【文章內(nèi)容簡(jiǎn)介】 d of installation. The stretching distance of the expansion joint should be remain in two sides and allocate properly. 7. 根據(jù)液控蝶閥密封結(jié)構(gòu)圖，在進(jìn)水蝶閥進(jìn)水側(cè)分別安裝上游進(jìn)水短管、緊固連接螺栓及導(dǎo)向桿等,具體安裝步驟如下：As per VNSB4B114008 Working Seal and maintenance Seal Assembly Drawing. Install inlet pipe(up stream)、connecting bolts and guide rods at the inlet side of MIV, The specific installation steps are as follows:（1) 在確定閥體不再移動(dòng)的情況下,拆除支撐環(huán)上2根運(yùn)輸固定螺桿；Under the condition of making sure that the valve body can’t be moved, remove the two bolts which is used in fixing the support ring for transporting （2）將上游短管吊裝就位；安裝上游短管時(shí)，上游短管與支撐法蘭騎縫銷應(yīng)該對(duì)準(zhǔn)。Hoist the inlet pipe ( up stream ) to the appropriate location 。 Istallation upstream penstock, the upstream penstock and support flange pipe should be aligned.（3）安裝上游側(cè)法蘭連接螺栓但是不緊固；Install the connecting bolts but not fasten them.（4）將上游短管上的密封壓蓋連接螺栓擰松；Loosen the connecting bolts between gland cover and the inlet pipe (up stream) .（5）將導(dǎo)向桿兩端裝上墊圈、螺母、擋塊位于兩墊圈、螺母之間，插入上游湊合節(jié)，將導(dǎo)向桿擰入移動(dòng)密封圈螺孔并擰緊密封壓蓋連接螺栓；Install gaskets and nuts at the both sides of guide rod. The fixing pedestal is between the two nuts. Insert it into flange of inlet pipe(up stream), let all the guide rods screw into the moveable sealing seat, then fasten the bolts of gland cover。（6）逐個(gè)將導(dǎo)向桿兩端螺母擰緊于擋塊上，采用手動(dòng)擰固定座兩側(cè)螺母的方式將移動(dòng)密封環(huán)移動(dòng)至最外側(cè)(即:使檢修密封處于完全解除狀態(tài)),然后將固定座兩側(cè)螺母鎖緊在固定座上.Fasten all the nuts of guide rod to the fixing pedestal one by one, Screw the nut at both sides of the fixing pedestal to make the maintenance sealing seat extract at the ultimate left position (which means the maintenance seal released pletely), then fasten all the nuts of guide rod to the fixing pedestal.（7）將上游側(cè)法蘭連接螺栓緊固一半.Connect the upstream side of the flange bolts in half.8. 將上、下游短管與對(duì)接的管道焊牢，焊縫要求表面無裂紋、夾渣和氣孔等缺陷，且保證焊縫處無外泄漏，并按要求對(duì)焊縫做無損檢測(cè).Weld the inlet pipe(up stream)and the outlet pipe(down stream). To assure that there is no crack、no slag and no air hole in the surface of weld joint and zero leakage in the weld joint，required to make NDT testing of the weld.9. 把管道法蘭螺栓全部擰松，消除安裝內(nèi)應(yīng)力.All the pipe flange bolts to loosen and eliminate installation of internal stress.10. 重新擰緊整圈螺栓，必須全部擰緊，保證密封。(采用對(duì)稱緊固方式緊固法蘭螺栓)Retighten the bolts full circle, must all be tightened to ensure sealing.( Fasten all the flange bolts with Symmetrical fastening sequence.11. 對(duì)基礎(chǔ)螺栓進(jìn)行二次灌漿。緊固所有基礎(chǔ)螺栓且確保進(jìn)水閥能在基礎(chǔ)上移動(dòng)。Pour the second concrete for the foundation all the foundation bolts and confirm that the MIV can slide on the foundation surface.12. 根據(jù)液控蝶閥安裝結(jié)構(gòu)圖和旁通管路圖，逐步安裝重錘，旁通閥、旁通管、旁通伸縮節(jié)、排污(水)閥、空(排)氣閥、差壓控制器(控制閥前后壓差)等。安裝時(shí)必須保證各部件正確安裝，各連接螺栓必須擰緊，以保證各連接處無外泄漏。安裝時(shí)注意差壓控制器的壓力方向不得接反。According to VNSB4B114001 MIV general layout and VNSB4B114007 Bypass pipe drawings and part list, Install hammer 、 the bypass valve、bypass pipe、bypass expansion joint、drain valve、intake valve、pressurebalance switch(to control the pressurebalance between the pipe of before or after valve) step by step. You should make sure that each ponent have been installed correctly、all of the connecting bolts have been tightened and there is not leakage of each joint. When install the pressurebalance switch, you must make sure it is not reverse. 蝶閥全關(guān)位置校準(zhǔn)　Adjust the full close position of butterfly valve1. 將拐臂安裝好，將蝶閥關(guān)閉，直到全關(guān)。全關(guān)定位方法如下：Install the arm. The butterfly valve closed, until close., Full Close the butterfly valve as the follow state:先將閥門關(guān)到全關(guān)位置，然后將手動(dòng)銷插入閥體銷孔，直至手輪不能旋轉(zhuǎn)操作；Close the valve near to the station of full close, , then the manual pin shall be inserting into the pin hole of body, Until the handwheel can39。t rotate。2. 將接力器安裝好，接力器全關(guān)定位如下：The servomotor is installed, locate the following servomotor fully closed:（1）根據(jù)液控蝶閥基礎(chǔ)載荷圖，安放閥門及接力器地腳螺栓、基礎(chǔ)墊板及其支撐螺栓，并初步調(diào)平；According to VNSB4B114003 Foundation Drawings amp。 Embedded Parts，Install the valve and servomotor anchor bolts, base plate and its support bolts, and preliminary leveling；（2）調(diào)整閥門站腳基礎(chǔ)墊板處的調(diào)整螺栓，保證以下4點(diǎn)：Adjust valve station at the foot base plate adjustment bolts, to ensure the following four points:a、使閥體中心線與管道中心線重合；Ensure that the body centerline coincides with the centerline of a pipeline。b、閥體法蘭面與管道中心線垂直；Body flange surface and the vertical centerline of a pipeline。c、兩閥軸中心線水平；Two horizontal centerline of the valve shaft。d、閥門站腳基礎(chǔ)墊板處地腳螺栓處于螺栓孔的中心位置；Valve station at the foot base plate bolt in the center of the bolt hole。（3）調(diào)整接力器支座基礎(chǔ)墊板處的調(diào)整螺栓，使接力器豎直，使活塞桿完全縮回到缸筒內(nèi)（即油缸全關(guān)到位），直至調(diào)整螺栓無法調(diào)整，并校核接力器安裝尺寸，并且讓接力器基礎(chǔ)墊板處地腳螺栓處于螺栓孔的中心位置。Adjust servomotor seat adjustment bolts at the base plate, the servomotor vertically, so that the piston rod is fully retracted into the cylinder barrel (cylinder fully closed position) until the adjusting bolt at B can not be adjusted, and check servomotor installation size, and let the servomotor base plate at the bolt in the center of the bolt hole. 液壓系統(tǒng)安裝　Hydraulic System Installation1. 液壓系統(tǒng)采用二次安裝方式，即：預(yù)安裝酸洗 正式安裝。Hydraulic system using secondary installation, Namely: PreInstallation Pickling Formal Installation2. 預(yù)安裝時(shí)，先將液壓系統(tǒng)，液壓缸及中間過渡塊固在規(guī)定的基礎(chǔ)上，然后根據(jù)圖紙要求把液壓系統(tǒng)的出油口用高壓膠管連接。Preinstallation, the hydraulic system, hydraulic cylinders and intermediate solid block on the basis of the specified, According to VNSB4B114018 With a high pressure hose to the hydraulic system oil outlet connected.3. 管道的焊接采用對(duì)接焊。焊接前，焊接處應(yīng)倒角，去毛刺，焊接時(shí)采用氬弧焊打底，電弧焊蓋面。Butt welding pipe welding. Before welding, welding should chamfering, deburring, welding using welding backing, surface covered arc.4. 管道的酸洗工藝，建議采用循環(huán)沖洗形式對(duì)管道內(nèi)表面進(jìn)行處理.Pickling process pipeline, the proposed form of a rinse cycle pipe surface treatment.5. 安裝前，要將各接口處擦洗干凈。Before