阅读说明：本技术 一种油箱清洗工具及清洗方法 (Oil tank cleaning tool and cleaning method ) 是由 赵庆锋 吴佳元 罗景瑶 于 2021-08-25 设计创作，主要内容包括：本发明涉及飞机机务维护技术领域,具体涉及一种油箱清洗工具及清洗方法,其中油箱清洗工具包括第一管和第二管,第一管内置于第二管中,第一管的入口端和出口端均能与第二管的外部连通,第一管的内部形成第一输送通道,第二管与第一管之间形成第二输送通道,第二管的入口和出口均连通第二输送通道。本发明在同一加油接口可同时引出两个管路分别进行吸油和注油,共同完成油箱清洗工作,避免了反复更换吸油管路和吸油管路的操作,既避免异物带入造成二次污染,也减少了机务人员爬飞机的次数,清洗效率得到有效提高。(The invention relates to the technical field of aircraft maintenance, in particular to a cleaning tool and a cleaning method for an oil tank, wherein the cleaning tool for the oil tank comprises a first pipe and a second pipe, the first pipe is arranged in the second pipe, the inlet end and the outlet end of the first pipe can be communicated with the outside of the second pipe, a first conveying channel is formed inside the first pipe, a second conveying channel is formed between the second pipe and the first pipe, and the inlet and the outlet of the second pipe are communicated with the second conveying channel. According to the invention, two pipelines can be led out from the same oiling interface at the same time to respectively suck and inject oil, so that the oil tank cleaning work is jointly completed, the operation of repeatedly replacing the oil suction pipeline and the oil suction pipeline is avoided, the secondary pollution caused by foreign matter introduction is avoided, the airplane climbing times of crew members are reduced, and the cleaning efficiency is effectively improved.)

1. The utility model provides an oil tank cleaning means, characterized in that, includes first pipe (1) and second pipe (2), place in first pipe (1) in second pipe (2), entry end (1A) and exit end (1B) homoenergetic of first pipe (1) with the outside intercommunication of second pipe (2), the inside of first pipe (1) forms first transfer passage, second pipe (2) with form second transfer passage between first pipe (1), entry (2A) and export (2B) of second pipe (2) all communicate second transfer passage.

2. The tank cleaning tool according to claim 1, characterized in that a protruding structure (6) is provided on the outer wall of the second tube (2), the protruding structure (6) has an outer contour dimension adapted to or larger than the dimension of a gravity fueling port of an aircraft, and the inlet (2A) and the outlet (2B) are located on both sides of the protruding structure (6), respectively.

3. The tank cleaning tool according to claim 2, characterized in that the protruding structure (6) is provided with at least one vent groove (5) on the circumference thereof for communicating the tank with the outside.

4. The cleaning tool for the fuel tank according to claim 1, wherein the first pipe (1) is used for sucking oil, the second pipe (2) is used for filling oil, the outlet (2B) is provided in plurality, the outlet (2B) is circumferentially distributed on the side wall of the second pipe (2), and the end surface of the second pipe (2) is in sealing connection with the first pipe (1).

5. A tank cleaning tool according to claim 4, characterised in that the distance between the inner wall of the second pipe (2) near the inlet (2A) section and the outer wall of the first pipe (1) is greater than the distance between the inner wall of the second pipe (2) near the outlet (2B) section and the outer wall of the first pipe (1).

6. A tank cleaning tool according to any one of claims 1-5, characterised in that the inlet end (1A) and the outlet end (1B) extend beyond the ends of the second tube (2), respectively, the inlet (2A) being arranged in the side wall of the second tube.

7. The fuel tank cleaning tool according to claim 6, characterized in that the outlet end (1B) is provided with a thread, and the outlet end (1B) is used for connecting an oil suction hose.

8. The fuel tank cleaning tool according to any one of claims 1-5, characterized in that a detection tube (4) is arranged in the second conveying channel, one end of the detection tube (4) is used for connecting a pressure sensor (3), the other end of the detection tube is used for communicating with the fuel tank, and the pressure sensor (3) is detachably arranged on the second tube (2).

9. Method for cleaning a tank cleaning tool according to any one of claims 1 to 8, characterized in that the tank cleaning is carried out by connecting the filling line of the cleaning device to the inlet (2A) of the second pipe (2) of the tank cleaning tool, connecting the suction line of the cleaning device to the inlet end (1A) of the first pipe (1) of the tank cleaning tool and inserting the tank cleaning tool into the aircraft gravity filler connection.

10. The cleaning method according to claim 9, characterized in that during the cleaning process of the oil tank, the pressure inside the oil tank is monitored by the pressure sensor (3), and the monitored pressure value is fed back to the background monitoring system by the wireless communication module;

and when the pressure value reaches or exceeds a set threshold value, the background monitoring system mediates the cleaning equipment.

Technical Field

The invention relates to the technical field of aircraft maintenance, in particular to a cleaning tool and a cleaning method for an oil tank.

Background

The main procedures of the traditional cleaning work of the aircraft fuel tank comprise cleaning the fuel tank by using a fuel filling pipeline, extracting cleaning oil in the fuel tank by replacing the pipeline and sampling and detecting. In the cleaning process of the fuel tank, one method is to extend an oil filling pipeline into a gravity oil filling port of an airplane and inject cleaning oil into the airplane fuel tank by using cleaning equipment such as a fuel cleaning vehicle and the like; the cleaning oil tank is characterized in that a nitrogen pipe extends from an oil discharge port of the oil tank to fill nitrogen into the oil tank, and the inner wall of the oil tank is cleaned in a mode of boiling and bubbling the cleaning oil; after the oil tank is cleaned every time, the oil filling pipeline is drawn out and replaced by an oil suction pipeline, and cleaning oil is drawn out; the cleaning is repeated in the mode until the pollution degree of the cleaning oil meets the requirement.

Crew members also often employ another method of operation: uncover the cover and make the oil tank uncovered, the handheld oil pipe that adds of crew member drenches the washing repeatedly to the oil tank, then takes out the washing fluid in the oil tank again, repeats above-mentioned operation until fluid sample detection is qualified. However, in the oil tank cleaning mode of flushing through the handheld oil filling pipeline, oil can splash in the cleaning process, the surface of an airplane and other finished products are polluted, and meanwhile, the cleaning mode is not beneficial to the health of crew members.

The oil tank cleaning work needs the crew to climb up and down the airplane, the oil filling pipeline and the oil suction pipeline are repeatedly and alternately used, redundant materials are easily brought in, secondary pollution is caused to the oil tank, and the oil tank cleaning work efficiency is low.

Disclosure of Invention

The invention aims to: the oil tank cleaning tool and the cleaning method are provided, and the oil tank cleaning tool and the cleaning method are integrated, so that the oil tank cleaning efficiency is improved.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides an oil tank cleaning means, includes first pipe and second pipe, arranges the second in the first pipe in, the entry end and the exit end homoenergetic of first pipe and the outside intercommunication of second pipe, the inside of first pipe forms first transfer passage, forms second transfer passage between second pipe and the first pipe, the entry and the export of second pipe all communicate second transfer passage.

The oil tank cleaning tool provided by the invention is used for plugging an oil suction pipeline and an oil filling pipeline of cleaning equipment at an aircraft gravity oil filling interface so as to clean an aircraft oil tank; the first conveying channel is used for sucking oil from the oil tank or filling oil into the oil tank, and correspondingly, the second conveying channel is used for filling oil into the oil tank or sucking oil from the oil tank; the first pipe is arranged in the second pipe to form a structural form of 'pipe-in-pipe', the first pipe is utilized to connect the oil suction pipeline/oil filling pipeline of the cleaning equipment, and the second pipe is connected with the oil filling pipeline/oil suction pipeline of the cleaning equipment, and the two pipelines are not interfered with each other. According to the invention, two pipelines can be simultaneously led out from the same oiling interface to respectively suck and inject oil to complete the cleaning work of the oil tank, so that the repeated replacement operation of the oil suction pipeline and the oil filling pipeline is avoided, the secondary pollution caused by foreign matter introduction is avoided, the number of times of aircraft crews climbing an aircraft is reduced, and the cleaning efficiency is effectively improved. It will be appreciated by those skilled in the art that in order to enable the tank cleaning tool to access both the filler line and the suction line, the inlet end of the first tube and the inlet end of the second tube should be staggered, i.e. the inlet end and the inlet should be led out from different positions, and at the same time there should be a suitable space for access of the cleaning apparatus without interference.

Preferably, the outer wall of the second pipe is provided with a protruding structure, the external contour size of the protruding structure is matched with or larger than the size of the gravity refueling interface of the airplane, and the inlet and the outlet of the second pipe are respectively positioned on two sides of the protruding structure. The protruding structure is used for isolating the external interface from the oil tank; when placing this oil tank cleaning means in aircraft gravity tank filler hole and using, this device self weight can be supported to the protruding structure, does not need the supplementary support of crew member to use, also can play the inside fluid of isolation oil tank and splash or block the effect that the foreign matter got into.

Preferably, the protruding structure is circumferentially provided with at least one vent groove capable of communicating the oil tank with the outside. The setting of air discharge duct is used for excreting the pressure that the cleaning process produced in the oil tank, avoids the oil tank to take place the danger of inflation even explosion, plays the safety protection effect.

Preferably, the first pipe is used for sucking oil, and the second pipe is used for filling oil; the export of second pipe is provided with a plurality ofly, and export circumference distributes on the lateral wall of second pipe, sealing connection between second pipe terminal surface and the first pipe. The oil tank inner wall jet device has the advantages that injected oil can be jetted to the inner wall of the oil tank in a bundled mode under the high-pressure effect, the oil stain cleaning effect is achieved, the nitrogen boiling mode is avoided, the cost is low, and the cleaning is simple, direct and rapid.

Preferably, the second pipe is close to the interval between the inner wall of entry section and the first tub of outer wall, is greater than the interval between the inner wall that the second pipe is close to the exit section and the first tub of outer wall, does benefit to the jet velocity and the water impact that improve the orifice, improves the clearance effect of oil tank inner wall greasy dirt.

Preferably, the inlet end and the outlet end of the first pipe respectively protrude from both ends of the second pipe, and the inlet of the second pipe is disposed on the sidewall of the second pipe. The first pipe is used for oil absorption, the second pipe is used for oil filling, and the positions of the interfaces of the first pipe and the second pipe are reasonably arranged, so that the oil absorption at the inlet side and the oil filling interface can be conveniently assembled, and the positions are not interfered; wherein the exit end of the first pipe of internal-setting is more close to the oil liquid level setting as the oil absorption mouth, more does benefit to the oil absorption work and goes on, can make oil absorption and refuel work go on simultaneously.

Preferably, the outlet end of the first tube is provided with threads, and the outlet end is used for connecting an oil suction hose. The oil suction hose is convenient to connect in the setting of screw thread, also can increase contact friction, prevents that the oil suction hose from dropping.

Preferably, be equipped with the test tube in the second transfer passage, the one end of test tube is used for connecting pressure sensor, the other end is used for communicateing the oil tank, and pressure sensor demountable installation is on the second pipe. The pressure sensor and the oil tank are connected through the detection pipe in the oil tank cleaning tool, the internal pressure of the oil tank is monitored by the pressure sensor, and the oil tank cleaning tool is used for carrying out early warning and danger prevention and control on monitoring information transmitted by a background monitoring system in a communication mode.

The invention also provides a cleaning method applying the oil tank cleaning tool, wherein an oil filling pipeline of the cleaning device is connected with an inlet of a second pipe of the oil tank cleaning tool, an oil suction pipeline of the cleaning device is connected with an inlet end of a first pipe of the oil tank cleaning tool, and the oil tank cleaning tool is inserted into the airplane gravity oil filling interface to clean the oil tank.

The special oil tank cleaning tool is directly inserted into the gravity oiling interface of the airplane, an oiling pipeline and an oil suction pipeline of the cleaning equipment are simultaneously connected to the oil tank cleaning tool for cleaning, a cover does not need to be uncovered for showering, the pipeline does not need to be repeatedly replaced, a crew does not need to climb up and down the airplane for multiple times, secondary pollution caused by foreign matter is avoided, the defects that oil splashes and pollutes the surface of the airplane and finished products in the cleaning process are avoided, and the oil tank cleaning efficiency is effectively improved.

Preferably, in the process of cleaning the oil tank, the pressure inside the oil tank is monitored by a pressure sensor, and the monitored pressure value is fed back to the background monitoring system by the wireless communication module;

and when the pressure value reaches or exceeds a set threshold value, the background monitoring system mediates the cleaning equipment. The cleaning method provided by the invention has the advantages of high safety performance and high cleaning efficiency.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. the oil tank cleaning tool provided by the invention integrates spraying and sucking, can simultaneously lead out two pipelines from the same oil filling interface to respectively suck oil and fill oil to complete the oil tank cleaning work, the two pipelines are not interfered with each other, the operation of repeatedly replacing the oil suction pipeline and the oil filling pipeline is avoided, the secondary pollution caused by foreign matter is avoided, the number of times of aircraft crews climbing an aircraft is reduced, and the cleaning efficiency is effectively improved.

2. The oil tank cleaning tool provided by the invention can be directly inserted into a gravity oil filling port of an airplane, does not need to be supported by crew and is convenient and quick to use.

3. According to the oil tank cleaning tool provided by the invention, the injected oil is sprayed to the inner wall of the oil tank in a bundle under the action of high pressure, so that the oil stain cleaning effect is achieved, the inner wall cleaning effect is achieved in a nitrogen boiling mode, the cost is low, and the cleaning is simple, direct and rapid.

4. According to the cleaning method provided by the invention, the specially-made oil tank cleaning tool is directly inserted into the gravity oiling interface of the airplane, the oil filling pipeline and the oil suction pipeline of the cleaning equipment are simultaneously connected to the oil tank cleaning tool for cleaning, the cover does not need to be uncovered for spraying, the pipeline does not need to be repeatedly replaced, a crew does not need to climb up and down the airplane for multiple times, secondary pollution caused by foreign matter introduction is avoided, the defects that oil splashes and pollutes the surface of the airplane and finished products in the cleaning process are also avoided, and the cleaning efficiency of the oil tank is effectively improved.

5. According to the oil tank cleaning tool and the cleaning method provided by the invention, the pressure sensor is arranged for monitoring the internal pressure of the oil tank, and the monitoring data is fed back to the background monitoring system in real time, so that the background monitoring system can perform early warning and danger prevention and control conveniently, and the stable and safe cleaning work is ensured.

Drawings

Fig. 1 is a schematic structural diagram of a fuel tank cleaning tool.

Fig. 2 is a schematic view of the internal structure of the fuel tank cleaning tool.

Icon: 1-a first tube; 1A-inlet end; 1B-an outlet end; 2-a second tube; 2A-inlet; 2B-an outlet; 3-a pressure sensor; 4-detecting tube; 5-an exhaust groove; 6-convex structure.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

A cleaning tool for an oil tank comprises a first pipe 1 and a second pipe 2, wherein the first pipe 1 is arranged in the second pipe 2, an inlet end 1A and an outlet end 1B of the first pipe 1 can be communicated with the outside of the second pipe, a first conveying channel is formed inside the first pipe 1, a second conveying channel is formed between the second pipe 2 and the first pipe 1, and an inlet 2A and an outlet 2B of the second pipe 2 are communicated with the second conveying channel.

The oil tank cleaning tool provided by the embodiment is used for plugging an oil suction pipeline and an oil filling pipeline of cleaning equipment at an aircraft gravity oil filling interface so as to clean an aircraft oil tank; the first conveying channel is used for sucking oil from the oil tank or filling oil into the oil tank, and correspondingly, the second conveying channel is used for filling oil into the oil tank or sucking oil from the oil tank; the first pipe 1 is arranged in the second pipe 2 to form a pipe-in-pipe structure, the first pipe 1 is connected with an oil suction pipeline/an oil filling pipeline of the cleaning equipment, the second pipe is connected with the oil filling pipeline/the oil suction pipeline, and the two connecting pipelines are not interfered with each other.

Specifically, in this embodiment, a protruding structure 6 is disposed on the outer wall of the second pipe 2, the external dimension of the protruding structure 6 is adapted to or larger than the gravity fueling port of the aircraft, and the inlet 2A and the outlet 2B of the second pipe 2 are respectively located on two sides of the protruding structure 6. The protruding structure 6 is used for isolating an external interface from the oil tank; when placing this oil tank cleaning means in aircraft gravity tank filler hole and using, this device self weight can be supported to protrusion structure 6, does not need the supplementary support of crew member to use, also can play the inside fluid of isolation oil tank and splash or block the effect that the foreign matter got into.

The protruding structure 6 is provided with at least one vent groove 5 capable of communicating the oil tank and the outside in the circumferential direction. The vent 5 is arranged to vent the pressure generated in the tank during the cleaning process, avoiding the risk of the tank expanding or even exploding. Here, the vent groove 5 is provided in the circumferential direction of the projection structure 6, and it should be understood that the vent groove 5 is not limited to being provided on the outer wall of the projection structure 6. The exhaust groove 5 can be a through groove, namely, the upper surface and the lower surface of the protruding structure 6 are communicated; the exhaust grooves 5 can be also preferably arranged to be opened at the circumferential direction and the bottom, so that splashing and foreign matters are avoided; it should be understood that the vent slot 5 should not communicate with the transfer passage in the second tube 2.

Further, in the embodiment, the first pipe 1 is used for oil absorption, and the second pipe 2 is used for oil filling; the outlet 2B of the second pipe 2 is provided in plural, and the plural outlets 2B are circumferentially distributed on the side wall of the second pipe 2, that is, in a spray hole form. The oil tank inner wall jet device has the advantages that injected oil can be jetted to the inner wall of the oil tank in a bundled mode under the high-pressure effect, the oil stain cleaning effect is achieved, the nitrogen boiling mode is avoided, the cost is low, and the cleaning is simple, direct and rapid. Meanwhile, in order to ensure that the oil can be sprayed from the spray holes at a high speed and have a good dirt cleaning effect, the end surface of the second pipe 2 and the first pipe 1 are in sealed connection as much as possible, and the circulation of the specific path of the first conveying channel is maintained. Further, the second pipe 2 is close to the interval between the inner wall of entry 2A section and the first outer wall of managing 1, is greater than the interval between the inner wall that second pipe 2 is close to export 2B section and the first outer wall of managing 1, also is favorable to improving the jet velocity and the water impact of export, improves the clearance effect of oil tank inner wall greasy dirt.

Accordingly, the present embodiment extends the inlet end 1A and the outlet end 1B of the first pipe 1 out of both ends of the second pipe 2, respectively, and the inlet 2A of the second pipe 2 is disposed on the side wall of the second pipe. The inlet end 1A of the first pipe 1 and the inlet end 2A of the second pipe 2 are preferably arranged towards the same side, so that the connection is convenient; the inlet end 1A of the first pipe 1 can be bent from the top of the first pipe 1 to be obliquely arranged upwards, and is isolated from the inlet 2A of the second pipe 2, so that interface interference is avoided. The first pipe 1 is used for oil absorption, the second pipe is used for oil filling, the inlet and outlet connector positions of the first pipe 1 and the second pipe 2 are reasonably arranged, the oil absorption and oil filling connector assembly at the inlet side is facilitated, and the positions are not interfered; wherein with the exit end 1B of built-in first pipe 1 more be close to the oil liquid level setting as the oil absorption mouth, more do benefit to the oil absorption work and go on, can make oil absorption and refuel work go on simultaneously. Further, a thread may be provided at the outlet end 1B of the first tube 1, said outlet end 1B being for connection to an oil suction hose. The oil suction hose is convenient to connect in the setting of screw thread, also can increase contact friction, prevents that the oil suction hose from dropping.

Furthermore, a detection pipe 4 is arranged in the second conveying channel, one end of the detection pipe 4 is used for being connected with the pressure sensor 3, the other end of the detection pipe 4 is used for being communicated with an oil tank, and the pressure sensor 3 is detachably arranged on the second pipe 2; the present embodiment mounts the pressure sensor 3 on top of the second tube 2. Connect pressure sensor 3 and oil tank through setting up sense tube 4 in the oil tank cleaning means, utilize pressure sensor 3 monitoring oil tank internal pressure for with backstage monitored control system communication transmission monitoring information carry out early warning and danger prevention and control.

The oil tank cleaning tool that this embodiment provided collects and spouts and inhale integratively, draws forth two pipelines simultaneously at same oiling interface and inhales oil and oiling respectively, accomplishes oil tank cleaning work jointly, has avoided changing the operation of inhaling oil pipe way and oiling pipeline repeatedly, has both avoided the foreign matter to bring into and has caused secondary pollution, has also reduced the number of times that the aircraft crew climbed the aircraft, and the cleaning efficiency is effectively improved.

It should be noted that the inlet 2A of the second pipe 2 may be disposed on the top or on the side wall; the entry 2A can directly be the trompil form, and cleaning equipment passes through the sealed plug connection of adapter, also can be for the pipeline structure with first transfer passage intercommunication, is convenient for directly overlap and establishes. The arrangement of the inlet and outlet ends of the second tube 2 is not limited to the above-described preferred mode.

Example 2

The invention also provides a cleaning method applying the oil tank cleaning tool, which comprises the following steps: connecting an oil filling pipeline of the cleaning equipment with a second pipe 2 of an oil tank cleaning tool, connecting an oil suction pipeline of the cleaning equipment with a first pipe 1 of the oil tank cleaning tool, and inserting the oil tank cleaning tool into an aircraft gravity oil filling interface to clean the oil tank. The specific cleaning steps mainly comprise:

inserting the fuel tank cleaning tool described in embodiment 1 into an aircraft gravity refueling interface;

connecting an oil filling pipeline of the cleaning equipment to the inlet 2A of the second pipe 2, and connecting an oil suction pipeline of the cleaning equipment to the inlet end 1A of the first pipe 1;

starting the cleaning equipment: cleaning oil can be injected into the aircraft oil tank at high pressure, and after the preset oil amount is input, the cleaning oil is pumped out of the aircraft oil tank, and the operation of injecting the cleaning oil can be continued or stopped; or the oiling pump and the oil pump of the cleaning equipment are started simultaneously, and oil is pumped while being injected; the working sequence of the oil feeding pump and the oil pumping pump in the cleaning equipment can be adjusted according to the actual condition without being limited to the above condition;

and repeatedly cleaning the oil tank until the pollution degree meets the requirement, namely stopping the cleaning equipment and recovering.

This embodiment is through using above-mentioned purpose-made oil tank cleaning means disect insertion to refuel the kneck at aircraft gravity, insert cleaning equipment's oil feeding pipeline and oil absorption pipeline simultaneously and carry out cleaning work on oil tank cleaning means, need not reveal the cover and wash and drench, also need not change the pipeline repeatedly, the aircraft crew does not need to climb on many times and climb down the aircraft, it brings into and causes secondary pollution to have avoided the foreign matter, also avoided the cleaning process to produce fluid to splash, pollute aircraft surface and off-the-shelf drawback, oil tank cleaning efficiency has effectively been improved.

Further, during the cleaning process of the oil tank, the pressure sensor 3 is used for monitoring the internal pressure of the oil tank in real time, and the monitored pressure value is fed back to the background monitoring system through the wireless communication module; and when the pressure value reaches or exceeds a set threshold value, the background monitoring system regulates and stops the cleaning equipment to work. The cleaning method provided by the embodiment has high safety performance and high cleaning efficiency.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.