CN110763425A - Experimental device for simulating ice breaking of under-ice navigation body in different motion modes - Google Patents
Experimental device for simulating ice breaking of under-ice navigation body in different motion modes Download PDFInfo
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- CN110763425A CN110763425A CN201910934499.6A CN201910934499A CN110763425A CN 110763425 A CN110763425 A CN 110763425A CN 201910934499 A CN201910934499 A CN 201910934499A CN 110763425 A CN110763425 A CN 110763425A
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Abstract
The invention belongs to the technical field of ship ice breaking, and particularly relates to an experimental device for simulating ice breaking of an under-ice navigation body in different motion modes. The underwater ice breaking device measures the submergence depth of the navigation body through the depth position indicators arranged on two sides of the water pool, the hydraulic lifter drives the model of the underwater navigation body to move in different movement modes below the ice surface, so that the ice surface is excited to generate water elastic deformation, the hydraulic lifter drives the head and the tail of the model of the navigation body to move in a certain mode, so that the movement track of the model is controlled, the deformation of the ice surface is measured through the vertical displacement sensor on one side of the water pool, the ice breaking condition of the ice surface is observed, and the research on the ice breaking capacity of the underwater navigation body in different movement modes is realized. The invention can self-define and select the model motion mode and the navigation depth, can change the model shape and the ice layer thickness, and can efficiently research the damage degree of the ice surface under the action of different factors.
Description
Technical Field
The invention belongs to the technical field of ship ice breaking, and particularly relates to an experimental device for simulating ice breaking of an under-ice navigation body in different motion modes.
Background
In polar terms, the presence of ice provides a natural sheltering condition for the submarine, but also hinders the need for the submarine to launch water to perform its mission. In order to make the submarine successfully break ice and discharge water, the research of the submarine ice breaking technology becomes the focus of national defense attention of various countries. However, the united states and russia have broken through the technology of floating and breaking ice by using the structure of the submarine. However, the method for floating and breaking ice of the submarine has high requirements on the structural strength of the submarine, and provides higher requirements on the design of the submarine. At present, a more effective method is to utilize water elastic waves excited by the submarine when the submarine sails near an ice surface to break ice, on one hand, the submarine structure is prevented from being in direct contact with the ice surface, the submarine structure is protected to a certain extent, and on the other hand, the ice elastic waves on the ice surface have a large range, are flexible and have a better ice breaking effect. However, since submarine underwater travel has different motion modes and excited water elastic waves have different ranges and intensities, so that the ice breaking effect is different, the relationship between the motion mode of the underwater vehicle and the ice breaking effect needs to be analyzed and researched by experiments to find out the most effective ice breaking motion mode, thereby greatly improving the ice breaking capability of the vehicle. At present, researches on polar navigation and ice breaking of submarines are still lack, so that related experimental equipment is not available, and an experimental device capable of effectively simulating ice breaking of an under-ice navigation body in different motion modes is not available.
Disclosure of Invention
The invention aims to provide an experimental device for simulating ice breaking of an under-ice navigation body in different motion modes for researching polar region navigation and ice breaking of a submarine.
The purpose of the invention is realized by the following technical scheme: the test pool and the navigation body model are included; the bottom of the test pool is provided with a moving track; a hydraulic lifter is arranged below the navigation body model, and the navigation body model is arranged on the motion track through the hydraulic lifter; and a depth positioning instrument and a vertical displacement sensor are arranged in the test water tank.
The present invention may further comprise:
the bottom of the navigation body model is provided with a groove; two hydraulic lifters are arranged below the navigation body model, wherein the first hydraulic lifter is fixed in a groove below the tail of the navigation model, and the second hydraulic lifter is arranged in the groove and can slide along the groove; and the second hydraulic lifting instrument is connected with the first hydraulic lifting instrument through a spring.
The depth position indicators are arranged on the front side and the rear side of the test pool; the vertical displacement sensor is arranged at the upper part of the test water pool.
The test pool had glass sides.
The invention has the beneficial effects that:
the underwater ice breaking device measures the submergence depth of the navigation body through the depth position indicators arranged on two sides of the water pool, the hydraulic lifter drives the model of the underwater navigation body to move in different movement modes below the ice surface, so that the ice surface is excited to generate water elastic deformation, the hydraulic lifter drives the head and the tail of the model of the navigation body to move in a certain mode, so that the movement track of the model is controlled, the deformation of the ice surface is measured through the vertical displacement sensor on one side of the water pool, the ice breaking condition of the ice surface is observed, and the research on the ice breaking capacity of the underwater navigation body in different movement modes is realized. The invention can self-define and select the model motion mode and the navigation depth, can change the model shape and the ice layer thickness, and can efficiently research the damage degree of the ice surface under the action of different factors.
Drawings
Fig. 1 is a general schematic of the present invention.
FIG. 2 is a schematic view of a test basin of the present invention.
FIG. 3 is a schematic structural diagram of a model of a navigation body according to the present invention.
Fig. 4 is a graph illustrating an example of hydraulic lift movement.
FIG. 5 is a graph illustrating an example of an ice-falling trajectory of a vehicle.
Detailed Description
The following further describes embodiments of the present invention with reference to the accompanying drawings:
the invention relates to an experimental device for simulating ice breaking of an under-ice navigation body in different motion modes, which is mainly used for researching the ice breaking capacity of the navigation body under the ice surface in different motion modes. When the device is used, the water surface in the water pool is frozen into an ice surface in a low-temperature laboratory, the moving track drives the hydraulic lifting instrument to move forward at a certain speed, the hydraulic lifting instrument is started at the same time, the motion equations of the front hydraulic lifting instrument and the rear hydraulic lifting instrument are adjusted, so that the navigation body model navigates under ice in different motion modes, the navigation body causes disturbance of surrounding fluid, the disturbance is transmitted to the ice surface, and the ice surface is excited to generate water elastic waves. The depth positioning instrument measures the submergence depth of the navigation body, the vertical displacement sensor records the deformation characteristics of the ice surface, and the multi-parameter test is carried out by changing the conditions of the motion mode, the submergence depth, the ice thickness and the like of the navigation body, so that the ice breaking effect of the underwater navigation body in different motion modes is researched, and the motion mode of the most effective ice breaking is explored.
The invention relates to an experimental device for simulating ice breaking of an ice-below vehicle in different motion modes, which is mainly applied to the simulation of the ice breaking process of a water elastic wave excited by the ice-below vehicle in different motion modes and comprises a test water tank 1 with a glass side surface, a vehicle model 2, a motion track 3, a first hydraulic lifting instrument 4 (a model tail part), a second hydraulic lifting instrument (a model head part), an underwater depth positioning instrument 6, a vertical displacement sensor 7 and an ice surface 8.
In fig. 1 and 2, a test water tank 1 with a glass side surface is fixedly placed on the horizontal ground, an ice surface 8 is frozen on two side wall surfaces of the test water tank 1, a moving track 3 is fixed at the bottom of the water tank, a hydraulic lifting instrument 4 and a hydraulic lifting instrument 5 are installed on the track, a navigation body model 2 is connected with the lifting instrument at a groove 11 below the navigation body through a gasket 9, the lifting instrument 4 is fixed, the lifting instrument 5 can slide in the groove 11 along with the gasket 9, and a compression spring 10 is fixed between the lifting instruments at two sides (the gasket 9 can slide in the groove 11, but is limited by the spring, and the gasket 9 is fixed in the groove 11). The depth positioning instrument 6 is fixed at the front end and the rear end of the test water tank 1, and the vertical displacement sensor 7 is installed at one side of the water tank close to the ice surface.
The lift appearance links to each other with navigation body model, and in order to prevent that the navigation body from appearing damaging because tensile or extrusion when the lift appearance drives the model and carries out elevating movement, the solution is as follows: the navigation body below is fluted, and the lift appearance passes through the gasket and links to each other with the navigation body in the recess, and the lift appearance of afterbody one side is fixed, and the lift appearance of prelude one side can follow the recess and slide, links to each other by compression spring between the lift appearance of both sides, and compression spring can play the regulation cushioning effect when model lift process receives tensile or extrudeing.
The movement mode of the navigation body can be realized by adjusting the movement of the lifter. The motion mode of the tail side lifter is set to be sin (ω t), the motion mode of the head side lifter is set to be sin (ω t- θ), the pitch angle of the navigation body during motion can be changed by changing the value of θ, the pitch frequency of the model can be controlled by changing the value of ω, and the specific motion track of the navigation body can be controlled by changing the magnitudes of ω, θ and the advancing speed. By setting the specific lifting mode of the lifter, the underwater vehicle can move in the sine-cosine wave waveform or Stokes wave waveform mode, so that the difference of ice breaking effects of the underwater vehicle under different movement modes is researched.
Before the experiment, a certain amount of water is injected into an experimental water pool, and the water surface in the water pool is frozen into an ice surface in a low-temperature laboratory. The moving track is fixed at the bottom of the water pool, and a hydraulic lifting instrument is arranged on the track and can drive the lifting instrument to move at a certain speed. Depth position indicators are arranged on the front side and the rear side of the pool to measure the depth of the navigation body under water. And a vertical displacement sensor is arranged at a position close to the ice surface on one side of the water pool to measure the deformation condition of the ice surface.
The hydraulic lifters 4 and 5 are started to move according to the movement curve illustrated in fig. 4, the movement track 3 drives the lifters to move forward at a certain speed, and the navigation body model 2 moves below the ice surface 8, so that the navigation body can simulate the movement below the ice surface in different modes. The motion of the under-ice vehicle can excite fluid disturbance, thereby exciting the ice surface to generate hydro-elastic response. At this time, the indication of the vertical displacement of the ice surface measured by the vertical displacement sensor 7 is recorded, and the deformation of the ice layer is observed. The submergence depth of the model is recorded by the depth locator 6. And the movement track of the hydraulic lifting instrument is controlled by changing the values of omega and theta and the advancing speed, so that the mode of the underwater movement of the navigation body model is changed, the displacement in the vertical direction of the ice surface measured by the vertical displacement sensor 7 is recorded again, whether the ice surface is damaged or not is observed, and the ice breaking capacity of the underwater navigation body for breaking ice in different movement modes is explored. The invention can also observe the deformation condition and the ice breaking condition of the ice surface under different conditions by changing the parameters of the underwater vehicle such as the submergence depth, the ice layer thickness and the like.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides an experimental apparatus that simulation under ice navigation body opens ice with different motion modes which characterized in that: the test pool and the navigation body model are included; the bottom of the test pool is provided with a moving track; a hydraulic lifter is arranged below the navigation body model, and the navigation body model is arranged on the motion track through the hydraulic lifter; and a depth positioning instrument and a vertical displacement sensor are arranged in the test water tank.
2. The experimental device for simulating the icebreaking of the under-ice vehicle in different movement modes according to claim 1, characterized in that: the bottom of the navigation body model is provided with a groove; two hydraulic lifters are arranged below the navigation body model, wherein the first hydraulic lifter is fixed in a groove below the tail of the navigation model, and the second hydraulic lifter is arranged in the groove and can slide along the groove; and the second hydraulic lifting instrument is connected with the first hydraulic lifting instrument through a spring.
3. An experimental device for simulating the icebreaking of an ice-below-ice vehicle in different movement modes according to claim 1 or 2, characterized in that: the depth position indicators are arranged on the front side and the rear side of the test pool; the vertical displacement sensor is arranged at the upper part of the test water pool.
4. An experimental device for simulating the icebreaking of an ice-below-ice vehicle in different movement modes according to claim 1 or 2, characterized in that: the test pool had glass sides.
5. The experimental device for simulating the icebreaking of the under-ice vehicle in different movement modes according to claim 3, wherein: the test pool had glass sides.
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| CN201910934499.6A CN110763425B (en) | 2019-09-29 | 2019-09-29 | Experimental device for simulating ice breaking of under-ice navigation body in different motion modes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199508A (en) * | 2021-12-10 | 2022-03-18 | 哈尔滨工程大学 | Test device and method for researching multi-posture maneuvering ice breaking of submerged body under ice |
| CN114199509A (en) * | 2021-12-10 | 2022-03-18 | 哈尔滨工程大学 | Test device and method for researching ice breaking of under-ice object through uniform linear motion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114199508A (en) * | 2021-12-10 | 2022-03-18 | 哈尔滨工程大学 | Test device and method for researching multi-posture maneuvering ice breaking of submerged body under ice |
| CN114199509A (en) * | 2021-12-10 | 2022-03-18 | 哈尔滨工程大学 | Test device and method for researching ice breaking of under-ice object through uniform linear motion |
| CN114199509B (en) * | 2021-12-10 | 2023-08-01 | 哈尔滨工程大学 | Test device and method for researching uniform linear motion ice breaking of object under layer ice |
| CN114199508B (en) * | 2021-12-10 | 2024-07-23 | 哈尔滨工程大学 | Test device and method for researching dynamic ice breaking of submerged body under ice in multiple postures |
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