【文章內(nèi)容簡介】 orward by the demander can be met and can realize reliable, safe and long operation when in the range of working capacity. 賣方保證滿足需方提出的煙氣擋板性能設(shè)計參數(shù)，在工作容量范圍內(nèi)，均能長期安全穩(wěn)定運行。 Flue Gas Damper煙氣擋板 For flue gas damper, louver type, twin blade structure should be adopted. 煙氣擋板應(yīng)采取百葉窗式雙擋板結(jié)構(gòu)型式。 There shall be 100% air tightness under the design pressure and the design temperature. 在設(shè)計壓力和設(shè)計溫度下應(yīng)有 100%氣密性。 The plete set of flue gas damper shall inc lude framework, double layer board, actuator, hand wheel as well as all necessary sealing members and control parts of sealing air system. Additionally, flexible, reliable and convenient operation of all necessary isolation dampers is required. 整套煙氣擋板應(yīng)包括框架、雙層板、執(zhí)行機構(gòu)、手輪及密封空氣系統(tǒng)的所有必需的密封件、控制件等。同時要求全部必需的隔絕擋板的操作應(yīng)是靈活可靠和方便的。 Under the maximum differential pressure, flue gas damper can be operated and closed tightly without curve or lock. When damper is at the full open or full closed location, it can match with the locking system. The design and location of damper shall make the ash deposit or dust deposit on damper piece lessened to least. 煙氣擋板應(yīng)能夠在最大的壓差下操作，關(guān)閉嚴(yán)密，不會有彎曲或卡住，而且擋板在全開和全閉位置與鎖緊裝置 要能匹配，擋板設(shè)計要使擋板片上的積灰或積塵減至最小。 All bearings of the running gears of axis or dampers shall be provided with lubricating oil. The obvious marks identifying the damper39。s location shall be made at the end of axis and interlock limit switch shall be provided. 軸或擋板 工作齒輪的所有軸承應(yīng)注入油潤滑。在軸的末端裝有指示擋板位置的顯眼的標(biāo)志。并配有聯(lián)鎖限位開關(guān)。 The maximum operating force for handwheels shall not exceed 140N. Lifting lug or lifting hole shall be set at the appropriate place outside the framework to facilitate transportation and erection. 手輪操作的最大力不 得超過 140N?？蚣芡獠窟m當(dāng)位置處應(yīng)設(shè)有吊耳或吊孔 , 以方便運輸和安裝。 Each damper part shall be designed to have enough strength to bear all the high temperature drift range of the flue gas without damage, cohere, deformation or leakage. 每個擋板零部件應(yīng)設(shè)計有足夠強度 , 能承受煙氣全部高溫偏移范圍，沒有損傷，粘連，變形或泄漏。 Each damper part shall be designed according to the maximum design positive pressure value and negative pressure value that will possibly happen. 每一擋板部件應(yīng)按可能發(fā)生的最大設(shè)計正壓和負(fù)壓值來設(shè)計。 Each damper and drive device shall be designed to bear corrosion of surrounding medium under all operation conditions. 每一擋板和驅(qū)動裝置應(yīng)設(shè)計成承受所有運行條件下周圍介質(zhì)的腐蝕。 The internal parts (including the damper piece) of the damper can be conveniently and quickly moved or replaced from the damper framework, which is installed on the flue gas duct. The external parts of the damper can be moved or replaced when the damper is in working condition. 擋板內(nèi)部部件 (包括擋板片 ) 都應(yīng)能方便而快速地從安裝在煙道上的擋板框架上拆卸或更換。而其外部部件都應(yīng)能在擋板處于工作狀態(tài)下拆卸或更換。 Bolt and flange connection shall be adopted for framework. The supplier shall provide the flange (including the counter flange of the damper, bolt and nut) mounted on the existing flue gas duct. Special attention should also be given to the welding of stainless steel and mon steel so as to minimize corrosion. 框架應(yīng)是螺栓和法蘭連接。賣方應(yīng)提供現(xiàn)有煙道上的安裝法蘭 (包括擋板門的反法 蘭及螺栓、螺母 )。特別要注意不銹鋼與普通鋼的焊接，以將腐蝕減小至最低限。 The materials of bypass damper vane (clean flue gas side) are the materials whose grade is equivalent to or better material. The materials of sealing strip and bolt are the materials equivalent to or alloy steel C276. The outer surface of the damper shall be made of the materials equivalent to carbon steel Q235 or better materials than that. The lining materials are the materials equivalent to or better materials than that. The selection of the material cannot release the responsibility of the supplier to select right material. 旁路煙道的擋板框架葉片和軸的材料是等級相當(dāng)于 ，擋板密封片和螺栓是相當(dāng)于 （合金鋼 C276）材料。擋板外表面用相當(dāng)于碳鋼 Q235或更好的材料制作，內(nèi)襯的材料等級相當(dāng)于 。這些材料要求并不減輕賣方正確選擇材料的責(zé)任。 The main axis of the damper shall be set as horizontal. Every damper and its drive device shall match well with the onsite platform so as to pletely and safely access all parts via stairs. Drive unit shall move with the damper39。s expansion and shrink. 擋板的主軸應(yīng)布置成水平。每個擋板及其驅(qū)動裝置應(yīng)能與其在現(xiàn)場的平臺配合良好，以便能通過樓梯充分和安全地接近所有部件。驅(qū)動裝置將隨擋板的膨脹和緊縮而移動。 Electric Actuator of the Damper 擋板 電動執(zhí)行機構(gòu) Dampers shall be provided with remote control actuator and local manual operated actuation installed on walkway or floor. Additionally, local installed indicator of damper location shall be provided. 擋板應(yīng)有遠(yuǎn)程控制和安裝在走道或樓面就地人工操作的電動執(zhí)行機構(gòu)，還應(yīng)有就地安裝的擋板位置指示器。 The actuator of the damper shall be provided with location positioning switches of the two ends, rotating switch for two directions, accident hand wheel and mechanical interlock for maintenance use. The opening and closing time of the electric actuator shall meet the operating requirements. The indication of the opening location (opening) of the actuator will be used for the interlock of booster fan and boiler. 擋板執(zhí)行機構(gòu)應(yīng)配備兩端的位置定位開關(guān)、兩個方向的轉(zhuǎn)動開關(guān)、事故手輪和維修用的機械連鎖。電動執(zhí)行機構(gòu)的啟閉時間應(yīng)滿足運行要求。 電動執(zhí)行機構(gòu)打開位置 (開度 )的指示將用于升壓風(fēng)機和鍋爐連鎖上 。 All dampers shall be provided with 3 limit switches indicating full open and 3 limit switches indicating full closed. The switch of drive unit shall not influence these limit switches. Limit switches shall be provided on each end of the range and can directly indicate the location of the damper piece. 擋板應(yīng)配有 3個指示全開或全閉的限制開關(guān)。這些限制開關(guān)將不受配有驅(qū)動裝置的開關(guān)的限制。在行程的每端應(yīng)配有限制開關(guān) ,并且能直接指示板片的位置。 Machineelectricityliquid integrated products shall be adopted for the electric actuator of the damper and three phase working power of 380V AC, 50Hz shall be adopted. 擋板的電動執(zhí)行機構(gòu)應(yīng)采用機械 電氣 流體聯(lián)合產(chǎn)品，電源采用 380伏 50Hz三相交流電。 電動裝置為“智能一體化”產(chǎn)品。 For signal and/or control purpose, range and limit torque switches are used. Each actuator is provided with two location switches and two torque switches for rotating clockwise and anticlockwise. 信號和 /或控制中采用限程限位力矩開關(guān)。每個執(zhí)行機構(gòu)都配置兩個限位開關(guān)和兩個力矩開關(guān)，以可順時針和逆時針旋轉(zhuǎn)。 Sealing Air System of the Flue Gas Damper 煙氣擋板配套的密封空氣系統(tǒng) The Supplier is responsible for the design of the seali