CN104791291A - Carbon ring sealed centrifugal fan - Google Patents
Carbon ring sealed centrifugal fan Download PDFInfo
- Publication number
- CN104791291A CN104791291A CN201510187349.5A CN201510187349A CN104791291A CN 104791291 A CN104791291 A CN 104791291A CN 201510187349 A CN201510187349 A CN 201510187349A CN 104791291 A CN104791291 A CN 104791291A
- Authority
- CN
- China
- Prior art keywords
- carbon ring
- bearing
- seal
- ring seal
- centrifugal blower
- 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
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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
- F04D29/12—Shaft sealings using sealing-rings
- F04D29/122—Shaft sealings using sealing-rings especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a carbon ring sealed centrifugal fan which comprises a fan base. A motor, a bearing box and a fan housing are respectively installed on the fan base, a bearing is installed in the bearing box and is connected with the motor through a coupler, a sealing body is installed on the side wall of the fan housing and is connected with the bearing, and more than one carbon ring sealing ring is installed between the sealing body and the bearing. The carbon ring sealed centrifugal fan is simple in structure, convenient to install and good in sealing effect, the carbon ring sealing rings are resistant to abrasion, acid and alkali, and maintenance is facilitated while production cost is reduced.
Description
Technical field
The present invention relates to a kind of carbon ring seal centrifugal blower.
Background technique
Centrifugal blower is the mechanical energy relying on input, improves gas pressure and to supply gas side by side body
machinery, it is a kind of driven fluid
machinery.Along with widely using of centrifugal blower, the requirement of explosion proof especially for centrifugal blower in inflammable and explosive running environment also improves constantly.The centrifugal extension set of electric machine external is widely used because of its good heat dissipation effect, but the impeller in Blower Housing needs to be connected with motor by transmission shaft, and therefore transmission shaft has to pass through Blower Housing.The method commonly used for the sealing between Blower Housing and transmission shaft at present installs seal, but still there is gap between seal and transmission shaft, thus affect sealing effect.
Summary of the invention
The object of the present invention is to provide a kind of carbon ring seal centrifugal blower, its structure is simple, easy for installation, good sealing effect, and carbon ring seal circle is wear-resisting, acidproof, alkaline-resisting, is convenient to maintenance while reducing cost of production.
In order to achieve the above object, technological scheme of the present invention is:
A kind of carbon ring seal centrifugal blower, comprise base plate, described base plate is separately installed with motor, bearing housing, fan casing, in wherein said bearing housing, bearing is installed, described bearing is connected with motor by coupling, described fan casing sidewall is provided with seal, and described seal is connected with bearing, is provided with the carbon ring seal circle of more than 1 between described seal and bearing.
Described carbon ring seal circle comprises ring packing cavity and annular sleeve, and described ring packing cavity is connected with ring packing axle sleeve, and described ring packing sleeve outer surface is coated with aluminium sesquioxide wearing layer or wearing layer is pressed against in oxidation two.
Offer circular groove in described ring packing cavity, the ring-shaped graphite seal ring that cross section is rectangle is installed in described circular groove.
Nitrogen separation layer is filled with between described carbon ring seal circle and bearing.
Spring is socketed with outside described carbon ring seal circle.
5 carbon ring seal circles are equidistantly installed between described seal and bearing.
The invention has the beneficial effects as follows: a kind of carbon ring seal centrifugal blower, its structure is simple, easy for installation, good sealing effect, and carbon ring seal circle is wear-resisting, acidproof, alkaline-resisting, is convenient to maintenance while reducing cost of production.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the mounting structure schematic diagram between coupling shaft and seal;
Fig. 3 is A-A sectional view of Fig. 2.
Embodiment
Embodiment 1
A kind of carbon ring seal centrifugal blower as shown in Figure 1, Figure 2, Figure 3 shows, comprise base plate 1, described base plate 1 is separately installed with motor 2, bearing housing 3, fan casing 4, in wherein said bearing housing 3, bearing 5 is installed, described bearing 5 is connected with motor 2 by coupling 6, described fan casing 4 sidewall is provided with seal 7, and described seal 7 is connected with bearing 5, is equidistantly provided with 5 carbon ring seal circles 8 between described seal 7 and bearing 5.
Described carbon ring seal circle 8 comprises ring packing cavity 9 and annular sleeve 10, and described ring packing cavity 9 is connected with ring packing axle sleeve 10, and described ring packing axle sleeve 10 outer surface has aluminium sesquioxide wearing layer or oxidation two to press against wearing layer.
Offer circular groove 12 in described ring packing cavity 9, the ring-shaped graphite seal ring 13 that cross section is rectangle is installed in described circular groove 12.
Spring 11 is socketed with outside described carbon ring seal circle 8.
Nitrogen separation layer is filled with between described carbon ring seal circle 8 and bearing 5.Nitrogen consumption can control at 20 ~ 40nm3/h, and (the large-scale gas-blowing engine of TRT) is mainly used in the inflammable poisonous medium of sealing.
Carbon ring seal belongs to floating-ring seal gas throttling formula non-contact seals.Its sealing principle between floating ring and axle sleeve, forms air film by sealing gas, produces reducing pressure by regulating flow, stops high side gas to flow to low voltage side.Operationally, floating ring stressing conditions is similar to bearing, and difference is: for bearing, and axle floats and bearing shell maintains static, and axle rotates oil film generation oil film buoyancy and lifted by axle; And concerning floating ring, because floating ring weight is very little, floating ring can lift by the air film produced in floating ring and shaft clearance when axle rotates, axle is relatively-stationary.According to bearing film principle, as floating ring and axle are completely concentric, then can not produce air film buoyancy, as floating ring and eccentric shaft, then will produce air film buoyancy when axle rotates, buoyancy makes floating ring float and makes eccentric reduction.The buoyancy produced when being reduced to a certain degree is just in time equal in weight with floating ring, reaches transient equiliblium.Because floating ring is very light, the bias of therefore transient equiliblium is very little, and namely floating ring can keep concentric with axle automatically substantially, and this is the advantage of floating-ring seal.Under normal operation, floating ring and axle (or axle sleeve) are in contactless state substantially, have annular sulculus at per pass carbocyclic ring inner face simultaneously, gas forms air whirl through sulculus at this and cuts off dielectric gas, floating-ring seal reaches sealing purpose, so can be used on compared with on the rotation axis seal under high parameter.
A kind of carbon ring seal centrifugal blower of the present embodiment, its structure is simple, easy for installation, good sealing effect, and carbon ring seal circle is wear-resisting, acidproof, alkaline-resisting, is convenient to maintenance while reducing cost of production.
Claims (6)
1. a carbon ring seal centrifugal blower, it is characterized in that: comprise base plate (1), described base plate (1) is separately installed with motor (2), bearing housing (3), fan casing (4), bearing (5) is installed in wherein said bearing housing (3), described bearing (5) is connected with motor (2) by coupling (6), described fan casing (4) sidewall is provided with seal (7), described seal (7) is connected with bearing (5), is provided with the carbon ring seal circle (8) of more than 1 between described seal (7) and bearing (5).
2. a kind of carbon ring seal centrifugal blower according to claim 1, it is characterized in that: described carbon ring seal circle (8) comprises ring packing cavity (9) and annular sleeve (10), described ring packing cavity (9) is connected with ring packing axle sleeve (10), and described ring packing axle sleeve (10) outer surface has aluminium sesquioxide wearing layer or oxidation two to press against wearing layer.
3. a kind of carbon ring seal centrifugal blower according to claim 2, is characterized in that: offer circular groove (12) in described ring packing cavity (9), is provided with the ring-shaped graphite seal ring (13) that cross section is rectangle in described circular groove (12).
4. a kind of carbon ring seal centrifugal blower according to claim 1 and 2, is characterized in that: be socketed with spring (11) outside described carbon ring seal circle (8).
5. a kind of carbon ring seal centrifugal blower according to claim 1, is characterized in that: be filled with nitrogen separation layer between described carbon ring seal circle (8) and bearing (5).
6. a kind of carbon ring seal centrifugal blower according to claim 1, is characterized in that: be equidistantly provided with 5 carbon ring seal circles (8) between described seal (7) and bearing (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510187349.5A CN104791291A (en) | 2015-04-21 | 2015-04-21 | Carbon ring sealed centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510187349.5A CN104791291A (en) | 2015-04-21 | 2015-04-21 | Carbon ring sealed centrifugal fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104791291A true CN104791291A (en) | 2015-07-22 |
Family
ID=53556362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510187349.5A Pending CN104791291A (en) | 2015-04-21 | 2015-04-21 | Carbon ring sealed centrifugal fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104791291A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989821A (en) * | 2017-12-29 | 2018-05-04 | 逸盛大化石化有限公司 | A kind of PTA devices filter-press circulating air wind turbine carbon ring sealing structure and technique |
| CN112780585A (en) * | 2019-11-06 | 2021-05-11 | 中国石油化工股份有限公司 | Explosion-proof centrifugal ventilator and explosion-proof method thereof |
| CN117823454A (en) * | 2023-12-29 | 2024-04-05 | 无锡艾尔泰科压缩机有限公司 | Integrated high-pressure carbon ring shaft seal structure and centrifugal compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6287074B1 (en) * | 1997-03-31 | 2001-09-11 | Nate International | Mechanical seal for shafts and axles |
| CN202937480U (en) * | 2012-12-07 | 2013-05-15 | 长沙市湘桥风机制造有限公司 | Multistage impeller centrifugal blower |
| CN203500102U (en) * | 2013-10-22 | 2014-03-26 | 浙江义乌星耀风机有限公司 | Anti-leakage structure of gas axial flow fan |
| CN204532949U (en) * | 2015-04-21 | 2015-08-05 | 浙江聚英风机工业有限公司 | A kind of carbon ring seal centrifugal blower |
-
2015
- 2015-04-21 CN CN201510187349.5A patent/CN104791291A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6287074B1 (en) * | 1997-03-31 | 2001-09-11 | Nate International | Mechanical seal for shafts and axles |
| CN202937480U (en) * | 2012-12-07 | 2013-05-15 | 长沙市湘桥风机制造有限公司 | Multistage impeller centrifugal blower |
| CN203500102U (en) * | 2013-10-22 | 2014-03-26 | 浙江义乌星耀风机有限公司 | Anti-leakage structure of gas axial flow fan |
| CN204532949U (en) * | 2015-04-21 | 2015-08-05 | 浙江聚英风机工业有限公司 | A kind of carbon ring seal centrifugal blower |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989821A (en) * | 2017-12-29 | 2018-05-04 | 逸盛大化石化有限公司 | A kind of PTA devices filter-press circulating air wind turbine carbon ring sealing structure and technique |
| CN112780585A (en) * | 2019-11-06 | 2021-05-11 | 中国石油化工股份有限公司 | Explosion-proof centrifugal ventilator and explosion-proof method thereof |
| CN117823454A (en) * | 2023-12-29 | 2024-04-05 | 无锡艾尔泰科压缩机有限公司 | Integrated high-pressure carbon ring shaft seal structure and centrifugal compressor |
| CN117823454B (en) * | 2023-12-29 | 2024-05-28 | 无锡艾尔泰科压缩机有限公司 | Integrated high-pressure carbon ring shaft seal structure and centrifugal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150722 |
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| RJ01 | Rejection of invention patent application after publication |