Rubber hose for refueling and oil discharging of airplane
Enhanced thermal insulation and fire resistance in aircraft refueling hoses are achieved through a multi-layered design with insulating and fire-resistant materials, addressing the issue of low-temperature damage and extending hose lifespan.
Patent Information
- Application Number
- CN202422466633.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-10-12
AI Technical Summary
The rubber hose used for refueling and discharging of existing aircraft has poor temperature insulation performance under low temperature environments, is prone to rupture and damage, and has a short service life.
The temperature insulation flame retardant layer is installed on the outside of the rubber hose, including an inner insulation layer, a flame retardant layer and an outer insulation layer. The inner insulation layer adopts a rubber-plastic sponge sleeve, the flame retardant layer is composed of polyvinyl chloride flame retardant particles, the outer insulation layer is a Teflon rubber layer, the reinforcement layer is made of aramid fiber wire, and the inner rubber layer is an electrostatic fluororesin layer.
Improves the temperature insulation and flame retardant performance of rubber hoses, avoids cracking and damage at low temperatures, and extends service life.
Smart Images
Figure CN223105530U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of aircraft refueling and oil drainage auxiliary tools, in particular to a rubber hose for aircraft refueling and oil drainage. Background Art
[0002] When refueling an aircraft on the ground, a rubber hose for refueling and draining the aircraft is often used to ensure the normal delivery of fuel to the aircraft's fuel tank.
[0003] At present, the rubber hose for aircraft refueling and oil drainage is mainly composed of an outer protective layer, a reinforcement layer installed in the outer protective layer, an inner rubber layer installed in the reinforcement layer, and a steel wire support layer installed between the inner rubber layer and the reinforcement layer. Although the rubber hose of this structure can realize the normal transportation of fuel into the aircraft fuel tank, the rubber hose of this structure for aircraft refueling and oil drainage has poor thermal insulation performance, resulting in the rubber hose for aircraft refueling and oil drainage being easily affected by the external ambient temperature when used in low temperature conditions, causing the rubber hose to rupture and damage, resulting in a short service life of the rubber hose. Summary of the invention
[0004] 1. Technical issues to be resolved
[0005] The technical problem to be solved by the utility model is to provide a rubber hose for aircraft refueling and oil discharge, which has good thermal insulation and flame retardancy and can effectively avoid rupture and damage when used in a low temperature environment, in view of the current status of the prior art.
[0006] (II) Technical solution
[0007] The utility model is achieved through the following technical scheme: the utility model proposes a rubber hose for aircraft refueling and oil drainage, comprising an outer protective layer, a thermal insulation and flame retardant layer is installed on the outer side of the outer protective layer, the thermal insulation and flame retardant layer comprises an inner thermal insulation layer directly in contact with the outer protective layer, a flame retardant layer installed on the outer side of the inner thermal insulation layer, and an outer thermal insulation layer installed on the outer side of the flame retardant layer.
[0008] Furthermore, the inner thermal insulation layer is bonded to the outer protective layer, and the inner thermal insulation layer is a rubber-plastic sponge sleeve.
[0009] By adopting the above technical solution, due to the low thermal conductivity of the rubber-plastic sponge insulation material, the fine independent bubble structure, no air convection, and a completely closed-cell structure, the insulation effect is long-lasting and good, and the material is completely isolated from water vapor. In an environment above 89 degrees Celsius and below minus 60 degrees Celsius, there will be no material changes, which is suitable for cold preservation purposes in various refrigeration engineering projects. Therefore, the inner insulation layer composed of rubber-plastic sponge has good thermal insulation performance.
[0010] Furthermore, the flame retardant layer is composed of polyvinyl chloride flame retardant particles, and the flame retardant layer is bonded to the inner thermal insulation layer.
[0011] By adopting the above technical solution, the flame retardant performance of the rubber hose can be further improved under the action of the flame retardant layer.
[0012] Furthermore, the external thermal insulation layer is a Teflon rubber layer, and the external protective layer is bonded to the flame retardant layer.
[0013] By adopting the above technical solution, the Teflon rubber layer has the characteristics of acid and alkali resistance and high temperature resistance, so it can effectively avoid the influence of the external temperature on the external protective layer.
[0014] Furthermore, a reinforcing layer is installed inside the external protective layer, a steel wire support layer is installed inside the reinforcing layer, and an inner rubber layer is installed inside the steel wire support layer.
[0015] By adopting the above technical solution, the reinforcing layer, the steel wire support layer and the inner rubber layer together constitute the main structure inside the rubber hose for aircraft refueling and fuel drainage, ensuring that the rubber hose for aircraft refueling and fuel drainage can normally transport fuel during use.
[0016] Furthermore, the reinforcing layer is woven from aramid fiber filaments, and the steel wire support layer is in a spiral structure.
[0017] By adopting the above technical solution, the reinforcing layer can effectively increase the crack resistance of the rubber hose.
[0018] Furthermore, the inner rubber layer is an antistatic fluororesin layer.
[0019] By adopting the above technical solution, it is ensured that no substances will be precipitated from the inner rubber layer to contaminate the fuel during use.
[0020] (III) Beneficial effects
[0021] The utility model has the following beneficial effects compared with the prior art:
[0022] To solve the problem that the rubber hose for aircraft refueling and drainage mainly consists of an outer protective layer, a reinforcing layer installed inside the outer protective layer, an inner rubber layer installed inside the reinforcing layer after installation, and a steel wire support layer installed between the inner rubber layer and the reinforcing layer. Although the rubber hose with this structure can achieve the normal transportation of fuel into the aircraft fuel tank, the heat insulation performance of the rubber hose for aircraft refueling and drainage with this structure is poor. When the rubber hose for aircraft refueling and drainage is used in low-temperature conditions, it is easily affected by the external environmental temperature, resulting in the rupture and damage of the rubber hose, and the service life of the rubber hose is short. The utility model installs a heat insulation and flame retardant layer composed of an outer heat insulation layer, an inner heat insulation layer, and a flame retardant layer on the outside of the outer protective layer, so that the rubber hose for aircraft refueling and drainage has good heat insulation and flame retardant performance during use, effectively avoiding the rupture and damage of the rubber hose for aircraft refueling and drainage when used in a low-temperature state, and extending the service life of the rubber hose for aircraft refueling and drainage. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 FIG. is a schematic structural diagram of a rubber hose for aircraft refueling and drainage according to the present utility model;
[0024] Figure 2 is a rubber hose for aircraft refueling and drainage according to the present utility model Figure 1 an enlarged view of part A.
[0025] The reference numerals are explained as follows:
[0026] 1. Outer protective layer; 2. Heat insulation and flame retardant layer; 201. Outer heat insulation layer; 202. Flame retardant layer; 203. Inner heat insulation layer; 3. Reinforcing layer; 4. Inner rubber layer; 5. Steel wire support layer. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0028] As Figure 1 - Figure 2As shown, a rubber hose for aircraft refueling and oil drainage in this embodiment includes an outer protective layer 1, a thermal insulation and flame retardant layer 2 is installed on the outside of the outer protective layer 1, the thermal insulation and flame retardant layer 2 includes an inner thermal insulation layer 203 directly in contact with the outer protective layer 1, a flame retardant layer 202 installed on the outside of the inner thermal insulation layer 203, and an outer thermal insulation layer 201 installed on the outside of the flame retardant layer 202, the inner thermal insulation layer 203 is bonded to the outer protective layer 1, the inner thermal insulation layer 203 is a rubber-plastic sponge sleeve, because the rubber-plastic sponge thermal insulation material has a low thermal conductivity, a fine independent bubble structure, no air convection, a completely closed-cell structure, a long-lasting and good thermal insulation effect, and the material is completely isolated from water vapor. There will be no material changes in the environment above 89 degrees Celsius and below minus 60 degrees Celsius, which is suitable for cold preservation purposes in various refrigeration engineering projects. Therefore, the inner insulation layer 203 composed of rubber and plastic sponge has good thermal insulation performance, and the outer insulation layer 201 is a Teflon rubber layer. The outer protective layer 1 is bonded to the flame retardant layer 202. The Teflon rubber layer is acid and alkali resistant and high temperature resistant, so it can effectively avoid the influence of external temperature on the outer protective layer 1.
[0029] like Figure 1 - Figure 2 As shown, in this embodiment, the flame retardant layer 202 is composed of polyvinyl chloride flame retardant particles, and the flame retardant layer 202 is bonded to the inner insulation layer 203. The flame retardant layer 202 can further improve the flame retardant performance of the rubber hose.
[0030] like Figure 1 - Figure 2 As shown, in this embodiment, a reinforcing layer 3 is installed on the inner side of the outer protective layer 1, a steel wire supporting layer 5 is installed on the inner side of the reinforcing layer 3, an inner rubber layer 4 is installed on the inner side of the steel wire supporting layer 5, the reinforcing layer 3, the steel wire supporting layer 5 and the inner rubber layer 4 together constitute the main structure inside the rubber hose for refueling and draining the aircraft, ensuring that the rubber hose for refueling and draining the aircraft can normally transport the fuel when in use, the reinforcing layer 3 is woven from aramid fiber filaments, the steel wire supporting layer 5 is a spiral structure, the reinforcing layer 3 can effectively increase the anti-cracking performance of the rubber hose, and the inner rubber layer 4 is an electrostatic conductive fluororesin layer, ensuring that the inner rubber layer 4 will not precipitate substances to pollute the fuel when in use.
[0031] The specific implementation process of this embodiment is as follows: when in use, first install the rubber hose for refueling and draining oil on the corresponding use position, then just connect the liquid outlet of the rubber hose for refueling and draining oil to the aircraft fuel tank, and then the rubber hose can be put into use. During use, the thermal insulation and flame retardant layer 2 composed of the outer thermal insulation layer 201, the inner thermal insulation layer 203 and the flame retardant layer 202 are installed on the outer side of the outer protective layer 1, so that the rubber hose for refueling and draining oil has good thermal insulation and flame retardant properties when in use, effectively avoiding the rupture and damage of the rubber hose for refueling and draining oil when used in low temperature conditions, and extending the service life of the rubber hose for refueling and draining oil.
[0032] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.
Claims
1. A rubber hose for aircraft refueling and defueling, characterized in that: It includes an outer protective layer (1), and a heat insulation and flame retardant layer (2) is installed on the outside of the outer protective layer (1). The heat insulation and flame retardant layer (2) includes an inner heat insulation layer (203) in direct contact with the outer protective layer (1), a flame retardant layer (202) installed on the outside of the inner heat insulation layer (203), and an outer heat insulation layer (201) installed on the outside of the flame retardant layer (202).
2. The rubber hose for aircraft refueling and drainage according to claim 1, characterized in that: The inner heat insulation layer (203) is bonded to the outer protective layer (1), and the inner heat insulation layer (203) is a rubber and plastic sponge sleeve.
3. The rubber hose for aircraft refueling and drainage according to claim 1, characterized in that: The flame retardant layer (202) is composed of polyvinyl chloride flame retardant particles, and the flame retardant layer (202) is bonded to the inner heat insulation layer (203).
4. A rubber hose for aircraft refueling and drainage according to claim 1, characterized in that: The outer heat insulation layer (201) is a Teflon rubber layer, and the outer protective layer (1) is bonded to the flame retardant layer (202).
5. The rubber hose for aircraft refueling and fuel drainage according to claim 1, characterized in that: A strengthening layer (3) is installed inside the outer protective layer (1), a steel wire support layer (5) is installed inside the strengthening layer (3), and an inner rubber layer (4) is installed inside the steel wire support layer (5).
6. The rubber hose for aircraft refueling and fuel draining according to claim 5, characterized in that: The strengthening layer (3) is woven from aramid fiber filaments, and the steel wire support layer (5) is a spiral structure.
7. A rubber hose for aircraft refueling and drainage according to claim 5, characterized in that: The inner rubber layer (4) is an antistatic fluororesin layer.