Inflation protection pipeline structure suitable for satellite instrument

Abstract

The invention provides an inflation protection pipeline structure suitable for a satellite instrument, and relates to the field of special pipelines for satellite instruments, the inflation protection pipeline structure comprises a hose assembly, a hoop seat, a hoop cover and an insulation sleeve, the hose assembly is fixed on the hoop seat through the hoop cover, and the insulation sleeve is sleeved among the hose assembly, the hoop cover and the hoop seat; the hose assembly is connected with the satellite body through the hoop seat; the hose assembly comprises a hose, a ball joint nozzle and an air inlet joint nozzle, one end of the hose is connected with the ball joint nozzle, the other end of the hose is connected with the air inlet joint nozzle, and the air inlet joint nozzle is connected with an instrument air inlet connector. According to the air inlet connecting nozzle, the stepped conical section is adopted, the anti-falling effect is achieved, and the air inlet connecting nozzle has high adaptability to the size specification of a ground equipment connector; the cylindrical insulating block design is adopted between the pipeline and the hoop, so that insulation between the pipeline and a satellite body can be effectively guaranteed, and the conduction characteristic of a satellite instrument is not affected; the hose is connected with the satellite body through the hoop, and adaptability of pipeline layout to layout in the satellite is improved.

Description

Technical Field

[0001] The present invention relates to the field of satellite instrument dedicated pipelines, in particular to an inflatable protection pipeline structure suitable for satellite instruments. Background Art

[0002] Currently, with the continuous improvement of the maneuverability of satellite payloads and instruments and the expansion of their functions, the number of moving parts, such as the mechanisms within payloads and instruments, is increasing. To ensure these moving parts can operate stably and long-term in the vacuum environment of space and reduce frictional losses between them, solid lubrication is required. This solid lubrication primarily involves surface coatings, which are extremely sensitive to the air environment and susceptible to oxidation and corrosion. Therefore, during ground-based satellite assembly and testing, these moving parts require inflatable protection to provide a stable local environment and mitigate oxidation and corrosion. This creates an urgent need for inflatable protection lines suitable for satellite instruments to address the need for inflating from ground equipment to satellite instruments.

[0003] Currently, the inflation protection pipelines of satellite instruments have the following problems: 1) The interface ends with ground-based inflation equipment are generally connected to rubber tubes in a conical section, which may fall off during use; 2) The connection between the pipeline and the satellite body is insulated with polyimide film, etc. When the film is damaged during use, the insulation properties of the instrument and equipment will be poor; 3) The joint ends of the inflation protection pipeline are not fixed and leak due to the loose fastening method, affecting other instruments and equipment on the satellite.

[0004] There are some relevant studies on the above situation of the inflation pipeline. Zhao Shiye proposed a variable diameter inflation tube sealing end cap in "A reusable variable diameter inflation tube sealing end cap" (CN106609892A), which solves the problem that the end cap cannot adapt to inflation tubes of different diameters, and can adapt to interfaces of three different gears: small, medium and large. The above invention provides a solution to interfaces of different calibers. However, the above changes cannot solve the problem of size transition between gears. Liu Weidong proposed in "A new type of nitrogen retention pipeline in the tube" (CN203743831U) that the utility model first seals the nitrogen retention device, and then uses the nitrogen filling tube to fill the nitrogen by a pinhole insertion method to achieve the nitrogen retention effect. However, the whole set of equipment is suitable for small-scale nitrogen filling operations and small-scale factory production, and cannot solve the problem of falling off and leakage during the nitrogen filling process of satellite instruments. Liu Zhijia proposed a graphical, fast, and accurate automatic pipe bending pre-determination method in "A Pre-determination Method for Automatic Pipe Bending in Satellite Pipelines" (CN103971017A) to solve the problem of mutual interference in the satellite pipeline design process and improve the efficiency of pipeline design. This is inconsistent with the design goal of the inflation protection pipeline structure in this patent. Yang Jin disclosed the inflation pipeline of the clutch booster in "Inflatable Pipeline of Automobile Clutch Booster" (CN104235233A). Its application places are engineering vehicles, tractors, special vehicles, transport vehicles and other vehicles with high-power engines. It mainly improves the stability of the output gas source, which is inconsistent with the design goals and application fields of this patent. Jia Dongyong optimized the pipeline design process from a system perspective in "A Design Method for Equipment Piping System of Spacecraft" (CN107832508A), improved the design and production efficiency of the pipeline, and did not address the problems of shedding, leakage, and insulation layer damage that may occur during the inflation process. In "A Spacecraft Pipeline System Assembly and Test Device" (CN204358247U), Zhao Jian designed a device for sampling, welding, and testing pipeline space, which belongs to the field of testing and process, and does not match the design field in this article. In "Design Technology of Nuclear Pressure Capacitor Nitrogen Filling Protection Device" (China New Technology and New Products 2014 NO.07 (Part 1)), Liu Qingrong introduced the design of the sealed packaging after the nuclear reactor pressure vessel is refilled with nitrogen. This is the design of the nitrogen filling container, not the design of the nitrogen filling pipeline in this article. In "Design of Nitrogen Transmission Pipeline for Khanh Hoa Coal Mine in Vietnam", Pei Wen designed a nitrogen injection system for the coal mine to prevent spontaneous combustion of coal, but it obviously did not solve the problems encountered during the nitrogen filling protection process. Summary of the Invention

[0005] In view of the defects in the prior art, an object of the present invention is to provide an inflatable protection pipeline structure suitable for satellite instruments.

[0006] According to the present invention, an inflatable protection pipeline structure suitable for satellite instruments comprises a hose assembly, a clamp seat, a clamp cover, and an insulating sleeve. The hose assembly is fixed to the clamp seat via the clamp cover. An insulating sleeve is provided between the hose assembly, the clamp cover, and the clamp seat. The hose assembly is connected to the satellite body via the clamp seat.

[0007] The hose assembly includes a hose, a ball joint and an air inlet joint. One end of the hose is connected to the ball joint, and the other end of the hose is connected to the air inlet joint. The air inlet joint is connected to the air inlet interface of the instrument. The gas working medium enters the hose through the air inlet joint and is discharged from the ball joint.

[0008] Preferably, one end of the hose is clamped on the tapered end of the ball joint through a collar, and the other end of the hose is clamped on the air inlet joint through a collar.

[0009] Preferably, the insulating sleeve is a hollow cylinder;

[0010] The insulating sleeve is composed of two insulating pads, and the insulating pads are in a hollow semi-cylindrical shape.

[0011] Preferably, the inner diameter of the insulating sleeve is larger than the outer diameter of the hose, and the outer diameter of the insulating sleeve is gap-matched with the clamp seat and the clamp cover.

[0012] Preferably, the end of the air inlet nozzle is provided with a stepped interface, and the air inlet nozzle is connected to the external pipeline through the stepped interface.

[0013] Preferably, the ball joint is locked with the threaded interface of the air inlet end of the stand-alone instrument through an interface nut.

[0014] Preferably, the bottom of the clamp seat is provided with an interface with the satellite body, the interface is a stepped hole, and the interface is installed by fasteners connected to the interface of the satellite body.

[0015] Preferably, a threaded interface is provided on the clamp seat, and the clamp seat and the clamp cover are connected by screw fasteners.

[0016] Preferably, the hose and the air inlet nozzle are both fixed to the clamp seat via a clamp cover.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] (1) The air inlet nozzle of the present invention adopts a stepped cone section to prevent it from falling off and has strong adaptability to the size specifications of the ground equipment interface;

[0019] (2) The cylindrical insulating block design between the pipeline and the clamp in the present invention can effectively ensure the insulation between the pipeline and the satellite body, without affecting the conduction characteristics of the satellite instrument;

[0020] (3) In the present invention, the hose is connected to the satellite body by a clamp, which improves the adaptability of the pipeline layout to the layout inside the satellite. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the air inlet and outlet interfaces of the present invention;

[0024] Figure 3 for Figure 2 Enlarged view of part A in the middle;

[0025] Figure 4 for Figure 2 Enlarged view of part B in the middle.

[0026] The figure shows: a clamp seat 1, a clamp cover 2, an insulating sleeve 3, a hose 4, an interface nut 5, a ball joint 6, a collar 7, and an air inlet joint 8. DETAILED DESCRIPTION

[0027] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0028] Example

[0029] According to the present invention, an inflatable protection pipeline structure suitable for satellite instruments is provided, such as Figure 1-2 As shown, it includes: a hose assembly, a clamp base 1, a clamp cover 2, and an insulating sleeve 3. The hose assembly is fixed to the clamp base 1 via the clamp cover 2, and the insulating sleeve 3 is placed between the hose assembly, the clamp cover 2, and the clamp base 1. The clamp base 1 has a threaded interface, and the clamp base 1 and clamp cover 2 are connected by screw fasteners. The bottom of the clamp base 1 has an interface for the satellite body, which is a stepped hole. The interface is installed with fasteners connecting the interface to the satellite body. The insulating sleeve 3 is composed of two hollow semi-cylindrical insulating pads. The two semi-cylindrical insulating pads are combined to form a complete hollow cylinder. The inner diameter of the insulating sleeve 3 allows the outer diameter of the hose 4 to pass through, and the outer diameter of the insulating sleeve 3 is a clearance fit between the clamp base 1 and the clamp cover 2.

[0030] The hose assembly includes a hose 4, an interface nut 5, a ball connector 6, a collar 7, and an air inlet connector 8. Both the hose 4 and the air inlet connector 8 are secured to the clamp base 1 via a clamp cover 2. One end of the hose 4 is clamped to the tapered end of the ball connector 6 via the collar 7. The ball connector 6 is locked to the threaded interface of the air inlet of the stand-alone instrument via the interface nut 5. The other end of the hose 4 is clamped to the air inlet connector 8 via the collar 7. The end of the air inlet connector 8 has a stepped interface, which connects the air inlet connector 8 to the external pipeline. The working gas enters the hose 4 through the air inlet connector 8 and is discharged from the ball connector 6.

[0031] The above describes specific embodiments of the present invention. It should be understood that the present invention is not limited to the specific embodiments described above, and those skilled in the art may make various changes or modifications within the scope of the claims, which do not affect the essence of the present invention. The embodiments of this application and the features in the embodiments may be combined with each other in any manner unless there is a conflict.

Claims

1. An inflatable protection pipeline structure suitable for satellite instruments, characterized in that: include: A hose assembly, a clamp seat (1), a clamp cover (2) and an insulating sleeve (3), wherein the hose assembly is fixed to the clamp seat (1) via the clamp cover (2), the insulating sleeve (3) is sleeved between the hose assembly, the clamp cover (2) and the clamp seat (1), and the hose assembly is connected to the satellite body via the clamp seat (1); The hose assembly comprises a hose (4), a ball joint (6) and an air inlet joint (8), one end of the hose (4) is connected to the ball joint (6), the other end of the hose (4) is connected to the air inlet joint (8), the air inlet joint (8) is connected to the air inlet interface of the instrument, the gas working medium enters the hose (4) through the air inlet joint (8), and the gas working medium is discharged from the ball joint (6).

2. The inflatable protection pipeline structure suitable for satellite instruments according to claim 1, characterized in that: One end of the hose (4) is clamped on the conical end of the ball joint (6) through a collar (7), and the other end of the hose (4) is clamped on the air inlet joint (8) through the collar (7).

3. The inflatable protection pipeline structure suitable for satellite instruments according to claim 1, characterized in that: The insulating sleeve (3) is a hollow cylinder; The insulating sleeve (3) is composed of two insulating pads, and the insulating pads are in a hollow semi-cylindrical shape.

4. The inflatable protection pipeline structure suitable for satellite instruments according to claim 1, characterized in that: The inner diameter of the insulating sleeve (3) is larger than the outer diameter of the hose (4), and the outer diameter of the insulating sleeve (3) is clearance-matched with the clamp seat (1) and the clamp cover (2).

5. The inflatable protection pipeline structure suitable for satellite instruments according to claim 1, characterized in that: The end of the air inlet nozzle (8) is provided with a stepped interface, and the air inlet nozzle (8) is connected to an external pipeline via the stepped interface.

6. The inflatable protection pipeline structure suitable for satellite instruments according to claim 1, characterized in that: The ball joint (6) is locked with the air inlet thread interface of the stand-alone instrument via an interface nut (5).

7. The inflatable protection pipeline structure suitable for satellite instruments according to claim 1, characterized in that: The bottom of the clamp seat (1) is provided with an interface with the satellite body, the interface being a stepped hole, and the interface is installed by a fastener connected to the satellite body interface.

8. The inflatable protection pipeline structure suitable for satellite instruments according to claim 1, characterized in that: A threaded interface is provided on the clamp seat (1), and the clamp seat (1) and the clamp cover (2) are connected via screw fasteners.

9. The inflatable protection pipeline structure suitable for satellite instruments according to claim 1, characterized in that: The hose (4) and the air inlet nozzle (8) are both fixed to the clamp seat (1) via the clamp cover (2).

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