Aerogenesis device for adjusting water outlet posture of navigation body and navigation body with aerogenesis device

Abstract

The invention provides a gas production device for adjusting the water outlet posture of a navigation body and the navigation body with the gas production device, and belongs to the field of water outlet experiments of navigation body models. The problems that a traditional navigation body is large in gas production structure, limited in inflation volume, non-adjustable in injection parameter and incapable of adjusting the propelling state according to the actual working condition of water outlet are solved. A gas generating device for adjusting the water outlet posture of a navigation body comprises a shell assembly, a gas generating device and a gas generating device, a mounting part is arranged in the shell assembly, positioning parts which are evenly distributed are arranged on the mounting part, exhaust ports which are arranged in a penetrating mode are formed in the peripheral side and the middle of the mounting part, and the outlet end of the shell assembly is detachably connected with a spraying throat; the propellants are arranged on the mounting part in a preset arrangement shape, and each propellant is connected with the corresponding positioning part; and the triggering assembly is connected with each propellant and is used for triggering the propellants to generate gas. The method is mainly used for adjusting the water outlet posture of the navigation body.

Description

Technical Field

[0001] The present invention belongs to the field of water-emergence experiments of a vehicle model, and in particular relates to a gas-generating device for adjusting the water-emergence posture of a vehicle and a vehicle having the same. Background Art

[0002] The high-speed movement of a vehicle in water will produce natural cavitation, causing a large number of cavitation bubbles to adhere to the surface of the vehicle. The cavitation bubbles will undergo processes such as initiation, development, fusion, shedding, and collapse, causing the vehicle to bear asymmetric hydrodynamic loads, which will have a great impact on the vehicle's motion posture in water and increase the risk of instability of the vehicle's motion posture, especially the water exit experiment of the vehicle model. In order to meet similar criteria with the prototype experiment, the water exit experiment of the vehicle model often needs to be carried out in a negative pressure environment. The pressure in the water in a negative pressure environment is reduced, which aggravates the occurrence of cavitation. In order to inhibit the occurrence of cavitation, reduce the hydrodynamic load of the vehicle's water exit movement, and increase the posture stability of the water exit movement, many scientific researchers have adopted the method of ventilating the surface of the vehicle to control the vehicle's water motion posture and improve stability.

[0003] Patent publication number CN109596313B discloses an actively ventilated underwater vehicle experimental device, in which an air chamber is arranged inside the vehicle, and the air chamber is connected to an external air pressure system through an air inlet pipe. The air chamber is inflated by the external air pressure system. The air chamber occupies a large space inside the vehicle, reducing the space utilization rate inside the vehicle. Moreover, the external air pressure system needs to be connected during inflation, which is very inconvenient to operate. Due to the limitations of the volume of the air chamber, the overall structural strength and the sealing performance, the inflation volume should not be too large.

[0004] The patent with publication number CN203732238U discloses a ventilation device for underwater supercavitation vehicle scale model experiments. The device sets a truncated cone cabin inside the vehicle. The truncated cone cabin and the vehicle model cabin structure are integrated. The truncated cone cabin structure itself serves as a gas cylinder, and there is no need to set up a separate gas cylinder. The complex internal structure is simplified and the space utilization rate is improved. However, the volume proportion of the truncated cone cabin is still relatively large for the entire experimental device, and the truncated cone cabin also needs an external gas source for inflation, which is very inconvenient to operate. Summary of the Invention

[0005] In view of this, the present invention aims to propose a gas-generating device for adjusting the posture of a navigation body out of the water and a navigation body having the same, so as to solve the problems of traditional navigation bodies having large gas-generating structures, limited inflation volume, unadjustable injection parameters and inability to adjust the propulsion state according to the actual working conditions out of the water.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions. According to a first aspect of the present invention, there is provided a gas generating device for adjusting the posture of a navigation body when it leaves the water, comprising:

[0007] A housing assembly is provided with a mounting portion therein, the mounting portion is provided with evenly arranged positioning portions, and exhaust ports are provided on the circumferential side and the middle portion thereof. A nozzle is detachably connected to the outlet end of the housing assembly, and the nozzle is blocked by a blocking portion, which is used to release the blockage when gas is generated;

[0008] A plurality of propellants are provided and arranged on the mounting portion in a predetermined arrangement shape, and each propellant is connected to a corresponding positioning portion;

[0009] A trigger assembly is connected to each propellant and is used to trigger the propellant to produce gas.

[0010] Furthermore, the exhaust port includes arc-shaped holes evenly distributed around the mounting portion and a plurality of circular holes distributed in the middle.

[0011] Furthermore, the propellant is detachably connected to the mounting portion via the fixing portion.

[0012] Furthermore, the end face of the mounting portion away from the propellant is connected to the top wall of the shell assembly through a pressure ring, and a retaining ring is provided between the end faces of the propellant close to the outlet end of the shell assembly.

[0013] Furthermore, the shell assembly includes an end cover and a tank body, a cavity is provided in the tank body for accommodating the mounting portion, and the end cover and the tank body are detachably and sealedly connected.

[0014] Furthermore, the end cover and the tank body are connected by a plurality of high-strength bolt assemblies, and an O-ring is provided on the joint surface between the two.

[0015] Furthermore, the end cover is provided with an opening connected to the tank cavity, a plug is provided in the opening, and the plug is fixed by a screw plug.

[0016] Furthermore, a sensor base is provided on the end cover for installing a sensor.

[0017] Furthermore, the arrangement shape of all the propellants is crescent-shaped or circular.

[0018] According to another aspect of the present invention, there is provided a vehicle, comprising the above-mentioned gas generating device for adjusting the vehicle's water exit posture, and further comprising:

[0019] A navigation body, wherein a gas collecting chamber is provided therein, the shell assembly is arranged in the navigation body and the outlet end is connected to the inlet end of the gas collecting chamber through a blocking portion;

[0020] There are several exhaust holes distributed around the head of the vehicle, and all of them are connected to the air collecting chamber.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present invention enables, under negative pressure conditions, a small, high-volume, high-capacity, high-strength, and well-sealed gas-generating device built into a vehicle to discharge gas toward the surface of a model vehicle during a water-out test. This adjusts the vehicle's motion in the water, suppresses natural cavitation, and enhances the stability of the vehicle's motion in the water, thereby improving the success rate of the vehicle's water-out test. The present invention utilizes the vehicle's control system to trigger the propellant in the gas-generating device. The triggering time can be set in the control system according to actual operating conditions. Upon triggering, the high-temperature, high-pressure gas generated by the propellant passes through a nozzle, piercing a polytetrafluoroethylene gasket and reaching a gas collection chamber inside the vehicle connected to the gas-generating device. The gas is then released through circular holes arranged around the circumference of the vessel and onto the vehicle's surface. This process continues for a period of time as the vehicle moves, adjusting the vehicle's motion, suppressing natural cavitation, and enhancing the vehicle's stability in the water. The nozzle size and propellant arrangement can also be adjusted to meet the actual operating conditions required for the vehicle's air discharge during the water-out test, expanding the scope of the experiment's application and possessing high practical engineering significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a front view of a gas generating device for adjusting the water exit posture of a navigation body according to the present invention;

[0025] Figure 2 A top view of a gas generating device for adjusting the water exit posture of a navigation body according to the present invention;

[0026] Figure 3 A top view of the mounting portion of the present invention;

[0027] Figure 4 This is a layout diagram of the propellant of the present invention arranged in a crescent shape on the mounting portion;

[0028] Figure 5 This is a layout diagram of the propellant of the present invention arranged in a circular shape on the mounting portion;

[0029] Figure 6 A top view of the retaining ring according to the present invention;

[0030] Figure 7 It is a structural schematic diagram of the navigation body described in the present invention.

[0031] End cover 1; tank body 2; screw plug 3; plug 4; pressure ring 5; fixing part 6; mounting part 7; propellant 8; retaining ring 9; nozzle 10; O-ring 11; O-ring groove 12; high-strength bolt assembly 13; sensor base 14; gas generating device 15; gas collecting chamber 16; exhaust hole 17; navigation body 18. DETAILED DESCRIPTION

[0032] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely explain the technical solutions in the embodiments of the present invention. It should be noted that the embodiments of the present invention and the features therein can be combined with each other in the absence of conflict, and the embodiments described are only part of the embodiments of the present invention, not all of the embodiments.

[0033] It should be noted that the descriptions of the present invention regarding directions such as "left", "right", "left side", "right side", "upper", "lower", "top", and "bottom" are all defined based on the relationship between the orientations or positions shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure described must be constructed and operated in a specific orientation. Therefore, they should not be understood as limitations on the present invention. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0034] In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0035] Referring to the accompanying drawings, this embodiment is described. According to one aspect of the present invention, there is provided a gas generating device for adjusting the posture of a vehicle exiting the water, comprising:

[0036] The housing assembly includes a mounting portion 7 with evenly spaced positioning features. Exhaust ports are provided along the sides and center of the housing assembly. A nozzle 10 is detachably connected to the housing assembly's outlet. This nozzle 10 is sealed by a sealing portion, which is used to release the seal when gas is generated. This sealing of the nozzle 10 avoids the need for valves and other components, reduces the pressure of the exhaust, and ensures initial sealing in water or negative pressure environments, while also preventing excessive pressure loss during exhaust. The sealing portion is specifically a polytetrafluoroethylene gasket, though other gasket types may also be used depending on practical needs.

[0037] The mounting portion 7 is specifically a disc-shaped plate with an exhaust port provided on the plate surface. The exhaust port includes arc-shaped holes evenly distributed around the mounting portion 7 and a number of circular holes distributed in the middle. After the propellant 8 is triggered, it can play the role of stabilizing the jet pressure and distributing the pressure evenly, so that the high-temperature and high-pressure gas generated can be smoothly ejected from the nozzle 10 after stabilizing the pressure. Various parameters such as the diameter of the nozzle 10 can be replaced and adjusted, and can be adjusted according to different conditions, thereby improving the use margin of the device. Specifically, an external thread is provided on the outer wall of the nozzle 10, and an internal thread is provided on the bottom wall of the shell assembly. The two are detachably connected by threaded fitting. Other forms of detachable connection can also be used according to actual needs. The outlet end of the nozzle 10 is sealed by a tetrafluoroethylene gasket when connected to the navigation body. Thanks to the presence of the tetrafluoroethylene gasket, the exhaust port 17 does not need to be provided with a separate one-way valve, which can reduce the exhaust resistance. The tetrafluoroethylene gasket can also be provided with other materials according to actual needs to meet the operating conditions.

[0038] Several propellants 8 are provided and arranged on the mounting portion 7 in a predetermined pattern. Each propellant 8 is connected to a corresponding positioning portion. The positioning portions are specifically openings, evenly arranged on the surface of the mounting portion 7, providing good prerequisites for different positioning states of the propellants 8. Different arrangements of the propellants 8 produce different propulsion effects.

[0039] The trigger assembly is connected to each of the propellants 8 and is used to trigger the propellant 8 to produce gas.

[0040] By using the propellant 8 to produce gas, it is possible to generate enough high-temperature and high-pressure gas to adjust the attitude under conditions of limited space, thus avoiding the problem of large gas-producing structures and limited inflation volume of traditional navigation bodies. The injection parameters can be reasonably replaced by the detachably connected nozzle 10 to solve the problem of non-adjustable injection parameters. At the same time, the arrangement of the propellant 8 can be adjusted, such as the crescent-shaped arrangement. With this arrangement, the peak pressure of the high-temperature and high-pressure gas in the high-pressure chamber is lower, but the peak gas production period is long. With the annular arrangement of the propellant, the peak pressure of the high-temperature and high-pressure gas in the high-pressure chamber is higher, but the peak gas production period is short. The corresponding arrangement of the propellant 8 can be selected according to the requirements to meet the corresponding use requirements and solve the problem of being unable to adjust the propulsion state according to the actual water discharge conditions.

[0041] In this embodiment, the exhaust port comprises arc-shaped holes evenly distributed around the periphery of the mounting portion 7 and a plurality of circular holes distributed in the center. Specifically, two circular holes are provided, symmetrically located in the center. The center formed by the line connecting the centers of these two circles is coaxial with the axis of the mounting portion 7, the housing assembly, and the nozzle 10. This ensures that the high-temperature, high-pressure gas generated by the high-energy chemical reaction is fully and instantly released, achieving a stable pressure release effect.

[0042] In this embodiment, the propellant 8 is detachably connected to the mounting portion 7 via the fixing portion 6. The fixing portion 6 is specifically a small nut with a threaded hole provided on the corresponding side of the propellant 8. The small nut passes through the positioning portion, i.e., the opening, on the mounting portion 7 and connects with the propellant 8 to secure the propellant 8. This allows the propellant 8 and the mounting portion 7 to form a single unit, facilitating installation and positioning.

[0043] In this embodiment, the end face of the mounting portion 7 facing away from the propellant 8 is connected to the top wall of the housing assembly via a pressure ring 5. A retaining ring 9 is disposed between the end face of the propellant 8 facing the outlet end of the housing assembly. The retaining ring 9 and the pressure ring 5 are provided to prevent structural damage to the end cap 1 and the tank body 2 caused by the impact of high-temperature and high-pressure gas generated by the propellant 8, thereby extending the service life.

[0044] In this embodiment, the shell assembly includes an end cap 1 and a tank body 2. A cavity is provided in the tank body 2 for accommodating the mounting portion 7. The end cap 1 and the tank body 2 are detachably sealed. The end cap 1 and the tank body 2 are the base of the entire gas production device 15 and are both made of high-strength materials. The joint surface between the two has a groove, and the O-ring 11 is set in the groove. The outside is locked with a number of high-strength bolt assemblies, which fully guarantees the strength and airtightness of the entire gas production device 15. The plug 4 and the screw plug 3 are installed on the left base of the end cap 1 in turn, the screw plug is tightened, and the screw plug hole is coated with silicone rubber for sealing. This operation needs to be carried out in advance, and subsequent operations can be carried out after the silicone rubber is completely cured. Then, the pressure sensor is installed on the sensor base 14 on the upper right side of the end cap 1. Before installation, a ring-shaped silicone pad needs to be placed at the bottom of the base to ensure sealing. The plug 4 is made of a material with good plasticity and is used to seal the upper inlet of the end cap 1. The screw plug 3 is tightened to fix the plug 4. The remaining internal structural parts, the retaining ring 9, the propellant 8, the fixing part 6, the pressure ring 5, and the installation part 7 are installed in the internal space surrounded by the end cover 1 and the tank body 2 in order from top to bottom. Finally, the nozzle 10, the O-ring adapted to the O-ring groove 12, and the polytetrafluoroethylene pad are installed under the tank body 2. When conducting the water exit experiment of the navigation body, the propellant placed in the high-pressure gas chamber is triggered by an external control system through a metal wire. The two ends of the metal wire are respectively connected to the propellant and the control system. An electric ignition tube is arranged at one end connected to the propellant to trigger the propellant. The high-temperature and high-pressure gas generated after the propellant is triggered passes through the nozzle 10 to penetrate the middle part of the polytetrafluoroethylene gasket and pass through the hole of the plug 4 and the screw plug 3. The high-temperature and high-pressure gas generated after the triggering passes through the nozzle 10 to penetrate the polytetrafluoroethylene gasket and reach the internal air collecting chamber of the navigation body, and then is discharged from the exhaust holes distributed along the circumference of the navigation body in the air collecting chamber, which plays a role in suppressing natural cavitation and adjusting the movement posture of the navigation body in the water. The inside of the tank body 2 is provided with an inclined surface along the direction of gas ejection to reduce the impact of the gas on the tank body 2. A plurality of threaded holes are provided on the outer wall of the tank body 2 to facilitate connection with the navigation body.

[0045] In this embodiment, the end cap 1 and the tank body 2 are connected by a plurality of high-strength bolt assemblies 13, and an O-ring 11 is provided on the joint surface between the two. There are specifically eight high-strength bolt assemblies 13, and eight bolt holes are provided in each of the end cap 1 and the tank body 2, with the corresponding positions and the bolt holes corresponding to each other.

[0046] In this embodiment, the end cover 1 is provided with an opening connected to the cavity of the tank body 2, and a plug 4 is provided in the opening, and the plug 4 is fixed by a screw plug 3. The plug 4 and the screw plug 3 are sequentially installed on the base on the left side of the end cover 1, and the screw plug 3 is tightened. The setting of the plug 4 and the screw plug 3 is to allow the metal wire of the triggering propellant 8 to pass through and to ensure that the gas pressure will not overflow from the plug 4 and the screw plug 3 after the triggering. Structurally, the plug 4 and the screw plug 3 are provided with a channel for the wire to pass through. The plug 4 is in close contact with the wire to ensure air tightness. At the same time, the plug 4 needs to be able to tightly block the channel on the screw plug 3 after being subjected to pressure to ensure that the gas does not escape and affect the gas flow and pressure flowing out of the nozzle 10.

[0047] In this embodiment, a sensor base 14 is provided on the end cap 1 for connecting a sensor. By installing a temperature sensor and a pressure sensor, the generated temperature and pressure are measured, providing a theoretical basis for subsequent improvements and changes in corresponding parameters such as the nozzle 23.

[0048] In this embodiment, all propellants 8 are arranged in a crescent or circular shape. A crescent-shaped propellant arrangement results in a lower peak pressure of the high-temperature, high-pressure gas within the high-pressure chamber, but a longer peak gas production period. A circular propellant arrangement results in a higher peak pressure of the high-temperature, high-pressure gas within the high-pressure chamber, but a shorter peak gas production period. The propellant 8 arrangement can be selected to meet specific application requirements.

[0049] According to another aspect of the present invention, there is provided a vehicle, comprising the above-mentioned gas generating device for adjusting the vehicle's water exit posture, and further comprising:

[0050] The navigation body 18 has a gas collecting chamber 16 disposed therein, and the housing assembly is disposed within the navigation body 18 and has an outlet connected to an inlet of the gas collecting chamber 16 via a blocking portion;

[0051] Several exhaust holes 17 are provided and distributed around the head of the vehicle 18, and are all connected to the gas collecting chamber 16. The gas generating device 15 is installed above the interior of the vehicle and connected to the gas collecting chamber. The high-temperature and high-pressure gas generated by the gas generating device is discharged to the outside of the vehicle through the gas collecting chamber and its circumferential exhaust holes to adjust the vehicle's motion posture in the water. According to different posture requirements, the parameters of the nozzle 10 and the quantity and arrangement of the propellant 8 can be changed to make the vehicle's motion posture in the water adjustable and predictable. After all the above components are assembled, the vehicle exiting the water experiment can be carried out. When the vehicle moves in the water, the gas generating device exhausts gas to the outer surface of the vehicle, suppressing natural cavitation, adjusting the vehicle's motion posture in the water, and improving the success rate of the experiment. The propellant arrangement and nozzle throat diameter can also be adjusted according to the actual working conditions to adjust the flow rate, pressure, and flow rate of the discharged high-temperature and high-pressure gas, thereby meeting the various complex working conditions of the vehicle exiting the water model experiment, which has high practical engineering significance.

[0052] The embodiments of the present invention disclosed above are intended only to illustrate the present invention. The embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Numerous modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention.

Claims

1. A gas generating device for adjusting the posture of a navigation body out of water, characterized in that: include: A housing assembly is provided with a mounting portion (7) therein, the mounting portion (7) is provided with evenly arranged positioning portions, and exhaust ports are provided on the circumferential side and the middle portion thereof and are arranged through the housing assembly. The outlet end of the housing assembly is detachably connected to a nozzle (10), and the nozzle (10) is blocked by a blocking portion, and the blocking portion is used to release the blockage when gas is generated; A plurality of propellants (8) are provided and arranged on the mounting portion (7) in a predetermined arrangement shape, and each propellant (8) is connected to a corresponding positioning portion; A trigger assembly is connected to each of the propellants (8) and is used to trigger the propellant (8) to produce gas.

2. The gas generating device for adjusting the water posture of a vehicle according to claim 1, characterized in that: The exhaust port comprises arc-shaped holes evenly distributed around the mounting portion (7) and a plurality of circular holes distributed in the middle.

3. The gas generating device for adjusting the water posture of a vehicle according to claim 1, characterized in that: The propellant (8) is detachably connected to the mounting portion (7) via the fixing portion (6).

4. The gas generating device for adjusting the water posture of a vehicle according to claim 1, characterized in that: The end face of the mounting portion (7) away from the propellant (8) is connected to the top wall of the shell assembly via a pressure ring (5), and a retaining ring (9) is provided between the end faces of the propellant (8) close to the outlet end of the shell assembly.

5. The gas generating device for adjusting the posture of a vehicle exiting water according to claim 1, 2, 3 or 4, characterized in that: The housing assembly comprises an end cover (1) and a tank body (2); a cavity is provided in the tank body (2) for accommodating the mounting portion (7); and the end cover (1) and the tank body (2) are detachably sealed.

6. The gas generating device for adjusting the water posture of a vehicle according to claim 5, characterized in that: The end cover (1) and the tank body (2) are connected via a plurality of high-strength bolt assemblies (13), and an O-ring (11) is provided on the joint surface between the two.

7. The gas generating device for adjusting the water posture of a vehicle according to claim 5, characterized in that: The end cover (1) is provided with an opening communicating with the cavity of the tank body (2), a plug (4) is provided in the opening, and the plug (4) is fixed by a screw plug (3).

8. The gas generating device for adjusting the water posture of a vehicle according to claim 5, characterized in that: The end cover (1) is provided with a sensor base (14) for mounting a sensor.

9. The gas generating device for adjusting the water posture of a vehicle according to claim 1, 2, 3, 4, 6, 7 or 8, characterized in that: The arrangement shape of all the propellants (8) is crescent-shaped or circular.

10. A vehicle comprising the gas generating device for adjusting the water posture of a vehicle according to claim 9, characterized in that: Also includes: A navigation body (18) is provided with a gas collecting chamber (16) therein, wherein the housing assembly is provided in the navigation body (18) and the outlet end is communicated with the inlet end of the gas collecting chamber (16) through a blocking portion; A plurality of exhaust holes (17) are provided and distributed around the head of the navigation body (18), and all of the exhaust holes (17) are communicated with the air collecting chamber (16).

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