CN103438021A - Labyrinth seal structure of air blower - Google Patents
Labyrinth seal structure of air blower Download PDFInfo
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- CN103438021A CN103438021A CN2013104086736A CN201310408673A CN103438021A CN 103438021 A CN103438021 A CN 103438021A CN 2013104086736 A CN2013104086736 A CN 2013104086736A CN 201310408673 A CN201310408673 A CN 201310408673A CN 103438021 A CN103438021 A CN 103438021A
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Abstract
The invention relates to a labyrinth seal structure of an air blower, and belongs to the technical field of air blowers. The technical scheme is that an air blower stator is provided with a groove at the matched part of the air blower stator (1) and an air blower rotor (3); the groove is internally provided with a labyrinth seal body (2); the matched part of the air blower rotor is provided with rotor seal teeth (4); the rotor seal teeth (4) and the labyrinth seal body are in contact and are matched; the rotor seal teeth are annular, and the sections of the rotor seal teeth are of the comb tooth shape; the rotor seal teeth rotate together with the air blower rotor; a seal structure similar to a labyrinth is formed by the rotor seal comb teeth and the labyrinth seal body. According to the invention, the problems that the labyrinth seal body of the traditional air blower is high in manufacture cost, and is high in maintaining cost after being damaged are solved; meanwhile, the result that impellors of the air blower rotor and the labyrinth seal body are damaged at the same time is prevented; the labyrinth seal body is made of non-metallic materials, so that the clearance of the labyrinth seal can be small or even zero; the leakage and back flow of internal gases of the air blower in operation can be reduced; the efficiency of the air blower is improved.
Description
Technical field
Patent of the present invention relates to a kind of blower labyrinth seal structure, belongs to the blower technical field.
Background technique
Impeller on blower rotor High Rotation Speed in the stator of blower is compressed conveying gas, gas after compressed is discharged by the outlet pipe on the casing of giving vent to anger, for the gas that prevents from being transferred produces leakage reversed flow in stator interior, be typically provided with the labyrinth sealing body of being made by the metallic material such as aluminum alloy, cast iron or teflon, carbocyclic ring at impeller intake grill outer ring and stator binding site, fan shaft and stator binding site.The problem that background technique exists is: 1. the labyrinth sealing body fabricating cost of traditional blower is high; 2. if the labyrinth sealing body and the mutual friction of rotor generation phase made by metallic material may cause impeller and labyrinth sealing body to damage simultaneously, be difficult to repair the impeller that can only more renew and labyrinth seal accessory after damaging; 3. if the labyrinth sealing body of blower is to be made by aluminum alloy or other metallic material; in order to protect impeller and labyrinth sealing body; gap between rotor and labyrinth sealing body is larger, easily causes gas to reflux by the internal void between rotor and stator, reduces the efficiency of blower.
the patent of invention content
Patent purpose of the present invention is to provide a kind of blower labyrinth seal structure, changed traditional drum blower fan labyrinth seal structure, mode and material, realized protecting to greatest extent the rotor of blower and impeller to be without prejudice when blower meets accident fault, if simultaneously brand-new blower labyrinth sealing body is damaged, only need again bond and get final product, in addition because brand-new blower labyrinth sealing body is nonmetallic material, it is even zero that gap between blower wheel and brand-new blower labyrinth sealing body can reduce, reduced the backflow leakage of compressed gas, improved the working efficiency of blower, solve the problems referred to above that background technique exists.
The technological scheme of patent of the present invention is:
A kind of blower labyrinth seal structure, comprise blower stator, labyrinth sealing body, blower rotor, rotor seal broach, blower main shaft, Intake shaft bearing and the bearing support of giving vent to anger, blower rotor is arranged in the blower stator, and the blower main shaft is arranged on the bearing in the Intake shaft bearing of mutual coupling and the bearing support of giving vent to anger; Be provided with groove on the blower stator of blower stator and blower rotor cooperation place, be provided with labyrinth sealing body in groove, be provided with the rotor seal broach in the blower rotor cooperation place, the rotor seal broach contacts coupling with labyrinth sealing body, described rotor seal broach is ring-type, section is the broach shape, and along with blower rotor rotates together, the rotor seal broach forms the sealing configuration in similar labyrinth together with labyrinth sealing body.
Described labyrinth sealing body is the hydraulic jack guide ring, also makes this enclose, and material is teflon or ptfe composite.Process groove according to the labyrinth sealing body size on the blower stator, then use high temperature resistant, high strength AB glue that labyrinth sealing body is bonded in the groove processed.
Process the rotor seal broach on impeller on blower rotor and stuffing box gland, become one with impeller and stuffing box gland.
The present invention can apply in gas pressing blower, multistage blowers and common centrifugal blower labyrinth seal structure.
The beneficial effect of patent of the present invention is: labyrinth sealing body directly is bonded on blower stator body, do not need to make the labyrinth sealing body of traditional form, the labyrinth sealing body fabricating cost that has solved traditional blower is high, the rear high problem of maintenance cost of damage, once avoid fan rotor and labyrinth sealing body to rub, produced the consequence that Blower Wheel and labyrinth sealing body damage simultaneously simultaneously, after labyrinth sealing body of the present invention damages, only need remove then bonding again to the labyrinth sealing body damaged, maintenance cost is low, in addition because this labyrinth sealing body is nonmetallic material, therefore can be made into little gap to the gap of labyrinth seal, zero clearance even, the leakage reversed flow of internal gas while having reduced blower work, improved the efficiency of blower, this labyrinth sealing body can be applied to operating temperature and be less than 150oC, working pressure is less than the labyrinth seal position of 0.3MPa blower, especially be applicable to the sealing of gas pressing blower, can effectively prevent the leakage of coal gas and sneaking into of air, avoid the security incident caused thus.
The accompanying drawing explanation
Fig. 1 is the embodiment of the present invention one schematic diagram;
The A section enlarged view that Fig. 2 is Fig. 1;
The B section enlarged view that Fig. 3 is Fig. 1;
Fig. 4 is the embodiment of the present invention two schematic diagram;
The C section enlarged view that Fig. 5 is Fig. 4;
The D section enlarged view that Fig. 6 is Fig. 4;
In figure: 1. blower stator, 2. labyrinth sealing body, 3. blower rotor, 4. rotor seal broach.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, patent of the present invention is described further.
Embodiment one, with reference to accompanying drawing 1, is gas pressing blower schematic diagram, a kind of blower labyrinth seal structure, comprise blower stator 1, labyrinth sealing body 2, blower rotor 3, rotor seal broach 4, the blower main shaft, Intake shaft bearing and the bearing support of giving vent to anger, blower rotor is arranged in the blower stator, the blower main shaft is arranged on the bearing in the Intake shaft bearing of mutual coupling and the bearing support of giving vent to anger, be provided with groove on the blower stator of blower stator and blower rotor cooperation place, be provided with labyrinth sealing body in groove, be provided with the rotor seal broach in the blower rotor cooperation place, the rotor seal broach contacts coupling with labyrinth sealing body, described rotor seal broach is ring-type, section is the broach shape, along with blower rotor rotates together, the rotor seal broach forms the sealing configuration in similar labyrinth together with labyrinth sealing body.
Embodiment two, with reference to accompanying drawing 2, be the multistage blowers schematic diagram;
At first process groove on the blower stator that needs sealing between blower stator 1 and blower rotor 3, then, high strength AB glue bond high temperature resistant labyrinth sealing body 2 use is in the groove of blower stator 1, finally, by 4 processing of rotor seal broach, on the impeller and axle sleeve of blower rotor 3, the rotor seal broach contacts coupling with labyrinth sealing body.
Patent of the present invention has not only changed the labyrinth seal mode of background blower; reduced the manufacture cost of blower; protected to greatest extent the probability of the destruction of impeller and stuffing box gland wearing and tearing itself on the blower rotor; reduced the cost of changing labyrinth sealing body; the Leakage Gas reduced between blower rotor and blower stator refluxes, and has improved the efficiency of blower.
Claims (3)
1. a blower labyrinth seal structure, it is characterized in that: comprise blower stator (1), labyrinth sealing body (2), blower rotor (3), rotor seal broach (4), the blower main shaft, Intake shaft bearing and the bearing support of giving vent to anger, blower rotor is arranged in the blower stator, the blower main shaft is arranged on the bearing in the Intake shaft bearing of mutual coupling and the bearing support of giving vent to anger, be provided with groove on the blower stator of blower stator and blower rotor cooperation place, be provided with labyrinth sealing body in groove, be provided with the rotor seal broach in the blower rotor cooperation place, the rotor seal broach contacts coupling with labyrinth sealing body, described rotor seal broach is ring-type, section is the broach shape, along with blower rotor rotates together, the rotor seal broach forms the sealing configuration in similar labyrinth together with labyrinth sealing body.
2. a kind of blower labyrinth seal structure according to claim 1, it is characterized in that: described labyrinth sealing body is the hydraulic jack guide ring, also makes this enclose, material is teflon or ptfe composite; Process groove at the blower stator according to the labyrinth sealing body size, then use high temperature resistant, high strength AB glue that labyrinth sealing body is bonded in the groove processed.
3. a kind of blower labyrinth seal structure according to claim 1 and 2, is characterized in that: process the rotor seal broach on the impeller on blower rotor and stuffing box gland, become one with impeller and stuffing box gland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104086736A CN103438021A (en) | 2013-09-10 | 2013-09-10 | Labyrinth seal structure of air blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104086736A CN103438021A (en) | 2013-09-10 | 2013-09-10 | Labyrinth seal structure of air blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103438021A true CN103438021A (en) | 2013-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104086736A Pending CN103438021A (en) | 2013-09-10 | 2013-09-10 | Labyrinth seal structure of air blower |
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| CN (1) | CN103438021A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604974A (en) * | 2015-12-29 | 2016-05-25 | 西安航天动力研究所 | Centrifugal pump impeller sealing structure |
| CN110857705A (en) * | 2018-08-24 | 2020-03-03 | 陕西重型汽车有限公司 | Annular fan wind protection device for vehicle |
| CN112360804A (en) * | 2020-10-23 | 2021-02-12 | 中国航发沈阳黎明航空发动机有限责任公司 | Gas compressor gas path sealing structure and processing method of easily-abraded rubber sealing layer |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987003654A1 (en) * | 1985-12-11 | 1987-06-18 | A. Ahlstrom Corporation | Apparatus for moving the impeller of a pump axially |
| CN201027693Y (en) * | 2007-04-12 | 2008-02-27 | 湖北湖风机械制造有限公司 | Single-stage leakage-proof coal gas centrifugal blower |
| CN201068887Y (en) * | 2007-06-13 | 2008-06-04 | 贾祯祥 | Suction mouth and heavy pressure cavity separated centrifugal pump |
| CN202811477U (en) * | 2012-09-02 | 2013-03-20 | 湖北省风机厂有限公司 | Sealing device of coal gas centrifugal blower |
| CN202937495U (en) * | 2012-10-29 | 2013-05-15 | 玉锋实业集团有限公司 | Centrifugal fan combined sealing device |
| CN203420927U (en) * | 2013-09-10 | 2014-02-05 | 唐山怡人鼓风机制造有限公司 | Blower labyrinth seal structure |
-
2013
- 2013-09-10 CN CN2013104086736A patent/CN103438021A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987003654A1 (en) * | 1985-12-11 | 1987-06-18 | A. Ahlstrom Corporation | Apparatus for moving the impeller of a pump axially |
| CN201027693Y (en) * | 2007-04-12 | 2008-02-27 | 湖北湖风机械制造有限公司 | Single-stage leakage-proof coal gas centrifugal blower |
| CN201068887Y (en) * | 2007-06-13 | 2008-06-04 | 贾祯祥 | Suction mouth and heavy pressure cavity separated centrifugal pump |
| CN202811477U (en) * | 2012-09-02 | 2013-03-20 | 湖北省风机厂有限公司 | Sealing device of coal gas centrifugal blower |
| CN202937495U (en) * | 2012-10-29 | 2013-05-15 | 玉锋实业集团有限公司 | Centrifugal fan combined sealing device |
| CN203420927U (en) * | 2013-09-10 | 2014-02-05 | 唐山怡人鼓风机制造有限公司 | Blower labyrinth seal structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105604974A (en) * | 2015-12-29 | 2016-05-25 | 西安航天动力研究所 | Centrifugal pump impeller sealing structure |
| CN110857705A (en) * | 2018-08-24 | 2020-03-03 | 陕西重型汽车有限公司 | Annular fan wind protection device for vehicle |
| CN112360804A (en) * | 2020-10-23 | 2021-02-12 | 中国航发沈阳黎明航空发动机有限责任公司 | Gas compressor gas path sealing structure and processing method of easily-abraded rubber sealing layer |
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| PB01 | Publication | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20131211 |