Burning nozzle for natural gas terminal stationpressure relief

Abstract

The invention discloses a burning nozzle for natural gas terminal station pressure relief. The burning nozzle comprises a shell and a central tube. A mixing cavity is formed in one end of the central tube, the other end of the central tube stretches out of the shell and is connected with a gas inflow tube, and a heat accumulator is arranged in an annular portion between the central tube and the shell. The burning nozzle further comprises an internally-hollow connecting block and multiple air inflow tubes, the stretching section of the central tube is sleeved with the connecting block, the side wall of the connecting block is connected with the end face of the side, away from the mixing cavity, of the heat accumulator, and the air inflow tubes penetrate through the connecting block and then are communicated with the central tube. Natural gas in the gas inflow tube and burning-supporting gas in the air inflow tubes converge in the central tube and enter the mixing cavity along the central tube, the internal cross sectional area of the mixing cavity is larger than that of the central tube, mixed gas flowing at high speed starts to slow down in the mixing cavity, and meanwhile is fully mixed in large space in the mixing cavity and burnt through a gas outlet, and after air and the natural gas are mixed in advance, the burning efficiency at the gas outlet is improved.

Description

technical field [0001] The invention relates to a nozzle, in particular to a combustion nozzle for pressure relief in natural gas stations. Background technique [0002] In natural gas exploitation and transportation procedures, venting and pressure relief is the most effective measure to avoid overpressure accidents. In the prior art, when a gas well is vented and pressure relieved, part of the gas in the gas well is generally exported through a metal conduit, and the exported gas is decomposed by combustion to reduce the pressure in the well. However, during combustion, the temperature of the part of the combustion head is prone to be too high, resulting in a large amount of heat being transferred to the vicinity of the gas well through the metal conduit, causing a safety hazard; External mixing, this type of treatment can prevent the natural gas from burning along the inner wall of the metal conduit in the middle, thereby reducing the probability of the metal conduit exp...

AI Technical Summary

Problems solved by technology

However, during combustion, the local part of the combustion head is prone to overheating, resulting in a large amount of heat being transferred to the vicinity of the gas well through the metal conduit, causing safety hazards; External mixing, this type of treatment can prevent the natural gas from burning along the inner wall of the metal conduit in the middle, thereby reducing the probability of the metal conduit exploding, but it will lead to insufficient combustion of the natural gas at the end of the metal conduit, that is, part of the natural gas will escape. Near the combustion head, forming a serious safety hazard

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