510results about "Cable installations on ground" patented technology

The utility model relates to a telescopic seabed emergency repair adapter of a bending limiter, which comprises a first joint, a second joint, a first telescopic cylinder and a second telescopic cylinder, a telescopic structure is arranged between the first telescopic cylinder and the second telescopic cylinder, and the first telescopic cylinder and the second telescopic cylinder are telescopically lapped together. The telescopic structure enables the length of the first telescopic cylinder and the second telescopic cylinder which are lapped together to change; the first connector and the second connector are the same in structure, the first connector is assembled at one end of the first telescopic cylinder, and the second connector is assembled at one end of the second telescopic cylinder. The telescopic seabed first-aid repair adapter of the bending limiter is simple in structure, easy to operate, high in stability and high in adaptability due to the fact that the telescopic length is variable, and when first-aid repair personnel conduct seabed first-aid repair, operation is easy and convenient, consumed time is short, and safety and reliability are achieved.

The invention relates to the technical field of attitude control, in particular to a pipe jacking machine attitude control method and system for municipal engineering construction, and the method comprises the steps: obtaining various monitoring data of a pipe jacking machine; the monitoring time is divided into a plurality of monitoring time periods, and each monitoring time period is divided into a plurality of time periods according to the stage difference of the posture change of the pipe jacking machine in each monitoring time period; acquiring a change response characteristic value of the single monitoring data in the single time period according to discrete characteristics of the single monitoring data in the single time period and related characteristics and difference characteristics of the single monitoring data and other various monitoring data; and according to the total data quantity and the change response characteristic value of the single monitoring data in each time period of the single monitoring time period, acquiring a moving time window parameter of the single monitoring data in the single monitoring time period, and further controlling the monitoring data in the attitude control process of the pipe jacking machine. And the moving time window lengths of different time periods are adaptively optimized, so that the accuracy of pipe jacking attitude control is improved.

The utility model provides a submarine cable armored structure anchoring device which comprises a protective sleeve, an armored structure is arranged in the protective sleeve, one end of the protective sleeve is sealed through a grouting cover plate, the other end of the protective sleeve is connected with an anti-bending pipe through a connecting flange, and through holes for a submarine cable to penetrate through are formed in the anti-bending pipe and the protective sleeve. The protective sleeve comprises two protective covers which are symmetrically arranged, one sides of the two protective covers are connected through a hinge, the other sides of the two protective covers are fixed through bolts, and the split type protective sleeve is adopted, so that installation, disassembly and maintenance are convenient; an anti-bending pipe is arranged, so that the submarine cable is prevented from being excessively bent under a relatively large bending moment, and the service life of the submarine cable is prolonged; the protective sleeve and the anti-bending pipe are connected through the connecting flange, so that the overall sealing performance is improved; and the epoxy binder is poured into the protective sleeve, so that the sealing performance of the submarine cable armoring anchoring device is enhanced, seawater is effectively prevented from entering the conical protective cover to corrode the first armoring steel wire layer and the second armoring steel wire layer, and the durability of the submarine cable is improved.

The invention relates to the technical field of submarine cable protection, in particular to a dynamic submarine cable limiting device and a dynamic submarine cable system.The dynamic submarine cable limiting device comprises a base arranged on a seabed; the two first clamps are fixedly connected with the dynamic submarine cable; the transition module is arranged on the dynamic submarine cable between the two first clamps in a sleeving manner; one ends of the two first mooring ropes are connected with the base, and the other ends of the two first mooring ropes are connected with the two first clamps respectively; wherein the transition module is used for limiting the bending radius of the dynamic submarine cable at the transition module to be not smaller than the preset minimum bending radius, the dynamic submarine cable limiting device can effectively control the bending radius of the submarine cable, and the situation that the submarine cable is damaged due to excessive bending is reduced or even avoided.

A segmented bend restrictor system and method for installing such a segmented bend restrictor system that is configured to be disassembled at discrete locations to minimize unnecessary disassembly. The disclosed segmented bend restrictor system offers a more efficient disassembly operation, while also providing an easy and efficient installation operation.

This invention discloses a submarine cable anti-scouring device and its construction method, applicable to the field of submarine cable protection technology. The invention includes a filter layer and a flexible protective layer. The filter layer comprises multiple filter pads arranged sequentially along the axial direction of the submarine cable on the surface of the cable and / or the seabed, with adjacent filter pads overlapping. The flexible protective layer comprises multiple flexible protective pads arranged sequentially along the axial direction of the cable on the filter layer. At least one flexible protective pad is provided at the overlap of any two adjacent filter pads to press the filter layer firmly against the surface of the cable and / or the seabed. This application, through the cooperation of the filter layer and the flexible protective layer, improves the stability of the submarine cable anti-scouring device to reduce inter-segment displacement and possesses adaptive capability to seabed subsidence deformation, effectively enhancing the anti-scouring effect of the submarine cable.

The invention relates to an underground natural gas supply and power transmission system comprising: - a pipeline (P) for natural gas supply, provided at various intervals with surge arrester devices and stray current drainage devices, - a first pair of HVDC cables (1.1, 1.2) for power transmission, arranged on a same side of the pipeline (P), wherein: - the pipeline (P) and the cables (1.1, 1.2) of the first pair of HVDC cables are parallel to each other and buried underground, the pipeline (P) at a depth (d) in the range of 1.0 m - 1.2 m and the cables (1.1, 1.2) at a depth (d1) in the range of 1.0 m – 1.8 m, - the cables (1.1, 1.2) of the first pair of HVDC cables are arranged, one in respect to the other, at a spacing (c1) in the range of 2 m - 4 m, - the cable (1.1) the nearest to the pipeline (P) is arranged in respect to the pipeline (P) at a distance (g1) in the range of 6 m – 16 m.

The application discloses a cable support for electrical construction and relates to the technical field of cable supports.The cable support comprises a support stand column, a horizontal supporting arm installed on the support stand column, a vertical supporting arm installed on the horizontal supporting arm and an electric telescopic rod arranged on the support stand column.The application places the placing arc plate above the upper area of the ground on both sides of the cable trench, and at this time, the cable can be installed on the flexible rolling wheels on the inner arc surface of the placing arc plate.The flexible rolling wheels can prevent the cable surface from being damaged by abrasion, can enable the cable to be laid at the ground level, can make the installation of the cable safer, can greatly improve the efficiency, can enable multiple cables to be arranged neatly above the ground at one time, can be lowered synchronously, can be arranged more regularly, can limit the radial shaking and twisting of the cables, can prevent the cables from being arched upward during the in-place lowering process and from swinging left and right and being twisted during the lowering process, and can make the cable center line coincide with the support installation reference.

The utility model discloses a splicing structure of a precast concrete cable trench, which comprises a concave plate, the concave plate wraps a splicing seam of two sections of precast concrete cable trenches, two inner walls and the inner bottom of the concave plate are provided with aluminum sheets, the aluminum sheets cover the splicing seam of the two sections of precast concrete cable trenches, and the concave plate is provided with a concave groove. And the aluminum sheets on the two sides in the concave plate are pressed on the aluminum sheet at the bottom. According to the splicing structure of the prefabricated concrete cable trench, the splicing position of two sections of prefabricated concrete cable trenches can be clamped, so that the two sections of prefabricated concrete cable trenches are horizontal and stable, and a splicing seam is shrunk and sealed.

A submarine connection box for connecting a system of submarine power cables, each including at least one submarine power cable core, the submarine connection box including: a casing, the casing having N first openings configured to receive a respective submarine power cable of a first set of N submarine power cables, N being an integer equal to or greater than 1, the casing having K second openings configured to receive a respective submarine power cable of a second set of K submarine power cables, K being an integer greater than 1, a termination box arranged inside the casing, the termination box having a housing including a first group of openings, and a second group of openings, each of the first group of openings being configured to receive a respective submarine power cable core of the first set of N submarine power cables, and each of the second group of openings being configured to receive a respective submarine power cable core of the second set of K submarine power cables, and L sets of connectors arranged in the termination box, L being an integer equal to the number of electrical phases or poles of the system of submarine power cables, wherein for each of the L sets, the connectors are electrically interconnected with each other and configured to connect submarine power cable cores of corresponding electrical phases or poles of the first set of N submarine power cables and the second set of K submarine power cables.

This invention discloses a method and system for controlling submarine cable laying trajectory based on plow body state perception. The method includes: acquiring real-time state images of the plow body in the seabed operating environment to generate a plow body attitude distribution image; extracting feature point sets of the dynamic region of the plow body based on a preset plow body feature localization method; obtaining distribution information from the feature point set to the stable attitude region and correcting the feature point set; and comparing the plow body trajectory region by partitioning the corrected feature point set to obtain trajectory optimization information. The system includes plow body image processing, feature localization, feature correction, and partition comparison modules to generate stable or dynamic adjustment commands, achieving precise control of the plow body trajectory. This invention effectively optimizes the submarine cable laying trajectory by real-time perception of the plow body state, improving operational accuracy and stability.

A system (2) for detecting insulation defects in an underground power cable (12) having one or more single conductors (16, 18, 20) surrounded by a conductive shield (22). The system (2) includes one or more external clamp-on sensors (4, 4', 4'', 4''') fastened to the outside of the power cable (12) or positioned in close proximity to the power cable (12). The clamp-on sensors (4, 4', 4'', 4''') are configured to provide two or more current measurements from outside the power cable (12) without being electrically connected to any of the one or more conductors (16, 18, 20) of the power cable (12). The system (2) includes a signal processing unit (50). The sensors (4, 4', 4'', 4''') are configured to detect partial discharge events (6, 6', 6'', 6''', 6''''). The signal processing unit (50) is adapted to use a mathematical statistical model (52) to process the measurements obtained by the sensors (4, 4', 4'', 4''') to identify whether the current measurements are caused by a partial discharge event (6, 6', 6'', 6''', 6'''') caused in a leakage structure (46) of the power cable (12).

The utility model relates to a cable trench structure, and belongs to the technical field of cable installation. According to the utility model, the gravel layer, the fine sand layer and the prefabricated concrete protection plate are arranged around the cable, so that better protection can be provided for the cable, the damage of external force to the cable is effectively reduced, and the service life of the cable is prolonged; the arrangement of the rubble layer and the fine sand layer helps to improve the drainage performance of the cable trench, prevents water accumulation, reduces the risk that the cable is affected with damp, and guarantees the normal operation of the cable. The rubble layer at the bottom of the trench is matched with the plain soil layer, the lime soil layer and the gravel layer at the upper part of the trench, so that the stability of the cable trench structure is improved, larger external force and load can be borne, the influence of ground subsidence on the cable is effectively reduced, and the reliability is relatively high.

An elongate connector for subsea connection of cables and the like to wind turbine generators has a plurality of locking elements arranged on ramp surfaces and held in a plurality of cages on the connector. The cages are moveable to move the locking elements along the ramp surfaces between an engaged position and a disengaged position and the plurality of cages are moveable independently of each other. A release collar is provided, which can move all the cages simultaneously to the disengaged position, in order to allow removal of the connector.

The utility model discloses a spiral winding protection pipe which comprises a plurality of spiral pipe bodies, connecting positioning holes are formed in the two ends of each spiral pipe body, and every two adjacent spiral pipe bodies are connected through a connecting positioning rod. The spiral pipe body is hollow, and a spiral gap is formed in the pipe wall; the spiral gaps between every two adjacent spiral pipe bodies correspond to each other end to end. The spiral winding protection pipe has the technical effects and advantages that the spiral winding protection pipe is quick to mount, and a plurality of spiral winding protection pipes can be quickly and conveniently connected.

The utility model relates to the technical field of cable supports, and provides a combined cable support structure which comprises a mounting rack and a fixing seat, the fixing seat is arranged outside the mounting rack, a connecting assembly is arranged inside the mounting rack and the fixing seat, a cable fixing assembly is arranged outside the fixing seat, and connecting grooves are formed in the surfaces of the two sides of the mounting rack respectively. The two ends of the side surface of the fixing base are each provided with a pair of sleeve plates, and the mounting frame is sleeved with the fixing base through the sleeve plates. According to the technical scheme, the problems that according to the cable support in the prior art, the connecting plate is fixed to the connecting support by inserting the connecting plate into the connecting support and fixing the connecting plate through bolts, and before the bolts are installed, a worker needs to rotate the bolts with one hand and hold and fix the connecting plate with the other hand, so that displacement of the connecting plate can be avoided; the alignment of the side connecting holes and the side slotted holes is influenced, so that the bolts are difficult to install, and the cable laying efficiency is influenced.

The invention relates to the field of cable trench facilities, in particular to a cable trench with a built-in dehumidification function and a construction process and a dehumidification method of the cable trench. According to the invention, the S-shaped heating pipeline and the ventilating pipeline are pre-buried and are connected with the blowing device and the control system, and bottom heating evaporation and side wall air supply are combined to realize three-dimensional dehumidification, so that the internal humidity of the cable trench is remarkably reduced, and a dry and safe operation environment is provided for the cable. All functional pipelines and grounding grids are synchronously pre-buried in the civil engineering stage, strict plugging and fixing measures are adopted, the dehumidification function and the main body structure are integrally built, space is saved, and pre-burying precision and later implementation are guaranteed. Real-time humidity monitoring is carried out through the humidity sensor, dehumidification modes of different intensities are automatically started and stopped according to humidity values, intelligent and self-adaptive all-weather operation is achieved, the dehumidification efficiency is high, energy utilization is accurate, and the operation and maintenance cost and the manual operation intensity are greatly reduced.

The invention provides a cable trench cover plate structure applicable to a stone veneer, which is characterized in that the cable trench cover plate structure comprises a stone structure, a bearing structure and a protective frame, the stone structure is configured at the top of the cable trench cover plate structure; the bearing structure is a steel structure, is configured below the stone structure and is a stress part of the cable trench cover plate, and the bearing structure comprises a bearing plate and a bearing pipe; the two ends of the bearing plate are bent to form a rectangle with an opening; the bearing pipe is arranged below the bearing plate; the edge protecting frame is arranged around the stone structure in a closing-up mode. Compared with the prior art, the stone facing and steel structure form is adopted, so that the appearance effect of the cable trench cover plate is improved, and the bearing problem of the cable trench cover plate with the stone facing in the prior art is solved. In addition, the stone is protected by arranging the metal protective frame on the periphery of the stone, the service life of the cover plate is prolonged, and meanwhile the ground is protected.

The present invention relates to the technical field of submarine cable installation, and specifically relates to a supporting and protecting device for a submarine cable, comprising a protective shell, wherein a cable passes through the interior of the protective shell; a supporting member is provided inside the protective shell, the supporting member being configured to support and limit the cable passing through; and the left and right sides of the protective shell are each provided with a multifunctional panel assembly, which comprises an outer panel and an inner panel, both the outer panel and the inner panel being rotatably folded inside the protective shell; during the process of laying the cable on the seabed, the outer panels are rotated and unfolded to increase the coverage area of the protective shell. In the present invention, when the cable reaches a sandy and muddy area at the seabed, rotating and unfolding the outer panels can control limiting portions to be inserted deep into sand and mud, and the limiting portions on the left and right sides of the protective shell are in an inward-fastening position to grip the sand and mud at the bottom of the protective shell, providing a stable supporting force for the protective shell, and reducing the magnitude of movement of the protective shell caused by an external impact; in addition, the outer panels unfold quickly and are easy to use.

The invention discloses a submarine cable laying track control method and system based on plough body state perception. The method comprises the following steps: acquiring a real-time state image of a plough body in a seabed operation environment, and generating a plough body attitude distribution image; based on a preset plough body feature positioning method, extracting a feature point set of the dynamic area of the plough body; acquiring distribution information from the feature point set to the stable attitude region, and correcting the feature point set; and performing partition comparison on a plough body track region through the corrected feature point set to obtain track optimization information. The system comprises a plough body image processing module, a feature positioning module, a feature correction module and a partition comparison module, a stable or dynamic adjustment instruction is generated, and precise control over the track of the plough body is achieved. By sensing the state of the plough body in real time, the submarine cable laying track is effectively optimized, and the operation precision and stability are improved.

The disclosure relates to a submarine cable in which each of a dynamic submarine cable section and a static submarine cable section is included in one submarine cable so that land and ocean equipment can be connected through a single submarine cable.

In the construction of offshore wind farms, this provides a marine power conduit interface assembly that reduces cable wear when the cable is passed through a socket that penetrates the base. [Solution] The marine power conduit interface assembly has a slide 20 that is slidable within a housing 10. The assembly is locked into the socket of the energy generator by sliding the slide within the housing. The slide has legs 21 that extend axially in grooves formed on the inner surface of the bore 10b of the housing and is connected to a ring 41 that has a flange 44 extending radially outward from the outer surface of the housing. The ring is connected to the legs by fingers 45 that extend radially inward through slots in the housing. By sliding the slide within the housing, the ram block 31 of the locking device can be locked or unlocked in a predetermined position relative to the locking arm 32.

A stabilization device (22) for a subsea cable unit (18) is disclosed, where the stabilization device (22) extends between a seabed (17) and a cable inlet (13) on a subsea structure (11), where the cable inlet (13) is located above the seabed (17). The subsea cable unit (18) comprises a subsea cable with a cable protection system (20) or only a subsea cable, and the stabilization device (22) comprises at least one stabilization base (24, 25) and at least one pile element (54) for anchoring the at least one stabilization base (24, 25) to the seabed (17) or the scour protection layer (15). The at least one pile element (54) is adapted to be driven into the seabed (17) or into the scour protection layer (15) such that the at least one stabilizing base (24, 25) is securely anchored to the seabed (17). The stabilizing device (22) further comprises a first clamping device (27) securely attached at one end to the at least one stabilizing base (24, 25), where the first clamping device (27) is curved and adapted to at least partially surround the subsea cable unit (18), and when the at least one stabilizing device (24, 25) and the subsea cable unit (18) are installed, the first clamping device (27) is configured to clamp the at least one stabilizing base (24, 25). A first clamping device (27) for holding the subsea cable unit (18); and a second clamping device (28) securely attached at one end to the at least one stabilizing base (24, 25), where the second clamping device (28) is curved and adapted to at least partially surround the subsea cable unit (18), and when the stabilizing device (22) and the subsea cable unit (18) are mounted, the second clamping device (28) holds the subsea cable unit (18).

The invention relates to a conduit (100) for a superconducting electrical link, forming a unit intended to be connected at its ends for the formation of the superconducting electrical link, comprising: a cryostat (110) forming a double-walled conduit (or PiP for "pipe-in-pipe" in English) comprising a coaxial inner tube (111) and outer tube (112) and a thermal insulator (113) occupying the annular area between the outer tube (112) and the inner tube (111); and a superconducting cable core (105) housed inside the inner tube (111), the superconducting cable core (105) having at room temperature an excess length compared to the length of the cryostat (110) such that in its superconducting state the length of the cable core (105) is greater than or equal to the length of the cryostat (110).

The invention relates to an umbilical cable terminal, in particular to an underwater installation method for an oversized umbilical cable terminal, which comprises the following steps: S1, carrying out operation preparation for laying the tail end on a deck; s2, a crane hoists the umbilical cable terminal UTA out of a cabin; s3, enabling the umbilical cable terminal UTA to pass through a cone pulley; s4, hanging the umbilical cable terminal UTA in the moon pool; s5, the tail end of the umbilical cable terminal UTA is lowered in place; according to the method, the umbilical cable terminal UTA is transferred out of a cabin by connecting the crane with the bending limiting device out-of-cabin rigging, and then cone pulley passing operation is carried out under the cooperation of the crane and the pull-back winch; and the load is transferred to the winch from the crane, the winch is connected with the hump rigging on the bending limiting device through the sling reserved on the UTA fixing piece, and finally UTA in-place is completed under the cooperation of the crane, the winch and a ship navigation bridge. The whole construction team is coordinated and matched, most work is completed mechanically through the steps, the operation risk is reduced, and operation can be completed efficiently.

The invention relates to the technical field of submarine cable detection and maintenance, in particular to a self-maintenance stable base for submarine cable laying, which comprises a mounting base for improving submarine cable mounting stability, and an external self-cruise detection module is mounted on the outer side of the mounting base. The self-maintenance stable base for submarine cable laying is composed of the installation base installed on the seabed and the external self-cruise detection module located on the outer side of the installation base, a split type structure is adopted, and earlier-stage installation and later-stage maintenance, replacement and separation are facilitated; the crawler-type advancing units capable of ascending and descending on the two sides of the external self-cruising detection module are used for driving, the device can be suitable for the states of different positions of the seabed, adaptability and transmission efficiency are greatly improved, and stable operation of the device can be guaranteed; the four electric control type detection covers are installed on the inner side face of the external detection cover shell, a detection frame can be formed around the submarine cable through overturning, and therefore the submarine cable detection effect is improved, and the submarine cable detection range is widened.

The invention discloses a novel hydraulic intelligent trench cover plate which comprises an intelligent sensing assembly used for collecting environmental parameters in a trench. The control decision component is used for receiving the collected data of the intelligent sensing component, analyzing and processing the collected data and generating a control instruction; the execution response component is used for receiving the control instruction and executing a corresponding action; the intelligent sensing assembly and the execution response assembly are electrically connected with the control decision assembly, a combined structure of a direct-push motor and a telescopic mounting frame is adopted, and a novel environment-friendly composite material cover plate which is light in weight and high in pressure resistance is matched, so that remote or local one-key automatic opening and closing of a cover plate main body are achieved, and the automatic opening and closing of the cover plate main body are achieved. And traditional heavy-physical manual operation is completely replaced, and the operation and maintenance labor cost and the labor intensity are greatly reduced.