Heat preservation liquid ammonia tank truck

Abstract

The utility model relates to the technical field of liquefied gas transportation, in particular to a heat preservation liquid ammonia tank truck which comprises a walking mechanism and a tank body fixedly arranged on the walking mechanism, the tank body can move through the walking mechanism, and the tank body comprises an outer shell and an inner tank body fixedly arranged in the outer shell and used for loading liquid ammonia media. A heat preservation layer is arranged between the outer shell and the inner tank body, and the outer shell is used for protecting the heat preservation layer; the thermal insulation layer is arranged between the outer shell and the inner tank body, so that the heat loss of liquid ammonia in the transportation process can be effectively reduced, the low-temperature state of the liquid ammonia is kept, the transportation efficiency and safety are improved, and the problem that a traditional normal-temperature single-layer tank truck needs to be subjected to temperature rising and falling conversion for multiple times is solved; therefore, the energy consumption and the overall transportation time are reduced, and the transportation cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of liquefied gas transportation technology, specifically to an insulated liquid ammonia tanker. Background Technology

[0002] Driven by the current national dual-carbon strategy and supply-side reform, my country's energy structure is gradually transitioning from high-carbon to low-carbon and even zero-carbon. In this transformation, the development of energy-saving and emission-reduction technologies has become a core element in promoting the in-depth implementation of the dual-carbon strategy. Given the high energy consumption and environmental pollution problems of the traditional synthetic ammonia industry, the transition to green ammonia has become an irreversible trend. It is worth noting that liquid ammonia, as a potential hydrogen storage medium, can be closely integrated with the national strategic development of liquid hydrogen energy, opening up a new path for the deep integration of renewable energy, hydrogen energy, and traditional industries. Based on this, constructing a complete "ammonia-hydrogen" green carbon circular economy system covering "clean and efficient ammonia synthesis - safe and low-cost ammonia storage and transportation - carbon-free and efficient ammonia-hydrogen utilization" is of profound significance for ensuring national energy and environmental security and promoting sustainable socio-economic development. Against this backdrop, the transportation of green ammonia shows enormous development potential.

[0003] However, the current domestic transportation of liquid ammonia mainly relies on ambient temperature single-layer pressure tank trucks. If liquid ammonia is used as a hydrogen storage medium, the temperature of the converted medium is approximately -33°C. Transporting this type of cryogenic liquid ammonia using ambient temperature single-layer tank trucks requires first heating the liquid ammonia from -33°C to room temperature, then cooling it back to -33°C upon arrival at the destination to convert it into a hydrogen storage medium. This process not only requires multiple temperature adjustments but also significantly increases energy consumption, prolongs the overall transportation time, and leads to a substantial increase in transportation costs. Therefore, the existing ambient temperature single-layer liquid ammonia tank truck transportation method has significant technical limitations and economic inefficiencies when facing the demand for cryogenic liquid ammonia transportation. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an insulated liquid ammonia tanker truck, aiming to solve the problem that the current method of transporting liquid ammonia mainly relies on ambient temperature single-layer pressure tank trucks, resulting in high transportation costs.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A thermally insulated liquid ammonia tanker includes: a traveling mechanism, a tank body fixedly mounted on the traveling mechanism, the tank body being movable via the traveling mechanism, the tank body including an outer shell and an inner tank body fixedly mounted inside the outer shell for loading liquid ammonia medium, an insulation layer being provided between the outer shell and the inner tank, the outer shell being used to protect the insulation layer.

[0007] Furthermore, a safety valve is also installed on the tank body. One end of the safety valve extends into the inner tank body, and the safety valve is used to control the pressure of the medium inside the inner tank body to not exceed a preset value.

[0008] Furthermore, a level gauge is also installed on the tank to check the amount of medium in the tank.

[0009] Furthermore, a traction disc is also installed on the tank body, which is used to connect with the tractor unit.

[0010] Furthermore, the lower part of the tank is equipped with retractable outriggers to support the tank when it is parked.

[0011] Furthermore, a valve box is installed on the tank for loading and unloading liquid ammonia.

[0012] Furthermore, the valve box includes a gas phase interface and a liquid phase interface disposed within the box body and communicating with the interior of the inner tank, a valve controller for controlling the opening or closing of the gas phase interface and the liquid phase interface, and a pressure gauge and a thermometer for measuring the temperature of the inner tank.

[0013] Furthermore, the insulation layer is a polyurethane layer covering the surface of the inner tank.

[0014] Furthermore, the surface of the polyurethane layer is covered with a layer of stainless steel plate.

[0015] Furthermore, the surface of the tank is provided with a manhole that communicates with the inner tank, so as to facilitate maintenance personnel to enter the inner tank.

[0016] The insulated liquid ammonia tanker described in this utility model has the following advantages: by setting an insulation layer between the outer shell and the inner tank, the heat loss of liquid ammonia during transportation can be effectively reduced, and the liquid ammonia can be kept at a low temperature. This not only improves transportation efficiency and safety, but also avoids the problem of traditional single-layer tankers requiring multiple temperature changes, thereby reducing energy consumption and overall transportation time, and greatly reducing transportation costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the planar structure of an embodiment of the present utility model;

[0018] Figure 2 This is a planar sectional view of the tank body according to an embodiment of the present utility model;

[0019] Figure 3 This is a structural schematic diagram of the valve box according to an embodiment of the present utility model.

[0020] Explanation of reference numerals in the attached drawings: 1. Level gauge; 2. Safety valve; 3. Outer shell; 4. Insulation layer; 5. Inner tank; 6. Manhole; 7. Traction disc; 8. Outrigger; 9. Valve box; 10. Guardrail; 11. Traveling mechanism; 12. Gas phase interface; 13. Liquid phase interface; 14. Valve controller; 15. Pressure gauge; 16. Thermometer. Detailed Implementation

[0021] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0022] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0023] To further illustrate the principle and structure of this utility model, the preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0024] like Figure 1-3 As shown, this utility model embodiment provides a thermally insulated liquid ammonia tanker truck, including: a traveling mechanism 11 and a tank body fixedly mounted on the traveling mechanism 11. The tank body can move via the traveling mechanism 11, thereby meeting the transportation needs of liquid ammonia. The tank body includes an outer shell 3 and an inner tank 5, with the inner tank 5 disposed inside the outer shell 3. The inner tank 5 is used to load liquid ammonia. A thermal insulation layer 4 is provided between the outer shell 3 and the inner tank 5, protecting the thermal insulation layer 4 and ensuring its integrity and insulation effect.

[0025] By installing an insulation layer 4 between the outer shell 3 and the inner tank 5, heat loss of liquid ammonia during transportation can be effectively reduced, maintaining the liquid ammonia at a low temperature. This not only improves transportation efficiency and safety but also avoids the problem of multiple temperature adjustments required by traditional single-layer tank trucks at ambient temperature, thereby reducing energy consumption and overall transportation time, and significantly lowering transportation costs. This is of great significance for promoting the transportation and development of green ammonia and helps to build a complete "ammonia-hydrogen" green carbon circular economy system covering "clean and efficient ammonia synthesis - safe and low-cost ammonia storage and transportation - carbon-free and efficient ammonia hydrogen utilization".

[0026] The insulation layer 4, as a crucial component of the tanker truck, primarily functions to reduce heat exchange between the inner tank 5 and the external environment, thereby maintaining the low temperature of the liquid ammonia within the inner tank 5. In this invention, the insulation layer 4 is achieved using a polyurethane layer covering the surface of the inner tank 5. As the insulation layer 4, the polyurethane layer significantly reduces heat exchange between the inner tank 5 and the external environment, thus minimizing temperature loss of the liquid ammonia during transportation. This helps maintain the low temperature of the liquid ammonia, reducing energy consumption and transportation costs. Furthermore, the polyurethane layer not only possesses excellent insulation properties but also good strength and waterproofing. This enhances the overall performance of the tanker truck, improving its durability and service life.

[0027] Furthermore, the polyurethane layer is covered with a stainless steel plate. The stainless steel plate has high strength and rigidity, which can provide additional protection and support for the polyurethane layer and enhance the overall structural strength of the tank.

[0028] Furthermore, a safety valve 2 is installed on the tank body, with one end extending into the inner tank 5. The safety valve 2 ensures that the pressure of the medium in the inner tank 5 remains within a safe range. When the pressure of the liquid ammonia in the inner tank 5 rises due to increased ambient temperature or other reasons and exceeds the preset safety value, the safety valve 2 will automatically open, releasing the excess pressure and preventing tank rupture or other safety accidents caused by excessive pressure. This design not only enhances the safety of the tanker truck during operation but also effectively protects the safety of the surrounding environment and personnel.

[0029] Furthermore, a level gauge 1 is installed on the tank, allowing operators to visually understand the amount of liquid ammonia loaded in the tank. By reading the indication on the level gauge 1, operators can accurately grasp the amount of medium in the tank, thereby ensuring that the amount of liquid ammonia loaded does not exceed the maximum capacity limit of the tank, nor is it less than the minimum amount required for transportation.

[0030] Furthermore, the tank body is also equipped with a traction disc 7, which is used to connect with the tractor unit. The traction disc 7 is mainly designed to reliably connect with the tractor unit, ensuring that the tank truck can be effectively towed and moved.

[0031] Furthermore, the lower part of the tank is equipped with retractable outriggers 8, whose main function is to provide stable support for the tank when the tanker is parked. These outriggers 8 can be extended and retracted as needed to adjust their height, preventing the tank from tilting due to uneven or sloping ground, improving the stability of the tanker when parked, and thus ensuring the safety of the liquid ammonia inside the tank.

[0032] Furthermore, a valve box 9 is installed on the tank body for loading and unloading liquid ammonia. The valve box 9 provides a dedicated interface and control device for loading and unloading liquid ammonia. Inside the valve box 9 are a gas phase interface 12 and a liquid phase interface 13, which communicate with the interior of the inner tank 5. These two interfaces are used for loading and unloading liquid ammonia in the gas and liquid phases, respectively. Through the dedicated gas and liquid phase interfaces 13, rapid and accurate loading and unloading of liquid ammonia can be achieved, improving loading and unloading efficiency.

[0033] Furthermore, the valve box 9 is also equipped with a valve controller 14 for controlling the opening and closing of the gas phase interface 12 and the liquid phase interface 13, as well as a pressure gauge 15 and a thermometer 16 for measuring the temperature of the inner tank 5. These devices together constitute a real-time monitoring and control system for the liquid ammonia loading and unloading process. The valve controller 14 allows operators to precisely control the opening and closing of the gas and liquid phase interfaces 13, thereby achieving precise control of the liquid ammonia loading and unloading process. The pressure gauge 15 and the thermometer 16 can monitor the temperature of the inner tank 5 in real time, ensuring that the temperature of the liquid ammonia remains within a safe range during the loading and unloading process, preventing safety accidents caused by excessively high or low temperatures. Through real-time monitoring and control, potential safety hazards can be detected and addressed in a timely manner, thereby ensuring the overall safety of the liquid ammonia loading and unloading process.

[0034] Furthermore, a guardrail 10 is provided on the walking mechanism 11. The guardrail 10 is used to protect the vehicle, valve box 9, etc.

[0035] Furthermore, a manhole 6 communicating with the inner tank 5 is provided on the surface of the tank body. The manhole 6 is an opening on the surface of the tank body communicating with the inner tank 5, allowing maintenance personnel to easily enter the interior of the inner tank 5 for inspection, maintenance, and cleaning. Through the manhole 6, maintenance personnel can enter the inner tank 5 without disassembling the entire tank body or performing complex operations, thereby greatly improving maintenance efficiency.

[0036] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A thermal insulated liquid ammonia tanker truck, characterized in that, include: The traveling mechanism includes a tank that is fixedly mounted on it. The tank can be moved by the traveling mechanism. The tank includes an outer shell and an inner tank that is fixedly mounted inside the outer shell for loading liquid ammonia at -33℃. An insulation layer is provided between the outer shell and the inner tank. The outer shell is used to protect the insulation layer. A safety valve is also provided on the tank. One end of the safety valve extends into the inner tank. The safety valve is used to control the pressure of the medium in the inner tank to not exceed a preset value.

2. The insulated liquid ammonia tanker truck according to claim 1, characterized in that, The tank is also equipped with a level gauge, which is used to check the amount of medium in the tank.

3. The insulated liquid ammonia tanker truck according to claim 1, characterized in that, The tank is also equipped with a traction disc, which is used to connect to the tractor unit.

4. The insulated liquid ammonia tanker truck according to claim 1, characterized in that, The lower part of the tank is also equipped with retractable outriggers to support the tank when it is parked.

5. The insulated liquid ammonia tanker truck according to claim 1, characterized in that, The tank is equipped with a valve box for loading and unloading liquid ammonia.

6. The insulated liquid ammonia tanker truck according to claim 5, characterized in that, The valve box includes a gas phase interface and a liquid phase interface that are connected to the inside of the inner tank and are located inside the box; a valve controller for controlling the opening or closing of the gas phase interface and the liquid phase interface; and a pressure gauge and a thermometer for measuring the temperature of the inner tank.

7. The insulated liquid ammonia tanker truck according to claim 1, characterized in that, The insulation layer is a polyurethane layer covering the surface of the inner tank.

8. The insulated liquid ammonia tanker truck according to claim 7, characterized in that, The polyurethane layer is covered with a stainless steel plate.

9. The insulated liquid ammonia tanker truck according to claim 7, characterized in that, The surface of the tank is provided with a manhole that communicates with the inner tank, so that maintenance personnel can easily enter the inner tank.

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