Over the past 20 years, with the development of large sets of foreign technology, a series of new sets of equipment and single machine. The characteristics of the development of new equipment and related valves is large, high parameterization, automation and complete sets of high-performance.
Refinery equipment: the largest oil refinery 36 million 400 thousand T / year (Caribbean Virgin Islands), 30 million T / year (Venezuela). Currently 20 million T / year refinery has nearly thirty.
Maximum unit refining unit processing capacity: atmospheric pressure device 24 million T / year, catalytic cracking unit T / year, reinstall the device 5 million 690 thousand T / year, hydrocracking unit of 3 million 200 thousand T / year.
Oil and gas pipeline equipment: in recent years, the development of long-distance pipeline. The main reason is the low cost, only the equivalent of railway transportation 1/3; two is buried in the ground, not easy to damage; the three is the pipeline construction speed, investment.
Longest oil pipeline 4830Km (Iran) and 4665Km (former Soviet Union, friendship line). Longest oil pipeline 4578km (US, Houston to New York).
The longest gas pipeline 7680km (from Alaska through Canada to the western United States).
Max pipeline diameter 1620 and proposed 2500.
The highest pipeline pressure is 9 ~ 12MPa.
Ammonia plant: maximum 540 thousand T / year and 500 thousand T / year.
Ethylene equipment: maximum capacity of 500 thousand T / year to 800 thousand T / year.
Maximum generating capacity of power generation equipment: double shaft fire motor group L30 million kW (United States, Switzerland), single axis thermal power unit 1 million 200 thousand KW (former Soviet Union), the largest nuclear power plant unit 1 million 300 thousand kW
The maximum valve pass and the equipment supporting the diameter and the maximum pressure: the maximum flat gate valve diameter 1620mm, 2000 and 3050roll (America, Japan); maximum valve diameter 9750mm (British packet design company, Swiss made); the maximum ball diameter 3050mm, the weight of the driving device of 184t (Switzerland, United States Tennessee State): maximum water valve diameter 2750mm, 9MPa (Japan).
The economic effects of large-scale equipment: To sum up, one is to improve production efficiency, two is to reduce investment in infrastructure, and the three is to reduce the consumption of raw materials.
With an annual processing capacity of 5 million T refining equipment compared with the 1 million T, the production capacity of each T investment reduction of 50%.
A comparison of 6 million tons refinery and two 3 million tons / year refinery investment, which is only equivalent to 69%, 53% of steel consumption, covers an area of 54%, 75% of production costs and labor productivity has increased to l70%.
Annual production capacity of 200 thousand tons of synthetic equipment per ton of power consumption is 1450kW.h, the new annual output of 460 thousand tons per ton of product power consumption decreased to 50KW / h. Equivalent to 200 thousand tons of equipment power consumption of 1/29.
600 thousand kW generating units compared with 200 thousand units, unit power equipment cost decreased by 10% ~ 20%, the unit power construction cost, power plant, steel consumption and production hours by 20%.
Automation level of complete sets of equipment, foreign petrochemical industry. The main production process of the enterprise has realized the direct digital control. Synthetic ammonia, urea, synthetic fiber, synthetic rubber and synthetic plastics and other chemical enterprises, there are actual closed-loop control and local optimal control of.20 million kW or more large generators to computer control development. Computer controlled by many countries long pipeline system, and equipped with microwave communication system, the total control room only 2 – 3 personnel on duty. Can monitor the whole situation through the television.
These sets of equipment control methods are also required to adapt to the valve. Therefore, in the past 20 years, foreign valve control mode has great development. In addition to the general manual, motor, electric, pneumatic, hydraulic transmission outside the linkage, even liquid, automatic control valve increasing variety, and further development of the trend.
Series variety level
With all kinds of complete sets of equipment, process and performance improvement, the series of foreign valve varieties are still increasing, in recent years there have been many new varieties of valves. Such as: emergency shut-off valve, fast switching valve, fire valve, anti-static valve, reduce temperature and pressure relief valve, butterfly valve, pressure relief valves, vacuum jacketed valve, water or air cooling valve, safety valve, safety valve and other new valve, including common valve intermediate valve, butterfly valve and is the fastest 20 years of development of valve varieties. At present the highest foreign basic technical parameters of the valve to see the table.
Valve product quality level
A. seal reliability. According to the degree of closure of the closure of the provisions of the use and choice of products, and the classification of the degree of tightness, generally divided into three grades. One, two for high sealing requirements, the general level of the middle and low pressure industrial valves for three. Although the value of leakage is not the same, but there are provisions of leakage.
B. valve switching time. Some valves require a very short period of time to open or close. The length of a switch is marked by the performance of the valve. If the AMES Research Center opened a six inch 300 pound valve needs only 1ms, medium caliber DN350 ~ 400 fast on-off valve switch valve is only 0.6s, the time to reach 0.05 ~ O.1s, Japan’s Okano valve company supra
The speed is 1s, the medium is air, DN40, PNl4MPa, the working temperature is 1267 DEG C, the medium velocity is the speed of sound is 11 times, 3640m / s.
Manufacturing process level
Foundry: foreign castings for cupola furnace with double electric furnace steel to increase refining. High quality liquid metal, chemical stability, modeling of resin sand, tide film automatic line or mechanical modeling (mechanized shape about 50% microcomputer control, advanced equipment, casting size, high precision, smooth surface, sand means better.
Forging: the majority of foreign countries using die forging, and has been used in multi direction forging and closed die forging. Maximum forging diameter up to DN500.
Heat treatment: most of the heat treatment in foreign countries has been controlled heat treatment. Such as Japan controlled processing has accounted for about 70%80%, as well as the use of vacuum heat treatment. Nitriding is also used in the process of ion nitriding, soft nitriding, chemical treatment and so on.
Mechanical processing: the processing equipment has been automated, and has adopted the NC machining center, as well as the application of group control equipment for processing, the widespread adoption of the tool, clamp group technology and machine digital measuring instrument, equipped with special cleaning assembly plant, test equipment advanced, complete, advanced leakage detection means.
