Airflow-impact-resistant control valve for aircraft bleed air pre-cooler

Abstract

This invention belongs to the field of control valve technology and discloses a control valve for an aircraft bleed air precooler that resists airflow impact. It includes a controller, a guide valve body mounted on the controller, and a valve core assembly disposed inside the guide valve body. This invention achieves a sealing effect by using a valve core body with an outer diameter smaller than the inner diameter of the guide valve body and compressing the support clip. This avoids long-term metal-to-metal friction between the valve core body and the guide valve body, preventing the gradual occurrence of adhesive wear, abrasive wear, and other combined wear phenomena. Furthermore, it prevents multiple failures caused by wear exceeding the allowable tolerance range over service life. It also avoids incomplete closure due to deterioration of the geometric sealing surface tolerances, which could lead to increased internal leakage. This ensures pressure regulation accuracy, prevents chain reactions such as system pressure oscillations or control failures, improves the service life of the control valve, and guarantees system stability and safety.

Description

Technical Field

[0001] This invention belongs to the field of control valve technology, specifically a control valve for an aircraft bleed air precooler that is resistant to airflow impact. Background Technology

[0002] The precooler control valve (PCCV) is the core control component of the engine bleed air precooler system, forming the cooling system together with the precooler, 390-degree temperature sensor, and signal piping. As a key component of the aircraft bleed air system, its main function is to control the cooling intensity of the hot bleed air by adjusting the flow rate of the cooling medium (fan air). The larger the valve opening, the more cold air flows through the precooler, the stronger the heat exchange effect, and the lower the bleed air temperature.

[0003] As a key fluid control component, the precooler control valve's core structure consists of a high-precision matched valve body and valve core. The valve core's rotation within the valve body cavity regulates the opening and closing of the media passage. During dynamic operation, the valve core and valve body employ a metal hard seal design to ensure sealing reliability under high temperature and pressure conditions. While this rigid contact method can withstand large pressure differentials, it inevitably leads to continuous frictional wear. When the system operates at high frequency, the contact surfaces experience repeated sliding friction, resulting in a combination of adhesive wear and abrasive wear. With accumulated service time, wear exceeding the allowable tolerance range will trigger multiple failures. First, deterioration of the geometric sealing surface's form and position tolerances causes incomplete closure, increasing media leakage. Second, the widening of the dynamic sealing gap reduces pressure regulation accuracy. More seriously, it may trigger a chain reaction of system pressure oscillations or control failures. This progressive wear process significantly reduces the valve's service life, affecting system stability and safety. Therefore, a precooler control valve for aircraft bleed air that resists airflow impact is proposed. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a control valve for an aircraft bleed air precooler that is resistant to airflow impact. This solves the problem that existing precooler control valves employ a metal hard-seal design, with high-precision matching between the valve core and body, and adjust the medium passage through rotational motion. Under high-frequency opening and closing conditions, rigid contact leads to adhesive and abrasive wear, which, over time, causes seal failure, increased internal leakage, decreased adjustment accuracy, and even system pressure oscillations, severely impacting lifespan and safety.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a control valve for an aircraft bleed air precooler resistant to airflow impact, comprising a control device, an air guide valve body mounted on the control device, and further comprising:

[0006] A valve core assembly is disposed inside the air guide valve body, and the air guide valve body is opened and closed by the movement of the valve core assembly driven by a controller.

[0007] Two stabilizing components are symmetrically arranged on the outside of the air valve body;

[0008] The valve core assembly includes a valve core body disposed inside the air guide valve body, wherein the outer diameter of the valve core body is smaller than the inner diameter of the air guide valve body;

[0009] The stabilizing component includes a fixed cover that is fixed to the outside of the air guide valve body, and the inside of the fixed cover is provided with a sliding groove that communicates with the inside of the air guide valve body;

[0010] A support truss is movably arranged inside the chute, and a support clip is fixedly installed at the bottom of the support truss. A C-shaped seal is provided on the inner wall of the support clip.

[0011] Preferably, initially, the support truss, support clip, and C-shaped seal are located within the groove;

[0012] When the controller drives the valve core body to rotate 90° to a vertical position to block the air guide valve body, the support truss, support clip and C-shaped seal move toward the valve core body and engage with the outer peripheral surface of the valve core body;

[0013] Conversely, the supporting truss, supporting clips, and C-shaped seals move in opposite directions to disengage from the valve core body, and the valve core body rotates 90° in the opposite direction to disengage from the sealing air valve body.

[0014] Preferably, the inner wall of the support clip is provided with an arc-shaped groove, and the spacing of the arc-shaped groove gradually decreases from the inner circle to the outer circle;

[0015] The stabilizing component moves toward the outer peripheral surface of the valve core body, the supporting clip engages with the outside of the valve core body, and the C-shaped seal abuts against the outer peripheral surface of the valve core body.

[0016] Preferably, a driving component is provided on the top of the fixed cover, and the output end of the driving component is fixedly connected to the support truss. The driving component drives the support truss, support clip and C-shaped seal to slide in the groove.

[0017] Preferably, the inner wall of the support clip is fixed with two stabilizing clamps, and the cross-sections of the opposite ends of the two stabilizing clamps are in the shape of an "eight".

[0018] The supporting truss, supporting clips, and C-shaped seals are guided downwards through the inner wall of the stabilizing clamp, so that the opposite surfaces of the stabilizing clamp fit against the outside of the valve core body.

[0019] Preferably, a support core column is fixedly installed in the middle of the valve core body, and a first support block and a second support block are symmetrically arranged on the inner wall of the air guide valve body. The valve core body is disposed inside the air guide valve body through the support core column, the first support block and the second support block.

[0020] Preferably, when the two stabilizing components move relative to each other, the ends of the two supporting trusses respectively abut against the outside of the first supporting block and the second supporting block.

[0021] Preferably, the end of the support core column located inside the second support block is provided with a stabilizing groove, and the second support block is provided with a guide groove with the same thickness as the stabilizing groove.

[0022] Preferably, a C-shaped stabilizing clip is slidably disposed inside the guide groove, and a mating lug is fixedly installed at the end of the support truss;

[0023] The end of the C-shaped stabilizing clip is hinged to the mating lug via a connecting transmission rod.

[0024] Preferably, when the valve core body rotates 90° to put the air valve body in the conducting state, the stabilizing slot coincides with the guide slot, and the two stabilizing components move continuously to pull the C-shaped stabilizing clip into the stabilizing slot through the connecting transmission rod;

[0025] Before the valve core body rotates 90° in the opposite direction to a vertical position, the stabilizing components move relative to each other and push the C-shaped stabilizing clip to disengage from and engage in the stabilizing slot via the connecting transmission rod. Then, the valve core body rotates to a vertical position and engages with the outer circumferential surface of the valve core body via two stabilizing components.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] This invention utilizes a valve core body with an outer diameter smaller than the inner diameter of the air-conducting valve body. During rotation, the valve core body does not contact the inner wall of the air-conducting valve body. When the valve core body moves vertically to block the air-conducting valve body, the supporting truss, supporting clip, and C-shaped seal move along the groove towards the valve core body. This causes the C-shaped seal to abut against the outer circumferential surface of the valve core body and compress the supporting clip, achieving a sealing effect. During this process, the stabilizing component cooperates with the valve core body to seal the air-conducting valve body. This avoids long-term metal-to-metal friction between the valve core body and the air-conducting valve body, preventing the gradual occurrence of adhesive wear, abrasive wear, and other complex wear phenomena. Furthermore, it prevents multiple failures caused by wear exceeding the allowable tolerance range over service life. It also avoids incomplete closure due to deterioration of the geometric sealing surface tolerances, which could lead to increased media leakage. This ensures the accuracy of pressure regulation, prevents chain reactions such as system pressure oscillations or control failures, improves the service life of the control valve, and guarantees system stability and safety.

[0028] This invention uses a driving component to push the support truss, support clip, and C-shaped seal along the slide groove towards the valve core body. During the downward movement, it is guided by a stabilizing clamp, so that the opposing surfaces of the two stabilizing clamps are in contact with the outside of the valve core body. Since the support truss, support clip, and C-shaped seal are always located within the slide groove, the stability of the valve core body is improved through the stabilizing components, avoiding the valve core body from rotating due to wind pressure, which could lead to damage to the control device, and improving the valve core body's resistance to airflow impact.

[0029] This invention disengages the stabilizing component from the outer circumference of the valve core body. The controller drives the valve core body to rotate 90°, putting the air-conducting valve body into a conducting state. At this time, the stabilizing slot and the guide transverse slot are aligned. The two stabilizing components continue to move outward along the slide groove. Through the connecting transmission rod, the C-shaped stabilizing clip is pulled along the guide transverse slot and engages inside the stabilizing slot. The C-shaped stabilizing clip limits the support core column and the valve core body, preventing the valve core body from swaying under the action of airflow when it is in a horizontal state, thereby improving the stability of the valve core body. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall appearance and structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the external structure of the present invention from a bottom view;

[0032] Figure 3 This is a top view of the external structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the air guide valve body of the present invention;

[0034] Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle;

[0035] Figure 6 This is a schematic diagram of the disassembled structure of the stabilizing component of the present invention;

[0036] Figure 7 This is a schematic diagram of the disassembled structure of the valve core assembly of the present invention;

[0037] Figure 8 This is a schematic diagram of the valve core assembly and stabilizing assembly of the present invention.

[0038] Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B.

[0039] In the diagram: 1. Controller; 2. Air valve body; 3. Valve core assembly; 30. Protective cover; 31. Valve core body; 32. First support block; 33. Support core column; 34. Stabilizing slot; 35. Second support block; 36. Guide transverse groove; 37. C-shaped stabilizing clip; 38. Connecting transmission rod; 39. Docking lug; 4. Stabilizing component; 41. Support truss; 42. Support clip; 43. C-shaped seal; 44. Stabilizing clamp; 45. Drive component; 46. Fixing cover. Detailed Implementation

[0040] 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, and 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.

[0041] like Figures 1 to 9 As shown, the present invention provides a control valve for an aircraft bleed air precooler that resists airflow impact, including a control device 1, an air guide valve body 2 mounted on the control device 1, and further comprising:

[0042] Valve core assembly 3 is located inside the air guide valve body 2, and the air guide valve body 2 is opened and closed by the movement of valve core assembly 3 driven by the controller 1.

[0043] Two stabilizing components 4 are symmetrically arranged on the outside of the air valve body 2;

[0044] The valve core assembly 3 includes a valve core body 31 disposed inside the air guide valve body 2, wherein the outer diameter of the valve core body 31 is smaller than the inner diameter of the air guide valve body 2.

[0045] The stabilizing component 4 includes a fixing cover 46 fixed to the outside of the air valve body 2, and the inside of the fixing cover 46 is provided with a sliding groove that communicates with the inside of the air valve body 2.

[0046] A support truss 41 is movably installed inside the chute. A support clip 42 is fixedly installed at the bottom of the support truss 41. A C-shaped seal 43 is provided on the inner wall of the support clip 42.

[0047] C-shaped seal 43 is made of stainless steel, nickel-based alloy, polyimide, polyetheretherketone, metal-graphite or metal-ceramic composite high temperature and high pressure resistant material;

[0048] Initially, the support truss 41, support clip 42 and C-shaped seal 43 are located in the groove;

[0049] When the controller 1 drives the valve core body 31 to rotate 90° to a vertical position to block the air guide valve body 2, the support truss 41, the support clip 42 and the C-shaped seal 43 move toward the valve core body 31 and engage with the outer peripheral surface of the valve core body 31.

[0050] Conversely, the support truss 41, support clip 42 and C-shaped seal 43 move in opposite directions to disengage from the valve core body 31, and the valve core body 31 rotates 90° in the opposite direction to disengage from the sealing air valve body 2.

[0051] When the precooler control valve for aircraft bleed air is in operation, the control device 1 drives the valve core body 31 to rotate 90° to block the air guide valve body 2. Since the outer diameter of the valve core body 31 is smaller than the inner diameter of the air guide valve body 2, the valve core body 31 does not contact the inner wall of the air guide valve body 2 during rotation. When the valve core body 31 moves vertically to block the air guide valve body 2, the support truss 41, support clip 42, and C-shaped seal 43 move along the groove towards the valve core body 31, causing the C-shaped seal 43 to abut against the outer circumferential surface of the valve core body 31 and compress the support clip 42 to achieve a sealing effect. During this process... The stabilizing component 4, in cooperation with the valve core body 31, seals the air-guided valve body 2, preventing metal-to-metal friction between the valve core body 31 and the air-guided valve body 2 during long-term operation, which would lead to adhesive wear, abrasive wear, and other complex wear phenomena. Furthermore, it prevents multiple failures caused by wear exceeding the allowable tolerance range over service life, thus avoiding incomplete closure due to deterioration of the geometric sealing surface tolerances, which could increase the internal leakage rate of the medium. This ensures the accuracy of pressure regulation, prevents chain reactions such as system pressure oscillation or control failure, improves the service life of the control valve, and guarantees system stability and safety.

[0052] like Figure 5 and Figure 6 As shown, the inner wall of the support clip 42 is provided with an arc groove, and the spacing of the arc groove gradually decreases from the inner circle to the outer circle.

[0053] The stabilizing component 4 moves toward the outer peripheral surface of the valve core body 31, the supporting clip 42 engages with the outside of the valve core body 31, and the C-shaped seal 43 abuts against the outer peripheral surface of the valve core body 31.

[0054] The top of the fixed cover 46 is provided with a driving component 45. The output end of the driving component 45 is fixedly connected to the support truss 41. The driving component 45 drives the support truss 41, the support clip 42 and the C-shaped seal 43 to slide in the groove.

[0055] Initially, the support truss 41, support clip 42, and C-shaped seal 43 are located in the groove. The valve core body 31 is driven to rotate vertically by the controller 1. The drive component 45 pushes the support truss 41, support clip 42, and C-shaped seal 43 along the groove toward the valve core body 31, so that the support clip 42 engages with the outer circumferential surface of the valve core body 31, and the C-shaped seal 43 abuts against the outer circumferential surface of the valve core body 31. Since the spacing of the arc groove at the bottom of the support clip 42 gradually decreases from the inner circle to the outer circle, as the support truss 41, support clip 42, and C-shaped seal 43 continue to move downward, the C-shaped seal 43 adheres to the outer circumferential surface of the valve core body 31, improving the sealing performance between the C-shaped seal 43 and the valve core body 31, thereby ensuring the sealing effect of the air valve body 2.

[0056] like Figure 5 and Figure 6 As shown, two stabilizing clamps 44 are fixedly mounted on the inner wall of the support clamp 42, and the cross-sections of the two stabilizing clamps 44 at opposite ends are in the shape of an "eight".

[0057] The support truss 41, support clip 42 and C-shaped seal 43 move downward and are guided by the inner wall of the stabilizing clamp 44, so that the opposite surfaces of the stabilizing clamp 44 fit against the outside of the valve core body 31.

[0058] The drive component 45 pushes the support truss 41, support clip 42, and C-shaped seal 43 to move along the slide groove toward the valve core body 31. During the downward movement, the stabilizing clamp 44 guides the movement, causing the opposing surfaces of the two stabilizing clamps 44 to fit against the outside of the valve core body 31. Since the support truss 41, support clip 42, and C-shaped seal 43 are always located in the slide groove, the stability of the valve core body 31 is improved by the stabilizing component 4, preventing the valve core body 31 from rotating due to wind pressure, which could damage the control device 1 and improve the resistance of the valve core body 31 to airflow impact.

[0059] like Figures 7-9 As shown, a support core column 33 is fixedly installed in the middle of the valve core body 31, and a first support block 32 and a second support block 35 are symmetrically arranged on the inner wall of the air guide valve body 2. The valve core body 31 is set inside the air guide valve body 2 through the support core column 33, the first support block 32 and the second support block 35.

[0060] When the two stabilizing components 4 move relative to each other, the ends of the two supporting trusses 41 abut against the outside of the first supporting block 32 and the second supporting block 35, respectively.

[0061] The end of the support core column 33 located inside the second support block 35 is provided with a stabilizing groove 34, and the second support block 35 is provided with a guide transverse groove 36 with the same thickness as the stabilizing groove 34.

[0062] A C-shaped stabilizing clip 37 is slidably installed inside the guide groove 36, and a mating lug 39 is fixedly installed at the end of the supporting truss 41.

[0063] The end of the C-shaped stabilizing clip 37 is hinged to the mating lug 39 via the connecting transmission rod 38;

[0064] When the valve core body 31 rotates 90° to put the air valve body 2 in the conducting state, the stabilizing slot 34 coincides with the guide transverse slot 36, and the two stabilizing components 4 continue to move and pull the C-shaped stabilizing clip 37 into the stabilizing slot 34 through the connecting transmission rod 38.

[0065] Before the valve core body 31 rotates 90° in the opposite direction to a vertical position, it moves relative to the stabilizing component 4. The connecting transmission rod 38 pushes the C-shaped stabilizing clip 37 to disengage from the stabilizing slot 34. The valve core body 31 then rotates to a vertical position and is engaged with the outer circumferential surface of the valve core body 31 by the two stabilizing components 4.

[0066] By disengaging the stabilizing component 4 from the outer peripheral surface of the valve core body 31, the controller 1 drives the valve core body 31 to rotate 90°, putting the air guide valve body 2 into the conducting state. At this time, the stabilizing slot 34 and the guide transverse slot 36 are in the overlapping state, while the two stabilizing components 4 continue to move outward along the slide groove. Through the connecting transmission rod 38, the C-shaped stabilizing clip 37 is pulled along the guide transverse slot 36 and engaged inside the stabilizing slot 34. The C-shaped stabilizing clip 37 limits the support core column 33 and the valve core body 31, preventing the valve core body 31 from swaying under the action of airflow when it is in a horizontal state, thereby improving the stability of the valve core body 31.

[0067] Conversely, when the valve core body 31 rotates in the opposite direction to block the air guide valve body 2, the two stabilizing components 4 move relative to each other first. Through the connecting transmission rod 38, they push the C-shaped stabilizing clip 37 to move in the opposite direction and disengage from the stabilizing clip groove 34. The control device 1 can then drive the valve core body 31 to rotate and engage with the outer circumferential surface of the valve core body 31 through the two stabilizing components 4, thereby blocking the air guide valve body 2.

[0068] In a preferred embodiment, a protective cover 30 is also provided. The protective cover 30 is mounted on the fixed cover 46 and covers the internal moving parts such as the support core column 33, the C-shaped stabilizing clip 37, and the connecting transmission rod 38 inside it. This provides sufficient space for the internal moving parts while reducing the intrusion of external dust and impurities, thereby improving the safety and reliability of the equipment operation. The protective cover 30 can be detachable for easy daily maintenance and component repair.

[0069] Working principle and usage process of this invention:

[0070] When the control valve of the precooler for aircraft bleed air is closed, the valve core body 31 moves to a vertical position to block the air guide valve body 2. During this process, since the outer diameter of the valve core body 31 is smaller than the inner diameter of the air guide valve body 2, the valve core body 31 does not contact the inner wall of the air guide valve body 2 during rotation.

[0071] When the valve core body 31 is in a vertical position, the drive component 45 pushes the support truss 41, the support clip 42, and the C-shaped seal 43 to move along the groove toward the valve core body 31, so that the support clip 42 engages with the outer circumferential surface of the valve core body 31, and the C-shaped seal 43 abuts against the outer circumferential surface of the valve core body 31. Since the spacing of the arc groove at the bottom of the support clip 42 gradually decreases from the inner circle to the outer circle, as the support truss 41, the support clip 42, and the C-shaped seal 43 continue to move downward, the C-shaped seal 43 adheres to the outer circumferential surface of the valve core body 31, improving the sealing performance between the C-shaped seal 43 and the valve core body 31.

[0072] When the control valve of the precooler for aircraft bleed air is turned on, the stabilizing component 4 first moves in the opposite direction to disengage from the outer peripheral surface of the valve core body 31. The controller 1 drives the valve core body 31 to rotate in the opposite direction to a horizontal state, so that the air bleed valve body 2 is in the turned-on state. At this time, the stabilizing slot 34 and the guide transverse slot 36 are in the same state. The two stabilizing components 4 continue to move outward along the slide groove. Through the connecting transmission rod 38, the C-shaped stabilizing clip 37 is pulled along the guide transverse slot 36 and engaged inside the stabilizing slot 34. The C-shaped stabilizing clip 37 limits the support core column 33 and the valve core body 31, so as to avoid the phenomenon of swinging caused by the airflow when the valve core body 31 is in a horizontal state, thereby improving the stability of the valve core body 31.

[0073] Conversely, when the valve core body 31 rotates in the opposite direction to block the air guide valve body 2, the two stabilizing components 4 move relative to each other first. Through the connecting transmission rod 38, they push the C-shaped stabilizing clip 37 to move in the opposite direction and disengage from the stabilizing clip groove 34. The controller 1 can then drive the valve core body 31 to rotate and engage with the outer circumferential surface of the valve core body 31 through the two stabilizing components 4, thereby blocking the air guide valve body 2.

[0074] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0075] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A control valve for an aircraft bleed air precooler resistant to airflow impact, comprising a control device (1) and an air guide valve body (2) mounted on the control device (1), characterized in that, Also includes: Valve core assembly (3), the valve core assembly (3) is disposed inside the air guide valve body (2), and the air guide valve body (2) is opened and closed by the control device (1) driving the valve core assembly (3) to move; Stabilizing component (4), the stabilizing component (4) is disposed outside the air valve body (2); The valve core assembly (3) includes a valve core body (31) disposed inside the air guide valve body (2), wherein the outer diameter of the valve core body (31) is smaller than the inner diameter of the air guide valve body (2); The stabilizing component (4) includes a fixed cover (46) fixed to the outside of the air valve body (2), and the inside of the fixed cover (46) is provided with a sliding groove that communicates with the inside of the air valve body (2). A support truss (41) is movably arranged inside the chute. A support clip (42) is fixedly installed at the bottom of the support truss (41). A C-shaped seal (43) is provided on the inner wall of the support clip (42). A support core column (33) is fixedly installed in the middle of the valve core body (31), and a first support block (32) and a second support block (35) are symmetrically arranged on the inner wall of the air guide valve body (2). The valve core body (31) is disposed inside the air guide valve body (2) through the support core column (33), the first support block (32) and the second support block (35). The end of the support core (33) located inside the second support block (35) is provided with a stabilizing groove (34), and the second support block (35) is provided with a guide groove (36) with the same thickness as the stabilizing groove (34). The guide groove (36) is slidably provided with a C-shaped stabilizing clip (37), and the end of the support truss (41) is fixedly fitted with a docking lug (39); the end of the C-shaped stabilizing clip (37) is hinged to the docking lug (39) through a connecting transmission rod (38).

2. The control valve for an aircraft bleed air precooler resistant to airflow impact as described in claim 1, characterized in that: Initially, the support truss (41), support clip (42), and C-shaped seal (43) are located in the groove. When the controller (1) drives the valve core body (31) to rotate 90° to a vertical position to block the air guide valve body (2), the support truss (41), support clip (42), and C-shaped seal (43) move towards the valve core body (31) and engage with the outer circumferential surface of the valve core body (31). Conversely, when the support truss (41), support clip (42), and C-shaped seal (43) move in the opposite direction to disengage from the valve core body (31), the valve core body (31) rotates 90° in the opposite direction to disengage from the air guide valve body (2).

3. The control valve for an aircraft bleed air precooler resistant to airflow impact as described in claim 1, characterized in that: The inner wall of the support clip (42) is provided with an arc groove, and the spacing of the arc groove gradually decreases from the inner circle to the outer circle; the stabilizing component (4) moves toward the outer peripheral surface of the valve core body (31), the support clip (42) is engaged with the outside of the valve core body (31), and the C-shaped seal (43) abuts against the outer peripheral surface of the valve core body (31).

4. The control valve for an aircraft bleed air precooler resistant to airflow impact as described in claim 3, characterized in that: The top of the fixed cover (46) is provided with a driving member (45). The output end of the driving member (45) is fixedly connected to the support truss (41). The driving member (45) drives the support truss (41), the support clip (42) and the C-shaped seal (43) to slide in the groove.

5. The control valve for an aircraft bleed air precooler resistant to airflow impact according to claim 1, characterized in that: The inner wall of the support clip (42) is fixed with two stabilizing clamps (44), and the cross-sections of the opposite ends of the two stabilizing clamps (44) are in the shape of an "eight". The support truss (41), the support clip (42) and the C-shaped seal (43) move down and are guided through the inner wall of the stabilizing clamps (44) so ​​that the opposite surfaces of the stabilizing clamps (44) are in contact with the outside of the valve core body (31).

6. The control valve for an aircraft bleed air precooler resistant to airflow impact as described in claim 1, characterized in that: When the two stabilizing components (4) move relative to each other, the ends of the two supporting trusses (41) abut against the outside of the first supporting block (32) and the second supporting block (35), respectively.

7. The control valve for an aircraft bleed air precooler resistant to airflow impact according to claim 1, characterized in that: When the valve core body (31) rotates 90° to put the air valve body (2) in the conducting state, the stabilizing slot (34) coincides with the guide transverse slot (36), and the two stabilizing components (4) move continuously through the connecting transmission rod (38) to pull the C-shaped stabilizing clip (37) into the stabilizing slot (34); before the valve core body (31) rotates 90° in the opposite direction to a vertical state, the stabilizing components (4) move relative to each other through the connecting transmission rod (38) to push the C-shaped stabilizing clip (37) out of the stabilizing slot (34), and the valve core body (31) rotates again to a vertical state, and the two stabilizing components (4) engage with the outer circumferential surface of the valve core body (31).

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