阅读说明：本技术 一种防发射管口高压气体干扰被发射物姿态装置 (Device for preventing high-pressure gas at emission pipe opening from interfering with emitted object posture ) 是由 邵志宇 曹苗苗 于 2021-01-14 设计创作，主要内容包括：本发明提出一种防止发射药燃烧产生的高压气体对飞离发射管后的被发射物姿态产生干扰的装置,属于发射技术领域。本发明的一种防发射管口高压气体干扰被发射物姿态装置包括闭气柱、挡气盘、密封圈、销座、止动销。当高压气体将闭气柱上安装有止动销的一端推离发射管口时,高压气体经由闭气柱中心盲孔和销座中心孔使止动销凸出于闭气柱外表面；当被发射物从挡气盘中心孔通过后,紧随其后的闭气柱则由于止动销被挡气盘阻挡而不能通过,闭气柱将挡气盘的中心孔堵塞,从发射管喷射出的高压气体被闭气柱和挡气盘挡住,不会对被发射物产生影响。由于发射管喷射出的高压气体瞬间作用在挡气盘上,其对发射设备产生的后坐力被作用在挡气盘上的冲击力抵消。(The invention provides a device for preventing high-pressure gas generated by propellant powder combustion from interfering with the posture of a propellant after flying away from a propellant tube, and belongs to the technical field of propellant. The invention relates to a posture device for preventing high-pressure gas at a transmitting pipe orifice from interfering with a transmitted object. When the high-pressure gas pushes one end of the gas-closing column, which is provided with the stop pin, away from the emission pipe orifice, the high-pressure gas enables the stop pin to protrude out of the outer surface of the gas-closing column through the central blind hole of the gas-closing column and the central hole of the pin seat; after the object to be launched passes through the central hole of the air blocking disc, the air blocking column next to the object to be launched cannot pass through the central hole due to the fact that the stop pin is blocked by the air blocking disc, the air blocking column blocks the central hole of the air blocking disc, and high-pressure air jetted out of the launching tube is blocked by the air blocking column and the air blocking disc, so that the object to be launched cannot be influenced. Because the high-pressure gas ejected by the launching tube acts on the air baffle disc instantly, the recoil force generated by the launching device is counteracted by the impact force acting on the air baffle disc.)

1. A posture device for preventing high-pressure gas at a transmitting pipe orifice from interfering with a transmitted object comprises a gas-blocking column (1), a gas-blocking disc (2), a sealing ring (3), a pin seat (4) and a stop pin (5); the gas-tight column (1) is of a cylindrical structure, and a blind hole is formed in the center of the gas-tight column; an annular groove is formed in a cylinder at one end of the gas-tight column (1), an O-shaped sealing ring (3) is installed in the groove, a stepped hole communicated with the central blind hole is formed in the other end of the gas-tight column (1) along the radius direction, a hole close to the outer surface of the cylinder is a large hole, a hole communicated with the blind hole is a small hole, the pin seat (4) is fixed in the large hole of the stepped hole, and the end part of the fixed pin seat (4) does not exceed the outer surface of the cylinder of the gas-tight column (1); the pin seat (4) is of a cylindrical structure, a step hole is formed in the center of the pin seat, and the inner diameter of the large step hole is larger than that of a small hole in the gas-retaining column (1) communicated with the blind hole; the pin seat (4) is fixed on the gas-tight column (1), and one end of the pin seat, which is provided with a large step hole, faces the direction of the blind hole of the gas-tight column (1); the stop pin (5) is of a cylindrical step-shaped structure and is positioned in the pin base (4), a large cylindrical surface of the stop pin and a large step hole of the pin base (4) form cylindrical surface clearance fit, and a small cylindrical part can penetrate out of a small step hole of the pin base (4); the air blocking disc (2) is of a revolving body structure, one end of the air blocking disc is a connector with a transmitting tube of transmitting equipment, and the other end of the air blocking disc is a disc with a central hole.

2. The device for preventing the high-pressure gas at the nozzle of the launching tube from interfering with the posture of the launched object as claimed in claim 1, wherein: high-pressure gas generated by propellant combustion acts on a driving structure consisting of an air-tight column (1) and a sealing ring (3) to drive the propellant to move towards the nozzle of the propellant; when one end of the gas-tight column (1) provided with the stop pin (5) leaves the emission tube opening and the other end is still positioned in the emission tube, high-pressure gas pushes the stop pin (5) to protrude out of the outer surface of the gas-tight column (1) through the central blind hole of the gas-tight column (1) and the central step hole of the pin seat (4); when the object to be launched continues to move to pass through the central hole of the air blocking disc (2), the air blocking column (1) which is arranged immediately behind the object to be launched blocks the central hole of the air blocking disc (2) due to the fact that the stop pin (5) is blocked by the disc of the air blocking disc (2), and high-pressure gas jetted from the launching tube is blocked by the air blocking column (1) and the air blocking disc (2).

Technical Field

The invention relates to a novel device for preventing high-pressure gas generated by burning propellant powder from interfering with the posture of a propellant after flying away from a launching tube, belonging to the technical field of launching.

Background

In some applications, in order to achieve a desired velocity of the objects, a common method is to place the objects in the launch tube of a slide-hearth launcher apparatus, where the objects are accelerated and then launched by the high pressure gas products generated by the combustion of the propellant. However, the object is accelerated in such a way, and two problems often exist, namely that the flying posture of the object is easily changed by the asymmetrical interference of the high-pressure gas sprayed from the emission pipe orifice after the object flies away from the emission pipe, and the high-pressure gas at the emission pipe orifice generates recoil to the emission equipment. This causes inconvenience in the use of the propellant charge burning type launching apparatus. In order to solve the problems, the invention provides a novel device which prevents high-pressure gas rushing out of a transmitting pipe orifice from interfering the posture of a transmitted object by using an air-closing structure, and reduces the recoil of transmitting equipment by applying forward impact force to the transmitting equipment by using the high-pressure gas of the transmitting pipe orifice. At present, no device for preventing the high-pressure gas at the nozzle of the launching tube from interfering the posture of the launched object and reducing the recoil of launching is seen at home and abroad.

Disclosure of Invention

The invention aims to provide a device for preventing high-pressure gas at a transmitting pipe orifice from interfering the posture of a transmitted object and reducing the recoil of transmission. The device is characterized in that: when the device is applied to the launching equipment which is provided with a smooth bore launching tube and is loaded by adopting a propellant powder combustion mode to accelerate the launched object, the high-pressure gas rushing out of a launching tube orifice can be prevented from interfering the posture of the launched object by utilizing the gas-closing structure, and the high-pressure gas sprayed out of the launching tube orifice is utilized to apply forward impact force to the launching equipment so as to reduce the recoil force of the launching equipment.

In order to solve the technical problem, the device for preventing the high-pressure gas at the opening of the launching tube from interfering the posture of the launched object comprises a gas blocking column, a gas blocking disc, a sealing ring, a pin seat and a stop pin; the air-blocking column is of a cylindrical structure, a blind hole is formed in the center of the air-blocking column, and the outer surface of the air-blocking column can form cylindrical surface clearance fit with the inner surface of an emission tube of the emission device; the cylinder at one end of the gas-closing column is provided with an annular groove, an O-shaped sealing ring is arranged in the groove, the other end of the gas-closing column is provided with a step hole communicated with the central blind hole along the radius direction, the hole close to the outer surface of the cylinder is a large hole, the hole communicated with the central blind hole is a small hole, the pin seat is fixed in the large hole of the step hole, and the end part of the fixed pin seat does not exceed the outer surface of the cylinder of the gas-closing column; the pin boss is of a cylindrical structure, a step hole is formed in the center of the pin boss, and the inner diameter of the large step hole is larger than that of a small hole, communicated with the blind hole, in the gas-retaining column; the pin seat is fixed on the gas-tight column, and one end of the pin seat, which is provided with a large step hole, faces the direction of the blind hole of the gas-tight column; the stop pin is of a cylindrical step-shaped structure and is positioned in the pin boss, a large cylindrical surface of the stop pin and a large step hole of the pin boss form cylindrical surface clearance fit, and a small cylindrical part can penetrate out of a small step hole of the pin boss and leave a proper clearance with the hole wall; the air blocking disc is of a revolving body structure, one end of the air blocking disc is a connector with a launching tube of launching equipment, the other end of the air blocking disc is a disc with a central hole, and the diameter of the central hole of the disc is slightly larger than the diameter of the launching tube; when the air blocking disc is arranged on the launching tube, the central lines of the air blocking disc and the launching tube are superposed; when the stop pin in the air-lock column moves outwards to the limit position along the radial direction of the air-lock column, the distance between the far end of the stop pin and the central line of the air-lock column is larger than the radius of the central hole of the disc of the air blocking disc.

When the propellant is accelerated by using the propellant powder burning type launching device, the closed gas column is arranged in the launching tube together with the sealing ring, the pin seat and the stop pin which are assembled on the closed gas column. The blind hole of the gas-tight column arranged in the launching tube faces to the burning end of the propellant powder in the launching tube 6, and the sealing ring is pressed on the inner surface of the launching tube and the groove of the gas-tight column at the moment so as to prevent high-pressure gas from leaking out from the gap between the gas-tight column and the launching tube when the gas-tight column moves in the launching tube; the stop pin is limited inside the pin seat by the inner surface of the launching tube; the object to be launched is arranged between the gas-closed column and the launching tube orifice, and one end of the object to be launched is contacted with the gas-closed column; the air blocking disc is connected to the launching tube through an interface between the air blocking disc and the launching tube, and the center line of the air blocking disc is superposed with the center line of the launching tube.

Gas products generated by the combustion of the propellant accelerate the gas-closed column and the object to be launched, the gas-closed column and the object to be launched move towards the mouth of the launching tube together in the launching tube, and high-pressure gas acts on the stop pin through the central blind hole of the gas-closed column and the central step hole of the pin seat, so that the stop pin is pressed on the inner cylindrical surface of the launching tube; when the small step hole of the pin seat fixedly connected with the gas-blocking column is completely exposed out of the emission tube, the stop pin protrudes out of the outer surface of the cylinder of the gas-blocking column under the action of high-pressure gas and reaches the limit position.

After the object to be launched passes through the disk center hole of the gas baffle disc, the gas blocking column which is arranged immediately behind the object to be launched cannot pass through the object to be launched because the stop pin is blocked by the gas baffle disc, the gas blocking column blocks the disk center hole of the gas baffle disc, and the combustion products of the propellant powder such as high-pressure gas jetted from the launching tube are blocked by the gas blocking column and the disk of the gas baffle disc, so that the motion and the posture of the object to be launched cannot be influenced.

The high-pressure gas ejected by the emission tube instantaneously impacts the disc of the air baffle disc, so that the recoil force generated by the emission device is offset by the impact force acting on the disc, and the recoil force of the emission device is greatly reduced (namely, the recoil force of the emission device is only generated by the momentum of the object to be emitted, and the recoil force generated by the high-pressure gas ejected by the emission tube is offset).

Has the advantages that:

when the device is applied to the launching device which is provided with a smoothbore launching tube and is loaded by adopting a propellant powder combustion mode, the device can prevent the high-pressure gas, flame and the like rushing out of the launching tube from interfering the posture of the launched object, and can reduce the recoil of the launching device to a great extent.

Drawings

FIG. 1 is a sectional view of a device for preventing high-pressure gas at a nozzle of a launching tube from interfering with the posture of a launched object according to the invention;

FIG. 2 is a schematic view of the connection between the device for preventing the high-pressure gas at the mouth of the launching tube from interfering with the posture of the object to be launched according to the present invention and the launching tube;

FIG. 3 is a schematic view of the device for preventing the high-pressure gas at the nozzle of the launcher from interfering with the posture of the object to be launched;

FIG. 4 is a schematic view of the device for preventing the high-pressure gas at the nozzle of the launching tube from interfering the posture of the launched object in the closed state.

In the figure: 1-gas-closing column, 2-gas-blocking disc, 3-sealing ring, 4-pin seat, 5-stop pin, 6-launching tube and 7-launched object.

Detailed Description

Referring to fig. 1 and 2, the posture device for preventing the high-pressure gas at the opening of the launching tube from interfering the launched object comprises a gas-tight column 1, a gas baffle disc 2, a sealing ring 3, a pin seat 4 and a stop pin 5; the gas-tight column 1 is of a cylindrical structure, a blind hole is formed in the center of the gas-tight column, and the outer surface of the gas-tight column can form cylindrical surface clearance fit with the inner surface of an emission tube 6 of emission equipment; an annular groove is formed in a cylinder at one end of the gas-tight column 1, an O-shaped sealing ring 3 is installed in the groove, a stepped hole communicated with the central blind hole is formed in the other end of the gas-tight column 1 along the radius direction, a hole close to the outer surface of the cylinder is a large hole, a hole communicated with the central blind hole is a small hole, the pin seat 4 is fixed in the large hole of the stepped hole, and the end part of the fixed pin seat 4 does not exceed the outer surface of the cylinder of the gas-tight column 1; the pin seat 4 is of a cylindrical structure, a step hole is formed in the center of the pin seat, and the inner diameter of the large step hole is larger than that of a small hole, communicated with the blind hole, in the gas-retaining column 1; the pin seat 4 is fixed on the gas-tight column 1, and one end of the pin seat, which is provided with a large step hole, faces the direction of the blind hole of the gas-tight column 1; the stop pin 5 is a cylindrical step-shaped structure and is positioned in the pin boss 4, a large cylindrical surface of the stop pin and a large step hole of the pin boss 4 form cylindrical surface clearance fit, and a small cylindrical part can penetrate out of a small step hole of the pin boss 4 and leave a proper clearance with a hole wall; the air blocking disc 2 is of a revolving body structure, one end of the air blocking disc is provided with an interface with the launching tube 6 of the launching equipment, the other end of the air blocking disc is provided with a disc with a central hole, and the diameter of the central hole of the disc is slightly larger than the caliber of the launching tube 6; when the gas baffle disc 2 is arranged on the emission tube 6, the central lines of the two are superposed; when the stop pin 5 in the gas-closing column 1 moves outwards to the limit position along the radius direction of the gas-closing column 1, the distance between the far end of the stop pin 5 and the central line of the gas-closing column 1 is larger than the radius of the central hole of the disc of the gas-blocking disc 2.

Referring to fig. 2, when the propellant is accelerated using the propellant charge combustion type launching device, the gas trap column 1 is placed inside the launching tube 6 together with the packing 3, the pin holder 4 and the stopper pin 5 mounted thereon. The blind hole of the gas-tight column 1 arranged in the transmitting tube 6 faces to the internal transmitting agent combustion end of the transmitting tube 6, and the sealing ring 3 is pressed on the inner surface of the transmitting tube 6 and the groove of the gas-tight column 1 at the moment so as to prevent high-pressure gas from leaking out from the gap between the gas-tight column 1 and the transmitting tube 6 when the gas-tight column moves in the transmitting tube 6; the stop pin 5 is limited inside the pin seat 4 by the inner surface of the launching tube 6; the object to be launched 7 is arranged between the gas-tight column 1 and the mouth of the launching tube 6, and one end of the object to be launched is in contact with the gas-tight column 1; the air blocking disc 2 is connected to the launching tube 6 through an interface between the air blocking disc and the launching tube 6, and the center line of the air blocking disc coincides with the center line of the launching tube 6.

Referring to fig. 3, gas products generated by the combustion of propellant powder accelerate the gas-closed column 1 and the propellant 7, the gas-closed column 1 and the propellant 7 move together in the launching tube 6 to the mouth of the launching tube 6, and at the moment, high-pressure gas acts on the stop pin 5 through the central blind hole of the gas-closed column 1 and the central step hole of the pin base 4, so that the stop pin 5 is pressed on the inner cylindrical surface of the launching tube 6; when the small step hole of the pin seat 4 fixedly connected to the gas-tight column 1 is completely exposed out of the emission tube 6, the stop pin 5 protrudes out of the cylindrical outer surface of the gas-tight column 1 under the action of high-pressure gas and reaches the limit position.

Referring to fig. 4, after the object to be shot 7 passes through the disk center hole of the gas baffle disk 2, the gas blocking column 1 immediately behind the object to be shot cannot pass through the gas baffle disk 2 because the stop pin 5 is blocked by the gas baffle disk 2, the gas blocking column 1 blocks the disk center hole of the gas baffle disk 2, and the combustion products of the propellant powder such as high-pressure gas ejected from the emission pipe 6 are blocked by the gas blocking column 1 and the disk of the gas baffle disk 2, so that the movement and posture of the object to be shot 7 are not influenced.

The high-pressure gas ejected from the launching tube 6 instantaneously impacts the disc of the gas baffle 2, so that the recoil force generated by the launching device is offset by the impact force acting on the disc, and the recoil force of the launching device is greatly reduced (namely, the recoil force of the launching device is generated only by the momentum of the object to be launched 7, and the recoil force generated by the high-pressure gas ejected from the launching tube 6 is offset).