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- 安國市南陽工業區
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- 415130881@qq.com
- 電話：
- 18631165157
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- 0312-3427286
- 手機：
- 18631165157
單殼渣漿泵與雙殼渣漿泵的優缺點：
1)泵無軸封，故可用于要求介質絕對不外漏的場合，如核電方面也特別適用。
2)泵適用溫度達375°C，適用壓力達22MPa,使用該種系，不僅可以提高機組熱效率，還可以縮短起動時間。
3) 在火力發電機組中，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，且垂直焊在循環管路上，不設任何支架，泵結構簡單，安裝方便。
4) 電動機定子和轉子間無屏蔽套，加之泵無泄漏，所以泵效率高，檢修方便。由于導葉存在，該泵無徑向力，加之結構簡單，葉輪通過熱屏和中間板安裝在電動機軸伸出端，又具有最小的懸臂，故運行平穩可靠。
鍋爐強制循環泵的結構特點有:
1)泵與電動機是直聯式， 無軸封，兩者形成一個安全獨立的封閉單元。
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機傳遞熱量。
4) 推力盤可承受兩個方面的軸向力和轉子部件質量。
5)導軸承以水潤滑，新研制的特殊材料襯里壽命長，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.
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