Liquid level fluctuation suppression container and liquid level fluctuation suppression container processing method

Abstract

The present invention provides a container for suppressing liquid level fluctuations and a method for processing the container for suppressing liquid level fluctuations, and relates to the technical field of liquid storage equipment. The container for suppressing liquid level fluctuations provided by the present invention comprises: a liquid storage container and a micro-nano structure arranged at the bottom of the inner cavity of the liquid storage container; the micro-nano structure is formed by spraying a coating reagent and curing it, and the coating reagent comprises: hydrophobic silica, polydimethylsiloxane and PDMS curing agent, and the micro-nano structure is flexible. The micro-nano structure forms a plurality of flow locking grooves arranged at intervals, which can form a liquid film at the contact point between the liquid and the micro-nano structure, and seal under the liquid film to form an air film layer. The compression performance of the air film layer consumes the power of the up and down vibration of the liquid, thereby suppressing liquid level fluctuations. Compared with the baffle structure, the liquid level fluctuation suppression reduces the weight of the container and improves the flexibility of the applicable scenarios of the liquid level fluctuation suppression container.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid storage equipment, and in particular to a container for suppressing liquid level fluctuation and a method for processing the container for suppressing liquid level fluctuation. Background Art

[0002] Liquid propellant accounts for at least 90% of a spacecraft's total weight. Liquid propellant level fluctuations determine a spacecraft's performance, lifespan, and reliability. Traditionally, the method for suppressing modal conversion of liquid level fluctuations involves adding baffles. This approach not only increases the spacecraft's total weight but also lacks flexibility. It is only effective at the longitudinal height of the baffle, limiting its operational conditions. It is ineffective when the remaining propellant is low and the liquid level is below the baffle. Summary of the Invention

[0003] The purpose of the present invention is to provide a container for suppressing liquid level fluctuations and a method for processing the container for suppressing liquid level fluctuations, so as to slow down the liquid level fluctuations inside the liquid storage container and alleviate the technical problems of the heavy weight and low flexibility of the container for suppressing liquid level fluctuations.

[0004] In a first aspect, the present invention provides a container for suppressing liquid level fluctuations, comprising: a liquid storage container and a micro-nano structure disposed at the bottom of an inner cavity of the liquid storage container;

[0005] The micro-nano structure forms a plurality of flow-locking grooves that are spaced apart.

[0006] In combination with the first aspect, the present invention provides a first possible implementation of the first aspect, wherein the micro-nano structure is made of a flexible material.

[0007] In combination with the first aspect, the present invention provides a second possible implementation of the first aspect, wherein the micro-nano structure is formed on the bottom of the inner cavity of the liquid storage container by spraying a coating agent and curing it;

[0008] The coating agent comprises: 1.2 to 1.8 weight components of hydrophobic silicon dioxide, 0.8 to 1 weight component of polydimethylsiloxane, and 0.05 to 0.15 weight component of PDMS curing agent.

[0009] In combination with the second possible implementation of the first aspect, the present invention provides a third possible implementation of the first aspect, wherein the particle size of the hydrophobic silica is configured to be 5 nm to 15 nm.

[0010] In combination with the first aspect, the present invention provides a fourth possible implementation manner of the first aspect, wherein the micro-nano structure includes a plurality of spaced-apart protrusions, and the flow-locking groove is formed between any two adjacent protrusions;

[0011] The protrusions include cylindrical protrusions, spherical protrusions, needle-point protrusions or mushroom-shaped protrusions.

[0012] In a second aspect, the present invention provides a method for processing a container for suppressing liquid level fluctuations, comprising the following steps:

[0013] A micro-nano structure is formed on the bottom of the inner cavity of the liquid storage container, and a plurality of flow-locking grooves arranged at intervals are formed on the surface of the micro-nano structure.

[0014] In combination with the second aspect, the present invention provides a first possible implementation of the second aspect, wherein the step of forming a micro-nano structure on the bottom of the inner cavity of the liquid storage container includes: preparing the micro-nano structure using a flexible material.

[0015] In combination with the first possible implementation manner of the second aspect, the present invention provides a second possible implementation manner of the second aspect, wherein the step of preparing the micro-nano structure using a flexible material includes:

[0016] preparing coating reagents;

[0017] spraying the coating reagent onto the bottom of the inner cavity of the liquid storage container multiple times;

[0018] The coating agent is baked and heated to solidify to form the micro-nano structure.

[0019] In combination with the second possible implementation of the second aspect, the present invention provides a third possible implementation of the second aspect, wherein the step of preparing the coating reagent comprises:

[0020] 1.2 to 1.8 weight components of hydrophobic silica and 0.05 to 0.15 weight components of PDMS curing agent are respectively added to 0.8 to 1 weight component of polydimethylsiloxane, and then n-hexane is added;

[0021] The coating agent is stirred and ultrasonically dispersed.

[0022] In combination with the second aspect, the present invention provides a fourth possible implementation of the second aspect, wherein the method for processing a container for suppressing liquid level fluctuations further includes:

[0023] Before spraying the coating reagent onto the bottom of the inner cavity of the liquid storage container multiple times, the liquid storage container is cleaned with ethanol and deionized water, and then dried after cleaning.

[0024] The embodiments of the present invention bring about the following beneficial effects: a liquid storage container and a micro-nano structure arranged at the bottom of the inner cavity of the liquid storage container are used, and a plurality of spaced flow locking grooves are formed by the micro-nano structure, so that a liquid film can be formed at the contact point between the liquid and the micro-nano structure, and an air film layer is sealed under the liquid film. The compression performance of the air film layer consumes the power of the up and down vibration of the liquid, thereby suppressing the fluctuation of the liquid level. Compared with the use of a baffle structure to suppress the fluctuation of the liquid level, the weight of the container is reduced, and the flexibility of the applicable scenarios of the container for suppressing the fluctuation of the liquid level is improved.

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic diagram of a container for suppressing liquid level fluctuations provided by an embodiment of the present invention;

[0028] Figure 2 A top view of a container for suppressing liquid level fluctuations provided in an embodiment of the present invention.

[0029] Icon: 100-liquid storage container; 200-micro-nanostructure; 210-flow-locking groove; 220-protrusion. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second" and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation or integration.

[0032] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0033] like Figure 1 and Figure 2 As shown, the liquid level fluctuation suppression container provided by the embodiment of the present invention includes: a liquid storage container 100 and a micro-nano structure 200 arranged at the bottom of the inner cavity of the liquid storage container 100; the micro-nano structure 200 forms a plurality of flow locking grooves 210 arranged at intervals.

[0034] Specifically, the opening diameter of the flow-locking groove 210 is 1 μm to 100 μm, and the liquid in the liquid storage container 100 cannot penetrate into the flow-locking groove 210, so a liquid film is formed on the surface of the micro-nano structure 200, and a sealed air film layer is formed between the liquid film and the micro-nano structure 200. When subjected to a vibration shock in the direction of the plumb bob, the liquid in the liquid storage container 100 will press down the liquid film, thereby compressing the air film layer. In this way, the power of the liquid vibrating up and down can be continuously consumed, thereby achieving the purpose of suppressing liquid level fluctuations. The liquid surface can maintain modal stability under a higher external excitation amplitude and no modal conversion occurs. Compared with the use of a baffle structure to suppress liquid level fluctuations, the weight of the container is reduced, the container manufacturing cost is low, and it can be applied to a variety of usage scenarios such as rockets, satellites, cars and ships.

[0035] In the embodiment of the present invention, the micro-nano structure 200 is made of flexible material. When liquid impacts the micro-nano structure 200, the micro-nano structure 200 will produce flexible deformation, thereby improving the adhesion between the liquid and the micro-nano structure 200 and improving the effect of inhibiting liquid flow.

[0036] Furthermore, the bottom of the inner cavity of the liquid storage container 100 is sprayed with a coating agent and then solidified to form a micro-nano structure 200;

[0037] The coating agent comprises: 1.2-1.8 weight components of hydrophobic silica, 0.8-1 weight components of polydimethylsiloxane, and 0.05-0.15 weight components of PDMS curing agent.

[0038] The coating agent is hydrophobic. After solidification to form the micro-nano structure 200, the hydrophobicity of the flow-locking groove 210 is enhanced, which is beneficial to increase the thickness of the gas film layer under the liquid, thereby ensuring a sufficient amount of compressed gas.

[0039] Furthermore, the particle size of the hydrophobic silica is configured to be 5 nm to 15 nm, wherein the particle size of the hydrophobic silica can be configured to be 7 nm, 9 nm, 11 nm, or 13 nm. After spraying, fine protrusions 220 can be formed on the bottom surface of the inner cavity of the liquid storage container 100. The protrusions 220 can be composed of a single hydrophobic silica particle or a plurality of hydrophobic silica particles stacked and bonded together. Therefore, the size of the protrusions 220 can be adjusted by selecting hydrophobic silica of different particle sizes.

[0040] Furthermore, the micro-nano structure 200 includes a plurality of spaced-apart protrusions 220 , and a flow-locking groove 210 is formed between any two adjacent protrusions 220 ;

[0041] The protrusion 220 includes a cylindrical protrusion, a spherical protrusion, a needle-point protrusion, or a mushroom-shaped protrusion.

[0042] When liquid is contained within the liquid storage container 100, a small amount of liquid can enter the flow-locking groove 210, thereby blocking the opening of the flow-locking groove 210 and sealing the gas within the flow-locking groove 210. The liquid distributed along the surface of the micro-nanostructure 200 forms a liquid-sealing film, and the gas trapped in the flow-locking groove 210 by the liquid-sealing film forms an air film layer. This structural design is more rational, reduces manufacturing costs, and reduces the weight of the container.

[0043] like Figure 1 and Figure 2 As shown, the method for processing a container for suppressing liquid level fluctuations provided in an embodiment of the present invention includes the following steps: forming a micro-nano structure 200 at the bottom of the inner cavity of a liquid storage container 100, and forming a plurality of flow locking grooves 210 spaced apart on the surface of the micro-nano structure 200.

[0044] The method for processing a liquid level fluctuation suppression container described in this embodiment can be used to form the liquid level fluctuation suppression container described in the above embodiment. Multiple, spaced-apart flow-locking grooves 210 are formed on the bottom of the inner cavity of the liquid storage container 100. This increases the roughness of the bottom surface of the inner cavity of the liquid storage container 100 and imparts a certain degree of hydrophobicity to the bottom surface of the inner cavity of the liquid storage container 100. This allows for the formation of a liquid-sealing film on the surface of the micro-nanostructure 200 and the formation of an air film beneath the liquid-sealing film. Liquid flowing laterally and impacting the micro-nanostructure 200 is subject to the adhesion force of the micro-nanostructure 200, thereby slowing down the flow of liquid. The longitudinally vibrating liquid compresses the air film, dissipating the energy of the liquid vibrating in the plumb bob direction, thereby suppressing the fluctuation of the liquid level within the container.

[0045] In the embodiment of the present invention, the step of forming the micro-nano structure 200 on the bottom of the inner cavity of the liquid storage container 100 includes: preparing the micro-nano structure 200 using a flexible material.

[0046] Specifically, the material of the micro-nano structure 200 can be silicone, rubber or other flexible colloid materials. When the flow locking groove 210 is formed, the adhesion between the micro-nano structure 200 and the liquid is improved, thereby helping to improve the micro-nano structure 200's ability to consume liquid power.

[0047] Furthermore, the steps of preparing the micro-nano structure 200 using the flexible material include:

[0048] preparing coating reagents;

[0049] Spraying the coating reagent onto the bottom of the inner cavity of the liquid storage container 100 multiple times;

[0050] The baking is heated to solidify the coating agent to form the micro-nano structure 200 .

[0051] The coating agent is sprayed in a small amount and multiple times, and the coating is ensured to be uniform by repeated spraying, thereby making the multiple flow locking grooves 210 distributed on the surface of the micro-nano structure 200 more uniform.

[0052] Furthermore, the step of preparing the coating reagent includes: adding 1.2 to 1.8 weight components of hydrophobic silica and 0.05 to 0.15 weight components of (polydimethylsiloxane curing agent) PDMS curing agent to 0.8 to 1 weight component of polydimethylsiloxane, and then adding n-hexane; stirring the coating reagent and ultrasonically dispersing the coating reagent.

[0053] The weight fraction of the hydrophobic silica can be selected as 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, or 1.8, the weight fraction of the PDMS curing agent can be selected as 0.05, 0.06, 0.08, 0.1, 0.12, 0.14, or 0.15, and the weight fraction of the polydimethylsiloxane (PDMS) can be selected as 0.8, 0.9, or 0.1. For example, 1.5 g of hydrophobic silica having a particle size of 7 nm is added to 1 g of polydimethylsiloxane (PDMS), 0.1 g of the PDMS curing agent is added, and finally 20 ml of n-hexane is added to form a coating reagent. Stirring and ultrasonic dispersion are performed to ensure that the components in the coating reagent are evenly mixed and dispersed. The duration of ultrasonic dispersion using an ultrasonic cleaning apparatus can be configured to be 5 minutes to 15 minutes, and the duration of ultrasonic dispersion can be increased or decreased according to the test results. In this embodiment, the preferred ultrasonic dispersion duration is 10 minutes.

[0054] Furthermore, the container processing method for suppressing liquid level fluctuations also includes: before spraying the coating reagent onto the bottom of the inner cavity of the liquid storage container 100 multiple times, cleaning the liquid storage container 100 with ethanol and deionized water, and drying it after cleaning.

[0055] Specifically, the liquid storage container 100 can be a cylinder with a diameter of 1mm to 100mm and a height of 0.1mm to 60mm, and can be made of glass, stainless steel, or aluminum. Cleaning ensures the interior of the liquid storage container 100 is clean, thereby ensuring that the micro-nanostructure 200 can be stably attached to the interior of the liquid storage container 100. After the coating agent is sprayed, the liquid level fluctuation suppression container can be baked in an oven at 90°C for 6 hours or until the micro-nanostructure 200 is fully cured.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A container for suppressing liquid level fluctuation, characterized in that: include: A liquid storage container (100) and a micro-nanostructure (200) arranged at the bottom of the inner cavity of the liquid storage container (100); The micro-nano structure (200) forms a plurality of flow-locking grooves (210) arranged at intervals; The micro-nano structure (200) is made of flexible material; The micro-nano structure (200) is formed by spraying a coating agent on the bottom of the inner cavity of the liquid storage container (100) and curing the coating agent; The coating agent comprises: 1.2 to 1.8 weight components of hydrophobic silicon dioxide, 0.8 to 1 weight component of polydimethylsiloxane, and 0.05 to 0.15 weight component of PDMS curing agent.

2. The liquid level fluctuation suppression container according to claim 1, characterized in that: The particle size of the hydrophobic silica is configured to be 5 nm to 15 nm.

3. The liquid level fluctuation suppression container according to claim 1, characterized in that: The micro-nano structure (200) comprises a plurality of spaced-apart raised portions (220), wherein the flow-locking groove (210) is formed between any two adjacent raised portions (220); The protrusion (220) includes a cylindrical protrusion, a spherical protrusion, a needle-point protrusion or a mushroom-shaped protrusion.

4. A method for processing a container for suppressing liquid level fluctuation, characterized in that: The following steps are involved: Processing a micro-nano structure (200) at the bottom of the inner cavity of the liquid storage container (100), and forming a plurality of flow-locking grooves (210) spaced apart on the surface of the micro-nano structure (200); The step of forming the micro-nano structure (200) on the bottom of the inner cavity of the liquid storage container (100) comprises: preparing the micro-nano structure (200) using a flexible material; The steps of using a flexible material to prepare the micro-nano structure (200) include: preparing a coating agent; spraying the coating agent onto the bottom of the inner cavity of the liquid storage container (100) multiple times; and baking and heating to solidify the coating agent to form the micro-nano structure (200); The steps of preparing the coating reagent include: adding 1.2 to 1.8 weight components of hydrophobic silica and 0.05 to 0.15 weight components of PDMS curing agent to 0.8 to 1 weight component of polydimethylsiloxane, and then adding n-hexane; stirring the coating reagent and ultrasonically dispersing the coating reagent.

5. The method for processing a container for suppressing liquid level fluctuation according to claim 4, wherein: The method for processing a container for suppressing liquid level fluctuations further comprises: Before spraying the coating reagent onto the bottom of the inner cavity of the liquid storage container (100) multiple times, the liquid storage container (100) is cleaned with ethanol and deionized water, and then dried after cleaning.

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