CN207423523U - For the conversion sleeve of impeller test in a kind of overspeed test bench - Google Patents
For the conversion sleeve of impeller test in a kind of overspeed test bench Download PDFInfo
- Publication number
- CN207423523U CN207423523U CN201721420218.8U CN201721420218U CN207423523U CN 207423523 U CN207423523 U CN 207423523U CN 201721420218 U CN201721420218 U CN 201721420218U CN 207423523 U CN207423523 U CN 207423523U
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- China
- Prior art keywords
- impeller
- cylindrical portion
- conversion sleeve
- hole
- test
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Abstract
The utility model discloses the conversion sleeves that impeller test is used in a kind of overspeed test bench, including being integrally formed ground round platform portion and cylindrical portion, the cylindrical portion is placed in the circle centre position in round platform portion, the outer circle wall in round platform portion raises up and forms cricoid radial positioning side, limiting slot is formed between radial positioning side and cylindrical portion, through hole is equipped on the axis direction of cylindrical portion, the side wall of cylindrical portion is equipped with threaded hole；Threaded hole and through hole connect.During impeller hypervelocity, when impeller and temperature of rotor rise, the swell increment of boss portion is bigger than the swell increment on radial positioning side in conversion sleeve in impeller, therefore the cooperation between impeller and conversion sleeve is even closer, reduces out-of-balance force.
Description
Technical field：
The utility model is related to the conversion sleeve of impeller test is used in a kind of overspeed test bench.
Background technology：
The outer circle of conversion sleeve and the endoporus of impeller are clearance fits in existing overspeed test bench, in impeller hypervelocity process
In, temperature rises, and because the coefficient of thermal expansion of material is different, the gap of impeller endoporus and conversion sleeve outer circle continues to increase, uneven
Power also increases, and enhances the rotor oscillation to run at high speed.
Utility model content：
The utility model is provided and is used in a kind of overspeed test bench to solve the above-mentioned problems of the prior art
The conversion sleeve of impeller test.
There is technical solution used by the utility model：For the conversion sleeve of impeller test, bag in a kind of overspeed test bench
It includes integrated molding ground round platform portion and cylindrical portion, the cylindrical portion is placed in the circle centre position in round platform portion, the outer circle wall in round platform portion is upward
Protrusion simultaneously forms cricoid radial positioning side, limiting slot is formed between radial positioning side and cylindrical portion, in the axle center of cylindrical portion
Direction is equipped with through hole, and the side wall of cylindrical portion is equipped with threaded hole；Threaded hole and through hole connect.
Further, two rotation stop platform parts are arranged on the outer circle wall of the cylindrical portion, are set in rotation stop platform part
Fluted portion, the concave part connect with through hole.
Further, the conversion sleeve, which is adopted, is made of a steel.
The utility model has the advantages that：During impeller hypervelocity, when impeller and temperature of rotor rise, impeller
The swell increment of middle boss portion is bigger than the swell increment on radial positioning side in conversion sleeve, therefore the cooperation between impeller and conversion sleeve is more
Closely, out-of-balance force is reduced.
Description of the drawings：
Fig. 1 is the utility model structure chart.
Fig. 2 is the utility model application structure figure.
Specific embodiment：
The utility model will be further described below with reference to the accompanying drawings.
As shown in Figure 1, the utility model is disclosed for the conversion sleeve of impeller test in a kind of overspeed test bench, including one
Shaping ground round platform portion 211 and cylindrical portion 212, cylindrical portion 212 are placed in the circle centre position in round platform portion 211, the outer circle wall in round platform portion 211
It raises up and forms cricoid radial positioning side 213, limiting slot is formed between radial positioning side 213 and cylindrical portion 212
210, through hole 214 is equipped on the axis direction of cylindrical portion 212, the side wall of cylindrical portion 212 is equipped with threaded hole 215, threaded hole
215 and through hole 214 connect.
Two rotation stop platform parts 216 are arranged on the outer circle wall of the cylindrical portion 212 of conversion sleeve, in rotation stop platform part
216 are equipped with concave part 217, which connects with through hole 214.
With reference to Fig. 2, when in use, conversion sleeve is set in the top of rotor 13, and holding screw 24 passes through conversion sleeve and screw thread
It is connected on rotor 13, impeller 22 is sheathed on conversion sleeve, and the boss portion 221 of the lower face of impeller 22 is placed in the limit of conversion sleeve
In the slot 210 of position, the cylindrical portion 212 of conversion sleeve is contacted on the step surface in 22 top bar hole of impeller.Compression bar 23 is along rotor 13
Axis direction sequentially passes through impeller 22 and conversion sleeve and is threaded on rotor 13, and impeller 22 is pressed on conversion sleeve.
Conversion sleeve, which is adopted, to be made of a steel, and impeller 22, which is adopted, to be formed from aluminium.
When in use, when impeller 22 and 13 temperature of rotor rise, the swell increment of boss portion 221 is than in conversion sleeve in impeller 22
The swell increment on radial positioning side 213 is big, therefore the cooperation between impeller 22 and conversion sleeve is even closer, reduces out-of-balance force.
Conversion sleeve is equipped with rotation stop platform part 216 for anti-torsion, connects holding screw 24 in 215 internal thread of threaded hole, uses
In the connection of rotor and conversion sleeve.The purpose of milling concave part 217 is in rotation stop platform part 216：Because rotation stop is milled out on conversion sleeve
After platform part 216, the minimum wall thickness (MINI W.) that can cause 214 position of through hole is only 0.1mm, for the sake of installing, by way of groove milling
Remove the relatively thin wall of rotation stop platform part 216.Cylindrical portion 212 is integrally formed in the utility model, and the upper surface of cylindrical portion 212 can
To ensure intensity during 212 anti-torsion of cylindrical portion, it is not easy torsion and deforms.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, several improvement can also be made on the premise of the utility model principle is not departed from, these improvement also should be regarded as
The scope of protection of the utility model.
Claims (3)
1. for the conversion sleeve of impeller test in a kind of overspeed test bench, it is characterised in that：Including being integrally formed ground round platform portion
(211) and cylindrical portion (212), the cylindrical portion (212) are placed in the circle centre position of round platform portion (211), the excircle of round platform portion (211)
Wall raises up and forms cricoid radial positioning side (213), is formed between radial positioning side (213) and cylindrical portion (212)
Limiting slot (210), is equipped with through hole (214) on the axis direction of cylindrical portion (212), and the side wall of cylindrical portion (212) is equipped with spiral shell
Pit (215)；Threaded hole (215) and through hole (214) connect.
2. for the conversion sleeve of impeller test in overspeed test bench as described in claim 1, it is characterised in that：The cylindrical portion
(212) two rotation stop platform parts (216) are arranged on outer circle wall, concave part is equipped in rotation stop platform part (216)
(217), which connects with through hole (214).
3. for the conversion sleeve of impeller test in overspeed test bench as described in claim 1, it is characterised in that：The conversion sleeve
It adopts and is made of a steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420218.8U CN207423523U (en) | 2017-10-30 | 2017-10-30 | For the conversion sleeve of impeller test in a kind of overspeed test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420218.8U CN207423523U (en) | 2017-10-30 | 2017-10-30 | For the conversion sleeve of impeller test in a kind of overspeed test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207423523U true CN207423523U (en) | 2018-05-29 |
Family
ID=62309362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721420218.8U Active CN207423523U (en) | 2017-10-30 | 2017-10-30 | For the conversion sleeve of impeller test in a kind of overspeed test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207423523U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677469A (en) * | 2017-10-30 | 2018-02-09 | 南京磁谷科技有限公司 | It is used for the conversion sleeve of impeller test in a kind of overspeed test bench |
-
2017
- 2017-10-30 CN CN201721420218.8U patent/CN207423523U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677469A (en) * | 2017-10-30 | 2018-02-09 | 南京磁谷科技有限公司 | It is used for the conversion sleeve of impeller test in a kind of overspeed test bench |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 99, Jinxin Middle Road, Jiangning District, Nanjing City, Jiangsu Province Patentee after: Nanjing Cigu Technology Co., Ltd Address before: Nine No. 211102 Bamboo Road, Jiangning Development Zone, Nanjing, Jiangsu, 100 Patentee before: NANJING CIGU LIMITED Corp. |
|
| CP03 | Change of name, title or address |