CN110332316A - A kind of labyrinth seal structure - Google Patents
A kind of labyrinth seal structure Download PDFInfo
- Publication number
- CN110332316A CN110332316A CN201910622618.4A CN201910622618A CN110332316A CN 110332316 A CN110332316 A CN 110332316A CN 201910622618 A CN201910622618 A CN 201910622618A CN 110332316 A CN110332316 A CN 110332316A
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- CN
- China
- Prior art keywords
- labyrinth seal
- seal structure
- parts
- face
- hole
- 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.)
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Classifications
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- 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
- F16J15/4476—Labyrinth packings with radial path
Abstract
The invention belongs to technical field of mechanical design, in particular to a kind of labyrinth seal structure.The present invention uses the labyrinth seal structure of right-angled trapezium flute profile, totally it is set as left and right two parts labyrinth seal structure, 15 comb teeth are set on seal, divide 2 groups, there are annular space (1) between 2 groups, it is along the circumferential direction evenly distributed with several radial through-hole herein, blanket gas is passed through from there flows to left and right two parts labyrinth seal structure respectively；The sealing structure has the advantages that structure is simple, be easily worked and assembly method is simple to operation, sealing effect is safe and reliable, and assembling than conventional seals mode allows dimensional space range big, therefore it can not be limited by the size at rotor assembly maximum gauge compared with traditional sealing structure, and without dismantling the rotor after dynamic balancing, the assembly of sealing structure and seal request under special occasions can satisfy.
Description
Technical field
The invention belongs to technical field of mechanical design, in particular to a kind of labyrinth seal structure.
Background technique
Labyrinth seal is that several ring packing teeths being arranged successively are set around shaft, is formed between tooth and tooth a series of
Shut off gap and expansion cavity, and sealed medium generates the mesh that throttle effect reaches Drain Resistance in the gap by tortuous labyrinth
's.Suitable for the air seal under the conditions of high temperature, high pressure, high revolving speed, large scale.It is general in traditional labyrinth seal structure
It can only be penetrated from one end of axis, the diameter dimension of sealing element is by axis maximum gauge all over for whole ring structure in assembly
The limitation of size；And to guarantee sealing effect, need to regularly replace seal member, monolithic construction is not easy to be torn open
Dress；Under special circumstances, rotor shaft end diameter is greater than the rotor after seal member diameter or dynamic balancing not easy to disassemble, traditional
Integral seal structure not can be carried out assembly, need to design a kind of labyrinth seal structure and be wanted with the assembly and sealing that meet product or mechanism
It asks.
Summary of the invention
The purpose of the present invention: according to traditional labyrinth seal structure design method, inventing one kind can be in certain particular field
It closes, as rotor shaft end diameter is greater than seal member diameter, or after needing to regularly replace seal member or dynamic balancing not easy to disassemble
The sealing structure used when rotor, to meet assembly and the seal request of product or mechanism.
Technical solution of the present invention: a kind of labyrinth seal structure, which is characterized in that sealing structure is generally left and right two parts
15 comb teeth are arranged in labyrinth seal structure on every part labyrinth seal structure, and there are annular space 1, annulars between dividing 2 groups, 2 groups
Along the circumferential direction along the circumferential direction coherent annular groove 3 is arranged in uniformly distributed several radial through-hole, end face 2 in space 1, close to upper surface
Several radial holes are arranged on the outer circumference surface of 2 comb teeth to communicate with annular groove 3, left and right two parts labyrinth seal structure passes through fixation
Part is fixed together.
The labyrinth seal structure integrally uses the labyrinth seal structure of right-angled trapezium flute profile.
Left and right two parts labyrinth seal structure is equipped with binding face 5.
L-shaped groove 4 at two are set on the left-half labyrinth seal structure.
Circular hole is arranged on the face parallel with binding face 5 in the L-shaped groove 4.
The hole that the fixing piece passes through circular hole and corresponding right half labyrinth seal structure binding face 5 in L-shaped groove 4 will
Left and right two parts labyrinth seal structure is fixed.
Technological location hole 6 at two are correspondingly arranged at left and right two parts labyrinth seal structure binding face 5.
The annular groove 3 is inside skewed slot.
When left and right two parts labyrinth seal structure needs to combine, two-part faying face 5 is smeared into sealant.
The labyrinth seal structure process when first process two basic change face 5, by technological location hole 6 position post-processing its
Remaining size.
The invention has the advantages that: the present invention to devise a kind of novel labyrinth seal structure, which has knot
Structure is simple, is easily worked and assembly method is simple to operation, sealing effect is safe and reliable advantage, and than conventional seals mode
Assembly allows dimensional space range big, therefore can not be by the size at rotor assembly maximum gauge compared with traditional sealing structure
Limitation, and without dismantling the rotor after dynamic balancing, it can satisfy the assembly of sealing structure and seal request under special occasions.
Detailed description of the invention
The main view and B direction view that Fig. 1 is labyrinth seal structure A direction view of the invention, is separated by a distance.
Fig. 2 is labyrinth seal structure sub-assembly schematic diagram of the invention.
Fig. 3 is labyrinth seal structure assembling schematic diagram of the invention.
Specific embodiment
A kind of labyrinth seal structure is totally set as left and right two parts fan using the labyrinth seal structure of right-angled trapezium flute profile
15 comb teeth are arranged in palace sealing structure on seal, and there are annular spaces 1 between dividing 2 groups, 2 groups, along the circumferential direction uniformly distributed herein
Several radial through-hole, sealing gas is passed through from there flows to the left and right two parts labyrinth seal structure in two sides respectively；End face 2 is arranged
Along the circumferential direction coherent annular groove 3, annular groove 3 are inside skewed slot, are arranged on the outer circumference surface close to 2 comb tooth of upper surface
Several radial holes are communicated with annular groove 3, and sealing gas flows out from there；L-shaped groove 4 at left side flange setting two, in L-shaped groove 4
Circular hole is set on the face parallel with left and right point of half structure binding face 5, left and right two halves are fixed together by fixing piece by circular hole,
Technological location hole 6 at two are provided at left and right two halves binding face, technique pin is connected and fixed, and guarantees processed cylindrical surface
Alignment；Left and right two halves are by the circular hole in half L-shaped groove 4, the other half threaded hole being equipped with, by screw by it is left and right it is left,
Right two parts are fixed together.
As shown in Figure 1,15 comb teeth are arranged using the labyrinth seal structure of right-angled trapezium flute profile, divide 2 groups；It is first when processing
Two basic change face 5 is processed, technique pin is manufactured by technological location hole 6, positions remaining size of post-processing；Fig. 2 is labyrinth seal
Structural assemblies schematic diagram applies left and right two parts labyrinth seal structure faying face 5 when labyrinth seal structure needs to combine
Sealant is smeared, and smearing after plane compresses does not overflow sealant, then left and right two parts labyrinth seal structure is twisted with screw
Tightly, become overall structure；Fig. 3 is labyrinth seal structure assembling schematic diagram, prevents from influencing according to the rotor 8 after Fig. 3 dynamic balancing dynamic
Balance quality cannot dismantle the rotor 8, but the diameter of two axial ends is all larger than the internal diameter of sealing element, first assemble wherein one
Half labyrinth seal structure, then the other half labyrinth seal structure is packed into, with screw-driving, it is finally completed the dress of labyrinth seal structure
Match.
Claims (10)
1. a kind of labyrinth seal structure, which is characterized in that sealing structure is generally left and right two parts labyrinth seal structure, every
15 comb teeth are set on the labyrinth seal structure of part, and there are annular space (1) between dividing 2 groups, 2 groups, annular space (1) is circumferentially square
To uniformly several radial through-hole, the along the circumferential direction coherent annular groove (3) of end face (2) setting, close to upper surface (2) comb tooth
Several radial holes are arranged on outer circumference surface to communicate with annular groove (3), left and right two parts labyrinth seal structure is fixed by fixing piece
Together.
2. labyrinth seal structure as described in claim 1, which is characterized in that the labyrinth seal structure integrally uses right angle terraced
The labyrinth seal structure of shape flute profile.
3. labyrinth seal structure as described in claim 1, which is characterized in that left and right two parts labyrinth seal structure is equal
Equipped with binding face (5).
4. labyrinth seal structure as described in claim 1, which is characterized in that be arranged on the left-half labyrinth seal structure
L-shaped groove (4) at two.
5. labyrinth seal structure as claimed in claim 4, which is characterized in that the L-shaped groove (4) is parallel with binding face (5)
Circular hole is set on face.
6. labyrinth seal structure as described in claim 1, which is characterized in that the fixing piece passes through the circular hole on L-shaped groove (4)
And left and right two parts labyrinth seal structure is fixed in the hole of corresponding right half labyrinth seal structure binding face (5).
7. labyrinth seal structure as described in claim 1, which is characterized in that left and right two parts labyrinth seal structure patch
Technological location hole at two (6) are correspondingly arranged at conjunction face (5).
8. labyrinth seal structure as described in claim 1, which is characterized in that the annular groove (3) is inside skewed slot.
9. labyrinth seal structure as described in claim 1, which is characterized in that left and right two parts labyrinth seal structure needs
When combining, two-part faying face (5) are smeared into sealant.
10. labyrinth seal structure as described in claim 1, which is characterized in that the labyrinth seal structure is first processed when processing
Two basic change face (5) positions remaining size of post-processing by technological location hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622618.4A CN110332316B (en) | 2019-07-09 | 2019-07-09 | Labyrinth seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622618.4A CN110332316B (en) | 2019-07-09 | 2019-07-09 | Labyrinth seal structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110332316A true CN110332316A (en) | 2019-10-15 |
| CN110332316B CN110332316B (en) | 2021-02-12 |
Family
ID=68146118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910622618.4A Active CN110332316B (en) | 2019-07-09 | 2019-07-09 | Labyrinth seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110332316B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088272A1 (en) * | 2020-10-26 | 2022-05-05 | 常熟理工学院 | Sealing device for variable-working-condition gas-liquid two-phase fluid medium |
| US11692628B2 (en) | 2020-10-26 | 2023-07-04 | Changshu Institute Of Technology | Sealing device for gas-liquid two-phase fluid medium under variable working conditions |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1270905B (en) * | 1960-03-01 | 1968-06-20 | Cem Comp Electro Mec | Shaft seal |
| US6502823B1 (en) * | 2001-12-07 | 2003-01-07 | General Electric Company | Actuating seal carrier for a turbine and method of retrofitting |
| CN201561126U (en) * | 2009-11-23 | 2010-08-25 | 哈尔滨锅炉厂预热器有限责任公司 | Barrel labyrinth type airtight seal structure |
| CN202118263U (en) * | 2011-06-22 | 2012-01-18 | 湖北省风机厂有限公司 | Graphite nitrogen sealing device of gas pressuring machine |
| CN204493726U (en) * | 2014-12-26 | 2015-07-22 | 马钢(集团)控股有限公司 | A kind of gas compressor air seal set |
| CN106286838A (en) * | 2015-05-26 | 2017-01-04 | 新特能源股份有限公司 | A kind of agitator tank stuffing seal |
| CN205877186U (en) * | 2016-07-05 | 2017-01-11 | 湖北省风机厂有限公司 | High -speed MVR vapor compressor sealing device of single -stage |
| CN205876788U (en) * | 2016-07-27 | 2017-01-11 | 江苏金通灵流体机械科技股份有限公司 | Atmoseal device for vapor compressor |
| CN206092963U (en) * | 2016-10-19 | 2017-04-12 | 邢德君 | Subdivision composite seal |
-
2019
- 2019-07-09 CN CN201910622618.4A patent/CN110332316B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1270905B (en) * | 1960-03-01 | 1968-06-20 | Cem Comp Electro Mec | Shaft seal |
| US6502823B1 (en) * | 2001-12-07 | 2003-01-07 | General Electric Company | Actuating seal carrier for a turbine and method of retrofitting |
| CN201561126U (en) * | 2009-11-23 | 2010-08-25 | 哈尔滨锅炉厂预热器有限责任公司 | Barrel labyrinth type airtight seal structure |
| CN202118263U (en) * | 2011-06-22 | 2012-01-18 | 湖北省风机厂有限公司 | Graphite nitrogen sealing device of gas pressuring machine |
| CN204493726U (en) * | 2014-12-26 | 2015-07-22 | 马钢(集团)控股有限公司 | A kind of gas compressor air seal set |
| CN106286838A (en) * | 2015-05-26 | 2017-01-04 | 新特能源股份有限公司 | A kind of agitator tank stuffing seal |
| CN205877186U (en) * | 2016-07-05 | 2017-01-11 | 湖北省风机厂有限公司 | High -speed MVR vapor compressor sealing device of single -stage |
| CN205876788U (en) * | 2016-07-27 | 2017-01-11 | 江苏金通灵流体机械科技股份有限公司 | Atmoseal device for vapor compressor |
| CN206092963U (en) * | 2016-10-19 | 2017-04-12 | 邢德君 | Subdivision composite seal |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022088272A1 (en) * | 2020-10-26 | 2022-05-05 | 常熟理工学院 | Sealing device for variable-working-condition gas-liquid two-phase fluid medium |
| US11692628B2 (en) | 2020-10-26 | 2023-07-04 | Changshu Institute Of Technology | Sealing device for gas-liquid two-phase fluid medium under variable working conditions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110332316B (en) | 2021-02-12 |
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