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fluid pressure 流體壓力,流體靜力學壓力。

fluidic

Base on the kinematics relation of ctp , the corresponding reynolds equation or average reynolds equation , fluid film thickness equation under qusi - stable state in polar coordinates , balance equations of load and moments under full - film contact and partial - film contact states were set up respectively . these model equations were calculated by the finite difference method , and the instantaneous 3 - d distribution of fluid pressure and the slurry film was simulated by the matlab software 根據ctp的運動關系,分別建立了極坐標下,全膜接觸工況時的非穩態牛頓流體在ctp過程中的一般reynolds方程、流體膜厚方程、載荷平衡方程和轉矩平衡方程,以及部分膜接觸工況下的平均reynolds方程、平均膜厚方程、接觸壓力方程、總載荷平衡方程和總轉矩平衡方程。

In pumping fluid with gas , pressure boost can be improved by enhancing the pump rotation speed , thereby improving the performance of the pump to a certain degree ; when the gas content is constant , by increasing the inlet pressure , the pressure boost can be enhanced and the pump efficiency be improved remarkably ; when the gas content is rather high , there will be a problem of matching between the gas pressure and the fluid pressure ; the performance of the multiphase pump can also be improved by means of rational design of buffer vessel and homogenizer 試驗分析認為,氣液混輸工況下,提高泵轉速可以提高增壓,在一定程度上能改善多相泵的工作性能;含氣率一定時,增加進口壓力,可使多相泵增壓值增大,泵效明顯增加,最大含氣率點后移,但含氣率很高時,存在氣液壓力相匹配問題;改進緩沖罐和均化器的設計,有利于氣液互相夾帶,避免氣囊產生,可改善多相泵的輸送性能。

Air piston pump adopts the theory that “ pressure “ applying force on various areas and can produce various “ acting force “ , the pump takes the origin that the compressed air is compressed energy , and transforms the pressure of compressed air into more fluid pressure , pressing fluid move in order to achieve the aim of high viscosity and ultra - viscosity fluid 氣動柱塞泵是利用“壓力”在不同的面積上施力,產生不同“作用壓力”的原理,以壓縮空氣為壓力能量的來源,將壓縮空氣的壓力轉換成更大的流體壓力,壓迫流體移動,進而達到輸送高黏度及超高黏度流體的目的。

Thirdly , cbt ' s characteristic of the strain v . s . the applied pressure is studied , on the basis of this , a new scheme of the straight bourdon tube ( sbt ) is presented , a sbt is designed and fabricated , and then the strain - pressure characteristics of both the cbt and sbt are measured experimentally using a strain measuring technique , a comparison between the cbt ' s and sbt ' s strain characteristics is also made . finally , theoretical models of a fbg fluid pressure sensing system scheme based on the bourdon tube are developed , and a fbg - based fluid pressure sensing system using the transverse strain - pressure characteristic of the sbt is designed and set up 首先,詳細介紹了fbg的基本光學傳感特性,并測量了fbg的溫度、應變特性;其次,研究了c型彈簧管的位移?壓力特性,并利用ccd成像和計算機圖像處理技術對其進行了非接觸測量;再次,研究了c型彈簧管的應變?壓力特性,在此基礎上提出直彈簧管的設計方案,并制作了直彈簧管,采用應變測量技術對c型彈簧管和直彈簧管的應變?壓力特性分別進行了測量,對兩者的應變特性做了比較;最后,建立了基于彈簧管的fbg壓力傳感系統理論模型,設計完成了基于直彈簧管橫向應變?壓力特性的fbg流體壓力傳感系統。

Ak series intelligent pressure transmitter which is universal intelligent series transmitter , it introduced advanced production technology from america and japan adopts the world leading technique , pass through strict quality control . this kind of transmitter is searched and developed independently by our company that is pressure detect transmit unit in the industrial automation control system . it measures fluid pressure in the industry process and converts it into 420 ma dc signal output ; at the same time , it may be remote parameter setup , remote control , self - diagnosis by field hart protocol 是引進美國和日本的先進生產工藝,采用世界領先技術,經過嚴格的品質管理,由我公司自行研制和開發的通用智能型系列變送器,是工業自動化控制系統的壓力檢測變送單元,它測量工業過程流體壓力,將其轉化成4ma 20ma dc信號輸出,同時通過現場hart協議可進行遠程參數設定遠程控制自診斷等功能。

The effects of pitch angle , rolling angle , pad velocity , rotation speed and standard nominal clearance on load and moments were obtained by analyzing the numerical results , and the effects of external load , external moments ( x - axis and y - axis ) , rotation speed and pad velocity on fluid pressure distribution , on tilt angles , azimuth angle and standard nominal clearance are further studied . the reason for the existence of negative pressure in ctp and its effect on the polishing result was discussed . it is proved that ctp can achieve the best 通過對仿真結果的分析,給出了工件傾角、轉角、拋光速率、角速度及中心膜厚等主要研拋參數變化時工件的承載能力變化,也即壓力積分載荷、壓力轉矩的變化;分析了外加載荷、 x / y軸轉矩、拋光速率、角速度變化對加工過程中工件偏轉角、方位角及中心膜厚的影響;討論了全膜接觸模型中負壓產生的原因及對研拋結果的影響。

View the rock masses as equivalent continuum media characterized as anisotropic material , equivalent elastic matrix of equivalent continuum media mod el is formed based on strain adding theory , and then principal model is arrived , two dimension finite element equations are formed according to the galerkin finite element method which takes both displacement and fluid pressure as un - known variables 把巖體視為具有各向異性本構關系的假想等效連續體,考慮了裂隙剪切變形非線形特性,根據應變疊加原理,推導出了等效彈性矩陣,從而得到裂隙巖體等效連續介質模型的本構模型。

Wide plus ak series intelligent pressure transmitter which is universal intelligent series transmitter , it introduced advanced production technology from america and japan adopts the world leading technique , pass through strict quality control . this kind of transmitter is searched and developed independently by our company that is pressure detect transmit unit in the industrial automation control system . it measures fluid pressure in the industry process and converts it into 420 ma dc signal output ; at the same time , it may be remote parameter setup , remote control , self - diagnosis by field hart protocol Wideplus - ak系列智能壓力變送器是引進美國和日本的先進生產工藝,采用世界領先技術,經過嚴格的品質管理,由我公司自行研制和開發的通用智能型系列變送器,是工業自動化控制系統的壓力檢測變送單元,它測量工業過程流體壓力,將其轉化成4ma 20ma dc信號輸出,同時通過現場hart協議可進行遠程參數設定遠程控制自診斷等功能。

Along with the raising of parameter and the increase of unit capacity , it is more and more complex to start and run , the safety of unit also becomes more and more important the mechanical regulating system of fluid pressure type that adopts always can not be already complete to satisfy the requirement of production , especially the generation set of large scale power plant 隨著機組容量的增加和參數的提高,啟動和運行變得越來越復雜,機組的安全性也變得越來越重要,一直采用的機械液壓式調節系統已不能完全滿足生產的要求,特別是大型火電發電機組的要求。

A digital image - based ( dib ) technique was proposed to characterize and quantify the heterogeneity of rock , and it was implemented into rfpa ( rock failure process analysis ) code in order to simulate the complete failure process of rock under both the external loading and fluid pressure 本文提出了用數字圖像處理技術表征巖石非均勻性的基本方法,并通過把該技術實施到巖石破裂過程分析程序rfpa中,來模擬非均勻巖石在外載荷和滲流耦合作用下發生破裂的整個過程。

This valve is normally automatic work , in a direction of flow of fluid under pressure , the globe valve opening ; the opposite direction of fluid flow , the fluid pressure and the self - valve coincidence role in the valve seat valve , thereby cutting off flow 通常這種閥門是自動工作的,在一個方向流動的流體壓力作用下,閥瓣打開;流體反方向流動時,由流體壓力和閥瓣的自重合閥瓣作用于閥座,從而切斷流動。

It measures fluid pressure in the industry process and converts it into 420 ma dc signal output ; at the same time , by field bus hart protocol it may be remote parameter setup , remote control , self - diagnosis function and so on 它測量工業過程流體壓力,將其轉化成4ma20ma dc信號輸出。同時通過現場總線協議可進行遠程參數設定遠程控制自診斷等功能。

The fluid pressure pulse in seawater piping system can cause flow - noise that badly affect the environment and worker in health , even lead to deterioration in operation security of piping system 海水管路系統流體壓力脈動及其引起的流噪聲對環境及人員的身體健康有許多不良影響,也會降低管路系統自身工作可靠性。

Therefore , cap rocks with bedding faults can seal higher hydrocarbon column height and fluid pressure , and thus facilitates the formation of larger scale hydrocarbon accumulations 如果蓋層中發育順層斷層,蓋層的封蓋能力將被大大改善,將能夠封蓋更大的油氣高度或者流體壓力,利于形成更大規模的油氣藏。

It is burial and fluid pressure development history and so on . the time and space domains is solved by the method of iteration in circles and finite element respectively 主要采用數值計算和模擬等手段,在模型實現中采用了循環迭代法和有限元法分別對時間域和空間域進行求解。

The results of experimental investigation on heat transfer and fluid pressure drop of spirally fluted titanium - tubes for steam condensation are reported and analyzed 摘要介紹了鈦螺紋槽管傳熱及流動阻力的實驗結果,并對結果進行了分析。

Kai xuan - check cast steel valve in the fully open state , almost unimpeded fluid pressure , the pressure drop through the valve relatively small 旋啟式止回閥在完全打開的狀況下,流體壓力幾乎不受阻礙,因此通過閥門的壓力降相對較小。

It measures fluid pressure in the industry process and converts it into 420 ma dc signal output ; at the same time , by field bus hart protocol 它測量工業過程流體壓力,將其轉化成4ma20ma dc信號輸出。

Heat sink for power semiconductor device part 2 : measuring method of thermal resistance and input fluid - output fluid pressure difference 電力半導體器件用散熱器第2部分:熱阻和流阻測試方法