96 results about "Filled cable" patented technology

A fiber optic cable includes at least one at least one bundle having a plurality of non-tight buffered optical fibers and a binder element for maintaining the integrity of the bundle. The binder element may be, for example, a binder thread. The fiber optic cable may exclude a grease or a grease-like composition being in contact with the at least one bundle for filling interstices of the cable thereby blocking water from flowing through the cable. The fiber optic cable also includes a separation layer for inhibiting adhesion between the bundles of optical fibers and the cable jacket. In another embodiment, a fiber optic cable includes a plurality of optical fibers and a binder element forming at least one bundle. The at least one bundle is surrounded by an armor layer and the fiber optic cable excludes a cable jacket within the armor layer.

A preparation method of a deep sea cable filling strip relates to a preparation method of a conductor filling strip. The preparation method comprises the following process steps: mixing rubber, a vulcanizing agent, a vulcanization accelerator, an antiager, a plasticizer, a reinforcing filler and a tackifier in parts by weight; and then calendering, slitting and packaging to obtain the finished product. The method has a simple production technology, stable technical properties and high practicability; the product is used in the cable and the cable core of the optical cable, the product has high strength, uniform thickness and a good saturated water absorption effect and has the functions of shielding and buffering the electric field; and the product also has viscoelasticity, thus the filling cable core is stronger and the service life of the optical cable can be prolonged.

[PROBLEM] To fill a cable connection head with an insulating oil and provide a movable lid member of the oil to ensure a long-term insulating property in the cable connection head and enable long-term continuous use of a measuring device. [MEANS FOR SOLUTION] A cable connection head 18 having a head body 21 comprised of a bottom head body 19 and a top head body 20 connected to a measuring device body 6, having a well logging cable 1 passed through the top head body 30, and having core conductors of sheathed cables 2 connected to a connector 11 fit into the bottom head body 19, wherein the bottom head body 19 is filled with a low viscosity insulating oil 29 with a specific gravity heavier than the borehole fluid, outflow of the low viscosity insulating oil 29 is prevented, and a movable sealing member 30 preventing entry of borehole fluid is provided movably inside the bottom head body 19.

Novel additive systems for lead-free filled cable insulation are disclosed. These systems provide improved electrical and mechanical properties. The base polymer may be metallocene based, non metallocene based or combinations thereof. The additives may contain one or more hindered amine light stabilizers, mercapto compounds, and optionally, amine antioxidants.

The invention features the following: using metallic filament ball to fill the gap between cables or between cable and bulkhead, and filling the conducting daub and sealant at both side of the metallic filament ball; and further, the cable, conducting daub, sealant and metallic filament are loaded together into a cable pipe, and the cable pipe passes through the bulkhead and makes a sealed connection with the bulkhead.

The invention relates to the technical field of chemical industry and particularly relates to a flame-retardant waterproof ointment incompatible with a flame-retardant sheath material and used for filling a cable. The waterproof ointment is characterized by comprising the following raw material components in percentage by weight: 65-75% of base oil, 4-8% of oil stabilizer, 1-2% of antioxidant, 3-8% of thickener, 3-8% of fire retardant, 3-15% of waterproofing agent and 5-10% of absorptive particles. Compared with the prior art, the flame-retardant waterproof ointment has the following advantages: the quality guarantee period of products is greatly prolonged, the initial water absorption speed is greatly quickened, the initial expansion speed is quicker; the dropping point of the products is higher, the cone penetration is greater, and the thixotropic property is better; and a photoelectric cable made from the flame-retardant waterproof ointment is longer in service life.

The invention relates to cable fillers, belonging to fillers in a cable. The cable fillers comprise the components of low density polyethylene plastics, high density polyethylene plastics, polypropylene plastics, graphite, foaming agent and fire retardant. The cable filler strip prepared by the cable filter in the invention has stable molding, fills cable gaps fully, ensures round appearance of the cable when the cable is formed, and has the advantages of high mechanical strength, good surface tightness, watertightness, moisture resistance, difficult fracture, small density, good flame retardant property, economy and practicability and the like.

The invention provides an underwater oil-filled cable and a manufacturing method thereof. The underwater oil-filled cable mainly comprises watertight plugs, a lead, a plastic hose, compensation oil and clamping devices; the lead is wrapped inside the underwater oil-filled cable by the plastic hose to realize the isolation of the inside from water; and the pressure difference of the inside and the outside caused by the water pressure is balanced by the compensation oil in the plastic hose. When the underwater oil-filled cable is manufactured, the lead is cut off according to the required length of the cable and the cut cable is enabled to penetrate into the plastic hose; the corresponding watertight plugs are respectively welded at two ends of the lead; after the welding is finished, one end of the lead is clamped by using the clamping devices such as AB adhesive and a hoop; then the compensation oil is filled into the plastic hose from the other end of the lead; and after the plastic hose is fully filled with the compensation oil, the plastic hose is clamped by the clamping devices, and finally the whole oil-filled cable is manufactured. The underwater oil-filled cable has the advantages of low price, great underwater work depth, simpleness and convenience in manufacture, safety and reliability in use and low possibility of being scratched.

A cable gland for providing strain relief and sealing for a cable that can be coupled to a device. The cable gland includes a sealing gland having a sealant. Upon assembly of the cable gland, the sealing gland is compressed in a manner that can releases, or otherwise can facilitate the displacement of, the sealant about an interface between a portion of the cable and the sealing gland, and/or into spaces between exposed insulative jackets and/or conductors of the cable. The sealant can include a curable viscous sealant that is housed within a package of the sealing gland, the package being configured to rupture upon compression of the sealing gland. Alternatively, the sealant can be a malleable sealant material that can be pressed or otherwise displaced to form a seal between the sealing gland and cable and/or into the spaces between exposed insulative jackets and/or conductors of the cable.

The invention relates to an oil-filled cable terminal oil level measuring and oil supplementing method. The method is mainly characterized by comprising the following steps of (1) mounting a three-way valve on an oil filling port of an oil-filled cable terminal, wherein the three-way valve is closed when the oil-filled cable terminal runs normally; (2) measuring the intensity of pressure (P) generated by insulating oil in the oil-filled cable terminal; (3) measuring the temperature (T) of the insulating oil in the oil-filled cable terminal and calculating out the density (rho) of the insulating oil; (4) calculating the liquid level h of the insulating oil in the oil-filled cable terminal; and (5) filling the oil-filled cable terminal with oil if the liquid level h of the insulating oil in the oil-filled cable terminal does not meet the operating requirement. The method is reasonable in design; the measurement of the liquid level of the insulating oil in the oil-filled cable terminal is realized, and meanwhile, the oil is supplemented when the insufficient oil quantity is found, so operators can know the operating situation accurately and eliminate defects in time.

The invention relates to a cable fault treatment system in a power system, in particular to an automatic emergency oil supply system of an oil-filled cable. The oil supply system comprises an oil-filled cable and a plurality of groups of common pressure tanks connected with the oil-filled cable. One port of the common pressure tanks is connected with an electromagnetic valve and the other port is connected with an oil pressure transmitter; a cable fault diagnosis automation device is connected between the electromagnetic valve and the oil pressure transmitter; the other port of the electromagnetic valve is connected with a standby pressure tank. By adopting the technical solving proposal, the problem of protection oil leakage caused by fault during the immediate compensation of the oil-filled cables is totally solved, thereby reducing fault danger coefficient, improving rescue efficiency in the oil leakage accident of the oil-filled cables, winning valuable time for power recovery and providing safety measures for rescue personnel.

The invention relates to a monolayer-armored and double-layer-armored submarine optical cable transition soft connector and a connection method thereof. The monolayer-armored and double-layer-armored submarine optical cable transition soft connector and the connection method are suitable for connection of submarine optical cable plants in a submarine optical fiber communication system. The monolayer-armored and double-layer-armored submarine optical cable transition soft connector comprises an optical fiber, a monolayer-armored submarine optical cable stainless steel pipe, outer-sleeved stainless steel pipes, a double-layer-armored submarine optical cable stainless steel pipe, a monolayer-armored submarine optical cable core, a wrapping filling cable core, a double-layer-armored submarine optical cable core, an inner-layer pre-twisting steel wire, a middle-layer pre-twisting steel wire and an outer-layer pre-twisting steel wire, wherein the stainless steel pipe is sleeved outside the optical fiber, the outer-sleeved stainless steel pipes are sleeved on connection-end stainless steel pipes of the monolayer-armored submarine optical cable stainless steel pipe and the double-layer-armored submarine optical cable stainless steel pipe, the wrapping filling cable core is wrapped on the connection-end stainless steel pipes and the outer-sleeved stainless steel pipes, a monolayer-armored submarine optical cable armored stainless steel wire, the inner-layer pre-twisting steel wire, the middle-layer pre-twisting steel wire and the outer-layer pre-twisting steel wire are sequentially twisted outside the wrapping filling cable core, and a polypropylene rope is twisted on the outer-layer pre-twisting steel wire and bonded with the outer-layer pre-twisting steel wire through pitch.

The invention discloses a discharging device for submarine oil-filled cable direct-current withstand voltage test. The discharging device comprises a discharging vehicle, a pull rod, a discharging resistor, a transmission device and a high-voltage wire. The discharging vehicle comprises a discharging tip, a universal ball, a pulley and a vehicle body, wherein the pulley is installed on the side face of the vehicle body and is in rolling connection with the pull rod; the universal ball is rotationally installed at the upper end of the vehicle body; the discharging tip is fixed to the universalball; and the transmission device is used for driving the discharging vehicle to slide along the pull rod to make the discharging tip contacted with or separated from equipment to be discharged. The invention also discloses a discharging method for the submarine oil-filled cable direct-current withstand voltage test. The discharging device and the discharging method can quickly release the residual charges accumulated on the tested equipment body, so that the efficiency of the withstand voltage test is effectively improved, and the safety of the withstand voltage test is ensured.

The invention discloses crush-resistance light cable filler and a manufacturing method thereof. The crush-resistance light cable filler comprises, by weight, 20-22 parts of EPDM rubber, 5-7 parts of modified hard clay, 7-9 parts of natural mica, 4-6 parts of kaolin, 2.5-3.5 parts of silane coupling agent, 1.5-2.5 parts of flame retardant, 0.4-0.8 part of antioxygen, 1.2-1.8 parts of white carbon black, 3-5 parts of silicium-calcium slag, 0.5-1.4 parts of silicone oil, 2.2-3.2 parts of glass beads and 0.3-0.9 part of volcanic ash. Cable gaps can be fully filled, the roundness of the appearance in the cable forming process is guaranteed, and the crush-resistance light cable filler further has the advantages of being high in mechanical strength, good in surface sealing property, capable of achieving the crush-resistance function and low in weight.

A composite cable and method provides for control of the cable, and particularly its vibration modes, in response to a wide range of resonant and non-resonant energy input. The cable comprises a non-Newtonian fluid (NNF) in a cavity of a flexible tube. The NNF is characterized by viscosity that varies with shear stress. A load applies shear stress to the NNF changing its viscosity to dampen motion of the cable. The cable may comprise inner and outer tubes that are separated by a NNF. The inner tube may be filled with the same or different NNF, a Newtonian fluid or void. A magnetic field magnetic field may be applied to further control the viscosity of the NNF. The magnetic field may be controlled in response to a sensed condition of the cable indicative of shear stress in the NNF to provide either positive or negative feedback.

The invention discloses a preparation method and a compacting stranding device of a compacting soft structure conductor. The preparation method and the compacting stranding device of the compacting soft structure conductor are used to prepare the compacting soft structure conductor formed by stranding at least one cable conductor and plied yarns in unidirectional mode. Nonwovens and a wrapping belt such as a metal belt, a semi-conductive belt, a fireproof belt and a waterproof belt wrap the exterior of the compacting soft structure conductor. The preparation method and the compacting stranding device of the compacting soft structure conductor solve the problems that an existing incongruous stranded conductor is not compact in structure and large in external diameter, leaves out a cabling filling step through special sector and tile structures, decreases the external diameter of a cable, and reduces the weight of the cable. Simultaneously, Due to the unidirectional stranding structure of the compacting soft structure conductor, bending performance, especially torsion resistance of the compacting soft structure conductor is greatly improved, and when the compacting soft structure conductor is twisted for 10000 times by +/- 1440 degrees at room temperature, filaments of the compacting soft structure conductor can not be broken, and change value of resistance of the compacting soft structure conductor is less than or equal to 4%.

The invention provides an environment-friendly filled cable material which is prepared from the following raw materials in parts by weight: 80-90 parts of polyvinyl chloride resin, 5-8 parts of environment-friendly stabilizer, 1-2 parts of modifier CPE, 1-2 parts of barium stearate, 40-50 parts of light calcium carbonate, 10-15 parts of hollow glass microsphere, 5-8 parts of talcum powder, 4-5 parts of molybdenum oxide, 3-4 parts of copper oxide, 50-60 parts of tributyl citrate, 0.1-1 part of calcium stearate, 5-6 parts of nano bowlder powder, 15-25 parts of sodium tripolyphosphate, 0.5-1.0 part of PE (polyethylene) wax, 1-2 parts of urotropine and 12-15 parts of modifying filler. The environment-friendly filler has the advantages of environment friendliness, favorable flame retardancy, high temperature resistance, low smoke, easy stripping, favorable compatibility and favorable molding property. The preparation method is simple and easy to implement and convenient for industrial production; and the produced environment-friendly filled cable material has the characteristics of stable quality and low cost.

The present invention concerns fishing adapters for pilling a cable or the like through a hole drilled in a wall or other structure and in one aspect comprises a drill bit connector to enable the adapter to be demountably attached to a drill bit and an item connector to enable a cable or other elongate/linear item to be attached to the adapter, wherein the adapter further has a rotary coupling between the drill bit connector and the item connector to permit the drill bit to rotate as the adapter with cable or other elongate/linear item attached is pulled through a drilled hole without significantly twisting said cable or other elongate/linear item.