CN110132536B - Navigation body underwater launching experimental device for research of supercavitation mechanism - Google Patents
Navigation body underwater launching experimental device for research of supercavitation mechanism Download PDFInfo
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- CN110132536B CN110132536B CN201910419017.3A CN201910419017A CN110132536B CN 110132536 B CN110132536 B CN 110132536B CN 201910419017 A CN201910419017 A CN 201910419017A CN 110132536 B CN110132536 B CN 110132536B
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Abstract
The invention relates to a supercavitation experimental device, in particular to a navigation body underwater launching experimental device for supercavitation mechanism research. The device comprises a pneumatic transmitting system, a transmitting system supporting device, a water tank and an observation recording system, wherein the transmitting system supporting device is placed on one side of the water tank, which is provided with an electric knife gate valve, the pneumatic transmitting system is fixedly installed on the transmitting system supporting device, and the observation recording system is placed on one side of the water tank, which is provided with an acrylic plate. The invention can truly reflect the supercavitation phenomenon, and further change the launching speed of the navigation body by changing the air pressure set value of the high-pressure air cylinder of the pneumatic launching system, thereby realizing the supercavitation mechanism research of the navigation body with different speeds; by replacing the pipe valve connectors and the launching pipes with different inner diameter sizes of the pneumatic launching system, the navigation bodies with different sizes are launched, and research on the supercavitation mechanism of the navigation bodies with different sizes is realized; through changing the navigation body with different shapes of the pneumatic launching system, the research on the supercavitation mechanism of the navigation body with different shapes is realized.
Description
Technical Field
The invention relates to a supercavitation experimental device, in particular to a navigation body underwater launching experimental device for supercavitation mechanism research.
Background
When the navigation body navigates underwater at a high speed, the tiny gas nuclei carried on the outer surface of the navigation body rapidly expand under the action of local low pressure to form a large amount of visible bubbles. When the bubbles completely wrap the navigation body and are closed in an ellipsoidal shape in a fluid domain behind the stern of the navigation body, the phenomenon is called supercavitation. When the navigation body is in the super-cavitation state, the fluid contacted with the navigation body is vaporized, and the density of water vapor is much lower than that of air, so that the super-cavitation phenomenon can greatly reduce navigation resistance, and the speed of the navigation body is greatly improved, so that the research on the super-cavitation mechanism has great significance for the development of marine industry and the maintenance of marine interests in China.
The experiment is a main means for researching the supercavitation mechanism, and is divided into a water tunnel experiment and an underwater projectile experiment, the water tunnel experiment is mainly used at present, and the supercavitation phenomenon is generated by a method of introducing gas into a fixed navigation body model by using an external gas source under the condition of low water speed. In practical application, however, the vehicle needs to reach a high speed and unconstrained conditions to truly reflect the supercavitation. Therefore, the water tunnel experiment cannot truly reflect the supercavitation phenomenon, and a relatively accurate conclusion on the supercavitation mechanism research cannot be made. Therefore, it is an urgent technical problem for those skilled in the art to provide an underwater launching experimental apparatus capable of truly reflecting the supercavitation phenomenon and researching the supercavitation mechanism of the navigation body with different speeds, sizes and shapes.
Disclosure of Invention
In view of the above, the technical problems to be solved by the present invention are: how to provide an underwater launching experimental device which can truly reflect the supercavitation phenomenon and can research the supercavitation mechanism of the navigation body with different speeds, sizes and shapes. The technical scheme is as follows:
the invention relates to an underwater launching experimental device of a navigation body for researching a supercavitation mechanism, which comprises a pneumatic launching system, a launching system supporting device, a water tank and an observation and recording system, wherein the launching system supporting device is arranged on one side of the water tank, which is provided with an electric knife gate valve, the pneumatic launching system is fixedly arranged on the launching system supporting device, a launching tube of the pneumatic launching system is aligned to a tinfoil sheet, the observation and recording system is arranged on one side of the water tank, which is provided with an acrylic plate, a high-speed camera of the observation and recording system is aligned to the acrylic plate of the water tank, and the height of the high-speed camera is the same as that of the launching tube of the pneumatic; the supercavitation mechanism research of the sailing bodies with different speeds is realized by changing the air pressure set value of the high-pressure air cylinder of the pneumatic launching system and further changing the launching speed of the launching sailing body; by replacing the pipe valve connectors and the launching pipes with different inner diameter sizes of the pneumatic launching system, the navigation bodies with different sizes are launched, and research on the supercavitation mechanism of the navigation bodies with different sizes is realized; through changing the navigation body with different shapes of the pneumatic launching system, the research on the supercavitation mechanism of the navigation body with different shapes is realized.
Preferably, the pneumatic launching system comprises a high-pressure gas cylinder, a necking pipe, a normally closed solenoid valve, a pipe valve connector, a compression nut, a launching pipe and a navigation body, wherein the left end of the high-pressure gas cylinder is provided with an air pump for filling compressed air into the high-pressure gas cylinder, a valve and a pressure gauge are arranged between the air pump and the high-pressure gas cylinder, the right end of the high-pressure gas cylinder is provided with a flange, the left end and the right end of the normally closed solenoid valve are both provided with flanges, the left end of the necking pipe is fixedly connected with the flange at the right end of the high-pressure gas cylinder through a stud and a nut, the other end of the necking pipe is fixedly connected with the flange at the left end of the normally closed solenoid valve through a stud and a nut, the launching pipe is a hollow pipe, the outer cylindrical surface at the left end of the launching pipe is provided with, the two are connected and fixed through screw threads, the compression nut is sleeved outside the launching tube, and the two are in threaded connection.
Preferably, the valve is used for connecting and disconnecting the air pump and the high-pressure gas cylinder, the pressure gauge is used for displaying the air pressure in the high-pressure gas cylinder, and the compression nut abuts against the right end face of the pipe valve connector.
Preferably, the launching system supporting device comprises a first pipe clamp combination, a first height adjusting mechanism, a first connecting plate, a second height adjusting mechanism, a second pipe clamp combination, a sliding table module, a launching system bracket and a supporting rod, the first pipe clamp combination center line and the second pipe clamp combination center line are coaxial, the first height adjusting mechanism comprises a first adjusting bolt and a first adjusting nut, the first connecting plate comprises a first upper connecting plate and a first lower connecting plate, the bottom of the first pipe clamp combination is fixedly arranged on the upper surface of the first upper connecting plate, the first upper connecting plate, the first lower connecting plate and the first height adjusting mechanism are all in threaded connection, the distance between the first upper connecting plate and the first lower connecting plate is adjusted through the first height adjusting mechanism, so that the vertical height of the first pipe clamp combination is adjusted; the sliding table module comprises a fixing frame, a rotating rod and a movable sliding table, the lower end of the fixing frame is fixedly arranged on the upper surface of a launching system support, the rotating rod is rotatably arranged on the fixing frame, the left end of the rotating rod is provided with a rotating handle, the right end of the rotating rod is provided with an external thread, the middle part of the movable sliding table is provided with a threaded hole and is in threaded connection with the threaded section of the rotating rod, a first lower connecting plate is fixedly arranged on the upper surface of the movable sliding table, and the movable sliding table in threaded fit with the rotating handle is driven to move left and right along the fixing frame; the second connecting plate comprises a second upper connecting plate and a second lower connecting plate, the second height adjusting mechanism comprises a second adjusting bolt and a second adjusting nut, the bottom of the second pipe clamp combination is fixedly installed on the upper surface of the second upper connecting plate, the second lower connecting plate and the second height adjusting mechanism are in threaded connection, the distance between the second upper connecting plate and the second lower connecting plate is adjusted through the second height adjusting mechanism, and then the vertical height adjustment of the second pipe clamp combination is realized.
Preferably, the first pipe clamp combination comprises a pair of first pipe clamps, the first pipe clamps comprise a first upper pipe clamp and a first lower pipe clamp, the first upper pipe clamp and the first lower pipe clamp are installed together through screws, the first pipe clamp combination is used for clamping a high-pressure gas cylinder, the second pipe clamp combination comprises a pair of second pipe clamps, the second pipe clamps comprise a second upper pipe clamp and a second lower pipe clamp, the second upper pipe clamp and the second lower pipe clamp are installed together through screws, the second pipe clamp combination is used for clamping a transmitting pipe, the second lower connecting plate is fixedly connected with the transmitting system support through a supporting rod, and a universal wheel with a braking function, used for moving the transmitting system supporting device, is installed at the lower end of the transmitting system support.
Preferably, the water tank comprises a left baffle, a water tank base, a water tank frame, a front baffle, a rear baffle, an acrylic pressing bar, an acrylic plate, an electric knife gate valve, a tinfoil pressing plate, a scale, a hose joint, a ball valve, a right baffle and a bottom plate, the water tank base is formed by welding hollow section steel, a universal wheel with a brake function for moving the water tank is mounted at the bottom of the water tank base, the water tank frame is welded on the water tank base and is of a cuboid frame structure, the left baffle, the front baffle, the rear baffle, the right baffle and the bottom plate are all made of 304 stainless steel and welded on the upper surface of the water tank frame, the left baffle forms a left end face of the water tank, a through hole is formed in the left baffle, the electric knife gate valve is mounted at the through hole of the left baffle, the tinfoil pressing plate is mounted outside the electric knife gate valve, tin paper pieces are arranged between the tinfoil pressing, it has the rectangle window to open on it, and the ya keli layering has been arranged around the window, the ya keli layering is fixed the ya keli board in the front, on the backplate, the scale has been pasted to one side of ya keli board, the vertical height and the launching tube highly uniform of scale, it has the rubber gasket to fill up between ya keli board and preceding, the backplate, and rubber gasket both sides adopt sealed glue to seal, right side baffle constitutes the right side terminal surface of water tank, and it has the wash port to open on it, the ball valve left end links to each other with right baffle wash port, and the right-hand member links to each other with hose nipple, the bottom plate constitutes the bottom surface of water tank, and personally submits 1.2 degree angle slope with the level and arrange, the drainage of.
Preferably, the observation and recording system comprises a high-speed camera, a camera support, an auxiliary light source and a notebook computer, wherein the high-speed camera is mounted on the camera support, the camera support is positioned on one side of the water tank, on which the acrylic plate is mounted, the vertical height of the high-speed camera is consistent with the height of the emission tube, and the high-speed camera is connected with the notebook computer through a data line.
The invention has the beneficial effects that:
(1) compared with the existing water tunnel experiment device, the underwater projectile experiment device can more truly reflect the supercavitation phenomenon generated by the underwater vehicle during high-speed movement; the supercavitation mechanism of the navigation body with different speeds, sizes and shapes can be researched; meanwhile, the invention does not need to be externally provided with equipment such as pipelines and the like, and occupies smaller space.
(2) Compared with the existing underwater projectile experiment device adopting the artillery launching mode, the underwater projectile experiment device adopts the gas artillery launching mode, and the high-pressure air replaces gunpowder to provide the initial speed for the navigation body, so that the initial speed of the navigation body can be increased to hundreds of meters per second, and the launching effect is better; meanwhile, the invention has obvious advantages in the aspects of safety, environmental protection and the like, and has lower requirements on the laboratory environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1: the invention has the overall structure schematic diagram;
FIG. 2: the pneumatic launching system is structurally schematic;
FIG. 3: the launching system support device of the present invention is in a front view;
FIG. 4: the invention relates to a top view of a launching system supporting device;
FIG. 5: a left view of the launch system support apparatus of the present invention;
FIG. 6: a water tank front view of the present invention;
FIG. 7: a water tank left view of the invention;
FIG. 8: right view of the water tank of the present invention;
FIG. 9: the water tank of the present invention is in a top view;
FIG. 10: the invention discloses a structural schematic diagram of an observation and recording system;
FIG. 11: the invention discloses a physical diagram of a pneumatic launching system and a supporting device;
FIG. 12: the invention discloses a water tank object diagram;
FIG. 13: the invention is a navigation body supercavitation state diagram shot by the device.
Description of the symbols:
1. the system comprises a pneumatic launching system, 2, a launching system supporting device, 3, a water tank, 4 and an observation recording system; 101. the device comprises a high-pressure gas cylinder 102, a necking pipe 103, a normally closed solenoid valve 104, a pipe valve connector 105, a compression nut 106, a transmitting pipe 107 and a navigation body; 201. the device comprises a first pipe clamp combination, 202, a first height adjusting mechanism, 203, a first connecting plate, 203.1 a first upper connecting plate, 203.2 a first lower connecting plate, 204, a second connecting plate, 204.1 a second upper connecting plate, 204.2 a second lower connecting plate, 205, a second height adjusting mechanism, 206, a second pipe clamp combination, 207, a sliding table module, 207.1 a fixing frame, 207.2, a rotating rod, 207.3 a movable sliding table, 208, a launching system support, 209 and a supporting rod; 301. the water tank comprises a left baffle plate 302, a water tank base 303, a water tank frame 304, a front baffle plate and a rear baffle plate 305, an acrylic pressure strip 306, an acrylic plate 307, an electric knife gate valve 308, a tinfoil pressure plate 309, a scale 310, a hose connector 311, a ball valve 312, a right baffle plate 313 and a bottom plate; 401. a high-speed camera 402, a camera support 403, an auxiliary light source 404 and a notebook computer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The terms "first," "second," "third," and the like in the description and in the claims, and in the above-described drawings, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The invention is further illustrated by the following figures and examples:
as shown in fig. 1-13, the experimental apparatus for underwater launching of a vehicle for supercavitation mechanism research comprises a pneumatic launching system (1), a launching system supporting device (2), a water tank (3) and an observation recording system (4), wherein the launching system supporting device (2) is placed on one side of the water tank (3) where an electric knife gate valve (307) is installed, the pneumatic launching system (1) is fixedly installed on the launching system supporting device (2), a launching tube (106) of the pneumatic launching system (1) is aligned with a tin paper sheet, the observation recording system (4) is placed on one side of the water tank (3) where an acrylic plate (306) is installed, a high-speed camera (401) of the observation recording system (4) is aligned with the acrylic plate (306) of the water tank (3) and has the same height as the launching tube (106) of the pneumatic launching system (1); the supercavitation mechanism research of the navigation body (107) with different speeds is realized by changing the air pressure set value of the high-pressure air bottle (101) of the pneumatic launching system (1) and further changing the launching speed of the launching navigation body (107); by replacing the pipe valve connector (104) and the launching pipe (106) with different inner diameter sizes of the pneumatic launching system (1), the navigation bodies (107) with different sizes are launched, and the research on the supercavitation mechanism of the navigation bodies (107) with different sizes is realized; through replacing the navigation bodies (107) with different shapes of the pneumatic launching system (1), the research on the supercavitation mechanism of the navigation bodies (107) with different shapes is realized.
As shown in fig. 2, the pneumatic launching system (1) comprises a high-pressure gas cylinder (101), a necking pipe (102), a normally closed solenoid valve (103), a pipe valve connector (104), a gland nut (105), a launching pipe (106) and a navigation body (107), wherein the left end of the high-pressure gas cylinder (101) is provided with a gas pump for filling compressed air into the high-pressure gas cylinder (101), a valve and a pressure gauge are arranged between the gas pump and the high-pressure gas cylinder (101), the valve is used for connecting and disconnecting the gas pump and the high-pressure gas cylinder (101), the pressure gauge is used for displaying the air pressure in the high-pressure gas cylinder (101), the right end of the high-pressure gas cylinder (101) is provided with a flange, the left end and the right end of the normally closed solenoid valve (103) are provided with flanges, the left end of the necking pipe (102) is fixedly connected with the flange at the right end of the high-pressure gas cylinder (, the flange at the right end of the normally closed electromagnetic valve (103) is fixedly connected with the left end of the pipe valve connector (104) through a stud and a nut, the launching pipe (106) is a hollow pipe, external threads are arranged on the outer cylindrical surface of the left end of the launching pipe, the pipe valve connector (104) is of a hollow rotary body structure, internal threads are arranged at the hollow part and fixedly connected with the launching pipe through threads, the compression nut (105) is sleeved outside the launching pipe (106) and is in threaded connection with the launching pipe (106), the compression nut (105) abuts against the right end face of the pipe valve connector (104), and the pipe valve connector (104) and the launching pipe (106) can be replaced and used for launching the navigation bodies (107) with different diameters.
As shown in fig. 3-5, the launching system supporting device (2) comprises a first pipe clamp assembly (201), a first height adjusting mechanism (202), a first connecting plate (203), a second connecting plate (204), a second height adjusting mechanism (205), a second pipe clamp assembly (206), a sliding table module (207), a launching system bracket (208) and a supporting rod (209), wherein the central line of the first pipe clamp assembly (201) is coaxial with the central line of the second pipe clamp assembly (206), the first pipe clamp assembly (201) comprises a pair of first pipe clamps, the first pipe clamps comprise a first upper pipe clamp and a first lower pipe clamp, the first upper pipe clamp and the first lower pipe clamp are mounted together through screws, the first height adjusting mechanism (202) comprises a first adjusting bolt and a first adjusting nut, the first connecting plate (203) comprises a first upper connecting plate (203.1) and a first lower connecting plate (203.2), the bottom of the first pipe clamp combination (201) is fixedly arranged on the upper surface of a first upper connecting plate (203.1), the first upper connecting plate (203.1), a first lower connecting plate (203.2) and a first height adjusting mechanism (202) are in threaded connection, the distance between the first upper connecting plate (203.1) and the first lower connecting plate (203.2) is adjusted through the first height adjusting mechanism (202), so that the vertical height of the first pipe clamp combination (201) is adjusted, the first pipe clamp combination (201) is used for clamping a high-pressure gas cylinder (101), the sliding table module (207) comprises a fixing frame (207.1), a rotating rod (207.2) and a movable sliding table (207.3), the lower end of the fixing frame (207.1) is fixedly arranged on the upper surface of a transmitting system bracket (208), the rotating rod (207.2) is rotatably arranged on the fixing frame (207.1), the left end of the rotating rod (207.2) is provided with a rotating handle, and the right end is provided with external threads, the middle part of the movable sliding table (207.3) is provided with a threaded hole and is in threaded connection with a threaded section of the rotating rod (207.2), the first lower connecting plate (203.2) is fixedly arranged on the upper surface of the movable sliding table (207.3), and the movable sliding table (207.3) in threaded fit with the rotating rod (207.2) is driven to move left and right along the fixing frame (207.1) by rotating the rotating handle of the rotating rod (207.2), so that the horizontal position adjustment of the first pipe clamp combination (201) is realized; the second connecting plate (204) comprises a second upper connecting plate (204.1) and a second lower connecting plate (204.2), the second height adjusting mechanism (205) comprises a second adjusting bolt and a second adjusting nut, the second pipe clamp assembly (206) comprises a pair of second pipe clamps, the second pipe clamps comprise a second upper pipe clamp and a second lower pipe clamp, the second upper pipe clamp and the second lower pipe clamp are installed together through screws, the second pipe clamp assembly (206) is used for clamping the launching pipe (106), the bottom of the second pipe clamp assembly (206) is fixedly installed on the upper surface of the second upper connecting plate (204.1), the second lower connecting plate (204.2) and the second height adjusting mechanism (205) are in threaded connection, and the distance between the second upper connecting plate (204.1) and the second lower connecting plate (204.2) is adjusted through the second height adjusting mechanism (205), and then the vertical height of the second pipe clamp combination (206) is adjusted, the second lower connecting plate (204.2) is fixedly connected with a launching system bracket (208) through a supporting rod (209), and the lower end of the launching system bracket (208) is provided with a universal wheel with a braking function, which is used for moving the launching system supporting device (2).
As shown in fig. 6-9, the water tank (3) comprises a left baffle (301), a water tank base (302), a water tank frame (303), a front baffle (304), a rear baffle (304), an acrylic pressure strip (305), an acrylic plate (306), an electric knife gate valve (307), a tinfoil pressure plate (308), a scale (309), a hose connector (310), a ball valve (311), a right baffle (312) and a bottom plate (313), wherein the water tank base (302) is formed by welding hollow section steel, universal wheels with a braking function for moving the water tank (3) are installed at the bottom of the water tank base, the water tank frame (303) is welded on the water tank base (302) and is of a cuboid frame structure, the left baffle (301), the front baffle (304), the rear baffle (304), the right baffle (312) and the bottom plate (313) are all made of 304 stainless steel and are welded on the upper surface of the water tank frame (303), and the left baffle (301) forms the left end, it has the through-hole to open on it, electric knife gate valve (307) are installed in the through-hole department of left baffle (301), tinfoil clamp plate (308) are installed in electric knife gate valve (307) outside, and are equipped with the tinfoil piece between tinfoil clamp plate (308) and electric knife gate valve (307), preceding, backplate (304) constitute the front and back two sides of water tank (3), it has rectangular window to open on it, and acrylic layering (305) have been arranged all around to the window, acrylic layering (305) are fixed acrylic plate (306) in the front, on backplate (304), scale (309) have been pasted to one side of acrylic plate (306), the vertical height of scale (309) is highly unanimous with launching tube (106), it has the rubber gasket to fill up between acrylic plate (306) and preceding, backplate (304), and rubber gasket both sides adopt sealed glue to seal, right baffle (312) constitutes the right side end face of water tank (3), the water discharging hole is formed in the water tank, the left end of the ball valve (311) is connected with the water discharging hole of the right baffle (312), the right end of the ball valve is connected with the hose connector (310), the bottom plate (313) forms the bottom surface of the water tank (3), the bottom plate and the horizontal plane are obliquely arranged at an angle of 1.2 degrees, and water discharging is facilitated.
As shown in fig. 1 and 10, the observation and recording system (4) comprises a high-speed camera (401), a camera support (402), an auxiliary light source (403) and a notebook computer (404), wherein the high-speed camera (401) is mounted on the camera support (402), the camera support (402) is positioned on one side of the water tank (3) where the acrylic plate (306) is mounted, the vertical height of the high-speed camera (401) is consistent with the height of the transmitting tube (106), and the high-speed camera (401) is connected with the notebook computer (404) through a data line.
The working process of the experimental device for underwater launching of the navigation body for researching the supercavitation mechanism is divided into three stages of experimental preparation, experimental implementation and data processing.
An experiment preparation stage: the assembly of the pneumatic launching system (1), the launching system supporting device (2), the water tank (3) and the observation recording system (4) is completed, and then water is injected into the water tank (3) to enable the water surface to be located 1 meter above the launching tube (106); the tin paper sheet is clamped between an outer flange of an electric knife gate valve (307) and a tin paper pressing plate (308), the tin paper sheet is fixed through bolts, the electric knife gate valve (307) is opened, the tin paper sheet is determined not to leak water, an observation recording system (4) is checked again, the range needing to be shot can be clearly displayed on a screen of a notebook computer (404), finally, a navigation body (107) is installed at the initial position of a transmitting tube (106), compressed air is filled into a high-pressure gas cylinder (101) through an air pump, the air pump is removed after the pressure gauge indication of the high-pressure gas cylinder (101) reaches a specified value, and the transmitting tube (106) is aligned with the tin paper sheet.
The experiment is carried out: and (3) opening the normally closed electromagnetic valve (103), closing the electric knife gate valve (103) after the navigation body (107) penetrates through the tinfoil sheet and enters the water tank (3), and operating the high-speed camera (401) through the notebook computer (404) to obtain a picture of the motion state track of the navigation body (107) in the water.
And (3) a data processing stage: according to the acquired track picture of the motion state of the navigation body (107) in the water, the displacement of the navigation body (107) between two adjacent pictures can be obtained through a measuring ruler (309), the time interval of each two adjacent pictures can be determined according to the number of shooting frames, and then information such as the speed of the navigation body (107), the shape and the size of the supercavity and the like is obtained, and the whole working process is completed. The process can truly reflect the supercavitation phenomenon, and the launching speed of the launching navigation body (107) is changed by changing the air pressure set value of the high-pressure air bottle (101), so that the supercavitation mechanism research of the navigation bodies (107) with different speeds is realized; by replacing the pipe valve connector (104) and the transmitting pipe (106) with different inner diameter sizes, the navigation bodies (107) with different sizes are transmitted, and the research on the supercavitation mechanism of the navigation bodies (107) with different sizes is realized; through replacing the navigation bodies (107) with different shapes, the research on the supercavitation mechanism of the navigation bodies (107) with different shapes is realized.
Compared with the existing water tunnel experiment device, the underwater projectile experiment device can truly reflect the supercavitation phenomenon generated by the underwater vehicle during high-speed movement; the supercavitation mechanism of the navigation body with different speeds, sizes and shapes can be researched; meanwhile, the invention does not need to be externally provided with equipment such as pipelines and the like, and occupies smaller space. In addition, compared with the existing underwater projectile experiment device adopting the artillery launching mode, the underwater projectile experiment device adopts the gas artillery launching mode, and the high-pressure air replaces gunpowder to provide the initial speed for the navigation body, so that the initial speed of the navigation body can be increased to hundreds of meters per second, and the launching effect is better; meanwhile, the invention has obvious advantages in the aspects of safety, environmental protection and the like, and has lower requirements on the laboratory environment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (6)
1. A launching experimental apparatus under water of navigation body for super cavitation mechanism research, its characterized in that: the device comprises a pneumatic emission system (1), an emission system supporting device (2), a water tank (3) and an observation recording system (4), wherein the emission system supporting device (2) is placed on one side of the water tank (3) provided with an electric knife gate valve (307), the pneumatic emission system (1) is fixedly installed on the emission system supporting device (2), an emission tube (106) of the pneumatic emission system (1) is aligned to a tinfoil sheet, the observation recording system (4) is placed on one side of the water tank (3) provided with an acrylic plate (306), a high-speed camera (401) of the observation recording system (4) is aligned to the acrylic plate (306) of the water tank (3), the height of the high-speed camera (401) is the same as that of the emission tube (106) of the pneumatic emission system (1), and the emission speed of an emission navigation body (107) is changed by changing the air pressure set value of a high-pressure air bottle (101) of the pneumatic emission system (1), the research on the supercavitation mechanism of the navigation body (107) with different speeds is realized; by replacing the pipe valve connector (104) and the launching pipe (106) with different inner diameter sizes of the pneumatic launching system (1), the navigation bodies (107) with different sizes are launched, and the research on the supercavitation mechanism of the navigation bodies (107) with different sizes is realized; through changing the navigation body (107) of different appearances of the pneumatic launching system (1), the supercavitation mechanism research of the navigation body (107) of different appearances is realized, the launching system supporting device (2) comprises a first pipe clamp combination (201), a first height adjusting mechanism (202), a first connecting plate (203), a second connecting plate (204), a second height adjusting mechanism (205), a second pipe clamp combination (206), a sliding table module (207), a launching system bracket (208) and a supporting rod (209), the central line of the first pipe clamp combination (201) is coaxial with the central line of the second pipe clamp combination (206), the first height adjusting mechanism (202) comprises a first adjusting bolt and a first adjusting nut, the first connecting plate (203) comprises a first upper connecting plate (203.1) and a first lower connecting plate (203.2), the bottom of the first pipe clamp combination (201) is fixedly installed on the upper surface of the first upper connecting plate (203.1), the first upper connecting plate (203.1), the first lower connecting plate (203.2) and the first height adjusting mechanism (202) are in threaded connection, the distance between the first upper connecting plate (203.1) and the first lower connecting plate (203.2) is adjusted through the first height adjusting mechanism (202), so that the adjustment of the vertical height of the first pipe clamp combination (201) is realized, the sliding table module (207) comprises a fixing frame (207.1), a rotating rod (207.2) and a movable sliding table (207.3), the lower end of the fixing frame (207.1) is fixedly installed on the upper surface of a transmitting system support (208), the rotating rod (207.2) is rotatably installed on the fixing frame (207.1), the left end of the rotating rod (207.2) is provided with a rotating handle, the right end of the rotating rod is provided with an external thread, the middle of the movable sliding table (207.3) is provided with a threaded hole and is in threaded connection with the threaded section of the rotating rod (207.2), the first lower connecting plate (203.2) is fixedly installed, the rotating handle of the rotating rod (207.2) is rotated to drive the movable sliding table (207.3) in threaded fit with the rotating rod to move left and right along the fixed frame (207.1), so that the horizontal position of the first pipe clamp combination (201) is adjusted; the second connecting plate (204) comprises a second upper connecting plate (204.1) and a second lower connecting plate (204.2), the second height adjusting mechanism (205) comprises a second adjusting bolt and a second adjusting nut, the bottom of the second pipe clamp assembly (206) is fixedly installed on the upper surface of the second upper connecting plate (204.1), the second lower connecting plate (204.2) and the second height adjusting mechanism (205) are in threaded connection, the distance between the second upper connecting plate (204.1) and the second lower connecting plate (204.2) is adjusted through the second height adjusting mechanism (205), and then the vertical height adjustment of the second pipe clamp assembly (206) is realized.
2. The experimental device for underwater launching of a navigation body for research of the supercavitation mechanism as claimed in claim 1, is characterized in that: the pneumatic launching system (1) comprises a high-pressure gas cylinder (101), a necking pipe (102), a normally closed solenoid valve (103), a pipe valve connector (104), a compression nut (105), a launching pipe (106) and a navigation body (107), wherein an air pump used for filling compressed air into the high-pressure gas cylinder (101) is arranged at the left end of the high-pressure gas cylinder (101), a valve and a pressure gauge are arranged between the air pump and the high-pressure gas cylinder (101), a flange is arranged at the right end of the high-pressure gas cylinder (101), flanges are arranged at the left end and the right end of the normally closed solenoid valve (103), the left end of the necking pipe (102) is fixedly connected with the flange at the right end of the high-pressure gas cylinder (101) through a stud and a nut, the other end of the necking pipe is fixedly connected with the flange at the left end of the normally closed solenoid valve (103) through a stud and a nut, the launching tube (106) is a hollow tube, an external thread is arranged on the outer cylindrical surface of the left end of the launching tube, the tube valve connector (104) is of a hollow revolving body structure, an internal thread is arranged in the hollow part and is fixedly connected with the hollow part through a thread, and the compression nut (105) is sleeved outside the launching tube (106) and is in threaded connection with the launching tube.
3. The experimental device for underwater launching of a navigation body for research of the supercavitation mechanism as claimed in claim 2, wherein: the valve is used for connecting and disconnecting the air pump and the high-pressure gas cylinder (101), the pressure gauge is used for displaying the air pressure in the high-pressure gas cylinder (101), and the compression nut (105) abuts against the right end face of the pipe valve connector (104).
4. The experimental device for underwater launching of a navigation body for research of the supercavitation mechanism as claimed in claim 1, is characterized in that: the high-pressure gas cylinder transmission device is characterized in that the first pipe clamp combination (201) comprises a pair of first pipe clamps, the first pipe clamps comprise a first upper pipe clamp and a first lower pipe clamp, the first upper pipe clamp and the first lower pipe clamp are installed together through screws, the first pipe clamp combination (201) is used for clamping a high-pressure gas cylinder (101), the second pipe clamp combination (206) comprises a pair of second pipe clamps, the second pipe clamps comprise a second upper pipe clamp and a second lower pipe clamp, the second upper pipe clamp and the second lower pipe clamp are installed together through screws, the second pipe clamp combination (206) is used for clamping a transmitting pipe (106), the second lower connecting plate (204.2) is fixedly connected with a transmitting system support (208) through a supporting rod (209), and a universal wheel with a braking function and used for moving the transmitting system support (2) is installed at the lower end of the transmitting system support (208).
5. The experimental device for underwater launching of a navigation body for research of the supercavitation mechanism as claimed in claim 1, is characterized in that: the water tank (3) comprises a left baffle (301), a water tank base (302), a water tank frame (303), a front baffle, a rear baffle (304), an acrylic pressing strip (305), an acrylic plate (306), an electric knife gate valve (307), a tinfoil pressing plate (308), a scale (309), a hose connector (310), a ball valve (311), a right baffle (312) and a bottom plate (313), wherein the water tank base (302) is formed by welding hollow section steel, universal wheels with a braking function for moving the water tank (3) are installed at the bottom of the water tank base, the water tank frame (303) is welded on the water tank base (302) and has a cuboid frame structure, the left baffle (301), the front baffle (304), the rear baffle (304), the right baffle (312) and the bottom plate (313) are all made of 304 stainless steel and welded on the upper surface of the water tank frame (303), and the left baffle (301) forms a left side end face of the water, open on left baffle (301) has the through-hole, install in the through-hole department of left baffle (301) electronic knife gate valve (307), tinfoil clamp plate (308) are installed in electronic knife gate valve (307) outside, and are equipped with the tinfoil piece between tinfoil clamp plate (308) and electronic knife gate valve (307), preceding, backplate (304) constitute the front and back two sides of water tank (3), and preceding, backplate (304) are gone up to open has the rectangle window, and the window has arranged yakeli layering (305) all around, yakeli layering (305) are fixed yakeli board (306) in the front, on backplate (304), scale (309) have been pasted to one side of yakeli board (306), the vertical height and the launching tube (106) highly uniform of scale (309), the yakeli board (306) and preceding, between backplate (304) pad has the rubber gasket, and the rubber gasket both sides adopt sealed glue to seal, the right baffle (312) forms the right end face of the water tank (3), a drain hole is formed in the right baffle (312), the left end of the ball valve (311) is connected with the drain hole of the right baffle (312), the right end of the ball valve is connected with the hose connector (310), the bottom plate (313) forms the bottom face of the water tank (3), the bottom face and the horizontal face form an angle of 1.2 degrees, and drainage is facilitated.
6. The experimental device for underwater launching of a navigation body for research of the supercavitation mechanism as claimed in claim 1, is characterized in that: the observation and recording system (4) comprises a high-speed camera (401), a camera support (402), an auxiliary light source (403) and a notebook computer (404), wherein the high-speed camera (401) is installed on the camera support (402), the camera support (402) is located on one side, provided with an acrylic plate (306), of the water tank (3), the vertical height of the high-speed camera (401) is consistent with the height of the transmitting tube (106), and the high-speed camera (401) is connected with the notebook computer (404) through a data line.
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| CN201910419017.3A CN110132536B (en) | 2019-05-20 | 2019-05-20 | Navigation body underwater launching experimental device for research of supercavitation mechanism |
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| CN201910419017.3A CN110132536B (en) | 2019-05-20 | 2019-05-20 | Navigation body underwater launching experimental device for research of supercavitation mechanism |
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| CN112444169B (en) * | 2019-09-01 | 2022-05-24 | 南京理工大学 | Projectile flume with muffled launch section |
| CN110853478A (en) * | 2019-10-29 | 2020-02-28 | 西北工业大学 | Variable-angle high-speed transmitting device |
| CN111397842B (en) * | 2020-03-30 | 2022-10-11 | 中国科学院力学研究所 | Mobile launching underwater experimental device |
| CN113819396B (en) * | 2020-06-18 | 2023-07-18 | 北京机械设备研究所 | Electromagnetic switch gas integrated valve suitable for underwater projectile |
| CN113819395B (en) * | 2020-06-18 | 2023-06-20 | 北京机械设备研究所 | Motor-driven gas integration valve suitable for underwater projectile |
| CN113819814B (en) * | 2020-06-18 | 2023-06-20 | 北京机械设备研究所 | Electromagnetic switch gas control method suitable for underwater projectile |
| CN113819815B (en) * | 2020-06-18 | 2023-06-09 | 北京机械设备研究所 | Motor-driven gas control method suitable for underwater projectile |
| CN114275189B (en) * | 2021-12-29 | 2023-06-20 | 绵阳小巨人动力设备有限公司 | Fixing and recovering device for underwater emission simulation of navigation device |
| CN114353605A (en) * | 2022-01-13 | 2022-04-15 | 东北大学 | Supercavitation bullet testing arrangement |
| CN115493807A (en) * | 2022-10-13 | 2022-12-20 | 哈尔滨工程大学 | Experimental device and experimental method for underwater launching mechanism of high-speed navigation body |
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