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Coal mine drilling blowout preventer

A blowout prevention device and blowout prevention technology are applied in the field of devices for preventing water or gas in the coal seam from blowing out by drilling in underground coal mines. Reasonable, strong acid and alkali resistance, long service life

Inactive Publication Date: 2013-12-04
解波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the function of the currently used blowout preventer is too simple. Only a rubber ring is wrapped around the drill pipe, which can prevent part of the water from spraying out of the hole, but once the water pressure is too high, it will conflict with the seal of the rubber ring. The spray effect is not ideal

Method used

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  • Coal mine drilling blowout preventer
  • Coal mine drilling blowout preventer
  • Coal mine drilling blowout preventer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Such as figure 1 The blowout prevention device for coal mine drilling shown includes an orifice casing 1, the top of the orifice casing 1 is fixedly connected with a blowout prevention ram 5 through a flange 2, and the two ends of the blowout prevention ram 5 pass through a screw rod 3 Two symmetrical wheels 4 are connected, and the outer periphery of the blowout ram 5 is provided with a sealing ring 8; the upper end of the blowout ram 5 is provided with a blowout pad 6, and above the blowout pad 6 is provided with a fastening pad 6 Gland7.

[0028]

Embodiment 2

[0030] Such as figure 2 The blowout prevention device for coal mine drilling shown includes an orifice casing, and two discharge pipes 9 are symmetrically arranged on both sides of the orifice casing, and a valve 10 is provided on the discharge pipe 9, and a blowout prevention pad 6 is provided at the upper end of the discharge pipe 9 , The top of the blowout-proof pad 6 is provided with the gland 7 for fastening the blowout-proof pad 6, and the device is fixed at the orifice through the flange 2' for gas or water blowout prevention.

[0031]

Embodiment 3

[0033] Such as image 3 The blowout prevention device for coal mine drilling shown includes an orifice casing 1, the top of the orifice casing 1 is fixedly connected with a blowout prevention ram 5 through a flange 2, and the two ends of the blowout prevention ram 5 pass through a screw rod 3 Two symmetrical wheels 4 are connected, and a sealing ring 8 is provided on the outer periphery of the blowout ram 5; two symmetrical drain pipes 9 are arranged on the upper end of the blowout ram 5, and a valve 10 is arranged on the drain pipe 9, and the drain pipe 9 It is fixedly connected with the blowout ram 5 through the flange 2', the upper end of the discharge pipe 9 is provided with a blowout pad 6, and the top of the blowout pad 6 is provided with a gland 7 for fastening the blowout pad 6.

[0034] The present invention has two upper and lower blowout prevention facilities, the first one is the gate-to-card type blowout prevention, and the second one is the pressure relief blocki...

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Abstract

The invention provides a coal mine drilling blowout preventer comprising an orifice casing. A blowout preventing shutter is fixedly connected to the top of the orifice casing through flanges, and each of two ends of the blowout preventing shutter is connected with a wheel disc through a lead screw. The coal mine drilling blowout preventer is reasonable in structure, small in size, high in strength and high in safe reliability. By the adoption of two blowout preventing facilities, sealing property and blowout preventing effect are good, and sudden blowout of water or gas coal dusts can be prevented. The coal mine drilling blowout preventer using the flanges for connection is simple to operate and convenient to demount and maintain, and the upper and lower two blowout preventing facilities can be detached and used individually.

Description

technical field [0001] The invention relates to the technical field of coal mining, in particular to a device for preventing water or gas from being ejected in coal seams by drilling underground holes in coal mines. [0002] Background technique [0003] In the process of coal mining, due to the complex geology, some coal seams contain a large amount of gas or water, which affects the normal mining of the coal mine. Therefore, it is necessary to drill holes to extract gas or discharge water before coal mining. When the drilling rig is drilling underground in a coal mine, when it encounters a coal seam containing gas, the gas is flammable and explosive gas, which will spray out from the drilling hole, which poses a major threat to the safety of coal mine production; In large coal seams, a large amount of water or coal slurry will be sprayed from the orifice, which will deteriorate the working environment and pose a certain threat to the personal safety of construction worker...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06
Inventor 解波
Owner 解波
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