Compressor radial air entraining device with adjustable drum hole flow area

Abstract

The invention discloses an air compressor radial air entraining device with the adjustable drum hole flow area, and belongs to the technical field of air compressor air entraining systems, the air compressor radial air entraining device comprises a rotating main shaft, the periphery of the rotating main shaft is sequentially sleeved with a first-stage movable disc, a drum and a second-stage movable disc, a plurality of air entraining through holes are formed in the peripheral face of the drum, and the air entraining through holes are communicated with the first-stage movable disc. A blocking piece is arranged in the drum, and the blocking piece can adjust the flow area of the drum. The device has the effect of adjusting the flow area of the drum.

Description

Technical Field

[0001] This application relates to the technical field of compressor bleed air systems, and in particular to a compressor radial bleed air device with adjustable drum orifice flow area. Background Technology

[0002] The compressor bleed air system of an aero-engine refers to the cooling air drawn out from the high radius position between two stages of the high-pressure compressor, flowing radially inward through the drum holes on the compressor disc, in the common rotating disc cavity between the upstream and downstream compressor discs, turning at the low radius to the inter-shaft channel between the compressor disc and the high-pressure rotating shaft, and then leading to the hot end components at the rear of the aero-engine to provide thermal protection for the hot end components.

[0003] When an aircraft is maneuvering and needs to accelerate and increase thrust, the fuel supply to the aero-engine increases, resulting in increased thrust and a rapid rise in turbine inlet temperature. This exacerbates the intrusion of combustion gases into the turbine disk cavity, causing significant damage to the turbine disk due to the high-temperature gases. The turbine disk itself operates in a very harsh environment; the high-speed rotation of the aero-engine subjects it to substantial centrifugal loads from itself and the turbine blades. Combined with the corrosive effects of the high-temperature gases, this severely impacts the normal operation and lifespan of the turbine disk, significantly affecting the safety and reliability of the aero-engine. To address this, a greater flow of cooling air is needed to provide thermal protection for the hot-end components.

[0004] However, the bleed air structure of current aero engines is unique, and the flow rate of cold air directed to the hot-end components at the rear of the aero engine cannot be changed according to the real-time operating status of the aero engine, so it is impossible to provide a larger flow rate of cold air instantaneously to provide thermal protection for the hot-end components. Summary of the Invention

[0005] To address the issue of the inability to change the cold air flow rate in the bleed air structure of an aero-engine, this application provides a compressor radial bleed air device with an adjustable drum orifice flow area.

[0006] The radial air evacuation device for a compressor with adjustable drum orifice flow area provided in this application adopts the following technical solution: A radial air intake device for a compressor with adjustable drum orifice flow area includes a rotating main shaft. A primary moving plate, a drum, and a secondary moving plate are sequentially sleeved on the outer periphery of the rotating main shaft. A plurality of air intake holes are opened on the outer periphery of the drum. A sealing element is provided inside the drum, and the sealing element can adjust the flow area of ​​the drum.

[0007] By adopting the above technical solution, cooling air flows through several bleed air passages on the drum. The total cross-sectional area of ​​these passages is the maximum flow area of ​​the drum. By installing a sealing component, the bleed air passages can be blocked, thereby adjusting the flow area of ​​the drum. When the engine is in cruise mode, the flow area of ​​the drum is reduced by the sealing component to avoid excessive bleed air flow and waste. When the engine operating state changes, the turbine inlet temperature rises rapidly. The flow area of ​​the drum holes is increased by the sealing component, which rapidly increases the bleed air flow to meet the thermal protection requirements of the hot-end components and achieve protection of the hot-end components.

[0008] Preferably, the sealing component includes an upper retaining ring located inside the drum, the outer diameter of the upper retaining ring being equal to the inner diameter of the drum, and the outer circumferential surface of the upper retaining ring having a plurality of connecting through holes I, the number of the connecting through holes I being less than the number of the air duct through holes, the connecting through holes I being able to coincide with the adjacent air duct through holes, and the secondary moving plate being provided with a driving component for driving the upper retaining ring to move axially along the rotating main shaft.

[0009] By adopting the above technical solution, the upper retaining ring is displaced along the axial direction of the rotating main shaft by the driving component. When the connecting through hole of the upper retaining ring does not coincide with the adjacent air duct, the flow area of ​​the drum does not change. When the connecting through hole of the upper retaining ring coincides with the adjacent air duct, the upper retaining ring blocks the other air ducts, and the flow area of ​​the drum is the flow area of ​​the upper retaining ring, thereby realizing the adjustment of the flow area of ​​the drum.

[0010] Preferably, the driving component includes two electromagnetic actuators fixed to the back of the secondary moving disk. The two electromagnetic actuators are symmetrically arranged 180° apart along the circumference of the secondary moving disk. The push rod of the electromagnetic actuator is fixedly connected to the end face of the upper retaining ring. The side of the secondary moving disk is provided with a clearance through hole for the push rod of the electromagnetic actuator to pass through.

[0011] By adopting the above technical solution, when the electromagnetic actuator is energized, the push rod of the electromagnetic actuator moves the upper retaining ring toward the direction closer to the drum, so that the connecting through hole of the upper retaining ring coincides with the adjacent air intake through hole; when the electromagnetic actuator is de-energized, the push rod of the electromagnetic actuator moves the upper retaining ring back to its original position, releasing the upper retaining ring from blocking the air intake through hole of the drum.

[0012] Preferably, the upper retaining ring has two symmetrically arranged guide rods fixed on its end face near the secondary moving disk, and the side of the secondary moving disk has a guide through hole for inserting the guide rods.

[0013] By adopting the above technical solution, the guide rod slides with the secondary moving disk along the circumference of the rotating main shaft through the guide through hole, so that the upper retaining ring always moves along the axial direction of the rotating main shaft.

[0014] Preferably, the sealing component further includes a lower retaining ring located inside the drum. The inner diameter of the upper retaining ring is equal to the outer diameter of the lower retaining ring. The outer circumferential surface of the lower retaining ring is provided with a plurality of connecting through holes II. The number of connecting through holes II is less than the number of connecting through holes I. The connecting through holes II can coincide with the adjacent connecting through holes I. Two symmetrically arranged electromagnetic actuators II are fixed on the back of the secondary moving disk. The push rod of the electromagnetic actuator II is fixedly connected to the end face of the lower retaining ring. The side of the secondary moving disk is provided with clearance through holes II for the push rod of the electromagnetic actuator II to pass through. The electromagnetic actuator I and the electromagnetic actuator II are arranged at equal intervals along the circumference of the secondary moving disk. Two symmetrically arranged guide rods II are fixed on the end face of the lower retaining ring near the secondary moving disk. The side of the secondary moving disk is provided with guide through holes II for inserting the guide rods II.

[0015] By adopting the above technical solution, when neither electromagnetic actuator one nor electromagnetic actuator two is energized, the flow area of ​​the drum remains unchanged; when electromagnetic actuator one is energized and electromagnetic actuator two is de-energized, the flow area of ​​the drum is equal to the flow area of ​​the upper baffle ring; when both electromagnetic actuator one and electromagnetic actuator two are energized, the connecting through hole one of the upper baffle ring coincides with the air duct through hole of the adjacent drum, and the connecting through hole two of the lower baffle ring coincides with the connecting through hole one of the adjacent upper baffle ring. The lower baffle ring blocks the remaining connecting through hole one of the upper baffle ring, so that the flow area of ​​the drum is equal to the flow area of ​​the lower baffle ring. By controlling the opening and closing of electromagnetic actuator one and electromagnetic actuator two, the drum can achieve three different flow areas.

[0016] Preferably, a protective box is installed on the outer periphery of both the first electromagnetic actuator and the second electromagnetic actuator. The protective box is fixedly connected to the secondary moving plate, and a wiring hole for wiring is provided on the side of the protective box.

[0017] By adopting the above technical solution, the electromagnetic actuator one and electromagnetic actuator two can be wrapped and fixed on the surface of the secondary moving plate using the protective box, so that electromagnetic actuator one and electromagnetic actuator two are stably connected to the secondary moving plate. The protective box also has corresponding wiring holes to meet the wiring problem of electromagnetic actuator one and electromagnetic actuator two, and to achieve stable power supply for electromagnetic actuator one and electromagnetic actuator two.

[0018] Preferably, it also includes a control unit, which includes a control unit and a temperature sensor disposed at the hot end of the engine. The temperature sensor is used to collect temperature signals at the hot end of the engine, and the control unit is used to analyze the temperature signals and control the power supply of the first electromagnetic actuator and the second electromagnetic actuator.

[0019] By adopting the above technical solution, the temperature sensor can collect the temperature signal of the hot end of the engine. After receiving the temperature signal, the control unit controls the on and off of the electromagnetic actuator one and electromagnetic actuator two according to the temperature level, thereby controlling the movement of the upper and lower retaining rings and adjusting the flow area of ​​the drum.

[0020] Preferably, the sealing component includes a sealing ring rotatably mounted inside the drum. The outer circumferential surface of the sealing ring has a plurality of sealing holes, the number of which is the same as the number of air ducts. The sealing holes can coincide with adjacent air ducts. An internal gear ring is fixed on the inner circumferential surface of the sealing ring. Two symmetrically arranged mounting rings are fixed on the side of the secondary moving disk near the drum. Gears are rotatably mounted on the end face of the mounting rings. The gears mesh with the internal gear rings. A rotating component for driving the gears to rotate is provided on the secondary moving disk.

[0021] By adopting the above technical solution, the rotating component drives the gear to rotate, the gear drives the internal gear ring to rotate, and the internal gear ring drives the sealing ring to rotate. During the rotation of the sealing ring, the overlapping area of ​​the sealing hole and the air passage changes, thereby adjusting the flow area of ​​the drum.

[0022] Preferably, the rotating component includes a driving block, a driving square groove is provided on the side of the secondary moving disk, the driving block slides and engages with the secondary moving disk along the axial direction of the secondary moving disk through the driving square groove, a motor is fixed to the back of the secondary moving disk, a screw is coaxially fixed to the output end of the motor, a threaded groove for inserting the screw is provided on the side of the driving block, the screw is threadedly engaged with the driving block, a driving rod is fixed to the side of the driving block, a gear is sleeved on the outer periphery of the driving rod, a spiral groove is provided on the outer periphery of the driving rod, a slider is fixed to the inner circumferential surface of the gear, and the slider slides and engages with the driving rod through the spiral groove.

[0023] By adopting the above technical solution, the motor is started, the motor drives the screw to rotate, the screw drives the drive block to slide in the drive square groove, the drive block drives the drive rod to move, and the drive rod drives the gear to rotate through the slider and the spiral groove.

[0024] In summary, this application includes at least one of the following beneficial technical effects: Cooling air flows through several bleed air passages on the drum. The total cross-sectional area of ​​these passages is the maximum flow area of ​​the drum. By installing sealing components, the bleed air passages can be blocked, thereby adjusting the flow area of ​​the drum. When the engine is in cruising mode, the flow area of ​​the drum is reduced by the sealing components to avoid excessive bleed air flow and waste. When the engine operating state changes, the turbine inlet temperature rises rapidly. The flow area of ​​the drum holes is increased by the sealing components, which rapidly increases the bleed air flow to meet the thermal protection requirements of the hot-end components and achieve protection of the hot-end components. The upper retaining ring is displaced along the axial direction of the rotating main shaft by a driving component. When the connecting through hole of the upper retaining ring does not coincide with the adjacent air duct, the flow area of ​​the drum does not change. When the connecting through hole of the upper retaining ring coincides with the adjacent air duct, the upper retaining ring blocks the other air ducts, and the flow area of ​​the drum becomes the flow area of ​​the upper retaining ring, thereby achieving the adjustment of the flow area of ​​the drum. When neither electromagnetic actuator one nor electromagnetic actuator two is energized, the flow area of ​​the drum remains unchanged. When electromagnetic actuator one is energized and electromagnetic actuator two is de-energized, the flow area of ​​the drum is equal to the flow area of ​​the upper retaining ring. When both electromagnetic actuator one and electromagnetic actuator two are energized, the connecting through hole one of the upper retaining ring coincides with the air duct through hole of the adjacent drum, and the connecting through hole two of the lower retaining ring coincides with the connecting through hole one of the adjacent upper retaining ring. The lower retaining ring blocks the remaining connecting through hole one of the upper retaining ring, so that the flow area of ​​the drum is equal to the flow area of ​​the lower retaining ring. By controlling the opening and closing of electromagnetic actuator one and electromagnetic actuator two, the drum can achieve three different flow areas. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this application.

[0026] Figure 2 This is a schematic diagram of the back structure of the secondary moving disk in Embodiment 1 of this application.

[0027] Figure 3 This is a schematic diagram of the sealing component in Embodiment 1 of this application.

[0028] Figure 4 This is a schematic diagram of the structure of electromagnetic actuation device one and electromagnetic actuation device two in Embodiment 1 of this application.

[0029] Figure 5 This is a schematic diagram of the upper and lower retaining rings in Embodiment 1 of this application.

[0030] Figure 6 This is a schematic diagram of the sealing component in Embodiment 2 of this application.

[0031] Figure 7 yes Figure 6 Enlarged diagram of point A in the middle.

[0032] Figure 8 This is a cross-sectional view of the mounting ring and drive block in Embodiment 2 of this application.

[0033] Reference numerals: 1. Rotating spindle; 11. First-stage moving disc; 12. Drum; 121. Air vent; 13. Second-stage moving disc; 2. Sealing component; 21. Upper retaining ring; 211. Connecting through hole one; 22. Lower retaining ring; 221. Connecting through hole two; 23. Sealing ring; 231. Sealing hole; 3. Electromagnetic actuation device one; 31. Clearance through hole one; 32. Guide rod one; 33. Guide through hole one; 34. Protective box; 35. Wiring hole; 4. Electromagnetic actuation device two; 41. Clearance through hole two; 42. Guide rod two; 43. Guide through hole two; 5. Internal gear ring; 51. Mounting ring; 52. Gear; 521. Slider; 53. Drive square groove; 54. Drive block; 541. Threaded groove; 55. Motor; 56. Screw; 57. Drive rod; 571. Spiral groove. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0035] This application discloses a radial air intake device for a compressor with an adjustable drum orifice flow area.

[0036] Example 1 Reference Figure 1 , Figure 2 and Figure 3 The radial air evacuation device for a compressor with adjustable drum orifice flow area includes a rotating main shaft 1. A primary moving plate 11, a drum 12, and a secondary moving plate 13 are sequentially mounted on the outer circumference of the rotating main shaft 1. Twenty air evacuation holes 121 are formed on the outer circumferential surface of the drum 12, and these 20 holes are evenly spaced along the circumference of the drum 12. A sealing element 2 is installed inside the drum 12, and the sealing element 2 can adjust the flow area of ​​the drum 12.

[0037] Reference Figure 3 The sealing component 2 includes an upper retaining ring 21 and a lower retaining ring 22 located inside the drum 12. The outer diameter of the upper retaining ring 21 is equal to the inner diameter of the drum 12, and the inner diameter of the upper retaining ring 21 is equal to the outer diameter of the lower retaining ring 22. The outer circumferential surface of the upper retaining ring 21 has 15 connecting through holes 211, divided into five groups of three equally spaced connecting through holes 211 in each group. The 15 connecting through holes 211 can overlap with adjacent air venting holes 121. The outer circumferential surface of the lower retaining ring 22 has 10 connecting through holes 221, equally spaced along the circumference of the drum 12. The connecting through holes 221 can overlap with adjacent connecting through holes 211.

[0038] Reference Figure 4 and Figure 5 Two electromagnetic actuators 3 are fixed to the back of the secondary moving plate 13, and the two electromagnetic actuators 3 are symmetrically arranged 180° apart along the circumference of the secondary moving plate 13. The push rod of the electromagnetic actuator 3 is fixedly connected to the end face of the upper retaining ring 21, and the side of the secondary moving plate 13 has a clearance through hole 31 for the push rod of the electromagnetic actuator 3 to pass through. Two symmetrically arranged guide rods 32 are fixed to the end face of the upper retaining ring 21 near the secondary moving plate 13, and the side of the secondary moving plate 13 has a guide through hole 33 for inserting the guide rods 32.

[0039] Reference Figure 4 and Figure 5 Two electromagnetic actuators 4 are fixed to the back of the secondary moving plate 13. These two actuators 4 are symmetrically arranged at 180° intervals along the circumference of the secondary moving plate 13. Electromagnetic actuators 3 and 4 are equally spaced along the circumference of the secondary moving plate 13. The push rod of the electromagnetic actuator 4 is fixedly connected to the end face of the lower retaining ring 22. A clearance through hole 41 for the push rod of the electromagnetic actuator 4 is provided on the side of the secondary moving plate 13. Two symmetrically arranged guide rods 42 are fixed to the end face of the lower retaining ring 22 near the secondary moving plate 13. A guide through hole 43 for inserting the guide rods 42 is provided on the side of the secondary moving plate 13. Protective boxes 34 are installed on the outer periphery of both the electromagnetic actuator 3 and the electromagnetic actuator 4. The protective boxes 34 are fixedly connected to the secondary moving plate 13. Wiring holes 35 for wiring are provided on the side of the protective boxes 34.

[0040] When neither electromagnetic actuator 3 nor electromagnetic actuator 4 is energized, the flow area of ​​the drum 12 remains unchanged. When electromagnetic actuator 3 is energized and electromagnetic actuator 4 is de-energized, the flow area of ​​the drum 12 is equal to three-quarters of the area of ​​all air intake holes 121. When both electromagnetic actuator 3 and electromagnetic actuator 4 are energized, the connecting hole 211 of the upper baffle ring 21 coincides with the air intake hole 121 of the adjacent drum 12, and the connecting hole 221 of the lower baffle ring 22 coincides with the connecting hole 211 of the adjacent upper baffle ring 21. The lower baffle ring 22 blocks the remaining connecting hole 211 of the upper baffle ring 21, so that the flow area of ​​the drum 12 is equal to half of the area of ​​all air intake holes 121. By controlling the opening and closing of electromagnetic actuator 3 and electromagnetic actuator 4, the drum 12 can achieve three different flow areas.

[0041] Reference Figure 1 and Figure 4The compressor radial air intake device with adjustable drum orifice flow area also includes a control unit. The control unit includes a control unit and a temperature sensor located at the hot end of the engine. The temperature sensor is used to collect the temperature signal at the hot end of the engine. The control unit is used to analyze the temperature signal and control the on / off power of electromagnetic actuator 3 and electromagnetic actuator 4.

[0042] The implementation principle of Embodiment 1 of this application is as follows: Cooling air flows through a plurality of bleed air passages 121 on the drum 12. The total cross-sectional area of ​​the plurality of bleed air passages 121 is the maximum flow area of ​​the drum 12. By setting the sealing component 2, the bleed air passages 121 can be blocked, thereby adjusting the flow area of ​​the drum 12. When the engine is in cruising state, the flow area of ​​the drum 12 is reduced by the sealing component 2 to avoid excessive bleed air flow and waste of bleed air. When the engine operating state changes, the turbine inlet temperature rises rapidly. The flow area of ​​the drum 12 holes is increased by the sealing component 2, and the bleed air flow is rapidly increased to meet the thermal protection requirements of the hot end components, thereby protecting the hot end components.

[0043] Example 2 Reference Figure 6 and Figure 7 The difference between this embodiment and Embodiment 1 is that the sealing component 2 includes a sealing ring 23 rotatably mounted inside the drum 12, and the outer circumferential surface of the sealing ring 23 has a plurality of sealing holes 231. The number of sealing holes 231 is the same as the number of air ducts 121, and the sealing holes 231 can coincide with adjacent air ducts 121. An internal gear ring 5 is fixed on the inner circumferential surface of the sealing ring 23, and two symmetrically arranged mounting rings 51 are fixed on the side of the secondary moving disc 13 near the drum 12. A gear 52 is rotatably mounted on the end face of the mounting ring 51, and the gear 52 meshes with the internal gear ring 5.

[0044] Reference Figure 7 and Figure 8 The secondary moving plate 13 has a drive square groove 53 on its side, through which a drive block 54 is slidably mounted along its own axis. A motor 55 is fixed to the back of the secondary moving plate 13, and a screw 56 is coaxially fixed to the output end of the motor 55. A threaded groove 541 for inserting the screw 56 is provided on the side of the drive block 54, and the screw 56 and drive block 54 are threadedly engaged. A drive rod 57 is fixed to the side of the drive block 54, and a gear 52 is sleeved on the outer circumference of the drive rod 57. A spiral groove 571 is provided on the outer circumference of the drive rod 57, and a slider 521 is fixed to the inner circumference of the gear 52, slidingly engaging with the drive rod 57 through the spiral groove 571.

[0045] The implementation principle of Embodiment 2 of this application is as follows: The motor 55 is started, which drives the screw 56 to rotate. The screw 56 drives the drive block 54 to slide within the drive square groove 53. The drive block 54 drives the drive rod 57 to move. The drive rod 57 drives the gear 52 to rotate via the slider 521 and the spiral groove 571. The gear 52 drives the internal gear ring 5 to rotate, which in turn drives the sealing ring 23 to rotate. During the rotation of the sealing ring 23, the overlapping area of ​​the sealing hole 231 and the air vent 121 changes, thereby adjusting the flow area of ​​the drum 12.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A radial bleed air device for a compressor with adjustable flow area of the drum hole, characterized in that: The application relates to a rotating main shaft (1), which is sequentially sleeved with a primary moving disc (11), a drum (12) and a secondary moving disc (13) in sequence, the outer circumferential surface of the drum (12) is provided with a plurality of air guide through holes (121), and the drum (12) is provided with a blocking piece (2) inside.

2. A radial compressor bleed air device with adjustable flow area of the drum bore according to claim 1, characterized in that The blocking piece (2) comprises an upper blocking ring (21) located in the drum (12), the outer diameter of the upper blocking ring (21) is equal to the inner diameter of the drum (12), the outer circumferential surface of the upper blocking ring (21) is provided with a plurality of connecting through holes (211), the number of the connecting through holes (211) is less than that of the air guide through holes (121), the connecting through holes (211) can coincide with adjacent air guide through holes (121), and the secondary moving disc (13) is provided with a driving piece for driving the upper blocking ring (21) to move along the axial direction of the rotating main shaft (1).

3. A radial compressor bleed air device with adjustable flow area of the drum bore according to claim 2, characterized in that The driving piece comprises two electromagnetic actuators (3) fixed to the back of the secondary moving disc (13), the two electromagnetic actuators (3) are symmetrically arranged at an interval of 180 degrees along the circumferential direction of the secondary moving disc (13), the push rod of the electromagnetic actuator (3) is fixedly connected with the end surface of the upper blocking ring (21), and the side surface of the secondary moving disc (13) is provided with a first accommodation through hole (31) for penetrating the push rod of the electromagnetic actuator (3).

4. A radial compressor bleed air guide device with adjustable flow area of the drum bore according to claim 3, characterized in that The end surface of the upper blocking ring (21) close to the secondary moving disc (13) is fixedly connected with two symmetrically arranged guide rods (32), and the side surface of the secondary moving disc (13) is provided with a guide through hole (33) for inserting the guide rod (32).

5. A radial compressor bleed air device with adjustable flow area of the drum bore according to claim 3, characterized in that The blocking piece (2) further comprises a lower blocking ring (22) located in the drum (12), the inner diameter of the upper blocking ring (21) is equal to the outer diameter of the lower blocking ring (22), the outer circumferential surface of the lower blocking ring (22) is provided with a plurality of connecting through holes (221), the number of the connecting through holes (221) is less than that of the connecting through holes (211), the connecting through holes (221) can coincide with adjacent connecting through holes (211), the back of the secondary moving disc (13) is fixedly connected with two symmetrically arranged electromagnetic actuators (4), the push rod of the electromagnetic actuator (4) is fixedly connected with the end surface of the lower blocking ring (22), the side surface of the secondary moving disc (13) is provided with a second accommodation through hole (41) for penetrating the push rod of the electromagnetic actuator (4), the electromagnetic actuators (3) and the electromagnetic actuators (4) are equally spaced along the circumferential direction of the secondary moving disc (13), the end surface of the lower blocking ring (22) close to the secondary moving disc (13) is fixedly connected with two symmetrically arranged guide rods (42), and the side surface of the secondary moving disc (13) is provided with a guide through hole (43) for inserting the guide rod (42).

6. A radial compressor bleed air device with adjustable flow area of the drum bore according to claim 5, characterized in that The outer periphery of the electromagnetic actuator one (3) and the outer periphery of the electromagnetic actuator two (4) are provided with protective boxes (34), the protective boxes (34) are fixedly connected with the secondary moving disc (13), and the side surface of the protective box (34) is provided with a wiring hole (35) for penetrating wiring.

7. A radial compressor bleed air device with adjustable flow area of the drum bore according to claim 5, characterized in that The control unit is further provided with a temperature sensor arranged at the hot end of the engine, the temperature sensor is used for collecting a temperature signal of the hot end of the engine, and the control unit is used for analyzing the temperature signal and controlling the on-off electricity of the electromagnetic actuator one (3) and the electromagnetic actuator two (4).

8. A radial compressor bleed air device with adjustable flow area of the drum bore according to claim 1, characterized in that: The blocking piece (2) comprises a blocking ring (23) rotatably arranged in the drum (12), a plurality of blocking holes (231) are arranged on the outer circumferential surface of the blocking ring (23), the number of the blocking holes (231) is the same as that of the bleed air through holes (121), the blocking holes (231) can coincide with adjacent bleed air through holes (121), an inner gear ring (5) is fixed to the inner circumferal surface of the blocking ring (23), two symmetrically arranged mounting rings (51) are fixed to the side surface of the secondary moving disc (13) close to the drum (12), a gear (52) is rotatably arranged on the end surface of the mounting ring (51), the gear (52) is in meshing connection with the inner gear ring (5), and a rotating member for driving the gear (52) to rotate is arranged on the secondary moving disc (13).

9. A radial compressor bleed air device with adjustable flow area of the drum bore according to claim 8, characterized in that The rotating member comprises a driving block (54), a driving square groove (53) is arranged on the side surface of the secondary moving disc (13), the driving block (54) is in sliding fit with the secondary moving disc (13) in the axial direction of the secondary moving disc (13) through the driving square groove (53), a motor (55) is fixed to the back surface of the secondary moving disc (13), a screw rod (56) is coaxially fixed to the output end of the motor (55), a threaded groove (541) for inserting the screw rod (56) is arranged on the side surface of the driving block (54), the screw rod (56) is in threaded transmission fit with the driving block (54), a driving rod (57) is fixed to the side surface of the driving block (54), the gear (52) is sleeved on the outer periphery of the driving rod (57), a spiral groove (571) is arranged on the outer periphery of the driving rod (57), a sliding block (521) is fixed to the inner circumferal surface of the gear (52), and the sliding block (521) is in sliding fit with the driving rod (57) through the spiral groove (571).

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