CN111056021B - Mechanical fuel oil gravity center control oil tank - Google Patents
Mechanical fuel oil gravity center control oil tank Download PDFInfo
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- CN111056021B CN111056021B CN201911422493.7A CN201911422493A CN111056021B CN 111056021 B CN111056021 B CN 111056021B CN 201911422493 A CN201911422493 A CN 201911422493A CN 111056021 B CN111056021 B CN 111056021B
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- 230000005484 gravity Effects 0.000 title claims abstract description 36
- 239000003921 oil Substances 0.000 title claims description 418
- 239000000295 fuel oil Substances 0.000 title claims description 36
- 239000000446 fuel Substances 0.000 claims abstract description 64
- 238000005192 partition Methods 0.000 claims abstract description 52
- 239000002828 fuel tank Substances 0.000 claims abstract description 47
- 238000000034 method Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT 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
- B64D37/08—Internal partitioning
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/32—Safety measures not otherwise provided for, e.g. preventing explosive conditions
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention discloses a mechanical fuel gravity center control fuel tank, which comprises a closed fuel tank main body, wherein a first sub fuel tank, a second sub fuel tank, a third sub fuel tank, a fourth sub fuel tank, a fuel passing bin and a fuel supply tank which are independent are reasonably arranged in the fuel tank main body in a dividing manner, the fuel supply tank divides the fuel passing bin into a head fuel passing bin and a tail fuel passing bin, the second sub fuel tank and the fuel passing bin are separated by a first lower partition plate, a first float valve is arranged on the first lower partition plate, the third sub fuel tank and the fuel passing bin are separated by a second lower partition plate, and a second float valve is arranged on the second lower partition plate; the fuel feed tank on be provided with respectively and cross the baffle check valve that the oil storehouse is linked together with the head with the tail, whole oil tank adopts mechanical type principle control, carries out reasonable division with the oil tank, has reached the centrobaric purpose of fuel of control aircraft, whole oil tank size is little, light in weight is applicable to unmanned aerial vehicle.
Description
Technical Field
The invention belongs to the field of aviation, and relates to an aircraft fuel tank, in particular to a mechanical fuel gravity center control fuel tank.
Background
During the flight fuel consumption process of the airplane, the gravity center of fuel oil needs to be controlled, so that the gravity center of the whole airplane is kept in a certain range, the fuel oil far away from the theoretical gravity center of the airplane in an oil tank needs to be consumed preferentially, and the fuel oil close to the theoretical gravity center is consumed finally. Generally, fuel oil at other parts is transferred to an oil supply tank for consumption by adopting modes of an oil pump or an ejector pump and the like on an airplane, and a fuel oil measuring system is used for monitoring the fuel oil quantity at any time so as to ensure that the gravity center of the fuel oil is always kept in a required range. But because of part unmanned aerial vehicle oil tank size is less, and length is longer, and highly very low can't take above-mentioned method oil transportation, and the fuel can only consume under the action of gravity, and current unmanned aerial vehicle oil tank has following shortcoming under this state:
1. the fuel uniformly descends in the oil tank at the same liquid level, when the aircraft generates a pitch angle, the fuel flows to the front end or the rear end of the oil tank under the action of gravity, the gravity center of the fuel is greatly deviated, and the gravity center of the aircraft exceeds the limit;
2. the fuel oil can greatly shake in the oil tank, so that an oil suction port can be exposed out of the oil level and cannot continuously supply oil to the engine;
3. the oil tanks are only divided along the heading direction without adopting other control forms, under the action of gravity, the oil tanks can consume oil at equal liquid level, and the gravity center of the fuel oil still cannot be controlled.
Based on above shortcoming, unmanned aerial vehicle's fuel focus can not control, can influence flight mobility and safety.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a mechanical fuel oil gravity center control oil tank which can solve the technical problem that the fuel oil gravity center of the existing unmanned aerial vehicle cannot be controlled.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a mechanical type fuel focus control oil tank, includes confined oil tank main part, oil tank main part include the casing, go up the casing bottom and be provided with the bottom plate, the aircraft nose end of going up casing and bottom plate is provided with the front end plate, the tail end of going up casing and bottom plate is provided with the back end plate:
the oil tank main body is internally provided with a first sub oil tank, a second sub oil tank, a third sub oil tank, a fourth sub oil tank, an oil passing bin and an oil supply tank which are independent, and the first sub oil tank, the second sub oil tank, the third sub oil tank and the fourth sub oil tank are sequentially arranged in the oil tank main body along the direction from the machine head to the machine tail; the oil passing bin is positioned below the second sub oil tank and the third sub oil tank, the oil supply tank is positioned in the oil passing bin, the oil passing bin is divided into a head oil passing bin and a tail oil passing bin which are independent by the oil supply tank, the head oil passing bin is adjacent to the first sub oil tank, and the tail oil passing bin is adjacent to the fourth sub oil tank;
the first sub oil tank and the second sub oil tank are separated from the oil passing bin by a first vertical partition plate, the second sub oil tank and the third sub oil tank are separated from each other by a second vertical partition plate, the third sub oil tank and the oil passing bin are separated from the fourth sub oil tank by a third vertical partition plate, the second sub oil tank and the oil passing bin are separated from each other by a first lower partition plate, and the third sub oil tank and the oil passing bin are separated from each other by a second lower partition plate;
the first vertical partition plate is provided with a first string of oil holes for communicating the first sub oil tank with the head oil passing bin, and the third vertical partition plate is provided with a second string of oil holes for communicating the fourth sub oil tank with the tail oil passing bin; the first lower partition plate is provided with a first float valve for communicating the second sub-oil tank with the head oil passing bin, the second lower partition plate is provided with a second float valve for communicating the third sub-oil tank with the tail oil passing bin, the oil supply tank is respectively provided with a baffle one-way valve communicated with the head oil passing bin and the tail oil passing bin, and fuel oil flows into the oil supply tank through the baffle one-way valve;
the first sub oil tank and the fourth sub oil tank are respectively provided with a vent nozzle; a first vent pipe is arranged between the first sub-oil tank and the second sub-oil tank, and a second vent pipe is arranged between the second sub-oil tank and the third sub-oil tank; a third air through pipe is arranged between the third sub-oil tank and the oil supply tank;
the first sub oil tank, the second sub oil tank, the third sub oil tank and the fourth sub oil tank are respectively provided with an oil filling port; the oil tank main body is provided with an oil supply port which is communicated with the oil supply tank through an oil supply pipe; the oil tank main body is also provided with an oil return port, and the oil return port is communicated with the oil supply tank through an oil return pipe.
The invention also has the following technical characteristics:
and the top parts of the upper shells of the first sub oil tank and the fourth sub oil tank are provided with vent nozzles.
The top parts of the upper shells of the first sub oil tank, the second sub oil tank, the third sub oil tank and the fourth sub oil tank are respectively provided with an oil filling port; the rear end plate is provided with an oil supply port which is communicated with an oil supply tank through an oil supply pipe; and the rear end plate is also provided with an oil return port, and the oil return port is communicated with the oil supply tank through an oil return pipe.
And a guide plate is arranged at the bottom of the fourth sub-oil tank, the top surface of the guide plate is an inclined slope surface, and the lower part of the slope surface of the top surface of the guide plate is close to the second oil stringing hole.
The slope gradient of the top surface of the flow guide plate is 4-6 degrees.
The volume proportion of the first sub-oil tank, the second sub-oil tank, the third sub-oil tank, the fourth sub-oil tank, the head oil passing bin, the tail oil passing bin and the oil supply tank is as follows: (15-16): (7-8): (26-27): (20-21): (8-9): (1-1.5): 1.
The center position of the oil supply tank is located at 2/3 along the length from the head to the tail in the oil tank main body.
The distance between the first lower partition plate and the bottom plate is higher than the distance between the second lower partition plate and the bottom plate.
The bottom plate comprises a middle flat plate arranged along the direction from the machine head to the machine tail, two sides of the middle flat plate are respectively connected with the bottom of the upper shell through side plates, and an included angle between each side plate and the middle flat plate is an obtuse angle.
Compared with the prior art, the invention has the following technical effects:
(I) the invention designs the oil passing bin and the oil supply tank which are positioned at the bottom of the oil tank by reasonably dividing the whole oil tank, and simultaneously matches the use of the float valve and the baffle one-way valve to preferentially consume the fuel oil in the oil tank far away from the theoretical gravity center and then consume the fuel oil in the oil tank close to the theoretical gravity center, so that the oil supply tank which is finally consumed always keeps a full oil state, thereby effectively realizing the mechanical adjustment of the aircraft fuel oil gravity center, greatly improving the reliability of oil supply and delivery, reducing the influence on the flight maneuverability, ensuring the safety of the aircraft and having good practical value.
(II) the oil supply tank is always in a full oil state, and an oil suction port of an oil supply pipeline arranged in the oil supply tank cannot expose an oil surface in any flight state, so that fuel oil can be effectively and continuously supplied to an engine, and the flight safety is ensured.
According to the invention, (III) through the design of the guide plate at the bottom of the fourth oil tank, the problem that the fuel at the rear end of the oil tank cannot supply oil to the oil supply tank continuously due to the fact that the unmanned aerial vehicle can maintain a 2-4-degree cruise angle in a cruise state is effectively solved, and the fuel at the rear end of the oil tank can supply oil to the oil supply tank smoothly and continuously.
Drawings
Fig. 1 is a schematic view of the overall structure of the fuel tank of the invention.
Fig. 2 is a schematic diagram of the front end surface structure of the oil tank.
Fig. 3 is a schematic view of the internal overall structure of the fuel tank of the present invention.
Fig. 4 is a schematic view of the bottom structure of the fuel tank of the present invention.
Fig. 5 is a left sectional structural schematic view of the fuel tank of the present invention.
Fig. 6 is a right sectional structural schematic view of the fuel tank of the present invention.
The meaning of the individual reference symbols in the figures is:
1-an oil tank main body, 2-an upper shell, 3-a bottom plate, 4-a front end plate, 5-a rear end plate, 6-a first sub-oil tank, 7-a second sub-oil tank, 8-a third sub-oil tank, 9-a fourth sub-oil tank, 10-an oil passing bin, 11-an oil supply tank, 12-a head oil passing bin, 13-a tail oil passing bin, 14-a first vertical partition plate, 15-a second vertical partition plate, 16-a third vertical partition plate, 17-a first lower partition plate, 18-a second lower partition plate, 19-a first oil string hole, 20-a second oil string hole, 21-a first float valve, 22-a second float valve, 23-a baffle one-way valve, 24-a vent nozzle, 25-a first vent pipe, 26-a second vent pipe, 27-a third vent pipe and 28-an oil filling port, 29-oil supply port, 30-oil supply pipe, 31-oil return port, 32-oil return pipe, 33-guide plate, 34-middle flat plate, 35-side plate, 36-reinforcing flange, 37-structural support plate, 38-oil hole, 39-filling partition plate.
The present invention will be explained in further detail with reference to examples.
Detailed Description
The following embodiments of the present invention are provided, and it should be noted that the present invention is not limited to the following embodiments, and all equivalent changes based on the technical solutions of the present invention are within the protection scope of the present invention.
Example (b):
according to the technical scheme, as shown in fig. 1 to 6, the present embodiment provides a mechanical fuel oil center-of-gravity control fuel tank, which includes a closed fuel tank main body 1, wherein the fuel tank main body 1 includes an upper shell 2, a bottom plate 3 is disposed at the bottom of the upper shell 2, front end plates 4 are disposed at the head ends of the upper shell 2 and the bottom plate 3, and a rear end plate 5 is disposed at the tail ends of the upper shell 2 and the bottom plate 3;
the oil tank main body 1 is internally provided with a first sub oil tank 6, a second sub oil tank 7, a third sub oil tank 8, a fourth sub oil tank 9, an oil passing bin 10 and an oil supply tank 11 which are independent, and the first sub oil tank 6, the second sub oil tank 7, the third sub oil tank 8 and the fourth sub oil tank 9 are sequentially arranged in the oil tank main body 1 along the direction from the machine head to the machine tail; the oil passing bin 10 is positioned below the second sub oil tank 7 and the third sub oil tank 8, the oil supply tank 11 is positioned in the oil passing bin 10, the oil passing bin 10 is divided into an independent head oil passing bin 12 and a tail oil passing bin 13 by the oil supply tank 11, the head oil passing bin 12 is adjacent to the first sub oil tank 6, and the tail oil passing bin 13 is adjacent to the fourth sub oil tank 9;
the first sub oil tank 6 is separated from the second sub oil tank 7 and the oil passing bin 10 by a first vertical partition 14, the second sub oil tank 7 is separated from the third sub oil tank 8 by a second vertical partition 15, the third sub oil tank 8 is separated from the oil passing bin 10 and the fourth sub oil tank 9 by a third vertical partition 16, the second sub oil tank 7 is separated from the oil passing bin 10 by a first lower partition 17, and the third sub oil tank 8 is separated from the oil passing bin 10 by a second lower partition 18;
a first series of oil holes 19 for communicating the first sub-oil tank 6 with the head oil passing bin 12 are formed in the first vertical partition plate 14, and a second series of oil holes 20 for communicating the fourth sub-oil tank 9 with the tail oil passing bin 13 are formed in the third vertical partition plate 16; a first float valve 21 used for communicating the second sub-oil tank 7 with the head oil passing bin 12 is installed on the first lower partition plate 17, a second float valve 22 used for communicating the third sub-oil tank 8 with the tail oil passing bin 13 is installed on the second lower partition plate 18, a baffle one-way valve 23 communicated with the head oil passing bin 12 and the tail oil passing bin 13 is respectively arranged on the oil supply tank 11, and fuel oil flows into the oil supply tank 11 through the baffle one-way valve 23;
the first sub oil tank 6 and the fourth sub oil tank 9 are both provided with a vent nozzle 24; a first vent pipe 25 is arranged between the first sub-oil tank 6 and the second sub-oil tank 7, and a second vent pipe 26 is arranged between the second sub-oil tank 7 and the third sub-oil tank 8; a third air through pipe 27 is arranged between the third sub-oil tank 8 and the oil supply tank 11;
the first sub oil tank 6, the second sub oil tank 7, the third sub oil tank 8 and the fourth sub oil tank 9 are respectively provided with an oil filling port 28; the oil tank main body 1 is provided with an oil supply port 29, and the oil supply port 29 is communicated with the oil supply tank 11 through an oil supply pipe 30; the oil tank main body 1 is further provided with an oil return port 31, and the oil return port 31 is communicated with the oil supply tank 11 through an oil return pipe 32.
As a preferable scheme of this embodiment, the top of the upper shell 2 of each of the first sub-oil tank 6 and the fourth sub-oil tank 9 is provided with the vent nozzle 24, and the vent nozzles 24, the first vent pipe 25, the second vent pipe 26 and the third vent pipe 27 are arranged to communicate the oil tanks with the atmosphere, so as to eliminate pressure difference, thereby solving the problem that in the continuous consumption process of fuel oil, because the oil level in the oil tank is continuously lowered, a certain vacuum degree is generated in the oil tank, and the fuel oil cannot be continuously supplied to the oil supply tank under the action of gravity due to the influence of the vacuum degree.
As a preferable scheme of the present embodiment, the top of the upper casing 2 of the first sub oil tank 6, the second sub oil tank 7, the third sub oil tank 8 and the fourth sub oil tank 9 is respectively provided with an oil filling port 28, and the first sub oil tank 6, the second sub oil tank 7, the third sub oil tank 8 and the fourth sub oil tank 9 are filled with fuel through the oil filling port 28; the rear end plate 5 is provided with a fuel supply port 29, the fuel supply port 29 is communicated with the fuel supply tank 11 through a fuel supply pipe 30, and fuel is continuously supplied to the engine from the fuel supply tank 11 through the fuel supply pipe 30 and through the fuel supply port 29; the rear end plate 5 is further provided with an oil return port 31, the oil return port 31 is communicated with the oil supply tank 11 through an oil return pipe 32, the oil return pipe 32 sequentially penetrates through the fourth sub-oil tank 9 and the third sub-oil tank 8 when being arranged and is communicated with the oil supply tank 11, when the mechanical fuel oil gravity center control oil tank is used, only a part of fuel oil can enter a combustion chamber to be consumed due to the working characteristics of an engine, and the rest fuel oil is sent back to the oil supply tank 11 through the oil return pipe 32, so that the oil consumption can be reduced.
As a preferred scheme of this embodiment, the bottom of the fourth sub-tank 9 is provided with a flow guide plate 33, the top surface of the flow guide plate 33 is an inclined slope, and a lower portion of the slope of the top surface of the flow guide plate 33 is close to the second oil stringing hole 20, so as to solve the problem that the fuel oil of the fourth sub-tank 9 located at the rear end of the tank cannot continuously supply the fuel oil to the fuel supply tank 11 when the unmanned aerial vehicle generates a cruise angle in a cruise state.
Specifically, the domatic slope of guide plate 33 top surface is 4 ~ 6, and the angle of cruising that produces when unmanned aerial vehicle cruise status this moment is 2 ~ 4, and the domatic slope of preferred guide plate 33 top surface is 5, and under this slope, the fuel in the fourth fuel tank 9 can be smoothly continuous supplies oil tank 11 with oil supply.
As an optimal scheme of this embodiment, according to unmanned aerial vehicle's fuel focus scope, calculate unmanned aerial vehicle's fuel focus, through a lot of iteration tests, first sub-oil tank 6, second sub-oil tank 7, third sub-oil tank 8, fourth sub-oil tank 9, first oil passing bin 12, tail oil passing bin 13 and supply tank 11's volume size ratio scope is: (15-16): (7-8): (26-27): (20-21): (8-9): (1-1.5): 1;
as a preferable scheme of this embodiment, the volume of the first sub oil tank 6, the second sub oil tank 7, the third sub oil tank 8, the fourth sub oil tank 9, the head oil passing bin 12, the tail oil passing bin 13, and the oil supply tank 11 is:
at this moment, in the unmanned aerial vehicle flight fuel consumption process, the focus of whole machine keeps in safe range.
As a preferred scheme of this embodiment, the central point of fuel feeding tank 11 is located 2/3 department of aircraft nose to tail direction length in oil tank main part 1, and this position is close to unmanned aerial vehicle theoretical focus scope, is favorable to unmanned aerial vehicle focus control.
As a preferable scheme of the embodiment, the distance between the first lower partition 17 and the bottom plate 3 is greater than the distance between the second lower partition 18 and the bottom plate 3, the height difference between the distances is 10mm, and in order to control the fuel center of gravity during the flight fuel consumption process of an airplane, when the first sub-fuel tank 6 and the fourth sub-fuel tank 9 are continuously supplied with fuel for a certain time, the fuel level in the oil passing bin 10 is the same as the fuel level in the first sub-fuel tank 6 and the fourth sub-fuel tank 9, the fuel in the second sub-fuel tank 7 is preferentially consumed;
specifically, the height between the first lower partition 17 and the bottom plate 3 is 40mm, the height between the second lower partition 18 and the bottom plate 3 is 30mm, and the height of the oil supply tank 11 is 30 mm.
As a preferable mode of the present embodiment, a filling partition 39 is provided by attaching the second lower partition 18 to the upper side of the oil supply tank 11, the thickness of the filling partition 39 is 7mm, the actual height of the inside of the oil supply tank 11 is 23mm, and the height difference between the oil supply tank 11 and the oil passing bin 10 can avoid a partial empty oil region in the oil supply tank 11 when the second float valve is opened, thereby avoiding a situation that the oil supply tank 11 cannot supply oil continuously when the aircraft is in a negative overload state.
As a preferable scheme of this embodiment, the bottom plate 3 includes an intermediate flat plate 34 arranged along the direction from the head to the tail, two sides of the intermediate flat plate 34 are connected to the bottom of the upper casing 2 through side plates 35, respectively, and an included angle between the side plates 35 and the intermediate flat plate 34 is an obtuse angle, so that fuel in the first sub-fuel tank 6 and the fourth sub-fuel tank 9 can smoothly flow into the oil passing bin 10 through the first oil string holes 19 and the second oil string holes 20 under the action of gravity.
As a preferable solution of this embodiment, a reinforcing bead 36 is provided in the third sub tank 8 for supporting the upper case 2 of the third sub tank 8 and preventing the third sub tank 8 from deforming.
As a preferable mode of the present embodiment, a structure supporting plate 37 is provided in the fourth sub tank 9 perpendicular to the bottom for supporting the fourth sub tank 9 to prevent the fourth sub tank 9 from being deformed, and an oil hole 38 for passing fuel is provided in the structure supporting plate 37.
When the invention is used, in order to control the fuel gravity center of the airplane, the fuel in the first sub-fuel tank 6 and the fourth sub-fuel tank 9 far away from the theoretical gravity center needs to be consumed preferentially, the fuel in the first sub-fuel tank 6 flows into the head oil passing bin 12 through the first series of oil holes 19, the fuel in the fourth sub-fuel tank 9 flows into the tail oil passing bin 13 through the second series of oil holes 20, the fuel flows into the fuel supply tank 11 through the baffle check valve 23 which is arranged on the fuel supply tank 11 and is communicated with the head oil passing bin 12 and the tail oil passing bin 13 respectively, the baffle check valve 23 is opened in one direction in the fuel supply tank 11, the fuel in the oil passing bin 10 is ensured to flow into the fuel supply tank 11, meanwhile, the fuel in the fuel supply tank 11 is prevented from flowing out of the fuel supply tank 11, the second sub-fuel tank 7 and the third sub-fuel tank 8 are kept in a full-oil state during the consumption process of the first sub-fuel tank 6 and the fourth sub-fuel tank 9, when the fuel oil in the second sub-oil tank 7 and the third sub-oil tank 8 close to the theoretical gravity center is consumed, and the height between the oil surface in the oil passing bin 10 and the first lower partition plate 17 is 5-7 mm, the first float valve 21 is in a half-open state, the fuel in the second sub-fuel tank 7 is supplemented to the first fuel passing bin 12, when the height between the oil level in the oil passing bin 10 and the first lower partition 17 is greater than 7mm, the first float valve 21 is fully opened, the fuel oil in the second sub-tank 7 is continuously supplied to the oil supply tank 11 through the first oil passing bin 12, when the height between the oil level in the oil passing bin 10 and the second lower partition plate 18 is 5-7 mm, the second float valve 22 is in a half-open state, the fuel in the third sub-fuel tank 8 is supplemented to the tail fuel passing bin 13, when the height between the oil level in the oil passing bin 10 and the second lower partition plate 18 is greater than 7mm, the second float valve 22 is fully opened, and the fuel in the third sub-fuel tank 8 is continuously supplied to the fuel supply tank 11 through the head oil passing bin 12.
In the whole oil supply process, the fuel oil in the second sub-oil tank 7 is consumed firstly, the fuel oil in the third sub-oil tank 8 is consumed secondly, and the fuel oil in the first sub-oil tank 6 and the fourth sub-oil tank 9 is consumed thirdly, so that the oil supply tanks are always full of the fuel oil in the whole oil supply process.
Claims (9)
1. A mechanical fuel oil gravity center control oil tank comprises a closed oil tank main body (1), wherein the oil tank main body (1) comprises an upper shell (2), a bottom plate (3) is arranged at the bottom of the upper shell (2), a front end plate (4) is arranged at the head ends of the upper shell (2) and the bottom plate (3), and a rear end plate (5) is arranged at the tail ends of the upper shell (2) and the bottom plate (3);
the oil tank main body (1) is internally provided with a first sub-oil tank (6), a second sub-oil tank (7), a third sub-oil tank (8) and a fourth sub-oil tank (9) which are independent, and the first sub-oil tank (6), the second sub-oil tank (7), the third sub-oil tank (8) and the fourth sub-oil tank (9) are sequentially arranged in the oil tank main body (1) along the direction from the machine head to the machine tail;
the second sub oil tank (7) and the third sub oil tank (8) are separated by a second vertical partition plate (15);
oil tank main part (1) on be provided with and supply oil mouth (29), supply oil mouth (29) and supply oil tank (11) to be linked together through fuel feeding pipe (30), its characterized in that:
the oil filter is characterized by further comprising an oil passing bin (10) and an oil supply tank (11), wherein the oil passing bin (10) is located below the second sub oil tank (7) and the third sub oil tank (8), the oil supply tank (11) is located in the oil passing bin (10), the oil passing bin (10) is divided into an independent head oil passing bin (12) and a tail oil passing bin (13) by the oil supply tank (11), the head oil passing bin (12) is adjacent to the first sub oil tank (6), and the tail oil passing bin (13) is adjacent to the fourth sub oil tank (9);
the first sub oil tank (6) is separated from the second sub oil tank (7) and the oil passing bin (10) through a first vertical partition plate (14), the third sub oil tank (8) is separated from the oil passing bin (10) and the fourth sub oil tank (9) through a third vertical partition plate (16), the second sub oil tank (7) is separated from the oil passing bin (10) through a first lower partition plate (17), and the third sub oil tank (8) is separated from the oil passing bin (10) through a second lower partition plate (18);
a first series of oil holes (19) for communicating the first sub-oil tank (6) with the head oil passing bin (12) are formed in the first vertical partition plate (14), and a second series of oil holes (20) for communicating the fourth sub-oil tank (9) with the tail oil passing bin (13) are formed in the third vertical partition plate (16); a first float valve (21) used for communicating a second sub-oil tank (7) and a head oil passing bin (12) is installed on the first lower partition plate (17), a second float valve (22) used for communicating a third sub-oil tank (8) and a tail oil passing bin (13) is installed on the second lower partition plate (18), baffle one-way valves (23) communicated with the head oil passing bin (12) and the tail oil passing bin (13) are respectively arranged on the oil supply tank (11), and fuel oil flows into the oil supply tank (11) through the baffle one-way valves (23);
the first sub oil tank (6) and the fourth sub oil tank (9) are both provided with a vent nozzle (24); a first vent pipe (25) is arranged between the first sub-oil tank (6) and the second sub-oil tank (7), and a second vent pipe (26) is arranged between the second sub-oil tank (7) and the third sub-oil tank (8); a third vent pipe (27) is arranged between the third sub-oil tank (8) and the oil supply tank (11);
oil filling ports (28) are respectively arranged on the first sub oil tank (6), the second sub oil tank (7), the third sub oil tank (8) and the fourth sub oil tank (9); the oil tank main body (1) is further provided with an oil return opening (31), and the oil return opening (31) is communicated with the oil supply tank (11) through an oil return pipe (32).
2. The mechanical fuel oil center of gravity control tank as claimed in claim 1, characterized in that the top of the upper shell (2) of each of the first sub-tank (6) and the fourth sub-tank (9) is provided with a breather nozzle (24).
3. The mechanical fuel oil center of gravity control fuel tank as set forth in claim 1, characterized in that the top of the upper shell (2) of the first sub-fuel tank (6), the second sub-fuel tank (7), the third sub-fuel tank (8) and the fourth sub-fuel tank (9) is respectively provided with an oil filling port (28); the rear end plate (5) is provided with an oil supply port (29), and the oil supply port (29) is communicated with the oil supply tank (11) through an oil supply pipe (30); the rear end plate (5) is also provided with an oil return opening (31), and the oil return opening (31) is communicated with the oil supply tank (11) through an oil return pipe (32).
4. The mechanical fuel oil gravity center control oil tank as claimed in claim 1, characterized in that a guide plate (33) is arranged at the bottom of the fourth sub-oil tank (9), the top surface of the guide plate (33) is an inclined slope, and the lower part of the slope of the top surface of the guide plate (33) is close to the second oil through hole (20).
5. The mechanical fuel oil center of gravity control fuel tank of claim 4, characterized in that the slope of the top surface of the deflector (33) is 4 ° to 6 °.
6. The mechanical fuel oil gravity center control oil tank as set forth in claim 1, characterized in that the volume ratio of the first sub-oil tank (6), the second sub-oil tank (7), the third sub-oil tank (8), the fourth sub-oil tank (9), the head oil passing bin (12), the tail oil passing bin (13) and the oil supply tank (11) is: (15-16): (7-8): (26-27): (20-21): (8-9): (1-1.5): 1.
7. the mechanical fuel center of gravity control fuel tank as set forth in claim 1, wherein said fuel supply tank (11) is centrally located at 2/3 along the length in the nose-to-tail direction in the tank main body (1).
8. A mechanical fuel oil center of gravity control fuel tank according to claim 1, wherein the first lower partition (17) is spaced from the floor (3) more than the second lower partition (18) is spaced from the floor (3).
9. The mechanical fuel oil center of gravity control fuel tank as claimed in claim 1, characterized in that the bottom plate (3) comprises a middle plate (34) arranged along the direction from the head to the tail, both sides of the middle plate (34) are respectively connected with the bottom of the upper shell (2) through side plates (35), and the included angle between the side plates (35) and the middle plate (34) is an obtuse angle.
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