CN207423513U - The mounting structure of impeller in a kind of overspeed test bench - Google Patents
The mounting structure of impeller in a kind of overspeed test bench Download PDFInfo
- Publication number
- CN207423513U CN207423513U CN201721420068.0U CN201721420068U CN207423513U CN 207423513 U CN207423513 U CN 207423513U CN 201721420068 U CN201721420068 U CN 201721420068U CN 207423513 U CN207423513 U CN 207423513U
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- China
- Prior art keywords
- impeller
- conversion sleeve
- rotor
- threaded
- test bench
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Abstract
The utility model discloses a kind of mounting structures of impeller in overspeed test bench, including casing, stator and rotor, the stator is fixed in casing, rotor rotating support is in stator, and the top of rotor is stretched in outside casing, further include conversion sleeve, impeller, compression bar and holding screw, the conversion sleeve is set in the top of rotor, holding screw is through conversion sleeve and is threaded in rotor, impeller set is arranged on conversion sleeve, the axis direction of compression bar along rotor sequentially passes through impeller and conversion sleeve and is threaded on rotor, and impeller is pressed on conversion sleeve.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 a kind of mounting structures of impeller in 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 to provide impeller in a kind of overspeed test bench to solve the above-mentioned problems of the prior art
Mounting structure.
There is technical solution used by the utility model：The mounting structure of impeller in a kind of overspeed test bench, including casing,
Stator and rotor, the stator are fixed in casing, and rotor rotating support is in stator, and the top of rotor is stretched in outside casing,
Conversion sleeve, impeller, compression bar and holding screw are further included, the conversion sleeve is set in the top of rotor, and holding screw passes through conversion
It covers and is threaded in rotor, impeller set is arranged on conversion sleeve, and the axis direction of compression bar along rotor sequentially passes through impeller and turns
It changes and covers and be threaded on rotor, and impeller is pressed on conversion sleeve；
The conversion sleeve includes being integrally formed ground round platform portion and cylindrical portion, the cylindrical portion are 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, is formed between radial positioning side and cylindrical portion limited
Position slot, is equipped with through hole on the axis direction of cylindrical portion, and the side wall of cylindrical portion is equipped with threaded hole；
The circle centre position of the lower face of the impeller is equipped with boss portion, and stepped hole, impeller are equipped on the axis direction of impeller
Boss portion be placed in the limiting slot of conversion sleeve, the cylindrical portion of conversion sleeve is contacted on the step surface of stepped hole.
Further, two rotation stop platform parts are arranged on the outer circle wall of the cylindrical portion of the conversion sleeve, are put down in rotation stop
Platform portion is equipped with concave part, which connects with through hole.
Further, the compression bar includes pressure contact portion and threaded shank, threaded shank are threaded on rotor, and pressure contact portion compresses
In on impeller.
Further, the impeller, which is adopted, is formed from aluminium.
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 installation diagram between conversion sleeve, impeller and compression bar in the utility model.
Fig. 3 is the structure chart of conversion sleeve in the utility model.
Fig. 4 is the structure chart of impeller in the utility model.
Fig. 5 is the bottom view of impeller in the utility model.
Specific embodiment：
The utility model will be further described below with reference to the accompanying drawings.
As shown in Figures 1 to 4, the utility model discloses a kind of mounting structure of impeller in overspeed test bench, including casing
11st, stator 12, rotor 13, conversion sleeve 21, impeller 22, compression bar 23 and holding screw 24, stator 12 are fixed in casing 11, rotor
13 rotating supports are in stator 12, and the top of rotor 13 is stretched in outside casing 11.Conversion sleeve 21 is set in the top of rotor 13, tightly
Screw 24 is determined through conversion sleeve 21 and rotor 13 is threaded in, and impeller 22 is sheathed on conversion sleeve 21, and compression bar 23 is along rotor
13 axis direction sequentially passes through impeller 22 and conversion sleeve 21 and is threaded on rotor 13, and impeller 22 is pressed in conversion
On set 21.
Conversion sleeve 21 in the utility model includes being integrally formed ground round platform portion 211 and cylindrical portion 212, cylindrical portion 212 are put
Circle centre position in round platform portion 211, the outer circle wall in round platform portion 211 raise up and form cricoid radial positioning side 213, radially
Limiting slot 210 is formed between positioning side 213 and cylindrical portion 212, through hole 214, circle are equipped on the axis direction of cylindrical portion 212
The side wall in column portion 212 is equipped with threaded hole 215, and holding screw 24 is threaded in threaded hole 215.
Two rotation stop platform parts 216 are arranged on the outer circle wall of the cylindrical portion 212 of conversion sleeve 21, in rotation stop platform part
216 are equipped with concave part 217, which connects with through hole 214.
Circle centre position in the lower face of impeller 22 is equipped with boss portion 221, and stepped hole is equipped on the axis direction of impeller 22
220, the boss portion 221 of impeller 22 is placed in the limiting slot 210 of conversion sleeve 21, and the cylindrical portion 212 of conversion sleeve 21 contacts at step
On the step surface in hole 220.
Compression bar 23 in the utility model includes pressure contact portion 231 and threaded shank 232, threaded shank 232 are threaded in rotor
On 13, pressure contact portion 231 is pressed on impeller 22.
Impeller 22, which is adopted, to be formed from aluminium, and conversion sleeve 21, which is adopted, to be made of a steel.
When in use, when impeller 22 and 13 temperature of rotor rise, the swell increment of boss portion 221 is than conversion sleeve 21 in impeller 22
The swell increment on middle radial positioning side 213 is big, therefore the cooperation between impeller 22 and conversion sleeve 21 is even closer, reduces imbalance
Power.
Conversion sleeve 21 is equipped with rotation stop platform part 216 and is used for anti-torsion, and holding screw 24 is connected in 215 internal thread of threaded hole,
For the connection of rotor and conversion sleeve.The purpose of milling concave part 217 is in rotation stop platform part 216：Because it is milled out on conversion sleeve 21
After rotation stop 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, passes through groove milling
Mode removes the relatively thin wall of rotation stop platform part 216, ensures intensity during 212 anti-torsion of cylindrical portion, 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 (5)
1. a kind of mounting structure of impeller in overspeed test bench, including casing (11), stator (12) and rotor (13), the stator
(12) it is fixed in casing (11), rotor (13) rotating support is in stator (12), and the top of rotor (13) stretches in casing
(11) outside, it is characterised in that：Further include conversion sleeve (21), impeller (22), compression bar (23) and holding screw (24), the conversion sleeve
(21) top of rotor (13) is set in, holding screw (24) is through conversion sleeve (21) and is threaded in rotor (13), impeller
(22) it is sheathed on conversion sleeve (21), the axis direction of compression bar (23) along rotor sequentially passes through impeller (22) and conversion sleeve (21)
And be threaded on rotor (13), and impeller (22) is pressed on conversion sleeve (21)；
The conversion sleeve (21) includes being integrally formed ground round platform portion (211) and cylindrical portion (212), the cylindrical portion (212) are placed in
The circle centre position in round platform portion (211), the outer circle wall of round platform portion (211) raise up and form cricoid radial positioning side (213),
Limiting slot (210) is formed between radial positioning side (213) and cylindrical portion (212), is set on the axis direction of cylindrical portion (212)
There is through hole (214), the side wall of cylindrical portion (212) is equipped with threaded hole (215)；
The circle centre position of the lower face of the impeller (22) is equipped with boss portion (221), and platform is equipped on the axis direction of impeller (22)
Rank hole (220), the boss portion (221) of impeller (22) are placed in the limiting slot (210) of conversion sleeve (21), the cylinder of conversion sleeve (21)
Portion (212) is contacted on the step surface of stepped hole (220).
2. the mounting structure of impeller in overspeed test bench as described in claim 1, it is characterised in that：The conversion sleeve (21)
Two rotation stop platform parts (216) are arranged on the outer circle wall of cylindrical portion (212), groove is equipped in rotation stop platform part (216)
Portion (217), the concave part (217) connect with through hole (214).
3. the mounting structure of impeller in overspeed test bench as described in claim 1, it is characterised in that：The compression bar (23) includes
Pressure contact portion (231) and threaded shank (232), threaded shank (232) are threaded on rotor (13), and pressure contact portion (231) is pressed in leaf
It takes turns on (22).
4. the mounting structure of impeller in overspeed test bench as described in claim 1, it is characterised in that：The impeller (22) uses
Aluminium is made.
5. the mounting structure of impeller in overspeed test bench as described in claim 1, it is characterised in that：The conversion sleeve (21) is adopted
It is made of a steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420068.0U CN207423513U (en) | 2017-10-30 | 2017-10-30 | The mounting structure of impeller in a kind of overspeed test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721420068.0U CN207423513U (en) | 2017-10-30 | 2017-10-30 | The mounting structure of impeller in a kind of overspeed test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207423513U true CN207423513U (en) | 2018-05-29 |
Family
ID=62310340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721420068.0U Active CN207423513U (en) | 2017-10-30 | 2017-10-30 | The mounting structure of impeller in a kind of overspeed test bench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207423513U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643173A (en) * | 2017-10-30 | 2018-01-30 | 南京磁谷科技有限公司 | The mounting structure of impeller in a kind of overspeed test bench |
-
2017
- 2017-10-30 CN CN201721420068.0U patent/CN207423513U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107643173A (en) * | 2017-10-30 | 2018-01-30 | 南京磁谷科技有限公司 | The mounting structure of impeller in a kind of overspeed test bench |
| CN107643173B (en) * | 2017-10-30 | 2023-09-22 | 南京磁谷科技有限公司 | Impeller mounting structure in overspeed test bed |
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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 |