模压压力对反作用爆破片爆破压力的影响

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processes
Article
Influence of Moulding Pressure on the Burst Pressure of
Reverse-Acting Rupture Discs
Lili Liu
1,2
, Chenxing Yuan
1
, Wei Li
1,
*, Beibei Li
1
and Xiumei Liu
1

 
Citation: Liu, L.; Yuan, C.; Li, W.; Li,
B.; Liu, X. Influence of Moulding
Pressure on the Burst Pressure of
Reverse-Acting Rupture Discs.
Processes 2021, 9, 1775. https://
doi.org/10.3390/pr9101775
Academic Editor: Arkadiusz Gola
Received: 10 August 2021
Accepted: 29 September 2021
Published: 4 October 2021
Publishers Note: MDPI stays neutral
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Copyright: © 2021 by the authors.
Licensee MDPI, Basel, Switzerland.
This article is an open access article
distributed under the terms and
conditions of the Creative Commons
Attribution (CC BY) license (https://
creativecommons.org/licenses/by/
4.0/).
1
School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China;
lily@basco.cc (L.L.); ts19050078a31@cumt.edu.cn (C.Y.); libeibeimail@163.com (B.L.);
liuxm@cumt.edu.cn (X.L.)
2
Xuzhou Bafang Safety Device Co., Ltd., Xuzhou 221141, China
* Correspondence: liwei_cmee@163.com; Tel.: +86-13003519266
Abstract:
Rupture discs, also called bursting discs, are widely used in pressure vessels, pressure
equipment, and pressure piping in process industries, such as nuclear power, fire protection, and
petrochemical industries. To explore the relationship between the burst pressure of reverse-acting
rupture discs and their production, two common manufacturing methods, air pressure moulding
and hydraulic moulding, were compared in this study. Reverse-acting rupture discs that complied
with the form recommended by API 520-2014 were prepared with four release diameters, and burst
pressure tests were carried out. These results showed an obvious negative correlation between
the forming pressure of rupture discs and their actual burst pressure for all experimental samples.
Further study showed that the main reason for this correlation was a reduction in thickness at the top
of the rupture disc caused by large plastic deformation during compression moulding. To explore
the relationship between the thickness reduction effect and moulding method, this study defined the
“relative ratio of thickness reduction” and concluded that the effect of decreasing the thickness of
the rupture disc was more obvious for rupture disc substrates with less flexural rigidity. The above
conclusions have important significance for guiding the control of the burst pressure of rupture discs.
Keywords:
process safety equipment; rupture disc; burst pressure; forming pressure; thickness
thinning ratio
1. Introduction
Rupture discs are important protective devices used to safeguard pressure vessels and
fluid pipelines from overpressure hazards; they have been widely used in major industrial
systems and production facilities [
1
4
]. Rupture discs and pressure relief valves (PRV) are
both overpressure relief devices applied to high-pressure equipment, but the application
scenarios of the two are different. The PRV reduces the excessive pressure in the equipment
through the automatic opening of the valve to discharge the gas. The device itself can be
reused many times, but the pressure relief response is slow. It is suitable for equipment
with relatively clean media such as air and water vapor [
5
]. Rupture discs use blasting
elements to break and discharge gas under higher pressure. The sealing performance is
good and the pressure relief response is faster. Compared with PRV, rupture discs have
the advantages of simple structure, sensitivity, reliability, economy, no leakage, and strong
adaptability. In some equipment where the pressure may rise sharply, as well as in the face
of high-viscosity slurry fluids or for corrosive fluids, it is more reasonable to use rupture
discs as safety devices [
6
,
7
]. The rupture disc is a nonerasable component, and its design is
simple. The commercial prospects for rupture discs are broad because the manufacturing
methods for rupture disks are convenient and rupture discs allow leakage of overpressure
media without causing secondary damage [
8
]. To facilitate practical applications of rupture
discs, the typical industrial standard [
9
,
10
] emphasizes the pressure limitation of the entire
pressure relief system, and most researchers and engineers propose specific indicators
Processes 2021, 9, 1775. https://doi.org/10.3390/pr9101775 https://www.mdpi.com/journal/processes
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