142results about How to "Increase insulation distance" patented technology

An electromagnetic relay including a base having a first receptacle, a second receptacle and a partition wall defining the first and second receptacles on mutually opposite sides of the partition wall. The partition wall includes a major part and an auxiliary part, the major part being provided with a local opening. An electromagnet assembly is received in the first receptacle of the base and includes an electromagnet and an armature. The armature includes an extending portion extending in a direction toward the second receptacle of the base through the local opening of the partition wall. The auxiliary part of the partition wall is disposed between the electromagnet and the extending portion of the armature. A contact section is received in the second receptacle of the base. An actuating member is arranged between the electromagnet assembly and the contact section, and includes an envelope part for enclosing at least a part of the extending portion of the armature. When the contact section is opened, the envelope part of the actuating member is supported by the auxiliary part of the partition wall.

The invention discloses a small-capacity epoxy resin poured dry type transformer, belonging to the technical field of dry type transformers. The small-capacity epoxy resin poured dry type transformer comprises an iron core, a low-voltage coil, a high-voltage coil, an upper clamp piece, a lower clamp piece, an upper cushion block, a lower cushion block and a pull screw rod, wherein a ventilation air duct is arranged between the low-voltage coil and the high-voltage coil, the upper and lower cushion blocks are arranged on the upper and lower ends of the ventilation air duct, the upper cushion block is provided with the upper clamp piece, the lower cushion block is provided with the lower clamp piece, the pull screw rod is connected between the upper clamp piece and the lower clamp piece, a lead-out wire of the low-voltage coil is connected onto a low-voltage lead insulator, a starting lead of the high-voltage coil is connected to a start terminal, a tapping lead of the high-voltage coil is connected to a tapping terminal, and a tail lead of the high-voltage coil is connected onto a tail terminal. The small-capacity epoxy resin poured dry type transformer has the characteristics that a plurality of tapping joints of the tapping terminal are arranged in a equilateral polygon shape, and resin partitions are respectively arranged between the tapping terminal and the starting terminal and between the tapping terminal and the tail terminal. The small-capacity epoxy resin poured dry type transformer has the advantages of improving the safety use performance, prolonging the insulation distance among all tapping points, and improving the electric insulation strength, and is small in size and compact and reasonable in structure.

The invention relates to an unloading off-circuit tapping switch used in a transformer, comprising an upper pedestal, a lower pedestal and a rotary shaft which penetrates through the upper and lower pedestals, the rotary shaft is provided with a support piece and a moving contact assembly, an insulator is linked between the upper pedestal and the lower pedestal, a fixed contact configured corresponding to the moving contact assembly is mounted at the inner side of the insulator, the difference lies in the fact that an outer insulating cylinder is mounted on the periphery of the insulator, theouter insulating cylinder is provided with spaced connecting terminals, an inner end of the connecting terminal is linked with a leading-out terminal on the insulator via a linkage conductor, the leading-out terminal is connected with the fixed contact, and two adjacent connecting terminals are distributed in an axially and vertically staggered manner. The invention dramatically ameliorates electric field distribution of the switch at the same time of unloading, and the adjacent connecting terminals are distributed on the outer insulating cylinder in an axially and vertically staggered manner,thus further improving insulating level of the adjacent terminals; the invention is simple and compact in structure as well convenient for manufacturing and installation, The invention is suitable for tapping switches of high voltage and large current in particular.

The invention provides a rotary conducting structure. The rotary conducting structure comprises an inner insulation sleeve and an outer insulation sleeve, the axes of the inner and outer insulation sleeves extend in the front and back direction, the inner insulation sleeve is arranged coaxial with the outer insulation sleeve, and at least one bearing is arranged in an annular space formed between the inner and outer insulation sleeves. Each bearing includes a circumferentially enclosed bearing outer ring, a circumferentially enclosed bearing inner ring and a conducting ball, wherein the bearing outer ring is fixedly assembled at the internal circumferential surface of the outer insulation sleeve, the bearing inner ring is fixedly assembled at the external circumferential surface of the inner insulation sleeve, and the conductive ball is connected between the bearing inner ring and the bearing outer ring. The bearing inner and outer rings of the rotary conducting structure are enclosed circumferentially and fixed to the inner insulation sleeve and the outer insulation sleeve which are arranged coaxially, the radial sizes of the different positions of the annular space formed between the bearing inner and outer rings are the same, the ball makes stable and unchanged contact with the bearing inner and outer rings when rotating circumferentially in the annular space in a circulated manner, and the rotary conducting performance is high.

This invention relates to compound insulator field control method, wherein, the insulator comprises chip bar, metal wares on both sides and umbrella protection cover; the method is characterized by the following: adopting silicon rubber materials with high dielectric parameters with less than 5 percent of umbrella protection with other protection part adopting regular rubber for casting into shape. This invention uses the materials to process compound insulator cover to improve voltage bearing ability and to ease maximum field of insulator end.

The invention discloses a wire coil for an electromagnetic rice cooker and a coiling method. The wire coil for the electromagnetic rice cooker comprises a support, a magnetic stripe and a stranded wire. The coiling method includes the following steps of firstly, dividing the stranded wire into two parts; secondly, separately coiling one part of the stranded wire on the outer surface of the support; thirdly, coiling the other part of the stranded wire on the bottom surface of the support; and fourthly, mounting the magnetic stripe on the support. During use, different parts of the stranded wire are coiled separately and gaps are reserved among turns of the stranded wire. Therefore, the wire coil compared with the prior art has the advantages that insulation distance between each two adjacent turns is increased, probability of short circuit among the turns in case of transient overvoltage and overcurrent is reduced, probability of direct short circuit among the turns as a result of failure of insulation caused by thermal ageing of insulation materials of wires is reduced, high-frequency coil loss caused by high-frequency proximity effect generated by compact arrangement of the turns is reduced, and heat of the wire coil is easy to radiate, so that uniform heating in large area of the rice cooker is facilitated.

The present application provides a flat panel transformer and a switching power adapter. The flat panel transformer includes a PCB winding and two magnetic cores. The two magnetic cores are respectively wrapped on both sides of the winding body of the PCB winding to form a closed magnetic circuit. A first set of welding points is arranged on the side of the primary winding of the PCB winding, anda second set of welding points is arranged on the side of the side of the secondary winding. The flat panel transformer is welded directly to an external circuit board through the first set of weldingpoints and the second set of welding points. In this way, the welding of PIN pins on the PCB winding board is not needed. Therefore, the processing order of the flat panel transformer is simplified,the fully automated processing is achieved, the processing time cost is educed, and the processing efficiency is improved. Moreover, the flat panel transformer can be installed vertically on the external circuit board through the first set of welding points and the second set of welding points. Compared with a horizontal flat panel transformer, the vertical installation mode reduces the space required for occupying the external circuit board and improves the space utilization rate of the external circuit board.

The invention discloses a novel single-fracture single-cylinder self energy high pressure sulfur hexafluoride breaker arc extinguish chamber, comprising a static contact mechanism and a moving contact mechanism which are used in a matching way, a moving contact seat and an insulating tension pipe driving the moving contact mechanism to carry out on and off operations up and down; wherein the moving contact mechanism is axially arranged in the cylinder and is driven by the cylinder to carry out on and off operations, the static contact mechanism, the moving contact mechanism and the moving contact seat are axially arranged in an arc extinguish ceramic sleeve from up to down, the inner diameter of the cylinder is 40-50% less than that of a compressed air SF6 breaker cylinder, and the cylinder is a pneumatic cylinder with residual capacity in the interior after off operation of the moving contact mechanism. The invention has reasonable structure design, simple use operation and good use effect, and can realize triplex functions of the cylinder being used as a compressed air chamber and a thermal expansion chamber and remaining reasonable residual capacity, so that the self energy sulfur hexafluoride breaker can utilize electric arc energy to help extinguish the electric arc when in heavy cut-off current, thus greatly reducing operation power.

The invention relates to an integrated high-voltage electric box for a battery system. The integrated high-voltage electric box is used for installing a high-voltage electric component of the battery system therein, wherein the high-voltage electric component comprises a positive electric component, a negative electric component and a functional electric component; the electric box comprises an upper cover and an installation base; the upper cover is detachably connected to the installation base; the high-voltage electric component is arranged between the upper cover and the installation base; and one side surface, connected with the upper cover, of the installation base is provided with an installation part for installing the positive electric component, the negative electric component and the functional electric component and separating the positive electric component, the negative electric component and the functional electric component in an insulating manner. According to the electric box provided by the invention, the positive electric component, the negative electric component and the functional electric component in the high-voltage electric component of the battery system are integrated into an integral structure through the arranged installation part, so that the battery system is high in integration degree, high in space utilization ratio, small in installation space and flexible and convenient to maintain.

The invention relates to a vertically grounding down-leading method for the center of a composite material tower and a tower thereof, wherein the ground wire cross arm is made from a metal material, a grounding downlead is led from the center of the ground wire cross arm, and the grounding downlead is vertically led down to be grounded from the right center of the composite material tower. If the lower half tower body is a steel tube, the grounding downlead can be directly connected with the steel tube to be grounded. The invention utilizes the insulating strength of the composite material tower wall, enhances the line insulating strength of lightening impulse resistance, avoids the short circuit of the grounding downlead and the composite material tower body and plays an insulation role of the composite material tower body. The grounding downlead is prevented from the damage by strong wind and other external forces owing to exposure outside because the grounding downlead is penetrated from the internal side of the tower; furthermore, the structure is simple, and easy to implement.

The invention relates to an integrated high-voltage electrical box for a battery system. The integrated high-voltage electrical box comprises an upper cover and a casing, wherein the upper cover covers the casing and is detachably connected with the casing; a high-voltage component, a positive and negative electrode input copper bar and two positive and negative electrode output copper bars are mounted in the casing, one end of the positive and negative electrode input copper bar and one end of each of the two positive and negative electrode output copper bars are connected with the high-voltage component, and the other end of the positive and negative electrode input copper bar and the other end of each of the two positive and negative electrode output copper bars are located in the upper side edge position of the casing; a plugging structure which is used for enabling the other ends of the two positive and negative electrode output copper bars and the other end of the positive and negative electrode input copper bar to be safely exposed is arranged on the peripheral side of the upper cover. One input end and two output ends are arranged on a battery case, so that the electrical box has higher compatibility and can adapt to different project demands; the high-voltage component is mounted on the casing, so that the electrical elements are high in integration degree, high in space utilization rate and flexible and convenient to maintain; the plugging structure is arranged on the upper cover, and the high voltage input and output safety of the electrical box is improved.

The built-in fiber temperature signal transmission device for medium and high voltage system includes one built-in fiber with one end coupled to the emitting tube of signal treating and converting circuit and the other end coupled to low voltage side receiving tube, and one insulator covering the built-in fiber and its circuit in high voltage breaker or other electric equipment. The device has high measurement precision, high insulation strength and high measuring safety.

An ignition coil includes a primary coil (14), a secondary coil (16) disposed on an outer circumferential side of the primary coil and configured to be boosted by mutual induction with the primary coil, an outer periphery core (18) having an opposing surface (183), which is opposed to an outer peripheral surface (160) of the secondary coil, and an insulating member (20) disposed between the outer peripheral surface and the opposing surface. The secondary coil and the outer periphery core are arranged such that a shortest distance between the outer peripheral surface and an outer edge (183a, 183b) of the opposing surface is larger than a shortest distance between the outer peripheral surface and the opposing surface.

The present invention relates to a brushless motor. In order to improve the efficiency of the DC brushless motor to increase the duty cycle of the windings housed in the slot. Therefore, the insulated distance between the windings of slit and the stator core becomes less, and the problem of increased leakage current exists in the working washer under relatively high humidity conditions. In order to solve the problem, the present invention provides an DC brushless motor, which makes the front end section of the T shaped piece of the stator into a on-concentric circular relative to the rotor, makes the front end section of the shaped piece opposite to the rotor into a reversed circular arc, a gap section is provided between the concentric circle of inscribing the front end section of the T shaped piece and the front end section of the T shaped piece of the stator, the insulated object for insulating the windings passes through the narrow slit from the inner side to the gap section for integral resin die-casting into a stator core, thereby increasing the insulated distance between the winding and the stator core.