EH Circulation Pump HQ39.02Z-1 Simhadri power
Date:2025/3/11 8:33:39 Visits: Author:Dongfang YOYIK Engineering Co; Ltd,EH circulation pump HQ39.02Z-1 is a high-performance circulation equipment designed for the EH (electro-hydraulic regulation) oil system of power plants. Its core function is to maintain the stable circulation pressure of fire-resistant oil and ensure the reliable operation of the regulation and safety system of the steam turbine generator set. The pump adopts a volute-type double-suction centrifugal structure and is directly driven by the turbine main shaft. The rated speed is 3000r/min. Under rated working conditions, it can provide an outlet oil pressure of 2.1~2.3MPa, meeting the EH system's multiple needs for lubricating oil, sealing oil backup oil sources, etc.
Advantages and features:
1. High reliability design: Directly connected to the turbine rotor through a rigid coupling, emergency oil supply is achieved by using the rotor inertia to ensure bearing safety under abnormal working conditions such as power failure;
2. Intelligent pressure control: Built-in automatic overload protection function, precise control of flow and pressure, prevent negative pressure suction problems, and a filter is configured at the suction end of the oil pump to ensure oil cleanliness;
3. Compact maintenance advantage: The modular structure is easy to disassemble and repair. The maintenance standards cover 12 core components such as pump housing, end cover, and sealing ring, requiring the elimination of shaft shake deviations above 0.05mm;
4. System compatibility: In addition to the main oil supply, it also integrates the turbine oil system interface to support redundant oil supply for the generator sealing oil system.
Maintenance specification recommendations:
5. Routine inspection: monitor oil quality, filter status and seal integrity every 3-6 months;
6. Overhaul cycle: a comprehensive disassembly inspection is required every 12-24 months, with a focus on replacing wearing parts such as floating bearings and sealing rings, and calibrating the coupling floating amount to within 0.10mm;
7. Fault response: When pressure fluctuations or abnormal noise occur during operation, the impeller cavitation condition and keyway matching accuracy should be checked immediately to ensure that the axial clearance standard of 0.02mm is met.
Yoyik can offer many spare parts for power plants as below:
#DF-EH Circulation Pump HQ39.02Z-1-DF
chemical centrifugal pump DFB100-80-250
Coupling gear sleeve JXQ62.10.05.12G
Proportional directional valve D31FHE02C1NB0044
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EH Circulation Pump HQ39.02Z-1
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wave spring N-1916
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flange coupling ACF090N41RBP
sealing ring HB4-56J8-114
pressure hose SMS-15/20-305mm-C
globe throttle check valve LJC80-2.5P
Globe valve J61Y/DN50/PN4.0
reciprocating pump 125LY-32-B
three screw pump HSNH940-46
Nex nut FA1D56-03-13
mechanical seal rings 125-80-250
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overflow throttle valve DGMFN-3-YB2H
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globe throttle check valve KJC40-2.5P
coupling flexible shaft PVH74QIPRM-IS
electric centrifugal pump head 50-250C
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pump centrifugal YNKN300/200-20Y/J
high pressure centrifugal pump IHF80-50-200
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EH Circulation Pump HQ39.02Z-1
DFYL-2025-3-11-ZYR