pump out valve 中文意思是什麼
pump out valve
解釋
抽空閥-
When piston pump is applied force upward and movces, the lower check valve is opened, the fluid of upper pump chamber flows out of outlet when the piston runs upward
當泵柱塞受力向上移動時，下止回閥打開，液體湧入下泵室中，泵進行進料的過程，上止回閥關閉，上泵室中的流體在柱塞上行時由出口端擠出。 -
When pump is applied force downward and moves, the lower check valve is closed, the fluid in the pump is extruded and charges upward out of upper check valve, then flows into upper pump chamber, because that the piston has volume, some fluid flow out of outlet due to the reduce of spatial fluid volume in upper pump chamber
當泵的柱塞受力向下移動時，下止回閥關閉，泵中的液體受擠壓而向上沖開上止回閥而流入上泵室中，由於柱塞本身佔有體積，部分的流體因上泵室內空間流體積的減少而自出口端流出。 -
Abstract : the concrete pump pumping out of step the reason of is analyzed, and through fitting gas valve, the question is settled
文摘:分析了混凝土輸送泵泵送不同步產生原因，通過安裝排氣閥解決該問題。 -
Wolong pump valveproduct set out uhb - zk catena of mortar pumps china anhui wolong pump valve co., ltd
臥泵閥臥氟泵產品展示uhb - zk系列耐腐耐磨砂漿泵 -
The authors carry out data collection and calculation for fuel injection pressure and needle valve lift signals measured on the fuel pump test bed by using self - developed software. on the basis of experiments, four criteria for analysing fuel injection process are proposed and the comparison of performances between au and nu type fuel outlet valves is made
作者用自行開發的軟體對在油泵試驗臺上測得的噴油壓力、針閥升程信號進行了數據採集和計算，在試驗的基礎上提出了分析噴油過程的四個判據，給出了au型和nu型出油閥的性能比較結果。 -
It specifies the process of the design, simulation and experiment of liquid cooling system. main contents of the thesis are as follows : description of the present usage of liquid cooling system, presentation of a new type of liquid cooling system and description of its work principles ; design of the liquid cooling system, which mainly deals with the design and collating calculating of serpentine condenser and heat exchangers adopted in this system. meanwhile, the model chosen calculating of compressor 、 thermal expansion valve 、 plate evaporator 、 water pump and the like equipment used in the system are also carried out
本文的主要內容如下:對液冷源使用現狀進行了描述，提出了一種新型液冷源系統並對其工作原理進行了闡述;對系統進行了設計，主要對系統中所採用的管帶式冷凝器和水側空/液換熱器進行了設計和校核計算，同時對系統中所用到的壓縮機、熱力膨脹閥、板式蒸發器、水泵等配套設備進行了選型計算;分別對製冷系統和冷卻液循環系統進行了數學建模。 -
In the recent years, as the proportion of mechanic industry in nation economy increases, the requirement for safe operation of mechanic equipment is higher and higher. due to that all kinds of technology are progressively applied to mechanic equipment fault and diagnosis, such as signal processing, pattern recognition, etc., mechanical equipment fault and diagnosis technology has been developed rapidly all over the world. the reciprocating pump as a part of mechanic equipment field takes up very important station in production department, such as the petrochemical industry. because its applications are very widely, making researchs about its fault and diagnosis has important meaning. though people have already made out some researchs and obtained some research results, but the total diagnosis level is not still very high. based on former research results, according to the strong non - stationary characteristic of the pump valve signal of the reciprocating pump, this text introduces hilbert - huang transform ( abbreviated as hht ), and diagnosed the pump valve faults of the reciprocating pump well
雖然人們已對其開展了不少研究並取得了一些研究成果，但總的診斷水平還不是很高。本文在基於前人研究成果的基礎上，根據往復泵泵閥信號的強非平穩特性，引入了希爾伯特-黃變換（簡稱hht ） ，對往復泵泵閥較好地進行了診斷。往復泵由於其結構復雜，激勵源多，故其信號為強非平穩信號，對其進行故障特徵提取和診斷比較困難，所以本文主要研究了往復泵泵閥振動信號的特徵提取方法。 -
Because reciprocating pump has complicated structure and more exciters, so its signal is a strong non - stationary signal, and carrying out fault feature extraction and diagnosis is very difficult to it, this text mainly researches on featute extraction of reciprocating pump ’ s valve vibration signal. this text introduces hht that huang put forward, it is a kind of signal processing method that suits for dealing with the stationary signal, and suits for non - stationary signal also. although the hilbert - huang transform ( hht ) is an effective tool processing the non - stationary signal, the hht based on emperical mode decomposition ( abbreviated as emd ) algorithm which adopts the cubic spline interpolation could n ' t acquire accurate characteristics for the strong non - stationary signals in that the spline produces an accurate result only under the condition that the data consists of values of a smooth function
本文引入了huang等人提出的hht ， hht是一種既適合於處理平穩信號也是一種適合於處理非平穩信號的信號處理方法。盡管希爾伯特-黃變換（ hht ）是處理非平穩信號的有效工具，但基於經驗模態分解（簡稱emd ）的hht由於採用三次樣條插值而不能準確提取強非平穩信號的特徵，因為三次樣條插值只有在數據由光滑函數值構成的情況下才能產生精確的結果。為了解決這個問題，本文提出了基於改進的emd演算法，即採用分段三次hermite插值多項式（ pchip ）作為極值包絡的方法。 -
Valve accept tension parts or the pipe of inside and outside, use it s unique capability in resisting strong decay medium aspect to crank out the products, such as each kind of pump, valve and piping. etc.
樹脂f46或型材經加工採用模壓或鑲嵌方法置於鋼質或鐵質的泵閥承壓件的內壁或管件的內外表面，利用其在抗強腐蝕介質方面的獨特性能製做成各類泵閥管道等產品。
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