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Research Papers: Operations, Applications and Components

Reliability Study on a New Integrity Pressure Relief Device in Nonrefillable Steel Gas Cylinder

[+] Author and Article Information
Weiya Jin

Institute of Process Equipment and
Control Engineering,
Zhejiang University of Technology,
Chaowang Road 18#,
Hangzhou 310032, Zhejiang, China
e-mail: jinweiya@zjut.edu.cn

Yuebing Li

Institute of Process Equipment and
Control Engineering,
Zhejiang University of Technology,
Chaowang Road 18#,
Hangzhou 310032, Zhejiang, China
e-mail: ybli@zjut.edu.cn

Mingjue Zhou

Institute of Process Equipment and
Control Engineering,
Zhejiang University of Technology,
Chaowang Road 18#,
Hangzhou 310032, Zhejiang, China
e-mail: zhoumingjue@zjut.edu.cn

Zengliang Gao

Institute of Process Equipment and
Control Engineering,
Zhejiang University of Technology,
Chaowang Road 18#,
Hangzhou 310032, Zhejiang, China
e-mail: zlgao@zjut.edu.cn

1Corresponding author.

Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received February 14, 2018; final manuscript received July 28, 2018; published online August 22, 2018. Assoc. Editor: Steve J. Hensel.

J. Pressure Vessel Technol 140(5), 051602 (Aug 22, 2018) (8 pages) Paper No: PVT-18-1041; doi: 10.1115/1.4041060 History: Received February 14, 2018; Revised July 28, 2018

A new integrity pressure relief device in a nonrefillable steel gas cylinder is proposed and tested. Instead of a rupture disk welded on the opening of the head, the new integrity pressure relief device is machined by stamping a circular groove on the vessel head, which not only avoids an additional penetration on the head but also reduces the manufacture cost. To ensure the safety and reliability of the device, its performance is evaluated using a reliability method based on material properties and burst pressure. The effect of stamping pressure on the groove depth is investigated, and then, the material properties taken from different locations are tested. Tensile properties taken along the circumferential direction of the cylinder are suggested to be used to predict burst pressure of the new integrity pressure relief device. The tolerance of the burst pressure in a percentage is analyzed, and a probabilistic model is built. The reliability analysis shows that the batch of cylinders with the integrity pressure relief device has a very high qualified probability.

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References

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Figures

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Fig. 5

Processing of the integrity pressure relief device

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Fig. 4

The integrity pressure relief device

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Fig. 3

Installation of rupture disk on nonrefillable steel gas cylinder

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Fig. 2

Typical rupture disk

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Fig. 1

Design of the DOT-39 refrigerant cylinder

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Fig. 6

Microscope measured photos for groove dimensions (stamping pressure ps = 6.2 MPa)

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Fig. 7

Normalized thickness versus stamping pressure

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Fig. 8

Burst pressure versus stamping pressure

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Fig. 11

Hardness test location

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Fig. 12

Semi-empirical coefficient under different stamping pressures

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Fig. 13

Statistical analysis for burst pressure

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Fig. 9

Location and dimension of tensile specimens

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Fig. 10

Tensile test for no. 4 specimen

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Fig. 14

Specified burst pressure and performance tolerance with a coincident temperature

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Fig. 15

Comparison of cylinder burst pressure with/without pressure relief device

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