阅读说明：本技术 一种适用于水下射弹的电机推动式气体控制方法 (Motor-driven gas control method suitable for underwater projectile ) 是由 黄磊 段磊 张孝石 彭雪明 何春涛 于 2020-06-18 设计创作，主要内容包括：本发明涉及一种适用于水下射弹的电机推动式气体控制方法,属于水下射弹技术领域,解决现有水下射弹的气源难以集成在弹体内的问题。气体控制方法包括：对气瓶进行充气,直至气瓶充满气体,关闭气瓶的充气阀；启动发射设备上的电机,推动气瓶移动,使活塞与发射设备之间的限位结构解除限位,使开关阀打开,气瓶内的气体依次通过开关阀和减压阀被排出；继续移动气瓶,直至通过限位结构与活塞脱离,并与发射设备的相对位置固定,保持开关阀处于开启状态,并保持气体持续排出。本发明采用外置电机时序控制,打开开关阀,小型化集成充气阀、气瓶、开关阀及减压阀,以实现射弹系统气体触发通气时刻及气体通气流量可控的目标。(The invention relates to a motor-driven gas control method suitable for an underwater projectile, belongs to the technical field of underwater projectiles, and solves the problem that a gas source of the existing underwater projectile is difficult to integrate in a projectile body. The gas control method comprises the following steps: inflating the gas cylinder until the gas cylinder is filled with gas, and closing an inflation valve of the gas cylinder; starting a motor on the launching equipment, pushing the gas cylinder to move, enabling a limiting structure between the piston and the launching equipment to release limiting, enabling the switch valve to be opened, and discharging gas in the gas cylinder through the switch valve and the pressure reducing valve in sequence; and continuously moving the gas cylinder until the gas cylinder is separated from the piston through the limiting structure and is fixed relative to the launching equipment, keeping the switch valve in an open state and keeping the gas continuously discharged. The invention adopts external motor time sequence control to open the switch valve, and integrates the inflation valve, the gas cylinder, the switch valve and the pressure reducing valve in a miniaturized way, so as to realize the aim that the gas triggering and ventilation time and the gas ventilation flow of the projectile system can be controlled.)

1. A method of motor-propelled gas control for an underwater projectile, the method comprising:

s1, inflating the gas cylinder until the gas cylinder is full of gas, and closing an inflation valve of the gas cylinder;

s2, starting a motor on the launching equipment, pushing the gas cylinder to move, enabling a limiting structure between the piston and the launching equipment to release limiting, enabling the switch valve to be opened, and discharging gas in the gas cylinder through the switch valve and the pressure reducing valve in sequence;

and S3, continuing to move the gas cylinder until the gas cylinder is separated from the piston through the limiting structure and is fixed relative to the launching equipment, keeping the switch valve in an open state, and keeping the gas continuously discharged.

2. The motor-propelled gas control method for underwater projectiles of claim 1 wherein said motor-propelled gas integration valve for underwater projectiles comprises: the device comprises a switch valve (4), an inflation valve (2), a pressure reducing valve (5), a gas cylinder (3) and a motor (1);

the gas bottle (3) is a revolving body, the inflation valve (2) is arranged at one end of the gas bottle (3), and the switch valve (4) is arranged at the other end of the gas bottle (3); the pressure reducing valve (5) is arranged at the air outlet end of the switch valve (4); the switch valve (4) is provided with a piston (7) which is arranged along the radial direction of the gas cylinder (3), and the piston (7) controls the switch valve (4) to be opened or closed; the motor (1) can push the inflation valve (2), the gas cylinder (3), the switch valve (4) and the reducing valve (5) to move together relative to the launching device (6), and meanwhile, the limiting relation between the limiting structure on the launching device (6) and the piston (7) is released, so that the piston (7) moves.

3. The motor-propelled gas control method for underwater projectiles as claimed in claim 2 wherein said on-off valve (4) is provided with a gas flow path communicating the inside of the gas cylinder (3) and the pressure reducing valve (5); the gas flow path is provided with a radial section (409);

the piston (7) is a rotary body and is provided with a first diameter-changing part (405), and the first diameter-changing part (405) can be inserted into and blocks a radial section (409);

the switch valve (4) is further provided with a reset structure, and the reset structure can enable the first diameter-changing portion (405) to be in a state of being separated from the radial section (409).

4. The motor-propelled gas control method for underwater projectiles as claimed in claim 3, wherein said on-off valve (4) is provided with a bushing (404) and a bushing (404) mounting hole, said bushing (404) being fully inserted into the bushing (404) mounting hole in the radial direction of the gas cylinder (3), said radial segment (409) being provided at the bottom of the bushing (404) mounting hole;

the air flow passage is also provided with an air outlet section (410), and the air outlet section (410) penetrates through the side wall of the mounting hole of the bushing (404) and is communicated with the radial section (409);

the piston (7) is provided with a second variable-diameter part (406), the second variable-diameter part (406) is installed in the lining (404), and the second variable-diameter part (406) can move in the lining (404) along the radial direction of the gas cylinder (3).

5. The motor-propelled gas control method for underwater projectiles of claim 4 wherein the return structure is a spring (407) in compression, one end of the spring (407) bearing against a side wall edge of the radial segment (409) and the other end bearing against the second diameter-reduction (406).

6. The motor-propelled gas control method for underwater projectiles of claim 5 wherein said stop structure comprises: a first ball (402), a second ball (403) and an annular groove (601).

7. The motor-propelled gas control method for underwater projectiles of claim 6 wherein the first diameter-varying portion (405) is provided with a first sealing ring capable of sealing between the first diameter-varying portion (405) and the radial portion;

the second diameter-changing portion (406) is provided with a second sealing ring, and the second sealing ring can seal between the second diameter-changing portion (406) and the bushing (404).

8. The motor-propelled gas control method for underwater projectiles of claim 7 wherein in step S1:

the gas cylinder is inflated after the inflation connector is connected with the inflation pipeline, the inflation is stopped after the pressure in the gas cylinder reaches the set pressure, and the gas pressure in the inflation pipeline is removed.

9. The motor-propelled gas control method for underwater projectiles of claim 7 wherein in step S2:

the motor circular telegram promotes gas charging valve, gas cylinder, ooff valve and relief pressure valve together and moves relatively firing equipment, moves to ring channel department along with the ooff valve until the second ball, and the second ball is relieved spacingly, and the spring promotes piston, piston and passes through first ball and promote the second ball for the second ball gets into the ring channel, thereby the first variable-diameter portion and the radial portion of piston break away from, realizes opening of ooff valve.

10. The motor-propelled gas control method for underwater projectiles of claim 7 wherein in step S3:

the inflation valve, the gas cylinder, the switch valve and the pressure reducing valve move together continuously relative to the launching equipment, the second ball is reserved in the annular groove, and the first ball keeps stable through the limiting effect of the bushing, the piston and the spring, the first variable-diameter part is separated from the radial section, and the switch valve is kept in an open state.

Technical Field

The invention relates to the technical field of underwater projectiles, in particular to a motor-driven gas control method suitable for underwater projectiles.

Background

The underwater projectile obtains high initial speed by utilizing a gun shooting technology, adopts a gas wrapping technology to reduce resistance, and then realizes underwater high-speed navigation so as to strike and intercept an underwater movement device. Therefore, the underwater projectile needs to be provided with a gas source and a gas control device. However, due to the small diameter of underwater projectiles, typically less than 35mm, it is difficult to arrange the gas supply and gas control means inside the projectile.

The projectile launching mode generally adopts an adapter constrained launching mode, namely the adapter and the projectile limit the axial position through a positioning pin, and simultaneously, the gap between the outer surface of the projectile and the inner surface of a barrel is compensated, so that the functions of guiding, limiting and reducing friction resistance in the projectile launching process are achieved, and the adapter automatically separates under the action of fluid resistance after the projectile exits the barrel.

For an underwater projectile system, a certain time is needed for gas to enter and reach stable flow, and the gas flow has great influence on the resistance reduction characteristic of a projectile body, so that a gas source and a gas control device in the projectile can control the gas triggering and ventilation time and the gas ventilation flow, and no device can meet the technical requirements at present.

The existing method of using an external electromagnetic valve to control and open a switch valve in a time sequence mode realizes the target that the gas of a projectile system triggers the ventilation time and the gas ventilation flow is controllable. The method has the problem of size limitation, namely when the limited size is smaller, the effective area of the electromagnet is smaller, the generated suction force is smaller, and the risk that the switch valve cannot be opened exists.

Disclosure of Invention

In view of the above analysis, the present invention aims to provide a motor-driven gas control method for underwater projectiles, which is used to solve the problem that the gas source and gas control device of the existing underwater projectiles are difficult to integrate into the projectile body on the premise of small size.

The purpose of the invention is mainly realized by the following technical scheme:

in the technical scheme of the invention, the motor-driven gas control method suitable for the underwater projectile comprises the following steps:

s1, inflating the gas cylinder until the gas cylinder is full of gas, and closing an inflation valve of the gas cylinder;

s2, starting a motor on the launching equipment, pushing the gas cylinder to move, enabling a limiting structure between the piston and the launching equipment to release limiting, enabling the switch valve to be opened, and discharging gas in the gas cylinder through the switch valve and the pressure reducing valve in sequence;

and S3, continuing to move the gas cylinder until the gas cylinder is separated from the piston through the limiting structure and is fixed relative to the launching equipment, keeping the switch valve in an open state, and keeping the gas continuously discharged.

In the technical scheme of the invention, the motor-driven gas integrated valve suitable for the underwater projectile comprises: the device comprises a switch valve, an inflation valve, a pressure reducing valve, a gas cylinder and a motor;

the gas cylinder is a revolving body, the charging valve is arranged at one end of the gas cylinder, and the switch valve is arranged at the other end of the gas cylinder; the pressure reducing valve is arranged at the air outlet end of the switch valve; the switch valve is provided with a piston arranged along the radial direction of the gas cylinder, and the piston controls the switch valve to be opened or closed; the motor can push the inflation valve, the gas cylinder, the switch valve and the pressure reducing valve to move together relative to the launching equipment, and meanwhile, the limiting relation between the limiting structure on the launching equipment and the piston is released, so that the piston moves.

In the technical scheme of the invention, the switch valve is provided with an airflow passage which is communicated with the interior of the gas cylinder and the pressure reducing valve; the airflow passage is provided with a radial section;

the piston is a revolving body and is provided with a first diameter-changing part, and the first diameter-changing part can be inserted into and block the radial section;

the switch valve is also provided with a reset structure, and the reset structure can enable the first reducing part to be in a state of being separated from the radial section.

According to the technical scheme, the switch valve is provided with a lining and a lining mounting hole, the lining is completely inserted into the lining mounting hole along the radial direction of the gas cylinder, and the radial section is arranged at the bottom of the lining mounting hole;

the air flow passage is also provided with an air outlet section, and the air outlet section penetrates through the side wall of the bushing mounting hole and is communicated with the radial section;

the piston is provided with a second reducing part, the second reducing part is installed in the bushing, and the second reducing part can move in the bushing along the radial direction of the gas cylinder.

In the technical scheme of the invention, the reset structure is a spring in a compressed state, one end of the spring is abutted against the edge of the side wall of the radial section, and the other end of the spring is abutted against the second diameter-changing part.

In the technical scheme of the invention, the limiting structure comprises: a first ball, a second ball and an annular groove.

In the technical scheme of the invention, the first diameter-changing part is provided with a first sealing ring, and the first sealing ring can seal the first diameter-changing part and the radial part;

the second reducing portion is provided with a second sealing ring, and the second sealing ring can seal the second reducing portion and the bushing.

In the technical scheme of the invention, in the step S1:

the gas cylinder is inflated after the inflation connector is connected with the inflation pipeline, the inflation is stopped after the pressure in the gas cylinder reaches the set pressure, and the gas pressure in the inflation pipeline is removed.

In the technical scheme of the invention, in the step S2:

the motor circular telegram promotes gas charging valve, gas cylinder, ooff valve and relief pressure valve together and moves relatively firing equipment, moves to ring channel department along with the ooff valve until the second ball, and the second ball is relieved spacingly, and the spring promotes piston, piston and passes through first ball and promote the second ball for the second ball gets into the ring channel, thereby the first variable-diameter portion and the radial portion of piston break away from, realizes opening of ooff valve.

In the technical scheme of the invention, in the step S3:

the inflation valve, the gas cylinder, the switch valve and the pressure reducing valve move together continuously relative to the launching equipment, the second ball is reserved in the annular groove, and the first ball keeps stable through the limiting effect of the bushing, the piston and the spring, the first variable-diameter part is separated from the radial section, and the switch valve is kept in an open state.

The technical scheme of the invention can at least realize one of the following effects:

1. the invention adopts external motor time sequence control to open the switch valve, and integrates the inflation valve, the gas cylinder, the switch valve and the pressure reducing valve in a miniaturized way, so as to realize the aim that the gas triggering and ventilation time and the gas ventilation flow of the projectile system can be controlled.

2. The invention adopts the motor to control the integral movement, so that the second ball is not limited, and the piston opens the switch valve, so that the switch valve can be opened at the moment of projectile body launching, the gas in the gas cylinder can be discharged by the gas integration valve, and the gas resistance reduction of the projectile body is realized.

3. According to the invention, through the arrangement of the spring, the whole device can still keep gas output after being launched along with the projectile body, so that gas resistance reduction can still be carried out after the projectile body is launched.

In the invention, the technical schemes can be combined with each other to realize more preferable combination schemes. Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.

Drawings

The drawings are only for purposes of illustrating particular embodiments and are not to be construed as limiting the invention, wherein like reference numerals are used to designate like parts throughout.

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

FIG. 2 is a sectional view of a switching valve according to an embodiment of the present invention;

FIG. 3 is a cross-sectional view of an inflation valve in accordance with an embodiment of the present invention.

Reference numerals:

1-a motor; 2-an inflation valve; 201-inflation connection; 202-a one-way valve; 3-a gas cylinder; 4-a switch valve; 401-a base; 402-a first ball bearing; 403-a second ball; 404-a liner; 405-a first diameter-changing portion; 406-a second diameter-changing portion; 407-a spring; 408-an air intake section; 409-a radial segment; 410-an air outlet section; 5-a pressure reducing valve; 6-a transmitting device; 601-an annular groove; 7-a piston;

Detailed Description

The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form a part hereof, and which together with the embodiments of the invention serve to explain the principles of the invention and not to limit its scope.

In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the term "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, which may be a mechanical connection, an electrical connection, which may be a direct connection, or an indirect connection via an intermediate medium. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The terms "top," "bottom," "above … …," "below," and "on … …" as used throughout the description are relative positions with respect to components of the device, such as the relative positions of the top and bottom substrates inside the device. It will be appreciated that the devices are multifunctional, regardless of their orientation in space.

The invention provides a motor-driven small-sized gas integrated valve suitable for an underwater projectile, which is characterized in that a mode of driving an opening and closing valve 4 by a motor 1 is adopted, the purposes of controlling the gas triggering and ventilation time and the gas ventilation flow of a projectile system are achieved, and the problem of limited size of an electromagnetic switch is solved.

Specifically, as shown in fig. 1 to 3, a motor-driven gas integration valve for underwater projectiles includes: the device comprises a switch valve 4, an inflation valve 2, a pressure reducing valve 5, a gas cylinder 3 and a motor 1; the gas bottle 3 is a revolving body, the charging valve 2 is arranged at one end of the gas bottle 3, and the switch valve 4 is arranged at the other end of the gas bottle 3; the pressure reducing valve 5 is arranged at the air outlet end of the switch valve 4; the switch valve 4 is provided with a piston 7 arranged along the radial direction of the gas cylinder 3, and the piston 7 controls the switch valve 4 to be opened or closed; the motor 1 can push the inflation valve 2, the gas cylinder 3, the switch valve 4 and the pressure reducing valve 5 to move together relative to the launching device 6, and meanwhile, the limiting relation between the limiting structure on the launching device 6 and the piston 7 is released, so that the piston 7 moves. When the bullet projectile is launched, the motor 1 is started, the motor 1 pushes the inflation valve 2, the gas cylinder 3, the switching valve 4 and the pressure reducing valve 5 to move together relative to the launching equipment 6, meanwhile, the piston 7 also moves relative to the launching equipment 6 until the limit relation with a limit structure on the launching equipment 6 is removed, so that the piston 7 opens the switching valve 4, gas in the gas cylinder 3 flows to the pressure reducing valve 5 through the switching valve 4, and the gas in the pressure reducing valve 5 is adjusted to be proper pressure to form stable gas flow and be used for reducing resistance of the gas of the bullet.

In the embodiment of the invention, the motor 1 is arranged on the projectile launching device 6, the projectile launching device 6 is an adapter or a gun barrel for projectile launching, the existing product can be used, and the cable of the motor 1 is led out from the barrel wall or a barrel pipeline. The motor 1 is used for providing required acting force for the inflation valve 2, the gas bottle 3, the switch valve 4 and the pressure reducing valve 5 to move together relative to the launching device 6.

The pressure reducing valve 5 is also a mature product, and the air inlet end of the pressure reducing valve 5 is in threaded connection with the air outlet section 410 of the switch valve 4 and is sealed. The pressure reducing valve 5 is used for adjusting the gas outflow side pressure, so that the gas flow is adjusted, and the purpose of stable and controllable gas flow is achieved.

In order to cooperate with the control of the piston 7, in the embodiment of the invention, the switch valve 4 is provided with an air flow passage which is communicated with the interior of the air bottle 3 and the pressure reducing valve 5; the airflow passage comprises an air inlet section 408, a radial section 409 and an air outlet section 410 which are connected in sequence; the air inlet section 408 is in threaded connection with the air outlet section 410 of the gas cylinder 3 and is arranged in a sealing mode, and the air outlet section 410 is connected with the pressure reducing valve 5. The piston 7 is a rotary body, the axis of the piston 7 is arranged along the radial direction of the gas cylinder 3, the piston 7 is provided with a first variable diameter portion 405, the first variable diameter portion 405 can be inserted into and blocks the radial section 409, when the first variable diameter portion 405 is inserted into the radial section 409, the gas flow passage is blocked, the switch valve 4 is in a closed state, when the first variable diameter portion 405 is separated from the radial section 409, the gas flow passage is unblocked, and the switch valve 4 is in an open state.

The switch valve 4 is further provided with a reset structure, the reset structure can enable the first diameter-changing portion 405 to be in a state of being separated from the radial section 409, namely the switch valve 4 is closed when the piston 7 is limited, when the projectile body is launched, the motor 1 is started to enable the piston 7 and the limit structure to be separated, and under the action of the reset structure, the first diameter-changing portion 405 is separated from the radial section 409.

In the embodiment of the present invention, the switch valve 4 is provided with a bushing 404 and a bushing 404 mounting hole, the bushing 404 is completely inserted into the bushing 404 mounting hole along the radial direction of the gas cylinder 3, the radial section 409 is provided at the bottom of the bushing 404 mounting hole, the bushing 404 is used as a motion constraint structure, specifically, the piston 7 is provided with a second diameter-changing portion 406, the second diameter-changing portion 406 is mounted in the bushing 404, and the second diameter-changing portion 406 can move along the radial direction of the gas cylinder 3 in the bushing 404. In addition, to ensure an unobstructed airflow path, the air outlet segment 410 passes through the sidewall of the mounting hole of the liner 404 and communicates with the radial segment 409.

In order to simplify the whole device, in the embodiment of the present invention, the restoring structure is a spring 407 in a compressed state, one end of the spring 407 abuts against the sidewall edge of the radial section 409, and the other end abuts against the second diameter-changing portion 406, and when the piston 7 is not limited by the positioning structure, the spring 407 pushes the first diameter-changing portion 405 of the piston 7 away from the radial section 409.

Because the device of the invention is arranged in the projectile body, when the projectile body is separated from the launching device, and the motor 1 can not be launched along with the projectile body, the embodiment of the invention is provided with the limit structure to enable the switch valve 4 to be in an open state, and specifically, the locking structure comprises the limit structure which comprises: a first ball 402, a second ball 403 and an annular groove 601; the first ball 402 is fixed with one end of the piston 7 far away from the radial section 409; the outer side wall of the bush 404 contacting with the launching device 6 is provided with a ball hole, the second ball 403 is disposed in the ball hole and is retained by the first ball 402 and the inner side wall of the launching device 6, and the retained second ball 403 causes the first diameter-changing portion 405 to be inserted into the radial section 409. Before the projectile body is launched, the second ball 403 is pressed into the ball hole due to the restriction of the inner side wall of the launching device 6 on the second ball 403, the second ball 403 presses the first ball 402, the first ball 402 presses the first diameter-changing portion 405 of the piston 7 into the radial section 409 against the urging force of the spring 407, and the on-off valve 4 is in a closed state. The annular groove 601 is arranged on the inner side wall of the launching device 6 at a position in the advancing direction of the ball hole moving along with the switch valve 4; the second ball 403 can enter the annular groove 601 and release the restriction, disengaging the first diameter-varying portion 405 from the radial segment 409. When the motor 1 pushes the charging valve 2, the gas cylinder 3, the switch valve 4 and the pressure reducing valve 5 to move together relative to the launching device 6, the second ball 403 rolls between the first ball 402 and the inner side wall of the launching device 6 until the second ball 403 moves to the annular groove 601 along with the switch valve 4, the second ball 403 is relieved, the spring 407 pushes the piston 7, the piston 7 pushes the second ball 403 through the first ball 402, the second ball 403 enters the annular groove 601, the first diameter-changing part 405 of the piston 7 is separated from the radial part, the switch valve 4 is opened, the second ball 403 is left in the annular groove 601 along with the further movement of the switch valve 4, the first ball 402 keeps the piston 7 stable through the limiting effect of the bushing 404 and the piston 7 and the spring 407, and the first diameter-changing part 405 is separated from the radial section 409, at this time, even if the projectile body is separated from the launching device 6, the motor 1 does not push the charging valve 2, the gas cylinder 3, the switch valve 4 and the pressure reducing valve 5 to move together relative to the launching device 6, and the piston 7 is also pushed by the spring 407 to keep the first diameter-changing part 405 separated from the radial section 409, so that the gas flow passage is always in an unblocked state.

Since the piston 7 is a rotary body, in order to prevent the piston 7 from rotating, in the embodiment of the present invention, the bush 404 is provided with a slide groove along the radial direction of the gas cylinder 3, and the second diameter-reduced portion 406 of the piston 7 is provided with a sliding portion capable of sliding in the slide groove.

In view of the use of the apparatus of the present invention for launching underwater projectiles, it is desirable to prevent the ingress of liquids and, in addition, to prevent the escape of gases from other locations. In the embodiment of the present invention, the first diameter-varying portion 405 is provided with a first sealing ring, and the first sealing ring can seal between the first diameter-varying portion 405 and the radial section 409; the second diameter-variable portion 406 is provided with a second seal ring capable of sealing between the second diameter-variable portion 406 and the bushing 404.

In addition, the switch valve 4 is also provided with a base 401, the base 401 of the switch valve 4 is of a revolving body structure, one end of the base 401 is connected with the gas cylinder 3 in a sealing mode through threads, the other end of the base 401 is connected with the pressure reducing valve 5 in a sealing mode through threads, and the base 401 of the switch valve 4 is designed into a gas outlet pipeline. The bush 404 is fixed to the base 401 of the on-off valve 4 by a screw or an adhesive. The base 401, the piston 7 and the bush 404 of the on-off valve 4 are made of an aluminum alloy material, preferably a magnesium alloy material, to reduce the weight, and the spring 407 is made of a spring steel material.

In the embodiment of the invention, the inflation valve 2 is composed of an inflation connector 201 and a one-way valve 202, and the inflation connector 201 and the one-way valve 202 are made of aluminum alloy materials, preferably magnesium alloy materials, so as to reduce the weight. The charging connector 201 is connected with the one-way valve 202 in a sealing mode through threads, and one end of the charging connector 201 is connected with one end of the gas cylinder 3 in a sealing mode through threads. In the inflation process, the connector of the inflation valve 2 is connected with the inflation pipeline, the one-way valve 202 is used for realizing one-way flow of gas, when the pressure of the interface side of the inflation valve 2 is greater than the pressure of the gas cylinder 3, the one-way valve 202 is in an open state, and when the pressure of the interface side of the inflation valve 2 is less than the pressure of the gas cylinder 3, the one-way valve 202 is in a closed state.

It should be noted that the gas cylinder 3 is a revolving structure, and the size of the gas cylinder 3 can be adjusted according to the gas quality requirement. The gas cylinder 3 is made of stainless steel materials, and the preferred gas cylinder 3 is made of carbon fiber composite materials so as to reduce weight. One end of the gas cylinder 3 is hermetically connected with the charging valve 2 through threads, and the other end of the gas cylinder is hermetically connected with the switch valve 4 through threads. The gas bottle 3 is used for storing high-pressure gas, and the maximum pressure of the stored gas is 15 MPa.

In using embodiments of the present invention:

s1, firstly inflating the gas cylinder 3, starting to inflate the gas cylinder 3 after the connector of the inflation valve 2 is connected with the inflation pipeline, wherein the side pressure of the connector of the inflation valve 2 is larger than the side pressure of the gas cylinder 3 at the moment, the one-way valve 202 is in an open state, inflation is stopped after the pressure in the gas cylinder 3 reaches the set pressure, the gas pressure in the inflation pipeline is removed, the side pressure of the gas cylinder 3 is larger than the side pressure of the connector of the inflation valve 2 at the moment, and the one-way valve 202 is in a closed state. Further, due to the restriction of the inner side wall of the launching device 6, the second ball 403 is pressed into the ball hole, and the first diameter-changed portion 405 is pressed into the radial section 409 against the urging force of the spring 407, so that the on-off valve 4 is closed.

Before underwater launching, the motor 1 is not electrified in an initial state, and the spring 407 is in a compressed state; the piston 7 is inserted into the radial section 409 by the second ball 403, the first diameter-changing portion 405 is sealed between the radial section 409 and the first diameter-changing portion 405 by the first seal ring, the air flow path is sealed, and the on-off valve 4 is closed.

S2, when underwater launching is carried out, the motor 1 is electrified to push the inflation valve 2, the gas cylinder 3, the switch valve 4 and the pressure reducing valve 5 to move together relative to the launching equipment 6 until the second ball 403 moves to the annular groove 601 along with the switch valve 4, the second ball 403 is relieved from limiting, the spring 407 pushes the piston 7, the piston 7 pushes the second ball 403 through the first ball 402, the second ball 403 enters the annular groove 601, and the first diameter-changing part 405 of the piston 7 is separated from the radial part to open the switch valve 4.

S3, as the on-off valve 4 moves further, the second ball 403 remains in the annular groove 601, and the first ball 402 keeps the piston 7 stable by the limiting action of the bushing 404 and the piston 7 and the spring 407, and keeps the first diameter-changing portion 405 disengaged from the radial section 409, that is, the on-off valve 4 is kept in the open state.

When the switch valve 4 is opened, high-pressure gas in the gas cylinder 3 flows to the pressure reducing valve 5 through the gas flow passage, the pressure reducing valve 5 outputs the output gas pressure stably, in addition, the pressure reducing valve 5 also has adjusting capacity, the pressure of an output end can be controlled, the flow of output gas is adjusted, so that the gas can be stably output, the projectile body is launched and the process after the projectile body is launched is ensured, the effect of gas flow resistance reduction can be kept stable, and the projectile body advancing track is conveniently judged.

In conclusion, the embodiment of the invention provides a motor-driven gas control method suitable for an underwater projectile, which adopts an external motor 1 to perform time sequence control, opens a switch valve 4, and miniaturizes and integrates an inflation valve 2, a gas cylinder 3, the switch valve 4 and a pressure reducing valve 5 so as to realize the target that the gas triggering and ventilation time and the gas ventilation flow of a projectile system are controllable; the motor 1 is adopted to control the integral movement, so that the second ball 403 is relieved from limiting, the piston 7 is further used for opening the switch valve 4, the switch valve 4 can be opened at the moment of projectile body launching, the gas in the gas cylinder 3 can be discharged through the gas integration valve, and the gas resistance reduction of the projectile body is realized; according to the invention, through the arrangement of the spring 407, the whole device can still keep gas output after being launched along with the projectile body, so that gas resistance reduction can still be carried out after the projectile body is launched.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.