Development of a new type of field first-aid negative pressure fracture fixation splint;

Objective To develop a portable, easily-used and effective fracture fixation material during emergency treatment of battle wound.

Describes the principle,structure,function and operation method of new negative pressure fracture fixation splint.

Determination of optimal jumping height of fixed valves of sucker rod pumps and its field application;

Gas flow field on folded-downward edge fixed valve tray was simulated by turbulence models and FLUENT 6.

Structure and operating performance of new fixed valve tray with suspending downcomer (DJ - 5 tray) was introduced.

Development and application of the standing valve cover;

The numerical simulation was used to the flow near the Fixed-cone valve,in the hood and the downstream pipeline in the water release for the Bakun Hydropower by applying 2-D and 3-D RNGκ-εturbulence model.

Research and application of standing valve assembly on tube pumps for blockage for prevention;

The barrel,plunger and standing valve of the pump were designed,improving the barrel\'s force conditions and reinforcing the screw thread\'s sealing performance and tensile strength.