CN102966589B - Labyrinth sealing structure and mounting method thereof - Google Patents
Labyrinth sealing structure and mounting method thereof Download PDFInfo
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- CN102966589B CN102966589B CN201210432617.1A CN201210432617A CN102966589B CN 102966589 B CN102966589 B CN 102966589B CN 201210432617 A CN201210432617 A CN 201210432617A CN 102966589 B CN102966589 B CN 102966589B
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Abstract
The invention discloses a zigzag tooth labyrinth sealing structure and a mounting method thereof and belongs to the technical field of sealing devices. The labyrinth sealing structure comprises a seal mounting hole and a shaft, wherein the seal mounting hole is internally provided with a sealing body; the sealing body and the shaft form a labyrinth seal; the seal mounting hole is provided with a horizontal guide slot and an annular limiting slot; the horizontal guide slot and the annular limiting slot are communicated; the sealing body comprises an upper sealing body and a lower sealing body; the outer side of the sealing body is provided with a guide key; the upper sealing body and the lower sealing body respectively slide into the annular limiting slot along the horizontal guide slot by virtue of the guide keys so as to form cylindrical seal teeth in a matching manner; and the cylindrical sealing teeth and the sealing teeth on the shaft form a zigzag tooth labyrinth seal. The sealing body and the shaft form the zigzag tooth labyrinth seal, so that the problem that the mounting space is limited can be solved; the zigzag tooth labyrinth seal also has a better sealing effect; and furthermore, the zigzag tooth labyrinth seal is simple in structure and convenient and easy to maintain.
Description
Technical field
The present invention relates to seal arrangement technical field, particularly a kind of zigzag tooth labyrinth seal structure and installation method.
Background technique
Seal arrangement can be divided into air exhausting type, mazy type, floating ring formula, mechanical type and 5 kinds of forms such as spiral according to structural feature, generally poisonous, flammable explosive gas, the seal arrangement such as floating ring formula, mechanical type, spiral and air exhausting type should be selected, if gas is nontoxic, harmless, boosting is lower, then labyrinth-type excluder can be selected.
Current centrifugal compressor generally adopts smooth type labyrinth seal as seal arrangement, but this labyrinth seal for mounting type and installing space all restricted, and sealing effect can not reach best, also the corresponding shaft design of filter core compressor is made troubles simultaneously.
Summary of the invention
In order to solve current centrifugal compressor adopt smooth type labyrinth seal for mounting type and installing space all restricted, and sealing effect can not reach best and the problem that can make troubles to the design of the corresponding shaft of filter core compressor, now provides a kind of labyrinth seal structure and installation method.Concrete technological scheme is as follows:
A kind of labyrinth seal structure, comprise sealing mounting hole and axle, seal is provided with in described sealing mounting hole, described seal and the labyrinth seal of described axle composition, wherein, described sealing mounting hole is provided with horizontal guide slot and annular spacing groove, described horizontal guide slot is communicated with annular spacing groove, described seal comprises seal and lower seal, feather key is provided with outside described seal, described upper seal and described lower seal slip into cooperation in described annular spacing groove by described feather key along horizontal guide slot respectively and form cylindric sealing tooth, sealing tooth on described cylindric sealing tooth and described axle forms zigzag tooth labyrinth seal.
Preferably, described sealing mounting hole is made up of upper and lower, the center of circle, cross section, described top O
1with described lower section center of circle O
2between have certain distance D.
Preferably, described feather key lays respectively at described upper seal and described lower seal one end away from mounting flange face, and each side has one.
Preferably, described horizontal guide slot has two, is positioned at described sealing mounting hole top, and is positioned at center of circle O
1horizontal plane on.
Preferably, described annular spacing groove and described sealing mounting hole bottom coaxial line.
Preferably, described upper seal, described lower seal and described sealing mounting hole bottom three have identical axis.
Preferably, described distance D is greater than the height described axle sealing tooth.
A kind of labyrinth sealing installation method, has the labyrinth seal structure described in above-mentioned any one, and comprises the following steps,
Under feather key on lower seal moves along horizontally-guided slot fit, lower seal is moved horizontally to the flanged surface of lower seal and contacts with the fastening flange face on gear-box, and now, lower seal feather key is arranged in annular spacing groove;
Rotate lower seal, the horizonally split face of lower seal is horizontal;
Under feather key on upper seal moves along horizontally-guided slot fit, upper seal is moved horizontally to the flanged surface of seal and contacts with the fastening flange face on gear-box, and now, upper seal feather key is arranged in annular spacing groove;
The cooperation of upper-lower seal body is combined into cylindric sealing tooth, forms zigzag tooth labyrinth seal with the sealing tooth on axle.
Compared with prior art, the labyrinth seal structure that provides of technique scheme and installation method have the following advantages: in centrifugal compressor, can solve mounting type and the limited problem of installing space by seal and axle composition zigzag tooth labyrinth seal; Meanwhile, zigzag tooth labyrinth seal has better sealing effect; In addition, the length being provided with the corresponding shaft of zigzag tooth labyrinth seal is shorter than the length of the corresponding shaft being provided with smooth type labyrinth seal, and rotor dynamics better designs, and structure is simple, easily easy to maintenance.
Accompanying drawing explanation
In order to be illustrated more clearly in the technological scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the labyrinth seal structure mounting structure schematic diagram provided in the embodiment of the present invention;
Fig. 2 is the sealing structure of mounting hole schematic diagram provided in the embodiment of the present invention;
Fig. 3 is the sealing structure of mounting hole schematic diagram provided in the embodiment of the present invention;
Fig. 4 is the lower seal mounting structure schematic diagram provided in the embodiment of the present invention;
Fig. 5 is the lower seal installation structural representation provided in the embodiment of the present invention;
Fig. 6 is the upper seal mounting structure schematic diagram provided in the embodiment of the present invention;
Fig. 7 is that the labyrinth seal structure provided in the embodiment of the present invention installs vertical sectional view.
In accompanying drawing, the component list representated by each label is as follows:
1 gear-box, 2 sealing mounting holes, 3 horizontal guide slots, 4 annular spacing grooves, 5 sealing fastening flange faces, 6 axles, 7 bearings, oil sealing under 8-1, the upper oil sealing of 8-2,9 pull bars, 10 seals, 10-1 lower seal, the upper seal of 10-2,11 impellers, 12 rectangle feather keys.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
As Fig. 1, shown in Fig. 2 and Fig. 3, embodiments provide a kind of labyrinth seal structure, comprise and be positioned at sealing mounting hole 2 on gear-box 1 and axle 6, be provided with seal 10 in sealing mounting hole 2, seal 10 and axle 6 form labyrinth seal, have upper oil sealing 8-2 and lower oil sealing 8-1 outside axle 6, be connected with pull bar 9 between axle 6 and impeller 11, bearing 7 is installed outside axle 6.Sealing mounting hole 2 is made up of upper and lower, cross section, top center of circle O
1with lower section center of circle O
2between have certain distance D.Sealing mounting hole 2 is provided with horizontal guide slot 3 and annular spacing groove 4, and horizontal guide slot 3 is communicated with annular spacing groove 4, and wherein two horizontal guide slots 3 are positioned at sealing mounting hole 2 top, and are positioned at center of circle O
1horizontal plane on.Annular spacing groove 4 and sealing mounting hole 2 bottom coaxial line.Seal 10 comprises seal 10-2 and lower seal 10-1, sealing 10 external sides be provided with feather key 12, namely go up seal 10-2 and lower seal 10-1 away from mounting flange face one end each side have a rectangle feather key 12.Upper seal 10-2 and lower seal 10-1 is slipped in annular spacing groove 4 to coordinate along horizontal guide slot 3 by rectangle feather key 12 respectively and forms cylindric sealing tooth, and the sealing tooth on cylindric sealing tooth and axle 6 forms zigzag tooth labyrinth seal.Upper seal 10-2, lower seal 10-1 and sealing mounting hole 2 bottom three have identical axis.
The sealing center of circle, cross section, mounting hole 2 top O
1with lower section center of circle O
2spacing D to seal the height of tooth on axle 6, therefore the sealing tooth of zigzag tooth labyrinth seal can not collide and damage in installation process, and dismounting is simply efficient.
There is a labyrinth sealing installation method for labyrinth seal structure described above, comprise the following steps,
As shown in Figure 4, under feather key 12 on lower seal 10-1 is mobile along horizontal guide slot 3 cooperation, lower seal 10-1 is moved horizontally to the flanged surface of lower seal and contacts with the fastening flange face 5 on gear-box, now, two rectangle feather keys 12 of lower seal 10-1 just slide in annular spacing groove 4, and the cross-sectional axis of the cross-sectional axis of lower seal 10-1 and sealing mounting hole 2 bottom overlaps.
As shown in Figure 5, rotate lower seal 10-1 several angle, the horizonally split face of lower seal 10-1 is horizontal;
As shown in Figure 6, under feather key 12 on upper seal 10-2 is mobile along horizontal guide slot 3 cooperation, upper seal 10-2 is moved horizontally to the flanged surface of seal and contacts with the fastening flange face 5 on gear-box, now, as shown in Figure 7, upper seal two rectangle feather keys 12 just slide in annular spacing groove 4, and the cross-sectional axis of the cross-sectional axis of upper seal 10-2 and lower seal 10-1 overlaps, the cooperation of upper-lower seal body is combined into cylindric sealing tooth, forms zigzag tooth labyrinth seal with the sealing tooth on axle.
Labyrinth seal structure disclosed in the embodiment of the present invention and installation method adopt zigzag tooth labyrinth seal structure to have better sealing effect, and not by the impact of physical dimension, structure is simple simultaneously, and keep in repair convenient, efficiency is high.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a labyrinth seal structure, comprise sealing mounting hole (2) and axle (6), seal (10) is provided with in described sealing mounting hole (2), described seal (10) and the labyrinth seal of described axle (6) composition, it is characterized in that, described sealing mounting hole (2) is provided with horizontal guide slot (3) and annular spacing groove (4), described horizontal guide slot (3) is communicated with annular spacing groove (4), described seal (10) comprises seal (10-2) and lower seal (10-1), described seal (10) outside is provided with feather key (12), during described upper seal (10-2) and described lower seal (10-1) slip into described annular spacing groove (4) by described feather key (12) along horizontal guide slot (3) respectively, cooperation forms cylindric sealing tooth, sealing tooth on described cylindric sealing tooth and described axle (6) forms zigzag tooth labyrinth seal.
2. labyrinth seal structure according to claim 1, is characterized in that, described sealing mounting hole (2) is made up of upper and lower, the center of circle, cross section, described top O
1with described lower section center of circle O
2between have certain distance D.
3. labyrinth seal structure according to claim 1, is characterized in that, described feather key (12) lays respectively at described upper seal (10-2) and described lower seal (10-1) one end away from mounting flange face, and each side has one.
4. labyrinth seal structure according to claim 2, is characterized in that, described horizontal guide slot (3) has two, is positioned at described sealing mounting hole (2) top, and is positioned at center of circle O
1horizontal plane on.
5. labyrinth seal structure according to claim 2, is characterized in that, described annular spacing groove (4) and described sealing mounting hole (2) bottom coaxial line.
6. labyrinth seal structure according to claim 2, is characterized in that, described upper seal (10-2), described lower seal (10-1) and described sealing mounting hole (2) bottom three have identical axis.
7. labyrinth seal structure according to claim 2, is characterized in that, described distance D is greater than the height of described axle (6) upper sealing tooth.
8. a labyrinth sealing installation method, is characterized in that, has the labyrinth seal structure described in any one of claim 1-7, and comprises the following steps,
Under feather key on lower seal moves along horizontally-guided slot fit, lower seal is moved horizontally to the flanged surface of lower seal and contacts with the fastening flange face on gear-box, and now, lower seal feather key is arranged in annular spacing groove;
Rotate lower seal, the horizonally split face of lower seal is horizontal;
Under feather key on upper seal moves along horizontally-guided slot fit, upper seal is moved horizontally to the flanged surface of seal and contacts with the fastening flange face on gear-box, and now, upper seal feather key is arranged in annular spacing groove;
The cooperation of upper-lower seal body is combined into cylindric sealing tooth, forms zigzag tooth labyrinth seal with the sealing tooth on axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432617.1A CN102966589B (en) | 2012-11-02 | 2012-11-02 | Labyrinth sealing structure and mounting method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210432617.1A CN102966589B (en) | 2012-11-02 | 2012-11-02 | Labyrinth sealing structure and mounting method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102966589A CN102966589A (en) | 2013-03-13 |
| CN102966589B true CN102966589B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210432617.1A Active CN102966589B (en) | 2012-11-02 | 2012-11-02 | Labyrinth sealing structure and mounting method thereof |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953576B (en) * | 2014-04-04 | 2017-01-04 | 上海第一水泵厂有限公司 | A kind of centrifugal pump sealing structure and using this sealing structure |
| CN104959816B (en) * | 2015-05-22 | 2017-05-10 | 清华大学 | Assembling method of rotor experiment table experiment member for labyrinth sealing experiment |
| CN107725468A (en) * | 2017-10-30 | 2018-02-23 | 南京磁谷科技有限公司 | A kind of impeller back seal structure |
| CN113513595B (en) * | 2021-05-11 | 2023-06-27 | 无锡艾尔泰科压缩机有限公司 | Integrated leakage-free labyrinth oil seal structure of centrifugal compressor |
| CN114370509B (en) * | 2021-12-31 | 2024-01-16 | 江苏新凯晟机械设备有限公司 | Labyrinth sealing structure based on high-speed centrifugal machine and mounting method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237235A (en) * | 1996-10-09 | 1999-12-01 | 科尔特克北卡罗来纳公司 | Labyrinth sealing device and method of assembly |
| US6367807B1 (en) * | 1998-10-19 | 2002-04-09 | Environamics Corporation | Labyrinth seal assembly |
| CN1510320A (en) * | 2002-12-17 | 2004-07-07 | Ħ�����蹫˾ | Internal sealing ring for roll machine oil slick bearing |
| CN1573024A (en) * | 2003-05-21 | 2005-02-02 | 三菱重工业株式会社 | Shaft seal mechanism, shaft seal mechanism assembling structure and large size fluid machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07280105A (en) * | 1994-04-01 | 1995-10-27 | Kubota Corp | Non-contact type shaft seal device |
-
2012
- 2012-11-02 CN CN201210432617.1A patent/CN102966589B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1237235A (en) * | 1996-10-09 | 1999-12-01 | 科尔特克北卡罗来纳公司 | Labyrinth sealing device and method of assembly |
| US6367807B1 (en) * | 1998-10-19 | 2002-04-09 | Environamics Corporation | Labyrinth seal assembly |
| CN1510320A (en) * | 2002-12-17 | 2004-07-07 | Ħ�����蹫˾ | Internal sealing ring for roll machine oil slick bearing |
| CN1573024A (en) * | 2003-05-21 | 2005-02-02 | 三菱重工业株式会社 | Shaft seal mechanism, shaft seal mechanism assembling structure and large size fluid machine |
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| CN102966589A (en) | 2013-03-13 |
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Address after: 201400 Fengxian District Bay Town, Shanghai, No. 54 Road, building 751, building 3 Patentee after: SANY ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 201422 Fengxian District Bay Town, Shanghai, No. 54 Road, building 751, building 3 Patentee before: SANY ENERGY HEAVY INDUSTRY Co.,Ltd. |
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Effective date of registration: 20170307 Address after: Cheng Hu road Kunshan Development Zone in Suzhou City, Jiangsu province 215300 No. 9999 room 6 Patentee after: KUNSHAN SANYI ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. Address before: 201400 Fengxian District Bay Town, Shanghai, No. 54 Road, building 751, building 3 Patentee before: SANY ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |