- por burbujeo de presión directa
- por burbujeo con cámara de vacío
- por detección de halógenos
- por cambio de presión
- por espectrómetro de helio y sonda, trazador y sonda y mediante campana
- por sonda de detección de la conductividad térmica
- por ultrasonidos
- En primer lugar, realizar una prueba de fugas sobre un componente o un sistema antes de ponerlo en servicio tiene muchos beneficios. Por ejemplo, una prueba de fugas con helio en un intercambiador de calor permite verificar la tasa de fugas en las soldaduras de la placa de tubos, así como saber si hay fugas en los propios tubos. Otro ejemplo de este tipo sería realizar una prueba de fugas en vacío en la base de un tanque.
- En segundo lugar, si se sospecha que un sistema podría tener una fuga, alguno de los métodos de prueba de fugas puede ayudar a establecer su posición para poder repararla.
Bubble Testing
Bubble leak testing is used to find leaks in many different components. The two most common forms of bubble leak testing are the direct-pressure technique and the vacuum-box technique. The direct-pressure technique is conducted by pressurising a component with a gas and then either submerging it in a solution or applying a solution to the outside of the component. If a leak is present, bubbles will form on the surface because of the leaking gas passing through the solution. The vacuum-box technique is conducted on parts that cannot be directly pressurised or where access is not available to both sides of a component. The test is conducted by applying a solution to an area of a pressure-boundary surface and creating a differential pressure across the area, causing the formation of bubbles as leakage gas, such as atmospheric air, passes through the solution.
Bubble Testing
DESCARGAR VERSIÓN EN PDFPressure change testing
Pressure change testing is conducted to determine the allowable leakage rate across the boundaries of a closed component or system at a specific pressure or vacuum. By monitoring the change in pressure over a period of time, the leakage rate can be determined, either by the loss of pressure in a pressurised system or through the increase in pressure in a system under vacuum. The change in pressure can then be compared to a maximum allowable change in either pressure per unit of time, percentage volume, or mass change per unit of time.
Pressure change testing
DESCARGAR VERSIÓN EN PDFHalogen Diode – Leak Inspection
The Halogen diode detector probe test is a method to conduct a leak inspection by using a tracer gas and a detector probe to detect the presence of halogen. The detection of halogen across a pressure boundary would indicate the presence of a leak.
Halogen Diode – Leak Inspection
DESCARGAR VERSIÓN EN PDFBubble Testing
Bubble leak testing is used to find leaks in many different components. The two most common forms of bubble leak testing are the direct-pressure technique and the vacuum-box technique. The direct-pressure technique is conducted by pressurising a component with a gas and then either submerging it in a solution or applying a solution to the outside of the component. If a leak is present, bubbles will form on the surface because of the leaking gas passing through the solution. The vacuum-box technique is conducted on parts that cannot be directly pressurised or where access is not available to both sides of a component. The test is conducted by applying a solution to an area of a pressure-boundary surface and creating a differential pressure across the area, causing the formation of bubbles as leakage gas, such as atmospheric air, passes through the solution.
Bubble Testing
DESCARGAR VERSIÓN EN PDFMass Spectrometer – Helium Leak Test
Helium leak mass spectrometer test is a way to detect very small leaks across a pressure boundary.