CN115435641A

CN115435641A - Launching tube opening sealing device for underwater gun and mounting method thereof

Info

Publication number: CN115435641A
Application number: CN202211070496.0A
Authority: CN
Inventors: 归明月; 张雨桐
Original assignee: Nanjing University of Science and Technology
Current assignee: Nanjing University of Science and Technology
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2022-12-06
Anticipated expiration: 2042-09-02
Also published as: CN115435641B

Abstract

The invention discloses a sealing device for a launching tube opening of an underwater gun and an installation method thereof, and relates to the technical field of launching of underwater guns. The invention can reduce the launching resistance, simultaneously avoid the sealing failure of the barrel mouth before the projectile is launched, and ensure the normal operation of the underwater launching experiment.

Description

Launching tube opening sealing device for underwater gun and mounting method thereof

Technical Field

The invention relates to the technical field of underwater gun launching, in particular to a launching barrel opening sealing device for an underwater gun and an installation method thereof.

Background

With the continuous development of marine equipment technology, underwater firearms gradually become popular research objects of various national scholars. Different from the launching in the air, the underwater launching resistance is larger, a cavitation multiphase flow field formed in the projectile launching process is also more complicated, and because the shock wave intensity before the projectile is higher and the gunpowder gas shock wave is also enhanced by certain compression, the gun structure and the carrying tool are possibly damaged, and even the life safety of operators is threatened. Therefore, in combination with the special underwater environment, it is necessary to research the underwater gun launching device.

The launching of underwater firearms is largely divided into totally submerged launching and closed launching. Under the condition of full-submerged launching, the gun barrel is completely immersed in water, the launching barrel is also filled with water, and the projectile launching resistance is large; under the condition of closed emission, the emission barrel is filled with air, so that the emission resistance is relatively small, but the water of an external flow field is prevented from entering by a sealing membrane group arranged at the opening of the emission barrel. When a closed underwater launching experiment is carried out, a projectile accelerates in a launching tube, breaks a sealing membrane at a tube opening and then enters an external flow field, the phenomenon of backflow caused by tube opening sealing failure is very easy to happen in the process, a barrel is corroded, and the normal underwater launching is seriously influenced.

Disclosure of Invention

The invention aims to provide a sealing device for a launching barrel opening of an underwater gun and an installation method thereof, which are used for solving the problems in the prior art, reducing the launching resistance, avoiding the sealing failure of the barrel opening before the projectile is launched and ensuring the normal operation of an underwater launching experiment.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a launching tube opening sealing device for an underwater gun, which comprises a sealing tube, a tube cover, a sealing diaphragm, a pressure sensor, a controller and an opening and closing mechanism, wherein one end of the sealing tube is detachably connected with the launching tube of the underwater gun, the other end of the sealing tube is rotatably connected with one end of the tube cover and can be sealed through the tube cover, the sealing diaphragm is used for being installed at the launching tube opening and plugging the launching tube opening, the pressure sensor and the opening and closing mechanism are electrically connected with the controller, the pressure sensor is used for detecting the internal pressure of the launching tube and transmitting the detected pressure value to the controller, the controller is used for controlling the opening and closing mechanism to act, and the opening and closing mechanism drives the tube cover to rotate to open or plug one end of the sealing tube.

Preferably, openings are formed in two ends of the sealing cylinder, one end face of the sealing cylinder is used for being connected with the middle annular bulge of the launching cylinder through an external bolt, and the other end of the sealing cylinder is used for being connected with the cylinder cover.

Preferably, an outer sealing ring is arranged at the opening and used for being in contact with the outer wall of the launching tube, and the outer sealing ring is used for sealing the space between the inner wall of the opening and the outer wall of the launching tube.

Preferably, the opening for contacting the cartridge cover is provided with a sealing gasket for sealing between an inner wall of the opening and an outer wall of the cartridge cover.

Preferably, an annular wall is further fixed on the end face of the sealing cylinder for mounting the cylinder cover, the annular wall extends to a position close to the launching cylinder, and the sealing membrane is mounted between the annular wall and the launching cylinder opening.

Preferably, still include the sealing plug, the outer fringe of sealing plug and the terminal surface of launching tube mouth pass through interior bolted connection, the intercommunication mouth has been seted up at the middle part of sealing plug, just the one end of sealing plug seted up with the coaxial ring channel of intercommunication mouth, install the other end of sealing plug pressure sensor to in stretching into the launching tube, just sealed through a plurality of inner seal circle between the outer wall of sealing plug and the inner wall of launching tube, sealed diaphragm cover in intercommunication mouth department, and pass through the annular wall will the outer fringe of sealed diaphragm compress tightly in the ring channel, realize the fixed of sealed diaphragm.

Preferably, a plurality of through holes are formed in the annular wall, and the through holes can penetrate through the annular wall.

Preferably, the cylinder cover is rotatably connected with the sealing cylinder through a rotating shaft, the opening and closing mechanism is a motor, and an output shaft of the motor is connected with the rotating shaft and can control the rotating shaft to rotate so as to open or close the cylinder cover.

Preferably, an air pump is further arranged in the sealing cylinder and electrically connected with the controller.

The invention also discloses an installation method of the sealing device for the launching tube opening of the underwater gun based on any one of the technical schemes, which comprises the following steps:

s1, mounting a pressure sensor at one end of a sealing plug extending into a launching tube, and mounting the sealing plug on the launching tube through an inner bolt;

s2, installing an air pump on the inner wall of the sealing cylinder, installing a cylinder cover at an opening at one end of the sealing cylinder through a rotating shaft, and connecting the rotating shaft with an output shaft of a motor;

s3, installing a sealing diaphragm at the annular groove, aligning the annular wall with the annular groove, pressing and fixing the sealing diaphragm, and connecting the sealing cylinder and the launching cylinder by using an external bolt.

Compared with the prior art, the invention has the following technical effects:

the invention provides a sealing device for a launching tube opening of an underwater gun and an installation method thereof, wherein one end of a sealing tube is detachably connected with the launching tube of the underwater gun, the other end of the sealing tube is rotatably connected with one end of a tube cover and can be sealed by the tube cover, a sealing membrane is arranged at the launching tube opening and can be sealed for reducing launching resistance, meanwhile, the sealing membrane is protected by the tube cover to prevent the sealing membrane from being damaged before launching due to overlarge underwater pressure and influence on normal launching, a pressure sensor and an opening and closing mechanism are electrically connected with a controller, the pressure sensor is used for detecting the internal pressure of the launching tube and transmitting the detected pressure value to the controller, the opening and closing mechanism is controlled by the controller to act, and the opening and closing mechanism drives the tube cover to rotate to open or seal one end of the sealing tube, so that rapid conduction and sealing of an underwater trajectory are realized, the projectile can smoothly puncture the sealing membrane and enter an external flow field, and meanwhile, after the launching process is finished, the opening and closing mechanism is controlled by the controller to drive the tube cover to close, so as to avoid water intrusion in the external flow field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments 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 it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural view of a sealing device for a launch opening of an underwater firearm according to a first embodiment;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic structural view of a cover of the first embodiment;

FIG. 4 is a schematic structural diagram of a launch canister port in the first embodiment;

FIG. 5 is a cross-sectional view of the sealing plug of the first embodiment;

FIG. 6 is a cross-sectional view of a seal cartridge according to one embodiment;

in the figure: 100-a launching tube opening sealing device for an underwater gun, 1-a launching tube, 2-an outer sealing ring, 3-an outer bolt, 4-an air pump, 5-a sealing tube, 6-a pressure sensor, 7-an inner sealing ring, 8-a through hole, 9-a sealing gasket, 10-a tube cover, 11-a sealing membrane, 12-a rotating shaft, 13-an inner bolt, 14-a sealing plug, 15-an annular wall and 16-an annular groove.

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 invention aims to provide a sealing device for a launching barrel opening of an underwater gun and an installation method thereof, and aims to solve the technical problems that the existing underwater gun has large launching resistance, the barrel opening sealing before the projectile is launched is easy to lose efficacy, and the normal operation of an underwater launching experiment is influenced.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

Example one

As shown in fig. 1-6, the present embodiment provides a sealing device 100 for a launch canister opening of an underwater firearm, including a sealing canister 5, a canister cover 10, a sealing diaphragm 11, a pressure sensor 6, a controller and an opening and closing mechanism, where one end of the sealing canister 5 is detachably connected to a launch canister 1 of the underwater firearm, the other end of the sealing canister 5 is rotatably connected to one end of the canister cover 10 and can be sealed by the canister cover 10, the sealing diaphragm 11 is installed at the launch canister opening and is used for plugging the launch canister opening to reduce launch resistance, and at the same time, the sealing diaphragm 11 is protected by the canister cover 10 to prevent the sealing diaphragm 11 from being damaged before launching due to excessive underwater pressure and affecting normal launching, the pressure sensor 6 and the opening and closing mechanism are electrically connected to the controller, the pressure sensor 6 is used for detecting internal pressure of the launch canister 1 and transmitting the detected pressure value to the controller, when the pressure reaches a set value, the opening and closing mechanism controls the opening and closing mechanism to drive the canister cover 10 to rotate to open or plug one end of the sealing canister 5, thereby realizing smooth conduction and smooth breakdown of a trajectory and preventing an underwater projectile from entering into the outside of the sealed canister, and preventing the projectile from entering a flow field after the water entering the sealed canister opening and closing mechanism.

Specifically, the opening has all been seted up at the both ends of sealed section of thick bamboo 5, and then be convenient for the projectile to get into in the sealed section of thick bamboo 5 and launch smoothly, and a terminal surface of sealed section of thick bamboo 5 is used for protruding through outer bolt 3 being connected with the middle part annular of launch canister 1, and the other end of sealed section of thick bamboo 5 is used for connecting cover 10, is convenient for realize the shutoff and the opening of launch canister mouth department.

An opening part used for contacting with the outer wall of the launching tube 1 is provided with an outer sealing ring 2, and the outer sealing ring 2 is used for sealing between the inner wall of the opening and the outer wall of the launching tube 1 to ensure the sealing performance of the joint.

The sealing gasket 9 is arranged at the opening part which is used for contacting with the cylinder cover 10, the sealing gasket 9 is used for sealing between the inner wall of the opening and the outer wall of the cylinder cover 10, the cylinder cover 10 is ensured to be blocked at the opening part through the elasticity of the sealing gasket 9 and the friction force between the sealing gasket 9 and the cylinder cover 10, and meanwhile, the sealing performance is improved.

An annular wall 15 is further fixed on the end face, used for mounting the barrel cover 10, of the sealing barrel 5, the annular wall 15 extends towards the position close to the launching barrel 1, the annular wall 15 is coaxial with the opening, the sealing diaphragm 11 is mounted between the annular wall 15 and the opening of the launching barrel, and the opening of the launching barrel is sealed through the sealing diaphragm 11 before launching.

The launching tube opening sealing device 100 for the underwater firearm provided by the embodiment further comprises a sealing plug 14, the outer edge of the sealing plug 14 is connected with the end face of the launching tube opening through an inner bolt 13, a communication opening is formed in the middle of the sealing plug 14 and can be used for a projectile to pass through, an annular groove 16 coaxial with the communication opening is formed in one end of the sealing plug 14, the annular groove 16 is arranged towards the tube cover 10, a pressure sensor 6 is installed on the end face of the other end of the sealing plug 14 and used for stretching into the launching tube 1, the pressure sensor 6 is further located in the launching tube 1 and can detect the actual pressure in the launching tube 1, the outer wall of the sealing plug 14 is sealed with the inner wall of the launching tube 1 through a plurality of inner sealing rings 7, connection tightness and good sealing performance are guaranteed, the sealing membrane 11 covers the communication opening, the outer edge of the sealing membrane 11 is tightly pressed in the annular groove 16 through the annular wall 15, fixing of the sealing membrane 11 is achieved, the annular wall 15 can be tightly connected with the inner wall of the annular groove 16 after being embedded into the annular groove 16, and the stability of the fixing of the sealing membrane 11 is guaranteed.

Seted up a plurality of through-hole 8 on the annular wall 15, through-hole 8 can run through annular wall 15, still be equipped with air pump 4 in the sealed section of thick bamboo 5, air pump 4 is connected with the controller electricity, after the emission process, can control the work of air pump 4 through the controller, in order to change the pressure in the sealed section of thick bamboo 5, make the water that flows into in the launch section of thick bamboo 1 in the emission process through the air vent drainage sealed section of thick bamboo 5, thereby the unable invasion launch section of thick bamboo 1 depths of water of having guaranteed the outside flow field, avoid causing the damage of rifle under water.

The cylinder cover 10 is rotatably connected with the sealing cylinder 5 through a rotating shaft 12, the opening and closing mechanism is a motor, an output shaft of the motor is connected with the rotating shaft 12, and the rotating shaft 12 can be controlled to rotate so as to open or close the cylinder cover 10.

Example two

The embodiment provides an installation method of the launcher sealing device 100 for the underwater firearm according to the first embodiment, which comprises the following steps:

s1, mounting a pressure sensor 6 on one end, extending into the launching tube 1, of a sealing plug 14, and mounting the sealing plug 14 on the launching tube 1 through an inner bolt 13;

s2, installing the air pump 4 on the inner wall of the sealing cylinder 5, installing the cylinder cover 10 at an opening at one end of the sealing cylinder 5 through the rotating shaft 12, and connecting the rotating shaft 12 with an output shaft of the motor;

s3, the sealing diaphragm 11 is arranged at the annular groove 16, the annular wall 15 is aligned with the annular groove 16, the sealing diaphragm 11 is pressed and fixed, and the sealing cylinder 5 and the launching cylinder 1 are connected through the outer bolt 3.

EXAMPLE III

The present embodiment provides a method for using a sealing device 100 for a firing barrel opening of an underwater firearm, comprising the following steps:

firstly, closing the cylinder cover 10, opening the pressure sensors 6, and receiving the pressure of each pressure sensor 6 (the pressure sensors 6 are sensor patches) in real time through a controller to calculate the average pressure in the injection cylinder 1;

step two, when an underwater launching experiment is carried out, when the pressure sensor 6 monitors that the pressure in the launching tube 1 exceeds a set value, the controller controls the opening and closing mechanism to act and drives the tube cover 10 to be quickly opened, and the projectile penetrates through the sealing membrane 11 and then enters an external flow field;

and step three, after the experiment is finished, the controller controls the opening and closing mechanism to act, the barrel cover 10 is driven to close, the air pump 4 is controlled to start working, so that water in the launching barrel 1 is sucked into the sealing barrel 5 through pressure difference, and water is prevented from flowing backwards to enter the deep part of the launching barrel 1 to damage the underwater gun.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above description of the embodiments is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In summary, this summary should not be construed to limit the present invention.

Claims

1. A launching tube mouth sealing device for an underwater gun is characterized in that: including sealed section of thick bamboo, cover, sealed diaphragm, pressure sensor, controller and the mechanism that opens and shuts, the one end of sealed section of thick bamboo is used for can dismantling with the launching tube of rifle under water and is connected, the other end of sealed section of thick bamboo with the one end of cover is rotated and is connected and can pass through the cover seals, sealed diaphragm is used for installing in launching tube mouth department to the shutoff of launching tube mouth department, pressure sensor with the mechanism that opens and shuts all with the controller electricity is connected, just pressure sensor is used for detecting the internal pressure of launching tube, and with the pressure value transmission that detects extremely the controller, through the controller control the mechanism action that opens and shuts, and make the mechanism that opens and shuts drives the cover rotates to opening or the shutoff the one end of sealed section of thick bamboo.

2. The launcher opening sealing device for underwater firearms according to claim 1, wherein: openings are formed in the two ends of the sealing barrel, one end face of the sealing barrel is used for being connected with the middle annular bulge of the launching barrel through an outer bolt, and the other end of the sealing barrel is used for being connected with the barrel cover.

3. The sealing device for the mouth of a launch barrel for an underwater firearm of claim 2, wherein: and the opening part for contacting with the outer wall of the launching tube is provided with an outer sealing ring, and the outer sealing ring is used for sealing between the inner wall of the opening and the outer wall of the launching tube.

4. The sealing device for the mouth of a launch barrel for an underwater firearm of claim 2, wherein: the opening used for contacting the cylinder cover is provided with a sealing gasket, and the sealing gasket is used for sealing the space between the inner wall of the opening and the outer wall of the cylinder cover.

5. The launcher opening sealing device for underwater firearms according to claim 1, wherein: the end face, used for installing the cylinder cover, of the sealing cylinder is further fixedly provided with an annular wall, the annular wall extends towards the position close to the launching cylinder, and the sealing membrane is installed between the annular wall and the opening of the launching cylinder.

6. The launcher opening sealing device for underwater firearms according to claim 5, wherein: still include the sealing plug, the outer fringe of sealing plug and the terminal surface of transmission nozzle are through interior bolted connection, the intercommunication mouth has been seted up at the middle part of sealing plug, just the one end of sealing plug seted up with the coaxial ring channel of intercommunication mouth, install the other end of sealing plug pressure sensor for stretch into in the transmission nozzle, just sealed through a plurality of inner seal circle between the outer wall of sealing plug and the inner wall of transmission nozzle, sealed diaphragm cover in intercommunication mouth department, and pass through the annular wall will the outer fringe of sealed diaphragm compress tightly in the ring channel, realize sealed diaphragm's is fixed.

7. The sealing device for the mouth of a launch barrel of an underwater firearm of claim 5, wherein: a plurality of through holes are formed in the annular wall and can penetrate through the annular wall.

8. The sealing device for the mouth of a launch barrel for an underwater firearm of claim 1, wherein: the cylinder cover is rotationally connected with the sealing cylinder through a rotating shaft, the opening and closing mechanism is a motor, an output shaft of the motor is connected with the rotating shaft and can control the rotating shaft to rotate so as to open or close the cylinder cover.

9. The sealing device for the mouth of a launch barrel for an underwater firearm of claim 1, wherein: an air pump is further arranged in the sealing cylinder and electrically connected with the controller.

10. A method of installing a sealing device for the mouth of a launch barrel of an underwater firearm, according to any of claims 1 to 9, characterized in that: the method comprises the following steps:

s2, mounting the air pump on the inner wall of the sealing cylinder, mounting a cylinder cover at an opening at one end of the sealing cylinder through a rotating shaft, and connecting the rotating shaft with an output shaft of the motor;