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How to choose the right tunnel drilling rig?
Release time:
2018-09-26
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The so-called tunnel drilling rig is driven by the engine hydraulic oil pump, and finally the tunnel drilling rig has the functions of drilling and rotating, so as to realize the purpose of pipeline trenchless construction. Then, in the process of using horizontal drilling rig to complete the project, which characteristic of the drilling rig has the greatest impact on the project? There is generally a vague concept: when selecting tunnel drilling rigs, tension is the main data, and other data are easy to be ignored. the correct principle should be: first look at whether the tension value of the drilling rig is within the required range, and the output torque of the drilling rig and the parameters of the drill pipe are the key data. of course, these capabilities of the drilling rig are started by the heart of the drilling rig.
The so-called tunnel drilling rig is driven by the engine hydraulic oil pump, and finally the tunnel drilling rig has the functions of drilling and rotating, so as to realize the purpose of pipeline trenchless construction. Then, in the process of using horizontal drilling rig to complete the project, which characteristic of the drilling rig has the greatest impact on the project?
There is generally a vague concept: when selecting a tunnel drilling rig, the main data is tension, and other data are easily ignored. The correct principle should be: first look at whether the tension value of the drilling rig is within the required range, and the output torque of the drilling rig and the parameters of the drill pipe are the key data. Of course, these capabilities of the drilling rig are determined by the engine, the heart of the drilling rig. Therefore, it also depends on the size of the engine power, which determines whether the rig can output continuous power for a long time.
Therefore, when selecting a drilling rig, it is recommended to consider these five aspects in turn: A engine power, B torque, C drill pipe size, D drilling rig pushing and pulling force, E manufacturer or sales company's technical service level and scope.
Here are some necessary explanations for the engine power of the drilling rig:
Strong power is the basis of drilling equipment-the key parameter is the continuous output power of the engine
Since the directional drilling machine works continuously, when selecting the drilling machine, when the nominal parameters of the drilling machine are the same, it depends on which type of engine has a larger continuous output power, rather than the maximum intermittent output power or total power. Only in this way can the drilling machine overcome the resistance in construction with a constant load capacity for a long time, especially in the complex formation or rock-bearing formations of the project is more important, so that only a strong power output to ensure that the project is smooth and drilling rig good work, while extending the life of the entire rig, it is important to point out here: the power of the engine to determine the actual ability of the rig to output tension and torque.
We can also see from the parameter tables of various drilling rigs that the output tension and torque of the drilling rig are in a certain proportion. The key is that the proportion of these two parameters should be appropriate. It also depends on the driving mode and structure of the drilling rig. The driving structure determines the power of the drilling rig to be converted into the output capacity and output efficiency of the drilling rig. The power of the mud pump of some small drilling rigs also needs to be provided by the same engine, the mud pump of a large drilling rig generally has an independent power source, so when choosing a drilling rig, we should also pay attention to the power source of the mud pump. If it is also driven by an engine, we should also consider the matching and distribution ratio of this part of the power.
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