Patent ID: 8695623
Filing Date: 2014-04-15
Classification: G05D,Y10T

Abstract:
1. A gas concentration control device for pressure vessel, which is adapted to control a gas concentration inside an accommodation space that is set in an interior of a chamber formed inside a pressure vessel curing oven, the pressure vessel curing oven comprising a gas inlet tube and a gas outlet tube, which are in communication with the accommodation space for inflow and outflow of gas, the gas inlet tube being connected to a gas source, the gas inlet tube being provided with a first valve, the gas outlet tube being provided with a second valve, the gas concentration control device comprising: a gas concentration detection device, which is operative for timed detection of a concentration of the gas inside the accommodation space; and a control unit, which is connected to the gas concentration detection device, the first valve, and the second valve and is provided for setting a predetermined concentration, performing a judgment if the gas concentration inside the accommodation space reaches the predetermined concentration according to a detection of the gas concentration detection device, and thereby controls the first valve and the second valve according to a result of the judgment; wherein the gas concentration detection device is connected by a connection tube to the accommodation space and comprises a gas concentration detector and a gas parameter regulator, the gas concentration detector detecting concentration of a gas, the gas parameter regulator being connected between the connection tube and the gas concentration detector to regulate the gas flowing therein through the connection tube in order to make one or more parameters of the gas matching a measurement range of the gas concentration detector for performance of detection by the gas concentration detector.