Equipment. Technologies. Materials

SYNTHESIS OF HEAT EXCHANGER NETWORKS CONSIDERING STEAM SUPPLY

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Published: Monday, 24 January 2022 08:49

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Volume 9 (1), January 2022, Pages 29-37

¹Lale Haciyeva, ²Natig Abbasov, ³Murad Rzayev

¹Dosent, department of “Industrial Machines”, Azerbaijan State Oil and Industry University, candidate of technical sciences, Azerbaijan. E-mail: lala.hacıThis email address is being protected from spambots. You need JavaScript enabled to view it.

 ²Assistant, department of “Industrial Machines”, Azerbaijan State Oil and Industry University, candidate of technical sciences, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ³Operator, “Azeristiliktadjizat” OJSC, graduate student, 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

In process industries, the heating gap in heat exchanger networks (HENs) is normally compensated by the steam generated from a utility system, thus these two mutually influencing systems should be designed as a whole through establishing structural interrelationships. In this work, an improved stage-wise superstructure of HENs is proposed to integrate with a Rankine cycle-based utility system. Inner- and inter-stage heaters are considered in the new structure. Furthermore, the selection of steam in different levels is also investigated, extending the possibilities of steam utilization in HENs and generation in utility systems. The presented methodology is able to realize the optimal design of HENs by considering the supply and utilization of steam. Heaters’ allocations, matches of streams, steam distribution and utilization are optimized accompanying with the trade-off amongst equipment investment, fuel consumption and power generation in objective, which is highly related to the final structure of the system. The optimization problem is formulated into a mixed-integer non-linear programming (MINLP) model and solved towards the lowest total annual cost (TAC) of the entire system. Finally, a case study with two scenarios is studied. The detailed results are given and analyzed to demonstrate the benefit from structural improvement.

Keywords: improved superstructure; HENs; utility system; steam heater; MINLP.

DOI: 10.36962/etm09012022229

THE ACTION OF STRESSES AND DYNAMIC LOADS ON RODS FROM FIBERGLASS, WHEN CATCHING THEM BY THE BODY, WITH A ROD CATCHER

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Published: Monday, 24 January 2022 08:03

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Volume 9 (1), January 2022, Pages 18-21

¹Adila Rahimova, ²Rustam Narimanov

¹Associate professor, department of “Materials science and processing technologies”, Azerbaijan State Oil and Industry University, phd in technical sciences, Azerbaijan. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 ² Training master, department of “Materials science and processing technologies”, Azerbaijan State Oil and Industry University, Azerbaijan.

ABSTRACT

The article discusses the process of gripping the working surface of the spiral, the parts of the rod catcher by the outer surface of the body of fiberglass rods. A diagram of this capture is shown. The diagram shows the forces acting on the gripping surface, between the fiberglass rods and the inner surface of the helix. The greater roughness of the outer surface of the fiberglass rods contributes to their more efficient grip. The drawbacks are indicated in the capture and release of fiberglass rods, which, when designing these rods, are taken into account in the preparation of technical specifications.

Keywords: fiberglass rods, deep pumps, tool, work piece.

DOI: 10.36962/etm0901202218

ANALYTICAL STUDY OF HYDRAULIC PRESSURE CAUSED BY LIQUID IN GATE VALVES

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Published: Monday, 24 January 2022 08:46

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Volume 9 (1), January 2022, Pages 22-28

¹Zenfira Huseynli, ²Abdullah Jamalov

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

 ² Project engineer, "ENERMUS" CJSC, graduate student, 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

There is an urgent need worldwide for efficient fluid control equipment. Some of the existing equipment has certain limitations for efficient fluid control under high pressure conditions. Thus, design modifications are required to solve this problem. This article presented a analytical method for designing and performing stress analysis for a high pressure valve used on a typical oil and gas wellhead with operating pressures up to 100 MPa. The most important components of a valve are the body and the valve (disc). The conversion design uses analytical method calculations to determine the stress and strain distribution in the critical components of a high pressure valve. Results from both analytical computational design and finite element analysis indicate reasonable agreement by measuring percent performance variance. Thus, the results of this research work confirm the reliability of the designed valves in accordance with engineering design estimates and, in turn, can be optimally improved in the manufacture of high pressure valves.

Keywords: gate valve, analytical method, validation, design and high pressure.

DOI: 10.36962/etm0901202222

RESEARCH STABILITY OF MAST ROPE-PIN DRIVE OF DOWNHOLE SUCKER-ROD PUMP

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Published: Monday, 24 January 2022 07:58

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Volume 9 (1), January 2022, Pages 10-17

¹Zuleykha Eyvazova, ²Gulbaniz Aliyeva

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

 ² Tutor, department of “Oil-Mechanics”, graduate student, 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

This scientific article is about the research stability of mast rope-pin drive of downhole sucker-rod pump. The design of downhole sucker-rod pump drive in the form of a mast, which is mounted directly on the column of the wellhead has been proposed. Calculations of the frequency of natural vibrations of the system from the rotation of the cranks during the breakage of the rods are performed, which completely eliminates the possibility of resonant phenomena that destroy the mast. This proves that the mast drive has a high stability margin.

Keywords: downhole sucker-rod pump drive, mast, long stroke drive.

DOI: 10.36962/etm0901202210