Actuator handout
1. The origin of actuator
Actuator, also known as actuator, is a commonly used mechatronics device in the field of automatic control (Device) is the execution device among the three major components of automation instrumentation (detection equipment, adjustment equipment and execution equipment). It mainly performs automatic operations on some equipment and devices, controls their switches and adjustments, and replaces manual work. According to the power type, it can be divided into pneumatic, hydraulic, electric, electro-hydraulic and other categories; according to the movement form, it can be divided into straight stroke, angular stroke, rotary type (multi-turn type) and other categories. Since using electricity as power has incomparable advantages over other types of media, the electric type has developed the fastest in recent years and has a wide range of applications. According to different standards, the electric type can be divided into: combined structure and electromechanical integration structure; electrical control type, electronic control type and intelligent control type (with HART, FF protocol); digital type and analog type; manual contact debugging type and infrared type Remote control debugging type, etc. It develops rapidly with people's requirements for control performance and the development of automatic control technology:
1. In the early industrial field, many controls were manual and semi-automatic. During operation, the human body directly came into contact with dangerous parts of industrial equipment and dangerous media (a variety of chemical substances and radioactive substances in three states of solid, liquid, and gas), which could easily cause accidents. It is very unsafe to cause harm to people;
2. The equipment has a short life, is easily damaged, and requires a lot of maintenance;
3. The control efficiency of semi-automatic, especially manual control, is very low, the error is large, and the production efficiency is low.
Based on the above reasons, actuators are gradually produced and used in industrial and other control fields, reducing and avoiding personal injuries and equipment damage, greatly improving control accuracy and efficiency, and also greatly improving improve production efficiency. With the rapid development of electronic component technology, computer technology and control theory this year, actuators at home and abroad have entered the era of intelligent control.
2. The English name of the actuating agency: ACTUATORS
3. Application fields of the actuating agency
The actuating agency is mainly used in the following three fields:
1. Power plant
Typical applications include:
①Thermal power industry application
Blower fan damper primary air inlet damper air preheating damper flue gas re- Circulation bypass damper damper Secondary air intake damper Main air box damper damper Burner regulating rod Burner swing drive Hydraulic push rod drive Impeller speed regulating flue gas regulating valve Steam regulating valve Ball valve and butterfly valve control Sliding door gate
②Valve actuator applications in other power industries
Ball valve dust removal control water spray impeller speed control control large hydraulic valve gas control valve burner ignition start steam control valve condensate water recirculation, deoxidation Machine, boiler water supply, superheat controller, reheating thermostat controller, and other related valve applications
2. Process control
It is used for production process control in chemical, petrochemical, mold, food, medicine, packaging and other industries. It controls valves, cutters, pipes, baffles, chutes, etc. according to established logical instructions or computer programs. The platform can accurately position, start and stop, open and close, and rotate, and use real-time parameters such as temperature, pressure, flow, size, radiation, brightness, color, roughness, and density detected by the system to adjust the system to achieve intermittent , control of continuous and cyclic processing processes.
3. Industrial automation
It is used in a wide range of aviation, aerospace, military industry, machinery, metallurgy, mining, transportation, building materials, etc. to conduct various forms of motion points (moving parts) of various types of automation equipment and systems. regulation and control.
The main applications in process control and industrial automation are as follows:
①Application in sulfur ore production
Water injection flow control ball valve and butterfly valve control
②Application of potassium carbonate pipeline valve actuator
Sliding door diverter, gate ball valve and butterfly valve ball control valve
③Application of water treatment valve actuator
Liquid flow flow control, pressure regulating valve, pressure control, acid solution flow control
④Application of valve actuator in limestone/cement plant
Ball or butterfly valve control to process dry cement , gypsum, or liquid air supply and induced draft fan adjustable damper damper bypass damper damper environmental pollution control and dust removal device sliding door to control the flow of raw materials in the hopper and storage warehouse gate control the flow of raw materials at the feed port gas control The valve regulates the air intake of the burner on the converter. The steam control valve controls the steam required for the production process
⑤Application of actuator in grain processing plant
Gate diverter valve distributor material unloader /Heater dust removal isolation baffle air flow control (logistics drying) ball valve and butterfly valve control
⑥Application of damper baffle and valve actuator in steel plant
Ball or butterfly valve control to control cooling water , waste water, or other cooling media Adjustable damper damper Air supply and induced draft fan bypass damper damper gate Environmental pollution control and dust removal device Sliding door controls the flow of raw materials at the feed inlet Logistics control of raw materials in hoppers and storage warehouses Gas control valve Steam control valve regulates the air intake volume of the burner on the converter to control the steam required for the production process
⑦Application of damper damper and valve actuator in aluminum plant
Air blower damper Plate primary air inlet damper damper air preheating damper damper flue gas recirculation bypass damper damper secondary air intake damper main air box damper damper burner regulating rod burner swing drive hydraulic push rod drive impeller speed regulation Flue gas regulating valve steam regulating valve ball valve and butterfly valve control sliding door gate
⑧Application of process control damper
Air supplementary exhaust fan bypass hot/cold air mixing emergency shutdown
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⑨Application in the petroleum industry
Oil injection process flow control Gas lift pipeline main valve pressure control Water injection process flow control Oil well oil quality sampling test/production valves
⑩Applications in the natural gas production and transportation industry
Gas lift gas flow flow control gas pipeline main valve pressure control compressor surge control natural gas pressure control natural gas pipeline main valve pressure control emergency shutdown natural gas pressure regulator Control pressure, control compressor surge control, flow control
IV. What well-known companies are there now in the world?
Foreign actuators appeared earlier and have always maintained a great advantage. Siemens produced the world's first electric actuator in 1905. Since the early 1990s, some foreign manufacturers of electric actuators have developed a new generation of products to occupy the market. The more well-known companies in the world mainly include the following:
1. ROTORK, UK
Since the early 1990s, some foreign manufacturers of electric actuators have developed new products to occupy the market. The earlier one was the British ROTORK, which launched the IQ intelligent electric actuator in 1995.
The IQ series intelligent electric actuator is an earlier generation of intelligent electric actuator launched by the British company ROTORK. Its actuator base type is the ROTORK multi-turn electric actuator. On this basis, a microprocessor is added. and peripheral chip circuits and software to achieve intelligent control. It uses an infrared handheld operator to set the actuator parameters, so it can adjust the wiping technology without "opening the cover". Its limit mechanism is set by generating digital signals from Hall sensors, and torque protection is obtained by testing the motor current and magnetic field. This is set by generating a digital signal from the Hall sensor, and the torque protection is obtained by measuring the motor current and magnetic field. This electronic sensor replaces the conventional counter transmission mechanism and cam switch assembly, which facilitates local working condition monitoring and safety assurance and simplifies debugging work.
2． JORDAN in the United States
The American JORDAN Control Company was founded in 1955. From the beginning to the present, it has been specializing in the production of electric actuators for power plant baffles, especially under harsh working conditions (such as: ambient temperature high, restricted installation location and difficult to maintain, frequent movements, etc.), Jordan's products have always been the first choice for most users in the world. This is due to the manufacturer's nearly fifty years of accumulated experience and advanced design and manufacturing ideas. In this field, especially in regulating applications with high adjustment frequency (the actuator can operate 2,000 to 4,000 times per hour), its market share in Europe and the United States has reached more than 70%. The only country that can compete with it is Germany. HARTMANN & BRAUN, but the latter is more than three times the price.
The main advantages of Jordan are high adjustment frequency (2000-4000 times/hour), integration (motor, servo amplifier and transmission mechanism), permanent lubrication and maintenance-free, installation at any position and angle, spur gear and Scottish yoke transmission mechanisms, etc. At present, all well-known domestic brands (such as ROTORK, SIPOS, AUMA, etc.) all adopt split design, especially the life of the reduction gearbox is very short. The turbine worm gear transmission mechanism causes large wear, high heat generation, low transmission efficiency, short lifespan, and the maximum adjustment frequency can only reach 1200 times/hour. Moreover, it requires regular lubrication and maintenance and cannot be installed in any position.
Main series: SM, LA, MV, VA, EH, TA-1200, MC-1100, SM/LA-3300
3. EMG in Germany
1883 The German AEG Group was established and began producing electric actuators around 1900. 1946 AEG Group, the second largest electronic equipment group in Europe at the time (its power plant construction department ranked first in Europe), established a wholly-owned subsidiary EMG to be responsible for the electric actuator business. 1976 EMG developed a patented eccentric planetary gear transmission mechanism and successfully applied it in on its actuator. 1984 The power plant construction department of the AEG Group was sold to Siemens and became the current power group KWU of Siemens. EMG began to establish an independent global sales network. 1992 AEG Group, with hundreds of thousands of employees worldwide, was acquired by Daimler-Benz Group and became Daimler Industrial Division and was spun off. 1996 EMG Industrial Group becomes independent. In 2003, EMG Group Company established a Chinese office in China and began to explore the Chinese market.
Main series: DREHMO (Standard, Matic I, Matic C)
4. ABB
ABB was established in 1988 by the merger of Swedish Assia Company and Swiss BBC Company, which were established in 1883 and 1891 respectively. It is headquartered in Zurich, Switzerland. ABB is a world-leading company in the field of power and automation technology. The ABB Group has thousands of companies in more than 100 countries around the world with 139,000 employees.
ABB’s relationship with China can be traced back to the beginning of this century: as early as 1907, ABB provided a set of steam boilers to the Chinese government. With the continuous development of business, the group established its China regional headquarters in Hong Kong in 1974.
At the end of 1994, the China regional headquarters was moved to Beijing. In 1995, ABB registered a wholly-owned holding company in Beijing: Asia Brown Buffari (China) Investment Co., Ltd., which is responsible for all investment activities in China. Currently, ABB China has offices in Shanghai, Guangzhou, Chongqing, Shenyang, Wuhan, Qingdao, Nanjing, Xi'an, Chengdu, Fuzhou, Harbin, Tianjin, Dalian, Jinan, Hangzhou, Kunming, Nanning, Shenzhen, Zhengzhou, Changchun, Changsha and Hong Kong. It has 23 sales agencies and 27 joint ventures/sole proprietorships in Beijing, Shanghai, Guangzhou, Chongqing, Xiamen, Hefei, Xinhui, Zhongshan, Hong Kong and other places, with more than 6,000 employees.
Main series: ONTRAC (MOE700, MME 800)
Ontrac series intelligent electric actuators are intelligent electric actuator products launched by ABB in recent years. The basic type of its actuator is also a multi-turn electric actuator. Its intelligent controller is installed in the actuator. It has an operation panel for direct operation, LCD display, and menu-based operation to set the actuator parameters. It uses Hall sensors to obtain position signals. The microprocessor calculates the torque from the motor slip S and compares it with the torque limit value set by the user. Once the motor is forced to stop moving beyond the limit, the microprocessor sends an alarm signal. This electronic torque protection method eliminates the need for traditional springs and mechanical switches and is very convenient for debugging. The actuator can also perform frequency conversion speed control and valve characteristic correction. In addition to the traditional control signal 4-20mA optional, PROFIBUS DP/V1 communication interface is also provided.
5. Germany's Hartmann-Brown (HARTMANamp; BRAUN)
Main series: PME 120
6. Germany's AUMA
7. Germany's Siemens (SIEMENS)
Siemens is the "boss" in the world's automation industry. SIPOS is the abbreviation of SIEMENS Positioner. It produced the world's first electric actuator in 1905 and has nearly a hundred years of experience in research, development, production and sales of electric actuators. SIPOS is the registered trademark of its electric actuator.
SIPOS has been widely used in various industrial production fields around the world. Almost all the actuators used on the bypass lines of electric turbines in Chinese power plants are imported SIPOS. Siemens also sold its SIPOS 1 series and SIPOS 3 series production technology to two manufacturing plants in China in 1987 and 1992 respectively. Siemens continues to update its technology and has successively eliminated SIPOS 1 and SIPOS 3. For the first time in the world, it has creatively applied advanced and mature motor frequency conversion control technology to electric actuators, using built-in integrated frequency converters to control the actuators. motor, and in 1997 launched the new generation SIPOS 5 series electric actuator for the new century to the market.
SIPOS 5 entered the Chinese market at the end of 1997. It is favored by the market because of its simple structure, advanced technology, reliable performance, self-diagnosis of faults, high degree of intelligence and affordable price. In just three years, more than 70 users in China have purchased more than 3,000 units. Its quality, performance and high price-performance ratio have been unanimously appreciated and recognized by all users.
In order to meet the needs of the market, since October 1, 1999, the electric actuator department of Siemens has been independent from the huge organization of Siemens, using the original registered trademark SIPOS as the company name. Became a professional electric actuator company with independent legal person status in Germany: SIPOS Aktorik Gmbh (Sibosi Electric Actuator Co., Ltd.). The company's headquarters and production plant are located in Nuremberg, Germany, and it has sales and service agencies in major countries and regions around the world.
Since October 1, 1999, all Siemens' electric actuator-related business has been transferred to Siemens AG, and Siemens will no longer produce electric actuators. After independence, SIPOS still uses SIPOS as the registered trademark of its electric actuator products, but it no longer belongs to Siemens. Siemens is now one of Siemens' main users, and Siemens continues to provide products and services to Siemens.
Main series: SIPOS1, SIPOS3, SIPOS 5 Flash
8. Bernard of France
France Bernard Co., Ltd. is the French-Chinese Electric Power Association One of the members, founded in 1946, is a world-renowned professional manufacturer of valve electric actuators (SERVOMOTEUR). The nuclear-grade valve electric actuators it produces meet international standards. Since 1950, French nuclear power plants have used the company's products. Bernard's electric actuators are used in more than 60 nuclear power plants around the world. In 1996, the company's products began to enter the Chinese market and have provided equipment for China's Daya Bay, Ling'ao, Qinshan, Tianwan and other nuclear power plants. Currently, the company produces more than 35,000 sets of control equipment annually, 70% of which are sold abroad and widely used in nuclear power, oil, natural gas, water treatment and other fields.
Main series: SERVOMOTEUR
9. Italian BIFFI
10. BELLOFRAM in the United States
11. Germany PS
12. Japan's Unic
5. History of JORDAN Company
It was founded by Mr. Chuck Jordan in 1955. In 1960, the damper actuator was introduced to power users. In 1964, the solid-state circuit controller was launched. In 1968, linear stroke electric actuators were launched. In 1970, angle stroke and linear stroke valve electric actuators were launched. In 1978, they were equipped with American complete suppliers and entered the Chinese market. From 1979 to 1990, they became the actuator branch of Foxboro Company. In 1987, springs were developed for the first time. Reset electric actuator, became an independent company in 1990, developed and produced an electric actuator using a stepper motor in 1991, the design won the government design award in 1992, launched an intelligent digital servo controller in 1995, passed ISO-9001 certification in 1996, and was established in 1997 Company website (www.jordancontrols.com), HART & Fieldbus interface launched in 1998, fast and high thrust hydraulic electric actuator launched in 1999, SM-6000 series electric actuator with continuous adjustment capability launched in 2000, 2001 – became an independent operating ROTORK company. There are service and spare parts centers in Beijing, Shanghai and Luoyang.
VI. Brief description of JORDAN’s entry into China
Since Shandong Shiheng Power Plant entered the Chinese market in 1978, there are now dozens of domestic power users, and since No issues ever occurred. From the perspective of the Chinese market, at present, the baffles and regulating valve electric heads (water supply, condensate water, etc.) Circulation, etc.) and fuel system quick-opening valves are widely used.
7. What are the main types of JORDAN actuators in China?
In China, JORDAN mainly includes angular stroke (SM); linear stroke (LA); short linear stroke (MV) , VA) performance.
8. The main current situation of actuators in China
my country's actuators and servo amplifiers were designed uniformly in the 1960s, and there has not been much technological innovation in the past thirty years. The earliest models are DTZ and DTJ.
However, in recent years (basically during the "Ninth Five-Year Plan" period), with the continuous improvement of domestic control requirements, various relevant research institutions and departments have also developed a new generation of intelligent electric actuators, whose performance has been greatly improved. The price is less than half of imported products.
The main development institutions include: Shanghai Automation Instrument Co., Ltd., Sichuan Instrument Group Company, Haiwanxun Instrument Co., Ltd., Shanghai Ruikai Instrument Co., Ltd., etc.
The main models include: QSL, QSQ, DKZ-Z, ZKJ-Z, ZILJ, IKJ, etc.
At present, in China, there are many brands of executive agencies (including domestic brands and foreign brands), and the market competition is fierce. Foreign products are mainly concentrated in the mid-to-high-end market, while domestic products are concentrated in the low-end market. The quality of foreign products is better, but the price is often several times or even ten times higher than that of domestic brands. Their investment and efforts in technology and business are significantly higher than that of domestic enterprises; some domestic products are now able to achieve high cost performance. But generally speaking, it is necessary to speed up technological progress and industry incentives, and increase business efforts.
Domestic actuators are widely used in various industries. However, from an industry perspective, import enforcement agencies are mainly concentrated in military industry, electric power, petrochemicals, chemicals, metallurgy, building materials, environmental protection and other fields and in production lines with a high degree of automation. From the perspective of investment, the places where import enforcement agencies are mostly used are mainly large and medium-sized enterprises invested by the state and pillar industries, foreign-invested enterprises, and private enterprises with sufficient funds and strong financing capabilities.
China's economy is taking off. As the world's largest manufacturing base, the market potential of executive agencies is still very large: major national initiatives such as the development of the western region, the development of the central region, and the revitalization of the old industrial base in the Northeast. ; The continuous increase in foreign capital investment; the technological updating and transformation of old enterprises have brought great opportunities.
Nowadays, China's corporate users have got rid of their long-term blindness and become rational. They neither blindly worship foreign countries nor blindly pursue low prices. Domestic companies are catching up with and surpassing international advanced technologies and striving to increase their popularity; while foreign manufacturers are targeting China's huge market and making continuous efforts to reduce prices to improve their competitiveness in the Chinese market