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A new monitoring method using distributed optical temperature measurement to measure the temperature of reactor is put forward in the paper. The paper describes the characteristics of the system, and also provides an arrangement scheme of fiber to en-sure the system running well. Good man-machine interface of the system will help staff to check the temperature easily, and send warning signal.
In consideration of the complex condition of down hole environment, an ESP down hole multi-parameter comprehensive measurement system was designed in this paper in order to monitor the down hole information. Firstly, structures of the up hole section and down hole section of the system were introduced respectively. Then some key technologies on the system were illustrated in detail which consists...
To monitor the Electric Submersible Pump (ESP) running state, a multi-sensor down hole test system was designed in this paper. It is the important corollary equipment of the ESP. It can offer a number of detailed parameters of down hole environment. Therefore, this can raise the working reliability and utilizing efficiency of ESP. First, considering the condition of high temperature, high pressure...
A new cascade buck-boost topology with passive lossless snubber is proposed in this paper, it has been successfully used in PFC circuit of high voltage system. Switching losses and EMI noises are reduced by restricting di/dt of the diode reverse recovery current and dv/dt of IGBT collector-emitter voltage. The IGBT in the buck circuit operates at ZVS turn-off and ZCS turn-on. The freewheeling diode...
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