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Restoring internal blocking

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Details of cable injection fusion joint
Documentum introductorii

Injectione Cable fusion joint (CMJ)

Field Technical This technology involves the technical field of cross-linked polyethylene insulated power cable connection, especially the latest method of cable injection fusion joint "cable body" recovery tool - a domestically leading cable intermediate or straight connection technology, which may be a substitute for current heat shrink, shrink fit, and prefabricated cable intermediate connections. It is the ultimate product of cable intermediate connection accessories. Internationally, only Koga Electric of Japan possessed the "Extrusion Molded Joint" (EMJ) technology in 1993, which is used as a connection accessory for long-distance cables with a voltage level of 550kV. Background Technique In continuo development of social industry, the demand for power energy is also increasing, and a large number of cross-linked polyethylene insulated power cables are used in the process of power transmission. The so-called power cable is a special conductor used for transmitting and distributing high-power electrical energy in the power system, including cross-linked polyethylene insulated power cables of various voltage levels from 3.6 to 1000 kV, which are insulated and wrapped around metal wire cores, shielded and sealed with functional materials. Due to limitations in production technology, site, and transportation of cross-linked polyethylene insulated power cables, the length of cross-linked polyethylene insulated power cables for medium and low voltage is generally 500-1000 meters per reel, with a reel diameter of 3.2 meters and a reel width of 2.2 meters or less, and a weight of about 3-10 tons, which is convenient for production, storage, and transportation. However, due to the fact that the underground power grid in cities, the outgoing lines of power stations, the internal power supply of industrial and mining enterprises, and the underwater transmission lines crossing rivers and seas can range from tens of meters, hundreds of meters, kilometers, to thousands of kilometers, it is necessary to connect and extend each batch of cross-linked polyethylene insulated power cables to meet the requirements of design and construction. Secundum, cum industria grid potentiae et transformatione nettarum urbium, proportio cablorum potentiae in lineis elektronis per singulos dies crescit. Qualitate corporis cabulae, qualitate instaurationis cabulae, et qualitate defectus accessorium cabulae quoque continuo crescit, quae reducet reliabilitatem operation is potentiae. Stoga, alta qualitate preventive measures accipientur ad comprehensive improvinem operationem graduum distributionis linearum. Power Cable and Accessories 1. Power cable Power cables are special wires used for transmitting and distributing electrical energy. Figure 1 shows the physical diagram of the power cable, and Figure 2 shows the structural diagram of the power cable. They are commonly used in urban underground power grids, power station outgoing lines, internal power supply of industrial and mining enterprises, and underwater transmission lines crossing rivers and oceans. The main structure of power cables consists of four parts: core, insulation layer, shielding layer, and protective layer. ●9312Core: It is the conductive part of a power cable used to transmit electrical energy, typically composed of copper or aluminum stranded wires. :: 9313; Insulation layer: It is an essential component in the structure of power cables that isolates the wire core from the ground and different phases of the wire core electrically, ensuring the transmission of electrical energy. :: 9314; Shielding layer: refers to the conductor (inner) shielding layer and insulation (outer) shielding layer of power cables with voltage levels of 10kV and above, which is a measure to improve the distribution of electric fields. Pro factum quod conductor cabulae ex pluribus stridiis factus est, superficie conductor is non est gladus, quod potest causare concentrationem agri electricae aut acutem discargendum, et gapum aeris facile formatur inter illum et layer insulationis; Addendum pelliculam semiconductionis material super superficiem conductor is ut formaret corpus circularum, quod est equipotentium cum pulvere conductore et in bona contacto cum insulationis layer, sic evaginantem discargentiam partialem inter conductorem et insulationem layer interiorem pelliculam vocatur. Laer sculptorium semiconductionis materiae additur ad superficiem insulation is layer, qui habet bonum contactum cum latere insulationis et est equipotential cum latere metallis. Ut centerlina, est currens capacitationis sub circumstantibus normalis. Quando occurrit culpa, lapis coperis funt quasi circuit breve circuit currentis ut non efficiat discargationem partem inter layer insulationis et lineam, quod appellatur layer exterius sculptoris. ::9315;Protective layer: It is composed of several parts such as inner sheath, armor layer, and outer coating (or outer sheath), which protect the power cable from the invasion of external impurities and moisture, as well as prevent direct damage to the power cable by mechanical external forces. 2. Associationes kabilis energiae Power cable accessories refer to products that connect cables with transmission and distribution lines and related distribution equipment. Generally, they refer to the intermediate and terminal connections of cables in cable lines, which together with cables form the power transmission network; Associationes Cabulae prima sunt based on the characteristics of cable structure, which can not only restore the performance of cables, but also ensure the extension of cable length and the connection of terminals. accessories Cable are generally divided into terminal connections and intermediate connections. Terminal connections are divided into indoor terminals and outer terminals. Generally, outer terminals refer to outer cable joints, while indoor terminals refer to the joints between indoor connecting cables and electrical equipment; Duos genus intermediarum connexionum sunt: rectum trans et insulatum. In hoc tempore, prima typa accessorium cabulae includent calore shrink, prefabricata, et accessories cabulae frigidae. These three methods all disperse electric field stress control by increasing stress tubes and stress cones to achieve cable operation. This manufacturing method may produce impurities, air gaps, and active interfaces, which affect the insulation performance of cable joints and invisibly reduce the safety and reliability of power grid operation. The most critical technical problem that needs to be solved for cable accessories is to deal with the concentration of electric field at the fracture of the outer semiconductor layer of the cable. Figure 3 shows the distribution of electric field equipotential lines at the cable cutting point. Electrical stress control is to control the electric field distribution and strength inside the cable accessory, that is, to take appropriate measures to make the electric field distribution and strength in the optimal state, thereby improving the reliability and service life of the cable accessory operation. The most serious impact on the reliability of terminal operation is the electric field fluctuation, and the influence of electric field fluctuation at the middle joint of the cable is not only at the shielding and cutting point outside the cable, but also at the insulation cutting point at the end of the cable. At present, there are two main solutions: one is to use parametric electric field stress control tubes, and the other is to use geometric electric field stress control cones. The electric field stress control tube is a flexible tube made of materials with a dielectric constant of 15~25 and a volume resistivity of 1010120m. Figure 4 shows the physical image of the electric field stress control tube, and Figure 5 shows the principle diagram of the electric field stress control tube. The electric field stress control tube is placed on the exterior semiconductive fractura superficie ut formam interfacem cum diversis dielectricis constants in fractura superficie, causing the power lines to refract at this interface, thereby achieving the effect of dispersing electric field stress. Nontamen, quasi alta dielectric a constant quae in electelectricis stress control tuba theoretically habet maius dielectricis constant, capacitance current causae per excessive dielectricis constituet et generata magna multa heat, quo promotet studium stress control materialis. At the same time, as a polymer multiphase structure composite material,Constantia dielectric a et resistentia volumine contradictionis sunt in se materio. Quanto altior constantia dielectrica est, inferior resistentia voluminis correspondente diminuet. Constantia parametrorum electricarum materiae saepe a diversis factoribus, sicut temperatura External environmental changes will cause stress control materials to age. After aging, the volume resistivity of the stress control material will undergo significant changes. As the volume resistivity increases, the stress control material becomes an insulating material, which cannot improve the electric field. The volume resistivity decreases, and the stress control material becomes a conductive material, causing cable failures. The electric field stress control cone is a structure with a trumpet shaped shape, which is formed by mold production. Figure 6 shows the physical image of the electric field stress control cone, and Figure 7 shows the principle diagram of the electric field stress control cone. The electric field stress control cone is overlapped at the outer semi conductive fracture of the cable, and is also in a low potential position like the outer conductive layer, which is equivalent to extending the outer semi conductive fracture, so that the power lines originally concentrated at the outer semi conductive fracture will be evenly distributed along the geometric shape of the stress cone, improving the electric field distribution, reducing the possibility of corona generation, reducing insulation damage, but increasing the volume of the cable; Due to the fact that the electric field stress control cone is made using molds in the factory, the cold shrink type needs to be expanded first, while the prefabricated type needs to be expanded on site, which changes the original design dimensions and causes the support tube to be formed early, resulting in an uneven inner surface of the product and instability of the product. This cannot solve the electric field distribution well, leading to accidents. At present, power cables are usually connected to the metal cores of two power cables by crimping or screwing the middle connecting pipe to achieve connection extension, and the radial electric field is controlled by electric field stress control tubes or electric field stress control cones. However, the crimping or screw fastening method of the intermediate connecting pipe has weak structural connection, is prone to breakage, has irregular shapes, deformation, cannot form concentric circles, and discharges at sharp corners of the connection. The air gap is large, the physical and mechanical properties are small, the radial electric field loss is large, and the heat generation is large, which seriously affects the current carrying capacity and mechanical performance of the power cable. Moreover, the connection construction is cumbersome and complex; Due temperaturi, frigido, et dissolutiones in accessories prefabricatae cable, intrinsecus sunt interiores aeris, resultentes in partial discharge quae dissipat et worst, ducentes ad insulationem dissipationem; Fenomenum absorptionis moisturiae aut ingressae aquae, ubi effecti respirationis et electrophoresis aquae aut moisturis introiunt interiorem interioris ligni interioris, causans acutem diminutionem resistentis interfacii et resultantur in discargentiam superficiis; insulationis fortitudo diminuit aut aetates, et resultat in carbonizationem dendriticam discharge et accidentes triggere, quasi volantem et electricam disruptionem. Through a years of data analysis by the power grid operation and maintenance department and on-site testing requirements for partial discharge testing in CL/T1576-2016 (6-35 Asa neqneneneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneqneDistributione regionis electricae accessorium cabularum multo complexior est quam ipsorum cabularum, et radix causa impactionis super universam securitatem et reliabilitatem systemarum cabularum prima in accessoriis cabularum est. Therefore, the power market urgently needs cable injection fusion splicing X (CM) to restore cable structure and overcome the above-mentioned problems. Contents The purpose of this technology is to provide a cable fusion joint technology, which has the advantages of firm connection, high conductivity at the connection point, low radial electric field loss, low electrical energy loss, high current carrying capacity, copper core fusion, cable bending without worrying about cable dragging, and simple and fast connection construction without occupying municipal land. It fully restores the main structure of the cable, is approximately the same diameter as the cable body, and reaches the production level of the factory. At present, the production of cable joints at home and abroad generally adopts heat shrinkage, cold shrinkage, and prefabrication methods. These three methods all add stress pipes and stress cones to disperse electric field stress control and achieve cable operation. This production method may produce impurities, air gaps, and active interfaces, which affect the insulation performance of cable joints and invisibly reduce the safety and reliability of power grid operation. The cable fusion joint technology completely solves the fundamental problem of active interface between cable accessories and cable insulation, effectively reducing faults in cable lines and their intermediate joints, and providing higher electrical stability and safety reliability for cable systems. The cable fusion joint technology uses equal diameter conductor fusion welding connection for cables, and the inner and outer shielding layers and insulation layers are restored according to the cable structure. Cable fusion joint technology is a new type of technology that has many advantages over ordinary cable intermediate intermediate joint production methods. It "regenerates" the cable structure step by step to restore the cable to a new cable state. The cable intermediate joint produced by this technology, as analyzed in Tabula 1, has a resistance measurement of 17.97 μm. n. a quo est de 17.36 μm. a quo ipsum ipsum quo facit in a new cable state.per benedictionem quasi ignorare potest. Resistentia DC cordis coperii purissimi alta est. Ex mensa 2 analisi, ratio tensilis fractionis fortitudinis coperii cordis ferentis ad corpus est 95%, et tensilis fortitudinis conductor is cordis coperii ferentis attinget illud corporis. Plus quam 94% fortitudinis, cum parva diminutione et quasi restituentem originalis fortitudinis mechanicae, potest significantem reducere frekvenciam linearum defectus causarum ab intermedias lignis cabilis。电缆模注熔接接头

Tecnologia fusione Cable involve core welding and core grinding; Lacus semiiconductorum conflavit et diameter aequal restituere intro cablo; Melting and recovery of the main insulation layer, grinding and equal diameter recovery of the main insulation layer; Multi procedentibus, quales exterior semiconductor layer conflavere et restituere exteriorem partem cabulae, necesse sunt ut cabulam restituerent in statum originali eius. Maximum utilitatem huius technologiae est utilis fusionis tecnologiae ut conflaveret et connectare corda coperiorum, clypeum interius, capitem insulationem, et exteriorem clypeum in unum, elevantem effectum aquarum et insulation is cabulae et extendentem vitam servitutis cabulae intermediae coniunctionis. According to the requirements of cable raw materials, main structure, and specifications, the extrusion molding injection insulation cross-linking process is used to shield the cable and the electric field distribution characteristics of the cable body. There is no additional stress cone, and the stress insulation and external shielding are melted and combined to form a cable with no inherent characteristics. If not handled properly at the copper core cable joint, it will cause significant safety hazards; Conseptus coniunctis perfecti restituentium cum structura pipes et nulla interfessa aeris interfessa. In hoc tempore, technology of restoring the cable body connection of the main power supply and distribution cable fusion joint of State Grid Power Supply Company has greatly improved the conductivity and tensile performance of the processed joint compared to the copper cable itself. The wire core welding of cable melting technology has a simple structure setting, easy operation, no need for external power and heat sources, and low welding cost. It is fast in seconds and does not produce bubbles in the welding section. The mold can be reused more than 200 times, and the quality is stable and reliable. It is very suitable for the welding operation of field cable cores, and is suitable for the protection of equal core and unequal core connections between copper cores and copper cores, aluminum cores and aluminum core cables. Through years of data analysis by the power grid operation and maintenance department and partial discharge testing of cable oscillation waves, it is found that cable failures often occurre at the intermediate joints of cables. A reason of the unqualified manufacturing process and insufficient insulation performance of the intermediate joints, cable intermediate joint failures occurre; Si signatio intermediae coniuncti cabilis pauper est, potest causare humilitatem et insulationem intermediam coniunctem cabilis dissipationem. Distributione camporum electricorum accessorium cabularum multo complexior est quam illud ipsum cabulae, et impactus super securitatem et reliabilitatem universae systemae cabulae prima ex accessoriis cabulae venit. Sed, tecnologia CMJ pro restiture connexionem corporis cabulae potest solure hoc problemam completam. Haec tecnologia CMJ pro restiture corporis cabulae est conceptum faciendi cabulae sine connexiones. Haec interruptio technologica secura operationem altae voltationis et ultra altae voltationis cabularum et solutionem technologiae altissimae flexibilis coniunctibus submarines et coniunctibus optimis et negatibus DC cabulae flexibilis solvabit; This time, a new type of cable fusion technology is adopted to gradually restore the various structures of the cable, achieving absolute sealing effect. Asia Europe Electric guarantees the safe operation of the cable intermediate joint made by fusion technology and the same lifespan of the cable without failure, providing a major technological leap for the safety and reliability of the cable system in the power grid, and has significant practical milestone significance. Tecnologia fusione Cable involve core welding and core grinding; Lacus semiiconductorum conflavit et diameter aequal restituere intro cablo; Melting recovery of the main insulation layer, polishing of the main insulation layer, and equal diameter recovery; Multi procedentibus, quales exterior semiconductor layer conflavere et restituere exteriorem partem cabulae, necesse sunt ut cabulam restituerent in statum originali eius. Maximum utilitatem huius technologiae est utilis fusionis tecnologiae ut confleretur et connectat corda coperiorum, clypeum interiorem, insulationem principalem et exteriorem clypeum in unum corpus, effectionem aquarum et insulation is cabulae et vitam servitutis intermediae connexionis extendit. According to the requirements of cable raw materials, main structure, and specifications, the extrusion molding injection insulation cross-linking process is used to melt and combine cable shielding, insulation, and external shielding to form a cable electric field shielding body with consistent body characteristics, no stress treatment required, and no air gap interface. Distributione regionis electricae CMJ est perfecto equivalenta propiedantibus distribution is regionis electricae corporis cabulae, sine conibus extra stressis, structuras tubae stressi, et conceptum coniunctibus perfectis restituentibus sine intervilibus aeris. At present, the cable trenches for the main power supply and distribution of State Grid Corporation of China use copper core cables with a cross-section of 300mm or more and 630mm. If the copper core cable joints are not handled properly, it will cause significant safety hazards; Technology of restoring the cable body connection through cable fusion joints has greatly improved the conductivity and tensile properties of the processed joints compared to copper cables themselves. Design Principles The safety and reliability of cables in practical applications are much higher than the safety and reliability of the cable accessories they are connected to. From its structural principle, the cable body is composed of insulation layers of uniform thickness, inner and outer semiconducting layers, and conductors of equal diameter to form a cylindrical and stable cable body. Therefore, the customization of the structure makes the electrical performance of the cable, that is, the electric field distribution, more stable and uniform, making the cable have higher electrical safety and reliability and longer service life; Base on this principle, CMJ fully restores the original cable body structure at the cable joint on the site, achieving a high safety state where the electrical performance of the CMJ connected to the cable is equal to that of the cable body. The cable conductor, inner semiconductive layer, main insulation, and outer semiconductive layer at the CMJ joint are fully restored to the original structure of the cable, without the assembly structure of stress cones, stress tubes, or foreign objects, making the cable joint a complete cable without joints, achieving the concept of restoring the cable body structure. The insulation and semiconducting materials used in CMJ are made of the same material as those used in the production of cables. The combination of CMJ and cables has good compatibility and stability in terms of chemical, physical properties, and structure. The thermal and mechanical properties of the molten interface have been extensively tested and examined. Omnes praecepta standard complicitur; And the CMJ running in Dali also demonstrates its superior practicality. Haec tecnologia in locum est secundum copper corum, inter shielding, insulation, inter shielding, insulation, inter shielding structures, speciationes, et similiter shielding et insulationem et insulationem de cable, ut attineretur continuum et equivalent similiter et equivalent similiter similiter et equivalent qui similiter similiter similiter et similiter similiter similiter et similiter similiter similiter electricae shielding corporem cum oriumque cable, ita ut shielding et insulationem confusantur et confusantur absque aeris inter aeris, formantur tota structures consistenti cum cable sine manifesta similis similis similis similis similis similiter.Elektricitatis CMJ stabilis et fidelis operation is. Features Design Caracteriae CMJ et cablis interligatis similis sunt, cum securitate altissima et fidelitate comparatis ad cables conligatis in terms of electrical performance; Technologia productionis et processus CMJ differunt ab productione cablorum, sed principes et standardes in productione procedentibus constant; The insulation level, current carrying capacity, mechanical characteristics, sealing effect and other performance of CMJ fully meet the requirements of the cable that matches it, and can ensure safe operation in harsh environments for a long time, fully complying with the relevant standards of international IEC and national GB; CMJ etiam in connexionem integralem cum eiusdem diametro quam insulationem cabulae secundum necessitates diversarum utentium, sicut methodo strukturae quam connexiones cabulae submarines necessitat aedem diametrum quam cabulam connexium habere; Ex forma strukturae CMJ consistit cum structura cabulae, non potest assemblare objectos mobiles, et coniunctos insulation is habet et rectos per coniunctos interconectionem accipere. Safety conditions and environment/Comparison of Cable Intermediate Connections (1) Must have construction conditions such as a 220V power supply and a work shed. (2) During installation, the ambient temperature should be above 10C and the relative humidity should be 85% or below; To avoid condensation and moisture on the insulation surface, remedial measures should be taken when the ambient temperature is low or the humidity is too high. (3) If water or moisture is found in the cable, remedial measures should be taken, otherwise construction cannot be carried out. (4) Construction must be carried out in a closed shed during rain, foggy, wind and sandy weather. (5) For the protection of patented technology, it is only allowed to view or take photos of the product after the exploitation of cables, wire core welding, and main insulation cross-linking molding are completed. Certificatus qualificationis Acceptationes et precationes Indicate numerum ordinem, nominem produktorum et modelum quando ordinem positum est. Post apertum cistam, numera conformes produktos secundum mensam consequentem. Lege, quaeso, proceduram installationis produktorum, et sequere proceduram ante installationem et utilizationem stricto. Batch inventory, products are moisture-proof, dustproof, pressure resistant, and puncture resistant. Service Commitment ■ porta ad ostium servitutem, servitutem online+telephonum consilium aut fax; Within 2 hours of receiving user feedback, a response will be made. For urgent issues, service personnel from Guangdong Province will arrive at the scene within 24 hours, and those from outside Guangdong Province will rush to the scene within 48 hours. The product will be served for life. Ensure that the sent staff complies with various rules and regulations on the site and have the obligation to train operation and maintenance personnel for customers; Timely provide all technical information specified in the contract or agreement to the customer; Strengthen communication with users, develop product quality tracking information for users, conduct follow-up on products, and ensure long-term safe operation of products; Quando problem a est in ullo stagno, faciemus solutionem usuariorum problemas et servos securos, fidelis, alta qualitate et satisfactores ab initio usque ad finem providimus.

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