Hydraulic grouting and pressure water test plug for drainage and relief in high pressure borehole

A technology for drainage pressure relief and water pressure test, which is applied to measuring devices, instruments, scientific instruments, etc., can solve the problems of embolizing capsules that cannot be repeatedly filled with drainage and pressure relief, incomplete and other problems, and achieves good promotion and application prospects and strong formation adaptability. , The effect of easy and safe operation

Pending Publication Date: 2018-03-23
CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides a water pressure grouting and pressure water test embolism for drainage and pressure relief in a high-pressure hole to solve the problems that the embolism capsule cannot be repeatedly filled in the hole and the drainage and pressure relief are not complete

Method used

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  • Hydraulic grouting and pressure water test plug for drainage and relief in high pressure borehole
  • Hydraulic grouting and pressure water test plug for drainage and relief in high pressure borehole
  • Hydraulic grouting and pressure water test plug for drainage and relief in high pressure borehole

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Embodiment Construction

[0022] The eccentric reducing handle 1 is threadedly connected with the drainage pressure relief mechanism 4, the high-pressure filling pipe 3 is threaded with the drainage pressure relief mechanism 4 and sealed with an O-ring, and the embolism capsule 5 is threaded with the drainage pressure relief mechanism 4 and is sealed with an O-shaped sealing ring. The sealing ring is sealed, the upper end of the core tube 6 is threadedly connected with the drainage pressure relief mechanism 4 and sealed with an O-ring, the lower end of the core tube 6 is slidably connected with the lower end of the embolism capsule 5 and sealed with an O-ring, and the high-pressure grouting pipe 2 is connected with the drain The pressure relief mechanism 4 is fixedly connected and runs through the eccentric reducer 1 and the core tube 6 .

[0023] The structure of the drainage pressure relief mechanism 4 is: a balance spring 403 is installed in the eccentric hole of the distribution valve body 404, the ...

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Abstract

The invention relates to a hydraulic grouting and pressure water test plug for drainage and relief in a high pressure borehole and belongs to borehole segmental isolating devices in the fields of grouting, pressure water test and the like. An eccentric reducing coupling is in threaded connection with a drainage and relief mechanism, a high pressure plugging tube is in threaded connection with thedrainage and relief mechanism, a plug capsule is in threaded connection with the drainage and relief mechanism, the upper end of a core tube is in threaded connection with the drainage and relief mechanism, the lower end of the core tube is in slidable connection with the lower end of the plug capsule, and a high pressure grouting tube is fixedly connected with the drainage and relief mechanism and is passed through the eccentric reducing coupling and the core tube. Repeated plugging of the plug capsule in a borehole and thorough drainage and relief actions are reliably achieved by using the pressure differential balance principle, full verification is acquired from engineering practice, and the hydraulic grouting and pressure water test plug for drainage and relief in the high pressure borehole is highly adaptive to formations and has a promising popularization and application prospect in the fields of grouting, pressure water test, splitting test, mine field gas drainage and the like.

Description

technical field [0001] The invention belongs to the field of grouting and pressure water test and other field of segmental isolation equipment in holes. Background technique [0002] 1. The status quo of my country's grouting (pressurized water) industry [0003] Grouting can be divided into orifice grouting and segmental grouting. The orifice sealing method is mostly used in the grouting industry in my country for orifice grouting. Due to its own limitations, this process is generally only suitable for low-pressure grouting in shallow holes within 15m, and the efficiency is low. . [0004] Segmental grouting and water pressure test are inseparable from embolism, and embolism is a key tool for segmental isolation of boreholes. Common grouting (water pressure test) plugs in China include mechanical top pressure type, air pressure type and ordinary water pressure type. The rubber plug of the mechanical top pressure plug has limited expansibility and is suitable for complete ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/02
CPCG01N3/02
Inventor 田伟庄景春王志学杨晓晗纪恒魁刘秀宝路殿中田野盛春海门树林杨海鑫杨雪王大放张烁
Owner CHINA WATER NORTHEASTERN INVESTIGATION DESIGN & RES
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