AU2017370006B2

AU2017370006B2 - Tank truck

Info

Publication number: AU2017370006B2
Application number: AU2017370006A
Authority: AU
Inventors: Yuanxin He; Sheng Huang; Zhengxian HUANG; Qiangjun JIANG; Yongli Li; Fengwei LIU; Changle LV; Chuqiang Tang; Baolei Wang; Qi Wu; Zhenyan XIONG; Weiguo Xu; Qingyi YANG; Shuai Yang; Yongkui ZENG
Original assignee: CRRC Yangtze Co Ltd
Current assignee: CRRC Yangtze Co Ltd
Priority date: 2016-12-02
Filing date: 2017-07-20
Publication date: 2020-05-28
Anticipated expiration: 2037-07-20
Also published as: WO2018099096A1; AU2017370006A1

Abstract

Disclosed is a tank truck, comprising: a bogie (3); a storage tank (5); a pipeline safety system (7) connected to the storage tank; a traction bolster device (4) disposed on the bogie and comprising two traction bolsters respectively fixed to two ends of the storage tank, each of the traction bolsters comprising a traction beam, a crossbeam, a bolster beam, an end beam and a side beam; and a braking device (6, 2) disposed on the bogie and fixed to the traction bolster device and the storage tank. The crossbeam, the bolster beam and the end beam are fixed in parallel onto the traction beam; one end of the side beam is fixed to the end beam, and the other end thereof is fixed to the bolster beam; and the end of the storage tank is supported on the bolster beam and the crossbeam. The storage tank comprises a cylinder, an inner container disposed inside the cylinder, a thermal insulation layer disposed between the inner container and the cylinder, and a supporting device. With the tank truck, refrigerated liquefied natural gas can be transported through a railway, thereby reducing the transportation cost of the refrigerated liquefied natural gas and achieving long-distance transportation and high safety.

Description

TANK TRUCK

TECHNICAL FIELD [0001] The disclosure relates to the technical field of refrigerated liquefied gas, in particular to a tank truck.

BACKGROUND OF THE INVENTION [0002] Any discussion of the prior art throughout the specification should in no way be considered as an admission that such prior art is widely known or forms part of common general knowledge in the field.

[0003] LNG (liquefied natural gas) is a cryogenic liquid formed by liquefaction of natural gas after being subjected to impurity removal and cryogenically cooled to -162°C under normal pressure. There are four ways for transportation of LNG including pipeline transportation, ship transportation, road transportation and railway transportation. Since LNG is an inflammable, explosive and dangerous material, from the perspective of safety, only a very small number of countries in the world use railway to transport LNG, and China has not yet implemented LNG railway transportation.

[0004] China's natural gas production areas are mainly distributed in the northwestern region, and demands are concentrated in the southeast coastal cities. Due to the high cost and long cycle of construction of LNG pipeline network, domestically produced LNG is mainly transported by road vehicles or tank containers, and imported LNG is transported by sea. According to estimates, the cost of railway transportation of LNG in China is about 1/3 of the cost of road transportation, and the railway transportation has the advantages of large capacity, long distance, safety and reliability. Therefore, LNG railway transportation has a significant cost advantage. In the case that existing road transportation cannot meet the market demands, it is an efficient and low-cost option to transport LNG using the existing railway network.

SUMMARY OF THE INVENTION [0005] It is an object of the present invention to overcome or ameliorate at least one of the disadvantages of the prior art, or to provide a useful alternative. The present disclosure

2017370006 28 Apr 2020 provides in at least one embodiment a tank truck which solves the problems in the prior art that the existing road transportation has high transportation cost, short transportation distance and low safety and is not able to meet market demands.

[0006] Accordingly, one aspect of the present invention provides a tank truck comprising:

[0007] a bogie; a storage tank; a pipeline safety system connected to the storage tank; a traction bolster device disposed on the bogie, the traction bolster device including two traction bolsters respectively fixed at two ends of the storage tank, each of the two traction bolsters including a traction beam, a cross beam, a bolster beam, an end beam and a side beam; and a brake device disposed on the bogie and fixed on the traction bolster device and the storage tank. The cross beam, the bolster beam and the end beam are juxtaposedly fixed on the traction beam, and one end of the side beam is fixed on the end beam, and the other end of the side beam is fixed on the bolster beam, and the ends of the storage tank are supported on the bolster beam and the cross beam; and the storage tank includes a cylinder, an inner container disposed in the cylinder, a heat insulation layer disposed between the inner container and the cylinder, and a support device. The support device comprises a fixed support device and two sliding support devices. The fixed support device and the two sliding support devices are in contact with the inner container at one ends, and the other ends thereof are fixed on the cylinder. The fixed support device is disposed at a middle portion of the cylinder, and the fixed support device comprises four fixed support mechanisms fixed on the circumference of the cylinder. The two sliding support devices are respectively located on opposite sides of the fixed support device and are located at two ends of the cylinder, and each of the two sliding support devices comprises four sliding support mechanisms fixed on the circumference of the cylinder.

[0008] Preferably, the cylinder comprises a left outer casing cylinder, a right outer casing cylinder and two outer casing closures, and the left outer casing cylinder and the right outer casing cylinder are fixedly connected to form a sleeve, and the two outer casing closures are respectively fixed on opposite ends of the sleeve.

[0009] Preferably, the inner container further comprises an inner reinforcing ring fixed on an inner surface of the inner container, an anti-brush and anti-vortex plate fixed in the inner container, a pipe receiving chamber fixed on the inner container and a low temperature adsorbent box fixed on a closure of the inner container.

2017370006 28 Apr 2020 [0010] Preferably, the tank truck further comprise a monitoring system, and the monitoring system includes a data acquisition system, a data monitoring system and a data transmission bus, wherein the data acquisition system is configured to acquire parameters in the storage tank and transmit the parameters to the data monitoring system through the data transmission bus.

[0011] Preferably, an angle between two upper fixed support mechanisms of the four fixed support mechanisms is 90±10 degrees, and an angle between two lower fixed support mechanisms of the four fixed support mechanisms is 60 ± 10 degrees.

[0012] Preferably, an angle between two upper sliding support mechanisms of the four sliding support mechanisms is 90±10 degrees, and an angle between two lower sliding support mechanisms of the four sliding support mechanisms is 60 ± 10 degrees.

[0013] Preferably, the fixed support mechanism comprises a fixed glass fibre reinforced plastic, a fixed cover, a fixed reinforcing plate, a plurality of fixed reinforcing ribs and a fixed base;

[0014] a fixed cover through hole is defined in the cylinder, and the fixed reinforcing plate is fixed on a surface of the cylinder, and the fixed reinforcing plate is provided with a fixed cover perforation hole corresponding to the fixed cover through hole, and the fixed cover is fixed in the fixed cover through hole and the fixed cover perforation hole; the plurality of fixed reinforcing ribs are fixed on the fixed reinforcing plate at one ends thereof and fixed on the fixed cover at the other ends thereof to form a triangular support structure;

[0015] the fixed base is fixed on an outer surface of the inner container at a position opposite to the fixed cover through hole, and one end of the fixed glass fibre reinforced plastic is fixed in the fixed cover and the other end thereof is fixed on the fixed base.

[0016] Preferably, there are a plurality of fixed reinforcing plates stacked on the surface of the cylinder, and a size of the fixed reinforcing plate close to the surface of the cylinder is larger than that of the fixed reinforcing plate far away from the surface of the cylinder.

2017370006 28 Apr 2020 [0017] Preferably, the sliding support mechanism comprises a sliding cover, a sliding glass fibre reinforced plastic, a sliding reinforcing plate, a plurality of sliding reinforcing ribs and a sliding reinforcing block;

[0018] the sliding reinforcing plate is fixed on a surface of the cylinder, and the cylinder is provided with a sliding cover through hole and the sliding reinforcing plate is provided with a sliding cover perforation hole corresponding to the sliding cover through hole; the sliding cover is fixed in the sliding cover through hole and the sliding cover perforation hole;

[0019] one ends of the plurality of sliding reinforcing ribs are fixed on the sliding reinforcing plate, and the other ends thereof are fixed on the sliding cover to form a triangular supporting structure; the sliding reinforcing block is fixed on an outer surface of the inner container at a position opposite to the sliding cover through hole; and [0020] one end of the sliding glass fibre reinforced plastic is supported on the sliding cover, and the other end thereof is slidably supported on the sliding reinforcing block.

[0021] The beneficial effects of the application are as follows:

[0022] By providing a tank truck comprising a bogie, a storage tank, and a traction bolster device and a brake device fixed to the bogie, in which the traction bolster device including traction bolsters which include a traction beam, a cross beam, a bolster beam, an end beam and a side beam supports an end of the storage tank, the refrigerated liquefied gas can be transported by railway, thus reducing the transportation cost of the refrigerated liquefied gas, realising a long distance transportation with high safety, and solving the problems in the prior art that the existing road transportation has high transportation cost, short transportation distance and low safety and cannot meet the market demands.

[0023] Unless the context clearly requires otherwise, throughout the description and the claims, the words “comprise”, “comprising”, and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is to say, in the sense of “including, but not limited to”.

2017370006 28 Apr 2020

BRIEF DESCRIPTION OF THE DRAWINGS [0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present disclosure.

[0025] Fig. 1 is a schematic structural view of a tank truck according to a preferred embodiment of the present application;

[0026] Fig. 2 is a schematic structural view of a traction bolster device of the tank truck of Fig. 1;

[0027] Fig. 3 is a schematic structural view of a storage tank of the tank truck of Fig. 1;

[0028] Fig. 4 is a schematic view showing a structure of a cylinder of the storage tank of the tank truck of Fig. 3;

[0029] Fig. 5 is a schematic structural view of an inner container of the storage tank of the tank truck of Fig. 3;

[0030] Fig. 6 is a schematic structural view of a safety system of the tank truck of Fig. 1;

[0031] Fig. 7 is a schematic structural view of a monitoring system of the tank truck of Fig. 1;

[0032] Fig. 8 is a schematic cross-sectional view of the storage tank of the tank truck of Fig.

1;

[0033] Fig. 9 is an enlarged view of a fixed support mechanism of a support device of Fig. 8;

[0034] Fig. 10 is a top view of a fixed support mechanism of a support device of Fig. 1;

[0035] Fig. 11 is a schematic cross-sectional view of the storage tank of the tank truck of Fig.

1;

2017370006 28 Apr 2020 [0036] Fig. 12 is an enlarged view of a sliding support mechanism of the support device of Fig. 11; and [0037] Fig. 13 is a top view of a sliding support mechanism of the support device of Fig. 1.

DETAILED DESCRIPTION OF THE INVENTION [0038] Embodiments of the present application provide a tank truck, solving the technical problems of high cost, short transportation distance, poor safety, and low adaptability to the market demand involved with the prior art adopting the existing road transportation.

[0039] To solve the above technical problems, the general concept of the embodiments of the present disclosure is as follows.

[0040] A tank truck is provided including a bogie, a storage tank, and a traction bolster device and a brake device fixed on the bogie, and the traction bolster device including traction bolsters which include a traction beam, a cross beam, a bolster beam, an end beam and a side beam supports an end of the storage tank, so that the refrigerated liquefied gas is enabled to be transported by railway, which reduces the transportation cost of the refrigerated liquefied gas, realises a long transportation distance and a high safety, thus solving the technical problems of high cost, short transportation distance, poor safety, and inability to adapt to the market demand involved with the prior art adopting the existing road transportation.

[0041] In order to better understand the invention, the technical solutions thereof will be described in detail below in conjunction with the drawings and specific embodiments.

[0042] In order to solve the technical problems of high cost, short transportation distance, poor safety, and inability to adapt to the market demand involved with the prior art adopting the existing road transportation, the present application provides a tank truck. As shown in Fig. 1, the tank truck comprises: a coupler and draft gear 1, a hand brake device 2, a bogie 3, a traction bolster device 4, a storage tank 5, an air brake device 6, a pipeline safety system 7, and a monitoring system 8. The traction bolster device 4, the air brake device 6, and the hand brake device 2 are fixed to the bogie 3.

2017370006 28 Apr 2020 [0043] As shown in Fig. 2, the traction bolster device 4 is disposed on the bogie (not shown). The traction bolster device includes two traction bolsters respectively fixed on two ends of the storage tank.

[0044] In the embodiment, the traction bolster is an all-steel welded structure, and the main material thereof is selected from Q450NQR1 high-strength and weather-resistant steel.

[0045] Each of the two traction bolsters includes a traction beam 4B, auxiliary saddles 4A, and main saddles 4C. The auxiliary saddle 4A and the main saddle 4C are juxtaposedly fixed to the traction beam 4B for supporting the storage tank 5. In the present embodiment, a curvature of the main saddle 4C is larger than that of the auxiliary saddle 4A, and two auxiliary saddles 4A are located between two main saddles 4C. The main saddle 4C has a larger structural size and serves as a main support. The auxiliary saddle 4A has a smaller structural size and serves as an auxiliary support.

[0046] In other embodiments, two auxiliary saddles 4A and two main saddles 4C are not limited to the above positional relationship. Instead, two auxiliary saddles 4A may be located outside two main saddles 4C, or the auxiliary saddles 4A and the main saddles 4C are arranged alternatively. In addition, in other embodiments, the curvatures of the auxiliary saddle 4A and the main saddle 4C may be equal, and may be set as needed. The size and layout are determined according to the length-to-diameter ratio of the storage tank. To ensure an effective reinforcing effect of a closure on a cylinder of the storage tank, a distance A from the center of the saddle to a tangent point of the arc of the closure should not be greater than half of the diameter R of the cylinder (i.e. A< 0.5R).

[0047] A pad is disposed between the storage tank 5 and the auxiliary saddle 4A and the main saddle 4C. To ensure an effective reinforcing effect of the pad, a thickness of the pad should not be less than 0.6 times the thickness of the cylinder of the storage tank 5. The pad should be closely attached to the storage tank 5, and a welding hole should be formed when the pad has a large area. A wrap angle of the auxiliary saddle 4A and the main saddle 4C should not be less than 120° under normal conditions.

[0048] In the present embodiment, the traction bolster further includes an end beam 4E and a side beam 4D. The auxiliary saddle 4A, the main saddle 4C, and the end beam 4E are

2017370006 28 Apr 2020 juxtaposedly fixed on the traction beam 4B. One end of the side beam 4D is fixed to the end beam 4E, and the other end thereof is fixed to the main saddle 4C. The main saddle 4C serves as a first saddle of the storage tank, and a cross beam 4E serves as a second saddle of the storage tank. That is, one end of the storage tank is supported on two saddles, and the other end thereof is also supported on two saddles.

[0049] With the tank truck and the traction bolster device of the present application, the storage tank is supported by two traction bolsters which are provided with the auxiliary saddles 4A and the main saddles 4C at the same time, that is, supported by four saddles. On the one hand, a vertical load acting on each saddle is reduced by increasing the number of saddles; on the other hand, due to the relatively scattered saddle arrangement and more uniform load distribution, for horizontal containers with a large aspect ratio (L/D) and thin wall thickness, a distance between the main saddle and the auxiliary saddle can be adjusted so as to ensure an effective reinforcing effect of the closure on the cylinder, and also avoid the problems that the cylinder is seriously deformed and the stress is too large due to excessive span of the support, which exist in the prior art when a horizontal storage tank with a large aspect ratio (L/D) is supported by a double-saddle structure.

[0050] As shown in Fig. 3, the storage tank 5 includes a cylinder 20, an inner container 30 disposed within the cylinder 20, a heat insulation layer 5B and a support device disposed between the inner container 30 and the cylinder 20.

[0051] As shown in Fig. 4, the cylinder 20 includes a left outer casing cylinder A5, a right outer casing cylinder A9, two outer casing closures A2, a vacuum explosion-proof device A1, a normal temperature adsorbent cartridge A10, a reinforcing ring A8, a traction bolster top cover board A4, and an operation box A6. In the present embodiment, a steel plate as a main material of the cylinder 20 is 16MnDR and a forging as a main material is 1 GMnDIII forged steel.

[0052] The left outer casing cylinder A5 and the right outer casing cylinder A9 are fixedly connected to form a sleeve, and the two outer casing closures A2 are respectively fixed on opposite ends of the sleeve to form a sealed space. The vacuum explosion-proof device A1 and the normal temperature adsorbent cartridge A10 are fixed on the two outer casing closures A2. The reinforcing ring is disposed on an inner surface of the sleeve for increasing the strength of the sleeve. The traction bolster top cover board A4 is fixed on the sleeve so as to facilitate fixing

2017370006 28 Apr 2020 the cylinder 20 to the traction bolster device 4. The operation box A6 is fixed on the sleeve, and the operation box A6 is located at the bottom of the cylinder 20 in the middle position for protecting loading and unloading pipelines, safety and monitoring facilities, and the doors on the two sides of the box can be opened during loading and unloading LNG and during maintenance.

[0053] As shown in Fig. 5, the inner container 30 includes an inner container cylinder C3, an inner container closures C1 fixed at both ends of the inner container cylinder C3, and an inner reinforcing ring C7 fixed on an inner surface of the inner container cylinder C3, an anti-brush and anti-vortex plate C4 fixed within the inner container cylinder C3, a pipe receiving chamber C6 fixed to the inner container cylinder C3, and low-temperature adsorbent boxes C8 fixed on the inner container closures C1. In the present embodiment, the steel plate as a main material of the inner container 30 is 06Cr19Ni10 stainless steel, and the forging as a main material thereof is 06Cr19Ni1 Olli stainless steel.

[0054] The heat insulation layer 5B is a heat insulating material wrapped on an outer surface of the inner container 30, and the heat insulation material is formed by compounding, cutting and sewing, and customised according to a shape and size of the present product.

[0055] The inner and outer tank support member is a hollow cylindrical tubular structure machined by an epoxy glass fibre-reinforced plastic material, and has different specifications according to installation site and load-bearing form.

[0056] As shown in Fig. 6, the pipeline safety system 7 includes a vacuuming and measuring device 7A, a gas phase pipeline 7B, a loading and unloading pipeline 7C, a pressurised pipeline 7D, a differential pressure pipeline 7E, an overflow pipeline 7F, and an emergency control pipeline 7G. The pipeline safety system 7 is fixed in a lower operation box in the storage tank. The vacuuming and measuring device 7A is used for maintaining and detecting the degree of vacuum in the interlayer; the gas phase pipeline 7B is used for stabilising the pressure in the gas phase space at the top of the storage tank to ensure the safety of the storage tank; the loading and unloading pipeline 7C is used for loading and unloading refrigerated liquefied gas to and from the storage tank; the pressurised pipeline 7D is used for maintaining a positive pressure inside the storage tank to accelerate discharge; the differential pressure pipeline 7E is used for detecting a filling height of liquid inside the storage tank; the overflow pipeline 7F is

2017370006 28 Apr 2020 used for avoiding tank over-loading; and the emergency control pipeline 7G is used for safety protection in case of abnormal conditions.

[0057] Specifically, the loading and unloading pipeline 7C includes a liquid phase interface, a bottom inlet valve, an emergency shut-off valve, a top inlet valve, a check valve, and a pipe. The pressurised pipeline 7D includes an emergency shut-off valve, a booster liquid phase valve, and a booster liquid phase interface. The gas phase pipeline 7B includes a gas phase interface, a gas discharge valve, an emergency shut-off valve, an overpressure discharge valve, a combined safety valve, and a flame arrester. The differential pressure pipeline 7E includes a gas phase pipe, a liquid phase pipe, a pressure gauge, a level gauge, and a balance valve. The overflow pipeline includes an overflow pipe and a check valve. The vacuuming and measuring device includes a vacuuming valve, a vacuum isolation valve, and a vacuum gauge. The emergency control pipeline includes an air storage cylinder, a pressure reducing filter, and an air pipe.

[0058] As shown in Fig. 7, the monitoring system 8 is used to monitor a medium pressure, a liquid level state in the storage tank 5, and leakage conditions of the loading and unloading pipelines and the valves during the operation of the vehicle. The monitoring system 8 includes a data acquisition system 8B, a data monitoring system 8C, and a data transmission bus 8Afor connecting the data acquisition system 8B and the data monitoring system 8C. The data monitoring system 8C is usually installed in an escort room. The data acquisition system 8B is configured to acquire parameters in the storage tank 5 and transmit them to the data monitoring system 8C through the data transmission bus 8A, so as to learn the medium pressure, the liquid level state in the storage tank 5 and the leakage conditions of the loading and unloading pipeline and the valves.

[0059] The air brake device 6 is disposed on the bogie and fixed to the traction bolster device and the storage tank. The air brake device 6 comprises a 120-type control valve, a 203 mm χ 254 mm integral spinning sealed brake cylinder, an ST2-250 type automatic two-way brake shoe clearance adjuster, a KZW-Atype empty and load automatic adjusting device, and a 60-liter auxiliary air cylinder, a 34-liter and 11-liter air cylinders, a high friction coefficient synthetic brake shoes in accordance with TB/T2403-2010. The hand brake device 2 employs an NSW type hand brake. The coupler and draft gear 1 adopts a 17-type E-class steel coupler with a reinforced knuckle, a forged coupler yoke, an MT-2, HM-1 or HN-1 type buffer or a new type buffer. A nylon wear plate is mounted on a coupler support seat, the coupler yoke and the coupler yoke key

2017370006 28 Apr 2020 plate. The bogie 3 adopts a K5 or K6 type bogie. Since the coupler and draft gear 1, the hand brake device, the bogie 3, and the air brake device 6 have common configurations and structures of the Chinese railway freight cars, they will not be described in detail herein.

[0060] The support device includes a fixed support device 41 and two sliding support devices 42. The fixed support device 41 is disposed at a middle portion of the cylinder 20, and the two sliding support devices 42 are respectively located at opposite sides of the fixed support device 41 and are located at two ends of the cylinder 20.

[0061] The fixed support device 41 and the sliding support devices 42 are in contact with the inner container 30 at one end, and the other ends thereof are fixed on the cylinder 20 for transferring various loads between the inner container 30 and the cylinder 20 and sealing an interlayer space to achieve a function of blocking a thermal bridge effectively.

[0062] A shown in Figs. 8-10, the fixed support device 41 includes four fixed support mechanisms 411 that are fixed to the circumference of the cylinder 20. The angle between two upper fixed support mechanisms 411 of the four fixed support mechanisms 411 is 90±10 degrees, and the angle between two lower fixed support mechanisms 411 of the four fixed support mechanisms 411 is 60 ± 10 degrees.

[0063] In the present embodiment, the number of the fixed support mechanisms 411 is four, and they are disposed on the circumference of the cylinder 20. The fixed support mechanism 411 includes a fixed glass fibre-reinforced plastic 14, a fixed cover 11, a fixed reinforcing plate 12, a plurality of fixed reinforcing ribs 13, a fixed base 15, and a fixed reinforcing block 16.

[0064] The fixed reinforcing plate 12 is fixed to a surface of the cylinder 20 for increasing the strength of the cylinder 20. Specifically, the fixed reinforcing plate 12 is welded to the surface of the cylinder 20. The fixed reinforcing plate 12 may be plural. When the number of the fixed reinforcing plates 12 is plural, the fixed reinforcing plates 12 are stacked on the surface of the cylinder 20 and the size of the fixed reinforcing plate 12 close to the surface of the cylinder 20 is larger than the size of the fixed reinforcing plate 12 far away from the surface of the cylinder 20.

[0065] In this embodiment, there are two the fixed reinforcing plates 12, i.e., a first fixed reinforcing plate and a second fixed reinforcing plate. The first fixed reinforcing plate is disposed

2017370006 28 Apr 2020 between the second fixed reinforcing plate and the cylinder 20, and the size of the second fixed reinforcing plate is smaller than the size of the first fixed reinforcing plate. The fixing reinforcing plates 12 may be circular, elliptical, rectangular or of other shapes. Specifically, it can be made by a steel plate rolled into a circular arc shape according to a diameter of an outer casing to ensure close fit with the outer casing in assembly.

[0066] A fixed cover through hole 21 is defined in the cylinder 20, and a fixed cover perforation hole corresponding to the fixed cover through hole 21 is defined in the fixed reinforcing plate 12. The fixed cover 11 is fixed in the fixed cover through hole 21 and the fixed cover perforation hole for fixing the fixed cover. Specifically, the fixed cover 11 is welded to the fixed reinforcing plate 12 and the cylinder 20. The fixed cover 11 may specifically have a cylindrical tubular structure, with one end closed to form a cup shape, and may be formed by rolling a steel plate and then welding it to a circular bottom plate, or may be formed by a forge piece directly. Further, in the present embodiment, a height h between an end of the fixed cover 11 away from the cylinder 20 and the cylinder 20 is 120 mm to 140 mm.

[0067] One ends of the plurality of fixed reinforcing ribs 13 are fixed on the fixed reinforcing plate 12, and the other ends thereof are fixed on the end of the fixed cover 11 away from the cylinder 20 to form a triangular supporting structure, so as to increase the strength for fixing the fixed cover 11. Specifically, in the present embodiment, the number of the fixed reinforcing ribs 13 is four. The fixing reinforcing rib 13 is a groove-shaped molded piece or a forged piece, and can be fixed to the fixing reinforcing plate 12 and the fixed cover 11 by welding. The use of the plurality of fixed reinforcing ribs 13 not only meets the strength requirements, but also saves material and reduces weight.

[0068] The fixed reinforcing block 16 is fixed at a position on the outer surface of the inner container 30 opposite to the fixed cover through hole 21. Specifically, the fixed reinforcing block 16 is welded to the inner container 30 to increase the strength of the inner container 30. The number of the fixed reinforcing blocks 16 may be one or more, and may be specifically set as needed. When the strength of the inner container 30 is sufficient, the fixed reinforcing block 16 may not be provided.

[0069] When the fixed reinforcing block 16 is provided on the inner container 30, the fixed base 15 is fixed to the fixed reinforcing block 16, and when the fixed reinforcing block 16 is not

2017370006 28 Apr 2020 provided on the inner container 30, the fixed base 15 is directly fixed on the outer surface of the inner container 30 at a position opposite to the fixed cover through hole 21.

[0070] One end of the fixed glass fibre-reinforced plastic 14 is fixed in the fixed cover 11 and the other end thereof is fixed on the fixed base 15 so as to relatively fix the cylinder 20 and the inner container 30.

[0071] The above fixed support mechanism reinforces the fixed cover 11 by providing the fixed reinforcing plate 12 and the fixed reinforcing rib 13 as a combined reinforcing manner, thereby ensuring that the fixed cover device has sufficient strength to withstand various loads and has a simple structure and a light self-weight, thus solving the technical problems in the prior art that an insufficient strength is obtained when reinforcement is provided by a reinforcing plate in case that the volume of the tank and the amount of loading medium are large.

[0072] As shown in Figs. 11-13, each of the two sliding support devices 42 includes four sliding support mechanisms 420 fixed to the circumference of the cylinder 20, and an angle between two upper sliding support mechanisms 420 of the four sliding support mechanisms 420 is 90 ± 10 degrees, and the angle between two lower sliding support mechanisms 420 of the four sliding support mechanisms 420 is 60 ± 10 degrees.

[0073] In the present embodiment, the number of the sliding support mechanisms 420 is eight, and they are divided into two groups, which are respectively located at two ends of the cylinder 20 and disposed on the circumference of the cylinder 20. The sliding support mechanism 420 includes a sliding cover 421, a sliding glass fibre reinforced plastic 422, a sliding reinforcing plate 423, a plurality of sliding reinforcing ribs 424, and a sliding reinforcing block 425.

[0074] The sliding reinforcing plate 423 is fixed to a surface of the cylinder 20 for increasing the strength of the cylinder 20. Specifically, the sliding reinforcing plate 423 is welded to the surface of the cylinder 20. The number of the sliding reinforcing plates 423 may be one or plural.

[0075] A sliding cover through hole 426 is defined in the cylinder 20, and the sliding reinforcing plate 423 is formed with a sliding cover perforation hole corresponding to the sliding cover through hole. The sliding cover 421 is secured within the sliding cover through bore 426

2017370006 28 Apr 2020 and the sliding cover perforation hole. Specifically, the sliding cover 421 is welded to the sliding reinforcing plate 423 and the cylinder 20. The sliding cover 421 may specifically be a cylindrical tubular structure with one end closed to form a cup shape, and may be made by rolling a steel plate and then welding it to a circular bottom plate, or may be made directly by a forged piece. Further, in the present embodiment, a height h between one end of the sliding cover 421 away from the cylinder 20 and the cylinder 20 is 120 mm to 140 mm.

[0076] One ends of the plurality of sliding reinforcing ribs 424 are fixed on the sliding reinforcing plate 423, and the other ends thereof are fixed to the end of the sliding cover 421 away from the cylinder 20 to form a triangular supporting structure so as to increase the strength to fix the sliding cover 421. Specifically, in the present embodiment, the number of the sliding reinforcing ribs 424 is four. The sliding reinforcing rib 424 is a groove-shaped molded piece or a forged piece, and may be secured to the sliding reinforcing plate 423 and the sliding cover 421 by welding. The use of the plurality of sliding reinforcing ribs 424 not only meets the strength requirements, but also saves materials and reduces weight.

[0077] The sliding reinforcing block 425 is fixed on an outer surface of the inner container 30 at a position opposite to the sliding cover through hole 426. Specifically, the sliding reinforcing block 425 is welded to the inner container 30 to increase the strength of the inner container 30. The sliding reinforcing block 425 may be one or more, and may be provided as needed. When the strength of the inner container 30 is sufficient, the sliding reinforcing block 425 may not be provided.

[0078] When there are multiple sliding reinforcing blocks 425, the sliding reinforcing blocks 425 are stacked on the outer surface of the inner container 30, and the size of the sliding reinforcing block 425 close to the surface of the inner container 30 is larger than the size of the sliding reinforcing block 425 far away from the surface of the inner container 30.

[0079] In this embodiment, there are two sliding reinforcing blocks 425, specifically, a first sliding reinforcing block and a second sliding reinforcing block. The first sliding reinforcing block is disposed between the second sliding reinforcing block and the inner container 30, and the size of the second sliding reinforcing block is smaller than the size of the first sliding reinforcing block. The sliding reinforcing blocks 425 may be circular, elliptical, rectangular or of other

2017370006 28 Apr 2020 shapes. Specifically, it may be made by rolling a steel plate into a circular arc shape according to the diameter of an outer casing so as to ensure close fit with the outer casing in assembly.

[0080] The sliding glass fibre reinforced plastic 422 has one end connected to the sliding cover 421 and the other end slidably supported on the sliding reinforcing block 425. When the strength of the inner container 30 is sufficient and the sliding reinforcing block 425 is not provided, the other end of the sliding glass fibre reinforced plastic 422 is directly supported on the outer surface of the inner container 30.

[0081] The sliding support mechanism reinforces the sliding cover by providing the sliding reinforcing plate 423 and the sliding reinforcing rib 424 as a combined reinforcement manner, thereby ensuring that the sliding cover device has sufficient strength to withstand various loads and has a simple structure and light self-weight, which solves the technical problems in the prior art that an insufficient strength is obtained by using a reinforcing plate for reinforcement in case that the volume of the tank and the amount of the loading medium are large.

[0082] The support device comprises a fixed support device consisting of four fixed support mechanisms and two sliding support devices respectively located on opposite sides of the fixed support device, and each of the two sliding support devices comprises four fixed supporting mechanism, thereby forming a 12-point support device. The fixed support device is disposed in the middle of the cylinder, and the two sliding support devices are supported at two ends of the cylinder, so as to ensure that the storage tank has sufficient strength to bear various loads and the deflection of the body of the storage tank can be reduced. It solves the problems in the prior art that the deflection is increased and an instability failure may be incurred to the body of the storage tank due to a large distance between the fixed end and the sliding end of the glass fibre reinforced plastic support device, and that there is an insufficient strength when the volume of the tank and the amount of the loading medium are large.

[0083] Reference will be made to the following example.

[0084] The main technical parameters of the tank truck in the example are as follows:

self-weight (t)

load (t)

weight per metre (t/m)

vehicle length (mm)

length between truck centers (mm)

maximum speed (km/h)

axle load (t)

2017370006 28 Apr 2020

<47

>45

4.74

20466

15000

120

23

[0085] As can be seen from the above example, the load (carrying capacity) of the tank truck is larger than or equal to 45 tons. The experimental data show that the tank truck has doubled its single truck running capacity compared with the existing road tanker; in addition, the maximum running speed arrives at 120 km/h. It is estimated that, when a transportation distance exceeds 1000 kilometers, the cost for transportation of LNG by road is about 0.9 Chinese yuan/ton-km, and the cost for transportation of LNG by railway tank container is about 0.45 Chinese yuan/tonkm. If a tank truck is used for transportation, the cost can be reduced to 0.35 Chinese yuan/tonkm, reducing transportation cost.

[0086] By providing a tank truck comprising a bogie, a storage tank, and a traction bolster device and a brake device fixed to the bogie, in which the traction bolster device including traction bolsters which include a traction beam, a cross beam, a bolster beam, an end beam and a side beam supports an end of the tank truck, the refrigerated liquefied gas can be transported by railway, thus reducing the transportation cost of the refrigerated liquefied gas, realising a long distance transportation with high safety, and solving the problems in the prior art that the existing road transportation has high transportation cost, short transportation distance and low safety and is not able to meet market demands.

[0087] In addition, the tank truck is provided with a monitoring system 8 for monitoring a pressure of medium, a liquid level in the tank truck as well as leakage conditions of the loading and unloading pipelines and the valves, so as to facilitate obtaining real-time knowledge of dynamic conditions of the tank truck.

[0088] While the preferred embodiments of the disclosure have been described, those skilled in the art can made other modifications and changes to the embodiments once learning the general concept of the invention. Therefore, the appended claims are intended to be interpreted as covering the preferred embodiments and all other modifications and changes falling within the scope of the invention.

[0089] It is apparent that those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. Thus, it is

2017370006 28 Apr 2020 intended that the present invention covers these modifications and variations if they fall within the scope of the claims of the invention and their equivalents.

Claims

1. A tank truck, comprising:

a bogie;

a storage tank;

a pipeline safety system connected to the storage tank;

a traction bolster device disposed on the bogie, the traction bolster device including two traction bolsters respectively fixed at two ends of the storage tank, each of the two traction bolsters including a traction beam, a cross beam, a bolster beam, an end beam and a side beam; and a brake device disposed on the bogie and fixed on the traction bolster device and the storage tank;

wherein the cross beam, the bolster beam and the end beam are juxtaposedly fixed on the traction beam, and one end of the side beam is fixed on the end beam, and the other end of the side beam is fixed on the bolster beam, and the ends of the storage tank are supported on the bolster beam and the cross beam; and the storage tank includes a cylinder, an inner container disposed in the cylinder, a heat insulation layer disposed between the inner container and the cylinder, and a support device;

wherein the support device comprises a fixed support device and two sliding support devices;

the fixed support device and the two sliding support devices are in contact with the inner container at one ends, and the other ends thereof are fixed on the cylinder;

the fixed support device is disposed at a middle portion of the cylinder, and the fixed support device comprises four fixed support mechanisms fixed on the circumference of the cylinder; and the two sliding support devices are respectively located on opposite sides of the fixed support device and are located at two ends of the cylinder, and each of the two sliding support devices comprises four sliding support mechanisms fixed on the circumference of the cylinder.

2. The tank truck according to claim 1, wherein the cylinder comprises a left outer casing cylinder, a right outer casing cylinder and two outer casing closures, and the left outer casing cylinder and the right outer casing cylinder are fixedly connected to form a sleeve, and the two outer casing closures are respectively fixed on opposite ends of the sleeve.

3. The tank truck according to claim 1 or 2, wherein the inner container further comprises an inner reinforcing ring fixed on an inner surface of the inner container, an anti-brush and anti-

2017370006 28 Apr 2020 vortex plate fixed in the inner container, a pipe receiving chamber fixed on the inner container and a low temperature adsorbent box fixed on a closure of the inner container.

4. The tank truck according to any one of claims 1 to 3, further comprising a monitoring system, and the monitoring system includes a data acquisition system, a data monitoring system and a data transmission bus, wherein the data acquisition system is configured to acquire parameters in the storage tank and transmit the parameters to the data monitoring system through the data transmission bus.

5. The tank truck according to any one of claims 1 to 4, wherein an angle between two upper fixed support mechanisms of the four fixed support mechanisms is 90±10 degrees, and an angle between two lower fixed support mechanisms of the four fixed support mechanisms is 60 ± 10 degrees.

6. The tank truck according to any one of claims 1 to 4, wherein an angle between two upper sliding support mechanisms of the four sliding support mechanisms is 90± 10 degrees, and an angle between two lower sliding support mechanisms of the four sliding support mechanisms is 60 ± 10 degrees.

7. The tank truck according to any one of claims 1 to 6, wherein the fixed support mechanism comprises a fixed glass fibre reinforced plastic, a fixed cover, a fixed reinforcing plate, a plurality of fixed reinforcing ribs and a fixed base;

a fixed cover through hole is defined in the cylinder, and the fixed reinforcing plate is fixed on a surface of the cylinder, and the fixed reinforcing plate is provided with a fixed cover perforation hole corresponding to the fixed cover through hole, and the fixed cover is fixed in the fixed cover through hole and the fixed cover perforation hole; the plurality of fixed reinforcing ribs are fixed on the fixed reinforcing plate at one ends thereof and fixed on the fixed cover at the other ends thereof to form a triangular support structure;

the fixed base is fixed on an outer surface of the inner container at a position opposite to the fixed cover through hole, and one end of the fixed glass fibre reinforced plastic is fixed in the fixed cover and the other end thereof is fixed on the fixed base.

8. The tank truck according to claim 7, wherein there are a plurality of fixed reinforcing plates stacked on the surface of the cylinder, and a size of the fixed reinforcing plate close to the

2017370006 28 Apr 2020 surface of the cylinder is larger than that of the fixed reinforcing plate far away from the surface of the cylinder.

9. The tank truck according to any one of claims 1 to 8, wherein the sliding support mechanism comprises a sliding cover, a sliding glass fibre reinforced plastic, a sliding reinforcing plate, a plurality of sliding reinforcing ribs and a sliding reinforcing block;

the sliding reinforcing plate is fixed on a surface of the cylinder, and the cylinder is provided with a sliding cover through hole and the sliding reinforcing plate is provided with a sliding cover perforation hole corresponding to the sliding cover through hole; the sliding cover is fixed in the sliding cover through hole and the sliding cover perforation hole;

one ends of the plurality of sliding reinforcing ribs are fixed on the sliding reinforcing plate, and the other ends thereof are fixed on the sliding cover to form a triangular supporting structure; the sliding reinforcing block is fixed on an outer surface of the inner container at a position opposite to the sliding cover through hole; and one end of the sliding glass fibre reinforced plastic is supported on the sliding cover, and the other end thereof is slidably supported on the sliding reinforcing block.