DE1601618A1 - Completed compressor arrangement - Google Patents

Description

Completed compressor arrangement

The invention relates to self-contained compressor assemblies and it is an object of the invention to provide an improved one To create a self-contained compressor arrangement in which a combustion gas turbine is used to drive a rotary compressor is used, and which always delivers the actual power under changing loads, according to According to the invention, the arrangement contains a gas generator - it consists essentially of a gas turbine which drives a combustion air / oil compressor which supplies air to the combustion chamber that drives the gas turbine becomes τ- a fuel supply system for this combustion chamber, which is driven by the gas generator and controlled according to its speed, and a second

Compressor,

Compressor delivering compressed air at the outlet, the second compressor being an independent one turbine is driven, which rotates independently of the gas generator, and in a similar way for their operation fuel gas supplied from the combustion chamber which is fed with air by the gas generator, remains with the compressor arrangement according to the invention the operation of the gas generator by changes αes Consumption of air by the second compressor is generated, unaffected, since any change in the speed of the second compressor by load changes acts only on the independent turbine and not on the gas generator, thus at all times an equally large power is available from the combustion chamber, in contrast to previously known Arrangements in which a single shaft is used and in which a lower speed of the The load on the compressor shaft influences the amount of combustion air available in the combustion chamber. Preferably both turbines are operated from the same combustion chamber, with the independent turbine preferably is arranged so that it works as the second stage of the gas generator turbine, increasing the number of Stages, which is necessary for each turbine, is halved.

Another advantage of the compressor arrangement according to

009882 / Q460

The invention compared to the turbine-driven compressor arrangements with a shaft is that each compressor can work under balanced speed-load conditions and that it is only necessary to start the arrangement to accelerate the gas generator, eier has a relatively small inertia, whereupon the independent lurbine is buoyed up by combustion gases, so that for this reason a quick start can be achieved with a small starting engine and a relatively low consumption of external energy. If an electric starting engine is used, the arrangement can be started with a battery of relatively small capacity With all these advantages, the invention is particularly suitable for supplying air to an air turbine which is used as an engine starter, in particular in jet aircraft.

Examples are given below using the Drawings described by way of example Here show *

Pii ,. 1 is an illustration of an air-powered engine starter assembly with a compressor arrangement of the invention, with ax Koapreasoranoi'dnung is shown in an axial section and

009882/0460 ORIGINAL BATHROOM

Pig · 2 through a somewhat schematic section • in · practical · form of a Kbmpr «ssorordnung ·

In the drawings let »in KLu * beug with sw ·! Engines disengaged, old each of which is connected to a «pneumatic start turbine · 2 * Each start turbine can, over • Connected in control valve 3 old to a Spelsestell · 4 be, and this food · He ksnn with compressed Air are fed from an arrangement cm ground, which is close to a line 5, which in turn connected to the food items 4 via a one-way valve 6 «

So that an independent start is possible ι if none external supply source is connected to line 5, the feed point 4 is quoh via a second one-way valve 7 with the spiral-shaped outlet housing θ a dynamic compressor 9, hereinafter referred to as the power compressor, which Sucks in air from an inlet 10 and whose rotor 11 is mounted on a shaft 12 which also carries the turbine wheel 13 of an independent turbine. A Second turbine wheel 14 with blades 22 is mounted on a second shaft 15 which is coaxial with the shaft aligned 1st, but rotated independently of this

will

009882/0460

BATH

can be, and this second shaft carries the rotor of a second compressor 17, with which it is a part a so-called gas generator formed this gas genera To rkompressor 17 sucks in air from a further inlet 18 and guides it via a radial distributor 17a and an axial distributor 17b under pressure in a combustion chamber 19, in which a. Burner 20 is located and from the combustion gases via inlet nozzles 21 to the blades 22 of the turbine wheel 14, which drives the gas generator compressor 17 After the combustion gases have passed from the chamber 19 through the blades 22, they will by a further arrangement of nozzles 23 the blades of the turbine wheel 13 are supplied to the independent turbine which drives the power compressor 9 and they are then fed to an exhaust 28 via a deflection duct 27. In a suitable casing on the inlet side of the gas generator compressor 17 are an electric Start motor 25 as well as a fuel pump and centrifugal regulator unit 26 arranged »

If one of the engines 1 is to be started with the aid of the compressor unit according to the invention, Electricity is supplied to the electric starter motor 25 so that the fuel supply 15 of the gas generator and daduräidie Fuel pump and centrifugal governor unit

triebejQ.

^; '009882/0460

BATH ORIGINAL

is driven. Since a gas generator has a small carrier possesses, the compressor 17 of the gas generator will soon deliver enough pressure that a combustion doa Fuel in the chamber 19 'which is introduced through the burner takes place and as soon as it does is, combustion gases from a chamber 19 are through the nozzles 21 and the turbine blades 22 of the gas generator turbine flow, whereby they drive the gas generator when controlled by the centrifugal governor unit take over. At the same time, the combustion gases, passing through the blades 24 of the wheel 13 of the independent turbine, the conduit coil drive, so that after a short time air at the Bpeiaestelie 4 is available via the one-way valve 7, which via one or the other of the engine start valves 3 of the starting turbine 2 of the selected engine 1 can be supplied / grounded. Because of the low Inertia of the gas generator, the starter motor 25 can be kept very small, and the total power consumption this motor is compared with a turbine and compressor unit with a shaft for a starting process reduced by the fact that the engine 25 can be switched off as soon as the gas generator has its required Has reached working speed without it being up the acceleration of the shaft 12 has to wait on which the ^ eiatungskomp'reaaor 9 is attached and which here driven by the turbine wheel 15 of the independent turbine *

G09882 / 0460

Claims (1)

(3 - 7 - Claims ι 1 · \ Completed compressor arrangement With a Vet— combustion pipeline · turbine that drives a rotary compressor »thus, the conduction turbine runs an independent · (turbine (13) let» which by combustion gases from a combustion chamber (19) is fed, which supplies the combustion gases auoh to a second turbine (14), which is independent in its rotation τοη of the power turbine (13), and which drives a gas generator compressor (16) in a manner known per se, which supplies combustion air to the combustion chamber (19) and which also drives a power 8 toilet "on clock and control unit (26) for the combustion chamber (19). 2 Closed compressor arrangement according to Claim 1, characterized in that the power unit (13) is arranged so that it is the second Stage of the gas generator turbine (14) is working BAD OfUGiNAL 009882 / (K60