Leak detector for process valve
First Claim
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1. A leak detection system for detecting a leak through a closed valve disposed between an upstream pipe and a downstream pipe of an industrial process, the system comprising:
- an insertable plate coupled to the valve in the pipe in-line with the fluid flow;
a sensor tap extending through the insertable plate to a lumen of the pipe; and
a leak detector coupled to the sensor tap and adapted to detect a leak through the valve based on a measured acoustic signature.
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Abstract
A leak detection system is described for detecting a leak through a closed valve disposed between an upstream pipe and a downstream pipe of an industrial process. An insertable plate is coupled to the valve in the pipe in-line with the fluid flow. A sensor couples to the flow and provides a signature output. A leak detector is coupled to the sensor and adapted to detect a leak through the valve based upon the signature output.
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Citations
24 Claims
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1. A leak detection system for detecting a leak through a closed valve disposed between an upstream pipe and a downstream pipe of an industrial process, the system comprising:
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an insertable plate coupled to the valve in the pipe in-line with the fluid flow;
a sensor tap extending through the insertable plate to a lumen of the pipe; and
a leak detector coupled to the sensor tap and adapted to detect a leak through the valve based on a measured acoustic signature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An acoustic leak detection system for detecting a fluid leak through a valve of an industrial process, the valve having an upstream passageway coupled to a downstream passageway and a valve closure element adapted to selectively close off fluid flow through the valve, the valve having one or more sensor taps extending into the valve adjacent to the downstream passageway, the system comprising:
a leak detector coupled to the one or more sensor taps and adapted to detect a leak through the valve based on a measured acoustic signal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A leak detection system for detecting a leak through a closed valve element of a valve assembly disposed between an upstream pipe and a downstream pipe of an industrial process, the system comprising:
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a first sensor disposed in an upper portion of the valve assembly downstream from the closed valve element and adapted to measure pressure in the downstream section;
a flow restriction element disposed in a bottom portion of the valve assembly downstream from the closed valve, the flow restriction element;
a cross-bore exposed to the fluid flow and extending into the flow restriction element less than a full width of the flow restriction element from a direction of the closed valve;
a second sensor disposed in a lower portion of the valve assembly and coupled to the cross-bore, the second sensor adapted to measure a static pressure in the downstream section; and
a leak detector coupled to the first and second sensors and adapted to detect a leak through the closed valve based on a differential signature. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification