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Balancing device for multi-stage pump and surface additive manufacturing method

A balancing device and multi-stage pump technology, which is applied to the parts of the pumping device for elastic fluid, additive processing, pumps, etc., can solve the problems of shortened service life and large wear, and achieve improved wear resistance and uniform hardness , The method is simple and reasonable

Pending Publication Date: 2020-01-24
江苏特维克科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above technical problems, the present invention provides a balancing device for multi-stage pumps and a surface additive manufacturing method. By setting a laser cladding layer on the surface of the mating surface, the surface quality is improved, and the surface performance requirements and balance of the stainless steel base material are solved. The device wears a lot during use, which leads to the problem that the service life is greatly shortened

Method used

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  • Balancing device for multi-stage pump and surface additive manufacturing method
  • Balancing device for multi-stage pump and surface additive manufacturing method
  • Balancing device for multi-stage pump and surface additive manufacturing method

Examples

Experimental program
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Effect test

Embodiment 1

[0045] A surface additive manufacturing method of a balance device for a multi-stage pump. The laser additive cladding method is used to manufacture the first laser cladding layer, the second laser cladding layer, the third laser cladding layer and the fourth laser cladding layer. The cladding adopts the balance sleeve 5, the balance plate and the balance plate 9 as specific components, including the following steps:

[0046] Step 1. Laser cladding the first laser cladding layer on the matching A side 3 of the balance device. The laser cladding power is 2800W. During the laser cladding process, the circumferential rotation speed is 4.5rmp / min, and the cladding material is Ni40 cladding Material, the thickness of the first laser cladding layer is (1.6±0.1) mm.

[0047] Step 2. Laser cladding the second laser cladding layer on the matching B side 6 of the balance device. The laser cladding power is 2500W. During the laser cladding process, the circumferential rotation speed is 5rmp / m...

Embodiment 2

[0052] A method for surface additive manufacturing of a balance device for a multi-stage pump. The laser additive cladding method is used to manufacture the first laser cladding layer, the second laser cladding layer, the third laser cladding layer and the fourth laser cladding layer. The cladding adopts the balance sleeve 5, the balance plate and the balance ring 7 as specific components, including the following steps:

[0053] Step 1. Laser cladding the first laser cladding layer on the matching A side 3 of the balance device. The laser cladding power is 2800W. During the laser cladding process, the circumferential rotation speed is 4.5rmp / min, and the cladding material is Ni40 cladding Material, the thickness of the first laser cladding layer is (2.4±0.1) mm.

[0054] Step 2. Laser cladding the second laser cladding layer on the matching B side 6 of the balance device. The laser cladding power is 2500W. During the laser cladding process, the circumferential rotation speed is 5rm...

Embodiment 3

[0059] A method for surface additive manufacturing of a balance device for a multi-stage pump. The laser additive cladding method is used to manufacture the first laser cladding layer, the second laser cladding layer, the third laser cladding layer and the fourth laser cladding layer. The cladding adopts the balance drum, balance plate and balance plate 9 as specific components, including the following steps:

[0060] Step 1. Laser cladding the first laser cladding layer on the matching A side 3 of the balance device. The laser cladding power is 2800W. During the laser cladding process, the circumferential rotation speed is 4.5rmp / min, and the cladding material is Ni40 cladding Material, the thickness of the first laser cladding layer is (1.8±0.1) mm.

[0061] Step 2. Laser cladding the second laser cladding layer on the matching B side 6 of the balance device. The laser cladding power is 2500W. During the laser cladding process, the circumferential rotation speed is 5rmp / min, and ...

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Abstract

The invention discloses a balancing device for a multi-stage pump and a surface additive manufacturing method. The balancing device comprises a balancing disc, the balancing disc comprises a cylindrical shaft barrel portion and a disc portion axially perpendicular to the shaft barrel portion, the shaft barrel portion is axially connected with the disc portion, the outer peripheral surface of the shaft barrel portion is a matching surface A, the outer gap of the matching surface A is provided with a matching surface B surrounding the matching surface A in a relative mode, a circular ring-shapedmatching surface C is arranged on the disc surface of the disc portion, a matching surface D which is parallel and relative to the matching surface C is arranged on the balancing device, and laser cladding layers are cladded on the matching surface A, the matching surface B, the matching surface C and the matching surface D correspondingly through laser. According to the balancing device for themulti-stage pump and the surface additive manufacturing method, by means of material changes and process changes, the working condition requirements of the surfaces of parts of the balancing device are met, various hardening, corrosion-resistant and wear-resistant requirements of the surface of a stainless steel base material are met, and manufacturing of a low-cost and high-tech product is realized.

Description

Technical field [0001] The invention relates to the field of pumps, in particular to a balancing device for a multi-stage pump and a surface additive manufacturing method. Background technique [0002] Multi-stage pumps are widely used. When the multi-stage centrifugal water pump is started, the pressure difference between the high water pressure at the water outlet and the low water pressure at the water inlet causes the water pump rotor to generate an axial force toward the water inlet. In order to balance this axial force, To ensure the normal start of the water pump, the multi-stage centrifugal pump is equipped with a set of balance devices at the water outlet. Take the balance device composed of the balance plate and the balance plate as an example. The balance principle is to decompress a part of the high-pressure water to the balance chamber through the damper at the high-pressure water outlet, and then flow out through the gap between the balance plate and the balance pla...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04D29/66C23C24/10B33Y10/00B33Y70/00
CPCB33Y10/00B33Y70/00C23C24/106F04D29/669
Inventor 陈俊琪
Owner 江苏特维克科技有限公司
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