Aerospace sealed cabin pressure adjusting device

Abstract

The utility model relates to the technical field of aerospace, in particular to a pressure adjusting device for an aerospace sealed cabin. Comprising a device body, the two ends of the device body are each provided with a set of mounting ends and a set of connecting parts, a rectangular baffle is arranged at one end of the device body, a control pipeline is arranged in the device body, and a plurality of sets of air leakage holes are symmetrically formed in the surface of the control pipeline; a dustproof filter screen is arranged in the device body, two sets of pressure sensors are symmetrically arranged at one end of the control pipeline, a movable sealing plug is arranged in the control pipeline, an air inlet channel is formed in the movable sealing plug in a penetrating mode, and the two ends of the movable sealing plug are each provided with a set of rubber plug pieces. And two groups of electric telescopic rods are arranged in the control pipeline. According to the embodiment of the invention, the device body can be mounted with ventilation pipelines with different sizes, so that the practicability of the equipment is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of aerospace, and particularly relates to a pressure regulating device for an aerospace sealed cabin. Background Art

[0002] The ventilation system in a sealed cabin refers to an air circulation system composed of a ventilator, a silencer, ventilation ducts, and a gas distribution system. Due to the microgravity environment existing in space navigation, the natural convection phenomenon of air in the crew cabin disappears, and astronauts must rely on ventilation to dissipate heat. The main parameters of the microclimate in the cabin are temperature, humidity, and air flow velocity. To maintain an appropriate air flow velocity, a complete ventilation system must be set up, and the ventilation ducts of the ventilation system are particularly important.

[0003] After retrieval, in the prior art, Chinese Patent Publication No.: CN220826646U, Authorization Date: April 23, 2024, discloses a pressure regulating device for a ventilation duct of a ship cabin, including: the main body of the ventilation duct, a pressure regulating component is fixedly arranged inside the main body, and a control component is arranged on one side of the pressure regulating component. Through the setting of the pressure regulating component, when the air pressure inside the main body increases, the air pressure will push the piston block to slide relative to the extension pipe towards the fixed plate side, and the movement of the piston block drives the limit spring to compress relative to the fixed plate. When the piston block moves to one side of the air release hole, the gas inside the main body is discharged, slowing down the air pressure inside the main body. When the pressure sensor monitors that the air pressure inside the main body space is too high, the control motor is started, and the driving gear cooperates with the driven gear to make the control pipe rotate relative to the extension pipe, so that the air release groove communicates with the control groove, ensuring that a ventilation path is formed on the side wall of the extension pipe, and the excess gas is discharged through the air release groove, reducing the air pressure inside the main body.

[0004] However, this device still has the following defects: Although the above embodiment achieves the effect of automatic pressure regulation under limited air pressure changes. However, the installation of this device for pipes of different sizes has limitations, and an internal motor will generate noise during use. Content of the Utility Model

[0005] In view of the above problems, the utility model provides a pressure regulating device for an aerospace sealed cabin, including a device main body, a group of installation ends are arranged at both ends of the device main body, a group of connection components are respectively arranged at both ends of the device main body, a rectangular baffle is arranged at one end of the device main body, a control pipe is arranged inside the device main body, a number of groups of air release holes are symmetrically arranged on the surface of the control pipe, and a dust-proof filter screen is arranged inside the device main body;

[0006] The inner wall of the control pipeline is symmetrically provided with two groups of limiting rectangular blocks. At one end of the control pipeline, two groups of pressure sensors are symmetrically provided. An active sealing plug is arranged inside the control pipeline. A protective reinforcing sleeve is fitted inside the device body. A limiting piston rod is arranged inside the control pipeline. A limiting spring is sleeved on the surface of the limiting piston rod. An air inlet channel is penetrated and opened inside the active sealing plug. A group of rubber plug sheets are arranged at both ends of the active sealing plug. Two groups of electric telescopic rods are arranged inside the control pipeline.

[0007] Further, the device body is of a cylindrical structure, and both ends of the device body are of an open structure. The two installation ends are respectively and hermetically and movably clamped to the two ends of the device body. Installation threads are arranged on the surfaces of the two installation ends. The two connecting components are respectively connected to the two installation ends through the two installation threads.

[0008] Further, the rectangular baffle is located at the center of one end of the device body. The central axis of the control pipeline coincides with the central axis of the device body. A number of fixed clamping rods are arranged at one end of the control pipeline. All the fixed clamping rods are clamped on the surface of the rectangular baffle.

[0009] Further, a number of the air vent holes are all located at one end of the surface of the control pipeline. Two groups of clamping blocks are symmetrically arranged inside the device body. The two clamping blocks are both located at one end of the device body. The dust-proof filter screen is movably clamped to the two clamping blocks, and the dust-proof filter screen is fitted to one end of the control pipeline.

[0010] Further, the two groups of limiting rectangular blocks are both located at one end inside the control pipeline. The active sealing plug is movably clamped to the two groups of limiting rectangular blocks. The protective reinforcing sleeve is movably sleeved on the surface of the control pipeline.

[0011] Further, one end of the limiting piston rod is connected to the center of the surface of the active sealing plug. After the other end of the limiting piston rod penetrates the surface of the rectangular baffle, a limiting round block is arranged. One end of the limiting spring is connected to the active sealing plug, and the other end of the limiting spring is connected to the rectangular baffle.

[0012] Further, the air inlet channel is arranged in a T-shaped structure. The two groups of rubber plug sheets are respectively movably and fittingly connected to a number of the air vent holes. Two groups of fixed blocks are symmetrically arranged on the surface of the rectangular baffle. The two groups of electric telescopic rods are respectively located on both sides of the limiting spring.

[0013] Further, one end of the two groups of electric telescopic rods is respectively connected to the two groups of fixed blocks. The output ends of the two groups of electric telescopic rods are both in transmission connection with the surface of the active sealing plug, and the two groups of electric telescopic rods are both electrically connected to the two groups of pressure sensors.

[0014] The beneficial effects of the utility model are:

[0015] 1. A set of mounting terminals are provided at both ends of the device body, and the two sets of mounting terminals are respectively sealed and movably connected with the two ends of the device body. A set of connecting parts are respectively provided at both ends of the device body, and the two sets of connecting parts are connected with the two sets of mounting terminals through two sets of mounting threads. The device body can be installed with ventilation ducts of different sizes while achieving the effect of reducing the installation limitations of the equipment.

[0016] 2. An air intake passage is opened through the inside of the movable sealing plug, and a group of rubber plugs are provided at both ends of the movable sealing plug. The two groups of rubber plugs are movably fitted and connected with a number of air leakage holes respectively. When the pressure inside the sealed cabin lifts up the two groups through the air intake passage, the sealing performance of the two groups of rubber plugs and the number of air leakage holes is improved, while the practicality of the equipment is improved.

[0017] 3. Two sets of electric telescopic rods are electrically connected to two sets of pressure sensors. When the pressure is too high, the two sets of electric telescopic rods drive the movable sealing plug to move, deviate from the fitting position with several sets of air leakage holes, and release the pressure inside the sealed cabin. A dust filter is provided inside the device body, and the dust filter is movably connected with the two sets of card blocks, and then the dust filter is fitted with one end of the control pipe. This can prevent external dust and hair from entering the device body to affect the normal use of the equipment while achieving the effect of improving the safety of equipment use.

[0018] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure according to an embodiment of the utility model is shown;

[0021] Figure 2 A schematic cross-sectional view of a device body according to an embodiment of the utility model is shown;

[0022] Figure 3 Shows a schematic cross-sectional view of a movable seal plug according to an embodiment of the present invention;

[0023] Figure 4 Shows an enlarged schematic view of the structure at position A according to an embodiment of the present invention.

[0024] In the figure: 1, device body; 2, installation end; 3, installation thread; 4, connection component; 5, rectangular baffle; 6, fixed clamping rod; 7, control pipeline; 8, air vent; 9, dust-proof filter screen; 10, clamping block; 11, limiting rectangular block; 12, pressure sensor; 13, movable seal plug; 14, protective reinforcement sleeve; 15, limiting piston rod; 16, limiting round block; 17, limiting spring; 18, air inlet channel; 19, rubber plug piece; 20, fixed block; 21, electric telescopic rod. Detailed implementation manners

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. 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.

[0026] The embodiments of the present invention provide an aerospace seal cabin pressure regulating device, including a device body 1; by way of example, as Figures 1-4 shown.

[0027] The device body 1 is of a cylindrical structure, and both ends of the device body 1 are of an open structure. A set of installation ends 2 are provided at both ends of the device body 1. The two sets of installation ends 2 are respectively movably clamped to both ends of the device body 1. Installation threads 3 are provided on the surfaces of the two sets of installation ends 2. A set of connection components 4 are respectively provided at both ends of the device body 1. The two sets of connection components 4 are respectively connected to the two sets of installation ends 2 through the two sets of installation threads 3;

[0028] Sealing rings are provided at the connection parts of the two sets of connection components 4 and the two sets of installation ends 2. A rectangular baffle 5 is provided at one end of the device body 1. The rectangular baffle 5 is located at the center of one end of the device body 1. A control pipeline 7 is provided inside the device body 1. The central axis of the control pipeline 7 coincides with the central axis of the device body 1. A number of fixed clamping rods 6 are provided at one end of the control pipeline 7. The number of fixed clamping rods 6 are all clamped on the surface of the rectangular baffle 5;

[0029] The control pipe 7 is symmetrically provided with a plurality of groups of air leakage holes 8, and the plurality of groups of air leakage holes 8 are all located at one end of the surface of the control pipe 7. The device body 1 is symmetrically provided with two groups of clamping blocks 10, and the two groups of clamping blocks 10 are both located at one end of the device body 1. The device body 1 is provided with a dust filter 9, and the dust filter 9 is movably clamped with the two groups of clamping blocks 10, and the dust filter 9 is fitted with one end of the control pipe 7.

[0030] The inner wall of the control pipe 7 is symmetrically provided with two groups of limiting rectangular blocks 11, and the two groups of limiting rectangular blocks 11 are both located at one end of the inner part of the control pipe 7. Two groups of pressure sensors 12 are symmetrically provided at one end of the control pipe 7. A movable sealing plug 13 is provided inside the control pipe 7, and the movable sealing plug 13 is movably connected with the two groups of limiting rectangular blocks 11. A protective reinforcement sleeve 14 is fitted inside the device body 1, and the protective reinforcement sleeve 14 is movably sleeved on the surface of the control pipe 7.

[0031] A limiting piston rod 15 is provided inside the control pipe 7, one end of the limiting piston rod 15 is connected to the center of the surface of the movable sealing plug 13, the other end of the limiting piston rod 15 penetrates the surface of the rectangular baffle 5 and is provided with a limiting round block 16, a limiting spring 17 is sleeved on the surface of the limiting piston rod 15, one end of the limiting spring 17 is connected to the movable sealing plug 13, and the other end of the limiting spring 17 is connected to the rectangular baffle 5;

[0032] An air inlet passage 18 is provided inside the movable sealing plug 13, and the air inlet passage 18 is arranged in a T-shaped structure. A group of rubber plugs 19 are provided at both ends of the movable sealing plug 13, and the two groups of rubber plugs 19 are respectively movably connected with a plurality of groups of air leakage holes 8. Two groups of fixing blocks 20 are symmetrically provided on the surface of the rectangular baffle 5, and two groups of electric telescopic rods 21 are provided inside the control pipe 7, and the two groups of electric telescopic rods 21 are respectively located on both sides of the limit spring 17;

[0033] One end of the two groups of electric telescopic rods 21 are respectively connected to the two groups of fixed blocks 20, the output ends of the two groups of electric telescopic rods 21 are transmission connected to the surface of the movable sealing plug 13, and the two groups of electric telescopic rods 21 are electrically connected to the two groups of pressure sensors 12.

[0034] Specifically, a set of mounting ends 2 are provided at both ends of the device body 1, and the two sets of mounting ends 2 are respectively sealed and movably connected with the two ends of the device body 1, and a set of connecting components 4 are respectively provided at both ends of the device body 1, and the two sets of connecting components 4 are connected with the two sets of mounting ends 2 through two sets of mounting threads 3, so that the device body 1 can be installed with ventilation ducts of different sizes, thereby reducing the installation limitations of the equipment;

[0035] An air intake passage 18 is provided through the interior of the movable sealing plug 13. A set of rubber plug pieces 19 are provided at both ends of the movable sealing plug 13. The two sets of rubber plug pieces 19 are respectively in movable fit connection with a number of air leakage holes 8. When the pressure inside the sealed cabin jacks up the two sets through the air intake passage 18, the sealing performance between the two sets of rubber plug pieces 19 and the number of air leakage holes 8 is improved.

[0036] Both of the two electric telescopic rods 21 are electrically connected to the two pressure sensors 12. When the pressure is too high, the two electric telescopic rods 21 drive the movable sealing plug 13 to move, deviating from the fitting position with the number of air leakage holes 8, so as to release the pressure inside the sealed cabin. A dust-proof filter net 9 is provided inside the device body 1. The dust-proof filter net 9 is movably clamped with the two clamping blocks 10, and then the dust-proof filter net 9 is arranged in fit with one end of the control pipeline 7, which can prevent external dust and fluff from entering the device body 1 and affecting the normal use of the equipment.

[0037] The working principle of a pressure regulating device for an aerospace sealed cabin proposed by an embodiment of the present utility model is as follows:

[0038] A set of installation ends 2 are provided at both ends of the device body 1. The two sets of installation ends 2 are respectively in sealed movable clamping connection with both ends of the device body 1. A set of connection components 4 are respectively provided at both ends of the device body 1. Then the two sets of connection components 4 are both connected to the two installation ends 2 through the two installation threads 3, which can install the device body 1 with ventilation pipelines of different sizes and reduce the installation limitations of the equipment.

[0039] An air intake passage 18 is provided through the interior of the movable sealing plug 13. A set of rubber plug pieces 19 are provided at both ends of the movable sealing plug 13. The two sets of rubber plug pieces 19 are respectively in movable fit connection with a number of air leakage holes 8. When the pressure inside the sealed cabin jacks up the two sets through the air intake passage 18, the sealing performance between the two sets of rubber plug pieces 19 and the number of air leakage holes 8 is improved.

[0040] Both of the two electric telescopic rods 21 are electrically connected to the two pressure sensors 12. When the pressure is too high, the two electric telescopic rods 21 drive the movable sealing plug 13 to move, deviating from the fitting position with the number of air leakage holes 8, so as to release the pressure inside the sealed cabin. A dust-proof filter net 9 is provided inside the device body 1. The dust-proof filter net 9 is movably clamped with the two clamping blocks 10, and then the dust-proof filter net 9 is arranged in fit with one end of the control pipeline 7, which can prevent external dust and fluff from entering the device body 1 and affecting the normal use of the equipment.

[0041] Although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An aerospace sealed cabin pressure regulating device, comprising a device body (1), characterized in that: A group of mounting terminals (2) are provided at both ends of the device body (1), a group of connecting components (4) are provided at both ends of the device body (1), a rectangular baffle (5) is provided at one end of the device body (1), a control pipe (7) is provided inside the device body (1), a plurality of groups of air leakage holes (8) are symmetrically opened on the surface of the control pipe (7), and a dust filter (9) is provided inside the device body (1); Two groups of limiting rectangular blocks (11) are symmetrically arranged on the inner wall of the control pipe (7), two groups of pressure sensors (12) are symmetrically arranged at one end of the control pipe (7), a movable sealing plug (13) is arranged inside the control pipe (7), a protective reinforcement sleeve (14) is fitted inside the device body (1), a limiting piston rod (15) is arranged inside the control pipe (7), a limiting spring (17) is sleeved on the surface of the limiting piston rod (15), an air intake channel (18) is opened through the inside of the movable sealing plug (13), a group of rubber plugs (19) are arranged at both ends of the movable sealing plug (13), and two groups of electric telescopic rods (21) are arranged inside the control pipe (7).

2. The aerospace sealed cabin pressure regulating device according to claim 1, characterized in that: The device body (1) is a cylindrical structure, and both ends of the device body (1) are open structures. The two groups of mounting ends (2) are respectively sealed and movably connected to the two ends of the device body (1). The surfaces of the two groups of mounting ends (2) are provided with mounting threads (3). The two groups of connecting components (4) are connected to the two groups of mounting ends (2) via the two groups of mounting threads (3).

3. The aerospace sealed cabin pressure regulating device according to claim 2, characterized in that: The rectangular baffle (5) is located at the center of one end of the device body (1), the central axis of the control pipe (7) coincides with the central axis of the device body (1), and one end of the control pipe (7) is provided with a plurality of groups of fixed clamping rods (6), and the plurality of groups of fixed clamping rods (6) are all clamped on the surface of the rectangular baffle (5).

4. The aerospace sealed cabin pressure regulating device according to claim 1, characterized in that: A plurality of groups of the air leakage holes (8) are all located at one end of the surface of the control pipe (7); two groups of snap-in blocks (10) are symmetrically arranged inside the device body (1); the two groups of snap-in blocks (10) are both located at one end of the device body (1); the dustproof filter (9) is movably snap-connected with the two groups of snap-in blocks (10), and the dustproof filter (9) is fitted with one end of the control pipe (7).

5. The aerospace sealed cabin pressure regulating device according to claim 2, characterized in that: The two groups of limiting rectangular blocks (11) are both located at one end inside the control pipe (7), the movable sealing plug (13) is movably connected to the two groups of limiting rectangular blocks (11), and the protective reinforcement sleeve (14) is movably sleeved on the surface of the control pipe (7).

6. The aerospace sealed cabin pressure regulating device according to claim 1, characterized in that: One end of the limiting piston rod (15) is connected to the center of the surface of the movable sealing plug (13), and the other end of the limiting piston rod (15) penetrates the surface of the rectangular baffle (5) and is provided with a limiting round block (16). One end of the limiting spring (17) is connected to the movable sealing plug (13), and the other end of the limiting spring (17) is connected to the rectangular baffle (5).

7. The aerospace sealed cabin pressure regulating device according to claim 2, characterized in that: The air inlet channel (18) is arranged in a T-shaped structure, the two groups of rubber plugs (19) are respectively movably connected to a plurality of groups of air leakage holes (8), the surface of the rectangular baffle (5) is symmetrically provided with two groups of fixing blocks (20), and the two groups of electric telescopic rods (21) are respectively located on both sides of the limit spring (17).

8. The aerospace sealed cabin pressure regulating device according to claim 2, characterized in that: One end of the two groups of electric telescopic rods (21) is respectively connected to the two groups of fixed blocks (20), the output ends of the two groups of electric telescopic rods (21) are both transmission-connected to the surface of the movable sealing plug (13), and the two groups of electric telescopic rods (21) are both electrically connected to the two groups of pressure sensors (12).

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