Avoidance of continuous operation in frequency converter-stimulated torsion resonances of a compressor train

A technology of compressor unit and frequency converter, applied in the field of compressor unit, can solve problems such as high cost, and achieve the effects of reliable component damage and fail-safe service life

Inactive Publication Date: 2014-11-19
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] Dismantling and replacing or repairing damaged components of the compressor train and the required downtime of the facility results in high costs

Method used

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  • Avoidance of continuous operation in frequency converter-stimulated torsion resonances of a compressor train
  • Avoidance of continuous operation in frequency converter-stimulated torsion resonances of a compressor train
  • Avoidance of continuous operation in frequency converter-stimulated torsion resonances of a compressor train

Examples

Experimental program
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Effect test

Embodiment

[0080] Example: avoiding continuous operation in torsional resonance excited by a frequency converter of a compressor train ( Figure 1 to Figure 4 )

[0081] figure 1 (Schematically) shows a compressor installation 50 , for example for the liquefaction of natural gas, which has a compressor train 1 with a single-shaft turbo compressor 51 , simply referred to as compressor 51 .

[0082] A converter-controlled electric motor 2 is used in the compressor unit 1 (which drives the compressor unit 1 at a variable rotational speed 6 ) in order to be able to realize the operating speed range of the compressor installation 50 or compressor 51 (power range of the installation 50, see image 3 Compressor characteristic curve family 52).

[0083] In this case, the required performance (for example for the compressor 51 or the compressor assembly 1) in the compressor assembly 1 is changed or increased (cf. figure 2 , required for the power ramp 53) the rotational speed change 130 is ...

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PUM

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Abstract

The invention relates to a method (100) for controlling a rotational speed (6) of a compressor train (1) that can be driven at an adjustable rotational speed (6) using a drive unit (2), a corresponding arrangement (200) and a compressor train (1) with a frequency converter-guided drive unit (2) that can drive the compressor train (1) at an adjustable rotational speed (6) and a frequency converter (3) guiding the drive unit (2). According to the method (100), a load value (8) describing a dynamic torsion load (7) in the compressor train (1) is measured (110) at a current rotational speed (6) of the compressor train (1) driven by the drive unit (2). The load value (8) is compared (120) to a predetermined limit value (9, 10, 11) and, if the load value (8) satisfies a predetermined condition relative to the predetermined limit value (9, 10, 11), the current rotational speed (6) in the compressor train (1) is adjusted (130) using the drive unit (2). The arrangement (200) has a detection device (210) and a control unit (220), which are designed to perform the method (100). The compressor train (1) has a frequency converter-guided drive unit (2) which can drive the compressor train (1) at an adjustable rotational speed (6), a frequency converter (3) guiding the drive unit (2), and the arrangement (200).

Description

technical field [0001] The invention relates to a method for controlling the rotational speed of a compressor train which can be driven at a variable rotational speed by means of a drive unit and a device for controlling the rotational speed of a compressor train which can be driven at a variable rotational speed by means of a drive unit . [0002] Furthermore, the invention relates to a compressor assembly having a frequency converter-controlled drive unit capable of driving the compressor assembly at a variable rotational speed and a frequency converter for controlling the drive unit. Background technique [0003] Compressors or devices for compressing fluids are used in different fields of industry for different applications, where this involves the condensation or compression of fluids, in particular (process) gases. [0004] Known examples for this are turbocompressors in mobile industrial applications, such as in exhaust gas turbochargers or in jet power plants, or al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P23/04F16F15/10F16F15/18
CPCF16F15/10F16F15/18F04D27/0261F04D29/668Y02B30/70F04D25/06F04D27/004
Inventor 福尔克尔·胡滕
Owner SIEMENS AG
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