171 results about "Liquid dielectric" patented technology

A system and method for generating power. The system has a first electrode member comprising a first region and a second electrode member comprising a second region. Preferably, the second electrode member is coupled to the first electrode member. An electret is coupled between the first electrode member and the second electrode member. The system has a spatial region provided between the first region of the first electrode member and the second region of the second electrode member. A volume of fluid (e.g., liquid, liquid and solids, gas and liquid, solids and gases) is provided between the first region and the second region and is adapted to move between the first region and the second region to cause a change in an electric field characteristic within a portion of the spatial region by the movement of at least a portion of the fluid within the portion of the spatial region to generate a change in voltage potential between the first electrode and the second electrode.

An electrical interconnect including a first circuitry layer with a first surface and a second surface. A first liquid dielectric layer is imaged directly on the first surface of the first circuitry layer to form a first dielectric layer with a plurality of first recesses. Conductive plating substantially fills a plurality of the first recesses to create a plurality of first solid copper conductive pillars electrically coupled to, and extending generally perpendicular to, the first circuitry layer. A second liquid dielectric layer is imaged directly on the first dielectric layer to form a second dielectric layer with a plurality of second recesses. Conductive plating substantially fills a plurality of the second recesses to form a plurality of second solid copper conductive pillars electrically coupled to, and extending parallel with, the first conductive pillars. An IC device is electrically coupled to a plurality of the second conductive pillars.

A liquid-gap electrostatic hydraulic micro actuator is provided that produces higher displacement (in and out of plane) and larger force than typical electrostatic actuators by utilizing a non-conducting liquid as its dielectric material. This new class of actuators utilizes the liquid dielectric for hydraulic amplification and force transfer. The liquid electrostatic actuator consists of two chambers each forming a parallel-plate capacitor, filled with a non-conducting incompressible liquid. One chamber is compressed by pulling down a flexible membrane using electrostatic actuation, thus forcing the liquid under it to transfer into the other chamber. Such movement causes the other chamber's membrane to expand out of plane.

The distribution transformer is installed in a station having N phases, at least N-1 phases being equipped on the high-voltage side of the transformer with respective current-limiting fuses capable of blowing in the event of a dead short circuit between the phases. The protection system comprises: at least one fault detector for detecting faults on the basis of at least one of the following indicators: pressure in the tank, level of the dielectric, or temperature of the transformer; a short-circuiter acting on all the phases situated upstream from the high-voltage windings, said short-circuiter being capable of being triggered by said fault detector to establish a dead short circuit between the phases; and on at least N-1 phases, a detector for detecting an abnormal current upstream from the transformer, said detector being associated with control means for controlling said short-circuiter. In the system, at least the phase that is not equipped with a limiting fuse is equipped with a disconnector switch which is normally closed in the absence of any fault, said disconnector switch being disposed on the high-voltage side of the transformer upstream from the short-circuiter, and opening thereof being triggered by the short-circuiter in the event of a fault, but with a certain delay.

The invention provides a composite of vegetable insulating oil and modified nano powder and application and preparation method thereof. The composite comprises vegetable insulating oil and nano powder, and the composite is used for preparing insulating oil. The preparation method includes the following steps: surface treatment is carried out on the nano powder; vegetable insulating oil subject to water removal and gas removal is mixed with the nano powder subject to surface treatment; the mixed insulating oil is subject to ultrasonic oscillation; and mixture obtained by oscillation treatment is added into a planet ball mill, and wet grinding is carried out. In the invention, nano powder is added into vegetable insulating oil, nano liquid dielectric medium can be formed, not only the dielectrical property of insulating oil can be improved, but also heat dissipation function of transformer winding coil can be improved; and the nano powder is far smaller than foreign particle in the insulating oil and can form stable sol system with the liquid dielectric medium, and a breakdown bridge can not be formed under the action of external electric field, thus improving the dielectrical strength of insulating oil.

The invention relates to a liquid dielectric constant measuring system self-adapting to scale and precision. The dielectric constant measuring system comprises a to-be-measured capacitor detector (1), a single-chip microcomputer (2) and an LED display. The single-chip microcomputer controls a switch circuit in the to-be-measured capacitor detector, an estimated value of the to-be-measured capacitor is acquired through a capacitor initial check circuit, a commutating and voltage-stabilizing circuit, and a low precision analog-digital converter in the to-be-measured capacitor detector and a corresponding computational formula, the estimated value is used to control a phase-locked loop to output a sampling lock with appropriate precision, then the state of the switch circuit in the to-be-measured capacitor detector is changed, the charging impulse of the to-be-measured capacitor is acquired through an RC charging and discharging subcircuit and a comparator circuit, the sampling clock is used to sample to acquire the charging time, and calculation is conducted to acquire the precise value of the to-be-measured capacitor, and finally, the dielectric constant of a corresponding liquid is obtained through calculation according to the structure of a measured electrode and the measured capacitance value and is displayed in the LED display.

The invention provides a composite of mineral insulating oil and modified nanometer powder as well as application and a preparation method thereof. The composite comprises mineral insulating oil and nanometer powder. The preparation method of the nanometer modified insulating oil comprises the following steps: carrying out surface treatment on the nanometer powder; mixing the dehydrated and degassed mineral insulating oil with the nanometer powder performed with surface treatment; carrying out ultrasonic oscillation on mixed insulating oil; and adding the oscillated mixture into a planetary ball mill, and processing by a wet milling process. The invention adds the nanoparticle powder into the mineral insulating oil to form nanometer liquid dielectric, improves the dielectric property of the insulating oil and can strengthen the cooling effect of a transformer winding coil; in addition, the nanometer powder is much smaller than impurity particles in the insulating oil, can form a stable sol system with a liquid medium and does not form a breakdownsmall bridge under the action of the external electric field so as to improve the dielectric strength of the insulating oil.

This disclosure relates to methods and systems to reduce high voltage breakdown jitters in liquid dielectric switches. In particular, dielectric liquids have been produced that contain a suspension of nanoparticles and a surfactant to reduce the breakdown jitter. In one embodiment, the suspended nanoparticles are Barium Strontium Titanate (BST) nanoparticles.

The invention discloses a solvent hot-liquid phase transforming method to synthesize superhard micro-nanometer material in the chemical and new material domain, which comprises the following steps: dispersing hexagonal boron nitride, graphite mold carbon nitride or graphite powder solid particle in the liquid dielectric organic solvent, proceeding ultrasonic dispersing disposal for suspension liquid, adding fitful addictive to reduce phase-transforming needed temperature and pressure, changing boundary energy condition between solid particle and liquid dielectric, accelerating the solid particle to change to needed material.

A semiconductor device 100 includes wiring layers 12 disposed in a specified pattern on a base 10, and an interlayer dielectric layer 20 that covers the wiring layers 12. The interlayer dielectric layer 20 includes a stress relieving dielectric layer 22 disposed in a specified pattern on the base 10, and a planarization dielectric layer 26 that covers the wiring layers 12 and the stress relieving dielectric layers 22, and is formed from a liquid dielectric member. The interlayer dielectric layer 20 may further include a base dielectric layer 24 and a cap dielectric layer 28.

The invention discloses a quick measuring device and a quick measuring method for space electric fields of a liquid dielectric medium, and belongs to the technical field of high voltage and insulation measurement. The method is a quick measuring technology for space transient electric fields of a liquid dielectric medium based on an electro-optic Kerr effect and a Mach-Zehnder interferometer. The quick measuring device consists of a He-Ne laser device, a beam expander, a polarizer, a quarter-wave plate, a Kerr box, a transient voltage generator, a polarization splitting prism, a depolarization splitting prism, a total reflective mirror, a half-wave plate, a CCD (charge coupled device) image sensor. The quick measuring method comprises the following steps: firstly, regulating a light path, and directly measuring interference fringes through the CCD image sensor, visually reflecting externally applied electric fields without being limited by back-end detecting equipment, thereby realizing quick measurement for transient electric fields and making up defects of an Kerr effect alternating-current modulating method in the transient electric field measuring filed.

The invention discloses an intelligent detecting and controlling system for chemical dangerous articles in highway bridge runoff. The intelligent detecting and controlling system comprises an intelligent detecting and controlling unit communicated with a bridge body water draining pipe outlet, wherein the intelligent detecting and controlling unit comprises a closed detecting water pond; a water inlet of the a detecting water pond is communicated with the bridge body water draining pipe outlet, a liquid trigger controlling switch is arranged at the water inlet of the detecting water pond, and a signal output interface of the liquid trigger controlling switch is connected with an industrial control computer signal input interface; a liquid dielectric constant detecting sensor and a liquid electrical conductivity detecting sensor are arranged in the detecting water pond, and a rain and snow detecting sensor are arranged on the outer side of the detecting water pond; a water outlet of the detecting water pond is communicated with a rainwater precipitating and discharging water pond and an accident leakage liquid collecting pond through pipelines and a drainage electronic control valve of which the opening and the closing are controlled by the industrial control computer separately. The intelligent detecting and controlling system has the advantages that the leakage of the chemical dangerous articles on a highway bridge is detected and controlled in an intelligent manner, so that damage to human safety and ecological environment safety caused by the leakage of the chemical dangerous articles on the highway bridge is effectively avoided.

The invention discloses a solid-liquid universal type thermal stimulus current measuring device. The device comprises a vacuum insulation barrel, fixed pillars, a lower electrode, an insulation sleeve, an upper electrode, a glass ring, an upper partition board, a lower partition board and a spring, wherein a measurement cavity is formed in the vacuum insulation barrel, a top cover is arranged on the top of the measurement cavity to seal the measurement cavity, a heater is arranged on the measurement cavity, a nitrogen inlet is formed in the measurement cavity, an exhaust port is formed in the top cover, and a cooling medium is arranged between the measurement cavity and the vacuum insulation barrel; the upper end of the fixed pillar is connected with the top cover, the lower electrode is connected with the fixed pillars, and the lower electrode is provided with a groove and a temperature sensor; a metal conductive core penetrates through the insulation sleeve, the upper electrode is connected with the metal conductive core and opposite to the lower electrode in the vertical direction, and the glass ring is placed in the groove and can be taken out; the upper partition board and the lower partition board are arranged in a vertically alternating mode and located above the upper electrode, and the spring is arranged on the outer side of the metal conductive core in a sleeving mode and located between the upper electrode and the lower partition board. The device can be used for measurement of both solid dielectric and liquid dielectric.