Transport vehicle

Abstract

The transport vehicle comprises a tank body and a liquid loading and unloading pipeline, the liquid loading and unloading pipeline comprises a pipeline and an energy collapse connecting piece, the energy collapse connecting piece and the pipeline are connected in series to form a liquid inlet and outlet channel, one end of the liquid inlet and outlet channel is connected with a pipeline connecting opening of the tank body, and the other end of the liquid inlet and outlet channel extends to the outer side of the tank body. And the fluid can enter the tank body or be discharged from the tank body through the liquid loading and unloading pipeline. Wherein the yield strength of the energy collapse connecting piece is smaller than that of the pipeline, and when the transport vehicle is collided, the energy collapse connecting piece deforms before the pipeline and the tank body, so that the energy collapse connecting piece can absorb energy generated by collision, and the purpose of protecting the tank body to prevent liquid in the tank from leaking is achieved. And meanwhile, the fire extinguishing agent stored in the cavity of the part at the impacted part is scattered to cover the impacted part, so that the fire hazard is eliminated from the source.

Description

Technical Field

[0001] The present invention relates to the field of transport vehicles, and particularly to a transport vehicle. Background Art

[0002] The number of transport vehicles for flammable and explosive media exported by our company has been continuously increasing. The sales regions are extensive, and the market demands are diverse and personalized. Facing such a market environment, the diversification of the tank structure functions has become the key to meeting the market demands. Therefore, designing a product that is both safe and meets diverse requirements has become an important issue that needs to be solved urgently.

[0003] In order to facilitate the loading and unloading of flammable and explosive media, the existing loading and unloading system usually sets one end of the pipeline of the loading and unloading system for loading and unloading flammable and explosive media on the outside of the tank structure. When the loading and unloading system is impacted, for example, the tail loading and unloading system is rear-ended or the side loading and unloading system is side-collided. When the loading and unloading system is impacted, the impact force is easily transmitted to the tank structure through the pipeline of the loading and unloading system, resulting in damage to the tank structure, and further easily leading to safety hazards such as leakage of flammable and explosive media inside the tank structure. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that when the loading and unloading system of the existing transport vehicle for flammable and explosive media is impacted, the impact force is easily transmitted to the tank structure through the pipeline of the loading and unloading system, thereby causing damage to the tank structure.

[0005] To solve the above technical problems, the present invention provides a transport vehicle, including a tank and a liquid loading and unloading pipeline. The tank is used for storing fluid, and a pipeline connection port is provided on the tank; the liquid loading and unloading pipeline includes a pipeline and an energy dissipation connector. The energy dissipation connector is connected in series with the pipeline to form an inlet and outlet liquid channel. One end of the inlet and outlet liquid channel is connected to the pipeline connection port of the tank, and the other end extends to the outside of the tank; the yield strength of the energy dissipation connector is less than the yield strength of the pipeline and the tank; when the transport vehicle is impacted, the energy dissipation connector deforms prior to the pipeline and the tank.

[0006] In some embodiments of the present application, a cutting groove is provided on the energy dissipation connector, so that the yield strength of the energy dissipation connector at the position where the cutting groove is provided is less than the yield strength of the pipeline and the tank.

[0007] In some embodiments of the present application, a plurality of pipelines are provided. The plurality of pipelines are arranged at intervals in sequence, and adjacent two pipelines are connected by the energy dissipation connector; the energy dissipation connector is a connecting pipe, and the cutting groove is provided on the side wall of the connecting pipe.

[0008] In some embodiments of the present application, the energy-dissipating connector includes a valve body and a valve core. The valve body is provided with a fluid passage, a first connection port and a second connection port that are respectively communicated with both ends of the fluid passage. The first connection port is connected to the pipeline connection port, the second connection port is connected to the pipeline, and the valve core is movably connected within the fluid passage of the valve body; the cutting groove is provided on the side wall of the valve body and is located between the valve core and the second interface.

[0009] In some embodiments of the present application, the energy-dissipating connector includes a valve body, a valve core and a connecting stud. The valve body is provided with a fluid passage, a first connection port and a second connection port that are respectively communicated with both ends of the fluid passage. The first connection port of the valve body is connected to the pipeline connection port. A first flange is provided on the circumferential outer side of the second connection port of the valve body. One end of the pipeline is provided with a second flange, and the position of the second flange is opposite to that of the first flange. The connecting stud connects the first flange and the second flange; the cutting groove is provided on the circumferential outer surface of the connecting stud and is located between the first flange and the second flange.

[0010] In some embodiments of the present application, the energy-dissipating connector further includes an actuator, which is connected to the valve body and is in transmission connection with the valve core. The actuator is used to control the relative movement of the valve core with respect to the valve body so that the pipeline is communicated with the pipeline connection port.

[0011] In some embodiments of the present application, the yield strength of the material used for the energy-dissipating connector is less than the yield strengths of the pipeline and the tank; and / or the yield strength of the energy-dissipating connector is less than 220 mpa, and the yield strengths of the pipeline and the tank are greater than 220 mpa.

[0012] In some embodiments of the present application, the energy-dissipating connector is a stainless steel pipe fitting, the pipeline is a carbon steel 20# steel pipe or a low alloy 16Mn steel pipe, and the tank is a carbon steel 20# storage tank or a low alloy 16Mn storage tank.

[0013] In some embodiments of the present application, the energy-dissipating connector is provided with a bending portion. When the transport vehicle is impacted, the generated impact force forms a stress concentration at the bending portion, causing the energy-dissipating connector to deform prior to the pipeline and the tank; the energy-dissipating connector is a bent pipe.

[0014] In some embodiments of the present application, the energy-dissipating connector is a flexible member. When the transport vehicle is impacted, the energy-dissipating connector can deform to absorb the generated impact force.

[0015] In some embodiments of the present application, the transport vehicle further includes a valve box and a control valve; the valve box is connected to the tank body or the vehicle body of the transport vehicle, and the yield strength of the valve box is less than that of the energy-absorbing connecting member; the control valve is connected in series at one end of the liquid loading and unloading pipeline away from the pipeline connection port and is located inside the box body, and the control valve is used to control the on-off of the liquid loading and unloading pipeline.

[0016] In some embodiments of the present application, the valve box includes a box body and a support column, the box body is connected to the tank body or the vehicle body of the transport vehicle, and the control valve is located inside the box body; the support column is fixed on the side wall of the box body to enhance the stress strength of the box body; the yield strengths of the support column and the box body are both less than that of the energy-absorbing connecting member.

[0017] In some embodiments of the present application, the support column includes a thin-walled steel column and a first filling layer, the thin-walled steel column is fixed on the side wall of the box body, and a cavity is formed between the thin-walled steel column and the side wall of the box body, and the first filling layer is filled in the cavity; the first filling layer is aluminum foam and / or a fire extinguishing agent.

[0018] In some embodiments of the present application, the box body includes a bottom plate, a box door and a plurality of side plates, the plurality of side plates are connected end to end in sequence to form a ring, the bottom plate and the box door are respectively connected to both sides of the side plates, and the bottom plate, the box door and the plurality of side plates enclose to form a box body with a hollow interior; the side plate includes an inner side plate, an outer side plate and a second filling layer, the inner side plate is arranged inside the outer side plate, and a sandwich layer is formed between the inner side plate and the outer side plate, and the second filling layer is filled in the sandwich layer; the second filling layer is a corrugated plate and / or a fire extinguishing agent; the support column is connected to the outer side plate or the inner side plate.

[0019] As can be seen from the above technical solutions, the beneficial effects of the present invention are as follows: The transport vehicle of the present application includes a tank body and a liquid loading and unloading pipeline. The liquid loading and unloading pipeline includes a pipeline and an energy-absorbing connecting member. The energy-absorbing connecting member is connected in series with the pipeline to form an inlet and outlet liquid channel. One end of the inlet and outlet liquid channel is connected to the pipeline connection port of the tank body, and the other end extends to the outside of the tank body, so that fluid can enter the tank body through the liquid loading and unloading pipeline or be discharged from the tank body. Among them, the yield strength of the energy-absorbing connecting member is less than the yield strengths of the pipeline and the tank body. When the transport vehicle is impacted, the energy-absorbing connecting member deforms prior to the pipeline and the tank body, so that the energy-absorbing connecting member can absorb the energy generated by the impact, achieving the purpose of protecting the tank body to prevent the liquid in the tank from leaking. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a partial structural schematic diagram of the transport vehicle in an embodiment.

[0021] Figure 2Yes Figure 1 The bottom view structure schematic diagram of the transport vehicle shown after removing the running structure.

[0022] Figure 3 Yes Figure 1 The structure schematic diagram of the transport vehicle shown after removing the loading and unloading liquid pipelines of marking g and marking h.

[0023] Figure 4 Yes Figure 1 The structure schematic diagram of the transport vehicle shown after removing the loading and unloading liquid pipelines of marking i and marking h.

[0024] Figure 5 Yes Figure 4 The partial enlarged and sectional structure schematic diagram at A.

[0025] Figure 6 Yes Figure 5 The partial enlarged structure schematic diagram at B.

[0026] Figure 7 Yes Figure 5 The structure schematic diagram in a half-sectional view state.

[0027] Figure 8 It is the structure schematic diagram of the loading and unloading liquid pipeline in an embodiment, wherein the energy dissipation connector includes a hose.

[0028] Figure 9 It is the front view structure schematic diagram of the valve box in an embodiment.

[0029] Figure 10 Yes Figure 9 The sectional structure schematic diagram at C-C.

[0030] Figure 11 Yes Figure 10 The partial enlarged structure schematic diagram at D.

[0031] Figure 12 Yes Figure 1 The structure schematic diagram of the transport vehicle shown after removing the loading and unloading liquid pipelines of marking g and marking i.

[0032] The descriptions of the attached drawing reference numerals are as follows: 100 - vehicle body; 200 - tank body; 210 - pipeline connection port; 300 - liquid loading and unloading pipeline, 310 - pipeline; 311 - first pipeline; 312 - second pipeline; 320 - energy dissipation connecting piece; 321 - valve body; 322 - valve core; 323 - actuator; 3211 - fluid passage; 324 - first flange; 325 - second flange; 326 - connecting stud; 327 - connecting pipe; 328 - cutting groove; 3281 - first cutting groove; 3282 - second cutting groove; 400 - valve box; 410 - box body; 411 - bottom plate; 412 - box door; 413 - side plate; 4131 - inner side plate; 4132 - outer side plate; 4133 - second filling layer; 41331 - profiled plate; 41332 - fire extinguishing agent; 420 - support pillar; 421 - thin-walled steel column; 422 - first filling layer; 500 - control valve; 600 - traveling structure; 610 - axle; 620 - wheel. Detailed implementation manners

[0033] Typical implementation manners embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different implementation manners, all of which do not depart from the scope of the present invention, and the descriptions and illustrations therein are for illustrative purposes in essence, rather than for limiting the present invention.

[0034] In the description of the present application, it should be understood that in the embodiments shown in the attached drawings, the indication of the direction or position relationship (such as up, down, left, right, front, and back, etc.) is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. When these elements are in the positions shown in the attached drawings, these descriptions are appropriate. If the descriptions of the positions of these elements change, then the indication of these directions also changes accordingly.

[0035] In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, the meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0036] Refer to Figure 1 and Figure 2, A transport vehicle is used to transfer flammable and explosive media from a storage bin for flammable and explosive media to a storage tank at a gas station. The transport vehicle includes a vehicle body 100, a tank body 200, and a liquid loading and unloading pipeline 300. The tank body 200 is assembled on the vehicle body 100 and is used to store flammable and explosive media fluid. A pipeline connection port 210 is provided on the tank body 200; the liquid loading and unloading pipeline 300 is connected to the pipeline connection port 210 of the tank body 200 and is used to supplement flammable and explosive media to the tank body 200 and discharge the flammable and explosive media in the tank body 200. Among them, the flammable and explosive media can be liquefied petroleum gas, liquefied natural gas, etc.

[0037] One end of the liquid loading and unloading pipeline 300 far from the pipeline connection port 210 usually extends to the outside of the tank body 200, which is convenient for connecting with the pipeline of the equipment for loading and unloading flammable and explosive media. For example, one end of the liquid loading and unloading pipeline 300 far from the pipeline connection port 210 extends to the tail of the transport vehicle; or one end of the liquid loading and unloading pipeline 300 far from the pipeline connection port 210 extends to the side of the transport vehicle. However, when a rear-end collision occurs to the transport vehicle, the liquid loading and unloading pipeline 300 with one end extending to the tail of the transport vehicle far from the pipeline connection port 210 is hit first; or when a side collision occurs to the transport vehicle, the liquid loading and unloading pipeline with one end extending to the side of the transport vehicle far from the pipeline connection port 210 is hit first. Among them, when the transport vehicle is hit, the impact force will be transmitted to the pipeline connection port 210 through the liquid loading and unloading pipeline 300, and stress concentration is likely to occur at the pipeline connection port 210, resulting in the rupture of the tank body 200 at the pipeline connection port 210, thus causing the leakage of flammable and explosive media and low safety.

[0038] Refer to Figure 3 and Figure 4 , The liquid loading and unloading pipeline 300 of the present application includes a pipeline 310 and an energy dissipation connector 320. The energy dissipation connector 320 is connected in series with the pipeline 310 to form an inlet and outlet liquid channel. One end of the inlet and outlet liquid channel is connected to the pipeline connection port 210 of the tank body 200 and is connected to the inside of the tank body 200. The other end of the inlet and outlet liquid channel extends to the outside of the tank body 200 and is used to connect to the pipeline 310 communicated with the storage bin providing flammable and explosive media or the storage tank at the gas station, so that the flammable and explosive media in the storage bin providing flammable and explosive media can be supplemented into the tank body 200, or the flammable and explosive media in the tank body 200 can be discharged into the storage tank at the gas station.

[0039] The yield strength of the energy-absorbing connector 320 is less than that of the pipeline 310 and the tank body 200. When the transport vehicle is impacted, the energy-absorbing connector 320 deforms prior to the pipeline 310 and the tank body 200, and the energy-absorbing connector 320 can absorb part of the impact energy during the deformation process, thereby preventing the tank body 200 from being impacted and prone to leakage of flammable and explosive media, enabling the energy-absorbing connector 320 to play an energy-absorbing role.

[0040] Refer to Figure 5 and Figure 7 In an embodiment, the energy-absorbing connector 320 includes a valve body 321, a valve core 322, and an actuator 323. The valve body 321, the valve core 322, and the actuator 323 form an emergency cut-off valve connected to the pipeline connection port 210. That is, a fluid passage 3211 is provided on the valve body 321. One end of the fluid passage 3211 communicates with the pipeline connection port 210, and the other end of the fluid passage 3211 communicates with the pipeline 310. The valve core 322 is movably connected within the fluid passage 3211 of the valve body 321. The valve core 322 can move relative to the valve body 321 to control the disconnection or connection of the fluid passage 3211, thereby controlling the inflow and outflow of flammable and explosive media within the tank body 200. The actuator 323 is connected to the valve body 321 and is in transmission connection with the valve core 322. The actuator 323 is used to control the movement of the valve core 322 relative to the valve body 321 to control the on-off of the fluid passage 3211 on the valve body 321.

[0041] Among them, refer to FIGS. 5 to Figure 7 On the side wall of one end of the valve body 321 close to the pipeline 310, a first cutting groove 3281 is provided. The first cutting groove 3281 is specifically provided on the outer side wall or the inner side wall of the valve body 321, and the first cutting groove 3281 is located between the valve core 322 and the pipeline 310, such that the yield strength of the valve body 321 at the first cutting groove 3281 is relatively small. When a collision occurs, the valve body 321 deforms or breaks first at the first cutting groove 3281. And the first cutting groove 3281 is provided at one end of the valve body 321 close to the connection of the pipeline 310, such that when the valve body 321 deforms at the first cutting groove 3281, it is still possible to control the valve core 322 to close to disconnect the fluid passage 3211, thereby preventing the leakage of flammable and explosive media from the pipeline connection port 210. The valve body 321 and the pipeline 310, as well as between the valve body 321 and the pipeline connection port 210, can be connected by flanges or by threads.

[0042] Refer to Figure 5 and Figure 6, in one embodiment, a first flange 324 is provided on the circumferential outer side of the valve body 321, and a second flange 325 is provided at one end of the pipeline 310 close to the valve body 321. The position of the second flange 325 is directly opposite to that of the first flange 324. The energy dissipation connecting member 320 further includes a connecting stud 326, and the connecting stud 326 connects the first flange 324 and the second flange 325, so that the pipeline 310 is installed on the valve body 321. Wherein, a second cutting groove 3282 is provided on the circumferential outer surface of the connecting stud 326, and the second cutting groove 3282 is provided between the first flange 324 and the second flange 325, so that when the transport vehicle is impacted, fracture occurs first at the connecting stud 326 to separate the pipeline 310 from the valve body 321, avoiding stress concentration at the pipeline connection port 210 of the tank body 200 during impact, thereby avoiding deformation and leakage of the tank body 200 and the emergency cut-off valve. Moreover, during the fracture process of the connecting stud 326, part of the impact energy can be absorbed, that is, the connecting stud 326 plays an energy dissipation role, avoiding leakage of flammable and explosive media due to the impact on the tank body 200. When the connecting stud 326 deforms at the second cutting groove 3282, the valve body 321 and the valve core 322 can still function normally to close, thereby avoiding leakage of flammable and explosive media from the pipeline connection port 210.

[0043] In one embodiment, the cutting groove 328 provided on the energy dissipation connecting member 320 includes a second cutting groove 3282 provided on the connecting stud 326 and a first cutting groove 3281 provided on the side wall of the valve body 321, so that the yield strength of the connecting stud 326 at the second cutting groove 3282 and the yield strength of the valve core 322 at the first cutting groove 3281 are both less than the yield strength of the tank body 200, thereby forming double protection. Preferably, the yield strength of the connecting stud 326 is less than the yield strength of the valve body 321, so that when the transport vehicle is impacted, the connecting stud 326 deforms prior to the valve body 321. Therefore, when the impact force is not large, fracture may occur only at the connecting stud 326, while the valve body 321 does not deform, thereby reducing the maintenance cost. It should be noted that the cutting groove 328 provided on the energy dissipation connecting member 320 may be only the second cutting groove 3282 provided on the connecting stud 326, and no first cutting groove 3281 is provided on the side wall of the valve body 321; or, the cutting groove 328 provided on the energy dissipation connecting member 320 may be only the first cutting groove 3281 provided on the side wall of the valve body 321, and no second cutting groove 3282 is provided on the connecting stud 326.

[0044] In one embodiment, the length direction of the valve body 321 is arranged vertically. The upper end of the valve body 321 is connected to the tank body, and the lower end of the valve body 321 is connected to the pipeline. The first flange 324 is arranged in the middle of the length direction of the valve body 321, and one end of the valve body 321 above the first flange 324 can be inserted into the pipeline connection port 210, so as to reduce the space outside the tank body occupied after the installation of the emergency cut-off valve, making the overall structure of the transport semi-trailer more compact. Wherein, the valve body 321 and the tank body can be connected by welding or flange connection.

[0045] The actuator 323 can automatically execute and control the opening and closing actions of the fluid passage 3211, so as to realize the automatic control of the opening or closing of the emergency cut-off valve, which is more convenient to operate compared with the existing manual emergency cut-off valve that rotates the valve core 322 by manual operation. For example, the valve core 322 is a ball valve core 322 and can rotate relative to the valve body 321. The actuator 323 is a rotating structure and can drive the valve core 322 to rotate relative to the valve body 321 to control the opening and closing of the fluid passage 3211 on the valve body 321. Another example is that the valve core 322 is a movable valve stem, the actuator 323 is a moving structure, and can drive the valve core to move relative to the valve body 321 to control the opening and closing of the fluid passage 3211.

[0046] In one embodiment, the actuator 323 is a pneumatic control actuator. For example: the valve core 322 is a ball valve core 322, the actuator 323 is a rotary cylinder, the actuator 323 is connected to the air pressure providing device through an air supply pipeline, and a control valve is connected in series on the air supply pipeline. The rotation of the rotating shaft connecting the rotary cylinder and the valve core 322 is controlled by the control valve, so as to realize the automatic control of the opening or closing of the emergency cut-off valve and can realize the remote control function, making the operation more convenient. For example: the valve core 322 is a movable valve stem, the actuator 323 is a telescopic cylinder, the actuator 323 is connected to the air pressure providing device through an air supply pipeline, and a control valve is connected in series on the air supply pipeline. The telescopic movement of the piston rod connecting the telescopic cylinder and the valve core 322 is controlled by the control valve, so as to realize the automatic control of the opening or closing of the emergency cut-off valve and can realize the remote control function, making the operation more convenient. Another example is that the valve core 322 is a movable valve stem, the actuator 323 is a rotary cylinder, a cam structure is arranged on the output shaft of the rotary cylinder, and the rotary cylinder is connected to the movable valve stem through the cam structure. When the output shaft of the rotary cylinder rotates, it can drive the valve core 322 to move, so as to realize the closing or opening function of the emergency cut-off valve. The control valve can be a pneumatic control valve or a mechanical valve. It should be noted that the actuator 323 can also be a hydraulic actuator or an electric actuator.

[0047] In one embodiment, the actuator 323 is a pneumatic-hydraulic actuator, such as a Shafer pneumatic-hydraulic actuator. The working principle of the pneumatic-hydraulic actuator is to utilize the fast response provided by the pneumatic system and the load-bearing capacity provided by the hydraulic system to accurately and quickly control the actuator. During the working process, the liquid pressure in the hydraulic system is detected by a pressure sensor, and the flow rate and direction of the air pressure and hydraulic pressure are controlled by a solenoid valve to achieve the advancement, stop, and positioning of the actuator.

[0048] In one embodiment, the energy dissipation connector 320 is a connecting pipe 327. A plurality of pipes 310 are configured, and the plurality of pipes 310 are arranged at intervals in sequence, and adjacent two pipes 310 are connected by the connecting pipe 327, so that the plurality of pipes 310 and the connecting pipe 327 are connected to form an inlet and outlet liquid channel. A third cutting groove is provided on the side wall of the connecting pipe 327, that is, the energy dissipation connector 320 further includes a third cutting groove provided on the connecting pipe 327, so that the yield strength of the connecting pipe 327 at the third cutting groove is relatively small. When a collision occurs, the connecting pipe 327 deforms or breaks first at the third cutting groove. Among them, the third cutting groove can be provided on the inner side wall or the outer side wall of the connecting pipe 327, or the third cutting groove can be provided on both the inner side wall and the outer side wall of the connecting pipe 327.

[0049] Preferably, the yield strength of the connecting pipe 327 is less than the yield strength of the connecting stud 326, and the yield strength of the connecting stud 326 is less than the yield strength of the valve body 321, so as to form a multi-level protection, improve the effect of the liquid loading and unloading pipeline 300 absorbing impact force, and improve safety. It should be noted that in some embodiments, the yield strength of the connecting stud 326 is less than the yield strength of the connecting pipe 327, and the yield strength of the connecting pipe 327 is less than the yield strength of the valve body 321, which can also form a multi-level protection. Moreover, when the impact force of the impact is small, only the connecting stud 326 can break, while the valve body 321 and the connecting pipe 327 do not deform, thereby reducing the maintenance cost.

[0050] In some embodiments, a cutting groove 328 is provided only on one of the connecting pipe 327, the connecting stud 326, and the valve body 321, and the weakest position of the liquid loading and unloading pipeline 300 is formed at the cutting groove 328. Or, a cutting groove 328 is provided on two of the connecting pipe 327, the connecting stud 326, and the valve body 321, and the yield strengths of the two are different, so as to form a multi-level protection, improve the effect of the liquid loading and unloading pipeline 300 absorbing impact force, and improve safety.

[0051] In one embodiment, the yield strength of the material used for the energy-dissipating connector 320 is less than the yield strengths of the pipeline 310 and the tank body 200. For example, the yield strength of the material used for the connecting pipe 327 described above is less than the yield strengths of the pipeline 310 and the tank body 200, or the yield strength of the material used for the connecting stud 326 is less than the yield strengths of the pipeline 310 and the tank body 200, so that when a collision occurs, deformation or fracture occurs first at the connecting pipe 327 or the connecting stud 326. In this embodiment, the energy-dissipating connector 320 may not be provided with a cutting groove 328.

[0052] Preferably, the yield strength of the energy-dissipating connector 320 is less than 220 mpa, and the yield strengths of the pipeline 310 and the tank body 200 are greater than 220 mpa. For example, the energy-dissipating connector 320 is a stainless steel pipe fitting, and the yield strength of the stainless steel pipe fitting is 205 mpa. The stainless steel pipe fitting is used to connect two adjacent pipelines 310, that is, the connecting pipe 327 described above is a stainless steel pipe fitting. The pipeline 310 is a carbon steel 20# steel pipe or a low alloy 16Mn steel pipe, and the tank body 200 is a carbon steel 20# storage tank or a low alloy 16Mn storage tank. The yield strength of the carbon steel 20# steel pipe is 245 mpa, and the yield strength of the low alloy 16Mn steel pipe is 345 mpa. Therefore, the yield strength of the energy-dissipating connector 320 is less than the yield strengths of the pipeline 310 and the tank body 200. Preferably, the pipeline 310 is a carbon steel 20# steel pipe, and the tank body 200 is a low alloy 16Mn storage tank, so that the yield strengths of both the energy-dissipating connector 320 and the pipeline 310 are less than the yield strength of the tank body 200, forming a two-stage defense line and improving the safety of the tank body 200.

[0053] It should be noted that the stainless steel pipe fitting can be a 301 steel pipe, a 304 steel pipe or a 316 steel pipe, which is convenient to obtain materials and relatively cheap in price. The pipeline 310 can also be other low-carbon steel pipelines 310 with a yield strength greater than 220 mpa. The tank body 200 can also adopt a tank body 200 structure made of low alloy steel materials such as Q295, Q345, Q390, Q420, Q460, etc.

[0054] Refer to Figure 3 and Figure 4, in one embodiment, the energy-absorbing connecting member 320 is provided with a bending portion. For example, the energy-absorbing connecting member 320 is a bent pipe. When the transport vehicle is impacted, the impact force generated forms stress concentration at the bending portion, causing the energy-absorbing connecting member 320 to deform prior to the pipe 310 and the tank body 200, enabling the energy-absorbing connecting member 320 to absorb more of the energy generated by the impact, reducing damage to the tank body 200 and the emergency cut-off valve, and effectively protecting the integrity of the entire tank body 200 and preventing leakage of the fluid medium inside the tank body 200. In this embodiment, a cut-off groove 328 may or may not be provided on the energy-absorbing connecting member 320, or the energy-absorbing connecting member 320 is made of a material with a yield strength less than that of the pipe 310 and the tank body 200.

[0055] In one embodiment, as Figure 8 shown, the energy-absorbing connecting member 320 is a flexible member. For example, the energy-absorbing connecting member 320 is a flexible hose. When the transport vehicle is impacted, the energy-absorbing connecting member 320 can undergo elastic deformation to absorb the generated impact force, avoiding damage to the tank body 200 and the emergency cut-off valve, and effectively protecting the integrity of the entire tank body 200 and preventing leakage of the fluid medium inside the tank body 200.

[0056] Referring to Figures 1 to 4 , the transport vehicle further includes a valve box 400 and a control valve 500; the control valve 500 is connected in series at one end of the liquid loading and unloading pipeline 300 away from the pipeline connection port 210, and the control valve 500 is used to control the on / off of the liquid loading and unloading pipeline 300. The valve box 400 is connected to the outer side of the tank body 200 or the vehicle body of the transport vehicle and surrounds the outer side of the control valve 500 to protect the control valve 500. The yield strength of the valve box 400 is less than that of the energy-absorbing connecting member 320. Since the valve box 400 is located at one end of the liquid loading and unloading pipeline 300 away from the pipeline connection port 210 of the tank body 200, when the transport vehicle is collided, the valve box 400 is first impacted, and the yield strength of the valve box 400 is less than that of the energy-absorbing connecting member 320, causing the valve box 400 to deform prior to the energy-absorbing connecting member 320 to absorb the impact energy of the collision, playing a protective role for the liquid loading and unloading pipeline 300 and the tank body 200, and moreover, the valve box 400 and the energy-absorbing connecting member 320 form a variety of energy-absorbing protection structures, improving the safety of the transport vehicle.

[0057] Referring to Figures 9 to 11, the valve box 400 includes a box body 410 and a support column 420 disposed on the box body 410. The support column 420 is disposed on the outer wall or the inner wall of the box body 410 to enhance the stress strength of the box body 410. The box body 410 is connected to the tank body 200 or the vehicle body of the transport vehicle, such that the box body 410 is connected to the tank body 200 or the vehicle body of the transport vehicle. The control valve 500 is located inside the box body 410, such that the box body 410 surrounds the control valve 500 on the outside of the control valve 500 to protect the control valve 500. In some embodiments, the valve box 400 may also not include the support column 420.

[0058] Wherein, the yield strengths of both the support column 420 and the box body 410 are less than the yield strength of the energy dissipation connecting member 320. When the transport vehicle is collided, the support column 420 and the box body 410 both deform prior to the liquid loading and unloading pipeline 300 and the tank body 200, so as to protect the liquid loading and unloading pipeline 300 and the tank body 200.

[0059] The box body 410 includes a bottom plate 411, a box door 412, and a plurality of side plates 413. The plurality of side plates 413 are connected end to end in sequence to form a ring. The bottom plate 411 and the box door 412 are respectively connected to both sides of the side plates 413, and the bottom plate 411, the box door 412, and the plurality of side plates 413 enclose to form a box body 410 with a hollow interior. In Figure 10 the illustrated embodiment, there are four side plates 413, and the four side plates 413 are connected end to end to form a "mouth" - shaped frame. Combining with the bottom plate 411 and the box door 412 respectively connected to both sides of the side plates 413, a hexahedron box body 410 with a closed cavity inside is formed. In other embodiments, the number of side plates 413 is five, and they are connected end to end to form a pentagonal structure, or the number of side plates 413 is six, and they are connected end to end to form a hexagonal structure. Among them, the box door 412 can be opened to operate the control valve 500 installed inside the box body 410. The support column 420 is connected to the bottom plate 411 or the side plates 413.

[0060] The side plate 413 includes an inner side plate 4131, an outer side plate 4132, and a second filling layer 4133. The inner side plate 4131 and the outer side plate 4132 are arranged side by side, and the inner side plate 4131 is disposed inside the outer side plate 4132. A sandwich layer is formed between the inner side plate 4131 and the outer side plate 4132, and the second filling layer 4133 is filled in the sandwich layer.

[0061] In one embodiment, the second filling layer 4133 is a fire extinguishing agent, such as dry powder fire extinguishing agent. When the transport vehicle is collided and the box body 410 is deformed, the fire extinguishing agent is scattered in the impacted area from the sandwich layer between the inner side plate 4131 and the outer side plate 4132, extinguishing explosion factors such as sparks from the source, and realizing the safety of the transport vehicle carrying inflammable and explosive materials.

[0062] In one embodiment, both the inner plate 4131 and the outer plate 4132 are flat steel plates, such that the outer surface and the inner surface of the box body 410 are flat structures. The second filling layer 4133 is a corrugated plate, and the cross-section of the corrugated plate can be wavy or zigzag. Moreover, the highest point of the corrugated plate (such as the peak point of the wave shape) abuts against the outer plate 4132, and the lowest point of the corrugated plate (such as the trough point of the wave shape) abuts against the inner plate 4131, such that the inner plate 4131 and the outer plate 4132 clamp the corrugated plate, realizing the fixation of the corrugated plate and improving the overall strength of the box body 410.

[0063] In one embodiment, as Figure 11 shown, the second filling layer 4133 includes a corrugated plate 41331 and a fire extinguishing agent 41332. The fire extinguishing agent 41332 is filled in the gaps between the corrugated plate and the inner plate 4131 and between the corrugated plate and the outer plate 4132. When the transport vehicle is collided and the box body 410 is deformed, the fire extinguishing agent is spread in the impacted area from the sandwich between the inner plate 4131 and the outer plate 4132, eliminating explosion factors such as sparks from the source and realizing the safety of the transport vehicle carrying flammable and explosive materials. In other embodiments, the inner plate 4131 and the outer plate 4132 can also be corrugated plates.

[0064] Referring to Figure 11 , the support column 420 includes a thin-walled steel column 421 and a first filling layer 422. The thin-walled steel column 421 is fixed to the side wall of the box body 410, and a cavity is formed between the thin-walled steel column 421 and the side wall of the box body 410. The first filling layer 422 is filled in the cavity. The thin-walled steel column 421 refers to a steel structure with an annular cross-section formed by cold bending a thin steel plate or strip steel with a thickness of 1.5 to 5 millimeters, which can ensure the strength required for the valve box 400 and make the weight of the support column 420 lighter. Among them, by setting the support column 420 to be formed by the thin-walled steel column 421 and the first filling layer 422, the yield strength of the support column 420 is less than the yield strength of the energy-absorbing connector 320, and the weight of the support column 420 is lighter. Among them, the thin-walled steel column 421 can be fixed to the inner surface of the inner plate 4131, or the thin-walled steel column 421 can be fixed to the outer surface of the outer plate 4132.

[0065] In Figure 9 and Figure 10 the shown embodiment, the support columns 420 are arranged on the inner walls on both sides in the width direction of the box body 410, and the support columns 420 arranged on each side in the width direction of the box body 410 are all L-shaped. In other embodiments, the support column 420 can also be of other structures. For example, there are eight support columns 420, and the eight support columns surround a cuboid structure. That is to say, the support columns 420 form the framework of the valve box 400.

[0066] In one embodiment, the first filling layer 422 is made of aluminum foam. The material of the aluminum foam is light, which makes the weight of the transport vehicle light and also ensures that the yield strength of the support column 420 is less than that of the energy-absorbing connecting piece 320. Moreover, the aluminum foam can absorb the impact force to achieve a buffering effect. In other embodiments, the first filling layer 422 may not be provided inside the cavity of the thin-walled steel column 421.

[0067] In one embodiment, the first filling layer 422 is a fire extinguishing agent, such as dry powder fire extinguishing agent. When the transport vehicle is collided and the support column 420 is deformed, the fire extinguishing agent is scattered from the cavity of the thin-walled steel column 421 to the impacted area, eliminating explosion factors such as sparks from the source and realizing the safety of the transport vehicle carrying inflammable and explosive materials.

[0068] In one embodiment, the cavity of the thin-walled steel column 421 is filled with aluminum foam and a fire extinguishing agent.

[0069] Referring to Figure 1 and Figure 2 , the transport vehicle further includes a running structure 600. The running structure 600 includes an axle 610 and wheels 620. The axle 610 is arranged below the vehicle body, and the wheels 620 are arranged at both ends of the axle 610, so that the axle 610, the wheels 620 and the vehicle body enclose a space. Since a braking structure, an axle and vehicle pipe control lines need to be installed in this space, usually only a pipe installation space with a relatively small dimension in the axial length direction of the axle 610 remains. A plurality of pipe connection ports 210 are arranged at intervals at the bottom of the tank body 200. A plurality of liquid loading and unloading pipelines 300 are provided. The plurality of liquid loading and unloading pipelines 300 are all arranged below the tank body 200, and the plurality of liquid loading and unloading pipelines 300 respectively correspond to the plurality of pipe connection ports 210 one by one. Therefore, the plurality of liquid loading and unloading pipelines 300 all need to pass through the pipe installation space.

[0070] In some embodiments of the present application, referring to Figures 1 - 4 and Figure 12 , the liquid loading and unloading pipeline 300 includes an energy-absorbing connecting piece 320 and a plurality of pipes 310. The plurality of pipes 310 are arranged at intervals in sequence, and adjacent two pipes 310 are connected by the energy-absorbing connecting piece 320. Among them, the energy-absorbing connecting piece 320 has a bending part. Specifically, the energy-absorbing connecting piece 320 is a bent pipe, so that the liquid loading and unloading pipeline 300 detours to the pipe installation space, and the plurality of liquid loading and unloading pipelines 300 all pass through the pipe installation space. Moreover, when the liquid loading and unloading pipeline 300 is impacted, the impact force can also be concentrated at the bending part so that the energy-absorbing connecting piece 320 deforms prior to the pipes 310 and the tank body 200, improving the safety of the tank body 200.

[0071] In Figure 2In the illustrated embodiment, the plurality of pipes 310 include a first pipe 311 and a second pipe 312. The first pipe 311 is disposed near the pipe connection port 210, and the first pipes 311 of the plurality of loading and unloading liquid pipelines 300 are arranged side by side in the vertical direction and all penetrate the pipe installation space, so that the plurality of loading and unloading liquid pipelines 300 can all penetrate the pipe installation space with a relatively small size. The second pipe 312 is disposed on the side of the first pipe 311 away from the pipe connection port 210, and the control valve 500 is disposed at one end of the second pipe 312 away from the first pipe 311. The first pipe 311 and the second pipe 312 are connected by an elbow, so that the second pipes 312 of the plurality of loading and unloading liquid pipelines 300 can be arranged at intervals in the horizontal direction, so that there is a relatively large space between the second pipes 312 of the plurality of loading and unloading liquid pipelines 300, to facilitate the connection of the control valve 500 to the pipeline of the equipment for loading and unloading flammable and explosive media.

[0072] It should be noted that in this embodiment, the elbow can also be replaced by a hose, that is, the energy dissipation connector 320 is an elbow.

[0073] The transport vehicle of the present application includes a tank body 200 and a loading and unloading liquid pipeline 300. The loading and unloading liquid pipeline 300 includes a pipe 310 and an energy dissipation connector 320. The energy dissipation connector 320 and the pipe 310 are connected in series to form an inlet and outlet liquid channel. One end of the inlet and outlet liquid channel is connected to the pipe connection port 210 of the tank body 200, and the other end extends to the outside of the tank body 200, so that the fluid can enter the interior of the tank body 200 through the loading and unloading liquid pipeline 300 or be discharged from the tank body 200. Wherein, the yield strength of the energy dissipation connector 320 is less than the yield strength of the pipe 310. When the transport vehicle is impacted, the energy dissipation connector 320 deforms prior to the pipe 310 and the tank body 200, so that the energy dissipation connector 320 can absorb the energy generated by the impact, achieving the purpose of protecting the tank body 200 so that the liquid in the tank does not leak. Moreover, the extinguishing agent stored in the cavities of the components at the impacted location spills and covers the impacted location, eliminating the fire hazard at the source.

[0074] Although the present invention has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A transport vehicle, characterized in that: include: A tank body, used for storing fluid, wherein the tank body is provided with a pipeline connection port; The loading and unloading liquid pipeline comprises a pipeline and a crush-proof connector, wherein the crush-proof connector is connected in series with the pipeline to form an inlet and outlet liquid channel, one end of the inlet and outlet liquid channel is connected to the pipeline connection port of the tank body, and the other end extends to the outside of the tank body; the yield strength of the crush-proof connector is less than the yield strength of the pipeline and the tank body; when the transport vehicle is hit, the crush-proof connector deforms before the pipeline and the tank body.

2. The transport vehicle according to claim 1, characterized in that: The energy-breaking connector is provided with a cutting groove, so that the yield strength of the energy-breaking connector at the location where the cutting groove is provided is smaller than the yield strength of the pipeline and the tank body.

3. The transport vehicle according to claim 2, characterized in that: There are multiple pipelines, which are arranged in sequence and spaced apart, and two adjacent pipelines are connected by the collapse connector; the collapse connector is a connecting pipe, and the cutting groove is arranged on the side wall of the connecting pipe.

4. The transport vehicle according to claim 2, characterized in that: The collapse energy connection piece includes a valve body and a valve core, the valve body is provided with a fluid channel and a first connection port and a second connection port respectively connected to the two ends of the fluid channel, the first connection port is connected to the pipeline connection port, the second connection port is connected to the pipeline, and the valve core is movably connected to the fluid channel of the valve body; the cutting groove is arranged on the side wall of the valve body and is located between the valve core and the second interface.

5. The transport vehicle according to claim 2, characterized in that: The collapse energy connection piece includes a valve body, a valve core and a connecting stud. The valve body is provided with a fluid channel and a first connecting port and a second connecting port respectively connected to the two ends of the fluid channel. The first connecting port of the valve body is connected to the pipeline connecting port. The valve body is provided with a first flange on the circumferential outer side of the first connecting port. A second flange is provided at one end of the pipeline. The second flange is opposite to the first flange. The connecting stud connects the first flange and the second flange. The cutting groove is provided on the circumferential outer surface of the connecting stud and is located between the first flange and the second flange.

6. The transport vehicle according to claim 4 or 5, characterized in that: The energy-breaking connector also includes an actuator, which is connected to the valve body and is in driving connection with the valve core. The actuator is used to control the movement of the valve core relative to the valve body so that the pipeline is connected to the pipeline connecting port.

7. The transport vehicle according to claim 1, characterized in that: The yield strength of the material used for the energy-breaking connector is less than the yield strength of the pipeline and the tank; and / or The yield strength of the energy-breaking connector is less than 220 MPa, and the yield strength of the pipeline and the tank body is greater than 220 MPa.

8. The transport vehicle according to claim 7, characterized in that: The energy-breaking connector is a stainless steel pipe fitting, the pipeline is a carbon steel 20# steel pipe or a low-alloy 16Mn steel pipe, and the tank body is a carbon steel 20# storage tank or a low-alloy 16Mn storage tank.

9. The transport vehicle according to claim 1 or 2, characterized in that: The energy-breaking connector is provided with a bending portion, and when the transport vehicle is hit, the impact force generated forms stress concentration at the bending portion, causing the energy-breaking connector to deform before the pipeline and the tank body; The energy-breaking connector is a curved pipe.

10. The transport vehicle according to claim 1 or 2, characterized in that: The energy-breaking connecting piece is a flexible piece, and when the transport vehicle is hit, the energy-breaking connecting piece can be deformed to absorb the impact force generated.

11. The transport vehicle according to claim 1 or 2, characterized in that: The transport vehicle also includes a valve box and a control valve; the valve box is connected to the tank body or the body of the transport vehicle, and the yield strength of the valve box is less than the yield strength of the collapse connector; the control valve is serially connected to the end of the loading and unloading liquid pipeline away from the pipeline connection port and is located in the box body, and the control valve is used to control the on-off of the loading and unloading liquid pipeline.

12. The transport vehicle according to claim 11, characterized in that: The valve box comprises a box body and a support, the box body is connected to the tank body or the body of the transport vehicle, and the control valve is located in the box body; The support pillars are fixed to the side walls of the box to enhance the force-bearing strength of the box; The yield strengths of the support and the box are both smaller than the yield strength of the energy-breaking connector.

13. The transport vehicle according to claim 12, characterized in that: The pillar comprises a thin-walled steel column and a first filling layer, wherein the thin-walled steel column is fixed to the side wall of the box body, and a cavity is formed between the thin-walled steel column and the side wall of the box body, and the first filling layer is filled in the cavity; The first filling layer is foamed aluminum and / or a fire extinguishing agent.

14. The transport vehicle according to claim 11, characterized in that: The box body comprises a bottom plate, a box door and a plurality of side plates, the plurality of side plates are sequentially connected end to end to form a ring, the bottom plate and the box door are respectively connected to two sides of the side plates, and the bottom plate, the box door and the plurality of side plates are enclosed to form a box body with a hollow interior; The side panel comprises an inner panel, an outer panel and a second filling layer, wherein the inner panel is arranged on the inner side of the outer panel, and an interlayer is formed between the inner panel and the outer panel, and the second filling layer is filled in the interlayer; The second filling layer is a corrugated board and / or a fire extinguishing agent; The support column is connected to the outer side plate or the inner side plate.

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