CN116398643A - Special-shaped closed gas ring applied to rail balance gun - Google Patents
Special-shaped closed gas ring applied to rail balance gun Download PDFInfo
- Publication number
- CN116398643A CN116398643A CN202310463180.6A CN202310463180A CN116398643A CN 116398643 A CN116398643 A CN 116398643A CN 202310463180 A CN202310463180 A CN 202310463180A CN 116398643 A CN116398643 A CN 116398643A
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- Prior art keywords
- ring
- closed
- closed ring
- special
- bottom plate
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- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003721 gunpowder Substances 0.000 description 10
- 239000003814 drug Substances 0.000 description 6
- 238000005457 optimization Methods 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41F—APPARATUS FOR LAUNCHING PROJECTILES OR MISSILES FROM BARRELS, e.g. CANNONS; LAUNCHERS FOR ROCKETS OR TORPEDOES; HARPOON GUNS
- F41F1/00—Launching apparatus for projecting projectiles or missiles from barrels, e.g. cannons; Harpoon guns
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
- F16J15/48—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings influenced by the pressure within the member to be sealed
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
The invention relates to a special-shaped closed ring for a rail balance gun, which is of a disc-shaped structure with a groove, and particularly comprises a special-shaped groove, an edge thin wall, a reinforcing ring, a connecting part and a closed ring bottom plate; the closed ring bottom plate is provided with a special-shaped groove for enabling the closed ring to be attached to the track; the edge thin wall is arranged at the edge of the air-tight ring and is used for realizing radial sealing; the reinforcing ring is connected with the transition edge thin wall and the closed ring bottom plate and is used for providing structural support for the closed ring bottom plate; the bottom plate of the air-closed ring is provided with a connecting part for fixing the air-closed ring at the tail part of the projectile. Compared with the prior art, the special-shaped closed ring is suitable for balance cannons, realizes a good closed effect by applying a simple structure, and is convenient to install.
Description
Technical Field
The invention belongs to the field of high-pressure dynamic sealing, and particularly relates to a special-shaped closed ring applied to a rail balance gun.
Background
The closed ring is an important part in the gun, and the analysis of a closed mechanism and the correct selection of a closed mode are key points of realizing reliable closed. The sealing principle of the closed ring is that under the action of gunpowder air pressure, radial deformation is generated at the thin wall of the closed ring and the thin wall of the powder chamber is tightly contacted to realize radial sealing, and along with the increase of pressure, the contact force is increased, the axial bonding and the radial elastic bonding are tighter, and finally the aim of sealing gunpowder and gas is achieved.
The performance index of the closed ring is mainly (1) the reliability of closed gas: the gas-closing ring and the lining cylinder are in clearance fit, so that the leakage of gunpowder and gas is reduced as much as possible; (2) service life of the closed ring: the gas-tight ring is acted by gunpowder and gas, and the situation of unreliable gas-tight performance can occur after a certain number of shots; (3) safety in use of the closed ring: reliable measures are taken to ensure that the device is not damaged under working conditions; (4) service: the maintenance operation is convenient, and the replacement of parts is easy.
Currently, the types of the closed gas ring mainly comprise (1) the closed gas type of the inner cone of the barrel bore: the closed ring is mounted and matched with the inner wall of the medicine chamber at a certain angle, the closed ring generates radial elastic deformation under the pressure in the chamber, and the deformed closed ring is clung to the inner wall of the medicine chamber to finally realize radial sealing; (2) double conical surface closed gas: the closed ring is provided with double conical surfaces with diamond-shaped cross sections, the front conical surface and the rear conical surface are respectively attached to corresponding contact surfaces of the gun barrel inner bore and the gun barrel outer bore latch body, and the closed ring is expanded and calibrated by utilizing the gunpowder gas pressure in the bore to realize reliable sealing; (3) the outer end face of the chamber is closed with air: the gas-closing ring is connected to the latch body and moves together with the latch body, so that the pressure in the chamber is converted into the fitting force of the gas-closing ring and the end face of the barrel, and the gunpowder gas in the chamber is tightly sealed by the tight fitting of the end face of the gas-closing ring and the end face of the barrel; (4) mixed gas-tight type of inner radial and outer end face of the chamber: the front part of the closed ring is designed into a cylindrical surface or a thin-wall conical surface with a certain angle, and when the gun is launched, the front part of the thin-wall cylindrical surface is elastically deformed and tightly attached to the inner wall of the powder chamber, so that radial sealing is realized.
However, the above-mentioned closed gas ring type is only suitable for various conventional barrel type barrel gun shooting tests, and the barrel of the rail balance gun is paved with a running rail, so that the shot firing environment is not a circumferentially symmetrical barrel type, but becomes a special-shaped structure conforming to 'barrel+rail', therefore, the structure of the rail balance gun (the barrel is paved with a rail, and the shot runs on the rail) is completely unsuitable, and the closed gas problem of the rail balance gun is more serious.
Disclosure of Invention
The invention aims to provide a special-shaped closed ring applied to a rail balance gun, and aims to solve the problem that a good closed effect is difficult to ensure in the rail balance gun through reasonable structural size optimization, shape optimization and topology optimization aiming at the characteristic that a running rail is paved in a rail balance gun bore.
The technical solution for realizing the purpose of the invention is as follows: the special-shaped closed ring for the rail balance gun is of a disc-shaped structure with a groove, and specifically comprises a special-shaped groove, an edge thin wall, a reinforcing ring, a connecting part and a closed ring bottom plate; the closed ring bottom plate is provided with a special-shaped groove for enabling the closed ring to be attached to the track; the edge thin wall is arranged at the edge of the air-tight ring and is used for realizing radial sealing; the reinforcing ring is connected with the edge thin wall and the closed ring bottom plate and is used for providing structural support for the closed ring bottom plate; the bottom plate of the air-closed ring is provided with a connecting part for fixing the air-closed ring at the tail part of the projectile.
Compared with the prior art, the invention has the remarkable advantages that:
(1) The outer wall surface of the closed ring is a non-conical surface, and the outer diameter of the closed ring is the same as the outer diameter of the projectile, so that the closed ring can be easily installed in a balance gun with a constant diameter barrel to ensure good closed effect.
(2) The appearance of the closed ring is not circumferentially symmetrical, but a special-shaped structure conforming to the equal-diameter gun barrel and the track, so that the closed ring can be better attached to the inner wall of the gun barrel of the novel rail balance gun to ensure good closed gas effect;
(3) The gas-closing ring is provided with a circle of reinforcing ring, so that the strength of the gas-closing ring is enhanced, namely, the gas-closing ring is ensured to be in good structure under the action of gunpowder and gas, and the function of closing gas is realized;
(4) The groove tail of the closed ring is a smooth transition arc buckled inwards, and is attached to the track under the action of gunpowder and gas, so that the track is better wrapped by the arc buckled inwards, and the closed effect is improved.
Drawings
FIG. 1 is a schematic view of a front perspective of a closed loop;
FIG. 2 is a schematic view of the back perspective of the closed loop;
FIG. 3 is a schematic elevational view of the gas-blocking ring;
FIG. 4 is a cross-sectional view of the closed loop of FIG. 3 at A-A;
FIG. 5 is a plot of the rifling of a 1.99kg heavy projectile;
FIG. 6 is a plot of the rifling pressure of a 2.27kg heavy projectile.
Detailed Description
The invention is further described with reference to the drawings and specific embodiments. As shown in fig. 1, 2, 3 and 4, the special-shaped closed ring for the rail balance gun is in a disc shape with a groove and is mainly characterized by comprising a special-shaped groove 1, an edge thin wall 4, a reinforcing ring 5, a connecting hole 6 and a closed ring bottom plate 7. The closed ring bottom plate 7 is provided with a special-shaped groove 1 for attaching the closed ring to the track; the edge thin wall 4 is arranged at the edge of the closed ring and is divided into an arc section edge thin wall and a notch section edge thin wall, and is used for generating radial deformation when a bullet is launched, so that the outer wall of the closed ring is attached to the inner wall of the barrel and the inner wall of the track, and radial sealing is realized; the reinforcing ring 5 is used for connecting the transition edge thin wall 4 and the closed ring bottom plate, is a circle of thickened smooth conical surface, and besides the edge thin wall 4, the reinforcing ring 5 is designed to increase the integral structural strength of the closed ring, increase the structural support of the closed ring bottom plate and further increase the reliability of the closed ring; the bottom plate of the air-closed ring is provided with a connecting hole 6 for fixing the tail of the projectile by the air-closed ring through a screw.
The special-shaped groove 1 comprises a rectangular groove 2 and a groove tail 3, the structural shape of the rectangular groove 2 is designed according to the geometric cross section shape of the inner and outer tracks of the balance bore, and the shape of the groove is attached to the inner track of the balance bore; the groove tail 3 is a smooth transition arc which is buckled inwards, is attached to the track and buckles the track inwards, so that the air-tight effect is improved, and meanwhile, the stability of the movement of the projectile along the track is also improved; the connecting holes 6 are preferably three threaded holes which are symmetrical with the axis of the closed ring as the center;
meanwhile, according to the principle of internal trajectory, the pressure function of the medicine chamber is as follows:
wherein the method comprises the steps of
Indicating the average pressure in the chamber,/->
Is the ignition powder pressure>
For the action of powder>
For loading capacity, add>
Represents the mass percent of the burnt powder +.>
Is the volume of the medicine room, <' > is->
Is the density of gunpowder gas,/->
Is the residual volume of gunpowder.
Defining the depth of the closed loop as L, the functional relationship can be expressed as:
wherein: r is the radius of the outer wall surface of the closed air ring, p is the average pressure in the medicine room,
e is the elastic modulus of the material of the closed air ring and is the clearance between the outer wall surface of the closed air ring and the inner wall surface of the barrel, and +.>
Is an allowable stress of the closed air ring material.
The working principle of the special-shaped closed ring is as follows: in a shooting test of the rail balance gun, a special-shaped closed gas ring is fixed at the tail of a projectile by using a screw and is filled in a gun tube of the rail balance gun; the special-shaped groove 1 of the closed ring is attached to the inner track wall of the gun barrel, and when the gun barrel is launched, the edge thin wall 4 of the special-shaped closed ring is stressed to deform, the edge thin wall 4 is radially deformed, so that the outer wall of the edge thin wall of the circular arc section is attached to the inner wall of the gun barrel, and the edge thin wall of the notch section is attached to the track wall, so that radial sealing of the gun barrel is realized. And meanwhile, under the support of the reinforcing ring 5 and the closed ring bottom plate, the whole structure of the closed ring is stable, so that the sealing effect is better.
As shown in fig. 5 and 6, according to the test results, under the same powder charge, 1.99kg of the heavy projectile had a maximum chamber pressure of 198.0Mpa;2.27kg of heavy projectile, the maximum rifling pressure of the medicine chamber is 219.0Mpa, the maximum rifling pressure under two test working conditions is good in consistency, and the inner ballistic theory is met, so that the air tightness is good.
The special-shaped gas-closing ring provided by the invention is applied to the rail balance gun, has a simple structural design principle, is easy to realize, and ensures the gas-closing problem in the special-shaped gun barrel. On the premise of ensuring that other components of the balance gun are normal in function, the special-shaped closed gas ring is subjected to structural size optimization, shape optimization and topology optimization, and good closed gas effect is ensured.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The special-shaped closed ring for the rail balance gun is characterized in that the closed ring is of a disc-shaped structure with a groove and comprises a special-shaped groove, an edge thin wall, a reinforcing ring, a connecting part and a closed ring bottom plate; the closed ring bottom plate is provided with a special-shaped groove for enabling the closed ring to be attached to the track; the edge thin wall is arranged at the edge of the closed ring and is used for realizing radial sealing of the closed ring; the reinforcing ring is connected with the transition edge thin wall and the closed ring bottom plate and is used for providing structural support for the closed ring bottom plate; the bottom plate of the air-closed ring is provided with a connecting part for fixing the air-closed ring at the tail part of the projectile.
2. The contoured closure ring for a rail balance gun of claim 1, wherein the edge thin wall is divided into a circular arc segment edge thin wall and a slot segment edge thin wall.
3. The contoured closure ring for a rail balance gun of claim 1, wherein the connecting portion is a connecting hole.
4. The contoured closure ring for a rail balance gun of claim 1, wherein the reinforcement ring is a thickened smooth conical surface.
5. The contoured closure ring for a rail balance gun of claim 1, wherein the contoured slot comprises a rectangular recess and a slot tail.
6. The profiled closed loop for a rail balance gun of claim 1, wherein the depth of the closed loop satisfies the following condition:
wherein L is the depth of the closed gas ring,
indicating the average pressure in the chamber,/->
E is the elastic modulus of the material of the closed air ring and is the clearance between the outer wall surface of the closed air ring and the inner wall surface of the barrel, and +.>
Is an allowable stress of the closed air ring material.
7. The contoured closure ring for a rail balance gun of claim 1, wherein the contoured slot comprises a rectangular recess and a slot tail; the shape of the rectangular groove is consistent with the cross section shape of the set of the balance gun tracks; the groove tail is a smooth transition arc which is buckled inwards and is attached to the track and buckled inwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310463180.6A CN116398643B (en) | 2023-04-26 | 2023-04-26 | Special-shaped closed gas ring applied to rail balance gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310463180.6A CN116398643B (en) | 2023-04-26 | 2023-04-26 | Special-shaped closed gas ring applied to rail balance gun |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116398643A true CN116398643A (en) | 2023-07-07 |
| CN116398643B CN116398643B (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310463180.6A Active CN116398643B (en) | 2023-04-26 | 2023-04-26 | Special-shaped closed gas ring applied to rail balance gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116398643B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3446111A (en) * | 1967-09-01 | 1969-05-27 | Trw Inc | Recoilless open chamber gun |
| JP2011226656A (en) * | 2010-04-15 | 2011-11-10 | Ihi Aerospace Co Ltd | Recoilless gun |
| CN105222659A (en) * | 2015-09-18 | 2016-01-06 | 西北核技术研究所 | Centring type angle of attack bullet holder before and after a kind of Balance Gun |
| US20190204055A1 (en) * | 2018-01-03 | 2019-07-04 | Igor Abramov | Mortar system with improved gas seal |
| CN112504007A (en) * | 2020-11-27 | 2021-03-16 | 河北燕兴机械有限公司 | Latch body gas-closing structure for recoilless gun |
| CN115420151A (en) * | 2022-09-29 | 2022-12-02 | 南京理工大学 | Air-tight ring applied to equal-diameter barrel |
| CN115979075A (en) * | 2022-04-12 | 2023-04-18 | 南京理工大学 | Projectile body structure with air-tight bottom push |
-
2023
- 2023-04-26 CN CN202310463180.6A patent/CN116398643B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3446111A (en) * | 1967-09-01 | 1969-05-27 | Trw Inc | Recoilless open chamber gun |
| JP2011226656A (en) * | 2010-04-15 | 2011-11-10 | Ihi Aerospace Co Ltd | Recoilless gun |
| CN105222659A (en) * | 2015-09-18 | 2016-01-06 | 西北核技术研究所 | Centring type angle of attack bullet holder before and after a kind of Balance Gun |
| US20190204055A1 (en) * | 2018-01-03 | 2019-07-04 | Igor Abramov | Mortar system with improved gas seal |
| CN112504007A (en) * | 2020-11-27 | 2021-03-16 | 河北燕兴机械有限公司 | Latch body gas-closing structure for recoilless gun |
| CN115979075A (en) * | 2022-04-12 | 2023-04-18 | 南京理工大学 | Projectile body structure with air-tight bottom push |
| CN115420151A (en) * | 2022-09-29 | 2022-12-02 | 南京理工大学 | Air-tight ring applied to equal-diameter barrel |
Non-Patent Citations (3)
| Title |
|---|
| 来峰;芮筱亭;冯可华;: "平衡抛射武器内弹道性能研究", 南京理工大学学报(自然科学版), no. 02 * |
| 段吉员;刘仓理;王彦平;于川;: "平衡炮实验弹丸膛内过载计算模型及应用", 高压物理学报, no. 01 * |
| 雒智林;茹致贤;卢婷;张勇;: "高膛压楔式炮闩闭气形式分析", 火炮发射与控制学报, no. 02 * |
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|---|---|
| CN116398643B (en) | 2023-10-31 |
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