CN102323009B - Dynamic balance correcting method for fan - Google Patents
Dynamic balance correcting method for fan Download PDFInfo
- Publication number
- CN102323009B CN102323009B CN 201110248222 CN201110248222A CN102323009B CN 102323009 B CN102323009 B CN 102323009B CN 201110248222 CN201110248222 CN 201110248222 CN 201110248222 A CN201110248222 A CN 201110248222A CN 102323009 B CN102323009 B CN 102323009B
- Authority
- CN
- China
- Prior art keywords
- blower fan
- fan
- impeller
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a dynamic balance correcting method for a fan, which can be used for shortening the correcting time. The method comprises the following steps of: firstly, determining an imbalance point of the fan and measuring the radial vibration offset delta caused by imbalance of the fan by using a vibration measurer; secondly, computing allowed imbalance degree and allowed residual imbalance amount of the fan, wherein the allowed imbalance degree eper of the fan is equal to (G*1000)/(n/10), and the allowed residual imbalance amount m of the fan is equal to (eper*M)/(r*2); thirdly, computing the imbalance amount of the fan, wherein the imbalance amount m'' of the fan is equal to (m/0.13)*delta; and lastly, balancing. After the method is adopted for correcting the dynamic balance of the fan, the correcting time can be shortened greatly, the fan restores running within a very short period of time, normal performance of production is ensured, a large quantity of manpower and material resources are saved simultaneously, and the production running cost is lowered. The method is suitable to be popularized and applied in the fan repair field.
Description
Technical field
The present invention relates to blower fan and keep in repair field, especially a kind of dynamic balance correcting method for fan.
Background technology
in the blower fan use procedure, the destroyed situation of blower fan transient equilibrium often appears, could continue to use after destroyed rear common need to the correction of the transient equilibrium of blower fan, at present, the general using dynamic balancing machine is proofreaied and correct the transient equilibrium of blower fan, there is following problem in this method in trimming process: at first, utilize dynamic balancing machine to carry out timing to the transient equilibrium of blower fan, the impeller of blower fan must be removed, then install on dynamic balancing machine and just can proofread and correct, after correction is completed, again impeller is installed on blower fan, but, the dismounting of draught fan impeller need to spend long time, impeller is in trimming process, blower fan can't be worked, make production normally not carry out, cause stopping production, and, the dismounting of impeller need to consume a large amount of manpower and materials, greatly increased the production run cost, secondly, because dynamic balancing machine is expensive, a lot of manufacturing enterprises all are not equipped with dynamic balancing machine, in case the transient equilibrium of blower fan is destroyed, impeller can only be removed and deliver to blower fan manufacturing plant and carry out dynamic balance calibration, the required time is longer, had a strong impact on the normal production of enterprise, bring huge loss to enterprise, and sending producer back to, to proofread and correct required expense also higher, additionally increased the production run cost.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of dynamic balance correcting method for fan that can shorten correction time.
The technical solution adopted for the present invention to solve the technical problems is: this dynamic balance correcting method for fan comprises the following steps:
A, determine the uneven point of blower fan, and utilize vialog to measure the radial vibration displacement △ that blower fan causes due to imbalance;
B, calculate the permission degree of unbalancedness of blower fan and allow remaining amount of unbalance, specific formula for calculation is as follows:
The permission degree of unbalancedness eper=(G * 1000)/(n/10) of blower fan, wherein G is the balance accuracy grade of blower fan, n is the workpiece working speed;
The remaining amount of unbalance m=of the permission of blower fan (eper * M)/(r * 2), wherein M is the workpiece rotating quality, r is workpiece radius;
The amount of unbalance of C, calculating blower fan, specific formula for calculation is as follows:
The amount of unbalance m ＂ of blower fan=(m/0.13) * △;
The balancing weight of the amount of unbalance m ＂ identical weight of D, cutting and blower fan is fixed on the uneven off-position of putting the impeller at corresponding 180 ° of angles with balancing weight.
Be further, in described steps A, the method for the imbalance point of definite blower fan is as follows: the rated speed of opening blower fan, the axle journal of pin near blower fan impeller shaft will be drawn, after drawing pin and the journal surface of the impeller shaft of rotation contact, draw the axle journal that pin stops close impeller shaft, and move along the axial direction of impeller shaft, draw pin and draw many arcs in the journal surface of impeller shaft, after blower fan stops, find out the mid point of many drawn arcs in the journal surface of impeller shaft, then select a median average from above-mentioned mid point, this median average is the uneven point of blower fan.
Further that described balancing weight is fixed on the off-position of impeller by the mode of welding.
The invention has the beneficial effects as follows: adopt bearing calibration of the present invention to carry out timing to the blower fan transient equilibrium, need not the impeller of blower fan is removed, can complete the dynamically balanced correction of blower fan in the production scene, greatly shortened correction time, blower fan can be resumed operation in a short period of time, guarantee normally carrying out of production, and, owing to not needing the dismounting impeller, a large amount of manpower and materials have been saved, in addition, do not need to be equipped with dynamic balancing machine yet, greatly reduce the production run cost.Utilize the setting-out method to look for the uneven point of blower fan, only need can determine with geometry instruments such as picture pin, rulers the uneven point of blower fan, can greatly save cost, and simple to operate, convenient and swift.Balancing weight is fixed on the off-position of impeller by the mode of welding, can effectively avoid balancing weight to drop and then destroy the transient equilibrium of blower fan, extends the maintain and replace cycle of blower fan.
Description of drawings
Fig. 1 is the structural representation of blower fan of the present invention;
Fig. 2 is that the present invention utilizes the setting-out method to look for the schematic diagram of the uneven point of blower fan;
Be labeled as in figure: balancing weight 1, impeller 2, impeller shaft 3, axle journal 4, picture pin 5.
Embodiment
Dynamic balance correcting method for fan of the present invention comprises the following steps:
at first, determine the uneven point of blower fan, and utilize vialog to measure the radial vibration displacement △ that blower fan causes due to imbalance, the imbalance point of determining blower fan can several different methods, for example, can adopt PH phasemeter to measure the uneven point of blower fan, but this mode needs the optional equipment PH phasemeter, cost is higher, also can utilize repeatedly the mode of counterweight to look for the uneven point of blower fan, concrete mode is as follows: at first, utilize vialog to measure the radial vibration displacement of blower fan, then distinguish counterweight at the diverse location of impeller 2, and detect respectively the radial vibration displacement of blower fan, if the radial vibration displacement of measuring is compared with detected radial vibration displacement before counterweight not, displacement increases the uneven point that maximum balance positions is blower fan, this mode needs repeatedly counterweight and detects, complex operation, and the position of detected uneven point is also inaccurate, as preferred mode be: the method for imbalance point of determining blower fan is as follows: the rated speed of opening blower fan, the axle journal 4 of pin 5 near blower fan impeller shaft 3 will be drawn, after axle journal 4 Surface Contacts of the impeller shaft 3 of drawing pin 5 and rotation, draw the axle journal 4 that pin 5 stops close impeller shaft 3, and move along the axial direction of impeller shaft 3, because there is amount of unbalance in impeller 2, make impeller shaft 3 vibration-generating skew in rotation process, when the position at impeller shaft 3 deflection picture pin 5 places, draw axle journal 4 Surface Contacts of pin 5 and impeller shaft 3, when impeller shaft 3 other direction of deflection, axle journal 4 surfaces of drawing pin 5 and impeller shaft 3 do not contact, draw pin 5 and draw arc on axle journal 4 surfaces when drawing pin 5 with axle journal 4 Surface Contact, after blower fan stops, find out the mid point of many drawn arcs on axle journal 4 surfaces of impeller shaft 3, then select a median average from above-mentioned mid point, this median average is the uneven point of blower fan.Utilize the setting-out method to look for the uneven point of blower fan, only need can determine with geometry instruments such as picture pin 5, rulers the uneven point of blower fan, can greatly save cost, and simple to operate, convenient and swift.
Secondly, calculate the permission degree of unbalancedness of blower fan and allow remaining amount of unbalance, the permission degree of unbalancedness of described blower fan refers to the allowable offset amount of slewing corresponding its balance level rotor under maximum speed, the remaining amount of unbalance of described permission be actual slewing rotor according to its profile and quality requirements, proofread and correct and reach the remaining unbalance mass, that its corresponding balance level requires.Specific formula for calculation is as follows:
The permission degree of unbalancedness eper=(G * 1000)/(n/10) of blower fan, wherein G is the balance accuracy grade of blower fan, and n is the working speed of impeller 2, and the unit of the permission degree of unbalancedness eper of blower fan is μ m, and the unit of the working speed n of impeller 2 is r/min;
The remaining amount of unbalance m=of the permission of blower fan (eper * M)/(r * 2), wherein M is the quality of impeller 2, and r is the radius of impeller 2, and the unit of the remaining amount of unbalance m of the permission of blower fan is g, the unit of the mass M of impeller 2 is kg, and the unit of the radius r of impeller 2 is mm;
Then calculate the amount of unbalance of blower fan, specific formula for calculation is as follows:
The amount of unbalance m ＂ of blower fan=(m/0.13) * △; The unit of the amount of unbalance m ＂ of blower fan is g, and the unit of radial vibration displacement △ is mm;
After calculating the amount of unbalance of blower fan, blower fan is carried out counterweight, the balancing weight 1 of the amount of unbalance m ＂ identical weight of cutting and blower fan, balancing weight 1 is fixed on the uneven off-position of putting the impeller 2 at corresponding 180 ° of angles can make blower fan reach balance, described off-position refers to that impeller 2 directly is not subject to the position of wind-force effect, for example, can be with fixing on the cover plate at impeller 2 two ends or the back side of blade etc. of balancing weight 1.The off-position that described balancing weight 1 can be bolted, clamping, the various ways such as bonding are fixed on impeller 2, as preferred mode be: described balancing weight 1 is fixed on the off-position of impeller 2 by the mode of welding, can effectively avoid balancing weight 1 to drop and cause the transient equilibrium of blower fan destroyed, extend the maintain and replace cycle of blower fan.
Adopt said method to carry out timing to the blower fan transient equilibrium, need not the impeller 2 of blower fan is removed, can complete the dynamically balanced correction of blower fan in the production scene, shortened correction time, blower fan can be resumed operation in a short period of time, guarantee normally carrying out of production, and, owing to not needing dismounting impeller 2, a large amount of manpower and materials have been saved, in addition, do not need to be equipped with dynamic balancing machine yet, greatly reduce the production run cost.
specific embodiment: the mass M=10000kg of a Fans impeller 2, radius r=the 1200mm of impeller 2, the working speed n=1000r/min of impeller 2, balance level is G6.3, the transient equilibrium of this Fans is destroyed, at first, determine the uneven point of blower fan, and utilize vialog to measure radial vibration displacement △=0.10mm that blower fan causes due to imbalance, then calculate permission degree of unbalancedness eper=(G * 1000)/(n/10)=(6.3 * 1000) of this Fans/(1000/10)=63 μ m, the remaining amount of unbalance m=of the permission of blower fan (eper * M)/(r * 2)=(63 * 10000)/(1200 * 2)=262.5g, then calculate the amount of unbalance m ＂ of the amount of unbalance m ＂ of blower fan=(m/0.13) * △=blower fan=(262.5/0.13) * 0.10=201.9g, after calculating the amount of unbalance m ＂ of blower fan, cutting weight is the balancing weight 1 of 201.9g, balancing weight 1 is fixed on the uneven off-position of putting the impeller 2 at corresponding 180 ° of angles can make blower fan reach balance.
Claims (3)
1. dynamic balance correcting method for fan is characterized in that comprising the following steps:
A, determine the uneven point of blower fan, and utilize vialog to measure the radial vibration displacement △ that blower fan causes due to imbalance;
B, calculate the permission degree of unbalancedness of blower fan and allow remaining amount of unbalance, specific formula for calculation is as follows:
The permission degree of unbalancedness eper=(G * 1000)/(n/10) of blower fan, wherein G is the balance accuracy grade of blower fan, and n is the working speed of impeller, and unit is r/min, and the unit of the permission degree of unbalancedness eper of blower fan is μ m;
The remaining amount of unbalance m=of the permission of blower fan (eper * M)/(r * 2), wherein M is the workpiece rotating quality, and r is workpiece radius, and the unit of the remaining amount of unbalance m of the permission of blower fan is g, the unit of the mass M of impeller (2) is kg, and the unit of the radius r of impeller (2) is mm;
The amount of unbalance of C, calculating blower fan, specific formula for calculation is as follows:
The amount of unbalance m ＂ of blower fan=(m/0.13) * △, the unit of the amount of unbalance m ＂ of blower fan is g, and the unit of radial vibration displacement △ is mm, and the unit of constant 0.13 is mm;
The balancing weight (1) of the amount of unbalance m ＂ identical weight of D, cutting and blower fan is fixed on the uneven off-position of putting the impeller (2) at corresponding 180 ° of angles with balancing weight (1).
2. dynamic balance correcting method for fan as claimed in claim 1, it is characterized in that: in described steps A, the method for the imbalance point of definite blower fan is as follows: the rated speed of opening blower fan, to draw pin (5) near the axle journal (4) of blower fan impeller shaft (3), after axle journal (4) Surface Contact of the impeller shaft (3) of drawing pin (5) and rotation, draw the axle journal (4) that pin (5) stops close impeller shaft (3), and move along the axial direction of impeller shaft (3), draw pin (5) and draw many arcs on axle journal (4) surface of impeller shaft (3), after blower fan stops, find out the mid point of many drawn arcs on axle journal (4) surface of impeller shaft (3), then select a median average from above-mentioned mid point, this median average is the uneven point of blower fan.
3. dynamic balance correcting method for fan as claimed in claim 1 or 2 is characterized in that: described balancing weight (1) is fixed on the off-position of impeller (2) by the mode of welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110248222 CN102323009B (en) | 2011-08-24 | 2011-08-24 | Dynamic balance correcting method for fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110248222 CN102323009B (en) | 2011-08-24 | 2011-08-24 | Dynamic balance correcting method for fan |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102323009A CN102323009A (en) | 2012-01-18 |
| CN102323009B true CN102323009B (en) | 2013-06-26 |
Family
ID=45450798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110248222 Expired - Fee Related CN102323009B (en) | 2011-08-24 | 2011-08-24 | Dynamic balance correcting method for fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102323009B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872101A (en) * | 2017-04-14 | 2017-06-20 | 苏州标杆知识产权运营有限公司 | The general mandrel of pressure dynamic balancing test |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943780B (en) * | 2012-12-04 | 2015-05-20 | 吴小江 | Fan impeller levelling balancing device |
| CN103115725B (en) * | 2013-01-16 | 2015-06-24 | 长沙赛尔透平机械有限公司 | Balancing device and balancing method for dynamic balancing test before impeller over speed |
| CN103234703B (en) * | 2013-04-24 | 2015-08-05 | 莱芜钢铁集团有限公司 | A kind of dual-threshold detection method solving fan vibration |
| CN104677549B (en) * | 2013-11-27 | 2018-10-30 | 上海宝钢工业技术服务有限公司 | The online Fast-Balance bearing calibration of COG gas pressure blowers |
| CN104330214B (en) * | 2014-08-07 | 2017-04-19 | 郑州大学 | Simple field dynamic balancing method |
| CN105798475A (en) * | 2014-12-31 | 2016-07-27 | 上海运申制版模具有限公司 | Intaglio roller dynamic balance block welding method |
| CN105004483B (en) * | 2015-06-08 | 2017-11-07 | 江苏通达动力科技股份有限公司 | A kind of exceeded method for repairing and mending of rotor amount of unbalance |
| CN105387972A (en) * | 2015-11-23 | 2016-03-09 | 沈阳黎明航空发动机(集团)有限责任公司 | Rotor online balancing method after blade replacing of heavy type gas turbine |
| CN105651459A (en) * | 2016-01-21 | 2016-06-08 | 正兴车轮集团有限公司 | Method for keeping dynamic balance of tubeless wheel, and counterbalance |
| CN106092445A (en) * | 2016-08-11 | 2016-11-09 | 大唐长春第二热电有限责任公司 | Vector triangle calculates the method that method looks for rotor dynamic balancing |
| CN106353035A (en) * | 2016-10-31 | 2017-01-25 | 攀钢集团工程技术有限公司 | Online dynamic balance correction method of large-size draught fan impeller |
| CN108760154A (en) * | 2018-07-27 | 2018-11-06 | 佛山市博奥智能装备有限公司 | The full-automatic dynamic balancing of through-flow fan impeller and deformation detection correct all-in-one machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106678A (en) * | 1986-10-14 | 1988-04-27 | 北京航空学院 | The method of balance cantilever rotor with outer centre of gravity |
| DE4120197A1 (en) * | 1991-06-19 | 1992-12-24 | Audi Ag | Balancing coupled rotors with numerical eccentricity measurement - using balance wt. calculation and positioning from prod. of eccentricity and empirical sum of rotating masses |
| CN1456870A (en) * | 2002-05-08 | 2003-11-19 | 谱威科技顾问股份有限公司 | Fan rotor dynamic balance calibrating method and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5747050A (en) * | 1980-09-01 | 1982-03-17 | Hitachi Ltd | Method and apparatus to connect several rotors |
-
2011
- 2011-08-24 CN CN 201110248222 patent/CN102323009B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106678A (en) * | 1986-10-14 | 1988-04-27 | 北京航空学院 | The method of balance cantilever rotor with outer centre of gravity |
| DE4120197A1 (en) * | 1991-06-19 | 1992-12-24 | Audi Ag | Balancing coupled rotors with numerical eccentricity measurement - using balance wt. calculation and positioning from prod. of eccentricity and empirical sum of rotating masses |
| CN1456870A (en) * | 2002-05-08 | 2003-11-19 | 谱威科技顾问股份有限公司 | Fan rotor dynamic balance calibrating method and device |
Non-Patent Citations (2)
| Title |
|---|
| 关于动平衡校验中一些概念和计算方法的讨论;严普强;《试验技术与试验机》;19801230(第6期);第10-17页 * |
| 选粉机转子不平衡量的确定;段学锋;《四川水泥》;20091230(第3期);第26-28页 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106872101A (en) * | 2017-04-14 | 2017-06-20 | 苏州标杆知识产权运营有限公司 | The general mandrel of pressure dynamic balancing test |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102323009A (en) | 2012-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102323009B (en) | Dynamic balance correcting method for fan | |
| CN202350722U (en) | Novel fixture for detecting coaxiality of transmission of internal-combustion locomotive | |
| CN104236799B (en) | Dynamic balance method for fast eliminating vibration, in horizontal direction, of bearing pedestals | |
| CN109540390B (en) | Method for removing unbalance of high-speed rotor and dynamic balance mandrel | |
| KR102224333B1 (en) | An inspection system of spindle run-out in cnc machines and a method thereof | |
| WO2009055878A3 (en) | Method to avoid instable surge conditions with centrifugal compressors and centrifugal compressors provided with means for automatically applying such a method | |
| CN103776590A (en) | Rotor balance experiment table | |
| CN204008143U (en) | Hub spindle carries play checkout equipment | |
| CN104977124A (en) | Complete dynamic balance type coupling | |
| CN103419087B (en) | Method for using numerical control machine tool for correcting tool dynamic balance | |
| CN208420273U (en) | A kind of miniature motor rotor amount of unbalance measurement device | |
| CN205209695U (en) | Centrifugal fan impeller dynamic balance flange axle sleeve for accuracy test | |
| CN104481930B (en) | A kind of spot dynamic balance method of vertical water pump | |
| CN1206791C (en) | Method for determining weight phase for calibrating dynamic balance of vertical water turbine generator rotor | |
| CN203929323U (en) | A kind of pouring weight formula grinding wheel dynamic-balance test control device | |
| CN203785840U (en) | Rotor balance experiment table | |
| CN113358281B (en) | Centrifugal fan impeller dynamic balance correction method | |
| CN203432750U (en) | Dynamic balance unit for cross universal coupling | |
| EP2485866A1 (en) | Part holder particularly for parts having a large mass to be machined in machine tools such as vertical lathes and the like | |
| CN103671236A (en) | Submersible-sewage-pump impeller balancing tool | |
| CN204339463U (en) | For the runout amplitude detecting device of the cutting edge of milling cutter | |
| CN111347284A (en) | Online dynamic balance checking and adjusting device and method in lathe hub machining | |
| RU2387962C1 (en) | Method of balancing rotor with drive clutch and device to this end | |
| CN202928514U (en) | Generator rotation shaft coaxiality detection fixture | |
| CN201724782U (en) | Static balance detection device of brake drum and wheel hub |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130626 Termination date: 20160824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |