Spraying protection tool for outer heat-proof coating of solid rocket engine jet pipe

Abstract

The utility model discloses a solid rocket engine jet pipe outer heat-proof coating spraying protection tool which comprises a main body assembly, an outer heat-proof coating assembly, an outer heat-proof coating assembly and an outer heat-proof coating assembly. The main body assembly comprises a flange plate and an installation hole formed in the upper surface of the flange plate. The anti-blocking assembly comprises a plunger clamped in the mounting hole, a first groove formed in the lower surface of the plunger, a first T-shaped column clamped in the first groove, a second groove formed in the upper surface of the plunger and a second T-shaped column screwed in the second groove; the dismounting assembly comprises a T-shaped connecting column connected to the top end of the second T-shaped column in an injection molding mode. The utility model aims to solve the problems that the outer surface of an existing engine spray pipe needs to be treated after paint spraying or external heat protection is sprayed, a non-spraying area needs to be protected, a spray pipe flange plate hole site is one, however, according to an existing treatment method, a hole digging tool is adopted for cleaning after spraying, and the cost is low. The workload is increased, and the cleaning cannot be very clean.

Description

Technical Field

[0001] The utility model relates to the technical field of nozzle thermal protection coating spraying, in particular to a protective tooling for spraying thermal protection coating on the outer surface of a nozzle of a solid rocket engine. Background Art

[0002] The solid rocket engine nozzle needs to be sprayed with a heat-resistant coating on the outer surface. This heat-resistant coating can effectively reduce the surface temperature of the rocket nozzle, extend the service life of the rocket engine, and improve the performance and reliability of the engine. At the same time, the heat-resistant coating also has the characteristics of heat insulation, corrosion resistance and oxidation resistance to protect the nozzle from erosion by the environment and chemical media.

[0003] However, it still has the following disadvantages in actual use:

[0004] After the existing engine nozzle is painted or sprayed with external heat protection, the outer surface of the nozzle needs to be processed. We need to protect the non-spraying area, and the nozzle flange hole is one of them. However, the existing processing method is to use a hole-digging tool to clean it after spraying, which increases the workload and cannot be cleaned very cleanly. Utility Model Content

[0005] Technical solutions to be solved

[0006] The purpose of the utility model is to provide a solid rocket engine nozzle external heat protection coating spraying protective tooling to solve the problem raised in the above background technology that the existing engine nozzle needs to be processed on the outer surface of the nozzle after painting or spraying external heat protection, and the non-spraying area needs to be protected, and the nozzle flange hole is one of them. However, the existing processing method is to use a hole-digging tool for cleaning after spraying, which increases the workload and cannot be cleaned very cleanly.

[0007] Technical Solution

[0008] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0009] The utility model is a protective tool for spraying heat-resistant coating on the outer nozzle of a solid rocket engine, comprising:

[0010] The main assembly includes a flange and a mounting hole formed on the upper surface of the flange;

[0011] The anti-blocking assembly includes a plunger clamped in the mounting hole, a first groove provided on the lower surface of the plunger, a first T-shaped column clamped in the first groove, a second groove provided on the upper surface of the plunger, and a second T-shaped column screwed in the second groove;

[0012] The disassembly assembly includes a T-shaped connecting post that is injection molded and connected to the top end of the second T-shaped post.

[0013] Furthermore, there are a total of twenty-four mounting holes, which are distributed on the flange in a circular symmetrical manner, and the mounting holes penetrate the flange.

[0014] Furthermore, there are a total of twenty-four groups of anti-blocking components, corresponding one to one with the mounting holes.

[0015] Furthermore, the main body component also includes a nozzle fixed on the lower surface of the flange, and the nozzle is located in the middle of the flange.

[0016] Furthermore, the disassembly assembly also includes a first clamping block clamped on the upper section of the T-shaped connecting column and an arc-shaped fixing plate welded to the upper end of the first clamping block.

[0017] Furthermore, the disassembly assembly also includes an arc-shaped through hole opened in the middle of the arc-shaped fixing plate, an arc-shaped connecting plate movably connected in the arc-shaped through hole, and a second clamping block welded to the lower end of the arc-shaped connecting plate.

[0018] Furthermore, the disassembly assembly also includes spring columns connected to both ends of the upper surface of the arc-shaped fixing plate by screws, and the other end of the spring column is connected to the side of the arc-shaped connecting plate by screws.

[0019] Furthermore, the disassembly assembly also includes a pull plate welded to the middle of the upper surface of the arc-shaped fixing plate, and the pull plate is located in the middle of the side of the arc-shaped through hole.

[0020] Beneficial Effects

[0021] Compared with the prior art, the advantages of the present invention are:

[0022] 1. The utility model, through the anti-blocking component, engages the injection-molded plunger in the mounting hole, then engages the first T-shaped column in the first groove, and screws the second T-shaped column in the second groove, so that the first T-shaped column and the second T-shaped column are fitted at both ends of the mounting hole to ensure that the coating will not flow into the mounting hole during spraying. This arrangement avoids the large amount of labor required for processing the mounting hole after spraying.

[0023] 2. According to the utility model, a disassembly assembly is provided, and the first clamping block below the arc-shaped fixed plate can be clamped on the upper section of the T-shaped connecting column. The pull plate and the arc-shaped connecting plate are pulled to make the second clamping block clamped on the upper section of the T-shaped connecting column. By pulling the pull plate, the arc-shaped fixed plate and the first clamping block and the second clamping block are driven to move upward, and the T-shaped connecting column is driven to move upward, and the plunger is driven to move out of the mounting hole. This arrangement can disassemble multiple groups of plungers at one time, thereby improving work efficiency.

[0024] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0027] Figure 2 This is a schematic diagram of the main component structure of the utility model;

[0028] Figure 3 This is a schematic diagram of the anti-blocking component of the utility model from a first perspective;

[0029] Figure 4 This is a schematic diagram of the anti-blocking component of the utility model from a second viewing angle;

[0030] Figure 5 This is a schematic diagram of the disassembly assembly of the utility model from a first perspective;

[0031] Figure 6 This is a schematic diagram of the disassembly component of the utility model from a second viewing angle.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 10. Flange; 11. Nozzle; 12. Mounting hole; 20. Plunger; 21. First groove; 22. First T-shaped column; 23. Second groove; 24. Second T-shaped column; 30. Arc-shaped fixing plate; 31. T-shaped connecting column; 32. First clamping block; 33. Arc-shaped connecting plate; 34. Second clamping block; 35. Arc-shaped through hole; 36. Spring column; 37. Pull plate. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0036] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] Embodiment 1

[0038] See also Figure 1-4 As shown, this embodiment is a solid rocket engine nozzle external heat protection coating spraying protection tooling, including:

[0039] The main body assembly includes a flange 10 and a mounting hole 12 formed on the upper surface of the flange 10;

[0040] There are 24 mounting holes 12, which are symmetrically distributed on the flange 10 in a circular shape, and the mounting holes 12 penetrate the flange 10;

[0041] The flange 10 and the mounting hole 12 serve as a connection;

[0042] The anti-blocking assembly includes a plunger 20 clamped in the mounting hole 12, a first groove 21 provided on the lower surface of the plunger 20, a first T-shaped column 22 clamped in the first groove 21, a second groove 23 provided on the upper surface of the plunger 20, and a second T-shaped column 24 screwed in the second groove 23;

[0043] There are a total of twenty-four groups of anti-blocking components, corresponding one to one with the mounting holes 12;

[0044] The plunger 20 has an anti-blocking function, the first groove 21 and the second groove 23 have a connecting function, the first T-shaped column 22 and the second T-shaped column 24 have a blocking function, and the plunger 20, the first T-shaped column 22 and the second T-shaped column 24 are injection molded. The plunger 20 has a diameter of 12.8±0.01mm and a length of 14.5±0.01mm, so that it can completely fit in the empty space of the flange 10;

[0045] The main assembly further includes a nozzle 11 fixed to the lower surface of the flange 10, and the nozzle 11 is located in the middle of the flange 10;

[0046] Nozzle 11 effectively converts the heat energy generated by combustion into thrust, and provides functions such as thermal protection, flow guidance and stability to ensure the normal operation and performance of the rocket.

[0047] Working principle:

[0048] Insert the plunger 20 into the mounting hole 12, insert the first T-shaped column 22 into the first groove 21, make the first T-shaped column 22 fit with the lower surface of the mounting hole 12, rotate the second T-shaped column 24, screw the second T-shaped column 24 into the second groove 23, and make the second T-shaped column 24 fit with the upper surface of the mounting hole 12.

[0049] This step can protect the mounting hole 12 during spraying to prevent the coating from flowing into the mounting hole 12 .

[0050] Embodiment 2

[0051] See also Figure 5-6As shown, this embodiment is based on the above embodiment 1 and also includes:

[0052] The disassembly assembly includes a T-shaped connecting post 31 which is injection molded and connected to the top end of the second T-shaped post 24;

[0053] The T-shaped connecting column 31 serves as a connection;

[0054] The disassembly assembly also includes a first clamping block 32 clamped on the upper section of the T-shaped connecting column 31, and an arc-shaped fixing plate 30 welded on the upper end of the first clamping block 32;

[0055] The arc-shaped fixing plate 30 and the first clamping block 32 play a connecting role;

[0056] The disassembly assembly further includes an arc-shaped through hole 35 provided in the middle of the arc-shaped fixing plate 30, an arc-shaped connecting plate 33 movably connected in the arc-shaped through hole 35, and a second clamping block 34 welded to the lower end of the arc-shaped connecting plate 33;

[0057] The arc-shaped through hole 35 provides a movable space, and the arc-shaped connecting plate 33 and the second clamping block 34 play a connecting role;

[0058] The disassembly assembly also includes spring columns 36 connected to both ends of the upper surface of the arc-shaped fixing plate 30 by screws, and the other end of the spring column 36 is connected to the side of the arc-shaped connecting plate 33 by screws;

[0059] The spring column 36 facilitates the reset of the arc-shaped connecting plate 33;

[0060] The disassembly assembly further includes a pull plate 37 welded to the middle of the upper surface of the arc-shaped fixing plate 30, and the pull plate 37 is located in the middle of the side of the arc-shaped through hole 35;

[0061] The pull plate 37 is convenient for holding and operating the arc-shaped fixing plate 30 , and anti-slip points are welded on the side surfaces of the pull plate 37 .

[0062] Working principle:

[0063] Hold the pull plate 37, place the arc-shaped fixing plate 30 above the T-shaped connecting column 31, and move the arc-shaped fixing plate 30 so that the first clamping block 32 is engaged with the lower surface of the upper section of the T-shaped connecting column 31;

[0064] Pull the arc-shaped connecting plate 33 to drive the second clamping block 34 to move in the arc-shaped through hole 35, so that the second clamping block 34 is engaged with the lower surface of the upper section of the T-shaped connecting column 31, and the spring column 36 is compressed at the same time;

[0065] Pull the pull plate 37 and the arc-shaped connecting plate 33 upward to drive the arc-shaped fixing plate 30 upward, drive the first clamping block 32 and the second clamping block 34 upward, drive the T-shaped connecting column 31 upward, and pull the plunger 20 out of the mounting hole 12;

[0066] At this time, the first T-shaped column 22 is blocked by the flange 10 and disengages from the first groove 21;

[0067] Loosen the arc-shaped connecting plate 33. Under the action of the spring column 36, the arc-shaped connecting plate 33 and the second clamping block 34 are separated from the T-shaped connecting column 31, and the plunger 20 is recovered;

[0068] After all the plungers 20 are removed in sequence, the first T-shaped column 22 below the flange 10 can be recovered.

[0069] In this step, multiple groups of plungers 20 can be disassembled at one time, thereby improving work efficiency.

[0070] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A protective tool for spraying thermal protection coating on the nozzle of a solid rocket engine, characterized in that: include: The main body assembly comprises a flange (10) and a mounting hole (12) provided on the upper surface of the flange (10); An anti-blocking assembly comprises a plunger (20) clamped in a mounting hole (12), a first groove (21) provided on a lower surface of the plunger (20), a first T-shaped column (22) clamped in the first groove (21), a second groove (23) provided on an upper surface of the plunger (20), and a second T-shaped column (24) screwed in the second groove (23); The disassembly assembly includes a T-shaped connecting column (31) which is injection molded and connected to the top end of the second T-shaped column (24).

2. A solid rocket engine nozzle outer heat protection coating spraying protective tooling according to claim 1, characterized in that: There are a total of twenty-four mounting holes (12) which are distributed on the flange (10) in a circular and symmetrical manner, and the mounting holes (12) penetrate the flange (10).

3. The protective tooling for spraying thermal protection coating on the nozzle of a solid rocket engine according to claim 1, characterized in that: There are a total of twenty-four groups of anti-blocking components, corresponding one to one with the mounting holes (12).

4. The solid rocket engine nozzle outer heat protection coating spraying protective tooling according to claim 1, characterized in that: The main body component also includes a nozzle (11) fixed on the lower surface of the flange (10), and the nozzle (11) is located in the middle of the flange (10).

5. The solid rocket engine nozzle outer heat protection coating spraying protective tooling according to claim 1, characterized in that: The disassembly assembly also includes a first clamping block (32) clamped on the upper section of the T-shaped connecting column (31) and an arc-shaped fixing plate (30) welded to the upper end of the first clamping block (32).

6. A solid rocket engine nozzle outer heat protection coating spraying protective tooling according to claim 5, characterized in that: The disassembly assembly also includes an arc-shaped through hole (35) opened in the middle of the arc-shaped fixing plate (30), an arc-shaped connecting plate (33) movably connected in the arc-shaped through hole (35), and a second clamping block (34) welded to the lower end of the arc-shaped connecting plate (33).

7. The solid rocket engine nozzle outer heat protection coating spraying protective tooling according to claim 5, characterized in that: The disassembly assembly also includes spring columns (36) connected to both ends of the upper surface of the arc-shaped fixing plate (30) by screws, and the other end of the spring column (36) is connected to the side of the arc-shaped connecting plate (33) by screws.

8. The solid rocket engine nozzle outer heat protection coating spraying protective tooling according to claim 5, characterized in that: The disassembly assembly further comprises a pull plate (37) welded to the middle of the upper surface of the arc-shaped fixing plate (30), and the pull plate (37) is located at the middle position of the side of the arc-shaped through hole (35).

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