RU96124249A - METHOD AND DEVICE FOR WET CLEANING OF THE NOZZLE RING OF A GAS TURBOCHARGER TURBINE EXHAUSTING A GAS TURBINE - Google Patents

Claims (13)

1. A method of wet cleaning a nozzle ring of an exhaust gas turbine, in which water (37) is injected in front of the nozzle ring (7) into the ICE exhaust gas stream, characterized in that after determining the need for cleaning, an automatically running cleaning cycle is started in which water ( 37) several times for a short time are injected into the zone in front of the nozzle ring (7) and a pause is maintained between the injections for re-heating the nozzle ring (7).  2. The method according to p. 1, characterized in that up to five injection processes are sequentially performed and an injection duration of less than 10 s for each injection process is observed, as well as a pause between injections equal to at least 20 times the duration of the injection.  3. The method according to p. 1 or 2, characterized in that the water (37) is injected at right angles to the direction (31) of the exhaust gas flow.  4. The method according to p. 1 or 2, characterized in that the water (37) is injected in the direction (31) of the exhaust gas stream.  5. The method according to PP. 1-4, characterized in that water is added to the water (37) before injection with additives having a cleansing effect.  6. A device for wet cleaning the nozzle ring of a gas turbine turbine containing at least one casing (1) with gas inlet (2) and gas outlet (3) housings located in the casing (1) mounted on the impeller shaft (4) ( 5) made between the impeller (5) and the casing (1) a flow channel (8) for the internal combustion engine exhaust gas, a nozzle ring (7) located in front of the impeller (5) and at least one located in front of the nozzle ring (7) ) a nozzle (11) fed by water (37) through the supply line (18), moreover, in the supply line (18) an executive link (23) which interacts with a measuring link (28) detecting changes in the state of the exhaust gas, characterized in that at least one radial hole is made in the gas inlet housing (2) in the area in front of the nozzle ring (7) ( 10), a nozzle (11) is installed in each hole (10), connected via a corresponding line (12) to the supply line (18), while a control element (27) is located between the measuring (28) and executive (23) links.  7. The device according to claim 6, characterized in that each nozzle (11) has at least one mouth (32) directed into the flow channel (8) and enters the flow channel (8) only with its mouth (s) ( 32).  8. The device according to claim 7, characterized in that each nozzle (11) has a throttling place (29), to which two distribution channels (30), made with a larger overall diameter than the diameter of the throttle position (29), are adjacent downstream moreover, each distribution channel (30) has a lateral mouth (32) oriented at a right angle to the direction (31) of the exhaust gas flow and directed into the flow channel (8). 9. The device according to claim 8, characterized in that each nozzle (11) has a mediatrix (34), and the distribution channels (30) have a middle axis (35) and between the mediatrix (34) and the middle axes (35) is formed accordingly, the injection angle (36) is about 60 ^° .  10. The device according to claim 7, characterized in that the mouth (mouth) (32) of the nozzle (11) is oriented (oriented) in the direction (31) of the exhaust gas stream.  11. The device according to paragraphs. 6-10, characterized in that the supply line (18) is upstream branched into a line (19) for water and a line (20) for air, in which a second actuating element (24) is installed, also connected to a control element (27) .  12. The device according to claim 11, characterized in that check valves (21) and (22) are installed in the line (19) for water and the line (20) for air.  13. The device according to paragraphs. 6-12, characterized in that in or on the gas inlet housing (2) there is an annular line (13) connecting the lines (12) leading to the nozzles (11) with a supply line (18).