背压汽轮机安装英文

安装说明Assembly instruction

1.安装前后座架、前后轴承座、下半汽缸：

Install the front and rear pedestal, front and rear bearing housing, lower casing

(1)按“垫铁布置图”安放垫铁，垫铁表面必须平整干净，受力均匀，热铁调整错开部分不

得超过垫铁有效面积的25%

According to the “ sizing block arrangement” to place the sizing block, the surface must be clean and smooth, to make the sizing blocks bear balanced stress(balance the stress). the staggered part should not be more than 25% of the total surface.

(2)安装前后轴承座、前后座架、下半汽缸，前轴承座与汽缸采用半圆法兰连接的机组，下

半汽缸与前轴承座、前座架一起吊放在垫铁上，调整好后穿上地脚螺栓。

Install the front and rear pedestal, front and rear bearing housing, lower casing, for the unit which front bearing housing is connected to the casing by semi-circle flange, the lower casing and front bearing housing and front pedestal should be placed on the sizing blocks together, cut in the foundation bolt ( foot bolt, ground bolt) after adjustment.

(3)校正机组标高、水平及纵横向中心线。检查滑销系统，间隙值应符合规定。

Adjust the level( elevation), horizontal and vertical centerline, check the sliding system. the sliders space should correspond with stipulation.

(4)装好各轴承上的铜热电阻，推力瓦块上热电阻引线应不防碍瓦块的摆动。安装轴承下半，

检查与轴承座的接触情况。

Install the copper resistance thermometers on the bearing, the lead wire of the thermometer on the thrust-journal pad should not baffle(hinder) the vibration of the pad, install the lower part of the bearing, check the connection with the bearing housing.

2.试装转子

Trial assembly of the rotor.

(1)测量转子各级叶轮、汽封圈、紧圈处的间隙，与出厂记录比较。

Measure the wheel space, gland ring space, clamp ring space. Compare them with the factory report( record).

(2)平稳地吊起转子，校正水平，慢慢放入汽缸中，严防转子摆动碰撞，物别注意不要擦伤

轴承瓦块表面。轴瓦上加油润滑，缓慢盘动转子检查。

Hang up the rotor steadily, adjust to make it to be horizontal, place it in the casing slowly, to keep the rotor away from vibration and scratch, smear the lubrication on the bearing, turn the rotor slowly to check it carefully.

(3)调整前轴承座标高，使转子后轴颈扬度为零。

Adjust the elevation of the front bearing housing, to ensure the axle neck up-rising to be zero.

(4)检查汽封洼窝中心。

Check the gland seal cavity.

(5)用联轴器找中心工具校准汽轮机与发电机转子中心，允许上开口<0.02mm.

Adjust the center line of the turbine and generator with the coupling center locating tool.

Permitted open<0.02mm.

(6)将斜垫铁点焊牢，初紧地脚螺栓。

Weld the diagonal points on the sizing blocks, tight the foundation bolts.

(7)吊出转子，清理

Hang the rotor out, clean it.

3.安装转向导叶环、隔板。

(1)将清理好的转向导叶环及隔板分别装入上下半汽缸内，在与汽缸配合的面上涂上黑铅

粉。

Install the clean guide blade ring and diaphragm in the upper and lower casing, the contact surface should be smeared by black lead powder.

(2)测量与汽缸的轴向和径向间隙。

Measure the longitudinal and radial(transverse) space between the diaphragm and the casing.

(3)复校各级洼窝中心。

Adjust the cavity again.

4.安装转子

(1)起吊转子，校正水平，吊入汽缸内，轴颈及轴承应光洁并浇上润滑油。

Hang up the rotor, adjust the horizontal. Place into the casing, pour lubrication on the shaft and the bearing.

(2)测量下列间隙

主副推力瓦与推力盘的总间隙

The space between the main thrust pad, auxiliary thrust pad and thrust plate.

前后汽封齿尖径向及轴向间隙

The longitudinal and radial space of the front and rear gland seal gear tip.

隔板汽封齿尖径向及轴向间隙

各轴承挡油板及轴承座挡油环间隙

动静叶的轴向及径向间隙（主推力瓦与推力盘间隙为零时）

用桥形规测量与轴颈顶部间隙

装上上半轴瓦及轴承压盖，测量轴承顶隙和侧隙。

5安装调节气阀

Install the steam governing valves.

(1)按图检查阀序及升程（各阀升程出厂时已经调整好）。

Check the sequence and lift of the valves.

(2)将调节汽阀与蒸汽室盖一起装于汽缸蒸汽室上，中分面上涂密封胶。

Install the steam governing valves and the steam chamber cover on the casing, seal gum should be smeared on the contact surface.

6汽轮机扣大盖

Upper casing installation

(1)装上4根导柱（注意导柱孔位置），导柱上涂润滑油。。

Put in the four guide poles, lubrication should be smeared on the poles.

(2)试扣大盖，检查各级隔板上下半的相对位置，检查汽缸中分面的间隙。

Trial assemble the upper casing, check the relative position of each stage diaphragm,

(3)吊起上半汽缸，清理内部，在下半气缸中分面上涂密封胶，复装上半汽缸。当上半汽缸

下落到1~2MM时，打入定位销，然后完全落下上半汽缸，上紧中分面螺栓。

Hang up the upper casing, clean up the internals, smear seal gum on the contact surface of the

lower casing, install the upper casing again, when the interval is 1~2MM, drive in the locating pins, then release the upper casing down, tight the bolts.

(4)盘动转子检查

Check the rotor

(5)拆下导柱，补上螺栓

Remove the guide poles, replace by bolts,

(6)复校转子对中情况，最后固定发电机位置，联接联轴器(注意联轴器螺栓对号入座)

Adjust the center locating again, fix the generator, fix the coupling.

7基础二次灌浆

(1)基础二次灌浆应一次完成

Base second cement pour should be finished in one time.

(2)二次灌浆的混凝土强度未达到设计强度的50%以前，不允许在机组上拆装重件和进行

撞击性工作；未达到设计强度80%之前，不允许复紧地脚螺栓。

Before the concrete hardness reaches 50% of the designed hardness, any parts remove or fix are not allowed, before 80% of the designed hardness, forbidden to tight the foundation bolts again.

8安装轴承箱盖、调节保安部套，

Install the bearing box cover, adjust the safe system.

(1)各轴承铜热电阻引线应与插头座焊牢，并用压板固定，编号记录。

Each copper resistance thermometer lead wire should be weld on the plug, and fixed by the press board, write down the number.

(2)装轴向位移遮断器时，调整喷嘴下的垫片，使油嘴与挡油盘的间隙符合规定值（此时推

力盘与主推力瓦间隙为零）。

Before install the axial position breaker, adjust the gasket under the nozzle, the space between the oil nozzle and oil plate should be comply with the requirements,

(3)装各传感器，调准间隙。

Install the transducers, adjust the spaces.

(4)检查轴承紧力

Check the bearing tight force.

(5)装轴承箱盖时，在中分面上涂密封胶。

Before installing the bearing box cover, smear seal gum on the contact surface.

(6)从观察窗口用塞尺校准危急遮断油门拉钩间隙。

Adjust the emergency pilot valve space by plug ruler at the observe window.

(7)装调节器时，在装配面上涂密封胶。

Smear seal gum on the surface when installing the adjustment.

(8)调整调节汽阀拉杆，校准调节汽阀横梁的预拉值。

Adjust the rod of governing valve, adjust the rod on primary position.

(9)检查盘车装置离合情况，

Check the on-off of the turn gear.

9油系统及辅助设备安装按照

10管道安装

11油循环：

(1)在各轴承入口油管加装临时滤网，滤网规格不低于100目。将油箱灌满新油，轮流起动

各油泵，两台冷油器交替投入清洗，进入油箱及油系统的循环油应始终用滤油机过滤。

Add strainer at the oil inlet of each bearing, the strainer should not lower than 100 mesh count, full fill the oil box, start up the oil pump in turn, wash the two set of oil cooler by turns, the oil in the box and oil system should be strained by oil-filter.

(2)油循环达到下列要求时主为合格：

The oil is eligible when it comply with the following:

从油箱和冷油器放油点取油样化验，油质透明，含水份合格。

Take sample from the oil box and oil cooler for test, the oil should be transparent, the water content should meet the requirement.

各临时滤网，在通油4小时后无金属颗粒，锈皮及砂粒等杂质，纤维体仅有微量。

After oil cycling for 4 hours, there should be no metal particles, scale and sand particles and other foreign bodies, a spot of fibre is permitted.

(3)油循环完毕，拆除各临时滤网，即可准备汽轮发电机组的运行。

After the oil cycling, remove all the temporary filter, the turbo-generator is ready for trial commission.