Liquid ammonia tank car for transporting liquid ammonia

Abstract

The utility model relates to the technical field of liquid nitrogen transportation, in particular to a liquid nitrogen tank car for liquid nitrogen transportation, which comprises a mounting frame and a liquid nitrogen tank arranged at the top of the mounting frame, and further comprises a support frame bolted at the top of the mounting frame, and circulating mechanisms are arranged inside and outside the mounting frame; under the cooperation of the stepping motor, the adjusting mechanism, the sliding block and the guide groove, the shielding plates on the two sides can move in the opposite directions at the same time to be closed, so that the liquid nitrogen tank can be shielded from sunlight, the situation that the temperature of the liquid nitrogen tank rises due to the sunlight in the transportation process is reduced, and meanwhile the liquid nitrogen tank can be opened; the liquid nitrogen tank is arranged in the liquid nitrogen tank, certain ventilation performance of the liquid nitrogen tank is kept, nitrogen is prevented from being gathered above the tank during parking at night, meanwhile, water in the liquid storage tank can be sprayed to the surface of the liquid nitrogen tank under the cooperation of a circulating mechanism, the liquid storage tank, a conveying mechanism, a fixing sleeve and a spraying pipe, the water can be recycled, and therefore waste of the water is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid nitrogen transportation, in particular to a liquid ammonia tank truck used for liquid ammonia transportation. Background Art

[0002] Liquid ammonia, also known as anhydrous ammonia, is a colorless liquid with a strong pungent odor. As an important chemical raw material, ammonia is usually pressurized or cooled to obtain liquid ammonia for the convenience of transportation and storage. Ammonia is easily soluble in water. Liquid ammonia is mostly stored in pressure-resistant steel cylinders or steel tanks. Liquid ammonia is widely used in industry, is corrosive and easily volatile.

[0003] However, when the existing liquid nitrogen tank trucks for transporting liquid nitrogen are put into use, they will experience various weather conditions during transportation. In summer, not only is the temperature high, but the intensity of sunlight is also high, which can easily cause the temperature of the liquid nitrogen tank to continue to rise, thereby transmitting the liquid nitrogen inside the liquid nitrogen tank, causing the liquid nitrogen to react. Although some vehicles are equipped with roofs for sunshade, liquid nitrogen will continue to gasify during transportation, and the liquid nitrogen tank will leak a little, releasing nitrogen. If the ventilation effect is poor, the released nitrogen is likely to accumulate in local areas, especially nitrogen likes to gather above, resulting in excessive nitrogen concentration in the area. During daytime driving, due to convection air, nitrogen will not gather, but at night when not driving, these nitrogen will be blocked by the roof, and the nitrogen will not be easily discharged, posing a safety hazard.

[0004] At the same time, most of the liquid nitrogen tank trucks used for transporting liquid nitrogen need to stop the truck when the temperature of the liquid nitrogen tank is high, and use tools to spray water to cool the liquid nitrogen tank. However, water cannot cool the liquid nitrogen tank immediately, and some of the water will flow downward along the surface of the liquid nitrogen tank, resulting in a waste of water and increasing the cost of transporting the liquid nitrogen tank. Utility Model Content

[0005] The utility model aims to provide a liquid ammonia tank truck for transporting liquid ammonia, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a liquid ammonia tank truck for transporting liquid ammonia, comprising a mounting frame and a liquid nitrogen tank arranged on the top of the mounting frame, and also comprising:

[0007] A support frame bolted to the top of the mounting frame, wherein a circulation mechanism is arranged inside and outside the mounting frame, a stepping motor is bolted to the top of the support frame, a fixed shell is bolted to the bottom of the support frame, an adjustment mechanism is arranged in the inner cavity of the fixed shell, a slider is arranged in the inner cavity of the fixed shell, and a guide groove is opened in the inner cavity of the fixed shell;

[0008] A shielding plate slides in the inner cavity of the fixed shell, a liquid storage tank is bolted to one side of the mounting frame, a conveying mechanism is arranged on the top of the liquid storage tank, and a fixing frame is bolted to both sides of the support frame, and a nozzle is fixed to the inner cavity of the fixing frame.

[0009] Preferably, the adjustment mechanism includes a spur gear fixed to the output shaft of the stepper motor, the bottom of the spur gear is rotatably connected to the inner cavity of the fixed shell through a rotating rod, one side of the spur gear is meshed with a first rack plate, and the other side of the spur gear is meshed with a second rack plate, the baffle plate is bolted to the surface of the second rack plate and the first rack plate, respectively, and the bottoms of the first rack plate and the second rack plate are respectively bolted to the sliders on both sides.

[0010] Preferably, the conveying mechanism includes a connecting pipe connected to the top of the liquid storage tank, a liquid pump is bolted to the top of the liquid storage tank, a liquid inlet of the liquid pump is connected to the other end of the connecting pipe, a liquid outlet of the liquid pump is connected to a mounting pipe, and the other end of the mounting pipe is connected to the surface of the nozzle.

[0011] Preferably, the circulation mechanism includes a water tank bolted to the inner cavity of the mounting frame, a water pump bolted to one side of the mounting frame, a water inlet of the water pump and one side of the water tank are interconnected, a water outlet of the water pump and one side of the liquid storage tank are interconnected through a pipeline, and a cooler is provided on one side of the liquid storage tank.

[0012] Preferably, a communication groove is provided on a side of the shielding plate close to the fixed shell.

[0013] Preferably, a fixing sleeve is bolted to one side of the liquid storage tank, and an inner cavity of the fixing sleeve is fixedly connected to the surface of the mounting tube.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model can make the shielding plates on both sides move in opposite directions at the same time and close under the cooperation of the stepping motor, the adjusting mechanism, the sliding block and the guide groove, so as to shield the liquid nitrogen tank from sunlight, reduce the temperature rise of the liquid nitrogen tank caused by sunlight in the transportation diagram, and can also be opened and maintain a certain ventilation of the liquid nitrogen tank to prevent nitrogen from gathering above the tank when parking at night. At the same time, under the cooperation of the circulation mechanism, the liquid storage tank, the conveying mechanism, the fixing sleeve and the nozzle, the water inside the liquid storage tank can be sprayed on the surface of the liquid nitrogen tank, the water can be recycled, and the waste of water can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2It is a schematic diagram of the cross-sectional structure of the fixed shell in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the adjustment mechanism in the utility model;

[0019] Figure 4 It is a structural schematic diagram of the conveying mechanism in the utility model.

[0020] In the figure: 1. mounting frame; 2. liquid nitrogen tank; 3. support frame; 4. circulation mechanism; 41. water tank; 42. water pump; 43. cooler; 5. stepping motor; 6. fixed shell; 7. adjustment mechanism; 71. spur gear; 72. first rack plate; 73. second rack plate; 8. slider; 9. guide groove; 10. shielding plate; 11. connecting groove; 12. liquid storage tank; 13. conveying mechanism; 131. connecting pipe; 132. liquid pump; 133. mounting pipe; 14. fixing sleeve; 15. nozzle; 16. fixing frame. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] See also Figure 1-4As shown, a liquid ammonia tank truck for transporting liquid ammonia includes a mounting frame 1, a liquid nitrogen tank 2 is arranged on the top of the mounting frame 1, the mounting frame 1 can be used to mount the liquid nitrogen tank 2, and the liquid nitrogen tank 2 can store liquid nitrogen, a support frame 3 is bolted to the top of the mounting frame 1, a circulation mechanism 4 is arranged inside and outside the mounting frame, a stepper motor 5 is bolted to the top of the support frame 3, a fixed shell 6 is bolted to the bottom of the support frame 3, the output shaft of the stepper motor 5 penetrates to one side of the fixed shell 6 and is rotatably connected to the penetration point, and the inner cavity of the fixed shell 6 is provided with an adjusting mechanism 4. Mechanism 7, under the cooperation of stepper motor 5 and fixed shell 6, the adjustment mechanism 7 can be operated, the inner cavity of fixed shell 6 is provided with slider 8, the inner cavity of fixed shell 6 is provided with guide groove 9, the surface of slider 8 is slidably connected with the inner wall of guide groove 9, under the cooperation of slider 8 and guide groove 9, the adjustment mechanism 7 can be operated more stably, thereby increasing the stability of the liquid nitrogen tank truck, the inner cavity of fixed shell 6 is slidably connected with shielding plate 10, the number of shielding plates 10 is two and is symmetrically designed with the central axis of fixed shell 6, in stepper motor 5 With the cooperation of the adjusting mechanism 7, the shielding plate 10 can be moved in the inner cavity of the fixed shell 6, so that the shielding plate 10 can block the sunlight for the liquid nitrogen tank 2, reduce the high temperature of the liquid nitrogen tank 2, and maintain the ventilation effect of the liquid nitrogen tank 2, thereby increasing the practicality of the liquid nitrogen tank truck. A connecting groove 11 is provided on the side of the shielding plate 10 close to the fixed shell 6. Under the action of the connecting groove 11, the adjusting mechanism 7 can work. A liquid storage tank 12 is bolted to one side of the mounting frame 1, and a conveying Mechanism 13, both sides of the support frame 3 are bolted with a fixing frame 16, the inner cavity of the fixing frame 16 is fixed with a nozzle 15, the surface of the nozzle 15 is connected with a plurality of nozzles and is equidistantly designed along the surface of the nozzle 15, under the action of the conveying mechanism 13, the water inside the liquid storage tank 12 can enter the inside of the nozzle 15, and the liquid nitrogen tank 2 can be cooled through the nozzle 15, and under the action of the circulation mechanism, the cooled water can enter the inside of the liquid storage tank, thereby realizing the recycling of water, thereby increasing the use effect of the liquid nitrogen tank truck.

[0023] The adjusting mechanism 7 includes a spur gear 71. The output shaft of the stepping motor 5 is fixedly connected to the top of the spur gear 71. The bottom of the spur gear 71 is rotatably connected to the inner cavity of the fixed shell 6 through a rotating rod. A first rack plate 72 is meshed on one side of the spur gear 71, and a second rack plate 73 is meshed on the other side of the spur gear 71. The shielding plate 10 is bolted to the surface of the second rack plate 73 and the first rack plate 72 respectively. The bottoms of the first rack plate 72 and the second rack plate 73 are bolted to the sliders 8 on both sides respectively. Under the action of the connecting groove 11, the spur gear 71 can drive the shielding plates 10 on both sides to move in opposite directions at the same time through the first rack plate 72 and the second rack plate 73, so that the shielding plate 10 can block the sunlight for the liquid nitrogen tank 2 and maintain the ventilation effect of the liquid nitrogen tank 2, thereby reducing the explosion caused by the high temperature of the liquid nitrogen tank 2, thereby increasing the safety of the staff, and under the action of the connecting groove 11, the first rack plate 72 and the second rack plate 73 can drive the shielding plate 10 to move to the inner cavity of the fixed shell 6.

[0024] The conveying mechanism 13 includes a connecting pipe 131, the bottom of the connecting pipe 131 is connected to the top of the liquid storage tank 12, a liquid pump 132 is bolted to the top of the liquid storage tank 12, the liquid inlet of the liquid pump 132 is connected to the other end of the connecting pipe 131, the liquid outlet of the liquid pump 132 is connected to the installation pipe 133, the other end of the installation pipe 133 is connected to the surface of the nozzle 15, and the liquid pump 132 and the connecting pipe 131 cooperate to allow the water in the liquid storage tank 12 to enter the liquid storage tank 12 through the installation pipe 133. The liquid nitrogen tank 2 is then cooled by the nozzle 15, which effectively prevents the liquid nitrogen tank 2 from having a high temperature, thereby increasing the practicality of the liquid nitrogen tank truck. A fixing sleeve 14 is bolted to one side of the liquid storage tank 12, and the inner cavity of the fixing sleeve 14 is fixedly connected to the surface of the mounting pipe 133. Under the action of the fixing sleeve 14, the mounting pipe 133 can be effectively prevented from being positionally offset during operation, thereby increasing the stability of the conveying mechanism 13 and thus increasing the stability of the liquid nitrogen tank truck.

[0025] The circulation mechanism 4 includes a water tank 41, the surface of the water tank 41 is bolted to the inner cavity of the mounting frame 1, a water pump 42 is bolted to one side of the mounting frame 1, a water inlet of the water pump 42 is communicated with one side of the water tank 41, a water outlet of the water pump 42 is communicated with one side of the liquid storage tank 12, a cooler 43 is provided on one side of the liquid storage tank 12, the water tank 41 can recycle the water used to cool the liquid nitrogen tank 2, and under the action of the water pump 42, the water inside the water tank 41 can enter the inside of the liquid storage tank 12, and then with the cooperation of the cooler 43, the water can be cooled again, so as to realize the recycling of water, thereby increasing the use effect of the liquid nitrogen tank truck.

[0026] Working principle: First, the staff installs the liquid nitrogen tank 2 on the transport vehicle through the mounting frame 1 (the wheels are not shown in the figure). When the vehicle is transporting the liquid nitrogen tank 2, the staff turns on the stepper motor 5, so that the spur gear 71 drives the shielding plates 10 on both sides to move in opposite directions at the same time through the first rack plate 72 and the second rack plate 73, and with the cooperation of the slider 8 and the guide groove 9, the second rack plate 73 and the first rack plate 72 can move more stably, so that the shielding plate 10 can block the sunlight for the liquid nitrogen tank 2 and reduce the temperature of the liquid nitrogen tank 2. When the transport vehicle stops and the staff rests at night, with the cooperation of the stepper motor 5 and the spur gear 71, the first rack plate 72 and the second rack plate 73 can be moved to the inside of the connecting groove 11 of the inner cavity of the shielding plate 10, so that the shielding plates 10 on both sides move to The interior of the fixed shell 6 maintains the ventilation effect of the liquid nitrogen tank 2 to prevent the liquid nitrogen from generating nitrogen gas that accumulates at the bottom of the baffle 10 (that is, above the tank). When the temperature of the liquid nitrogen tank 2 is high, with the cooperation of the liquid pump 132 and the connecting pipe 131, the water inside the liquid storage tank 12 can enter the interior of the nozzle 15 through the installation pipe 133, and the liquid nitrogen tank 2 is sprayed and cooled through the nozzle 15. The cooled water source flows into the interior of the water tank 41. At the same time, under the action of the water delivery pump 42, the water source inside the water tank 41 can enter the interior of the liquid storage tank 12, and with the cooperation of the cooler 43, the water inside the liquid storage tank 12 can be cooled again, and then the vehicle can transport the liquid nitrogen tank 2 to the location. The cooler 43 is a semiconductor refrigerator with a cooling surface facing the inner side of the liquid storage tank 12 and a heating surface facing the outer side.

[0027] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A liquid ammonia tank truck for transporting liquid ammonia, comprising a mounting frame (1) and a liquid nitrogen tank (2) arranged on the top of the mounting frame (1), characterized in that: Also includes: A support frame (3) bolted to the top of the mounting frame (1), a circulation mechanism (4) being arranged inside and outside the mounting frame (1), a stepping motor (5) being bolted to the top of the support frame (3), a fixed shell (6) being bolted to the bottom of the support frame (3), an adjustment mechanism (7) being arranged in the inner cavity of the fixed shell (6), a sliding block (8) being arranged in the inner cavity of the fixed shell (6), and a guide groove (9) being provided in the inner cavity of the fixed shell (6); A shielding plate (10) slides in the inner cavity of the fixed shell (6); a liquid storage tank (12) is bolted to one side of the mounting frame (1); a conveying mechanism (13) is arranged on the top of the liquid storage tank (12); fixed frames (16) are bolted to both sides of the support frame (3); and a nozzle (15) is fixed to the inner cavity of the fixed frame (16).

2. A liquid ammonia tank truck for liquid ammonia transportation according to claim 1, characterized in that: The adjusting mechanism (7) comprises a spur gear (71) fixed to the output shaft of the stepping motor (5); the bottom of the spur gear (71) is rotatably connected to the inner cavity of the fixed shell (6) via a rotating rod; one side of the spur gear (71) is meshed with a first rack plate (72); the other side of the spur gear (71) is meshed with a second rack plate (73); the shielding plate (10) is bolted to the surface of the second rack plate (73) and the first rack plate (72), respectively; the bottoms of the first rack plate (72) and the second rack plate (73) are bolted to the sliders (8) on both sides, respectively.

3. The liquid ammonia tank truck for liquid ammonia transportation according to claim 1, characterized in that: The conveying mechanism (13) comprises a connecting pipe (131) connected to the top of the liquid storage tank (12); a liquid pump (132) is bolted to the top of the liquid storage tank (12); a liquid inlet of the liquid pump (132) is connected to the other end of the connecting pipe (131); a liquid outlet of the liquid pump (132) is connected to a mounting pipe (133); and the other end of the mounting pipe (133) is connected to the surface of the nozzle (15).

4. The liquid ammonia tank truck for liquid ammonia transportation according to claim 1, characterized in that: The circulation mechanism (4) comprises a water tank (41) bolted to the inner cavity of the mounting frame (1); a water pump (42) is bolted to one side of the mounting frame (1); a water inlet of the water pump (42) is connected to one side of the water tank (41); a water outlet of the water pump (42) is connected to one side of a liquid storage tank (12) via a pipeline; and a cooler (43) is provided on one side of the liquid storage tank (12).

5. The liquid ammonia tank truck for liquid ammonia transportation according to claim 1, characterized in that: A communication groove (11) is provided on one side of the shielding plate (10) close to the fixed shell (6).

6. The liquid ammonia tank truck for liquid ammonia transportation according to claim 3, characterized in that: A fixing sleeve (14) is bolted to one side of the liquid storage box (12), and the inner cavity of the fixing sleeve (14) is fixedly connected to the surface of the mounting tube (133).

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