WO2007139446A1 - Barrel air-cooling device - Google Patents
Barrel air-cooling device Download PDFInfo
- Publication number
- WO2007139446A1 WO2007139446A1 PCT/RU2007/000264 RU2007000264W WO2007139446A1 WO 2007139446 A1 WO2007139446 A1 WO 2007139446A1 RU 2007000264 W RU2007000264 W RU 2007000264W WO 2007139446 A1 WO2007139446 A1 WO 2007139446A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- barrel
- muzzle
- casing
- air
- diameter
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A13/00—Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
- F41A13/12—Systems for cooling the outer surface of the barrel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A13/00—Cooling or heating systems; Blowing-through of gun barrels; Ventilating systems
- F41A13/10—Blowers or turbines for evacuating or cooling guns, e.g. driven by combustion gas pressure or recoil
Definitions
- the invention relates to firearms and equipment and is aimed at ensuring the survivability of the barrel of an automatic weapon, mainly firing in long bursts
- the device provides continuous blowing and a long time blowing the barrel when firing, however, the design is difficult to manufacture and adjust.
- the present invention solves the problem of increasing the survivability of the barrel and weapons as a whole with the simplicity and efficiency of the design of the device for cooling the barrel.
- the problem is solved in that in the device for forced cooling of the barrel, made in the form of a casing covering the barrel with a narrowing in the muzzle region to a diameter not less than the diameter of the bullet, and with subsequent expansion behind the muzzle section, the casing near the muzzle section is mounted on the barrel by means of ribs, and an axial turbine is installed on the side of the ribs facing away from the muzzle end. Through holes are made through holes with increasing diameters away from the muzzle.
- the barrel cooling method implemented in the inventive device is based on the Bernoulli effect, which consists in the fact that with an increase in the gas flow rate, the pressure in it decreases, and a decrease in pressure leads to the absorption of air from the environment through the openings in the casing. Since the inner part of the casing has a certain resistance to the air moving inside, with holes of equal diameter in the part of the casing, more remote from the muzzle, the air flow is weaker. The uniformity of the air flow inside the casing is ensured by the increase in the diameter of the holes in the casing as they move away from the muzzle.
- the invention is illustrated by the description and the attached drawings, which shows a General view of the air cooling device mounted on the barrel.
- the device comprises a barrel 1, on which, through a support in the form of ribs 2, a casing 3 is installed, made with a smooth narrowing in the region of the muzzle section to a diameter no smaller than the diameter of the bullet, and then expanding beyond the muzzle section.
- Through holes 4 are made on the surface of the casing, the diameter of which increases as the hole is indented from the muzzle end line.
- An axial turbine 5 is installed near the support of the casing. The device operates as follows.
- powder gases moving in the casing with high speed create rarefaction in the region of the casing openings, facilitating the absorption of air from the environment, which takes heat from the barrel, through the casing.
- the flow rate of powder gases increases due to a decrease in the diameter of the casing in the muzzle region.
- the flow tells it to rotate, which enhances the suction effect. Improving the cooling efficiency of the barrel increases the resource of weapons and accuracy.
- the invention can be used in the design of automatic small arms, mainly firing in long bursts.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention relates to fire arms and munition and is used for increasing the survivability of a fire arm barrel, mainly of long-burst arms. The inventive barrel air-cooling device (1) is embodied in the form of a jacket (3), which envelops the barrel, is tapered in the area of a muzzle to a diameter equal to or greater than a bullet diameter and expands after the muzzle. Said jacket is mounted on the barrel near the muzzle by means of ribs (2). An axial turbine is arranged on the side of the ribs oriented away from the muzzle. Through openings (4), the diameters of which increase in a direction towards the muzzle, are embodied in the jacket. The invention increases the survivability on the barrel and of the arm in its entirety.
Description
Устройство воздушного охлаждения ствола Barrel air cooler
Изобретение относится к огнестрельному оружию и снаряжению и направлено на обеспечение живучести ствола автоматического оружия, преимущественно стреляющего большими очередямиThe invention relates to firearms and equipment and is aimed at ensuring the survivability of the barrel of an automatic weapon, mainly firing in long bursts
Известно автоматическое стрелковое оружие по патенту RU, 2067276, кл. F41A13/12, 1996г., содержащее ствольную коробку, ствол с газовой камерой и эжектор с воздухозаборными отверстиями, установленный на газовой камере или возле нее. В процессе стрельбы истекающие из ствола пороховые газы увлекают за собой воздух, находящийся в зазоре между корпусом и стволом, при этом в воздухозаборные отверстия входит воздух из окружающей среды, охлаждая наиболее сильно нагретый участок ствола за газоотводным отверстием. Известен ствол с устройством принудительного воздушного охлаждения по патенту RU, 2015486, кл. F41A13/10, 1994г., содержащее ствол, выполненную в придульной части канала ствола расширительную камеру, осевую газовую турбину с наклонными лопатками, установленную на подшипнике, цилиндрический вентилятор с продольными лопатками и боковыми окнами, образующими центробежный вентилятор. На торце цилиндрического вентилятора, размещенном у казенной части ствола, закреплены лопатки, образующие осевой вентилятор (нагнетатель). После вылета снаряда за дульный срез пороховые газы при истечении разгоняют турбину и соединенные с ней элементы устройства. Лопатки осевого вентилятора нагнетают в полость цилиндрического вентилятора наружный воздух, который отбирает тепло от поверхности ствола, а действием лопаток выгоняет нагретый воздух через боковые окна цилиндрического вентилятора. Устройство обеспечивает непрерывный обдув и продолжительное время обдува ствола при стрельбе, однако конструкция сложна в изготовлении и регулировке.
Настоящее изобретение решает задачу повышения живучести ствола и оружия в целом при простоте и эффективности конструкции устройства принудительного охлаждения ствола.Known automatic small arms according to patent RU, 2067276, class. F41A13 / 12, 1996, comprising a receiver, a barrel with a gas chamber and an ejector with air intake openings mounted on or near the gas chamber. During firing, powder gases flowing from the barrel entrain air that is in the gap between the body and the barrel, while air enters the air inlets from the environment, cooling the most heated section of the barrel behind the vent hole. Known barrel with a device of forced air cooling according to patent RU, 2015486, class. F41A13 / 10, 1994, containing a barrel, an expansion chamber made in the muzzle of the barrel bore, an axial gas turbine with inclined vanes mounted on a bearing, a cylindrical fan with longitudinal vanes and side windows forming a centrifugal fan. At the end of the cylindrical fan located at the breech of the barrel, blades are fixed, forming an axial fan (supercharger). After the projectile goes beyond the muzzle, the powder gases, upon expiration, accelerate the turbine and the connected elements of the device. The axial fan blades pump outside air into the cavity of the cylindrical fan, which draws heat from the barrel surface, and expels heated air through the side windows of the cylindrical fan by the action of the blades. The device provides continuous blowing and a long time blowing the barrel when firing, however, the design is difficult to manufacture and adjust. The present invention solves the problem of increasing the survivability of the barrel and weapons as a whole with the simplicity and efficiency of the design of the device for cooling the barrel.
Задача решается тем, что в устройстве принудительного охлаждения ствола, выполненном в виде охватывающего ствол кожуха с сужением в области дульного среза до диаметра, не меньшего диаметра пули, и с последующим расширением за дульным срезом, кожух вблизи дульного среза установлен на стволе посредством ребер, а со стороны ребер, обращенной от дульного среза, установлена осевая турбина. По поверхности кожуха выполнены сквозные отверстия с увеличивающимися диаметрами в сторону от дульного среза.The problem is solved in that in the device for forced cooling of the barrel, made in the form of a casing covering the barrel with a narrowing in the muzzle region to a diameter not less than the diameter of the bullet, and with subsequent expansion behind the muzzle section, the casing near the muzzle section is mounted on the barrel by means of ribs, and an axial turbine is installed on the side of the ribs facing away from the muzzle end. Through holes are made through holes with increasing diameters away from the muzzle.
Способ охлаждения ствола, реализованный в заявляемом устройстве, основан на эффекте Бернулли, заключающимся в том, что при увеличении скорости газового потока давление в нем снижается, а снижение давления приводит к всасыванию через отверстия в кожухе воздуха из окружающей среды. Поскольку внутренняя часть кожуха обладает определенным сопротивлением движущемуся внутри воздуху, при отверстиях равного диаметра в части кожуха, более удаленной от дульного среза, приток воздуха слабее. Равномерность силы воздушного потока внутри кожуха и обеспечивается увеличением диаметра отверстий в кожухе по мере удаления их от дульного среза.The barrel cooling method implemented in the inventive device is based on the Bernoulli effect, which consists in the fact that with an increase in the gas flow rate, the pressure in it decreases, and a decrease in pressure leads to the absorption of air from the environment through the openings in the casing. Since the inner part of the casing has a certain resistance to the air moving inside, with holes of equal diameter in the part of the casing, more remote from the muzzle, the air flow is weaker. The uniformity of the air flow inside the casing is ensured by the increase in the diameter of the holes in the casing as they move away from the muzzle.
Изобретение поясняется описанием и приложенными к нему чертежами, на котором, представлен общий вид устройства воздушного охлаждения, установленного на стволе. Устройство содержит ствол 1, на котором посредством опоры в виде ребер 2 установлен кожух 3, выполненный с плавным сужением в области дульного среза до диаметра, не меньшего диаметра пули, и с последующим расширением за дульным срезом. По поверхности кожуха выполнены сквозные отверстия 4, диаметр которых увеличивается по мере отступа отверстия от линии дульного среза. Вблизи опоры кожуха установлена осевая турбина 5.
Устройство функционирует следующим образом. В процессе стрельбы пороховые газы, двигаясь в кожухе с большой скоростью, создают разрежение в области отверстий кожуха, способствуя всасыванию по кожух воздуха из окружающей среды, отбирающего тепло от ствола. Скорость потока пороховых газов возрастает за счет уменьшения диаметра кожуха в области дульного среза. Воздействуя на лопатки турбины, поток сообщает ей вращение, что усиливает эффект всасывания. Повышение эффективности охлаждения ствола увеличивает ресурс оружия и точность стрельбы. Изобретение может быть использовано при конструировании автоматического стрелкового оружия, преимущественно стреляющего длинными очередями.
The invention is illustrated by the description and the attached drawings, which shows a General view of the air cooling device mounted on the barrel. The device comprises a barrel 1, on which, through a support in the form of ribs 2, a casing 3 is installed, made with a smooth narrowing in the region of the muzzle section to a diameter no smaller than the diameter of the bullet, and then expanding beyond the muzzle section. Through holes 4 are made on the surface of the casing, the diameter of which increases as the hole is indented from the muzzle end line. An axial turbine 5 is installed near the support of the casing. The device operates as follows. In the process of firing, powder gases moving in the casing with high speed create rarefaction in the region of the casing openings, facilitating the absorption of air from the environment, which takes heat from the barrel, through the casing. The flow rate of powder gases increases due to a decrease in the diameter of the casing in the muzzle region. By acting on the turbine blades, the flow tells it to rotate, which enhances the suction effect. Improving the cooling efficiency of the barrel increases the resource of weapons and accuracy. The invention can be used in the design of automatic small arms, mainly firing in long bursts.
Claims
Формула изобретенияClaim
Устройство воздушного охлаждения ствола, выполненное в виде охватывающего ствол кожуха с сужением в области дульного среза до диаметра, не меньшего диаметра пули, и с последующим расширением за дульным срезом, отличающееся тем, что кожух вблизи дульного среза установлен на стволе посредством ребер, а со стороны ребер, обращенной от дульного среза, установлена осевая турбина, при этом по поверхности кожуха выполнены сквозные отверстия с увеличивающимися диаметрами в сторону от дульного среза.
The barrel air cooling device, made in the form of a casing covering the barrel with a narrowing in the muzzle region to a diameter not less than the diameter of the bullet, and then expanding behind the muzzle section, characterized in that the casing near the muzzle section is mounted on the barrel by ribs, and from the side of the ribs facing the muzzle end, an axial turbine is installed, and through holes are made on the surface of the casing with increasing diameters away from the muzzle end.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2006118098 | 2006-05-26 | ||
| RU2006118098/02A RU2312292C1 (en) | 2006-05-26 | 2006-05-26 | Firearm barrel with air-cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2007139446A1 true WO2007139446A1 (en) | 2007-12-06 |
Family
ID=38778867
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/RU2007/000264 WO2007139446A1 (en) | 2006-05-26 | 2007-05-24 | Barrel air-cooling device |
Country Status (2)
| Country | Link |
|---|---|
| RU (1) | RU2312292C1 (en) |
| WO (1) | WO2007139446A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2466339C1 (en) * | 2011-05-13 | 2012-11-10 | Учреждение Российской академии наук Институт прикладной механики Уральского отделения РАН | Cooling device of artillery-type and small-arms weapon barrels |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE487228C (en) * | 1926-05-29 | 1929-12-04 | Rheinische Metallw & Maschf | Cooling device for firearms, especially machine guns |
| FR1157227A (en) * | 1956-08-10 | 1958-05-28 | Hispano Suiza Sa | Improvements made to automatic weapons, particularly small caliber ones |
| RU2089813C1 (en) * | 1993-11-04 | 1997-09-10 | Центральный научно-исследовательский институт точного машиностроения | Automatic weapon |
-
2006
- 2006-05-26 RU RU2006118098/02A patent/RU2312292C1/en not_active IP Right Cessation
-
2007
- 2007-05-24 WO PCT/RU2007/000264 patent/WO2007139446A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE487228C (en) * | 1926-05-29 | 1929-12-04 | Rheinische Metallw & Maschf | Cooling device for firearms, especially machine guns |
| FR1157227A (en) * | 1956-08-10 | 1958-05-28 | Hispano Suiza Sa | Improvements made to automatic weapons, particularly small caliber ones |
| RU2089813C1 (en) * | 1993-11-04 | 1997-09-10 | Центральный научно-исследовательский институт точного машиностроения | Automatic weapon |
Also Published As
| Publication number | Publication date |
|---|---|
| RU2312292C1 (en) | 2007-12-10 |
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