Combustion chamber

Abstract

This utility model provides a combustion chamber, which includes a flame tube housing with an air inlet end and an air outlet end, a flame tube disposed within the flame tube housing, an oil inlet assembly and an ignition assembly connected to the flame tube. The flame tube housing has a fan-shaped cross-section. The air inlet end of the flame tube housing is provided with an air inlet and an oil inlet. A cover plate is provided on the oil inlet. The oil inlet assembly includes an oil inlet main pipe and multiple branch pipes disposed on the oil inlet main pipe. The cover plate is provided with a main pipe through hole for the oil inlet main pipe to pass through. The head of the flame tube is provided with a branch pipe through hole for the branch pipes to pass through. The ignition assembly includes an ignition oil pipe and a nozzle disposed at the end of the ignition oil pipe. The cover plate is provided with an ignition through hole for the ignition oil pipe to pass through. The head of the flame tube is provided with an ignition through hole for the nozzle to pass through.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to a combustion chamber. Background Technology

[0002] The combustion chamber is one of the core components of power plants such as aero engines and gas turbines. Its main function is to mix fuel and air for efficient combustion, generating high-temperature, high-pressure gas to drive the turbine. In existing technologies, the combustion chamber's flame tube casing generally adopts a cylindrical structure design. While this structure can meet the airflow organization and pressure bearing requirements during combustion to a certain extent, it has significant limitations in terms of manufacturing, assembly, maintenance, and adaptability to specific application scenarios.

[0003] First, the cylindrical flame tube casing is difficult to manufacture. Because the cylindrical structure is a closed annular cavity, precision machining of its inner wall requires specialized deep-hole machining equipment or complex tooling fixtures. This is especially true for large-sized or thin-walled cylindrical casings, where deformation and uneven wall thickness are prone to occur during machining, increasing processing time and manufacturing costs. Second, the cylindrical casing offers poor assembly and maintenance convenience. When installing internal components such as the flame tube, fuel inlet assembly, and ignition assembly, the enclosed annular space restricts the operator's field of vision and movement, increasing assembly difficulty and hindering subsequent maintenance and component replacement.

[0004] Therefore, it is necessary to design a combustion chamber to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a combustion chamber that is easy to process and maintain.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a combustion chamber, characterized in that: it includes a flame tube housing having an air inlet end and an air outlet end, a flame tube disposed within the flame tube housing, an oil inlet assembly and an ignition assembly connected to the flame tube, the flame tube housing having a fan-shaped cross-section, the air inlet end of the flame tube housing having an air inlet and an oil inlet, the oil inlet having a cover plate, the oil inlet assembly including an oil inlet main pipe and multiple branch pipes disposed on the oil inlet main pipe, the cover plate having a main pipe through hole for the oil inlet main pipe to pass through, the head of the flame tube having a branch pipe through hole for the branch pipes to pass through, the ignition assembly including an ignition oil pipe and a nozzle disposed at the end of the ignition oil pipe, the cover plate having an ignition through hole for the ignition oil pipe to pass through, and the head of the flame tube having an ignition through hole for the nozzle to pass through.

[0007] As a further improvement of the present invention, the flame tube casing includes an outer ring wall, an inner ring wall, and two radial side walls connecting the inner ring wall and the outer ring wall. The inner ring wall is arc-shaped, and the outer ring wall includes an arc-shaped wall and a conical wall that tapers from the arc-shaped wall toward the inner ring wall.

[0008] As a further improvement of this utility model, the through holes on the flame tube are arranged in an arc shape.

[0009] As a further improvement of the present invention, the flame tube includes an arc-shaped portion near the air inlet end of the flame tube housing and a conical portion near the air outlet end of the flame tube housing.

[0010] As a further improvement of the present invention, the invention also includes an air intake assembly for supplying air to the flame tube, the air intake assembly being connected to the air inlet, the flame tube having a plurality of ventilation holes on its wall surface, the ventilation holes connecting the outside and inside of the flame tube; and a combustion gas outlet being provided at the tail end of the flame tube.

[0011] As a further improvement of the present invention, the flame tube includes an inner ring wall, an outer ring wall, a top wall and two radial side walls, and the ventilation holes are provided on the outer ring wall and the inner ring wall. The inner side of the ventilation holes of the inner ring wall is provided with a guide tube.

[0012] As a further improvement of the present invention, the ignition assembly further includes an ignition rod, the ignition end of which is close to the nozzle.

[0013] As a further improvement of the present invention, the invention also includes a monitoring component and an extension tube. The extension tube is connected to the gas outlet of the flame tube casing. The monitoring component includes a mounting base, a pressure monitoring rod and a temperature detection rod disposed on the mounting base. The mounting base is disposed on the extension tube. The end of the temperature detection rod is located at the combustion gas outlet, and the end of the pressure monitoring rod is located below the combustion gas outlet.

[0014] As a further improvement of this utility model, the ignition rod is mounted on the mounting base.

[0015] As can be seen from the above technical solutions, the combustion chamber of this utility model has the following advantages: 1. This utility model designs the cross-section of the flame tube casing as a fan shape, which has an essential processing advantage compared to the traditional cylindrical casing: the fan-shaped structure is an open design that is not closed, and the inner wall of the casing and each connecting hole (air inlet, oil inlet, ignition through hole, etc.) can be completed by conventional milling, drilling and other processing equipment, without the need for special deep hole processing tooling, which effectively simplifies the processing process; in addition, the simplified processing process also shortens the processing cycle and reduces equipment investment and labor costs.

[0016] 2. The open structure of the fan-shaped flame tube casing provides ample operating space for the assembly and maintenance of the flame tube and other accessories. When installing the flame tube, it can be directly inserted into the casing from the open side, eliminating the need for axial insertion as required by cylindrical casings. The main oil inlet pipe of the oil inlet assembly connects directly to the branch pipe through-hole on the flame tube head through the main pipe through-hole on the cover plate. The ignition oil pipe of the ignition assembly mates with the nozzle through the ignition through-hole. The entire assembly process is intuitive and convenient, significantly reducing assembly time. During subsequent maintenance and repair, only the cover plate needs to be removed for inspection and replacement of internal components, avoiding disassembly of the entire casing structure, significantly improving maintenance efficiency and reducing maintenance costs. Attached Figure Description

[0017] Figure 1 This is a perspective view of the combustion chamber according to an embodiment of the present invention.

[0018] Figure 2 for Figure 1 A three-dimensional view of the combustion chamber.

[0019] Figure 3 for Figure 1 Cross-sectional view of the combustion section.

[0020] Figure 4 for Figure 3 A three-dimensional view of the flame tube, oil inlet assembly, and ignition assembly.

[0021] Figure 5 for Figure 1 A partial sectional view of the combustion chamber. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] Please refer to Figure 1 and Figure 2 As shown, this utility model provides a combustion chamber, which includes a combustion section 10, an air intake assembly 20, and an extension pipe 30. The air intake assembly 20 is used to supply air to the combustion section, and the extension pipe 30 is used to export the energy generated by the combustion section 10.

[0024] Please participate together Figure 3As shown, the combustion section 10 includes a flame tube housing 11 with an air inlet and an air outlet, a flame tube 12 disposed within the flame tube housing 11, an oil inlet assembly 13 connected to the flame tube 12, and an ignition assembly 14. The air inlet of the flame tube housing 11 is provided with an air inlet 111 and an oil inlet, and the air inlet assembly 20 is connected to the air inlet 111. A cover plate 113 is provided on the oil inlet, and the air outlet of the flame tube housing 11 is provided with an air outlet 112, and an extension pipe 30 is connected to the air outlet 112. The cross-section of the flame tube housing 11 is fan-shaped. Specifically, the flame tube housing 11 includes an outer ring wall 114, an inner ring wall 115, and two radial side walls 116 connecting the inner ring wall 115 and the outer ring wall 114. The inner ring wall 115 is arc-shaped, and the outer ring wall 114 includes an arc-shaped wall 11a and a conical wall 11b that tapers from the arc-shaped wall 11a toward the inner ring wall 115.

[0025] Please refer to Figure 3 and Figure 4 As shown, the flame tube 12 is disposed within the inner cavity of the flame tube housing 11, and its shape matches the shape of the inner cavity of the flame tube housing 11. The flame tube 12 includes an arc-shaped portion near the air inlet end of the flame tube housing 11 and a conical portion near the air outlet end of the flame tube housing 11. The wall surface of the flame tube 12 is provided with multiple ventilation holes 121, which connect the outside and inside of the flame tube 12; the tail end of the flame tube is provided with a combustion gas outlet 122. Specifically, the flame tube 12 includes an inner ring wall 126, an outer ring wall 125, a top wall 124, and two radial side walls 127. The ventilation holes 121 are disposed on the outer ring wall 125 and the inner ring wall 126, and an air guide duct 123 is provided inside the ventilation holes 121 of the inner ring wall 126.

[0026] The fuel inlet assembly 13 is used to introduce fuel into the flame tube 12. The fuel inlet assembly 13 includes a main fuel inlet pipe 131 and a plurality of branch pipes 132 provided on the main fuel inlet pipe 131. The cover plate 113 is provided with a main pipe through hole for the main fuel inlet pipe 131 to pass through. The head of the flame tube 12 is provided with a branch pipe through hole for the branch pipes 132 to pass through. The branch pipe through holes correspond one-to-one with the branch pipes 132 and are arranged in an arc shape.

[0027] The ignition assembly 14 includes an ignition oil pipe 141, a nozzle 142 located at the end of the ignition oil pipe 141, and an ignition rod. The cover plate 113 is provided with an ignition through hole for the ignition oil pipe 141 to pass through, and the head of the flame tube 12 is provided with an ignition through hole for the nozzle 142 to pass through. The ignition end of the ignition rod is located close to the nozzle 142.

[0028] Please participate together Figure 5As shown, the combustion chamber of this embodiment also includes a monitoring component 40. The monitoring component 40 includes a mounting base 41, a pressure monitoring rod 42 and a temperature detection rod 43 disposed on the mounting base 41. The mounting base 41 is disposed on the extension tube 30. The end of the temperature detection rod 43 is located at the combustion gas outlet 122, and the end of the pressure monitoring rod 42 is located below the combustion gas outlet 122. The ignition rod is mounted on the mounting base, and the ignition end of the ignition rod passes through the combustion gas outlet 122 and is close to the nozzle 142 at the end of the ignition oil pipe 141.

[0029] The terms used herein, such as "inner" and "outer," indicating spatial relative position, are for illustrative purposes to describe the relationship of one feature relative to another, as shown in the accompanying drawings. It is understood that, depending on the product's placement, these terms may be intended to include different orientations besides those shown in the figures, and should not be construed as limiting the claims.

[0030] Furthermore, the above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. The understanding of this specification should be based on those skilled in the art. Although the present utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still make modifications or equivalent substitutions to the present utility model. All technical solutions and improvements that do not depart from the spirit and scope of the present utility model should be covered within the scope of the claims of the present utility model.

Claims

1. A combustion chamber, characterized in that: The device includes a flame tube housing with an air inlet and an air outlet, a flame tube housed within the flame tube housing, an oil inlet assembly and an ignition assembly connected to the flame tube. The flame tube housing has a fan-shaped cross-section. The air inlet of the flame tube housing has an air inlet and an oil inlet. The oil inlet is covered with a cover plate. The oil inlet assembly includes a main oil inlet pipe and multiple branch pipes on the main oil inlet pipe. The cover plate has a main pipe through-hole for the main oil inlet pipe to pass through. The head of the flame tube has a branch pipe through-hole for the branch pipes to pass through. The ignition assembly includes an ignition oil pipe and a nozzle at the end of the ignition oil pipe. The cover plate has an ignition through-hole for the ignition oil pipe to pass through. The head of the flame tube has an ignition through-hole for the nozzle to pass through.

2. The combustion chamber as described in claim 1, characterized in that: The flame tube casing includes an outer ring wall, an inner ring wall, and two radial side walls connecting the inner ring wall and the outer ring wall. The inner ring wall is arc-shaped, and the outer ring wall includes an arc-shaped wall and a conical wall that tapers from the arc-shaped wall toward the inner ring wall.

3. The combustion chamber as described in claim 1, characterized in that: The through holes on the flame tube are arranged in an arc shape.

4. The combustion chamber as described in claim 2, characterized in that: The flame tube includes an arc-shaped portion near the air inlet end of the flame tube housing and a conical portion near the air outlet end of the flame tube housing.

5. The combustion chamber as described in claim 1, characterized in that: It also includes an air intake assembly that supplies air to the flame tube, the air intake assembly being connected to the air inlet, the flame tube having multiple ventilation holes on its wall surface, the ventilation holes connecting the outside and inside of the flame tube; and a combustion gas outlet being provided at the tail end of the flame tube.

6. The combustion chamber as described in claim 5, characterized in that: The flame tube includes an inner ring wall, an outer ring wall, a top wall, and two radial side walls. The ventilation holes are provided on the outer ring wall and the inner ring wall, and an air guide tube is provided inside the ventilation holes of the inner ring wall.

7. The combustion chamber as described in claim 5, characterized in that: The ignition assembly also includes an ignition rod, the ignition end of which is close to the nozzle.

8. The combustion chamber as described in claim 7, characterized in that: It also includes a monitoring component and an extension tube. The extension tube is connected to the gas outlet of the flame tube casing. The monitoring component includes a mounting base, a pressure monitoring rod and a temperature detection rod disposed on the mounting base. The mounting base is disposed on the extension tube. The end of the temperature detection rod is located at the combustion gas outlet, and the end of the pressure monitoring rod is located below the combustion gas outlet.

9. The combustion chamber as described in claim 8, characterized in that: The ignition rod is mounted on the mounting base.

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