Refueling device
By installing protective pipes and filling them with fine sand within the refueling device, and then fixing them with a cement powder layer, the problem of refueling pipeline damage caused by ground subsidence and lateral movement was solved, thus improving the reliability and safety of the device.
Patent Information
- Application Number
- CN202520555605.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-25
AI Technical Summary
In existing technologies, ground subsidence and lateral displacement can damage underground refueling pipelines, posing a safety hazard.
By installing a protective pipe over the oil supply pipeline and filling the space between the pipeline and the pipe wall with fine sand, which is then compacted with water, and by adding a first layer of cement powder around the perimeter for fixation and buffering, the cement powder layer is prevented from flowing into the pipeline, thus enhancing the pipeline's buffering reliability.
This improved the overall reliability of the refueling equipment, reduced the risk of damage to the fuel supply pipeline, and minimized safety hazards.
Smart Images
Figure CN223822007U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present disclosure relates to the field of aviation oil supply equipment, and in particular to a refueling device. BACKGROUND
[0002] Aviation fuel refers to some fuel varieties specially designed for aircraft. Aviation kerosene has appropriate density, high calorific value, good combustion performance, can burn rapidly, stably, continuously and completely, has small combustion area, and has less carbon deposition and is less prone to coking.
[0003] There are various aviation fuel filling methods, such as fixed-point ground well filling operation by constructing an airport apron pipeline refueling system, which has high stability and efficiency. Because the ground well pipeline refueling system has the characteristics of fast refueling speed, no limitation on refueling amount, convenient use, etc., it is more and more widely used in large airports. However, in the related art, because the refueling pipeline is buried in the ground, ground settlement and transverse movement may cause damage to the refueling pipeline. CONTENT OF THE UTILITY MODEL
[0004] Therefore, the present disclosure provides a refueling device, which has high overall reliability and can reduce the risk of damage to the oil supply pipeline, thereby reducing safety hazards.
[0005] Specifically, the present disclosure is implemented by the following technical solutions:
[0006] According to a first aspect of the embodiments of the present disclosure, a refueling device is provided, which includes a refueling plug, an oil supply pipeline, a protective pipeline, and a first cement stone powder layer. The refueling plug includes an oil inlet and an oil outlet in communication with the oil inlet. The oil supply pipeline is connected to the oil inlet. The protective pipeline is sleeved on the oil supply pipeline, and a pipe wall of the protective pipeline and a pipe wall of the oil supply pipeline form an accommodation space therebetween. The accommodation space is filled with fine sand and water to compact the accommodation space with the water. The first cement stone powder layer surrounds the protective pipeline, and the protective pipeline is clamped between the fine sand and the first cement stone powder layer.
[0007] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:
[0008] When the refueling device works, the oil supply pipeline delivers oil to the oil inlet of the refueling plug, and then the oil is delivered to the aircraft to be refueled through the oil outlet of the refueling plug. Since the refueling device is arranged on the ground, the settlement and transverse movement of the ground will exert a shearing force on the oil supply pipeline. By arranging the protective pipeline to be sleeved on the oil supply pipeline and forming a containing space between the wall of the protective pipeline and the wall of the oil supply pipeline and filling the containing space with fine sand, the fine sand can play a buffering role on the oil supply pipeline, reducing the shearing force on the oil supply pipeline. By arranging the first cement stone powder layer around the protective pipeline to fix the refueling device, and clamping the protective pipeline between the fine sand and the first cement stone powder layer, the first cement stone powder layer cannot flow to the fine sand under the blockage of the protective pipeline, ensuring that the fine sand is wrapped around the oil supply pipeline and improving the reliability of the fine sand in buffering the oil supply pipeline. At the same time, the first cement stone powder layer is prevented from flowing around the oil supply pipeline, which would cause the first cement stone powder layer to cover the oil supply pipeline and cause damage to the oil supply pipeline. Thus, the overall reliability of the refueling device is improved, and the risk of damage to the oil supply pipeline is reduced, thereby reducing the safety hazard.
[0009] The technical solutions of the present disclosure are further described below:
[0010] In one of the embodiments, the protective pipeline comprises a corrugated pipe.
[0011] In one of the embodiments, the refueling device further comprises a concrete layer, the concrete layer is arranged in a stacked manner along the thickness direction of the first cement stone powder layer and is located above the first cement stone powder layer.
[0012] In one of the embodiments, the refueling device further comprises a second cement stone powder layer, the second cement stone powder layer is arranged in a stacked manner along the thickness direction of the first cement stone powder layer and is located above the concrete layer.
[0013] In one of the embodiments, the refueling device further comprises a well shaft and a well cover, the well shaft is provided with a containing cavity, and the well cover is movably connected with the well shaft to open or close the containing cavity. The refueling plug is arranged in the containing cavity.
[0014] In one of the embodiments, the well shaft is further provided with a through opening in communication with the containing cavity, and part of the refueling plug passes through the through opening to connect the oil inlet with the oil supply pipeline.
[0015] In one of the embodiments, the oil supply pipeline and the oil inlet are welded and fixed.
[0016] In one of the embodiments, the well shaft comprises an inner cylinder wall and an outer cylinder wall sleeved on the inner cylinder wall, and a buffer space is formed between the inner cylinder wall and the outer cylinder wall.
[0017] In one of the embodiments, the oiling device further comprises a sealing member and a concrete layer arranged in a stack with the first layer of cement powder, the sealing member being arranged between the wellbore and the concrete layer and abutting the inner cylinder wall and the outer cylinder wall respectively to separate the buffer space from the concrete layer.
[0018] In one of the embodiments, the oiling device further comprises a cutoff valve arranged in the oiling plug, the cutoff valve being capable of cutting off the oil inlet from the oil outlet.
[0019] It should be understood that the general description above and the detailed description below are only exemplary and explanatory, and are not intended to limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS
[0020] The accompanying drawings, which constitute a part of this disclosure, are intended to provide further understanding of the present disclosure, and the illustrative embodiments thereof and their description serve to explain the present disclosure, and do not constitute improper limitations on the present disclosure.
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can also be obtained by those skilled in the art without any creative effort based on these drawings.
[0022] Figure 1 Structure schematic view of the oiling device shown in one of the embodiments.
[0023] Figure 2 Structure schematic view of the oiling device shown in another embodiment.
[0024] Figure 3 Structure schematic view of the oiling device shown in another embodiment. Figure 2 Enlarged structure schematic view of the oiling device shown in one of the embodiments.
[0025] Figure 4 Enlarged structure schematic view of the oiling device shown in another embodiment. Figure 3 Enlarged structure schematic view of the oiling device shown in another embodiment.
[0026] Explanation of reference signs.
[0027] 100, oiling device; 110, oiling plug; 111, oil inlet; 112, oil outlet; 120, oil supply pipeline; 130, protection pipeline; 131, corrugated pipe; 140, first layer of cement powder; 150, concrete layer; 160, second layer of cement powder; 170, wellbore; 171, accommodating cavity; 172, through opening; 173, inner cylinder wall; 174, outer cylinder wall; 175, buffer space; 180, well cover; 190, sealing member; 191, gasket; 192, diaphragm; 101, accommodating space; 102, fine sand; 103, cutoff valve. Detailed Implementation
[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. In the following description relating to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements.
[0029] It should be understood that although the terms first, second, third, etc., may be used in this disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this disclosure, first information may also be referred to as second information, and similarly, second information may also be referred to as first information.
[0030] Aviation fuel refers to fuels specifically designed for aircraft. Aviation kerosene has suitable density, high calorific value, and excellent combustion performance, enabling rapid, stable, continuous, and complete combustion with a small combustion zone, low carbon buildup, and minimal coking. Aviation fuel also exhibits good low-temperature fluidity, meeting the fluidity requirements of high-altitude flight; it is highly clean, free of mechanical impurities and harmful substances such as water; and has a low sulfur content, especially mercaptan sulfur content, minimizing corrosion to engine parts.
[0031] There are various methods for refueling aviation fuel, such as using an airport apron pipeline refueling system to achieve fixed-point well refueling operations, which offers high stability and efficiency. Because of its fast refueling speed, lack of volume limitations, and ease of use, this type of well refueling pipeline is increasingly widely used in large airports. However, in this technology, since the refueling pipeline is buried underground, ground subsidence and lateral movement can damage the pipeline.
[0032] Based on this, the present disclosure provides a refueling device with high overall reliability, which can reduce the risk of damage to the oil supply pipeline and thus reduce safety hazards.
[0033] like Figure 1 as well as Figure 2 As shown, in some embodiments, the refueling device 100 includes a refueling plug 110, a fuel supply pipe 120, a protective pipe 130, and a first cement powder layer 140. The refueling plug 110 includes an inlet 111 and an outlet 112 connected to the inlet 111. The fuel supply pipe 120 is connected to the inlet 111. The protective pipe 130 is sleeved on the fuel supply pipe 120, and a receiving space 101 is formed between the pipe wall of the protective pipe 130 and the pipe wall of the fuel supply pipe 120. The receiving space 101 is filled with fine sand 102 and water to compact the receiving space 101. The first cement powder layer 140 surrounds the protective pipe 130, and the protective pipe 130 is sandwiched between the fine sand 102 and the first cement powder layer 140.
[0034] When the refueling device 100 is working, the oil supply pipeline 120 delivers oil to the oil inlet 111 of the refueling plug 110, and then the oil is delivered to the aircraft to be refueled through the oil outlet 112 of the refueling plug 110. Since the refueling device 100 is arranged on the ground, the settlement and lateral movement of the ground will exert a shearing force on the oil supply pipeline 120. By arranging the protective pipeline 130 to be sleeved on the oil supply pipeline 120, and forming an accommodating space 101 between the wall of the protective pipeline 130 and the wall of the oil supply pipeline 120 and filling the fine sand 102 in the accommodating space 101, the fine sand 102 can buffer the oil supply pipeline 120 and reduce the shearing force on the oil supply pipeline 120. By arranging the first cement stone powder layer 140 around the protective pipeline 130 to fix the refueling device 100, and clamping the protective pipeline 130 between the fine sand 102 and the first cement stone powder layer 140, the first cement stone powder layer 140 cannot flow to the fine sand 102 under the blockage of the protective pipeline 130, so as to ensure that the fine sand 102 is wrapped around the oil supply pipeline 120 and improve the reliability of the fine sand 102 in buffering the oil supply pipeline 120. At the same time, the first cement stone powder layer 140 is prevented from flowing around the oil supply pipeline 120 and covering the oil supply pipeline 120 to cause damage to the oil supply pipeline 120. Thus, the overall reliability of the refueling device 100 is improved, and the risk of damage to the oil supply pipeline 120 is reduced to reduce the safety hazard.
[0035] As can be understood, when the ground settles and moves laterally, the oil supply pipeline 120 located under the ground is easily subjected to a large shearing stress, especially when the refueling device 100 is poured with the ground, the shearing stress on the oil supply pipeline 120 is larger, which easily causes the oil supply pipeline 120 to be subjected to excessive shearing stress and crack, and then causes oil leakage and safety hazard.
[0036] It should be noted that the specific implementation of the material of the oil supply pipeline 120 can be various, including steel pipe and the like.
[0037] It should be noted that one end of the oil supply pipeline 120 is connected to the pump shed of the airport oil depot, and the other end is connected to the refueling plug 110, so that the aviation oil in the airport oil depot is delivered to the refueling plug through the oil supply pipeline 120.
[0038] It should be noted that the first cement stone powder layer 140, i.e. slag powder or cement-based material, is a fine powder-like substance obtained by crushing and grinding natural stone or industrial waste.
[0039] It should be noted that the fine sand 102 is a kind of sand with small particle diameter, i.e. sand with a particle size range of 0.075 mm to 0.5 mm.
[0040] As Figure 2As shown, in some embodiments, the protective conduit 130 includes a corrugated pipe 131. Thus, the corrugated pipe 131 is fitted onto the oil supply conduit 120, and the accommodating space 101 between the oil supply conduit 120 and the corrugated pipe 131 is filled with fine sand 102. Because the surface of the corrugated pipe 131 is uneven, it can increase the buffer area, thereby further enhancing the buffering effect of the fine sand 102 on the oil supply conduit 120 and further reducing the risk of damage to the oil supply conduit 120.
[0041] like Figure 1 as well as Figure 2 As shown, in some embodiments, the refueling device 100 further includes a concrete layer 150, which is stacked on top of the first cement powder layer 140 along the thickness direction of the first cement powder layer 140, and the concrete layer 150 is located above the first cement powder layer 140. Thus, by pouring the concrete layer 150 along the thickness direction of the first cement powder layer 140, the concrete layer 150 is stacked on top of the first cement powder layer 140, and the concrete layer 150 is located above the first cement powder layer 140, thereby fixing the refueling device 100.
[0042] It should be noted that the thickness direction of the first cement powder layer 140 is... Figure 2 The Z direction is shown.
[0043] It should be noted that concrete layer 150 is a composite material made of cement, aggregates (such as sand and gravel), water, and possible admixtures.
[0044] like Figure 1 as well as Figure 2 As shown, in some embodiments, the refueling device 100 further includes a second cement powder layer 160, which is stacked on top of the concrete layer 150 along the thickness direction of the first cement powder layer 140, and the second cement powder layer 160 is located above the concrete layer 150. Thus, by adding a second cement powder layer 160 along the thickness direction of the first cement powder layer 140 on top of the poured concrete layer 150, the refueling device 100 is further secured.
[0045] It should be noted that the second cement stone powder layer 160, also known as slag powder or cement-based material, is a fine powdery substance obtained by crushing and grinding natural stone or industrial waste.
[0046] like Figure 1 as well as Figure 2As shown, in some embodiments, the refueling device 100 further includes a well shaft 170 and a well cover 180. The well shaft 170 has a receiving cavity 171, and the well cover 180 is movably connected to the well shaft 170 to open or close the receiving cavity 171. A refueling plug 110 is disposed within the receiving cavity 171. Thus, by using the movable connection between the well cover 180 and the well shaft 170 to close the receiving cavity 171 and to place the refueling plug 110 within the receiving cavity 171, the well cover 180 and the well shaft 170 provide protection for the refueling plug 110. When refueling is required using the refueling plug 110, the well cover 180 is opened for refueling. This method is simple to operate and easy to implement.
[0047] like Figure 1 to Figure 3 As shown, in some embodiments, the wellbore 170 is further provided with a port 172 communicating with the receiving cavity 171, and a portion of the filler plug 110 passes through the port 172 to connect the oil inlet 111 to the oil supply pipeline 120. Thus, by passing a portion of the filler plug 110 through the port 172, the oil inlet 111 is connected to the oil supply pipeline 120 within the receiving space 101, enabling the oil supply pipeline 120 to deliver oil to the filler plug 110.
[0048] In some embodiments, the oil supply pipe 120 is welded to the oil inlet 111. Since oil is transported within the oil supply pipe 120, the connection between the oil supply pipe 120 and the oil inlet 111 needs to be sealed. By welding the oil supply pipe 120 to the oil inlet 111, the sealing of the connection can be ensured, preventing oil leakage and reducing safety hazards.
[0049] Researchers discovered in field practice that during prolonged periods of high summer temperatures, the ground and drainage grates experience significant thermal expansion. Due to the difference in thermal expansion coefficients between the ground and the drainage ditch, the shear force exerted on the oil supply pipeline 120 by lateral ground displacement is particularly pronounced. For example... Figure 2 as well as Figure 3 As shown, in some embodiments, the wellbore 170 includes an inner cylinder wall 173 and an outer cylinder wall 174 sleeved on the inner cylinder wall 173, with a buffer space 175 formed between the inner cylinder wall 173 and the outer cylinder wall 174. Thus, when the ground shifts laterally, the inner cylinder wall 173 and the outer cylinder wall 174 can move towards the buffer space 175 under force, thereby buffering the refueling device 100, reducing the shear force on the oil supply pipeline 120, reducing the risk of damage to the oil supply pipeline 120, and lowering safety hazards.
[0050] like Figure 1 to Figure 3As shown, in some embodiments, the refueling device 100 further includes a sealing element 190, which is sandwiched between the well shaft 170 and the concrete layer 150, and abuts against the inner cylinder wall 173 and the outer cylinder wall 174 respectively, to isolate the buffer space 175 from the concrete layer 150. Thus, by sandwiching the sealing element 190 between the well shaft 170 and the concrete layer 150, and abutting against the inner cylinder wall 173 and the outer cylinder wall 174 respectively, the sealing element 190 isolates the buffer space 175 from the concrete layer 150, preventing concrete from entering the buffer space 175 and thus preventing the inner cylinder wall 173 and the outer cylinder wall 174 from moving into the buffer space 175, thereby reducing safety hazards.
[0051] like Figure 4 As shown, in some embodiments, the seal 190 includes a gasket 191 and a diaphragm 192 abutting against the gasket 191. The gasket 191 is sandwiched between the well shaft 170 and the diaphragm 192, and the gasket 191 abuts against the inner cylinder wall 173 and the outer cylinder wall 174 respectively to seal the buffer space 175. The diaphragm 192 is sandwiched between the gasket 191 and the concrete layer 150. In this way, the diaphragm 192 and the gasket 191 isolate the buffer space 175 from the concrete layer 150, preventing concrete from entering the buffer space 175 and thus preventing the inner cylinder wall 173 and the outer cylinder wall 174 from moving into the buffer space 175, thereby reducing safety hazards.
[0052] It should be noted that there are various ways to make gasket 191, including silicone, rubber, and PVC (polyvinyl chloride), etc.
[0053] like Figure 1 to Figure 3 As shown, in some embodiments, the refueling device 100 further includes an isolation valve 103, which is disposed at the refueling plug 110 and can isolate the fuel inlet 111 from the fuel outlet 112. Thus, the isolation valve 103 can be used to quickly cut off the fuel supply in an emergency, preventing fuel leaks and potential safety accidents, thereby improving the safety of the refueling device 100.
[0054] It should be noted that there are various ways to implement the isolation valve 103, including but not limited to electric isolation valve 103, pneumatic isolation valve 103 and hydraulic isolation valve 103, etc.
[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0056] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.
Claims
1. A refueling device, characterized in that, The refueling device, installed on the ground, includes: A fuel filler plug includes a fuel inlet and a fuel outlet connected to the fuel inlet; An oil supply pipeline is connected to the oil inlet; A protective pipe is fitted over the oil supply pipe, and a space is formed between the wall of the protective pipe and the wall of the oil supply pipe. This space is filled with fine sand and water, which is used to compact the space. A first cement powder layer surrounds the protective pipe, and the protective pipe is sandwiched between the fine sand and the first cement powder layer.
2. The refueling device according to claim 1, characterized in that, The protective pipeline includes a corrugated pipe.
3. The refueling device according to claim 1, characterized in that, The refueling device further includes a concrete layer, which is stacked on top of the first cement powder layer along the thickness direction of the first cement powder layer, and the concrete layer is located above the first cement powder layer.
4. The refueling device according to claim 3, characterized in that, The refueling device further includes a second cement powder layer, which is stacked on top of the concrete layer along the thickness direction of the first cement powder layer, and the second cement powder layer is located above the concrete layer.
5. The refueling device according to claim 1, characterized in that, The refueling device also includes a well casing and a well cover. The well casing has a receiving cavity, and the well cover is movably connected to the well casing to open or close the receiving cavity. The refueling plug is located in the receiving cavity.
6. The refueling device according to claim 5, characterized in that, The wellbore is also provided with an opening that communicates with the receiving cavity, and part of the oil filling plug passes through the opening to connect the oil inlet to the oil supply pipeline.
7. The refueling device according to claim 6, characterized in that, The oil supply pipe is welded and fixed to the oil inlet.
8. The refueling device according to claim 5, characterized in that, The wellbore includes an inner cylinder wall and an outer cylinder wall sleeved on the inner cylinder wall, with a buffer space formed between the inner cylinder wall and the outer cylinder wall.
9. The refueling device according to claim 8, characterized in that, The refueling device also includes a sealing element and a concrete layer stacked with the first cement powder layer. The sealing element is sandwiched between the well shaft and the concrete layer and abuts against the inner cylinder wall and the outer cylinder wall respectively to separate the buffer space from the concrete layer.
10. The refueling device according to any one of claims 1 to 9, characterized in that, The refueling device also includes an isolation valve, which is disposed on the refueling plug and can isolate the oil inlet from the oil outlet.