PRESSURE-COMPENSATED TRANSDUCER ASSEMBLY

摘要

A pressure-compensated transducer assembly has an inner housing with a closed transducer end and an outer housing with an open transducer end. A piezoelectric assembly is in the closed transducer end of the inner housing. A liquid-filled inter-housing space is between the outer housing and the inner housing, and has a transducer end open to the environment and a connection end open to the piezo assembly space. A blocking member separates the transducer end of the inter-housing space from the connection end, and prevents fluids from flowing between the two ends. The blocking member is movable within the inter-housing space in response to pressure differences the environment and the interior space.

主权项

1. A pressure-compensated transducer assembly with a transducer end portion and a connection end portion, the assembly comprising:
an inner housing having a closed transducer end and a sidewall defining a first interior space; an outer housing with an open transducer end and a sidewall defining a second interior space; a transducer in the transducer end portion of the first interior space; an inter-housing space between the outer housing and the inner housing, with the inter-housing space having a transducer end portion open to the environment adjacent the transducer end of the inner housing, and having a connection end portion open to the first interior space; a blocking member in said inter-housing space, said blocking member being effective to separate and define a transducer end portion of the inter-housing space from a connection end portion of the inter-housing space, and effective to prevent fluids from flowing from the connection end to the transducer end, and vice versa; and an interior liquid in the first interior space and extending into the connection end portion of the inter-housing space; wherein said blocking member is movable within said inter-housing space in response to pressure differences between the pressure exerted by the environment on the transducer end of the inter-housing space and the pressure exerted by the interior liquid on the connection end of the inter-housing space.