Combustion chamber with adjustable air entraining structure

Abstract

The invention relates to the technical field of aero-engines, and discloses a combustion chamber with an adjustable air entraining structure, the combustion chamber comprises a cartridge receiver structure, the air entraining structure and an adjusting structure, the cartridge receiver structure comprises a first cartridge receiver and a second cartridge receiver, the first cartridge receiver and the second cartridge receiver are connected with each other and jointly define a mounting cavity, and the first cartridge receiver is provided with a first communication part and a second communication part; the air entraining structure is provided with a communicating cavity, the communicating cavity is provided with a first opening, a second opening and a third opening, the first opening communicates with the first communicating part, the second opening communicates with the second communicating part, and the third opening communicates with the engine; the adjusting structure comprises a first adjusting assembly and a second adjusting assembly, the first adjusting assembly covers the first communicating part and is arranged on the first casing, and the second adjusting assembly covers the second communicating part and is arranged on the first casing; ignition delay and flameout of the auxiliary power device in a small state are avoided, low-frequency excitation of the flame tube in a large state is avoided, and performance degradation of the combustion chamber in an intermediate value state is avoided.

Description

Technical Field

[0001] This invention relates to the field of aero-engine technology, and more specifically to a combustion chamber with an adjustable bleed air structure. Background Technology

[0002] Aircraft engines require external energy input to achieve low-speed operation before starting, allowing them to reach an adaptive continuous operating state. Larger power engines typically use compressed air at a certain pressure to drive an air turbine for starting. Bleed air on aircraft is generally provided by an auxiliary power unit (APU), a small gas turbine engine. Before takeoff, it supplies air to the aircraft's air conditioning system or provides air for starting the main engines; during flight, it provides emergency energy to improve flight safety.

[0003] Currently, auxiliary power units (APUs) employ two main bleed air methods: core engine bleed air and load compressor bleed air. Core engine bleed air is the most widely used method. This involves creating a bleed air annular cavity in the combustion chamber casing and drawing compressed air from two channels to start the main engine (both on the ground and in the air). Bleed air from the combustion chamber, on the other hand, can significantly alter the flow field distribution within the combustion chamber, thus having a substantial impact on the performance of the APU.

[0004] However, due to the presence of the bleed air ring cavity, in the low-power state of the auxiliary power unit, the bleed air ring cavity diverts some air, and there are ring vortices at the point where the airflow enters the bleed air ring cavity, which can easily cause ignition delay and flameout. In the high-power state of the auxiliary power unit, since the bleed air outlet of the bleed air ring cavity is usually located at a specific position in the circumference, when the airflow passes through the circumferentially uniform bleed air holes, the bleed air flow rate in the area near the bleed air outlet will be significantly greater than that in the area far from the bleed air outlet. This uneven bleed air will cause ring vortices at the air intake position of the bleed air ring cavity, causing low-frequency vibration of the flame tube, which in turn will generate cracks and reduce engine life, especially the vibration caused by bleed air from the head of the combustion chamber. In the intermediate value state of the auxiliary power unit, the unevenness of the bleed air will cause the combustion chamber performance to degrade, resulting in increased fuel consumption of the auxiliary power unit. Summary of the Invention

[0005] In view of this, the present invention provides a combustion chamber with an adjustable bleed air structure to solve the problems of existing combustion chambers, which, due to the presence of the bleed air ring cavity, cause ignition delay and flameout of the auxiliary power unit under low conditions, cause low-frequency vibration of the flame tube under high conditions, and cause performance degradation of the combustion chamber under intermediate conditions.

[0006] In a first aspect, the present invention provides a combustion chamber with an adjustable bleed air structure, comprising:

[0007] The casing structure includes a first casing and a second casing, which are connected to each other and together form a mounting cavity. The first casing is adapted to be connected to a compressor, and the mounting cavity is adapted to install a flame tube. The first casing has a first connecting part and a second connecting part that communicate with the mounting cavity, and the first connecting part and the second connecting part are spaced apart.

[0008] An air bleed structure has a communicating cavity, the communicating cavity having a first opening, a second opening and a third opening spaced apart, the first opening being adapted to communicate with a first communicating portion, the second opening being adapted to communicate with a second communicating portion, and the third opening being adapted to communicate with an engine;

[0009] The adjustment structure includes a first adjustment component and a second adjustment component. The first adjustment component is adapted to cover the first connecting portion and is disposed on the first housing. The second adjustment component is adapted to cover the second connecting portion and is disposed on the first housing. Under the action of an external force, the first adjustment component has a first open state and a first closed state for opening or closing the first connecting portion, and the second adjustment component has a second open state and a second closed state for opening or closing the second connecting portion.

[0010] Beneficial effects: By setting the first adjustment component and the second adjustment component to control the opening and closing of the first and second connecting parts respectively, the flow of bleed air in the mounting cavity into the connecting part can be regulated. Thus, when the auxiliary power unit is in different states, the first and second adjustment components can be used to control whether the bleed air in the mounting cavity needs to flow into the connecting cavity and to control the bleed air in the mounting cavity to flow into the connecting cavity through the first and / or second connecting parts. This prevents the auxiliary power unit from experiencing ignition delay and flameout in low-level conditions, from low-frequency vibration of the flame tube in high-level conditions, and from causing combustion chamber performance degradation in intermediate-level conditions, which helps to improve the service life of the auxiliary power unit.

[0011] In one optional embodiment, the adjustment structure further includes a third adjustment component disposed within the third opening, the third adjustment component having a third connected state and a third closed state for opening or closing the third opening.

[0012] Beneficial effects: The adjustment structure also includes a third adjustment component, which is specifically set in the third opening. Under the action of external force, the third adjustment component has a third connected state and a third closed state, which open or close the third opening. In this way, the connection between the third opening and the engine can be controlled by the third adjustment component, and the flow state of the bleed air in the connecting cavity can be controlled.

[0013] In one alternative embodiment, the adjustment structure has an airless state in which the first adjustment component is in a first closed state, the second adjustment component is in a second closed state, and the third adjustment component is in a third closed state.

[0014] Beneficial effects: By setting the adjustment structure to have a no-bleed air state, specifically the first adjustment component being in the first closed state, the second adjustment component being in the second closed state, and the third adjustment component being in the third closed state, when the compressor blows bleed air into the installation cavity, the bleed air cannot flow into the connecting cavity through the first and second connecting parts, thus preventing the bleed air from being diverted. This ensures that the auxiliary power unit will not experience ignition delay or flameout in low-power conditions.

[0015] In an optional embodiment, the adjustment structure further includes a main bleed state in which the first adjustment component is in a first open state, the second adjustment component is in a second closed state, and the third adjustment component is in a third open state.

[0016] Beneficial effects: By setting the adjustment structure to have a main bleed air state, specifically the first adjustment component being in the first open state, the second adjustment component being in the second closed state, and the third adjustment component being in the third open state, when the compressor blows bleed air into the installation cavity, the bleed air can only flow into the connecting cavity through the first connecting part and cannot flow into the connecting cavity through the second connecting part. This prevents the bleed air from being diverted at the head of the flame tube and generating a vortex, thereby ensuring that the auxiliary power unit will not cause low-frequency vibration of the flame tube under normal conditions.

[0017] In an optional embodiment, the adjustment structure further includes a secondary bleed state in which the first adjustment component is in a first closed state, the second adjustment component is in a second open state, and the third adjustment component is in a third open state.

[0018] Beneficial effects: By setting the adjustment structure, there is also a secondary bleed air state. Specifically, the first adjustment component is in the first closed state, the second adjustment component is in the second open state, and the third adjustment component is in the third open state. In this way, when the compressor blows bleed air into the installation cavity, the bleed air can only flow into the connecting cavity through the second connecting part, and cannot flow into the connecting cavity through the first connecting part. This causes the bleed air to be split only at the head of the flame tube, thus ensuring the uniformity of the bleed air in the installation cavity, thereby improving the combustion performance of the auxiliary power unit in the intermediate value state.

[0019] In an optional embodiment, the adjustment structure further includes a fully ventilated state in which the first adjustment component is in a first open state, the second adjustment component is in a second open state, and the third adjustment component is in a third open state.

[0020] Beneficial effects: By setting the adjustment structure, it also has a full bleed air state. Specifically, the full bleed air state means that the first adjustment component is in the first open state, the second adjustment component is in the second open state, and the third adjustment component is in the third open state. In this way, when the compressor blows bleed air into the installation cavity, the bleed air can flow into the connecting cavity through the first connecting part and the second connecting part respectively, so that the bleed air will be split at the head position and the outer ring position of the flame tube. This can also ensure the uniformity of bleed air in the installation cavity, thereby improving the combustion performance of the auxiliary power unit in the intermediate value state.

[0021] In one optional embodiment, the first adjustment assembly includes a first blocking member, a first adapter member, and a first pushing member. The first blocking member is adapted to cover the first connecting portion and is slidably disposed on the first housing. One end of the first adapter member is engaged with the first blocking member, and the other end of the first adapter member is connected to the first pushing member.

[0022] Beneficial effects: By setting the first adjustment component including a first blocking member, a first adapter member, and a first pushing member, in this embodiment the first blocking member, the first adapter member, and the first pushing member are respectively a first blocking block, a first adapter block, and a first pushing rod. The first blocking member can cover the first connecting portion and slide on the first housing. One end of the first adapter member is engaged with the first blocking member, and the other end is connected to the first pushing member. Thus, under the action of external force, the first pushing member can rotate and drive the first adapter member to rotate. The first adapter member can then drive the first blocking member to slide on the first housing, thereby enabling the first blocking member to open or close the first connecting portion and enabling the first adjustment component to have a first open state and a first closed state.

[0023] In one optional embodiment, the second adjustment assembly includes a second blocking member, a second adapter member, and a second pusher member. The second blocking member is adapted to cover the second connecting portion and is slidably disposed on the first housing. One end of the second adapter member is engaged with the second blocking member, and the other end of the second adapter member is connected to the second pusher member.

[0024] Beneficial effects: By setting the second adjustment component including a second blocking member, a second adapter member, and a second pusher member, in this embodiment the second blocking member, the second adapter member, and the second pusher member are respectively a second blocking block, a second adapter block, and a second pusher rod. The second blocking member can cover the second connecting portion and slide on the first housing. One end of the second adapter member is engaged with the second blocking member, and the other end is connected to the second pusher member. Thus, under the action of external force, the second pusher member can rotate and drive the second adapter member to rotate. The second adapter member can then drive the second blocking member to slide on the second housing, thereby enabling the second blocking member to open or close the second connecting portion and enabling the second adjustment component to have a second open state and a second closed state.

[0025] In one optional embodiment, the third regulating component includes a valve body, a valve core, a third adapter, and a third pusher. The valve body is disposed within the third opening, the valve core is rotatably disposed within the valve body, one end of the third adapter is connected to the valve core, and the other end of the third adapter is connected to the third pusher.

[0026] Beneficial effects: By setting a third regulating component including a valve body, a valve core, a third adapter, and a third pusher, the third adapter and the third pusher in this embodiment are respectively a third adapter block and a third pusher rod. The valve body is set inside the third opening, and the valve core is rotatably set inside the valve body. One end of the third adapter is connected to the valve core, and the other end is connected to the third pusher. Thus, under the action of external force, the third pusher can rotate and drive the third adapter to rotate. The third adapter can drive the valve core to rotate inside the valve body, thereby enabling the valve core to control the opening and closing of the valve body and synchronously control the opening and closing of the third opening.

[0027] In one optional embodiment, the air duct structure includes a three-way connector and a first air duct assembly and a second air duct assembly connected to the end of the three-way connector. The first opening is formed on the first air duct assembly, and the first air duct assembly is adapted to cover the first connecting portion and connect to the first housing. The second opening is formed on the second air duct assembly, and the second air duct assembly is adapted to cover the second connecting portion and connect to the first housing.

[0028] The three-way connector has a first end, a second end, and a third end. The first end is connected to the first air intake assembly, the second end is connected to the second air intake assembly, and the third opening is formed on the third end, which is adapted to be connected to the engine.

[0029] The first air intake component, the second air intake component, and the three-way connector together form the communicating cavity.

[0030] Beneficial effects: By setting an air bleed structure including a three-way connector and a first air bleed assembly and a second air bleed assembly connected to the end of the three-way connector, wherein a first opening is opened on the first air bleed assembly, and the first air bleed assembly can cover the first connecting portion disposed on the first casing, thereby allowing the first air bleed assembly to communicate with the mounting cavity through the first opening and the first connecting portion; a second opening is opened on the second air bleed assembly, and the second air bleed assembly can cover the second connecting portion disposed on the first casing, thereby allowing the second air bleed assembly to communicate with the mounting cavity through the second opening and the second connecting portion; in this embodiment, the three-way connector is a three-way pipe, the three-way connector having a first end, a second end and a third end, wherein the first end is connected to the first air bleed assembly, and the second end is connected to the second air bleed assembly, thereby allowing the three-way connector, the first air bleed assembly and the second air bleed assembly to become a whole, and allowing the three-way connector, the first air bleed assembly and the second air bleed assembly to form a communicating cavity; in addition, a third opening is opened on the third end, and the third end can be connected to the engine, thus allowing the three-way connector to communicate with the engine through the third opening.

[0031] In one optional embodiment, the first air intake assembly includes a first air intake member and a first connector. The first opening is formed at the end of the first air intake member, and the first air intake member is adapted to cover the first connecting portion and connect to the first housing. The two ends of the first connector are respectively connected to the end of the first air intake member away from the first opening and the first end.

[0032] The second air intake assembly includes a second air intake member and a second connector. The second opening is formed at the end of the second air intake member, and the second air intake member is adapted to cover the second communication portion and connect to the first casing. The two ends of the second connector are respectively connected to the end of the second air intake member away from the second opening and the second end.

[0033] Beneficial effects: By setting a first air intake assembly including a first air intake element and a first connecting element, and setting a second air intake assembly including a second air intake element and a second connecting element, wherein the first air intake element and the first connecting element in this embodiment are respectively a first air intake ring pipe and a first connecting pipe, and the second air intake element and the second connecting element in this embodiment are respectively a second air intake ring pipe and a second connecting pipe, wherein the first air intake element can cover the first connecting portion and connect to the first housing, and the two ends of the first connecting element are respectively connected to the end of the first air intake element away from the first opening and the first end, thereby connecting the first air intake assembly between the three-way member and the first housing and guiding the air intake; the second air intake element can cover the second connecting portion and connect to the first housing, and the two ends of the second connecting element are respectively connected to the end of the second air intake element away from the second opening and the second end, thereby connecting the second air intake assembly between the three-way member and the first housing and guiding the air intake. Attached Figure Description

[0034] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific 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 from these drawings without creative effort.

[0035] Figure 1 This is a plan view of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention;

[0036] Figure 2 This is a plan view of the casing structure of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention;

[0037] Figure 3 This is a plan view of the bleed air structure of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the installation of the first adjustment component of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention;

[0039] Figure 5 This is a plan view of the first adjustment component of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention;

[0040] Figure 6 This is a schematic diagram of the installation of the second adjustment component of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention;

[0041] Figure 7 This is a plan view of the second adjustment component of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention;

[0042] Figure 8 This is a plan view of the third adjustment component of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention;

[0043] Figure 9 This is a schematic diagram of the first adjustment component of a combustion chamber with an adjustable bleed air structure before operation, according to an embodiment of the present invention.

[0044] Figure 10 This is a schematic diagram of the first adjustment component of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention after operation;

[0045] Figure 11 This is a schematic diagram of the second adjustment component of a combustion chamber with an adjustable bleed air structure before operation, according to an embodiment of the present invention.

[0046] Figure 12This is a schematic diagram of the second adjustment component of a combustion chamber with an adjustable bleed air structure according to an embodiment of the present invention after operation;

[0047] Figure 13 This is a plan view of the flame tube of a combustion chamber with an adjustable bleed structure according to an embodiment of the present invention.

[0048] Explanation of reference numerals in the attached figures:

[0049] 1-Casing structure; 11-First casing; 111-First connecting part; 112-Second connecting part; 12-Second casing; 2-Air bleed structure; 21-First air bleed assembly; 211-First air bleed component; 212-First connector; 22-Second air bleed assembly; 221-Second air bleed component; 222-Second connector; 23-T-joint; 231-Third opening;

[0050] 31-First adjusting assembly; 311-First blocking member; 312-First adapter; 313-First pushing member; 32-Second adjusting assembly; 321-Second blocking member; 322-Second adapter; 323-Second pushing member; 33-Third adjusting assembly; 331-Valve body; 332-Valve core; 333-Third adapter; 334-Third pushing member;

[0051] 4-Flame tube; 41-Head; 42-Outer ring; 5-Nozzle; 6-Nozzle mounting part. Detailed Implementation

[0052] 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.

[0053] The following is combined with Figures 1 to 13 The following describes embodiments of the present invention.

[0054] According to embodiments of the present invention, in one aspect, a combustion chamber with an adjustable bleed air structure is provided, such as... Figures 1 to 13As shown, the device includes a casing structure 1, an air bleed structure 2, and an adjustment structure. The casing structure 1 includes a first casing 11 and a second casing 12, which are interconnected and together form a mounting cavity. The first casing 11 is adapted to be connected to a compressor, and the mounting cavity is adapted to install a flame tube 4. The first casing 11 has a first connecting portion 111 and a second connecting portion 112 that communicate with the mounting cavity, and the first connecting portion 111 and the second connecting portion 112 are spaced apart. The air bleed structure 2 has a connecting cavity with a first opening, a second opening, and a third opening 231 that are spaced apart. The first opening is adapted to connect to the first connecting portion 111. The passage 111 is connected, the second opening is adapted to communicate with the second connecting part 112, and the third opening 231 is adapted to communicate with the engine; the adjustment structure includes a first adjustment component 31 and a second adjustment component 32. The first adjustment component 31 is adapted to cover the first connecting part 111 and is disposed on the first housing 11, and the second adjustment component 32 is adapted to cover the second connecting part 112 and is disposed on the first housing 11. Under the action of external force, the first adjustment component 31 has a first open state and a first closed state for opening or closing the first connecting part 111, and the second adjustment component 32 has a second open state and a second closed state for opening or closing the second connecting part 112.

[0055] The combustion chamber of the adjustable bleed air structure described above is provided with a bleed air structure 2 and an adjustment structure on the casing structure 1. The casing structure 1 includes a first casing 11 and a second casing 12, which are connected to each other and together form a mounting cavity. The first casing 11 can be connected to a compressor, and the flame tube 4 can be installed in the mounting cavity. In addition, the first casing 11 has a first connecting part 111 and a second connecting part 112 that communicate with the mounting cavity. In this embodiment, the first connecting part 111 and the second connecting part 112 are respectively a first connecting hole and a second connecting hole. In this way, the mounting cavity can be connected to the outside through the first connecting part 111 and the second connecting part 112.

[0056] The bleed air structure 2 has a connecting cavity, and the connecting cavity has a first opening, a second opening and a third opening 231 arranged at intervals. The first opening can communicate with the first connecting part 111, the second opening can communicate with the second connecting part 112, and the third opening 231 can communicate with the engine. In this way, when the compressor blows bleed air into the mounting cavity, part of the bleed air can flow into the connecting cavity through the first connecting part 111 and the second connecting part 112, and then flow into the aircraft through the third opening 231 in the connecting cavity, so as to provide sufficient air supply for the aircraft.

[0057] The adjustment structure specifically includes a first adjustment component 31 and a second adjustment component 32. The first adjustment component 31 is disposed on the first housing 11 and covers the first connecting portion 111. The second adjustment component 32 is disposed on the first housing 11 and covers the second connecting portion 112. Thus, under the action of external force, the first adjustment component 31 can have a first open state and a first closed state for opening or closing the first connecting portion 111, and the second adjustment component 32 can have a second open state and a second closed state for opening or closing the second connecting portion 112.

[0058] In summary, by setting the first adjustment component 31 and the second adjustment component 32 to control the opening and closing of the first connecting part 111 and the second connecting part 112 respectively, the flow of induced air in the mounting cavity into the connecting part can be regulated. Thus, when the auxiliary power device is in different states, the first adjustment component 31 and the second adjustment component 32 can control whether the induced air in the mounting cavity needs to flow into the connecting cavity and control the induced air in the mounting cavity to flow into the connecting cavity through the first connecting part 111 and / or the second connecting part 112. This prevents the auxiliary power device from experiencing ignition delay and flameout in low-level conditions, from causing low-frequency vibration of the flame tube 4 in high-level conditions, and from causing combustion chamber performance degradation in intermediate-level conditions, which is beneficial to improving the service life of the auxiliary power device.

[0059] It should be noted that, as Figure 1 and Figure 13 As shown, the first housing 11 is provided with a nozzle mounting part 6. In this embodiment, the nozzle mounting part 6 is a nozzle 5 mounting hole. The nozzle 5 is mounted on the first housing 11 through the nozzle mounting part 6. Meanwhile, the flame tube 4 includes an outer ring 42 and a head 41 that are connected to each other. The outer ring 42 is provided with a clearance part. In this embodiment, the clearance part is a clearance hole. When the nozzle 5 is mounted on the housing through the nozzle mounting part 6, the end of the nozzle 5 can extend into the flame tube 4 through the clearance part, so that the nozzle 5 can play an ignition role in the flame tube 4.

[0060] In one embodiment, such as Figure 1 As shown, the adjustment structure also includes a third adjustment component 33, which is disposed in the third opening 231. The third adjustment component 33 has a third connected state and a third closed state for opening or closing the third opening 231.

[0061] The combustion chamber of the adjustable bleed air structure described above also includes a third adjustment component 33 by setting an adjustment structure. The third adjustment component 33 is specifically set in the third opening 231. Under the action of external force, the third adjustment component 33 has a third connected state and a third closed state of opening or closing the third opening 231. In this way, the connection and disconnection between the third opening 231 and the engine can be controlled by the third adjustment component 33, and the flow state of the bleed air in the connecting cavity can be controlled.

[0062] In one embodiment, such as Figure 1 As shown, the adjustment structure has a non-air-drawing state in which the first adjustment component 31 is in a first closed state, the second adjustment component 32 is in a second closed state, and the third adjustment component 33 is in a third closed state.

[0063] The combustion chamber of the adjustable bleed air structure described above has a bleed air-free state by setting an adjustment structure. Specifically, the bleed air-free state is that the first adjustment component 31 is in the first closed state, the second adjustment component 32 is in the second closed state, and the third adjustment component 33 is in the third closed state. In this way, when the compressor blows bleed air into the mounting cavity, the bleed air cannot flow into the connecting cavity through the first connecting part 111 and the second connecting part 112, so that the bleed air will not be diverted. This ensures that the auxiliary power unit will not experience ignition delay or flameout in the low-power state.

[0064] In one embodiment, such as Figure 1 As shown, the adjustment structure also has a main bleed air state in which the first adjustment component 31 is in a first open state, the second adjustment component 32 is in a second closed state, and the third adjustment component 33 is in a third open state.

[0065] The combustion chamber of the adjustable bleed air structure described above has a main bleed air state by setting an adjustment structure. Specifically, the main bleed air state is that the first adjustment component 31 is in the first open state, the second adjustment component 32 is in the second closed state, and the third adjustment component 33 is in the third open state. In this way, when the compressor blows bleed air into the installation cavity, the bleed air can only flow into the connecting cavity through the first connecting part 111, and cannot flow into the connecting cavity through the second connecting part 112. This prevents the bleed air from being diverted at the head 41 of the flame tube 4 and generating a vortex. This ensures that the auxiliary power unit will not cause the flame tube 4 to vibrate at low frequency under normal conditions.

[0066] In one embodiment, such as Figure 1 As shown, the adjustment structure also has a secondary air intake state in which the first adjustment component 31 is in a first closed state, the second adjustment component 32 is in a second open state, and the third adjustment component 33 is in a third open state.

[0067] The combustion chamber of the adjustable bleed air structure described above also has a secondary bleed air state through the setting of the adjustment structure. Specifically, the secondary bleed air state is that the first adjustment component 31 is in the first closed state, the second adjustment component 32 is in the second open state, and the third adjustment component 33 is in the third open state. In this way, when the compressor blows bleed air into the mounting cavity, the bleed air can only flow into the connecting cavity through the second connecting part 112, and cannot flow into the connecting cavity through the first connecting part 111. This makes the bleed air only split at the head 41 position of the flame tube 4, thus ensuring the uniformity of the bleed air in the mounting cavity, thereby improving the combustion performance of the auxiliary power device in the intermediate value state.

[0068] In one embodiment, such as Figure 1 As shown, the adjustment structure also has a full bleed state in which the first adjustment component 31 is in a first open state, the second adjustment component 32 is in a second open state, and the third adjustment component 33 is in a third open state.

[0069] The combustion chamber of the adjustable bleed air structure described above also has a full bleed air state through the setting of the adjustment structure. Specifically, the full bleed air state is that the first adjustment component 31 is in the first open state, the second adjustment component 32 is in the second open state, and the third adjustment component 33 is in the third open state. In this way, when the compressor blows bleed air into the mounting cavity, the bleed air can flow into the connecting cavity through the first connecting part 111 and the second connecting part 112 respectively, so that the bleed air will be split at the head 41 position and the outer ring 42 position of the flame tube 4. In this way, the uniformity of bleed air in the mounting cavity can also be guaranteed, thereby improving the combustion performance of the auxiliary power unit in the intermediate value state.

[0070] In one embodiment, such as Figure 4 and Figure 5 As shown, the first adjustment component 31 includes a first blocking member 311, a first adapter 312 and a first pushing member 313. The first blocking member 311 is adapted to cover the first connecting portion 111 and is slidably disposed on the first housing 11. One end of the first adapter 312 is engaged with the first blocking member 311, and the other end of the first adapter 312 is connected to the first pushing member 313.

[0071] The combustion chamber of the adjustable air intake structure described above includes a first adjustment component 31 comprising a first blocking member 311, a first adapter 312, and a first pusher 313. In this embodiment, the first blocking member 311, the first adapter 312, and the first pusher 313 are respectively a first blocking block, a first adapter block, and a first pusher rod. The first blocking member 311 is slidably disposed on the first housing 11, covering the first connecting portion 111. One end of the first adapter 312 is engaged with the first blocking member 311, and the other end is connected to the first pusher 313. Thus, under the action of external force, the first pusher 313 can rotate and drive the first adapter 312 to rotate. The first adapter 312 can then drive the first blocking member 311 to slide on the first housing 11, thereby enabling the first blocking member 311 to open or close the first connecting portion 111 and allowing the first adjustment component 31 to have a first open state and a first closed state.

[0072] In one embodiment, such as Figure 6 and Figure 7 As shown, the second adjustment assembly 32 includes a second blocking member 321, a second adapter 322, and a second pusher 323. The second blocking member 321 is adapted to cover the second connecting portion 112 and is slidably disposed on the first housing 11. One end of the second adapter 322 is engaged with the second blocking member 321, and the other end of the second adapter 322 is connected to the second pusher 323.

[0073] The combustion chamber of the adjustable air intake structure described above includes a second adjustment component 32 comprising a second blocking member 321, a second adapter 322, and a second pusher 323. In this embodiment, the second blocking member 321, the second adapter 322, and the second pusher 323 are respectively a second blocking block, a second adapter block, and a second pusher rod. The second blocking member 321 is slidably disposed on the first housing 11, covering the second connecting portion 112. One end of the second adapter 322 is engaged with the second blocking member 321, and the other end is connected to the second pusher 323. Thus, under the action of external force, the second pusher 323 can rotate and drive the second adapter 322 to rotate. The second adapter 322 can then drive the second blocking member 321 to slide on the second housing 12, thereby enabling the second blocking member 321 to open or close the second connecting portion 112 and allowing the second adjustment component 32 to have a second open state and a second closed state.

[0074] In one embodiment, such as Figure 8As shown, the third regulating component 33 includes a valve body 331, a valve core 332, a third adapter 333, and a third pusher 334. The valve body 331 is disposed in the third opening 231, the valve core 332 is rotatably disposed in the valve body 331, one end of the third adapter 333 is connected to the valve core 332, and the other end of the third adapter 333 is connected to the third pusher 334.

[0075] The combustion chamber of the adjustable bleed air structure described above, by setting a third adjustment component 33 including a valve body 331, a valve core 332, a third adapter 333, and a third pusher 334, in this embodiment the third adapter 333 and the third pusher 334 are respectively a third adapter block and a third pusher rod. The valve body 331 is set inside the third opening 231, and the valve core 332 is rotatably set inside the valve body 331. One end of the third adapter 333 is connected to the valve core 332, and the other end is connected to the third pusher 334. Thus, under the action of external force, the third pusher 334 can rotate and drive the third adapter 333 to rotate. The third adapter 333 can then drive the valve core 332 to rotate inside the valve body 331, thereby enabling the valve core 332 to control the opening and closing of the valve body 331 and simultaneously control the opening and closing of the third opening 231.

[0076] In one embodiment, such as Figure 3 As shown, the air intake structure 2 includes a three-way connector 23 and a first air intake assembly 21 and a second air intake assembly 22 connected to the end of the three-way connector 23. A first opening is formed on the first air intake assembly 21, and the first air intake assembly 21 is adapted to cover the first connecting portion 111 and connect to the first housing 11. A second opening is formed on the second air intake assembly 22, and the second air intake assembly 22 is adapted to cover the second connecting portion 112 and connect to the first housing 11. The three-way connector 23 has a first end, a second end, and a third end. The first end is connected to the first air intake assembly 21, the second end is connected to the second air intake assembly 22, and the third opening 231 is formed on the third end, and the third end is adapted to connect to the engine. The first air intake assembly 21, the second air intake assembly 22, and the three-way connector 23 together form a communicating cavity.

[0077] The combustion chamber of the adjustable air intake structure described above includes an air intake structure 2 comprising a three-way connector 23 and a first air intake assembly 21 and a second air intake assembly 22 connected to the end of the three-way connector 23. A first opening is formed on the first air intake assembly 21, and the first air intake assembly 21 covers the first connecting portion 111 on the first housing 11, thereby allowing the first air intake assembly to communicate with the mounting cavity through the first opening and the first connecting portion 111. A second opening is formed on the second air intake assembly 22, and the second air intake assembly 22 covers the second connecting portion 112 on the first housing 11, thereby allowing the second air intake assembly 22 to communicate with the mounting cavity through the second opening and the second connecting portion 112.

[0078] In this embodiment, the three-way connector 23 is a three-way pipe. The three-way connector 23 has a first end, a second end, and a third end. The first end is connected to the first air intake assembly 21, and the second end is connected to the second air intake assembly 22, so that the three-way connector 23, the first air intake assembly 21, and the second air intake assembly 22 can become a whole and form a communicating cavity. In addition, the third opening 231 is opened on the third end, and the third end can be connected to the engine. Thus, the three-way connector 23 can communicate with the engine through the third opening 231.

[0079] In one embodiment, such as Figure 3 As shown, the first air intake assembly 21 includes a first air intake element 211 and a first connector 212. A first opening is formed at the end of the first air intake element 211, and the first air intake element 211 is adapted to cover the first connecting portion 111 and connect to the first housing 11. The two ends of the first connector 212 are respectively connected to the end of the first air intake element 211 away from the first opening and the first end. The second air intake assembly 22 includes a second air intake element 221 and a second connector 222. A second opening is formed at the end of the second air intake element 221, and the second air intake element 221 is adapted to cover the second connecting portion 112 and connect to the first housing 11. The two ends of the second connector 222 are respectively connected to the end of the second air intake element 221 away from the second opening and the second end.

[0080] The adjustable air intake structure of the combustion chamber described above, by setting a first air intake assembly 21 including a first air intake element 211 and a first connecting element 212, and setting a second air intake assembly 22 including a second air intake element 221 and a second connecting element 222, wherein the first air intake element 211 and the first connecting element 212 are respectively a first air intake ring pipe and a first connecting pipe in this embodiment, and the second air intake element 221 and the second connecting element 222 are respectively a second air intake ring pipe and a second connecting pipe in this embodiment, wherein the first air intake element 211 can cover the first connecting portion 111 and the first motor The first connecting member 212 is connected to the first air intake member 211 at one end away from the first opening and at the first end, respectively, thereby connecting the first air intake assembly 21 between the three-way member 23 and the first housing 11 and guiding the air intake; the second air intake member 221 can cover the second connecting portion 112 and is connected to the first housing 11, and the two ends of the second connecting member 222 are connected to the second air intake member 221 at one end away from the second opening and at the second end, respectively, thereby connecting the second air intake assembly 22 between the three-way member 23 and the first housing 11 and guiding the air intake.

[0081] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A combustion chamber with an adjustable bleed air structure, characterized in that, include: The casing structure (1) includes a first casing (11) and a second casing (12). The first casing (11) and the second casing (12) are connected to each other and together form an installation cavity. The first casing (11) is adapted to be connected to a compressor. The installation cavity is adapted to install a flame tube (4). The first casing (11) has a first connecting part (111) and a second connecting part (112) that communicate with the installation cavity. The first connecting part (111) and the second connecting part (112) are spaced apart. The air intake structure (2) has a communicating cavity, which has a first opening, a second opening and a third opening (231) spaced apart. The first opening is adapted to communicate with the first communicating part (111), the second opening is adapted to communicate with the second communicating part (112), and the third opening (231) is adapted to communicate with the engine. The adjustment structure includes a first adjustment component (31) and a second adjustment component (32). The first adjustment component (31) is adapted to cover the first connecting portion (111) disposed on the first housing (11), and the second adjustment component (32) is adapted to cover the second connecting portion (112) disposed on the first housing (11). Under the action of external force, the first adjustment component (31) has a first open state and a first closed state for opening or closing the first connecting portion (111), and the second adjustment component (32) has a second open state and a second closed state for opening or closing the second connecting portion (112).

2. The combustion chamber with an adjustable bleed air structure according to claim 1, characterized in that, The adjustment structure further includes a third adjustment component (33), which is disposed within the third opening (231). The third adjustment component (33) has a third connected state and a third closed state for opening or closing the third opening (231).

3. The combustion chamber with an adjustable bleed air structure according to claim 2, characterized in that, The adjustment structure has a non-air-drawing state in which the first adjustment component (31) is in a first closed state, the second adjustment component (32) is in a second closed state, and the third adjustment component (33) is in a third closed state.

4. The combustion chamber with an adjustable bleed air structure according to claim 3, characterized in that, The adjustment structure also has a main bleed state in which the first adjustment component (31) is in a first open state, the second adjustment component (32) is in a second closed state, and the third adjustment component (33) is in a third open state.

5. The combustion chamber with an adjustable bleed air structure according to claim 4, characterized in that, The adjustment structure also has a secondary air intake state in which the first adjustment component (31) is in a first closed state, the second adjustment component (32) is in a second open state, and the third adjustment component (33) is in a third open state.

6. The combustion chamber with an adjustable bleed air structure according to claim 5, characterized in that, The adjustment structure also has a full air intake state in which the first adjustment component (31) is in a first open state, the second adjustment component (32) is in a second open state, and the third adjustment component (33) is in a third open state.

7. The combustion chamber with an adjustable bleed air structure according to any one of claims 2-6, characterized in that, The first adjustment assembly (31) includes a first blocking member (311), a first adapter (312), and a first pusher (313). The first blocking member (311) is adapted to cover the first connecting portion (111) and is slidably disposed on the first housing (11). One end of the first adapter (312) is engaged with the first blocking member (311), and the other end of the first adapter (312) is connected to the first pusher (313).

8. The combustion chamber with an adjustable bleed air structure according to claim 7, characterized in that, The second adjustment assembly (32) includes a second blocking member (321), a second adapter (322), and a second pusher (323). The second blocking member (321) is adapted to cover the second connecting portion (112) and is slidably disposed on the first housing (11). One end of the second adapter (322) is engaged with the second blocking member (321), and the other end of the second adapter (322) is connected to the second pusher (323).

9. The combustion chamber with an adjustable bleed air structure according to claim 8, characterized in that, The third adjustment component (33) includes a valve body (331), a valve core (332), a third adapter (333), and a third pusher (334). The valve body (331) is disposed in the third opening (231), the valve core (332) is rotatably disposed in the valve body (331), one end of the third adapter (333) is connected to the valve core (332), and the other end of the third adapter (333) is connected to the third pusher (334).

10. The combustion chamber with an adjustable bleed air structure according to any one of claims 1-6, characterized in that, The air intake structure (2) includes a three-way connector (23) and a first air intake assembly (21) and a second air intake assembly (22) connected to the end of the three-way connector (23). The first opening is formed on the first air intake assembly (21), and the first air intake assembly (21) is adapted to cover the first connecting portion (111) and connect with the first housing (11). The second opening is formed on the second air intake assembly (22), and the second air intake assembly (22) is adapted to cover the second connecting portion (112) and connect with the first housing (11). The three-way connector (23) has a first end, a second end and a third end. The first end is connected to the first air intake assembly (21), the second end is connected to the second air intake assembly (22), the third opening (231) is opened on the third end, and the third end is adapted to be connected to the engine. The first air intake assembly (21), the second air intake assembly (22), and the three-way connector (23) together form the communicating cavity.

11. The combustion chamber with an adjustable bleed air structure according to claim 10, characterized in that, The first air intake assembly (21) includes a first air intake member (211) and a first connector (212). The first opening is formed at the end of the first air intake member (211), and the first air intake member (211) is adapted to cover the first connecting portion (111) and connect to the first casing (11). The two ends of the first connector (212) are respectively connected to the end of the first air intake member (211) away from the first opening and the first end. The second air intake assembly (22) includes a second air intake member (221) and a second connector (222). The second opening is opened at the end of the second air intake member (221), and the second air intake member (221) is adapted to cover the second communication portion (112) and connect to the first casing (11). The two ends of the second connector (222) are respectively connected to the end of the second air intake member (221) away from the second opening and the second end.

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