140results about How to "High energy saving rate" patented technology

The invention provides a coaxial coupling driving system of double planetary gear systems and double motors. The coaxial coupling driving system comprises the double motors, the double planetary gear systems and the like. Each planetary gear system comprises a gear ring, a planetary carrier and a sun wheel. A rotor of the first motor is connected with the gear ring of the first planetary gear system. A rotor of the second motor is connected with the sun wheel of the first planetary gear system and the sun wheel of the second planetary gear system through synchronizers correspondingly. The planetary carriers of the two planetary gear systems are connected with an output shaft. The gear ring of the second planetary gear system is connected with a shell. The output shaft is connected with the input end of a deceleration differential. The output end of the deceleration differential is connected with two wheels through two half shafts. A motor control device is connected with an energy storage device and conducts electric power transmission. The motor control device is further connected with the first motor and the second motor and outputs a control command. The coaxial coupling driving system has the characteristic that the vehicle dynamic property, the energy consumption economical efficiency, the geographical adaptability and the application adaptability are better.

The invention discloses a rail transit power supply system twin coil access medium-voltage energy feed system and method. The system comprises a rectification transformer, a twin coil access energy feed device, and a rectification unit. The twin coil access energy feed device comprises two energy feed branches arranged in parallel. Each energy feed branch comprises an AC-side low-voltage breaker, an isolation transformer, an inverter, and a DC-side contactor which are successively arranged in series. The method comprises steps that current is acquired from a medium-voltage AC power grid and is supplied to a DC traction network by means of the rectification transformer and the rectification unit when a train is started; and the twin coil access energy feed device is started and train braking energy is fed back to the medium-voltage AC power grid via the twin coil access energy feed device and the rectification transformer when the train is braked. The system may achieve energy conservation and stable DC bus voltage, is good in flexibility, small in size, high in combination with a conventional system, high in power factor, low in harmonic injected into an AC side, and good in universality.

The present invention discloses a high-pressure pneumatic gravity balance type space motion simulator. It is composed of parallelly-connected six-freedom motion platform, simulation chamber, heaving movement platform and safety protective system. On the intermediate platform of heaving movement platform system the parallelly-connected six-fredom motion platform is mounted, and a gravity balance device formed from driven hydraulic cylinder and cylinder and matched pneumatic system is vertically mounted in the central lower portion of the intermediate platform, and on the two ends of intermediate platform and its one side surface the guideway slide blocks are mounted, and matched with the guideways on the peripheral three walls of the motion simulator. It is safe, reliable and low in power consumptio, can implement six-freedom motion and heaving movement.

The present invention relates to a cast-in-place hard polyurethane composite decorative plate exterior heat-insulating system and its construction process. It is characterized by that said process includes the following steps: utilizing a special composition technique to make polystyrene or hard polyurethane foam plate and fluorocarbon aluminium alloy plate or fluorocarbon inorganic plate into a kind of misplaced heat-insulating decorative plate; fixing said heat-insulating decorative plate on wall body base layer in the field by adopting three-dimensinal positioning method and invisible plastic expansion stay bolt, and forming a cavity between said heat-insulating decorative plate and wall body base layer, pouring hard polyurethane foam into said cavity so as to form adhesive heat-insulating layer; finally caulking the periphery of said misplaced composite decorative plate.

The invention relates to a method for compensating and regulating the heating temperature of a centralized heat supply network, and belongs to the technical field of heat supply regulation. By the method, the problem that the aims of saving fuel, reducing discharge and allowing the indoor temperature of users to reach the standard cannot be fulfilled by the conventional method for controlling the temperature of a heating boiler. The method comprises the following steps of: measuring real-time outdoor temperature T by utilizing a thermometer; establishing a mathematical model, and calculating by the mathematical model to obtain a real-time water return temperature value W of the heat supply network; calculating and adjusting the real-time water return temperature value of the heat supply network according to the change of actual real-time water supply flow and actual heat supply areas of the heat supply network to obtain an actually-reached water return temperature value Wh of the heat supply network; and adjusting the combustion condition of the boiler according to the actually-reached water return temperature value Wh of the heat supply network in the step C, and controlling the actual water return temperature Wh1 of the heat supply network, so that a numerical value of the actual water return temperature Wh1 is consistent with that of the Wh. By the method, the fuel is saved, the discharge is reduced, the indoor temperature of the users reaches the standard, and the optimal state of heating is achieved.

The invention discloses an oil field control system which comprises a central control station and a plurality of underground submersible servodrive control subsystems communicating with the central control station, wherein each underground submersible servodrive control subsystem is connected with a production module in the well where the underground submersible servodrive control subsystem is, and the underground submersible servodrive control subsystem transmits the underground condition to the central control station according to the command and controlling parameters received from the central control station or a man machine interaction interface of the subsystem when controlling the operation of the production module. Through the invention, the operation condition of the submersible servodrive system in each well in the whole oil field can be accurately monitored and reasonably controlled by an operator, thus being favorable for improving the production efficiency and saving the operating cost.

The invention discloses a mobile unpowered energy-saving food preservation box which comprises a box body, a gas cycle preservation system, a remote data monitoring and global positioning system and a solar power generation electric power storage system; the cooling capacity circulating, nano purification, enzymatic inactivation dormancy preservation technology is adopted, the energy-saving rate is high, the solar energy is used for generating and storing the power, so that the food preservation box has the function of remote movement, unpowered self-survival long-term preservation. The invention further discloses a preservation method of the mobile unpowered energy-saving food preservation box, the method can dynamically monitor, adjust and control the preservation parameter at real time according to the movement longitude and latitude of the food by pre-cooling treatment and cooling capacity nano purification preservation, the food is guaranteed at the best preservation state. The unpowered cold chain preservation of the perishable fresh food for long distance movement can be achieved through the preservation box and the preservation method and the commercial value is great.

The invention discloses a method for calculating architectural energy saving rate based on a human body thermal adaptive model. The method comprises the following steps of: obtaining annual outdoor meteorological data of a building proposed site; calculating the mean natural room temperature of a building; drawing a thermal neutral temperature curve according to the thermal adaptive model; calculating a standard energy consumption; calculating an architectural energy consumption; calculating an architectural energy saving rate; establishing a standard model; calculating the energy saving rate of the standard model; judging the architectural energy saving rate; adjusting architectural parameters. According to the method, the shortcomings that the indoor comfortable temperature related to current architectural energy saving design standards in China is based on a PMV steady-state model and the energy saving rate of the building is not perfectly improved through the narrow comfortable area of the model according to the building design are overcome; meanwhile, the shortcoming that the number of energy saving goals achieved through the building design and the number of the energy saving goals achieved through equipment of one building cannot be accurately determined is overcome; the method is suitable for guiding the thermal performance design of the buildings and enclosure structures.

The invention provides a multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system. The multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system comprises a first motor and the like; a planetary gear train comprises a gear ring, a planet carrier and a sun gear; the rotor of the first motor is connected with the gear ring of the planetary gear train; the rotor of the second motor is connected with the sun gear of the planetary gear train and the input end of a transmission chain, respectively; a gear shifting device is connected with the input end of a speed reducing differential mechanism and control on power transfer from the planet carrier of the planetary gear train and the output end of the transmission chain to the speed reducing differential mechanism is realized; the output end of the speed reducing differential mechanism is connected with two wheels by use of two half shafts; a motor control device is connected with an energy storage device to transfer electric energy; the motor control device is further connected with the first motor and the second motor, respectively, and outputs control instructions. The multi-purpose adaptive second-gear multimode stepless speed changing electric transmission integrated power system has the characteristics of better technical inheritance to the existing vehicles, whole vehicle dynamic property, fuel economy and low emission.

The invention provides a method for air separation production on the liquid oxygen and the liquid nitrogen through the LNG (Liquefied Natural Gas) cold energy. According to the all-liquid air separation method, the investment is less, the energy-saving rate is high, the energy consumption is low, the cold loss is small, the output of the liquid nitrogen and the liquid oxygen is large, and the production cost can be greatly reduced. According to the technical scheme, the implementation steps of the method includes that the raw nitrogen from an air separation tower cold box is reheated through a main heat exchanger cold box to join the medium-pressure and low-temperature nitrogen separated through a gas and liquid separation tank to be reheated through a circulating heat exchanger cold box, the reheated low-pressure and low-temperature nitrogen is reheated through the circulating heat exchanger cold box, and the medium-pressure and normal-temperature nitrogen boosted through a nitrogen booster enters a circulating nitrogen booster to be boosted into the high-pressure nitrogen; the high-pressure nitrogen is precooled through the circulating heat exchanger cold box; the precooled high-pressure nitrogen is fed into the air separation tower cold box to serve as an air separation cold source, the high-purity and high-pressure liquid nitrogen is obtained at the bottom of an upper tower of an LNG cold energy recovery tower cold box, the high-pressure liquid nitrogen is throttled through a throttling valve to obtain the medium-pressure liquid nitrogen and the medium-pressure nitrogen, and the medium-pressure liquid nitrogen and the medium-pressure nitrogen are throttled through the throttling valve to obtain a low-pressure liquid nitrogen product and the low-pressure nitrogen.

Disclosed is a heat energy fee-charging network system in a public building, which belongs to the building central heating household heat metering technique field. The system comprises an intelligent control energy-saving valve, a heat energy master gauge and a computer management platform (6), the intelligent control energy-saving valve includes an electric three-way valve (9) and an intelligent controller (3), the electric three-way valve (9) is arranged at the inlet of a water inlet pipe (2) of each group of radiators (5) in the public building, the electric three-way valve (9) is connected with the intelligent controller (3), and the heat energy master gauge is connected with the computer management platform (6). The system is applied to various types of central heating systems (administrative office buildings, schools, apartments, etc.) in the existing public building; and the system has the advantages of balanced heat in buildings, solving the heat maladjustment problem (upper hot and lower cold), and energy saving; being capable of stating the valve adjustment time according to the work and rest time (including weekends and holidays) and realizing energy saving; and high reliability and high energy saving rate.

The invention discloses a LoRa wireless intelligent street lamp illumination control system, and the system employs the LoRa wireless technology based on 433 / 868 / 915MHz bands, the cloud technology and the big database technology for remote measurement and control, can achieve the independent control of each of street lamps with 1-4 heads, can carry out the electric energy metering and electricity prepayment control, carries out the grouped control of street lamps of different roads, can perform energy-saving operation for environment sensing, and carries out the fault detection, fault positioning and alarm in real time. The system can be widely used for an expressway, an ordinary highway and a road. The system can precisely achieve the control of the switching and light adjustment of each lamp, and also can carry out the grouped control. The system can intelligently carry out the turning-on, turning-off and light adjustment operations under the conditions of default parameters, and has the functions of fault alarm, fault positioning, management information pushing, environment sensing, electric energy statistics, electric charge prepayment, local equipment monitoring, remote equipment monitoring, and mobile equipment monitoring.

The invention discloses an LED lamp-based energy-saving control method in the range from initial illumination to specific illumination. The standard illuminance set by the LED lamp is taken as a reference standard, and before the illumination of the LED lamp is attenuated to the standard illumination, current control adjustment is conducted for at least one time; after adjustment, the illumination of the LED lamp is less than the maximal illumination of the LED lamp at the moment and is not less than the standard illumination within the remaining life cycle. On the basis of the existing method which takes a maintenance factor into consideration, the method designs a brand new energy-saving method by intelligent control and through current adjustment. By the method, the energy-saving rate of LED lamp products is greatly increased under the condition of not reducing the life, the reliability or any other parameter of the products.

The invention discloses a communication machine room temperature energy-saving control method based on equipment life factors. The energy-saving control method comprises the following steps of: equipment temperature collection: respectively collecting the temperature of various equipment in the machine room at a plurality of temperature collection time points in a current collection control period; life factor calculation: calculating the life factors of the various equipment in the machine room according to the collected temperature values and a designed life coefficient, and calculating out the life factor of the machine room according to the life factors of the equipment and a weighting coefficient; and machine room temperature control: comparing the machine room life factor with at least one preset life factor threshold value, judging whether a preset refrigeration condition is met by the machine room factor according to the comparison result, and if so, starting corresponding refrigeration equipment to refrigerate in a next collection control period. The invention also discloses a corresponding communication machine room temperature energy-saving control system based on the equipment life factor. The energy-saving control method and the energy-saving control system have the advantages of great improvement the energy-saving rate of the temperature of the communication equipment, accurate energy-saving control, elongation of the equipment service life and reduction of the equipment failure rate.

The invention belongs to the technical field of energy management, and discloses a railway station building construction equipment monitoring and energy management system, a program and a storage medium. The railway station building construction equipment monitoring and energy management system comprises a construction equipment monitoring and energy management system host, a central air conditioner energy-saving control subsystem, a fresh air system, an intelligent illumination control subsystem, an electromechanical equipment acquisition control subsystem, an environmental data acquisition subsystem, an energy data acquisition subsystem, a regional equipment control cabinet, various sensors and acquisition devices. The construction equipment monitoring and energy management system host comprises a central air conditioner acquisition control module, a fresh air system acquisition control module, an intelligent illumination acquisition control module, an electromechanical equipment acquisition control module, an environment data acquisition module, an energy data acquisition module, a passenger station brain data interface module and other system data modules. The system has the functions of autonomous learning and promotion, and the innovative technical level and economic indexes reach the domestic leading level.

A submersible servodrive system comprises a pump. The system is characterized in that the pump is connected with a servo motor system by a protector; a ground control device is connected with ground power supply by a cable; the cable is connected with the servo motor system; the ground power supply is controlled by the ground control device to supply power to a servo motor and the pump; the servo motor system comprises the servo motor and a servo controller; a motor shaft of the servo motor is provided with a position detection device which outputs the position signal detected by the position detection device to the servo controller; the servo controller controls the servo motor to run; and the position detection device is fixed on the servo controller by a sealing device. The system has high power factor, high energy saving rate and high flexibility, further saves power, can realize flexible production and reduces the operation cost. When being started, a pumping unit can provide large torque, combine with soft start and reduce the power of a matching motor of the pumping unit.

The invention relates to a nano-composite current-conducting electric heating film and a production method thereof, and belongs to the technical field of materials. The nano-composite current-conducting electric heating film comprises a substrate layer, a current conducting layer is arranged on the substrate layer, a conductive heating layer is arranged on the current conducting layer, and each of two upper ends of the conductive heating layer is provided with an electrode. The nano current conducting layer and the conductive heating layer are introduced to be composited to obtain a nano conductive heating unit, the entire surface serves as one conductive heating unit, the current flows evenly on the entire surface, and poor uniformity of the film due to the printing technology and problems of printing ink is avoided; effect of punching and cutting in any place on the surface without affect conduction and heating is achieved.

The invention discloses an addition agent for improving the performance of heavy oil, which comprises raw materials by weight percentage: 25-38% of naphthenate, 10-20% of ferrocene solution, 10-20% of dibenzoyl peroxide solution, 12-25% of surface active agent, and the balance of cosolvent, wherein the ferrocene solution is the dimethylbenzene solution or methylbenzene solution of ferrocene; and the dibenzoyl peroxide solution is the dimethylbenzene solution or methylbenzene solution of the dibenzoyl peroxide solution. The addition agent can obviously improve the combustion efficiency and performance of the heavy oil; the energy-saving rate reaches up to 25%-45%; the addition agent can effectively reduce precipitates generated by the heavy oil combustion and prevents the adherence of slag; simultaneously, the use of the addition agent can reduce the discharge of pollutants and reduces the smoke intensity and smoke; in addition, the addition agent can effectively eliminate and neutralize corrosive ingredients generated in the combustion process or existing in the heavy oil and plays a role in the obvious anti-corrosion.

The invention provides a double synchronizing clutch and a planetary gear coupling double-motor power system. The double synchronizing clutch comprises an inner synchronizer and an outer synchronizer which are arranged inside and outside in the radial direction, a first spline hub of the outer synchronizer and a second spline hub of the inner synchronizer are mechanically connected into a spline hub of an integrated structure, a channel is formed in the spline hub, an axial protrusion is arranged on a combining sleeve of the inner synchronizer, penetrates through the channel in the spline hub and is connected with a shifting fork ring groove of the inner synchronizer, an operation mechanism of the inner synchronizer is movably connected with the shifting fork ring groove of the inner synchronizer, an operation mechanism of the outer synchronizer is movably connected with a combining sleeve of the outer synchronizer, a combination tooth ring of the inner synchronizer is connected with a first input / output end, a combination tooth ring of the outer synchronizer is connected with a second input / output end, and the spline hub is connected with a third output / input end. The double synchronizing clutch and the planetary gear coupling double-motor power system have the stepless speed change function and the like, and have the advantage of meeting all-region and multipurpose application requirements.

The invention provides a PTC semiconductor electric boiler and a heating system. The PTC semiconductor electric boiler is provided with a boiler shell, a boiler heating portion located in the boiler shell and an electric control portion located in the boiler shell and used for controlling the boiler heating portion. The boiler heating portion comprises a main pipe water feeding bar, water feeding connection pipes, PTC semiconductor heating components, water discharging connection pipes and a main pipe water discharging bar. The water feeding connection pipes communicate with the pipe wall of the main pipe water feeding bar, and the water discharging connection pipes communicate with the pipe wall of the main pipe water discharging bar. The PTC semiconductor heating components comprise water storage pipes and PTC semiconductor heating pipes, and the water storage pipes sleeve the interior of the PTC semiconductor heating pipes. The PTC semiconductor heating pipes are adopted for heating water in the PTC semiconductor electric boiler, and the water can be thoroughly separated from the PTC semiconductor heating pipes, so that water electricity separation is achieved, the problem of safety hazards is avoided, and safety performance is high.

The invention relates to a novel solid adsorption dehumidification device belonging to the field of heat energy utilization and air conditioner refrigeration. The novel solid adsorption dehumidification device comprises a vertical air duct, a dehumidification base, a heat source and a cold source, wherein the dehumidification base, the heat source and the cold source are arranged in the vertical air duct; the dehumidification base comprises a plurality of longitudinally arrayed finned pipes, a plurality of flat plate type fins and silica gel adsorbates, wherein the plurality of flat plate type fins longitudinally contact with the finned pipes, and the silica gel adsorbates are bonded on the surface of the dehumidification base; the heat source is connected with the dehumidification base to form a hot-water loop; the cold source is connected with the dehumidification base to form a cold water loop; and the hot-water loop and the cold water loop alternately work through the on-off switching of a valve. The invention has the advantages of high heat transfer efficiency, simple structure, easy marketization and high energy-saving rate and can use the solar energy and the geothermal energy; and in addition, natural gas extraction is adopted in a regenerating process, therefore power is saved.

The invention discloses an absorption heat pump system and a circulation method thereof. The absorption heat pump system comprises a first-class absorption heat pump subsystem. The first-class absorption heat pump subsystem comprises an evaporator, an absorber and a first generator. Supply steam of the heat application process is used as a driving heat source of the first-class absorption heat pump subsystem. One part of technological waste heat of the heat application process is used as an evaporation heat source. The absorption heat pump system further comprises a second generator and a second condenser. The second generator, the second condenser, the evaporator and the absorber constitute a second-class absorption heat pump subsystem. The other part of technological waste heat is used as a driving heat source of the second-class absorption heat pump subsystem. Steam generated by the absorption heat pump system is used as technological steam to be output to the heat application process. The absorption heat pump system can effectively enable all the technological waste heat to be used for producing the technological steam. Accordingly, the energy saving rate and economic benefits of the heat application process can be remarkably increased.

The invention discloses a permanent magnet speed regulation system of power plant auxiliary equipment. The system comprises a prime mover, a permanent magnet speed regulation module, the power plant auxiliary equipment, a first non-contact velocity transducer, a second non-contact velocity transducer, an auxiliary equipment state monitoring sensor, an air gap adjusting mechanism, a TMS320F28335 intelligent controller, a GPRS wireless communication module, and an HMI touch display screen. According to the system, based on the permanent magnet speed regulation theory with variable rotating speed and torque, the gap between a conductor rotor and a permanent magnet rotor of the permanent magnet speed regulation module is changed through the air gap adjusting mechanism with the combination of the modern intelligent controller and the non-contact speed detection sensor technology, and the non-contact power plant auxiliary equipment permanent magnet speed regulation system is realized. According to the system, the effects of energy saving and consumption reduction are good, the stalling accidents of auxiliary equipment units of the power plant caused by insufficient low-voltage ride-through capability of a frequency converter can be avoided, and system vibration, noise, and electromagnetic harmonic pollution can be reduced to a certain extent.

The invention relates to the technical field of urban rail transit regenerative braking energy utilization, and discloses a ground battery and super capacitor hybrid energy storage system and a management method thereof. The method is characterized by comprising the following steps of 1, adopting HESS for urban rail transit traction network energy flow, 2, putting forward a control method based ona parallel double-loop structure, 3, in the control method, considering giving of a voltage outer loop instruction value in the charging process, 4, braking the train, and 5, starting an energy storage element. The invention discloses a ground battery and super capacitor hybrid energy storage system and a management method thereof. Based on the defects of an existing typical urban rail ground hybrid energy storage device control structure, a control method based on a parallel double-loop structure is put forward, starting of braking resistance and air braking can be effectively reduced, and therefore energy loss and brake shoe loss are reduced, and the energy-saving rate of an energy storage device is increased.

The invention relates to a wind and light complementation integration base station, which comprises a wind power generation system, a solar energy power generation system, a container base station box body, a lightning rod, a foundation seat earth anchor and a thermal-insulation trim, wherein the container base station box body is arranged on the foundation seat earth anchor; the solar energy power generation system and the lighting rod are installed above the container base station box body; the thermal-insulation trim is arranged on the inner side of the container base station box body and is used for the thermal insulation; and the wind power generation system is installed behind the container base station box body and is connected with the container base station box body by a diagonal member. Compared with the prior art, the wind and light complementation integration base station disclosed by the invention is characterized in that the solar energy and the wind energy are comprehensively utilized, dependency on the mains supply is reduced, and the wind and light complementation integration base station has the advantages of energy saving, emission reduction and high integration level, is compact and reliable and is installed in a modularization mode.

The invention provides a light heat insulation and decoration integrated building board, comprising a light heat insulation basic layer (1), an inorganic strong sticking layer (2), a gridding cloth (3), an inorganic composite water-resisting surface glue layer (4), a cement glass fiber cloth (5), and a veneer decorative layer (6). The light heat insulation basic layer (1) and the gridding cloth (3) are bonded by the inorganic strong sticking layer (2), and the gridding cloth (3) and the cement glass fiber cloth (5) are bonded through the inorganic composite water-resisting surface glue layer (4). The veneer decorative layer (6) is coated on the surface of the cement glass fiber cloth (5). The building boards are installed by finished products, working procedures are simplified, operation is in a dry method, installation is simple and direct, construction period is shortened, and quality is easy to control. The building board has high security, high decorative property, super weatherability, high cost performance, and is self-cleaning and antiseptic, a veneer is durable and beautiful. The building board is light in weight and is anti-seismic, fireproof and flame retarding, and the building board insulates heat and saves energy, isolates sound and heat, and is crack resisting and waterproof, and fractional energy savings reaches up to 70%.

The invention discloses a multi-purpose efficient energy-saving smokeless steamer. The steamer comprises a pot body, a heat insulation cover and a heat seat, wherein the pot body comprises a main pot and a secondary pot, the main port and the secondary pot form a heat interlayer, the main pot comprises a main pot opening, a main pot edge and a main pot bottom, the secondary pot arranged on the outside of the main pot comprises an upper pot edge, a heat net, a lower pot edge, a heat bottom and a pot handle, the upper end of the upper pot edge and the upper end of the main pot edge are attached tightly, the bottom end of the upper pot edge and the upper end of the lower pot edge are connected, the upper end of the lower pot edge and the bottom end of the upper pot edge are connected, the lower end of the lower pot edge and the edge of the heat bottom are connected, the inner side of the lower pot edge and the outer side of the main pot edge form an attached interlayer, the heat net is arranged inside the lower pot edge, the heat bottom is provided with a plurality of fine through holes or recessed holes and is attached to the heat pot bottom, the heat insulation cover comprises a reducing valve, a handle, a condensing ring, a heat insulation layer, a sealing edge and a perspective hole, and an energy-saving seat comprises an outer sleeve, an air port, a heat ring and a heat slot. The steamer is ingenious in design, excellent in performance, multi-functional, wide in application, convenient, efficient, free from smoke, anti-sticking, energy-saving, environment-friendly, durable and high in performance price ratio.

The invention discloses an integrated afterheat hot water burner assembly, which consists of an ignition device, a burner and a hearth, wherein the burner comprises a gas inlet pipe, a gas anti-blocking partition cap, a gas pre-heating partition burning tray, an inner wind sleeve and an outer wind sleeve; the hearth is a sandwich-type hearth and comprises an inner wall, an outer wall and a gas cavity clamped between the inner wall and the outer wall; a metal water pipe is arranged in the gas cavity; the metal water pipe is spirally wound on the outer side of the inner wall; the metal water pipe tightly contacts the inner wall and the outer wall; a water inlet end of the metal water pipe is communicated with a water inlet pipe at the outer side of the hearth; the water outlet end of the metal water pipe is communicated with a water outlet pipe at the outer side of the hearth. According to the invention, not only is waste of heat effectively prevented, but also the kept heat is heated through the inner and outer wind sleeves to enter into the air inside the burner; high-temperature exhaust gas also enters into the gas cavity through a discharge hole at the upper end of the inner wall of the hearth and carries out heat exchange with water in the metal water pipe, so the heating efficiency of the burner is improved, thereby saving the energy source and improving the service life of the hearth.

A submersible servodrive system comprises a pump and a servo motor system connected with the pump. The system is characterized in that a ground control device is connected with ground power supply by a cable; the cable is connected with the servo motor system; the ground power supply is controlled by the ground control device to supply power to a servo motor and the pump; the servo motor system comprises the servo motor and a servo controller; a motor shaft of the servo motor is provided with a photoelectric coder at the tail; the head of the motor shaft with the photoelectric coder is sealed and stretches into a shell of the servo controller; the photoelectric coder outputs the detected position signal to the servo controller; and the servo controller controls the servo motor to run. The system has high power factor, high energy saving rate and high flexibility, further saves power, can realize flexible production and reduces the operation cost. When being started, a pumping unit can provide large torque, combine with soft start and reduce the power of a matching motor of the pumping unit.