Combustion chamber residual oil collection and reuse structure

Abstract

The application discloses a combustion chamber residual oil collecting and recycling structure, which comprises a recycling structure, an outer casing and a flame tube which are sequentially arranged and communicated along the vertical line of the combustion chamber; the recycling structure comprises a nozzle assembly, a nozzle pipeline assembly and an oil storage structure which are sequentially arranged and communicated; the nozzle assembly penetrates into the outer casing and extends into the flame tube; the oil storage structure is communicated with an oil leakage valve assembly on the outer casing at the end far from the nozzle pipeline assembly; the nozzle assembly comprises a nozzle head and a nozzle shell which are sequentially arranged and communicated along the vertical center line of the nozzle assembly; the nozzle shell is communicated with the nozzle pipeline assembly; the nozzle head is provided with a jet hole at the position extending into the flame tube. The residual oil deposited in the outer casing of the combustion chamber is sprayed into the flame tube through the nozzle pipeline assembly and the nozzle assembly, recycling is realized, energy is saved, and the environment is not polluted.

Description

Technical Field

[0001] This invention belongs to the field of combustion chambers in gas turbine engines, and specifically relates to a structure for collecting and reusing residual oil in a combustion chamber. Background Technology

[0002] When the gas turbine engine and auxiliary power unit fail to start, the aviation kerosene injected into the combustion chamber flame tube will flow through the cooling holes, main combustion holes and mixing holes on the flame tube under the action of gravity, and deposit in the outer casing of the combustion chamber, forming residual oil. If it is not drained in time, the residual oil deposited in the combustion chamber may cause deflagration when the engine is restarted next time, causing a safety hazard.

[0003] Currently, the method for handling residual oil in the outer casing of the combustion chamber involves installing an oil drain valve assembly directly below the combustion chamber, at the lowest point of the outer casing. Gas turbine engines typically connect an oil collection box to this valve assembly. When the collection box is full, the residual oil is directly discharged into the atmosphere through a pipeline. Auxiliary power units on gas turbine engines generally connect an oil transfer line to the valve assembly, transporting the residual oil to the aircraft before discharging it into the atmosphere. This method of discharging into the atmosphere is both energy-intensive and environmentally polluting. Furthermore, transporting the residual oil to the aircraft and then discharging it through its fuel lines increases the complexity of the aircraft's fuel supply system.

[0004] As gas turbine engines and auxiliary power units become increasingly stringent in terms of energy conservation and emission reduction, we need a combustion chamber residual oil collection and reuse structure that can be recycled and reused, saves energy, does not pollute the environment, and reduces the complexity of aircraft fuel pipelines and storage structures. Summary of the Invention

[0005] To address the aforementioned problems, this invention discloses a combustion chamber residual oil collection and reuse structure, comprising a recovery structure, an outer casing, and a flame tube arranged sequentially and connected along a vertical straight line in the combustion chamber;

[0006] The recovery structure includes a nozzle assembly, a nozzle pipeline assembly, and an oil storage structure arranged and connected in sequence. The nozzle assembly passes through the outer casing and extends into the flame tube. The end of the oil storage structure away from the nozzle pipeline assembly is connected to an oil leakage valve assembly on the outer casing.

[0007] The nozzle assembly includes a nozzle head arranged sequentially and connected along its own vertical center line, a nozzle housing connected to the outer casing, the nozzle housing being connected to the nozzle pipeline assembly, and the part of the nozzle head extending into the flame tube having an injection hole.

[0008] Furthermore, the nozzle housing includes a mounting portion, a connecting portion, and a transition portion that are sequentially arranged and connected along its own vertical center line, and the diameters of the mounting portion, the connecting portion, and the transition portion increase sequentially.

[0009] The transition section is provided with an oil outlet cavity that connects the through-connection section and the mounting section.

[0010] The transition section is provided with an oil inlet chamber that extends horizontally through itself. The oil inlet chamber is vertically connected to the oil outlet chamber. The transition section is provided with a nozzle pipeline assembly that communicates with the oil inlet chamber.

[0011] The mounting part is provided with a mounting groove that communicates with the oil outlet chamber, and a nozzle head is fixedly installed in the mounting groove;

[0012] The connecting part is connected to the outer casing.

[0013] Furthermore, the outer casing is provided with a nozzle mounting seat that communicates with itself, and the nozzle mounting seat is threadedly connected to the connecting part.

[0014] Furthermore, the nozzle pipeline assembly includes an oil outlet pipe joint and a delivery pipe connected in sequence. The end of the delivery pipe away from the oil outlet pipe joint is connected to the oil storage structure. The oil outlet pipe joint is fixedly installed on the transition part, and the oil inlet chamber is accommodated in the cavity of the oil outlet pipe joint.

[0015] Furthermore, the oil storage structure includes an oil collection box assembly and an oil collection pipe assembly arranged sequentially and connected to each other, with the oil collection box assembly located near the delivery pipe.

[0016] Furthermore, the oil collection pipe assembly includes a collection pipe and an oil inlet pipe connector connected in sequence. The oil inlet pipe connector is connected to an oil leakage valve assembly on the outer casing, and the collection pipe is connected to an oil collection box assembly.

[0017] Furthermore, an oil leak seat is connected to the outer casing, and an oil leak valve assembly is internally threaded to the oil leak seat. The oil inlet pipe connector is located at the part of the oil leak valve assembly that extends out of the oil leak seat.

[0018] Furthermore, the oil collection box assembly includes a box body, an inlet pipe communicating with a collection pipe is provided inside the box body, a direct injection short pipe communicating with a delivery pipe is provided inside the box body, and an oil collection groove is provided at the part of the box body below the inlet pipe and the direct injection short pipe, and the direct injection short pipe is housed in the oil collection groove.

[0019] Furthermore, the direct-fire short pipe includes a straight pipe, a bend, and an inclined pipe arranged in sequence. The straight pipe is connected to the delivery pipe, and the extended end of the inclined pipe is accommodated in the oil collection groove.

[0020] Furthermore, the nozzle head includes a spraying part and a fixing part arranged sequentially along its own vertical center line. The fixing part is disposed in the mounting groove. The spraying part is provided with a spraying chamber that penetrates the fixing part. The spraying chamber is connected to the oil outlet chamber. The part of the spraying part that extends into the flame tube is provided with a spraying hole.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1) This invention uses a nozzle pipeline assembly and a nozzle assembly to spray residual oil deposited in the combustion chamber of the outer unit into the flame tube, achieving recycling, saving energy, and without polluting the environment.

[0023] 2) This invention can collect and reuse residual oil without having to transport the residual oil from the auxiliary power unit to the aircraft for discharge. Instead, the residual oil can be transported to the flame tube for combustion and reuse. Therefore, the fuel pipeline between the auxiliary power unit and the aircraft can be eliminated, and only the pipeline from the outer casing to the flame tube can be added. This not only shortens the fuel pipeline and optimizes the aircraft's discharge structure, but also reduces the weight.

[0024] 3) The residual oil in the oil collection box of the present invention can be transported away in time, so there is no need for a large-capacity oil collection box. A light and small oil collection box can be used, which reduces the weight.

[0025] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure according to an embodiment of the present invention is shown;

[0028] Figure 2 It shows Figure 1 A magnified view of part A in the image;

[0029] Figure 3 It shows Figure 1 A magnified view of part B in the image;

[0030] Figure 4 It shows Figure 1 A magnified view of part C;

[0031] Figure 5 A schematic diagram showing the connection between the nozzle assembly, the nozzle piping assembly, and the oil collection box assembly is provided.

[0032] Figure 6 A schematic diagram of the nozzle assembly is shown.

[0033] Figure 7 A schematic diagram of the nozzle piping assembly is shown.

[0034] Figure 8 A schematic diagram of the oil collection box assembly is shown.

[0035] Figure Descriptions: 1. Oil Leakage Valve Assembly; 2. Oil Collection Pipe Assembly; 21. Oil Inlet Pipe Connector; 211. First Flat Gasket; 212. Second Flat Gasket; 22. Collection Pipe; 3. Oil Collection Box Assembly; 31. Box Body; 311. Oil Collection Groove; 32. Inlet Pipe; 33. Direct Injection Short Pipe; 331. Inclined Pipe; 332. Bend; 333. Straight Through Pipe; 4. Nozzle Pipeline Assembly; 41. Delivery Pipe; 42. Oil Outlet Pipe Connector; 421. Third Flat Gasket; 422. Fourth Flat Gasket; 5. Nozzle Housing; 51. Transition Section; 511. Fuse Hole; 512. Oil Inlet Chamber; 513. Oil Outlet Chamber; 52. Connecting Section; 53. Mounting Section; 531. Mounting Groove; 6. Nozzle Head; 61. Fixing Section; 62. Injection Section; 621. Injection Hole; 63. Injection Chamber; 7. Outer Casing; 71. Oil Leakage Seat; 72. Nozzle Mounting Seat; 8. Flame Tube; 81. Through Hole. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Figure 1 A schematic diagram of the structure according to an embodiment of the present invention is shown. Figure 1 As shown, a combustion chamber residual oil collection and reuse structure includes a recovery structure, an outer casing 7, and a flame tube 8 arranged and connected in sequence along a vertical straight line in the combustion chamber. The recovery structure includes a nozzle assembly, a nozzle pipeline assembly 4, and an oil storage structure arranged and connected in sequence. The nozzle assembly passes through the outer casing 7 and extends into the flame tube 8. The end of the oil storage structure away from the nozzle pipeline assembly 4 is connected to an oil leakage valve assembly 1 on the outer casing 7. The nozzle assembly includes a nozzle head 6 arranged and connected in sequence along its own vertical center line and a nozzle housing 5 connected to the outer casing 7. The nozzle housing 5 is connected to the nozzle pipeline assembly 4. The part of the nozzle head 6 extending into the flame tube 8 is provided with an injection hole 621.

[0038] The combustion chamber residual oil collection and reuse structure of the present invention stores residual oil in the outer casing 7 through an oil storage structure, and uses a siphon effect to sequentially draw the residual oil into the nozzle pipeline assembly 4 and the nozzle assembly, and then sprays it into the flame tube 8 through the injection hole 621 for atomization and combustion. Therefore, the present invention achieves recycling, saves energy, does not pollute the environment, optimizes the aircraft's exhaust structure, and reduces weight.

[0039] Specifically, the nozzle head 6 has at least one injection hole 621.

[0040] Specifically, the oil leakage valve component 1 is existing technology, so it will not be described in detail here.

[0041] Figure 4 It shows Figure 1 A magnified view of a portion of C. (e.g.) Figure 4 As shown, in some embodiments, the flame tube 8 is provided with a through hole 81, and the nozzle head 6 is disposed in the through hole 81; the nozzle head 6 passes through the through hole 81 into the flame tube 8, which facilitates installation.

[0042] Figure 6 A schematic diagram of the nozzle assembly is shown. Figure 6 As shown, in some embodiments, the nozzle housing 5 includes a mounting portion 53, a connecting portion 52, and a transition portion 51 arranged sequentially and connected along its own vertical centerline, with the diameters of the mounting portion 53, connecting portion 52, and transition portion 51 increasing sequentially; the transition portion 51 has an oil outlet chamber 513 that passes through the connecting portion 52 and the mounting portion 53; the transition portion 51 has an oil inlet chamber 512 that extends laterally through itself, the oil inlet chamber 512 being perpendicularly connected to the oil outlet chamber 513; and the transition portion 51 has a nozzle pipe that communicates with the oil inlet chamber 512. Component 4; The mounting part 53 is provided with a mounting groove 531 communicating with the oil outlet chamber 513, and the nozzle head 6 is fixedly installed in the mounting groove 531; The connecting part 52 is connected to the outer casing 7; The mounting part 53, the connecting part 52, and the transition part 51 are provided with the same oil outlet chamber 513, which is connected with the oil inlet chamber 512 to provide a channel for fuel delivery. Since the oil inlet chamber 512 and the oil outlet chamber 513 are vertically connected, the fuel can be sprayed out from the injection hole 621 by using the siphon effect; The mounting groove 531 can provide installation conditions for welding the nozzle head 6.

[0043] Specifically, the diameters of the mounting part 53, the connecting part 52, and the transition part 51 increase sequentially, which facilitates the connection of the nozzle housing 5 with different components. For example, the transition part 51 is connected to the nozzle pipeline assembly 4 to provide a fuel delivery channel, the connecting part 52 is connected to the outer casing 7 to ensure the stability of the nozzle housing 5 and increase reliability, and the mounting part 53 provides installation conditions for welding the nozzle head 6.

[0044] In some embodiments, the transition portion 51 is provided with a fuse hole 511 at the part away from the connecting portion 52, and the fuse hole 511 is located below the oil inlet chamber 512; the fuse hole 511 is used to pass a fuse to prevent the threads from loosening.

[0045] In some embodiments, the outer casing 7 is provided with a nozzle mounting seat 72 that communicates with itself, and the nozzle mounting seat 72 is threadedly connected to the connecting part 52; the nozzle mounting seat 72 provides connection conditions for connecting the connecting part 52, thereby ensuring the stability of the nozzle housing 5.

[0046] Figure 7 A schematic diagram of the nozzle piping assembly 4 is shown. Figure 7 As shown, in some embodiments, the nozzle pipeline assembly 4 includes an oil outlet connector 42 and a delivery pipe 41 connected in sequence. The end of the delivery pipe 41 away from the oil outlet connector 42 is connected to the oil storage structure. The oil outlet connector 42 is fixedly disposed on the transition part 51. The oil inlet chamber 512 is accommodated in the cavity of the oil outlet connector 42. The connection between the oil outlet connector 42 and the oil inlet chamber 512 can provide a delivery channel for fuel and facilitate the transfer of the delivery pipe 41. The connection between the delivery pipe 41 and the oil storage structure can deliver residual oil to the oil inlet chamber 512.

[0047] Figure 2 It shows Figure 1 A magnified view of part A in the image. (For example...) Figure 2 As shown, in some embodiments, a third flat gasket 421 is provided between the upper surface of the oil outlet pipe connector 42 and the end face of the nozzle mounting seat 72, and a fourth flat gasket 422 is provided on the transition portion 51 to contact the lower surface of the oil outlet pipe connector 42; the third flat gasket 421 and the fourth flat gasket 422 serve to prevent leakage.

[0048] Figure 5 A schematic diagram showing the connection between the nozzle assembly, nozzle piping assembly 4, and oil collection box assembly 3 is provided. Figure 5 As shown, in some embodiments, the oil storage structure includes an oil collection box assembly 3 and an oil collection pipe assembly 2 arranged and connected in sequence. The oil collection box assembly 3 is close to the conveying pipe 41. The residual oil in the outer casing 7 enters the oil collection pipe assembly 2 through the oil leakage valve assembly 1. The oil collection pipe assembly 2 conveys the residual oil to the oil collection box assembly 3, thus playing a conveying role.

[0049] In some embodiments, the oil collection pipe assembly 2 includes a collection pipe 22 and an oil inlet pipe connector 21 connected in sequence. The oil inlet pipe connector 21 is connected to the oil leakage valve assembly 1 on the outer casing 7, and the collection pipe 22 is connected to the oil collection box assembly 3. The oil inlet pipe connector 21 and the collection pipe 22 facilitate the rapid collection of residual oil.

[0050] In some embodiments, an oil leak seat 71 is connected to the outer casing 7, and an oil leak valve assembly 1 is internally threaded to the oil leak seat 71. The oil inlet pipe connector 21 is located at the part of the oil leak valve assembly 1 that extends out of the oil leak seat 71. The oil inlet pipe connector 21 can introduce residual oil in the oil leak valve assembly 1 into the collection pipe 22.

[0051] Figure 3 It shows Figure 1 A magnified view of part B in the image. (See image below.) Figure 3 As shown, in some embodiments, a first flat gasket 211 is provided between the upper surface of the oil inlet pipe connector 21 and the end face of the oil leak seat 71, and a second flat gasket 212 is provided on the oil leak valve assembly 1 to contact the lower surface of the oil inlet pipe connector 21; the first flat gasket 211 and the second flat gasket 212 serve to prevent leakage.

[0052] Figure 8 A schematic diagram of the oil collection box assembly 3 is shown. Figure 8 As shown, in some embodiments, the oil collection box assembly 3 includes a box body 31, an inlet pipe 32 communicating with the collection pipe 22, and a direct injection short pipe 33 communicating with the delivery pipe 41. An oil collection groove 311 is provided in the box body 31 below the inlet pipe 32 and the direct injection short pipe 33, and the direct injection short pipe 33 is housed within the oil collection groove 311. The inlet pipe 32 can transport residual oil into the box body 31. Because the horizontal level of the oil collection groove 311 is low, residual oil in the box body 31 flows into the oil collection groove 311, while the direct injection short pipe 33 uses a siphon effect to transfer the residual oil to the delivery pipe 41, until it is sprayed into the flame tube 8. Since the direct injection short pipe 33 is within the oil collection groove 311, it can quickly draw in residual oil, improving delivery efficiency.

[0053] In some embodiments, the direct-fire short pipe 33 includes a straight pipe 333, a bend 332, and an inclined pipe 331 arranged in sequence. The straight pipe 333 is connected to the delivery pipe 41, and the extended end of the inclined pipe 331 is accommodated in the oil collection groove 311. The inclined pipe 331 is inclined to facilitate the rapid entry of residual oil in the oil collection groove 311 into the inclined pipe 331, while the bend 332 guides the residual oil in the inclined pipe 331 to the straight pipe 333, and flows through the nozzle pipeline assembly 4 and the nozzle assembly, and is injected into the flame tube 8 for combustion through the nozzle assembly.

[0054] Figure 6 A schematic diagram of the nozzle assembly is shown. Figure 6As shown, in some embodiments, the nozzle head 6 includes a spray section 62 and a fixing section 61 arranged sequentially along its vertical center line. The fixing section 61 is disposed in the mounting groove 531. The spray section 62 is provided with a spray chamber 63 that passes through the fixing section 61. The spray chamber 63 is connected to the oil outlet chamber 513. The part of the spray section 62 that extends into the flame tube 8 is provided with a spray hole 621. The fixing section 61 can be welded into the mounting groove 531 so that the spray chamber 63 is connected to the oil outlet chamber 513, so that residual oil can be sprayed into the flame tube 8 from the spray hole 621 for atomization and combustion.

[0055] In some embodiments, the diameter of the fixing part 61 is smaller than the diameter of the spraying part 62, the diameter of the spraying part 62 is smaller than the diameter of the mounting part 53, and the diameter of the fixing part 61 is smaller than the diameter of the mounting groove 531; this facilitates welding the fixing part 61 into the mounting groove 531.

[0056] The working principle of collecting and reusing residual oil in the combustion chamber is as follows:

[0057] If the gas turbine engine and auxiliary power unit fail to start and stop working, the oil leakage valve assembly 1 is in the open position. The residual oil deposited in the outer casing 7 of the combustion chamber is then allowed to flow through the oil leakage valve assembly 1 into the oil inlet pipe joint 21 under gravity. It then flows through the oil inlet pipe joint 21, the collection pipe 22, and the inlet pipe 32 into the housing 31 for temporary storage. Because the horizontal level of the oil collection groove 311 is low, the residual oil in the housing 31 will flow into the oil collection groove 311, sealing one end of the direct injection short pipe 33. When the gas turbine engine and auxiliary power unit start normally, the oil leakage valve assembly 1 is in the closed position. As the engine speed increases, the air velocity in the combustion chamber increases... The large volume of fuel will create a vacuum by evacuating the air from the nozzle assembly and nozzle piping assembly 4. Fuel will then be drawn up, and the direct injection short pipe 33 will act as a siphon. The excess fuel stored in the container 31 will flow through the direct injection short pipe 33, the delivery pipe 41, the fuel outlet connector 42, the fuel inlet chamber 512, and the fuel outlet chamber 513 through the siphon effect, and will be discharged from the injection hole 621. This achieves recycling, saves energy, and does not pollute the environment. Because the excess fuel can be reused, the auxiliary power unit and the aircraft's fuel pipeline can be eliminated. Moreover, the container 31 does not need to store excess fuel for a long time, so a lightweight and small fuel collection box can be used. This not only optimizes the aircraft's exhaust structure but also reduces weight.

[0058] Since the oil inlet chamber 512 is transversely penetrating the transition section 51 and the oil inlet chamber 512 is vertically connected to the oil outlet chamber 513, and the diameter of the transition section 51 is larger than that of the mounting section 53, the residual oil will generate pressure after entering the oil outlet chamber 513 from the oil inlet chamber 512, causing it to be sprayed from the injection hole 621 into the flame tube 8 for atomization and combustion.

[0059] Specifically, the auxiliary power unit is equivalent to a small gas turbine engine, so the combustion chamber structure and working principle are the same.

[0060] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A structure for collecting and reusing residual fuel in a combustion chamber, characterized in that, It includes a recovery structure, an outer casing (7), and a flame tube (8) that are arranged and connected in sequence along the vertical line of the combustion chamber; The recovery structure includes a nozzle assembly, a nozzle pipeline assembly (4), and an oil storage structure arranged and connected in sequence. The nozzle assembly passes through the outer casing (7) and extends into the flame tube (8). The end of the oil storage structure away from the nozzle pipeline assembly (4) is connected to the oil leakage valve assembly (1) on the outer casing (7). The nozzle assembly includes a nozzle head (6) arranged and connected in sequence along its own vertical center line, and a nozzle housing (5) connected to the outer casing (7). The nozzle housing (5) is connected to the nozzle pipeline assembly (4). The nozzle head (6) is provided with a spray hole (621) at the part that extends into the flame tube (8). The oil storage structure includes an oil collection box assembly (3), which includes a box body (31). An oil collection groove (311) is provided at the lower part of the box body (31). A direct injection short pipe (33) communicating with the nozzle pipeline assembly (4) is provided inside the box body (31), and the direct injection short pipe (33) is housed in the oil collection groove (311).

2. The combustion chamber residual oil collection and reuse structure according to claim 1, characterized in that, The nozzle housing (5) includes a mounting part (53), a connecting part (52), and a transition part (51) arranged and connected in sequence along its own vertical center line, wherein the diameters of the mounting part (53), the connecting part (52), and the transition part (51) increase in sequence. The transition section (51) is provided with an oil outlet cavity (513) that has a through connection section (52) and an installation section (53). The transition section (51) is provided with an oil inlet chamber (512) that extends horizontally through itself. The oil inlet chamber (512) is vertically connected to the oil outlet chamber (513). The transition section (51) is provided with a nozzle pipeline assembly (4) that communicates with the oil inlet chamber (512). The mounting part (53) is provided with a mounting groove (531) communicating with the oil outlet chamber (513), and a nozzle head (6) is fixedly installed in the mounting groove (531). The connecting part (52) is connected to the outer casing (7).

3. The combustion chamber residual oil collection and reuse structure according to claim 2, characterized in that, The outer casing (7) is provided with a nozzle mounting seat (72) that communicates with itself, and the nozzle mounting seat (72) is threadedly connected to the connecting part (52).

4. The combustion chamber residual oil collection and reuse structure according to claim 3, characterized in that, The nozzle pipeline assembly (4) includes an oil outlet pipe connector (42) and a delivery pipe (41) connected in sequence. The end of the delivery pipe (41) away from the oil outlet pipe connector (42) is connected to the oil storage structure. The oil outlet pipe connector (42) is fixedly installed on the transition part (51). The oil inlet chamber (512) is housed in the cavity of the oil outlet pipe connector (42).

5. The combustion chamber residual oil collection and reuse structure according to claim 4, characterized in that, The oil storage structure also includes an oil collection pipe assembly (2) that is connected in sequence to the oil collection box assembly (3), and the oil collection box assembly (3) is close to the delivery pipe (41).

6. The combustion chamber residual oil collection and reuse structure according to claim 5, characterized in that, The oil collection pipe assembly (2) includes a collection pipe (22) and an oil inlet pipe connector (21) connected in sequence. The oil inlet pipe connector (21) is connected to the oil leakage valve assembly (1) on the outer casing (7). The collection pipe (22) is connected to the oil collection box assembly (3).

7. The combustion chamber residual oil collection and reuse structure according to claim 6, characterized in that, The outer casing (7) is connected to an oil leak seat (71), and the oil leak seat (71) is internally threaded with an oil leak valve assembly (1). The oil inlet pipe connector (21) is located at the part of the oil leak valve assembly (1) that extends out of the oil leak seat (71).

8. The combustion chamber residual oil collection and reuse structure according to claim 1, characterized in that, The direct-fire short pipe (33) includes a straight pipe (333), a bend (332), and an inclined pipe (331) arranged in sequence. The straight pipe (333) is connected to the delivery pipe (41), and the extended end of the inclined pipe (331) is accommodated in the oil collection groove (311).

9. A combustion chamber residual oil collection and reuse structure according to any one of claims 2-8, characterized in that, The nozzle head (6) includes a spraying part (62) and a fixing part (61) arranged sequentially along its vertical center line. The fixing part (61) is located in the mounting groove (531). The spraying part (62) is provided with a spraying chamber (63) that passes through the fixing part (61). The spraying chamber (63) is connected to the oil outlet chamber (513). The part of the spraying part (62) that extends into the flame tube (8) is provided with a spraying hole (621).

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