CN1055678A - The integral full speed dynamic balance method of double support cantilever centrifugal - Google Patents
The integral full speed dynamic balance method of double support cantilever centrifugal Download PDFInfo
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- CN1055678A CN1055678A CN 90109246 CN90109246A CN1055678A CN 1055678 A CN1055678 A CN 1055678A CN 90109246 CN90109246 CN 90109246 CN 90109246 A CN90109246 A CN 90109246A CN 1055678 A CN1055678 A CN 1055678A
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- centrifuge
- balance
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- rotary drum
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Abstract
The present invention carries out the monoplane to double support cantilever centrifugal to proofread and correct dynamic balance method.Be characterized in and dismantle bowl directly in the enterprising action balance of complete machine in the centrifuge working site.This law not only can be used for centrifuge manufacturing factory and the product centrifuge is carried out dynamic balancing, the vast centrifuge user of more suitable no dynamic balancing machine.This law thoroughly solution balance quality that balance reached on balancing machine has higher balance quality with the inconsistent problem of real balance precision.Whole equilibrium process is no more than one hour, can effectively reduce down period.Apparatus of the present invention are simple, and reduced investment, instant effect are easy to apply.
Description
The invention belongs to the dynamic balancing technique of tumbler.Specifically, it relates to the dynamic balance method of double support cantilever centrifugal.
At industrial departments such as chemical industry, pharmacy, light industrys, the double support cantilever centrifugal of extensive use, because for a long time with corrosive medium contact and frequent reinforced, discharging, cause the rotary drum of centrifuge to be corroded and wear and tear, this type of corrosion and wearing and tearing are axial symmetry fully, must cause the imbalance of rotary drum, produce vibration when centrifuge is rotated.In order to eliminate the vibration of this class, need usually with dynamic balancing machine every year to rotary drum balance at least again once.But use the factory of this class centrifuge, generally do not possess dynamic balancing machine, need that rotary drum is pulled down the unit that delivers to dynamic balancing machine from centrifuge and do dynamic balancing.This not only will pay expensive dynamic balancing expense and traffic expense, and centrifuge can not be turned round for a long time and influences production.In addition, on dynamic balancing machine, bowl is carried out balance, because the mandrel of using on the balancing machine is different with the matching requirements between the rotating shaft of this machine with bowl with the matching requirements between the bowl, the support conditions on dynamic balancing machine also is different from actual support conditions.All of these factors taken together can be created in and reached higher balance quality on the dynamic balancing machine, and under centrifuge real-world operation condition, the situation that balance quality can descend again.
The purpose of this invention is to provide and a kind ofly carry out dynamic balance method for double support cantilever centrifugal, bowl can be pulled down from this machine, just can directly carry out dynamic balancing to rotary drum to the centrifuge complete machine under the working speed condition at centrifuge running scene.
The present invention adopts single measuring point, single rectifying plane complete machine full speed dynamic balance method.The objective of the invention is by following method, comprise the following steps to realize.
(1) finishes the wiring work of sensor and vialog, PH phasemeter and flash lamp;
(2) open the centrifuge end cap, make the isodisperse word mark in end, rotary drum top;
(3) sensor is placed on the shell place of fore bearing;
(4) flash lamp is aimed at the five equilibrium mark that is placed on rotary drum top end face;
(5) centrifuge is started to working speed;
(6) on vialog, read amplitude A
1;
(7) the frequency-selecting knob of control phase instrument, the reading that pointer is indicated on the PH phasemeter gauge outfit is maximum (finishing frequency-selecting);
(8) regulate the flash of light fine setting, make the flash lamp flash of light, write down the numeral of its relative phase of expression that shows in the flash of light of end, rotary drum top, make this numeral be a, its pairing relative phase angle is ∠ α;
(9) shut down, arbitrarily angled place adds test mass P at rotary drum top end face;
(10) once more with the centrifuge raising speed to working speed, repeat (6)～(8) step, record amplitude A
2And the digital b of the relative phase of flash of light demonstration, its pairing relative phase angle is β, and gets corresponding central angle ∠ γ=∠ β-∠ α;
(11) shut down, make the OAB vector triangle, wherein OA=A
1, OB=A
2,
With
Between angle be ∠ γ, the angle between OA and AB two line segments is ∠ θ;
(12) try to achieve amount of unbalance G=(OA)/(AB) P;
(13) taking off test mass P, is that the counterweight of G is added in the direction of ordering to b along a point from the point of former placement test mass P and turns over place, θ angle with gravimetric value, and then all the balance work are finished.
A
1, A
2, ∠ α, ∠ β and P value can import in the calculator successively, above-mentioned (11)～(12) step can be tried to achieve G and ∠ θ value by the program that is stored in the calculator.
The present invention can carry out effective monoplane correction balance under the condition at complete machine at full speed to double support cantilever centrifugal.Can not will bowl pull down from centrifuge, directly carry out balance in the centrifuge working site.
Description of drawings:
Figure 1 shows that balance test device schematic diagram of the present invention.
Fig. 2 represents 20 branch marks such as grade and each the test point relative phase angle schematic diagram done on the end face of rotary drum top.
The triangle polar plot of the amplitude that unbalance vibration was produced when Fig. 3 represented to carry out balance and the relation at phase angle.
Further specify the testing arrangement and the test philosophy of this method with reference to accompanying drawing.
Bowl 5 is supported by fore bearing 7, rear bearing 8 as shown in Figure 1, by motor 9 driven rotary.Fig. 1 also shows the connecting relation that is used to carry out between the dynamically balanced tester.Sensor 3 is contained on the shell of fore bearing 7, the vibration that produces owing to imbalance when experiencing centrifuge work, and change the signal of telecommunication into and pass to vialog 1, this signal is input phase instrument 2 after amplifying, the effect of PH phasemeter is to be equivalent to the amplitude maximum in a flash, produce an electric pulse and go trigger flashing lamp 4 transient flash, flash lamp 4 is installed, aim at the five equilibrium mark position of bowl top end face 6.Rotary drum whenever rotates a circle, corresponding above-mentioned transient flash once, (this instantaneous time that is equivalent to drum rotating amplitude maximum in one week).Hence one can see that, the time sees that in flash of light numeral on the end face of rotary drum top is as static.Like this, both can determine the size of amount of unbalance, can determine the position of amount of unbalance again, carry out assembled machine balance.
Fig. 2 shows when carrying out balance the reference numerals by each shining point place of operating procedure gained.A is relative phase angle that operating procedure (8) the is read numeral on the rotary drum end face when being ∠ α, and b is relative phase angle that operating procedure (10) the is read numeral on the rotary drum end face when being ∠ β.O is the center of circle of rotary drum top end face.∠ γ is the poor of ∠ β and ∠ α, i.e. ∠ γ=∠ β-∠ α.
It is described that Fig. 3 symbolic significance is same as operating procedure (11).
Use method of the present invention, in the laboratory WG-800 horizontal scraper discharging centrifuge homemade in a collection of is carried out assembled machine balance.Before balance, all greater than 35 μ, behind assembled machine balance, the amplitude that records at two bearing places is all less than 5 μ to the amplitude that records on two bearings, its corresponding vibration severity is 0.75mm/s, is significantly less than the vibration severity value of the centrifuge high-class product of ISO international standard regulation.
The laboratory is again once to the horizontal piston windrow of homemade WH-800 centrifuge, because of corrosion and wearing and tearing cause the serious unbalance assembled machine balance that carries out, after to the heavy 304g of rotary drum top rectifying plane weldering, amplitude is reduced to 4.2 μ, and its vibration severity also is lower than the high-class product standard value of the centrifuge complete machine oscillation earthquake intensity of ISO international standard regulation.
Facts have proved that method of the present invention has the following advantages:
1. device is simple. The present invention only needs conventional sensor, vialog, PH phasemeter and flash lamp, and reduced investment, instant effect are easy to apply;
2. balance quality height. Because rotary drum is to carry out balance at complete machine, can thoroughly solve balance reaches on balancing machine balance quality with the inconsistent problem of real balance precision;
3. can be used for field balancing. The present invention carries out balance external except can be used for centrifuge manufacturing factory to the product centrifuge, more meaningfully can be widely used in the users of this type of centrifuge. After the long period running, because the centrifuge that a variety of causes causes balance quality obviously to descend in the situation of not dismantling rotary drum, is realized Fast-Balance. Whole equilibrium process (comprising test and counterweight) is no more than one hour. Thereby to improving the utilization rate of centrifuge, reducing down period, be very useful with the dynamic characteristics of improving centrifuge the service life that increases driving member.
Claims (1)
1, a kind of dynamic balance method of double support cantilever centrifugal is characterized in that comprising the following steps:
(1) finishes the wiring work of sensor and vialog, PH phasemeter and flash lamp;
(2) open the centrifuge end cap, make the isodisperse word mark in end, rotary drum top;
(3) sensor is placed on the shell place of fore bearing;
(4) flash lamp is aligned in the five equilibrium mark of rotary drum top end face;
(5) centrifuge is started to working speed;
(6) on vialog, read amplitude A
1
(7) the frequency-selecting knob of control phase instrument, the reading that pointer is indicated on the PH phasemeter gauge outfit is maximum (finishing frequency-selecting);
(8) regulate the flash of light fine setting, make the flash lamp flash of light, write down digital a that the flash of light of end, rotary drum top shows and putting the relative phase angle a at place;
(9) shut down, arbitrarily angled place adds test mass P at rotary drum top end face;
(10) once more with the centrifuge raising speed to working speed, repeat the step of (6)～(8), record amplitude A
2And the digital b of flash of light demonstration and the relative phase angle β at corresponding b point place, and try to achieve central angle ∠ γ=∠ β-∠ α;
(11) shut down, make the OAB vector triangle, wherein OA=A
1, OB=A
2,
With
Between angle be ∠ γ, between OA and AB two line segments angle be θ;
(12) try to achieve amount of unbalance G=
P;
(13) taking off test mass P is that the counterweight of G is added in from the point of former placement test mass P and turns over place, θ angle along a to the direction of b with weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109246 CN1055678A (en) | 1990-11-14 | 1990-11-14 | The integral full speed dynamic balance method of double support cantilever centrifugal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90109246 CN1055678A (en) | 1990-11-14 | 1990-11-14 | The integral full speed dynamic balance method of double support cantilever centrifugal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1055678A true CN1055678A (en) | 1991-10-30 |
Family
ID=4881339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90109246 Pending CN1055678A (en) | 1990-11-14 | 1990-11-14 | The integral full speed dynamic balance method of double support cantilever centrifugal |
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|---|---|
| CN (1) | CN1055678A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915640A (en) * | 2010-08-02 | 2010-12-15 | 浙江大学 | Biaxial adaptive dynamic balance executing method for centrifuge |
| CN106197934A (en) * | 2016-08-23 | 2016-12-07 | 青岛双星轮胎工业有限公司 | Tire shock resistance detection rotary drum |
| CN104209195B (en) * | 2014-07-15 | 2017-01-18 | 浙江大学 | Dynamic balance method for whole machine of scroll discharge sedimentary centrifuge under water filling condition |
| CN107670855A (en) * | 2017-12-04 | 2018-02-09 | 浙江医院 | A kind of high-precision medicinal blood centrifuge speed automatic calibrator |
-
1990
- 1990-11-14 CN CN 90109246 patent/CN1055678A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101915640A (en) * | 2010-08-02 | 2010-12-15 | 浙江大学 | Biaxial adaptive dynamic balance executing method for centrifuge |
| CN104209195B (en) * | 2014-07-15 | 2017-01-18 | 浙江大学 | Dynamic balance method for whole machine of scroll discharge sedimentary centrifuge under water filling condition |
| CN106197934A (en) * | 2016-08-23 | 2016-12-07 | 青岛双星轮胎工业有限公司 | Tire shock resistance detection rotary drum |
| CN106197934B (en) * | 2016-08-23 | 2018-09-25 | 青岛双星轮胎工业有限公司 | Tire shock resistance detects rotary drum |
| CN107670855A (en) * | 2017-12-04 | 2018-02-09 | 浙江医院 | A kind of high-precision medicinal blood centrifuge speed automatic calibrator |
| CN107670855B (en) * | 2017-12-04 | 2019-04-19 | 浙江医院 | A kind of high-precision medicinal blood centrifuge speed automatic calibrator |
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