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Two-position three-way reversing valve and reversing method used for small-flow liquid nitrogen low-temperature system

A low-temperature system, two-position three-way technology, applied in the field of reversing valve, can solve the problems of inability to use in cryoablation minimally invasive surgery system, inability to apply ultra-low temperature environment, inability to meet people's needs, etc., to improve the efficiency of cold-heat conversion , The effect of less cold loss and small volume

Active Publication Date: 2018-04-13
HYGEA MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, the market is full of valves of many varieties and specifications, such as hydraulic valves, pneumatic valves, vacuum valves and chemical valves, etc. Meet people's needs for use in ultra-low temperature environments, for example, cannot be used in cryoablation minimally invasive surgery systems

Method used

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  • Two-position three-way reversing valve and reversing method used for small-flow liquid nitrogen low-temperature system

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Embodiment Construction

[0031] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] In the description of the present invention, it should be noted that the terms "front", "rear" and "upper" and "lower" are determined based on the specific usage habits of the low-flow liquid nitrogen low-temperature two-position three-way reversing valve. It is for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. ...

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Abstract

The invention provides a two-position three-way reversing valve and a reversing method used for a small-flow liquid nitrogen low-temperature system. The reserving valve is a single electrical-controllever corrugated tube valve driven by an electromagnet, and comprises a valve body structure, a corrugated tube sealing structure, a lever hinge reinforcing structure and an electromagnet power generation structure, wherein the valve body structure comprises a valve seat, a double-conical-surface movable valve rod, an upper conical surface sealing base, a lower conical surface sealing base and a movable valve element connecting rod; the corrugated tube sealing structure comprises a corrugated tube and an elastic connector; and the lever hinge reinforcing structure comprises a first conductingpiston, a reinforcing connecting rod and a second conducting piston. The two-position three-way reversing valve has the advantages that the two-position three-way reversing valve is suitable for beingused under an ultra-low temperature environment, and is especially suitable for being used under a small-flow low-temperature environment. The cut-off valve principle is utilized for switching to thedouble-conical-surface movable valve rod for sealing and opening the upper conical surface sealing base and the lower conical surface sealing base so as to realize reversing of ultra-low-temperaturefluid. The two-position three-way reversing valve for the small-flow liquid nitrogen low-temperature system has the characteristics of a small size, a little cold loss, small leakage amount and quickresponse.

Description

technical field [0001] The invention relates to a reversing valve, in particular to a two-position, three-way reversing valve and a reversing method for a low-flow liquid nitrogen cryogenic system. Background technique [0002] At present, the market is full of valves of many varieties and specifications, such as hydraulic valves, pneumatic valves, vacuum valves and chemical valves, etc. It meets people's needs for use in ultra-low temperature environments, for example, it cannot be used in cryoablation minimally invasive surgery systems. Contents of the invention [0003] Aiming at the defects in the prior art, the present invention provides a two-position three-way reversing valve and a reversing method for a low-flow liquid nitrogen cryogenic system, which can effectively solve the above problems. [0004] The technical scheme that the present invention adopts is as follows: [0005] The invention provides a two-position three-way reversing valve used in a low-flow li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/044F16K27/02F16K31/06
CPCF16K11/044F16K27/0263F16K27/029F16K31/0624Y02E60/32
Inventor 程若凡黄乾富
Owner HYGEA MEDICAL TECH CO LTD
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