Flammable liquid storage tank

Abstract

The application provides a flammable liquid storage tank, belonging to the technical field of liquid tank trucks, which comprises a tank body, a semitrailer arranged below the tank body, a reflux plate arranged inside the tank body along the length direction of the tank body, a plurality of groups of reflux grooves arranged on both sides of the reflux plate, a first reflux block and a second reflux block respectively arranged in the plurality of groups of reflux grooves, and a liquid channel formed by the first reflux block and the second reflux block, wherein the liquid channel is formed by a cut-in section and a reflux section; the reflux plate is arranged inside the tank body, the liquid channel is arranged on the reflux plate, the flow direction of liquid is guided by the reflux section in the liquid channel, the liquid collides with the liquid flowing forward, so that the liquid is buffered, the impact force of the liquid on the tank body is weakened, and damage to the tank body is avoided.

Description

Technical Field

[0001] This invention belongs to the field of liquid tanker technology, specifically relating to flammable liquid storage tanks. Background Technology

[0002] Tank trucks are primarily used to transport liquid foods, oils, chemicals, and other atmospheric-pressure liquids. Currently, with increasing national safety regulations in China, a tripartite accountability system is in place for overloading, and standard-load transportation is the norm. Customers are increasingly demanding lightweight vehicles. The tank, as the carrier for storing and transporting the medium, is the most crucial component of a tank truck. The structure and arrangement of the internal anti-surge baffles directly determine the tank's lightweight level, strength, and wave-damping performance.

[0003] Chinese patent CN212830544U discloses a tank truck with a fully movable baffle plate, including a tank shell, at least one annular connecting plate, and a ring-shaped structure adjacent to the inner wall of the tank shell. An annular liner is also provided between the tank shell and the annular connecting plate. Multiple baffle plates are evenly fixed to the side of the annular connecting plate from top to bottom, forming multiple strip-shaped flow holes along the fluid flow direction. A flange is provided at the inner end of the annular connecting plate, making the cross-section of the overall structure formed by the annular connecting plate and the annular liner T-shaped. Baffle plates at the same position on adjacent annular connecting plates are staggered. The patent also includes a reinforcing plate fixed to the lower end of the annular connecting plate and connected to the corresponding annular liner. This design effectively improves the vehicle's lightweight level, reduces the impact of liquid on the tank, and increases the tank's strength.

[0004] In this design, the shape of the baffle plate is adapted to the cross-section of the tank. During emergency braking, the liquid directly impacts one side of the baffle plate. Since the baffle plate is usually welded to the inner wall of the tank, repeated liquid impact loads can easily cause it to deform, and even lead to fatigue fracture at the welded joints. Summary of the Invention

[0005] The purpose of this invention is to provide a flammable liquid storage tank, which aims to solve the problem that in the prior art, the baffle plate is prone to deformation and breakage when it is repeatedly subjected to liquid impact loads during transportation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a flammable liquid storage tank, comprising: a tank body, a semi-trailer disposed below the tank body, a return plate disposed inside the tank body along the length of the tank body, multiple sets of return grooves disposed on both sides of the return plate, a first return block and a second return block disposed in the multiple sets of return grooves respectively, forming a liquid channel, the liquid channel being composed of an inlet section and a return section, the inlet section being inclined to facilitate the liquid entering the interior of the liquid channel, the return section being arc-shaped to guide the liquid to flow towards the rear of the vehicle and to allow the liquid to be discharged from the liquid channel, when the liquid inside the tank body surges forward due to inertia, the return section can counteract the liquid flowing out of the liquid channel with the forward-surging liquid.

[0007] A further technical solution of the present invention is that an annular seat is provided at one end of the tank body near the front of the vehicle, a sliding column is provided on the annular seat, the axis of which is perpendicular to the axis of the tank body, a slider is slidably provided on the sliding column, a first elastic element is provided on the sliding column to move the slider towards the middle of the tank body, a first connecting rod is hinged to the slider, a fixed seat is hinged at the end of the first connecting rod away from the slider, a buffer plate is installed on the fixed seat that can slide inside the tank body along the axial direction of the tank body, the buffer plate is coaxially arranged with the tank body, and when the buffer plate moves closer to the front of the vehicle, the slider slides and squeezes the first elastic element.

[0008] A further technical solution of the present invention is that the first reflux blocks are located on opposite sides of the two reflux plates, and a slide rail is provided on the tank body along the radial direction of the tank body. The first reflux blocks slide on the slide rail, and a second connecting rod is hinged to the first reflux blocks. The end of the second connecting rod away from the first reflux blocks is hinged to the reflux plate. When the reflux plate moves along the axial direction of the tank body, the second connecting rod can push the first reflux blocks to slide towards the middle of the tank body.

[0009] A further technical solution of the present invention is that the second reflux block is located on the side of the reflux plate near the inner side wall of the tank. An installation column extending towards the middle of the tank is fixedly installed on the side wall of the tank. The second reflux block is slidably installed on the installation column. A second elastic element is provided on the installation column to push the second reflux block closer to the reflux plate. A wedge is provided on the side of the reflux groove located in the cutting section. The second reflux block abuts against the wedge through the second elastic element. When the reflux plate moves towards the front of the vehicle, under the action of the wedge, the second reflux block can be pushed to slide on the installation column and move away from the reflux groove.

[0010] A further technical solution of the present invention is that the buffer plate includes a frame and a water-passing plate, which are fixedly connected to the frame. The outer edge of the water-passing plate frame is in contact with the inner side wall of the tank. The water-passing plate is a plate with multiple through holes on its surface. The through holes allow the chambers on the left and right sides of the buffer plate to communicate with each other, and liquid can enter from one side of the buffer plate to the other side through the through holes.

[0011] A further technical solution of the present invention is that a sliding rod is provided on the annular seat, the sliding rod extends toward the buffer plate and passes through the edge of the buffer plate to the other side of the buffer plate, so that the buffer plate can slide on the sliding rod.

[0012] A further technical solution of the present invention is that a positioning plate is provided on the tank body, the positioning plate is located between two reflux plates, and the two sides of the positioning plate abut against the reflux plates. The side of the reflux plate away from the positioning plate abuts against the reflux plate through a second elastic member and a second reflux block.

[0013] A further technical solution of the present invention is that the reflux plate is detachably mounted on the buffer plate, and the two reflux plates are evenly spaced at a distance of 50cm-100cm.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By installing a reflux plate inside the tank and setting up a liquid channel on the reflux plate, the flow direction of the liquid is guided by the reflux section in the liquid channel, so that the liquid counteracts the forward-flowing liquid, thereby achieving buffering of the liquid, reducing the impact force of the liquid on the tank and avoiding damage to the tank.

[0016] 2. By adjusting the first and second reflux blocks, the flow rate of the liquid in the liquid channel can be adjusted according to the magnitude of the impact force of the internal liquid, thereby achieving different degrees of buffering of the liquid, reducing damage to the tank and improving the service life of the tank. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of a specific embodiment of the present invention;

[0019] Figure 2 This is a cross-sectional view of a specific embodiment of the present invention;

[0020] Figure 3 This is a longitudinal sectional view of a specific embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the buffer unit in a specific embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the recirculation plate in a specific embodiment of the present invention;

[0023] Figure 6This is a schematic diagram of the installation structure of the recirculation plate in a specific embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the cooperation between the second reflux block and the reflux plate in a specific embodiment of the present invention;

[0025] Figure 8 for Figure 2 Enlarged structural diagram at point A;

[0026] Figure 9 This is a schematic diagram of the installation structure of the second return block in a specific embodiment of the present invention.

[0027] In the diagram: 1. Tank; 2. Buffer unit; 21. Buffer plate; 211. Frame; 212. Water flow plate; 22. Annular seat; 23. Sliding column; 24. Sliding block; 25. First connecting rod; 26. Fixed seat; 27. First elastic element; 28. Sliding rod; 3. Recirculation unit; 31. Recirculation plate; 311. Recirculation trough; 32. First recirculation block; 33. Second recirculation block; 34. Liquid channel; 341. Cut-in section; 342. Recirculation section; 35. Slide rail; 36. Second connecting rod; 37. Mounting column; 38. Second elastic element; 39. Wedge block; 4. Semi-trailer; 5. Positioning plate. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-9 The present invention provides the following technical solution: a flammable liquid storage tank, comprising a tank body 1, a buffer unit 2, and a reflux unit 3.

[0030] Both the buffer unit 2 and the return unit 3 are installed inside the tank 1, and the return unit 3 is installed on the buffer unit 2. When there is a sudden stop, due to inertia, the liquid in the tank will rush forward rapidly. During the liquid rushing, the liquid will pass through the return unit 3. The return unit 3 can make some of the liquid flow in the opposite direction of the liquid rushing and flush against the surging liquid in the tank, thereby consuming the impact force of the liquid. Then the surging liquid will impact the buffer unit 2. The buffer unit 2 can buffer the subsequent liquid and prevent the liquid from directly impacting the tank 1 and causing damage to the tank 1.

[0031] The tank 1 has a circular cross-section and is placed horizontally on the semi-trailer 4. The tank 1 is also equipped with a manhole, a liquid inlet, and a liquid outlet (not shown in the figure) for injecting, draining, and maintaining the liquid.

[0032] Please see Figures 1-4 The buffer unit 2 is installed at one end of the tank 1 near the front of the vehicle to prevent liquid from directly impacting one end of the tank 1. The buffer unit 2 includes a buffer plate 21 disposed inside the tank 1. The buffer plate 21 is disc-shaped and is coaxially arranged with the tank 1. The diameter of the buffer plate 21 is the same as the diameter of the cross-section of the tank 1. The buffer plate 21 can slide inside the tank 1 along the axial direction of the tank 1. The buffer plate 21 is composed of a frame 211 and a water-passing plate 212. The outer edge of the frame 211 is attached to the inner sidewall of the tank 1 and slides on the tank 1. The water-passing plate 212 is a plate with multiple through holes on its surface and is fixedly connected to the frame 211. The through holes allow the chambers on the left and right sides of the buffer plate 21 to communicate, and the liquid can enter from one side of the buffer plate 21 to the other side through the through holes.

[0033] An annular seat 22 is provided at one end of the tank body 1 near the front of the vehicle. The annular seat 22 is fixed to the tank body 1 by screws. A circular sliding column 23 is provided on the annular seat 22. The axis of the sliding column 23 is perpendicular to the axis of the buffer plate 21 and intersects with the axis. There are two or more sliding columns 23. In this embodiment, two are used. The middle of the two sliding columns 23 are arranged to cross each other in a cross shape. A slider 24 is slidably provided on each sliding column 23. The slider 24 can slide along the axis of the sliding column 23. A first elastic element 27 is provided on the sliding column 23 to bring the multiple sliders 24 together towards the center. The first elastic element 27 is a compression spring, one end of which is fixed to the slider 24 to abut against it. The other end abuts against the annular seat 22. A first connecting rod 25 is hinged to each slider 24. A fixed seat 26 is hinged to a plurality of first connecting rods 25. The plurality of first connecting rods 25 are inclined. In the natural state, the end of the first connecting rod 25 near the slider 24 is closer to the axis of the buffer plate 21 than the end near the fixed seat 26. The middle part of the buffer plate 21 is fixed to the fixed seat 26 by screws. A sliding rod 28 is provided on the annular seat 22. The sliding rod 28 extends toward the buffer plate 21 and passes through the edge of the buffer plate 21 to the other side of the buffer plate 21, so that the buffer plate 21 can slide on the sliding rod 28.

[0034] When the buffer plate 21 is impacted by liquid, the buffer plate 21 will drive the annular seat 22 to move towards the front of the vehicle, and push the slider 24 to slide on the sliding column 23 through the first connecting rod 25, so that the first elastic element 27 is compressed. Under the action of the first elastic element 27, the impact force of the liquid can be buffered. In addition, since the axis of the sliding column 23 is perpendicular to the axis of the buffer plate 21, part of the impact force of the liquid can be transferred to the side wall of the tank 1, avoiding the impact force from being concentrated at the end of the tank 1 and causing deformation of the end of the tank 1. In addition, the setting of the sliding rod 28 can make the buffer plate 21 slide more stably inside the tank 1.

[0035] Please see Figures 5-8 The reflux unit 3 includes two reflux plates 31 disposed inside the tank body 1. Both reflux plates 31 are rectangular and parallel to the axis of the tank body 1. One end of each reflux plate 31 is mounted on a buffer plate 21 by screws, and the other end extends along the axis of the tank body 1 to the end of the tank body 1 furthest from the vehicle head. Multiple sets of reflux grooves 311 are provided on both sides of the reflux plates 31. A first reflux block 32 and a second reflux block 33 are respectively disposed in the reflux grooves 311 on both sides of the reflux plates 31. The first reflux block 32 is located on one side opposite to the two reflux plates 31. A liquid channel 34 is formed between the first reflux block 32 and the second reflux block 33 and the reflux groove 311. This liquid channel 34 has… The inlet section 341 and the return section 342 are located at the entrance of the liquid channel 34, allowing liquid to easily enter the interior of the liquid channel 34. The return section 342 is located at the outlet of the liquid channel 34, allowing liquid to flow out from the return section 342. The inlet section 341 is inclined and set at an acute angle to the direction of liquid flow, making it easier for liquid to enter the inlet section 341 when it flows towards the front of the vehicle. The return section 342 is arc-shaped, which can guide the liquid to flow into the flowing liquid towards the rear of the vehicle. This allows the liquid flowing out of the return section 342 to counteract the forward flowing liquid, thereby buffering the liquid and reducing the impact force of the liquid on the tank 1.

[0036] Please see Figures 2-6Slide rails 35 are provided on the upper and lower inner walls of the tank body 1 by screws. The sliding direction of the slide rails 35 is set along the radial direction of the tank body 1. The first reflux block 32 slides on the slide rails 35, so that the first reflux block 32 can slide along the radial direction of the tank body 1. In addition, in order to limit the degree of freedom of the first reflux block 32, a slot is provided on the first reflux block 32 and a block is provided on the slide rails 35. Through the cooperation of the slot and the block, the first reflux block 32 can only slide on the slide rails 35, preventing the first reflux block 32 from detaching from the slide rails 35. The second connecting rods 36 are hinged to both ends of the first reflux block 32. The end of the second connecting rod 36 away from the first reflux block 32 is hinged to the reflux plate 31. When the reflux plate 31 moves along the axial direction of the tank body 1, the second connecting rod 36 can push the first reflux block 32 to slide towards the middle of the tank body 1.

[0037] Please see Figure 9 Mounting posts 37 are fixedly installed on both side walls of the tank body 1. The mounting posts 37 extend radially toward the center of the tank body 1. The second reflux block 33 is slidably mounted on the mounting posts 37, allowing the second reflux block 33 to slide along the extension direction of the mounting posts 37. A second elastic element 38, which is a compression spring, is provided on the mounting posts 37 to push the second reflux block 33 closer to the reflux plate 31. One end of the second elastic element 38 is fixed to the second reflux block 33, and the other end is fixed to the inner side wall of the tank body 1. A wedge block 39 is provided on one side of the cutting section 341 within the reflux groove 311 (see [reference]). Figures 6-8 The second return block 33 abuts against the wedge block 39 through the second elastic member 38. When the return plate 31 drives the wedge block 39 to move closer to the front of the vehicle, the wedge block 39 can push the second return block 33 to slide on the mounting post 37 and move the second return block 33 away from the return groove 311.

[0038] During use, in the event of sudden braking, the liquid in tank 1 will rapidly surge towards the front of the vehicle. As the liquid flows towards the front, some of it will flow into liquid channel 34 through inlet section 341, and then out through liquid channel 34 via return section 342. Since return section 342 guides the liquid towards the rear of the vehicle, the liquid flowing out of liquid channel 34 can counteract the surging liquid in tank 1, thus buffering the liquid and reducing its impact on tank 1. The impact force will directly act on the buffer plate 21, and the return plate 31 is installed on the buffer plate 21. Under the action of the liquid impact force, the buffer plate 21 will move the return plate 31 closer to the front of the vehicle. Therefore, when the return plate 31 moves, under the action of the second connecting rod 36, it will move the first return block 32 away from the return groove 311, causing the two first return blocks 32 to move closer to each other, thereby narrowing the liquid flow channel between the two return plates 31. In addition, the first return blocks 32 will also move away from the return groove 311, and the liquid channel 34 will... The increased width allows more liquid to flow into the liquid channel 34 and, guided by the return groove 311, into the liquid flow channel between the two return plates 31. This creates a counterforce against the liquid in the flow channel between the two return plates 31. Therefore, the greater the impact force on the buffer plate 21, the smaller the flow channel between the two return plates 31, and the wider the liquid channel 34 becomes. When the width of the liquid channel 34 increases, the flow rate within it also increases. This increased flow rate results in a greater counterforce and a better buffering effect. When the second return block 33 is far from the return groove 311, according to the same principle, the flow rate of the liquid in the liquid channel 34 is also increased, while the width of the liquid flow channel between the return plate 31 and the inner wall of the tank 1 is reduced. This improves the buffering effect on the liquid. Consequently, this structure can achieve different degrees of buffering of the liquid based on the impact force of the liquid inside the tank 1, thereby reducing damage to the tank 1 and increasing its service life.

[0039] Please see Figure 3 Positioning plates 5 are provided on the upper and lower inner walls of the tank body 1. The positioning plates 5 are located between the two return plates 31, and the two sides of the positioning plates 5 abut against the return plates 31. The side of the return plate 31 away from the positioning plates 5 is pushed by the second elastic member 38 to make the second return block 33 abut against the side wall of the return channel 311. Through the cooperation of the second elastic member 38, the second return block 33 and the positioning plates 5, the distance between the two return plates 31 is fixed, and the return plates 31 are prevented from swinging left and right when the force is uneven.

[0040] The width between the two reflux plates 31 is 50cm-100cm, which is sufficient for workers to enter between the two reflux plates 31 and clean the tank 1. When cleaning the tank 1, the first reflux block 32 and the second reflux block 33 are in their initial positions, located inside the reflux trough 311, which increases the space between the two reflux plates 31 to facilitate the passage of workers. Afterwards, workers can remove the reflux plates 31 from the buffer plate 21 for cleaning, which makes the storage tank easier to clean and reduces the trouble of cleaning.

Claims

1. Flammable liquid storage tanks, including: A tank body (1) is provided with a semi-trailer (4) below it. The tank body (1) is characterized in that a return plate (31) is provided inside the tank body (1) along the length of the tank body (1). Multiple sets of return grooves (311) are provided on both sides of the return plate (31). A first return block (32) and a second return block (33) are respectively provided in the multiple sets of return grooves (311) and form a liquid channel (34). The liquid channel (34) is composed of an inlet section (341) and a return section (342). The inlet section (341) is inclined to facilitate the liquid to enter the interior of the liquid channel (34). The return section (342) is arc-shaped to guide the liquid to flow towards the rear of the vehicle and to allow the liquid to be discharged from the liquid channel (34). When the liquid inside the tank body (1) surges forward by inertia, the return section (342) can counteract the liquid flowing out of the liquid channel (34) with the liquid surging forward. The tank (1) is provided with an annular seat (22) at one end near the front of the vehicle. A sliding column (23) is provided on the annular seat (22), and its axis is perpendicular to the axis of the tank (1). A slider (24) is slidably provided on the sliding column (23). A first elastic element (27) is provided on the sliding column (23) to move the slider (24) toward the middle of the tank (1). A first connecting rod (25) is hinged on the slider (24). A fixed seat (26) is hinged at the end of the first connecting rod (25) away from the slider (24). A buffer plate (21) is installed on the fixed seat (26) to slide along the axial direction of the tank (1) inside the tank (1). The buffer plate (21) is coaxially arranged with the tank (1). When the buffer plate (21) moves toward the front of the vehicle, the slider (24) slides and squeezes the first elastic element (27). The return plate (31) is detachably mounted on the buffer plate (21).

2. The flammable liquid storage tank according to claim 1, characterized in that: The first reflux block (32) is located on one side opposite to the two reflux plates (31). A slide (35) is provided on the tank body (1) in the radial direction of the tank body (1). The first reflux block (32) slides on the slide (35). A second connecting rod (36) is hinged on the first reflux block (32). The end of the second connecting rod (36) away from the first reflux block (32) is hinged on the reflux plate (31). When the reflux plate (31) moves along the axial direction of the tank body (1), the second connecting rod (36) can push the first reflux block (32) to slide towards the middle of the tank body (1).

3. The flammable liquid storage tank according to claim 2, characterized in that: The second reflux block (33) is located on the side of the reflux plate (31) near the inner wall of the tank body (1). A mounting post (37) extending towards the middle of the tank body (1) is fixedly installed on the side wall of the tank body (1). The second reflux block (33) is slidably installed on the mounting post (37). A second elastic element (38) is provided on the mounting post (37) to push the second reflux block (33) closer to the reflux plate (31). A wedge (39) is provided on one side of the cut-in section (341) in the reflux groove (311). The second reflux block (33) abuts against the wedge (39) through the second elastic element (38). When the reflux plate (31) moves towards the front of the vehicle, the wedge (39) can push the second reflux block (33) to slide on the mounting post (37) and move the second reflux block (33) away from the reflux groove (311).

4. The flammable liquid storage tank according to claim 1, characterized in that: The buffer plate (21) includes a frame (211) and a water-passing plate (212). The water-passing plate (212) is fixedly connected to the frame (211). The outer edge of the frame (211) is in contact with the inner wall of the tank (1). The water-passing plate (212) is a plate with multiple through holes on its surface. The through holes allow the chambers on the left and right sides of the buffer plate (21) to communicate with each other, and the liquid can enter from one side of the buffer plate (21) to the other side through the through holes.

5. The flammable liquid storage tank according to claim 4, characterized in that: The annular seat (22) is provided with a slide rod (28) which extends toward the buffer plate (21) and passes through the edge of the buffer plate (21) to the other side of the buffer plate (21), so that the buffer plate (21) can slide on the slide rod (28).

6. The flammable liquid storage tank according to claim 3, characterized in that: The tank body (1) is provided with a positioning plate (5), which is located between two reflux plates (31) and abuts against the two sides of the positioning plate (5) and the reflux plates (31). The side of the reflux plate (31) away from the positioning plate (5) abuts against the reflux plate (31) through the second elastic element (38) and the second reflux block (33).

7. The flammable liquid storage tank according to claim 1, characterized in that: The two reflux plates (31) are spaced 50cm-100cm apart.

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