Process for manufacturing a media transfer hose and media transfer hose

Abstract

The application provides a medium transmission hose manufacturing process and a medium transmission hose. The medium transmission hose manufacturing process comprises the following steps: manufacturing an elastic hose; performing mold pressing and shaping on the elastic hose, so that the medium transmission hose can expand to realize oil delivery when a positive pressure is borne, and can maintain a basic shape of the hose when a negative pressure is borne, so that the medium transmission hose can maintain a stable state in each working state; fixing a signal transmission wire harness on an inner surface of the elastic hose to realize stable and reliable signal transmission; and performing vulcanization treatment on the elastic hose to improve strength and elasticity of the elastic hose, to avoid breakage of the elastic hose and the signal transmission wire harness, so as to prolong a service life of the medium transmission hose.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of fuel pipe manufacturing, and particularly relates to a medium transmission hose manufacturing process and a medium transmission hose. BACKGROUND

[0002] The aircraft fuel filling position is far away from the fuel control equipment, and in the actual operation process, the operation personnel at two positions need to frequently communicate to confirm operation information, starting and stopping operation time, etc., which greatly limits the operation efficiency. At present, when the fuel operation is completed, the hose docking device is full of oil, and the hose is too heavy during the recovery process, which requires a large number of operation support personnel, has high labor intensity, and seriously affects the operation efficiency. Therefore, in order to realize efficient aircraft fuel support, it is urgent to provide a light-weight hose capable of realizing signal transmission to support the aircraft fuel operation and light-weight recovery.

[0003] The hose light-weighting can be started from the light-weighting of the hose body itself and the removal of the residual oil in the hose. At present, the available collapsible rubber hose basically meets the light-weighting requirement of the hose. The signal transmission modes of the hose include embedding a signal line in the hose wall and penetrating a signal line in the inner cavity of the hose. These two signal transmission modes have been applied to the non-collapsible rubber hose. However, considering the application in the collapsible rubber hose, for the embedding mode, the collapsible hose wall needs to be continuously compressed and expanded, and the strength of the signal line and the rubber hose is difficult to be unified, which easily causes the damage of the rubber material or the breakage of the signal line, seriously affecting the service life of the hose. For the penetrating mode, after the residual oil in the hose is pumped out, the part of the collapsible hose wrapping the signal line will be obviously protruded, becoming a relatively weak point of the hose structure, which seriously affects the service life of the hose, and the position of the signal line relative to the collapsible hose cannot be controlled every time, so the local reinforcement cannot be achieved. SUMMARY

[0004] The present application provides a medium transmission hose manufacturing process, which can prolong the service life of the hose and reduce the risk of breakage of the signal line.

[0005] The present application provides a medium transmission hose manufacturing process, which includes the following steps: manufacturing an elastic hose; molding and shaping the elastic hose; fixing a signal transmission layer on the inner surface of the elastic hose; and vulcanizing the elastic hose.

[0006] In some optional embodiments, the step of manufacturing the elastic hose includes: extruding a tubular inner liner; inserting a circular fixed mandrel into the inner liner, the outer surface of the fixed mandrel being attached to the inner surface of the inner liner; wrapping a reinforcing layer on the outer surface of the inner liner; wrapping a protective layer on the outer surface of the reinforcing layer; and separating the fixed mandrel from the inner liner.

[0007] In some optional embodiments, before the step of molding the elastic hose, the inner surface of the inner liner is provided with an inner core, so that the inner liner, the reinforcing layer and the protective layer are tightly attached from inside to outside.

[0008] In some optional embodiments, at least a first signal transmission wire bundle and a second signal transmission wire bundle are arranged on the inner surface of the inner liner, and the first signal transmission wire bundle and the second signal transmission wire bundle are symmetric about the center line of the inner liner.

[0009] In some optional embodiments, the step of fixing the signal transmission wire bundle on the inner surface of the elastic hose comprises bonding the inner surface of the inner liner with the signal transmission wire bundle by a rubber sheet.

[0010] In some optional embodiments, the rubber sheet is made of rubber material.

[0011] In some optional embodiments, the inner liner and the protective layer are rubber layers.

[0012] In some optional embodiments, the reinforcing layer is a densely woven layer.

[0013] In another aspect, the application also provides a medium transmission hose, which is manufactured by the manufacturing process of any one of the above medium transmission hoses, and comprises: an elastic hose comprising an inner liner, a reinforcing layer and a protective layer arranged in sequence from inside to outside; a signal transmission layer extending along the length direction of the elastic hose and arranged on the inner surface of the inner liner, wherein the signal transmission layer comprises a first signal transmission wire bundle and a second signal transmission wire bundle, and the first signal transmission wire bundle and the second signal transmission wire bundle are symmetric about the center line of the inner liner.

[0014] In some optional embodiments, the first signal transmission wire bundle and the second signal transmission wire bundle are bonded by a rubber sheet.

[0015] The application has the following beneficial effects:

[0016] As can be seen from the above scheme, the application provides a manufacturing process of a medium transmission hose, which comprises the following steps: manufacturing an elastic hose; molding the elastic hose to make the medium transmission hose expandable to realize oil delivery under positive pressure and maintain the basic shape of the hose under negative pressure, so that the medium transmission hose can maintain a stable state under various working conditions; fixing a signal transmission wire bundle on the inner surface of the elastic hose to realize stable and reliable signal transmission; and vulcanizing the elastic hose to improve the strength and elasticity of the elastic hose, avoid the elastic hose and the signal transmission wire bundle from being broken, and thus prolong the service life of the medium transmission hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a medium transmission hose in an initial state provided by an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A schematic structural diagram of the medium transmission hose of the provided embodiment in an expanded state;

[0019] Figure 3 for Figure 1 A schematic structural diagram of the medium transmission hose of the provided embodiment in a sucked-flat state;

[0020] Figure 4 for Figure 1 An enlarged schematic diagram of a portion of a media transport hose according to a provided embodiment.

[0021] In the figure, 1 is an elastic hose; 11 is an inner lining layer; 12 is a reinforcing layer; 13 is a protective layer; 2 is a signal transmission layer; 21 is a first signal transmission harness; 22 is a second signal transmission harness; and 23 is a film. DETAILED DESCRIPTION

[0022] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0023] The aircraft refueling station is far from the refueling control equipment. During actual operations, operators at both locations must frequently communicate to confirm operation information and start and stop times, significantly limiting efficiency. Furthermore, at the end of refueling operations, the hose docking device is filled with fuel, and the hose is too heavy during the recovery process. This creates a high demand for support personnel and high labor intensity, further impacting operational efficiency. Therefore, to achieve efficient aircraft refueling support, a lightweight hose with signal transmission is urgently needed to support aircraft-side support and lightweight recovery during the refueling process.

[0024] The soft tube lightening can be started from the soft tube body itself lightening and the soft tube residual oil removing, and the current absorbable rubber soft tube basically meets the soft tube lightening requirement. The soft tube signal transmission mode includes the signal line pre-buried in the soft tube wall and the signal line passing through the soft tube inner cavity, and the two signal transmission modes have been applied in the non-absorbable rubber soft tube. However, considering the application in the absorbable rubber soft tube, for the signal line pre-buried mode, the absorbable soft tube wall needs to be continuously compressed and expanded, and the signal line and the rubber soft tube strength are difficult to be unified, so the rubber material is easily damaged or the signal line is easily broken, which seriously affects the service life of the soft tube; for the signal line passing through the soft tube inner cavity mode, after the soft tube residual oil is pumped, the part of the absorbable soft tube wrapping the signal line will be obviously protruded, which becomes the relatively weak point of the soft tube structure, seriously affecting the service life of the soft tube, and since the position of the signal line relative to the absorbable soft tube is uncontrollable each time, the local strengthening cannot be realized.

[0025] The embodiment of the present application provides a manufacturing process of a medium transmission soft tube, which can prolong the service life of the soft tube and reduce the risk of signal line breakage.

[0026] The following will be described in combination with the drawings of the specification Figures 1-4 The manufacturing process of the medium transmission soft tube will be specifically described.

[0027] Figure 1 It is a structure schematic diagram of the initial state of the medium transmission soft tube, at this time, the medium transmission soft tube is not under pressure, the overall shape of the medium transmission soft tube is a dumbbell type, the pipe wall of the two end dumbbell parts is combined with the signal transmission layer 2 to be a dumbbell type, the pipe wall of the middle part is a circle type, and the pipe wall of the remaining part is in a free flexing state. The pipe wall of the two side dumbbell parts fixes the signal transmission layer 2 on the pipe wall of the rubber soft tube inner layer 11 through rubber vulcanization, the rubber for fixing the signal transmission layer 2 needs to completely wrap the core wire, and the outer wall of the signal transmission layer 2 does not directly contact the oil transported in the medium transmission soft tube. Figure 2 It is a structure schematic diagram of the soft tube expansion state, at this time, the medium transmission soft tube is in the oil transportation working condition and bears positive pressure, the overall shape of the medium transmission soft tube is a circle type, except that the pipe wall of the dumbbell part wrapping the signal transmission layer 2 and the free flexing part is expanded, the signal transmission layer 2 embedded in the pipe wall of the middle part also moves the position with the pipe wall.

[0028] Figure 3 It is a structure schematic diagram of the medium transmission soft tube in the collapsed state, at this time, the medium transmission soft tube is in the residual oil recovery working condition and bears negative pressure, the overall shape of the soft tube is a dumbbell type, the pipe wall of the two end dumbbell parts is combined with the core wire to be a dumbbell type, the free flexing part is collapsed to the state that the inner wall of the soft tube is almost contacted, and the middle part still keeps a circle type.

[0029] The application provides a manufacturing process of a medium transmission hose, which comprises the following steps: manufacturing an elastic hose 1; performing die molding on the elastic hose 1; fixing a signal transmission layer 2 on the inner surface of the elastic hose 1; and performing vulcanization treatment on the elastic hose 1.

[0030] Specifically, the application provides a manufacturing process of a medium transmission hose, which comprises the following steps: manufacturing an elastic hose 1; performing die molding on the elastic hose 1, so that the medium transmission hose can expand to realize oil delivery when bearing positive pressure and can maintain the basic shape of the hose when bearing negative pressure, thereby enabling the medium transmission hose to maintain a stable state in each working state; fixing a signal transmission layer 2 on the inner surface of the elastic hose 1 to realize stable and reliable signal transmission; and performing vulcanization treatment on the elastic hose 1, so that the inner surface and the outer surface of the elastic hose 1 have a vulcanization layer, thereby improving the strength and elasticity of the elastic hose 1, avoiding the breakage of the elastic hose 1 and the signal transmission layer 2, and thereby prolonging the service life of the medium transmission hose.

[0031] Further, the medium transmission hose is die molded into a dumbbell shape, and the dumbbell-shaped hose structure can expand to realize oil delivery when bearing positive pressure and can maintain the basic shape of the hose when bearing negative pressure, without obvious bending angles, thereby adapting to the working conditions of repeatedly recovering residual oil.

[0032] In some optional embodiments, the step of manufacturing the elastic hose 1 comprises: processing an extrusion to form a tubular inner liner 11; inserting a circular fixing mandrel into the inner liner 11, with the outer surface of the fixing mandrel being attached to the inner surface of the inner liner 11; wrapping a reinforcing layer 12 around the outer surface of the inner liner 11; wrapping a protective layer 13 around the outer surface of the reinforcing layer 12; and detaching the fixing mandrel from the inner liner 11.

[0033] Specifically, the circular fixing mandrel is inserted into the inner liner 11, with the outer surface of the fixing mandrel being attached to the inner surface of the inner liner 11, so as to support the inner liner 11. The reinforcing layer 12 is wrapped around the outer surface of the inner liner 11, so as to ensure that the hose part, in which the signal transmission layer 2 is arranged on the inner surface of the inner liner 11, can maintain the structural form when bearing negative pressure, thereby preventing the core wire from being bent and broken due to the negative pressure of the hose. The die molding makes the medium transmission hose have the shape of the inserted die molding mandrel, so that the medium transmission hose can expand to realize oil delivery when bearing positive pressure and can maintain the basic shape of the hose when bearing negative pressure, thereby enabling the medium transmission hose to maintain a stable state in each working state.

[0034] Further, the material of the inner liner 11 and the reinforcing layer 12 is rubber material, the elastic hose 1 is vulcanized, the vulcanized elastic hose 1 has the following advantages: improving strength and elasticity, the vulcanization process can change the molecular structure of rubber from linear to three-dimensional network structure, which enhances the interaction between molecular chains, thereby significantly improving the strength and elasticity of rubber. When the vulcanized rubber is subjected to external force, it can better resist deformation and rupture. Improve wear resistance and swelling resistance, crosslinking bonds formed during vulcanization limit the movement of rubber molecules, reducing wear and swelling of rubber under friction and solvent action, so that vulcanized rubber can maintain good performance stability during long-term use. Improve heat resistance and chemical stability, the formation of crosslinking bonds limits the thermal motion of rubber molecular chains, improving the heat resistance of rubber. At the same time, crosslinking reaction reduces the groups or atoms with high chemical activity, making it difficult for aging reaction to occur, improving the chemical stability of rubber.

[0035] In some optional embodiments, before the step of molding and shaping the elastic hose 1, the inner liner 11 is inserted into the inner surface of the inner liner 11, so that the inner liner 11, the reinforcing layer 12 and the protective layer 13 are tightly attached from the inside to the outside.

[0036] Specifically, the fixed core is separated from the inside of the inner liner 11, the inner liner 11 is inserted into the inner surface of the inner liner 11, the reinforcing layer 12 is wrapped with the protective layer 13 on the outer surface, and the protective layer 13 makes the whole medium transmission hose have the functions of wear resistance, outdoor exposure resistance and petroleum-based fuel resistance.

[0037] In some optional embodiments, the first signal transmission wire bundle 21 and the second signal transmission wire bundle 22 are arranged on the inner surface of the inner liner 11, and the first signal transmission wire bundle 21 and the second signal transmission wire bundle 22 are symmetrical about the center line of the inner liner 11.

[0038] In some optional embodiments, the step of fixing the signal transmission layer 2 on the inner surface of the elastic hose 1 includes bonding the inner surface of the inner liner 11 to the first signal transmission wire bundle 21 and the second signal transmission wire bundle 22 by the adhesive film 23.

[0039] Specifically, the material of the film 23 is rubber material. The inner liner 11 and the protective layer 13 are rubber layers. The material of the film 23 is rubber material, when the elastic hose 1 is subjected to vulcanization reaction, the film 23 is also vulcanized, the strength and elasticity are improved, the vulcanization treatment can change the molecular structure of the rubber from linear to three-dimensional network structure, the structure enhances the interaction between molecular chains, thereby significantly improving the strength and elasticity of the rubber, when the elastic hose 1 is in the state of bending, expansion or flattening, the problem that the first signal transmission wire bundle 21 and the second signal transmission wire bundle 22 are pulled off due to the length change of the hose in the working state can be prevented. When the medium transmission hose is used to transport oil outward, the medium transmission hose bears positive pressure, the free bending part of the medium transmission hose is stretched, the whole medium transmission hose is expanded to be approximately circular, and the expansion state of the hose is as shown in Figure 2 When the residual oil in the medium transmission hose is pumped, the medium transmission hose bears negative pressure, the free bending part of the hose is flattened, and the hose is basically in the shape of dumbbell, as shown in Figure 3 .

[0040] In some optional embodiments, the reinforcing layer 12 is a dense woven layer.

[0041] Specifically, the reinforcing layer 12 is a dense woven layer, so that when the hose part of the embedded core wire can still maintain the structural form when bearing negative pressure, the signal transmission layer 2 is prevented from being bent due to the negative pressure of the hose and being broken.

[0042] On the other hand, the application also provides a medium transmission hose, which is realized by the manufacturing process of any one of the above-mentioned medium transmission hoses, and the medium transmission hose comprises: an elastic hose 1, comprising an inner liner 11, a reinforcing layer 12 and a protective layer 13 which are sequentially stacked from inside to outside; a signal transmission layer 2 extending along the length direction of the elastic hose 1 and arranged on the inner surface of the inner liner 11, the signal transmission layer 2 comprising a first signal transmission wire bundle 21 and a second signal transmission wire bundle 22, the first signal transmission wire bundle 21 and the second signal transmission wire bundle 22 being symmetric about the center line of the inner liner 11.

[0043] Specifically, the reinforcing layer 12 is wrapped around the outer surface of the inner lining layer 11 to ensure that the hose portion of the embedded core wire can maintain its structural form when subjected to negative pressure, preventing the signal transmission layer from bending and breaking due to the negative pressure on the hose. The inner surface of the inner lining layer 11 is provided with the first signal transmission wire bundle 21 and the second signal transmission wire bundle 22 to achieve stable and reliable signal transmission. The outer surface of the reinforcing layer 12 includes the protective layer 13, which makes the entire medium transmission hose resistant to wear, outdoor exposure, and petroleum-based fuel. The elastic hose 1 is vulcanized to improve its strength and elasticity. The medium transmission hose is molded to have the shape of a fixed mandrel, allowing it to expand when subjected to positive pressure for oil delivery and maintain its basic shape when subjected to negative pressure. This structure allows the medium transmission hose to maintain a stable state in various working conditions and achieves stable and reliable signal transmission.

[0044] Further, the inner lining layer 11, the reinforcing layer 12, and the protective layer 13 of the medium transmission hose are made of rubber, dense braided layer, and conductive synthetic rubber outer layer, respectively. The interlayer adhesion strength is strengthened to prevent peeling between different layers of the medium transmission hose after repeated oil delivery and recovery cycles, increasing the service life of the hose.

[0045] In some optional embodiments, the reinforcing layer 12 is a dense braided layer.

[0046] In some optional embodiments, the protective layer 13 is a rubber layer, which makes the entire medium transmission hose resistant to wear, outdoor exposure, and petroleum-based fuel.

[0047] In some optional embodiments, the inner lining layer 11 and the protective layer 13 are rubber layers.

[0048] Further, the inner lining layer 11 and the protective layer 13 are rubber layers, which allow the medium transmission hose to expand when subjected to positive pressure for oil delivery and maintain its basic shape when subjected to negative pressure, thereby maintaining a stable state in various working conditions. The first signal transmission wire bundle 21 and the second signal transmission wire bundle 22 are fixed to the inner surface of the elastic hose 1 to achieve stable and reliable signal transmission. The elastic hose 1 is vulcanized to improve its strength and elasticity, preventing the elastic hose 1, the first signal transmission wire bundle 21, and the second signal transmission wire bundle 22 from breaking, thereby increasing the service life of the medium transmission hose.

[0049] In some optional embodiments, the first signal transmission wire bundle 21 and the second signal transmission wire bundle 22 are bonded by a rubber sheet 23.

[0050] Specifically, the material of the rubber sheet 23 is rubber. The material of the rubber sheet 23 is rubber material. The inner layer 11 and the protective layer 13 are rubber layers. The material of the rubber sheet 23 is rubber material, and when the elastic hose 1 is subjected to a vulcanization reaction, the rubber sheet 23 is also vulcanized, thereby improving the strength and elasticity.

[0051] The above is the preferred embodiment of the present application, it should be noted that for those skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A process for making a dielectric transmission hose, characterized in that, The method comprises the following steps: manufacturing an elastic tube; molding the elastic tube; laying a signal transmission layer on the inner surface of the elastic tube; vulcanizing the elastic tube to form a medium transmission tube; when the medium transmission tube is not under pressure, the overall shape of the medium transmission tube is dumbbell-shaped, the pipe wall of the dumbbell-shaped parts at both ends is combined with the signal transmission layer to form a dumbbell shape, the pipe wall of the middle part is circular, and the pipe wall of the remaining part is in a free flexing state.

2. The process for making a media transfer hose of claim 1, wherein, The step of manufacturing the elastic tube comprises: processing an extrusion-formed tubular inner liner layer; inserting a circular fixed mandrel into the inner liner layer, and the outer surface of the fixed mandrel is in close contact with the inner surface of the inner liner layer; wrapping a reinforcing layer on the outer surface of the inner liner layer; wrapping a protective layer on the outer surface of the reinforcing layer; removing the fixed mandrel from the inner liner layer.

3. The process for making a media transfer hose of claim 2, wherein, Before the step of molding the elastic tube, a molding mandrel is inserted into the inner liner layer, so that the inner liner layer, the reinforcing layer, and the protective layer are tightly attached from the inside out.

4. The process for making a media transfer hose of claim 3, wherein, At least a first signal transmission wire bundle and a second signal transmission wire bundle are laid on the inner surface of the inner liner layer, and the first signal transmission wire bundle and the second signal transmission wire bundle are symmetric about the center line of the inner liner layer.

5. The process for making a media transfer hose of claim 4, wherein, The step of fixing the signal transmission wire bundle on the inner surface of the elastic tube comprises bonding the signal transmission wire bundle to the inner surface of the inner liner layer by a rubber sheet.

6. The process for making a media transfer hose of claim 5, wherein, The material of the rubber sheet is rubber.

7. The process of claim 2, wherein, The inner liner layer and the protective layer are rubber layers.

8. The process for making a media transfer hose of claim 7, wherein, The reinforcing layer is a densely woven layer.

9. A media transfer hose, characterized by, The medium transmission tube is manufactured by the manufacturing process of any one of claims 1-8, and the medium transmission tube comprises: an elastic tube (1) comprising an inner liner layer (11), a reinforcing layer (12), and a protective layer (13) arranged in sequence from the inside out; a signal transmission layer (2) extending along the length direction of the elastic tube (1) and arranged on the inner surface of the inner liner layer (11), wherein the signal transmission layer (2) comprises a first signal transmission wire bundle (21) and a second signal transmission wire bundle (22), and the first signal transmission wire bundle (21) and the second signal transmission wire bundle (22) are symmetric about the center line of the inner liner layer (11).

10. The media transfer hose of claim 9, wherein, The first signal transmission wire bundle (21) and the second signal transmission wire bundle (22) are bonded by a rubber sheet (23).

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