Stal-laval Turbin Ab

Abb Stal Ab

Ragnar Torstenfelt

Martin Mansson

Martin Mangnsson

Lars Andersson

Johnny Rehn

Stig Ferm

Karl-Johan Nordstrom

A gas turbine with at least one fixed guide vane ring (1) with a sealing ring (3) cooperating with a sealing member on the turbine rotor (7). The sealing ring (3) is connected to the guide vane ring (1) through a number of links (19) which are suitably oriented in a substantially tangential direction. The attachment of the sealing ring (3) by means of the links (19) means a perfect centering of the sealing ring (3) relative to the rotor (7) when the guide vane ring (1) expands relative to the sealing ring (3).

Gas turbine with link attachment of a sealing ring in a guide vane ring

A power plant for burning a fuel at a pressure exceeding atmospheric pressure, in particular a PFBC power plant with a bed vessel enclosed in a pressure vessel, includes a plurality of valves in a hot gas pipe between the bed vessel and a turbine, and an air duct between a compressor and the bed vessel, and in a short-circuit connection between the ducts which are constructed as a single valve unit located in a valve housing. Arranged centrally in the valve housing is a cylinder providing passage for gas to the turbine and an annular channel is formed between the valve housing and the cylinder for compressed air from the compressor. At least one valve is provided in the cylinder and the channel includes a plurality of valves arranged in parallel. Between the annular channel and the cylinder a short circuit connection is provided having a plurality of valves. The valves in the air duct and the valves in the short circuit connection have valve discs arranged on a common spindle. The valve in the air duct can function as a non-return valve should the operating device of one of the valves fail to operate.

Power plant for burning a fuel at high pressure and a gas turbine driven

A gas turbine plant having an ignition combustion chamber for applying heated gas to heat the fluidized bed material to ignition temperature. In starting up the plant, a starter motor is employed to rotate a turbine and thereby to cause a compressor to produce compressed air. Liquid or gaseous fuel is applied to the ignition combustion chamber and is ignited within the chamber to heat compressed air from the compressor. The compressed air is passed through the fluidized bed combustor to heat the bed material up to ignition temperature. During the start-up operation, bed material in the fluidized bed combustor is reduced to reduce the pressure requirements for the heated compressed air.

Gas turbine plant

A method for assembling a turbo-machine of the type comprising a stator housing supporting guide vanes and a rotor having blade discs. According to the method, the stator housing is placed with its axis vertically oriented on a base member which supports the housing both in the vertical and in the horizontal direction. Guide vanes and blade discs are alternately placed in the housing with the guide vanes being secured to the interior of the housing and the blade discs being supported in stacked relationship with interleaved spacing rings on the base member. The stack of blade discs is then secured together as by through bolts passing through aligned apertures in the blade discs. Thereafter, the rotor comprising the assembled blade discs and spacing rings is centered relative to the stator housing. The interconnected stator housing and assembled rotor are then lifted from the base member and moved to a horizontal position. The invention also includes apparatus for interconnecting the rotor and the stator during the assembly operation, and also includes a turbo-machine constructed in accordance with the above-described method.

Method of assembling a turbo-machine, apparatus for use in the method,

Apparatus for the injection of fuel into a gas turbine which is adapted to remove the fuel from the injectors when the turbine is to be stopped. Each injector provides separate, parallel fuel flow paths from a pair of fuel inlet connections toward a plurality of atomizing apertures. When the turbine is to be stopped, one of the inlet connections is connected to a source of compressed air and the other is connected to a sump for the fuel.

Fuel flushing from injector for combustion chamber

An improved combustion chamber for devices such as gas turbines includes a flame tube having burners and a center tube extending through its end wall. The openings for the burners and the center tube are co-planar in the end wall to allow some angular movement of the flame tube relative to the center tube. A bayonet joint between the flame tube and the center tube includes a spherical bearing surface to permit such angular movement but to prevent axial movement. A unique locking pin geometry is also disclosed.

Combustion chamber for gas turbine

An apparatus for starting a turbine plant includes tubing or conduits for directing compressed air to the compressor stage of the turbine plant, whereby the turbine plant may be rotated to a speed sufficient for starting. Arranged in parallel with the compressed air tubing or conduits are additional conduits for conveying dry air to the turbine plant during rest or shutdown periods when the turbine plant is inoperative. A valving arrangement permits selective flow of compressed air through the apparatus for starting the turbine plant or of dry air for maintaining desired conditions within the turbine plant during rest or shutdown conditions.

Apparatus for starting turbine plants

A rotor of self-supporting type for a turbo-machine. The rotor comprises a plurality of axially spaced discs which are interleaved with spacing rings and with the assembled combination of discs and rings held together by through bolts. Each spacing ring is provided on each opposed face with an annular shoulder which mates with a cooperating annular shoulder on an opposing face of an adjacent disc so as to prevent relative radial movement among the assembled discs and rings. A portion of each ring extends radially inwardly of its annular shoulders and is provided with a thickness in the axial direction which is less than the spacing between the opposing surfaces of the adjoining discs.

Growing community of inventors

Finspong, Sweden

Ragnar Torstenfelt