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Adjustable pressure magnetic liquid safety valve

A magnetic liquid and safety valve technology, which is applied in safety valves, valve details, valve devices, etc., can solve problems such as valve failure and valve body corrosion, and achieve the effects of simple structure, air pollution prevention, and high reliability

Active Publication Date: 2021-11-26
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional pressure-adjustable safety valves often use spring structures to adjust the pressure through changes in spring compression. However, in some working conditions, due to the particularity of the medium, it often leads to corrosion inside the valve body, resulting in the valve not being used normally.

Method used

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  • Adjustable pressure magnetic liquid safety valve
  • Adjustable pressure magnetic liquid safety valve
  • Adjustable pressure magnetic liquid safety valve

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Embodiment Construction

[0015] In order to facilitate the understanding of those skilled in the art, the present invention will be further described below in conjunction with the accompanying drawings, and the content mentioned in the embodiments is not intended to limit the present invention.

[0016] Such as figure 1 As shown, the pressure-adjustable magnetic liquid safety valve includes knob 1, scale 2, valve body 3, first flat key 4, rotating shaft 5, permanent magnet 6, second flat key 7, pressure relief port 8, pole shoe 9, Liquid storage tank 10, pole teeth 11, magnetic liquid 12.

[0017] Knob 1 is an integrated structure made of magnetically conductive material. There is a groove at the bottom of knob 1. One end of the rotating shaft 5 and the first flat key 4 are installed in the groove of the knob 1 to prevent the knob 1 from contacting the permanent magnet due to torque. 6 The rotation angle is inconsistent. The upper part of the pole shoe 9 is provided with grooves corresponding to the...

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Abstract

A pressure-adjustable magnetic liquid safety valve relates to the field of valves and includes a knob (1), a valve body (3), keys (4, 7), a rotating shaft (5), a permanent magnet (6), a pressure relief port (8), Pole shoe (9), pole teeth (11), magnetic fluid (12). The valve uses magnetic liquid sealing technology, the permanent magnet (6) provides a magnetic source, and forms a magnetic circuit with the pole shoe (9), knob (1) and valve body (3), so that the magnetic liquid (12) is adsorbed on the pole teeth (11), forming several liquid sealing rings. By rotating the knob (1), the distance between the pole teeth (11) and the inner upper end surface of the valve body (3) is adjusted, thereby determining different cracking pressure values. When the internal pressure of the container exceeds the preset value, the pressure will be automatically released through the pressure relief port (12). The valve has the advantages of simple structure, convenient operation, prevention of gas pollution, corrosion resistance and high reliability.

Description

technical field [0001] The invention relates to the field of valves, in particular to a pressure-adjustable magnetic liquid safety valve. Background technique [0002] The safety valve is a kind of opening and closing part, which is in a closed state under the action of external force. When the medium pressure in the connected equipment exceeds a certain pressure value, it can discharge the medium to the outside of the system to prevent the pressure balance of the medium in the equipment. Conventional pressure-adjustable safety valves often use a spring structure, and the pressure is adjusted by changing the compression of the spring. However, in some working conditions, due to the particularity of the medium, it often causes corrosion inside the valve body, resulting in the valve not working normally. Magnetic liquid is a nano-scale functional material, which consists of three parts, namely magnetic particles, surfactant and base carrier liquid. It has both the magnetic pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/08F16K37/00F16K17/22
CPCF16K17/22F16K31/08F16K37/0016
Inventor 于文娟李德才牛思放
Owner BEIJING JIAOTONG UNIV
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