Flame cutting energy conservation device and operation method thereof

Abstract

The invention relates to a flame cutting energy conservation device and an operation method thereof. The device is characterized in that a gas line (8) is connected with a safety explosion-release valve (10), the other end of the safety explosion-release valve (10) is connected with a fuel gas delivery device (5) which is connected with an electric contact pressure controller (11), a electronic control ball valve signal wire (12), an electric contact pressure control signal wire (13) and a pulse electronic fire signal wire (18) are respectively with an energy conservation control device (6); the energy conservation control device is centrally controlled by a PLC programmable controller. The operation method comprises the following steps: 1) starting cutting; 2) stopping cutting; 3) stopping operating when pressure of the fuel gas delivery device (5) rises to the preset value and retaining the pressure; 4) cutting once again and transmitting electric signals to the energy conservation control device (6); 5) when the pipeline backfires, using the safety explosion-release valve (10) arranged on the fuel gas delivery device (5) and a gas supply line to release explosion.

Description

technical field [0001] The invention belongs to the technical field of metallurgical production and machinery manufacturing, and in particular relates to a flame cutting energy-saving device and method. Background technique [0002] In the fields of machinery manufacturing and iron and steel metallurgy, various gases and oxygen are used to cut steel plates and billets. During the non-cutting waiting time, the cutting oxygen is in a gas-stop state. Because it is difficult and troublesome to re-ignite, the gas is often still burning continuously. state, wasting a lot of energy. Chinese patent document (Application No. 200910302855.9) discloses a method and device for oxyhydrogen flame cut-off cutting by adding auxiliary gas (propane, natural gas, coke oven gas, acetylene, or other petroleum liquefied gas) to oxyhydrogen and oxygen. After the oxygen supply is stopped, the auxiliary gas continues to burn to ensure that the flame is always bright, so that it can be ignited again...

AI Technical Summary

Problems solved by technology

Due to the accurate fixing of the counterweight, the problems of inaccurate pressure adjustment, frequent adjustment of the explosion relief valve, easy failure and complicated maintenance are solved when the spring preload is used as the pressing force, which is safer and more effective.

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