The cylinder scale is a professional Electronic scale specifically designed for weighing the gas stored in cylinders. It adopts a frame structure for the scale body, and its surface is coated with multiple layers of anti-corrosion coatings, which are corrosion-resistant and easy to clean. The steel cylinder support on the scale platform allows for the convenient rotation of the cylinders. It is equipped with a high-precision shear beam type weighing sensor and an intelligent weighing instrument to form a Weighing system. This system has high accuracy and stable operation. In addition, it uses an integral frame, which is easy to move, and has a simple structure, convenient installation, maintenance, high precision, and good long-term stability. It is widely used in industries such as chemical engineering, tap water, textile printing and dyeing, and pesticide manufacturing. The weighing control system is managed through electrical control and visual human-machine software configuration, achieving dynamic weighing and batching control as a complete set of automated equipment. The electrical control part of the system uses Siemens PLC, which is programmed and controlled according to production requirements; the software uses human-machine configuration, and through the monitoring system and PLC program, it controls the weight and flow of the materials loaded into the weighing hopper, thereby achieving precise measurement and batching. The system has strong stability, high cost performance, and can provide accurate measurement data and control means for various industrial sites' production control and management. 

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, filling the cylinder placed on the filling platform, and when the weight data collected by the weighing sensor reaches the preset value, it realizes the function of uniform filling by collecting the weight data of the cylinder, and through direct connection of the weighing instrument and the weighing sensor, it includes an electronic scale, a filling bottle, and a cutting device connected to the filling bottle. The electronic scale includes a display screen, a base, a connecting rod, an electronic floor scale, and a weighing instrument. The filling bottle is placed on the base, and the cutting device is connected to a solenoid valve that controls the switch of the cutting device. The electronic floor scale receives the pressure and transmits the electrical signal to the weighing instrument. The weighing instrument controls the numerical changes on the display screen and the switch of the solenoid valve. When the pressure received by the electronic floor scale reaches the specified amount, the electronic floor scale transmits the electrical signal to the weighing instrument, and the weighing instrument controls the solenoid valve to close. 

The liquid chlorine quantitative filling and regulating shut-off device uses a shut-off valve connected to the liquid chlorine transportation pipeline. The shut-off valve consists of a valve body and a valve core set inside the valve body. The valve core is connected to the film in the membrane cover assembly through a valve stem. Above the film and between the film and the inner side of the membrane cover assembly, there is a spring. The lower part of the membrane cover assembly is equipped with an air vent. The air inlet is connected in series with the two-position three-way electromagnetic valve and the three-position five-way electromagnetic valve. The two-position three-way electromagnetic valve includes an exhaust port, an air inlet, and an exhaust port, which can perform multi-stage regulation and shut-off for the quantitative filling of liquid chlorine. Without increasing the leakage points, it can achieve multi-end regulation and shut-off, reducing the damage to the pipeline caused by overpressure, and can realize a single-acting seat valve (non-ball valve, double-acting valve), electromagnetic valve, pipeline, etc., under the current weighing instrument control mode. The filling value is set and then clicked to start. The weighing instrument controls the electromagnetic valve to open, and the electromagnetic valve supplies gas to the single-acting seat valve. The valve opens and the pipeline is connected, and the filling medium liquid is filled. According to the weight signal, the cumulative weight is converted. When the quantitative control system is reached, the electromagnetic valve loses power and the power supply to the valve is cut off, and the valve is immediately shut off at the moment of gas leakage. 

The steel cylinder packaging is equipped with filling ports and a weighing electronic floor scale. Each filling port is connected to a chlorine gas pipeline and a vacuum pipeline. Both pipelines are fitted with pneumatic programmable control valves. Each filling port is equipped with a platform scale and a filling controller. The filling control valves use chlorine gas-specific corrugated pipe pneumatic valves, which are suitable for dangerous and demanding environments such as chlorine gas factories. The cylinder scale is equipped with a management computer and a dedicated cylinder filling management software. All cylinder information must be recorded in the management system to establish a complete cylinder archive data. During automatic filling, the cylinder information is retrieved, the cylinder data information is verified, and the filling data is recorded. The real-time filling data of the cylinder scale controller is transmitted to the computer via RS485 serial communication, enabling computer management of the filling data. It can also print filling data reports. The cylinders are managed informatively, with electronic tags attached. The cylinder information is stored in the electronic tags, equivalent to each cylinder having an electronic ID card. By scanning the cylinder information stored in the electronic tag with a wireless handheld scanner, it is transmitted to the management computer, and the cylinder filling management software archives the cylinder information. The system is equipped with an emergency stop and cut-off function for chlorine gas leakage protection. The filling ports are installed in accordance with the requirements of the "GB50493-2009 Design Code for Detection and Alarm of Flammable Gases and Toxic Gases in Petrochemical Plants". Chlorine gas alarms are installed at the filling ports. In case of leakage, the chlorine gas alarm sends an alarm signal to the PLC controller, which then issues a stop command for the liquid chlorine liquid pump operation and closes the liquid pump. At the same time, the alarm signal is transmitted via RS485 serial communication to the management computer, which then controls the filling controller to close the filling pneumatic valve. 

The automatic quantitative filling of gas cylinders is controlled by a weighing controller, a filling pneumatic valve, and a cylinder scale. During the automatic filling process, place the cylinder on the cylinder scale, connect the filling pipeline, manually input the cylinder number on the weighing controller, set the warning value, filling value, alarm value, and skin weight value, and then press the filling button to start the filling program. The filling valve opens and starts filling. When the filling reaches the filling value, the controller automatically closes the filling valve and stops the filling. The intelligent management of cylinders is achieved through the automatic Filling system management software on the computer, which registers the basic information of each cylinder, realizes functions such as cylinder query, information modification, filling inspection, data statistics management, summary printing, etc. Through the computer management software, overdue cylinders and faulty cylinders can be automatically screened, eliminating the possibility of faulty filling. Before filling, if the computer detects any problems with the cylinder, the filling function of the filling controller is prohibited from operation, thereby achieving the function of intelligent management of cylinders. The safety interlock function for chlorine gas leakage. At each filling port, a chlorine gas alarm is installed. If the leakage exceeds the alarm value, the alarm signal is transmitted to the PLC, which starts the sound and light alarm, stops the liquid chlorine submersible pump, simultaneously cuts off the filling pneumatic valve, and records the alarm signal.