CN114659749A - Planar passive ventilation navigation body model and application method thereof - Google Patents
Planar passive ventilation navigation body model and application method thereof Download PDFInfo
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- 238000009423 ventilation Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 210000003437 trachea Anatomy 0.000 claims abstract description 6
- 230000001629 suppression Effects 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 5
- 238000010146 3D printing Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 2
- 238000011105 stabilization Methods 0.000 claims description 2
- 238000005273 aeration Methods 0.000 claims 6
- 238000002474 experimental method Methods 0.000 abstract description 8
- 238000004088 simulation Methods 0.000 abstract description 5
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 210000003934 vacuole Anatomy 0.000 abstract 1
- 238000011160 research Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000476 body water Anatomy 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention provides a planar passive ventilation navigation body model and a using method thereof, which solve various practical problems of passive ventilation in the passive exhaust and water outlet process of a navigation body and overcome the adverse effects of a vacuole water tunnel experiment and a normal-pressure water tank experiment. The head area comprises a cavitation inhibition head type, the air cavity area is formed in a manner that a circle of exhaust holes are uniformly formed in one side of a constant volume plenum chamber, and the lower end of the constant volume plenum chamber is connected with a connecting plate; the regional urceolus internally mounted of urceolus has the gas holder, and it passes through trachea and constant volume plenum chamber intercommunication, urceolus side-mounting wing section support arm, and wing section support arm one end is connected with the urceolus, and the other end is connected with the slip table connecting plate, and check valve and pressure sensor are installed to gas holder lower extreme air inlet department. By using the method, the system numerical simulation and the typical test comparison of the launching processes at different depths are utilized to provide a basis for the subsequent analysis of the multi-factor influence rule of the porous bubble flow.
Description
Technical Field
The invention belongs to the technical field of multiphase flow experimental equipment, and particularly relates to a planar passive ventilation navigation body model and a using method thereof.
Background
In the process of cross-medium motion of a navigation body, monitoring of the motion rule of multiple degrees of freedom of a model, capturing of a flow field in a thin-size air film and multi-factor motion are difficult, the existing research focuses on the aspects of stability of motion of the navigation body, research on the posture of each medium and the like, the research on the bubble characteristics of porous bubbles in the same plane is less, at present, the navigation body adopts more rotary structures, the dimensions of air outlets of the rotary structures are different, and the air outlet effect of a plurality of air holes under the same variable and the posture change of the porous bubbles cannot be observed in the same visual angle.
And at present, the results of experimental and simulation researches on the morphological development of the exhaust gas film under the interference of real complex factors are few, so that the internal mechanisms of the complex problems need to be researched through experimental means. A laboratory scale model experiment is a means for researching the movement of an underwater vehicle. The model experiment has higher requirements on laboratory conditions, particularly the artificial ventilation model of the underwater vehicle model, for example, the experiment is carried out under the reduced pressure condition, the normal pressure water tank experiment cannot meet the condition of similar cavitation bubble number, and the better cavitation bubble fusion effect cannot be obtained. It can be seen that how to design a model device meeting design requirements is the key point of the navigation body model manipulation test.
Disclosure of Invention
In view of the above, the present invention is directed to a planar passive ventilation navigation body model and a method for using the same, so as to solve various practical problems of passive ventilation during passive exhaust and water discharge of a navigation body, overcome adverse effects of a cavitation water tunnel experiment and a normal pressure water tank experiment, and provide a navigation body water discharge model for passive exhaust.
In order to achieve the purpose, the invention adopts the following technical scheme: a plane type passive ventilation navigation body model comprises a head area, an air cavity area and an outer cylinder area, wherein the head area comprises cavitation suppression head shapes, and the left side and the right side of the top of the navigation body model adopt the cavitation suppression head shapes;
the air cavity area comprises a constant volume plenum chamber and a connecting plate; a circle of exhaust holes are uniformly formed in one side of the constant volume plenum chamber, the lower end of the constant volume plenum chamber is connected with a connecting plate, and the connecting plate is welded in the outer barrel; the urceolus is regional including solenoid valve, gas holder, gas pitcher base, check valve, urceolus, slip table connecting plate and wing section support arm, urceolus internally mounted has the gas holder, the gas holder passes through trachea and constant volume plenum chamber intercommunication, urceolus side-mounting has wing section support arm, wing section support arm one end is connected with the urceolus, and the other end is connected with the slip table connecting plate, check valve and pressure sensor are installed to the lower extreme air inlet department of gas holder, the upper end jet-propelled mouth department of gas holder installs the solenoid valve.
Further, the cavitation suppressing head is fixed by a head sealing plate and a jackscrew.
Furthermore, the constant volume plenum chamber is connected with the connecting plate through a plurality of bolts.
Furthermore, an electromagnetic valve is installed at an air jet opening at the upper end of the air storage tank.
Furthermore, the air storage tank is arranged in an air tank base, and the air tank base is fixed with the outer cylinder.
Furthermore, the distance and the path of the air path from the inlet of the constant volume plenum chamber to each exhaust hole are the same, so that the flow rate and the flow of the gas exhausted by each exhaust hole are the same, and the uniform exhaust effect is achieved.
Furthermore, the gas is temporarily stored in the gas storage tank, and an electromagnetic valve communicated with the gas storage tank from the outside is closed before the model of the navigation body moves, so that a certain amount of gas is stored in the gas storage tank in the model; when the model starts to move, the electromagnetic valve between the gas storage tank and the constant volume plenum chamber is opened, gas in the gas storage tank enters the constant volume plenum chamber through the gas pipe, the internal gas pressure of the constant volume plenum chamber is always greater than the external environment pressure in the water outlet process of the navigation body model, the gas is discharged through the exhaust hole, and the gas in the gas storage tank with the fixed volume is continuously supplemented to the constant volume plenum chamber, so that the passive exhaust effect is achieved.
A use method of the planar passive ventilation navigation body model specifically comprises the following steps:
(1) setting a pressure value required to be reached in a constant volume inflating chamber in an initial state, wherein the model is above the liquid level;
(2) opening an electromagnetic valve for controlling the air chamber, enabling external air to enter the air storage tank through a one-way valve, then discharging the external air from the air storage tank, entering a constant volume plenum chamber in an air chamber area through an air pipe, discharging the external air through an exhaust hole, and sinking the model into water after stabilization, wherein the water cannot enter the air chamber because the pressure in the constant volume plenum chamber is greater than the pressure in the external environment;
(3) and after the model reaches the bottom designated position, closing the electromagnetic valve, continuing exhausting the upper exhaust hole of the constant volume plenum chamber until the internal and external pressure difference is balanced, and discharging the gas out, and then performing a test.
The application of the planar passive ventilation navigation body model provides a basis for analyzing the subsequent multi-factor influence rule of the porous bubble-like flow by comparing system numerical simulation and typical tests in the launching process at different depths.
Compared with the prior art, the plane type passive ventilation navigation body model and the using method thereof have the beneficial effects that:
(1) and ventilating the vertical flat plate. At present, the motion of the flat plate under the horizontal condition is comprehensively researched, and the motion rule of the flat plate under the vertical emission condition is less researched. The invention adopts a vertical flat plate ventilation mode, and provides a basis for the subsequent multi-factor influence rule analysis of the porous bubble-like flow by using the system numerical simulation and typical test comparison of the emission processes at different depths.
(2) And uniform passive exhaust is ensured through a special structural design. The constant-volume plenum chamber is arranged in the navigation body, gas reaches the constant-volume plenum chamber through the gas storage tank, the constant-volume plenum chamber is connected with the gas inlet pipeline, and the distance and the path of the gas circuit from the inlet position of the constant-volume plenum chamber to each exhaust hole are the same, so that the flow velocity and the flow of the gas exhausted by each exhaust hole are the same, and the effect of uniform exhaust is achieved.
(3) And negative pressure ventilation. The invention temporarily stores the gas in the gas storage tank, and closes the valve communicated with the gas storage tank from the outside before the model moves, so that a certain amount of gas is stored in the gas storage tank in the model. When the model starts to move, the electromagnetic valve between the gas storage tank and the constant volume plenum chamber is opened, gas in the gas tank enters the constant volume plenum chamber through the gas pipe, the internal gas pressure of the constant volume plenum chamber is always greater than the external environment pressure in the water outlet process of the aircraft flat plate model, the gas is discharged through the exhaust hole, and the gas in the gas storage tank with the fixed volume is continuously supplemented to the constant volume plenum chamber, so that the passive exhaust effect is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic overall structure diagram of a planar passive ventilation navigation body model according to the present invention;
FIG. 2 is an exploded view of the overall apparatus of the planar passive ventilation navigation body model according to the present invention;
FIG. 3 is a front view of a constant volume plenum;
FIG. 4 is a bottom view of the constant volume plenum;
FIG. 5 is a sectional view taken along line A-A of the constant volume plenum;
FIG. 6 is a front view of a cavitation suppression head;
FIG. 7 is a top view of a cavitation suppression head form;
FIG. 8 is a sectional view H-H of a cavitation suppressing head;
reference numerals are as follows: 1-cavitation suppression head type, 2-jackscrew, 3-constant volume plenum chamber, 4-air chamber and outer cylinder connecting plate, 5-air pipe, 6-electromagnetic valve, 7-air storage tank, 8-air tank base, 9-one-way valve, 10-outer cylinder, 11-outer cylinder welding plate, 12-outer cylinder replacement plate, 13-airfoil shaped supporting arm and 14-sliding table connecting plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely explained below with reference to the drawings in the embodiments of the present invention. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict, and the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments.
First embodiment, referring to fig. 1 to 8 to describe the present embodiment, a planar passive ventilation navigation body model includes a head region, an air cavity region and an outer cylinder region, the head region includes a cavitation suppression head type 1, and the left and right sides of the top of the navigation body model adopt the cavitation suppression head type 1;
the air cavity area comprises a constant volume plenum chamber 3 and a connecting plate 4; a circle of exhaust holes are uniformly formed in one side of the constant volume plenum chamber 3, the lower end of the constant volume plenum chamber 3 is connected with a connecting plate 4, and the connecting plate 4 is welded inside the outer cylinder 10; the urceolus is regional including solenoid valve 6, gas holder 7, gas tank base 8, check valve 9, urceolus 10, slip table connecting plate 14 and wing section support arm 13, 10 internally mounted of urceolus has gas holder 7, gas holder 7 passes through trachea 5 and 3 intercommunications in constant volume plenum chamber, 10 side-mounting of urceolus has wing section support arm 13, wing section support arm 13 one end is connected with urceolus 10, and the other end is connected with slip table connecting plate 14, check valve 9 and pressure sensor are installed to the lower extreme air inlet department of gas holder 7, solenoid valve 6 is installed to the upper end air jet department of gas holder 7.
The constant-volume plenum chamber 3 is arranged in the sailing body, gas reaches the constant-volume plenum chamber 3 through the gas storage tank 7, the constant-volume plenum chamber 3 is connected with the gas pipe 4, the distance and the path from the gas pipe 4 to each exhaust hole at the inlet position of the constant-volume plenum chamber 3 are the same, and the flow velocity and the flow of the gas exhausted from each exhaust hole are the same so as to achieve the effect of uniform exhaust.
The air chamber 3 is connected with the connecting plate 4 through four bolts, and the connecting plate 4 is welded inside the outer cylinder 10. The connecting plate 4 is a connecting plate between the constant volume plenum chamber 3 and the outer cylinder 10.
The cavitation suppression head type 1 is fixedly connected with the jackscrew 2 through 3D printing head filler inside the head type.
The invention relates to a specific use process of an applied plane type passive ventilation navigation body model, which comprises the following steps:
(1) setting a pressure value required to be reached in the air chamber when the model is above the liquid level in an initial state;
(2) opening an electromagnetic valve 6 for controlling the air chamber, so that external air enters an air storage tank 7 through a one-way valve 9, is discharged from the air storage tank 7, enters the air chamber in the air chamber region through an air pipe 5, is discharged through an exhaust hole, and sinks the model into water after being stabilized;
(3) after the model reaches the bottom designated position, the air chamber control electromagnetic valve is closed, at the moment, the exhaust hole in the upper part of the air chamber continues to exhaust until the internal and external pressure difference is balanced, the gas is not discharged outside any more, and then the test is carried out.
The invention temporarily stores the gas in the gas storage tank 7, and closes the electromagnetic valve 6 communicated with the gas storage tank 7 from the outside before the model moves, so that a certain amount of gas is stored in the gas storage tank 7 in the model. When the model starts to move, the electromagnetic valve 6 between the gas storage tank 7 and the constant volume plenum chamber 3 is opened, gas in the gas storage tank 7 enters the constant volume plenum chamber 3 through the gas pipe 5, in the process of sailing body model water outlet, the internal gas pressure of the constant volume plenum chamber 3 is always greater than the external environment pressure, the gas is discharged through the exhaust hole, and the gas in the gas storage tank 7 with the fixed volume is constantly supplemented to the constant volume plenum chamber 3, so that the passive exhaust effect is achieved.
The installation process of the navigation body model applying the planar passive ventilation navigation body model comprises the following steps:
(1) install according to the order from bottom to top in proper order, put into model urceolus 10 with check valve 9 and gas pitcher base 8 earlier, secondly put into the recess of gas pitcher base 8 after connecting gas holder 7 with trachea 5, solenoid valve 6 install with gas holder 7 and constant volume plenum chamber 3 between, the three communicates with trachea 5.
(2) The constant volume plenum chamber 3 is connected with the air chamber and the outer cylinder connecting plate 4 through bolts, and the cavitation suppression head type 1 is connected and fixed with the jackscrew 2 through the 3D printing head filler inside the head type.
(3) Finally, an outer cylinder welding plate 11 and an outer cylinder replacement plate 12 are covered and connected with the outer cylinder 10 through bolts.
At present, the motion of the flat plate under the horizontal condition is comprehensively researched, and the motion rule of the flat plate under the vertical emission condition is less researched. The invention adopts a vertical flat plate ventilation mode, and provides a basis for the subsequent multi-factor influence rule analysis of the porous bubble-like flow by using the system numerical simulation and typical test comparison of the emission processes at different depths.
The embodiments of the invention disclosed above are intended merely to aid in the explanation of the invention. The examples are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention.
Claims (8)
1. A planar passive ventilation navigation body model is characterized in that: the navigation body model comprises a head area, an air cavity area and an outer cylinder area, wherein the head area comprises cavitation suppression head types (1), and the cavitation suppression head types (1) are adopted on the left side and the right side of the top of the navigation body model;
the air cavity area comprises a constant volume plenum chamber (3) and a connecting plate (4); a circle of exhaust holes are uniformly formed in one side of the constant volume plenum chamber (3), the lower end of the constant volume plenum chamber (3) is connected with a connecting plate (4), and the connecting plate (4) is welded inside the outer barrel (10); the urceolus is regional including solenoid valve (6), gas holder (7), gas tank base (8), check valve (9), urceolus (10), slip table connecting plate (14) and wing section support arm (13), urceolus (10) internally mounted has gas holder (7), gas holder (7) are through trachea (5) and constant volume plenum chamber (3) intercommunication, urceolus (10) side-mounting has wing section support arm (13), wing section support arm (13) one end is connected with urceolus (10), and the other end is connected with slip table connecting plate (14), check valve (9) and pressure sensor are installed to the lower extreme inlet department of gas holder (7), solenoid valve (6) are installed to the upper end jet-propelled mouth department of gas holder (7).
2. The planar passive-aeration sailing body model of claim 1, wherein: the cavitation suppression head type (1) is fixedly connected with the jackscrew (2) through a 3D printing head filler inside the head type.
3. The planar passive-aeration sailing body model of claim 1, wherein: the constant volume plenum chamber (3) is connected with the connecting plate (4) through a plurality of bolts.
4. The planar passive-aeration sailing body model of claim 1, wherein: and an electromagnetic valve (6) is installed at an air jet outlet at the upper end of the air storage tank (7).
5. The planar passive-aeration sailing body model of claim 1, wherein: the gas storage tank (7) is arranged in a gas tank base (8), and the gas tank base (8) is fixed with the outer cylinder (10).
6. The planar passive-aeration sailing body model of claim 1, wherein: the distance and the path from the air path to each exhaust hole at the inlet position of the constant volume plenum chamber (3) are the same, so that the flow rate and the flow of the gas exhausted by each exhaust hole are the same, and the effect of uniform exhaust is achieved.
7. The planar passive-aeration sailing body model of claim 1, wherein: temporarily storing the gas in a gas storage tank (7), and closing an electromagnetic valve (6) communicated with the gas storage tank (7) from the outside before the model of the navigation body moves so that a certain amount of gas is stored in the gas storage tank (7) in the model; when the model starts to move, the electromagnetic valve (6) between the gas storage tank (7) and the constant volume plenum chamber (3) is opened, gas in the gas storage tank (7) enters the constant volume plenum chamber (3) through the gas pipe (5), in the process of water outlet of the aeronautical body model, the internal gas pressure of the constant volume plenum chamber (3) is always greater than the external environment pressure, the gas is discharged through the exhaust hole, and the gas in the gas storage tank (7) with a fixed volume is continuously supplemented to the constant volume plenum chamber (3), so that the passive exhaust effect is achieved.
8. Use of a model of an application plane type passive ventilation navigation body according to any of claims 1 to 7, characterized in that: the method specifically comprises the following steps:
(1) in the initial state, the model is arranged above the liquid level, and the pressure value required to be reached in the constant volume plenum chamber (3) is set;
(2) opening an electromagnetic valve (6) for controlling the air chamber, enabling external air to enter an air storage tank (7) through a one-way valve (9), then discharging the external air from the air storage tank (7), entering a constant volume plenum chamber (3) in an air chamber area through an air pipe (5), discharging the external air through an exhaust hole, sinking the model into water after stabilization, and enabling the water not to enter the air chamber because the pressure in the constant volume plenum chamber (3) is greater than the pressure of the external environment;
(3) after the model reaches the bottom designated position, the electromagnetic valve (6) is closed, at the moment, the exhaust hole in the upper part of the constant volume plenum chamber (3) continues to exhaust until the internal and external pressure difference is balanced, and the gas is not discharged outside any more, and then the test is carried out.
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- 2022-02-28 CN CN202210193368.9A patent/CN114659749A/en active Pending
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| CN109596313A (en) * | 2019-01-11 | 2019-04-09 | 哈尔滨工程大学 | A kind of active aeration type underwater sailing body experimental rig |
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