Gas-turbine plants characterised by the working fluid being generated by intermittent combustion
5
/
02
•
characterised by the arrangement of the combustion chamber in the plant (combustion chambers per seF 23 R) [3]
5
/
04
•
•
the combustion chambers being formed at least partly in the turbine rotor
5
/
06
•
the working fluid being generated in an internal-combustion gas generator of the positive-displacement type having essentially no mechanical power output (internal-combustion engines with prolonged expansion using exhaust gas turbines F 02 B)
5
/
08
•
•
the gas generator being of the free-piston type
5
/
10
•
the working fluid forming a resonating or oscillating gas column, i.e. the combustion chambers having no positively actuated valves, e.g. using Helmholtz effect [3]
5
/
11
•
•
using valveless combustion chambers [3]
5
/
12
•
the combustion chambers having inlet or outlet valves, e.g. Holzwarth gas-turbine plants
6
/
00
Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus (aspects predominantly concerning such apparatus, see the relevant classes for the apparatus); Adaptations of gas-turbine plants for special use [3]
6
/
02
•
Plural gas-turbine plants having a common power output [3]
6
/
04
•
Gas-turbine plants providing heated or pressurised working fluid for other apparatus, e.g. without mechanical power output (F 02 C 6/18 takes precedence) [3]
6
/
06
•
•
providing compressed gas (F 02 C 6/10 takes precedence) [3]
6
/
08
•
•
•
the gas being bled from the gas-turbine compressor [3]
6
/
10
•
•
supplying working fluid to a user, e.g. a chemical process, which returns working fluid to a turbine of the plant [3]
6
/
12
•
•
•
Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure [3]
6
/
14
•
Gas-turbine plants having means for storing energy, e.g. for meeting peak loads [3]
6
/
16
•
•
for storing compressed air [3]
6
/
18
•
using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants (using waste heat as source of energy for refrigeration plants F 25 B 27/02) [3]
6
/
20
•
Adaptations of gas-turbine plants for driving vehicles [3]
7
/
00
Features, component parts, details or accessories, not provided for in, or of interest apart from, groups F 02 C 1/00 to F 02 C 6/00; Air intakes for jet-propulsion plants (controlling F 02 C 9/00) [3]
7
/
04
•
Air intakes for gas-turbine plants or jet-propulsion plants [3]
7
/
042
•
•
having variable geometry [3]
7
/
045
•
•
having provisions for noise suppression [3]
7
/
047
•
•
Heating to prevent icing [3]
7
/
05
•
•
having provisions for obviating the penetration of damaging objects or particles [3]
7
/
052
•
•
•
with dust-separation devices [3]
7
/
055
•
•
•
with intake grids, screens or guards [3]
7
/
057
•
•
Control or regulation (conjointly with fuel supply control F 02 C 9/50, with nozzle area control F 02 K 1/16) [3]
7
/
06
•
Arrangement of bearings (bearings F 16 C); Lubricating (of engines in general F 01 M) [3]
7
/
08
•
Heating air supply before combustion, e.g. by exhaust gases
7
/
10
•
•
by means of regenerative heat-exchangers
7
/
105
•
•
•
of the rotary type (rotary heat exchangers per seF 28 D) [3]
7
/
12
•
Cooling of plants (of component parts, see the relevant subclasses, e.g. F 01 D; cooling of engines in general
F 01 P)
7
/
14
•
•
of fluids in the plant
7
/
141
•
•
•
of working fluid (F 02 C 3/30 takes precedence) [3]
7
/
143
•
•
•
•
before or between the compressor stages [3]
7
/
16
•
•
characterised by cooling medium
7
/
18
•
•
•
the medium being gaseous, e.g. air
7
/
20
•
Mounting or supporting of plant; Accommodating heat expansion or creep
7
/
22
•
Fuel supply systems
7
/
224
•
•
Heating fuel before feeding to the burner [3]
7
/
228
•
•
Dividing fuel between various burners [3]
7
/
232
•
•
Fuel valves; Draining valves or systems (valves in general F 16 K) [3]
7
/
236
•
•
Fuel delivery systems comprising two or more pumps [3]
7
/
24
•
Heat or noise insulation (air intakes having provisions for noise suppression F 02 C 7/045; turbine exhaust heads, chambers, or the like F 01 D 25/30; silencing nozzles of jet-propulsion plants F 02 K 1/00) [3]
7
/
25
•
•
Fire protection or prevention (in general A 62) [3]
Power transmission between the different shafts of the gas-turbine plant, or between the gas-turbine plant and the power user (F 02 C 7/32 takes precedence; couplings for transmitting rotation F 16 D; gearing in general F 16 H) [3]
