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Upper-mounting-type hydraulic ball valve

A hydraulic and ball valve technology, which is applied in the field of top entry hydraulic ball valves, can solve problems such as thread blockage, difficult ball processing of V-shaped ball valves, and unstable performance, so as to avoid hidden dangers of valve body leakage, realize online maintenance needs, and simplify batch production The effect of production

Inactive Publication Date: 2011-11-16
SHANGHAI LIXIN PETROLEUM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing ordinary casting two-piece and three-piece ball valves are widely used. For example, the compressed seat spring type has a simple structure, but it is basically impossible to disassemble online without special tools; the ball of the V-shaped ball valve is difficult to process, takes a long time to assemble and debug, and has unstable performance; The V-shaped valve stem spring type has a certain pre-tightening effect, the ball is difficult to process, and the performance is still poor; the single-seat threaded ball valve can adjust the pre-tightening force, which is only suitable for small-diameter low-pressure ball valves; the double-seat threaded spring type The thread is easy to be blocked by medium and dirt, and the single-seat thread spring type has a certain saving in materials, but it is only suitable for small and medium-sized valves

Method used

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  • Upper-mounting-type hydraulic ball valve
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Embodiment Construction

[0011] Such as figure 1 As shown, the top-entry hydraulic ball valve described in the embodiment of the present invention includes an upper valve stem 1, a valve cover 2, a valve body 4, a lower valve stem 6, and a valve seat assembly 9. The valve stem 1 and the lower valve stem 6 are located on the lower side of the upper valve stem 1. The valve cover 2 is installed and fixed with the valve body 4 through the screw 3, and the lower valve stem 1 is fixed with the valve body 4 through the screw 7; the lower edge of the valve body 4 A drain plug 8 is provided, a valve seat assembly 9 is installed between the valve body 4 and the central ball valve body 5, and a spring 10 with a spring seat 11 is provided on the outside of the valve seat assembly 9, and the valve seat assembly 9 is connected to the outer valve body 4, a locking screw 15 is installed, and the two sides of the locking screw 15 are respectively provided with a thrust ring 12 and a threaded hole ring 13, and the lowe...

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Abstract

The invention relates to an upper-mounting-type hydraulic ball valve which comprises an upper valve rod, a valve cover, a valve body, a lower valve rod and a valve seat assembly; the valve seat assembly is installed between the valve body and a central ball valve body; two sides of the valve body are respectively provided with the upper valve rod and the lower valve rod; the valve cover is installed at the part of the lower side of the upper valve rod; the clearance parts of the valve seat assembly, and the upper side and the lower side of an outer valve body are respectively provided with a grease injection hole II and a grease injection hole I; and one side of the grease injection hole II is provided with a screw plug hole. The invention has the beneficial effects that a hydraulic piston motion principle is adopted, the ball valve has a stable structure, the hazard of valve body leakage is avoided, the dismounting issue of the upper-mounting-type ball valve can be solved thoroughly with the minimum difficult, and the on-line maintaining requirement is realized; and the simple batch production of valves with large and small calibers and high and low pressure can be realized, the existing similar products can be replaced completely, and the ball valve has wide market potentiality.

Description

technical field [0001] The invention relates to a top loading hydraulic ball valve. Background technique [0002] The existing ordinary casting two-piece and three-piece ball valves are widely used. For example, the compressed seat spring type has a simple structure, but it is basically impossible to disassemble online without special tools; the ball of the V-shaped ball valve is difficult to process, takes a long time to assemble and debug, and has unstable performance; The V-shaped valve stem spring type has a certain pre-tightening effect, the ball is difficult to process, and the performance is still poor; the single-seat threaded ball valve can adjust the pre-tightening force, which is only suitable for small-diameter low-pressure ball valves; the double-seat threaded spring type The thread is easy to be blocked by medium and dirt, and the single seat thread spring type has a certain saving in materials, but it is only suitable for small and medium diameter valves. Co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K5/06F16K5/20F16K27/06
Inventor 蔡毅
Owner SHANGHAI LIXIN PETROLEUM EQUIP CO LTD
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