Development of a Numerical Method for Calculating a Gas Supply System during a Period of Change in Thermal Loads

Fetisov, Vadim; Shalygin, A V; Modestova, Svetlana A.; Tyan, Vladimir K.; Shao, Chenhui

doi:10.3390/en16010060

Cited by 17 publications

(12 citation statements)

References 52 publications

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“…It is conspicuous that the deformation values of the specimens are practically equal for different times of saturation with hydrogen, and there is a significant variation in the established deformation values (0.46, 0.88, and 1.2 × 10 −3 m); also conspicuous are the amounts of hydrogen released during annealing (41,117, and 137 × 10 −5 m 3 /kg) of three identical specimens (no. 1, no.…”

Section: Deformation 10 −3 M Aftermentioning

confidence: 93%

“…The author of [39] also concludes that the lattice distortion and cold work (hardening) do increase the hydrogen absorption by steel, but reduce the diffusion of hydrogen. As a result, heat treatment used for the pipes used in underground pipelines (the removal of residual stresses/strains) [40,41] increases the diffusion of hydrogen, but reduces its absorption in the metal. (According to [39], hydrogen recombined in internal cavities can generate pressure of "several hundred atmospheres"; however, ".…”

Section: Deformation 10 −3 M Aftermentioning

confidence: 99%

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Using the Magnetic Anisotropy Method to Determine Hydrogenated Sections of a Steel Pipeline

Bolobov

Latipov

Zhukov³

et al. 2023

Energies

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The paper deals with a non-destructive method of detecting hydrogenated sections of pipelines, which is based on variations of the level of mechanical stresses generated in the surface layers of the steel pipe material during its hydrogenation. The use of a magnetoanisotropic method based on the phenomenon of metal magnetoelastic anisotropy development, which consists in the variation of the magnetic properties of ferromagnetic materials in direction and magnitude under the influence of mechanical stresses, is proposed as a way to register that variation. Based on the results of tensile testing of carbon steel plates with measurement of the difference in principal mechanical stresses (DPMS) occurring in metal, as well as experiments on electrolytic hydrogenation of specimens with measurement of the DPMS signal, it was confirmed that when steel structures are saturated with hydrogen, tensile stresses are generated in the surface layers, the magnitude of which increases as the concentration of hydrogen increases in the metal. In this case, it is assumed that the indicated dependence between the hydrogen concentration in the metal and the stresses arising as a result of hydrogenation is linear. For the example of lamellar specimens made of pipe low-carbon steel, the possibility of using the magnetoanisotropic method for registering sections of underground pipelines with a high content of hydrogen is substantiated, which can become the basis for a method of diagnosing sections of pipelines with broken insulation for the possibility of their further operation. The scientific novelty of this article is the establishment of a relationship between the hydrogen content in the metal, the stresses that arise in this case, and the change in the magnetic properties of ferromagnetic materials, characterized by the magnitude of the DPMS signal. This study contributes to the understanding of the process of hydrogenation of metals, and may be useful in detecting and preventing damage to gas and oil pipelines caused by hydrogen embrittlement as a cause of stress corrosion.

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Section: Deformation 10 −3 M Aftermentioning

confidence: 93%

Section: Deformation 10 −3 M Aftermentioning

confidence: 99%

Using the Magnetic Anisotropy Method to Determine Hydrogenated Sections of a Steel Pipeline

Bolobov

Latipov

Zhukov³

et al. 2023

Energies

View full text Add to dashboard Cite

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“…It makes it possible to construct a temperature dependence not from one single measurement location, but from all areas of the research object. Similar works were considered in [92][93][94][95][96][97][98][99][100][101][102][103][104][105][106] but were applied to other objects. Thus, the logicality of the chosen research path was confirmed.…”

Section: The State Of Knowledge Of the Problemmentioning

confidence: 99%

The Development of the Soderberg Electrolyzer Electromagnetic Field’s State Monitoring System

Martirosyan

Ilyushin

2023

Preprint

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This study is devoted to improving the economic efficiency of the cell, due to the field of the generated electromagnetic field’s accurate diagnostics. To solve this problem, the authors had developed a hardware-software complex for electromagnetic field diagnostics. This complex includes a measurement device and a software package for data collection and analysis. On the laboratory prototype of the aluminum electrolysis complex, a study was carried out on the formation and structure of the electromagnetic field. A number of experiments have been carried out showing the degree of formation of the electromagnetic field by the anode, the relationship of electromagnetic fields in the inter-anode space has been shown. Based on the results of the studies, conclusions were drawn about the possibility of diagnosing the current state of the anode, determining the direction of rotation of aluminum in the electrolytic cell and estimating the life of the anode and its burnout time.

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“…Currently, there is a tendency to expand the scale of machine building industries (1,2). This is primarily due to the need to provide oil and gas (3)(4)(5), energy (6,7), mining (8,9) and other industries with high-performance machinery and process equipment (10,11).…”

Section: Introductionmentioning

confidence: 99%

Peculiarities of Abrasive Finishing of Surfaces of Parts Made of Aluminium Alloy of АМts Grade in Magnetic Field

Keksin,

Sorokopud,

Zakirov

2024

IJE

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The scientific article presents the results of research to identify the regularities arising from the abrasive finishing of the surfaces of parts made of aluminium alloy grade (AMts) in a magnetic field. As a result of conducted experiments the relations between variable factors of abrasive finishing in a magnetic field and quality indicators of surfaces of parts from aluminium alloy of mark AMts which have been expressed by means of physical and statistical model of graphic dependences of functions defined as Ra = f(t, n) and Ra = f(B, S). It has been established that abrasive finishing in a magnetic field allows for an insignificant amount of time t = 4...12 min to reduce surface roughness from initial Ra = 1.3...1.9 μm to Ra = 0.23...0.85 μm (depending on processing conditions). In addition, the optimization problem of determining the optimal conditions of abrasive finishing in a magnetic field, providing the achievement of the minimum value of roughness Ramin = 0.23 μm of the surfaces of parts made of aluminium alloy grade AMts was solved.

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Development of a Numerical Method for Calculating a Gas Supply System during a Period of Change in Thermal Loads

Cited by 17 publications

References 52 publications

Using the Magnetic Anisotropy Method to Determine Hydrogenated Sections of a Steel Pipeline

Using the Magnetic Anisotropy Method to Determine Hydrogenated Sections of a Steel Pipeline

The Development of the Soderberg Electrolyzer Electromagnetic Field’s State Monitoring System

Peculiarities of Abrasive Finishing of Surfaces of Parts Made of Aluminium Alloy of АМts Grade in Magnetic Field

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