43results about How to "Stable gas pressure" patented technology

The invention discloses a continuous cyclic drilling process applicable to air drilling. The process includes the steps: a valve plate A (7) of a center check valve (2) is provided with a sealing portion A, a valve body A (6) is provided with a sealing match portion A, a valve plate B (12) of a lateral vertical check valve (3) is provided with a sealing portion B, and a valve body B (11) is provided with a sealing match portion B. During normal drilling operation, a pipeline A is connected with the center check valve (2) to supply air to a drill stem; and when the drill stem needs to be demounted, a pipeline B is connected to the lateral vertical check valve (3) to supply air to the drill stem. The continuous cyclic drilling process applicable to air drilling has the advantages that equivalent cycling density of circulation air of a well can be effectively controlled, and stability in well pressure can be effectively maintained. Drilling time is shortened, and the continuous cyclic drilling process applicable to air drilling is significant to reduction of drilling cost.

The invention discloses a constant pressure sequential turbo-charging system of a V-shaped diesel engine. The constant pressure sequential turbo-charging system comprises two columns of air cylinders composed of multiple air cylinders, multiple air exhaust branches corresponding to the multiple air cylinders, a constant pressure exhaust manifold, a shared air inlet box, a first turbocharger, a second turbocharger, an air cooler, an air inlet stop valve and an exhaust stop valve. The constant pressure sequential turbo-charging system is characterized in that the two columns of air cylinders share the same shared air inlet box; the constant pressure exhaust manifold is connected with the air exhaust branches corresponding to the air cylinders to form a loop. In addition, the invention further provides the design of the shared air inlet box. The shared air inlet box comprises a shared air inlet cavity, cylinder cover high-temperature water discharge header pipes and a cylinder cover high-temperature water inlet header pipe. The constant pressure sequential turbo-charging system can improve the performance of full working conditions of the single-stage high-pressure-ratio diesel engine and is compact in structure, so that the overall size of the diesel engine is controlled.

The invention discloses a continuous pressure-variable sampling device for an Archimedes spiral mass spectrometer, which includes a motor and a base. The metal pipe shaft of the channel, the metal pipe shaft of the gas channel rotates through the first bracket and the second bracket in turn, the metal tube shaft of the gas channel is located above the first bracket, and the combined gear is snapped, and the upper end of the metal tube shaft of the gas channel runs through the second bracket. The gas channel disc is welded behind the bracket; the drive motor drives the gas channel disc to rotate and translate the translation plate through a series of reduction transmission systems, so that the air inlet on the translation plate is always connected with one of the Archimedes spiral grooves, By changing the gas path length and cross-sectional area of ​​the Archimedes spiral groove, it has the ability of high-precision sampling and analysis of a wide range of variable pressure gases; the invention has high sampling accuracy and has the ability of continuous online sampling of the analyzed gas .

The invention discloses a continuous pressure-variable sampling device for a serpentine mass spectrometer, which includes a housing and a mass spectrometer system. An inner plate with a serpentine groove on the upper surface is slidably installed inside the housing. The serpentine line The cross-sectional area of ​​the groove gradually increases from the inlet end to the outlet end. The gas outlet of the serpentine groove penetrates the side wall of the shell through the connecting pipeline and connects with the mass spectrometer system. The lower surface of the inner plate is supported by springs and bearings. The upper surface of the inner plate is closely attached to the inner upper wall surface of the outer shell with ventilation grooves. The air inlet of the air groove penetrates through the upper wall of the outer shell and is connected with the air inlet pipeline and the air inlet valve. The driving motor is driven by the screw mechanism. The inner plate slides in the shell; the invention has compact structure, good airtightness, and has the ability of continuous online sampling of the gas to be analyzed; through the serpentine layout and the sliding of the inner plate in the shell, the gas path of the serpentine line groove can be changed Length and cross-sectional area, so that it has the ability to sample and analyze a wide range of variable pressure gases with high precision.