GB/T 28695-2012Standard of strength calculation for centrifugal drum (English PDF)

1 Scope

This standard specifies the assessment hoop stress is calculated when the centrifuge drum rotating drum casing, select a variety of factors, drum strength,

Finite Element Analysis Method of guiding principles and fatigue strength assessment.

This standard applies to circumferential and axial bearing uniform thickness uniform cylindrical or conical filter drum or drum housing settlement.

Drum can be lined, screen or without lining, mesh. Drum material must be ductile metal material of uniform composition, and has in the selection test

Into account the operating temperature, the material medium.

This standard does not apply to the centrifuge drum for the following conditions.

a) the drum wall thickness ratio delta and radius/r1 > 0.15;

b) Load the drum is less than the kinetic energy of 750J;

c) motor drive home dehydrator;

d) drum circumferential speed is greater than 300m/s;

e) specific to the nuclear industry in the field of high-speed centrifuges.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated edition applies to this article

Member. For undated references, the latest edition (including any amendments) applies to this document.

RT Test Method. Test Part 1 GB/T 228.1 metal material tensile

GB/T 3075 metal fatigue test axial force control method

JB4732 steel pressure vessel analysis and design standards

JB/T9095 centrifuge separator Weldment forging NDT routine

3 Symbol

The following symbols apply to this document.

a. Strengthening drum hoop height, m;

A. drum hoop strengthen cross-sectional area, m2;

b1, b2. drum wall adjacent two holes center distance, m;

c. enhanced hoop spacing, m;

d. hole diameter, m;

e. reinforcing ring thickness (radial), m;

G. Maximum allowable quantity (mass), kg;

h. Drum effective height, m;

H. conical drum bus length, m;

K. weld and opening coefficients;

K1. Coefficient of welded joints;