170results about How to "Improve lateral pressure resistance" patented technology

The invention is the improvement on a longitudinal drainage plate for silt consolidation, filter cloth and a drainage plate core, which is characterized in that fibrous hot-pressed microporous filter cloth is planar filter cloth hot-rolled by a flat roller, the filter cloth is adhered to the surfaces of convex ribs of the drainage plate core through thermal thawing or a chemical way, the filter cloth adopts silk reeling and hot-press forming separation technology, and the drainage plate core is made of co-polypropylene, thereby overcoming the disadvantages of the prior art; and the aperture of the filter cloth can be adjusted according to treated silt, the drainage plate is difficult to block, the engineering on a soft foundation after the treatment cannot have the settlement after the construction and has smooth drainage and high drainage efficiency, and the plate core has long effective service life.

The invention discloses a sludge treatment method, as well as sludge foamed lightweight concrete produced through the method and application thereof. In the method, sludge produced by sewage treatment first reacts with quicklime so as to form sludge hydrated lime; then the sludge hydrated lime is mixed with cement and water so as to form sludge concrete; foaming agent produces foam by utilizing a foaming system of a foaming machine; and the foam is mixed with the sludge concrete. The sludge treatment method can directly obtain the sludge foamed lightweight concrete. The sludge foamed lightweight concrete has a plurality of functions, which can be used as a filling material, a heat insulating material, a walling material, a sound insulation material, a mine tunnel filling material, an artificial landscape manufacturing material, a road recovery material, a pipe base filling material and the like. The sludge treatment method is low in cost and friendly to environment, can directly produce the sludge foamed lightweight concrete with a plurality of functions, and not only solves the sludge treatment problems in the sewage treatment industry, but also ensures the full utilization of the sludge.

A seawater temperature profile BOTDA measuring method based on an optical fiber Brillouin scattering principle is disclosed. In the invention, a sensitive optical cable is formed by combining a pressure sensing fiber which directly contacts with the seawater and a temperature sensing fiber which shields seawater pressure. A measuring part of a measuring system based on a BOTDA principle comprises: a narrow linewidth laser, an optical coupler, a pulse generator, a first light modulator, a light amplifier, a sweeping-frequency electrooptic modulator, a circulator, a grating filter, an optical isolator, a polarization scrambler, an optical filter, an optical switch and a Brillouin frequency shift detection unit. The sensitive optical cable used in the invention has a small volume, is convenient to be used and possesses good seawater corrosion resistance. The measuring system has high reliability and sensitivity, can provide continuous temperature field distribution of the seawater profile and is suitable for real-timely measuring the seawater temperature profile continuously.

The invention relates to a skeleton type photoelectric composite cable and a manufacturing method thereof. The skeleton type photoelectric composite cable comprises a skeleton and an outer sheath wrapping the skeleton. The skeleton type photoelectric composite cable is characterized in that two sides of the skeleton are respectively provided with a skeleton groove whose radial section is a circle or a large semicircle, optical communication units are arranged in the skeleton grooves in a laying manner, and power supply conducting wires are arranged at the upper side and the lower side of the skeleton. According to the cable, optical units and electric units are integrated so that wiring space resources are greatly saved, the construction cost is reduced, the structural setting is reasonable, the size is small, the optical cable is flexible and light, the optical communication units in the optical cable are easily separated and continued, the mechanical performance, the weather resistance, and the flexibility performance are excellent, and the optical cable can be applied to indoor and outdoor applications. The manufacturing method is simple and reasonable, the quality and the process are easily controlled, the production efficiency is high, and the manufacturing cost is low.

The disclosed SOI power device with VLk SOI, Lk SOI, VLk PSOI and Lk PSOI four structures apples the low-k (dielectric coefficient) material to increase longitudinal electric field strength of the buried layer and modulate Si active electric field by the additional field on variable-k layer interface, while decrease the capacitor between drift region and substrate to improve on-off speed. This invention can be used to lots of new high pressure-resistant devices, such as lateral dual-diffusion FET, PN diode, etc.

The invention relates to a buoyancy controllable optoelectrical composite cable comprising a cable core and a sheath, wherein the sheath is sleeved outside the cable core, the cable core comprises a reinforcing core, more than one optic bundle tube and a power lead, wherein the optic bundle tubes are twisted around the reinforcing core and comprise a loose tube, optical fibers arranged in the loose tube and filling fiber paste. The buoyancy controllable optoelectrical composite cable is characterized in that more than one buoyancy control unit twisting layer is additionally arranged in the sheath, a buoyancy control unit is a physical foamed plastic filling rope or a hollow plastic tube, the reinforcing core is formed by covering a plastic cushion layer by aramid fiber, the sheath mainly comprises a first water-blocking taping layer, two buoyancy control unit twisting layers, a second water-blocking taping layer, an aramid fiber reinforcing layer and an outer polyurethane sheath which are coated on the cable core sequentially, and a copper core signal wire and/or a coaxial cable signal wire are/is arranged in the cable core. The invention has the advantages of reasonably and flexibly controlling the buoyancy of an optoelectrical composite cable, satisfying special application requirements of operation positioned on a water surface or underwater and obviously improving the tension intensity.

The present invention relates to a submarine photoelectric composite cable non-universal type optical unit and its manufacture method. Its structure includes the following several portions: several optical fibres, plastic tube, stainless steel tube, water-proof material, high-strength armouring steel wire and external protective layer. Said invention also provides the concrete steps of its manufacture method.

The invention discloses a side pressure resistant submarine optical fiber cable core, which consists of an optical fiber, a protective tube, a side pressure resistant shell, a feed or detection copper tuber or copper strap, an internal armored steel wire, an insulating sheath and a filling wire. The side pressure resistant submarine optical fiber cable core is characterized in that a layer of tubular strong side pressure resistant shell stranded by a special-shaped wire is stranded outside the optical fiber unit. The side pressure resistant submarine optical fiber cable core has the advantages of remarkably improving the tensile stress and side pressure resistance of the cable core, ensuring that the submarine optical fiber is not damaged and facilitating safer and more reliable operation of optical communication along with very firm structure.

An optical fiber comprises a glass fiber which comprises a core and a cladding, a primary resin coating layer which covers the periphery of the glass fiber, and a secondary resin coating layer which covers the periphery of the primary resin coating layer. The glass fiber is a multimode fiber having a core diameter of 40-60 μm and a cladding diameter of 90-110 μm, and the primary resin coating layer is a layer formed by curing a curable resin composition which comprises oligomers, monomers, and a reaction initiator, the curable resin composition containing a one-end-capped oligomer in an amount of 30% by mass or larger based on all the oligomers.

The invention provides a semiconductor device with a super junction structure. The semiconductor device comprises an N-type doped semiconductor substrate and an N-type doped epitaxial layer, wherein the N-type doped semiconductor substrate and the N-type doped epitaxial layer are sequentially arranged from bottom to top, and a first P-type filling well region, a second P-type filling well region and a third P-type filling well region are arranged inside the N-type doped epitaxial layer. A first P-type doping region is arranged on the upper side of the first P-type filling well region and provided with an N-type doping region, and a second P-type doping region is arranged on the upper side of the second P-type filling well region. A terminal pressure-withstanding structure T is arranged on the periphery of a primitive cell source electrode region C, wherein the terminal pressure-withstanding structure T comprises the second P-type filling well region, the second P-type doping region, the third P-type filling well region and the corresponding part of the N-type doped epitaxial layer, and the primitive cell source electrode region C comprises the first P-type filling well region, the first P-type doping region, the N-type doping region and the corresponding part of the N-type doped epitaxial layer. The parts, corresponding to polycrystalline silicon arranged in a part of dielectric layer above a gate oxide layer, of the terminal pressure-withstanding structure T and the primitive cell source electrode region C form a gate electrode structure and a polycrystalline silicon field plate structure respectively.

A high-voltage lateral double-diffused metal oxide semiconductor (LDMOS) device comprises a P-type channel region, an N-type drift region, a voltage-resistance layer, and a P-type substrate located at the bottom, the voltage-resistance layer being provided between the P-type substrate and the N-type drift region. For the high-voltage LDMOS device, the trapping time in the process is shortened by adding a voltage-resistance layer, thereby increasing a sectional area of a current channel, improving the on resistance, and further enhancing lateral voltage resistance by enhancing longitudinal voltage resistance.

The invention brings forward a groove MOSFET with a terminal voltage-withstanding structure and a manufacturing method of the groove MOSFET. Grooves are formed in a cellular area and a terminal area of the groove MOSFET respectively. The grooves of the terminal area are at least two enclosed annular grooves which surround the cellular area. At least one annular groove, which is close to the cellular area, is an isolation ring which is connected with a zero potential. At least one annular groove, which is close to a scribing channel, is a cutoff ring which is connected with the scribing channel. According to the groove MOSFET with the terminal voltage-withstanding structure, the isolation ring is connected with the zero potential so that electric leakage can be effectively inhibited; and the cutoff ring is connected with the scribing channel so that carriers are not accumulated along the cutoff ring, and thus isolation effect and voltage-withstanding effect of the terminal voltage-withstanding structure are enhanced. According to the manufacturing method, voltage-withstanding and electric leakage problems of the groove MOSFET prepared by the three-layer photo-etching technology are solved, transverse electric leakage of the groove MOSFET is reduced, voltage withstanding of devices is enhanced, technology process is simplified and manufacturing cost is lowered without increasing technology complexity.

The invention provides a flame retardant optical cable which comprises a cable core and also comprises a first water blocking belt layer, a metal composite belt layer, a flame retardant inner protective layer, a second water blocking belt layer, a ceramic flame retardant composite belt layer, a steel plastic composite layer and a flame retardant outer protective layer which are orderly arranged outside the cable core. In order to prevent the cracking of a low smoke halogen free flame retardant polyolefin outer sheath, when the flame retardant optical cable is laid, the laying speed should be slowed down appropriately. The optical cable has excellent bending and compression performance and excellent flame retardant and fire resistant performance. The ceramic flame retardant composite belt arranged in the outer sheath is soft in a normal state, the bending performance of the optical cable is not affected, after the optical cable is laid, a hard ceramic shell can be formed to protect the optical cable. The smoothness of a line in a fire is ensured, the system failure of optical cable transmission is prevented, and the safety of life and property is protected to the maximum.

The invention provides a lateral double-diffused metal oxide semiconductor field effect transistor with adjustable field plates. The lateral double-diffused metal oxide semiconductor field effect transistor comprises a field oxide layer and a drift region located at the lower part of the field oxide layer, wherein the surface of the field oxide layer is provided with a plurality of adjustable field plates; two adjacent adjustable field plates are spaced at a set distance; and each adjustable field plate is connected with a regulating capacitor. Inductive charge quantity and inductive potentialon each adjustable field plate can be adjusted through adjusting the sizes of the adjustable field plates and positive and negative electrodes of the regulating capacitor, so that uniform surface transverse electric field distribution is obtained in the drift region. According to the lateral double-diffused metal oxide semiconductor field effect transistor, the surface transverse electric field distribution of the drift region can be improved and the lateral double-diffused metal oxide semiconductor field effect transistor has very high lateral voltage endurance capability and very low on-resistance.

The invention discloses a pressure-sensitive optical cable with armor layer, which takes a signal optical fiber and fiber yarns spirally wound on the signal optical fiber and which is peripherally provided with an armor layer and an outer protective layer in sequence. As pressure is applied to the pressure-sensitive optical cable, the fiber yarns spirally wound on the signal optical fiber lead the signal optical fiber to bending deformation in order to change the bending loss of the signal optical fiber. As a result, pressure signals are converted into optical signals which are then transmitted via the signal optical fiber to achieve the purpose of remote measurement. The armor layer made of fine fiber material has the characteristics of excellent bending flexibility, facilitating manufacture, storage, transportation and use of the pressure-sensitive optical cable, similarity to common optical cables, being capable of remarkably reducing manufacturing and use costs, and having no impact on pressure detection. The pressure-sensitive optical cable has simple structure, reasonable design, convenient processing and manufacturing, diversified using ways, high sensitivity and good using effect, and distributive pressure measurement can be realized by means of optical time domain reflectometer or other measurement instruments.

The invention discloses a composite jumper cable for an offshore oil platform, and relates to the technical field of cable connection between offshore oil platforms, between an offshore oil platform and an oil tanker, between oil tankers, and between an offshore fixed facility and a movable facility, and transmission of power energy resources, control signals, communication signals, oil, gas, water and the like. The composite jumper cable comprises three power transmission split-phase protecting bush insulating cable core units, an optical fiber communication unit, pipeline units, a control cable unit, a filling unit, a buffering and isolating protection unit, high-tensile steel wire reinforcing units and an outer protection layer unit. The three same power transmission split-phase protecting bush insulating cable core units are twisted, the pipeline units are embedded into three large gaps respectively, the optical fiber communication unit and the control cable unit are embedded into parts among the pipeline units respectively, the solid filling unit is arranged in an integral cabling unit, the buffering and isolating protection unit wraps the cabling unit, two layers of the high-tensile steel wire reinforcing units wrap the buffering and isolating protection unit, and the outer protection layer unit wraps the high-tensile steel wire reinforcing units in a squeezing mode.

The invention discloses a silicon on insulator (SOI) pressure resistant structure with interface lateral variation doping, and relates to a semiconductor power device comprising a substrate layer, a medium buried layer, an active semiconductor layer and an interface lateral variation doping layer, wherein, the medium buried layer is arranged between the substrate layer and the active semiconductor layer; and the interface lateral variation doping layer is arranged between the medium buried layer and the active semiconductor layer, in the invention, by adopting the condition that the interface lateral variation doping layer is arranged in the active semiconductor layer on the interface of the medium buried layer, when the structure is used in the semiconductor device, and the dosage concentration of the silicon at the top of the lateral variation doping layer terminal interface is higher, thus effectively improving the longitudinal pressure resistance and the lateral pressure resistance of the device, thus the structure can effectively improve the pressure resistance of the whole device, and remit the problem that a 'hot spot' area is generated because the dosage concentration of a source end of a lateral variation doping structure of the whole active semiconductor layer is too low, which can be realized in a thick active semiconductor layer.

A process for producing an optical fiber including a glass fiber, a primary resin coating layer which covers the periphery of the glass fiber, and a secondary resin coating layer which covers the periphery of the primary resin coating layer, wherein the primary resin coating layer is formed by curing a curable resin composition which includes one or more oligomers, one or more monomers, and a reaction initiator, the curable resin composition containing a one-end-capped oligomer in an amount of 30% by mass or larger based on all the oligomers. The optical fiber produced by this production process does not deteriorate in low-temperature transmission loss, because the primary resin coating layer is inhibited from generating voids even when having a low Young's modulus.

The invention provides a super-strength large core number multi-purpose optical fiber cable which is light in weight, small in external diameter, more in inner core, and capable of meeting different laying environments. A brand novel optical fiber cable is provided for FTTx establishment in our country. The sequentially arranged cross section structure of the super-strength large core number multi-purpose optical fiber cable comprises an outer sheath, a metal hose and a water-blocking tape from outside to inside. An inner cavity of the water-blocking tape is a cabling cable core. The outer side of the cabling cable core is covered with the water-blocking tape. The center of the cabling cable core is provided with a centre reinforcer. The outer ring surface of the centre reinforcer is evenly provided with three or more optical cable units. Each optical cable unit comprises a micro beam tube arranged outside, fiber optical bundles arranged in the center and water-blocking yarns arranged between the inner wall of the micro beam tube and the outer walls of the fiber optical bundles.

The invention discloses an optical cable with strong lateral pressure resistance, which comprises an outer sheath (1), a support sleeve (2) arranged in the outer sheath (1), and an inner sheath arranged in the support sleeve (2). Sleeve (5), several optical fiber sleeves (6) arranged in the inner sheath (5) and several optical fibers (7) arranged in the optical fiber sleeve (6), the inner side of the support sleeve (2) is set There are several protrusions (3), and the inner sheath (5) is supported by the protrusions (3). The beneficial effects of the present invention are: the present invention supports the inner sheath by providing protrusions, and when the outer sheath and the supporting sleeve are twisted, the protrusions can be deflected to reduce the internal transmission of the optical cable to the inner sheath. Torque, and can reduce the wear of the inner sheath, thereby improving the torsion resistance and lateral pressure resistance of the optical cable, and prolonging the service life of the optical cable.

The invention relates to a method for manufacturing a filling type cable. The method comprises: coloring is carried out on a fiber; a blank pipe is manufactured at the periphery of the colored fiber, the blank pipe is filled with filling ointment, and then plastic sleeving is completed to form a fiber plastic pipe; the fiber plastic pipe encircles the periphery of a reinforced element in a twisting manner to form a twisting body, an ethylene-vinyl acetate copolymer material coats the periphery of the twisting body to form a cable core; and a sheath protection layer is manufactured at the periphery of the cable core to form a filling type cable. According to the manufacturing method, the process is simple; the generated cable core number is large; the structure is stable; and the anti-side pressure and anti-impact capabilities are high.

The invention discloses a profile steel truss double-skin wall structure and a construction method thereof. The profile steel truss double-skin wall structure comprises a main body structure, a double-skin wall structure unit and a cast-in-place concrete layer, the double-skin wall structure unit is transversely connected in a spliced manner; the cast-in-place concrete layer is cast in the double-skin wall structure unit; the double-skin wall structure unit comprises a first precast concrete slab and a second precast concrete slab; a group of profile steel trusses are transversely arranged between the first precast concrete slab and the second precast concrete slab at an interval in parallel; each profile steel truss is arranged vertically in the length direction, a chord member on one side of each profile steel truss is cast in the first precast concrete slab, the chord member on the other side of each profile steel truss is cast in the second precast concrete slab. Scaffold and formwork support procedures in traditional cast-in-situ technology are simplified, labor force is saved, potential safety risks caused by high-formwork support are avoided, and the technical problems thatexisting steel bar truss double-skin walls have small thickness and height not exceeding 4 m and existing double-skin wall structures have low overall rigidity and concrete lateral pressure resistanceare solved.