Transformer Conservator Isolation Valve Dynamic Flow Control
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Solution Overview
Problem
Conventional non-return valves in electrical transformer conservators block oil circulation during filtration or refilling, preventing effective oil filtration and causing isolation issues during tank ruptures or bushing bursts.
Innovation Solution
A dual-mode Transformer Conservator Isolation Valve (TCIV) with an operating device and sealing gasket that restricts flow during abnormal conditions but allows free flow during normal operations, using a lever and locking plates to manage oil flow between the conservator and tank.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional preset non return valve is used in the conservator outlet conduit, then isolation of the electrical transformer conservator is achieved in case of bursting or rupture, but oil circulation is blocked during filtration or refilling operations
Solution Approach 1:
The valve transitions from a static preset non return valve to a dynamic system where the operating device can change position between open and closed states. The shaft enables the operating device to rotate and move between blocking and non-blocking positions, allowing the valve to adapt its flow control characteristics based on operational requirements.
Solution Approach 2:
The valve function is segmented into distinct operational modes through the operating device that can independently control flow. The operating device acts as a separate controllable element that can be positioned to either block or allow oil flow, decoupling the isolation function from the flow control function.
2Reliability
If the preset non return valve remains closed during filtration operations, then isolation is maintained, but oil filtration and refilling cannot be performed
Solution Approach 1:
The operating device provides dynamic control by allowing manual or automated positioning to open state during filtration operations. The shaft mechanism enables smooth transition between closed isolation mode and open filtration mode, making the valve easy to operate for different maintenance tasks.
Solution Approach 2:
The valve serves multiple functions through the operating device: it can isolate the conservator during abnormal conditions, allow free flow during normal operations, and enable filtration/refilling operations. The single valve structure with operating device replaces the need for separate isolation and flow control mechanisms.
3Object-affected harmful factors
If the operating device swings towards the outlet conduit during abnormal flow, then oil leakage is prevented, but normal oil flow during filtration is restricted
Solution Approach 1:
The operating device dynamically positions itself based on operational conditions: swinging towards the outlet conduit to block flow during abnormal conditions (preventing oil leakage), and positioned away from the outlet during normal operations to allow free oil flow for filtration and refilling.
Solution Approach 2:
The operating device acts as an intermediary element between the inlet and outlet conduits. It can intervene to block abnormal oil flow towards the outlet while allowing normal operational flow, serving as a controllable mediator that regulates oil movement based on system conditions.
Data Source
Figure 1A~1C
Figure 2A~2B
AI summary
A Transformer Conservator Isolation Valve, (TCIV) 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 scaling 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 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 the rectangular housing (7) which turns anti-clockwise during operation, the operating device (10) does not restrict flow of oil from the electrical transformer Conservator (1) during filtration or filling or refilling, two locking plates (13 and 14) provided outside the rectangular housing.