Integrated device capable of achieving expansion power generation and compression refrigeration through natural gas pressure

Abstract

The invention provides an integrated device capable of achieving expansion power generation and compression refrigeration through natural gas pressure. The integrated device comprises a monitoring and regulating control system, an expansion power generation system and a refrigerant refrigerating system. Integration of power generation and refrigeration is achieved through the expansion power generation system and the refrigerant refrigerating system. Stability of a power generation set is guaranteed through the monitoring and regulating control system, the problem that the load power change is large is effectively solved, the refrigerant compression amount is fast adjusted according to the load changing speed, and therefore the power of a whole load system is matched with the power generating amount, and continuous and stable running of the power generation set is guaranteed. The integrated device can achieve electric power balance and is high in system efficiency and high in broad spectrum performance, cooling capacity is used for making ice, and therefore industrial ice or food ice can be obtained while electric power is obtained.

Description

technical field [0001] The invention relates to a production process and device of compression refrigeration, in particular to an integrated device utilizing natural gas pressure energy to expand power generation and compression refrigeration. Background technique [0002] At present, city gas is mainly transported through the pipeline network system. When natural gas is utilized, the upstream natural gas is transported to city gas or large-scale users through the high-pressure pipeline network. High-pressure natural gas needs to be adjusted according to the user's gas supply pressure requirements. After the pressure is adjusted at natural gas receiving stations or pressure regulating stations in various places, the urban gas pipeline network system is used for downstream users. In the process of pressure regulation, high-pressure natural gas will produce a large pressure drop and release a large amount of energy. Taking a gate station with a daily production of 500,000 cubi...

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Problems solved by technology

However, the sensitivity of the system to load changes is weak, and the adjustment speed of the electric control valve is too slow. Once the load changes too much, it will affect the stable operation and efficiency of the generator

[0005] At present, the generator set can control the relatively stable power generation through the transmission, but the downstream load will change in different time periods, and there will be peaks and valleys of power consumption. At present, there is a lack of a system that can quickly regulate the power generation, so it is prone to s

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