Hydraulic Coal Gas Release Valve
Introduction:
The hydraulic coal gas release valve is the most popular form in recent years. Hydraulic drive, no counterweight, light weight, reduce unbalanced external force on the pipeline, good pipeline force, safe and reliable, easy to install, self-locking, the sealing surface adopts soft and hard double seal, the hard seal adopts hard alloy, resistant to Wear and corrosion resistance, the soft seal adopts special silicone rubber, the sealing is good, the sealing ring can be replaced, the maintenance is convenient, the valve cover is provided with buffer, the switch is stable, and the sealing surface is not damaged.
Hydraulic drive type is divided into the following two types:
1. Hydraulic drive opening and closing spring-sealed type: the typical product is 5500 cubic blast furnace DN800 top relief valve, Driven by hydraulic cylinder, without counterweight, with disc spring chamber to provide sealing pressure, the connecting rod mechanism makes it difficult for the valve cover to pass the dead point when it is opened, and always maintains the elastic seal to ensure that it will not be easily released when the top pressure is increased. Punch away.
Working pressure: 0.3Mpa, working temperature: about ≤300℃; hydraulic cylinder working pressure 8-16Mpa
2. Hydraulic drive opening and closing, connecting rod mechanism sealed type: the typical product is DN800 blast furnace top relief valve.Driven by hydraulic cylinder, without counterweight, the valve cover is sealed and locked relying on the characteristics of the dead center of the linkage mechanism. When the bonnet is opened, it passes the dead point to ensure that it will not be easily flushed under the condition of release under the condition of rising top pressure.
Working pressure: 0.3Mpa, working temperature: about ≤300℃; hydraulic cylinder working pressure 8-16Mpa
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