Aviation fuel storage tank and sampling joint device for fuel inspection of aviation fuel storage tank

Abstract

The utility model discloses an aviation fuel storage tank and a sampling joint device for fuel inspection of the aviation fuel storage tank, the sampling joint device comprises a joint pipe part, a flange part and a sampling part, one end of the joint pipe part is installed on the tank wall of the aviation fuel storage tank, and the other end of the joint pipe part is connected with the sampling part through the flange part; the joint pipe part comprises a joint pipe; the flange component comprises a flange main body and a flange cover, the flange main body is fixedly connected with the joint pipe, and the flange main body and the flange cover are detachably connected together; the sampling component comprises three sampling pipes, and the sampling pipes are fixed on the flange cover and can extend into the joint pipe so as to be connected with an upper sampling hose, a middle sampling hose or a lower sampling hose in the aviation fuel storage tank. According to the technical scheme, a novel connection mode of the sampling pipe and the joint pipe is provided, and later maintenance and overhaul of the sampling joint device are facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of aviation fuel quality control, and more specifically, to an aviation fuel storage tank and a sampling and connecting device for fuel inspection thereof. Background Art

[0002] The quality of aviation fuel is one of the key links to ensure the smooth take-off and landing of civil aircraft and the safety of navigation. According to regulations, at least 30 minutes after receiving the aviation fuel, the upper, middle and lower samples of the aviation fuel stored in the aviation fuel tank must be extracted and each sample must be inspected. It can only be used after the inspection results meet the standard requirements.

[0003] At present, the sampling and jointing device for fuel inspection in aviation kerosene storage tanks adopts a "distributed" structure, which usually requires opening three holes on the bottom ring tank wall plate of the aviation kerosene storage tank, and then welding the upper joint tube, the middle joint tube and the lower joint tube to the three holes respectively. The upper sampling hose, the middle sampling hose and the lower sampling hose are provided inside the aviation kerosene storage tank, and the three sampling hoses are connected to the three sampling tubes of the sampling jointing device through the corresponding three joint tubes. For aviation kerosene storage tanks, on the one hand, since the dispersed joint tubes are directly welded to the tank wall, it is inconvenient to remove them, which is not conducive to adjusting the combination of the sampling tube and the sampling hose inside the aviation kerosene storage tank through the joint tube during the later maintenance and repair; on the other hand, the more holes are opened in the tank wall, the greater the risk of fuel leakage due to welding quality problems.

[0004] Therefore, how to improve the connection method between the coupling tube and the sampling tube to facilitate subsequent maintenance and inspection, and then consider how to reduce the number of openings in the wall of the aviation fuel storage tank and reduce the risk of fuel leakage caused by welding quality problems, has become a technical problem that needs to be solved in this field. Utility Model Content

[0005] In view of this, the present application proposes a novel sampling and joint device for fuel inspection in aviation kerosene storage tanks, which can effectively solve the problems of inconvenient maintenance and repair of existing sampling and joint devices and increased risk of fuel leakage due to a large number of openings in the tank wall.

[0006] According to the present application, a sampling joint device for fuel inspection in aviation kerosene storage tanks is proposed, comprising a joint tube component, a flange component and a sampling component, wherein one end of the joint tube component is mounted on the tank wall of the aviation kerosene storage tank, and the other end is connected to the sampling component via the flange component; the joint tube component comprises a joint tube; the flange component comprises a flange body and a flange cover, the flange body is fixedly connected to the joint tube, and the flange body and the flange cover are detachably connected together; the sampling component comprises three sampling tubes, the sampling tubes are fixed to the flange cover and can extend into the joint tube to be connected to an upper sampling hose, a middle sampling hose or a lower sampling hose inside the aviation kerosene storage tank.

[0007] Preferably, the joining pipe component includes only one joining pipe, and the three sampling tubes are respectively fixed to the flange cover through three butt-welded branch pipes arranged on the flange cover and extend into the interior of the joining pipe and are respectively connected to the upper sampling hose, the middle sampling hose and the lower sampling hose.

[0008] Preferably, there is a gap between the sampling tube and the inner wall of the joining tube.

[0009] Preferably, the gap is 2cm-3cm.

[0010] Preferably, there are gaps between the sampling tubes in the joining tube.

[0011] Preferably, the sampling component comprises three control valves corresponding to the sampling tubes one by one, and the control valves are connected to the sampling tubes via flange connectors of the sampling component.

[0012] Preferably, the sampling component includes two tees and a sampling lead-out tube, one sampling tube is connected to the sampling lead-out tube, and the other two sampling tubes are respectively connected to the sampling lead-out tube via the adapter of the tees.

[0013] Preferably, the butt-welded pipe supports are evenly distributed on the flange cover.

[0014] In addition, the present application also provides an aviation fuel storage tank, which includes the sampling and coupling device described above.

[0015] Preferably, the aviation fuel storage tank includes a tank body and an upper sampling hose, a middle sampling hose and a lower sampling hose arranged in the tank body, the tank wall of the tank body is provided with an opening, the connecting pipe component is sealingly connected to the opening, and the three sampling tubes are respectively connected to the upper sampling hose, the middle sampling hose and the lower sampling hose.

[0016] According to the technical solution of the present application, by fixing the sampling tube of the sampling joint device on the flange cover, a detachable connection between the sampling tube and the joint tube is achieved, which facilitates the later maintenance and inspection of the sampling joint device.

[0017] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present application are used to provide a further understanding of the present application, and the schematic implementation modes and descriptions of the present application are used to explain the present application. In the accompanying drawings:

[0019] Figure 1 A three-dimensional diagram of a sampling and coupling device for fuel inspection of a jet fuel storage tank according to a preferred embodiment of the present application;

[0020] Figure 2 for Figure 1 A three-dimensional view from another angle of the sampling joint device for fuel inspection in the aviation kerosene storage tank. DETAILED DESCRIPTION

[0021] The technical solution of the present application will be described in detail below with reference to the accompanying drawings and in combination with the implementation modes.

[0022] In order to solve the problem that the existing sampling and joint device for inspecting the fuel of aviation kerosene storage tanks is inconvenient for later maintenance and repair, the present application proposes a novel sampling and joint device for inspecting the fuel of aviation kerosene storage tanks.

[0023] The sampling joint device of the present application includes a joint pipe component 10 , a flange component 20 and a sampling component 30 . The following three components and their structural relationship are described in detail: one end of the joint pipe component 10 is installed on the tank wall of the aviation kerosene storage tank, and the other end is connected to the sampling component 30 through the flange component 20; wherein the joint pipe component 10 includes a joint pipe 11, and the flange component 20 includes a flange body 21 and a flange cover 22, and the flange body 21 is fixedly connected to the joint pipe 11; in order to ensure reliable connection, one end of the joint pipe 11 can be fixedly welded to the opening of the tank wall of the aviation kerosene storage tank by welding, and the other end is also welded to the flange body 21; at the same time, the flange body 21 and the flange cover 22 are detachably connected together, for example, the flange body 21 and the flange cover 22 are connected together by bolting; the sampling component 30 includes three sampling tubes 31, the sampling tubes 31 are fixed to the flange cover 22 and extend into the joint pipe 11 (the sampling tubes 31 can also pass through the joint pipe 11), and then connected to the upper sampling hose, the middle sampling hose and the lower sampling hose arranged inside the aviation kerosene storage tank.

[0024] In this way, by fixing the sampling tube 31 of the sampling joint device on the flange cover 22, a detachable connection between the sampling tube 31 and the joint tube 11 is achieved, which is convenient for subsequent maintenance and repair.

[0025] The sampling tube 31 can be fixed to the flange cover 22 in an appropriate manner, for example, by being welded to the flange cover 22 through a butt-welding support 23 and extending into the connecting tube 11 .

[0026] In order to solve the problem of increased risk of oil leakage caused by a large number of openings in the wall of the aviation kerosene storage tank, preferably, the connecting pipe component 10 can be configured to include only one connecting pipe 11, and the three sampling tubes 31 are respectively fixed to the flange cover 22 through three butt-welded branch pipe stands 23 on the flange cover 22 and extend into the same connecting pipe 11 (similarly, the sampling tubes 31 can also pass through the connecting pipe 11), and then respectively connected to the upper sampling hose, the middle sampling hose and the lower sampling hose arranged inside the aviation kerosene storage tank.

[0027] Because the joining tube component 10 only includes one joining tube 11, only one hole needs to be opened on the tank wall of the jet fuel storage tank, that is, the number of openings on the original tank wall of the jet fuel storage tank is changed from "3" to "1", thereby greatly reducing the risk of fuel leakage caused by welding quality problems.

[0028] In order to facilitate the connection of the upper sampling hose, the middle sampling hose and the lower sampling hose inside the aviation fuel storage tank with the three sampling tubes 31 of the sampling component 30 inside the connecting tube 11, a certain gap needs to exist between the sampling tube 31 and the inner wall of the connecting tube 11.

[0029] When the sampling tube 31 is connected by extending into the interior of the connecting tube 11, in order to facilitate the connection of the sampling hose and the sampling tube 31 inside the connecting tube 11, in order to limit the outer diameter of the connecting tube 11 and further limit the size of the opening on the wall of the aviation fuel storage tank, so as to minimize the risk of fuel leakage caused by welding quality problems, the gap between the sampling tube 31 and the inner wall of the connecting tube 11 must be within a reasonable range. Practice has proved that this gap is 2cm-3cm.

[0030] Furthermore, in order to prevent the three sampling tubes 31 from rubbing and squeezing each other inside the joint tube 11, which affects the service life of the sampling tubes 31, a certain gap is required between the three sampling tubes 31 inside the joint tube 11. The size of the opening matches the outer diameter of the joint tube 11, preferably 4 to 7 times the outer diameter of the sampling tube 31, so that the sampling tubes 31 can be evenly distributed in the joint tube 11 with the required gap.

[0031] In order to facilitate the control of the entire process of fuel sampling, especially to facilitate the control of the amount of fuel sampling, further, three control valves 32 corresponding to the sampling tubes 31 can be set on the line where the sampled fuel flows out through the three sampling tubes 31; at the same time, a connecting flange 33 can be set between the control valve 32 and the sampling tube 31 to ensure a reliable connection between the two. Specifically, the control valve 32 can be a sampling ball valve, and the sampling ball valve and the connecting flange 33 are connected in a detachable manner, such as bolted connection.

[0032] On the basis of the aforementioned setting of the control valve 32, in line with the design principle of simplicity and high efficiency, two tees 34 and a sampling lead-out pipe 35 can be set on the line where the sampled fuel flows out through the three sampling tubes 31, wherein one sampling tube 31 is connected to the sampling lead-out pipe 35, and the other two sampling tubes 31 are respectively connected to the sampling lead-out pipe 35 through the connection of two tees 34; in this way, the fuel extracted through the three sampling tubes 31 and stored in different parts of the aviation kerosene storage tank all flows out through the same sampling lead-out pipe 35, but because of the control of the aforementioned control valve 32, the fuel taken from different storage parts can be effectively distinguished.

[0033] Furthermore, in order to ensure that the three sampling tubes 31 extending into the joining tube 11 through the butt-welded pipe supports 23 have equal gaps between each other, and also to facilitate the implementation of the manufacturing process, the three butt-welded pipe supports 23 can be designed to be evenly distributed on the flange cover 22.

[0034] In addition, the present application also provides an aviation fuel storage tank, which includes the sampling and coupling device described above.

[0035] Preferably, the jet fuel storage tank includes a tank body and an upper sampling hose, a middle sampling hose and a lower sampling hose arranged in the tank body. An opening is provided on the tank wall of the tank body, and the connecting pipe component 10 is sealingly connected to the opening. The three sampling tubes 31 of the sampling component 30 are respectively connected to the upper sampling hose, the middle sampling hose and the lower sampling hose in the tank body.

[0036] The following is combined Figure 1 , Figure 2 The working process of the sampling and coupling device for fuel inspection of aviation kerosene storage tanks according to the preferred embodiment of the present application is briefly explained as follows:

[0037] like Figure 1 , Figure 2As shown, the sampling joint device includes: a joint pipe component 10, which is only provided with one joint pipe 11; a flange component 20, including a flange body 21, a flange cover 22 and three butt-welded branch pipes 23 evenly distributed on the flange cover 22; a sampling component 30, including three sampling tubes 31, three control valves 32 corresponding to the three sampling tubes 31, multiple connecting flanges 33 for connecting the sampling tubes 31 and the control valves 32, two tees 34 and a sampling outlet pipe 35. Among them, the three sampling tubes 31 extend into the joint pipe 11 through the three butt-welded branch pipes 23 evenly distributed on the flange cover 22, and are respectively connected to the upper sampling hose, the middle sampling hose and the lower sampling hose provided inside the aviation kerosene storage tank, one sampling tube 31 is directly connected to the sampling outlet pipe 35, and the other two sampling tubes 31 are respectively connected to the sampling outlet pipe 35 through the transfer of two tees 34.

[0038] When it is necessary to inspect the fuel stored in the upper part of the aviation kerosene storage tank, open the control valve 32 corresponding to the sampling tube 31 connected to the upper sampling hose arranged inside the aviation kerosene storage tank, and close the control valves 32 of the other two sampling tubes 31 connected to the middle sampling hose and the lower sampling hose. In this way, the fuel stored in the upper part of the aviation kerosene storage tank is taken out through the upper sampling hose, the sampling tube 31 and the sampling lead-out tube 35. Similarly, when it is necessary to sample and inspect the fuel stored in the middle or lower part of the aviation kerosene storage tank, it is only necessary to open the corresponding control valve 32 and close the other two control valves 32 to complete the fuel sampling work in the corresponding parts.

[0039] According to the technical solution of the present application, by fixing the sampling tube of the sampling joint device on the flange cover, a detachable connection between the sampling tube and the joint tube is achieved, which is convenient for the later maintenance and overhaul of the sampling joint device; by providing only one joint tube on the tank wall of the aviation kerosene storage tank, the number of openings in the tank wall of the aviation kerosene storage tank is reduced, thereby reducing the risk of fuel leakage caused by welding quality problems.

[0040] The preferred embodiments of the present application are described in detail above; however, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, a variety of simple modifications can be made to the technical solution of the present application, and these simple modifications all fall within the protection scope of the present application.

[0041] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this application will not further describe various possible combinations.

[0042] In addition, the various implementation modes of the present application may be arbitrarily combined, and as long as they do not violate the concept of the present application, they should also be regarded as the contents disclosed in the present application.

Claims

1. A sampling and joining device for inspection of aviation kerosene storage tank fuel, characterized in that: The invention comprises a connecting pipe component (10), a flange component (20) and a sampling component (30), wherein one end of the connecting pipe component (10) is mounted on the tank wall of the aviation kerosene storage tank, and the other end is connected to the sampling component (30) through the flange component (20); the connecting pipe component (10) comprises a connecting pipe (11); the flange component (20) comprises a flange body (21) and a flange cover (22), the flange body (21) is fixedly connected to the connecting pipe (11), and the flange body (21) and the flange cover (22) are detachably connected together; the sampling component (30) comprises three sampling tubes (31), the sampling tubes (31) are fixed to the flange cover (22) and can extend into the connecting pipe (11) to be connected to an upper sampling hose, a middle sampling hose or a lower sampling hose inside the aviation kerosene storage tank.

2. The sampling and coupling device according to claim 1, characterized in that: The joint pipe component (10) comprises only one joint pipe (11), and the three sampling pipes (31) are respectively fixed to the flange cover (22) through three butt-welded pipe supports (23) arranged on the flange cover (22) and extend into the interior of the joint pipe (11) and are respectively connected to the upper sampling hose, the middle sampling hose and the lower sampling hose.

3. The sampling and coupling device according to claim 2, characterized in that: There is a gap between the sampling tube (31) and the inner wall of the connecting tube (11).

4. The sampling and coupling device according to claim 3, characterized in that: The gap is 2cm-3cm.

5. The sampling and coupling device according to claim 2, characterized in that: In the joint tube (11), there is a gap between the sampling tubes (31).

6. The sampling and coupling device according to claim 2, characterized in that: The sampling component (30) comprises three control valves (32) corresponding one to the sampling tubes (31), and the control valves (32) are connected to the sampling tubes (31) via flange connectors (33) of the sampling component (30).

7. The sampling and coupling device according to claim 6, characterized in that: The sampling component (30) comprises two tees (34) and a sampling outlet pipe (35), one sampling pipe (31) is connected to the sampling outlet pipe (35), and the other two sampling pipes (31) are respectively connected to the sampling outlet pipe (35) via the transition of the tees (34).

8. The sampling and coupling device according to any one of claims 2 to 7, characterized in that: The butt-welded pipe supports (23) are evenly distributed on the flange cover (22).

9. Aviation fuel storage tank, characterized in that: The aviation fuel storage tank comprises the sampling joint device according to any one of claims 1 to 8.

10. The aviation fuel storage tank according to claim 9, characterized in that: The aviation fuel storage tank comprises a storage tank body and an upper sampling hose, a middle sampling hose and a lower sampling hose arranged in the storage tank body. The tank wall of the storage tank body is provided with an opening, the connecting pipe component (10) is sealed and connected to the opening, and the three sampling tubes (31) are respectively connected to the upper sampling hose, the middle sampling hose and the lower sampling hose.

Images