Stainless steel oil tank with anti-explosion function

By introducing a pressure relief valve and a disc structure into the stainless steel fuel tank, the problem of rapid pressure release inside the tank is solved, enhancing the tank's explosion-proof performance and structural stability, and avoiding the risk of tank explosion.

CN224159795UActive Publication Date: 2026-04-24NANJING TIANHE AUTO PARTS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NANJING TIANHE AUTO PARTS
Filing Date
2025-03-11
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

When the internal pressure of an existing stainless steel fuel tank spikes rapidly, the pressure relief valve cannot quickly release the large amount of pressure, which can easily lead to the tank exploding.

Method used

An explosion-proof unit with a pressure relief valve and a disc structure was designed. The pressure inside the oil tank is quickly released through the cross pressure relief groove of the disc and the oil drain pipe. Combined with the anti-collision plate, rectangular frame and float plate structure, the oil tank's anti-torsion ability and stability are enhanced.

Benefits of technology

It enables rapid depressurization when the internal pressure of the fuel tank increases sharply, preventing the fuel tank from exploding, and improves the safety and stability of the fuel tank through structural reinforcement.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224159795U_ABST
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Abstract

The utility model discloses a stainless steel oil tank with an anti-explosion function, which comprises a storage unit and an anti-explosion unit, the storage unit comprises an oil tank and an oil filling pipe fixedly communicated with the top of the oil tank, the top of the oil filling pipe is provided with a sealing cover, one side of the oil tank is fixedly communicated with an oil discharge pipe, and the pipe wall of the oil discharge pipe is sleeved with a valve; the pressure relief device comprises a pressure relief pipe fixedly communicated with the top of an oil tank, the top of the pressure relief pipe is fixedly communicated with a pressure relief valve, the pressure relief valve is fixedly connected with a barometer, one side of the oil tank is fixedly connected with a straight cylinder, and the inner wall of the straight cylinder is fixedly connected with a protection plate. Redundant pressure in the oil tank can be safely discharged through the pressure relief valve, when the pressure in the oil tank is suddenly increased, the cross-shaped pressure relief groove of the disc can be squeezed, the redundant pressure and fuel oil in the oil tank can be rapidly discharged through the pressure relief pipe, and it is guaranteed that the oil tank body cannot explode.
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Description

Technical Field

[0001] This utility model relates to the field of fuel tank shell technology, and in particular to a stainless steel fuel tank with explosion-proof function. Background Technology

[0002] A stainless steel fuel tank shell is a container structure made of stainless steel to hold fuel. It is usually made of stainless steel sheet through processes such as stamping and bending to form a space with a certain shape and volume to store fuel. Common shapes include cuboids and cylinders. It is usually equipped with a filler cap for adding fuel. The filler cap is equipped with a sealing cap to prevent fuel leakage and impurities from entering. The fuel tank outlet is connected to a fuel delivery pipeline to deliver fuel to designated equipment.

[0003] When impurities, moisture, or other incompatible substances are mixed into the fuel in a stainless steel fuel tank, a chemical reaction may occur, generating heat and gas, which can increase the pressure inside the tank and lead to an explosion. Some fuel tanks are equipped with pressure relief valves or similar structures to maintain pressure balance inside the tank. However, these pressure relief structures can only safely release excess gas when the pressure increases steadily. When the internal pressure of the fuel tank spikes rapidly, the pressure relief valve cannot release a large amount of pressure quickly in a short time, making the fuel tank prone to explosion. Therefore, a stainless steel fuel tank with explosion-proof function is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current stainless steel oil tank with explosion-proof function, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a stainless steel oil tank with explosion-proof function, which is suitable for solving the problem that when the internal pressure of the oil tank rises sharply, the pressure relief valve cannot quickly release a large amount of pressure in a short time, thus making the oil tank prone to direct explosion.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a stainless steel oil tank with explosion-proof function, comprising:

[0008] A storage unit includes an oil tank and a refueling pipe fixedly connected to the top of the oil tank. The top of the refueling pipe is provided with a sealing cap. A drain pipe is fixedly connected to one side of the oil tank. A valve is sleeved on the pipe wall of the drain pipe.

[0009] An explosion-proof unit includes a pressure relief pipe fixedly connected to the top of an oil tank, a pressure relief valve fixedly connected to the top of the pressure relief pipe, a pressure gauge fixedly connected to the pressure relief valve, a straight cylinder fixedly connected to one side of the oil tank, a protective plate fixedly connected to the inner wall of the straight cylinder, a straight pipe fixedly connected to one side of the oil tank inside the straight cylinder, a disc fixedly connected to the end of the straight pipe, a cross-shaped pressure relief groove opened on one side of the disc, and an oil drain pipe fixedly connected to the bottom of the outer wall of the straight cylinder, with a valve sleeved on the wall of the oil drain pipe.

[0010] As a preferred embodiment of the stainless steel oil tank with explosion-proof function described in this utility model, wherein: anti-collision plates are fixedly connected at each opposite corner of the oil tank, and each anti-collision plate is close to the outer wall of the oil tank.

[0011] As a preferred embodiment of the stainless steel oil tank with explosion-proof function described in this utility model, a rectangular frame is fixedly fitted onto the outer wall of the oil tank, and one end of the straight cylinder passes through the rectangular frame.

[0012] As a preferred embodiment of the stainless steel oil tank with explosion-proof function described in this utility model, a straight plate is fixedly connected to the inner wall of the oil tank, and multiple evenly distributed limiting plates are fixedly connected to both sides of the straight plate.

[0013] As a preferred embodiment of the stainless steel oil tank with explosion-proof function described in this utility model, U-shaped rods are fixedly connected to the top and bottom of the inner cavity of the oil tank, and float plates are slidably sleeved on the rod surface of each U-shaped rod, with a gap left between the side wall of each float plate and the inner wall of the oil tank.

[0014] As a preferred embodiment of the stainless steel fuel tank with explosion-proof function described in this utility model, a T-shaped disc is fixedly connected to the top of one of the float plates, and the T-shaped disc is located directly below the refueling pipe.

[0015] The beneficial effects of this utility model are: the pressure relief valve can safely discharge excess pressure in the fuel tank to prevent the fuel tank from exploding. When the pressure in the fuel tank suddenly increases, the cross-shaped pressure relief groove of the disc will be squeezed to release the pressure in the fuel tank through the straight pipe, so that the excess pressure and fuel can be quickly discharged through the pressure relief pipe to ensure that the fuel tank body will not explode. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0017] Figure 1 This is a schematic diagram of the overall structure of the stainless steel fuel tank with explosion-proof function proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the straight tube and disc connection structure proposed in this utility model;

[0019] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the fuel tank proposed in this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 100. Storage unit; 101. Oil tank; 102. Filling pipe; 103. Drain pipe; 104. U-shaped rod; 105. Float; 106. T-shaped disc; 200. Explosion-proof unit; 201. Pressure relief pipe; 202. Pressure relief valve; 203. Pressure gauge; 204. Straight cylinder; 205. Protective plate; 206. Straight pipe; 207. Disc; 208. Cross pressure relief groove; 209. Drain pipe; 210. Anti-collision plate; 211. Rectangular frame; 212. Straight plate; 213. Limiting plate. Detailed Implementation

[0022] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0025] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0026] Example

[0027] Reference Figures 1-3As an embodiment of the present invention, a stainless steel oil tank with explosion-proof function is provided, including: a storage unit 100 and an explosion-proof unit 200;

[0028] The storage unit 100 includes an oil tank 101 and a refueling pipe 102 fixedly connected to the top of the oil tank 101. The top of the refueling pipe 102 is provided with a sealing cap. An oil drain pipe 103 is fixedly connected to one side of the oil tank 101. A valve is sleeved on the pipe wall of the oil drain pipe 103.

[0029] The explosion-proof unit 200 includes a pressure relief pipe 201 fixedly connected to the top of the oil tank 101, a pressure relief valve 202 fixedly connected to the top of the pressure relief pipe 201, a pressure gauge 203 fixedly connected to the pressure relief valve 202, a straight cylinder 204 fixedly connected to one side of the oil tank 101, a protective plate 205 fixedly connected to the inner wall of the straight cylinder 204, a straight pipe 206 located inside the straight cylinder 204 fixedly connected to one side of the oil tank 101, a disc 207 fixedly connected to the end of the straight pipe 206, a cross pressure relief groove 208 opened on one side of the disc 207, and an oil drain pipe 209 fixedly connected to the bottom of the outer wall of the straight cylinder 204, with a valve sleeved on the pipe wall of the oil drain pipe 209.

[0030] The sealing cap is detachable. The fuel filler pipe 102 is used to add fuel to the fuel tank 101. The fuel drain pipe 103 is used to connect to the fuel supply pipe for fuel supply. The pressure gauge 203 can detect the pressure value inside the fuel tank 101. When the internal pressure of the fuel tank 101 increases slowly, the pressure relief valve 202 is used to relieve the pressure to prevent the fuel tank 101 from becoming too high and exploding. There is a gap between the disc 207 and the protective plate 205. The top of the fuel drain pipe 209 is located in this gap. The thickness of the disc 207 is less than the thickness of the fuel tank 101. When the internal pressure of the fuel tank 101 suddenly increases, the pressure will act on the disc 207 through the straight pipe 206, causing the disc 207 to bear a large amount of pressure.

[0031] The pressure that the disc 207 can withstand is less than the pressure that the fuel tank 101 can withstand. When the pressure reaches a certain value, the disc 207 cannot withstand it and will rupture along the cross-shaped pressure relief groove 208 to release the pressure in the fuel tank 101 into the straight cylinder 204. The drain pipe 209 can be connected to an empty fuel tank through a pipeline. The valve of the drain pipe 209 is always open. The excess pressure and fuel in the fuel tank 101 can be transported to the empty fuel tank through the drain pipe 209 to quickly release the pressure in the fuel tank 101 and avoid explosion. When the pressure in the fuel tank 101 stabilizes, the valve of the drain pipe 209 is closed.

[0032] In addition, anti-collision plates 210 are fixedly connected to each opposite corner of the fuel tank 101. Each anti-collision plate 210 is close to the outer wall of the fuel tank 101. A rectangular frame 211 is fixedly fitted to the outer wall of the fuel tank 101, and one end of the straight cylinder 204 passes through the rectangular frame 211.

[0033] The anti-collision plate 210 is used to reinforce the diagonal of the fuel tank 101 to prevent the diagonal of the fuel tank 101 from being bumped and causing safety hazards. The rectangular frame 211 can protect the four side walls of the fuel tank 101 to prevent scratches or bumps on the side walls of the fuel tank 101.

[0034] Furthermore, a straight plate 212 is fixedly connected to the inner wall of the oil tank 101, and multiple evenly distributed limiting plates 213 are fixedly connected to both sides of the straight plate 212.

[0035] Both the straight plate 212 and the limiting plate 213 are located in the middle of the inner cavity of the oil tank 101. The straight plate 212 is used to reinforce the overall structure of the oil tank 101 to improve the torsional resistance of the oil tank 101, so that the oil tank 101 will not undergo large deformation when the internal pressure of the oil tank 101 increases, thereby improving the explosion-proof effect.

[0036] Furthermore, U-shaped rods 104 are fixedly connected to the top and bottom of the inner cavity of the fuel tank 101. Each U-shaped rod 104 has a float 105 slidably sleeved on its surface. There is a gap between the side wall of each float 105 and the inner wall of the fuel tank 101. A T-shaped disc 106 is fixedly connected to the top of one of the floats 105. The T-shaped disc 106 is located directly below the refueling pipe 102.

[0037] The float plate 105 floats on the oil surface by buoyancy. There is a gap between the side wall of each float plate 105 and the inner wall of the fuel tank 101, so that fuel can pass through the float plate 105 and be discharged from the drain pipe 103. When the pressure in the fuel tank 101 is unstable and causes the fuel to shake violently, the bottom of the float plate 105 is subjected to impact forces from multiple directions, making it difficult for the float plate 105 to slide along the U-shaped rod 104. This can suppress the shaking of the oil surface and reduce the impact force of the fuel on the fuel tank 101, thereby reducing the possibility of explosion. The T-shaped plate 106 is located on the top float plate 105. When the fuel in the fuel tank 101 is filled to a specified height, the T-shaped plate 106 rises and abuts against the bottom of the filler pipe 102 to prevent the user from completely filling the fuel tank 101, thereby providing a buffer space for the pressure increase.

[0038] During use, fuel is added to the fuel tank 101 through the fuel filling pipe 102. When the fuel in the fuel tank 101 reaches the designated height, the T-shaped plate 106 floats up through the float plate 105 and abuts against the bottom of the fuel filling pipe 102 to prevent the user from completely filling the fuel tank 101. Then, the drain pipe 209 is connected to an empty fuel tank through the pipeline. The anti-collision plate 210 and the rectangular frame 211 can reduce the impact on the fuel tank 101. The straight plate 212 and the limiting plate 213 can improve the torsional resistance of the fuel tank 101. The pressure gauge 203 can detect the pressure value inside the fuel tank 101. When the internal pressure of the fuel tank 101 slowly increases, the pressure is released through the pressure relief valve 202.

[0039] The float plate 105 can suppress the sloshing of the oil surface. When the pressure in the oil tank 101 reaches a certain value, the disc 207 cannot withstand it and will rupture along the cross pressure relief groove 208 to release the pressure in the oil tank 101 into the straight cylinder 204. The excess pressure and fuel in the oil tank 101 can be transported to the empty oil tank through the drain pipe 209 to quickly release the pressure in the oil tank 101 and avoid explosion. When the pressure in the oil tank 101 stabilizes, the valve of the drain pipe 209 is closed.

[0040] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A stainless steel fuel tank with explosion-proof function, characterized in that, include: Storage unit (100) includes an oil tank (101) and a refueling pipe (102) fixedly connected to the top of the oil tank (101). The top of the refueling pipe (102) is provided with a sealing cap. A drain pipe (103) is fixedly connected to one side of the oil tank (101). A valve is sleeved on the pipe wall of the drain pipe (103). An explosion-proof unit (200) includes a pressure relief pipe (201) fixedly connected to the top of an oil tank (101), a pressure relief valve (202) fixedly connected to the top of the pressure relief pipe (201), a pressure gauge (203) fixedly connected to the pressure relief valve (202), a straight cylinder (204) fixedly connected to one side of the oil tank (101), a protective plate (205) fixedly connected to the inner wall of the straight cylinder (204), a straight pipe (206) located inside the straight cylinder (204) fixedly connected to one side of the oil tank (101), a disc (207) fixedly connected to the end of the straight pipe (206), a cross pressure relief groove (208) opened on one side of the disc (207), and an oil drain pipe (209) fixedly connected to the bottom of the outer wall of the straight cylinder (204), with a valve sleeved on the pipe wall of the oil drain pipe (209).

2. The stainless steel oil tank with explosion-proof function according to claim 1, characterized in that: Each of the opposite corners of the fuel tank (101) is fixedly connected with a crash plate (210), and each crash plate (210) is close to the outer wall of the fuel tank (101).

3. A stainless steel oil tank with explosion-proof function according to claim 2, characterized in that: A rectangular frame (211) is fixedly fitted onto the outer wall of the oil tank (101), and one end of the straight cylinder (204) passes through the rectangular frame (211).

4. A stainless steel oil tank with explosion-proof function according to claim 2, characterized in that: The inner wall of the oil tank (101) is fixedly connected to a straight plate (212), and multiple evenly distributed limiting plates (213) are fixedly connected to both sides of the straight plate (212).

5. A stainless steel oil tank with explosion-proof function according to claim 3, characterized in that: The top and bottom of the inner cavity of the oil tank (101) are fixedly connected with U-shaped rods (104), and each U-shaped rod (104) has a float plate (105) slidably sleeved on its surface. There is a gap between the side wall of each float plate (105) and the inner wall of the oil tank (101).

6. A stainless steel oil tank with explosion-proof function according to claim 5, characterized in that: One of the floats (105) has a T-shaped disc (106) fixedly connected to its top, and the T-shaped disc (106) is located directly below the refueling pipe (102).