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Method and apparatus for pneumatically driving a turbocharger rotor in a balancing machine

A turbocharger and pneumatic drive technology, applied in static/dynamic balance testing, mechanical equipment, electric controllers, etc., can solve problems such as speed deviation, and achieve the effect of low structural cost and reliable process

Active Publication Date: 2017-03-22
SCHENCK ROTEC GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If there are speed deviations due to pressure fluctuations in the compressed air supply or due to influences caused by batch conditions, these speed deviations must likewise be compensated by the operator

Method used

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  • Method and apparatus for pneumatically driving a turbocharger rotor in a balancing machine
  • Method and apparatus for pneumatically driving a turbocharger rotor in a balancing machine

Examples

Experimental program
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Embodiment Construction

[0026] exist figure 1 In the circuit diagram shown, a turbocharger rotor 1 with a vertical axis of rotation is schematically shown and the means for its rotatable mounting are not shown. The turbine wheel of the turbocharger rotor 1 is located between the drive nozzle 2 and the brake nozzle 3 lying opposite it. The drive nozzle 2 is arranged such that the air jet generated by it drives the turbocharger rotor 1 in the normal direction of rotation of the turbocharger rotor 1 . In contrast, the brake nozzle 3 is arranged such that the air jet generated by it is counter to the normal direction of rotation and thus has the effect of braking the turbocharger rotor 1 .

[0027] The drive nozzle 2 is connected to two parallel line branches 5 , 6 via a directional control valve 4 with ODER function. The line branch 5 leads to a rapid acceleration valve 7 which is formed as a solenoid-switchable bypass valve with pilot control. An adjustable two-way non-return valve 8 is provided on ...

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PUM

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Abstract

The invention relates to a method in which the speed of rotation of a turbocharger rotor (1) measured by a speed sensor (26) is regulated by means of a memory-programmable control device (24) with an adjustable internal regulator (25). Driving power for driving the nozzle (2). The parameters required for regulation are empirically determined by a regulation procedure in which the controller (25) is set to a proportional relationship with a larger amplification factor Kp and the balanced rated rotational speed is entered as the desired value of the controller (25) , monitor and compare actual speed and rated value. When the actual rotational speed exceeds the adjusted rated value, the amplification factor Kp of the regulator (25) is halved, and the above process is repeated until the actual rotational speed is below the adjusted rated value. The actual speed is then brought closer to the rated speed by generating the additional rated value, adding the additional rated value to the rated value, and reducing or increasing the additional rated value until the rated speed of the turbocharger rotor (1) is achieved.

Description

technical field [0001] The invention relates to a method and a device for pneumatically driving a turbocharger rotor in a balancing machine, wherein the drive power of the pneumatic drive can be adjusted by means of a pressure regulating valve connected upstream of the pneumatic drive, and the turbocharger The rotational speed of the rotor is determined by a rotational speed sensor and transmitted as a rotational speed signal to the control device. Background technique [0002] Exhaust-gas-driven turbochargers have a turbocharger rotor that can reach very high operating speeds of more than 100,000 rpm during operation and must therefore be adjusted very precisely in order to avoid excessive bearing loads and noise balance. A turbocharger rotor typically consists of a shaft supported in a bearing housing that supports the turbine wheel at one end and the compressor rotor at the other end. In order to measure the unbalance it is desirable to run the turbocharger rotor at an ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B11/36G05D13/62G01M1/00
CPCG05D13/62G05B11/36G05B2219/41303G05B2219/41304G01M1/02F04D27/001F04D29/662F04D15/0088
Inventor F.霍尔
Owner SCHENCK ROTEC GMBH