• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a method for cleaning the inside of a fuel tank (7) from a first inspection opening (4; 41) of said fuel tank (7) by means of a cleaning means (1) inserted into said tank for cleaning and purifying fuel. The method further comprises supplying pressurized air to the fuel tank (7) through its first or second inspection port (4; 41 or 4; 42), via a tubular air supply device, in the form of successive air pulses, each air pulse lasting 1-10 seconds, preferably 2-5 seconds and each the air pressure of the air pulse is 5 to 15 bar and preferably about 10 bar.
    公开号:FI20207084A1
    申请号:FI20207084
    申请日:2020-05-14
    公开日:2021-10-15
    发明作者:Harri Hvitsjö
    申请人:Hvitsjoe Harri；
    IPC主号:
    专利说明:

    The invention relates to a method according to the preamble of claim 1 for cleaning the inside of a fuel tank. The invention also relates to a fuel tank in connection with a vehicle, to which a cleaning means for cleaning the inside of the fuel tank can be fitted. Methods for cleaning a fuel tank are known in the art, in which fuel is recycled to the outside of the tank and microbial growth is removed from the fuel transferred outside the tank by filtration, and then the cleaned fuel is recycled back to the tank. The cleaning process is easily incomplete here, because the fuel tank often has bulkheads and other obstacles, which makes it difficult to clean the dirt left on the tank walls simply by recycling the fuel. In addition, the cleaning result can be difficult to verify due to the bulkheads in the - fuel tank and the location of the fuel connection. In another method, the fuel tank is removed from the vehicle to remove fuel and clean the internal surfaces of the fuel, but this method has the disadvantage of being slow. The invention is intended to eliminate or at least alleviate the problems encountered in the prior art described above. The main object of the invention is therefore to provide a method and a cleaning means available therein, with which it is possible to clean the fuel tank in situ so that the S cleaning result is good. O
    The method according to claim 1 and the cleaning means according to claim 11 achieve the above objects. More particularly, the invention relates to a method according to claim 1 for cleaning the inside of a fuel tank from a first inspection opening of said fuel tank by a cleaning means S inserted into said tank for refueling and purifying fuel. The method further comprises supplying pressurized air to the fuel tank through its first or second inspection port, through a tubular air supply device, in the form of successive air pulses, in which
    The compressed air pulses either consist of a continuous compressed air supply in which the air pressure varies between 1 and 15 bar or a discontinuous compressed air supply in which the air pressure during each compressed air pulse is 5 to 15 bar, preferably 10 bar and the compressed air pulse lasts 1 to 180 seconds, preferably 1 to 10 seconds.
    The invention also relates to a cleaning means for use in the method. The cleaning means comprises a cleaning unit comprising at least a tubular fuel supply unit and a tubular fuel discharge unit and a tubular air supply unit which can be fitted inside the fuel tank.
    The invention is based, firstly, on the fact that one or more inspection openings are made in situ in the fuel tank connected to the vehicle, i.e. without removing the fuel tank from the vehicle. This makes it easy to check the cleaning result of the fuel tank. Second, the invention is based on the fact that the fuel tank is cleaned with a cleaning means capable of circulating and purifying the fuel in the fuel tank to filter and remove microorganisms. In addition, the cleaning means includes an air supply device capable of producing short air pulses for cleaning the fuel tank. Preferably, the air supply device is adapted to provide compressed air pulses inside the fuel tank, wherein the duration of each pulse is 1 to 180 seconds, preferably 2 to 5 seconds, and the air pressure of each pulse is 5 to 15 bar and preferably about 10 bar. Successive compressed air pulses may also consist of a continuous supply of compressed air in which the air | the pressure varies between 1 -15 bar. In a preferred embodiment of the invention, the cleaning means 1 has a cleaning unit comprising at least a tubular fuel supply unit and a tubular fuel removal unit N which can be fitted inside the fuel tank, as well as an air supply unit. LO
    O + The invention and its advantages are described in more detail below with reference to the accompanying drawings.
    Fig. 1 A schematic longitudinal sectional view shows a cleaning unit of a cleaning device 2 according to the invention mounted on a fuel tank. OF
    Figure 2 also shows a schematic sectional view of a cleaning device according to the invention.
    Figure 3 schematically shows the cleaning unit 10.
    The cleaning means 1 has a cleaning unit 10 comprising at least a tubular fuel supply unit 30a and a tubular fuel discharge unit 30b which can be fitted inside the fuel tank 7, and a tubular air supply unit 35. The upper part of the cleaning unit is movable through the tubular body of the supply unit 30a, the exhaust unit 30b and the air supply unit 35 inserted through the opening. The stop 301 can be supported on the outer surface of the fuel tank 7. The inside of the fuel tank 7 attached to the vehicle is cleaned from the first inspection opening 4 of said fuel tank 7; The method 1 further comprises supplying pressurized air to the fuel tank 7 through its first or second inspection opening 4 by means of a cleaning means 1 with a fuel cleaning and recycling apparatus inserted into said tank; 41 or 4; 42, via a tubular air supply device, in the form of successive air pulses, in which the successive air pellets either consist of a continuous compressed air supply with an air pressure varying between 1 and 15 bar or a discontinuous pressure supply in which the air pressure is preferably 5 to 15 bar during each pulse. bar and the duration of the air pulse is 1 to 180 seconds, preferably 1 to 10 seconds.
    Only some embodiments of the invention as defined in the claims have been described in the above embodiments, and it will be apparent to one skilled in the art that the invention may be practiced in many other ways.
    O S 25 OF
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    Reference number list (main parts) Cleaning means 1 cleaning unit 10 —Air supply unit 2 air supply unit 35 without supply head 2a shut-off valve 21 Fuel recirculation system 3 recirculation unit 30 restrictor 301 flange 302 supply unit 31 supply unit 30a connector 301 outlet unit 30 outlet unit
    SS 20 flow meter 39 3 recirculation unit 30 = Inspection opening 4 E opening 40 3 first inspection opening 41 S 25 second inspection opening 42 - hatch 45 seal 45a metal plate 45b adapter 45c threaded rod 45e 5 Suction device 5 suction pipe 51 suction head 51a venturi unit 6 gas discharge unit bulkhead 71 inside 72 Power unit (aggregate) 8 power line 81.82 Compressor 9 distributor valve 91 Fuel D
    N N 20 Without I
    No. Compressed air pulse P1 s Aperture diameter T
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    PP I 25 O OF
    权利要求:
    Claims (15)
    [1]
    A method for cleaning the inside of a fuel tank (7) from a first inspection opening (4; 41) of said fuel tank (7) by a cleaning means (1) inserted into said tank for cleaning and purifying fuel, characterized in that the method further comprises supplying compressed air to the fuel tank (7) through its first or second inspection opening (4; 41 or 4; 42) via a tubular air supply device in the form of successive compressed air pulses in which successive compressed air pulses are formed by continuous compressed air , wherein the air pressure varies between 1 and 15 bar or from a discontinuous compressed air supply, in which the air pressure during each compressed air pulse is preferably 5 to 15 bar and the duration of the compressed air pulse is 1 to 180 seconds, preferably 1 to 10 seconds.
    [2]
    The method of claim 1, wherein the fuel tank is attached to the vehicle.
    [3]
    Method according to Claim 1, characterized in that at the same time as the fuel is recycled and cleaned by the cleaning means (1), the fuel tank (7) is degassed by a second inspection opening (4; 42) formed in the tank by a tubular suction device (5). through the fuel filler opening.
    [4]
    A method according to claim 3, characterized in that water is separated from the recyclable fuel (D) and microorganisms are filtered or otherwise removed before returning the fuel to the fuel tank.
    [5]
    Method according to Claim 1, characterized in that the first and / or second inspection opening (4; 41, 4; 42) is produced in situ without removing the S 25 fuel tank (7) from the vehicle. S
    [6]
    Method according to Claim 1, characterized in that the first inspection opening (4, 41) and the second inspection opening (4; 42) are located at the same or different location E in the fuel tank (7). 3
    [7]
    A method according to claim 1, characterized in that inside the fuel tank (7) there are two or more fuel tank parts (70) adjacent to the intermediate bulkhead (7) and to each part of the fuel tank (7) adjacent to the intermediate bulkhead. is a fluid communication through at least one first inspection port (4; 41), and the method includes
    -cleaning the inside of each fuel tank part (70) confined to the intermediate bulkhead (71) by inserting the cleaning means (1) inside said fuel tank part (70) through the first inspection opening (4; 41) and recirculating and cleaning the fuel and —feeding the pressurized air pulses comprising air inside each part (70) of the fuel tank (7) adjacent to the intermediate bulkhead (71) of the fuel tank through the inspection opening (4) or filling opening of the fuel tank (7), preferably 2 to 10 seconds for each air pulse -5 seconds and an air pressure of 5 to 15 bar and preferably about 10 bar for each air pulse.
    [8]
    Method according to one of the preceding claims, characterized in that it further comprises manufacturing the inspection opening (4) in situ by cutting or sawing the opening in the container (7) and installing a door (45) in this opening.
    [9]
    A method according to claim 8, characterized in that the method comprises providing an opening (40) made in situ with a hatch (45) for producing an inspection opening (4) with a threaded rod (45e) running transversely through the hatch (45). ) to which an adapter piece adaptable to the opening (40) is attached.
    [10]
    A method according to claim 9, characterized in that the hatch (45) comprises an adapter piece (45c) which can be fitted in the opening (40), a washer (45b) which can be placed inside the fuel tank (7) and a seal (45a) through which said threaded rod (45e) and a metal plate (45b) and a seal (45a) resting on the surface of the fuel tank located outside the fuel tank (7). o
    [11]
    Cleaning means (1) for use in one of the preceding methods, characterized in that the cleaning means (1) comprises a cleaning unit (10) comprising a tubular fuel assembly (Q) which can be fitted inside the fuel tank (7). a substance supply unit (30a) and a tubular fuel removal unit (30b) and 3 tubular air supply units (35).
    I &
    [12]
    Cleaning means (1) according to Claim 11, characterized in that the upper part of the cleaning unit 3 has a stop (301) movable in the longitudinal direction of the cleaning unit, through which an opening passes around the O-feed unit (30a) and the discharge unit (30b) inserted through the opening. and a tubular body of the air supply unit (35) and which restrictor (301) is supported on the outer surface of the fuel tank (7).
    [13]
    Cleaning means (1) according to Claim 11 or 12, characterized in that the tubular body of the air supply unit (35) can be rotated about its longitudinal axis in the opening of the stop (301).
    [14]
    Cleaning means according to Claim 13, characterized in that the air supply unit (35) has two supply heads (2a1, 2a2) from which the discharge air jets are directed in opposite directions.
    [15]
    Cleaning means (1) according to one of Claims 11 to 14, characterized in that the tubular body of the supply unit (30a) and the discharge unit (30b) and the air supply unit (35) is pushed through a flange (302) in their lower part.
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    同族专利:
    公开号 | 公开日
    FI129249B|2021-10-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2020-05-27| PC| Transfer of assignment of patent|Owner name: DIESELBAR OY |
    2021-10-15| FG| Patent granted|Ref document number: 129249 Country of ref document: FI Kind code of ref document: B |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20207084A|FI129249B|2020-05-14|2020-05-14|Method for cleaning the inside of a fuel tank fastened to a vehicle, and cleaning tool used in the method|FI20207084A| FI129249B|2020-05-14|2020-05-14|Method for cleaning the inside of a fuel tank fastened to a vehicle, and cleaning tool used in the method|
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