Particle reduction in high temperature sulfuric acid using PTFE membrane filter and low pulsation bellows pump

Takakura, Tomoyuki; Tokuno, Katsuhiko; Tsuzuki, Shuichi; Yamazaki, Kenji; Tomotoshi, Ai; Teshima, Kazukiyo

doi:10.1109/asmc.2018.8373148

Cited by 2 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The essence of improving service life of stressed components is to reduce the maximum stress, 6 and engineers always use stronger materials or improve the structure to achieve it. In terms of materials, bellows equipped on bellows pump is mainly fabricated of polytetrafluoroethylene (PTFE), 7 which increases the life of bellows with its high chemical resistance and good endurance on repeated alternating loads and deformations. However, even with the same material, different structures will also significantly affect the stress of the bellows.…”

Section: Introductionmentioning

confidence: 99%

The optimization of bellows convolutions in bellows pump for better stress distribution

Gao

Ruan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

Bellows pump has been widely used for chemical transportation with excellent elasticity and seal ability of the core component bellows. Nevertheless, for repeated alternating compression and expansion, bellows convolutions, that is, the maximum stress points, are at risk of fatigue rupture, which leaves a safety hazard for practical applications. Though a special bellows shape with non-constant wall thickness was proposed as an effective method to strengthen the convolutions, it also affects other characteristics of bellows, such as stiffness, single-stroke displacement, and size, which are equally important for the bellows pump. This article designs a fine-tuned convolution structure on the premise of avoiding its effect on volume properties of bellows. Limiting the value of variables by the stability of bellows stiffness, the structure parameters are optimized with the combination of the finite element method (FEM) and whale optimization algorithm. To ensure the accuracy of the FEM, the stress–strain curve of bellows material and the bellows axial stiffness is measured. Finally, digital image correlation is employed to obtain the strain at convolutions before and after the optimization, and the significant reduction of the strain verifies the effectiveness of the optimization. We believe that this method is valuable for optimizing stress distribution and guiding the design of longer-life pump bellows.

show abstract

Section: Introductionmentioning

confidence: 99%

The optimization of bellows convolutions in bellows pump for better stress distribution

Gao

Ruan

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

Modeling of pneumatic dual reciprocating bellows pump with flexible linkage

Gao

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

Pneumatic dual reciprocating bellows pump has been widely used in chemical transportation due to its good sealing and anticorrosion performances. Nevertheless, the large outlet pulsation limits its performances on precise transportation and control of the fluid. Although the design of employing flexible linkage between the bellows has been proposed as an effective solution for this shortcoming, the design, manufacture, and control of the pump also become much more complicated. This paper presents a mathematical model to formulate the effects of structural, geometric, and control parameters to the output pulsation of pneumatic dual reciprocating bellows pump with flexible linkage. It is a dynamic model unifying several sub-models expressing the pneumatic, hydraulic, and mechanical parts in the pump, respectively. To ensure the accuracy, some special experiments are also employed to identify some key parameters in the model that cannot be determined directly. In addition, finite difference method is employed to solve the nonlinear equations. The model is well verified by comparing its computation results with experimental data. We believe that this study is valuable for guiding the design of pneumatic dual reciprocating bellows pump and optimizing its output pulsation.

show abstract

Particle reduction in high temperature sulfuric acid using PTFE membrane filter and low pulsation bellows pump

Cited by 2 publications

References 0 publications

The optimization of bellows convolutions in bellows pump for better stress distribution

The optimization of bellows convolutions in bellows pump for better stress distribution

Modeling of pneumatic dual reciprocating bellows pump with flexible linkage

Contact Info

Product

Resources

About