Fisher Fisher - Analysis of the future trends of global valve products

With the development of large-scale complete sets of foreign technology, a series of new complete sets of equipment and stand-alone machines have emerged. The development of new sets of valve-related complete equipment is characterized by large-scale, high-parameter, high-performance automation and complete sets, which are compatible with the control mode of these complete sets of equipment. In the past 20 years, the control mode of foreign valves has also developed greatly. In addition to the general manual, motorized, electric, pneumatic, and hydraulic transmission, the varieties of electro-hydraulic linkage, gas-hydraulic linkage, and automatic control valves are increasing, and there is a trend of further development.

For example, oil refining equipment. Large refinery 36.4 million mt/year (Virgin Islands in the Caribbean), 30 million mt/year (Venezuela). At present, there are nearly 30 refineries with more than 20 million tons/year; The processing capacity of the large-unit refining pressure reducing unit reaches 24 million tons/year, the catalytic cracking unit reaches 8.24 million tons/year, and the hydrocracking unit reaches 3.2 million tons/year. The large-scale equipment has forced the valve to become larger and larger, and the control method has begun to develop in the direction of automation.

Fisher Fisher - Analysis of the future trends of global valve products

In recent years, long-distance pipelines have developed rapidly, the main reasons for which are low cost, which is only equivalent to 1/3 of railway transportation; second, it is buried in the ground and is not easy to destroy; Third, the pipeline construction speed is fast and the investment is provincial. Therefore, the demand for valves for long-distance pipelines has increased significantly in recent years. The capacity of power generation equipment is 300,000 kW for twin-shaft thermal power units, 1.2 million kW for single-shaft thermal power units, and 1.3 million kW for large nuclear power units.

Among the valves matched with these complete sets of equipment, the diameter of the large plate gate valve reaches 1620mm and 2000mm; Large butterfly valve diameter 9750mm; The diameter of the large ball valve is 3050mm, and the weight of the valve is 184 tons, excluding the driving device; The diameter of the gate valve for large water is 2750mm, and the pressure reaches 9MPa.

The economic effect of large-scale equipment can be summarized as improving production efficiency, reducing infrastructure investment, and reducing the consumption of raw materials. With an annual processing capacity of 5 million tons, the investment in production capacity per ton of product is reduced by 50% compared to 1 million tons. Compared with two 3 million tonnes/year refineries, the investment of one 6 million tonnes/year refinery is only 69% of the latter, the steel consumption is 53%, the floor area is 54%, the production cost is 75%, and the labor productivity is increased to 170%.

Due to the increasing level of automation of complete sets of equipment, the main production process of foreign petrochemical enterprises has realized direct digital control, and some have also realized computer hierarchical control. Chemical enterprises such as synthetic ammonia, urea, synthetic fibers, synthetic rubber and synthetic plastics have generally realized patrol detection and alarm, and some enterprises have achieved partial automatic control.

At present, foreign large-scale generator sets of more than 200,000kW are generally developed to computer control; Nuclear power plants are generally computer-controlled; Many countries use computer control for long-distance pipeline systems, and are equipped with microwave communication systems, and the general control room only needs two or three personnel on duty, and the whole line can be monitored through television.

With the improvement of various complete sets of equipment, process flow and performance, the series of foreign valves are still increasing, and many new varieties of valves have appeared in recent years. Such as: emergency shut-off valve, quick switch valve, fire damper, anti-static valve, temperature and pressure reduction valve, butterfly check valve, pressure relief valve, vacuum jacket valve, water-cooled or air-cooled valve, safety gate valve, safety globe valve and other new valves, among which the ball valve, butterfly valve and flat gate valve are the fastest developing valve varieties in the past 20 years.

Fisher Fisher - Analysis of the future trends of global valve products

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