Ideas and Assumptions of a New Kind Helical Metal Expansion Joints

Kurp, Piotr

doi:10.21741/9781644902059-34

Cited by 4 publications

(4 citation statements)

References 16 publications

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“…Ideas and assumptions about technology were presented in the article [54]. The technology will be briefly described below to introduce the reader to the subject.…”

Section: Technology and Materialsmentioning

confidence: 99%

Experimental Results of Helical Metal Expansion Joints Fabrication

KURP

2023

Quality Production Improvement and System Safety

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Abstract. This paper discusses the technological assumptions for the production of helical metal expansion joint as a new type of expansion joints used to eliminate torsional deformations of industrial pipelines. The method of mechanically assisted laser forming, which was used as a manufacturing technology, was presented as well. Furthermore, technological parameters and experimental results obtained during the fabrication of helical metal expansion joints were presented. Mainly presented and discussed are the results such as: obtained geometry, forces necessary to produce the product, processing temperature, strain rate and others. Satisfactory treatment results were obtained, which are illustrated below.

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“…Ideas and assumptions about technology were presented in the article [54]. The technology will be briefly described below to introduce the reader to the subject.…”

Section: Technology and Materialsmentioning

confidence: 99%

Experimental Results of Helical Metal Expansion Joints Fabrication

KURP

2023

Quality Production Improvement and System Safety

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“…The technological assumptions for the manufacturing of the helical expansion joints are presented in the paper [11]. To introduce the reader to the issue, a synthetic description of the technology is presented below.…”

Section: Description Of Technologymentioning

confidence: 99%

Laser Forming in the Use of Helical Metal Expansion Joints Manufacturing

KURP

2023

METAL Conference Proeedings

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In the paper, the author presented the technological assumptions for the production of a helical metal expansion joint. Currently produced expansion joints have bellows or lens shapes. These types of expansion joint can only carry lateral, angular and axial deformations. A helical metal expansion joint is a new type of expansion joints that can compensate for torsional deformations of industrial pipelines, which are the result of the installed armature in the piping system. The authors presented a method of mechanically assisted laser forming, which was used as a manufacturing technology for this type of element. This technology combines laser heating of an element in the form of a pipe (implemented with a carbon dioxide laser along a given trajectory in order to plasticize the heating zone), with the simultaneous application of an external force, which is intended to plastic deform the element on its circumference. The carried out experiment consisted of the selection and control of the process temperature using an integrated optical pyrometer, based on which the laser power was controlled. According to the preliminary experiments, the compression speed of the element was selected. Compression was carried out using a mechanical actuator. During the process, the compression force that caused the deformation of the element was recorded. Experimental results obtained during the manufacturing of helical metal expansion joints are presented. Mainly, the results are presented and discussed, such as: obtained geometry, forces needed to manufacture the element, processing temperature, strain rate and others.

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“…Heat exchangers are often integrated into piping systems, and temperature differences can cause these installations to expand and contract. Metal expansion joints are used to absorb thermal deformations of the installation and prevent damage to structures and devices [21,22]. Metal expansion joints play an important role in ensuring the stability and protection of the heat exchangers themselves and the piping connections, especially when temperature changes occur within the system.…”

Section: Introductionmentioning

confidence: 99%

Pool Boiling of Ethanol on Copper Surfaces with Rectangular Microchannels

Kaniowski,

Pastuszko,

Dragašius

et al. 2023

Energies

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In this paper, pool boiling of ethanol at atmospheric pressure was analyzed. The enhanced surfaces were made of copper, on which grooves with a depth ranging from 0.2 to 0.5 mm were milled in parallel. The widths of the microchannels and the distances between them were 0.2 mm, 0.3 mm and 0.4 mm, respectively. The highest heat transfer coefficient, 90.3 kW/m2K, was obtained for the surface with a microchannel depth of 0.5 mm and a width of 0.2 mm. The maximum heat flux was 1035 kW/m2. For the analyzed surfaces, the maximum heat flux increase of two and a half times was obtained, while the heat transfer coefficient increased three-fold in relation to the smooth surface. In the given range of heat flux 21.2–1035 kW/m2, the impact of geometric parameters on the heat transfer process was presented. The diameters of the departing bubbles were determined experimentally with the use of a high-speed camera. A simplified model was proposed to determine the diameter of the departure bubble for the studied surfaces.

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Ideas and Assumptions of a New Kind Helical Metal Expansion Joints

Cited by 4 publications

References 16 publications

Experimental Results of Helical Metal Expansion Joints Fabrication

Experimental Results of Helical Metal Expansion Joints Fabrication

Laser Forming in the Use of Helical Metal Expansion Joints Manufacturing

Pool Boiling of Ethanol on Copper Surfaces with Rectangular Microchannels

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