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Wear-resistant ball and processing technology

A sphere and spherical technology, applied in the field of wear-resistant sphere and its processing technology, can solve problems such as the inability to meet the arc transition effect, and achieve the effects of avoiding coating cracking, reducing flow rate and increasing service life

Active Publication Date: 2019-09-24
ZHEJIANG PETROCHEMICAL VALVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of W-shaped notch is only a single curved surface, and there is an inflection point at the intersection of the notch and the inner hole of the sphere and the outer circle of the sphere, and a small R arc connection is mechanically polished, which still cannot satisfy the arc transition effect of the busbar tangency

Method used

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  • Wear-resistant ball and processing technology
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  • Wear-resistant ball and processing technology

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Embodiment Construction

[0030] Embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0031] As shown in the figure, a wear-resistant sphere includes a spherical body with an inner hole 4, a notch 1 is provided at both ends of the inner hole 4, and the spherical body is provided with a surface curve 2 that matches the contour line of the notch 1 and Inner hole curve 3, the outline of the notch 1 is zigzagging in a "W" shape, and the notch 1 adopts a curved surface structure with a smooth transition. In this technical solution, a W-shaped notch is used to increase the speed when the valve is opened or closed instantly. Large flow area reduces the flow velocity of the medium and reduces the erosion of the valve seat due to the high-speed flow of the medium;

[0032] In addition, the W-shaped notch adopts a smooth transition surface structure, which avoids the connection inflection point where the busbars intersect, effectively reduces the stress ...

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Abstract

The invention discloses a wear-resistant ball and relates to the field of valves. The wear-resistant ball comprises a spherical body provided with an inner hole, wherein notches are formed in the two ends of the inner hole, the contour lines of the notches are W-shaped, and the notches adopt smooth transition double curved surface structures. The wear-resistant ball provided by the invention has the advantages of long service life and abrasion resistance.

Description

technical field [0001] The invention relates to the field of valves, in particular to a wear-resistant ball and its processing technology. Background technique [0002] For high-temperature (>500°C) high-pressure (>Class 900) hard-sealed ball valves, when the valve is opened, a small slit opens at the outlet of the ball, and the flow rate of the fluid is particularly high, which has a very strong impact on the valve seat, especially in the fluid medium. Contains tiny solid particles, which can easily damage the sealing surface of the valve seat. Valve experts at home and abroad have designed a W-shaped notch at the outlet of the ball, which increases the flow area instantly when the valve is opened, reduces the flow rate, reduces the erosion of the valve seat, and improves the service life of the valve. This W-shaped notch is only a single curved surface, and an inflection point appears at the intersection of the notch and the inner hole of the sphere and the outer ci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/08B23P15/00
CPCB23P15/00F16K5/061F16K5/08
Inventor 吴怀敏杨隆杰王忠渊项光洪项良海刘贤德南飞王忠淼胡唐委
Owner ZHEJIANG PETROCHEMICAL VALVE CO LTD
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