Over the past 20 years, with the development of large-scale complete sets of technology abroad, a series of new sets of equipment and stand-alone machines have emerged. The development of new sets of equipment related to valves is characterized by large scale, high parameterization, high performance automation and completion.

           Refining equipment: 36.4 million T / year(Virgin Islands, Caribbean), 30 million T / year(Venezuela). At present, there are nearly 30 refineries with more than 20 million t/year.

           The processing capacity of the maximum unit oil refining device: 24 million T / year for the constant decompression device, 8.24 million T / year for the catalytic cracking device, 5.69 million T / year for the reforming device, and 3.2 million T / year for the hydrocracking device.

           Oil and gas long pipeline equipment: In recent years, long pipeline has developed rapidly. The main reason is that the cost is low, which is only 1/3 of that of rail transport; Second, it is buried underground and is not easy to destroy; Third, the pipeline construction speed, investment province.

           he longest pipelines were 4830Km(Iran) and 4665Km(former Soviet Union, Friendship Line). The longest pipeline is 4578km(Houston to New York, United States).

           The longest gas pipeline is 7680 km(from Alaska to Canada to the western United States).

           The maximum pipeline diameter is 1620 and the proposed 2500.

           The maximum pipeline transmission pressure is 9 to 12 MPa.

           Synthetic ammonia equipment: maximum 540,000 T / year and 500,000 T / year.

           Ethylene equipment: maximum capacity 500,000 T / year to 800,000 T / year.

           Maximum unit capacity of power generation equipment: two-axis thermal power unit L3 .3 million kW(US, Swiss), single-axis thermal power unit 1.2 million kW(former Soviet Union), largest nuclear power unit 1.3 million kW(Germany)

           Valves equipped with these sets of equipment have a maximum diameter and maximum pressure: a maximum plate gate valve diameter of 1620mm, 2000 and 3050 roll(United States, Japan); Maximum butterfly valve diameter 9750mm(designed by British Baowen Company, made in Switzerland); Maximum ball valve diameter 3050mm, not counting the weight of the drive device 184t(Swiss made, Tanna, United States): Maximum water gate valve diameter 2750mm, 9MPa(Japan).

           The economic effect of large-scale equipment: In a nutshell, one is to increase production efficiency, the other is to reduce infrastructure investment, and the third is to reduce the consumption of primary combustion materials.

           Investment in refining equipment with an annual treatment capacity of 5 million T decreased by 50 per cent per product production capacity compared to 1 million T.

           A 6 million T / year refinery compared with two 3 million T / year refineries, the investment is only equivalent to 69 % of the latter, the steel consumption is 53 %, the area is 54 %, the production cost is 75 %, and the labor productivity is increased. To l70.

           The annual power consumption per ton of 200,000 T synthetic ammonia equipment is 1450 kW. H, and the annual power consumption per ton of new 460,000 T devices is reduced to 50 kW/h. It is only equivalent to 1/29 of the 200,000 T equipment power consumption.