阅读说明：本技术 一种用于航空煤油的高精度过滤装置及方法 (High-precision filtering device and method for aviation kerosene ) 是由 张贤明 李文龙 龚海峰 周桂林 于 2019-04-15 设计创作，主要内容包括：本发明公开了一种用于航空煤油的高精度过滤装置,包括壳体、第一隔离网、第二隔离网、滤纸、进油口、出油口和顶端盖板；壳体和顶端盖板组成箱体；第一隔离网和第二隔离网设置于箱体内,第一隔离网和第二隔离网将箱体空间分为进油腔、过滤腔和出油腔；过滤腔内叠放数层滤纸,滤纸的两端分别固定于第一隔离网和第二隔离网两端上；所述滤纸之间相互平行。本发明提供的方法采用层间过滤方法,将滤纸叠放,让滤液平行于滤纸通过,利用滤纸之间的微小空隙实现杂质的过滤；此外,由于滤纸外表面粗糙,滤液通过时,大量杂质会吸附在滤纸纤维上,大大提高了过滤精度和纳污能力,能有效实现航空煤油丝状胶质的过滤净化处理。(The invention discloses a high-precision filtering device for aviation kerosene, which comprises a shell, a first isolation net, a second isolation net, filter paper, an oil inlet, an oil outlet and a top end cover plate, wherein the first isolation net is arranged on the shell; the shell and the top end cover plate form a box body; the first isolation net and the second isolation net are arranged in the box body, and the first isolation net and the second isolation net divide the box body into an oil inlet cavity, a filter cavity and an oil outlet cavity; stacking a plurality of layers of filter paper in the filter cavity, wherein two ends of the filter paper are respectively fixed on two ends of the first isolation net and the second isolation net; the filter papers are parallel to each other. The method provided by the invention adopts an interlayer filtering method, filter papers are stacked, filtrate passes through the filter papers in parallel, and the filtration of impurities is realized by utilizing tiny gaps among the filter papers; in addition, because the outer surface of the filter paper is rough, a large amount of impurities can be adsorbed on the fibers of the filter paper when the filter liquor passes through, the filtering precision and the pollutant carrying capacity are greatly improved, and the filtering and purifying treatment of aviation kerosene filamentous colloid can be effectively realized.)

1. A high accuracy filter equipment for aviation kerosene which characterized in that: the oil filter comprises a shell, a first isolation net, a second isolation net, filter paper, an oil inlet, an oil outlet and a top end cover plate;

the shell and the top end cover plate form a box body; the first isolation net and the second isolation net are arranged in the box body, and the first isolation net and the second isolation net divide the box body space into an oil inlet cavity, a filter cavity and an oil outlet cavity; a plurality of layers of filter paper are stacked in the filter cavity, and two ends of the filter paper are respectively fixed on two ends of the first isolation net and the second isolation net; the filter papers are parallel to each other.

2. A high precision filter assembly for aviation kerosene according to claim 1, wherein: gaps are arranged among the filter papers.

3. A high precision filter assembly for aviation kerosene according to claim 1, wherein: the filtrate passes through the filter paper parallel to the filter cavity and flows into the oil outlet cavity.

4. A high precision filter assembly for aviation kerosene according to claim 1, wherein: the filter paper is formed by stacking 800-1500 layers of plant fiber filter paper.

5. A high precision filter assembly for aviation kerosene according to claim 1, wherein: the filter paper is made of plant fiber filter paper subjected to raising treatment.

6. A high-precision filtering method for aviation kerosene according to any one of claims 1 to 5, wherein: the method comprises the following steps:

constructing a filtering system; the filtration system includes a filtration device;

starting a filtering system;

so that filtrate enters from an oil inlet of the filtering system;

causing the filtrate to flow through the filtration device in a direction parallel to the filtration device;

obtaining filtrate at an oil outlet of a filtering system;

detecting whether the filtered filtrate is qualified or not, and if not, enabling the filtrate to enter from an oil inlet of the filtering system again;

if the oil is qualified, the filtering operation is finished, and the oil inlet pump is closed.

7. The filtration method of claim 6, wherein: the filtering system comprises a plurality of filtering devices which are connected side by side, and oil inlets of the filtering devices are connected in parallel to form a main oil inlet; the oil outlets of the filtering devices are connected in parallel to form a total oil outlet.

8. The filtration method of claim 6, wherein: a plurality of layers of filter paper are stacked in a filter cavity in the filter device; gaps are arranged among the filter papers.

9. The filtration method of claim 6, wherein: the filtering device adopts an interlayer filtering principle to filter filtrate.

Technical Field

The invention relates to the technical field of filtering equipment, in particular to a high-precision filtering device and method for aviation kerosene.

Background

Aviation kerosene is one of the petroleum products and is composed mainly of various fractions of hydrocarbon compounds. The fuel has the advantages of high heat value, good combustion performance, less carbon deposition, good low-temperature fluidity and the like, and is widely used as the fuel of an aviation turbine engine. Aviation kerosene is one of the national important strategic materials, and plays a significant role in national defense safety and economic construction. However, the military academy of sciences found that when a carrier-based aircraft is tested for flight, the finished aviation kerosene can generate a lot of transparent filamentous colloids after being stored for a period of time, and the aviation kerosene can block an aircraft fuel supply pipeline possibly to cause serious accidents.

Therefore, the aviation kerosene must be subjected to filtration purification treatment before refueling. The traditional filtration mode is that filtrate vertically passes through a filter material, and tiny pores on the filter material are utilized to realize the filtration of impurities. At present, more advanced filtration is gradually dense filtration, as shown in fig. 1, namely, a filter screen is arranged from sparse to dense, impurities are separated layer by layer according to the pore diameter of the filter screen, the method can enable the filtration precision to reach 2 micrometers, but tests show that the method is difficult to achieve effective removal of sericin in aviation kerosene.

Disclosure of Invention

In view of the above, the present invention provides a high-precision filtering method for aviation kerosene, which employs interlayer filtering, i.e., stacking filter papers to allow the filter liquor to pass through in parallel with the filter papers, and filtering and adsorbing impurities by using micro gaps between the filter papers and the rough surface of the filter papers.

In order to achieve the purpose, the invention provides the following technical scheme:

the invention provides a high-precision filtering device for aviation kerosene, which comprises a shell, a first isolation net, a second isolation net, filter paper, an oil inlet, an oil outlet and a top end cover plate, wherein the shell is provided with a first isolation net and a second isolation net;

the shell and the top end cover plate form a box body; the first isolation net and the second isolation net are arranged in the box body, and the first isolation net and the second isolation net divide the box body space into an oil inlet cavity, a filter cavity and an oil outlet cavity; a plurality of layers of filter paper are stacked in the filter cavity, and two ends of the filter paper are respectively fixed on two ends of the first isolation net and the second isolation net; the filter papers are parallel to each other.

Further, a gap is arranged between the filter papers.

Further, the filtrate flows into the filter cavity from the oil inlet cavity, passes through the filter paper parallel to the filter cavity and flows into the oil outlet cavity.

Further, the filter paper is formed by stacking 800-1500 layers of plant fiber filter paper;

further, the filter paper is a raising-treated plant fiber filter paper.

The invention also provides a high-precision filtering method for aviation kerosene, which comprises the following steps:

constructing a filtering system; the filtration system includes a filtration device;

starting a filtering system;

so that filtrate enters from an oil inlet of the filtering system;

causing the filtrate to flow through the filtration device in a direction parallel to the filtration device;

obtaining filtrate at an oil outlet of a filtering system;

detecting whether the filtered filtrate is qualified or not, and if not, enabling the filtrate to enter from an oil inlet of the filtering system again;

if the oil is qualified, the filtering operation is finished, and the oil inlet pump is closed.

Furthermore, the filtering system comprises a plurality of filtering devices which are connected side by side, and oil inlets of the filtering devices are connected in parallel to form a main oil inlet; oil outlets of the filtering devices are connected in parallel to form a total oil outlet;

further, a plurality of layers of filter paper are stacked in a filter chamber in the filter device; gaps are arranged among the filter papers.

The invention has the beneficial effects that:

the high-precision filtering method for the aviation kerosene, which is provided by the invention, adopts interlayer filtering, stacks filter paper, allows filtrate to pass through the filter paper in parallel, and realizes the filtering of impurities by utilizing tiny gaps between the filter paper; in addition, because the outer surface of the filter paper is rough, a large amount of impurities can be adsorbed on the fibers of the filter paper when the filter liquor passes through, the filtering precision and the pollutant carrying capacity are greatly improved, and the filtering and purifying treatment of aviation kerosene filamentous colloid can be effectively realized.

Because the filtrate flows parallel to the surface of the filter paper and a plurality of layers of filter paper are stacked, compared with the traditional vertical filtering method, the filtering area is increased by 50-100 times, so that the filter material is not easy to block, and the service life of the filter material is greatly prolonged. Meanwhile, when the filtrate flows through the surface of the filter paper in parallel, impurities in the filtrate can be adsorbed by abundant holes and fibers in the filter paper, compared with the traditional vertical filtering method, the pollutant carrying capacity is improved by hundreds of times, and the filtering precision can reach 0.1 micrometer.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.

Drawings

In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:

FIG. 1 illustrates a conventional filtration process.

Fig. 2 is an interlayer filtering.

FIG. 3 is a schematic diagram of interlayer filtering.

Fig. 4 shows a filter device.

In the figure, 1 is a shell, 2 is a first isolation net, 3 is a second isolation net, 4 is a filter material, 5 is an oil inlet, 6 is an oil outlet, and 7 is a top cover plate.

Detailed Description

The present invention is further described with reference to the following drawings and specific examples so that those skilled in the art can better understand the present invention and can practice the present invention, but the examples are not intended to limit the present invention.

The embodiment provides a high-precision filtering method for aviation kerosene, which has the basic principle that: the filter paper is stacked in multiple layers, so that the filtrate passes through the filter paper in parallel, on one hand, impurities in the filtrate are filtered by utilizing a tiny gap between the filter paper, on the other hand, due to the rough surface of the filter paper, when the filtrate meanders to pass through the filter paper along the gap between the filter paper, the filtrate collides with the upper filter paper and the lower filter paper, and the impurities are adsorbed on the filter paper fibers.

As shown in fig. 4, the filtering apparatus provided in this embodiment includes a housing, a first isolation net, a second isolation net, a filter material, an oil inlet, an oil outlet, and a top end cover plate;

the shell and the top end cover plate form a box body;

the first isolation net and the second isolation net are arranged in the box body, and the first isolation net and the second isolation net divide the box body space into an oil inlet cavity, a filter cavity and an oil outlet cavity;

a plurality of layers of filter paper are stacked in the filter cavity, and two ends of the filter paper are respectively fixed on two ends of the first isolation net and the second isolation net; the filtrate flows into the filter cavity from the oil inlet cavity, passes through the filter paper parallel to the filter cavity and flows into the oil outlet cavity

The filter papers are mutually parallel;

the filtrate flows in from the oil inlet and converges in the oil inlet cavity, the filtrate flows in the filter cavity from the oil inlet cavity, parallelly passes through the parallel filter paper of the filter cavity and flows in the oil outlet cavity, and the filtrate flows out from the oil outlet in the oil outlet cavity.

The filter paper is formed by stacking 800-1500 layers of plant fiber filter paper;

the filter paper is made of plant fibers subjected to raising treatment, namely fine and soft fluff is generated on the surface of the filter paper by using the micro-tooth steel combs on two sides of the filter paper, so that the adsorption capacity of the filter paper can be remarkably improved, and the filtering precision is improved.

The filter device provided by the embodiment is used in the following way: the aviation kerosene to be treated is pumped into the filter device by the oil pump and enters the oil inlet cavity, oil flow meanders from gaps between the filter papers, filamentous colloid in the oil is trapped and adsorbed by the rough surface of the filter paper and fine fiber fluff, and the purified aviation kerosene flows into the oil outlet cavity and flows out from the outlet.

In the traditional vertical filtering method, the filtering area of the common plant fiber filter paper is only the size of the contact area of the oil flow vertical filter paper, and the filtering precision is only 5-20 mu m. The effective filtering area of the filter paper is increased by more than 50 times by using an interlayer filtering method, the rough surface raising treatment of the filter paper is utilized to ensure that the common filter paper has the adsorption capacity, the filtering precision can reach 0.1 mu m, and the filamentous colloid in the aviation kerosene can be effectively removed.

The height of the filter cavity provided by the embodiment is 240mm, 800-1500 layers of filter paper are stacked in the filter cavity, two ends of the filter paper are fixed by using an isolation net, and finally a top cover plate is covered to form the interlayer filter device.

The embodiment provides a high-precision filtering method for aviation kerosene, which comprises the following steps:

constructing a filtering system; the filtration system includes a filtration device; a plurality of layers of filter paper are stacked in a filter cavity in the filter device; fixing the position of the filter paper by using the first filter screen and the second filter screen; covering a top cover plate and sealing;

starting a filtering system;

so that filtrate enters from an oil inlet of the filtering system;

causing the filtrate to flow through the filtration device in a direction parallel to the filtration device;

obtaining filtrate at an oil outlet of a filtering system;

detecting whether the filtered filtrate is qualified or not, and if not, enabling the filtrate to enter from an oil inlet of the filtering system again;

if the oil is qualified, the filtering operation is finished, and the oil inlet pump is closed.

The filtering system comprises a plurality of filtering devices which are connected side by side, and oil inlets of the filtering devices are connected in parallel to form a main oil inlet; oil outlets of the filtering devices are connected in parallel to form a total oil outlet;

a plurality of layers of filter paper are stacked in a filter chamber in the filter device; gaps are arranged among the filter papers.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.