Medium-low pressure fuel gas pressure difference power generation system
A technology for power generation system and gas pressure regulation, applied in engine components, machines/engines, steam engine devices, etc., can solve problems such as large power consumption, and achieve the effects of low power supply cost, increased efficiency and good stability
Pending Publication Date: 2021-07-09
UNIV OF SHANGHAI FOR SCI & TECH +1
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Problems solved by technology
Since most natural gas pressure regulating stations have no waste heat available, electric energy or natural gas is usually used for heating. At the same time, there is a certain loss in the heat exchange of the preheater and the conversion of the expansion generator. The heat required for natural gas preheating is more than that of the expansion generator. converted into electrical energy
The invention patent with the application number CN201510285709.5 discloses a combined cycle power generation system utilizing the pressure energy of gas and natural gas pipeline networks. The system includes a pressure energy power generation device and a gas turbine, and a flue gas waste heat recovery is installed between the pressure energy power generation device and the gas turbine. The invention integrates gas turbine power generation and natural gas pressure energy power generation through the flue gas waste heat recovery system. The flue gas waste heat recovery system requires an external power supply and consumes a lot of power. For the purpose of comprehensive power generation efficiency of the power generation system, it is necessary to equip additional energy supply equipment
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[0028] Such as figure 1As shown, a medium-low pressure gas pressure differential power generation system is located between the upstream medium-low pressure gas pipeline 19 and the downstream medium-low pressure gas pipeline 20, and there is a connection between the upstream medium-low pressure gas pipeline 19 and the downstream medium-low pressure gas pipeline 20. The gas pressure regulating station 14 connected through the system includes No. 1 pipeline 17 drawn from the upstream medium and low pressure gas pipeline 19, No. 2 pipeline 18 drawn from the downstream medium and low pressure gas pipeline 20, gas pressure regulating device, transmission device, power generation device, storage Energy device, gas flow meter 3 and a plurality of sensors, the air inlet of the No. 1 pipeline 17 is connected with the gas outlet of the upstream medium and low pressure gas pipeline 19, and the gas outlet of the No. 2 pipeline 18 is connected with the inlet of the downstream medium and low...
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The invention relates to a medium-low pressure fuel gas pressure difference power generation system which is arranged between an upstream medium-low pressure fuel gas pipeline and a downstream medium-low pressure fuel gas pipeline, and a communicating fuel gas pressure regulating station is further arranged between the upstream medium-low pressure fuel gas pipeline and the downstream medium-low pressure fuel gas pipeline. The system comprises a first pipeline, a second pipeline, a fuel gas pressure regulating device, a transmission device, a power generation device and an energy storage device, a gas inlet of the first pipeline communicates with a gas outlet of the upstream medium-low pressure fuel gas pipeline, and a gas outlet of the second pipeline communicates with a gas inlet of the downstream medium-low pressure fuel gas pipeline. The fuel gas pressure regulating device, the transmission device, the power generation device and the energy storage device are sequentially arranged, the fuel gas pressure regulating device is arranged on the first pipeline, the transmission device is arranged between the first pipeline and the second pipeline and communicates with the first pipeline and the second pipeline, the power generation device is in transmission connection with the transmission device, and the energy storage device is electrically connected with the fuel gas pressure regulating station. Compared with the prior art, power generation can be achieved through the gas pressure difference, and the power supply cost is reduced.
Description
technical field [0001] The invention relates to the technical field of energy utilization, in particular to a medium-low pressure gas differential pressure power generation system. Background technique [0002] The gas pressure regulating station is a facility that automatically adjusts and stabilizes the pressure in the pipeline network in the urban gas transmission and distribution system. It is generally installed between pipelines of different pressure levels in the gas transmission and distribution pipeline network system or before some special users. Its task is Adjust the pressure of the upper-level pipe network to the pressure required by the next-level pipe network or users, and keep the adjusted pressure stable. [0003] The gas pressure regulating station is usually unable to directly use municipal power supply due to its remote location and complex on-site environment. In addition, considering the low power consumption of the gas pressure regulating station, if a...
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IPC IPC(8): F01K25/10F01B23/10F01B25/10F01B31/12
CPCF01B23/10F01B25/10F01B31/12F01K25/10
Inventor 佀国宁孙凉英冯毅朱麟徐栎亚
Owner UNIV OF SHANGHAI FOR SCI & TECH