CN214196503U - High-reliability multilayer composite material spray pipe - Google Patents
High-reliability multilayer composite material spray pipe Download PDFInfo
- Publication number
- CN214196503U CN214196503U CN202022974930.0U CN202022974930U CN214196503U CN 214196503 U CN214196503 U CN 214196503U CN 202022974930 U CN202022974930 U CN 202022974930U CN 214196503 U CN214196503 U CN 214196503U
- Authority
- CN
- China
- Prior art keywords
- section
- metal shell
- wall
- lining
- section metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The utility model discloses a high-reliability multilayer composite material spray pipe, which comprises a front section metal shell, a rear section metal shell, a front section heat insulation lining, a front section scouring-resistant lining, a rear section metal shell, a rear section scouring-resistant lining and a throat lining; the front end of the conical inner wall of the rear section metal shell is provided with an annular positioning table, and the inner surface of the annular positioning table is a conical surface expanding backwards; the outer wall of the front end of the rear-section heat-insulating lining is in compression joint with the inner conical surface of the annular positioning table at the front end of the conical inner wall of the rear-section metal shell; the rear end of the conical inner wall of the rear section metal shell is provided with an annular baffle table; and the annular baffle table at the rear end of the conical inner wall of the rear-section metal shell is pressed into the rear end face of the rear-section scouring-resistant lining. The utility model discloses a multilayer combined material spray tube avoids double-deck combined material inside lining to be peeled off in advance at engine working process, has improved engine operational reliability.
Description
Technical Field
The utility model relates to a high reliability multilayer combined material spray tube belongs to engine technical field.
Background
With the increase of the range requirement of rocket engines, the requirement on the nozzles of main parts of the engines is higher and higher, the traditional single-layer thermal protection structure nozzles cannot meet the severe working environment of high-energy propellants for long working time, so that the composite structure nozzles with large expansion ratio and multi-layer thermal protection become a design trend, and the more thermal protection layers and the more complex structure, the quality and reliability problems in the processing, working and storage processes of the nozzles are often caused. The composite structure spray pipe is generally mainly composed of a front section and a rear section of the spray pipe, the front section and the rear section of the spray pipe are respectively composed of a front section metal shell, a rear section metal shell and a double-layer composite material lining, the double-layer composite material lining is molded on the front section metal shell and the rear section metal shell in two layers for two times, however, the combining capacity of the double-layer composite material lining and the metal shell is poor, particularly, between the double-layer composite material lining and the rear section metal shell, when the engine is subjected to large gas thrust force in the axial direction backwards, the lining can be stripped from the rear section metal shell due to the fact that the lining is not supported by the metal shell backwards, and the requirement of set technical indexes cannot be met.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the inside lining peeled off with back end metal casing in advance in the engine during operation of the back end of traditional composite construction spray tube, and providing a high reliability multilayer combined material spray tube.
The utility model aims at realizing through the following technical scheme:
the utility model discloses a high-reliability multilayer composite material spray pipe, which comprises a front section metal shell and a rear section metal shell which are butted by front and rear threads, a front section heat-insulating lining and a front section scouring-resistant lining which are molded on the conical inner wall of the front section metal shell in two layers and two times, a rear section heat-insulating lining and a rear section scouring-resistant lining which are molded on the conical inner wall of the rear section metal shell in two layers and two times, and a throat lining which is cemented at the inner side of the butted part of the front section metal shell and the rear section metal shell;
the front end of the conical inner wall of the rear section metal shell is provided with an annular positioning table, and the inner surface of the annular positioning table is a conical surface expanding backwards; when the rear-section heat-insulating lining is fixed by mould pressing, the outer wall of the front end of the rear-section heat-insulating lining is pressed on the inner conical surface of the annular positioning table at the front end of the conical inner wall of the rear-section metal shell; the rear end of the conical inner wall of the rear section metal shell is provided with an annular baffle table; and when the rear-section scouring-resistant lining is fixed by mould pressing, the annular baffle table at the rear end of the conical inner wall of the rear-section metal shell is pressed into the rear end face of the rear-section scouring-resistant lining.
The rear end of the annular positioning table is in transition with the conical inner wall of the rear-section metal shell through an arc surface; the angle of the inner conical surface of the annular positioning table is 5-10 degrees, preferably 5 degrees, and the double-layer lining is prevented from generating cracks inside due to stress concentration in the mould pressing process.
The annular keeps off and follows on the preceding terminal surface of platform for the ladder face, just the annular keeps off and is followed each ladder department of ladder face on the terminal surface before the platform and be the cambered surface transition.
The outer wall of the rear-section heat-insulating lining is provided with axially and uniformly distributed annular positioning grooves, the rear-section scouring-resistant lining is fixed in a mould pressing mode, the inner wall of the rear-section scouring-resistant lining is pressed into the annular positioning grooves in the outer wall of the rear-section heat-insulating lining, and the axial binding force between the rear-section heat-insulating lining and the rear-section scouring-resistant lining is strengthened.
The conical side walls of the front section metal shell and the rear section metal shell are respectively provided with a positioning hole for reinforcing the axial binding force between the front section metal shell and the inner side lining and between the rear section metal shell and the inner side lining.
Advantageous effects
The utility model discloses a multilayer combined material spray tube under the prerequisite that does not reduce product function, performance, can improve double-deck compound inside lining mould pressing manufacturability, improves processingquality, guarantees the axial cohesion of metal casing and double-deck combined material inside lining, avoids double-deck combined material inside lining to be peeled off in advance at engine working process, has improved engine operational reliability.
Drawings
FIG. 1 is a schematic structural view of a multi-layer composite nozzle of the present invention;
FIG. 2 is a schematic structural view of a rear section of a nozzle in the multi-layer composite nozzle of the present invention;
FIG. 3 is an enlarged view of a portion of the front end of the rear section of the nozzle of the multi-layer composite nozzle of the present invention;
FIG. 4 is an enlarged view of a portion of the rear end of the rear section of the nozzle in the multi-layer composite nozzle of the present invention;
in the figure, 1-front section metal housing; 2-front section heat insulation lining; 3-front segment scouring resistant lining; 4-throat liner; 5-rear section metal shell; 6-rear section heat insulation lining; and 7-rear section scouring-resistant lining.
Detailed Description
The invention will be further described with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1, the utility model discloses a high reliability multilayer composite material spray tube, including front section metal casing 1 and back section metal casing 5 that screw thread butt joint around, divide two-layer two-time mould in the anterior section metal casing 1 toper inner wall anterior segment heat insulating lining 2 and anterior segment resistant to erode inside lining 3, divide two-layer two-time mould in the back section metal casing 5 toper inner wall back section heat insulating lining 6 and back section resistant to erode inside lining 7, and glue in the front section metal casing 1 with the inside throat lining 4 of back section metal casing 5 butt joint;
the structure of the rear section of the nozzle is shown in FIGS. 2-4;
an annular positioning table is arranged at the front end of the conical inner wall of the rear-section metal shell 5, the inner surface of the annular positioning table is a conical surface expanding backwards, and the rear end of the annular positioning table and the conical inner wall of the rear-section metal shell 5 are in transition through an arc surface; the angle of the inner conical surface of the annular positioning table is 5 degrees; when the rear-section heat-insulating lining 6 is fixed by mould pressing, the outer wall of the front end of the rear-section heat-insulating lining 6 is pressed on the inner conical surface of the annular positioning table at the front end of the conical inner wall of the rear-section metal shell 5, as shown in fig. 3; the rear end of the conical inner wall of the rear section metal shell 5 is provided with an annular baffle table; the upper edge of the front end face of the annular baffle table is a step face, and each step of the upper edge of the step face of the front end face of the annular baffle table is in arc surface transition; when the rear-section scouring-resistant lining 7 is fixed by die pressing, the annular baffle table at the rear end of the conical inner wall of the rear-section metal shell 5 is pressed into the rear end face of the rear-section scouring-resistant lining 7, as shown in fig. 4.
The outer wall of the rear-section heat-insulating lining 6 is provided with axially and uniformly distributed annular positioning grooves, the rear-section scouring-resistant lining 7 is fixed in a mould pressing mode, the inner wall of the rear-section scouring-resistant lining 7 is pressed into the annular positioning grooves in the outer wall of the rear-section heat-insulating lining 6, and the axial binding force between the rear-section heat-insulating lining 6 and the rear-section scouring-resistant lining 7 is strengthened.
Locating holes are formed in the conical side walls of the front section metal shell 1 and the rear section metal shell 5 and used for strengthening axial binding force between the front section metal shell 1 and the rear section metal shell 5 and the inner side lining.
Claims (8)
1. A high-reliability multilayer composite material spray pipe comprises a front-section metal shell and a rear-section metal shell which are in butt joint with each other through front and rear threads, a front-section heat-insulating lining and a front-section scouring-resistant lining which are molded on the conical inner wall of the front-section metal shell in two layers and twice, a rear-section heat-insulating lining and a rear-section scouring-resistant lining which are molded on the conical inner wall of the rear-section metal shell in two layers and twice, and a throat lining which is cemented on the inner side of the butt joint of the front-section metal shell and the rear-section metal shell; the method is characterized in that:
the front end of the conical inner wall of the rear section metal shell is provided with an annular positioning table, and the inner surface of the annular positioning table is a conical surface expanding backwards; when the rear-section heat-insulating lining is fixed by mould pressing, the outer wall of the front end of the rear-section heat-insulating lining is pressed on the inner conical surface of the annular positioning table at the front end of the conical inner wall of the rear-section metal shell; the rear end of the conical inner wall of the rear section metal shell is provided with an annular baffle table; and when the rear-section scouring-resistant lining is fixed by mould pressing, the annular baffle table at the rear end of the conical inner wall of the rear-section metal shell is pressed into the rear end face of the rear-section scouring-resistant lining.
2. The high reliability multi-layer composite nozzle of claim 1, wherein: the rear end of the annular positioning table is in transition with the conical inner wall of the rear section metal shell through an arc surface.
3. The high reliability multi-layer composite nozzle of claim 1, wherein: the angle of the inner conical surface of the annular positioning table is 5-10 degrees.
4. The high reliability multi-layer composite nozzle of claim 1, wherein: the angle of the inner conical surface of the annular positioning table is 5 degrees.
5. The high reliability multi-layer composite nozzle of claim 1, wherein: the upper edge of the front end face of the annular baffle table is a stepped surface.
6. The high reliability multi-layer composite nozzle of claim 5, wherein: each step department along the ladder face on the annular keeps off the platform front end face is the cambered surface transition.
7. The high reliability multi-layer composite nozzle of claim 1, wherein: the outer wall of the rear-section heat-insulating lining is provided with annular positioning grooves which are uniformly distributed in the axial direction, and when the rear-section scouring-resistant lining is fixed in a mould pressing mode, the inner wall of the rear-section scouring-resistant lining is pressed into the annular positioning grooves in the outer wall of the rear-section heat-insulating lining.
8. A high reliability multilayer composite nozzle as claimed in any one of claims 1 to 7 wherein: the front section metal shell and the back section metal shell are provided with positioning holes on the conical side walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022974930.0U CN214196503U (en) | 2020-12-08 | 2020-12-08 | High-reliability multilayer composite material spray pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022974930.0U CN214196503U (en) | 2020-12-08 | 2020-12-08 | High-reliability multilayer composite material spray pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214196503U true CN214196503U (en) | 2021-09-14 |
Family
ID=77653219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022974930.0U Active CN214196503U (en) | 2020-12-08 | 2020-12-08 | High-reliability multilayer composite material spray pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214196503U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483282A (en) * | 2020-12-08 | 2021-03-12 | 晋西工业集团有限责任公司 | High-reliability multilayer composite material spray pipe |
-
2020
- 2020-12-08 CN CN202022974930.0U patent/CN214196503U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112483282A (en) * | 2020-12-08 | 2021-03-12 | 晋西工业集团有限责任公司 | High-reliability multilayer composite material spray pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214196503U (en) | High-reliability multilayer composite material spray pipe | |
| CN111810318B (en) | Single-chamber double-thrust solid rocket engine and rocket | |
| JP2020511310A (en) | Manufacturing method of composite steel pipe | |
| JP2004169702A (en) | Rocket engine combustion chamber having a number of conformal throat supports | |
| CN210714882U (en) | Rocket engine jet pipe | |
| Quentmeyer | Rocket combustion chamber life-enhancing design concepts | |
| CN112196632B (en) | Prepressing turbine inlet shell and machining method thereof | |
| CN112483282A (en) | High-reliability multilayer composite material spray pipe | |
| CN110080909A (en) | A kind of jet pipe of solid propellant rocket | |
| US20170057004A1 (en) | Tool and method for bonding layers of a metallic axisymmetric structure having complex curvatures | |
| CN107838572B (en) | Welding method of pintle type injector | |
| CN105736177A (en) | Tailpipe nozzle heat insulation structure for double-layer composite material formed integrally | |
| CN206319967U (en) | A kind of empty body of the nonmetallic rocket engine of monoblock type | |
| CN116181521A (en) | Single-chamber double-thrust solid rocket engine charging structure and process | |
| CN114412659A (en) | Combined type conical section composite shell structure | |
| CN114889157A (en) | Engine shell and spray pipe integrated structure and preparation method thereof | |
| CN213021255U (en) | Protection mechanism for sealing rear ends of spray pipe and actuating mechanism | |
| CN107956597A (en) | A kind of small-sized jet pipe to work long hours | |
| CN113719380A (en) | Endurance engine tail pipe lining blank and pressing die and manufacturing method thereof | |
| CN206317287U (en) | A kind of mould for being used to process the empty body of the nonmetallic rocket engine of monoblock type | |
| EP1033198A2 (en) | Method for producing a gas generator of welded-brazed construction | |
| CN218467729U (en) | Long-time low-thrust spray pipe diffusion section | |
| CN217890083U (en) | Mechanical composite steel pipe | |
| CN219994371U (en) | Eduction tube structure of tower thick wall stainless steel composite sheet pressure vessel bottom | |
| CN106593695A (en) | Integral type nonmetal rocket engine empty body machining process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |