Starting method of high-speed high-power compressor

Abstract

The invention relates to a starting method of a compressor, in particular to starting of a high-speed high-power compressor suitable for the natural gas industry, and discloses starting of the high-speed high-power compressor. Starting of the high-speed high-power compressor comprises the following steps: monitoring suction pressure to determine whether the suction pressure is higher than a pressure set value required by cleaning; if the suction pressure is lower than the pressure set value required by cleaning, sequentially carrying out the operations of cleaning, decompressing, pre-lubricating, and motor starting; if the suction pressure is higher than the pressure set value required by cleaning, starting the motor. According to the starting method of the high-speed high-power compressor, disclosed by the embodiment of the invention, the steady operating time of the compressor is increased, and the reliability of the compressor is also improved.

Description

technical field [0001] The invention relates to a starting method for a compressor, more specifically, relates to a starting method for a high-speed and high-power compressor suitable for the natural gas industry. Background technique [0002] The speed is 1r / min, the power is 6kW, and the high-speed and high-power compressor is still blank in China. At present, similar units in use in domestic natural gas pressurized gathering and transportation, and gas injection in gas storage are all imported from abroad. For the compressor, when the compressor starts to work, the compressed gas will generate a lot of heat and cause the temperature to rise. In order to cool the compression cylinder as soon as possible, the existing technology basically adopts water-cooled or air-cooled compression cylinders. . The water-cooled compression cylinder needs to be designed as a double-layer structure in order to cool the compression cylinder through water in the middle; the air-cooled compre...

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Problems solved by technology

[0007] The start-up method of the prior art: since this kind of large-scale compressor was not produced in China in the past, it was all started according to the start-up method of the smaller type of natural gas compressor when starting, so the main problem is: whether it is a new Due to the large size of the compressor, or the compressor after shutting down for maintenance, before starting, the lubrication of each moving part can hardly meet the lubrication requirements of operation, and the cleaning of the inside of the body still needs to be compared. Thorough cleaning can only be started. In terms of preheating, motor start-up, pressure detection and other aspects, it needs to be fully prepared before the whole machine can be put into operation. Direct start-up driven by electric motor or diesel engine, due to insufficient preparation of various key components before operation, often leads to failure of some components, resulting in shortened stable running time and reduced reliability

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