Air pressure reducing valve for ships

A technology for ships and pressure reducing valves, which is applied in safety valves, balance valves, valve devices, etc., can solve the problems that ordinary air pressure reducing valves cannot be applied to ships, and achieve improved working sensitivity and sealing, high working reliability, Structural Advanced Effects

Inactive Publication Date: 2017-11-17
SHANGHAI JINGHEHAI MARINE VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an air pressure reducing valve for ships to solve the problem that the existing ordinary air pressure reducing valves cannot be applied to ships

Method used

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  • Air pressure reducing valve for ships

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] see figure 1 , the air pressure reducing valve for ships shown in the figure includes a valve body 100, which has an upper chamber 110, a lower chamber 120 and a shut-off valve hole 130 in the valve body 100, the upper chamber 110 is an air outlet chamber, and the lower chamber 120 is The air intake chamber and the shut-off valve hole 130 are used to communicate with the upper and lower chambers 110 and 120; The upper chamber 110 flows out through the upper chamber 110 .

[0024] Valve body 100 is also provided with valve stem hole 140 and lower cover threaded hole 150, valve stem hole 140 communicates with upper chamber 110, lower cover threaded hole 150 communicates with lower chamber 120, valve stem hole 140, shut-off valve hole 130 and The threaded holes 150 of the lower cover are coaxially arranged on the same vertical line.

[0...

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Abstract

The invention discloses an air reducing valve used for ships. The air reducing valve comprises a valve body, a lower cover, a guide sleeve, a valve rod, an upper cover, a membrane, an ejector rod, an adjusting screw, an upper spring cushion, a lower spring cushion and a spring. The interior of the valve body is provided with an upper cavity, a lower cavity and a shutoff valve hole. The upper cavity serves as an air outlet cavity. The lower cavity serves as an air inlet cavity. The shutoff valve hole is used for enabling the upper cavity to communicate with the lower cavity. An air cylinder chamber is formed by the bottom of the guide sleeve and the hole bottom of a guide sleeve hole. An air cylinder pressure adjusting hole is formed in the portion, between the middle and the lower end, of the valve rod. The air cylinder pressure adjusting hole enables the air cylinder chamber to communicate with the upper cavity of the valve body. According to the air reducing valve, the pressure reducing range is adjusted through the combined action of the pressure adjusting screw, the spring, the membrane and downstream pressure, and the air reducing valve has the advantages that the pressure reducing range is wide, the pressure reducing precision and the pressure stabilizing precision are high, and the output pressure of the reducing valve can be automatically kept being a set pressure value.

Description

technical field [0001] The invention relates to an air decompression device, in particular to an air decompression valve for ships. Background technique [0002] Most of the existing ship power systems are pneumatic, so the compressed air output by the air compressor needs to be decompressed. The air pressure reducing valve for ships is a valve that provides compressed air pressure to keep the standard value constant in order to ensure the safe and reliable operation of the ship. At present, the air pressure reducing valves specially used for ships generally use ordinary air pressure reducing valves, and these ordinary air pressure reducing valves generally have the problems of low service life, poor pressure stability, and poor sensitivity. Furthermore, the matching gap between the valve stem and the lower cover in the existing air pressure reducing valve is unreasonable, resulting in poor frictional resistance and guiding precision, poor working sensitivity and sealing pe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K17/30
CPCF16K17/30
Inventor 王金泉
Owner SHANGHAI JINGHEHAI MARINE VALVE
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