Current position > Contact Us
1. A compressed natural gas dispenser is a specialized equipment that provides compressed natural gas fuel filling services to compressed natural gas vehicles and is equipped with metering and pricing devices. It consists of electronic control devices, filters, one-way valves, solenoid valves, mass flow meters, pressure transmitters, break valves, gun barrels, etc. The following are the main components: a mass flow meter is a measuring instrument that can directly and accurately measure the mass of fluid flowing through it. It is not affected by changes in pressure, temperature, and viscosity during its working process. The solenoid valve for dispenser on the gas dispenser is controlled by an electrical signal to open and close, thereby controlling the opening and closing of the gas circuit of the gas dispenser. 4. Break away the safety device on the coupling valve of the gas dispenser. Under the rated pull-out force, it can be disconnected into two sections and ensure automatic sealing of the opened sections. At the same time, it can be reconnected to ensure the normal use of the gas dispenser. The pressure protection device on the safety valve gas dispenser. When the pressure inside the gas dispenser exceeds the normal working pressure P (i.e. the set opening pressure of the safety valve), the safety valve opens to relieve pressure; When the pressure drops below the P value, it will automatically shut down to ensure that the gas dispenser can work normally. A pressure sensor is a device that outputs an electrical signal that can be processed based on pressure changes within the gas dispenser system. The control in sequence is based on the grouping of gas cylinders on the gas station, and the gas filling control is carried out by filling the car gas cylinders with gas machines in the order of low, medium, and high.
1. cmf is the Coriolis Mass Flow Meter (CMF), and the Coriolis Mass Flow Meter is a novel instrument for directly and precisely measuring fluid mass flow. The main structure uses two U-shaped tubes arranged side by side, causing the bent parts of the two tubes to vibrate slightly towards each other. The straight tubes on both sides will vibrate accordingly, that is, they will approach or open at the same time, that is, the vibration of the two tubes is synchronous and symmetrical.
2、 If fluid is introduced into the pipe while synchronously vibrating, causing it to flow forward along the pipe, the pipe will force the fluid to vibrate up and down together with it. In order to resist this forced vibration, the fluid will give the tube a reaction force perpendicular to its flow direction, which is called the Coriolis effect force. Under this force, the vibration of the tube is not synchronized, and there will be a difference in the timing of vibration between the inlet and outlet sections of the tube, which is called the phase time difference. This difference is directly proportional to the mass flow rate of the fluid flowing through the pipe. If the magnitude of this time difference can be detected through the circuit, then the size of the mass flow rate can be determined.
3、 This type of flowmeter is called the Coriolis direct mass flowmeter, and its biggest difference from dozens of conventional volumetric flowmeters currently in use in the world is the size of the mass it measures, measured in kg/h. A flo
