CN219388030U - Snap ring connection structure of combustion chamber shell and spray pipe shell - Google Patents

Abstract

The utility model provides a snap ring connecting structure of a combustion chamber shell and a spray pipe shell, which comprises the combustion chamber shell, wherein the upper surface of the combustion chamber shell is fixedly connected with a polymer bottleneck, the outer surface of the polymer bottleneck is slidably connected with the spray pipe shell, a release limiting mechanism is arranged outside the spray pipe shell and comprises a push plate, the outer surface of the polymer bottleneck is fixedly connected with a plurality of tongue plates, the outer part of each tongue plate is provided with a limiting mechanism, each limiting mechanism comprises a sliding arc plate, and a plurality of vertical grooves and balance grooves are formed in the spray pipe shell. Through relieving the cooperation between stop gear, stop gear and the vertical groove, can carry out quick installation and dismantlement to the spray tube casing, need not to use the bolt just can carry out firm connection to combustion chamber casing and spray tube casing, it is more convenient when detecting and maintaining the spray tube casing.

Description

Snap ring connection structure of combustion chamber shell and spray pipe shell

Technical Field

The utility model belongs to the technical field of engine structural design, and particularly relates to a clamping ring connection structure of a combustion chamber shell and a spray pipe shell.

Background

The combustion chamber shell is an important part of the solid rocket engine, provides a charging space for the engine, bears the working load of the engine and the external load of the missile, and causes major accidents once leakage occurs, so that a compact, light and reliable connection mode is required to meet the sealing requirements of mechanical interfaces of the combustion chamber shell, front and rear end covers and the jet pipe shell. However, the machining precision is high, special tools are needed, and the assembly and the disassembly are difficult.

According to the Chinese patent of application number 202210829756.1, an integrated snap ring connection structure of a combustion chamber shell and a spray pipe shell is disclosed, and comprises the combustion chamber shell, the spray pipe shell and a limiting assembly; the combustion chamber shell comprises a barrel section, a first end socket section and a second end socket section, wherein the first end socket section and the second end socket section are respectively arranged at the head end and the tail end of the barrel section, a central round hole is formed in the tail end face of the second end socket section along the axial direction, a plurality of inserting grooves are circumferentially distributed on the inner wall of the central round hole at equal intervals, and sliding grooves are formed in the inner wall of the central round hole between every two adjacent inserting grooves; the spray pipe shell is arranged at the tail end of the combustion chamber shell and comprises a converging section, a transition section and an expanding section; the outer wall of the converging section, which faces the second seal head section, is provided with a plurality of insertion convex blocks which can be matched with the insertion grooves at equal intervals along the circumferential direction, and the insertion convex blocks can slide along the sliding grooves so as to realize the connection or separation of the spray pipe shell and the combustion chamber shell; the limiting component can be connected with the insertion groove in a matched mode, and limiting of the spray pipe shell connected with the combustion chamber shell is achieved.

By adopting the scheme, the shearing stress and the extrusion stress of the clamping ring can be effectively reduced, the safety coefficient and the bearing capacity of the connection of the combustion chamber shell and the spray pipe shell are improved, and the scheme is suitable for the reliable connection of a high-pressure engine; therefore, we provide a snap ring connection structure of a combustion chamber shell and a spray pipe shell to solve the above problems.

Disclosure of Invention

The utility model aims to make up the defects of the prior art and provides a clamping ring connecting structure of a combustion chamber shell and a spray pipe shell.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a snap ring connection structure of combustion chamber casing and spray tube casing, includes the combustion chamber casing, the last fixed surface of combustion chamber casing is connected with the polymer bottleneck, the surface sliding connection of polymer bottleneck has the spray tube casing, the outside of spray tube casing is equipped with the release stop gear, release stop gear includes the push pedal down, the surface fixed connection of polymer bottleneck has a plurality of hyoid lamina, every the outside of hyoid lamina all is equipped with stop gear, every stop gear all includes the slip arc, the inside of spray tube casing is opened there are a plurality of vertical grooves and balancing tank.

As the preference of this embodiment, the bottom surface of the lower push plate is fixedly connected with a plurality of linkage plates, and a lower chute is fixedly connected with one side surface of each two linkage plates, which are close to each other.

As a preferable mode of this embodiment, a rotating plate is rotatably connected to the inside of each lower chute, and an outer moving groove is rotatably connected to the outer surface of each rotating plate.

Preferably, in this embodiment, the outer surface of each sliding arc plate is slidably connected to the outer surfaces of the vertical groove and the balance groove, and the outer surface of each tongue plate is slidably connected to the inner wall of the vertical groove.

As the preference of this embodiment, the surface fixedly connected with sideslip axle of slip arc, every outside move the inside of groove and the surface fixed connection of sideslip axle, the surface of sideslip axle all with the inner wall sliding connection of spray tube casing.

As a preferable mode of this embodiment, the outer surface of each traverse shaft is wound with a second spring, and two ends of the second spring are fixedly connected with the outer surface of the sliding arc plate and the inner wall of the balancing groove respectively.

As the preference of this embodiment, the surface of every lower spout all fixedly connected with drives the piece, the surface of every drive piece all with the inner wall sliding connection of spray tube casing.

As the preference of this embodiment, the bottom surface of each driving block is fixedly connected with a first spring, and the bottom end of each first spring is fixedly connected with the inner wall of the spray tube shell.

Compared with the prior art, the utility model has the following beneficial effects:

(1) According to the utility model, the spray pipe shell can be quickly installed and disassembled by releasing the cooperation among the limiting mechanism, the limiting mechanism and the vertical groove, and the combustion chamber shell and the spray pipe shell can be firmly connected without using bolts, so that the detection and maintenance of the spray pipe shell by workers are more convenient.

(2) According to the utility model, the plurality of linkage plates and the lower sliding grooves can be driven to move downwards by pushing the lower push plate downwards, so that the rotating plate can be driven to rotate, and the outward moving groove can be driven to move. The outer moving groove can drive the transverse moving shaft and the sliding arc plate to move in the direction away from the spray pipe shell, so that the limit of the sliding arc plate on the tongue plate can be relieved, the combustion chamber shell and the spray pipe shell can be separated, and the efficiency of disassembling the spray pipe shell is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of a portion of the utility model at A in FIG. 2;

FIG. 4 is a schematic view of a release limiting mechanism;

fig. 5 is a schematic structural view of the limiting mechanism.

The figure shows: 1. the combustion chamber comprises a combustion chamber shell, 2, a spray pipe shell, 3, a release limiting mechanism, 301, a lower push plate, 302, a linkage plate, 303, a lower sliding chute, 304, a rotating plate, 305, an outward moving chute, 4, a macromolecule bottleneck, 5, a tongue plate, 6, a driving block, 7, a first spring, 8, a limiting mechanism, 801, a sliding arc plate, 802, a transverse moving shaft, 803, a second spring, 9, a vertical chute, 10 and a balancing chute. 1. A combustion chamber housing; 2. a nozzle housing; 3. releasing the limiting mechanism; 301. a lower push plate; 302. a linkage plate; 303. a lower chute; 304. a rotating plate; 305. an outward moving groove; 4. a polymer bottleneck; 5. a tongue plate; 6. a driving block; 7. a first spring; 8. a limiting mechanism; 801. a sliding arc plate; 802. a traversing shaft; 803. a second spring; 9. a vertical slot; 10. balance groove.

Detailed Description

The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.

Referring to fig. 1 to 5, an embodiment of the present utility model provides a snap ring connection structure for a combustion chamber housing and a nozzle housing, which includes a combustion chamber housing 1, wherein a polymer bottleneck 4 is fixedly connected to an upper surface of the combustion chamber housing 1, a nozzle housing 2 is slidably connected to an outer surface of the polymer bottleneck 4, a release limiting mechanism 3 is disposed outside the nozzle housing 2, and the release limiting mechanism 3 is in a circumferential array. The friction coefficient between the inner wall of the nozzle housing 2 and the outer surface of the polymer bottleneck 4 is large, so that the nozzle housing 2 can be prevented from being flushed away by the high pressure of the gas sprayed outwards by the combustion chamber housing 1.

Referring to fig. 1 to 5, the release limiting mechanism 3 includes a push plate 301, and a plurality of tongue plates 5 are fixedly connected to the outer surface of the polymer bottleneck 4, and the tongue plates 5 are in a circumferential array. The outside of each tongue plate 5 is provided with a limiting mechanism 8, each limiting mechanism 8 comprises a sliding arc plate 801, and a plurality of vertical grooves 9 and balancing grooves 10 are formed in the spray tube shell 2. In this embodiment, the outer surfaces of the sliding arc plate 801 and the tongue plate 5 are provided with arcs by the vertical groove 9 and the balance groove 10 being two grooves communicating with each other, so that the smoothness in mounting the spout housing 2 can be improved.

Referring to fig. 1 to 5, a plurality of linkage plates 302 are fixedly connected to the bottom surface of a lower push plate 301, a lower chute 303 is fixedly connected to one side surface of each two linkage plates 302, which is close to each other, a rotating plate 304 is rotatably connected to the inside of each lower chute 303, and an outer moving groove 305 is rotatably connected to the outer surface of each rotating plate 304. The outer surface of the lower push plate 301 is provided with a thread which is convenient to push, thereby improving the convenience when a worker releases the limit.

Referring to fig. 1 to 5, the outer surface of each sliding arc plate 801 is slidably connected with the outer surfaces of the vertical groove 9 and the balance groove 10, the outer surface of each tongue plate 5 is slidably connected with the inner wall of the vertical groove 9, the outer surface of the sliding arc plate 801 is fixedly connected with a transverse moving shaft 802, the inner part of each outer moving groove 305 is fixedly connected with the outer surface of the transverse moving shaft 802, and the outer surface of the transverse moving shaft 802 is slidably connected with the inner wall of the nozzle casing 2. In the present embodiment, the sliding arc 801 is in contact with both the vertical groove 9 and the balance groove 10 in a natural state, so that it is possible to avoid the sliding arc 801 from being detached from the outer surface of the traversing shaft 802 under the high pressure generated by the combustion chamber housing 1. The outer surface of each traversing shaft 802 is wound with a second spring 803, and two ends of the second spring 803 are fixedly connected with the outer surface of the sliding arc 801 and the inner wall of the balancing groove 10 respectively. In this embodiment, a force is generated on the nozzle housing 2 after the flame inside the combustion chamber housing 1 is ignited, and a spring with a larger elastic coefficient should be selected as the second spring 803 in order to restrain the force.

Referring to fig. 1 to 5, the outer surface of each lower chute 303 is fixedly connected with a driving block 6, the outer surface of each driving block 6 is slidably connected with the inner wall of the nozzle housing 2, the bottom surface of each driving block 6 is fixedly connected with a first spring 7, and the bottom end of each first spring 7 is fixedly connected with the inner wall of the nozzle housing 2. In this embodiment, the inner wall of the nozzle housing 2 is provided with a slot adapted to the driving block 6, and the elastic force of the first spring 7 is used to help the lower chute 303 and the lower push plate 301 to reset when the nozzle housing 2 is removed, so as to facilitate the next use when the limit is released.

Working principle: when the combustion chamber shell 1 and the nozzle shell 2 are clamped together, the vertical groove 9 and the tongue plate 5 are aligned and pushed in, the tongue plate 5 can push the sliding arc plate 801 away until the sliding arc plate 801 reaches the lower surface of the tongue plate 5, and under the elastic force of the second spring 803, the sliding arc plate 801 can be driven to reset, and the sliding arc plate 801 and the tongue plate 5 are mutually limited, so that the nozzle shell 2 can be installed. When the combustion chamber housing 1 and the nozzle housing 2 need to be separated, the lower push plate 301 is pushed downwards, so that the linkage plate 302 and the lower sliding groove 303 can be driven to move downwards, and the rotating plate 304 can be driven to rotate, so that the outer sliding groove 305 can be driven to move. The outward moving groove 305 can drive the lateral moving shaft 802 and the sliding arc plate 801 to move outwards, so that the limit of the sliding arc plate 801 to the tongue plate 5 can be released, and the combustion chamber shell 1 and the nozzle shell 2 can be separated, therefore, the installation and the disassembly are only needed to push, and the convenience in the process of disassembling the nozzle shell 2 is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (8)

1. The utility model provides a snap ring connection structure of combustion chamber casing and spray tube casing, includes combustion chamber casing (1), its characterized in that: the high-molecular-weight high-pressure combustion chamber is characterized in that the upper surface of the combustion chamber shell (1) is fixedly connected with a high-molecular bottleneck (4), the outer surface of the high-molecular bottleneck (4) is slidably connected with a spray pipe shell (2), a release limiting mechanism (3) is arranged outside the spray pipe shell (2), the release limiting mechanism (3) comprises a push plate (301), a plurality of tongue plates (5) are fixedly connected with the outer surface of the high-molecular bottleneck (4), each tongue plate (5) is provided with a limiting mechanism (8), each limiting mechanism (8) comprises a sliding arc plate (801), and a plurality of vertical grooves (9) and balancing grooves (10) are formed in the spray pipe shell (2).

2. The structure for connecting a combustion chamber housing to a nozzle housing in accordance with claim 1, wherein: the bottom surface of push pedal (301) down is fixedly connected with a plurality of linkage boards (302), every two the side that linkage board (302) are close to each other all fixedly connected with down spout (303).

3. The structure for connecting a combustion chamber housing to a nozzle housing in accordance with claim 2, wherein: the inside of every lower spout (303) all rotates and is connected with rotor plate (304), and the surface of every rotor plate (304) all rotates and is connected with outer groove (305).

4. The structure for connecting a combustion chamber housing to a nozzle housing in accordance with claim 1, wherein: the outer surface of each sliding arc plate (801) is in sliding connection with the outer surfaces of the vertical groove (9) and the balance groove (10), the vertical groove (9) is communicated with the balance groove (10), and the outer surface of each tongue plate (5) is in sliding connection with the inner wall of the vertical groove (9).

5. A snap ring connection structure of a combustion chamber housing and a nozzle housing according to claim 3, wherein: the outer surface of the sliding arc plate (801) is fixedly connected with a transverse moving shaft (802), the inside of each outer moving groove (305) is fixedly connected with the outer surface of the transverse moving shaft (802), and the outer surface of the transverse moving shaft (802) is in sliding connection with the inner wall of the spray pipe shell (2).

6. The structure for connecting a combustion chamber housing to a nozzle housing as claimed in claim 5, wherein: the outer surface of each transverse moving shaft (802) is wound with a second spring (803), and two ends of the second spring (803) are fixedly connected with the outer surface of the sliding arc plate (801) and the inner wall of the balancing groove (10) respectively.

7. The structure for connecting a combustion chamber housing to a nozzle housing in accordance with claim 2, wherein: the outer surface of each lower chute (303) is fixedly connected with a driving block (6), and the outer surface of each driving block (6) is in sliding connection with the inner wall of the spray pipe shell (2).

8. The structure for connecting a combustion chamber housing to a nozzle housing as claimed in claim 7, wherein: the bottom surface of every drive piece (6) all fixedly connected with first spring (7), the bottom of every first spring (7) all with the inner wall fixed connection of spray tube casing (2).