Anti corrosion measures for street lamp controllers can be taken from the following aspects:
Shell protection
Material selection
Use corrosion-resistant materials such as stainless steel, engineering plastics, etc. to make the shell. The stainless steel shell has good corrosion resistance and can resist the erosion of most chemical substances. Engineering plastics (such as ABS, PC, etc.) can enhance their corrosion resistance by adding anticorrosive agent, and the plastic shell also has the advantages of light weight and good insulation.
For some special environments, such as near the seaside or chemical plants, alloy materials with higher corrosion resistance can be used, which can effectively resist the corrosion of salt spray and chemical gases.
surface treatment
Surface treatment of the housing of the street lamp controller is also a common anti-corrosion method. For example, electroplating treatment on metal shells, such as galvanizing, chrome plating, etc. The galvanized layer can form a protective film on the surface of the shell to prevent direct contact between the metal and corrosive substances from the outside. The chrome plating layer not only provides good corrosion resistance, but also gives the shell a good appearance.
Spray painting is also an effective surface treatment method. The use of anti-corrosion paint can form a tough protective film on the surface of the shell, isolating air and moisture. Some high-quality anti-corrosion paints also have characteristics such as UV resistance and chemical resistance, which can maintain their protective effect in outdoor environments for a long time.
Internal circuit board protection
Moisture proof treatment
The circuit board inside the street lamp controller is the core component and is easily susceptible to corrosion. Adopting a moisture-proof design can effectively prevent the circuit board from being corroded. During the design and manufacturing process of circuit boards, moisture-proof paint can be used to coat the circuit boards. Moisture proof paint can form a protective film to prevent moisture and corrosive gases in the air from coming into contact with components and circuits on the circuit board.
Meanwhile, placing desiccants inside the controller is also a simple and effective moisture-proof method. Desiccant can absorb moisture inside the controller and keep the internal environment dry. Common desiccants include silica gel desiccants, which have strong moisture absorption ability and can be reused.
Isolate corrosive substances
When installing a streetlight controller, be careful to keep it away from sources that may produce corrosive substances. For example, avoid installing in places where there may be leaks of sewage or chemical liquids. If it is impossible to avoid approaching these areas, a sealed protective box can be used to install the controller inside, and the protective box should be well ventilated to prevent corrosive gases from accumulating inside the box.
Sealing and connection protection
Sealing design
Ensure good sealing performance of the street lamp controller to prevent corrosive substances from entering the interior through gaps. Seal the interface of the shell with sealing strips or sealant. The sealing strip should have good weather resistance and corrosion resistance, and be able to maintain the sealing effect under different temperature and humidity conditions. Sealing glue can fill small gaps and prevent the invasion of moisture and corrosive gases.
Sealing design is also required for the buttons, indicator lights, and other parts of the controller. Waterproof gaskets or sealants can be used for treatment to ensure that these areas do not become channels for corrosive substances to enter.
Connection protection
The connection parts of the street lamp controller, such as wire connectors, plugs and sockets, are prone to corrosion. Use waterproof and corrosion-resistant wiring terminals and plug sockets at the connection points. These connecting components are typically made of special materials and designed to effectively prevent erosion from moisture and chemicals.
In addition, after the connection is completed, sealant or insulating tape can be used to wrap the connection area to further enhance its anti-corrosion performance. For example, using electrical tape with good corrosion resistance to wrap wire joints in multiple layers can effectively isolate corrosive substances from the outside world.