Box type natural gas supply device

Abstract

The utility model provides a box type natural gas supply device which comprises a box body, a gasification module, a pressure regulating and metering module and a diffusion module, and the gasification module, the pressure regulating and metering module and the diffusion module are all installed in an installation cavity of the box body so as to facilitate moving and splicing of the box type natural gas supply device. Therefore, the box type natural gas supply device can be rapidly arranged and used. The gasification module is communicated with an external gas source so as to gasify the liquefied natural gas, and the gaseous natural gas is conveyed to gas utilization equipment through pressure regulation and metering of the pressure regulation and metering module. And the diffusion module is communicated with the gasification module and is used for heating diffused EAG gas so as to ensure the use safety of the gas supply device. The gasification module is located at the end of the box body, and balance of the weight of the box body can be guaranteed. The gasification module comprises a plurality of gasifiers which are arranged in parallel, so that a user can select and conduct the gasifiers according to actual gas supply requirements to ensure the gasification flow and further meet different gas supply requirements.

Description

Technical Field

[0001] This utility model relates to the technical field of natural gas supply equipment, and in particular to a box-type natural gas supply device. Background Technology

[0002] Natural gas, as a relatively clean fossil energy source, is increasingly widely used in power generation, industrial production, and residential life, driving the growth in market demand for LNG regasification units. An LNG regasification unit typically consists of: unloading equipment, regasification equipment, pressure regulating, metering, and odorization devices, a safety venting system, a BOG recovery system, and an instrumentation and control system.

[0003] However, traditional LNG regasification stations have high construction costs, and the lack of unified standards for small and medium-sized regasification units results in poor equipment versatility. Furthermore, the fixed gas supply flow of regasification stations makes expansion difficult, hindering user adoption and market promotion. Utility Model Content

[0004] The purpose of this utility model is to provide a box-type natural gas supply device that can integrate a gasification system and is convenient for users to combine and use according to different needs to meet actual gas supply requirements.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] According to one aspect of this utility model, a box-type natural gas supply device is provided, comprising: a box body having an installation cavity inside; a gasification module installed in the installation cavity; the gasification module being connected to an external gas source to gasify liquefied natural gas; a pressure regulating and metering module installed in the installation cavity; the pressure regulating and metering module being connected between the gasification module and a gas-consuming device to adjust the gas pressure of the gaseous natural gas flowing out of the gasification module, and to deliver the pressure-regulated gaseous natural gas to the gas-consuming device and to perform metering; and a venting module installed in the installation cavity; the venting module being connected to the gasification module for heating the vented gas; wherein the gasification module includes multiple gasifiers; the multiple gasifiers are arranged in parallel and located at the end of the box body.

[0007] In one embodiment of this application, the box-type natural gas supply device further includes an unloading module; the unloading module is installed in the mounting cavity and located at the end of the box away from the gasification module; the unloading module is connected to the external gas source to pressurize the external gas source so that the external gas source can supply liquefied natural gas to the gasification module.

[0008] In one embodiment of this application, the unloading module is provided with a booster, multiple booster liquid inlets, and multiple booster gas phase inlets; the multiple booster liquid inlets and multiple booster gas phase inlets are simultaneously connected to the booster; the vaporization module is provided with multiple vaporization liquid inlets; the multiple booster liquid inlets, multiple booster gas phase inlets, and multiple vaporization liquid inlets can be simultaneously connected to multiple external gas sources; each external gas source is connected to the unloading module through one of the booster liquid inlets and one of the booster gas phase inlets, and is connected to the vaporization module through one vaporization liquid inlet, so that under the boosting of the unloading module, the liquefied natural gas in the external gas source flows from the vaporization liquid inlet into the vaporization module.

[0009] In one embodiment of this application, the box-type natural gas supply device further includes a control module; the control module is installed in the mounting cavity; the control module is electrically connected to the gasification module, the pressure regulating and metering module, the venting module and the unloading module, for controlling the opening or closing of the gasification module, the pressure regulating and metering module, the venting module and the unloading module.

[0010] In one embodiment of this application, the gasification module includes multiple gasification pipelines; the multiple gasification pipelines are arranged in parallel, and each gasification pipeline is connected to a gasification valve and a gasifier, so that the gasification valve can individually control the opening or closing of the gasification pipeline.

[0011] In one embodiment of this application, the pressure regulating and metering module includes multiple pressure regulating and metering pipelines; the multiple pressure regulating and metering pipelines are arranged in parallel, and each pressure regulating and metering pipeline can be individually turned on or off; each pressure regulating and metering pipeline includes a flow meter and a pressure regulating valve arranged in series, the pressure regulating valve is used to adjust the gas pressure in the pressure regulating and metering pipeline, and the flow meter is used to measure the natural gas flowing through the pressure regulating and metering pipeline.

[0012] In one embodiment of this application, the box-type natural gas supply device further includes a valve drive module; the valve drive module is installed in the mounting cavity and is used to provide a power source to drive the valves on each pipeline to open or close.

[0013] In one embodiment of this application, the valve driving module includes multiple driving gas cylinders; the driving gas cylinders are used to provide a driving gas source to drive the valves on each pipeline to open or close.

[0014] In one embodiment of this application, two gasification modules are provided; the two gasification modules are arranged in parallel and are both connected between an external gas source and the pressure regulating and metering module to gasify liquefied natural gas.

[0015] In one embodiment of this application, the box-type natural gas supply device further includes a gasification box; a gasification module is provided inside the gasification box; the gasification box can be spliced ​​onto the box body and is located on the side of the box body away from the gasification module; the gasification module inside the gasification box can be connected between the external gas source and the pressure regulating and metering module inside the box body.

[0016] As can be seen from the above technical solution, this utility model has at least the following advantages and positive effects:

[0017] In this invention, the box-type natural gas supply device includes a box body, a vaporization module, a pressure regulating and metering module, and a venting module. The vaporization module, pressure regulating and metering module, and venting module are all installed within the mounting cavity of the box body to facilitate the movement and assembly of the box-type natural gas supply device, enabling rapid deployment and use. Simultaneously, the vaporization module connects to an external gas source to vaporize liquefied natural gas, and the pressure regulating and metering module regulates and measures the gaseous natural gas, thereby delivering it to the gas-consuming equipment. The venting module connects to the vaporization module and is used to heat the vented EAG gas to ensure safe venting and thus the safe operation of the gas supply device. Furthermore, the vaporization module is located at the end of the box body to ensure the weight balance of the box body. The vaporization module includes multiple vaporizers connected in parallel, allowing users to select the vaporizer to operate according to actual gas supply needs, ensuring sufficient vaporization flow and meeting diverse gas supply requirements. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the box-type natural gas supply device according to an embodiment of the present invention.

[0019] Figure 2 yes Figure 1 A schematic diagram of a box-type natural gas supply unit.

[0020] Figure 3 yes Figure 2 The cross-sectional view of AA.

[0021] Figure 4 yes Figure 1 A schematic diagram of a box-type natural gas supply unit.

[0022] Figure 5 yes Figure 4 The cross-sectional view of BB.

[0023] The annotations in the attached figures are explained as follows:

[0024] 10-Box body; 11-Installation cavity; 12-Vaporization box; 20-Vaporization module; 21-Vaporizer; 22-Vaporization liquid inlet; 23-Vaporization pipeline; 24-Vaporization valve; 25-Liquid inlet; 30-Pressure regulating and metering module; 31-Pressure regulating and metering pipeline; 32-Flow meter; 33-Pressure regulating valve; 40-Venting module; 50-Unloading module; 51-Pressure booster; 52-Pressure booster liquid inlet; 53-Pressure booster gas phase inlet; 61-Control module; 62-Valve drive module; 63-Drive gas cylinder. Detailed Implementation

[0025] Typical embodiments embodying the features and advantages of this utility model will be described in detail in the following description. It should be understood that this utility model can have various variations in different embodiments, all of which do not depart from the scope of this utility model, and the descriptions and illustrations therein are for illustrative purposes only and not intended to limit this utility model.

[0026] In the description of this utility model, it should be understood that, in the embodiments shown in the accompanying drawings, the indications of direction or positional relationships (such as up, down, left, right, front, and back, etc.) are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. These descriptions are appropriate when these elements are in the positions shown in the accompanying drawings. If the description of the positions of these elements changes, these directional indications will also change accordingly.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] Traditional LNG regasification stations are costly to construct, and the lack of standardized specifications for small and medium-sized regasification units results in poor equipment versatility. Furthermore, the fixed gas supply flow of regasification stations makes expansion difficult, hindering user adoption and market promotion. Therefore, a box-type natural gas supply unit is proposed to address these issues.

[0029] The solution is further illustrated by the following examples:

[0030] Figure 1 This is a schematic diagram of the box-type natural gas supply device according to an embodiment of the present invention. Figure 2 yes Figure 1 A schematic diagram of a box-type natural gas supply unit. Figure 3 yes Figure 2 The cross-sectional view of AA.

[0031] Please see Figure 1 , Figure 2 and Figure 3 The box-type natural gas supply device of this embodiment can be connected between an external gas source and a gas-consuming device to transfer natural gas from the external gas source to the gas-consuming device. The external gas source can be a natural gas skid, a natural gas tanker truck, or a natural gas tank container, etc., capable of storing natural gas. The gas-consuming device can be a natural gas vehicle or a natural gas storage tank, etc.

[0032] In this embodiment, the box-type natural gas supply device may include a box body 10, a gasification module 20, a pressure regulating and metering module 30, a venting module 40, and an unloading module 50.

[0033] The box body 10 has an installation cavity 11 inside, and the gasification module 20, pressure regulating and metering module 30 and venting module 40 are all installed in the installation cavity 11 to facilitate the movement and use of the box-type natural gas supply device, so that the box-type natural gas supply device can be quickly installed or disassembled.

[0034] It should be noted that container 10 is a standard container frame structure to facilitate hoisting and transportation. Simultaneously, the frame structure features corner keys for standard containers, and its dimensions conform to container truck transportation requirements, ensuring the gas supply unit can be transported by sea and land, thereby improving transportation efficiency. Furthermore, the standardized and modular design of container 10 can meet the needs of small and medium-sized users or temporary gas supply requirements, improving the installation efficiency of gas supply equipment and meeting flexible gas usage requirements. At the same time, the standardized and modular design can also address the gas supply needs of large users when used in combination. Specifically, container 10 can be configured as a 20-foot or 40-foot container.

[0035] The gasification module 20 is connected to an external gas source to gasify liquefied natural gas, enabling the natural gas to be transferred from the external gas source to the gas-using equipment.

[0036] In this embodiment, the gasification module 20 may include multiple gasifiers 21, and the multiple gasifiers 21 are arranged in parallel, so that the gasification module 20 can select the number of gasifiers 21 to be connected and turned on according to the actual gasification needs, thereby controlling the gasification power of the gasification module 20, ensuring the operating efficiency of the gas supply device, and thus meeting the needs of different scenarios and markets.

[0037] Specifically, vaporizer 21 is an ambient temperature vaporizer. Furthermore, two 500Nm power units are installed within a 20-foot container. 3 A 1000Nm³ / h ambient temperature vaporizer is installed to meet vaporization requirements; and two 1000Nm³ / h air-temperature vaporizers are installed inside the 40-foot container. 3The ambient air vaporizer has a capacity of / h, which allows the 40-foot container to be adapted to scenarios with greater vaporization power requirements.

[0038] It should be noted that the vaporization module 20 may include multiple vaporization pipelines 23. The multiple vaporization pipelines 23 are connected in parallel, and each vaporization pipeline 23 is connected to a vaporization valve 24 and a vaporizer 21, so that the vaporization valve 24 can individually control the opening or closing of the vaporization pipeline 23. Thus, according to the output power requirements, multiple vaporization pipelines 23 can be connected to allow multiple vaporizers 21 to work simultaneously, thereby meeting the vaporization requirements.

[0039] In addition, multiple vaporizers 21 are located at the ends of the housing 10, and are located at opposite ends of the housing 10 along with modules such as the pressure regulating and metering module 30, the venting module 40, and the unloading module 50, thereby balancing the overall weight of the housing 10 and facilitating the hoisting and transportation of the housing 10.

[0040] See Figure 1 and Figure 2 The pressure regulating and metering module 30 is connected between the gasification module 20 and the gas-consuming equipment. Specifically, it is connected downstream of the gas outlet of the gasification module 20. This allows the pressure regulating and metering module 30 to adjust the pressure of the gaseous natural gas flowing from the gasification module 20 before delivering the regulated gaseous natural gas to the gas-consuming equipment. This ensures that the gas pressure of the gaseous natural gas meets the pressure requirements of different gas-consuming equipment, preventing excessively high pressure from affecting the equipment. Simultaneously, the pressure regulating and metering module 30 can also measure the output natural gas to determine the gas supply volume and facilitate trade settlement.

[0041] In this embodiment, the pressure regulating and metering module 30 may include multiple pressure regulating and metering pipelines 31, which are arranged in parallel. Each pressure regulating and metering pipeline 31 can be individually turned on or off, allowing each pipeline to independently regulate and meter pressure. In practical use, the pressure regulating and metering pipelines 31 are standardized and can be configured as a one-in-one standby system. That is, one pipeline among the multiple pressure regulating and metering pipelines 31 is in normal use, while the other serves as a backup pipeline. If the pipeline in use fails, the backup pipeline can be used promptly, thus ensuring continuous gas supply.

[0042] Specifically, the pressure regulating and metering pipeline 31 includes a flow meter 32 and a pressure regulating valve 33 connected in series. The pressure regulating valve 33 is used to adjust the gas pressure in the pressure regulating and metering pipeline 31, and the flow meter 32 is used to measure the natural gas flowing through the pressure regulating and metering pipeline 31.

[0043] In addition, the pressure regulating and metering module 30 is located inside the mounting cavity 11 and above the unloading module 50 to optimize the space within the mounting cavity 11. A canopy is also provided above the pressure regulating and metering module 30 to provide rain and sun protection, preventing exposure to sunlight and rain from affecting the flow meter 32 and the pressure regulating valve 33, and ensuring the working accuracy of the flow meter 32 and the pressure regulating valve 33.

[0044] See Figure 1 and Figure 2 The venting module 40, connected to the gasification module 20, is used to heat the EAG gas and vent it, thus ensuring the safety of the box-type natural gas supply unit. When natural gas is at a temperature approximately below -100°C, its density is greater than air; direct release would cause sedimentation and pose a safety hazard. Therefore, the venting module 40 is equipped with an EAG heater flame arrester and a segmented venting pipe. The EAG heater flame arrester heats the vented EAG gas, ensuring safe venting. Simultaneously, the venting pipe extends 2 meters above the top of the box 10 to ensure safe venting. Furthermore, the venting pipe uses flanged segmented connections to facilitate installation and disassembly, and to prevent the venting pipe from exceeding its height during transportation.

[0045] See Figure 1 , Figure 2 and Figure 3 The unloading module 50 can be installed in the mounting cavity 11 and located at the end of the box 10 away from the gasification module 20, so that the weight of the box is kept balanced.

[0046] Specifically, the unloading module 50 is connected to an external gas source to vaporize the liquefied natural gas (LNG) within the external gas source and transfer the vaporized LNG back to the external gas source, thereby increasing the pressure within the external gas source and enabling it to supply LNG to the vaporization module 20. For example, when the external gas source is a tanker truck, the unloading module 50 can vaporize the LNG within the tanker truck and transfer the vaporized LNG back to the tanker truck, thereby increasing the pressure within the tanker truck and facilitating the flow of LNG to the vaporization module 20.

[0047] In this embodiment, the unloading module 50 may be equipped with a booster 51, multiple booster liquid inlets 52, and multiple booster gas phase inlets 53. The multiple booster liquid inlets 52 and multiple booster gas phase inlets 53 are simultaneously connected to the booster 51, allowing the booster 51 to introduce liquefied natural gas through the booster liquid inlets 52 and to export vaporized natural gas through the booster gas phase inlets 53. Simultaneously, the vaporization module 20 may be equipped with multiple vaporization liquid inlets 22, which are used to connect to an external gas source. Under the boosting pressure of the unloading module 50, liquefied natural gas from the external gas source flows from the vaporization liquid inlets 22 into the vaporization module 20.

[0048] Meanwhile, both the booster liquid inlet 52 and the booster gas phase inlet 53 are connected to the booster 51 via valves, allowing the booster 51 to selectively connect to or disconnect from an external gas source. The vaporization liquid inlet 22 is also connected to an external gas source via a valve, allowing the vaporization module 20 to selectively connect to or disconnect from an external gas source.

[0049] Specifically, multiple pressurized liquid inlets 52, multiple pressurized gas phase inlets 53, and multiple vaporization liquid inlets 22 can be simultaneously connected to multiple external gas sources. Each external gas source is connected to the unloading module 50 through a pressurized liquid inlet 52 and a pressurized gas phase inlet 53, and to the vaporization module 20 through a vaporization liquid inlet 22. That is, each external gas source is connected to the gas supply device through three interfaces. Therefore, multiple external gas sources can be simultaneously connected to the gas supply device through multiple pressurized liquid inlets 52, multiple pressurized gas phase inlets 53, and multiple vaporization liquid inlets 22, allowing multiple external gas sources to supply gas to the gas supply device individually or simultaneously. This ensures that when switching between different external gas sources, there is always one external gas source that can take over the gas supply, preventing the gas supply device from stopping due to a lack of gas source.

[0050] In this embodiment, two booster liquid inlet 52, two booster gas phase inlet 53, and two vaporization liquid inlet 22 are provided, enabling the gas supply device to connect to two external gas sources simultaneously. Furthermore, the interfaces of the booster liquid inlet 52, the booster gas phase inlet 53, and the vaporization liquid inlet 22 are all standardized to facilitate connection with external pipelines.

[0051] It should be noted that the gasification module 20 can also be equipped with a separate liquid inlet 25, and the liquid inlet 25 can be directly connected to the storage tank, so that when the gas supply device is used as a fixed gas filling station, the liquid inlet 25 can be connected to the storage tank in the gas filling station.

[0052] See Figure 1 , Figure 2 and Figure 3 The box-type natural gas supply unit may also include a control module 61 and a valve drive module 62. The control module 61 is installed within the mounting cavity 11 and is electrically connected to the gasification module 20, pressure regulating and metering module 30, venting module 40, and unloading module 50 to control the opening and closing of these modules. Simultaneously, the valve drive module 62 is installed within the mounting cavity 11 and provides a power source to actuate the valves on each pipeline.

[0053] In this embodiment, the valve drive module 62 may include multiple drive gas cylinders 63, and the drive gas cylinders 63 are used to provide a drive gas source to drive the valves on each pipeline to open or close.

[0054] Of course, in some other embodiments, the valve drive module 62 may be equipped with a battery pack, and the valve in the gas supply device may be a solenoid valve, so that the battery pack can drive the valve to open or close.

[0055] It should be noted that the control module 61 is also electrically connected to the valve drive module 62, so that the control module 61 can operate or stop the valve drive module 62, thereby enabling the control module 61 to control the opening or closing of each passage.

[0056] Figure 4 yes Figure 1 A schematic diagram of a box-type natural gas supply unit. Figure 5 yes Figure 4 The cross-sectional view of BB.

[0057] See Figure 4 and Figure 5 Two gasification modules 20 can be provided, and the two gasification modules 20 are connected in parallel. The two gasification modules 20 are located on both sides of the pressure regulating and metering module 30 and the unloading module 50, respectively, so as to balance the weight inside the container 10. Both gasification modules 20 are connected between an external gas source and the same pressure regulating and metering module 30 for the gasification of liquefied natural gas.

[0058] In some other embodiments, the box-type natural gas supply device also includes a vaporization box 12, and a vaporization module 20 is provided inside the vaporization box 12. The vaporization box 12 can be spliced ​​onto the box body 10, and the vaporization box 12 is located on the side of the box body 10 away from the vaporization module 20, so that the vaporization module 20 inside the box body 10 and the vaporization module 20 inside the vaporization box 12 are located on both sides of the pressure regulating and metering module 30 and the unloading module 50, respectively, thereby balancing the weight inside the box body 10.

[0059] It should be noted that the vaporization module 20 inside the vaporization box 12 can be connected between the external gas source and the pressure regulating and metering module 30 inside the box 10, allowing the two vaporization modules 20 to vaporize simultaneously or separately. Furthermore, setting up two vaporization modules 20 increases the vaporization power of the gas supply device, enabling customers to flexibly connect the vaporization modules 20 according to actual needs, ensuring the gas supply capacity of the gas supply device.

[0060] In summary, the box-type natural gas supply unit includes a box body 10, a vaporization module 20, a pressure regulating and metering module 30, and a venting module 40. The vaporization module 20, pressure regulating and metering module 30, and venting module 40 are all installed within the mounting cavity 11 of the box body 10 to facilitate the movement and assembly of the box-type natural gas supply unit, enabling rapid deployment and use. Simultaneously, the vaporization module 20 connects to an external gas source to vaporize liquefied natural gas, and the pressure regulating and metering module 30 regulates and meters the gaseous natural gas, thereby delivering it to the gas-consuming equipment. The venting module 40 connects to the vaporization module 20 and is used to heat the vented EAG gas to ensure safe venting and thus the safe operation of the gas supply unit. Furthermore, the vaporization module 20 is located at the end of the box body 10, ensuring the weight balance of the box body. The vaporization module 20 includes multiple vaporizers 21, which are connected in parallel, so that users can select to activate the vaporizers 21 according to their actual gas supply needs to ensure the vaporization flow rate and thus meet different gas supply requirements.

[0061] Although the present invention has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since the present invention can be embodied in many forms without departing from the spirit or essence of the invention, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A box-type natural gas supply device, characterized in that, The box-type natural gas supply unit includes: The housing has an internal mounting cavity; A gasification module is installed inside the mounting cavity; the gasification module is connected to an external gas source to gasify liquefied natural gas. A pressure regulating and metering module is installed in the mounting cavity; the pressure regulating and metering module is connected between the gasification module and the gas-using equipment to adjust the gas pressure of the gaseous natural gas flowing out of the gasification module, and to deliver the pressure-regulated gaseous natural gas to the gas-using equipment and perform metering. A venting module is installed inside the mounting cavity; the venting module is connected to the gasification module for heating the vented gas. The gasification module includes multiple gasifiers; the multiple gasifiers are connected in parallel and located at the end of the housing.

2. The box-type natural gas supply device according to claim 1, characterized in that, It also includes an unloading module; the unloading module is installed in the mounting cavity and located at the end of the housing away from the gasification module; the unloading module is connected to the external gas source to pressurize the external gas source so that the external gas source can supply liquefied natural gas to the gasification module.

3. The box-type natural gas supply device according to claim 2, characterized in that, The unloading module is equipped with a booster, multiple booster liquid inlets, and multiple booster gas phase inlets; the multiple booster liquid inlets and multiple booster gas phase inlets are simultaneously connected to the booster; the vaporization module is equipped with multiple vaporization liquid inlets; Multiple pressurized liquid inlets, multiple pressurized gas phase inlets, and multiple vaporization liquid inlets can be connected to multiple external gas sources simultaneously; Each external gas source is connected to the unloading module through a pressurized liquid inlet and a pressurized gas phase inlet, and is also connected to the gasification module through a gasification liquid inlet, so that under the pressurization of the unloading module, the liquefied natural gas in the external gas source flows from the gasification liquid inlet into the gasification module.

4. The box-type natural gas supply device according to claim 2, characterized in that, It also includes a control module; the control module is installed in the mounting cavity; the control module is electrically connected to the gasification module, the pressure regulating and metering module, the venting module and the unloading module, for controlling the opening or closing of the gasification module, the pressure regulating and metering module, the venting module and the unloading module.

5. The box-type natural gas supply device according to claim 1, characterized in that, The gasification module includes multiple gasification pipelines; the multiple gasification pipelines are arranged in parallel, and each gasification pipeline is connected to a gasification valve and a gasifier, so that the gasification valve can individually control the opening or closing of the gasification pipeline.

6. The box-type natural gas supply device according to claim 1, characterized in that, The pressure regulating and metering module includes multiple pressure regulating and metering pipelines; the multiple pressure regulating and metering pipelines are arranged in parallel, and each pressure regulating and metering pipeline can be turned on or off individually; each pressure regulating and metering pipeline includes a flow meter and a pressure regulating valve arranged in series, the pressure regulating valve is used to adjust the gas pressure in the pressure regulating and metering pipeline, and the flow meter is used to measure the natural gas flowing through the pressure regulating and metering pipeline.

7. The box-type natural gas supply device according to claim 1, characterized in that, It also includes a valve drive module; the valve drive module is installed in the mounting cavity and is used to provide a power source to drive the valves on each pipeline to open or close.

8. The box-type natural gas supply device according to claim 7, characterized in that, The valve drive module includes multiple drive gas cylinders; the drive gas cylinders are used to provide a drive gas source to drive the valves on each pipeline to open or close.

9. The box-type natural gas supply device according to claim 1, characterized in that, Two gasification modules are provided; the two gasification modules are connected in parallel and are both connected between the external gas source and the pressure regulating and metering module to gasify liquefied natural gas.

10. The box-type natural gas supply device according to claim 1, characterized in that, It also includes a vaporization box; the vaporization box is provided with a vaporization module; the vaporization box can be spliced ​​onto the box body and is located on the side of the box body away from the vaporization module; the vaporization module in the vaporization box can be connected between the external gas source and the pressure regulating and metering module in the box body.

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