Manufacturing process of medium transmission hose and medium transmission hose

Abstract

The invention provides a manufacturing process of a medium transmission hose and the medium transmission hose, and the manufacturing process of the medium transmission hose at least comprises the following methods: manufacturing an elastic hose; the elastic hose is subjected to mold pressing shaping, so that the medium transmission hose can expand to achieve oil conveying when bearing positive pressure, the basic shape of the hose can be kept when bearing negative pressure, and therefore the medium transmission hose can be kept in a stable state in all working states; the signal transmission wire harness is fixed on the inner surface of the elastic hose, so that stable and reliable signal transmission is realized; the elastic hose is vulcanized, so that the strength and elasticity of the elastic hose are improved, the elastic hose and the signal transmission wire harness are prevented from being broken, and the service life of the medium transmission hose is prolonged.

Description

Technical Field

[0001] The invention belongs to the technical field of refueling pipeline manufacturing, and in particular relates to a manufacturing process of a medium transmission hose and the medium transmission hose. Background Art

[0002] The aircraft fuel filling location is far from the refueling control equipment. During the actual operation, the operators at the two locations need to communicate frequently to confirm the operation information, start and stop the operation timing, etc., which greatly limits the operation efficiency. At the same time, at the end of the refueling operation, the hose docking device is full of oil, and the hose is too heavy during the recovery process. There are problems such as a large number of operation support personnel and high labor intensity, which also seriously affects the operation efficiency. Therefore, in order to achieve efficient aircraft refueling support, there is an urgent need for a lightweight hose that can realize signal transmission to support the aircraft side support and lightweight recovery during the aircraft refueling process.

[0003] The lightweighting of hoses can be achieved from two perspectives: lightweighting of the hose body itself and removal of residual oil from the hose. Currently, the existing suckable flat rubber hoses basically meet the requirements for lightweighting of hoses. The ways to achieve signal transmission in hoses include pre-embedded signal lines in the hose wall and passing signal lines through the inner cavity of the hose. These two signal transmission methods have been applied in rubber hoses that cannot be sucked flat. However, considering the application in suckable flat rubber hoses, for the pre-embedded signal line method, since the wall of the suckable flat hose needs to be continuously compressed and expanded, and the strength of the signal line and the rubber hose is difficult to unify, it is very easy for the rubber to be damaged or the signal line to break, which seriously affects the service life of the hose; for the method of passing the signal line through the inner cavity of the hose, after the residual oil in the hose is sucked out, the part of the suckable flat hose that wraps the signal line will be significantly protruding, becoming a relatively weak point in the hose structure, which seriously affects the service life of the hose, and since the position of the signal line relative to the suckable flat hose is uncontrollable each time, it cannot be locally strengthened. Summary of the invention

[0004] The present invention provides a manufacturing process for a medium transmission hose, which can extend the service life of the hose and reduce the risk of a signal line breaking.

[0005] The present invention provides a manufacturing process for a medium transmission hose, which includes at least the following methods: manufacturing an elastic hose; molding 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 steps of making the elastic hose include processing and extruding to form a tubular lining layer; inserting a circular fixed core shaft into the interior of the lining layer, and the outer surface of the fixed core shaft is in contact with the inner surface of the lining layer; wrapping a reinforcing layer on the outer surface of the reinforcing layer; wrapping a protective layer on the outer surface of the reinforcing layer; and detaching the fixed core shaft from the interior of the lining layer.

[0007] In some optional embodiments, before the step of molding the elastic hose, the step further includes inserting a molding core shaft into the interior of the inner lining layer so that the inner lining layer, the reinforcing layer and the protective layer fit tightly from the inside to the outside.

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

[0009] In some optional embodiments, the step of fixing the signal transmission harness on the inner surface of the elastic hose includes bonding the signal transmission harness to the inner surface of the inner lining layer by means of a film.

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

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

[0012] In some optional embodiments, the reinforcement layer is a dense woven layer.

[0013] On the other hand, the present application also provides a medium transmission hose, which is realized by the manufacturing process of the medium transmission hose described in any of the above items, and the medium transmission hose includes: an elastic hose, including an inner lining layer, a reinforcement layer and a protective layer stacked in sequence by an inner and an outer layer; a signal transmission layer, extending along the length direction of the elastic hose, and arranged on the inner surface of the inner lining layer, the signal transmission layer, the signal transmission layer includes 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 symmetrical about the center line of the inner lining layer.

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

[0015] The beneficial effects brought by the present invention are as follows:

[0016] It can be seen from the above scheme that the present invention provides a manufacturing process for a medium transmission hose, which includes at least the following methods: manufacturing an elastic hose; molding the elastic hose so that the medium transmission hose can expand when subjected to positive pressure to achieve oil transportation, and can maintain the basic shape of the hose when subjected to negative pressure, so that the medium transmission hose can maintain a stable state under all working conditions; fixing the signal transmission harness on the inner surface of the elastic hose to achieve stable and reliable signal transmission; vulcanizing the elastic hose to improve the strength and elasticity of the elastic hose to avoid breakage of the elastic hose and the signal transmission harness, thereby increasing the service life of the medium transmission hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure 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 of a provided embodiment.

[0021] In the figure, 1-elastic hose; 11-inner lining layer; 12-reinforcement layer; 13-protection layer; 2-signal transmission layer; 21-first signal transmission harness; 22-second signal transmission harness; 23-film. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] The aircraft fuel filling location is far from the refueling control equipment. During the actual operation, the operators at the two locations need to communicate frequently to confirm the operation information, start and stop the operation timing, etc., which greatly limits the operation efficiency. At the same time, at the end of the refueling operation, the hose docking device is full of oil, and the hose is too heavy during the recovery process. There are problems such as a large number of operation support personnel and high labor intensity, which also seriously affects the operation efficiency. Therefore, in order to achieve efficient aircraft refueling support, there is an urgent need for a lightweight hose that can realize signal transmission to support the aircraft side support and lightweight recovery during the aircraft refueling process.

[0024] The lightweighting of hoses can be achieved from two perspectives: lightweighting of the hose body itself and removal of residual oil from the hose. Currently, the existing suckable flat rubber hoses basically meet the requirements for lightweighting of hoses. The ways to achieve signal transmission in hoses include pre-embedded signal lines in the hose wall and passing signal lines through the inner cavity of the hose. These two signal transmission methods have been applied in rubber hoses that cannot be sucked flat. However, considering the application in suckable flat rubber hoses, for the pre-embedded signal line method, since the wall of the suckable flat hose needs to be continuously compressed and expanded, and the strength of the signal line and the rubber hose is difficult to unify, it is very easy for the rubber to be damaged or the signal line to break, which seriously affects the service life of the hose; for the method of passing the signal line through the inner cavity of the hose, after the residual oil in the hose is sucked out, the part of the suckable flat hose that wraps the signal line will be significantly protruding, becoming a relatively weak point in the hose structure, which seriously affects the service life of the hose, and since the position of the signal line relative to the suckable flat hose is uncontrollable each time, it cannot be locally strengthened.

[0025] The embodiment of the present invention provides a manufacturing process of a medium transmission hose, which can extend the service life of the hose and reduce the risk of breakage of a signal line.

[0026] The following is combined with the accompanying drawings of the specification Figure 1 to Figure 4 The manufacturing process of the medium transmission hose is described in detail.

[0027] Figure 1 This is a structural diagram of the initial state of the medium transmission hose. At this time, the medium transmission hose is not under pressure. The overall shape of the medium transmission hose is dumbbell-shaped. The dumbbell parts of the tube wall at both ends are combined with the signal transmission layer 2 to form a dumbbell-shaped tube wall. The middle part of the tube wall is circular, and the rest of the tube wall is in a free bending state. The dumbbell parts of the tube wall on both sides fix the signal transmission layer 2 on the tube wall of the rubber hose inner lining layer 11 through rubber vulcanization. The rubber that fixes 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 inside the medium transmission hose. Figure 2 It is a structural diagram of the hose in an expanded state. At this time, the medium transmission hose is in an oil transportation condition and is subjected to positive pressure. The overall shape of the medium transmission hose is quasi-circular. Except for the dumbbell-like part and the free bending part of the tube wall that wrap the signal transmission layer 2, the signal transmission layer 2 embedded in the middle part of the tube wall will also move with the tube wall.

[0028] Figure 3 It is a structural schematic diagram of the medium transmission hose in the sucked and flattened state. At this time, the medium transmission hose is in the residual oil condition in the recovery pipe and is subjected to negative pressure. The overall shape of the hose is dumbbell-shaped. The dumbbell parts at both ends are dumbbell-shaped in combination with the core wire. The free bending part is sucked and flattened to a state where it is almost in contact with the inner wall of the hose, and the middle part still maintains a quasi-circular state.

[0029] The present application provides a manufacturing process for a medium transmission hose, and the manufacturing process for the medium transmission hose includes at least the following methods: manufacturing an elastic hose 1; molding the elastic hose 1; fixing a signal transmission layer 2 on the inner surface of the elastic hose 1; and vulcanizing the elastic hose 1.

[0030] Specifically, the present invention provides a manufacturing process for a medium transmission hose including at least the following methods: manufacturing an elastic hose 1; molding the elastic hose 1 so that the medium transmission hose can expand when subjected to positive pressure to achieve oil transportation, and can maintain the basic shape of the hose when subjected to negative pressure, so that the medium transmission hose can maintain a stable state under all working conditions; fixing a signal transmission layer 2 on the inner surface of the elastic hose 1 to achieve stable and reliable signal transmission; vulcanizing the elastic hose 1 so that the inner and outer surfaces of the elastic hose 1 have a vulcanized layer to improve the strength and elasticity of the elastic hose 1 and avoid breakage of the elastic hose 1 and the signal transmission layer 2, thereby increasing the service life of the medium transmission hose.

[0031] Furthermore, the medium transmission hose is in a dumbbell shape after molding. The dumbbell-shaped hose structure can expand when subjected to positive pressure to achieve oil transportation, and can maintain the basic shape of the hose when subjected to negative pressure without obvious bending angles, thereby adapting to the operating conditions of repeatedly recovering excess oil.

[0032] In some optional embodiments, the steps of making the elastic hose 1 include: processing and extruding to form a tubular lining layer 11; inserting a circular fixed core shaft into the interior of the lining layer 11, and the outer surface of the fixed core shaft is in contact with the inner surface of the lining layer 11; wrapping the reinforcing layer 12 on the outer surface of the reinforcing layer 12; wrapping the protective layer 13 on the outer surface of the reinforcing layer 12; and detaching the fixed core shaft from the interior of the lining layer 11.

[0033] Specifically, a circular fixed mandrel is inserted into the inner lining layer 11, and the outer surface of the fixed mandrel is in contact with the inner surface of the inner lining layer 11, and the fixed mandrel is used to support the inner lining layer 11. The reinforcing layer 12 is wrapped around the outer surface of the inner lining layer 11 to ensure that when subjected to negative pressure, the hose portion of the signal transmission layer 2 disposed on the inner surface of the inner lining layer 11 can still maintain its structural form, and prevent the core wire from bending and breaking due to the negative pressure on the hose. The molding makes the medium transmission hose have the shape of the insert molding mandrel, so that the medium transmission hose can expand to achieve oil transportation when subjected to positive pressure, and can maintain the basic shape of the hose when subjected to negative pressure, so that the medium transmission hose can maintain a stable structure in all working conditions.

[0034] Furthermore, the materials of the inner lining layer 11 and the reinforcing layer 12 are both rubber materials, and the elastic hose 1 is vulcanized. The vulcanized elastic hose 1 has the following advantages: improved strength and elasticity. The vulcanization treatment can transform the molecular structure of the rubber from a linear structure to a three-dimensional network structure. This structure enhances the interaction between the molecular chains, thereby significantly improving the strength and elasticity of the rubber. When subjected to external forces, the vulcanized rubber can better resist deformation and fracture. Improve wear resistance and swelling resistance. The cross-linked bonds formed during the vulcanization process limit the movement of rubber molecules, reduce the wear and swelling of the rubber under friction and solvent action, and enable the vulcanized rubber to maintain good performance stability during long-term use. Improve heat resistance and chemical stability. The formation of cross-linked bonds limits the thermal motion of the rubber molecular chain and improves the heat resistance of the rubber. At the same time, the cross-linking reaction reduces the chemically active groups or atoms, making it difficult to carry out the aging reaction and improving the chemical stability of the rubber.

[0035] In some optional embodiments, before the step of molding the elastic hose 1 , a molding core shaft is inserted into the inner lining layer 11 so that the inner lining layer 11 , the reinforcing layer 12 and the protective layer 13 fit tightly from the inside to the outside.

[0036] Specifically, the fixed core shaft is separated from the inner lining layer 11, the shaping core shaft is inserted into the inner lining layer 11, and the protective layer 13 is wrapped on the outer surface of the reinforcement layer 12. The protective layer 13 makes the entire medium transmission hose resistant to wear, outdoor exposure and petroleum-based fuel.

[0037] In some optional embodiments, at least a first signal transmission harness 21 and a second signal transmission harness 22 are laid on the inner surface of the inner lining layer 11 , and the first signal transmission harness 21 and the second signal transmission harness 22 are symmetrical about the center line of the inner lining layer 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 first signal transmission harness 21 and the second signal transmission harness 22 to the inner surface of the inner lining layer 11 through a film 23 .

[0039] Specifically, the material of the film 23 is rubber. The inner lining layer 11 and the protective layer 13 are rubber layers. The material of the film 23 is rubber. When the elastic hose 1 undergoes a vulcanization reaction, the film 23 is also vulcanized to improve its strength and elasticity. The vulcanization treatment can transform the molecular structure of the rubber from a linear structure to a three-dimensional network structure. This structure enhances the interaction between the molecular chains, thereby significantly improving the strength and elasticity of the rubber. When the elastic hose 1 is in a bent, expanded or flattened state, it can prevent the first signal transmission harness 21 and the second signal transmission harness 22 from being broken due to the change in length of the hose in the working state. When oil is transported outward through the medium transmission hose, the medium transmission hose is subjected to positive pressure, the free bending part of the medium transmission hose is stretched open, and the entire medium transmission hose expands into a quasi-circular shape. The expansion state of the hose is as follows Figure 2 As shown in the figure, when the residual oil in the medium transmission hose is sucked out, the medium transmission hose is subjected to negative pressure, the free bending part of the hose is flattened, and the hose is basically dumbbell-shaped, as shown in the figure. Figure 3 shown.

[0040] In some optional embodiments, the reinforcement layer 12 is a densely woven layer.

[0041] Specifically, the reinforcement layer 12 is a densely woven layer to ensure that when subjected to negative pressure, the hose portion with the embedded core wire can still maintain its structural shape, thereby preventing the signal transmission layer 2 from bending and breaking due to the hose being subjected to negative pressure.

[0042] On the other hand, the present application also provides a medium transmission hose, which is realized by the manufacturing process of the medium transmission hose mentioned in any of the above items, and the medium transmission hose includes: an elastic hose 1, including an inner lining layer 11, a reinforcement layer 12 and a protective layer 13 stacked in sequence from inside to outside; a signal transmission layer 2, extending along the length direction of the elastic hose 1, arranged on the inner surface of the inner lining layer 11, the signal transmission layer 2, the signal transmission layer 2 includes a first signal transmission wire harness 21 and a second signal transmission wire harness 22, and the first signal transmission wire harness 21 and the second signal transmission wire harness 22 are symmetrical about the center line of the inner lining layer 11.

[0043] Specifically, the outer surface of the inner lining layer 11 is wrapped with a reinforcing layer 12 to ensure that the hose part with the embedded core wire can still maintain its structural form when subjected to negative pressure, so as to prevent the signal transmission layer from bending and breaking due to the hose being subjected to negative pressure. The inner surface of the inner lining layer 11 is provided with a first signal transmission harness 21 and a second signal transmission harness 22 to achieve stable and reliable signal transmission. The outer surface of the reinforcing layer 12 includes a 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 molded and formed medium transmission hose has the shape of an insert molding mandrel, so that the medium transmission hose can expand to achieve oil transportation when subjected to positive pressure, and can maintain the basic shape of the hose when subjected to negative pressure, so that the medium transmission hose can maintain a stable structure in each working state, and can also achieve stable and reliable signal transmission.

[0044] Furthermore, the inner lining layer 11, the reinforcement layer 12 and the protective layer 13 of the medium transport hose are characterized in that the inner lining layer 11 is rubber, the reinforcement layer 12 is a densely woven layer, and the protective layer 13 is a conductive synthetic rubber outer covering layer. The interlayer bonding strength between the layers is enhanced, which can prevent peeling between different layers of the medium transport hose after the hose repeatedly undergoes oil transport and oil recovery circulation operations, thereby increasing the service life of the hose.

[0045] In some optional embodiments, the reinforcement layers 12 are all densely woven layers.

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

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

[0048] Furthermore, the inner lining layer 11 and the protective layer 13 are rubber layers, so that the medium transmission hose can expand when subjected to positive pressure to achieve oil transportation, and can maintain the basic shape of the hose when subjected to negative pressure, so that the medium transmission hose can remain stable in all working conditions; the first signal transmission harness 21 and the second signal transmission harness 22 are fixed on the inner surface of the elastic hose 1 to achieve stable and reliable signal transmission; the elastic hose 1 is vulcanized to improve the strength and elasticity of the elastic hose 1 to avoid breakage of the elastic hose 1, the first signal transmission harness 21 and the second signal transmission harness 22, thereby increasing the service life of the medium transmission hose.

[0049] In some optional embodiments, the first signal transmission harness 21 and the second signal transmission harness 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. The inner lining layer 11 and the protective layer 13 are rubber layers. The material of the rubber sheet 23 is rubber. When the elastic hose 1 undergoes a vulcanization reaction, the rubber sheet 23 is also vulcanized to improve strength and elasticity.

[0051] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A process for manufacturing a medium transmission hose, characterized in that: At least the following methods are included: Making elastic hose; Performing molding on the elastic hose; Laying a signal transmission layer on the inner surface of the elastic hose; The elastic hose is vulcanized.

2. The manufacturing process of the medium transmission hose according to claim 1, characterized in that: The steps of making the elastic hose include: Processing and extruding to form a tubular lining layer; A circular fixed mandrel is inserted into the inner lining layer, and the outer surface of the fixed mandrel is in contact with the inner surface of the inner lining layer; Wrapping a reinforcement layer on the outer surface of the inner lining layer; Wrapping a protective layer on the outer surface of the reinforcement layer; The fixed mandrel is disengaged from the interior of the liner.

3. The manufacturing process of the medium transmission hose according to claim 2, characterized in that: Before the step of molding the elastic hose, the method further includes inserting a molding core shaft into the inner lining layer so that the inner lining layer, the reinforcing layer and the protective layer fit closely from the inside to the outside.

4. The manufacturing process of the medium transmission hose according to claim 3 is characterized in that: At least a first signal transmission wire bundle and a second signal transmission wire bundle are laid on the inner surface of the inner lining layer, and the first signal transmission wire bundle and the second signal transmission wire bundle are symmetrical about the center line of the inner lining layer.

5. The manufacturing process of the medium transmission hose according to claim 4, characterized in that: The step of fixing the signal transmission harness on the inner surface of the elastic hose includes bonding the signal transmission harness to the inner surface of the inner lining layer through a film.

6. The manufacturing process of the medium transmission hose according to claim 5, characterized in that: The film is made of rubber.

7. The manufacturing process of the medium transmission hose according to claim 2, characterized in that: The inner lining layer and the protective layer are rubber layers.

8. The manufacturing process of the medium transmission hose according to claim 7, characterized in that: The reinforcement layer is a densely woven layer.

9. A medium transmission hose, characterized in that: The method is realized by the manufacturing process of the medium transmission hose according to any one of claims 1 to 8, wherein the medium transmission hose comprises: An elastic hose (1) comprises an inner lining layer (11), a reinforcing layer (12) and a protective layer (13) which are sequentially stacked from inner to outer layers; A signal transmission layer (2) extends along the length direction of the elastic hose (1) and is arranged on the inner surface of the inner lining layer (11); the signal transmission layer (2) comprises 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) are symmetrical about the center line of the inner lining layer (11).

10. The medium transport hose according to claim 9, characterized in that: The first signal transmission harness (21) and the second signal transmission harness (22) are bonded together by a rubber sheet (23).

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