Provides a management information model to achieve efficient utilization of resources, information sharing, calibration management system data dynamic control for Legal Institute automatic vehicle identification system of metrology. The research, in the test management system no specific legal institute of Metrology and R & D. The system has obtained the calibration management system of computer software. The system has obtained the copyright of computer software. The system will tank level measurement process management personnel, equipment, environment, method, measurement traceability and other elements together organically, dynamic management interface between data information and the various elements of the.
Internal external gear pump design, decided to pump function: transportation, small differential pressure, the outlet pressure is not high. It can also convey high viscosity fluid at high speed. The external external gear pump is divided into two kinds: one kind is high speed, for example: hydraulic external gear pump at a low speed, for example: gear measurement electric petrol pump gear metering pump, the meshing used for metering, high pressure, the maximum output of 175KG, or even higher. The transfer of high viscosity fluid. Internal gear is a gear and he have the same modulus, tooth inner gear ring thickness consistent with operation. The meshing is two or more than two of the same modulus, tooth ordinary gear running thick consistent (with straight tooth, helical, herringbone gear etc.). External gear pump drive gear and the driven gear type pump gear steering instead, simple structure, light weight, convenient maintenance, long service life; internal external gear pump drive gear and the driven gear to the same, more complex structure, processing is difficult, small flow pulsation.
Hydraulic piston pump in high gas oil ratio, sand, high pour point oil, wax, heavy oil, deep well, inclined well and horizontal well has strong adaptability. Oil production system of hydraulic piston pump: electronic diesel fuel pump components and types of hydraulic piston is mainly composed of a ground power liquid tank, three cylinder high-pressure pump, control manifold, wellhead control valve and the pump. The pump is the core component of the system. The pump is the core component of the system. The downhole hydraulic piston pump with single and double acting two, ground diesel transfer pump with high pressure plunger pump. The process has two kinds: ① open flow. A single tube structure, with low viscosity crude oil as power fluid, can reduce the pipe friction resistance, but also can reduce the extracted oil viscosity, and the produced liquid mixed together produced the ground. The closed type flow. With oil or water as power fluid, water to add preservatives and lubricants, self circulation is not with the liquid phase output, working process needs only a few additional. Hydraulic piston pump can be single well operation, also can filling station pump group centralized management, capacity and wide adaptation range, from tens to thousands of cubic meters daily, suitable for deep wells, high lift hydraulic piston pump wells, wells, inclined shaft. Has the advantages of adjustable capacity, lifting pump can not afford the tubing, convenient operation and management. Pump efficiency can reach more than 85%. Disadvantage is the ground to build a high pressure pipeline, dynamic solution to deal with, increase the well construction and management costs.
The use of mechanical, physical, chemical, physical and chemical methods such as container extraction in order to obtain and maintain a vacuum device. Vacuum pumps and other equipment (such as vacuum container, vacuum valves, vacuum gauges, connecting pipes, etc.) consisting of a vacuum system, widely used in electronics, metallurgy, chemical, food, machinery, pharmaceuticals, aerospace and other sectors. According to their works, basically divided into a gas pump filters and gas trap pump types. Gas pump: 1, liquid ring vacuum pump (water ring vacuum pump) 2, 3 reciprocating pumps, rotary vane vacuum pump 4, 5 fixed vane vacuum pumps, rotary piston vacuum pump 6, 7 trochoidal gas pump filters, dry vacuum pump 8 , Roots vacuum pump 9, molecular pumps 10, 11 tractor-molecular pump, vacuum pump 12 compound, water jet pump 13, a gas jet pumps 14, 15 steam jet pumps and diffusion pumps and other gases trap pumps include: adsorption pumps and cryogenic pumps, etc. . Currently the most widely used industrial water ringmanual fuel pump and rotary vane vacuum pump. Reciprocating pumps are one of the main vacuum equipment to obtain crude vacuum. Widely used in chemical, food, building materials and other departments, especially in the vacuum crystallization, drying, filtration, evaporation and other processes is more appropriate. Rotary vane vacuum pump for one of the basic equipment in addition to pumping gas airtight container. It may be used alone, or as a booster pump, diffusion pump, turbo pump foreline gas pump filters. This type of gas station pump is widely used in metallurgy, machinery, electronics, chemicals, petroleum, pharmaceutical and other industries vacuum smelting, vacuum coating, vacuum heat treatment, vacuum drying and other processes. Rotary vane vacuum pump has a compact structure, small size, light weight, low noise, vibration and so on. Therefore, it is suitable for use as diffusion pump before the pump, but also applies to the use of precision instruments and laboratory support. For example: a mass spectrometer, refrigerator assembly line, vacuum freeze-drying machine. Rotary vane vacuum pumps can be operated in any inlet pressure, has been widely used in food vacuum packaging, vacuum forming plastics industry. Conveying the printing paper industry, vacuum chuck, vacuum suction and the like.