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Ultralow-temperature liquid pressurization unloading device and method

An unloading device, ultra-low temperature technology, applied in container filling method, container discharge method, gas/liquid distribution and storage, etc., can solve problems such as pump cavitation

Active Publication Date: 2021-03-26
陕西融科低温设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Pump pressurization and unloading due to the use of the unloading pump, the unloading speed can be increased after the unloading pump is running well, but due to the limitation of the physical properties of the ultra-low temperature liquid itself, it is easy to gasify and cause pump cavitation. The pump is fully pre-cooled

Method used

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  • Ultralow-temperature liquid pressurization unloading device and method
  • Ultralow-temperature liquid pressurization unloading device and method
  • Ultralow-temperature liquid pressurization unloading device and method

Examples

Experimental program
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Effect test

Embodiment 1

[0119] Such as Figure 1~2 As shown, this embodiment provides an ultra-low temperature liquid supercharged gas island unloading device, including a storage tank 20, and a supercharged gas island unit. The supercharged gas island unit includes a supercharger 13, a supercharger fluid inlet pipeline , the supercharger fluid outlet pipeline 15 and the tank car liquid phase interface 101 and the tank car gas phase interface 102 respectively connected to the tank car 1 containing the ultra-low temperature liquid to be unloaded;

[0120] The liquid phase interface 101 of the tanker is installed on the fluid inlet pipeline of the supercharger, and the end of the fluid inlet pipeline of the supercharger away from the liquid phase interface 101 of the tanker communicates with the inlet of the supercharger 13;

[0121] The tank car gas phase interface 102 is installed on the supercharger fluid outlet pipeline 15, and the end of the supercharger fluid outlet pipeline 15 away from the tank...

Embodiment 2

[0159] Such as image 3 As shown, this embodiment provides an ultra-low temperature liquid pressurized mutual backup unloading device, including a storage tank 20, and also includes a pressurized mutual backup unit, and the pressurized mutual backup unit includes a first supercharger 2213, a second supercharger 22132, first booster fluid inlet line, first booster fluid outlet line 2215, second booster fluid inlet line 22122, second booster fluid outlet line 22152, booster first line 131, The second pipeline 132 of the supercharger and the tank car liquid phase interface 101 and the tank car gas phase interface 102 respectively connected to the tank car 1 containing the ultra-low temperature liquid to be unloaded;

[0160] The tank car liquid phase interface 101 is installed on the first supercharger fluid inlet pipeline, and the end of the first supercharger fluid inlet pipeline far away from the tank car liquid phase interface 101 is connected to the inlet of the first superc...

Embodiment 3

[0199] Such as Figure 1~2 As shown, this embodiment provides a multi-unit supercharging mutual backup gas island unloading device, including a storage tank 20, and also includes a plurality of supercharging units and a supercharger first pipeline 131 arranged between the plurality of supercharging units and booster second line 132;

[0200] Each of the supercharging units includes a supercharging air island unit and a liquid supercharging unit;

[0201] Each of the supercharged air island units includes a supercharger 13, a supercharger fluid inlet pipeline, a supercharger fluid outlet pipeline 15 and a tank car liquid phase for connecting with the tank car 1 containing the ultra-low temperature liquid to be unloaded. Interface 101 and tank car gas phase interface 102;

[0202] Each tanker liquid phase interface 101 is installed on the corresponding supercharger fluid inlet pipeline, and the end of the supercharger fluid inlet pipeline away from the corresponding tanker liq...

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Abstract

The invention discloses an ultralow-temperature liquid pressurization unloading device and method, and particularly discloses an ultralow-temperature liquid pressurization gas island unloading deviceand method, an ultralow-temperature liquid pressurization mutual-standby unloading device, and a multi-unit pressurization mutual-standby gas island unloading device and method. The ultralow-temperature liquid pressurization gas island unloading device comprises a pressurization gas island unit composed of a pressurizer, a pressurizer fluid inlet pipeline, a pressurizer fluid outlet pipeline, a tank car liquid phase connector and a tank car gas phase connector, pressurization unloading is conducted on a tank car through the pressurization gas island unit, the pressure needed by tank car unloading can be rapidly achieved, the unloading time is saved, and energy saving and consumption reduction are achieved. According to the ultralow-temperature liquid pressurization mutual-standby unloadingdevice, pressurizers are shared or switched through a pressurization mutual-standby unit, the requirement for rapid replacement of the pressurizers needing to be maintained, deiced and the like can be met, and rapid unloading is achieved.

Description

technical field [0001] The invention belongs to the technical field of liquefied natural gas, and in particular relates to an ultra-low temperature liquid pressurized unloading device and method. Background technique [0002] Ultra-low temperature liquids such as liquefied natural gas (LNG) are one of the important energy sources in my country's energy supply. LNG is mostly transported by tank trucks. At present, the main way of unloading LNG tank trucks is pump booster unloading or self-pressurization unloading. [0003] Pump pressurization and unloading due to the use of the unloading pump, the unloading speed can be increased after the unloading pump is running well, but due to the limitation of the physical properties of the ultra-low temperature liquid itself, it is easy to gasify and cause pump cavitation. The pump is fully pre-cooled. The problem to be solved in pump pressurization and unloading is how to enable the unloading pump to quickly complete the pre-cooling,...

Claims

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Application Information

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IPC IPC(8): F17C7/04F17C13/00B60P3/22
CPCF17C7/04F17C13/00B60P3/2245F17C2221/033F17C2223/0161F17C2227/039F17C2227/0302
Inventor 王耀武杜利霞
Owner 陕西融科低温设备有限公司