Conveying device and conveying method of liquid carbon dioxide for ground drilling fire extinguishing

A technology of liquid carbon dioxide and gaseous carbon dioxide, applied in fire rescue, gas/liquid distribution and storage, pipeline support, etc., can solve the problems of transporting fire extinguishing materials to fire extinguishing areas, so as to avoid drilling collapse, realize clamping positioning, Design novel and reasonable effect

Inactive Publication Date: 2018-07-17
XIAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The delivery device can realize the direct delivery of liquid carbon dioxide and ensure the sufficient supply of liquid carbon dioxide when extinguishing fires in underground fire areas. Liquid carbon dioxide is transported to the underground fire area for fire extinguishing

Method used

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  • Conveying device and conveying method of liquid carbon dioxide for ground drilling fire extinguishing
  • Conveying device and conveying method of liquid carbon dioxide for ground drilling fire extinguishing
  • Conveying device and conveying method of liquid carbon dioxide for ground drilling fire extinguishing

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Embodiment Construction

[0044] Such as figure 1 The conveying device for liquid carbon dioxide used for ground drilling fire extinguishing shown includes a gaseous carbon dioxide storage tank 1, a liquid carbon dioxide storage tank 4 and a delivery pipe 12, and the delivery pipe 12 is arranged in a borehole 16 extending downward from the ground 15 Inside, the borehole 16 is located directly above the downhole fire area 18, and the upper end of the delivery pipe 12 is provided with a pressure stabilizing valve 8 for supplying gas or liquid with a pressure higher than 1.6MPa-2MPa into the delivery pipe 12, The lower end of the conveying pipe 12 is provided with a pressure control valve 17 for releasing the gas or liquid in the pipe when the pressure in the pipe is greater than 2MPa-2.5MPa, and the conveying pipe 12 is provided with a pressure control valve for observing the pressure in the pipe. Pressure gauge 9, the upper end of the delivery pipe 12 communicates with the gaseous carbon dioxide storage...

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Abstract

The invention discloses a delivery device for liquid carbon dioxide used for ground drilling fire extinguishing, which comprises a gaseous carbon dioxide storage tank, a liquid carbon dioxide storage tank and a delivery pipe. Pressure valve, the lower end of the delivery pipe is provided with a pressure control valve, the delivery pipe is provided with a pressure gauge, the upper end of the delivery pipe is connected with the gaseous carbon dioxide storage tank through the first connecting pipe, and the upper end of the delivery pipe is connected with the liquid carbon dioxide storage tank through the second connecting pipe. The delivery device can realize the direct delivery of liquid carbon dioxide. The invention also discloses a method for transporting liquid carbon dioxide, which includes the following steps: drilling holes from top to bottom on the ground directly above the underground fire zone; installing a delivery pipe; connecting the delivery pipe with the gaseous carbon dioxide storage tank and the liquid carbon dioxide storage tank Connect; inject gaseous carbon dioxide into the delivery pipe to boost the pressure; inject liquid carbon dioxide into the delivery pipe to extinguish the fire. The delivery method is simple and effective.

Description

technical field [0001] The invention belongs to the technical field of liquid carbon dioxide transportation, and in particular relates to a liquid carbon dioxide transportation device and a transportation method for ground drilling fire extinguishing. Background technique [0002] my country's coal spontaneous combustion fire is very serious. After a fire occurs in an underground coal mine, due to the complexity of the underground environment, if the fire cannot be extinguished directly from the underground, it is necessary to evacuate to the ground and directly drill vertically into the fire area, and take measures to control and control the fire area through the ground drilling. Among the existing coal mine fire extinguishing technology methods, the liquid carbon dioxide method shows great advantages in the control of mine fire areas because it can realize rapid cooling through vaporization on the basis of inertization. If the temperature is too low or the pressure is too...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F17D1/08F17D1/14A62C31/00A62C31/28F16L3/10
CPCA62C31/00A62C31/28F16L3/1016F17D1/082F17D1/14
Inventor 翟小伟王凯邓军于志金张嬿妮王彩萍
Owner XIAN UNIV OF SCI & TECH
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