead, and the circular bead setting on the vapor seal still includes the honeycomb area at the gland casing inslot, the honeycomb area sets up the lower part of the vapor seal between vapor seal and rotor. The utility model discloses the turbine unit high intermediate pressure cylinder vapor seal has been solved well because produce the problem that permanent wearing and tearing lead to the increase of the steam meson volume of revealing. The utility model discloses a honeycomb sealed be exactly that the internal surface of sealing ring comprises the little honeycomb holes of hexagon of honeycomb shape, when the fluid with the same and rotor revolve to prewhirl speed when getting into sealed chamber, the sealed crude internal surface of damping can effectually reduce fluidic circumference speed in the sealed chamber, suppresses and seals up the fluid excitation, the stability of improvement rotor. The stability that the honeycomb is sealed obviously is better than the broach and seals.
Description
Technical field
This utility model relates to a kind of Honeycomb Steam seal assembly, belongs to black box technical field.
Background technology
Existing gland sealing gear forms multiple annular compartment when steam turbine operation around rotor surface, steam meson is by the throttling in the gap between gland sealing gear and rotor surface, and carry out energy conversion by expansion in the chamber that two adjacent teeth of packing are formed, steam is changed because of the continuous of energy after multiple gland sealing gears, heat energy is converted into the ability of kinetic energy and minimizes, to reaching to block or reduce the purpose that steam meson is revealed.
Because the rotor oscillation that a variety of causes produces makes the gap between packing and rotor increase, the effect of throttling-expansion reduces, and the kinetic energy of steam meson reduces amplitude and reduces, i.e. the amount of leakage of steam meson increases.Gland-packing leakage has had a strong impact on the thermal efficiency of Steam Turbine.
Summary of the invention
The purpose of this utility model is to solve the problem that above-mentioned prior art exists, the rotor oscillation that i.e. a variety of causes produces makes the gap between packing and rotor increase, the effect of throttling-expansion reduces, and the kinetic energy of steam meson reduces amplitude and reduces, i.e. the amount of leakage of steam meson increases.Gland-packing leakage has had a strong impact on the thermal efficiency of Steam Turbine and then provides a kind of Honeycomb Steam seal assembly.
The purpose of this utility model is achieved through the following technical solutions:
A kind of Honeycomb Steam seal assembly, including: labyrinth casing, packing and rotor, described packing is arranged between rotor and labyrinth casing, labyrinth casing groove it is provided with in labyrinth casing, the top of packing is provided with shoulder, shoulder on packing is arranged in labyrinth casing groove, also includes that cellular band, described cellular band are arranged on the bottom of packing.
This utility model solves Steam Turbine high intermediate pressure cylinder packing well because producing the problem that permanent abrasion causes steam meson amount of leakage to increase, and existing packing has been made subversive change.The honeycomb seal that this utility model uses is exactly that the inner surface of sealing ring is made up of the hexagon chalcid fly socket bore of comb shapes, when fluid enters annular seal space with the identical pre-rotation speed with rotor rotation direction, the coarse inner surface of damping seal can effectively reduce the circumferential speed of fluid in annular seal space, suppression seals flow induced vibrations, improves the stability of rotor.The stability of honeycomb seal is significantly better than labyrinth seal.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing black box.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the structural representation of this utility model Honeycomb Steam seal assembly.
Fig. 4 is the structural representation of cellular band 4.
Fig. 5 is the structural representation in hexagonal honeycomb hole 13.
Reference in figure, 1 is labyrinth casing, and 2 is packing, and 3 is rotor, and 4 is cellular band, and 11 is labyrinth casing groove, and 12 is shoulder, and 13 is hexagonal honeycomb hole.In figure, arrow indication is steam flow direction.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail: the present embodiment is implemented under premised on technical solutions of the utility model, gives detailed embodiment, but protection domain of the present utility model is not limited to following embodiment.
As shown in Fig. 3～Fig. 5, a kind of Honeycomb Steam seal assembly involved by the present embodiment, including: labyrinth casing 1, packing 2 and rotor 3, described packing 2 is arranged between rotor 3 and labyrinth casing 1, being provided with labyrinth casing groove 11 in labyrinth casing 1, the top of packing 2 is provided with shoulder 12, and the shoulder 12 on packing 2 is arranged in labyrinth casing groove 11, also include cellular band 4, the bottom of the packing 2 that described cellular band 4 is arranged between packing 2 and rotor 3.
Described cellular band 4 is made up of the hexagonal honeycomb hole 13 of comb shapes, and the height in hexagonal honeycomb hole 13 is 4.5mm, and the distance (internal diameter) between the parallel edges of 13 two, described hexagonal honeycomb hole is 3.2～6.4mm.
Described cellular band 4 is made up of nickel-bass alloy material.
The above; it is only this utility model preferably detailed description of the invention; these detailed description of the invention are all based on the different implementations under this utility model general idea; and protection domain of the present utility model is not limited thereto; any those familiar with the art is in the technical scope that this utility model discloses; the change that can readily occur in or replacement, all should contain within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (3)
1. a Honeycomb Steam seal assembly, including: labyrinth casing (1), packing (2) and rotor (3), described packing (2) is arranged between rotor (3) and labyrinth casing (1), labyrinth casing groove (11) it is provided with in labyrinth casing (1), the top of packing (2) is provided with shoulder (12), shoulder (12) on packing (2) is arranged in labyrinth casing groove (11), it is characterized in that, also include that cellular band (4), described cellular band (4) are arranged on the bottom of packing (2).
Honeycomb Steam seal assembly the most according to claim 1, it is characterized in that, described cellular band (4) is made up of hexagonal honeycomb hole (13), the height in hexagonal honeycomb hole (13) is 4.5mm, and the distance between the parallel edges of (13) two, described hexagonal honeycomb hole is 3.2～6.4mm.
Honeycomb Steam seal assembly the most according to claim 1, it is characterised in that described cellular band (4) is made up of nickel-bass alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620382102.9U CN205578041U (en) | 2016-04-29 | 2016-04-29 | Honeycomb formula seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620382102.9U CN205578041U (en) | 2016-04-29 | 2016-04-29 | Honeycomb formula seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205578041U true CN205578041U (en) | 2016-09-14 |
Family
ID=56859122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620382102.9U Expired - Fee Related CN205578041U (en) | 2016-04-29 | 2016-04-29 | Honeycomb formula seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205578041U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061740A (en) * | 2017-04-26 | 2017-08-18 | 北京航空航天大学 | A kind of face of cylinder carries the mechanical seal structure of honeycomb shape groove |
-
2016
- 2016-04-29 CN CN201620382102.9U patent/CN205578041U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061740A (en) * | 2017-04-26 | 2017-08-18 | 北京航空航天大学 | A kind of face of cylinder carries the mechanical seal structure of honeycomb shape groove |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160914 Termination date: 20190429 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |