An LNG refueling cryogenic liquid vaporizer device

Abstract

The present application relates to the technical fields of liquid gasifier, in particular to a LNG filling low-temperature liquid gasifier device, comprising a heat exchanger body, the heat exchanger body is hollow for air to enter the heat exchanger body to form convection, the heat exchanger body is internally provided with a pipeline assembly, the pipeline assembly is used for transporting gas in a tank truck to a filling station on a ship, the heat exchanger body is externally provided with a fire-fighting water injection assembly for heating fire-fighting water and spraying the fire-fighting water on the pipeline assembly, and cooling water can be added to the heat exchanger body. The present application uses three modes of air-temperature type, air-temperature and fire-fighting water heating mode, cooling water and electric heating mode, which can be used in combination or independently, improves operation efficiency, the device is suitable for various ship types and various LNG storage tanks, and can be flexibly arranged according to a shipyard or a filling port, uses a crane to move, reduces cost, simplifies drying, inerting and precooling, and facilitates fast and convenient operation.

Description

Technical Field

[0001] This invention relates to the field of liquid vaporizer technology, specifically to a cryogenic liquid vaporizer device for LNG refueling. Background Technology

[0002] Clean energy fuels such as LNG, methanol, and ammonia are increasingly being used in new shipbuilding and ship conversion. Their green, environmentally friendly, and economical nature represents a major trend in future ship development, and LNG is a viable solution for ship fuel. Currently, green energy is a major trend in ship development, and most shipping companies are ordering LNG dual-fuel powered ships to meet the emission standards of the International Maritime Organization while also saving on operating costs.

[0003] Chinese patent CN118654219B discloses a multifunctional integrated ship LNG bunkering device, including a frame and connecting pipelines, and further comprising, integrated within the frame: a pressurization system: which self-pressurizes the tanker by partially vaporizing the liquid in the tanker and returning it to the tanker; a vaporization system: which converts the liquid stored in the tanker into gas and transports it to the ship's storage tank; an auxiliary heating system: which increases the temperature of the vaporized liquid; and a pipeline system: which facilitates the flow of liquid from the tanker into the ship's storage tank. This patent integrates the tanker's pressurization liquid phase interface, tanker liquid phase interface, tanker gas phase interface, pressurizer, vaporizer, and reheater into a single frame, achieving integration and unloading of the inerting, displacement, and unloading processes.

[0004] Typically, during the construction of LNG dual-fuel vessels, the LNG system pipelines and storage tanks need to be dried, inerted, and pre-cooled before LNG replacement and refueling can be carried out. This involves using tank trucks and conventional ambient air vaporization equipment. However, conventional ambient air vaporization equipment has drawbacks such as large size, excessive weight and inconvenience in transportation, poor heat exchange efficiency, and susceptibility to icing, which increases the shipyard's construction costs and the shipowner's refueling costs. Summary of the Invention

[0005] The purpose of this invention is to provide a cryogenic liquid vaporizer device for LNG refueling, which can be used in three modes: air temperature, air temperature and fire-fighting hydrothermal mode, and cooling water and electric heating mode. It can be used in combination or independently to improve operational efficiency. This device is suitable for various ship types and various LNG storage tanks, and can also be flexibly and mobilely arranged according to shipyards or refueling ports. It can be moved by crane to reduce costs and simplify drying, inerting and precooling, making it convenient and quick to operate.

[0006] To address the problems of existing technologies, this invention provides an LNG refueling cryogenic liquid vaporizer device, comprising a heat exchanger body, which is hollow to allow air to enter and form convection. The heat exchanger body also contains a pipe assembly for transporting gas from tank trucks to the refueling station on board. A fire water injection assembly is also provided outside the heat exchanger body to heat the fire water and spray it onto the pipe assembly. Cooling water can be added to the heat exchanger body, and an electric heater is also provided within the heat exchanger body for heating the cooling water. When the heat exchanger body is filled with cooling water, the pipe assembly is immersed in the cooling water for heat exchange.

[0007] Preferably, the pipe assembly includes multiple main gas supply pipes arranged in a ring and disposed in the heat exchanger body, and each main gas supply pipe is arranged along the length direction of the heat exchanger body, and the outer surface of each main gas supply pipe is also provided with a number of fins for heat exchange along its length direction.

[0008] Preferably, the fins are arranged at a 30-45 degree angle to the vertical plane of the main air supply pipe to increase the flow rate of external air and cooling water.

[0009] Preferably, the pipeline assembly includes several bends, one end of each bend is connected to the tail end of a main gas filling pipe, and the other end of the bend is connected to the head end of another pipeline assembly, for increasing the length of the gas transport path. The head end of one pipeline assembly is connected to an air inlet pipe for connecting to a tank truck, and the tail end of the other pipeline assembly is connected to an air outlet pipe for connecting to a shipboard refueling station.

[0010] Preferably, the heat exchanger body is cylindrical, made of steel, and has openings at both ends and an opening at the top. First sealing caps can be detachably installed at both ends of the heat exchanger body, and each first sealing cap can be detachably fitted with a sealing plate for sealing the heat exchanger body. When the sealing plate and the first sealing cap are in contact, cooling water can be introduced into the heat exchanger body for heat exchange with the piping assembly. An electric heater for heating the cooling water is also provided in the heat exchanger body.

[0011] Preferably, a detachable second sealing cover is provided at the top opening of the heat exchanger body, and sealing gaskets to prevent water leakage are provided at the junction of the first sealing cover and the heat exchanger body and the junction of the second sealing cover and the heat exchanger body. Sealing gaskets to prevent water leakage are also provided at the junction of the first sealing cover and the sealing plate.

[0012] Preferably, the heat exchanger body is provided with a plurality of quick-release structures for easy removal of the first sealing cover and the second sealing cover from the heat exchanger body, and the first sealing cover is provided with a plurality of quick-release structures for easy removal from the first sealing cover.

[0013] Preferably, the fire water injection assembly includes a first fire heating pipe disposed externally and arranged along its length, and a first connecting pipe connected to the first fire heating pipe. One end of the first connecting pipe is connected to a first spray pipe, and the first spray pipe is provided with first heating nozzles distributed along its length. The first heating nozzles are also provided with heaters for heating water. The first fire heating pipe is also provided with a first temperature control valve for controlling the water flow rate. The fire water injection assembly also includes several first brackets fixed on the heat exchanger body for supporting the first fire heating pipe. The first spray pipe also contains a temperature sensor for detecting water temperature.

[0014] Preferably, the fire-fighting water injection assembly includes a second fire-fighting heating pipe disposed outside the heat exchanger body and arranged along the length of the heat exchanger body, and a second connecting pipe connected to the second fire-fighting heating pipe. One end of the second connecting pipe is connected to a second spray pipe. The second spray pipe is cylindrical and arranged along the length of the heat exchanger body. The second spray pipe is also provided with a plurality of second heating nozzles evenly distributed along its center. The second heating nozzles are also provided with heaters for heating water. The second fire-fighting heating pipe is also provided with a second temperature control valve for controlling the water flow rate. The fire-fighting water injection assembly also includes a plurality of second supports fixed to the heat exchanger body for supporting the second fire-fighting heating pipe. The second spray pipe also contains a temperature sensor for detecting water temperature.

[0015] Preferably, a controller is also provided on the outside of the heat exchanger body, a cooling water inlet is provided at the bottom of the heat exchanger body for cooling water to enter into the heat exchanger body, a cooling water outlet is provided at the top of the heat exchanger body for cooling water to be discharged, and a detachable lifting ring is provided on the top of the heat exchanger body and one of the first sealing covers for lifting the heat exchanger body.

[0016] The advantages of this invention compared to the prior art are:

[0017] 1. This invention features openings on both sides and top of the heat exchanger body. A hose connects the inlet pipe and the tank truck, and the hose connects the outlet pipe and the filling station. In single air-temperature mode, the sealing plate and second sealing cover are opened, allowing air to enter the heat exchanger body through the openings and create convection, thus facilitating convective heat exchange on the pipe assembly. In cooling water and electric heating mode, the sealing plate and second sealing cover are closed, allowing external cooling water to enter the heat exchanger body through the cooling water inlet. The cooling water can exit to the water source area or overflow directly from the cooling water outlet. The cooling water in the heat exchanger body is heated by the electric heater, improving heat exchange efficiency. In air-temperature and fire-fighting water-heating mode, the sealing plate and second sealing cover can be opened for air convection, and the fire-fighting water injection assembly can be connected to the fire-fighting water supply. The fire-fighting water is sprayed onto the pipe assembly through nozzles, preventing the main air supply pipe and fins from freezing and blocking the heat exchanger body and fins, further improving heat exchange efficiency.

[0018] 2. This invention increases the length of the gas transport path by setting up multiple main gas supply pipes, with each main gas supply pipe connected end to end by bends. Each main gas supply pipe also has several fins arranged along its length, with the fins arranged at an angle of 30-45 degrees to the vertical plane of the main gas supply pipe, thereby increasing the heat exchange area and, to a certain extent, increasing the flow rate of external air and cooling water, further improving the heat exchange efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external first three-dimensional structure of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0020] Figure 2 This is a schematic diagram of the external second three-dimensional structure of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0021] Figure 3 This is a front view structural schematic diagram of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0022] Figure 4 This is a schematic diagram of the internal three-dimensional structure of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0023] Figure 5 This is a schematic diagram of the internal second three-dimensional structure of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0024] Figure 6 This is a first three-dimensional structural diagram of the internal piping assembly of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0025] Figure 7This is a second three-dimensional structural diagram of the internal piping assembly of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0026] Figure 8 This is a three-dimensional structural diagram of the main gas filling pipe in the internal piping assembly of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0027] Figure 9 This is a first three-dimensional structural diagram of the fire-fighting water injection component of an embodiment of the LNG refueling cryogenic liquid vaporizer device of the present invention.

[0028] Figure 10 This is a schematic diagram of the second three-dimensional structure of the fire-fighting water injection component of an embodiment of the LNG refueling cryogenic liquid vaporizer device of the present invention.

[0029] Figure 11 This is a three-dimensional structural diagram of the electric heater of an LNG refueling cryogenic liquid vaporizer device according to the present invention.

[0030] Figure 12 This is a three-dimensional structural diagram of the fire-fighting water injection component of a second embodiment of the LNG refueling cryogenic liquid vaporizer device of the present invention.

[0031] The diagram is labeled as follows: 1. Heat exchanger body; 11. Controller; 12. Cooling water outlet; 13. Cooling water inlet; 2. First sealing cover; 21. Sealing plate; 3. Second sealing cover; 4. Quick-release structure; 5. Lifting ring; 6. Fire water injection assembly; 61a. First fire heating pipe; 62a. First bracket; 63a. First thermostatic valve; 64a. First connecting pipe; 65a. First spray pipe; 66a. First heating nozzle; 61b. Second fire heating pipe; 62b. Second bracket; 63b. Second thermostatic valve; 64b. Second connecting pipe; 65b. Second spray pipe; 66b. Second heating nozzle; 7. Electric heater; 8. Piping assembly; 81. Main gas supply pipe; 811. Inlet pipe; 812. Outlet pipe; 813. Bend; 82. Fin. Detailed Implementation

[0032] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0033] Reference Figures 1-12As shown, this invention provides an LNG refueling cryogenic liquid vaporizer device, including a heat exchanger body 1. The heat exchanger body 1 is hollow, allowing air to enter and form convection. The hollow structure of the heat exchanger body 1 facilitates the heat exchange process by allowing air to enter and form convection. The heat exchanger body 1 can contain cooling water and provides an environment for the pipe assembly 8 to be immersed in for heat exchange. The pipe assembly 8 is also installed inside the heat exchanger body 1. The pipe assembly 8 is used to transport gas from tank trucks to the refueling station on board the ship. The pipe assembly 8 is responsible for the safe and efficient transportation of gas from tank trucks to the refueling station on board the ship. When the pipe assembly 8 is immersed in the cooling water in the heat exchanger body 1, the gas temperature can be effectively controlled or regulated through the heat exchange process. The heat exchanger body 1 is also equipped with a fire water injection component 6 for heating the fire water and spraying it onto the pipe assembly 8. Cooling water can be added into the heat exchanger body 1, and an electric heater 7 for heating the cooling water is also provided in the heat exchanger body 1. When the heat exchanger body 1 is full of cooling water, the pipe assembly 8 is immersed in the cooling water for heat exchange.

[0034] When the heat exchanger body 1 is filled with cooling water, the pipe assembly 8 is immersed in it. This design utilizes the high heat capacity of water, allowing the gas in the pipe assembly 8 to be effectively heated to the required temperature through heat exchange. The electric heater 7 can adjust the temperature of the cooling water to adapt to different operating requirements.

[0035] The pipe assembly 8 includes multiple main gas supply pipes 81 arranged in a ring and disposed in the heat exchanger body 1. Each main gas supply pipe 81 is arranged along the length direction of the heat exchanger body 1, and the outer surface of each main gas supply pipe 81 is also provided with a number of fins 82 for heat exchange along its length direction.

[0036] The main gas supply pipes 81 are arranged in a ring-like pattern inside the heat exchanger body 1, and are divided into multiple layers. This design helps to maximize the heat exchange area and improve heat exchange efficiency. Each main gas supply pipe 81 also extends along the length of the heat exchanger body 1. This ensures that the gas undergoes sufficient heat exchange along the entire length of the heat exchanger. To improve heat exchange efficiency, several fins 82 are provided on the outer surface of each main gas supply pipe 81 along its length. The fins 82 increase the heat exchange area, allowing more heat to be transferred from cooling water or air to the gas in the main gas supply pipe 81, which helps to control the gas temperature more effectively. The multi-layered ring-like arrangement design makes the space occupied by the entire pipe assembly 8 inside the heat exchanger body 1 relatively small, thereby improving the utilization rate of the internal space of 1.

[0037] refer to Figures 6-8As shown, the fins 82 are arranged at a 30-45 degree angle to the vertical plane of the main air supply pipe 81 to increase the flow rate of external air and cooling water. When the fins 82 are arranged at a 30-45 degree angle, they can more effectively guide the flow of external air or cooling water. This angled design reduces the resistance to fluid flow, allowing air or water to flow more smoothly over the surface of the fins 82, thereby increasing the flow rate.

[0038] In use, each main gas supply pipe 81 is connected end to end by a bend 813, thereby increasing the length of the gas transport path. Each main gas supply pipe 81 is also provided with several fins 82 along its length. The fins 82 are arranged at an angle of 30-45 degrees to the vertical plane of the main gas supply pipe 81, thereby increasing the heat exchange area and increasing the flow rate of external air and cooling water to a certain extent, further improving the heat exchange efficiency.

[0039] refer to Figures 6-8 As shown, the pipeline assembly 8 includes several bends 813. One end of each bend 813 is connected to the tail end of a main gas filling pipe 81, and the other end of the bend 813 is connected to the head end of another pipeline assembly 8, which is used to increase the length of the gas transport path. The head end of one pipeline assembly 8 is connected to an air inlet pipe 811 for connecting to a tank truck, and the tail end of the other pipeline assembly 8 is connected to an air outlet pipe 812 for connecting to a shipboard refueling station.

[0040] The pipeline assembly 8, through the combination of the main gas filling pipe 81, the bend 813, the inlet pipe 811, and the outlet pipe 812, realizes a highly efficient and flexible LNG refueling cryogenic liquid vaporizer device. This design not only increases the length of the gas transport path but also optimizes the heat exchange effect.

[0041] refer to Figures 1-5 As shown, the heat exchanger body 1 is cylindrical and made of steel, ensuring its structural strength and durability. The heat exchanger body 1 can withstand pressure and temperature changes from the internal fluid and the external environment. The heat exchanger body 1 has openings at both ends and an opening at the top. First sealing covers 2 can be detachably installed at both ends of the heat exchanger body 1, and each first sealing cover 2 can be detachably fitted with a sealing plate 21 for sealing the heat exchanger body 1. When the sealing plate 21 and the first sealing cover 2 are in contact, cooling water can flow into the heat exchanger body 1 for heat exchange with the piping assembly 8. An electric heater 7 for heating the cooling water is also installed in the heat exchanger body 1. When the sealing plate 21 and the first sealing cover 2 are tightly fitted, the sealing plate 21 and the first sealing cover 2 together ensure the airtightness of the heat exchanger body 1, preventing cooling water leakage.

[0042] A removable second sealing cover 3 is provided at the top opening of the heat exchanger body 1. Sealing gaskets to prevent water leakage are provided at the junction of the first sealing cover 2 and the heat exchanger body 1 and the junction of the second sealing cover 3 and the heat exchanger body 1. Sealing gaskets to prevent water leakage are also provided at the junction of the first sealing cover 2 and the sealing plate 21, so as to ensure that cooling water or other fluids are prevented from leaking from the top opening when the heat exchanger body is closed.

[0043] When using the single ambient temperature mode, the sealing plate 21 and the second sealing cover 3 are opened, and air enters the heat exchanger body 1 from the opening to form convection, thereby performing convective heat exchange on the pipe assembly 8.

[0044] When using the cooling water and electric heating mode, the sealing plate 21 and the second sealing cover 3 are closed. External cooling water enters the heat exchanger body 1 from the cooling water inlet 13. The cooling water can exit to the water source area from the cooling water outlet 12 or overflow directly. The cooling water in the heat exchanger body 1 is heated by the electric heater 7 to improve the heat exchange efficiency.

[0045] The heat exchanger body 1 is provided with several quick-release structures 4 for easy removal of the first sealing cover 2 and the second sealing cover 3 from the heat exchanger body 1. The first sealing cover 2 is provided with several quick-release structures 4 for easy removal of the first sealing cover 2. The quick-release structures 4 may include mechanical devices such as bolts, clips, and quick clamps. The quick-release structures 4 allow operators to quickly and safely remove or install the first sealing cover 2, the sealing plate 21, and the second sealing cover 3 without the need for complicated tools or excessive time.

[0046] refer to Figure 10As shown in Embodiment 1, the fire-fighting water injection assembly 6 includes a first fire-fighting heating pipe 61a disposed outside 1 and arranged along the length of 1. A first connecting pipe 64a is connected to the first fire-fighting heating pipe 61a, and one end of the first connecting pipe 64a is connected to a first spray pipe 65a. The first spray pipe 65a is provided with first heating nozzles 66a distributed along its length, and a heater for heating water is also provided inside the first heating nozzles 66a. A first temperature control valve 63a for controlling the water flow rate is also provided on the first fire-fighting heating pipe 61a. The fire-fighting water injection assembly 6 also includes several first supports 62a fixed to the heat exchanger body 1 for supporting the first fire-fighting heating pipe 61a. A temperature sensor for detecting water temperature is also present in the first spray pipe 65a. The main function of the first fire-fighting heating pipe 61a is as a water heating and transportation pipeline. The first fire-fighting heating pipe 61a may be made of high-temperature resistant and corrosion-resistant materials to ensure stable performance during long-term use. When the fire-fighting water-heating mode is required, fire-fighting water is introduced into the first fire-fighting heating pipe 61a, and water enters the first heating nozzle 66a from the first spray pipe 65a, and then sprays the water onto the pipe assembly 8 for heat exchange, and the heater can heat the water.

[0047] refer to Figure 12 As shown in Embodiment 2, the fire water injection assembly 6 includes a second fire heating pipe 61b disposed outside the heat exchanger body 1 and arranged along the length of the heat exchanger body 1. A second connecting pipe 64b is connected to the second fire heating pipe 61b, and one end of the second connecting pipe 64b is connected to a second spray pipe 65b. The second spray pipe 65b is cylindrical and arranged along the length of the heat exchanger body 1, which can evenly spray fire water and cover a wider area. The second spray pipe 65b is also provided with several second heating nozzles 66b evenly distributed along its center, and a heater for heating water is also provided inside the second heating nozzles 66b. The second fire heating pipe 61b is also provided with a second temperature control valve 63b for controlling the water flow rate. The fire water injection assembly 6 also includes several second brackets 62b fixed on the heat exchanger body 1 for supporting the second fire heating pipe 61b. The second spray pipe 65b also contains a temperature sensor for detecting the water temperature. When fire-fighting water is needed, the heater in the second fire-fighting heating pipe 61b is activated. The heater starts working and heats the fire-fighting water to the preset temperature. The flow rate and temperature of the water are adjusted by the second temperature control valve 63b. The heated fire-fighting water is transported to the second sprinkler pipe 65b through the second connecting pipe 64b and sprayed onto the pipe assembly 8 through the second heating nozzle 66b for heat exchange of the pipe assembly 8.

[0048] When using the air-temperature and fire-fighting water-heating modes, the sealing plate 21 and the second sealing cover 3 can be opened to allow air convection, and the fire-fighting water injection assembly 6 can be connected to the fire-fighting water. The fire-fighting water is sprayed onto the pipe assembly 8 through the nozzle to prevent the main air supply pipe 81 and fins 82 from freezing, and to prevent freezing from clogging and damaging the heat exchanger body 1 and fins 82, thereby further improving the heat exchange efficiency.

[0049] refer to Figures 1-5 As shown, a controller 11 is also installed outside the heat exchanger body 1. The controller 11 is the control system of the heat exchanger body 1, responsible for monitoring and controlling various parameters during the heat exchange process, such as water temperature and flow rate. A cooling water inlet 13 is provided at the bottom of the heat exchanger body 1 for cooling water to enter the heat exchanger body 1, and a cooling water outlet 12 is provided at the top of the heat exchanger body 1 for cooling water to exit. The cooling water inlet 13 and the cooling water outlet 12 are used for the entry and exit of cooling water, respectively. During the heat exchange process, cooling water enters the heat exchanger body 1 through the cooling water inlet 13, exchanges heat with the pipe assembly 8, and then exits through the cooling water outlet 12. A detachable lifting ring 5 is also provided on the top of the heat exchanger body 1 and on one of the first sealing covers 2 for lifting the heat exchanger body 1.

[0050] Working Principle: During use, an external crane is used to lift the device and place it at the required installation location. Then, a hose connects the inlet pipe 811 to the tank truck, and the hose connects the outlet pipe 812 to the refueling station, allowing gas to be added. When the gas enters the refueling station through the pipeline assembly 8, the ambient temperature of the main refueling pipe 81 decreases. To prevent excessively low temperatures from causing surface icing and damaging the fins 82, heat exchange is required for the pipeline assembly 8. In single-air-temperature mode, the sealing plate 21 and the second sealing cover 3 are opened, allowing air to enter the heat exchanger body 1 through the opening, creating convection and thus convective heat exchange for the pipeline assembly 8. In cooling water and electric heating mode, the sealing plate 21 and the second sealing cover 3 are closed, allowing external cooling water to enter the heat exchanger body 1 through the cooling water inlet 13. The cooling water can exit from the cooling water outlet 12 to the water source area or overflow directly, and then pass through the electric heater. 7. The cooling water of the heat exchanger body 1 is heated to improve the heat exchange efficiency. When using the air-temperature type and fire-fighting water-heating mode, the sealing plate 21 and the second sealing cover 3 can be opened to allow air convection. The fire-fighting water injection component 6 can be connected to the fire-fighting water. The fire-fighting water is sprayed onto the pipe assembly 8 through the nozzle to prevent the main gas supply pipe 81 and the fins 82 from freezing. This prevents the freezing from blocking and damaging the heat exchanger body 1 and the fins 82, further improving the heat exchange efficiency. In order to improve the heat exchange effect, multiple main gas supply pipes 81 are provided, and each main gas supply pipe 81 is connected end to end by a bend 813, thereby increasing the length of the gas transport path. Each main gas supply pipe 81 is also provided with several fins 82 along the length of the main gas supply pipe 81. The arrangement of the fins 82 on the main gas supply pipe 81 is at an angle of 30-45 degrees to the vertical plane of the main gas supply pipe 81, thereby increasing the heat exchange area and increasing the flow rate of external air and cooling water to a certain extent, further improving the heat exchange efficiency.

[0051] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. An LNG refueling cryogenic liquid vaporizer device, characterized in that: The device includes a heat exchanger body (1), which is hollow and allows air to enter the heat exchanger body (1) to form convection. The heat exchanger body (1) is also equipped with a pipe assembly (8) inside, which is used to transport the gas in the tanker to the refueling station on the ship. The heat exchanger body (1) is also equipped with a fire water injection assembly (6) outside, which is used to heat the fire water and spray the fire water onto the pipe assembly (8). Cooling water can be added into the heat exchanger body (1), and an electric heater (7) is also provided in the heat exchanger body (1) for heating the cooling water. When the heat exchanger body (1) is full of cooling water, the pipe assembly (8) is immersed in the cooling water for heat exchange. The pipe assembly (8) includes multiple main gas supply pipes (81) arranged in a ring and disposed in the heat exchanger body (1), and each main gas supply pipe (81) is arranged along the length direction of the heat exchanger body (1), and the outer surface of each main gas supply pipe (81) is also provided with a number of fins (82) for heat exchange along its length direction. The pipeline assembly (8) includes several bends (813), one end of each bend (813) is connected to the tail end of a main gas filling pipe (81), and the other end of the bend (813) is connected to the head end of another pipeline assembly (8) to increase the length of the gas transport path. The head end of one pipeline assembly (8) is connected to an air inlet pipe (811) for connecting to a tank truck, and the tail end of the other pipeline assembly (8) is connected to an air outlet pipe (812) for connecting to a ship refueling station. The heat exchanger body (1) is cylindrical and made of steel. The heat exchanger body (1) has openings at both ends and an opening at the top. The openings at both ends of the heat exchanger body (1) can also be detachably provided with first sealing caps (2). Each first sealing cap (2) can also be detachably provided with a sealing plate (21) for sealing the heat exchanger body (1). When the sealing plate (21) and the first sealing cap (2) are sealed together, cooling water is introduced into the heat exchanger body (1) for heat exchange with the pipe assembly (8). The fire water injection assembly (6) includes a first fire heating pipe (61a) disposed outside the heat exchanger body (1) and along the length of the heat exchanger body (1), and a first connecting pipe (64a) connected to the first fire heating pipe (61a). One end of the first connecting pipe (64a) is connected to a first spray pipe (65a), and a first heating nozzle (66a) distributed along its length is disposed on the first spray pipe (65a). A heater for heating water is also disposed inside the first heating nozzle (66a). A first temperature control valve (63a) for controlling the water flow rate is also disposed on the first fire heating pipe (61a). The fire water injection assembly (6) also includes several first brackets (62a) fixed on the heat exchanger body (1) for supporting the first fire heating pipe (61a). A temperature sensor for detecting water temperature is also disposed in the first spray pipe (65a).

2. The LNG refueling cryogenic liquid vaporizer device according to claim 1, characterized in that: The fins (82) are arranged at a 30-45 degree angle to the vertical plane of the main air supply pipe (81) to increase the flow rate of external air and cooling water.

3. The LNG refueling cryogenic liquid vaporizer device according to claim 2, characterized in that: The heat exchanger body (1) is provided with a detachable second sealing cover (3) at the top opening. A sealing gasket to prevent water leakage is provided at the junction of the first sealing cover (2) and the heat exchanger body (1) and the junction of the second sealing cover (3) and the heat exchanger body (1). A sealing gasket to prevent water leakage is also provided at the junction of the first sealing cover (2) and the sealing plate (21).

4. The LNG refueling cryogenic liquid vaporizer device according to claim 3, characterized in that: The heat exchanger body (1) is provided with a number of quick-release structures (4) for easy removal of the first sealing cover (2) and the second sealing cover (3) from the heat exchanger body (1), and the first sealing cover (2) is provided with a number of quick-release structures (4) for easy removal from the first sealing cover (2).

5. The LNG refueling cryogenic liquid vaporizer device according to claim 1, characterized in that: The heat exchanger body (1) is also provided with a controller (11) on the outside. The bottom of the heat exchanger body (1) is provided with a cooling water inlet (13) for cooling water to enter into the heat exchanger body (1). The top of the heat exchanger body (1) is provided with a cooling water outlet (12) for cooling water to be discharged. The top of the heat exchanger body (1) and one of the first sealing covers (2) are also provided with a detachable lifting ring (5) for lifting the heat exchanger body (1).

Images