Fuel gas type trolley furnace system

Abstract

The invention discloses a fuel gas type trolley furnace system which comprises a plurality of trolley furnaces, fuel gas transportation pipeline branches, first high-speed switch valves arranged on the fuel gas transportation pipeline branches, a fuel gas transportation main pipeline and a first self-supporting regulating valve arranged on the fuel gas transportation main pipeline, second high-speed switch valves arranged on a valve-front fuel gas transportation main pipeline of the first self-supporting regulating valve, a relay, a control switch and a change-over switch, wherein the relay is connected among the second high-speed switch valve and the first high-speed switch valves of all the fuel gas transportation pipeline branches and used for receiving starting signals of all the first high-speed switch valves to automatically control the second high-speed switch valves; the control switch is connected onto the second high-speed switch valves through the relay so as to manually control the second high-speed valves; the change-over switch is used for realizing the switch between the automatic control and manual control of the second high-speed valves; According to the trolley furnace system, the irregular fuel gas diffusion can be effectively prevented and the trolley furnace is improved simultaneously to prevent the heat in the furnace from dissipating in the working process.

Description

technical field [0001] The invention belongs to the field of heat treatment of workpieces and materials, and particularly relates to a gas-fired trolley furnace system. Background technique [0002] The trolley furnace is a national standard energy-saving periodic operation furnace. It is mainly used for high-chromium, high-manganese steel castings, gray iron castings, ductile iron castings, rolls, steel balls, crusher hammers, wear-resistant linings quenching, Annealing, aging and heat treatment of various mechanical parts. There are many types of trolley furnaces, such as full-fiber trolley furnaces, double-ended trolley resistance furnaces, overturned trolley furnaces, gas-fired trolley furnaces, and trolley-type tempering furnaces. Whether it is the main pipeline for outputting gas from the natural gas transmission station, or the branch pipelines for gas transmission connecting each trolley furnace, there are self-supporting control valves on them. The function of the ...

AI Technical Summary

Problems solved by technology

When the trolley furnace is not in use, the gas pressure on the gas transmission pipeline is gradually higher than that of the trolley furnace during normal use, which not only causes the risk of rupture of the gas transmission pipeline, but also causes damage to the self-supporting regulating valve. damage

Furthermore, although in the prior art, there is a method of designing a safety valve so that the self-supporting regulating valve automatically opens and releases pressure when the pressure behind the valve rises to a certain value, but because the gas is transported in the pipeline, and the working environment is It is full of a large number of combustible particles, so releasing the gas from the safety valve is also a great safety hazard

What's more, when most trolley furnaces are working, the temperature inside the furnace is high and the heat is high, so the sealing between the furnace body and the trolley is extremely demanding to ensure that the heat will not be lost and avoid prolonged damage to the workpiece. The necessary heat treatment processing time cannot be well satisfied in the existing gas-fired trolley furnace

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