Brief description of performance of multi-turn valve electric device (Type Z)
A device for controlling the flow, pressure, and direction of flow of a fluid (liquid, gas, gas-liquid, or solid-liquid mixture). Referred to as “valve. Usually consists of valve body, valve cover, seat, opening and closing parts, driving mechanism, seals and fasteners. The control function of the valve is to rely on the driving mechanism or fluid to drive the lifting, sliding, swinging or turning to change the size of the flow channel area to achieve. *** is used in industrial and agricultural production and daily living appliances.
Valves made in China
Before 2000 BC, Bamboo pipes and wooden plug valves were used in water pipelines in China. Later, water valves were used in irrigation channels, plate check valves were used in smelting bellows, and bamboo pipes and plate check valves were used in well salt mining to extract salt water. With the development of smelting technology and hydraulic machinery, copper and lead plug valves appeared in Europe. In 1681, the lever hammer safety valve appeared. Butterfly valves appeared in 1769. Then came the slide valve. Around 1840, there were globe valves with threaded stem and wedge gate valves with trapezoidal threaded stem. Subsequently, due to the development of electric power, petroleum, chemical industry and shipbuilding industry, the application of various new materials, all kinds of valves have been born and developed rapidly, valve manufacturing has gradually become an important part of the machinery industry.
Valves are widely available. According to the use function, it can be divided into: ① block valve. Used to cut off or put through the medium flow, including gate valve, globe valve, diaphragm valve, plug valve, ball valve, butterfly valve, etc. ② Control valve. For regulating the flow and pressure of the fluid, the valves made in China include regulating valves, throttle valves, pressure reducing valves and so on. ③ Check valve. Used to stop fluid from flowing backwards. (4) shunt valve. Used for dispensing, separating and mixing fluids, including slide valves, multiway valves, traps, etc. ⑤ Safety valve. Used for overpressure safety protection, prevent boiler, pressure vessel or pipeline damage, etc. In addition, according to the working pressure can be divided into vacuum valve, low pressure valve, medium pressure valve, high pressure valve, ultra high pressure valve; According to the working temperature can be divided into high temperature valve, medium temperature valve, normal temperature valve, low temperature valve; According to the driving mode, it can be divided into manual valve, electric valve, pneumatic valve, hydraulic valve, etc. According to the valve body material can be divided into cast iron valve, cast steel valve, forged steel valve, etc.; According to the characteristics of the use department, it can be divided into Marine valve, water heating valve, power station valve and so on.
The basic parameters of the valve are working pressure, working temperature and caliber. Various valves of industrial pipelines, commonly used nominal pressure pN (maximum working pressure allowed to bear under specified temperature) and nominal diameter DN (nominal diameter of valve body and pipe connection end) as the basic parameters. The valve is mainly sealed, strength, regulation, circulation, opening and closing performance, among which the first two are the most important basic performance of all valves. In order to ensure the sealing and strength of the valve, in addition to the relevant standards must comply with reasonable structural design, ensure the quality of the process, but also must be correctly selected materials.
Description of performance of multi-turn valve electric device (type Z)
Multi-turn valve electric device has full function, reliable performance, advanced control system, small size, light weight, easy to use and maintenance, etc. *** is used in electric power, metallurgy, petroleum, chemical industry, paper making, sewage treatment and other departments.
Multi – turn valve electric device, known as Z – type. It is suitable for multi-turn valve electric device with straight motion, known as type Z. Suitable for straight motion valve, such as gate valve, globe valve, diaphragm valve, water gate, etc. Used for valve opening, closing or adjustment, is the valve to achieve remote control, centralized control and automatic control of the essential driving device.
Multi – turn electric device, drive device, electric head, valve electric installation model
Multi-rotary valve electric device working environment:
3.2.1 Ambient temperature: -20+60℃ (special orders -60+80℃)
3.2.2 Relative temperature: 90%(at 25℃)
3.2.3 General type and outdoor type are used in places without inflammable/explosive and corrosive media; Explosion-proof products are D ⅰ and D ⅱ BT4, D ⅰ is suitable for non-mining working face of coal mine; D ⅱ BT4 used in factories, suitable for the environment of ⅱ A, ⅱ B T1-T4 group of sexual gas mixtures. (See GB3836.1 for details)
3.2.4 Protection grade: IP55 for outdoor and explosion-proof type (IP67 can be customized).
3.3.5 Working schedule: 10 minutes (30 minutes can be customized).
Multi-turn valve electric device (Type Z) drive device, electric head, valve electric device, valve actuator, valve driver, valve electric actuator performance
According to the use environment: Z is common type; ZW is outdoor type; ZB is flameproof; ZZ is integral type; ZT is the regulating type.
According to the output force: torque type and thrust type.
The performance of the product conforms to JB/T8528-1997 “General type valve electric device technical requirements”. The performance of explosion-proof type conforms to the provisions of GB3836.1-83 “General requirements for explosion-proof electrical equipment for sexual environment”, GB3836.2-83 “Explosion-proof electrical equipment for sexual Environment flameproof Electrical Equipment D” and JB/T8529-1997 “Technical conditions for flameproof valve electric Device”.
Post time: Jul-16-2022
