SU424893A1 - BLIND RADIATION TROUBETS • • -r.vrs gufvarpTngVJii ^ Oovm--.! : JlJ - Google Patents

Description

one

The invention relates to blunt radiation tubes used in special atmospheres for the chemical and thermal treatment of metal.

Radiation tubes are known, consisting of coaxially arranged tubes that form Channels for gas stripping and air supply iB combustion chamber, as well as a nozzle.

The aim of the invention is to ensure reliable operation of the pipe in wide ranges of temperatures. For this, between the outer pipe and the viutreine of the gas-supplying coarse body, additional coaxially arranged pipe-screens, forming cavities — a prechamber with an inlet gas-supplying pipe with a nozzle, the cooling channel forzamers and. a gas supply pipe with a cooling air discharge pipe to the smoke exhaust path and its own channel for supplying air for combustion and cooling, and the gas extraction pipe is made movable relative to the optical chamber.

The drawing shows the proposed pipe, a longitudinal section.

OIA SOSTO.IT from the outer radiating pipe I, tubes-screens 2-5 are coaxially inserted into the boil-over, forming the prechamber 6 and the channels, respectively, for supplying the pelvis with air, supplying air for combustion and cooling,

cooling air exhaust and product exhaust | In combustion. The gas supply pipe 5 is made movable relative to the axis of the prechamber 6 and is equipped with gas soy 11. The movable connection of the gas supply pipe 5 with the pipe 4 is made in the form of a sealHHiKOBoro seal 12.

To distribute the air flow through the air inlet

13 and channel 8, the pipes .2 and 4 in the area of the pre-chamber are made perforated. For removal of combustion products, the channel 10 is provided with a pipe 14. The channel 9 is connected to the chimney 15 by means of a pipe 16 and a regulating valve 17.

Radiation dead-end pipe works as follows. The channel 8 through the pipe 13 is supplied with air in an amount necessary for burning and cooling the pre-chamber 6. Part of the air, depending on the installation of the control valve 17, is discharged through the channel 9, and the pipe 16 IB flue 15 or is used for other purposes.

The air required for combustion through the opening in the pipe 4 is directed to the prechamber 6. where the air and gas flow occurs. and through the hole in the tube 2 n

the channel of removal of combustion products 10, where they are afterburning. The flue gases from the duct 10 through the nozzle 14 are discharged into the chimney 15.

Since the gas supply pipe 5 is movable, the length of the prechamber 6 varies throughout, thus controlling the combustion process and, therefore, the temperature of the outer radiating pipe 1. The temperature of the walls of the forec measure 6 is controlled by the flow of air to cool it through channel 9 .

The proposed pipe can be used both for high temperature and low temperature furnaces.

Subject invention

A Tuneko radiation tube consisting of coaxially arranged tubes forming channels for the supply of gas and air, as well as a nozzle, characterized in that, in order to ensure overtime, trouble-free operation of the radiation tube in wide temperature ranges, between the outer tube and 1 internal (gas pipe of pipe1 1 pipe) additional coaxially arranged pipe screens are built in, forming cavities — a prechamber with a gas supply pipe and nozzle embedded in it, a cooling channel for the prechamber and a gas supply pipe with a coolant outlet This includes air, into the smoke exhaust tract, and the actual channel for supplying air for combustion and cooling, and the gas exhaust pipe is adapted to be displaced about the axis of the prechamber.