Pre-cavitation control device based on supercavitation technology

Abstract

The utility model relates to the technical field of supercavitation resistance reduction of underwater vehicles, in particular to a preposed cavitation control device based on supercavitation technology, which comprises a cavitator, the right end of the cavitator is fixedly connected with an outer-layer cone section body, an embedded cone section sleeve I is arranged in the outer-layer cone section body, a ventilation sleeve is arranged in the embedded cone section sleeve I, and the ventilation sleeve is fixedly connected with the outer-layer cone section body. A gas temporary storage device is arranged at the right end of the ventilation sleeve, a gas pump is arranged at the tail end of the gas temporary storage device, and the ventilation sleeve is fixedly connected with the cavitator, the outer-layer conical section body, the first embedded conical section sleeve and the gas temporary storage device; the cavitation device, the outer-layer conical section body, the embedded conical section sleeve and the gas temporary storage device are connected through the ventilation sleeve, gas generated by the gas pump can be conveyed to the gas cavity in the middle of the double-layer structure of the cavitation device and the embedded conical section sleeve through the gas temporary storage device and the ventilation sleeve, and therefore gas temporary storage is achieved, and gas output is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of supercavitation drag reduction for underwater vehicles, and specifically relates to a front cavitation control device based on supercavitation technology. Background Art

[0002] China has vast sea areas and rich marine resources. The development and utilization of marine resources rely on advanced marine mechanical equipment, and underwater vehicles are indispensable high-tech tools for marine exploration. At the same time, the enhancement of maritime military strength also requires the research and development of advanced underwater weapons, and the supercavitation drag reduction technology is the key technology for increasing the speed of underwater weapons. Designing advanced supercavitating vehicles is the key to exploring marine resources and enhancing military strength. Supercavitating vehicles are based on the supercavitation principle. On the basis of ordinary vehicles, they utilize the surface cavitation to achieve the purpose of fast navigation and energy conservation.

[0003] However, the existing supercavitating vehicles require a relatively high navigation speed to generate natural supercavitation. However, by using a front cavitation control device and method, it is possible to generate and maintain a supercavitation with a stable shape at a relatively low navigation speed. In view of this, the utility model designs a front cavitation control device based on supercavitation technology to solve the above problems. Summary of the Utility Model

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a front cavitation control device based on supercavitation technology, which effectively solves the problems raised in the above background art.

[0005] To achieve the above object, the utility model provides the following technical solution: A front cavitation control device based on supercavitation technology, including a cavitator, the cavitator is located at the very front end of the vehicle, the cavitator is provided with annularly arranged cavitator microholes, the right end of the cavitator is fixedly connected with an outer conical section body, the outer conical section body is provided with annularly arranged outer conical section body microholes, an inner conical section sleeve one is arranged inside the outer conical section body, an air vent sleeve is arranged inside the inner conical section sleeve one, a gas storage is arranged at the right end of the air vent sleeve, an air pump is arranged at the end of the body storage, and the air vent sleeve is fixedly connected with the cavitator, the outer conical section body, the inner conical section sleeve one and the gas storage.

[0006] Preferably, an inner conical section sleeve two is arranged at the right end of the inner conical section sleeve one, an inner conical section sleeve three is arranged at the right end of the inner conical section sleeve two, and an inner conical section sleeve four is arranged on the right side of the inner conical section sleeve three.

[0007] Preferably, a control box is fixed inside the inner conical section sleeve one, the inner conical section sleeve two, the inner conical section sleeve three and the inner conical section sleeve four.

[0008] Preferably, a plurality of micro-holes are provided on each of the first embedded tapered sleeve, the second embedded tapered sleeve, the third embedded tapered sleeve, and the fourth embedded tapered sleeve.

[0009] Preferably, the first embedded tapered sleeve, the second embedded tapered sleeve, the third embedded tapered sleeve, and the fourth embedded tapered sleeve are all in close contact with the inner wall of the outer tapered section body. Each embedded tapered sleeve is composed of two layers, and an air cavity is formed between every two layers of the embedded tapered sleeves.

[0010] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0011] (1) By connecting the cavitator, the outer tapered section body, the embedded tapered sleeves, and the gas storage device through the ventilation sleeve, the present utility model can transport the gas generated by the air pump through the gas storage device and the ventilation sleeve to the air cavity between the cavitator and the double-layer structure of the embedded tapered sleeves, so as to realize gas storage and facilitate the output of gas.

[0012] (2) The double-layer structure combination of the embedded tapered sleeves of the present utility model can be controlled by the control box to rotate along the symmetry axis of the vehicle. When the embedded tapered sleeve rotates to the working condition where the micro-holes of the embedded tapered sleeve overlap with the micro-holes of the outer tapered section body, the gas can be released outward. When rotating to the working condition where the micro-holes of the embedded tapered sleeve do not overlap with the micro-holes of the outer tapered section body, the gas cannot be released outward. Combined with the multi-stage setting of the embedded tapered sleeves, the gas can be released outward in a multi-stage and controllable manner, thus ensuring the accuracy of gas release.

[0013] (3) By cooperating with the air pump and the gas storage device, the present utility model can generate gas for extending and maintaining the supercavitation shape, thus ensuring the gas release effect. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0015] In the drawings:

[0016] Figure 1 is the overall schematic diagram of the present utility model;

[0017] Figure 2 is the semi-sectional schematic diagram of the present utility model;

[0018] Figure 3 is the partial schematic diagram of the left end of the present utility model;

[0019] Figure 4 is the schematic diagram of the position one (overlap) of the micro-holes of the embedded tapered sleeve and the micro-holes of the outer tapered section body of the present utility model;

[0020] Figure 5 This is a schematic diagram of the position two (non-overlapping) of the micro-holes in the inner conical section sleeve and the micro-holes in the outer conical section body of the present utility model.

[0021] In the figure: 1 - cavitator, 2 - outer conical section body, 3 - ventilation sleeve, 4 - inner conical section sleeve one, 5 - inner conical section sleeve two, 6 - gas storage, 7 - inner conical section sleeve three, 8 - inner conical section sleeve four, 9 - air pump, 10 - micro-holes in the inner conical section sleeve, 11 - control box, 12 - micro-holes in the cavitator, 13 - micro-holes in the outer conical section body. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments; based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment 1 is given by Figures 1 - 2 The present utility model includes a cavitator 1, the cavitator 1 is located at the very front end of the vehicle, the cavitator 1 is used to induce the generation of natural cavitation bubbles, the cavitator 1 is provided with an annular array of micro-holes 12 in the cavitator, the micro-holes 12 in the cavitator are used to release the gas generated by the air pump 9, the right end of the cavitator 1 is fixedly connected to an outer conical section body 2, the outer conical section body 2 is used to fix the whole device, the outer conical section body 2 is provided with an annular array of micro-holes 13 in the outer conical section body, the micro-holes 13 in the outer conical section body are used to release air, an inner conical section sleeve one 4 is arranged inside the outer conical section body 2, a ventilation sleeve 3 is arranged inside the inner conical section sleeve one 4, a gas storage 6 is arranged at the right end of the ventilation sleeve 3, the gas storage 6 is used to store the gas released by the air pump 9, the gas storage 6 and the ventilation sleeve 3 are used to convey air, an air pump 9 is arranged at the end of the gas storage 6, and the ventilation sleeve 3 is fixedly connected to the cavitator 1, the outer conical section body 2, the inner conical section sleeve one 4 and the gas storage 6.

[0024] Embodiment 2 is based on Embodiment 1 and is given by Figures 3 - 5Given that the right end of the first inner tapered sleeve 4 is provided with the second inner tapered sleeve 5, the right end of the second inner tapered sleeve 5 is provided with the third inner tapered sleeve 7, the right side of the third inner tapered sleeve 7 is provided with the fourth inner tapered sleeve 8, and a control box 11 is fixed inside the first inner tapered sleeve 4, the second inner tapered sleeve 5, the third inner tapered sleeve 7, and the fourth inner tapered sleeve 8. The first inner tapered sleeve 4, the second inner tapered sleeve 5, the third inner tapered sleeve 7, and the fourth inner tapered sleeve 8 can rotate independently along the axis of symmetry of the vehicle through the control box 11. A plurality of micro-holes 10 of the inner tapered sleeve are provided on the first inner tapered sleeve 4, the second inner tapered sleeve 5, the third inner tapered sleeve 7, and the fourth inner tapered sleeve 8. The first inner tapered sleeve 4, the second inner tapered sleeve 5, the third inner tapered sleeve 7, and the fourth inner tapered sleeve 8 are all in close contact with the inner wall of the outer tapered body 2. Each inner tapered sleeve is composed of two layers, and an air cavity is formed between the two layers of the inner tapered sleeve. The inner tapered sleeve can rotate along the axis of symmetry of the vehicle under the control and adjustment of the control box;

[0025] When using this device, when the vehicle is running, the cavitator 1 induces the generation of natural cavitation bubbles, and then the air pump 9 starts to work to generate gas. The gas passes through the gas storage device 6 and the ventilation sleeve 3 and then reaches the cavitator 1, where the gas can be released outward through the micro-holes of the cavitator. The gas also passes through the ventilation sleeve 3 and reaches the air cavities formed by the double-layer structures of the first inner tapered sleeve 4, the second inner tapered sleeve 5, the third inner tapered sleeve 7, and the fourth inner tapered sleeve 8. Each stage of the inner tapered sleeve can perform a rotational motion under the hierarchical control of the control box 11. When the inner tapered sleeve rotates to an overlapping area between the micro-holes 10 of the inner tapered sleeve and the micro-holes 13 of the outer tapered body, the gas can be released outward from this stage of the inner tapered sleeve. On the contrary, when the inner tapered sleeve rotates to a non-overlapping area between the micro-holes 10 of the inner tapered sleeve and the micro-holes 13 of the outer tapered body, the gas cannot be released from this stage of the inner tapered sleeve. Based on this, according to the cavitation bubble morphology during the operation of the vehicle, the hierarchical control of gas release is realized through this device, thereby maintaining the stability of the cavitation bubbles.

[0026] The working process of the present utility model is as follows: when using this device, when the vehicle is running, the cavitator 1 induces the generation of natural cavitation bubbles, and then the air pump 9 starts to work to generate gas. The gas passes through the gas storage device 6 and the ventilation sleeve 3 and then reaches the cavitator 1. At this time, the gas can be released outward through the micropores of the cavitator. The gas also passes through the ventilation sleeve 3 and reaches the air cavities formed by the double-layer structures of the inner embedded conical section sleeve one 4, the inner embedded conical section sleeve two 5, the inner embedded conical section sleeve three 7, and the inner embedded conical section sleeve four 8. Each stage of the inner embedded conical section sleeve can be controlled by the control box 11 to perform a rotational movement in a hierarchical manner. When the inner embedded conical section sleeve rotates to an overlapping area between the micropores 10 of the inner embedded conical section sleeve and the micropores 13 of the outer conical section body, the gas can be released outward from this stage of the inner embedded conical section sleeve. On the contrary, when the inner embedded conical section sleeve rotates to a non-overlapping area between the micropores 10 of the inner embedded conical section sleeve and the micropores 13 of the outer conical section body, the gas cannot be released from this stage of the inner embedded conical section sleeve. Based on this, according to the cavitation bubble morphology during the operation of the vehicle, the hierarchical control of gas release is realized through this device, so as to maintain the stability of the cavitation bubbles.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0028] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A pre-cavitation control device based on supercavitation technology, characterized in that: The invention comprises a cavitator (1), wherein the cavitator (1) is located at the front end of the aircraft, the cavitator (1) is provided with a circular array of cavitator micropores (12), the right end of the cavitator (1) is fixedly connected to an outer cone section body (2), the outer cone section body (2) is provided with a circular array of outer cone section body micropores (13), the outer cone section body (2) is provided with an embedded cone section sleeve (4), the embedded cone section sleeve (4) is provided with a ventilation sleeve (3), the right end of the ventilation sleeve (3) is provided with a gas temporary reservoir (6), the end of the temporary reservoir (6) is provided with an air pump (9), and the ventilation sleeve (3) is fixedly connected to the cavitator (1), the outer cone section body (2), the embedded cone section sleeve (4) and the gas temporary reservoir (6).

2. The pre-cavitation control device based on supercavitation technology according to claim 1 is characterized in that: The right end of the embedded cone section sleeve one (4) is provided with an embedded cone section sleeve two (5), the right end of the embedded cone section sleeve two (5) is provided with an embedded cone section sleeve three (7), and the right side of the embedded cone section sleeve three (7) is provided with an embedded cone section sleeve four (8).

3. The pre-cavitation control device based on supercavitation technology according to claim 2 is characterized in that: A control box (11) is fixed inside the embedded cone section sleeve one (4), the embedded cone section sleeve two (5), the embedded cone section sleeve three (7), and the embedded cone section sleeve four (8).

4. The pre-cavitation control device based on supercavitation technology according to claim 3 is characterized in that: The embedded cone segment sleeve one (4), the embedded cone segment sleeve two (5), the embedded cone segment sleeve three (7), and the embedded cone segment sleeve four (8) are all provided with a plurality of embedded cone segment sleeve micropores (10).

5. The pre-cavitation control device based on supercavitation technology according to claim 4 is characterized in that: The embedded cone segment sleeve one (4), the embedded cone segment sleeve two (5), the embedded cone segment sleeve three (7), and the embedded cone segment sleeve four (8) are all tightly fitted with the inner wall of the outer cone segment body (2), and each embedded cone segment sleeve is composed of two layers, and an air cavity is formed between every two layers of embedded cone segment sleeves.

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