primary pipe 中文意思是什麼
primary pipe
解釋
敞開形縮孔-
This article aims at the boiler ' s problems in operation : 1 ) under nominal load, the smoke temperature at the outlet of hearth reaches 1200, far more exceeds 1050 the original designed temperature. this will always result in slag inside boiler and the temperature of overheater ' s pipe superheat, so that boiler cannot take nominal load and all these influence boiler ' s nomal operation heavily, 2 ) this article also studied the reason why the assistant oil becoming necessary when coal changes. during the nomal operation, many factors ( makeup of combustor and its disposal, smirch and encrust of water wall, excessive air coefficient, temperature of primary air, coal type and density of coal dust ) can deviate the designed working conditions, then affect the boiler ' s nomal operation
本文針對該鍋爐在實際運行中存在的問題：在額定負荷下，爐膛出口超溫、低溫段過熱器前煙溫高達936 ，遠遠超過815的設計值；噴燃器四周水冷壁結焦嚴重，過熱器管壁溫度超標，無法帶上額定負荷；甚至有時因燃煤質量的變化，必須投油助燃的嚴重情況進行了分析研究。在實際生產過程中，燃燒器的結構、布置，水冷壁的粘污、結垢，過剩空氣系數、一次風溫、煤種及其濃度變化等許多因素都會偏離鍋爐的設計工況，從而影響爐內的傳熱和燃燒，造成爐膛出口超溫、水冷壁結渣等問題。 -
The original sovent fitting grants a flush performance of a single stack drainage system of 8. 7l s without additional primary ventilation pipe
使用吉博力蘇維脫管件，無需另外的通風管立管，其立管最大排水能力可達8 . 7升秒。 -
The paper analyzes the non - lineal relations of the quantity of heat exchange and water flux of coil exchanger in part - load operating condition, the shortage of deciding the water flux in bypass pipe, the disadvantage that the operating condition of pumps and chiller ca n ' t be met with the load change of the air conditioning system in different operating condition of using pressure - difference bypassing control in primary water pump system. using load control method in the change of the operating condition of primary water pump system can realize that the load change is small and reasonable in the on / off condition of pumps and m m chiller by comparing load control method in primary variable - flow water pump system with pressure - difference bypassing control method, back water temperature control method
本論文從目前空調工程中使用的變流量水系統入手，研究了盤管換熱器在部分負荷下水流量與換熱量的非線性關系，分析了文獻中介紹的旁通管通流能力選擇的不足之處和一次泵水系統採用壓差旁通控制時，工況轉換不能滿足系統控制要求的缺陷；比較了一次泵變流量水系統中壓差旁通控製法、回水溫度控製法、負荷控製法的精確性，並得出了在一次泵水系統的工況轉換時，採用負荷控製法能使冷水機組及其相應水泵在啟停時的負荷變化范圍較小，更符合建築物的冷量需求，節能效果較好的結論。 -
In this system, mean velocity pipe is applied to transform the air velocity signal into pressure difference signal, and then the pressure difference signal is input into pressure difference transmitter to realize the transform of the pressure difference signal from non - electricity signal to electric current, and through the resistance in the corresponding sampling circuit the electric current is transformed into voltage signal ; the thermocouple is used as the primary element to realize the transform from temperature signal to the voltage signal ; under the control of communication agreement module, diversified voltage signal is transported into computer by way of a / d conversion module, and then the monitoring software compiled beforehand is transferred to deal with all the voltage signals relatively, the result of which is conveyed to relative interface to display
該裝置具有三個特點：一是採用表面式測溫方法，有效地減少了元件的維護與損耗；二是採用工業控制計算機及信息就地採集、數據總線傳輸的方式，充分利用計算機和數據自動採集方面的技術，實現各種參數的在線測量，監測指標全面，能與dcs系統聯用，具有技術先進性和一定的前瞻性；三是採用顯示器配工業觸摸屏的顯示方式，為現場運行人員提供了簡單、易學、方便的操作模式。本裝置自2001年8月投入運行以來，有效地幫助、指導運行人員進行燃燒調整，對于鍋爐和機組的安全、經濟運行發揮了重要作用。 -
Combustion system of power plant boiler is taken as the research object of this thesis. the research mainly focuses on the faults of boiler combustion system, such as flame center deflection, powder feed inequality or break, primary air pipe jammed, spontaneous combustion, and backfire or kill in burner spout
本文以電站鍋爐燃燒系統為研究對象，主要圍繞鍋爐燃燒系統運行中可能出現的爐膛火焰中心偏斜、給粉機下粉脈動、一次風管道內堵粉、自燃、燃燒器噴口回火、滅火等故障展開研究。 -
The simulation shows that the valve throttle area should be little as possible but must be more than 40 % of pipe section area ; when the total length of pipe is same, and the flow quantity is enough, pipe before primary valve should be thin and long, and the pipe after primary valve should be thick and short, the upriver and downriver small pressure fluctuation will badly lead to waterdrammer pressure rising, and spending more time in establishing pressure and flow quantity
模擬表明，閥門過流面積在滿足大於管道截面積40 %的條件下應盡可能小;在管道總長一定並滿足流量要求的條件下，主閥前應採取長而細的管道，閥后則應採用短而粗的管道;上下游微小的壓力波動都會嚴重增大開關閥門引起的水擊，並使壓力、流量的建立需要更長的時間。 -
The research point that erosion of pipe network, scale, propagation of microoganism, byproduct of chlorine residual, environment second pollution and seepage of anticorrosive are primary reasons causing water quality pollution of second water supply system
對在調查檢測中出現的污染問題進行分析研究，指出管網腐蝕、結垢、微生物繁殖、余氯產生的副產物、外界的二次污染以及防腐襯里滲出物這幾個方面的因素是造成二次供水系統水質污染的主要原因。 -
The study shows that compared with the energy consumption of conventional central air - conditioning system with primary return air, the heat pipe air - conditioning system can save cooling and reheating energy
研究結果表明：在相同的室內設計溫度下，採用熱管式空調機組處理空氣的一次回風集中空調系統比常規的一次回風集中空調系統節省冷量和再熱量。 -
Taking an office building in guangzhou as an example, this paper investigated the energy consumption of a central air - conditioning system with primary return air using heat pipe air - conditioner at different indoor design temperatures
摘要以廣州地區的辦公建築為例，就一次回風集中空調系統在空氣處理過程中採用熱管式空調機組時，不同室內設計溫度下的空調系統能耗進行了分析，並且與常規的一次回風集中空調系統的耗能量進行了比較。 -
Primary research about the analysis of pipe - network for fluid supply by matlab
分析流體輸配管網的初步研究 -
The analysis of electricity consumption about regulating primary pipe network of a typical district heating system
集中一次網供暖系統優化調節的電耗分析 -
This the production thread application plc carries on procedure control, and realizes to crowd out machine owner ' s electrical machinery and synchronization towing the mechanical and electrical machine is transferred fast ( ly ), and the installation has the good man - machine interface, and all technology parameters all can be set up and show by way of touching the screen, and producing to consult the menu, the order name was formerly fixed in the input, and whole production line just can be according to primary pipe specifications and speed production fixing every time ; cutting the function voluntarily fixed long ( ly ) cuts, and a pattern head temperature is controlled to use the import intellect warm accuse table ( making the temperature deviation within ), therefore having pledged the quality of tube
本生產線採用plc進行程序化控制，實現擠出機主電機、牽引機電機的同步調速，並設置有良好的人機界面，所有工藝參數均可通過觸摸屏進行設置和顯示，每次生產只需查閱菜單，輸入原先設定序號，整條生產線就可按原設定的管子規格和速度生產；切割機能自動定長切割，模頭溫度控制採用進口智能溫控表（使溫度偏差在1內） ，因此保證了管材的質量。 -
The construction of roads and pipes " is established, and the primary mission is to " quicken the municipal infrastructure construction and construct the cbd traffic and pipe network according to international standards "
以「加快市政基礎設施建設，構建國際標準的cbd區域交通、管網體系」為主要經營任務。 -
Adopts the variable - primary - flow two - pipe chilled water system
空調水系統為變流量一次泵兩管制系統。 -
For the problem that on - line monitoring of primary air of direct firing pulverizing system ca n ' t be complete achieved, the chaotic properties of parameter change of two - phase flow in pipe is analyzed in the paper, according to the pressure difference signal of two - phase flow system
目前電站鍋爐直吹式制粉系統的一次風氣固兩相流流動狀態在線監測仍未得以實現，針對這一難題，本文首次基於管道內氣固兩相流差壓信號對其流動狀態變化的混沌特性進行理論研究。 -
The turbulent flow in a circular pipe is one of the most primary flow in the theoretical research and application
流經等截面直圓管的湍流是理論研究和工程應用中最主要的流動形式之一，對它的研究是湍流研究中一個古老而常新的課題。 -
At present, the study of water in smooth helical tube, of which the main work is about critical heat flux ( chf ), is the primary concern of the research about the two - phase flow and heat transfer in curved pipe
目前螺旋管內兩相流動傳熱研究主要以光滑螺旋管內的兩相流動傳熱為主，其研究重點為臨界熱流密度（ chf ） ，但對製冷劑在微肋螺旋管內兩相流動傳熱還鮮見報道。
分享友人