SU727944A1 - Y.a. kalatchev's burner for gas-flame treating of metal - Google Patents

Description

(54) KALACHEVA BURNER Y. A, FOR GAS FLAME, METAL TREATMENT. . It is equipped with an additional tube for the delivery of acetylene gas, mounted on the body of the burner and connected to the chamber. In the proposed burner, the ratio of the length of the diffusion chamber to its diameter is 2–2.5, the ratio of the diameter of the reaction chamber to the diameter of the central channel is 2.5–3.2, the ratio of the length of the central channel to its diameter is 13–15, and the ratio of the length of the outer channel tip to its diameter is 6-7. . FIG. 1 shows the burner of FIG. 2 - tip. The burner reactor consists of a housing with two valves 2 and 3 and a tip 4.. ; ; . The burner tip contains an additional combustible gas valve 5, junction 6, two gas supply pipes 7 and 8 for separate supply of propane and a mixture of propane and includes a special design, consisting of two mouthpieces - internal 9 and concentrically with it. outdoor 1o. In the assembly, the outlet of the inner tube is recessed relative to the outer one, as a result of which, at the outlet of the inner tube, a region of contractile expansion of the cross section - reaction channel 11 is created. The main design parameters determining the aerodynamics of the process are:. . 1) DyShetra reaction kayap to the diameter of the central channel 2.5-3.2; 2) the ratio of the length of the reaction channel to its diameter is 2-2.5; the ratio of the length of the central channel to its outlet orifice is 13–15}: 4) the ratio of the length of the outer channel to its inlet code. R 7 o-I, Gölk i -Factor's operation works as follows. From the burner body, when opening the 2 and 3, propane and oxygen, under pressure of 0.7-1.5 and 0.51, 2 kgf / cm, respectively, are mixed with the B injector (the injection gas being propane) and Pass the gas supply pipe to the tube 8 and the annular gap. formed by the walls of the outer and inner mouthpieces, enter the reaction and dion channel 11.. When igniting the Oxy-oxygen mixture of the composition, it is drawn into the {Reaction channel, forming a high-temperature, fast-burning ring flame. A portion of the heat in the reaction channel goes to heat the copper nozzles 10 and 9, providing preliminary indirect heating of the gases passing through them, and most of the heat is spent on increasing the enthalpy and pyrolysis of the propane stream leaving the reaction channel 11 through valve 12, tube 7 and the inner mouthpiece 9. The ring flame combustion reaction due to the small length of the reaction channel does not receive full development in it and ends at the exit from it, where the temperature reaches the maximum value. The acetylene formed in the reaction channel disintegrates into an element when it leaves it and burns, adding to the heat of the first stage combustion reaction; 58.6 kcal / mol heat of decomposition energy 54 kcal / mol .: in accordance with the invention 1. The burner for gas-flame Metal processing, predominantly using acetylene gas substitutes, comprising a housing with gas supply tubes and an outer mouthpiece with a channel in which an inner mouthpiece with a central opening is mounted, characterized in that m ensure formation of acetylene cans substitutes between the outer and inner mouthpiece at the working end of the burner, to the resulting reaction chamber, and the burner is provided with an additional tube for supplying substitute gas acetylene mounted on the torch body and connected to said chamber. - 2. Burner according to claim 1, that is, that the ratio of the length of the reaction chamber to its diameter is 2-2.5, the ratio of the diameter of the reaction chamber to the diameter of the central channel is 2.5-3 , 2, length ratio

5.7279446

the central channel to its diamsh-ru equal-; 1. U.S. Patent Ng 2741648,

but 13-15, and the ratio of the length of the channel. 260-679, 1956.

outer tip to its diameter2. Patent of Germany No. 12Q7368

equals 6-7.

Information sources.

taken into account during Examination ((prototype).

cl. 120 19/01, 1963. 5 3. USSR Copyright Certificate No. 493596, cl. F 23 T 13/34, 1974

5 n

Claims (2)

Claim 1. Burner for flame treatment of metal, mainly using replacement gases of acetylene, comprising a housing with gas supply 40 tubes and an outer mouthpiece with a channel in which an inner mouthpiece with a central hole is mounted, characterized in that, in order to increase the flame temperature ₄₅ by ensuring the formation of acetylene from substitute gases, between the outer and inner mouthpieces, at the working end of the burner, is formed the reaction chamber, and the burner is equipped with an additional tube for supplying an acetylene substitute gas mounted on the burner body and connected to the said chamber. '· 2. Burner according to π. 1, with the fact that the ratio of the length of the reaction chamber to its diameter is 2-2.5, the ratio of the diameter of the reaction chamber to the diameter. the central channel is 2.5-3.2, the ratio of the length of the central channel to its diameter is 13-15, and the ratio of the channel length of the outer tip to its diameter is 6-7.