38 results about "Liquid dielectric" patented technology

A metal automatic processing machine tool operation state prediction system of the present invention belongs to the technical field of automatic processing, and comprises a data acquisition module used for acquiring multi-scale physical parameters representing the machine tool operation state in real time, the multi-scale physical parameters comprise a structure thermal gradient tensor, a kurtosis change rate of a tool interface signal, a relative fluctuation value of a cooling liquid dielectric constant and an environment low-frequency seismic noise spectrum; the dynamic instability risk coupling module is used for determining a harmonic locking risk index based on the multi-scale physical parameters acquired by the data acquisition module; and the risk level evaluation module is used for determining a current system operation risk level based on the harmonic locking risk index determined by the dynamic instability risk coupling module and generating a normalized risk evaluation index.

An immersion-cooling container for single-phase liquid dielectric immersion cooling. The container has a tank and a liner, which mate together to form a sealed inflow channel and one or more sealed outflow channels. The liner and the support base comprise one or more vents to permit passage of dielectric liquid to envelop and cool equipment disposed inside the container. The liner sidewalls define one or more flow channels that promote passage of the liquid coolant from the container and into the outflow channels, thereby enabling continuous circulation of the dielectric liquid.

The invention discloses a soft electrostatic torsion driving unit and method and a driver, the soft electrostatic torsion driving unit comprises an output part, a torsion deformation structure and a driving base which are connected in sequence, the torsion deformation structure comprises an elastic element and a flexible electrode, and the driving end and the driven end of the flexible electrode are relatively twisted by a set angle; the driven end of the flexible electrode is connected with the output part, and the driving end of the flexible electrode is connected with the driving base; two ends of the elastic element are respectively connected with the driving base and the output part, a conductive layer and an insulating layer are arranged on the driving base, and the active end of the flexible electrode is arranged above the insulating layer; a liquid dielectric output device is arranged in the driving base, an outlet of the liquid dielectric output device is located at the edges of the conducting layer and the insulating layer, and the elastic element is in a pre-tightening state; the invention has the advantages of compact structure, high driving efficiency, high response speed and large torsion angle, and can provide a new technical solution for the design of a complex flexible driving device.

The invention discloses a modeling method for a streamer discharge process in natural ester insulating oil by considering ionization in bubbles. The modeling method comprises the following steps: 1) constructing a two-dimensional non-axisymmetric model for simulating discharge of bubbles to streamers in the natural ester insulating oil under lightning impulse voltage; 2) introducing a plasma chemical reaction, and constructing a natural ester insulating oil stream discharge electrohydrodynamic model coupled with an ionization process of gas molecules in bubbles; and after a set voltage is applied to the two-dimensional non-axisymmetric model, the natural ester insulating oil streamer discharge electro-hydrodynamic model simulates a natural ester insulating oil streamer morphology evolution process. According to the method, the drift-diffusion-reaction process of the plasma in the bubble and the Poisson equation are subjected to self-consistent solution, and the plasma generation process in the bubble under the strong electric field is integrated into the existing streamer discharge model, so that the method is beneficial to understanding the liquid dielectric breakdown theory.

The present invention relates to a specific combination of esters, a composition comprising it, and its uses as a lubricant and / or liquid dielectric coolant.

The invention discloses a method and device for treating garbage malodorous gas through gas-liquid dielectric barrier discharge coupled catalysis, and the device comprises a low-voltage electrode which is cylindrical and is vertically arranged, the lower part of the low-voltage electrode is provided with a gas inlet and an absorption liquid outlet, and the upper part of the low-voltage electrode is provided with an absorption liquid inlet and a gas outlet; the high-voltage electrode is located at the axis of the low-voltage electrode; the blocking medium is attached to the inner wall of the low-voltage electrode; the absorption liquid distributors are annular and located at different heights of the inner wall of the blocking medium, alkaline absorption liquid is introduced into the absorption liquid distributor at the top layer through an absorption liquid inlet, and a flowing liquid film from top to bottom is formed on the inner wall of the blocking medium under redistribution of the absorption liquid distributors; and the catalyst bed layers are arranged between the barrier medium and the high-voltage electrode and are distributed at intervals along the axial direction of the high-voltage electrode. Chemical absorption, plasma and heterogeneous catalysis are coupled in the same space, the malodorous gas degradation efficiency is improved, meanwhile, the treatment cost of dielectric barrier discharge plasma is reduced, and secondary pollution caused by ozone is reduced.

The present invention provides an actuator that can easily adjust the electrostatic stress acting between electrodes. [Solution] The actuator comprises an insulating flexible bag that forms a housing, a liquid dielectric filled inside the flexible bag, a plurality of electrodes arranged on the inner circumferential surface of the flexible bag whose separation distance changes according to the applied voltage, an expansion section in which the liquid dielectric present between the electrodes flows in and expands in volume when the separation distance between the electrodes decreases, and a separator inserted between the electrodes. The separator is in the form of a film with its front and back surfaces facing the electrodes and has through holes that penetrate in the thickness direction. As a result, the applied voltage is directly applied to the capacitor portion where only liquid dielectric is filled between the electrodes, and by adjusting the relative permittivity of the liquid dielectric, the amount of charge induced between the electrodes can be adjusted accordingly.

The application discloses a kind of embedded patterned resistive film's laminated transparent stealth superstructure and preparation method, belong to transparent electromagnetic stealth structure technical field.Embedded patterned resistive film's laminated transparent stealth superstructure, including patterned wave-absorbing layer, dielectric layer, frame, frame sealing plate and reflective back plate.Patterned wave-absorbing layer includes N layer patterned conductive film and N layer support substrate.Support substrate is placed below patterned conductive film.Patterned conductive film includes patterned conductive material and substrate.Conductive material is patterned on the surface of substrate.Forming.By customizing N layer optically transparent frequency selective surface conductive film geometric pattern, realize laminated multi-frequency point resonance, adopt multi-layer frequency selective surface laminated interface resonance loss wave absorption.Dielectric layer includes N+1 layer transparent dielectric, by transparent liquid material solidification forming.Preparation method uses embedded patterned resistive film and liquid dielectric layer frame mold solidification manufacturing process, so that transparent stealth superstructure is not easy to delaminate, and mechanical reliability is high.

Methods and techniques are provided for using a conductive epoxy to create interconnects across a gap between an embedded integrated circuit chip and a dielectric substrate. The chosen epoxy is adhesive and thixotropic so that it sticks well and won't lose its volume after a drying process. Further, a liquid dielectric ink is used as an underfill material to not only cover and protect the interconnects but also act as a dielectric layer. This allows as for additional dielectric layers with corresponding interconnects and vias to form a multilayer structure with additional embedded chips. The disclosed methods and techniques can be implemented using direct print additive manufacturing processes.

The present application belongs to the field of insulation test, and relates to a plant oil paper composite insulation electrical performance test device and method. The test device comprises an upper section test oil tank and a lower section oil storage oil tank. A support frame is fixedly installed inside the upper section test oil tank, and an electrode device is fixedly installed on the support frame. The electrode device comprises a windowed insulation paper board, two voltage grading rings and an electrode. The electrode is a copper conductor with insulation, which is bent into a T-shaped hanger shape. The test method comprises the following steps: press the plant insulation liquid dielectric from the lower section oil storage oil tank into the upper section test oil tank through a connecting pipe until the electrode device is covered; simulate the change of the electrode gap, i.e. the oil gap, by adjusting the distance between the long oval circles of the electrode; simulate the change of the turn insulation specification by changing the thickness of the insulation paper of the electrode; and realize the test under different operating conditions. The test device is convenient to disassemble and oil injection, strictly controls a single variable, and reduces the influence of the oxidation degree of the insulation oil and impurities on the test.

The application discloses application of an active double-mode microwave micro-flow sensor to liquid dielectric constant detection. The double-mode resonant unit is formed by a microstrip line and a split ring resonator, and has high and low resonant frequency points. The low-frequency resonant frequency point moves to a low frequency with the increase of the dielectric constant, and the high-frequency frequency point moves to a high frequency with the increase of the dielectric constant, thereby effectively increasing the sensitivity of the passive resonant unit. A negative impedance circuit is embedded at the rear end of the microwave passive sensor to form an oscillator, namely a microwave passive resonator and a radio frequency amplifier, and the oscillation frequency changes with the change of the dielectric constant of the material to be detected, and the change of the dielectric constant is mapped to the change of the oscillation frequency. The relationship between the dielectric constant and the resonant frequency is converted to the relationship between the dielectric constant and the direct current voltage through a demodulation circuit. The application has the advantages of high sensitivity, low price, convenience for carrying, etc., and is a high-performance and low-cost system-level detection device which will play an important role in the detection field of liquid materials.

The embodiment of the application relates to the measurement technical field for diagnostic purposes, in particular to an intracranial hemorrhage detection device, which comprises a containing part, a base, a flexible headgear and a signal emission and collection assembly. The containing part is arranged on the base; the containing part forms a containing space for containing a patient's cranium; the flexible headgear is arranged in the containing space and is arranged to be capable of filling liquid dielectric and capable of being deformed after being pressurized; the signal emission and collection assembly is used for emitting microwave signals to the flexible headgear and receiving microwave signals from the flexible headgear; wherein the base is arranged to be capable of discharging the leaked liquid outward when the liquid dielectric leaks. The embodiment of the application is arranged to have the flexible headgear, which is beneficial to improving the transmission efficiency of the microwave signals; and when the liquid dielectric leaks, the leaked liquid can be discharged outward, so that the leaked liquid dielectric cannot cause mildew or cause pollution to the signal emission and collection assembly.

The present invention discloses a soft electrostatic torsion drive unit, method and driver. The soft electrostatic torsion drive unit includes an output part, a torsion deformation structure and a drive base connected in sequence. The torsion deformation structure includes an elastic element and a flexible electrode. The active end and the driven end of the flexible electrode are torsionally set at an angle relative to each other. The driven end of the flexible electrode is connected to the output part, and the active end of the flexible electrode is connected to the drive base. The two ends of the elastic element are respectively connected to the drive base and the output part. A conductive layer and an insulating layer are provided on the drive base, and the active end of the flexible electrode is provided above the insulating layer. A liquid dielectric output device is provided in the drive base, and the outlet of the liquid dielectric output device is located at the edge of the conductive layer and the insulating layer, and the elastic element is in a pre-tightened state. The present invention has the advantages of compact structure, high driving efficiency, fast response speed and large torsion angle, and can provide a new technical solution for the design of complex flexible driving devices.

Nanoparticle compositions with enhancing dispersibility and long-term stability that can increase thermal conductivity of a dielectric fluid and improving insulation material lifetime, methods of manufacturing the nanoparticle compositions, and dielectric nanofluid compositions with the nanoparticles are provided herein. The nanoparticle compositions may include a metal oxide core and an organofunctional silane shell covering the TiO2 core, wherein the organofunctional silane shell is a structure represented by R1—Si(OR2)3.

The present invention relates to the technical field of electrical equipment maintenance design, and particularly to a method and related device for measuring the electric field of liquid dielectrics in a confined space. The method includes: setting the angle of the laser entering the reflection cavity, as well as the incident port and the exit port, so that the laser undergoes multiple reflections in the reflection cavity to extend the optical path length. An optical detector and a laser generator are respectively arranged at the exit port and the incident port, and a polarizer and an analyzer are arranged outside the exit port and the incident port. After placing the reflection cavity in the liquid dielectric with an unknown electric field applied, the electric field strength is obtained by substituting the incident light intensity, the exit light intensity, the optical path length, and the Kerr constant of the liquid medium into the electric field strength model. The design of the cylindrical tube reflection cavity enables the propagation path of light in the liquid dielectric electric field to satisfy the optical path length, so that when calculating the electric field strength, the influence of the Kerr constant with an extremely small order of magnitude on the result can be reduced with a longer optical path length, reducing the error of electric field measurement and improving the safety and reliability of electrical equipment design and operation and maintenance.

This application relates to the technical field of reactive power compensation, disclosing a reactive power compensation method, system, and storage medium based on an asynchronous motor and a capacitor. The method involves placing a liquid dielectric capacitor next to the asynchronous motor, connecting it to the starting circuit during startup, opening the injection and return solenoid valves, and adjusting the dielectric injection speed in a positive correlation with the motor speed. Once the injection volume reaches the target or startup is complete, injection stops and the state is switched. Injection can be adjusted by cooperating with a hydraulic coupler and a dielectric pump, or the motor can be reversed / linked with an air pump to recover the dielectric during shutdown. Alternatively, the opening and closing degree of the solenoid valve can be adjusted in a positive correlation with the target flow rate, and the return gas pipe pressure can be adjusted in a negative correlation with the target gas flow rate, or the coupling degree of the hydraulic coupler, the opening and closing degree of the solenoid valve, and the height of the return gas pipe inlet can be adjusted in a negative correlation. This method achieves harmonic-free soft start, power factor compensation to 1, avoids the risk of self-excitation during shutdown, simplifies the structure, and has low energy consumption.

The energy conversion device includes liquid dielectric as a capacitor. The energy of the liquid dielectric capacitor is consumed inside the capacitor for use in engines, welding, or producing buoyancy gas, or consumed outside the capacitor for use as an on-board capacitor for a vehicle. The liquid dielectric capacitor is considered a dielectric breakdown-inducing igniter as an alternative to the conventional spark plug. In order to utilize the principle of this igniter as an energy source for an engine, a welding device or a gas production device for a buoyancy bag used to lift off seabed resources, an electric charge is applied to a liquid dielectric thin layer, then the thickness of the liquid dielectric thin layer is brought close to zero to cause dielectric breakdown, or the thickness of the liquid dielectric thin layer is increased to create a high voltage source for an on-board capacitor for a vehicle.

The invention relates to the technical field of reactive compensation, and discloses a reactive compensation method and system based on an asynchronous motor and a capacitor and a storage medium, and the method comprises the steps: arranging a liquid dielectric capacitor beside the asynchronous motor, connecting a starting loop during starting, opening an injection and air return solenoid valve, and adjusting the dielectric injection speed according to the positive correlation of the rotating speed of the motor; after the injection amount reaches the standard or starting is completed, injection is stopped, and the state is switched. Injection can be adjusted through cooperation of the hydraulic coupler and the dielectric medium pump, or the motor is controlled to rotate reversely or the inflation pump is linked to recycle the dielectric medium during shutdown; the opening degree of the electromagnetic valve can be adjusted according to positive correlation of the target flow speed, the compression degree of the gas return pipe can be adjusted according to negative correlation of the target gas flow speed, or the coupling degree of the hydraulic coupler, the opening degree of the electromagnetic valve and the gas inlet height of the gas return pipe can be adjusted according to negative correlation. According to the method, non-harmonic soft start is realized, the power factor is compensated to 1, the shutdown self-excitation risk is avoided, the structure is simplified, and the energy consumption is low.

Liquefied natural gas has brought about energy hegemonism and environmental destruction. This liquefied natural gas is, however, a liquid dielectric which can be liquefied easily by applying pressure at room temperature, expands in volume by more than 250 times when vaporized, and has a relatively high dielectric constant and a relatively low withstand voltage. As a capacitor, this liquid dielectric is regarded; the energy of the liquid dielectric capacitor is consumed inside the capacitor for use in engines, welding, or producing buoyancy gas, or consumed outside the capacitor for use as an on-board capacitor for a vehicle. The liquid dielectric capacitor is considered to be a dielectric breakdown-inducing igniter as an alternative to the conventional spark plug. In order to utilize the principle of this igniter as an energy source for an engine, a welding device or a gas production device for a buoyancy bag used to lift off seabed resources, an electric charge is applied to a liquid dielectric thin layer, then the thickness of the liquid dielectric thin layer is brought close to zero to cause dielectric breakdown, or the thickness of the liquid dielectric thin layer is increased to create a high voltage source for an on-board capacitor for a vehicle. Thus, a world without environmental destruction is achieved.

The invention relates to the technical field of underwater bionic mechanical equipment, in particular to a sensing underwater bionic mechanical gripper and a manufacturing method thereof. The grabbing hand comprises a supporting assembly and three grabbing assemblies connected in parallel. Each grabbing assembly is composed of a supporting module, a driving module, a sensing module and a power supply control module. The supporting module is used for hinging the three hardened layers into a double-joint linkage structure through a pre-stretching elastic hinge layer; the driving module comprises two self-healing electrostatic hydraulic drivers which are both of elastic bag-shaped structures, liquid dielectric insulating oil is injected into the drivers, silver electrodes are arranged on the surfaces of the drivers, and the drivers are fixed to the elastic hinge sides between the hardened layers respectively. The sensing module is a customized porous conductive sponge sensor and is used for monitoring contact force; the power supply control module achieves power supply and cooperative control, and the supporting assembly fixes the grabbing assemblies and the power supply control module. According to the robot, rigid driving equipment is not needed, the self-repairing capacity and the real-time sensing function are achieved, the robot can adapt to the complex underwater environment, the grabbing stability is improved, and the cost is low.

An electro-hydraulic actuator includes a deformable shell defining an enclosed internal cavity and containing a liquid dielectric, first and second electrodes on first and second sides, respectively, of the enclosed internal cavity. An electrostatic force between the first and second electrodes upon application of a voltage to one of the electrodes draws the electrodes towards each other to displace the liquid dielectric within the enclosed internal cavity. The shell includes active and inactive areas such that the electrostatic forces between the first and second electrodes displaces the liquid dielectric within the enclosed internal cavity from the active area of the shell to the inactive area of the shell. The first and second electrodes, the deformable shell, and the liquid dielectric cooperate to form a self-healing capacitor, and the liquid dielectric is configured for automatically filling breaches in the liquid dielectric resulting from dielectric breakdown.

To provide a plasma generation antenna for preventing electric corrosion due to electric conduction.SOLUTION: An antenna includes two conductor elements 31, an insulator element 32 that insulates between the adjacent conductor elements 31, a capacitor element 33 electrically connected in series to the conductor element 31 and including a first electrode 33A connected to one of the conductor elements 31, a second electrode 33B connected to the other conductor element 31 and facing the first electrode 33A, and a liquid dielectric in a space between the first electrode 33A and the second electrode 33B, and a spacer member 34 between the first electrode 31A and the one conductor element 31 and between the second electrode 33B and the other conductor element 31. The conductor element 31 and the spacer member 34 are formed of different metals and an oxide film or a metal film formed of the same metal as the conductor element is formed on a surface of the spacer member 34.SELECTED DRAWING: Figure 2

The present invention discloses an artificial muscle based on hydraulic amplification self-repair electrostatic drive, which includes a drive module and a connection unit module; in the connection unit module, the top cover and the bottom cover are connected by the drive module and the support spring; a power jack is arranged on the outer circumferential surface of the bottom cover; in the drive module, both the outer elastic wrapping layer and the inner elastic wrapping layer are tubular structures, and a liquid dielectric is uniformly filled between the outer elastic wrapping layer and the inner elastic wrapping layer; compliant electrodes are arranged on the outer surface of the outer elastic wrapping layer and the inner surface of the inner elastic wrapping layer, and outer constraint fibers are uniformly arranged on the outer surface of the outer compliant electrode, and the circumferential positions of the outer compliant electrode and the inner compliant electrode respectively correspond to the positions of the power sockets on the circumferential surface of the bottom cover; the number of the inner compliant electrodes is the same as that of the outer compliant electrodes; the design of the regional distribution of the electrode layer and the voltage control drive mode enable the high-performance artificial muscle based on force-electricity-hydraulic coupling drive proposed by the present invention to achieve multi-mode deformation and precise and controllable deformation.

The present invention relates to an RF energy generation device for intravaginal use, the device including: a tube body unit which is made of an expandable dielectric film, inserted into the vagina of a woman, and filled with a liquid dielectric material; and an RF electrode unit which is located in the tube body unit so that the outer surface is in contact with the tube body unit, and which applies an RF electrical energy signal. The RF electrode unit located in the tube body unit inserted into the vagina applies the electrical energy while in contact with the dielectric film, thereby reducing pain during a procedure, and can efficiently transmit the RF electrical energy signal to the skin, thereby increasing the effect of the procedure and improving patient satisfaction during the procedure.

The invention discloses a liquid dielectric constant scalar measurement system based on a short-circuit transmission line, which comprises a controller, the controller is sequentially connected with a signal generator, a coupler and a measurement probe through transmission lines, the coupler is further connected with a detector a and a detector b through transmission lines, and the detector a and the detector b are further connected with the controller through transmission lines. The problems that in the prior art, a capacitance method is limited by the non-ideal diffusion characteristic of an actual polar plate edge electric field, the measured value is high, and the high-precision measurement requirement is difficult to meet are solved. The invention further discloses a liquid dielectric constant scalar measurement method based on the short-circuit transmission line.

An electro-hydraulic actuator includes a deformable shell defining an enclosed internal cavity and containing a liquid dielectric, first and second electrodes on first and second sides, respectively, of the enclosed internal cavity. An electrostatic force between the first and second electrodes upon application of a voltage to one of the electrodes draws the electrodes towards each other to displace the liquid dielectric within the enclosed internal cavity. The shell includes active and inactive areas such that the electrostatic forces between the first and second electrodes displaces the liquid dielectric within the enclosed internal cavity from the active area of the shell to the inactive area of the shell. The first and second electrodes, the deformable shell, and the liquid dielectric cooperate to form a self-healing capacitor, and the liquid dielectric is configured for automatically filling breaches in the liquid dielectric resulting from dielectric breakdown.

A flexible membrane container for thermal management of an electronic object, the flexible membrane container comprising a first flexible membrane defining a bag-like container having a first interior volume, the container having an opening for removably receiving an electronic object. At least one outflow conduit is disposed in fluid communication with the first interior volume, and at least one inflow conduit is disposed in fluid communication with the first interior volume, thereby enabling a liquid dielectric coolant from a source external to the flexible membrane container to enter into the first interior volume. An insert frame member having a header is configured for releasably attaching to the electronic object. The header provides controls and power connectivity for electronic communication with the electronic object.

This invention relates to the use of a combination of monohydric alcohol fatty acid esters and diesters as a liquid dielectric coolant.

A flexible membrane container for thermal management of an electronic object, the flexible membrane container comprising a first flexible membrane defining a bag-like container having a first interior volume, the container having an opening for removably receiving an electronic object. At least one outflow conduit is disposed in fluid communication with the first interior volume, and at least one inflow conduit is disposed in fluid communication with the first interior volume, thereby enabling a liquid dielectric coolant from a source external to the flexible membrane container to enter into the first interior volume. An insert frame member having a header is configured for releasably attaching to the electronic object. The header provides controls and power connectivity for electronic communication with the electronic object.

The invention discloses a coplanar waveguide-based liquid dielectric parameter measurement method and system, and the method comprises the steps: transmitting an initial high-frequency electromagnetic signal generated by an electromagnetic field excitation source to a to-be-measured liquid medium through a coplanar waveguide; acquiring a reflected electromagnetic signal after the initial high-frequency electromagnetic signal penetrates through the to-be-detected liquid medium and is reflected, and reversely transmitting the reflected electromagnetic signal to the electromagnetic field excitation source; according to the reflected electromagnetic signal, determining a target dielectric parameter of the liquid medium to be measured through an inversion algorithm and an iterative algorithm; and recording a measurement result of the target dielectric parameter for a user to check and record measurement data. The electromagnetic field distribution can be effectively controlled, the external interference is reduced, the stability of the measurement result is ensured, and the method has the advantages of high stability, wide applicability, simplicity and convenience in operation, low cost and the like.