The flame retardant breathing valve should be maintained and serviced once a month, twice a month in winter. The method: first gently open the valve cover, remove the vacuum valve disc and pressure valve disc, and check whether there is oil or dirt on the valve disc. the valve and valve disc seal, valve disc guide rod and guide rod sleeve in case of oil. and dirt appear, the objects should be cleaned, then returned to their original position, pull up and down several times, and check whether the opening is flexible and reliable. If everything is normal, cover the valve cover and tighten it. During maintenance and service, if the valve disc has scratches, wear and other abnormal phenomena, it should be replaced immediately or contact our company so that the problem can be solved in time.
Scope of applicationthe explosion-proof and flame-retardant breathing valve
The flame-retardant breathing valve plays the role of blocking and draining steam in the steam heating system. The appropriate breathing valve can make the steam heating equipment achieve maximum efficiency. In order to achieve the best results, it is necessary to have a comprehensive understanding of the working performance and characteristics of different types of breathing valves.
There are many varieties of breathing valves, each with different performances. When selecting a breathing valve, you should first select a breathing valve whose characteristics can meet the optimal operation of steam heating equipment, and then consider other objective conditions. In this way, the choice of the breathing valve you need is correct and efficient. The respiratory valvemust be able to “identify” steam and condensate in order to prevent steam and drain water. The “identification” of steam and condensate is based on three principles: density difference, temperature difference and phase change. The structure of the GTQ type snorkel is simple. There is only one moving part inside, a finely ground stainless steel hollow float, which is both a float and an opening and closing part. It has no wearing parts and has a long service life.
When the equipment just starts to work, the air in the corrugated pipe of the flame arrester is exhausted through the Y series automatic air exhaust device, the low temperature condensate enters the breathing valve, the condensate level increases, the float rises and the valve opens. , the condensed water is discharged quickly, the steam enters the equipment quickly, the equipment heats up quickly, the liquidThe temperature detection sensor of the Y series automatic air exhaust device expands and the automatic air exhaust device closes. The breathing valve begins to operate normally and the float rises and falls with the condensate level, blocking the steam and discharging the water. When the device is just started, the air and low temperature condensation water in the flame arrester pipe of the GZW-I deflagration pipeline enter the breathing valve through the launching tube. The bimetallic drain component in the valve opens the ball barrel, the valve opens. , and the low temperature air and condensation water are quickly discharged. When steam enters the body of the ball, it generates upward buoyancy. At the same time, the temperature inside the valve rises, the bimetallic drain element shrinks, the ball floats toward the valve port, and the valve closes. When the steam in theball barrel turns into condensation water, the ball barrel loses buoyancy and sinks, the valve opens and the condensation water is quickly discharged. When steam re-enters the ball barrel, the valve closes, operating intermittently and continuously.
When the device is just started, the low temperature air and condensate in the manhole pipe of the tank wall enters the siphon, the inverted bucket falls under its own weight and the inverted bucket connection lever drives the valve core to open the valve, and the air and low temperature condensed water flow out quickly. When the steam enters the inverted bucket, the steam in the inverted bucket generates upward buoyancy, and the connection lever of the inverted bucket rises to drive the valve core to close the valve. There is a small hole in the inverted bucket. When part of the steam is released from the small hole, another part ofthe steam generates condensation water and the inverted bucket loses its capacity. It removes buoyancy and sinks under its own weight. The lever connected to the inverted bucket drives the valve core to open the valve. It works on a cycle and drains water intermittently. The air foam generator has two insulated valve chambers. The upper and lower valve chambers are connected by two stainless steel pipes. It is a combination of a float type breathing valve and an inverted bucket type breathing valve. operate under overheating, high pressure and low load. Under certain working conditions, the condensed water formed when the superheated steam disappears can be discharged in time, effectively preventing the leakage of superheated steam, and the work quality is high. The maximum temperature allowed is 600°C. The valve body is made entirely of stainless steel and the valve seat is made of steeltough ally. It has a long lifespan. This is a special breathing valve for superheated steam. national patents and filled a national gap.
When the condensate enters the lower cavity of the valve, the float ball of the auxiliary valve rises with the liquid level, and the float closes the steam inlet pipe hole. The condensate water rises to the main valve cavity through the water inlet pipe, and the inverted bucket falls under its own weight, causing the valve core to open the main valve and discharge condensate water. When the condensate level in the auxiliary valve chamber drops, the float drops with the liquid level and the auxiliary valve opens. Steam enters the inverted bucket in the upper cavity of the main valve from the steam inlet pipe. The inverted bucket generates upward buoyancy and the inverted bucket drives the valve core pto close the main valve. When the condensate level in the auxiliary valve cavity rises, the next cycle begins again with intermittent draining.
The explosion-proof and flame-retardant breathing valve is suitable for storing Class A petroleum products with an internal point below 28°C and Class B petroleum products with an internal point below 28°C. flash. below 60°C, such as gasoline and benzene, toluene, kerosene, light diesel, motor oil, crude oil and other petroleum products and chemical storage tanks with the same properties. It works normally in -35℃ temperature environment. -60℃.