Intelligent valve made of zirconium tungstate negative thermal expansion material

Abstract

The invention discloses an intelligent valve made of a zirconium tungstate negative thermal expansion material. The intelligent valve is made of the composite material formed by combining zirconium tungstate and graphene. An electric heating wire is arranged in the valve, and the valve is connected to a control circuit. The valve is prepared through a 3D printing technology. A flow sensor is installed in the pipeline, and a controller is arranged and connected with the flow sensor. When the flow in a pipeline reaches a lower threshold, a variable voltage power source supplies electricity to the valve made of the intelligent material, the valve structure is heated, the material structure is driven to generate a heat-shrinkable effect, a channel is opened, and the flow is increased. The novel material serve as the core structure of the valve, the zirconium tungstate negative thermal expansion material and a graphene ultralight material are combined to achieve high temperature resistance,high conductivity and good mechanical properties, the effect of accurately regulating the flow in the pipeline can be achieved, and thus the intelligent valve can be applied to flow control of the pipeline under various environments and has good industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to an intelligent valve made of zirconium tungstate material with negative thermal expansion. Background technique [0002] According to the existing literature, there are three commonly used valves. The solenoid valve is powered by electromagnetic force, driven by a coil, and can only be opened or closed, and the action time is short when switching. Solenoid valves generally have a small flow coefficient and a small working pressure difference. The adjustment accuracy of solenoid valve products is limited. It usually only has two states of on and off, and the valve core can only be in two extreme positions, which cannot be adjusted continuously. Secondly, the use of the solenoid valve is affected by the temperature and viscosity of the medium, and has high requirements for the cleanliness of the environment. It cannot adapt well to the medium containing particles, and a filter nee...

AI Technical Summary

Problems solved by technology

Therefore, it can be seen that the use methods of the existing types of valves are subject to different restrictions, and they do not have the characteristics of universal use, and some valves have high cost of use, which are only suitable for industrial production and are not practical for civilian popular products.

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