Lightweight impact-resistant automobile fuel tank

Abstract

The utility model discloses a light-weight impact-resistant automobile fuel tank which comprises a tank body, a carbon fiber reinforced plastic outer layer, a middle damping interlayer and a stainless steel inner layer are sequentially arranged on the side wall of the tank body from outside to inside, and a leakage detection sleeve is sleeved outside the tank body. Distributed optical fiber sensors matched with the box body are evenly arranged on the leakage detection sleeve, and one end of the leakage detection sleeve is electrically connected with a control box through a wire. The carbon fiber reinforced plastic outer layer and the like are arranged, so that the structure of the device is optimized, and the box body is arranged to be a composite structure body composed of the carbon fiber reinforced plastic outer layer, the middle damping interlayer made of butyl rubber and the stainless steel inner layer, so that compared with a common single metal or plastic structure, the structure is simple and convenient. The overall weight of the box body is reduced, the structural strength and impact resistance of the box body are improved, and the device has the advantages of being light in weight and resistant to impact and is convenient to popularize.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile fuel tank, concretely to a light weight impact resistant automobile fuel tank. BACKGROUND

[0002] The automobile fuel tank is a device for storing automobile fuel, and can be divided into different types according to the material used. The traditional metal fuel tank is solid but heavy, while the plastic fuel tank is widely used because it is lighter and more corrosion resistant. However, such automobile fuel tanks have deficiencies in impact resistance, and the current automobile fuel tank also has other defects that need to be optimized.

[0003] As disclosed in the application No. 200720114038.7, a kind of automobile fuel tank belongs to the technical field of automobile fuel supply system, solve the existing automobile fuel tank because of the consumption of fuel in it and cause its internal formation auxiliary pressure, easy to make fuel tank deformation, fuel pump to engine oil supply inconvenient problem, the technical scheme adopted is a kind of automobile fuel tank, characterized by being provided with pressure balance device on the tank body, the pressure balance device one-way communicates the inside and outside of tank body;However, it still has the problem of single shell wall material, which leads to the lack of light weight impact resistance, and cannot fully meet the needs of consumers, and its safety is not high, without leakage early warning structure, cannot timely monitor and early warn the leakage of tank body, based on this, we propose a new light weight impact resistant automobile fuel tank. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a light weight impact resistant automobile fuel tank to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a light weight impact resistant automobile fuel tank, comprising a tank body, the side wall of the tank body is sequentially provided with a carbon fiber reinforced plastic outer layer, an intermediate damping interlayer and a stainless steel inner layer from outside to inside, a leakage detection sleeve is sleeved on the outside of the tank body, a distributed optical fiber sensor matched with the tank body is uniformly arranged on the leakage detection sleeve, a control box is electrically connected to one end of the leakage detection sleeve through a wire, a circuit board is installed in the control box, a central processing module, a wireless signal transceiver module and an alarm are sequentially installed on the circuit board, a first bellows expansion joint and a second bellows expansion joint are respectively connected to the two sides of the top of the tank body, and a limiting seat matched with the first bellows expansion joint and the second bellows expansion joint is arranged on the top of the tank body.

[0006] Preferably, the thickness of the carbon fiber reinforced plastic outer layer is 3mm, the thickness of the intermediate damping interlayer is 1.5mm, and the thickness of the stainless steel inner layer is 0.8mm.

[0007] Preferably, the material of the intermediate damping interlayer is butyl rubber.

[0008] Preferably, the top of the box body is provided with an integrated seat, which is in communication with the interior of the box body.

[0009] Preferably, the top end of the integrated seat is provided with a spring diaphragm type bidirectional valve.

[0010] Preferably, a filter pipe is threadedly connected to the spring diaphragm type bidirectional valve, and a waterproof and breathable film is arranged in the filter pipe, so that the spring diaphragm type bidirectional valve can be filtered and dustproofed, and the effect of balancing the air pressure inside and outside the air regulating box when the spring diaphragm type bidirectional valve is used is optimized.

[0011] Preferably, the top of the integrated seat is uniformly provided with a threaded mounting port, and a switch ball valve matched with the threaded mounting port is arranged on the integrated seat.

[0012] Compared with the prior art, the light-weight and impact-resistant automobile fuel tank has the following beneficial effects:

[0013] (1) The light-weight and impact-resistant automobile fuel tank is provided with a carbon fiber reinforced plastic outer layer, so that the structure of the device is optimized, the box body is provided with a carbon fiber reinforced plastic outer layer, an intermediate damping interlayer made of butyl rubber, and a stainless steel inner layer to form a composite structure, compared with a common single metal or plastic structure, the overall weight of the box body is reduced, the structural strength and impact resistance of the box body are improved, and the device realizes the advantages of light weight and impact resistance, and is convenient to popularize.

[0014] (2) The light-weight and impact-resistant automobile fuel tank is provided with a box body, so that the performance of the device is optimized, and the user can selectively install a leakage detection sleeve on the box body according to needs, so that the distributed optical fiber sensor on the leakage detection sleeve can be fully attached to the box body for monitoring, specifically, when the box body leaks fuel, the fuel at the leakage point contacts the corresponding distributed optical fiber sensor, which causes a change in the optical signal, and the distributed optical fiber sensor sends a signal to the central processing module, then the alarm can issue a leakage warning, and the wireless signal transceiver module can send the leakage signal and the position of the distributed optical fiber sensor that detects the leakage to the user terminal device, so that the device realizes the functions of real-time leakage monitoring and positioning, is convenient for repair operation, and improves the safety of the device during use.

[0015] (3), the light weight impact resistant automobile fuel tank is provided with the first bellows type expansion joint, so that when the device is used, on one hand, the first bellows type expansion joint and the second bellows type expansion joint are arranged on the tank body, and the first bellows type expansion joint and the second bellows type expansion joint can absorb displacement through elastic deformation of the bellows-shaped tubular element, so that the stress in the tank body is reduced, and the safety of the equipment is protected, specifically, when the fuel is expanded in volume due to the influence of the ambient temperature, the expansion joint structure absorbs the expansion amount through elastic deformation, so that the tank body is prevented from being bulged or broken due to excessive stress, and the first bellows type expansion joint and the second bellows type expansion joint are limited through the limiting seat matched with the first bellows type expansion joint and the second bellows type expansion joint arranged on the top of the tank body, so that the first bellows type expansion joint and the second bellows type expansion joint are prevented from being damaged due to excessive displacement, and on the other hand, the spring diaphragm type two-way valve arranged at the top end of the integrated seat can adjust the internal and external air pressure balance through air inlet and outlet, so that the problem that the internal negative pressure of the existing automobile fuel tank is formed due to consumption of fuel in the tank is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model;

[0017] Figure 2 It is a front view partial section structure schematic diagram of the utility model;

[0018] Figure 3 It is a rear view partial section structure schematic diagram of the leakage detection sleeve of the utility model;

[0019] Figure 4 It is a tank body side wall section structure schematic diagram of the utility model.

[0020] In the drawing: 1, limiting seat; 2, leakage detection sleeve; 3, tank body; 4, spring diaphragm type two-way valve; 5, on-off ball valve; 6, integrated seat; 7, first bellows type expansion joint; 8, threaded mounting port; 9, second bellows type expansion joint; 10, control box; 11, distributed optical fiber sensor; 12, central processing module; 13, alarm; 14, wireless signal transceiver module; 15, circuit board; 16, carbon fiber reinforced plastic outer layer; 17, middle damping interlayer; 18, stainless steel inner layer; 19, filter pipe. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] Please refer to Figures 1-4The utility model provides a kind of embodiment: a kind of lightweight impact-resistant automobile fuel tank, including tank 3, the side wall of tank 3 is sequentially laid with carbon fiber reinforced plastic outer layer 16, intermediate damping interlayer 17 and stainless steel inner layer 18 from outside to inside;

[0023] The thickness of carbon fiber reinforced plastic outer layer 16 is 3mm, the thickness of intermediate damping interlayer 17 is 1.5mm, and the thickness of stainless steel inner layer 18 is 0.8mm;

[0024] The material of intermediate damping interlayer 17 is butyl rubber;

[0025] When using, by the composite structure body that tank 3 is set to carbon fiber reinforced plastic outer layer 16, intermediate damping interlayer 17 of material butyl rubber and stainless steel inner layer 18, compared with common single metal or plastic structure, the overall weight of tank 3 is reduced, and the structural strength and impact resistance of tank 3 are improved, so that the device realizes the advantages of lightweight impact resistance and is convenient for promotion;

[0026] The outside of tank 3 is sleeved with leakage detection sleeve 2, and distributed optical fiber sensors 11 matched with tank 3 are uniformly arranged on leakage detection sleeve 2. One end of leakage detection sleeve 2 is electrically connected with control box 10 through a wire.

[0027] A circuit board 15 is installed in control box 10, and a central processing module 12, a wireless signal transceiver module 14 and an alarm 13 are sequentially installed on the circuit board 15.

[0028] When using, the user selectively sleeves leakage detection sleeve 2 upwards according to needs, so that the distributed optical fiber sensors 11 on leakage detection sleeve 2 can be fully attached to tank 3 for monitoring. Specifically, when tank 3 leaks fuel, the fuel at the leakage point contacts the corresponding distributed optical fiber sensor 11, which causes a change in the optical signal. The distributed optical fiber sensor 11 then sends a signal to the central processing module 12. The alarm 13 can then issue a leakage warning, and the wireless signal transceiver module 14 can send the leakage signal and the position of the distributed optical fiber sensor 11 that detects the leakage to the user's terminal device. This enables real-time monitoring and positioning of the device, which is beneficial for repair operations and improves the safety of the device when in use.

[0029] First corrugated tube expansion joint 7 and second corrugated tube expansion joint 9 are respectively connected to both sides of the top of tank 3, and a limiting seat 1 matched with first corrugated tube expansion joint 7 and second corrugated tube expansion joint 9 is arranged on the top of tank 3.

[0030] An integrated seat 6 is arranged on the top of tank 3, and the inside of integrated seat 6 is connected with tank 3.

[0031] The top end of the integrated seat 6 is provided with a spring diaphragm type bidirectional valve 4;

[0032] The spring diaphragm type bidirectional valve 4 is threadedly connected with a filter pipe 19, and the inside of the filter pipe 19 is provided with a waterproof air-permeable film, so that the spring diaphragm type bidirectional valve 4 can be filtered and protected from dust, and the effect of balancing the air pressure inside and outside the air regulating box 3 is optimized.

[0033] The top of the integrated seat 6 is uniformly provided with a threaded mounting port 8, and the integrated seat 6 is provided with a switch ball valve 5 matched with the threaded mounting port 8.

[0034] In use, the integrated seat 6 is arranged on the top of the box 3 in communication with the box 3, and the threaded mounting port 8 with the switch ball valve 5 is arranged on the integrated seat 6, so that the fuel filling port, the filter, the fuel pump and the oil level sensor are assembled on the top of the box 3 in an integrated manner, which is convenient for maintenance and replacement, and improves the flexibility of the structure.

[0035] The embodiment of the application in use: first, by setting a communication with the integrated seat 6 on the top of the box 3, and setting a threaded mounting port 8 with a switch ball valve 5 on the integrated seat 6, the fuel filler, filter, fuel pump and oil level sensor these functional accessories are integrated and assembled on the top of the box 3, which is convenient for maintenance and replacement, improves the flexibility of the structure, at the same time, by setting the box 3 as a composite structure composed of a carbon fiber reinforced plastic outer layer 16, a middle damping layer 17 made of butyl rubber and a stainless steel inner layer 18, compared with the common single metal or plastic structure, the overall weight of the box 3 is reduced, and the structural strength and impact resistance of the box 3 are improved, so that the device realizes the advantages of lightweight and impact resistance, and is easy to popularize. In specific operation, the user selects the leakage detection sleeve 2 to be fitted on the box 3 according to the demand, so that the distributed optical fiber sensor 11 on the leakage detection sleeve 2 can be fully attached to the box 3 for monitoring. Specifically, when the box 3 has a fuel leakage problem, the fuel at the leakage point contacts the corresponding distributed optical fiber sensor 11, which will cause a change in the optical signal. The distributed optical fiber sensor 11 sends a signal to the central processing module 12, which can then send a leakage warning through the alarm 13, and can also use the wireless signal transceiver module 14 to send the leakage signal and the position of the distributed optical fiber sensor 11 that detects the leakage to the user's terminal device, which enables the device to realize real-time monitoring and positioning of leakage, facilitating repair operations and improving the safety of the device in use. In addition, by adding the first bellows expansion joint 7 and the second bellows expansion joint 9 on the box 3, the first bellows expansion joint 7 and the second bellows expansion joint 9 can absorb displacement through the elastic deformation of their corrugated tubular elements, thereby reducing the internal stress of the box 3 and protecting the safety of the equipment. Specifically, when the fuel expands in volume due to environmental temperature, the expansion joint structure absorbs the expansion amount through elastic deformation, avoiding the box 3 from being subjected to excessive stress and bulging or rupturing. Moreover, by setting a limiting seat 1 on the top of the box 3 that matches the first bellows expansion joint 7 and the second bellows expansion joint 9, the first bellows expansion joint 7 and the second bellows expansion joint 9 can be limited and prevented from excessive displacement that causes damage. Furthermore, the spring diaphragm type two-way valve 4 set at the top of the integrated seat 6 can adjust the internal and external air pressure balance by entering and exiting air, solving the problem of negative pressure in the existing automobile fuel tank due to the consumption of fuel inside.

Claims

1. A lightweight, impact-resistant automotive fuel tank characterized by, The application relates to a leakage detection device for a liquefied gas tank, which comprises a tank body (3), the side wall of the tank body (3) is sequentially provided with an outer layer (16) of carbon fiber reinforced plastic, a middle damping interlayer (17) and an inner layer (18) of stainless steel from outside to inside, the tank body (3) is externally sleeved with a leakage detection sleeve (2), the leakage detection sleeve (2) is uniformly provided with distributed optical fiber sensors (11) matched with the tank body (3), one end of the leakage detection sleeve (2) is electrically connected with a control box (10) through a wire, the control box (10) is internally provided with a circuit board (15), the circuit board (15) is sequentially provided with a central processing module (12), a wireless signal transceiving module (14) and an alarm (13), the two sides of the top of the tank body (3) are respectively connected with a first corrugated pipe expansion joint (7) and a second corrugated pipe expansion joint (9), and the top of the tank body (3) is provided with a limiting seat (1) matched with the first corrugated pipe expansion joint (7) and the second corrugated pipe expansion joint (9).

2. The lightweight, impact-resistant automotive fuel tank of claim 1, wherein: The thickness of the outer layer (16) of carbon fiber reinforced plastic is 3 mm, the thickness of the middle damping interlayer (17) is 1.5 mm, and the thickness of the inner layer (18) of stainless steel is 0.8 mm.

3. The lightweight, impact-resistant automotive fuel tank of claim 1, wherein: The material of the middle damping interlayer (17) is butyl rubber.

4. The lightweight, impact-resistant automotive fuel tank of claim 1, wherein: The top of the tank body (3) is provided with an integrated seat (6) which is communicated with the inside of the tank body (3).

5. The lightweight, impact-resistant automotive fuel tank of claim 4, wherein: The top end of the integrated seat (6) is provided with a spring diaphragm type bidirectional valve (4).

6. The lightweight, impact-resistant automotive fuel tank of claim 5, wherein: The spring diaphragm type bidirectional valve (4) is threadedly connected with a filter pipe (19), and the inside of the filter pipe (19) is provided with a waterproof and breathable film.

7. The lightweight, impact-resistant automotive fuel tank of claim 4, wherein: The top of the integrated seat (6) is uniformly provided with threaded mounting ports (8), and the integrated seat (6) is provided with switch ball valves (5) matched with the threaded mounting ports (8).

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