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90results about How to "Flow balance" patented technology

Ultrasonic vibration microtube extrusion mould

InactiveCN101947846AUniform distribution of melt flow fieldUniform distribution of flow fieldTubular articlesTransformerEngineering
The invention discloses an ultrasonic vibration microtube extrusion mould, belonging to the technical field of polymer extrusion moulding. The invention is characterized in that the mould comprises an ultrasonic-frequency power supply, an energy converter, a vibration rod, an amplitude transformer, a vibration head, a die head body, a spure sperader, a support plate, a positioning pin, a die supporting plate, a baffle plate, a fastening bolt, a washer, a die, a check ring, an integrated pressure/temperature sensor, a mandrel, an adjusting bolt, an air vent bolt, a heating ring, a temperature sensor, a connecting pipe and a flange plate. The mould adopts a feeding mode of which feeding direction is perpendicular to the extrusion direction; the vibration head adopts a spiral groove type structure and vibrates along the microtube extrusion direction; different spure speraders, mandrels and dies with different structural parameters can be changed according to demands; and the integrated pressure/temperature sensor is used to measure the changes of the pressure/temperature in the runner of the mould. By designing the ultrasonic vibration microtube extrusion mould capable of realizing vertical feeding, ultrasonic vibration is combined with the plastic microtube extrusion moulding, thus reducing flow resistance, increasing the production efficiency and obtaining the plastic microtube with high quality.
Owner:DALIAN UNIV OF TECH

Heat-supply pipe network self-adaptive flow balancing method and device

The invention discloses a heat-supply pipe network self-adaptive flow balancing method and a heat-supply pipe network self-adaptive flow balancing device. The method comprises the following steps: firstly, acquiring the flow and the pressure at a valve, an indoor temperature and an outdoor temperature; secondly, comparing measured data with set values; and thirdly, adjusting the opening degree ofthe valve according to whether the measured data exceed the range of the set values, and balancing the flow in a system by adjusting the opening degree of the valve, so that the purpose of balancing the flow is achieved. The device comprises flowmeters, pressure sensors and thermometers which are mounted beside the valve; the flowmeters, the pressure sensors and the thermometers are all connectedwith a data acquisition module; the data acquisition module communicates with a data processing module; the data processing module is also connected with an indoor thermometer and an outdoor thermometer; and the data processing module is connected with an executing mechanism which controls the opening degree of the valve. The heat-supply pipe network self-adaptive flow balancing method and the heat-supply pipe network self-adaptive flow balancing device can adjust automatically in real time to balance the flow in a pipe network; and the timeliness is good. The professional requirement on working personnel of a heating power company is reduced.
Owner:华能青岛热电有限公司 +1

Coaxial dual-electromagnetic fuel gas injection valve with flowing sectional area adjustable

The invention aims at providing a coaxial dual-electromagnetic fuel gas injection valve with the flowing sectional area adjustable. The adjustable gas injection flow is achieved through a dual-valve-element dual-electromagnet control structure. The air inflowing and flow guiding process is achieved through a bypass structure and a flow guiding cavity structure; valve element control and gas way control are achieved through actuator control, and a gas injection function is achieved; through cooperation of an external guiding structure, an internal flow guiding cavity and a pressure balancing groove, the perpendicularity of a valve element is guaranteed, stable and reliable work of gas flow is achieved, and the high responding speed is achieved; through a mixed gas inflowing mode of combining direct gas inflowing of an axial main gas groove and gas inflowing of circumferential gas supplementing holes, high flow is achieved, the gas supplying efficiency of an engine is effectively improved, and meanwhile gas flow interference can be avoided, so that gas way stability is achieved; face sealing and high reliability of the fuel gas injection valve are achieved through multiple annular strip structures between the valve element and a valve base.
Owner:HARBIN ENG UNIV

Oil processor for transformer

The invention discloses an oil processor for a transformer. The oil processor comprises an oil inlet valve, an adsorption tank group, a first buffering tank, a second buffering tank, a slab oil filter and an oil outlet valve, wherein the outlet of the oil inlet valve is connected with the inlet of the adsorption tank group, the outlet of the adsorption tank group is connected with the inlet of the first buffering tank, and the outlet of the first buffering tank is connected with the inlet of the slab oil filter; the outlet of the slab oil filter is respectively connected with the inlet of the oil outlet valve and the inlet of the second buffering tank group, the outlet of the second suffering tank group is connected with the outlet of the oil outlet valve, and two ends of an inner circulating valve are correspondingly connected with the outlet of the first buffering tank and the outlet of the oil inlet valve; two ends of an oil pumping valve are correspondingly connected with the inlet of the slab oil filter and the inlet of the adsorption tank group. The oil processor has the beneficial effects that the deteriorated oil can be retextured conveniently, rapidly, safely and efficiently on the scene, vast resources are saved, the production cost of an enterprise is lowered, and the environmental pollution is reduced.
Owner:STATE GRID CORP OF CHINA +3
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