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Novel BB2 high-temperature-resistant high-pressure wear-resisting centrifugal pump structure

A high-pressure wear-resistant, BB2 technology, applied in the field of centrifugal pumps, to achieve the effect of prolonging service life and preventing erosion

Pending Publication Date: 2018-02-23
江苏永安泵业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, the flow rate of the new high-temperature-resistant and high-pressure BB2 pump can be made larger Qmax=1200m3 / h, which cannot be realized by conventional OH2 cantilever pumps

Method used

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  • Novel BB2 high-temperature-resistant high-pressure wear-resisting centrifugal pump structure
  • Novel BB2 high-temperature-resistant high-pressure wear-resisting centrifugal pump structure
  • Novel BB2 high-temperature-resistant high-pressure wear-resisting centrifugal pump structure

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Embodiment Construction

[0017] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0018] Such as figure 1 The structure of a new type BB2 high temperature and high pressure wear-resistant centrifugal pump shown includes a pump body 1, a left pump cover 2, a right pump cover 3, a central rotating shaft 4 and an impeller 5. The pump body 1 is provided with an axial through hole and is connected with the pump body. The upper through hole connected by the axial through hole, the upper through hole and the axial through hole form a T-shaped cavity, the left pump cover 2 and the right pump cover 3 are respectively covered on the left port and the right port of the pump body 1 by bolts, Both the left pump cover 2 and the right pump cover 3 are pr...

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Abstract

The invention relates to a new type BB2 high temperature and high pressure wear-resistant centrifugal pump structure. Left and right wear-resistant liners are respectively arranged on the inner side of the left pump cover and the right pump cover. The curved volute is connected with an arc-shaped inlet protective sleeve, and the materials of the arc-shaped inlet protective sleeve, the left wear-resistant liner and the right wear-resistant liner are all wear-resistant alloys, and the main components of the wear-resistant alloy are C, Mn, Si, Ni, Cr, Mo, Ti, RE and balance Fe. A new BB2 high temperature and high pressure wear-resistant centrifugal pump structure of the present invention has replaceable wear-resistant lining plates on both sides of the impeller, which can effectively protect the pump volute from being washed; The advanced hard alloy arc-shaped inlet protection sleeve can effectively prevent the inlet granular medium from scouring the outer flow channel of the volute, and the service life of the pump volute will be extended by about one time.

Description

technical field [0001] The invention relates to the field of centrifugal pumps, in particular to a novel BB2 high temperature and high pressure wear-resistant centrifugal pump structure. Background technique [0002] At present, the domestic BB2 pump structure used in chemical equipment has the following characteristics: (1) low cavitation allowance (2) double bearings are used at both ends of the shaft, and the operation is stable. These pumps are used extensively for conveying clean media. At present, the chilled water pump used in the Texaco coal gasification section, under the working conditions of inlet pressure ≥ 8.45MPa, temperature > 250 ℃, flow rate Q ≤ 500m3 / h, all domestic manufacturers use OH2 pumps, and the service life of the mechanical seal less than two months. Generally, the refractory bricks are replaced every 60 days in the gasification furnace. The pump seal must be replaced when the furnace is shut down to replace the refractory bricks. During the p...

Claims

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Application Information

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IPC IPC(8): F04D7/02F04D29/42F04D29/04F04D29/02
CPCF04D7/02F04D29/026F04D29/04F04D29/426
Inventor 石安君张丽石安山
Owner 江苏永安泵业有限公司
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