68results about How to "Avoid grounding" patented technology

Processing technique using plasma to process the surface of a sample such as semiconductor device. The phases of RF bias voltages applied to a substrate electrode and an antenna electrode opposed thereto are controlled to be opposite to each other so that either one of the electrodes is forced to always function as ground. Therefore, the current flowing to cross the magnetic field for controlling the plasma is decreased, and the potential distribution difference in the surface of the sample to be processed is reduced, so that the charging damage can be suppressed. Energy of ions incident to the sample to be processed can be controlled to perform high-precision etching. The plasma potential can also be controlled so that the strength of the ion impact to the inner wall of the chamber can be reduced, thereby reducing particles detached from the inner wall of the processing apparatus to improve the throughput.

An internal cavity structure of the push bar kiln used for preparing VN alloy is composed of internal cavity, cover plate, side wall and tracks. A push bar kiln is longitudinally and sequentially composed of the low-temp segment with 5 temp regions, the transition segment with 4 temp regions, the high-temp segment with 7 temp regions, and the cooling segment consisting of natural cooling region and forced cooling region. It features that different but proper refractories are chosen for different temp regions. Its internal cavity has 3 separated channels. The central channel is the kiln cavity and two side channels are isolated heating element ones.

A power cable assembly for use in a water and air-cooled welding assemblies for carrying power from a welding machine to a welding torch and either cooling water from the torch to a circulator reservoir or, in the case of air-cooled torches, shielding gas to the torch. The cable assembly includes a flexible outer conduit disposed about a flexible electrical conductor formed of a plurality of twisted, braided or bunched wires encased in a thin layer of flexible plastic material. A plurality of projections extend radially from the flexible encasement so as to space the electrical conductor from the interior conduit wall, thereby defining a water or gas-flow path extending entirely about the conductor to enhance the efficiency of heat removal from the conductor.

The invention provides an electric connecting device and a display device. The electric connecting device comprises a flexible circuit board, a connector and a pressure board, wherein the flexible circuit board comprises a main body, a plurality of first conducting terminals and stiffening plates; the connector comprises an insulating frame, a sliding slot structure and a plurality of second conducting terminals, and the sliding slot structure is provided with an opening. When the flexible circuit board is electrically connected with the connector, the first conducting terminals are respectively in contact with the second conducting terminals correspondingly, and the pressure board enters the sliding slot structure from the opening and slides along the sliding slot structure to press the flexible circuit board and the connector tightly. The electric connecting device and the display device can solve the problems that conducting terminals on the flexible circuit board are easy to form an electrostatic discharge loop and the connection between the flexible circuit board and the connector are easy to loose, and poor display of a display device, caused by poor contact, is prevented.

The invention relates to a precise adjustment auxiliary device for a track board of a high speed railway and an adjusting method thereof. The device comprises a support, a hydraulic jack and a base bolt, wherein the support comprises a support base and a support top plate, and a pit with balls placed inside is arranged on the upper surface of the base which stretches to the underside of the track board on one side; the hydraulic jack is placed in the base and on the balls, one end of the support top plate is placed at the top end of the hydraulic jack, and the other end contacts with the side of the track board; and the base bolt penetrates from the outside of the support base and abuts against the side of the hydraulic jack. During adjustment, the auxiliary device is arranged at each of the four corners of the track board; the support base is placed under the track board; the balls are placed into the base, and the base bolt is arranged; the jack is placed on the balls and raises the track board to facilitate horizontal displacement adjustment; the base bolt is rotated; the jack drives the support to prompt the track board to perform the horizontal displacement adjustment; the auxiliary devices are withdrawn after positioning; and adjustment for other track board is performed.

There is disclosed a vacuum switchgear, which comprises a vacuum container (10) to be earthed; a plurality of switches (58,60,62) disposed in the vacuum container. Each of the switches is so constituted that a movable electrode (176,194) supported by a movable electrode rod (168,170) and a fixed electrode (178,196) supported by a fixed electrode rod (180,198) are opposed to each other. One or more bus conductors (68,72) are connected to the movable electrode rod or the fixed electrode rod of each of the switches. Each of the switches comprises cylindrical insulating electrode shields (184,186) which are disposed around a conductive shield (182) surrounding the movable electrode and the fixed electrode. The insulating shield prevents scattering and adhere of metal vapor generated from the movable electrode and the fixed electrode.

The embodiment of the invention discloses a filter based on a half-wavelength resonator with a strip line structure and an antenna, and belongs to the technical field of communication. The filter comprises a half-wavelength resonator and a multiple layers of surface-mounted PCB dielectric plates, wherein the half-wavelength resonator is positioned on the PCB dielectric plate of the middle layer; the central position of the half-wavelength resonator is virtually grounded, and the half-wavelength resonator adopts alternating arrangement of hairpin line structures and comb line structures. In theembodiment of the invention, the filter is realized by adopting the low-loss tangent PCB dielectric plates, so that the development cost is reduced. The central position of the half-wavelength resonator in the filter is virtually grounded, so that the resonator is prevented from being grounded, and the problem of difficulty in accurately controlling the size of grounding in circuit processing issolved. The half-wavelength resonator in the filter adopt the hairpin line structures and the comb line structures, the miniaturized filter is realized by adopting the resonator with the strip line structure, and the hairpin line structures and the comb line structures are alternately arranged to realize half-wavelength coupling.

The invention relates to a natural environment simulator capable of producing fog by ultrasonic wave, belonging to the technical field of high-voltage line insulator performance testing equipment. The natural environment simulator comprises an artificial fog chamber; a wall feed-through sleeve is arranged at one side of the artificial fog chamber in a matching way; the bottom of the artificial fog chamber is provided with an assembling box in a matching way; the assembling box is internally provided with a fog generator and a fan in a matching way; the fog generator and the fan are connected with an external power line; the external power line is used for supplying power; a hook is arranged on the top of the artificial fog chamber in a matching way, and is used for fixing an insulator to be tested; and the fog generator is an ultrasonic fog generator. As the ultrasonic fog generator and the fan are used together, the fog inlet quantity of the artificial fog chamber can be effectively controlled, and the natural environment needed by a laboratory can be simulated; furthermore, the external screw-type wall feed-through sleeve is arranged at one side of the artificial fog chamber in a matching way, so that the creepage distance can be prolonged, the current is prevented from being in ground connection along a barrel wall, and the personal safety of workers can be improved; and the natural environment simulator is simple in structure, small in size, strong in operability, good in simulation fidelity and easy to move, and can be popularized, applied and implemented.

The invention relates to a high-voltage charged display locking device which comprises an electric filed energy acquisition module and a display control module, wherein the display control module comprises a display control unit and a wireless communication receiving unit; the electric field energy acquisition module comprises an electric field energy acquisition unit, a microcontroller and a wireless communication transmitting unit; the output end of the electric filed energy acquisition unit is connected with the power supply end of the microcontroller; the signal output end of the microcontroller is connected with the input end of the wireless communication transmitting unit; the electric field energy acquisition unit comprises an electric field energy acquisition wire, a rectifying circuit, a filter circuit, an energy storing circuit and a voltage-stabilizing circuit which are electrically connected in sequence; and one of two ends of the electric field energy acquisition wire, serving as the two input ends of the rectifying circuit, is suspended, and the other end of the electric field energy acquisition wire is connected to the surface of high-voltage equipment. The locking device has the advantages of safety in use, reliability in detection, capability of realizing normal work of the electric field energy acquisition module without a special power supply and high using value.

The invention discloses a bird's-nest device for a transformer substation. The bird's-nest device for the transformer substation comprises a clamp type mechanical arm, a rake type mechanical arm and a net bag supporting device. According to the bird's-nest device for the transformer substation, various bird's nests on electrical equipment in the transformer substation can be electrically detached, so that the drop of the reliability of power supply and the loss of electric quantity caused by power failure of the equipment can be avoided, the bird's nests at hidden parts of the equipment can be flexibly and effectively detached and cleaned, and weeds of the bird's nests can be ensured to prevent from drooping or dropping during the detaching and cleaning operations of the bird's nests, so that accidents of grounding, short circuit or trip of operating equipment of a power grid due to the weeds and bird damages can be avoided, the potential safety hazard endangering the operation of the power grid can be eliminated, and the extra-high voltage power grid can be ensured for safe and reliable operation.

The invention discloses a pressing block and a roof photovoltaic system comprising the same. The pressing block comprises a pressing plate and two side plates arranged on two opposite sides of the pressing plate; the two side plates are abutted against the same surface of the pressing plate, and a clamping groove is formed by the pressing plate and the two side plates in a surrounding mode; the outer side wall on one side, far away from the clamping groove, of the side plate is provided with a pressing piece used for pressing a photovoltaic module; the outer side wall on one side, far away from the clamping groove, of the side plate is provided with a clamping part used for clamping the photovoltaic module; the pressing piece is arranged close to the bottom of the clamping groove; and theclamping part is arranged close to the opening of the clamping groove. According to the pressing block, the upper surface of the photovoltaic module does not need to be perforated and damaged, so thata water leakage phenomenon is avoided, and the phenomenon that the photovoltaic module breaks down due to rainwater entering caused by the perforation is avoided; and the construction cost and the later maintenance cost are lowered, firmness and reliability are achieved, and the wind resistance is excellent.

The invention provides an electric vehicle capable of preventing the short circuit or grounding of a rotation motor even a side cover of the electric vehicle is damaged due to a side frame or one portion of the side frame is intruded into a shell due to the damage of the side cover. In a vehicle (10A) as the electric vehicle, a cover component (34) is arranged between a motor (12) and a side cover (18b) in a motor shell (18). Observing from the rotating shaft direction (X1, X2), the cover component (34) covers a coil end (52) and a portion of a motor rotor (14). In the condition, a first shortest distance (d1) between the motor rotor (14) and the cover component (34) along the rotating shaft direction (X1, X2) is set shorter than a second shortest distance (d2) between the coil end (52) and the cover component (34) along the rotating shaft direction (X1, X2) (d1<d2).

The invention provides a junction box comprising a box body and a rainproof portion. The rainproof portion is disposed on the top end of the box body. The rainproof portion extends from the rear side of the box body to the front side of the box body, and protrudes from the front side. The junction box of the invention comprises the rainproof portion, and the rainproof portion is disposed on the top end of the box body and extends out of the box body, so as to shield rainwater and prevent rainwater from dropping on the box body directly. Thus, water seepage and leakage of the box body are effectively prevented, and further, terminal grounding or short-circuiting caused by water flowing into the box body is prevented, and safe and stable operation of devices in a transformer station is ensured.

The invention relates to a shielding plate, a terminal module using the shielding plate and a female end connector, the shielding plate comprises a main body part, the front end of the main body part is provided with a convex hull, the convex hull is arranged on one side, facing a corresponding grounding terminal, of the main body part in a protruding mode, and the convex hull is used for being matched with a grounding elastic piece at the front end of the corresponding grounding terminal to clamp a grounding pin; the main body part is provided with a window or a kerf, and the convex hull is formed at the window or the kerf through integral stamping. Compared with the mode that a complete shielding plate is directly punched to form a full-surrounding convex hull, during machining, the window or the kerf is formed in the main body part firstly, then the convex hull is formed through integral punching, the convex hull is a half convex hull, the machining difficulty is low, and the needed punching force is small.

The invention discloses a terminal device which comprises a metal shell and a touch induction key, and the touch induction key comprises a metal touch panel, an insulating part and an induction circuit board; the insulating part is arranged around the metal touch panel, the metal touch panel is arranged on the metal shell through the insulating part, and the metal touch panel is insulated and isolated from the metal shell through the insulating part; the induction circuit board is arranged on the inner side of the metal shell, is insulated and isolated from the metal touch panel and comprisesa touch induction area, and the touch induction area is opposite to the metal touch panel. According to the scheme, the problem that the appearance performance of the terminal equipment is poor due tothe fact that the touch panel of the touch induction key of the terminal equipment cannot be made of a metal material consistent with that of the shell can be solved. The invention discloses a control method of a terminal device.