Gravel flame arrestor manufacturers from china

The fire retardant layer structure of the flame arrester is gravel type, metal wire mesh type or corrugated type. Applicable to combustible gas pipelines, such as gasoline, kerosene, light diesel, benzene, toluene, crude oil and other oil storage or flare system, gas purification system, gas analysis system, coal mine gas emission system, heating furnace fuel gas pipeline network, can also be used in acetylene, oxygen, nitrogen, natural gas pipeline supplies. The valve can be used with the breathing valve, can also be used alone.

The flame passes through a small channel of the fire blocking element and cools down in the channel. When the flame is divided small enough to a certain extent, the heat removed through the channel is enough to reduce the temperature below the ignition point of the fuel, so that the flame is extinguished.Pipe explosion proof corrugated flame arrester Or explained by the wall effect, when the channel is narrow to a certain extent, the collision between free radicals and the pipe wall is dominant, the free radicals are greatly reduced, and the combustion reaction cannot continue. Therefore, under certain conditions (0.1 MPa,20 ℃), the channel size that can just extinguify the flame is defined as the "Maximum Experimental Safe Gap" (MESG). The channel size of the flame arrester is the key factor to determine the performance of the flame arrester, and different gases have different MESG values. Therefore, when selecting a flame arrester, its MESG value should be determined according to the composition of the combustible gas. In the specific selection, the gas is divided into several grades according to the MESG value. At present, two kinds of methods are often used internationally. The first is the classification of the National Electrical Association (NEC), which divides the gas into four grades (A,B,C,D) according to the MESG value of the gas; The other is the International Electrotechnical Association (IEC) method, which also classifies gases into four classes (IIC, IIB, IIA and I).

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String said sheepishly: "Six brother, tomorrow to go out to see a patient, you go to sleep, this work I can do." Xiao Six laughed: "On your heavy hands and feet, I am afraid that you will destroy the wound that I have cleaned up very hard and waste my night's hard work." You just change the water." Small six gestures are particularly light and slow, the acacia in his hands to rub out the foam, a little knead the man's hair, knead through, with a ladle scoop warm water, along the roots of the hair, carefully washed. After all the mud and blood had been washed away, he took a pair of scissors to look carefully and cut off the bad hair. After washing his hair, he turned his fingers in the hair, looked down and felt the tightness of the man's body, and Xiao six explained: "I'm looking to see if there is any injury on your head." It is unfortunate and fortunate that the torturers did not blow the man's head in order to spare him all the pain of torture. Xiao Liu did not dare to force, changed several pieces of cloth, only to dry the man's hair, afraid that the comb would pull his wound hurt, Xiao Liu spread five fingers as a big comb, slightly straightened the hair, let the string take a clean pillow, put his head back on the couch. The sky was already light, Xiao Six went out of the house, washed his face with cold water, and while eating breakfast, he told the pockmarked who was cooking medicine under the window: "You don't have to care about the things in the shop these days, you take good care of him, don't give him cake, stew some rotten minced meat soup, add some green dishes, and feed him." Oh, let it cool before you give it to him." After eating, Xiao Liu took up his medicine basket and went out to make a house call. Asako said to the man on the couch through the window, "My name is Hanako, Brother Six spent the night to save you, but he gave you all the medicine that saved his own life, you must strive to survive." In the afternoon, when Xiao Liu came back, he was tired and tired, and his eyes were fighting.