A device for heating billets


F23D23 - Assemblies of two or more burners (gas burners with provision for a retention flame F23D0014260000; arrangement or mounting of burners F23C0005000000; for industrial furnaces F27)

 

(57) Abstract:

The inventive device includes a gas burner with a spherical surface and receiving holes, General pipelines for supplying gas, the gas distributor comprising equal parts with a spherical surface, which is made through channels to accommodate the shared pipeline and outlet openings, derived from the common piping diametrically opposed. The cone-shaped inner surface of the bowl-shaped plates connected with branch pipes are drawn in to the spherical surfaces of the parts and burners in the area of the exhaust hole and the receiving hole. The contacts of the mating parts on the principle of cone area provides greater mobility connections while maintaining reliable tightness. 4 Il.

The invention relates to a device for the surface treatment of the flame blanks and can be used in the manufacture of quartz blanks, premature for drawing optical fibers.

A device for heating the quartz glass preform for optical fibers in the form of a gas burner positioned below the quartz tube.

The drawback of the device in Nevis is violated device for heating billets American company Heathway, the selected prototype and containing n gas burners, total pipelines for supplying gas, the gas distributor, n razroznennyh pairs of nozzles and the elements of the connection of the tubes to the gas distributor and the gas burners. Adjusting the tilt of the branch pipes and gas burners that get generated as specified in thermal field, covering the workpiece.

The drawbacks of limited adjustment range of the width of thermal field and low manufacturability of the device. This is due to the following.

The elements of connection fittings with valve gas burners and contains the details of interacting with flat surfaces. In particular, the gas distributor made in the form of a long beam with continuous channels, has a flat contact face. Gas burners also have surfaces with planar faces. The presence of planar contact between the mating parts limits the number of degrees of freedom, allowing you to tilt only in one plane. In addition, to ensure reliable sealing of joints required careful adjustment of grinding the contacting surfaces, which complicates the manufacturing process and improving the manufacturability.

The aim is achieved in that the gas distributor consists of n identical components with a spherical surface, which is made through channels to accommodate the shared pipeline and outlet openings, derived from the common piping on diametrically opposite sides of the spherical surface; on the lateral surfaces of the gas burners, which also has a spherical shape, is diametrically opposed performed receiving apertures; the elements of connection of the tubes to the gas distributor and the gas burners are made in the form of a bowl-shaped plates connected to the ends of the respective nozzles, the internal conical surface of the plates are tightened to the spherical surfaces of the gas distributor and the gas burners in the area corresponding to the discharge and the receiving holes.

In Fig.1 shows a device for heating the workpiece; Fig.2 section a-a in Fig. 1; Fig.3 dispenser gases with a total pipeline of Fig.4 cross-section B-B in Fig.3.

A device for heating the workpiece contains a gas burner 1 (Fig.1 shows a 4 burner), General piping 2, the distributor of gases, consisting of separate parts 3 with spherical surfaces, a pair rastlin is l, performed end-to-end channels 6 for piping 2.

On the side spherical surfaces of the parts 3 are made through holes 7 in contact with the hole 8 made in the piping 2, at this location contact details 3 pipes 2 in the area of the contact holes 7, 8 are connected by welding. The lateral surface of the gas burners 1 are also spherical in shape and are diametrically opposed withdrawn receiving apertures 9. 5 elements made in the form of bowl-shaped plates with conical surfaces 10 in contact with the spherical surfaces of the parts 3 in the area of the outlet 7 and with a spherical surface burners 1 in the area of the receiving hole 9. Cup-shaped pads 5 (elements) are connected with the pipes 4 and preload them to detail 3 burners and 1 by using clamp bars 11, tightened the screws 12. To prevent slippage of the plates with 5 zones of the discharge and the receiving holes of the pads 5 provided with a pin 13 inserted in the corresponding holes.

Setting the width of thermal field in the heating zone by the appropriate orientation of the gas burners 1 relative to the nozzle 4 and the inclination of the nozzles 4 relative to the long length of pipe increases from the center to the periphery. However, due to implementation of mobile connections on the principle of the cone-sphere provides more space for maneuver that extends the tuning range. Part 3 of which is formed a gas distributor installed in the plane, a portion of a spherical surface, not involved in providing contact with the Cup-shaped plates 5, truncated. Gases coming through common pipelines 2, through holes 7, 8 are received in the cavity of the Cup-shaped plates 5 and further through the pipe 4 to the receiving holes 9 burners 1, where they are mixed and ignited. When the Cup-shaped contact plates 5 with the spherical surfaces of the parts 3 burners and 1 reliable sealing contact areas on the principle of the cone-sphere can be achieved much easier than in planar contact. In turn, this makes the device easier to manufacture, because for devices with flammable gases most responsible are the nodes, ensuring tightness.

A DEVICE FOR HEATING BILLETS containing n gas burners, total pipelines for supplying gas, the gas distributor, n razroznennyh pairs of nozzles and the elements of the connection of the tubes to the gas distributor and gas burners, is distinguished by the mi channels for placement of pipelines outlet holes, bred from the common piping on diametrically opposite sides of the spherical surfaces, a gas burner made with side spherical surfaces which are diametrically opposite performed receiving apertures, and connecting tubes to the gas distributor gas burners made in the form of bowl-shaped plates connected to the ends of the respective pipes, the internal contact surface of the plates are tightened to the spherical surfaces of the distributor in the places corresponding to the discharge and the receiving holes.

 

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