A hybrid oil-electric air generator

Abstract

The present invention provides a hybrid oil-electric air generator, comprising: a core machine having a power section compressor; a load compressor, the rotor of the load compressor being in transmission connection with the rotor of the power section compressor; an air intake pipe, the intake end of the air intake pipe being respectively communicated with the outlet of the power section compressor and the outlet of the load compressor; and a drive assembly in transmission connection with the load compressor. It overcomes the defect that the existing air generator cannot maintain a low fuel consumption rate while effectively increasing the output compressed air volume of the air generator, and has the advantages of a large external air output and a low overall fuel consumption.

Description

Technical Field

[0001] The present invention relates to the technical field of gas turbine engines, and particularly to a hybrid air generator with oil and electricity. Background Art

[0002] An air generator is an auxiliary power device that mainly outputs compressed air and shaft power. At present, it is mainly used as an auxiliary power device to meet the requirements of cold operation, false start, start, and environmental control air extraction of aero engines; it does not provide direct power for the flight of an aircraft and does not need to work with the main engine all the time during flight. Its essence belongs to a small gas turbine engine, and is mainly controlled by equal physical speed or equal corrected speed during operation.

[0003] At present, there are mainly two configurations for air generators: load compressor air extraction and core engine air extraction. The load compressor air extraction configuration uses a load compressor that is relatively independent of the core engine, that is, the core part of the small gas turbine engine, for air extraction. The load compressor is coaxially driven by the core engine of the air generator, and the pressure ratio of the compressor in the power section of its core engine can be set relatively high, but it only provides compressed air for the core engine itself. The core engine air extraction configuration has no load compressor and extracts air from the outlet of the core engine compressor. It has a compact structure, but the pressure ratio of the compressor is relatively low and the fuel economy is poor. In order to meet the development needs of future new distributed aero power devices, etc., using the air generator as the high-pressure air source of the distributed aero power device is a solution; the mass flow rate of the compressed air extracted needs to vary within a larger range, and the output of the compressed air flow will increase by an order of magnitude, the air extraction pressure will increase significantly, and the working time will also be longer. This makes it necessary to pay attention to how to reduce the fuel consumption rate of the air generator. In addition, the air generator is not suitable to use equal speed control anymore. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the prior art cannot maintain a low fuel consumption rate while effectively increasing the output compressed air volume of the air generator.

[0005] To solve the above technical problem, the present application provides a hybrid air generator with oil and electricity, which includes:

[0006] A core engine having a compressor in the power section;

[0007] A load compressor, the rotor of the load compressor is drivingly connected to the rotor of the compressor in the power section, and its output air extraction pressure is basically the same as that of the compressor in the power section;

[0008] An air extraction pipe, the inlet end of the air extraction pipe is respectively communicated with the outlet of the compressor in the power section and the outlet of the load compressor;

[0009] A driving assembly, which is drivingly connected to the load compressor.

[0010] Optionally, the drive assembly includes:

[0011] An electric motor, drivingly connected to the load compressor;

[0012] A generator, adapted to be drivingly connected to the load compressor;

[0013] A storage battery, the input end of the storage battery is connected to the generator, and the output end of the storage battery is connected to the electric motor.

[0014] Optionally, the drive assembly includes:

[0015] A combined generator and motor, the combined generator and motor is drivingly connected to the load compressor;

[0016] A storage battery, the input end of the storage battery is connected to the power supply end of the combined generator and motor, and the output end of the storage battery is connected to the power transmission end of the combined generator and motor.

[0017] Optionally, it further includes: a clutch, drivingly connected between the rotors of the load compressor and the power section compressor.

[0018] Optionally, the power section compressor has multiple stages of blades, and the connection port of the air inlet pipe to the power section compressor is located in the section between the multiple stages of blades or at the outlet of the power section compressor.

[0019] Optionally, an intake shut-off valve is provided at the inlet of the load compressor, and an outlet shut-off valve is provided at the outlet of the load compressor, and the opening degree of each shut-off valve is steplessly adjustable.

[0020] Optionally, the electric motor and the generator are a combined generator and motor.

[0021] Optionally, the combined generator and motor is connected to one end of the load compressor, and the clutch is connected to the other end of the load compressor.

[0022] Optionally, the combined generator and motor is coaxially arranged with the load compressor.

[0023] Optionally, the power section compressor and the load compressor are coaxially arranged.

[0024] Optionally, the load compressor is located at the intake end of the core engine.

[0025] By adopting the above technical solutions, the present invention has the following technical effects:

[0026] 1. The hybrid air generator provided by the present invention, due to adopting a fuel and electric hybrid power, can make the compressed air flow output by the generator larger, the electric power higher, and the fuel economy better under the same intake air flow of the generator.

[0027] 2. The hybrid oil-electric air generator provided by the present invention, when starting the air generator, since the motor connected to the storage battery is drivingly connected to the load compressor rotor, and the load compressor rotor is in turn drivingly connected to the power section compressor through a clutch, the power section compressor rotor can be driven by the motor to rotate when the clutch is engaged, so that the core engine starts to operate, and finally the air generator is started. Therefore, there is no need to set other starters, reducing the equipment cost.

[0028] 3. After the start-up of the hybrid oil-electric air generator provided by the present invention is completed, the generator can be selected to be connected to the load compressor rotor to charge the storage battery. The storage battery and the generator can also output electric power simultaneously, greatly improving its external power supply capacity.

[0029] 4. When the external air intake demand of the hybrid oil-electric air generator provided by the present invention decreases, the inlet guide vane angle of the load compressor can be closed, and the outlet stop valve of the load compressor can be closed to output compressed air with the power section compressor; or the clutch can be disengaged, so that only the power section compressor outputs compressed air. Selecting to output gas from the power section compressor is to increase the external air supply flow regulation range of the air generator.

[0030] 5. When the storage battery of the hybrid oil-electric air generator provided by the present invention is fully charged and the external gas consumption increases greatly, in addition to opening the outlet stop valve, the storage battery can also supply power to the motor, and the motor participates in driving the compression system of the air generator. Under the condition that the exhaust gas temperature of the core engine remains reasonable, the overall device can reach the limit peak air output. Its air supply volume is much higher than the scheme of supplying air externally by only using the power section compressor or the load compressor, and it is flexible and adaptable. Especially when designing a larger flow compressor to increase the air output, only the load compressor and the corresponding motor need to be considered separately, avoiding the need to make associated adaptation adjustments to the combustion chamber and gas turbine of the core engine, not only reducing the design difficulty, but also avoiding the problem of work mismatch between the components of the air generator caused by improper adjustment to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0032] Figure 1 It is a schematic structural diagram of an embodiment of the present invention;

[0033] Figure 2This is the working state diagram of the embodiment of the present invention under the condition of the minimum gas output and charging the battery.

[0034] Figure 3 This is the working state diagram of the embodiment of the present invention under the condition of the maximum gas output.

[0035] Explanation of the reference numerals:

[0036] 1 - Battery, 2 - Intake cut-off valve, 3 - Load compressor, 4 - Clutch, 5 - Power section compressor, 6 - Combustion chamber, 7 - Gas turbine, 8 - Outlet cut-off valve, 9 - Power generation and electric integration machine, 10 - Air intake pipe. Detailed implementation manners

[0037] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0038] It should be noted that in the description of the present invention, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0040] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0041] This embodiment provides an oil-electric hybrid air generator.

[0042] In one embodiment, as Figures 1 to 3As shown in the figure, it includes: a core engine, a load compressor 3, an air intake pipe 10 and a drive assembly. The core engine is a core component of a turbine engine that can consist of a power section compressor 5, a combustion chamber 6, a gas turbine 7, etc. The load compressor 3 is a compressor specifically designed to output compressed air, and its rotor is drivingly connected to the rotor of the power section compressor 5 through a clutch 4. The intake end of the air intake pipe 10 is respectively communicated with the outlet of the power section compressor 5 and the outlet of the load compressor 3. The drive assembly is drivingly connected to the load compressor 3.

[0043] This device jointly forms a hybrid drive for the load compressor 3 and the power section compressor 5 with the core engine through the drive assembly, and meets the external demand for a large air extraction flow rate by increasing the operating speed of the air generator. When the external demand for the high-pressure air flow rate is small, the operating speed of the air generator can be reduced; or the clutch 4 can be disengaged, and only the power section compressor 5 operates, so as to maintain a low fuel consumption rate while obtaining the required compressed air flow rate.

[0044] Based on the above embodiment, in a preferred embodiment, the drive assembly includes a motor, a generator and a storage battery 1. The motor is drivingly connected to the load compressor 3; the generator is adapted to be drivingly connected to the load compressor 3; for the storage battery 1, the input end of the storage battery 1 is connected to the generator, and the output end of the storage battery 1 is connected to the motor.

[0045] When starting the air generator, since the motor connected to the storage battery 1 is drivingly connected to the rotor of the load compressor 3, and the rotor of the load compressor 3 is drivingly connected to the power section compressor 5, the motor can be used to drive the rotor of the power section compressor 5 to rotate, so that the core engine starts to operate, and finally the air generator is started. Therefore, it does not need to be provided with other starters, reducing the equipment cost. After the air generator is started, the generator is selected to be connected to the rotor of the load compressor 3 to charge the storage battery 1. The storage battery 1 and the generator can also output electric power outward at the same time.

[0046] Based on the above embodiment, in a preferred embodiment, as Figures 1 to 3 shown, the drive assembly includes: a combined generator and motor 9 and a storage battery 1, the combined generator and motor 9 is drivingly connected to the load compressor 3; the input end of the storage battery 1 is connected to the power supply end of the combined generator and motor 9, and the output end of the storage battery 1 is connected to the power transmission end of the combined generator and motor 9. Using an integrated machine with combined power generation and electric functions can reduce the volume occupied by components and is beneficial to a more reasonable structural layout of the equipment.

[0047] Based on the above embodiment, in a preferred embodiment, as Figures 1 to 3As shown, an intake shut-off valve 2 is provided at the inlet of the load compressor 3; an outlet shut-off valve 8 is provided at the outlet of the load compressor 3. When the external bleed air demand decreases, such as Figure 2 As shown, it can also close the inlet guide vane angle of the load compressor 3 and close the outlet shut-off valve 8 of the load compressor, and output compressed air together with the power section compressor 5; or disengage the clutch 4, so that only the power section compressor 5 outputs compressed air. Selecting to output gas from the power section compressor 5 is to increase the external air supply flow regulation range of the air generator. The intake shut-off valve 2 can be closed together when the outlet shut-off valve 8 is closed, preventing foreign objects from entering the load compressor 3 when it is not working, and preventing the high-pressure bleed air of the power section compressor 5 from flowing back into the load compressor 3.

[0048] Preferably, a guide vane can also be provided at the inlet of the load compressor 3. When the external demand for high-pressure air flow is small, not only can the operating speed of the air generator be reduced, but also the guide vane angle of the load compressor 3 can be closed and the opening of the outlet shut-off valve 8 can be adjusted.

[0049] Based on the above-described embodiment, in a preferred embodiment, such as Figures 1 to 3 As shown, the clutch 4 is drivingly connected between the rotors of the load compressor 3 and the power section compressor 5.

[0050] When the battery 1 has sufficient power and the external gas consumption increases greatly, such as Figure 3 As shown, in addition to opening the outlet shut-off valve 8, the battery 1 can also supply power to the power generation and electric integration machine 9, and the power generation and electric integration machine 9 participates in driving the compression system of the air generator. Under the condition that the exhaust gas temperature of the core engine remains reasonable, the overall device can thus reach the limit peak gas output. Its gas supply is much higher than the scheme of using only the power section compressor 5 or the load compressor 3 to supply external air, and it is flexible and adaptable. Especially when designing a larger flow compressor to increase the gas output, only the load compressor and the corresponding motor need to be considered separately, avoiding the need to make associated adaptation adjustments to the combustion chamber and gas turbine of the core engine. This not only reduces the design difficulty, but also can avoid the problem of mismatched operation between the components of the air generator caused by improper adjustment to a certain extent.

[0051] Based on the above-described embodiment, in a preferred embodiment, the power section compressor 5 has multiple stages of blades, and the connection port of the air intake pipe 10 to the power section compressor 5 is located in the section between the multiple stages of blades, or at the outlet of the power section compressor 5. Specifically, Figure 1For the implementation manner, the power section compressor 5 has multiple stages of blades (3 stages are only for illustration), and the air intake pipe 10 is connected at a position near the air outlet end. Since the pressure ratio of the power section compressor 5 is relatively high, and in order to match the output bleed air pressure of the power section compressor 5 and the load compressor 3, the bleed air after the last stage of the power section compressor 5 will exceed the external required pressure by a large margin; therefore, bleeding air from the intermediate stage is adopted, which can not only adapt to the pressure requirements of external gas-using units, but also give play to the fuel economy brought by the high pressure ratio of the power section compressor 5, and reduce the overall engine fuel consumption. When high-pressure bleed air is required externally, bleed air can be taken from the outlet position of the power section compressor 5.

[0052] Based on the above implementation manner, in a preferred implementation manner, as Figures 1 to 3 shown, the integrated power generation and electric unit 9 is connected to one end of the load compressor 3, and the clutch 4 is connected to the other end of the load compressor 3. This layout structure is compact, and the installation of each component is convenient, which is beneficial to maintenance work.

[0053] Based on the above implementation manner, in a preferred implementation manner, as Figures 1 to 3 shown, the integrated power generation and electric unit 9 and the load compressor 3 are coaxially arranged. The coaxial arrangement can simplify the connection structure between the two, and reduce the size of the equipment in the radial direction, which is beneficial to the low-drag external shape design of the aircraft.

[0054] Based on the above implementation manner, in a preferred implementation manner, as Figures 1 to 3 shown, the power section compressor 5 and the load compressor 3 are coaxially arranged, that is, it is equivalent to the core engine and the load compressor 3 being coaxially arranged. As the main components of the air generator, the coaxial arrangement is more conducive to reducing the size of the device in the radial direction and reducing the wind resistance of the aircraft; and it is convenient for the installation and commissioning of the clutch 4 between the two.

[0055] Based on the above implementation manner, in a preferred implementation manner, as Figures 1 to 3 shown, the load compressor 3 is located at the air intake end of the core engine. This layout structure is beneficial to the exhaust arrangement of the core engine, and avoids the adverse effects caused by high-temperature gas when the load compressor 3 is located at the air outlet end.

[0056] Obviously, the above embodiments are only examples given for clear illustration, and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. An oil-electric hybrid air generator, characterized in that, Comprising: A core engine having a power section compressor (5); A load compressor (3), the rotor of the load compressor (3) being drivingly connected to the rotor of the power section compressor (5); An intake pipe (10), the intake end of the intake pipe (10) being respectively communicated with the outlet of the power section compressor (5) and the outlet of the load compressor (3); A drive assembly drivingly connected to the load compressor (3); A clutch (4) drivingly connected between the rotors of the load compressor (3) and the power section compressor (5); Wherein, the clutch (4) is used to disengage when the external demand for high-pressure air flow is small, so that only the power section compressor (5) is in the working state.

2. The air generator with a hybrid oil-electric power according to claim 1, characterized in that, The drive assembly includes: An electric motor drivingly connected to the load compressor (3); A generator adapted to be drivingly connected to the load compressor (3); A storage battery (1), the input end of the storage battery (1) being connected to the generator, and the output end of the storage battery (1) being connected to the electric motor.

3. The air generator with a hybrid fuel and electricity according to claim 1, characterized in that, The drive assembly includes: A combined generator and motor (9), the combined generator and motor (9) being drivingly connected to the load compressor (3); A storage battery (1), the input end of the storage battery (1) being connected to the power supply end of the combined generator and motor (9), and the output end of the storage battery (1) being connected to the power transmission end of the combined generator and motor (9).

4. An oil-electric hybrid air generator according to claim 3, characterized in that, The combined generator and motor (9) is connected to one end of the load compressor (3), and the clutch (4) is connected to the other end of the load compressor (3).

5. An oil-electric hybrid air generator according to any one of claims 1 to 4, characterized in that, The power section compressor (5) has multiple stages of blades, and the connection port of the intake pipe (10) to the power section compressor (5) is located in the section between the multiple stages of blades.

6. An oil-electric hybrid air generator according to any one of claims 1 to 4, characterized in that, An intake shut-off valve (2) is provided at the inlet of the load compressor (3), and an outlet shut-off valve (8) is provided at the outlet of the load compressor (3).

7. An oil-electric hybrid air generator according to claim 6, characterized in that, The combined generator and motor (9) is coaxially arranged with the load compressor (3).

8. An oil-electric hybrid air generator according to claim 7, characterized in that, The power section compressor (5) and the load compressor (3) are coaxially arranged.

9. The air generator with a hybrid fuel and electricity according to claim 8, wherein The load compressor (3) is located at the intake end of the core engine.

Images