Method for detection and measurement of seat leakage in a valve
AssigneeKarthik Udayakumar
InventorKarthik Udayakumar
Life of this patent
Estimating the term…
Abstract
Embodiments of the present invention provide a method for detecting and measuring seat leakage in valves during air or gas seat tests. The method involves sealing the valve openings and filling the cavity on one side of the closed valve with water. Pressurized air or gas is introduced to the opposite side of the valve, causing any leaks in the valve closure to generate bubbles that displace water through a conduit, forming drops that are collected in a container. The leakage is quantified by counting the drops or measuring the water volume in a graduated container.
Claims12
A method for detecting and measuring seat leakage of a valve, comprising:
- mounting a first open side of the valve on a first blind flange, the first blind flange has a passage for introducing pressurized air on the first open side of the valve;
- clamping a second blind flange over the second open side of the valve to seal the second open side;
- closing the valve to prevent flow from the first side to the second side;
- filling the second open side of the valve with water;
- connecting a container to the second open side of the valve using a conduit through an opening in the second blind flange, the conduit is filled with water;
- increasing the pressure of air in cavity on the first open side of the valve to a predetermined amount;
- observing and counting the water drops as a result of leakage in the seat, where one or more bubbles created due to leakage in the seat, displace the water in the conduit and form drops at the end of the conduit.
An apparatus for detecting and measuring seat leakage of a valve comprising:
- a first blind flange for sealing a first opening on a first side of the valve;
- a second blind flange for sealing a second opening on a second side of the valve, wherein cavity in the second opening at the second side of the valve is filled with water;
- a passage in the first blind flange to introduce pressurized air on the first side of the valve;
- a pressure system connected to the passage for increasing the pressure of air to a predetermined amount;
- a container connected to the second side of the valve using a conduit through an opening in the second blind flange, the conduit is filled with water;
- wherein seat leakage results in formation of bubbles that displaces the water and form drops at the end of the conduit.
Dependencies are inferred from the claim text.