scholarly journals The Use of Air Turbine Heat Recovery Units for the Mod-ernization of Gas Pumping Units with Gas Turbine Drive

2019 ◽  
pp. 47-58 ◽  
Author(s):  
E.A. Manushin ◽  
A.I. Melnikov
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Significant Proportion ◽  
Combustion Products ◽  
Air Turbine ◽  
Gas Pumping ◽  
Pumping Units ◽  
Regenerative Cycle

One of the urgent tasks of further developing natural gas transportation systems is the need to increase fuel efficiency and to improve environmental performance of the gas turbine units (GTU) that are used to drive superchargers of gas pumping units. Outdated GTUs with low efficiency are being replaced by units of a new generation, including those of the regenerative cycle. However, this requires significant capital expenditures, thus, the possibilities of upgrading the existing units are also being investigated. A significant proportion of the energy generated by the gas combusted in driven GTUs is lost in the form of heat of the exhaust combustion products. These gases have a temperature not lower than 670 K. To utilize the heat of the exhaust combustion products, it is proposed to compliment the main GTU by an air turbine heat recovery unit (ATU) that is simple in design and inexpensive in production. This well-known idea has not yet been realized in practice, thus there are no recommendations on the use of a GTU-ATU as a drive for natural gas superchargers. It is shown that to ensure the possibility of upgrading drive gas turbines at a minimum cost, it is advisable to use an ATU that is kinematically independent of the GTU. The ATU’s power is used to cover the own needs of the compressor station and other purposes. The calculations show that under equal conditions, the combined GTU-ATU is inferior in efficiency to the GTU of the regenerative cycle. However, it provides a much smoother flow of the efficiency parameter depending on the operation mode, which is important for gas pumping units. The potential of using the ATU for the modernization of drive GTUs is estimated. It is noted that in addition to generating additional power, the use of ATU’s can decrease the flue gas temperature and the mass concentration of harmful emissions.

The Selection of Parameters and Design of an Air Turbine Unit for Flue Gas Heat Recovery of a 16 MW Gas Turbine Unit for Gas Pumping Units

2020 ◽  
pp. 45-58
Author(s):  
E.A. Manushin ◽  
A.I. Melnikov
Keyword(s):  
Heat Exchanger ◽  
Gas Turbine ◽  
Heat Recovery ◽  
Turbine Unit ◽  
Fuel Efficiency ◽  
Flue Gases ◽  
Gas Turbine Unit ◽  
Air Turbine ◽  
Gas Pumping ◽  
Pumping Units

The introduction of combined turbine units is a promising method to increase fuel efficiency (pumped natural gas) and improve the environmental performance of the gas turbine units (GTU) that are used to drive superchargers of gas pumping units (GPU). Such an installation consists of the main GTU operating on natural gas and an additional air turbine unit (ATU). The latter utilizes the heat of the combustion products leaving the gas turbine unit in a heat exchanger, behind which cooled air is mixed with flue gases. The efficiency of heat recovery is determined by solving a complex technical and economic problem of selecting the optimal weight-and-size parameters of the heat exchanger. When retrofitting a gas pumping unit, it is advisable to use a GTU that is slightly different in design and parameters as the basic gas turbine unit. The ATU does not have an operating equivalent. Its parameters should ensure achieving the maximum fuel efficiency factor of the combined installation, with acceptable weight-and-size parameters of the ATU and the heat exchanger. As an example of developing the GTU-ATU type installations, an option of modernizing a GTU for a 16 MW GPU is proposed, which constitutes the basis of the Gazprom fleet. A combined GTU-ATU is designed to include the main 16 MW GTU and an additional 1 MW ATU to drive the electric generator. The fuel efficiency factor of the GTU-ATU installation reaches 39.3%. The design of the developed ATU is simple and reliable. Plate-ribbed surfaces PlR-2/PlR-2 are used to achieve the optimum mass-and-weight and hydraulic parameters of the heat exchange. A layout of the units of the combined installation is proposed, in which acceptable hydraulic resistance in the pipelines is provided. The feasibility study shows that the project is economically feasible. The environmental effect of modernization using an ATU is characterized by a significant decrease in the temperature of flue gases and concentration of harmful emissions by 1.3 times.

Principles of Imitation for the Loading of the Test Bench for Gas Turbines of Gas Pumping Units, Adequate to Real Conditions

2021 ◽  
Vol 13 (24) ◽  
pp. 13678
Author(s):  
Anton Petrochenkov ◽  
Aleksandr Romodin ◽  
Vladimir Kazantsev ◽  
Aleksey Sal’nikov ◽  
Sergey Bochkarev ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Power Plants ◽  
Simulation Models ◽  
Turbine Rotor ◽  
Operating Conditions ◽  
Automation System ◽  
Model Free ◽  
Gas Pumping ◽  
Pumping Units

The purpose of the study is to analyze the prospects for the development of loading methods for gas turbines as well as to develop a mathematical model that adequately describes the real operating conditions of the loading system at various loads and rotation speeds. A comparative analysis of the most common methods and technical means of loading the shafts of a free turbine at gas turbine plants intended for operation as part of gas pumping units is presented. Based on the results of the analysis, the expediency of using the loading model “Free Power Turbine Rotor–Hydraulic Brake” as a load simulation is shown. Recommendations for the creation of an automation system for the load testing of power plants have been developed. Mathematical models and Hardware-in-the-Loop simulation models of power plants have been developed and tested. One of the most important factors that predetermine the effectiveness of the loading principle is the possibility of software implementation of the loading means using software control systems that provide the specified loading parameters of the gas turbine.

scholarly journals SPE “Mashproekt” Gas Turbine Engines for Gas Pumping Sets

1996 ◽  
Author(s):  
Victor I. Romanov ◽  
Vladimir V. Lupandin ◽  
Anatoliy V. Kovalenko ◽  
Anatoliy I. Shelestyuk
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Turbine Engines ◽  
Gas Turbine Engines ◽  
Test Bed ◽  
Technical Data ◽  
Gas Pumping ◽  
Gas Pumping Unit ◽  
Pumping Units ◽  
Gas Loop

The paper describes the experience gained in designing, developing and operation of gas turbine engines for gas pumping units on the marine gas turbine engine’s base. More than 800 Mashproekt gas turbines of various power output have been in service in gas pumping application since 1980. This paper shows the SPE Mashproekt designing and developing approach for gas turbines to be installed in gas pumping units along with their full-scale testing in the test bed of close gas loop type equipped with gas compressor and gas coolers to simulate operation of the gas pumping unit in the real gas pipeline conditions. The gas turbines for gas pumping application on the 2.5 MW, 6 MW, 10 MW, 16 MW and 25 MW engines base were developed in the period of 1990–1995 for replacement of the existing old gas turbine line-up and installation in the new gas pumping units at the compressor stations in Russia and Ukraine. We are replacing engines with Mashproekt gas turbines at the following gas pumping units: Russian GTN-25, Ukrainian GPA-6.3, GPA-16 and “Coberra-182” (Great Britain) gas pumping units. The comparison of the technical characteristics of these replacements is given in the paper. Technical data on 2.5–25 MW Mashproekt gas turbines for gas pumping units is also presented in this paper.

MULTIFOCAL IGNITION OF COMBUSTION CHAMBER BY SUBCRITICAL STREAMER MICROWAVE DISCHARGE

2020 ◽  
Author(s):  
P. V. Bulat ◽  
◽  
M. P. Bulat ◽  
P. V. Denissenko ◽  
V. V. Upyrev ◽  
...  
Keyword(s):  
Combustion Chamber ◽  
Gas Turbines ◽  
Internal Combustion Engines ◽  
Microwave Discharge ◽  
Fuel Mixture ◽  
Combustion Products ◽  
Combustion Chambers ◽  
Entire Volume ◽  
Gas Pumping ◽  
Pumping Units

The challenges facing engine developers, aimed at improving the technical and operational characteristics, more stringent environmental standards, make the work aimed at increasing the efficiency of ignition, systems highly relevant. Technologies of prechamber, arc ignition, and ignition by corona discharge known to date require significant energy costs. In addition, ignition of a fuel mixture by such systems is local which leads to the limitation in the burning rate, incomplete combustion of fuel, and formation of harmful impurities in combustion products. Volumetric or multipoint ignition may significantly increase the effectiveness of the use of ignition systems. The use of a subcritical streamer microwave discharge, which is a network of thin hot channels propagating in the volume of the combustion chamber, seems promising because it provides virtually instantaneous ignition of the mixture in the entire volume. In this paper, the results of experiments using a subcritical streamer microwave discharge are presented. The possibility of volumetric ignition and a substantial increase in the completeness of fuel combustion is demonstrated. A number of indirect evidences indicate the absence of nitrogen oxides in combustion products. The results can be applied to the development of multivolumetric ignition systems in internal combustion engines, gas pumping units, power gas turbines, low-emission combustion chambers, etc.

scholarly journals INVESTIGATION OF VIBROACOUSTIC CHARACTERISTICS OF GAS-PUMPING UNITS OF GTK-10-4 TYPE

2016 ◽  
Vol 2016 (3) ◽  
pp. 108-114
Author(s):  
Алексей Дроконов ◽  
Aleksey Drokonov ◽  
Алексей Дроконов ◽  
Aleksey Drokonov
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Turbine Unit ◽  
Vibration Characteristics ◽  
Gas Turbine Unit ◽  
Noise And Vibration ◽  
Gas Pumping ◽  
Pumping Units

The investigation of vibroacoustic characteristic of gas-pumping units of GTK-10-4 type. Power units improvement, as a rule, results in the decrease of units steel intensity and under conditions of the increase of airgas flows and facilities developed it causes a growth of vibroacoustic activity of plants elements. Taking into account this factor, it is necessary to develop measures to reduce noise and vibrations in sources of their origin at the design elaboration both at the stage of design, and at the stage of reengineering. With this purpose there are carried out the investigations of noise and vibration characteristics of a gaspumping unit of GTK-10-4 type equipped with a sta-tionary gas-turbine unit with a capacity of 10 MWt and a natural gas supercharger of 520-12-1 type manufactured by NZL. The noise and vibration sources of impeller ma-chines are studied, their vibroacoustic characteristics are analyzed, and the methods to reduce vibroacoustic activity of gas-pumping units of such a type operating at compressor stations of trunk pipelines are offered.

Small Cogeneration in Industry: Requirements and Solutions With an Efficient Gas Turbine

1989 ◽  
Author(s):  
Erio Benvenuti ◽  
Sergio S. Stecco
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Design Guidelines ◽  
Exhaust Temperature ◽  
Paper Making ◽  
Industrial Sectors ◽  
Electricity Costs ◽  
The Impact ◽  
Regenerative Cycle

This paper examines some of the major problems connected with cogeneration in some typical industrial sectors. A prior study of the impact of monitorized energy consumption on the choice of cogeneration solution showed that: - In the 0.5–3.0 MW range: Gas turbines with heat recovery represent an appealing solution in terms of overall plant costs. - In the 0.5–0.8 MW range: Industry characteristics must be better clarified before dealing with competition from internal combustion (IC) reciprocating engines. This study served to establish the design guidelines for the NuovoPignone PGT2 gas turbine, rated at 2 MW, with a 25% efficiency at the generator terminals. The design exhaust temperature of 550°C is well suited to cogeneration applications in the types of industry investigated (textile-, cement-, and paper-making). However, in other cases such as nonindustrial cogeneration, where very low electricity costs are desirable, the available regenerative cycle option has a potential electrical efficiency of over 28% at lower exhaust temperatures and heat levels.

Tubular Regenerator Development and Incorporation Experience

2003 ◽  
Author(s):  
V. Vinogradov ◽  
A. Orberg ◽  
V. Soudarev ◽  
E. Shevchenko
Keyword(s):  
Natural Gas ◽  
Gas Turbines ◽  
Natural Gas Pipeline ◽  
High Durability ◽  
Design Service Life ◽  
Negative Effect ◽  
Enhance Efficiency ◽  
Gas Pumping ◽  
Pumping Units ◽  
Plate Type

A review of regenerative gas turbines operating at natural gas pipeline compressor stations across the Russia has been performed. Main performance characteristics, first of all, the power and efficiency of the recuperated gas turbines, many of those have been used up a design service life, can be recovered. Since a large negative effect on the performances is contributed by defective plate-type regenerators, their change seems to be essential when updating gas-pumping units. A tubular regenerator is developed and incorporated into the gas turbines for driving natural gas blowers. The regenerator being installed in place of the plate-type heat exchanger joints a rather simple fabrication process and high durability. Its design features are presented and discussed. Ways to enhance efficiency and decrease the weight of the regenerator are considered.

scholarly journals Environmental Update of Frame-3 Gas-Pumping Units

2000 ◽  
Author(s):  
A. Soudarev ◽  
E. Vinogradov ◽  
Yu. Zakharov ◽  
A. Leznov
Keyword(s):  
Natural Gas ◽  
Gas Turbine ◽  
Robust Design ◽  
General Electric ◽  
The World ◽  
Gas Pumping ◽  
Pumping Units

Due to its robust design, the General Electric Frame 3 MS3002 gas turbine is highly reliable and has reasonably good maintenance qualities, which explains why it is so widely used all over the world. At present, there are nearly 1000 units in this series, the bulk thereof are operated as gas-pumping units (GPU) to drive natural gas compressors.

THE FLOW CALCULATION OF END PRODUCTS OF FUEL COMBUSTION THROUGH THE AIR-GAS CHANNEL OF GAS TURBINE ENGINE

2017 ◽  
pp. 102-108
Author(s):  
S. I. Perevoshcikov
Keyword(s):  
Gas Turbine ◽  
Flow Rate ◽  
Combustion Products ◽  
Gas Turbine Engine ◽  
Turbine Engine ◽  
Gas Channel ◽  
Rate Of Combustion ◽  
End Products ◽  
Gas Pumping ◽  
Pumping Units

The article includes relations, allowing to calculate the flow rate of combustion products through the airgas channel of the gas turbine engine (GTE) gas pumping units (GPU). Usina of this dependence allows parametric diagnostics of GTE gas pumping units at a sufficient physical basis and with greater accuracy.

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