7 results about "Insulation Problem" patented technology

The utility model relates to motor protection technical field especially relates to a kind of prevent motor condensation structure, comprising: motor cavity, junction box cavity, stator phase outgoing line, junction box cavity is connected with motor cavity;Stator phase outgoing line one side is located in motor cavity, other side is located in junction box cavity inside.The utility model is used by upper rubber sleeve, lower rubber sleeve and sub-cavity rib plate cooperation, the upper and lower sealing isolation of stator phase outgoing line is completed, so that motor cavity and junction box cavity form two different cavities, form physical isolation, which in motor working process, air in motor cavity is blocked by isolation component and isolated, so that hot air cannot reach junction box cavity, complete heat convection inhibition, so that junction box cavity and motor outside temperature difference reduces, inside and outside temperature reaches relative balance, cannot reach the environmental conditions of generating condensate, prevent the appearance of condensation phenomenon, and then effectively avoid the insulation problem of poor in the high-voltage outgoing line, high-voltage terminal and other positions of motor.

This utility model relates to the field of resistor technology, specifically to a resistor tube with overlapping wiring, comprising an insulated support tube and a resistor strip spirally wound around the support tube. The resistor strip is an exposed metal strip, comprising integrally formed, continuously bent, alternately bent main body segments and connecting segments. The main body segments maintain a straight shape due to their own strength, while the connecting segments are arc-shaped. Adjacent main body segments are connected via the connecting segments and arranged in a V-shape. Multiple positioning grooves are formed on the outer side of the support tube, and the middle of each main body segment overlaps and is embedded in the positioning grooves. The elasticity of the connecting segments clamps adjacent main body segments tightly against the support tube. Compared with existing technologies, the resistor strip is directly exposed to air for heat dissipation, resulting in higher power density. It eliminates the need for the outer shell and magnesium oxide insulating powder of existing load resistor tubes, reducing the influencing factors of insulation and failure issues. It eliminates the need to consider the high-temperature insulation failure of magnesium oxide powder and problems caused by shell corrosion.

The present application relates to the technical field of vehicle detection, more particularly to an insulation inspection method for new energy electric vehicle, which comprises the following steps: step S1, the vehicle is segmented according to the high-voltage components of the new energy electric vehicle, an insulation inspection module is arranged for each segmented area, and the insulation state of the vehicle is detected; if the vehicle has insulation problems, step S2 is entered; step S2, the vehicle enters a degraded operation mode, the load is actively cut off, and whether the minimum operation capacity of the vehicle is met is judged; if the minimum operation capacity of the vehicle is not met, step S3 is entered; step S3, the vehicle enters an insulation inspection mode, and the insulation of each segmented area is detected in sequence by the insulation inspection module, so as to locate the fault position. The high-voltage components of the vehicle are segmented and detected synchronously, the insulation fault point can be quickly located, and the operation requirement of quick processing of the vehicle is met.

This utility model belongs to the field of gas supply pipeline insulation technology, specifically relating to an insulation device for the gas supply pipeline of an automatic furnace door for a calcium carbide furnace. It includes a cylinder with an inlet and an outlet connected to it. A locking disc is fixedly connected to both the inlet and outlet. A nylon adapter is threadedly connected to the inside of the inlet. By adding nylon adapters at the inlet and outlet of the cylinder, a transition between the inlet / outlet and the gas pipe is achieved. The nylon adapters have insulating properties, preventing short circuits and sparking caused by insulation issues, and avoiding equipment or production accidents caused by short circuits damaging the water supply equipment. Furthermore, locking discs are installed at both the inlet and outlet, and a retractable locking pin is installed on the nylon adapter. After the nylon adapter is screwed into place, it can be locked and fixed by the locking pin and the locking disc, preventing loosening and ensuring the airtightness of the nylon adapter installation.

The application provides a vibration isolation tie-in box for a floating floor and a floating floor, and belongs to the field of fabricated buildings. The floating floor comprises a bottom layer, a sound insulation layer and a surface layer. The sound insulation layer is laid on the bottom layer, and the surface layer is cast in place on the sound insulation layer. The vibration isolation tie-in box comprises a main body, a vibration absorption layer and a tie-in member. The main body has a closed damping chamber inside, and the vibration absorption layer is attached to the main body. The main body is embedded in the bottom layer, and one end of the tie-in member is installed in the main body in a fabricated manner and extends into the closed damping chamber, and the other end penetrates the sound insulation layer and is tied in the surface layer. The tie-in member and the main body of the vibration isolation tie-in box constrain the surface layer on the bottom plate, preventing the surface layer from cracking due to uneven local compression deformation of the material of the sound insulation layer. The vibration at the end of the tie-in member is blocked in the closed damping cavity of the main body, and the sound bridge between the main body is blocked by the vibration absorption layer, thereby simultaneously solving the cracking and sound insulation problems.

The present application relates to an early degradation diagnosis method for ultrasonic power supply power devices, aiming at the problem of insufficient accuracy and timeliness of traditional insulation deterioration and local short circuit precursor detection, a multi-modal feature diagnosis method is proposed, which fuses cold-state resistance mutation, high-speed gray space evolution and near-infrared spectrum response. The method uses synchronous high-speed current sensing, image capture and near-infrared spectrum acquisition to construct the original multi-dimensional sensing data set, through time domain slope analysis, space brightness diffusion and spectrum peak correction, the insulation deterioration and heat accumulation characteristics are extracted, and through the lightweight decision tree model, the four-level degradation state classification is realized, the graded early warning and closed-loop risk control are completed. The system has the advantages of strong environmental adaptability, intuitive state criterion and high diagnosis precision, and can realize early identification of insulation problems such as gate oxide layer micro-breakdown, effectively improving the safety and reliability of power device operation.

To address the insulation problem of three-dimensional wing-like structures with protruding leading edges, this invention discloses a large-angle curved three-dimensional long-groove vacuum insulation structure and its preparation method. Through adsorption core material three-dimensional molding and stainless steel mold extrusion molding, the arc-shaped vacuum insulation panel achieves precise dimensional control, arbitrary angle bending, and extremely low thermal conductivity, further solving the insulation problem of protruding structures. The three-dimensional long-groove vacuum insulation structure disclosed in this invention consists of a frame, a core material, and a membrane material. The frame is made of nylon or polyimide, the core material is fumed silica or oxide fibers, and the membrane material is a composite membrane containing aluminum foil. Compared with splicing molding, integral molding eliminates thermal bridges caused by seams, reducing the risk of heat and cold leakage. The overall thermal conductivity can reach 0.0005 W / mK. Furthermore, mold molding allows the membrane material and core material to be completely bonded and adhered, effectively improving the surface flatness and smoothness of the panel and increasing the assembly accuracy with the target insulation component.