It is well known, in the cement production process, the powdered coal measures and controls to the stable kiln hot working system, enhances the chamotte to produce, the quality, reduces the energy consumption, raises the automated level and the management level plays the extremely vital role. The kiln system feeds the coal amount undulation out of control, can cause the powdered coal incomplete combustion, not only creates the energy waste, simultaneously causes the carbon monoxide to exceed the allowed figure, receives the dust system safe operation for the kiln tail to bring the hidden danger. Therefore, must select the measurement accurately, feeds the coal amount stably, may move, the speed of response is quick, (coal plants, degree of fineness, water classification) to the powdered coal characteristic the adaptiveness strong measurement and the control system, to the time achieved the high and stable production, the frugal energy, reduce the cost the goal. This research is for the purpose of developing has the international advanced level, the performance price is higher than, has the independent intellectual property rights, for new violates the law the cement production line necessary to enter the kiln powdered coal measurement and the control system. The KXT Coriolis force scale powdered coal measurement and the control system (hereafter refers to as "the KXT system") by the stationary stream for the material machine, the Coriolis force powder body measurement scale, the new delivery pump, and the control device is composed. The stationary stream for the material machine installment underneath the powdered coal warehouse, its function is (hereafter refers to as "the Coriolis force scale" for the measurement installment --- Coriolis force powder body measurement scale) to provide the current capacity stable powdered coal, therefore called it "gives the material machine the stationary stream". The powdered coal enters the Coriolis force scale after the stationary stream for the material machine, the control device flickers the fashion 量测 definite value according to the Coriolis force scale with to suppose the definite value comparison result feedback control stationary stream for the material machine rotational speed, causes the spurt value throughout to track supposes the definite value, thus realizes to feeds the coal amount the measurement and the control. After the measurement powdered coal enters the powdered coal conduit through the new delivery pump. Second, the main research content (1) Coriolis force scale developmentcement plant powdered coal measurement and the control system must have the measurement accurately, feeds the coal amount stably, may move, the speed of response is quick and so on the function, but these functions realizations first must establish above the measurement accurate foundation. The Coriolis force scale is composes the KXT system the essential equipment, is through the independent innovation research and development powder body material measurement installment, is this research project technical core. 1st, Coriolis force scale measurement principle and basic structure 1.1 measurements principleCoriolis force scale application cauri Ollie mechanics principle measurement powder body material mass flow. In mechanics research, the object movement must perform in some definite reference system to describe. This research involves mechanics principle is makes the relative motion take the object in the even rotation reference system as the condition. Particle makes the relative radial motion when the even rotation reference system, receives the real strength is composed by three parts, namely inertia centrifugal force, centripetal friction force and cauri Ollie strength. The cauri Ollie strength is along cuts to. The cauri Ollie strength vector expression is: Fc=-2m omega ×v ', in the formula omega is the rate of angular motion, v ' is the relative velocity, m is the quality. Because the particle is makes the radial motion in the even rotation reference system, the angular speed omega is invariable, particle in wilfully a position relative velocity v ' for true definite value (also not quality influence). Therefore expression in the formula cauri Ollie the strength Fc size change is only related with the quality. Therefore, then obtains the material through the precision measuring Fc size the accurate current capacity. 1.2basic structuresbases object when even rotation reference system movement receives the cauri Ollie action of force the description, in the Coriolis force scale is equipped with surveys the plate, surveys on the plate the radial direction to establish several surveys leaf blades, like chart 6 shows, surveys the plate in the electrical machinery main axle actuation mean high speed rotation. Must measure the material falls to the survey plate center, after excessively expects the awl to change flows to, by leaf blade capture, under centrifugal force function along radial direction to outflow boundary movement. In the rate process, the material has received radial direction friction force Fr and reverse centrifugal force Fx, as well as along cuts to the Coriolis force Fc function, Fc causes reaction movement moment of force M, but Fr, Fx cannot have the reaction moment of force to the drive shaft. To surveys the plate through survey cauri Ollie strength Fc the moment of application of force then to obtain the material the mass flow. Its formula is: M = Q omega R² in the formulas: The M---- survey plate receives moment of force; Q----- material current capacity; Omega ---- Angular speed; R----- survey plate radius. 2nd, the Coriolis force scale core engineering research and innovates 2.1, the important technical parameter researchapplication cauri Ollie mechanics principle measurement powder body material, first is take the material in the even rotation reference system pitch diameter to the movement as the condition. Therefore, the Coriolis force scale in theoretically must conform to following two basic conditions: (1) surveys the plate rotational speed to have to be constant; (2) the material must by the survey plate center to the outer diameter to the movement. In theoretically satisfies these conditions not to be certainly difficult, how is the key manifests in the best structural design. ² may know according to formula M =Qomega R: Must determine the survey plate effective rotational speed scope, and from effective rotational speed scope optimal ideal rotational speed; Must determine the survey plate ideal radius, and survey leaf blade establishment quantity and size and so on many related technical parameters. This research under the theory instruction, according to the formula, through the massive experimental study, has obtained the empirical formula, with instructs the scale the structural design. 2.2nd, surveys the plate ideal rotational speed the researchsurvey plate rotational speed to relate the material the speed of flow, the current capacity, the Coriolis force size. The survey plate rotational speed research is one of this project important contents, is the Coriolis force scale structural design essential technology parameter. According to Coriolis force vector expression Fc=-2m omega ×v ', surveys the plate rotational speed (or is called as angular speed omega) to relate the particle relative velocity v ', had decided the particle receives Coriolis force Fc size. This project in the simulation test and in the theoretical analysis foundation, had first determined surveys the plate effective rotational speed scope. But the effective rotational speed research has only solved the angular speed omega value scope, cannot provide the concrete parameter and the basis for the design. In order to obtain the ideal rotational speed parameter, in the part time worker industry experiment, through tests the prototype separately to the powdered coal, the pulverized coal ash, the crude material powder carries on the material object measurement, obtained in the sampling analysis foundation has surveyed the plate ideal rotational speed. 2.3rd, surveys the plate ideal radius researchparticle in to survey on the plate the movement relative position different, receives the Coriolis force size is also different, therefore, surveys the plate radius and the Coriolis force Fc size correlation, surveys the plate ideal radius research to relate the Coriolis force scale structure the reasonable size, the measurement ability, the sensor measuring range, the power disposition, the structure optimizes, and the serialized design. The theoretical formula is impossible to provide surveys the plate ideal radius, only has through the experimental study side can establish optimizes the empirical formula with the Coriolis force scale which the design tallies. 如前所��, surveys on the plate to be equipped with the radial direction survey leaf blade, falls to the survey plate center material under the minute material awl function the movement to the leaf blade place, after by the leaf blade capture, along the leaf blade to the outer diameter to the movement, and receives Coriolis force to affect. In view of the fact that after the material is only then received by the leaf blade capture Coriolis force to affect, therefore from the stress angle, surveys the plate to be supposed to divide into the effective survey area and the invalid survey area, is equipped with the survey leaf blade partially for the effective survey area. The material has not received Coriolis force in the invalid survey area to affect, also may call it the survey blind spot. Therefore, surveys the plate radius to be supposed to divide into the effective radius and the invalid radius two parts, the effective radius and the leaf blade length are equal. This causes to survey the plate ideal radius research to change complex, because the ideal radius constitutes by the reasonable effective radius and the invalid radius two parts. In repeatedly tested in the foundation to obtain the correction coefficient, inferred and has established the experience formula, with instructed the different specification Coriolis force scale survey plate to optimize the design. (2) stationary stream feeds the coal amount to the material installmentdevelopment to be stable may move is new violates the law the production line to feed the coal system the basic request, this project will stabilize for the material technology and the equipment development puts to the important position, abandoned has formerly taken to measure the technology, neglected to the material installment idea. First had pointed has analyzed the material characteristic and the craft condition to gives the material machine performance influence and the request. Is located in the powdered coal warehouse base for the material installment, when the powdered coal warehouse 内料 shift, powdered coal warehouse feeding the material flows the impulse to be able to affect gives the material stability. Powdered coal degree of fineness thin, moisture content low, 容重 small, the fluidity is good, the anthracite fires the craft in particular, powdered coal degree of fineness usually below 1%, causes to stabilize to the material changes difficultly. The powdered coal moisture content to stabilizes has the certain influence to the material. The moisture content leaning congress brings the powdered coal 起拱, moistens the material, the yummy treats is impeded and so on the question. Especially in rainy season, or rotary kiln ignition elevation of temperature period, the very many cement plants powdered coal moisture content does not conform to the craft condition requirement. Therefore, must consider for the material machine structural design in the moisture content Gao Shi adaptiveness. The cement fires the system pressure variation also to be able indirectly to affect gives the material machine yummy treats stability. When system operating mode not normal, 输煤管a pressure sometimes can have the undulation, serious when can cause for the material machine yummy treats to be impeded or to be unable to move. 1st, the stationary stream for the material machine structure research and the principle of workthrough the material characteristic and the craft condition research analysis, this project adopted with the tradition for the material installment completely different design proposal, the development develops the brand-new structure (to hereafter refer to as "stationary stream for the material installment ---- WD flat spin type stationary stream for the material machine to give material machine"). The stationary stream sees the schematic drawing for the material machine structure. Like the chart shows, the stationary stream by reduces 压仓 (1), 压仓 (2), the stationary stream cavity for the material machine (3) is composed. Reduces 压仓 in is equipped with the decompressor, causes to enter 压仓 in material not to press the warehouse the influence. 压仓 in is equipped with stirring (4), causes the material full activation, avoids the material 起拱, moistens the wall, the elimination material 死区. Because 压仓 内料 presses evenly, entered the rotor cavity for the material under the same 容重 condition to create the condition. In the stationary stream cavity is equipped with the flat spin minute standard wheel, every time transfers a week transportation same volume the material. The stationary stream installs the type speed reducer and the motor-driven for the material machine by the axis, uses the frequency changer adjustment electrical machinery rotational speed, the frequency changer is controlled to PLC. PLC supposes the definite value comparison result according to the instantaneous current capacity examination value and the current capacity, the real-time regulation for the material machine rotational speed, causes the instantaneous current capacity throughout to track the hypothesis current capacity, the realization quota gives the material goal. Reduces 压仓, 压仓, the stationary stream cavity 进料�?and the discharge hole assumes 180° the dislocation arrangement, the material in can leave in the stationary stream for the material machine after the labyrinth type mobile side for the material machine. In addition, on a rotor cavity flat spin minute standard turn of leaf blade has used the spring-loaded seal material, the realization zero gap. Therefore, effective addressing high fluid material presses under the change and the dead weight action of force in the material produces runs the material, flushes the material question. 2nd, the stationary stream ---- evenly gives the material forthe material machine technical performance to be stable, not warehouse pressure, material characteristic influence; ---- The adaption craft system pressure variation ability is strong; ---- For estimated stable may move; ---- Structure reasonable, the performance is reliable, maintains simply. (3) new screw pump development 1, the screw pump plays the transportation in systemrole screw pump in the system and locks the wind action, in effectively overcomes 输煤管under the system pressure premise, after the Coriolis force scale measurement powdered coal fast, even will send in 输煤管in. When pipeline internal pressure change or transportation wind pressure undulation, the screw pump essential can effectively block the powdered coal to return flees, leaves the material impeded performance, for measures the equipment to provide the regular service conditon. 2nd, the new screw pump technology characteristicnew screw pump uses the simple transmission structure, uses changes 节距 the spiral design, the application ejector principle, causes to pump 出料�?the work atmosphere basically to assume the negative pressure condition, the effective addressing 输煤管system pressure variation to spiral has pumped out the influence which the material brings; The axial-tab terminal seal uses the technical plan which the gas seal, 油封, the mechanical seal unifies, oil resistant satisfied, thermostable, the wear-resisting request, the sealing property has been superior; Will have the independent intellectual property rights the anti-friction material technology, will apply to the design and the manufacture process which will pump, achieved under the same level delivery capacity condition, the spiral leaf blade service life will outdo "richly happy pumps" 堆焊 above technical 2 times; Outside uses sets may the mode counterweight, may act according to the different operating mode condition, the change damping valve stress size, thus very good solution material hitch reasonable compactness question; Supposes the manual yellow oil pump, transports 动件 the lubrication to refuel 简��易行. The new spiral delivery pump synthesized the traditional screw pump and introduces rich Le Beng the reasonable ingredient, increased the unique innovation technology, the performance reliable, structure novel, maintains simply, the operating cost is low, satisfies the measurement and the control system request. (4)th, the systems control 1, the control principlecontrol device flickers the fashion 量测 definite value according to the Coriolis force scale with to suppose the definite value comparison result feedback control stationary stream for the material machine rotational speed, causes the spurt value throughout to track supposes the definite value, after the measurement powdered coal enters the powdered coal conduit through the new delivery pump. The KXT system uses the PLC control (programmable controller), the sensor gathers the signalling to changes delivering, after changes delivering processing, transforms standard signal which PLC can accept (4 ~ 20mA), satisfies with the PLC communication request. Completes the operation, the determination by PLC, compensates, duty and so on hypothesis, adjustment, demonstration, simultaneously real time display process dynamic graph. 2nd, the system functionKXT control system take controls the cabinet as a core, constitutes an integrity independent control unit, then receives controls (or calls the DCS system) to the user master control room, also passable has controlled cabinet itself to complete the complete function which the powdered coal measurement and the control needs. Controlled in the cabinet to concentrate with the control related electrical equipment, like PLC, the person - machine contact surface (touched screen), changes delivering, the frequency changer, the circuit breaker, the contact device, the insulating transformer, the switching power supply, the relay and so on. The system function includes: Automatic control function; The operation function (center controls automatic way, center controls manual way, this machine operating mode), the zero automatic correction function, automatically demarcates the function, the demonstration function, the correspondence function, the parameter revision and the password hypothesis function. 3rd, corresponds the KXTsystems control function using control software, has developed following application control software: 3.1 automatic controls, the quota 3.4 automatically demarcates the software 3.5 software for displays 3.6 parameters revisions and the password hypothesis software 3.7 output accumulations software 3.8 men-machine contact surfaces for material software 3.2 systems operations software 3.3 measurements scales zero automatic correction software (touches screen) software. Third, the project completes technology economic indicator ---- measurement accuracy ±0.5% ---- control accuracy ±1% ---- adaption material moisture <= 2% ---- permission material degree of fineness < 1% ((4,900 筛筛 -odd) ---- the wear-resisting service life >= 3.5 years ---- are basic with the kiln system synchronization safe handling rate 100% ---- measurement process is not pressed the powdered coal warehouse warehouse the change, powdered coal degree of fineness, the powdered coal moisture content, 输煤管the pressure variation influence. Fourth, the KXT system application example 1, uses in the new line to constructInner Mongolia 乌兰 cement corporation four 2500t/d new to violate the law the cement production line to select the KXT Coriolis force scale powdered coal measurement and the control system. In October, 2005, a this company 5000t/d new line also signs a treaty selects the KXT Coriolis force scale powdered coal measurement and the control system; The Beijing gold corner cement corporation, Henan you state day auspicious group cement corporation 3200t/d new violates the law the cement production line to select the KXT Coriolis force scale powdered coal measurement and the control system. 2nd, uses in the old factory to transformthe Inner Mongolia 乌兰 cement corporation earlier period construction 2500t/d new to violate the law the cement production line to use the KXT Coriolis force scale powdered coal measurement and the control system substitution import 溜槽 type flowmeter. The Hubei China new cement corporation after the inspection, the 2000t/d cement production line feeds the coal transformation project to select the KXT Coriolis force scale powdered coal measurement and the control system, the substitution import rotor scale. Tangshan opens the new cement corporation 2000t/d cement production line to transform selects the KXT Coriolis force scale powdered coal measurement and the control system, the substitution import flushes the plate current gauge. The Nanjing three dragons cement corporation 1200t/d cement production line transforms selects the KXT Coriolis force scale powdered coal measurement and the control system, the substitution import flushes the plate current gauge. The Shandong three water centuries innovation cement corporation 2000t/d cement production line transforms selects the KXT Coriolis force scale powdered coal measurement and the control system, substitutes for the original measurement equipment. 3rd, uses in the anthracite �?to burn the craftLiaoning Liaoyang east of Hebei Province water company, the Ganzhou saint tower cement corporation, the Guangzhou broad England cement corporation, 1500--2500t/d production line and so on Liaoyang permanent prestige the cement corporation uses the anthracite �?to burn the craft, powdered coal degree of fineness is smaller than 1%, the fluidity is good. Uses the KXT Coriolis force scale powdered coal measurement and the control system obtains the good use effect. 4th, the high and cold local application exampleHubei China new cement corporation (the Tibet project) 1500t/h violates the law the production line to construct at elevation 3500m, the lowest temperature -30 �?South of Tibet area, selects the KXT Coriolis force scale powdered coal measurement and the control system, the use result indicated, the Coriolis force scale adapts the high elevation high and cold operating mode, feeds the coal stably, the measurement accurate, the movement is reliable. Fifth, concluding remarkthis research in domestic should use in for the first time the powder body material measurement domain the cauri Ollie mechanics principle, based on this principle KXT Coriolis force scale powdered coal measurement and control systematic price compared to high, has realized the high accuracy fast measurement and the control, the movement stable is reliable, its main technology economic indicator achieved the overseas similar equipment advanced level, the complete part has realized the domestic product, the batch exportation, has symbolized the our country powdered coal measurement equipment official trend international market. Can meet the 5000t/d cement clinker production line powdered coal measurement needs. Up to now, more than 260 set of KXT powdered coal measurement system new violated the law in domestic and foreign 700 ~ 6500t/d on the cement production line to move, the product proliferated the nation, the market share rises year by year, has broken our country cement industry powdered coal measurement technology product long-term dependence import pattern. The KXT Coriolis force scale powdered coal measurement system has exported 26 wraps, founded our country powdered coal measurement control technology and the equipment exportation beginning of a matter.