Intelligent cabin pressurizing and oxygenating equipment based on high altitude

Abstract

The invention belongs to the technical field of intelligent cabin oxygen supplementation, and discloses intelligent cabin pressurizing and oxygen supplementation equipment based on high altitude, which comprises an oxygen pressurizer, the input end of the oxygen pressurizer is communicated with a first pipeline, and one end of a buffer pipeline is provided with a buffer protection mechanism. According to the device, after an oxygen supercharger converts low-pressure oxygen into high-pressure oxygen, the high-pressure oxygen is input into a cabin through a gas conveying pipeline, when the internal converted oxygen pressure intensity is too large, redundant oxygen with the too large pressure intensity enters the interior of a buffer pipeline and makes contact with a valve clack to extrude the valve clack, the valve clack rotates, and therefore the oxygen pressure intensity is reduced; after the valve clack rotates, oxygen can pass through, resistance is provided when the limiting piston moves, then resistance is provided for the valve clack, the valve clack can be buffered when being extruded by the oxygen, and the oxygen can pass through only when the resistance is larger than the resistance provided by the limiting piston; in this way, the purpose of buffering supplied oxygen when the device supplies oxygen to the intelligent cabin is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of oxygen supplementation for intelligent cabins, and specifically relates to a pressurized oxygen supplementation device for intelligent cabins based on high altitude. Background Art

[0002] Due to its special geographical environment and climatic conditions, high altitude areas pose unique challenges to human health. As the altitude increases, the air gradually becomes thinner, and the oxygen content decreases significantly, resulting in varying degrees of hypoxia symptoms in the human body. Therefore, it is necessary to design an intelligent cabin that can not only provide a continuous and stable pressurized oxygen supplementation environment but also adapt to the harsh climatic conditions on the plateau, enabling the human body to adapt to the high altitude environment.

[0003] When the existing pressurized oxygen supplementation devices applied in the cabin convert the oxygen in the low-pressure environment on the plateau into high-pressure oxygen suitable for the human body, after pressurization, the pressure discharged during oxygen supply in the intelligent cabin is too high and the flow rate is too fast, which easily causes the problem of uneven oxygen supply in the intelligent cabin.

[0004] It is necessary to buffer the oxygen with too high pressure converted by the oxygen booster to prevent uneven oxygen distribution in the cabin due to inconsistent rates when inputting into the intelligent cabin, making the people in the cabin feel uncomfortable and experiencing varying degrees of hypoxia symptoms. Summary of the Invention

[0005] To solve the problems raised in the above background art, the present invention provides a pressurized oxygen supplementation device for intelligent cabins based on high altitude.

[0006] To achieve the above object, the present invention provides the following technical solution: A pressurized oxygen supplementation device for intelligent cabins based on high altitude, including an oxygen booster. The input end of the oxygen booster is connected to a first pipeline. One end of the first pipeline is provided with a solenoid valve. One end of the first pipeline is connected to a first buffer cylinder. One end of the oxygen booster is connected to a buffer pipeline. The output end of the oxygen booster is connected to a gas transmission pipeline. One end of the buffer pipeline is equipped with a buffer protection mechanism;

[0007] The buffer protection mechanism includes a pressure relief cylinder, a valve stem, and a valve flap. The pressure relief cylinder is fixed at the output end of the buffer pipeline. The valve stem is movably connected inside the pressure relief cylinder. A valve flap is fixed at the bottom end of the valve stem. A transmission gear is fixed outside the valve stem. A limiting piston is movably connected inside the pressure relief cylinder. A transmission block is fixed at one end of the limiting piston.

[0008] Preferably, the pressure relief cylinder and the valve stem are rotatably connected. The diameter of the valve flap is equal to the inner diameter of the bottom of the pressure relief cylinder. There are two groups of transmission gears, and the transmission gears are symmetrically distributed about the central axis of the top end of the pressure relief cylinder.

[0009] Preferably, one end of the transmission block is fixed with teeth, the teeth are arranged at equal intervals, several groups of teeth at equal intervals are arranged outside the transmission gear, and the transmission gear is meshed with the transmission block.

[0010] Preferably, there are two sets of the transmission block and the limit piston, the transmission block and the limit piston are symmetrically distributed about the central axis of the valve stem, an adjusting mechanism is arranged at one end of the limit piston, and a limiting mechanism is installed at the top end of the valve stem.

[0011] Preferably, the adjusting mechanism includes a first return spring, a pressing disc and a transmission rod. The first return spring is fixed outside the limit piston, one end of the first return spring is fixed with a pressing disc, one end of the pressing disc is fixed with a transmission rod, and a sealing ring is sleeved at one end of the limit piston.

[0012] Preferably, there are four sets of the first return springs, the first return springs are equally spaced about the central axis of the limit piston, the first return springs are used to press the limit piston and keep it in a moving trend towards the center of the pressure relief cylinder, the transmission rod is movably connected to the pressure relief cylinder, and the shape of the sealing ring is equal to the slot of the limit piston.

[0013] Preferably, the limiting mechanism includes a mounting seat, a limiting plate and a first limiting rod. The mounting seat is fixed at the top end of the valve stem, the limiting plate is movably connected inside the mounting seat, a first limiting rod is fixed at the bottom of the limiting plate, a second return spring is fixed at the bottom end of the limiting plate, a limiting seat is fixed at the top end of the pressure relief cylinder, a second limiting rod is fixed at the top end of the limiting seat, a limiting disc is fixed at the top end of the second limiting rod, a movable disc is sleeved outside the second limiting rod, a limiting slot is opened at the bottom end of the first limiting rod, a mounting rod is movably connected inside the first limiting rod, a third return spring is sleeved outside the mounting rod, and a limiting block is fixed at one end of the mounting rod.

[0014] Preferably, there are two sets of the limiting plates, the limiting plates are symmetrically distributed about the central axis of the mounting seat, there are two sets of the second return springs, the second return springs are symmetrically distributed about the central axis of the limiting plate, the second return springs are used to press the limiting plate and keep it in an upward moving trend, there are four sets of the limiting seats, and the second return springs are equally spaced about the central axis of the mounting seat.

[0015] Preferably, the diameter of the limiting disc is smaller than the diameter of the movable disc, the movable disc is slidably connected to the outer wall of the second limiting rod, there are two sets of the mounting rods, the mounting rods are symmetrically distributed about the central axis of the first limiting rod, and the third return spring is used to press the mounting rod and keep it in a moving trend towards the center position of the limiting slot.

[0016] Preferably, one end of the buffer protection mechanism is communicated with a second pipeline, a one-way valve is installed at one end of the second pipeline, and the output end of the second pipeline is communicated with a second buffer cylinder.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] Through the cooperation of structures such as a pressure relief cylinder, a valve stem, and a valve flap, the device of the present invention enables the low-pressure oxygen to be converted into high-pressure oxygen by an oxygen booster and then input into the cabin through a gas transmission pipeline. When the pressure of the internally converted oxygen is too high, the excess oxygen with too high pressure enters the interior of the buffer pipeline and contacts the valve flap, squeezing the valve flap, causing the valve flap to rotate. After the valve flap rotates, oxygen can pass through. The rotation of the valve flap and the valve stem drives the transmission gear to rotate, and the shape of the transmission gear drives the two transmission blocks and the limit piston to move towards each other. Since the limit piston is in contact with the interior of the pressure relief cylinder, resistance can be provided for the movement of the limit piston, thereby providing resistance for the valve flap, enabling the valve flap to buffer the oxygen when it is squeezed by the oxygen, and only when the resistance provided by the limit piston is exceeded can the oxygen pass through, so as to achieve the purpose of facilitating the device to buffer the supplied oxygen when supplying oxygen to the intelligent cabin.

[0019] Through the cooperation of structures such as a first return spring, a pressing disc, and a transmission rod, the device of the present invention can squeeze the limit piston through the first return spring, which can further increase the resistance when the limit piston moves, thereby strengthening the pressure required for the bottom valve flap to rotate. Further, by moving the transmission rod into the pressure relief cylinder, the transmission rod drives the pressing disc to press the first return spring inward to store energy, thereby strengthening the resistance provided by the first return spring for the limit piston. Adjusting the position of the first return spring away from the limit piston can reduce the resistance provided for the limit piston, thereby adjusting the pressure required for the valve flap to be squeezed and rotated, so as to achieve the purpose of facilitating the device to adjust the buffering intensity of the buffer assembly.

[0020] Through the cooperation of structures such as a mounting seat, a limit plate, and a first limit rod, the device of the present invention enables the buffer pipeline to be opened or closed for a long time when needed. Press the limit plate, causing the first limit rod to move downward. After the limit disc contacts and passes through the limit block, the limit disc can limit the limit block through its own shape, thereby preventing the first limit rod from moving upward and disengaging, so that the angle of the valve flap is in a long-term open or closed state. Further, when it is necessary to switch it to the buffer state, continue to press the limit plate to drive the limit block to continue to move downward and contact the movable disc, and after passing through the movable disc, the movable disc can be pushed up to contact the limit disc. At this time, the limit block is pulled by the second return spring to reset, so as to disengage, so as to achieve the purpose of facilitating the device to quickly switch the buffer assembly to long-term open or closed. Description of the Drawings

[0021] Figure 1 Schematic diagram of the overall structure of the present invention;

[0022] Figure 2 Schematic diagram of the overall rear view structure of the present invention;

[0023] Figure 3 Schematic diagram of the buffer assembly structure of the present invention;

[0024] Figure 4 Schematic diagram of the limiting mechanism structure of the present invention;

[0025] Figure 5 Schematic diagram of the pressure relief and protection mechanism structure of the present invention;

[0026] Figure 6 Schematic diagram of the sectional structure of the pressure relief and protection mechanism of the present invention;

[0027] Figure 7 Schematic diagram of the partial top view structure of the pressure relief and protection mechanism of the present invention;

[0028] Figure 8 Schematic diagram of the partial structure of the limiting mechanism of the present invention;

[0029] Figure 9 Schematic diagram of the sectional structure of the limiting mechanism of the present invention;

[0030] Figure 10 Of the present invention Figure 9 Enlarged schematic diagram of the partial sectional structure at position A.

[0031] In the figure: 1. Oxygen booster; 2. First pipeline; 3. Solenoid valve; 4. First buffer cylinder; 5. Buffer pipeline; 6. Buffer protection mechanism; 601. Pressure relief cylinder; 602. Valve stem; 603. Valve flap; 604. Transmission gear; 605. Transmission block; 606. Limiting piston; 7. Adjusting mechanism; 701. First return spring; 702. Extrusion disc; 703. Transmission rod; 704. Sealing ring; 8. Limiting mechanism; 801. Mounting seat; 802. Limiting plate; 803. First limiting rod; 804. Second return spring; 805. Limiting seat; 806. Second limiting rod; 807. Limiting disc; 808. Movable disc; 809. Limiting groove; 810. Mounting rod; 811. Third return spring; 812. Limiting block; 9. Second pipeline; 10. Check valve; 11. Second buffer cylinder; 12. Gas transmission pipeline. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] As Figures 1 to 10 shown, the present invention provides a smart cabin pressurization and oxygen supplementation device based on high altitude, including an oxygen booster 1. The input end of the oxygen booster 1 is connected to a first pipeline 2. One end of the first pipeline 2 is provided with a solenoid valve 3. One end of the first pipeline 2 is connected to a first buffer cylinder 4. One end of the oxygen booster 1 is connected to a buffer pipeline 5. The output end of the oxygen booster 1 is connected to an air delivery pipeline 12. One end of the buffer pipeline 5 is equipped with a buffer protection mechanism 6. One end of the buffer protection mechanism 6 is connected to a second pipeline 9. One end of the second pipeline 9 is equipped with a one-way valve 10. The output end of the second pipeline 9 is connected to a second buffer cylinder 11.

[0034] Adopting the above solution: The first buffer cylinder 4 collects low-pressure oxygen and opens the solenoid valve 3 to input it into the interior of the oxygen booster 1 through the first pipeline 2. The oxygen booster 1 generates pressurization of oxygen by the area difference between the driving piston and the pressurizing piston, and after pressurization, it is input into the smart cabin through the air delivery pipeline 12. After the oxygen pressure converted by the oxygen booster 1 is greater than the value set by the valve flap 603, it enters the interior of the second buffer cylinder 11 through the second pipeline 9 for buffer pressure reduction, and after buffering, oxygen with an appropriate pressure is input into the smart cabin, so that the oxygen pressure in the air delivery pipeline 12 is the same as that of the oxygen entering the smart cabin after being buffered by the second buffer cylinder 11.

[0035] As Figures 1 to 10 shown, the buffer protection mechanism 6 includes a pressure relief cylinder 601, a valve rod 602, and a valve flap 603. The pressure relief cylinder 601 is fixed at the output end of the buffer pipeline 5. The valve rod 602 is movably connected inside the pressure relief cylinder 601. The bottom end of the valve rod 602 is fixed with a valve flap 603. A transmission gear 604 is fixed outside the valve rod 602. The pressure relief cylinder 601 and the valve rod 602 are rotatably connected. The diameter of the valve flap 603 is equal to the inner diameter of the bottom of the pressure relief cylinder 601. There are two groups of transmission gears 604, and the transmission gears 604 are symmetrically distributed about the central axis of the top end of the pressure relief cylinder 601. A limiting piston 606 is movably connected inside the pressure relief cylinder 601. One end of the limiting piston 606 is fixed with a transmission block 605. One end of the transmission block 605 is fixed with teeth, and the teeth are arranged at equal intervals. A number of groups of teeth at equal intervals are arranged outside the transmission gear 604, and the transmission gear 604 and the transmission block 605 are meshed.

[0036] As Figures 1 to 10As shown in the figure, there are two sets of driving blocks 605 and limiting pistons 606. The driving blocks 605 and the limiting pistons 606 are symmetrically distributed about the central axis of the valve stem 602. One end of the limiting piston 606 is provided with an adjusting mechanism 7, and the top of the valve stem 602 is provided with a limiting mechanism 8.

[0037] With the above solution: After the valve flap 603 rotates, oxygen can pass through. The rotation of the valve flap 603 and the valve stem 602 drives the transmission gear 604 to rotate, and the shape of the transmission gear 604 drives the two sets of driving blocks 605 and the limiting pistons 606 to move towards each other. Since the limiting piston 606 is in contact connection with the inside of the pressure relief cylinder 601, resistance can be provided for the movement of the limiting piston 606, and thus resistance can be provided for the valve flap 603, so that the valve flap 603 can buffer when being squeezed by oxygen, and oxygen can only pass through when the force is greater than the resistance provided by the limiting piston 606.

[0038] As Figures 1 to 10 shown in the figure, the adjusting mechanism 7 includes a first return spring 701, a pressing disc 702 and a transmission rod 703. The first return spring 701 is fixed outside the limiting piston 606. One end of the first return spring 701 is fixed with a pressing disc 702, and one end of the pressing disc 702 is fixed with a transmission rod 703. A sealing ring 704 is sleeved on one end of the limiting piston 606. There are four groups of first return springs 701, and the first return springs 701 are equidistantly distributed about the central axis of the limiting piston 606. The first return spring 701 is used to press the limiting piston 606 and keep it in a moving trend towards the center of the pressure relief cylinder 601. The transmission rod 703 is movably connected to the pressure relief cylinder 601, and the shape of the sealing ring 704 is equal to the slot of the limiting piston 606.

[0039] With the above solution: The first return spring 701 presses the limiting piston 606 to strengthen the pressure required for the bottom valve flap 603 to rotate. By moving the transmission rod 703 into the pressure relief cylinder 601, the transmission rod 703 drives the pressing disc 702 to press the first return spring 701 inward to store energy, thereby strengthening the resistance provided by the first return spring 701 for the limiting piston 606. Adjusting the position of the first return spring 701 away from the limiting piston 606 can reduce the resistance provided for the limiting piston 606.

[0040] As Figures 1 to 10As shown, the limiting mechanism 8 includes a mounting base 801, a limiting plate 802, and a first limiting rod 803. The mounting base 801 is fixed to the top end of the valve stem 602. The limiting plate 802 is movably connected inside the mounting base 801. A first limiting rod 803 is fixed to the bottom of the limiting plate 802. A second return spring 804 is fixed to the bottom end of the limiting plate 802. There are two sets of limiting plates 802, and the limiting plates 802 are symmetrically distributed about the central axis of the mounting base 801. There are two sets of second return springs 804, and the second return springs 804 are symmetrically distributed about the central axis of the limiting plate 802. The second return spring 804 is used to press the limiting plate 802 and keep it in a trend of moving upward. There are four sets of limiting seats 805, and the second return springs 804 are equidistantly distributed about the central axis of the mounting base 801.

[0041] As Figures 1 to 10 As shown, a limiting seat 805 is fixed to the top end of the pressure relief cylinder 601. A second limiting rod 806 is fixed to the top end of the limiting seat 805. A limiting disk 807 is fixed to the top end of the second limiting rod 806. A movable disk 808 is sleeved outside the second limiting rod 806. A limiting groove 809 is opened at the bottom end of the first limiting rod 803. A mounting rod 810 is movably connected inside the first limiting rod 803. A third return spring 811 is sleeved outside the mounting rod 810. A limiting block 812 is fixed to one end of the mounting rod 810. The diameter of the limiting disk 807 is smaller than the diameter of the movable disk 808. The movable disk 808 is slidably connected to the outer wall of the second limiting rod 806. There are two sets of mounting rods 810, and the mounting rods 810 are symmetrically distributed about the central axis of the first limiting rod 803. The third return spring 811 is used to press the mounting rod 810 and keep it in a trend of moving towards the center position of the limiting groove 809.

[0042] With the above solution: By pressing the limiting plate 802, the first limiting rod 803 moves downward. After the limiting disk 807 contacts and passes through the limiting block 812, the limiting disk 807 can limit the limiting block 812 through its own shape, thereby preventing the first limiting rod 803 from moving upward and disengaging, so that the angle of the valve flap 603 is in a long-term open or closed state. When it is necessary to switch it to a buffer state, continue to press the limiting plate 802 to drive the limiting block 812 to continue moving downward to contact the movable disk 808, and after passing through the movable disk 808, it can push up the movable disk 808 to contact the limiting disk 807. At this time, the limiting block 812 is pulled by the second return spring 804 to reset.

[0043] Working principle and usage process of the present invention: The first buffer cylinder 4 collects low-pressure oxygen and opens the solenoid valve 3 to input it into the oxygen booster 1 through the first pipeline 2. The oxygen booster 1 generates pressure on the oxygen by the area difference between the driving piston and the boosting piston, and after pressurization, it is input into the intelligent cabin through the gas transmission pipeline 12. After the oxygen pressure converted by the oxygen booster 1 is greater than the value set by the valve flap 603, it enters the inside of the second buffer cylinder 11 through the second pipeline 9 for buffer pressure reduction, and after buffering, it inputs oxygen with appropriate pressure into the intelligent cabin, so that the oxygen pressure in the gas transmission pipeline 12 and the oxygen entering the intelligent cabin after being buffered by the second buffer cylinder 11 is the same. After the oxygen booster 1 converts low-pressure oxygen into high-pressure oxygen, it is input into the cabin through the gas transmission pipeline 12. When the internally converted oxygen pressure is too high, the excessive oxygen with too high pressure enters the inside of the buffer pipeline 5 and contacts the valve flap 603, squeezing the valve flap 603, causing the valve flap 603 to rotate. After the valve flap 603 rotates, oxygen can pass through. The rotation of the valve flap 603 and the valve rod 602 drives the transmission gear 604 to rotate, and the shape of the transmission gear 604 drives the two groups of transmission blocks 605 and the limit piston 606 to move towards each other. Since the limit piston 606 is in contact connection with the inside of the pressure relief cylinder 601, it can provide resistance for the movement of the limit piston 606, and thus provide resistance for the valve flap 603, so that the valve flap 603 can buffer when being squeezed by oxygen, and only when it is greater than the resistance provided by the limit piston 606 can oxygen pass through, so that when the oxygen pressure discharged by the oxygen booster 1 is too high, it automatically enters the inside of the second buffer cylinder 11 for buffering and then is input into the intelligent cabin.

[0044] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0045] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-altitude-based intelligent cabin pressurization and oxygen supplementation device, comprising an oxygen booster (1), characterized in that: The input end of the oxygen booster (1) is connected to a first pipeline (2). One end of the first pipeline (2) is provided with a solenoid valve (3). One end of the first pipeline (2) is connected to a first buffer cylinder (4). One end of the oxygen booster (1) is connected to a buffer pipeline (5). The output end of the oxygen booster (1) is connected to a gas transmission pipeline (12). One end of the buffer pipeline (5) is equipped with a buffer protection mechanism (6). The buffer protection mechanism (6) includes a pressure relief cylinder (601), a valve rod (602) and a valve flap (603). The pressure relief cylinder (601) is fixed at the output end of the buffer pipeline (5). The valve rod (602) is movably connected inside the pressure relief cylinder (601). A valve flap (603) is fixed at the bottom end of the valve rod (602). A transmission gear (604) is fixed outside the valve rod (602). A limit piston (606) is movably connected inside the pressure relief cylinder (601). A transmission block (605) is fixed at one end of the limit piston (606).

2. The intelligent cabin pressurization and oxygen supplementation device based on high altitude according to claim 1, wherein: The pressure relief cylinder (601) and the valve rod (602) are rotationally connected. The diameter of the valve flap (603) is equal to the inner diameter of the bottom of the pressure relief cylinder (601). There are two groups of transmission gears (604), and the transmission gears (604) are symmetrically distributed about the central axis of the top end of the pressure relief cylinder (601).

3. The intelligent cabin pressurization and oxygen supplementation device based on high altitude according to claim 1, wherein: One end of the transmission block (605) is fixed with teeth, and the teeth are arranged at equal intervals. There are several groups of teeth arranged at equal intervals outside the transmission gear (604), and the transmission gear (604) is meshed with the transmission block (605).

4. The intelligent cabin pressurization and oxygen supplementation device based on high altitude according to claim 1, characterized in that: There are two groups of the transmission block (605) and the limit piston (606), and the transmission block (605) and the limit piston (606) are symmetrically distributed about the central axis of the valve rod (602). An adjusting mechanism (7) is arranged at one end of the limit piston (606), and a limiting mechanism (8) is installed at the top end of the valve rod (602).

5. The intelligent cabin pressurization and oxygen supplementation device based on high altitude according to claim 4, characterized in that: The adjusting mechanism (7) includes a first return spring (701), a pressing disc (702) and a transmission rod (703). The first return spring (701) is fixed outside the limit piston (606). One end of the first return spring (701) is fixed with a pressing disc (702). One end of the pressing disc (702) is fixed with a transmission rod (703). A sealing ring (704) is sleeved at one end of the limit piston (606).

6. The intelligent cabin pressurization and oxygen supplementation device based on high altitude according to claim 5, characterized in that: There are four groups of the first return springs (701), and the first return springs (701) are equally spaced about the central axis of the limit piston (606). The first return spring (701) is used to press the limit piston (606) and keep it in a trend of moving towards the center of the pressure relief cylinder (601). The transmission rod (703) is movably connected to the pressure relief cylinder (601), and the shape of the sealing ring (704) is equal to the slot of the limit piston (606).

7. The intelligent cabin pressurization and oxygen supplementation device based on high altitude according to claim 4, characterized in that: The limiting mechanism (8) includes a mounting base (801), a limiting plate (802) and a first limiting rod (803). The mounting base (801) is fixed to the top end of the valve stem (602). The limiting plate (802) is movably connected inside the mounting base (801). The first limiting rod (803) is fixed to the bottom of the limiting plate (802). A second return spring (804) is fixed to the bottom end of the limiting plate (802). A limiting seat (805) is fixed to the top end of the pressure relief cylinder (601). A second limiting rod (806) is fixed to the top end of the limiting seat (805). A limiting disk (807) is fixed to the top end of the second limiting rod (806). A movable disk (808) is sleeved outside the second limiting rod (806). A limiting groove (809) is formed at the bottom end of the first limiting rod (803). A mounting rod (810) is movably connected inside the first limiting rod (803). A third return spring (811) is sleeved outside the mounting rod (810). A limiting block (812) is fixed to one end of the mounting rod (810).

8. The intelligent cabin pressurization and oxygen supplementation device based on high altitude according to claim 7, characterized in that: There are two groups of the limiting plates (802), and the limiting plates (802) are symmetrically distributed about the central axis of the mounting base (801). There are two groups of the second return springs (804), and the second return springs (804) are symmetrically distributed about the central axis of the limiting plate (802). The second return spring (804) is used to squeeze the limiting plate (802) and keep it in a trend of moving upward. There are four groups of the limiting seats (805), and the second return springs (804) are equally spaced about the central axis of the mounting base (801).

9. The intelligent cabin pressurization and oxygen supply device based on high altitude according to claim 7, characterized in that: The diameter of the limiting disk (807) is smaller than that of the movable disk (808). The movable disk (808) is slidably connected to the outer wall of the second limiting rod (806). There are two groups of the mounting rods (810), and the mounting rods (810) are symmetrically distributed about the central axis of the first limiting rod (803). The third return spring (811) is used to squeeze the mounting rod (810) and keep it in a trend of moving towards the center of the limiting groove (809).

10. The intelligent cabin pressurization and oxygen supply device based on high altitude according to claim 1, characterized in that: One end of the buffer protection mechanism (6) is communicated with a second pipeline (9). A one-way valve (10) is installed at one end of the second pipeline (9). The output end of the second pipeline (9) is communicated with a second buffer cylinder (11).

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