2 results about "Elbow" patented technology

The invention discloses a reverse flow combustor and a double-wall elbow structure thereof and relates to the field of aero-engines. The double-wall elbow structure comprises an inner elbow wall and an outer elbow wall; in the flowing direction of fuel gas, the inner elbow wall is divided into an upper inner elbow wall section and a lower inner elbow wall section, cooling structures of the two regions are different, the upper inner elbow wall section is provided with multiple rows of diverging holes, besides the fact that certain included angles are formed between the diverging holes and the wall of the upper inner elbow wall section, certain deflection included angles are formed between the diverging holes and the flowing direction of the fuel gas, and compound angles are formed; the lower inner elbow wall section is provided with a plurality of rows of diverging holes, certain included angles are formed between the diverging holes and the wall of the lower inner elbow wall section, and deflection included angles are not formed; and the inner elbow wall is sleeved with the outer elbow wall, a middle cavity is formed between the inner elbow wall and the outer elbow wall, and impactholes are formed in a shell of the outer elbow wall. By means of the elbow structure, the peak wall temperature at the start section of the inner elbow wall and the wall temperature gradient of an elbow can be effectively reduced, and therefore the strength of the elbow is improved, and the service life of the elbow is prolonged.

The invention provides a double 360-degree watering device. The device comprises a cooling water branch pipe, a control switch, a first elbow pipeline, a second elbow pipeline and an atomizing nozzle,wherein a first rotary joint is arranged between the control switch and the first elbow pipeline, a second rotary joint is arranged between the first elbow pipeline and the second elbow pipeline, thefirst rotary joint and the second rotary joint correspondingly comprise male joints and female joints, wherein the male joints and the female joints are connected with each other, and spherical connection rotating structures are arranged between the male joint and the female joint of the first rotary joint and the male joint and the female joint the second rotary joint. The double 360-degree watering device can achieve full-angle three-dimensional watering without dead angles in two cooling planes.