CN111232230B - An aircraft fuel tank anti-fluctuation device - Google Patents

Abstract

The invention relates to the technical field of aircraft fuel tanks, in particular to an aircraft fuel tank anti-fluctuation device, comprising a fuel tank body, electromagnetic telescopic rods are provided on the outside of the fuel tank cover on both sides of the fuel tank body, and the electromagnetic telescopic rods extend to the inside of the fuel tank body. There is a sealing plate, an oil inlet pipe body is arranged at the upper end of the middle part of the oil tank body, and an oil outlet pipe body is arranged under the middle part of the oil tank body. , so that the two sealing plates clamp the oil storage cavity, so that the fuel inside the oil storage cavity is always in a high liquid level state, so as to ensure the stable oil output of the oil outlet pipe body.

Description

An aircraft fuel tank anti-fluctuation device

technical field

The invention relates to the technical field of aircraft fuel tanks, in particular to an aircraft fuel tank anti-fluctuation device.

Background technique

During the flight of the aircraft (especially in the case of side flight, inverted flight, and roll), the oil pipe weight in the aircraft fuel tank cannot be absolutely guaranteed to be below the oil level, and sometimes a small amount of air is drawn, resulting in The situation of fuel cut will lead to the unsmooth operation of the aircraft engine; with the use of fuel in the fuel tank of the aircraft, the lower the fuel level, the more likely the fuel cut will occur; during the operation of the aircraft, due to the turbulence of the aircraft itself, the The fuel fluctuates violently, and a large number of air bubbles are mixed into the fuel, which affects the quality of the fuel.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an anti-fluctuation device for a fuel tank of an aircraft to solve the above-mentioned problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions: an aircraft fuel tank anti-fluctuation device, comprising a fuel tank body, the ports on both sides of the fuel tank body are fixedly connected with a fuel tank cover by bolts, and the outer side walls of the two fuel tank covers are fixed. An electromagnetic telescopic rod is provided, the telescopic rod of the electromagnetic telescopic rod penetrates into the interior of the fuel tank body, and the end of the telescopic rod of the fuel tank body is provided with a top plate, and the inner side wall of the top plate is connected with a sealing plate through a sealing plate connecting rod group. An oil inlet pipe body is arranged at the upper end of the middle part of the oil tank body, and an oil outlet pipe body is arranged under the middle part of the oil tank body. , and an anti-reverse flow assembly is arranged in the oil inlet passage, a port of the anti-reverse flow cylinder seat close to the sealing block is connected with an electromagnetic oil inlet valve, and an upper port of the oil inlet pipe body is connected with an electromagnetic exhaust valve.

Preferably, the sealing plate connecting rod group includes a sealing plate guide rod and a tension spring, the sealing plate guide rod is a telescopic rod assembly formed by an inner sliding rod and an outer sleeve sleeved with each other, and the tension spring is sleeved on the sealing plate. The plate guides the outside of the rod, and the two ends of the tension spring are respectively connected to the top plate and the side wall of the sealing plate.

Preferably, the outer wall of the sealing plate is in sliding contact with the inside of the oil tank body, the outer wall of the sealing plate is provided with 2-3 piston ring grooves, and the piston ring grooves are provided with piston rings.

Preferably, the anti-reverse flow assembly includes a pressure cap, a screw rod, a sealing block connecting rod group and a sealing block, one end of the anti-reverse flow cylinder seat is threadedly connected with a pressure cap, and the middle of the pressure cap is screwed with a pressure cap which is connected to the inside of the anti-reverse flow cylinder seat. The screw with the coaxiality of the oil passage, the inner end of the screw is connected with a sealing block through the sealing block connecting rod group.

Preferably, the inner wall of the oil inlet channel inside the anti-reverse flow cylinder seat is integrally formed with a constriction, and the sealing block is close to the sealing constriction.

Preferably, the sealing block connecting rod group is composed of a sealing block guide rod and a compression spring, the sealing block guide rod is a telescopic rod assembly formed by a guide rod and a guide cylinder sleeved with each other, and the compression spring is sleeved on the sealing block guide rod The two ends of the compression spring are in pressing contact with the inner end of the screw rod and the sealing block respectively.

Preferably, an oil pressure sensor and a temperature sensor are arranged in the middle of the outer wall of the oil tank body, and the detection ends of the oil pressure sensor and the temperature sensor are inserted through the inside of the oil tank body.

Preferably, a laser displacement sensor is provided above both ends of the inner wall of the fuel tank body, and the detection end of the laser displacement sensor points to the side close to the sealing plate.

Compared with the prior art, the beneficial effects of the present invention are: the present invention has a reasonable structure, strong functionality, and the following advantages:

1. The present invention works by controlling the electromagnetic telescopic rod, and cooperates with the telescopic rod of the electromagnetic telescopic rod to extend and feed, so that the two sealing plates clamp the oil storage cavity, so that the fuel inside the oil storage cavity is always in a high liquid level state. , to ensure the stable oil output of the oil outlet pipe body;

2. The present invention can discharge the air in the oil storage cavity inside the oil tank body by closing the electromagnetic oil inlet valve and opening the electromagnetic exhaust valve, and the two sealing plates are clamped together to effectively reduce the fluctuation of fuel oil in the oil storage cavity. ;

3. The oil pressure sensor provided in the middle of the outer wall of the fuel tank body of the present invention is used to detect the internal pressure of the oil storage cavity of the fuel tank body, and the temperature sensor is provided to detect the internal temperature of the oil storage cavity of the fuel tank body. Some laser displacement sensors are used to detect the positions of the two sealing plates inside the fuel tank body. Combined with the existing computer technology to calculate, the volume of the oil storage cavity of the fuel tank body can be calculated. Combined with the pressure data detected by the oil pressure sensor, it can be calculated. Get the level of fuel inside the reservoir.

Description of drawings

Fig. 1 is the structure half sectional view of the present invention;

Fig. 2 is the structural representation of the present invention;

Fig. 3 is the front sectional view of the structure of the present invention;

FIG. 4 is an enlarged view of A in FIG. 3 .

In the figure: fuel tank body 1, fuel tank cover 2, electromagnetic telescopic rod 3, top plate 4, sealing plate connecting rod group 5, sealing plate guide rod 51, tension spring 52, sealing plate 6, oil inlet pipe body 7, oil outlet pipe body 8. Anti-reverse flow cylinder seat 9, constriction 91, anti-reverse flow assembly 10, pressure cap 101, screw 102, sealing block connecting rod group 103, sealing block 104, electromagnetic oil inlet valve 11, electromagnetic exhaust valve 12, oil pressure sensor 13. Temperature sensor 14, laser displacement sensor 15.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to FIGS. 1 to 4 , the present invention provides a technical solution: an anti-fluctuation device for a fuel tank of an aircraft, comprising a fuel tank body 1 , as shown in FIGS. 1 and 3 , the ports on both sides of the fuel tank body 1 are fixedly connected by bolts There is a fuel tank cover 2, and the outer side walls of the two fuel tank covers 2 are fixedly provided with electromagnetic telescopic rods 3. The telescopic rods of the electromagnetic telescopic rods 3 penetrate into the interior of the fuel tank body 1, and the end of the telescopic rods of the fuel tank body 1 is provided with a top plate 4. , the inner side wall of the top plate 4 is connected with the sealing plate 6 through the sealing plate connecting rod group 5, and the cavity between the two sealing plates 6 inside the fuel tank body 1 is the oil storage cavity. The telescopic rod is extended and fed, so that the fuel inside the oil storage chamber is always at a high level.

1 and 3, an oil inlet pipe body 7 is arranged at the upper end of the middle part of the oil tank body 1, an oil outlet pipe body 8 is arranged under the middle part of the oil tank body 1, and the middle part of the oil inlet pipe body 7 is integrally formed with a horizontal horizontal anti-reverse flow. The cylinder seat 9 is provided with an oil inlet channel inside the anti-reverse flow cylinder base 9, and an electromagnetic oil inlet valve 11 is connected to a port of the anti-reverse flow cylinder base 9 close to the sealing block 104, and the anti-reverse flow cylinder base 9 can be opened to the oil tank only when the anti-reverse flow cylinder base 9 is opened. The interior of the body 1 is supplemented with fuel, and when the anti-reverse flow cylinder seat 9 is closed, a vacuum inner cavity is formed inside the fuel tank body 1, and the fuel is in a state of high liquid level when the two sealing plates 6 are clamped, reducing the fluctuation state of the fuel. To ensure that the oil outlet pipe body 8 can stably discharge oil, the upper port of the oil inlet pipe body 7 is connected with an electromagnetic exhaust valve 12, the electromagnetic exhaust valve 12 is opened, and the oil tank body is clamped by the two sealing plates 6. 1 The air in the internal oil storage chamber is exhausted.

As shown in FIG. 2, the above-mentioned sealing plate connecting rod group 5 includes a sealing plate guide rod 51 and a tension spring 52. The sealing plate guide rod 51 is a telescopic rod assembly formed by an inner sliding rod and an outer sleeve that are sleeved with each other. The extension spring 52 is sleeved on the outside of the sealing plate guide rod 51, and the two ends of the extension spring 52 are respectively connected to the side walls of the top plate 4 and the sealing plate 6, and the telescopic sealing plate connecting rod group 5 can be used to supplement the electromagnetic telescopic rod. The length of the telescopic rod is 3. When the oil storage cavity inside the fuel tank body 1 is in a closed state, with the use of fuel, the two sealing plates 6 can be pulled together in the direction of approaching. The outer wall of the sealing plate 6 and the fuel tank body 1 The interior is suitable for sliding contact. The outer wall of the sealing plate 6 is provided with 2-3 piston ring grooves, and the piston ring grooves are provided with piston rings to ensure the sealing performance of the connection between the sealing plate 6 and the interior of the fuel tank body 1 .

3 and 4, an anti-reverse flow assembly 10 is provided in the oil inlet channel inside the anti-reverse flow cylinder seat 9, and the anti-reverse flow assembly 10 includes a pressure cap 101, a screw 102, a sealing block connecting rod group 103 and a sealing block 104. One end of the anti-reverse flow cylinder seat 9 is screwed with a pressure cap 101, the middle of the pressure cap 101 is screwed with a screw 102 that is coaxial with the oil inlet channel inside the anti-reverse flow cylinder base 9, and the inner end of the screw 102 is connected by a sealing block connecting rod The group 103 is connected with a sealing block 104. The sealing block connecting rod group 103 is composed of a sealing block guide rod and a compression spring. The sealing block guide rod is a telescopic rod assembly formed by a guide rod and a guide cylinder sleeved with each other. The sealing block guides the outside of the rod, and the two ends of the compression spring are in contact with the inner end of the screw 102 and the sealing block 104 respectively. Under the action of the compression spring set in the group 103, the sealing block 104 is made close to the sealing constriction 91 to prevent the backflow of the fuel inside the fuel tank body 1. By rotating and tightening the screw 102, the sealing block 104 can be adjusted to the constriction 91. compressive force.

2 and 3, an oil pressure sensor 13 and a temperature sensor 14 are arranged in the middle of the outer wall of the fuel tank body 1, and the detection ends of the oil pressure sensor 13 and the temperature sensor 14 are inserted into the interior of the fuel tank body 1, and the oil pressure sensor 13 is used to detect the internal pressure of the oil storage cavity of the fuel tank body 1. The temperature sensor 14 detects the internal temperature of the oil storage cavity of the fuel tank body 1. A laser displacement sensor 15 is provided above both ends of the inner wall of the fuel tank body 1, and the laser displacement sensor The detection end of 15 points to the side close to the sealing plate 6. The laser displacement sensor 15 is used to detect the positions of the two sealing plates 6 inside the fuel tank body 1. The calculation is carried out in combination with the existing computer technology, and the oil storage cavity of the fuel tank body 1 can be known. The volume, combined with the pressure data detected by the oil pressure sensor 13, can calculate the liquid level of the fuel in the oil storage chamber.

Working principle: As shown in Figure 2, during the use of fuel, the electromagnetic telescopic rod 3 is controlled to work, and the telescopic rod of the electromagnetic telescopic rod 3 is extended and fed, so that the two sealing plates 6 clamp the oil storage cavity. close the electromagnetic oil inlet valve 11 and open the electromagnetic exhaust valve 12, and cooperate with the two sealing plates 6 to clamp When closed, the air in the oil storage cavity inside the fuel tank body 1 can be discharged, effectively reducing the fluctuation of fuel in the oil storage cavity; the oil pressure sensor 13 provided in the middle of the outer wall of the fuel tank body 1 is used to detect the For the internal pressure, a temperature sensor 14 is provided to detect the internal temperature of the oil storage cavity of the fuel tank body 1. The laser displacement sensors 15 provided above both ends of the inner wall of the fuel tank body 1 are used to detect the position of the two sealing plates 6 inside the fuel tank body 1. , Combining the calculation with the existing computer technology, the volume of the oil storage cavity of the fuel tank body 1 can be known. Combined with the pressure data detected by the oil pressure sensor 13, the liquid level of the fuel in the oil storage cavity can be calculated.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (1)

1. an anti-fluctuation device for a fuel tank of an aircraft, comprising a fuel tank body (1), characterized in that: the ports on both sides of the fuel tank body (1) are fixedly connected with a fuel tank cover (2) by bolts, and two fuel tank covers (2) ) are fixedly provided with electromagnetic telescopic rods (3), the telescopic rods of the electromagnetic telescopic rods (3) penetrate into the interior of the fuel tank body (1), and the ends of the telescopic rods of the fuel tank body (1) are provided with a top plate (4). ), the inner side wall of the top plate (4) is connected with the sealing plate (6) through the sealing plate connecting rod group (5), the upper end of the middle part of the oil tank body (1) is provided with an oil inlet pipe body (7), and the oil tank body (1) An oil outlet pipe body (8) is arranged below the middle part of the oil inlet pipe body (7), and a horizontal and horizontal anti-reverse flow cylinder seat (9) is integrally formed in the middle part of the oil inlet pipe body (7). The oil inlet channel is provided with an anti-reverse flow assembly (10), a port of the anti-reverse flow cylinder seat (9) close to the sealing block (104) is connected with an electromagnetic oil inlet valve (11), and the oil inlet pipe body (7) The upper port is connected with an electromagnetic exhaust valve (12); The sealing plate connecting rod group (5) includes a sealing plate guide rod (51) and a tension spring (52), and the sealing plate guide rod (51) is a telescopic rod formed by an inner sliding rod and an outer sleeve that are sleeved with each other the assembly, the tension spring (52) is sleeved on the outside of the sealing plate guide rod (51), and the two ends of the tension spring (52) are respectively connected to the side wall of the top plate (4) and the sealing plate (6); The outer wall of the sealing plate (6) is in sliding contact with the inside of the oil tank body (1), the outer wall of the sealing plate (6) is provided with 2-3 piston ring grooves, and the piston ring grooves are provided with piston rings; The anti-reverse flow assembly (10) includes a pressure cap (101), a screw (102), a sealing block connecting rod group (103) and a sealing block (104), and one end of the anti-reverse flow cylinder seat (9) is threadedly connected with a pressure cap (101), the middle of the pressure cap (101) is screwed with a screw (102) that is coaxial with the oil inlet channel inside the anti-reverse flow cylinder seat (9), and the inner end of the screw (102) is connected to the rod group (103) through the sealing block. ) is connected with a sealing block (104); The sealing block connecting rod group (103) is composed of a sealing block guide rod and a compression spring, the sealing block guide rod is a telescopic rod assembly formed by a guide rod and a guide cylinder sleeved with each other, and the compression spring is sleeved on the sealing block guide rod. the outside of the part, and the two ends of the compression spring are in pressing contact with the inner end of the screw rod (102) and the sealing block (104) respectively; The inner wall of the oil inlet channel inside the anti-backflow cylinder seat (9) is integrally formed with a constriction (91), and the sealing block (104) is in close contact with the sealing constriction (91); in the sealing block connecting rod group (103) Under the action of the set compression spring, the sealing block (104) is made close to the sealing constriction (91) to prevent the backflow of the fuel inside the fuel tank body (1). ) on the compression force at the neck (91); An oil pressure sensor (13) and a temperature sensor (14) are arranged in the middle of the outer wall of the oil tank body (1), and the detection ends of the oil pressure sensor (13) and the temperature sensor (14) are inserted through the oil tank body (1). internal; A laser displacement sensor (15) is provided above both ends of the inner wall of the fuel tank body (1), and the detection end of the laser displacement sensor (15) points to the side close to the sealing plate (6); During the use of fuel, by controlling the electromagnetic telescopic rod (3) to work, and cooperating with the telescopic rod of the electromagnetic telescopic rod (3) to extend and feed, the two sealing plates (6) clamp the oil storage cavity, so that the The fuel inside the oil storage chamber is always at a high liquid level to ensure stable oil output from the oil outlet pipe body (8). When the plate (6) is clamped, the air in the oil storage cavity inside the fuel tank body (1) can be discharged, effectively reducing the fluctuation of fuel in the oil storage cavity; the oil pressure sensor (13) is provided in the middle of the outer wall of the fuel tank body (1). It is used to detect the internal pressure of the oil storage cavity of the fuel tank body (1), and is provided with a temperature sensor (14). Due to the detection of the internal temperature of the oil storage cavity of the fuel tank body (1), there are provided above both ends of the inner wall of the fuel tank body (1). The laser displacement sensor (15) is used to detect the positions of the two sealing plates (6) inside the fuel tank body (1), and to calculate the volume of the oil storage cavity of the fuel tank body (1), combined with the pressure detected by the oil pressure sensor (13) The data can be calculated to calculate the level of fuel in the oil storage chamber.

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