Underwater electrohydraulic control valve

An electro-hydraulic control valve and electromagnetic technology, which is applied in the field of solenoid valves for well control devices and solenoid valves that control pilot fluid on and off, can solve problems such as not being able to meet the high-pressure system, not being able to apply underwater, and small valve core volume, etc., to achieve Facilitate product serialization, simple structure, fast response effect

Active Publication Date: 2008-12-17
河北华北石油荣盛机械制造有限公司
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Problems solved by technology

For example, the Chinese patent announcement number is CN1643283 (patent number: 03806366.2). The second type of solenoid valve has compact structure, fast action and less leakage, but because the solenoid coil directly contr

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  • Underwater electrohydraulic control valve

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Embodiment 1

[0017] refer to figure 1 . The underwater electro-hydraulic control valve is composed of an electromagnetic part and an oil pressure end 14. The upper half is the electromagnetic part, and the lower half is the oil pressure end 14.

[0018] The electromagnetic part is mainly composed of cable plug 1, terminal board 2, shell 3, spring sleeve 4, electromagnetic coil 5, compression spring 6, iron core 7, iron core sleeve 8, wire plug 9, gland 10, screw 11, fixing screw 12 , Push rod 13 and oil pressure end 14 are made up.

[0019] One end of the cable plug 1 is inside the cylindrical shell 3, and the other end of the cable plug 1 is outside the shell 3. There is a sealing ring on the cylindrical contact surface and the contact plane between the cable plug 1 and the shell 3, and the sealing ring is in the Seawater can be prevented from entering the shell 3 . A terminal board 2 is arranged in the cable plug 1, and some power amplifier circuits are housed on the terminal board 2...

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Abstract

The invention relates to an underwater electro-hydraulic control valve which is applied on a well control device used for deepwater drilling construction. A magnetic valve consists of an electromagnetic part and an oil pressure end. A spring sleeve and an iron core sleeve are arranged in the interior of a shell, sealing rings are arranged between the outer wall of the spring sleeve and the inner wall of the shell and between the outer wall of the iron core sleeve and the inner wall of the shell. A mandril is arranged at the lower part of the cylindrical iron core. When a magnetic coil generates magnetic force, the iron core and the mandril move. The oil-pressure end is fixed in the central hole of a pressing cover; the mandril is arranged at the upper part of the central hole of the valve body and a ball valve is arranged at the lower part of the central hole of the valve body. The control valve has the effect that: the valve can be used for controlling fluid with high pressure and small flow and is suitable for working in severe deepwater environment. The control valve meets the requirement of fast responsiveness, can work normally in a high pressure guiding fluid system simultaneously, and has iron core and mandril lubricating function, with simple structure, compactness, reliable sealing performance and fast response speed.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling machinery, in particular to a solenoid valve for a well control device used in deepwater drilling construction, in general, it is a solenoid valve for controlling the on-off of a pilot fluid. Background technique [0002] The current electromagnetic valve can be roughly divided into two types, one is composed of a spool valve core and an electromagnet part for controlling the movement of the spool valve core. Such as the Chinese patent announcement number is CN1644913 (patent number: 200410092753.6), the solenoid valve provided. This kind of solenoid valve can control the on-off of multiple flow channels to achieve more complex control objectives. However, due to the complex structure of the slide valve, the machining accuracy is difficult to guarantee, and internal leakage or instability often occurs. The second is to directly control the movement of a ball valve spool by the solenoid...

Claims

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Application Information

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IPC IPC(8): E21B34/04F16K31/02
Inventor 耿艳东许宏奇王俊洲王肖
Owner 河北华北石油荣盛机械制造有限公司
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