CN209892888U - Rubber corrugated hose special for airplane wing deicing system - Google Patents
Rubber corrugated hose special for airplane wing deicing system Download PDFInfo
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- CN209892888U CN209892888U CN201920727203.9U CN201920727203U CN209892888U CN 209892888 U CN209892888 U CN 209892888U CN 201920727203 U CN201920727203 U CN 201920727203U CN 209892888 U CN209892888 U CN 209892888U
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Abstract
A rubber corrugated hose special for an airplane wing deicing system belongs to rubber products and comprises an inner rubber layer and a reinforced outer protective layer, wherein the inner rubber layer is a silicon rubber pure rubber layer; the reinforced outer protective layer is formed by coating and pasting five layers of glass fiber cloth which is tackified, calendered and hung with silicon rubber layer by layer; compared with the prior art, the pipe body has simple and compact structure, reduced wall thickness, light weight, small smooth resistance of the inner wall and obviously improved high-temperature and high-pressure resistance, can work for a long time at 250 ℃, prolongs the service life and the first turning time of the part, ensures the safety coefficient and meets the technical requirements of a host design department.
Description
Technical Field
The utility model belongs to rubber products, especially special gas transmission corrugated hose of aircraft wing deicing system.
Background
At present, the butt joint of pipelines of wing deicing systems of airplanes made in China are connected by adopting rubber corrugated hoses so as to compensate the deformation caused by thermal expansion and cold contraction or vibration of the wing deicing pipelines. In order to meet the requirements of working media and working environment, the corrugated hose has the performances of high and low temperature resistance, temperature impact resistance, vibration resistance, humidity and heat resistance, mould resistance, salt mist resistance, sand wind and rain resistance, flex resistance, compensation expansion and the like. The existing rubber corrugated hose is formed by sticking seven layers of corrugated fiber cloth subjected to gluing treatment outside a nitrile pure rubber inner pipe as a reinforcing protective layer. Because the number of the layers of the reinforced protective layer is too large, a four-petal core mold without accurate limit is used for sleeving the cylindrical pipe core during molding, the quality of the inner wall of a finished product is influenced or the defect of glue leakage is generated, the wall thickness of the pipe body is thick, the structure is loose, the compressive strength is low, the high-temperature resistant grade can only be maintained at 180 ℃ for long-term work, and severe cracking and damage can be generated when the pipe body works at 250 ℃. With the rapid development of the aviation industry in China, higher requirements are put forward on the safety, the service life, the first turn time and the high temperature resistance grade of airplane accessories, and the development of a special rubber corrugated pipe for an airplane wing deicing system is imperative in order to meet the requirement of the generation change of domestic airplanes.
SUMMERY OF THE UTILITY MODEL
The utility model aims at developing a special rubber corrugated hose for an airplane wing deicing system, which has high temperature resistance and long-term work at 250 ℃ and can ensure that the leakage is not leaked for 5min under the pressure of 0.72 MPa.
In order to achieve the purpose, the adopted technical scheme is to develop a special rubber corrugated hose for an airplane wing deicing system, which consists of an inner rubber layer and a reinforced outer protective layer, wherein the inner rubber layer is a pure silicone rubber layer; the reinforced outer protective layer is formed by coating and pasting five layers of glass fiber cloth which is tackified, calendered and hung with silicon rubber layer by layer; the coating and sticking angle of each layer of glass fiber cloth in the reinforced outer protective layer is 45 degrees between the radial fiber and the axial direction of the pipe body, and the layers are formed in a left-right staggered mode.
Compared with the prior art, the utility model, body simple structure is inseparable, and wall thickness attenuate, the volume is light, inner wall smooth resistance is little, high temperature resistant high pressure performance obviously improves, can work for a long time under the 250 ℃ condition, has prolonged the life of this part and first turn over time, factor of safety can guarantee, has reached the technical requirement of host computer design department.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure 1-is the inner glue layer 2-strengthens the outer protective layer.
Detailed Description
The structure and the manufacturing method of the present invention are described in detail below with reference to the accompanying drawings:
as shown in the figure, the utility model is composed of an inner rubber layer 1 and a reinforced outer protective layer 2, wherein the inner rubber layer 1 is a silicon rubber pure rubber layer; the reinforced outer protective layer 2 is formed by coating and pasting five layers of glass fiber cloth which is tackified, calendered and hung with silicon rubber layer by layer; the coating and sticking angle of each layer of glass fiber cloth in the reinforced outer protective layer 2 is 45 degrees between the radial fiber and the axial direction of the pipe body, and the layers are staggered left and right.
The manufacturing method comprises the following steps:
(1) uniformly coating talcum powder on the surface of a detachable metal core rod with accurately positioned corrugated sections;
(2) coating a silica gel mixing rubber sheet outside the metal core rod, and compacting by a hand roller to finish the molding of the inner rubber layer 1;
(3) winding the film with dry wrapping cloth, shaping for 10 ~ 15min, and removing the dry wrapping cloth;
(4) coating two layers of glass fiber cloth raw rubberized fabric which is subjected to tackifying treatment and is calendered and hung with silicon rubber outside the inner rubber layer 1, wherein the coating and sticking angle is 45 degrees, winding the outer layer with dry wrapping cloth for shaping for 10 ~ 15min, and removing the dry wrapping cloth;
(5) continuously coating three layers of glass fiber cloth which is subjected to tackifying treatment and is rolled and hung with silicon rubber outside the pipe body, winding the outer shaping of the glass fiber cloth by using dry wrapping cloth for 10 ~ 15min, and removing the dry wrapping cloth, thereby finishing the forming procedure of the reinforced outer protective layer 2;
(6) reversely winding the transparent adhesive tape outside the reinforced outer protective layer 2, and then uniformly coating talcum powder outside the tube body for standing for 10 min;
(7) wrapping the outermost layer with water cloth, putting into a vulcanizing tank for first-stage vulcanization under the conditions of 151 ℃ and 0.4MPa for 60min, and then removing the core;
(8) placing the tube body after core removal into a high-temperature aging box for secondary vulcanization, wherein the vulcanization condition is that the temperature is increased from room temperature to 151 ℃ within one hour, and the temperature is increased from 151 ℃ to 250 ℃ within one hour, and the temperature is kept for 4 hours;
(9) and (3) cutting the hose body vulcanized in the 2 sections into a fixed length according to the specified size by a lathe, and finishing the manufacture of a finished product.
Claims (1)
1. The rubber corrugated hose special for the airplane wing deicing system consists of an inner rubber layer and a reinforced outer protective layer, and is characterized in that the inner rubber layer is a silicon rubber pure rubber layer; the reinforced outer protective layer is formed by coating and pasting five layers of glass fiber cloth which is tackified, calendered and hung with silicon rubber layer by layer; the coating and sticking angle of each layer of glass fiber cloth in the reinforced outer protective layer is 45 degrees between the radial fiber and the axial direction of the pipe body, and the layers are formed in a left-right staggered mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920727203.9U CN209892888U (en) | 2019-05-21 | 2019-05-21 | Rubber corrugated hose special for airplane wing deicing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920727203.9U CN209892888U (en) | 2019-05-21 | 2019-05-21 | Rubber corrugated hose special for airplane wing deicing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209892888U true CN209892888U (en) | 2020-01-03 |
Family
ID=69001095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920727203.9U Active CN209892888U (en) | 2019-05-21 | 2019-05-21 | Rubber corrugated hose special for airplane wing deicing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209892888U (en) |
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2019
- 2019-05-21 CN CN201920727203.9U patent/CN209892888U/en active Active
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