CN218669922U - Centrifugal compressor impeller inlet flow guide locking device - Google Patents
Centrifugal compressor impeller inlet flow guide locking device Download PDFInfo
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- CN218669922U CN218669922U CN202222691840.XU CN202222691840U CN218669922U CN 218669922 U CN218669922 U CN 218669922U CN 202222691840 U CN202222691840 U CN 202222691840U CN 218669922 U CN218669922 U CN 218669922U
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- impeller
- centrifugal compressor
- locking device
- locking
- inducer
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Abstract
The utility model provides a centrifugal compressor impeller import water conservancy diversion locking device belongs to centrifugal compressor technical field. It is including the retaining member that is used for locking the impeller, the retaining member be close to the air inlet side one side of impeller and have the water conservancy diversion portion that can prevent to produce the air current stagnation phenomenon because of the air current erodees impeller import terminal surface, the retaining member keep away from impeller air inlet side one side and have the connecting portion that is used for connecting the compressor shaft. The retaining member can realize the locking to the impeller, and the retaining member passes through connecting portion and compressor shaft fixed, and the smooth transition of air current when the impeller side of admitting air is admitted air can be realized to water conservancy diversion portion to change the current situation that the air current directly erodees impeller air inlet terminal surface, thereby prevent the air current stagnation phenomenon.
Description
Technical Field
The utility model belongs to the technical field of centrifugal compressor, a centrifugal compressor impeller import water conservancy diversion locking device is related to.
Background
With the development of energy conservation and emission reduction requirements in various industrial fields, the centrifugal compressor is increasingly required in the market. The product adopts a three-dimensional flow centrifugal impeller with air inlet at the shaft end and radial exhaust as a core component, and the impeller is mostly locked by adopting a common hexagon nut or round nut. Because the working speed is high, the gas flow and the flow velocity are high, the traditional locking mode can cause the gas flow to scour the end face of the inlet of the impeller and form a certain gas flow stagnation phenomenon. Therefore, a specific inlet flow guiding locking device needs to be developed and designed for the centrifugal compressor impeller with high rotating speed, high gas flow and high flow speed, so as to prevent the gas flow stagnation phenomenon and ensure the normal and stable operation of the compressor.
In order to overcome the defects of the prior art, various solutions are proposed through continuous exploration, for example, a chinese patent discloses an impeller inlet guide structure of a multistage centrifugal blower or a multistage centrifugal compressor [ application number: 201010508522.4] comprises a reflux device, an impeller, a shaft sleeve, a reflux device cover plate, an impeller wheel cover, a wheel disc, an impeller blade inlet part and a reflux device blade outlet part; it is characterized by that in the air flow channel formed from reflux device, impeller and shaft sleeve and used for making air flow from upper stage to lower stage a flow-guiding ring is set, but said problem also exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the above-mentioned problem, a centrifugal compressor impeller import water conservancy diversion locking device is provided.
In order to achieve the above purpose, the utility model adopts the following technical proposal:
the utility model provides a centrifugal compressor impeller import water conservancy diversion locking device, is including the retaining member that is used for locking the impeller, the retaining member be close to air inlet side one side of impeller and have the water conservancy diversion portion that can prevent to produce the air current stagnation phenomenon because of the air current erodees impeller inlet terminal surface, the retaining member keep away from impeller air inlet side one side and have the connecting portion that are used for connecting the compressor axle.
The utility model discloses in, the retaining member can realize the locking to the impeller, and the retaining member passes through connecting portion and compressor shaft fixed, and the smooth transition of air current when the impeller side of admitting air can be realized to water conservancy diversion portion to change the current situation that the air current directly erodees impeller air inlet terminal surface, thereby prevent the air current stagnation phenomenon.
In foretell centrifugal compressor impeller import water conservancy diversion locking device, the retaining member include location portion, water conservancy diversion portion and connecting portion be located the both ends of location portion, the external diameter of location portion the same with the shaft hole aperture of impeller and fixed through transition fit with the impeller, water conservancy diversion portion on still be equipped with supplementary locking structure. The positioning portion is in transition fit with the impeller, the impeller can be fixed under the action of the device and the impeller which are coaxial, and the auxiliary locking structure can be matched with a locking tool to lock the positioning portion and the impeller.
In the above centrifugal compressor impeller inlet flow guiding and locking device, the auxiliary locking structure includes a plurality of locking tool holes disposed on the flow guiding portion. The locking tool hole is matched with a locking tool to realize the locking of the positioning part and the impeller.
In the centrifugal compressor impeller inlet diversion locking device, the plurality of locking tool holes are arranged along the circumferential direction of the diversion part. The advantage that a plurality of locking tool holes set up along circumference lies in, no matter the angle when water conservancy diversion portion installs how, the homoenergetic is one towards the locking tool hole of top or oblique top to can conveniently cooperate locking tool to fix the impeller to the locating hole on, during specific operation, insert locking tool to the locking tool hole, apply certain moment to locking tool and just can be with location portion chucking in the shaft hole of impeller.
In the centrifugal compressor impeller inlet flow guide locking device, the positioning part, the flow guide part and the connecting part are integrally arranged.
In the centrifugal compressor impeller inlet flow guide locking device, the outer surface of the flow guide part is smooth and is in a curve shape. The guide part with the smooth and curved outer surface can guide the inlet airflow of the compressor to the working blades of the impeller through the transition characteristic of a smooth curve, so that the airflow is prevented from directly washing the end face of the impeller.
In the above centrifugal compressor impeller inlet flow guiding and locking device, the outer surface of the flow guiding part comprises an elliptic curve, a perfect circle curve and an aerodynamic spline curve.
In the centrifugal compressor impeller inlet diversion locking device, the cross section of the diversion part is circular and is externally connected, and the cross section of the diversion part is gradually increased from one side far away from the impeller to one side close to the impeller, and the connection part of the diversion part and the impeller is flush.
In the centrifugal compressor impeller inlet flow guiding and locking device, the connecting part is provided with external threads and is in threaded connection with the compressor shaft.
In the centrifugal compressor impeller inlet diversion locking device, the direction of the external thread on the connecting part is opposite to the rotation direction of the impeller. The direction of the external thread is opposite to the rotating direction of the impeller, and the effects of reliable connection and looseness prevention can be achieved.
Compared with the prior art, the utility model has the advantages of:
1. the retaining member can realize the locking to the impeller, and the retaining member passes through connecting portion and compressor shaft fixed, and the smooth transition of air current when the impeller side of admitting air is admitted air can be realized to water conservancy diversion portion to change the current situation that the air current directly erodees impeller air inlet terminal surface, thereby prevent the air current stagnation phenomenon.
2. The positioning portion is in transition fit with the impeller, the impeller can be fixed under the action of the device and the impeller, and the auxiliary locking structure can be matched with a locking tool to lock the positioning portion and the impeller.
3. The guide part with the smooth and curved outer surface can guide the inlet airflow of the compressor to the working blades of the impeller through the transition characteristic of a smooth curve, so that the airflow is prevented from directly scouring the end face of the impeller.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
In the figure, an impeller 1, a locking piece 2, a flow guide part 3, a connecting part 4, a positioning part 5, an auxiliary locking structure 6 and a locking tool hole 7 are shown.
Detailed Description
As shown in fig. 1, the centrifugal compressor impeller inlet diversion locking device comprises a locking member 2 for locking an impeller 1, wherein a diversion part 3 capable of preventing airflow stagnation caused by scouring of airflow on the inlet end face of the impeller 1 is arranged on one side of the locking member 2 close to the air inlet side of the impeller 1, and a connecting part 4 for connecting a compressor shaft is arranged on one side of the locking member 2 far away from the air inlet side of the impeller 1.
The utility model discloses in, retaining member 2 can realize the locking to the impeller, and the retaining member passes through connecting portion and compressor shaft fixed, and the smooth transition of air current when the impeller side of admitting air can be realized to water conservancy diversion portion 3 to change the current situation that the air current directly erodeed impeller air inlet terminal surface, thereby prevent the air current stagnation phenomenon.
Specifically speaking, retaining member 2 includes location portion 5, water conservancy diversion portion 3 and connecting portion 4 be located the both ends of location portion 5, the external diameter of location portion 5 the same and fixed through transition fit with impeller 1's shaft hole aperture, water conservancy diversion portion 3 on still be equipped with supplementary locking structure 6. The positioning portion is in transition fit with the impeller, the impeller can be fixed under the action of the device and the impeller which are coaxial, and the auxiliary locking structure can be matched with a locking tool to lock the positioning portion and the impeller.
It will be appreciated by those skilled in the art that the transition fit may be an interference fit or a clearance fit.
In particular, the secondary locking structure 6 comprises a number of locking tool holes 7 provided in the flow guide 3. The locking tool hole 7 is matched with a locking tool to realize the locking of the positioning part and the impeller.
Preferably, as shown in connection with fig. 1, several locking tool holes 7 are provided circumferentially along the flow guide 3. The advantage that a plurality of locking tool hole 7 set up along circumference lies in, no matter the angle when water conservancy diversion portion installs how, the homoenergetic is one towards the locking tool hole of top or oblique top to can conveniently cooperate locking tool to fix the impeller to the locating hole on, during specific operation, insert locking tool to the locking tool hole, apply certain moment to locking tool and just can be with location portion chucking in the shaft hole of impeller.
Preferably, the positioning part 5, the flow guide part 3 and the connection part 4 are integrally provided.
Preferably, as shown in connection with fig. 1, the outer surface of the flow guide 3 is smooth and curved. The guide part 3 with smooth and curved outer surface can guide the inlet airflow of the compressor to the working blade of the impeller through the transition characteristic of a smooth curve, thereby preventing the airflow from directly washing the end surface of the impeller.
Specifically, the outer surface of the flow guide portion 3 includes an elliptic curve, a perfect circular curve, and an aerodynamic spline curve.
Specifically, the cross section of the guide part 3 is circular and is externally connected, and the cross section is gradually increased from one side far away from the impeller 1 to one side close to the impeller 1, and the connection part of the guide part 3 and the impeller 1 is flush.
Specifically, the connecting portion 4 has an external thread and the connecting portion 4 is threadedly connected to the compressor shaft, and the external thread of the connecting portion 4 is opposite to the rotation direction of the impeller 1. The direction of the external thread is opposite to the rotating direction of the impeller 1, and the effects of reliable connection and looseness prevention can be achieved.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although the impeller 1, the locker 2, the deflector 3, the connecting portion 4, the positioning portion 5, the auxiliary locking structure 6, the locking tool hole 7, etc., are used more frequently herein, these terms are used only for the purpose of more conveniently describing and explaining the essence of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. The utility model provides a centrifugal compressor impeller import water conservancy diversion locking device, is including retaining member (2) that are used for locking impeller (1), its characterized in that, retaining member (2) be close to air inlet side one side of impeller (1) and have water conservancy diversion portion (3) that can prevent to produce the air current stagnation phenomenon because of the air current erodees impeller (1) inlet terminal surface, retaining member (2) keep away from impeller (1) air inlet side one side and have connecting portion (4) that are used for connecting the compressor shaft.
2. The centrifugal compressor impeller inlet flow guiding and locking device as claimed in claim 1, wherein the locking member (2) comprises a positioning portion (5), the flow guiding portion (3) and the connecting portion (4) are located at two ends of the positioning portion (5), the outer diameter of the positioning portion (5) is the same as the bore diameter of the shaft hole of the impeller (1) and is fixed with the impeller (1) through transition fit, and the flow guiding portion (3) is further provided with an auxiliary locking structure (6).
3. The centrifugal compressor impeller inducer inlet guide flow locking device according to claim 2, characterized in that the auxiliary locking structure (6) comprises a plurality of locking tool holes (7) arranged on the guide portion (3).
4. Centrifugal compressor impeller inducer inlet guide flow locking device according to claim 3, characterized in that a number of locking tool holes (7) are provided circumferentially along the guide (3).
5. The centrifugal compressor impeller inlet flow guiding and locking device as claimed in any one of claims 2 to 4, wherein the positioning portion (5), the flow guiding portion (3) and the connecting portion (4) are integrally formed.
6. The centrifugal compressor impeller inducer inlet guide locking device according to any of claims 1-4, characterized in that the outer surface of the guide part (3) is smooth and curved.
7. The centrifugal compressor impeller inducer intake inducer locking device of claim 6, wherein the inducer (3) outer surface comprises an elliptical curve, a perfect circle curve, and an aerodynamic spline curve.
8. The centrifugal compressor impeller inlet flow guiding locking device according to claim 6, wherein the cross section of the flow guiding part (3) is circular and is externally connected and gradually increased from one side far away from the impeller (1) to one side close to the impeller (1), and the connection part of the flow guiding part (3) and the impeller (1) is flush.
9. Centrifugal compressor impeller inducer intake inducer locking device according to any of claims 1-4, characterized in that the connecting part (4) is externally threaded and the connecting part (4) is screwed to the compressor shaft.
10. Centrifugal compressor impeller inducer locking device according to claim 9, characterized in that the direction of the external thread on the connection part (4) is opposite to the direction of rotation of the impeller (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222691840.XU CN218669922U (en) | 2022-10-12 | 2022-10-12 | Centrifugal compressor impeller inlet flow guide locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222691840.XU CN218669922U (en) | 2022-10-12 | 2022-10-12 | Centrifugal compressor impeller inlet flow guide locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218669922U true CN218669922U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222691840.XU Active CN218669922U (en) | 2022-10-12 | 2022-10-12 | Centrifugal compressor impeller inlet flow guide locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218669922U (en) |
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2022
- 2022-10-12 CN CN202222691840.XU patent/CN218669922U/en active Active
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