Liquefied gas storage tank liquid level meter pipeline ice blockage prevention device

A technology of liquefied gas and liquid level gauge, which is applied in the installation device of container structure, gas/liquid distribution and storage, method of container discharge, etc., to achieve the effect of reducing impact, preventing ice blockage and simple operation.

Inactive Publication Date: 2018-12-11
SHANGHAI MICROPOWERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a device for preventing and controlling the ice blockage of the liquid level gauge pipeline of the liquefied gas storage tank, which can effectively solve the problem of ice blockage used for measuring the liquid level gauge pipeline of the low-temperature liquefied gas storage tank, and improve the quality of the low-temperature liquefied gas storage tank. The use of storage tanks is safe, the system is simple, and the cost is low

Method used

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  • Liquefied gas storage tank liquid level meter pipeline ice blockage prevention device
  • Liquefied gas storage tank liquid level meter pipeline ice blockage prevention device
  • Liquefied gas storage tank liquid level meter pipeline ice blockage prevention device

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Embodiment 1

[0024] This specific embodiment discloses a method for preventing local ice blockage of a liquid level gauge, wherein the liquid level gauge is used to measure the liquid level of a low-temperature liquefied gas storage tank, and one end of the liquid level gauge is connected to the gas phase pipe A, and the other end is connected to the liquid phase pipe 1 Unicom, the method to prevent the ice blockage of the liquid level gauge is to locally heat the liquid phase pipe 1 of the liquid level gauge.

[0025] Specifically, the part of the local heating is the position where the liquid phase pipe 1 of the liquid level gauge is prone to ice blockage, and the position where the liquid phase pipe 1 is prone to ice blockage is the position where the liquid phase pipe 1 is close to the inner tank B1 of the low-temperature liquefied gas storage tank B Straight pipe position.

[0026] Specifically, local electric heating is performed on the liquid phase pipe 1 of the liquid level gauge. ...

Embodiment 2

[0029] The method for preventing local ice blockage of the liquid level gauge disclosed in the second embodiment is basically the same as that in the first embodiment, except that the heating methods in the two embodiments are different. In this embodiment, the liquid phase pipe 1 of the liquid level gauge is locally heated by the heat exchange medium.

[0030] Specifically, a casing is sleeved outside a local area of ​​the liquid phase tube 1 of the liquid level gauge, and a cavity is formed between the sleeve tube and the liquid phase tube 1 of the liquid level gauge, and an inlet connecting pipe is provided at both ends of the cavity 22 and an outlet connecting pipe 23, the inlet connecting pipe 22 is used to introduce the heat exchange medium into the cavity, and the outlet connecting pipe 23 is used to export the heat exchange medium in the cavity. In this embodiment, the heat exchange medium may be gas and / or liquid.

[0031] By controlling the flow rate and temperature...

Embodiment 3

[0034] The method for preventing local ice blockage of the liquid level gauge disclosed in the third embodiment is basically the same as that in the second embodiment, both of which are heated by the heat exchange medium, and the difference is that the heating device 2 in the two embodiments different.

[0035] Specifically, in this embodiment, a spiral tube is arranged outside the liquid phase tube 1 of the liquid level gauge, and the spiral tube is wound around a local area of ​​the liquid phase tube 1 of the liquid level gauge, and the spiral tube is used for passing the heat exchange medium.

[0036] Compared with the second embodiment, the heating medium in this embodiment is not in direct contact with the liquid phase pipe 1 of the liquid level gauge, so that the setting can avoid the corrosion of the liquid phase pipe by the heating medium.

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PUM

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Abstract

The invention discloses a liquefied gas storage tank liquid level meter pipeline ice blockage prevention device. The liquefied gas storage tank liquid level meter pipeline ice blockage prevention device comprises a heating device and a control system; the heating device is arranged on a liquid phase pipeline of a liquid level meter and used for partially heating the liquid phase pipeline, and theheating device is arranged in the position of a straight pipeline section, close to an inner tank of a low-temperature liquefied gas storage tank, of the liquid phase pipeline of the liquid level meter; and the control system is used for controlling the heating time and the heating temperature. According to the liquefied gas storage tank liquid level meter pipeline ice blockage prevention device,the ice blockage problem of the pipeline of the liquid level meter can be effectively solved, the using safety of the low-temperature liquefied gas storage tank is improved, and the liquefied gas storage tank liquid level meter pipeline ice blockage prevention device is simple in structure, low in cost and capable of being widely applied to the field of liquid level measurement of low-temperatureliquefied gas storage tanks.

Description

technical field [0001] The invention relates to the field of liquid level measurement of low-temperature liquefied gas storage tanks, in particular to a device for preventing local ice blockage of liquid level meter pipelines. Background technique [0002] Cryogenic liquefied gas (such as LNG (liquefied natural gas, liquefied natural gas), liquid nitrogen, liquid oxygen, liquid argon and liquefied CO 2 etc.) are widely used in chemical industry, metallurgy, medicine, aerospace and other industries. Cryogenic liquefied gases are usually highly dangerous, and when they come into contact with human skin and eyes, they can cause frostbite (cold burn). When a low-temperature liquid is vaporized into a gas, the volume will expand rapidly, which will easily cause the danger of overpressure in a closed container. In addition, some liquefied gases are also flammable, explosive and toxic. [0003] In view of the high danger of low-temperature liquefied gas, the liquid level gauge, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C13/02F17C13/10
CPCF17C13/021F17C13/10F17C2205/03
Inventor 冯慧华周飞鸽黄欢明门启明邵雪峰杜柯江李延铭
Owner SHANGHAI MICROPOWERS
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