Liquid ammonia tank truck for liquid ammonia transportation

Abstract

The present invention discloses a liquid ammonia tank truck for transporting liquid ammonia, and relates to the technical field of liquid ammonia tank trucks. The present invention comprises a liquid ammonia tank truck body, a protective cylinder fixedly mounted on the liquid ammonia tank truck body, a receiving groove for mounting the tank body being provided through the protective cylinder, two sets of shielding components being provided on the protective cylinder, a rotating component for driving the two sets of shielding components to slide relative to each other, a spray pipe being provided in the receiving groove within the protective cylinder for rotation relative to the tank body, a driving component for driving the spray pipe to rotate back and forth along the outer wall of the tank body, a plurality of infrared thermal imagers with detection ends facing the tank body being provided at intervals on the spray pipe, and a conveying component connected to the spray pipe being provided on the liquid ammonia tank truck body. The present invention can promptly detect leakage of liquid ammonia in the tank body through the coordination of multiple sets of components, and take shielding and neutralization measures to achieve dilution of the liquid ammonia, prevent the leakage of liquid ammonia from causing harm to personnel, and reduce the risk of liquid ammonia leakage.

Description

Technical Field

[0001] The invention belongs to the field of liquid ammonia tank trucks, and in particular relates to a liquid ammonia tank truck used for transporting liquid ammonia. Background Art

[0002] Liquid ammonia holds a key position in the modern industrial system. In agriculture, it is the core raw material for nitrogen fertilizer production and plays an irreplaceable role in increasing global food production. As the world's population continues to grow, the demand for food continues to rise, prompting the expansion of the fertilizer industry and, in turn, significantly increasing the demand for liquid ammonia. In the chemical industry, liquid ammonia is widely used in the production of a variety of important chemical products such as nitric acid, soda ash, and nitrogen-containing inorganic salts. It is the foundation for the smooth operation of many chemical industry chains. Existing liquid ammonia is mostly transported by liquid ammonia tank trucks. However, these existing liquid ammonia tank trucks are prone to violent shaking of the liquid ammonia solution within the tank, causing temperature and pressure increases, which can easily create a risk of leakage.

[0003] Chinese patent publication number CN220688776U discloses a liquid ammonia tanker for transporting liquid ammonia. The device uses a buffer spring in the middle of the buffer assembly to prevent the tank assembly and the liquid ammonia solution therein from vibrating excessively during transportation, thereby reducing the shaking of the tank assembly and the liquid ammonia solution therein, and preventing leakage and potential hazards caused by the increase in internal temperature and pressure due to violent shaking of the liquid ammonia solution within the tank assembly. However, the device still has some shortcomings when used:

[0004] First, when the device is exposed to external factors and liquid ammonia leaks from the tank, the liquid ammonia in the tank will spray out under pressure, causing pollution and even personal injury.

[0005] Secondly, when liquid ammonia leaks from the tank, the leaked liquid ammonia cannot be diluted in time.

[0006] In view of this, the present invention is proposed. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a liquid ammonia tank truck for transporting liquid ammonia, thereby solving the problems raised in the above-mentioned background technology.

[0008] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0009] A liquid ammonia tank truck for transporting liquid ammonia comprises: a liquid ammonia tank truck body, a tank body, and a pressure sensor arranged on the tank body, a protective cylinder, which is fixedly mounted on the liquid ammonia tank truck body, the protective cylinder being penetrated by a receiving groove for mounting the tank body, the protective cylinder being provided with two groups of shielding components that can shield the receiving groove and slide relatively along its axis, the protective cylinder being provided with a rotating component that drives the two groups of shielding components to slide relatively along the axis of the protective cylinder, the shielding component comprising a sliding plate, a shielding cloth and a rubber block, the sliding plate being slidably arranged on the protective cylinder, the two ends of the shielding cloth being fixedly connected to the sliding plate and the protective cylinder respectively, the rubber block being fixedly connected to an end of the sliding plate facing away from the shielding cloth, the protective cylinder being provided with a second slide groove for the sliding plate to slide, and the rotating component being configured to drive the sliding plate to slide along the second slide groove;

[0010] A spray pipe is arranged in the receiving groove inside the protective cylinder so as to rotate relative to the tank body. The spray pipe and the protective cylinder are coaxially arranged. The protective cylinder is provided with a driving component for driving the spray pipe to reciprocate along the outer wall of the tank body. A plurality of infrared thermal imagers with detection ends facing the tank body are arranged at intervals on the spray pipe. The liquid ammonia tank truck body is provided with a conveying component connected to the spray pipe.

[0011] Optionally, the sliding plate is fixedly connected to a storage cylinder for holding slaked lime powder on the side facing the accommodating groove, and a through opening is penetrated through the end of the storage cylinder facing the tank body, and a first rotating shaft is connected to the inner thread of the storage cylinder, and the first rotating shaft is fixedly connected to a baffle for blocking the through opening through multiple connecting rods, and one end of the first rotating shaft extends to the outer wall of the storage cylinder and is sleeved with a second gear, and the storage cylinder is rotatably connected to the second rotating shaft, and the second rotating shaft is sleeved with a third gear meshing with the second gear, and the inner wall of the protective cylinder is fixedly connected to a second rack meshing with the third gear, and the second rack is coaxially arranged with the second rotating shaft.

[0012] Optionally, at least one limiting protrusion is fixedly connected to the inner wall of the storage tube to limit the baffle at the opening.

[0013] Optionally, the rotating assembly includes:

[0014] Two third rotating shafts are arranged in the protective cylinder for relative rotation, and the two third rotating shafts are fixedly connected to a driving rod whose other end is fixedly connected to a mounting plate, the two driving rods are staggered, and the mounting plate is an L-shaped structure. The mounting plates on the two driving rods are in the same horizontal plane, and the mounting plates on the two driving rods are respectively fixedly connected to the sliding plates on the two groups of the shielding assemblies, and the two third rotating shafts are sleeved with a first bevel gear;

[0015] a fourth rotating shaft, which is rotatably mounted on the protective cylinder, wherein a first end of the fourth rotating shaft extends to an outer wall of the protective cylinder, a second motor is fixedly connected to the protective cylinder to drive the first end of the fourth rotating shaft to rotate, and a third bevel gear is sleeved on the second end of the fourth rotating shaft;

[0016] A fifth rotating shaft is rotatably arranged in the protective tube, and second bevel gears meshing with the third bevel gear and the two first bevel gears are sleeved on both ends of the fifth rotating shaft.

[0017] Optionally, a first sealing gasket is relatively fixedly connected along the sliding plate in the second slide groove, the first sealing gasket is fixedly connected to the protective tube and arranged along the length direction of the second slide groove, and the first sealing gasket is fitted with the sliding plate and the shielding cloth.

[0018] Optionally, the protective tube has two grooves relatively embedded in it along the sliding plate, the two grooves are connected to the second slide groove, and multiple groups of elastic mechanisms are fixedly installed in the two grooves. The movable ends of the elastic mechanisms are fixedly connected to a second sealing gasket that can fit with the sliding plate and the baffle, and the second sealing gasket is arranged along the length direction of the second slide groove.

[0019] Optionally, the first end of the spray pipe is slidably arranged on the inner wall of the protective cylinder, the protective cylinder is provided with a first sliding groove for sliding the spray pipe, the second end of the spray pipe extends to the outer wall of the protective cylinder, and the driving assembly includes:

[0020] a first gear, which is sleeved and fixedly connected to the second end of the spray pipe;

[0021] a first rack, which is slidably mounted on the outer wall of the protective tube, meshing with the first gear, and a movable plate is vertically and fixedly connected to the first rack, wherein a movable groove is provided on the movable plate along its length;

[0022] The first end of the Z-shaped rod is movably arranged in the movable groove, the protective tube is fixedly connected to a first motor, and the driving end of the first motor is fixedly connected to the second end of the Z-shaped rod.

[0023] Optionally, the conveying assembly includes:

[0024] A water pump is fixedly mounted on the liquid ammonia tank truck body, the water inlet end of the water pump is connected to a water tank fixedly mounted on the liquid ammonia tank truck body, the discharge end of the water pump is connected to the second end of the spray pipe through a connecting pipe, and the connecting pipe and the spray pipe are connected through a rotary joint.

[0025] Optionally, partitions for placing the shielding cloth are relatively fixedly connected to both sides of the protective tube.

[0026] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described below at the same time:

[0027] 1. The system is equipped with a rotating assembly, a driving assembly, a conveying assembly, an infrared thermal imager, and a shielding assembly. The shielding assembly can shield the holding tank, and at the same time, cooperate with the spray pipe, the conveying assembly, and the driving assembly to dilute the liquid ammonia on the tank. The overall structure is simple to operate and has a high degree of automation. It can promptly detect the leakage of liquid ammonia in the tank, and take shielding and neutralization measures to achieve the dilution of the liquid ammonia, preventing the leakage of liquid ammonia from causing harm to personnel and reducing the risk of liquid ammonia leakage.

[0028] 2. The storage cylinder, the first rotating shaft, the baffle, the through-port, and the second rack are provided. Through the cooperation of the storage cylinder, the through-port and the second rack, when liquid ammonia leaks, the slaked lime powder can react with the liquid ammonia, playing a certain emergency treatment role and reducing the harm caused by the liquid ammonia leakage;

[0029] 3. By providing an elastic mechanism, a first sealing gasket, and a second sealing gasket, the sealing performance of the protective tube is greatly improved, ensuring that foreign matter can be effectively prevented from entering and internal matter can be prevented from leaking under various working conditions.

[0030] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings described below are only some embodiments. A person skilled in the art can derive other drawings based on these drawings without inventive effort. In the drawings:

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 It is a front view of the present invention;

[0034] Figure 3 This is a schematic structural diagram of the protective tube of the present invention;

[0035] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at A in the middle;

[0036] Figure 5 This is a schematic diagram of the structure inside the protective tube of the present invention;

[0037] Figure 6This is a schematic structural diagram of the infrared thermal imager and the spray pipe of the present invention;

[0038] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure at B in the middle;

[0039] Figure 8 This is a structural diagram of the storage cylinder, the first rotating shaft, the second gear, the second rotating shaft and the third gear of the present invention;

[0040] Figure 9 This is a schematic structural diagram of the opening, baffle and connecting rod of the present invention;

[0041] Figure 10 This is a schematic structural diagram of the shielding assembly of the present invention;

[0042] Figure 11 It is a structural schematic diagram of the driving rod and the mounting plate of the present invention;

[0043] Figure 12 For the present invention Figure 11 Schematic diagram of the enlarged structure at C in the middle;

[0044] Figure 13 Schematic diagram of the structure of the first sealing gasket and the second sealing gasket of the present invention.

[0045] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0046] 1. Liquid ammonia tank truck body; 2. Protective tube; 3. First sealing gasket; 4. Elastic mechanism; 5. Storage tube; 6. Rotating assembly; 61. Driving rod; 62. Mounting plate; 63. First bevel gear; 64. Fifth rotating shaft; 65. Second bevel gear; 66. Third bevel gear; 67. Fourth rotating shaft; 68. Second motor; 69. Third rotating shaft; 7. Shielding assembly; 71. Shielding cloth; 72. Sliding plate; 73. Rubber block; 8. Conveying assembly; 81. Water tank; 82. Water pump; 83. Connecting pipe; 84. Fixing plate; 9. Driving assembly; 91. First motor; 9 2. Movable groove; 93. Movable plate; 94. Z-shaped rod; 95. First rack; 96. First gear; 10. Partition; 11. Spray pipe; 12. Rotary joint; 13. Limiting protrusion; 14. Tank body; 15. First slide groove; 16. Infrared thermal imager; 17. Second slide groove; 18. Second rack; 19. Second sealing gasket; 20. Tank body; 21. First rotating shaft; 22. Second gear; 23. Second rotating shaft; 24. Third gear; 25. Connecting rod; 26. Baffle; 27. Through port; 28. Connecting pad; 29. Pressure sensor; 30. Receiving groove.

[0047] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0048] The present invention will now be described in further detail with reference to the accompanying drawings.

[0049] See also Figure 1-13 As shown, in this embodiment, a liquid ammonia tank truck for transporting liquid ammonia is provided, including a liquid ammonia tank truck body 1, a tank body 14, and a pressure sensor 29 arranged on the tank body 14, a protective cylinder 2, which is fixedly installed on the liquid ammonia tank truck body 1, and the protective cylinder 2 is provided with a receiving groove 30 for installing the tank body 14. Two groups of shielding components 7 that can shield the receiving groove 30 are provided on the protective cylinder 2 and slide relative to each other along its axis. The protective cylinder 2 is provided with a rotating component 6 that drives the two groups of shielding components 7 to slide relative to each other along the axis of the protective cylinder 2. The shielding component 7 includes a sliding plate 72, a shielding cloth 71 and a rubber block 73. The sliding plate 72 is slidably arranged on the protective cylinder 2, and the two ends of the shielding cloth 71 are respectively connected to the sliding plate 72 and the rubber block 73. The protective cylinder 2 is fixedly connected, and the rubber block 73 is fixedly connected to the end of the sliding plate 72 away from the shielding cloth 71. The protective cylinder 2 is provided with a second slide groove 17 for the sliding plate 72 to slide, and the rotating component 6 is configured to drive the sliding plate 72 to slide along the second slide groove 17. The spray pipe 11 is arranged in the receiving groove 30 in the protective cylinder 2 for rotation relative to the tank body 14. The spray pipe 11 is coaxially arranged with the protective cylinder 2. A driving component 9 is provided on the protective cylinder 2 for driving the spray pipe 11 to reciprocate along the outer wall of the tank body 14. A plurality of infrared thermal imagers 16 with detection ends facing the tank body 14 are arranged at intervals on the spray pipe 11. The liquid ammonia tank truck body 1 is provided with a conveying component 8 connected to the spray pipe 11.

[0050] Specifically, in this embodiment, in the initial state, the shielding component 7 does not shield the receiving groove 30 (see Figure 5As shown), the tank body 14 is located in the receiving tank 30. At the same time, the pressure sensor 29, the rotating assembly 6, the conveying assembly 8, the infrared thermal imager 16 and the driving assembly 9 are all controlled by the control mechanism on the liquid ammonia tank truck body 1. The spray pipe 11 is provided with a plurality of drainage holes arranged toward the tank body 14 along its length. When the tank body 14 needs to be cooled, water can be conveyed to the spray pipe 11 through the conveying assembly 8, so that the water is discharged to the outer wall of the tank body 14 along the drainage holes on the spray pipe 11. At the same time, the spray pipe 11 is driven back and forth by the driving assembly 9. The spray pipe 11 rotates back and forth along the outer wall of the tank body 14, so that water can be evenly sprayed onto the outer wall of the tank body 14 to achieve the effect of cooling. When liquid ammonia leaks in the tank body 14, the pressure sensor 29 senses it and sends a signal to the external control mechanism. The external control mechanism controls the rotation component 6 to start, and the rotation component 6 drives the sliding plates 72 of the two sets of shielding components 7 to slide relative to each other in the second slide groove 17 of the protective tube 2, so that the shielding cloth 71 is unfolded. When the sliding plates 72 slide to the specified position, the rubber blocks 73 on the two sliding plates 72 fit on the protective tube 2. Together, the shielding component 7 shields the containing tank 30 to prevent the liquid ammonia leaking from the tank body 14 from spraying out to the outside to avoid personal injury. Then, the external control mechanism drives the component 9 to drive the spray pipe 11 to rotate back and forth, and the infrared thermal imager 16 scans the outer wall of the tank body 14. When liquid ammonia leaks, the temperature of the leakage area will be lower than the surrounding environment due to the heat absorption of liquid ammonia vaporization. The infrared thermal imager 16 forms a thermal image by detecting the difference in thermal radiation on the surface of the object, thereby showing the temperature abnormal area, helping to find the liquid ammonia leakage point. When liquid ammonia is found, When the leakage point is reached, the driving component 9 stops operating, so that the drainage hole of the spray pipe 11 is relative to the leakage point of the tank body 14. At this time, the conveying component 8 is started by the external control mechanism to convey water to the inside of the spray pipe 11 and spray it from the drainage hole to the leakage point of the tank body 14 to achieve the dilution treatment of the liquid ammonia. The overall structure is simple to operate and has a high degree of automation. It can timely detect the leakage of liquid ammonia in the tank body 14, and take shielding and neutralization measures to achieve the dilution treatment of the liquid ammonia, prevent the leakage of liquid ammonia from causing harm to personnel, and reduce the risk of liquid ammonia leakage.

[0051] It should be noted that, in this embodiment, the receiving groove 30 of the protective tube 2 has a certain storage space to facilitate the storage of liquid ammonia. The shielding cloth 71 can be a thickened PVC waterproof cloth. At the same time, the infrared thermal imager 16 needs to add protective measures when in use to avoid damage. Secondly, in this embodiment, the driving component 9 and the rotating component 6 are relatively arranged at the two ends of the protective tube 2.

[0052] In this embodiment, if Figure 6 、 Figure 7 、 Figure 8 and Figure 9As shown, the sliding plate 72 is fixedly connected to the side of the receiving groove 30 with a storage cylinder 5 that can hold slaked lime powder. The storage cylinder 5 is provided with a through-hole 27 at one end facing the tank body 14. The storage cylinder 5 is internally threaded with a first rotating shaft 21. The first rotating shaft 21 is fixedly connected to a baffle 26 that can block the through-hole 27 through multiple connecting rods 25. One end of the first rotating shaft 21 extends to the outer wall of the storage cylinder 5 and is sleeved with a second gear 22. The storage cylinder 5 is rotatably connected to the second rotating shaft 23. The second rotating shaft 23 is sleeved with a third gear 24 that meshes with the second gear 22. The inner wall of the protective cylinder 2 is fixedly connected to the second rack 18 that meshes with the third gear 24. The second rack 18 is coaxially arranged with the second rotating shaft 23. Specifically, when the sliding plate 72 moves , the storage cylinder 5 moves accordingly, and when the third gear 24 engages with the second rack 18, the third gear 24 drives the second gear 22 and the second rotating shaft 23 to rotate, and the first rotating shaft 21 rotates to cause the baffle 26 to open the through opening 27, and the slaked lime powder can be spilled from the through opening 27 and fall on the outer wall of the tank body 14 one after another as the sliding plate 72 rotates. When liquid ammonia leaks, the slaked lime powder can react with the liquid ammonia, playing a certain emergency treatment role and reducing the harm caused by the leakage of liquid ammonia. It should be noted that an injection port and a sealing cover for sealing the injection port are provided on the storage cylinder 5 to facilitate the filling of slaked lime powder into the storage cylinder 5; further, at least one limiting protrusion 13 is fixedly connected to the inner wall of the storage cylinder 5 to limit the baffle 26 to the through opening 27.

[0053] In this embodiment, if Figure 2 、 Figure 6 、 Figure 10 、 Figure 11 and Figure 12As shown, the rotating assembly 6 includes two third rotating shafts 69, which are arranged to rotate relative to each other in the protective cylinder 2. The two third rotating shafts 69 are fixedly connected to a driving rod 61 whose other end is fixedly connected to a mounting plate 62. The two driving rods 61 are staggered, and the mounting plate 62 is an L-shaped structure. The mounting plates 62 on the two driving rods 61 are in the same horizontal plane. The mounting plates 62 on the two driving rods 61 are respectively fixedly connected to the sliding plates 72 on the two sets of shielding assemblies 7. The two third rotating shafts 69 are each sleeved with a first bevel gear 63. The fourth rotating shaft 67 is rotatably arranged on the protective cylinder 2. The first end of the fourth rotating shaft 67 extends to the outer wall of the protective cylinder 2. The protective cylinder 2 is fixedly connected to a second motor 68 that drives the first end of the fourth rotating shaft 67 to rotate. The second end of the fourth rotating shaft 67 is sleeved with a third bevel gear 66. The fifth rotating shaft 64 is rotatably arranged in the protective cylinder 2. Both ends of the fifth rotating shaft 64 are sleeved with a second bevel gear 65 that meshes with the third bevel gear 66 and the two first bevel gears 63. Specifically, when it is necessary to drive When the shielding assembly 7 moves, the fourth rotating shaft 67 is driven to rotate by the second motor 68, and the third bevel gear 66 on the fourth rotating shaft 67 drives the second bevel gear 65 at the bottom of the third rotating shaft 69 to rotate, thereby causing the second bevel gear 65 at the top of the third rotating shaft 69 to rotate, thereby causing the first bevel gear 63 on the two third rotating shafts 69 to rotate, and the first bevel gear 63 drives the third rotating shaft 69 to rotate, so that the driving rod 61 drives the mounting plate 62 and the sliding plate 72 to slide in the second sliding groove 17, thereby realizing the opening and closing of the shielding assembly 7 to the accommodating groove 30. It should be noted that in this embodiment, the two third rotating shafts 69 are coaxially arranged with the sliding plate 72, and the second bevel gear 65 is sleeved on both ends of the fifth rotating shaft 64. The second bevel gear 65 at the top of the fifth rotating shaft 64 is meshed with the first bevel gears 63 on the two third rotating shafts 69, and the second bevel gear 65 at the bottom of the fifth rotating shaft 64 is meshed with the third bevel gear 66. Of course, the diameters between the multiple bevel gears can be adjusted according to actual conditions and are not restricted here.

[0054] In this embodiment, if Figure 5 and Figure 13As shown, the second slide groove 17 is relatively fixedly connected to the sliding plate 72 with the first sealing gasket 3, the first sealing gasket 3 is fixedly connected to the protective tube 2, and is arranged along the length direction of the second slide groove 17, the first sealing gasket 3 is fitted with the sliding plate 72 and the shielding cloth 71, specifically, the first sealing gasket 3 is fitted with the sliding plate 72 and the shielding cloth 71, and during the sliding process of the sliding plate 72, the sliding plate 72 and the baffle 26 can continue to fit with the first sealing gasket 3 and always maintain a sealed state to prevent external impurities from entering the receiving groove 30 and prevent liquid ammonia leaked from the tank body 14 in the protective tube 2 from splashing to the outside; further, the protective tube 2 has two groove bodies 20 relatively embedded in it along the sliding plate 72, and the two groove bodies 20 is connected to the second slide groove 17, and multiple groups of elastic mechanisms 4 are fixedly installed in the two groove bodies 20. The movable end of the elastic mechanism 4 is fixedly connected to the second sealing gasket 19 that can fit with the sliding plate 72 and the baffle 26. The second sealing gasket 19 is arranged along the length direction of the second slide groove 17. The elastic mechanism 4 makes the second sealing gasket 19 fit with the sliding plate 72 and the baffle 26. When the sliding plate 72 moves, the second sealing gasket 19 can adaptively adjust to further enhance the sealing effect. The double sealing structure greatly improves the sealing performance of the protective tube 2, ensuring that it can effectively prevent foreign matter from entering and internal matter from leaking under various working conditions. It should be noted that the elastic mechanism 4 is a prior art and will not be described here.

[0055] In this embodiment, if Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6As shown, the first end of the spray pipe 11 is slidably arranged on the inner wall of the protective cylinder 2, and the protective cylinder 2 is provided with a first slide groove 15 for the spray pipe 11 to slide. The second end of the spray pipe 11 extends to the outer wall of the protective cylinder 2. The driving assembly 9 includes a first gear 96, which is sleeved and fixedly connected to the second end of the spray pipe 11, a first rack 95, which is slidably arranged on the outer wall of the protective cylinder 2, and the first rack 95 is meshed with the first gear 96. A movable plate 93 is vertically and fixedly connected to the first rack 95. A movable groove 92 is penetrated along the length direction of the movable plate 93. A Z-shaped rod 94, a first end of which is movably arranged in the movable groove 92, and a first motor 91 is fixedly connected to the protective cylinder 2. The driving end of the first motor 91 is fixedly connected to the second end of the Z-shaped rod 94. Specifically, the first motor 91 is controlled by an external control mechanism to drive the Z-shaped rod 94 to rotate. The Z-shaped rod 94 drives the movable plate 93 and the first rack 95 to slide on the outer wall of the protective cylinder 2 through the movable groove 92. 96 engages, thereby causing the spray pipe 11 to rotate and rotate in the first chute 15; further, the conveying component 8 includes a water pump 82, which is fixedly mounted on the liquid ammonia tank truck body 1, and the water inlet end of the water pump 82 is connected to the water tank 81 fixedly mounted on the liquid ammonia tank truck body 1, and the discharge end of the water pump 82 is connected to the second end of the spray pipe 11 through the connecting pipe 83, and the connecting pipe 83 and the spray pipe 11 are connected through the rotary joint 12. The water pump 82 draws water from the water tank 81 and conveys the water to the spray pipe 11 through the connecting pipe 83 and the rotary joint 12 to realize the spraying operation of the tank body 14. The conveying component 8 has a simple structure and can reliably provide a water source for the spray pipe 11 to meet the needs of spraying and cooling, etc., and ensure the safety of the liquid ammonia during transportation; it should be noted that in this embodiment, it is possible to consider adding special additives, such as flame retardants, to the water tank 81 to further enhance the spraying effect, and at the same time optimize the control method of the water pump 82 to realize automatic start and stop and flow regulation.

[0056] In this embodiment, if Figure 1 、 Figure 2 and Figure 3 As shown, partitions 10 for placing shielding cloth 71 are relatively fixedly connected to both sides of the protective tube 2.

[0057] Working principle:

[0058] When the tank body 14 needs to be cooled, water can be transported to the spray pipe 11 through the transport component 8, so that the water is discharged to the outer wall of the tank body 14 along the drainage hole on the spray pipe 11. At the same time, the drive component 9 drives the spray pipe 11 to rotate back and forth, so that the spray pipe 11 rotates back and forth along the outer wall of the tank body 14, so that water can be evenly sprayed to the outer wall of the tank body 14 to achieve the cooling effect. When liquid ammonia leaks in the tank body 14, the pressure sensor 29 senses it and sends a signal to the external control mechanism. The external control mechanism controls the rotation component 6 to start, and the rotation component 6 drives the two sets of shielding components 7 The sliding plate 72 slides relatively in the second slide groove 17 of the protective tube 2, so that the shielding cloth 71 is unfolded. At the same time, when the sliding plate 72 moves, the storage tube 5 moves accordingly. When the third gear 24 is engaged with the second rack 18, the third gear 24 drives the second gear 22 and the second rotating shaft 23 to rotate. The first rotating shaft 21 rotates to make the baffle 26 open the opening 27. The slaked lime powder can be spilled from the opening 27 and gradually falls on the outer wall of the tank body 14 as the sliding plate 72 rotates. The slaked lime powder can react with the liquid ammonia, which plays a certain emergency treatment role and reduces the harm caused by the leakage of liquid ammonia. When the sliding plate 72 moves, the storage tube 5 moves accordingly. When the third gear 24 is engaged with the second rack 18, the third gear 24 drives the second gear 22 and the second rotating shaft 23 to rotate. The first rotating shaft 21 rotates to make the baffle 26 open the opening 27. The slaked lime powder can be spilled from the opening 27 and gradually falls on the outer wall of the tank body 14 as the sliding plate 72 rotates. The slaked lime powder can react with the liquid ammonia, which plays a certain emergency treatment role and reduces the harm caused by the leakage of liquid ammonia. When sliding to the designated position, the rubber blocks 73 on the two sliding plates 72 fit together, so that the shielding assembly 7 shields the receiving groove 30, preventing the liquid ammonia leaking from the tank body 14 from spraying out to the outside, thereby avoiding personal injury. Then, the external control mechanism drives the assembly 9 to drive the spray pipe 11 to rotate back and forth, and the infrared thermal imager 16 scans the outer wall of the tank body 14. When liquid ammonia leaks, the liquid ammonia vaporizes and absorbs heat, which will make the temperature of the leakage area lower than the surrounding environment. The infrared thermal imager 16 forms a thermal image by detecting the difference in thermal radiation on the surface of the object, thereby showing the temperature abnormal area, helping When a liquid ammonia leakage point is found, the driving component 9 stops operating, so that the drainage hole of the spray pipe 11 is relative to the leakage point of the tank body 14. At this time, the conveying component 8 is started by the external control mechanism to convey water to the inside of the spray pipe 11 and spray it to the leakage point of the tank body 14 from the drainage hole to achieve the dilution treatment of the liquid ammonia. The overall structure is simple to operate and has a high degree of automation. It can timely detect the leakage of liquid ammonia in the tank body 14, and take shielding and neutralization measures to achieve the dilution treatment of the liquid ammonia, prevent the leakage of liquid ammonia from causing harm to personnel, and reduce the risk of liquid ammonia leakage.

[0059] The present invention is not limited to the above-described embodiments. Any structural changes made under the guidance of the present invention, which have the same or similar technical solutions as the present invention, should be understood to fall within the scope of protection of the present invention. The technologies, shapes, and structural parts not described in detail in the present invention are all well-known technologies.

Claims

1. A liquid ammonia tank truck for transporting liquid ammonia, comprising a liquid ammonia tank truck body (1), a tank body (14), and a pressure sensor (29) disposed on the tank body (14), characterized in that: A protective cylinder (2) is fixedly mounted on the liquid ammonia tank truck body (1), the protective cylinder (2) is penetrated by a receiving groove (30) for mounting the tank body (14), the protective cylinder (2) is provided with two groups of shielding components (7) that can shield the receiving groove (30) and slide relatively along its axis, the protective cylinder (2) is provided with a rotating component (6) that drives the two groups of shielding components (7) to slide relatively along the axis of the protective cylinder (2), and the shielding component (7) includes a sliding plate (72), a shielding cloth (71) and A rubber block (73), the sliding plate (72) is slidably arranged on the protective tube (2), the two ends of the shielding cloth (71) are fixedly connected to the sliding plate (72) and the protective tube (2), respectively, the rubber block (73) is fixedly connected to the end of the sliding plate (72) away from the shielding cloth (71), the protective tube (2) is provided with a second sliding groove (17) for the sliding plate (72) to slide, and the rotating assembly (6) is configured to drive the sliding plate (72) to slide along the second sliding groove (17); A spray pipe (11) is rotatably arranged in the receiving groove (30) in the protective cylinder (2) relative to the tank body (14); the spray pipe (11) and the protective cylinder (2) are coaxially arranged; the protective cylinder (2) is provided with a driving assembly (9) for driving the spray pipe (11) to reciprocate along the outer wall of the tank body (14); a plurality of infrared thermal imagers (16) with detection ends facing the tank body (14) are provided at intervals on the spray pipe (11); and the liquid ammonia tank truck body (1) is provided with a conveying assembly (8) connected to the spray pipe (11); The sliding plate (72) is fixedly connected to a storage cylinder (5) capable of holding slaked lime powder on one side of the receiving groove (30), and a through-hole (27) is provided through one end of the storage cylinder (5) facing the tank body (14). The storage cylinder (5) is internally threadedly connected to a first rotating shaft (21), and the first rotating shaft (21) is fixedly connected to a baffle (26) capable of shielding the through-hole (27) through a plurality of connecting rods (25). An upper end of the first rotating shaft (21) extends to the outer wall of the storage cylinder (5) and is sleeved with a second gear (22). The storage cylinder (5) is rotatably connected to a second rotating shaft (23), and a third gear (24) meshing with the second gear (22) is sleeved on the second rotating shaft (23). A second rack (18) meshing with the third gear (24) is fixedly connected to the inner wall of the protective cylinder (2), and the second rack (18) is coaxially arranged with the second rotating shaft (23).

2. The liquid ammonia tanker for transporting liquid ammonia according to claim 1, characterized in that: At least one limiting protrusion (13) is fixedly connected to the inner wall of the storage cylinder (5) for limiting the baffle (26) to the opening (27).

3. The liquid ammonia tanker for transporting liquid ammonia according to claim 1, characterized in that: The rotating assembly (6) comprises: Two third rotating shafts (69) are arranged in the protective tube (2) for relative rotation. A driving rod (61) whose other end is fixedly connected to the two third rotating shafts (69) is fixedly connected. The two driving rods (61) are staggered. The mounting plate (62) is an L-shaped structure. The mounting plates (62) on the two driving rods (61) are in the same horizontal plane. The mounting plates (62) on the two driving rods (61) are respectively fixedly connected to the sliding plates (72) on the two groups of the shielding components (7). The first bevel gear (63) is sleeved on the two third rotating shafts (69); a fourth rotating shaft (67) rotatably disposed on the protective tube (2), a first end of the fourth rotating shaft (67) extending to the outer wall of the protective tube (2), a second motor (68) for driving the first end of the fourth rotating shaft (67) to rotate fixedly connected to the protective tube (2), and a third bevel gear (66) sleeved on the second end of the fourth rotating shaft (67); A fifth rotating shaft (64) is rotatably arranged in the protective tube (2), and second bevel gears (65) meshing with the third bevel gear (66) and the two first bevel gears (63) are sleeved on both ends of the fifth rotating shaft (64).

4. The liquid ammonia tanker for transporting liquid ammonia according to claim 3, characterized in that: A first sealing gasket (3) is fixedly connected relatively to the sliding plate (72) in the second sliding groove (17). The first sealing gasket (3) is fixedly connected to the inside of the protective tube (2) and is arranged along the length direction of the second sliding groove (17). The first sealing gasket (3) is fitted with the sliding plate (72) and the shielding cloth (71).

5. The liquid ammonia tanker for transporting liquid ammonia according to claim 4, characterized in that: The protective tube (2) has two groove bodies (20) embedded relatively along the sliding plate (72), and the two groove bodies (20) are connected to the second slide groove (17). Multiple groups of elastic mechanisms (4) are fixedly installed in the two groove bodies (20), and the movable ends of the elastic mechanisms (4) are fixedly connected to the second sealing gasket (19) that can fit with the sliding plate (72) and the baffle (26). The second sealing gasket (19) is arranged along the length direction of the second slide groove (17).

6. The liquid ammonia tanker for transporting liquid ammonia according to claim 1, characterized in that: The first end of the spray pipe (11) is slidably arranged on the inner wall of the protective cylinder (2), and the protective cylinder (2) is provided with a first sliding groove (15) for the spray pipe (11) to slide. The second end of the spray pipe (11) extends to the outer wall of the protective cylinder (2). The driving component (9) includes: A first gear (96) is sleeved on and fixedly connected to the second end of the spray pipe (11); A first rack (95) is slidably arranged on the outer wall of the protective tube (2), the first rack (95) is meshed with the first gear (96), a movable plate (93) is vertically and fixedly connected to the first rack (95), and a movable groove (92) is provided on the movable plate (93) along its length direction; A Z-shaped rod (94) has a first end movably disposed in the movable groove (92), a first motor (91) is fixedly connected to the protective tube (2), and a driving end of the first motor (91) is fixedly connected to the second end of the Z-shaped rod (94).

7. The liquid ammonia tanker for transporting liquid ammonia according to claim 6, characterized in that: The conveying assembly (8) comprises: A water pump (82) is fixedly mounted on the liquid ammonia tank truck body (1); a water inlet end of the water pump (82) is connected to a water tank (81) fixedly mounted on the liquid ammonia tank truck body (1); a discharge end of the water pump (82) is connected to the second end of the spray pipe (11) via a connecting pipe (83); and the connecting pipe (83) and the spray pipe (11) are connected via a rotary joint (12).

8. The liquid ammonia tanker for transporting liquid ammonia according to claim 1, characterized in that: Partitions (10) for placing the shielding cloth (71) are relatively fixedly connected to both sides of the protective tube (2).

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