56results 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.

A padlock comprises a lock body, a shackle, a combination locking device and a key locking device. The shackle is movable relative to the lock body between a locked position and an unlocked position. The combination and key locking devices are installed within the lock body respectively for controlling movements of the shackle. Additionally, the combination locking device has a frame for receiving a first end of the shackle and a combination unit connected to the frame, which is movable when the combination unit is unlock whereby a second end of the shackle is movable to the unlock position. Furthermore, the key locking device comprises a block unit for locking the first end of the shackle and a key unit connected to the block unit, which is movable when the key unit is unlocked by a key.

The invention relates to a line fault identification method using polar fault current principle component cluster analysis, and belongs to the technical field of DC power transmission line protection. A batch of line metallicity grounding faults and line external faults are preset from near to far within a full-line-length scope, the sampling rate is 10kHz, a line fault curve of a fault current curve cluster of a measurement end is obtained through electromagnetic transient simulation, after the fault current curve cluster is subjected to normalization processing with a mean value of 0 and a variance of 1, principle component analysis (PCA) is carried out, a PCA space is formed, two clustering point clusters reflecting the line faults and the external faults are formed in the PCA space, a projection ot (q1, q2) of test sample data on a PC1-PC2 coordinate axis of the PCA cluster space is calculated, and distances between the test sample data and the cluster centers of the current curve clusters are measured by use of Euclidean distance so that the line faults are identified.

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 provides a semiconductor apparatus and method for manufacturing the semiconductor apparatus. The semiconductor apparatus includes a first semiconductor layer formed on a substrate, a second semiconductor layer formed on the first semiconductor layer, a gate recess formed by removing at least a portion of the second semiconductor layer, an insulation film formed on the gate recess and the second semiconductor layer, a gate electrode formed on the gate recess via the insulation film, source and drain electrodes formed on one of the first and the second semiconductor layers, and a fluorine containing region formed in at least one of a part of the first semiconductor layer corresponding to a region in which the gate recess is formed and a part of the second semiconductor layer corresponding to the region in which the gate recess is formed. The normally closed characteristic is obtained according to the semiconductor apparatus, and the yield of the semiconductor apparatus is improved, and the stable operation is realized.

The boiler cleaning apparatus and method provides for cleaning the exterior surfaces of a heat exchanger. The apparatus and method include tools and steps, respectively, for temporarily spreading tubes and holding open the tubes to gain access to tube lanes. Once access to a lane is attained, a nozzle assembly having an outlet for blowing high velocity cleaning fluid is selected from a group of nozzle assemblies. The selected nozzle assembly will have an outlet for blowing fluid in a direction that effectively cleans the tubes adjacent the opened lane. After the tubes are cleaned the tool for holding the lane opened is removed and the process is repeated for another lane.

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).

This switch is composed of a contact mechanism 10 wherein the movable contact 15a of a movable contact piece 15 is made to face a stationary contact 13a so that they can be brought into contact with each other or separated from each other, a base 20 wherein the contact mechanism 10 is insert-molded, an operating lever 40 having an operating part 41 projecting toward its side from one end side and an operating rib 42 protrusively provided on its lower surface, which is slidably assembled to the upper part of the base 20, a reset spring 50 positioned on the base 20, and a cover 60 engaged with the base 20. The operating lever 40 slides against spring force of the reset spring 50 based on external force loaded to the operating part 41 of the operating lever 40 from a horizontal direction, and the operating rib 42 of the operating lever 40 pushes down the movable contact piece 15 to open and close the contact.

The invention relates to an under-voltage tripper circuit for a miniature circuit breaker. The under-voltage tripper circuit for the miniature circuit breaker comprises a power supply circuit, and is characterized by also comprising an under-voltage detection and control circuit and a tripping circuit, wherein the power supply circuit, the under-voltage detection and control circuit and the tripping circuit are connected in sequence. The under-voltage detection and control circuit consists of a voltage detector U1, a resistor R4, a resistor R5, a resistor R6 and a capacitor C2; the voltage detector U1 is connected with the resistor R5 in series after being connected with the resistor R4 in parallel; the resistor R6 and the resistor R5 are connected in series; the anode of the capacitor C2 is connected with one end of the resistor R6; the cathode of the capacitor C2 is connected with the negative electrode of silicon controlled D6 in the tripping circuit; the other end of the resistor R6 is connected with a control electrode of the silicon controlled D6 in the tripping circuit. The under-voltage tripper circuit for the miniature circuit breaker provided by the invention has the advantages that the working temperature rise of a tripper is reduced, the fluctuation range of an under-voltage protection threshold value is small, the power consumption is low, the operating characteristic is stable, the circuit design is simple, the EMC (electromagnetic compatibility) resistance is strong, and the reliability is high, and more meets the actual demand of the under-voltage tripper for the miniature circuit breaker.

This armature core for a rotary electric machine is configured such that: a shoe is provided as a separate component from magnetic pole teeth; a shoe component is provided by laminating a plurality ofcore pieces; a shaft section is provided to the tips of protrusion sections of the magnetic pole teeth; the shoe component is provided with the shaft section or a long hole; the magnetic pole teeth and the shoe component are connected by fitting the magnetic pole teeth and the shaft section of the shoe component to each other or by fitting the shaft section and the long hole; and the shoe component can slide in a direction perpendicular to the protrusion direction of the magnetic pole teeth by moving along the shaft section and the long hole, and after sliding, can rotate around the shaft section serving as a rotation axis.

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.