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Multi-stage compression cooling system of natural gas compressor and method for controlling same

A cooling system, natural gas technology, applied in pump control, mechanical equipment, machine/engine, etc., can solve problems such as poor energy consumption, neglect of skid body temperature, poor station application and cost control, and achieve noise reduction and real-time response to loads. changes, the effect of ensuring consistency

Inactive Publication Date: 2015-09-23
安姆达清洁能源技术(苏州)有限公司
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Problems solved by technology

[0002] At present, most station-level natural gas compressors use star-delta start or soft start, which has a certain impact on the power grid and requires relatively high transformer capacity, and the application for station construction and cost control are relatively poor.
Most of the compressors are air-cooled, and the motor starts directly without speed regulation, ignoring the control of noise and skid body temperature
The control of energy consumption is relatively poor, and it is impossible to adjust the speed of fast charging or slow charging for load changes in real time

Method used

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  • Multi-stage compression cooling system of natural gas compressor and method for controlling same

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] Such as figure 1 As shown, the natural gas compressor multistage compression cooling system of the present invention comprises natural gas low pressure inlet 10, at least two stages of natural gas compression cooling devices and natural gas high pressure exhaust outlet 24, wherein, natural gas low pressure inlet 10, each stage of natural gas compression cooling device and natural gas The high-pressure exhaust outlet 24 is sequentially connected through pipelines along the natural gas flow direction; each stage of natural gas compression cooling device includes cylinders and cooling devices c...

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Abstract

The invention discloses a multi-stage compression cooling system of a natural gas compressor. The multi-stage compression cooling system of the natural gas compressor comprises a natural gas low-pressure inlet, at least two stages of natural gas compressing and cooling devices and a natural gas high-pressure exhaust outlet which are sequentially connected through pipelines in the flowing direction of natural gas. The invention further provides a method for controlling the system. The method includes the steps that the natural gas compressor is started through a frequency converter and subjected to process control, the frequency converter is used for adjusting and controlling the flow amount of a compressor motor and a cooling fan in a proportion integration differentiation (PID) mode, and therefore the internal temperature of a skid is controlled. The natural gas compressor is started through the frequency converter, so that a power grid is not affected, and the changes of loads can be responded in real time. PID rotary speed adjustment is carried out on a motor of the cooling fan according to needs by comparing the internal temperature of a skid with the environmental temperature, multi-stage full control is carried out on the temperature of the skid of the compressor, and noise is reduced correspondingly.

Description

technical field [0001] The invention relates to the field of natural gas compressors, in particular to a multi-stage compression cooling system for natural gas compressors and a method for controlling the system. Background technique [0002] At present, most station-level natural gas compressors use star-delta start or soft start, which has a certain impact on the power grid and requires relatively high transformer capacity, and the application for station construction and cost control are relatively poor. Most of the compressors are air-cooled, and the motor starts directly without speed regulation, ignoring the control of noise and skid body temperature. The control of energy consumption is relatively poor, and it is impossible to adjust the speed of fast charging or slow charging according to the load change in real time. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a multi-stage comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B41/02F04B41/06F04B39/06F04B49/06F04B37/12F04B51/00
Inventor 顾显清王亚军
Owner 安姆达清洁能源技术(苏州)有限公司
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