Gas turbine drive

FIELD: engines and pumps.

SUBSTANCE: gas turbine drive comprises inlet device, radial-flow compressor, combustion chamber, turbine, outlet device and reduction gear. Intermediate housing accommodating torque transmission is arranged between reduction gear and inlet device to make common oil chamber there between. Intermediate housing incorporates extra flange with through hole to allow connection with mate flange of extra ganging module housing. Extra ganging module comprises drive gear to engage with, at least, two gear wheels, one being engaged with gear connected with starter. Another wheel of said extra module allows transmitting torque to extra driven assemblies. Said extra module is connected with torque transmission via spring and does not depend upon reduction gearbox gear ratio. Said spring passes through opening in intermediate housing wall to be connected with extra module drive gear and torque transmission bevel gear. Said bevel gear is fitted on torque transmission assembly with its central axis aligned with gas turbine drive rotational axis. Intermediate shaft is engaged with drive shaft and reduction gear drive wheel to transmit torque from gas turbine.

EFFECT: higher performances and reliability, longer life.

2 cl, 4 dwg

 

The invention relates to mechanical engineering and can be used as gas turbine drive external loads, in particular generators as part of stationary or block-container plants or gas-pumping aggregates, or aggregates of the transport destination.

Known gas turbine drive external loads - pump containing a gas turbine engine and coupled with it the transitional shaft of the gearbox, which is located before the inlet of the engine, and part of the front end wall of the input device is placed on the gearbox, and the rear end wall of the input device is located on the gas turbine engine (see RF patent №2386834, IPC 9 F02C 7/32 stranded, F02C 7/00, F02C 6/00, F02D 13/00, publ. 20.04.2010,). However, the known gas turbine driven pumping unit includes a gas turbine engine with a multi-stage axial compressor, which increases the cost of the drive, its physical characteristics and cost of operation, and applicable design input device with the pass-through shaft connecting the engine with the gearbox, has forced telescopic connections to ensure a tight seal and thereby determines the complexity of the design of the drive and reduce its reliability.

Closest to the proposed is in its technical essence is a gas turbine drive external loads - screw the helicopter containing the input device, a centrifugal compressor, a combustor, a turbine, the output device and the gear housing which is connected by means of flange connection to the housing of the input device of gas turbine actuator (see Zrelov, VA "National gas turbine engines, main parameters and structural scheme of the" Moscow, Mashinostroenie, 2005, p.148, TLD TV 0-100). However, the known gas turbine actuator is not provided with an additional plug-in units that can be used as a drive for a starter (in cases where the generator cannot operate in starter mode), or drive additional units that can be claimed in operation (oil, fuel pumps and other), which reduces its functionality and overall performance when using it, for example, consisting of stationary, mobile and modular power plants. In addition, the kinematic diagram of the gear motor TV-0-100 is not multi-threaded gear, and therefore not able to evenly distribute all threads TDP gearing, strength in the teeth, joints and bearings, and thereby to provide the desired, especially for power plants and gas compressor units, d is loveknot gear in General using standard serial bearings in the supports and cooling them using the oils of General application.

Object of the invention is the improvement of the functional and operational characteristics of gas turbine actuator, ensure that the required time between overhauls, increase reliability and reduce the costs as a whole.

This technical result is achieved in that the gas turbine actuator includes an input device, a centrifugal compressor, a combustor, a turbine, an output device, gearing between the gear and the input device using flanged connections set intermediate casing with a node in the transmission of torque inside and education among the General oil cavity, while the intermediate casing is further provided with a flange with a through hole in the wall with the possibility of permanent connection with the flange of the body additional plug-in units, additional plug-in units includes a pinion gear that is engaged, at least two wheels attached on bearings in the housing, one wheel of which is engaged with the gear, a spring which is connected to the starter, the other wheel is arranged to transmit torque of the additional drive units, additional plug-in units is connected to the node transmission of torque through the spring and not awesim from the gear ratio of the gearbox, this spring passes through a through hole in the wall of the intermediate casing and is connected at one end with a pinion additional module, and the other bevel wheel transmission nodes torque which engages with a bevel gear fixed to the intermediate shaft site of torque transmission, the Central axis of which coincides with the axis of rotation of the gas turbine actuator, one end of the intermediate shaft through a first spring connected with the shaft of the gas turbine actuator, and the other by a second spring connected to the pinion gear with the ability to transfer torque from the gas turbine drive.

The gearbox is made, at least on a three-threaded kinematic scheme, each gear and each wheel is mounted on bearings in the housing, the leading gear is engaged with the two wheels of the first stage, each wheel of the first stage of the spring is connected with a corresponding gear of the second stage, each gear of the second stage is engaged with the two wheels of the second stage, each wheel of the second stage from the left and right of their corresponding sides is connected by springs with gears of the third step, which pairs are in engagement with the left and the right number is themselves third stage, mounted on the output shaft.

The invention is illustrated by drawings.

Figure 1 presents a schematic diagram of a gas turbine drive gear, an intermediate housing and a host of torque transmission and more plug-in units.

Figure 2 presents the item And figure 1 (node transmission of torque).

Figure 3 presents a view of a gas turbine drive gearbox side.

4 shows the kinematic diagram of the gearbox.

Schematic diagram of gas turbine actuator includes an input device, such as a snail type 1, a centrifugal compressor 2, a combustor 3, a turbine 4, the output device 5, a three-stage multi-threaded reducer 6. Between the gearbox and the input device using a detachable flanged connections 7 and 8 are placed intermediate casing 9 node 10 torque transmission. The intermediate casing has a flange 11 with a through hole 12 in the housing wall with the possibility of permanent connection with the flange 13 of the housing 14 additional plug-in units 15. Additional module 15 includes a pinion gear 16, at least two gears 17 and 18, the gear 19 connected with the starter motor 20 (not shown), the gear 21, designated 22, 23 connecting the various drive units (aggregates and therefore is not shown) and a flat spring 24. The node transmitting torque includes a conical wheel 25, the bevel gear 26, the intermediate shaft 27, the spring 28, connected with the intermediate shaft and the shaft 29 of the gas turbine actuator, and a spring 30 connected intermediate shaft and pinion gear 31.

The kinematic scheme of the first stage of the gearbox consists of a pinion 31, the wheels 32 and 33, the second stage includes two gears 34 and 35, each of which is in engagement with the wheels 36, 37 and 38, 39 respectively. The first and second gear are connected by springs 40 and 41. The wheels of the second stage from the left and right parts of the springs 42, 43, 44, 45 and 46, 47, 48, 49 are connected respectively with the gears 50, 51, 52, 53 and 54, 55, 56, 57 third stage. Gear third stage pairs are in engagement with the left and right wheels 58 and 59 mounted on the output shaft 60 of the gear.

In addition, the schematic circuit diagram shown: output radial diffuser - 61, inlet and outlet 62 and 63 of the oil for cooling the rear legs 64 and supply of oil 65 on the cooling front support 66 gas turbine drive and host transmission of torque, and bearings 67 with bearings in the gear housing 6. Oil cavity 68 is formed between the front support 66, the node 10 of the transmission of torque, gear 6 and the additional module 15 connected units.

Gas turbine drive R who works as follows.

After starting the gas turbine drive air input device 1 enters the centrifugal compressor 2 and, after increasing the pressure therein, the output radial diffuser 61 in the annular combustion chamber 3, which is supplied fuel and the combustion process in a mixture with air. The products of combustion from the combustion chamber 3 are received in the gas turbine 4, which carries the drive of the centrifugal compressor 2, the shaft 29 of the gas turbine actuator and connected to it by a spring 28 to node 10 torque transmission. A spring 28 connected to the intermediate shaft 27, passes torque from the gas turbine drive. The intermediate shaft 27 simultaneously transmits torque through the spring 30 pinion 31 of the first gear 6 and a fixed bevel gear 26 which is in mesh with a bevel wheel 25 mounted on poles in the intermediate casing 9. Bevel wheel 25 in engagement with the slotted spring 24 and the engagement of its other end with a pinion 16 additional module 15 provides the transmission of torque pinion 16 regardless of the gear ratio of the gearbox. In turn leading gear 16 is engaged, at least two wheels 17 and 18, mounted on bearings in the housing 14 additionally the th module 15. The wheel 17 is in mesh with the gear 19, the spring which, for example, can be connected to the starter 20 to launch a gas turbine drive in those cases where the generator cannot operate in starter mode, and the wheel 18 is arranged to transfer torque from the creation of the seats 22 and 23 connecting the various drive units, such as oil and fuel pumps (not shown)necessary for the needs of gas turbine drive.

Each gear and each wheel gear 6 mounted on bearings 67 in his case. Leading gear 31 transmits the rotation of the two wheels 32 and 33 of the first stage, while dividing the transmitted power into two equal flow ratio of ilevel 1. Springs 40 and 41 connect the wheels 32 and 33 of the first stage with gears respectively 34 and 35 of the second gear 6, transmit the rotation, which in turn transmits rotation being with them in engagement with the wheels 36, 37 and 38, 39 respectively, while dividing the transmitted power into four equal flow with the gear ratio i2 stages. Wheels 36, 37 and 38, 39 of the second step with the left and right from its sides connected by springs 42, 43, 44, 45 and 46, 47, 48, 49, respectively, the gears 50, 51, 52, 53 and 54, 55, 56, 57 of the third step, which pairs are hook the attachment with the corresponding wheels 58 and 59, fixed to the output shaft 60 of the gear 6, while dividing the transmitted power into eight equal flows with a ratio of istage 3and the desired gear ratio of the gear igear=ilevel 1·i2 stages·istage 3., thereby providing the desired rotational speed, in particular a generator (not shown) in the stationary or block-container plants or gas-pumping aggregates, or aggregates of the transport destination.

The introduction of the intermediate body placed in it a host of torque transfer allows you to simultaneously transmit torque from the turbine drive gear and the additional plug-in units with the required speed.

Introduction flange detachable connections between the buildings of the gearbox, the input device and the additional module allows you to:

- make changes as gearbox with one gear ratio to another, and to replace additional module with one set of units to another, without affecting their work separately;

to provide an opportunity for the customer to dismantle or install an additional plug-in units directly in operation without the demon who ven and disassembly of the gearbox and turbine drive without disturbing the transmission of torque from the turbine drive of the output shaft of the gearbox;

- to form a single oil cavity between the front pillar of gas turbine actuator, the node transmission of torque, gear and more plug-in units and thereby to simplify the design of the oil system of a gas turbine drive by reducing the number of units of the oil system.

The presence of the input device, for example, snail type, which are not directly driven shaft and spring, lets not be applied to ensure the integrity of various types of telescopic connection, which simplifies the design and thereby improves the reliability of the drive.

The introduction, at least three-stage multi-threaded reducer makes it possible to provide uniform distribution on all threads of the reducer rated capacity on the gears, forces in the gear connections and bearing which engages pairs of gear wheels and pinions, allows to provide the required strength of the springs, gear teeth and the durability of the bearing gearbox for a given resource using the bearing supports standard production and use for their cooling oils of General application and, thereby, elusituatsioonis performance gas turbine drive.

The compact dimensions of the gas turbine actuator, its structural simplicity, high reliability, versatility, availability, and ability to use standard tools like visual and instrumental monitoring allows us to predict him good commercial prospects for its use in various sectors of the economy both within our country and abroad.

Thus, implementation of the proposed technical solutions allows you to create a highly versatile cheap gas-turbine drive external loads using the developed materials, technologies, constructive achievements, with good commercial perspective, with a high degree of operational reliability for a given resource for use in various industries, including fixed-site, mobile and modular power plants or gas-pumping aggregates, or aggregates of the transport destination.

1. Gas turbine drive containing the input device, a centrifugal compressor, a combustor, a turbine, an output device, gearing between the gear and the input device using flanged connections set intermediate casing with a node in the transmission of torque within and clicks the cation between the total oil cavity, when the intermediate casing is further provided with a flange with a through hole in the wall with the possibility of permanent connection with the flange of the body additional plug-in units, additional plug-in units includes a pinion gear that is engaged, at least two wheels mounted on bearings in the housing, one wheel of which is engaged with the gear, a spring which is connected to the starter, the other wheel is arranged to transmit torque of the additional drive units, additional plug-in units is connected to the node transmission of torque through the spring and independent of the gear ratio of the gearbox, this spring passes through a through hole in the wall of the intermediate casing and is connected at one end with a pinion additional module, and the other bevel wheel transmission nodes torque which engages with a bevel gear fixed to the intermediate shaft site of torque transmission, the Central axis of which coincides with the axis of rotation of the gas turbine actuator, one end of the intermediate shaft through a first spring connected with the shaft of the gas turbine actuator, and the other through the second restoration with the pinion gear with the ability to transfer torque from the gas turbine drive.

2. Gas turbine drive according to claim 1, characterized in that the gearbox is made, at least on a three-threaded kinematic scheme, each gear and each wheel is mounted on bearings in the housing, the leading gear is engaged with the two wheels of the first stage, each wheel of the first stage of the spring is connected with a corresponding gear of the second stage, each gear of the second stage is engaged with the two wheels of the second stage, each wheel of the second stage from the left and right of their corresponding sides is connected by springs with gears of the third step, which pairs are in engagement with the left and right the wheels of the third step, is fixed to the output shaft of the gearbox.



 

Same patents:

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