【導(dǎo)讀】及輔助設(shè)備的功能設(shè)計(jì)制造、結(jié)構(gòu)、性能、安裝和試驗(yàn)等方面的技術(shù)要求。分引述有關(guān)標(biāo)準(zhǔn)和規(guī)范的條文。的產(chǎn)品完全符合招標(biāo)規(guī)范書的要求。體項(xiàng)目由買、賣雙方共同商定。本技術(shù)規(guī)范書與合同具有同等效力，作為合同附件。若投標(biāo)文件和本技術(shù)規(guī)范書有偏差，請以偏差表的型式作詳細(xì)說明。本技術(shù)規(guī)范書中未填寫的部分由投標(biāo)人進(jìn)行填寫。配2臺100%容量液力偶合器調(diào)速給水泵，一臺運(yùn)行，一臺備用，如果運(yùn)行中的一臺故障，給水泵均不設(shè)前置泵，投標(biāo)方考慮有效措施防止汽蝕。選定該區(qū)域的一個工作點(diǎn)作為給水泵經(jīng)濟(jì)運(yùn)行工況點(diǎn)，以此工況點(diǎn)作為給水泵效率。給水泵組的流量與揚(yáng)程的關(guān)系曲線應(yīng)是無駝峰的運(yùn)行穩(wěn)定曲線。給水泵在最大工況下長期連續(xù)運(yùn)行，同時又滿足鍋爐各種運(yùn)行工況下給水的需量。給水泵在設(shè)計(jì)工況下的各項(xiàng)參數(shù)予保證，在最大工況下流量及揚(yáng)程給予保證。不應(yīng)在正常運(yùn)行范圍內(nèi)的任何轉(zhuǎn)速下發(fā)生異常振動。

　　

【正文】 分裂的情況下泵應(yīng)被裝有堵塞通風(fēng)口和外殼的排液口。其他泵應(yīng)僅在指定時 有這些連接 Flanged connections except main Boiler Feed water pumps shall be furnished for connection sizes ND 50 and larger. Threaded connections may be used for sizes smaller dian ND 50, subject to POLAT39。s approval. 法蘭連接處了主要鍋爐給水泵應(yīng)配備連接尺寸 No50及更大。螺紋連接可能用于更小的尺寸，都要 經(jīng)過 POLAT的批準(zhǔn)。 Flanged connections shall ply with DIN and ISO standards corresponding to material in metric codes (DIN, ND, etc.). Threaded connections shall be taper pipe threads (NPT) per DIN and ISO standards or internationally registered equivalent. Suction flange shall have the same pressure rating as discharge flange. Shaft sleeves arc required for pumps having conventional packing except where not economical due to a small shaft size. Shaft sleeves under packing shall extend beyond the outer face of the packing gland. 法蘭連接部分應(yīng)遵守 DIN和 ISO標(biāo)準(zhǔn)與金屬度量標(biāo)準(zhǔn)相一致。（ DIN， ND等）螺紋連接應(yīng)為椎管螺紋，按照 DIN和 ISO標(biāo)準(zhǔn)或等同的國際注冊的。進(jìn)口法蘭應(yīng)有與排出法蘭相同的壓力等級。軸套應(yīng)擴(kuò)張?jiān)谕獠堪b填料表面之外 Wear rings are required for pumps with closed type impellers. Both casing and impeller wear rings are preferred. A casing wear ring is required as a minimum. 泵的耐磨環(huán)要求閉合性葉輪。鑄件和葉輪磨損環(huán)都為首選。一個泵殼耐磨環(huán)要求達(dá)到最小值 Pump Construction for Vertical Pumps 垂直泵的泵 施工 Harmful effects of torsional and/or lateral critical speeds and vibrations of the enure set of equipment shall be avoided. 扭轉(zhuǎn)的不良影響和（或）橫向臨界速度及設(shè)備的振動應(yīng)避免 Vertical motor drives of right angle gear unit shall have thrust bearing capacity adequate for maximum pump thrust both up and down for any operating conditions 直角齒輪垂直驅(qū)動電機(jī)應(yīng)有能勝任任何操作情況下推力軸承上下移動的最大承載量 Contractor shall determine the total dynamic head required of submerged pumps to provide the specified discharge pressure at discharge flange based on minimum liquid level. 承包商應(yīng)決定總的動壓頭要求潛水泵來提供規(guī)定排出法蘭的排氣壓力，以最小流動水平為基礎(chǔ) Contractor shall state the following when applicable:應(yīng)用時承包商應(yīng)陳述以下內(nèi)容： ? NPSH reference point, 汽蝕余量參考 點(diǎn) ? Minimum submergence, 最小浸入 ? Minimum clearance from sump bottom. 水坑底部的最小余隙 Pump column sections 8 cm diameter and larger shall be of flanged construction 泵列區(qū)域 8cm直徑和大點(diǎn)的應(yīng)屬于法蘭結(jié)構(gòu) The pumps shall be free from vibration at all conditions of load, and shall be designed to allow satisfactory and safe operation 泵應(yīng)免于所有負(fù)荷情況下的振動，設(shè)計(jì)應(yīng)允許安全操作和滿意度 Materials shall be specially chosen to resist cavitation, erosion and corrosion or other destructive influences to which they may be subjected in service. If the pump impeller shaft is made of different materials, any portion of the impeller shaft which could e in contact with the water must be encased in a sleeve of the material as specified. 材料應(yīng)為特別選擇為抗氣穴，侵蝕和腐蝕或其他他們在運(yùn)行中可能遭受的破壞性影響 The bedplates of the pumps shall be provided with drip tray facilities, and provisions must be made for drainage. 泵的臺板應(yīng)被提供除霜水盤，規(guī)定必須被排水 Air release valves shall be fitted where necessary at suitable points on the pump casing. In case of pumps designed 電動給水 泵技術(shù)規(guī)范書 土耳其 XXX 燃煤電站工程 24 with horizuntally split casings suitable means shall be provided for withdrawing the removable half casing and impellers without disturbing any of the water pipes or valves. 排氣閥應(yīng)被定位在泵殼適宜的點(diǎn)上。假如泵設(shè)計(jì)了對分外殼，適宜的辦法是拆下可移動的半管和葉輪無須觸及水管閥門 Mechanical Seals 機(jī)械密封 Appropriate mechanical seals shall be designed and selected for zero leakage according to DIN 24960. Each mechanical seal shall be provided with a flush line arranged to flush the seal faces. For vertical pumps a vent valve shall be furnished on the flush line or on the seal chamber. 適當(dāng)?shù)臋C(jī)械封應(yīng) 被按照 DIN 24960設(shè)計(jì)和選擇為零泄漏。每個機(jī)械封應(yīng)被提供一條沖洗線安排為沖洗密封面。應(yīng)在密封腔體或在沖洗線上提供一個垂直泵 Balanced scats shall be provided for seal chamber operating pressures above 5 bar or for liquid specific gravity lower than . 提供給密封腔體的平衡 SCATS 5條以上的操作壓力或液體比重低于 Auxiliary Piping for Cooling Water, Seal Flush, etc. 冷水管的輔助管路，密封沖洗等 Piping systems for cooling water or seal flush shall be plete with all fittings, such as valves, sightflow indicators^ strainers, orifices, etc. 冷水管道系統(tǒng)或密封沖洗應(yīng)具有所有配件，例如閥門，可視流體顯示器，濾水管，孔口等 Provisions for water cooling such as bearing jacket, seal chamber jacket and flush line cooler shall be supplied as required for 冷水規(guī)定例如軸承護(hù)套，密封腔和沖洗線冷卻器應(yīng)按要求供應(yīng) ? Satisfactory operation of the seal or packing, and 密封或包裝操作的滿意度和 ? Maintaining bearing oil temperature beneath the acceptable limits advised by the oil and bearing manufactures, 維護(hù)軸承油溫在油和軸承制造商建議的可接受范圍以下 Cooling water piping shall be manifolded to single inlet and outlet connections. The pump glands shall be arranged in such a way that the removal of the packings can be carried out with the minimum of disturbance. It is preferred that the design of the pump shall be such that no external source of water supply is required for gland seaLing. Precautions shall be taken to prevent gland leakage water entering the bearing housings. 泵密封圈應(yīng)按照撤去包裝的方式安排，可執(zhí)行最低程度的觸及。最好是泵的設(shè)計(jì)應(yīng)為密封圈不要求有水源的外來電源，應(yīng)采取措施防止填料函漏水進(jìn)入軸承箱 All bearings shall have a suitably dimensioned surface area and shall preferably be of the journal type. split for easy maintenance, and shall be arranged to facilitate the removal of or repairs to the pump impellers. Where bearings are of the ball or roller type die inner face shall be fitted directly to the shsf1. and shall be located at a machined shoulder on the shall. All bearings shall be oil tight. 所有軸承應(yīng)有適當(dāng)?shù)囊?guī)格表面區(qū)域且更適宜成為軸頸類型 Couplings 聯(lián)軸器 Connections between horizontal pumping units and power drives shall except in the case of close coupled pumps, be made with suitable flexible type couplings. 臥式泵和動力傳動之間的連接除了在泵強(qiáng)耦合的情況下，都用適宜的彈性聯(lián)軸器制成 Spacer type flexible couplings shall be furnished for all horizontal pumps. The spacer length shall permit the removal of seal, coupling bearings, impellers, as coupling guards shall be supplied and mounted so that they cover rotating parts to within 10 nun of stationary housings. Guards shall be designed to prevent contact with coupling or