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Whole-machine dynamic balancing device and method for micro turbojet engine

A technology of a turbojet engine and a balancing device, which is applied in the field of construction machinery, can solve problems such as the inability to meet the requirements of the rotor dynamic balance accuracy of a miniature turbojet engine, and achieve the effects of avoiding errors, high dynamic balance accuracy, and high balance accuracy.

Inactive Publication Date: 2020-04-21
BEIJING POWER MACHINERY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the object of the present invention is to provide a micro turbojet engine complete dynamic balancing device and method, which solves the problem that the traditional combined dynamic balancing method cannot meet the micro turbojet engine rotor dynamic balance accuracy requirements

Method used

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  • Whole-machine dynamic balancing device and method for micro turbojet engine
  • Whole-machine dynamic balancing device and method for micro turbojet engine
  • Whole-machine dynamic balancing device and method for micro turbojet engine

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with specific embodiments.

[0021] Such as Figure 1-3 Shown, a kind of miniature turbojet engine complete dynamic balancing device, described device comprises dynamic balancing machine, front connecting plate 1, rear connecting plate 2 and two pneumatic nozzles 4, wherein, front connecting plate 1 and rear connecting plate 2 They are respectively connected to the two swing frames of the dynamic balancing machine, and the two pneumatic nozzles 4 are respectively connected to the pneumatic devices on the dynamic balancing machine; one end of the front connecting plate 1 is provided with an arc-shaped notch matching the side end surface of the front end of the micro-turbine engine 3 ; One end of the rear connecting plate 2 is provided with an arc-shaped notch matching the rear end face of the micro-turbine engine 3, and a via hole for threaded connection with the rear end of the engine is open...

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Abstract

The invention, which belongs to the field of engineering machinery, relates to a whole-machine dynamic balancing device and method for a micro turbojet engine. Under the condition that all rotor pieces and stator pieces of the micro turbojet engine are assembled together, an engine is fixed to a supporting swing frame of a horizontal dynamic balancing machine through a connecting plate. A pneumatic nozzle is designed to be connected with a pneumatic device arranged on the dynamic balancing machine, then a turbine rotor arranged on the engine is blown to rotate through a pneumatic device and apneumatic nozzle, the engine is blown to rotate at a balanced speed, and then dynamic balance testing and correction are carried out. And after completion, the engine does not need to be disassembled,subsequent final engine assembly can be directly carried out, so that repeated assembly errors after dynamic balance of the traditional combined rotor are avoided, the balance precision is high, andthe production efficiency is high.

Description

technical field [0001] The invention relates to a complete dynamic balance device and method of a miniature turbojet engine, which belongs to the field of construction machinery. Background technique [0002] The micro-turbojet engine is small in size, light in weight, and its working speed is as high as 10000r / min. In order to ensure the vibration performance of the engine, the precision of its dynamic balance is relatively high. The remaining unbalance of each correction plane is required to be no more than 0.3g·mm. The dynamic balancing method adopted by the traditional engine is that the compressor, turbine rotor, shaft and other rotor parts are firstly balanced individually, and then all the rotor parts are assembled for combined rotor dynamic balancing. After dynamic balancing, the circumferential positions of the parts are marked. Then disassemble and carry out the final assembly of rotor parts and stator parts. However, the compressor of the micro-turbojet engine is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/38G01M1/30G01M1/14G01M1/02G01M15/02
CPCG01M1/30G01M1/14G01M1/02G01M15/02
Inventor 周建华张海张有瑞蒋卫东郑严
Owner BEIJING POWER MACHINERY INST
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