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

The invention discloses a method and system for precisely positioning a mine. The method for precisely positioning the mine comprises the steps that a plurality of positioning base stations and a plurality of marking cards which are used for positioning and are communicated with the positioning base stations through the wireless technology are arranged; distance data are calculated by measuring time spent by signals sent by the positioning base stations flying to the marking cards or the distance data are measured by measuring the time spent by signals sent by the marking cards flying to the positioning base stations; directed wireless antennas are arranged in roadway directions according to the roadway position of the positioning base stations under a coal mine well, the direction information of the positioning cards relative to the positioning base stations is calculated by obtaining antenna information used for communication between the positioning base stations and the positioning cards, and therefore the precise positions of the marking cards are obtained, and precise positioning is achieved. The method for precisely positioning the mine can be implemented under the condition that positioning auxiliary base stations are not required to be deployed, cost is reduced, engineering installation and deployment difficulty are greatly simplified, and time synchronization of the positioning base stations and the marking cards is not needed.

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 an image collecting device and collecting method capable of collecting incident light, scattered light and transmission light information about dust concentration. The image collecting device comprises a light emitter, a light splitter and a light collector, wherein the light splitter splits probe light emitted from the light emitter into transmission light and reflected light, the light collector collects the reflected light and the transmission light penetrating through dust and comprises an optical fiber branch circuit, an optical fiber main circuit, an optical fiber coupler, a collection lens and a CCD camera, the optical fiber branch circuit is arranged at an exit port of the reflected light, the optical fiber main circuit is arranged at an exit port of the transmission light, light outlets of the optical fiber branch circuit and the optical fiber main circuit are connected to an inlet of the optical fiber coupler, and the collecting lens and the CCD camera are connected to an outlet of the optical fiber coupler sequentially. According to the device, the design complexity of the incident light, scattered light and transmission light collecting device is simplified, besides, the measurement accuracy of the incident light, scattered light and transmission light information is improved, and measurement signals can be collected in real time on line.

The invention provides a power transmission line fault positioning method based on a non-contact sensor. The method comprises the following steps of: S1, installing one detection device for detecting travelling wave signals every 10-15 km on a power transmission line; S2, receiving current and voltage signals in the circuit, and transmitting the current and voltage signals 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, finding a second fault traveling wave signal in the detection device An connected with the detection device Am corresponding to the fault traveling wave signal, and according to the fault traveling wave signal and the second fault traveling wave signal, calculating the time for a first travelling wave head to respectively arrive at the detection devices Am and An; and S4, calculating the position of a fault point. According to the invention, the power transmission line fault positioning method is high in positioning precision and can be widely applied to a high-voltage power transmission network.

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 provides a double-layer spherical tank and a hoisting method thereof. The double-layer spherical tank comprises an outer-layer spherical tank, an inner-layer spherical tank, a plurality of pillars and a thermal insulation material layer filled between the inner-layer spherical tank and the outer-layer spherical tank, one ends of the plurality of pillars are respectively in tangent connection with a plurality of shell plates, and joints of the outer-layer spherical tank and the plurality of pillars are located on a circular seam formed between spherical shell plates of an upper belt and a lower belt of the spherical tank. The invention further provides a hoisting method for the double-layer spherical tank. The hoisting method comprises the following steps: 1) hoisting the inner-layer spherical tank connected with the plurality of pillars in place; and 2) based on the fact that joints of the outer-layer spherical tank and the plurality of pillars are located on the circular seam formed between spherical shell plates of the upper belt and the lower belt of the spherical tank, successively hoisting shell plates of the outer-layer spherical tank until the integral double-layer spherical tank is shaped through adjustment. With the hoisting method provided by the invention, installation difficulty of the double-layer spherical tank can be lowered down, integral installation quality can be improved, and an installation period can be shortened.

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 split type combined permanent magnet brushless motor for an electric vehicle. A rotor is coaxially positioned in the internal of a stator; a rectangular neodymium iron boron permanent magnet steel and two same rectangular ferrite permanent magnet steels are fixedly embedded in each pole of the rotor; the neodymium iron boron permanent magnet steels are close to air gaps and are symmetrical relative to the central line of the rotor poles; the two ferrite permanent magnet steels are close to a rotation shaft, are distributed on the two sides of the central line of the rotor poles and are symmetrical relative to the central line of the rotor poles; a magnetic conductive bridge is between the two ferrite permanent magnet steels; the permanent magnet steel on each pole is magnetized along the tangential direction of the circumference; the magnetizing directions on the same pole are the same, and the magnetizing directions on the adjacent two poles are opposite; the rare earth permanent magnet material and the non-rare-earth ferrite permanent magnet material are adopted at the same time; on the basis of ensuring the power density and the torque density of the permanent magnet motor with a small amount of rare earth, the cost of the motor is reduced by more than 50%; and in addition, the requirements on the torque and the power in the electric vehicle applications can be met on the premise of keeping the relatively high power density and the torque density.

The invention discloses an ultra-high temperature resistant internal rotor magnetic coupler without internal magnetism; an external magnetic rotor (4) is connected onto a spindle (or a motor spindle); an isolating sleeve (7) is connected between the external magnetic rotor (4) and an internal rotor (5) without internal magnetism; the internal rotor (5) without internal magnetism mainly comprises an internal magnetic conductive ring (51), a high-flux rate magnetic level (52) which is made of a soft magnetic material, and an outer shell (53), wherein: the high-flux rate magnetic level (52) which is made of the soft magnetic material is arranged on the internal magnetic conductive ring (51); a support ring (54) inner layer is arranged on the internal magnetic conductive ring (51); the outer shell (53) is arranged outside the high-flux rate magnetic level (52) which is made of the soft magnetic material and a support ring (54), and is sealed (welded) by the support ring (54); and a waveform snap ring (55) which is in interference fitness with a shaft is arranged in the inner shaft hole of the support ring (54). The invention provides the novel ultra-high temperature resistant internal rotor magnetic coupler without internal magnetism, which has a simple structure, low cost and low installation difficult, improves the working efficiency, is applicable to magnetic force pumps (vortex pumps, centrifugal pumps and gear pumps), high-temperature magnetic force coupling, high-temperature fans, vacuum pumps and connectors on special occasions.

The invention relates to a sliding nozzle device which comprises a pedestal, sliding plate bricks and a sliding support, wherein a pulley is arranged between the pedestal and the sliding support, a spring locking mechanism is respectively arranged at both outer sides of the pedestal and the sliding support, a link mechanism formed by a rocking arm and a hook bar is respectively hinged at one end part of the pedestal and the sliding support, an upper sliding plate brick chamber is arranged in the middle on the lower surface of the pedestal, an upper sliding plate brick is installed in the chamber, a through hole is arranged at the upper part of the chamber, an upper nozzle is installed at the upper part of the chamber, a lower sliding plate brick chamber is arranged in the middle on the upper surface of the pulley, a lower sliding plate brick is installed in the chamber, a lower nozzle mounting hole is arranged at the lower part of the chamber of the pulley, a step type snap ring is arranged on the inner edge of the hole, and a lower nozzle with steps is installed in the lower nozzle mounting hole; the chambers for installing the upper sliding plate brick and the lower sliding plate brick inside the pedestal and the pulley are both oblong chambers respectively provided with a small circular arc at one end and a large circular arc at one end, and the large circular arc and the small circular arc are in tangent transitional connection; and the device has lower cost, convenient operation and accurate control, and is very beneficial to popularization and application.

The invention relates to a driving axle of a crawler loader. The driving axle comprises a half shaft, a bearing, a half shaft pipe sleeve, a wheel hub, an axle casing and a differential mechanism, wherein the half shaft is arranged in a main hole of the wheel hub, the half shaft pipe sleeve is sheathed on the half shaft, one end of the half shaft is connected with the wheel hub, and the other end of the half shaft is connected with the differential mechanism. The driving axle solves the problems of complicated structure, installation difficulty, small force and the like of the original driving system of the crawler loader, and meanwhile, a transfer case is omitted for the crawler loader, so the structure is compacted, and the cost is reduced.

The invention belongs to the field of building decoration ceilings and particularly relates to a large-span net ceiling system and a mounting method thereof on account of the problems that the large-space attractiveness effect is affected by the exposure of roof trusses and support systems, and increased decorative ceilings are limited by suspension rod support roof truss stress. The system comprises a cable net structure, a net ceiling and a plurality of snapping sheet connectors. The cable net structure is arranged on a structural ring beam and is woven through a plurality of pre-stress processed steel cables, and the net ceiling is fixed on the cable net structure through the snapping sheet connectors. By means of the system and the mounting method, the net ceiling gravity can be transferred to the structural ring beam through the cable net structure, the form of transferring of the net ceiling gravity to the roof truss structure through the ceiling and a transfer layer in the prior art can be cancelled, and the cable net structure can be hidden above the net ceiling, so that the project quality and the attractiveness of the net ceiling are guaranteed.

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 discloses a six-dimensional acceleration acquisition method, and relates to acceleration acquisition methods. In order to solve the problem that an existing six-dimensional acceleration acquisition method is complex, the method comprises the steps that a 16-accelerometer detection space model is built; the model is cylindrical, eight two-shaft accelerometers are evenly divided into two groups, 90-degree angles are formed between every four two-shaft accelerometers, and the top face or the bottom face of the cylinder is formed; the two-shaft accelerometers on the top face correspond to the two-shaft accelerometers on the bottom face in position, the distance between the top face and the bottom face is L, and the radius of the cylinder is R; two sensitive axes of every two-shaft accelerometers are perpendicular in direction; according to the model, the two-shaft accelerometers are arranged at the tail end of a robot to be tested, and the central axis of the tail end of the robot to be tested is taken as a central axis of the model; the two-shaft accelerometers are utilized for measuring the linear acceleration and the angular acceleration of the tail end of the robot to be tested in the carrier coordinate system. The method is used for collecting the six-dimensional acceleration of the tail end of the robot to be tested.

The invention discloses a bus connector, which comprises two bus connecting seats, which are bilaterally symmetrical, left and right gas tank mounting plates respectively connected with each of the bus connecting seats, a sealing gasket arranged between the two bus connecting seats, and a conductive inner core communicated with the two bus connecting seats, wherein each of the bus connecting seats comprises an inner conductive part, an insulation layer and a shield cover, which are integrated; each shield cover is a ring body arranged on the corresponding insulation layer in a matched way and comprises a conductive ring and an aluminum ring embedded on the conductive ring. According to the bus connector provided by the invention, through the shield covers, which are integrated on the bus connecting seats and are provided with the aluminum rings, the bus connector and the gas tank mounting plates are quickly installed and matched without a fixed insert, so that the mounting difficulty is simplified; furthermore, one shield cover is added in each bus connecting seat, the application of a special bus connector is omitted through the sealing gaskets, and a centralized region of an electric field of a bus of an aeration cabinet is shielded by the shield covers, so that the electrical property of the aeration cabinet is improved, the bus connector is safe, convenient and reliable, and the cost loss for bus connection is greatly reduced.

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.

An air source heat pump water heater comprises a solar energy collector, a heat pump circulating pump, a water supply pump, a water feeding electromagnetic valve, a solar energy circulating pump, a water tank temperature sensor, a panel and a heat pump controller. The air source heat pump water heater is characterized by also comprising a collector temperature sensor; the collector temperature sensor and the water tank temperature sensor are connected with the heat pump controller and temperature signals are input into the heat pump controller; the heat pump circulating pump, the water supply pump, a water return electromagnetic valve and the water feeding electromagnetic valve which are connected with the heat pump controller are controlled by the heat pump controller to switch on and switch off; the heat pump controller intelligently judges whether to start the solar energy collector or a heat pump to heat water according to the temperature difference of the solar energy collector and a water tank. According to the technical scheme of the air source heat pump water heater, solar energy and the heat pump water heater can be simultaneously controlled based on the original heat pump controller without an additional controller and accordingly the installation is simple and convenient and the cost is saved.

The invention provides a telescopic arm device which comprises a fixed part, wherein a first direct moving part is slidably connected with the fixed part; a second direct moving part is slidably connected with the first direct moving part; a first driving part and a second driving part are connected with the fixed part; the first driving part is connected with a first toothed belt fixedly arranged at the first direct moving part and is capable of driving the first direct moving part to slide by virtue of the first toothed belt; the second driving part is connected with a driving belt toothed belt movably arranged at the first direct driving part; the driving belt toothed belt is meshed with a second toothed belt fixedly arranged at the second direct moving part and is capable of driving the second direct moving part to slide. According to the telescopic arm device provided by the invention, a multilevel telescopic structure is achieved by virtue of the first direct moving part and the second direct moving part in combination with the first and second driving parts which are fixedly arranged, so that a relatively long telescopic distance can be achieved with a relatively short length; By virtue of adopting a toothed belt driving mode, the structure is simplified and production and processing are convenient.

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 discloses a supporting protection device for a permanent magnet synchronous motor. The supporting protection device comprises a protective cover and an auxiliary rack, wherein the protective cover comprises a basic shell and blocking rings; the basic shell comprises a left end ring, middle rings and a right end ring; the middle rings are uniformly arranged between the left end ring and the right end ring; and the blocking rings are arranged on the middle rings and the right end ring in a sleeving manner. The mounting method comprises the following steps: 1), mounting the protective cover; 2), mounting a support base; 3), mounting the auxiliary rack; and 4), mounting the supporting protection device and the permanent magnet synchronous motor. According to the supporting protection device disclosed by the invention, blocking protection of the permanent magnet synchronous motor can be realized, and indirect mounting positioning between the permanent magnet synchronous motorand the equipment is also realized, so that mechanical vibration and noise of the permanent magnet synchronous motor in practical use can be effectively reduced, and meanwhile, a mode of the protective cover of the supporting protection device can be changed according to different use environments and places of the permanent magnet synchronous motor, and thus, the permanent magnet synchronous motor can be applied to multiple different using environments.

The invention discloses automatic processing equipment for a hot runner mold. The automatic processing equipment comprises a first table body and a second table body. The first table body is providedwith a through cavity. A feeding inlet is formed in the top of the first table body, and a discharging outlet is formed in the bottom of the first table body. The feeding inlet and the discharging outlet are formed in the two sides of the first table body separately. A first fixing assembly and a first polishing assembly are arranged on the side wall of the first table body. The second table bodyis provided with a first equipment cavity, and a hydraulic cylinder is arranged in the first equipment cavity. A piston rod of the hydraulic cylinder is connected with a first push rod in a rotating mode. A second fixing assembly and a second polishing assembly are arranged on the first push rod. A drive motor matched with the first push rod is arranged on the second table body. Under the matchingeffect of the first fixing assembly, the second fixing assembly, the first polishing assembly and the second polishing assembly, the surface and inner wall of a blank can be processed on the same equipment conveniently, equipment cost for blank processing is reduced and processing efficiency of the blank is improved.

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 discloses a heat preservation sun-shading roof and an installing method thereof. The heat preservation sun-shading roof comprises a main beam, an auxiliary beam, detachable supporting frames, heat preservation plates and a sun-shading plate, wherein the main beam is lapped on a roofing structure, the auxiliary beam is lapped on the main beam, and the main beam and the auxiliary beamare staggered to form an installing frame; the detachable supporting frames are installed below the auxiliary beam, and a supporting plane is formed by the upper ends of the multiple detachable supporting frames and used for providing plane support for the installing frame; the heat preservation plates are arranged in the installing frame and located on the supporting plane; and the sun-shading plate is pasted to the heat preservation plates and fixedly connected with the installing frame correspondingly. According to the heat preservation sun-shading roof and the installing method thereof, byadditionally arranging the detachable supporting frames, the installing direction of the heat preservation plates in the heat preservation sun-shading roof is changed from a conventional direction from bottom to top into the direction from top to bottom, the installing difficulty of the heat preservation sun-shading roof is simplified, the installing efficiency of the heat preservation sun-shading roof structure is greatly improved, operation is easy, manpower and material resources are saved, and the cost is saved.

The invention provides an oily fume removal and air conditioning integrated machine which comprises a kitchen ventilator assembly and an air conditioner assembly. The air conditioner assembly comprises an air conditioner outdoor unit assembly which is provided with a kitchen ventilator shell, and the air conditioner outdoor unit assembly is arranged on the kitchen ventilator shell. According to the oily fume removal and air conditioning integrated machine, the structure is compact, the installation space is saved, the requirements for oily fume removal and air conditioning in the kitchen environment can be met, and kitchen comfort and kitchen air quality are improved.

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.