CN203756611U - Diffuser pre-tightening structure suitable for pressurizer - Google Patents
Diffuser pre-tightening structure suitable for pressurizer Download PDFInfo
- Publication number
- CN203756611U CN203756611U CN201420185013.6U CN201420185013U CN203756611U CN 203756611 U CN203756611 U CN 203756611U CN 201420185013 U CN201420185013 U CN 201420185013U CN 203756611 U CN203756611 U CN 203756611U
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- China
- Prior art keywords
- diffuser
- section
- gap
- shaped
- wheel cover
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- Expired - Fee Related
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Abstract
The utility model discloses a diffuser pre-tightening structure suitable for a pressurizer. A circular ring-shaped diffuser and a blade wheel cover are mounted on an air compressor shell after being fastened through screws; the diffuser pre-tightening structure is characterized in that a gap K1 with height smaller than the diameter of the section of an O-shaped sealing ring is formed in the root of the section of the circular ring-shaped diffuser towards the direction of the blade wheel cover; the section of the gap K1 can be transversely rectangular or square; a gap K2 is formed in the section of the blade wheel cover towards the direction of the diffuser; the gap K2 is vertically rectangular. After the diffuser and the blade wheel cover are mutually positioned, the O-shaped ring is mounted to adjust the axial drifting compensation amount of the diffuser; during mounting, the air compressor shell is tightly attached to the contact surface of a gas discharging shell; after being compressed in the height direction, the O-shaped ring is transversely expanded to enable the top of a blade of the diffuser to be always in tight fit with a middle barrier wall body and the contact surface of the gas discharging shell; therefore, loss caused by gas leakage (drifting) is avoided, and the working efficiency of an air compressor is improved. By the adoption of an elastic adjustment mechanism, the processing precision of a part can be reduced, so that the processing cost is lowered.
Description
Technical field
The utility model relates to turbosupercharger.
Background technique
Diffuser is arranged in the compressor casing of pressurized machine, its effect is that the kinetic energy of compressor impeller exit gas is converted to static energy, Diffuser conventionally adopts and rigidly fixes the mode of structure being connected with impeller chimney, after fastening, be arranged on together on compressor casing, during installation, diffuser vane top and midfeather body and fuel gas exhaust shell surface of contact there will be interference or gap.During interference, the faying surface of compressor casing and fuel gas exhaust shell there will be gap, causes gas leak phenomenon; When gapped, Diffuser can vibrate and air-flow is scurried out from vane tip gap location,, the appearance in gap can cause compressor efficiency to reduce.
Summary of the invention
The problems referred to above that exist for solving prior art, the utility model will design a kind of faying surface that both can prevent compressor casing and fuel gas exhaust shell phenomenon that leaks air, and can prevent that again the Diffuser of the pressurized machine that Diffuser vibration and air-flow are scurried out from vane tip gap location from holding out against structure.
To achieve these goals, the utility model is designed following technological scheme: a kind of Diffuser that is applicable to pressurized machine holds out against structure, ring Diffuser and impeller chimney are with being arranged on after screw fastening on compressor casing, its feature is: the root in ring Diffuser cross section is provided with breach K1 towards the direction of impeller chimney, and the height of this breach K1 is less than the diameter in O RunddichtringO cross section; Breach K1 is horizontal rectangular cross section, can be also square sectional.And the root of impeller chimney circular crosssection is provided with cross section towards the direction of Diffuser, be vertical rectangular breach K2.
During the utility model work, by O type circle, regulate the axial position of Diffuser, guarantee that diffuser vane top and midfeather body, fuel gas exhaust shell fit tightly all the time.
Compared with prior art, the utlity model has following beneficial effect:
1, owing to not being to be fastenedly connected mode between Diffuser of the present utility model and impeller chimney, behind Diffuser and impeller chimney seam location, mounting O-shaped rings regulates Diffuser axial float compensation rate, under the prerequisite fitting tightly at compressor casing and the surface of contact that fires row's shell during installation, the effect of the elastic force of O type circle fits tightly diffuser vane top and midfeather body, fuel gas exhaust shell surface of contact all the time.Can effectively prevent the faying surface gas leakage of diffuser vane top gas blowby and compressor casing and fuel gas exhaust shell, stop the loss of leakage (altering) gas, Reliable guarantee compressor efficiency.
2, because the utility model has adopted O type circle, carry out the axial position of flexible adjustment Diffuser, can reduce the machining accuracy of impeller chimney, Diffuser thickness, reduce processing cost.
Accompanying drawing explanation
6, the total accompanying drawing of the utility model, wherein:
Fig. 1 is a kind of structural representation of prior art, expression be the upper half part in Diffuser cross section, lower half portion symmetrical with it omitted and do not drawn.Following Fig. 3, Fig. 5 technique of painting are identical.There is gap gas leakage situation in the structure that rigidly fixes that this figure demonstrates Diffuser.
Fig. 2 is the I place partial enlarged drawing of Fig. 1.
Fig. 3 is the structural representation of another kind of prior art, demonstrates Diffuser and rigidly fixes structure and occur vane tip gas blowby situation.
Fig. 4 is the II place partial enlarged drawing of Fig. 3.
Fig. 5 is structural representation of the present utility model.
Fig. 6 is the III place partial enlarged drawing of Fig. 5.
In figure: 1, fuel gas exhaust shell, 2, compressor casing, 3, Diffuser, 4, impeller chimney, 5, O type circle, 6, screw.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further.
Diffuser 3 conventionally adopts and rigidly fixes mode of structure, is arranged on compressor casing 2 together with after Diffuser 3 is fastening by screw 6 with impeller chimney 4.During installation can there is interference or gap with midfeather body, fuel gas exhaust shell 1 surface of contact in the vane tip of Diffuser 3.Fig. 1, Fig. 2 demonstration, during interference, compressor casing 2 there will be gap J1 with the faying surface of combustion row shell, causes gas leakage F phenomenon.Fig. 3, Fig. 4 show, Diffuser 3 meeting vibrations during gapped J2, and air-flow F can scurry out from vane tip gap location.Two kinds of situations all cause compressor efficiency to reduce.
Structure of the present utility model can be with reference to Fig. 5 and Fig. 6.
After ring Diffuser 3 is fastening with impeller chimney 4 use screws 6, be arranged on compressor casing 2.It has following characteristics: the root in ring Diffuser 3 cross sections is provided with breach K1 towards the direction of impeller chimney 4.Breach K1 can be that horizontal rectangular cross section can be also square sectional.O type circle 5 is enclosed within the annular breach K1 of impeller chimney 4.The height of breach K1 is less than the diameter in O RunddichtringO 5 cross sections.And the circular crosssection of impeller chimney 4 is provided with breach K2 towards the root of Diffuser 3 directions.Breach K2 is vertical rectangular cross section.Diffuser 3 is contained in the breach K2 place of impeller chimney 4, does not need fastening.Diffuser 3 can move axially.Under the prerequisite fitting tightly at compressor casing 2 and the surface of contact that fires row's shell during installation, by O type circle 5, at the compressed rear lateral expansion of short transverse, come and regulate the axial position of Diffuser 3, under the effect of certain elastic force, guarantee that Diffuser 3 vane tips and midfeather body, fuel gas exhaust shell 1 surface of contact Q2, Q3 place fit tightly all the time, therefore above-mentioned two kinds of gas leakage and gas blowby situation all there will not be.Adopt O type circle 5 at the come axial position of flexible adjustment Diffuser 3 of the compressed rear lateral expansion of short transverse, can also reduce the machining accuracy of impeller chimney 4, Diffuser 3 thickness, cut down finished cost.
The utility model has overcome the shortcoming of existing structure, can effectively prevent that Diffuser 3 vane tip gas blowbies and compressor casing 2 and the faying surface of combustion row shell from leaking gas, and has stopped leakage blow-by loss, and the working efficiency of gas compressor is greatly improved.
Claims (3)
1. a Diffuser that is applicable to pressurized machine holds out against structure, after ring Diffuser (3) is fastening with screw (6) with impeller chimney (4), be arranged on compressor casing (2), it is characterized in that: the root in described ring Diffuser (3) cross section is provided with breach K1 towards the direction of impeller chimney (4), and the height of this breach K1 is less than the diameter in O RunddichtringO (5) cross section; And the root of described impeller chimney (4) circular crosssection is provided with cross section towards the direction of Diffuser (3), be vertical rectangular breach K2.
2. the Diffuser that is applicable to pressurized machine according to claim 1 holds out against structure, it is characterized in that: the breach K1 that the root in described ring Diffuser (3) cross section is provided with towards the direction of impeller chimney (4) is horizontal rectangular cross section.
3. the Diffuser that is applicable to pressurized machine according to claim 1 holds out against structure, it is characterized in that: the breach K1 that the root in described ring Diffuser (3) cross section is provided with towards the direction of impeller chimney (4) is square sectional.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185013.6U CN203756611U (en) | 2014-04-14 | 2014-04-14 | Diffuser pre-tightening structure suitable for pressurizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420185013.6U CN203756611U (en) | 2014-04-14 | 2014-04-14 | Diffuser pre-tightening structure suitable for pressurizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203756611U true CN203756611U (en) | 2014-08-06 |
Family
ID=51251892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420185013.6U Expired - Fee Related CN203756611U (en) | 2014-04-14 | 2014-04-14 | Diffuser pre-tightening structure suitable for pressurizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203756611U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104847695A (en) * | 2015-05-13 | 2015-08-19 | 张澄宇 | Stage-middle air bleeding type air compressor based on micro-turbine jet engine |
| CN105822568A (en) * | 2015-01-23 | 2016-08-03 | 哈米尔顿森德斯特兰德公司 | Compressor diffuser and shroud for a motor driven compressor |
-
2014
- 2014-04-14 CN CN201420185013.6U patent/CN203756611U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822568A (en) * | 2015-01-23 | 2016-08-03 | 哈米尔顿森德斯特兰德公司 | Compressor diffuser and shroud for a motor driven compressor |
| CN105822568B (en) * | 2015-01-23 | 2019-06-14 | 哈米尔顿森德斯特兰德公司 | Compressor diffuser and shield for motor driven compressor |
| CN104847695A (en) * | 2015-05-13 | 2015-08-19 | 张澄宇 | Stage-middle air bleeding type air compressor based on micro-turbine jet engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20150414 |
|
| EXPY | Termination of patent right or utility model |