Disassembling-free skeleton-free shaft oil seal and seal maintaining operation process of speed reduction box

Abstract

The invention provides a disassembling-free skeleton-free shaft oil seal and a seal maintaining operation process of a speed reduction box. The disassembling-free skeleton-free shaft oil seal comprises an oil seal ring (1), an oil seal lip (2) and a spring ring (3), and is characterized in that the oil seal and the oil seal ring (1) are provided with an outer seal gasket (4) in a conjoined mode, and the oil seal and the oil seal lip (2) are provided with an auxiliary oil seal lip (5) in a conjoined mode. The maintaining process comprises the following steps: 1, knowing about the condition of an oil well to the scene; 2, confirming that a power supply is cut off to stop / brake; 3, examining oil leakage part of the speed reduction box of an oil extractor and confirming the operating order; 4, examining whether the vent hole of the speed reduction box of the oil extractor is ventilated; 5, fixing the oil extractor; 6, disassembling parts and large elements on the machine; 7, maintaining for the oil leakage of an output shaft; 8, maintaining the speed reduction box for box assembling oil leakage; 9, maintaining the speed reduction box for oil leakage of a shaft sleeve; 10, painting; 11, examining and accepting; and 12,starting up and operating. The maintaining operating process provided by the invention is time-saving and labor-saving, and a great amount of capital can be saved.

Description

technical field [0001] The invention belongs to an oil seal for a gear box of an oil pumping unit in an oil field and a seal maintenance process for a gear box. technical background [0002] At present, the oil seal used for shaft sealing is made of a circular metal frame, and an oil seal lip made of rubber is arranged on the metal frame. The oil seal lip is covered with a spring frame. The rubber oil seal lip serves the purpose of sealing oil, and the wear life of dry rubber is short. Therefore, the working surface between the oil seal and the shaft is very prone to oil leakage, so that the oil seals of pumping units and gearboxes used in the oil field are often replaced, and the heavy crank must be often removed by a crane to replace the oil seal of the small reducer shaft. This is not only time-consuming and laborious, but also Caused a lot of inconvenience to maintenance personnel. Because the shaft oil seals of the pumping unit reduction box in each oil field are all t...

AI Technical Summary

Problems solved by technology

If there is oil leakage from the head of the shaft, remove the large groove with a crane, open the gland, remove the old oil seal along the shaft, push the oil seal of the new rubber inner frame along the axial direction, and install the large groove wheel with a crane Well, if such a machine stops, at least one or two days will be time-consuming, labor-intensive, and expensive, and it will affect oil production, and the site will be chaotic, leaving a lot of work for the well watchers.

At present, the oil leakage of the closing box is generally tightened or the surrounding seams are coated with a layer of adhesive. Even if there is no oil leakage at the time, the resin or adhesive will be completely solidified for 24 hours. Moreover, the resin and adhesive are rigid and have no elasticity. Once the oil machine is turned, the resin and adhesive will crack again in a short period of time, and oil leakage will occur again. The conventional overhaul is to seal, just open the upper cover, scrape the surface, apply sealant to the table cover, and tighten the thread to end. This does not solve the oil leakage problem at all.

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