Plastic high pressure fuel tank assembly

Abstract

The present invention relates to the technical field of fuel tanks, specifically a plastic high-pressure fuel tank assembly, including a fuel tank, two end support columns are arranged at both ends of the fuel tank, and three middle support columns are arranged in the middle section of the fuel tank, the axes of the two end support columns are parallel to the axes of the three middle support columns, the three middle support columns are arranged in a triangular shape, and the two end support columns and the three middle support columns penetrate the fuel tank. The present invention improves the support strength of the fuel tank by arranging the end support columns and the middle support columns, thereby improving the anti-deformation ability of the fuel tank, avoiding deformation of the fuel tank under long-term use and high-pressure environment, and ensuring the normal driving of the vehicle.

Description

Technical Field

[0001] The invention relates to the technical field of fuel tanks, and in particular to a plastic high-pressure fuel tank assembly. Background Art

[0002] Conventional fuel tanks can also serve as storage and fuel supply devices, but PHEV and other vehicle models give priority to electric drive, and the engine is not always in working condition. As the use time increases, the internal pressure of the fuel tank will increase. Conventional fuel tanks cannot meet the needs of long-term use under high pressure conditions, and improvements need to be made to meet the use conditions under high pressure conditions.

[0003] The high-pressure fuel tank assembly is a key component in modern vehicles, especially diesel engine vehicles. It is different from the traditional fuel system and mainly serves the high-pressure common rail fuel injection system. This system is designed to improve fuel efficiency, reduce emissions, and enhance engine performance.

[0004] Existing high-pressure fuel tanks are usually made of new materials, mostly made of high-strength plastics. However, plastics are prone to deformation after long-term use and under high-pressure conditions, causing failures in the fuel tank and affecting the normal use of the vehicle.

[0005] Therefore, the present invention provides a plastic high pressure fuel tank assembly to solve the above problems. Summary of the invention

[0006] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a plastic high-pressure fuel tank assembly to solve the problem that the deformation of the high-pressure fuel tank affects the normal driving of the vehicle.

[0007] In order to achieve the above object, the technical solution adopted by the present invention is:

[0008] A plastic high-pressure fuel tank assembly includes a fuel tank, wherein two end support columns are arranged at both ends of the fuel tank, and three middle support columns are arranged in the middle section of the fuel tank. The axes of the two end support columns are parallel to the axes of the three middle support columns. The three middle support columns are arranged in a triangle, and the two end support columns and the three middle support columns pass through the fuel tank.

[0009] Specifically, when in use, the end support columns support the ends of the fuel tank, the middle support columns support the middle of the fuel tank, and the end support columns and the middle support columns cooperate to support the entire fuel tank.

[0010] By setting up the end support columns and the middle support columns, the supporting strength of the fuel tank is improved, thereby improving the deformation resistance of the fuel tank, avoiding deformation of the fuel tank under long-term use and high-pressure environment, and ensuring the normal driving of the vehicle.

[0011] Preferably, the structure of the end support column is the same as that of the middle support column, and the end support column includes a column body, and both ends of the column body are respectively fixedly connected with circular mounting plates, the mounting plates are located on the outside of the oil tank, the mounting plates are fixedly connected to the oil tank, and the column body passes through the oil tank.

[0012] Specifically, when in use, the mounting plate is fixedly connected to the outer side surface of the oil tank, and the column passes through the oil tank.

[0013] By setting the mounting plate, the contact area between the support column and the fuel tank is increased, the connection strength is increased, and the upper and lower surfaces of the fuel tank are connected and stretched through the column, so that the support column has a better supporting effect on the fuel tank and the connection is more stable.

[0014] Furthermore, the internal reinforcement support column adopts high-performance engineering materials and uses a secondary injection molding process. The bonding part material is consistent with the fuel tank, so that the bonding part and the fuel tank are perfectly combined. This fuel tank is used for PHEV hybrid models. When the vehicle is running in pure electric mode, the fuel tank is in a closed state, but the oil sloshes in the fuel tank, the ambient temperature and the volatility of gasoline and other factors can easily generate oil vapor, causing the internal pressure of the fuel tank to increase, and the fuel tank will expand outward. At this time, the built-in support column plays the role of holding the fuel tank and preventing deformation. When the vehicle is idling, the oil in the fuel tank will continue to be sucked into the engine, the internal pressure of the fuel tank will decrease, and a certain negative pressure will be generated. At this time, the built-in support column plays the role of preventing the fuel tank from being deflated and deformed.

[0015] Preferably, an auxiliary mechanism is provided in the column, and the auxiliary mechanism includes a mounting groove opened in the column, and two opening grooves are symmetrically opened on the side wall of the mounting groove, and the opening grooves are connected to the oil tank.

[0016] Preferably, the auxiliary mechanism also includes a fixed tube fixedly connected to the top wall of the mounting groove, the fixed tube is provided with an opening opening downward, a movable tube is slidably connected to the fixed tube, a sliding ring is fixedly sleeved at the bottom end of the movable tube, the sliding ring is slidably connected to the inner wall of the mounting groove, a hydraulic oil pipe is provided in communication with the bottom wall of the mounting groove, two solenoid valves are symmetrically provided at the top end of the fixed tube, and the solenoid valves pass through the open groove and are connected to the oil tank.

[0017] Specifically, during use, when the pressure in the oil tank needs to be increased, the solenoid valve is opened, and oil is supplied to the bottom of the installation groove through the hydraulic oil pipe. Under the action of the hydraulic oil, the sliding ring moves upward, and the sliding ring drives the moving pipe to move upward. The moving pipe presses the gas in the fixed pipe outward through the solenoid valve, so that the pressure in the oil tank increases. When the pressure in the oil tank reaches a certain level, the solenoid valve is closed and the oil supply to the hydraulic oil pipe is stopped. When the pressure in the oil tank needs to be reduced, the solenoid valve is opened and the hydraulic oil in the installation groove is pumped out through the hydraulic oil pipe. The sliding ring drives the moving pipe to move downward, and the moving pipe pumps part of the gas in the oil tank into the fixed pipe through the solenoid valve. When the pressure in the oil tank reaches a certain level, the solenoid valve is closed and the pumping of oil from the hydraulic oil pipe is stopped.

[0018] By setting up the auxiliary mechanism, the pressure in the oil tank can be assisted to be adjusted by moving the movable tube up and down. When the pressure regulating unit in the oil tank assembly fails, the pressure in the oil tank can be maintained to a certain extent.

[0019] Furthermore, the solenoid valve is a prior art, and the hydraulic oil pipe is connected to a hydraulic pump, which is a prior art and will not be described in detail.

[0020] Preferably, an explosion-proof component is provided in the movable tube, and the explosion-proof component includes a receiving groove opened in the movable tube, a push plate is slidably connected in the receiving groove, a flame retardant is provided between the upper side of the push plate and the receiving groove, and a nozzle is provided at the top of the receiving groove.

[0021] Preferably, the explosion-proof component also includes an oil inlet opened on the bottom wall of the accommodating groove, a mounting ring is fixedly connected to the inner wall of the accommodating groove, the mounting ring is located at the lower side of the push plate, a baffle is provided on the lower side of the mounting ring, two first springs are symmetrically connected between the mounting ring and the baffle, a second spring is connected between the push plate and the top wall of the accommodating groove, and the top end of the movable tube can abut against the solenoid valve.

[0022] Preferably, the explosion-proof component also includes a fixed plate fixedly connected to the top wall of the accommodating groove, a partition is slidably connected in the nozzle, a third spring is connected between the partition and the fixed plate, and an abutment rod is fixedly connected to the top wall of the fixed tube, the abutment rod can be inserted into the nozzle, the abutment rod can abut against the partition, and the diameter of the abutment rod is smaller than the diameter of the nozzle.

[0023] The beneficial effects of the present invention are:

[0024] 1. The setting of the end support column and the middle support column improves the supporting strength of the fuel tank, thereby improving the deformation resistance of the fuel tank, avoiding the deformation of the fuel tank under long-term use and high-pressure environment, and ensuring the normal driving of the vehicle.

[0025] 2. By setting the mounting plate, the contact area between the support column and the fuel tank is increased, the connection strength is increased, and the upper and lower surfaces of the fuel tank are connected and stretched through the column, so that the support column has a better supporting effect on the fuel tank and the connection is more stable.

[0026] 3. By setting the mounting groove, the weight of the column is reduced, while ensuring a certain degree of supporting capacity of the support column, which facilitates the lightweight design of the entire vehicle.

[0027] 4. Through the setting of the auxiliary mechanism, the pressure in the oil tank can be assisted to adjust by moving the moving pipe up and down. When the pressure regulating unit in the oil tank assembly fails, the pressure of the oil tank can be maintained to a certain extent.

[0028] 5. Through the setting of explosion-proof parts, the gasoline flame retardant in the mobile tube can be mixed with the gasoline in the fuel tank when a car accident occurs, reducing the possibility of fuel tank combustion during collision and improving the safety of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0030] Figure 2 It is a top view of the present invention.

[0031] Figure 3 It is a schematic diagram of the three-dimensional structure of the end support column of the present invention.

[0032] Figure 4 It is a schematic diagram of the internal structure of the end support column of the present invention.

[0033] Figure 5 For the present invention Figure 3 Right view of .

[0034] Figure 6 For the present invention Figure 5 Isometric section view at AA.

[0035] Figure 7 For the present invention Figure 6 A partial enlarged view of point B in the middle.

[0036] Figure 8 For the present invention Figure 6 A partial enlarged view of point C in the middle.

[0037] Fig. 9 For the present invention Figure 3 main view.

[0038] Fig.10 For the present invention Fig. 9 Isometric section view of the DD.

[0039] In the figure:

[0040] 1. Oil tank; 2. End support column; 21. Column; 22. Mounting plate;

[0041] 3. Auxiliary mechanism; 31. Mounting groove; 32. Opening groove; 33. Fixed pipe; 34. Moving pipe; 35. Sliding ring; 36. Hydraulic oil pipe; 37. Solenoid valve; 38. Explosion-proof part; 381. Accommodating groove; 382. Push plate; 383. Spout; 384. Oil inlet; 385. Mounting ring; 386. Baffle; 387. First spring; 388. Second spring; 389. Fixed plate; 390. Partition plate; 391. Third spring; 392. Abutment rod;

[0042] 4. Middle support column. DETAILED DESCRIPTION

[0043] The following will refer to the attached Figures 1 to 10 The embodiments of the present invention are described in detail. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0044] Plastic high pressure fuel tank assembly, as attached Figure 1 , 2 As shown, it includes an oil tank 1, two end support columns 2 are arranged at both ends of the oil tank 1, and three middle support columns 4 are arranged in the middle section of the oil tank 1. The axes of the two end support columns 2 are parallel to the axes of the three middle support columns 4. The three middle support columns 4 are arranged in a triangle, and the two end support columns 2 and the three middle support columns 4 pass through the oil tank 1.

[0045] Specifically, when in use, the end support column 2 supports the end of the fuel tank 1, and the middle support column 4 supports the middle of the fuel tank 1. The end support column 2 and the middle support column 4 cooperate to support the entire fuel tank 1.

[0046] By providing the end support columns 2 and the middle support columns 4, the support strength of the fuel tank 1 is improved, thereby improving the deformation resistance of the fuel tank 1, avoiding deformation of the fuel tank 1 under long-term use and high-pressure environments, and ensuring the normal driving of the vehicle.

[0047] like Figure 2 , 3 As shown, the structure of the end support column 2 is the same as that of the middle support column 4. The end support column 2 includes a column body 21. Both ends of the column body 21 are respectively fixedly connected with circular mounting plates 22. The mounting plates 22 are located on the outside of the oil tank 1. The mounting plates 22 are fixedly connected to the oil tank 1, and the column body 21 passes through the oil tank 1.

[0048] Specifically, when in use, the mounting plate 2 is fixedly connected to the outer side surface of the oil tank 1 , and the column 21 passes through the oil tank 1 .

[0049] By setting the mounting plate 22, the contact area between the support column and the oil tank 1 is increased, the connection strength is increased, and the upper and lower surfaces of the oil tank 1 are connected and stretched through the column, so that the support column has a better supporting effect on the oil tank and the connection is more stable.

[0050] Furthermore, the internal reinforcement support column adopts high-performance engineering materials and uses a secondary injection molding process. The bonding part material is consistent with the fuel tank, so that the bonding part and the fuel tank are perfectly combined. This fuel tank is used for PHEV hybrid models. When the vehicle is running in pure electric mode, the fuel tank is in a closed state, but the oil sloshes in the fuel tank, the ambient temperature and the volatility of gasoline and other factors can easily generate oil vapor, causing the internal pressure of the fuel tank to increase, and the fuel tank will expand outward. At this time, the built-in support column plays the role of holding the fuel tank and preventing deformation. When the vehicle is idling, the oil in the fuel tank will continue to be sucked into the engine, the internal pressure of the fuel tank will decrease, and a certain negative pressure will be generated. At this time, the built-in support column plays the role of preventing the fuel tank from being deflated and deformed.

[0051] like Figure 3 , 6 As shown, the column 21 is provided with an auxiliary mechanism 3 , and the auxiliary mechanism 3 includes a mounting groove 31 provided in the column 21 , and two opening grooves 32 are symmetrically provided on the side wall of the mounting groove 31 , and the opening grooves 32 are connected to the oil tank 1 .

[0052] By providing the mounting groove 31 , the weight of the column 21 is reduced, while ensuring a certain degree of supporting capacity of the support column, thereby facilitating the lightweight design of the entire vehicle.

[0053] like Figure 6 , 7 As shown, the auxiliary mechanism 3 also includes a fixed tube 33 fixedly connected to the top wall of the mounting groove 31, the fixed tube 33 is provided with an opening opening downward, a movable tube 34 is slidably connected in the fixed tube 33, a sliding ring 35 is fixedly sleeved at the bottom end of the movable tube 34, the sliding ring 35 is slidably connected to the inner wall of the mounting groove 31, a hydraulic oil pipe 36 is provided in communication with the bottom wall of the mounting groove 31, and two solenoid valves 37 are symmetrically provided at the top end of the fixed tube 33, and the solenoid valve 37 passes through the opening groove 32 and is connected to the oil tank 1.

[0054] Specifically, during use, when it is necessary to increase the pressure in the oil tank, the solenoid valve 37 is opened, and oil is supplied to the bottom of the installation groove 31 through the hydraulic oil pipe 36. Under the action of the hydraulic oil, the sliding ring 35 moves upward, and the sliding ring 35 drives the moving pipe 34 to move upward. The moving pipe 34 presses the gas in the fixed pipe 33 outward through the solenoid valve 37, so that the pressure in the oil tank 1 increases. When the pressure in the oil tank 1 reaches a certain level, the solenoid valve 37 is closed, and the oil supply to the hydraulic oil pipe 36 is stopped; when it is necessary to reduce the pressure in the oil tank, the solenoid valve 37 is opened, and the hydraulic oil in the installation groove 31 is pumped out through the hydraulic oil pipe 36, the sliding ring 35 drives the moving pipe 34 to move downward, and the moving pipe 34 pumps part of the gas in the oil tank 1 into the fixed pipe 33 through the solenoid valve 37. When the pressure in the oil tank 1 reaches a certain level, the solenoid valve 37 is closed, and the pumping of oil from the hydraulic oil pipe 36 is stopped.

[0055] By setting the auxiliary mechanism 3, the pressure in the oil tank 1 can be assisted to be adjusted by moving the movable tube 34 up and down. When the pressure regulating unit in the oil tank assembly fails, the pressure of the oil tank can be maintained to a certain extent.

[0056] Furthermore, the solenoid valve 37 is of prior art, and the hydraulic oil pipe 36 is connected to a hydraulic pump, which is of prior art and will not be described in detail.

[0057] like Figure 7 , 8 As shown, an explosion-proof component 38 is provided in the movable tube 34, and the explosion-proof component 38 includes a receiving groove 381 opened in the movable tube 34, a push plate 382 is slidably connected in the receiving groove 381, a flame retardant is provided between the upper side of the push plate 382 and the receiving groove 381, and a nozzle 383 is provided at the top of the receiving groove 381.

[0058] Specifically, during use, when the vehicle collides, after the fuel tank is hit, the movable tube 34 moves upward, and the solenoid valve 37 is opened, and the push plate 382 moves upward. The push plate 382 pushes the flame retardant out of the movable tube 34 through the nozzle 383, so that the flame retardant enters the installation groove 31, and then the flame retardant enters the fuel tank 1 through the solenoid valve 37 and mixes with the gasoline in the fuel tank 1.

[0059] By providing the explosion-proof member 38, the gasoline flame retardant in the mobile tube 34 can be mixed with the gasoline in the fuel tank 1 when the fuel tank 1 is hit by a car accident, thereby reducing the possibility of combustion of the fuel tank during the collision and improving the safety of the vehicle.

[0060] like Figure 7 , 10As shown, the explosion-proof component 38 also includes an oil inlet 384 opened on the bottom wall of the accommodating groove 381, a mounting ring 385 is fixedly connected to the inner wall of the accommodating groove 381, the mounting ring 385 is located at the lower side of the push plate 382, ​​a baffle 386 is provided on the lower side of the mounting ring 385, two first springs 387 are symmetrically connected between the mounting ring 385 and the baffle 386, a second spring 388 is connected between the push plate 382 and the top wall of the accommodating groove 381, and the top end of the moving tube 34 can abut against the solenoid valve 37.

[0061] Specifically, during use, the hydraulic oil enters the mounting groove 31 through the hydraulic oil pipe 36, driving the movable tube 34 to move upward. When the top end of the movable tube 34 abuts against the solenoid valve 37, the hydraulic oil pushes the baffle 386 to move upward under the pressure of the hydraulic oil. The baffle 386 compresses the first spring 387, and then the hydraulic oil enters the receiving groove 381. Then, under the action of the hydraulic oil, the push plate 382 is pushed upward, so that the flame retardant in the receiving groove 381 is discharged.

[0062] By setting the baffle 386, the flame retardant can be discharged by supplying oil into the hydraulic oil pipe 36, which has a simple structure and is easy to operate.

[0063] like Figure 8 , 9 As shown in Figure 10, the explosion-proof component 38 also includes a fixing plate 389 fixedly connected to the top wall of the accommodating groove 381, a partition plate 390 is slidably connected in the nozzle 383, a third spring 391 is connected between the partition plate 390 and the fixing plate 389, and an abutment rod 392 is fixedly connected to the top wall of the fixed tube 33, the abutment rod 392 can be inserted into the nozzle 383, the abutment rod 392 can abut against the partition plate 390, and the diameter of the abutment rod 392 is smaller than the diameter of the nozzle 383.

[0064] Specifically, during use, when the movable tube 34 abuts against the solenoid valve 37, the abutment rod 392 is inserted into the nozzle 383, and the abutment rod 392 abuts against the partition 390, causing the partition 390 to move downward, so that the partition 390 compresses the third spring 391 and moves out of the nozzle 383, and then the push plate 382 moves upward so that the flame retardant in the receiving groove 381 is sprayed out through the nozzle 383.

[0065] By providing the abutment rod 392 and the partition plate 390 , when the movable tube 34 moves to the uppermost side, the nozzle 383 can be opened to facilitate the spraying of the flame retardant.

[0066] It should be noted that in the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0067] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0068] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. Plastic high pressure fuel tank assembly, characterized in that: The oil tank (1) comprises two end support columns (2) at both ends of the oil tank (1), three middle support columns (4) at the middle section of the oil tank (1), the axes of the two end support columns (2) are parallel to the axes of the three middle support columns (4), the three middle support columns (4) are arranged in a triangular shape, and the two end support columns (2) and the three middle support columns (4) penetrate the oil tank (1); The structure of the end support column (2) is the same as that of the middle support column (4), the end support column (2) comprises a column body (21), both ends of the column body (21) are respectively fixedly connected with a circular mounting plate (22), the mounting plate (22) is located outside the oil tank (1), the mounting plate (22) is fixedly connected to the oil tank (1), and the column body (21) passes through the oil tank (1); An auxiliary mechanism (3) is provided in the column (21), and the auxiliary mechanism (3) comprises a mounting groove (31) provided in the column (21), two opening grooves (32) are symmetrically provided on the side wall of the mounting groove (31), and the opening grooves (32) are communicated with the oil tank (1); The auxiliary mechanism (3) further comprises a fixed tube (33) fixedly connected to the top wall of the mounting groove (31), the fixed tube (33) being provided with an opening opening downwardly, the fixed tube (33) being slidably connected with a movable tube (34), the bottom end of the movable tube (34) being fixedly sleeved with a sliding ring (35), the sliding ring (35) being slidably connected with the inner wall of the mounting groove (31), the bottom wall of the mounting groove (31) being connected with a hydraulic oil pipe (36), the top end of the fixed tube (33) being symmetrically connected with two solenoid valves (37), the solenoid valves (37) passing through the opening groove (32) and being connected with the oil tank (1).

2. The plastic high pressure fuel tank assembly according to claim 1, characterized in that: An explosion-proof component (38) is provided in the movable tube (34), and the explosion-proof component (38) includes a receiving groove (381) opened in the movable tube (34), a push plate (382) is slidably connected in the receiving groove (381), a flame retardant is provided between the upper side of the push plate (382) and the receiving groove (381), and a nozzle (383) is provided at the top of the receiving groove (381).

3. The plastic high pressure fuel tank assembly according to claim 2, characterized in that: The explosion-proof component (38) also includes an oil inlet (384) opened on the bottom wall of the accommodating groove (381); a mounting ring (385) is fixedly connected to the inner wall of the accommodating groove (381); the mounting ring (385) is located at the lower side of the push plate (382); a baffle (386) is arranged at the lower side of the mounting ring (385); two first springs (387) are symmetrically connected between the mounting ring (385) and the baffle (386); a second spring (388) is connected between the push plate (382) and the top wall of the accommodating groove (381); and the top end of the moving tube (34) can abut against the solenoid valve (37).

4. The plastic high pressure fuel tank assembly according to claim 3, characterized in that: The explosion-proof component (38) further comprises a fixing plate (389) fixedly connected to the top wall of the accommodating groove (381); a partition plate (390) is slidably connected in the nozzle (383); a third spring (391) is connected between the partition plate (390) and the fixing plate (389); an abutment rod (392) is fixedly connected to the top wall of the fixed tube (33); the abutment rod (392) can be inserted into the nozzle (383); the abutment rod (392) can abut against the partition plate (390); and the diameter of the abutment rod (392) is smaller than the diameter of the nozzle (383).

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