How to make China's valve manufacturing industry in the forefront of the world

The valve industry plays an important role in the development of the national economy as an important part of preparation for manufacturing. As there is still a certain gap between China's domestic valve manufacturing industry and the international advanced level, many high-parameter, high-temperature, high-pressure, high-pound critical valves have always depended on imports. In order to promote the localization of valves, the State Council issued the "on speeding up the promotion. After several opinions of the equipment manufacturing industry, the relevant national departments have successively made a series of major deployments according to the requirements of the country for major equipment localization, and are led by the National Development and Reform Commission. Together with the China National Machinery Industry Association and China General Machinery Industry Association, Deployed and formulated the valve localization program for major equipment in related fields, and coordinated with related departments several times, and now the localization of valves has formed a consensus in the domestic valve industry.

After 20 years of research, design, manufacture, and users' joint efforts in recent years, joint research has been fruitful. West-to-East Gas Transmission Project, South-to-North Water Diversion Project, Three Gorges Water Control Project, Million-kilowatt nuclear power unit, million-ton ethylene renovation project, supercritical and ultra-supercritical thermal power unit, oil and gas pipeline transportation, coal chemical industry, large-scale ship, and municipal wastewater In areas such as processing and major engineering equipment and nuclear power, petrochemicals, metallurgy, and power plants, in addition to a small number of high-parameter safety valves and regulating valves that need to be imported, localization of valves has been realized, thereby changing the situation in which key valves of major equipment are permanently controlled by foreign countries. . And strive to achieve as much as possible in the short term major projects and key valves to achieve localization, or part of the realization of localization, so that China's valve manufacturing industry in the forefront of the world.

Starting from scratch, accelerating the pace of localization of valves The domesticization of Chinese valves has always been a long way to go. At the beginning, China advocated the localization of valves. It was not plain sailing and encountered resistance at all levels. It was more controversial. After the older generation of valve industry experts and some research departments in the nuclear industry research and coordination, can use domestic, and resolutely use domestically produced, try to wipe the ball in the localization, to save the country **.

The localization of China’s valves was nothing at all, starting from scratch, and starting from localization in nuclear power plants and nuclear chemicals, as well as petrochemical equipment. In the 1980s, the first 600,000 nuclear power units related to key engineering projects were captured, and later When Qinshan Nuclear Power Station was engaged, Ningbo Valve Factory, as a pilot enterprise for the localization of valves for nuclear engineering fittings, contributed to the localization of valves. After the reform and opening up, China increased the localization of valves. With the continuous improvement of the manufacturing technology of the valve industry, many companies used the advanced resin sand molding line to produce casting blanks. The chemical composition of the castings was analyzed by a direct reading spectrometer. Cobalt 60 gamma rays are used to detect defects in castings; forging uses advanced technologies such as tire die forging and multi-directional die forging. After entering the 21st century, the pace of localization of valves has been accelerated, and there have been achievements in the localization of major projects.

After issuing the "Several Opinions on Accelerating the Revitalization of the Equipment Manufacturing Industry", the State Council led the equipment manufacturing industry to revitalize in an all-round way. For this reason, the National Development and Reform Commission, the China National Machinery Industry Federation, and the China Association of National Associations and other national departments have long proposed the plan to gradually realize the nationalization of major equipment and valves during the “10th Five-Year Plan” and “Eleventh Five-Year Plan” period, which proposed the realization of millions of kilowatts. The key valves of nuclear power plants and the localization of valves for large-scale ethylene equipments of one million tons were introduced into key technologies and self-developed, and many concessions were given to regulations and policies. As a result, relevant valve companies seized the opportunity to take the initiative to make the country Localization of valves. Consensus was formed up and down, and localization of valves made gratifying progress.

Significant progress has been made in the localization of nuclear power valves. The key valves in nuclear power plants are important equipment for nuclear power plants. For a long time, they have mainly depended on imports. Foreign countries have always implemented technology in China in order to earn high profits. This has also become a bottleneck restricting the localization of nuclear power in China. one. The development of domestic nuclear valves started in the early 60s. After several decades of efforts, China has formed a large-scale nuclear valve design, experiment, manufacturing, and testing capabilities, and provided a large number of nuclear-level valves for Qinshan Nuclear Power Station Phase I and Phase II construction. It has made important contributions.

The domestic backbone enterprises have taken active actions and actively overcome difficulties to worry about the country, provoking the heavy burden of localization of nuclear valves for R&D and manufacturing. A batch of old enterprises, such as the China Nuclear Suval Valve, Shenyang Shengshi, Dalian DaLiang, obtained the qualification for designing and producing nuclear valves, and achieved results in the process of localization of nuclear valves in China. At present, 19 companies in China have obtained the civil nuclear pressure bearing equipment design and production qualification license issued by the National Nuclear Safety Administration, and can design and produce nuclear valves. Its design, production of valve types include gate valves, globe valves, and control valves. Among these 19 companies, there are five companies that design and produce nuclear I-level valves (China Nuclear Su Valve, Shen Gao, Da Gao, Shang Valve, and Shanghai Lianggong). At present, China has successfully developed high-level cores such as pressurized water reactor nuclear island nuclear I-level electric gate valve, check valve, electric bellows shutoff valve, fast nuclear reactor reactor nuclear grade II electric corrugated sodium shut-off valve, etc. valve. In 2003, China Nuclear Susu applied for the “Research and Development of Key Valve Design and Manufacturing Technologies for Nuclear Power Stations” project of the National Defense Science and Technology Commission, and decided to fully develop five types of nuclear power plant key valves and break international monopoly. In 2006, the National Development and Reform Commission entrusted the China Machinery Industry Federation to review and demonstrate the implementation of the three nuclear power valve localization projects of China Nuclear Susong Valve, Shenyang Shengshi, and Dalian Dagao's "Mega-Kilowatt-class PWR Nuclear Power Unit Valve Localization Industrialization Project". After that, it will form the core force of the nationalization of the national nuclear valve so that the nuclear power project under construction in China will no longer be subject to human control.

Last year, with the start of the construction of the second generation of improved nuclear power projects such as Hongyanhe and Ningde, and the introduction of the third generation of nuclear power technologies such as Sanmen and Haiyang after the introduction of nuclear power technologies, the localization of nuclear power equipment has made significant progress in the past two years. Based on the Qinshan Phase II expansion project, in recent years, the valve industry has successively successfully developed nuclear valves with advanced domestic level. The valve manufacturers that have passed the technical appraisal are: China Nuclear Susong Valve has completed a nuclear rapid opening and closing isolation valve. , Electrostatic pressure relief valve, low pressure differential swing check valve and nuclear secondary hard seal containment duct isolation valve and other 14 specifications, variety of prototype manufacturing, and passed a variety of type tests and provincial and ministerial level Identification; Jiangsu Shentong Valve's nuclear secondary containment isolation butterfly valve; Dalian Dagao's nuclear grade globe valve, gate valve and check valve; Shanghai valve plant's main steam isolation ball valve; Jiangsu Wujiang City Dongwu mechanical nuclear grade main steam Safety valve and nuclear 2nd and 3rd level auxiliary system safety valves, etc.; Zhejiang Global Valve Group's nuclear 2nd class globe valve; HZD, HQB type 1E nuclear level valve electric device of Jiangsu Changzhou Power Plant Auxiliary Machinery Plant; Yangzhou Electric Power Equipment Repair Factory Nuclear-valve electric actuator with buffer device; Nuclear class K1 valve electric device of Tianshuangtong valve in Tianjin; Nuclear-grade air-isolation valve of Shijiazhuang No. 1 valve factory; Nuclear of Suzhou Newway valve Grade electric shutoff valve, nuclear second grade electric ball valve, nuclear three-level electric butterfly valve; and Shenyang Shengshi high and medium pressure valve nuclear level electric gate valve and nuclear one-step swing check valve and Suzhou high and middle pressure valve factory nuclear level valve products, etc. A batch of nuclear-grade valves passed the new technical appraisal hosted by the National Machinery Industry Federation and other scientific research departments. Recently, the CNS Su Valve has completed the development of various prototypes such as nuclear level, nuclear rapid opening and closing isolation valves, proportional spray valves, hard-sealed containment air isolation valves, electric pressure relief valves, and main steam isolation valves. Type tests and other relevant assessments and completion of cold-state functional tests to meet the nuclear power engineering needs.

At the same time, for the C2 project of Pakistan's Chashma Nuclear Power Plant Phase II project, except for the control valves with high technological content, other localizations were implemented, including nuclear release valves, back pressure regulators, and nuclear 2 and nuclear 3 pneumatics. The regulating valve part is provided by Shanghai Automation Instrument Factory No.7; the process valve part is provided by the CNS Su valve, and the electric actuator is provided by Tianjin Baili Ertong. Zhejiang Huadong Valve provides nuclear electric gate valve.

In the past two years, nuclear valve manufacturers have made progress in the research and development of key nuclear valves jointly with the China General Nuclear Power Group and China National Nuclear Corporation. According to the current bidding conditions for the Qinshan and Hongyanhe projects, combined with the existing capacity and performance of the valve industry, the localization rate of the valves for Hongyanhe No. 1 and No. 2 units will reach about 35%; after another 1 to 2 years, the government will tackle the problem. R & D, nuclear valve manufacturing will have a major breakthrough, in the Hongyanhe 3, 4 units on the localization rate is expected to achieve 60%.

With the successful development of the nuclear valve, it indicates that some products in China's valve industry have entered the high-end field, reflecting that China's valves have reached a certain level of manufacturing. The product has a broad market space and also provides new opportunities for the development of the valve industry. China Guangdong Nuclear Power Co., Ltd. and China Nuclear Suval Valve Co., Ltd., Dalian Dagao Valve and Jiangsu Shentong Valve signed the Cooperation Agreement on the Development of Nuclear Power Valve Localization, marking that the joint development of nuclear valves by China Guangdong Nuclear Power Group and domestic valve companies has been fully started.

Rapid development of localization of high-end valves 1. Localization of high-end valves In the year before, the 5-meter large-diameter vacuum butterfly valve independently developed by Jiangnan Valve Company and undergoing hundreds of experiments was put into production. The first domestic valve entered the large-scale national defense wind tunnel test. Two-way vacuum sealed butterfly valves and special pressure regulating valves were provided for the test device, which contributed to important contributions. In 2005, the company successfully developed the world's first zero-leakage "adjustable metal seal butterfly valve" to replace the gate valves and globe valves that consume more energy and material, and successfully developed the shut-off time well below the international standard of 0.5 seconds. Electro-hydraulic linkage quick-closing valve "made high-end valves.

China Nuclear Suval Valve and Suzhou High and Medium Pressure Valves and Lanzhou High-pressure Valves provide a number of high-end domestically produced valves for China's nuclear chemical system. Among them: China Nuclear Su Valve was originally developed in the 60-70s, and it has independently developed torpedo vacuum valves and rotary vacuum valves. The products, which were used as the main products of domestic production, were mass-produced, enabling the localization of the torpedo vacuum valves for key valves of nuclear chemical systems. Shanghai Valve Factory has participated in many major national projects in the past 40 years. For example, in 1962, it provided stainless steel valves to the National Nuclear Chemical Concentration Project.

Recent localization of key valves has also achieved results: Baoyi Valve Group and Zhejiang University jointly developed high-end ultra-low temperature series valves, and Zhejiang Chaoda Valves provided Shenhua Group with a group of R&D wear-resistant high-temperature wearable metals for the localization of “coal hydrogen production”. Hard seal domestically produced ball valve; Lanzhou High Pressure Valve Co., Ltd. has successfully developed a high-pressure plate valve for localization of anti-high natural gas valves independently developed by Sinopec Puken Field; Yangzhou City, Jiangsu Province, has developed a valve plant for energy conservation and environmental protection. Series of special valves, etc., and gradually promote the application in the country, so that these high-end valves to achieve localization. Beijing Aerospace Petrochemical Technology and Equipment Engineering Co., Ltd. develops and develops two new domestic products, "Safety valve quick-change devices that meet backup and discharge capacity" and "Non-flow type pilot-type pilot-type safety valves."

China Nuclear Suval Valve and Lanzhou High-pressure Valve have become the main supplier of localized one-hundred-and-hundred-and-ten million tons of large-scale ethylene complete sets of equipment special valves. The nuclear valve developed by CNNC Su Valve Co., Ltd. has successfully applied the valve defoaming flat-plate gate valves to Dongfang Chemical Factory. Chemical engineering. The China Nuclear Su Valve Co., Ltd. has supplied nearly 100 million yuan worth of special valves in this field to organize research and development of technical forces to make major breakthroughs in the localization of large-scale ethylene equipment special valves. Zhejiang Huadong Valve successfully developed hydrogenation valves and ethylene valves. Through continuous efforts, the company solved the technical problems comprehensively, developed the first new products such as hydrogenation valves and ethylene valves in China, and the non-wearing ball check valve of Chengdie, Chengdu Huake. Low-temperature test device and high-temperature test device; "CO2 stripping method urea-specific high-pressure regulation butterfly valve" developed by SJ Chemicals. Wear-resistant slagging gate valve developed and produced by the second medium pressure in Zigong City; high-temperature ball valve developed and produced by Katz; The smart valve industry's cryptographic anti-theft front valve, thus rewriting the history of domestic refueling valves dependent on imports. Hongcheng Valve has successfully developed a large-diameter hydraulic turbine inlet hydrodynamic butterfly valve, a loop-style flow control valve, a 2.5-meter turbine inlet ball valve and a 3-meter vacuum butterfly valve.

2. Localization of supercritical, ultra-supercritical generating units and thermal power station valves Harbin Hatch Valve Facing the foreign companies' valve technology, in 2004, China developed the first supercritical valve in China and successively developed Yuhuan. Power plant No. 1 unit million kilowatts ultra-supercritical unit supporting supercritical units supporting steam and water shut-off valves, check valves, hydraulic pressure test valves and supercritical units supporting full-size safety valves, large-diameter gate valves and other high-end valves. The current matching has been successfully connected to the network, which indicates that China has mastered the most advanced ultra-supercritical thermal power generation technology in the world today, and has also made China's power generation equipment manufacturing capabilities and technology levels up. Last year, they also succeeded in large-diameter high-temperature high-pressure forge welding power station shut-off valves.

Kaifeng High-pressure Valve in Henan Province is the most domestically-produced million-unit ultra-supercritical generating unit of Huadian International Zouxian Power Generation Unit #8, and successfully developed a batch of valves such as electric torch control valves for 2X1000MW ultra-supercritical power generation units to realize the largest domestic unit The valve with the highest parameter and the largest diameter is made in China. In the related fields, it has created a number of “No. 1 in the country” and made significant contributions to the localization of special valves for ultra-supercritical generator sets in China; the Dongfang Boiler Valves of Zigong provided 172 units for Datang Xiangtan No. 1 furnace with a 600MW supercritical unit. Forging cut-off valve, boiler auxiliary valve for subcritical and supercritical parameter units, etc. South Valve Company has also recently successfully developed supercritical and ultra-supercritical localized valves, which have reached advanced level.

3, the pipeline of key valves made in China Zigong high-pressure valve large-diameter all-welded forged steel ball valve, Shanghai Neles? The James Burley valve three-stage structural pipeline valve, Chengdu wind valve large-diameter plate gate valve, Suzhou Neway Valve ball valve in the "West-East Gas Pipeline" successful application. And Suzhou Neway Valve and Zhejiang Wuzhou Valve have successively developed 56-inch large-diameter long-distance pipelines with fully-welded ball valves. Their weight amounts to 40 tons, which is the largest in China. The Bethelile Valve Group independently developed the first fully welded ball valve in China. Products, specifically for the laying of underground pipelines, Shanghai Neles? The fully welded pipeline ball valve independently developed by James Burley Valve passed the national technical appraisal; Lanzhou High Pressure Valve established the production scale of the production of high pressure valves as the leading product, and the level of technology and equipment is the leading position in the industry. The Lanzhou pump valve is currently under construction. Group large-scale production and manufacturing base.

The future development of localization of valves In the process of realizing the localization of valves, according to China's equipment manufacturing industry, especially the position of the valve industry in the development of the national economy, valve companies are paying attention to strengthening their capacity for independent innovation and targeting major national industries. Projects, major scientific and technological innovation projects, implementation of key breakthroughs, adjustment of our product structure, the establishment of independent innovation system for enterprises, comprehensively enhance the company's comprehensive competitiveness, so that enterprises face fierce market competition and various industries constantly put forward technical and economic needs, Each of our companies contributes to the localization of valves.

Zhang Zonglie, Executive Vice Chairman of China Tongxie Valve Branch and Chief Engineer of China Nuclear Power Sohu Valve Co., Ltd. recently proposed specific directions and requirements for the localization of valves in the future development of the valve industry, and clearly defined the goal of further localization of valves: Among the ultra-supercritical thermal power generation technologies, high temperature and high pressure valves are the main research and development direction, and key technologies need us to make key breakthroughs; in large-scale pumped-storage thermal power stations, large-diameter ball valves are also proposed, including casting and forging, control and design. Technology; In the millions of kilowatts of large-scale nuclear power plant projects, including valve design, manufacturing, experimental inspection, type experiments, etc., need to re-attack projects; in large-scale ethylene, energy transformation coal chemical industry, PTA large-scale installations and other special equipment and space shuttle operations Need critical valves. We have set clear goals for the future development of our valve industry and technological breakthroughs. We must establish a platform for R&D and industrial innovation of products throughout the industry, so that our company will form a technological innovation system. However, the entire valve industry still has gaps in terms of product quality, high-precision fields, etc., and generally cannot meet the needs of the development of the national high-tech industry. In the petrochemical industry, such as high-pressure polyethylene, high-pressure wave valve, ethylene cracking furnace Clear coke plate valves, ethylene over 2,500 pounds ultra-high pressure or ultra-low temperature key valves also need to import, some special materials, including various structural trousers valve, sleeve valve, jacket valve, control system control valve all rely on imports. Coal chemical industry as the country's future major energy major direction, in the coal in the hydrogenation, heating and hydrogenation of the valve material and structure requirements are high, from the national conditions a lot of need to be cast, the key castings we need to overcome.

Nuclear grade valves require reliable sealing performance. At present, the key nuclear valves of several major domestic nuclear power plants rely on imports. Although the technology of the valve is well overcome, the gap between valve actuators is even greater, and many key actuators are imported. There is a gap between its series of packages and special conditions. For example, valves used in many key projects of the country, such as high-parameter, environmental protection, and energy-saving valves, rely on imports. To understand the localization of valves in the country's key industries and projects, we will strive to achieve the full localization of Chinese valves.

Zhang also said: The valve industry should base itself on optimizing industrial structure, energy conservation and environmental protection, independent innovation, reform and opening up, and people-oriented aspects, and accelerate the establishment of a new technology development system that can independently develop innovative capabilities. The valve industry's products to the end of the "Eleventh Five-Year" domestic production, in the large-scale ethylene special valve to cover 95-100%, coal chemical industry-specific valves are mainly high-temperature hydrogenation to solve the material sealing pair, there are some control-driven The device must also reach 90% or more; in ultra-supercritical thermal power station technology, etc., the proportion of localization of the valve should reach 80%-100%. To achieve the localization of key valves and key technologies, the arduous task, as long as our valve counterparts work together, around the same goal, the localization of the valve will be able to achieve.

Seize the opportunity to promote localization and then go up the steps Ye Jixuan, executive vice chairman of China Valve Association, made clear in the second session of the 5th session of the Valve Association in 2008: The valve industry plays an important role in preparing the manufacturing industry as an important link in the development of the national economy. Its role is in the important areas related to national economy and people's livelihood, such as millions of kilowatts of nuclear power, large-scale clean high-efficiency power generation, supercritical thermal power, gas-fired steam cycles, large-scale hydropower and pumped storage, large air-cooled power stations, and large circulating fluidized bed boilers; Million tons of large-scale ethylene equipment, p-xylene, phthalic acid, polyester equipment; large-scale coal chemical equipment; large-scale underground mining, lifting and washing equipment; large ships, large chemical vessels, aircraft carriers, CNG; atmosphere Governance, urban industrial wastewater treatment, urban pipe network transformation and other aspects require a large number of domestically produced valves as supporting, to meet the requirements of the national economy industry for valve manufacturing, to achieve the scientific development of the entire industry, take the lead in the development, good and fast development, grasping Live in domestic and foreign market opportunities, forge ahead and strive to build China into a global valve master To the production base.