Internal pressure test device for aero-engine combustion chamber casing
By designing an aircraft engine combustion chamber receiver internal pressure test device with explosion-proof box and pressure-resistant conduit, the explosion hazard and inconvenience of handling during internal pressure testing of the combustion chamber receiver are solved, and safe and efficient testing and handling are achieved.
Patent Information
- Application Number
- CN202421304617.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-09
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-06-09
AI Technical Summary
In the prior art, the lack of external protection during internal pressure testing of the combustion chamber receiver is likely to lead to explosion hazards and the receiver is inconvenient to carry.
A device including an explosion-proof box, an explosion-proof door, an explosion-proof glass and multiple pressure-resistant conduits is designed. The receiver is protected by an explosion-proof box and an explosion-proof door, and the internal and external pressure test is performed using a pressure-resistant conduit, and the receiver is easily transported through a clamping mechanism.
Effectively prevent the hazard of the receiver explosion, realize the safety testing and convenient handling of the receiver, and improve the testing safety and operation convenience.
Smart Images
Figure CN223139230U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of internal pressure test of an engine combustion chamber casing, and more specifically, to an internal pressure test device for an aeroengine combustion chamber casing. Background Technique
[0002] During use, the combustion chamber casing bears high temperature, high pressure and large aerodynamic loads, and is one of the main load-bearing components of an aeroengine. The combustion chamber casing is an important part of an aeroengine. There are strict usage requirements for the strength, stiffness, end face sealing performance of the combustion chamber casing and whether there is leakage in the weld. The combustion chamber casing is composed of a diffuser and a detachable outer casing. Among them, the detachable outer casing is a thin-walled double-layer cylindrical structure. The failure mode of the combustion chamber casing may be explosive, which has a dangerous impact on the aircraft and causes catastrophic damage. Therefore, it is necessary to verify the strength and life of the combustion chamber casing to ensure flight safety. In the prior art, when performing an internal pressure test on the casing, the outside of the test device is generally not protected, and it is easy to cause danger when an explosion occurs during the internal pressure test; moreover, the combustion chamber casing has a certain weight, and it is not very convenient to manually carry it onto the test device. For this reason, we propose an internal pressure test device for an aeroengine combustion chamber casing. Content of the Utility Model
[0003] Aiming at the problems mentioned in the above background technique, the purpose of the utility model is to provide an internal pressure test device for an aeroengine combustion chamber casing.
[0004] To solve the above problems, the utility model adopts the following technical scheme:
[0005] An internal pressure test device for an aeroengine combustion chamber casing, including an explosion-proof box, a clamping mechanism is arranged on the explosion-proof box, an explosion-proof door is hinged to the front of the explosion-proof box, a lower sealing seat is arranged at the bottom of the inner cavity of the explosion-proof box, an electric hydraulic rod is fixedly installed on the top surface of the explosion-proof box, the output end of the electric hydraulic rod extends into the inner cavity of the explosion-proof box and is fixedly connected with an upper sealing plate, a four-way electric control valve is fixedly sleeved on the top of the explosion-proof box, an air inflation pump is fixedly installed on the back of the explosion-proof box, the output end of the air inflation pump is fixedly connected with a first pressure-resistant conduit, the end of the first pressure-resistant conduit is connected with the input end of the four-way electric control valve, and the three output ends of the four-way electric control valve respectively extend into the inner cavity of the explosion-proof box and are fixedly connected with second pressure-resistant conduits. The bottoms of the three second pressure-resistant conduits are fixedly sleeved on the bottom of the upper sealing plate.
[0006] As a preferred embodiment of the present utility model, the clamping mechanism includes two square pipe frames fixedly sleeved on the inner wall of the explosion-proof box. The ends of the two square pipe frames are respectively fixedly sleeved on the back of the explosion-proof box. There are chutes on the sides of the two square pipe frames and located in the inner cavity of the explosion-proof box. Servo motors are respectively fixedly installed at the ends of the two square pipe frames. The output shafts of the two servo motors respectively extend into the inner cavities of the square pipe frames and are fixedly connected with screws. Moving columns are respectively threadedly sleeved on the outer sides of the two screws. Mounting seats are respectively fixedly connected to the sides of the two moving columns. The two mounting seats respectively penetrate through the chutes and extend into the inner cavity of the explosion-proof box, and a first electric push rod is fixedly installed. The output end of the first electric push rod is fixedly connected with a lifting seat. A second electric push rod is fixedly installed on the side of the lifting seat. The output end of the second electric push rod is fixedly connected with a clamping plate.
[0007] As a preferred embodiment of the present utility model, a control panel is fixedly installed on the outer side of the explosion-proof box.
[0008] As a preferred embodiment of the present utility model, a pressure detector is fixedly installed in the middle of the first pressure-resistant conduit.
[0009] As a preferred embodiment of the present utility model, explosion-proof glass is fixedly sleeved on the explosion-proof door.
[0010] As a preferred embodiment of the present utility model, the inner wall of the square pipe frame is in contact with the outer side surface of the moving column.
[0011] The advantages of the present utility model are as follows:
[0012] (1) In the present utility model, through the combined use of the explosion-proof box, the explosion-proof door and the explosion-proof glass, when an internal pressure test is carried out on the casing, the casing is placed in the inner cavity of the explosion-proof box, and the explosion-proof box and the explosion-proof door are used to protect it, avoiding the harm caused to the staff by the explosion of the casing. In addition, there are three second pressure-resistant conduits at the bottom of the four-way electric control valve. Through the three second pressure-resistant conduits, air can be respectively inflated into the inner cavity, the interlayer and the external position of the casing, so as to realize the test of internal pressure and external pressure.
[0013] (2) In the present utility model, the cooperation between the screw and the moving column drives the mounting seat, the lifting seat and the clamping plate to move. The height of the clamping plate is adjusted by the first electric push rod, and the second electric push rod drives the clamping plate to clamp the casing, so as to realize moving the casing into the explosion-proof box for testing or moving the tested casing out of the explosion-proof box, avoiding manual handling and having good convenience. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0015] Figure 2 Is a schematic cross-sectional view of the present utility model;
[0016] Figure 3 Is a schematic internal view of the explosion-proof box of the present utility model;
[0017] Figure 4 Is the present utility model Figure 2 Enlarged schematic view of location A in.
[0018] Explanation of reference numerals in the figure:
[0019] 1. Explosion-proof box; 2. Clamping mechanism; 3. Explosion-proof door; 4. Explosion-proof glass; 5. Lower sealing seat; 6. Electric hydraulic rod; 7. Upper sealing plate; 8. Inflation pump; 9. First pressure-resistant conduit; 10. Four-way electric control valve; 11. Second pressure-resistant conduit; 12. Pressure detector; 13. Square pipe frame; 14. Chute; 15. Servo motor; 16. Screw rod; 17. Moving column; 18. First electric push rod; 19. Lifting seat; 20. Second electric push rod; 21. Clamping plate; 22. Control panel; 23. Mounting seat. Specific embodiments
[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "top / bottom end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model 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 cannot be understood as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "sheathed / connected", "connection", etc. should be understood in a broad sense. For example, "connection" 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 utility model can be understood according to specific situations.
[0023] Embodiment:
[0024] Please refer to Figures 1-4 A device for internal pressure test of an aeroengine combustion chamber casing, comprising an explosion-proof box 1, a clamping mechanism 2 is arranged on the explosion-proof box 1, an explosion-proof door 3 is hinged to the front of the explosion-proof box 1, a lower sealing seat 5 is arranged at the bottom of the inner cavity of the explosion-proof box 1, an electric hydraulic rod 6 is fixedly installed on the top surface of the explosion-proof box 1, the output end of the electric hydraulic rod 6 extends into the inner cavity of the explosion-proof box 1 and is fixedly connected with an upper sealing plate 7, a four-way electric control valve 10 is fixedly sleeved on the top of the explosion-proof box 1, an air inflation pump 8 is fixedly installed on the back of the explosion-proof box 1, the output end of the air inflation pump 8 is fixedly connected with a first pressure-resistant conduit 9, the end of the first pressure-resistant conduit 9 is connected with the input end of the four-way electric control valve 10, and three output ends of the four-way electric control valve 10 respectively extend into the inner cavity of the explosion-proof box 1 and are fixedly connected with second pressure-resistant conduits 11, and the bottom ends of the three second pressure-resistant conduits 11 are fixedly sleeved on the bottom of the upper sealing plate 7.
[0025] In this embodiment, the second pressure-resistant conduit 11 has a certain length to ensure that the upper sealing plate 7 can move up and down smoothly. In addition, the bottom ends of the three second pressure-resistant conduits 11 just correspond to the positions of the inner cavity, the interlayer and the outside of the casing, so as to pressurize the inner cavity, the interlayer and the outside of the casing respectively.
[0026] Specifically, please refer to Figures 1 to 4 The clamping mechanism 2 includes two square pipe frames 13 fixedly sleeved on the inner wall of the explosion-proof box 1. The end parts of the two square pipe frames 13 are respectively fixedly sleeved on the back of the explosion-proof box 1. Chutes 14 are arranged on the sides of the two square pipe frames 13 and in the inner cavity of the explosion-proof box 1. Servo motors 15 are respectively fixedly installed at the end parts of the two square pipe frames 13. The output shafts of the two servo motors 15 respectively extend into the inner cavities of the square pipe frames 13 and are fixedly connected with screws 16. Moving columns 17 are respectively threadedly sleeved on the outer sides of the two screws 16. Mounting seats 23 are respectively fixedly connected to the sides of the two moving columns 17. The two mounting seats 23 respectively penetrate through the chutes 14 and extend into the inner cavity of the explosion-proof box 1 and are fixedly installed with first electric push rods 18. The output ends of the first electric push rods 18 are fixedly connected with lifting seats 19. A second electric push rod 20 is fixedly installed on the side part of the lifting seat 19. The output end of the second electric push rod 20 is fixedly connected with a clamping plate 21.
[0027] Specifically, please refer to Figure 1 A control panel 22 is fixedly installed on the outside of the explosion-proof box 1.
[0028] In this embodiment, the device is controlled through the control panel 22.
[0029] Specifically, please refer to Figure 1 A pressure detector 12 is fixedly installed in the middle of the first pressure-resistant conduit 9.
[0030] In this embodiment, a pressure detector 12 is used to measure the air pressure introduced into the four-way solenoid valve 10, the second pressure-resistant conduit 11, and the casing.
[0031] Specifically, please refer to Figure 1 , an explosion-proof glass 4 is fixedly sleeved on the explosion-proof door 3.
[0032] In this embodiment, the situation inside the explosion-proof box 1 is controlled and observed through the explosion-proof glass 4.
[0033] Specifically, please refer to Figure 4 , the inner wall of the square pipe frame 13 is in contact with the outer side surface of the moving column 17.
[0034] In this embodiment, the inner wall of the square pipe frame 13 is used to limit the moving column 17, so that the moving column 17 can only move along the axial direction of the screw 16.
[0035] Working principle: When in use, first open the explosion-proof door 3, and move the casing of the aero-engine combustion chamber to the front of the explosion-proof box 1. Start the servo motor 15 to drive the screw 16 to rotate. Utilize the cooperation between the screw 16 and the moving column 17 to drive the moving column 17 to move. Drive the mounting seat 23, the first electric push rod 18, the lifting seat 19, the second electric push rod 20 and the clamping plate 21 to move outside the explosion-proof box 1 by means of the moving column 17. Start the first electric push rod 18 to drive the lifting seat 19 and the clamping plate 21 to move downward. Start the second electric push rod 20 to drive the clamping plate 21 to move. Clamp the casing by means of the clamping plate 21. Then start the first electric push rod 18 again to drive the lifting seat 19 to move upward. Drive the clamping plate 21 and the casing clamped by the clamping plate 21 to move upward by means of the lifting seat 19, so as to lift the casing. At this time, start the servo motor 15 to drive the screw 16 to rotate in reverse. Move the casing clamped by the clamping plate 21 into the inner cavity of the explosion-proof box 1 by means of the cooperation between the screw 16 and the moving column 17. At this time, drive the lifting seat 19 and the clamping plate 21 to move downward again through the first electric push rod 18, so as to place the casing on the lower sealing seat 5. Then close the explosion-proof door 3 to seal the inner cavity of the explosion-proof box 1. At the same time, start the electric hydraulic rod 6 to drive the upper sealing plate 7 to move downward. Extrude and seal the top of the casing by means of the upper sealing plate 7. At the same time, the lower sealing seat 5 extrudes and seals the bottom of the casing, and makes the bottom ends of the three second pressure-resistant conduits 11 correspond to the inner cavity, the interlayer and the external position of the casing respectively. Finally, control the four-way electric control valve 10 to be separately connected to a second pressure-resistant conduit 11. Start the air inflation pump 8 to respectively fill high-pressure gas into the inner cavity, the interlayer and the external position of the casing through the first pressure-resistant conduit 9, the four-way electric control valve 10 and the second pressure-resistant conduit 11, so as to respectively conduct a pressure resistance test on the inner cavity, the interlayer and the external position of the casing. The internal pressure test is to inflate the inner cavity and the interlayer of the casing. The external pressure test is to inflate the inner cavity of the explosion-proof box 1. Extrude the outside of the casing by means of the high pressure in the inner cavity of the explosion-proof box 1. And after the test, carry the casing to the outside of the explosion-proof box 1 through the clamping mechanism 2, and that's it.
[0036] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its improved concept, makes equivalent substitution or change, and should be covered by the protection scope of the present invention.
Claims
1. An internal pressure test device for an aero-engine combustion chamber casing, characterized in that: It includes an explosion-proof box (1), a clamping mechanism (2) is arranged on the explosion-proof box (1), an explosion-proof door (3) is hinged to the front of the explosion-proof box (1), a lower sealing seat (5) is arranged at the bottom of the inner cavity of the explosion-proof box (1), an electric hydraulic rod (6) is fixedly installed on the top surface of the explosion-proof box (1), the output end of the electric hydraulic rod (6) extends into the inner cavity of the explosion-proof box (1) and is fixedly connected with an upper sealing plate (7), a four-way electric control valve (10) is fixedly sleeved on the top of the explosion-proof box (1), an air inflation pump (8) is fixedly installed on the back of the explosion-proof box (1), the output end of the air inflation pump (8) is fixedly connected with a first pressure-resistant conduit (9), the end of the first pressure-resistant conduit (9) is connected to the input end of the four-way electric control valve (10), and the three output ends of the four-way electric control valve (10) respectively extend into the inner cavity of the explosion-proof box (1) and are fixedly connected with second pressure-resistant conduits (11), and the bottoms of the three second pressure-resistant conduits (11) are fixedly sleeved on the bottom of the upper sealing plate (7).
2. The internal pressure test device for an aeroengine combustion chamber casing according to claim 1, wherein: The clamping mechanism (2) includes two square pipe frames (13) fixedly sleeved on the inner wall of the explosion-proof box (1), the ends of the two square pipe frames (13) are respectively fixedly sleeved on the back of the explosion-proof box (1), sliding grooves (14) are arranged on the sides of the two square pipe frames (13) and located in the inner cavity of the explosion-proof box (1), servo motors (15) are respectively fixedly installed at the ends of the two square pipe frames (13), the output shafts of the two servo motors (15) respectively extend into the inner cavities of the square pipe frames (13) and are fixedly connected with screw rods (16), moving columns (17) are respectively threadedly sleeved on the outer sides of the two screw rods (16), mounting seats (23) are respectively fixedly connected to the sides of the two moving columns (17), the two mounting seats (23) respectively penetrate through the sliding grooves (14) and extend into the inner cavity of the explosion-proof box (1) and are fixedly installed with first electric push rods (18), the output ends of the first electric push rods (18) are fixedly connected with lifting seats (19), second electric push rods (20) are fixedly installed on the side parts of the lifting seats (19), and the output ends of the second electric push rods (20) are fixedly connected with clamping plates (21).
3. The internal pressure test device for the combustor casing of an aeroengine according to claim 1, characterized in that: A control panel (22) is fixedly installed on the outer side of the explosion-proof box (1).
4. An internal pressure test device for an aeroengine combustion chamber casing according to claim 1, characterized in that: A pressure detector (12) is fixedly installed in the middle of the first pressure-resistant conduit (9).
5. An internal pressure test device for an aeroengine combustion chamber casing according to claim 1, characterized in that: An explosion-proof glass (4) is fixedly sleeved on the explosion-proof door (3).
6. The internal pressure test device for an aeroengine combustion chamber casing according to claim 2, wherein: The inner wall of the square pipe frame (13) is in contact with the outer side surface of the moving column (17).