Provided is a damper structure for an enclosed derrick, which can constantly compensate and maintain a pressure of an inner space of an enclosed derrick structure. The damper structure for the enclosed derrick includes: one or more communication ducts installed in a side of the enclosed derrick; and one or more open/close dampers coupled to the communication ducts to open or close the communication ducts, whereby air is selectively supplied to or exhausted from the enclosed derrick.
Damper structure for a sealed derrick
2016-03-29
Patent
Electronic Resource
English
TEMPERATURE AND PRESSURE MONITORING SYSTEM OF SEALED DERRICK STRUCTURE
European Patent Office | 2017
|Temperature and pressure monitoring system of sealed derrick structure
European Patent Office | 2016
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