Nozzle and apparatus for cooling jet engine for maintenance and method for maintenance of jet engine

1. An apparatus for cooling a jet engine for maintenance, wherein the jet engine comprises an exhaust channel for the exit of exhaust gases of the jet engine, and wherein the apparatus comprises:

a nozzle, the nozzle comprising:

a suction adapter having an annular shape configured to correspond to a shape of the exhaust channel, wherein the suction adapter comprises a semi-open annular channel defined between a first rim at an inner periphery of the semi-open annular channel and a second rim at an outer periphery of the semi-open annular channel, wherein the suction adapter comprises an elastic material configured to form a seal with the exhaust channel, and wherein the suction adapter is configured to be sealably connected to the exhaust channel;

a suction channel in fluid connection with the suction adapter, wherein the suction channel is connected to the semi-open annular channel of the suction adapter; and

an air suction device connected to the suction channel, wherein the air suction device sucks air from the exhaust channel of the jet engine to cool the jet engine.

2. The apparatus according to claim 1 , wherein the elastic material is provided at the first and second rims.

3. A method for maintenance of a jet engine, wherein the method comprises steps of:

providing the jet engine which comprises an exhaust channel for channeling exhaust gases of the jet engine,

connecting the apparatus of claim 1 to the exhaust channel, wherein the apparatus further comprises a frame arranged to support the apparatus movably on the ground,

sucking air from the exhaust channel with the apparatus for cooling the jet engine, and

performing maintenance operations to the cooled jet engine.

4. The method according to claim 3 , further comprising:

adjusting a vertical location of the nozzle in relation to the frame.

5. An arrangement for cooling a jet engine for maintenance, the arrangement comprising:

a jet engine comprising an exhaust channel, which is formed by an exhaust pipe and an exhaust cone, and

an apparatus for cooling the jet engine for maintenance, wherein the apparatus comprises:

a frame arranged to support the apparatus movably on the ground,

a nozzle comprising:

a suction adapter having an annular shape configured to correspond to a shape of the exhaust channel, wherein the suction adapter comprises an elastic material that forms a seal with the exhaust channel, and wherein the suction adapter is fitted between the exhaust pipe and the exhaust cone of the jet engine and is sealably connected to the exhaust channel, and

a suction channel in fluid connection with the suction adapter, wherein the suction channel is connected to a periphery of the suction adapter,

an air suction device connected to the suction channel, wherein the air suction device sucks air from the exhaust channel of the jet engine to cool the jet engine,

wherein the nozzle is supported by the frame, and

wherein the air suction device is connected to the nozzle for sucking air from the nozzle.

6. The arrangement according to claim 5 , wherein the frame comprises location adjustment means for adjusting a vertical location of the nozzle in relation to the frame.

7. The arrangement according to claim 6 ,

wherein the location adjustment means comprises at least one support arm.

8. The arrangement according to claim 7 , wherein the at least one support arm has a telescopic structure for modifying a length thereof.

9. The arrangement according to claim 6 , wherein the frame includes wheels at a bottom of the frame.

10. The arrangement according to claim 5 , wherein the suction adapter includes an inner rim and an outer rim; and

wherein the inner rim contacts the exhaust cone of the jet engine and the outer rim contacts the exhaust pipe of the jet engine.