A plate-type management device for high acceleration environments

Abstract

This invention relates to a plate-type management device for high acceleration environments, comprising an upper laser-drilled plate, a guide plate cover, a guide channel, a venting adapter pipe, a middle laser-drilled plate, a venting pipe, a lower laser-drilled plate, a bubble trap shell, a trap laser-drilled plate, and a trap base. The plate-type management device of this invention utilizes capillary force created by laser-processed micro-holes to form bubble burst points, preventing gas from entering the management device. As long as the laser-drilled portion of the guide channel is within the propellant, the management device can smoothly transfer propellant to downstream engines, achieving propellant transfer and management functions at high acceleration levels.

Description

Technical Field

[0001] This invention relates to a plate-type management device for high acceleration environments, belonging to the field of aerospace propulsion technology. Background Technology

[0002] Propellant plate surface tension management technology has become an important direction for the development of on-orbit satellite propulsion systems. With the improvement of satellite maneuverability, the acceleration level has gradually increased from 0.0001g to 0.005g, and lateral and reverse acceleration environments have emerged. Existing plate management devices rely on capillary forces in the material gap channels to achieve directional propellant transport and management, which is unsuitable for high acceleration environments, especially those with acceleration levels exceeding 0.001g. Under high acceleration conditions, the propellant management capability of existing plate management devices decreases or even disappears, failing to effectively control the propellant. In reverse and lateral acceleration environments, the tank outlet cannot constrain the propellant, resulting in the inability to deliver propellant to the thrusters. To address the need for improved satellite maneuverability and to simultaneously achieve on-orbit propellant loading, this has become one of the key development directions for next-generation propulsion technologies. Summary of the Invention

[0003] The technical problem solved by the present invention is to overcome the shortcomings of the prior art and provide a plate-type management device for high acceleration environments. Based on the capillary force formed by laser processing of micro-holes, the capillary force forms bubble burst points, preventing gas from entering the interior of the management device. At the same time, the propellant is transferred to the downstream engine through laser drilling of the flow channel, realizing the propellant transfer and management functions at high acceleration levels.

[0004] The technical solution of the present invention is: a plate-type management device for high acceleration environments, including an upper laser-drilled plate, a guide plate cover, a guide plate seat, a venting adapter pipe, a middle laser-drilled plate, a venting pipe, a lower laser-drilled plate, a bubble trap shell, a trap laser-drilled plate, and a trap base;

[0005] The guide plate seat is a plate-shaped groove structure with a certain width. The upper, middle and lower laser-drilled plates are connected to each other by guide plate cover plates and then fixed to the guide plate seat to form a guide channel. At least four even-numbered guide channels are fixed together through openings on the trap base, so that any guide channel can be connected to the inside of the bubble trap shell. The bubble trap shell is welded and fixed to the trap base. The trap laser-drilled plate is installed at the outlet of the bubble trap shell. The guide channel conforms to the inner wall of the propellant tank. One end of the vent pipe is fixed to the upper part of the bubble trap shell, and the other end is fixed to the guide plate seat of one of the guide channels through a vent adapter pipe and is connected to the guide channel.

[0006] Preferably, the number of upper laser holes in the upper laser drilling plate, middle laser drilling plate and lower laser drilling plate is not less than 100,000, the diameter of the laser holes is 0.001 to 0.003 mm, and the laser hole spacing is 0.1 to 0.2 mm.

[0007] Preferably, the upper laser perforation plate, the middle laser perforation plate, and the lower laser perforation plate have a structural length of 50-70 mm and a width of 24-28 mm.

[0008] Preferably, the width of the guide plate seat is 30-40mm and the height is 3.5-5mm. Its structure is made of plate material with a thickness of 1mm, which meets the requirements of the hydraulic radius for conveying propellant.

[0009] Preferably, the second, third, fourth, and first flow channels are evenly distributed, enabling the management device to transfer propellant under different acceleration environments and magnitudes.

[0010] Preferably, the flow channel is connected to the venting pipe to meet the need for venting inside the bubble trap shell during the propellant refueling process.

[0011] Preferably, the inner diameter of the bubble trap shell is 80-120 mm and the height is 60-80 mm, so that the amount of propellant inside is small enough to reduce the amount of propellant remaining at the beginning of on-orbit loading.

[0012] Preferably, the diameter of the laser-drilled holes on the trap laser-drilled plate is 0.002 to 0.003 mm, and the number of holes is not less than 100,000, while meeting the requirements of filtration accuracy and flow resistance.

[0013] Preferably, the management device can be used for repeated on-orbit propellant replenishment, with the remaining propellant amount not less than 2% at the initial refueling.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1) This invention uses laser-processed micro-holes to meet the propellant transfer and control requirements of spacecraft operating in high lateral and reverse acceleration environments, ensuring that the thruster is supplied with propellant without air entrapment.

[0016] 2) The plate-type management device of the present invention has the propellant management capability for lateral and reverse acceleration of less than 1g, and can be applied to all complex acceleration environments in orbit, realizing propellant management in the high acceleration working environment of spacecraft, and can be extended to fields such as rocket upper stages.

[0017] 3) The bubble bursting point generated by the capillary force formed by the laser processing of micropores in the management device of the present invention is greater than 5000Pa, which meets the usage requirements of high acceleration and 1300mm diameter series tanks and can meet the design requirements of existing spacecraft left and right propellant tanks.

[0018] 4) Compared with the prior art, the plate-type management device of the present invention has a simple structure, does not require any metal mesh structure, and uses the same material for welding. It is easy to process, has a high qualification rate, is lightweight, and has high reliability, which has certain advantages in satellite propulsion system applications.

[0019] 5) This invention uses plate-type laser processing for micro-holes, with matching hole diameter and number, resulting in low flow resistance, which can meet the high-flow-rate refilling requirements of propellants in both ground and on-orbit environments. Attached Figure Description

[0020] Figure 1 This is a cross-sectional view of an embodiment of a plate-type management device for high acceleration environments according to the present invention;

[0021] Figure 2 This is a structural diagram of the laser-drilled plate according to an embodiment of the present invention;

[0022] Figure 3 Here is a structural diagram of the guide plate seat according to an embodiment of the present invention, where a is a schematic diagram of the overall structure and b is a cross-sectional view;

[0023] Figure 4 This is a three-dimensional structural diagram of the plate-type management device according to an embodiment of the present invention. Detailed Implementation

[0024] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details.

[0025] A plate-type management device for high-acceleration environments utilizes a plate structure with laser-processed micro-holes to achieve propellant transport and control under high-acceleration conditions. Figure 1 As shown, it includes an upper laser perforated plate 1, a guide plate cover plate 2, a guide plate seat 3, a venting adapter pipe 4, a middle laser perforated plate 5, a venting pipe 6, a lower laser perforated plate 7, a bubble trap shell 8, a trap laser perforated plate 9, a trap base 10, a second guide channel 11, a third guide channel 12, a fourth guide channel 13, and a first guide channel 14;

[0026] The upper laser-drilled plate 1, the middle laser-drilled plate 5, and the lower laser-drilled plate 7 are made of laser-drilled micro-holes and are made of the same material as the guide plate cover plate 2 and welded together.

[0027] The venting pipe 6 is welded and fixed to the guide plate seat 3 via the venting adapter pipe 4;

[0028] The guide plate cover 2 is welded and fixed to the guide plate seat 3;

[0029] The other end of the vent pipe 6 is welded and fixed to the upper part of the bubble trap shell 8;

[0030] The second external flow channel 11, the third flow channel 12, the fourth flow channel 13, and the first flow channel 14 are welded together through the opening on the trap base 10, so that any flow channel can be connected to the inside of the bubble trap shell 8.

[0031] The bubble trap shell 8 is welded and fixed to the trap base 10.

[0032] like Figure 2 As shown, the number of upper laser holes in the upper laser drilling plate 1, the middle laser drilling plate 5 and the lower laser drilling plate 7 is not less than 100,000, the diameter of the laser holes is 0.001 to 0.003 mm, and the spacing between the laser holes is 0.1 to 0.2 mm.

[0033] like Figure 3 As shown, the upper laser-drilled plate 1, the middle laser-drilled plate 5, and the lower laser-drilled plate 7 have a structural length L1 of 50-70 mm and a width H1 of 24-28 mm. The laser drilling distance from the edge is 3 mm to avoid changes in the hole diameter caused by welding.

[0034] The width L of the guide plate seat 3 is 30-40mm and the height H is 3.5-5mm. Its structure is made of plate material with a thickness of 1mm, which meets the requirements of the hydraulic radius for conveying propellant.

[0035] The flow guiding channels 11, 12, 13, and 14 are evenly distributed, enabling the management device to transfer propellant under different acceleration environments and magnitudes.

[0036] The flow channel 14 is connected to the vent pipe 6 to meet the requirement of venting the inside of the bubble trap shell 8 during the propellant refueling process.

[0037] The bubble trap shell 8 has an inner diameter of 80-120 mm and a height of 60-80 mm, which makes the amount of propellant inside small enough to reduce the amount of propellant remaining at the beginning of on-orbit loading.

[0038] The laser-drilled holes on the trap laser-drilled plate 9 have a diameter of 0.002 to 0.003 mm and a number of holes of not less than 100,000, while meeting the requirements of filtration accuracy and flow resistance.

[0039] The management device can be used for repeated on-orbit propellant replenishment, with the remaining propellant amount not less than 2% at the initial refueling.

[0040] The working principle of this invention is as follows:

[0041] Utilizing the principle of capillary fluid drive, laser-processed micropores are used to create bubble burst points. This allows the liquid film formed when the propellant and helium come into contact with the upper laser-drilled plate 1 to prevent gas from entering the management device. Simultaneously, the sufficiently small gap between the guide plate cover 2 and the guide plate seat creates a gap channel. Under surface tension, the propellant can cover the entire gap channel, making it difficult for gas to enter and achieving the propellant transport function. Furthermore, guide channels 2 (11), 3 (12), 4 (13), and 14 (14) are parallel guide plate structures, capable of transporting propellant under microgravity conditions. They can guide propellant from any position to the bottom bubble trap, achieving complete propellant management and effective gas-liquid separation. During high-accelerometer operation, as long as any one of the upper laser-drilled plate 1, middle laser-drilled plate 5, or lower laser-drilled plate 7 contacts the propellant, capillary force can smoothly transport the propellant into the bubble trap, realizing the propellant transport and management functions at high-accelerometer levels.

[0042] The contents not described in detail in this specification are common knowledge to those skilled in the art.

Claims

1. A plate-type management device for high-acceleration environments, characterized in that, Includes upper laser perforated plate, guide plate cover, guide plate seat, venting adapter pipe, middle laser perforated plate, venting pipe, lower laser perforated plate, bubble trap shell, trap laser perforated plate, and trap base; The guide plate seat is a plate-shaped groove structure with a certain width. The upper, middle, and lower laser-drilled plates are connected by guide plate cover plates and then fixed to the guide plate seat to form a guide channel. At least four even-numbered guide channels are fixed together through openings on the trap base, allowing any guide channel to connect to the inside of the bubble trap shell. The bubble trap shell is welded and fixed to the trap base. The trap laser-drilled plate is installed at the outlet of the bubble trap shell. The guide channel conforms to the inner wall of the propellant tank. One end of the vent pipe is fixed to the upper part of the bubble trap shell, and the other end is fixed to the guide plate seat of one of the guide channels through a vent adapter pipe and communicates with the guide channel. The number of upper laser holes in the upper laser drilling plate, middle laser drilling plate and lower laser drilling plate shall not be less than 100,000, the diameter of the laser holes shall be 0.001~0.003mm and the spacing between the laser holes shall be 0.1~0.2mm. The laser-drilled holes on the trap laser drilling plate have a diameter of 0.002~0.003mm and a number of holes of not less than 100,000, while meeting the requirements of filtration accuracy and flow resistance.

2. The plate-type management device for high acceleration environments according to claim 1, characterized in that: The upper laser perforation plate and the lower laser perforation plate are located at the top and bottom of the flow channel, respectively, and the number of the middle laser perforation plates is calculated based on the flow hydraulic radius being not less than 4mm.

3. The plate-type management device for high acceleration environments according to claim 1, characterized in that: The upper, middle, and lower laser perforated plates have a structural length of 50-70 mm and a width of 24-28 mm.

4. The plate-type management device for high acceleration environments according to claim 1, characterized in that: The width of the guide plate seat is 30~40mm, and the groove height is 3.5~5mm. Its structure meets the requirements of the hydraulic radius for conveying propellant.

5. The plate-type management device for high acceleration environments according to claim 1, characterized in that: The flow channels are evenly distributed circumferentially, enabling the management device to transfer propellant under different acceleration environments and magnitudes.

6. The plate-type management device for high acceleration environments according to claim 1, characterized in that: The bubble trap shell has an inner diameter of 80~120mm and a height of 60~80mm, so that the amount of propellant inside is small enough to reduce the amount of propellant remaining at the beginning of on-orbit refueling.

7. The plate-type management device for high acceleration environments according to claim 1, characterized in that: The gap between the flow channel and the inner wall of the tank is 3~6mm.

8. The plate-type management device for high acceleration environments according to claim 1, characterized in that: It can be repeatedly replenished with propellant in orbit, and the remaining amount of propellant at the initial refueling is not less than 2%.

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