Coal bed gas drainage and gas recovery device

Abstract

The invention discloses a coal bed gas drainage and gas recovery device, which can greatly improve the efficiency of water pumping, ensure the reliable operation of a water pump, and when the water ispumped in a prior mode, too low water level can cause damage to the water pump, and meanwhile, the water in an extraction hole can be extracted neatly, that the extraction hole is in a state of no water or low water level is always guaranteed to ensure the effect and efficiency air exhaust. According to the invention, when the drainage is performed, the water is collected into a secondary water storage barrel by using a rotary lifting mode, and then the water in the secondary water storage barrel is collected to a primary water storage barrel, so that the drainage is performed through a drainage pump, while the drainage efficiency is improved, the operation time of the drainage pump with large power is reduced, the reliability is ensured, and meanwhile, the drainage efficiency and drainage degree in the extraction hole can be ensured.

Description

technical field [0001] The invention relates to a coalbed methane drainage and gas recovery device, and belongs to the technical field of coalbed methane gas recovery and drainage equipment. Background technique [0002] As the international energy situation is tightening, as a high-quality, efficient and clean energy, the prospect of large-scale development and utilization of coalbed methane is attractive. The development and utilization of coalbed methane also has multiple effects: improving the level of gas accident prevention, which has a safety effect; effectively reducing greenhouse gas emissions, resulting in a good environmental effect; as an efficient and clean energy source, generating huge economic benefits. If coalbed methane is utilized, it can be used as fuel for power generation, industrial fuel and residential fuel; it can also be liquefied into automobile fuel, and can also be widely used in the production of synthetic ammonia, formaldehyde, methanol, carbon...

AI Technical Summary

Problems solved by technology

[0003] For the mining of coalbed methane, due to the phenomenon of water seepage often occurs during the mining process, it is necessary to continuously extract and discharge the seepage water in the mining hole during the mining process. Therefore, drainage is especially important for the mining of coalbed methane. Importantly, the current drainage of coalbed methane is generally achieved only by drainage pumps. During the drainage process, it is necessary to maintain a low water level in the hole, which leads to the need to turn on the drainage pump at all times, and when the drainage pump is running at a low water level , it is easy to cause damage to the drainage pump. Moreover, the power of the drainage pump is relatively large, and it wastes electric energy when it is turned on all the time, so it cannot guarantee that it is at a lower water level at all times.

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