CN114922742A - Motor-regulated self-impact nozzle - Google Patents
Motor-regulated self-impact nozzle Download PDFInfo
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- CN114922742A CN114922742A CN202210650859.1A CN202210650859A CN114922742A CN 114922742 A CN114922742 A CN 114922742A CN 202210650859 A CN202210650859 A CN 202210650859A CN 114922742 A CN114922742 A CN 114922742A
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- movable plunger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/44—Feeding propellants
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02K—JET-PROPULSION PLANTS
- F02K9/00—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof
- F02K9/42—Rocket-engine plants, i.e. plants carrying both fuel and oxidant therefor; Control thereof using liquid or gaseous propellants
- F02K9/60—Constructional parts; Details not otherwise provided for
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a motor-regulated self-impact nozzle, which relates to the technical field of liquid rocket engines and comprises: an outer sleeve, a moving plunger, a central pintle and a motor member; the movable plunger is arranged in the liquid collection cavity in the outer sleeve, the first liquid outlet flow channel is formed between the outer wall of the movable plunger and the hole wall of the central hole in the bottom of the outer sleeve, the central pintle is arranged in the through cavity of the movable plunger, the second liquid outlet flow channel is formed between the flow blocking end face in the bottom of the central pintle and the bottom face of the movable plunger, and propellants sprayed by the first liquid outlet flow channel and the second liquid outlet flow channel collide with each other, so that the liquid propellants are well atomized.
Description
Technical Field
The invention relates to the technical field of liquid rocket engines, in particular to a self-impact nozzle adjusted by a motor.
Background
The atomization and mixing of propellant components of liquid rocket engines are accomplished by one or more nozzles constituting an injector, each nozzle supplies a certain flow of propellant to a combustion chamber and realizes atomization and mixing. Depending on the design of the nozzles, they can be generally divided into straight-flow, centrifugal and straight-flow-centrifugal nozzles. Different nozzle structural forms are suitable for different propellant types and power circulation modes, and have great influence on the engine performance such as combustion stability, combustion efficiency, thrust chamber cooling and the like. Compare in the straight-flow nozzle, centrifugal nozzle can produce great spray cone angle usually under the centrifugal force effect, is favorable to accelerating atomization and evaporation process to under the condition of nozzle rational arrangement, more change collision each other between the adjacent spray cone and mix, can promote combustion efficiency effectively, shorten the burning time lag. However, the centrifugal nozzle has a complicated structure, a large size and a small flow density, and requires a large head area for arranging the nozzles. In order to reduce the size of the burner head, to shorten the jet distance and to increase the atomization and mixing effect, it is possible to use a flow-through nozzle in which different streams of fluid impinge on one another, and a flow-through nozzle which supplies a single propellant in this form is known as a self-tapping nozzle.
For liquid rocket engines with variable thrust requirements, it is often necessary to adjust the engine thrust by varying the supply flow of propellant.
However, after the existing self-striking nozzle is designed and processed, the flow area and the flow coefficient of the nozzle cannot be adjusted by changing the internal structure size of the nozzle, which means that when the flow of the nozzle is reduced, the pressure drop at the outlet of the nozzle is also greatly reduced, so that the atomizing capacity of the nozzle is rapidly deteriorated, the combustion efficiency of a combustion chamber is reduced, and even severe conditions such as flameout are caused.
Disclosure of Invention
The invention aims to provide a self-impact nozzle adjusted by a motor, so as to solve the technical problem that the atomizing capacity is influenced because the flow passage area of the nozzle cannot be changed by the conventional self-impact nozzle in the prior art.
In a first aspect, the present invention provides a motor-regulated self-striking nozzle, comprising: an outer sleeve, a moving plunger, a central pintle and a motor member;
a liquid collecting cavity is formed in the outer sleeve, the movable plunger is arranged in the liquid collecting cavity, a central hole is formed in the bottom of the outer sleeve, a first liquid outlet flow channel for vertically spraying the propellant is formed between the outer wall of the movable plunger and the hole wall of the central hole, and the liquid collecting cavity is communicated with the first liquid outlet flow channel;
the middle part of the movable plunger is provided with a through cavity, the central pintle is arranged in the through cavity, the bottom of the central pintle is provided with a flow-blocking end surface positioned below the bottom of the movable plunger, a second liquid outlet flow channel for transversely spraying propellant is formed between the flow-blocking end surface and the movable plunger, and the liquid collection cavity is communicated with the second liquid outlet flow channel;
the motor component is in transmission connection with the movable plunger, and the motor component is configured to be capable of driving the movable plunger to move in the liquid collection cavity so as to adjust liquid outlet widths of the first liquid outlet flow channel and the second liquid outlet flow channel simultaneously.
In an alternative embodiment of the method of the present invention,
the motor-regulated self-impact nozzle further comprises a head cover component;
the cover member covers the outer sleeve, the cover member is connected to the central pintle, and one end of the movable plunger is connected to the motor member through the cover member.
In an alternative embodiment of the method of the invention,
the sidewall of the outer sleeve has a first plurality of radial through holes along the radial direction of the outer sleeve, and liquid propellant enters the liquid collecting cavity through the first plurality of radial through holes;
the inner wall of the outer sleeve is provided with a connecting threaded section, and the head cover component is connected with the connecting threaded section;
the bottom of the outer sleeve extends outwards to form a connecting edge, and a fixing hole used for being connected with the combustion chamber is formed in the connecting edge.
In an alternative embodiment of the method of the present invention,
the side wall of the moving plunger is provided with a plurality of second radial through holes along the radial direction of the moving plunger, and the liquid collecting cavity is communicated with the through cavity through the second radial through holes;
the top of the movable plunger is provided with a head rib, a rib through hole is formed in the head rib, and the head rib is connected with the motor component through the rib through hole;
the outer wall of the movable plunger is provided with a first annular groove which is used for installing a first O-shaped ring.
In an alternative embodiment of the method of the present invention,
the motor-regulated self-impact nozzle also comprises a fixing nut;
the fixing nut is positioned on the top of the head cover component and is connected with the top of the central pintle.
In an alternative embodiment of the method of the present invention,
the top of the central pintle is provided with a pintle thread section, and the pintle thread section is connected with the fixing nut;
and along the radial direction of the central pintle, the side wall of the central pintle is provided with a plurality of third radial through holes, the bottom of the central pintle is provided with a flow passage among grid plates, and propellant in the liquid collection cavity enters the second liquid outlet flow passage along the second radial through holes, the third radial through holes and the flow passage among the grid plates.
In an alternative embodiment of the method of the present invention,
the outer wall of the head cover component is provided with a head cover threaded section which is connected with the connecting threaded section;
the outer wall of the head cover component is provided with a second annular groove which is used for installing a second O-shaped ring;
the top of the head cover member has a motor screw hole through which the head cover member is connected with the motor member.
In an alternative embodiment of the method of the present invention,
the middle part of the head cover component is provided with a central through hole, and the top part of the central pintle passes through the central through hole to be connected with the fixed nut;
the head cover member has a square through hole at the top thereof, and the head rib is connected to the motor member through the square through hole.
In an alternative embodiment of the method of the invention,
the motor component comprises a driving motor and a motor fixing frame;
the driving motor is fixed on the motor fixing frame, and the motor fixing frame is connected with the head cover component.
In an alternative embodiment of the method of the present invention,
the motor fixing frame is provided with an upper plate and a lower plate which are connected with each other, and the middle part of the upper plate is provided with a driving through hole for the driving end of the driving motor to extend into;
the upper plate is provided with a motor mounting hole for fixing the driving motor;
the lower plate is provided with head cover coupling holes for coupling the head cover member.
The invention provides a motor-regulated self-impact nozzle, which comprises: an outer sleeve, a moving plunger, a central pintle and a motor member; the movable plunger is arranged in the liquid collection cavity in the outer sleeve, a first liquid outlet flow channel is formed in a gap between the outer wall of the movable plunger and the hole wall of the central hole in the bottom of the outer sleeve, the central pintle is arranged in the through cavity of the movable plunger, a second liquid outlet flow channel is formed between the flow blocking end face in the bottom of the central pintle and the bottom face of the movable plunger, and propellants sprayed by the first liquid outlet flow channel and the second liquid outlet flow channel collide with each other, so that the liquid propellants are better atomized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a cross-sectional view of the overall structure of a motor-regulated self-striking nozzle according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of an outer sleeve of a motor-regulated self-impacting nozzle in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of an outer sleeve of a motor-regulated self-striking nozzle according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a moving plunger in a motor-regulated self-striking nozzle, according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a motor-regulated self-impacting nozzle with a moving plunger according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of a center pintle in a motor-regulated self-striking nozzle according to an embodiment of the present invention;
FIG. 7 is a sectional view of a head cover member of a self-striking nozzle with a motor regulator according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of a head cover member of a motor-regulated self-striking nozzle according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a motor fixing frame in a motor-regulated self-impact nozzle according to an embodiment of the present invention.
Icon: 1-an outer sleeve; 101-a first radial through hole; 102-a central aperture; 103-connecting thread segments; 104-a fixation hole; 2-moving the plunger; 201-a second radial through hole; 202-head ribs; 203-rib through holes; 204-through cavity; 205 — a first annular groove; 3-central pintle; 301-pintle thread segment; 302-a third radial through hole; 303-flow passages between grid plates; 304-a flow-impeding end face; 4-a head cover member; 401-head cap thread segment; 402-a second annular groove; 403-motor threaded hole; 404-central through hole; 405-a square through hole; 5, a motor fixing frame; 501-driving through holes; 502-motor mounting holes; 503-head cover connection hole; 6-a first O-ring; 7-a second O-ring; 8-fixing the nut.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings or orientations or positional relationships that the present product is conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments and features of the embodiments described below can be combined with each other without conflict.
For liquid rocket engines with variable thrust requirements, it is often necessary to adjust the engine thrust by varying the supply flow of propellant. While the prior self-impact nozzle is designed and processed,the flow area and the flow coefficient of the nozzle can not be adjusted by changing the internal structure size of the nozzle, and the mass flow formula of the nozzle is obtained
This means that when the nozzle flow is reduced, the pressure drop at the nozzle outlet is also greatly reduced, which results in a sharp deterioration of the atomizing capability of the nozzle, a reduction in the combustion efficiency of the combustor, and even a severe condition such as flameout.
In view of the above, as shown in fig. 1, the present embodiment provides a motor-regulated self-striking nozzle, including: an outer sleeve 1, a moving plunger 2, a central pintle 3 and a motor member; a liquid collecting cavity is formed in the outer sleeve 1, the movable plunger 2 is arranged in the liquid collecting cavity, a central hole 102 is formed in the bottom of the outer sleeve 1, a first liquid outlet flow channel for vertically spraying the propellant is formed between the outer wall of the movable plunger 2 and the hole wall of the central hole 102, and the liquid collecting cavity is communicated with the first liquid outlet flow channel; the middle part of the movable plunger 2 is provided with a through cavity 204, the central pintle 3 is arranged in the through cavity 204, the bottom of the central pintle 3 is provided with a flow blocking end face 304 positioned below the bottom of the movable plunger 2, a second liquid outlet flow channel for transversely spraying the propellant is formed between the flow blocking end face 304 and the movable plunger 2, and the liquid collection cavity is communicated with the second liquid outlet flow channel; the motor component is in transmission connection with the movable plunger 2, and the motor component is configured to be capable of driving the movable plunger 2 to move in the liquid collection cavity so as to adjust the liquid outlet widths of the first liquid outlet flow channel and the second liquid outlet flow channel simultaneously.
The self-impact nozzle is adjusted to motor that this embodiment provided includes: an outer sleeve 1, a moving plunger 2, a central pintle 3 and a motor member; the movable plunger 2 is arranged in the liquid collecting cavity in the outer sleeve 1, a first liquid outlet flow channel is formed by a gap between the outer wall of the movable plunger 2 and the hole wall of the central hole 102 at the bottom of the outer sleeve 1, the central pintle 3 is arranged in the through cavity 204 of the movable plunger 2, a second liquid outlet flow channel is formed between the flow blocking end face 304 at the bottom of the central pintle 3 and the bottom surface of the movable plunger 2, and propellants sprayed by the first liquid outlet flow channel and the second liquid outlet flow channel collide with each other, so that the liquid propellants are better atomized, and when the flow of the liquid propellant changes, the motor component can drive the movable plunger 2 to move in the liquid collecting cavity, so that the active adjustment of the first liquid outlet flow channel and the second liquid outlet flow channel is realized, the good atomization performance is ensured, and the technical problem that the atomization capacity is influenced because the flow channel area of the nozzle cannot be changed by the conventional self-impact nozzle in the prior art is solved.
Regarding the structure and shape of the outer sleeve 1, in particular:
as shown in fig. 2 and 3, the side wall of the outer sleeve 1 is provided with a plurality of first radial through holes 101, the first radial through holes 101 are along the radial direction of the outer sleeve 1, and the external liquid propellant enters the liquid collecting cavity inside the outer sleeve 1 along the plurality of first radial through holes 101; a central hole 102 is formed in the center of the bottom of the outer sleeve 1, the movable plunger 2 is located in the liquid collecting cavity, a first liquid outlet flow channel is formed between the outer wall of the movable plunger 2 and the hole wall of the central hole 102, and liquid propellant in the liquid collecting cavity is sprayed out along the first liquid outlet flow channel; the top inner wall of the outer sleeve 1 is provided with a connecting threaded section 103 for threaded connection with the head cover member 4; the outer wall of the bottom of the outer sleeve 1 extends outwards to form a connecting edge, and a plurality of fixing holes 104 are formed in the connecting edge and used for being tightly pressed, fixed and sealed with the combustion chamber through bolts.
Regarding the structure and shape of the moving plunger 2, specifically:
as shown in fig. 4 and 5, the movable plunger 2 is a key movable component in this embodiment, a plurality of second radial through holes 201 are formed in a side wall of the movable plunger 2, and the second radial through holes 201 are arranged along a radial direction of the movable plunger 2 and are used for supplying the liquid propellant to a flow passage in the central pintle 3; the top of the movable plunger 2 is provided with a head rib 202, the head rib 202 passes through the head cover member 4 to extend out, and the head rib 202 is provided with a rib through hole 203 which is used for being fixedly connected with the driving end of the motor member, so that the movable plunger 2 can do controllable axial movement along with the motor member; the middle part of the movable plunger 2 penetrates through to form a through cavity 204, and the central pintle 3 is inserted into the through cavity 204; the outer wall of the movable plunger 2 is provided with a first annular groove 205 for placing a first sealing ring to play a role in sealing, so that the propellant is prevented from flowing backwards above the movable plunger 2; an annular first liquid outlet flow channel with the width changing along with the axial displacement change of the movable plunger 2 is formed between the movable plunger 2 and the bottom center hole 102 of the outer sleeve 1, and one path of liquid propellant is sprayed out of the first liquid outlet flow channel.
In addition, the bottom outer wall of the movable plunger 2 is in the vertical direction, and the liquid propellant flowing out of the first liquid outlet channel flows along the bottom vertical outer wall of the movable plunger 2, so that the liquid propellant is sprayed out in the vertical direction.
Regarding the combination and shape of the central pintle 3, in particular:
as shown in fig. 6, the central pintle 3 is an important component for realizing self-striking of two paths of liquid propellants, the top of the central pintle 3 is provided with a pintle thread section 301 for screwing the fixing nut 8 to fix the central pintle 3 with the head cover member 4, so that the central pintle 3 does not displace in the nozzle working process, and the flow passage area of the second liquid outlet flow passage and the flow passage 303 between the grid plates are determined only by the axial displacement of the movable plunger 2; the side wall of the central pintle 3 is provided with a plurality of third radial through holes 302, the third radial through holes 302 are arranged along the radial direction of the central pintle 3, the bottom of the central pintle 3 is provided with a plurality of inter-grid-plate flow channels 303, and after flowing in along the second radial through holes 201, the liquid propellant flows into the third radial through holes 302 under the action of pressure difference and is further downwards ejected from the inter-grid-plate flow channels 303; the bottom of the central pintle 3 is provided with a flow resisting end face 304, and when the liquid propellant is sprayed out from the flow channel 303 between the grid plates, the flow resisting end face 304 plays a role in limiting the flow direction of the propellant and enabling the propellant to be crushed primarily under the impact action.
In addition, because the flow blocking end face 304 is horizontally arranged, the liquid propellant sprayed from the second liquid outlet flow channel moves along the horizontal direction, so that the liquid propellant sprayed from the first liquid outlet flow channel and the second liquid outlet flow channel can collide with each other, and atomization is realized.
Regarding the structure and shape of the head cover member 4, specifically:
as shown in fig. 7 and 8, the main function of the head cover member 4 is to fix the central pintle 3 and the motor fixing frame 5, and to extend the head rib 202 of the movable plunger 2, so that the driving end of the motor can be connected with the movable plunger 2, and only the movable plunger 2 is displaced during the operation of each part of the nozzle;
the outer wall of the head cover component 4 is provided with a head cover thread section 401, the head cover thread section 401 is connected with the connecting thread section 103, and the head cover component 4 is fixed on the outer sleeve 1; a second annular groove 402 is formed in the outer wall of the head cover member 4, and a second O-ring 7 is installed in the second annular groove 402 for sealing; the top of the head cover component 4 is provided with a motor threaded hole 403 for fixedly connecting with the motor fixing frame 5; a central through hole 404 is arranged at the central position of the head cover component 4, and the central pintle 3 extends out of the central through hole 404 and is fixed with the fixed nut 8; the head cover member 4 is provided with a plurality of square through holes 405, and the head rib 202 of the moving plunger 2 is protruded from the square through holes 405 to be connected to the moving part of the motor through a rib through hole 203 provided on the head rib 202.
Regarding the shape and structure of the motor member, specifically:
as shown in fig. 9, the motor member includes a driving motor and a motor fixing frame 5, the driving motor is mounted on the motor fixing frame 5, the motor fixing frame 5 is provided with a driving through hole 501, and a driving end of the driving motor passes through the driving through hole 501 to be connected with the head rib 202 on the movable plunger 2, so that the driving motor can pull or push the movable plunger 2 to move axially; a motor mounting hole 502 is formed in the motor fixing frame 5 and used for fixedly mounting a driving motor; the motor fixing frame 5 is provided with a head cover connecting hole 503, and a bolt passes through the head cover connecting hole 503 and extends into the motor threaded hole 403 to fix the motor fixing frame 5 on the head cover component 4.
The first O-ring 6 and the second O-ring 7 are used for sealing between the outer sleeve 1 and the movable plunger 2 and between the outer sleeve 1 and the head cover member 4, so that the phenomenon that the movable plunger 2 is not smooth in movement or has safety accidents due to reverse leakage of liquid propellant is prevented, and the effects of improving the stability and the safety of the system are achieved.
The motor-regulated self-impact nozzle provided by the embodiment uses the motor component to control the size of the flow passage area and the flow coefficient of the nozzle, and has reliable and accurate actuation and good repeatability; a relation curve of the position of the movable plunger 2 and the pressure drop of the nozzle can be obtained through a cold flow calibration test, and the motor is driven to enable the movable plunger 2 to be in a proper position under the working conditions of different propellant flow rates, so that the atomizing effect of the nozzle is ensured; the drive motor may be driven on-line by a pre-programmed or computer so that the position of the moving plunger 2 can be dynamically adjusted to follow the propellant flow changes during the test.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A motor regulated self-impact nozzle, comprising: an outer sleeve (1), a moving plunger (2), a central pintle (3) and a motor member;
a liquid collecting cavity is formed in the outer sleeve (1), the movable plunger (2) is arranged in the liquid collecting cavity, a central hole (102) is formed in the bottom of the outer sleeve (1), a first liquid outlet flow channel for vertically spraying propellant is formed between the outer wall of the movable plunger (2) and the hole wall of the central hole (102), and the liquid collecting cavity is communicated with the first liquid outlet flow channel;
the middle part of the movable plunger (2) is provided with a through cavity (204), the central pintle (3) is arranged in the through cavity (204), the bottom of the central pintle (3) is provided with a flow blocking end surface (304) positioned below the bottom of the movable plunger (2), a second liquid outlet flow channel for transversely spraying propellant is formed between the flow blocking end surface (304) and the movable plunger (2), and the liquid collection cavity is communicated with the second liquid outlet flow channel;
the motor component is in transmission connection with the movable plunger (2), and the motor component is configured to be capable of driving the movable plunger (2) to move in the liquid collection cavity so as to adjust liquid outlet widths of the first liquid outlet channel and the second liquid outlet channel simultaneously.
2. Motor-regulated self-striking nozzle according to claim 1,
the motor-regulated self-impact nozzle also comprises a head cover component (4);
the head cover component (4) is covered on the outer sleeve (1), the head cover component (4) is connected with the central pintle (3), and one end of the movable plunger (2) passes through the head cover component (4) to be connected with the motor component.
3. Motor regulated self-striking nozzle according to claim 2,
the side wall of the outer sleeve (1) has a plurality of first radial through holes (101) along the radial direction of the outer sleeve (1), and liquid propellant enters the liquid collecting cavity through the plurality of radial through holes;
the inner wall of the outer sleeve (1) is provided with a connecting threaded section (103), and the head cover component (4) is connected with the connecting threaded section (103);
the bottom of the outer sleeve (1) extends outwards to form a connecting edge, and a fixing hole (104) used for being connected with a combustion chamber is formed in the connecting edge.
4. Motor-regulated self-striking nozzle according to claim 3,
along the radial direction of the moving plunger (2), the side wall of the moving plunger (2) is provided with a plurality of second radial through holes (201), and the liquid collecting cavity is communicated with the through cavity (204) through the plurality of second radial through holes (201);
the top of the movable plunger (2) is provided with a head rib (202), a rib through hole (203) is formed in the head rib (202), and the head rib (202) is connected with the motor component through the rib through hole (203);
the outer wall of the moving plunger (2) is provided with a first annular groove (205), and the first annular groove (205) is used for installing a first O-shaped ring (6).
5. Motor regulated self-striking nozzle according to claim 4,
the motor-regulated self-impact nozzle also comprises a fixing nut (8);
the fixing nut (8) is located on the top of the head cover member (4), and the fixing nut (8) is connected with the top of the central pintle (3).
6. Motor-regulated self-striking nozzle according to claim 5,
the top of the central pintle (3) is provided with a pintle thread section (301), and the pintle thread section (301) is connected with the fixing nut (8);
along the radial direction of the central pintle (3), the side wall of the central pintle (3) is provided with a plurality of third radial through holes (302), the bottom of the central pintle (3) is provided with inter-grid-plate flow channels (303), and propellant in the liquid collecting cavity enters the second liquid outlet flow channel along the second radial through holes (201), the third radial through holes (302) and the inter-grid-plate flow channels (303).
7. Motor regulated self-striking nozzle according to claim 6,
the outer wall of the head cover component (4) is provided with a head cover threaded section (401), and the head cover threaded section (401) is connected with the connecting threaded section (103);
the outer wall of the head cover component (4) is provided with a second annular groove (402), and the second annular groove (402) is used for installing a second O-shaped ring (7);
the top of the head cover component (4) is provided with a motor threaded hole (403), and the head cover component (4) is connected with the motor component through the motor threaded hole (403).
8. Motor regulated self-striking nozzle according to claim 7,
the middle part of the head cover component (4) is provided with a central through hole (404), and the top of the central pintle (3) passes through the central through hole (404) to be connected with the fixed nut (8);
the top of the head cover component (4) is provided with a square through hole (405), and the head rib (202) passes through the square through hole (405) to be connected with the motor component.
9. Motor regulated self-striking nozzle according to claim 2,
the motor component comprises a driving motor and a motor fixing frame (5);
the driving motor is fixed on the motor fixing frame (5), and the motor fixing frame (5) is connected with the head cover component (4).
10. The motor-regulated self-striking nozzle according to claim 9,
the motor fixing frame (5) is provided with an upper plate and a lower plate which are connected with each other, and the middle part of the upper plate is provided with a driving through hole (501) for the driving end of the driving motor to extend into;
the upper plate is provided with a motor mounting hole (502) for fixing the driving motor;
the lower plate is provided with a head cover connection hole (503) for connecting the head cover member (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210650859.1A CN114922742A (en) | 2022-06-09 | 2022-06-09 | Motor-regulated self-impact nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210650859.1A CN114922742A (en) | 2022-06-09 | 2022-06-09 | Motor-regulated self-impact nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114922742A true CN114922742A (en) | 2022-08-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210650859.1A Pending CN114922742A (en) | 2022-06-09 | 2022-06-09 | Motor-regulated self-impact nozzle |
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| CN (1) | CN114922742A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419519A (en) * | 2022-11-03 | 2022-12-02 | 西安航天动力研究所 | Variable-thrust needle-bolt type injector |
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2022
- 2022-06-09 CN CN202210650859.1A patent/CN114922742A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115419519A (en) * | 2022-11-03 | 2022-12-02 | 西安航天动力研究所 | Variable-thrust needle-bolt type injector |
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