Process and device for generating power by pressure energy of small natural gas pipeline network
A technology of natural gas pipeline network and pressure energy, which is applied in the direction of engine sealing devices, safety devices, pipeline systems, etc., can solve the problems of insufficient economy and no involvement of small natural gas pipeline networks, etc., achieve simple and easy operation of the process, and expand the pressure energy Utilization field, easy maintenance effect
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[0042] Reference for the device composition of the embodiment figure 1 ; The structure diagram of the expander is as figure 2 , 3 Shown.
[0043] (1) The 1.6-4MPa natural gas that meets the instantaneous demand of the urban pipeline network passes through the first electronic control valve 1, the flow regulating valve 2, and then enters the expander 3 to expand and reduce pressure. After the temperature is restored by the pressure and temperature balancer 7, the pneumatic regulating valve 8. Adjust the second electric control valve 9 to 0.2-1.6MPa, and then enter the downstream medium and low pressure gas pipeline network;
[0044] (2) The high-pressure natural gas is expanded by the expander 3 to convert the pressure energy into mechanical energy, and then the rotor speed is matched with the frequency of the generator 5 through the gearbox 4 to generate electricity, which is used to supply small users such as voltage regulating stations or metering stations that cannot be installe...
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