The breathing valve separates the tank from the atmosphere
Jun 30, 2019| The breathing valve separates the tank from the atmosphere
The term breathing valve may be unfamiliar to most people, but it plays an important role in maintaining industrial safety. The breathing valve is composed of a pressure valve and a vacuum valve. It is installed on the top of the oil filling to maintain the balance of the air pressure inside and outside the oil tank, thus becoming an important industrial part for protecting the safety of the oil tank, especially in industrial oil.
Take the oil tank of the gas station that everyone is familiar with. Gasoline is a kind of volatile liquid. With the breathing valve, the tank can be cut off from the atmosphere to reduce the volatilization of gasoline and avoid the loss of gasoline. The effect is also greatly improved the safety performance.
It is also known that gasoline is extracted by a vacuum suction pump, and a breathing valve is installed to allow the oil tank to communicate with the outside atmosphere, thus preventing the formation of a vacuum. Due to the air leakage caused by the deformation of the valve disc or the valve seat of the breathing valve, the breathing valve has not been blocked by maintenance for a long time, and the freezing, jamming, bonding, etc. caused by the low temperature are common faults of the breathing valve. In the event of a malfunction of the breathing valve, it not only affects the loss of industrial materials, but also causes industrial losses. The most important thing is to affect the personal safety of the operators. Therefore, all industries must pay attention to the comprehensive inspection and maintenance of the breathing valves.
According to the standard, the breathing valve should be inspected twice a month in the winter, and once a month in the summer, check for leaks, normal operation, abnormal changes, etc.
The breathing valve, also known as the filter, is composed of a pressure valve and a vacuum valve. It is generally installed on the snorkel of the oil tank of the ship and can automatically start and close with the positive and negative pressure changes of the oil and gas in the tank of the ship. Without the manpower, the difference in atmospheric pressure inside and outside the oil tank is kept within the allowable range. The breathing valve saves manpower in maintaining the balance of the air pressure, and also prevents safety problems caused by human negligence. The breathing valve makes full use of the bearing capacity of the tank tank itself to reduce the medium discharge. When the medium is pulled out of the tank, the pressure inside the tank drops, and the atmospheric pressure outside the tank pushes the negative pressure valve open, so that gas enters from the outside, so that the pressure inside the tank does not fall any more, and the pressure is maintained once. balance.