Gas station release device Flow Description First, automotive head to pry the car filled with compressed natural gas stations to pull to the stage of high-pressure gas discharge hose CNG pry connected by high-pressure pipeline, natural gas into the release mechanism. After the release of natural gas into the system, go through the filter, and then the primary heat exchanger for heating, natural gas heated by the primary regulator of the pressure adjusted to 1.6MPa, and then into the secondary regulator, the pressure is raised desired pressure. In the heat, pressure process, with natural gas low temperature protection, over voltage protection after pressure outlet pressure level of overpressure protection (overpressure off and safety relief), releasing the outlet (overpressure off and safety relief). After the release device by compressed natural gas pressure regulator, and then the measurement and processing smelly, entering the network. Performance regulator, metering devices double entrance two-way configuration, using a prepared form an open, each independent of each other, if necessary, at the same time two-way work. Each two-stage decompression, two heat exchangers, pressure levels to ensure a reasonable, steady pressure distribution, two-stage heat exchanger to ensure that the process of decompression of compressed natural gas in its temperature is about 5 ℃. A regulator outlet pressure rating before 25 MPa, a regulator outlet pressure is 1.6 ~ 2.0 MPa, two regulator outlet pressure 0.1 ~ 0.4MPa (or according to user needs), due to compressed natural gas regulator, Working pressure metering device is relatively high (20MPa), and a wide range of pressure variation, and therefore the strict requirements of rationality regulator, metering device structure, but also to fully take into account the pressure regulator, the metering device selection supporting security and reliability. The unit production HXR / CNG type regulator, metering device in the safe operation took redundancy designed to ensure real-time and reliability of the signal, with automatic voltage regulator, auto-off and automatic alarm function. Total entrance with emergency shut-off valve, any failure to achieve each, immediately cut off the inlet gas source, to ensure the safety of persons and regulating devices. Each stage and two-stage pressure regulator with overpressure relief cut, is controlled by dual redundant alarm chain, to ensure the safe operation of the entire device.