Boiler water-feeding pump

A boiler feed water pump and pump base technology, applied in the direction of pumps, pump components, non-variable-capacity pumps, etc., can solve the problems of inconvenient maintenance, high engineering cost, complex system, etc., so as to reduce engineering cost, improve utilization rate, increase economic effect

Inactive Publication Date: 2009-09-30
SHANGHAI AOLI PUMP MFG
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Problems solved by technology

Although this solution solves the technical problem of inconvenient maintenance, it still need

Method used

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  • Boiler water-feeding pump
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Embodiment Construction

[0011] Such as figure 1 As shown, the pump seat component 18 of the present invention is an integral pump seat component with a welded structure. The pump housing component includes a suction pipe 4, a discharge pipe 11 and a cylinder 12, which can carry high-pressure forgings, the main cylinder 12 and the suction pipe 4, and discharge The pump housing part formed by welding the pipe 11 and the auxiliary pipeline 17 are both located on the pump seat part 18. The pump core package components include the first stage middle section 5, inducer 6, first stage impeller 7, several stages of guide vanes 8, pump shaft 1, several stages of impeller 10, several stages of middle section 9, large end cover 13, balance mechanism 19, suction seal Component 3, discharge sealing member 15, suction bearing member 2, and discharge bearing member 16. The first stage middle section 5, several stages of guide vanes 8, several stages of middle section 9, large end cover 13, suction sealing part (stator...

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Abstract

The invention relates to the technical field of boiler water-feeding pump, in particular to a high-pressure boiler water-supplying pump matching with a thermal generator set, which is characterized in that a pump shaft in front of a first-stage impeller of a multi-stage impeller is provided with an inducer, and the inducer and the first-stage impeller form an inducer mechanism. The high-pressure boiler water-supplying pump has the following advantages that: the inducer mechanism solves the problem of cavitation, and by combining with dual-shell structure technology, the designed novel high-speed large-flow high-pressure boiler water-supplying pump is not provided with a fore pump and is not convenient to overhaul. Because the boiler water-feeding pump is not provided with the fore pump, the occupied space of a pump set is reduced, a system is simplified, the reliability and the safety of the system are improved, and the construction cost is reduced; and by using the dual-shell structure, water inlet and outlet pipelines, and a pump base and pump shell components are not necessary to be disconnected during overhaul so that the mounting, the debugging, the maintenance and the overhaul are convenient and quick, the overhauling time is reduced, the utilization rate of a boiler is improved, and the economic benefit of an electric power plant is increased.

Description

[Technical Field] [0001] The invention relates to the technical field of boiler feedwater pumps, in particular to a high-pressure boiler feedwater pump matched with a thermal power generating set. [Background technique] [0002] At present, my country's electric power industry is developing rapidly. 135MW, 200MW, and 300MW thermal power generating units have become mainstream units, and supporting boiler feed pumps have also become mainstream pumps. Solving their technical problems can bring huge social and economic benefits. [0003] Existing technologies in this technical field: CHTA type produced by KSB, FK type produced by WEIR, HPT type produced by SULZER and other double-shell high-speed boiler feedwater pumps. In order to prevent cavitation, low-speed front pumps are equipped (the speed is usually 1490rpm), which increases the complexity of the system, reduces the reliability, and increases the engineering cost. The DG270-140C and TDG680-180 models produced by Zhengzhou Po...

Claims

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Application Information

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IPC IPC(8): F04D1/06F04D29/24
Inventor 胡涛李胜勇
Owner SHANGHAI AOLI PUMP MFG
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