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A kind of shut-off valve for pipeline

A shut-off valve and pipeline technology, which is applied in the field of improved invention of the shut-off valve for pipelines, can solve problems such as difficulty in opening or closing, large pressure difference, and large torque, and achieve the effects of small torque, small pressure difference, and convenient operation

Active Publication Date: 2021-07-13
希佛隆阀门集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Globe valve is a valve widely used in oil pipelines, natural gas pipelines, fire protection systems, chemical systems and related industrial systems. During the use of traditional globe valves, the fluid has a large pressure difference between the front and back of the disc. During the process, the pressure difference is large, and when the valve is opened or closed, the torque is large, and it is difficult to open or close

Method used

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  • A kind of shut-off valve for pipeline
  • A kind of shut-off valve for pipeline
  • A kind of shut-off valve for pipeline

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Embodiment Construction

[0013] Accompanying drawing has shown structure of the present invention, further illustrates its relevant details below again in conjunction with accompanying drawing. See attached figure 1 And attached figure 2 , in this embodiment, the shut-off valve for the pipeline includes a valve body 1, a valve stem 8, a valve cover 14 and a hand wheel 18. The valve body 1 is provided with an inlet passage 2 and an outlet passage 25 distributed left and right, and the inlet The channel 2 is connected with the outlet channel 25 through the central through hole 15, and the central through hole 15 is provided with a valve seat 5, and a valve disc 3 with sealing fit is provided under the valve seat 5, and the valve disc 3 is connected with the valve stem 8 by transmission, and the valve stem 8 Driven by the hand wheel 18, it can be lifted and installed on the valve cover 14. The upper part of the valve chamber of the valve body 1 is provided with an upper positioning block 13 and a lower...

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Abstract

The invention discloses a cut-off valve for pipelines, which is characterized in that: upper and lower positioning blocks distributed up and down are arranged on the upper part of the valve cavity of the valve body, a cylinder sleeve is arranged between the upper and lower positioning blocks, and a cylinder sleeve is arranged inside the cylinder sleeve. There is a piston that can be lifted and lowered. The valve stem is provided with a lifting block. The lifting block is matched with the lower end of the piston. There is also a casing outside the valve stem. slotted hole, and there is a step on the valve stem, the step can drive the valve disc to move down, the upper end of the sleeve is connected to the piston, the sleeve is provided with left and right vertical holes distributed left and right, the left vertical hole and the right vertical hole The upper ends of the holes communicate with the piston cavity above the piston respectively. The valve disc is provided with a liquid inlet hole and a liquid discharge hole distributed on the left and right. The liquid inlet hole is connected with the lower end of the left vertical hole and is controlled by the lower plug head. The liquid hole communicates with the lower end of the right vertical hole and is controlled on-off by the upper plug. The invention makes the opening and closing of the shut-off valve easier and labor-saving.

Description

technical field [0001] The invention relates to an improved invention of a shut-off valve, in particular to an improved invention of a shut-off valve for pipelines. Background technique [0002] Globe valve is a valve widely used in oil pipelines, natural gas pipelines, fire protection systems, chemical systems and related industrial systems. During the use of traditional globe valves, the fluid has a large pressure difference between the front and back of the disc. During the process, the pressure difference is large, and when the valve is opened or closed, the torque is large, and it is difficult to open or close. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a shut-off valve for pipelines that makes opening and closing easier and labor-saving. [0004] In order to solve the above-mentioned technical problems, the present invention adopts the following technical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K1/02F16K1/36F16K1/32F16K27/02F16K31/60
CPCF16K1/02F16K1/32F16K1/36F16K27/02F16K31/60
Inventor 周永竖
Owner 希佛隆阀门集团有限公司
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