Analysis of Controllable Stress Distribution and Optimal Design of Flat Steel Ribbon Wound Pressure Vessel

2000 ◽  
Vol 122 (2) ◽  
pp. 186-191 ◽  
Author(s):  
Zheng Chuanxiang
Keyword(s):  
High Pressure ◽  
Optimal Design ◽  
Stress Distribution ◽  
Pressure Vessel ◽  
Vessel Wall ◽  
High Pressure Vessel ◽  
Flat Steel ◽  
Winding Angle ◽  
Steel Ribbon

Stress distribution of high pressure vessel wall is not even. How to appropriately distribute stresses on high pressure vessel wall is our goal. It can be realized in flat steel ribbon wound pressure vessel (FSRWPV). The paper shows that stress can be distributed in someway on FSRWPV wall by controlling prestress and winding angle of its flat steel ribbon. An example is given at the end. [S0094-9930(00)00902-1]

Heat-transfer analysis of flat steel ribbon-wound cryogenic high-pressure vessel

2008 ◽  
Vol 222 (9) ◽  
pp. 1745-1751
Author(s):  
Z P Chen ◽  
C L Yu ◽  
J Y Zheng ◽  
G H Zhu
Keyword(s):  
Heat Transfer ◽  
High Pressure ◽  
Pressure Vessel ◽  
Heat Transfer Process ◽  
Heat Transfer Analysis ◽  
Experimental Investigations ◽  
Transfer Model ◽  
High Pressure Vessel ◽  
Flat Steel ◽  
Steel Ribbon

In the past 40 years, more than 7000 layered vessels using flat ribbon-wound cylindrical shells have been manufactured in China. Theoretical as well as experimental investigations show that there are distinct economical and engineering advantages in using such vessels. In this paper, based on the analysis of the heat transfer process in a flat steel ribbon-wound liquid hydrogen high-pressure vessel, a heat transfer model of the walls of the shell and head has been set up. The temperature difference among the interfaces, the heat transfer through the shell and head, and the evaporation rate of the vessel under a steady heat-flow condition has been calculated. The numerical calculations show that such a structure meets the design requirements.

Modeling and Optimization of Ultra High Pressure Vessel With Self-Protective Flat Steel Ribbons Wound and Tooth-Locked Quick-Actuating End Closure

2008 ◽  
Author(s):  
Xin Ma ◽  
Zhongpei Ning ◽  
Honggang Chen ◽  
Jinyang Zheng
Keyword(s):  
High Pressure ◽  
Fatigue Life ◽  
Pressure Vessel ◽  
Design Method ◽  
Structural Parameters ◽  
Three Dimensional ◽  
Peak Stress ◽  
High Pressure Vessel ◽  
Ultra High Pressure ◽  
Flat Steel

Ultra-High Pressure Vessel (UHPV) with self-protective Flat Steel Ribbons (FSR) wound and Tooth-Locked Quick-Actuating (TLQA) end closure is a new type of vessel developed in recent years. When the structural parameters of its TLQA and Buttress Thread (BT) end closure are determined using the ordinary engineering design method, Design by Analysis (DBA) shows that the requirement on fatigue life of this unique UHPV could hardly be satisfied. To solve the above problem, an integrated FE modeling method has been proposed in this paper. To investigate the fatigue life of TLQA and BT end closures of a full-scale unique UHPV, a three-dimensional (3-D) Finite Element (FE) solid model and a two-dimensional (2-D) FE axisymmetric model are built in FE software ANSYS, respectively., Nonlinear FE analysis and orthogonal testing are both conducted to obtain the optimum structure strength, in which the peak stress in the TLQA or BT end closure of the unique UHPV is taken as an optimal target. The important parameters, such as root structure of teeth, contact pressure between the pre-stressed collar and the cylinder end, the knuckle radius, the buttress thread profile and the local structure of the cylinder, are optimized. As a result, both the stress distribution at the root of teeth and the axial load carried by each thread are improved. Therefore, the load-carrying capacity of the end closure has been reinforced and the fatigue life of unique UHPV has been extended.

Investigation on the Strength of Ultra High Pressure Vessel Cylinder With Self-Protective Flat Steel Ribbons Wound

2008 ◽  
Author(s):  
Xin Ma ◽  
Jinyang Zheng ◽  
Zhongpei Ning ◽  
Honggang Chen
Keyword(s):  
High Pressure ◽  
Pressure Vessel ◽  
Ultimate Load ◽  
Design Criterion ◽  
Potential Hazard ◽  
Unique Type ◽  
High Pressure Vessel ◽  
Ultra High Pressure ◽  
Load Carrying ◽  
Flat Steel

A unique type of self-protective Ultra-High Pressure Vessel (UHPV) cylinder with helically wound Flat Steel Ribbons (FSR) is proposed. The shielding properties of its self-protection in the hoop and axial directions of a FSR cylinder in the case of fracture failure, as well as quick-actuating of the tooth-locked end closure of this new vessel structure are both expounded. Based on its axial strength, a formula of the ultimate load-carrying capability of FSR layers is derived. The shielding function and self-protective capability of FSR layers to the UHPV cylinder are analyzed quantitatively in detail, and a design criterion is also defined. According to the formula and the design criterion defined in this paper, the predicted ultimate load-carrying capability of the FSR layers is 48.3% higher than that in previous references. Results from burst tests of 6 model vessels show that the brittle failure morphology of UHPV cylinders are changed with FSR layers and the potential hazard of failure of the UHPV is reduced. In addition, the cross fracture of the UHPV cylinder is shielded effectively and the derived formulation on the ultimate load-carrying capability of FSR layers is reasonable. UHPV cylinders designed according to the formula and the criterion can use much fewer FSR layers with the same shielding capability.

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