969results about How to "Reduced insulation performance" patented technology

A display device guiding apparatus includes a receiving portion in which a display device can be received and a guide unit provided between the display device and the receiving portion. The guide unit includes a hinge assembly for pivoting the display at a predetermined angle, an arm assembly having first and second ends respectively connected to the hinge assembly and the receiving portion, and a pivot control unit providing a pivotal force of the arm assembly with respect to the receiving portion.

A printed wiring board includes a mounting portion on which a dual core processor including two processor cores in a single chip can be mounted, power supply lines, ground lines, and a first layered capacitor and a second layered capacitor that are independently provided for each of the processor cores, respectively. Accordingly, even when the electric potentials of the processor cores instantaneously drop, an instantaneous drop of the electric potential can be suppressed by action of the layered capacitors corresponding to the processor cores, respectively. In addition, even when the voltage of one of the processor cores varies, the variation in the voltage does not affect the other processor core, and thus malfunctioning does not occur.

The invention provides a low density paperboard material for use in producing an insulated container, and is especially well-suited for making cups. The paperboard material comprises a paperboard web including wood fibers and expanded microspheres, and has a relatively low density ranging from about 6 to about 10 lb/3MSF/mil, a relatively high caliper ranging from about 24 to about 35 mil, and an internal bond strength of at least about 80×10⁻³ ft-lb_f preferably at least 100×10⁻³ ft-lb_f. For applications such as cups the material is also coated on one or both sides with a barrier coating, preferably low density polyethylene, to limit liquid penetration into the web. The low density paperboard material of the invention is convertible for manufacture of containers, particularly cups, and the surface of the low density board may have a Sheffield smoothness of 300 SU or greater.

A silicon carbide vertical MOSFET having low ON-resistance and high blocking voltage. A first deposition film of low concentration silicon carbide of a first conductivity type is formed on the surface of a high concentration silicon carbide substrate of a first conductivity type. Formed on the first deposition film is a second deposition film that includes a high concentration gate region of a second conductivity type, with a first region removed selectively. A third deposition film is formed on the second deposition film, which includes a second region that is wider than the selectively removed first region, a high concentration source region of a first conductivity type, and a low concentration gate region of a second conductivity type. A low concentration base region of a first conductivity type is formed in contact with the first deposition film in the first and second regions.

The invention relates to SiO2 nano composite thermal insulation paste, which is characterized in that the form of the SiO2 nano composite thermal insulation paste is a paste mixture, and the dried paste mixture becomes micro pores, nano holes and a fiber structure compound. The paste comprises the following components by weight percentage: 20 to 50 percent of SiO2 nano aerogel, 0 to 30 percent of inorganic closed-hole micro-bead material, 7 to 15 percent of expanded pearlite, 0 to 1 percent of bentonite, 2 to 6 percent of penetrating agent, 10 to 20 percent of adhesive, 3 to 6 percent of calcium silicate fiber, 0 to 5 percent of magnesium aluminum silicate fiber, 0 to 5 percent of aluminum silicate fiber, 0 to 40 percent of water, 0.1 to 2 percent of flame retardant, and 3 to 7 percent of pigment. A preparation device is a vacuum intake and stirring device.

The invention relates to a coating for cable which is capable of protecting the cable against accidental impacts. By inserting into the structure of a power transmission cable a suitable coating of expanded polymer material of adequate thickness, preferably in contact with the sheath of outer polymer coating to obtain a cable which has a high impact strength.

An aqueous binder composition is provided that includes a protein-containing biomass and a pH adjuster. Optionally, a crosslinking agent and/or a moisture resistant agent may be included in the binder composition. The protein-containing biomass is natural in origin and may be derived from plant or animal sources. The pH adjuster is used to adjust the pH of the binder to a desired pH and lower the viscosity of the protein-based biomass. In addition, the pH adjuster may act as a crosslinking agent. The crosslinking agent may be any compound suitable for crosslinking the protein-containing biomass and reacting with the moisture resistant agent, when the moisture resistant agent is present in the binder. In addition, the binder has a light color after it has been cured. The environmentally friendly, formaldehyde-free binder may be used in the formation of insulation materials and non-woven chopped strand mats.

The present invention provides an inorganic foaming thermal-insulation mortar and a preparation method thereof, and belongs to the technical field of building material preparation. The thermal-insulation mortar comprises a cementing material, expanded perlite particles, a macromolecule polymer, a coagulant, an early strength agent, a physical foaming agent, a chemical foaming agent hydrogen peroxide, a chemical foaming agent foaming catalyst, a hydrophobic agent, reinforced short fibers and water. According to the present invention, the inorganic foaming thermal-insulation mortar can be directly coated on the wall and the roof requiring the thermal-insulation treatment, the thickness of the inorganic thermal-insulation mortar layer can be adjusted within 10-100 mm, screeding finishing construction is performed before the cementing material is subjected to final setting, and hardening is performed to obtain the inorganic thermal-insulation mortar layer with characteristics of good durability, good water resistance and good heat insulation, wherein the inorganic thermal-insulation mortar layer never sheds, and has the same service life as the building being subjected to thermal-insulation by the inorganic thermal-insulation mortar layer; and the raw material cost is low, and significant economic benefits and environmental benefits are provided.

The present invention discloses a polymer modification expansion perlite and the preparation method. The polymer modification expansion perlite is a polymer modification expansion perlite particle used to carry out the surface coating modification by adopting the polymer modifiers. The preparation method is that the expansion perlite is delivered into a rotary drum, and the polymer modifiers are delivered into the rotary drum from the other inlet of the rotary drum in the form of sprayer together with the hot air, the temperature of which ranges from 30 to 150 Celsius system. A polymer film with a certain strength is formed on the surface of the expansion perlite, and the materials are outputted from a discharge hole so as to obtain the polymer modification expansion perlite particle. The present invention has the following advantages: the polymer modifiers completely coat the expansion perlite particle, thus lowering the water absorption and eliminating the defect that the expansion perlite easily absorbs the water with the thermal insulation performance lowered; the polymer film with a certain strength and toughness is formed on the surface of the expansion perlite, thus solving the problem that the expansion perlite is easy to be broken up with lowering the quality of the products in the process of transportation and use; the preparation technique is simple and is easy to be carried out and controlled, thus being beneficial to the industrialized popularization and application.

A heat insulating reflecting anticorrosive paint, in a coordinated system composed of bottom, surface and middle layer paints coated on surface of concrete or metal, is suitable for sea climate and chemical engineering air severe atmosphere, which breaks convention of making the heat reflecting surface paint in white in prior market. Surface paints in present coordinated system is added with dye infrared transparent block powder with special function or gray, yellow and brown series made of titanium yellow powder so that the color of paints is versatile, which enlarges use scale. The whole paint system has excellent heat insulating, solar heat reflecting property by rational match and good heavy-duty anticorrosive property as well as excellent weather resistance. Thickness of total dry film does not exceed 250microns. Heat reflecting effect of surface paint in various colors is similar to that of white paint which has greater reflectivity and insulating effect. Compared with a tank coating aluminum powder chlorinated rubber solvent, the tank coating the paint has inner temperature 15 DEG.. C lower, surface temperature 23 DEG.. C.

The invention belongs to the field of refractory materials and discloses a preparation method of a fused silica refractory casting material unwetted by an aluminum liquid, which comprises the following step of: enhancing a ground substance by adopting 10-20wt% of white alundum powder, 4-8wt% of calcium aluminate cement, 3-5wt% of hydrated alumina compound binding agent, 4-10wt% of silicon oxide micropowder and 3-6wt% of alumina micropowder, wherein 60-70wt% of fused silica is used as a main material, BaSO4 and Na3AlF6 is adopted as a compound aluminum liquid anti-wetting agent with the addition of 1-6wt%, and additional 0.12wt% of trimeric sodium phosphate and additional 0.03wt% of sodium hexametahposphate are adopted as dispensing agents. The casting material prepared by using the method has high strength, is unwetted by the aluminum liquid, has the highest use temperature of 1000 DEG C and can be used as the refractory materials, such as an aluminum flowing groove of an aluminum smelting furnace and the like.

A meter socket adapter includes an insulating housing that is connected to a power circuit on one side by bus bars and connected to a watt-hour meter on the other side by jaw contacts. The housing includes insulating compartments for current transformers through which the bus bars extend. Current transformers extend around the bus bars and are housed in individual compartments in the current transformer housing. Transformed current is directed to the jaw contacts for metering with the watt-hour meter. The bus bars include an insulating layer there on, reducing the need for insulation around the secondary of the current transformers. The current transformers are then significantly smaller and fit within a K-Base meter socket. The adapter housings define a cavity with separate dielectric plates between the bus bars and the jaw contacts. The adapter conveniently allows for self-contained meters to be used in high current installations.

A ground detection apparatus for electric automobile having a high-voltage DC power supply (31) which is electrically insulated from a body and a three-phase AC motor (33) which is driven by a DC voltage from the high-voltage DC power supply. A ground detection signal consisting of a square waveform is supplied to the DC power supply circuit through a detection resistor and a coupling capacitor, a voltage amplitude of a ground detection point serving as a connection point between the detection resistor (3) and the coupling capacitor (4) is detected, the detected voltage amplitude is converted into an insulation resistance on the basis of the relationship between a preset voltage amplitude and a preset insulation resistance, and levels of insulation resistance deterioration of the high-voltage DC power supply are detected by comparing the converted insulation resistance with a preset ground decision threshold value.

The invention provides a coal mine grid system insulation state monitoring method and belongs to an electrical power system feed line insulation state monitoring method. A feed line branch circuit is selected for doing single-phase longitude metal grounding experiment, zero sequence voltage of a bus and zero sequence current of a non-malfunction branch circuit are tested, zero sequence impedance of the non-malfunction branch circuit is obtained, namely, insulation resistance and ground capacitance, for obtaining insulation parameters of all circuits, another branch circuit is reselected to do a single-phase connection low resistance ground experiment or the next circuit with the non-branch-circuit number 1 is waited for generating single-phase ground malfunction, the experiment is repeated, insulation parameters of a first experiment malfunction circuit are obtained, and the insulation parameters of all feed line branch circuits are obtained by synthesizing results of the two experiments. The coal mine grid system insulation state monitoring method has the advantages that insulation degradation degree of the circuits is analyzed from state change of the bus zero sequence voltage and an arc suppression coil, the zero sequence voltage changes to a certain extent, switching-in situations of damping resistance change, and the degradation degree of circuit insulation is forecasted by monitoring change of transient states of a plurality of feature quantities.

An electrostatic precipitator, including for a diesel engine electrostatic crankcase ventilation system for blowby gas, includes a corona discharge electrode assembly in a housing, an insulator extending along an internal surface of a wall of the housing, a power supply in the housing on the opposite side of the insulator from the housing wall such that the insulator is between the housing wall and the power supply, and a low voltage lead extending through the housing wall and through the insulator to the power supply, eliminating pass-through of a high voltage lead through the housing wall and through the insulator. The power supply is preferably provided in the hollow interior of the corona discharge electrode assembly.

The invention discloses an active type direct-current system insulation resistor detection method. The active type direct-current system insulation resistor detection method is applicable to real-time detection of insulation resistors of a direct-current high-voltage source electrical equipment system. The insulation resistor detection method comprises the two stages of fault detection and insulation resistor calculation. According to the fault detection, a parallel-connection resistance value of the positive and the negative insulation resistors can be calculated by measuring voltage values at the two ends of a measurement resistor, and whether the positive and negative insulation resistors break down or not is judged according to the parallel-connection resistance value. According to the insulation resistor calculation, the resistance values of the positive and negative insulation resistors can be calculated by measuring voltage values at the two ends of an access resistor. The active type direct-current system insulation resistor detection method has the advantages that the fault conditions of the positive and negative insulation resistors can be monitored in real time, the whole load is not affected, and the basis is provided for fault diagnosis of the whole system by calculating the resistance values of the positive and negative insulation resistors.

Provided is an armature for an electric rotating machine wherein the eddy current loss can be reduced while enhancing the space factor of coil. The present invention relates to an armature (2) for an electric rotating machine including a cylindrical core (11) where a plurality of slots (12) extending in the axial direction are positioned in a dispersion manner in the circumferential direction, and a coil (21) wound in the slots (12) each of which is formed in such a manner that the circumferential width of the inner circumferential opening of the slot (12) is narrower than the inner circumferential width of the slot, the circumferential width of a linear conductor constituting the coil is wider than the circumferential width of the inner circumferential opening, the coil end (23) of the coil (21) on one side in the axial direction thereof is a bent coil end (24); which is bent radially inward and provided with a radial conductor (25), and at a radial position in the radial conductor (25) corresponding to the inner circumferential opening, a narrow recess (32) which is recessed for other portion of the radial conductor (25) is provided so that the circumferential width becomes narrower than that of the inner circumferential opening.

A laminated common-mode choke coil offering higher insulation reliability has a glass ceramic layer, two spiral internal conductors facing each other and sandwiching the glass ceramic layer in between, and insulation layers sandwiching the two internal conductors, wherein the glass ceramic layer contains segregated Al regions and the maximum dimension t₁ of each segregated Al region in the glass ceramic layer, in the layer-thickness direction, is no more than 80% of the distance t₀ between the two internal conductors.

In the transformer, line side windings connected in star type continuous form is adopted in inner side. Structure of outer side is three groups divided, N groups phase shifted cake typed line side windings. The invented transformer solves issues of harmonic polluting on power grid and harmonic wastage, possessing advantages: reliable operation, simple maintenance, small harmonic current at power grid side, low noise, low heat generated, high power factor. When being applied to high voltage frequency control, the invention solves issues: heating of motor, torque ripple, influence of dv/dr and common mode voltage on insulation of motor. The invention can reaches ideal effect of harmonic elimination even if out of balanced currents occurred, providing advantages of approximate to sinusoidal waveform output, high conversion efficiency etc.

The invention discloses a foaming composition for a water tank of a solar water heater, which is characterized by comprising the following main raw materials: a polyether foaming agent, sodium bicarbonate, chitosan and hollow glass beads. The improved polyether rigid foam composition can be used for reducing the phenomena that after being sprayed from a glossy jar and formed, a polyurethane material has high contractibility, the heat preservation effect of the water tank of the solar water heater is influenced and the water tank is deformed, bulged and barred, or even cracked.