Pressure reduction air bottle test platform for high-altitude quick start of turbojet engine

Abstract

The utility model belongs to the technical field of air bottle detection, and discloses a pressure reduction air bottle test platform for high-altitude quick start of a turbojet engine, which comprises a substrate, a fixing module for mounting an air bottle to be tested is arranged on the substrate, and the fixing module is communicated with an inner cavity of the air bottle; an air inlet module, a transfer module and a measurement module are arranged on the substrate, the air inlet module controls an external air source and an air inlet of the fixing module, the transfer module is communicated with the fixing module and the air bottle, and the measurement module is communicated with the fixing module; the air bottle comprises a bottle body detachably arranged on the fixing module, a pressure reduction module isolated from the bottle body is arranged on the bottle body, and the pressure reduction module communicates with the transfer module. The pressure reducing module is high in integration degree, convenient to use, maintain and upgrade, and capable of achieving flexible adjustment of the pressure reducing performance of the pressure reducing module, reducing debugging cost, improving testing accuracy and meeting starting requirements of different turbojet engines.

Description

Technical Field

[0001] This utility model relates to the field of air cylinder testing technology, and in particular to a test platform for depressurized air cylinders used for high-altitude rapid start-up of turbojet engines. Background Technology

[0002] The depressurized air cylinder for high-altitude rapid start of turbojet engines is an important component of turbojet engines, mainly used to provide compressed air for high-altitude start-up of turbojet engines. The compressed air stored in the existing air cylinders is at a high pressure and needs to be depressurized before use. However, the existing compressed air depressurization requires a separate pressure reducing valve, which lacks adjustment flexibility and will also increase the load on the turbojet engine and reduce its performance.

[0003] Our company has designed an air cylinder with integrated pressure reduction function. The pressure reduction module of this air cylinder can preset the air pressure after pressure reduction, which needs to be adjusted according to actual usage requirements to meet the needs of different turbojet engines. At the same time, this pressure-reducing air cylinder uses a pyrotechnic device as an initiator. The explosion of the pyrotechnic device pushes the pin to break the seal at the outlet of the air cylinder, allowing the high-pressure air inside the air cylinder to enter the pressure reduction module. However, the pyrotechnic device and the seal are disposable and expensive. Moreover, the air cylinder needs to be adjusted multiple times, which further increases the adjustment cost.

[0004] Therefore, this application designs a test platform for depressurized air cylinders for high-altitude rapid start-up of turbojet engines to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a test platform for depressurized air cylinders used for high-altitude rapid start-up of turbojet engines, in order to solve the problems existing in the prior art.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides a test platform for a depressurized air cylinder for high-altitude rapid start of a turbojet engine, comprising a base plate, wherein a fixing module for mounting an air cylinder to be tested is provided on the base plate, and the fixing module is connected to the inner cavity of the air cylinder;

[0007] The base plate is provided with an air intake module, a transfer module and a measurement module. The air intake module controls the external air source and the air inlet of the fixed module. The transfer module connects the fixed module and the air cylinder. The measurement module is connected to the fixed module.

[0008] The air cylinder includes a cylinder body detachably mounted on the fixed module, and a pressure-reducing module disposed on the cylinder body and isolated from the cylinder body. The pressure-reducing module is connected to the transfer module.

[0009] Preferably, the pressure reducing module is provided with a connecting channel for connecting the bottle body, and an isolation plug is sealed in the connecting channel to isolate the bottle body from the inner cavity of the pressure reducing module.

[0010] Preferably, an air inlet plug is threaded onto the pressure reducing module, the air inlet plug is connected to the pressure reducing chamber of the pressure reducing module, and the air inlet plug is connected to the transfer module.

[0011] Preferably, the fixing module includes a fixing seat, which is connected to the air intake module and the transfer module respectively; the fixing seat is provided with an inflation head that is connected to the fixing seat, the air inlet at the bottom of the bottle body is sealed and snapped onto the inflation head, and the inflation head is connected to the inner cavity of the bottle body.

[0012] Preferably, the bottom of the bottle body is provided with a snap-fit ​​groove, and the inflation head is adapted to the snap-fit ​​groove and snapped into the snap-fit ​​groove.

[0013] Preferably, the air intake module includes an air intake solenoid valve fixedly mounted on the base plate. The inlet of the air intake solenoid valve is connected to an external air source through an air intake pipe, and the outlet of the air intake solenoid valve is connected to the fixed base through a first connecting pipe.

[0014] Preferably, the transfer module includes a start solenoid valve fixedly mounted on the base plate, the air inlet of the start solenoid valve being connected to the fixed base through a second connecting pipe, and the outlet of the start solenoid valve being connected to the air inlet plug through a third connecting pipe.

[0015] Preferably, the measurement module includes a pressure sensor fixedly mounted on the substrate, and the measurement point of the pressure sensor is connected to the fixed base through a measurement tube.

[0016] Preferably, the fixed base is provided with an air distribution chamber, and the measuring tube, the first connecting tube, the second connecting tube and the measuring tube are respectively connected to the air distribution chamber.

[0017] Preferably, the snap-fit ​​groove is provided with a one-way air inlet valve that opens in one direction into the bottle body, and the one-way air inlet valve is opened after the inflation head is inserted into the air inlet hole.

[0018] Compared with existing technologies, this utility model has the following advantages and technical effects: This utility model discloses a test platform for a depressurized air cylinder used for high-altitude rapid start-up of a turbojet engine. This test platform integrates an intake module, a transfer module, and a measurement module. The air cylinder under test is detachably connected to a fixed module, forming a complete test system. This makes the testing process more efficient, reduces testing steps and required equipment, thereby improving testing efficiency. During testing, the depressurization module is isolated from the cylinder body, allowing independent testing of the cylinder body strength and the depressurization effect of the depressurization module. Without damaging pneumatic components, the depressurization effect of the depressurization module can be adjusted multiple times, meeting the different compressed air pressure requirements of different turbojet engines. This design improves the applicability and flexibility of depressurized air cylinders, while also preventing damage to vulnerable parts and reducing testing costs. The testing platform can precisely control the air intake, transfer, and measurement processes, reducing waste caused by improper debugging. The measurement module can accurately measure the pressure inside the air cylinder, improving test accuracy and making test results more reliable. Furthermore, the highly automated and precise testing process reduces the impact of human error on test results. The modular design of the testing platform, with relatively independent modules, facilitates maintenance and upgrades, allowing for individual replacement or upgrades without affecting the overall operation of the testing platform, thus improving its reliability and scalability.

[0019] This invention features a high degree of integration, ease of use, convenient maintenance and upgrades, and the ability to flexibly adjust the decompression performance of the decompression module, thereby reducing debugging costs, improving testing accuracy, and meeting the starting requirements of different turbojet engines. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0021] Figure 1 This is an axial view of the test platform for the depressurized air cylinder used for high-altitude rapid start-up of a turbojet engine according to this utility model.

[0022] Figure 2 This is a top view of the test platform for the depressurized air cylinder used for high-altitude rapid start of the jet engine according to this utility model;

[0023] Figure 3 This is a schematic diagram of the air bottle structure of this utility model;

[0024] Figure 4 This is a schematic diagram of the fixing base structure of this utility model;

[0025] In the diagram: 1. Base plate; 2. Air cylinder; 3. Bottle body; 4. Pressure reduction module; 5. Connection channel; 6. Isolation plug; 7. Air inlet plug; 8. Fixing base; 9. Inflation head; 10. Snap-fit ​​groove; 11. Air inlet solenoid valve; 12. First connecting pipe; 13. Start solenoid valve; 14. Second connecting pipe; 15. Third connecting pipe; 16. Pressure sensor; 17. Measuring tube; 18. Display screen; 19. Air distribution chamber; 20. One-way air inlet valve; 21. Support foot. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] Reference Figures 1-4 As shown, this embodiment provides a test platform for depressurized air cylinders for high-altitude rapid start of turbojet engines, including a base plate 1. A fixing module for mounting an air cylinder 2 to be tested is provided on the base plate 1, and the fixing module is connected to the inner cavity of the air cylinder 2.

[0029] The base plate 1 is provided with an air intake module, a transfer module and a measurement module. The air intake module controls the external air source and the air inlet of the fixed module. The transfer module connects the fixed module and the air bottle 2. The measurement module is connected to the fixed module.

[0030] The air cylinder 2 includes a cylinder body 3 that is detachably mounted on a fixed module. A pressure-reducing module 4, which is isolated from the cylinder body 3, is mounted on the cylinder body 3 and is connected to the transfer module.

[0031] This utility model discloses a test platform for a depressurized air cylinder used in high-altitude rapid start-up of a turbojet engine. The platform integrates an intake module, a transfer module, and a measurement module. The air cylinder 2 under test is detachably connected to a fixed module, forming a complete test system. This makes the testing process more efficient, reduces testing steps and required equipment, thereby improving testing efficiency. During testing, the depressurization module 4 is isolated from the cylinder body 3, allowing independent testing of the strength of the cylinder body 3 and the depressurization effect of the depressurization module 4. Without damaging pneumatic components, the depressurization effect of the depressurization module 4 can be adjusted multiple times to meet the different compressed air pressure requirements of various turbojet engines, thus improving the efficiency of depressurized air cylinder testing. The applicability and flexibility of gas cylinder 2 are enhanced; it also avoids damage to vulnerable parts, reducing testing costs; the testing platform can precisely control the air intake, transfer, and measurement processes, reducing waste caused by improper debugging; the measurement module can accurately measure the pressure inside air cylinder 2, improving test accuracy and making test results more reliable; at the same time, due to the high degree of automation and precision in the testing process, the impact of human error on test results is reduced; the testing platform adopts a modular design, with each module relatively independent, facilitating maintenance and upgrades, and allowing for individual replacement or upgrades without affecting the operation of the entire testing platform, thus improving the reliability and scalability of the testing platform. This utility model has a high degree of integration, is easy to use, and facilitates maintenance and upgrades. It allows for flexible adjustment of the pressure reduction performance of the pressure reduction module 4, reducing debugging costs, improving test accuracy, and meeting the starting requirements of different turbojet engines.

[0032] In one embodiment of this utility model, the bottom end of the substrate 1 is provided with a plurality of support feet 21, so that the substrate 1 can be suspended and fixed on the ground, and various modules can be conveniently installed from the back of the substrate 1.

[0033] The design was further optimized by incorporating a connecting channel 5 within the pressure-reducing module 4 to connect to the bottle body 3. An isolation plug 6 is sealed within the connecting channel 5, isolating the bottle body 3 from the inner cavity of the pressure-reducing module 4. The isolation plug 6 isolates the bottle body 3 and the pressure-reducing module 4 before testing, allowing for independent testing and ensuring accuracy. Simultaneously, the isolation plug 6 replaces the damaged isolation components of the finished air bottle 2, enabling unlimited testing and reducing testing costs.

[0034] Further optimization involves threaded installation of an air inlet plug 7 on the pressure reducing module 4. The air inlet plug 7 connects to the pressure reducing chamber of the pressure reducing module 4 and is also connected to the transfer module. The air inlet plug 7 is installed at the location where pyrotechnic devices are installed on the pressure reducing module 4, allowing high-pressure gas from the transfer module to smoothly enter the pressure reducing module 4 for pressure reduction testing. Using compressed air from the transfer module at the same pressure as inside the cylinder 3 as the starting power allows for precise control of the gas flow and pressure entering the pressure reducing module 4, simulating different high-altitude environments, avoiding the consumption of pyrotechnic devices, and reducing costs. Simultaneously, the threaded installation method facilitates the removal of the air inlet plug 7, preventing damage to the structure of the pressure reducing module 4 and ensuring uninterrupted use.

[0035] The design is further optimized. The fixing module includes a fixing base 8, which is connected to both the air intake module and the transfer module. An inflation head 9, connected to the fixing base 8, is mounted on the fixing base 8. The air inlet at the bottom of the bottle body 3 is sealed and snapped onto the inflation head 9, which is connected to the inner cavity of the bottle body 3. The fixing base 8 is connected to the base plate 1 by bolts or other means, serving as the positioning and installation location for the air bottle 2. The inflation head 9 protrudes from the fixing base 8, allowing the air bottle 2 to be stably mounted on the test platform during testing. The sealed connection between the air inlet and the inflation head 9 prevents compressed air leakage, facilitating convenient, quick, and stable inflation of compressed air into the bottle body 3. It also facilitates the disassembly and replacement of the air bottle 2.

[0036] The design is further optimized by providing a snap-fit ​​groove 10 at the bottom of the bottle body 3. The inflation head 9 is fitted into and snaps into the snap-fit ​​groove 10. A one-way air inlet valve 20, which opens in one direction into the bottle body 3, is located within the snap-fit ​​groove 10. The one-way air inlet valve 20 opens after the inflation head 9 is inserted into the air inlet. The snap-fit ​​groove 10 at the bottom of the bottle body 3 securely engages with the inflation head 9, making installation convenient and quick, and ensuring a more stable and convenient installation of the air bottle 2. The one-way air inlet valve 20 opens in one direction into the bottle body 3. When the inflation head 9 is inserted into the snap-fit ​​groove 10, the one-way air inlet valve 20 is opened, facilitating inflation into the bottle body 3.

[0037] Further optimization of the design includes an intake solenoid valve 11 fixedly mounted on the base plate 1. The inlet of the intake solenoid valve 11 is connected to an external air source via an intake pipe, and the outlet of the intake solenoid valve 11 is connected to the fixed base 8 via a first connecting pipe 12. The inlet of the intake solenoid valve 11 is connected to an external air compressor via the intake pipe, facilitating the provision of a high-pressure air source. When air intake is required, the intake solenoid valve 11 is opened, and high-pressure air enters the fixed base 8 through the first intake pipe. This allows for precise control of the entry and exit of the external air source, as well as control of the air pressure inside the bottle 3, ensuring the accuracy and safety of the test.

[0038] Further optimizing the design, the transfer module includes a start-up solenoid valve 13 fixedly mounted on the base plate 1. The air inlet of the start-up solenoid valve 13 is connected to the fixed base 8 via a second connecting pipe 14, and the outlet of the start-up solenoid valve 13 is connected to the air inlet plug 7 via a third connecting pipe 15. The start-up solenoid valve 13 controls the flow of compressed air between the fixed base 8 and the pressure-reducing module 4, precisely controlling the entry and exit of high-pressure gas in the pressure-reducing module 4. Using high-pressure air with the same pressure as that inside the bottle 3 as the air source, the pressure-reducing module 4 is tested for pressure reduction, and the pressure reduction ratio of the pressure-reducing module 4 is adjusted according to the results, making the pressure-reducing module 4 suitable for different types of air bottles 2.

[0039] Further optimization of the design includes a measurement module comprising a pressure sensor 16 fixedly mounted on the substrate 1. The measurement point of the pressure sensor 16 is connected to the mounting base 8 via a measurement tube 17. The pressure sensor 16, connected to the mounting base 8 via the measurement tube 17, can measure the pressure of the high-pressure air supplied to the mounting base 8 in real time, thereby accurately monitoring the air source pressure for testing.

[0040] In one embodiment of the utility model, the pressure sensor 16 is provided with a display screen 18, which can display the pressure value measured by the pressure sensor 16 in real time.

[0041] The design was further optimized by incorporating a gas distribution chamber 19 within the mounting base 8. The measuring tube 17, the first connecting tube 12, the second connecting tube 14, and the measuring tube 17 are all connected to the gas distribution chamber 19. The gas distribution chamber 19, located within the mounting base 8, connects to the measuring tube 17, the first connecting tube 12, and the second connecting tube 14, forming a multi-pass structure. This allows for smoother and more uniform gas flow in the inlet, transfer, and measurement modules, ensuring consistent air pressure and test pressure within the bottle 3, simulating a complete air bottle 2, thereby improving the accuracy and stability of the test.

[0042] Testing process:

[0043] During testing, the seal between the body 3 of air cylinder 2 and the pressure reducing module 4 is removed and isolated with an isolation plug 6. During operation, compressed air from an external air source is filled into air cylinder 2 to achieve the same pressure as the air source and is maintained at that pressure for a period of time to test the sealing performance and strength of the body 3. After a period of time, high-pressure gas with the same pressure as that in air cylinder 2 is introduced into pressure reducing module 4 by activating solenoid valve 13. After the high-pressure gas is depressurized, it is discharged from pressure reducing module 4 and measured to observe whether it reaches the required air pressure. If the air pressure is not correct, the diaphragm and pressure reducing spring of pressure reducing module 4 need to be replaced to adjust the pressure, and the test is repeated.

[0044] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0045] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A test platform for depressurized air cylinders for high-altitude rapid start-up of turbojet engines, characterized in that: Includes a base plate (1), on which a fixing module for mounting an air bottle (2) to be tested is provided, the fixing module being in communication with the inner cavity of the air bottle (2); An air intake module, a transfer module and a measurement module are provided on the substrate (1). The air intake module controls the external air source and the air inlet of the fixed module. The transfer module connects the fixed module and the air bottle (2). The measurement module is connected to the fixed module. The air bottle (2) includes a bottle body (3) detachably mounted on the fixed module. A pressure-reducing module (4) is provided on the bottle body (3) and is isolated from the bottle body (3). The pressure-reducing module (4) is connected to the transfer module.

2. The test platform for high-altitude rapid start-up of turbojet engines using depressurized air cylinders according to claim 1, characterized in that: The pressure reducing module (4) is provided with a connecting channel (5) for connecting the bottle body (3), and an isolation plug (6) is sealed in the connecting channel (5) to isolate the bottle body (3) from the inner cavity of the pressure reducing module (4).

3. The test platform for high-altitude rapid start-up of turbojet engines using depressurized air cylinders according to claim 2, characterized in that: An air inlet plug (7) is threaded onto the pressure reducing module (4). The air inlet plug (7) is connected to the pressure reducing chamber of the pressure reducing module (4) and to the transfer module.

4. The test platform for high-altitude rapid start-up of turbojet engines using depressurized air cylinders according to claim 3, characterized in that: The fixing module includes a fixing seat (8), which is connected to the air intake module and the transfer module respectively; the fixing seat (8) is provided with an inflation head (9) connected to the fixing seat (8), the air inlet at the bottom of the bottle body (3) is sealed and snapped onto the inflation head (9), and the inflation head (9) is connected to the inner cavity of the bottle body (3).

5. The test platform for high-altitude rapid start of turbojet engines using depressurized air cylinders according to claim 4, characterized in that: The bottom of the bottle body (3) is provided with a snap-fit ​​groove (10), and the inflation head (9) is adapted to the snap-fit ​​groove (10) and snapped into the snap-fit ​​groove (10).

6. The test platform for high-altitude rapid start of turbojet engines using depressurized air cylinders according to claim 4, characterized in that: The air intake module includes an air intake solenoid valve (11) fixedly installed on the base plate (1). The inlet of the air intake solenoid valve (11) is connected to an external air source through an air intake pipe, and the outlet of the air intake solenoid valve (11) is connected to the fixed base (8) through a first connecting pipe (12).

7. The test platform for high-altitude rapid start of turbojet engines using depressurized air cylinders according to claim 6, characterized in that: The transfer module includes a start solenoid valve (13) fixedly installed on the base plate (1). The air inlet of the start solenoid valve (13) is connected to the fixed seat (8) through the second connecting pipe (14), and the outlet of the start solenoid valve (13) is connected to the air inlet plug (7) through the third connecting pipe (15).

8. The test platform for high-altitude rapid start of turbojet engines using depressurized air cylinders according to claim 7, characterized in that: The measurement module includes a pressure sensor (16) fixedly mounted on the substrate (1), and the measurement point of the pressure sensor (16) is connected to the fixed base (8) through the measurement tube (17).

9. The test platform for high-altitude rapid start of turbojet engines using depressurized air cylinders according to claim 8, characterized in that: The fixed base (8) is provided with an air distribution chamber (19), and the measuring tube (17), the first connecting tube (12), the second connecting tube (14) and the measuring tube (17) are respectively connected to the air distribution chamber (19).

10. The test platform for high-altitude rapid start of turbojet engines using depressurized air cylinders according to claim 5, characterized in that: The snap-fit ​​groove (10) is provided with a one-way air inlet valve (20) that opens one-way into the bottle body (3). The air inlet head (9) is inserted into the snap-fit ​​groove (10) and then opens the one-way air inlet valve (20).

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