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Mineral liquid carbon dioxide conveying device and leakage monitoring method thereof

A technology of liquid carbon dioxide and gaseous carbon dioxide, which is used in safety devices, mining equipment, earth-moving drilling, etc.

Inactive Publication Date: 2017-09-29
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, there is no real-time monitoring system for long-distance pipeline transportation of liquid carbon dioxide in the prior art

Method used

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  • Mineral liquid carbon dioxide conveying device and leakage monitoring method thereof
  • Mineral liquid carbon dioxide conveying device and leakage monitoring method thereof
  • Mineral liquid carbon dioxide conveying device and leakage monitoring method thereof

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Embodiment Construction

[0050] Such as figure 1 and figure 2 A mine liquid carbon dioxide delivery device shown includes a first gaseous carbon dioxide storage tank 1, a second gaseous carbon dioxide storage tank 2 and a liquid carbon dioxide storage tank 3 and is used to enter the mine body from a vertical shaft, an adit or an inclined shaft and extend The pipeline device 16 to the underground fire area, the pipeline device 16 includes an outer pipe 16-1 and an inner pipe 16-2 arranged inside the outer pipe 16-1, and the outer pipe 16-1 is located outside the mine One end communicates with the first gaseous carbon dioxide storage tank 1, the end of the outer tube 16-1 located inside the mine is closed, and the end of the inner tube 16-2 located outside the mine is connected to the second gaseous carbon dioxide storage tank 2 and liquid carbon dioxide The storage tank 3 is connected, and the end of the inner pipe 16-2 located outside the mine body is provided with a pressure stabilizing valve 13 fo...

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Abstract

The invention discloses a mining liquid carbon dioxide delivery device, which comprises a pipeline device, the pipeline device includes an outer tube and an inner tube, one end of the outer tube is connected with a first gaseous carbon dioxide storage tank, and one end of the inner tube is connected with a second gaseous carbon dioxide storage tank and The liquid carbon dioxide storage tank is connected, one end of the inner pipe is provided with a pressure stabilizing valve, and the other end of the inner pipe is provided with a pressure control valve, and the conveying device also includes a monitoring system. The delivery device can improve the reliability of delivery of liquid carbon dioxide and avoid safety accidents. The invention also discloses a leakage monitoring method of a mine-used liquid carbon dioxide delivery device. The monitoring method uses two pressure transmitters to monitor the pressure change inside the outer pipe. When the inner pipe leaks, both pressure transmitters will monitor When the abnormal signal of pressure increase is detected, the controller obtains the above abnormal signal, and calculates the specific location of the leakage point according to the time of obtaining the above abnormal signal. This monitoring method is simple, convenient and effective.

Description

technical field [0001] The invention belongs to the technical field of mine liquid carbon dioxide transport, and in particular relates to a mine liquid carbon dioxide transport device and a leakage monitoring method thereof. Background technique [0002] Among the existing coal mine fire prevention technology methods, the liquid carbon dioxide method can realize rapid cooling on the basis of inertization, and the liquid carbon dioxide injected into the fire area will instantly vaporize, expand in volume, flow and diffuse, absorb a large amount of heat, and make the temperature of the fire area And the rapid reduction of oxygen concentration shows great advantages in the management of mine fire areas. Since the phase state of carbon dioxide is related to pressure and temperature, if the temperature is too low or the pressure is too high, dry ice will form, and during long-distance pipeline transportation, pipe blockage, pipeline breakage and damage will lead to leakage of liq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/08F17D5/02F17D1/14F17D1/02F17D3/01E21F5/00
CPCF17D1/082E21F5/00F17D1/02F17D1/14F17D3/01F17D5/02
Inventor 王凯翟小伟邓军徐宇王伟峰
Owner XIAN UNIV OF SCI & TECH
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