Hydraulic System Design Of Testing Device For Subsea Control Module

As the economy develops continuously,the consumption of energy is also becoming more and more big,more and more attention has been taken by offshore oil resources around the world, especially oil and gas development in deep-sea. However, China's technology in offshore oil field is still relatively backward, especially the deep-water operations have just started. Subsea control module (SCM) is a key component of underwater control system in the deepwater oil and gas production facilities, which is responsible for controlling and monitoring the subsea production facilities and completing underwater oil and gas production. Because of the high price and the difficulty of underwater maintenance operation of subsea control module, it needs to be tested before launching the installation of subsea control module which ensures that functionality and performance of the subsea control module is qualified to meet the requirements. The design and research of subsea control module testing device is of great significance to promoting the development of subsea production facilities.Firstly, through the study of the function, operating principles and main structure of the subsea control module, the overall design of the testing device has been determined. Testing device consists of SCM test stand,test hydraulic power unit,signal generator and electronic test unit. The scheme of electrical test unit and signal generator has been confirmed through the study of the master control station over the water and the sensor signal within underwater production facilities; the scheme of SCM test stand and test hydraulic power unit has been confirmed through the study of underwater production facilities actuators and the SCM hydraulic system. The working principle of test equipment has been analyzed according to the testing demand of SCM.Secondly, the pressure and flow of test hydraulic power unit have been determined throuth the analyzes and calculates of the pressure and flow required while the subsea control module controls the actuator open and close. And according to the requirements of test hydraulic power unit performance, the hydraulic and electric control systems of test hydraulic power unit have been designed, and the algorithm has been studied which is used to select the hydraulic components.Thirdly, according to the function and performance of SCM test stand, the hydraulic system of SCM test stand has been designed. And according to the hydraulic system of SCM test stand, this paper has designed frame, mounting base and control panel of SCM test stand. And furthermore, mechanics strength analysis to the SCM test stand frame and mounting base has been carried out. According to the SCM working situation, SCM hydraulic testing methods have been designed.Finally,this paper introduces the AMESim software,and has carried out the mathematical analysis to SCM electro-hydraulic control valves. And furthermore, the test models of test hydraulic power unit and SCM electro-hydraulic control valves have been found by AMESim software. The model of hydraulic test system set up according to the typical hydraulic test method has been dynamically simulated. The simulation results show that the hydraulic system design of the underwater control module testing device is reasonable and the test methods of SCM can verify that the hydraulic valves of SCM meet the requirements or not.