Mechanical seal protection device

Abstract

The invention discloses a mechanical seal protection device, and belongs to the technical field of auxiliary devices used in oil field oil production fields. The protection device comprises a connecting body, a sand throwing wheel, an anti-disengaging sleeve, a bearing, a shaft, a supporting seat, a mechanical seal, a protector head, heavy oil, a sand discharging port, a produced liquid, a sealingspace and a long hole. The mechanical seal protection device has the beneficial effect that firstly, an oil well output liquid can be isolated through the heavy oil, so that the mechanical seal cannot be corroded by corrosive media such as water and hydrogen sulfide in the oil well output liquid; the heavy oil does not have corrosivity, and further has certain lubricating performance; the workingenvironment of the mechanical seal can be well guaranteed; and secondly, the sand throwing wheel can synchronously rotate at high speed with the shaft to generate centrifugal force, so that the solidparticle impurities are prevented from being deposited in the space of the mechanical seal working area, the normal work of the mechanical seal is ensured, and the service life of the mechanical sealis prolonged.

Description

technical field [0001] The invention belongs to the technical field of auxiliary devices used by electric submersible pumps in the field of oil production in oil fields, and in particular relates to a mechanical seal protection device. Background technique [0002] In the process of using the electric submersible pump system to lift oil, the sealing of motors, protectors and other equipment has always been the focus and difficulty that people need to pay attention to. Because the outside is in direct contact with oil well production fluid, the working environment is complicated and harsh. Because the well fluid may contain a large amount of corrosive media such as water and hydrogen sulfide, there may also be solid or semi-solid impurities such as sediment, stones, minerals, asphalt, and dead oil lumps. These substances will seriously affect the work of the mechanical seal, resulting in a decrease in the sealing performance of the mechanical seal, a reduction in life, and e...

AI Technical Summary

Problems solved by technology

These substances will seriously affect the work of the mechanical seal, resulting in a decrease in the sealing performance of the mechanical seal, a reduction in life, and even damage to the leak.

[0003] In the existing electric submersible pump system, there are few protective measures for the mechanical seal, and it is not uncommon for the entire electric submersible pump system to fail due to damage or failure of the mechanical seal.

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