CN208397310U - A kind of air blower carbon ring sealing structure - Google Patents
A kind of air blower carbon ring sealing structure Download PDFInfo
- Publication number
- CN208397310U CN208397310U CN201721888859.6U CN201721888859U CN208397310U CN 208397310 U CN208397310 U CN 208397310U CN 201721888859 U CN201721888859 U CN 201721888859U CN 208397310 U CN208397310 U CN 208397310U
- Authority
- CN
- China
- Prior art keywords
- carbon ring
- ring
- sealing
- seal body
- ring seal
- 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.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A kind of air blower carbon ring sealing structure, including carbon ring seal body and axle sleeve, the carbon ring seal body is mounted at spindle nose, it is characterised in that: the axle sleeve is provided with ring packing teeth towards carbon ring seal body on one side, is provided with sealing ring between the carbon ring seal body and ring packing teeth.Carbon ring seal is made into irregular shape labyrinth form and is set as the ring packing teeth being arranged successively around shaft by the utility model, a series of gap and expansion cavitys of shutting off are formed between tooth and tooth, sealed medium generates throttle effect when through the gap in tortuous labyrinth and reaches two-way step down Drain Resistance, the leakage of gas can be effectively reduced, sealing effect is improved.
Description
Technical field
The utility model relates to blower manufacturing fields, and in particular to a kind of air blower carbon ring sealing structure.
Background technique
Centrifugal blower is that a kind of turbo compressor for gas conveying is mechanical, and sealing is divided into inner sealing and shaft end is close
Envelope, inner sealing is mainly the internal leakage for preventing and controlling in centrifugal compressor runner, and shaft end seal is mainly in preventing
Portion's gas leak.For shaft end seal according to the medium and pressure difference of conveying, the sealing means of use are different, common are labyrinth
The forms such as formula, bleeder, inflatable, mechanical sealing.
For much conveying the special user of special gas, sealing structure is necessary to ensure that high pressure, the nothing of special media are let out
Leakage.The existing resistance to high speed of outside framework oil seal is not able to satisfy high pressure, and high voltage bearing not to be able to satisfy high linear speed, the service life is shorter；It is mechanical
It is good to seal sealing effect, but since centrifugal blower revolving speed is high, the bad cooling and lubrication for realizing sealing, and blower fan structure is changed
Greatly, it is not able to satisfy the condition of versatility.
Chinese patent Authorization Notice No. CN 202789590U, authorized announcement date are that the utility model on March 13rd, 2013 is public
A kind of novel centrifugal blower suitable for conveying special gas is opened, blower is still made of stator department and rotor portions, in inside
It is sealed into interstage seal between impeller, is sealed into shaft end seal in shaft end, which is characterized in that the shaft end seal includes
The labyrinth seal assemblies of inside and the carbon ring seal component in outside.
The utility model uses labyrinth+carbocyclic ring sealing mechanism, meets coal gas, chemical industry and chemical work to a certain extent
Requirement when the particularity gas such as industry tail gas and its craftsmanship gas conveys to sealing performance.But carbon ring seal is floating-ring seal
Gas throttling formula non-contact seals, its sealing principle are to form air film between floating ring and axle sleeve by sealing gas, generate section
Stream decompression, prevents high side gas from flowing to low-pressure side.And the shortcomings that carbon ring seal, is: being suitable for environment under low pressure, hindered without gas
Still there is certain leakage rate when anti-, this defect is also unable to get effective alleviation using labyrinth seal supplement.
Summary of the invention
The purpose of the utility model is to overcome the defect of existing technology and deficiencies, provide a kind of solid simple, good seal performance
Air blower carbon ring sealing structure.
In order to achieve the above object, the technical solution of the utility model is: a kind of air blower carbon ring sealing structure, including
Carbon ring seal body and axle sleeve, the carbon ring seal body are mounted at spindle nose, it is characterised in that: the axle sleeve is towards carbon ring seal body
Be provided with ring packing teeth on one side, be provided with sealing ring between the carbon ring seal body and ring packing teeth.
Gap between the sealing ring and ring packing teeth is 0.01~0.04mm.
Extension spring is provided on the sealing ring, the extension spring is fixed on the outer ring of sealing ring by positioning cards
On.
The utility model compared with prior art, has the advantage that
1, carbon ring seal is made into irregular shape labyrinth form and is set as the annular being arranged successively around shaft by the utility model
Tooth is sealed, forms a series of shut off gap and expansion cavitys between tooth and tooth, sealed medium is in the gap by tortuous labyrinth
When generate throttle effect and reach two-way step down Drain Resistance, can effectively reduce the leakage of gas, improve sealing effect.
2, originally practical that extension spring is newly set on sealing ring, the drawing of sealing ring outer ring can be passed through in seal wears
The banding for stretching spring pre-tightens it on axis, it is ensured that the sealing performance of device.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
In figure: carbon ring seal body 1, axle sleeve 2, ring packing teeth 3, sealing ring 4, extension spring 5.
Specific embodiment
The utility model is described in further detail below in conjunction with Detailed description of the invention and specific embodiment.
Referring to Fig. 1, a kind of air blower carbon ring sealing structure, including carbon ring seal body 1 and axle sleeve 2, the carbon ring seal body 1
It is mounted at spindle nose, the axle sleeve 2 is provided with ring packing teeth 3, the carbon ring seal body 1 towards carbon ring seal body 1 on one side
Sealing ring 4 is provided between ring packing teeth 3, one end of the sealing ring 4 is embedded in carbon ring seal body 1, sealing ring 4
Gap between the other end and ring packing teeth 3 is 0.01~0.04mm.
In order to enable being provided on the sealing ring 4 even if sealing ring 4, which is worn, does not influence whole sealing performance still
Extension spring 5, the extension spring 5 are fixed on the outer ring of sealing ring 4 by positioning cards.
The utility model is close by carbon ring seal going in ring of being made into that irregular shape labyrinth form is set as being arranged successively around shaft
Tooth is sealed, forms a series of shut off gap and expansion cavitys between tooth and tooth, sealed medium is when through the gap in tortuous labyrinth
It generates throttle effect and reaches two-way step down Drain Resistance.When high-pressure medium is by the carbon ring seal of irregular form, between sealing tooth
It is depressured by flow resistance, the gas film sealing that low-pressure medium is formed between floating ring and axle sleeve again passes through sealing when seal wears
The banding of the extension spring of ring outer ring pre-tightens it on axis, so that sealing ring inner ring compensates automatically, pacifies to reach in inconvenience
Good leakproofness is also had when the gases impedances such as dress nitrogen source.
Claims (3)
1. a kind of air blower carbon ring sealing structure, including carbon ring seal body (1) and axle sleeve (2), carbon ring seal body (1) installation
At spindle nose, it is characterised in that: the axle sleeve (2) is provided with ring packing teeth (3), institute towards carbon ring seal body (1) on one side
It states and is provided with sealing ring (4) between carbon ring seal body (1) and ring packing teeth (3).
2. a kind of air blower carbon ring sealing structure according to claim 1, it is characterised in that: the sealing ring (4) and ring
It is 0.01~0.04mm that shape, which seals the gap between tooth (3),.
3. a kind of air blower carbon ring sealing structure according to claim 1, it is characterised in that: set on the sealing ring (4)
It is equipped with extension spring (5), the extension spring (5) is fixed on the outer ring of sealing ring (4) by positioning cards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721888859.6U CN208397310U (en) | 2017-12-29 | 2017-12-29 | A kind of air blower carbon ring sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721888859.6U CN208397310U (en) | 2017-12-29 | 2017-12-29 | A kind of air blower carbon ring sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208397310U true CN208397310U (en) | 2019-01-18 |
Family
ID=65065872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721888859.6U Active CN208397310U (en) | 2017-12-29 | 2017-12-29 | A kind of air blower carbon ring sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208397310U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454240A (en) * | 2019-08-28 | 2019-11-15 | 天津大学 | A kind of partial-air admission axial-flow type supercritical carbon dioxide turbo-expander |
| CN110454237A (en) * | 2019-08-28 | 2019-11-15 | 天津大学 | A kind of supercritical carbon dioxide turbo-expander multistage carbocyclic ring labyrinth seal structure |
| CN113107896A (en) * | 2021-05-08 | 2021-07-13 | 唐山市环保机械工程有限公司 | Nondestructive efficient sealing device and method for centrifugal blower or centrifugal compressor |
-
2017
- 2017-12-29 CN CN201721888859.6U patent/CN208397310U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454240A (en) * | 2019-08-28 | 2019-11-15 | 天津大学 | A kind of partial-air admission axial-flow type supercritical carbon dioxide turbo-expander |
| CN110454237A (en) * | 2019-08-28 | 2019-11-15 | 天津大学 | A kind of supercritical carbon dioxide turbo-expander multistage carbocyclic ring labyrinth seal structure |
| CN113107896A (en) * | 2021-05-08 | 2021-07-13 | 唐山市环保机械工程有限公司 | Nondestructive efficient sealing device and method for centrifugal blower or centrifugal compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208397310U (en) | A kind of air blower carbon ring sealing structure | |
| CN202789590U (en) | Novel centrifugal blower applicable to delivering special gases | |
| CN209041569U (en) | A kind of cryogenic pump combination sealing arrangement | |
| CN102364117A (en) | Combined shaft end seal | |
| CN2764979Y (en) | Draught fan sealing device | |
| CN203857059U (en) | Novel stop valve | |
| CN110285219B (en) | High-efficiency double zero-leakage floating ring sealing device | |
| CN103629357B (en) | The sealing mechanism of vane type rotary valve | |
| CN207454771U (en) | A kind of import high negative pressure turbine composite seal device | |
| CN208503482U (en) | A kind of Airlessly sealed device of high-speed main spindle case labyrinth type of multi-line cutting machine | |
| CN202012501U (en) | Combined type shaft end seal | |
| CN206175295U (en) | For continuous wind tunnel fan turbine axle head composite seal structure | |
| CN205349835U (en) | Single -stage high speed centrifugation formula air -blower magnetic fluid seal structure | |
| CN203384379U (en) | Air-flowing type shaft sealing device | |
| CN203374482U (en) | Framework sealing assembly | |
| CN203892561U (en) | Shaft end sealing device for draught fan conveying high-temperature gas containing CO | |
| CN208712880U (en) | A kind of machine tool chief axis with sealing structure | |
| CN205592146U (en) | Single -stage single -suction centrifugal pump | |
| CN206458829U (en) | A kind of rotary shaft labyrinth type gas sealing mechanism | |
| CN207093403U (en) | A kind of damping carbon dioxide centrifugal compressor | |
| CN205559798U (en) | Blower rotor and stator axle nitrogen gas seal device | |
| CN104896098A (en) | Sealing structure for rotating part | |
| CN201057272Y (en) | Gas sealing mechanism of bearing inner cover | |
| CN204922005U (en) | Pivot terminal surface gas tight sealing | |
| CN203560148U (en) | Sealing structure of sand pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |