21results about How to "Maintain insulation properties" patented technology

The invention relates to an electric submersible pump shaft cable field pressure test type high-pressure sealing device and method. According to the technical scheme, the outer side of a casing side wing valve is connected with a fixing connector through a flange, the fixing connector is connected with one end of a double-male pup joint through a fixing nut, an inner sealing connector is installed in an inner cavity of the fixing connector, and a locking nut is installed on the outer side of the fixing nut; a sealing joint is installed at the other end of the double-male pup joint, the sealing joint is fixed through a connecting nut, and a locking nut is installed on the outer side of the connecting nut to form a pressure test sealing cavity; the plug on the pressure test pup joint is opened to be connected with the pressure test pump, pressure test oil is injected into the pressure test pup joint, and on-site high-pressure sealing pressure test is carried out. The beneficial effects are that the damage probability of the cable passing through the sleeve four-way joint and the side wing valve is reduced; the construction difficulty is reduced, and the well completion speed is increased; the operation of high-pressure sealing connection construction is more convenient; the sealing effect of high-pressure sealing can be detected on site; and the high-pressure seal is overhauled without organizing an operation construction team to lift an oil pipe.

The invention provides a refractory bus bar and a battery pack including the same. The refractory bus bar includes: a bus bar conductor portion; a refractory silicone cover including a cap portion covering both ends of the bus bar conductor portion, and a main body covering portion integrally joined to the cap portion while covering a main body of the bus bar conductor portion between the both ends, the refractory silicone cover is ceramized at a high temperature to support the bus bar conductor portion; and a protective layer covering the refractory silicone covering, in which a through hole extending from an upper surface of the cap portion to a surface where the cap portion is in contact with the bus bar conductor portion is formed in the cap portion.

The utility model discloses a kick-type temperature controller, which belongs to the technical field of kick-type temperature controllers and comprises a main frame, auxiliary supports are fixed on two sides of the bottom end of the main frame, the main frame comprises a bottom shell frame, pin frames are fixed on two sides of the bottom end of the bottom shell frame, a mounting frame is fixed on the top surface of the bottom shell frame, and the pin frames are fixed on the mounting frame. Mounting holes are formed in the two ends of the mounting frame, and a top shell frame is fixed to the top face of the mounting frame. The kick type temperature controller is composed of the mounting frame, the top shell frame and the outer metal cover, a buffer area can be formed through the gap layer arranged in the metal cover, and when the kick type temperature controller is subjected to external stress, the kick type temperature controller can be matched with the gap layer to form external buffer, so that the internal metal sheet structure cannot be influenced when the outside is pressed and deformed, and the service life of the kick type temperature controller is prolonged. And equidistant supporting rods are annularly distributed on the peripheral edge of the gap layer, so that the structural supporting performance of the outer metal cover body in an extrusion state can be kept, a protection effect is achieved, and the temperature controller structure is kept stable in use.

The invention relates to the technical field of heat conduction and insulation of electronic appliances, and discloses a heat conduction and insulation material and a preparation method and application thereof.The heat conduction and insulation material comprises a base material and heat conduction powder, and the base material is selected from a hydrogenated styrene-butadiene-styrene block copolymer (SEBS), an alpha olefin copolymer (APAO) and an ethylene-butyl acrylate copolymer (EBA); through reactive extrusion, an alpha-olefin copolymer (APAO) and an ethylene-butyl acrylate copolymer (EBA) are subjected to a cross-linking reaction under the action of peroxide and form a ternary cross-linked network with a hydrogenated styrene-butadiene-styrene block copolymer (SEBS) through a physical entanglement effect; and meanwhile, the heat-conducting powder is dispersed and fixed in the mixed material in the cross-linking reaction process by utilizing the tackifying and compatibilizing effects of an alpha-olefin copolymer (APAO), so that the ternary-structure semi-intertransmission network elastomer is formed. Excellent mechanical, aging-resistant, temperature-resistant and electrical properties are realized, and the cost benefit is high; the method is suitable for electronic equipment.

The invention relates to the technical field of wire enamel preparation, in particular to a preparation process optimization method and system based on high-heat-resistance wire enamel, and the method comprises the following steps: enhancing the stability of a to-be-modified wire enamel material to obtain an original modified precipitate, and performing a stability test on the original modified precipitate to obtain a modified dispersion factor; judging whether the modified dispersion factor is greater than a standard dispersion factor or not, if so, adjusting the modified mixing ratio to obtain an adjusted mixing ratio, and returning to the step of enhancing the stability of the to-be-modified line paint material, and if not, marking the original modified precipitate as a modified line paint material; preparing and coating modified heat-resistant wire paint to obtain a target test wire rod, and performing a high-temperature resistance test on the target test wire rod to obtain the optimal heat-resistant quality. The preparation cost and the preparation complexity of the high-heat-resistance wire enamel can be reduced.

The utility model provides a new energy automobile enhanced heat dissipation cable, which relates to the technical field of cables, and comprises an integral structure and auxiliary structures, and the auxiliary structures are located at the front and rear positions of the top of the integral structure; the overall structure comprises a conductor body, a first heat dissipation layer is fixedly connected to the center of the outer surface of the conductor body, a second heat dissipation layer is fixedly connected to the center of the outer surface of the first heat dissipation layer, and a plurality of evenly-distributed water cooling pipes are arranged on the inner surface of the second heat dissipation layer in a penetrating mode. A user can pour water into the water cooling pipe through the water injection pipeline, the water finally flows into the water cooling pipe and flows through the pipeline, heat generated by the conductor body can be taken away in time, accumulation of heat in the cable is avoided, the heat can be well dissipated through mutual cooperation of the first heat dissipation layer and the second heat dissipation layer, and the service life of the cable is prolonged. Therefore, the overall heat dissipation effect is improved.

The invention discloses a preparation method of a corona-resistant polyimide chromium oxide film, and relates to the technical field of high voltage and insulation. The specific preparation method comprises the following steps: (1) preparing modified nano chromium oxide: firstly dispersing chromium oxide nanoparticles, adding an aniline monomer, stirring, then dropwise adding an ammonium persulfate solution, and stirring for reaction to obtain polyaniline-coated chromium oxide nanoparticles; dispersing the polyaniline-coated chromium oxide nanoparticles, adding a silane coupling agent, and stirring to obtain modified chromium oxide nanoparticles; (2) dispersing the modified chromium oxide nano-particles, and adding the dispersed modified chromium oxide nano-particles into the polyimide precursor solution to prepare a mixed solution; and (3) coating a substrate with the mixed solution, and carrying out thermal imidization treatment to obtain the polyimide chromium oxide corona-resistant film. The polyimide chromium oxide corona-resistant film prepared by the invention has relatively long corona-resistant service life and excellent mechanical property, thermal stability and insulating property.

The invention provides a sodium-supplementing diaphragm, a preparation method and application thereof and a sodium-ion battery, and belongs to the technical field of sodium-ion batteries. According to the invention, the base film layer is used as the basis of the sodium-supplementing diaphragm, and the protective layer is arranged to maintain the stability and insulativity of the sodium-supplementing diaphragm, so that the puncture effect of burrs and compounds generated in the battery cell manufacturing process and the charging and discharging process on the diaphragm is reduced, and the risk of positive and negative electrode contact short circuit is reduced; sodium ions are dissociated through the sodium supplementing layer, sodium loss of the battery in the using process is made up, and then the first coulombic efficiency, the charge-discharge capacity and the energy density of the sodium ion battery are effectively improved; through mutual cooperation of the oxygen absorption layer and the sodium supplementing layer, by-product gas and solid of the sodium supplementing layer are adsorbed, side reaction products generated by electrolyte are adsorbed, decomposition of an SEI film is prevented, gas production is reduced, and the cycle performance and safety performance of the battery are further improved.

The utility model discloses a freezer capable of being assembled, which comprises a foot margin, wall plates are arranged on the periphery of the top of the foot margin, a top plate is arranged on the top of each wall plate, eccentric hook structures are respectively arranged between the foot margin and the wall plates, between the wall plates and between the wall plates and the top plate for splicing connection, and vacuum insulation plates are arranged in the wall plates and the top plates. An assembled sealed refrigeration house is formed among the ground feet, the wallboards and the sky board, and the sky board and the wallboards are both of a steel sandwich structure. Eccentric hook mounting structures are arranged at the adjacent positions among the wallboards, the sky boards and the ground feet, the eccentric hook structures are arranged between the reinforcing plates and the second vacuum heat insulation layer for connection, connection and mounting are facilitated, the overall structure thickness is reduced to 3 cm, it is guaranteed that the combustion capacity reaches the A level, and the heat preservation performance meets a certain requirement; the assembly is convenient and fast, the structure is stable, the installation area and the installation position of the refrigeration house can be conveniently adjusted in real time on site, and flexibility and convenience are achieved.

The invention relates to a house building energy-saving roof high-reflection heat-insulation coating and a construction process thereof, the coating comprises a high-reflection heat-insulation main coating formed by curing, and the high-reflection heat-insulation main coating is prepared from raw materials in parts by mass; the colloidal silicon dioxide subjected to surface modification by organosilane is distributed at a contact interface of the borosilicate hollow glass beads and the hydrophobic silicon dioxide aerogel powder and is used for forming an interface bridging unit; the median particle size of the borosilicate hollow glass beads is set to be as follows, the median particle size of the hydrophobic silicon dioxide aerogel powder is set to be as follows, and the average particle size of the colloidal silicon dioxide subjected to surface modification by organosilane is set to be as follows; the mass ratio of the borosilicate hollow glass beads to the hydrophobic silicon dioxide aerogel powder to the colloidal silicon dioxide surface-modified by the organosilane is 1: (0.50-0.75): (0.20-0.32). According to the invention, the interfacial compatibility and dispersion stability of the aerogel particles and the hollow glass beads in a film forming system are improved, and the distribution stability of the functional filler in a coating is improved.

The invention belongs to the technical field of flushing fluid for an electric automobile cooling system, and particularly relates to low-conductivity flushing fluid for the electric automobile cooling system as well as a preparation method and application of the low-conductivity flushing fluid. The flushing fluid is prepared from the following components in parts by mass: 74.04 to 79.88 percent of deionized water, 20 to 25 percent of an alcohol solvent, 0.05 to 0.30 percent of a nonionic surfactant, 0.05 to 0.40 percent of a chelating agent, 0.005 to 0.05 percent of an anticorrosive agent, 0.001 to 0.02 percent of a silicon-based defoaming agent and 0.01 to 0.20 percent of a buffering agent, and the silicon-based defoaming agent exists in the form of a nano dispersion. The invention relates to a nanotechnology low-conductivity flushing fluid which is based on an ethylene glycol solvent system with the same polarity as a cooling liquid and has the advantages of cleaning power, low conductivity, corrosion resistance and foam inhibition.

The utility model discloses a cold storage plate structure which comprises a plurality of cold storage plates, the cold storage plates are connected through eccentric hook connecting structures, the two side faces of each cold storage plate are provided with a protruding block fixing position and a groove fixing position respectively, and the protruding block fixing positions and the groove fixing positions are in butt joint and embedded fit with each other. A cold bridge heat insulation layer is further arranged between the protruding block fixing position and the groove fixing position, fixing plates are arranged on the two sides of the cold bridge heat insulation layer, and the fixing plates deform on the cold bridge heat insulation layer due to contact extrusion of the protruding block fixing position and the groove fixing position to form a clamping and fixing structure for the two storage plates. By means of the mode that the eccentric hook pieces are arranged inside, the eccentric hook pieces are exposed out of the warehouse plates after the warehouse plates are assembled, the angle of the warehouse plates during connection can be conveniently positioned, the warehouse plates are more attractive, bolt fixing is not needed, and the situation that the warehouse plates are frozen by the ice warehouse is avoided; and meanwhile, the effect of hiding gaps at the joints of the adjacent warehouse plates is achieved.

The present invention discloses a high-efficiency heat exchange electric control cabinet cooling system, comprising a support platform, a power box is arranged on one side of the support platform, a support frame is arranged on the support platform, a sealing door is sealedly installed on one side of the support frame, and the other sides of the support frame are embedded with heat insulation plates, a transmission box and a heat dissipation box are arranged on the power box in sequence, an electrical appliance bracket is arranged in the middle of the inner side of the support frame, and a plurality of filtering and cooling components are stacked on both sides of the electrical appliance bracket, the filtering and cooling components include a guide fan, a filter box is installed on the top of the guide fan, a cooling box is installed on the top of the filter box, movable baffles are arranged on the opposite sides of the cooling boxes and the filter boxes on both sides, and a first slide for driving itself to move up and down is installed on the side of the movable baffle close to the transmission box, while maintaining the best energy utilization efficiency on the basis of maintaining dust-free, temperature-controlled and low noise, reducing the overall energy consumption in each long-term working period, and ensuring the best energy utilization efficiency.

This invention discloses a flame-retardant rare-earth aluminum alloy flexible cable and its preparation method, relating to the field of wire and cable technology. The cable comprises a flexible conductor formed by stranding single rare-earth aluminum alloy wires, an insulation layer extruded over the flexible conductor, and a sheath layer located outside the insulation layer. The insulation layer is made of PVC / carboxylated nitrile butadiene composite flame-retardant material, and the sheath layer is also made of PVC / nitrile butadiene composite flame-retardant material, both containing P-N-Si-RE synergistic flame-retardant particles. The P-N-Si-RE synergistic flame-retardant particles include a magnesium hydroxide and / or aluminum hydroxide core, a phytic acid-cerium coordination layer, and a cyclophosphonitrile siloxane coating layer. This invention, through the synergistic design of the flame-retardant particle core-shell structure, the gradient addition of insulation / sheath, and the low-temperature extrusion process, is beneficial to improving the flame retardancy, electrical insulation stability, low-temperature flexibility, and extrusion processing stability of flexible connection cables for equipment of 0.6 / 1kV and below.

The utility model discloses an outdoor high -voltage combined mutual -inductor, including metal shell, first conducting rod, second conducting rod and insulating sleeve, the inside of metal shell is provided with voltage transformer and current transformer respectively, and the both ends of metal shell top are provided with first conducting rod respectively, the central position of metal shell top is provided with second conducting rod, and the outside of first conducting rod and second conducting rod all is provided with insulating sleeve, the insulating sleeve is composed of core rod, big umbrella skirt and small umbrella skirt, the big umbrella skirt and small umbrella skirt all are distributed on the core rod, and the surface of big umbrella skirt is evenly provided with water guide groove, the root of big umbrella skirt all is embedded with electric heating wire. The utility model discloses through being provided with metal shell, first conducting rod, second conducting rod, insulating sleeve, big umbrella skirt, small umbrella skirt, core rod, electric heating wire and water guide groove, can effectively avoid the insulation performance decline caused by rainwater, reduces the risk of surface flashover.

The invention relates to reinforced heat insulation glass and a manufacturing method thereof, and the reinforced heat insulation glass comprises the following components in percentage by weight: 60.0 to 85.2 weight percent of SiO2, 6.14 to 12.0 weight percent of B2O3, 6.14 to 12.0 weight percent of Na2O, 0.1 to 3.0 weight percent of Al2O3, 0.1 to 2.25 weight percent of CaO2, 0.1 to 0.6 weight percent of Fe2O3, 0.1 to 1.0 weight percent of SnO2, 0.1 to 1.0 weight percent of Sb2O3, 0.1 to 1.0 weight percent of Pr2O3, and 0.1 to 1.0 weight percent of ZrO2. Therefore, the automobile safety glass can pass the standard specification of the automobile safety glass with the thickness of 3 mm.

The invention relates to the technical field of composite materials, in particular to a foam reinforced silicon dioxide aerogel composite material and a preparation method thereof. The preparation method comprises the following steps: firstly, preparing fumed silica slurry, adding an opacifying agent, a silane coupling agent and the like, pouring the slurry into foam, filling foam pores, then carrying out a sol-gel process, and carrying out drying in various forms after gelatinization to obtain the aerogel composite material which can continue surface ceramization. The composite material is composed of foam, fumed silica, aerogel and an opacifying agent, and has excellent mechanical compressive strength, tensile strength, anti-vibration and anti-bending capability, durability, compressibility and fireproof and flame-retardant performance while keeping light weight, heat preservation and heat insulation performance and sound absorption and sound insulation performance. The aerogel composite material is good in flatness and stiffness and can be cut, carved and processed into a complex profiling structure, the splicing rough edge heat bridge effect of a traditional glass fiber aerogel material is reduced, and the heat insulation and energy saving efficiency is improved.

The invention discloses a micro-environment control system and method for fused deposition modeling of a high-melting-point thermoplastic material. The high-temperature-resistant separated spray head is developed for high-melting-point thermoplastic materials, high-melting-point and high-viscosity materials, the highest heating temperature can reach 500 DEG C, the microenvironment temperature of a spray head area can be dynamically controlled according to the flow rate of thermoplastic wires, meanwhile, the heat load of mechanism movement accessories is reduced through a three-dimensional heat insulation layer, and therefore the mechanical performance is improved. And the requirements on fused deposition molding precision and performance of the thermoplastic high-melting-point PEEK can be met. And the temperature of the forming cavity is accurately controlled to be 185 + / -0.5 DEG C, and control over a wind field is increased, so that the temperature uniformity is improved, warping and deformation generated in the process that materials are converted from a semi-molten state to a solid state in the forming process are reduced, the forming precision is improved, and the printing precision and stability are ensured.

The invention relates to a mineral insulated fire-resistant cable, which comprises a joint, and the joint comprises a housing, two ends of which are respectively connected with two adjacent cables through locking members; the cable is connected with the fixing units in an inserted mode, the two fixing units are symmetrically arranged, and a plurality of first contacts are arranged on the fixing units; the isolation execution unit is connected to the outer side of the fixing unit in a sleeving mode, the isolation execution unit is connected with the fixing unit in a sliding mode, second contacts are arranged at the two ends of the isolation execution unit respectively, and when the two adjacent cables are in a conductive state, the first contacts and the second contacts are in a connected state; the trigger unit is connected to the outer side of the isolation execution unit in a sleeving mode, and the trigger unit can drive the isolation execution unit to move, so that the two adjacent cables are located in a power-off device; the anti-springback unit surrounds the inner wall of the shell, the outer wall of the trigger unit is fixedly connected with the anti-springback unit, a groove is formed in the anti-springback unit, and the groove is filled with a high-temperature-resistant material.

The utility model discloses a building roof heat insulation facility which comprises a house frame, the top of the house frame is fixedly connected with a roof, a cooling groove is formed in the house frame, the upper end and the lower end of the interior of the cooling groove are fixedly connected with supporting seats, a rotating shaft is rotationally connected between the two supporting seats, and the rotating shaft is fixedly connected with the roof. The top of the rotating shaft is fixedly connected with fan blades, the outer side of the rotating shaft is fixedly connected with a driven wheel, one side of the house frame is fixedly connected with a motor, and during use, the motor is used for driving the driving wheel to rotate, so that the fan blades rotate at the same time under the transmission connection of the driven wheel and the driving wheel through a transmission belt; therefore, air blowing cooling treatment can be carried out on the interior of the building roof, water in the water tank is cooled through the refrigerator, cold water is conveyed through the circulating pump, cold air is generated in the building roof, cooling is carried out while cooling is carried out, and the cooling effect of the building roof can be further improved.

The application belongs to the technical field of high polymer materials, and discloses a flame-retardant hydrophobic copolymer nylon material, a preparation method and application thereof. A low steric hindrance short-chain perfluoroalkyl hydrophobic unit (modified with heptafluoro) and a DOPO flame-retardant unit are integrated in a single caprolactam monomer and embedded in a polymer main chain, so that a hydrophobic barrier is constructed to protect the flame-retardant structure from hydrolysis, a stable mechanism of synergistic enhancement of the two is constructed, and a technical bottleneck that the prior art cannot guarantee long-term safety and reliability of the material under high-humidity harsh environment at the same time is overcome.