High-viscosity liquid micro-pressure relief equipment

Abstract

The invention provides high-viscosity liquid micro-pressure relief equipment which comprises a first pressure relief assembly, a second pressure relief assembly and a control assembly, the first pressure relief assembly is used for sensing and buffering pressure fluctuation of liquid in a medium channel, the control assembly is hinged to the first pressure relief assembly and the second pressure relief assembly, and when the pressure in the medium channel is increased, the control assembly is connected with the first pressure relief assembly and the second pressure relief assembly. The first pressure relief assembly drives the control assembly, and the control assembly controls the second pressure relief assembly to enable the medium channel to be communicated with the outside for pressure relief. The high-viscosity liquid micro-pressure relief equipment can be effectively suitable for pressure control of high-viscosity liquid, particularly pressure control of high-viscosity reaction liquid formed in the polysulfone resin production process, the pressure of the high-viscosity reaction liquid is controlled within a small fluctuation range, fluctuation of medium pressure is reduced, the stability of system control is guaranteed, and the production efficiency is improved. And the influence on a downstream production process is avoided.

Description

technical field [0001] The invention belongs to the field of process pressure control, and relates to a fluid pressure relief device, in particular to a micro-pressure relief device for high-viscosity liquid. Background technique [0002] High heat-resistant resins, such as polysulfone resins, polyphenylene sulfide resins, polyether ether ketone resins, polyarylether nitrile resins, etc., have excellent heat resistance and good mechanical properties, dielectric properties, and corrosion resistance etc.; and molded products, fibers, films or foam materials can be obtained by extrusion, injection molding, etc., and have good processing performance, and are widely used in aerospace, medical, electrical and electronic, chemical and other fields. [0003] The above-mentioned types of resins are usually prepared by polycondensing the raw materials to form a reaction solution, and then transporting the reaction solution to the downstream unit for granulation. This kind of polycond...

AI Technical Summary

Problems solved by technology

The rupture disc is damaged after blasting and cannot be repaired in a short time, affecting normal production

When the safety valve releases pressure, it needs to exceed the set pressure for a certain pressure value to push the safety valve to release the pressure. The pressure stability difference is relatively large, and the traditional safety valve is not specially suitable for high-viscosity fluids, so that when it works in high-viscosity fluid media It is prone to sticking and makes the overpressure relief action insensitive. For example, due to the viscosity of the medium, the valve core opens slowly when the overpressure is over, which further aggravates the disadvantage of poor pressure stabilization ability, and the high-viscosity fluid between the valve core and the valve seat It is easy to cause the safety valve to not close tightly when returning to its position after pressure relief, resulting in leakage

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