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Full-automatic while drilling gas content quick determination device

A technology for rapid determination of gas content, applied in sampling devices, analytical materials, instruments, etc., can solve the problems of large gas loss and long coal sample leakage time, and achieve the effect of reducing intervention, shortening measurement time, and improving accuracy

Inactive Publication Date: 2018-11-27
CHINA COAL TECH ENG GRP CHONGQING RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a fully automatic rapid gas content measurement device while drilling to solve the problems of long coal sample exposure time and large gas loss in the existing coal seam gas content measurement process

Method used

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  • Full-automatic while drilling gas content quick determination device
  • Full-automatic while drilling gas content quick determination device

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Embodiment Construction

[0020] Such as figure 1 The full-automatic gas content rapid determination device while drilling shown includes sampling device, measuring device and connecting pipes; each component is described in detail below:

[0021] The sampling device includes a double-arm drill rod 2 fixed on the frame by a holder 3, a sampling drill bit 1 arranged at the front end of the double-arm drill rod 2 and a drill tail 8 arranged at the tail of the double-arm drill rod 2 The double-arm drill rod 2 is driven by the drilling rig 6, the double-arm drill rod 2 is provided with a main channel A, and the wall of the double-arm drill rod 2 is provided with an annular space B communicating with the main channel A, and the drill tail 8 is provided with an air pressure stabilizing device. The air pressure stabilizing device includes a pressure stabilizing pipeline connected to the drill tail 8, a pressure gauge A5 is provided on the pressure stabilizing pipeline, and an opening adjustable ball valve is...

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Abstract

The invention discloses a full-automatic while drilling gas content quick determination device which comprises a sampling device, a measuring device and a connecting pipeline. The sampling device comprises a double-arm drill pipe, a sampling drill bit arranged at the front end of the double-arm drill pipe and a drill tail arranged on the tail of the double-arm drill pipe; a main channel is arranged in the double-arm drill pipe, an annular space communicating to the main channel is formed in the wall of the double-arm drill pipe, and an air pressure stabilizing device is arranged on the drill tail; the measuring device comprises a measuring host and a measuring barrel; a pressure gauge B for measuring pressure in the measuring barrel and communicating to the measuring host is mounted on themeasuring barrel; a coal sample cup is arranged in the measuring barrel, one end of the connecting pipeline communicates with the tail of the drill tail while the other end is placed above the coal sample cup to convey coal samples to the coal sample cup. By integrally designing the sampling device and the measuring device, the leak time of the coal samples in air and the loss of gas in the coalsamples are reduced, so that the predicting accuracy of the gas content in the coal samples is improved greatly.

Description

technical field [0001] The invention relates to a full-automatic quick measuring device for gas content while drilling. Background technique [0002] Coal and gas outburst is an abnormal dynamic phenomenon in which broken coal, rock and gas are suddenly thrown from the coal body or rock body to the mining space under the joint action of in-situ stress and gas. Natural disasters seriously threaten the safe production of coal mines and are extremely destructive. [0003] Scientific and accurate coal and gas outburst prediction is the premise and key to guide the reasonable and effective implementation of coal and gas outburst prevention and control measures. Therefore, coal and gas outburst prediction has great practical significance. Coal seam gas content is one of the key indicators of coal and gas outburst, and it has been widely used in predicting the risk of coal and gas outburst in recent years. [0004] The core of coal seam gas content prediction for coal and gas out...

Claims

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Application Information

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IPC IPC(8): G01N7/00G01N1/08
CPCG01N1/08G01N7/00
Inventor 隆清明陈德敏任文贤张宪尚李柏均唐勇岳建平常宇周瑾萱邱飞饶家龙周燕刘娟杨娟江旭张森林曹利波胡波
Owner CHINA COAL TECH ENG GRP CHONGQING RES INST
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