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5 results about "Space cloth" patented technology

Space cloth is a hypothetical infinite plane of conductive material having a resistance of η ohms per square, where η is the Impedance of free space. η ≈ 376.7 ohms. If a transmission line composed of straight parallel perfect conductors in free space is terminated by space cloth that is normal to the transmission line then that transmission line is terminated by its characteristic impedance. The calculation of the characteristic impedance of a transmission line composed of straight, parallel good conductors may be replaced by the calculation of the D.C. resistance between electrodes placed on a two-dimensional resistive surface. This equivalence can be used in reverse to calculate the resistance between two conductors on a resistive sheet if the arrangement of the conductors is the same as the cross section of a transmission line of known impedance. For example, a pad surrounded by a guard ring on a printed circuit board (PCB) is similar to the cross section of a coaxial cable transmission line.

Wiring frame for electrical contacting a stator

Conductor frame (10) for electrically contacting stator windings (114) of a three-phase stator (110) comprising: an annular base body (12) with a top (12a) and a bottom (12b); three connection contacts (40) for electrically contacting a respective stator phase (P1, P2, P3) to an inverter (240) on the inverter side, wherein the connection contacts (40) are arranged on the top (12a); several axially insulated conductor planes (20) arranged in the annular base body (12), wherein the conductor planes (20) extend several times in the circumferential direction.(6) have spaced-apart conductor sections (22); several electrically conductive contact elements (30) extending axially through the annular base body (12), which are arranged radially spaced from the conductor sections (22), wherein the contact elements (30) are arranged distributed in the circumferential direction (6); wherein the conductor planes (20) further have conductor tongues (24) projecting radially from the conductor sections (22), which electrically connect the conductor sections (22) to the contact elements (30), wherein the conductor tongues (24) are arranged such that the conductor planes (20) and the contact elements (30) provide an electrical connection of the stator phases (P1, P2, P3) between the contact elements.(30) and the connection contacts (40), wherein at least some of the several contact elements (30) are designed for electrical contact with the stator windings (114), wherein the conductor frame (10) further comprises a connection device (50) which is electrically connected to the connection contacts (40) for electrical contacting a respective stator phase (P1, P2, P3) to the inverter (240), wherein the connection device (50) comprises a housing, three main lead pins and three cables for electrical connection between the main lead pins and the connection contacts (40), wherein the main lead pins are fixed in the housing and project from the housing in an axial direction (2), and wherein the connection device (50) is floatingly attached to the annular base body (12).
Owner:BORGWARNER INC

Flat cable bending fatigue enhancement structure

PendingCN122291153AReduce friction lossHigh bending fatigue resistanceElectrical conductorIsolation layer
This invention discloses a bending fatigue enhancement structure for flat cables, relating to the field of flat cable technology. It includes a wear-resistant outer sheath, a flexible skeleton, an elastic inner liner, and a composite conductor bundle. The wear-resistant outer sheath covers the flexible skeleton, with bending stress cores at the outer ends. The flexible skeleton is internally covered by an elastic inner liner, which contains two spaced-apart composite conductor bundles. The flexible skeleton has grooves filled with an anti-oxidation coating layer, within which the bending stress cores are fixed. The interior features stress-dispersing adhesive grooves intersecting with the grooves, and high-toughness reinforcing ribs with abrasion-resistant protective sleeves are installed at the four corners. The elastic inner liner has a water-blocking tape wrapping layer on its outer side and a flame-retardant isolation layer inside. The composite conductor bundles are wrapped with cable core fixing rings and an electromagnetic shielding layer. This structure, through multiple stress dispersion, protection, and positioning designs, significantly improves the cable's bending fatigue resistance, ensuring stable transmission and safe operation, and is suitable for high-frequency bending scenarios.
Owner:SHANDONG YANGGU HENGCHANG CABLE GRP CO LTD

Tension control structure of polyester yarn winding device

ActiveCN224493243UYarnReciprocating motion
This application belongs to the technical field of winding devices and discloses a tension control structure for a polyester filament winding device, including a base plate, a mounting frame, a winding roller, a drive motor, a fixed frame, a guide roller, a lifting frame, a tension roller, and a threaded rod. A rotating shaft, with its lower end connected to the upper end of the threaded rod, is vertically rotatably mounted on the fixed frame. A lower ring is fixedly sleeved on the rotating shaft. A connecting frame is provided at the top of the fixed frame, and a mounting tube arranged concentrically with the rotating shaft is provided on the connecting frame. An upper ring is vertically slidably mounted on the mounting tube. Two circumferentially spaced grooves are formed on the bottom surface of the upper ring, and a protrusion that mates with the grooves is provided on the top surface of the lower ring. Rotating the rotating shaft causes the lower ring to rotate, causing the protrusion to disengage from the groove and push the upper ring upwards. When the protrusion aligns with the next groove in the rotation direction, the upper ring falls back to its original position, and the protrusion and groove re-engage. Each up-and-down reciprocating motion of the upper ring corresponds to a half-turn rotation of the rotating shaft and the threaded rod.
Owner:ZHEJIANG HEWU TECHNOLOGY CO LTD

A high-voltage cable for detecting space charge on-line, a detection method and a manufacturing method

The application provides a high-voltage cable for detecting space charge, a detection method and a manufacturing method. The outer sheath is provided with two second circumferential seams and three second axial seams; the two side edges of the fixed sheath part are hinged to the connecting side edges of two detachable outer sheath blocks, and a switching mechanism is arranged between the opening and closing side edges of the two detachable outer sheath blocks; and the buffer sleeve is provided with two spaced first circumferential seams and a first axial seam. The outer sheath is divided into a fixed sheath part and two detachable outer sheath blocks, so as to form an openable and closable detection window; the fixed sheath part is integrally connected with the outer sheath, and the two detachable outer sheath blocks are hinged to the fixed sheath part, so that the detection window can be quickly opened and closed, and the switching mechanism is locked to cooperate with the first circumferential seam and the first axial seam of the buffer sleeve, so that the buffer sleeve can be opened synchronously with the detection window.
Owner:CHINA ELECTRIC POWER RES INST WUHAN BRANCH +1

Energy storage busbar cabinet

The utility model provides a kind of energy storage busbar cabinet, wherein, multiple branch circuit breakers are arranged in the middle of upper cloth space. A busbar circuit breaker is further arranged in the lower cloth space. The output end of each branch circuit breaker is connected with the busbar circuit breaker, i.e. the branch circuit breaker can control the output of multiple branch circuit breakers after busbar connection, so that the power output of the energy storage busbar cabinet is controlled by the breaking condition of the busbar circuit breaker itself. The multi-input cable of the cabinet body enters the cabinet body from the first side bottom, and the output busbar extends out of the cabinet body from the bottom of the second side of the cabinet body, so that the power-in end and the power-out end of the cabinet body are both at a low position. On the one hand, it can effectively prevent the operating personnel from accidentally touching the live cable, and on the other hand, it facilitates the burial of the multi-input cable and the cable connected with the output busbar, further reducing the risk of electric shock.
Owner:QINGDAO NAHUI ENERGY TECH CO LTD