Title of Invention

TRANSFORMER CONSERVATOR ISOLATION VALVE (TCIV)

Abstract

A Transformer Conservator lsolation Valve (TCIV) comprising of an inlet conduit or pipe (2), and outlet conduit or pipe (5) connected to a rectangular housing (7) with an operating device (10) fixed on a shall (19) placed inside the rectangular housing (7) and lever (9) for locking of the operating device (10); the said operating device (10) is provided with a sealing gasket (20) fitted such that during flow of oil due to rupture of electrical transformer tank or bursting of electrical transformer bushing or draining of oil, it swings towards the outlet conduit or pipe (5) so as to restrict flow of oil from the electrical transformer conservator (1) to the electrical transformer tank (4); a handle (8) is provided with the operating device (10) outside the rectangular housing (7) which turns in anti-clockwise direction during filtration or filling or refilling of oil so mat operating device (10) does not restrict flow of oil from the electrical transformer conservator (1) during filtration or filling or refilling of oil; two locking plates (13 and 14) provided outside the rectangular housing for padlocking during normal oil flow and during filtration or filling or refilling of oil.

Full Text

FORM 2 THE PATENTS ACT, 1970 (39 OF 1970) & PATENT RULES, 2003 PROVISIONAL/COMPLETE SPECIFICATION (See section 10 and rule 13) 1. TITLE or THE INVESTION : TRANSFORMER CONSERVATOR ISOLATION (TCIV) VALVE 2. APPLICANT(S) (a) Name: CTR Manufacturing Industries Ltd (b) Nationality: Indian Company (c) Address: Nagar Road, POONA 411014, MAHARASHTRA, INDIA 3. PREAMABLE TO THE DESCRIPTION The following specification particularly describes the and the manner in which it is to be performed. invention GRANTED 16-1-2006 16 JAN 2006 ORIGINAL TRANSFORMER CONSERVATOR ISOLATION VALVE (TCIV) Field of invention: The present invention relates to the field of an isolation valve, more particularly to electrical transformer Conservator Isolation Valve (TCIV) which is used between the conservator and buchholz relay in an electrical transformer for the purpose of isolating oil in the electrical transfoimer conservator mounted on top of the electrical transformer tank, in case of rupture of the electrical transformer tank or bursting of electrical transformer bushing. Background/Prior art: When the oil of an electrical transformer becomes contaminated or properties of the oil deteriorate, there is a need to filter the oil. Since the oil is always filtered from the bottom of the electrical transformer and fed again into to the conservator or top filter valve of the electrical transformer tank, oil circulation is blocked whenever filtered oil is fed into the conservator, whose outlet conduit or pipe is fitted with a conventional design preset non return valve. Therefore filtration of oil cannot be done. In the existing or conventional design of preset non return valve (PNRV), isolation of the electrical transformer conservator occurs in case of bursting of electrical transformer tank or rupture of electrical transformer bushing mounted on the electrical transformer tank. However, diving filtration or filling or refilling of electrical transformer oil, the FNRV by virtue of its inherent construction remains closed and prevents flow of oil. It is therefore necessary to obviate the above drawback of the prior art system by another device. Object of Investion: The objective of the present invention is to eliminate die above-said drawbacks associated with prior valves. The main objective of this invention is to provide a TCTV to be operated in dual mode for isolating the electrical transfonner conservator during abnormal flow of oil due to rupture of electrical transformer tank or nursling OT electrical transformer bushing or while draining oll from the electrical transformer tank and also not to isolate the electrical transformer conservator during normal flow of oil during filtration or filling or refilling. Summary of Invention The disadvantages associated win the prior art are overcome by designing the Transformer Conservator Isolation Valve (TCTV) which is operated in dual mode for isolating the electrical transformer conservator during abnormal flow of oil due to rupture of electrical transformer tank or bursting of electrical transformer bushing or while draining oil from the electrical transformer tank and also not to isolate the electrical trasformer conservator during normal flow of oil during filtration or filling or refilling. Statement of Invention Accordingly the present invention relates to a Transformer Conservator Isolation Valve (TCTV) comprising of an inlet conduit or pipe (2), outlet conduit or pipe (5) connected to a rectangular housing (7) with an operating device (10) fixed on a shaft (19) placed inside the rectangular housing (7) and lever (9) for locking of the operating device (10); the said operating device (10) is provided with a sealing gasket (20) fitted such that during flow of oil due to rupture of electrical transformer tank or bursting of electrical transformer bushing or draining of oil swings towards the outlet condilt or plpe (5) so as to restrict flow of oil from the electrical transformer conservator (1) to the electrical transformer tank (4), during filtration or fitting or refilling, a handle (8) ii provided win the operating device (10) outside the rectangular homing (7) which turns anti-clockwise during operation, the operating device (10) does not restrict flow of oil iron the electrical transformer conservator (1) during filtration or filling or refilling, two locking plates (13 and 14) provided outside the rectangular housing. Brief description of drawings Fig lA shows the position of operating device during normal oil flow. Fig.1B snows the position of operating device during abnormal oil flow. Fig. 1C shows the position of operating device daring filtration or filling or refilling Fig. 2A snows the device position in die normal oil flow situation Fig. 2B shows the device position in the filtration/filling situation Reference numerals used in figure are as follow: 1. Electrical Transformer conservator 2. Inlet conduit or pipe 3. Transformer Conservator Isolation Valve (TCIV) 4. Electrical transformer tank 5. Outlet conduit or pipe 6. Terminal box 7. Rectangular housing 8. Handle 9. Lever 10. Operating device 11. Glass window 12. Position of locking plate of operating device during normal oil flow. 13. Locking plate on handle (8) for padlocking during filtration or filling or refilling 14. Locking plate on handle (8) for padlocking daring normal oil flow 15. Air release screw 16. Position of locking plate of operating device during filtration or filling or refilling 17. Switching device 18. Drain plug 19. Shaft 20. Gasket 21. One plate Detailed Description of the Invention Accordingly, the present invention relates to a Transformer Conservator Isolation Valve (TCTV) comprising of an inlet conduit or pipe (2), outlet conduit or pipe (5) connected to a rectangular housing (7) with an operating device (10) fixed on a shaft (19) placed inside the rectangular housing (7) aad lever (9) for locking of the operating device (10); the said operating device (10) is provided with a sealing gasket (20) fitted such that daring flow of oil due to rupture of electrical transformer tank or bursting of electrical transformer bushing or draining of oil swings towards the outlet conduit or pipe (5) so as to restrict flow of oil from the electrical transformer conservator (1) to the electrical transformer tank (4), during filtration or filling or refilling, a handle (8) is provided with the operating device (10) outside file rectangular housing (7) which turns anti-clockwise during operation, the operating device (10) docs not restrict flow of oil from flic electrical transformer conservator (1) during filtration or filling or refilling, two locking plates (13 and 14) provided outside the rectangular housing. Tn one embodiment of the present invention wherein the said operating device being monitored by switching device (17) connected to terminal box (6). la yet another embodiment of the present invention wherein the rectangular housing comprising air release screw (15) for releasing the trapped air isside the TCIV (3) In still another embodiment of the present invention wherein the locking plates (13 and 14) are provided won a handle (8) used for padlocking during normal oil flow and daring filtration or filling or refilling. In another embodiment of the present invention wherein the said the electrical trans former incorporating the said conservator isolation valve. The TCIV comprises of a rectangular housing with an inlet or outlet air release screw and drain plug, an operating device placed inside the housing and locking plntefl fitted with a handle, for locking the operating device. One shaft is provided in the middle of the howing fitted with one plate. When the lever is manually turned clockwise and set, the operating device inside the bowing swiags towards the cutlet so a to oil from the electrical transformer conservator in the direction of the electrical transformer tank as required in an abnormal situation due to rupture of the electrical transformer tank or bursting of electrical transformer bushing or while draining oil from the electrical transformer tank. When the lever is manually turned anti-clockwise and set, the operating device inside swings towards me inlet so as to allow free flow of oil from the transformer conservator in the direction of the transformer tank as required daring filtration or filling or refilling. The TCIV operates as a non return valve so long as there is abnormal flow of oil, and operates as a conduit or pipe during normal flow of oil In case of sudden flow of oil considered as an abnormal flow, the valve mechanism inside moves clockwise and shuts off any passage of oil through the valve. By a novel invention of TCIV now invented, it can operate in a dual position by means of a lever, either to remain open or not to remain open, thereby allowing oil in the electrical transformer conservator to flow through the TCIV to the outlet conduit or pipe connected to the trasformer tank so that oil filtration orfilling is possible when the lever of the TCIV is tarmed anticlockwise to the littering position, an operating device provided iaeide the TCIV goto engaged ao that further movement of the TCIV is restricted and therefore oil can flow canity during fiaration or filliag or refilling. Therefore, the TCIV is working in a daa! made i.e. ia one case for isolatiag the electrical transformer coaservator in case of abnormal flow of oil from the electrical transformer coaaervator to electrical transformer tank and in the second cage daring filtration or filling or refilling where it allows free flow of oil. Referring to figure 1 and 2, the rectangular housing (7) with terminal box (6) and air release screw (15) are novated on the top with drain ping (18) at the bottom. One shall (19) is provided in the middle of the housing (7) fitted with one plate (21) and two locking plates (13 and 14), are provided with a handle (8). The handle ia need to take the locking plates to correct position for padlocking. The operating device externally homes the switching device (17) connected to terminal box (6) and inlet conduit or pipe (2) and outlet conduit or pipe (5) are connected to rectangular housing (7). The TCIV operates in a deal mode, which is selected by handle of operating device (8) provided outside the rectangular housing (7). An operating device (10) is provided inside the rectangular housing (7). During movement of the operating device under the abnormal conditions of filling, refilling / filtration, the operating device (10) has a sealing gasket (20) which under abnormal conditions isolates the flow of oil. it works like apenduluai to block the passage of inlet conduit or pipe (2) during filtration or refilling, abaonnul flow of oil and allows normal flow of oil from transformer conservator (1) in the direction of the electrical transformer task (4) and during filtration or filliag or refilling, the handle (8) of operating device (10) is turned in anticlockwise direction. The movement of the operating device (10) fitted inside the rectangular housing (7) is restricted by a lever (9) hi a fixed position thereby allowing free flow of electrical transformer oil through the outlet conduit orpine (5) during filtration or filing or refitting. The petition of the operating device (10) can be inspected through a glass window (11) provided in the rectangular touting (7). Advantages of the invention The main advantage of the present invention is to provide aTCIV to be operated in dual mode for isolating the electrical transformer conservator duruig abnormal flow of oil due to rupture of electrical transformer tank or bursting of electrical transfonner bushing or white dratmng oil from the electrical transformer tank and also not to isolate the electrical transformer conservator daring normal flow of oil during filtration or filling or refilling. We Claim: 1. A Transformer Conservator lsolation Valve (TCIV) comprising of an inlet conduit or pipe (2), and outlet conduit or pipe (5) connected to a rectangular housing (7) with an operating device (10) fixed on a shall (19) placed inside the rectangular housing (7) and lever (9) for locking of the operating device (10); the said operating device (10) is provided with a sealing gasket (20) fitted such that during flow of oil due to rupture of electrical transformer tank or bursting of electrical transformer bushing or draining of oil, it swings towards the outlet conduit or pipe (5) so as to restrict flow of oil from the electrical transformer conservator (1) to the electrical transformer tank (4); a handle (8) is provided with the operating device (10) outside the rectangular housing (7) which turns in anti-clockwise direction during filtration or filling or refilling of oil so mat operating device (10) does not restrict flow of oil from the electrical transformer conservator (1) during filtration or filling or refilling of oil; two locking plates (13 and 14) provided outside the rectangular housing for padlocking during normal oil flow and during filtration or filling or refilling of oil. 2. The transformer conservator isolation valve (TCIV) as claimed in claim 1, wherein the said operating device (10) being monitored by switching device (17) connected to terminal box (6). 3. The transformer conservator isolation valve (TCIV) as claimed in claim 1, wherein the rectangular housing (7) comprising air release screw (15) for releasing the trapped air inside the TCIV (3). 4. The transformer conservator isolation valve (TCIV) as claimed in claim 1, wherein the locking plates (13 and 14) are provided with a handle (8) used for padlocking during normal oil flow and during filtration or filling or refilling of oil. 5. The electrical transformer incorporating the transformer conservator isolation valve, as claimed in claim 1. 6. The transformer conservator isolation valve (TC1V) substantially as herein described with reference to the accompanying drawing. For CTR Manufacturing Industries Ltd Mr. A.P. Kumar (Managing Director)

Documents:

1426-mum-2005-claim(granted)-(16-01-2006).doc

1426-mum-2005-claim(granted)-(16-01-2006).pdf

1426-mum-2005-correspondence(04-10-2006).pdf

1426-MUM-2005-CORRESPONDENCE(7-9-2012).pdf

1426-mum-2005-correspondence(ipo)-(09-08-2006).pdf

1426-mum-2005-drawing(16-01-2006).pdf

1426-mum-2005-form 1(16-01-2006).pdf

1426-mum-2005-form 1(16-11-2005).pdf

1426-MUM-2005-FORM 13(7-9-2012).pdf

1426-mum-2005-form 18(13-12-2005).pdf

1426-mum-2005-form 18(16-01-2006).pdf

1426-mum-2005-form 2(granted)-(16-01-2006).doc

1426-mum-2005-form 2(granted)-(16-01-2006).pdf

1426-mum-2005-form 3(16-01-2006).pdf

1426-mum-2005-form 9(18-11-2005).pdf

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