CN2092608U - Power devices with multi-energy output for gas turbine - Google Patents

Abstract

The utility model relates to a power device with multi-energy output to a gas turbine, belonging to a power device for developing, transporting and processing petroleum and natural gas, and comprising a core engine (9), a power turbine assembly (13) and a waste heat boiler (14). The utility model is characterized in that the rear part of the core engine is provided with a centrifugal chamber (15) for sealing by-pass air into an exhaust opening and leading the by-pass air to the outside of an engine. The power unit not only can provide normal mechanical energy and heat energy of atmospheric-pressure wet steam, but also can provide compressed air source. The utility model is used for driving a pneumatic machine or cooling. Thus, the purpose of the multi-energy output is achieved.

Description

Power devices with multi-energy output for gas turbine

A kind of multinomial energy output gas-turbine power plant, it belongs to mechanical and power equipment, and the power plant of can be used as the petroleum and natural gas exploitation, carrying and handle are particularly suitable for using away from the outlying oil-gas field development district of electrical network.

In exploitation, conveying and the processing procedure of rock gas and oil, all need the power source of a large amount of various ways.As the machine power that in oil, gas extraction and transmission, needs oil, rock gas are pressurizeed; Need heat to prevent wax deposition and to increase mobile thermal source oil; The source of compressed air that provides various pneumatic machineries or refrigeration to use.And mostly the method that adopts now is the form of second energy conversion, even drive various motor machines with electric power.As drive electronic transfer pump and come to the petroleum and natural gas supercharging, use electric air compressor pressurized air to be provided or to use other electronic refrigeration compressor, and use plain cylindrical furnace that thermal source is provided.Because natural petroleum gas field, to handle institute's energy requirement very big, and most oil-gas field development ground, dispatch station etc. are all away from big electrical network covering area, and this makes quite anxiety of these regional electric power, generally can only use each private station oneself to provide electric power.For adapting to the flowability of oil-gas field development, reduce investment, use turbine power plant light, easy installation to do power source more, output power provides energy for all devices.Owing to need the energy of various ways in petroleum and natural gas is handled, this will be through the transformation of energy of various ways.As be used for the mechanical energy that oil, natural gas transport carry out supercharging and just must pass through two conversions of mechanical energy--electric energy--mechanical energy.Pneumatic or brake required source of compressed air then need through outer contain in the air-flow can----such four conversion of electric energy--compressor mechanical energy--air internal energy, capacity usage ratio reduces the turbomachinery energy greatly.

The gas turbine that present turbine power plant is used, many is retrofited by aeroengine.Because aero-jet engine is to be power output with the jet thrust, ground is with the then demanding shaft power of turbine power plant, to drive generator.This just makes the two running state and parameter all very inequality, therefore can not directly utilize existing advanced aero-jet engine, just can obtain and must carry out great Transform Type design to it.Carrying out Transform Type design is that process lead time is long on the one hand, and the general remodeling cycle needs 5 to 10 years, and after remodeling was finished by the time, the former motor basic as remodeling lost Technical advancement; On the other hand, the investment of remodeling is also very big, makes the remodeling product cost increase, and the while can not be utilized existing now, also has the retired aero-engine of remaining life.

The purpose of this utility model is that invention is a kind of can provide pressurized air simultaneously, the gas-turbine power plant of the multiple energy output of mechanical torque and low pressure saturated vapor.It can use existing retired aviation turbofan engine to transform, and need not change the running state and the parameter of former motor.

Sectional structure schematic representation of the present utility model as shown in Figure 1.It has by fan and low pressure compressor (1), high-pressure compressor (2), firing chamber (3), high-pressure turbine (4), low-pressure turbine (5), high-pressure turbine shaft (7), the core-engine (9) that low-pressure turbine shaft (6) and casing (8) are formed, by power turbine (10), power turbine group (13) and exhaust heat boiler (14) that power turbine output shaft (11) and power turbine casing (12) are formed, it is characterized in that: have the outer air-flow of containing of sealing to enter relief opening and the outer air-flow of containing is drawn volute (15) outside the motor between outlet of the fan by-pass air duct of core-engine (9) and relief opening, volute can be the opening that has adpting flange that a ring packing that seals opening between by-pass air duct and the relief opening is blocked up and opened at the by-pass air duct afterbody.

Power generating part of the present utility model divides the same with present aviation turbofan engine, behind fan and low pressure compressor (1) pressurized air, air-flow is divided into outer the culvert and intension two-part, enter by-pass air duct and high-pressure compressor (2) respectively, the air after the high-pressure compressor compression burns in firing chamber (3) and produces high-temperature high-pressure fuel gas.High-temperature high-pressure fuel gas is located the acting of expanding at high-pressure turbine (4) and low-pressure turbine (5) respectively, drive fan and low pressure compressor (1) and high-pressure compressor (2) respectively by low-pressure turbine shaft (6) and high-pressure turbine shaft (7) and rotate, to keep normal operation.Also contain a large amount of interior energy by the combustion gas behind the low-pressure turbine (5), be used for by power turbine (10) acting of expanding, energy is absorbed by power turbine (10), is exported as a kind of form of energy by power turbine output shaft (11) after changing mechanical energy into.Combustion gas by behind the power turbine (10) also contains certain waste heat, by exhaust heat boiler (14) recovery waste heat, handles required low pressure steam in order to petroleum gas to be provided.By the pressurized air that duct is drawn, can be used for the machinery (as air pump, various pneumatic valves etc.) of use compressed air-driven such as oil field, also can use compressed air refrigeration, be used for the liquefaction of lighter hydrocarbons recovery and rock gas.The pressurized air of output can obtain about 70 ℃ temperature difference after adiabatic expansion.

In the utility model, engine section directly adopts the design of existing advanced aviation turbofan engine, even directly utilize ready-made aviation turbofan engine (comprising retired or the storage spare part) entity, only need between by-pass air duct tail end and relief opening, to add a volute (15), making the outer air-flow of containing is not to enter relief opening and combustion gas mixing, and motor is outer to be exported as a kind of power but drawn.Be connected to a normalized power turbine group (13) and exhaust heat boiler (14) at relief opening, make and to convert mechanical energy and heat energy output in the output combustion gas to.Accomplish the multiple energy output on a prime mover like this, satisfied needed various power form in natural petroleum gas field, conveying and the processing.Owing to be to have adopted existing aviation turbofan engine to do core-engine, can utilize the design parameter of former turbofan engine, need not the running state and the parameter of starting be made any change.Accompanying drawing 2 has provided each position flow process Parameter Map of a kind of former aviation turbofan engine.Accompanying drawing 3 has provided multiple energy output Gas Turbine Power station each the position flow process Parameter Map of core-engine by this machine repacking.Can find out that from two figure core-engine is still the optimum Working that operates in former motor, thereby can obtain the highest operational efficiency, also exempt the cycle that Transform Type design is made.This not only can reduce expenses, and can utilize state-of-the-art technology, obtains the best power source unit.

Power turbine group (13) in the utility model and exhaust heat boiler (14) are a kind of standardized designs members.Existing special coordinates provides on the market, uses for various gas turbine repackings.In the utility model, only need select for use to get final product, generally can be without self design.And be very simple for the repacking of using aviation turbofan engine to do core-engine (9), need only remove the outer fastener rings of containing with exhaust ports of former motor, be changed to one and block the outer air-flow of containing and enter relief opening and the outer air-flow of containing is drawn the volute (15) of motor and got final product.The operation control mechanism of former motor.Motion control software comprises that operational parameter control all need not change.

The core-engine of the utility model repacking usefulness can be to adopt this shellfish 512(SOEY512 of Britain sieve sieve (ROLLS-ROYCE) company) the type turbofan engine.After the repacking, it is 0.26MPa that pressure is arranged, and flow is the compressed air energy output of 39kg/sec.Simultaneously, the air horsepower of power turbine output 5500KW, and exhaust heat boiler 27 tons pressure per hour also can be provided is the low pressure saturated vapor of 0.8MPa.

Claims (1)

1, a kind of multinomial energy output gas-turbine power plant, it has by fan and low pressure compressor (1), high-pressure compressor (2), firing chamber (3), high-pressure turbine (4), low-pressure turbine (5), high-pressure turbine shaft (7), the core-engine (9) that low-pressure turbine shaft (6) and casing (8) are formed, by power turbine (10), power turbine group (13) and exhaust heat boiler (14) that power turbine output shaft (11) and power turbine casing (12) are formed, it is characterized in that: have the outer air-flow of containing of sealing to enter relief opening and the outer air-flow of containing is drawn volute (15) outside the motor between outlet of the fan by-pass air duct of core-engine (9) and relief opening, volute can be the opening that has adpting flange that a ring packing that seals opening between by-pass air duct and the relief opening is blocked up and opened at the by-pass air duct afterbody.

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