126results about How to "Simplify the difficulty of installation" patented technology

The invention provides a double-end traveling wave fault positioning method of a power transmission line. The method comprises the following steps that: S1, one detection device for detecting travelling wave signals is installed on the power transmission line every 10-15 km; S2, a sensor module receives current and voltage signals in the circuit, a sampling system carries out sampling and recording on the current and voltage signals, an A / D conversion module processes the signals, and the data is transmitted to a main control center through a communication module; S3, after the main control center analyzes the received data and discovers a fault traveling wave signal, a second fault traveling wave signal in the detection device An adjacent to the detection device Am corresponding to the fault traveling wave signal is found, and analysis and calculation are carried out according to the fault traveling wave signal and the second fault traveling wave signal, the time for a first travelling wave head to respectively arrive at the detection devices Am and An is obtained; and S4, the position of a fault point is calculated. According to the invention, the fault position is accurately calibrated, and the precision is high.

The invention discloses a combined prefabricated base board and composite floor slab structure and a composite floor slab construction method and relates to the field of building structures. The problems are solved that the bending, shearing and cracking resistance capability of prefabricated base boards of existing composite floor slabs cannot be adjusted after forming; a variety of prefabricatedbase boards exist and are inconvenient to prefabricate, produce, transport and install; when spans are larger, the thickness is increased, the cost is high and hoisting is difficult. According to theadopted technical scheme, a combined prefabricated base board comprises a prefabricated base board body and a supporting part, a connector is embedded in the prefabricated base board body, the upperend of the connector penetrates out of the upper surface of the prefabricated base board, any one of the upper side and the lower side of the prefabricated base board body is connected with the supporting part, and the supporting part is detachably connected with the connector. The upper surface of the prefabricated base board body is poured with a later-poured concrete composite layer to form thecomposite floor slab structure. The prefabricated base board body is connected with the supporting part and can be made thinner, the bending resistance capability of the prefabricated base board bodyat a construction stage can also be adjusted, the types of combined prefabricated base boards are decreased, formwork-free construction is achieved, and development of prefabricated buildings is promoted.

The invention discloses an LED (light-emitting diode) advertising lamp box light source based on a 220V AC (alternating current) power supply, mainly solving the problem that the existing LED advertising lamp box light source can not be directly connected with an external 220V AC power supply. The LED advertising lamp box light source based on a 220V AC power supply is characterized by comprising an LED advertising lamp box power supply and a PVC (polyvinyl chloride) shell for encapsulating the LED advertising lamp box power supply; the LED advertising lamp box power supply comprises an aluminum-based circuit board and a power supply circuit which is arranged on the aluminum-based circuit board and directly connected with a 220V AC power supply through a connector; and the power supply circuit comprises a piezoresistor R1, a rectifier D1 and a current regulative diode D2, the piezoresistor R1, the rectifier D1 and the current regulative diode D2 form a circuit with an LED and an external 220V AC power supply, and a electrolytic capacitor C1 connected in parallel with an LED is arranged in the circuit. Through the scheme, the purpose of directly connecting an external 220V power supply is achieved, the problem of voltage attenuation is avoided, the waterproof effect is guaranteed, and the LED (light-emitting diode) advertising lamp box light source has a high practical value and a high popularization value.

The invention provides a detection apparatus of carrier envelope phase signals. The detection apparatus is characterized by comprising a pulse oscillator, a fiber amplifier, a spectrum spread device and a collinear type self-reference f-2f carrier envelope phase detection module which are successively connected through an optical path, wherein the collinear type self-reference f-2f carrier envelope phase detection module comprises multiple lenses, a PPLN crystal, a YV04 crystal and a photoelectric detector which are connected through an optical path, the lens is used for converting fiber light output by the spectrum spread device into space light, the YV04 crystal is used for introducing time-delay amounts of fundamental frequency light and frequency multiplication light, and the YV04 crystal is internally of an oblique cleft structure whose left portion and right portion can be vertically adjusted. Femtosecond pulses are injected into high-nonlinearity fibers for generating needed long-wave signals and short-wave signals, phase delays of long-wave signal pulses and short-wave signal pulses are optimized through polarization dispersion and envelope velocity dispersion of the YV04 crystal, and compared to a method of modifying a time-delay amount by use of space light path adjustment in a conventional apparatus, the accuracy is greatly improved.

The invention discloses an internal mold and a manufacturing method thereof, and a precast box girder and a manufacturing method thereof. The internal mold of the precast box girder comprises a skeleton sheet and an internal mold panel, wherein the internal mold panel is formed by splicing multiple pieces of strip-shaped steel; and the internal mold panel is fixed on the outer side of the skeleton sheet in a surrounding mode. The invention does not need to adopt heavy machinery such as a small gantry crane so as to simplify the mounting difficulty; and during disassembling, the internal mold can be disintegrated naturally only by disconnecting the strip-shaped steel with the skeleton sheet, so that disassembling is convenient and short time is consumed. In addition, compared with the internal mold panel with the whole sheet, the internal mold panel with the strip-shaped steel has light self weight. The whole internal anti-deformation capability can be improved by increasing the skeletons or manufacturing the skeleton through the materials with higher hardness, so that the anti-deformation capability of the invention is stronger.

The invention discloses a vehicle-mounted conveying belt structure which comprises a conveying belt. A first conveying belt guiding device penetrates through one end of the conveying belt, and a second conveying belt guiding device penetrates through the other end of the conveying belt; and the first conveying belt guiding device and the second conveying belt guiding device are pressed and adheredto the inner side surfaces of the two ends of the conveying belt correspondingly and are used for tensioning and pulling the conveying belt to advance, so that the linear speeds of the conveying beltand a conveying chain cross beam corresponding to the conveying belt running at the two ends of the conveying belt are consistent, and the problems that the chain cross beam moves relative to the conveying belt so as to abrade the conveying belt due to the fact that the linear speeds of the conveying belt and the chain cross beam are inconsistent at the two ends of the conveying belt, and then the service life of the conveying belt is influenced are avoided. The vehicle-mounted conveying belt structure has the advantages that a conveying chain is low in stress, long in service life, capable of adapting to installation requirements of conveying belt chains of different types, strong in universality of parts, greatly reduced in types of parts and reduced in generation cost; and the conveying belt is small in abrasion and long in service life.

The invention discloses a concentrated fragrance-type edible oil hot-squeezing and refining small-set. The concentrated fragrance-type edible oil hot-squeezing and refining small-set realizes combination of a hot-squeezing process and a refining process. The concentrated fragrance-type edible oil hot-squeezing and refining small-set utilizes edible oil squeezing special-purpose filters, simplifies a technical process and reduces an equipment cost. The concentrated fragrance-type edible oil hot-squeezing and refining small-set utilizes a combined frame and removable support legs are connected to the frame by bolts and are arranged on a chassis so that transport is convenient and installation difficulty is simplified. An oil press is arranged below a stir-frying pan. A processed oil material is directly added into the oil press so that heat dissipation-caused influence on an oil extraction rate is avoided and continuous production is realized. A separator is arranged above a drying tank and a water-ring vacuum pump is arranged below the drying tank. Through effects of the vacuum pump, a vacuum environment in the drying tank is formed and low-temperature vacuum dehydration of edible oil in the drying tank is realized. The concentrated fragrance-type edible oil hot-squeezing and refining small-set guarantees a concentrated fragrance degree and volatile impurities can be separated by the separator. The concentrated fragrance-type edible oil hot-squeezing and refining small-set utilizes the two special-purpose filters to realize alternative filtration, can produce the high-quality concentrated fragrance-type edible oil and can guarantee continuous production effects.

The invention provides a refrigerator. The refrigerator comprises: a liner, in which a storage chamber, an air supply duct and an evaporator mounting cavity are formed; an evaporator, which is mountedin the evaporator mounting cavity; a defrosting heating wire, which is arranged corresponding to the evaporator and is used for heating and melting frost deposit on the evaporator in a defrosting mode; a storage container, which is arranged in the storage chamber; a deoxygenization and moisture permeable assembly, which is arranged on the storage container, and is provided with an oxygen consumption part which faces the inside of the storage container and is used for consuming oxygen through electrochemical reaction and an electrolysis part which faces the outside of the storage container andis used for electrolyzing water vapor outside the storage container; wherein the air supply duct is provided with an air inducing port for supplying air to the electrolysis part, and the defrosting heating wire is further configured to improve the humidity of airflow fed through the air inducing port by heating in a humidifying mode, so that water vapor required by reaction can be supplemented tothe deoxygenization and moisture permeable assembly, and the deoxygenization efficiency is improved.

The invention provides a steel cable supporting net for a large-span net shaped ceiling system, and aims at solving the problems that the exposed house frame and supporting system of the open type light roof in the existing public building influence the artistic effect of the large space, and the added decorative ceiling is limited by the stressing of the lifting rods supporting the house frame. The steel cable supporting net comprises a plurality of steel cables and a plurality of adjustable length mechanisms, wherein the steel cables are knitted into a net shape; the end parts of the steel cables are arranged between structure ring beams through the adjustable length mechanisms. According to the steel cable supporting net, the gravity of a net shaped ceiling is transferred to the structural ring beams, thus the form of transferring the gravity of the net shaped ceiling to the house frame structure through a ceiling and a conversion layer in the prior art can be replaced, and the house frame is free of stressing; a plurality of clamp connecting parts for suspending the net-shaped ceiling are arranged on the steel cables; the knitting direction of the steel cables are corresponding to the style direction of the net-shaped ceiling, and therefore, the steel cable supporting net can be hidden above the net-shaped ceiling, and the problem that the lifting rods cannot be hidden in the traditional scheme can be solved.

The invention discloses an automobile seat control system and an automobile seat assembly and relates to the field of automobiles. The automobile seat control system provided herein comprises an ECU (electronic controller unit) control system, a USB (universal serial bus) module control system and an installing box; the ECU control system is electrically connected with the USB module control system, and both the ECU control system and the USB module control system are arranged inside the mounting box. The automobile seat assembly employs the above automobile seat control system. The automobileseat control system and the automobile seat assembly provided herein allow the ECU control system and the USB module control system to be installed on a seat frame with less difficulty and improved assembly efficiency.

The invention provides a refrigerator, which comprises an inner container, and a storage compartment is formed inside; an air duct cover plate arranged on the front side of the back wall of the inner container so as to define an air duct with the inner container; a storage device arranged in the storage compartment and comprises a storage container, and a storage space is formed in the storage container; a deoxidizing and moisture-permeable assembly arranged on the storage container and configured to consume oxygen in the storage space and electrolyze water vapor outside the storage space through an electrolytic reaction under the action of electrolytic voltage, and an air inducing opening used for providing air for the face, facing the outside of the storage container, of the deoxidizing and moisture-permeable assembly is arranged on the air duct cover plate; and an air guide fan arranged in a channel between the air inducing opening and the deoxidizing and moisture-permeable assembly and configured to promote the formation of air flow which is blown from the air inducing opening to the surface, facing the outside of the storage container, of the deoxidizing and moisture-permeable assembly, so that the air flow in an air duct can be guided from the air inducing opening to the deoxidizing and moisture-permeable assembly, and water vapor required by the reaction is supplemented for the deoxidizing and moisture-permeable assembly, and the deoxidizing efficiency is improved.

The invention discloses a spent fuel storage tank for a nuclear power plant. The spent fuel storage tank comprises a cylinder, a top cap which is fixedly connected with the top of the cylinder and isprovided with a first draining hole and a first inflating hole in a running through manner, a shielding cover plate which is arranged inside the cylinder and is arranged corresponding to the top cap,a bottom plate which is fixed at the bottom of the cylinder, a fuel grid which is arranged in the cylinder and put on the bottom plate, and a heat-conductive metal block which is arranged between theinner wall of the cylinder and the fuel grid, wherein a second draining hole runs through the shielding cover plate, and is arranged corresponding to the position of the first draining hole, a secondinflating hole is formed corresponding to the first inflating hole in a running through manner; draining components are inserted in the first and second draining holes in an embedded manner; inflatingcomponents are inserted in the first and second inflating holes in an embedded manner; and the draining components and the inflating components are fixed on the inner surface of the cylinder. Compared with the prior art, the spent fuel storage tank has the advantages that the cover plate is convenient in assembly positioning, solder sealing and cut retrieving operations and is simple in processing manufacture, and horizontal storage and vertical storage are available.

The invention provides an electric appliance fast-assembly heat dissipation device and a manufacturing method thereof. The device comprises a heating element, a radiator and a connector. The connectoris a middle heat dissipation block; the first side face of the heating element abuts against the first side face of the middle heat dissipation block; a convex strip is arranged on the second side surface of the middle heat dissipation block; a groove is formed in one side surface of the radiator; an elastic part extends from the top end of the middle heat dissipation block; the elastic part is of a u-shaped, and the tail end of the elastic part is connected with a clamping part; and the heating element is clamped in the cavity. During installation, the heating element is clamped in the cavity of the middle radiator firstly, then the protruding strip of the middle radiator is clamped in the groove in the radiator, due to interference fit, rapid heat conduction connection of the heating element and the radiator is completed without any bolt, the effect is improved, and the installation difficulty is simplified.