RU177096U1 - CONDITIONED-CLOSED SYSTEM OF FUEL CLEANING ON THE BASIS OF HYDROCYCLON APPARATUS - Google Patents

Abstract

The utility model relates to aircraft fuel supply technology. The essence of the utility model consists in the use of a closed two-stage system for cleaning fuel from emulsion water and mechanical impurities, consisting of a cylindrical conical countercurrent-hydrocyclone apparatus with a conical filter metal mesh responsible primarily for cleaning from mechanical impurities, and a cylindrical direct-flow hydrocyclone apparatus for purifying fuel from water, as well as pipelines, valves, an electric pump, a mesh cleaning system and a settling tank. The technical result of the utility model consists in increasing the quality of filtering and reducing the overall dimensions of the system, as well as in the absence of the need to clean the filter element.

Description

The utility model relates to aviation fuel supply, and in particular to aviation fuel cleaning systems.

A device for separating suspensions and emulsions, containing a cylindrical housing with a tangential inlet pipe, drain and sand pipes connected respectively to a drain and sand chambers, a filter element installed in a drain chamber with a pipe for draining clarified liquid, characterized in that in order to increase the efficiency of clarification of the suspension, it is equipped with an intermediate hydrocyclone with a tangential nozzle connected to the drain chamber, a needle backpressure valve, tained in a tangential nozzle and the filter element is provided with a pipe for supplying the washing liquid connected to a pressure regulator [1, AS USSR No. 1567284, cl. B04C 9/00, 1990]. The disadvantages of the existing system are: the complexity of the cleaning process of the filter element, during which the clarified suspension, together with washing water and mechanical impurities knocked out of the filter element, enters the auxiliary hydrocyclone for intermediate separation, and then returns back to the inlet of the main hydrocyclone; the condensed suspension from both hydrocyclones enters the sand chamber with the impossibility of subsequent separation of the remainder of the suspension (its amount depends on the hydrocyclone parameters).

The problem to which the claimed technical solution is directed is to improve the quality of filtering aviation fuel immediately before refueling it in an aircraft.

This task is achieved through the use of a two-stage fuel purification system consisting of a cylindrical conical countercurrent hydrocyclone apparatus, which is mainly responsible for cleaning from mechanical impurities, and a cylindrical once-through hydrocyclone apparatus for purifying fuel from water, as well as pipelines, valves, an electric pump, and a settling tank .

The technical result provided by the given set of features is to improve the quality of filtering aviation fuel from water and mechanical impurities remaining in the fuel after the first stage of centrifugal cleaning, while reducing the overall dimensions of the cleaning system and greatly simplifying the design of the system. Moreover, the proposed system does not have moving elements and bearings, which does not require the installation of seals and increases the reliability of the apparatus and the system as a whole. The main advantage of the proposed system is the absence of the need for a cleaning process of the filter element, due to its absence. Fuel is cleaned in the apparatus due to the action of the centrifugal force field. The necessary degree of purification is achieved through the use of a two-stage scheme.

The system device is illustrated in FIG. 1-4, which, in fact, shows a conditionally closed fuel purification system based on hydrocyclone devices and its elements.

Figure 1:

1 - cylindrical countercurrent-hydrocyclone apparatus;

2 - pipe outlet cleaned product;

3 - pipe outlet condensed product (contamination);

4 - cylindrical once-through hydrocyclone apparatus;

5 - pipe outlet of the condensed product (contamination) from the cylinder-conical hydrocyclone;

6 - sedimentation tank for collecting pollution;

7 - electric pump;

8 - branch pipe for cleaning into a cylinder-conical hydrocyclone;

9 - pipe outlet condensed product (contamination) from the cylinder-conical hydrocyclone;

10 - pipe outlet fully purified product.

Figure 2:

11. - disk-shaped devices for damping the medium flow at the inlet to the sump tank.

Figure 3:

1 - cylinder-countercurrent hydrocyclone apparatus.

Figure 4:

4 - cylindrical once-through hydrocyclone apparatus.

Sources of information used:

1. USSR author's certificate No. 1567284, cl. B04C 9/00, 1990.

Claims (1)

Hydrocyclone for fuel cleaning, including a cylindrical countercurrent hydrocyclone apparatus, a branch pipe of the purified product after cleaning in a cylindrical hydrocyclone, a branch pipe for condensed product removal - pollution from a cylindrical hydrocyclone, a cylindrical once-through hydrocyclone apparatus, a branch pipe for condensed product discharge - pollution from a cylinder conical hydrocyclone for collecting tank, pollution and its separation from part of the clean product allotted with it, an electric pump for pure product water from the settling tank to the inlet of the cleaning system, a branch pipe for cleaning to a cylindrical hydrocyclone, a branch pipe for condensed product removal - pollution from a cylinder conical hydrocyclone, plate-shaped devices for damping the medium flow at the inlet to the settling tank.

Images