Ultralow temperature electromagnetic valve and application thereof

Abstract

The invention discloses an ultralow temperature electromagnetic valve. The ultralow temperature electromagnetic valve comprises a barreled valve body and a valve element, an inlet and an outlet used for allowing ultralow temperature media to enter and exit are formed in the barrel wall of the valve body; the valve element is coaxially arranged in an inner cavity of the valve body and is in clearance fit with a cylinder face, the valve element is sleeved with a spring abutting against the end of the valve body, a groove is formed in the position, located on the peripheral surface of the inner cavity of the valve body, of the valve element, and the barrel wall of the valve body is provided with a first channel and a second channel; an auxiliary valve element assembly capable of controlling off or on of the two channels is arranged between the two channels; and the two channels are off or on through the auxiliary valve element assembly, and the valve element can be controlled to abut against or be separated from a valve opening to achieve off or on of the ultralow temperature media. The ultralow temperature electromagnetic valve is simple in structure, rapid and convenient to assemble and convenient to maintain; replacement and use of multiple product electromagnet assemblies can be achieved; the ultralow temperature electromagnetic valve can be widely applied to industries of electromagnetic valves, electronic control and the like; and the electromagnetic valve is particularly suitable for LNG, liquid nitrogen and other ultralow temperature media.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic valves, and more specifically relates to an ultra-low temperature electromagnetic valve and its application, especially suitable for the control of ultra-low temperature media such as LNG and liquid nitrogen. Background technique [0002] Ultra-low temperature solenoid valve is a solenoid valve used in ultra-low temperature environment, and is widely used in the control of ultra-low temperature media such as LNG and liquid nitrogen in various ultra-low temperature environments. [0003] Patent document CN204312734U discloses a cryogenic solenoid valve, which includes a valve head and a solenoid coil assembly. The valve head includes a valve body and a valve cover. In the valve cavity between the discharge channels, a valve stem is provided for the lifting drive in the electromagnetic coil, and the valve stem is an extended valve stem. The outer end of the extended valve stem is provided wi...

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Problems solved by technology

[0004] Due to the ultra-low temperature environment, the sealing requirements of the solenoid valve are very high, especially the sealing between the valve body and the valve core. In the above technical solution, the conventional seal is used between the valve body and the valve core, which makes the sealing effect poor. , Moreover, in order to strengthen the sealing effect in this scheme, multiple sets of sealing devices are set up. On the one hand, the whole valve body is larger in size and complex in structure; greatly reduced sex

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