Rubber hose for aircraft ground refueling and unloading

Abstract

The utility model discloses a rubber hose for aircraft ground refueling and oil unloading, which comprises an inner surface rubber layer, the outer wall of the inner surface rubber layer is sequentially provided with a framework layer, a reinforcing layer and a temperature conducting layer from inside to outside, the framework layer is internally provided with a bent pressure-bearing framework, the temperature conducting layer comprises filling rubber and a temperature conducting pipeline, and the filling rubber is arranged in the temperature conducting pipeline. And the water inlet end and the water outlet end of the temperature conducting pipeline penetrate out of the filling rubber and are connected to a circulating liquid system. The novel pressure-bearing pipeline has the beneficial effects that the stability of the pipeline in a high-pressure environment is improved through the pressure-bearing framework, structural damage caused by pressure fluctuation is reduced, the safety in the oil filling and discharging process is improved, and the service life is prolonged; the temperature liquid circulates in the temperature guide pipeline through the circulating liquid system, the temperature in the fuel oil pipeline can be effectively balanced, the temperature control mechanism guarantees stable conveying of oil products, and continuity and stability in the oil filling and discharging process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of pipelines, and particularly relates to a rubber hose for aircraft ground refueling and oil unloading. Background Technique

[0002] Due to the extreme temperature and environmental conditions faced by aircraft fuel ground operations, the technology of rubber hoses has been continuously advancing. In the early stage, rubber hoses mainly relied on natural rubber and had limited high and low temperature resistance. With the development of technology, synthetic rubbers such as fluororubber and silicone rubber have been introduced, and these materials perform excellently in high temperature, low temperature, and chemical erosion. Modern hose designs also include wear-resistant sheaths, antistatic layers, and high-pressure resistant layers to improve safety and durability. In addition, the demand for lightweight and flexibility has promoted the optimization of the hose structure, making it more convenient in operation. The overall development aims to improve the durability, reliability, and operation safety of the hose.

[0003] During the process of refueling and oil unloading of an aircraft, the fuel usually has a large impact force. If the hose performance of the aircraft ground refueling and oil unloading system is insufficient, serious consequences may occur. Moreover, when affected by temperature, the fuel is particularly prone to changes in viscosity and fluidity, and the existing oil pipelines do not regulate the temperature, thus affecting the transportation of the fuel. Summary of the Invention

[0004] The purpose of the utility model is to provide a rubber hose for aircraft ground refueling and oil unloading to solve the above problems, as described in detail below.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A rubber hose for aircraft ground refueling and oil unloading provided by the utility model includes an inner rubber layer, and a skeleton layer, a strengthening layer, and a temperature guiding layer are sequentially arranged on the outer wall of the inner rubber layer from inside to outside. Among them, a bending pressure-bearing skeleton is arranged inside the skeleton layer, and the bending pressure-bearing skeleton is distributed in a circular pattern inside the skeleton layer;

[0007] The temperature guiding layer includes filled rubber and temperature guiding pipes. The temperature guiding pipes are formed and processed inside the filled rubber, and the water inlet end and water outlet end of the temperature guiding pipes penetrate through the filled rubber and are connected to a circulating liquid system.

[0008] Furthermore, a hair adhesion layer is arranged between the inner rubber layer and the skeleton layer. The outer wall of the hair adhesion layer is provided with anti-slip lines, and the hair adhesion layer is bonded and formed with the skeleton layer.

[0009] Furthermore, the number of the pressure-bearing skeletons is multiple, and they are evenly distributed along the length direction of the skeleton layer. The pressure-bearing skeleton includes two wavy annular metal strips, and the two annular metal strips are intertwined.

[0010] Furthermore, a polyurethane coating is provided on the outer wall of the skeleton layer, and the polyurethane coating extends along the length direction of the skeleton layer.

[0011] Furthermore, the reinforcing layer is bonded to the outside of the polyurethane coating through a wound braided layer.

[0012] Furthermore, a steel wire belt extending along the length of the braided layer is provided on the braided layer.

[0013] Furthermore, a sheath layer is provided outside the heat conduction layer, and the water inlet end and the water outlet end of the heat conduction pipe penetrate through the sheath layer.

[0014] Furthermore, the heat conduction pipe is distributed in a serpentine shape inside the filled rubber.

[0015] The beneficial effects are as follows:

[0016] An inner rubber layer, a skeleton layer, a reinforcing layer and a heat conduction layer are provided inside the device. This multi-layer structure can effectively improve the wear resistance and compressive resistance of the pipeline. The stability of the pipeline under high pressure is improved through the pressure-bearing skeleton, the structural damage caused by pressure fluctuations is reduced, the safety of the refueling and oil unloading processes is improved, and the service life is extended;

[0017] By means of the circulating liquid system, the temperature liquid circulates in the heat conduction pipe, which can effectively balance the temperature inside the fuel pipeline, realize effective temperature management, avoid the change of liquid viscosity and pressure fluctuations caused by temperature changes. This temperature control mechanism ensures the stable transportation of oil products and the continuity and stability of the refueling and oil unloading processes. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 is a structural schematic diagram of the present invention;

[0020] Figure 2 is a right-view distribution diagram of the heat conduction pipe in the present invention;

[0021] Figure 3 is a structural schematic diagram of the pressure-bearing skeleton of the present invention.

[0022] The description of the reference numerals is as follows:

[0023] 1. Inner rubber layer; 2. Wool adhesive layer; 3. Skeleton layer; 301. Pressure-bearing skeleton; 302. Polyurethane coating; 4. Reinforcement layer; 401. Braided layer; 402. Steel wire belt; 5. Heat-conducting layer; 501. Heat-conducting pipeline; 502. Filling rubber; 6. Sheath layer. Specific embodiments

[0024] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions of the present utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other implementation manners obtained by those of ordinary skill in the art without creative efforts shall fall within the scope protected by the present utility model.

[0025] First embodiment:

[0026] See Figures 1 - 3 As shown, the present utility model provides a rubber hose for aircraft ground refueling and oil unloading, which includes an inner rubber layer 1. The inner rubber layer 1 serves as the core protective layer, and a skeleton layer 3, a reinforcement layer 4, and a heat-conducting layer 5 are sequentially provided outside it to form a multi-layer structure to improve the overall strength of the pipeline. Among them, a bent pressure-bearing skeleton 301 is provided inside the skeleton layer 3. The bent pressure-bearing skeleton 301 is circumferentially distributed inside the skeleton layer 3. The bent pressure-bearing skeleton 301 in the skeleton layer 3 is circumferentially distributed, enhancing the structural stability and durability of the pipeline under high-pressure conditions. When the pipeline bears a large pressure, the bent pressure-bearing skeleton 301 is used to form a support for the skeleton layer 3 and the inner rubber layer 1, effectively preventing pipeline deformation or rupture caused by pressure changes.

[0027] Furthermore, the heat-conducting layer 5 includes filling rubber 502 and a heat-conducting pipeline 501. The heat-conducting pipeline 501 is formed and processed inside the filling rubber 502, and the water inlet end and the water outlet end of the heat-conducting pipeline 501 penetrate through the filling rubber 502 and are connected to a circulating liquid system;

[0028] The combination of the filling rubber 502 and the heat-conducting pipeline 501 in the heat-conducting layer 5 uses the circulating liquid system to introduce corresponding coolant or heating liquid into the heat-conducting pipeline 501, thereby assisting in heating or cooling the fuel inside the inner rubber layer 1, ensuring the fuel delivery effect, and avoiding changes in the properties of the refueling liquid caused by temperature fluctuations of the fuel inside the inner rubber layer 1, which is crucial for ensuring the stability of refueling.

[0029] The circulating liquid system includes a pump body and a water tank. The water inlet end of the temperature-conducting pipe 501, the water tank, the pump body, and the water outlet end of the temperature-conducting pipe 501 are connected in a loop through pipes. The close cooperation between the temperature-conducting pipe 501 and the circulating liquid system can continuously adjust the temperature through the loop formed by the pump body and the water tank. This structure can not only control the operation temperature of the temperature-conducting pipe 501 with high precision but also enhance the performance stability of the pipe during long-term use, reducing potential risks caused by uneven temperature.

[0030] Furthermore, a hair-bonding layer 2 is provided between the inner rubber layer 1 and the skeleton layer 3. The outer wall of the hair-bonding layer 2 is provided with anti-slip lines, that is, the outer wall of the hair-bonding layer 2 is subjected to hair-drawing treatment. The hair-bonding layer 2 and the skeleton layer 3 are bonded and formed, which can improve the tightness of the connection between the inner rubber layer 1 and the skeleton layer 3.

[0031] The second embodiment is different from the first embodiment in the following features:

[0032] There are multiple pressure-bearing skeletons 301, which are evenly distributed along the length direction of the skeleton layer 3. The pressure-bearing skeleton 301 includes two wavy ring-shaped metal strips, and the two ring-shaped metal strips are intertwined.

[0033] The outer wall of the skeleton layer 3 is provided with a polyurethane coating 302, and the polyurethane coating 302 extends along the length direction of the skeleton layer 3. Extremely stable structural support is provided by multiple pressure-bearing skeletons 301, which are formed by intertwining two wavy ring-shaped metal strips. This design not only enhances the pressure-bearing capacity of the pipe but also improves the durability and stability of the pipe in a high-pressure environment. By utilizing the deformation of the wavy ring-shaped metal strips, the pipe pressure can be easily handled, and the pressure for transporting fuel through the pipe can be increased. The outer wall of the skeleton layer 3 is coated with a polyurethane coating 302. This coating not only provides additional wear-resistant protection but also has a certain toughness. The extension and coverage of the polyurethane coating 302 improve the toughness of the pipe in the length direction.

[0034] The reinforcing layer 4 is bonded to the outside of the polyurethane coating 302 by a wound braided layer 401. By bonding the reinforcing layer 4 to the outside of the polyurethane coating 302, the structural strength and stability of the pipe are enhanced. The braided layer 401 provides additional mechanical support, enabling the pipe to effectively withstand greater external pressure and friction. A steel wire belt 402 extending along the length of the braided layer 401 is provided on the braided layer 401. The steel wire belt 402 further enhances the tensile strength of the braided layer, ensuring the reliability of the entire system in a high-pressure and complex environment, and also improving its impact resistance and fatigue resistance, thereby extending the service life of the pipe.

[0035] The third embodiment is different from the first embodiment in the following features:

[0036] A sheath layer 6 is provided outside the heat conduction layer 5. The water inlet end and the water outlet end of the heat conduction pipeline 501 penetrate through the sheath layer 6, and the sheath layer 6 effectively protects the heat conduction layer 5.

[0037] The heat conduction pipeline 501 is serpentinely distributed inside the filling rubber 502. The flow of the temperature liquid in the heat conduction pipeline 501 helps to optimize the heat transfer efficiency, and at the same time avoids excessive stress and damage to the heat conduction pipeline. Moreover, the serpentine distribution of the heat conduction pipeline 501 inside the filling rubber 502 does not affect the bending of the entire fuel pipeline, and can effectively transfer heat, improving the fuel delivery effect.

[0038] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claimed rights.

Claims

1. A rubber hose for aircraft ground refueling and defueling, comprising an inner rubber layer (1), characterized in that: The outer wall of the inner rubber layer (1) is successively provided with a skeleton layer (3), a strengthening layer (4), and a heat conduction layer (5) from inside to outside; Wherein, a pressure-bearing skeleton (301) arranged in a bent shape is provided inside the skeleton layer (3), and the bent pressure-bearing skeleton (301) is distributed in a circular pattern inside the skeleton layer (3); The heat conduction layer (5) includes a filled rubber (502) and a heat conduction pipe (501), the heat conduction pipe (501) is formed inside the filled rubber (502), and the water inlet end and the water outlet end of the heat conduction pipe (501) penetrate through the filled rubber (502) and are connected to a circulating liquid system.

2. The rubber hose for aircraft ground refueling and defueling according to claim 1, characterized in that: A hair adhesion layer (2) is provided between the inner rubber layer (1) and the skeleton layer (3), the outer wall of the hair adhesion layer (2) is provided with anti-slip lines, and the hair adhesion layer (2) is adhesively formed with the skeleton layer (3).

3. A rubber hose for aircraft ground refueling and defueling according to claim 1, characterized in that: The number of the pressure-bearing skeletons (301) is multiple, and they are evenly distributed along the length direction of the skeleton layer (3), and the pressure-bearing skeleton (301) includes two wave-shaped annular metal strips, and the two annular metal strips are intertwined.

4. A rubber hose for aircraft ground refueling and defueling according to claim 3, characterized in that: A polyurethane coating (302) is provided on the outer wall of the skeleton layer (3), and the polyurethane coating (302) extends along the length direction of the skeleton layer (3).

5. The rubber hose for aircraft ground refueling and defueling according to claim 4, characterized in that: The strengthening layer (4) is adhesively bonded to the outside of the polyurethane coating (302) through a wound braided layer (401).

6. A rubber hose for aircraft ground refueling and defueling according to claim 5, characterized in that: A steel wire belt (402) extending along the length of the braided layer (401) is provided on the braided layer (401).

7. A rubber hose for aircraft ground refueling and defueling according to claim 1, characterized in that: A sheath layer (6) is provided on the outside of the heat conduction layer (5), and the water inlet end and the water outlet end of the heat conduction pipe (501) penetrate through the sheath layer (6).

8. A rubber hose for aircraft ground refueling and defueling according to claim 1 or 7, characterized in that: The heat conduction pipe (501) is distributed in a serpentine shape inside the filled rubber (502).

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