CN115822819B - Ball socket spray pipe and jet propulsion device - Google Patents
Ball socket spray pipe and jet propulsion device Download PDFInfo
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- CN115822819B CN115822819B CN202310107551.7A CN202310107551A CN115822819B CN 115822819 B CN115822819 B CN 115822819B CN 202310107551 A CN202310107551 A CN 202310107551A CN 115822819 B CN115822819 B CN 115822819B
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Abstract
The invention relates to the technical field of aerospace propulsion, in particular to a ball socket spray pipe and a jet propulsion device. The ball socket spray pipe comprises a female ball socket, a male ball head, an expansion section and a limiting mechanism, wherein the female ball socket is provided with a first inner cavity, and Yang Qiutou is arranged on one side of the female ball socket, which is close to the first inner cavity; the male ball head comprises a first end and a second end, the expansion section is connected to the second end, and the female ball socket is arranged between the first end and the second end; the female ball socket is provided with a first spherical surface, the male ball head is provided with a second spherical surface, the first spherical surface and the second spherical surface share the spherical center, and the spherical center is arranged at one side of the first inner cavity close to the first end; the limiting mechanism comprises a limiting plate and a limiting ejector rod assembly, the limiting plate comprises an arc plate part with an arc surface, the arc center and the sphere center are concentric, and the limiting ejector rod assembly is abutted to the arc surface. The jet propulsion device comprises the ball socket spray pipe. The invention provides a ball socket spray pipe and a jet propulsion device, which are used for solving the technical problem that a limiting mechanism occupies a larger space outside the ball socket spray pipe in the prior art.
Description
Technical Field
The invention relates to the technical field of aerospace propulsion, in particular to a ball socket spray pipe and a jet propulsion device.
Background
The ball socket spray pipe technology is one of key technologies for vector control of a solid rocket engine, and is also an advanced technology commonly adopted by the current small and medium tactical missile engines. The ball socket spray pipe comprises a cold ball socket spray pipe and a hot ball socket spray pipe, wherein the spherical surface part of the cold ball socket spray pipe is always kept at normal temperature in the working process of the engine, and the spherical surface part of the hot ball socket spray pipe is in a high-temperature state in the working process of the engine.
The ball socket spray pipe can realize the full-axis swing of a larger angle, so that the direction of the fuel gas of the spray nozzle is changed, larger side thrust is realized, and the flight attitude of the rocket is adjusted. Specifically, referring to fig. 1, fig. 1 is a schematic partial structure diagram of a ball socket nozzle in the prior art, the ball socket nozzle includes a first female ball socket 1' for connecting a combustion chamber, a first male ball head 2' is connected in the first female ball socket 1', a ball socket structure is formed by cooperation between the first female ball socket 1' and the first male ball head 2', the first male ball head 2' is coaxially connected with a first expansion section 3', and the combustion chamber is communicated with the first expansion section 3' through an inner cavity in the first male ball head 2 '. The working principle is that the swing angle of the first expansion section 3 'is adjusted through the action of the servo actuator, so that high-temperature, high-pressure and high-speed fuel gas in the combustion chamber is ejected from the opening end of the first expansion section 3' according to a preset angle through the inner cavity, the engine obtains the thrust of the preset angle under the reaction, and attitude and orbit control in the directions of pitching, yawing, rolling and the like of the engine is realized through the control of the preset angle, so that the target is accurately hit.
Wherein, in order to guarantee the leakproofness between first female ball socket 1 'and the first expansion section 3', be connected with stop gear between the two, stop gear often sets up in the outside of ball socket spray tube, and among the prior art, stop gear occupies the outside space of ball socket spray tube great, influences the installation and the coordination of the outside electric elements of ball socket spray tube.
Accordingly, the present application addresses the above-mentioned problems by providing a new ball and socket nozzle and jet propulsion device.
Disclosure of Invention
The invention aims to provide a ball socket spray pipe so as to solve the technical problem that a limiting mechanism in the prior art occupies a large space outside the ball socket spray pipe.
The invention also aims to provide the jet propulsion device so as to further solve the technical problem that a limiting mechanism occupies a larger space outside the ball socket jet pipe in the prior art.
Based on the first object, the invention provides a ball socket spray pipe, which comprises a female ball socket, a male ball head, an expansion section and a limiting mechanism, wherein the female ball socket is provided with a first inner cavity, and Yang Qiutou is arranged on one side of the female ball socket, which is close to the first inner cavity;
along the extending direction of the first inner cavity, the male ball head comprises a first end and a second end which are oppositely arranged, the expansion section is connected with the second end of the Yang Qiutou, and the female ball socket is arranged between the first end and the second end;
the surface of the female ball socket, which is close to the male ball socket, is a first spherical surface, the surface of the male ball socket, which is close to the female ball socket, is a second spherical surface, the first spherical surface and the second spherical surface share the spherical center, and the spherical center is arranged at one side of the first inner cavity, which is close to the first end;
the limiting mechanism comprises a limiting plate connected with the female ball socket and a limiting ejector rod assembly connected with the expansion section, the limiting plate comprises an arc plate part with an arc surface, the arc center of the arc surface is concentric with the ball center, and the limiting ejector rod assembly is abutted to the arc surface.
Further, the arc plate part comprises an inner arc surface close to the arc core and an outer arc surface far away from the arc core, and the limiting ejector rod assembly is arranged on one side, far away from the arc core, of the arc plate part and is abutted to the outer arc surface.
Further, the expansion section is provided with a mounting protrusion, and a mounting screw hole is formed in the mounting protrusion;
the limiting ejector rod assembly comprises a limiting screw rod, one end of the limiting screw rod is rotatably connected with a limiting head, the other end of the limiting screw rod is rotatably connected with the mounting screw hole, and the limiting head is abutted to the cambered surface.
Further, the limit screw comprises a first thread section and a second thread section, the threads of the first thread section and the threads of the second thread section are opposite in screwing direction, the limit head is screwed on the first thread section, and the second thread section is screwed on the mounting screw hole;
the limiting ejector rod assembly further comprises a first locking nut and a second locking nut, wherein the first locking nut is screwed on the first threaded section and is abutted against the limiting head; the second lock nut is screwed on the second thread section, is positioned on one side of the mounting protrusion away from the limiting head, and is abutted to the mounting protrusion.
Further, the female ball socket comprises a female ball shell, the first inner cavity is arranged in the female ball shell, and a female ball heat insulation layer is arranged on one side of the female ball shell;
the male ball head comprises a male ball shell, the male ball shell is arranged on one side, close to the first inner cavity, of the female ball shell, and a male ball heat insulation layer is arranged on one side, far away from the female ball shell, of the male ball shell;
the expansion section comprises an expansion shell provided with an injection channel, and an expansion heat insulation layer is arranged on one side of the expansion shell, which is close to the injection channel;
the female ball heat insulation layer is arranged on one side, close to the first end, of the female ball shell, and the expansion shell is connected to the second end of the Yang Qiu shell.
Further, the female ball heat insulation layer, the male ball heat insulation layer and the expansion heat insulation layer are fiber cloth/phenolic aldehyde composite winding pieces, high silica/phenolic aldehyde molding pieces, carbon/carbon composite pieces or high silica cloth and phenolic aldehyde winding pieces.
Further, the ball socket spray pipe also comprises a torsion-resistant mechanism sleeved outside the male ball head;
along the extending direction of the first inner cavity, the torsion-resistant mechanism comprises a third end and a fourth end which are oppositely arranged, wherein the third end is connected with the female ball socket, and the fourth end is connected with the male ball head.
Further, the torsion-resistant mechanism is a cloth-sandwiched rubber piece.
By adopting the technical scheme, the ball socket spray pipe has the following beneficial effects:
it is to be added that the first end is close to the combustion chamber, the combustion chamber is used for being connected with the female ball socket, and the combustion chamber is communicated with the expansion section through the male ball head, so that high-temperature, high-pressure and high-speed fuel gas in the combustion chamber can be sprayed out from the opening end of the expansion section through the male ball head, and the engine can obtain the thrust of a preset angle under the reaction.
The first spherical surface of the female ball socket is in friction pair contact with the second spherical surface of the male ball socket. When the ball socket spray pipe moves, the servo actuator drives the expansion section to swing relative to the female ball socket, so that the expansion section drives the male ball head to swing together, the swing center is the center of the first spherical surface and the second spherical surface, namely, the second spherical surface of the male ball head rotates relative to the first spherical surface of the female ball socket, and the rotation center is the center of the sphere.
Wherein, the in-process that the expansion section was swung relative to the female ball socket, spacing ejector pin subassembly is swung along with the expansion section altogether, and spacing ejector pin subassembly removes and is not broken away from the arc board portion all the time relative limiting plate's arc board portion this moment, has guaranteed the leakproofness between female ball socket and the expansion section. In addition, because the limit ejector rod assembly is abutted to the cambered surface of the cambered plate part, the limit ejector rod assembly moves along the cambered surface of the limit plate to form an arc movement track, the swing track of the expansion section is limited, the swing track of the expansion section is identical to the movement track of the limit ejector rod assembly, the swing track of the expansion section is an arc track taking the arc center of the cambered surface as the center, and when the expansion section swings, yang Qiutou swings together with the expansion section, the swing of the male ball head, namely the second spherical surface of the male ball head, rotates relative to the first spherical surface of the female ball socket, the center of rotation is the spherical center, and the arc center of the cambered surface is concentric with the spherical center, so that the movement of the limit ejector rod assembly relative to the cambered plate part, the swing of the expansion section and the swing of the male ball head are correspondingly matched, and the clamping or the separation of the limit ejector rod assembly and the limit plate are prevented.
In the prior art, the limiting plate is connected to the expansion section, the limiting ejector rod assembly is connected to the female ball socket, and the limiting ejector rod assembly is abutted to the cambered surface of the limiting plate to seal between the female ball socket and the expansion section. In order to ensure that the limiting ejector rod assembly can always be abutted to the cambered surface of the limiting plate and is not easy to deviate from, the cambered surface of the limiting plate needs to be designed to be longer. Such setting, when limiting plate swings along with expansion section, especially under limit swing angle, limiting plate very easily interferes in the space with the female ball socket, consequently in order to solve this problem, prevent limiting plate and female ball socket interference, need install the limiting plate in the expansion section position of keeping away from female ball socket, make the limiting plate keep away from female ball socket, and in order to guarantee that spacing ejector pin subassembly can the butt all the time in the cambered surface department of limiting plate, need design spacing ejector pin subassembly into longer size and great diameter, so increased the occupation of stop gear to ball socket spray tube outer space, and increased the weight of ball socket spray tube.
In this embodiment, the expansion section is connected in Yang Qiutou's second end, the female ball socket sets up between the first end and the second end of male bulb, the ball center sets up in one side that the first inner chamber is close to first end, consequently, the female ball socket is close to the ball center in the expansion section, and the limiting plate is connected in the female ball socket, consequently, compare in prior art the limiting plate is connected in the expansion section, the limiting rod subassembly is connected in the female ball socket, and the limiting plate is located the expansion section and keeps away from the position of female ball socket, the limiting plate of this embodiment is closer to the ball center, under the prerequisite that the cambered surface radian of arc plate portion is the same on the limiting plate, the arc plate portion and the ball socket's of this embodiment distance is less, consequently, less cambered surface on the arc plate portion can be realized with limiting rod subassembly's butt and spacing rod subassembly is difficult for deviate from, need not to increase the cambered surface length of arc plate portion and spacing rod subassembly butt reliability, and need not to lengthen the length and the diameter of spacing rod subassembly, consequently, the occupation of spacing mechanism to the outside space of ball socket, for the outside system structure of spray tube outside is saved more installation space, and the weight is reduced, the compact spray tube weight has been realized, the requirement is reduced, the spray tube weight is reduced.
In addition, the limiting plate is connected to the female ball socket, so that the problem that the limiting plate and the female ball socket interfere in space is avoided, and the limiting ejector rod assembly connected to the expansion section is always abutted to the cambered surface of the limiting plate, so that the limiting ejector rod assembly does not interfere with the female ball socket in space in the swinging process of the expansion section.
In conclusion, the ball socket spray pipe relieves the technical problem that the limiting mechanism in the prior art occupies a large space outside the ball socket spray pipe.
Based on the second object, the present invention provides a jet propulsion device, comprising two servo actuators and said ball socket nozzle, wherein one of said servo actuators is connected to the female ball socket of said ball socket nozzle, and the other of said servo actuators is connected to said expansion section.
Further, a first mounting lug for connecting the servo actuator is arranged on the female ball socket, and a second mounting lug for connecting the servo actuator is arranged on the expansion section.
By adopting the technical scheme, the jet propulsion device has the following beneficial effects:
by providing the above-described ball and socket nozzle in a jet propulsion device, the jet propulsion device accordingly has all the advantages of the above-described ball and socket nozzle and will not be described in detail herein.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a partial construction of a prior art ball and socket nozzle;
FIG. 2 is a schematic view of a ball socket nozzle according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of a ball socket nozzle provided in an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a ball socket nozzle according to an embodiment of the present invention shown in a first orientation;
fig. 5 is a cross-sectional view of the ball socket nozzle according to the embodiment of the present invention when the ball socket nozzle swings in the second direction.
Reference numerals:
1' -a first female socket; 2' -a first male bulb; 3' -a first expansion segment;
4' -first limiting plate; 5' -a first limiting ejector rod assembly;
1-female socket; 11-a female ball housing; 12-a female ball insulation layer;
2-Yang Qiutou; 21-Yang Qiu shell; 22-a male ball insulation layer;
3-an expansion section; 31-mounting projections; 32-an expansion shell; 33-an expansion insulating layer;
4-limiting plates;
51-limiting screw rods; 52-a positioning head; 53-a first lock nut; 54-a second lock nut;
6-an anti-torsion mechanism;
7-a first mounting lug;
8-a second mounting lug.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
Referring to fig. 2 in combination with fig. 3, the present embodiment provides a ball socket nozzle, which includes a female ball socket 1, a male ball head 2, an expansion section 3 and a limiting mechanism, wherein the female ball socket 1 is provided with a first inner cavity, and the male ball head 2 is disposed at one side of the female ball socket 1 close to the first inner cavity; along the extending direction of the first inner cavity, the male ball head 2 comprises a first end and a second end which are oppositely arranged, the expansion section 3 is connected with the second end of the male ball head 2, and the female ball socket 1 is arranged between the first end and the second end; one surface of the female ball socket 1, which is close to the male ball socket 2, is a first spherical surface, one surface of the male ball socket 2, which is close to the female ball socket 1, is a second spherical surface, the first spherical surface and the second spherical surface share the spherical center, and the spherical center is arranged at one side of the first inner cavity, which is close to the first end; the limiting mechanism comprises a limiting plate 4 connected to the female ball socket 1 and a limiting ejector rod assembly connected to the expansion section 3, the limiting plate 4 comprises an arc plate part with an arc surface, the arc center and the sphere center of the arc surface are concentric, and the limiting ejector rod assembly is abutted to the arc surface.
It is to be added that the first end is close to the combustion chamber, the combustion chamber is used for being connected with the female ball socket 1, and the combustion chamber is communicated with the expansion section 3 through the male ball head 2, so that high-temperature, high-pressure and high-speed fuel gas in the combustion chamber can be sprayed out from the opening end of the expansion section 3 through the male ball head 2, and the engine can obtain the thrust of a preset angle under the reaction.
The first spherical surface of the female ball socket 1 and the second spherical surface of the male ball head 2 form friction pair contact. When the ball socket spray pipe moves, the servo actuator drives the expansion section 3 to swing relative to the female ball socket 1, so that the expansion section 3 drives the male ball head 2 to swing together, the swing center is the center of the first spherical surface and the second spherical surface, namely, the second spherical surface of the male ball head 2 rotates relative to the first spherical surface of the female ball socket 1, and the rotation center is the center of the sphere.
Wherein, the in-process of expansion section 3 relative female ball socket 1 swing, spacing ejector pin subassembly is with expansion section 3 swing altogether, and spacing ejector pin subassembly removes and does not break away from the arc board portion all the time with the arc board portion of limiting plate 4 this moment, has guaranteed the leakproofness between female ball socket 1 and the expansion section 3. In addition, because the limiting ejector rod assembly is abutted to the cambered surface of the cambered plate part, the limiting ejector rod assembly moves along the cambered surface of the limiting plate 4 to form an arc movement track, the swing track of the expansion section 3 is limited, the swing track of the expansion section 3 is identical to the movement track of the limiting ejector rod assembly, the swing track of the expansion section 3 is an arc track taking the arc center of the cambered surface as the center, when the expansion section 3 swings, the male ball head 2 swings together with the expansion section 3, the swing of the male ball head 2, namely the second spherical surface of the male ball head 2, rotates relative to the first spherical surface of the female ball socket 1, the center of rotation is the spherical center, and because the arc center of the cambered surface and the spherical center are concentric, the movement of the limiting ejector rod assembly relative to the cambered plate part and the swing of the expansion section 3 are correspondingly matched with the swing of the male ball head 2, and the limiting ejector rod assembly and the limiting plate 4 are prevented from being blocked or separated.
Referring to fig. 1, fig. 1 is a schematic partial structure diagram of a ball socket nozzle in the prior art, in which a first limiting plate 4 'is connected to a first expansion section 3', a first limiting ejector rod assembly 5 'is connected to a first female ball socket 1', and the first limiting ejector rod assembly 5 'abuts against an arc surface of the first limiting plate 4' to seal between the first female ball socket 1 'and the first expansion section 3'. In order to ensure that the first limiting ejector rod assembly 5' can always be abutted against the cambered surface of the first limiting plate 4' and is not easy to break away, the cambered surface of the first limiting plate 4' needs to be designed to be longer. In this arrangement, when the first limiting plate 4 'swings along with the first expansion section 3', especially under the limit swinging angle, the first limiting plate 4 'is very easy to interfere with the first female ball socket 1' in space, so in order to solve the problem, the first limiting plate 4 'is prevented from interfering with the first female ball socket 1', the first limiting plate 4 'needs to be installed at the position of the first expansion section 3' away from the first female ball socket 1', the first limiting plate 4' is kept away from the first female ball socket 1', and in order to ensure that the first limiting ejector rod assembly 5' can always abut against the cambered surface of the first limiting plate 4', the first limiting ejector rod assembly 5' needs to be designed to have a longer size and a larger diameter, so that the occupation of the limiting mechanism to the outer space of the ball socket nozzle is increased, and the weight of the ball socket nozzle is increased.
In this embodiment, expansion section 3 is connected in the second end of sun bulb 2, female ball socket 1 sets up between the first end and the second end of sun bulb 2, the ball center sets up in the one side that the cambered surface radian of arc plate portion is close to first end on the limiting plate, consequently, female ball socket 1 is close to the ball center in expansion section 3, and limiting plate 4 is connected in female ball socket 1, consequently, compare in prior art first limiting plate 4 'and connect in first expansion section 3', first spacing ejector pin subassembly 5 'is connected in first female ball socket 1', and first limiting plate 4 'is located the position that first expansion section 3' kept away from first female ball socket 1', the ball socket is closer to the ball center, under the prerequisite that the cambered surface radian of arc plate portion is the same on the limiting plate, the cambered surface of this embodiment is less than the ball center, consequently, the arc plate portion of this embodiment can realize with limiting ejector pin subassembly's butt and spacing ejector pin subassembly is difficult for deviate from, and the cambered surface length of arc plate portion is increased in order to improve arc plate portion and spacing ejector pin subassembly butt reliability, and the ball socket structure is compact, the outside has been realized for the more and the outside is reduced in size, the spray tube structure is more occupied to the outside has been realized, the spray tube is reduced to the more space is reduced.
In addition, the limiting plate 4 is connected to the female ball socket 1, so that the problem that the limiting plate 4 and the female ball socket 1 interfere in space is avoided, and the limiting ejector rod assembly connected to the expansion section 3 is always abutted to the cambered surface of the limiting plate 4, so that the limiting ejector rod assembly does not interfere in space with the female ball socket 1 in the swinging process of the expansion section 3.
In conclusion, the ball socket spray pipe relieves the technical problem that the limiting mechanism in the prior art occupies a large space outside the ball socket spray pipe.
Preferably, referring to fig. 3, in this embodiment, the arc plate portion includes an inner arc surface close to the arc center and an outer arc surface far away from the arc center, and the limiting ejector rod assembly is disposed on one side of the arc plate portion far away from the arc center and abuts against the outer arc surface.
Such setting, the spacing ejector pin subassembly of first aspect can not occupy the space between arc board portion and the male ball head 2 to the installation of spare part in the space between arc board portion and the male ball head 2 is in coordination, and the second aspect makes spacing ejector pin subassembly expose outside, in order to directly perceivedly observe the butt condition of spacing ejector pin subassembly and arc board portion.
Preferably, referring to fig. 2 and 3, in the present embodiment, the expansion section 3 is provided with a mounting protrusion 31, and the mounting protrusion 31 is provided with a mounting screw hole; the limiting ejector rod assembly comprises a limiting screw rod 51, one end of the limiting screw rod 51 is rotatably connected with a limiting head 52, the other end of the limiting screw rod is rotatably connected with a mounting screw hole, and the limiting head 52 is abutted to the cambered surface.
The limiting head 52 is connected to the expansion section 3 through the limiting screw rod 51, and the position of the limiting screw rod 51 in the screwing position of the mounting screw hole is changed by rotating the limiting screw rod 51, so that the position of the limiting head 52 relative to the limiting plate 4 is convenient to adjust; and the position of the limiting head 52 is adjusted by rotating the limiting head 52 to change the screwing position of the limiting head 52 on the limiting screw 51, so that the position of the limiting head 52 is convenient to finely adjust.
Preferably, referring to fig. 3, in the present embodiment, the limit screw 51 includes a first threaded section and a second threaded section, the threads of the first threaded section and the threads of the second threaded section are opposite in rotation direction, the limit head 52 is screwed to the first threaded section, and the second threaded section is screwed to the mounting screw hole; the limiting ejector rod assembly further comprises a first locking nut 53 and a second locking nut 54, wherein the first locking nut 53 is screwed on the first thread section and is abutted against the limiting head 52; the second lock nut 54 is screwed to the second threaded section, is located on a side of the mounting protrusion 31 away from the limiting head 52, and abuts against the mounting protrusion 31.
Optionally, the threads of the first thread segment are left-handed threads and the threads of the second thread segment are right-handed threads; or the threads of the first thread section are right-handed threads, and the threads of the second thread section are left-handed threads.
After the installation position of the positioning head 52 is adjusted, the first lock nut 53 is rotated to bring the first lock nut 53 into contact with the positioning head 52 to lock the position of the positioning head 52 relative to the positioning screw 51, and the second lock nut 54 is rotated to bring the second lock nut 54 into contact with the installation protrusion 31 to lock the position of the positioning screw 51 relative to the installation protrusion 31. In summary, the spacing ram assembly is more firmly and reliably connected to the expansion section 3 by such arrangement.
Preferably, the limiting plate 4 and the limiting head 52 are both metal machined parts.
Preferably, referring to fig. 3, in the present embodiment, the female ball socket 1 includes a female ball housing 11, a first inner cavity is disposed inside the female ball housing 11, and a female ball heat insulation layer 12 is disposed on one side of the female ball housing 11.
The male ball head 2 comprises a male ball housing 21, the male ball housing 21 is arranged on one side of the female ball housing 11 close to the first inner cavity, and a male ball heat insulation layer 22 is arranged on one side of the male ball housing 21 far away from the female ball housing 11.
The expansion section 3 comprises an expansion shell 32 provided with a spray channel, and an expansion heat insulation layer 33 is arranged on one side of the expansion shell 32 close to the spray channel; the female ball heat insulating layer 12 is disposed on a side of the female ball housing 11 near the first end, and the expansion housing 32 is connected to the second end of the Yang Qiu housing 21.
The first end is close to the combustion chamber, and the combustion chamber is used for being connected with the female ball socket 1, so that the female ball heat insulation layer 12 is arranged on one side of the female ball shell 11 close to the first end and is used for insulating heat from the female ball shell 11; high temperature, high pressure, high velocity fuel gas in the combustion chamber can be injected through the male bulb 2 from the open end of the expansion section 3, so the male bulb insulation layer 22 serves to insulate the male bulb housing 21 from heat and the expansion insulation layer 33 serves to insulate the expansion housing 32 from heat.
Alternatively, the female ball heat insulating layer 12 is fixed to the female ball housing 11 by adhesion, the male ball heat insulating layer 22 is fixed to the male ball housing 21 by adhesion, and the expansion heat insulating layer 33 is fixed to the expansion housing 32 by adhesion.
Optionally, the female ball housing 11, the male ball housing 21 and the expansion housing 32 are formed by metal piece machine-addition type, and the expansion housing 32 is connected with the male ball housing 21 by radial screws or clamping block structures.
Preferably, in this embodiment, the female ball insulation layer 12, the male ball insulation layer 22 and the expansion insulation layer 33 are fiber cloth/phenolic composite wound members, high silica/phenolic molded members, carbon/carbon composite members or high silica cloth and phenolic wound members. The above material is a nonmetallic material excellent in heat resistance and ablation performance, and the heat insulating layer is formed by machine-adding the above material.
Preferably, referring to fig. 3, in this embodiment, the ball socket nozzle further includes a torsion-resistant mechanism 6 sleeved outside the male ball head 2; along the extending direction of the first inner cavity, the torsion-resistant mechanism 6 comprises a third end and a fourth end which are oppositely arranged, wherein the third end is connected with the female ball socket 1, and the fourth end is connected with the male ball head 2.
The torsion resistance of the torsion mechanism 6 reduces or avoids circumferential deflection of the male ball head 2 of the ball socket nozzle during the swinging of the expansion section 3, so as to increase the torsion resistance of the ball socket nozzle during the full-axis swinging process.
Preferably, in this embodiment, the torsion-resistant mechanism 6 is a cloth-sandwiched rubber member.
The cloth-sandwiched rubber is a rubber composite material, and the high-strength adhesive tape is compounded in the rubber interlayer, so that the rubber plate has very high tensile strength and very high pressure-bearing capacity. By the arrangement, the torsion-resistant mechanism 6 for clamping the rubber piece can play a role in preventing the whole structure from being twisted when the ball socket spray pipe swings.
Example two
The second embodiment provides a jet propulsion device, where the jet propulsion device includes the ball socket nozzle of the first embodiment, and the technical features of the ball socket nozzle disclosed in the first embodiment are also applicable to the first embodiment, and the technical features of the ball socket nozzle disclosed in the first embodiment are not repeated.
The jet propulsion device provided in this embodiment includes two servo actuators and the above-mentioned ball socket nozzle, and one servo actuator is connected in the female ball socket 1 of ball socket nozzle, and another servo actuator is connected in expansion section 3, can drive expansion section 3 and swing relative female ball socket 1.
The jet propulsion device further relieves the technical problem that a limiting mechanism in the prior art occupies a large space outside the ball socket spray pipe.
Preferably, referring to fig. 3, in this embodiment, the female socket 1 is provided with a first mounting lug 7 for connecting to a servo actuator, and the expansion section 3 is provided with a second mounting lug 8 for connecting to a servo actuator.
In this arrangement, one servo actuator is connected to the female socket 1 by a first mounting lug 7 and the other servo actuator is connected to the expansion section 3 by a second mounting lug 8.
Optionally, the first mounting lug 7 is a metal machined part, and is used as a front mounting interface of the servo actuator, and the first mounting lug 7 is fixed on the female ball shell 11 through a screw. The second mounting lug 8 is a metal machining part and serves as a rear mounting interface of the servo actuator, and the second mounting lug is fixed on the expansion shell 32 through screws.
The jet propulsion device works as follows: the two servo actuators are respectively arranged on the first mounting support lug 7 and the second mounting support lug 8 at 90 degrees, under the action of the servo actuators, the ball socket spray pipe realizes full-axis swing, and the two servo actuators refer to fig. 4, which is a schematic diagram of swing of the expansion section 3 in a first direction, and fig. 5, which is a schematic diagram of swing of the expansion section 3 in a second direction, wherein the first direction is opposite to the second direction. Wherein, the reliability of the initial seal of ball socket spray pipe is guaranteed to stop separating and leading to the leakproofness to destroy between male ball casing 21 and the female ball casing 11, and torsion-resistant mechanism 6 guarantees that ball socket spray pipe does not take place the hoop when the swing.
The jet propulsion device of this embodiment has the advantages of the ball and socket jet of embodiment one, which have already been described in detail in embodiment one and are not repeated here.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The ball socket spray pipe is characterized by comprising a female ball socket (1), a Yang Qiutou (2), an expansion section (3) and a limiting mechanism, wherein the female ball socket (1) is provided with a first inner cavity, and the Yang Qiutou (2) is arranged on one side, close to the first inner cavity, of the female ball socket (1);
along the extending direction of the first inner cavity, the Yang Qiutou (2) comprises a first end and a second end which are oppositely arranged, the expansion section (3) is connected with the second end of the Yang Qiutou (2), and the female ball socket (1) is arranged between the first end and the second end;
one surface of the female ball socket (1) close to the Yang Qiutou (2) is a first spherical surface, one surface of the Yang Qiutou (2) close to the female ball socket (1) is a second spherical surface, the first spherical surface and the second spherical surface share the spherical center, and the spherical center is arranged on one side of the first inner cavity close to the first end;
the limiting mechanism comprises a limiting plate (4) connected to the female ball socket (1) and a limiting ejector rod assembly connected to the expansion section (3), the limiting plate (4) comprises an arc plate part with an arc surface, the arc center of the arc surface is concentric with the ball center, the limiting ejector rod assembly is abutted to the arc surface, and the limiting ejector rod assembly is abutted to the arc surface of the arc plate part, so that the limiting ejector rod assembly moves along the arc surface of the limiting plate (4) to form an arc movement track;
the expansion section (3) is provided with a mounting protrusion, and a mounting screw hole is formed in the mounting protrusion;
the limiting ejector rod assembly comprises a limiting screw rod (51), one end of the limiting screw rod (51) is rotatably connected with a limiting head (52), the other end of the limiting screw rod is rotatably connected with the mounting screw hole, and the limiting head (52) is abutted to the cambered surface;
the limiting screw (51) comprises a first thread section and a second thread section, the threads of the first thread section and the threads of the second thread section are opposite in rotation direction, the limiting head (52) is screwed on the first thread section, and the second thread section is screwed on the mounting screw hole;
the limiting ejector rod assembly further comprises a first locking nut (53) and a second locking nut (54), wherein the first locking nut (53) is screwed on the first threaded section and is abutted against the limiting head (52); the second locking nut (54) is screwed on the second thread section, is positioned on one side of the mounting protrusion away from the limiting head (52), and is abutted against the mounting protrusion;
the ball socket spray pipe also comprises a torsion-resistant mechanism (6) sleeved outside the Yang Qiutou (2);
along the extending direction of the first inner cavity, the torsion-resistant mechanism (6) comprises a third end and a fourth end which are oppositely arranged, the third end is connected with the female ball socket (1), and the fourth end is connected with the Yang Qiutou (2).
2. The ball socket nozzle of claim 1, wherein the arc plate portion comprises an intrados surface proximate to the arc center and an extrados surface distal to the arc center, and the spacing ram assembly is disposed on a side of the arc plate portion distal to the arc center and abuts against the extrados surface.
3. The ball socket nozzle according to claim 1, characterized in that the female ball socket (1) comprises a female ball housing (11), the first inner cavity is arranged inside the female ball housing (11), and a female ball heat insulation layer (12) is arranged on one side of the female ball housing (11);
the Yang Qiutou (2) comprises a male ball shell (21), the Yang Qiu shell (21) is arranged on one side, close to the first inner cavity, of the female ball shell (11), and a male ball heat insulation layer (22) is arranged on one side, far away from the female ball shell (11), of the Yang Qiu shell (21);
the expansion section (3) comprises an expansion shell (32) provided with a spray channel, and an expansion heat insulation layer (33) is arranged on one side, close to the spray channel, of the expansion shell (32);
the female ball heat insulation layer (12) is arranged on one side, close to the first end, of the female ball shell (11), and the expansion shell (32) is connected to the second end of the male ball shell (21).
4. A ball socket lance as set forth in claim 3 wherein the female ball insulation (12), the male ball insulation (22) and the expansion insulation (33) are fiber cloth/phenolic composite wraps, high silica/phenolic moldings, carbon/carbon composites or high silica cloth and phenolic wraps.
5. The ball socket nozzle according to claim 4, characterized in that the torsion mechanism (6) is a cloth-clamped rubber piece.
6. A jet propulsion device, characterized in that it comprises two servo-actuators and a socket nozzle according to any one of claims 1-5, one end of the servo-actuator being connected to the female socket (1) of the socket nozzle, the other end of the servo-actuator being connected to the expansion section (3).
7. Jet propulsion device according to claim 6, characterized in that the female socket (1) is provided with a first mounting lug (7) for connection to a servo actuator, and the expansion section (3) is provided with a second mounting lug (8) for connection to a servo actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310107551.7A CN115822819B (en) | 2023-02-14 | 2023-02-14 | Ball socket spray pipe and jet propulsion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310107551.7A CN115822819B (en) | 2023-02-14 | 2023-02-14 | Ball socket spray pipe and jet propulsion device |
Publications (2)
| Publication Number | Publication Date |
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| CN115822819A CN115822819A (en) | 2023-03-21 |
| CN115822819B true CN115822819B (en) | 2023-07-18 |
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| CN202310107551.7A Active CN115822819B (en) | 2023-02-14 | 2023-02-14 | Ball socket spray pipe and jet propulsion device |
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Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1189052A (en) * | 1968-01-09 | 1970-04-22 | Lockheed Aircraft Corp | Flexible Joint Means |
| USH1381H (en) * | 1991-03-14 | 1994-12-06 | Leavitt; Keith H. | Omnidirectional flexible joint for rocket nozzles |
| JP4001667B2 (en) * | 1997-12-24 | 2007-10-31 | 株式会社アイ・エイチ・アイ・エアロスペース | Rocket thrust direction control device |
| JP5303360B2 (en) * | 2009-05-26 | 2013-10-02 | 株式会社Ｉｈｉエアロスペース | Ball joint device |
| CN103867341B (en) * | 2012-12-14 | 2016-07-13 | 上海新力动力设备研究所 | A kind of small-scale solid rocket motor ball-and-socket gimbaled nozzle space vector torsion resistant device |
| JP6815203B2 (en) * | 2017-01-11 | 2021-01-20 | 株式会社Ｉｈｉエアロスペース | Ball joint nozzle |
| CN112412662B (en) * | 2020-11-17 | 2021-11-09 | 哈尔滨工程大学 | Combined thrust vectoring nozzle system and projectile body with same |
| CN214410499U (en) * | 2021-04-09 | 2021-10-15 | 重庆零壹空间科技集团有限公司 | Swinging spray pipe structure for rocket model |
| CN114658568B (en) * | 2022-04-19 | 2024-03-29 | 湖北三江航天江北机械工程有限公司 | Ball socket nozzle with anti-twist |
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2023
- 2023-02-14 CN CN202310107551.7A patent/CN115822819B/en active Active
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| CN115822819A (en) | 2023-03-21 |
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