| Title of Invention | "A WATER SEPARATOR FOR USE IN A BOWSER FOR FILTRATION OF AVIATION FUEL" |
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| Abstract | A water separator for use in a bowser for filtration of aviation fuel comprising: a centre tube (4); a perforated tube (5) spaced from said tube (4) characterized by; a stainless steel mesh (6) wrapped around and sealed to said outer tube (5); a protection retainer (7) for said mesh (6), and end caps (3). |
| Full Text | FIELD OF INVENTION; This invention relates to a water separator for use in a bowser for filtration of aviation fuel. In particular, this invention relates to a water separator for use in a bowser for supply of aviation fuel to an aircraft from a land refueling vehicle. BACKGROUND OF THE INVENTION; Bowsers are known in the art for supply of aviation fuel from a land refuelling equipment to an aircraft. It is known and recognized in the art that aviation fuel supplied to an aircraft should not contain solid contaminants and water. For this purpose, a bowser is provided in the land refuelling vehicle and comprises a chamber having an inlet for the fuel to be filtered and an outlet for discharge of the filtered fuel to the aircraft. Aviation fuel first enters the coalescer members disposed within the browser and in an in to out flow direction so as to cause a removal of solid contaminants and allow a coalescing of water contained in the fuel. The water droplets from the coalescer elements collect at the bottom of the chamber and then are drained through an outlet. However, any residual water collected at the bottom of the chamber flows with the fuel to the separator elements provided in the browser. The flow of fuel is from out to in such separator elements so as to prevent the flow of any residual water. Yet another object of this invention is to propose a water separator for use in bowder for filtration of aviation fuel, which does not require a constant replacement. A further object of this invention is to propose a water separator for use in a bowser for filtration of aviation fuel, which allows a coalescing of water. A still further object of this invention is to propose a water separator for use in a bowser for filtration of aviation fuel, which does not require a constant replacement. BRIEF DESCRIPTION OF INVENTION According to this invention there is provided a water separator for use in a bowser for filtration of aviation fuel comprising: - a) a centre tube (4); b) a perforated tube (5) spaced from said tube (4) characterized by; c) a stainless steel mesh (6) wrapped around and sealed to said outer tube (5); d) a protection retainer (7) for said mesh (6), and e) end caps (3). DESCRIPTION WITH REFERENCE TO DRAWINGS Further objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawing and wherein. Fig. 1 shows a sectional view of the water separator of the present invention. Referring to fig.l, the separator of the present invention comprises an inner or center perforated tube 4 made of, for example, stainless steel and having spaced pores of 2 to 2.5 mm diameter. Tube 4 is provided on the clean side with respect to flow of fuel. The purpose of tube (4) is to provide strength and to compensate for the tightening torque. The pores in tube (4) essentially form a flow path for fuel. The separator further comprises a perforated tube or outer retainer (5). Outer retainer (5) is spaced from center tube (4) and has spaced pores of 3 to 4.5 mm diameter. A stainless steel mesh (6) is wound around retainer (5), said mesh having a coating thereon. Reference is made in particular to the coating provided on mesh (6). Once a droplet of water contacts a surface, it establishes a contact angle. In the known construction, the material consisted of paper and the contact angle was as low as 60°. The lower the contact angle, the greater are the possibilities of water entering the material. In the present invention, the provision of the coating increases the contact angle to upto 125°. Thus, in the instance where the coating is Teflon, the contact angle is between 100 to 125°C. In the instance, where the coating is polyethylene, the contact angle is 100 to 110°. Yet another property imparted by the coating is that of surface energy. It is known that when liquid molecules have strong attraction towards solid molecules (Adhesive force is stronger than cohesive force) it has high surface energy and wets the surface, when liquid molecules have strong attraction towards each other (liquid molecules) co-hesive forces is strong and it has low surface energy and do not wet the surface. In the instance of pleated paper of the known art, the surface energy was 50 to 60. In distinction, the teflon coating provides a surface energy as low as 15 to 20 and polyethylene as 30 to 35. A protection retainer (7) is provided to prevent the coating provided on the mesh by rubbing and handling during fitment and usage having spaced pores is provided in a spaced relationship to mesh (6). The pores in retainer (7) have a diameter of 6 to 8 mm. The separator has end caps 3 with a sealing gasket adhered thereto with a sealant 2. Preferably, sealing gasket 1 is vulcanized onto cap 3. WE CLAIM; 1. A water separator for use in a bowser for filtration of aviation fuel comprising:- a) a centre tube (4); b) a perforated tube (5) spaced from said tube (4) characterized by; c) a stainless steel mesh (6) wrapped around and sealed to said outer tube (5); d) a protection retainer (7) for said mesh (6), and e) end caps (3). 2. A water separator as claimed in claim 1, wherein said mesh (6) has a coating to provide a contact angle of 100 to 125°C with water droplets. 3. A water separator as claimed in claim 2, wherein the contact angle is 100 to 110°C and the coating is of polyethylene. 4. A water separator as claimed in claim 2, wherein the coating is of teflon. 5. A water separator as claimed in claim 1, wherein the coating provides a surface enrgy of 15 to 20 joule. 6. A water separator as claimed in claim 1, wherein said tube (4) has spaced holes with a diameter of 2 to 2.5 mm. 7. A water separator as claimed in claim 1, wherein said outer perforated tube has spaced holes with a diameter of 3 to 4.5 mm. |
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1415-DEL-2004-Abstract-(27-01-2011).pdf
1415-DEL-2004-Abstract-(29-03-2012).pdf
1415-DEL-2004-Claims-(27-01-2011).pdf
1415-DEL-2004-Claims-(29-03-2012).pdf
1415-DEL-2004-Correspondence Others-(29-03-2012).pdf
1415-DEL-2004-Correspondence Others-(29-11-2011).pdf
1415-DEL-2004-Correspondence-Others (03-02-2010).pdf
1415-DEL-2004-Correspondence-Others-(11-01-2011).pdf
1415-DEL-2004-Correspondence-Others-(27-01-2011).pdf
1415-del-2004-correspondence-others.pdf
1415-del-2004-correspondence-po.pdf
1415-DEL-2004-Description (Complete)-(27-01-2011).pdf
1415-DEL-2004-Description (Complete)-(29-03-2012).pdf
1415-del-2004-description (complete).pdf
1415-DEL-2004-Form-1-(27-01-2011).pdf
1415-DEL-2004-Form-2-(27-01-2011).pdf
1415-DEL-2004-Form-2-(29-03-2012).pdf
1415-DEL-2004-GPA-(27-01-2011).pdf
1415-DEL-2004-GPA-(29-03-2012).pdf
| Patent Number | 251972 | ||||||||
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| Indian Patent Application Number | 1415/DEL/2004 | ||||||||
| PG Journal Number | 17/2012 | ||||||||
| Publication Date | 27-Apr-2012 | ||||||||
| Grant Date | 19-Apr-2012 | ||||||||
| Date of Filing | 30-Jul-2004 | ||||||||
| Name of Patentee | Mahle Filter Systems (India) Limited | ||||||||
| Applicant Address | 38th. MILESTONE, NATIONAL HIGHWAY NO. 8, BEHRAMPUR ROAD, KHANDSA, GURGAON-122001, INDIA. | ||||||||
Inventors:
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| PCT International Classification Number | B01D 19/00 | ||||||||
| PCT International Application Number | N/A | ||||||||
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