Domestic valve actuator has been used for various industries in the future valve market development orientation analysis

Domestic valve actuator has been used for various industries in the future valve market development orientation analysis

Valve market in the process of social and economic development, as a key step to prepare the manufacturing industry in advance, has a very important role. Because there is still a certain difference between the domestic and international leading level of Chinese valve processing and manufacturing industry, many high main parameters, ultra-high pressure and high temperature, high pound class of important valves have been relying on imports.
In order to promote the domestication of the valve, after the issue of the “Some Opinions on speeding up the revitalization of equipment manufacturing industry”, the relevant state departments according to the important equipment made by our country to be domesticated, have made a series of major decisions and deployments, and then by National Development and Reform Commission, the Federation of Chinese Machinery Industry and the China General Machinery Industry Association together, We have formulated the valve localization plan of major equipment in relevant industries, and have also coordinated with relevant departments for many times. Now the valve localization has reached a consensus in the field of valves in China.
Domestic valve actuator has been used in various industries
Song Yinli, secretary general of the Chinese Valve Association, shows that at the present stage, most of the domestic valve actuator can meet the safety and reliable operation of thermal power generation units, and has the prerequisite conditions and capabilities of localization.
Actuator is the most important valve control system, according to the structural characteristics of the division into electric actuator, pneumatic actuator, vapor-liquid actuators and hydraulic actuators; According to the function division can be divided into power switch type and regulator type two. At present, the super (super) critical thermal power generation unit is used in the execution mechanism to import as the leading. Each kilowatt ultra (ultra) critical value thermal power generating set must be equipped with electric actuator 600 sets, pneumatic actuator 200 sets, steam liquid connected actuator 20 sets and a little hydraulic actuator.
At the present stage, the kilowatt over (over) critical value thermal power generation generator set executive mechanism is estimated to be about 15% of the value of the commodity localization rate *, the value of imported executive agency commodities is about 85%, especially in the adjustment of the implementation of the localization rate is not 10%. In the heating furnace side (including desulfurization and dust removal), air inlet valve and other supporting electric actuator see more imported commodities; A few non-critical valves on the side of the steam turbine and the water part are applicable to domestic electric actuator; The vast majority of pneumatic actuators choose imported goods; The working pressure exceeds 16MPa, the temperature is higher than 540¡æ, the key valve are imported products.
Important reasons for customers to use advanced valve actuator: A, imported goods see the full intelligent actuator, compact structure, posture and signal transmission speed is faster, can achieve remote transmission, adjustment and fault handling is simple and convenient, can achieve double transmission, PID adjustment, automatic calibration, calibration and diagnosis, amplifier and actuator into an integrated system, good dynamic performance, relative high precision, But the delivery time is long and the price is expensive; Two, super (super) critical value valve localization probability is very small, most of the important valves are imported goods, and most of the imported valves are immediately supporting facilities imported actuator.
Along with the implementation and execution of the important valve localization work of the super (super) critical value thermal power generation set, the proportion of the valve localization rises, plus the pneumatic actuator generally uses the valve factory to do the immediate supporting method, the actuator selection of domestic proportion will increase.
The key gap between China and foreign electric actuators depends on:
1. There is a little difference between the stability of power switch actuator and imported products, and the failure rate of equipment is also high, so customers are not very comfortable;
2. Lack of electric actuator with large rotation and high-speed rotation, which cannot meet user requirements;
3. The adjustment actuator is mainly reflected in the accuracy, stability and foreign countries have certain differences.
There is no big difference in the main body of the pneumatic actuator. There are significant differences in the service life of the positioning instrument, relay, intelligent transmitter, complete supporting components and valve pieces used in the operation. There are few domestic manufacturers of steam and liquid actuator, some companies have good products, but many enterprises have a gap in product quality reliability and stability and foreign countries; Hydraulic continuous actuator is not specialized in manufacturing in our country. But this product is only used in the places where the fast switch is stipulated, and the demand is very little.
In recent years, China’s executive processing and manufacturing industry has improved its advantages in product research and development, manufacturing and material testing, and its quality control level has been significantly enhanced. The products of key technical enterprises have reached or approached the advanced level overseas, and some of the products have been gradually used in the thermal power generating units and various petrochemical devices of over (over) critical value.
At the level of the electric actuator, A portion of the electric actuators produced by Changzhou Power Plant Boiler Auxiliary Machinery Co., LTD., Yangzhou Electric Power Machinery and Equipment Repair Factory, Yangzhou Hengchun Electronics Co., LTD., Tefulong Investment Co., LTD., Tianjin Ecotte Measurement and Control Technology Co., LTD., and Shenzhen Southern Area American General Electric Co., LTD., have been used to generate over (over) critical thermal power generation units.
At the level of pneumatic actuator, there is basically no brand specializing in the production and manufacture of pneumatic valve actuator in China. Generally, pneumatic actuator is made by valve manufacturer. Hunan Power Grid Construction Corporation Co., LTD., Shanghai Walde Power Plant Valve Co., LTD., Shanghai Instrument No. 7 Factory and other companies for over (over) critical value thermal power generation generator set supporting a part of pneumatic valves using homemade actuators.
Application results show that most of the domestic valve actuators can meet the safety and reliable operation of thermal power generation units, and have the prerequisite conditions and capabilities of localization. At the same time, the domestic valve actuator has also been widely used in nuclear power plant, metallurgical industry, sewage treatment and petroleum and petrochemical industries.
Introduction: With the commencement of several century projects such as Sichuan gas transmission to the east, eight horizontal eight vertical, south-north water diversion project, the demand for valve commodities and service facilities has increased dramatically; In addition, in our country are facing the arrival of the era of modernization, the petrochemical industry, electric power enterprises, metallurgical industry units, chemical manufacturing industry and urban planning and construction use large households will improve demand for valve products. Driven by four major energies, industrialization, urbanization and economic globalization, high-end equipment manufacturing market prospects or broad, internationalization, localization, intelligent, will become a key bearing of the future valve industry development in our country.
Future valve market development orientation analysis
Valve field prospect can be expected
At present, the petroleum chemical industry in our country is developing towards import substitution, industrialization and globalization, and will maintain the sustainable development concept in the future 5 years. In China, dozens of sets of more than ten million tons of oil refining units and one million tons of ethylene units will be newly created and expanded, creating a broad development space for the needs of petrochemical valves. In addition, various types of pumps running in Chinese oil refineries have long been old and aging, in urgent need of renewal and renovation.
In recent decades, China’s policy and economic environment has become better, providing beneficial development trend standards for the valve industry. China’s petrochemical and other industries machinery and equipment encounter dismantling cycle time, the amount of newly created equipment is large, which is the valve market demand is great, and it is estimated that in the next few years, the valve field will still have a relatively large improvement.
In terms of price, the valve market price is relatively stable in recent years, although every year slightly adjusted, but the strength is not big, the industry prospects are very promising. Regarding scope, according to the statistical information data of China Statistical Bureau in 2009 shows, our country valve processing manufacturing industry scale there are more than 1700, production and manufacturing valve close to 4 million tonnage.
In the next 5 years, petrochemical valves are undoubtedly the main force of requirements, especially ultra-high pressure and high temperature valves, ultra-low temperature valves and temperature valves, corrosion resistant stainless steel valves, transportation of viscous substances or stainless steel ball valves with suspended particulate matter production process will develop rapidly, demand will increase significantly.
Automation technology is the future trend
The development direction of automation technology valve should be the domestic company is an opportunity to develop the trend, now the domestic valve field should see that the export value of automation technology valve is less than 5% of the total value, the import volume and the total value is very, which shows that the national demand for automation technology valve or a lot, the product from the technology, quality and there is a big difference, Not enough to meet the needs of the Chinese market. Therefore, valve enterprises should tightly grasp the development of automation technology valve space, enhance market share and product quality.
Under the circumstance of the rapid development of contemporary social economy, automation technology is undoubtedly the trend of social development. Therefore, valve enterprises must follow the general trend of social and economic development to gain a firm foothold in the competition.
Complete sets of equipment, standardization is the development trend
With the development of modern industrial production, the demand for valves and other products in the petrochemical industry also presents a trend of technical professionalism, standardization, import substitution, complete sets of equipment, and increasingly high requirements for environmental protection and energy saving. Valves will usher in new opportunities and turning points because of the integration of mechanical and electrical engineering valves. The market needs to gradually increase for mechanical and electrical engineering valves. The sales market is indeed a potential prospect for development, but at the same time, the quality of products and regulations are also higher. Valve field commodities have entered an innovative stage, not product types must be upgraded, and enterprise internal control management should also be carried out according to industry standards. Although the development of the valve market is relatively stable in the long term, there is still non-standard market competition in the industry. For example, some operators carry out the second market sales according to the renovation and re-painting of the abandoned valve, which brings serious safety risks to the construction quality and seriously disturbs the valve market supervision.
With the gradual improvement of the market development trend, the development trend of laws and regulations, the future valve field will be faced with a better competitive situation. And because of the industrial production of product quality regulations more systematic and the community will improve the concept of environmental protection and energy saving, the valve field will be the development trend of two routes, one is from a single category to a variety of products with multiple specifications and models, the second is to environmental protection and energy saving development. So in the future, the valve field will be toward two main which determines that a valve manufacturer will give all the situation will be more and more large.