Abstract:
Embodiments of a system that can detect leaks that occur in seals, and in one example, to seals found in a valve. In one embodiment, the system utilizes sensors that measure fluid properties of a sample volume proximate to the seal. The system can compare data from these measurements with data from a sample of a reference fluid (e.g., ambient air) to indicate the presence of working fluid in the sample volume. This result may indicate problems with the seal, e.g., degradation of the seal that is meant to prohibit the working fluid from migrating out of the valve.
Abstract:
The present invention relates to detection and alarm systems for predicting and detecting the location of spills, leaks, emissions, and/or pollution sources, i.e., unwanted fluid (liquid/gas) flow/escape, at refineries, e.g., oil and gas refineries, and plants, e.g., petrochemical, chemical, pharmaceutical, and food processing plants, and avoiding said unwanted flow/escape. According to one embodiment, said system comprises at least one detector, at least one battery powered radio frequency transmitter, preferably, according to one embodiment, a 900 megahertz spread spectrum transmitter, and a central processing location which, according to one embodiment, is preferably capable of handling up to 3000 points in a single cell site.
Abstract:
A liquid supply/drain conduit system that is equipped with an inner leakage detector and a liquid process tank that is equipped with such liquid supply/drain conduit system are disclosed. The liquid supply/drain conduit system includes a first conduit for feeding a liquid into an inlet of a first valve of the normal-closed type, a second conduit of T-shape that has a horizontal portion and a vertical portion, the horizontal portion of the second conduit flows a liquid from an outlet of the first valve into a reservoir tank. The second valve of the normal-open type has an inlet and an outlet, the inlet is situated in relation to the first valve in such a way that it receives through a vertical portion of the second conduit a leaked flow of liquid by gravity when the normal-closed first valve failed to close. A liquid detector is further provided for detecting a leaked flow of liquid through the second valve. The leakage detector may optionally include an alarm system to be activated when a leakage flow is detected. The leakage detector may further send a signal to a process controller for alerting a machine operator of the leakage status of the liquid supply/drain conduit system.
Abstract:
A leak detection system and method for fluid operated device includes a backloaded fluidic oscillator having an interaction chamber, a power nozzle at its upstream end coupled to a source of fluid under pressure and an exit throat at its downstream end. The interaction chamber first diverges from the power nozzle and then converges towards the exit throat. A pair of outlet passages are connected to the exit throat; one of the outlet passages is connected to the fluid operated device and the other of the outlet passages is connected to a fixed volume and a vent whereby the backloaded fluidic oscillator oscillates at a rate which is a function of the leakage of the fluid operated device.
Abstract:
A monitoring device and system for detecting fugitive emissions including emissions from valves and bolted flange connections. The monitoring device includes (1) an enclosure with gaskets to seal the air space around the valve or between the members of the flange, and (2) an indicating cartridge installed contains material which will register a change if emissions leak into the enclosed air space.
Abstract:
A capacitive proximity monitoring device for corrosive atmosphere environments comprising a capacitance field element or sensing element disposed in such a corrosive atmosphere environment and being made of conductive plastic resistant for such a corrosive atmosphere environment. The field element may be a functional part of a functional device that performs a function with respect to the presence of the liquid being sensed; and in some cases the field element is nonfunctional with respect to the liquid, but functional and sensing the capacitance and determining the presence or absence of liquid.
Abstract:
A fluid control valve with leak detection and containment features for use in a fluid handling system incorporating one or more flow controlling devices each including: an actuator; a weir valve and associated valve housing; and a pair of spaced apart diaphragms, one of which serves as the closure member for the weir valve and the other providing a secondary seal defining the limits of a containment chamber for at once preventing contamination of the controlled fluid, protecting the actuating mechanism and allowing immediate detection of valve closure failure. A piston member disposed within the chamber is coupled to the two diaphragms, and a fluid detection device is disposed in communication with a sealed containment chamber formed between the two diaphragms. The system includes electronic control apparatus responsive to the detection device and is operative to instantaneously shut down the system in the event of a detected failure.
Abstract:
Liquids flowing from a nozzle or the like are tested by providing a sensing element having a heated tip part, directing a liquid to be tested to the tip of the sensing element so that the liquid cools the tip part and thereby an electrical signal is produced, and the thus produced electrical signal is utilized for evaluating the liquid and the nozzle.
Abstract:
An alerting 24/7 safety device for industrial soft-seated fluid valves, capable to detect immediately and remotely any damage or breakage of internal valve components. Such a system allows the essential technical intervention time to avoid leakages of the harmful (poison or caustic, with dangerous pressures or temperatures) media within the plants. The inventive step gap is related to the strong improvement of the safety characteristics of the workplaces, in terms of health of the people, environment aspects and attention for the business continuity.