CN207406531U - A kind of revised double-entry impeller of amount of unbalance - Google Patents
A kind of revised double-entry impeller of amount of unbalance Download PDFInfo
- Publication number
- CN207406531U CN207406531U CN201721384883.6U CN201721384883U CN207406531U CN 207406531 U CN207406531 U CN 207406531U CN 201721384883 U CN201721384883 U CN 201721384883U CN 207406531 U CN207406531 U CN 207406531U
- Authority
- CN
- China
- Prior art keywords
- double
- entry impeller
- face
- unbalance
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a kind of revised double-entry impellers of amount of unbalance, sealing ring end face including double-entry impeller both sides, it is offered on the both sides sealing ring end face and several removes repeated hole, each go on repeated hole to be equipped with a capping, it is described per what is opened up on side seal ring end face repeated hole to be gone to be arranged in angle of the end face circumference no more than 60 °, it the capping and described goes between repeated hole as interference fit.On the premise of double-entry impeller cover board face use intensity is ensured, reducing can not scrap the utility model because amount of unbalance is larger caused by duplicate removal, greatly improve double-entry impeller blance test qualification rate.
Description
Technical field
The utility model is related to impeller for double suction centrifugal pump, more specifically to a kind of revised double suction of amount of unbalance
Impeller.
Background technology
Rotation generates centrifugal force conveying liquid to impeller for double suction centrifugal pump at a high speed, and in order to reduce pump operation vibration, pump need to be turned
Son is balanced experiment, as shown in Figure 1, the parts such as double-entry impeller 1, shaft coupling 2, axle sleeve 3 are fixed on pump shaft 4,
Entire rotor is placed on the stent of dynamic balancing machine, carry out dynamic balance running, find out amount of unbalance gravimetric value and place position into
Row is corrected, and makes rotor unbalance value in allowed limits.
Because pump shaft, axle sleeve, shaft coupling are all workpiece, amount of unbalance is relatively small, and shaft coupling is typically by supplier
It provides, should not be modified again after blance test.And double-entry impeller is used and cast, the runner inside double-entry impeller is in casting
Placing core is formed, these runners can not machine, therefore the amount of unbalance of double-entry impeller is relatively large, so pump rotor is uneven
Amount is usually converted onto two cover board plane face of double-entry impeller, and because double-entry impeller can not correct imbalance using emphasis method
Amount, so can only be by carrying out duplicate removal amendment on two cover board plane faces.
As shown in Figure 2,3, existing duplicate removal is corrected in mode of operation, by water pump industry, usually in double-entry impeller cover board face
Baking soda 5 is opened in the range of 0.9 φ Da, and goes 5 depth of Baking soda no more than 0.3 times of drawing regulation cover sheet thickness S, and double suction leaf
The cover board of wheel usually only in 5~10mm, than relatively thin, so corrects not when double-entry impeller casting core is eccentric or machines
When, double-entry impeller is there are larger amount of unbalance, at this moment can generate because can not be in double-entry impeller cover board face duplicate removal or duplicate removal depth
It is exceeded and double-entry impeller is caused to scrap.Particularly when double-entry impeller outer diameter φ Da sizes are smaller, and water inlet diameter phi Ds is opposite
When larger, the amount of unbalance of double-entry impeller can not be more corrected.
Utility model content
In view of the above defects of the prior art, after the purpose of this utility model is to provide a kind of amount of unbalance amendment
Double-entry impeller, on the premise of double-entry impeller cover board face use intensity is ensured, reduce because amount of unbalance is larger can not duplicate removal
Caused by scrap, greatly improve double-entry impeller blance test qualification rate.
To achieve the above object, the utility model adopts the following technical solution：
A kind of revised double-entry impeller of amount of unbalance, the sealing ring end face including double-entry impeller both sides, the both sides
Offered on sealing ring end face it is several remove repeated hole, each go on repeated hole to be equipped with a capping, it is described per side seal ring end face on
What is opened up goes repeated hole to be arranged in the end face circumference no more than in 60 ° of angle, the capping and described goes between repeated hole as interference
Cooperation.
The capping is to rise performance with suitable water, and is made with corrosion resistant nonmetallic materials.
The repeated hole apex angle that goes is 118 °.
In above-mentioned technical solution, a kind of double-entry impeller amount of unbalance modification method provided by the utility model and its
Revised double-entry impeller, also with following advantageous effect：
Under the premise of impeller cover plate face use intensity is ensured, 1. reducing can not go because amount of unbalance is larger the utility model
It is scrapped caused by weight, greatly improves double-entry impeller blance test qualification rate；
2. the utility model duplicate removal in four planes, improves rotor balancing quality, to the impeller that runs at high speed, can improve
Pump vibration；
3. the utility model reduces duplicate removal depth and area on cover board face, drilling orifice smothers on end face, reduces not
Balance influence of the duplicate removal to double-entry impeller presentation quality and because of influence of the impeller surface injustice to waterpower.
Description of the drawings
Fig. 1 is the assembling schematic diagram of existing double-entry impeller blance test；
Fig. 2 is the schematic diagram of existing double-entry impeller amount of unbalance modification method；
Fig. 3 is the left view of Fig. 2；
Fig. 4 is the schematic diagram that the utility model double-entry impeller amount of unbalance corrects state；
Fig. 5 is the schematic diagram of the 3rd rectifying plane of the utility model double-entry impeller；
Fig. 6 is the schematic diagram of the 4th rectifying plane of the utility model double-entry impeller；
Fig. 7 is that the utility model removes repeated hole φ d close-up schematic views.
Specific embodiment
The technical solution of the utility model is further illustrated with reference to the accompanying drawings and examples.
Incorporated by reference to shown in Fig. 4 to Fig. 7, a kind of revised double-entry impeller of amount of unbalance provided by the utility model is adopted
Modification method comprises the following steps：
S1. when amount of unbalance occurs in pump rotor, first by water pump industry usual method, amount of unbalance is assigned to double-entry impeller
Duplicate removal amendment in the range of 0.9 φ Da of first rectifying plane 6 and 7 cover board face of the second rectifying plane, control duplicate removal depth are no more than drawing stream
In 0.3 times of road cover sheet thickness S, and a part of duplicate removal position is stayed to refine；
S2. on 7 cover board face of double-entry impeller the first rectifying plane 6 and the second rectifying plane after duplicate removal, repetition measurement double-entry impeller is remaining
If being still unable to reach balance requirement, in double-entry impeller water inlet end face area, duplicate removal, tool are carried out using drilling for uneven weight
Body is as follows：
Rotor remnants couple-unbalances are assigned to the R of the 3rd rectifying plane 8 and the 4th rectifying plane 9 by S2.1Ⅲ、RⅣPosition is (i.e.
For the sealing ring end face of double-entry impeller both sides)；
S2.2 reads the unbalance residual content m on the 3rd rectifying plane 8 and the 4th rectifying plane 9 respectively on dynamic balancing machineⅢ、mⅣ
And corresponding angle, calculate single hole duplicate removal weight mIt is single；
S2.3 removes repeated hole φ d sizes and depth h by duplicate removal spot size, selection is intended, and calculating needs drilling hole amount；
S2.4 is in the 3rd rectifying plane 8 of double-entry impeller and the R of the 4th rectifying plane 9Ⅲ、RⅣPlace and corresponding angle position bore and go
Repeated hole 10 carries out duplicate removal；
S3. the aperture of repeated hole 10 is gone in capping；
S4. resume classes balance, until qualified.
Preferably, in the step S2, drill bit that generally use apex angle is 118 ° spuds in repeated hole 10.
Preferably, in the step S2.2, mIt is single=mHole-mPlug,
In above formula,
mHoleFor φ d hole duplicate removal weight (g)；
mPlugFor stopple weight (g)；
D is duplicate removal bore dia (cm)；
H is duplicate removal hole depth (cm)；
ρLeafFor impeller material density (g/cm3)；
hPlugStopple height (cm)；
ρPlugStopple density of material (g/cm3)。
Preferably, in the step S2.3, calculating needs drilling hole amount to calculate in the 3rd rectifying plane and the 4th school
R on frontⅢ、RⅣLocate duplicate removal hole number nⅢ、nⅣ, it is as follows respectively：
nⅢ=mⅢ/mIt is single；
nⅣ=mⅣ/mIt is single。
Preferably, in the step S2.4, in the 3rd rectifying plane 8 of double-entry impeller and the R of the 4th rectifying plane 9Ⅲ、RⅣPlace into
During row drilling duplicate removal, also need to control the size of t1, t2, t3, be specially：
S2.4.1 cannot be less than double-entry impeller cover sheet thickness in order to ensure intensity after double-entry impeller duplicate removal, usual t1, t2, t3
0.3 times of S；
S2.4.2 goes repeated hole 10 to be not more than 60 ° in circumference angle [alpha].
Preferably, in the step S3, envelope goes to 10 aperture of repeated hole, is specially：
S3.1, which is selected, there is suitable water to rise performance and seal with good corrosion resistant nonmetallic materials conduct and go to repeated hole hole
The material of mouth；
S3.2 presses φ d × hPlugCylinder closure is processed into, block φ d sizes and goes between repeated hole 10 to have suitable interference
Amount should ensure that closure will not drop out on repeated hole 10 is removed in long-term rotation at a high speed, double-entry impeller not generated again larger attached
Add internal stress；
S3.3 goes to 10 aperture of repeated hole to seal by all, keeps aperture end face equal with double-entry impeller end face.
Preferably, in the step S3, during balance of resuming classes, if double-entry impeller unbalance residual content also have it is a small amount of overproof,
Double-entry impeller the first rectifying plane 6 is then converted to again and 7 cover board position of the second rectifying plane carries out polishing refine, until qualified.
The revised double-entry impeller of a kind of amount of unbalance provided by the utility model includes the sealing ring of double-entry impeller both sides
End face 8,9, offer on the both sides sealing ring end face 8,9 it is several remove repeated hole 10, each go on repeated hole 10 to be equipped with one
11 are covered, what is opened up on every side seal ring end face 8,9 goes repeated hole 10 to be arranged in the angle that the end face circumference is not more than 60 °
It is interior, be α≤60 °, the capping 11 and it is described go between repeated hole 10 to be suitably to be interference fitted, closure should be ensured in duplicate removal
It will not be dropped out in long-term rotation at a high speed on hole 10, not generate larger additional internal stress to double-entry impeller again.
Preferably, the capping 11 is to rise performance with suitable water, and it is made with corrosion resistant nonmetallic materials.
Preferably, the repeated hole apex angle 12 that goes is 118 °, the brill that generally use apex angle when removing repeated hole 10 is 118 ° is bored
Head.
Relatively complicated because calculating every time in practical operation, scene execution is more difficult, can also carry out following simplifying and grasp
Make：
1. bore diameter φ d and depth h are standardized, the t size ranges that φ d are applicable in are listed；
2. the capping of diameter phi d is also standardized, and is processed by standard component and be placed on dynamic balancing amendment workshop section；
3. by double-entry impeller common used material steel splitting, iron, copper, single hole duplicate removal weight m is listed with formIt is single(mIt is single=mHole-mPlug)；
4. during blance test, once m is read to obtain from dynamic balancing machineⅢ、mⅣUnbalanced weight magnitude, by double-entry impeller t sizes, from
Suitable φ d bore sizes are selected in form, find corresponding mIt is single, m is used respectivelyⅢ、mⅣDivided by mIt is single, so that it may draw 8 He of the 3rd rectifying plane
R on 4th rectifying plane 9Ⅲ、RⅣPlace needs the quantity to drill.
Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate that this practicality is new
Type, and be not used as the restriction to the utility model, as long as in the spirit of the utility model, to the above
Variation, the modification of embodiment will all fall in the Claims scope of the utility model.
Claims (3)
1. a kind of revised double-entry impeller of amount of unbalance, the sealing ring end face including double-entry impeller both sides, which is characterized in that institute
Offered on the both sides sealing ring end face stated it is several remove repeated hole, each go on repeated hole to be equipped with a capping, it is described per side seal
What is opened up on ring end face goes repeated hole to be arranged in the end face circumference no more than in 60 ° of angle, the capping with it is described go repeated hole it
Between for interference fit.
2. a kind of revised double-entry impeller of amount of unbalance as described in claim 1, which is characterized in that the capping is tool
There is suitable water to rise performance, and be made with corrosion resistant nonmetallic materials.
3. a kind of revised double-entry impeller of amount of unbalance as described in claim 1, which is characterized in that described goes to repeated hole top
Angle is 118 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721384883.6U CN207406531U (en) | 2017-10-25 | 2017-10-25 | A kind of revised double-entry impeller of amount of unbalance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721384883.6U CN207406531U (en) | 2017-10-25 | 2017-10-25 | A kind of revised double-entry impeller of amount of unbalance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207406531U true CN207406531U (en) | 2018-05-25 |
Family
ID=62407549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721384883.6U Active CN207406531U (en) | 2017-10-25 | 2017-10-25 | A kind of revised double-entry impeller of amount of unbalance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207406531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707664A (en) * | 2017-10-25 | 2019-05-03 | 上海凯士比泵有限公司 | A kind of double-entry impeller amount of unbalance modification method and its revised double-entry impeller |
| CN110686829A (en) * | 2019-09-20 | 2020-01-14 | 上海诺特飞博燃烧设备有限公司 | Dynamic balancing method of impeller |
-
2017
- 2017-10-25 CN CN201721384883.6U patent/CN207406531U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109707664A (en) * | 2017-10-25 | 2019-05-03 | 上海凯士比泵有限公司 | A kind of double-entry impeller amount of unbalance modification method and its revised double-entry impeller |
| CN109707664B (en) * | 2017-10-25 | 2024-02-13 | 上海凯士比泵有限公司 | Double-suction impeller unbalance correction method and corrected double-suction impeller |
| CN110686829A (en) * | 2019-09-20 | 2020-01-14 | 上海诺特飞博燃烧设备有限公司 | Dynamic balancing method of impeller |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207406531U (en) | A kind of revised double-entry impeller of amount of unbalance | |
| CN109707664A (en) | A kind of double-entry impeller amount of unbalance modification method and its revised double-entry impeller | |
| CN104977124A (en) | Complete dynamic balance type coupling | |
| CN102183338A (en) | Liquid-injection type online dynamic balance head structure for high rotating speed | |
| CN207906305U (en) | A kind of shafting structure of needle bearing swing test machine | |
| CN201501530U (en) | Suspended-type static balancing machine for large-scale marine propeller | |
| CN105867307A (en) | High-speed dynamic balance restoration method for transmission shaft | |
| CN206253411U (en) | A kind of instrument and meter dust exhaust apparatus | |
| CN213902741U (en) | Novel grinding wheel dynamic balance device | |
| CN214281167U (en) | Novel liquid type rotor dynamic balance head structure | |
| CN206930325U (en) | A kind of flow instrument with cavitation-preventive function | |
| CN204159684U (en) | A kind of detachable correction rotates the device of roll body flexible deformation | |
| CN208589865U (en) | Machine shaft and motor | |
| CN207508999U (en) | A kind of device that grinding oscillation mark is mitigated or eliminated | |
| CN207215369U (en) | A kind of fluid-flywheel clutch volume dynamic balance test tool | |
| CN207454735U (en) | A kind of automatic transmission oil level observation structure | |
| CN217111309U (en) | Structure for balancing impeller mandrel by using expansion sleeve | |
| CN112128314A (en) | Liquid injection type rotor dynamic balance head structure | |
| CN204082643U (en) | A kind of new structure oil impeller that can carry out dynamic balance calibration | |
| CN206129608U (en) | A high accuracy dynamic balance device for roots blower impeller | |
| CN109505919B (en) | Numerical control intelligent fault diagnosis control device | |
| CN106090120B (en) | Pneumatic liquid transfer type active balancing system for being installed in axis | |
| CN206192656U (en) | No inner circle bearing life testing equipment | |
| CN201168804Y (en) | Special distributed deep hole processing apparatus of revolving parts | |
| CN202622377U (en) | Centrifugal machine bearing seat nodular iron casting production tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |