A dry backfire preventer
A dry tempering and preventer technology, applied in burners, gas fuel burners, combustion methods, etc., can solve problems such as large resistance, large airflow pressure loss, and poor thermal conductivity of flame retardants, and achieve resistance Small, good heat absorption effect
Inactive Publication Date: 2017-10-27
南通中兴多元复合钢管有限公司
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Problems solved by technology
Its main disadvantage is that it cannot prevent the air flow with high combustion pressure, and thus cannot effectively prevent the tempering. Therefore, this type of flashback preventer is rarely produced by manufacturers; and the dry tempering The principle of preventing utilization is to use the flame arrester to reduce the temperature of the reflowing flame below the ignition point, and at the same time use the check valve to close the gas source to stop the combustion. In the fire state, when the airflow passes through normally, the resistance is large, resulting in a large pressure loss of the airflow
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[0014] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0015] see figure 1 , figure 2 , image 3 , figure 1 It is a structural schematic diagram of the present invention; figure 2 is an isometric view of the fire arrester of the present invention; image 3 It is the front view of the flame arrester of the present invention.
[0016] Described a kind of dry backfire preventer, comprises front end cover 2, rear end cover 6, copper tube 4, fire arresting body 8, check valve 7, spring 9, and the two ends of described copper tube 4 are connected with front end cover respectively 2. The rear end cover 6 is connected by threads, and there are gaskets ...
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The invention relates to a dry flashback preventer, which comprises a front end cover, a rear end cover, a copper pipe, a fire arrester and a check valve. The two ends of the copper pipe are respectively connected with the front end cover and the rear end cover, and There are gaskets A and B respectively. The two ports of the flame arrester are respectively closed by the front end cover and the spring seat. The invention adopts a fire-resistant body made of a heat-resistant material with good thermal conductivity. The fire-resistant body has small resistance and better heat absorption capacity, and can extinguish the flame during tempering faster, which is safe and reliable.
Description
technical field [0001] The invention relates to the field of backfire preventers, in particular to a dry backfire preventer with small resistance during ventilation and fast cooling during backfire. Background technique [0002] There are two types of flashback arrestors (also known as flashback fuses) currently on the market, namely dry flashback arresters and water-sealed flashback arrestors. The working principles and structures of these two flashback preventers are different: when the water-sealed flashback preventer is in normal operation, acetylene enters from the air inlet at the bottom, opens the check valve at the top, and enters the welder from the air outlet through the filter. (cut) torch. When burning back occurs, the flame pours the tank from the gas outlet and pushes open the rubber membrane so that the combustion flame escapes into the air from the gas release port. On the other hand, the pressure of the combustion flame closes the check valve and cuts the g...
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IPC IPC(8): F23D14/82
Inventor 王丹
Owner 南通中兴多元复合钢管有限公司