Portable tool special for pressure relief of refueling connector

Abstract

The utility model discloses a portable special tool for pressure relief of a refueling connector, and belongs to the technical field of aviation refueling equipment, the portable special tool comprises an oil discharge pipe, a protective cover and a safety assembly, one end of the oil discharge pipe is provided with an insertion pipe used for being inserted into the refueling connector, the outer wall of the insertion pipe is sleeved with the protective cover, and the other end of the oil discharge pipe is detachably connected with external liquid storage equipment; the safety assembly is arranged on the oil discharge pipe and used for balancing the potential difference between the refueling connector and the external liquid storage equipment. According to the utility model, oil can be prevented from splashing through the protective cover, and the oil is restrained and collected in the inner cavity of the protective cover, so that waste and environmental pollution caused by oil splashing can be avoided, economic loss is reduced, oil mist or oil is effectively prevented from being in direct contact with a worker to cause harm to the body health of the worker, and the service life of the worker is prolonged. The probability of occurrence of secondary accidents such as worker slipping and equipment damage caused by oil sputtering is reduced, the structural design is simple and reasonable, and the use is safe and reliable.

Description

TECHNICAL FIELD

[0001] The utility model relates to aviation refueling equipment technical field especially, relates to a portable refueling connector pressure relief special tool. BACKGROUND

[0002] Aviation refueling connector is the key part of aircraft ground refueling, and it usually adopts quick docking structure, realizes high pressure sealing and on-off control of oil circuit through internal valve. Aviation refueling connector is usually made of high-strength alloy or composite material, has the characteristics such as light weight, corrosion resistance, and some models also integrate pressure sensor to monitor the oil circuit state in real time. Through aviation refueling connector, reliable and stable refueling operation under high pressure and high flow conditions can be ensured, and quick connection and separation are supported to adapt to the efficient needs of aviation operation.

[0003] At present, in the maintenance process of aviation refueling connector, in order to ensure the operation safety, and avoid oil instantaneous injection and the like, the staff usually needs to carry out pressure relief operation on aviation refueling connector, however, due to the lack of special pressure relief tool for a long time, the staff can only use screwdrivers, wrenches and other non-special tools for pressure relief operation, but this operation mode has significant deficiencies: on the one hand, non-special tools do not match the connector structure, which is easy to cause oil instantaneous spatter or leakage, not only causes oil waste and economic loss, but also pollutes the environment; on the other hand, the oil mist or oil spattered from the connector is easy to directly contact the skin of the staff or be inhaled through the respiratory tract, which is easy to cause harm to the health of the staff. In addition, the sudden high-pressure aviation oil injection is also easy to cause secondary accidents such as staff slipping and equipment damage, and reduces the use safety. Therefore, it is urgent to design a special pressure relief tool with simple structure, safe operation and effective oil recovery. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at overcoming the defects in the prior art, and provides a special pressure relief tool for aviation refueling connector, which has simple structure, safe operation and can effectively recover oil.

[0005] To achieve the above-mentioned purpose, the utility model provides a portable refueling connector pressure relief special tool, which comprises an oil discharge pipe, a protective cover and a safety assembly, one end of the oil discharge pipe is provided with a cannula for inserting the refueling connector, the protective cover is sleeved on the outer wall of the cannula, and the other end of the oil discharge pipe is detachably connected with an external liquid storage device; the safety assembly is arranged on the oil discharge pipe and is used for balancing the potential difference between the refueling connector and the external liquid storage device.

[0006] Preferably, the safety assembly comprises a wire and two electrostatic clips, the wire is arranged on the outer wall of the oil discharge pipe, and two ends of the wire are connected with the two electrostatic clips respectively, and the two electrostatic clips are used for detachable connection with the oil filler neck and the external liquid storage device respectively.

[0007] Preferably, the wire is arranged in the oil discharge pipe, and two ends of the wire extend out of the oil discharge pipe and are connected with the two electrostatic clips respectively.

[0008] Preferably, the oil discharge pipe and the safety assembly are integrated.

[0009] Preferably, the oil discharge pipe and the protective cover are both made of transparent material, and the end of the protective cover away from the oil discharge pipe is open and provided with a sealing ring.

[0010] Preferably, the outer wall of the protective cover is connected with a drainage tube which is detachable connected with the external liquid storage device.

[0011] Beneficial effects:

[0012] 1. In the use process of the utility model, the staff inserts the pipe into the pressure relief port of the oil filler neck, and abuts the protective cover to the outer wall of the oil filler neck, so that the residual oil in the oil filler neck can flow out along the pipe and the oil discharge pipe and be transported into the external liquid storage device, thereby completing the collection and taking operation of the oil, and the structure design is simple and reasonable, and convenient to use.

[0013] 2. In the utility model, the protective cover can block the oil splashing and collect the oil in the inner cavity of the protective cover, so that not only the waste and environmental pollution caused by the oil spilling can be avoided, the economic loss is reduced, the direct contact between the oil mist or oil and the staff is effectively prevented, the harm to the health of the staff is caused, and the probability of secondary accidents such as the staff slipping and the equipment being damaged caused by the oil splashing is reduced, so that the use is safe and reliable.

[0014] 3. In the use process of the utility model, when the protective cover is filled with oil, the staff only needs to pour the oil into the external liquid storage device to quickly recover the splashed oil, further reduce the waste of oil, and improve the economy and work efficiency.

[0015] 4. In the utility model, the safety assembly can generate a potential difference between the oil filler neck and the external liquid storage device, so that the discharge spark caused by the charge accumulation is avoided, the safety hazard of the discharge spark igniting the oil vapor is eliminated, and the use safety is significantly improved.

[0016] 5.The portable oil filling connector pressure relief tool is used when not in use, and the oil discharge pipe can be wound and bound by the staff, thereby facilitating carrying and taking, and being beneficial for carrying and storage. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0018] Figure 1 is a structural schematic view of a portable oil filling connector pressure relief tool according to an embodiment of the present application.

[0019] In the figure: 1-oil discharge pipe; 2-protective cover; 3-insert pipe; 4-lead static clamp; 5-sealing ring. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0023] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the product of the application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second" and the like appear in the description of the present application, they are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] In addition, if the terms "horizontal", "vertical" and the like appear in the description of the present application, they do not mean that the component must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Embodiment 1:

[0027] The utility model provides a portable oil filling connector pressure relief special tool.

[0028] In an embodiment of the utility model, a portable oil filling connector pressure relief special tool includes oil discharge pipe 1, protective cover 2 and safety assembly, one end of oil discharge pipe 1 is provided with the spout 3 for inserting the oil filling connector, the outer wall of spout 3 is sleeved with protective cover 2, the other end of oil discharge pipe 1 is detachably connected with external liquid storage equipment;Safety assembly is arranged on oil discharge pipe 1 and is used for balancing the potential difference between oil filling connector and external liquid storage equipment.

[0029] Specifically, as Figure 1As shown, the portable oil filler neck pressure relief special tool in the use process, the staff inserts the pipe 3 into the pressure relief port of the oil filler neck, and abuts the protective cover 2 to the outer wall of the oil filler neck, so that the residual oil in the oil filler neck can flow out along the pipe 3 and the oil discharge pipe 1 and be transported into the external liquid storage equipment, thereby completing the collection and taking operation of the oil, the structure is simple, reasonable and convenient to use. Further, since the protective cover 2 is sleeved on the outer wall of the pipe 3, when the pipe 3 is inserted into the oil filler neck, if the oil is instantaneously splashed out, the protective cover 2 can block the oil splash and collect the oil in the inner cavity of the protective cover 2, thereby not only avoiding the waste and pollution of the environment caused by the oil leakage, reducing the economic loss, but also effectively preventing the oil mist or oil from directly contacting the staff and causing harm to the health of the staff, and reducing the probability of secondary accidents such as staff slipping and equipment damage caused by oil splashing, safe and reliable to use.

[0030] Understandably, the external liquid storage equipment can be a water bucket, an oil recovery tank or an oil circulation system, etc., when the protective cover 2 is filled with oil, the staff only needs to pour the oil into the external liquid storage equipment to quickly recover the splashed oil, further reducing the waste of oil and improving the economic efficiency and work efficiency; at the same time, the portable oil filler neck pressure relief special tool in the actual manufacturing process, the staff can open the oil outlet on the outer wall of the protective cover 2 and install the plug in the oil outlet, when the oil in the protective cover 2 needs to be discharged, the staff can remove the plug so that the oil can flow out of the oil outlet to the external liquid storage equipment, without removing the protective cover 2 and the pipe 3 to pour the oil, realizing the synchronous discharge of the protective cover 2 and the oil filler neck, not only simplifying the operation steps, reducing the labor intensity of the staff, but also further improving the work efficiency, reliable to use.

[0031] Need to be explained is that, since the oil discharge pipe 1 is provided with a safety component, the safety component can be an anti-static wire or an equipotential connector, etc., so that the potential difference between the oil filler neck and the external liquid storage equipment can be balanced through the safety component, thereby avoiding the discharge spark caused by charge accumulation, eliminating the safety hazard of the discharge spark igniting the oil vapor, and significantly improving the safety in use. In addition, the portable oil filler neck pressure relief special tool is not used, the staff can wind and bind the oil discharge pipe 1, thereby facilitating carrying and taking, being beneficial to carrying and storing.

[0032] In an embodiment, the safety component includes a wire and two static electricity clamps 4, the wire is wound on the outer wall of the oil discharge pipe 1, and the two ends of the wire are connected with the two static electricity clamps 4 respectively, and the two static electricity clamps 4 are respectively used for detachable connection with the oil filler neck and the external liquid storage equipment. Specifically, as shown in Figure 1As shown, by winding the wire spirally on the outer wall of the oil discharge pipe 1, not only the wire interference with the oil flow is avoided, but also the synchronous bending of the wire and the oil discharge pipe 1 is ensured, and the structure design is simple and reasonable; at the same time, since the two static electricity guides 4 are connected to the two ends of the wire respectively, the static electricity guides 4 can be alligator clips or magnetic clips, and the static electricity guides 4 have insulating handles and anti-skid tooth patterns, so that the operation safety of the staff using the static electricity guides 4 can be ensured, and reliable clamping in the oil environment can be adapted. Specifically, the portable oil filling connector pressure relief special tool in the use process, the staff clamps two static electricity guides 4 on the metal shell of the oil filling connector and the external liquid storage equipment (such as the edge of the metal bucket), so as to form a closed conductive path, and then the potential difference is forced to balance before pressure relief, realizing electrostatic protection and improving the use safety.

[0033] In another embodiment, as shown in the drawings, Figure 1 The wire is arranged in the oil discharge pipe 1, and the two ends of the wire extend out of the oil discharge pipe 1 and are connected to the two static electricity guides 4. It can be understood that the wire can be an oil-resistant insulated wire in the prior art, by arranging the wire in the oil discharge pipe 1 and enabling the wire to form a coaxial layout with the oil discharge pipe 1, the wear risk caused by external winding of the wire can be avoided, and the flexibility of the wire and the oil discharge pipe 1 as a whole can be maintained, and the structure design is simple and reasonable.

[0034] In still another embodiment, the oil discharge pipe 1 and the safety assembly are integrated. As shown in the drawings, Figure 1 It can be understood that by integrating the oil discharge pipe 1 and the safety assembly, the assembly step between the oil discharge pipe 1 and the safety assembly can be omitted, the assembly gap is avoided, the assembly error is eliminated, and the manufacturing is easy. Further, the oil discharge pipe 1 can be a steel wire wound conductive rubber pipe, which generally includes three layers from the inside to the outside, i.e. an inner lining layer, a reinforcing layer and an outer layer. The inner layer is an oil-resistant fluororubber pipe, which can ensure the passability of the oil; the reinforcing layer is a spiral copper-plated steel wire mesh, which can not only serve as a pressure bearing framework of the oil discharge pipe 1, but also form a continuous conductive path; the outer layer can be an ultraviolet-resistant neoprene, which can cover and shield the inner lining layer and the reinforcing layer, and at the same time, an electrostatic grounding mark is marked on the surface of the outer layer to improve the use safety. It should be noted that the copper-plated steel wire mesh is provided with a quick-release grounding terminal at both ends by laser welding, thereby forming a complete conductive path from the oil filling connector to the external liquid storage equipment.

[0035] In an embodiment, as shown in the drawings, Figure 1As shown, the oil drain pipe 1 and the protective cover 2 are both transparent material pieces; the end of the protective cover 2 away from the oil drain pipe 1 is open and provided with a sealing ring 5. Understandably, by adopting the transparent material pieces for the oil drain pipe 1 and the protective cover 2, it is convenient for the staff to visually check the flow state of the oil in the oil drain pipe 1 and the accumulation of the oil mist or oil in the protective cover 2, thereby improving the controllability of the pressure relief operation. Further, when the staff inserts the insertion pipe 3 into the oil filler joint, at this time, the protective cover 2 abuts against the oil filler joint and closes the opening, and at the same time, the sealing ring 5 at the opening is elastically deformed under the pressure and fills the gap between the protective cover 2 and the oil filler joint, thereby effectively preventing the oil from leaking and ensuring the collection effect of the oil, which is reliable in use.

[0036] In an embodiment, an external drainage pipe is connected to the outer wall of the protective cover 2 and detachably connected to an external oil storage device. Specifically, as shown in the drawings, Figure 1 By the external drainage pipe, the oil in the protective cover 2 can be directly delivered to the external oil storage device, without the need for the staff to perform other recovery operations on the oil in the protective cover 2, which is more simple and convenient in use and improves the work efficiency. In addition, the detachable connection between the external drainage pipe and the external oil storage device can be a buckle or a clamping sleeve joint, so as to clamp and limit the external drainage pipe, prevent the external drainage pipe from shaking at will and affecting the normal flow of the oil into the external oil storage device, and ensure the drainage effect of the oil in the protective cover 2.

[0037] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A portable special tool for relieving pressure of a fuel filler neck, characterized in that, The oil drain pipe (1) is provided with a spout (3) at one end for inserting into a fuel filler, the spout (3) is sleeved with a protective cover (2) on the outer wall, and the other end of the oil drain pipe (1) is detachably connected with an external liquid storage device; the safety assembly is arranged on the oil drain pipe (1) and is used for balancing the potential difference between the fuel filler and the external liquid storage device.

2. The portable fuel filler connector pressure relief tool of claim 1, wherein, The safety assembly comprises a wire and two electrostatic conductive clamps (4), the wire is wound on the outer wall of the oil drain pipe (1), and the two ends of the wire are respectively connected with the two electrostatic conductive clamps (4), and the two electrostatic conductive clamps (4) are respectively used for detachable connection with the fuel filler and the external liquid storage device.

3. The portable refueling connector pressure relief tool of claim 2, wherein, The wire is arranged in the oil drain pipe (1), and the two ends of the wire respectively extend out of the oil drain pipe (1) and are connected with the two electrostatic conductive clamps (4).

4. The portable fuel filler connector pressure relief tool of claim 1, wherein, The oil drain pipe (1) and the safety assembly are of an integrated structure.

5. A special tool for pressure relief of portable refueling connector according to any of claims 1-4, characterized in that, The oil drain pipe (1) and the protective cover (2) are both made of transparent material; the end of the protective cover (2) away from the oil drain pipe (1) is open and provided with a sealing ring (5).

6. The portable refueling connector pressure relief tool of claim 5, wherein, The outer wall of the protective cover (2) is connected with a drainage tube which is detachably connected with the external liquid storage device.

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