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Boiler water circulating pump shell

A furnace water circulation pump and shell technology, applied in the field of boiler water circulation pump shells, can solve the problems of reduced shell life, reduced boiler water circulation pump work efficiency, and easy corrosion of the inner wall of the pump shell, achieving good corrosion resistance, The effect of high pressure

Inactive Publication Date: 2020-08-21
HEFEI WANHUA ELECTRIC PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Among them, the pump shell is used to circulate the furnace water. Because the furnace water has a high temperature, the shell made of general materials is lacking in pressure resistance. In addition, the furnace water contains many impurities, such as metal particles and active ions. And acid and alkali, so the inner wall of the pump casing is easily corroded, especially in high temperature environment, the corrosion rate is faster, so that the life of the casing is greatly reduced, which also reduces the working efficiency of the boiler water circulating pump

Method used

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Embodiment Construction

[0013] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0014] According to an embodiment of the present invention, a boiler water circulation pump housing is provided, the scheme of which is as follows:

[0015] The shell of the furnace water circulation pump includes two layers, the inner layer and the outer layer are connected together by reinforcing ribs, the inner layer includes a base layer and a corrosion-resistant layer, the base layer is ordinary carbon steel, and the corrosion-resistant layer consists of the following The elements are made according to ...

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PUM

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Abstract

The invention discloses a boiler water circulating pump shell. The boiler water circulating pump shell comprises an inner layer and an outer layer, the inner layer and the outer layer are connected together by reinforcing ribs, the inner layer comprises a base layer and a corrosion-resistant layer, and the outer layer comprises a connecting layer and a supporting layer. The corrosion-resistant layer of the inner layer of the boiler water circulating pump shell has good corrosion resistance, and is not only resistant to high-temperature corrosion, but also able to resist corrosion of various elements and acid and alkali, and the supporting layer of the outer layer has high specific strength and high specific stiffness, and can provide high-strength and high-stiffness supporting for the inner layer.

Description

technical field [0001] The invention relates to the technical field of circulating pumps, in particular to a shell of a boiler water circulating pump. Background technique [0002] Boiler water circulation pump is a kind of large flow, low head single-stage centrifugal pump which is installed in the boiler evaporation system to withstand high temperature and high pressure to force the working medium to flow. Its structure includes three parts: pump casing, pump blade, bearing and heat insulator . Boiler water circulation pumps are generally used in the start-up systems of forced circulation drum boilers and once-through boilers. Pump housing and impeller. The pump casing has a hemispherical structure, which is characterized by small wall thickness and relatively small thermal stress. The pump blade is a centrifugal type with a high specific speed, which is close to a mixed-flow single-stage centrifugal pump. There are pump blades at the outlet of the pump blades. Convert ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/42F04D29/02
CPCF04D29/026F04D29/426F04D29/4286
Inventor 徐成姚荣祥周巧霞陈林
Owner HEFEI WANHUA ELECTRIC PUMP