Drill rod heating device for rotary drilling rig in high and cold region and heating method of heating device

A technology of heating device and rotary drilling rig, applied in drilling equipment and methods, isolation device, drilling equipment and other directions, can solve problems such as affecting the construction of drilled piles and easy freezing of drill pipes.

Pending Publication Date: 2021-07-30
CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP NO 4 ENG
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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 solve the problem that when the rotary drilling rig is constructing mud retaining piles at minus 20°C in winter, the drill pipes are easily frozen during the construction process, which affects the construction of the bored piles, and a rotary drilling rig drill pipe for alpine regions is proposed Heating device and heating method thereof

Method used

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  • Drill rod heating device for rotary drilling rig in high and cold region and heating method of heating device

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Effect test

specific Embodiment approach 1

[0017] Specific implementation mode one: combine figure 1 Describe this embodiment, the drill pipe heating device of a rotary drilling rig in an alpine region described in this embodiment is used to heat the drill pipe 6 under construction; the heating device includes a handle nozzle 1, a connecting pipe 2, a steam engine 3 and a water tank 4;

[0018] The steam engine 3 is used to convert water into high-temperature steam, and the steam engine 3 is provided with a water inlet and a steam outlet; the water inlet of the steam engine 3 is connected with the water outlet of the water tank 4, and the water tank 4 is used for storing water; the steam outlet of the steam engine 3 It communicates with one end of the connecting pipe 2, and the other end of the connecting pipe 2 communicates with the air inlet of the handle nozzle 1; the air outlet of the handle nozzle 1 is close to the heating part of the drill pipe 6;

[0019] The handle spray head 1 is provided with a handle.

[0...

specific Embodiment approach 2

[0021] Embodiment 2: This embodiment further defines the drill rod heating device of a rotary drilling rig in an alpine region described in Embodiment 1. In this embodiment, the heating device also includes a pressure gauge 5;

[0022] The pressure gauge 5 is arranged on the steam engine 3 and is used for monitoring the pressure of the high-temperature steam ejected from the steam outlet of the steam engine 3 .

[0023] In this embodiment, by adding a pressure gauge 5, it is convenient to monitor the pressure of the high-temperature steam generated by the steam engine 3, so that it is convenient to control the speed of the high-temperature steam ejected from the steam outlet of the steam engine 3.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment is to further limit the drill pipe heating device of a rotary drilling rig in the alpine region described in Embodiment 1. In this embodiment, the connecting pipe 2 is a hose made of rubber .

[0025] In this embodiment, the connecting pipe 2 is a hose made of rubber, which is easy to bend and move, so as to adapt to different construction environments.

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Abstract

The invention discloses a drill rod heating device for a rotary drilling rig in a high and cold region and a heating method of the heating device, and relates to a drilling technology of the rotary drilling rig in the high and cold region. The invention aims to solve the problems that when the rotary drilling rig constructs a slurry wall pile at the temperature of minus 20 DEG C in winter, a drill rod is prone to being frozen in the construction process, and the construction of a drilled pile is affected. The device is used for heating the drill rod in construction, and a steam engine is used for converting water into high-temperature steam; a water inlet of the steam engine communicates with a water outlet of the water tank used for storing water; a steam outlet of the steam engine communicates with one end of a connecting pipe, and the other end of the connecting pipe communicates with an air inlet of a grip nozzle; an air outlet of the grip nozzle is close to a heating part of the drill rod; and the grip nozzle is provided with a handheld part. The heating device has the beneficial effects that the working continuity of the rotary drilling rig is better guaranteed, and the construction quality of the slurry wall pile is guaranteed.

Description

technical field [0001] The invention relates to a drilling technology of a rotary drilling rig in an alpine region. Background technique [0002] Rotary drilling rig is a construction machine suitable for hole-forming operations in building foundation engineering. It is mainly suitable for the construction of sandy soil, cohesive soil, silty soil and other soil layers. It is widely used in various foundation constructions such as cast-in-place piles, diaphragm walls, and foundation reinforcement. The rated power of rotary drilling rigs is generally 125-450kW. The output torque is 120-400kN m, the maximum hole diameter can reach 1.5-4m, and the maximum hole depth is 60-90m, which can meet the requirements of various large-scale foundation construction. It is mainly used in basic constructions such as municipal construction, highway bridges, industrial and civil buildings, underground diaphragm walls, water conservancy, seepage protection and slope protection. [0003] The r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B36/00
CPCE21B7/00E21B36/00
Inventor 刘颂春常亮苏艳友李元涛唐小军程为张琪尤春颖王雷
Owner CHINA RAILWAY CONSTR BRIDGE ENG BUREAU GRP NO 4 ENG
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