40results about How to "Easy to implement modular design" patented technology

The invention discloses an online high-purity hydrogen preparation system for a fuel cell. The online high-purity hydrogen preparation system comprises a methyl alcohol box as well as a raw material box and a catalytic burner which are connected with the methyl alcohol box through a methyl alcohol metering pump, wherein a fuel cell discharge water inlet is formed in the raw material box, an oxygen inlet is formed in the catalytic burner, an ethanol water metering pump and a heat exchanger are sequentially connected onto the raw material box, a vaporizer is connected onto the heat exchanger, a reforming reactor is connected onto the vaporizer, a palladium film purifier is connected onto the reforming reactor, and the palladium film purifier is connected with the catalytic burner; the invention further discloses a control method of the system. According to the system provided by the invention, online hydrogen supplying is performed through a manner of using a methanol water reforming reaction to produce hydrogen, the yield of pure hydrogen is controlled through adjusting the flow of an ethanol water mixture; the method has the characteristics of high hydrogen storage density, high hydrogen purity, low energy consumption, compact structure, simpleness and convenience in start-stop controlling, easiness in implementing modular design and the like.

The invention provides a cascade type time-interval variable-order multi-level static converter, which can be modularized; a previous-stage four-way isolation DC-DC (Direct-Current-Direct-Current) converter (1) is connected to a subsequent-stage four-unit cascade inverter (2); a novel time-interval variable-order multi-level control circuit (3) is connected between the previous stage and the subsequent stage; the converter is characterized in that the previous stage is adopted with four ways of mutually independent, staggered and parallel double-tube forward direct-current converters; the subsequent stage is a cascade structure composed of four single-phase H bridges; a carrier phase-shifting frequency-doubling SPWM (Sinusoidal Pulse Width Modulation) technology is adopted; the time-interval variable-order multi-level control circuit is connected between the previous stage and the subsequent stage; the previous stage of the static converter is beneficial to reducing input current ripple and reducing the volume of a filter; the subsequent stage is low in voltage stress of a power switch device, high in circuit modularization degree and low in loss; and, by means of the time-interval variable-order multi-level control circuit, on the premise of not increasing the number of independent sources of the previous stage, the more level number of output can be realized, and the THD (Total Harmonic Distortion) of the harmonic wave is low.

The invention provides a high voltage direct current circuit breaker topology circuit which comprises a main branch, a current transfer branch and an energy absorption branch. The main branch, the current transfer branch and the energy absorption branch are connected in parallel. According to the high voltage direct current circuit breaker topology circuit provided by the invention, the structure of a circuit topology is simple; a stable current zero crossing point is in a breaking process; and the high voltage direct current circuit breaker topology circuit has the advantages of convenient control, flexible application, easy realization, high current breaking capacity, high withstand voltage level, high expansibility and low equipment cost.

The invention relates to an electron accelerator which comprises a direct-current high-voltage power supply and a plurality of electro acceleration units. The electron accelerator is characterized in that the direct-current high-voltage power supply is connected with the electron acceleration units through a direct-current high-voltage insulation cable. One high-voltage power supply is provided with the electron acceleration units, thus the electron accelerator realizes the eduction of oversized beams of electron beams, is convenient for realization of modular design of the electron acceleration units, and has the advantages of being simple in maintaining failures, reducing overhaul time and operation time and improving production efficiency because the electron acceleration units can move freely relative to the high-voltage power supply and one electron acceleration unit can independently operate or the electron acceleration units can simultaneously operate.

The invention discloses an independent-winding double-side plate permanent magnet linear motor, which comprises primary sides, a secondary side and air gaps. Each primary side comprises an armature winding, a primary magnetic-conductive iron core and a permanent magnet array. The two primary side assemblies are arranged at the two sides of the secondary side respectively to form a double-side structure. The primary magnetic-conductive iron core forms a big open slot structure, and the permanent magnet array is arranged in the slot mouth. One side, opposite to the corresponding open slot, of each primary magnetic-conductive iron core is provided with the armature winding; and the armature windings of the two primary sides at the two sides of the secondary side are same-phase windings, but electrical angle difference is 180 degrees. The secondary side is formed by magnetic-conductive iron cores having a salient pole structure, and gaps. The two air gaps are formed between the two primary sides and the secondary side respectively. The motor is a single-phase motor or a multi-phase motor, wherein the multi-phase motor is modular combination of the single-phase motors. Permanent magnets and the armature windings of the permanent magnet linear motor are arranged at the primary sides; through the big open slot structure design, winding heat dissipation is realized helpfully, and through the design of a large electrical load, thrust is improved; and meanwhile, the secondary side is simple in structure and light in weight.

The invention provides a parallel device based on a Delta mechanism and a 3D printer adopting the same. The parallel device based on the Delta mechanism comprises a first-grade motion mechanism, a second-grade motion mechanism, a bearing main platform, a support platform and a terminal actuation platform. The 3D printer comprises a monitoring module, a control module and a feeding module. The feeding module is mounted in the middle position of the lower side of the bearing main platform; the monitoring module is connected with the control module; and the control module is respectively connected with the first-grade motion mechanism and the second-grade motion mechanism. The parallel device based on the Delta mechanism and the 3D printer adopting the same have the following beneficial effects: besides of overcoming the defects in the prior art, when the working space of the 3D printer is enlarged, the complex degree of the printer mechanical structure is reduced; and the 3D printer based on the Delta parallel mechanism is simple in structure, and is higher in precision and efficiency.

The invention provides a winding modular permanent-magnet motor. The winding modular permanent-magnet motor comprises a stator, a rotor and air gaps, wherein the stator comprises a stator core, armature windings, permanent magnets and magnetic conduction small teeth, large grooves are formed in the stator core, the permanent magnets and the magnetic conduction small teeth are arranged at groove openings facing the air gaps, the arc lengths of the permanent magnets and the magnetic conduction small teeth both are Pi, the magnetization direction of the permanent magnets are same, a positive winding and a negative winding of a single effective coil of each phase are arranged in two adjacent large grooves, N coils in the same phase are sequentially wound around adjacent 2N large grooves according to a single coil winding method, teeth among the grooves where the same phase winding is located are first teeth, teeth among different phase windings are second teeth, the rotor comprises rotor cores and gaps, the arc length distance between adjacent rotor cores is 2Pi, and an air gap is formed between the stator and the rotor. The motor employs a same-phase winding modular structure design, the winding structure is simplified, the length of an end part of the winding is shortened, the winding utilization ratio is improved, and the torque density is improved.

The invention provides a ram type main transmission mechanism for a milling machine. The ram type main transmission mechanism comprises a spindle driving servo motor, a transmission gear box and a machine tool spindle, wherein the machine tool spindle is arranged in the front of a ram; the transmission gear box is arranged at a position, which corresponds to the machine tool spindle, of the ram; the lower part of the transmission gear box is positioned in the ram; the spindle driving servo motor is arranged on the ram; an input shaft of the transmission gear box is connected with the spindle driving servo motor through a coupling; an output shaft of the transmission gear box is connected with the machine tool spindle through an output gear and a machine tool spindle gear; and the input shaft and the output shaft of the transmission gear box can be connected with each other through multilevel gear transmission pairs which are arranged on different transmission shafts and can realize high-gear and low-gear rotational speed output. The transmission gear box and the ram are separated from each other, transmission of the transmission gear box is realized by gears, transmission rigidity is high, the size of the ram is small, the ram is simple in structure, the transmission gear box is convenient to mount and maintain, and the ram type main transmission mechanism is modularly designed and manufactured easily.

The invention discloses refrigeration equipment capable of automatically balancing the filling quantity of a refrigerant. The refrigeration equipment comprises a compressor, a condenser, a condensatefan, an expansion valve, a plate type heat exchanger, a gas-liquid separator, high-pressure and low-pressure sensors, a filling tank, two solenoid valves, a heating belt and a pressure sensor; and theoutput end of the compressor is connected with the input end of the condenser, the high-pressure sensor is connected to a connecting pipe, the output end of the condenser is provided with a first branch circuit and a second branch circuit, the first branch circuit is connected with the input end of the expansion valve, then sequentially connected with the plate type heat exchanger and the gas-liquid separator, and finally connected into the input end of the compressor, the low-pressure sensor is connected to a connecting pipe between the gas-liquid separator and the input end of the compressor, the second branch circuit of the output end of the condenser is connected with the input end of the filling tank, the first solenoid valve 61 is arranged on a connecting pipe, the output end of thefilling tank is connected with the input end of the gas-liquid separator, the second solenoid valve is arranged on a connecting pipe, and the electric heating belt is wound around the surface of a tank body of the filling tank, and the tank body is connected with the pressure sensor. The pressure of the filling tank can be controlled by controlling on-off of the electric heating belt.

The invention relates to a distributed driving new wheel-rail high-speed train system in the technical field of rail transit, comprising a plurality of bogie bodies and a pair of rail assemblies, wherein each rail assembly comprises a load bearing rail and a guide rail; each bogie body comprises a compartment connecting frame, a load bearing frame, load bearing wheels, guide wheels, a transverse telescopic linkage mechanism, a spring damping assembly, a shock absorbing assembly, and a motor mounting frame; the load-bearing wheels of each bogie body are two and roll on two load bearing rails respectively; the guide wheels of each bogie body are provided with two groups and roll on two guide rails respectively; each load-bearing wheel is provided with a power unit including a load-bearing wheel drive motor mounted on a motor mounting bracket; and the output spindle of the load-bearing wheel drive motor is drivingly connected to the wheel axle of the load-bearing wheel. Therefore, the distributed driving new wheel-rail high-speed train system enables each load-bearing wheel to be equipped with an independent power source.

The invention discloses a device for automatically realizing fresh air replacement for an integral external air conditioner. The device comprises a square cabin and the integral external air conditioner, wherein a carbon dioxide sensor is arranged at an air return opening of the integral external air conditioner; a ventilation air valve assembly is arranged in an evaporation air cavity of the integral external air conditioner; an air inlet of the ventilation air valve assembly is led to an external environment, and the ventilation air valve assembly comprises an air valve mechanism and a driving mechanism for driving the air valve mechanism to work; the carbon dioxide sensor and the driving mechanism are electrically connected with a control panel of the integral external air conditioner respectively through signal cables. By detection of the concentration of carbon dioxide in the square cabin or a room, fresh air replacement is automatically and intelligently realized, so that fresh air can be automatically supplemented into the square cabin; therefore, potential safety hazards caused by extremely high concentration of the carbon dioxide in the closed square cabin where a worker stays for a long time are avoided.

The invention relates to an automatic loading and unloading device of a numerical control honing machine. The automatic loading and unloading device is suitable for automatic loading and unloading parts to be processed during processing of the honing machine in the cylinder linear processing industry. The automatic loading and unloading device is characterized by comprising an optical axis (7), two ends of the optical axis (7) are respectively installed on a middle auxiliary supporting base (10) and a right auxiliary supporting base (6), the optical axis (7) is in gap matching with the middle auxiliary supporting base (10) and the right auxiliary supporting base (6), and the middle auxiliary supporting base (10) is fixed on a working table (5). A loading shifting block (2) and an unloading shifting block (4) are respectively and fixedly installed on the optical axis (7), and the loading shifting block (2) is in rigid connection with the unloading shifting block (4) through a connection shaft (11). The automatic loading and unloading device of the numerical control honing machine can totally replace manual loading and unloading and greatly improves the production efficiency of manufacturing industry.

The invention provides an object under a force balance state. The object comprises a subject main body, a structural body array and a connector; and a plurality of structural bodies are sequentially connected through a variable-rigidity active execution part. The invention further provides a corresponding vibration control and posture adjustment method which comprises a vibration control step on a transmission path, a dynamic vibration absorption step based on variable-rigidity damping characteristics and an auxiliary posture adjustment step. The object is the variable-rigidity execution part based on structure-function integration, damages on a plate-shaped structure main body, and even the subject main body are avoided, and a control algorithm is simpler and more effective; active vibration suppression can be separately carried out on disturbance from a plate-shaped structure, and active dynamic vibration absorption is carried out on vibration from the subject main body; and the method can be carried out at multiple frequency bands and in multiple freedom directions; and posture of the subject can be adjusted in an auxiliary manner.

The invention provides a novel two-propeller intelligent underwater robot, and relates to the technical field of intelligent underwater robots. The novel two-propeller intelligent underwater robot comprises a robot framework, a front sealed cabin and a rear sealed cabin are arranged on the two sides of the center of the robot framework respectively, and a directional propeller is installed in the center of the robot framework; the directional propeller comprises a duct, a waterproof motor and blades, the duct is installed in the center of the robot framework, the waterproof motor is installed in the center of the duct, the vector thruster is installed in the center of the tail end of the robot framework, and the vector propeller comprises a first underwater steering engine, a second underwater steering engine, a connecting shaft, a connecting frame and a main propeller. The intelligent underwater robot not only is simple in structure, high in reliability and low in cost, but also has the advantages that the control logic is simple, the control system is easy to realize, the response is quick, the control precision is high and the like, and the development and manufacturing cost of the underwater robot is reduced on the premise of meeting the technical requirements.

The invention discloses a device for increasing air volume of a dehumidifier condenser. The device comprises a dehumidifier composed of an evaporator, a filter, a capillary tube, the condenser, a centrifugal fan, a reversing valve and a compressor. An air door is arranged between the air output end of the evaporator and the air input end of the condenser. A temperature sensor is arranged at the air output end of the condenser. On one hand, the temperature sensor is electrically connected with a drive mechanism of the air door through a controller; on the other hand, the temperature sensor is connected with an alarm circuit through the controller. The device additionally provided with the air door is used, during high temperature, the air volume of the condenser is increased, while the air volume of the evaporator is kept unchanged, or the air volume is reduced appropriately, thus, the evaporating point of the evaporator is controlled, the dehumidifying ability and precision of the dehumidifier are improved, and the device can work stably and reliably in a high-temperature environment.