Liquid gas gasification system and ship

Abstract

The invention provides a liquid gas gasification system and a ship, and the system comprises an energy conversion device which comprises a medium inlet and a medium outlet; the input channel comprises three subsections, and one end of one subsection is connected with one medium inlet; the other end of the first section is connected with an outlet of the three-way valve, one end of the second section and one end of the third section are connected with two ports of the three-way valve, and the other end of the third section is connected with a medium source; one end of the output channel is connected with a medium outlet; the heat exchange equipment comprises a two-medium inlet and a two-medium outlet, and the other end of the medium output channel is connected with the two-medium inlet; the box body comprises an inlet, a first outlet and a second outlet; the inlet is connected with the two medium outlets, and the first outlet is connected with the other end of the two subsections; an inlet of the controllable valve is connected with the second section, and an outlet is connected with the output channel; the temperature sensor is used for detecting temperature; and the controller is connected with each valve and the temperature sensor and is used for controlling each valve according to the temperature. The constant heat source can be provided for gasification.

Description

Technical Field

[0001] This application relates to the field of marine technology, and more specifically, to a liquid gas vaporization system and a ship. Background Technology

[0002] Liquefied natural gas (LNG) is a liquefied form of natural gas, with methane as its main component. It is widely recognized as the cleanest fossil fuel on Earth.

[0003] Currently, many ships are starting to use liquefied natural gas (LNG) as fuel, which means that LNG is gasified to provide fuel for the ship's propulsion system.

[0004] However, currently, liquefied natural gas (LNG) gasification systems cannot accurately control the gasification rate. If the gasification rate is too high, excess gas will not be utilized, resulting in resource waste; if the gasification rate is too low, it will lead to insufficient power in the ship's propulsion system and may even threaten navigation safety. Summary of the Invention

[0005] The embodiments of this application provide a liquid gas vaporization system and a ship that can provide a constant heat source for the vaporization of liquid gas to at least a certain extent, thereby ensuring that the vaporization rate of liquefied natural gas is kept at a reasonable level.

[0006] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0007] According to one aspect of the embodiments of this application, a liquid gas vaporization system is provided, comprising: an energy conversion device including a first medium inlet and a first medium outlet, the energy conversion device being used to transfer generated heat to a medium flowing into the energy conversion device via the first medium inlet; a medium input channel including a first segment, a second segment, and a third segment, one end of the first segment being connected to the first medium inlet; a first three-way valve located between the three segments of the medium input channel, the other end of the first segment being connected to the outlet of the first three-way valve, one end of the second segment being connected to a first port of the first three-way valve, one end of the third segment being connected to a second port of the first three-way valve, and the other end of the third segment being connected to a source of the medium; a medium output channel, one end of which is connected to the first medium outlet; and a heat exchange device including a second medium inlet and a second medium outlet, the other end of the medium output channel being connected to the second medium inlet; the heat exchange device being used to transfer heat to a medium flowing into the energy conversion device via the second medium inlet. The heat provided by the inflowing medium converts the liquid gas into a gaseous gas; the housing includes an inlet, a first outlet, and a second outlet; the inlet is connected to the second medium outlet, and the first outlet is connected to the other end of the second segment; a first controllable valve; the inlet of the first controllable valve is connected to the second segment, and the outlet of the first controllable valve is connected to the medium output channel; a second controllable valve is connected to the second outlet of the housing; at least one temperature detection unit is used to detect the medium temperature related to the heat exchange equipment or the housing; a controller is electrically connected to the first controllable valve, the second controllable valve, the first three-way valve, and each of the temperature detection units, and is used to control at least one of the first controllable valve, the second controllable valve, and the first three-way valve according to the temperature detected by each of the temperature detection units, so that the temperature detected by each of the temperature detection units meets a preset temperature condition, the preset temperature condition is used to ensure that the rate at which the heat exchange equipment converts into gaseous gas meets a predetermined requirement.

[0008] Optionally, based on the foregoing scheme, the heat exchange device includes a gaseous gas outlet, and the energy conversion device includes a fuel inlet. The gaseous gas outlet is connected to the fuel inlet, and is used to input the gas converted by the heat exchange device into the energy conversion device through the gaseous gas outlet and the fuel inlet, so as to provide gaseous fuel for the energy conversion device.

[0009] Optionally, based on the aforementioned scheme, the system is located on a ship, the energy conversion device is an engine or generator, the medium is water, the source of the medium is the water body that carries the ship's navigation, and the tank is an expansion tank for loading water.

[0010] Optionally, based on the foregoing scheme, under the control of the controller, the flow path of the medium includes at least one of the following: First flow path: the medium flows from its source through the third segment into the first three-way valve, through the first port of the first three-way valve, the second segment, and the first controllable valve into the medium output channel, through the medium output channel and the second medium inlet of the heat exchange device into the heat exchange device, through the second medium outlet into the housing, and through the second outlet of the housing and the second controllable valve out of the ship; Second flow path: the medium flows from its source through the third segment into the first three-way valve, through the... The energy conversion device flows through the outlet of the first three-way valve, the first section, and the first medium inlet; it flows through the first medium outlet and the medium output channel into the heat exchange device; it flows through the second medium outlet of the heat exchange device into the housing; and it is discharged outside the ship through the second outlet of the housing and the second controllable valve. The third flow path is as follows: from the first outlet of the housing, it flows sequentially through the second section and the first three-way valve into the first section; it flows through the first medium inlet into the energy conversion device; it flows through the first medium outlet and the medium output channel into the heat exchange device; and it flows through the second medium outlet of the heat exchange device into the housing.

[0011] Optionally, based on the foregoing scheme, under the control of the controller, the flow path of the medium further includes: a fourth flow path: the medium flows from its source through the third segment into the first three-way valve, and from the first outlet of the housing through the second segment into the first three-way valve, then through the outlet of the first three-way valve, the first segment, and the first medium inlet into the energy conversion device, then through the first medium outlet and the medium output channel into the heat exchange device, then through the second medium outlet of the heat exchange device into the housing, and finally through the second outlet of the housing and the second controllable valve out of the ship; wherein, the proportion of the medium flowing into the first three-way valve from different paths is determined by the controller based on the temperature detected by each of the temperature detection units.

[0012] Optionally, based on the aforementioned scheme, after the system starts operating, the controller is used to control each valve to allow the medium to flow through the first flow path when the temperature detected by each of the temperature detection units meets the preset temperature condition, and to control each valve to allow the medium to flow through the second flow path when the temperature detected by each of the temperature detection units is lower than the preset temperature condition; the controller is also used to control each valve to allow the medium to flow through the third flow path after the medium has flowed through the second flow path, and to control each valve to allow the medium to flow through the fourth flow path when the temperature detected by each of the temperature detection units is still lower than the preset temperature condition after the medium has flowed through the third flow path; the controller is also used to control each valve to allow the medium to flow through the fourth flow path after the medium has flowed through the third flow path, and to control each valve to allow the medium to flow through the fourth flow path when the temperature detected by each of the temperature detection units exceeds the preset temperature condition after the medium has flowed through the third flow path.

[0013] Optionally, based on the aforementioned scheme, the system includes multiple energy conversion devices, multiple heat exchange devices, and media output channels corresponding to the multiple heat exchange devices respectively. Each energy conversion device is used to provide a medium carrying heat to the corresponding heat exchange device, and each heat exchange device is used to provide gaseous gas to the corresponding energy conversion device. The outlet of the first controllable valve is connected to the media output channel corresponding to each heat exchange device.

[0014] Optionally, based on the aforementioned scheme, each energy conversion device and each heat exchange device corresponds one-to-one; or The system includes a greater number of energy conversion devices than the system includes a number of heat exchange devices, with at least two energy conversion devices corresponding to the same heat exchange device.

[0015] Optionally, based on the foregoing scheme, it further includes: a circulation pump located on the second segment, the circulation pump being used to assist the flow of the medium.

[0016] Optionally, based on the foregoing scheme, the energy conversion device includes an exhaust pipe, through which the energy conversion device transfers the generated heat to the medium flowing into the energy conversion device.

[0017] According to one aspect of the embodiments of this application, a ship is provided, the ship including a liquid gas vaporization system as described in the above embodiments.

[0018] According to one aspect of the embodiments of this application, a computer-readable medium is provided having a computer program stored thereon, which, when executed by a processor, implements the functions implemented by the controller in the above embodiments.

[0019] According to one aspect of the embodiments of this application, an electronic device is provided, including: one or more processors; and a storage device for storing one or more programs, which, when executed by the one or more processors, cause the one or more processors to perform the functions implemented by the controller in the above embodiments.

[0020] According to one aspect of the embodiments of this application, a computer program product is provided, the computer program product including computer instructions stored in a computer-readable storage medium, a processor of a computer device reading the computer instructions from the computer-readable storage medium, and the processor executing the computer instructions to cause the computer device to perform the functions implemented by the controller in the above embodiments.

[0021] In some embodiments of this application, a liquid gas vaporization system is provided, comprising an energy conversion device, a medium input channel, a first three-way valve, a medium output channel, a heat exchange device, a housing, a first controllable valve, a second controllable valve, at least one temperature detection unit, and a controller; the energy conversion device includes a first medium inlet and a first medium outlet; the medium input channel includes a first segment, a second segment, and a third segment, one end of the first segment being connected to the first medium inlet; the other end of the first segment being connected to the outlet of the first three-way valve; one end of the second segment being connected to the first port of the first three-way valve; one end of the third segment being connected to the second port of the first three-way valve; and the other end of the third segment being connected to the source of the medium; one end of the medium output channel is connected to the first medium outlet, and the medium output... The other end of the channel is connected to the second medium inlet of the heat exchange equipment, the second medium outlet of the heat exchange equipment is connected to the inlet of the housing, and the first outlet of the housing is connected to the other end of the second section; the inlet of the first controllable valve is connected to the second section, and the outlet of the first controllable valve is connected to the medium output channel; the second controllable valve is connected to the second outlet of the housing; a temperature detection unit is used to detect the medium temperature related to the heat exchange equipment or the housing; a controller is electrically connected to each valve and each temperature detection unit, and is used to control at least one valve according to the temperature detected by each temperature detection unit so that the temperature detected by each temperature detection unit meets the preset temperature condition, and when the temperature detected by the temperature detection unit meets the preset temperature condition, the rate at which the heat exchange equipment converts into gaseous gas meets the predetermined requirement. Therefore, in the solution of this application, since the controller can control at least one valve according to the detected temperature, the flow path of the medium can be changed by controlling the valve, thereby ensuring that the temperature detected by each temperature detection unit meets the preset temperature conditions. Thus, a constant heat source can be provided for the vaporization of liquefied gas, thereby achieving precise control of the vaporization rate of liquefied natural gas and keeping the vaporization rate of liquefied natural gas at a reasonable level. This not only avoids the waste of resources caused by excessively high vaporization rates, but also avoids the problem of insufficient power of the ship's propulsion system caused by excessively low vaporization rates, thus ensuring navigation safety.

[0022] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 A schematic diagram of a liquid gas vaporization system according to an embodiment of this application is shown; Figure 2 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown.

[0024] The annotations in the attached figures are explained as follows: 1-Right main unit, 11-First medium inlet, 12-First medium outlet, 13-Exhaust pipe, 14-Drain port, 2-Medium input channel, 21-First section, 22-Second section, 221-First position, 222-Second position, 223-Hot water circulation pump, 23-Third section, 231-Filter, 24-First three-way valve, 241-First port, 242-Second port, 243-Outlet, 4-Medium output channel, 41-Second three-way valve, 5-Water bath vaporizer, 51-Second medium inlet, 52-Second medium outlet, 53-First temperature detection unit, 54-Second temperature detection unit, 6-Expansion tank, 61-Inlet, 62-First outlet, 63-Second outlet, 64-Third temperature detection unit, 65-Exhaust port, 7-First controllable valve, 8-Second controllable valve, 9-Left main unit, 10-Parked generator. Detailed Implementation

[0025] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0026] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0027] In the embodiments of this application, the terms "module" or "unit" refer to a computer program or part of a computer program that has a predetermined function and works with other related parts to achieve a predetermined goal, and can be implemented wholly or partially using software, hardware (such as processing circuitry or memory), or a combination thereof. Similarly, a processor (or multiple processors or memory) can be used to implement one or more modules or units. Furthermore, each module or unit can be part of an overall module or unit that includes the functionality of that module or unit.

[0028] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.

[0029] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0030] With favorable national policies promoting energy conservation, emission reduction, and the use of clean energy, the technology for using liquefied natural gas (LNG) as fuel in ships is nearing maturity. Since the volume ratio of natural gas to LNG for the same mass is approximately 600:1, natural gas is typically liquefied into LNG and stored in tanks for storage. When combustion is needed, the LNG is vaporized back into natural gas for supply.

[0031] In related technologies, the heat source for LNG vaporization typically comes from the cooling water in the cylinder liners of the ship's main engine. Under normal circumstances, the heat source for LNG vaporization is sufficient. However, when the ship has just started up, the load suddenly increases, or the heat from the cylinder liners is insufficient to meet the required LNG vaporization volume and temperature, the LNG fuel substitution rate can be reduced for dual-fuel ships. However, for engines using only LNG gas, insufficient power may occur. When temporarily idling with low gas consumption, if the heat source for LNG vaporization is sufficient, excess vaporized gas may be wasted and emitted when not in use.

[0032] Therefore, this application first provides a liquid gas vaporization system, which is a system that can use the heat energy of exhaust gas to provide a constant heat source under various operating conditions of a ship, and can adjust the heat source according to the temperature of the natural gas at the vaporizer outlet, providing a solution for the precise control of the vaporization rate of liquefied natural gas, so that natural gas that meets the current needs can be obtained under various operating conditions of the ship, and the vaporization rate of liquefied natural gas can dynamically meet the needs of various operating conditions of the ship.

[0033] This application provides a liquid gas vaporization system that can include an energy conversion device. This device can be various energy conversion devices, such as generators, engines, or electric motors. When the energy conversion device is an engine, the fuel used can be natural gas, gasoline, diesel, etc. The liquid gas vaporization system can include multiple energy conversion devices, which can be of the same or different types. This liquid gas vaporization system can be located on a ship; that is, all components of the liquid gas vaporization system are located on the ship. The ship can navigate on various bodies of water such as rivers, lakes, and seas. The energy conversion device can be an engine, which can provide power for the ship's navigation.

[0034] When a liquid gas vaporization system includes multiple energy conversion devices, the different energy conversion devices can be used at different times.

[0035] Figure 1 A schematic diagram of a liquid gas vaporization system according to an embodiment of this application is shown. Please refer to... Figure 1 As shown, the liquid gas vaporization system includes three energy conversion devices: the right main engine 1, the left main engine 9, and the mooring generator 10. Both the right main engine 1 and the left main engine 9 can be engines. The mooring generator 10 generates electricity when the ship is moored and starting up, providing power to the vessel. The gaseous fuel generated by the heat produced during the operation of the mooring generator 10 can be stored in a gas storage tank. The main engine consumes a large amount of gas during startup, and preheating is required. By storing a portion of the gaseous fuel generated during the operation of the mooring generator 10 in the gas storage tank, sufficient gaseous fuel can be provided for the main engine startup, ensuring its normal operation. During navigation, only one of the two main engines (right main engine 1 and left main engine 9) can operate, while the other can be shut down. For example, only the left main engine 9 can operate during navigation. If the operating main engine fails during navigation, the system can be switched to the shut-down main engine.

[0036] Below, in conjunction with Figure 1 The following describes the implementation scheme of this application in detail, taking the energy conversion device as the right host 1 as an example.

[0037] See Figure 1 As shown, the energy conversion device, namely the right host 1, may include a first medium inlet 11 and a first medium outlet 12. The medium to be heated can flow into the energy conversion device through the first medium inlet 11. After being heated by the energy conversion device, the heated medium can flow out from the first medium outlet 12 of the right host 1. The medium is a working fluid, which can be water, oil, air, other gases, or other types of media. Below, for clearer description, the solution of this application embodiment will be described in detail using water as an example. The energy conversion device is used to transfer the generated heat to the medium flowing into the energy conversion device through the first medium inlet.

[0038] Specifically, the energy conversion device, namely the right main unit 1, may include an exhaust pipe 13, through which the energy conversion device can transfer the generated heat to the medium flowing into the energy conversion device. Figure 1 In this device, a water jacket can be installed at the exhaust pipe 13. The water jacket can be in contact with the exhaust pipe 13 or located around the exhaust pipe. The exhaust pipe 13 can heat the water in the water jacket. The medium flowing into the energy conversion device can enter the water jacket of the energy conversion device to transfer heat to the water in the water jacket through the exhaust pipe 13. After being heated by the energy conversion device, the medium becomes a heated medium.

[0039] Of course, energy conversion equipment can also heat the inflowing medium in other ways. For example, energy conversion equipment can also heat the medium through its cylinder liner. In this case, the medium flowing into the cylinder liner is the cylinder liner water used for the cylinder liner.

[0040] The right main engine 1 may also include a drain port 14; when the right main engine 1 stops running, the remaining water in the water jacket can be discharged from the bottom of the hull through the drain port 14 and a valve, which can ensure that the water in the water jacket can be drained clean.

[0041] Please continue reading Figure 1 As shown, the system also includes a medium input channel 2 and a first three-way valve 24. The medium input channel 2 is used to input the medium to the right main unit 1 or the water bath vaporizer 5. The medium input channel 2 includes a first section 21, a second section 22 and a third section 23. One end of the first section 21 is connected to the first medium inlet 11 of the right main unit 1.

[0042] The first three-way valve 24 is located between the first section 21, the second section 22, and the third section 23 of the medium input channel. The first three-way valve 24 includes a first port 241, a second port 242, and an outlet 243.

[0043] The other end of the first segment 21 is connected to the outlet 243 of the first three-way valve 24, one end of the second segment 22 is connected to the first port 241 of the first three-way valve 24, one end of the third segment 23 is connected to the second port 242 of the first three-way valve 24, and the other end of the third segment 23 is port C, which can be connected to the source of the medium. When the medium is water, the source of the medium can be the water body that carries the ship. For example, when the ship is sailing on a river, the source of the medium can be the water body in the river; when the ship is sailing on the sea, the source of the medium can be the water body in the sea (i.e., seawater). Therefore, in this embodiment, the water body that carries the ship can be directly used as the medium, which can save resources; especially in the south or in summer, when the temperature of the water body that carries the ship is very high, the water that carries the ship can even be directly supplied to the water bath vaporizer 5 to provide fuel for the ship's navigation. A filter 231 is also provided on the third segment 23, and the water entering the system through the third segment 23 can be filtered to remove impurities. Easy to understand, although not specifically indicated, Figure 1 All other components that use the same symbol as filter 231 are filters.

[0044] Please continue reading Figure 1 The system also includes a media output channel 4, one end of which is connected to the first media outlet 12 of the right host 1.

[0045] The system may also include heat exchange equipment, which can be any device that can convert liquid gas into gaseous gas through heat exchange, such as a water bath vaporizer 5, which is also a water bath heater.

[0046] The heat exchange device, namely the water bath vaporizer 5, may include a second medium inlet 51 and a second medium outlet 52. The other end of the medium output channel 4 may be connected to the second medium inlet 51. The heat exchange device is used to convert liquid gas into gaseous gas based on the heat provided by the medium flowing in through the second medium inlet 51. For example, it can convert liquefied natural gas into gaseous natural gas. The second medium outlet 52 of the heat exchange device can output the medium after the heat has been utilized.

[0047] The system may also include a housing. Please see below. Figure 1 The enclosure can be Figure 1The diagram shows an expansion tank 6 for storing water. The expansion tank 6 may include an inlet 61, a first outlet 62, and a second outlet 63. The inlet 61 of the expansion tank 6 can be connected to the second medium outlet 52 of the heat exchange equipment, allowing the medium (such as water) output from the heat exchange equipment to enter the expansion tank 6. The first outlet 62 of the expansion tank 6 can be connected to the other end of the second section 22, allowing the medium in the expansion tank 6 to flow into the second section 22 through the first outlet 62 for circulation. The expansion tank 6 may have functions such as water storage, temperature monitoring, prevention of internal leakage in the water bath vaporizer 5, and maintenance of stable system pressure. Specifically, the expansion tank 6 may include an exhaust port 65, at which a combustible gas detector (not shown) can be installed. When the medium enters the expansion tank 6, if the combustible gas detector detects a methane leak, the methane can be discharged through the exhaust port 65 of the expansion tank 6.

[0048] Please continue reading Figure 1 The system also includes a first controllable valve 7, which can be a controllable one-way solenoid valve. The inlet of the first controllable valve 7 can be connected to the second section 22 at the first position 221 of the second section 22, and the outlet of the first controllable valve 7 can be connected to the medium output channel 4. When the first controllable valve 7 is closed, the medium can be heated by the energy conversion device and then input into the water bath vaporizer 5; when the first controllable valve 7 is open, the medium can be directly input into the water bath vaporizer 5 through the medium output channel 4 without being heated by the energy conversion device.

[0049] The system also includes a second controllable valve 8, whose inlet can be connected to the second outlet 63 of the tank, i.e., the expansion tank 6. The second controllable valve 8 can be the same type of valve as the first controllable valve 7. The outlet of the second controllable valve 8 can be connected to a discharge pipeline. When the second controllable valve 8 is open, it can be used to discharge the water medium in the expansion tank 6 overboard, i.e., out of the ship; when the second controllable valve 8 is closed, it can be used to prevent the water in the expansion tank 6 from being discharged through the second outlet 63. In other words, the water in the tank can be discharged out of the ship through the second outlet 63 and the second controllable valve 8.

[0050] The system provided in this application embodiment may further include at least one temperature detection unit for detecting the temperature of the medium associated with the heat exchange equipment or enclosure. The temperature detection unit may be located inside the heat exchange equipment or enclosure, or at the outlet or inlet of the heat exchange equipment or enclosure, to detect the medium temperature.

[0051] Please continue reading Figure 1The system also includes a first temperature detection unit 53, a second temperature detection unit 54, and a third temperature detection unit 64. Each temperature detection unit can be a temperature probe or a temperature sensor. The first temperature detection unit 53 is located at the inlet of the water bath vaporizer 5 and is used to detect the medium temperature at the inlet of the water bath vaporizer 5. The second temperature detection unit 54 is located at the outlet of the water bath vaporizer 5 and is used to detect the medium temperature at the outlet of the water bath vaporizer 5. The third temperature detection unit 64 is located inside the expansion tank 6 and is used to detect the medium temperature inside the expansion tank 6.

[0052] The system may also include a circulation pump, specifically a hot water circulation pump 223, located on the second section 22 of the medium input channel 2, specifically between the inlet of the first controllable valve 7 and the communication point of the second section 22, and the first outlet 62 of the tank. The circulation pump can be used to assist the flow of the medium, thereby accelerating its flow. Specifically, the medium in the expansion tank 6 can be rapidly pumped into the energy conversion device by the hot water circulation pump 223 on the second section 22.

[0053] Please continue reading Figure 1 The second segment 22 can also be equipped with a second position 222, and a solenoid valve can be located between the second position 222 and the first outlet 62 of the expansion tank 6. A media input branch can also be provided within the system. One end of this media input branch is port G, which, like ports A and C in the system, can be used to input water into the system; that is, port G can be connected to the source of the media. The other end of this media input branch can be the second position 222, allowing media such as water to be input into the system via port G, the media input branch, and the second segment 22. Ports A, C, and E can all supply water to the system via shaft-driven pumps of the corresponding main units.

[0054] The system may also include a second three-way valve 41, located on the medium output channel 4. The three ports of the second three-way valve 41 can be connected to port D, the first medium outlet 12 of the right main unit 1, and the second medium inlet of the water bath vaporizer 5, respectively. Port D, similar to port C, can be connected to the source of the medium, allowing water bodies such as river water to be directly introduced into the water jacket. If the water jacket is not needed, but the main unit is running, introducing medium through port D can cool the exhaust pipe and prevent the water jacket from burning dry.

[0055] The heat exchange equipment may also include a gaseous gas outlet, and the energy conversion equipment may include a fuel inlet. The gaseous gas outlet may be connected to the fuel inlet to input the gas converted by the heat exchange equipment into the energy conversion equipment through the gaseous gas outlet and the fuel inlet, so as to provide gaseous fuel for the energy conversion equipment.

[0056] In other words, gaseous fuel generated from heat provided by energy conversion equipment (such as an engine) can be directly used to operate that energy conversion equipment.

[0057] The system may further include a controller electrically connected to the first controllable valve 7, the second controllable valve 8, the first three-way valve 24, the second three-way valve 41, and each temperature detection unit. The controller controls at least one of these valves based on the temperature detected by each temperature detection unit, ensuring that the temperature detected by each unit meets a preset temperature condition. This preset temperature condition is used to ensure that the rate at which the heat exchange equipment converts gaseous gases meets predetermined requirements. The controller can be electrically connected to each valve and each temperature detection unit remotely.

[0058] The controller can control the opening and closing of any controllable valve, and control the opening or closing of any port of a three-way valve.

[0059] Preset requirements can be requirements under the current operating conditions. Preset requirements can also be dynamically adjusted, meaning the preset temperature conditions can be dynamically adjusted. Different operating conditions can correspond to different requirements, or they can correspond to different preset temperature conditions.

[0060] The current preset temperature conditions can be determined based on at least one of the following parameters: the performance parameters of the ship's propulsion system (such as the engine), the ship's current power requirements, and the ship's navigation status.

[0061] The correspondence between parameters and preset temperature conditions can be set through pre-calibrated rules, and then the corresponding preset temperature conditions can be determined based on the current parameters according to this correspondence.

[0062] Of course, a temperature condition prediction model can also be pre-trained. The current parameters can be input into the temperature condition prediction model to obtain the preset temperature conditions output by the model.

[0063] When the system includes multiple energy conversion devices, it may also include multiple heat exchange devices and corresponding medium output channels for each heat exchange device. Each energy conversion device can provide a heat-carrying medium to its corresponding heat exchange device, and each heat exchange device can provide a gaseous gas to its corresponding energy conversion device. The outlet of the first controllable valve is connected to the corresponding medium output channel of each heat exchange device. Since the heat exchange devices can operate at different times, by connecting the outlet of the first controllable valve to the corresponding medium output channel of each heat exchange device, the process corresponding to different heat exchange devices can be controlled using the first controllable valve.

[0064] When the system includes multiple energy conversion devices and multiple heat exchange devices, each energy conversion device can be associated with a specific heat exchange device. Please continue reading... Figure 1 As shown, the system includes a right host 1 and a left host 9, each corresponding to a heat exchange device. The right host 1 can correspond to the water bath vaporizer 5 on the right side, and the left host 9 can correspond to the water bath vaporizer on the left side.

[0065] When a system includes multiple energy conversion devices and multiple heat exchange devices, the number of energy conversion devices can be greater than the number of heat exchange devices, with at least two energy conversion devices corresponding to the same heat exchange device. For example, please see [link to relevant documentation]. Figure 1 As shown, the parking generator 10 is also an energy conversion device, and it and the left main unit 9 are both associated with the water bath vaporizer on the left.

[0066] exist Figure 1 Each of the two water bath vaporizers shown can be equipped with a corresponding valve. If the main unit corresponding to a water bath vaporizer is not running, the valve corresponding to that water bath vaporizer can be closed.

[0067] In one embodiment of this application, under the control of the controller, the flow path of the medium includes at least one of the following: First flow path: the medium flows from its source through the third segment 23 into the first three-way valve 24, through the first port 241 of the first three-way valve 24, the second segment 22, and the first controllable valve 7 into the medium output channel 4, through the medium output channel 4 and the second medium inlet 51 of the heat exchange device (i.e., the water bath vaporizer 5) into the heat exchange device (i.e., the water bath vaporizer 5), through the second medium outlet 52 into the tank (i.e., the expansion tank 6), and through the second outlet 63 of the tank (i.e., the expansion tank 6) and the second controllable valve 8 out of the ship; Second flow path: the medium flows from its source through the third segment 23 into the first three-way valve 24, through the outlet of the first three-way valve 24, the first segment 21, and the second medium outlet 52 into the tank (i.e., the expansion tank 6), and out of the ship through the second outlet 63 of the tank (i.e., the expansion tank 6) and the second controllable valve 8; The first medium inlet 11 flows into the energy conversion device, then through the first medium outlet 12 and the medium output channel 4 into the heat exchange device (i.e., water bath vaporizer 5), then through the second medium outlet 52 of the heat exchange device (i.e., water bath vaporizer 5) into the tank (i.e., expansion tank 6), and finally through the second outlet 63 of the tank (i.e., expansion tank 6) and the second controllable valve 8 to exit the ship; the third flow path: from the first outlet 62 of the tank (i.e., expansion tank 6), sequentially through the second section 22 and the first three-way valve 24 into the first section 21, then through the first medium inlet 11 into the energy conversion device, then through the first medium outlet 12 and the medium output channel 4 into the heat exchange device (i.e., water bath vaporizer 5), and finally through the second medium outlet 52 of the heat exchange device (i.e., water bath vaporizer 5) into the tank (i.e., expansion tank 6).

[0068] For example, for the first flow path, the controller needs to connect the first port 241 of the first three-way valve 24 to the second port 242, connect the first controllable valve 7, and open the valve before the second medium inlet 51 of the corresponding water bath vaporizer 5.

[0069] In one embodiment of this application, under the control of the controller, the flow path of the medium further includes: a fourth flow path: the medium flows from its source through the third segment 23 into the first three-way valve 24, and from the first outlet 62 of the tank (i.e., expansion tank 6) through the second segment 22 into the first three-way valve 24, then through the outlet of the first three-way valve 24, the first segment 21, and the first medium inlet 11 into the energy conversion device, then through the first medium outlet 12 and the medium output channel 4 into the heat exchange device (i.e., water bath vaporizer 5), then through the second medium outlet 52 of the heat exchange device (i.e., water bath vaporizer 5) into the tank (i.e., expansion tank 6), and finally through the second outlet 63 of the tank (i.e., expansion tank 6) and the second controllable valve 8 out of the ship; wherein, the proportion of the medium flowing into the first three-way valve 24 from different paths is determined by the controller based on the temperature detected by each of the temperature detection units.

[0070] The controller can determine the proportion of media flowing into the first three-way valve from different paths based on the temperature detected by each temperature detection unit.

[0071] In one embodiment of this application, after the system starts running, the controller is configured to control each valve to allow the medium to flow through the first flow path when the temperature detected by each of the temperature detection units meets the preset temperature condition, and to control each valve to allow the medium to flow through the second flow path when the temperature detected by each of the temperature detection units is lower than the preset temperature condition; the controller is further configured to control each valve to allow the medium to flow through the third flow path after the medium has flowed through the second flow path, and to control each valve to allow the medium to flow through the fourth flow path after the temperature detected by each of the temperature detection units exceeds the preset temperature condition after the medium has flowed through the third flow path.

[0072] Of course, the controller can also be used to control the valves to make the medium flow through the third flow path when the temperature detected by each temperature detection unit is lower than the preset temperature condition.

[0073] The first, second, and fourth flow paths are open circulation, i.e., external circulation; the third flow path is closed circulation, i.e., internal circulation. By complementing the two circulation methods, the drawbacks of the single circulation method can be effectively mitigated, adapting to the influence of different seasons and regions, and achieving a fixed water temperature. This ensures that the gas supply is not affected and that excessive BOG gas is not generated. The two circulation methods can be integrated and remotely controlled.

[0074] When the temperature detected by each temperature detection unit exceeds the preset temperature condition, the medium is controlled to flow through the fourth flow path by controlling each valve, which can achieve water mixing and ensure that the temperature detected by each temperature detection unit returns to the preset temperature condition.

[0075] When the medium flows through the fourth flow path, it can still flow out through the second outlet 63 of the expansion tank 6.

[0076] The temperatures detected by each of the temperature detection units meet preset temperature conditions. For example, the difference between the medium temperature at the inlet of the water bath vaporizer 5 obtained by the first temperature detection unit 53 and the medium temperature at the outlet of the water bath vaporizer 5 obtained by the second temperature detection unit 54 is between a first preset temperature difference threshold and a second preset temperature difference threshold. The first preset temperature difference threshold may be, for example, 40 degrees Celsius. The second preset temperature difference threshold may be, for example, 50 degrees Celsius.

[0077] The temperature detected by each temperature detection unit is lower than the preset temperature condition. For example, the difference between the medium temperature at the inlet of the water bath vaporizer 5 obtained by the first temperature detection unit 53 and the medium temperature at the outlet of the water bath vaporizer 5 obtained by the second temperature detection unit 54 is less than the first preset temperature difference threshold.

[0078] The temperature detected by each temperature detection unit exceeds the preset temperature condition. For example, the difference between the medium temperature at the inlet of the water bath vaporizer 5 obtained by the first temperature detection unit 53 and the medium temperature at the outlet of the water bath vaporizer 5 obtained by the second temperature detection unit 54 is greater than the second preset temperature difference threshold.

[0079] Of course, the temperature detected by each temperature detection unit can also satisfy the preset temperature condition if the medium temperature at the inlet of the water bath vaporizer 5 obtained by the first temperature detection unit 53 or the medium temperature in the expansion tank 6 obtained by the third temperature detection unit 64 is between the first preset temperature and the second preset temperature, where the second preset temperature is greater than the first preset temperature. The second preset temperature can be 40 degrees Celsius and the first preset temperature can be 30 degrees Celsius. The temperature detected by each temperature detection unit can also be lower than the preset temperature condition if the medium temperature at the inlet of the water bath vaporizer 5 obtained by the first temperature detection unit 53 or the medium temperature in the expansion tank 6 obtained by the third temperature detection unit 64 is less than the first preset temperature. The temperature detected by each temperature detection unit can also exceed the preset temperature condition if the medium temperature at the inlet of the water bath vaporizer 5 obtained by the first temperature detection unit 53 or the medium temperature in the expansion tank 6 obtained by the third temperature detection unit 64 is greater than the second preset temperature.

[0080] Please continue reading Figure 1As shown, it also shows two hot water circulation pumps, which are respectively set on two branches of the second section 22. They serve as backups for each other, and one hot water circulation pump can be used when the other hot water circulation pump is under maintenance.

[0081] In summary, the liquid gas vaporization system provided in this application embodiment can effectively and accurately control the temperature of the LNG water bath vaporizer inlet by controlling the temperature of the natural gas inlet and outlet of the LNG water bath vaporizer. It also effectively solves the problems of insufficient gas supply due to low water temperature in open-loop circulation and waste of BOG gas due to excessively high temperature in closed-loop circulation. By complementing the two circulation methods, the circulating water temperature is controlled within a reasonable range to ensure the gas supply under various operating conditions of the ship. Therefore, the following technical effects can be achieved: 1. It provides a constant heat source to ensure the temperature of natural gas at the vaporizer outlet, and realizes reliable control of the natural gas vaporization rate, which greatly reduces the possibility of insufficient power or waste of resources in the power system.

[0082] 2. By adjusting the temperature of the natural gas at the vaporizer outlet, the temperature of the heat source can be accurately controlled.

[0083] 3. It achieves integrated control of open and closed circulation, adapts to different working conditions, and optimizes the control process of circulating water.

[0084] 4. It reduces the emission of BOG (Boil Off Gas) produced by the evaporation of liquefied natural gas (LNG), thus reducing resource waste.

[0085] 5. By utilizing the heat dissipation energy from the exhaust pipe for heating, the heat from the exhaust pipe can be recovered and utilized, achieving energy conservation and emission reduction.

[0086] According to one aspect of the embodiments of this application, a ship is provided, the ship including a liquid gas vaporization system as described in the above embodiments.

[0087] Figure 2 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown.

[0088] It should be noted that, Figure 2 The computer system 200 of the electronic device shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0089] like Figure 2As shown, the computer system 200 includes a Central Processing Unit (CPU) 201, which can perform various appropriate actions and processes based on programs stored in Read-Only Memory (ROM) 202 or programs loaded from storage portion 208 into Random Access Memory (RAM) 203, such as performing the methods described in the above embodiments. The RAM 203 also stores various programs and data required for system operation. The CPU 201, ROM 202, and RAM 203 are interconnected via a bus 204. An Input / Output (I / O) interface 205 is also connected to the bus 204.

[0090] The following components are connected to I / O interface 205: an input section 206 including a keyboard, mouse, etc.; an output section 207 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 208 including a hard disk, etc.; and a communication section 209 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 209 performs communication processing via a network such as the Internet. A drive 210 is also connected to I / O interface 205 as needed. Removable media 211, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 210 as needed so that computer programs read from them can be installed into storage section 208 as needed.

[0091] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 209, and / or installed from removable medium 211. When the computer program is executed by central processing unit (CPU) 201, it performs various functions defined in the system of this application.

[0092] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium, a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such transmitted data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0093] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0094] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0095] In one aspect, this application also provides a computer-readable medium, which may be included in the electronic device described in the above embodiments; or it may exist independently and not assembled into the electronic device. The computer-readable medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to perform the methods described in the above embodiments.

[0096] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided and embodied by multiple modules or units.

[0097] Through the above description of the embodiments, those skilled in the art will readily understand that the exemplary embodiments described herein can be implemented by software or by combining software with necessary hardware. Therefore, the technical solutions according to the embodiments of this application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (such as a CD-ROM, USB flash drive, external hard drive, etc.) or on a network, including several instructions to cause a computing device (such as a personal computer, server, touch terminal, or network device, etc.) to execute the methods according to the embodiments of this application.

[0098] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the embodiments disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein.

[0099] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A vaporization system for liquid gas, characterized in that, include: An energy conversion device includes a first medium inlet and a first medium outlet, the energy conversion device being used to transfer generated heat to a medium flowing into the energy conversion device via the first medium inlet; The medium input channel includes a first segment, a second segment, and a third segment, with one end of the first segment connected to the first medium inlet; The first three-way valve is located between the three sections of the medium input channel. The other end of the first section is connected to the outlet of the first three-way valve, one end of the second section is connected to the first port of the first three-way valve, one end of the third section is connected to the second port of the first three-way valve, and the other end of the third section is connected to the source of the medium. A medium output channel, one end of which is connected to the first medium outlet; A heat exchange device includes a second medium inlet and a second medium outlet, with the other end of the medium output channel connected to the second medium inlet; the heat exchange device is used to convert liquid gas into gas based on the heat provided by the medium flowing in through the second medium inlet; The housing includes an inlet, a first outlet, and a second outlet; the inlet is connected to the second medium outlet, and the first outlet is connected to the other end of the second segment. A first controllable valve; the inlet of the first controllable valve is connected to the second section, and the outlet of the first controllable valve is connected to the medium output channel; The second controllable valve is connected to the second outlet of the housing; At least one temperature detection unit is provided for detecting the temperature of the medium associated with the heat exchange equipment or the enclosure. The controller is electrically connected to the first controllable valve, the second controllable valve, the first three-way valve, and each of the temperature detection units, and is used to control at least one of the first controllable valve, the second controllable valve, and the first three-way valve according to the temperature detected by each of the temperature detection units, so that the temperature detected by each of the temperature detection units meets a preset temperature condition, which is used to ensure that the rate at which the heat exchange equipment converts into gaseous gas meets a predetermined requirement.

2. The liquid gas vaporization system according to claim 1, characterized in that, The heat exchange device includes a gaseous gas outlet, and the energy conversion device includes a fuel inlet. The gaseous gas outlet is connected to the fuel inlet and is used to input the gas converted by the heat exchange device into the energy conversion device through the gaseous gas outlet and the fuel inlet, so as to provide gaseous fuel to the energy conversion device.

3. The liquid gas vaporization system according to claim 2, characterized in that, The system is located on a ship, the energy conversion device is an engine or generator, the medium is water, the source of the medium is the water that carries the ship, and the tank is an expansion tank for loading water.

4. The liquid gas vaporization system according to claim 2, characterized in that, Under the control of the controller, the flow path of the medium includes at least one of the following: First flow path: The medium flows from the source of the medium through the third section into the first three-way valve, through the first port of the first three-way valve, the second section and the first controllable valve into the medium output channel, through the medium output channel and the second medium inlet of the heat exchange device into the heat exchange device, through the second medium outlet into the housing, and through the second outlet of the housing and the second controllable valve out of the ship; The second flow path is as follows: the medium flows from the source of the medium into the first three-way valve through the third section, then into the energy conversion device through the outlet of the first three-way valve, the first section, and the first medium inlet, then into the heat exchange device through the first medium outlet and the medium output channel, then into the housing through the second medium outlet of the heat exchange device, and finally out of the ship through the second outlet of the housing and the second controllable valve. The third flow path is as follows: from the first outlet of the housing, it flows into the first section through the second segment and the first three-way valve, into the energy conversion device through the first medium inlet, into the heat exchange device through the first medium outlet and the medium output channel, and into the housing through the second medium outlet of the heat exchange device.

5. The liquid gas vaporization system according to claim 4, characterized in that, Under the control of the controller, the flow path of the medium further includes: The fourth flow path: the medium flows from its source through the third segment into the first three-way valve, and from the first outlet of the housing through the second segment into the first three-way valve, then through the outlet of the first three-way valve, the first segment, and the first medium inlet into the energy conversion device, then through the first medium outlet and the medium output channel into the heat exchange device, then through the second medium outlet of the heat exchange device into the housing, and finally through the second outlet of the housing and the second controllable valve out of the ship; wherein, the proportion of the medium flowing into the first three-way valve from different paths is determined by the controller based on the temperature detected by each of the temperature detection units.

6. The liquid gas vaporization system according to claim 5, characterized in that, After the system starts running, the controller is used to control each valve to allow the medium to flow through the first flow path when the temperature detected by each of the temperature detection units meets the preset temperature condition, and to control each valve to allow the medium to flow through the second flow path when the temperature detected by each of the temperature detection units is lower than the preset temperature condition; the controller is also used to control each valve to allow the medium to flow through the third flow path after the medium has flowed through the second flow path, and to control each valve to allow the medium to flow through the fourth flow path after the temperature detected by each of the temperature detection units exceeds the preset temperature condition after the medium has flowed through the third flow path.

7. The liquid gas vaporization system according to claim 1, characterized in that, The system includes multiple energy conversion devices, multiple heat exchange devices, and media output channels corresponding to the multiple heat exchange devices. Each energy conversion device is used to provide a medium carrying heat to the corresponding heat exchange device, and each heat exchange device is used to provide gaseous gas to the corresponding energy conversion device. The outlet of the first controllable valve is connected to the media output channel corresponding to each heat exchange device.

8. The liquid gas vaporization system according to claim 7, characterized in that, Each energy conversion device and each heat exchange device corresponds one-to-one; or The system includes a greater number of energy conversion devices than the system includes a number of heat exchange devices, with at least two energy conversion devices corresponding to the same heat exchange device.

9. The liquid gas vaporization system according to claim 1, characterized in that, Also includes: A circulation pump, located on the second section, is used to assist the flow of the medium.

10. The liquid gas vaporization system according to claim 3, characterized in that, The energy conversion device includes an exhaust pipe, through which the generated heat is transferred to the medium flowing into the energy conversion device.

11. A ship, characterized in that, The vessel includes a liquid gasification system as described in any one of claims 1-10.

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