FIELD: sealing facilities used for pressurizing of shafts for pumps adapted for pumping out of inflammable, toxic and like liquids.
SUBSTANCE: end sealing device has main and auxiliary steps, whose rotating rings of friction couples are located within cartridge, source and device for feeding of cutoff liquid, and hermetically sealed drain chamber. Sealing device includes source and unit for feeding of separating liquid. Main step of sealing device is made in the form of hydraulic gate consisting of double sealing layer, and auxiliary step is made in the form of single layer and is incorporated within separation liquid feeding contour. Hermetically sealed reservoir connected to separation liquid feeding contour through cutoff-adjusting apparatus is adapted for discharge of cutoff liquid and separation liquid.
EFFECT: enhanced reliability in operation of sealing device.
5 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| MULTI-STAGE END SEAL FOR REVOLVING SHAFT | 1996 |
|
RU2116536C1 |
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|
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|
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|
RU2701492C1 |
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|
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| END SEALING DEVICE FOR ROTARY SHAFT | 2002 |
|
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| SECTIONAL HYDRAULIC DISTRIBUTOR WITH MECHANICAL MANUAL CONTROL AND WORKING SECTION OF SECTIONAL HYDRAULIC DISTRIBUTOR WITH MECHANICAL MANUAL CONTROL | 2006 |
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RU2320902C2 |
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|
SU943451A1 |
| MAINLINE ISOLATION VALVE OF MODULAR DESIGN FOR INTERNAL INSTALLATION, HIGH PRESSURES AND TEMPERATURES | 2007 |
|
RU2355934C2 |
