Polygonal thin-oil rubber sealed gas holder

Abstract

The invention relates to a gas holder sealing device, in particular to a polygonal thin-oil rubber sealed gas holder, namely a POR gas holder, and belongs to the technical field of mechanical engineering. In the POR gas holder, a self-supporting sealing system is arranged on a piston; derrick type corner slider sealing systems are arranged on two sides of the corner of an upright post; and the sealing systems mainly consist of more than three groups of sealing rubber rings and canvas. The polygonal thin-oil rubber sealed gas holder has obvious effect, can greatly enhance the sealing effect and loading capacity and integrates the advantages of a MAN-type gas holder and a novel gas holder, so the gas holder can be used for the reconstruction of the MAN-type gas holder and can be popularized in the gas cabinets.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering and relates to a gas holder sealing device, in particular to a polygonal thin oil rubber sealed gas holder-POR type gas holder. Background technique [0002] In the dry gas cabinet, the gas cabinet that uses thin lubricating oil as the sealing medium for sealing is generally popular because of its good sealing performance. It achieves balance through the weight of the piston and the air pressure. When the pressure of the pipe network is greater than the weight of the piston The piston rises, and the gas holder absorbs the gas. When the pressure of the net is less than the weight of the piston, the piston descends, and the gas holder spits out the gas, so as to stabilize the pressure of the pipe network. [0003] With the development of gas cabinets to this day, there are only two types of gas cabinets that use thin lubricating oil as the sealing medium for sealing, namely Mann type ...

AI Technical Summary

Problems solved by technology

However, there is a disadvantage of the Mann type cabinet, which is that the life of the sealing device is short, and the leakage rate of the sealing oil is large, resulting in a large amount of oil loss.

Because the sealing of the Mann cabinet is squeezed by the metal slide plate and the side plate of the gas cabinet, the sealing effect is directly related to the fit between the side plate of the gas cabinet and the seal. The side plate of the gas cabinet will be affected by the gas pressure. When the gas pressure is too high , Theoretically speaking, the side plate of the gas cabinet tends to be round. In this way, the higher the pressure, the larger the gap between the side plate of the gas cabinet and the metal slide plate, and the greater the leakage of the sealing oil. Therefore, the previous Mann cabinet The pressure is generally less than 8kPa. Recently, there have been reports of 10kPa Mann cabinets in China. This kind of cabinet is said to be able to withstand this pressure, but the leakage is still large. Moreover, the side panels and other structures have been strengthened, which greatly increases the cost.

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