Liquefied natural gas storage and gasification device

Abstract

The utility model discloses a kind of liquefied natural gas storage gasification gas supply devices, it is related to liquefied natural gas application technical field, including box and be set on the storage container, gasifier, pressure regulator, control module, monitoring display instrument, detection mechanism and valve mechanism in box;The storage container is provided with two in parallel;Detection mechanism for detecting pipeline temperature, pressure, leakage is provided in the box, and valve mechanism is interlocked with detection mechanism Control, the detection mechanism and valve mechanism are electrically connected with the control module, and the control module is electrically connected with the monitoring display instrument.Storage container stores liquefied natural gas, liquefied natural gas enters gasifier, gasifier gasifies liquefied natural gas, and after gasification, input gas point after pressure is regulated by pressure regulator.Detection mechanism detects pipeline temperature, pressure, leakage, interlock control valve mechanism, prevent safety accident from happening, set intelligent detection, safety interlock, storage gasification pressure regulating and the like function.

Description

Technical Field

[0001] This utility model relates to the field of liquefied natural gas application technology, and more specifically to a liquefied natural gas storage, gasification and gas supply device. Background Technology

[0002] Natural gas has become a primary energy source for residential production and daily life, making its development and utilization particularly important. Especially with the increasing proportion of residential use, and even the "gasification of rural areas" strategy making the rural market a development target for various gas companies, the situation is complex. Rural areas are relatively remote, and laying gas pipelines is costly and time-consuming, making it impossible to meet gas supply requirements in a short period. Therefore, transporting liquefied natural gas (LNG) by truck to supply points, and then using processes such as gasification and pressure regulation to deliver it to users, is an economically feasible solution.

[0003] However, natural gas is an explosive medium, and its transmission and distribution equipment has high safety performance requirements. Therefore, there is an urgent need for an intelligent liquefied natural gas storage, gasification, and supply device that integrates intelligent detection, safety interlocking, storage, gasification, and pressure regulation functions to meet the requirements for safe gas supply. Utility Model Content

[0004] In order to overcome the defects in the existing technology, the purpose of this utility model is to provide a liquefied natural gas storage and gasification supply device that integrates intelligent detection, safety interlock, storage and gasification pressure regulation and other functions to meet the requirements of safe gas supply.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A liquefied natural gas storage, vaporization and gas supply device includes a housing and a storage container, vaporizer, pressure regulator, control module, monitoring and display instrument, detection mechanism and valve mechanism installed on the housing;

[0007] The storage containers are arranged in parallel. Each storage container is connected to a gas phase pipeline and a liquid phase pipeline. The gas phase pipeline is connected to a gas phase port and the liquid phase pipeline is connected to a liquid phase inlet. The two gas phase pipelines are connected to a main gas phase pipeline, and the two liquid phase pipelines are connected to a main liquid phase pipeline. The main gas phase pipeline and the main liquid phase pipeline are then connected to a main gas supply pipeline. The gasifier and pressure regulator are sequentially installed on the main gas supply pipeline along the material flow direction.

[0008] The housing is equipped with a detection mechanism for detecting pipeline temperature, pressure, and leakage, as well as a valve mechanism interlocked with and controlled by the detection mechanism. Both the detection mechanism and the valve mechanism are electrically connected to the control module, and the control module is electrically connected to the monitoring and display instrument.

[0009] Preferably, the testing organization includes:

[0010] Temperature transmitter installed on the main gas supply pipeline between the vaporizer and the pressure regulator;

[0011] Pressure transmitters are installed on the main gas supply pipeline after the pressure regulator and on the main gas phase pipeline.

[0012] A combustible gas detector assembled inside a housing for detecting natural gas leaks.

[0013] Preferably, the valve mechanism includes an emergency shut-off valve mounted on the liquid phase main pipeline, and the emergency shut-off valve is interlocked with the temperature transmitter, pressure transmitter and combustible gas detector.

[0014] Preferably, the detection mechanism further includes a level transmitter for detecting the liquid level in the storage container, the level transmitter being electrically connected to the control module.

[0015] Preferably, a switch detector is installed on the door of the enclosure, the switch detector is electrically connected to the control module, and the control module is connected to an alarm.

[0016] Preferably, the control module communicates with the terminal device via a wireless module.

[0017] Preferably, the gas phase pipe is inserted to the top of the inside of the storage container, and the liquid phase pipe is inserted to the bottom of the inside of the storage container.

[0018] Preferably, the vaporizer and the pressure regulator are both electrically connected to the control module.

[0019] Preferably, the monitoring and display instrument is mounted on the outer wall of the enclosure.

[0020] Preferably, the storage container is a Dewar flask or a cryogenic storage tank.

[0021] The beneficial effects of this utility model are:

[0022] 1. This utility model provides a liquefied natural gas (LNG) storage, vaporization, and gas supply device. The storage container holds LNG, which enters the main gas supply pipeline via a liquid phase pipeline and a main liquid phase pipeline. The LNG then enters the vaporizer from the main gas supply pipeline, where it vaporizes the LNG. After vaporization, the pressure is regulated by a pressure regulator before being supplied to the point of use. A detection mechanism monitors pipeline temperature, pressure, and leakage, and interlocks with valve mechanisms to prevent accidents. The device integrates intelligent detection, safety interlocking, storage, vaporization, and pressure regulation functions.

[0023] 2. The liquefied natural gas storage, vaporization and gas supply device provided by this utility model integrates functions such as storage, vaporization, pressure regulation, overpressure cut-off, overpressure venting, pressure monitoring, temperature monitoring, liquid level monitoring, leakage monitoring, intrusion alarm, wireless signal transmission and safety interlock, and has the characteristics of small size and multiple functions. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the liquefied natural gas storage, gasification, and gas supply device of this utility model;

[0025] Figure 2 This is a rendering of the liquefied natural gas storage, gasification, and gas supply device of this utility model.

[0026] Figure label:

[0027] 1. Storage container; 2. Vaporizer; 3. Pressure regulator; 4. Control module; 5. Monitoring and display instrument; 6. Detection mechanism; 61. Temperature transmitter; 62. Pressure transmitter; 63. Level transmitter; 7. Valve mechanism; 71. Emergency shut-off valve; 81. Gas phase pipeline; 82. Liquid phase pipeline; 83. Gas phase inlet; 84. Liquid phase inlet; 85. Gas phase main pipeline; 86. Liquid phase main pipeline; 87. Gas supply main pipeline. Detailed Implementation

[0028] The following will provide a clear and complete description of the concept, specific structure, and technical effects of this utility model in conjunction with the embodiments and accompanying drawings, so as to fully understand the purpose, features, and effects of this utility model.

[0029] A liquefied natural gas storage, gasification, and gas supply device, such as Figure 1 and Figure 2 As shown, it includes a housing and a storage container 1, a vaporizer 2, a pressure regulator 3, a control module 4, a monitoring and display instrument 5, a detection mechanism 6, and a valve mechanism 7 installed on the housing;

[0030] Two storage containers 1 are connected in parallel. Each storage container 1 is connected to a gas phase pipe 81 and a liquid phase pipe 82. The gas phase pipe 81 is connected to a gas phase port 83, and the liquid phase pipe 82 is connected to a liquid phase inlet 84. The two gas phase pipes 81 are connected to a gas phase main pipe 85, and the two liquid phase pipes 82 are connected to a liquid phase main pipe 86. The gas phase main pipe 85 and the liquid phase main pipe 86 are then connected to a gas supply main pipe 87. A vaporizer 2 and a pressure regulator 3 are installed sequentially on the gas supply main pipe 87 along the material flow direction.

[0031] The enclosure is equipped with a detection mechanism 6 for detecting pipeline temperature, pressure, and leakage, and a valve mechanism 7 that is interlocked with and controlled by the detection mechanism 6. Both the detection mechanism 6 and the valve mechanism 7 are electrically connected to the control module 4, and the control module 4 is electrically connected to the monitoring and display instrument 5.

[0032] In this embodiment, storage container 1 is used to store liquefied natural gas, vaporizer 2 is used to vaporize the liquefied natural gas, and pressure regulator 3 is used to regulate the pressure of the vaporized natural gas before delivering it to the point of use. Detection mechanism 6 is used to detect pipeline temperature, pressure, and leakage, and sends the detection information to control module 4. Control module 4 controls the opening and closing of corresponding valves in valve mechanism 7, and controls monitoring display instrument 5 to display the corresponding detection information.

[0033] In this embodiment, the liquefied natural gas storage, gasification, and gas supply unit adopts a box-type structure, which significantly reduces the footprint compared to conventional "gasification stations" or "cylinder stations." No on-site construction is required; it can be used immediately after hoisting into place, making it convenient and quick.

[0034] In this embodiment, two storage containers 1 are connected in parallel and adopt a box-type structure. On the one hand, the storage volume of two storage containers 1 is large, which can store more liquefied natural gas, and using two storage containers 1 is safer. When one storage container 1 cannot be used for some reason, the other storage container 1 can be used to store liquefied natural gas normally.

[0035] In the pipeline, gas phase pipeline 81 is used for the flow of gas phase materials; liquid phase pipeline 82 is used for the flow of liquid phase materials; gas phase outlet 83 is used for the discharge of gas phase materials; liquid phase inlet 84 is used for the entry of liquid phase materials; gas phase main pipeline 85 is used for the flow of gas phase materials; liquid phase main pipeline 86 is used for the flow of liquid phase materials; and gas supply main pipeline 87 is used for the flow of liquefied natural gas, for vaporization and pressure regulation.

[0036] like Figure 1 As shown, testing organization 6 includes:

[0037] Temperature transmitter 61 is installed on the main gas supply pipeline 87 between vaporizer 2 and pressure regulator 3;

[0038] Pressure transmitter 62 is installed on the main gas supply pipeline 87 after the pressure regulator 3 and on the main gas phase pipeline 85.

[0039] A combustible gas detector assembled inside a housing for detecting natural gas leaks.

[0040] The valve mechanism 7 includes an emergency shut-off valve 71 mounted on the liquid phase main pipeline 86. The emergency shut-off valve 71 is interlocked with the temperature transmitter 61, the pressure transmitter 62, and the combustible gas detector. In this embodiment, the valve mechanism 7 also includes valves installed on each pipeline to control the on / off state of each pipeline.

[0041] In this embodiment, temperature transmitter 61 is used to detect the temperature inside the main gas supply pipeline 87; pressure transmitter 62 on the main gas supply pipeline 87 is used to detect the pressure inside the main gas supply pipeline 87; combustible gas detector is used to detect whether natural gas is leaking inside the box and sends the detection information to control module 4. The control module makes a judgment based on the detection information. When an abnormality is detected, it controls emergency shut-off valve 71 to close the pipeline and stop the supply, and then manual inspection is carried out.

[0042] like Figure 1 As shown, the detection mechanism 6 also includes a level transmitter 63 for detecting the liquid level of the storage container 1. The level transmitter 63 is electrically connected to the control module 4. The level transmitter 63 is inserted from top to bottom to the bottom of the storage container 1 to detect the liquid level of the liquefied natural gas stored in the storage container 1.

[0043] A switch detector is installed on the door of the enclosure. The switch detector is electrically connected to the control module 4, and the control module 4 is connected to an alarm. The switch detector is used to detect the open / closed status of the door and sends the detected switch status information to the control module 4. When the control module detects an abnormal switch, it activates the alarm.

[0044] The control module 4 communicates with the terminal device via a wireless module. The terminal device can be a mobile phone, tablet, computer or other terminal device, which can remotely view the status of the liquefied natural gas storage, gasification and gas supply device.

[0045] like Figure 1 As shown, the gas phase pipe 81 is inserted into the top of the storage container 1, and the liquid phase pipe 82 is inserted into the bottom of the storage container 1.

[0046] Both vaporizer 2 and pressure regulator 3 are electrically connected to control module 4, and control module controls the operation of vaporizer 2 and pressure regulator 3.

[0047] The monitoring and display instrument 5 is mounted on the outer wall of the enclosure for easy viewing by staff. The storage container 1 is a Dewar flask or a cryogenic storage tank.

[0048] In this embodiment, the vaporizer 2, pressure regulator 3, control module 4, monitoring and display instrument 5, temperature transmitter 61, pressure transmitter 62, combustible gas detector, etc. can all be conventional structures in the prior art. Related products can be purchased in the existing market and then assembled into the device of this utility model.

[0049] To better understand this utility model, the working principle of this utility model will be described in detail below:

[0050] When refueling with liquefied natural gas, the liquefied natural gas is injected into the storage container 1 through the liquid phase inlet 84 and the liquid phase pipeline 82 for storage.

[0051] During gas supply, the liquefied natural gas stored in storage container 1 is vaporized in vaporizer 2 through liquid phase pipeline 82, liquid phase main pipeline 86, and gas supply main pipeline 87 (it can be transported by providing power through a pump). The vaporized natural gas then enters pressure regulator 3 for pressure regulation, and finally the pressure-regulated natural gas is transported to the gas consumption point.

[0052] This liquefied natural gas storage, vaporization, and gas supply unit integrates functions such as storage, vaporization, pressure regulation, overpressure cutoff, overpressure venting, pressure monitoring, temperature monitoring, liquid level monitoring, leakage monitoring, intrusion alarm, wireless signal transmission, and safety interlocking, as detailed below:

[0053] Storage: Storage container 1 stores liquefied natural gas.

[0054] Gasification: Gasifier 2 gasifies liquefied natural gas.

[0055] Pressure regulation: Pressure regulator 3 regulates the pressure of the gasified natural gas.

[0056] Overpressure cut-off: When the pressure transmitter 62 on the main gas supply pipeline 87 after the pressure regulator 3 detects overpressure, the control module 4 controls the emergency shut-off valve 71 to close the liquid phase main pipeline 86 and stop the supply to subsequent pipelines.

[0057] Overpressure release: When the pressure transmitter 62 on the gas phase main pipeline 85 detects overpressure, it controls the gas phase port 83 to release gas.

[0058] Pressure monitoring: Pressure transmitter 62 monitors pipeline pressure.

[0059] Temperature monitoring: Temperature transmitter 61 monitors pipeline temperature.

[0060] Liquid level monitoring: Liquid level transmitter 63 monitors the liquid level of storage container 1.

[0061] Leakage detection: Combustible gas detectors monitor natural gas leaks.

[0062] Intrusion alarm: The switch detector detects the open / closed status of the cabinet door and triggers an alarm.

[0063] Wireless signal transmission: Control module 4 communicates with the terminal device via a wireless module.

[0064] Safety interlock: Temperature transmitter 61, pressure transmitter 62 on the main gas supply pipeline 87 after pressure regulator 3, and combustible gas detector are interlocked with emergency shut-off valve 71. When an abnormality is detected, the control module controls emergency shut-off valve 71 to close the pipeline.

[0065] The embodiments of this utility model have been described in detail above, but this utility model is not limited to the described embodiments. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of this utility model, and these equivalents or substitutions are all included within the scope defined by the claims of this utility model.

Claims

1. A liquefied natural gas storage, gasification, and gas supply device, characterized in that, It includes a housing and a storage container (1), a vaporizer (2), a pressure regulator (3), a control module (4), a monitoring and display instrument (5), a detection mechanism (6), and a valve mechanism (7) installed on the housing; The storage container (1) is arranged in parallel with two of them. Each storage container (1) is connected to a gas phase pipe (81) and a liquid phase pipe (82). The gas phase pipe (81) is connected to a gas phase port (83), and the liquid phase pipe (82) is connected to a liquid phase inlet (84). The two gas phase pipes (81) are connected to a gas phase main pipe (85), and the two liquid phase pipes (82) are connected to a liquid phase main pipe (86). The gas phase main pipe (85) and the liquid phase main pipe (86) are then connected to a gas supply main pipe (87). The gasifier (2) and the pressure regulator (3) are installed sequentially on the gas supply main pipe (87) along the material flow direction. The housing is equipped with a detection mechanism (6) for detecting pipeline temperature, pressure and leakage, and a valve mechanism (7) interlocked with the detection mechanism (6). The detection mechanism (6) and the valve mechanism (7) are both electrically connected to the control module (4), and the control module (4) is electrically connected to the monitoring display instrument (5).

2. The liquefied natural gas storage, gasification, and gas supply device as described in claim 1, characterized in that, The testing organization (6) includes: Temperature transmitter (61) is installed on the main gas supply pipeline (87) between the vaporizer (2) and the pressure regulator (3); Pressure transmitters (62) are installed on the main gas supply pipeline (87) after the pressure regulator (3) and on the main gas phase pipeline (85). A combustible gas detector assembled inside a housing for detecting natural gas leaks.

3. A liquefied natural gas storage, gasification, and gas supply device as described in claim 2, characterized in that, The valve mechanism (7) includes an emergency shut-off valve (71) mounted on the liquid phase main pipeline (86), which is interlocked with the temperature transmitter (61), the pressure transmitter (62) and the combustible gas detector.

4. A liquefied natural gas storage, gasification, and gas supply device as described in claim 1, characterized in that, The detection mechanism (6) further includes a level transmitter (63) for detecting the liquid level of the storage container (1), and the level transmitter (63) is electrically connected to the control module (4).

5. A liquefied natural gas storage, gasification, and gas supply device as described in claim 1, characterized in that, A switch detector is installed on the door of the enclosure. The switch detector is electrically connected to the control module (4). The control module (4) is connected to an alarm.

6. A liquefied natural gas storage, gasification, and gas supply device as described in claim 1, characterized in that, The control module (4) is connected to the terminal device via a wireless module.

7. A liquefied natural gas storage, gasification, and gas supply device as described in claim 1, characterized in that, The gas phase pipe (81) is inserted into the top of the storage container (1), and the liquid phase pipe (82) is inserted into the bottom of the storage container (1).

8. A liquefied natural gas storage, gasification, and gas supply device as described in claim 1, characterized in that, The vaporizer (2) and pressure regulator (3) are both electrically connected to the control module (4).

9. A liquefied natural gas storage, gasification, and gas supply device as described in claim 1, characterized in that, The monitoring and display instrument (5) is installed on the outer wall of the enclosure.

10. A liquefied natural gas storage, gasification, and gas supply device as described in claim 1, characterized in that, The storage container (1) is a Dewar flask or a cryogenic storage tank.

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