輪壓展機 的英文怎麼說
中文拼音 [lúnyāzhǎnjī]
輪壓展機
英文
wheel stretching machine-
Based on the demand of power department, a full distributed multifuncitional monitoring device is studied. this instrument not only can measure the data of hydroelectric plant, but also integrate the funcition of control the dynamotor, by cooperate with the program of epigynous system, it can realization the auto generate electricity on the hydroelectric plant and ordinal startup - stop of the dynamotor. 2 furthermore, performance of integrated dft arithmetic enhances the acturacy and reliability of measure. by communication several devices can run online to be controlled dispersedly and managed centrally
本文分析了國內外水電站自動控制裝置的研究和發展狀況，尤其是國內小型水電站的自動化現狀，針對現有電力部門的需求，設計並實現了一種單元式的微機自動監控裝置，該裝置不僅實現了對水電站內各種模擬參數和數字信號的實時監測功能，還對水輪發電機組進行了調控，通過與上位機處理程序的配合，可以實現水電站的自動發電控制、機組順序啟停；在測量發電機組機端電壓和電流參數的時候，採用32點離散傅立葉演算法（ dft ） ，增加了測量的準確性和可靠性；通過通訊可以實現裝置的聯網運行，做到「分散控制、集中管理」 。Compress disk is the very important rotational component in the areoengine. when the compress disk is working, the grads of temperature and stress between the rim and the center of the disk are great. in order to raise the thrust - weight ratio of the disk and reduce oil consumption. the best prospective way is the dual alloys disk used
壓氣機盤是航空發動機上一個很重要的轉動部件，壓氣機盤工作時，輪緣和輪轂溫度梯度和應力梯度較大，為了提高飛機發動機推重比、減低耗油量，要求壓氣機盤的工作溫度、使用性能更高，雙合金盤製造是最有發展前景的技術。The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。Cracking failure of centrifugal compressor ' s impellers was analyzed, the welding craters in the impellers led to stress concentration. the unsteady gas flow accelerated the development of cracks in the impeller
摘要針對某石化公司離心壓縮機葉輪多次發生開裂、掉塊等故障以及裂紋形成機理進行了分析。分析結果表明了葉輪開裂原因系疲勞開裂，葉輪焊接缺陷產生了焊接弧坑，造成表面應力集中，氣流激振加速了裂紋擴展。Abstract : the development, structure performance and new te chnology application of such large - scale open pit loading equipment as elect ric shovel, hydraulic excavator and wheel loader were described
文摘:論述了露天礦大型裝載設備電鏟、液壓挖掘機和輪式裝載機的發展概況、結構性能及新技術的應用。In this paper, some realizing basic principles and technology features of over - speed control system in kinds of domestic and representative units " digital electro - hydraulic control are summarized and discoursed upon
隨著電子控制技術的發展，電超速保護控制系統正替代傳統的機械液壓調節系統，成為汽輪機速度控制的主流。In the paper, based on the method of low pair replacing with high pair, the problem of cam design was transferred to that of linkage design. by means of rotary unit vectors, the equations of displacement, velocity and acceleration of the replacement mechanisms were developed. and then, the virtual linkage ' s length and direction were deduced
論文基於高副低代原理，將平面凸輪機構設計與再現函數的平面連桿機構設計統一為同一種方法，運用圓向量函數建立代換機構的位移、速度、加速度矢量方程式，求取虛擬連桿桿長和方向，由此展開凸輪理論廓線、實際廓線、曲率半徑和壓力角的求解，並得出用圓形刀具加工凸輪時刀具中心的軌跡方程。From the aspect of geometry, structure design, manufacture and examine, this paper generally summarizes the gcm ' s study progress in detail, discusses its kinetic rule and the determination of its primary structure parameter, and educes its surface equation and pressure angle equation based on the homogeneous matrix transformation and the conjugate engagement theory of spatial surface. on the basis of geometry study of gcm, the paper makes a comprehensive analysis to the interference phenomenon that will possible exist in the assemble course of two different structure of gcm with the help of matlab software
本文從運動幾何學、結構設計、動力學、製造和檢測等方面對國內外弧面凸輪機構的研究進展進行了全面綜述，詳細論述了高速凸輪機構的運動規律和弧面凸輪機構基本尺寸的確定，基於空間曲面共軛嚙合原理，通過齊次變換推導了外弧面凸輪的曲面方程和壓力角方程，並提出了對應的廓面修形演算法；提出了內弧面凸輪機構的構想，推導了內弧面凸輪的曲面方程和壓力角方程。In order to execute this research, the experimental equipment that can fulfill the requirements of the regions of reynolds numbers in mte was built. two new measurement techniques, mini - size static pressure hole and mini - type pressure probe were presented
本文針對微型渦輪發動機流動問題研究的需要，發展了壁面微靜壓孔和微型單管總壓探針測量技術。The subject of this paper is to research the retrofit of the governing system of the national 200mw turbine generator, beginning with commom problems existing in hydraulic governing system, combining with the demand of modern control system and the development of the electric power grid, discusses deeply the necessity of modifying the hydraulic governing system into the digital electronic hydraulic system
本論文以國產200mw機組汽輪機調節系統的改造為研究課題，從目前液壓調節系統普遍存在的問題入手，結合現代化控制系統的要求及電網發展的需求等方面，深入地闡述了液調改為電調的必要性。Surface, the easliy wear and tear parts use grinding - resistant material, extruding part use variable cylinder diamethe extruder with compact structuures, transmission gear with hard gear ter detachable pitch, great extruding p0ressure, high vacuum degree, low loading capacity ( electricity - saving more than 25 % than the same product ). it reaches advanced domestic level andcan replace imported items. it is suitable to produce hollow brick with high hole ratio, coal waste rock hollow bricks, shale hollow bricks, prower coal ash hollow - bricks. the extruder won the scienttific and technological progress pride of the lst building material scientific and techniques achievement exhibition in jiangsu province and the golden prize of the mational brick and tile energy - saving lxln achievement
該機結構緊湊、傳動齒輪均系硬齒面，易損件採用耐磨材料、擠出部分採用變缸徑、變螺距、擠出壓力大、真空度高，裝機容量低（比同類產品節電25 % ） ，性能優于進口同類設備，適用生產高孔洞率空心砌塊、煤矸石、頁巖、精煤灰空心磚及各類高摻入量粉煤灰磚和低塑性原料磚，該機在江蘇省首屆建材科技成果展覽會科技進步獎； 94全國磚瓦節能四新成果展覽會金獎，西安國際博覽會金獎。With the developments of modern steam turbines, which work under conditions of high pressure and elevated - temperature, especially atomic power stations are designed and made, the reliability and safety are strict with the stucture
隨著汽輪機向高溫、高壓和大容量化發展，特別是原子能電站的設計和製造，對結構的可靠性提出更高的要求。According to the present problems and developing tendency of hydraulic turbine governor, four main issues of this field are studied in this paper. the content include hydraulic control system, frequency measurement unit, stability of the discrete control system, optimization of control parameters and self - adjusting pid control strategy based on fuzzy logic. several main achievement and results are obtained and shown as follows : the electric - hydraulic pilot valve driven by step - motor is firstly proposed, which solves the problem that the electric - hydraulic converter of hydraulic turbine governor hydraulic servo is prone to be stuck and blocked and improves the systemic stability greatly
本文根據水輪機調節領域存在的問題和發展趨勢，對水輪機調速器的液壓控制系統、頻率測量環節、離散調節系統穩定性與調節參數最優整定以及適應式參數自調整pid控制策略進行了研究，得到以下主要成果和結論：首次提出了採用步進電機驅動的步進式電液引導閥，從根本上解決了水輪機調速器電液隨動系統中存在的電液轉換元件發卡、堵塞問題，使電液隨動系統的可靠性大大提高。In the international political theory, the hard power to the importance of realism, many scholars believe that the study of military force in international relations is the most important international political power factor, and in some writing, such as french scholar raymond aron ’ s " peace and war ", the well - known u. s. international relations scholar kenneth waltz ’ s " man, the state and war ", the theoretical study of war as the core of international politics
新軍事變革成為霸權主義國家推行霸權的利器，而各地區大國也通過新軍事變革的契機爭奪戰略主動權，對發展中國家來說卻既面臨著機遇又充滿了挑戰、壓力與威脅;利用軍事手段解決國際爭端的趨勢更加泛化，新一輪軍事競爭更加激烈，同時也為多元沖突提供了新手段。The development of ship automation puts more requirement on the quality of electricity, whose standard can no longer be met by the traditional mechanical hydraulic pressure or analog speed regulator of marine diesel - engine generator system. as a result, speed regulator based on electronics and microcomputer appeared
船舶輪機自動化的發展，對船舶的供電質量的要求也越來越高，傳統的柴油發電機組的機械、液壓或模擬式調速器已不能滿足這種要求，因而出現了電子的基於微計算機的雙脈沖調頻調載調速器。Main propulsion equipments have been gradually improved. in addition, some additional systems are provided, such as the power station, deck machinery, refrigeration and air condition plant, freshwater generators, drinking water system, steam generating system, ballast and bilge system, and fire fighting system. the management of ship ' s power plant is also known as the engineering management, which is supervised and controlled by the engine department under the direction of the company ' s engine technology management department of the headquarters. owing to the complexity of power plant, the changeability of navigational conditions, and the seriousness of accident ' s consequences, it is essential to explore how to manage the power plant economically and reduce the occurrence of troubles so as to raise the shipping efficiency
隨著科學技術的發展，不僅推進設備逐步得到完善，而且還增設了諸如船舶電站、起貨機械、冷藏和空調裝置、制淡水裝置以及飲水、蒸汽、壓縮空氣、壓載、艙底、消防等系統。船舶動力裝置的管理即輪機的管理，是在船公司機務部門指導下由船上輪機部具體負責實施。因為船舶動力裝置的復雜性、船舶航行條件的多變性、發生事故後果的嚴重性，所以探討如何對輪機進行經濟性管理，減少故障，從而提高船舶的營運效率非常重要。Based in the history and basic principles of screw compressor, this paper systematically studies, analyses and develops a new semi - hermetic screw compressor with a pair of speed increase gears and a new water chiller with the new compressor
本文從螺桿壓縮機的發展和基本理論研究出發，針對一種帶增速齒輪的半封閉螺桿壓縮機和由此壓縮機所組成的冷水機組進行系統的研究、分析與開發。In the aerodynamic optimization design of turbomachine, the approximation model methods enable to balance the computational cost and accuracy, whose successful applications in centrifugal compressor impeller, diffuser, and mixed - flow pump impeller designs are introduced to show a wide engineering foreground
基於統計學理論提出的近似模型方法有效地平衡了基於計算流體動力學分析的葉輪機械氣動優化設計中計算成本和計算精度這一對矛盾，在離心壓氣機葉片擴壓器、葉輪和混流泵葉輪設計等問題中得到了成功應用，展示了廣闊的工程應用前景。The company is active in technological innovation and developing recycling economy, the project called " 3000kw carbon black wasted gas electric power generation " was at working in oct 2005 and integrated into the power line immediately which made full use of the burning of the wasted gas caused on the course of the carbon black production with the water heated to certain level to work the electric power machines ; by doing which, the company not only saves raw materials but generate the electric power, at once, the company is in compliance with the national policy to develop the recycling economy
公司積極加強技術改造，發展循環經濟，建設的炭黑尾氣發電項目於2005年10月份投產運營，並一次並網成功。該項目是利用炭黑生產中產生的尾氣燃燒加熱軟水產生的次中壓蒸汽帶動汽輪發電機做功，產生電能，是對廢氣的綜合利用，環保和節能效果顯著。符合國家發展循環經濟，建設節約型社會的政策。Ultra - supercritica thermal power unit is the direction of thermal electric generation development. this paper analyze the key technology of ultra - supercritica steam turbine on the basis of introducing ultra - supercritica units operation especially the influence of steam temperature and pressure increase on steam turbine reliability
超超臨界機組是火力發電未來的發展趨勢，本文在介紹國外超超臨界機組的運行情況的基礎上，總結分析了超超臨界汽輪機發展的關鍵技術，主要是蒸汽溫度和壓力升高對汽輪機可靠性的影響。分享友人