40results about How to "Easy to implement modular design" patented technology

The invention relates to a high-power switching power supply circuit with multiple outputs. The high-power switching power supply circuit comprises an input rectifying and energy storage capacitive circuit, wherein an input end of the input rectifying and energy storage capacitive circuit is connected to alternating current, and an output end of the input rectifying and energy storage capacitive circuit is respectively connected with the input ends of an auxiliary power supply, a main power converting circuit and a control circuit; the auxiliary power supply provides electricity for the control circuit; an output end of the main power converting circuit is connected with the input ends of at least two output rectifying and filtering circuits; the output ends of the output rectifying and filtering circuits are connected with an input end of a BUCK circuit; an output end of the BUCK circuit is sampled and serves as an input of the control circuit; and a driving end of the control circuit is respectively connected with the main power converting circuit and the BUCK circuit. The BUCK circuit is relatively simple in structure, a control protection circuit of the BUCK circuit is easy to implement, the modularization design of the BUCK circuit is easy to implement, the structure is compact and the efficiency is high.

The invention relates to a quick-change type valve hot forging die. The quick-change type valve hot forging die comprises a quick-change forging die body, a U-shaped gasket, a die holder and screws. The U-shaped gasket is fixed to the die holder through the screws. The quick-change forging die body is clamped on the die holder through the U-shaped gasket. The side wall of the quick-change forging die body is composed of an upper convex structure, a middle concave structure and a lower convex structure. The upper surface of the middle concave structure is the lower surface of the upper convex structure. The lower surface of the middle concave structure is the upper surface of the lower convex structure. During die installation, the U-shaped gasket is fixed to the die holder through screwed screws, and the U-shaped gasket ejects the upper surface of the lower convex structure. During die detachment, the unscrewed screws eject the lower surface of the upper convex structure. The invention further relates to an installation method of the quick-change type valve hot forging die, and a detachment method of the quick-change type valve hot forging die. By means of the quick-change type valve hot forging die, the installation method and the detachment method, the operation time is greatly saved, materials are effectively saved, and operation is easy and convenient. The invention belongs to the technical field of hot forging dies.

The invention provides a control valve block system for testing hydraulic cylinders, and belongs to the field of mechanical hydraulics. The system comprises a first main oil port and a second main oil port that are used for receiving hydraulic oil from oil sources, hydraulic cylinder connectors connected with rod cavities and rodless cavities of the hydraulic cylinders, at least two groups of function reversal valves, at least two groups of selection reversal valves and selection units, wherein pressure ports of two-position three-way reversal valves are communicated with each other, and connected with outlets of the selection units; the first main oil port is communicated with a working cavity of a cartridge valve in each cartridge valve unit; the second main oil port is communicated with inlets of hydraulic control one-way valves in the selection reversal valves; and the first main oil port and the second main oil port are communicated with the two-position three-way reversal valves communicated with each other through the selection units. The invention further provides a method. According to the system and the method, mounting is required only once; the two hydraulic cylinders are measured simultaneously; an independent overflow loading device is avoided; the efficiency is improved; and the cost is lowered.

The invention discloses a liquid cooler with double condensation and double heat dissipation. On the basis of a conventional liquid cooler (with dual modes of compressor refrigeration and forced air cooling), a special cycle branch is added to realize a special cycle, forming a double Condensation double heat dissipation structure realizes condensation heat release and forced air cooling function. The special cycle is composed of three kinds of cycles, namely, compressor refrigeration cycle + coolant refrigeration cycle + coolant heat dissipation cycle. Working in this state, it can realize The liquid supply temperature is regulated by dual control of compressor refrigeration and forced air cooling, which can avoid the risk that the forced air cooling mode alone cannot meet the temperature control requirements when the ambient temperature is low and the temperature control range is wide, or the risk that the compressor cooling mode alone may occur Condensation mismatch or insufficient liquid return, etc., so as to enhance the environmental adaptability of the unit.

The invention discloses a direct contact composite type heat exchange system. The system comprises a heat exchanger, a liquid level apparatus, a gas and liquid separator, a gas mass flowmeter, a platetype condenser, a stop valve I, a vacuum liquid storage tank, a liquid mass flowmeter, a centrifugal pump, a check valve, a manual adjusting valve, a nozzle, a turbine generator, a spiral channel, astop valve II, a heat conduction oil inlet, a heat conduction oil outlet, a valve, a pump, a heat conduction oil storage tank, multiple pressure meters, and multiple thermometers. Heat media enter thespiral channel, the reverse flow manner from top to bottom is adopted for transferring heat to matter in the heat exchanger, the stirring in the heat exchanger is increased, the two-phase flow innerheat transfer is greatly reinforced, and when the system is applied to the power generation field, the power generation efficiency is higher; and compared with an outer heating device of a common direct contact heat exchanger, the inner spiral channel makes direct contact with the heat exchanger, the heat exchange process can be reduced, the fire losses are reduced, and the energy use rate is improved.

The invention provides an oil pumping unit of which a sucker rod is directly driven by a linear motor. The oil pumping unit comprises a rack, a linear motor driving device, a single-stage or multi-stage telescopic machine or a gas spring energy storage device, a linear motor rotor, a sucker rod connector and the like, wherein the linear motor driving device, the single-stage or multi-stage telescopic machine or the gas spring energy storage device, the linear motor rotor, the sucker rod connector and the like are arranged on the rack. The oil pumping unit cancels the connection of elastic pieces or radial components such as hair braids, steel wire ropes and belts for an original oil pumping unit, adopts a direct balance mode, and thus cancels the reversing device (head sheave) of an existing non-beam oil pumping unit, so that the efficiency of the oil pumping unit is further improved, the height and weight of the oil pumping unit are reduced, and the service life, reliability and safety of the oil pumping unit are improved.

The invention relates to an interleaving buck chopper direct-current source energy storage control system and method. The system comprises a power circuit and a control circuit, and the power circuit comprises a buck circuit and a chopper circuit; the buck circuit is an industrial frequency transformer, the industrial frequency transformer comprises a primary coil and two secondary coils, the chopper circuit comprises two groups of BUCK circuits which are connected in parallel, and the two groups of BUCK circuits are connected with the two secondary coils respectively. The interleaving buck chopper direct-current source energy storage control system and method can support 260A output direct currents, are simple in circuit and convenient to control, and meanwhile have the advantages of being high in input power factor (above 0.96), low in output direct current ripple and the like.