Pico-nano satellite storage tank propellant filling device
By designing a propellant filling device for the Pina satellite storage tank combining Z-type filling pipe and L-type intake pipe, the problem of complex and high cost of propellant filling mechanism in the prior art is solved, and the rapid Safe propellant filling and sealing reduces costs and R&D cycle.
Patent Information
- Application Number
- CN202421393288.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The propellant filling mechanism of existing Pina satellites is complex and costly, making it difficult to meet the needs of fast launch and low-cost.
A propellant filling device for Pina satellite storage tank is designed, using a combination of Z-type filling pipe and L-type intake pipe. The filling and sealing of propellant are achieved through the cooperation of the plug-in moving channel and the sealing ring.
The rapid and safe filling of propellant is achieved, the sealing of the filling process is ensured, the propellant leakage is prevented, and the cost and R&D cycle is reduced.
Smart Images
Figure CN222496661U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aviation vehicle propulsion filling, in particular to a Pina satellite tank propellant filling device. Background Art
[0002] A nanosatellite is a small satellite with a mass of kilograms and based on micro-electromechanical systems (MEMS) technology. Nanosatellites generally refer to small satellites with a mass of less than 10kg, and picosatellites generally refer to small satellites with a mass of less than 1kg. Compared with large satellites, the biggest advantages of nanosatellites are low cost, short manufacturing and launch cycles, and fast emergency response. Nanosatellites have outstanding advantages such as low cost, short development cycle, and flexible launch. They can complete tasks that are difficult for a single large satellite to achieve by forming constellations, formations, or satellite groups, and have certain advantages in research and development and application.
[0003] With the development of Pina satellite and aerospace technology, due to the low cost and rapid launch of Pina satellite, in order to make Pina satellite more competitive in commercial aerospace, based on the original advantages, a more convenient and simple propellant filling mechanism is designed to complete the test faster, which can reduce costs and complete related tasks more quickly. Utility Model Content
[0004] The utility model aims to provide a propellant filling device for a Pina satellite tank to solve the problems raised in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a Pina satellite tank propellant filling device, including a filling mechanism, the output end of the filling mechanism is connected to the Pina satellite tank, a connecting support is installed at the bottom of the Pina satellite tank, the connecting support extends toward one side of the bottom of the filling mechanism to stably support the filling mechanism, the filling mechanism includes a filling pipe with a Z-shaped structure and an air intake pipe with an L-shaped structure, the filling pipe is contact-sealed and connected to the opposite ends of the upper side of the air intake pipe, the end of the air intake pipe away from the filling pipe is connected to the input port of the Pina satellite tank, and a Pina satellite tank propellant filling circuit is formed through the connection of the filling pipe, the air intake pipe, and the input port of the Pina satellite tank, a plug moving channel is horizontally connected to the outside on the side of the upper horizontal section of the filling pipe away from the air intake pipe, a plug is axially movably arranged inside the plug moving channel, and the plug is installed toward the end of the air intake pipe There is an O-ring II, the other end of which extends to the outside of the plug moving channel and a Y-ring is installed at the connection with the plug moving channel. A threaded rod is arranged on the plug located at the plug moving channel, and an internal threaded hole is opened on the inner wall of the plug moving channel corresponding to the threaded rod. The threaded rod is placed in the internal threaded hole for threaded connection, that is, the rotation of the plug is controlled by rotating the outer end of the plug, thereby driving the plug to move axially in the plug moving channel, and then controlling the O-ring II to contact and seal or separate and connect with the end of the intake pipe, that is, when filling with propellant, rotate the plug to separate the O-ring II from the intake pipe. At this time, the filling pipe is connected with the intake pipe, and under the action of air pressure, the propellant is transported toward the Pina satellite tank. After the filling is completed, rotate the plug to contact and seal the O-ring II with the intake pipe. At this time, the intake pipe circuit is blocked to prevent the propellant from flowing back, and the filling seal is completed.
[0006] Compared with the prior art, the beneficial effects of the utility model are: the plug in the propulsion and filling mechanism moves back and forth horizontally, and the various sealing components, conical surfaces and spherical seals in the device cooperate to achieve the filling of the propellant, ensuring excellent sealing during the filling process and preventing the propellant from leaking. At the same time, after the filling is completed, the Pina satellite tank can be directly sealed through the plug to prevent the propellant added to the tank from leaking. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Figure 1 This is a schematic diagram of the connection distribution structure between a Pina satellite tank propellant filling device and the tank.
[0008] Figure 2 This is a schematic diagram of the structure of a plug in a Pina satellite tank propellant filling device.
[0009] Figure 3 This is a two-dimensional schematic diagram of a Pina satellite tank propellant filling device.
[0010] Figure 4This is a schematic diagram of the filling principle of a Pina satellite tank propellant filling device.
[0011] Figure 5 A schematic diagram of the sealing principle of a Pina satellite tank propellant filling device after filling;
[0012] Among them: filling pipe 1, plug 2, locking cover 3, Y-type sealing ring 4, split nut 5, O-type sealing ring I 6, O-type sealing ring II 7, air intake pipe 8, hexagonal head 9, threaded rod 10, hemispherical configuration 11, Pina satellite tank 20, filling mechanism 30, connecting support 40. DETAILED DESCRIPTION
[0013] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0014] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0015] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0016] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0017] See also Figure 1-Figure 5A propellant filling device for a Pina satellite tank comprises a filling mechanism 30, wherein an output end of the filling mechanism is connected to a Pina satellite tank 10, a connecting support 40 is installed at the bottom of the Pina satellite tank 10, and the connecting support 40 extends toward one side of the bottom of the filling mechanism 30 to stably support the filling mechanism 30, and the filling mechanism 30 comprises a filling pipeline 1 with a Z-shaped structure and an air intake pipeline 8 with an L-shaped structure, the filling pipeline 1 is contact-sealedly connected to the upper opposite ends of the air intake pipeline 8, and the end of the air intake pipeline 8 away from the filling pipeline 1 is connected to the input port of the Pina satellite tank, and a Pina satellite tank propellant filling circuit is formed by connecting the filling pipeline 1, the air intake pipeline 8, and the input port of the Pina satellite tank, and a plug moving channel is horizontally connected to the outside on the side of the upper horizontal section of the filling pipeline 1 away from the air intake pipeline 8, and a plug moving channel is axially movable inside the plug moving channel, and an O-ring II7 is installed at the end of the plug 2 facing the air intake pipeline 8. The other end extends to the outside of the plug moving channel and a Y-shaped sealing ring 4 is installed at the connection with the plug moving channel. A threaded rod 10 is arranged on the plug 2 located at the plug moving channel. An internal threaded hole is opened on the inner wall of the plug moving channel corresponding to the threaded rod 10. The threaded rod 10 is placed in the internal threaded hole for threaded connection, that is, the rotation is controlled by rotating the outer end of the plug 2, thereby driving the plug 2 to move axially in the plug moving channel, and then controlling the O-ring Ⅱ7 to contact and seal or separate and connect with the end of the intake pipe 8, that is, when the propellant is filled, the plug 2 is rotated to separate the O-ring Ⅱ7 from the intake pipe 8. At this time, the filling pipe 1 is connected with the intake pipe 8, and the propellant is transported toward the Pina satellite tank 20 under the action of air pressure. After the filling is completed, the plug 2 is rotated to contact and seal the O-ring Ⅱ7 with the intake pipe 8. At this time, the intake pipe 8 circuit is blocked to prevent the propellant from flowing back, that is, the filling seal is completed.
[0018] In the embodiment of the utility model, a group of split nuts 5 are installed on the outside of the connection between the filling pipe 1, the air intake pipe 8 and the plug 2, and the air intake pipe 8 and the filling pipe 1 are fixedly connected by the split nuts 5. At the same time, an O-type sealing ring Ⅰ6 is arranged on the inside of the connection to ensure the sealing after the installation and connection, that is, under the cooperation of the split nuts 5 and the O-type sealing ring Ⅰ6, the above structure is installed as a whole to form a filling mechanism;
[0019] Specifically, in order to maintain the sealing performance when the Y-shaped sealing ring 4 is movably connected to the plug moving channel, a locking cover 3 is installed on the Y-shaped sealing ring 4 to perform locking and sealing.
[0020] As a preferred embodiment of the utility model, a hexagonal head 9 is installed at the outer end of the plug 2 facing the threaded rod 10, and the hexagonal head 9 extends to the outside of the plug movement channel. When the threaded rod is controlled to rotate, the hexagonal head 9 is rotated by using a wrench, thereby controlling the threaded rod 10 to rotate in the internal threaded hole, and controlling the axial movement of the plug 2;
[0021] A set of hemispherical configurations 11 are installed at both ends of the plug 2 located inside the filling pipe 1. The surface finish of the hemispherical configuration 11 is required to be 0.8 microns. The connection between the filling pipe 1, the plug moving channel and the air intake pipe 8 is set to a conical configuration. The conical configuration cooperates with the hemispherical configurations 11 at both ends of the plug 2 to form a spherical seal, thereby keeping the plug 2 in rotation and moving, and being able to fully seal the connection between the filling pipe 1, the plug moving channel and the air intake pipe 8 respectively;
[0022] Specifically, due to the corrosiveness and low temperature characteristics of the propellant, the Y-type sealing ring 4, the O-type sealing ring I6, and the O-type sealing ring II7 are all made of EPDM rubber.
[0023] The working principle of the utility model is: in the idle part of the device, all the driving parts mentioned above, which refer to the power elements, electrical components and the adapted power supply, are connected through wires, and the electrical components are electrically connected in a sequential working order. The detailed connection means are well-known technologies in the field. The following mainly introduces the working principle and process, and no explanation is given on the electrical control. During filling, the plug 2 rotates and moves outward, and one end of the plug 2 and the plug moving channel form a spherical seal. During filling, the propellant enters the storage tank from the filling port with the air pressure, forming a filling circuit, and completing the filling of the tank propellant.
[0024] When the filling is completed, the plug 2 is rotated to move inward, and one end of the plug 2 and the air inlet pipe 8 form a spherical seal, and the filling circuit is sealed. At this time, the propellant added to the storage tank cannot escape from the storage tank, and the filling and sealing are completed.
[0025] It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present utility model.
[0026] The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.
Claims
1. A propellant filling device for a Pina satellite tank, characterized in that: The invention comprises a filling mechanism (30), wherein the output end of the filling mechanism is connected to a Pina satellite storage tank (20), a connecting support member (40) is installed at the bottom of the Pina satellite storage tank (20), and the connecting support member (40) extends toward one side of the bottom of the filling mechanism (30), and the filling mechanism (30) comprises a filling pipeline (1) with a Z-shaped structure and an air intake pipeline (8) with an L-shaped structure, and the filling pipeline (1) and the air intake pipeline (8) are connected to each other in a contact sealing manner at the upper opposite ends thereof, and the end of the air intake pipeline (8) away from the filling pipeline (1) is connected to the input port of the Pina satellite storage tank, and the water on the upper side of the filling pipeline (1) is connected to the filling pipeline (1). A plug moving channel is horizontally connected to the outside on one side of the flat section away from the air inlet pipe (8), a plug (2) is axially movable inside the plug moving channel, an O-type sealing ring II (7) is installed at the end of the plug (2) facing the air inlet pipe (8), and a Y-type sealing ring (4) is installed at the other end extending to the outside of the plug moving channel and at the connection with the plug moving channel, a threaded rod (10) is arranged on the plug (2) located at the plug moving channel, an internal threaded hole is opened on the inner wall of the plug moving channel corresponding to the threaded rod (10), and the threaded rod (10) is placed in the internal threaded hole for threaded connection.
2. A Pina satellite tank propellant filling device according to claim 1, characterized in that: A group of split nuts (5) are installed on the outside of the connection between the filling pipe (1), the air intake pipe (8) and the plug (2), and an O-type sealing ring I (6) is arranged on the inside of the connection between the split nuts (5), the air intake pipe (8) and the filling pipe (1).
3. A Pina satellite tank propellant filling device according to claim 2, characterized in that: A locking cover (3) is installed on the Y-shaped sealing ring (4).
4. A Pina satellite tank propellant filling device according to claim 3, characterized in that: The plug (2) is provided with a hexagonal head (9) at the outer end portion facing the threaded rod, and the hexagonal head (9) extends to the outside of the plug movement channel.
5. A Pina satellite tank propellant filling device according to claim 4, characterized in that: A group of hemispherical configurations (11) are installed at both ends of the plug (2) located inside the filling pipe (1). The surface finish of the hemispherical configuration (11) is required to be 0.8 microns. The connection between the filling pipe (1), the plug moving channel and the air intake pipe (8) is set as a conical configuration. The conical configuration cooperates with the hemispherical configurations (11) at both ends of the plug (2) to form a spherical seal.