347results about How to "Play the role of energy saving and environmental protection" patented technology

The invention discloses a pulse width modulation (PWM) rectification, variable-voltage and variable-current pulse charging system of an electric vehicle and belongs to a large-size storage battery charging system. The system comprises a rectification module, a charging module and a direct current charging management module; the rectification module is respectively connected with an alternating current power grid and the charging module; the charging module consists of a direct current input module and a direct current output module; the rectification module, the direct current input module, the direct current output module and the direct current charging management module are mutually-independent modules and are contacted together through network buses. The PWM rectification, variable-voltage and variable-current pulse charging system of the electric vehicle has a simple structure, a small size and wide application ranges, can be applied to the charging of all lead-zinc storage batteries, and is applicable for large-scale promotion. Moreover, the charging time of the storage batteries is greatly shortened.

The invention provides a preparation method of a metal-doped zinc oxide liquid-phase homogenous-dispersed body. The preparation method is characterized in that zinc salt is used as a reaction source and metal salt is used as a doping source in an alcohol phase system, and on that basis, the metal-doped zinc oxide nano-particle dispersing liquid is prepared by adoptinga low-temperature solution method under an alkaline condition; then a trace of surfactant is added to further improve the dispersing stability and the conductivity. The liquid-phase homogenous-dispersed body is characterized in that the metal-doped zinc oxide particles are wrapped with the surfactant layer, and the one-dimensional size is 10-20nm; the nano-particles are uniformly dispersed in the liquid-phase medium; the concentration of the metal-doped zinc oxide particles in the dispersed body is 10-20mg / mL. The preparation temperature of the metal-doped zinc oxide dispersed body is not beyond 80 DEG C; the preparation process is simple, the energy is saved and the environment is protected; the product is high in stability, high in conductivity, and free from precipitation after standing for more than 3 months; the obtained nanometer material is high in conductivity and has a good application prospect in the field of photoelectric appliance such as the solar cell field.

The invention relates to a sub-depot flow-guiding type solar water heater water tank with simple structure and good insulating and energy-saving effects, comprising a water tank body and a vacuum pipe, wherein the water tank body is connected with the vacuum pipe; the water tank body is provided with a water inlet and a water outlet; the water inlet is provided with an automatic water supplying device; an exhaust valve is arranged above or on the side wall of the water tank body; the water tank body is internally divided into a heating depot and a water storing depot by a heat insulating device; the water inlet is positioned at the water storing depot and the water outlet is positioned at the heating depot; the heat insulating device is provided with a flow-guiding pipe communicating the heating depot and the water storing depot; the exhaust valve is respectively arranged above or on the side wall of the heating depot and the water storing depot; and the water inlet is provided with the automatic water supplying device. The solar water heater water tank is designed in a sub-depot manner, stores heat and heats in the sub-depot manner, and separates transmission of the water temperature of the two depots by the heat insulating device; an electric heating device heats the heating depot, and play the roles of saving energy and protecting environment, wherein the heated amount is same as the used amount;, thus solving the difficulty that the electricity amount is large when electric heating is started in winter and cloudy and rainy days.

The invention relates to a total power fuel cell air compressor dual-layer prediction control method. An upper-layer predictor computes power needed by a fuel cell automobile at a corresponding speedthrough predicting the speed in real time; an air flow needing to be output by a fuel cell air compressor is computed through putting the power needing to be provided by a fuel cell computed by the upper-layer predictor into a fuel cell cathode flow model, and used as a reference flow of a bottom-layer prediction controller. The bottom-layer prediction controller predicts the air flow needing to be output by the fuel cell air compressor according to the reference flow, and meanwhile acquires a control voltage of the air compressor, and thus control on the output flow of the air compressor is achieved, and oxygen needed by a fuel cell stack reaction is met. According to the method provided by the invention, the speed can be predicted, air quality flow needing to be output by the fuel cell air compressor can be predicted, the controller is used for controlling the output flow of the fuel cell air compressor, and the efficient and stable operation of the automobile is achieved.

The invention provides a preparation method of a ZIF-8 nano-material / graphene oxide (GO) composite membrane which is subjected to amino-functionalization modification by using 3-aminopropyltriethoxysilane (APTES), as well as an application of adsorption on copper ions in water. The invention belongs to the technical field of material preparation and analysis and detection. In the method, Zn(NO3)2and 2-methylimidazole (2-Im) are used for preparing a ZIF-8 nano-material; then the ZIF-8 nano-material is modified by the APTES to enhance the capability of adsorbing heavy metal ions; then the GO isdissolved in distilled water and is modified by the APTES; the two modified components are subjected to mixing reflux reaction for 24 h; finally, the product is cooled and is subjected to vacuum suction filtration to form the membrane.

The invention discloses an environment-friendly and energy-saving type cereal drying, cooling and dust removing device. The environment-friendly and energy-saving type cereal drying, cooling and dust removing device comprises a box, a purifying barrel and a raise dust barrel. Landing legs are arranged on the two sides of the lower end of the box. A feeding barrel is arranged at the upper left end of the box and internally provided with a feeding packing auger. The lower end of the feeding barrel stretches into the box. The left end face of the box is an oblique face. An oblique material guiding plate with the low left part and the high right part is arranged in the part, on the right side of the feeding barrel, of the box. Through the arrangement of the oblique face and the oblique material guiding plate, materials are conveniently gathered to the position below the feeding barrel. A charging port and a charging cover plate located at the position of the charging port are arranged on the upper end face of the part, on the left side of the feeding barrel, of the box. The raise dust barrel is arranged at the upper end of the part, on the right side of the feeding barrel, of the box. The lower end of the raise dust barrel communicates with the box. A material guiding pipe is arranged between the upper end of the raise dust barrel and the feeding barrel. The left end of the material guiding pipe is higher than the right end of the material guiding pipe. A plurality of oblique raise dust plates are arranged in the raise dust barrel in a crossed manner. The environment-friendly and energy-saving type cereal drying, cooling and dust removing device is simple and reasonable in structure, energy saving and emission reduction are achieved, people can conduct drying and dust removal on cereal conveniently, and practicability is high.

The invention relates to a manufacturing method of a compressor volute casing. The method comprises the following steps: establishing a three-dimensional model of the compressor volute casing, introducing the three-dimensional model into rapid molding equipment, directly sintering out a shape of the compressor volute casing of a plastic material instead of a sand core by using a powder sintering technology and a laser numerical control technology, and finishing casting and molding of the compressor volute casing through a traditional investment casting method. As the mold manufacturing and sand core making process is eliminated in the method, the trial period in the production is reduced, the efficiency is increased and the production cost is reduced; and the manufacturing method provided by the invention is especially suitable for trail production in a development phase and medium and small-scale production. Through the adoption of the manufacturing method provided by the invention, the manufacturing period is reduced, and the manufacturing precision of the product can be also guaranteed. Compared with similar domestic methods, the manufacturing method provided by the invention has the advantages as follows: as technological design and manufacture of a wooden mold and the making process of the sand core are eliminated, an energy-saving and environment-friendly effect is taken.

The invention discloses energy-saving and environment-friendly medical orthopedical waste gypsum crushing and grinding recovery equipment which comprises a box body, wherein a feeding pipe is arrangedon the top of the box body; a magnet is arranged at the top end of the left side wall of the feeding pipe; a cover plate is arranged on the right side wall of the feeding pipe; two crushing rollers are arranged below the feeding pipe; a cam is arranged on a rotating shaft of each crushing roller; the rotating shafts of the crushing rollers are separately connected to a first driven wheel and a second driven wheel; a crushing screening frame is arranged below the crushing rollers; a square block is arranged in the crushing screening frame; a blade and sieve holes are formed in the crushing screening frame; a guide bar is arranged at the bottom of the crushing screening frame; a crushing roller is arranged in the bottom of the crushing screening frame; the rotating shafts of the crushing rollers are separately connected to a third driven wheel and a fourth driven wheel; a driving wheel is connected to the rotating shaft of a motor; impellers are arranged on the rotating shaft of the motor; a motor protecting cover is arranged on the motor; the crushing screening frame is arranged below the crushing rollers; and a semi-spherical block and the sieve holes are formed in the crushing screening frame. The energy-saving and environment-friendly medical orthopedical waste gypsum crushing and grinding recovery equipment disclosed by the invention is good in crushing and grinding effectand is energy-saving and environment-friendly simultaneously.

The invention discloses a multifunctional road and bridge height limiting device, which comprises a height limiting frame, a height measuring frame and a deceleration belt. The lower ends of the height limiting frame and the height measuring frame are both provided with a diagonal support frame, and the upper end of the height limiting frame is provided with a support frame. , the support frame is provided with a solar power generation device, the lower side of the support frame is provided with a number of lighting lamps, the lower end of the lighting lamp is provided with a display screen 1, and the upper end of the height measuring frame is provided with a solar power generation device, the The lower end of the solar power generating device is provided with a display screen two and a display screen three. When the vehicle passes through the device, it first decelerates through the deceleration belt, and then passes through the height measuring frame. The infrared transmitter and infrared receiver are always in the state of transmitting and receiving. When the vehicle passes through the height measuring frame higher than the specified height, the infrared receiver cannot receive infrared rays. At this time, the alarm will sound an alarm to warn the driver to prevent traffic accidents caused by hitting the height limit pole.

The invention discloses an energy-saving and environment-friendly photovoltaic street lamp intelligent management and control system comprising a master control module, a remote monitoring center, a storage module, a multipath power supply module, an environmental parameter acquisition module, a video monitoring module, an illuminance sensing module, a pedestrian and vehicle induction module, a street lamp on / off light brightness regulating module, an emergency alarm module, a communication module and a street lamp module. According to the energy-saving and environment-friendly photovoltaic street lamp intelligent management and control system, commercial power and storage battery power supply are combined, and the storage battery uses the photovoltaic power supply as the charging power source so that the energy pressure can be alleviated and the pollution can be reduced. Meanwhile, on / off and brightness of the street lamp are controlled in real time so that the lighting effect can be achieved and the energy conservation and environmental protection effects can also be achieved, the road situation can be monitored in real time, the whole management and control system is enabled to be further intelligent, automatic and comprehensive, and the management and control system has high practical value and wide application prospect.

The invention discloses a split type air cooling type constant temperature and humidity air conditioner. The air conditioner comprises a shell, a compressor, a reheating condenser, an expansion valve, an evaporator, a humidifier, an air supply fan, an air cooling condenser and a corresponding condensation fan, wherein the compressor, the reheating condenser, the expansion valve and the evaporator are arranged in the shell and circularly connected in sequence, the humidifier is arranged in the shell, the air supply fan is arranged in an air supply outlet of the air conditioner, and the air cooling condenser and the corresponding condensation fan are arranged outdoors. An inlet of the reheating condenser and an inlet of the air cooling condenser are connected with an air outlet of the compressor through a three-way proportional control valve. An outlet of the reheating condenser and an outlet of the air cooling condenser are connected with an inlet of the expansion valve in parallel. The split type air cooling type constant temperature and humidity air conditioner effectively utilizes heat produced in a refrigerant circulation process for heating air, achieves the purposes of energy conservation and environment protection and meanwhile further has the advantages of being easy to adjust, high in reliability and the like.

The invention provides an energy-saving environmentally-friendly type circulating water system for a wet flue gas desulfurization process. The energy-saving environmentally-friendly type circulating water system for the wet flue gas desulfurization process comprises a desulfurization tower; a waste water outlet of the desulfurization tower is connected with a filtering pool through a first pipeline; a first pump body is arranged on the first pipeline; a water outlet pipeline is arranged at the inner bottom of the filtering pool; a plurality of water outlet holes are formed in the water outlet pipeline; the right end of the water outlet pipeline is communicated with the first pipeline; a honeycomb-like inclined pipe is arranged in the filtering pool above the water outlet pipeline; a filter screen device is arranged above the honeycomb-like inclined pipe; a second pump body is arranged in the filtering pool. The energy-saving environmentally-friendly type circulating water system for the wet flue gas desulfurization process has the following beneficial effects: 1, a first filter screen, a second filter screen and a third filter screen on a filter screen device are used for performing precipitation effect on impurities in the waste water, so that the granular impurities in the waste water can be precipitated as soon as possible; 2, the uniform mixing range is changed by a uniform mixing device, so that the flocculation effect of a flocculating agent and the waste water is more excellent and the flocculating effect is effectively improved.

The invention discloses a multifunctional vacuum cleaning robot. The multifunctional vacuum cleaning robot comprises an engineering plastic shell, a sweeping device, a dust collecting device and a wireless remote controller and is characterized in that a dust remover, a PLC electric control device, an E3200 information processor, a lithium battery and an FU variable-frequency speed controller are mounted in the engineering plastic shell, the dust remover and the E3200 information processor are respectively located at two ends of the PLC electric control device, the FU variable-frequency speed controller is located below the PLC electric control device, the dust collecting device comprises a dust inlet tube, a dust collector, a dust collecting tube and a dust collecting port, the dust collecting tube is connected with the dust inlet tube through the dust collector, the dust inlet tube is connected with a dust collecting box, the dust collecting box is connected with the dust remover through a dust outlet tube, the sweeping device comprises a radiator, a motor, a transmission rod and a sweeping brush, the sweeping brush is mounted at one end of the transmission rod, and the other end of the transmission rod is connected with the radiator through the motor. The multifunctional vacuum cleaning robot is quite convenient and efficient to use and wide in application range.

The invention discloses a power system for driving running of a powered automobile. The power system comprises an engine, a transmission, a differential mechanism, a clutch, a driving shaft, a continuously variable transmission and a flywheel device, wherein the clutch is connected with the engine and the transmission, the driving shaft transfers power from the output end of the transmission to the input end of the differential mechanism, the input end of the continuously variable transmission is connected with the output end of the flywheel device, and the output end of the continuously variable transmission is connected with the input end of the differential mechanism. The power system is simple and compact in structure and capable of effectively recovering and making use of energy of a system, the utilization rate of energy is increased, and economical efficiency and dynamic property of the finished vehicle are improved. On this basis, the invention further discloses a control method of the power system and the powered automobile with the power system.

The invention belongs to the cable manufacturing field and specifically provides a heatproof low smoke halogen free flame retardant rail transit rubber cable sheath material which can resist temperature from minus 55 DEG C to 125 DEG C. The rail transit rubber cable sheath material is prepared by the following steps of: mainly selecting polar ethene-vinyl acetate rubber and nonpolar high-molecular silicone rubber materials as basic rubber, adding its corresponding vulcanization system, adding a frame retardant aluminium hydroxide and a zinc borate flame retardant, a zinc stabilizing agent, an ultralow temperature resistant sebacic acid phthalate plasticizer, a silane coupling agent and the like, so as to prepare the low smoke halogen free flame retardant rail transit rubber cable sheath material. The material provided by the invention can resist ultralow temperature of minus 55 DEG C for a long time, can also resist high temperature of 125 DEG C, can resist mineral oil and fuel oil, and has good flame retardance. The material provided by the invention accords with the requirement of the ultralow temperature resistant rail transit controlling cable and can bring convenience for rail transit locomotive cable users.

The invention discloses a preparation method of a fish gelatin high-molecular material, relates to a fish gelatin high-molecular material, and provides a preparation method which is good in gelation performance for a fish gelatin high-molecular material. The preparation method comprises the following steps of: 1) raw material pretreatment: by taking fish skins and fish scales as raw materials, soaking the raw materials with sodium hydroxide solution containing a surfactant and an oxidant, rinsing cleanly, adding pure water, adjusting the pH value of the solution to 5-6 by polybasic carboxylic acid, and then stirring and crushing the raw materials into extraction raw materials for gelatins; 2) gelatin extraction: adding a protease inhibitor and a protein thermal denaturation protectant in the raw materials pretreated in the step 1), heating and extracting gelatin solution; and 3) drying: filtering the gelatin solution obtained in the step 2) to remove impurities such as melanin, cooling and condensing, drying at a low temperature and crushing, and then preparing the fish gelatin high-molecular material powder. The preparation method is simple in process, short in extraction time, and beneficial to popularization for fish gelatin industrialized production.

The invention discloses an energy-saving and environment-friendly solar street lamp. The energy-saving and environment-friendly solar street lamp comprises a supporting plate, wherein a first slidinggroove is formed in the upper surface of the supporting plate, a first sliding block is slidably connected in the first sliding groove, a first connecting block is fixedly connected to the upper surface of the first sliding block, the front surface of the first connecting block is hinged to the lower portion of the back surface of a first connecting plate through a first pin shaft, and the upper portion of the back surface of the first connecting plate is hinged to the front surface of a second connecting block through a second pin shaft. According to the energy-saving and environment-friendlysolar street lamp, a motor is arranged, an output shaft of the motor rotates to drive a first bevel gear to rotate, the first bevel gear drives a second bevel gear to rotate, the second bevel gear drives a threaded rod to rotate, and the threaded rod rotates to drive a threaded cap to move left or right, so that the angle of the solar panel is adjusted, the lighting rate of the solar panel is increased, the photoelectric conversion efficiency of the solar panel is improved, and convenience is brought to people when the solar street lamp is used.

A provided preparation method for 4-chlorophenylhydrazine hydrochloride comprises the following steps: 1) under an acidic condition, at 5-10 DEG C, dropwise adding a sodium nitrite aqueous solution with a concentration of 20% into 4-chloroaniline to perform a diazo reaction and to generate a diazo salt; 2) under a room temperature condition, dropwise adding an ammonium sulfite aqueous solution into a solution of the diazo salt obtained in the step 1, heating to 50-60 DEG C and keeping the temperature for 3-4 h; and 3) at 50-70 DEG C, dropwise adding a hydrochloric acid solution with a concentration of 20% into the solution obtained in the step 2, keeping the temperature for 1-2 h, reducing the temperature, filtering, washing, discharging the material, and drying to obtain a finished product. The beneficial effects comprise that by using ammonium sulfite aqueous solution as a reducing agent in the reduction reaction, the problems are solved that sodium sulfite solid is easy to cake during material charging in a conventional technology and material charging is not easy to operate; ammonium chloride and ammonium hydrogen sulfate which are generated in the acidification reaction have high solubility in water, and crystallization precipitation is late, thereby facilitating performing of the acidification reaction in the solution and reducing side reactions; and the product crystallizes loosely, is good in fluidity, easy for material discharging and washing, and product quality and yield are both better than conventional production levels.

The invention discloses an industrial roller brush carrier roller automatic cutting device with high cutting efficiency. The industrial roller brush carrier roller automatic cutting device comprises aworkbench, two fixing blocks are symmetrically arranged on the upper surface of the workbench, containing grooves matched with a carrier roller are formed in the upper surfaces of the fixing blocks,moreover, first fixing cylinders are fixedly connected to the front surfaces of the two sides of the fixing blocks through bolts, and second fixing cylinders are arranged at one ends of the first fixing cylinders. The invention relates to the technical field of roller brush carrier roller cutting. According to the industrial roller brush carrier roller automatic cutting device with the high cutting efficiency, one ends of servo motors are installed on one side surfaces of the second fixing cylinders in an embedded and rotating mode, when the carrier roller is cut, the carrier roller can be automatically clamped and firmly fixed, so that the situation that the cutting effect is affected due to the fact that the carrier roller shakes during cutting is prevented, the industrial roller brush carrier roller automatic cutting device replaces the operation of manually holding the carrier roller by hands for fixing, so that the safety performance is improved, meanwhile, the labor intensity ofworkers is reduced, and the practicability is high.

The invention discloses a controlling method for a flow-divided type air cooling type constant-temperature constant-humidity air conditioner. The constant-temperature constant-humidity adjustment to air through the flow-divided type air cooling type constant-temperature constant-humidity air conditioner is realized by automatically controlling the running status of a compressor, a three-way proportional adjusting valve, an auxiliary electrical heater and a humidifier. A reheating condenser is arranged in the air conditioner, the air is heated by the heat carried out by a compressed cooling agent and needing to be exhausted into air originally, thus an electrical heater in the constant-temperature constant-humidity air-conditioner in the prior art is replaced, and energy-saving and environment-friendly functions are achieved. The flow of cooling agent which enters the reheating condenser and an air-cooled condenser is adjusted by controlling the three-way proportional adjusting valve, and the purpose of accurate adjustment of air heating is realized.

The invention is suitable for the image equipment production technology field and provides an apparatus capable of preventing from dust and fume and an overhead projector comprising the same. The apparatus capable of preventing from dust and fume comprises a shell. A first accommodation chamber and a second accommodation chamber are arranged in the shell. The first accommodation chamber is a sealed chamber. A semiconductor refrigeration sheet is arranged on a junction of the first accommodation chamber and the second accommodation chamber. A cold side and a heat side of the semiconductor refrigeration sheet respectively face the first accommodation chamber and the second accommodation chamber. At least one air inlet and a plurality of air vents are arranged on the second accommodation chamber. An external cooling fan is arranged on the each air inlet. The overhead projector employs the apparatus which can prevent from dust and fume. By using the apparatus capable of preventing from the dust and fume and the overhead projector provided in the invention, smog, oil smoke and various kinds of dusts can be effectively prevented to enter into the apparatus. Therefore, equipment can be applied in various kinds of hostile environments and a service life can be prolonged.

The invention relates to audio and video equipment and a startup and shutdown method thereof. The audio and video equipment is connected with a television set through an SCART (syndicat des constructeurs d'appareils radiorecepteurs et televiseurs) interface. The method comprises the following steps of: detecting a synchronizing signal in an operating state in real time; if the synchronizing signal is not detected, entering a standby state from the current operating state; detecting the synchronizing signal in the standby state in real time; and if the synchronizing signal is detected, entering the operating state from the current standby state, wherein the synchronizing signal is separated from a composite video signal output by the SCART interface. By implementing the technical scheme provided by the invention, the audio and video equipment is started up and shut down along with the startup and the shutdown of the television set, so user operation is facilitated; meanwhile, the problem of energy waste caused by switching off television set but not switching off video equipment by a user is solved, and the effects of energy conservation and environmental friendliness are achieved.

The invention discloses a medical examination sampling device in the technical field of medical apparatuses. The medical examination sampling device comprises a box body, wherein a sampling chamber isformed in the right side of the inner cavity of the box body; a first rotating rod is arranged on the left side of the bottom of the inner cavity of the box body; a first driving wheel is connected to the outer wall of the first rotating rod and connected with a second driving wheel by virtue of a driving belt; a second rotating rod is arranged on the second driving wheel; a groove is formed in the bottom of the sampling chamber; a rotating disc is connected into the groove; a supporting rod is arranged at the top of the rotating disc; the top of the supporting rod is connected with a supporting plate; a sampling bottle placement rack is arranged at the top of the supporting plate; an L-shaped bracket is arranged on the right side of the top of the box body by virtue of a bearing; an electric telescopic rod is arranged at the bottom of a transverse rod of the L-shaped bracket; a sampling device is arranged at the bottom of the electric telescopic rod. The medical examination samplingdevice disclosed by the invention is reasonable in structure, convenient to use, capable of completely and effectively cleaning residues in sampling tubes in real time and less in usage of water resources, and energy-saving and environmental-friendly effects are effectively achieved.

The invention relates to an automatic cleaning net changing, washing and drying device adopting real-time embedded control and belongs to the technical field of real-time control. The automatic cleaning net changing, washing and drying device comprises a control module, an automatic net changing mechanism, a jet-propelled type dust removal mechanism, a water spray type dust removal mechanism, a dryer, a sewage treatment device and a water storage pool. The jet-propelled type dust removal mechanism is connected with the water spray type dust removal mechanism, the water spray type dust removal mechanism is connected with the dryer, and the sewage treatment device is connected with the jet-propelled type dust removal mechanism, the water spray type dust removal mechanism and the water storage pool, the water storage pool is connected with the water spray type dust removal mechanism, and the automatic net changing mechanism is connected with the jet-propelled type dust removal mechanism, the water spray type dust removal mechanism and the dryer. The automatic cleaning net changing, washing and drying device is simple in structure, low in cost and convenient and quick to operate, the pressure change of a cleaning net can be detected through a differential pressure transducer, the enrichment degree of dust on the cleaning net is analyzed through a single-chip microcomputer module, the cleaning net is automatically changed, washed, dried and collected, cleaning sewage is treated and recycled, and the effects of energy saving and environment friendliness are achieved.

The invention discloses a building power generation rowing machine. The building power generation rowing machine comprises a main frame, a cushion, a support rod, a holding rod, a damping device, a pulley block, a generating set, a driving band, and a storage battery, wherein the cushion is slidably arranged on the main frame; the support rod is arranged on the main frame; the holding rod is arranged on the support rod; the damping device comprises a belt wheel which is rotatably arranged on the support rod and is connected with the holding rod through a traction band; the pulley block is arranged on the main frame and is connected with the belt wheel through an elastic band; the generating set comprises a generator which is arranged between the main frame and the support rod and comprises an input shaft; the driving band is connected with the belt wheel and an input shaft of the generator; and the storage battery is connected with the generator and is sued for storing electric energy produced by the generator. The building power generation rowing machine has a simple structure, is convenient to operate, is safe and environmental-friendly in a power generation process, excises the body of a user, can store energy produced during excising for later use, and has a function of energy conservation and environmental-friendliness to certain extent.

The invention discloses a high alloy wear-resistant double-layer composite straight pipe used for a concrete pump truck. The high alloy wear-resistant double-layer composite straight pipe comprises an outer pipe, an inner pipe and a shock absorption material. The inner pipe is pushed into the outer pipe. The shock absorption material is arranged between the outer pipe and the inner pipe and is made of one or more of EVA, PE, CR, PU foam and PORON. The high alloy wear-resistant double-layer composite straight pipe has the beneficial effects of being high in strength, resistant to impact, high in abrasion resistance and the like; the abrasion cycle is prolonged by 5 times to 6 times compared with those of other similar products, so that the effects of greatly reducing the operation cost, materials and the number of replacement times are achieved, the service life is prolonged, the production efficiency is improved, and the effects of energy conservation and environment protection are achieved.

The invention relates to a frequency changer, a motor testing system and method and a mounting method. The system comprises a control cabinet, an asynchronous motor driven frequency changer, an energyfeedback unit, a permanent magnetic synchronous motor driven frequency changer, a tested voltage current sensor, a system voltage current sensor and a testing stand, the testing stand comprises a mounting base, a triphase alternating-current asynchronous motor, a permanent magnetic synchronous motor, a torque sensor, a coupler, a speed reducer and a lifting movable motor mounting support, input ends P and N of the permanent magnetic synchronous motor driven frequency changer are connected with those of the energy feedback unit, and the output end of the energy feedback unit is connected with380V of a power grid. Energy input to the testing system by the power grid outside is reduced, so that the objectives of saving energy and protecting environment.

The invention discloses a system and a method for controlling LED lighting and energy conservation for underground garages. An infrared camera of the system is connected with an NBC connector of a camera driving module in a main control module, a CAN (controller area network) communication interface of a CAN main driving module in the main control module is connected with a CAN communication interface of a CAN secondary driving module in each relay controller, and a communication DALI (digital addressable lighting interface) of a DALI main driving module in each relay controller is connected with communication DALIs of DALI secondary driving modules in N LED drivers. The system and the method have the advantages of low cost and later-stage maintenance cost, simplicity and convenience in installation and capability of independently controlling various lamps.