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Hole opening tool under pressure and hole opening process

A technology of opening and tooling with pressure, applied in metal processing and other directions, can solve problems such as affecting the working accuracy, no special device for handling PE pipe residual material, damage to PE pipe, etc., to increase practicability and safety, Improves usability and stability, and facilitates disassembly and installation

Active Publication Date: 2019-04-09
HENAN ZHONGTUO PIPELINE ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the pressurized hole opening tool of the prior art judges whether the hole cutting has been completed by whether the hand wheel can be rotated and feeds the knife, which will cause the hole hole tool to cut the top wall layer of the PE pipe to be holed quickly. Sliding down to the bottom wall layer of the PE pipe to be drilled, causing damage to the PE pipe, and even dislocation of the drilling position due to rebound, which affects the accuracy of the work, and the punching tool in the prior art does not specifically handle the cut PE pipe For the device of the remaining material, the staff need to pry out the remaining material directly from the side of the knife edge, which poses a safety hazard
Moreover, the opening process is complicated and unsafe

Method used

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  • Hole opening tool under pressure and hole opening process
  • Hole opening tool under pressure and hole opening process
  • Hole opening tool under pressure and hole opening process

Examples

Experimental program
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Effect test

Embodiment Construction

[0040] like figure 1 Shown is a structural schematic diagram of a pressure drilling tool, which includes a casing 1, a sealing chamber 2, a motor 3 and a transmission box 4, the bottom of the casing 1 is provided with a sealing chamber 2, and the transmission box 4 There is a motor 3 for powering it, the top of the protective shell 1 is provided with a hand wheel 5, and the tool shaft 14 is fixedly installed under the hand wheel 5, and a switch is fixedly connected to the bottom of the tool shaft 14. The hole cutter 12 and the tool shaft 14 are arranged in the protective shell 1 through a sliding bearing. In order to facilitate the staff to calculate the cutting depth, a scale tube 6 is arranged below the hand wheel 5, and the outside of the tool shaft 14 is sleeved There is a scale tube 6, the outer surface of the scale tube 6 is provided with a scale line 7, the scale tube 6 is fixedly connected with the tool shaft 14 through a bearing, the scale tube 6 is located below the ...

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PUM

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Abstract

The invention belongs to the technical field of pipeline hole opening under pressure, in particular to a hole opening tool under pressure and a hole opening process for a composite pipeline with a PE(polyethylene) lining pipe. A PE pipe fitting with a pre-buried electric heating wire, a PE saddle and a PE flange is used in the hole opening process. The construction process is characterized in that a branch line hole opening method that holeopening is required to be connected with a branch line without stopping and disconnecting the main pipeline after the pipeline is repaired by using the PElining pipe is adopted, a part of the old pipeline is removed at the hole opening position, the prefabricatedPE pipe fitting with the pre-buried electric heating wire, the PE saddle and the PE flangeis welded to the hole opening position of the PE lining pipe in an electric melting mode, a pipe hoop is installed to sleeve the PE pipe fitting and the exposed part of the PE lining pipe at the old pipeline removal part, a branch line valve is installed, the hole opening tool under pressure is installed, the branch line valve is closed after the hole opening operation under pressure is finished,and the hole opening tool under pressure is disassembled. The newly-added branch line hole opening of the composite pipeline with the PE lining pipe is realized through a non-stop conveying hole opening mode under pressure.

Description

technical field [0001] The invention belongs to the technical field of pipe under-pressure drilling, in particular to a under-pressure drilling tool and a drilling process for a composite pipe with a PE inner lining pipe. Background technique [0002] Drilling under pressure is a safe, environmentally friendly, economical and efficient pipeline maintenance and emergency repair technology in service. rush repairs under pressure, replacement of corroded pipe sections, installation of devices, distribution and transformation, etc.), pressure vessels and industrial pipelines state expressly stipulate that when there is internal pressure, no maintenance shall be carried out. For special production processes, it is necessary to tighten with temperate belt pressure When bolts are used, or when an emergency leak occurs and needs to be sealed under pressure, the user shall put forward effective operation requirements and protective measures in accordance with the design regulations, ...

Claims

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Application Information

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IPC IPC(8): B26F1/00B26F1/16B26F1/32B26D7/02B26D7/22B26D7/28
CPCB26D7/02B26D7/22B26D7/28B26D2007/013B26F1/0015B26F1/16B26F1/32
Inventor 葛延超张严甫杨鹏
Owner HENAN ZHONGTUO PIPELINE ENG
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