SU779594A1 - Axial turbine nozzle apparatus - Google Patents

Description

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This invention relates to a turbine system and can be used in nozzle units of axial turbines.

The well-known axial nozzle apparatus (turbines containing blades with shelves 5 axis of rotation which passes through the central longitudinal axis of the blade

eleven.

 However, such a design of the nozzle apparatus does not allow to increase the efficiency of the 10th engine due to the self-installation of the blades.

Also known to allow the apparatus of the axial turbine containing blades; shelves in the form of parallelograms, the angles of which for the upper and lower shelves are equal to each other and located in the shelves, and the body, the attachment points of the vanes 2.

However, even in this design of the SRP-20 left apparata, it is not possible to reduce worker overflows. body between the shelves.

The purpose of the invention is to reduce the overflow of the working fluid by ensuring contact between the shelves.

The goal is achieved by the fact that the attachment points are made in the form of cylindrical hinges that are coaxial with the output edges of the blades. JO

FIG. 1 shows a nozzle. apparatus, longitudinal section; in fig. 2 is a diagram of the mutual arrangement of the shelves in a cold state; in fig. 3. Scheme of the relative position of the shelves in the hot state.

The nozzle contains blades 1 with upper and lower shelves 2 and 3 in the form of parallelograms, the angles oi of which for the upper and lower shelves 2 and 3 are equal to each other and the fixing points, measured in shelves 2 and 3 and in the case 4, are cylindrical hinges 5 , coaxially with the output edges of 6 blades 1.

When operating the engine shelves 2 and 3.. blades 1 are heated, and expand, after, even at the junction of shelves 2 and 3, there is a mutual pressure that creates a moment that unfolds the blades ... in the opposite direction, until both points are balanced.

Thus, such a design of the nozzle apparatus will completely eliminate the overflow of the working fluid in all engine operating modes, thereby increasing the efficiency of the engine, / Formula of the invention

The nozzle apparatus of the axial turbine, roderzhaschie blades with shelves in the form

Claims (1)

Claim Axial turbine nozzle apparatus containing blades with shelves in the form of ----------.——- y1 ..... . 4 # ύ · / 'g' · * '* Λ · **' ί '·?' 779594 "· Parallelograms whose angles for the upper and lower shelves are equal to each other; and placed in the flanges and the body attachment points of the blades, and by l ^x h and w and d w i with the 'what, in order to reduce the working fluid leakages by providing intimate contact between the shelves performed mountings Order 7986/45 Draw 583 Signature of the yen in the form of cylindrical hinges coaxial with the outlet edges of the blades.