Patent Application
20100199630
This invention relates generally to combined cycle turbine engines and, more particularly, to compact combined-cycle gas-steam turbine engines for generators or other standard applications.
It has long been known combined cycle turbine engines use the waste heat from gas turbine engines to heat a boiler creating steam to drive a separate steam turbine engine. In this configuration combined cycle turbine engines are limited to large stationary applications. Construction of a combined cycle turbine is very expensive and it is very complicated to operate.
It is desireable to provide such an engine which is less costly, more compact and operates on alternate fuels and water. The efficiency of combined cycle turbine engines is well documented as being one of the highest. This is why development of this turbine is important to supply energy at lower cost and higher efficiency with less polutants being released into our atmosphere, than with standard gas engines.
It is a principal object of my invention to provide a new and improved turbine for generators or other various uses. More specifically it is an object of the invention to provide such a combination gas and steam turbine, wherein alternate less expensive fuels may be used for combustion, lowering operating cost. Moreover this turbine operates at a lower temperature than gas turbines making it more desireable for different applications. Lower operating temperatures means this turbine dosen't require expensive exotic metals or ceramics in its construction.
The embodiment of this invention achieves the forgoing objects in a combination gas and steam turbine engine, including a rotor having turbine blades for compressing intake air. A gas jet inserted into a mixing tube leading to an igniter for primary combustion. A chamber containing a boiler & tube wound around the outter wall in such a manner as to create a spiraling vortex type air passage for the combustion gasses. And turbine blades attached to the outter rotating wall being driven by the vortex type gas rotation, originating from the combustion of the ignited gas coming from the mixing tube. This hot combustion gas heats the boiler tube generating steam, which is then compressed through jets pointed at the secondary turbine blades adding torque to the rotor. The vortex type combustion chamber gases, still rotating, are then compressed through the opening between the boiler tube and the rotor, at the point of the blade reinforcing flange, which puts these combustion gasses into the same chamber as the steam, heating the steam and in turn cooling the exhaust. This combined stream of gasses are spiraling around a circular drive chamber to the exhaust port, adding more torque to the secondary turbine blade drive, thus increasing efficiency remarkably. The innercooling of the turbine is done by ducting cooled exhaust into the combustion chamber and aided by the arrangment of small turbine type blades and the main intake compressor, which in this example application draws cooling air through and around the generator. Small blades attop the main rotor push air between the wall of the turbine housing and the inner rotor wall, which is then compressed by the small blades on the inside of the housing causing rotation to the exhaust stream.
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This turbine is constructed of standard sheetmetal of various thicknesses, cut, broken, rolled, and welded in a standard metals shop, then balanced by a balancing shop for opptimum performance. Persons experienced in this field would have no problems building or operating this turbine, even adapting it for another purpose. It may be adaped to run off of any standard fuel, and some not so standard. A off the shelf generator and igniter may be used, and this turbine is self starting when ignited, elliminating the need for a starter motor. The valves, tubing, and gages are available at most hardware stores. A person in this trade should have no trouble constructing this turbine, because it is based on known principles with low tolerances, high torque and the size is adaptable to hybrid automobiles, home, camping, even heating among a few of the many applications.
From the preceding discription there has been set forth the preferred embodiment of the present invention, it is evident that the objects of the invention are attained. Although the invention has been described and illustrated in detail it is clearly understood that the same is intended by way of illustration and example only and is not to be taken by way of limitation. Accordingly, the spirit and scope of the invention are to be limited only by the terms of the appended claims.
