CN220470078U - Fixing structure of movable body of vectoring nozzle - Google Patents

Abstract

The utility model provides a fixed knot of vector nozzle movable body constructs, relate to solid rocket engine nozzle technical field, fixed knot constructs and sets up between the expansion section of fixed body and nozzle, fixed body fixed connection is in engine casing, fixed knot constructs and includes a plurality of gaskets, a plurality of gaskets are the annular and arrange between fixed body inner wall and the expansion section outer wall, every gasket includes interior backup pad, outer backup pad and diaphragm, the outer wall laminating of interior backup pad and fixed body, the outer backup pad is laminated with the outer wall of expansion section, the diaphragm is connected between interior backup pad and outer backup pad, connect through the go-between two adjacent diaphragms. The movable body of the spray pipe can be effectively fixed under the condition that the fixed body is not perforated.

Description

Fixing structure of movable body of vectoring nozzle

Technical Field

The utility model relates to the technical field of solid rocket engine spray pipes, in particular to a fixing structure of a movable body of a solid rocket engine spray pipe.

Background

The fixed structure of the movable body of the vectoring nozzle mainly comprises the following contents:

(1) The movable body of the vectoring nozzle is fixed in structure;

(2) The method for realizing the fixed structure of the movable body of the vectoring nozzle.

The solid rocket engine snap ring connection technology can effectively reduce the quality of a connection structure and improve the mass ratio; the vector control of the engine can be effectively realized by the vector spray pipe. The conventional vectoring nozzle movable body fixing structure adopts a support rod 93, and is connected with a flange plate 91 connected with the nozzle through a connecting support lug 92, wherein the support rod 93 is connected with the connecting support lug 92 in a manner of radial connection, axial connection, radial and axial compound connection and the like, and the connection mode is shown in fig. 1. In the engine with the snap ring connection structure, the supporting rod 93 structure of the conventional constraint vector nozzle movable body interferes with the snap ring assembly space on the end face of the nozzle fixed body 5, so that the opening is needed to be fixed on the non-end face of the fixed body 5, as shown in fig. 2. The opening of the fixed body 5 weakens the structural strength of the fixed body 5 to a certain extent (especially for the engine with higher mass ratio requirement), so that a structure capable of fixing the movable body of the spray pipe without punching is needed to meet the requirement of fixing the movable body of the vectoring spray pipe.

Disclosure of Invention

The utility model solves the technical problems that: overcomes the defects of the prior art, provides a fixing structure of a movable body of a vectoring nozzle, and realizes the effective fixing of the movable body of the nozzle.

The technical scheme of the utility model is as follows:

the utility model provides a fixed knot of vector spray pipe activity body constructs, set up between the expansion section of fixed body and spray pipe, fixed body fixed connection is in engine case, fixed knot constructs including a plurality of gaskets, a plurality of gaskets are the annular and arrange between fixed body outer wall and the expansion section outer wall, every gasket includes interior backup pad, outer backup pad and diaphragm, interior backup pad and the laminating of the inner wall of fixed body, the outer backup pad is laminated with the outer wall of expansion section, the diaphragm is connected between interior backup pad and outer backup pad, connect through the go-between two adjacent diaphragms.

A flexible inner flexible cushion layer is connected to one side of the inner support plate, which is contacted with the inner wall of the fixed body; one side of the outer support plate, which is contacted with the outer wall of the expansion section, is connected with a flexible outer flexible cushion layer.

The thickness D1 of the inner flexible cushion layer and the outer flexible cushion layer is 3 mm-5 mm.

The connecting ring is positioned at 1/3-2/3 of the width of the transverse plate along the radial direction of the expansion section.

The number N of the cushion blocks is 6-8.

The connecting rings are connected between the adjacent transverse plates through locking bolts, two first holes are formed in each transverse plate, two second holes are formed in each connecting ring, and the locking bolts penetrate through the second holes and the first holes to connect the connecting rings and the transverse plates.

The pitch circle radius R and the included angle alpha 4 of the two first holes on the transverse plate, the pitch circle radius R and the included angle alpha 5 of the two second holes on the connecting ring,

the arc angle of the connecting ring is alpha 3,

in summary, the present application at least includes the following beneficial technical effects:

the fixing structure of the movable body of the vectoring nozzle is realized, and the movable body of the vectoring nozzle can be effectively fixed under the condition that the fixed body is not perforated.

Drawings

FIG. 1 is a diagram showing a conventional vectoring nozzle movable body support rod fixing structure, wherein left, middle and right diagrams are respectively radial connection, axial connection and radial-axial compound connection;

FIG. 2 is a schematic view of a supporting rod structure in a snap ring connection structure, wherein a left view and a right view are respectively a snap ring assembly space and a non-end surface upper opening;

FIG. 3 is an overall schematic view of the spout extension segment and the stationary body secured by a securing structure;

FIG. 4 is a cross-sectional view of a spacer block;

FIG. 5 is a schematic illustration of an inner flexible mat;

FIG. 6 is a schematic view of a spacer and a first opening;

FIG. 7 is a schematic view of an outer flexible mat;

FIG. 8 is a schematic view of the connecting ring and the second opening.

Reference numerals illustrate: 1. an inner flexible cushion layer; 2. a cushion block; 3. an outer flexible cushion layer; 4. a connecting ring; 5. a fixed body; 6. an expansion section;

21. an inner support plate; 22. an outer support plate; 23. a cross plate;

91. a flange plate; 92. connecting the lugs; 93. and (5) supporting the rod.

Detailed Description

The present application is described in further detail below with reference to the attached drawing figures and specific examples:

the embodiment of the application discloses fixed knot of vector nozzle movable body constructs, as shown in fig. 3 and 4, set up between fixed body 5 and the expansion section 6 of spray tube, fixed body 5 fixed connection is in engine case, and the outside of expansion section 6 is located to fixed body 5 cover, in this application, the expansion section 6 of spray tube is the spray tube movable body promptly, fixed knot constructs including a plurality of gaskets, a plurality of gaskets are the annular and arrange between fixed body 5 inner wall and expansion section 6 outer wall, connect through go-between 4 between two adjacent gaskets. The specific dimensions are determined by the structural dimensions of the components.

As shown in fig. 4 and 5, each spacer includes an inner support plate 21, an outer support plate 22, and a cross plate 23, the inner support plate 21 being attached to the inner wall of the fixed body 5, the outer support plate 22 being attached to the outer wall of the expansion section 6, and the cross plate 23 being connected between the inner support plate 21 and the outer support plate 22. A flexible inner flexible cushion layer 1 is connected to one side of the inner support plate 21, which is contacted with the inner wall of the fixed body 5; the side of the outer support plate 22 contacting the outer wall of the expansion section 6 is connected with a flexible outer flexible cushion layer 3. The inner flexible cushion layer 1 and the outer flexible cushion layer 3 are made of rubber, and the rubber can be natural rubber or nitrile rubber.

The angle alpha 1 and the angle alpha 2 in the inner flexible cushion layer 1, the cushion block 2 and the outer flexible cushion layer 3 are determined according to the taper angle alpha 1 of the spray pipe expansion section 6 and the taper angle alpha 2 of the fixed body 5, the angle alpha 3 is determined by the number N of the cushion blocks 2, and the thickness D1 of the inner flexible cushion layer 1 and the outer flexible cushion layer 3 is 3 mm-5 mm in the range of values, see fig. 5 and 7.

The dimensions L1, L2, D3 and D4 of the cushion block 2 are selected according to the mass of the movable body of the spray pipe so as to ensure the structural strength, wherein L1 is the axial length of the upper surface of the cushion block, L2 is the axial length of the lower surface of the cushion block, D3 is the thickness of the outer support plate 22 and the inner support plate 21, and D4 is the thickness of the transverse plate 23. Meanwhile, 2 xPhi A holes are formed in the cushion block 2, namely, two first holes are formed in each transverse plate 23, the reference circle radius R of the two first holes and the included angle alpha 4 are formed, the cushion block 2 can be made of 45 steel or 30CrMnSiA steel, as shown in fig. 5, the number N of the cushion blocks 2 is 6-8, and the angle alpha 3 is determined by the number N of the cushion blocks 2. The angle alpha 3 of the connecting ring 4 is determined by the number N of the cushion blocks 2, and meanwhile, 2 x phi A holes are formed in the connecting ring 4, namely, two second holes are formed in each connecting ring 4, the reference circle radius R of the two second holes and the included angle alpha 5 are shown in fig. 7, and every two cushion blocks 2 are fixedly connected through the connecting ring 4 through the first holes and the second holes by locking bolts, and fig. 6 and 8 are shown. The connecting ring 4 is located at 1/3-2/3 of the width of the cross plate 23 in the radial direction of the expansion section 6. The dimensional relationship is required to satisfy N=6 to 8. Wherein the arc angle of the connecting ring 4 is alpha 3.

The implementation principle of the application is as follows: after the expansion section 6 of the spray pipe is connected to the engine shell, a plurality of split gaskets are sequentially placed between the fixed body 5 and the expansion section 6, then the positions of the gaskets are adjusted, and the connecting ring 4 is connected between the adjacent gaskets, so that the expansion section 6 is effectively fixed between the fixed bodies 5, and holes are not required to be punched on the fixed bodies 5.

While the utility model has been described in terms of the preferred embodiment, it is not intended to limit the utility model, but it will be apparent to those skilled in the art that variations and modifications can be made without departing from the spirit and scope of the utility model, and therefore the scope of the utility model is defined in the appended claims.

Claims (8)

1. A fixed structure of a vector nozzle movable body is characterized in that: set up between fixed body (5) and expansion section (6) of spray tube, fixed body (5) fixed connection is in engine casing, fixed knot constructs including a plurality of cushion (2), a plurality of cushion (2) are annular cloth and are located between fixed body (5) outer wall and expansion section (6) outer wall, every cushion (2) include interior backup pad (21), outer backup pad (22) and diaphragm (23), interior backup pad (21) are laminated with the inner wall of fixed body (5), outer backup pad (22) are laminated with the outer wall of expansion section (6), diaphragm (23) are connected between interior backup pad (21) and outer backup pad (22), be connected through go-between (4) between two adjacent diaphragms (23).

2. The fixed structure of a movable body of a vectoring nozzle according to claim 1, wherein: one side of the inner supporting plate (21) contacted with the inner wall of the fixed body (5) is connected with a flexible inner flexible cushion layer (1); one side of the outer supporting plate (22) contacted with the outer wall of the expansion section (6) is connected with a flexible outer flexible cushion layer (3).

3. A vectoring nozzle movable body fixing structure according to claim 2 wherein: the thickness D1 of the inner flexible cushion layer (1) and the outer flexible cushion layer (3) is 3 mm-5 mm.

4. The fixed structure of a movable body of a vectoring nozzle according to claim 1, wherein: the connecting ring (4) is positioned at 1/3-2/3 of the width of the transverse plate (23) along the radial direction of the expansion section (6).

5. The fixed structure of a movable body of a vectoring nozzle according to claim 1, wherein: the number N of the cushion blocks (2) is 6-8.

6. The fixed structure of a movable body of a vectoring nozzle of claim 5 wherein: the connecting rings (4) are connected between the adjacent transverse plates (23) through locking bolts, two first holes are formed in each transverse plate (23), two second holes are formed in each connecting ring (4), and the locking bolts penetrate through the second holes and the first holes to connect the transverse plates (23) with the connecting rings (4).

7. The fixed structure of a vectoring nozzle movable body of claim 6 wherein: the pitch circle radius R and the included angle alpha 4 of the two first holes on the transverse plate (23) and the pitch circle radius R and the included angle alpha 5 of the two second holes on the connecting ring (4),

8. the fixed structure of a movable body of a vectoring nozzle according to claim 1, wherein: the arc angle of the connecting ring (4) is alpha 3,