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- 安國(guó)市南陽(yáng)工業(yè)區(qū)
- 郵箱：
- 415130881@qq.com
- 電話：
- 18631165157
- 傳真：
- 0312-3427286
- 手機(jī)：
- 18631165157
單殼渣漿泵與雙殼渣漿泵的優(yōu)缺點(diǎn)：
1)泵無(wú)軸封，故可用于要求介質(zhì)絕對(duì)不外漏的場(chǎng)合，如核電方面也特別適用。
2)泵適用溫度達(dá)375°C，適用壓力達(dá)22MPa,使用該種系，不僅可以提高機(jī)組熱效率，還可以縮短起動(dòng)時(shí)間。
3) 在火力發(fā)電機(jī)組中，該系安裝在鍋爐鍋筒下集箱與水冷壁下連箱之間的下降管上，且垂直焊在循環(huán)管路上，不設(shè)任何支架，泵結(jié)構(gòu)簡(jiǎn)單，安裝方便。
4) 電動(dòng)機(jī)定子和轉(zhuǎn)子間無(wú)屏蔽套，加之泵無(wú)泄漏，所以泵效率高，檢修方便。由于導(dǎo)葉存在，該泵無(wú)徑向力，加之結(jié)構(gòu)簡(jiǎn)單，葉輪通過(guò)熱屏和中間板安裝在電動(dòng)機(jī)軸伸出端，又具有最小的懸臂，故運(yùn)行平穩(wěn)可靠。
鍋爐強(qiáng)制循環(huán)泵的結(jié)構(gòu)特點(diǎn)有:
1)泵與電動(dòng)機(jī)是直聯(lián)式， 無(wú)軸封，兩者形成一個(gè)安全獨(dú)立的封閉單元。
2)泵體為球形或半球形，鍛或鑄均可， 可承受劇烈的溫度和壓力變化。
3) 熱屏+高壓冷卻水能有效阻止泵向電動(dòng)機(jī)傳遞熱量。
4) 推力盤可承受兩個(gè)方面的軸向力和轉(zhuǎn)子部件質(zhì)量。
5)導(dǎo)軸承以水潤(rùn)滑，新研制的特殊材料襯里壽命長(zhǎng)，工作可靠。
Advantages and disadvantages of single shell slurry pump and double shell slurry pump:
1) The pump has no shaft seal, so it can be used in occasions where no leakage of medium is required, such as nuclear power.
2) The applicable temperature of the pump is 375 ° C and the applicable pressure is 22Mpa. Using this type of pump can not only improve the thermal efficiency of the unit, but also shorten the starting time.
3) In the thermal power generation unit, the pump is installed on the downcomer between the lower header of the boiler drum and the lower connecting box of the water-cooled wall, and is vertically welded on the circulating pipeline without any support. The pump is simple in structure and easy to install.
4) There is no shielding sleeve between the stator and rotor of the motor, and the pump has no leakage, so the pump has high efficiency and convenient maintenance. Due to the existence of guide vanes, the pump has no radial force, and the structure is simple. The impeller is installed at the protruding end of the motor shaft through the heat shield and the intermediate plate, and has the smallest cantilever, so the operation is stable and reliable.
The structural features of the forced circulation pump of the boiler include:
1) The pump and motor are directly connected without shaft seal, and they form a safe and independent closed unit.
2) The pump body is spherical or hemispherical, which can be forged or cast, and can withstand drastic temperature and pressure changes.
3) Heat shield + high-pressure cooling water can effectively prevent the pump from transferring heat to the motor.
4) The thrust disc can withstand two aspects of axial force and rotor component mass.
5) The guide bearing is lubricated by water, and the newly developed special material lining has long service life and reliable operation.
