Mechanical seal manufacturer Types of new mechanical seal technologies

At present, the new technologies of various mechanical seals using new materials and processes have made rapid progress, including the following new mechanical seal technologies.

In recent years, the grooved seal technology on the sealing face of the mechanical seal has opened a variety of grooves to produce hydrostatic and dynamic pressure effects, which is still being updated. Zero leakage sealing technology used to think that it was impossible for contact and non-contact mechanical seals to achieve zero leakage (or no leakage) for mechanical seals used in desulfurization pumps. Israel put forward a new concept of zero leakage non-contact mechanical end face seal by using slotted seal technology, which has been used in lubricating oil pumps of nuclear power plants.

Dry running gas seal technology This type of seal uses slotted seal technology for gas seal. Upstream pumping sealing technology is to pump a small amount of downstream leakage fluid back to the upstream by using a flow groove on the sealing surface.

The structural characteristics of the above types of seals are as follows: shallow grooves are used, and the film thickness and the depth of the chute mixing mechanical seal are all in the micron level, and lubrication grooves are used, radial sealing dams and circumferential sealing weirs form the sealing and bearing parts. It can also be said that the grooved seal is the combination of plane seal and grooved bearing. Its advantages are small leakage (even no leakage), large film thickness, elimination of contact friction, low power consumption and heat generation.

Thermohydrodynamic seal technology uses various deep sealing surface grooves to cause local thermal deformation to produce hydrodynamic wedge effect. This kind of seal with hydrodynamic bearing capacity is called thermohydrodynamic wedge seal.

Bellows sealing technology can be divided into formed metal bellows and welded metal bellows mechanical sealing technology.

Multi face seal technology includes double seal, intermediate ring seal and multi seal technology.

In addition, there are parallel face sealing technology, monitoring sealing technology, combined sealing technology, etc.