| 摘要 |
The invention relates to mechanical engineering and can be used for forming two-component supersonic gas-flame jets during restoration and improvement of technical characteristics of parts or wearing parts of aircraft industry, rocketry, and general engineering. The disclosed flame torch for supersonic deposition of coatings is equipped with a housing of torch, an external nozzle, which is disk-shaped. The torch is equipped with a main combustion chamber with a diffuser made in its housing, longitudinal grooves on the outer surface of the housing of main combustion chamber, each of which ends with a radial hole for a tube of supply of fuel component, which are laid from the collector to the main combustion chamber and form an additional unit of heat supply to the working jet by a nozzle installed at inlet to the main combustion chamber, which has an axial hole for supply of powder of sprayed material, which is transported by oxygen, and radial holes for supplying gaseous fuel installed outside the housing of main combustion chamber on its lugs and an adjusting belt by the housing of cooling jacket of main combustion chamber with a coolant drain pipe and a mouth piece, a diaphragm, which is located between the outer surface of the housing of main combustion chamber and the hollow disk-shaped central body with a pipe for supplying coolant, the mouth piece and a vortex generator, a fixing ring located at the junction of the housing with the cooling jacket with the hollow disk-shaped central body, the combustion chamber of external nozzle installed at its inlet equipped with the pipe for supplying fuel with the mouth piece, installed in the housing of torch: a bushing with a spark plug and two tubes for supplying oxidizer to the nozzle of the combustion chamber of outer nozzle with mouth pieces, a mixing chamber formed by the torch housing and located between the exit sections of diffuser and external nozzle from one side and the exit section of torch - from the other side, the housing of cooling jacket outside the outer tube with the nozzle for supply of coolant with the mouth pieces mounted on the torch in such a way that between them an annular channel is formed. In addition, in the places of supply and removal of coolant in the housing of cooling jacket of the main combustion chamber, in the hollow disk-shaped central body and in the housing of cooling jacket of external nozzle annular eccentric grooves are made, which provide for uniform rate of flow of cooling liquid along the annular channel. |
