Steel-lined plastic storage tanks typically require overvoltage protection equipment to ensure operational safety and prevent unexpected overvoltage conditions. The primary goal of overvoltage protection equipment is to minimize or prevent cracking or damage to the system when it exceeds the design pressure limits.

The following are some common overvoltage protection devices:

Pressure Relief Valve: A common overvoltage protection device, the pressure relief valve activates when the internal pressure of machinery reaches a predetermined level, releasing a portion of gas or liquid to reduce the internal pressure of the equipment. This helps prevent overpressure in machinery.

2. Vacuum Valve: In certain situations, steel-lined plastic storage tanks are susceptible to negative pressure or vacuum pump effects. In such cases, it is necessary to install a vacuum valve to prevent the vacuum pump within the machinery from causing collapse or damage.

3. Blasting Plates: Blasting plates are an emergency overvoltage protection device, designed to split under certain pressure to relieve stress and prevent further risks to machinery and equipment.

4. Water Level Controller: The water level controller can detect the liquid level within the system and initiate corresponding actions to lower the level gauge, preventing overvoltage caused by the rise of the level gauge.

The selection and design of overvoltage protection equipment must comply with applicable requirements and standards, such as those of ASME. The actual installation and configuration of this device should be adjusted based on the capacity of steel-lined plastic tanks, process conditions, and application standards to ensure stable protection of equipment and personnel safety in emergency situations.

In summary, the assembly of overvoltage protection equipment is crucial for the safety of steel-lined plastic storage tanks, and it should be given due attention and implementation during the design and installation of the storage tanks.