CYCLONIC EJECTION PUMP

Abstract: The invention relates to a cyclonic ejection pump designed for large flowrates for example applicable to the so called "Oceanic Thermale Energy-Conversion", normally abreviated to OTEC; an energy generating system developed for utilizing the potential thermal oceanic energy as well as those applications for which a large capacity is required. Another essential advance of the pump is its ability to function as a non-return valve.

Description: Cyclonic ejection pump The invention relates to a multiple large debit ejection pump, wherein the ejectors are fitted in between the blades of a turbine wheel. Radial injection takes care for rotation which remains maintained also by special positioning of the exhaust diffusion pressure cone, being mounted such as to provide a certain angle between its longitudinal centre-line with regard to the turbine radins perpendicular to the tangent-line. In this manner inside the inlet nozzle (diametrically relatively being spacious dimensioned) an artificial cyclone is generated, sucking and evacuating the pertaining medium. If applied for pumping powdery or granular material, a gaseous motive power is used, for example dry air. For liquids normally steam shall be applied for said purpose. Gases can be pumped accordingly with advance because of the possibility to evacuate and to pressurize, for which purpose normally steam or gas is used, but a concentrated jet of water is also applicable. One thing and another depends mainly on the nature of the medium under consideration. As long as the radial injection on the turbine blades remains maintained, feed for the rotating ejectors is also available, preventing the pressurated medium from flowing back. Considered as such the cyclonic ejection pump according to the invention can be described as a check valve. Fully automatic control can be obtained by a pressure controlled feed back system. The cyclonic ejection pump according to the invention is especially suited for power stations, more specificly those who derive their energy primary from oceanic thermal energy conversion. By means of the invention the evaporators can be evacuated near to full vacuum. It shall be clear that the pump as described lands itself for all those applications whereby a high capacity must be combined with heating, for example occuring when in a certain system high viscose liquids are used. One embodiment of the invention shall be explained by way of example, with reference to the accompanying drawings, wherin: Fig. 1 represents a diagram of a power station combined with an installation for potable water supply. Fig. 2 represents a cross section of the actual cyclonic ejection pump. Fig. 3 represents a side view of the pump. Essentially the cyclonic ejection pump 1 according to the invention is composed from a stator 1 and a rotor 3, being jointed to the jets 4. The jets 4 are moulded or welded to the rim 5 of the rotor 3. The motive power 6, being a medium specially adapted to the purpose - for example steam - is radially supplied by nozzle 7. The stator 2 is internally provided with a moulded converging compartment 8, protecting the ejectors 4 from wearing due to the material flow 9. The oceanic thermal energy conversion system as shown in fig. 1 presents an integral application example of the pump according the the invention. The vapour 10 of the salt water evaporator 11 is pumped to condesor 12. The supply pump 13 takes care for circulation in the circuit of turbine 14, in which, apart form condesor 12 a condensor 15 is included. The generator 16 is driven by turbine 14. Condenser 12 - essentially being an heat- exchanger - provides condens 17, partly utilized as boiler suppletion water 18 and potable water 19. The generator 16 provides for electricity supply to distribution station 20 and the boiler installation 21 producing the required steam for pump 1.

Claims: CLAIMS 1. Cyclonic ejection pump designed for large debits, having the ejectors fitted inbetween the blades of a turbine wheel, characterized in that radial injection is causing rotation, while this rotation remains maintained also due special positioning of the exhaust diffusion pressure cone, being arranged such as to provide a certain angle between its longitudinal centre line with regard to the turbine radius, perpendicular to the tangent-line. The aforementioned divice keeps the rotation going even when the applicated motive power should be supplied axially to the blades of the turbine wheel. During rotation a strong cyclonic functioning excists, causing and keeping up a stable material flow. 2. Cyclonic ejection pump designed for large debits according to claim 1, characterized in that the pump is made from ceramic material, apart from increased heat resistance causing a film with a thickness depending on the motive power medium used, resulting in wearing decrease because of its natural lubrication property, hence having a centripetal effect to the rotor. 3. Cyclonic ejection pump designed for large debits according to claim 1, characterized in that the pump is part of a pneumatic transport system adapted to the requirements for product flows which are lead through a perforated pipe concentriccally mounted inside a larger pipe, the latter intended for dust transport to the separator. 4. Cyclonic ejection pump designed for large debits according to claim 1 , characterized in that the described system is adapted to pumping of oil and so functioning consisting of several stages in order to avoid hammering. 5. Cyclonic ejection pump designed for large debits according to claim 1, characterized in that the pump according to the invention is linked inbetween a turbine and a condesor in order to reduce the enthalpic wastage. 6. Cyclonic ejection pump designed for large debits according to claim 1, characterized in that the working pressure is increased such as to meet the requirements for a jet-engine, hence the possibility to increase ignation pressure because the resulting temperature rise does not harm the installation. 7. Cyclonic ejection pump designed for large debits according to claim 1, characterized in that several of those pumps are serially connected to a pumpunit intended for hydrogen fired steam turbines, which system makes boilers superfluous. 8. Cyclonic ejection pump designed for large debits according to claim 1, characterized in that the pump is functioning as described and as a vacuum-pump as well, especially used in a cycle system for energy generating and the production of potable water from saline water.

Inventors: BEERLINGS SCIPIO PIETER SJOERD, BEERLINGS, SCIPIO, PIETER, SJOERD
Applicants: BEERLINGS SCIPIO PIETER SJOERD, BEERLINGS, SCIPIO, PIETER, SJOERD
Application year: 1999
Main classification: F04F5
IPC codes: F04F5