Based on the analysis of its motion performance about Hooke’s joint-gear mechanism, the Hooke’s joint-gear mechanism of differential velocity vane pump is brought forward. By analyzing its motion rule on the driving system of the differential velocity vane pump, the design parameters of the Hooke’s joint-gear mechanism of differential velocity vane pump are shown. The overall structure and its principle prototype are designed. Based on the principle prototype of the differential velocity vane pump, the experimental platform is established to testify the draining and trapping fluid. The results are shown that Hooke’s joint-gear mechanism of differential velocity vane pump can achieve the function of draining and aspirating fluid, and the design on the driving system and the pump structure are correct.

Now steam stimulation gradually become one of the major thermal recovery methods, and hydrogen sulfide appears in the well casing. With the increase of the thermal recovery time and the application of SAGD technology, the number of wells containing hydrogen sulfide increased, and concentration of hydrogen sulfide are also rising,Producing corrosion products - ferrous sulfide. Ferrous sulfide has pyrophoric. When ferrous sulfide in contact with oxygen in the air can cause spontaneous combustion at room temperature. In order to avoid the occurrence of spontaneous combustion of ferrous sulfide we had an in-depth study of the spontaneous combustion of ferrous sulfide. Through laboratory tests we found the following points. At room temperature,sulfurization reaction of H2S gas and iron oxides occurs more easily in a dry environment. Temperature, H2S humidity, various iron oxides,have important effects on the generation of iron sulfide.

For sliding friction pairs formed by differential gears and gaskets, it is necessary to study the friction performance under the coupling of multiple working conditions (impact, vibration and alternating load). For example, it is of great significance to study the performance of sliding friction pair in the rear axle differential of truck and the friction and wear performance of the internal parts of aircraft and ships under the coupling condition of multiple working conditions, so as to obtain longer service life and excellent performance by improving the friction performance. The ball-disc pairs were experimentally built to simulate the friction and wear mechanism of materials under different types of dynamic loads. Under the condition of non-polluting white oil lubrication, increased the contact ratio of the pair, and made the pair reach the experimental state of no dynamic pressure lubrication, selected different types of dynamic loads (step load, damped harmonic excitation load (DHE), Short-term high load) loading method. During the experiment, force sensors and online visual ferromagnetic sensors were used to monitor friction and wear rate signals in real time, and TR200 profilometer and scanning electron microscope were used to observe and study friction characteristics. The results show that a reasonable step load can improve the friction and wear state of the ball-disk pair during the running-in period and reduce the peak wear of the surface contact portion of the pair of materials. The main wear form of the experimental pair under constant load and step load for plastic flow and squeezing deformation, the fatigue of the surface material is caused by the high frequency fluctuating load of DHE. Therefore, it is concluded that the step load has an effect on improving the friction and wear performance of the mating pair, and the DHE load has a damage effect on the mating pair.