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lng cryogenic storage tank and its fire extinguishing control system

A control system and low-temperature storage tank technology, applied in the field of control systems, can solve problems such as potential safety hazards, achieve the effects of saving input costs, facilitating operation and control, and ensuring safe use performance

Active Publication Date: 2019-08-23
ZHANGJIAGANG CIMC SANCTUM CRYOGENIC EQUIP +2
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

What's more, the fire source will lead the fire source to the interior of the storage tank along the local pressure relief and venting discharge pipeline, causing a huge safety hazard

Method used

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  • lng cryogenic storage tank and its fire extinguishing control system
  • lng cryogenic storage tank and its fire extinguishing control system
  • lng cryogenic storage tank and its fire extinguishing control system

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Embodiment Construction

[0033] Exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and drawings therein are essentially used for illustration rather than limitation this invention. see figure 1 and figure 2, according to the characteristics of the LNG cryogenic storage tank 1, the present embodiment proposes a fire extinguishing control system for the LNG cryogenic storage tank, which is applied to sense the fire source of the three vents of the LNG cryogenic storage tank 1, and spray fire extinguishing agent to extinguish the fire. source extinguished. The fire extinguishing control system of the LNG cryogenic storage tank in this embodiment includes: a sensing unit 2, a fire extinguishing equipment 3, a control unit 4, and a fi...

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Abstract

The invention provides an LNG low-temperature storage tank and a fire extinguishing control system thereof. The fire extinguishing control system of the LNG low-temperature storage tank comprises a sensing unit, a fire extinguishing device and a control unit, wherein the sensing unit is provided with multiple sets of sensing elements corresponding to vent ports in a one-to-one manner; each sensing element comprises a flame detector for sensing the flame of the corresponding vent port and a temperature detector for sensing the temperature of the corresponding vent port; the fire extinguishing device comprises a device body for providing fire extinguishing agents and a technical pipe network for conveying the fire extinguishing agents; the technical pipe network is provided with branches corresponding to the vent ports respectively; and each branch is provided with at least one control valve for switchover of the branch on-off state and a set of nozzles for spraying the fire extinguishing agents. According to the fire extinguishing control system of the LNG low-temperature storage tank, safety emission of the multiple vent ports of the single LNG low-temperature storage tank can be achieved through one fire extinguishing device, and the potential safety hazard that an external fire source ignites exhausted BOG at the vent ports is avoided accordingly.

Description

technical field [0001] The invention relates to a control system, in particular to a fire extinguishing control system of an LNG cryogenic storage tank. Background technique [0002] As a kind of clean energy, LNG industry in my country has developed rapidly with the continuous increase of national energy conservation and emission reduction efforts. However, due to a series of problems such as technology, the overall development of my country's LNG industry is slow and the technology lags behind. As a kind of storage and transportation equipment, LNG cryogenic storage tank has slow development of its own technology. When LNG is gasified into gas, its volume will expand rapidly. At 0°C and 101.325KPa, one liter of liquid can be vaporized into 625 liters of gas. In a closed container, the pressure rises due to volume expansion, which may easily lead to overpressure explosion of the container. In addition, the flammability of LNG puts forward higher requirements for the safe u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A62C37/00A62C3/06
Inventor 郭旭罗晓钟王荣华张琼孙娟王芳云
Owner ZHANGJIAGANG CIMC SANCTUM CRYOGENIC EQUIP
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