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Hydraulic cutting nozzle with residue filer device

A technology of hydraulic slotting and nozzles, which can be used in safety devices, drilling with liquid/gas jets, gas discharge, etc. It can solve problems such as failure, no filter residue function, easy plugging and slotting construction, etc., so as to prevent hole plugging, The effect of increasing stability

Inactive Publication Date: 2010-11-10
SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a hydraulic slotting nozzle with a filter residue device, and solve the problem that the existing hydraulic slotting nozzle has no filter residue function, and is easy to block holes and cause the slotting construction to fail.

Method used

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  • Hydraulic cutting nozzle with residue filer device
  • Hydraulic cutting nozzle with residue filer device
  • Hydraulic cutting nozzle with residue filer device

Examples

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Embodiment Construction

[0013] Such as figure 1 , 2 As shown, a hydraulic slit nozzle with a filter residue device includes: a housing 1, a punching nozzle 4 located at the end of the housing, and a slit nozzle 7 located on the side of the housing; the housing 1 is externally arranged There is a two-stage filter tooth 2 hinged in the middle, the front end of the two-stage filter tooth 2 is hinged at the front end of the housing 1, and the rear end of the two-stage filter tooth 2 is connected to the housing 1 The external return spring 3 is hinged. After the two-stage filter teeth 2 are closed, a disposable plastic hoop 8 is provided at the slit nozzle 7; The front end of the movable core 5 is provided with a positioning shoulder 5-1 that can slide in the front chamber 1-1 of the housing to ensure that the movable core 5 will not move forward in the punching state; the rear end of the movable core 5 It is a spherical surface that can be in contact with the steel ball 6; a sealing ring 9 is installed...

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Abstract

The invention discloses a hydraulic cutting nozzle with a residue filer device, and relates to the technology that high-pressure water jet is adopted for cutting in a coal bed, which solves the problem that the existing hydraulic cutting nozzle without the function of filtering residues is easy to block a hole so as to cause the failed construction of cutting. The invention comprises a punching nozzle positioned on a tip of a shell, and a cutting nozzle positioned on the side of the shell, and is characterized in that: the external part of the shell is provided with a two-segment filter tooththe front part of which is hinged, the front end of the two-segment filter tooth is hinged on the front end of the shell, the back end of the two-segment filter tooth is hinged with a reset spring arranged on the external part of the shell, a position of the two-segment filter tooth after folding, is provided with a disposable plastic hoop, the inner cavity of the shell is provided with a movablecore which is matched with the inner cavity in a sliding way, the front end of the movable core is provided with a positioning convex shoulder which can slide in the front cavity of the shell, and the back end of the movable core is in a spherical surface contacted with steel ball. The invention is beneficial to the popularization and application of the high-pressure water jet cutting technology in the coal-mine gas drainage under suction.

Description

technical field [0001] The invention belongs to the technical field of coal bed gas extraction in mining engineering, and relates to a hydraulic slotting nozzle for slotting in coal seams by using high-pressure water jet technology. Background technique [0002] The permeability of the coal seam determines the gas drainage effect, and the permeability depends on the number of fissures in the coal seam. The coal seam with well-developed fissures must have a high gas drainage rate, which is crucial for reducing coal mine gas disasters. In the coal seam gas drainage technology, a technology widely used at present is to construct horizontal drilling in the coal seam, and then carry out gas drainage. This technology has an ideal gas drainage effect on coal seams with better permeability, but its application effect is not good on coal seams with poor permeability. New fractures are created in the coal seam, so the permeability of the coal seam is not improved. As we all know, mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B7/18E21F7/00
Inventor 吕兆兴王东飞冯增朝四旭飞康志勤秦清平赵阳升
Owner SHANXI LUAN ENVIRONMENTAL ENERGY DEV
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