31results about How to "Reduce internal temperature rise" patented technology

The invention discloses a retarded cement grinding aid and a preparation method thereof. The retarded cement grinding aid comprises 0.01-0.02wt% of sodium carboxymethyl cellulose, 25-30wt% of molasses calcium, 5-10wt% of citric acid and the balance of water, wherein the total percent is 100%. The retarded cement grinding aid provided by the invention has the beneficial effects that the molasses calcium is used instead of the molasses and cane sugar commonly used at present, is a powdery product prepared by neutralizing the molasses with lime, has better water reducing and retarding effects than the molasses and saves the cost; and the hydration and hardening time of the cement is effectively lengthened so that the freshly mixed cement concrete can maintain the plasticity in a longer time, thus adjusting the setting time of the freshly mixed cement concrete.

The invention discloses a cooling device, a stator and a wind driven generator. The cooling device comprises an air cooling system and a liquid cooling pipeline; the air cooling system comprises a gaseous medium flowing path enabling a gaseous medium to circulate in the wind driven generator and a first heat exchange device arranged on the gaseous medium flowing path; the liquid cooling pipeline comprises a first part located in the first heat exchange device and a second part located in the stator or on the outer surface of the stator; and cooling liquid in the liquid cooling pipeline flows through the first part and the second part in sequence. With the air cooling system and the liquid cooling pipeline combined, the cooling efficiency of the wind driven generator is improved, the internal temperature rise and temperature gradient of the wind driven generator are reduced, and the cooling device has the advantages of high reliability, easiness in maintenance and low cost.

The invention discloses a radiating method of an aluminum electrolytic capacitor bunch of a power unit of a controller for an electric vehicle. The radiating method relates to aluminum electrolytic capacitor modules, a busbar terminal, a binding terminal pillar, a power switch device and a radiator of the power switch device, wherein the aluminum electrolytic capacitor modules are packed in an integrated outer shell in a bunching mode, the busbar terminal and the modules are integrally used for being connected with the power switch device, the binding terminal pillar, the power switch device and the radiator are used for being connected with a storage battery together with the modules in an integral mode, the integrated and square bunch aluminum electrolytic capacitor modules are provided with radiating surfaces which are installed with the radiator and a shell body of a controller in an attached mode, and heat produced by a capacitor is led out of the controller.

The invention discloses and provides an intelligent wire holder which comprises an insulating shell, a wire inlet end and a wire outlet end. The insulating shell comprises a voltage collector and an electronic controller. The wire inlet end is connected with a three-phase or three-phase four-wire power line. The wire outlet end is connected with equipment, a device and/or a load end. The voltage collector is arranged between the wire inlet end and the wire outlet end, the electronic controller is at least provided with at least one communication module and at least one microprocessor, and the voltage collector is connected to at least one electronic controller. The power output port of the intelligent wire holder meets the requirement that an extra stable power supply is provided for a protection apparatus/equipment/device connected to a lower port single-phase wire when the short-circuit voltage drops, and the protection apparatus/ equipment/device connected to the lower port single-phase wire does not need to be provided with a current self-generating power supply device.

The invention relates to a high-power semiconductor laser chip conductive heat dissipation package heat sink and belongs to the technical field of laser. The main technical feature of the invention is that the heat dissipation efficiency of a laser chip is improved by the step structure of the heat sink. The invention keeps the advantages of simple structure, good working stability and convenient use of an existing conductive heat dissipation heat sink by means of structure optimization. Compared with the prior art, the high-power semiconductor laser chip conductive heat dissipation package heat sink obviously improves a heat dissipation path and improves the heat dissipation effect, and is suitable for the conductive heat dissipation package of most semiconductor laser chips.

The invention discloses efficient light alloy motor shell casting equipment. The equipment comprises a casting main body, a fixing support is fixedly connected to the middle of the outer wall of the right side of the casting main body, a control panel is fixedly connected to the top of the fixing support, and a pressurizer is connected to the left side of the bottom of the casting main body. The bottom of an inner cavity of the casting main body is fixedly connected with a casting device. The invention relates to the technical field of motor shells. According to the efficient light alloy motor shell casting equipment, pressure is circulated in the equipment, meanwhile, an adjusting mechanism adjusts under the action of the pressure, casting can be assisted conveniently, the equipment has a movable maintenance space due to the arrangement of a fixed bracket, the problem that the equipment is not easy to replace after being damaged is solved, the internal residual scraps are effectively cleaned, the phenomenon that the surfaces of machined parts are damaged by the residues is further reduced, the internal temperature rise in the casting process can be reduced, and the safety of workers in the working process is effectively guaranteed.

The invention discloses phase-change mass concrete which comprises the following components: 140-170kg/m < 3 > of water; 300-400 kg/m < 3 > of cement; 50-150 kg/m < 3 > of coal ash; 650-850 kg/m < 3 > of fine aggregate; 1000-1200 kg/m < 3 > of coarse aggregate; 9.0-13.6 kg/m < 3 > of water reducing agent; 1-5 kg/m < 3 > of a phase change material; the phase-change material is a high-thermal-conductivity nanoscale microcapsule phase-change material, and the phase-change temperature is 49 DEG C; the phase-change mass concrete prepared based on the phase-change material can effectively slow down the internal temperature rise of the mass concrete, reduce the temperature gradient and reduce the probability of temperature cracks of the mass concrete; and compared with a traditional mass concrete cooling method, the construction cost is greatly reduced, the process is simple, the performance is stable, a traditional cooling water pipe cooling method can be replaced, and the construction period is greatly shortened.

Disclosed is a non-pneumatic tire with built-in round pipe ring and hoop. The non-pneumatic tire comprises a connected outer tire, the pipe surface of the round pipe ring sleeves at least three connected column barrels at equal intervals, two outer side walls of each of the at least three connected column barrels are connected with reverse columns, the reverse columns of the connected column barrels are parallel to a rotating shaft of the round pipe ring, at least one elastic hoop is together placed in a die cavity of a two-section die, upper cavity walls of the cross section of the die cavity are in an omega-shaped circumference, at least three groups of supporting rings which are pairwise opposite, arranged at equal intervals and vertical to an omega round ring rotating shaft are arranged on lower wall surfaces of the die cavity, at least one of same direction ends of the supporting ring groups is provided with a groove, the middle ring line of the round pipe ring coincides with the round ring of the omega-shaped cross section of the die cavity, each elastic hoop is embedded into one groove of same direction supporting ring columns, thereby, the largest circle ring and the smallest circle ring formed by the supporting ring columns and the connected column barrels around the rotating shaft of the round pipe ring can coincide, a liquid colloidal high molecular material is poured into the cavity to form the connected outer tire, and the non-pneumatic tire can be obtained.

A wiring device with a communication function comprises an insulating shell, at least one phase line incoming terminal, phase line outgoing terminals, a voltage collector, an electronic controller and a current collector, wherein the number of the phase line outgoing terminals is N times that of the phase line incoming terminals, and N is an integer larger than or equal to 2. Wherein the electronic controller comprises a power supply module, a communication module, a metering module and a microprocessor; according to the wiring device with the communication function, each branch is provided with a branch current collector, and the current collector is arranged on a conductor between the phase line incoming line terminal and the phase line outgoing line terminal, so that the communication function is realized through structural partition setting or configuration and an electric quantity gathering algorithm; the current of each branch can be monitored, the phase angle of the current of each branch can be distinguished, the current of each phase can be summarized and calculated, and a phase current collector is omitted.

The invention discloses an energy saving type control method of composite switch and an energy saving type composite switch. A first terminal of the composite switch is used for connecting with an electric network, a second terminal is used for connecting with an electric power capacitor, a third terminal is used for connecting with one pole of a relay direct-current power source, a fourth terminal is connected with another pole of the relay direct-current power source after being connected with a control switch in series; a bidirectional controllable silicon switch and a relay normally open contact are arranged in parallel between the first terminal and the second terminal; the third terminal and the fourth terminal are respectively internally connected with A,B ends of a relay coil; a fifth terminal is directly connected with the same pole of the direct-current power source connected with the fourth terminal; a capacitor is connected between the fifth terminal and the A end of the coil; a resistor is connected between the A end of the coil and the third terminal. Because the current across the relay coil is greatly reduced after applying the electric power capacitance, the heating amount of the coil is obviously reduced and furthermore the whole work reliability of the relay and the composite switch is greatly increased.