A glass transport system configured to mitigate or stop damaging glass leaks by incorporating silica-containing structural components or introducing silica-containing materials to the advancing glass leak flow to cause the molten glass to interact with silica in the silica-containing material and increase the viscosity of the molten glass sufficiently to slowdown or stop the flow of the glass leak.

Processes and systems for producing glass fibers having regions devoid of glass using submerged combustion melters, including feeding a vitrifiable feed material into a feed inlet of a melting zone of a melter vessel, and heating the vitrifiable material with at least one burner directing combustion products of an oxidant and a first fuel into the melting zone under a level of the molten material in the zone. One or more of the burners is configured to impart heat and turbulence to the molten material, producing a turbulent molten material comprising a plurality of bubbles suspended in the molten material, the bubbles comprising at least some of the combustion products, and optionally other gas species introduced by the burners. The molten material and bubbles are drawn through a bushing fluidly connected to a forehearth to produce a glass fiber comprising a plurality of interior regions substantially devoid of glass.

Processes and systems for producing glass fibers having regions devoid of glass using submerged combustion melters, including feeding a vitrifiable feed material into a feed inlet of a melting zone of a melter vessel, and heating the vitrifiable material with at least one burner directing combustion products of an oxidant and a first fuel into the melting zone under a level of the molten material in the zone. One or more of the burners is configured to impart heat and turbulence to the molten material, producing a turbulent molten material comprising a plurality of bubbles suspended in the molten material, the bubbles comprising at least some of the combustion products, and optionally other gas species introduced by the burners. The molten material and bubbles are drawn through a bushing fluidly connected to a forehearth to produce a glass fiber comprising a plurality of interior regions substantially devoid of glass.

A glass manufacturing apparatus includes a stir chamber disposed on a base. The stir chamber includes an entry port attached to a first connector tube, a chamber conduit, and an elbow conduit. The apparatus also includes a second connector tube connected to the elbow conduit to deliver molten glass therefrom. At least a portion of the second connector tube extends at least partially upward in the vertical direction. The apparatus also includes a delivery vessel connected to the second connector tube. One of the base or the delivery vessel is attached to a reference point that is fixed in the vertical direction. The other one of the base or the delivery vessel is movable in response to thermal expansion of the second connector tube, which is independent of thermal expansion of the other one of the base or the delivery vessel.

A glass manufacturing apparatus includes a stir chamber disposed on a base. The stir chamber includes an entry port attached to a first connector tube, a chamber conduit, and an elbow conduit. The apparatus also includes a second connector tube connected to the elbow conduit to deliver molten glass therefrom. At least a portion of the second connector tube extends at least partially upward in the vertical direction. The apparatus also includes a delivery vessel connected to the second connector tube. One of the base or the delivery vessel is attached to a reference point that is fixed in the vertical direction. The other one of the base or the delivery vessel is movable in response to thermal expansion of the second connector tube, which is independent of thermal expansion of the other one of the base or the delivery vessel.

A receiver front end capable of receiving and processing intraband non-contiguous carrier aggregate (CA) signals using multiple low noise amplifiers (LNAs) is disclosed herein. A cascode having a common source input stage and a common gate output stage can be turned on or off using the gate of the output stage. A first switch is provided that allows a connection to be either established or broken between the source terminal of the input stage of each cascode. Further switches used for switching degeneration inductors, gate/sources caps and gate to ground caps for each legs can be used to further improve the matching performance of the invention.

The present invention concerns a glass fibre manufacturing plant comprising a forehearth forming a passage for conveying molten glass and defined by a first and second opposite longitudinal walls, wherein each longitudinal wall is made of a refractory masonry comprising a cavity of width, Wc, and height, H1c, formed by a floor defined by a base wall, by lateral walls defined by two spacer bricks and by a ceiling defined by a lintel resting on each of the two spacer bricks, and further comprising a support block (20) comprising a hot cuboid portion of width, w, and height, h, wherein w<Wc, and h<H1c, said hot cuboid portion being reversibly inserted in the cavity, thus defining a gap surrounding the hot cuboid portion of the support block when positioned in the cavity, said gap being filled with a resilient material (29), said forehearth being characterized in that, the masonry comprises a spacing element hindering the thermal expansion of the two spacer bricks, such that the distance, Wc, between said two spacer bricks measured at room temperature cannot be reduced below a predetermined hot cavity width, W, at said service temperature, hT, wherein said predetermined distance, W, is larger than the width, w, of the hot cuboid portion of the support block.

The present invention concerns a glass fibre manufacturing plant comprising a forehearth forming a passage for conveying molten glass and defined by a first and second opposite longitudinal walls, wherein each longitudinal wall is made of a refractory masonry comprising a cavity of width, Wc, and height, H1c, formed by a floor defined by a base wall, by lateral walls defined by two spacer bricks and by a ceiling defined by a lintel resting on each of the two spacer bricks, and further comprising a support block (20) comprising a hot cuboid portion of width, w, and height, h, wherein w<Wc, and h<H1c, said hot cuboid portion being reversibly inserted in the cavity, thus defining a gap surrounding the hot cuboid portion of the support block when positioned in the cavity, said gap being filled with a resilient material (29), said forehearth being characterized in that, the masonry comprises a spacing element hindering the thermal expansion of the two spacer bricks, such that the distance, Wc, between said two spacer bricks measured at room temperature cannot be reduced below a predetermined hot cavity width, W, at said service temperature, hT, wherein said predetermined distance, W, is larger than the width, w, of the hot cuboid portion of the support block.

A system and method are described herein for controlling an environment around an inlet tube in the glass manufacturing system. More specifically, the system and method control a level of hydrogen within a humid gas mixture that flows over an exterior of the inlet tube to effectively suppress the formation of undesirable gaseous inclusions in molten glass that flows through the inlet tube.

A system and method are described herein for controlling an environment around an inlet tube in the glass manufacturing system. More specifically, the system and method control a level of hydrogen within a humid gas mixture that flows over an exterior of the inlet tube to effectively suppress the formation of undesirable gaseous inclusions in molten glass that flows through the inlet tube.