Winding tower A winding tower also known as a headframe, poppet head or pit head is a construction from steel and concrete, built over a vertical mine shaft.

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In chapter 7, the DPIV (Digital Particle Image Velocimetry) systems is set up, the physical models such as sudden expansion channel, flow-out poppet valve and spool valve is fabricated.

第七章建立流場DPIV實(shí)驗(yàn)可視化系統(tǒng)国产日韩制服丝袜第一页，制做突然擴(kuò)大流道模型，外流式錐閥模型和滑閥模型国产日韩视频合集一区，并利用粒子圖像測速技術(shù)對模型的速度場進(jìn)行測量三级电影网址。

We know you're here, poppet.

我們就知道你在這男女猛烈无遮挡免费视频滚床，寶貝

How's my little poppet today?

我的小乖乖今天好嗎一级大香一级大香香蕉？

As a result , the poppet 68 is unseated and the pressure stage is transmitted through the passage 62 thus forcing the poppet 74 off of seat 72 to be dissipated in the low pressure passage 60 and the remainder of the low pressure circuit.

結(jié)果， 寶寶68 剝奪權(quán)利并且壓力階段被傳送通過段落62 如此強(qiáng)迫寶寶74 位子72 被消散在低壓段落60 和低壓電路的剩下的人欧美国产综合操逼视频。

When the pressure is low, the role of Poppet head pressure sufficient to overcome the pressure regulator spring force, Poppet Head is closed at this time there is no pressure on the oil through the damping holes on the balance of the piston movement, so a balance piston, the next two cavity pressure equal, balanced piston under the action of the spring force gently on the top of the seat, pressure port and overflow port unreasonable.

當(dāng)壓力較低時一级片高清无码在线观看不卡，作用在提動頭上的壓力不足以克服調(diào)壓彈簧力，提動頭處于關(guān)閉狀態(tài)先锋影音最新资源网站，此時沒有壓力油通過平衡活塞上的阻尼孔流動69毛片免费视频观看，故平衡活塞上、下兩腔壓力相等av网站在线管看，平衡活塞在彈簧力的作用下輕輕地頂在閥座上国产丝袜福利在线，壓力口和溢流口不通。

When the flow through the balance of the piston damping the flow of holes increases, the balance of the piston, the next increase in pressure on both sides of a balanced increase in the distance the piston increases, and vice versa reduced; and also because the spring stiffness is very small, so that shift the balance of the piston pressure required very few changes, so the flow through the Poppet head is not much change, so the first opening Poppet very few changes, to mention the pressure of moving the first opening can be said to remain unchanged, that is, when the pilot valve spring after a set, Poppet Head was opened, the balance piston chamber pressure remained basically unchanged.

當(dāng)流經(jīng)平衡活塞上阻尼孔的流量增加時少妇高潮太爽了在线观看，平衡活塞上日韩精品激情视频网站免费观看、下兩側(cè)的壓差增加，平衡活塞上升距離增加毛片基地久久伊人91x32.cc，反之則減醒侵蘧纷耘乃脚摹；又因?yàn)閺椈傻膭偠群苄∽耘墓锶蘸访朗悠翟谙卟シ牛蛊胶饣钊弦扑鑹翰钭兓苄」阪渭宋蘼胧悠翟谙吖劭矗酝ㄟ^提動頭的流量變化也不大，因此提動頭的開口變化很小人人操、人人射、人人爱，提動頭開啟的壓力可以說是不變的优优视频国内A级毛片，亦即當(dāng)先導(dǎo)閥的彈簧一經(jīng)設(shè)定后，提動頭被打開時的平衡活塞上腔的壓力基本保持不變在线观看a的网站。

Furthermore, The effects of inlet velocity, outlet pressure, opening size as well as cone angle on cavitation intensity in the poppet valve, ball valve and water hydraulic poppet valve were numerically investigated.

進(jìn)一步分析了錐閥在线无码视频网，球閥和純水液壓錐閥閥口幾何參數(shù)與邊界條件對氣穴的影響。

In order to optimize the spring of the reciprocating pump valve and establish the best spring factor matching, the unsteady opening-closing process of the poppet valve was simulated. The simulation based on computational fluid dynamics approach, and the dynamic-grid technology and User Defined Function was conducted to depict the law of motion of the poppet valve.

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The flow characteristics in a genuine poppet valve was simulated in three dimensions and calculated at its different opening positions,poppet angles and flow volumes by using a CFD software of Fluent.

運(yùn)用CFD通用軟件F luent日逼小黄片，以實(shí)際液壓錐閥為模型一级a片啊啊啊，對閥芯在不同開口度、不同半錐角以及不同流量下的流動特性進(jìn)行了三維仿真計算一级黄色AAA性爱片，并對可視化圖形進(jìn)行了分析国产激情av在线。