42results about How to "Strong destructive power" patented technology

The invention discloses a land-based array type high-energy laser antiaircraft method, in particular, relates to an antiaircraft defensing method for forming high-energy laser weapons by combining multiple land-based low-power laser emitter arrays, belongs to the technical field of laser antiaircraft weapons, and solves such defects as difficult production, use and maintenance, easy attack by enemies and incapability of quickly maintaining after attack caused by large size of a traditional high-energy laser weapon. Single laser weapon is formed by a small-lower laser generator and auxiliary equipment; multiple times of array combinations are performed for single laser weapon to finally form a national land-based laser weapon antiaircraft system; and the combined system can achieve high emitting power and low power supply power needed by single laser weapon, can realize operation of an accumulator spare unit, is low in total manufacturing cost and wide in antiaircraft range, can perform multi-array and multi-city unite antiaircraft, is low in operation and maintenance costs, is high in enemy destructive resistance, and is high in practicability.

The invention discloses a land-based array type high-energy laser weapon defensing method, in particular, relates to an antiaircraft defensing method for forming high-energy laser weapons by combining multiple land-based low-power laser emitter arrays, belongs to the technical field of laser antiaircraft weapons, and solves such defects as difficult production, use and maintenance, easy attack by enemies and incapability of quickly maintaining after attack caused by large size of a traditional high-energy laser weapon. Single laser weapon is formed by a small-lower laser generator and auxiliary equipment; multiple times of array combinations are performed for single laser weapon to finally form a national land-based laser weapon antiaircraft system; and the combined system can achieve high emitting power and low power supply power needed by single laser weapon, can realize operation of an accumulator spare unit, is low in total manufacturing cost and wide in antiaircraft range, can perform multi-array and multi-city unite antiaircraft, is low in operation and maintenance costs, is high in enemy destructive resistance, and is high in practicability.

The invention relates to a municipal facility, in particular to a ring rib type well cover. It consists of a cover body, outer ring beams, connecting ribs, radial ribs and inner ring beams. The center of the bottom of the cover is a ring-shaped inner ring beam. The inner ring beam is coaxial with the cover body and the outer diameter of the inner ring beam is 1 / 4 of the outer diameter of the cover. The three radial ribs form an angle of 120° with each other on the plane. And along the diameter direction of the cover body, the edge of the cover body and the outer circumference of the inner ring beam are connected as a whole. The bottom surface of each radial rib is an inclined plane, and the three connecting ribs form an included angle of 120° with each other on a plane and form an included angle of 60° with adjacent radial ribs. Each connecting rib connects the inner wall of the outer ring beam and the outer periphery of the inner ring beam along the diameter direction of the cover body. The invention greatly improves the pressure resistance of the manhole cover and saves materials at the same time.

The invention discloses a packaging bag convenient to open. The packaging bag comprises a bag body and a folding plate wrapped in the bag body, wherein a prefabricated mark penetrating through the folding plate is transversally arranged on the folding plate; and the prefabricated mark is zigzag. The technical problem that an existing packaging bag, in particular, a thick packaging bag, is not easy to open, is solved, and better use experience is provided for a user.

The invention relates to the technical field of improvement of the permeability of downhole low-permeability coal seams of coal mines, and discloses a system for improving the permeability of coal bymeans of periodic hammering by the aid of high-pressure air pulses and water waves. The system is characterized in that cracking equipment comprises a high-pressure gas release pipe, a hole sealing capsule and a high-pressure double-layer delivery pipe, the high-pressure double-layer delivery pipe comprises an inner-layer high-pressure double-layer gas delivery inner pipe and an outer-layer high-pressure double-layer water delivery outer pipe, the high-pressure double-layer gas delivery inner pipe is connected with the high-pressure gas release pipe, a plurality of unidirectional gas release holes are formed in the high-pressure gas release pipe, and the hole sealing capsule is arranged on the outer wall of the high-pressure double-layer delivery pipe and is close to the high-pressure gasrelease pipe; a water filling device is communicated with the high-pressure double-layer water delivery outer pipe and can deliver water into cracking holes; an inflating device is communicates with the hole sealing capsule and the high-pressure double-layer gas delivery inner pipe, and can deliver gas into the hole sealing capsule or the cracking holes in a switching manner, and the hole sealingcapsule can be radially expanded to seal holes after being inflated. The invention further provides a method for improving the permeability of the coal by means of periodic hammering by the aid of thehigh-pressure air pulses and the water waves. The method is used with the system for improving the permeability of the coal.