From the viewpoint of the characteristics of two - phase liquid sand slurry wear, combined with the examination and study on easily damaged workpieces, the wear failure ' s basic rules are pointed out, of the pump shell and the cutter - piece on service, and the general principles of material wear - resistant designs put forward. the sand slurry abrasion tester has been designed and developed which can simulate general dredging conditions. summarized and presented are the position - exchange measuring method of sand slurry abrasion test and the experiment specification of sand slurry wear test of dredging conditions
文中系統論述了作者在疏浚工況泥
沙磨損機理及其耐磨新材料課題研究中的工作成果，主要研究內容和創新點如下：總結分析了磨損研究動態和提高材料耐磨性的方法；從兩相流泥
沙磨損的特點出發，結合對失效易損件的考察研究，分析指出了現役泥
泵殼和絞刀片磨損失效的基本規律，提出了材料耐磨損設計的基本思想；設計研製了能模擬疏浚工況的泥
沙磨損試驗機，總結提出了泥
沙磨損試驗換位測試法和疏浚工況泥
沙磨損試驗規范。
New - type water - saving irrigation equipment : complete equipment of highly efficient sprinkler irrigation and drip irrigation, sand prevention and control irrigation equipment, long - distance self - test control system of well group network in well irrigation area, key component and self - control system of water - saving irrigation equipment, microspray irrigation equipment, irrigation and drainage engineering equipment, various kinds of farm pumps, instruments and meters, and machinery of water - saving agricultural technique and agricultural engineering, etc
新型節水灌溉設備：高效噴灌和滴灌成套設備、防
沙治
沙灌溉設備、井灌區群井環網遠程自檢測控制系統、節水灌溉裝備關鍵部件和自控系統、微噴灌設備、灌排工程裝備、各種農用
泵、儀器儀表、節水農業技術及農田水利工程機械等。
Based on the hydraulic model test of zhaojiabang pumping station in shanghai, a much more thorough study was made on the hydraulic and sediment deposition characteristics in this paper
本文結合上海市肇嘉浜雨污水合建式
泵站水力模型試驗研究課題，對大型多機組
泵站圓形集水池的水力特性和泥
沙淤積特性進行了較全面的研究。
With the project, presents the design points of the air conditioning system and hot water system served by a water - source heat pump system
摘要介紹了聖淘
沙酒店水源熱
泵空調及熱水系統的設計要點。
Engaged in the draft design and inspection of huaian 3nd pumping station, siyang 2nd pumping station, liulao jian pumping station and saji pumping station
江蘇省淮安第三抽水站、泗陽第二抽水站、劉老澗抽水站、
沙集抽水站四大
泵站的初步設計審查。
The water could also go through tunnel of the plover cove system and arrived at the lower shing mun reservoir and then to the shatin treatment works to supply water for the urban area. the capacity of the dongshen water supply scheme has been uprated three times
該輸水管自梧桐河
泵房經上水、粉嶺抵達大埔頭后，可經過
泵房注入大埔頭，至下城門水塘輸水隧道轉
沙田濾水廠，供應市區。
Until now, there have been a few reports on the damage of the water pumps caused by sand and water cavitation. by use of the test loop for solid and liquid two phases, under the condition of 3 % head drop, the damage location and relative degree of the sand and water cavitaiton occurred on the impeller were tested and researched. the result was, them, compared with the results under the condition that water cavitation occurred and no cavitation but only wear occurred. the differencts were analyzed. the analysis result can be used as the basis of the further research and the improvement of the impeller shape
目前含
沙水汽蝕對水
泵損傷方面的報導甚少，本文利用固液兩相流試驗臺，對離心
泵閉式葉輪在含
沙水汽蝕時（ 3揚程下降點）的損傷部位和相對程度進行了試驗研究，並將此結果與清水介質發生汽蝕時的損傷情況[ 13 ]及含
沙水無汽蝕情況下的磨損情況[ 7 ]相比較，對其差異進行了分析，為今後進一步探討葉輪損傷機理和葉型改進提供了實驗依據。
The poor flow patterns are inclined to exist in the round sump which is not designed properly and then the inlet condition of the pump is not good, which makes the efficiency of the pump unit drop and causes vibration. if there are a lot of sediments in the water flow, the problem of sediment deposition is to be solved
圓形集水池由於其結構的特殊性，設計不當易導致池內流態紊亂、水
泵吸水條件差，繼而影響水
泵的正常運行，導致水
泵機組效率下降、振動等，如果來水含有泥
沙則易產生泥
沙淤積。
Fluid machinery in these areas is damaged due to cavitation and sand abrasion, which has threaten directly the safety operation of hydraulic and hydroelectric engineering, causing huge economic losses. the research, therefore, on the combined effect of cavitation and sand abrasion is of great significance. the researchers at home and abroad have done a lot of work on this issue
我國許多河流的含
沙量較大，如著名的黃河幹流年均含
沙量達37 . 9m ~ 3 / s ，黃河三門峽的年平均輸
沙量達16億t ，這些地區使用的
泵、水輪機等許多流體機械都在夾
沙水流的作用下，受到了
沙粒磨損與空化剝蝕的聯合破壞，這種破壞直接危害了水利水電工程的安全運行，造成了巨大的經濟損失，因而對含
沙水流條件下空化剝蝕與泥
沙磨損聯合作用進行研究有著很大的工程實際意義。
Meanwhile, because there are a lot of sediments in sewage in the forebay, the bad flow pattern will make sediments depositing freely and the sediment deposition will cause worse flow pattern
同時，由於排污
泵站進水水流中含有大量的懸浮固體顆粒，不良的前池流態會使泥
沙更容易在前池淤積，而泥
沙淤積又進一步加劇了前池流態的惡化。
Introduction malston ( beijing ) piping system co., ltd is a high - technology enterprise registered in beijing zhongguancun changping science and technology park, which has a manufacturing factory of 13600 square meters situated on the roadside of xishatun of badaling highway. our company applies itself to sanitation equipments, pumps, valves, piping spare parts developing and manufacturing on biological engineering, pharmaceutical manufacturing, cosmetic, beverage and other fields
介紹邁思通（北京）管路系統有限公司是在北京中關村科技園昌平科技園區注冊的高新技術企業，佔地面積13600平方的製造工廠坐落在八達嶺高速公路旁的西
沙屯，致力於生物工程、制藥、化妝品、飲料等領域的衛生級設備、
泵、閥門、管路配件的研發與製造。
Determination of match power in electric motor of the muddy water source pumping station
多泥
沙水源
泵站電動機配套功率的確定
The sediment deposition decreases with the increase of the number of running pumps and the inflow discharge
隨著水泵開泵臺數的增加和進水流量的加大，可改善池內的泥沙淤積。
