CN105501450B - Unmanned aerial vehicle composite material integral oil tank sealing method - Google Patents
Unmanned aerial vehicle composite material integral oil tank sealing method Download PDFInfo
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- CN105501450B CN105501450B CN201510853857.2A CN201510853857A CN105501450B CN 105501450 B CN105501450 B CN 105501450B CN 201510853857 A CN201510853857 A CN 201510853857A CN 105501450 B CN105501450 B CN 105501450B
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- sealant
- oil tank
- bolt holes
- framework
- sealing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/02—Tanks
- B64D37/06—Constructional adaptations thereof
Abstract
The invention relates to a sealing method of an integral fuel tank made of an unmanned aerial vehicle composite material, which comprises the following steps of 1) removing paint on a fuel tank framework, polishing and coating a sealant; 2) polishing the surface of the sealant after the telephone is fixed; 3) bonding a rubber plate on the sealing surface of the wall plate by using a rubber adhesive to form a composite plate; 4) punching bolt holes on the composite plate; 5) coating a layer of release agent on the rubber surface of the composite board; 6) coating a sealant on the oil tank framework; 7) aligning the composite plate with corresponding bolt holes of the framework and then connecting the composite plate with the corresponding bolt holes of the framework by bolts; after the bolts are screwed down, sealant can be extruded out of the joint of the composite plate and the oil tank framework, if no sealant flows out, the composite plate and the oil tank framework are disassembled, and the step 1 is repeated; 8) when the sealant is hardened, the sealant is disassembled, and the redundant sealant is cut off; 9) and removing the residual release agent on the sealing surface. The method for easily separating the composite board from the oil tank framework by coating the isolating agent layer on the bonding surface of the composite board can effectively solve the problem that the wallboard has the disassembly requirement.
Description
Technical Field
The invention belongs to the field of integral oil tank structure design, and particularly relates to a sealing method for an integral oil tank made of an unmanned aerial vehicle composite material.
Background
The fuel tank is used as an important part for storing fuel of an airplane, has high requirement on sealing performance, and the integral fuel tank has better sealing performance, so that the integral fuel tank is increasingly used by the airplane at present. The integral oil tank of present common aircraft is because of its bulky, and operating personnel can get into inside and be under construction, and the oil tank wallboard does not have the dismantlement requirement moreover, so convenient construction and sealed.
Because unmanned aerial vehicle is small and small, consequently unmanned aerial vehicle's oil tank also receives the restriction in space. The unmanned aerial vehicle oil tank needs to adopt overall structure, consequently can lead to the construction space in the oil tank narrow and small more, construction route nervous, and unmanned aerial vehicle covering and oil tank wallboard camber are complicated and have the dismantlement requirement moreover, are difficult to reach the sealed effect of ideal.
Disclosure of Invention
The invention aims to provide a sealing method for an integral fuel tank made of an unmanned aerial vehicle composite material, which solves the problems of difficult construction access, narrow construction space and difficult sealing of a bent skin panel with disassembly requirements of the existing integral fuel tank structure of the unmanned aerial vehicle.
In order to achieve the purpose, the invention adopts the technical scheme that: an unmanned aerial vehicle composite material integral oil tank sealing method comprises the steps of
Step one, removing paint on an oil tank framework, polishing, and coating the sunken and longitudinal and transverse butt joint parts with a sealant;
step two, polishing the surface of the cured sealant after the sealant is cured;
bonding a rubber plate on a sealing surface of the oil tank wall plate by using a sealant to form a composite plate;
fourthly, punching bolt holes in the composite plate, wherein the bolt holes in the composite plate and the bolt holes in the oil tank framework are matched;
fifthly, coating a layer of release agent on the rubber surface of the composite board;
sixthly, coating a sealing agent on the sealing surface of the oil tank framework;
step seven, oppositely arranging the rubber surface of the composite plate and the sealing surface of the oil tank framework, aligning bolt holes of the composite plate with bolt holes of the oil tank framework, penetrating bolts into one part of the bolt holes, and inserting pin shafts into the other part of the bolt holes;
step eight, screwing the bolts, and when any position around the joint of the composite plate and the oil tank framework is filled with the sealant, performing step ten; if not, carrying out the ninth step;
step nine, unscrewing the bolts, separating the rubber surface of the composite plate from the sealing surface of the oil tank framework, adding sealant again on the sealing surface of the oil tank framework at the position where the sealant does not flow out, and repeating the step eight;
step ten, disassembling and assembling after the hardness of the sealant reaches a preset degree, and cutting the extruded sealant along the sealing surface;
step eleven, removing the residual release agent on the sealing surface by using a cotton rag soaked with the solvent.
Further, the rubber plates in the step 3 are formed by butt joint, the butt joint mode adopts a Z shape, and the butt joint gap is smaller than 0.2 mm.
Further, the rubber sheet thickness is 1.5 mm.
And further, the seventh step is that the bolt arrangement mode of penetrating the composite plate into the bolt holes is that 1 group of bolts are installed every 3 bolt holes for assembly.
Further, the predetermined degree in the step ten means that the state of the sealant is between gel and solid.
Further, the method also comprises the step twelve: and sealing the butt joint of any adjacent oil tank wall plates by using a polytetrafluoroethylene sealing profile.
According to the sealing method of the unmanned aerial vehicle composite material integral oil tank, the rubber plate is adhered to the sealing surface of the wall plate to form the composite plate and the oil tank framework to be integrally installed, so that the problems that the oil tank is small in size, the construction passage is short and construction cannot be carried out are solved; and the method of coating a layer of isolating agent on the bonding surface of the composite board to enable the composite board to be easily separated from the oil tank framework can effectively solve the problem that the wallboard has the disassembly requirement.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
Fig. 1 is a schematic diagram illustrating bonding of a tank wall plate and a framework in a sealing method for an integral tank made of a composite material of an unmanned aerial vehicle according to an embodiment of the invention;
fig. 2 is a schematic view of a zigzag butting structure of rubber plates according to an embodiment of the invention.
Wherein 1 is a wallboard, 2 is a rubber plate, 3 is a release agent, 4 is a sealant, 5 is a framework, and 6 is a rubber plate.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are exemplary and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
As shown in fig. 1 and fig. 2, by adopting the sealing method of the composite material integral fuel tank of the unmanned aerial vehicle,
firstly, carrying out box framework treatment on oil:
1) and (5) removing paint and polishing on the oil tank framework. Coating the sunken and longitudinal and transverse butt joints with sealant;
2) polishing the surface of the cured sealant after the sealant is cured;
then, carrying out oil tank wall plate treatment:
3) bonding a rubber plate on the sealing surface of the wall plate by using a rubber adhesive to form a composite plate; the rubber plates can be whole plates or can be formed by butting all the rubber plates, the butting mode adopts a Z shape, and the butting gap is less than 0.2 mm. The thickness of the rubber sheet was 1.5 mm.
4) Punching bolt holes in the composite plate, wherein the bolt holes in the composite plate are matched with the bolt holes in the oil tank framework;
5) coating a layer of isolating agent on the rubber surface of the composite plate, so that the composite plate is easily separated from the oil tank framework, and the detachability of the oil tank is realized;
and finally, connecting and sealing the oil tank framework and the wall plate:
6) coating a sealant on the oil tank framework;
7) and oppositely arranging the rubber surface of the composite plate and the sealing surface of the oil tank framework, aligning the bolt holes of the composite plate with the bolt holes of the oil tank framework, penetrating bolts into one part of the bolt holes, and inserting pin shafts into the other part of the bolt holes. After the bolts are screwed down, sealant can be extruded out of the joint of the composite plate and the oil tank framework, if no sealant flows out, the composite plate and the oil tank framework are disassembled, and the step 1 is repeated.
When the bolt holes are threaded, 1 bolt hole is installed every 3 bolt holes to be assembled with the bolts, and special attention is paid to the fact that the sequence of connecting the bolts is evenly distributed on the wall plate. The sealant should be squeezed out at any position along the edge, and if no glue flows out, the sealant should be disassembled and glued again for installation. And other bolt holes are plugged by pins or bolts, so that no sealant is left in the bolt holes.
8) When the hardness of the sealant reaches a certain degree, disassembling and assembling, and cutting the extruded sealant along the sealing surface;
the sealant hardness should not be too hard or too soft, the sealant is too hard to cut through the extruded sealant, is time consuming and labor intensive, and may cut through the wall panels, and the sealant hardness is too soft to flow, at which time the sealant not only sticks to the cutter, but may also cause displacement of the aligned composite panels from the tank wall panels, and most preferably the sealant is in a state between gel and solid.
9) The residual release agent on the sealing surface was removed with a cotton rag soaked with solvent.
The connection between the framework of the detachable integral oil tank and the wall plate is completed, and finally, the butt joint of the adjacent wall plates is sealed by polytetrafluoroethylene sealing sectional materials.
According to the sealing method of the unmanned aerial vehicle composite material integral oil tank, the rubber plate is adhered to the sealing surface of the wall plate to form the composite plate and be integrally installed with the oil tank framework, so that the problems that the oil tank is small in size, the construction passage is short and construction cannot be carried out are solved; and the method of coating a layer of isolating agent on the bonding surface of the composite board to enable the composite board to be easily separated from the oil tank framework can effectively solve the problem that the wallboard has the disassembly requirement.
The above description is only for the best mode of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (5)
1. The sealing method of the integral fuel tank made of the composite material of the unmanned aerial vehicle is characterized by comprising the following steps of: comprises that
Step one, removing paint on an oil tank framework, polishing, and coating the sunken and longitudinal and transverse butt joint parts with a sealant;
step two, polishing the surface of the cured sealant after the sealant is cured;
bonding a rubber plate with a sealant on a sealing surface of the oil tank wall plate to form a composite plate, wherein the rubber plate is formed by butt joint in a Z-shaped mode, and a butt joint gap is smaller than 0.2 mm;
fourthly, punching bolt holes in the composite plate, wherein the bolt holes in the composite plate and the bolt holes in the oil tank framework are matched;
fifthly, coating a layer of release agent on the rubber surface of the composite board;
sixthly, coating a sealing agent on the sealing surface of the oil tank framework;
step seven, oppositely arranging the rubber surface of the composite plate and the sealing surface of the oil tank framework, aligning bolt holes of the composite plate with bolt holes of the oil tank framework, penetrating bolts into one part of the bolt holes, and inserting pin shafts into the other part of the bolt holes;
step eight, screwing the bolts, and when any position around the joint of the composite plate and the oil tank framework is filled with the sealant, performing step ten; if not, carrying out the ninth step;
step nine, unscrewing the bolts, separating the rubber surface of the composite plate from the sealing surface of the oil tank framework, adding sealant again on the sealing surface of the oil tank framework at the position where the sealant does not flow out, and repeating the step eight;
step ten, disassembling and assembling after the hardness of the sealant reaches a preset degree, and cutting the extruded sealant along the sealing surface;
step eleven, removing the residual release agent on the sealing surface by using a cotton rag soaked with the solvent.
2. The method of claim 1, wherein the rubber sheet is 1.5mm thick.
3. The method for sealing the integral fuel tank of the unmanned aerial vehicle composite material according to claim 1, wherein the bolt arrangement of the composite plate penetrating into the bolt holes in the seventh step is that 1 group of bolts are installed every 3 bolt holes for assembly.
4. The method of claim 1, wherein the predetermined degree is between gel and solid state.
5. The method for sealing an integral fuel tank of an unmanned aerial vehicle composite material according to claim 1, further comprising the step of twelve: and sealing the butt joint of any adjacent oil tank wall plates by using a polytetrafluoroethylene sealing profile.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510853857.2A CN105501450B (en) | 2015-11-30 | 2015-11-30 | Unmanned aerial vehicle composite material integral oil tank sealing method |
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| CN201510853857.2A CN105501450B (en) | 2015-11-30 | 2015-11-30 | Unmanned aerial vehicle composite material integral oil tank sealing method |
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| CN105501450A CN105501450A (en) | 2016-04-20 |
| CN105501450B true CN105501450B (en) | 2020-09-18 |
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| CN108146643B (en) * | 2016-12-06 | 2020-12-29 | 成都凯迪精工科技有限责任公司 | Manufacturing method of small oil tank suitable for large diving angle |
| CN112072335B (en) * | 2020-09-25 | 2022-06-24 | 中国直升机设计研究所 | Conductive structure between composite material structural members and conductive processing method |
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| US2401627A (en) * | 1941-05-16 | 1946-06-04 | Us Rubber Co | Puncture sealing gas tank |
| CN101982247A (en) * | 2010-11-15 | 2011-03-02 | 陕西飞机工业（集团）有限公司 | Method for sealing and preventing integral wing tank of large-medium transport from corrosion |
| US7900412B2 (en) * | 2003-12-23 | 2011-03-08 | Airbus Uk Limited | Sealing material |
| CN203335845U (en) * | 2013-06-27 | 2013-12-11 | 江西洪都航空工业集团有限责任公司 | Novel airplane oil tank sealing structure |
| CN104369857A (en) * | 2014-10-15 | 2015-02-25 | 中航飞机股份有限公司西安飞机分公司 | Whole oil tank structure of airplane |
| CN204688426U (en) * | 2015-05-28 | 2015-10-07 | 河南翱翔航空科技有限公司 | Wing tank |
| CN105102319A (en) * | 2013-03-26 | 2015-11-25 | 三菱重工业株式会社 | Fuel tank, main wings, aircraft fuselage, aircraft, and moving body |
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2015
- 2015-11-30 CN CN201510853857.2A patent/CN105501450B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2401627A (en) * | 1941-05-16 | 1946-06-04 | Us Rubber Co | Puncture sealing gas tank |
| US7900412B2 (en) * | 2003-12-23 | 2011-03-08 | Airbus Uk Limited | Sealing material |
| CN101982247A (en) * | 2010-11-15 | 2011-03-02 | 陕西飞机工业（集团）有限公司 | Method for sealing and preventing integral wing tank of large-medium transport from corrosion |
| CN105102319A (en) * | 2013-03-26 | 2015-11-25 | 三菱重工业株式会社 | Fuel tank, main wings, aircraft fuselage, aircraft, and moving body |
| CN203335845U (en) * | 2013-06-27 | 2013-12-11 | 江西洪都航空工业集团有限责任公司 | Novel airplane oil tank sealing structure |
| CN104369857A (en) * | 2014-10-15 | 2015-02-25 | 中航飞机股份有限公司西安飞机分公司 | Whole oil tank structure of airplane |
| CN204688426U (en) * | 2015-05-28 | 2015-10-07 | 河南翱翔航空科技有限公司 | Wing tank |
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