A vector nozzle

Abstract

A vector nozzle comprises: a nozzle assembly, which comprises an inlet ring, a nozzle ring and at least one intermediate ring between the inlet ring and the nozzle ring, wherein the intermediate ring can move in three-dimensional directions relative to the inlet ring, and the nozzle ring can move in three-dimensional directions relative to the intermediate ring; a first driving mechanism, which is arranged on the upper side and / or the lower side of the nozzle assembly and can drive the nozzle ring to move relative to the first direction; and a second driving mechanism, which is arranged on the left side and / or the right side of the nozzle assembly and can drive the nozzle ring to move relative to the second direction; wherein the first direction is substantially orthogonal to the second direction. The vector nozzle allows the airflow injection direction to be adjusted at a larger adjustment angle, and has a smaller pressure loss, and is particularly suitable for adjusting the injection angle of high-temperature and high-speed airflow.

Description

Technical Field

[0001] The present application relates to an airflow injection device, and in particular to a vector nozzle capable of adjusting the injection angle of airflow. Background Art

[0002] Power devices such as aircraft engines and gas turbines may include airflow injection devices for injecting airflow outward. The general type of nozzle is a fixed nozzle, whose airflow injection direction is fixed and can only inject airflow in one direction. Another type of nozzle is a vector nozzle, which can be freely adjusted within a certain angle range to achieve the adjustment of the airflow injection direction.

[0003] At present, the main types of vector nozzles include two-dimensional vector nozzles, three-dimensional axisymmetric vector nozzles and process thrust vector nozzles.

[0004] A common design of a binary vector nozzle is a tail nozzle with a rectangular cross-section, and four mutually interlocking adjustment plates are set at the nozzle of the tail nozzle, and the four adjustment plates are adjusted by pitching up and down and swinging left and right. Through the above-mentioned adjustment of the adjustment plate, the adjustment of the injection direction in the up and down direction (pitch action of the up and down adjustment plates) or in the left and right direction (swing action of the left and right adjustment plates) is achieved. This vector nozzle has a simple control method, but its structure is relatively bulky and the adjustment angle is limited. As the adjustment angle increases, its pressure loss will increase sharply, and the thrust loss will also increase sharply, so it can only be adjusted at a small angle. Generally speaking, the adjustment angle of the binary vector nozzle currently used is mostly within the range of plus or minus 20°.

[0005] The three-dimensional axisymmetric vector nozzle can adjust the injection direction up and down and left and right at the same time, so as to realize multi-directional and multi-angle injection direction adjustment. The three-dimensional axisymmetric vector nozzle includes multiple adjustment cylinders, and the contact surface between these adjustment cylinders forms a certain angle with the axis of the adjustment cylinder. By rotating the adjustment cylinder, the angle between adjacent adjustment cylinders can be changed to realize vector adjustment. The adjustment angle of this type of vector nozzle is large, which can reach plus or minus 90°, and the internal flow characteristics are good and the pressure loss is small. However, one problem with this type of vector nozzle is that high-temperature resistant annular bearings need to be set between the adjustment cylinders and sealed, which is technically difficult and the control system is relatively complex.

[0006] The flow field thrust vector nozzle introduces a lateral airflow into the nozzle to change the state of the axial main airflow and thus change the airflow direction. This type of vector nozzle has a simple structure, but requires an additional air source and has a poor adjustment effect.

[0007] Other structures of three-dimensional vector nozzles include bellows, spherical surface behind the nozzle, lateral jet at the nozzle, etc. However, these adjustment methods need to be improved in terms of pressure loss and adaptability to high-temperature and high-speed airflow.

[0008] Therefore, there is a need for a vector nozzle with an improved structure, which can achieve adjustment within a larger angle range, is adaptable to high-temperature and high-speed airflow, and has low pressure loss. Summary of the invention

[0009] The present invention is made to solve the technical problems existing in the above-mentioned prior art. The purpose of the present invention is to provide a vector nozzle which can provide a larger adjustment angle range, has good internal flow characteristics, can adapt to high-temperature and high-speed airflow, and has small pressure loss.

[0010] The vector nozzle of the present invention comprises: a nozzle assembly, the nozzle assembly comprises an inlet ring, a nozzle ring and at least one intermediate ring located between the inlet ring and the nozzle ring, wherein the intermediate ring can move in three-dimensional directions relative to the inlet ring, and the nozzle ring can move in three-dimensional directions relative to the intermediate ring; a first driving mechanism, the first driving mechanism is arranged on the upper side and / or the lower side of the nozzle assembly, and can drive the relative movement of the nozzle ring in a first direction; and a second driving mechanism, the second driving mechanism is arranged on the left side and / or the right side of the nozzle assembly, and can drive the relative movement of the nozzle ring in a second direction; wherein the first direction is substantially orthogonal to the second direction. The relative movement mentioned here may include the swinging of the intermediate ring relative to the inlet ring in three-dimensional directions and / or the swinging of the nozzle ring relative to the intermediate ring in three-dimensional directions.

[0011] In the above-mentioned structure of the vector nozzle, by providing at least one intermediate ring and a nozzle ring that can perform relative movement in three-dimensional directions, the adjustment angle can be increased, and during the adjustment process, the change in the cross-sectional area inside the nozzle is small, or even no change, so that the pressure loss is small, which is particularly suitable for adjusting the injection angle of high-temperature and high-speed airflow.

[0012] In a preferred structure, the inner ring surface of at least one intermediate ring adjacent to the inlet ring matches the outer ring surface of the inlet ring, and the outer ring surface of at least one intermediate ring adjacent to the nozzle ring matches the inner ring surface of the nozzle ring. By matching the inner ring surface and the outer ring surface of the two adjacent rings, good sealing performance can be ensured while ensuring movement flexibility.

[0013] Furthermore, the diameter of the inner ring surface of the at least one intermediate ring adjacent to the inlet ring is equal to the diameter of the outer ring surface of the inlet ring; and / or the diameter of the outer ring surface of the at least one intermediate ring adjacent to the nozzle ring is equal to the diameter of the inner ring surface of the nozzle ring. In this way, it can be further ensured that the inner ring surface and the outer ring surface fit well during installation.

[0014] Regarding the swing angle of a single ring, preferably, the swing angle of at least one intermediate ring and / or the nozzle ring can be set within the range of plus or minus 2° to plus or minus 8°.

[0015] Preferably, a plurality of tension springs are also provided on the nozzle assembly, and the tension springs tighten the inlet ring, the nozzle ring 112 and the intermediate ring together. The provision of the tension springs can ensure that the rings fit closely together and prevent the rings from separating from each other. For example, one end of the tension spring can be connected to the inlet ring, and the other end can be connected to the nozzle ring. Alternatively, a plurality of tension springs can also be cross-connected between the inlet ring, the nozzle ring and the intermediate ring, such as one end of a tension spring is connected to the inlet ring, and the other end is connected to an intermediate ring that is relatively close to the nozzle ring, while one end of another tension spring is connected to the nozzle ring, and the other end is connected to an intermediate ring that is relatively close to the inlet ring, and so on.

[0016] Preferably, at least one groove is provided between the inner ring surface of one intermediate ring adjacent to the inlet ring and the outer ring surface of the inlet ring in at least one intermediate ring, and a ball is placed in the groove; and / or at least one groove is provided between the outer ring surface of one intermediate ring adjacent to the nozzle ring and the inner ring surface of the nozzle ring in at least one intermediate ring, and a ball is placed in the groove. The provision of the groove and the ball can further increase the movement flexibility of the nozzle. The ball is, for example, a steel ball, etc.

[0017] The above-mentioned vector nozzle may include a plurality of intermediate rings, wherein, in two adjacent intermediate rings, the outer ring surface of the intermediate ring close to the inlet ring matches the inner ring surface of the intermediate ring close to the nozzle ring. Furthermore, at least one groove may be provided between the outer ring surface of the intermediate ring close to the inlet ring and the inner ring surface of the intermediate ring close to the nozzle ring, and a ball bearing may be placed in the groove.

[0018] In a specific implementation structure, at least one of the first drive mechanism and the second drive mechanism includes a gear drive assembly, the gear drive assembly includes: a drive motor, the drive motor is directly or indirectly connected to the inlet ring, and a drive gear is mounted on the output shaft of the drive motor; and a guide gear, the guide gear is directly or indirectly connected to the nozzle ring, and the guide gear is meshed with the drive gear. The gear transmission type drive mechanism can achieve fast and accurate adjustment.

[0019] Preferably, the drive motor is connected to the inlet ring via a plate chain. The plate chain plays a role of position restriction on the drive motor.

[0020] Furthermore, the gear drive assembly may also include a side panel mounting block, an inner panel and a motor mounting side panel, wherein the drive motor is connected to the motor mounting side panel, and the inner panel and the motor mounting side panel are mounted on the side panel mounting block so that the drive gear and the guide gear are clamped between the inner panel and the motor mounting side panel.

[0021] Preferably, the gear drive assembly further includes at least one guide shaft, which extends between the inner plate and the motor mounting side plate and is connected to at least one of the inner plate and the motor mounting side plate. In addition, a guide groove is formed in the guide gear, and the guide shaft passes through the guide groove. The guide shaft and the guide groove cooperate to ensure that the driving gear and the guide gear maintain good meshing during the rotation process.

[0022] In another specific implementation structure, at least one of the first drive mechanism and the second drive mechanism includes a wire rope, one end of the wire rope is directly or indirectly connected to the nozzle ring, and the other end of the wire rope is directly or indirectly connected to the inlet ring, wherein the length of the wire rope between the inlet ring and the nozzle ring can be changed. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings show non-limiting preferred implementation structures of the present invention, and the features and advantages of the present invention can be more clearly seen in conjunction with the accompanying drawings.

[0024] Figure 1 A perspective view of a vector nozzle of the present invention is shown.

[0025] Figure 2 A front view of a vector nozzle of the present invention is shown.

[0026] Figure 3 A side view of a vectoring nozzle of the present invention is shown.

[0027] Figure 4 Shows Figure 1 A perspective view of the nozzle assembly of the vector nozzle shown.

[0028] Figure 5 Shows Figure 4 A partially cutaway side view of the nozzle assembly is shown.

[0029] Figure 6 Shows Figure 1 A perspective view of the gear drive assembly of the vector nozzle shown.

[0030] Figure 7 Shows Figure 6 A partial cutaway view of the gear drive assembly shown.

[0031] Figure 8 It is shown that it can be additionally provided in Figure 1A three-dimensional view of the auxiliary guide mechanism on the vector nozzle shown.

[0032] Fig. 9 A perspective view of another embodiment of the vectoring nozzle of the present invention is shown, wherein the gear drive assembly is a wire rope. DETAILED DESCRIPTION

[0033] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the drawings are only preferred embodiments of the present invention and do not constitute a limitation on the scope of the present invention. Those skilled in the art can make various obvious modifications, variations, and equivalent substitutions to the present invention based on the embodiments shown in the drawings, which all fall within the protection scope of the present invention.

[0034] In the following description, terms such as "up", "down", "left" and "right" that indicate directions and orientations are used for the convenience of description and are based on the orientation shown in the figure or the orientation of the CNC turntable when it is actually installed. During operation, the components of the CNC turntable will rotate, tilt, and other movements, causing the orientation of some components to change.

[0035] like Figures 1 to 3 As shown, the vectoring nozzle 100 includes a nozzle assembly 110 and a gear drive assembly 120. The vectoring nozzle 100 also includes a plate chain 121, wherein one side of the gear drive assembly 120 is connected to the fixed part of the nozzle assembly 110 through the plate chain, and the other side is connected to the movable part of the nozzle assembly 110, as will be described in detail below.

[0036] In the exemplary structure shown in the figure, two pairs (four sets) of gear drive assemblies 120 are provided on the nozzle assembly 110. Specifically, a first pair of gear drive assemblies 120 are provided on the upper and lower sides of the nozzle assembly 110, and the first pair of gear drive assemblies 120 work together to adjust the angle of the nozzle assembly 110 in the left-right direction. A second pair of gear drive assemblies 120 are provided on the left and right sides of the nozzle assembly 110, and the second pair of gear drive assemblies 120 work together to adjust the angle of the nozzle assembly 110 in the upper and lower directions.

[0037] In addition to the structure shown in the figure, other structures may be adopted. For example, a first gear drive assembly 120 is provided on one of the upper and lower sides of the nozzle assembly 110 to replace the first pair of gear drive assemblies 120, and the first gear drive assembly 120 is used to achieve the angle adjustment of the nozzle of the nozzle assembly 110 in the left-right direction. Similarly, a second gear drive assembly 120 may be provided on one of the left and right sides of the nozzle assembly 110 to replace the second pair of gear drive assemblies 120, and the second gear drive assembly 120 is used to achieve the angle adjustment of the nozzle of the nozzle assembly 110 in the upper and lower directions.

[0038] The exemplary structures of the nozzle assembly 110 and the gear drive assembly 120 will be described in detail below.

[0039] <Nozzle assembly>

[0040] Figure 4 A perspective view of the nozzle assembly 110 is shown. Figure 5 A side view of the nozzle assembly 110 is shown, wherein the nozzle assembly 110 is partially cut away to show its internal structure.

[0041] The nozzle assembly 110 includes an inlet ring 111 and a nozzle ring 112, and at least one, preferably a plurality of, intermediate rings 113 are arranged between the inlet ring 111 and the nozzle ring 112. The inlet ring 111, the nozzle ring 112, and the intermediate ring 113 are coaxially mounted together. Here, the end where the inlet ring 111 is located is called the proximal end of the nozzle assembly 110, and the end where the nozzle ring 112 is located is called the distal end of the nozzle assembly 110, and the inlet ring 111, the intermediate ring 113, and the nozzle ring 112 are sequentially connected from the proximal end to the distal end in the order of the inlet ring 111, the intermediate ring 113, and the nozzle ring 112. In addition, the intermediate ring 113 can move in three-dimensional directions relative to the inlet ring 111, such as relatively swinging, and the nozzle ring 112 can move in three-dimensional directions relative to the intermediate ring 113, such as relatively swinging. In the case of including multiple intermediate rings 113, the intermediate ring 113 closest to the proximal end is connected to the inlet ring 111 in a relatively movable (specifically swinging) manner, the nozzle ring 112 is connected to the intermediate ring 113 closest to the distal end in a relatively movable (specifically swinging) manner, and two adjacent intermediate rings 113 can also be connected to each other in a three-dimensional direction in a relatively movable (specifically swinging) manner. Among them, for the nozzle ring 112 and each intermediate ring 113, the adjustment angle range is preferably set to between plus or minus 2° and plus or minus 8°. Preferably, the maximum adjustment angle of each intermediate ring 113 and the adjustment angle of the nozzle ring 112 are set to the same angle, so that the total adjustment angle of the nozzle assembly 110 can be easily calculated, that is, the number of intermediate rings 113 plus 1 (that is, one nozzle ring 112), and then multiplied by the maximum adjustment angle of a single ring. If the maximum adjustment angle of the nozzle assembly 110 as a whole is to be increased, it can be achieved by increasing the number of intermediate rings 113.

[0042] Through the above-mentioned structural arrangement, a multi-stage three-dimensional rotating nozzle can be realized. Preferably, the nozzle assembly 110 also includes a plurality of tension springs 114, preferably four or more tension springs 114 as shown in the figure. One end of these tension springs 114 is connected to the inlet ring 111, and the other end is connected to the nozzle ring 112. Alternatively, the plurality of tension springs 114 can also be cross-connected between the inlet ring 111, the nozzle ring 112 and the intermediate ring 113, such as one end of a tension spring 114 is connected to the inlet ring 111, and the other end is connected to an intermediate ring 113 closer to the nozzle ring 112, while one end of another tension spring 114 is connected to the nozzle ring 112, and the other end is connected to an intermediate ring 113 closer to the inlet ring 111. By providing the tension spring 114 , it can be ensured that the rings of the nozzle assembly 110 (the inlet ring 111 , the nozzle ring 112 and the intermediate ring 113 ) will not separate or fall off during the relative movement, thereby ensuring the integrity of the nozzle assembly 110 .

[0043] Further preferably, a limit stop 116 may be provided on the outer ring surface of each of the inlet ring 111, the nozzle ring 112 and the intermediate ring 113 to further help prevent the rings from separating and falling off from each other.

[0044] In the preferred structure shown in the figure, the outer ring surface of the inlet ring 111 contacts the inner ring surface of the intermediate ring 113 closest to the proximal end, and the outer ring surface of the intermediate ring 113 closest to the distal end contacts the inner ring surface of the nozzle ring 112. Preferably, the diameters of the inner ring surface and the outer ring surface of the two adjacent rings (such as the inlet ring 111 and the adjacent intermediate ring 113, two adjacent intermediate rings 113, and the nozzle ring 112 and the adjacent intermediate ring 113) are substantially the same, so as to ensure that after installation, the two adjacent rings can have a good fit with each other, and can simultaneously ensure good movement flexibility and sealing performance.

[0045] In a further preferred structure, in order to increase the movement flexibility of the nozzle, at least one groove is provided between the contacting inner ring surface and the outer ring surface of two adjacent rings, and a ball 115 is placed in the groove. The ball 115 can be, for example, a small steel ball.

[0046] The connection structure between the rings in the nozzle assembly 110 may also take other alternative forms. For example, the inner ring surface of the inlet ring 111 may contact the outer ring surface of the intermediate ring 113, and the inner ring surface of the intermediate ring 113 may contact the outer ring surface of the nozzle ring 112.

[0047] <Gear drive assembly>

[0048] Figure 6 A perspective view of an exemplary gear drive assembly 120 is shown. Figure 7 A partial cross-sectional view of the gear drive assembly 120 is shown to more clearly illustrate the internal gear transmission structure thereof.

[0049] The gear drive assembly 120 includes a drive motor 122, and a drive gear 123 is disposed on the output shaft of the drive motor 122. The gear drive assembly 120 also includes a guide gear 141, and the drive gear 123 meshes with the guide gear 141 to transmit the driving force of the drive motor 122 to the guide gear 141.

[0050] The driving motor 122 is (directly or indirectly) connected to the inlet ring 111 of the nozzle assembly 110, and the guide gear 141 is (directly or indirectly) connected to the intermediate ring 113. In this way, the driving motor 122 drives the guide gear 141 to rotate via the driving gear 123, thereby driving the intermediate ring 113 to move relative to the inlet ring 111.

[0051] Specifically, the gear drive assembly 120 includes a side plate mounting block 131, on which an inner side plate 132 and a motor mounting side plate 133 are mounted, and the inner side plate 132 and the motor mounting side plate 133 are configured to sandwich the driving gear 123 and the guide gear 141 between the inner side plate 132 and the motor mounting side plate 133. The driving motor 122 is fixedly mounted on the motor mounting side plate 133, and its output shaft can pass through the motor mounting side plate 133 and cooperate with the driving gear 123 to enable the driving gear 123 to rotate. The motor mounting side plate 133 is mounted on one end of the plate chain 121, and the other end of the plate chain 121 is connected to the inlet ring 111, so that the position of the driving motor 122 relative to the inlet ring 111 is limited by the plate chain 121.

[0052] Thus, for the gear drive assembly 120 installed on the left and / or right side of the nozzle assembly 110, when the drive motor 122 is running and the drive gear 123 is rotated, the drive motor 122 installed on the motor mounting side plate 133 cannot move up and down due to the limiting effect of the plate chain 121, while the guide gear 141 moves up and down by meshing with the drive gear 123, thereby causing the nozzle ring 112 connected to the guide gear 141 to swing in the up and down direction. Similarly, for the gear drive assembly 120 installed on the upper and / or lower side of the nozzle assembly 110, when the top motor 122 is running and the drive gear 123 is rotated, the drive motor 122 remains stationary due to the limiting effect of the plate chain 121, while the guide gear 141 moves in the left and right direction, thereby causing the nozzle ring 112 to swing in the left and right direction.

[0053] Preferably, a guide groove 142 is provided on the guide gear 141, and at least one guide shaft 134 (two guide shafts 134 are shown in the figure) is provided between the inner plate 132 and the motor mounting side plate 133, and the guide shaft 134 is connected to at least one of the inner plate 132 and the motor mounting side plate 133, and passes through the guide groove 142. In this way, the cooperation between the guide groove 142 and the guide shaft 134 can help prevent the guide gear 141 and the driving gear 123 from being disengaged from each other, and ensure that the driving gear 123 and the guide gear 141 maintain good meshing.

[0054] Preferably, at least one movable tooth 143 is provided at both ends of the guide gear 141. When the driving gear 123 moves relative to the guide gear 141 to mesh with its movable tooth 143, since the movable tooth 143 is movable in one direction, the meshing of the driving gear 123 and the movable tooth 143 will not cause the guide gear 141 to continue to move, that is, the driving gear 123 will idle. In this way, the driving motor 122 can be protected from damage due to overload.

[0055] Preferably, an auxiliary guide mechanism 150 is additionally provided on at least one of the upper side and the lower side of the nozzle assembly 110 and on at least one of the left side and the right side of the nozzle assembly 110. The structure of the auxiliary guide mechanism 150 may be substantially the same as that of the gear drive assembly 120, except that the drive motor 122 is omitted. Figure 8 shown.

[0056] The structure of the gear drive assembly 120 described above may be modified while still ensuring that its functions are basically achieved, and such modifications are also within the scope of the present invention.

[0057] For example, the structures of the side plate mounting block 131, the inner side plate 132, the motor mounting side plate 133 and the guide shaft 134 may be optional. Wherein, in the case where the inner side plate 132 is omitted, the guide shaft 134 may be provided on the motor mounting side plate 133, and the guide shaft 134 passes through the guide groove 142 in the guide gear 141. On this basis, the side plate mounting block 131 may be further omitted. Alternatively, the side plate mounting block 131, the inner side plate 132, the motor mounting side plate 133 and the guide shaft 134 may all be omitted, as long as the drive motor 122 mounted on the output shaft of the drive motor 122 can achieve meshing with the guide gear 141.

[0058] In the nozzle assembly 110, a sealing structure may be provided between adjacent rings, for example, between the inlet ring 111 and the adjacent intermediate ring 113, between two adjacent intermediate rings 113, and between the nozzle ring 112 and the adjacent intermediate ring 113, to prevent leakage at the connection between adjacent rings.

[0059] In another alternative embodiment, other drive mechanisms may be used to replace the gear drive assembly 120. Specifically, in Fig. 9 In the vector nozzle 200 shown in , a first steel wire rope 221 is provided on at least one of the upper and lower sides of the nozzle assembly 210, one end of the first steel wire rope 221 is directly or indirectly connected to the nozzle ring 212, and the other end is directly or indirectly connected to the inlet ring 211. The first steel wire rope 221 can be contracted and relaxed, so that the length of the first steel wire rope 221 between the inlet ring 211 and the nozzle ring 212 changes, thereby allowing the nozzle ring 212 to swing in the up and down direction. Similarly, a second steel wire rope 222 is provided on at least one of the left and right sides of the nozzle assembly 110, one end of the second steel wire rope 222 is directly or indirectly connected to the nozzle ring 212, and the other end is directly or indirectly connected to the inlet ring 211. By contracting and relaxing the second steel wire rope 222, the length of the second steel wire rope 222 between the inlet ring 211 and the nozzle ring 212 is changed, and the nozzle ring 212 can be swung in the left and right directions.

Claims

1. A vector nozzle, characterized in that: The vector nozzle comprises: A nozzle assembly, the nozzle assembly comprising an inlet ring, a nozzle ring and at least one intermediate ring located between the inlet ring and the nozzle ring, wherein the intermediate ring can move in three dimensions relative to the inlet ring, and the nozzle ring can move in three dimensions relative to the intermediate ring; a first driving mechanism, which is disposed on an upper side and / or a lower side of the nozzle assembly and is capable of driving a relative movement of the nozzle ring in a first direction; and a second driving mechanism, the second driving mechanism being disposed on the left side and / or the right side of the nozzle assembly and capable of driving the nozzle ring to move relative to each other in a second direction; wherein the first direction is substantially orthogonal to the second direction; A plurality of tension springs are also arranged on the nozzle assembly, and the tension springs tighten the inlet ring, the nozzle ring and the intermediate ring together; One end of the tension spring is connected to the inlet ring, and the other end is connected to the nozzle ring; or, a plurality of tension springs may be cross-connected between the inlet ring, the nozzle ring, and the intermediate ring; At least one of the first drive mechanism and the second drive mechanism includes a gear drive assembly, the gear drive assembly comprising: a driving motor, the driving motor being directly or indirectly connected to the inlet ring, and a driving gear being mounted on an output shaft of the driving motor; and a guide gear, the guide gear being directly or indirectly connected to the nozzle ring and meshing with the driving gear; The drive motor is connected to the inlet ring via a plate chain.

2. The vector nozzle according to claim 1, characterized in that: The inner ring surface of one of the at least one intermediate rings adjacent to the inlet ring matches with the outer ring surface of the inlet ring, and the outer ring surface of one of the at least one intermediate rings adjacent to the nozzle ring matches with the inner ring surface of the nozzle ring.

3. The vector nozzle according to claim 2, characterized in that: The diameter of the inner ring surface of the one of the at least one intermediate rings adjacent to the inlet ring is equal to the diameter of the outer ring surface of the inlet ring; and / or The diameter of the outer annular surface of the one intermediate ring adjacent to the nozzle ring among the at least one intermediate ring is equal to the diameter of the inner annular surface of the nozzle ring.

4. The vector nozzle according to claim 1, characterized in that: The relative movement of the at least one intermediate ring and / or the nozzle ring is swinging, and the swing angle is in the range of plus or minus 2° to plus or minus 8°.

5. The vector nozzle according to claim 2, characterized in that: At least one groove is provided between the inner ring surface of the one intermediate ring adjacent to the inlet ring in the at least one intermediate ring and the outer ring surface of the inlet ring, and a ball is placed in the groove; and / or At least one groove is provided between the outer ring surface of the one intermediate ring adjacent to the nozzle ring in the at least one intermediate ring and the inner ring surface of the nozzle ring, and a ball is placed in the groove.

6. The vector nozzle according to claim 1 or 2, characterized in that: A plurality of the intermediate rings are included, wherein, in two adjacent intermediate rings, the outer ring surface of the intermediate ring close to the inlet ring matches the inner ring surface of the intermediate ring close to the nozzle ring.

7. The vector nozzle according to claim 6, characterized in that: At least one groove is provided between the outer ring surface of the intermediate ring close to the inlet ring and the inner ring surface of the intermediate ring close to the nozzle ring, and a ball is placed in the groove.

8. The vector nozzle according to claim 1, characterized in that: The gear drive assembly also includes a side plate mounting block, an inner plate and a motor mounting side plate, and the drive motor is mounted on the motor mounting side plate, wherein the inner plate and the motor mounting side plate are mounted on the side plate mounting block so that the drive gear and the guide gear are clamped between the inner plate and the motor mounting side plate.

9. The vector nozzle according to claim 8, characterized in that: The gear drive assembly further includes at least one guide shaft extending between the inner side plate and the motor mounting side plate and connected to at least one of the inner side plate and the motor mounting side plate, and A guide groove is formed in the guide gear, and the guide shaft passes through the guide groove.

10. The vector nozzle according to claim 1, characterized in that: At least one of the first drive mechanism and the second drive mechanism includes a steel wire rope, one end of which is directly or indirectly connected to the nozzle ring, and the other end of which is directly or indirectly connected to the inlet ring, wherein the length of the steel wire rope between the inlet ring and the nozzle ring can be changed.

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