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Mechanical seals for vessels - installation and use

Release date:2016-08-15 00:00 Source:http://www.sychghbl.com Click:

Installation of mechanical seal for kettle

1, check the mechanical seal of the installation of the model, the specification is correct.

2, check the mechanical seal of the host and the installation of the related parts of the dimension accuracy, geometric accuracy and mutual relationship is in conformity with the technical requirements. Mainly in the following aspects:

(1) the mechanical sealing parts of the shaft (or sleeve) radial runout tolerances, the shaft (or sleeve) surface finish and outside diameter tolerance.

(2) the seal cavity and combined with the positioning end of the shaft gland (or sleeve) center line perpendicularity tolerance.

(3) installation of the rotating sealing ring shaft (or sleeve) end, chamfer end structure and finish the installation of mechanical seal shell hole.

(4) the axial displacement of the rotating shaft of the mechanical seal.

3, the installation of mechanical seals, should be kept clean, and do not allow the use of tools to beat the sealing element, in case of damage and damage.

4, the installation, dynamic, static ring surface should be coated with a layer of clean oil and turbine oil. The auxiliary sealing ring (including the dynamic ring and the static ring sealing ring) is also required to apply a layer of clean oil or turbine oil before installation, to ensure the smooth installation.

5, the static ring sealing ring in static ring back after the sealed end cover, should pay attention not to hurt the static ring end face, to ensure that the end surface of the static ring and the end cover is vertical to the central line, and pay attention to the anti rotary slot alignment anti rotation pin static ring back, but not in contact.

6, mechanical seal of the rotation part, rely on the spring seat of the two fixed screws and fixed, tighten the fixed screw, to ensure that the working length of the spring.

The use of mechanical seals

1, the host before starting to check the attached device with mechanical seal Kunshan kettle, cooling and lubrication system is perfect.

2, before starting the cleaning pipeline, to prevent rust impurities into the sealed cavity.

3, with the hand disc coupling, check whether easy axis rotation, if the disc is heavy, need to check the installation size is correct.

4, normal driving, the need to carry out static pressure test, check the mechanical seal face, sealing ring and sealing cover at the end of the sealing effect, if there is a problem, one by one to check the solution.

5, before the start of the host, should be kept sealed cavity filled with liquid or seal of the media, such as a separate seal system should be started, the cooling water system must also start circulation.

6, normal use, before the normal operation, to observe whether the temperature rise of the seal is normal, there is no leakage phenomenon. If there is a slight leak, you can run for a period of time, so that the end face fitting even more uniform, to reduce the amount of leakage to normal so far. Such as running 1-3 hours, the amount of leakage is still not reduced, it is necessary to check the car.

7, normal operating conditions, the temperature rise can be slow, and pay attention to the temperature rise and leakage of the face, such as all normal, can be put into production.


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