CN108180160A - A kind of centrifugal blower sealing device - Google Patents
A kind of centrifugal blower sealing device Download PDFInfo
- Publication number
- CN108180160A CN108180160A CN201711442479.4A CN201711442479A CN108180160A CN 108180160 A CN108180160 A CN 108180160A CN 201711442479 A CN201711442479 A CN 201711442479A CN 108180160 A CN108180160 A CN 108180160A
- Authority
- CN
- China
- Prior art keywords
- axle sleeve
- toothed projections
- sealing device
- uniformly arranged
- tooth type
- 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.)
- Pending
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 26
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/102—Shaft sealings especially adapted for elastic fluid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of centrifugal blower sealing device, including：Axle sleeve, the left side of the axle sleeve is located at depression, the right side of the axle sleeve is located at high-pressure area, the external peripheral surface at the axle sleeve both ends is equipped with labyrinth seal structure, the stage casing of the axle sleeve is equipped with oblique tooth type sealing structure, the labyrinth seal structure is to be uniformly arranged several annular protrusions in an axial direction on the circumferential surface of axle sleeve, the circumferential surface of the annular protrusion is inclined-plane, the oblique tooth type sealing structure is to be uniformly arranged in the circumferential direction several inclined toothed projections, the toothed projections left end downwardly-inclined direction is opposite with the direction that axle sleeve rotates, the rectangular cross-section of the toothed projections, its section of the toothed projections gradually increases from left to right, the axle sleeve is closely sleeved in air blower shaft.The configuration of the present invention is simple, easy to process, installation and maintenance, can play good sealing effect, reduce production cost, improve economic benefit.
Description
Technical field
The invention belongs to blower technology fields, more particularly to a kind of centrifugal blower sealing device.
Background technology
Shaft one end connection gear of centrifugal blower, the other end pass through stator, and impeller is connected into spiral case inside, due to
There are gap between shaft and stator, centrifugal blower in the running, gas inside gear-box can by shaft and stator it
Between gap to spiral case internal leakage, this had both affected the working efficiency of centrifugal blower, also influenced the cooling inside gear-box, because
This needs to be sealed gap.Generally it is divided into realizing active sealing and passive seal to clearance seal, passive seal is close compared with labyrinth
It seals to be common, although the sealing can achieve the purpose that hinder leakage, is fully sealed because it can not reach, in gear-box still
There is a small amount of gas to leak into spiral case, notification number is disclosed for the patent of invention of CN104847689A pacifies on shaft and stator
The scheme of axial blade is filled, pressure is generated when axial blade operates to prevent the leakage of gear-box internal gas, so as to fulfill
Sealing, encapsulation scheme disclosed in the patent can play preferable sealing effect, but axis stream is processed on shaft and stator
Blade, difficulty of processing is big, manufacture is of high cost, and the axial motion of shaft can damage sealing impeller after long time running.
Invention content
Above-mentioned in order to solve the problems, such as, the present invention proposes a kind of centrifugal blower sealing device, apparatus structure letter
Single, easy to process, installation and maintenance can play good sealing effect, reduce production cost, improve economic benefit.
To achieve these goals, the present invention uses following scheme, including：
Axle sleeve, the left side of the axle sleeve are located at depression, and the right side of the axle sleeve is located at high-pressure area, the axle sleeve two
The external peripheral surface at end is equipped with labyrinth seal structure, and the stage casing of the axle sleeve is equipped with oblique tooth type sealing structure.
The labyrinth seal structure is to be uniformly arranged several annular protrusions in an axial direction on the circumferential surface of axle sleeve, the convex annular
The circumferential surface risen is inclined-plane.
The oblique tooth type sealing structure is to be uniformly arranged in the circumferential direction several inclined toothed projections, the toothed projections left end to
Under the rotation of inclined direction and axle sleeve direction on the contrary, the rectangular cross-section of the toothed projections, its section of the toothed projections by
Left-to-right gradually increases.
The axle sleeve is closely sleeved in air blower shaft.
During assembling, the axle sleeve of the device is sleeved in shaft, then passes through stator together, into spiral case inside connection leaf
Wheel.
The configuration of the present invention is simple, easy to process, installation and maintenance, can play good sealing effect, reduce and be produced into
This, improves economic benefit.
Description of the drawings
Fig. 1 is schematic structural view of the invention.
Fig. 2 is the schematic diagram that the present invention is sleeved in shaft.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, so that those skilled in the art can be more clear
The understanding of Chu, as shown in Figure 1 and Figure 2, the present invention use following scheme, including：
Axle sleeve 1, the left side of the axle sleeve 1 are located at depression, and the right side of the axle sleeve 1 is located at high-pressure area, the axis
The external peripheral surface for covering 1 both ends is equipped with labyrinth seal structure, and the stage casing of the axle sleeve 1 is equipped with oblique tooth type sealing structure.
The labyrinth seal structure is to be uniformly arranged several annular protrusions 2, the annular in an axial direction on the circumferential surface of axle sleeve 1
The circumferential surface of protrusion 2 is inclined-plane.
The oblique tooth type sealing structure is to be uniformly arranged in the circumferential direction several inclined toothed projections 3,3 left end of toothed projections
The direction that downwardly-inclined direction is rotated with axle sleeve 1 is on the contrary, the rectangular cross-section of the toothed projections 3,3 its section of toothed projections
Face gradually increases from left to right.
The axle sleeve 1 is closely sleeved in air blower shaft 4.
During assembling, the axle sleeve of the device is sleeved in shaft, then passes through stator together, into spiral case inside connection leaf
Wheel.
The configuration of the present invention is simple, easy to process, installation and maintenance, can play good sealing effect, reduce and be produced into
This, improves economic benefit.
Claims (4)
1. a kind of centrifugal blower sealing device, including axle sleeve (1), the left side of the axle sleeve (1) is located at depression, described
The right side of axle sleeve (1) is located at high-pressure area, it is characterised in that:It is close that the external peripheral surface at axle sleeve (1) both ends is equipped with labyrinth type
Seal structure, the stage casing of the axle sleeve (1) are equipped with oblique tooth type sealing structure.
2. sealing device according to claim 1, it is characterised in that：The labyrinth seal structure is the week in axle sleeve (1)
Several annular protrusions (2) are uniformly arranged on face in an axial direction, the circumferential surface of the annular protrusion (2) is inclined-plane.
3. sealing device according to claim 1, it is characterised in that：The oblique tooth type sealing structure is to be uniformly arranged in the circumferential direction
Several inclined toothed projections (3), the direction of toothed projections (3) the left end downwardly-inclined direction and axle sleeve (1) rotation on the contrary,
The rectangular cross-section of the toothed projections (3), toothed projections (3) its section gradually increase from left to right.
4. according to any one of claims 1 to 3 sealing device, it is characterised in that:The axle sleeve (1) is closely sleeved on drum
On fan shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442479.4A CN108180160A (en) | 2017-12-27 | 2017-12-27 | A kind of centrifugal blower sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711442479.4A CN108180160A (en) | 2017-12-27 | 2017-12-27 | A kind of centrifugal blower sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108180160A true CN108180160A (en) | 2018-06-19 |
Family
ID=62547586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711442479.4A Pending CN108180160A (en) | 2017-12-27 | 2017-12-27 | A kind of centrifugal blower sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108180160A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11293295B2 (en) | 2019-09-13 | 2022-04-05 | Pratt & Whitney Canada Corp. | Labyrinth seal with angled fins |
| GB2599648A (en) * | 2020-10-06 | 2022-04-13 | Caterpillar Motoren Gmbh & Co | Crankshaft seal unit for an internal combustion engine |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100034646A1 (en) * | 2008-08-07 | 2010-02-11 | Hitachi Plant Technologies, Ltd. | Centrifugal compressor |
| CN101943184A (en) * | 2009-07-06 | 2011-01-12 | 李豪 | Hydrodynamic and equilibrium combined seal for impeller of slurry pump |
| CN203686157U (en) * | 2013-07-05 | 2014-07-02 | 沈阳北碳密封有限公司 | Multilateral honeycomb seal combined structure |
| JP2014152696A (en) * | 2013-02-08 | 2014-08-25 | Hitachi Ltd | Labyrinth seal device, and turbomachine using the same |
| CN203835783U (en) * | 2014-02-24 | 2014-09-17 | 温州市天龙轻工设备有限公司 | Labyrinth seal |
| CN204437288U (en) * | 2015-01-15 | 2015-07-01 | 武汉格瑞拓机械有限公司 | A kind of inter-stage sealing axle sleeve structure of multistage centrifugal blower |
| CN204572547U (en) * | 2015-04-15 | 2015-08-19 | 沈阳鼓风机集团齿轮压缩机有限公司 | A kind of sealing configuration of acroleic acid device recycle gas blower |
| CN207687043U (en) * | 2017-12-27 | 2018-08-03 | 安徽虎渡科达流体机械有限公司 | A kind of centrifugal blower sealing device |
-
2017
- 2017-12-27 CN CN201711442479.4A patent/CN108180160A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100034646A1 (en) * | 2008-08-07 | 2010-02-11 | Hitachi Plant Technologies, Ltd. | Centrifugal compressor |
| CN101943184A (en) * | 2009-07-06 | 2011-01-12 | 李豪 | Hydrodynamic and equilibrium combined seal for impeller of slurry pump |
| JP2014152696A (en) * | 2013-02-08 | 2014-08-25 | Hitachi Ltd | Labyrinth seal device, and turbomachine using the same |
| CN203686157U (en) * | 2013-07-05 | 2014-07-02 | 沈阳北碳密封有限公司 | Multilateral honeycomb seal combined structure |
| CN203835783U (en) * | 2014-02-24 | 2014-09-17 | 温州市天龙轻工设备有限公司 | Labyrinth seal |
| CN204437288U (en) * | 2015-01-15 | 2015-07-01 | 武汉格瑞拓机械有限公司 | A kind of inter-stage sealing axle sleeve structure of multistage centrifugal blower |
| CN204572547U (en) * | 2015-04-15 | 2015-08-19 | 沈阳鼓风机集团齿轮压缩机有限公司 | A kind of sealing configuration of acroleic acid device recycle gas blower |
| CN207687043U (en) * | 2017-12-27 | 2018-08-03 | 安徽虎渡科达流体机械有限公司 | A kind of centrifugal blower sealing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11293295B2 (en) | 2019-09-13 | 2022-04-05 | Pratt & Whitney Canada Corp. | Labyrinth seal with angled fins |
| GB2599648A (en) * | 2020-10-06 | 2022-04-13 | Caterpillar Motoren Gmbh & Co | Crankshaft seal unit for an internal combustion engine |
| GB2599648B (en) * | 2020-10-06 | 2023-03-22 | Caterpillar Motoren Gmbh & Co | Crankshaft seal unit for an internal combustion engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180619 |
|
| RJ01 | Rejection of invention patent application after publication |