The difference between nitrogen supply valve and n

2022-07-27
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Knowledge of pipe fittings: the difference between nitrogen supply valve and nitrogen discharge valve

knowledge of pipe fittings: the difference between nitrogen supply valve and nitrogen discharge valve nitrogen sealing device consists of control valve, actuator, pressure spring, commander, pulse type nitrogen sealing valve (structural drawing) flushing pipe and other components. It is mainly used to keep the pressure of the protective gas (generally nitrogen) at the top of the container constant, so as to avoid direct contact between the materials in the container and the air, prevent the materials from volatilizing and being oxidized, and effectively prolong the service life of the furnace body, as well as the safety of the container. It is especially suitable for gas seal protection of various large storage tanks, including food and beverage systems. The product has the characteristics of energy saving, sensitive action, reliable operation and convenient operation and maintenance. Widely used in petroleum, chemical and other industries. The nitrogen supply device introduces the medium at the pressure tapping point on the tank top into the detection mechanism through the pressure pipe, and the medium generates a force on the detection element to balance with the spring and pre tightening force. When the pressure in the tank drops below the pressure set point of the nitrogen supply device, the balance is broken, so that the valve core of the commander is opened, so that the gas in front of the valve enters the upper and lower membrane chambers of the main valve actuator through the pressure reducing valve and throttle valve, and the opening is applicable to the nominal diameter of 100mm (4) 000mm, and the pressure grade is 0.1MPa (2) 5MPa, the ring stiffness grade is 1250n/m ⑴ 0000n/m, the main valve core of frpm pipe for underground and surface water supply and drainage water conservancy, farmland irrigation and other pipeline works, and nitrogen is filled into the tank; When the pressure in the tank rises to the pressure set point of the nitrogen supply device, close the valve core of the commander due to the preset spring force, close the main valve due to the action of the spring in the main valve actuator, and stop nitrogen supply. The nitrogen release device thus affects the safety and durability of all structures. The device adopts an internal feedback structure. The medium directly enters the detection mechanism through the valve cover. The medium generates a force on the detection element to balance with the preset spring preload. When the pressure in the tank rises to higher than the pressure set point of the nitrogen relief device, the balance is damaged, causing the valve core to move up, opening the valve, and discharging nitrogen to the outside; When the pressure in the tank drops to the pressure set point of the nitrogen relief device, the valve will be closed due to the preset spring force

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