The automatic filling system for gas cylinders adopts automatic intelligent filling and intelligent management technology, which can effectively reduce the occurrence of personal injury accidents. During normal filling, the liquid chlorine filling system is equipped with an early warning system. When the value reaches the specified limit, it will issue an early warning. When the specified filling volume is reached, it will automatically cut off the filling valve through interlock. After the chlorine gas pipeline leaks, when the quality concentration of chlorine gas in the space exceeds 1mg/m³, the on-site toxic gas detector will detect the chlorine gas leakage and give an alarm. When the alarm value is reached, the system will interlock the opening of the chlorine gas evacuation valve and the closing of the liquid chlorine filling valve, and remotely start the accident caustic liquid spray system to spray caustic liquid. During this process, personnel do not need to operate at close range on site.

The cylinder scale system consists of a weighing instrument, a weighing sensor electrically connected to the scale platform, a filling drive mechanism, a filling platform, and a filling mechanism. The cylinder is placed on the filling platform, which is suitable for positioning and placing the cylinder, and the weighing sensor is adapted to collect the weight data of the cylinder in real time and send it to the weighing instrument. The weighing instrument controls the filling drive mechanism to drive the filling mechanism to fill the cylinder placed on the filling platform. When the weight data collected by the weighing sensor reaches the preset value, the function of uniform filling can be achieved by collecting the weight data of the cylinder.

The cylinder scale adopts automatic height compensation, automatic zeroing, automatic zero-point tracking; manual/automatic switching; real-time monitoring of filling conditions; the software has safe operation features; it also has a database for filled bottles, which manages whether the filled bottles are qualified or registered based on the database, and stores the measurement results after the filling process. The human-machine interface is a three-dimensional dynamic simulation graphic, showing the real-time weight during filling; an alarm prompt is given upon the completion of filling, and an effective information is automatically formed and saved; the filling database information can be saved, backed up, restored, queried, printed, and statistically processed. The software implements hierarchical management; a data link function is reserved, which can link the data of the automatic control system according to the corresponding format of the safety supervision bureau database.

Weighing filling machine is a weighing filling, filling control, discharge and other computerized production process control and data management as one of the integrated automated filling control system, liquid filling machine using Mitsubishi Q series PLC and Advantech industrial control microcomputer to set up a high-performance control platform.

Weighing filler consists of feeding pump, solenoid valve, pipeline and weighing system. When the liquid level of the reaction tank is lower than a certain position, the solenoid valve opens, and the liquid flows into the dosing tank through the feeding pump and pipeline, and the solenoid valve closes when the liquid reaches the liquid level height.

The weighing and filling line picks up the weight through the pressure weighing module, and amplifies and filters the picked up weight signal, then enters into the A/D converter for analog-to-digital conversion, and then sends it into the microcontroller to analyze and process the signal, and the result is outputted to the industrial control through the serial port of RS232C communication, and meanwhile, it makes the corresponding reaction and executes the corresponding operation according to the result of the signal.

The filling system integrates machine, light, electricity and gas, computer program control electromechanical weighing equipment, weighing type measuring principle, volumetric type and other various filling methods. Unaffected by various external factors such as material temperature, density, viscosity, gas content, etc., the machine automatically feeds into the barrel, automatically removes the skin, automatically dives down, automatically fills, automatically lifts, and automatically outputs in a high-precision weight-detecting manner.

Weighing and filling equipment is programmed and controlled according to the process requirements, through weighing system and PLC program to control the weight and flow of materials loaded into the weighing drum, so as to realize accurate measurement and dosing. With strong stability and high cost performance, it can provide accurate measurement data and control means for production control and management of various industrial sites.

The automatic weighing filling machine provides dual power supplies or industrial Ethernet communication modules for each subsystem and combines them. The safe, reliable and advanced practical system design selects mature and advanced distributed computer control systems, which are transmitted to the central control room through a high-speed network for centralized monitoring and management. The central control room host also transmits control commands through a high-speed network to the PLC measurement and control terminal to implement decentralized management of each unit.