3results about How to "Strong economic applicability" patented technology

This invention discloses a continuous ultrasonic amplification standing wave field-ozone micro-nano bubble synergistic inactivation device for mariculture, comprising a seawater pretreatment unit, an ozone micro-nano bubble generating unit, an ultrasonic amplification standing wave field-ozone micro-nano bubble synergistic inactivation reaction unit, a multi-parameter effluent detection unit, and a closed-loop control unit connected in sequence. The reaction chamber adopts a three-layer coaxial nested configuration of 316L stainless steel. The inner tube wall has a regular polygonal prism structure, while the outer tube wall has a multi-segment continuously circulating "gradually expanding-constant diameter-gradually contracting" irregular tube structure. High- and low-frequency multi-array ultrasonic transducers are correspondingly arranged on the inner and outer wall surfaces to synergistically construct a blind-zone-free gradient amplification standing wave field. This invention achieves efficient and continuous inactivation of pathogenic microorganisms in mariculture water by targeting and enriching pathogenic microorganisms at the acoustic pressure nodes of the standing wave field, concentrating the excitation of multi-frequency resonant cavitation effects at the acoustic pressure antinodes, and coupling ozone micro-nano bubbles to reduce the cavitation threshold and leverage their high oxidizing properties.

The application discloses a kind of gob-side entry retaining support structure and construction method of steeply inclined coal seam fully mechanized working face.The support structure is arranged in the transport roadway near the side of goaf, including anchoring load-bearing parts, net body gangue retaining parts, restraint reinforcement, pre-stressed locking parts and flexible sealing material;Anchoring load-bearing parts are laid in the roof and bottom corner surrounding rock, net body gangue retaining parts are hung on the exposed section of anchoring load-bearing parts and cover along the whole height of roadway, restraint reinforcement is overlaid on the outside of net body and is connected with anchoring load-bearing parts, pre-stressed locking parts are set on the end of anchoring load-bearing parts and pre-tightening force is applied to form support base surface, and flexible sealing material is sprayed on the support base surface for sealing.The construction method includes drilling anchoring, hanging net body, installing restraint reinforcement, locking pre-tightening, spraying sealing.The application realizes the integration of support structure, has good gangue retaining and sealing effect, adapts to steeply inclined coal seam working condition, is convenient to construct and can be operated synchronously with mining, effectively improves the safety and reliability of gob-side entry retaining, and reduces the cost of mining.

The application discloses a method for determining the minimum buried depth of a compressed energy storage underground gas storage, comprising the following steps: setting basic parameters of the compressed energy storage underground gas storage according to geological data of rock and volume requirements of the gas storage; considering factors of gas storage pressure, rock gravity, shear strength of surrounding rock and broken surface of the surrounding rock under pressure, establishing a vertical mechanical equation of the gas storage by adopting a conical body model, and obtaining a vertical buried depth capable of meeting maximum gas storage pressure requirements; and establishing a horizontal mechanical equation of the gas storage according to the basic parameters and the vertical buried depth of the gas storage, and obtaining a horizontal buried depth capable of meeting the maximum gas storage pressure requirements. Whether the vertical buried depth of the gas storage meets the limit inflation pressure is determined first, and then the horizontal broken surface mechanical equation is substituted into the horizontal buried depth on the basis of the vertical buried depth, so as to determine whether the horizontal buried depth meets the limit inflation pressure. The calculation method is simple, fast, accurate, and has good economic applicability.