Explosion proof integrated manual electric gate valve is a safety equipment used in flammable and explosive environments, commonly found in industries such as petroleum, chemical, gas, and power, for controlling fluid switches. The device standards mainly involve aspects such as structure, material selection, functional requirements, installation and use. The following are the standard points of the device:
1、 Structural requirements
Valve body design:
The valve body material should have good corrosion resistance, high temperature resistance, and good mechanical properties, usually using durable materials such as cast steel and stainless steel.
The design of valves should meet explosion-proof requirements, which means that the equipment casing must have explosion-proof function to prevent external explosions caused by internal sparks and heat sources.
Integrated manual electric control:
The integrated design of manual and electric power needs to ensure the convenience of operation, combining manual and electric control methods.
The electric part should have an automatic switch control system that supports remote and local operation. The manual part is a backup control method in case of emergency or electric system failure.
Sealing performance:
The sealing surface and sealing material of the gate valve must be able to effectively prevent fluid leakage, especially in high-pressure and high-temperature environments.
The sealing design should ensure reliable explosion-proof performance and avoid fluid leakage to the external environment, which may cause danger.
Valve casing:
The shell must undergo specialized explosion-proof treatment and comply with relevant explosion-proof certification standards, such as Exd Ⅱ CT6, to ensure that it will not cause danger in explosive gas environments.
2、 Material requirements
Material selection:
Key parts such as valve body, valve cover, and internal components should be made of corrosion-resistant, high-pressure resistant, and high-temperature resistant alloy steel, cast steel, stainless steel, and other materials.
The sealing ring, gasket, etc. of the valve should be made of high-quality rubber, polytetrafluoroethylene (PTFE) and other materials that are resistant to high temperature and corrosion.
Electrical components:
The motor and control components of the electric part need to have explosion-proof, moisture-proof, corrosion-resistant and other characteristics, and comply with international explosion-proof electrical equipment standards.
3、 Performance requirements
Flow control:
Gate valves should be able to stably and reliably control fluid flow, achieve rapid opening, closing, and regulating functions, and ensure the normal operation of pipeline systems.
Explosion proof performance:
The casing of the equipment needs to meet the corresponding explosion-proof requirements, ensuring that it will not cause explosions in the external environment under possible internal sparks or high temperature conditions.
Operational reliability:
Manual and electric operations should switch smoothly, and the electric control system should have automation functions such as automatic opening, closing, position feedback, etc.
4、 Installation and usage requirements
Installation location:
Explosion proof hand-operated gate valves should be installed in easily accessible and operable locations, and should be avoided from being installed in places with high vibration, high temperature, or humid environments.
Installation method:
The installation of valves should follow the flow direction of the pipeline fluid to ensure correct valve installation.
Adequate support structures should be provided to ensure stable installation of the equipment and prevent displacement or loosening during long-term use.
Regular inspection and maintenance:
Valves should be inspected regularly, especially the electrical components and sealing surfaces. The manual and electric parts need to be repeatedly tested to ensure that the switching between the two is normal.
At regular intervals, explosion-proof performance and electrical components should be checked to ensure that the equipment can operate stably for a long time.
5、 Common standards
Explosion proof certification: Complies with international explosion-proof standards such as IECEx, ATEX, etc.
Gas leakage test: Conduct gas leakage testing according to relevant standards to ensure that the equipment does not leak during operation.
Electrical protection level: The electrical components of the equipment must meet the requirements of IP protection level, usually IP65 or higher, to ensure dust and water resistance.
By complying with the above standards, it can be ensured that the explosion-proof integrated manual electric gate valve operates safely and reliably in hazardous environments.