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121results about How to "Reduce bulk" patented technology

Presplitting blasting method for water holes close to high and steep slopes

ActiveCN102519324ALower base rateLow costBlastingDetonatorDetonation
The invention particularly relates to a presplitting blasting method for water holes close to high and steep slopes, which adopts a reversing hole distribution mode to distribute holes according to a profile map of a slope face. The technical parameters are that coefficient of not coupling of water hole presplitting hole (5) is 1.5-4.5, pitch of the water hole presplitting hole (5) is 1.5-3mm, space between rows of the water hole presplitting hole (5) and cushion hole (6) is 2.5-3m, thread stitching density of the water hole presplitting hole (5) is 1.5-3.5 kg/m, and the hole net parameter ofa main armament hole (7) is 4x4-6x5m2. Explosive charges (4) are filled in the bottoms of the water hole presplitting hole (5), and then a detonating cord (2) is filled in the water hole presplittinghole (5). Each of the 1-8 times of explosive charges is carried out according to the sequence of repeatedly enabling a spacer (3) to be filled in and enabling the explosive charges (4) to be filled in until completion of filling. After the water hole presplitting hole (5) is plugged, the detonating cord (2) and a non-conductivity booster detonator (1) are connected outside the water hole presplitting hole (5) to make preparation for detonation, and advance detonation time of the water hole presplitting hole (5) is 80-100ms. The presplitting blasting method has the advantages of reducing basalrate, reducing large blocks and being high in efficiency and low in consumption.
Owner:福建省新华都工程有限责任公司

Pod-type water spraying propeller

InactiveCN107244405AStrong anti-cavitation abilityReduce vibrationPropulsive elementsPump-jetPropulsive efficiency
The invention provides a pod-type water jet propulsion unit, which comprises an installation platform, a pod propeller bracket arranged at the lower end of the installation platform, a pod propeller cabin body arranged at the lower end of the pod propeller bracket, a pod propeller cabin body arranged at the pod propulsion The motor base in the cabin body, the motor installed on the motor base, the transmission shaft connected to the output end of the motor, the water jet propulsion pump installed on the transmission axis, the lower end of the pod propeller cabin is provided with an inlet, a side A spout is provided, a flow channel is formed between the inlet and the spout, and the spout is set facing the water jet propulsion pump, and the upper end of the installation platform is provided with a data transmitter and a hydraulic steering device. The present invention is on the basis of maintaining the advantages of the original water jet propeller, adding the bracket, cabin body, electric propulsion system and steering device of the pod propeller, thereby reducing the complicated mechanical transmission mechanism and reversing device of the water jet propeller, further The propulsion efficiency and operational performance of the thrusters are improved, the noise is reduced and the stealth performance is enhanced.
Owner:HARBIN ENG UNIV

Propeller varying device of wind driven generator

ActiveCN109026531AGood pitch effectImprove stability and power generation efficiencyWind motor controlMachines/enginesPropellerWind driven
The invention discloses a wind driven generator of a wind driven generator. The wind driven generator comprises a machine shell. First rolling bearings are fixedly connected with the middle of the right side of the inner wall of the machine shell. A hollow spindle is movably connected into the first rolling bearings. The right end of the hollow spindle sequentially penetrates through the first rolling beating and the machine shell from left to right, and extends out of the machine shell to be fixedly connected with a wind wheel. A push rod is arranged on the right side of the wind wheel and corresponds to the position of the hollow spindle. Through mutual cooperation of the hollow spindle, the wind wheel, the push rod, a triangular block, a baffle, a reset spring, second rolling bearings,a threaded rod, a threaded sleeve, a pulley, a positive and negative motor, a positive and negative rotating shaft, a first bevel gear, a second bevel gear, fixing plates, bearing seats, rotating blocks and inserting rods, excellent propeller varying effect is achieved, synchronous propeller varying of each blade is achieved. Stability and electric generating efficiency of the wind driven generator are improved, and the service life of the wind driven generator is prolonged.
Owner:国家电投集团广西兴安风电有限公司

Firefighter pocket tool

InactiveUS20090211034A1Reduce bulkReduce combined weightPliersSpannersEngineeringFunctional features
A firefighter pocket tool achieves its objectives by combining the functional features of several traditional tools (slip groove pliers of the curved jaw type, 6 in 1 screwdriver, spanner wrench, gas shut off tool and a striking tool) onto a shared single structure. The structure of the firefighter pocket tool comprises a pair of slip groove plier members each having a jaw portion, a joint portion and a handle portion, a pivotal bolt, nut and spring member. The upper jaw of the slip groove pliers is of the curved jaw type. Upon the “upper” rear portion of the pliers' “upper” jaw's head there is formed a protrusion that forms a striking surface and a hook and claw. The hook and claw is located so as to allow it to be used as a spanner for rocker lug type and similar fire hose couplings. As this same plier member crosses over the other plier member, it forms a plurality of arcuate adjustable channels with which the arcuate protuberance from the other plier member is engaged. Protruding from the top or rear handle (just above the gripping area) is another protrusion. This protrusion is of a rectangular shape. In the middle of this protrusion is a loop in the shape slightly larger than standard natural gas shut off valves. Two independently sized hexagonal open shafts that form the handles and nut-driver/bit holders. The spanner hook and claw could also be used to operate valves (such as smaller gas supply shut offs). The gas shut off loop can also be used as a guard for fingers when the tool is being used as a striking implement.
Owner:LIONEL MIKE

Ocean heat energy open circulation power generation system

InactiveCN103790793AReduce volumeBreak through the problem of limited capacityMachines/enginesMechanical power devicesExhaust pipeSeawater
The invention discloses an ocean heat energy open circulation power generation system which comprises a flash evaporator, a warm seawater pipe, a warm seawater pump, a low-pressure steam pipe, a front-arranged small steam turbine, a steam compressor, a high-pressure steam pipe, a main steam turbine, a power generator, a steam exhaust pipe, a surface type condenser, a cold seawater pipe, a cold seawater pump, a steam pumping pipe and a heat exchange pipe bundle. Low-pressure steam is divided into two channels, one channel of low-pressure steam enters the front-arranged small steam turbine to do work to drive the steam compressor to work, the other channel of low-pressure steam is compressed by the steam compressor to become high-temperature high-pressure steam, the high-temperature high-pressure steam then enters the main steam turbine to do work to drive the power generator to generate power, part of steam is pumped from the main steam turbine to be used for heating seawater in the flash evaporator, and the amount of the steam generated by the flash evaporator is increased. According to the ocean heat energy open circulation power generation system, the size of the steam turbine in existing open circulation is effectively reduced, and the problem that the unit capacity is limited is solved; the ocean heat energy open circulation power generation system has the advantages of being high in system heat efficiency, high in water power utilizing rate, high in net power generated power and the like.
Owner:JIMEI UNIV
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