CN202381702U - Labyrinth seal - Google Patents
Labyrinth seal Download PDFInfo
- Publication number
- CN202381702U CN202381702U CN2011204079230U CN201120407923U CN202381702U CN 202381702 U CN202381702 U CN 202381702U CN 2011204079230 U CN2011204079230 U CN 2011204079230U CN 201120407923 U CN201120407923 U CN 201120407923U CN 202381702 U CN202381702 U CN 202381702U
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- China
- Prior art keywords
- seal
- gear piece
- labyrinth seal
- sealing
- sheets
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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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Abstract
The utility model discloses a labyrinth seal, which includes a seal toothed sheet group arranged in a seal casing inner cavity and comprising seal toothed sheets at intervals, fixtures for fixing the seal toothed sheets are arranged between the separated seal toothed sheets, and a clamping part is arranged on at least one end of the seal toothed sheet group. The labyrinth seal has the advantages that the ideal seal effect can be achieved; and except the seal toothed sheets made of aluminum sheets or copper sheets, others are made of common metal, so that the product cost is greatly saved.
Description
Technical field
The utility model relates to a kind of sealing, especially labyrinth seal.
Background technique
Labyrinth seal is as a kind of seal form; Through around rotating shaft, establishing the belt sealing tooth that several are arranged in order; Form a series of gap and expansion cavitys of damming between tooth and the tooth; Sealed medium produces throttle effect (generally as far as possible making the kinetic energy of air-flow be converted into heat energy) when the gap through tortuous labyrinth, and does not make leaving velocity get into next gap and reach the purpose of resistance leakage.Owing to have the gap between the rotating shaft of labyrinth seal and housing; No solid contact; Needn't lubricate, and allow thermal expansion, adapt to the characteristics such as occasion of high temperature, high pressure, high speed-frequency; This seal form be widely used in steam turbine, gas turbine, compressor, blower axle head and the sealing of inter-stage, the preposition sealing of other motive sealing.The sealing effect of labyrinth seal is relevant with its geometrical shape.Generally be that resistance is big when runner length, the urgency of turning round, peak the time, difference pressuring loss is remarkable, and amount of leakage reduces.Therefore seal tooth and will do thinly as far as possible, and the band acute angle, crown thickness should be less than 0.5mm, should keep suitable distance between tooth and the tooth, and space width is generally 5～9mm.
A new technology difficult problem also often appears when making labyrinth seal; Diameter is big or split the split type labyrinth seal and can bending or the good gear piece blank segmentation of punch process be embedded in the narrow groove of reservation annular of seal casinghousing, is refined to required size with seal casinghousing then; But diameter is less and for the labyrinth seal gear piece of integral barrel structure then can't adopt embedding technology, therefore employing aluminium or copper material are whole usually processes.
At present, the labyrinth seal of whole processing has two defectives on the traditional market: the one, because consider gear piece intensity and processing technology, must will seal tooth and be processed into subtriangularly, and the expansion space of so just having reduced tooth and between cog has directly influenced sealing effect; The 2nd, adopt precious metal integer processing, increased component costs greatly.
The model utility content
The technical problem that the utility model will solve provides a kind of labyrinth seal, when guaranteeing sealing effect, can reduce the cost of production of parts again.
The utility model is realized through following technological scheme.
A kind of labyrinth seal has comprised that the metallic sealing sealing gear piece group that gear piece constituted that is provided with is at interval arranged in the seal casinghousing inner chamber, the folder of fixing seal gear piece is set between the adjacent seals gear piece, and at least one end of sealing gear piece group is provided with gripping members.
In the above-mentioned labyrinth seal, this gripping members comprises the gland of being furnished with bolt, and bolt is fixed on gland on the seal casinghousing.
In the above-mentioned labyrinth seal, this folder is preferably pressure ring.
In the above-mentioned labyrinth seal, sealing gear piece group is preferably an end gripping members is set, and the other end is close to the inside place, extension of seal casinghousing.
In the above-mentioned labyrinth seal, this folder place is provided with and dashes, bleeding point.
In the above-mentioned labyrinth seal, the sealing gear piece is aluminum or copper.
The beneficial effect of the utility model: the utility model can either reach desirable sealing effect, and except sealing gear piece employing aluminium flake or copper sheet, all the other are ordinary metallic material, have practiced thrift product cost greatly.
Description of drawings
Fig. 1 is the structural representation of this embodiment labyrinth seal.
Embodiment
According to accompanying drawing and embodiment the utility model is done further explain below.
Fig. 1 is the structural representation of this embodiment labyrinth seal, with reference to Fig. 1, and labyrinth seal; In seal casinghousing 1, sealing gear piece group 2 has been installed, sealing gear piece group 2 is to be made up of the sealing gear piece 21 that is spaced setting successively; Each sealing gear piece 21 is aluminium flake or copper sheet, between adjacent sealing gear piece 21, pressure ring 23 is installed, and an end of sealing gear piece group 2 is close to the inside extension 11 of seal casinghousing 1; The other end is equipped with gland 3; Gland 3 is fixed on the seal casinghousing 1 through bolt 31, and sealing gear piece 21 compresses through gland 3 with pressure ring 23, makes sealing gear piece 21 can circumferential displacement not take place with seal casinghousing 1.Seal casinghousing 1 also is provided with and dashes, bleeding point 13, and its mouthful end is arranged on pressure ring 23 places, can through dash, bleeding point 13 carries out operations such as gas exchange.
The foregoing description only is the technical conceive and the characteristics of explanation the utility model, and its purpose is to let the personage that is familiar with this art can understand the utility model content and also implements, and can not limit the protection domain of the utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed in the protection domain of the utility model.
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Claims (6)
1. labyrinth seal; Comprised the metallic sealing sealing gear piece group that gear piece constituted that is provided with has at interval been arranged in the seal casinghousing inner chamber; It is characterized in that, the folder of fixing seal gear piece is set between the adjacent seals gear piece, at least one end of described sealing gear piece group is provided with gripping members.
2. labyrinth seal according to claim 1 is characterized in that described gripping members comprises the gland of being furnished with bolt, and bolt is fixed on gland on the seal casinghousing.
3. labyrinth seal according to claim 1 is characterized in that, described folder is a pressure ring.
4. labyrinth seal according to claim 1 is characterized in that, described sealing gear piece group one end is provided with gripping members, and the other end is close to the inside place, extension of seal casinghousing.
5. labyrinth seal according to claim 1 is characterized in that, described folder place is provided with and dashes, bleeding point.
6. labyrinth seal according to claim 1 is characterized in that, described sealing gear piece is aluminum or copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204079230U CN202381702U (en) | 2011-10-24 | 2011-10-24 | Labyrinth seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204079230U CN202381702U (en) | 2011-10-24 | 2011-10-24 | Labyrinth seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381702U true CN202381702U (en) | 2012-08-15 |
Family
ID=46630206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204079230U Expired - Fee Related CN202381702U (en) | 2011-10-24 | 2011-10-24 | Labyrinth seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381702U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899569A (en) * | 2012-12-29 | 2014-07-02 | 南通大通宝富风机有限公司 | Labyrinth seal |
| CN105570184A (en) * | 2015-12-23 | 2016-05-11 | 三一环保科技有限公司 | Air seal structure and steam compressor thereof |
-
2011
- 2011-10-24 CN CN2011204079230U patent/CN202381702U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899569A (en) * | 2012-12-29 | 2014-07-02 | 南通大通宝富风机有限公司 | Labyrinth seal |
| CN105570184A (en) * | 2015-12-23 | 2016-05-11 | 三一环保科技有限公司 | Air seal structure and steam compressor thereof |
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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: 20120815 Termination date: 20151024 |
|
| EXPY | Termination of patent right or utility model |