There are many kinds of breathing valves, each with different performance. When choosing a breathing valve, you should first choose its characteristics to meet the best operation of steam heating equipment, and then consider other objective conditions, so that choosing the breathing valve you need is correct and effective. Breathing valve should be able to "identify" steam and condensed water, so as to play the role of blocking steam and draining water. "Identifying" steam and condensed water is based on three principles: density difference, temperature difference and phase change. GTQ snorkel has a simple structure, only a stainless steel hollow floating ball with finely ground moving parts, which is both a float and an opening and closing part, without wearing parts and with long service life.
When the equipment starts to work, the air in the corrugated flame arrester pipeline is exhausted through Y series automatic exhaust device, and the low-temperature condensate enters the breathing valve. The condensed water level rises, the float rises, the valve opens, the condensed water is discharged rapidly, the steam enters the equipment rapidly, the equipment heats up rapidly, the temperature-sensitive liquid of Y series automatic exhaust device expands, and the automatic exhaust device closes. The breathing valve starts to work normally, and the floating ball rises and falls with the condensate level, blocking steam and draining water. When the device was just started, the air and low-temperature condensate in GZW-I deflagration-resistant pipeline entered the breathing valve through the launch tube, and the bimetallic emptying element in the valve bounced off the ball cylinder, and the valve was opened, so that the air and low-temperature condensate were quickly discharged. When steam enters the ball cylinder, the ball cylinder generates upward buoyancy, and at the same time, the temperature in the valve rises, the bimetallic emptying element contracts, the ball clamp floats to the valve port, and the valve closes. When the steam in the ball barrel becomes condensed water, the ball barrel loses its buoyancy and sinks, the valve opens and the condensed water is quickly discharged. When the steam enters the ball barrel again, the valve closes again and works continuously intermittently.
When the device is just started, the air and low-temperature condensate in the manhole pipe of the tank wall enter the trap, and the inverted bucket falls by its own weight. The connecting rod of the bucket drives the valve core to open the valve, and the air and low-temperature condensed water are quickly discharged. When the steam enters the bucket, the steam of the bucket generates upward buoyancy, and the bucket rises to connect the lever to drive the valve core to close the valve. There is a small hole in the inverted bucket. When a part of steam is discharged from the small hole, another part of steam produces condensed water, and the inverted bucket loses buoyancy and sinks down by its own weight. The connecting lever of the inverted bucket drives the valve core to open the valve and work intermittently. The air foam generator has two isolated valve cavities, and the upper and lower valve cavities are connected by two stainless steel pipes. It is a combination of floating ball type and inverted bucket type breathing valve. The valve structure is advanced and reasonable. Under the working conditions of overheating, high pressure and small load, the condensed water formed when superheated steam disappears can be discharged in time, which effectively prevents the leakage of superheated steam and has high working quality. The maximum allowable temperature is 600℃, the valve body is made of all stainless steel, and the valve seat is made of hard alloy steel, with long service life. It is a special breathing valve for superheated steam, which has obtained two national patents and filled the domestic blank.
When condensed water enters the lower valve cavity, the floating ball of the auxiliary valve rises with the liquid level, and the floating ball closes the steam inlet pipe hole. The condensed water rises to the main valve cavity through the water inlet conduit, and the inverted bucket falls by its own weight to drive the valve core to open the main valve and discharge the condensed water. When the condensate level in the auxiliary valve cavity drops, the floating ball drops with the liquid level, and the auxiliary valve opens. Steam enters the inverted bucket in the upper main valve cavity from the steam inlet pipe, and the inverted bucket generates upward buoyancy to drive the valve core to close the main valve. When the condensate level in the auxiliary valve cavity rises again, the next cycle starts again and the drainage is interrupted.