| 摘要 |
<p>According to an embodiment of the invention, a system is provided which includes a source of infra-red or ultra-violet energy (12). A slave unit (14) is connected to a device, where the device can be a safety valve (20) or a flapper valve assembly (38) in a wellbore, at a remote location from the energy source (12), and a transmission line (10) transmits the energy from the source (12) to the slave unit (14). The salve unit (14) responds to the energy received from the transmission line (10) and adapted to convert energy to a mechanical output for actuating the device. The slave unit (14) can be in the form of a member (30) or bellows (34) that expands, where fluid within the bellows (34) expands, in response to being exposed to the energy from the transmission line (10). The expansion of the member (30) and the bellows (34) produce a mechanical output in the form of linear motion.</p> |
