CYT DRY GAS SEAL TECHNOLOGY
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Chengdu Yitong seal Co,. Ltd.

Sealing development ChengDu YitongSeal Co.,ltd Dynamic seal frontier technology Dry gas seal Low carbon, Environment al protection No pollution, energy saving, environmental protecti on, low power consumption, long service life, small leakage, wide application range, simple system Manufacture technology Mechanical seal wear debris, good sealing, small leakage, stable p erformance, complex structure, restricted by the PV value, oil station complex Original technology Packing seal Low technology, short service life, high po wer consumption

Dry gas seal principle and development 成都一通密封有限公司 ChengDu YitongSeal Co.,ltd Dry gas seal is a new type and non-contact seal developed from the basis of gas dynamic pressure bearing in the end of the sixty's in twentieth century. The seal uses the principle of fluid dynamics, through opening the dynamic pressure groove on the sealing surface to achieve non-contact operation of the seal face. Normally, the seal gas through the dynamic pressure groove into the sealing face, gas is compressed, forming gas film counterforce; and after the sealing surface is pushed away, the seal is in the state...

成都一通密封有限公司 ChengDu YitongSeal Co.,ltd Principle dynamic demonstration Force diagram dynamic demonstration

成都一通密封有限公司 ChengDu YitongSeal Co.,ltd Dry gas seal rotating ring diagram (see left chart). The sealing surface of rotating ring after grinding and polishing is processed into the fluid dynamic pressure groove with special effects. When the dry gas seal rotary ring is rotating, the sealing gas is sucked into the dynamic pressure groove from the external diameter toward center, and the radial component is moving towards the sealing weir. Due to the choking effect of the sealing weir, the gas is compressed and the gas pressure increase. Under the pressure, the sealing surface is pushed away....

Dry gas seal characteristics spring ChengDu YitongSeal Co.,ltd lDefinition: dry running, non-contact Rotating ring Rotating ring mechanical seal lappearance characteristics: shallow groove with a certain number of uniformly distributed. Equipment cavity lBasic composition: fluid dynamic pressure groove, sealing dam and sealing weir. lCore principle: dynamic pressure effect. Shaft sleeve lOperating characteristics: non-contact gap 2~4um. lSpecial emphasis: pressure directionality Rotating shaft Characteristics lnon-contact seal, no abrasion(no wear debris), almost no heat; lCancel the...

Dry gas seal dynamic pressure effect ChengDu YitongSeal Co.,ltd Fluid dynamic groove

ChengDu YitongSeal Co.,ltd Closing force Opening force Closing force equals spring force and medium force 7 Gas film pressure distribution

ChengDu YitongSeal Co.,ltd Closing force Opening force Closing force equals spring force and medium force 8 Gas film pressure distribution

ChengDu YitongSeal Co.,ltd Closing force Opening force Closing force equals spring force and medium force 9 Gas film pressure distribution

成都一通密封有限公司 ChengDu YitongSeal Co.,ltd Characteristics: PLAN74 double face ①. The "gas blocking" replaces the traditional "liquid blocking" principle, that is, the sealing gas with pressure instead of sealing fluid, ensure that the process media achieve “zero leakage”. ②. The whole seal is non-contact operation. Its power consumption is only 5% of the traditional double seal. The use of life is 5 times longer than the traditional seal. ③. Simple structure of the auxiliary system ensure that the process media is not subject to pollution and process media do not leak to the atmosphere, which...

PLAN74 pump dry gas seal control system 1 - upset drain, normally dosed 2 - gas inlet, normally open 3 - Alter drain, normally closed

ChengDu YitongSeal Co.,ltd Comparison between dry gas seal and mechanical seal for pump l Seal oil unit, cooling unit, fluid infusion unit, monitoring unit, system is more complex. l Through the liquid level and pressure monitoring seal leakage, a lot of signal and larger input. l System cost is higher. 12 l Sealing gas filter unit, adjusting unit, control unit, the system is small, and the process is simple. l Only need to pressure monitoring, that is, monitor the seal leakage. l System cost is lower.

ChengDu YitongSeal Co.,ltd Comparison between dry gas seal and mechanical seal for pump l Mechanical seal is the contact seal; spring pressure is relatively large; and energy consumption is relatively high. l Seal technology is quite mature; the l Dry gas seal is non-contact seal; energy consumption is only 5% of mechanical seal. l In order to ensure the long period performance of dry gas seal, each seal is product ex-factory for sampling, the required to do bench test. The cost of design, processing and testing is relatively higher. the seal is more expensive than mechanical seal.

ChengDu YitongSeal Co.,ltd Comparison between dry gas seal and mechanical seal for pump l Double seals are relatively safe. l Double seals are relatively safe. l The seal of atmosphere side has a little l Sealing gas mainly adopts nitrogen. A sealing liquid leakage, which impacts little leakage to the environment does not lead to any pollution on the scene, and very environmentally.

ChengDu YitongSeal Co.,ltd Comparison between dry gas seal and mechanical seal for pump l Double seals are relatively safe. l Double seals are relatively safe. l The seal of atmosphere side has a little l Sealing gas mainly adopts nitrogen. A sealing liquid leakage, which impacts little leakage to the environment does not lead to any pollution on the scene, l Due to the constant consumption of seal oil, regularly fill the oil is required. and very environmentally. l Adopts the pipeline nitrogen auto- Seal damage can cause seal oil filling, low consumption nitrogen, no pollution. Oil must be...

ChengDu YitongSeal Co.,ltd Comparison between dry gas seal and mechanical seal for pump

ChengDu YitongSeal Co.,ltd Conventional equipment (centrifugal pump) matching: a little variation in the price Mechanical seal Complete set price comparison Conventional equipment (centrifugal pump) reform: a little variation in the price