76results about How to "Ensure water balance" patented technology

The invention discloses a wet-type electric precipitator and an electric precipitation desulfurization device comprising the same. The wet-type electric precipitator comprises anode plates, cathode rays, two cathode ray suspension frames, an insulator chamber and a cleaning water pipe, wherein multiple bending plates which extend along the vertical direction and are arranged in parallel are used as the anode plates; the multiple cathode rays are suspended between two adjacent bending plates and are bent in tendency the same as that of the bending plates; multiple barbs are fixed on each cathode ray at intervals; the two cathode ray suspension frames are respectively positioned above and below the anode plates and are used for fixing the top ends and bottom ends of the cathode rays; the insulator chamber is used for fixing the ends of the two cathode ray suspension frames; and the cleaning water pipe is arranged above the anode plates. The wet-type electric precipitator disclosed by the invention is used in the desulfurization device, is arranged between two-stage demisting layers in a desulfurization tower and is used for performing fine dust removal on flue gas subjected to primary demisting.

The invention relates to a membrane electrode of a fuel cell, which comprises an anode gas diffusing layer, an anode catalyzing layer, a proton exchange membrane, a cathode catalyzing layer, and a cathode gas diffusing layer. The gas diffusing layers comprise a conductive carrier as well as a conductive agent and a binding agent carried by the conductive carrier, wherein the binding agent in the anode gas diffusing layer is a hydrophilic binding agent. The membrane electrode of the fuel cell provided by the invention has good effect of self-humidifying. When the fuel cell manufactured by adopting the membrane electrode in the invention works in a large current density, the output power of the cell is high.

The invention relates to a cathode side gas humidity adjusting system and method for a proton exchange membrane fuel cell, and the system comprises an air filter, an air compressor, an intercooler, anair humidifier, a fuel cell stack, an exhaust back pressure valve, a tail gas processor, a humidity regulator, a three-way valve, and a fuel cell control unit. An outlet of the fuel cell stack is connected with an inlet of the humidity regulator, and the humidity regulator is connected with the air humidifier. The air humidifier is connected with the three-way valve, and the fuel cell control unit is connected with a water content sensor and a humidity regulator in the fuel cell stack. The humidity of air entering the fuel cell stack can be automatically adjusted according to the actual working requirements of the fuel cell stack, the phenomenon that the interior of the stack is too dry or too wet is avoided, the water balance in the stack is maintained, the output performance of the fuelcell is effectively improved, the operation stability of the fuel cell is guaranteed, and the reliability and durability of the stack are improved.

The invention relates to a reagent for processing trace whole blood and an application thereof. The reagent comprises the following components: a buffer solution, an osmotic pressure retaining agent, a protective agent, an anticoagulant and a preservative. By adopting the reagent, a trace whole blood sample can be diluted by optional times (2-1000 times) and treated to obtain dilution of serum or plasma without damaging the sample and causing erythrocyte hematolysis.

The invention provides an anti-dizziness chair capable of being automatically balanced which is installed on a vehicle. The anti-dizziness chair capable of being automatically balanced comprises a seat, a stable platform and a vibration absorber. The anti-dizziness chair has the characteristics that: the vibration absorber comprises a base which can be fixed with the vehicle, a semicircular ring which is fixed with the stable platform, horizontal and vertical gyro stabilizers which are installed under the stable platform, an outer circular ring which is connected with the base through a magnet vibration absorber, and inner circular rings which are provided with two pairs of concentric holes with mutually vertical axes along ring centers, wherein the outer circular ring which is out of the inner circular rings is hinged with the inner circular rings in one pair of the concentric holes and the semicircular ring which is under the inner circular rings is hinged with the inner circular rings in the other pair of the concentric holes. With the adoption of the anti-dizziness chair provided by the invention, gestures can be automatically adjusted when the vehicle sways from left to right and from front to back and the balance can be kept; when the vehicle bumps or fluctuates, the anti-dizziness chair also can be freely moved to carry out amplitude decreasing or amplitude increasing, so that the conditions that passengers feel sick, vomit, feel uncomfortable and the like can be relieved, and carsickness, seasickness and airsickness can be reduced.

The invention discloses a flue gas desulfurization method and a flue gas desulfurization system; the flue gas desulfurization method comprises the steps that: flue gas including SO2 is in countercurrent contact with barren liquor of absorption liquid to form rich liquor, after temperature of the rich liquor raises, the rich liquor is in countercurrent contact with secondary steam in a desorber to complete desorbing and regeneration, the steam including the SO2 exhausted from the top of the tower forms a regenerative primary steam under the injection effect of fresh primary steam to serve as a hot source of a reboiler for heating the barren liquor in the desorber, and then secondary steam is generated for continuously steam stripping SO2. The flue gas desulfurization comprises an absorption tower, a rich liquor pre-heater, a rich-barren liquor heat exchanger and a desorber, wherein the desorber is connected to a steam coupling regeneration device and a condenser respectively, and the steam coupling regeneration device is connected to a reboiler that is also connected to the desorber. The flue gas desulfurization method and system provided by the invention has the advantages of being capable of improving temperature of rich liquor of absorption liquid entering the desorber, achieving circular steam balance, saving steam consumption and reducing thermal load of condenser.

The invention discloses moisturizing health care fabric. The fabric comprises aloe fibers, silk fibers, cotton fibers and bamboo fibers. The moisturizing health care fabric is formed by interweaving warp yarn and weft yarn, the warp yarn is formed by blending the aloe fibers and the cotton fibers, the weft yarn is formed by blending the silk fibers and the bamboo fibers, the weight accounted by the warp yarn in the moisturizing health care fabric ranges from 46.5 percent to 53 percent, and the weight accounted by the weft yarn in the moisturizing health care fabric ranges from 47 percent to 53.5 percent. In this way, the moisturizing health care fabric is formed by blending a plurality of high-quality fibers, the manufactured fabric has the moisturizing and breathability characteristics, the skin is maintained, the water balance of cells is kept, bacterium resisting and deodorization effects are achieved, and the fabric is suitable for being manufactured into underwear for wearing.

The invention discloses a judgment method and a control system for the content of water generated by a fuel cell. The judgment method comprises the steps of: detecting the pressure values of an air inlet and an air outlet of a fuel cell stack, and obtaining the characterization value of the water content of the stack through calculation; setting a water content range for normal work of a fuel cell according to parameters of the used fuel cell, and judging a characterization value of the water content according to the water content range; and adjusting the working states of a cooling fan and an air compressor to enter a drying mode, or adjusting the working states of the cooling fan and the air compressor to enter a humidifying mode. According to the method, the drying degree of a proton exchange membrane can be accurately judged in real time in the running process of the fuel cells, the condition that the membrane is dry or flooded can be treated, water balance of the proton exchange membrane is guaranteed, and therefore high-efficiency running of the fuel cell is guaranteed.

The invention discloses a safe and convenient barrier-free passing balance vehicle. The balance vehicle can adapt to various terrains such as flat grounds, stairways, bumpy roads and the like. The balance vehicle is mainly composed of four controllable rotating composite wheels and a vertical balance vehicle body frame, wherein composite wheels comprise walking wheels, tracks and Mecanum wheels; the walking wheels are for normal roads; the combination of the walking wheels and the tracks is adopted on uneven roads; and the combination of the Mecanum wheels and the tracks is adopted on stairways; and a vehicle body can be constantly kept vertically balanced via the vehicle body frame on the basis of the changing principle of interiors angles of parallelogram. The vehicle can be independently operated; before walking, proper wheel combinations and corresponding inclination angles of the composite wheels are selected in accordance with road conditions; during walking, the vehicle can be automatically kept balanced and can be automatically adjusted in accordance with road conditions; therefore, the vehicle is stable and comfortable in running; and the vehicle, in particular in climbingstairs, is simple to operate, and climbing directions can be rapidly changed, so that continuous, stable and rapid climbing can be achieved.

The invention provides a dehydration method for desorption gas used in desulphurization of flue gas. The method comprises the following steps: carrying out primary condensation and secondary condensation on desorption gas which has been desorbed from a desorption system so as to obtain first condensate liquid, second condensate liquid and desorption gas containing vapor, sulfur dioxide gas and a desulfurizer; delivering the resultant desorption gas into a gas-liquid separation device for gas-liquid separation so as to generate liquid and acidic gas containing sulfur dioxide; delivering the resultant second condensate liquid and liquid generated in gas-liquid separation into a suspension filter for filtration so as to remove impurities in the liquid and obtain a desulphurization solution containing saturated sulfurous acid and a small amount of desulfurizer; supplying the desorption system with the desulphurization solution. The method provided in the invention can effectively maintain water balance of the desorption system, utmostly reduces loss of sulfur dioxide, and further reduces energy consumption and the like of the desorption system.

The invention discloses a demister washing technology for ethylene spent caustic flue gas desulfurization. A demister washing spraying system is arranged below a chimney inside a desulfurizing tower so that dynamic washing spraying can be conducted on a demister. The demister washing spraying system and a main water charging system of a gas desulfurization system are in joint debugging and joint control. When the main water charging system of the desulfurizing tower is insufficient in capacity or breaks down, dynamic washing spraying is controlled to be conducted on the demister, meanwhile, water balance of the whole gas desulfurization system can be maintained in an auxiliary mode, and the liquid level at the bottom of the desulfurizing tower is controlled to be stabilized within a set height range. The invention further provides a demister washing device which is composed of a demister washing water spraying layer, a washing water main pipe and a control switch. By means of the demister washing technology for ethylene spent caustic flue gas desulfurization and the demister washing device thereof, the defects that the demister washing water spraying layers are numerous, and valves and nozzles are also numerous in a traditional desulfurization mode are overcome, the maintenance workload is small, water resources are saved, the demister washing system for ethylene spent caustic flue gas desulfurization is simpler and more practical, the long-period efficient operating requirement is met, and maintaining is more convenient.

This invention relates to proton exchange film fuel battery gas supply and cooling system in fuel battery technique field, which comprises outside axis wind motor and matched wind cover and imbedded open air guide tank, wherein, one set of battery is composed of two electrode boards with one as cathode board with A and B surface etched with air conductive tank in line shape; one side of electrode board passes other side with other as anode board with A surface etched with air conductive tank and with B surface etched with enclosed hydrogen air guide tank.

The invention relates to a neutralization apparatus for a nitric phosphate fertilizer production mother liquid ammonia neutralization process. The neutralization apparatus comprises a first segment neutralization device, a second segment neutralization device and a neutralization tail gas washing device, wherein the second segment neutralization device is a forced circulation tubular reactor, a flash evaporation separation chamber, a descending pipe, a circulation pump and a reaction pipe are sequentially communicated to form a reaction system having an annular closed structure, and reaction system is provided for solving phenomena of material agglomeration and scab caused by increased mother liquid ammonia neutralization slurry viscosity during the nitric phosphate fertilizer production process. According to the neutralization apparatus, the multi-point material feeding structure is arranged, and the forced circulation tubular reaction is performed, such that a viscous region of the neutralization process is avoided, the material is uniformly mixed, the slurry has good fluidity, and NH3 loss is low.

The invention discloses a fuel cell engine exhaust silencer, comprising a first cavity and a second cavity which are each internally provided with two partitions, and three chambers divided by the partitions, wherein a first chamber is externally connected with an intake pipe, a third chamber is connected with one end of a connecting pipe, a fourth chamber is connected with the other end of the connecting pipe, a sixth chamber is externally connected with an exhaust pipe, the junctions between the chambers and the intake pipe, the exhaust pipe and the connecting pipe have sharply changed surfaces, a first partition between the first, third chambers and the second chamber is provided with a plurality of micropores, and a third partition between the fourth, sixth chambers and the fifth chamber is provided with a plurality of micropores. The complex exhaust silencer according to the invention reduces the exhaust noise from the fuel cell engine by means of the combination of resistant silencing technology with micropore silencing technology. In addition, the exhaust silencer can effectively separate water contained in the exhaust gas from the exhaust gas and recover the separated water effectually through the design of corresponding recovery channels, thereby guaranteeing water balance of the fuel cell engine.

The present invention is the decomposed liquid recovering process for heavy sodium carbonate production process. The decomposed liquid, which is produced in the heavy sodium carbonate production process including direct calcinations of wet heavy sodium carbonate with steam as reaction medium, washing and hydration, is processed via CO2 carbonating process, cooling separation process or evaporation process to obtain sodium carbonate product, or made to enter the sodium carbonate producing mother liquid system to obtain sodium carbonate product. The present invention can avoid environmental pollution, recover Na2CO3, NaHCO3 and NaCl and raise the yield of Na2CO3. In addition, the present invention can also make best use of water produced during the production process.

The invention discloses a processing method of a cobalt carbonate mother liquor in cobalt powder precursor cobalt carbonate preparation process. The method comprises the steps that countercurrent extraction is conducted on a saponified organic phase and the cobalt carbonate mother liquor to obtain a loaded organic phase and raffinate, stripping is conducted on the loaded organic phase by using hydrochloric acid to obtain a blank organic phase and a cobalt chloride solution, the blank organic phase is saponified by the using the cobalt carbonate mother liquor to obtain a saponified organic phase, the saponified organic phase is returned to a countercurrent extraction procedure to be recycled; (2), evaporating crystallization is conducted on at least part of the raffinate obtained in step (1) to obtain ammonium chloride and condensed water. According to the method, an existing treatment method in which ammonia water is directly replenished is no longer adopted by the blank organic phaseafter hydrochloric acid stripping is conducted, saponification is conducted by adopting the cobalt carbonate mother liquor to be used continuously, the using amount of the ammonia water is reduced, the evaporation amount of the evaporating crystallization procedure is reduced, the consumption of raw and auxiliary materials is reduced, the energy consumption is reduced, and the cobalt chloride solution enters a cobalt carbonate synthesis procedure.

The invention relates to a side slope ecological protection frame structure and a construction method thereof, and belongs to the technical field of side slope treatment. According to the technical scheme of the side slope ecological protection frame structure, the side slope ecological protection frame structure is characterized in that the side slope ecological protection frame structure comprises multiple frame longitudinal beams arranged on a side slope and parallel to one another, frame transvers beams arranged between the adjacent frame longitudinal beams to form frame cells, multiple vertical shafts formed in the side slope frame cells in the inclination direction of the side slope, overflow pipes connected between the adjacent vertical shafts, and a water drainage channel arrangedat the bottom of the side slope and connected with the overflow pipes; the vertical shafts are close to the edges of the bottoms of the frame cells; multiple water drainage grooves connected with thevertical shafts are formed in the side slope; a water filer plate is installed on the top of each vertical shaft; water drainage holes are formed in the bearing face of each water filter plate; and aspray device used for conducting spraying on plants in the corresponding frame cell is further arranged on each vertical shaft. When the protection frame structure is used, requirements of the plantson the ecological side slope for water can be effectively balanced, cyclic utilization of water resources is promoted, and the situation that water and soil loss is caused to the side slope is reduced.

The invention relates to a vacuum cavity electrostatic chuck adjusting device which comprises an electrostatic chuck supporting structure, a base and a height adjusting structure. The electrostatic chuck supporting structure is arranged on the lower side of an electrostatic chuck and used for supporting the electrostatic chuck. The base is fixed to a lower cover of a vacuum cavity. The height adjusting structure is connected with the base and the electrostatic chuck supporting structure and is used for adjusting the height of the electrostatic chuck, and the levelness of the electrostatic chuck can be guaranteed while the height is adjusted. By means of the electrostatic chuck adjusting device, vertical motion of the electrostatic chuck can be achieved, the horizontal balance of the electrostatic chuck in the motion process can be guaranteed, and meanwhile electrostatic chuck and chip temperature adjustment can be achieved.

The invention relates to a pair of synchronous anti-slip balanced lifting clamp forceps. The synchronous anti-slip balanced lifting clamp forceps comprise a lifting beam, a lifting hole, a balance shaft beam I, stop nuts, connecting rods I, connecting rods II, studs, front clamps, rear clamps, rubber pads, a balance shaft beam II and a synchronizing bridge shaft. When the synchronous anti-slip balanced lifting clamp forceps are tried, a lifting hook of a lifting device passes through the lifting hole, a force bearing point of an arch center of the lifting hole is just in contact with the lifting hook, and the borne acting force is radiated to each point on the bottom side of the arched lifting beam through the lifting hole, so that the uniform stressing is guaranteed; the lengths of the balance shaft beam I and the balance shaft beam II are accordant, so that the horizontal balance of objects during the lifting is guaranteed; by virtue of the rubber pads arranged in working regions of clamps of forceps heads, the friction force is increased, a procedure for using a steel wire rope is omitted, and the probability that the objects fall when being lifted is reduced; by virtue of the synchronizing bridge shaft welded to the front clamps, the frequent operation time of workers caused due to the asynchronization of the front clamps and the rear clamps is shortened when the objects are lifted up or down.

A flow mixer for the heat radiating unit arranged under floor for heating purpose is arranged between water inlet trunk-water splitter and water return trunk-water collector. The throttle valve, mixing cut-off valve, temp sensing valve, main controller, water return pipe, circulating pump and temp sensor are arranged in the flow mixer. After the heat of heating medium is fully released in the heat radiating unit, it is returned back to heater for heating it. Its advnatages are simple structure, high utilization rate of heat, and low cost.

The invention disclose a deep dehydration closed acid scrubbing purification process, belongs to the technical field of chemical production, and is suitable for the gas purification section for producing sulfuric acid from metallurgical off-gas containing SO2 of regenerated lead, molybdenum concentrates and the like. The metallurgical off-gas of the regenerated lead, the molybdenum concentrates and the like is subjected to dry dedusting, and the flue gas flowing out of dry dedusting equipment is processed by a first-level dynamic wave scrubber, a gas scrubbing tower and a second-level dynamicwave scrubber, is cooled and dehydrated, and is processed by an electrostatic mist precipitator to remove water mist, water drops, acid mist, dust and the like, and then goes to the dry absorption section in the production of the sulfuric acid. The water in a furnace gas of the sulfuric acid production and purification section is deeply cooled, is turned from the gas state to the liquid state, andis discharged out of a system along with the dilute acid, the water balance of an acid making system is guaranteed, and the acid making system produces the concentrated sulfuric acid, the fuming acidor the refined sulfuric acid.

The invention discloses a treatment method of chlorine-containing wastewater in a rare earth smelting technical process. The method comprises the following steps of firstly converting the chlorine-containing wastewater generated in the rare earth smelting process into a sodium chloride-containing solution through adding lime and sodium sulfate, then, adding hydrochloric acid used in the rare earthsmelting technical process or introducing a HCl gas into the sodium chloride-containing solution, by utilizing a common ion effect generated by a chlorine ion, impelling sodium chloride in an obtained mixture to precipitate and separate out, or adding sodium carbonate or / and sodium hydrogen carbonate, by utilizing the common ion effect generated by a sodium ion, impelling the sodium chloride in an another obtained mixture to precipitate and separate out, and filtering to obtain a sodium chloride crystal. Without evaporation concentration, chlorine in the chlorine-containing wastewater can beseparated. The method has the advantages of being clean, environment-friendly, economical and efficient, and the like, and is suitable for the industrial application of the treatment of the chlorine-containing wastewater in the rare earth smelting technical process.

The invention discloses a method for purifying solid waste in a sea cucumber factory-like seedling protecting-cultivating pool by utilization of clam worms. The method is characterized by including the following steps: a substrate is laid in the sea cucumber factory-like seedling protecting-cultivating pool, the substrate is fine sand with the diameter of 0.1mm-1.0mm, and the thickness of the laying is 10-20cm; clam worm offspring seeds with specification of 1-3cm / one seed are put in the substrate; compound microorganisms are inoculated in the cultivating pool and effective microorganism (EM) bacteria in sea water, the cell concentration is that the number of beneficial microorganisms contained per milliliter is larger than or equal to one billion, and the inoculation density is 5pmm; at intervals of 1-3 weeks, the ammonia nitrogen density of the water body in the cultivating pool is measured, if the ammonia nitrogen density is larger than 0.1mg / L, compound microorganisms are inoculated in the whole cultivating pool by even splashing in a scooping mode, and the inoculation density is 3-10ppm; every mouth, the ammonia nitrogen density of interstitial water in the fine sand at the bottom of the cultivating pool is measured, if the ammonia nitrogen density of the interstitial water is larger than 1mg / L, water in the pool is drained, the pool is exposed, and the substrate in the pool is exposed for 5-7 days in a dried mode; and the clam worms are harvested by utilization of labor digging and catching.

The invention discloses a condensing type gas-fired boiler heat exchanger. The condensing type gas-fired boiler heat exchanger comprises a heat exchanger body, wherein a combustion chamber and a smoke exhausting chamber which communicate with each other are formed in the heat exchanger body; condensing water channels which are integrated with the heat exchanger body is arranged between the combustion chamber and the smoke exhausting chamber; heat dissipating bumps are integrally arranged or fixed on the outer surfaces of the condensing water channels; and the closer to the combustion chamber, the more arrangement density of the condensing water channels increases. According to the condensing type gas-fired boiler heat exchanger, the heat dissipating bumps are arranged on the outer surface of the heat exchanger, so that the heat exchanging area is increased, and the condensing effect of the heat exchanger to smoke is improved. The invention also discloses alloy for the heat exchanger. The alloy comprises the following components in percentage by mass: 8-11% of silicon, 0.2-0.45% of magnesium, not greater than 0.2% of iron, 0.02-0.14% of titanium, 0.01-0.03% of strontium, and the balance aluminum. The mechanical performance of manufactured condensing heat exchanger entity reaches international level; the tensile strength and the yield strength of the condensing heat exchanger are equal to those of an imported heat exchanger; and the ductility and the impact resistance are beyond those of the imported heat exchanger.

The invention relates to a water quantity balancing and water quality improvement system for a garden landscape water body. The system comprises a rain sewage interception unit, an underground water storage unit, an artificial wetland purification unit and an ecological clear water recycling unit. The rain sewage interception unit conveys intercepted rain sewage to the underground water storage unit for storage, and meanwhile water in the rain sewage interception unit is conveyed to the constructed wetland purification unit for purification. The underground water storage unit conveys rain sewage to the constructed wetland purification unit for purification, and ecological clear water obtained after purification treatment is conveyed to the ecological clear water recycling unit for use. Rainwater is intercepted through constructed wetland treatment, and pollutants entering the landscape water body are reduced from the source; effluent of the constructed wetland can be recycled in the garden, so that the water balance of the whole garden water system is guaranteed, and the trouble of frequent water supplementation is avoided; the underground water storage unit can be used for storingwater for buffering, and rainwater is collected for treatment in rainy days.

The present invention provides a method for decomposing phenol sodium salt by using carbon dioxide. The method includes a primary decomposition step, namely a step of subjecting an aqueous solution ofthe phenol sodium salt and gas containing carbon dioxide to a countercurrent contact reaction, and then performing separation to obtain primary crude phenol and a primary water phase containing sodium bicarbonate; a secondary decomposition step, namely a step of subjecting a mixture obtained by mixing the primary crude phenol and water and gas containing carbon dioxide to a countercurrent contactreaction, and then performing separation to obtain a crude phenol product and a secondary water phase containing sodium bicarbonate. Through generating the water phase containing sodium bicarbonate,controlling the pH value of the water phase and mixing the primary crude phenol and water for secondary decomposition, a higher phenol sodium salt decomposition rate and a high crude phenol content can be achieved.

The invention relates to a deep soil various sensor embedding device. The deep soil various sensor embedding device comprises a support. The support comprises a support plate and a bottom round plate.The support plate is perpendicularly fixed to one side of the bottom round plate to form an L-shaped structure. The bottom round plate is provided with a sensor protection box. The support plate is provided with a plurality of sensor fixing assemblies sequentially from bottom to top. The sensor protection box and the sensor fixing assemblies are used for arranging to-be-embedded sensors. A pulleylifting assembly used for driving the support to move up and down is arranged on the upper portion of the support plate. A balance assembly is arranged on the side opposite to the side, fixing the support plate, of the bottom round plate and is used for keeping horizontal balance of the support when the support moves up and down. Compared with the prior art, the deep soil various sensor embeddingdevice achieves measurement of various physical quantities of close depth of deep soil, embedding needs of the sensors of any depths are met, the drilling quantity is reduced substantially, and financial resources and labor are saved.

The invention discloses a self-cleaning flue gas dust removal system used for flue gas purification. The self-cleaning flue gas dust removal system comprises a self-cleaning area and a drop catcher, wherein the self-cleaning area is used for performing replacement dilution on gypsum droplets carried by flue gas and catching fine dust; the drop catcher is at least composed of a primary drop catcher and a second drop catcher and is used for removing drops in the flue gas; the self-cleaning area is arranged between a spraying area and the primary drop catcher and / or between the primary drop catcher and the second drop catcher; and the spraying area, the primary drop catcher and the second drop catcher are used for being arranged in the absorption tower from bottom to top. The dust removal efficiency is met, the arrangement is compact, the occupied land is reduced, the investment is saved, the operation and maintenance are convenient, and the energy consumption of the system is reduced.

The invention discloses a self-balancing foot stool of a unmanned rotorcraft, the unmanned rotorcraft and a method. The unmanned rotorcraft comprises a vehicle body and a flight control board installed on the vehicle body, an inertial sensor and a single chip microcomputer are installed on the flight control board, and the inertial sensor is used for obtaining an attitude angle. The self-balancing foot stool comprises: a shell; a driving module which is installed on the shell, receives a control signal of the single chip microcomputer and converts the control signal into a driving signal of the self-balancing foot stool; a telescopic module which is installed on the shell and used for receiving the driving signal and outputting the telescopic amount according to the driving signal; and a laser distance measuring sensor which is installed at the bottom end of the telescopic module and used for obtaining the relative distance between the laser distance measuring sensor and the ground and sending relative distance data to the single chip microcomputer, wherein the single-chip microcomputer receives the attitude angle and the relative distance, analyzes and processes the attitude angle and the relative distance, and outputs the control signal.