Transport vehicle

Abstract

The utility model provides a transport vehicle which 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 connector 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 utility model relates to the field of transport vehicle, especially transport vehicle. BACKGROUND

[0002] With the promotion of global economy, the international trade of flammable and explosive medium in China is increasingly active. The number of flammable and explosive medium transport vehicles exported by our company continues to grow, the sales area is extensive, and the market demand is diversified and personalized. In the face of such market environment, the diversification of tank structure function becomes the key to meet market demand. Therefore, designing a product that is both safe and meets the diversified needs has become an important issue that needs to be addressed urgently.

[0003] In order to facilitate the loading and unloading of flammable and explosive medium, the pipeline of the existing loading and unloading system is usually arranged on the outside of the tank structure. When the loading and unloading system is hit, for example, the tail loading and unloading system is hit from behind, or the side loading and unloading system is hit from the side, when the loading and unloading system is hit, the impact force is easily transmitted to the tank structure through the pipeline of the loading and unloading system, causing the tank structure to be damaged, and further causing the flammable and explosive medium inside the tank structure to be easily leaked and other safety hazards. SUMMARY

[0004] The utility model aims at solving the problem that the impact force is easily transmitted to the tank structure through the pipeline of the loading and unloading system when the existing flammable and explosive medium transport vehicle is hit.

[0005] To solve the above technical problems, the utility model provides a transport vehicle, which comprises a tank and a loading and unloading liquid pipeline, the tank is used for storing fluid, and a pipeline connection port is arranged on the tank; the loading and unloading liquid pipeline comprises a pipeline and a yieldable connecting piece, the yieldable 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 the pipeline connection port of the tank, and the other end extends to the outside of the tank; the yield strength of the yieldable connecting piece is less than that of the pipeline and the tank; when the transport vehicle is hit, the yieldable connecting piece deforms before the pipeline and the tank.

[0006] In some schemes of the present application, a cutting groove is arranged on the yieldable connecting piece, so that the yield strength of the yieldable connecting piece at the position where the cutting groove is arranged is less than that of the pipeline and the tank.

[0007] In some schemes of the present application, a plurality of pipelines are arranged, the plurality of pipelines are arranged in sequence and at intervals, and the yieldable connecting piece is connected between adjacent two pipelines; the yieldable connecting piece is a connecting pipe, and the cutting groove is arranged on the side wall of the connecting pipe.

[0008] In some embodiments of the present application, the failure connection comprises a valve body, a valve core and a connecting stud, the valve body is provided with a fluid passage and first and second connecting ports respectively communicating with two ends of the fluid passage, the first connecting port of the valve body is connected with the pipeline connecting port, the valve body is provided with a first flange on the circumferential outer side of the second connecting port, one end of the pipeline is provided with a second flange, the second flange is opposite to the first flange in position, and the connecting stud connects the first flange and the second flange; the cut-off groove is arranged on the circumferential outer surface of the connecting stud and located between the first flange and the second flange.

[0009] In some embodiments of the present application, the failure connection comprises a valve body, a valve core and a connecting stud, the valve body is provided with a fluid passage and first and second connecting ports respectively communicating with two ends of the fluid passage, the first connecting port of the valve body is connected with the pipeline connecting port, the valve body is provided with a first flange on the circumferential outer side of the second connecting port, one end of the pipeline is provided with a second flange, the second flange is opposite to the first flange in position, and the connecting stud connects the first flange and the second flange; the cut-off groove is arranged on the circumferential outer surface of the connecting stud and located between the first flange and the second flange.

[0010] In some embodiments of the present application, the failure connection further comprises an actuator connected to the valve body and in transmission connection with the valve core, the actuator is used to control the movement of the valve core relative to the valve body so as to make the pipeline communicate with the pipeline connecting port.

[0011] In some embodiments of the present application, the material of the failure connection has a yield strength less than that of the pipeline and the tank body; and / or the yield strength of the failure connection is less than 220mpa, and the yield strength of the pipeline and the tank body is greater than 220mpa.

[0012] In some embodiments of the present application, the failure connection is a stainless steel pipe, 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.

[0013] In some embodiments of the present application, the failure connection is provided with a bending part, when the transport vehicle is hit, the impact force generated at the bending part forms stress concentration to make the failure connection deform before the pipeline and the tank body; the failure connection is a bent pipe.

[0014] In some embodiments of the present application, the failure connection is a flexible part, when the transport vehicle is hit, the failure connection can deform to absorb the impact force generated.

[0015] In some embodiments of the present application, the transport vehicle further comprises 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 the yield strength of the energy collapse connector; the control valve is connected in series to the liquid loading and unloading pipeline at a position away from the pipeline connection port, and is located in the valve box; and the control valve is used to control the opening and closing of the liquid loading and unloading pipeline.

[0016] In some embodiments of the present application, the valve box comprises a box body and a support; the box body is connected to the tank body or the vehicle body of the transport vehicle, and the control valve is located in the box body; the support is fixed to the side wall of the box body to strengthen the stress strength of the box body; and the yield strength of the support and the box body is less than the yield strength of the energy collapse connector.

[0017] In some embodiments of the present application, the support comprises a thin-walled steel column and a first filling layer; 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 fire extinguishing agent.

[0018] In some embodiments of the present application, the box body comprises a bottom plate, a box door and a plurality of side plates; the plurality of side plates are connected in sequence and form a ring shape; the bottom plate and the box door are connected to the two sides of the side plates respectively, and the bottom plate, the box door and the plurality of side plates form a hollow box body; the side plate comprises an inner side plate, an outer side plate and a second filling layer; the inner side plate is arranged on the inner side of the outer side plate, and a sandwich layer is formed between the inner side plate and the outer side plate; the second filling layer is filled in the sandwich layer; the second filling layer is a pressed plate and / or fire extinguishing agent; and the support is connected to the outer side plate or the inner side plate.

[0019] According to the above technical solutions, the transport vehicle of the present application comprises a tank body and a liquid loading and unloading pipeline, the liquid loading and unloading pipeline comprises a pipeline and an energy collapse connector, the energy collapse connector is connected in series to the pipeline to form a liquid inlet and outlet passage, one end of the liquid inlet and outlet passage 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 the fluid can enter the inside of the tank body or be discharged from the tank body through the liquid loading and unloading pipeline. The yield strength of the energy collapse connector is less than the yield strength of the pipeline and the tank body, and when the transport vehicle is hit, the energy collapse connector deforms before the pipeline and the tank body, so that the energy collapse connector can absorb the energy generated by the impact, thereby protecting the tank body and preventing the liquid in the tank from leaking. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 FIG. 1 is a schematic view of the local structure of the transport vehicle in an embodiment.

[0021] Figure 2 is Figure 1 is a bottom view of the transport cart with the walking structure removed.

[0022] Figure 3 is Figure 1 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker h removed.

[0023] Figure 4 is Figure 1 is a view of the transport cart with the loading and unloading fluid line of the marker i and the marker h removed.

[0024] Figure 5 is Figure 4 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker i removed.

[0025] Figure 6 is Figure 5 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker i removed.

[0026] Figure 7 is Figure 5 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker i removed.

[0027] Figure 8 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker i removed.

[0028] Figure 9 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker i removed.

[0029] Figure 10 is Figure 9 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker i removed.

[0030] Figure 11 is Figure 10 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker i removed.

[0031] Figure 12 is Figure 1 is a view of the transport cart with the loading and unloading fluid line of the marker g and the marker i removed.

[0032] The reference signs are explained as follows: 100 - vehicle body; 200 - tank body; 210 - pipe connecting port; 300 - loading and unloading liquid pipeline, 310 - pipe; 311 - first pipe; 312 - second pipe; 320 - energy collapse 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 - cut-off groove; 3281 - first cut-off groove; 3282 - second cut-off 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 column; 421 - thin-walled steel column; 422 - first filling layer; 500 - control valve; 600 - walking structure; 610 - axle; 620 - wheel. DETAILED DESCRIPTION

[0033] The typical embodiments embodying the features and advantages of the present application will be described in detail in the following description. It should be understood that the present application can be varied in a wide range of embodiments, none of which depart from the scope of the present application, and that the description and drawings are to be considered as illustrative in nature, and not restrictive.

[0034] In the description of the present application, it should be understood that the indication of direction or position relationship (such as up, down, left, right, front and back, etc.) in the embodiments shown in the drawings is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation. When these elements are in the position shown in the drawings, these descriptions are appropriate. If the position of these elements changes, the indication of direction also changes accordingly.

[0035] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0036] Reference is made to Figure 1 and Figure 2The utility model provides a transport vehicle for transferring flammable and explosive medium from the storage bin of flammable and explosive medium to the storage tank of gas station, which comprises 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, the tank body 200 is used for storing flammable and explosive medium fluid, and the tank body 200 is provided with a pipeline connecting port 210; the liquid loading and unloading pipeline 300 is connected with the pipeline connecting port 210 of the tank body 200, and the liquid loading and unloading pipeline 300 is used for supplementing flammable and explosive medium to the tank body 200 and discharging flammable and explosive medium in the tank body 200. The flammable and explosive medium can be liquefied petroleum gas, liquefied natural gas or the like.

[0037] The end of the liquid loading and unloading pipeline 300 away from the pipeline connecting 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 medium. For example, the end of the liquid loading and unloading pipeline 300 away from the pipeline connecting port 210 extends to the tail of the transport vehicle; or the end of the liquid loading and unloading pipeline 300 away from the pipeline connecting port 210 extends to the side of the transport vehicle. However, when the transport vehicle is involved in a rear-end collision accident, the liquid loading and unloading pipeline 300, whose end away from the pipeline connecting port 210 extends to the tail of the transport vehicle, is first impacted; or when the transport vehicle is involved in a side collision accident, the liquid loading and unloading pipeline, whose end away from the pipeline connecting port 210 extends to the side of the transport vehicle, is first impacted. When the transport vehicle is impacted, the impact force is transmitted to the pipeline connecting port 210 through the liquid loading and unloading pipeline 300, and stress concentration is easily generated at the pipeline connecting port 210, which leads to the rupture of the tank body 200 at the pipeline connecting port 210, thereby causing flammable and explosive medium leakage and low safety.

[0038] Referring to Figure 3 and Figure 4 , the liquid loading and unloading pipeline 300 of the utility model comprises a pipeline 310 and a collapsible connecting piece 320, the collapsible connecting piece 320 is connected in series with the pipeline 310 to form a liquid inlet and outlet channel, one end of the liquid inlet and outlet channel is connected with the pipeline connecting port 210 of the tank body 200 and realizes communication with the inside of the tank body 200, and the other end of the liquid inlet and outlet channel extends to the outside of the tank body 200 and is used for connecting the pipeline 310 in communication with the storage bin of flammable and explosive medium or the storage tank of gas station, so that the flammable and explosive medium in the storage bin of flammable and explosive medium can be supplemented into the tank body 200, or the flammable and explosive medium in the tank body 200 can be discharged into the storage tank of gas station.

[0039] The yield strength of the energy-dissipating connector 320 is less than that of the pipe 310 and the tank 200. When the transport vehicle is hit, the energy-dissipating connector 320 deforms before the pipe 310 and the tank 200. Moreover, the energy-dissipating connector 320 can absorb part of the impact energy during the deformation process, thereby preventing the tank 200 from being easily damaged by the impact and causing leakage of flammable and explosive media, so that the energy-dissipating connector 320 plays an energy-dissipating role.

[0040] See Figure 5 and Figure 7 In one embodiment, the emergency shut-off valve 320 includes a valve body 321, a valve core 322, and an actuator 323. The valve body 321, valve core 322, and actuator 323 form an emergency shut-off valve connected to the pipe connection port 210. Specifically, the valve body 321 has a fluid passage 3211, one end of which connects to the pipe connection port 210, and the other end connects to the pipe 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 opening or closing of the fluid passage 3211, thereby controlling the entry and exit of flammable and explosive media within the tank 200. The actuator 323 is connected to the valve body 321 and is throttle-connected to the valve core 322. The actuator 323 controls the movement of the valve core 322 relative to the valve body 321 to control the opening and closing of the fluid passage 3211 on the valve body 321.

[0041] See Figures 5 to 6. Figure 7 A first shut-off groove 3281 is provided on the side wall of the valve body 321 near the pipe 310. The first shut-off groove 3281 is specifically located on the outer or inner side wall of the valve body 321, and is situated between the valve core 322 and the pipe 310, resulting in a lower yield strength of the valve body 321 at the first shut-off groove 3281. In the event of a collision, the valve body 321 will deform or break first at the first shut-off groove 3281. Since the first shut-off groove 3281 is located at the end of the valve body 321 near the pipe 310 connection, even when the valve body 321 deforms at the first shut-off groove 3281, the fluid passage 3211 can still be disconnected by controlling the valve core 322 to close, thereby preventing leakage of flammable and explosive media from the pipe connection port 210. The valve body 321 and the pipe 310, as well as the valve body 321 and the pipe connection port 210, can be connected by a flange or by a threaded connection.

[0042] See Figure 5 and Figure 6In one embodiment, a first flange 324 is provided on the outer circumferential side of the valve body 321, and a second flange 325 is provided on the end of the pipe 310 near the valve body 321, with the second flange 325 facing the first flange 324. The emergency shut-off connector 320 also includes a connecting stud 326, which connects the first flange 324 and the second flange 325, allowing the pipe 310 to be installed on the valve body 321. A second cutting groove 3282 is provided on the outer circumferential surface of the connecting stud 326, and the second cutting groove 3282 is located between the first flange 324 and the second flange 325. This ensures that when the transport vehicle is impacted, the connecting stud 326 breaks first, separating the pipe 310 from the valve body 321. This prevents stress concentration at the pipe connection port 210 of the tank 200 due to the impact force, thereby preventing deformation of the tank 200 and the emergency shut-off valve, which could lead to leakage. Furthermore, during the fracture process, the connecting stud 326 can absorb some of the impact energy, meaning it acts as an energy-dissipating element, preventing the tank 200 from being easily leaked by flammable and explosive media due to impact. When the connecting stud 326 deforms in the second cut-off groove 3282, the valve body 321 and valve core 322 can still function normally to close the valve, thereby preventing flammable and explosive media from leaking from the pipeline connection port 210.

[0043] In one embodiment, the cut-off groove 328 provided in the energy-saving connector 320 includes a second cut-off groove 3282 provided on the connecting stud 326 and a first cut-off groove 3281 provided on the side wall of the valve body 321, such that the yield strength of the connecting stud 326 at the second cut-off groove 3282 and the yield strength of the valve core 322 at the first cut-off 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 before the valve body 321. Therefore, when the impact force is not large, it may only break at the connecting stud 326, while the valve body 321 does not deform, thereby reducing maintenance costs. It should be noted that the cutting groove 328 provided in the energy-saving connector 320 may only be the second cutting groove 3282 provided on the connecting stud 326, and the first cutting groove 3281 may not be provided on the side wall of the valve body 321; or, the cutting groove 328 provided in the energy-saving connector 320 may only be the first cutting groove 3281 provided on the side wall of the valve body 321, and the second cutting groove 3282 may not be provided on the connecting stud 326.

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

[0045] The actuator 323 can automatically execute and control the opening and closing of the fluid passage 3211, thereby realizing automatic control of the opening or closing of the emergency shut-off valve, which is more convenient than the existing manual emergency shut-off valve operated by manually rotating the valve core 322. For example, the valve core 322 is a ball valve core 322, which can rotate relative to the valve body 321, and the actuator 323 is a rotating structure, which 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. As another example, the valve core 322 is a movable valve stem, and the actuator 323 is a movable structure, which 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 pneumatically controlled actuator. For example, the valve core 322 is a ball valve core 322, and the actuator 323 is a rotary cylinder. The actuator 323 is connected to a pneumatic pressure supply device via a vent pipe, and a control valve is connected in series on the vent pipe. The control valve controls the rotation of the shaft connected to the valve core 322 by the rotary cylinder, thereby automatically controlling the opening or closing of the emergency shut-off valve and enabling remote control functionality, making operation more convenient. For example, the valve core 322 is a movable valve stem, and the actuator 323 is a telescopic cylinder. The actuator 323 is connected to a pneumatic pressure supply device via a vent pipe, and a control valve is connected in series on the vent pipe. The control valve controls the extension and retraction of the piston rod connected to the valve core 322 by the telescopic cylinder, thereby automatically controlling the opening or closing of the emergency shut-off valve and enabling remote control functionality, making operation more convenient. For example, valve core 322 is a movable valve stem, and actuator 323 is a rotary cylinder. The output shaft of the rotary cylinder has a cam structure, and the rotary cylinder is connected to the movable valve stem through the cam structure. This allows the output shaft of the rotary cylinder to rotate, driving the valve core 322 to move, thereby realizing the closing or opening function of the emergency shut-off valve. The control valve can be a pneumatic valve or a mechanical valve. It should be noted that actuator 323 can also be a hydraulic actuator or an electric actuator.

[0047] In one embodiment, the actuator 323 is a pneumatic-hydraulic linkage actuator, such as the Shafer pneumatic-hydraulic linkage actuator. The working principle of the pneumatic-hydraulic linkage actuator is to utilize the rapid response provided by the pneumatic system and the load-bearing capacity provided by the hydraulic system to accurately and quickly control the actuator. During operation, a pressure sensor detects the liquid pressure in the hydraulic system, and a solenoid valve controls the flow and direction of the pneumatic and hydraulic pressures to achieve the actuator's movement, stopping, and positioning.

[0048] In one embodiment, the energy-efficient connector 320 is a connecting pipe 327. Multiple pipes 310 are configured, spaced apart sequentially, and adjacent pipes 310 are connected by the connecting pipe 327, forming an inlet / outlet channel. A third cutting groove is provided on the side wall of the connecting pipe 327; that is, the energy-efficient connector 320 also includes a third cutting groove on the connecting pipe 327, resulting in a lower yield strength of the connecting pipe 327 at the third cutting groove. Upon impact, the connecting pipe 327 deforms or breaks first at the third cutting groove. The third cutting groove can be provided on the inner or outer side wall of the connecting pipe 327, or it can be provided on both the inner and outer side walls 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, thus forming multi-level protection and improving the effect of the loading and unloading fluid pipeline 300 in absorbing impact force, thereby improving 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 multi-level protection. Moreover, when the impact force is small, it may only break at the connecting stud 326, while the valve body 321 and the connecting pipe 327 do not deform, thereby reducing maintenance costs.

[0050] In some embodiments, a cut-off groove 328 is provided only on one of the connecting pipe 327, the connecting stud 326, and the valve body 321, and the weakest point of the loading / unloading pipeline 300 is formed at the cut-off groove 328. Alternatively, the cut-off 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, thus forming multi-level protection, improving the effect of the loading / unloading pipeline 300 in absorbing impact forces, and improving safety.

[0051] In one embodiment, the yield strength of the material used for the energy-efficient connector 320 is less than that of the pipe 310 and the tank 200. For example, the yield strength of the material used for the connecting pipe 327 is less than that of the pipe 310 and the tank 200, or the yield strength of the material used for the connecting stud 326 is less than that of the pipe 310 and the tank 200, so that when a collision occurs, deformation or breakage occurs first at the connecting pipe 327 or the connecting stud 326. In this embodiment, the energy-efficient connector 320 may not have a cutting groove 328.

[0052] Preferably, the yield strength of the collapsible connector 320 is less than 220 MPa, while the yield strength of the pipe 310 and the tank 200 is greater than 220 MPa. For example, the collapsible connector 320 is a stainless steel pipe fitting with a yield strength of 205 MPa. This stainless steel pipe fitting is used to connect two adjacent pipes 310, meaning the aforementioned connecting pipe 327 is also a stainless steel pipe fitting. The pipe 310 is either carbon steel 20# or low-alloy 16Mn steel, and the tank 200 is either carbon steel 20# or low-alloy 16Mn. The yield strength of the carbon steel 20# pipe is 245 MPa, and the yield strength of the low-alloy 16Mn steel pipe is 345 MPa. Therefore, the yield strength of the collapsible connector 320 is less than the yield strength of the pipe 310 and the tank 200. Preferably, the pipe 310 is a carbon steel 20# pipe and the tank 200 is a low alloy 16Mn storage tank, so that the yield strength of the cavitation connector 320 and the pipe 310 is less than the yield strength of the tank 200, forming a two-level defense line and improving the safety of the tank 200.

[0053] It should be noted that stainless steel pipe fittings can be made of 301, 304, or 316 steel pipes, which are readily available and relatively inexpensive. Pipe 310 can also be other low-carbon steel pipes with a yield strength greater than 220 MPa. The tank body 200 can also be constructed using low-alloy steel materials such as Q295, Q345, Q390, Q420, and Q460.

[0054] See Figure 3 and Figure 4In one embodiment, the energy-absorbing connector 320 has a bend, for example, the energy-absorbing connector 320 is a bent pipe. When the transport vehicle is impacted, the resulting impact force creates stress concentration at the bend, causing the energy-absorbing connector 320 to deform before the pipe 310 and the tank 200. This allows the energy-absorbing connector 320 to absorb more of the impact energy, reducing damage to the tank 200 and the emergency shut-off valve, effectively protecting the integrity of the entire tank 200 and preventing leakage of the fluid medium inside the tank 200. In this embodiment, the energy-absorbing connector 320 may or may not have a cut-off groove 328, or the energy-absorbing connector 320 may be made of a material with a yield strength lower than that of the pipe 310 and the tank 200.

[0055] In one embodiment, such as Figure 8 As shown, the energy-saving connector 320 is a flexible component, such as a hose. When the transport vehicle is hit, the energy-saving connector 320 can undergo elastic deformation to absorb the impact force, avoiding damage to the tank 200 and the emergency shut-off valve, effectively protecting the integrity of the entire tank 200 and preventing leakage of the fluid medium inside the tank 200.

[0056] See Figures 1 to 4 The transport vehicle also includes a valve box 400 and a control valve 500; the control valve 500 is connected in series at the end of the loading / unloading pipeline 300 away from the pipeline connection port 210, and is used to control the on / off state of the loading / unloading pipeline 300. The valve box 400 is connected to the outside of the tank body 200 or the body of the transport vehicle, and surrounds the outside of the control valve 500 to protect it. The yield strength of the valve box 400 is less than the yield strength of the collapsible connector 320. Since the valve box 400 is located at the end of the loading / unloading pipeline 300 away from the pipe connection port 210 of the tank body 200, when the transport vehicle is collided, it will first hit the valve box 400. Since the yield strength of the valve box 400 is less than the yield strength of the collapsible connector 320, the valve box 400 will deform before the collapsible connector 320 to absorb the impact energy of the collision, thus protecting the loading / unloading pipeline 300 and the tank body 200. Moreover, the valve box 400 and the collapsible connector 320 form multiple collapsible protection structures, improving the safety of the transport vehicle.

[0057] See Figures 9 to 11The valve box 400 includes a box body 410 and supports 420 disposed on the box body 410. The supports 420 are disposed on the outer wall or inner wall of the box body 410 to enhance the load-bearing 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 its outside to protect the control valve 500. In some embodiments, the valve box 400 may not include the supports 420.

[0058] The yield strength of both the support column 420 and the housing 410 is less than that of the collapsible connector 320. This ensures that when the transport vehicle is involved in a collision, the support column 420 and the housing 410 deform before the loading / unloading pipeline 300 and the tank 200, thus protecting the loading / unloading pipeline 300 and the tank 200.

[0059] The container 410 includes a bottom plate 411, a door 412, and multiple side plates 413. The side plates 413 are connected end-to-end to form a ring. The bottom plate 411 and the door 412 are respectively connected to the two sides of the side plates 413, and the bottom plate 411, door 412, and side plates 413 together form a hollow container 410. Figure 10 In the illustrated embodiment, there are four side panels 413, which are connected end-to-end to form a "U"-shaped frame. Combined with a base plate 411 and a door 412 connected to both sides of the side panels 413, a hexagonal box 410 with an internal enclosed cavity is formed. In other embodiments, there are five side panels 413, connected end-to-end to form a five-dimensional structure, or six side panels 413, connected end-to-end to form a six-dimensional structure. The door 412 can be opened to operate a control valve 500 installed inside the box 410. A support column 420 is connected to either the base plate 411 or the side panels 413.

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

[0061] In one embodiment, the second filling layer 4133 is a fire extinguishing agent, such as a dry powder fire extinguishing agent. When the transport vehicle is hit and the container 410 deforms, the fire extinguishing agent is spread from the interlayer between the inner side panel 4131 and the outer side panel 4132 into the impact area, eliminating sparks and other explosive factors at the source, thus ensuring the safety of the flammable and explosive transport vehicle.

[0062] In one embodiment, the inner side plate 4131 and the outer side plate 4132 are both flat steel plates, making the outer and inner surfaces of the box 410 flat. The second filling layer 4133 is a profiled plate. The cross-section of the profiled plate can be wavy or zigzag. The highest point of the profiled plate (e.g., the crest of the wave) abuts against the outer side plate 4132, and the lowest point of the profiled plate (e.g., the trough of the wave) abuts against the inner side plate 4131. This allows the inner side plate 4131 and the outer side plate 4132 to clamp the profiled plate, thereby fixing the profiled plate and improving the overall strength of the box 410.

[0063] In one embodiment, such as Figure 11 As shown, the second filling layer 4133 includes a profiled sheet 41331 and a fire extinguishing agent 41332. The fire extinguishing agent 41332 fills the gaps between the profiled sheet and the inner side plate 4131, and between the profiled sheet and the outer side plate 4132. When the transport vehicle is collided with and the container 410 deforms, the fire extinguishing agent is dispersed from the interlayer between the inner side plate 4131 and the outer side plate 4132 into the impact area, extinguishing sparks and other explosive factors at the source, thus ensuring the safety of the flammable and explosive transport vehicle. In other embodiments, the inner side plate 4131 and the outer side plate 4132 may also be profiled sheets.

[0064] See 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 housing 410, and a cavity is formed between the thin-walled steel column 421 and the side wall of the housing 410. The first filling layer 422 fills the cavity. The thin-walled steel column 421 refers to a steel structure made of 1.5-5 mm thin steel plate or strip cold-bent into an annular cross-section, which can ensure the required strength of the valve box 400 and make the support column 420 lighter. In particular, by setting the support column 420 as a thin-walled steel column 421 and a first filling layer 422, the yield strength of the support column 420 is less than the yield strength of the collapsible connector 320, and the support column 420 is lighter. The thin-walled steel column 421 can be fixed to the inner surface of the inner side plate 4131, or the thin-walled steel column 421 can be fixed to the outer surface of the outer side plate 4132.

[0065] exist Figure 9 and Figure 10 In the illustrated embodiment, the support pillars 420 are disposed on the inner walls of both sides of the housing 410 in the width direction, and the support pillars 420 disposed on each side of the housing 410 in the width direction are L-shaped. In other embodiments, the support pillars 420 may also have other structures, for example: eight support pillars 420 are provided, and the eight support pillars form a cuboid structure, that is, the support pillars 420 form the skeleton of the valve box 400.

[0066] In one embodiment, the first filling layer 422 is aluminum foam. Aluminum foam is lightweight, resulting in a lighter transport vehicle and ensuring that the yield strength of the support column 420 is less than the yield strength of the collapsible connector 320. Furthermore, aluminum foam can absorb impact forces, achieving a cushioning 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 a dry powder fire extinguishing agent. When the transport vehicle is hit and the support column 420 is deformed, the fire extinguishing agent is sprayed from the cavity of the thin-walled steel column 421 into the impact area, eliminating explosive factors such as sparks at the source and ensuring the safety of the flammable and explosive transport vehicle.

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

[0069] See Figure 1 and Figure 2 The transport vehicle also includes a running gear 600, which comprises an axle 610 and wheels 620. The axle 610 is located below the vehicle body, and the wheels 620 are located at both ends of the axle 610, forming a space enclosed by the axle 610, wheels 620, and vehicle body. Since this space also requires the installation of braking structures, axles, and vehicle control wiring, it typically leaves only a small space for pipe installation along the axial length of the axle 610. The bottom of the tank 200 has multiple pipe connection ports 210 spaced apart. Multiple loading / unloading pipelines 300 are provided, all located below the tank 200, and each pipeline 300 corresponds one-to-one with one of the multiple pipe connection ports 210. Therefore, all loading / unloading pipelines 300 need to pass through the pipe installation space.

[0070] In some embodiments of this application, see Figures 1-4 as well as Figure 12 The loading / unloading pipeline 300 includes a collapsible connector 320 and multiple pipes 310, which are arranged sequentially at intervals, and adjacent pipes 310 are connected by the collapsible connector 320. The collapsible connector 320 has a bend, specifically a bend, which allows the loading / unloading pipeline 300 to detour to the pipeline installation space, and multiple loading / unloading pipelines 300 pass through the pipeline installation space. Furthermore, when the loading / unloading pipeline 300 is impacted, the impact force can be concentrated at the bend, causing the collapsible connector 320 to deform before the pipes 310 and the tank 200, thus improving the safety of the tank 200.

[0071] exist 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 located near the pipe connection port 210, and the first pipes 311 of the plurality of loading and unloading liquid lines 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 lines 300 can penetrate the relatively small pipe installation space. The second pipe 312 is located on the side of the first pipe 311 away from the pipe connection port 210, and the control valve 500 is located at the end of the second pipe 312 away from the first pipe 311. The first pipe 311 and the second pipe 312 are connected by a bend, so that the second pipes 312 of the plurality of loading and unloading liquid lines 300 can be arranged at horizontal intervals, so that there is a large space between the second pipes 312 of the plurality of loading and unloading liquid lines 300, so as to facilitate the connection of the control valve 500 with the pipeline used for loading and unloading flammable and explosive media.

[0072] It should be noted that in this embodiment, the bend can also be replaced by a flexible hose, that is, the connector 320 is a bend.

[0073] The transport vehicle of this application includes a tank 200 and a loading / unloading pipeline 300. The loading / unloading pipeline 300 includes a pipe 310 and a collapsible connector 320. The collapsible connector 320 is connected in series with the pipe 310 to form an inlet / outlet channel. One end of the inlet / outlet channel is connected to the pipe connection port 210 of the tank 200, and the other end extends to the outside of the tank 200, allowing fluid to enter the tank 200 or exit from the tank 200 through the loading / unloading pipeline 300. The yield strength of the collapsible connector 320 is lower than that of the pipe 310. When the transport vehicle is impacted, the collapsible connector 320 deforms before the pipe 310 and the tank 200, allowing it to absorb the energy generated by the impact and protect the tank 200 from leakage. Furthermore, the extinguishing agent stored in the cavities of the impacted components spills out, covering the impact site and eliminating fire hazards at the source.

[0074] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not 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 embodiments are not limited to any of the foregoing details, but should be interpreted broadly 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 for storing fluids, wherein the tank is provided with pipe connection ports; The loading and unloading pipeline includes a pipe and a collapsible connector. The collapsible connector is connected in series with the pipe to form an inlet and outlet channel. One end of the inlet and outlet channel is connected to the pipe connection port of the tank body, and the other end extends to the outside of the tank body. The yield strength of the collapsible connector is less than the yield strength of the pipe and the tank body. When the transport vehicle is impacted, the collapsible connector deforms before the pipe and the tank body.

2. The transport vehicle according to claim 1, characterized in that, The energy-reducing connector is provided with a cutting groove, so that the yield strength of the energy-reducing connector at the location of the cutting groove is less than the yield strength of the pipe and the tank.

3. The transport vehicle according to claim 2, characterized in that, The pipeline is configured in multiple ways, and the multiple pipelines are arranged sequentially at intervals, with adjacent pipelines connected by the energy-saving connector; the energy-saving connector is a connecting pipe, and the cutting groove is provided on the side wall of the connecting pipe.

4. The transport vehicle according to claim 2, characterized in that, The collapsible connector 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 that are respectively connected to the two ends of the fluid channel. The first connection port is connected to the pipe connection port, and the second connection port is connected to the pipe. The valve core is movably connected to the fluid channel of the valve body. The cut-off groove is provided on the side wall of the valve body and is located between the valve core and the second connection port.

5. The transport vehicle according to claim 2, characterized in that, The collapsible connector includes a valve body, a valve core, and a connecting stud. The valve body has a fluid channel and a first connection port and a second connection port that communicate with both ends of the fluid channel. The first connection port of the valve body is connected to the pipe connection port. The valve body has a first flange on the circumferential outer side of the first connection port. One end of the pipe has a second flange, which is directly opposite to the first flange. The connecting stud connects the first flange and the second flange. The cutting groove is disposed 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 collapsible connector also includes an actuator, which is connected to the valve body and drivenly connected to 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 connection port.

7. The transport vehicle according to claim 1, characterized in that, The yield strength of the material used for the energy-saving connector is lower than that of the pipe and the tank; and / or The yield strength of the collapsible connector is less than 220 MPa, while the yield strength of the pipe and the tank is greater than 220 MPa.

8. The transport vehicle according to claim 7, characterized in that, The energy-saving connector is a stainless steel pipe fitting, the pipe 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.

9. The transport vehicle according to claim 1 or 2, characterized in that, The collapsible connector is provided with a bending part. When the transport vehicle is hit, the resulting impact force forms a stress concentration at the bending part, causing the collapsible connector to deform before the pipe and the tank. The collapsible connector is a bent pipe.

10. The transport vehicle according to claim 1 or 2, characterized in that, The energy-absorbing connector is a flexible component that can deform to absorb the impact force when the transport vehicle is hit.

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 or the body of the transport vehicle, and the yield strength of the valve box is less than the yield strength of the collapsible connector; the control valve is connected in series at the end of the loading and unloading pipeline away from the pipeline connection port and is located inside the valve box, and the control valve is used to control the on / off state of the loading and unloading pipeline.

12. The transport vehicle according to claim 11, characterized in that, 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 to the side wall of the box to enhance the load-bearing strength of the box; The yield strength of both the support column and the box body is less than the yield strength of the collapsible connector.

13. The transport vehicle according to claim 12, characterized in that, The support column includes a thin-walled steel column and a first filling layer. 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. The first filling layer fills the cavity. The first filling layer is aluminum foam and / or fire extinguishing agent.

14. The transport vehicle according to claim 12, characterized in that, The box includes a bottom plate, a door, and multiple side plates. The side plates are connected end to end to form a ring. The bottom plate and the door are respectively connected to both sides of the side plates. The bottom plate, the door, and the multiple side plates together form a hollow box. The side panel includes an inner side panel, an outer side panel, and a second filling layer. The inner side panel is disposed inside the outer side panel, and a sandwich is formed between the inner side panel and the outer side panel. The second filling layer fills the sandwich. The second filling layer is a profiled sheet and / or fire extinguishing agent; The support is connected to the outer side plate or the inner side plate.

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