Principle and application of pneumatic hydraulic safety valve
The technology of pneumatic hydraulic is becoming more and more mature and widely used.
Then Jiuli will discuss the principle and application of pneumatic hydraulic safety valve with you?
Pneumatic hydraulic safety valve:
"Pneumatic hydraulic safety valve" is a safety device widely used in hydraulic power system and hydraulic equipment, and can also be used as a pressure limiting device, It is a special valve, which is different from the traditional valve. The traditional valve uses mechanical metal spring as the power, which can only be limited to medium and low pressure. When the pressure limit exceeds 10MPa, it can only be designed to increase the volume. Therefore, when the traditional valve acts on the high pressure and ultra-high pressure hydraulic power system and hydraulic equipment, the volume is bulky, the structure is complex and the manufacturing is difficult In the process of use, the fatigue change of metal spring makes the pressure limiting parameters fluctuate greatly, so it should be adjusted frequently to ensure normal use. Due to the high rigidity of spring material, it can not be made of stainless steel and other anti-corrosion materials. The anti-corrosion ability of the product is poor and the service life of the valve is not long.
Pneumatic hydraulic safety valve:
"Pneumatic hydraulic safety valve" adopts high-pressure gas as power source and adopts the design scheme of changing the ratio of cylinder block and valve core. The product has simple structure, small volume and stable pressure limit. It can realize the pressure limit from 0.1 MPa to thousands of MPA, and the product cost is greatly reduced. The special design of "pneumatic hydraulic safety valve" can also act on the pressure bearing pillar safety valve of mine hydraulic support system. In the process of bearing formation pressure, slow pressure yielding (i.e. the pressure keeps constant with the change of formation pressure) and fast yield (i.e. instantaneous pressure relief in one second during roof fall) are realized to ensure equipment damage and personnel safety.
Pneumatic hydraulic safety valve:
As the "pneumatic hydraulic safety valve" has two levels (slow and fast) pressure relief function and pressure limiting function from low to ultra-high pressure; it has the advantages of stable and reliable pressure limiting and pressure relief and good anti-corrosion performance, the patented product can greatly improve and expand the quality and performance of hydraulic power system and hydraulic equipment, mine support equipment. At the same time, with the development of material technology, it is possible to design hydraulic products with better performance and smaller body shape. The patented product also has the characteristics of repeated inflation and repeated use, and its service life is several times longer than that of traditional products.