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Improved high-pressure needle valve and quick replacement method thereof

A high-pressure needle and improved technology, which is applied in the direction of valve lift, valve details, valve device, etc., can solve problems such as waste, and achieve the effects of avoiding waste, saving production costs, and improving productivity

Active Publication Date: 2017-10-10
GANSU TIANEN HEAVY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because it cannot be disassembled, it can only be discarded as a whole and replaced with a new high-pressure valve assembly, resulting in a lot of waste

Method used

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  • Improved high-pressure needle valve and quick replacement method thereof

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Embodiment Construction

[0032] An improved high-pressure needle valve, including a valve body 1, a valve seat 2, a valve core 4, a valve cover 15, a valve stem 18 and a hand wheel 19, and the valve body 1 is provided with a valve seat 2, a valve core 4 and a valve stem 18 , the valve body 1 is fastened with the valve cover 15; the valve core 4 is provided with an inner sealing cone 24, and the valve seat 2 is provided with an outer sealing cone 21 and an inner sealing cone 22, the valve body 1 is provided with an outer sealing cone 23, the inner sealing cone 24 and the inner sealing cone 22 are bonded to form an inner line seal, and the outer sealing cone 21 and the outer sealing cone 23 form an outer line seal . The spool 4 is provided with a groove and a retaining ring 7, the T-shaped end of one end of the valve stem 18 extends into the groove of the spool 4, the retaining ring 7 locks the T-shaped end, the retaining ring 7 and the T-shaped An adjustment pad 6 is provided between the blocks. A se...

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Abstract

The invention relates to the technical field of valve equipment, in particular to an improved high-pressure needle valve. When wear failures happen during operation, the new technology capable of reducing cost and simple in maintenance is adopted. A taper structural form is adopted in each of a valve element, a valve seat and a valve body. An inner-layer sealing taper body is arranged on the valve element. An outer-layer sealing taper body and an inner-layer sealing taper face are arranged on the valve seat. An outer-layer sealing taper face is arranged on the valve body. The inner-layer sealing taper body and the inner-layer sealing taper face are attached to form inner-layer linear sealing, and the outer-layer sealing taper body and the outer-layer sealing taper face form outer-layer linear sealing. The improved high-pressure needle valve is convenient to machine, simple in structure and convenient to demount and mount and is especially suitable for simple replacement treatment of accident conditions happening in the operating process of special vehicles of oilfields.

Description

technical field [0001] The invention relates to the technical field of valve equipment, in particular to an improved high-pressure needle valve and a quick replacement method thereof. Background technique [0002] Compared with other types of valves, high-pressure needle valves can withstand greater pressure and have better sealing performance, and are suitable for sealing of higher pressure gas or liquid media. It is especially suitable for use on fracturing trucks and well washing trucks of oil production equipment in oil fields. Because threaded connection is adopted between the valve core and the valve rod, between the valve seat and the valve body. The inner cavity of the valve body is constantly eroded and corroded by various fluid media. After the valve body has been used for a period of time, the parts and threaded connections will be severely corroded. When the sealing performance is reduced due to wear or corrosion, the valve core needs to be replaced. In the actu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/02F16K1/38F16K1/42F16K27/02
CPCF16K1/02F16K1/38F16K1/42F16K27/0254
Inventor 赵鹏
Owner GANSU TIANEN HEAVY TECH CO LTD
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