卧式水轮发电机组安装工艺

卧式水轮发电机组安装工艺

Horizontal hydro-generating unit installation process

卧式水轮发电机组的安装分为预埋部份（管路）、导水机构（主机）、轴承部份、基础部份、发电机部份、辅助设备。

The installation of the horizontal hydro-generating unit is divided into embedded part(piping), distributor ( main unit), bearing part, foundation part, generator part, auxiliary part.

一、水轮发电机组埋件预埋

Hydro-generating unit embedded part

根据工程进度的要求与土建配合对所需的油、气、水管路进行预埋，对所有埋设的管路的管口进行封堵，防止异物进入。

Embed the needed oil, gas, water piping according to the project process and civil engineering. Plug all the pipe orifices of the piping embedded to keep foreign matters from getting into.

二、测点放样

Measuring point layout

根据按甲方提供的高程按设计图纸来确定机组的三维坐标，方法可用水准仪或钢琴线连通器原理来保证机组中心、高程与X、Y坐标。

According to the height provided by owner and the design drawing to determine the unit three-dimension coordinate, and the unit center, height and X、Y coordinate can be guaranteed with balance level or the law of piano line connected vessels.

三、进水部份的安装

The installation of the water inlet part

把阀门、伸缩节和进水弯管依次吊入预留的机坑内，用法兰连接，即阀门与伸缩节连接，伸缩节与进水弯管连接，并校正前后左右位置和安装高程，下部加临时支撑固定，用水准仪

吊线法校正进水弯管法兰面高度和中心线位置，主要是校正进水弯管的水平、垂直度和中心高。

Successively lift valve, expansion joint, water inlet elbow into the reserved pit. Use flange to connect valve and expansion joint, expansion joint and water inlet elbow, then adjust the position and installation height, temporary supports are fixed at the bottom. Balance level plumbing method is adopted to check the water inlet elbow flange surface height and center line position, mainly to check the level, verticality and center height.

蝶阀在没安装凑合节前做好蝶阀静态的全开、全关调整工作，并检查在关闭状态的密封情况，在全开时阀门是否在中间位置，必要时给予适当的调整。

Before butterfly valve installed with the expansion joint, carry out the all open, all closed adjustment work at the static state, check the seal situation at the closed state, check whether valve is in the middle position at the all open state, then adjust if necessary.

四、导水机构的安装（蜗壳）

The installation of distribution(spiral casing)

金属蜗壳的安装是卧轴混流式水轮机安装中的一个重要环节，由于导水机构是整机出厂，所以可以整体同时安装。将蜗壳吊装就位后，蜗壳进水口与进水法兰面对好，加石棉橡胶垫套上螺栓拧紧，并穿上地脚螺栓，加临时支撑，为了保证蜗壳的位置正确必须做到以下三点：（1）蜗壳整体中心高程（2）蜗壳整体水平（3）蜗壳整体X、Y垂直度。

The metallic spiral casing installation is the important part during horizontal Francis turbine installation. Install the distributor integrally, since distributor is out of factory in one piece. When the spiral casing is lifted into position, check spiral casing water inlet and water inlet flange face, pad the asbestos rubber gasket and tighten the bolts, fix with foundational bolt, use temporary support. In order to ensure the accuracy of the spiral casing position, the following three points should be fulfilled: One, the unity center height of the spiral casing. Two: spiral casing unity level.