Calculation method of inner wall stress of coke tower

A coke tower and stress technology, which is applied in the calculation of the inner wall stress of the coke tower, can solve problems such as difficult stress calculations, and achieve the effect of reducing monitoring costs
CN107063541BActive Publication Date: 2019-06-25GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST +1
3 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUANGZHOU SPECIAL PRESSURE EQUIP INSPECTION & RES INST
Publication Date
2019-06-25

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a coke tower inner wall stress calculation method. The method comprises steps: hoop strain epsilon(theta)o and axial strain epsilon(z)o data of an outer wall measurement point on the coke tower are acquired; according to the hoop strain epsilon(theta)o and axial strain epsilon(z)o data, the outer wall hoop stress sigma(theta)o of the outer wall measurement point on the coke tower is calculated and acquired; the outer wall hoop stress sigma(theta)o is equal to outer wall thermal stress sigmaTo, the change rate capped tau of a temperature difference between the inner wall and the outer wall along with time is calculated and acquired through a thermal stress formula; according to the change rate capped tau of the temperature difference between the inner wall and the outer wall along with the time and the inner wall hoop stress sigma(theta)i equal to the inner wall thermal stress sigmaTi, the inner wall hoop stress sigma(theta)i is calculated and acquired through the thermal stress formula. The coke tower inner wall stress calculation method is high in precision and low in cost.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of petrochemical industry, in particular to a method for calculating the inner wall stress of a coke tower. Background technique

[0002] The coke tower is the key equipment in the delayed coking process, and it is also a tower pressure vessel in the oil refining industry. During service, it undergoes cyclic heating and cooling, so that the medium carried by the container changes from gaseous to liquid to solid. In this process, the tower wall of the coke tower will experience problems such as swelling and cracking after several cycles. In order to evaluate and predict the fatigue damage of the coke drum, it is usually necessary to accurately grasp the wall stress of the coke drum, but due to the irregularity of the local geometric shape of the coke drum and the complexity of the working conditions, it is difficult Simulation for accurate stress calculations.

[0003] According to the data of three large-scale surve...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More