CN112875068B - An improved liquid tank truck wave-proof board structure and its transport tank - Google Patents

Abstract

The invention relates to an improved liquid tank truck wave-proof board structure and a transport tank thereof, belonging to the field of petroleum liquefied gas transportation, comprising a wave-proof board and a deflector. The wave breaker includes at least one set of transverse wave breakers perpendicular to the axis of the tank body and longitudinal horizontal wave breakers parallel to the axis of the tank body. The wave breaker is located at the upper part of the inner cavity of the tank body, and the longitudinal horizontal wave breaker is inclined to the horizontal direction; compared with the prior art, the present invention optimizes the built-in wave breaker of the tank body of the liquid tanker, so that the liquid tanker can reduce vehicle maintenance during the transportation process. On the premise of satisfying the safety performance of the vehicle, the built-in anti-wave board can limit the flow of liquid and the surging in the event of impact as much as possible, thereby improving the stability of vehicle transportation.

Description

An improved liquid tank truck wave-proof board structure and its transport tank

technical field

The invention relates to the field of petroleum liquefied gas transportation, in particular to a liquid tanker wave-proof board, belonging to the field of liquid wave-proof in a tank, in particular to an improved liquid tanker wave-proof board structure and a transport tank thereof.

Background technique

The liquid tank truck is a vehicle for transporting oil materials. The tank body is generally made of carbon steel plates. The transportation tank of the liquid tank truck is generally equipped with a wave breaker to reduce the fluctuation and impact of the liquid inside the tank body and improve the driving stability of the tank truck. sex.

The function of the wave breaker is to ensure that the impact of the liquid on the cylinder can be minimized, and at the same time: 1. It can not generate vacuum and internal pressure when the liquid is filled and unloaded, that is, there must be a gas-phase balance vent on the top; 2. . Ensure that the liquid can be completely unloaded, that is, there must be a liquid hole at the bottom for the liquid to flow completely; 3. Ensure that maintenance personnel can easily pass between the tanks in the tank, that is, there must be manholes for maintenance. Under unstable conditions such as bumps and sudden braking, the liquid in the tank will fluctuate due to inertia and impact the non-through hole position of the wave breaker. The wave breaker is used to absorb the kinetic energy of the liquid, and the liquid with reduced kinetic energy flows through the through hole. In order to achieve the purpose of improving the stability of the liquid in the tank, however, the existing liquid tank truck only has a transverse wave breaker on the tank, so the kinetic energy of the liquid in the tank when shaking can only be reduced by the impact with the transverse wave breaker. The solution will have a great impact on the wave-proof board and the head, and the long-term alternating impact force puts forward great requirements on the strength of the head and the wave-proof board, so that the wave-proof board has to be thickened in the design. In order to meet the requirements, the weight of the tank is increased, and the transportation efficiency is reduced. Secondly, the residual kinetic energy of the liquid in the tank after the collision with the anti-wave board during braking will cause the liquid to swell upwards, resulting in curling waves, which reduces the stability of the tanker. It is not conducive to the safety of liquid tanker transportation. It can be seen that a new type of wave-proof board is improved, which can reduce the curb weight of the vehicle to the greatest extent while meeting the strength of the wave-proof board, and at the same time, it can also suppress the liquid surging, reduce the impact, and improve the stability of the liquid during the transportation of the vehicle. It is very necessary to improve the safety performance of the vehicle.

Based on the above content, an improved liquid tank truck wave-proof board structure and its transport tank are proposed.

SUMMARY OF THE INVENTION

The purpose of the present invention is to optimize the built-in wave breaker of the tank body of the liquid tanker, so that the built-in wave breaker can limit the flow and occurrence of liquid as much as possible on the premise of reducing the vehicle curb weight and satisfying the safety performance of the vehicle during the transportation of the liquid tanker. The surge during impact, thereby improving the stability of vehicle transportation.

The present invention realizes above-mentioned purpose through following technical scheme:

An improved wave-proof board structure for a liquid tank truck includes a wave-proof board and a deflector, both of which are fixedly connected with the inner wall of the tank, and the wave-proof board includes at least one set of transverse anti-wave plates perpendicular to the axis of the tank body. A wave board and a longitudinal horizontal wave breaker parallel to the axis of the tank body, the deflectors are divided into two groups, which are respectively located on both sides of the longitudinal horizontal wave breaker.

As a further optimized solution of the present invention, the number of the transverse wave-proof boards is three groups.

As a further optimized solution of the present invention, the longitudinal horizontal wave breaker is located at the upper part of the inner cavity of the tank body, and the longitudinal horizontal wave breaker is inclined to the horizontal direction.

As a further optimized solution of the present invention, the height H of the longitudinal horizontal wave breaker from the bottom end of the transport tank is between 0.6D and 0.9D, and D is the inner diameter of the transport tank, the same below, and the horizontal inclination angle α is 2° to 5° °, the longitudinal horizontal wave breaker is specifically a rectangular steel plate, the length of the longitudinal horizontal wave breaker is the same as the length of the tank, the width L1 is between _0.6D and _0.7D , and the thickness L2 is 3mm to 6mm.

As a further optimized solution of the present invention, a plurality of groups of circular diversion holes are provided on the longitudinal horizontal wave breaking board, which are distributed in a uniform lattice on the longitudinal horizontal wave breaking board.

As a further optimized solution of the present invention, the diameter D ₁ of the guide holes is 0.005D to 0.015D, and the distance L ₃ between the guide holes along the width direction of the longitudinal horizontal wave board is 0.2D to 0.3D. The distance L4 between the guide holes in the longitudinal direction of the longitudinal horizontal wave breaker is _0.2D˜0.5D .

As a further optimized solution of the present invention, the deflector is arc-shaped in the transverse direction, the arc radius R ₁ is 0.05D-0.15D, the arc central angle β is 30°-60°, and the length is the same as that of the longitudinal horizontal wave breaker. Similarly, the thickness L5 is ₃ mm to 6 mm.

As a further optimized solution of the present invention, both ends and one end of the deflector are welded to the two ends of the transport tank, and the other end of the deflector extends below the longitudinal horizontal wave breaker.

As a further optimized solution of the present invention, the overlapping length L ₆ of the other side end of the deflector and the longitudinal horizontal wave breaker is 0.005D to 0.015D, and the distance between the other side end of the deflector and the longitudinal horizontal wave breaker is 0.005D to 0.015D. The pitch _L7 is 0.002D to 0.005D.

An improved liquid tank truck transport tank includes a tank body, including a tank body and a wave-proof board structure, the wave-proof board structure is the above-mentioned improved liquid tank truck wave-proof board structure.

The beneficial effect of the invention is that the built-in wave-proof board of the tank body of the liquid tanker is optimized, so that the built-in wave-proof board can limit the flow of liquid as much as possible on the premise of reducing the curb weight of the vehicle and satisfying the safety performance of the vehicle during the transportation of the liquid tanker. and surging in the event of an impact, thereby improving the stability of vehicle transportation.

Description of drawings

Fig. 1 is the front view of the tank body and the structure of the anti-wave plate in the improved anti-wave plate structure of the liquid tank truck of the present invention;

Fig. 2 is the structural schematic diagram of the wave breaker and the deflector in the improved liquid tanker wave breaker structure of the present invention;

FIG. 3 is an enlarged schematic view of the point A of FIG. 2 of the present invention.

Fig. 4 is the structural schematic diagram of the anti-wave board in the improved anti-wave board structure of the liquid tank truck of the present invention;

5 is a schematic structural diagram of a transverse wave-proof board in an embodiment of the present invention;

Fig. 6 is the structural schematic diagram of the transverse wave-proof board in the comparative example of the present invention;

Fig. 7 is a graph showing the variation of force of two wave-proof boards with time in the comparative example and the embodiment of the present invention;

Fig. 8 is a three-dimensional sloshing cloud diagram of the liquid of the anti-wave board structure in the embodiment of the present invention;

FIG. 9 is a three-dimensional sloshing cloud diagram of the liquid in the structure of the anti-wave board in the comparative example of the present invention.

Detailed ways

The application will be described in further detail below in conjunction with the accompanying drawings. It is necessary to point out that the following specific embodiments are only used to further illustrate the application, and should not be construed as limiting the protection scope of the application. Those skilled in the art can The above application content makes some non-essential improvements and adjustments to this application.

An improved liquid tank truck transport tank, which contains an improved liquid tank truck wave-proof board structure:

As shown in Figures 1 to 4, an improved liquid tank truck wave breaker structure includes a wave breaker and a deflector. Both the wave breaker and the deflector are fixedly connected to the inner wall of the tank, and the wave breaker includes three groups of perpendicular to the tank axis. There are two sets of baffle plates, which are located on both sides of the longitudinal horizontal wave baffle, and five sets of transverse wave baffles are arranged in the conventional transport tank body. The weight is large, after adding the longitudinal horizontal wave breaker, the transverse wave breaker can be reduced by two groups to reduce the weight of the transport tank.

As shown in Figure 3, the longitudinal horizontal wave breaker is located at the upper part of the inner cavity of the tank body, and the longitudinal horizontal wave breaker is inclined to the horizontal direction. is the inner diameter of the transport tank, the horizontal inclination angle α is 2° to 5°, the longitudinal horizontal wave breaker is specifically a rectangular steel plate, the length of the longitudinal horizontal wave breaker is the same as the length of the tank, and the width L1 is between _0.6D and 0.7D. , the thickness L ₂ is 3mm~6mm, there are multiple groups of circular diversion holes on the longitudinal horizontal wave board, which are evenly distributed on the longitudinal horizontal wave board, and the diversion hole diameter D ₁ is 0.005D ~ 0.015D. The interval distance L3 between the guide holes in the width direction of the longitudinal horizontal wave breaker is 0.2D _{- 0.3D} , and the interval distance L4 between the guide holes along the length direction of the longitudinal horizontal wave breaker is 0.2D～0.5D.

As shown in Figure 4, the deflector is a circular arc in the transverse direction, the arc radius R ₁ is 0.05D~0.15D, the circular arc central angle β is 30°~60°, the length is the same as that of the longitudinal horizontal wave breaker, and the thickness L ₅ is 3mm to 6mm. Both ends and one side of the deflector are welded to the heads at both ends of the transport tank. The other end of the deflector extends below the longitudinal horizontal wave breaker. The other side of the deflector The overlapping length L ₆ of the end and the longitudinal horizontal wave breaker is 0.005D to 0.015D, and the distance L ₇ between the other end of the deflector and the longitudinal horizontal wave breaker is 0.002D to 0.005D.

The invention has a simple structure, and by adding a longitudinal horizontal wave-proof board and two deflectors in the tank body, the kinetic energy generated by the liquid sloshing during the transportation of the liquid tanker can be effectively absorbed by the wave-proof board. With the existence of wave boards, the surging caused by the residual kinetic energy of the liquid when it hits the transverse wave board is also greatly limited. For example, when the liquid level in the tank of the tank truck is lower than the longitudinal horizontal wave board, most of the kinetic energy of the liquid is absorbed by the transverse wave board during braking. , the surging of a small part of the liquid is also blocked by the longitudinal horizontal wave baffle and the deflectors on both sides. Even if a very small part of the liquid enters the upper half of the tank through the diversion hole on the longitudinal horizontal wave baffle, due to the longitudinal horizontal wave baffle At a certain angle, this part of the liquid will also flow back to the bottom along the deflectors on both sides under the action of gravity; when the liquid water level in the tank of the tank truck is higher than the longitudinal horizontal wave breaker, the longitudinal horizontal wave breaker will remove the liquid inside the tank. The liquid is divided into upper and lower parts. The horizontal wave breaker, the vertical horizontal wave breaker and the deflectors on both sides can effectively reduce the interaction between the liquids in each part. The liquid in the lower half is "closed" by the wave breaker, while the liquid in the upper half Because the proportion is small, the impact it produces is also small. Therefore, it can be seen that this solution can prevent large liquid surging in the tank, and can better achieve the function of preventing waves.

Example

There are three sets of common transverse wave-proof boards with the same structure in the tank. The structure of the transverse wave-proof board is shown in Figure 5. The transverse wave-proof board is provided with a circular hole with a diameter of 450mm. When the inner diameter D of the tank is 2300mm, the longitudinal horizontal The height H of the wave breaker from the bottom end of the transport tank is 0.84D, the horizontal inclination angle α is 5°, the width L1 of the longitudinal horizontal _wavebreaker is _0.65D , the thickness L2 is 5mm, and the diameter D1 _of the diversion hole is 0.005D～0.015 D. _The spacing distance L3 between the guide holes along the width direction of the longitudinal horizontal wave board is 0.2D～ _0.3D , and the spacing distance L4 between the guide holes along the length direction of the longitudinal horizontal wave board is 0.2D～0.5D, The arc radius R1 is _0.08D , the arc central angle β is 50°, the thickness L5 is _5mm , the overlapping length L6 is 0.01D, and the spacing _L7 is _0.003D .

Comparative ratio

The same tank body as the embodiment has five sets of transverse wave-proof boards in the tank, and the structure of the middle transverse wave-proof board is the same as that of the embodiment. Composition, the thickness of the horizontal plate is 245mm, and the gap between the horizontal plates is 400mm.

Simulation experiments are carried out on the example and the embodiment. The force of the comparative example (original wave board) and the example (optimized wave board) change with time as shown in Figure 7. It can be seen from the figure that the embodiment is relative to the In contrast, the peak value of the load borne by the wave-proof board has been significantly reduced, and its average stress is also small, and the clockwise impact force peak value brought by the water hammer effect has also been greatly reduced; Example ( The liquid simulation of the optimized wave board) and the comparative example (original wave board) is reflected by the three-dimensional sloshing cloud map of the liquid, as shown in Figures 8 and 9. The presence of a horizontal breakwater board is also limited, enhancing its stability.

The above-mentioned embodiments only represent several embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as limiting the scope of the patent of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention.

Claims (7)

1. An improved liquid tank truck wave-proof board structure is characterized in that, comprising a wave-proof board and a deflector, the wave-proof board and the deflector are both fixedly connected with the inner wall of the tank, and the wave-proof board comprises at least one group of vertical The transverse wave breaker of the tank axis and the longitudinal horizontal wave breaker parallel to the tank axis, the length of the longitudinal horizontal wave breaker is the same as the length of the tank body, the baffles are two groups, which are located on both sides of the longitudinal horizontal wave breaker, respectively. The longitudinal horizontal wave-proof board is located in the upper part of the inner cavity of the tank body, and the longitudinal horizontal wave-proof board is inclined to the horizontal direction. The longitudinal horizontal wave-proof board is provided with a plurality of groups of circular diversion holes, which are evenly distributed in the longitudinal horizontal anti-wave board. wave board; Wherein, the height H of the longitudinal horizontal wave breaker from the bottom end of the transport tank is between 0.6D and 0.9D, D is the diameter of the transport tank, and the horizontal inclination angle α is 2° to 5°. It is a rectangular steel plate, the width L1 is between _0.6D and _0.7D , and the thickness L2 is 3mm to 6mm. 2 . An improved wave-proof board structure for a liquid tank truck according to claim 1 , wherein the number of the transverse wave-proof boards is three groups. 3 . 3. An improved liquid tank truck wave-proof board structure according to claim ₁ , wherein the diversion hole diameter D1 is 0.005D to 0.015D, and the diversion along the width direction of the longitudinal horizontal wave-proof board The spacing distance L ₃ between the holes is 0.2D-0.3D, and the spacing distance L ₄ between the guide holes along the longitudinal direction of the longitudinal horizontal wave breaker is 0.2D-0.5D. 4. An improved liquid tank truck wave-proof board structure according to claim 1, characterized in that, the deflector is in the shape of an arc in the transverse direction, the arc radius R ₁ is 0.05D to 0.15D, and the arc central angle β is 30°～60°, the length is the same as that of the longitudinal horizontal wave _breaker , and the thickness L5 is 3mm～6mm. 5. An improved liquid tank truck wave-proof board structure according to claim 4, characterized in that, both ends and one side end of the deflector are welded on both ends of the transport tank body, and the deflector The other side end of the board extends below the longitudinal horizontal breakwater board. 6. An improved liquid tank truck wave-proof board structure according to claim 5, characterized in that, the overlapping length L6 of the other side end of the deflector and the longitudinal horizontal wave-proof board is _0.005D to 0.015D, The distance L ₇ between the other side end of the deflector and the longitudinal horizontal wave breaker is 0.002D to 0.005D. 7. An improved liquid tank truck transport tank, characterized in that it comprises a tank body and a wave breaker structure, and the wave breaker structure is any one of the improved liquid tanker wave breaker structures in claims 1-6.

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