69results about How to "Long design life" patented technology

The utility model relates to an abandon-anode-protection method in the technical field of anti-corrosion for metals in reinforced concrete structures in marine environment, in particular to an abandon-anode-protection method for reinforced concrete in an area with tide difference and wave splashing. The main structure includes a terminal box, an extended anode, an electric connecting wire, a composite sheath, a metallic fastener, a sheath-connecting slot, an under-water abandon anode, a reinforced concrete bridge pier, rebars, fixing parts, extended-anode connector, electrically conductive cement mortar filler, conductive connectors and under-water fixers. The rebars in the concrete are fixedly connected with the conductive connectors at one end of the abandon anode; the electrically conductive cement mortar filler fixes the extended anode on the surface to be protected; the under-water abandon anode is fixed by steel strip or angle steel, and is electrically connected with the rebars in the concrete. The abandon-anode-protection method for reinforced concrete in an area with tide difference and wave splashing is characterized by no maintenance, easy installation, is helpful for after-stage replacing and re-protection, and will not influence the service life or operation of the reinforced concrete structures.

The invention discloses a vehicle-mounted combined battery intelligent power supply system and a power supply method. The combined battery, such as a double-battery parallel power supply device (12),a double-battery series power supply device (17) or a multi-battery series-parallel power supply device (21), is used for upgrading the traditional automobile storage battery; the intelligent power supply method, namely, the control unit (8), controls each of the battery switches in accordance with an engine state, such as shut down, start up and operation, and each battery voltage, to provide therequired electric power, the main contents include: providing a power supply similar to the conventional storage battery when the engine is stopped, and the battery leakage protection is provided asneeded; providing a higher starting voltage than a conventional storage battery to shorten the starting time when the engine is started; when the engine is in operation, a supplementary supply voltagewhich is not lower than a certain preset voltage is provided, so that the phenomenon of insufficient power supply influencing the stable operation of the engine won't occur in the electric appliancesystem.

The invention provides a maximum power tracking system and a maximum power tracking method of a power transmission line induction power supply source. The method comprises the following steps of: detecting output voltage of a power supply coil and rectifying and amplifying the output voltage to obtain first output voltage; detecting output voltage of a measuring coil and performing rectification, amplification and phase-shift processing on the output voltage to obtain a reference voltage; outputting a drive control signal according to a comparison result of the two voltages; and switching on or off a switch tube by using the drive control signal to correspondingly select a battery or the power supply coil for supplying power for a load. By using the system and the method, the output voltage of the power supply coil can be adjusted by changing the duty ratio size of a gate drive signal of the switch tube to track the reference voltage all the time, thereby dynamically adjusting the output power of the power supply coil. In addition, when the power supply source and a backup battery are used for simultaneously supplying power, the time for supplying power for the load by the battery can be shortened to the greatest extent since the power supply coil works at the maximum power point for the most of time, so that the design life of the entire power supply source is prolonged.

The invention discloses a durable tunnel paving structure, which sequentially comprises a rubber asphalt gravel sealing layer, a pouring-type semi-flexible mixture paving lower layer, a modified emulsified asphalt bonding layer and a high-modulus warm mixing flame-retardant asphalt mixture paving upper layer from bottom to top. The durable tunnel paving structure provided by the invention has the advantages that the anti-track capability and anti-crack performance of the pavement are obviously enhanced; the durability is greatly improved; the anti-slip function of the paving surface is ensured; the problem of potential fire safety hazards of asphalt pavement is solved; the asphalt pavement construction temperature is lowered; energy sources are saved; emission is reduced; the construction simplicity is improved; only the surface maintenance and repair are needed in daily life; the integral repeated repair is avoided; and the investment is reduced in the whole life cycle.

A masonry wall is formed of masonry block units abutted with one another in series within stacked rows. Each masonry block unit is a concrete body having two opposing exterior side walls defining respective portions of the assembly masonry wall. Vertical reinforcement channels are formed in the exterior side walls of each masonry block unit so as to be open laterally to the exterior. The reinforcement channels align with corresponding channels in the masonry block units in adjacent stacked rows to receive elongate reinforcement members, for example rebar, inserted laterally therein from the exterior surface of the assembly masonry wall. A bonding material can then be recessed laterally into the reinforcement channels so as to bond the reinforcement members to the masonry assembly.

Diagnostic and response systems and methods for a fluid power system acquire data from pressure and temperature sensors disposed in the fluid power system, analyze the data in a failure algorithm to build a history of cumulative damage to hoses in the fluid power system, communicates an indication of potential imminent hose failure to a central location when a level of the cumulative damage indicates imminent failure of a hose, analyze the information at the central location to determine an appropriate response, and transmit information about the fluid power system, including location, and identification of the hose about to fail to a response unit. The response unit responds to the location and replaces the component prior to failure, or the communication might include information that the hose has failed, such that the response unit replaces the failed hose to return the fluid power system to normal operation.

The invention discloses a hot spraying rare earth aluminum alloy coating steel bar. A hot spraying manner is adopted, and the hot spraying rare earth aluminum alloy coating steel bar is prepared by spraying a rare earth aluminum alloy wire to the surface of a steel bar base body through mechanical rust removal, hot spraying, after treatment and other steps, wherein Si, Li, Ti, B, Mn, rare earth metal and the like can improve hardness, plasticity, tenacity, shielding performance and cathode protection capability of an aluminum alloy and a clad layer. A double-component waterborne polyurethane sealing agent and a finishing coat are adopted for treatment, cleanliness and environment friendliness are achieved, surface drying is rapid, and compatible bonding with concrete is easier due to the surface of the hot spraying rare earth aluminum alloy coating steel bar. According to the hot spraying rare earth aluminum alloy coating steel bar, the common technical problems that according to a current epoxy coating steel bar and a zinc-aluminum clad layer steel bar, the relative bonding strength with concrete is greatly reduced, the steel bar anchoring length is increased by 25%, anti-corrosion durability is insufficient, and notch and damaged positions are hard to repair on the site are solved, and good application prospects are achieved.

The invention discloses an agricultural drought monitoring system based on a remote sensing image and a convolutional neural network. The system comprises a remote sensing image acquisition module, animage preprocessing module, an image storage module, an image feature extraction and classification module, a drought information analysis and processing module, a drought information display moduleand an information query and push module, which are are respectively responsible for high-resolution remote sensing image acquisition, remote sensing image preprocessing, remote sensing image storage,image feature extraction and classification, information analysis and processing, drought information visual display, and information query and pushing. According to the system, the convolutional neural network is adopted, the change problems of translation, rotation, scale zooming and other forms can be solved, and feature extraction is performed on the high-resolution satellite remote sensing image by using the powerful feature extraction capability of the convolutional neural network. The functions of drought information query, drought grading, drought information visual display, drought condition monitoring and prediction and the like can be achieved, and the requirement for agricultural drought monitoring under the current remote sensing image data growth background is met.

The invention discloses a compact bogie with built-in axle boxes for high-cold subway vehicles and belongs to the field of bogie devices for railway vehicles. The compact bogie with the built-in axleboxes for high-cold subway vehicles comprises two drive devices, two brake devices, two wheel set devices, a compact casting structure, a compact secondary suspension system and two wheel set built-inaxle box devices, wherein each wheel set device comprises an axle and wheels arranged at two ends of the axle symmetrically, each drive device comprises a traction motor and a gearbox, and each brakedevice comprises two wheel set brakes. The compact bogie with the built-in axle boxes for high-cold subway vehicles has the advantages that a bogie fixed wheel base is reduced substantially while structural strength is ensured, and yaw angle stiffness of wheel sets and distorsion stiffness of the bogie are both reduced effectively, so that a rotation radius of the bogie is decreased, the curve passage capacity thereof is improved to meet the anti-collision requirements of horizontal damping and curve bends completely, and the space occupied by a retainer of a previous horizontal buffer is saved; by the aid of a snow plow device and three-rail ice-snow scraper devices, the compact bogie is applicable to high-latitude extremely-cold regions.

The invention relates to a machining method of a large thin-wall bearing ring. The machining method comprises the steps that 1, pretreatment is carried out, wherein a bearing ring rough body is heated to 180-220 DEG C and kept at the temperature for 10-14 h; 2, the ring is subjected to heat treatment; 3, low-temperature cooling treatment is carried out, wherein the temperature is decreased to -65--75 DEG C and kept for 1.5-2.5 h; 4, rough grinding machining is carried out; 5, primary additional tempering is carried out, wherein the roughly-ground product is heated to 140-160 DEG C and kept at the temperature for 22-24 h; 6, semi-accurate machining is carried out; 7, secondary additional tempering is carried out, wherein the semi-accurate ground product is heated to 140-160 DEG C and kept at the temperature for 22-24 h; and 8, final grinding machining is carried out. By means of the machining method, the factors that before heat treatment, machining stress deformation is caused, quenching stress is too large, and stress cannot be completely released through one-time tempering are eliminated, the problem that large thin-wall bearing parts are large in heat treatment deformation is relieved, bearing size stability is improved, machining stress is sufficiently released, machining precision is improved, and therefore the surface quality and rotating precision of a bearing are improved.

The invention discloses a compact type bogie with internally-arranged axle boxes for a subway vehicle and belongs to the field of bogies for subway vehicles. The compact type bogie comprises two driving devices, two braking devices, two wheel pair devices, a compact type cast framework, a compact type secondary suspension system and two wheel pair internally-arranged type axle box devices. The wheel pair devices comprise axles and wheels symmetrically arranged at the two ends of the axles, the driving devices comprise traction motors and gear boxes, and each braking device comprises two wheelpair brakes. The fixed axle distance of the bogie is reduced substantially while structural strength is guaranteed, the yaw angle rigidity of wheel pairs and the warping rigidity of the bogie are reduced effectively, accordingly the gyration radius of the bogie is decreased, the small-radius curve passing capacity of the bogie is improved, the transverse damping requirement and the anti-collisionrequirement on a curve bend can be met completely, and the occupied space of an original transverse buffer stopping seat is saved.

The invention belongs to the field of anticorrosion and antifouling, and relates to a device and a method for measuring the breakage rate of a coating inner wall of a pipeline, and is combined with acathode protection system for an impressed current. The device comprises a flange plate (1), an electrode probe (2), a flange base (3) welded on the pipeline, and a potentiostat (8). The flange plate(1), which carries the electrode probe (2), is connected and sealed to the flange base (3) through bolts. The electrode probe (2) is intended to obtain a current signal flowing through the device. Thecurrent is combined with the output current of the cathode protection system of the pipeline, so that the coating breakage rate of the inner wall of the pipeline can be calculated. According to the device and the method for measuring the breakage rate of the inner wall coating of the pipeline, the device can monitor online and measure the breakage condition of the coating on the inner wall of thepipeline where a cathode protection and anticorrosive system has been installed; and can measure the breakage rate of the inner and surface coating. The device is easy to install, does not need to replace, and can monitor online. The method is simple, and the calculation result is better matched with the actual situation.

The invention discloses a paving method of a durable tunnel pavement. The paving method comprises the following steps: (1) carrying out sand blasting treatment on a cement concrete plate, spreading rubber asphalt and gravel on the surface of the cement concrete plate, and grinding to form a rubber asphalt and gravel seal coating; (2) grinding to form an asphalt mixture substrate on the rubber asphalt and gravel seal coating, pouring cement-based mortar, and naturally curing to form a poured semi-flexible paving lower layer; (3) spreading modified emulsified asphalt so as to form a modified emulsified asphalt layer; and (4) paving a fine-grain type asphalt mixture or a medium-grain type asphalt mixture to form a high-modulus warm mixing inflaming-retarding asphalt mixture paving upper layer. According to the invention, the paving method is strong in universality and simple in construction process, adopts a relatively conventional material, is strong in operability, and has good construction peaceability; with the whole paving structure, design service life can be obviously prolonged and can achieve 20-30 years, and good fireproofing, skid resistance, safety, as well as energy conservation and environment protection effects are achieved.

The invention discloses a windshield wiper system and a vehicle with the windshield wiper system. The windshield wiper system comprises at least one wiper blade, a wiper driving unit, a water amount sensor and a control unit; the wiper blades are used for wiping a windshield of the vehicle; the wiper driving unit is connected with the wiper blades and used for providing driving force for the wiperblades; the water amount sensor is used for detecting the amount of water on the windshield; the control unit is connected with the wiper driving unit and the water amount sensor, wherein under the conditions that the control unit receives a wiping instruction representing that a vehicle user intends to wipe the windshield for the first time within a predetermined period and the amount, detectedby the water amount sensor, of the water on the windshield is lower than a threshold value, the control unit is configured not to activate the wiper driving unit.

A transition duct system (100) for routing a gas flow from a combustor (102) to the first stage (104) of a turbine section (106) in a combustion turbine engine (108), wherein the transition duct system (100) includes one or more converging flow joint inserts (120) forming a trailing edge (122) at an intersection (124) between adjacent transition ducts (126, 128) is disclosed. The transition duct system (100) may include a transition duct (126, 128) having an internal passage (130) extending between an inlet (132, 184) to an outlet (134, 186) and may expel gases into the first stage turbine (104) with a tangential component. The converging flow joint insert (120) may be contained within a converging flow joint insert receiver (136) and disconnected from the transition duct bodies (126, 128) by which the converging flow joint insert (120) is positioned. Being disconnected eliminates stress formation within the converging flow joint insert (120), thereby enhancing the life of the insert. The converging flow joint insert (120) may be removable such that the insert (120) can be replaced once worn beyond design limits.

The invention discloses heat exchange equipment applying multi-layer heat exchange tubes. The heat exchange equipment at least comprises a tube bundle body, wherein a tube plate is arranged on the tube bundle body, and a plurality of multi-layer heat exchange tubes are penetrated in the tube plate; each multi-layer heat exchange tube at least comprises an outer tube, and the outer tube is internally provided with a medium channel; the medium channel is internally provided with a heat exchange part which divides the heat exchange channel into a direct heat exchange area exchanging heat with the outer tube and an indirect heat exchange area exchanging heat with the heat exchange part; and the heat exchange medium in the indirect heat exchange area exchanges heat energy with the heat exchange medium of the direct heat exchange area through the heat exchange part. In the invention, because the multi-layer heat exchange tubes are adopted, the heat exchange efficiency of the indirect heat exchange is greatly increased. The heat exchange equipment also has the advantages of low cost, convenience for manufacturing, and the like and is suitable for various industries such as petroleum, chemical engineering, chemical fertilizers, boilers, pharmacy, food, power, nuclear energy, environmental protection, heat supply, and the like.

The invention relates to a contact system of a circuit breaker. The contact system comprises a plurality of contact fingers, contact springs and a contact support, wherein two sides of the contact support are fixed by splints; isolation grating sheets are arranged on the contact support; the plurality of contact fingers are connected together by a shaft; two ends of the shaft are supported by holes in the two splints; the contact springs are arranged in gaps between the stomachs of the contact fingers and the isolation sheets; the contact system is characterized in that: more than one contact finger forms one group; and each group of contact fingers share a group of contact springs. By the contact system, the shorttime withstand current of the circuit breaker can be increased and the whole service life of the circuit breaker can be prolonged.

The invention provides a downhole intelligent monitoring system based on the Internet of Things. The downhole intelligent monitoring system comprises a display, a ground control module, a downhole control module, a ground communication module, a downhole communication module, a dust concentration sensor, a CO concentration sensor, a fan variable-frequency control mechanism and a spraying device. The downhole control module obtains downhole dust and CO concentration through the dust concentration sensor and the CO concentration sensor, and when the downhole dust and CO concentration exceed threshold values, the downhole control module starts the spraying device and the fan variable-frequency control mechanism to conduct dust removal, dust falling and ventilation operation. The downhole control module transmits dust and CO concentration information to the ground control module through the downhole communication module and the ground communication module, and the ground control module displays related data on the display. According to the invention, the full-automatic operation of reducing the concentration of dust and CO in the mine production operation is realized, the generation of dust and CO in the downhole production operation is inhibited from the source, the burden of workers is reduced, and the health of the workers is guaranteed.

The invention discloses a heat exchange pipe, which comprises an outer pipe at least. The interior of the outer pipe serves as a medium passage. A heat exchange element is configured inside the medium passage. The heat exchange element divides the medium passage into a direct heat exchange zone which exchange heat with the outer pipe and an indirect heat exchange zone which exchange heat with the heat exchange element. The heat exchange medium inside the indirect heat exchange zone exchanges heat with the heat exchange medium inside the direct heat exchange zone via the heat exchange element. In addition, the invention provides an on-line pipe-making processing technique of the pipe, which is adopted to overlap the outer pipe with the heat exchange element by means of an on-line welding technique. Because the heat exchange element is configured inside the outer pipe, the heat exchange area of the heat exchange pipe provided by the invention is increased, which greatly improves the heat exchange efficiency of the indirect heat exchange zone so that the heat exchange pipe provided by the invention is superior to the current heat exchange pipes in terms of the overall heat exchange efficiency. In addition, the invention has low cost and is convenient for manufacturing, and the heat exchange pipe provided by the invention can be applied to high-efficiency heat exchangers or heat exchanging equipment of multiple industries like petroleum, chemicals, fertilizer, boilers, pharmacy, foodstuff, electric power, nuclear power, environmental protection, heat supply and the like.

A dumper frame comprises a right longitudinal beam and a left longitudinal beam which are symmetrically arranged, and a bumper assembly, a front lower gantry beam, a second cross beam, a third cross beam, a middle rear cross beam assembly and a tail cross beam which are sequentially connected between the left longitudinal beam and the right longitudinal beam from front to back; the sizes of the box-shaped sections of the left longitudinal beam and the right longitudinal beam are kept unchanged from front to back; and at least one surface of the second cross beam, the third cross beam, the middle rear cross beam assembly and the tail cross beam overlaps the left longitudinal beam and the right longitudinal beam. According to the dumper frame, the torsional rigidity and strength are greatlyimproved, complex and changeable severe working conditions of a mine can be resisted, and the design service life is long. The invention further relates to a dump truck with the dump truck frame.

A transition duct system for routing a gas flow from a combustor to the first stage of a turbine section in a combustion turbine engine, wherein the transition duct system includes one or more converging flow joint inserts forming a trailing edge at an intersection between adjacent transition ducts is disclosed. The transition duct system may include a transition duct having an internal passage extending between an inlet to an outlet and may expel gases into the first stage turbine with a tangential component. The converging flow joint insert may be contained within a converging flow joint insert receiver and disconnected from the transition duct bodies by which the converging flow joint insert is positioned. Being disconnected eliminates stress formation within the converging flow joint insert, thereby enhancing the life of the insert. The converging flow joint insert may be removable such that the insert can be replaced once worn beyond design limits.