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一、 概述GENERAL
TMC型泵在船舶上可作壓載、艙底、冷卻等用途，
使用介質(zhì)為海水和淡水。
1．結(jié)構(gòu)緊湊，零部件少；占地面積小，維護(hù)費(fèi)用低。
2．水力上采取了無(wú)過(guò)載設(shè)計(jì)（即功率曲線有極值），使得
泵在任何工況下運(yùn)行都不會(huì)產(chǎn)生超載問(wèn)題。
3．*的水力設(shè)計(jì)，使泵具有優(yōu)良的汽蝕性能，從而使
得泵在偏離設(shè)計(jì)工況以及進(jìn)口條件比較惡劣的情況下運(yùn)
行都能有效地避免汽蝕。
TMC type is used chiefly for cooling fresh
water ,cooling sea water ,sea water service ,bilge & ballast ,ballast sercice .
1. A little of maintenance costs .
2. The shaft power curve have a highest ponit, so it is not to overload the motor power in any conditions .
3. The impeller is of single suction and in order to improve suction performance Francis vanes are adopted .
二、結(jié)構(gòu)型式和材料 Constructionand Materials
該泵為臥式單級(jí)單吸結(jié)構(gòu)，主要有泵體，泵蓋，葉輪，泵軸，托架，剛性聯(lián)軸器，軸封等組成。
泵軸和電機(jī)軸通過(guò)剛性聯(lián)軸器聯(lián)結(jié)，葉輪通過(guò)鎖緊螺母與鍵固定在軸上。
泵軸封可根據(jù)需要采用填料或機(jī)械密封兩種形式，并且都有獨(dú)立的沖洗系統(tǒng)，當(dāng)水質(zhì)情況較為惡劣時(shí)，可根據(jù)需要加裝濾器或旋流器。
TMC type single stage & single suction pump is permitted overhauling without removing the suction and discharge piping .
It is so designed that axial thrust force becomes almost zero at the normal condition . The pump rotating element is rigidly connected to the motor shaft through closed coupling and supported by the ball bearing of the motor.
The shaft sealing is mechnical or gland-packing.
