Extra-large parallel flow deflector for surface tension tank

Abstract

The present invention provides an extra-large parallel guide plate for a surface tension tank in the technical field of liquid propellant management under microgravity conditions, comprising an extra-large guide plate, an anti-sway plate and a bracket. The extra-large guide plate is arranged parallel to the inner wall of the tank, with both sides bent inward, and the overall structure is a "groove". A circular hole is provided on the top of the extra-large guide plate for connecting other components in the tank. The extra-large guide plate is connected and fixed to the inner wall of the tank at the middle and bottom through the anti-sway plate and the bracket. When the surface tension tank is working, the liquid can be quickly diverted from the top of the tank along the extra-large guide plate to the liquid reservoir at the bottom of the tank within a limited time, further completing the discharge of the liquid without air entrainment. The extra-large parallel guide plate for the surface tension tank provided by the present invention and the assembly method thereof can be applied to large surface tension tanks in aerospace fields such as satellites, and has the advantages of strong liquid diversion ability, strong liquid anti-sway ability and strong deformation adaptability.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid propellant management under microgravity conditions, and in particular to an ultra-large parallel guide plate for a surface tension tank. Background Art

[0002] Surface tension tanks are typically all-metal structures with advantages such as high reliability, good compatibility, and long service life, and therefore have been widely used in the aerospace field. The Propellant Management Device (PMD) is the core component of the surface tension tank, which uses the PMD to achieve stable propellant discharge without air entrainment. With the continuous development of surface tension tank technology, plate-type propellant management devices have gradually been applied and have become a new generation of reliable and advanced management devices. The guide vane is an important component of the plate-type PMD, and its design aims to produce a plate-type PMD with light weight, high reliability, and simple structure.

[0003] Deflectors are components located on the inner wall of a tank, primarily used for transferring liquid propellants in microgravity environments. They are generally classified into two categories: vertical deflectors (where the deflector's main cross-section is perpendicular to the tank's inner wall) and parallel deflectors (where the deflector's main cross-section is parallel to the tank's inner wall). Vertical deflectors are easy to manufacture and assemble, making them the most widely used type both domestically and internationally. However, they have some unavoidable drawbacks, such as slow diversion speed, low structural strength, and difficulty connecting to the reservoir.

[0004] At present, there is an increasing demand for large surface tension tanks in aerospace fields such as satellites. Surface tension tanks are gradually developing in a trend of large volume and light weight, so the application market for plate-type PMDs has become broader.

[0005] In a microgravity environment, as the volume of the tank increases, the distance between the liquid at the top of the tank and the reservoir at the bottom also increases. The guide plate must not only quickly divert the liquid to the reservoir within a limited time, but also ensure its structural strength and ability to adapt to deformation as the size of the guide plate becomes longer. This places higher demands on traditional guide plate technology.

[0006] Currently, there are no examples of ultra-large deflectors (1-2 meters in length) manufactured through integrated molding being put into engineering applications. This is primarily due to limitations in traditional parts processing methods. Conventional deflector technology also faces difficulties in securing these ultra-large deflectors and ensuring a clear gap between the deflector and the shell wall. Furthermore, as the amount of liquid in the tank increases, liquid sloshing becomes more pronounced. Therefore, ensuring anti-sloshing capabilities without compromising liquid flow has become a pressing challenge in this field. Summary of the Invention

[0007] In view of the defects in the prior art, the purpose of the present invention is to provide an extra-large parallel guide plate for a surface tension storage tank.

[0008] According to the present invention, an ultra-large parallel deflector for a surface tension tank includes an ultra-large deflector, an anti-sway plate, and a bracket. The anti-sway plate is connected to the inner wall of the tank, and the bracket is connected to the anti-sway plate.

[0009] The super-large guide plate is arranged through the bracket, and the middle part and the bottom part of the super-large guide plate are fixed at multiple points by the bracket.

[0010] In some embodiments, the super-large guide plate is arranged parallel to the inner wall of the tank, and two sides of the super-large guide plate are bent inward;

[0011] The super-large guide plate as a whole adopts a groove structure, and the super-large guide plate is bent on one side to set a certain width and angle.

[0012] In some embodiments, a circular hole 1 is provided on the top of the super-large guide plate, and the circular hole 1 is used to connect other components in the tank.

[0013] In some embodiments, a certain gap is provided between the super-large guide plate and the inner wall surface of the tank.

[0014] In some embodiments, the super-large guide plate is slowly slidably disposed after passing through the bracket, and the bracket is fixed to the outside of the super-large guide plate.

[0015] In some embodiments, the anti-sway plate adopts a circular ring structure, and the circular ring area on the anti-sway plate is set to a certain width.

[0016] In some embodiments, a certain gap is provided between the anti-sway plate and the inner wall surface of the tank, and a plurality of circular holes 2 are evenly provided on the annular region of the anti-sway plate.

[0017] In some embodiments, a plurality of handholding structures are evenly arranged on the anti-sway plate, and the plurality of handholding structures are arranged with a certain width.

[0018] In some embodiments, the bracket as a whole adopts a groove structure, and the structural shape of the bracket is matched with the structural shape of the super-large guide plate.

[0019] In some embodiments, a step is provided in the middle of the bracket.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The present invention reasonably controls the structural dimensions of the super-large guide plate and the gap between the super-large guide plate and the inner wall of the tank, so that it has long-range liquid diversion capability, can quickly divert remote liquid to the liquid reservoir within a limited time, and enhance the diversion capability;

[0022] By using an extra-large guide plate to connect the gas and liquid accumulators at the tank end, the liquid can be diverted quickly over a long distance, ensuring that the accumulator is filled with propellant within a limited time, further achieving stable discharge of propellant without air entrainment;

[0023] 2. The present invention reasonably arranges an anti-sloshing plate structure inside the tank, which can achieve a certain degree of liquid sloshing suppression without affecting the liquid diversion, and has a strong liquid anti-sloshing ability;

[0024] 3. The present invention rationally designs the matching dimensions of the super-large guide plate and the bracket, so that the super-large guide plate can slide slowly after passing through the bracket, so that the super-large guide plate has a better ability to adapt to deformation, and can effectively avoid the occurrence of problems such as the guide plate being pulled apart or broken due to tensile deformation;

[0025] At the same time, the super-large guide plate, bracket and anti-sway plate are connected to form a frame structure, which also has strong mechanical resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 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:

[0027] Figure 1 This is a schematic diagram of the assembly of an ultra-large parallel guide plate for a surface tension storage tank according to the present invention;

[0028] Figure 2 It is a structural schematic diagram of the super-large guide plate on the super-large parallel guide plate for the surface tension storage tank of the present invention;

[0029] Figure 3 A side view of an ultra-large guide plate on an ultra-large parallel guide plate for a surface tension storage tank according to the present invention;

[0030] Figure 4 for Figure 3 AA view;

[0031] Figure 5 for Figure 3 B-direction view;

[0032] Figure 6 This is a schematic structural diagram of the anti-sway plate on the super-large parallel guide plate for the surface tension storage tank of the present invention;

[0033] Figure 7This is a schematic structural diagram of the bracket on the super-large parallel guide plate for the surface tension storage tank of the present invention;

[0034] Figure 8 This is a schematic diagram of the liquid level of a tank at the end of the propellant phase using the super-large parallel guide plate for the surface tension tank of the present invention.

[0035] Reference numerals:

[0036] Super large deflector 1 handrail structure 22

[0037] Round hole 11 bracket 3

[0038] Anti-sway board 2 steps 31

[0039] Ring area 21 Storage tank 4

[0040] Round hole 211 DETAILED DESCRIPTION

[0041] 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.

[0042] like Figure 1-7 As shown, an ultra-large parallel deflector for a surface tension tank according to the present invention comprises an ultra-large deflector 1, an anti-sway plate 2, and a bracket 3. The anti-sway plate 2 is welded to the inner wall of the tank 4, and the bracket 3 is welded to the anti-sway plate 2. The ultra-large deflector 1 passes through the bracket 3, which secures the middle and bottom of the ultra-large deflector 1 at multiple points.

[0043] Specifically, in this embodiment, the super-large deflector 1 is arranged parallel to the inner wall of the tank 4. Its two sides are bent inward, forming a groove structure. The single-side bend width of the super-large deflector 1 is 6.0 to 10.0 mm, and the single-side bend angle is 30° to 45°. This inward bend creates a wedge-shaped structure between the super-large deflector 1 and the inner wall of the tank 4. Under the microgravity conditions of space, liquid converges at the wedge-shaped structure due to surface tension, filling the gap between the super-large deflector 1 and the inner wall of the tank 4 with liquid, further achieving improved liquid diversion capabilities. Furthermore, if the super-large deflector 1 were simply a flat structure, its structure would be too thin. By bending its two sides into a groove-shaped structure, the structural strength of the super-large deflector 1 can be enhanced.

[0044] Specifically, in this embodiment, two circular holes are provided on the top of the super-large guide plate 1 for welding and connecting other components in the tank 4 to enhance the mechanical resistance of the super-large guide plate 1 .

[0045] Specifically, in this embodiment, the gap between the super-large guide plate 1 and the inner wall of the tank 4 is 0.5 mm to 8.0 mm. In a microgravity environment, the liquid is distributed closely to the wall, and the size of the gap between the guide plate and the wall affects the liquid transmission capacity. If the gap is small, the flow resistance will increase, hindering the transmission of the liquid. If the gap is too large, it will destroy the surface tension effect, reduce the liquid storage capacity of the guide plate, and also affect the transmission of the liquid. Therefore, it is necessary to reasonably control the gap between the super-large guide plate 1 and the wall to ensure that the liquid can not only fill the gap between the two, but also flow along the super-large guide plate to the downstream of the tank 4, so as to achieve a stable discharge function of the propellant without air entrainment.

[0046] Specifically, in this embodiment, the super-large deflector 1 can slowly slide in the bracket 3, while the bracket 3 can be fixed to the outside of the super-large deflector 1. The bracket 3 is fixed at multiple points in the middle and bottom of the super-large deflector 1, which not only ensures the mechanical resistance of the super-large deflector 1 but also improves its ability to adapt to deformation.

[0047] Specifically, in this embodiment, the ultra-large deflector 1 has a total length of 1000mm to 2000mm, extending from the top of the tank 4 to the bottom reservoir, ensuring long-range liquid transport. Furthermore, in a microgravity environment, even if the terminal propellant liquid is located at the top of the tank, the ultra-large deflector 1 can quickly guide it to the bottom reservoir, greatly enhancing the liquid diversion capability.

[0048] Specifically, in this embodiment, the oversized guide plate 1 has a total width of 40 mm to 60 mm. The width of the oversized guide plate 1 also affects the liquid propellant transport capability. A smaller width impairs the liquid transport capability. A larger width increases the weight of the plate-type PMD. Therefore, by properly controlling the width of the oversized guide plate 1, liquid transport capability can be maintained while reducing the weight of the structure.

[0049] Specifically, in this embodiment, the thickness of the super-large guide plate 1 is 1 mm.

[0050] Specifically, in this embodiment, the anti-sway plate 2 has a thickness of 1 mm.

[0051] Specifically, in this embodiment, the anti-sway plate 2 is annular, and the width of the annular region 21 is 65 mm to 80 mm.

[0052] Specifically, in this embodiment, the anti-sway plate 2 has 200 to 300 circular holes with a diameter of 10 to 15 mm evenly arranged in a circular area 21 6 to 12 mm from the wall. This circular hole structure reduces the amount of residual liquid and ensures the discharge efficiency of the propellant.

[0053] Specifically, in this embodiment, the anti-sway plate 2 has four evenly distributed handrail structures 22 with a width of 20 mm to 30 mm.

[0054] Specifically, in this embodiment, the bracket 3 is in a groove shape as a whole, matching the structural shape of the super-large guide plate 1 .

[0055] Specifically, in this embodiment, the width of the bracket 3 is 18 to 25 mm.

[0056] Specifically, in this embodiment, a 1 mm step 31 is arranged in the middle of the bracket 3 .

[0057] Specifically, in this embodiment, the matching tolerance between the super-large guide plate 1 and the bracket 3 is 0 +0.5 By rationally setting up the matching mode, the super-large deflector 1, the anti-sway plate 2 and the bracket 3 are connected into a frame structure, so that the whole has strong mechanical resistance.

[0058] The assembly method of the super-large parallel guide plate for the surface tension storage tank of the present invention is as follows:

[0059] like Figure 1 As shown, the super-large parallel guide plate for the surface tension tank of the present invention is composed of a super-large guide plate 1, an anti-sway plate 2 and a bracket 3. First, the anti-sway plate 2 is welded to the inner wall of the tank 4. Then, the anti-sway plate 2 and the bracket 3 are connected. The bracket 3 falls on the hand-holding structure 22 of the anti-sway plate 2, and the connection form is a welding connection. Next, the super-large guide plate 1 is slowly passed through the bracket 3 in sequence. The super-large guide plate 1 is arranged parallel to the inner wall of the tank 4. The super-large guide plate 1 and the bracket 3 are both groove structures. The two are matched and arranged. The middle and bottom of the super-large guide plate 1 are fixed at multiple points by the bracket 3. The super-large guide plate 1 can move slowly in the bracket 3, and the bracket 3 can be fixed on the outside of the super-large guide plate 1. The super-large guide plate 1, the anti-sway plate 2 and the bracket 3 constitute a frame structure as a whole to ensure its anti-deformation ability and mechanical resistance.

[0060] like Figure 2-5 As shown, the oversized deflector 1 is first integrally formed using thermoforming technology, followed by machining. The two sides of the oversized deflector are bent inward to form a groove structure, which increases structural rigidity and improves liquid diversion capabilities. Two small holes are opened on the top of the oversized deflector 1 for welding to other components within the tank, making assembly simple and reliable.

[0061] like Figure 8 As shown, in a microgravity environment, when the amount of propellant remaining at the end is small, it is generally distributed in the upper part of the tank. The ultra-large guide plate 1 connects the upper gas end of the tank 4 and the lower liquid reservoir, ensuring that the propellant can still be diverted to the liquid reservoir at this time, achieving stable discharge without air entrainment, with strong liquid diversion capabilities and high discharge efficiency.

[0062] In the description of this application, it should be understood that the terms up, down, front, back, left, right, vertical, horizontal, top, bottom, inside, outside, etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on this application.

[0063] 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 ultra-large parallel guide plate for a surface tension tank, characterized in that: It comprises an extra-large deflector plate (1), an anti-sway plate (2), and a bracket (3), wherein the anti-sway plate (2) is connected to the inner wall surface of the tank (4), and the bracket (3) is connected to the anti-sway plate (2); The super-large guide plate (1) is arranged through the bracket (3), and the middle part of the super-large guide plate (1) and the bottom part of the super-large guide plate (1) are fixed at multiple points by the bracket (3); The super-large guide plate (1) is arranged parallel to the inner wall surface of the storage tank (4), and the upper two sides of the super-large guide plate (1) are bent inwards; The super-large guide plate (1) as a whole adopts a groove structure, and the super-large guide plate (1) is bent on one side to set a certain width and angle; A certain gap is provided between the super-large guide plate (1) and the inner wall of the storage tank (4); ensuring that the liquid can not only fill the gap between the super-large guide plate (1) and the storage tank (4), but also flow along the super-large guide plate to the downstream of the storage tank (4); The bracket (3) as a whole adopts a groove structure, and the structural shape of the bracket (3) is matched with the structural shape of the super-large guide plate (1).

2. The super-large parallel guide plate for a surface tension tank according to claim 1, characterized in that: A circular hole (11) is provided on the top of the super-large guide plate (1), and the circular hole (11) is used to connect other components in the storage tank (4).

3. The super-large parallel guide plate for a surface tension tank according to claim 1, characterized in that: The super-large guide plate (1) is slowly slidably arranged after passing through the bracket (3), and the bracket (3) is fixed on the outside of the super-large guide plate (1).

4. The super-large parallel guide plate for a surface tension tank according to claim 1, characterized in that: The anti-sway plate (2) adopts a circular ring structure, and the circular ring area (21) on the anti-sway plate (2) is set to a certain width.

5. The super-large parallel guide plate for a surface tension tank according to claim 4, characterized in that: A certain gap is provided between the anti-sway plate (2) and the inner wall surface of the storage tank (4), and a plurality of circular holes (211) are evenly provided on the annular region (21) of the anti-sway plate (2).

6. The super-large parallel guide plate for a surface tension tank according to claim 1, characterized in that: A plurality of hand-holding structures (22) are evenly arranged on the anti-sway plate (2), and the plurality of hand-holding structures (22) are arranged with a certain width.

7. The super-large parallel guide plate for a surface tension tank according to claim 1, characterized in that: A step (31) is provided in the middle of the bracket (3).

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