Storage box structure for storing liquid methane

Abstract

The utility model provides a storage tank structure for storing liquid methane. The storage tank structure comprises a storage tank and an oscillator, the storage box is used for storing liquid methane; the oscillator is arranged in the storage box, and the oscillator vibrates to enable liquid in the storage box to vibrate. According to the storage tank structure, the liquid methane is vibrated through the oscillator, so that the mixing and dissolving speed of the liquid methane and nitrogen can be reduced, and the pressure in the storage tank is ensured.

Description

Technical Field

[0001] The utility model relates to the field of rocket tanks, in particular to a tank structure for storing liquid methane. Background Art

[0002] Rocket propellants mainly include solid propellants, liquid propellants and solid-liquid mixed propellants. Among liquid propellants, liquid methane has the advantages of environmental protection, high efficiency, safety and low cost. After the rocket engine is started, in order to stably supply the liquid methane in the fuel tank to the combustion chamber of the engine for combustion to generate thrust, the pressure of the fuel tank needs to be guaranteed. Usually, nitrogen (such as high-pressure nitrogen) is required to pressurize the fuel tank. Due to the extremely low temperature of liquid methane, after the nitrogen is supplied to the fuel tank and contacts with the liquid methane, it will quickly mix and dissolve with the liquid methane, and the mixture will sink, thereby affecting the pressurization effect, resulting in the engine failing to ignite or insufficient thrust.

[0003] In order to reduce the dissolution rate of nitrogen and liquid methane mixture, it is particularly important to design a tank structure for storing liquid methane. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a storage tank structure for storing liquid methane.

[0005] The utility model provides a storage tank structure for storing liquid methane, comprising: a storage tank and an oscillator; the storage tank is used to store liquid methane; the oscillator is arranged in the storage tank, and the vibration of the oscillator causes the liquid in the storage tank to vibrate.

[0006] According to an embodiment of the utility model, the oscillator is movably arranged in the axial direction of the tank.

[0007] According to one embodiment of the utility model, it also includes an oscillator bracket arranged on the side wall of the tank, and the oscillator bracket is used to fix the oscillator; the oscillator bracket is movable relative to the side wall of the tank along the axial direction of the tank.

[0008] According to one embodiment of the utility model, the oscillator bracket includes a central ring, the central ring is perpendicular to the axial direction of the tank, and the oscillator is arranged on the central ring; the central ring is connected to the side wall of the tank through a support arm.

[0009] According to an embodiment of the present invention, a plurality of the oscillators are arranged along the circumferential direction of the central ring.

[0010] According to an embodiment of the utility model, a screw rod is provided on the side wall of the storage tank along the axial direction of the storage tank, and the support arm is slidably connected to the screw rod via a screw rod slider.

[0011] According to one embodiment of the utility model, a liquid level sensor is further included, and the liquid level sensor is used to measure the liquid level height of the liquid methane in the storage tank.

[0012] According to an embodiment of the present invention, the oscillator is an ultrasonic oscillator.

[0013] According to an embodiment of the present invention, the ultrasonic oscillator is wirelessly connected to a signal generator; the signal generator is used to send a signal to the ultrasonic oscillator to control the oscillation frequency and amplitude of the ultrasonic oscillator.

[0014] According to an embodiment of the present utility model, the liquid level sensor is electrically connected to a controller; the measurement value of the liquid level sensor is transmitted to the controller, and the controller adjusts the height of the oscillator according to the measurement value of the liquid level sensor.

[0015] According to the storage tank structure for storing liquid methane of the utility model, the liquid methane is vibrated by an oscillator, so that the speed of mixing and dissolving the liquid methane and nitrogen can be reduced, thereby ensuring the pressure in the storage tank.

[0016] It should be understood that the above general description and the following specific embodiments are only exemplary and illustrative and are not intended to limit the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following drawings are a part of the specification of the present utility model, which illustrate exemplary embodiments of the present utility model. The attached drawings and the description of the specification are used to explain the principle of the utility model.

[0018] Figure 1 It is a schematic diagram of a tank structure for storing liquid methane according to an embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of a tank structure for storing liquid methane according to an embodiment of the utility model;

[0020] Figure 3 It is a front view of a screw slider according to an embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1-storage tank; 2-oscillator; 3-oscillator bracket; 4-screw; 5-screw slider; 31-center ring; 32-support arm. DETAILED DESCRIPTION

[0023] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are used to illustrate the principles of the present invention, and are not configured to limit the present invention. In addition, the structural components in the drawings are not necessarily drawn to scale. For example, the sizes of some structural components or areas in the drawings may be enlarged for other structural components or areas to help understand the embodiments of the present invention.

[0024] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the utility model. In the description of the utility model, it should be noted that, unless otherwise specified, 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0025] In addition, the terms "include", "comprise", "have" or any other variations thereof are intended to cover non-exclusive inclusion, so that a structure or component including a series of elements includes not only those elements, but also other mechanical elements that are not explicitly listed or inherent in the structure or component. In the absence of more restrictions, the elements defined by the sentence "include..." do not exclude the existence of other identical elements in the article or device including the elements.

[0026] Spatially related terms such as "below", "beneath", "under", "low", "above", "on", "high", etc. are used to facilitate description to explain the positioning of one element relative to a second element, indicating that these terms are intended to cover different orientations of the device in addition to orientations different from those shown in the figures. In addition, for example, "one element is above / below another element" can mean that the two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, parts, etc., and do not specifically refer to the meaning of order or sequence, and should not be regarded as limiting. Similar terms are used throughout the description to represent similar elements.

[0027] In the following description of the present invention, in certain scenarios, only "rocket", "launch vehicle", "spacecraft", "space launch vehicle" or "missile" may be used. This is only for the convenience of description, and its connotation is not limited to the specific words used. When interpreting the above specific words, those skilled in the art shall not limit the rocket to only one of the launch vehicle or missile based on the specific words used to describe the scenario, thereby narrowing the protection scope of the present invention.

[0028] For those skilled in the art, the present invention can be implemented without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by showing examples of the present invention.

[0029] Figure 1 It is a schematic diagram of a tank structure for storing liquid methane according to an embodiment of the utility model; Figure 2 It is a schematic diagram of a tank structure for storing liquid methane according to an embodiment of the utility model; Figure 3 It is a front view of a screw slider according to an embodiment of the utility model.

[0030] like Figure 1 As shown, the utility model provides a tank structure for storing liquid methane, comprising: a tank 1 and an oscillator 2. The tank 1 is used to store liquid methane. The oscillator 2 is arranged in the tank 1, and the oscillator 2 vibrates to vibrate the liquid in the tank 1.

[0031] In this embodiment, for example, the oscillator 2 can be arranged below the liquid methane level in the tank. The tank structure can reduce the speed of liquid methane and nitrogen mixing and dissolving by oscillating the liquid methane through the oscillator 2, thereby ensuring the pressure in the tank.

[0032] According to an embodiment of the present invention, the oscillator 2 is movably arranged along the axial direction of the tank 1 .

[0033] According to one embodiment of the utility model, in addition to the tank 1 and the oscillator 2, the tank structure further includes an oscillator bracket 3 disposed on the side wall of the tank 1. The oscillator bracket 3 is used to fix the oscillator 2. The oscillator bracket 3 is movable relative to the side wall of the tank 1 along the axial direction of the tank 1.

[0034] In this embodiment, the oscillator bracket 3 moves along the side wall of the tank 1, and can drive the oscillator 2 to move along the axial direction of the tank 1 to adjust the height of the oscillator 2. For example, when the liquid methane level changes, it can be ensured that the oscillator 2 is always below the liquid methane level.

[0035] According to an embodiment of the present invention, the oscillator support 3 includes a central ring 31, which is perpendicular to the axial direction of the tank 1. The oscillator 2 is arranged on the central ring 31. The central ring 31 is connected to the side wall of the tank 1 through a support arm 32.

[0036] In this embodiment, for example, a plurality of supporting arms 32 (for example, 3) may be evenly arranged along the axial direction of the central ring 31 to ensure the stability of the central ring 31 .

[0037] Furthermore, the arm 32 may also be provided with an oscillator 2 .

[0038] According to an embodiment of the present invention, a plurality of oscillators 2 are arranged along the circumferential direction of the central ring 31 .

[0039] The tank structure of this embodiment can further reduce the mixed dissolution of liquid methane and nitrogen by arranging a plurality of oscillators 2 on the central ring 31. For example, a plurality of oscillators 2 can be evenly arranged on the central ring 31 along its circumferential direction.

[0040] like Figure 2 As shown, according to one embodiment of the utility model, a screw rod 4 is provided on the side wall of the tank 1 along the axial direction of the tank 1 , and the support arm 32 is slidably connected to the screw rod 4 via a screw rod slider 5 .

[0041] In this embodiment, the screw rod 4 can be welded to the side wall of the tank 1, or formed integrally with the tank, and the screw rod slider 5 and the side wall of the tank 1 can be spaced apart. Figure 3 As shown, the end surface where the screw slider 5 and the screw rod 4 are connected can be provided with a T-shaped groove, and correspondingly, the screw rod 4 is provided with a T-shaped boss that cooperates with the T-shaped groove to provide guidance and limitation for the movement of the screw slider 5.

[0042] According to an embodiment of the utility model, in addition to the storage tank 1 , the oscillator 2 and the oscillator bracket 3 , the storage tank structure further includes a liquid level sensor, and the liquid level sensor is used to measure the liquid level height of the liquid methane in the storage tank 1 .

[0043] The tank structure of this embodiment can dynamically adjust the height of the oscillator 2 by the measured value of the liquid level sensor so that the oscillator 2 is always below the liquid surface. For example, the oscillator is always below the liquid surface to reduce the mixing and dissolution rate of nitrogen and liquid methane. The liquid level sensor can be an ultrasonic liquid level sensor.

[0044] According to one embodiment of the present invention, the liquid level sensor can be arranged on the side wall of the storage tank 1 .

[0045] In this embodiment, for example, a plurality of liquid level sensors may be provided along the axial direction of the tank 1 .

[0046] According to an embodiment of the present invention, the oscillator 2 is an ultrasonic oscillator.

[0047] According to an embodiment of the present invention, the ultrasonic oscillator is wirelessly connected to the signal generator, which is used to send a signal to the ultrasonic oscillator to control the oscillation frequency and amplitude of the ultrasonic oscillator.

[0048] According to an embodiment of the present invention, the liquid level sensor is electrically connected to the controller. The measured value of the liquid level sensor is transmitted to the controller, and the controller adjusts the height of the oscillator 2 according to the measured value of the liquid level sensor.

[0049] In this embodiment, for example, the liquid level sensor is wirelessly connected to the controller, and the measured value (liquid level height) of the liquid level sensor is transmitted to the controller, which adjusts the height of the oscillator 2 according to the measured value of the liquid level sensor to ensure that the oscillator 2 remains below the liquid surface.

[0050] Furthermore, the signal generator is electrically connected to the controller, and the controller sends a control signal to the signal generator, and then the signal generator sends a signal to the ultrasonic oscillator to adjust the oscillation frequency and amplitude of the oscillator 2 .

[0051] The above-mentioned embodiments of the present invention can be combined with each other and have corresponding technical effects.

[0052] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tank structure for storing liquid methane, characterized in that: include: Tanks and oscillators; The storage tank is used to store liquid methane; The oscillator is arranged in the tank, and the vibration of the oscillator causes the liquid in the tank to vibrate; It also includes an oscillator bracket arranged on the side wall of the tank, and the oscillator bracket is used to fix the oscillator.

2. The tank structure according to claim 1, characterized in that: The oscillator support is movable relative to the side wall of the tank along the axial direction of the tank.

3. The tank structure according to claim 2, characterized in that: The oscillator bracket comprises a central circular ring, the central circular ring is perpendicular to the axial direction of the tank, and the oscillator is arranged on the central circular ring; the central circular ring is connected to the side wall of the tank through a supporting arm.

4. The tank structure according to claim 3, characterized in that: The central ring is provided with a plurality of oscillators along its circumferential direction.

5. The tank structure according to claim 3, characterized in that: A screw rod is arranged on the side wall of the storage tank along the axial direction of the storage tank, and the support arm is slidably connected to the screw rod through a screw rod slider.

6. The tank structure according to claim 5, characterized in that: It also includes a liquid level sensor, which is used to measure the liquid level height of liquid methane in the storage tank.

7. The tank structure according to claim 6, characterized in that: The oscillator is an ultrasonic oscillator.

8. The tank structure according to claim 7, characterized in that: The ultrasonic oscillator is wirelessly connected to a signal generator; the signal generator is used to send a signal to the ultrasonic oscillator to control the oscillation frequency and amplitude of the ultrasonic oscillator.

9. The tank structure according to claim 8, characterized in that: The liquid level sensor is electrically connected to the controller; the measurement value of the liquid level sensor is transmitted to the controller, and the controller adjusts the height of the oscillator according to the measurement value of the liquid level sensor.

Images