3119results about "Cable junctions" patented technology

The invention discloses a low-voltage cable branch box with protection structures at wire inlets, and belongs to the technical field of cable branch boxes, the low-voltage cable branch box comprises a box body, the interior of the box body is fixedly connected with a mounting rack for mounting electrical appliance elements through bolts, the bottom of the box body is provided with a plurality of wire inlets distributed in a linear array, and the wire inlets are arranged in the box body. The bottom of the inner wall of the box body is fixedly connected with a fixing frame corresponding to each wire inlet, and the front and back surfaces of the fixing frame are movably provided with plugging plates in a penetrating manner. The plugging plate is arranged to plug the wire inlet, and the gap sealing mechanism is arranged to fill and seal the gap between the cable and the plugging plate, so that external humid gas cannot enter the box body from the wire inlet, and when the sealing door of the box body is in a closed state, the whole branch box can be in a totally closed state; dust or humid gas in external air is prevented from entering the branch box, and electronic components in the branch box are well protected.

The invention relates to a cable branch box, and relates to the technical field of branch boxes, the cable branch box comprises a box body and a box door installed on the box body, and the vertical side surface of the box body is provided with a heat dissipation port; an upper protective cover with an upward opening is fixedly arranged on the inner edge of the opening of the heat dissipation opening of the box body, a lower protective cover with a downward opening is fixedly arranged on the outer edge of the opening of the heat dissipation opening of the box body, a barrier plate is fixedly arranged on the edge of the opening of the lower protective cover, and a plurality of barrier holes are formed in the barrier plate; according to the cable branch box, in the application process of the cable branch box, the possibility that external impurities enter the box body is reduced through the arrangement of the upper protective cover, the lower protective cover and the blocking holes; and high-temperature gas in the box body can be discharged to the outside through the heat dissipation openings and the blocking holes, so that circulation of gas inside and outside the box body is realized, and the heat dissipation performance of the box body is ensured.

The invention belongs to the technical field of charging pile cable connection, and particularly relates to connecting equipment and a cable for a new energy automobile charging pile, and the connecting equipment comprises an automatic separation joint and a winding mechanism which are arranged on the charging pile; the winding mechanism is installed on the charging pile through the clamping mechanism, the clamping mechanism is provided with a fixed base and an elastic base, the fixed base and the elastic base form a separation path facing the cable pull-out opening, and the winding mechanism is formed by splicing a first winding disc and a second winding disc; the winding mechanism comprises a first winding disc and a second winding disc, the first winding disc and the second winding disc are each provided with a sliding groove which surrounds the center shaft and is arranged in a radial shape, and sliding bases are slidably connected into the sliding grooves. Sufficient time is provided for rapid separation of the charging gun cable connector and the charging pile cable connector, the pulling force of the cable does not act on the charging pile, and the charging pile does not bear the acting force except the preset separation value.

The invention relates to the technical field of cable installation, and discloses a buried cable branch box for electric power engineering, which comprises a box body, a branching terminal, a protection assembly, a stabilizing assembly and an auxiliary assembly, and is characterized in that the box body is formed by splicing a fence, an upper cover plate and a lower cover plate, one side of the fence is provided with a main line interface, and the other side of the fence is provided with a plurality of branching interfaces; a branching terminal is installed in the box body, and stable side plates are fixed on two sides of the branching terminal along the length direction of the branching terminal. The protective shell is mounted on the outer side of the branching terminal, the stabilizing assembly flush with the front ends of the pressure transmission interface and the branching interface is mounted on the protective shell, and the cable and the connected interface are supported through the stabilizing box, so that the problem of sagging and breakage of the cable joint is avoided, and meanwhile, the service life of the cable is prolonged. And an upper elliptical roller and a lower elliptical roller which are mutually extruded on the cable are mounted in the stabilizing assembly, and when the cable is subjected to traction force, the elliptical rollers rotate under the frictional resistance of the elliptical rollers and the surface of the cable, so that the cable is clamped, and the phenomenon of cable separation is effectively prevented.

The invention provides an intelligent low-voltage cable branch box, and belongs to the technical field of cable branch boxes. The self-adaptive air supply box comprises a box body, a drying sealing assembly, a self-adaptive air supply assembly and a dehumidification assembly, through pushing of the U-shaped clamping jaw and inflation of the annular air bag, tight sealing between the cable and the branch box is achieved, meanwhile, the problem of sealing performance reduction caused by external temperature or humidity changes can be automatically sensed and dealt with, gas is pushed into the movable cavity and the annular air bag through automatic upward movement of the piston, automatic gas supplementing is achieved, and the service life of the cable is prolonged. The reliability of the sealing device is enhanced; the moisture change on the surface of the cable can be automatically sensed, the moisture is effectively collected and discharged through the cooperative action of suction and exhaust of the piston, meanwhile, the drying part is heated through the electric heating block, comprehensive dehumidification treatment is achieved, a drying agent does not need to be frequently replaced, and the maintenance cost is reduced; through double guarantee of efficient sealing and intelligent dehumidification, the electrical fault risk of the cable is reduced, and the service life of the cable and the branch box is prolonged.

The invention relates to the technical field of cable branch boxes, and discloses a cable branch box which comprises a box body and a box door, the box door is rotatably connected to the box body, a placement groove is formed in the box body, a through hole communicated with the placement groove is formed in the box body, and an elastic plate used for completely blocking the through hole is arranged on the through hole. According to the device, the through hole is blocked through the elastic plate, so that small animals are difficult to directly pass through the through hole to enter the placement groove; when a worker cuts the elastic plate, the cable enters the placement groove through the elastic plate, and the elastic plate abuts against the outer surface of the cable, so that the elastic plate can limit the distance between the cable and the through hole, thereby reducing the possibility that a small animal climbs into the placement groove along the cable, and further reducing the damage of the small animal to the electrical component.

The utility model discloses a locking mechanism for a cable joint. The locking mechanism comprises a mounting seat and a connecting pipe, a locking assembly is arranged on the connecting pipe; the number of the locking assemblies is at least two, the at least two locking assemblies are evenly distributed in the circumferential direction, an installation groove is formed in the side wall of the connecting pipe, the locking assemblies are installed in the installation groove, each locking assembly comprises a movable locking strip and an elastic piece, the lock hook is arranged on the movable locking strip, and in the normal state, the elastic pieces provide elastic force for the movable locking strips to enable the lock hook to stretch into a pipe cavity of the connecting pipe. The outer side of the connecting pipe is rotatably sleeved with a sleeve, driving parts corresponding to the movable locking strips are arranged on the inner side of the sleeve, when the sleeve is rotated, the driving parts apply pressure to the movable locking strips to control the movable locking strips to move, and then the lock hook moves outwards and retreats from a pipe cavity of the connecting pipe. According to the utility model, the locking mechanism is reasonable in arrangement and simple in structure, can realize rapid locking and unlocking of the plug-in and the cable joint, is convenient to operate, and has good practicability and generalizability.

The invention relates to the technical field of cable connectors, and discloses a cable connector applied to a new energy electrical cabinet, which comprises a first joint structure capable of being connected with a corrugated pipe, one side of the first joint structure is provided with a second joint structure capable of forming a sealing structure with an embedded pipe, and the first joint structure comprises a first joint main body; a first inner connecting pipe is arranged at one end of the first connector body, a pressing nut is connected to the first inner connecting pipe in an external thread mode, a limiting ring is arranged on the inner circumferential face of the pressing nut, and a hose inner cup is inserted into the first inner connecting pipe and comprises a bent part capable of being inserted into the first inner connecting pipe. One end of the bending part is connected with an outer edge located between the limiting ring and the first inner connecting pipe, the other end of the bending part is connected with a mounting pipe capable of being inserted into the corrugated pipe, the mounting pipe is located in the outer edge, and a first clamping ring located between the outer edge and the limiting ring is arranged in the pressing nut; the electric cabinet has the effect of improving the sealing connection effect between the cable and the electric cabinet.

The invention belongs to the technical field of drilling tools, and relates to an anti-loose self-locking through cable drill rod and a locking method thereof.The drill rod comprises a drill rod body, and supporting seat mounting holes are formed in the two ends of an inner cavity of the drill rod body; the first supporting seat and the second supporting seat are arranged at the supporting seat mounting holes in the two ends of the drill rod body respectively; the first supporting seat and the second supporting seat are both of a circular ring structure, the outer ring of the circular ring structure abuts against the inner wall of the drill rod body, and the inner ring abuts against the outer ring of a through cable installed in the drill rod body. At least one of four contact surfaces, in contact with the inner wall of the drill rod body and the outer ring of the through cable, of the first supporting seat and the second supporting seat is selected as a relatively rotatable contact surface, and the other three contact surfaces are used as circumferential fixed contact surfaces; the circumferential fixed contact face is embedded into the sliding groove through the anti-rotation protrusion for circumferential locking, and the relative rotating contact face is subjected to circumferential locking through a self-locking mechanism after the through cable is installed, so that self-locking of the drill rod body and the through cable is achieved.

A connection arrangement includes a composite pane composed of a first pane and a second pane, which are connected to an intermediate layer, two electrically conductive structures, in particular two mutually opposed surface electrodes of an electro-optical functional element that are arranged between the first pane and the second pane, and a flexible flat cable having electrical conductor tracks, includes a first connection region at a first end and on a first side of the flat cable, wherein the first connection region has a contact point of at least one conductor track, at least one second connection region at the first end and on the first side of the flat cable, wherein the second connection region has a contact point of at least one conductor track, and a third connection region with contact points of the conductor tracks at a second end of the flat cable.

The invention discloses a low-voltage circuit cable convenient and quick to connect, which relates to the technical field of low-voltage cables, and comprises a first low-voltage circuit cable body which is arranged at the left side end of an outer protection connecting end, forms circuit connection with a second low-voltage circuit cable body through the outer protection connecting end, and is used for forming a complete closed electrical circuit, under the cooperation of the magnetic connection end and the magnetic fixing end, the whole cable butt joint operation is realized, the connection process is greatly simplified, the skill requirement on operators is reduced, the mechanical stability in the connection process is ensured, the cable is prevented from being accidentally broken, the stability of internal electrical connection is also ensured, and the service life of the cable is prolonged. According to the low-voltage circuit cable connection system, the power or signal transmission is ensured not to be interfered, the viability of the whole low-voltage circuit cable connection system in a severe environment is improved, the electrical performance of cable connection is improved under the cooperation of the distance adjusting control assembly, and the potential safety hazards of heating, electric energy loss and the like caused by the increase of contact resistance are reduced.

The utility model relates to the technical field of cold contraction type cable accessories, in particular to a cold contraction type cable accessory which comprises a protective shell, a first limiting baffle and a second limiting baffle are arranged at the two ends in the protective shell, an ejector rod is connected between the first limiting baffle and the second limiting baffle in a sliding mode, and one end of the ejector rod is fixedly connected with a clamping block. A plurality of control teeth are arranged on one side of the second limiting baffle, a second limiting sliding groove is formed in the position, close to the control teeth, in the protection shell, a stopping block is slidably connected into the second limiting sliding groove, and clamping teeth are arranged at the bottom of the stopping block. One-way locking is achieved through interaction of the control teeth and the clamping teeth, when the control handle is rotated, the clamping blocks extrude inwards in the protection shell through the second limiting baffle, the control grooves and the limiting bolts, the cold shrink pipe is fixed, and the attaching tightness between the cold shrink pipe and a cable is prevented from being reduced.

The invention discloses a cross-linked polyethylene insulated control cable, and relates to the technical field of cross-linked polyethylene insulated cables, the cross-linked polyethylene insulated control cable comprises an insulating shell, a notch is formed in the middle of the top surface of the insulating shell, a sealing ring and a protective sleeve are arranged in the middle of the left side and the right side of the insulating shell, and the protective sleeve is fixed on the inner wall of the sealing ring; the inner wall of the protective sleeve is provided with a tear-resistant filler, the inner wall of the tear-resistant filler is provided with a plurality of cross-linked polyethylene insulating layers, the inner walls of the cross-linked polyethylene insulating layers are provided with copper cores, the ends, close to each other, of the copper cores are fixedly connected, the insulating tape is wound on the outer walls of the copper cores, and the outer walls of the copper cores are fixedly connected with the cross-linked polyethylene insulating layers. The calcium chloride block in the top cover is conveniently replaced by a maintainer, so that the problem that the maintenance effect of the crosslinked polyethylene insulated control cable is poor due to the fact that the calcium chloride block is inconvenient to replace in the maintenance process of the crosslinked polyethylene insulated control cable is solved.

The utility model discloses an umbrella-shaped electrical protective sleeve, and particularly relates to the field of electrical protective sleeves, the umbrella-shaped electrical protective sleeve comprises two protective clamping plates, the two ends of the protective clamping plates are symmetrically and fixedly connected with limiting ring plates, the two sides of the two ends of the protective clamping plates are symmetrically and fixedly connected with fastening screw plates, and the middle parts of the fastening screw plates are provided with clamping grooves; a clamping column is arranged in the middle of the fastening screw plate, and the two ends of the clamping column are symmetrically and fixedly connected with anti-skid clamping plates. According to the utility model, the protective clamping plates are clamped to clamp and protect the connection part of an electrical element or a cable, and the telescopic pipe is telescopically moved by pulling the annular plate, so that the protection length can be adjusted, and adjustment and use can be conveniently carried out according to needs; the connecting position of the telescopic pipe and the protective clamping plate is heated and wrapped through the thermoplastic umbrella cover, the connecting protective effect of the telescopic pipe and the protective clamping plate is improved, the connecting strength of the telescopic pipe and the protective clamping plate is improved through the connecting ring, the use effect is improved, and adjustment, installation and use are convenient.

The present invention relates to an elastomeric seal that embraces the electrical conductors that pass through the wellhead and comprises an upper cylindrical portion, a lower frustoconical portion, one to three through holes longitudinally crossing the seal and one to three longitudinal cuts that go from the periphery of said through holes to the seal periphery. In an alternative of the invention, the seal comprises more than one through holes, one longitudinal cut that goes from the periphery of one of the through holes to the periphery of the seal and one or two longitudinal cuts that go from the periphery of one of said through holes to the periphery another through hole.

The invention relates to the technical field of power transmission, and discloses an anti-breaking insulated overhead conductor mounting structure, which comprises an insulated overhead conductor body and a mounting frame, and is characterized in that two conductor anti-pulling parts are symmetrically mounted on two sides of the top of the mounting frame; the lead anti-pulling part is used for compressing and fixing the insulated overhead lead body; a buffer part is mounted on the lead anti-pulling part, and the buffer part is used for providing a buffer space when the insulated overhead lead body is pulled; a protection part is mounted on the mounting frame and is used for surrounding the joint of the two insulated overhead conductor bodies on the inner side; through the arrangement of the buffer component, when the insulated overhead conductor body is pulled by external force, the second pulley is pressed by the insulated overhead conductor body and then moves downwards, the rotating rod rotates along the hinge point with the conductor supporting rod, and the rotating rod applies force to elastically compress the spring piece; therefore, the insulated overhead conductor body can be pulled for a certain distance.

The invention discloses a prefabricated branch cable, and relates to the technical field of cables. The device further comprises a wire inlet pipe and a protective shell. A main cable is fixedly inserted into the wire inlet pipe, the bottom end of the main cable penetrates through the bottom end of the wire inlet pipe, a branch cable is connected to the side face of the main cable, the joint of the branch cable and the main cable is wrapped with a protection piece, an installation cavity is formed in the protection shell, and the protection piece is fixedly connected into the installation cavity. The top end of the wire inlet pipe penetrates through the top wall of the protection shell. According to the prefabricated branch cable, the protection shell, the mounting cavity and the first buffer assembly are arranged, so that when the branch cable receives external pulling force, the arc-shaped plate elastically slides, the situation that the joint of the branch cable and the main cable is directly subjected to large pulling force and is damaged or even broken is avoided, the pulling resistance of the prefabricated branch cable is ensured, and the service life of the prefabricated branch cable is prolonged. Therefore, the safety and the reliability of the prefabricated branch cable are effectively improved.

The utility model provides a moisture-proof cable joint auxiliary assembly, and the assembly is characterized in that two cable pressure heads are arranged and are respectively arranged at the positions, close to a cable joint, of two cables in a sleeving manner; the number of the compression nuts is two, and the compression nuts are installed on the cable pressing head so as to apply inward pressing force to the cable pressing head. The male joint sleeves a cable joint at the end part of one of the cables; the female joint sleeves a cable joint at the end part of the other cable and is in sealed connection with the male joint; the two pressing rings are arranged at the positions, close to the cable connectors, of the two cables respectively in a sleeving mode and connected with the male connector and the female connector in a one-to-one corresponding and inserted mode. The number of the cylindrical waterproof films is two. According to the invention, a plurality of fixing parts and a waterproof film are used to realize sealing of cable joints, and a moisture-proof purpose under an environmental condition with a large temperature difference is realized; and the overall installation is simple and fast, repeated use can be achieved, and the installation cost is reduced.

The present invention discloses a high-voltage cable grounding box, comprising a box body and a wiring assembly connected to a high-voltage cable, wherein the wiring assembly is arranged inside the box body; the wiring assembly comprises a busbar and a plurality of rectangular wiring heads, wherein the plurality of wiring heads are arranged transversely on the busbar; and further comprising a heat dissipation assembly, wherein the heat dissipation assembly comprises a heat dissipation assembly, a driver and a cold row, wherein the driver and the cold row are arranged outside the box body, the heat dissipation assembly is detachably mounted on the busbar, the heat dissipation assembly is provided with a plurality of matching grooves for matching with the wiring heads, a flow channel for coolant to flow through is provided in the heat dissipation assembly, and the heat dissipation assembly, the driver and the cold row are connected in an end-to-end loop in sequence. The present invention achieves the purpose of heat dissipation by arranging a heat dissipation assembly, wherein the heat dissipation assembly comprises a heat dissipation assembly, a driver and a cold row, and the driver drives the coolant of the heat dissipation assembly to circulate between the cold row, the driver and the heat dissipation assembly, while achieving good heat dissipation effect and not damaging the sealing structure of the box body.

The invention relates to the technical field of submarine cable laying, and provides a submarine cable connecting device, which comprises a connector box internally provided with a fiber disc, the fiber disc is provided with a plurality of cable grooves, rollers are arranged along the extension direction of the cable grooves, and the rollers are tightly attached to a cable and are in rolling connection with the cable; and the monitoring assembly is arranged on the connector box and comprises a sensing module and a communication module, the sensing module is connected with the roller, and the sensing module acquires state information of the roller and sends the state information to the communication module. The cable detection assembly is arranged to detect the connection state of the cable in real time, and the cable passing assembly is arranged to fix the cable. When the cable slips, the sensing module can obtain the state information of the roller and send alarm information to the upper computer, so that maintenance personnel can maintain the cable in time conveniently. And the situation of communication interruption is avoided.

The invention relates to the technical field of fireproof cables, and particularly discloses a fireproof cable heat dissipation joint device which comprises a joint sleeve, the two ends of the joint sleeve are symmetrically and fixedly connected with bayonet sockets, the bayonet sockets are connected with the ends of a fireproof cable, and the inner ends of the bayonet sockets are fixedly connected with copper cores. Wherein the two bayonet sockets are fixedly connected through a copper core, and the heat dissipation assembly is fixedly installed on the connector sleeve. And the protection assembly is fixedly mounted on the outer surface of the joint sleeve. According to the heat-dissipation joint device of the fireproof cable, the heat dissipation assembly is arranged, so that the joint sleeve can be automatically cooled by utilizing pressure change during working, and the problem that the joint sleeve is easily in a high-temperature state for a long time to cause potential safety hazards during working due to slow ventilation in a mine is solved; and the cooling efficiency is greatly improved by dividing the interior of the joint sleeve into two cavities for circulating cooling.

The application discloses a crosslinked polyethylene insulated control cable and relates to the technical field of crosslinked polyethylene insulated cables.The application comprises an insulating shell, a protection sleeve and an insulating adhesive tape.The middle of the top surface of the insulating shell is provided with a notch, and the middle of the left and right sides of the insulating shell is provided with a sealing ring.The protection sleeve is fixed on the inner wall of the sealing ring.The inner wall of the protection sleeve is provided with tear-resistant filling.The inner wall of the tear-resistant filling is provided with a plurality of crosslinked polyethylene insulation layers.The inner wall of the crosslinked polyethylene insulation layer is provided with a copper core.The copper core is fixedly connected at the end close to each other.The insulating adhesive tape is wound on the outer wall of the copper core.The calcium chloride block in the top cover can be conveniently replaced by maintenance personnel, so that the problem that the crosslinked polyethylene insulated control cable is inconvenient to replace the calcium chloride block during maintenance and causes poor maintenance effect of the crosslinked polyethylene insulated control cable is avoided.

A communication cable connector connecting device comprises an upper semicircular pipe and a lower semicircular pipe, the upper semicircular pipe and the lower semicircular pipe form a transverse pipe, three coaxial annular dovetail sliding grooves are formed in the inner circumference of the transverse pipe, two semicircular dovetail sliding blocks are installed in each annular dovetail sliding groove in a sliding mode, and semicircular rings are fixedly installed on the inner sides of the dovetail sliding blocks respectively. The cable connector is simple in structure and ingenious in conception, a protective shell is formed on the outer side of the cable connector through the upper semicircular pipe and the lower semicircular pipe, the upper semicircular pipe and the lower semicircular pipe can be rapidly connected, self-locking is formed through the fastening force on a cable, and after the cable is fastened, the upper semicircular pipe and the lower semicircular pipe cannot be opened; meanwhile, the fastening rope is used for winding and fastening the cable, the fastening rope can be better attached to the cable, the cable fixing device is suitable for fixing cables of different diameters, opposite pre-tightening tension can be formed at cable joints, the cable joints are well connected, meanwhile, the pre-tightening tension is used for buffering the external tension to the cable, and damage to the cable is reduced.

A method of building a joint insulation of a power cable joint including a conductor joint connecting a first conductor of a first cable length to a second conductor of second cable length, the method including: a) winding a first electrically insulating tape around an inner semiconducting layer that covers the conductor joint so that the first electrically insulating tape connects a first cable length insulation layer of the first cable length to a second cable length insulation layer of the second cable length, to form an inner insulation layer of the joint insulation, and b) winding a second electrically insulating tape around the inner insulation layer, so that the second electrically insulating tape connects the first cable length insulation layer to the second cable length insulation layer, to form an outer insulation layer of the joint insulation, wherein the first electrically insulating tape has a higher peroxide content than the second electrically insulating tape, and c) crosslinking the joint insulation.

The invention discloses a full-dry type high-voltage cable terminal, and relates to the technical field of cable terminals, the full-dry type high-voltage cable terminal comprises a sleeve, a wiring assembly, a supporting assembly and a cable, the sleeve is provided with a first end and a second end which are opposite to each other, a sleeve-shaped insulator is inserted into the inner side of the sleeve, a gap is reserved between the insulator and the sleeve, a sleeve-shaped semi-conductor is embedded into the inner side of the insulator, and the sleeve-shaped semi-conductor is connected with the wiring assembly. The through hole of the insulator and the through hole of the semi-conductor jointly form a wire passing channel, a filling layer is further arranged in the sleeve, the filling layer is located between the insulator and the sleeve to fill the gap, and the filling layer further extends towards the first end of the sleeve; the wiring assembly is arranged at the first end of the sleeve; the supporting assembly is arranged at the second end of the sleeve; the cable sequentially penetrates through the supporting assembly and the wire passing channel, and the cable is electrically connected with the wiring assembly. The full-dry type high-voltage cable terminal is provided with the solid insulating layer, the sleeve does not need to be filled with liquid silicone oil, and installation is easy and convenient and is not limited to vertical installation.

The invention discloses a sealing joint and a cable installation method, and belongs to the technical field of petroleum drilling equipment, the sealing joint comprises a connecting joint part, an upper joint part and a lower joint part, and a third interval is defined by the inner wall of the connecting joint and the axial end faces of the upper joint part and the lower joint part; and the clamping sleeve assembly is assembled in the third section. When the clamping sleeve component and the clamping sleeve seat body in the third section are assembled, the first contact surface and the second contact surface clamp a steel wire layer of the cable so as to realize hanging and clamping of the cable, and the safety and the reliability are high.

The invention belongs to the technical field of cable connection, and particularly relates to a cable intermediate joint protection device applicable to extreme events, which comprises an upper shell, a lower shell, a secondary explosion-proof assembly and an arc extinguishing assembly, the upper shell and the lower shell are combined to form a main body shell structure, the secondary explosion-proof assembly and the arc extinguishing assembly are located in the main body shell structure, the secondary explosion-proof assembly is arranged in a central axis area of the main body shell structure, and the arc extinguishing assembly is located above the secondary explosion-proof assembly. Through the use of the secondary explosion-proof assembly, when deflagration occurs, quartz sand in a sealing rubber bag in the arc extinguishing assembly can be discharged to the outer side of the cable joint, so that the cable joint is not in contact with air, and the generation of explosion is hindered. The energy release hole upper cover sealing device plays a role in sealing the space and prevents liquid or sundries from entering the middle connector. The whole device achieves the effect of resisting extreme events.

The invention discloses an anti-winding cable interface of a low-voltage cable branch box, relates to the technical field of cable interfaces, and solves the problems of poor electrical continuity and mechanical stability and short service life during connection of the cable interface. The invention discloses an anti-winding cable interface of a low-voltage cable branch box. The anti-winding cable interface comprises a three-way cable interface shell, the external conductive assembly is arranged at the top in the three-way cable interface shell; the electric conductor is arranged in the three-way cable interface shell and is electrically connected with the external conductive component; and the assembled conductive structure is electrically connected with the conductor and is arranged at the bottom in the three-way cable interface shell. According to the invention, the cable can be combined and assembled according to the requirements of a multi-strand shunting cable in an actual circuit, and it is ensured that the laid cable meets different requirements. Meanwhile, during current transmission, the ionization phenomenon under high voltage and energy loss in the discharging process can be reduced, the current transmission efficiency is effectively improved, the electrical continuity and mechanical stability are improved to the maximum extent, and the service life is prolonged to the maximum extent.

The invention discloses a waterproof explosion-proof high-voltage cable intermediate joint which comprises a conductor connecting pipe, an inner shielding pipe, an insulating prefabricated joint, a reinforcing layer and an outer protective shell which are arranged from inside to outside, the two sides of the conductor connecting pipe are connected with conductors of two sections of cables, the inner shielding pipe is arranged outside the conductor connecting pipe, the insulating prefabricated joint is arranged outside the inner shielding pipe in a sleeving mode, and the reinforcing layer is arranged outside the outer protective shell. Waterproof stress gaskets are arranged between the two ends of the inner shielding pipe and the insulating prefabricated joints; an insulating prefabricated part outer wrapping tape is arranged between the insulating prefabricated connector and the reinforcing layer, the reinforcing layer is sleeved with the outer protective shell, and an anti-corrosion layer is arranged outside the outer protective shell; wherein the reinforcing layer adopts a composite copper shell, copper shells are arranged on the two sides, and a light compressible material is arranged in the center. The waterproof stress gasket and the composite copper shell of the reinforcing layer are matched with each other, so that high-temperature electric arcs can be effectively eliminated, and the possibility of explosion accidents at the position of the middle connector is reduced.