SU564824A3 - Tubular burner - Google Patents

Description

(54) TUBULAR BURNER

The invention relates to a technique for the combustion of gaseous and liquid fuels and can be used in radiant heating elements of industrial furnaces.

Tubular burners are known, comprising a housing with fuel and air inlets and exhaust combustion products, and a burned tunnel reinforced along the housing axis using centering ribs made of ceramic ring segments articulated with one other protrusion-cavity connection and having openings for the exit of combustion products from burner tunnel in the space between it and the body.

The disadvantages of these burners are the unevenness of the temperature field in the housing due to poorly organized movement of combustion products in it, the possibility of gaps forming, and waiting for segments due to thermal deformations, resulting in uneven heating and burnout of the housing.

The aim of the invention is to eliminate these drawbacks by organizing a vortex flow of combustion products between the tunnel and the casing and fixing the segments, achieving heating uniformity and improving the operational reliability of the burner.

This is achieved in the proposed burner by the fact that the ogaersg in the tunnel are filled in the form of profiled channels having axial and tangential components: relative to the tunnel axis, and located mainly in the. the segments of the segments, the centering ribs are located downstream of the outlet sections of the channels along the course of the flow and have grooves for the passage of combustion products, the segments of adjacent rings are offset around the circumference and length of the tunnel and are provided with locking studs, and the junction of the segments in the ledge-groove joint have a rounded shape.

FIG. 1 shows the proposed burner, a longitudinal section (section A-A of FIG. 2); nafig2 - section bb FIG. one; in fig. 3 - section BB, FIG. one; in fig. 4 - scan the inner surface of the tunnel burner; in fig. 5 shows an embodiment of segments with rounded grooves and depressions.

The burner contains a housing 2 installed in the wall 1 of the furnace with nozzles 3-5 for supplying fuel, air and exhausting combustion products, nozzles 6,

burner tunnel 7, reinforced along the main hull, of ceramic ring segments, 8, centrifugal tunnel 7 in hull 2 with ribs 9 and 10, and forming between the hull 2 and the tunnel l 7 ring proshanstvo 11, combined with prn using projections 12 and 13 and 1.4 and 15 both in axial and circumferential directions. The segments 8 form, at mutual articulation, the channels 16, which create both axial and tangential components with respect to the tunnel 7. 9 and 10 are located beyond the exit sections of the many channels 16 along the flow path and have notches 17 for the passage of swirling combustion products. In order to ensure greater uniformity of flow and strength of the tunnel, the joints of segments 8 can be displaced around the circumference and then the length of tunnel 7, for example, using y1 (orbital segments 18 (Fig. 4).

To prevent gaps between the segments at their joints, segments 8 are equipped with fixed ceramic teeth 19. Segments 8 at connecting points of the protrusion may have a rounded shape (FIG. 5), and the cross section of the channels 16 may be variable across the length of the tunnel and create the tangential axis is predominantly axial component relative to the main tunnel.

The supply of fuel and air through the nozzles 3 and 4 is displaced at the exit from the force 1 kib and burned in the torch 20 along the axis of the tunnel. Formed products of combustion, the passage through the channels 16 into the annular space 11 between the housing 2 and the tunnel 7, both tangential and axial, formed the leading speed of the flow in one direction along the flow line, and passed through the grooves 17 in the ribs 9 and 10 segment cm 8, they uniformly heat the walls of the casing 2, and then remove the burner from the burner through pipe 5. In order to ensure even distribution of the combustion products through the channels 16, the fuel and air can be twisted.

Claims (6)

1. A burner tube containing a housing with fuel and air supply and discharge of combustion products and a Kepavffl4ecKHX burner tunnel reinforced along the hull axis of the Kepavffl4ecKHX annular segments articulated with one another junction hole and having openings for the exit of the combustion products from the burner tunnel into the space between 10 and the case. .. with 4Tq, in order to achieve the efficiency of heating and heating, the holes are made in the form of profiled channels with axial and tangential components relative to the axis of the tunnel. 2. Burner according to claim 1, characterized in that the channels are provided at the junction points of the segments. 3. Burner on PP. 1 and 2, characterized in that the centering ribs are located downstream of the outlet sections of the channels and have grooves for the passage of combustion products. 4. Burner on PP. 1-3, characterized in that the joints of the segments of adjacent rings are offset along the circumference and the length of the tunnel. 5.Gorelcapopp. 1-4, characterized in that the segments are provided with retaining straps at the junction points. 6. Burner on PP. 1-5, characterized in that in the connection the protrusion-cavity the articulated segments of the segments have a rounded shape. / 6 7ff J7 76 Rig. 2/7 / Rig.Z 1v 77 Vus. five