Equipment. Technologies. Materials

INCREASING THE EFFICIENCY OF SCREW COMPRESSORS USED IN INDUSTRY

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Published: Monday, 08 May 2023 15:45

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Volume 14.1 (2-1), May 2023, Pages 47-52

Vahid Hajiyev¹, Ayaz Teimurov²

¹Head of "Neftgazmash" OJSC Vahid Hajiyev, Doctor of technical sciences, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

²Magistr, "Industrial machinery" Department, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ABSTRACT

 Increasing energy efficiency is the most important energy source today. Therefore, the main success criterion of product development studies is seen as efficiency. Compressors; It is widely used in many different sectors, especially petro-chemical, electronics, automotive, food, machinery, glass, machining, textile, construction. In our daily life, compressors are among the indispensable main components in refrigerators we use at home and in transportation (bus, train, truck). To put it in a nutshell, while people need air to live, the operation of industry depends on compressed air. Compressed air requirement is provided by compressors without alternatives. According to research, approximately 10% of industrial energy consumption in Europe and Australia is used for compressed air production. However, the energy consumed for the production of compressed air in some sectors in the USA reaches up to 30% of the total energy consumed. These studies have shown that the compressors used for the production of compressed air in the industry are the main machines that cause energy consumption. Therefore, energy efficiency in compressors is one of the main criteria for the industry.

When the screw compressor development studies are examined in the literature, the main working area is to increase the efficiency of the compressor and reduce the operating costs. This study covers the parametric optimization of the components that affect the performance of an oil type screw compressor with a one-dimensional thermodynamic model, using RSO (Response Surface Optimization Technique) and Taguchi optimization techniques, which are widely preferred in the literature. Stosic et al. investigated the performance of the rotor profile tooth depth on the compressor in their study. The outer diameter of the female rotor and the distance between the rotors, which affect the rotor tooth depth, were also investigated parametrically.

Keywords: compressor, screw compressor, HAD, RSO, Taguchi, rotor, modernization, energy efficiency, technologies

STUDY OF THE CAUSE OF FAILURE OF MAIN ELEMENTS OF THE GATE VALVE AND EFFECTIVE SOLUTION WAYS

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Published: Monday, 08 May 2023 15:39

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Volume 14.1 (2-1), May 2023, Pages 32-40

Zenfira Huseynli¹, Calal Babazade², Gulnar Hamidova³, Niyaz Zeynalov⁴

¹Associate professor, department of “Industrial Machines”, Azerbaijan State Oil and Industry University, phd in technical sciences, Azerbaijan. Email id: This email address is being protected from spambots. You need JavaScript enabled to view it.

²Master, Azerbaijan State Oil and Industry University, Mechanical Engineer, Wellmechs Electromechanical Company. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

³Head of the laboratory, department of “Industrial Machines”, Azerbaijan State Oil and Industry University, phd in technical sciences, "Technology and technology for oil production, oil and gas transportation" laboratory junior researcher, Azerbaijan. Email id: This email address is being protected from spambots. You need JavaScript enabled to view it.

⁴Teacher, “Industrial machines” department, Azerbaijan State Oil and Industry University, dissertant, Azerbaijan.  E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

ABSTRACT

 All over the world, there is an urgent need for effective fluid control equipment, such needs can be found in foods, drugs, beverages, power generation, and oil and gas industries. Some of the existing equipment for this purpose has certain limitations for effective control of fluid at high pressure condition. Thus, there is a need for design modification to solve the prevailing problem. This paper majorly addressed the case peculiar to the oil and gas industries, where fluid control failure has cost millions of dollars, hazardous environmental effect and also decline in nation’s economy, taking Niger Delta oil spillage as a case study. In this work, computer aided design method (CADM) was utilized to design and perform stress analysis of a high pressure gate valve used on a typical oil and gas wellhead of working pressure up to 15,000 psi. (103.4 MPa). The critical components in the gate valve are the body and gate (disc). Conversional design adopts calculations from analytical method, but in this work, finite element analysis (FEA) was used to determine stresses and deformations distribution on critical components of the high pressure gate valve (HPGV) as they are the main pressure retaining boundaries in the valve. The results obtained from the two methods indicated reasonable convergence after validation. The stress analysis conducted was based on von mises failure criterion which is most suitable for ductile materials. The results obtained from both analytical design calculation and that of finite element analysis indicates reasonable agreements by measuring their percentage performance variance. Therefore, the findings of this research work attests to reliability of the designed HPGV valves in meeting engineering design assessments, and in turn can be optimally advanced in the manufacture of high pressure gate valves.

Key words: Gate valve, analytical method, validation, design and high pressure.

RESEARCH ON PİSTON COMPRESSORS

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Published: Monday, 08 May 2023 15:42

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Volume 14.1 (2-1), May 2023, Pages 41-46

Vahid Hajiyev¹, Sabuhi Baratov²

¹Head of "Neftgazmash" OJSC Vahid Hajiyev, Doctor of technical sciences, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

²Magistr, "Industrial machinery" Department, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ABSTRACT

 Piston compressors are widely used in various industries and applications for gas compression. As a result, there has been a considerable amount of research conducted on these compressors to improve their efficiency, reliability, and durability.

One area of research has focused on improving the design and operation of piston compressors to increase their efficiency. Researchers have investigated different piston configurations, valve designs, and lubrication methods to minimize energy losses during compression. They have also explored the use of advanced control systems to optimize the performance of these compressors.

Another area of research has focused on improving the reliability and durability of piston compressors. Researchers have studied the impact of operating conditions, such as temperature and pressure, on the lifespan of compressor components. They have also investigated the use of new materials and manufacturing techniques to improve the wear resistance and mechanical properties of these components.

Noise reduction and vibration control have also been the subject of research on piston compressors. Researchers have explored the use of advanced acoustic materials and control systems to minimize noise emissions. They have also investigated ways to reduce vibrations in the compressor to improve its reliability and lifespan.

In recent years, there has been a growing interest in developing more sustainable piston compressors. Researchers have explored the use of alternative fuels, such as hydrogen, and the integration of piston compressors with renewable energy sources, such as wind and solar power. They have also studied the environmental impact of these compressors and developed methods to reduce their carbon footprint.

Overall, research on piston compressors has focused on improving their efficiency, reliability, durability, and sustainability. The development of new materials, manufacturing techniques, and control systems has enabled significant advancements in this field, leading to the development of more efficient and sustainable compressors.

Keywords: compressor, piston compressor, HAD, RSO, Taguchi, rotor, modernization, energy efficiency, technologies

METHODS OF INCREASING THE PRODUCTIVITY OF RECIPROCATING COMPRESSORS

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Published: Monday, 08 May 2023 15:35

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Volume 14.1 (2-1), May 2023, Pages 24-31

Vahid Hajiyev¹, Huseyn Shukurov²

¹Head of "Neftgazmash" OJSC Vahid Hajiyev, Doctor of technical sciences, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

²Magistr, "Industrial machinery" Department, Azerbaijan State Oil and Industry University, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

  ABSTRACT

 The purpose of the work: to improve the labyrinth compressors to increase the productivity, increase the resistance to corrosion, thereby increasing the stability index of the compressor compressor node, and reducing the compressor interstage pressure to atmospheric pressure, in order to reduce the pressure acting on the compressor. Object of the work: Improvement of piston compressor connectors.

For this, let's examine the use of different types of compressors in a piston compressor:

One of the most common problems in production is the problem of malfunctioning of piston compressors. This affects the productivity of the compressor. In order to increase the productivity of piston compressors, different types of compressors are used: rubber compressors, cuff, graphite, face compressors.

To overcome this problem, it is appropriate to use a new type of labyrinth connectors. Thus, unlike ordinary graphite capacitors, labyrinth capacitors are distinguished by their long-term use, easier installation and, most importantly, more stability. Simple graphite-type coils cause some problems during installation. The main one is the problem of creating a complete mold. Labyrinth coils are easier to install than these coils and the mold is fully ensured. If there is any release during the process, as a result of the pressure difference between the labyrinths, the pressure of the product coming out of the last labyrinth is equal to atm pressure.

Taking into account the above, we see that the use of labyrinth clamps is suitable for increasing productivity during the operation of compressors, for eliminating out-of-order discharges and for solving the problems of fully ensuring the running time of the compressor.

Keywords: piston compressors, labyrinth sealers, graphite, rubber, cuff, surface sealers, productivity, seal knot.