Injection head structure of combustor

Abstract

The utility model provides an injector head structure of a burner, which comprises an annular cover, an injection cylinder is mounted in the annular cover, an inner cylinder is mounted on one side, far away from the annular cover, in the injection cylinder, a porous disc is mounted on one side, close to the annular cover, in the inner cylinder, and a connecting ring fixedly connected with the annular cover is sleeved at one end of the annular cover. A butt joint ring is arranged on one side of the connecting ring, fuel gas outlet pipes are evenly installed on the side, close to the ring cover, in the injection barrel, the ends, away from the injection barrel, of the fuel gas outlet pipes penetrate through the porous disc, a heat insulation disc is arranged on the side, away from the connecting ring, of the butt joint ring, and the injection barrel is sleeved with the heat insulation disc. The thermal insulation disc, the butt joint ring and the connecting ring are connected through a fastener formed by a plurality of screws and nuts, and the thermal insulation disc has the advantages that the influence of flames generated by the injector head on the paint surface of the surface of the injector head supporting carrier is reduced, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to a burner nozzle structure and belongs to the field of burners. Background Technology

[0002] The flame emitted by the nozzle reaches extremely high temperatures, causing a rapid rise in the ambient temperature around it during continuous operation. Since the nozzle is typically mounted on a specific support structure, these supports are often coated with paint for protection and aesthetics. However, the high temperatures generated by the flame can severely damage this paint. The high temperatures cause thermal decomposition and oxidation of the organic components in the paint, leading to discoloration, blistering, and peeling. This paint damage not only affects the appearance of the support structure but also reduces its protective performance, making it more susceptible to corrosion and wear, thus shortening its lifespan, increasing equipment maintenance costs, and in severe cases, even affecting the normal operation and safety of the entire equipment. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a burner nozzle structure to solve the problems mentioned in the background art. This utility model reduces the impact of the flame generated by the nozzle on the paint surface of the nozzle support carrier and extends its service life.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a burner injector head structure includes an annular cover, an injector cylinder installed inside the annular cover, one end of the injector cylinder extending to the outside of the annular cover, an inner cylinder installed on the side of the injector cylinder away from the annular cover, a perforated disc installed on the side of the inner cylinder near the annular cover, a connecting ring fitted onto one end of the annular cover and fixedly connected to the annular cover, a docking ring provided on one side of the connecting ring, the docking ring fitted onto the injector cylinder and fixedly connected to the injector cylinder, a gas inlet installed at the lower part of the outer surface of the annular cover, gas outlet pipes evenly installed on the side of the injector cylinder near the annular cover, the end of the gas outlet pipe away from the injector cylinder passing through the perforated disc, the space formed by the gas outlet pipe, the injector cylinder, the annular cover, and the docking ring communicating with each other, a heat insulation disc provided on the side of the docking ring away from the connecting ring, the heat insulation disc fitted onto the injector cylinder, and the heat insulation disc, docking ring, and connecting ring connected by fasteners formed by multiple screws and nuts.

[0005] Furthermore, the connecting ring has a plurality of first small holes evenly spaced on the side facing the docking ring, the docking ring has a plurality of second small holes evenly spaced on the side facing the connecting ring, which are aligned with the first small holes, and the heat insulation plate has a plurality of third small holes evenly spaced in a ring shape, which are aligned with the second small holes. One end of the screw passes through the channel formed by the first small holes, the second small holes and the third small holes and is then threaded to connect to the nut.

[0006] Furthermore, an external threaded sleeve is provided on the side of the first small hole away from the second small hole, which is concentrically arranged with the first small hole. One end of the external threaded sleeve is connected and fixed to the connecting ring. An internal threaded cap is threaded onto the external threaded sleeve, and the head of the screw is located in the space formed by the internal threaded cap and the external threaded sleeve.

[0007] Furthermore, a six-sided head is fixedly connected to the middle position of the closed end of the internal thread cap, and the six-sided head and the internal thread cap are integrally formed.

[0008] Furthermore, a hexagonal frame is provided on the side of the third small hole opposite to the second small hole. The hexagonal frame is connected and fixed to the heat insulation plate, and the nut is inserted into the hexagonal frame.

[0009] Furthermore, there is a gap between the end of the inner cylinder near the perforated disk and the inner wall of the spray cylinder, and multiple vent holes are evenly opened at the end of the inner cylinder away from the perforated disk.

[0010] Furthermore, multiple oxygen tubes are installed on one side of the perforated disk, and the end of the oxygen tube away from the perforated disk extends to the outside of the injection tube.

[0011] Furthermore, the side of the ring cover facing away from the docking ring has multiple fixing holes at equal intervals in a ring shape, and bolts for limiting the relative position of the ring cover and its carrier are inserted into the fixing holes.

[0012] The beneficial effects of this utility model are:

[0013] 1. After the screw passes through the connecting ring, mating ring, and heat insulation plate, tighten the nut. This allows the screw and nut to simultaneously restrict the relative positions of the spray cylinder, heat insulation plate, and ring cover, reducing the amount of fasteners used.

[0014] 2. Oxygen enters the inner cylinder through the oxygen pipe, and the gas enters the space formed by the ring and the injection cylinder through the gas interface. The gas then flows into the inner cylinder through multiple gas outlet pipes, where the oxygen and gas mix and ignite to form a jet-like flame. The high temperature generated by the flame is blocked by the heat insulation plate, thereby reducing the impact of the flame generated by the injection head on the paint surface of the injection head support carrier and extending its service life.

[0015] 3. After the screw is installed, the screw head is inside the external thread sleeve. The internal thread cap is then screwed onto the external thread sleeve, which hides the screw head and reduces the probability that the screw head will lose strength due to oxidation and corrosion and cannot be properly engaged with the internal hex wrench. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0017] Figure 1This is a schematic diagram of the injector head structure of a burner according to the present invention;

[0018] Figure 2 This is another perspective view of the injector head structure of a burner according to the present invention;

[0019] Figure 3 This is a cross-sectional view of the injector head structure of a burner according to the present invention;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is an assembly diagram of the injection cylinder, external threaded sleeve, and ring cover in the injection head structure of a burner according to this utility model;

[0022] In the diagram: 1-ring cover, 2-injection tube, 3-oxygen pipe, 4-gas outlet pipe, 5-gas interface, 6-six-sided head, 7-internal thread cap, 8-connecting ring, 9-butting ring, 10-insulation plate, 11-vent hole, 12-perforated plate, 13-nut, 14-six-sided frame, 15-inner cylinder, 16-external thread sleeve, 17-screw. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] Please see Figures 1-5This utility model provides a technical solution: a burner injector head structure, including a ring cover 1, an injector cylinder 2 installed inside the ring cover 1, one end of the injector cylinder 2 extending to the outside of the ring cover 1, an inner cylinder 15 installed on the side of the injector cylinder 2 away from the ring cover 1, a perforated disc 12 installed on the side of the inner cylinder 15 near the ring cover 1, a connecting ring 8 fitted onto one end of the ring cover 1 and fixedly connected to the ring cover 1, a docking ring 9 provided on one side of the connecting ring 8, the docking ring 9 fitted onto the injector cylinder 2 and fixedly connected to the injector cylinder 2, a gas interface 5 installed at the lower part of the outer surface of the ring cover 1, and gas outlet pipes 4 evenly installed on the side of the injector cylinder 2 near the ring cover 1, the end of the gas outlet pipe 4 away from the injector cylinder 2 passing through the perforated disc 12, the gas outlet pipe 4 communicating with the space formed by the injector cylinder 2, the ring cover 1, and the docking ring 9. There is a gap between the end of the inner cylinder 15 near the perforated disk 12 and the inner wall of the injection cylinder 2. Multiple ventilation holes 11 are evenly opened at the end of the inner cylinder 15 away from the perforated disk 12. Multiple oxygen pipes 3 are installed on one side of the perforated disk 12. The end of the oxygen pipes 3 away from the perforated disk 12 extends to the outside of the injection cylinder 2. Multiple fixing holes are opened in a ring at equal intervals on the side of the ring cover 1 away from the docking ring 9. Bolts for limiting the relative position of the ring cover 1 and its carrier are inserted in the fixing holes. The injection cylinder 2, the inner cylinder 15 and the ring cover 1 together form the injection head. Oxygen enters into the inner cylinder 15 through the oxygen pipes 3. After the gas enters into the space formed by the ring cover 1 and the injection cylinder 2 through the gas interface 5, the gas flows into the inner cylinder 15 through multiple gas outlet pipes 4. Thus, the oxygen and gas are mixed and ignited to form a jet-shaped flame.

[0025] See Figures 1-4 A heat insulation plate 10 is provided on the side of the docking ring 9 opposite to the connecting ring 8. The heat insulation plate 10 is sleeved on the spray cylinder 2. The heat insulation plate 10, docking ring 9, and connecting ring 8 are connected by fasteners formed by multiple screws 17 and nuts 13. The connecting ring 8 has multiple first small holes evenly distributed on the side facing the docking ring 9. The docking ring 9 has multiple second small holes evenly distributed on the side facing the connecting ring 8, which are aligned with the first small holes. The heat insulation plate 10 has multiple third small holes evenly distributed in a ring shape on one side, which are aligned with the second small holes. One end of the screw 17 passes through the channel formed by the first, second, and third small holes and is threaded to the nut 13. A hexagonal frame 14 is provided on the side of the third small hole away from the second small hole. The hexagonal frame 14 is connected and fixed to the heat insulation plate 10, so that the nut 13 is inserted into the hexagonal frame 14 to restrict the position of the nut 13. The screw 17 passes through the connecting ring 8, the mating ring 9 and the heat insulation plate 10 and is then screwed on the nut 13. The fastener formed by the screw 17 and the nut 13 simultaneously restricts the relative position of the spray cylinder 2, the heat insulation plate 10 and the ring cover 1, reducing the amount of fasteners used. The high temperature generated by the flame is blocked by the heat insulation plate 10, thereby reducing the impact of the flame generated by the spray head on the paint surface of the spray head support carrier and extending the service life.

[0026] See Figures 1-5A threaded sleeve 16 is provided on the side of the first small hole away from the second small hole, concentrically arranged with the first small hole. One end of the threaded sleeve 16 is connected and fixed to the connecting ring 8. An internal threaded cap 7 is threadedly connected to the threaded sleeve 16. A hexagonal head 6 is connected and fixed at the middle of the closed end of the internal threaded cap 7. The hexagonal head 6 and the internal threaded cap 7 are integrally formed. The wrench is locked on the hexagonal head 6, which makes it easy to turn the internal threaded cap 7 with the wrench. After the screw 17 is installed, the head of the screw 17 is inside the threaded sleeve 16. The internal threaded cap 7 is locked on the threaded sleeve 16, which hides the head of the screw 17 and reduces the probability that the head of the screw 17 will lose strength due to oxidation and corrosion and cannot be locked with the internal hexagonal wrench.

[0027] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A burner nozzle structure, comprising a ring cover (1), characterized in that: An injection cylinder (2) is installed inside the ring cover (1). One end of the injection cylinder (2) extends to the outside of the ring cover (1). An inner cylinder (15) is installed inside the injection cylinder (2) on the side away from the ring cover (1). A perforated disc (12) is installed inside the inner cylinder (15) on the side close to the ring cover (1). A connecting ring (8) is fitted onto one end of the ring cover (1) and fixed to the ring cover (1). A docking ring (9) is provided on one side of the connecting ring (8). The docking ring (9) is fitted onto the injection cylinder (2) and fixed to the injection cylinder (2). A gas interface (5) is installed at the lower part of the outer surface of the ring cover (1). The gas outlet pipe (4) is evenly installed on one side of the injection cylinder (2) near the ring cover (1). The end of the gas outlet pipe (4) away from the injection cylinder (2) passes through the perforated plate (12). The gas outlet pipe (4) communicates with the space formed by the injection cylinder (2), the ring cover (1), and the docking ring (9). The docking ring (9) is provided with a heat insulation plate (10) on the side away from the connecting ring (8). The heat insulation plate (10) is sleeved on the injection cylinder (2). The heat insulation plate (10), the docking ring (9), and the connecting ring (8) are connected by fasteners formed by multiple screws (17) and nuts (13).

2. The injector head structure of a burner according to claim 1, characterized in that: The connecting ring (8) has a plurality of first small holes evenly distributed on the side facing the docking ring (9), the docking ring (9) has a plurality of second small holes evenly distributed on the side facing the connecting ring (8) and aligned with the first small holes, the heat insulation plate (10) has a plurality of third small holes evenly distributed on one side in a ring shape and aligned with the second small holes, and the screw (17) is threaded to the nut (13) after passing through the channel formed by the first small hole, the second small hole and the third small hole.

3. The injector head structure of a burner according to claim 2, characterized in that: The first small hole is provided with an external threaded sleeve (16) arranged concentrically with the first small hole on the side opposite to the second small hole. One end of the external threaded sleeve (16) is connected and fixed to the connecting ring (8). An internal threaded cap (7) is threadedly connected to the external threaded sleeve (16). The head of the screw (17) is located in the space formed by the internal threaded cap (7) and the external threaded sleeve (16).

4. The injector head structure of a burner according to claim 3, characterized in that: The closed end of the internal thread cap (7) is connected and fixed with a six-sided head (6), and the six-sided head (6) and the internal thread cap (7) are integrally formed.

5. The injector head structure of a burner according to claim 2, characterized in that: The third small hole is provided with a six-sided frame (14) on the side opposite to the second small hole. The six-sided frame (14) is connected and fixed to the heat insulation plate (10). The nut (13) is inserted into the six-sided frame (14).

6. The injector head structure of a burner according to claim 1, characterized in that: There is a gap between the end of the inner cylinder (15) near the perforated disk (12) and the inner wall of the spray cylinder (2), and a plurality of ventilation holes (11) are evenly opened at the end of the inner cylinder (15) away from the perforated disk (12).

7. The injector head structure of a burner according to claim 1, characterized in that: Multiple oxygen tubes (3) are installed on one side of the porous disc (12), and the end of the oxygen tube (3) away from the porous disc (12) extends to the outside of the injection tube (2).

8. The injector head structure of a burner according to claim 1, characterized in that: The ring cover (1) has multiple fixing holes at equal intervals on the side facing away from the docking ring (9). Bolts for limiting the relative position of the ring cover (1) and its carrier are inserted in the fixing holes.

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