CN102323009A - Dynamic balance correcting method for fan - Google Patents
Dynamic balance correcting method for fan Download PDFInfo
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- CN102323009A CN102323009A CN201110248222A CN201110248222A CN102323009A CN 102323009 A CN102323009 A CN 102323009A CN 201110248222 A CN201110248222 A CN 201110248222A CN 201110248222 A CN201110248222 A CN 201110248222A CN 102323009 A CN102323009 A CN 102323009A
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- blower fan
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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 maintenance field, especially a kind of blower fan dynamic balance calibrating method.
Background technology
In the blower fan use, the ruined situation of blower fan transient equilibrium often appears, and the transient equilibrium of blower fan is destroyed and could continues to use after the back needs to proofread and correct usually, at present; The general using dynamic balancing machine is proofreaied and correct the transient equilibrium of blower fan, and there is following problem in this method in trimming process: at first, utilize dynamic balancing machine that timing is carried out in the transient equilibrium of blower fan, must the impeller of blower fan be removed; Install to then on the dynamic balancing machine and just can proofread and correct, correction is installed to impeller on the blower fan, still after accomplishing again; The dismounting of draught fan impeller need spend long time, and impeller is in trimming process, and blower fan can't be worked; Feasible production can not normally be carried out, and causes stopping production, and; The dismounting of impeller need consume lot of manpower and material resources, has increased the production run cost greatly, secondly; Because dynamic balancing machine costs an arm and a leg, a lot of manufacturing enterprises all are not equipped with dynamic balancing machine, in case the transient equilibrium of blower fan is destroyed; Can only impeller be removed and deliver to blower fan manufacturing plant and carry out dynamic balance calibration, the required time is longer, has had a strong impact on the ordinary production of enterprise; Bring tremendous loss to enterprise, and sending producer back to, to proofread and correct required expense also higher, the extra production run cost that increased.
Summary of the invention
Technical matters to be solved by this invention provides a kind of blower fan dynamic balance calibrating method that can shorten correction time.
The technical solution adopted for the present invention to solve the technical problems is: this blower fan dynamic balance calibrating method may further comprise the steps:
A, confirm the uneven point of blower fan, and utilize vialog to measure blower fan because the uneven radial vibration displacement △ that causes;
B, calculate the permission degree of unbalancedness of blower fan and allow remaining amount of unbalance, concrete computing formula is following:
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;
(eper * M)/(r * 2), wherein M is the Workpiece Rotating quality to the remaining amount of unbalance m=of the permission of blower fan, and r is a workpiece radius;
The amount of unbalance of C, calculating blower fan, concrete computing formula is following:
The amount of unbalance m of blower fan "=(m/0.13) * △;
" balancing weight of identical weight is fixed on the uneven off-position of putting the impeller at corresponding 180 ° of angles with balancing weight to the amount of unbalance m of D, cutting and blower fan.
Further be that the method for the imbalance point of definite blower fan is following in the said steps A: open the rated speed of blower fan, with drawing the axle journal of pin near the draught fan impeller axle; After drawing pin and the journal surface of the impeller shaft of rotation contact; Draw pin and stop axle journal, and move, draw pin at the journal surface of impeller shaft many arcs that draw along the axial direction of impeller shaft near impeller shaft; After blower fan stops; Find out the mid point of many drawn arcs in the journal surface of impeller shaft, from above-mentioned mid point, select a median average then, this median average is the uneven point of blower fan.
Further be that said balancing weight is fixed on the off-position of impeller through the mode of welding.
The invention has the beneficial effects as follows: adopt bearing calibration of the present invention that timing is carried out in the blower fan transient equilibrium, need not the impeller of blower fan is removed, can accomplish the dynamically balanced correction of blower fan in the production scene; Shorten correction time greatly, blower fan can be resumed operation in a short period of time, guaranteed normally carrying out of production; And, owing to do not need the dismounting impeller, practiced thrift lot of manpower and material resources; In addition, need not 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 confirm the uneven point of blower fan, can practice thrift cost greatly with geometry instruments such as picture pin, rulers, and simple to operate, convenient and swift.Balancing weight is fixed on the off-position of impeller through the mode of welding, can effectively avoid balancing weight to drop and then destroys the transient equilibrium of blower fan, prolongs 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 synoptic diagram of the uneven point of blower fan;
Be labeled as among the figure: balancing weight 1, impeller 2, impeller shaft 3, axle journal 4, picture pin 5.
Embodiment
Blower fan dynamic balance calibrating method of the present invention may further comprise the steps:
At first, confirm the uneven point of blower fan, and utilize vialog to measure blower fan because the uneven radial vibration displacement △ that causes; The imbalance point of confirming 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, and cost is higher, and the mode of repeatedly counterweight also capable of using is looked for the uneven point of blower fan; Concrete mode is following: at first, utilize vialog to measure the radial vibration displacement of blower fan, distinguish counterweight at the diverse location of impeller 2 then; And detect the radial vibration displacement of blower fan respectively, if detected radial vibration displaced plate ratio before the radial vibration displacement of measuring and the counterweight not, displacement increases the uneven point that maximum balance positions is blower fan; This mode needs repeatedly counterweight and detects, complex operation, and also the position of detected uneven point is also inaccurate; As preferred mode be: the method for imbalance point of confirming blower fan is following: open the rated speed of blower fan, with drawing the axle journal 4 of pin 5 near draught fan impeller axle 3, after axle journal 4 surperficial contacts of drawing pin 5 and the impeller shaft 3 of rotation; Draw pin 5 and stop axle journal 4, and move, because there is amount of unbalance in impeller 2 along the axial direction of impeller shaft 3 near impeller shaft 3; Make impeller shaft 3 that the vibration skew take place in rotation process, when impeller shaft 3 is partial to the position at picture pins 5 places, draws pin 5 and contact with axle journal 4 surfaces of impeller shaft 3; When other directions of impeller shaft 3 deflection, draw pin 5 and do not contact, picture pin 5 arc that draws on axle journal 4 surfaces when drawing pin 5 with axle journal 4 surperficial contacts with axle journal 4 surfaces of impeller shaft 3; After blower fan stops; Find out the mid point of many drawn arcs on axle journal 4 surfaces of impeller shaft 3, from above-mentioned mid point, select a median average then, 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 confirm the uneven point of blower fan, can practice thrift cost greatly with geometry instruments such as picture pin 5, rulers, 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 said blower fan is meant the allowable offset amount of slewing corresponding its balance level rotor under maximum speed; The remaining amount of unbalance of said permission be actual slewing rotor according to its profile and quality requirements, to proofread and correct and reach the remaining unbalance mass, that its corresponding balance level requires.Concrete computing formula is following:
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;
(eper * M)/(r * 2), wherein M is the quality of impeller 2 to the remaining amount of unbalance m=of the permission of blower fan, 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, and the unit of the mass M of impeller 2 is kg, and the unit of the radius r of impeller 2 is mm;
Calculate the amount of unbalance of blower fan then, concrete computing formula is following:
The amount of unbalance m of blower fan "=(m/0.13) * △; The amount of unbalance m of blower fan " unit be mm, the unit of radial vibration displacement △ is mm;
Calculate after the amount of unbalance of blower fan; Blower fan is carried out counterweight; The cutting and the amount of unbalance m of blower fan " balancing weight 1 of identical weight, the off-position that balancing weight 1 is fixed on the impeller 2 at the corresponding 180 ° of angles of uneven point can make blower fan reach balance, and said off-position is meant that impeller 2 does not directly receive the position of wind action; 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.Said balancing weight 1 can be fixed on the off-position of impeller 2 through bolt connection, clamping, multiple mode such as bonding; As preferred mode be: said balancing weight 1 is fixed on the off-position of impeller 2 through the mode of welding; Can effectively avoid balancing weight 1 to drop and cause the transient equilibrium of blower fan to be destroyed, prolong the maintain and replace cycle of blower fan.
Adopt said method that timing is carried out in the blower fan transient equilibrium, need not the impeller 2 of blower fan is removed, can accomplish the dynamically balanced correction of blower fan in the production scene; Shorten correction time, blower fan can be resumed operation in a short period of time, guaranteed normally carrying out of production; And, owing to do not need dismounting impeller 2, practiced thrift lot of manpower and material resources; In addition, need not be equipped with dynamic balancing machine yet, greatly reduce the production run cost.
Specific embodiment: the mass M=10000kg of a typhoon machine 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 typhoon machine is destroyed; At first, confirm the uneven point of blower fan, and utilize vialog to measure blower fan because the uneven radial vibration displacement △=0.10mm that causes; Calculate permission degree of unbalancedness eper=(G * 1000)/(n/10)=(6.3 * 1000)/(the 1000/10)=63 μ m of this typhoon machine then; The remaining amount of unbalance m=of the permission of blower fan (eper * M)/(r * 2)=(63 * 10000)/(1200 * 2)=262.5g then calculates the amount of unbalance m "=(m/0.13) * the amount of unbalance m of △=blower fan " of blower fan=(262.5/0.13) * 0.10=201.9g, calculates the amount of unbalance m of blower fan " after; cutting weight is the balancing weight 1 of 201.9g, and the off-position that balancing weight 1 is fixed on the impeller 2 at the corresponding 180 ° of angles of uneven point can make blower fan reach balance.
Claims (3)
1. blower fan dynamic balance calibrating method is characterized in that may further comprise the steps:
A, confirm the uneven point of blower fan, and utilize vialog to measure blower fan because the uneven radial vibration displacement △ that causes;
B, calculate the permission degree of unbalancedness of blower fan and allow remaining amount of unbalance, concrete computing formula is following:
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;
(eper * M)/(r * 2), wherein M is the Workpiece Rotating quality to the remaining amount of unbalance m=of the permission of blower fan, and r is a workpiece radius;
The amount of unbalance of C, calculating blower fan, concrete computing formula is following:
The amount of unbalance m of blower fan "=(m/0.13) * △;
" balancing weight of identical weight (1) is fixed on the uneven off-position of putting the impeller (2) at corresponding 180 ° of angles with balancing weight (1) to the amount of unbalance m of D, cutting and blower fan.
2. blower fan dynamic balance calibrating method as claimed in claim 1; It is characterized in that: the method for the imbalance point of definite blower fan is following in the said steps A: the rated speed of opening blower fan; To draw the axle journal (4) of pin (5), and after drawing pin (5) and axle journal (4) surface of the impeller shaft (3) of rotation contacts, draw pin (5) and stop axle journal (4) near impeller shaft (3) near draught fan impeller axle (3); And move along the axial direction of impeller shaft (3); Draw pin (5) many arcs that draw on axle journal (4) surface of impeller shaft (3), after blower fan stops, finding out the mid point of many drawn arcs on axle journal (4) surface of impeller shaft (3); From above-mentioned mid point, select a median average then, this median average is the uneven point of blower fan.
3. according to claim 1 or claim 2 blower fan dynamic balance calibrating method, it is characterized in that: said balancing weight (1) is fixed on the off-position of impeller (2) through the mode of welding.
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| CN 201110248222 CN102323009B (en) | 2011-08-24 | 2011-08-24 | Dynamic balance correcting method for fan |
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| CN 201110248222 CN102323009B (en) | 2011-08-24 | 2011-08-24 | Dynamic balance correcting method for fan |
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| CN102323009A true CN102323009A (en) | 2012-01-18 |
| CN102323009B CN102323009B (en) | 2013-06-26 |
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| CN 201110248222 Expired - Fee Related CN102323009B (en) | 2011-08-24 | 2011-08-24 | Dynamic balance correcting method for fan |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943780A (en) * | 2012-12-04 | 2013-02-27 | 王子常 | Fan impeller levelling balancing device |
| CN103115725A (en) * | 2013-01-16 | 2013-05-22 | 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 |
| CN103234703A (en) * | 2013-04-24 | 2013-08-07 | 莱芜钢铁集团有限公司 | Method for solving double-faced dynamic balance of fan vibration |
| CN104330214A (en) * | 2014-08-07 | 2015-02-04 | 郑州大学 | Simple field dynamic balancing method |
| CN104677549A (en) * | 2013-11-27 | 2015-06-03 | 上海宝钢工业技术服务有限公司 | On-line fast balance correcting method of COG (coke oven gas) pressurizing fan |
| CN105004483A (en) * | 2015-06-08 | 2015-10-28 | 江苏通达动力科技股份有限公司 | Method of repairing the exceeded amount of unbalance of a motor rotor |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 (4)
| 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 |
| 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 |
-
2011
- 2011-08-24 CN CN 201110248222 patent/CN102323009B/en not_active Expired - Fee Related
Patent Citations (4)
| 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 |
| 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 |
|---|
| 严普强: "关于动平衡校验中一些概念和计算方法的讨论", 《试验技术与试验机》 * |
| 段学锋: "选粉机转子不平衡量的确定", 《四川水泥》 * |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943780B (en) * | 2012-12-04 | 2015-05-20 | 吴小江 | Fan impeller levelling balancing device |
| CN102943780A (en) * | 2012-12-04 | 2013-02-27 | 王子常 | Fan impeller levelling balancing device |
| CN103115725A (en) * | 2013-01-16 | 2013-05-22 | 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 |
| 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 |
| CN103234703A (en) * | 2013-04-24 | 2013-08-07 | 莱芜钢铁集团有限公司 | Method for solving double-faced dynamic balance of fan vibration |
| 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 |
| CN104677549A (en) * | 2013-11-27 | 2015-06-03 | 上海宝钢工业技术服务有限公司 | On-line fast balance correcting method of COG (coke oven gas) pressurizing fan |
| 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 |
| CN104330214A (en) * | 2014-08-07 | 2015-02-04 | 郑州大学 | Simple field dynamic balancing method |
| 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 |
| CN105004483A (en) * | 2015-06-08 | 2015-10-28 | 江苏通达动力科技股份有限公司 | Method of repairing the exceeded amount of unbalance of a motor rotor |
| 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 |
| 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 |
| 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 |
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