Leak detection system for pressurized pipeline
First Claim
1. A leak detection system for a pressurized pipeline used in conjunction with a fluid control valve having a valve actuator, which system comprises:
- a normally flat, thin sheet of material having a pair of opposed ends brought together to form a cylinder around said pipeline so that said sheet has a spring force from a cylindrical position to a normally flat position;
a seal between said cylinder and said pipeline to form a closed chamber around said pipeline;
at least one fastener to hold said ends of said sheet together in said cylindrical position unless a force overcomes said fastener;
a switch to detect movement of said cylinder toward said flat position; and
a mechanism to connect said switch to said valve actuator to close said valve.
1 Assignment
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Accused Products
Abstract
A leak detection system for a pressurized pipeline used in conjunction with a fluid control valve having an electric actuator or with an alarm signaling device. The leak detection system includes a chamber surrounding the pipeline. A normally flat or planar thin sheet of material has a pair of opposed ends brought together to form a cylinder around the pipeline so that the sheet has a spring force when in a cylindrical position to a normal flat position. A seal between the cylinder and the pipeline forms a closed chamber around the pipeline. At least one fastener holds the opposed ends of the sheet together in the cylindrical position unless the force overcomes the fastener. A switch detects movement of the cylinder toward the flat position and the switch is connected to the actuator in order to close the valve.
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Citations
17 Claims
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1. A leak detection system for a pressurized pipeline used in conjunction with a fluid control valve having a valve actuator, which system comprises:
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a normally flat, thin sheet of material having a pair of opposed ends brought together to form a cylinder around said pipeline so that said sheet has a spring force from a cylindrical position to a normally flat position; a seal between said cylinder and said pipeline to form a closed chamber around said pipeline; at least one fastener to hold said ends of said sheet together in said cylindrical position unless a force overcomes said fastener; a switch to detect movement of said cylinder toward said flat position; and a mechanism to connect said switch to said valve actuator to close said valve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A leak detection system for a pressurized pipeline used in conjunction with a fluid control valve having a valve actuator, which system comprises:
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a normally flat, thin sheet of material having a pair of opposed ends brought together to form a cylinder around said pipeline so that said sheet has a spring force from a cylindrical position to a normally flat position; a seal between said cylinder and said pipeline to form a closed chamber around said pipeline; a magnet to hold said ends of said sheet together in said cylindrical position unless a force overcomes said magnet; a switch to detect movement of said sheet of material in said cylindrical position toward said flat position; and a mechanism to connect said switch to said valve actuator to close said valve. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification