Design And Study On Explosion-proof Condenser Rubber Ball Cleaning System

Electrical devices, instruments may produce arcs, sparks and high temperature whenthey are used in explosion hazard environment of the petroleum, chemical and othercompanies. Once the concentration of the combustible mixture in the environment reachesthe explosive limit, explosion takes place. Therefore the electrical products must bedesigned to be explosion-proof electrical equipment. This paper is about theexplosion-proof research on the existing condenser rubber ball cleaning system so that itcan work safely in the environment filled with explosive gas and doesn ’ t ignite theexplosive gas.Firstly, based on the explosion-proof electrical standards, combining with the riskyregion where the rubber ball cleaning system exits and the flammable and explosive gasesmay exist, we can confirm the explosion-proof type and explosion-proof electricalequipment level in order to determine the specific requirements for the shell, temperaturelimit, safety measure, safety devices and protective gas. The products are divided into threemain parts: pressure acquisition system, gas distribution system and positive pressurecontrol system.Secondly, the structure of the gas distribution system and pressure acquisition systemwas studied. We are using low-cost ventilating pipeline and device composition; Wediscover the optimal placement of inlet from the four inlet position and pressure acquisitionsystem sensor by using the Fluent simulation method; From the simulation results it can beseen that the other three positions require more than 60%-100% the time consumed by theS3 position.So to the large extent,the air inlet and outlet positions can detemine the qualityof ventilation.Moreover we analyze the reasons why different simulation results exit; Bycomparing the mass fraction and pressure of carbon dioxide measured by the stimulationmodel with the actual value, we can confirm that setting of the parameter and model in thesimulation is close to the actual situation.Finally, the platform of the rubber ball cleaning system explosion-proof control systemis constructed. By using the embedded system Linux and Qt, we designed a positivepressure control system with a graphical interface which can accept instructions and displaythe air pressure function in real time.And it the program also runs well. The following jobsare included:completing the compilation and transplantation of the tslib library; completingthe Qt transplantation; completing the target machine environment configuration; realizationof the inflation process, positive pressure process, power-off function and exceptionhandling process; writing the GPIO and I2 C driver.