Oil sampling device

Abstract

The utility model relates to an oil sampling device, belongs to the technical field of aircraft oil tank maintenance, and solves the problem that oil splashing is difficult to control when a precipitation valve is opened in the prior art. The oil collecting device comprises an ejector rod (1), a rubber mat (2), an oil collecting box (3) and a flow guide pipe (4), and the ejector rod (1) is detachably connected with a central column of the oil collecting box (3); the rubber mat (2) is bonded to the upper end face of the periphery of the oil collecting box (3) in a vulcanized mode. And the bottom of the oil collecting box (3) is fixedly connected with the top of the flow guide pipe (4). The disassembly and assembly processes of all the parts are easy to implement, the device can be matched with a spring type sediment discharging valve, the application range is wide, and the convenience of fuel oil discharging work of an airplane can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aircraft oil tank maintenance, in particular to an oil sampling device. Background Art

[0002] Aircraft that use fuel oil as fuel are equipped with various forms of fuel tanks. Most aircraft have a procedure for taking fuel samples (draining a small amount of oil) before flight. When the aircraft undergoes partial maintenance, the fuel in the fuel tank usually needs to be completely drained to avoid the risk of possible explosion. Therefore, most fuel tanks are equipped with a sedimentation valve at the bottom. This type of sedimentation valve is mostly sealed by spring force. There is a movable core rod at the bottom of the valve body. After the core rod is lifted up with a push rod-like tool, the drain channel opens and the oil flows out. However, when this type of sedimentation valve is opened, maintenance personnel are required to keep the force applied. It is difficult to control the oil when it sprays out of the valve body. The splashing range covers the operator, making it inconvenient to collect oil samples and there are certain safety hazards, which limits the improvement of aircraft maintainability. Utility Model Content

[0003] In view of the above analysis, the embodiment of the utility model aims to provide an oil sampling device to solve the problem that the oil splashing is difficult to control when the existing sedimentation valve is opened.

[0004] On the one hand, the utility model provides an oil sampling device, including a push rod, a rubber pad, an oil collecting box and a guide tube, wherein the push rod is detachably connected to the central column of the oil collecting box; the rubber pad is vulcanized and bonded to the upper end surface of the outer periphery of the oil collecting box; the bottom of the oil collecting box is fixedly connected to the top of the guide tube.

[0005] Furthermore, the push rod includes an upper section, a middle section, and a lower section; wherein the upper section can be inserted into the bottom hole of the sedimentation valve of the oil tank, the lower section has an external thread, and the diameter of the middle section is greater than the diameter of the lower section.

[0006] Furthermore, the upper section of the mandrel has multiple sizes.

[0007] Furthermore, the rubber pad is a ring-shaped piece made of HNBR material.

[0008] Furthermore, the oil collecting box is cup-shaped, and the diameter of the cup mouth is larger than the diameter of the oil outlet hole of the sedimentation valve at the bottom of the oil tank.

[0009] Furthermore, a central column protrudes upward from the center of the bottom of the oil collecting box, and a screw hole is arranged at the top of the central column.

[0010] Furthermore, a through hole is provided at the bottom of the oil collecting box.

[0011] Furthermore, the flow guide tube includes a funnel portion and a straight tube portion, and the straight tube portion is arranged at the bottom of the funnel portion.

[0012] Furthermore, the upper end surface of the funnel portion is fixedly connected to the lower end surface of the oil collecting box, and the bottom of the straight tube portion is provided with an internal thread.

[0013] Furthermore, it also includes a sampling cup, which has a cup mouth and a cup body, and the cup mouth is provided with an external thread.

[0014] Furthermore, the sampling cup is made of a transparent material, and a scale is arranged on the outer surface of the cup body.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] (1) The push rod and the oil collecting box are designed to be separated. By replacing push rods of different specifications, the adaptation requirements of different types of sedimentation valves can be met.

[0017] (2) The cavity structure of the oil collecting box can prevent the fuel from splashing around, and the center column connected to the top rod in the middle can play a good role in guiding the flow.

[0018] (3) The rubber pad can improve the fit between the oil collecting box and the wall of the oil tank, and the flexible structure helps to prevent the metal structure from damaging the surface of the oil tank.

[0019] (4) The straight tube portion of the guide tube is easy to grasp, and the funnel portion on it prevents it from slipping even if it is contaminated by oil.

[0020] (5) The sampling cup is made of transparent material and has scales on the surface, which makes it easy to observe the oil collection status.

[0021] (6) The sampling cup and the guide tube are designed to be separated. Large flow oil discharge can be performed without installing the sampling cup. Sampling cups of different volume specifications can be replaced according to different sampling volume requirements.

[0022] The disassembly and assembly process of all parts of the utility model is easy to implement, and the utility model can be adapted to most spring-type sediment discharge valves, has a wide application range, and can greatly improve the convenience of aircraft fuel discharge work.

[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained through the contents specifically pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. In the entire drawings, the same reference symbols represent the same components.

[0025] Figure 1 It is a structural schematic diagram of a specific embodiment;

[0026] Figure 2 is a cross-sectional view of a specific embodiment;

[0027] Figure 3 An exploded view of a specific embodiment;

[0028] Figure 4 It is a top view of the oil collecting box of a specific embodiment.

[0029] Reference numerals:

[0030] 1- push rod; 2- rubber pad; 3- oil collection box; 4- liquid guide tube; 5- sampling cup. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0032] Example 1

[0033] The utility model aims to provide a novel oil sampling device, which assists the oil tank to discharge the sedimentation valve, is suitable for large-scale oil discharge and small-scale sampling, and can avoid oil splashing to pollute the site and affect personnel safety.

[0034] See also Figure 1-Figure 3 The utility model discloses an oil sampling device, which comprises a push rod 1, a rubber pad 2, an oil collecting box 3, a flow guide tube 4 and a sampling cup 5.

[0035] The push rod 1 is a columnar body, which is divided into three parts: an upper section, a middle section, and a lower section. The upper section is used to be inserted into the bottom hole of the sedimentation valve of the oil tank, and the lower section has an external thread for fixed connection with the central column of the oil collecting box 3. The diameter of the middle section is larger than that of the lower section, which is convenient for locating the axial position of the push rod 1. The upper section of the push rod 1 can have multiple sizes to be suitable for different types of sedimentation valves.

[0036] The rubber pad 2 is an annular member made of HNBR material. The rubber pad 2 is vulcanized and bonded to the upper end surface of the oil collecting box 3. When in use, it is close to the bottom of the oil tank to play a sealing role and prevent oil from splashing.

[0037] The oil collecting box 3 is cup-shaped, and the diameter of the cup mouth is larger than the diameter of the oil outlet hole of the sedimentation valve at the bottom of the oil tank. A central column protrudes upward from the center of the bottom, and a screw hole is provided at the top of the central column, which is suitable for engaging the lower section of the push rod 1. After the push rod 1 is tightened with the central column, the top of the push rod 1 protrudes a distance from the upper surface of the rubber pad 2 on the oil collecting box 3.

[0038] See also Figure 4 The bottom of the oil collecting box 3 is provided with a plurality of through holes for oil to pass through. Preferably, three through holes are provided, and the shape of the through holes is fan-shaped and the circumference is evenly distributed at the bottom of the oil collecting box 3.

[0039] The flow guide tube 4 includes a funnel portion and a straight tube portion. The straight tube portion is arranged at the bottom of the funnel portion, and the two are fixedly connected or integrally formed.

[0040] The upper end surface of the funnel part is coaxially welded with the lower end surface of the oil collecting box 3, or connected together by other conventional fixed connection methods. The bottom of the straight tube part is provided with an internal thread for connecting with the sampling cup 5 or a hose or other containers.

[0041] The sampling cup 5 has a cup mouth and a cup body, the cup mouth is provided with an external thread, and the cup body is a receiving cavity for receiving the oil taken out. The sampling cup 5 is made of transparent resin, and a scale is provided on the outer surface of the cup body for displaying the amount of oil in the sampling cup 5. The sampling cup 5 is provided with a variety of specifications to meet different sampling requirements.

[0042] Except for the rubber pad 2 and the sampling cup 5, the materials of other parts are all 304 stainless steel.

[0043] Furthermore, the oil collecting box 3 and the liquid guiding tube 4 are connected Figure 1 The welding is a whole, and the weld is polished smooth without any defects such as sand holes and pores that affect the sealing and strength. The upper part of the oil collecting box 3 is vulcanized and bonded with a rubber pad 2, and the thickness of the rubber pad 2 is not less than 1.5mm. The push rod 1 and the sampling cup 5 are available in multiple specifications, and are connected to the oil collecting box 3 and the liquid guide tube 4 through threaded connections according to actual needs.

[0044] The oil flowing out of the bottom of the sedimentation valve will adhere to the surface of the central column and continue to flow downward to prevent splashing, so that the push rod 1 and the central column in the middle of the oil collecting box 3 can play a role in drainage. The through hole at the bottom of the oil collecting box 3 and the funnel-shaped structure of the liquid guide tube 4 together provide a flow channel for the fuel.

[0045] All parts of the utility model are made of materials resistant to gasoline, kerosene and water.

[0046] When a small amount of fuel is sampled using an oil sampling device of the utility model, a sampling cup 5 of appropriate volume needs to be selected and connected to the bottom of the liquid guide tube 4, and a push rod 1 that matches the bottom hole diameter of the sedimentation valve of the fuel tank is selected, and the push rod 1 is fixedly connected to the oil collecting box 3. Grasp the middle of the liquid guide tube 4 with your hand, align the push rod 1 with the bottom hole of the sedimentation valve and push it up until the rubber pad 2 on the upper part of the oil collecting box 3 fits the bottom of the fuel tank or the rate of oil outflow meets the requirements. At this time, the push rod 1 has opened the oil discharge passage of the sedimentation valve, and the oil flows out from the bottom hole of the valve body, and enters the liquid guide tube 4 through the central column in the middle of the oil collecting box 3, and finally flows into the sampling cup 5. The amount of oil can be observed through the scale on the sampling cup. When the sampling is completed, the upward force is removed by the hand, and the oil stops flowing out. Unscrew the sampling cup 5 from the liquid guide tube 4, and it can be placed for inspection or sent for component detection.

[0047] When discharging a large amount of fuel, the bottom of the liquid guide tube 4 of the present invention does not need to be connected to the sampling cup 5, but is connected to a hose of suitable specifications or the container is directly placed below, and the other operation processes are consistent with the sampling of a small amount of fuel.

[0048] The beneficial effects of this application are:

[0049] The straight tube portion of the flow guide tube 4 is easy to grasp, and the funnel portion thereon prevents it from slipping even if it is contaminated by oil.

[0050] The cavity structure of the oil collecting box 3 can prevent the fuel from splashing around, and the central column connected to the top rod 1 in the middle can play a good role in guiding the flow.

[0051] The rubber pad 2 can improve the fit between the oil collecting box 3 and the wall of the oil tank, and the flexible structure is helpful to prevent the metal structure from damaging the surface of the oil tank.

[0052] The sampling cup 5 is made of a transparent material and has scales marked on its surface, so that the oil collection status can be easily observed.

[0053] The push rod 1 and the oil collecting box 3 adopt a separate design, and the adaptation requirements of different types of sedimentation valves can be met by replacing the push rods 1 with different specifications.

[0054] The sampling cup 5 and the guide tube 4 are designed to be separated. Large-flow oil discharge can be performed without installing the sampling cup 5. The sampling cup 5 of different volume specifications can be replaced according to different requirements of the sampling amount.

[0055] The disassembly and assembly process of all parts of the utility model is easy to implement, and the utility model can be adapted to most spring-type sediment discharge valves, has a wide application range, and can greatly improve the convenience of aircraft fuel discharge work.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. An oil sampling device, characterized in that: The invention comprises a push rod (1), a rubber pad (2), an oil collecting box (3) and a flow guide tube (4), wherein the push rod (1) is detachably connected to the central column of the oil collecting box (3); the rubber pad (2) is vulcanized and bonded to the upper end surface of the outer peripheral portion of the oil collecting box (3); and the bottom of the oil collecting box (3) is fixedly connected to the top of the flow guide tube (4).

2. The oil sampling device according to claim 1, characterized in that: The push rod (1) comprises an upper section, a middle section and a lower section; wherein the upper section can be inserted into the bottom hole of the sedimentation valve of the oil tank, the lower section has an external thread, and the diameter of the middle section is greater than the diameter of the lower section.

3. The oil sampling device according to claim 1, characterized in that: The rubber pad (2) is a ring-shaped part made of HNBR material.

4. The oil sampling device according to claim 1, characterized in that: The oil collecting box (3) is cup-shaped, and the diameter of the cup mouth is larger than the diameter of the oil outlet hole of the sedimentation valve at the bottom of the oil tank.

5. The oil sampling device according to claim 4, characterized in that: The central column protrudes upward from the bottom center of the oil collecting box (3), and a screw hole is arranged at the top end of the central column.

6. The oil sampling device according to claim 5, characterized in that: The bottom of the oil collecting box (3) is provided with a through hole.

7. The oil sampling device according to claim 1, characterized in that: The flow guide tube (4) comprises a funnel portion and a straight tube portion, wherein the straight tube portion is arranged at the bottom of the funnel portion.

8. The oil sampling device according to claim 7, characterized in that: The upper end surface of the funnel portion is fixedly connected to the lower end surface of the oil collecting box (3), and the bottom of the straight tube portion is provided with an internal thread.

9. The oil sampling device according to claim 8, characterized in that: It also comprises a sampling cup (5), wherein the sampling cup (5) comprises a cup mouth and a cup body, and the cup mouth is provided with an external thread.

10. The oil sampling device according to claim 9, characterized in that: The sampling cup (5) is made of a transparent material, and a scale is arranged on the outer surface of the cup body.

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