CN204371433U - With the exhaust-gas turbocharger pressure shell of bypass flow channel - Google Patents
With the exhaust-gas turbocharger pressure shell of bypass flow channel Download PDFInfo
- Publication number
- CN204371433U CN204371433U CN201420785286.4U CN201420785286U CN204371433U CN 204371433 U CN204371433 U CN 204371433U CN 201420785286 U CN201420785286 U CN 201420785286U CN 204371433 U CN204371433 U CN 204371433U
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- China
- Prior art keywords
- suction port
- pressure shell
- flow channel
- bypass flow
- tonifying
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- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Abstract
The utility model belongs to field of turbochargers, specifically a kind of exhaust-gas turbocharger pressure shell with bypass flow channel.It comprises is located at suction port on pressure shell body and air outlet, several suction ports are provided with in the inner edge of suction port, the hole wall of the endoporus inner end of suction port is provided with tonifying Qi groove, the internal face of the interior outer end of hole of suction port is set to circular arc camber, suction port one end passes circular arc camber and forms gas returning port, the other end is communicated with tonifying Qi groove, and suction port, gas returning port and tonifying Qi groove form bypass flow channel.The utility model has the advantages that air-flow can circulate in bypass passageways when low flow rate condition, in case Zhichuan shake, also can suck air in passage when large discharge operating mode, obstruction is postponed; The fluency of air inlet is greatly improved, reduces and utter long and high-pitched sounds, serve the effect of silencer cover; Improve the reliability of pressurized machine work; Improve the assembly precision of turbosupercharger and working efficiency and corrosion resistance and water proof anti-soil performance.
Description
Technical field
The utility model belongs to field of turbochargers, specifically a kind of exhaust-gas turbocharger pressure shell with bypass flow channel.
Background technique
The high speed development of automotive industry brings day by day serious environmental pollution and energy shortage problem.Turbosupercharger plays conclusive effect in the usability improving motor and energy-saving and emission-reduction.The gas compressor of tradition not with bypass flow channel at the lower flow conditions, there is violent flow separation phenomenon in interior flow field, this unstable working state can cause compressor stall even to breathe heavily shake, directly causes efficiency and pressure ratio sharply to decline, severe life time reduction, even directly damages.And under high flow capacity operating mode, air inflow often cannot reach requirement, occur blocking delay phenomenon, this result also in the reduction of gas compressor working efficiency.Therefore, need on pressure shell, adopt bypass flow channel structure to improve this disadvantageous working state.In addition, there is angle of assembling in compressor housings and middle casing, and this angle is generally ensured by auxiliary mould, but its assembly precision is poor and efficiency is not high, and this solves this problem with regard to needing to carry out improvement in the configuration aspects of compressor housings.Traditional pressure shell suction port end face is for facing directly as shown in Figure 1, and high velocity air impacts and can rebound on end face 1 ', causes air turbulence and strong concussion, even causes and utter long and high-pitched sounds, have a strong impact on the normal work of gas compressor.
Model utility content
The utility model will solve breathes heavily airflow obstruction phenomenon under shake phenomenon, high flow capacity operating mode and assembly precision difference and inefficiency problem under gas compressor low discharge operating mode.
Have employed following technological scheme:
With the exhaust-gas turbocharger pressure shell of bypass flow channel, it comprises is located at suction port on pressure shell body and air outlet, several suction ports are provided with in the inner edge of suction port, the hole wall of the endoporus inner end of suction port is provided with tonifying Qi groove, the internal face of the interior outer end of hole of suction port is set to circular arc camber, suction port one end passes circular arc camber and forms gas returning port, and the other end is communicated with tonifying Qi groove, and suction port, gas returning port and tonifying Qi groove form bypass flow channel.
Described tonifying Qi groove and the angle of axis are 70 °.
The end of the perimeter wall of described suction port is provided with the locking step of circular arc convex type.
The end of the perimeter wall of described air outlet is provided with the locking step of circular arc convex type.
The right-hand member of described tonifying Qi groove is arranged on the position that compressor impeller cylndrical surface connects with arc surface.
The positioning spigot place of described pressure shell is provided with the locating stud for assembling.
Described pressure shell surface of shell is coated with one deck coating.
The utility model has the advantages that air-flow can circulate in bypass passageways when low flow rate condition, in case Zhichuan shake, also can suck air in passage when large discharge operating mode, obstruction is postponed; Compared with traditional, breathing heavily seismic ray can move 20-30% to small flow side, and choke line can expand 5-9% to large discharge side; The circular arc camber structure of above-mentioned pressure shell suction port inner edge plays guiding buffer function to the gas that suction air intake passage is about to enter compressor impeller, the fluency of air inlet is greatly improved, reduces and utter long and high-pitched sounds, serve the effect of silencer cover; The circular arc convex type step of above-mentioned pressure shell suction port outer rim and air outlet outer rim can prevent from coming off with the exhaust software of its connection, improves the reliability of pressurized machine work; Above-mentioned locating stud improves assembly precision and the working efficiency of turbosupercharger, and above-mentioned coating improves corrosion resistance and the water proof anti-soil performance of pressure shell housing.
Accompanying drawing explanation
Fig. 1 is the structural representation of pressurized machine pressure shell in prior art;
Fig. 2 is the utility model structural representation;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the sectional view of suction port;
Fig. 5 is the utility model close-up schematic view;
Fig. 6 is the operating diagram breathing heavily shake operating mode;
Fig. 7 is the operating diagram blocking operating mode;
Fig. 8 is the scheme of installation of the utility model and intermediate;
Fig. 9 is the side view of Fig. 8.
Embodiment
As Fig. 2, Fig. 3, shown in Fig. 4, with the exhaust-gas turbocharger pressure shell of bypass flow channel, it comprises is located at suction port a on pressure shell body A and air outlet b, several suction ports 1 are provided with in the inner edge of suction port a, the hole wall of the endoporus inner end of suction port a is provided with tonifying Qi groove 2, the internal face of the interior outer end of hole of suction port a is set to circular arc camber 4, suction port 1 one end passes circular arc camber and forms gas returning port 3, the other end is communicated with tonifying Qi groove 2, suction port 1, gas returning port 3 and tonifying Qi groove 2 form bypass flow channel, the circular arc camber 4 that these suction ports 1 are arranged on pressure shell suction port inner edge is formed the hole of circular array to axial, as shown in Figure 5, the position that the cylndrical surface c that the right-hand member of tonifying Qi groove 2 is arranged on compressor impeller e connects with arc surface d, tonifying Qi groove 2 is 70 ° with the angle of axis, the end of the perimeter wall of suction port a is provided with the locking step 5 of circular arc convex type, the end of the perimeter wall of air outlet b is provided with locking 7 of circular arc convex type, the positioning spigot place of pressure shell is provided with the locating stud 6 for assembling, pressure shell surface of shell is coated with one deck coating.
In the utility model, the suction port a air inlet inwall of pressure shell is set to circular arc camber 4 pattern, this structure plays guiding combing effect to air flow energy, when charge air flow is impacted after on end face 1 ', can enter in passage along circular arc camber 4, the fluency of air inlet is greatly improved, reduces and utter long and high-pitched sounds, serve the effect of silencer cover, locking step 5 and 7 can prevent from coming off with the exhaust software of its connection, improves the reliability of pressurized machine work.
As shown in Figure 6, in turbocharger air compressor working procedure, when breathing heavily shake operating mode, in bypass flow channel, air is by tonifying Qi groove 2, flows out through suction port 1 and gas returning port 3.Specific works process and principle are: bypass flow channel tonifying Qi groove 2 aspirates the gas in blade tip region, slotting position place, through suction port 1, are discharged by gas returning port 3.The pumping action of tonifying Qi groove 2 cross-notching position blade tip zone gas causes tip clearance leakage flow to be aspirated by tonifying Qi groove 2, the passage of leakage flow is blocked, and backflow enters compressor inlet, due to communicating of flowing in annular groove, achieve the flow uniformity of compressor inlet, eliminate passage shock; Backflow increases inlet flow rate, and blade inlet positive incidence is reduced, simultaneously the reduced pumping action gas compressor aditus laryngis back pressure of tonifying Qi groove 2, and adverse pressure gradient reduction, effectively inhibit the separation of blade surface boundary layer.
As shown in Figure 7, in blocking operating mode, in bypass passageways, air cooled via return air mouth 3, suction port 1, discharge from tonifying Qi groove 2.Gas returning port 3 makes flowing in entrance circumference communicate, thus compressor inlet flow uniformity is increased, and weakens entrance shock wave; The jet of tonifying Qi groove 2 makes negotiability strengthen, thus has expanded blocking border.But, not enough owing to closely blocking operating mode suction power, therefore the expansion of this bypass flow channel to blocking border is unobvious to the expansion of perf ormance.
As shown in Figure 8, Figure 9, the positioning port place of the gas compressor pressure shell body A stated, be provided with locating stud 6, on the assembling step B1 of intermediate B, be provided with positioning hole B2, during assembling, locating stud 6 coordinates with positioning hole B2, so just ensure that the setting angle of gas compressor pressure shell body A and intermediate B accurately, do not need auxiliary mould, also improve efficiency of assembling.
In addition, the outer surface of this compressor housings has the coating of a layer thickness about 5 μm, and this coating improves corrosion resistance and the water proof anti-soil performance of housing.
Claims (7)
1. be with the exhaust-gas turbocharger pressure shell of bypass flow channel, it comprises is located at suction port on pressure shell body and air outlet, it is characterized in that: in the inner edge of suction port, be provided with several suction ports, the hole wall of the endoporus inner end of suction port is provided with tonifying Qi groove, the internal face of the interior outer end of hole of suction port is set to circular arc camber, suction port one end passes circular arc camber and forms gas returning port, and the other end is communicated with tonifying Qi groove, and suction port, gas returning port and tonifying Qi groove form bypass flow channel.
2. the exhaust-gas turbocharger pressure shell of band bypass flow channel according to claim 1, is characterized in that: described tonifying Qi groove and the angle of axis are 70 °.
3. the exhaust-gas turbocharger pressure shell of band bypass flow channel according to claim 1 and 2, is characterized in that: the end of the perimeter wall of described suction port is provided with the locking step of circular arc convex type.
4. the exhaust-gas turbocharger pressure shell of band bypass flow channel according to claim 1 and 2, is characterized in that: the end of the perimeter wall of described air outlet is provided with the locking step of circular arc convex type.
5. the exhaust-gas turbocharger pressure shell of band bypass flow channel according to claim 1 and 2, is characterized in that: the right-hand member of described tonifying Qi groove is arranged on the position that compressor impeller cylndrical surface connects with arc surface.
6. the exhaust-gas turbocharger pressure shell of band bypass flow channel according to claim 1 and 2, is characterized in that: the positioning spigot place of described pressure shell is provided with the locating stud for assembling.
7. the exhaust-gas turbocharger pressure shell of band bypass flow channel according to claim 1 and 2, is characterized in that: described pressure shell surface of shell is coated with one deck coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420785286.4U CN204371433U (en) | 2014-12-12 | 2014-12-12 | With the exhaust-gas turbocharger pressure shell of bypass flow channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420785286.4U CN204371433U (en) | 2014-12-12 | 2014-12-12 | With the exhaust-gas turbocharger pressure shell of bypass flow channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371433U true CN204371433U (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420785286.4U Expired - Fee Related CN204371433U (en) | 2014-12-12 | 2014-12-12 | With the exhaust-gas turbocharger pressure shell of bypass flow channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371433U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500155A (en) * | 2014-12-12 | 2015-04-08 | 常州环能涡轮动力股份有限公司 | Exhaust gas turbocharger pressure shell with bypass flow path |
-
2014
- 2014-12-12 CN CN201420785286.4U patent/CN204371433U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500155A (en) * | 2014-12-12 | 2015-04-08 | 常州环能涡轮动力股份有限公司 | Exhaust gas turbocharger pressure shell with bypass flow path |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20171212 |