Long-term on-orbit air supply device for space resistance increasing ball

Abstract

A long-term on-orbit air supply device for a space resistance increasing ball aims at solving the problems that an existing active air supply device is large in mass, difficult to control, greatly affected by the environment and the like and is composed of a storage assembly, an air bag assembly, an inflation assembly and a structural assembly. Solid gas supplementing substances (such as pyrazole) are placed in the storage assembly, the gas flow is accurately controlled by detecting the internal pressure of the resistance increasing ball in real time, and stable gas supplementing of the resistance increasing ball is achieved. The device has the advantages of being light in weight, accurate in air supply, high in environmental adaptability and high in safety, the working performance of the resistance increasing ball can be effectively improved, the spacecraft orbit control cost is reduced, and the reliability and safety of orbit adjustment are enhanced.

Description

Technical Field

[0001] This invention relates to a gas replenishment device for long-term on-orbit operation of a space drag-increasing sphere, applicable to the gas replenishment dimension of a long-term on-orbit drag-increasing sphere, and belongs to the field of space flexible deployment structure technology in the aerospace field. Background Technology

[0002] In spacecraft orbit control, drag-increasing spheres are widely used as crucial tools for lowering spacecraft altitude and performing deorbiting operations. When a spacecraft completes its mission or requires orbital adjustments, drag-increasing spheres increase atmospheric drag, accelerating orbital decay and effectively reducing space debris generation, thus safeguarding the space environment.

[0003] However, current gas replenishment technology for space drag-increasing spheres has many problems. Traditional high-pressure gas storage tank replenishment requires carrying a large amount of high-pressure gas. The storage tanks themselves are heavy and occupy a significant amount of space inside the spacecraft, which not only greatly increases the launch cost but also adds to the difficulty of orbit maintenance. Furthermore, high-pressure gas is prone to leakage during long-term on-orbit operation, making it difficult to accurately control the replenishment volume and severely affecting the performance stability of the drag-increasing sphere. Summary of the Invention

[0004] This invention aims to solve the technical challenges of existing space drag-increasing sphere gas replenishment devices, such as large mass, large space occupation, difficulty in accurately controlling the gas replenishment volume, and severe susceptibility to environmental influences. It provides a gas replenishment device that achieves lightweight passive gas replenishment while ensuring stable operation of the drag-increasing sphere, and can adapt to the complex environment of long-term on-orbit operation. This device improves the performance of the drag-increasing sphere, reduces spacecraft orbit control costs, and enhances the reliability and safety of spacecraft orbit adjustments.

[0005] The technical solution of this invention is: A long-term on-orbit gas replenishment device for a space drag-increasing sphere includes: a storage component, a drag-increasing sphere, and a gas filling component; The inflation assembly is used to transfer the gas generated by the volatilization of the solid gas replenishment material in the storage assembly to the drag-increasing ball, thereby replenishing the drag-increasing ball with gas; During the gas replenishment process, the gas filling component monitors the gas pressure inside the drag-increasing ball in real time. Once the pressure reaches the rated value, the storage component stops replenishing the drag-increasing ball with gas.

[0006] Preferably, the storage assembly includes: a medicine storage box, a first through connector, and a second through connector; The storage box and the second straight connector are connected by welding; solid pyrazole is filled into the storage box through the second straight connector; the storage box is filled with solid pyrazole, and the gas is generated by the volatilization of pyrazole, thereby replenishing the gas for the drag-increasing ball; The medicine storage box is connected to the inflation assembly via the first straight connector.

[0007] Preferably, the air replenishment device further includes: structural components; The medicine storage box is fixedly mounted on the structural component; The medicine storage box is connected to the rectangular base plate by standard parts and threaded connection. DG-4 high temperature resistant adhesive is applied to the threaded connection to prevent loosening.

[0008] Preferably, the air replenishment device further includes: an air intake valve and a pressure measuring valve; The intake valve and pressure measuring valve are respectively fixedly mounted on the drag-increasing ball; The air inlet valve is connected to the storage box via the air inflation assembly and the first straight connector.

[0009] Preferably, the drag-increasing sphere is made by heat sealing a composite polyimide film.

[0010] Preferably, the inflation assembly includes: a solenoid valve, a first straight pipe, a bend, a second straight pipe, and a pressure sensor; One end of the bend is threaded with the intake valve, and the other end is threaded with the solenoid valve. The solenoid valve is placed on the structural component and is located between the first straight pipe and the bend. The pressure sensor and the pressure measuring valve are connected via a straight pipe to monitor the gas pressure inside the drag-increasing ball in real time.

[0011] Preferably, the material grade of the first straight pipe, the bend, and the second straight pipe is 5A06.

[0012] Preferably, the structural components include: a base plate and side plates; The side panels are vertically fixedly installed on the base plate; A medicine storage box is fixedly installed on the base plate, and a solenoid valve is placed on the base plate; Two round holes are machined on the side plate. These two round holes are used to fit the valve body of the intake valve and the pressure testing valve with clearance.

[0013] Preferably, the material grade of both the bottom plate and the side plate is 5A06.

[0014] The advantages of this invention compared to the prior art are: 1) Lightweight design: Compared with traditional high-pressure gas cylinders or complex liquid gas storage equipment, the storage components of this device are lighter and smaller in size while storing the same amount of replenishment gas, which effectively reduces the payload burden of the spacecraft, reduces launch costs, and saves more valuable space inside the spacecraft.

[0015] 2) Precise Gas Replenishment: The amount of volatile gas transported is controlled by a solenoid valve, and the internal pressure of the drag-increasing sphere is monitored by a pressure sensor, achieving precise control of the gas replenishment amount. Based on the spacecraft's orbital environment and the real-time requirements of the drag-increasing sphere, the gas replenishment flow rate is precisely adjusted to ensure the sphere is always in optimal working condition, improving the accuracy and reliability of spacecraft operation.

[0016] 3) High adaptability: It is relatively safe during storage and use, with no risk of explosion caused by high-pressure gas leakage, ensuring the stable operation of the gas replenishment device in different orbital environments and improving the safety of spacecraft in orbit. Attached Figure Description

[0017] Figure 1 This is a model diagram of the air replenishment device of the present invention. Detailed Implementation Plan The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings.

[0018] like Figure 1 As shown, the present invention relates to a long-term on-orbit gas replenishment device for a space drag-increasing sphere, which mainly consists of a storage component, a gasbag component, an inflation component, and a structural component.

[0019] The storage component includes: a medicine storage box 1, a first straight connector 2, and a second straight connector 3; in one embodiment of the present invention, the first straight connector 2 is an M14 straight connector, and the second straight connector 3 is an M27 straight connector.

[0020] The storage box 1 is a cubic empty box made of 5A06 stainless steel. The storage box 1 and the second straight connector 3 are connected by welding. The top of the storage box 1 is the second straight connector 3 for filling with the gas-filling material. The connector has a diameter of 14mm and is sealed with a plug and an outer nut.

[0021] The medicine storage box 1 is connected to the first straight pipe 4 via the first straight connector 2.

[0022] The storage component is fixedly mounted on the rectangular base plate 13. The base of the storage component is connected to the rectangular base plate 13 by four M4×18 screws, and DG-4 high-temperature resistant adhesive is applied to the threads to prevent loosening.

[0023] The airbag assembly includes: a drag-increasing ball 10, an air intake valve 9, and a pressure measuring valve 11; The drag-increasing ball 10 is made of composite polyimide film by heat sealing, and has a diameter of 2.5m when fully inflated.

[0024] One end of the resistance ball 10 is connected to the intake valve 9 and the pressure measuring valve 11, which have a total length of 55mm.

[0025] The intake valve 9 and the pressure testing valve 11 have the same structure and a nominal diameter of 4mm. They consist of a valve body, two clamping nuts, and one pressure plate.

[0026] When the resistance-increasing ball 10 is connected to the intake valve 9 and the pressure testing valve 11, it is pressed tightly onto the valve body by a pressure plate to prevent air leakage. Two clamping nuts are used to fix the valve body to the resistance-increasing ball 10, as well as the valve body and structural components. Both ends of the valve body have M14×1.5-6h external threads; one end is connected to the clamping nut, and the other end is connected to the solenoid valve (pressure sensor).

[0027] The inflation assembly includes: a solenoid valve 5, an inflation line and a pressure sensor 8; the inflation line includes: a first straight pipe 4, a bend 6 and a second straight pipe 7.

[0028] The inflation tubing is made of 5A06 stainless steel with a diameter of 4mm. The first straight pipe 4, the bend 6, and the second straight pipe 7 are all composed of an outer nut, a ball joint, and a conduit.

[0029] The inner thread of the outer nut on one side of the inflation line mates with the outer thread of the intake valve 9, and the ball joint contacts the 37° guide tube of the intake valve 9; the inner thread of the outer nut on the other side mates with the outer thread of the solenoid valve 5. The solenoid valve 5 is placed on the rectangular base plate 13, and is threadedly connected to the first straight connector 2 and the intake valve 9 by welding to M14 via straight pipe 4 and bent pipe 6, respectively. The pressure sensor 8 is connected to the pressure measuring valve 11 via straight pipe 7.

[0030] The structural components include a base plate 13 and side plates 12; both base plate 13 and side plates 12 are made of 5A06 stainless steel. Base plate 13 is a rectangular plate with 10 countersunk holes, each with an opening diameter of 8mm and a bottom hole diameter of 4mm. Four countersunk holes on one side are connected to the medicine storage box using M4×18 screws, while the six countersunk holes in the middle are connected to side plates 12 using M4×18 screws. The two circular holes in the center of side plates 12 are clearance-fitted with the valve bodies of the air intake valve 9 and pressure testing valve 11, and the threads are coated with DG-4 high-temperature resistant adhesive to prevent loosening.

[0031] The working principle is as follows: The basic working process is shown in the figure. The entire process consists of 3 steps: 1. The pyrazole in the storage box 1 of the storage component evaporates to form gas.

[0032] 2. The platform is powered on. After the solenoid valve 5 is energized and opened, the gas is delivered to the inside of the resistance ball 10 through the inflation pipeline and the air inlet valve 9.

[0033] 3. When pressure sensor 8 is powered on, it monitors the gas pressure inside the resistance ball 10 in real time. If the pressure reaches the rated value, the solenoid valve 5 is de-energized and closed, and gas replenishment stops.

[0034] The specific implementation steps of this method are as follows: Structural component assembly: The rectangular base plate 13 and the side plate 12 are connected and fixed with M4×18 screws. DG-4 high temperature resistant adhesive is applied to the screw threads to ensure that the side plate 12 is perpendicular to the rectangular base plate 13 and that the axes of the two circular holes in the center of the side plate 12 are aligned with the valve body axes of the intake valve 9 and the pressure measuring valve 11.

[0035] Storage component assembly and material filling: Open the plug above the second straight connector 3 of the M27 welding and fill the solid pyrazole into the hollow cavity of the cube; after filling, tighten the plug to ensure no leakage; then fix the base of the storage box 1 to the rectangular base plate 13 with 4 M4×18 screws, and apply DG-4 high temperature resistant adhesive to the screw threads.

[0036] Connection of the inflation assembly and the airbag assembly: Weld one end of the first straight pipe 4 of the inflation line to the threaded connection of the first straight connector 2 at the bottom of the medicine storage box 1 using M14 welding, and thread the other end to the solenoid valve 5; thread one end of the bent pipe 6 to the solenoid valve 5, and thread the other end to the air inlet valve 9; thread one end of the second straight pipe 7 to the pressure sensor 8, and thread the other end to the pressure testing valve 11; When connecting all pipe threads, the outer nut must ensure that the ball joint and the 37° conduit are fully fitted; At the same time, fix the air inlet valve 9 and the pressure testing valve 11 to the round hole in the center of the side plate 12 through the clamping nut, and apply DG-4 high temperature resistant adhesive to the threads to prevent loosening.

[0037] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make possible variations and modifications to the technical solutions of the present invention using the disclosed methods and techniques without departing from the spirit and scope of the invention. Therefore, any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the content of the technical solutions of the present invention, shall fall within the protection scope of the present invention. Where there is no conflict, the embodiments of this application and the technical features thereof can be combined with each other.

[0038] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A long-term on-orbit gas supply device for a space drag-increasing sphere, characterized in that, include: Storage components, drag-increasing ball (10), and inflation components; The gas filling component is used to transfer the gas generated by the volatilization of the solid gas filling material in the storage component to the drag-increasing ball (10), thereby filling the drag-increasing ball (10) with gas; During the gas replenishment process, the gas filling component monitors the gas pressure inside the drag-increasing ball (10) in real time. Once the pressure reaches the rated value, the gas replenishment of the drag-increasing ball (10) by the storage component is stopped.

2. The long-term on-orbit gas replenishment device for a space drag-increasing sphere according to claim 1, characterized in that, The storage assembly includes: a medicine storage box (1), a first through connector (2), and a second through connector (3); The storage box (1) and the second straight connector (3) are connected by welding; solid pyrazole is filled into the storage box (1) through the second straight connector (3); the storage box (1) is filled with solid pyrazole, and the gas is generated by the volatilization of pyrazole, thereby replenishing the gas of the drag-increasing ball (10); The medicine storage box (1) is connected to the inflation assembly via the first through connector (2).

3. A long-term on-orbit gas replenishment device for a space drag-increasing sphere according to claim 2, characterized in that, The air replenishment device also includes: structural components; The medicine storage box (1) is fixedly installed on the structural component; The medicine storage box (1) is connected to the rectangular base plate (13) by a standard part and threaded connection. DG-4 high temperature resistant adhesive is applied to the threaded connection to prevent loosening.

4. A long-term on-orbit gas replenishment device for a space drag-increasing sphere according to claim 3, characterized in that, The air replenishment device also includes: an air intake valve (9) and a pressure measuring valve (11); The intake valve (9) and the pressure measuring valve (11) are respectively fixedly installed on the drag-increasing ball (10); The air inlet valve (9) is connected to the storage box (1) through the air filling assembly and the first straight connector (2).

5. A long-term on-orbit gas replenishment device for a space drag-increasing sphere according to claim 4, characterized in that, The drag-increasing ball (10) is made by heat sealing a composite polyimide film.

6. A long-term on-orbit gas replenishment device for a space drag-increasing sphere according to claim 5, characterized in that, The inflation assembly includes: a solenoid valve (5), a first straight pipe (4), a bend (6), a second straight pipe (7), and a pressure sensor (8); One end of the bend (6) is threaded with the intake valve (9), and the other end of the bend (6) is threaded with the solenoid valve (5). The solenoid valve (5) is placed on the structural assembly and is located between the first straight pipe (4) and the bend pipe (6); The pressure sensor (8) is connected to the pressure measuring valve (11) through a straight pipe (7) to monitor the gas pressure inside the resistance ball (10) in real time.

7. A long-term on-orbit gas replenishment device for a space drag-increasing sphere according to claim 6, characterized in that, The material grade of the first straight pipe (4), the bend (6), and the second straight pipe (7) is 5A06.

8. A long-term on-orbit gas replenishment device for a space drag-increasing sphere according to claim 6 or 7, characterized in that, The structural components include: a base plate (13) and side plates (12); The side plate (12) is vertically fixed on the base plate (13); A medicine storage box (1) is fixedly installed on the base plate (13), and a solenoid valve (5) is placed on the base plate (13). Two round holes are machined on the side plate (12), which are used to fit the valve body clearance of the intake valve (9) and the pressure measuring valve (11).

9. A long-term on-orbit gas replenishment device for a space drag-increasing sphere according to claim 8, characterized in that, The material grade of both the base plate (13) and the side plate (12) is 5A06.

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