SU974614A1 - Liquid filtering device - Google Patents

Description

The invention relates to a technique for protection against harmful manifestations of static electricity and can be used in the manufacture of filters for cleaning dielectric liquids (for example, hydrocarbon fuels) from soils in the chemical and petroleum industries. A device is known for reducing the level of static electricity charges in dielectric fluids in the process of pumping and filtering containing its relaxation chambers for extinguishing electrostatic charges in fuel. The disadvantage of this device is the large size, high cost, the impossibility of installation in a number of technological lines. The closest to the proposed is a device for filtering liquids, comprising a housing with inlet and outlet cavities and a partition dividing said cavities, filter packages installed on the partition with channels for passing the bone through the filter packages and filter elements covering these channels 2. In this device, charge removal is achieved by relaxing them in the exit cavity, as well as by removing them from the filter package, even if the degree of electrification of the liquid is high enough due to the high fluid velocity of motion pa exiting the filter package. The purpose of the invention is to reduce the degree of electrification when filtering dielectric liquids by reducing the velocity of the liquid at the outlet of the filter packs. This goal is achieved by the fact that in a device for filtering liquids, a housing with an inlet and outlet cavities and a partition dividing said cavities, optical packages installed on the partition with channels for passing the liquid through the filter packages and filtering elements covering these channels indicates 1 the outlet cavity, and the said channels are connected to the input cavity.

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The drawing shows a device diagram, an embodiment.

The device consists of an inlet pipe 1, through which fluid enters the inlet cavity 2, partitions 3, conductive gaskets 4, filter bags 5 installed in the outlet cavity 6, the housing 7, the cover 8, the outlet 9, supports 10.

The device works as follows. When pumping, the liquid enters through the inlet pipe 1 into the lower inlet cavity 2 limited by a horizontal partition 3, on which filter packs are installed through sealing gaskets 4. The fluid from the inlet cavity 2 passes through the flux separation walls of the filter packages 5, is cleaned and acquires a certain sign of an electrostatic charge; pipe 9. At a low flow rate in the outlet cavity 6, electrostatic charges from the liquid are neutralized both on the filter packages 5 and on the walls of the housing 7 and the lid 8, which combine with filter elements conducting conductive pads 4. The remainder of the electrostatic charge is removed from the device through the grounding supports 10.

The present invention allows reducing the amount of static electricity charge exiting the device by 44-90%, increasing the fire safety of technological processes of pumping and charging equipment, and increasing the throughput of filters by 1.2-1.5 times.

Thus, the flow rate of fuel electrified in filter elements is reduced as compared with the known device when pumping with a supply of 700, 1000, 1200, 1500 l / min, respectively, from 2.655-5.681 m / s to 1.53, 2 m / s, and (magnification current) of the remaining HP neutralized on the housing from the filter elements of static electricity charges in these cases decreased, respectively, from 2.3 .. 5.9 mA to 1.0 ... 3.6 mA, i.e. by 39-64.3%.

Thus, the implementation of the invention allows to significantly reduce the degree of electrification when filtering dielectric liquids.

Claims (2)

1. Rybakov K. V. and others. The fight against the electrification of fuels during pumping and filtration. Moscow, TsNIITEneftekhim, 1970, p 24-25. 2. Rybakov K. V. and others. Refueling aircraft fuel and lubricants. M., Transport, 1975, with 63 (prototype). - muffled frffoen