54results about How to "Good operating characteristics" patented technology

The invention discloses PTC graphene heating printing ink and a preparation method thereof. The PTC graphene heating printing ink is prepared from the following components in percentages by mass: 50% to 70% of a binder, 9% to 21% of a solvent, 1% to 3% of an additive, 10% to 20% of a conductive filler and 5% to 20% of a PTC functional material. The preparation method comprises the following steps: (1) firstly stirring and dispersing the binder, the solvent and the additive for 20 to 30 min, then adding the PTC functional material into stirring equipment for stirring for 8 to 12 min, and finally adding the conductive filler for uniform stirring to obtain a coarse paste; and (2) carrying out four to six times of three-roller grinding on the coarse paste so as to obtain the PTC graphene heating printing ink. The invention also discloses a heating film. The heating film comprises an organic polymer base material film, the PTC graphene heating printing ink, a conductive silver paste, conductive copper foil and an organic polymer adhesive film. The PTC function of the graphene heating film is increased, the potential safety hazard problem of an existing graphene heating film is eliminated, and the practicability is improved.

The invention discloses a high-frequency break variable distance protection method of a flexible DC power distribution system. The protection method comprises the following steps of 1, analyzing high-frequency fault characteristic when a bipolar short-circuit fault occurs in a photovoltaic access-containing flexible DC circuit with regard to the photovoltaic access-containing flexible DC circuit,and deriving transient high-frequency impedance of the system during a fault; 2, analyzing distribution characteristic of a voltage high-frequency fault component in the system during short circuit atdifferent positions, thereby obtaining a high-frequency break variable distance protection principle; and 3, analyzing influence of different circuit structures on high-frequency measurement impedance with regard to the problem of difficult in setting and matching of protection in the DC system, and performing protection configuration and setting calculation on the system.

The invention relates to a minitype breaker with high stability, which comprises an operating mechanism; the operating mechanism comprises a pivotal shaft fixed on a shell; the pivotal shaft comprises a first shaft section, a second shaft section and a shaft shoulder; the diameter of the second shaft section is larger than that of the first shaft section; and the diameter of the shaft shoulder is larger than that of the second shaft section. A lever is installed on the first shaft section through a first shaft hole in a pivoting way and used for limiting the axial position of a boss table relative to the pivotal shaft through contact coordination between the boss table arranged on the lever and a thrust table arranged on the second shaft section. A buckle is installed on the second shaft section through a second shaft hole in a pivoting way; a first end face matched with a support surface on the shaft shoulder is arranged at one end of the second shaft hole; and a second end face matched with the boss table is arranged at the other end of the second shaft hole. A first hasp matched with a second hasp arranged on the buckle is arranged on a connecting rod, the connecting rod is meshed with the buckle when the first and second hasps are contacted and buckled with each other, and the buckle controls a drive rod and the lever not to move relatively; and the connecting rod is separated from the buckle when the first and second hasps are separated and unbuckled, the buckle is separated from the drive rod to lead the drive rod to slide along a groove in the lever.

Provided is a linear actuator, which does not generate a positional shift between an inner core and an outer core, has stable characteristics, and is easily assembled. This linear actuator is provided with an inner core (2), and an outer core (3), which is provided outside of the inner core (2) in the radius direction of the inner core, while being supported by means of a pair of plate springs (41, 42). Permanent magnets (23, 24) are provided on one core out of the inner core (2) and the outer core (3), and magnetic pole sections (31a, 32a) are formed on the other core out of the inner core (2) and the outer core (3), said magnetic pole sections facing the permanent magnets (23, 24) with a predetermined gap therebetween. Spacers (71, 72) are respectively provided between the inner core (2) and the plate springs (41, 42), contact portions are configured by bringing the facing surfaces into contact with each other in the axis direction, said facing surfaces being those of the spacers (71, 72) and the inner core (2), and those of the spacers (71, 72) and the plate springs (41, 42) adjacent to the spacers (71, 72). A plurality of engaging sections configured of recessed portions and protruding portions are provided on each of the contact portions.

The present invention aims to provide an alignment film that prevents deterioration due to impurity ions in liquid crystal, and a liquid crystal display using the alignment film. The alignment film 10 of the present invention provides an alignment film composed of a resin composition comprising a polyimide resin or a polyamide resin and a low molecular weight thermosetting resin having a viscosity of 1 to 3000 poise at 25°C. The impurity ions 14 in the liquid crystal 12 are prevented from reaching the pixel electrodes 16 by using the alignment film 10 in which the monomer thermosetting resins are mixed. The liquid crystal display of the present invention provided with this alignment film has improved retention characteristics in a reliability test, and is excellent in operating characteristics even when a liquid crystal with high dielectric anisotropy is used.

The invention discloses a radial series rotating motor, comprising a rotor, and a stator, where each magnetic component with connecting seat whose cross section has two side walls about facing radial air gap, and plural permanent magnets are arranged on the inside surfaces of two sides of the connecting seat to form two magnetic poles of the magnetic component; and radial adjacent rotor wheel rings are adjacent and share a shared side wall of magnetic conduction material, further increasing magnetic flux distribution density to improve high efficiency and high output of the rotating motor.

The invention relates to a self-synchronizing trigger high capacity discharging gap applied to a high voltage system; an impedance device 6 synchronously tracks voltage at two ends of a main discharging gap 5, the main discharging gap is instantaneously broken down by plasmas, free electrons and ultraviolet light generated through the pre-discharging of a triggering gap 7 serially connected with the impedance device under the set voltage, and thus the purpose of rapid connection of a circuit or over voltage protection is achieved. The self-synchronizing trigger high capacity discharging gap has the positive effects that: 1, the voltage at two ends of a triggering electrode is taken from the autonomous discharging gap, extra triggering control systems are not required, the cost and complexity of the device are greatly reduced, and the device reliability is enhanced; 2, the triggering gap is positioned at an arc blind area of the main discharging gap, the triggering operation voltage is not changed due to arc ablation of the main discharging gap, so that the device can be used for many times, and the basic stabilization of operation characteristic can be maintained; 3, the distances of the main discharging gap and the triggering gap are convenient to adjust, and requirements for different protection characteristics can be satisfied.

Power distribution network inverse time limit overcurrent protection comprises three parts: a distributed power distribution system, a communication system and low-voltage acceleration inverse time limit overcurrent protection. The invention provides a low-voltage acceleration inverse time limit overcurrent protection cooperative scheme. The low-voltage acceleration inverse time limit overcurrent protection is applied to a distribution network with DG so as to accelerate the action time of the inverse time limit overcurrent protection, especially to improve the action time to protect the outlet failure, to eliminate the influence of low-voltage acceleration factor on the action time limit, to ensure the cooperation of the upper and lower protection action time limit. The implementation of the program can effectively improve the cooperative characteristic of the action characteristics and protection of the application of the inverse time limit overcurrent protection in a microgrid, and has a good application value.

The invention discloses a two-stage series gap lightning flashover protector with a discharge counter. The two-stage series gap lightning flashover protector with the discharge counter comprises a protector body and an arc suppressing electrode, wherein a support regulating board is connected with the lower end of the protector body, and a support board is connected with the outer end of the support regulating board; a counter fixing board is mounted at the lower end of the support regulating board and is provided with the discharge counter; an insulating block is mounted at the joint of the support regulating board and the protector body, and leads are connected between the protector body and the discharge counter and pass through the insulating block. The two-stage series gap lightning flashover protector with the discharge counter is connected with the ground through a natural body, the mounting is facilitated and simplified and is reliable, the performance characteristic is excellent, and the discharge is stable. The two-stage series gap lightning flashover protector with the discharge counter does not bear system voltage and system operating overvoltage, so that the reliability is increased, the service life is prolonged, and the maintaining cost is reduced.

This invention provides a temperature fuse, in substrate based temperature fuses, shortening distance between welding position of fuse element on film electrode and joint part of lead conductor to achieve minimization of the main body. Thus, fuse elements (3) are thoroughly welded on the film electrodes (a, b), lead conductors (A, B) are combined with the film electrodes (a, b) via soft soldering process, meltdown solder for soft soldering process or immerged extending isolation barriers (6a, 6b) for fuse element welding process are disposed between the welding position on each of the film electrodes (a, b) and soft soldering joint of the lead conductors.

This invention relates to an earth faulty distance protection technology of high voltage transmission line, which is an adaptive earth direction impedance relay taking the residual voltage Uo at the faulty protection installation place as the polarized volume, which not only has the strong ability of bearing the transient impedance, but also has the advantage of protecting residual component.

The invention provided a push-on switch of two stage operation in which a first and a second switches are switched on by pushing operation, in which a movable contact plate is fixed to a circuit board by a pressure-sensitive adhesive tape without deteriorating the operation property of the movable contact plate made of a metallic spring plate. A spacer 20 is arranged at the surroundings of a movable contact plate 1 on a circuit board 8, and by this spacer 20, a continuous or a non-continuous tape pasting surface 21 which is lower than the crown part of a central plate part 3 and higher than a surrounding plate part 2 is formed on the surroundings of the movable contact plate 1, and pasting of the pressure-sensitive adhesive tapes 9, 19 on the surrounding plate part 2 is prevented. The adhesive tape 19 has non-pasting parts 27, 27 at least at a location opposed to the surrounding plate part 2 between the connecting portion to the connecting plate parts 4, 4 of the surrounding plate part 2 of the movable contact plate 1, and thereby, even if the adhesive tape 19 contacts the surrounding plate part 2 at the switching on of the first switch, it is prevented that the adhesive tape 19 is pasted to the surrounding plate part 2.

Provided is an electromagnetic relay having stable operating characteristics and of which a moving iron rapidly enters a stable state. Thus, the electromagnetic relay comprises a gate-shaped iron core (30), a moving iron (40), and a card (50), and drives a contact mechanism (60) by means of pressing the card (50) by means of the moving iron (40) rotating on the basis of the excitation and degaussing of an electromagnet (20). In particular, a shallow groove (33), which is a magnetic flux density reducing means, is provided to at least one facing surface of the facing surfaces of one leg (32) of the gate-shaped iron core (30) and the rotational shaft (43) of the moving iron (40).

The invention relates to a closed loop verification system and method for a lunar landing and taking off control system, particularly relates to the closed loop verification system and method for thelunar landing and taking off control system with a variable thrust engine, and belongs to the technical field of ground verification of space vehicles. According to the method, simulation of an orbitand attitude control engine is conducted through two working manners of digital simulation and entity simulation, engine signals are collected by a dynamic computer to achieve dynamic driving during the lunar landing and taking off process and provide position and attitude information for on-board equipment, and therefore a closed loop is achieved; the two working manners can be switched accordingto ground verification demands. The closed loop verification method is adopted by the ground verification of a GNC sub system of on-board combination of the third phase of lunar exploration, and a better effect is achieved in the process of systematic closed loop verification; the closed loop system plays an important role in the processes of system fault recognition, regression testing and problem rapid searching and positioning, and the authenticity, sufficiency and testing efficiency of ground verification are improved.