31results about How to "Avoid disturbing effect" patented technology

A LED structure, a lighting fixture and a method of providing white light illumination. The LED structure comprises a substrate; a light emitting area defined on the substrate as a cavity; a first type of light emitting semiconductor source with bactericidal characteristics mounted in the cavity; a second type of light emitting semiconductor source mounted in the cavity with ability to excite the wavelength conversion material to generate white light; and a wavelength conversion material layer formed on top of the light emitting semiconductor sources. The invention enables disinfection by a lighting source or a luminaire visibly apparent to human as a white light source that is neither harmful to a human nor creates discomfort.

The invention relates to the technical field of bridge deflection tests, in particular to a bridge loading test deflection testing instrument. The technical scheme is that the bridge loading test deflection testing instrument comprises an instrument tank box and a leveling instrument which is arranged on the top face of the instrument tank body and used for measuring the levelness of the top face of the instrument tank body, and side face opening holes are formed in the side faces of the tank body. Three springs are fixedly hung on the upper portion of the tank body, a testing platform is connected at the lower ends of the springs, a testing instrument support is fixedly arranged above the testing platform, and the deflection testing instrument is fixedly arranged on the testing instrument support. A turn buckle which is used for adjusting the lengths of the springs before a deflection test is hung below the testing platform. The upper end of a deflection testing rope is fixedly arranged at the lower end of the turn buckle, and the lower end of the deflection testing rope is connected with a counterweight block placed on the ground. A large hang ring is arranged on the top face of the outer portion of the tank body. The bridge loading test deflection testing instrument is reasonable in structural design, convenient to manufacture, mount and arrange, high in deflection test precision, capable of effectively solving the problems that labor and materials are consumed, working at heights is needed, mounting and dismounting are troublesome, the test precision is hard to guarantee and the like of an existing deflection test system in load tests.

The invention relates to a horizontal flow precipitation separation device. The horizontal flow precipitation separation device is characterized by comprising multiple corrugated plates arranged in a precipitation pond, wherein each corrugated plate is vertically arranged relative to a horizontal plane, the adjacent corrugated plates are symmetrically arranged and are spaced, and the smallest interval of the adjacent corrugated plates serves as a sludge discharging channel. Compared with the prior art, the horizontal flow precipitation separation device preserves the advantages that a flow direction and a precipitate sludge discharging direction are mutually vertical without interfering with each other, the disturbance between the horizontal flow and a precipitate is avoided, the submerged sludge is prevented from suspending again, meanwhile, a sludge discharging manner is optimized, the vertical sludge discharging channel is adopted, when stream horizontally flows through a stream channel, suspended solids are collided with a frame of the stream channel to rapidly precipitate, and slide downwards along the frame to enter the sludge discharging channel so as to directly precipitate to the bottom of the precipitation pond, and a wobble plate does not need to bear load, so that a problem of load-bearing of the wobble plate caused by large precipitate quantity is solved.

The invention relates to a recovery of a hardware module of an electronic device from a malfunction state. The hardware module is connected via a signal line to a recovery component of the device, a state of the signal line being controlled by the hardware module. The recovery component monitors a state of the signal line. Whenever the signal line is detected not to assume a predetermined state during a predetermined period of time, the recovery component causes a hardware reset of the hardware module.

The invention relates to a novel sewage treatment device. The novel sewage treatment device comprises a reaction tank, wherein the reaction tank is separated into an aerobic zone, an anaerobic oxygen-poor zone and an anaerobic zone; the side wall is provided with a water inlet hole and a mud scraper is arranged at the bottom; a mud bucket is arranged below the reaction tank; the mud bucket is internally provided with a pushing device; a separation plate is provided with an aeration device and is accumulated with an AO reactor; a water passing hole and a water passing weir are arranged on the upper part of the reaction tank; a sludge reflowing hole and a liquid supernatant reflowing hole which is connected with a liquid supernatant pumping-out hole of a sedimentation basin are formed in the side wall of the reaction tank; the sedimentation basin and the reaction tank share one side wall; the sludge reflowing hole on the lower part of the sedimentation basin is communicated with the bottom of the sedimentation basin; the sedimentation basin is internally provided with a horizontal flow sediment separation device; a clean water outlet hole is formed in the side wall of the sludge sedimentation basin; the clean water outlet hole is formed above the horizontal flow sediment separation device; a water outlet weir is arranged on the outer side wall of the sedimentation basin. According to the novel sewage treatment device, the plane occupied area is greatly reduced; organic carbon in raw water can be sufficiently utilized to be used as a carbon source needed by a denitrification process of the oxygen-poor zone can be sufficiently utilized so that the adding amount of the additionally-arranged carbon source is reduced and the whole performance of a sewage treatment system is strengthened.

The invention relates to a hydraulic hammering type full-automatic soil sampling device and a control method thereof. Compared with the prior art, the defect that the analysis test result is influenced by large soil sample disturbance caused by manual soil sampling is overcome. A notch is formed in the upper bottom edge of a fixing frame, a soil scraping piece is installed on the upper bottom edgeof the fixing frame and located at the notch, the soil scraping piece is located over a flow guide cylinder, the soil scraping piece is oval, the size and the shape of the soil scraping piece are thesame as those of the inner wall of a soil sampling cylinder, a sliding groove is formed in the side portion of the flow guide cylinder, the size and the shape of the sliding groove are the same as those of the soil sampling cylinder, and when a double-acting hydraulic cylinder controls the fixing frame to move to the farthest end, the soil scraping piece is tangent to the longitudinal movement track of the inner wall of the soil sampling cylinder. Full-automatic processing of soil sampling can be achieved, the diversity of manual operation and soil disturbance are avoided, and the device canbe suitable for large-area and high-workload field soil component monitoring and collecting.

The invention relates to the technical field of steam turbine regulating systems for million kilowatt nuclear power plants, in particular to a steam turbine steam valve regulating system for a nuclearpower plant and a safety control method of the steam turbine steam valve regulating system. The steam turbine steam valve regulating system comprises an oil circuit unit, a GSE unit, a GRE unit and acontroller. The safety control method includes the steps of controlling a valve opening operation performed by the GSE unit and the GRE unit in response to a valve opening command of the controller,or controlling a valve closing operation performed by the GSE unit and the GRE unit in response to a valve closing command of the controller. Because the safety control method adopts the operation sequence of separate oil inlet or oil loss of the GSE unit and the GRE unit in the valve opening operation or the valve closing operation, the system oil pressure disturbance caused by excessive instantaneous fuel consumption can be effectively avoided, the effect of the oil pressure drop on the protection action of adjacent units is further weakened, and the operation of maintaining the normal working state of the system is facilitated.

The invention discloses a three-axis device suitable for testing the mechanical property of a soil body under the permeation effect of water circulation and a use method of the three-axis device. Thedevice comprises a three-axis pressure chamber, an upper cross beam, a gradienter, a base, a bottom controller and a threaded supporting rod; the gradienter is arranged on the upper cross beam; the upper cross beam is fixedly connected with the bottom controller through the threaded supporting rod; the threaded supporting rod can be adjusted, so that the balance and contact of the upper cross beamcan be controlled according to the gradienter; the base is arranged on the bottom controller; the bottom controller can control the base to ascend and descend; the three-axis pressure chamber comprises a test system and a water circulation system for a soil sample; the three-axis pressure chamber is integrally airtight. With the device adopted, water circulation can be carried out on a soil sample to be measured; and then the mechanical property of the soil sample which has been subjected to water circulation is measured. The device has the advantages of simple structure, convenient operationand real and reliable test result.

The invention relates to a fluid synthesis preparation device for preparing Fe3O4 magnetic nanoparticles, and a control method thereof. The defect that devices capable of preparing the Fe3O4 magneticnanoparticles do not exist in the prior art is overcome. The device comprises a first micro-reaction chamber assembly and a second micro-reaction chamber assembly, the first micro-reaction chamber assembly comprises a first micro-reaction chamber, the upper end of the first micro-reaction chamber is connected with an ethylene glycol supply tube, the bottom of the first micro-reaction chamber is funnel-shaped, the first micro-reaction chamber is placed on a magnetic stirrer, a sieve plate is arranged in the first micro-reaction chamber, a magneton is placed on the sieve plate, the front end ofa silicone tube is connected to the bottom of the first micro-reaction chamber, and the tail end of the silicone tube is connected to the upper end of the second micro-reaction chamber assembly. The preparation device capable of synthesizing the Fe3O4 magnetic nanoparticles cooperates with the fluid control method based on a pump valve to realize automatic preparation of the Fe3O4 magnetic nanoparticles.

A method for conveying large amount of raw material into furnace for directly burning to generate power includes cutting raw materials to be stubs then applying wind force to directly convey air and solid two-phase mixed flow formed by wind and raw material directly to internal phase zone of fluidized bed boiler through pipeline for burning to generate power, removing off sand and mud impurities while raw material is conveyed by wind force. The conveying system for realizing said method is also disclosed.

The invention belongs to the technical field of dredging equipment, and particularly relates to a small dredging device with energy supplied by water and electricity. According to the small dredging device, current with natural potential energy or current of water supplied by a water pump is used for impacting a vertical impeller to drive a transmission shaft to upwards stir sludge and convey thesludge to a sludge conveyor belt, the current impacts a front horizontal impeller and a rear horizontal impeller, the horizontal impellers rotate to drive the sludge conveyor belt to move through a belt so that the sludge can be transported to the sludge conveyor belt and discharged out of a discharge hopper. A sludge absorbing hopper of the device directly stretches into the sludge, in the dredging process, an upper clear water layer is not prone to being puddled, little or no effect is caused to the upper clear water layer, and dredging without stopping water can be achieved; pretreatment can be carried out on the removed sludge, the moisture content of the sludge is reduced, and later transportation is facilitated; and independent energy supplying or collaborative energy supplying of the electric energy and the water energy can be achieved, energy sources are saved, the massive structure is simple, the size is small, the small dredging device is suitable for a small dredging place,and the dredging effect is better for a round funneling pool bottom.

The invention provides a sealed cabin sampling system, which comprises a clean cabin body which is used for storing a to-be-detected object, keeping constant temperature and / or constant humidity and is in a closed state, and a compensation bag which can be expanded and is used for compensating the volume of gas in the clean cabin body, the clean cabin body is provided with an exhaust sampling port used for exhausting to-be-detected gas in the clean cabin body and a gas supplementing port used for circulating external gas, the compensation bag goes deep into the clean cabin body, the compensation bag is communicated with the gas supplementing port through a gas supplementing pipeline, and the compensation bag can perform volume compensation on the interior of the cabin body in the gas sampling and extracting process, so that pollution gas outside the cabin body can be prevented from entering the cabin body due to air pressure difference, the influence of environmental factors or other uncertain factors on a test result is avoided, the compensation bag goes deep into the clean cabin body, in the gas sampling, extracting and expanding process, the gas in the clean cabin body can be disturbed in a large range, the volatile organic compounds in the clean cabin body are distributed more uniformly, and the precision of a measurement result is ensured.

The invention relates to a forming mold for testing inter-layer bonding properties of concrete and a test method thereof and belongs to the technical field of highway engineering. The mold comprises acylindrical mold, a rectangular base, a measuring ruler and a troweling plate, wherein a fixed clamping groove is formed in the rectangular base, and the bottom end of the cylindrical mold is clampedin the fixed clamping groove; a plurality of leveling bolts are arranged around the rectangular base; the cylindrical mold comprises a left semi-circular shell and a right semi-circular shell, and one side of the left semi-circular shell is hinged with one side of the right semi-circular shell; the other side of the left semi-circular shell is detachably connected with the other side of the rightsemi-circular shell; and the measuring ruler is vertically arranged, and the bottom end of the measuring ruler is fixed on the troweling plate which is horizontally arranged. The mold provided by theinvention is used for integrated formation of an inter-layer binder and a concrete structure layer, can accurately control the dosage and the thickness of the binder, is convenient for fixing and disassembling test specimens, and avoids the disturbance to the inter-layer bonding properties caused by human factors to the maximum limit, thereby achieving the purpose of accurately evaluating the properties of the inter-layer binder.

The invention relates to a molding mould capable of adjusting the concrete interlayer bonding thickness and a test method thereof, and belongs to the technical field of road engineering in traffic engineering. The mould comprises structures such as a base, a thickness adjusting steel plate, a rectangular mould frame, an adjusting screw, a fixing nut, a propelling plate, an adjusting screw rod, a leveling bolt, a fixing block and a counterforce frame. Different concrete mixing materials are added manually, the thickness between the different concrete materials and the interlayer bonding material can be precisely controlled, the conformity of the size of the materials of each structural layer is maintained, integral forming of the interlayer bonding material and the concrete structural layercan be simply, conveniently and rapidly achieved, meanwhile a test piece can be convenient to dismount and mount, the disturbance of human factors to the interlayer bonding capability can be avoidedto the maximum extend, and accordingly the bonding ability between road surface material layers can be accurately reflected.

The invention provides an in-situ testing method for an unsaturated soil permeability coefficient by combining an active optical fiber temperature change-based in-situ distributed measurement method for water content with a soil water characteristic curve on the basis of a traditional transient profiling method. Long-distance and rea-time distributed measurement of soil mass volume water content can be achieved, and calculation of the unsaturated soil permeability coefficient is achieved on the basis of a measured profile of the volume water content, so that the shortcoming that a volume watercontent distribution function needs to be assumed on the basis of a water content point measurement result or the volume water content is indirectly calculated through the soil water characteristic curve in the prior art is overcome; and the calculation accuracy of the unsaturated permeability coefficient is improved.

The invention discloses an urban drainage pipeline sediment in-situ sampling device which comprises a supporting device and a sampling device. The sampling device comprises a sampling rod and a sampler connected with a tail end of the sampling rod; and the supporting device comprises a supporting rod, and the sampling rod moves relative to the supporting rod to enable the sampler to complete sampling action. A baffle used for opening and closing the sampler is also included. The baffle is fixed to the tail end of the supporting rod. The sampling rod comprises a horizontal rod and a vertical rod, a sliding clamping groove is arranged in the horizontal rod of the sampling rod, the supporting rod comprises a transverse rod and a vertical rod, a sliding rod is fixedly arranged on the transverse rod and embedded into the sliding clamping groove, and the sliding clamping groove and the sliding rod slide relatively. Supporting foot stands are fixedly arranged at the bottom of the supporting rod. In the invention, manual well descending sampling is not needed when a sediment is sampled, safety is improved, double operating rods (namely the sampling rod and the supporting rod) are designedin a matched mode, operation is easy and convenient, labor is saved, convenience and rapidness are achieved, safety and reliability are achieved too, an application range is wide, applicability is high, and integrity of the sediment in the sampling process is guaranteed.

The invention provides a soil microbial sample collection tool, which belongs to the field of biotechnology and includes a base part and a cutter head. The base part is provided with a first connecting part, and the cutter head is provided with a second connecting part. The first connecting piece and the second connecting piece are detachably connected; the knife head includes a connecting block and a knife body, the connecting piece is hemispherical, and the second connecting piece is arranged on the outer arc surface of the connecting piece; the knife body is cylindrical, and the knife body One end of the body is connected with two free ends of the connecting block, the other end is provided with a blade, and the side wall of the cutter body is provided with through holes; a group of symmetrical air holes are formed between the cutter body and the connecting block. This collection tool has changed the original method of manual excavation and sampling, avoided the disturbance of soil microbial samples by shovels, reduced human errors, ensured the integrity of soil microbial samples, and improved the accuracy of test sample collection. Different drill bits are used in texture to improve field work efficiency and save labor and time.

The invention provides a soil microorganism sample collection tool, and belongs to the field of biological technologies. The soil microorganism sample collection tool comprises a basic piece and a tool bit, wherein a first connection piece is arranged on the basic piece; a second connection piece is arranged on the tool bit; the basic piece and the tool bit are detachably connected with each other through the first connection piece and the second connection piece; the tool bit comprises a connection block and a tool body; the connection block is semispherically annular; the second connection piece is arranged on the outer arc surface of the connection block; the tool body is cylindrical; one end of the tool body is connected with the two free ends of the connection block, and a blade is arranged at the other end of the tool body; a through hole is formed in the side wall of the tool body; a group of symmetric air holes are formed between the tool body and the connection block. According to the collection tool, the original mode of artificial soil excavation sampling is changed, so that the disturbance effect of an iron shovel and the like on a soil microorganism sample is avoided, manmade errors are reduced, the completeness of the soil microorganism sample is guaranteed, and the precision of test sample collection is improved; different drill bits are used on different soil lands, so that the outdoor working efficiency is improved, and the labor and the time are saved.

The invention discloses an in-situ sampling device for urban drainage pipe sediments, which includes a support device and a sampling device. The sampling device includes a sampling rod and a sampler connected to the end of the sampling rod; The movement causes the sampler to complete the sampling action. Also included are flaps to open closed samplers. The baffle is fixed on the end of the support rod. The sampling rod includes a horizontal rod and a vertical rod. A sliding slot is provided on the horizontal rod of the sampling rod. The supporting rod includes a horizontal rod and a vertical rod. A sliding rod is fixedly arranged on the horizontal rod, and the sliding rod is embedded in the sliding slot. The slide bar slides relatively. The bottom of the support rod is fixedly provided with a support tripod. The invention does not need to manually go down to the well to sample the sediment, which improves the safety. The double operation rod (that is, the sampling rod and the support rod) is designed in combination, and the operation is simple, labor-saving, convenient, fast, safe and reliable, and has a wide range of applications and strong applicability. , to ensure the integrity of the sediment during sampling.

The present invention relates to the technical field of a steam turbine regulation system of a million-kilowatt nuclear power plant, in particular to a steam turbine valve regulation system of a nuclear power plant and a safety control method thereof, wherein the steam turbine valve regulation system includes an oil circuit unit, a GSE unit, a GRE unit and a controller, The safety control method includes controlling the valve opening operation of the GSE unit and the GRE unit in response to the valve opening instruction of the controller, or controlling the valve closing operation of the GSE unit and the GRE unit in response to the valve closing instruction of the controller. Since the safety control method adopts the operation sequence of the GSE unit and the GRE unit to separate the oil intake or oil loss during the valve opening operation or the valve closing operation, it can effectively avoid the system oil pressure disturbance caused by the instantaneous excessive oil consumption, and It further weakens the effect of oil pressure drop on the protection action of adjacent units, which is beneficial to maintain the normal working state of the system.

The invention relates to a fluid synthesis preparation device for preparing magnetic / noble metal composite nanoparticles. Compared with the prior art, the device solves the defect that a synthesis device for preparing a magnetic / noble metal composite nano material is not available. The device comprises a Fe3O4 magnetic nanoparticle synthesis preparation component, a Fe3O4@TiO2 core-shell magnetic nanoparticle synthesis preparation component, a Fe3O4@mTiO2 magnetic nanoparticle synthesis preparation component and a Fe3O4@mTiO2 / noble metal magnetic composite nanoparticle synthesis preparation component. The invention designs the preparation device for preparing the magnetic / noble metal composite nanoparticles, together with a conventional control method based on chemical procedures, automatic preparation of a Fe3O4@mTiO2 / noble metal nano material can be achieved, manual operation on the procedures is reduced, disturbance of manual operation is avoided, and the device has the characteristics of being simple and convenient to operate, small in reagent amount and good in repeatability.

The invention relates to a horizontal flow vertical sludge discharge and sedimentation separation device, which is characterized in that it includes a plurality of corrugated plates installed in the sedimentation tank, each of the corrugated plates is vertically arranged relative to the horizontal plane, and adjacent corrugated plates are arranged symmetrically and mutually There is a distance between them, and the minimum distance between adjacent corrugated plates is the mud discharge channel. Compared with the prior art, the present invention retains the advantages that the water flow and sediment discharge direction are perpendicular to each other and does not interfere with each other, avoids the disturbance between the horizontal flow and the sediment, prevents the sinking sludge from resuspension, and simultaneously The sludge discharge method is optimized, and a vertical sludge discharge slide is adopted. When the water flows horizontally through the water flow channel, the suspended matter collides with the frame of the water flow channel and settles quickly, slides along the frame into the sludge discharge channel, and directly settles to the sedimentation tank At the bottom, the sloping plate does not need to bear weight, thus solving the load-bearing problem caused by the excessive amount of sediment on the sloping plate.

A method for conveying large amount of raw material into furnace for directly burning to generate power includes cutting raw materials to be stubs then applying wind force to directly convey air and solid two-phase mixed flow formed by wind and raw material directly to internal phase zone of fluidized bed boiler through pipeline for burning to generate power, removing off sand and mud impurities while raw material is conveyed by wind force. The conveying system for realizing said method is also disclosed.

The invention discloses a leveling device for a wind measuring instrument on a large cable of a large-span suspension bridge. The supporting steel plate is fixed on the crossbeam of the inspection road, and a platform panel for fixing the supporting rod of the wind measuring instrument is arranged above it. The supporting steel plate and the platform There is a controller and three leveling parts with the same structure between the panels; the controller receives the inclination data sent by the sensor, calculates the adjustment range of each servo motor according to the current inclination situation, and sends the adjustment command to the corresponding programmable Logic controller; the programmable logic controller turns on the servo motor, and the output end of the servo motor reducer is vertically provided with a ball screw; the matching screw nut is fixedly connected to the platform panel to drive the platform panel to lift and level. The invention can detect the inclination of the wind measuring instrument in real time, automatically adjust the angle of the instrument in time according to the inclination degree of the instrument, keep the instrument completely level, greatly reduce the workload of manual leveling, and improve the accuracy of wind measurement data.

The invention relates to a supercritical unit fuel calorific value correction control method based on a dynamic power-coal ratio, which comprises the following steps of: calculating a power-coal ratio loop by utilizing a judgment condition of steady-state operation of a unit to obtain a steady-state power-coal ratio coefficient of the unit, and performing product operation on the steady-state power-coal ratio coefficient and a current load instruction to obtain a power-coal ratio coefficient of the unit; obtaining the basic coal quantity of the unit under the condition of the current fire coal heat value; when the unit fire coal heat value changes, correcting the dynamic power-coal ratio of the unit through power-coal ratio correction trigger judgment, single correction coal quantity latching, correction coal quantity superposition and boiler master control reverse compensation of the power-coal ratio correction coal quantity. According to the method, the f(x) function of the coal quantity corresponding to the conventional load is replaced based on the power-coal ratio, so that the accuracy of the coal quantity following the change when the load is changed can be ensured, and meanwhile, the disturbance in the coal calorific value correction process can also be avoided.

The invention discloses a drawer type cooking range oil-water separator. An inlet / outlet (4) and an exhaust hole (5) are formed in a tank body (1); a guide plate (7) is arranged inside the cavity of the tank body (1) in an inclined manner; baffles are arranged on the front side and the rear side of the guide plate (7); a drawer type oil-water separation box (10) is arranged on the guide plate (7); a material platform (11) is arranged on the drawer type oil-water separation box (10); the material platform (11) corresponds to a feeding hole (3); the gap between the right side of the guide plate (7) and the inner surface of the right end of the tank body (1) is used as an upper water outlet (12); a buffer tank (13) is arranged at the lower part of the upper water outlet (12); the bottom surface of the cavity of the tank body (1) is divided into two parts; a dirt collection tank (15) is arranged at the left part; the right part is a convex dirt accumulation platform (16); a blowdown hole (21) is communicated with the dirt collection tank (15). The drawer type cooking range oil-water separator is not only simple in structure, but also very convenient to clean.

The invention relates to a method for preparing Fe 3 o 4 The fluid synthesis and preparation device of magnetic nanoparticles and its control method, compared with the prior art, solves the problem that has not been able to prepare Fe 3 o 4 Drawbacks of Magnetic Nanoparticle Devices. The present invention includes a first micro-reaction chamber assembly and a second micro-reaction chamber assembly, the first micro-reaction chamber assembly includes a first micro-reaction chamber, an ethylene glycol supply pipe is connected to the upper end of the first micro-reaction chamber, and the first The bottom of the micro-reaction chamber is funnel-shaped. The first micro-reaction chamber is placed on a magnetic stirrer. There is a sieve plate in the first micro-reaction chamber. Magnets are placed on the sieve plate. The head end of the silicone tube is connected to the first micro-reaction chamber. At the bottom of the first micro-reaction chamber, the end of the silicone tube is connected to the upper end of the second micro-reaction chamber assembly. The present invention provides the ability to synthesize Fe 3 o 4 The preparation device of magnetic nanoparticles, combined with the fluid control method based on the pump valve, can realize Fe 3 o 4 Automated preparation of magnetic nanoparticles.

The invention relates to a fuel calorific value correction control method for a supercritical unit based on a dynamic power-to-coal ratio. By multiplying the steady-state power-to-coal ratio coefficient with the current load command, the base coal amount under the current coal-fired calorific value of the unit can be obtained; Correction of coal volume latching, correction of coal volume superposition, and reverse compensation of boiler main control for correction of coal volume by power-to-coal ratio, to correct the dynamic power-to-coal ratio of the unit. The invention replaces the f(x) function function of the coal quantity corresponding to the conventional load based on the power-to-coal ratio, which can ensure the accuracy of the coal quantity following the change when the load changes, and can also avoid the disturbance in the coal calorific value correction process.