180results about How to "Solve layout problems" patented technology

The invention discloses an underground catalytic gasification technique for coal and is divided into the following steps: (1) an injection well consists of two vertical shafts arranged in interval and a communication passage which is located in the coal bed and communicates the two vertical shafts is arranged; (2) the two sides of the communication passage are respectively provided with an auxiliary well from ground to the coal bed with a certain distance from the communication well; (3) effective components of the catalyst and the carrier materials are mixed into catalyst grains with the grain diameter matching with the coal cracks; (4) the catalyst grains are evenly distributed to the coal cracks through high-pressure fluid; (5) the two vertical shafts in the injection well are respectively converted into a gas intake well and a gas outtake well and then the underground gasification production of coal is carried out by the prior art. By adopting the special catalyst grains and corresponding catalyst grain supply method, the invention solves the problem of the distribution of catalyst in the coal bed and realizes underground catalytic gasification of coal.

The invention provides a power coupling device used for a hybrid electric vehicle and the hybrid electric vehicle. The power coupling device used for the hybrid electric vehicle comprises a one-way clutch assembly, a brake unit, a lock-up clutch unit, a single-row planetary gear train and a shell. The single-row planetary gear train comprises a sun wheel, a planet wheel, a planet carrier and a gear ring. An engine rotation shaft of the hybrid electric vehicle is connected to the sun wheel. The one-way clutch assembly is connected to the sun wheel to prevent the sun wheel from rotating reversely. The brake unit is connected to the sun wheel in order to conduct brake control over the sun wheel. A motor of the hybrid electric vehicle is connected with the gear ring in a matched mode. The planet carrier is connected with a rotation shaft of a speed changer. The lock-up clutch unit is connected with the planet carrier and the gear ring. The power coupling device used for the hybrid electric vehicle controls a power transmission switch by innovatively arranging a clutch and a brake, innovates the arrangement structure of a piston of the clutch, greatly improves the utilization rate of energy, achieves multi-mode operation of the hybrid electric vehicle with a more compact structure, promotes the development of the hybrid electric vehicle, and has wide market prospects.

The invention relates to the technical field of water communication and transportation equipment manufacturing, and discloses an LNG (Liquefied Natural Gas) storage tank arrangement system and a gas supply arrangement system of a double-fuel power-propelled ship. The LNG storage tank arrangement system comprises an LNG storage tank arranged on the stern portion of the ship, an engine casing and a chimney inside the stern portion are arranged on the right side of a ship body, a smoke exhaust pipe inside the engine casing is arranged on the rear portion, a ventilation pipe is arranged on the right side, a stairway is arranged on the front portion of the smoke exhaust pipe, a free fall lifeboat is positioned on the back face of the chimney at the right side of the ship body, an accommodation is arranged in the front of the LNG storage tank and the chimney and integrally moves towards the stem portion, and a refrigeration house and a dry provision room move to the larboard from the starboard. An LNG supply pipe comprises a high-pressure pipeline and a low-pressure pipeline, a gas supply chamber and the LNG storage tank are of an integral structure, and the integral structure is positioned on an additional deck at the stern portion; LNG filling stations are respectively arranged on the larboard and the starboard of the accommodation. The LNG storage tank arrangement system and the gas supply arrangement system of the double-fuel power-propelled ship solve the arrangement problems of the LNG storage tank and the gas supply system on a bulk cargo ship, realizes the purpose that LNG is applied to the bulk cargo ship as fuel, and effectively reduces pollutants discharged by the ship.

The invention discloses a device for testing the torsion and the vibration of a rotor of a revolution vane minitype compressor and a test method. A brush type conducting ring is connected with an armature of the compressor through an installation pan; the armature of the compressor is in spline fit with the rotation shaft of the compressor; the armature and the rotation shaft are axially positioned by a press screw bolt with an axial through hole; the brush type conducting ring is respectively connected two sets of resistance type strain sheets through lead wires; the two sets of resistance type strain sheets are symmetrically bonded on the rotation shaft of the compressor at intervals of 180 degrees along the circumference of the rotation shaft to form in to a four-arm differential bridge to be taken as a sensor for the torsion and the vibration of the rotor of the induction compressor; the change characteristic of the shear force of the torsion and the vibration of the rotation shaft is computed and analyzed by measuring the strain change quantity of the resistance type strain sheets when the rotator rotates; an output linear relation between the strain change quantity of a voltage signal by loading excitation voltage; an outputted torsion and vibration voltage signal is amplified through the adjustment of a dynamic strain amplifier; and change data of the voltage signal is acquired, monitored and analyzed by a data acquisition processor, i.e. the data of the torsion and the vibration of the rotation shaft of the compressor can by obtained by a computer.

A gas-liquid mixing type engine exhaust after-treatment jet apparatus comprises a pulse pump, a mixing jet unit, a nozzle, an ejector, a controller and an air source. The mixing jet unit comprises an ejecting cavity, a gas cavity, a nozzle positioning hole communicated with the gas cavity, an air inlet channel, and a limiting hole. The pulse pump comprises a lead for receiving signals and a lead interface, a control signal sent from the controller is transmitted to the pulse pump via the lead to drive the pulse pump to work, and the pulse pump provides the nozzle with a jet flow source. The nozzle sprays liquid to the ejecting cavity, space of the ejecting cavity is arranged in the spraying direction of the liquid, the gas cavity is positioned near a vent of the nozzle, and pressure in the gas cavity is reduced due to the fact that the liquid is sprayed. The purpose of the present invention aims at providing an exhaust after-treatment system that is high in reliability, simple in structure, convenient in installation, replacement and maintenance, and low in cost.

The invention discloses a novel high magnetic suspension intelligent vehicle storage garage. Two or more layers of concentric annular parking spaces which can rotate are arranged on the upper surface of each layer of body structure, and wheels of the annular parking spaces rotate on annular rails. A lifting shaft is arranged in the circle center of the novel high magnetic suspension intelligent vehicle storage garage, a lifting device is arranged in the lifting shaft, an intelligent automatic moving vehicle is arranged on the lifting device, and each layer of parking spaces are provided with one rail for the intelligent automatic moving vehicle to walk. A photovoltaic generation system is arranged at the upper end of the lifting shaft, and magnetic suspension structures are arranged between the wheels of the annular parking spaces and the annular rails. The novel high magnetic suspension intelligent vehicle storage garage has the advantages that the photovoltaic generation system is adopted, environmental friendliness is achieved, a high magnetic suspension driving lifting structure is adopted for the intelligent automatic moving vehicle, the rails are used for providing electric power, and the problem of arrangement through air cylinder air ways is solved; the magnetic suspension structures are adopted between the rails of the annular parking spaces and the wheels, the rotation resistance is greatly reduced, electric power consumption is lowered, and the novel high magnetic suspension intelligent vehicle storage garage is suitable for solar power supply.

The invention discloses a scaffold wall body connecting piece and a method for building a buckling tubular steel scaffold, including the following steps: 1), arranging the scaffold wall body connecting piece according to the standard space of three-step-two-span or three-step-three-span of the building; 2)building a sweeping pole, a vertical pole, a transverse pole and a connecting pole; and 3)building fencing guardrails, bridgings, a scaffold board, a safety net until the whole scaffold body develops into an integral sealed balanced system. The wall body connecting piece is composed of a connecting piece reinforcing steel bar which stretches into the building wall body, a connecting piece steel pipe outside the building wall body, and a detachable fixing piece which connects the connecting piece reinforcing steel bar and the connecting piece steel pipe. The U-shaped segment or rectangular segment of the connecting piece steel pipe outside the building wall body extends into the connecting piece steel pipe. Adopting such arrangement, the scaffold wall body connecting piece ensures the integrity of the building wall body, improves the impermeability of the building wall body, enhances the strength of the building wall body, reduces construction noises and shortens construction period.

The invention provides a wireless sensor network. The wireless sensor network at least comprises an information integration equipment layer, an information processing equipment layer and a sensor layer, wherein various sensors of the sensor layer are used for collecting target signals; information processing equipment of the information processing equipment layer serves as superior equipment of corresponding sensors and is used for processing information uploaded by the sensors to facilitate uploading for another time and controlling the sensors; information integration equipment of the information integration equipment layer serves as superior equipment of the information processing equipment and is used for receiving information reported by the information processing equipment and carrying out integration processing on the information to form intelligence information. Preferably, the wireless sensor network further comprises relay equipment used for relaying and forwarding of information between different layers. Preferably, a broadband spread spectrum communication mode is adopted in a network physical layer; a dynamic and static hybrid MAC protocol is adopted in a network link layer according to the type of service. The wireless sensor network is suitable for large-scale layout outdoors, and has high robustness, survivability, anti-interference and a longer life cycle.

The invention discloses a radiator assembly for a hybrid electric bus. The radiator assembly comprises a motor and controller cooling radiator, an engine cooling radiator, a supercharging intercooler and a cooling fan, wherein the motor and controller cooling radiator and the engine cooling radiator are connected in the same row; the supercharging intercooler is arranged outside the motor and controller cooling radiator and the engine cooling radiator; the engine cooling radiator is close to a hot end of the supercharging intercooler; the motor and controller cooling radiator is close to a cold end of the supercharging intercooler; and the cooling fan is arranged inside the motor and controller cooling radiator and the engine cooling radiator. Since the circulating water passages of the two radiators are independent of each other, the cooling effects of an engine and a motor and controller cooling system are enhanced, and the work and the life of the radiator assembly are guaranteed; and thus, the problem of arrangement of the radiator assembly in an engine driving cabin of the hybrid electric bus is solved.

The invention provides a permanent magnet linear launch device, which comprises a launch platform device, permanent magnet linear motors and a support platform used for supporting the launch platform device and the permanent magnet linear motors. Primary stages of the permanent magnet linear motors are arranged on the support platform; secondary stages of the permanent magnet linear motors are arranged on the launch platform device; a launch platform support plate used for supporting the launch platform device is arranged on the support platform, and the launch platform device can move relative to the launch platform support plate in the length direction of the launch platform support plate; two permanent magnet linear motors are arranged, i.e. a first permanent magnet linear motor and a second permanent magnet linear motor; the primary stage of the first permanent magnet linear motor and the primary stage of the second permanent magnet linear motor are arranged on both sides of the support platform symmetrically; the secondary stage of the first permanent magnet linear motor and the secondary stage of the second permanent magnet linear motor are arranged on both sides of the launch platform device symmetrically. The longitudinal space for launching is saved, and the efficiency of the permanent magnet linear launch device, and the stability and safety in the launching process are improved.

The invention discloses a pit opening type rainfall precipitation construction method in ultra-deep pits. The method comprises the following steps: step one, carrying out geological exploration of foundation pits, wherein the step one comprises a substep (a) of combining data of scales and places of proposed building according to the exploration technical requirements provided by design companiesand general plane graphs of buildings provided by construction companies, and combining soil drilling and extracting test with multiple field in-situ tests for comprehensively operating, wherein multiple field in-situ tests comprise static sounding, standard penetration test, heavy dynamic sounding and wave velocity and ground pulsation. The pit opening type rainfall precipitation construction method in ultra-deep pits is capable of ensuring that the foundation pits are safely digged and simultaneously reducing the underground water drawing and discharging amount to a maximum limit; the peripheral ground subsidence is also controlled in a minimum limit; the excellent rainfall precipitation effect is achieved; the idea of overall rainfall precipitation of the foundation pits is innovative;the construction processes related to the pit opening type rainfall precipitation construction method are conventional processes; the pit opening type rainfall precipitation construction method is mature in technology, simple in processes and easy to construct; the quality is easy to control; the cost can be greatly reduced.

The invention discloses a laying method for the ground surface settlement monitoring point on the basis of three-dimensional laser scanning, and belongs to the technical field of ground surface settlement monitoring. The characteristics of a polygon sampling point on any position in a Thiessen polygon is used for effectively dividing a mining area subsidence area into a plurality of Thiessen polygons; then, a ground surface settlement monitoring point is laid on the Thiessen polygon sampling point, and a monitoring route is planned according to a certain sequence from an outermost layer to inside; according to the planned route, a three-dimensional laser scanner is erected on the monitoring point; the point cloud data of the subsidence area is obtained in fixed time; and after ground surface settlement is stable, the ground surface settlement situation of the subsidence area is calculated. By use of the method, the subsidence area is effectively divided into a plurality of Thiessen polygons to guarantee that three-dimensional laser scanning data is evenly distributed, a blind area is avoided, the mining area ground surface extraction speed of three-dimensional laser scanning is effectively improved, later-stage point cloud data processing efficiency is improved, later-stage processing errors are reduced, and meanwhile, the problem of monitoring point laying after the subsidencearea is subjected to ponding along with coal layer mining is avoided.

The invention discloses a dynamic self-networking protocol system and method for the Internet of Things and industrial intelligence. A dynamic network is used to generate a tree protocol to carry out self-networking on the network, so that the whole network can implement networking rapidly under the movement condition, and the problems in sensor node arrangement and networking are solved. The quality of data paths is monitored at any time in the network, the communication quality of the paths in the network are compared, and thus, the transmission quality of the whole network is highest.

The invention provides an airfoil-shaped spring which comprises a connecting portion, airfoil-shaped elastic portions and clamping portions. The end portions of two connecting arms of the connecting portion extend outwards to form the airfoil-shaped elastic portions which are two symmetrical airfoil-shaped components. The end portions of the airfoil-shaped enatic portions extend towards the direction of a bending plate to form the clamping portions which are two parallel clamping arms. The clamping arms are parallel to the central axis of the bending plate. The invention further provides a wiring-harness fixing special-shaped clamp with the airfoil-shaped spring. The airfoil-shaped spring is ingenious in structure, reasonable in design, easy to dismount and capable of firmly clamping metal plates with different thicknesses while not damaging the metal plates and other components. With the wiring-harness fixing special-shaped clamp, arrangement of wiring harnesses at the edges of the metal plates is successfully realized.

The invention provides a method for evaluating vacuum plume effect on basis of mutual coupling of experiment and simulation and aims to quickly and accurately evaluating the vacuum plume effect in rocket engines. The method includes: performing simulation aided experimental design, to be specific, performing initial simulation to determine typical experimental conditions and key measurement parameters; confirming experimental effectiveness, to be specific, comparing experimental data of an experimental process with initial simulation results, and judging the effectiveness; confirming method effectiveness, to be specific, after confirming experimental effectiveness, subjecting a simulation method to verification and correction to allow sufficient precision; computing popularization of the simulation method, to be specific, subjecting all conditions of a plume effect task to be analyzed to simulation computation by the simulation method verified. The method has the advantages that various specific analytical problems about the engine vacuum plume effect can be studied and evaluated quickly, efficiently and accurately, reasonableness of experimental design can be effectively guaranteed, fewer experiment times are required, and experiment cost is lowered.

The invention discloses an air throttle and controller integrated unit, comprising an air throttle body; the air throttle body is connected with a controller which is internally provided with a controller internal air current channel, the controller internal air current channel is in abutting joint with an air current channel at the side of the air throttle body and the joint is provided with a sealing element; the controller is integrated with an intake pressure sensor, an intake temperature sensor and an electronic circuit board. The air throttle and controller integrated unit has the advantage that: the invention can provide the structure with completely common use and low cost switch for transforming a carburetor of a small-scale engine into an electronic fuel injection system. Meanwhile, with the air throttle and controller integrated unit, wiring harness connection among electrical components can be simplified, thus reducing the cost of the system and improving reliability, maintainability and installing flexibility of the system; furthermore, the main problem of heat load in the air throttle and controller integrated unit is fully taken into account, and the heat load of the electrical components can be greatly reduced by adopting the structures of reducing the contact area with a heat source, keeping away from the heat source, improving the heat dissipation performance of the electrical components, and so on.

The invention relates to a wireless charge-based wireless vibration monitoring device of a dry type transformer. The wireless charge-based wireless vibration monitoring device comprises an acceleration vibration sensor, a charge controlling and protecting circuit, a rechargeable lithium battery, an electric energy receiving device, a micro-processor unit and a wireless data sending unit, wherein the electric energy receiving device comprises a receiving coil, a rectification filter module and a voltage stabilization module. The wireless charge-based wireless vibration monitoring device uses a wireless charge mode to charge the rechargeable lithium battery, and the vibration sensing device does not need to connect with a power line so that the power supply problem for the power transformer monitoring device is solved; the wireless charge-based wireless vibration monitoring device uses the wireless data sending unit to send the gathered transformer vibration information to the receiving device so that the data line arrangement problem of a high-voltage field is avoided; the wireless charge-based wireless vibration monitoring device has advantages of convenience and flexibility in mounting.

The invention relates to a support integrated with an installation seat of a fuel pump of a gasoline engine. The support is installed at the rear end of an engine cylinder cover. Meanwhile, the support is further integrated with installation seats of a vacuum pump, a high-pressure fuel pump, a hot air water entering steel pipe, a throttle preheating water entering steel pipe, a water temperature sensor and a cam shaft phase sensor. A cavity I, a cavity II, a cavity III and a cavity IV are formed by extending from the surface of the support to a surface. The cavity II and the cavity III are connected. The cavity III is arranged between the cavity II and the installation seat of the high-pressure fuel pump.

The invention discloses a communication base station charging pile integration device which comprises a communication tower body. A communication single-pipe tower is adopted as the communication tower body. A plurality of wall-mounted charging piles are mounted on the communication tower body. Each wall-mounted charging pile comprises a charging pile shell and a charging pile system arranged inside the charging pile shell. Each charging pile system comprises a processor, a concentrator, a battery management unit, a charging management service platform and an electric energy measuring chip, wherein the processor is in data communication with the concentrator through a CAN bus; the concentrator is in data communication with the charging management service platform through a wired internet or a wireless GPRS network; and the battery management unit is in data communication with the processor through a CAN bus. By adoption of the communication base station charging pile integration device, arrangement of the charging piles of the single-pipe tower with a small tower diameter is achieved, the integration degree of the charging pile systems is high, and the user experience degree can be effectively increased.

The invention relates to a separated-combined type oil tank, which is characterized in that one side of the oil tank is provided with a fuel oil tank body, the middle of the oil tank is wielded with a urea reducing agent tank body, while the other side thereof is fixed with an electrically control tank; the volume capacity relation of the fuel oil tank body and the urea reducing agent tank body is as follows: L1 / L2=10-30, and the capacity L3 of the electrically control tank is 120-150mm; and one side of the electrically control tank is provided with a buckle of a seaming end cover. In the invention, on the basis of the traditional automobile oil tank, the urea reducing agent tank and a dosage control tank of a urea reducing agent are combined, thereby enabling one tank body to have three functions, thus the method of the invention realizes the compact design which is beneficial for the beautiful design of vehicles, reduces the mounting of connecting parts, simplifies the vehicle allocation, reduces the weight, meets the using requirement of the SRC standard higher than nation 4, and reduces the cost of the system.

The invention discloses a small high-precision gas proportioner. The gas mixing ratio is directly controlled by a gas proportional valve, the pressure of multiple paths of gas for proportioning can becomplementary by means of a pressure complementary type pressure stabilizer, and the gas enters the gas proportional valve with the pressure kept consistent. By means of the scheme, a flow testing mode is abandoned, the gas mixing ratio is directly controlled, the concentration precision of mixed gas is improved, and the defects of the prior art are effectively overcome; in addition, an integration module structure is adopted in the scheme, all the components form a system through integration modules, no pipelines are designed, and the problem that the layout and leakage maintenance of pipelines are not convenient is solved effectively.

The invention relates to a lubrication system oil way structure of a vertical type high speed case. The lubrication system oil way structure is mainly composed of a case body, a case cover, oil injection pipes, an oil inlet, bolts, an oil distributor, a steel tube, a plug and a tube connector; the case body and the case cover are connected to form a gear case front-and-back separating case structure with a high speed bearing block hole in the upper portion and a low speed bearing block hole in the lower portion, the oil injection pipes are fixed to the case cover through the bolts and are located on the case body and the case cover at the same time, the oil distributor is installed inside the case body through the bolt and communicates with the oil inlet, and the oil distributor and an oilway inside the case body are communicated through the steel tube and the tube connector; the oil injection pipes comprise a first oil injection pipe and a second oil injection pipe, and the first oilinjection pipe and the second oil injection pipe are each provided with a plurality of oil injection small holes used for lubricating and cooling gears for meshing; and an oil return cavity is arranged on the lower face of a low speed bearing block, communicates with an oil injection hole of an oil pump shaft component, and is used for lubricating an oil pumping component. The lubrication systemoil way structure solves the problem about layout of the lubrication system oil way of the vertical type high speed gear case.

The invention discloses a dual-fuel power ship which comprises an air supply chamber, a fuel tank room, isolation chambers, blocking areas and an engine room, wherein an LNG (liquefied natural gas) tank and a control main valve room are arranged in the fuel tank room; the control main valve room is arranged at the top of the LNG tank; an engine room generator room and a boiler room are arranged onone side of the fuel tank room; the engine room generator room and the boiler room are connected with the engine room; the air supply chamber is arranged on the other side of the fuel tank room; isolation chambers are arranged between the air supply chamber and the engine room, and between the air supply chamber and a cargo hold respectively; and blocking areas are arranged between the air supplychamber and the fuel tank room, and between the air supply chamber and the engine room respectively. A ventilation tower is positioned on a main deck and is mainly used for arranging a gas ventilation pipe and a double-layer pipe outer pipe ventilation pipe. The dual-fuel power ship provided by the invention completely meets the specification requirements of the international maritime organization, well solves the arrangement problem of a dual-fuel power automobile Ro-Ro ship on the ship, and realizes the application onto the automobile Ro-Ro ship.

The invention discloses a cutter change mechanism for an elevated gantry machining center. The cutter change mechanism comprises a moving device (1), and an ATC manipulator (2) arranged on the movingdevice (1); the moving device (1) comprises a frame (11) and a lead screw (12); one end of the lead screw (12) is connected with an output shaft of a servo motor (13); two guide rails (14), parallel to the lead screw (12), are arranged on two sides of the lead screw (12); linear slide blocks (15) are arranged on the guide rails (14); a worktable (16) is arranged on the linear slide blocks (15); the lower end of the worktable (16) is connected with the lead screw (12); and the ATC manipulator (2) comprises a rotating device (21), a hoisting device (22) and a manipulator (23) arranged on the worktable (16). Through ordered numerical control and mechanical operation, high efficiency and accuracy of the machining center are greatly improved, the position arrangement problem and the protectionarrangement problem of a cutter magazine are solved, and the workpiece loading and unloading problems in interference of machining of a machine tool are solved.

The invention relates to the technical field of high-speed railway tunnels, in particular to a high-speed railway tunnel reinforcing section stress monitoring device including new tunnel lining, the new tunnel lining is attached to the original tunnel lining. The original tunnel lining comprises an original primary support and an original secondary lining; the novel tunnel lining comprises a steelarch frame and a lining layer, nine groups of uniformly distributed stress monitoring sensors are arranged on the new tunnel lining; each group of stress monitoring sensors comprises two section concrete strain gauges and a section mixed steel bar stress gauge. According to the high-speed railway tunnel reinforcing section state evaluation method, the problems of sensor types and sensor arrangement schemes for monitoring the stress state of a high-speed railway tunnel reinforcing lining are solved, and the high-speed railway tunnel reinforcing section state evaluation method is provided. Themethod plays an important role in monitoring the stress of the tunnel reinforcing section, evaluating the stress state of the tunnel and guaranteeing the operation safety of the high-speed railway tunnel.

The invention relates to a combined type fuel tank with three tanks; the combined type fuel tank comprises a precise filter, a precise gas electromagnetic valve, a precise pressure maintaining valve, a control unit, a precise liquid electromagnetic valve, a pre-pumping and post-pumping urea reducing agent tube, a urea reducing agent tank body, a metallic support, a urea reducing agent tank cover, a fuel tank cover, a urea reducing agent liquid level sensor, a fuel tank body, a urea reducing agent tap valve, a fuel tap valve, a combined casing pipe getting into and getting out of an electric control cabinet, a urea reducing agent dosage pipe, a power source lead wire, a compressed air input pipe, a compressed air output pipe, a temperature feedback signal wire from a catalytic converter, a nitric oxide feedback signal wire from the catalytic converter, a urea reducing agent liquid level alarm signal wire input into a cab, a miniature liquid pump, a natural vent opening, a tank body connecting soldering point, a seaming end cover pinch board and an electric control cabinet; the combined type fuel tank is characterized in that the fuel tank body is arranged at one side of the fuel tank, the urea reducing agent tank body is arranged at the upper part of the other side of the fuel tank, and the electric control cabinet is arranged at the lower part of the other side of the fuel tank; a volume capacity relationship between the fuel tank body and the reducing agent tank body is L1 / L2=5-15, the volume relationship between the reducing agent tank body and the electric control cabinet is h3 / h2=1; and the seaming end cover pinch board is arranged at one side of the electric control cabinet. The combined type fuel tank has the advantages that the compactness design is realized, the beautiful design of vehicles is facilitated, the installation of connecting members is reduced, the vehicle configuration is simplified, the weight is reduced, the standard requirement of SCR (Selective Catalytic Reduction) adopting by National IV and the above is satisfied and the cost of systems is also reduced.

The invention provides a break-of-gauge beam for large and long foundation pits and a construction method thereof. The break-of-gauge beam comprises a matrix and steel sleepers for mounting gantry crane rails, wherein, the steel sleepers are fixed at the upper part of the matrix; and the matrix is formed by connecting a plurality of Bailey pieces via hinge pins. The construction method comprises the following steps: a. forming the matrix of the break-of-gauge beam by connecting a plurality of Bailey pieces via the hinge pins, and fixing two ends of the matrix into a concrete foundation provided with a U-shaped groove; b. mounting more than one supporting block below the middle part of the matrix, arranging a tray at the top of the supporting block and mounting steel plates between the tray and the matrix; and c. laying the steel sleeper for mounting the gantry crane rails at the upper part of the matrix to complete the construction of the break-of-gauge beam. The break-of-gauge beam for large and long foundation pits in the invention has the advantages of simple and compact structure, low cost, convenient construction, widely applicable range and high reliability.

The invention discloses a cable intermediate joint insulator aging diagnosis method, system and device. The method comprises the following steps: carrying out ultrasonic detection on a cable intermediate joint insulator; carrying out spectral analysis on an ultrasonic wave reflected by the cable intermediate joint insulator to obtain an ultrasonic wave velocity V and an aging degree parameter pad;and determining the aging degree of the cable intermediate joint insulator through the ultrasonic wave velocity V and the aging degree parameter pad. According to the embodiment of the invention, thereal-time monitoring of the insulation aging state of the cable intermediate joint is realized through a built-in ultrasonic probe with the transceiving function; compared with existing online monitoring modes for the temperature and partial discharge, the disclosed method enables the real-time performance of the insulating material to be represented well; the defect that in the prior art, the intrinsic performance of the insulating material in the intermediate joint of the cable joint cannot be directly represented is overcome; and the method has guiding significance in practical application.

The invention discloses a vehicle system with a low-voltage EGR (Exhaust Gas Recirculation) loop, and belongs to the technical field of engine exhaust gas recirculation. The vehicle system comprises an engine, wherein an intake manifold and an exhaust gas manifold are connected to the engine, and the engine is connected with a compressor through the intake manifold and is connected with a turbinethrough the exhaust gas manifold. The low-voltage EGR loop is used for collecting exhaust gas from the vortex of the turbine and treating the exhaust gas so as to obtain recombustion gas, and the recombustion gas is conveyed to the compressor by the low-voltage EGR loop and is conveyed to the engine by the compressor for recombustion. The vehicle system with the low-voltage EGR loop has the beneficial effects that gas is collected from the turbine and does not pass through an aftertreatment system, so that the pipeline layout problem caused by collection of gas from the turbine and the passingof the aftertreatment system is avoided, and additionally, the problems of exhaust energy reduction caused by flowing of exhaust gas through a DPF and economic deterioration caused by installation ofa counterbalance valve are avoided.

The invention discloses a numerical simulation method of heat exchange between an environment and an air conditioner unit outdoor machine. The method comprises the steps that firstly an outdoor machine three-dimensional model is built according to an installation design scheme of the air conditioner unit outdoor machine, then the outdoor machine three-dimensional model is solved, and finally the optimum installation position of the air conditioner unit outdoor machine is determined according to calculation results. According to the numerical simulation method, a CFD simulation software is adopted, a mode that figures, cartoons and detailed digits are combined is used for expressing actual results, and the method is more persuasive; due to the fact that the modeling period is short, the modeling process is easy and convenient, a large amount of time is saved, software simulation is close to the temperature air flow distribution in actual conditions, and the method has high reliability; through software simulation, the method assists and is matched with a data center air conditioner design to the utmost extent, application effects are expected, and a reasonable and scientific solution is provided.