Air starting motor double-turbine driving device

Abstract

The invention discloses an air starting motor double-turbine driving device. The air starting motor double-turbine driving device comprises a shell provided with an air inlet pipe connecting port and an exhaust port, and a primary turbine, a guide wheel, a secondary turbine, an end cover and a main shaft which are arranged in the shell, wherein the primary turbine, the guide wheel and the secondary turbine are connected to the main shaft in sequence; the outer side of the end cover is connected with the shell through a seal ring, an air inlet and injection ports communicated with the air inlet are formed in the inner side of the end cover; the air inlet is connected with the air inlet pipe connecting port, and the injection ports are formed in the circumferential face of the end cover; V-shaped first grooves formed in the circumferential face of the primary turbine are distributed in the circumferential direction; converted V-shaped reversing grooves formed in the circumferential face of the guide wheel are distributed in the circumferential direction, and the guide wheel is fixedly connected into the shell; V-shaped second grooves formed in the circumferential face of the secondary turbine are distributed in the circumferential direction. The air starting motor double-turbine driving device has the advantages of high power, low air consumption, high efficiency, large torque, low voltage drop and small starting pressure.

Description

technical field [0001] The invention relates to the field of air starting motors, in particular to a twin-turbine driving device for an air starting motor. Background technique [0002] The air starter motors widely used at this stage are mainly divided into two types according to the structural form: vane type and turbine type. The vane air starter motor drives the starter motor gear and the engine flywheel to rotate through the compressed air to push the vane to rotate. The vane air starter motor is mainly used in pneumatic tools, high-speed rotating machinery and mining machinery, etc. It has the advantages of explosion-proof, high starting torque, overload protection, small temperature rise, and long-term full-load operation. However, compared with the turbo-type air-starting motor, under the same load capacity, the vane-type air-starting motor is bulky, consumes a lot of air, and has low efficiency. Moreover, the vane air starter motor is noisy and needs air lubricati...

AI Technical Summary

Problems solved by technology

[0003] At present, the turbo-type air starter motors used in China are generally driven by a single turbine. Although the single-turbine air starter motor has advantages over the vane-type air starter motor, the traditional single-turbine air starter motor still has low output power and low air consumption. Large, low efficiency, small torque, high pressure drop, high starting pressure, turbo lag and other disadvantages

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