Efficient energy-saving environment-friendly mechanical sealing device

Abstract

The invention belongs to the field of oil field equipment and discloses an efficient energy-saving environment-friendly mechanical sealing device which is sealed up tight and simple and convenient for replacement. The efficient energy-saving environment-friendly mechanical sealing device is characterized in that a spiral nut is in threaded connection with a bearing block, the upper end of a secondary seal is inserted into the bearing block, a pressing cap is mounted at the upper end of the secondary seal, a thrust ball bearing is mounted between the pressing cap and the bearing block, the secondary seal is inserted into a primary seal which is in threaded connection with a connecting nut, the upper end of the connecting nut is hooked on a boss on the secondary seal, an external thread of the secondary seal at the upper end of the connecting nut is connected with an upper lock nut, a set limiting screw is arranged on the primary seal, a centralizing sleeve is arranged inside the secondary seal, a primary seal part is arranged at the inner bottom end of the primary seal, the primary seal is fixedly connected with an upper deviation adjusting body, deviation adjusting fastening bolts are in threaded connection with a lower deviation adjusting body, and a connector is fixed on the lower deviation adjusting body. The efficient energy-saving environment-friendly mechanical sealing device is compact in structure and simple and easy for mounting and replacement of sealing strips, and is sealed up tight.

Description

technical field [0001] The invention belongs to the field of oilfield equipment, in particular to an oilfield wellhead sealing device. Background technique [0002] Oilfield wellhead sealing has always been a problem that needs to be solved in all countries in the world. The corresponding wellhead sealing devices are also varied. Packing box sealing is a relatively common sealing method. The replacement method of the seal is quite cumbersome, not only the replacement time is long, but also the replacement is quite troublesome, and sometimes it is easy to cause the risk of blowout if you are not careful. Contents of the invention [0003] The purpose of the present invention is to provide a high-efficiency, energy-saving and environment-friendly mechanical seal device with tight seal and simple and convenient replacement. [0004] In the present invention, there is a gap in the side wall of the screw nut, and the side wall of the central hole of the screw nut is a spiral c...

AI Technical Summary

Problems solved by technology

[0002] Oilfield wellhead sealing has always been a problem that countries all over the world need to solve, and there are various corresponding wellhead sealing devices. Packing box sealing is a more commonly used sealing method. After a long period of work, the packing is severely worn and needs to be replaced. The replacement method of the seal is quite cumbersome, not only the replacement time is long, but also the replacement is quite troublesome, and sometimes it is easy to cause a blowout hazard if you are not careful

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