Output torque measurement device of turboshaft engine

Abstract

The invention provides an output torque measurement device of a turboshaft engine. The device comprises a power turboshaft, a reference shaft, a power turbine phonic wheel, an angle sensor and an electronic controller, wherein the power turboshaft comprises an input end and an output end which is connected with a load; the reference shaft is fixedly installed on the input end by a fixed end; a free end is cooperatively sheathed with the output end; the free end comprises first torque measuring teeth axially extending; the power turbine phonic wheel is fixedly sheathed at the output end; the power turbine phonic wheel comprises second torque measuring teeth; the second torque measuring teeth and the first torque measuring teeth are evenly crossed and cooperated at an interval; and the angle sensor is electrically connected with the electronic controller. The output torque measurement device is positioned in a low-temperature zone in the front of the turboshaft engine, so as to improve the measurement precision. Meanwhile, the device has simple structure, is convenient to operate and does not need other associated equipment, so that the weight of the engine is lightened, and the pneumatic loss of the engine is reduced. In addition, the device can conveniently measure the output torque and the output power of the turbine engine.

Description

technical field [0001] The invention relates to the field of gas turbine engines, in particular to an output torque measuring device of a turboshaft engine. Background technique [0002] The turboshaft engine transmits the mechanical work output by the power turbine to the helicopter transmission system through the power turbine transmission shaft. In order to evaluate the performance of the turboshaft engine during the test run, it is necessary to measure the output power of the turbine engine. [0003] Generally speaking, the output power of the turboshaft engine cannot be measured directly, so it is necessary to obtain other physical quantities through a special measuring device to obtain the output power indirectly. For example: According to the relationship between power and torque, the output power can be calculated by measuring the torque. [0004] The existing method of torque measurement is as follows: a torque measurement device is installed at the rear of the en...

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Problems solved by technology

[0009] The purpose of the present invention is to provide an output torque measuring device of a turboshaft engine to solve the technical problems of the existing torque measuring devices such as low accuracy, cumbersome structure, and complicated operation.

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