RU39502U1 - FILTER SEPARATOR ELEMENT FOR CLEANING FUEL - Google Patents

Abstract

The utility model relates to devices for cleaning fuels (hydrocarbon for jet engines, aviation and automobile gasolines, diesel fuels, etc.) from mechanical impurities and free water and can be used in the aviation oil refining, automotive industry and in the oil product supply system. The technical result is an increase in the quality of fuel cleaning with a simultaneous increase in the flow rate of fuel passing through the filter element. The specified technical result is achieved by the fact that the filter layer is made of two layers of corrugated paper with a decrease in pore size in the fuel flow, the first coagulating layer is made of fiberglass mat with a fiber diameter of 1.5-2.0 μm and compressed with a fiberglass mesh with a mesh size of 1, 6 × 2.5 mm × mm, the second coagulating layer is made of Rudfil needle-punched material with a surface density of 270-285 g / m ² and the cotton tube is stretched onto the cylindrical surface of the second coagulating layer with a force providing an increase in its cells to 1.2-1.5 from the original, while the water-repellent layer is made in the form of a metal mesh with a mesh size of 70 × 70 mm × mm, covered with a fluoroplastic emulsion, and placed with a clearance sufficient for the droplets to settle on the coagulating layer . The use of the utility model will reduce the contamination of the target product by more than 50 times with a filter fineness of 5.0 microns.

Description

The invention relates to a device for the purification of fuels (fuels for jet engines, aviation and automobile gasolines, diesel fuels, etc.) from mechanical impurities and free water and can be used in the aviation, oil refining, automotive industries and in the oil product supply system.

Known filter-water separating elements (cartridges), consisting of filtering and water separating layers, used both in single-stage filter separators (US patent No. 4372847, B 01 D 27/08 1982), in two-stage filter separators (RF P No. 2185222, B 01 D 25/00, 2002), and in three-stage filter separators (K. Rybakov and others. Dehydration of aviation fuels and lubricants. - M., Transport, 1979, p. 159).

In these elements, at least three partitions made of hydrophobic materials in combination with coarse cotton “stocking” which are located along the fuel flow are used as a coagulating medium.

A disadvantage of the known technical solutions is the completeness of separation of free water from fuel that does not meet modern requirements with an increase in the consumption of hydrocarbon fuels through filter-coagulating elements (FCE), as a result of which the processes of increasing drops of free water on the fibers of the coagulating layer are significantly worsened and their premature detachment occurs, in As a result, water droplets are carried away by the fuel stream into clean fuel and do not have time to settle under the influence of gravity.

The closest technical solution to the proposed utility model and taken as a prototype is a PCE containing a filtering, coagulating layers, a layer for further enlargement of water drops in the form of a cotton "stocking" and a water-repellent layer (US Patent No. 3061107, cl 210-487, publ , 1962).

The relatively low throughput (cleaning speed) is a drawback of this element, since with increasing speed the quality of fuel cleaning decreases, because drops of water break off the outer surface of the coagulating layer with a fuel stream.

The technical result is an increase in the quality of purification of hydrocarbon fuels from mechanical impurities and free water with a simultaneous increase in the flow rate of fuel passing through the FCE.

The specified technical result is achieved by the fact that in the known element of the separator filters for cleaning hydrocarbon fuels, containing filtering, first and second coagulating layers located on the stream of cleaned fuel, a layer for enlarging free water droplets in the form of a cotton tube and a water-repellent layer, according to the proposed utility model the filter layer is made of two layers of corrugated paper with a decrease in pore size in the fuel flow, the first coagulating layer is made of fiberglass mat with a fiber diameter of 1.5-2.0 μm and compressed with a fiberglass mesh with a mesh size of 1.6x2.5 mm km m, the second coagulating layer is made of Rudfil needle-punched material with a surface density of 270-285 g / m ² , and a cotton tube stretched on the cylindrical surface of the second coagulating layer with an effort to increase its mesh size to 1.2-1.5 from the original, while the water-repellent layer is made in the form of a metal mesh with a mesh size of 70x70 mm km covered with a fluoroplastic emulsion, and placed with sufficient for settling to free water pel gap relative to the coagulating layer.

Figure 1 presents the element of the filter separators for cleaning fuels.

The element is a perforated housing. A perforated tube is installed inside the casing, into which contaminated fuel enters. Two layers of corrugated filter paper 1, 2, a metal perforated cylinder 3, are placed on the perforated tube in a radial direction in the downstream direction. a first coagulating layer 4, compressed by a fiberglass mesh 5, on which a second coagulating layer 6 is placed. A cotton tube is pulled onto the second coagulating layer 6

7 (increasing the size of free water droplets), relative to which a water-repellent layer 8 is installed with an annular gap 9.

Lids 11 are hermetically fixed to the element from below and from above. For drainage from coagulated water in the lower cover 11, holes 10 are located along the radius of the cotton tube 7 and the water-repellent layer 8.

As a filtering layer (1.2 - according to the fuel flow), Hollingworth papers are used - 424 VH 204 and 882/2 VH 206 (prospectus of Hollingworth firm, 2003).

The pore size of the first layer 1 of paper 424 VH 206 is: a maximum of 40 microns, and a minimum of 30 microns; of the second layer 2 of paper 882/2 VH 206: the maximum pore size is 22 μm and the minimum is 17 μm, the paper is corrugated in the longitudinal direction, the height of the corrugations is 15 mm, and the distance between the corrugation vertices is 3 mm.

Behind the filter papers for rigidity, a metal perforated cylinder 3 is installed, which is wrapped with the first coagulating layer 4, which is a 40 mm thick fiberglass mat and a fiber diameter of 1.5-2.0 μm (TU 5952-018-00204990-02) and crimped it with fiberglass mesh 5 brand SSB (TU 2296-006-00204961-01). As a result of compression, the thickness of the mat 4 is reduced to 4.0-4.5 mm

A second coagulating layer 6 is put on the fiberglass mesh 5, which is a pre-sewn cylinder of needle-punched filter cloth for the Rudfil mining industry (TU 8397-201-00302327-99) with a thickness of 5.0 mm and a surface density of 270-285 g / m ² .

A cotton knit tube 7 (VTU 46.00.00) is pulled onto the second coagulating layer b with a force that provides an increase in the size of its cells to 1.2-1.5 mm from the original, which allows you to increase the size of the drops of free water, as a result, more rapid precipitation.

The water-repellent layer 8 is a metal mesh with a mesh size of 70x70) <) μm} 1 coated with F-4D fluoropolymer emulsion (TU 6-05-12461-81), 10 μm thick (for which the mesh is dipped in a fluoropolymer emulsion and then dried at a temperature of 140 ° C).

Thus, the use of needle-punched filter separators in an element

Rudfil material with a surface density of 270-285 g / m ² as a coagulating layer, a metal mesh with a mesh size of 70x70 mm km m, covered with F-4 D fluoroplastic emulsion in combination with known materials can reliably clean fuel from free water, simplifies element assembly process, as Rudfil is easier to crimp to the required thickness. In addition, it is easier (due to the fact that the Rudfil material is pre-stitched in the form of a cylinder), the operation of tensioning the cotton tube with reinforcement, providing an increase in the size of its cells by 20-50% of the original.

The element of the filter separators works as follows.

Pre-contaminated and flooded fuel enters the element, passes through layers 1, 2 of corrugated filter paper and perforated cylinder 3, where it is cleaned of mechanical impurities. Further, the fuel flows through the coagulating layers 4, 6 and the cotton tube 7, in which there is an increase in the size of drops of free water, as a result of which, under the influence of their own weight, overcoming the flow rate of the fuel, they are lowered down and through the hole 10 in the lower cover 11 are removed from the element .

Smaller droplets, which did not have time to settle, fall onto the water-repellent layer 8, which has hydrophobic properties due to the deposition of a fluoroplastic emulsion layer and, as it grows, breaks off it and also settles down and is removed from the element.

Tests were carried out on the proposed design of the element. The tests were carried out when cleaning jet fuels TS-1 and RT (GOST 10227-86 "Fuel for jet engines. Technical conditions") and T6, T8 V (GOST 12308-89 "Fuel thermostable T6 and T8 V for jet engines. Technical conditions" ), artificially polluted and watered. Presented for testing samples of elements are presented in table 1.

For comparison, tests of the most widely used serial element used in filter separators were conducted in parallel.

The element consists of a filter layer, a coagulating layer for coarsening drops

water made of polyurethane foam, squeezed in height by a perforated frame (a.s. USSR No. 912201 V 01 D 17/02).

The test results are presented in table 2.

Table 1
The composition of the samples of the sample element of the separator filters for fuel cleaning The composition of the element (pos. In the diagram) Item Samples Number 1 Number 2 No. 3 Number 4 Number 5 Number 6 1 2 3 4 5 6 7 Filter layer: paper 424 VH 206 (item 1) pore size, microns:
maximum
minimum
Paper 882/2 VH 206 (item 2) pore size, microns:
Maximum
minimum 40
thirty
22
17 40
thirty
22
17 40
thirty
22
17 40
thirty
22
17 40
thirty
22
17 40
thirty
22
17 Perforated metal cylinder (item 3) with a hole diameter of 10 mm + + + + + + The first coagulating layer (item 4): a mat of fiberglass with a diameter of 1.5-2 microns thickness, mm:
before crimping
after crimping 40
6.0 40
5,0 40
4.0 40
4,5 40
4.0 40
3,5 Fiberglass mesh (item 5), mesh size, 1.6x2.5 mmx mm + + + + + + The second coagulating layer (item 6): cloth "Rudfil" surface density, g / m ² 265 270 275 280 285 288 Layer for coarsening drops of free water (item 7):
Cotton tube, cell diameter, mm:
source
after tightness 0.3
0.33 0.3
0.36 0.3
0.39 0.3
0.42 0.3
0.45 0.3
0.48 Water-repellent layer (item 8): metal mesh coated with fluoroplastic emulsion F-4D with a cell size of 70x70 mmxmm + + + + + + Element diameter, mm
Interior
external 70,149 70,149 70,149 70,149 70,149 70,149 The gap between the cotton tube and the water-repellent layer, mm 2 4 6 7 8 9

table 2
Element test results for cleaning contaminated and flooded jet fuels * No. p.p. Fuel cleaning performance Item Samples Number 1 Number 2 No. 3 Number 4 Number 5 Number 6 AC No. 912201 V 01 V 17/02 1 Filter fineness, microns 6.0 5,0 5,0 5,0 5,0 5,0 5,0 2 Fuel pollution, mg / kg 1,0 1,0 1,0 0.9 0.8 0.9 1,0 3 The content of free water in the fuel,% mass. 0.003 0.0015 0.0015 0.0010 0.0010 0.0025 0.0025 4 Throughput (pumping speed), l / min 75.0 75.0 75.0 75.0 75.0 75.0 65.0 * Quartz dust with a specific surface of 10,500 cm ² / g was used as a pollutant (GOST 8002-80 “Internal combustion engines, air cleaners, bench test methods”, initial pollution, 50.0 mg / kg, water cut (free water content) 0.05 % of the mass.

As tests have shown, the claimed design of the cartridge allows you to reduce contamination in the final product by more than fifty times with a filter fineness of 5.0 microns and reduce the free water content in the final product due to rationally selected filter materials, optimal compression of mat 4 from fiberglass, and selection of material Tudfil "6 with the appropriate density, creating the optimal cell of the cotton tube 7 after it is tightened onto the second coagulating layer 6, needle-punching fiber" Rudfil ", creating the optimal size 9 cotton-being between tube 7 and 8 and the water-repellent layer using a water-repellent layer 8 of the metal mesh with the size 70h704mh cells; myapokrytoy emulsion formation fluoro-4-F D.

Claims (1)

A filter-separator element for cleaning hydrocarbon fuels, comprising filtering layers, first and second coagulating layers, a layer for enlarging free water droplets in the form of a cotton tube, and a water-repellent layer, characterized in that the filter layer is made of two layers of corrugated paper with by decreasing the pore size in the fuel flow, the first coagulating layer is made of fiberglass mat with a fiber diameter of 1.5-2.0 μm and compressed with a fiberglass mesh with a mesh size of 1.6 × 2.5 m, the second coagulating layer is made of needle punched material "Rudfil" surface density 270-285 g / m ^2, and the cotton tube stretched onto the cylindrical surface of the element with a force that provides an increase in the size of its cells to 1.2-1.5 by the source, the water-repellent layer is made in the form of a metal mesh with a cell size of 70 × 70 μm, covered with a fluoroplastic emulsion, and placed with a clearance sufficient for the dropping of free water relative to the coagulating layer.