The present invention relates to the technical field of submarine cables, and in particular to a submarine cable armoring steel wire anchoring device, comprising an anchoring disc base. A plurality of conical anchoring holes are formed in the outer ring of the anchoring disc base in an annular configuration; a conical clamp is slidably mounted in each conical anchoring hole; a cable armoring steel wire penetrates through the inner ring of the conical clamp; a lug plate is provided in the middle of the side of the anchoring disc base close to the large ends of the conical anchoring holes; a through hole is formed in the middle of the lug plate; a stud bolt is slidably mounted in the through hole of the lug plate; a U-shaped shackle is sleeved on the outer ring of the stud bolt; and locking nuts are threadedly mounted at both ends of the stud bolt. The gravity of a submarine cable is dispersed to multiple steel wires, and each steel wire is anchored, thereby improving the strength of anchoring of the submarine cable, reducing the probability that the submarine cable end anchoring position falls off, and greatly increasing the laying distance of the submarine cable.
H02G 1/10 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour poser les câbles, p. ex. appareils de pose sur véhicule dans ou sur l'eau
The present invention relates to an umbilical cable bending stiffness testing device and method. The device comprises a workbench; a measuring groove is formed in the top of the workbench; a fixing assembly is arranged in the measuring groove, and the fixing assembly is used for fixing two ends of an umbilical cable; a mounting plate is fixedly connected to the bottom of the workbench; a mounting frame is fixedly connected to the upper surface of the mounting plate; a threaded rod is rotatably connected between the lower surface of the mounting frame and the upper surface of the mounting plate; obtained data is transmitted to a dynamic data acquisition system by means of a displacement monitor body; the dynamic data acquisition system calculates obtained parameters to obtain bending stiffness curves of the umbilical cable under different curvatures. Moreover, because the device is in rigid connection with the umbilical cable by means of two sets of hoops, the problem of stress concentration caused by flexible connection of a steel strand rope is avoided, and the rigid connection ensures that tensile loads can be applied to two points of the umbilical cable in a balanced manner during an experiment, thereby improving the accuracy of bending stiffness testing results.
G01N 3/20 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique en appliquant des efforts permanents de flexion
3.
CORRUGATED COPPER SUBMARINE CABLE AND SUBMARINE CABLE PRODUCTION DEVICE
A corrugated copper submarine cable and a submarine cable production device. The submarine cable production device comprises a worktable, and further comprises: a fixing compartment arranged in the middle of the upper surface of the worktable, wherein a fixing pipe penetrates the interior of the fixing compartment, a winding assembly is arranged on the circumferential surface of one end of the fixing pipe, and the winding assembly comprises a rotating ring rotatably arranged on the circumferential surface of the fixing pipe; and a welding compartment arranged on one side of the fixing compartment, wherein two support frames are arranged in the welding compartment, the top ends of the two support frames are both fixedly connected to limiting rings, a positioning ring is rotatably arranged between the two limiting rings, the inner wall of the positioning ring is fixedly connected to a plurality of arc welding heads, and the plurality of arc welding heads are distributed in a circumferential array along the inner wall of the positioning ring. By providing a welding assembly, the present invention solves the problem of reduced production efficiency of corrugated copper submarine cables caused by a relatively slow welding speed and low efficiency during normal welding in which welding is performed by a large number of technicians to generate corrugated textures.
H01B 7/282 - Protection contre les dommages provoqués par des facteurs extérieurs, p. ex. gaines ou armatures par l'humidité, la corrosion, les attaques chimiques ou les conditions atmosphériques empêchant la pénétration de fluides dans les conducteurs ou les câbles
H01B 7/18 - Protection contre les dommages provoqués par des facteurs extérieurs, p. ex. gaines ou armatures par l'usure, la contrainte mécanique ou la pression
H01B 7/22 - Fils rubans ou métalliques, p. ex. d'acier
H01B 13/26 - GainageBlindageÉcransApplication de couches de protection d'un autre genre par enroulement, guipage ou chevauchement longitudinal
4.
COMPOSITE SUBMARINE CABLE, CABLE PRODUCTION METHOD AND CABLE PRODUCTION DEVICE
A composite submarine cable, a cable production method and a cable production device, and relating to the field of submarine cables. The submarine cable comprises a conductor (15); the interior of the conductor (15) is hollow; a semiconductive water blocking binding tape (16) is provided outside the conductor (15); a conductor shielding layer (17), an insulating layer (18) and an insulation shielding layer (19) are sequentially sleeved outside the semiconductive water blocking binding tape (16); the exterior of the insulation shielding layer (19) is wrapped with a semiconductive water blocking tape (20); a lead alloy sheath (21) is sleeved outside the semiconductive water blocking tape (20); a cable sheath (22) is sleeved outside the lead alloy sheath (21); the conductor (15) comprises a plurality of conductor units; the plurality of conductor units are twisted into the conductor (15); each conductor unit comprises an optical unit (151); a carbon fiber tube (152) is sleeved outside the optical unit (151); and a stainless steel tube (153) is sleeved outside the carbon fiber tube (152). The carbon fiber tube is used for replacing an armored metal layer, so that the weight of the submarine cable is reduced, facilitating the transportation and laying of the submarine cable.
H01B 13/00 - Appareils ou procédés spécialement adaptés à la fabrication de conducteurs ou câbles
F26B 11/14 - Machines ou appareils à mouvement non progressif pour le séchage d'un matériau solide ou d'objets dans des tambours ou autres récipients quasi fermés, fixes, avec dispositifs agitateurs mobiles le dispositif agitateur se déplaçant dans un plan horizontal ou légèrement incliné
5.
PREPARATION METHOD FOR EPDM INSULATING RUBBER, AND USE OF EPDM INSULATING RUBBER
Disclosed are a preparation method for an EPDM insulating rubber, and use of the EPDM insulating rubber. The EPDM insulating rubber comprises the following components in parts by mass: 100 parts of EPDM, 10-15 parts of EPDM-MAH, 4-6 parts of zinc oxide, 0.5-1.5 parts of stearic acid, 2-5 parts of an antioxidant, 50-60 parts of clay, 3-5 parts of paraffin oil, 20-25 parts of white carbon black, 10-15 parts of silicon carbide, 1-3 parts of sulfur, 3-4 parts of a crosslink assisting agent, 4-5 parts of a vulcanizing agent, and 2-3 parts of silane coupling agent. The preparation method comprises multiple mixing, plastication, high-temperature heat treatment, mill run, vulcanization, and other such processes. The EPDM-MAH and the silane coupling agent are firstly mixed and left to stand for a period of time, so that the silane coupling agent completes the migration process and can fully interact with the surface of a filler to improve the dispersity of the filler, thereby inhibiting the accumulation and irregular distribution of space charges generated due to internal agglomeration of the material; and in combination with the synergistic effect of the EPDM-MAH and the silicon carbide, the space charges of the EPDM insulating rubber are further inhibited, so that the EPDM insulating rubber with excellent mechanical property and electrical properties is obtained, meeting the performance requirements of high-voltage stranded cable accessories.
C08L 23/16 - Copolymères de l’éthylène et du propylène ou de l’éthylène, du propylène et de diène
C08L 23/26 - Compositions contenant des homopolymères ou des copolymères d'hydrocarbures aliphatiques non saturés ne possédant qu'une seule liaison double carbone-carboneCompositions contenant des dérivés de tels polymères modifiées par post-traitement chimique
C08K 13/04 - Ingrédients caractérisés par leur forme et ingrédients organiques ou inorganiques
C08K 5/548 - Composés contenant du silicium contenant du soufre
H01B 3/28 - Isolateurs ou corps isolants caractérisés par le matériau isolantEmploi de matériaux spécifiés pour leurs propriétés isolantes ou diélectriques composés principalement de substances organiques caoutchoucs naturels ou synthétiques
A submarine cable armor loss factor test calculation method, comprising the following steps: step S1, pre-treating a submarine cable; step S2, providing a test loop for the submarine cable; step S3, adjusting the current in the test loop to acquire power values of the test loop and direct-current resistance values of the cable at different temperatures; and step S4, according to the current values of the test loop, the power values of the test loop and the direct-current resistance values of the cable, calculating armor loss factors of the submarine cable at different temperatures. The armor loss factors of the submarine cable at different temperatures can be accurately obtained by means of testing, and the current carrying capacity of the submarine cable can be accurately calculated by means of coefficients, thus achieving the effect of reducing the designed section of a submarine cable, and reducing costs and raising efficiency.
G01R 27/26 - Mesure de l'inductance ou de la capacitanceMesure du facteur de qualité, p. ex. en utilisant la méthode par résonanceMesure de facteur de pertesMesure des constantes diélectriques
7.
BUFFER LAYER WRAPPING AND METAL SHEATH EXTRUSION PRODUCTION LINE FOR HIGH-VOLTAGE CABLE
Disclosed is a buffer layer wrapping and metal sheath extrusion production line for a high-voltage cable, comprising: an insulated core pretreatment chamber, a metal rod treatment device, a wrapping and traction operation chamber, and an extrusion machine. The insulated core pretreatment chamber and the wrapping and traction operation chamber are both provided with temperature and humidity monitoring and regulation devices. The metal rod treatment device is arranged above or beside the insulated core pretreatment chamber and the wrapping and traction operation chamber. One side of the wrapping and traction operation chamber facing the metal rod treatment device is provided with a feeding inlet, and one side facing the extrusion machine is provided with a discharge outlet. The present disclosure can significantly reduce the impact of moisture on the production process of the high-voltage cable buffer layer and improve the operation stability of the cable.
Disclosed are a buffer layer wrapping and metal sheath welding linkage production line for a high-voltage cable, comprising an insulated conductor pretreatment chamber, a wrapping and metal strip treatment chamber, a welding chamber, and a stretching and winding device which are sequentially arranged along the production line. The insulated conductor pretreatment chamber, the wrapping and metal strip treatment chamber, and the welding chamber are each provided with an environment temperature and humidity measurement and control device. According to the present invention, operations before insulated conductor wrapping, operations of insulated conductor wrapping, and operations of metal sheath welding are configured to be performed in closed spaces in which environment temperature and humidity measurement and control devices are arranged, so as to thoroughly prevent moisture absorption of a water-blocking expansion belt, prevent high-voltage cable ablation, prolong the service life of the high-voltage cable, and improve running stability.
A cable end connecting device for tension and bending tests of submarine cables, comprising a steel wire tension plate (1), a conductor bearing tension plate (2), and connecting screws (4). A plurality of tension mechanisms are mounted between the steel wire tension plate (1) and the conductor bearing tension plate (2); each tension mechanism consists of a metal lug (7), a tension meter (5), and a tension meter screw (6); a conductor hole (13), a plurality of first screw holes (14), and a plurality of armor holes (15) are formed in the steel wire tension plate (1); and two fixing holes (16), a plurality of second screw holes (17), and a plurality of tension meter screw holes (18) are formed in the conductor bearing tension plate (2). The cable end connecting device solves the shortcomings of the existing traditional connecting devices for tension and bending tests, and can separately fix an armored steel wire (8) and submarine cable conductors (10), and enables determination of the overall tension distribution of a submarine cable by adjusting the tension of the three-core (single-core) conductors separately, thereby meeting test requirements for tension and bending tests of three-core or single-core, large-cross-section, and ultra-high-voltage submarine cables.
G01N 3/08 - Recherche des propriétés mécaniques des matériaux solides par application d'une contrainte mécanique par application d'efforts permanents de traction ou de compression
H02G 1/08 - Méthodes ou appareils spécialement adaptés à l'installation, entretien, réparation, ou démontage des câbles ou lignes électriques pour poser les câbles, p. ex. appareils de pose sur véhicule à travers des tubes ou conduits, p. ex. tringles ou fil de tirage pour pousser ou tirer
G01L 5/04 - Appareils ou procédés pour la mesure des forces, du travail, de la puissance mécanique ou du couple, spécialement adaptés à des fins spécifiques pour la mesure de la tension dans les éléments flexibles, p. ex. dans les cordages, les câbles, les fils métalliques, les filaments, les courroies ou les bandes
10.
PROFILE SINGLE-STRAND DIE FOR DIRECT-CURRENT SUBMARINE CABLE AND DESIGN METHOD FOR PROFILE SINGLE-STRAND DIE
Disclosed in the present invention is a profile single-strand die for a direct-current submarine cable, comprising a sizing die and several process dies. Sleeves of the several process dies are sequentially sleeved on the outside of the sizing die from small to large; a cross-sectional change rate of the sizing die and the adjacent process die and a cross-sectional change rate of the two adjacent process dies are controlled to be 0-55%; the sizing die is arc-shaped. In this manner, the present invention relates to a profile single-strand die for a direct-current submarine cable and a design method for the profile single-strand die; according to the design method, the number of the process dies, the planar structural size of each die, and a relative position relationship between a profile single strand and the center of a copper rod are determined, and it is ensured that the copper rod is uniformly extruded and deformed in each direction in a wire drawing process.
A three-core submarine cable filling strip, which comprises: an outer circular arc edge (1); two ends of the outer circular arc edge are symmetrically connected to inner circular arc edges (2); the two inner circular arc edges are connected to the two ends of the outer circular arc edge which are not connected to each other; an optical cable clamping ring (3) is disposed at the position at which the two inner circular arc edges connect; the optical cable clamping ring is internally provided with an optical cable clamping hole (4); the inner wall of the outer circular arc edge, the inner walls of the two inner circular arc edges and the outer wall of the optical cable clamping ring form a hollow hole (9), and the inner wall of the outer circular arc edge, the inner walls of the two inner circular arc edges and the optical cable clamping ring form a filling strip body (5). For the three-core submarine cable filling strip formed by means of the manner above and the design method therefor, the filling strip fabricated by the design method is simple in structure and uses a hollow structure, which not only reduces costs, but also reduces the weight of the submarine cable, and facilitates submarine cable transportation and laying. The provided optical cable hole has good universality and is convenient for optical cable loading and unloading.
H01B 7/18 - Protection contre les dommages provoqués par des facteurs extérieurs, p. ex. gaines ou armatures par l'usure, la contrainte mécanique ou la pression
A Z-shaped sealed cable conductor of a high-voltage direct-current submarine cable and a design method thereof. The cable conductor comprises a center wire and a plurality of single wires, the plurality of single wires are stranded on an outer wall of the center wire in a layer-by-layer overlapping manner, the single wires are Z-shaped single wires, every two adjacent Z-shaped single wires are mutually stacked and matched end to end, the plurality of Z-shaped single wires are spirally and tightly wound together by means of a stranding process, and chamfers are provided at corners of the Z-shaped single wires. The Z-shaped sealed cable conductor of the high-voltage direct-current submarine cable uses a Z-shaped single-wire circular pressing structure, the problem of high pressing difficulty of a frame stranding machine is effectively solved, a conductor pressing coefficient is higher than that of a circular single-wire circular pressing structure, and the requirement for the water blocking performance of the conductor during high-sea laying of the high-voltage direct-current submarine cable can be satisfied.
Disclosed in the present utility model is an alternating-current and direct-current hybrid submarine cable for offshore wind power, comprising an alternating-current submarine cable, two direct-current submarine cables, a filling layer, an inner liner layer, an armor layer and an outer layer; wherein the alternating-current submarine cable and the two direct-current submarine cables are twisted into one cable to form a three-core structure; the filling layer, the inner liner layer, the armor layer and the outer layer are successively wrapped around the alternating-current submarine cable and the direct-current submarine cables. For the alternating-current and direct-current hybrid submarine cable for offshore wind power in the present utility model, an alternating-current submarine cable and two direct-current submarine cables are twisted into one hybrid submarine cable, so that the startup of a fan and direct-current power taking and power transmission are completed by means of one submarine cable. Thus, the number of times of laying submarine cables is reduced from multiple times to one time, effectively reducing laying costs; moreover, the alternating-current and direct-current hybrid submarine cable has a round and monolithic structure, and is convenient to manufacture and to lay, reducing the difficulty in laying.
A degassing pipeline for a cable, comprising: a vertical tower extruder (16) and a degassing chamber (17), the vertical tower extruder and the degassing chamber being connected by means of a cable insulated core (18). The cable insulated core is composed of a copper core stranded conductor (13) and a shielding insulation layer (14), and the shielding insulation layer is wrapped on the outer wall of the copper core stranded conductor. Several supporting rollers (19) and steering supporting rollers (20) are mounted between the vertical tower extruder and the degassing chamber. Several high-frequency heating coils (15) are mounted between two supporting rollers, the high-frequency heating coils are rings provided with openings at the bottom ends, and the cable insulated core passes through the high-frequency heating coils. During the production process of the insulated core, the degassing pipeline heats the cable conductor by means of the high-frequency heating coils, so that the insulated core can be produced and heated at the same time, achieving the effect of online degassing, saving the degassing time, improving the production efficiency of the cable, and achieving a better degassing effect.
Ammmm of the respective layers; 6) calculating the number of monofilaments in each layer of the conductor; and 7) determining the number of monofilaments in each layer of the conductor. The present design method can be used to design conductors having different cross sections, thereby standardizing the design of various conductors, and remedying the lack of a universal method for designing conductors.
GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE (Chine)
HENGTONG SUBMARINE POWER CABLE CO.,LTD (Chine)
STATE GRID JIANGSU ELECTRIC POWER COMPANY (Chine)
STATE GRID JIANGSU ECONOMIC RESEARCH INSTITUTE (Chine)
Inventeur(s)
Mei, Wenjie
Zhang, Chong
Pan, Wenlin
Chen, Xin
Li, Wenpeng
Li, Chunmei
Gao, Zhengping
Shen, Xiaowei
Abrégé
Disclosed is a method for designing a large-section submarine cable conductor based on a special-shaped copper single line. The method comprises the specific steps of: 1) calculating an outer diameter; 2) selecting a structure; 3) calculating an inclination angle of each special-shaped single line; 4) designing each special-shaped single line; 5) correcting a central angle corresponding to an extension line on two sides of the special-shaped single line; 6) calculating a filling coefficient of the special-shaped single line; 7) determining the sizes of the values of η and η'; and 8) obtaining a final design scheme. According to the design method, special-shaped copper single lines are used for designing a submarine cable conductor; the compressing coefficient design value of the conductor is 0.97; in combination with the influence of pitches on the arrangement of the special-shaped single lines; the water blocking effect of the conductor is improved; and the sectional area of each copper single line is kept consistent as much as possible, so that the skin effect and the proximity effect are reduced, and the conductor is suitable for transmitting an alternating current.
brevets